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  • 1
    Electronic Resource
    Electronic Resource
    Effects of cerebellectomy on the cat's vertical vestibuloocular reflex (1979)
    Springer
    Pflügers Archiv 382 (1979), S. 51-55 
    Details
    ISSN: 1432-2013
    Keywords: Cerebellectomy ; Vestibuloocular reflex ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of cerebellectomy on the semi-circular canal evoked responses recorded from individual vertical and oblique eye muscles were studied in cats anesthetized with Ketamine. The phase lag relative angular acceleration of the electromyographic response was consistantly smaller over the frequency range tested (0.02–1.0 Hz) in cerebellectomized than in intact animals. This finding indicates that the time constant of the central, neural integrator was shifted towards smaller values by the lesion. This was also suggested when the vertical eye movements generated by rotation about the pitch axis were recorded in the fully alert animal. In addition, the EOG data show that the phase of the VOR in the low frequency range was not altered following cerebellectomy suggesting that the macular influences were still present. When the EMG responses of the superior oblique (SO) and superior rectus (SR) muscles were studied in their presumed main mode, i.e. roll-canal and pitch-canal, respectively, no difference was noted in hemicerebellectomized animals when compared to intact control animals. However, when SO and SR were studied in pitch-canal and roll-canal rotation, respectively, dramatic changes in the response pattern were noted in lesioned animals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00585903
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  • 2
    Electronic Resource
    Electronic Resource
    On the central generation of locomotion in the low spinal cat (1979)
    Springer
    Experimental brain research 34 (1979), S. 241-261 
    Details
    ISSN: 1432-1106
    Keywords: Locomotion ; Central generator ; Cat ; Deafferentation ; Spinal cord
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A central network of neurones in the spinal cord has been shown to produce a rhythmic motor output similar to locomotion after suppression of all afferent inflow. The experiments were performed mainly in acute spinal cats (th. 12), which had received DOPA i.v. and the monoamine oxidase inhibitor Nialamide. In some preparations all dorsal roots supplying the spinal cord were transected, in others phasic afferent activity was suppressed by curarization. The activity was recorded as neurograms from nerve filaments or as electromyograms. It is concluded that: 1. alternating activity between flexors and extensors of foot, ankle, knee, and hip of one limb can still occur 2. the duration of the flexor discharges vary less with the cycle duration than the extensor discharges 3. different flexor muscles may retain individual patterns 4. the activity at different joints can be dissociated 5. there is at least one network for each limb 6. the coordination between the two hindlimbs can be alternating as in walking or be more closely spaced as in galloping 7. alternating activity in the ankle remains even when only segments L6, L7 and S1 are intact.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235671
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  • 3
    Electronic Resource
    Electronic Resource
    SEM study of the choroid plexus of the lateral ventricle in the cat (1979)
    Springer
    Anatomy and embryology 155 (1979), S. 323-331 
    Details
    ISSN: 1432-0568
    Keywords: Telencephalon ; Choroid plexus ; Lateral ventricle ; Blood vessels ; Micro Corrosion cast ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Corrosion casts of the complete vascular network of the choroid plexus of the lateral ventricle in the cat brain were studied in SEM using the injection-replication method. The villi of this plexus are located only on its supero-anterior and infero-posterior parts, being most densely packed in the former region, close to the interventricular foramen. The capillaries of the villi display small nodular thickenings, which suggest the presence of small, sinusoidal dilatations. The main vessel supplying the plexus with blood is the anterior choroidal artery. The plexus is also characterized by a particularly rich venous network, which is drained by a prominent (main) choroid vein. The vascular organization of the choroid plexus of the lateral ventricle in cat is compared to that of the corresponding plexuses in other mammals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317645
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  • 4
    Electronic Resource
    Electronic Resource
    Primary vestibular afferent projections to the ipsilateral abducens nucleus in cats (1979)
    Springer
    Experimental brain research 37 (1979), S. 177-181 
    Details
    ISSN: 1432-1106
    Keywords: Cat ; Autoradiography ; Abducens nucleus ; Primary vestibular fibers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Primary vestibular projections to the ipsilateral abducens nucleus were found in cats by injecting anterograde tracer substances (radioactive proline and fucose) into Scarpa's ganglion. Labelling was observed in the rostral and middle portion of the abducens nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01474263
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  • 5
    Electronic Resource
    Electronic Resource
    Effets de la stimulation des mécanorécepteurs splanchniques sur l'activité des cellules cérébelleuses de Purkinje (1979)
    Springer
    Experimental brain research 37 (1979), S. 405-416 
    Details
    ISSN: 1432-1106
    Keywords: Cerebellum ; Purkinje Cells ; Splanchnic mechanoreceptors ; Cat ; Cervelet ; Cellules Purkinje ; Mécanorécepteurs splanchniques ; Chat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les activités simple et complexe de cellules de Purkinje du cervelet du Chat (zone vermienne des lobules V et VI) ont été enregistrées au moyen de microélectrodes extracellulaires. Ces réponses étaient obtenues par stimulation de différents types de mécanorécepteurs du tractus gastro-intestinal: récepteurs musculaires connectés à des fibres C, récepteurs péritonéaux de mouvement connectés à des fibres Aγδ ou B, corpuscules de Pacini connectés à des fibres Aβ. Les caractéristiques des fibres splanchniques projetant sur cette aire cérébelleuse ont été définies. Des convergences splanchno-somatiques, splanchno-viscérales et splanchno-corticales ont été mises en évidence.
    Notes: Summary Climbing and mossy fibre activity in Purkinje cells of cat cerebellum (vermis part of lobules V and VI) were recorded by means of extracellular microelectrodes. Responses were obtained by stimulation of different types of mechanoreceptors in the gastro-intestinal tract: muscular receptors connected with C fibres, peritoneal movement receptors connected with Aγδ or B fibres, Pacinian corpuscules connected with Aβ fibres. The characteristics of the splanchnic fibre projections on this cerebellar area were defined. Splanchno-somatic, splanchno-visceral, and splanchno-cortical convergences were demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236814
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  • 6
    Electronic Resource
    Electronic Resource
    Identification of the projection from the visual cortex to the claustrum by anterograde axonal transport in the cat (1979)
    Springer
    Experimental brain research 34 (1979), S. 197-200 
    Details
    ISSN: 1432-1106
    Keywords: Claustrum ; Visual cortex ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Visual cortex, including areas 17, 18, and sometimes 19, was injected with tritiated leucine. Terminal labelling could be detected by autoradiography in the dorsocaudal part of the ipsilateral claustrum in all cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238353
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  • 7
    Electronic Resource
    Electronic Resource
    Discriminative stimulus properties of psychomotor stimulants in the cat (1979)
    Springer
    Psychopharmacology 63 (1979), S. 151-153 
    Details
    ISSN: 1432-2072
    Keywords: Discriminative stimulus properties ; Psychomotor stimulants ; Cat ; d-Amphetamine ; Clozapine ; Cocaine ; Morphine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cats were trained to choose between two levers of an operant chamber using interoceptive cues provided by d-amphetamine or saline as the discriminative stimuli. Following training, stimulus generalization was observed to additional doses of d-amphetamine and cocaine, but not to morphine. Clozapine blocked the generalization of the drug discrimination response to d-amphetamine, but had no effect on generalization to cocaine. These data indicate that discriminative stimulus properties of psychomotor stimulants, previously described in rats, are similar in cats.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00429694
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  • 8
    Electronic Resource
    Electronic Resource
    Lafora-like bodies in a cat (1979)
    Springer
    Acta neuropathologica 48 (1979), S. 55-58 
    Details
    ISSN: 1432-0533
    Keywords: Lafora-like bodies ; Morphogenesis ; Glycogen metabolism ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Lafora-like bodies in an 8-year-old cat were studied light and electron microscopically and histochemically. In addition to Lafora-like bodies composed of branching filaments, glycogen granules and electron-dense materials, abnormal accumulations of glycogen granules attracted attention. The most remarkable features were the developmental processes of the branching filaments originating directly from glycogen granules. Lafora-like bodies in the present study showed ultrastructural, histochemical, and enzymatic similarities to those described in the previous reports in Lafora's disease, glycogenosis and other cases. From these results, a certain disturbance of the glycogen metabolism is considered to be probably related to the productive mechanism of Lafora-like bodies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00691791
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  • 9
    Electronic Resource
    Electronic Resource
    Responses of single cells in cat's lateral geniculate nucleus and area 17 to the velocity of moving visual stimuli (1979)
    Springer
    Experimental brain research 34 (1979), S. 273-286 
    Details
    ISSN: 1432-1106
    Keywords: Stimulus velocity ; Single cell responses ; LGN ; Area 17 ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Neuronal responses to moving visual stimuli were recorded in the lateral geniculate nucleus (LGN) and area 17 of cats. Response duration (DE), number of spikes (NT), and mean frequency (FM) were estimated from the response histograms and analysed for their dependence on stimulus velocity. In the LGN, for about 2/3 of cells these response parameters changed monotonically with velocity up to about 100 °/s. In 1/3 of the cells, the response frequency was tuned to velocity. The speed at which individual cells reached a peak or plateau firing rate was correlated with their receptive field size. In area 17, most neurones were tuned to velocity. Nine out of 59 cells were insensitive to stimulus speed in that they responded equally well at stimulus velocities up to about 10 °/s. The results suggest that at higher levels in the nervous system information about velocity is represented in discrete groups of neurones. It is pointed out that different response parameters may be relevant for different perceptual phenomena associated with movement. The significance of integrational properties and lateral inhibition of nerve cells for the development of complex response properties is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235673
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  • 10
    Electronic Resource
    Electronic Resource
    Mise en evidence electrophysiologique des thermorécepteurs vagaux dans la région gastro-intestinale. Leur rôle dans la régulation de la motricité digestive (1979)
    Springer
    Experimental brain research 34 (1979), S. 419-434 
    Details
    ISSN: 1432-1106
    Keywords: Thermoreceptors ; Gastro-intestinal tract ; Vagal nerve ; C Fibres ; Cat ; Thermorecepteurs ; Tractus gastro ; Intestinal ; Nerf vague ; Fibres amyéliniques ; Chat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Chez des chats anesthésiés, des décharges sensitives vagales ont été enregistrées dans le ganglion plexiforme à l'aide d'électrodes extracellulaires en verre. Nous avons trouvé au niveau de l'antre et du duodénum, des récepteurs toniques, activés par des solutions chaudes (38–51 ° C avec un optimum à 46–49 ° C) ou froides (36–10 ° C avec un optimum à 12–10 ° C). Ces récepteurs ne répondent ni aux stimulus mécaniques (compression et distension des viscères), ni aux stimulus chimiques (perfusion avec des solutions glucosées ou acides). Ces récepteurs n'appartiennent donc pas au groupe des récepteurs polymodaux, mais ils doivent être considérés comme de véritables thermorécepteurs spécifiquement sensibles au chaud ou au froid. Les thermorécepteurs de la région gastro-duodénale sont connectés à des fibres vagales amyéliniques (vitesse de conduction: 0,8–1,4 m/s). Par ailleurs, le rôle éventuel des thermorécepteurs vagaux de la région gastro-duodénale dans la régulation de la motilité digestive a été recherché. En dérivant simultanément l'EMG en plusieurs points du tractus gastro-duodénal, il a été possible de démontrer que les stimulations froides et chaudes du duodénum, qui mettent en jeu les thermorécepteurs, provoquent une inhibition de l'activité électrique de l'antre. Les modifications persistent apèrs bisplanchnectomie, mais disparaissent complètement après bivagotomie. A partir de ces faits, nous en avons conclu que les thermorécepteurs vagaux sont impliqués dans la régulation nerveuse de la motilité gastro-duodénale.
    Notes: Summary In anaesthetized cats, sensory vagal units were recorded in the nodose ganglion by means of extracellular glass microelectrodes. In the antrum and the duodenum we have found receptors tonically activated by warm (38–51 ° C with an optimum at 46–49 ° C) or cold (36–10 ° C with an optimum at 12–10 ° C) solutions. These receptors did not respond to mechanical stimuli (compression and distension of the viscera) and to chemical ones (perfusion with glucose and acid solutions). Thus they did not belong to polymodal type, but they must be considered as true thermoreceptors, specifically sensitive to warm or cold stimulations. The gastro-duodenal thermoreceptors were connected to non-medullated vagal fibres (conduction velocity: 0.8–1.4 m/s). On the other hand, the role of the gastro-duodenal vagal thermoreceptors in the regulation of the digestive motility was studied. By using several electromyographic recordings, it was possible to show that the cold and warm stimulations of the duodenum which elicited thermoreceptor responses, induced an inhibition of the electrical activity of the antrum. The changes persisted after bisplanchnectomy, but disappeared completely after bivagotomy. From these facts it was concluded that the vagal thermoreceptors were involved in the nervous regulations of the gastro-duodenal motility.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239140
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  • 11
    Electronic Resource
    Electronic Resource
    Effects of ventrolateral thalamic nucleus cooling on initiation of forelimb ballistic flexion movements by conditioned cats (1979)
    Springer
    Experimental brain research 34 (1979), S. 435-452 
    Details
    ISSN: 1432-1106
    Keywords: Cooling ; Ventrolateral thalamic nucleus ; Pyramidal system ; Reaction time ; Ballistic movement ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Five cats were trained to perform a forelimb ballistic flexion on a reaction time paradigm including an upper limit of about 400 ms for reinforcement (food pellets). They were implanted with a cyrogenic probe thermically insulated, except at the tip, by a vacuum jacket (outer diameter, 1.1 mm). Four cats had the probe inserted into the ventrolateral thalamic nucleus (VL), contralateral to the moving limb. During cooling they showed increased reaction times, which remained constant throughout daily sessions performed during many weeks, independent of the foreperiod but varying from 25 to 100 ms according to the subject. The temperatures used to upset the reaction times varied from +10 ° C to −8 ° C, depending on the localisation of the probe and on the insulation of the silver tip used to prevent nervous tissue reaction, but for each subject the reaction times always increased when the temperature was lowered. The fifth cat, with a probe inserted between VL and the Centre Median, showed a decrease of reaction times on cooling to 0 ° C and an increase of the reaction times for a cooling at −10 ° C. For one of the four cats with a probe properly inserted into the VL, strain-gauges were stuck on the lever to measure the latency of the decrease of the pressure exerted by the subject when the subject initiated the forelimb flexion in response to the CS. Reaction times and latencies of pressure changes were closely correlated with the movement onset, and they were equally delayed during cooling. This result demonstrates that it is not by slowing down movement velocity that reaction times are upset during VL cooling but by delaying the movement onset.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239141
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  • 12
    Electronic Resource
    Electronic Resource
    Anatomical and electrophysiological identification of motoneurones supplying the cat retractor bulbi muscle (1979)
    Springer
    Experimental brain research 34 (1979), S. 541-550 
    Details
    ISSN: 1432-1106
    Keywords: Retractor bulbi motoneurones ; Accessory abducens nucleus ; 6th nerve ; Oculomotricity ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Motoneurones innervating the retractor bulbi muscle in the cat have been identified by retrograde labelling with horseradish peroxidase, by intracellular recording and by intracellular staining with horseradish peroxidase. Their somata are found in an accessory abducens nucleus, analogous to that described in some other species, which consists of a narrow column of cells situated in the lateral tegmental reticular field, above the superior olive and medial to the facial nerve. This column of cells extends over approximately 1.5 mm from P 5.5 to P 7. The retractor bulbi motoneurones number from 80 to 120 and have large, elongated somata which give rise to five or six major dendrites. Their axons cross the reticular formation in a dorso-medial direction to pass through the principal abducens nucleus before turning to leave the brain stem in the 6th nerve. Antidromic latencies ranged from 0.4 to 0.7 ms. Some retractor bulbi motoneurones could also be activated antidromically by stimulation of the lateral rectus muscle nerve.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239148
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  • 13
    Electronic Resource
    Electronic Resource
    Classification of cat retinal ganglion cells into X- and Y-cells with a contrast reversal stimulus (1979)
    Springer
    Experimental brain research 35 (1979), S. 25-36 
    Details
    ISSN: 1432-1106
    Keywords: Retinal ganglion cells ; Cat ; Contrast reversal stimulus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A contrast reversal (alternating phase) stimulus was used to study the responses of 150 retinal ganglion cells from 15 adult cats. Because the majority of the cells did not show perfect linear spatial summation, a ratio of the firing rates at two time periods was used to express the degree of nonlinearity. Y-cells showed a high degree of nonlinearity, and their mean null ratio was significantly lower than that of X-cells. With the stimulus at the null position, X-cells had an unmodulated discharge rate which was significantly higher than maintained activity, while the firing rate of Y-cells was lower than maintained activity. With the stimulus placed at an eccentric position in the receptive field, X-cells responded in a sustained manner, while Y-cells respond transiently. Because of these observations, we conclude that X-cells correspond to the sustained cells, while Y-cells correspond to the transient cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236782
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  • 14
    Electronic Resource
    Electronic Resource
    Various types of corticotectal neurons of cats as demonstrated by means of retrograde axonal transport of horseradish peroxidase (1979)
    Springer
    Experimental brain research 35 (1979), S. 161-175 
    Details
    ISSN: 1432-1106
    Keywords: Cerebral cortex ; Superior colliculus ; Cat ; Horseradish peroxidase method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The retrograde labeling of cortical neurons with horseradish peroxidase (HRP) was used to investigate the morphological features of neurons in various cortical areas projecting to the superior colliculus in the cat. Corticotectal cells were found to be labeled in layer V of the entire cerebral cortex. The number of labeled cells and their locations varied according to the sites of injections of HRP in the colliculus. Most of the Corticotectal cells identified in the present study were small (9–20 μm in diameter, 66%) and medium (20–40 urn, 30%) pyramidal neurons and only 4% of them were large (more than 40 μm). The labeled cells, 261 in total number, had somal diameters of 20.8±8.0 μm (mean and SD). The range of sizes of the labeled neurons was different in different cortical areas. For example, the labeled neurons in the Clare-Bishop area had a greater proportion of large diameter cells than in other areas. The present findings are largely in agreement with the previous data of anterograde degeneration methods with respect to the topographical correlation of the Corticotectal projections. However, in some cortical areas, e.g., the sensorimotor and the first visual (area 17) cortex of the lateral surface of the hemisphere, relatively small numbers of Corticotectal neurons appear to have been labeled by retrogradely transported HRP. The sparsity of the labeled neurons in certain cortical areas may reflect the existence of Corticotectal neurons with axon collaterals supplying brain structures other than the superior colliculus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236792
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  • 15
    Electronic Resource
    Electronic Resource
    Cortical neurons projecting to the pontine nuclei in the cat. An experimental study with the horseradish peroxidase technique (1979)
    Springer
    Experimental brain research 35 (1979), S. 269-285 
    Details
    ISSN: 1432-1106
    Keywords: Cerebral cortex ; Pontine nuclei ; Cat ; Horseradish peroxidase method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Horseradish peroxidase (HRP) injections in various portions of the cat pontine nuclei resulted in retrograde labeling of neurons in layer V of the ipsilateral cerebral cortex. Corticopontine neurons, pyramidal in type, have been found to be labeled in the entire cortex, confirming the previous findings of anterograde degeneration studies. Most (91%) of the labeled cells were 14–26 μm in diameter (mean 19.4±4.5 μm SD). Small (10–20 μm) and medium (20–40 μm) cells represent 51.5% and 47.7%, respectively, of the total number of the labeled neurons. The populations of the neurons of various sizes were almost identical in different cortical areas, and were different from the populations of corticoreticular and corticospinal cells. Corticopontine cells were well labeled in experimental cases of 3-days' survival time, confirming the topographical organization established previously by degeneration studies for this projection system. However, in cases of shorter survival time (20–27 h), the number of labeled neurons was very small. The relative paucity of labeled Corticopontine neurons in the sigmoid and lateral gyri is discussed with reference to other cortical descending neurons (e.g., the corticotectal, corticoreticular and corticospinal) which have hitherto been identified morphologically as well as physiologically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236615
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  • 16
    Electronic Resource
    Electronic Resource
    Cat phrenic nucleus architecture as revealed by horseradish peroxidase mapping (1979)
    Springer
    Experimental brain research 35 (1979), S. 395-406 
    Details
    ISSN: 1432-1106
    Keywords: Cat ; Spinal cord ; Phrenic motoneurons ; Neuron geometry ; Horseradish peroxidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cat phrenic motoneurons, labeled by intradiaphragmatic injection of horseradish peroxidase, formed a tight cluster in the most ventral portion of the ventral horn in lamina IX of the lower cervical cord. Cell counts were symmetrically distributed for 17 to 21 mm along the longitudinal axis of the cord with a unimodal peak at the junction of segments C5 and C6. The phrenic nucleus was bilaterally organized on either side of the cord with anatomical symmetry and in no case was there evidence for the crossing of phrenic axons in the cord. Assessment of cellular geometry and intercellular relationships demonstrated that phrenic cell diameters approximated a normal distribution with a single peak at 26 μm while longitudinal cell lengths averaged 76 μm. Cells of different size were mixed randomly at all levels of the nucleus. The minimum distance between cells was about 10 μm and the maximum cell packing density approached 2 cells per 106 μm3. The results confirm the location of the cat phrenic nucleus, extend the knowledge of phrenic motoneuronal geometry, and provide an anatomical basis for the understanding of recruitment and synchronization phenomena within the phrenic nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236759
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  • 17
    Electronic Resource
    Electronic Resource
    Visual suppression from nondominant eye in the lateral geniculate nucleus: A comparison of cat and monkey (1979)
    Springer
    Experimental brain research 35 (1979), S. 465-477 
    Details
    ISSN: 1432-1106
    Keywords: Cat ; Monkey ; Lateral geniculate nucleus ; Visual nondominant suppression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have studied the suppression of firing in single LGN cells of cat and monkey in response to visual stimulation of the nondominant eye. In the cat LGN most of the cells of each of the main laminae show this nondominat suppression. X cells having their dominant input from the ipsilateral eye were suppressed to a significantly greater degree than any other cell type in the cat LGN. In the monkey LGN nondominant suppression was absent in all 19 X-like cells studied, whereas 6 of 21 Y-like cells showed nondominant suppression. Thus nondominant suppression is present in the magnocellular laminae of the monkey LGN, where the Y-like cells are found, but appears to be absent from the parvocellular laminae, where the X-like cells are found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236765
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  • 18
    Electronic Resource
    Electronic Resource
    Thermosensory defects after cervical spinal cord lesions in the cat (1979)
    Springer
    Experimental brain research 35 (1979), S. 479-494 
    Details
    ISSN: 1432-1106
    Keywords: Thermosensitivity ; Lesions ; Spinal cord ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The behavioural thermosensitivity of cat paws was examined before and/or after restricted uni- and/or bilateral lesions had been made in the spinal cord between the first and fifth cervical segments. Unilateral lesions of the lateral funiculus, which involved at least its whole width at the level of the central canal, reproducibly were found to interfere with the contralateral sensitivity for temperature increases and/or decreases. No corresponding thermosensory deficiencies were found after unilateral lesions involving the ventral spinal quadrant or the dorsal funiculus. Various bilateral and combined lesions were made, but no cat ever developed thermoanaesthesia. The bilateral lesions included bilateral transections of: the middle parts of the lateral funiculi, the dorsal halves of the lateral funiculi, the dorsal funiculi, and the ventral spinal half. Most of our knowledge about peripheral behavioural thermosensitivity after spinal cord injury is based on observations of human patients, especially after anterolateral chordotomies. The present finding of contralateral thermosensory deficiencies after lesions of the middle part of the lateral funiculus fits with some of the clinical reports. The present failure to cause thermoanaesthesia, on the other hand, is inconsistent with the theory of a single ascending spinal pathway for behavioural thermo-sensitivity, which has emanated mainly from the clinical observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236766
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  • 19
    Electronic Resource
    Electronic Resource
    A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat (1979)
    Springer
    Experimental brain research 35 (1979), S. 495-510 
    Details
    ISSN: 1432-1106
    Keywords: Pretectal nuclei ; Superior colliculus ; Visual response pattern ; Retinal input types ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Single unit recordings from 220 units were obtained from the nuclei praetectalis anterior (NPA) and posterior (NPP) of 30 immobilized, anesthetized cats. Quantitative analysis of pretectal (PT) visual activity was mainly based on recordings from the NPP. For comparison, 160 collicular (CS) neurons were studied. A strong sensitivity for moving objects was evident in both samples. The following main types of PT activity were categorized: (A) slow movement, direction-selective units (21%); (B) slow movement, nondirection-selective units (19%); (C) units nonselective for stimulus velocity and direction (24%); (D) jerk movement selective, nondirection-selective units (36%). Latency measurements following single shocks to optic chiasm (OX) and tract (OT) showed mainly slow conducting fiber input to the PT and CS which can be divided into two different groups by conduction properties and synaptic delay: direct W-input and delayed W-input. Fast Y-fiber input of both types, direct and indirect, was recorded at both sites, PT and CS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236767
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    Electronic Resource
    Electronic Resource
    Hypercomplex cell types in area 18 of the cat (1979)
    Springer
    Experimental brain research 36 (1979), S. 191-194 
    Details
    ISSN: 1432-1106
    Keywords: Hypercomplex cells ; Area 18 ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Single unit recording has revealed the same orientation sensitive cell classes in cat area 18 as are to be found in area 17. These include particularly the various types of hypercomplex cell belonging to the S, C, and B cell families.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238477
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  • 21
    Electronic Resource
    Electronic Resource
    Activity of ventrolateral thalamic neurons in relation to a simple reaction time task in the cat (1979)
    Springer
    Experimental brain research 36 (1979), S. 285-300 
    Details
    ISSN: 1432-1106
    Keywords: VL nucleus ; Single units ; Reaction time ; Movement initiation ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Unrestrained cats performed ballistic forelimb flexion movements triggered by an auditory stimulus (CS) on a simple reaction time (RT) paradigm. During the variable foreperiod the subject was required to hold down a lever and to release it on presentation of the CS. The RTs ranged from 200 to 300 ms. The activity of single neurons of the ventrolateral nucleus of the thalamus (VL) was recorded bilaterally. More than 40% of the 166 units recorded in the VL contralateral to the performing limb presented, after the CS, changes of activity with a latency less than 100 ms and were classified into three types: (1) Twenty-five units had a short latency transient increase of activity 10 to 30 ms after the CS, followed by a longer increase or decrease in activity. Short latency increase as well as subsequent increase of the firing rate were not correlated to the RTs. (2) Twenty-nine units showed a 40–60 ms latency increase of activity which lasted long enough to continue during the forelimb movement. These units displayed a correlation between the RTs and the mean firing rate measured in the 40–100 ms period after the CS. The more the cells were activated, the shorter the RTs. (3) Fifteen units presented a reciprocal pattern of discharge with respect to the type (2) units. The firing rate decreased with latencies ranging from 20 to 90 ms after the CS. Only 14,5% of the 96 units recorded in the VL ipsilateral to the performing limb presented changes of activity starting in the 100 ms period following the CS. Background firing levels as well as phasic activity were rather low compared to those observed contralaterally. Sixteen units showed burst activity while the cat was performing but burst pattern was not time-related to the task. In an unconditioned animal, a very low level of activity and an absence of modulations were observed in both VLs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238912
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  • 22
    Electronic Resource
    Electronic Resource
    The role of maturation and visual experience in the development of eye alignment in cats (1979)
    Springer
    Experimental brain research 37 (1979), S. 41-47 
    Details
    ISSN: 1432-1106
    Keywords: Eye alignment ; Cat ; Visual experience ; Maturation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the developing kitten, the alignment of the pupils changes from strongly divergent to almost parallel. The visual axes, however, seem to stay almost parallel throughout this period. The influence of early visual experience on this development is examined in the present study. The results suggest that the development of eye alignment is not controlled by visual experience, but depends on maturational processes, and that normal visual input serves only to halt these processes at the appropriate time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01474252
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  • 23
    Electronic Resource
    Electronic Resource
    14C-Deoxyglucose mapping of orientation subunits in the cats visual cortical areas (1979)
    Springer
    Experimental brain research 37 (1979), S. 609-613 
    Details
    ISSN: 1432-1106
    Keywords: Orientation subunits ; Visual cortex ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The orientation domain in the cortical visual areas of anesthetized cats has been investigated by employing the 14C-Deoxyglucose technique (Sokoloff et al., 1977). Orientation subunits (OS) are seen in the first (V1), the second (V2) and the third visual area (V3) as well as in the visual areas of the suprasylvian sulcus. In the latter regions OS are less elaborated than in V1, V2, and V3. The OS are continuous through all cortical layers; in V1 however, only weak label is detected in layer 4C. In V1, V2, and V3 the width of the OS is about 0.4 mm and the average distance between two OS centers is 0.9 mm. The spatial pattern of the OS seems to be more regular in the visual field periphery than in regions representing the vertical meridian.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236828
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  • 24
    Electronic Resource
    Electronic Resource
    The effects of splanchnic nerve stimulation on the plasma levels of serotonin and substance P in the portal vein of the cat (1979)
    Springer
    Journal of neural transmission 46 (1979), S. 105-112 
    Details
    ISSN: 1435-1463
    Keywords: Cat ; electrical stimulation ; serotonin ; splanchnic nerves ; substance P
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The blood levels of serotonin (5-HT) and substance P (SP) in the portal vein were studied after splanchnic nerve stimulation in the cat. The portal levels of both substances were studied before, during and after splanchnic nerve stimulation. There was a twofold increase in 5-HT during stimulation whilst the SP concentration remained unchanged. These results suggest that the nervous control of the amine release into the portal stream and the mechanism that regulates the release of the polypeptide is not the same.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01250332
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  • 25
    Electronic Resource
    Electronic Resource
    Brain-stem responses of the cat and interaural attenuation (1979)
    Springer
    European archives of oto-rhino-laryngology and head & neck 222 (1979), S. 113-118 
    Details
    ISSN: 1434-4726
    Keywords: Brain-stem electric response (BSER) ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The early auditory evoked responses have been studied in bilaterally hearing cats, and in animals with hereditary unilateral anacusis. Cross-over stimulation of the hearing ear occurs at an interaural attenuation of 50-50 dB, and all six waves of the responsare present at supra-threshold stimulus levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00469750
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  • 26
    Electronic Resource
    Electronic Resource
    Types of thalamo-cortical relay neurons in the anteroventral nucleus of the cat (1979)
    Springer
    Cell & tissue research 196 (1979), S. 175-179 
    Details
    ISSN: 1432-0878
    Keywords: Thalamo-cortical projection ; Anteroventral nucleus ; HRP retrograde transport ; Golgi impregnation ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Neurons displaying a thalamo-cortical projection were marked by means of the retrograde transport of horseradish peroxidase (HRP), and the labeled elements were compared with neurons impregnated by the Golgi technique. Injections of HRP into the posterior area of the limbic cortex resulted in its uptake by various anterior thalamic nuclei, especially the anteroventral nucleus. HRP-positive cells are characterized by their position, dendritic orientation, and the shape and size of their somata. On the basis of the combined HRP- and Golgi-analysis three different types of thalamo-cortical relay neurons can be distinguished.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236358
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  • 27
    Electronic Resource
    Electronic Resource
    Herstellung und Prüfung festkörpergeschweißter Keramik-Metall-Verbindungen (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 276-284 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Preparation and Testing of Solid-State Bonded Ceramic-to-Metal-JointsCeramic-to-metal joints were manufactured by solid-state bonding in a R. F.-high-vacuum apparatus. The influence of welding temperature, welding time and welding pressure on the bond strength was investigated for an alumina/niobium-combination consisting of a layered composite ceramic-metal foil-ceramic. As a measure of bond quality the fracture resistance KICV was chosen. KICV date were obtained by the use of 4-point bend tests and tensile tests. For comparison, data are presented concerning the fracture resistance KIC of the bulk alumina and the conventional bond strength of the joints. In addition to the Nb/Al2O3-data, KICV factors are determined for other metal/alumina combinations and for a Zr/Si3N4 joint. The present solid-state bonding apparatus was used for the preparation of the specimens. A device for high-temperature bend testing in a high vacuum was constructed. Some data for the high-temperature bond strength of solid-state bonded joints are given.
    Notes: Keramik-Metall-Verbindungen wurden durch Festkörperschweißen in einer HF-HV-Apparatur hergestellt. Der Einfluß der Herstellungsparameter, Schweißtemperatur, Schweißzeit und Schweißdruck auf die Bindefestigkeit wurde für eine Al2O3/Nb-Materialkombination der Schichtanordnung Keramik-Metallfolie-Keramik untersucht. Als Maß für die Bindequalität wurde der Bruchwiderstand der Verbindung KICV gewählt. KICV wurde im Vierpunkt-Biegeversuch und im Zugversuch ermittelt. Zum Vergleich wurden Bruchwiderstandswerte KIC der Ausgangskeramik und konventionelle Haftfestigkeitskennwerte bestimmt. Außer für Nb/Al2O3-Kombinationen werden für andere, mit der vorhandenen Schweißvorrichtung hergestellten Metall/Al2O3-Kombinationen und für eine Zr/Si3N4-Paarung Bindefestigkeitsdaten angegeben. Eine Vorrichtung zur HV-Hochtemperaturbiegeprüfung wurde gebaut. Einige Daten zur Hochtemperatur-Bindefestigkeit festkörpergeschweißter Verbindungen werden mitgeteilt.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100808
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  • 28
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    Electronic Resource
    Zahnradgetriebe 1979. VDI-Bericht 332. Von Tagung der VDI-Gesellschaft Konstruktion und Entwicklung, München 1979. Verlag Chemie GmbH., Postfach 1260/1280, 6940 Weinheim. 1979, 288 288 Seiten, 425 Bilder, ISBN 3-18-090332-5, kart. 131,-DM (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 292-292 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100810
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  • 29
    Electronic Resource
    Electronic Resource
    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A72 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100902
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  • 30
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    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A74 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100903
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  • 31
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    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A76 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100905
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  • 32
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    Zum Ausscheidungs- und Korrosionsverhalten eines ferritisch-austenitischen Chrom-Nickel-Molybdän-Stahles nach kurzzeitiger Glühbehandlung unter besonderer Berücksichtigung des SchweißensAuszug aus der gleichnamigen Dissertation des erstgenannten Verfassers, Darmstadt, 1978, D 17. (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 317-332 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Structural changes and corrosion behaviour of a ferritic-austenitic chromium-nickel-molybdenum steel after short time heat treatments with special consideration of weldingSusceptibility of the ferritic-austenitic steel X 2 CrNiMoN 225 in the solution treated and quenched state to intergranular corrosion and to stress corrosion cracking and pitting corrosion in solutions with chloride ions. Comparison with two austenitic steels (X 5 CrNi 189 and X 3 CrNiMoN 17135). Investigations of the influence of structural changes due to short time isothermal heat treatments and to welding on the mentioned three corrosion types.
    Notes: Verhalten des ferritisch-austenitischen Stahles X 2 CrNiMoN 225 (Werkstoff-Nr. 1.4462) im lösungsgeglühten und abgeschreckten Zustand gegenüber interkristalliner Korrosion (IK) sowie Spannungsrißkorrosion (SpRK) und Lochkorrosion in chloridhaltigen wäßrigen Medien. Vergleich mit den beiden austenitischen Stählen X 5 CrNi 189 (Werkstoff-Nr. 1.4301) und X 3 CrNiMoN 17135 (Werkstoff-Nr. 1.4439). Untersuchungen zum Einfluß der Gefügeänderungen infolge kurzzeitiger isothermer Glühbehandlungen und Schweißungen auf das Verhalten gegenüber den genannten drei Korrosionsarten.
    Additional Material: 22 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100909
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  • 33
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    Korrosionsschutz - Beschichtungsschäden auf Stahl Von K.-A. van Oeteren, Bauverlag GmbH, Wiesbaden. 1979, 213 Seiten, zahlreiche Abbild., 15 × 21 cm, geb. 60,-DM (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 332-332 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100911
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  • 34
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    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A80 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101002
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  • 35
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    Some metallurgical observations upon the Preparation of Zircaloy 2/Stainless Steel Joints (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 349-353 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Einige metallurgische Beobachtungen zur Herstellung von diffusionsgeschweißten Übergängen zwischen Zircaloy 2 und EdelstahlEs wird ein Verfahren zur Verschweißung von Zircaloy 2 mit Edelstahl durch Ko-Extrusion vorgeschlagen. So hergestellte Schweißverbindungen wurden an der Nahtstelle zwischen Zircaloy 2 und Edelstahl metallographisch und im Rasterelektronenmikroskop untersucht. Außerdem wurden eine chemische Analyse sowie mit der Elektronen-Mikrosonde durchgeführt.Die Ergebnisse dieser Untersuchungen zeigt, daß mit diesem Verfahren eine perfekte Verbindung der beiden Materialien durch mechanische und metallurgische Vorgänge erzielt wird, die besser sein sollte als durch Diffusion bei hohen Temperaturen hergestellte Übergänge.
    Notes: A method of welding stainless steel to Zircaloy 2 by co-extrusion is proposed, and joints of these two metals have been made in this manner. Such a bond was examined at the interface between stainless steel and Zircaloy 2 using metallography, electron microprobe analysis, scanning electron microscopy and chemical analysis. It was found that this method of preparation the joints allow for sound connections characterized by the formation of a type of mechanical and metallurgical bond. These joints could be considered better than those obtained by diffusion at high temperatures.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101006
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  • 36
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    Werkstoffauswahl und Oberflächenbehandlung unter tribotechnischen Gesichtspunkten (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 456-466 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The material selection for tribologically stressed specimen and tools has to be done not only from the view point of economics but also of the consumption of scarce materials and energy.Empirical methods are used for this selection to get a reasonable compromise between surface and bulk functions to satisfy stability and rigidity.By applying system- and stress analysis for the estimation of surface and bulk properties some examples of metallurgical, manufacturing, operational and lubricating aspects to improve the tribological behaviour of components are shown.Using the friction energy for a wear prediction model the calculation of lifetime for dry lubricated roller bearings is possible.
    Notes: Eine funktionsgerechte Werkstoffauswahl für tribologisch beanspruchte Werkzeuge und Bauteile ist nicht nur eine Forderung der Wirtschaftlichkeit, sondern gewinnt auch vor dem Hintergrund der Rohstoff- und Energiesicherung eine zunehmende Bedeutung.Die Werkstoffauswahl tribologisch beanspruchter Werkzeuge und Bauteile wird nach wie vor überwiegend nach empirischen Methoden vorgenommen, wobei häufig Kompromißlösungen zwischen der Oberflächenfunktion und der Grundwerkstoff-Funktion zur Erfüllung der Festigkeits- und Steifigkeitsanforderungen eingegangen werden müssen.Ausgehend von einer methodischen Vorgehensweise einer System-und Beanspruchungsanalyse zur Abschätzung der Oberflächen- und Grundwerkstoffbeanspruchung wurden an verschiedenen Beispielen werkstoffkundliche, fertigungstechnische, konstruktive und schmiertechnische Gesichtspunkte zur Verbesserung des tribologischen Verhaltens von Bauteilpaarungen aufgezeigt.Durch Anwendung eines energetischen Verschleißmodells konnten Berechnungsmöglichkeiten zur Lebensdauerbestimmung feststoffgeschmierter Wälzlager angegeben werden.
    Additional Material: 18 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101210
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  • 37
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    Ergebnisse von Zeitstandversuchen mit glatten und gekerbten Proben aus den Stählen 20 CrMoV 13 5 und X20CrMoWV 121 (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 1-14 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Results of Creep Tests With Smooth and Notched Specimens of the Steels 20 CrMoV 13 5 and X20 CrMoWV 121Two hydrogen resistant steels, viz. 20 CrMoV 13 5 W.-Nr. 1.7779) and X20 CrMoWV 12 1 (W.-Nr. 1.4935) used for bolts and nuts as well as for pressurized components were tested with respect to their creep resistance. Using smooth and notched specimens creep data for 450°C 500°C and 550°C were established. Steel 20CrMoV 13 5 was investigated in two quenched and tempered states (225…250 HB, 285…310 HB. The tempering treatments of X20 CrMoWV 12 1 (W.-Nr. 1.4935) lead to hardness levels of 215…226 HB resp. 275… 310 HB.Creep tests at 450°C and 500°C resp. at 500°C and 550°C were undertaken with smooth and notched specimens of 20 CrMoV 13 5-resp. X20 CrMoWV 12 1 -steels. At each temperature two resp. three different hardness levels were investigated which were produced by changing the quenching and tempering procedure. The results prove the X20 CrMoWV 12 1-steel to show high ductility in all three Q + T conditions even after long creep tests. This holds true for the 20 CrMoV 13 5-steel in the soft condition and at a test temperature of 450°C only. The creep strength of both steels is about proportional to the ultimate strength of both steels is about proportional to the ultimate strength at room temperature. With regard to the allowable stresses it could be shown that in each case the creep strength for 100.000 hours divided by a safety factor of 1.5 is smaller than the 1% creep limit for the same time.
    Notes: Mit glatten und gekerbten Proben aus den Stählen 20 CrMoV135 und X20 CrMoWV 12 1 wurden Zeitstandversuche bei 450 und 500°C bzw. bei 500 und 550°C durchgeführt Beide Stähle lagen in verschieden harten Ausgangszuständen vor. Die Ergebnisse weisen für den X20 CrMoWV 12 1-Stahl auch nach langen Laufzeiten in allen drei Ausgangszuständen eine hohe Duktilität nach, während dies für den 20 CrMoV 13 5-Stahl nur im weichen Zustand und nur bei 450°C Prüftemperatur gilt. Die Zeitstandfestigkeit ist proportional der Zugfestigkeit des Ausgangszustandes bei Raumtemperatur. In jedem Fall ist der Wert 2/3 der Zeitstandfestigkeit für 100000 h kleiner als der Wert der 1%-Dehngrenze für 100000 h.
    Additional Material: 29 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100106
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  • 38
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    Modelluntersuchungen zur Faserverstärkung keramischer Werkstoffe (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 14-23 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Model Investigation of the Fibre Reinforcement of Ceramic MaterialsA mechanism for fibre reinforcement of high-modulus brittle materials, in particular ceramics, is investigated both experimentally and theoretically. A simple mathematical formalism representing crack extension in a brittle matrix reinforced by ductile fibres is derived, and characteristic property values, adapted to composite structures, are introduced.Alumina with unidirectional reinforcement by thin 80Ni20Cr wires is used as a model material.The mechanism presented allows to reduce the high sensivity of ceramic materials to cracks. It is necessary for the fibres to bridge matrix cracks under load. For this purpose, the fibres must not be bound too tightly to the matrix, and while a high ductility is certainly of value, it is not a necessity. The efficiency of the mechanism depends on -interface energy and friction at the matrix-fibre interface,-deformation and fracture behavior of the fibre material,-radius of the fibres,-volume fraction of the fibres,-critical stress intensity factor of the matrix,-size of the largest crack.Among these, the fibre radius appears to be the most suitable one for variation with the goal of optimizing material quality.
    Notes: Ein Faserverstärkungsmechanismus für spröde, insbesondere keramische Werkstoffe mit hohem Elastizitätsmodul wird theoretisch und experimentell untersucht.Ein einfache mathematischer Formalismus zur Beschreibung des Rißausbreitungsverhaltens in dementsprechend verstärkten Werkstoffen wird angegeben. Verbundwerkstoffspezifische Kenngrößen werden eingeführt.Als Modellwerkstoff für die experimentellen Untersuchungen dient Aluminiumoxid mit eingelagerten Feindrähten aus 80Ni20Cr.Der beschriebene Mechanismus ermöglicht es, die hohe Rißempfindlichkeit keramischer Werkstoffe herabzusetzen. Die Fasern müssen in der Lage sein, belastete Matrixrisse zu überbrücken. Hierzu dürfen sie nicht zu fest an die Matrix gebunden sein. Duktilität der Fasern ist günstig, aber nicht notwendig. Die Wirksamkeit des Mechanismus hängt ab von -der Grenzflächenergie und -reibung zwischen Fasern und Matrix,-dem Verformungs- und Bruchverhalten der Fasern,-dem Faserradius,-dem Volumenbruchteil der Fasern,-dem kritischen Spannungsintensitätsfaktor der Matrix,-den Abmessungen der größten Risse.Zur Werkstoffoptimierung läßt sich unter diesen Größen am leichtesten der Faseradius variieren.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100107
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    Electronic Resource
    Masthead (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979) 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100301
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  • 40
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    Nachrichten - Hinweise (pp. A24) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A24 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100302
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  • 41
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    Nachrichten - Hinweise (pp. A28) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A28 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100305
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  • 42
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    Veranstaltungskalender (pp. A27) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A27 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100304
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  • 43
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    Nachrichten - Hinweise (pp. A26) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A26 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100303
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  • 44
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    Schrumpfungen, Spannungen und Risse beim Schweißen. Von Dr. -Ing R. Malisius. 4. Aurflage, Deutscher Verlag für Schweißtechnik GmbH. 4 Düsseldorf, 161 Seiten, 113 Bilder, 11 Tabellen, DIN C 5 Ln.-Hln.-kart. 36,-DM (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 112-112 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100311
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  • 45
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    Nachrichten - Hinweise (pp. A29) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A29 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100313
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  • 46
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    Nachrichten - Hinweise (pp. A32) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A32 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100402
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  • 47
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    Veranstaltungskalender (pp. A35) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A35 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100404
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  • 48
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    An investigation of Stress corrosion cracking in MgAZ61 alloy in 3.5% NaCl + 2% K2CrO4 aqueous solution at room temperature (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 119-123 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Untersuchung der Spannungsrißkorrosionsanfälligkeit einer Legierung MgAlZn61 in wäßriger Lösung von 3,5% NaCl + 2% K2CrO4 bei Raumtemperatur.
    Notes: Effect of specimen orientation, heat treatment and applied potential on the stress corrosion susceptibility of magnesium AZ61 (Mg-6.3% Al-0.5% Zn-0.20% Mn) alloy in an aqueous 3.5% NaCl + 2% K2CrO4 solution at room temperature was investigated. Stress corrosion times to failure were measured at different values of initial stress intensities using single edge (pre) cracked sheet tensile specimens and a modified tensometer. It was observed that while the specimen orientation has a significant effect on the measured values of stress corrosion threshold stress intensity, KIscc, the effect of varying the quench rate during heat treatment was minimal. Polarization measurements both in stressed and unstressed conditions, failed to reveal any significant effect of the applied stress intensity on the anodic polarization behavior of the alloy. However, measurements made under four different potentiostatic conditions showed a considerable increase in stress corrosion times to failure of the alloy. The results, together with fractographic observations of fractured specimen are discussed in terms of the mechanisms of stress corrosion cracking, in magnesium alloys.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100407
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    Zeitstanduntersuchungen an Kupfer-Knetlegierungen für den Chemie-Apparatebau (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 185-190 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100605
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  • 50
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    Creep-Properties of Thermoplastics and Duroplastics with regard to mechanical, thermical and chemical (corrosive) influences (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 200-212 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 20 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100607
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    Einsatz des Explosivschweißens zur Herstellung von Edelmetallplattierungen (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 191-200 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Explosive Welding as a Technique for Cladding of Precious MetalsThe method of explosive welding and the importance of the cladding parameters are described. The “Explosive Weldability Window” is experimentally determined for the material combination AgCu 10/Fe. The behaviour of explosive claddings produced under different conditions during rolling is investigated.Best results are obtained with samples with a wavy interphase, produced under the following cladding parameters: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {10^ \circ \le \beta \le 18^ \circ} \\ {1400 \le {\rm v}_{\rm K} \le 2600{{\rm m} \mathord{\left/ {\vphantom {{\rm m} {\rm s}}} \right. \kern-\nulldelimiterspace} {\rm s}}} \\ \end{array} $$\end{document}It is shown, that in comparison with conventional methods explosive cladding has advantages both in processing and quality.
    Notes: Die Grundlagen des Explosivschweißens werden geschildert und die Bedeutung der Plattierparameter aufgezeigt. Das „Explosive Weldability Window“ wird für die Werkstoffpaarung AgCu 10/Fe experimentell entwickelt.Das Verhalten der bei unterschiedlichen Bedingungen hergestellten Explosivplattierungen beim Auswalzen wird untersucht. Die besten Ergebnisse werden für Verbindungen mit welliger Verbindungsfläche erzielt, die mit den Plattierparametern \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {10^ \circ \le \beta \le 18^ \circ} \\ {1400 \le {\rm v}_{\rm K} \le 2600{{\rm m} \mathord{\left/ {\vphantom {{\rm m} {\rm s}}} \right. \kern-\nulldelimiterspace} {\rm s}}} \\ \end{array} $$\end{document} hergestellt werden.Es wird gezeigt, daß gegenüber konventionellen Verfahren das explosive Plattieren verfahrenstechnische und qualitative Vorteile hat.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100606
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    Das Sinterformteil - Herstellung Eigenschaften - und sein Einsatz zur Einsparung von Rohstoffen und Energie in der verarbeitenden Industrie (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 213-220 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Sintered Structural Part - Manufacturing, Properties and its Application for Saving Raw Material and Energy in the Engineering Industry.
    Additional Material: 18 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100608
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  • 53
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    Prozeßrechner als Meßmittel beim Lichtbogenschweißen (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 220-220 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Process Computer as Measuring Instrument at Arc Welding
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100609
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  • 54
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    Masthead (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979) 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100701
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  • 55
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    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A53 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100610
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    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A56 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100702
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    Veranstaltungskalender (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A67 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100804
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    Silicon technology (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 262-275 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Silizium-TechnologieZuerst wird in Kap. 1 eine kurze historische Übersicht gegeben. Im Folgenden wird gezeigt, daß die „Silizium-Technologie“ vom Schwermaschinenbau bis zu mikroskopischen Arbeitsgängen reicht. In Kap. 2…5 wird dies an der Herstellung des Werkstoffs „Silizium“ demonstriert, in Kap. 6 an der Herstellung von diskreten Bauelementen und integrierten Schaltkreisen. In Kap. 7 werden einige Anwendungen in der Leistungs-Elektronik und in der Nachrichten- und Informations-Technik dargestellt. Abschließende Bemerkungen in Kapitel 8 weisen darauf hin, daß trotz aller Wichtigkeit für die Leistungs-Elektronik die wirklich umwälzenden Folgen der Silizium-Technologie auf ihrer Bedeutung für die Computer-Technik beruhen.
    Notes: At first a short historical survey is given in chapter 1. That “silicon technology” comprises a totality reaching from heavy machinery down to microscopic operations, is demonstrated in the chapters 2…5 (production of the material silicon) and 6 (production of devices and integrated circuits). In chapter 7 some applications of these devices in power electronics and in communications- and information-engineering will be described. Finally chapter 8 demonstrates, that in spite of all relevance to power electronics the really very far reaching consequences of silicon technology depend upon its importance to the computer-technics.
    Additional Material: 23 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100807
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    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A69 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100812
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    Strahlenschutz. Radioaktive Stoffe - Röntgengeräte - Beschleuniger. Handbuch des Strahlenschutzrechts und Erläuterungen. Von Dr. Hans Schmatz, Ministerialdirektor im Bayerischen Staatsministerium für Arbeit und Sozialordnung, und Matthias Nöthlichs, Ministerialrat im Bundesministerium für Arbeit und Sozialordnung. Erich Schmidt Verlag, Berlin · Bielefeld · München. 2., neubearbeitete Auflage. Ergänzbare Ausgabe, einschließlich 5. Lieferung, 1022 Seiten, DIN A 5, einschl. Spezial-Ordner DM 64,- (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 292-292 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100811
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    Veranstaltungskalender (pp. A91) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A91 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101104
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  • 62
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    Wasserstoffversprödung von Feinkornbaustählen in Abhängigkeit von der Legierungszusammensetzung, der Gefügeausbildung und der mechanischen Belastung (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 373-390 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The Influence of Chemical Composition, Structure, and Mechanical Strain on the Hydrogen Embrittlement of Fine-Grained Low-Alloy SteelsOn specimens from fine-grained low-alloy steels StE 51 and StE 36 strain induced hydrogen embrittlement has been studied under increasing, pulsating, and static load conditions in hydrogen sulphide at various strain rates, gas pressures, gas compositions, and surface qualities. Both steels displayed equal sensitivity compared to mild constructional steels, Hydrogen pick-up occurred only during plastic-deformation of the specimens and led mainly to a decrease of the reduction of area and to the formation of side cracks in the necking zone. This type of embrittlement is important for constructions subjected to pulsating load conditions causing plastic deformation in areas with constructional notches.As part of the research and development project “Corrosion and Corrosion Prevention” this investigation was supported by the Federal Ministry of Research and Technology.
    Notes: An den Feinkornbaustählen StE 51 und StE 36 wurden Versuche zur dehnungsinduzierten Wasserstoffversprödung bei zügiger, bei schwellender und bei ruhender Belastung in Wasserstoff und Schwefelwasserstoff unter Variation der Dehngeschwindigkeit, des Gasüberdruckes, der Gasreinheit und der Oberflächengüte durchgeführt. Beide Stähle verhielten sich nicht grundsätzlich empfindlicher als weichere Baustähle. Eine Wasserstoffaufnahme erfolgte nur im Fließbereich und äußerte sich vornehmlich durch eine Abnahme der Brucheinschnürung oder zumindest durch Nebenrisse im Einschnürbereich. Diese Art der Versprödung kann z.B. für Konstruktionen bedeutsam sein, wenn es unter wechselndem Innendruck an Kerbstellen zu Fließvorgängen kommt.
    Additional Material: 27 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101106
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    Masthead (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979) 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101201
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    Nachrichten - Hinweise (pp. A98) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A98 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101203
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    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A85 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101010
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    Nachrichten - Hinweise (pp. A88) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A88 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101102
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  • 67
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    Aussagen der instrumentierten Schwingprüfung zur Dauerfestigkeit unlegierter Stähle (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 367-372 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Evidence of the Instrumented Fatigue Test for Fatigue Strength of Structural SteelIn the instrumented fatigue test the measurement of the frequency of loading and the power absorption of the resonance endurancetesting machine with electromagnetic energization discovery the rate of damage of the specimen. The energy and the energy gradient per cycle are especially suitable for characterize the fatigue life of the specimen. Rapid methods for evaluation fatigue strength are developed constructive on the results of experiments of fatigue tests in one load stage. The rapid methods are tested with cylindrical specimen (St 52-3) and spot weldings (St 1203). The results of measurement indicate a certain possibility of evaluation fatigue strength.
    Notes: Im instrumentierten Einstufen-Dauerschwingversuch können aus Frequenz- und Leistungsmessungen an einer Vollresonanzprüfmaschine mit elektromagnetischer Erregung Aussagen über den Schädigungsverlauf in der Probe abgeleitet werden. Die Arbeit und der Arbeitsanstieg pro Schwingspiel ermöglichen eine quantitative Differenzierung der Proben im Hinblick auf ihre Gesamtlebensdauer. Aufbauend auf Ergebnissen von Einstufenversuchen wurden aussagekräftige Kurzverfahren zur Dauerfestigkeitsabschätzung entwickelt un an zylindrischen Proben aus St 52-3 und an Widerstandspunktschweißverbindungen erprobt. Die durchgeführten Untersuchungen deuten die Möglichkeit zur zuverlässigen Dauerfestigkeitsabschätzung aus Kurzversuchen an.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101009
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    Nachrichten - Hinweise (pp. A90) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A90 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101103
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  • 69
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    Formulierung des in Grundversuchen ermittelten zeitabhängigen Spannung-Dehnung-Verhaltens viskoelastischer Werkstoffe (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 417-421 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Description of the time dependent stress-strain-behaviour of viscoelastic materials investigated in basic testsAssuming the existence of a mechanical equation of state calculation procedures are investigated in order to formulate the mechanical behaviour of viscoelastic materials in general and independent on the loading form. A case in point would be the derivation of creep behaviour from constant strain rate tensile tests or vice versa. Based on the ordinary log-log-plot for experimental data found in creep tests (constant stress conditions) and/or tensile tests a mechanical equation of state is developed. The results of the application of this equation to describe the mechanical behaviour under constant strain rate, creep and relaxation conditions in basic tests are compared with time-dependent behaviour of polycarbonat.
    Notes: Unter der Voraussetzung der Existenz einer mechanischen Zustandsgleichung werden Rechenverfahren untersucht, mit denen das in Grundversuchen ermittelte mechanische Verhalten viskoelastischer Werkstoffe unabhängig von der Beanspruchungsart beschrieben werden kann. Als Beispiel kann die Bestimmung des Kriechverhaltens aus Zugversuchen mit konstanter Dehngeschwindigkeit genommen werden. Ausgehend von der üblichen doppellogarithmischen Darstellung der Ergebnisse aus Kriechversuchen mit jeweils konstanter Spannung und/oder Zugversuchen wird eine mechanische Zustandsgleichung aufgestellt. Die Ergebnisse der Anwendung dieser Gleichung zur Beschreibung des Werkstoffverhaltens unter konstanter Dehngeschwindigkeit, Kriech- und Relaxationsbedingungen in Grundversuchen sind mit dem zeitabhängigen Verhalten von Polycarbonat verglichen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101109
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    Nachrichten - Hinweise (pp. A93) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A93 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101111
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    Nachrichten - Hinweise (pp. A96) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A96 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101202
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    Veranstaltungskalender (pp. A99) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A99 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101204
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    Nachrichten - Hinweise (pp. A100) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A100 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101205
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    Ceramic Materials for Vehicular Gas Turbine ApplicationsReprint from ICAS Proceedings 1978; 11th Congress of the International Council of the Aeronautical Sciences (ICAS), 10-16 September 1978, Lisboa/Portugal, Pages 107-114. (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 442-448 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Keramische Werkstoffe für Fahrzeuggasturbinen
    Notes: The objectives of the German R+D Program 1974-1980 concerning the application of ceramic components in a vehicular gas turbine are - among others -: -service temperatures of 1350 °C to gain higher efficiency,-a low fuel consumption and more flexibility in type of fuels.The goals can be achieved by introducing new ceramic materials, advanced manufacturing techniques, and new design methods.Gas turbine engineers, mechanical engineers, and ceramic materials scientists from industry and research institutions cooperate very closely to meet these goals.
    Additional Material: 22 Ill.
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    URL: http://dx.doi.org/10.1002/mawe.19790101208
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    Nachrichten - Hinweise (pp. A101) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A101 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790101212
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    Masthead (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979) 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100101
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    Nachrichten - Hinweise (pp. A2) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A2 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100102
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    Nachrichten - Hinweise (pp. A4) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A4 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100103
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    Veranstaltungskalender (pp. A5) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A5 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100104
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    Nachrichten - Hinweise (pp. A6) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A6 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100105
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    Dimensionierung komplizierter Bauteile aus Stahl im Bereich der Zeit- und Dauerfestigkeit (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 24-29 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Dimensioning of Complicated Steel Machine Parts in the Whole Range of Load Cycle and EnduranceThere is given a concept for the early state of dimensioning machine parts, developed by multiple regression from an extensive collection of data. Starting with static strength, it is possible to evaluate fatigue strength of specimens, also notched or of real machine parts under each kind of stresses including preloads and  -  in a first rough approximation  -  also for mechanical- or heat-treated steel parts in the whole range of load cycle and endurance.
    Notes: Es wird ein Dimensionierungskonzept für die frühe Entwicklungsphase vorgestellt, das über multiple Regression aus einer umfangreichen Datensammlung entwickelt wurde. Ausgehend von statischen Festigkeitswerten erlaubt es die Ermittlung der Zug-Druck-Wechselfestigkeit glatter Proben, der Wechselfestigkeit gekerbter Proben und Bauteile unter allgemeinen Beanspruchungszuständen einschließlich Mittelspannungen sowie in einer ersten Näherung auch des Einflusses der Randschicht-Verfestigung im Bereich der Zeit- und Dauerfestigkeit.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100108
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    Nachrichten - Hinweise (pp. A12) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A12 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100202
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    Nachrichten - Hinweise (pp. A14) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A14 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100203
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    Veranstaltungskalender (pp. A15) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A15 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100204
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    Nachrichten - Hinweise (pp. A16) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A16 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100205
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    Reihe Kontakt + Studium der Technischen Akademie Eßlingen. Band 25, Verbundwerkstoffe - Grundlagen und Anwendung. Von Dr. J. Schlichting, Dr. G. Elßner, Dr. W. Günther Dr. K. M. Grünthaler, Dipl. -Chem. D. Kehr, Dr. -Ing. G. Niederstadt, Dr. P. R. Sahm, Dr. B. Stöckel. 1. Auflage, Verlag Chemie, Weinheim. 1978, 160 Seiten, zahlreiche Bilder und Diagramme. 39,50 DM (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 112-112 
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    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100312
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    Masthead (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979) 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100401
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    Nachrichten - Hinweise (pp. A34) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A34 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100403
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    Amplitudenwechselversuche an der α-Kupfer-Zinnlegierung CuSn6 (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 123-127 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Cyclic Work Hardening Behavior of the α-copper tin alloy CuSn6.Polycrystalline specimens of the copper-tin alloy CuSn6 have been subjected to strain-controlled single step and two step fatigue tests. In a single step test the cyclic deformation curve at the beginning reveals strong work-hardening which is decreasing in the course of the test. A saturation of the stress amplitude is not observed. In two step tests, the material shows strong cyclic work hardening immediately after the change from low to high amplitudes, After the high amplitude is being changed into a low one, pronounced softening occurs. After changes of the strain amplitudes both these typical reactions of the material are observed up to fatigue crack initiation.
    Notes: An Proben aus der α-Kupfer-Zinnlegierung CuSn6 wurden gesamtdehnungsgesteuerte Ein- und Zweistufenversuche durchgeführt. Zu Beginn der Beanspruchung weisen die Wechselverformungskurven bei Einstufenbelastung einen starken Verfestigungsanstieg auf, der mit wachsender Versuchsdauer kleiner wird. Eine Sättigung der Spannungsamplitude tritt dagegen nicht auf. Bei Zweistufenversuchen wird im Anschluß an einen Wechsel von kleiner zu großer Amplitude eine ausgeprägte Wechselverfestigung beobachtet. Nach einem Wechsel von großer zu kleiner Amplitude wird dagegen eine starke Wechselentfestigung gemessen. Bei wiederholten Amplitudenwechseln charakterisieren diese Ver- und Entfestigungsvorgänge das Werkstoffverhalten bis zum Probenanriß.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100408
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    Bruchmechanische Überlegungen über die Auswirkung von Heißrissen (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 127-132 
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    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Fracture Mechanical Considerations on the Effect of Hot Cracks.There exists a lot of literature (1, 2) concerning the mechanisms of the origin of hot cracks. Something essential about the effects of hot cracks on the mechanical behaviour of components hardly can be found. These hot cracks can be valuated only by a quantification of the cracks and by an estimation of their behaviour under operational loadings.It is shown how by means of fracture mechanic material laws and calculation methods the growth of hot cracks under operational conditions can be evaluated. By a simple example of a fatigued vessel the systematic procedure is demonstrated and the results of calculation are explained. This procedure can be applied on the most technical problems as the operational stresses generally are below the yield point. For the region of the yield point and above it neither experimental nor theoretical results are available at the moment.The possibility of simplified calculations of burst stress of vessels is mentioned, which is derived from experiments. Experimental data (11) confirm the chosen hypothesis in so far as the burst stress can be realistically or rather conservatively evaluated by this method.It is concluded: With regard to the fact of unavoidable hot cracks for some certain austenitic steels the authors are convinced that basing on the examples and using the well known data of an austenitic steel as well as modified fracture mechanical rules the up to now empirically assumed stability of hot cracks is practically existent against intolerable crack growth. The given examples make it quite significant that the tolerable defect can be rather big without any critical consequences.If the operational conditions are at or above the level of the tolerable stresses, then safety precautions exist in so far as by means of non destructive - for instance during inservice inspections - volumetric examinations can be carried out. This will enable the detection of a critical defect or of one which becomes critical. Whilst the classic hot crack ranges in a micro dimension and therefore remains undetectable for the non destructive testing methods available at present the increased defect is detectable. Furtheron it should be pointed out that this detectable defect will surely be below the critical size and therefore will not be dangerous.
    Notes: Es wird gezeigt, wie mit Hilfe bruchmechanischer Werkstoffgesetze und Berechnungsmethoden das Wachstum von Heißrissen unter betrieblichen Beanspruchungen berechnet werden kann. Anhand eines einfachen Beispiels wechselbelasteter Behälter, die mit konstanter Amplitude be- und entlastet werden, wird das systematische Vorgehen demonstriert und das Resultat der Berechnung erläutert.Unter Berücksichtigung der Tatsache unvermeidbarer Heißrisse bei bestimmten austenitischen Werkstoffen wird auf Grund der gewählten Beispiele, d. h. bezogen auf einen benannten Werkstoff und modifizierten bruchmechanischen Betrachtungen, dargelegt, daß die bislang mehr oder weniger empirisch angenommene Beständigkeit gegen unzulässiges Rißwachstum tatsächlich weitgehend gegeben ist. Die hier aufgezeigten Beispiele lassen deutlich erkennen, daß der zulässige Fehler ziemlich groß sein kann, ohne kritische Folgen zu bewirken.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100409
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  • 91
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    Electronic Resource
    Werkstoff  -  Konstruktion  -  Fertigung (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 142-148 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100411
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  • 92
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    Electronic Resource
    Nachrichten - Hinweise (pp. A37) (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A37 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100412
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  • 93
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    Electronic Resource
    Masthead (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979) 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100501
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  • 94
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    Electronic Resource
    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A42 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100503
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  • 95
    Electronic Resource
    Electronic Resource
    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A40 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100502
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  • 96
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    Electronic Resource
    Untersuchungen zur Anwendung der Bruchmechanik auf duktile Werkstoffe am Beispiel des Bruchverhaltens von weichmacherfreiem PolyvinylchloridAuszug aus der gleichnamigen Dissertation von Dipl.-Ing. P. H. Otto, Januar 1978, TU München. (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. 149-157 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Study on the Application of the Fracture Mechanics Concept to Ductile Materials-Fracture Behavior of Rigid PVCThe fracture behavior of ductile materials cannot be treated by the methods of linear elastic fracture mechanics concept. For these materials the application of extended theories, which consider the non-linear stress-strain-relationship, is necessary.The test results being reported here have been obtained from rigid blue colored PVC. CT-specimens of different sizes were tested in tension at different loading rates. Above a certain strain level, the material shows crazing. This makes it possible to determine the plastic zone size. The relatively low Young's modulus originates in great deformations of the specimen. The deformation can therefore be measured with great accuracy.During the tests, a great number of quantities were registered. From these quantities the stress intensity factor, crack opening displacement, I-Integral and so on were calculated. The applicability of the results, in order to describe the fracture behavior of ductile materials, is being discussed.
    Notes: Das Bruchverhalten von duktil brechenden Materialien läßt sich nicht mit den Methoden der linear-elastischen Bruchmechanik (LEBM) beschreiben. Für derartige Materialien sind Theorien der erweiterten LEBM und der Fließbruchmechanik (FBM) anzuwenden, die sich zum Teil auf geometrische Größen stützen, deren experimentelle Bestimmung im allgemeinen mit Problemen verbunden ist.Im Rahmen dieser Arbeit erfolgt eine Überprüfung der BM-Theorien im Hinblick auf ihre Verwendbarkeit auf duktile Werkstoffe, wobei sich die Phänomenologie des Versuchswerkstoffes als hilfreich erweist. Das hier verwendete, eingefärbte PVC-hart besitzt die Eigenschaft, auf örtliches Überschreiten eines Beanspruchungsniveaus infolge crazing mit Farbveränderungen in plastischen Bereichen zu reagieren. Ferner nehmen die geometrischen Größen der unterschiedlichen BM-Theorien unter äußerer Beanspruchung durch den gegenüber metallischen Werkstoffen niederen E-Modul relativ große Werte an. Diese geometrischen Größen (Rißöffnung, Form und Ausdehnung der plastischen Zone) wurden auf optischem Wege registriert und nach einer Auswertung zusammen mit weiteren Meßgrößen den verschiedenen bruchmechanischen Theorien zugrunde gelegt.Die aus diesen Theorien gewonnenen Kennwerte werden verglichen und in eine Abschätzung über ihre Verwendbarkeit einbezogen.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100506
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  • 97
    Electronic Resource
    Electronic Resource
    Veranstaltungskalender (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A51 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100603
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  • 98
    Electronic Resource
    Electronic Resource
    Zur ACHEMA 79 (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A52 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100604
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  • 99
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    Electronic Resource
    A combined horseradish peroxidase and Golgi study on the afferent connections of the ventrobasal complex of the thalamus in the cat (1979)
    Springer
    Cell & tissue research 199 (1979), S. 529-538 
    Details
    ISSN: 1432-0878
    Keywords: Thalamus ; Horseradish peroxidase ; Golgi-impregnation ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Afferent connections to the ventrobasal complex (VB) of the thalamus were studied by means of retrograde transport of horseradish peroxidase (HRP) and by the Golgi-method. After HRP-injection into the VB, peroxidase-positive cells were observed contralaterally in the dorsal column nuclei (DCN), in the trigeminal nuclei and in the lateral cervical nucleus (LCN), and ipsilaterally in the somatosensory I (SI) and II (SII) cortical areas. Labeled cells of different shape and size were compared with neurons impregnated by the Golgi-technique. On the basis of HRP-labeling it is concluded that cells projecting to the VB are different in size and shape even within one region and that they correspond to the relay or efferent neurons observed in the Golgimaterial.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236088
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  • 100
    Electronic Resource
    Electronic Resource
    Nachrichten - Hinweise (1979)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 10 (1979), S. A66 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19790100803
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