Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Effect of Mechanical Stirring on Semi-Continuous Casting of an Al-5.5%Zn-2.5%Mg-1.5%Cu Alloy (2000)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 331-337 (May 2000), p. 241-246 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/04/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.331-337.241.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Dystrophic axons in the nucleus gracilis of the normal rat containing cholecystokinin-like immunoreactivity (1985)
    Springer
    Acta neuropathologica 65 (1985), S. 224-234 
    Details
    ISSN: 1432-0533
    Keywords: Dystrophic axons ; Nucleus gracilis ; Cholecystokinin ; EM study ; Normal rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cholecystokinin immunoreactive (CCKI) axons in the nucleus gracilis of the normal rat were studied by light and electron microscopy using the peroxidase-antiperoxidase (PAP) immunocytochemical method. Immunoreactivity was found in both normal and dystrophic axons at various ages. Slightly enlarged CCKI varicosities were first observed in 2-month-old rats, gradually increased in number (max. at 21 months) and in diameter (up to 20 μm at 21 months), and then decreased (at 27 and 36 months). Dilatated CCKI fibers continuous with dystrophic varicosities also tended to increase proportionally in diameter. The dystrophic CCKI axonal profiles, first identified at the light-microscopic level and then observed under electron microscopy, had consistently characteristic features. In addition, numerous dystrophic nonreactive axonal profiles had morphological features differing from those of dystrophic reactive ones at advanced ages. These findings suggest that CCK may be partly involved in the formation of dystrophic axons in the nucleus gracilis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00687002
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Analgesic dipeptide, L-Tyr-D-Arg (D-kyotorphin) induces Met-enkephalin release from guinea-pig striatal slices (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 1344-1345 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Kyotorphin (L-Tyr-L-Arg), an analgesic dipeptide isolated from the bovine brain, and its analogue, L-Tyr-D-Arg (D-kyotorphin), have a naloxone-reversible analgesic effect. Both peptides (10−5 M) induced an approximately 4-fold increase of the basal release of Met-enkephalin from striatal slices. Therefore they may produce their analgesic effects through release of Met-enkephalin. The stronger in vivo effect of D-kyotorphin may be explained by its resistance to degradation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954941
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Mechanism of l-methionine overproduction by Escherichia coli: the replacement of Ser-54 by Asn in the MetJ protein causes the derepression of l-methionine biosynthetic enzymes (1999)
    Springer
    Applied microbiology and biotechnology 52 (1999), S. 179-185 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract We derived l-methionine-analogue-resistant mutants from Escherichia coli JM109 strain by mutagenesis with N-methyl-N′-nitro-N-nitrosoguanidine and selected the potent l-methionine-overproducing strains by microbioassay using lactic acid bacteria. One of the mutants, strain TN1, produced approximately 910 mg l-methionine/l following the addition of 0.1% yeast extract to fundamental medium containing glucose and ammonium sulfate. The l-methionine biosynthetic enzymes, cystathionine γ-synthase and cystathionine β-lyase, of the l-methionine-overproducing mutants were little repressed by l-methionine. To analyse the mechanism of l-methionine overproduction in the mutant strains, the metJ gene coding for the E. colimet repressor, MetJ protein, was cloned and sequenced by the polymerase chain reaction. The same single-amino-acid subsitution (wild-type Ser → Asn) at position 54 was observed in four independent l-methionine-producing mutants. When the wild-type metJ gene was then introduced into strain TN1 having the mutant metJ gene, the level of enzyme synthesis and the l-methionine productivity in the transformants were found to revert to those of the wild-type. It was therefore considered that only one point mutation in the metJ gene occurred in the l-methionine-producing mutants. These results demonstrate the important role of residue 54 of the MetJ protein in l-methionine overproduction, probably because of the derepression of l-methionine biosynthetic enzymes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530051506
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Experimental immunohistochemical studies on the distribution and origins of substance P in the medial preoptic area of the rat (1983)
    Springer
    Experimental brain research 53 (1983), S. 183-192 
    Details
    ISSN: 1432-1106
    Keywords: Substance P (SP) ; POM ; vlAH ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Distribution of substance P (SP)-positive fibers in the medial preoptic area (POM) of the rat and their origins were examined using indirect immunofluorescence. A very high density of SP-positive fibers was seen in the POM throughout its entire rostro-caudal extent. However, the distribution of these fibers was not even; the highest density was detected in the medial part of the POM, with less dense but still numerous fibers in the lateral part. On the other hand, in this area a small number of SP-positive cells could be found; a few cells were scattered in the rostral part and, in the caudal part, several cells could be seen in the ventral part of the POM. The origins of SP-positive fibers in the POM were experimentally examined. Since the destruction of the ventro-lateral part of the anterior hypothalamus (vlAH), where numerous SP-positive cells were seen, resulted in a marked decrease of SP-positive fibers in the POM on the operated side, the majority of these fibers may originate from SP-positive cells in the vlAH. The fine structure of SP-positive terminals in the POM were investigated by electron-microscopic immunohistochemical techniques. Immunoreactive terminals contained a few large granular vesicles together with numerous small vesicles, and they made synaptic contacts mainly with dendrites which were devoid of immunoreactive materials. Two different synaptic contacts could be distinguished: one asymmetrical (Gray's type I) and the other symmetrical (Gray's type II), with the latter being predominant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239411
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Morpholological analyses of galaninergic inputs to the rat spinal parasympathetic nucleus (1996)
    Springer
    Experimental brain research 109 (1996), S. 399-406 
    Details
    ISSN: 1432-1106
    Keywords: Galanin ; Parasympathetic preganglionic neurons ; Intermediolateral nucleus ; Fluoro-Gold tracer ; Confocal laser microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We examined the characteristic features of galanin (GAL)-containing nerve afferents in the intermediolateral nucleus (IML) of the rat lumbosacral spinal cord (L6, S1), i.e., spinal parasympathetic nucleus, by immunocytochemistry at both light and electron microscopic levels. Firstly, the types of synapses formed by GAL-immunoreactive (IR) axon terminals and their post- or presynaptic elements were examined in random ultrathin sections. A total of 109 synapses were examined. Axo-dendritic (71%) and axo-somatic (20%) synapses were always of the asymmetrical type. Axo-axonic synapses (9%) were occasionally found; GAL-IR axon terminals were either postsynaptic (3%) or presynaptic (6%) to non-IR axon terminals. By confocal laser microscopy, many GAL-IR axon terminals were seen close to cell bodies and proximal dendrites of the IML neurons that were retrogradely labeled with Fluoro-Gold injected into the pelvic ganglion. Some GAL-IR axon terminals were identified to be presynaptic to them under the electron microscope, by restaining for GAL immunoreactivity with the immunoperoxidase method. These findings suggest that the GAL afferents are involved in the parasympathetic motor regulation of pelvic organs via their central synaptic influences upon preganglionic neurons. Finally, hemi-transection of the upper lumbar segments (L1-L3) or unilateral dorsal rhizotomy (L5-S2) did not significantly alter the immunoreactivity for GAL in the IML. These results suggest that GAL afferents do not originate from regions rostral to the IML nor from the dorsal root ganglion, but probably from GAL cells located at least within the lower lumbar segments and/or sacral spinal cord.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00229624
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Ascending and descending components of the medial forebrain bundle in the rat as demonstrated by the horseradish peroxidase-blue reaction (1980)
    Springer
    Experimental brain research 39 (1980), S. 377-388 
    Details
    ISSN: 1432-1106
    Keywords: Medial forebrain bundle ; Ascending components ; Descending components ; HRP ; Sensitive substrate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The ascending and descending components of the medial forebrain bundle (MFB) were investigated by means of horseradish peroxidase (HRP) with a sensitive substrate. The HRP was injected iontophoretically into the MFB at various levels from the anterior commissure to the posterior hypothalamus. In order to prevent the diffusion of HRP to other brain areas, a double micropipette system was used. The descending components of the MFB are derived from (1) the anterior cingulate area, infra- or prelimbic area, and sulcal cortex, (2) the lateral septal nucleus and diagonal band, (3) the bed nucleus of the stria terminalis, (4) the paraventricular nucleus (5) the substantia innominata, (6) the amygdaloid complex (AM), (7) the ventromedial (VM) and dorsomedial (DM) hypothalamic nuclei, (8) the entopeduncular nucleus and (9) nucleus periventricularis stellatocellularis. The ascending components of the MFB originate in: (1) the medial preoptic nucleus, (2) the nucleus periventricularis stellatocellularis and rotundocellularis, (3) the posterior hypothalamic nucleus, (4) the parafascicular nucleus, (5) the ventral premammillary nucleus, (6) the substantia grisea periventricularis, (7) the lateral habenular nucleus, (8) the VM and DM, (9) the paratenial nucleus, (10) the AM and (11) the arcuate nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239302
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Effect of hyperdynamic therapy on cerebral ischaemia caused by vasospasm associated with subarachnoid haemorrhage (1982)
    Springer
    Acta neurochirurgica 63 (1982), S. 291-296 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Ten patients who developed neurological deficits associated with angiographically proven cerebral vasospasm caused by ruptured aneurysm were treated with hyperdynamic therapy induced by administration of a large amount of human serum albumin. No vaso-active drugs were administered. Cardiopulmonary function and intracranial pressure were monitored during the treatment. Marked improvement of neurological function was observed in all cases. Nine patients recovered completely without any neurological residual following treatment. The degree of the improvement observed during treatment closely correlated with the decrease in total peripheral resistance. Infusion of albumin did not cause elevation of intracranial pressure. It was concluded that the hyperdynamic therapy induced by administration of albumin has a dramatic effect on the ischaemic cerebral insult caused by vasospasm. It is postulated that the main effect of this treatment is produced by cerebrovascular dilatation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01728884
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Si/Si Interface Bonded at Room Temperature by Ar Beam Surface Activation (1998)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 294-296 (Nov. 1998), p. 341-344 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/03/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.294-296.341.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Low-temperature specific heat study of SrCu2(BO3)2 with an exactly solvable ground state (2000)
    Springer
    Journal of experimental and theoretical physics 90 (2000), S. 129-132 
    Details
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The specific heat of a two-dimensional spin gap system SrCu2(BO3)2 realizing the Shastry-Suther-land model was measured between 1.3 and 25 K under various magnetic fields up to 12 T. The analysis based on an isolated dimer model in a low temperature region revealed that the value of the spin gap at zero field is Δ = 34.4 K. It turned out that Δ decreases in proportion to H due to the Zeeman splitting of the excited triplet levels. This simplest model, however, fails to reproduce the result in a high-temperature region, suggesting rather strong spin-spin correlation of the system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.559083
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...