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  • Articles: DFG German National Licenses  (16)
  • 1985-1989  (14)
  • 1975-1979  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Soft magnetic properties of FeRuGaSi alloy films: SOFMAX (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 772-779 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: To advance new soft magnetic materials of an FeGaSi alloy into the commercial world, improvements on various properties were designed by introducing additive elements without sacrificing its high saturation magnetic induction. The detailed studies on the diversified properties, such as saturation magnetic induction, film internal stress, wear resistivity, and so on, were performed. High-frequency permeability of the laminated structure film was also investigated. As a result, the Ru-added FeRuGaSi alloy films, whose typical compositions are Fe72Ru4Ga7Si17 and Fe68Ru8Ga7Si17 (at. %), prove to be excellent soft magnetic materials especially appropriate for the magnetic recording/playback head core use.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341923
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic and other properties and sputtering behavior of Co-base amorphous alloy films (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 2983-2992 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic and other properties of Co-base amorphous alloy films prepared by sputtering are investigated. A detailed magnetic phase diagram with saturation magnetic flux density, crystallization temperature, and zero-magnetostrictive line on Co-Ta-Zr amorphous alloys were obtained, and the technical knowhow to make a film with well-reproducible characteristics by widely changing the sputtering conditions was related with these physical properties. Especially on alloy sputtering, a phenomenological model for elucidating a composition difference between film and target is presented. After these studies, the film characteristics of Bs=12 kG, Tx=450 °C, ||λs||〈10−8, Hc〈10 mOe, and permeabilities of μ(1 MHz)=7000, μ(100 MHz)=2000 for the single film of 2 μm in thickness and of μ(1 MHz)=4000, μ(100 MHz)=800 for the insulator-sandwiched multilayered film of 10 μm are obtained, and these well-balanced values enable us to apply the materials for high-frequency recording head.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337848
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    New crystalline soft magnetic alloy with high saturation magnetization (invited) (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 3514-3519 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Extensive study was made on Fe-base crystalline alloys in search for new soft magnetic materials with high saturation magnetization by means of sputtering technique. It revealed that newly found FeGaSi and FeAlGe alloy systems possessed excellent soft magnetic properties with remarkably higher saturation magnetization. These new alloy films, annealed in vacuum at 500 °C for 1 h, show the magnetic properties of Bs=13 and 15 kG, Hc=0.09 and 0.20 Oe, and μ1 MHz=2000 and 1800 for the FeGaSi and FeAlGe alloy films of 2 μm in thickness, respectively. These values are superior to those of FeAlSi (sendust) alloy which is a typical soft magnetic material with high saturation magnetization. Results of the Co-added systems of FeCoGaSi and FeCoAlGe alloys are also presented. Discussions are given on various systems of Fe base crystalline alloy films studied, which are classified into four types of groups with respect to magnetic softness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338712
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A reappraisal of the diagnosis in cervical disc disease: the posterior longitudinal ligament perforated or not (1986)
    Springer
    Neuroradiology 28 (1986), S. 215-220 
    Details
    ISSN: 1432-1920
    Keywords: Cervical disc disease ; Myelography ; Spinal cord compression ; X-ray computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Herniated nuclear material of the cervical disc often perforates the posterior longitudinal ligament. Of 22 patients who were operated on by an anterior approach, 10 were of this type (the subligamentous type of cervical disc protrusion), while in the remaining 12 patients and 15 discs the protruded disc caused no tear in the ligament (the epiligamentous type). Myelography and CT myelography of these patients were reviewed. On CT myelography a localized and sharply demarcated excavation of the metrizamide ring was commonly found in the subligamentous type. Myelographic lateral view in this group shows a moderate or large indentation of the metrizamide column, since the herniated nucleus pulposus sometimes migrates caudally or cephalically. A small myelographic deformity coupled with diffuse excavation of the metrizamide ring on a CT myelogram leads us to the diagnosis of the epiligamentous type of cervical disc protrusion. In such cases, excision of the ligament is unnecessary during exploration of the discs, except when there is marked depression in the posterior longitudinal ligament. Presurgical recognition of both anatomical processes must be stressed for anterior discectomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00548195
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    General theory of coincidence-site lattices, reduced 0-lattices and complete pattern-shift lattices in arbitrary crystals (1976)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 32 (1976), S. 59-65 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The definition of a lattice and its superlattice is given algebraically. A coincidence site lattice (CSL) is defined as an intersection lattice of any two crystal lattices, and a complete pattern-shift lattice (DSCL) as the set theoretically smallest lattice containing both crystal lattices as superlattices. In the case where the two lattices are related by a non-singular matrix (having non-zero determinant), the so-called 0-lattice may be generated from the two crystal lattices. Any translation of the 0-lattice by all the vectors of one of the crystal lattices forms a lattice, i.e. a reduced 0-lattice. As a result of the theory of groups and numbers, the reduced 0-lattice (abbreviated to ROL) is homomorphic to the DSCL. It is shown that the factor group of all cosets of lattice 1 in the DSCL (in the ROL) is isomorphic with the factor group of all cosets of the CSL in lattice 2 (in the 0-lattice). The volume of a unit cell is derived for all the lattices generated by the two crystal lattices. Secondly, the reciprocal of a lattice is introduced and the reciprocity between the CSL and the DSCL determined by the reciprocals of the two crystal lattices is shown as a special case of a theorem mentioned about modules over a ring. Finally a complete diagram of relationships between b-lattices and 0-lattices for direct lattices and reciprocal lattices is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739476000119
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  • 6
    Electronic Resource
    Electronic Resource
    Nemaline bodies in spinal progressive muscular atrophy (1987)
    Springer
    Acta neuropathologica 74 (1987), S. 84-88 
    Details
    ISSN: 1432-0533
    Keywords: Nemaline myopathy ; Spinal progressive muscular atrophy ; Motor neuron disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Numerous nemaline bodies were demonstrated in the pectoralis major muscle of an autopsy case of a 52-year-old woman, who died of respiratory failure after having suffered from spinal progressive muscular atrophy for 1 year. Rod-like structures ultrastructurally indistinguishable from classical nemaline bodies were abundant in both normal-appearing and atrophic myofibers of the pectoralis major muscle but not in the appendicular skeletal muscles. Morphometric analysis of spinal anterior horn cells clearly showed severe depopulation of somatic motor neurons in the lower cervical cord segments. The present case may provide further support for the neurogenic nature of nemaline body formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688343
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  • 7
    Electronic Resource
    Electronic Resource
    Ia-expressing microglial cells in experimental allergic encephalomyelitis in rats (1989)
    Springer
    Acta neuropathologica 77 (1989), S. 472-479 
    Details
    ISSN: 1432-0533
    Keywords: Major histocompatibility complex ; Ia antigens ; Microglia ; Experimental allergic encephalomyelitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Monoclonal antibodies (MRC OX-6 and OX-17) recognized three types of cells expressing Ia antigen during the course of acute experimental allergic encephalomyelitis (EAE) in rats. In earlier stages of the disease, in animals with or without paralysis, Ia antigens were mostly localized to subarachnoidal and perivascular lymphocytic and histiocytic cell infiltrates, possibly serving as antigen-presenting cells. On the other hand, in convalescent rats, Ia antigens were expressed in a large number of cells with dendritic processes heavily populating the spinal gray matter. The appearance of these Ia-expressing cells in the convalescent stage coincided with the development of degenerating axon terminals in the spinal gray matter. These Ia-expressing cells possessed morphological features characteristic of microglia and were positive for ML-1 lectin but did not express glial fibrillary acidic protein. Immune electron microscopy disclosed the presence of Ia reaction products in the Golgi apparatus, endoplasmic reticulum and plasma membrane of these cells with dendritic processes, indicating active synthesis of Ia molecules in microglia. In addition, Ia antigens were localized to the cells with ultrastructural features of macrophages. Thus, Ia-expressing cells in EAE seems to play dual roles: the induction of immunological reactions during earlier stages and the participation in reparative processes during convalescence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00687248
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  • 8
    Electronic Resource
    Electronic Resource
    Astrocytic pathology of methionine sulfoximine-induced encephalopathy (1989)
    Springer
    Acta neuropathologica 77 (1989), S. 357-368 
    Details
    ISSN: 1432-0533
    Keywords: Hepatic encephalopathy ; Glutamine synthetase ; Methionine sulfoximine ; Oligodendrocyte ; Astrocyte
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To investigate the roles imposed on astrocytes for glutamate metabolism, a specific inhibitor of glutamine synthetase (GS), methionine sulfoximine (MSO), was repeatedly administered to rats and histopathological changes were correlated with glycogen accumulation and the immunocytochemistry of GS and glial fibrillary acidic protein (GFAP). Prolonged MSO-loading (every 12 h up to three times, 100–150 mg/kg body weight) brought about the appearance of astrocytes with swollen, watery nuclei reminiscent of Alzheimer II glia chiefly in the neocortex, hippocampus and lateral thalamus after 24 h. Concomitantly, profound accumulation of glycogen ensued in the superficial three layers of the neocortex, hippocampus and pyriform cortex. GS immunoreactivity appeared enhanced in the cortex, hippocampus and lateral thalamus with parallel increase in GFAP immunoreactivity after prolonged treatment. Oligodendrocytes in the diencephalon and brain stem also normally contained GS immunoreactivity. Some animals developed necrotic lesions in the dorsolateral neocortex. The area of glycogen accumulation coincided with the known distribution ofN-methyld-aspartate (NMDA) glutamate receptors and, thus, GS may play important roles in NMDA receptor-mediated glutamate metabolism. The Alzheimer II type changes, however, did not correlate with NMDA-receptor distribution. These results indicate certain regionalizations in the roles of astrocytes and oligodendrocytes in glutamate and ammonia metabolisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00687370
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  • 9
    Electronic Resource
    Electronic Resource
    Low-dose dexamethasone suppression test in Japanese patients with Parkinson's disease (1987)
    Springer
    Journal of neurology 234 (1987), S. 264-265 
    Details
    ISSN: 1432-1459
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00618264
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  • 10
    Electronic Resource
    Electronic Resource
    Amyotrophic lateral sclerosis and thyroid function (1989)
    Springer
    Journal of neurology 236 (1989), S. 373-374 
    Details
    ISSN: 1432-1459
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314387
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    Paper (German National Licenses)
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