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  • Articles: DFG German National Licenses  (36)
  • 1995-1999  (22)
  • 1985-1989  (14)
  • 1
    Electronic Resource
    Electronic Resource
    Dislocations in In0.1Ga0.9As/GaAs multilayers epitaxially grown on Si substrates (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1567-1568 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Dislocations in In0.1Ga0.9As/GaAs multilayers grown on Si substrates have been examined by using transmission electron microscopy. It is found that two types of misfit dislocations exist at the interfaces of multilayers which are composed of layers thicker than the critical thickness (hc). One is a 60° dislocation and the other is a pure edge dislocation. It is considered that a 60° dislocation can glide to adjacent layers from the interface, while a pure edge dislocation can also go out of the interface. The stress field caused by closely located dislocations introduces bowing of dislocation lines followed by cross slipping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102246
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Formation and observation of 50 nm polarized domains in PbZr1−xTixO3 thin film using scanning probe microscope (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 2358-2359 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nanometer size polarized domains were written in a PbZr1−xTixO3 (PZT) thin film using an atomic force microscope (AFM) and the relationship between the polarized domain and the grain of the film was investigated. The polarized domain was formed by applying a pulse voltage to the ferroelectric PZT thin film through a conductive AFM tip. The polarized domain structure was observed by imaging the piezoelectric-induced surface vibration by an AFM with an ac voltage applied between the tip and the bottom electrode of a sample. The polarized domains with a diameter of 50 nm were written within a single grain. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.115857
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Functional thrombomodulin expression on epithelial skin tumours as a differentiation marker for suprabasal keratinocytes (1996)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 135 (1996), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary In normal human skin, immtmoreactive thrombomodulin (TM) is expressed in a strict differentiation related pattern. solely in suprabasal spinous layer keratinocytes. To evaluate the polential application of TM as a differentiation marker for keratinocyte-derived skin tumours, we have studied immunohistopathological, biochemical and functional TM activities in various skin tumours. Immunoreactive, full sized and enzymatically active TM was expressed in keratinocyte-derived skin tumours (squamous cell carcinoma, seborrhoeic keratosis and partly Bowen's disease), as well as normal epidermal keratinoeytes and endothelial cells. However, no TM was detected in basal cell carcinotnas, senile keratosis or non-squanious epithelial tumours such as malignant melanoma, naevus pigmentosus and Paget's disease. Interestingly, decreased expression was observed in verruca vulgaris. These findings suggested that differentiation-dependent TM expression was restricted to epithelial skin tumours and undetectable on neural crest derived tumours. TM is a differentiation marker for spinous layer keratinocytes and is a useful tool in histopathological study of epithelial tumours.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.1996.tb01145.x
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  • 4
    Electronic Resource
    Electronic Resource
    FACTORS CONTROLLING THE FATIGUE STRENGTH OF NITRIDED TITANIUM (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 20 (1997), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— The factors affecting the fatigue strength of nitrided titanium were clarified. The fatigue strength depended strongly on the fracture strength of the compound layer formed on the surface by nitriding. We found a Hall-Petch relationship between the fatigue strength of nitrided titanium and the grain size. The findings indicated that the reduction in the fatigue strength by nitriding results from both the formation of the compound layer possessing low fracture strength and grain growth occurring from ordinary nitriding. Furthermore, low-temperature nitriding (620°C, 24 h) was proposed to suppress grain growth. This treatment method improved not only the wear resistance and the corrosion resistance but also the fatigue strength of titanium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.1997.tb00404.x
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  • 5
    Electronic Resource
    Electronic Resource
    Electrophoretic changes in olfactory system proteins in masu salmon during parr-smolt transformation (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 47 (1995), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Changes in cytosolic proteins of the olfactory system (olfactory epithelium, olfactory nerve and olfactory bulb) and the telencephalon of masu salmon Oncorhynchus masou were analysed by two-dimensional polyacrylamide gel electrophoresis during parr-smolt transformation; parr, pre-smolt and full-smolt stages. In the olfactory system, several protein spots appeared and disappeared in the course of smolting. One protein spot in particular with an estimated molecular weight of 27 kDa and isoelectric point of 5.6 (M27) disappeared in common with the olfactory system during smolting. The disappearance of M27 was also observed in the telencephalon. These proteins, which appeared and disappeared, may reflect the changes in olfactory function during smolting. Simultaneously, the present study confirmed a salmonid olfactory specific protein of 24 kDa (N24), which existed in the olfactory system but not in the telencephalon, as a single neutral protein spot in masu salmon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1995.tb06028.x
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  • 6
    Electronic Resource
    Electronic Resource
    Central Facilitative Activities of YM-14673, a New TRH Derivative (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 553 (1989), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1989.tb54564.x
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of YM-14673, a New TRH Derivative, on Behavioral Changes after Focal Cerebral Ischemia (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 553 (1989), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1989.tb54565.x
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  • 8
    Electronic Resource
    Electronic Resource
    Parasitic nodule of the thyroid in a patient with Graves’ disease (1999)
    Springer
    Virchows Archiv 434 (1999), S. 241-244 
    Details
    ISSN: 1432-2307
    Keywords: Key words Thyroid ; Parasitic nodule ; Graves’ disease ; Papillary carcinoma ; Aberrant lateral thyroid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We report a case of a parasitic nodule of the thyroid in a patient with Graves’ disease, which mimicked a lymph node metastasis from a primary occult thyroid carcinoma. The patient was a 67-year-old Japanese woman with a past history of subtotal thyroidectomy for Graves’ disease, who was referred to our hospital because of a right cervical mass. A lymph node-like lesion measuring 1.5 cm in diameter was palpable, distinct from the remnant of the right thyroid lobe. Thyroid scintigraphy using 123I-Na revealed a hot lesion at the upper lateral portion of the right thyroid lobe, and this was resected. Microscopically, the mass showed thyroid follicles with lymphocytic infiltration and lymphoid follicles. Clear ground glass nuclei, nuclear grooving and intranuclear inclusions were not observed. No morphological evidence of the lymph node was found in the mass by reticulin staining. Parasitic nodules of the thyroid in patients with Graves’ disease may mimic a metastatic carcinoma of the thyroid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004280050334
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  • 9
    Electronic Resource
    Electronic Resource
    Antagonizing effects of YM-14673, a new TRH derivative, on behavioral and electroencephalographic changes in reserpinized animals (1988)
    Springer
    Psychopharmacology 95 (1988), S. 162-166 
    Details
    ISSN: 1432-2072
    Keywords: YM-14673 ; TRH ; Anti-reserpine action ; PGO wave
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Effects of YM-14673 (Nα-[{(S)-4-oxo-2-azetidinyl}-carbonyl]-l-histidyl-l-prolinamide dihydrate), a new TRH derivative, on reserpine-induced behavioural and electroencephalographic changes were observed in comparison with those of TRH. YM-14673 antagonized reserpine-induced hypothermia and decrease in convulsion threshold in mice. The number of PGO waves recorded from the lateral geniculate body was decreased by administration of YM-14673 in reserpinized cats. The anti-reserpine activity of intravenous YM-14673 was about 8–20 times more potent than that of TRH. In inhibiting reserpine-induced hypothermia, the oral ED2°C relative to IV ED2°C as an indirect indication of absorption rate of the drugs was 15 for both YM-14673 and TRH. These results suggest that YM-14673 possesses more potent facilitatory effects on the central monoamine systems than TRH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00174502
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  • 10
    Electronic Resource
    Electronic Resource
    Tall cell variant of papillary thyroid carcinoma with foci of columnar cell component (1999)
    Springer
    Virchows Archiv 434 (1999), S. 173-175 
    Details
    ISSN: 1432-2307
    Keywords: Key words Thyroid ; Papillary carcinoma ; Tall cell variant ; Columnar cell variant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We report a case of the tall call variant of papillary thyroid carcinoma with foci of columnar cell component in a 67-year-old Japanese man. Tall cell variant occupied more than 70% of the tumour, and columnar cell component was of two types in representative sections. One showed striking stratification of nuclei with scanty cytoplasm, and the other appeared clear. Characteristic nuclear features of papillary carcinoma were also observed in the area of the tall cell variant. The patient died of the thyroid cancer with aspiration pneumonia 10 years and 6 months after operation. Although autopsy was not performed, metastatic lymph nodes of the neck removed during life also showed papillary carcinoma with both tall cell and columnar cell components. Our case indicates that tall cell and columnar cell variants may coexist in the same tumour although the pathogenesis remains unclear.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004280050322
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