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  • 1
    Electronic Resource
    Electronic Resource
    Nuclear spin dependence of polarization enhancement by multi-tilted foils studied by short-lived beta-emitters8B and12B (1993)
    Springer
    Hyperfine interactions 80 (1993), S. 1281-1286 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In order to study the basic mechanism of polarization enhancement realized by the multitilted foil technique, nuclear polarization of short-lived beta-emitter8B(T1/2=769 ms,I π=2+) was induced. Utilizing up to ten tilted foils, the polarization enhancement was measured as a function of the foil numbers. The observed enhancement for8B was combined with the previous results for12B(I π=1+,T 1/2=20 ms) which has the same atomic configurations but different nuclear spin. Analyzing these results in the framework of the classical vector model, the essential features of the enhancement depending on the nuclear spin was disclosed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00567492
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  • 2
    Electronic Resource
    Electronic Resource
    Convergent-Beam Electron Diffraction and Electron Microscope Studies on Decagonal Quasicrystals of Al-Ni-Fe and Al-Cu-Co Alloys (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 150-151 (Jan. 1994), p. 255-266 
    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/2011/0528/02/00/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.150-151.255.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Afferent connections of the prelunate visual association cortex (areas V4 and DP) (1990)
    Springer
    Anatomy and embryology 181 (1990), S. 19-30 
    Details
    ISSN: 1432-0568
    Keywords: Prestriate cortex ; Pulvinar ; Area V4 ; Area ; DP ; Temporo-basal association cortex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The afferent and efferent connections of the prelunate visual association area V4 of macaque monkeys were investigated by means of the horseradish peroxidase (HRP) method. The specific thalamic afferents from the dorsolateral segment of the medial pulvinar and the lateral segment of the inferior pulvinar were topographically organized. A band of cells was labelled in the intralaminar nuclei (nucl. centr. med. and lat., reaching into LD and the most dorsal part of VL), and a few cells in the interlaminar layers of the lateral geniculate body. Other diencephalic afferents included the claustrum, the nucleus basalis Meynert and the pars compacta of the substantia nigra. Ipsilateral cortical areas which projected into V4 included area 18 (V2), the inferior parietal cortex, the anterior and posterior parts of the superior temporal sulcus, the frontal eye fields and the temporo-basal association cortex on the lateral half of the parahippocampal gyrus and around the occipito-temporal sulcus. In the contralateral cortex, discontinuous regions in areas V4 and V5 on the prelunate gyrus and some cells at the 17/18-border were labelled. All regions in which labelled cells were found and, in addition a restricted region in the dorsal cap of the head and the tail of the caudate nucleus showed fibre and terminal labelling. In addition mesencephalic afferents and efferents were identified but not investigated in detail. An attempt to estimate the quantitative contribution of the various afferent systems to the prelunate cortex was made by counting the labelled cells in the different areas. The afferent and efferent organization of the prelunate visual association area indicates that it is incorporated in a network of cortical and subcortical regions involved in various aspects of visual behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00189724
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  • 4
    Electronic Resource
    Electronic Resource
    Functional respiratory chain studies in mitochondrial cytopathies. Support for mitochondrial DNA heteroplasmy in myoclonus epilepsy and ragged red fibers (MERRF) syndrome (1991)
    Springer
    Acta neuropathologica 81 (1991), S. 318-323 
    Details
    ISSN: 1432-0533
    Keywords: Mitochondrial disease ; Myoclonus epilepsy and ragged red fibers (MERRF) syndrome ; Mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes (MELAS) syndrome ; Polarographic studies ; Immunoblot studies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Mitochondrial respiratory chain function was investigated with polarographic and enzymatic studies, and correlated with immunoblot studies using a battery of probes against respiratory chain holocomplexes in a series of patients with myoclonus epilepsy and ragged red fibers (MERRF) syndrome. State III respiration rates in intact skeletal muscle mitochondria were normal in two cases, suggested site I deficiency in one case and a midrespiratory defect in another. Immunological studies of complex I showed reduced levels of several subunits with the apparent absence of two bands (which at 45 and 42 kDa, coincide with the predicted electrophoretic mobility of the ND5 gene product) in one case. Complex I, III and IV composition was normal in the other three cases indicating no major disruption of complex assembly. A differing severity of skeletal muscle respiratory chain impairment in a group of unrelated patients with severe cerebral clinical involvement is best explained by uneven tissue distribution between brain and muscle of a heteroplasmic mtDNA mutation. The relationship between MERRF and mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes (MELAS) encephalopathies is reappraised by extension of this hypothesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00305874
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  • 5
    Electronic Resource
    Electronic Resource
    Hypergalactosaemia in a patient with portal-hepatic venous and hepatic arterio-venous shunts detected by neonatal screening (1993)
    Springer
    European journal of pediatrics 152 (1993), S. 990-992 
    Details
    ISSN: 1432-1076
    Keywords: Hypergalactosaemia ; Portal-hepatic venous shunt ; Hepatic arterio-venous shunt ; Portosystemic shunting ; Newborn screening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Hypergalactosaemia was discovered in a newborn girl during routine metabolic screening. Hereditary enzyme deficiency was ruled out. She had multiple hepatic haemangiomas with portal-hepatic venous and hepatic arterio-venous shunts. Since she showed signs of high-output heart failure due to the arterio-venous shunt, hepatic artery embolization was performed at age 3 months. A galactose tolerance test was performed before and after embolization and when the haemangioma no longer appeared on ultrasonography. Even after embolization, the level of blood galactose was abnormally elevated in the galactose tolerance test, but the blood galactose was eliminated more rapidly than before embolization. When the hepatic haemangioma was no longer detected by ultrasonography, the peak galactose level decreased. We surmise that the hypergalactosaemia was due to these shunts. In cases of hypergalactosaemia of unknown cause; liver haemangioma with portal-hepatic venous shunting should be considered as a possible cause. If a hepatic arteriovenous shunt also exists, this may contribute to the effect of the portosystemic shunting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01957222
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  • 6
    Electronic Resource
    Electronic Resource
    Increase of I〈sub〉4〈/sub〉 at Melting Point Found in Polyethylene and Serious Thermal Hysteresis Found in Polypropylene (1992)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 105-110 (Jan. 1992), p. 1737-1740 
    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/2011/0528/01/59/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.105-110.1737.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Pathogenetic and therapeutic considerations of carotid-cavernous sinus fistulas (1994)
    Springer
    Acta neurochirurgica 127 (1994), S. 6-14 
    Details
    ISSN: 0942-0940
    Keywords: Carotid-cavernous fistula ; interventional radiology ; trauma ; aneurysm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Carotid-cavernous sinus fistula (CCF) is a syndrome in which arteriovenous shunts exist between the carotid artery and the cavernous sinus. These shunts vary widely in pathogenesis, angiogram, haemodynamics and treatment. Several systems of classification in terms of either haemodynamics, aetiology and/or pathogenesis have been reported, but they are not comprehensive. A more comprehensive and simpler nomenclature of classification is now required. Fifty seven cases of CCFs were analyzed and were classified according to their pathogenesis, angiography and treatment modalities. There were 11 traumatic CCFs with direct shunts (T-D group), and 2 traumatic CCFs with indirect shunts (T-I group). Spontaneous CCFs were divided into three groups. There were 37 spontaneous CCFs caused by dural arteriovenous shunts that were naturally classified as being indirect shunts (SD-I group). There were 5 spontaneous CCFs caused by suspected connective tissue disorders, such as fibromuscular dysplasia, Ehlers-Danlos syndrome etc.; these had direct shunts. Care was needed to avoid dissection of the artery or complications due to the fragility of connective tissue (SC-D group). There were 2 spontaneous CCFs caused by the rupture of an inflaclinoid aneurysm without any background of connective tissue disorder; these had direct shunts (SA-D group). By this system of grouping and use of abbreviations, each case of CCF can be clearly delineated in terms of its pathogenesis and selection for appropriate treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01808538
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  • 8
    Electronic Resource
    Electronic Resource
    Microstructural Evolution of a New Aerospace 7XXX Alloy during Retrogression and Re-Ageing Treatment (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 519-521 (July 2006), p. 345-350 
    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
    Notes: RRA treatment was applied to a high-Zn, 7XXX alloy under development for aerospaceapplications. Microstructure of the alloy is studied at different stages of the 3-step ageing process,by Transmission Electron Microscopy, in order to understand the corresponding evolution ofmechanical and corrosion properties. The Compression Yield Strength at the end of the hightemperature step was found higher than at the end of the 1st step, contrary to the conventional RRAtreatment. After re-ageing, the final CYS turned out significantly higher than at the T6 temper of thealloy, while the material remained sensitive to exfoliation corrosion
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.519-521.345.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Fabrication of Iron Oxide Nanostructures by Electron Beam-Induced Deposition (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 1101-1104 
    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
    Notes: Electron beam induced-deposition (EBID) is a promising technique for fabricatingnanometer-sized structures in a position- and size-controlled manner. The resolution of EBID is nowreaching down to subnanometers. However, the deposits obtained by EBID contain a large amount ofcarbon. Thus, carbon reduction techniques are needed. In this study, nanostructures, such asnanowires, were fabricated by EBID using an iron pentacarbonyl precursor. Several techniques toreduce carbon were applied, including post-deposition heat-treatments and the modification ofprecursor. It was found that the post-deposition heat-treatment in air resulted in a formation of Fe2O3,and that carbon-free Fe3O4 was formed by mixing a small amount of water vapor in the ironpentacarbonyl precursor
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.1101.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of temperature and delayed initial feeding on the survival and growth of Japanese flounder larvae (2005)
    Oxford, UK; Malden, USA : Blackwell Science Ltd
    Journal of fish biology 66 (2005), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The effects of the timing of initial feeding (0, 1, 2, 3 and 4 days after yolk exhaustion) and temperature (15, 18 and 21° C) on the point-of-no-return (PNR), survival and growth of laboratory-reared Japanese flounder Paralichthys olivaceus larvae were studied under controlled conditions. The larvae reached PNR on 7·7, 5·2 and 4·2 days-post-hatching (dph) at 15, 18 and 21° C, respectively. At each temperature, larval growth did not differ significantly among the delayed initial feedings 1 day before PNR but decreased significantly in larvae first fed after that. In the treatments where initial feeding was equally delayed, larvae grew significantly faster at 18 and 21° C than at 15° C. The larvae survived apparently better at 15 and 18° C than at 21° C when initial feeding was equally delayed. At each temperature, survival of the larvae first fed before PNR did not differ noticeably, while delayed initial feeding after that apparently reduced their survival. These results indicated that there existed a negatively temperature-dependent PNR in the Japanese flounder larvae. Survival and growth of the larvae strongly depended on temperature as well as the timing of initial feeding. High temperature accelerated the yolk exhaustion and growth of the larvae and thus reduced their starvation tolerance and survival. To avoid potential starvation mortality and obtain good growth, the Japanese flounder larvae must establish successful initial feeding within 2 days after yolk exhaustion at 15° C and within 1 day at both 18 and 21° C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0022-1112.2005.00601.x
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