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  • Springer  (52)
  • 1980-1984  (30)
  • 1975-1979  (22)
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  • 1
    Electronic Resource
    Electronic Resource
    Genetic regulation of erythrocyte autoantibody production in New Zealand black mice (1983)
    Springer
    Immunogenetics 18 (1983), S. 241-254 
    Details
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The incidences of positive anti-erythrocyte autoantibodies (AEA) in New Zealand Black (NZB), C57BL/6, their F1, F2 hybrid, and the F1 × NZB backcross mice were 100, 0, 0, 17, and 51%, respectively. This finding is in keeping with the idea that a combined effect of one to three dominant predisposing NZB gene(s) and a single dominant modifying C57BL/6 gene regulates the AEA production. Studies suggested that the modifying locusAem-1 is loosely linked toMup-1 locus on chromosome 4, and the gene order isAem-1: Mup-1: Gpd-1. We analyzed the effects of theAem-1 locus on other autoimmune traits and found that the gene action ofAem-1 is unrelated to the spontaneous productions of dsDNA-specific antibodies, the retroviral gp70-anti-gp70 immune complexes and natural thymocytotoxic autoantibod ies and to the serum level of retroviral gp70. A significant association was observed between the negative AEA and the low (normal) serum IgM level in (C57BL/6 × NZB)F1 × NZB backcross mice. It remains to be determined whether theAem-1 locus also controls the serum IgM level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00952963
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  • 2
    Electronic Resource
    Electronic Resource
    Photoluminescence of as-grown CuAlS2 prepared by iodine transport method (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1939-1943 
    Details
    ISSN: 0392-6737
    Keywords: Photoluminescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Due nuove bande di luminescenza sono state osservate in cristalli di CuAlS2 come-cresciuti, preparati mediante trasporto di iodio da Al2S3 e Cu2S. La banda con la minore lunghezza d'onda a 77 K appare a circa 2.95 eV, mostrando uno spostamento di spettro con l'intensità di eccitazione, ed è considerata come dovuta all'emissione di coppie donatore-accettore. A temperatura ambiente, l'emissione sembra diventare una transizione da donatore a buca libera. L'emissione con la maggiore lunghezza d'onda appare a 1.8 eV con una grande semiampiezza di 0.5 eV, ha una sua caratteristica banda di eccitazione ed è considerata dovuta ad un centro localizzato.
    Abstract: Резюме В кристаллах CuAlS2, приготовленных методом переноса иода из Al2S2 и Cu2S, наблюдаются две новых люминесцентных полосы. Коротковолновая полоса при 77 К появляерся 2.95 эВ, обнаруживая спектральный сдвиг с интенсивностью возбуждения. Полагается, что эта полоса обусловлена излучением доноракцепторных пар. При комнатной температуре излучение, по-видимому, изменяет переход, «донор-свободная дырка». Длинноволновое излучение появляется при 1.8 эВ с широкой полушириной 0.5 эВ, обладая собственной характеристической полосой возбуждения. Полагается, что это излучение обусловлено локализованным центром.
    Notes: Summary Two new luminescence bands have been observed in as-grown CuAlS2 crystals prepared by iodine transport from Al2S3 and Cu2S. The shorter-wave-length band at 77K appears at around 2.95 eV, showing a spectral shift with excitation intensity, and is considered to be due to a donor-acceptor pair emission. At room temperature, the emission seems to change to a donor-to-free-hole transition. The longer-wave-length emission appears at 1.8 eV with broad half-width of 0.5 eV, having its own characteristic excitation band, and is considered to be due to a localized centre.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457891
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  • 3
    Electronic Resource
    Electronic Resource
    Photoluminescence of CuGaS2 and heterostructure formation with sputtered ZnS (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1933-1938 
    Details
    ISSN: 0392-6737
    Keywords: Photoluminescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto I cristalli di CuGaS2 cresciuti per trasporto di iodio mostrano fotoluminescenza a temperatura ambiente a 2.45 eV e 1.44 eV. Si mostra che la distribuzione spettrale dell'emissione verde è relativamente ben descritta dalla curva calcolata per una transizione diretta da banda a banda con selezionek. Si è tentata la formazione dell'eterogiunzione tra cristalli di CuGaS2 trattati con zolfo e film amorfi di ZnS a bassa resistività, preparati mediante spruzzamento catodico a temperatura ambiente. La caratteristicaI–V del diodo mostra un comportamento rettificante, ma non si è osservata luminescenza per iniezione.
    Abstract: Резюме Кристаллы CuGaS2 о⇃наруживают при комнатной температуре фатолюминесценцию при 2.45 эВ и 1.44 эВ. Показывается что спектральное распределение зеленого излучения относительно хорошо описывется вычисленной кривой для прямого перехода зоназона сk-отбором. Исследуется образование гетероперехода между кристаллами CuGaS2 и аморфными пленками ZnS с низким сопротивлением, притотовленными распылением при комнатной температуре.I–V характеристика диода обнаруживает выпрямляющее, но инжекционная люминесценция не наблюдается.
    Notes: Summary CuGaS2 crystals grown by iodine transport exhibit room temperature photoluminescences at 2.45 eV and at 1.44 eV. The spectral distribution of the green emission is shown to be relatively well described by the calculated curve for a direct band-to-band transition withk-selection. The heterojunction formation has been tried between sulfur-treated CuGaS2 crystals and low-resistivity amorphous ZnS films prepared by sputtering at room temperature. TheI–V characteristic of the diode shows rectifying behaviour, but no injection luminescence has been observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457890
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  • 4
    Electronic Resource
    Electronic Resource
    The statistical distributions for the elevation, velocity and acceleration of the surface of wind waves (1975)
    Springer
    Journal of oceanography 31 (1975), S. 93-104 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Water surface elevationsη(t), vertical surface velocities $$\dot \eta (t)$$ and vertical surface acceleration $$\dot \eta (t)$$ of wind-generated waves have been measured in a laboratory wind wave channel by using resistance-type wave gauges combined with an electronic differentiation circuits. Probability distributions of the values ofη(t), $$\dot \eta (t)$$ , and $$\ddot \eta (t)$$ have been determined from the wave records. In an initial stage of wave generation,i.e., when wind waves are generated at short fetches and low wind speeds, the observed distributions forη(t), $$\dot \eta (t)$$ and $$\ddot \eta (t)$$ are appreciately good fit to the distributions given by successive sum of a Gram-Charlier series, which has been derived following the formulation ofLonguet-Higgins (1963), by taking the weakly nonlinear effect into account. However, when wind waves develop with increasing wind speeds and fetches, the observed distributions deviate gradually from the Gram-Charlier series. Particularly, the deviations are remarkable for the distribution of $$\ddot \eta (t)$$ . When the wind speed increases, the observed distributions ofη(t), $$\dot \eta (t)$$ and $$\ddot \eta (t)$$ show the following characteristics: (i) the skewnesses of the distributions ofη(t) and $$\dot \eta (t)$$ decrease slightly, (ii) the skewness of $$\ddot \eta (t)$$ changes, at some wind speed, from positive small values to relatively large negative values, (iii) the kurtosis of the distribution ofη(t) decreases slightly but that of $$\dot \eta (t)$$ increases slightly and these characteristics seem to depend not so much on fetches, (iv) the kurtosis of the distribution of $$\ddot \eta (t)$$ increases rapidly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02107991
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  • 5
    Electronic Resource
    Electronic Resource
    Risk, risk aversion and many control variables (1983)
    Springer
    Journal of economics 43 (1983), S. 405-422 
    Details
    ISSN: 1617-7134
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01283188
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  • 6
    Electronic Resource
    Electronic Resource
    Combined effect of veratridine and sodium aspartate on the rabbit retinas in vitro (1977)
    Springer
    Cellular and molecular life sciences 33 (1977), S. 737-738 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Combined effect of veratridine and sodium aspartate on rabbit retinas in vitro was studied. Observations suggested that mode of action of veratridine on the PII and PIII components of ERGs was modified by the presence of sodium aspartate in perfusate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01944160
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  • 7
    Electronic Resource
    Electronic Resource
    Fast wavelets recorded through orbital skin-electrodes near the lateral canthus of the human eye during ERG-neutralization (1977)
    Springer
    Cellular and molecular life sciences 33 (1977), S. 231-232 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Fast wavelets were recorded through skin-electrodes near the lateral canthus of the human eye while the electroretinogram (ERG) was neutralized by the nasal deviation of the visual axis. A high possibility is noted that these wavelets are the action potential of the optic nerve, which has failed to be picked up clinically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02124083
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  • 8
    Electronic Resource
    Electronic Resource
    The relationship between ribosomal repeat length and genome size in Vicia (1984)
    Springer
    Chromosoma 89 (1984), S. 1-7 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The organization of the ribosomal RNA genes was examined in several species of Vicia in an attempt to determine whether a relationship exists between genome size and ribosomal repeat length. Species within this genus exhibit a sevenfold variation in haploid DNA content. Our data suggest that species with an intermediate genome size maintain one predominant Eco RI class of ribosomal repeat of about 9 kilobases (kb). In contrast, the smallest and largest genomes of Vicia possess one major and several minor classes. The possible relationship between repeat classes among species is discussed. We examined the species with the smallest (V. villosa) and largest (V. faba) genomes in closer detail by R-loop analysis of a satellite DNA from Hoechst 33258 dye-CsCl gradients. Heterogeneity was found in the length of the ribosomal repeat for both species, but no appreciable difference was observed in the distribution of these lengths, which averaged 11–12 kb. This heterogeneity is associated with the nontranscribed spacer region. Intervening sequences were not found in either the 25S or 18S coding regions of the ribosomal repeat of either of these two plants. A putative ribosomal RNA precursor of 7 kb was identified for both species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00302343
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  • 9
    Electronic Resource
    Electronic Resource
    Cytochemical demonstrations of protease in human peripheral blood cells by use of new α-naphthyl ester substrates (1983)
    Springer
    Histochemistry and cell biology 77 (1983), S. 299-302 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The proteases of human leukocytes were cytochemically studied by use of new α-naphthyl esters, tosyl-l-lysine-α-naphthyl ester (TLNE) and acetyl-l-tyrosine-α-naphthyl ester (ATNE). The hydrolytic activities were strong only in neutrophils, with both substrates. They were inhibited completely by DFP and chymostatin, but not by leupeptin and iodoacetate. These results indicate that chymotrypsin-like enzyme(s), capable of hydrolyzing both substrates, exist in neutrophils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00490892
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  • 10
    Electronic Resource
    Electronic Resource
    The characteristics of cobalt or copper salt-coordinated poly(4-vinylpyridine-co-2,4-diamino-6-vinyl-s-triazine) membrane for reverse osmosis (1981)
    Springer
    Polymer bulletin 6 (1981), S. 169-174 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Poly(4-vinylpyridine-co-2,4-diamino-6-vinyl-s-triazine) membranes in which a part of pyridine rings was coordinated with cobalt or copper salt, considerably enhanced salt rejection without appreciable reduction of water permeability. This is attributed to the change in the membrane structure into a polar character. The heat treatment of the uncharged membrane in the salt solution formed the same structure on the surface, but was not effective for improvement of salt rejection, only increasing the membrane strength to a small extent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00956284
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