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  • 1985-1989  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Tertiary butylarsine grown GaAs solar cell (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 671-673 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High quality, intentionally doped (both p and n type) gallium arsenide layers have been grown using trimethylgallium and tertiary butylarsine in a low-pressure metalorganic chemical vapor deposition reactor. Using an alternate arsenic source, namely, tertiary butylarsine, a concentrator GaAs solar cell has been fabricated. Under 37 sun, air mass 1.5 illumination, the cell had an open-circuit voltage of 1.095 V, a fill factor of 83%, and an overall efficiency of 18.5%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100883
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Velocity profile on quartz crystals oscillating in liquids (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 2630-2635 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The particle velocity distribution on the surface of AT-cut quartz crystals oscillating in liquid is investigated. The distribution, amplitude, and direction of surface motion are determined. This study improves the understanding of the oscillation characteristics of quartz crystals in solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342772
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Prenatal enzymatic diagnosis and exclusion of Krabbe's disease (globoid-cell leukodystrophy) using chorionic villi in five risk pregnancies (1987)
    Springer
    Human genetics 〈Berlin〉 77 (1987), S. 342-344 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Galactosyl ceramide β-galactosidase activity was determined in chorionic villi (CV) samples obtained between the 9th and 11th weeks of gestation from 5 women with pregnancies at risk for Krabbe's disease (globoid-cell leukodystrophy, KD). These enzyme activities were compared with those in controls, as well as with those in cultured amniotic fluid cells (AFC) from one of the five at-risk pregnancies and from 29 KD-risk pregnancies studied previously. The results of these CV enzyme analyses were such that one case of fetal KD was clearly diagnosable, one fetal genotype heterozygous for KD was presumed, and three normal fetal genotypes were suggested. The use of both uncultured and cultered CV can be recommended for prenatal KD testing, but AFC may continue to play an important role, too. Of the 58 prenatal KD tests we have evaluated since 1974, a positive diagnosis of Krabbe's disease was made (and confirmed after termination of pregnancy when feasible) in 23 which is significantly more than 25% of 58.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00291423
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Detection of chromosome aberrations in the human interphase nucleus by visualization of specific target DNAs with radioactive and non-radioactive in situ hybridization techniques: diagnosis of trisomy 18 with probe L1.84 (1986)
    Springer
    Human genetics 〈Berlin〉 74 (1986), S. 346-352 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The localization of chromosome 18 in human interphase nuclei is demonstrated by use of radioactive and nonradioactive in situ hybridization techniques with a DNA clone designated L1.84. This clone represents a distinct subpopulation of the repetitive human alphoid DNA family, located in the centric region of chromosome 18. Under stringent hybridization conditions hybridization of L1.84 is restricted to chromosome 18 and reflects the number of these chromosomes present in the nuclei, namely, two in normal diploid human cells and three in nuclei from cells with trisomy 18. Under conditions of low stringency, cross-hybridization with other subpopulations of the alphoid DNA family occurs in the centromeric regions of the whole chromosome complement, and numerous hybridization sites are detected over interphase nuclei. Detection of chromosome-specific target DNAs by non-radioactive in situ hybridization with appropriate DNA probes cloned from individual chromosomal subregions presents a rapid means of identifying directly numerical or even structural chromosome aberrations in the interphase nucleus. Present limitations and future applications of interphase cytogenetics are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00280484
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Specific staining of human chromosomes in Chinese hamster x man hybrid cell lines demonstrates interphase chromosome territories (1985)
    Springer
    Human genetics 〈Berlin〉 71 (1985), S. 281-287 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In spite of Carl Rabl's (1885) and Theodor Boveri's (1909) early hypothesis that chromosomes occupy discrete territories or domains within the interphase nucleus, evidence in favor pf this hypothesis has been limited and indirect so far in higher plants and animals. The alternative possibility that the chromatin fiber of single chromosomes might be extended throughout the major part of even the whole interphase nucleus has been considered for many years. In the latter case, chromosomes would only exist as discrete chromatin bodies during mitosis but not during interphase. Both possibilities are compatible with Boveri's well established paradigm of chromosome individuality. Here we show that an active human X chromosome contained as the only human chromosome in a Chinese hamster x man hybrid cell line can be visualized both in metaphse plates and in interphase nuclei after in situ hybridization with either 3H- or biotin-labeled human genomic DNA. We demonstrate that this chromosome is organized as a distinct chromatin body throughout interphase. In addition, evidence for the territorial organization of human chromosomes is also presented for another hybrid cell line containing several autosomes and the human X chromosome. These findings are discussed in the context of our present knowledge of the organization and topography of interphase chromosomes. General applications of a strategy aimed at specific staining of individual chromosomes in experimental and clinical cytogenetics are briefly considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388452
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The influence of stand density and canopy position on sulfur content in needles of Norway spruce (Picea abies L. Karst.) (1985)
    Springer
    Water, air & soil pollution 25 (1985), S. 321-329 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Analysis of total S in tree foliage has become widely accepted as a means of assessing S pollution of forests when air quality data are lacking. An investigation of total S content of mixed needle samples of different age and canopy height from two stands of young Norway spruce with different densities showed that S-content exceeded the maximum natural S-content (i.e. in the absence of SO2-pollution) for spruce. Significantly higher average needle S contents were encountered with decreasing stand density. Changed aerodynamic roughness and physiological status of thinned trees indicated combined action of atmospheric and tree physiological variables on S deposition and uptake in forest ecosystems. A marked increase in S content from 1 yr old to older needles and from the lower to the upper canopy was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00208458
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    Paper (German National Licenses)
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