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  • 1
    Electronic Resource
    Electronic Resource
    Growth of Ge on a Te adsorbed Si(001) surface (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 4277-4285 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The growth process in the initial deposition stage of Ge films on an Si(001) surface where tellurium is adsorbed was investigated. The growth mode of these films was found to change to layered growth on a Te/Si(001) surface, i.e., Te atoms were observed on the surface of the Ge films as a result of successive site exchanges between the Te and Ge atoms. Thus, Te is believed to act as a surfactant to grow Ge in a layer-by-layer mode on a Si substrate. The growth process was observed in situ by reflection high-energy electron diffraction and low-energy electron diffraction, with the microstructure of Ge films being examined in detail using a transmission electron microscope.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350809
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of seed quality on seedling growth of white clover (Trifolium repens L.) (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 50 (1995), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The influence of seed quality on seedling growth of white clover cv Makibashiro plants was examined in a controlled environment. The average dry matter (DM) yield of 70-day-old seedlings from a poor-quality seed lot was significantly less than that from a high-quality seed lot. In both seed lots, a linear relationship between the DM yield and time from sowing was observed. The slope of regression of DM yield against time from sowing for the poor-quality seed lot was less than the equivalent slope of the high-quality seed lot, suggesting that possible avenues for increased DM accumulation in a high-quality seed lot are somewhat indirect (time of emergence, uniform emergence etc.); a direct effect of seed quality on the photosynthetic ability of plant tissue seems less likely to occur. The root: shoot ratios declined in both groups of plants with increasing age. Seedlings from the high-quality seed lot reached a stable root:shoot ratio (equilibrium state) much earlier than those from the poor quality seed lot. The seed quality had no influence on the proportion of DM partitioned to various organs. The results of this study are discussed in relation to field establishment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1995.tb02301.x
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  • 3
    Electronic Resource
    Electronic Resource
    Causes of low seed set in white clover (Trifolium repens L.) (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 48 (1993), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A field experiment was conducted to clarify the factors responsible for poor seed set in four white clover (Trifolium repens L.) cultivars. Although the mean number of ovules per floret was 5·18–5·29, the average number of seeds per floret was found to be only 1·23-1·82. A stainclearing technique was used to examine the cytoplasmic state of the embryo sac in intact, unfertilized, mature ovules and it was found that 28–33% of ovules per carpel were sterile. The abortion rate of fertilized ovules and immature seeds (7 days after pollination) ranged between 32 and 34%. Beyond this period, it was observed that only a very small proportion of the total seeds were lost. The observation of high pollen fertility and a high pollen load strongly suggests that poor pollination does not account for the reduced number of seeds per floret. A ‘nutrient competition’ hypothesis was proposed for high ovule sterility and post-fertilization abortion of developing seeds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1993.tb01839.x
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  • 4
    Electronic Resource
    Electronic Resource
    Surfactant-mediated growth of germanium on silicon (001) with submonolayer coverage of Sb and Te (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 2507-2511 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Surfactant-mediated growth of germanium on silicon (001) with submonolayer coverages of antimony and tellurium, respectively, was investigated with reflection high-energy electron diffraction and transmission electron microscopy. Approximately 0.2 monolayer of antimony is needed for a complete suppression of islanding for the growth at 450 °C. For growth at a lower temperature (270 °C), only approximately 10% of a monolayer antimony or tellurium is needed in order to obtain smooth epitaxial germanium layers. No differences could be detected between tellurium and antimony in the behavior as a surfactant. The performed surfactant-mediated growth experiments can be understood as the kinetic suppression of islanding due to a reduction in surface diffusion of germanium adatoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354690
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  • 5
    Electronic Resource
    Electronic Resource
    Seed production in white clover (Trifolium repens L.). II. Effect of autumn defoliation on potential seed yield and seed yield components (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 50 (1995), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A field experiment was conducted to assess the effect of autumn defoliation treatments on inflorescence production, potential seed yield and yield components of white clover cv Makibashiro. Between 10 July and 10 October 1992, white clover swards were subjected to one of three treatments: monthly cutting to 3–4 cm (4DEF), cutting to 3–4 cm on 10 August and 10 October (2DEF), and no cutting (control). The total numbers of inflorescences and the proportion of inflorescences in different development categories were counted throughout the period of seed crop development to determine the pattern of inflorescence development and optimum harvest date. There were consistent significant differences in inflorescence density between treatments. Plots which received the 2DEF treatment produced significantly more inflorescences than did the no-defoliation (control) and 4DEF-treatment plots. In this particular year the optimum harvest date (date at which the proportion of ripe inflorescences and potential seed yield was highest) was 26 July, approximately 30 d after peak flowering. Defoliation treatments had no effect on optimum harvest date. However, treatments differed in potential seed yield and ripe inflorescences on this date. The 2DEF treatment gave the highest potential seed yield because there were significantly more ripe inflorescences than either the contol or 4DEF plots. Control plots produced inflorescences with more florets than the other two defoliation treatments, but the differences were not always significant. Seed number per pod was higher in inflorescences obtained from previously defoliated plots than from control plots. The 1000-seed weight was significantly lower in inflorescences developed in 4DEF plots than those developed in 2DEF and control plots. The results are discussed in relation to the management of white clover seed crops and the importance of canopy structure and light intensity for seed production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1995.tb02307.x
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  • 6
    Electronic Resource
    Electronic Resource
    Chromosomal mapping of the human genes for the calmodulindependent protein phosphatase (calcineurin) catalytic subunit
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 181 (1991), S. 252-258 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(05)81410-X
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  • 7
    Electronic Resource
    Electronic Resource
    Association of Structural Polymorphism of the Dopamine D"2 Receptor Gene and Alcoholism
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 204 (1994), S. 1199-1205 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/bbrc.1994.2590
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  • 8
    Electronic Resource
    Electronic Resource
    Determination of trace amounts of some phenylamide pesticides by resonance raman spectrometry
    Amsterdam : Elsevier
    Analytica Chimica Acta 116 (1980), S. 1-6 
    Details
    ISSN: 0003-2670
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0003-2670(01)84307-5
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  • 9
    Electronic Resource
    Electronic Resource
    Determination of small amounts of some sulfonamide drugs by resonance raman spectrometry
    Amsterdam : Elsevier
    Analytica Chimica Acta 120 (1980), S. 209-215 
    Details
    ISSN: 0003-2670
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0003-2670(01)84364-6
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  • 10
    Electronic Resource
    Electronic Resource
    X-ray diffraction study of SPO-1 DNA
    Amsterdam : Elsevier
    BBA Section Nucleic Acids And Protein Synthesis 166 (1968), S. 717-719 
    Details
    ISSN: 0005-2787
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2787(68)90383-3
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