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  • 1
    Electronic Resource
    Electronic Resource
    Rotational alignment of products from NOCl+Sr chemiluminescent reaction (1998)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 109 (1998), S. 1819-1823 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The chemiluminescent reactions Sr+NOCl→SrCl(A,B)+NO are studied under the single collision conditions in a beam-gas arrangement. The product rotational alignment 〈P2(J(circumflex)′⋅k(circumflex))〉=−0.40±0.05 for SrCl(B) is obtained from Sr+NOCl chemiluminescent reactions. In addition, the electronic state branching ratio and the product vibrational state distribution have been roughly estimated by simulating the chemiluminescent spectra of SrCl. Quasiclassical trajectory (QCT) calculations for the Sr+NOCl reaction as a three-body system have been carried out. The calculated results agree well with the experimental ones. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.476757
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  • 2
    Electronic Resource
    Electronic Resource
    Mutations in the gene encoding gap junction protein β-3 associated with autosomal dominant hearing impairment (1998)
    [s.l.] : Nature America Inc.
    Nature genetics 20 (1998), S. 370-373 
    Details
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Hearing impairment is the most commonly occurring condition that affects the ability of humans to communicate. More than 50% of the cases of profound early-onset deafness are caused by genetic factors. Over 40 loci for non-syndromic deafness have been genetically mapped, and mutations in several ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/3845
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal stability of the cellulose synthase complex of Acetobacter xylinum (1999)
    Springer
    Cellulose 6 (1999), S. 137-152 
    Details
    ISSN: 1572-882X
    Keywords: Acetobacter xylinum ; cellulose synthase ; thermostability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The thermal stability of the cellulose synthase complex of Acetobacter xylinum has been analyzed in terms of enzyme activity loss as well as detection of its two major components (83 kDa and 93 kDa polypeptides) in polyacrylamide gels under different electrophoretic sample treatment conditions. The cellulose synthase complex intrinsically is a thermally unstable enzyme and quickly loses its in vitro activity beyond 35° C. The 83 kDa polypeptide has been found to be more labile than the 93 kDa polypeptide. When boiled in lithium dodecyl sulfate (LDS) buffer, the 83 kDa polypeptide is destroyed through peptide hydrolysis while the 93 kDa polypeptide remains uncleaved. The 83 kDa polypeptide is destroyed in LDS buffer at elevated temperatures beyond 55° C. When boiled in the absence of LDS buffer, the 83 kDa polypeptide is completely aggregated, while the 93 kDa polypeptide is only partially aggregated. In the absence of LDS buffer, the complete thermal aggregation of the 83 kDa polypeptide occurs at elevated temperatures beyond 85° C. The aggregation process has been quantitatively analyzed by a newly‐introduced quantitative index, Td (the temperature at which half the quantity of 83 kDa polypeptide disappears due to aggregation). The Td determined for the 83 kDa polypeptide in the product‐entrapped fraction is 48° C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009208610922
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  • 4
    Electronic Resource
    Electronic Resource
    Immunochemical studies of the cellulose synthase complex inAcetobacter xylinum (1996)
    Springer
    Cellulose 3 (1996), S. 63-75 
    Details
    ISSN: 1572-882X
    Keywords: antibodies ; cellulose synthase ; Acetobacter xylinum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract An immunochemical method was used to analyse the 83 and 93 Kd polypeptides of cellulose synthase from Acetobacter xylinum.Polyclonal antibodies were raised against the LDS-PAGE-fractionated 83 and 93 Kd polypeptides isolated from A. xylinum.Using these antibodies, the 83 and 93 Kd polypeptides were localized in the different fractions during purification of cellulose synthase, and the ratio of these two polypeptides was determined to be 1∶1. A differential solubilization of the 83 and 93 Kd polypeptides from the cell strongly suggested that the mechanism by which these two polypeptides originate from a single acsAB gene product (Saxena et al.,1994) must be via a post-translational cleavage. The results of trypsin treatment of the membrane fraction used in the purification of cellulose synthase were analysed to determine the fate of these two polypeptides and their relationship to the enzyme activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02228791
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  • 5
    Electronic Resource
    Electronic Resource
    Nanofabrication of II-VI Semiconductor Quantum Wires and Dots (1995)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 182-184 (Feb. 1995), p. 87-92 
    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/2011/0528/02/01/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.182-184.87.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Low temperature co-fired AlN multilayer substrates (1997)
    Springer
    Journal of materials science 8 (1997), S. 233-238 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A process for low temperature co-fired AlN multilayer substrates is introduced. Some key factors about this technology are delineated and discussed. A two-step burnout process may solve the contradiction between tungsten oxidation and carbon removal. Sintering with additives appears to improve densification at low temperature. DyN was found as a second phase in AlN ceramics, which suggests that Dy2O3 efficiently removes oxygen from the AlN lattice. The microstructure of AlN ceramics is ideal for achieving high thermal conductivity. Analysis of the AlN-W interface showed there were no second phases, but there was probably an intricate interlocking structure between the grains of tungsten and AlN. Co-firing at 1650°C for 4 h produced an AlN multilayer substrate with a thermal conductivity of up to 130 W m−1 K−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018514717837
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  • 7
    Electronic Resource
    Electronic Resource
    Comparative mapping of QTLs for agronomic traits of rice across environments by using a doubled-haploid population (1997)
    Springer
    Theoretical and applied genetics 94 (1997), S. 145-150 
    Details
    ISSN: 1432-2242
    Keywords: Key wordsDoubled-haploid population  ; Quantitative trait loci (QTLs)  ;  Molecular map  ; Rice  ;  G×E interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We report here the RFLP mapping of quantitative trait loci (QTLs) which affect some important agronomic traits in cultivated rice. An anther culture-derived doubled-haploid (DH) population was established from a cross between indica and japonica rice varieties. A molecular linkage map comprising 137 markers was constructed based on this population which covered the rice genome at intervals of 14.8 cM on average. The linkage map was used to locate QTLs for such important agronomic traits as heading date, plant height, number of spikelets per panicle, number of grains per panicle, 1 000-grain weight and the percentage of seed set, by interval mapping. Evidence of genotype-by-environment interaction was found by comparing QTL maps of the same population grown in three diverse environments. A total of 22 QTLs for six agronomic traits was detected which were significant in at least one environment, but only seven were significant in all three environments; seven were significant in two environments and eight could only be detected in a single environment. However, QTLs-by-environment interaction was trait dependent. QTLs for spikelets and grains per panicle were common across environments while traits like heading date and plant height were more sensitive to environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050393
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  • 8
    Electronic Resource
    Electronic Resource
    Morphologies and growth mechanisms of aluminium nitride whiskers (1997)
    Springer
    Journal of materials science 32 (1997), S. 1969-1975 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Morphologies of AlN whiskers grown by the vapour–liquid–solid mechanism (VLS) were investigated. Several types of whisker structures, such as growth hill, wavy, crossed and stack structures, were found due to the variation of growth conditions. Growth mechanisms and orientations of AlN whiskers were also studied. Besides preferential crystallographic planes, several other planes were found to be growth layers due to the perturbation of the AlN lattice change caused by dissolution of oxygen. A screw dislocation growth mechanism was clearly confirmed. An oblique growth mechanism was found in this work, which may be the result of two processes: the vapour–liquid–solid process and dissolution of oxygen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018589831042
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  • 9
    Electronic Resource
    Electronic Resource
    Structure characteristics of AlN whiskers fabricated by the carbo-thermal reduction method (1998)
    Springer
    Journal of materials science 33 (1998), S. 4249-4253 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract With Al2O3 and graphite as raw materials, CaF2 and B2O3 as additives, AlN whiskers were fabricated by a carbo-thermal reduction method. The fabrication mechanism and growth characteristics of AlN whiskers were investigated. At the beginning of the high-temperature fabrication, AlN whiskers grew by the vapour/liquid/solid (VLS) mechanism, and defects existed on the surfaces of the whiskers. In later stages, the VLS mechanism possibly changed to a vapour/solid (VS) mechanism, and the defects disappeared. The orientation of most AlN whiskers was normal to $$\{ 10\bar 1n\} $$ (n=0, 1, 2, 3), and normal to $$\{ \bar 12\bar 1n\} $$ (n=0, 1, 2). The growth processes of both two-dimensional nucleation and screw dislocations existed at the same time. © 1998 Kluwer Academic Publishers
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004438210417
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  • 10
    Electronic Resource
    Electronic Resource
    Analysis of quantitative trait loci which contribute to anther culturability in rice (Oryza sativa L.) (1998)
    Springer
    Molecular breeding 4 (1998), S. 165-172 
    Details
    ISSN: 1572-9788
    Keywords: rice ; anther culturability ; doubled haploid population ; QTLs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Anther culturability of rice is significantly different between indica and japonica varieties. A doubled haploid (DH) population was established via anther culture of an indica/japonica hybrid on SK3 medium, which had been shown particularly suitable for anther culture of indica/japonica hybrids. For analyzing the quantitative trait loci (QTLs) responsible for anther culturability, anthers of the DH lines were again cultured with SK3 medium and parameters for four traits representing the anther culturability were surveyed and analyzed with the molecular map constructed from the same DH population. The parameters for four major traits were as follows: callus induction frequency (CI), green plantlet differentiation frequency (GPD), albino plantlet differentiation frequency (APD), and green plantlet yield frequency (GPY). All four traits displayed continuous distributions among the DH lines. The correlation coefficients between these traits were also tested and showed that there was no relationship between callus induction and green plantlet differentiation frequencies, but both showed strong positive correlation with the frequency of green plantlet yield. For callus induction frequency, five QTLs were identified on chromosomes 6, 7, 8, 10 and 12. Two QTLs for green plantlet differentiation frequency were located on chromosomes 1 and 9. There was a major QTL for albino plantlet differentiation frequency on chromosome 9. No independent QTL was found for green plantlet yield frequency. The results may be useful in the selection of parents with high response to anther culture for rice haploid breeding and in the establishment of permanent DH populations for molecular mapping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009692221152
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