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  • Polymer and Materials Science  (3)
  • Hybrid sterility  (2)
  • Liquid chromatography  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Catalytic oxidation and flow detection of acetaminophen at a dicyanobis(1,10-phenanthroline)iron(II)-modified electrode
    Amsterdam : Elsevier
    Analytica Chimica Acta 292 (1994), S. 107-112 
    Details
    ISSN: 0003-2670
    Keywords: Acetaminophen ; Amperometry ; Catalytic oxidation ; Chemically modified electrodes ; Dicyanobis(1,10-phenanthroline)iron(II) ; Flow injection ; Liquid chromatography ; Pharmaceuticals
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0003-2670(94)00033-6
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Direct injection of urine and determination of acetaminophen by micellar liquid chromatography with a wall-jet cell/carbon fibre microelectrode
    Amsterdam : Elsevier
    Analytica Chimica Acta 298 (1994), S. 415-421 
    Details
    ISSN: 0003-2670
    Keywords: Acetaminophen ; Liquid chromatography ; Micellar LC ; Urine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0003-2670(94)00284-3
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic basis of low-temperature-sensitive sterility in indica-japonica hybrids of rice as determined by RFLP analysis (1997)
    Springer
    Theoretical and applied genetics 95 (1997), S. 1092-1097 
    Details
    ISSN: 1432-2242
    Keywords: Key words Oryza sativa ; Hybrid sterility ; Ste loci ; Molecular markers ; Hybrid rice breeding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Low-temperature-sensitive sterility (LTSS) has become one of the major obstacles in indica-japonica hybrid rice breeding. In this study, we determined, using RFLP markers, the genetic basis of LTSS in two populations derived from crosses between indica and japonica parents, the BC1F1 of 3037/02428//3037 and the F2 of 3037/02428. The fertility segregation in the two populations under low-temperature conditions was used as a measurement of the temperature sensitivity of the various genotypes in the populations. A RFLP survey of bulked extremes from the BC1F1 population identified three genomic regions, two on chromosome 1 and one on chromosome 12, that were likely to contain genes for LTSS (or Ste loci). One-way ANOVA and QTL analysis using a total of 19 markers from these three genomic regions resolved three Ste loci in the BC1F1 population and two Ste loci in the F2 population. On the basis of chromosomal location these loci were distinct from those governing wide-compatibility identified in previous studies. Two- and three-way ANOVA showed that these loci acted essentially independent of each other in conditioning LTSS. The main mode of gene action was an interaction between the indica and the japonica alleles within each locus. For each respective locus this resulted in a drastic fertility reduction in the heterozygote state relative to the homozygote state. The results have significant implications in indica-japonica hybrid rice breeding programs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050667
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  • 4
    Electronic Resource
    Electronic Resource
    A genome-wide analysis of wide compatibility in rice and the precise location of the S5 locus in the molecular map (1997)
    Springer
    Theoretical and applied genetics 95 (1997), S. 809-814 
    Details
    ISSN: 1432-2242
    Keywords: Key words Oryza sativa L ; Indica and japonica ; Hybrid sterility ; Mapping ; Rice breeding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The discovery of wide-compatibility varieties (WCVs) that are able to produce normal fertility hybrids when crossed both to indica and japonica rice has enabled the fertility barrier between indica and japonica subspecies to be broken and provided the possibility of developing inter-subspecific hybrids in rice breeding programs. However, a considerable variation in the fertility level of hybrids from the same WCV crossed to different varieties has often been observed. One hypothesis for this variable fertility is that additional genes are involved in hybrid fertility besides the wide-compatibility gene (WCG). To assess such a possibility, we performed a genome-wide analysis by assaying a large population from a three-way cross ‘02428’/‘Nanjing 11’//‘Balilla’ using a total of 171 RFLP probes detecting 191 polymorphic loci distributed throughout the entire rice linkage map. Our analysis recovered 3 loci conferring significant effects on hybrid fertility. The major locus on chromosome 6 coincided in chromosomal location with the previously identified S 5 locus, and the 2 minor loci that mapped to chromosomes 2 and 12, respectively, were apparently distinct from all previously reported hybrid sterility genes. Interaction between the indica and japonica alleles at each of the loci caused a reduction in hybrid fertility. The joint effect of the 2 minor loci could lead to partial sterility even in the presence of the WCG. The location of the S 5 locus on the molecular marker linkage map was determined to be approximately 1.0 cM from the RFLP locus R2349. This tight linkage will be useful for marker-aided transfer of the WCG in hybrid rice breeding and for map-based cloning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050629
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  • 5
    Electronic Resource
    Electronic Resource
    Fractionation of linear polyethylene during bulk crystallization under high pressurePresented in part at the Dallas Meeting of the American Physical Society, High Polymers Division, March 1970. (1971)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 9 (1971), S. 2061-2080 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Two linear polyethylene fractions (Mη, 11,260 and 100,000) and mixtures of these fractions have been isothermally crystallized from the melt under pressures up to 3000 atm. Characterization of individually crystallized fractions with transmission electron microscopy indicates that pressure can be used to produce a crystallite whose thickness is a measure of the chain length within it. Although the high molecular weight fraction yields spherulites containing individually varying lamellae thicknesses, the maximum thickness of each lamella is a measure of the chain length within it. Both electron micrographs and differential thermal analysis results show that crystallization of homogeneous mixtures of the high and low molecular weight fractions under high pressure results in a distinct fractionation and segregation according to molecular weight.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1971.160091110
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  • 6
    Electronic Resource
    Electronic Resource
    Conformational changes in histone IV (1972)
    New York : Wiley-Blackwell
    Biopolymers 11 (1972), S. 375-397 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Conformational change of histone IV, induced by phosphate, have been investigated by observing the intrinsic fluorescence of tyrosine residues and circular dichroism (CD). There is a fast conformational change upon the addition of phosphate, followed by a slow process with time constants in the range of minutes to hours depending upon both the phosphate and histone concentrations. The CD results indicate α-helix formation in the fast process, and β-sheet formation in the slow one, although other secondary and tertiary structural changes also may occur. The histone concentration dependence of the fast process is consistent with dimerization. Divalent phosphate is about ten times more effective than monovalent phosphate in inducing conformational changes. All of the changes are reversible.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.1972.360110206
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  • 7
    Electronic Resource
    Electronic Resource
    Crystallization of poly(tetramethyl-p-silphenylene-dimethylsiloxane) (TMPS-DMS) block copolymers: Morphology and kineticsPaper presented in part at the IUPAC Meeting, September 10-14, 1973, Aberdeen, Scotland and at the International Microsymposium on Fusion and Crystallization of Polymers, June 1976, Leuven, Belgium.This work was carried out by H. M. Li in partial fulfillment of Ph. D. requirements. (1978)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 16 (1978), S. 1059-1070 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The crystallization behavior of random block copolymers of (tetramethyl-p-silphenylenesiloxane) and dimethylsiloxane has been studied over a wide range of temperature and composition. The copolymer melting temperature, glass transition temperature, rate of crystallization, crystallinity, and density decrease in magnitude as the dimethylsiloxane block content are raised in this two-component system. The crystal end-surface (interfacial) energy increases as the dimethylsiloxane mole fraction decreases in accord with other morphological observations. The morphological changes observed in these copolymers are consistent with the conclusions deduced from the crystallization kinetics. Negatively, birefringent spherulites are observed over the entire crystallization range investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1978.180160612
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