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  • Chemistry  (4)
  • Acrosome reaction  (1)
  • Gas-liquid chromatography (GLC)  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Fabrication of gas-chromatographic glass capillary columns of high efficiency with liquid crystal stationary phases (1980)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 3 (1980), S. 355-356 
    Details
    ISSN: 0935-6304
    Schlagwort(e): Gas-liquid chromatography (GLC) ; Open tubular glass capillary columns ; Blended stationary phases ; Liquid crystals ; Polycyclic aromatic hydrocarbons (PAH) ; Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jhrc.1240030710
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  • 2
    Digitale Medien
    Digitale Medien
    High-pressure solution reservoir for fabrication of capillary columns of reduced internal diameter (1983)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 6 (1983), S. 444-445 
    Details
    ISSN: 0935-6304
    Schlagwort(e): Gas chromatography ; Open-tubular columns ; Reduced diameter ; High pressure ; Coating reservoir ; Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jhrc.1240060810
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  • 3
    Digitale Medien
    Digitale Medien
    Acrosome reaction of stallion spermatozoa evaluated with monoclonal antibody and zona-free hamster eggs (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 27 (1990), S. 152-158 
    Details
    ISSN: 1040-452X
    Schlagwort(e): Stallion spermatozoa ; Acrosome reaction ; Monoclonal antibody ; Zona-free hamster eggs ; Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie
    Notizen: The acrosome of the stallion spermatozoon was visualized by indirect immunofluorescence with monoclonal antibody (18.6) which recognized an integral acrosomal membrane component. Localization was confirmed by electron microscopy using peroxidase labelled antibody. In fresh semen samples (n = 19), 73.9 ± 9.1% of the spermatozoa from five fertile stallions displayed a uniform bright fluorescence over their acrosome region. In two semen samples from an infertile stallion only 28% and 35% of spermatozoa showed the same pattern of fluorescence. Spermatozoa from fertile stallions incubated for up to 12 hours in TALP medium maintained motility and exhibited a significant progressive loss of acrosomes as detected by immunofluorescence. Alternatively, a similar loss of acrosomes could be induced with calcium ionophore A23187 over a 90 minute incubation. Ultrastructural observations and incubation with zona-free hamster eggs indicated that only with ionophore treatment was immunofluorescent acrosome loss correlated with a physiological acrosome reaction, while prolonged sperm incubation led to degenerative membrane changes. It was concluded that, if carefully validated, immunofluorescent localization of the acrosome of stallion sperm with monoclonal antibody could be used to monitor the acrosome reaction. Furthermore, definitive acrosome visualization would be valuable in assessing semen quality.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/mrd.1080270210
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  • 4
    Digitale Medien
    Digitale Medien
    Kinetics of the reaction of OH with pernitric and nitric acids (1984)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 16 (1984), S. 41-55 
    Details
    ISSN: 0538-8066
    Schlagwort(e): Chemistry ; Physical Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The absolute rate constants for the reactions of OH + HO2NO2 (1) and OH + HNO3 (2) have been measured with the technique of flash photolysis resonance fluorescence over the temperature ranges of 240-330 K at 760 torr He for reaction (1) and of 240-370 K at 50 and 760 torr He for reaction (2). Reactant concentrations were monitored continuously by ultraviolet and infrared spectrophotometry. The data can be fitted to the following Arrhenius expressions: \documentclass{article}\pagestyle{empty}\begin{document}$$ k_1 = \left( {5.9 \pm 0.4} \right) \times 10^{ - 13} \exp \left[ {{{\left( {650 \pm 30} \right)} \mathord{\left/ {\vphantom {{\left( {650 \pm 30} \right)} T}} \right. \kern-\nulldelimiterspace} T}} \right]{{{\rm cm}^{\rm 3} } \mathord{\left/ {\vphantom {{{\rm cm}^{\rm 3} } {{\rm molecule} \cdot {\rm s}}}} \right. \kern-\nulldelimiterspace} {{\rm molecule} \cdot {\rm s}}} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm CH}_{\rm 3} {\rm SiD}_{\rm 3} \mathop {\longrightarrow} \limits^3 {\rm CH}_{\rm 2} \raise1pt\hbox{=\kern-3.45 pt=} {\rm SiD}_{\rm 2} \left( {0.14} \right) $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ k_2 = \left( {8.3 \pm 0.9} \right) \times 10^{ - 15} \exp \left[ {{{\left( {850 \pm 40} \right)} \mathord{\left/ {\vphantom {{\left( {850 \pm 40} \right)} T}} \right. \kern-\nulldelimiterspace} T}} \right]{{{\rm cm}^{\rm 3} } \mathord{\left/ {\vphantom {{{\rm cm}^{\rm 3} } {{\rm molecule} \cdot {\rm s}}}} \right. \kern-\nulldelimiterspace} {{\rm molecule} \cdot {\rm s}}} $$\end{document} These results are in very good agreement with recent studies of reaction (2), and also of reaction (1) at 295 K.
    Zusätzliches Material: 9 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/kin.550160107
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  • 5
    Digitale Medien
    Digitale Medien
    The rate of the reaction of OH with HCl (1984)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 16 (1984), S. 1151-1160 
    Details
    ISSN: 0538-8066
    Schlagwort(e): Chemistry ; Physical Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The absolute rate constant for the OH + HCl reaction has been measured from 240 to 295 K utilizing the techniques of laser/flash photolysis-resonance fluorescence. The HCl concentrations were monitored continuously by ultraviloet and infrared spectrophotometry. The results can be fit to the following Arrhenius expression: \documentclass{article}\pagestyle{empty}\begin{document}$$k_1 = (4.6{\rm } \pm {\rm }0.3){\rm } \times {\rm }10^{ - 12} \exp [- (500{\rm } \pm {\rm }60)/T{\rm cm}^3 /{\rm molecule} \cdot {\rm s}$$\end{document} The rate constant values obtained in this study are 20-30% larger than those recommended previously for modeling of stratospheric chemistry.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/kin.550160910
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