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  • Chemical Engineering  (450)
  • Analytical Chemistry and Spectroscopy  (448)
  • Cell & Developmental Biology  (377)
  • Aerodynamics
  • GENERAL
  • Inorganic Chemistry
  • 1980-1984  (1,232)
  • 1955-1959  (181)
  • 1950-1954  (91)
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  • 1
    Electronic Resource
    Electronic Resource
    Intracellular concentration of elements in normal and dystrophic skeletal muscles of the chicken (1980)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 103 (1980), S. 193-200 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: In this study, the intracellular concentrations of six elements (mmole/kg dry weight) were directly measured in the muscle fibers of pectoralis major muscles of eight week old, genetically dystrophic and normal chickens by the X-ray microanalysis technique. The extent of muscle degeneration was evaluated by morphometric measurements of muscle fiber diameter and other histological changes. A significant increase in the concentration of intracellular sodium and chlorine was evident in dystrophic muscles. The concentration of intracellular sodium was 127.0 ± 35.0 in the muscle fibers of dystrophic chicks compared to 65.7 ± 16.5 in normal controls. The concentration of chlorine was 90.5 ± 27.5 and 54.1 ± 5.5 in the muscle fibers of dystrophic and normal chicks respectively. The intracellular concentrations of potassium, magnesium, phosphorous, and sulfur remained unchanged in the dystrophic condition. Morphometric studies revealed that the dystrophic pectoralis muscles contain fewer but thicker fibers per unit area compared to normal pectoralis muscles. The importance of these findings are discussed in relation to the results of earlier investigations.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041030204
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  • 2
    Electronic Resource
    Electronic Resource
    Sealing technique for static coating of large bore capillary columns (1981)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 4 (1981), S. 588-588 
    Details
    ISSN: 0935-6304
    Keywords: Capillary columns ; End sealing ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240041113
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  • 3
    Electronic Resource
    Electronic Resource
    Evidence that myosin light chain phosphorylation regulates contraction in the body wall muscles of the sea cucumber (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 112 (1982), S. 307-315 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The Ca2+ activation mechanism of the longitudinal body wall muscles of Parastichopus californicus (sea cucumber) was studied using skinned muscle fiber bundles. Reversible phosphorylation of the myosin light chains correlated with Ca2+-activated tension and relaxation. Pretreatment of the skinned fibers with ATPγS and high Ca2+ (10-5M) resulted in irreversible thiophosphorylation of the myosin light chains and activation of a Ca2+ insensitive tension. In contrast, pretreatment with low Ca2+ (10-8M) and ATPγS results in no thiophosphorylation of the myosin light chains or irreversible activation of tension. These results are consistent with a Ca2+-sensitive myosin light chain kinase/phosphatase system being responsible for the activation of the muscle. Other agents known to have an effect upon the Ca2+-activated tension in skinned vertebrate smooth muscle fibers (trifluoperazine, catalytic subunit of the cyclic AMP-dependent protein kinase, and calmodulin) did not have an effect on myosin light chain phosphorylation or Ca2+-activated tension. These results suggest a different type of myosin light chain kinase than is found in vertebrate smooth muscle is responsible for the activation of parastichopus longitudinal body wall muscle.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041120302
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  • 4
    Electronic Resource
    Electronic Resource
    Das Schwingungsspektrum von α-Te2MoO7 und ein Vorschlag zur Struktur der Telluromolybdate zweiwertiger Kationen (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 476 (1981), S. 214-220 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Vibrational Spectrum of α-Te2MoO7 and a Proposal for the Structure of Telluromolybdates of Divalent CationsInfrared and Raman spectra of α-Te2MoO7 have been recorded and discussed in relation to their known crystalline structure. The comparison of these spectra with those of telluromolybdates of the type MIITeMoO6, allows us to propose a structural model for these phases, which is totally consistent with the spectroscopic findings.
    Notes: Die IR- und Raman-Spektren von α-Te2MoO7 wurden aufgenommen und an Hand der bekannten kristallographischen Daten zugeordnet. Durch Vergleich dieser Spektren mit demjenigen einiger Telluromolybdate des Typs MIITeMoO6 kann für diese Phasen ein Strukturvorschlag gegeben werden, der sich durch die spektroskopischen Daten einwandfrei rechtfertigen läßt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814760525
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  • 5
    Electronic Resource
    Electronic Resource
    Morphological and ultrastructural characterization of mammalian spermatozoa processed for flow cytometric DNA analyses (1984)
    New York, NY : Wiley-Blackwell
    Gamete Research 10 (1984), S. 339-351 
    Details
    ISSN: 0148-7280
    Keywords: spermatozoa ; flow cytometry ; DNA staining ; nuclear morphology ; ultrastructure ; mammals ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The morphological and ultrastructural changes that occur during preparation of porcine, bovine, and murine spermatozoa for flow cytometric quantification of the relative DNA content of the X- and Y-chromosome-bearing sperm populations were examined. Ejaculated spermatozoa from the boar and bull were washed using a series of dimethyl sulfoxide (DMSO) solutions prior to fixation, whereas the epididymal mouse spermatozoa were washed only in phosphate-buffered saline (PBS). Spermatozoa from all three species were then fixed in ethanol and processed for fluorochrome staining by a treatment regimen consisting of sulfhydryl reduction and proteolysis. The processed sperm nuclei were stained for DNA with the fluorochrome, 4′-6-diamidino-2-phenylindole (DAPI) before quantification by flow cytometry. Scanning and transmission electron micrographs of sperm heads taken at various steps of the preparation and staining procedures show 1) that the rigorous washing procedure disrupted the plasma and outer acrosomal membranes, 2) that ethanol fixation resulted in removal of the outer membranes and disintegration of the nuclear envelope, and 3) that thiol and proteolysis treatment removed the remaining cellular organelles including the tail and rapidly induced partial decondensation of the tightly packed chromatin. Sequential micrographs showed that the nuclear matrix of all three species increased in thickness about twofold during the preparation and staining. Consequently, the harsh procedures currently used for quantitative staining of DNA for high-resolution flow cytometric analyses destroy most cellular organelles and thereby prevent simultaneous characterization of DNA content and other sperm cell constituents.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1120100402
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  • 6
    Electronic Resource
    Electronic Resource
    Applications of Fourier transform mass spectrometry (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 389-415 
    Details
    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mas.1280020303
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  • 7
    Electronic Resource
    Electronic Resource
    Doubly charged ion mass spectra: III - N-alkanes (1982)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 17 (1982), S. 10-18 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Doubly charged ion mass spectra have been obtained for 15 n-alkane hydrocarbons. Spectra were measured using a Nier-Johnson geometry Hitachi RMU-7L mass spectrometer operated at 1.6kV accelerating voltage. Fragment ions, which resulted from C—C bond rupture and extensive H loss, dominated the spectra. Molecular ions have not been observed. The most intense ions in the doubly charged ion mass spectra of n-alkanes were [C2H4]2+, [C3H2]2+, [C4H3]2+, [C5H2]2+, [C6H6]2+, [C6H8]2+, [C7H6]2+, [C7H8]2+, [C8H6]2+ and [C8H8]2+. Appearance energies for forming the prominent doubly charged fragment ions have been measured and range from 27.5 eV to energies greater than 60eV. A geometry optimized SCF approach has been used to compute the energies and structures of prominent ions in the doubly charged mass spectra.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210170103
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  • 8
    Electronic Resource
    Electronic Resource
    Characterization of underived nucleotides by mass spectrometry using the MBSA-FAB ionization method (1983)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 18 (1983), S. 361-364 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210180812
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  • 9
    Electronic Resource
    Electronic Resource
    Analyse Vibrationnelle et Structurale en Série Aliphatique Saturée 4Pour l'article 3 dans cette série voir J. L. Delarbre, L. Maury et L. Bardet, J. Raman Spectrosc. 11, 288 (1981). - Spectres de Vibration de I'Acide Diméthylmalonique et de ses Sels Alcalins en Solution Aqueuse (1982)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 13 (1982), S. 1-8 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Vibrational spectra (Raman and infrared) of dimethylmalonic acid and its potassium salts in aqueous solutions (H2O and D2O) were recorded from 250 to 4000 cm-1. The analysis of the polarization of the Raman lines led us to conclude that dimethylmalonic acid and dipotassium salt belong to C2 while the acid salt belongs to the Cs group, the symmetry plane bisecting the COO- group. An assignment of the observed lines as fundamentals is proposed.
    Notes: Les spectres de vibration (Raman et infrarouge) de l'acide dimétyhlmalonique et de ses sels alcalins en solution aqueuse (H2O et D2O) ont été anregistrés de 250 à 4000 cm-1. L' ananlyse de l'état de polaristion des raies Raman observées permet de conclure que l'acide diméthylmalonique et le sel neutre appartiennent au groupe C2 tandis que le sel acide répond au groupoe Cs, le plan de symétrie étant bissectrur du groupe COO-. Une attribution des raies observées aux vibrations fondamentales est proposée.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250130102
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  • 10
    Electronic Resource
    Electronic Resource
    Analyse Vibrationnelle et Structurale en Série Aliphatique Saturée: 5For Part 4 of this series, see Ref. 4. - Spectres de Vibration de l'Acide Ethylmalonique et de ses Sels Alcalins en Solution Aqueuse (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 426-433 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Raman and infrared spectra of ethylmalonic acid [C2H5CH(COOH)2, C2H5CD(COOD)2] and its potassium salts [C2H5CH(COOH)(COOK), C2H5CD(COOD)(COOK) and C2H5CH(COOK)2, C2H5CD(COOK)2] in aqueous solution were recorded from 3500 to 200 cm-1. The analysis of the polarization of the Raman lines led us to the conclusion that ethylmalonic acid and its dipotassium salt belong to Cs and the acid salt to the C1 group. An assignment of the observed lines as fundamentals is proposed.
    Notes: Les spectres Raman et infrarouge de l'acide éthylmalonique [C2H5CH(COOH)2, C2H5CD(COOD)2] et de ses sels alcalins [C2H5CH(COOH)(COOK), C2H5CD(COOD)(COOK) et C2H5CH(COOK)2, C2H5CD(COOK)2] en solution aqueuse ont été enregistrés de 3500 à 200 cm-1. L'analyse du facteur de dépolarisation nous a permis de conclure que l'acide et le dianion appartiennent au groupe de symétrie Cs le sel acide appartenant au groupe C1. Une attribution des vibrations fondamentales est proposée.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250140612
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