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  • ASTROPHYSICS  (138)
  • Life and Medical Sciences  (91)
  • Inorganic Chemistry  (80)
  • Lunar and Planetary Science and Exploration
  • MATERIALS, METALLIC
  • 2010-2014
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  • 1975-1979  (178)
  • 1970-1974  (99)
  • 1950-1954  (21)
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  • 1979  (178)
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  • 1953  (21)
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  • 2010-2014
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  • 1975-1979  (178)
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  • 1
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    Stellar model chromospheres. XI - A survey of Ca II lambda 8542 line profiles in late-type stars of differing chromospheric activity (1979)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-27
    Schlagwort(e): ASTROPHYSICS
    Materialart: PB80-144215 , Astrophysical Journal Supplement Series; 41; Nov. 197
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 2
    Digitale Medien
    Digitale Medien
    Darstellung und Molekülstruktur eines Metallclusters mit Cubanstruktur, [η5-C5H5Mo(CO)3HgMo] 4 (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 2413-2418 
    Details
    ISSN: 0009-2940
    Schlagwort(e): Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Synthesis and Molecular Structure of a Metal Cluster with Cubane Structure, [η5-C5H5Mo(CO)3HgMo]4(4)The compound [η5-C5H5Mo(CO)3HgMo]4 has been isolated as an additional product of the reaction between [η5-C5H5Mo(CO)3]2, 2-butenyl chloride, and sodium amalgam. The X-ray structure (R = 0·050) analysis of this novel species revealed that the compound has a slightly distorted cubane structure, for the first time the cubane unit being built up by two different metal atoms (Mo and Hg).
    Notizen: Die Verbindung [η5-C5H5Mo(CO)3HgMo]4 (4) wurde als weiteres Produkt der Reaktion zwischen [η5-C5H5Mo(CO)3]2, 2-Butenylchlorid und Natriumamalgam isoliert. Die Röntgenstrukturanalyse dieser neuartigen Spezies zeigt eine leicht verzerrte Cubanstruktur, bei der das Cubangerüst erstmals aus zwei verschiedenen Metallatomen (Mo und Hg) aufgebaut ist. Der R-Wert beträgt 0·050.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/cber.19791120708
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Glycolytic enzyme activity in developing red and white muscle (1974)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 83 (1974), S. 251-257 
    Details
    ISSN: 0021-9541
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Notizen: The activities of the constant proportion enzymes of the Embden-Meyerhof chain (triose phosphate isomerase (TIM), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), phosphoglycerate kinase (PGK), phosphoglycerate mutase (PGM) and enolase (ENOL)), and the activity of lactic dehydrogenase (LDH) were studied in developing red (trapezius) and white (longissimus) muscles of the pig from a fetal stage to 24 weeks postnatal. Both muscles were differentiated by two weeks postnatal in the sense that they had reached the adult level of enzyme activity. Enzyme activities were two- to three-fold greater in the longissimus than in the trapezius. Enzyme activity ratios based on GAPDH were not consistent in the fetal and day 1 samples but were consistent during later stages of growth. Ratios of enzyme activity based on activity at 105 days gestation revealed that TIM, PGK and PGM are grouped and follow the same pattern, but GAPDH and ENOL are quite different from each other and from the pattern shown by TIM, PGK and PGM. The constant proportion concept in developing muscle is therefore questioned.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcp.1040830211
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    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    The effect of hexose on chloramphenicol sensitivity and resistance in chinese hamster cells (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 98 (1979), S. 627-635 
    Details
    ISSN: 0021-9541
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Notizen: The toxicity and extent of growth inhibition produced by chloramphenicol (CAP) in CAPs Chinese hamster cells (line V79-5) was found to be dependent on the type and concentration of hexose in the medium. In high levels of glucose (6.5 mM), cultures of CAPs cells underwent 7-8 population doublings in the presence of 100 μg/ml CAP and viability then dropped rapidly. In contrast, lower concentrations of glucose (1.0 mM) permitted only limited growth (2-3 doublings) in the presence of 100 μg/ml CAP, but the cells remained viable and apparently quiescent for prolonged periods of time. The growth potential of V79-5 cells in CAP appeared specifically dependent on glucose, as mannose and galactose could not substitute for glucose. The toxicity of CAP to these cells seemed to be determined primarily by the number of cell doublings in the presence of the drug.A CAPR derivative of V79-5, designated 5-3, was analyzed in order to determine whether the requirement for glucose for cell growth in the presence of CAP also occurred in cells that were isolated as resistant to the drug. In order to rigorously control the hexose in the medium, some experiments were performed with medium containing dialysed, instead of whole, fetal calf serum. It was seen that the growth of the CAPR line in the presence (but not the absence) of 100 μg/ml CAP was dependent on glucose in the medium. Thus, resistance to CAP in these cells appears to be a conditional state, dependent on glucose for expression. Furthermore, the glucose auxotrophy of these cells in the presence of CAP suggests that CAP is still affecting some activities in cells isolated as CAPR.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcp.1040980321
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Cell cycle dependent modulations of the surface membrane of normal and SV40 virus transformed 3T3 cells (1974)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 84 (1974), S. 343-348 
    Details
    ISSN: 0021-9541
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Notizen: Agglutinability with Concanavalin was studied as function of cell cycle transition in normal and SV40 virus transformed 3T3 cells. In synchronized cultures of normal cells, agglutinbility was high during mitosis and disappeared rapidly. Agglutinability of transformed cells remained high in G1 phase but diminished gradually upon entering S phase and reached minimum in G1 phase. Decreased agglutinability a the end of the cell cycle was also observed in synchronous SV3T3 cultures by a combined technique of haemadsorption and density gradient centrifugation. In normal 3T3 cells, similar variations in agglutin ability during interphase could not be observed.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcp.1040840303
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    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    Effects of Bonellin on fertilization and cleavage of the eggs of the sea urchin, sphaerechinus granularis (1979)
    New York, NY : Wiley-Blackwell
    Gamete Research 2 (1979), S. 247-258 
    Details
    ISSN: 0148-7280
    Schlagwort(e): Bonellin ; Bonellia viridis ; Sphaerechinus granularis ; fertilization ; Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie
    Notizen: We have studied the structural changes occurring in the eggs of the sea urchin Sphaerechinus granularis treated with bonellin, the green pigment of the sea worm Bonellia viridis, which is responsible for the masculinization of the larva of this animal. The two major targets of bonellin appear to be the cortical structures and the nuclear membrane, while the mitochondria do not appear to be affected. As a result of bonellin treatment, cleavage is prevented while nuclear divisions proceed. The possibility is discussed that the alteration of the cortical structures may interfere with the assembly of the surface microfilaments and hence with the formation of the cleavage furrows.
    Zusätzliches Material: 9 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/mrd.1120020308
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  • 7
    Digitale Medien
    Digitale Medien
    The normal membrane resting potential of mammalian skeletal muscle measured in vivo (1953)
    Philadelphia : Wiley-Blackwell
    Journal of Cellular and Comparative Physiology 42 (1953), S. 343-357 
    Details
    ISSN: 0095-9898
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcp.1030420303
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    Artikel (Nationallizenzen)
    Volltext
  • 8
    Digitale Medien
    Digitale Medien
    Tissue microenvironment and the genetic control of hair pigment patterns in mice (1979)
    Chichester [u.a.] : Wiley-Blackwell
    Developmental Genetics 1 (1979), S. 167-179 
    Details
    ISSN: 0192-253X
    Schlagwort(e): agouti locus ; hair pigment patterns ; melanocyte metabolism ; tissue microenvironment ; eumelanin ; phaeomelanin ; Life and Medical Sciences ; Genetics
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie
    Notizen: This study was conducted to assess microenvironmental variability within integumental tissue of genetically identical mice with respect to a specific cellular response: cyclic synthesis of yellow and black pigment by hair bulb melanocytes. Crosses were performed within and between inbred strains of mice that were isogenic with the exception of a single gene substitution at the agouti locus. Agouti locus genes included the Avy, Aw, A, atd, at, ax, am, and a alleles. The pigment patterns of dorsal, flank, and ventral hairs of the first and third hair generations and of hairs growing in special integumentary areas such as the pinna, tail, and hind foot were studied. It was found that the amount of yellow pigment synthesized by hair bulb melanocytes within genetically identical mice is both agedependent and conditioned by the integumentary environment. Furthermore, the special integumentary regions produce hairs with a variety of pigment patterns in which the distribution and relative amounts of black and yellow pigments do not necessarily conform to dominance relationships expected among agouti locus alleles as judged by their effects on the pigmentation of the dorsal pelage. We conclude that within genetically uniform integumental tissues, microenvironmental differences occur and are reflected as alterations in the metabolic pattern of differentiated cells.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/dvg.1020010205
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  • 9
    Digitale Medien
    Digitale Medien
    Mutations specific to spore maturation in the asexual fruiting body of dicytostelium discoideum (1979)
    Chichester [u.a.] : Wiley-Blackwell
    Developmental Genetics 1 (1979), S. 355-362 
    Details
    ISSN: 0192-253X
    Schlagwort(e): Dictyostelium discoideum ; spore maturation ; spore specific mutations ; cell patterning ; Life and Medical Sciences ; Genetics
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie
    Notizen: Three mutations affecting spore maturation in the asexual fruiting body of Dictyostelium discoideum are assigned to a new locus, sprJ, on linkage group IV. Strains carrying mutations at the sprJ locus do not form mature spores, yet the cell patterning (spore, stalk and disc cell ratios) is apparently normal. These mutations will be useful to delineate branch points between the cell patterning and spore maturation pathways. There are some unusual features of the sprJ-containing mutants. In particular each of the parent strains of the three mutants has incomplete spore maturation as determined by colony-forming ability after heat shocking at 45°C. A mutation allowing growth in the presence of benlate (600 μg/ml), benA351, is mapped to linkage group I.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/dvg.1020010408
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    Volltext
  • 10
    Digitale Medien
    Digitale Medien
    Reactions between Triethyl Phosphate and Metal HalidesVorbericht: Z. anorg. allg. Chem. 401, 313 (1973). Part of this work appeared in the Proceedings of the XIVth International Conference on Coordination Chemistry, pp. 283-285, Toronto Canada, June 22-28, 1972; abstracted from the Ph. D. thesis of C. M. Mikulski, Drexel University, Department of Chemistry, 1972. (1974)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 403 (1974), S. 200-210 
    Details
    ISSN: 0044-2313
    Schlagwort(e): Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Reaktionen von Triäthylphosphat mit MetallhalogenidenTriäthylphosphat reagiert mit M(I), M(II) oder M(III) Halogeniden bei 100-250°C unter Bildung folgender Komplexe: M[OOP(OC2H5)2]3, (M = Al, Ga, In, Sc, Y, Dy, Ti, V, Cr, Fe); M[OOP(OC2H5)2]2, (M = Fe, Cu); VO[OOP(OC2H5)2]2; Li[OOP(OC2H5)2]; M2[OOP(OC2H5)2]2 [OOP(OC2H5)—O—P(OC2H5)OO], (M = Mn, Co, Ni); und M3HP2O7 (M = Rb, Cs). Diese Komplexe wurden mittels Infrarot- und Elektronen-Spektren und magnetischer Messungen charakterisiert.
    Notizen: Triethyl phosphate reacts with M(I), M(II) or M(III) halides at 100-250°C with formation of the following complexes: M[OOP(OC2H5)2]3, (M = Al, Ga, In, Sc, Y, Dy, Ti, V, Cr, Fe); M[OOP(OC2H5)2]2, (M = Fe, Cu); VO[OOP(OC2H5)2]2; Li[OOP(OC2H5)2]; M2[OOP(OC2H5)2]2 [OOP(OC2H5)—O—P(OC2H5)OO], (M = Mn, Co, Ni); and M3HP2O7 (M = Rb, Cs). These complexes were characterized by means of their infrared and electronic spectra and magnetic susceptibilities.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/zaac.19744030216
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