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  • Inorganic Chemistry  (69)
  • Life and Medical Sciences  (49)
  • Physical Chemistry  (24)
  • Wiley-Blackwell  (142)
  • Annual Reviews
  • Oxford University Press
  • Springer
  • 1980-1984
  • 1975-1979  (142)
  • 1950-1954
  • 1978  (79)
  • 1976  (63)
Collection
Keywords
Publisher
  • Wiley-Blackwell  (142)
  • Annual Reviews
  • Oxford University Press
  • Springer
Years
  • 1980-1984
  • 1975-1979  (142)
  • 1950-1954
Year
  • 1
    Electronic Resource
    Electronic Resource
    Transforming viruses directly reduce the cellular growth requirement for a platelet derived growth factor (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 97 (1978), S. 371-380 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Early passage mouse embryo fibroblasts, mouse 3T3 cell lines, and early passage diploid human fibroblasts grew to higher cell densities in tissue culture medium supplemented with serum than in medium supplemented with defibrinogenated platelet-poor plasma (PPP). Unlike the mouse cells, the human fibroblasts displayed this differential growth response only in the presence of hypophysiologic concentrations of calcium. The addition of heat-treated extracts of human platelets to PPP-supplemented medium stimulated the replication of both the normal mouse cells and early passage human embryo fibroblasts.Human or mouse fibroblasts transformed by either retroviruses or by SV40, including SV40 infected “serum revertants” and “flat transformants,” grew to equal cell densities in medium supplemented with either serum or PPP. Infection of Balb/c-3T3 cells with SV40 rapidly induced them to grow in PPP-supplemented medium demonstrating that the ability of SV40-transformed cell lines to proliferate in PPP-supplemented medium does not arise from the cell culture selection procedures usually employed to obtain stable virus-transformed cell lines. 3T3 cells infected but not transformed by retroviruses do not replicate in PPP-supplemented medium demonstrating that reduction of the growth requirement for the platelet growth factor(s) by retroviruses is a transformation-specific response. Cell cultures that did not proliferate well in PPP-supplemented medium did not form tumors when inoculated into athymic nude mice. Many, although not all, of the lines which grew well in PPP medium were tumorigenic in nude mice. Together, these findings indicate that: (1) normal fibroblast-like cells display a growth requirement for factor(s) present in serum but not found in PPP; (2) this serum specific growth factor is derived from platelets; (3) a primary response to viral transforming genes is a reduction in the growth requirement for these platelet-derived factors; and (4) cells that have a reduced requirement for the platelet-derived growth factor are often tumorigenic.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1040970312
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  • 2
    Electronic Resource
    Electronic Resource
    The kinetics of aquation and racemization of some cis- chloro-, hydroxo-, and aquabis(ethylenediamine)(amine)cobalt(III) complexes (1976)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 8 (1976), S. 573-583 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aquation rates forcis-CoCl(en)2(A)2+ (A = 3,5-lutidine, imidazole, N-methylimidazole, benzimidazole) have been determined by halide release titration in 1.0 M HNO3 at 50-80°C. Kinetic parameters are (in the above order of A) 107k298 (sec-1), 7.4, 5.7, 1.3, 9.7; Ea (kJ/mole), 103, 101, 130, 112; log PZ (sec-1), 11.89, 11.53, 16.04, 13.58; ΔS298
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550080411
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  • 3
    Electronic Resource
    Electronic Resource
    A shock-tube study of the kinetics of reaction of hydroxyl radicals with H2, CO, CH4, CF3H, C2H4, and C2H6 (1976)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 8 (1976), S. 549-561 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Concentration-time profiles have been measured for hydroxyl radicals generated by the shock-tube decomposition of hydrogen peroxide in the presence of a variety of additives. At temperatures close to 1300°K the rate constants for the reaction \documentclass{article}\pagestyle{empty}\begin{document}$${\rm OH} + {\rm RH} \to {\rm R} + {\rm H}_{\rm 2} {\rm O}$$\end{document} are found to be in the ratio 0.18:0.19:0.59:1.00:2.33:2.88 for the additives CO:CF3H:H2:CH4:C2H4:C2H6, respectively.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550080409
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  • 4
    Electronic Resource
    Electronic Resource
    A kinetics study of the reactions of OH with several aromatic and olefinic compounds (1978)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 10 (1978), S. 783-804 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reactions of hydroxyl radicals with eight substituted aromatic hydrocarbons and four olefins were studied utilizing the flash photolysis-resonance fluorescence technique. The rate constants were measured at 298°K using either Ar or He as the diluent gas. The values of the rate constants (k × 1012) in the units of cm3/molec. sec are (a) OH + o-xylene → products: (12.9±3.8), 20 torr He; (13.0±0.3), 20 torr Ar; (12.4±0.1), 200 torr He;(b) OH + m-xylene → products: (15.6±1.4), 3 torr Ar; (19.4±0.8), 20 torr Ar; (21.4±0.2), 20 torr He; (20.3±1.9), 200 torr Ar; (20.6±1.3), 200 Torr He;(c) OH + p-xylene → products: (8.8±1.2), 3 torr Ar; (10.1±1.0), 20 torr He; (10.5±0.6), 200 torr He;(d) OH + ethyl benzene → products: (7.50±0.38), 3 torr He; (7.06±0.26), 20 torr He; (7.95±0.28), 200 torr He;(e) OH + n-propylbenzene → products: (6.40±0.36), 20 torr He; (5.86±0.16), 200 torr He;(f) OH + isopropylbenzene → products: (7.79±0.40), 200 torr He;(g) OH + hexafluorobenzene → products: (0.221±0.020), 20 torr He; (0.219±0.016) 200 torr He;(h) OH + n-propyl pentafluorobenzene → products: (2.52±0.54), 3 torr He; (3.01±0.76), 20 torr He; (3.06±0.24), 200 torr He;(i) OH + propylene → products: (25.6±1.2), 20 torr He; (26.3±1.2), 200 torr He;(j) OH + 1-butene → products: (29.6±1.9), 3 torr He; (29.4±1.4), 20 torr He;(k) OH + cis-2-butene → products: (43.2±4.1), 3 torr He; (42.6±2.5), 20 torr He;(l) OH + tetramethylethylene → products: (56.9±1.3), 20 torr He.
    Additional Material: 15 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550100802
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Hydrate des Na2PHO3, Phasenbeziehungen und kristallographische Untersuchungen (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 439 (1978), S. 265-274 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Hydrates of Na2PHO3, Phase Relations and Crystallographic InvestigationsDehydration of Na2PHO3,5 H2O to the respective anhydrous salt was investigated by thermogravimetry and differential thermal analysis. In the course of dehydration an intermediate lower hydrate is formed, Na2PHO3,0.5 H2O. Single crystals of this phase were grown from solution. Na2PHO3,0.5 H2O is rhombohedral, space group R32, R3m or R3m, with a = 18.918(5) Å and α = 33.00(2)°. - The crystal structure of Na2PHO3,5 H2O was redetermined. The pentahydrate is orthorhomic, space group Pnm21, with a = 7.190(1), b = 6.447(1), c = 9.230(2) Å. The structure consists of layers of Na-coordinating polyhedra which share edges and vertices. The layers are connected to a threedimensional structure by hydrogen bonds of the water molecules.
    Notes: Die Dehydratisierung von NaaPHO3 · 5 H2O zum wasserfreien Salz wurde mit Thermogravimetrie und Differentialthermoanalyse untersucht. Die Entwässerung verläuft über die Stufe eines intermediären niederen Hydrates, Na2PHO3 · 0,5 H2O. Einkristalle des Hemihydrates konnten aus Lösung gezüchtet werden; es kristallisiert rhomboedrisch, Raumgruppe R32, R3m oder R3m, mit a = 18,918(5) ß und α = 33,00(2)°. - Die Kristallstruktur von Na2PHO3 · 5 H2O wurde neu bestimmt. Das Pentahydrat kristallisiert orthorhombisch, Raumgruppe Pnm21 mit a = 7,109(1), b = 6,447(1), c = 9,230(2) Å. Die Struktur ist aus Schichten von kanten- und eckenverknüpften Na-Koordinationspolyedern aufgebaut. Die Schichten werden durch Wasserstoffbrückenbindungen der Wassermoleküle zu einem dreidimensionalen Strukturverband verknüpft.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784390132
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  • 6
    Electronic Resource
    Electronic Resource
    Kinetics of the thermal decomposition of trans-1,2-dicyanocyclobutane (1978)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 10 (1978), S. 453-459 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The kinetics of the thermal decomposition of trans-1,2-dicyanocyclobutane, which yields only vinyl cyanide, have been studied in the temperature range of 570°-660°K using a stirred-flow reactor. The reaction was found to be first order and homogeneous with rate constants represented by the Arrhenius equation \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm log}k{\rm (sec}^{- 1} {\rm) =}{{{\rm (16}{\rm .0} \pm {\rm 0}{\rm .3)} - {\rm (52}{\rm .9} \pm {\rm 0}{\rm .8)}} \mathord{\left/ {\vphantom {{{\rm (16}{\rm .0} \pm {\rm 0}{\rm .3)} - {\rm (52}{\rm .9} \pm {\rm 0}{\rm .8)}} \theta}} \right. \kern-\nulldelimiterspace} \theta} $$\end{document} where θ = 2.303 RT kcal/mol. The Arrhenius parameters are considerably higher than previously reported. On the assumption of a biradical mechanism the results are consistent with a cyano stabilization energy of ∼5 kcal/mol, in good agreement with the results of recent studies of related systems.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550100504
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  • 7
    Electronic Resource
    Electronic Resource
    Synthese von 6-Fluorbenz[a]anthracen-Derivaten (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 1038-1045 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of 6-Fluorobenz[a]anthracene Derivatives6-Fluoro-(12 and 6-Fluoro-12-methylbenz[a]anthracene(11) are prepared in several steps starting with 2-bromo-3-fluoronaphthalene (1). 6-Fluorobenz[a]anthracen-127H)-one (8) predominantly occurs in the enol form 9. Efforts to synthesize 6-fluoro-7,12-dimethylbenz[a]anthracene (10) are described.
    Notes: Ausgehend von 2-Brom-3-fluornapthalin (1) werden über mehrere Stufen 6-Fluor-(12) und 6-Fluor-12-methylbenz[a]anthracen (11) dargestellt. 6-Fluorbenz[a]anthracen-12(7 H)-on (8) liegt vorwiegend in der Enolform 9 vor. Syntheseversuche für 6-Fluor-7,12-dimethylbenz[a]anthracen (10) werden beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090324
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  • 8
    Electronic Resource
    Electronic Resource
    Metall-Komplexe mit Tetrapyrrol-Liganden, XVI: Methoxonitrosyl(octaäthylporphinato)osmium (II) und verwandte Osmiumkomplexe des Octaäthylporphins (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 1465-1476 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metal Complexes of Tetrapyrrole Ligands, XVI: Methoxonitrosyl(octaethylporphinato)osmium(II)and related Osmium Complexes of OctaethylporphineThe new diamagnetic nitrosyl(octaethylporphinato)osmium (II) derivatives Os(OÄP)NO· L′(2c-e; L′ = NO, OMe, or F)2 are prepared and characterized spectroscopically. According to the electronic absorption, i.r., and 1H n.m.r. spectra fo the bis(methoxo)osmium(IV) derivative Os(OÄP)(OMe)2 (2f) and of the nitrosyls 2d, e, the latter contain OsII with an linear N≡O⊕ group and an anion OMe⊖ or F⊖ in the trans position. The strong π-acceptor NO⊕ and the strong π-donator OMe⊖ (or F⊖) effect a push-pull stabilization of the system. The dinitrosyl 2c probably shows the rare trans-array of linear M — N ≡ O⊕ and an bent M — N = O⊖ unit. The porphine ligand acts as a probe of the π-acceptor capacity of the axial ligands; in the series Py 〈 N2 〈 CO 〈 NO⊕ an increasing bathochromic shift of the α-band in the spectral region from 510 to 580 nm obtains.
    Notes: Neue, diamagnetische Nitrosyl(octaäthylporphinato)osmium(II)-Derivate OS(OÄP)NO· L′(2c bis e; L′ = NO, OMe oder F)2 werden dargestellt und spektroskopisch charakterisiert. Nach einem Vergleich der Elektronenanregungs-, IR- und 1H-NMR-Spektren des Bis(methoxo)osmium(IV) Derivats Os(OÄP)(OMe)2 (2f) und der Nitrosyl 2d, e liegt in der letzteren Os11 mit linearer N ≡ O⊕-Gruppierung und trans-ständigem Anion OMe⊖ oder F⊖ vor. Der starke π-Acceptor NO⊕ und der starke π-Donator OMe⊖ (oder F⊖) bewirken eine „push-pull“ -Stabilisierung des Systems. Im Dinitrosyl 2c light wahrscheinlich die seltene trans-Anordnung einer Linearen M—N≡O⊕- und einer gewinkelten M—N=O⊖-Einheit vor. Der Porphin-Ligand wirkt als Sonde für die π-Acceptorstärke der axialen Liganden; in der Reihe Py 〈 N2 〈 CO 〈 NO⊕ erfolgt eine zunehmend bathochrome Verschiebung der α-Bande im Spektralbereich von 510 bis 580 nm.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090432
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  • 9
    Electronic Resource
    Electronic Resource
    Über das Auftreten von Dichlorketocarben bei der radikalisch induzierten Fragmentierung von Dichlorvinylencarbonat (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 1163-1170 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Evidence of Dichloroketocarbene in the Radically Induced Fragmentation of Dichlorovinylene CarbonatContrary to the thermal fragmentation of dichlorovinylene carbonate (1) the attack of sulfur radicals on 1 yields dichloromaleic acid dichloride (3), carbon dioxide, carbon oxisulfide and small amounts of dichloromaleic acid thioanhydride (6). The contested structure of 3 is confirmed by 35Cl-NQR-measurements. - Based on product formation the fragmentation very likely proceeds via dichloroketocarbene as an intermediate.
    Notes: Anders als bei rein thermischer Spaltung 2) fragmentiert Dichlorvinylencarbonat (1) beim Angriff von Schwefelradikalen zu Dichlormaleinsäuredichlorid (3), Kohlendioxid, Kohlenoxisulfid und geringen Mengen Dichlormaleinsäurethioanhydrid (6). Die bisher umstrittene Konstitution von 3 wird durch 35Cl-NQR-Messungen sichergestellt. - Der aus der Produktanalyse sich abbildende Fragmentierungsmechanismus macht das intermediäre Auftreten des Dichlorketocarbens wahrscheinlich.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090338
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  • 10
    Electronic Resource
    Electronic Resource
    Studies on the mid-gut of the desert locust Schistocerca gregaria. II. Ultrastructure of the muscle coat and its innervation (1978)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 156 (1978), S. 257-278 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The fine structure of the mid-gut musculature of the desert locust, Schistocerca gregaria is described and compared with that of the visceral muscles of other species. The gross morphology and fine structure of the nervous system which supplies the mid-gut muscle fibres is described.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051560208
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