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  • 1
    Electronic Resource
    Electronic Resource
    Thermoelectric power and conductivity of iodine-doped "new'' polyacetylene (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 95 (1991), S. 1270-1275 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We report measurements of the thermoelectric power and conductivity of "new'' polyacetylene doped with iodine. In highly doped samples in which the conductivity extrapolates to finite values at zero temperature, we observe a nonlinearity in the thermopower very similar to that characteristic of the electron–phonon effect in metallic diffusion thermopower. The size of this nonlinearity is unusually small in the most highly conducting samples, as expected when the intrinsic conductivity is very large. For samples with additional sp3 defects or lower doping levels, in which the conductivity follows variable-range hopping behavior, we also find evidence for a hopping contribution in the thermopower.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.461107
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  • 2
    Electronic Resource
    Electronic Resource
    Thermopower behavior for the shape memory alloy NiTi (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 6223-6227 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report thermopower measurements for the nickel titanium shape memory alloy Ni0.507Ti0.493. Our measurements reveal abrupt changes in the temperature dependence of thermopower, which correlate well with the structural phase transition between the austenitic and martensitic phases. These transition effects in thermopower are more clearly defined than in the resistivity, which is also reported. In the martensitic phase, thermopower exhibits standard metallic diffusion behavior with a nonlinearity, which is consistent with either a small peak in the density of states just below the Fermi level, as calculated by Kulkova, Egorushkin, and Kalchikhin [Solid State Commun. 77, 667 (1991)], or else electron–phonon mass enhancement. For thermally or mechanically treated samples, the magnitude of the transition effects in thermopower are reduced. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1368396
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  • 3
    Electronic Resource
    Electronic Resource
    Role of the entC gene in enterobactin and menaquinone biosynthesis in Escherichia coli
    Amsterdam : Elsevier
    Archives of Biochemistry and Biophysics 276 (1990), S. 331-335 
    Details
    ISSN: 0003-9861
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0003-9861(90)90728-H
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  • 4
    Electronic Resource
    Electronic Resource
    Katalytische hydrodimerisierung von acrylnitril mit rutheniumkomplexen bei mittleren drucken
    Amsterdam : Elsevier
    Journal of Organometallic Chemistry 114 (1976), S. 273-279 
    Details
    ISSN: 0022-328X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0022-328X(00)87284-8
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  • 5
    Electronic Resource
    Electronic Resource
    The ontogeny of homeothermic regulation in post-hatching chicks: Its influence on the development of hearing
    Amsterdam : Elsevier
    Comparative Biochemistry and Physiology -- Part A: Physiology 103 (1992), S. 105-111 
    Details
    ISSN: 0300-9629
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0300-9629(92)90248-O
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  • 6
    Electronic Resource
    Electronic Resource
    Über die Interpolationspolynome von Tschebyschew (1959)
    Springer
    Monatshefte für Mathematik 63 (1959), S. 277-286 
    Details
    ISSN: 1436-5081
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01295201
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  • 7
    Electronic Resource
    Electronic Resource
    1,3-Diphenylpropan-1,3-diamines IX. reaction of α-chlorooxime ethers with α-lithiobenzylamines (1996)
    Springer
    Monatshefte für Chemie 127 (1996), S. 763-774 
    Details
    ISSN: 1434-4475
    Keywords: 1,3-Diphenylpropane-1,3-diamines ; Benzylamine carbanions ; α-ChloroacetophenoneoximeO-methyl ether
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Carbanionen der Benzylaminderivate1–4 wurden mit Chloroximether5 umgesetzt, um Vorstufen von 1,3-Diphenylpropan-1,3-diaminen zu erhalten. Isonitril1 lieferte die erwartete Verbindung, während das lithiierte Benzamid2 oxidativ dimerisiert und das Chloroxim5 ummetallierte. Das Isoxazolidin3 reagierte zu der gewünschten Verbindung21 (Diastereomerengemisch), während das Imin4 in niedriger Ausbeute zum Aminoxim15 führte.
    Notes: Summary The carbanions of the benzylamine derivatives1–4 have been reacted with α-chlorooxime ether5 in order to get precursors of 1,3-diphenylpropane-1,3-diamines. Isonitrile1 afforded the expected result, whereas lithiated benzamide2 underwent oxidative dimerization and transmetallated chlorooxime derivative5. Isoxazolidine3 gave the condensation product21 as a mixture of diastereomers; treatment of imine4 led to the desired amine-oxime15 in low yield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00817268
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  • 8
    Electronic Resource
    Electronic Resource
    1,3-Diphenylpropane-1,3-diamines, X: Synthesis and biochemical evaluation of highly substituted 1,3-diphenylpropane-1,3-diamines and preparation of their Pt(II) complexes (1996)
    Springer
    Monatshefte für Chemie 127 (1996), S. 1073-1080 
    Details
    ISSN: 1434-4475
    Keywords: 1,3-Diphenylpropane-1,3-diamines ; Receptor binding affinity ; Estrogenic activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Liganden der Titelverbindungen1 und2 wurden aus dem entsprechenden Chalcon5 mit Hydrazinhydrat und anschließende N-N-Spaltung hergestellt. Die oestrogene Wirkung der Diamine11 und12 wurde im Rezeptorbindungstest an Kalbsuterus-Zytosol und durch einen Luziferase-Test an MCF 7-2a-Zellen bestimmt. Die Verbindungen wirken viel schwächer alsSchönenbergers aktivste Substanz ([meso-1,2-Bis(2,6-dichlor-4-hydroxyphenyl)ethan-1,2-diamin]dichloro-Platin(II),3).
    Notes: Summary The ligands of the title complexes1 and2 were prepared from the pertinent chalcone5 and hydrazine hydrate, followed by N-N cleavage. The estrogenic activity of the diamines11 and12 was determined by measuring the RBA values (calf uterine cytosol) and by a luciferase test in MCF 7-2a cells. The compounds are by far less active thanSchönenberger's most active compound ([meso-1,2-bis(2,6-dichloro-4-hydroxyphenyl)ethane-1,2-diamine]dichloro-platinum(II),3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00807580
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  • 9
    Electronic Resource
    Electronic Resource
    1,3-Diphenylpropane-1,3-diamines XI. Conversion of a 3-hydroxy-1,3-diphenylpropan-1-one to 1,3-diphenylpropane-1,3-diamines (1997)
    Springer
    Monatshefte für Chemie 128 (1997), S. 1247-1254 
    Details
    ISSN: 1434-4475
    Keywords: 1,3-Diphenylpropane-1,3-diamines ; 3-Hydroxy-1,3-diphenylpropan-1-one ; 3,5-Diphenyl-4,5-dihydropyrazole ; syn-Reduction of β-hydroxyketones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Hochdiastereoselektive BH3/THF-syn-Reduktion des 3-Hydroxy-1,3-diphenylpropan-3-on/BBr3-Komplexes3/BBr3 (vergl.Sarko) lieferte dasmeso-Diol4, wähend das Razemat5 durch BH3/THF-Reduktion ohne Komplexbildung entstand. Mesylierung, Ersatz von Mesylat durch Azid und SnCl2/Thiophenol-Reduktion führte zu den Diaminen10 und11, die auch durch reduktive N-N-Spaltung aus dem 4,5-Dihydropyrazol13 erhalten wurden.
    Notes: Summary Highly diastereoselective BH3/THF syn-reduction of the 3-hydroxy-1,3-diphenylpropan-1-one/BBr3 complex3/BBr3 (cf.Sarko) afforded themeso-diol4, whereas racemate5 was obtained by BH3/THF reduction without complexation. Mesylation, exchange of mesylate by azide, and reduction with SnCl2/thiophenol led to the diamines10 and11 which were also produced by reductive N-N cleavage of the 4,5-dihydropyrazole13.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00807256
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  • 10
    Electronic Resource
    Electronic Resource
    Methylhydrazine derivatives, a new class of cytotoxic agents (1963)
    Springer
    Cellular and molecular life sciences 19 (1963), S. 129-129 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Ausgehend von der Beobachtung, dass 1-Methyl-2-benzyl-hydrazin tumorhemmend wirkt, wurden durch systematische Variationen die für diese Wirkung essentiellen Strukturmerkmale festgelegt. Aus einer grösseren Anzahl von Verbindungen wurden 1-Methyl-2-p-(isopropylcarbamoyl)benzyl-hydrazin-hydrochlorid und 1-Methyl-2-p-allophanoylbenzyl-hydrazin-hydrobromid für ausgedehnte experimentelle und klinische Versuche ausgewählt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02171588
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