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  • 1
    Electronic Resource
    Electronic Resource
    Determination of the structural parameters of reverse micelles after uptake of proteins (1986)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 90 (1986), S. 1849-1853 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100400a023
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  • 2
    Electronic Resource
    Electronic Resource
    ^1^3C nuclear magnetic relaxation studies at 62 MHz
    Amsterdam : Elsevier
    Journal of Magnetic Resonance (1969) 4 (1971), S. 198-207 
    Details
    ISSN: 0022-2364
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-2364(71)90104-1
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  • 3
    Electronic Resource
    Electronic Resource
    Characterization of ribosomal RNA from insect eggs (Euscelis plebejus, cicadina;Smittia spec., chironomidae, diptera (1978)
    Springer
    Cellular and molecular life sciences 34 (1978), S. 1260-1261 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The molecular weights of ribosomal RNAs from eggs of 2 different insect species and of their mitochondrial rRNA were determined. By denaturating conditions, the 28 S rRNA from both insect eggs is converted to 18 S products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01981404
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  • 4
    Electronic Resource
    Electronic Resource
    Protein synthesis by rat hepatoma × mouse teratocarcinoma somatic cell hybrids (1983)
    Springer
    Somatic cell and molecular genetics 9 (1983), S. 111-119 
    Details
    ISSN: 1572-9931
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The synthesis of intracellular and secretory proteins by rat hepatoma (MHC) and mouse teratocarcinoma (PCC4AZA1) cells and MHC x PCC4AZA1 somatic cell hybrids was examined with two-dimensional (O'Farrell) electrophoresis. The gels of the PCC4AZA1 and hybrid cells were nearly identical and were quite different from those of the MHC cells. The teratocarcinoma phenotype was, therefore, dominant in the teratocarcinoma x hepatoma somatic cell hybrids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01544052
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  • 5
    Electronic Resource
    Electronic Resource
    Spectroscopic investigations of peptide 401 from bee venom (1981)
    New York : Wiley-Blackwell
    Biopolymers 20 (1981), S. 373-385 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The circular dichroism (CD) and 1H-nmr properties of peptide 401, a bee venom component with 22 amino acid residues and two disulfide bridges, have been studied under a variety of conditions and compared with those of the structurally related octadecapeptide apamin. The major component of the relatively intense CD signal in the 200-230-nm region in both cases probably arises from the rigid asymmetric ring structures of the disulfide bridges. CD spectra are practically unaffected by pH (in the region 1-7), solvent (water, trifluoroethanol, dioxane/water mixtures), concentration of peptide, or additions of salt (guanidinium chloride, KCl). Temperature changes (in the range 20-59°C) have only a modest influence. For both apamin and peptide 401, reduction of the two disulfide bridges results in a dramatic change of the CD spectrum, which acquires the characteristic form of a random coil. Preliminary 1H-nmr data are presented for both the reduced and the oxidized form. Several resonance peaks could be assigned on the basis of the theoretical random-coil spectrum. In the oxidized forms, six slowly exchangeable amide protons could be found in a spectrum taken at low pH, which are ascribed to intramolecular hydrogen bonds. Each of the four protons of the two histidine residues of peptide 401 appears as two distinct resonance peaks in the oxidized form but not in the reduced form. This is interpreted as arising from conformational heterogeneity of peptide 401.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.1981.360200209
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  • 6
    Electronic Resource
    Electronic Resource
    Lanthanhaltige Silicate und Germanate als Halogen- und Oxyapatite (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 438 (1978), S. 142-150 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Lanthanum Containing Silicates and Germanates as Halogen Apatites and OxyapatitesHalogen apatites M4La6(XO4)6Z2 and oxyapatites M2La8(XO4)6O2 have been prepared: M = Sr, Pb, Ba; X = Si, Ge, and Z = F, Cl. The lattice parameters are discussed. The i.r. active internal vibrations of the silicate ion are assigned. A translational vibration of the “free” oxide ions in the oxyapatites causes an intense absorption at about 400 cm-1 (silicates) and 350 cm-1 (germanates), resp. The products “M3La6(XO4)6” and “M4La6(XO4)6O” are mixtures of various phases. Their respective apatite phase is a solid solution between M2La8(XO4)6O2 and the defect apatite M4La6(XO4)6O□. Its composition mostly approximates to M2La8(XO4)6O2, however.
    Notes: Es wurden Halogenapatite M4La6(XO4)6Z2sowie Oxyapatite M2La8(XO4)6O2 dargestellt; M = Sr, Pb, Ba; X = Si, Ge und Z = F, Cl. Die Gitterdaten werden diskutiert. Die IR-aktiven inneren Schwingungen des Silicat-Ions werden zugeordnet. Eine Translationsschwingung der „freien“ Oxid-Ionen in den Oxyapatiten bewirkt eine starke Bande bei etwa 400 cm-1 (Silicate) bzw. 350 cm-1 (Germanate). Die Produkte „M3La6(XO4)6“ und „M4La6(XO4)6O“ sind Gemische verschiedener Phasen. Ihre jeweilige Apatitphase stellt einen Mischkristall zwischen M2La8(XO4)6O2.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784380115
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  • 7
    Electronic Resource
    Electronic Resource
    Über Bleisilberphosphate mit Apatitstruktur (1979)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 448 (1979), S. 71-78 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Lead Silver Phosphates with the Apatite StructureThe hitherto unknown leas silver phosphate (Pb8Ag2PO4)6 has been prepared. It has an apatite structure with unoccupied halide positions like the analogous lead alkali compounds and forms solid solutions with Pb10(PO4)6O, Pb10(PO4)6(OH)2, and Pb10(PO4)6Cl2. At 800°C, Pb8Ag2(PO4)6 decomposes to solid Pb3(PO4)2 and PbAgPO4. (Pb, Ag) apatites have been precipitated from aqueous solutions. On the side being richer in Ag they can approximately be formulated as solid solutions between Pb8Ag2(PO4)6 and Pb10(PO4)6(OH)2. However, the i.r. spectrum reveals clear differences compared with thermal and hydrothermal preparations. The distribution of cations shows nonideal behaviour with reduced tendency for fixation of Ag+, if the content of Ag in the precipitate is high. The compound PbAgPO4 decomposes below 520°C to Pb8Ag2(PO4)6 and Ag3PO4. The arsenate apatite Pb8Ag2(AsO4)6 decomposes below 530°C to Pb3(AsO4)2 and Ag3AsO4.
    Notes: Dargestellt wurde das bisher unbekannte Bleisilberphosphat Pb8Ag2(PO4)6. Es besitzt wie die analogen Bleialkaliverbindungen eine Apatitstruktur mit unbesetzten Halogenidlagen und bildet Mischkristalle mit Pb10(PO4)6(OH)2 sowie Pb10(PO4)6Cl2. Bei 800°C zersetzt sich Pb8Ag2(PO4)6 in festes Pb3(PO4)2 und PbAgPO4. Aus wäßriger Lösung gefällte (Pb, Ag)-Apatite können auf der Ag-reicheren Seite näherungsweise als Mischkristalle zwischen Pb8Ag2(PO4)6 und Pb10(PO4)6(OH)2 beschrieben werden. Allerdings weist das IR-Spektrum klare Unterschiede gegenüber thermischen und hydrothermalen Präparaten auf. Die Kationenverteilung zeigt nicht ideales Verhalten mit verminderter Tendenz zum Ag+-Einbau, wenn der Ag-Gehalt des Niederschlags hoch ist. Die Verbindung PbAgPO4 zerfällt unterhalb 520°C in Pb8Ag2(PO4)6 und Ag3PO4. Der ebenfalls dargestellte Arsenatapatit Pb8Ag2(AsO4)6 zersetzt sich unterhalb 530°C in Pb3(AsO4)2 und Ag3AsO4.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19794480107
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