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  • Electronic Resource  (9)
  • 1975-1979  (7)
  • 1965-1969  (2)
  • 1976  (7)
  • 1967  (2)
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  • Electronic Resource  (9)
Years
  • 1975-1979  (7)
  • 1965-1969  (2)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    The structure of bis[dichloro-6-mercaptopuriniumcopper(I)] dihydrate: a refinement (1976)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 32 (1976), S. 979-980 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S056774087600441X
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  • 2
    Electronic Resource
    Electronic Resource
    The crystal and molecular structure of α-D-ribofuro[l',2':4,5]-2-oxazolidone, a decomposition product of 5-azacytidine (1976)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 32 (1976), S. 2329-2333 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740876007693
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  • 3
    Electronic Resource
    Electronic Resource
    Possibility of 24MgH+ in the solar atmosphere-high resolution rotation-vibration spectra (1976)
    Springer
    Solar physics 49 (1976), S. 217-230 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High resolution rotation-vibration spectra of Δv = 1 and 2 sequences of 24MgH+ are obtained by a differencing process invoking the known structures of electronic bands observed in the region 214–340 nm. A reversal of R branch (band head formation) is noticed in each of the rotation-vibration bands. The J = 1 → J = 0 transition is predicted to be at 376098, 365301, 354286 and 342981 MHz for v = 0,1,2 and 3, respectively, in the ground electronic state 1∑+. The equilibrium rotational constants B e, α e and r e for the X 1•E+ state are found 6.4637cm−1, 0.1899 cm−1 1.6421 Å, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00162446
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  • 4
    Electronic Resource
    Electronic Resource
    Isolation of Cyanophages from India (1967)
    [s.l.] : Nature Publishing Group
    Nature 216 (1967), S. 1020-1021 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] fig. 1. Placís of Anabaenopsis raciborskii. Figs. 2-4. Photomicrographs of lysates. (x 800, phase optics.) Figs. 2-3. Anabaenopsis circularíshowing trails of unlysed gas vacuoles and spores. Fig. 4. A. raciborskii showing unlysed heterocysts and gas vacuoles. The isolates on P. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2161020a0
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  • 5
    Electronic Resource
    Electronic Resource
    Role of catecholamines in the hypothermic activity of cannabis in albino rats (1976)
    Springer
    Psychopharmacology 50 (1976), S. 199-204 
    Details
    ISSN: 1432-2072
    Keywords: Cannabis ; Hypothermia ; Catecholamines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Role of brain monoamines in the hypothermic activity of cannabis resin (CI) in albino rats was studied using agents which influence monoamine synthesis, storage, release, reuptake, metabolism and receptor activity and monoaminergic neuronal activity. Delta-9-tetrahydrocannabinol content of resin was estimated to be 17%. Reserpine was used for comparison. CI was given orally in the dose of 50 mg/kg. Nialamide (NM) and α-methyl-metatyrosine (MMT) caused slight hyperthermia. p-Chlorophenylalanine (PCPA), α-methyl-p-tyrosine (MPT), 5,6-dihydroxytryptamine (DHT, icv) and 6-hydroxydopamine (6-HD, icv) had no effect on body temperature. α-Methyldopa (m-Dopa), diethyldithiocarbamate (DDC), DDC with l-Dopa, gammabutyrolactone (GBL), phentolamine (PHENT), phenoxybenzamine (PBZ), propranolol (PROP) and imipramine (IMP) produced hypothermia. Hypothermic activity of CI was potentiated by NM and PCPA, unaffected by DHT and m-Dopa, blocked by MMT, MPT, 6-HD, GBL, PHENT, PROP and chlorpromazine (CPZ), inhibited by DDC, DDC and l-Dopa and PBZ. CI induced hyperthermia in tolerant rats could be reversed to hypothermia by IMP. Reserpine hypothermia was blocked by NM, MPT, 6-HD and CPZ. There was a partial cross tolerance between cannabis and reserpine. Studies indicate that the hypothermic activity of CI similar to that of reserpine is mediated through central catecholamines and not 5-HT, and that noradrenaline is involved and not dopamine. However, the mechanism of action of cannabis and reserpine on nor-adrenergic neurone seems to be different.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00430493
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  • 6
    Electronic Resource
    Electronic Resource
    Isolation of gas vacuole-less mutants of the blue-green alga Anabaenopsis raciborskii (1976)
    Springer
    Archives of microbiology 111 (1976), S. 195-196 
    Details
    ISSN: 1432-072X
    Keywords: Mutation ; Blue-green alga ; Anabaenopsis raciborskii ; Gas vacuole ; Nitrogen fixation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract From a bloom forming blue-green alga, Anabaenopsis raciborskii, spontaneous mutants, which had lost the ability to form gas vacuoles have been isolated; the mutant frequency was 4.8×10-3. The filaments of gas vacuole-less mutants settled at the bottom of flasks in liquid culture media unlike the parent alga. The growth and nitrogen fixation were comparatively poor in the mutants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00446569
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  • 7
    Electronic Resource
    Electronic Resource
    Mutation to resistance for virusN-1 in the blue-green algaNostoc muscorum (1976)
    Springer
    Archives of virology 52 (1976), S. 85-90 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The spontaneous and nitrosoguanidine inducedN-1 virus resistant mutants of the blue-green algaNostoc muscorum were isolated with the average mutation frequency of 3.55×10−5 and 6.08×10−4 respectively. Of the surviving colonies 8 per cent became virus sensitive, whereas out of the remaining 92 per cent 9.3 per cent showed lysogenic behaviour and 13.3 per cent showed poor or no nitrogen fixing ability. Mutation to virus-resistance was independent of the presence of the virus. Spontaneous host range mutants of virus were not found in repeated experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01317867
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  • 8
    Electronic Resource
    Electronic Resource
    Studies on the Hydrazine Complexes of Some Bivalent Metal Ions in aqueous solution (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 349 (1967), S. 213-219 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Für die Hydrazin-Komplexe von Mn(II), Co(II), Ni(II), Cu(II) und Zn(II) werden Zusammensetzung und Bildungskonstanten nach der Methode von Rossotti und Rossotti ermittelt, wobei experimentell pH-Titrationen in Lösungen durchgeführt wurden, die Metall-perchlorat, Hydrazin-diperchlorat und Natriumperchlorat (Ionenstärke μ = 1, t = 30°C) enthalten. In entsprechender Weise wurden die Bildungskonstanten für die Protonisierung von Hydrazin bestimmt. Selbst bei den höchsten Verhältnissen: Gesamt-Hydrazin/Gesamt-Metall (etwa 60) haben die höchsten Komplexe nur bei Co(II) und Zn(II) das Verhältnis:Metall/Hydrazin = 1 : 2, während in allen anderen Fällen in Lösung nur 1 : 1-Komplexe zu existieren scheinen.Die Werte der Bildungskonstanten (30°C, μ = 1) siehe „Summary“.Die nach Bjerrum berechneten β1-Werte sind mit den gefundenen in recht guter Übereinstimmung mit Ausnahme für Co(II). Die Grenzen für die Bjerrum-Methode werden diskutiert.
    Notes: The compositions and formation-constants of the complexes formed by Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) with hydrazine have been evaluated graphically following the method of Rossotti and Rossotti using the necessary data from the results of pH titration of solutions containing the metal perchlorate, hydrazinium diperchlorate and sodium perchlorate at an ionic strength of unity at 30°C. The values of the successive equilibrium constants for the protonation of hydrazine, which were also needed, have been evaluated separately by similar procedure. Even at the rather high ratio of ca. 60 of (total hydrazine)/(total metal) the highest complexes which appear to be formed in the systems investigated have the ratio of metal:hydrazine of 1:2 for Co(II) and Zn(II), while in all the other cases only 1: 1 complexes appear to exist in solution.The values of the formation-constants (at 30°C; μ = 1) obtained are: \documentclass{article}\pagestyle{empty}\begin{document}$$\begin{array}{l} \log \beta _1 :{\rm Mn(II), 4}{\rm .76; Co(II), 1}{\rm .78; Ni(II),3}{\rm .18; Cu(II),6}{\rm .67;Zn(II), 3,69}{\rm.} \\ \log \beta _2 :{\rm Co(II), 3}{\rm .34; Zn(II), 6}{\rm .69}. \\ \end{array} $$\end{document}β1 values obtained from the Bjerrum relation are in fairly good agreement with those given above except for Co(II). The limitations of Bjerrum's method are discussed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19673490314
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  • 9
    Electronic Resource
    Electronic Resource
    Studies on MM″(NCS)4 [M=Ni(II), Fe(II), Zn(II), and M″=Hg(II) Zn(II)] complexes (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 423 (1976), S. 173-179 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Untersuchungen an MM″ (NCS)4-Komplexen (M = NiII, FeII, ZnII; M″ = HgII, ZnII)Komplexe des Typs MM′(NCS)4 · xL M = NiII, FeII, ZnII; M″ = HgII, ZnII; x = 2, 4, 6; L = Nicotinamid (nia), Isonicotinsaiurehydroxid (inh) 2-Aminopyrimidin (2apm)] wurden dargestellt und charakterisiert durch Elementaranalyse, molare Leitfähigkeit, magnetisches Moment, IR- und Elektronenspektren.
    Notes: Coordination complexes of the type MM″(NCS)4 · xL M = Ni(II), Fe(II), Zn(II), M″ = Hg(II), Zn(II), x = 2, 4, 6 and L = nicotinamide (nia), 3-cyanopyridine (3-cpy), 4-cyanopyridine (4cpy), 4-aminopyridine (4apy), isonicotinic acid hydrazide (inh), 2-aminopyrimidine (2apm)l have been prepared and characterized by elemental analysis, molar conductance, magnetic moment, infrared and electronic spectral studies. Molar conductance data of NiZn(NCS), complexes are equivalent to 1:1 electrolyte. The infrared spectral studies indicate that only bridged thiocyanate groups are present in the complexes of the type NiHg(SCN)4 · 4L [L=3 and 4cpy, inh] and FeHg(SCN)4 · 2L [L = nia, 2apm], whereas both bridged and terminal thiocyanates are present in the complexes of the type NiHg(SCN)4 · 4L [L = nia, 3apy and ZnHg(SCN)4 · 2(inh). BOHR magneton values and electronic spectral data indicate an octahedral environment around nickel and iron in their complexes. Symmetry and group theory have also been used to establish the structure of the complexes.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764230211
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