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  • 1
    Electronic Resource
    Electronic Resource
    Volume-Rectification of Crystals (1937)
    [s.l.] : Nature Publishing Group
    Nature 140 (1937), S. 1102-1102 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT has been shown by Khastgir and Das-Gupta1 that crystals like carborundum, silicon and zincite, which have no centres of symmetry, give volume-rectification when placed between mercury electrodes ; whereas with symmetrical crystals, for example, galena and iron pyrites, they ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1401102a0
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  • 2
    Electronic Resource
    Electronic Resource
    On nitride formation on chromium (001) surface (1985)
    Springer
    Journal of materials science 4 (1985), S. 653-655 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00726952
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  • 3
    Electronic Resource
    Electronic Resource
    Indian periodicals in the science citation index (1992)
    Springer
    Scientometrics 23 (1992), S. 291-318 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract The coverage of Indian S&T periodicals inSCI has been studied covering the period 1975–88. The study shows that coverage is rather poor due to a variety of reasons. Many of the Indian periodicals do not fulfil the criteria for getting covered inSCI. About 500 periodicals have been identified which are covered by at least one major indexing or abstracting service of the world. Total number of such periodicals is likely to be over 600. Slight improvement in the standard of these periodicals is likely to make many of them worthy of coverage bySCI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02017043
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  • 4
    Electronic Resource
    Electronic Resource
    Evaluation of recent scientific research output by a bibliometric method (1992)
    Springer
    Scientometrics 23 (1992), S. 31-46 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract Describes a new method of evaluation of scientific output by laboratories engaged in diverse fields of research. This method helps to evaluate those outputs which are quite recent and not amenable to citation analysis. For the purpose of analysis, impact factor of journals in which papers are published are considered. A method for normalisation of impact factor of journals has been described and, normalised impact factors have also been used for the purpose of analysis. It is found that in such analysis normalised impact factor tends to show better results compared to simple impact factor. The analysis helps us to generate numerous performance indicators such as average impact factor and normalised impact factor for each laboratory and the research complex such as CSIR as a whole; average impact factor and normalised impact factor for each scientist of a laboratory and the research complex; spectral distribution of papers falling within various ranges of impact factors and normalised impact factors. By comparing the performances over several years the trend of research activity of each laboratory can also be obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02020912
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  • 5
    Electronic Resource
    Electronic Resource
    Nitrosyl Rhenium Complexes: Iodonitrosyl derivatives (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 477 (1981), S. 229-234 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nitrosyl-Rhenium-Komplexe: Iodonitrosyl-DerivateRe(NO)I52- wurde als Cs+- Rb+- und dipyH+-Salz isoliert. Außerdem wurden das nicht elektrolytische Re(NO)I3L (L = 1,10-Phenanthrolin und 2,2′-Dipyridyl) und [Re(NO)IL2]PtCl6 dargestellt. Aus einer Lösung von Re(NO)(OH)3 in HI wurde eine Verbindung der Formel Re(H2O)(NO)(OH)I2 isoliert, deren Pyrolyse Re(H2O)0.5(NO)(OH)2I ergab. Bestimmung der elektronischen und IR-Spektren sowie der magnetischen Momente wurde durchgeführt. Die Eigenschaften der Iod-Derivate werden mit den entsprechenden der Fluor-, Chlor- und Brom-Komplexe verglichen.
    Notes: The anionic Re(NO)I52- has been isolated as salts of Cs+, Rb+, and dipyH+. The nonelectrolytic Re(NO)I3L (L stands for 1,10-phenanthroline and 2,2′-dipyridyl) and cationic [Re(NO)IL2]PtCl6 have also been prepared. From a solution of Re(NO)(OH)3 in HI, compound of formula Re(H2O)(NO)(OH)I2 has been isolated, pyrolysis of which yielded Re(H2O)0.5(NO)(OH)2I. Measurements of electronic and i.r. spectra and magnetic moments have been carried out. The properties of the iodo derivatives have been compared with those of the corresponding fluoro, chloro and bromo complexes.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814770632
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  • 6
    Electronic Resource
    Electronic Resource
    Studies on the Hydrolysis of Nitrosotrichlororhenium (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 431 (1977), S. 268-272 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Untersuchungen zur Hydrolyse des NitrosotrichlororheniumsHydratisiertes Nitrosotrichlororhenium, Re(NO)Cl3 · xH2O, kann nicht zur wasserfreien Verbindung getrocknet werden. Dabei wird HCl abgegeben und [Re(H2O)(NO)(OH)Cl2] bzw. [Re(H2O)0,5(NO)(OH)2Cl] in Abhängigkeit von den Bedingungen gebildet. Potentiometrische Untersuchungen zeigten, daß in wäßrig-äthanolischen Lösungen der Trichlorokomplex sehr schnell zwei Äquivalente Wasserstoffionen frei setzt, während die Abspaltung der Chloridionen zeitabhängig ist. Zwei Äquivalente an Chloridionen sind jedoch im Gleichgewichtsystem vorhanden. Das dritte Chloratom ist fest an das Rheniumatom gebunden. Eine Struktur mit Chlor-Brückenbindung wird vorgeschlagen.
    Notes: Hydrated nitrosotrichlororhenium, Re(NO)Cl3 · sH2O cannot be desiccated to the anhydrous product. Hydrogen chloride is expelled and [Re(H2O)(NO)(OH)Cl2] and [Re(H2O)0.5(NO) (OH)2Cl] are produced depending on the conditions of the reactions. Potentiometric studies have indicated that in aqueous ethanolic solutions, the trichloro complex rapidly liberates two equivalents of hydrogen ions while the release of chloride ions are time dependent. Two equivalents of chloride ions are, however, present in a equilibrium system. The third chlorine atom is rigidly bound to the rhenium atom. A chloride bridged structure has been proposed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774310130
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  • 7
    Electronic Resource
    Electronic Resource
    Chloronitrosyl complexes of rhenium (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 387 (1972), S. 265-270 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Herstellung und Eigenschaften einiger sehr stabiler Nitrosylkomplexe des Rheniums werden beschrieben: ReCl3(NO), Re(OH)3(NO), M2ReCl5(NO), wobei M = K, Cs, NH4. Sie sind den entsprechenden Rutheniumkomplexen analog. Die Oxydationsstufe der Gruppe ReNO ist +3, wobei die des Re-Atoms allein aber nicht ermittelt werden konnte. Die νNO-Valenzschwingung liegt im Bereich 1710-1920 cm-;1. Das obige Kalium- und Cäsium-salz sind bei Raumtemperatur schwach paramagnetisch.
    Notes: Preparation and properties of several highly stable nitroso complexes of rhenium viz. ReCl3(NO), Re(OH)3(NO)3 M2ReCl5(NO) where M is Cs, K and NH4 are described. These are analogous to the corresponding ruthenium complexes. The oxidation number of the ‘ReNO’ unit as a whole, is +3 but that of the rhenium atom cannot be determined. The nitric oxide stretching band lies within the range of 1710-1920 cm-1. The cesium and potassium salts are weakly paramagnetic at room temperature.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723870214
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  • 8
    Electronic Resource
    Electronic Resource
    Pyridino Nitrosyl Complexes of Rhenium (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 388 (1972), S. 184-188 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es werden Pyridinderivate von ReCl3(NO) beschrieben (Formeln siehe „Abstract“); sie sind beständig und fest. Analytische Zusammensetzung, IR und UV-Daten, elektrische Leitfähigkeit und magnetische Momente werden mitgeteilt.
    Notes: Preparation of pyridine derivatives of ReCl3(NO) viz. (pyH)2ReCl5(NO), pyH[ReCl4py(NO)], H[ReCl4py(NO)], K[ReCl4py(NO)], Ag[ReCl4py(NO)] and [ReCl3py2(NO)] are described. All these compounds are stable solids. They are characterised by their analytical composition, spectral data, conductance and magnetic moment values.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723880212
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  • 9
    Electronic Resource
    Electronic Resource
    Thermal study on some Nitrosyl Complexes of Rhenium (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 388 (1972), S. 189-192 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die thermische Zersetzung der Verbindungen (MH2)[ReCl5(NO)] wurde untersucht (M = Pyridin, 2,2′-Dipyridyl bzw. 1,10-Phenanthrolin). Ausgangsverbindungen und Zersetzungsprodukte siehe „Abstract“. Die freie Säure H[ReCl4Py(NO)] zerfällt bei 200°C in [ReCl3(NO)] und [ReCl3Py2(NO)].
    Notes: Study of the thermal decomposition of (MH)2[ReCl5(NO)] where M stands for pyridine, 2,2′ dipyridyl and 1,10 phenanthroline in carbon dioxide atmosphere is described. Pyridine compound produces pyH[ReCl4py(NO)] at 250°C and [ReCl3py2(NO)] at 400°C. Dipyridyl and phenanthroline compounds produce [ReCl3(dipy)(NO)] and [ReCl3(phen)(NO)] at 210°C and 220°C respectively. The acid H[ReCl4py(NO)] decomposes under similar condition at 200°C to produce [ReCl3(NO)] and [ReCl3py2(NO)] in equivalent quantities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723880213
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  • 10
    Electronic Resource
    Electronic Resource
    Chemistry of Trivalent Niobium (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 398 (1973), S. 312-316 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemie des dreiwertigen Niobs.Die stabile Verbindung KNb(SO4 · 4 H2O mit der Oxydationsstufe Nb3+ ist rein dargestellt und durch ihre chemischen Eigenschaften, UV-, optisches und IR-Spektrum sowie auch polarographisch charakterisiert worden.
    Notes: A stable compound of lower valent niobium viz. KKb(SO4)2 · 4 H2O in which Nb is in +3 oxidation state has been isolated pure. It has been characterised by its chemical properties, UV, visible and i.r. spectral studies and also by polarographic investigations.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19733980311
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