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  • Articles: DFG German National Licenses  (5)
  • Blasting  (3)
  • Inorganic Chemistry  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Geotechnical and geological engineering 7 (1989), S. 301-313 
    ISSN: 1573-1529
    Keywords: Blasting ; cast blasting ; dam construction ; caving blast
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Summary A proposal is under consideration to construct a dam on an experimental basis by a cast (or directional) blasting technique, ‘DBT’. The dam site is located at Bharari Khad, a tributary of the Sutlaz river in Himachal Pradesh. Site investigations have been completed and a large scale blast has been designed for construction of the experimental dam. The paper describes the basic design concept of DBT and application of ‘throw’ and ‘caving’ methods for construction of dams. The preliminary tests required to design the blasting pattern are detailed. The technique has a great potential because it reduces construction cost and time particularly in inaccessible mountain regions.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Geotechnical and geological engineering 7 (1989), S. 333-340 
    ISSN: 1573-1529
    Keywords: Blasting ; fragmentation ; natural blocks ; surface mining ; quarrying
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Geotechnical and geological engineering 7 (1989), S. 239-248 
    ISSN: 1573-1529
    Keywords: Blasting ; rock fragmentation ; rock discontinuities ; surface mining ; quarrying
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 398 (1973), S. 312-316 
    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
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  • 5
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Stabilitätskonstanten der Komplexe von Mn++, Fe++, Co++, Ni++, Cu++, Zn++, Cd++ und UO++2 mit 5, 7-Dichlor-, 5, 7-Dibrom- und 5, 7-Dinitro-8-hydroxychinolin und der entsprechenden N-Oxide sind in Dioxan/Wasser-Gemischen (75/25) bei 35°C in Gegenwart von 0,20 m Natriumperchlorat durch Titration nach Irving und Rossotti bestimmt worden. Eine mögliche Erklärung für die beobachtete Abhängigkeit der Stabilitätskonstanten der Komplexe bei Variation des Liganden und andererseits bei Variation des Metalls wird vorgeschlagen.
    Notes: The stability constants of complexes of Mn++, Fe++, Co++, Ni++, Cu++, Zn++, Cd++ and UO++2 with 5,7-dichloro-, 5,7-dibromo- and 5,7-dinitro-8-hydroxyquinoline and their corresponding N-oxides have been determined in 75 + 25 v/v dioxan + water medium at 35°C in presence of 0.20 M sodium perchlorate by pH-titration technique as given by IRVING and Rossotti. A possible explanation for the observed orders of the stability constants of the metal complex with the different ligands, and of the complexes of a particular ligand with different metal ions is also proposed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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