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  • Electronic Resource  (10)
  • 1980-1984  (2)
  • 1960-1964  (8)
  • 1
    Electronic Resource
    Electronic Resource
    Oxygen isotope paleotemperature analyses of lower and middle Jurassic fossils from pliensbach, Württemberg (Germany) (1963)
    Springer
    Cellular and molecular life sciences 19 (1963), S. 461-465 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung In der vorliegenden Arbeit werden Temperaturbestimmungen an 22 Belemniten, 2 Muscheln und Seeigelstacheln aus dem mittleren und oberen Lias, sowie dem mittleren und unteren Dogger angegeben. Die Proben wurden in der Umgebung von Pliensbach (Württemberg) gesammelt. Aus diesen Analysen geht hervor, dass für die Zeit des Toarcian ein Temperaturmaximum angenommen werden muss, während im mittleren Lias sowie im mittleren Dogger niedrigere Temperaturen vorherrschten. Die Temperaturschwankungen betragen zwischen Liasγ und Liasɛ ca. 6°C und zwischen Liasɛ und Doggerδ ca. 11°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02150647
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  • 2
    Electronic Resource
    Electronic Resource
    Distribution of lysozyme in synovial tissue of patients with osteoarthritis and rheumatoid arthritis demonstrated by different enzyme histochemical methods (1982)
    Springer
    Rheumatology international 2 (1982), S. 41-47 
    Details
    ISSN: 1437-160X
    Keywords: Mononuclear phagocytes ; Rheumatoid arthritis ; Osteoarthritis ; Enzyme histochemical demonstration of lysozyme ; Polymorphonuclear cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Lysozyme-producing cells were analysed by enzyme histochemistry in paraffin sections of synovial tissue of 60 patients with rheumatoid arthritis (RA) and 20 patients with osteoarthritis (OA). For lysozyme detection three enzym histochemical systems — peroxydase-antiperoxydase, alkaline phosphatase and biotin-avidin — were used in parallel experiments. Lysozyme was found to be produced by polymorphonuclear cells, mononuclear phagocytes and part of synovial lining cells. All types of lysozyme-producing cells were increased in RA compared with OA. Subgrouping of RA synovitis according to histomorphological criteria allowed the demonstration of an inverse relationship between the number of lysozyme-producing cells and the grade of proliferation of fibroblasts, called mesenchymoid transformation by Fassbender [19]. The different methods of lysozyme detection differed in specificity and sensitivity. The immunoenzymatic staining of lysozyme allows specific and quantitative evaluation of phagocyting cells in RA and OA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00541270
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie des Bors. XVI. Dialkylamino-chloro-borane (1962)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 318 (1962), S. 293-303 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Bis(dialkylamino) boranes, (R2N)2BH, are easily prepared either by hydrogenation of the corresponding chlorides, (R2N)2BCl, by means of LiH or by transamination of [(CH3)2N]2BH. From the reaction products and two moles of HCl, dialkylammonium chlorides and the easily dimerizing dialkylamino chloroboranes, R2NB(H)Cl, are obtained. These react, in the monomeric form, with further HCl to R2NH · B(H)Cl2. In contrast with the other bis(dialkylamino)-boranes, [(CH3)2N]2BH reacts with HCl without any cleavage of the B-N bond yielding the salt [Cl(H)B(NHMe2)2]Cl.
    Notes: Bis(dialkylamino)-borane, (R2N)2BH, sind durch Hydrierung von Bis(dialkylamino)chloroboranen mit Lithiumhydrid in Äther und durch Umaminierung von Bis(dimethylamino)-boran leicht zugänglich. Bei der Umsetzung der Bis(dialkylamino)-borane mit 2 Mol HCl erhält man Dialkylaminhydrochloride und Dialkylamino-chloro-borane, R2NB(H)Cl, die sich leicht dimerisieren. An die monomeren Verbindungen lagert sich HCl zu R2NH · B(H)Cl2 an. Im Gegensatz zu den anderen Bis(dialkylamino)-boranen reagiert (Me2N)2BH mit HCl ohne Spaltung der B-N-Bindung zu dem Salz [Cl(H)B · (NHMe2)2]Cl.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19623180508
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  • 4
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie des Bors. XXII. Darstellung und Eigenschaften einiger Alkyl-dimethylamino-borhalogenide (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 324 (1963), S. 270-277 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Comproportionation of alkylborondihalides with alkyl-bis(dimethylamino)-boranes yields alkyl-dimethylamino-boronhalides, RB(X)NMe2. These dimerize more readily as the carbon chain of the alkyl groups and the size of the halogen atom decreases. The halogen atom in monomeric RB(X)NMe2 is easily replaced by other ligands.
    Notes: Alkyl-dimethylamino-borhalogenide, RB(X)NMe2, (X = Cl, Br) sind durch Komproportionierung von Alkylbordihalogeniden mit Alkyl-bis(dimethylamino)-boranen zugängig. Mit abnehmender Kettenlänge der Alkylgruppe und abnehmendem Radius des Halogens wächst die Tendenz zur Dimerisierung der monomeren Verbindungen. In diesen sind die Halogenatome leicht substituierbar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19633240507
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  • 5
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie dea Bors. XX Zur Kenntnis von Alkyl-bis(dimethylamino)-boranen (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 322 (1963), S. 297-309 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Alkyl-bis(dimethylamino) boranes can be obtained by solvolysis of alkyl boron dichlorides in dimethyl amine, or by alkylation of bis(dimethylamino)-chloro-borane with alkyl lithium. Their reactions with HCl, HBr and HJ was studied.
    Notes: Alkyl-bis(dimethylamino)((dimethylamino))borane erhält man bei der Dimethylaminolyse von Alkylbordichloriden oder bei der Alkylierung von Bis(dimethylamino)-chloroboran mit Alkyl-Lithium. Ihr Verhalten gegenüber den Halogenwasserstoffen HCl, HBr und HJ wurde untersucht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19633220509
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  • 6
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie des Bors. XXI. Zur Kenntnis der Symmetrischen Dialkyl-dibor-bis-dimethylamide (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 324 (1963), S. 129-145 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Symmetrical dialkyl-bis(dimethylamino)-diborons, R(Me2N)B-B(NMe2)R, are obtained by dehalogenation of RB(NMe2)Cl with sodium-potassium alloy. The B-B bond in these compounds is more stable than that in B2(NMe2)4. Nucleophilic and electrophilic substitutions are generally accompanied by extensive disproportionation of the diboron compounds.
    Notes: Durch Dehalogenierung von RB(NMe2)Cl2) mit Natrium-Kaliumlegierung erhält man thermisch relativ stabile Dialkyl-dibor-bis(dimethylamide), R(Me2N)B-B(NMe2)R. Die B-B-Bindung ist in diesen Verbindungen wesentlich reaktionsfähiger als die in B2(NMe2)4. Nucleophile und elektrophile Substitutionen an R2B2(NMe2)2 sind von einer Disproportionierung der Diborverbindung begleitet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19633240303
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  • 7
    Electronic Resource
    Electronic Resource
    Neue Dibor-Verbindungen (1961)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 73 (1961), S. 408-408 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19610731112
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  • 8
    Electronic Resource
    Electronic Resource
    1.3.4-Triaza-2.5-diborolidine (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 76 (1964), S. 535-535 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19640761207
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  • 9
    Electronic Resource
    Electronic Resource
    An analytical solution for axisymmetric tunnel problems in elasto-viscoplastic media (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    International Journal for Numerical and Analytical Methods in Geomechanics 8 (1984), S. 325-342 
    Details
    ISSN: 0363-9061
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Notes: An analytical solution is presented for the time-dependent stresses and displacements in plane strain around a circular hole when it is loaded by an axisymmetric internal and far-field pressure. The material is assumed to be elasto-viscoplastic with dilatant plastic deformations according to a non-associated flow rule. Strain softening is considered by a modified St. Venant slider which is characterized by Mohr-Coulomb yield conditions for both the peak and the residual strengths.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nag.1610080403
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  • 10
    Electronic Resource
    Electronic Resource
    1,3,4-Triaza-2,5-diborolidines (1964)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 3 (1964), S. 506-507 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196405062
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