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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Numerische Mathematik 5 (1963), S. 138-141 
    ISSN: 0945-3245
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Letf(x) be a function, defined and “well behaved” on the finite intervala≦x≦b Clenshaw andCurtis [1] have given a method for the numerical integration off(x) froma tob, based on the approximation off(x) with a finite series of Chebyshev polynomials. We show that this method is asymptotically equivalent to using the trapezoïdal rule for integratingg(y)=f(cosy).
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Little is known as yet about the nature of these proteins. It was pointed out by Putnam2 that these rapidly sedimentating proteins are exclusively encountered in the case of so-called (3-myelomata. They differ from the p2M-macrglkulms m inimunological characteristics3. In sera from nine patients ...
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Inorganica Chimica Acta 4 (1970), S. 171-174 
    ISSN: 0020-1693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 357-361 
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: An iteration method is presented for calculation of the gross physical properties of polycrystals in terms of the physical properties of the crystals. No assumptions are made concerning the shape or behaviour of the crystallites. The only mathematical condition to be fulfilled is that the product of the matrix of a gross physical property with its inverse must give a unit matrix if the same is valid for the crystals. The method is demonstrated by the calculation of the effective elastic tensor of a hypothetical texturized polycrystal consisting of Cu crystallites. The calculated upper and lower bounds of the Young modulus are extremely close to each other.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 99 (1968), S. 1615-1623 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Phenylphosphonic difluoride reacts with boron chloride at room temperature to give phenylphosphonic dichloride and boron fluoride with phenylphosphonic fluoride chloride as a stable intermediate.
    Notes: Zusammenfassung Phenylphosphoroxydifluorid reagiert mit Bor(III)chlorid bei Raumtemperatur zu Phenylphosphoroxydichlorid und Bor(III)fluorid, wobei Phenylphosphoroxyfluoridchlorid als stabiles Zwischenprodukt entsteht, das dann mit BCl3 weiterreagiert.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Probability theory and related fields 9 (1967), S. 10-15 
    ISSN: 1432-2064
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 101 (1970), S. 1-10 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract The molar conductivities of SbCl5 and BCl3 in nitrobenzene are increased by addition of phosphoryl compounds. The conductivity depends on the donor strength of the phosphoryl compounds: POCl3〈PhPOF2〈PhPOFCl〈PhPOCl2〈 〈Ph 2POF∼Ph 2POCl〈TBP〈TMP〈Ph 3PO〈HMPA provided that no side reaction occurs. The ionization is attributed to autocomplex formation: $$2 D \cdot ACl_n \begin{array}{*{20}c} { - \to } \\ { \leftarrow - } \\ \end{array} [D_2 ACl_{n - 1} ]^ + + [ACl_{n + 1} ]^ -$$ .
    Notes: Zusammenfassung Die molaren Leitfähigkeiten von SbCl5 und BCl3 in Nitrobenzol werden durch Zugabe von Phosphorylverbindungen erhöht, und zwar steigt die Leitfähigkeit mit zunehmender Donorstärke an: POCl3〈PhPOF2〈PhPOFCl〈PhPOCl2〈〈Ph 2POF∼Ph 2POCl〈TBP〈TMP〈Ph 3PO〈HMPT, soferne keine Folgereaktion auftritt. Die Ionisation wird auf Autokomplexbildung der Addukte, entsprechend $$2 D \cdot ACl_n \begin{array}{*{20}c} { - \to } \\ { \leftarrow - } \\ \end{array} [D_2 ACl_{n - 1} ]^ + + [ACl_{n + 1} ]^ -$$ zurückgeführt.
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  • 8
    ISSN: 1573-5117
    Keywords: Diplectrona modesta ; Trichoptera ; Hydropsychidae ; intermittent stream ; desiccation survival
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Larvae of the caddisfly, Diplectrona modesta (Hydropsychidae), were found to be permanent inhabitants of a small, intermittent, headwater stream in southern Ontario. They survived desiccation for at least four weeks in summer. A laboratory experiment gave a mean survivorship of 50% after 30 days without water in stream gravel and stones after the larvae had been permitted to construct their shelters. Survivors were those that constructed their tubes deep in the substrate.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of solution chemistry 3 (1974), S. 83-89 
    ISSN: 1572-8927
    Keywords: Conductance ; sodium tetrabutylaluminate ; tetrabutylammonium tetrabutylaluminate ; tetrahydrofuran ; benzene ; ion pairs ; ion aggregates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Conductance measurements are reported for NaAlBu 4 and Bu 4 NAlBu 4 in benzene and in tetrahydrofuran (THF) from a concentration of approximately 5×10−3 M to the fused state for each salt. This is the first reported study where a comparison of a salt with a small cation is made with one having a large cation in a noncomplexing solvent (benzene) and a complexing solvent (THF). The similarity in conductance behavior in THF and the differences in benzene are considered in terms of ion-ion and ion-solvent interactions.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wird das Bewitterungsverhalten von Blei/Barium/Cadmium-bzw. Barium/Cadmium-stabilisierten Profilen mit neuentwickelten, schwermetallfreien Profilen, sogenannten HMF Profilen verglichen.Die Bewitterungsprüfung erfolgte in Freien, im Xenotest 450, QUV(A), und QUV(B). Verfolgt wurden die farbmetrischen Werte (ΔE, ΔL, ΔA, ΔB) und der Glanzverlust in Abhängigkeit von der Bewitterungsdauer. wahrend im QUV(B) fur die Praxis unbrauchbare Ergebnisse erhalten wurden, korrelieren die QUV(A) Gesamtfarbdifferenzergebnisse sehr gut mit den Freibewitterungsergebnissen. Die HMF stabilisierten Profile sind im Oberflächenangriff den Standard Blei/Barium/Cadmium-Profilen gleichwertig, wenn nicht überlegen. In der Farbmetrik verhalten sich die neuentwickelten HMF Profile gleichwertig den Blei/Barium/Cadmium Standardprofilen.
    Notes: The weathering behaviour of lead/barium/cadmium-respectively barium/cadmium-stabilized profiles has been compared with new developed profiles which are free from heavy metals, the so-called HMF profiles.The weathering tests have been made out doors, in Xenotest 450, QUV(A), and QUV(B). The colourmetric values (ΔE, ΔL, ΔA, ΔB) and the loss of brightness were measured in dependence of weathering time. The results of QUV(A) measurements were not suitable for practical application, but the findings of the total colour difference of QUV (A) measurements correlate very well with the results of out door weathering. With respect to the surface attack HMF-stabilized profiles are equivalent to the lead/barium/cadmium standard profiles or even superior. The colourmetric behaviour of the new developed HMF profiles is equivalent to the lead/barium/cadmium standard profiles.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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