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  • Springer  (175)
  • American Physical Society  (162)
  • Public Library of Science  (48)
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  • Wiley-Blackwell
  • 2015-2019  (380)
  • 1965-1969  (11)
  • 1
    Publication Date: 2016-02-13
    Print ISSN: 0195-928X
    Electronic ISSN: 1572-9567
    Topics: Physics
    Published by Springer
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 208 (1966), S. 32-34 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Stärke isoliert aus Wasser Kastanie (Trapa Bispinosa Roxb) wurde in Amylose und Amylopektin mit konventioneller Methodik fraktioniert. An beiden, dem Amylose-Jod und Amylopektin-Jod-Komplex wurden spektrometrische Diagramme aufgenommen. Auch über die Kinetik des Abbaues dieser Komplexe wird berichtet.
    Notes: Summary Starch isolated from water-chestnut (Trapa Bispinosa Roxb) was fractionated into amylose and amylopectin by conventional method. Spectrophotometric studies have been carried on each of amyloseiodine and amylopectin-iodine complex. The kinetics of the decomposition of these complexes have also been reported.
    Type of Medium: Electronic Resource
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  • 3
  • 4
    Publication Date: 2019-09-26
    Print ISSN: 2470-0045
    Electronic ISSN: 2470-0053
    Topics: Physics
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 38 (1968), S. 123-125 
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung An drei Kreuzungsreihen von Sorten unterschiedlicher Hülsenfarbe (schokoladenbraun, rostrot, grün mit schokoladenbraunen Streifen und grün mit rostroten Streifen) wurde die Vererbung dieses Merkmals bei der Straucherbse (Cajanus cajan (L.) Millsp.) untersucht. Für das Auftreten der schokoladenbraunen Hülsenfarbe ist das GenL verantwortlich,L r, ein bisher unbekanntes Allelomorph vonL, für die rostrote Farbe, während das GenD die Verteilung der Farbe steuert.L ist vollständig dominant überL r undD unvollständig dominant überd. Auf Grund der gemachten Feststellungen werden die Genotypen für die einzelnen Phänotypen angegeben.
    Notes: Summary From three sets of crosses involving the phenotypes chocolate, red oxide, green with chocolate streaks and green with red oxide streaks, the action of the genes governing the phenotypes of the pods ofCajanus cajan (L.) Millsp. has been proposed. GeneL controls production of chocolate colour,L r an allelomorph ofL hitherto unreported, controls production of red oxide colour and geneD controls distribution of this colour. As regards inheritance of these two genes, the relationships betweenL andL r isL〉L r andD is incompletely dominant overd. The genotypes of the different phenotypes have been presented.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical methods of operations research 10 (1966), S. 1-14 
    ISSN: 1432-5217
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Zusammenfassung Rekursives lineares Programmieren wird als eine Aufeinanderfolge von linearen Programmproblemen definiert, bei denen eine rekursive Beziehung in das System eingebaut ist, und zwar entweder über die Koeffizienten der Zielfunktion, die Matrix der Beschränkungen oder die Parameter der rechten Seite. Wir betrachten hier den Fall, bei dem die Parameter der rechten Seite einer rekursiven Zeitrelation unterliegen, die den Zusammenhang zwischen den Plänen der gegenwärtigen Periode und früheren Erwartungen sowie deren Erfüllung angibt. Wir verfolgen zwei Ziele: Erstens wollen wir die Stabilitätseigenschaften eines linearen rekursiven Programm (LRP)-Modells analysieren, und zweitens wollen wir gewisse grundlegende Erweiterungen des LRP im Hinblick auf das sogenannte aktive Verhalten beim stochastischen Linearen Programmieren (SLP) angeben. Damit zusammenhängend werden einige einfache Theoreme entwickelt und eine kurze Diskussion der möglichen Richtungen empirischer Anwendungen angeschlossen.
    Notes: Summary Recursive linear programming is defined by a sequence of linear programming problems in which a recursive relation is built into the system through either the coefficients of the objective function, the constraint matrix, or the right-hand side parameters. Here we consider the case where the right-hand side parameters are subject to a recursive time relation indicating how current period plans are related to past expectations and performance. Our object here is twofold: first, to analyze the stability properties of a linear recursive programming (LRP) model and second, to indicate some basic extensions of the LRP in the light of what is generally called ‘the active approach’ of stochastic linear programming (SLP). Some simple theorems are developed in this connection and this is followed by a brief discussion of the possible lines of empirical applications.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical methods of operations research 9 (1965), S. 18-32 
    ISSN: 1432-5217
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Zusammenfassung Im allgemeinen ist bei Linear-Programming-Problemen mit statistischen Einflüssen die Zuverlässigkeit der optimalen Basislösung nicht bekannt. Unser Ziel ist es, eine allgemeine Methode anzugeben, um die Empfindlichkeit der optimalen Basislösung und anderer Basislösungen durch den Erwartungswert und die Varianz bei gegebener Stichprobe zu testen. Zur Illustration wird eine Zeitreihe der input-output-Koeffizienten einer einzigen Farm benutzt, die drei Getreidesorten erzeugt, wobei drei Ressourcen benützt werden. Es werden die Verteilungen der ersten drei besten Lösungen geschätzt bei vorausgesetzten konstanten Nettopreisen und Ressourcen und stochastischer Koeffizientenmatrix. Die verwendete Methode der statistischen Schätzung ist eine Kombination der Pearsonschen Momentenmethode und der Maximum-Likelihood-Methode. In unserem Beispiel stellen wir fest, daß die Schiefe der Verteilung der besten Lösung größer ist als die der Verteilung der zweit- und drittbesten Lösungen. Ferner wurden die Zeitläufe der ersten drei geordneten Lösungen analysiert, um festzustellen, wie weit sich die Idee eines Regressionsmodells, das auf Ungleichungsrestriktionen basiert, anwenden läßt. Für eine Stichprobe wird ein Empfindlichkeitsindex empfohlen, der sich aus der Spannweite der maximalen und minimalen Werte der Lösungen ableitet.
    Notes: Summary In an ordinary linear programming problem with a given set of statistical data, it is not known generally how reliable is the optimal basic solution. Our object here is to indicate a general method of reliability analysis for testing the sensitivity of the optimal basic solution and other basic solutions, in terms of expectation and variance when sample observations are available. For empirical illustration the time series data on input-output coefficients of a single farm producing three crops with three resources is used. The distributions of the first, second, and third best solutions are estimated assuming the vectors of net prices and resources to be constant and the coefficient matrix to be stochastic. Our method of statistical estimation is a combination of the Pearsonian method of moments and the maximum likelihood method. In our illustrative example we observe that the skewness of the distribution of the first best solution exceeds that of the distributions of the second and third best solution. We have also analyzed the time paths for the three ordered solutions to see how far one could apply the idea of a regression model based on inequality constraints. A sensitivity index for a particular sample is suggested based on the spread of the maximum and minimum values of the solutions.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 11 (1967), S. 1603-1611 
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Graft copolymerization of natural rubber and MMA was carried out in the presence of Bz2O2 or AIBN as thermal initiator and hydrogen peroxide or benzophenone as photosensitizer. From the overall copolymerization product, the rubber-PMMA graft copolymer fraction was isolated from unreacted rubber and free PMMA fractions and composition characterization of the separated fractions was done by determination of rubber unsaturation. The efficiency of grafting under different conditions has been calculated and compared.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 3 (1965), S. 1725-1728 
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: A dye partition method for the determination of hydroxyl endgroups in poly(methyl methacrylate) samples prepared in aqueous media with the use of hydrogen peroxide as the photoinitiator has been described. The dried polymers were treated with chlorosulfonic acid under suitable conditions whereby the hydroxyl endgroups present in them were transformed to sulfate endgroups. Spectrophotometric analysis of sulfate endgroups in the treated polymers was carried out by the application of the dye-partition technique developed for the purpose, and thus a measure of hydroxyl endgroups in the original polymers was obtained. H2O2, in the concentration range of 0.004-0.1M, was found to incorporate an average of nearly 1 OH endgroup per polymer chain.
    Additional Material: 1 Tab.
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  • 10
    Publication Date: 1969-06-20
    Print ISSN: 0031-899X
    Electronic ISSN: 1536-6065
    Topics: Physics
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