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Digitale Medien

Measurement of Diversity (1949)

SIMPSON, E. H.

[s.l.] : Nature Publishing Group

Nature 163 (1949), S. 688-688

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] THE ‘characteristic’ defined by Yule1 and the ‘index of diversity’ defined by Fisher2 are two measures of the degree of concentration or diversity achieved when the individuals of a population are classified into groups. Both are defined as statistics to be ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/163688a0

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Digitale Medien

Tensile impact properties of thermoplastics (1964)

Simpson, E. H. ; Polleck, R. E.

Stamford, Conn. [u.a.] : Wiley-Blackwell

Polymer Engineering and Science 4 (1964), S. 25-28

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ISSN: 0032-3888

Schlagwort(e): Chemistry ; Chemical Engineering

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: The impact strength of a thermoplastic is shown to be a strong function of several variables. Among these are type of molding, molding conditions, molecular orientation, test temperature, and notches. Particularly significant is a maximum in the response of impact strength to molding temperature. The tensile impact test was used as a tool for these determinations.

Zusätzliches Material: 6 Ill.