Searched for: author%3A%22Staverman%2C+A.J.%22
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Staverman, A.J. (author), Centraal Laboratorium TNO (author)
In 1933 Ehren/est defined transitions in which not only the thermodynamical potential but also the specific volume and entropy of the two states are equal. For these transitions he derived three relations, between the differences of the coefficients of dilatation and of compressibility and the specific heat on one hand and the slope of the...
article 1966
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Centraal laboratorium TNO (author), Staverman, A.J. (author)
article 1966
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Centraal Laboratorium TNO (author), Staverman, A.J. (author), Kruissink, C.A. (author), Pals, D.T.F. (author)
An explanation of the anomalous osmosis described in the preceding paper is given in terms of friction coefficients in the glass membrane. It is shown that anomalous osmosis may be expected when the friction coefficients are constant and positive provided that the membrane absorbs solute strongly and the outside concentration of solute is small....
article 1965
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Centraal laboratorium TNO (author), Talen, J.L. (author), Staverman, A.J. (author)
The reflection coefficient of porous Vycor glass towards aqueous solutions of polyethylene glycol, measured by ultrafiltration, has negative values at lower polymer concentrations. This is in qualitative agreement with the abnormally low and negative values of the apparent osmotic pressure found by Elias for such systems. This work gives an...
article 1965
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Centraal laboratorium TNO (author), Talen, J.L. (author), Staverman, A.J. (author)
According to theoretical considerations of Staverman the molecular weight of a substance can be determined by means of osmometry even when the membrane is permeable to the solute of which the molecular weight must be determined. In this case the reflection coefficient of the membrane for the solute must be determined separately. The feasibility...
article 1965
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Staverman, A.J. (author), Centraal laboratorium TNO (author)
conference paper 1964
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Petri, E.M. (author), Staverman, A.J. (author), Pals, D.T.F. (author), Centraal Laboratorium TNO (author)
article 1955
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van Velden, P.F. (author), van der Want, G.M. (author), Heikens, D. (author), Kruissink, C.A. (author), Hermans, P.H. (author), Staverman, A.J. (author), Centraal laboratorium TNO (author)
article 1955
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Kunstoffen en Rubber Instituut TNO (author), Staverman, A.J. (author)
article 1953
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Kunststoffeninstituut TNO (author), van der Want, G.M. (author), Staverman, A.J. (author)
The synthesis of N‐(ϵ‐aminocaproy L‐) ϵ‐aminocaproic acid. „Di‐ϵ‐aminocaproic acid”. The possibility of synthesizing ω‐peptides by condensation of a ω‐phthalimido acid chloride with a ω‐amino acid and subsequent treatment with hydrazine has been investigated. The synthesis of N‐(ϵ‐aminocaproyl‐) ϵ‐aminocaproic acid is described.
article 1952
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Kunstoffen en Rubber Instituut TNO (author), Schwarzl, F. (author), Staverman, A.J. (author)
article 1952
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Kunstoffen en Rubber Instituut TNO (author), Staverman, A.J. (author)
article 1952
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Kunstoffeninstituuut TNO (author), Schwarzl, F. (author), Staverman, A.J. (author)
The question is treated whether in the study of linear visco-elastic behavior of a material change of temperature is completely equivalent to a shift of the logarithmic time scale or not. If it is, the material is termed "thermo-rheologically simple" (class A). It is shown that, by plotting the results of a similar rheological experiment (for...
article 1952
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Kunstoffen en Rubber Instituut TNO (author), Staverman, A.J. (author)
By applying the theory of non-equilibrium thermodynamics to membrane processes it is found that the action of a membrane in a system containing n components is completely characterized by 1/2n(n + 1) thermodynamical constants. In measurements of transference numbers, membrane potentials and electrokinetic constants, a set of phenomenological...
article 1952
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Kunstoffen en Rubber Instituut TNO (author), Staverman, A.J. (author)
article 1952
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Kunststoffeninstituut TNO (author), Staverman, A.J. (author)
Application of Onsager's symmetry relations to the process of diffusion of a solution through a membrane shows that measured osmotic pressures deviate from those calculated thermodynamically in proportion to the permeability of the membrane to the solute molecules. Therefore little is learned from one dynamic osmotic measurement but by...
article 1951
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Kunststoffeninstituut TNO (author), Staverman, A.J (author)
article 1951
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Kunststoffeninstituut TNO (author), Heyboer, J. (author), Staverman, A.J. (author)
The following substances, not yet described in the literature, were prepared: N‐tert‐butyl methacrylamide, m.p. 59° C, b.p. 111°° C/42 mm. tert‐butyl methacrylate, b.p. 136° C, fr.p. −48° C. N‐methacrylyl‐benzenesulphonamide, m.p. 128–129° C. N‐methacrylyl‐p‐toluenesulphonamide, m.p. 153–154° C. An improved method of preparation for methacrylic...
article 1950
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Kunststoffeninstituut TNO (author), Staverman, A.J. (author)
The theory of Huggins is extended so as to include application to molecules containing rings and crosslinks. At the same time the definition of Guggenheim's parameter q is slightly revised in such a way that also back bending of flexible and particularly of branched molecules is accounted for as ring formation. It is shown that Huggins' and...
article 1950
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Kunstoffen en Rubber Instituut TNO (author), Staverman, A.J. (author)
article 1948
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