scholarly journals The vapour pressure depressions of aqueous solutions of phosphate buffer mixtures at 20·3°

1931 ◽  
Vol 25 (1) ◽  
pp. 166-168 ◽  
Author(s):  
Arthur Grollman
1971 ◽  
Vol 24 (4) ◽  
pp. 675 ◽  
Author(s):  
WW Mansfield

The properties of anomalous aqueous condensates, prepared in the manner described by Deryagin,1 vary with aqueous vapour pressure. The changes of column length and of melting point are similar to those of ordinary aqueous solutions. There is no sound evidence that the condensate exhibits abnormal viscosity, density, electrical conductivity, or surface tension.


2012 ◽  
Vol 53 (16) ◽  
pp. 2129-2131 ◽  
Author(s):  
Acharavadee Pansanit ◽  
Nattha Ingavat ◽  
Thammarat Aree ◽  
Chulabhorn Mahidol ◽  
Somsak Ruchirawat ◽  
...  

1966 ◽  
Vol 12 (2) ◽  
pp. 221-230 ◽  
Author(s):  
E. A. Peterson ◽  
D. C. Gillespie ◽  
F. D. Cook

A soil-borne myxobacter identified as a species of Sorangium produced a potent antibiotic capable of inhibiting growth of a wide variety of microorganisms including Gram-positive and Gram-negative bacteria, fungi, actinomycetes, and yeasts. The active material was readily isolated from culture fluids of the organism by ether extraction or by adsorption on a resin. A high degree of purity was achieved chromatographically. Acetone, methanol, or aqueous solutions of the antibiotic were stable when stored at low temperature (4 °C). At 70 °C it was unstable in phosphate buffer but retained its activity in iris buffer at neutral and alkaline pH.


1912 ◽  
Vol 8 (October) ◽  
pp. 68 ◽  
Author(s):  
Edgar Philip Perman ◽  
Tudor Williams Price

This investigation was undertaken in the first instance in order to complete the data available for the accurate calculation of osmotic pressures from measurements of vapour-pressure. In addition to this, it was hoped by the study of the results obtained, especially the effect of adding various electrolytes and non-electrolytes to water, to obtain further insight into the nature of solutions in general. The chief work on the compressibility of solutions is that of Röntgen and Schneider, and Berkeley, Hartley and Burton. The latter determined the compressibility of aqueous solutions of calcium ferrocyanide, and later studied solutions of cane sugar and methyl glucoside at 0°C. and 30°C.


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