scholarly journals An estimate of the enthalpic contribution to the interaction between dextran and albumin

1978 ◽  
Vol 175 (2) ◽  
pp. 703-708 ◽  
Author(s):  
W D Comper ◽  
T C Laurent
Keyword(s):  
Aqueous Solution ◽  
Light Scattering ◽  
Temperature Dependence ◽  
Qualitative Agreement ◽  
Interaction Coefficient ◽  
Enthalpy Of Dilution ◽  
Scattering Data ◽  
Temperature Range ◽  
Considerable Error

It is demonstrated that exclusion phenomena appear to dominate the interaction of dextran with albumin in aqueous solution. The enthalpic contribution to the interaction coefficient describing dextran/albumin mixtures is small, although its determination was subject to considerable error. These results support the earlier assumptions of the type of interaction between the two polymers. The conclusions are primarily based on the interpretation of the temperature-dependence of the interaction coefficient, as measured by light-scattering in the temperature range 6–33 degrees C. Enthalpy of dilution measurements of dextran/albumin mixtures by microcalorimetry were in qualitative agreement with the light-scattering data.

Thermal Anomaly in the Temperature Dependence of the Energy–Volume Coefficient of Aqueous KCl Solutions

1973 ◽  
Vol 51 (12) ◽  
pp. 1885-1888 ◽  
Author(s):  
Ikchoon Lee ◽  
J. B. Hyne
Keyword(s):  
Aqueous Solution ◽  
Temperature Dependence ◽  
Potassium Chloride ◽  
Direct Measurement ◽  
Pure Water ◽  
Pressure Coefficient ◽  
Thermal Anomaly ◽  
Thermal Pressure ◽  
Temperature Range ◽  
Volume Coefficient

The temperature dependence of the energy–volume coefficient of pure water and of aqueous potassium chloride solutions as a function of concentration over the temperature range 10–50 °C has been determined by direct measurement of constant volume thermal–pressure coefficient. The results show that a thermal anomaly exists in the energy–volume coefficient of aqueous solution in the temperature range 30–40 °C and becomes more pronounced as the concentration of solute is increased.

Temperature dependence of the shape of the cellodextrins in aqueous solution

1967 ◽  
Vol 45 (20) ◽  
pp. 2363-2367 ◽  
Author(s):  
M. Ihnat ◽  
D. A. I. Goring
Keyword(s):  
Aqueous Solution ◽  
Temperature Dependence ◽  
Computational Methods ◽  
Negative Temperature ◽  
Temperature Range ◽  
Temperature Coefficients ◽  
Increasing Temperature

Intrinsic viscosities of the cellodextrins, cellobiose to cellohexaose, were measured in aqueous solution at temperatures from 25 to 70 °C. Axial ratios were determined using the Einstein–Simha viscosity relation and the computational methods developed previously. The results showed that the oligomers are fully extended over this temperature range and that the negative temperature coefficients of the intrinsic viscosities are caused by the dehydration of the molecules with increasing temperature.

Temperature Dependence of the Diffusion of Carbon Tetrachloride, Chloroform, and Methylene Chloride Vapors in Air by a Rate of Evaporation Method

1971 ◽  
Vol 49 (1) ◽  
pp. 67-73 ◽  
Author(s):  
Harry Watts
Keyword(s):  
Carbon Tetrachloride ◽  
Temperature Dependence ◽  
Diffusion Coefficients ◽  
Room Temperature ◽  
Methylene Chloride ◽  
Evaporation Method ◽  
Temperature Range ◽  
Considerable Error ◽  
Boiling Points ◽  
Rate Of Evaporation

The diffusion coefficients in air of carbon tetrachloride, chloroform, and methylene chloride have been measured over a temperature range from room temperature to close to their boiling points by a modified rate of evaporation method. It was shown that considerable error can occur in diffusion coefficients determined by the rate of evaporation method when gas imperfections are ignored.

Specific features of the temperature dependence of tryptophan fluorescence lifetime in the temperature range of −170–20 °C

2020 ◽  
Vol 393 ◽  
pp. 112435
Author(s):  
Peter P. Knox ◽  
Vladimir V. Gorokhov ◽  
Boris N. Korvatovsky ◽  
Nadezhda P. Grishanova ◽  
Sergey N. Goryachev ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Fluorescence Lifetime ◽  
Tryptophan Fluorescence ◽  
Temperature Range

The decomposition mechanism for TDO in aqueous solution within 25–95 °C temperature range

2019 ◽  
Vol 731 ◽  
pp. 136603
Author(s):  
Jianzhong Shao ◽  
Xiaoyun Liu ◽  
Sergei V. Makarov ◽  
Kemei Pei
Keyword(s):  
Aqueous Solution ◽  
Decomposition Mechanism ◽  
Temperature Range

Temperature dependence of chlorine-35 N.Q.R. in 2,6-Dichlorophenol

1978 ◽  
Vol 31 (4) ◽  
pp. 791 ◽  
Author(s):  
R Chandramani ◽  
SP Basavaraju ◽  
N Devaraj
Keyword(s):  
Temperature Dependence ◽  
Room Temperature ◽  
Temperature Range ◽  
Temperature Coefficients ◽  
Brown's Method

Chlorine n.q.r, in 2,6-dichlorophenol has been investigated at temperatures from 77 K to room temperature. Two resonance lines due to chemically inequivalent sites have been observed throughout this temperature range. Torsional frequencies of the molecule have been calculated at temperatures from 77 to 300 K according to Bayer's theory and Brown's method. Also the temperature coefficients of the torsional frequencies have been calculated.

Universality of fractal aggregates as probed by light scattering

1989 ◽  
Vol 423 (1864) ◽  
pp. 71-87 ◽  
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Master Curve ◽  
Rotational Diffusion ◽  
Fractal Dimensions ◽  
Scattering Data ◽  
Diffusion Limited ◽  
Single Master Curve ◽  
Using Data ◽  
Dynamic Light Scattering Data

Fractal colloid aggregates are studied with both static and dynamic light scattering. The dynamic light scattering data are scaled onto a single master curve, whose shape is sensitive to the structure of the aggregates and their mass distribution. By using the structure factor determined from computer-simulated aggregates, and including the effects of rotational diffusion, we predict the shape of the master curve for different cluster distributions. Excellent agreement is found between our predictions and the data for the two limiting régimes, diffusion-limited and reaction-limited colloid aggregation. Furthermore, using data from several completely different colloids, we find that the shapes of the master curves are identical for each régime. In addition, the cluster fractal dimensions and the aggregation kinetics are identical in each régime. This provides convincing experimental evidence of the universality of these two régimes of colloid aggregation.

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