The enthalpy of hydration of peptide groups

1992 ◽  
pp. 1038 ◽  
Author(s):  
Terence H. Lilley
Keyword(s):  
Enthalpy Of Hydration

Semi-empirical Calculations on the Free Energy and Enthalpy of Hydration for the Trivalent Lanthanides and Actinides

1975 ◽  
Vol 53 (18) ◽  
pp. 2695-2700 ◽  
Author(s):  
Saul Goldman ◽  
Lester R. Morss
Keyword(s):  
Free Energy ◽  
Noble Gas ◽  
Hydration Number ◽  
Enthalpy Of Hydration ◽  
Trivalent Lanthanides ◽  
Experimental Enthalpy ◽  
Hydration Model ◽  
Actinide Ions ◽  
Trivalent Actinide ◽  
Enthalpy Data

An electrostatic hydration model, that had previously been developed for ions of the noble–gas structure, was applied to the trivalent lanthanide and trivalent actinide ions. For the trivalent lanthanides it was found that a single primary hydration number resulted in a satisfactory fit of the model to the experimental free energy and enthalpy data. Subsequently, the model was applied to the trivalent actinide ions with a view to predicting values for the free energy and enthalpy of hydration for this series. A primary hydration number for the actinide series was determined by fitting the model to existing experimental enthalpy data for Pu3+. The predictions for this series were found to compare favorably with the few experimental and estimated values that exist.

Enthalpy of hydration of the proton

1963 ◽  
Vol 59 ◽  
pp. 1126 ◽  
Author(s):  
H. F. Halliwell ◽  
S. C. Nyburg
Keyword(s):  
Enthalpy Of Hydration

scholarly journals Extraction of cartilage protein–polysaccharides with inorganic salt solutions

1973 ◽  
Vol 131 (3) ◽  
pp. 535-540 ◽  
Author(s):  
Roger M. Mason ◽  
Robert W. Mayes
Keyword(s):  
Articular Cartilage ◽  
Linear Relationship ◽  
Inorganic Salt ◽  
Elastic Recovery ◽  
Salt Solutions ◽  
Enthalpy Of Hydration ◽  
Nasal Cartilage ◽  
Lanthanide Metals ◽  
High Yields ◽  
Chloride Salts

1. Bovine nasal cartilage was extracted with inorganic salt solutions of various ionic strengths. The efficiency of extraction of protein–polysaccharide from the tissue was determined for each extraction. The results confirm and enlarge earlier observations (Sajdera & Hascall, 1969). 2. The chloride salts of lanthanide metals extract high yields of protein–polysaccharide from the tissue at much lower concentrations than was achieved with univalent and bivalent salts. 3. The lanthanum salt of extracted protein–polysaccharide precipitates when the concentration of LaCl3 is decreased. Precipitation is complete in the presence of 0.05m-LaCl3. This finding is relevant to the interpretation of earlier observations on the effect of LaCl3 on elastic recovery of articular cartilage after compression (Sokoloff, 1963). 4. A linear relationship was found between the concentration at which a particular salt is maximally effective in solubilizing protein–polysaccharide from the tissue and the enthalpy of hydration of the cation of the salt. On the basis of this relationship a hypothesis is proposed to explain the characteristic protein–polysaccharide-extraction profiles exhibited by inorganic salt solutions.

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