(n.) That branch of chemical science which includes the investigation of the various relations existing between chemical action and that manifestation of force termed heat, or the determination of the heat evolved by, or employed in, chemical actions.
Example Sentences:
(1) After investigations by which thermochemistry was founded, respiration could be defined as a slow form of combustion.
(2) The prevalent consensus that the limits are controlled by natural convection is clearly demonstrated, and the complex interplay of kinetics and thermochemistry follows logically therefrom.
Thermodynamics
Definition:
(n.) The science which treats of the mechanical action or relations of heat.
Example Sentences:
(1) From the previously observed results of preferential interactions for salting-out salts with proteins, it was shown that the free energy of the protein is increased by addition of the salts and this unfavorable free energy is smaller for the proteins bound to the columns because of their smaller surface area exposed to solvent; i.e., the bound form of the proteins is thermodynamically more stable.
(2) The viscosimetric and kinetic results are compared with the thermodynamic results obtained from the temperature dependence of the binding constants.
(3) The hypothesis that opiate agonism requires an N substituent in the axial position does not appear to be consistent with the increased potency of beta isomers in which axial N substituents are thermodynamically more unstable.
(4) Cleavage intensities were found to change with time in a manner that depended both on the site and on the drug, suggesting that topoisomerase II can move along the DNA from a kinetically preferred site to a thermodynamically preferred site.
(5) While the thermodynamics for (rGCGAGCG)2 and (rGCAGGCG)2 are similar, CD and the imino region of the proton NMR spectra indicate their structures are different.
(6) The complexes produced by both inhibitors are similar chemically since the thermodynamic parameters for activation to regenerate active enzyme are essentially identical.
(7) The thermodynamic activation energy of this reaction is 67.8 kcal mol-1.
(8) This is consistent with their thermodynamic and kinetic properties, since the H3O+ is often different from the Li+ in several orders of magnitude.
(9) Bounded, bulk, and perfusion-diffusion models are described in supersaturation, statistical, and thermodynamic frameworks.
(10) The effect of changes in the thermodynamic parameters on the equilibrium ensemble provides a further sensitivity check to the predictions.
(11) This is in keeping with thermodynamic principles which apply to chemical and biochemical reactions.
(12) The thermodynamics of this self-association have been evaluated by studying the temperature- and concentration-dependence of the mean residue ellipticity at 220 nm.
(13) This would allow the thermodynamic description of the role of proton translocation as that of a modificatory force of the structural parameters of proteins.
(14) The extrapolated aqueous solubility values in the absence of povidone were obtained as a function of temperature and were utilized to obtain thermodynamic parameters.
(15) Analysis of the thermodynamic parameters for the binding of 18 haptens forms the basis for proposing a model of the binding site of MOPC-104E.
(16) The relationships between thermodynamic quantities in a quaternary system of electrolytes are discussed in Appendix 2.
(17) The key assumptions are (1) that the target site is in the lower epidermis (basal layer) or in the dermis, and (2) that it is the thermodynamic activity (i.e., the free drug concentration, C*, of the active drug species) at the target site that is the true correlate of drug effectiveness.
(18) They also provide electronic and thermodynamic data that are not available from x-ray crystallographic data.
(19) Determination of the thermodynamic parameters from the calorimetric data has required the development of an analytical formalism that explicitly includes the thermodynamics as well as the kinetics of the transition.
(20) Thermodynamics of the enzyme-catalyzed (alkaline phosphatase, EC 3.1.3.1) hydrolysis of glucose 6-phosphate, mannose 6-phosphate, fructose 6-phosphate, ribose 5-phosphate, and ribulose 5-phosphate have been investigated using microcalorimetry and, for the hydrolysis of fructose 6-phosphate, chemical equilibrium measurements.