Results 251 to 260 of about 162,762 (296)

Recent developments in micro solution calorimetry

Thermochimica Acta, 1985
Abstract A group of microcalorimetric vessels primarily designed for the dissolution of slightly soluble compounds in water is described. Gaseous and liquid solutes are-injected into a flow of solvent and the measurements in these cases are automatized by means of microprocessors. The amount of solute used in each experiment is typically 0.4 ml and 0.
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Absorbed dose calorimetry using various aqueous solutions

International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry, 1991
Abstract The relative temperature rise per Gy was measured in a calorimeter for seven dilute aqueous solutions irradiated with 20 MV X-rays. The difference between the measured temperature rise and the rise predicted from complete conversion of absorbed energy into heat depended on the radiation-induced chemical reactions.
Klassen, N., Ross, C. K.
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Enzyme kinetics in crowded solutions from isothermal titration calorimetry

Analytical Biochemistry, 2019
Isothermal titration calorimetry (ITC) is a universal technique that directly measures the heat absorbed or released in a process. ITC is typically used to determine thermodynamic parameters of association of molecules without the need to label them. However, ITC is still rarely applied to study chemical reactions catalyzed by enzymes.
Ksenia, Maximova, Jakub, Wojtczak, Joanna, Trylska   +2 more
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Application of Solution Calorimetry in Pharmaceutical and Biopharmaceutical Research

Current Pharmaceutical Biotechnology, 2005
In solution calorimetry the heat of solution (Delta(sol)H) is recorded as a solute (usually a solid) dissolves in an excess of solvent. Such measurements are valuable during all the phases of pharmaceutical formulation and the number of applications of the technique is growing.
Royall, P G, Gaisford, S
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Thermal Decomposition and Solution Calorimetry of Ammonium Samarium Bromides.

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Oppermann, H., Hennig, C.
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Polymorphic status of sorbitol: solution calorimetry versus DSC

Thermochimica Acta, 1993
Abstract The knowledge of the polymorphic status of sorbitol (C6H14O6: D-glucitol, a sugar substitute) is very important for its use in industrial processes. To investigate this problem we have used differential scanning calorimetry (DSC). The derived enthalpies of fusion of three different sorbitol modifications show noticeable deviations from ...
H.K. Cammenga, I.D. Steppuhn
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Heat exchange calorimetry for estimating heats of solution

Thermochimica Acta, 1985
Abstract A simplified calorimeter has been developed for estimating heats of solution by means of heat exchange calorimetry which was originally proposed by the authors. An analog operational technique is preferred for analyses of thermal phenomena observed in the sample vessel.
Shuko Fujieda, Masaki Nakanishi
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Oxide melt solution calorimetry of rare earth oxides

Journal of Thermal Analysis and Calorimetry, 2002
Key to the evaluation of the long-term durability and reactivity of REE-materials is the accurate determination of their thermodynamic properties. High-temperature oxide melt solution calorimetry offers an effective methodology for the determination of enthalpies of formation for REE-materials.
K. B. Helean, A. Navrotsky
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Calorimetry—an important tool in solution chemistry

Thermochimica Acta, 2004
Abstract Calorimetry belongs to the most important experimental techniques. It is the only experimental method allowing for direct measurements of various physical and chemical processes and reactions. When appropriate model is used, analysis of results on molecular level is possible.
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Differential Calorimetry of Thermally Induced Processes in Solution

Review of Scientific Instruments, 1967
An apparatus for the differential thermal analysis of small (1.7 ml) samples of solutions is described. A heat effect amounting to 50 cal per liter of solution taking place over a 30° temperature interval can be measured with a precision of 5%, and a change in heat capacity of the solution amounting to 2 cal deg−1 per liter of solution can be measured ...
Raymond Danforth, Henry Krakauer, Julian M. Sturtevant   +2 more
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