Results 251 to 260 of about 800,251 (299)

Kinetic Measurements for Enzyme Immobilization

2010
Enzyme kinetics is the study of the chemical reactions that are catalyzed by enzymes, with a focus on their reaction rates. The study of an enzyme's kinetics considers the various stages of activity, reveals the catalytic mechanism of the enzyme, correlates its value to assay conditions, and describes how a drug or a poison might inhibit the enzyme ...
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Kinetic and thermodynamic measurements

1997
Abstract This chapter describes the use of high pressures in the elucidation of the reaction mechanisms that govern chemical and biochemical processes near ambient conditions. In general, it is preferable that such investigations do not change the internal properties of molecules, but only perturb the molecules and their interactions by ...
Douglas Magde, Rudi Van Eldik
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Kinetic effects in coercivity measurements

IEEE Transactions on Magnetics, 1981
The coercivity of a magnetic material is a crucial parameter in determining its use in recording. The apparent value of this quantity is found to depend upon the time scale of interest. A method of measurement that observes changes of magnetization on a short time scale will yield a larger coercivity than one that measures changes over a longer time ...
M. Sharrock, J. McKinney
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Kinetic data from DTA measurements

Journal of Thermal Analysis, 1970
The theory of Borchardt and Daniels for the determination from the DTA curve of the fraction decomposed (α) is used. The probable mechanism, activation energy (E) and frequency factor (Z) can be found by the trial and error method from the plot ofα vs.T for a decomposition reaction which can be expressed by the equation $$\log g(\alpha ) = \log p(E ...
F. Škvára, V. Šatava
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Kinetic Measures of Macrophage Chemotaxis

The Journal of Immunology, 2016
Abstract Macrophages are crucial regulators of homeostasis, however, their functions can be compromised, leading to a wide variety of diseases such as diabetes, fibrosis, atherosclerosis and tumor metastasis. Macrophage recruitment by cytokines is an essential step of their function.
Maria Tikhonenko, Lindy O’Clair, Meagan Roddy, Kirk Schroeder, Daniel Appledorn   +4 more
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A proposal for a kinetic summary measure: the Gait Kinetic Index

Computer Methods in Biomechanics and Biomedical Engineering, 2018
A new summary index for kinetic gait data is proposed (Gait Kinetic Index - GKI), BASED on six kinetic selected variables: hip, knee and ankle moments and powers on the sagittal plane. This method was applied on a control group (CG) of 18 subjects and on 57 patients with diplegic Cerebral Palsy (CP).
Cimolin, Veronica, Condoluci, Claudia, Costici, Pier Francesco, Galli, Manuela   +3 more
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Measuring the kinetics of membrane phase transitions

Journal of Biochemical and Biophysical Methods, 1989
This article presents a brief review of literature on the physical chemistry of lipid phase transitions with emphasis on their kinetic properties. The theoretical foundations of perturbation techniques, and specifically the volume-perturbation technique are discussed in some detail.
W W, Van Osdol, R L, Biltonen, M L, Johnson   +2 more
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Measuring cluster temperatures via kinetic-energy release

Physical Review A, 1999
We use photodissociation of neutral sodium clusters to measure the recoil pattern of the fragmentation products. The time dependence of the depletion curves reflects the kinetic-energy release that depends on the internal energy, or the temperature, of the cluster. The fragmentation process is treated parallel to the Weisskopf statistical theory of the
Brockhaus, P., Wong, K., Hansen, Kristian Rymann, Kasperovich, V., Tikhonov, G., Kresin, V.V.   +5 more
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Measurements of Aluminum Oxide Kinetics

1974
Abstract : The AeroChem high-temperature fast-flow reactor has been adapted to allow direct observation of AlO, v = 0 and 1 by laser-induced fluorescence. The rate coefficient k for the homogeneous gas phase reaction AlO + O2 to AlO2 + O has been measured by this technique.
Arthur Fontijn, William Felder
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Pulsed thermo kinetic (PTK) measurements

Journal of Catalysis, 1975
Abstract A novel technique, pulsed thermo kinetics (PTK), for studies in catalysis has been developed. A pulsed microreactor and conventional DTA apparatus were combined to yield stimultaneous thermal and concentration peaks for a pulse of reactant or adsorbate passing over a catalyst.
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