Results 251 to 260 of about 3,799,045 (306)

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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An Instrument for the Measurement of Rapid Reaction Kinetics

Analytical Biochemistry, 1994
Two versions of an inexpensive mixing device capable of measuring reaction kinetics with millisecond resolution are described. The instruments deliver reactants via microsyringes controlled by nitrogen pressure at time intervals that are either mechanically or software controlled.
J J, McCarthy, S O, Henry, K A, Luckin, N D, Cholewinski, G A, Klug   +4 more
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Measurements of Kinetic Parameters in a Microfluidic Reactor

Analytical Chemistry, 2006
Continuous flow microfluidic reactors that use immobilized components of enzymatic reactions present special challenges in interpretation of kinetic data. This study evaluates the difference between mass-transfer effects and reduced efficiencies of an enzyme reaction.
Matthew B, Kerby, Robert S, Legge, Anubhav, Tripathi   +2 more
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Fluorometric measurement of DNA reassociation kinetics

Analytical Biochemistry, 1979
Abstract A simple, highly sensitive method for assessment of the kinetics of reassociation of DNA has been developed. The method is based on the difference between the intensity of fluorescence of the ethidium bromide complex with single- and double-stranded DNA and requires no preliminary preparative separation of the molecules.
K P, Hanson, N B, Zvonareva, , Ostashevsky YYa, B D, Zhivotovsky   +3 more
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Kinetic texture measurements

Neutron News, 1992
Abstract The great majority of technologically applied materials have a polycrystalline structure. In such materials the texture describes statistically the orientation distribution of the crystallographic axes of the grains (crystallites) with respect to a set macroscopic sample axes-i.e.
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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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Cell kinetic measurements in prostate cancer

International Journal of Radiation Oncology*Biology*Physics, 1997
Two approaches have been suggested for escalating the total dose in radiotherapy treatment of prostate cancer. One is conformal radiotherapy; the other is hyperfractionation using many small fractions. Both imply some possible prolongation in overall treatment time. To judge whether prolonged treatment schedules would be detrimental, it is necessary to
K M, Haustermans, I, Hofland, H, Van Poppel, R, Oyen, W, Van de Voorde, A C, Begg, J F, Fowler   +6 more
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Temperature Jump Measurements in Gas Kinetics

Israel Journal of Chemistry, 1984
AbstractThe temperature jump relaxation method is applied to kinetic measurements in the gas phase. The system N2O4⇄2NO2is studied. Fast T‐jumps are induced by IR absorption from a TEA CO2laser. Temperature jumps of less than 1 K lead to readily detectable concentration changes which are monitored by UV absorption in a simple single shot experiment ...
Gozel, P., Calpini, B., Van den Bergh, H.   +2 more
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Measuring and modelling mechanochemical reaction kinetics

Chemical Communications, 2020
Quasi-static quantum calculations of the mechanochemical decomposition rate of methyl thiolate species on Cu(100) accurately reproduce the experimental kinetics measured in ultrahigh vacuum by an atomic force microscopy tip.
Alejandro Boscoboinik, Dustin Olson, Heather Adams, Nicholas Hopper, Wilfred T. Tysoe   +4 more
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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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