نتایج جستجو برای: arrhenius activation energy

تعداد نتایج: 1076609  

Journal: :journal of agricultural science and technology 2015
s. ansari n. maftoon-azad a. farahnaky e. hosseini gh. asadi

in this research, rehydration behavior of dried figs was studied at different temperatures (25, 60, 70, 80, and 90°c). the rehydration kinetic was examined using the four most frequently used empirical models, namely, weibull, peleg, first-order, and exponential association models. the weibull model gave the highest coefficient of determination (r2) and the lowest values of root mean square err...

Journal: :The Journal of chemical physics 2009
Akihiro Kushima Xi Lin Ju Li Xiaofeng Qian Jacob Eapen John C Mauro Phong Diep Sidney Yip

A recently developed atomistic method capable of calculating the fragile (non-Arrhenius) temperature behavior of highly viscous liquids is further tested by studying a model of SiO(2), a glass former well known for its Arrhenius temperature behavior (strong). The method predicts an Arrhenius temperature variation, in agreement with experiments, the origin of which is revealed by both quantitati...

2010
Blake Barker Kevin Zumbrun

We carry out a systematic numerical stability analysis of ZND detonations of Majda’s model with Arrhenius-type ignition function, a simplified model for reacting flow, as heat release and activation energy are varied. Our purpose is, first, to answer a question of Majda whether oscillatory instabilities can occur for high activation energies as in the full reacting Euler equations, and, second,...

2009
Richard G. Southwick Justin Reed Christopher Buu Hieu Bui Ross Butler William B. Knowlton

Temperature dependent measurements have been used to examine transport mechanisms and energy band structure in MOS devices. In this study, a comparison between high-k HfO2 dielectrics and conventional SiO2 dielectrics is made to investigate dielectric specific thermally activated mechanisms. Temperature dependent measurements on large area n/pMOSFETs composed of SiO2 and HfO2/SiO2 gate dielectr...

2002
HAROLD K. KIMELBERG DEMETRIOS PAPAHADJOPOULOS

A soluble delipidized (Na + K)-stimulated ATPase was obtained from rabbit kidney outer medulla by the use of sodium deoxycholate. The activity of this enzyme was stimulated ZO-fold to an activity of 100 to 120 pmoles of Pi per mg of protein per hour by either phosphatidylserine or phosphatidylglycerol. The effect of the fluidity of the hydrocarbon region of the phospholipid bilayers on this re-...

Journal: :The Journal of biological chemistry 1974
H K Kimelberg D Papahadjopoulos

A soluble delipidized (Na + K)-stimulated ATPase was obtained from rabbit kidney outer medulla by the use of sodium deoxycholate. The activity of this enzyme was stimulated ZO-fold to an activity of 100 to 120 pmoles of Pi per mg of protein per hour by either phosphatidylserine or phosphatidylglycerol. The effect of the fluidity of the hydrocarbon region of the phospholipid bilayers on this re-...

Journal: :international journal of nano dimension 0
k. khojier department of physics, chalous branch, islamic azad university, chalous, iran. a. behju department of chemistry, chalous branch, islamic azad university, chalous, iran.

this paper addresses the annealing temperature effect on nanostructure and phase transition of copper oxide thin films, deposited by pvd method on glass substrate (at 110 nm thickness) and post annealed at different temperatures (200-400°c) with a flow of 1 cm3s-1 oxygen. the x-ray diffraction (xrd) was employed for crystallographic and phase analyses, while atomic force microscopy (afm) was us...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2001
E Horozova N Dimcheva Z Jordanova

Catalytic activity of catalase (CAT, EC 1.11.1.6), immobilized on carbon black NORIT and soot PM-100, with respect to decomposition of dibenzoyl peroxide (BPO) in non-aqueous media (acetonitrile and tetrachloromethane), was investigated with a quantitative UV-spectrophotometrical approach. Progress of the above reaction was controlled by selected kinetic parameters: the apparent Michaelis const...

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