نتایج جستجو برای: variable temperature kinetic

تعداد نتایج: 774975  

Journal: :Astronomy & Astrophysics 2002

2016
DONGFEN BIAN YAO XIAO

This paper is devoted to studying the temperature-dependent incompressible nematic liquid crystal flows in a bounded domain Ω ⊂ R (N = 2, 3). Inspired by Danchin [J. Math. Fluid Mech. 2006], we use a localization argument to recover the maximal regularity of Stokes equation with variable viscosity. Also the results proved by Lei-Li-Zhang [Proc. Amer. Math. Soc. 2014] are generalized to the case...

Journal: :physical chemistry research 2013
ali akbar mirzaei maryam arsalanfar faza ebrahimzadeh hossein atashi sayed hadi mirhoseini moghaddam

the kinetic of fischer-tropsch synthesis over a co-precipitated fe-ce catalyst was investigated in a fixed bed micro reactor. experimental conditions were varied as follow: reaction pressure 1-15bar, h¬¬¬2/co feed ratio of 1-3 and space velocity of 3600-5400 h-1 at the temperature range of 270-310°c. 4 models according to the langmuir-hinshelwood-hougen-watson (lhhw) type rate equation were der...

An efficient design of in situ combustion depends on accurate kinetic modeling of the crude oil oxidation. The kinetic triplet of the oxidation reactions of a heavy oil sample was investigated. Once the kinetic triplet is known, the kinetic equation would be deconvolved. The crude oil sample was obtained from Kuh-E-Mond reservoir, located in the southwest of Iran. The samples were analyzed usin...

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: :Computers & Fluids 2023

A new kinetic model is proposed where the equilibrium distribution with bounded support has a range of velocities about two average in 1D. In 2D, function four velocities, one each quadrant. associated finite volume scheme, are used to enforce Rankine-Hugoniot jump conditions for numerical diffusion at cell-interfaces, thereby capturing steady discontinuities exactly. The variable provide addit...

Journal: :iranian journal of pharmaceutical research 0
hussain khalid school of pharmaceutical science, universiti sains malaysia, pulau pinang-11800, malaysia. university college of pharmacy, university of the punjab, lahore-54000, pakistan. ismail zhari university college of pharmacy, university of the punjab, lahore-54000, pakistan. sadikun amirin university college of pharmacy, university of the punjab, lahore-54000, pakistan. ibrahim pazilah university college of pharmacy, university of the punjab, lahore-54000, pakistan.

the extracts of piper sarmentosum, a medicinal plant, are being used to prepare phytopharmaceuticals while the information about chemical kinetics of constituents of the extract is unavailable to assign precise shelf life (t90) and find optimum storage conditions of the product for patient safety, and to avoid economic repercussions of launching an unstable product. the extract was exposed to t...

Abdul R. Sheik Alafara A. Baba, Folahan A. Adekola Kemi I. Olawale Malay K. Ghosh Tryphena Young

A study of the kinetic analysis of total lead from spent Car battery ash by hydrochloric acidleaching has been examined. The physico-chemical analysis of the ash powder was carried outby the Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and X–ray diffraction (XRD).The effects of the acid concentration, temperature and particle size on the rate of battery ashdissolution have been investi...

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