Results 11 to 20 of about 467,855 (300)
Methyl esters selectivity of transesterification reaction with homogenous alkaline catalyst to produce biodiesel in batch, plug flow, and continuous stirred tank reactors [PDF]
, 2014 Selectivity concept is essential in establishing the best operating conditions for attaining maximum production of the desired product. For complex reaction such as biodiesel fuel synthesis, kinetic studies of transesterification reaction have revealed ...
Kamarudin, S. K. +3 more
core +4 more sources
Determination the biochemical kinetics of natural and synthetic estrogens in moving bed Bioreactor
International Journal of Environmental Health Engineering, 2021 Aim: Estrogenic compounds as a group of endocrine disruptive compounds can interfere with endocrine system beings. In the present work, an attempt has been made, to characterize the kinetic coefficients of natural and synthetic estrogens, in a pilot ...
Zeynab Yavari +2 more
doaj +1 more source
On Dielectric Constant and Enzymatic Kinetics [PDF]
The Journal of General Physiology, 1960 The dielectric effects on trypsin and α-chymotrypsin activities have revealed that at pH 7.8 the active species of the former is the cation while that of the latter is the anion. The present study on the dielectric effects along the pH-activity curves shows that trypsin remains positive within the pH range of 5.5 to 8.5.
M. Castañeda-Agulló +1 more
openaire +2 more sources
Gels, 2020 Here we address the problem of what we can expect from investigations of sorption kinetics on cryogel beads in batch. Does macroporosity of beads indeed help eliminate diffusion limitations under static sorption conditions?
Irina Malakhova +3 more
doaj +1 more source
Chemical Equilibrium from the Viewpoint of Mixing Entropy and Some Comments on Equilibrium Constants
Electrochemistry, 2022 Chemical reaction equilibrium was often introduced based on the kinetic assumption called the mass action law. In this paper, problems in the kinetic concept are pointed out and several equilibrium constants are derived on the concept of thermodynamic ...
Masahiro YAMAMOTO, Kenji KANO
doaj +1 more source
Intramolecular dynamics. I. Curvilinear normal modes, local modes, molecular anharmonic Hamiltonian, and application to benzene [PDF]
, 1991 The Hamiltonian based on curvilinear normal modes and local modes (CNLM) is discussed using Wilson's exact vibrational Hamiltonian as basis, the CNLM representation diagonalizing only the normal mode block of FG matrix in curvilinear internal coordinates.
Klippenstein, Stephen J. +2 more
core +1 more source
Pre-big bang model has Planck problem [PDF]
, 1997 The pre-big bang's kinetic driven inflationary mechanism is not an adequate form of inflation: the Planck length grows more rapidly than the scale factor.
Alvarenga F G +19 more
core +3 more sources
Materiales de Construccion, 2005 A kinetic-diffusive model proposed by the authors in previous papers to describe pozzolanic reaction kinetics in sugar cane straw-clay ash (SCSCA)/calcium hydroxide (CH) systems is validated in this study.
E. Villar-Cociña +3 more
doaj +1 more source
Dynamic Effect of NaCl Concentration on Intramuscular Lipid Hydrolysis and Oxidation in Pork
Shipin gongye ke-ji, 2022 To investigate the effects of different NaCl concentration on intramuscular lipid hydrolysis and lipid oxidation in pork processing, 1%, 2%, 3%, 4%, and 5% of NaCl were added to the longsissimus muscles, respectively. Then kinetic changes of triglyceride,
Chunlei PENG +3 more
doaj +1 more source
The units of rate constants in chemical kinetics [PDF]
Accreditation and Quality Assurance, 2022 AbstractThis short article discusses the units of rate constants as used in chemical kinetics and, in particular, the aspect of non-integral powers of base units, which some might find unusual for units in the SI system. In many ways the fact that the units of the rate constants as usually defined convey information about the order of the reaction or ...
Jeremy Frey +5 more
openaire +3 more sources