نتایج جستجو برای: adsorption equations

تعداد نتایج: 292522  

2007
ROBERT S. HANSEN K. G. BAIKERIKAR

Evaluation of a surface equation of state generally involves an evaluation of its ability to represent raw experimental data, or information derived from such data, after the parameters of the equation have been adjusted to optimize this representation, followed by an evaluation of the physical reasonableness of the optimizing parameters in terms of the physical model on which the equation of s...

Journal: :Biomicrofluidics 2011
Lei Huang Zhixiong Guo

Label-free detection of biomolecules using an optical whispering-gallery mode sensor in a microelectrofluidic channel is simulated. Negatively charged bovine serum albumin is considered as the model protein analyte. The analyte transport in aqueous solution is controlled by an externally applied electrical field. The finite element method is employed for solving the equations of the charged spe...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
Achilleas Lazarides

A procedure suggested by Vvedensky for obtaining continuum equations as the coarse-grained limit of discrete models is applied to the restricted solid-on-solid model with both adsorption and desorption. Using an expansion of the master equation, discrete Langevin equations are derived; these agree quantitatively with direct simulation of the model. From these, a continuum differential equation ...

Journal: :Entropy 2004
Rudolf N. Kuklin

The thermodynamic stability limits of specific adsorption at the polarized liquid metal/ electrolyte solution interface are studied. Here the reversible starting and disappearance of the electroadsorption effects at a threshold potential are revealed, which are the result of Gibbs stability violation. The stability limits are determined by the bifurcation manifold of the critical states for whi...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1996
Head Rodgers

We study the effects of generalised surface disorder on the mon-omer-monomer model of heterogeneous catalysis, where disorder is implemented by allowing different adsorption rates for each lattice site. By mapping the system in the reaction-controlled limit onto a kinetic Ising model, we derive the rate equations for the one and two-spin correlation functions. There is good agreement between th...

2003
Alexander V Neimark Peter I Ravikovitch Aleksey Vishnyakov

With the example of the capillary condensation of Lennard-Jones fluid in nanopores ranging from 1 to 10 nm, we show that the non-local density functional theory (NLDFT) with properly chosen parameters of intermolecular interactions bridges the scale gap from molecular simulations to macroscopic thermodynamics. On the one hand, NLDFT correctly approximates the results of Monte Carlo simulations ...

Journal: :Analytical chemistry 2011
Aaron R Halpern Yulin Chen Robert M Corn Donghyun Kim

The optical technique of surface plasmon resonance phase imaging (SPR-PI) is implemented in a linear microarray format for real-time measurements of surface bioaffinity adsorption processes. SPR-PI measures the phase shift of p-polarized light incident at the SPR angle reflected from a gold thin film in an ATR Kretschmann geometry by creating an interference fringe image on the interface with a...

1999
Da-Wen Sun

Wheat, shelled corn and rice are the most popular grown cereal grains and rapeseed (canola) is the most popular grown oilseed in the world. Thorough literature surveys reveal that a large number of publications contain EMC/ERH data for these grains and oilseed. From these publications, experimental data points are extracted, forming data sub-sets suitable for evaluating the isotherm equations. ...

Journal: :Annals of the New York Academy of Sciences 2002
Onofrio Annunziata John G Albright

Equations are presented that model diffusion of a protein to the surface of a growing crystal in a convection-free environment. The equations apply to crystal growth solutions that contain both a protein and a protein precipitant. The solutions are assumed ternary and the equations include all four diffusion coefficients necessary for the full description of the diffusion process. The four diff...

ژورنال: علوم آب و خاک 2018
حجتی, سعید, رحیمی, طیبه, معزی, عبدالامیر,

Biochar is a soil amendment that has a high capacity to adsorb heavy metals. The aim of this study was to identify the influence of cow manure and its biochar on nickel adsorption and to determine the best models to describe the kinetics of Ni retention. Accordingly, cow manure and its biochar were added to the soils at the levels of 0, 2 and 4%, and samples were incubated for 90 days. Soil sam...

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