نتایج جستجو برای: reactant concentration

تعداد نتایج: 383815  

2002
Jie ZHANG Patrick R. UNWIN

The basic experimental setup and theory of microelectrochemical measurements at expanding droplets (MEMED) is described. A key strength of MEMED is that it can be used to sensitively probe reactive fluxes of spontaneous reactions at liquid/liquid interfaces, by directly measuring the concentration profiles of both reactant and product. This capability of MEMED is demonstrated via a model system...

2010
Monica Roman Eugen Bobasu Eugen Iancu Dorin Sendrescu

The paper presents an approach of the Bond Graph modelling applied to thermo-chemical processes. The proposed work focused on combustion process kinetics with respect to reactant and reactor input data. The model provides information on the time variation of the heat of reaction, reaction products concentration, and reactants concentration / accumulation, based on global mass and energy balance...

2002
Matthias K. Gobbert Vinay Prasad Timothy S. Cale

We present a transient Boltzmann equation based transport and reaction model for atomic layer deposition ~ALD! at the feature scale. The transport model has no adjustable parameters. In this article, we focus on the reaction step and the postreaction purge steps of ALD. The heterogeneous chemistry model consists of reversible adsorption of a reactant on a single site, and irreversible reaction ...

Journal: :American journal of physiology. Renal physiology 2009
Minhtri K Nguyen Liyo Kao Ira Kurtz

Upon the addition of protons to an aqueous solution containing multiple buffers, the final H+ concentration ([H+]) at equilibrium is determined by the partitioning of added H+ among the various buffer components. In the analysis of acid-base chemistry, the Henderson-Hasselbalch equation and the Stewart strong ion formulation can only describe (rather than predict) the equilibrium pH following a...

2011
A. Parmigiani C. Huber O. Bachmann B. Chopard

Reactive processes associated with multiphase flows play a significant role in mass transport in unsaturated porous media. For example, the effect of reactions on the solid matrix can affect the formation and stability of fingering instabilities associated with the invasion of a buoyant non-wetting fluid. In this study, we focus on the formation and stability of capillary channels of a buoyant ...

Journal: :Physical chemistry chemical physics : PCCP 2015
Kathleen A Schwarz Ravishankar Sundararaman Thomas P Moffat Thomas C Allison

The oxidation of small organic acids on noble metal surfaces under electrocatalytic conditions is important for the operation of fuel cells and is of scientific interest, but the basic reaction mechanisms continue to be a matter of debate. Formic acid oxidation on platinum is one of the simplest of these reactions, yet even this model system remains poorly understood. Historically, proposed mec...

Journal: :Progress in Aerospace Sciences 2010

Journal: :Pure and Applied Chemistry 1992

Journal: :Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 1997

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