نتایج جستجو برای: mean ionic activity coefficient

تعداد نتایج: 1845649  

Journal: :physical chemistry research 2015
bahram ghalami-choobar parya mossayyebzadeh-shalkoohi

in this paper, the thermodynamic properties of the aqueous mixed electrolyte system containing 1-butyl-3-methylimidazolium chloride ([bmim]cl) and nacl are reported based on the potentiometric method. the potentiometric measurements were performed on the galvanic cells without liquid junction of the type:ag-agcl [bmim]cl (m1), nacl(m2), h2o│il-ise, over total ionic strengths from 0.0025 to 2.00...

Journal: :Far East Journal of Mathematical Sciences (FJMS) 2015

Journal: :The Journal of Physical Chemistry 1980

2016
Andrew J. Bell

The recently proposed Equivalent Dipole Model for describing the electromechanical properties of ionic solids in terms of 3 ions and 2 bonds has been applied to PZT ceramics and lead-free single crystal piezoelectric materials, providing analysis in terms of an effective ionic charge and the asymmetry of the interatomic force constants. For PZT it is shown that, as a function of composition acr...

2000
Per Lyngs Hansen Rudi Podgornik Adrian Parsegian

The osmotic coefficient of B-DNA in water may, in moderately dilute solutions, deviate as much as 100 % from predictions based on a simple ’counterion condensation’ theory. We determine the results for osmotic properties via a cell model description of the ionic atmosphere near a cylindrical polyelectrolyte. The cell model predictions for the osmotic properties disagree with predictions based o...

Journal: :Bioresource technology 2012
Katie S Bowden Andrea Achilli Amy E Childress

This investigation evaluates the use of organic ionic salt solutions as draw solutions for specific use in osmotic membrane bioreactors. Also, this investigation presents a simple method for determining the diffusion coefficient of ionic salt solutions using only a characterized membrane. A selection of organic ionic draw solutions underwent a desktop screening process before being tested in th...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Shenggao Zhou Zhongming Wang Bo Li

Ionic size effects are significant in many biological systems. Mean-field descriptions of such effects can be efficient but also challenging. When ionic sizes are different, explicit formulas in such descriptions are not available for the dependence of the ionic concentrations on the electrostatic potential, that is, there is no explicit Boltzmann-type distributions. This work begins with a var...

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