نتایج جستجو برای: ion specific parameters
تعداد نتایج: 1746173 فیلتر نتایج به سال:
a new category of hybrid organic-inorganic zirconium phosphonate, zr[(o3pch2)2nc6h4co2h].2h2o was synthesized and the applicability of the prepared sorbent as an ion-exchanger for removal of ni2+, cu2+ and zn2+ from aqueous solutions was evaluated. the characterization of the synthesis product was done using tg-dtg, sem, xrd, ft-ir techniques. study of the sorption isotherms and its kinetic par...
spinel-type of mno2 nanoparticles which successfully synthesized by a hydrothermal process, have a required capacity for lithium uptake from liquid resources. themost lithium adsorption capacity of 6.6 mmol/g of up to now was found to be an important limiting parameter for industrial applications. therefore, increasing uptake capacity of these ion sieves by studding the effect of six effective ...
Adsorption and desorption behavior of Gd(III) ionon macroporous weak acid resin (MWAR) had been investigated.The influence of operational conditions such as contact time, initial concentration of Gd(III) ion, initial pH of solution and temperature on the adsorption of Gd(III) ion had been examined. Experimental data were exploited for kinetic and thermodynamic evaluations ...
Site-specific reproducibility and repeatability of electron capture dissociation (ECD) in Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) are of fundamental importance for product ion abundance (PIA)-based peptide and protein structure analysis. However, despite the growing interest in ECD PIA-based applications, these parameters have not yet been investigated in a consi...
We present a critical review on ion-specific effects in foams in the presence of added salts. We show the theoretical basis developed for understanding experimental data in systems with ionic surfactants, as well as the nascent approaches to modeling the much more difficult systems with non-ionic surfactants, starting with the most recent models of the air-water interface. Even in the case of i...
Diffusion coefficient is one of the parameters which can describe the rate of chloride ion diffusion in concrete. This can be obtained by the chloride ion profile. By determining this factor,one can predict when the chloride ion concentration on the reinforcement surface reaches a critical value,and the cover tickness which is needed for preventing corrosion. Time and distance dependency of ...
In this paper, according to the density functional theory and semiharmonic approximation and solving kohen's equations using plane wave, band structure, phonon scattering; Dielectric tensor, Bourne effective charge, Raman cross-section; We calculated the infrared and specific heat capacity of indium phosphide in two-phase structures on zincblend (ZB) and salt rock (Rs). The results show that t...
Residual stress in optical thin film coatings can cause adhesion failures, cracking, buckling, and bending of the substrates. The stress in the coating depends on the materials used, deposition process, and the design. The bulk properties of the coating materials and the substrate such as thermal coefficient of expansion, Young’s Modulus, Poisson’s Ratio, etc., are basic parameters to be consid...
We study a quasi-one-dimensional steady-state Poisson-NernstPlanck model for ionic flows through membrane channels with fixed boundary ion concentrations and electric potentials. We consider two ion species, one positively charged and one negatively charged, and assume zero permanent charge. Bikerman’s local hard-sphere potential is included in the model to account for ion size effects on the i...
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