نتایج جستجو برای: an increase in ionic strength strongly stimulated b adsorption
تعداد نتایج: 17938347 فیلتر نتایج به سال:
we describe here a suitable approach for the synthesis of n-unsubstituted monocyclic b-lactams under mild reaction conditions by the annelation of imines with substituted acetylchlorides. in this method the reaily available phtalimidoacetyl chloride were allowed to react with - dibenzylideneiminotoluene (hydrobenzamide) in the presence of an equimolar amount of triethylamine in refluxing toluen...
1. evaluate the adsorbability of polar/ionic pesticides and ionic degradates on activated carbon, 2. determine polar/ionic pesticide and ionic degradate breakthrough behavior in granular activated carbon (GAC) adsorbers, 3. develop recommendations for drinking water utilities regarding GAC adsorber design and operation parameters, and 4. evaluate different adsorption test methods in relation to...
Latex immunoagglutination assays continue to be widely used in biology and medicine for the detection of small quantities of an antibody or antigen of interest in fluid test samples. Main characteristics of preparation and use of these assays are examined here. Physical adsorption of proteins onto latex particles surface, with special relevance to immunoglobulins, is analyzed with major attenti...
The effect of pH, ionic strength, and cation in solution on the binding of phenanthrene by a soil humic acid in the aqueous phase was determined using fluorescence quenching. The phenanthrene binding coefficient with the dissolved soil humic, Koc, decreased with increasing ionic strength and solution cation valence. At low values of ionic strength, Koc values for this soil humic acid increased ...
The adsorption of the Alizarin Red S (ARS) and Patent Blue VF (PBVF) from aqueous solution onto agricultural waste mentha has been investigated. The effects of initial dye concentration, contact time, pH, temperature and ionic strength were studied in a batch system. ARS and PBVF adsorption onto mentha increased to minor extent with decreasing pH. Adsorption capacities of dyes increased with co...
let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...
We consider the adsorption of bovine serum albumin (BSA) on spherical polyelectrolyte brushes (SPB). The SPB consist of asolid polystyrene core of 100 nm diameter onto which linear polyelectrolyte chains [poly(acrylic acid), (PAA)] are grafted. The adsorption of BSA is studied at a pH of 6.1 at different concentrations of added salt and buffer. We observe strong adsorption of BSA onto the SPB d...
seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...
We developed a simple and one-step method to prepare biocompatible composites from cellulose (CEL) and chitosan (CS). [BMIm(+)Cl(-)], an ionic liquid (IL), was used as a green solvent to dissolve and prepare the [CEL+CS] composites. Since majority (>88%) of IL used was recovered for reuse by distilling the aqueous washings of [CEL+CS], the method is recyclable. XRD, FTIR, NIR, (13)C CP-MAS-NMR ...
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