نتایج جستجو برای: electrolyte composition
تعداد نتایج: 285055 فیلتر نتایج به سال:
Small neutral organic compounds have traditionally the role of markers in electrophoresis, as they are expected to have zero electrophoretic mobility in external electric fields. The background electrolyte contains, however, ions which have unequal affinities to the neutral molecules, which in turn results in their mobilization. In this study we focused on two electrophoretic markers thiourea a...
Co-mixed cellulose acetate butyrate and permutit in a definite composition was prepared and coded as MRS-2.The membrane potential was measured with uni-uni valent electrolyte, NaCl solutions using saturated calomel electrodes (SCEs).The effective fixed charge density of the membrane was determined by TMS method and it showed dependence on the porosity, charge on the membrane matrix, charge and ...
The description of the clinical course of Ebola virus disease (EVD) provided by Igonoh is consistent with mounting evidence indicating that a significant proportion of Ebola mortality is attributable to diarrheal dehydration with severe electrolyte losses. It is likely that EVD mortality could be reduced below reported levels if therapy could be streamlined as it has been for treatment of chole...
Butorphanol tartrate is a synthetic opioid agonist-antagonist used as analgesic, possessing three chiral centres in the basic part of the molecule. Its chiral purity is routinely controlled only by optical rotation. A new capillary zone electrophoresis method, capable to separate the enantiomers of butorphanol and intermediate of its synthesis, cycloamine, was developed. Different electrolyte c...
This work presents the investigation of various capillary electrophoretic techniques for the Separation of low-molecular-weight phenolic and neutral lignin degradation products. A successful CE mode was micellar electrlokinetic chromatography (MEKC) with carrier electrolytes containing micelleformi:ng reagents, such as sodium dodecylsulfate. Important phenolic and neutr;al lignin degradation co...
The physiological adjustments of man to high environmental temperatures have been studied extensively in the adult. However, the influence of environmental temperature on the water and electrolyte balance of infants has not been adequately determined. This paper reports the changes in the distribution of body water and electrolyte which occurred in infants exposed to heat stress. Accurate balan...
The cadmium chalcogenides CdSexTe1-x ( 1 x 0 ≤ ≤ ) thin films have been electrodeposited onto ITO coated glass substrates from an acid sulfate solution at 90 °C. The structure, the composition and the morphology have been studied as a function of the x coefficient by XRD, EDAX, optical absorbance and AFM techniques. All deposits have a cubic structure with a preferred orientation along the (111...
Mixture experimental design was used to enhance the separation selectivity of metal ions in nonaqueous capillary electrophoresis. The separation of cations (Ag, Fe, Cr, Mn, Cd, Co, Pb, Ni, Zn and Cu) was achieved using imidazole as UV co-ion for indirect detection. Acetic acid was chosen as an electrolyte because its cathodic electroosmotic flow permits faster separation. The composition of org...
In several previous experiments to determine the composition of interstitial fluid, the results varied depending on the collecting technique, and the electrolyte concentrations differed from those of a hypothetical ultrafiltrate of plasma. In our approach, since a change of position from standing to supine is accompanied by hemodilution with interstitial fluid, we used the changes in hematocrit...
plasma electrolytic oxidation (peo) was performed on a 1010 aluminum alloy. to achieve thenanocomposite structure, si3n4 nanoparticles were added into the electrolyte. in an alkaline aqueoussuspension (silicate-based), the effect of adding niso4 on the applied voltage, microstructure,composition, wear, and corrosion resistance of peo coatings was investigated using scanningelectron microscopy (...
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