In the presence of antidiuretic hormone (ADH), the concentration of the urine is usually related inversely to the excreted osmotic load. When solute excretion is increased by infusion of relatively nonreabsorbable solute, urine concentration falls toward plasma concentration. Maximum urine concentrations are achieved only when solute excretion is very low. In the dog, the highest urine osmolali...

salinization is the main characteristic of soils in arid and semi-arid regions which reduce the agricultural potential ofirrigated lands. therefore, soil reclamation as well as determination of the leaching requirement for salt control is veryimportant for better plant growth. in this study, the effects of leaching on saline soils of sistan region, southeast of iranwere examined using unsaturat...

The physicochemical properties of solute in solutions provide valuable information on solute –solvent, solute – solute and solvent – solvent interactions. The intermolecular forces between theliquids molecules and solvent molecules affect the viscosity of the solution. Information regardinginter and intra molecular interactions can be obtained from volumetric, and viscometric data in asolute so...

Selective extraction of a protein from a mixture can be accomplished using an adsorptive membrane and low displacement recuperative parametric pumping. Low displacement recuperative parametric pumping can lead to the preferential transport of an adsorbing solute and the rejection of nonadsorbing solutes by the adsorptive membrane. Using a protein mixture consisting of lysozyme and myoglobin, we...

Noncontact manipulation of nano/micromaterials presents a great challenge in fields ranging from biotechnology to nanotechnology. In this study we developed a new strategy for the manipulation of molecules and cells based on diffusiophoresis driven by a concentration gradient of a polymer solute. By using laser focusing in a microfluidic device, we created a sharp concentration gradient of poly...

Earlier computations on the work of separation of boundaries with adsorbed solute atmospheres are reconsidered in terms of reversible work cycles. Special attention is given to two limiting cases. These are the separation of a material interface under fully equilibrated conditions, for which the chemical potential of the adsorbed solute remains constant, and separation under constrained conditi...

Recently in this laboratory the conductometric measurement of aqueous solutions Li, Na and K salt L-leucine were studied at different temperature molar concentration to investigate solute-solvent, ion-solvent interactions (solute means drug) also effect dilution was investigated. During work thermodynamic parameters (change free energy, change entropy enthalpy) investigated concentrations range...

Low-solute hyponatremia is a relatively uncommon entity of euvolemic hyponatremia. Classic cases were described in alcoholics as beer potomania, which is characterized by hyponatremia in the setting of low-solute intake due to heavy beer drinking. We report a case of low-solute hyponatremia in a nonalcoholic person who was given a solute load, and, subsequently, had excessive diuresis with the ...

A theoretical and experimental investigation has been conducted to study the untrafiltration of macromolecules through semipermeable membranes. A hydrodynamic model for the convection of rigid spherical solutes through cylindrical pores has been developed to examine the effects of solute concentration and charge on solute rejection by membrane pores. An experimental program to test the theoreti...

In this paper, we studied effect of different parameters including density, viscosity, interfacial tension and solute transfer concentration on phase inversion hold-up. The results showed that change in phase density ratio had no effect on phase inversion hold-up. It also disclosed that the phase viscosity ratio was the most effective parameter affecting phase inversion hold-up and each phase h...