Hydrophobicity is an important physicochemical property of peptides in solution. As well as being strongly associated with peptide stability and aggregation, hydrophobicity governs the solution based chromatographic separation processes, specifically reversed-phase liquid chromatography (RPLC). In addition, a major comparison to H-bonding, electrostatic, aromatic properties intermolecular inter...

Enzymes adsorbed to ion exchangers are in many cases specifically desorbed by interaction with their ligands. This phenomenon has been variously called ‘specific elution with substrate’ or ‘affinity elution’ in the literature (von der Haar, 1974). Because the most effective ligands for elution are those containing charged groups identical with those on the ion exchanger (positive groups in the ...

Elution and solvation processes in liquid chromatography may be controlled by temperature changes. In the case of solvent adsorption, the temperature influences the amount of adsorbed solvent as well as the enthalpy and entropy of the solvation process. In this work, the thermodynamic parameters of organic solvents used as organic modifiers in the reversed-phase high-performance liquid chromato...

In recent years, there have been many attempts to reuse molten slag. Molten slag is obtained through further treatment of incinerated ash produced in the disposal process of garbage or sewage sludge and is used in building materials, such as brick. To establish the safety of such slag, its physical properties and metal contents were investigated in this study. After examining the physical and c...

Objective: The new Ultra-TechneKowt Dry Ship Top Elute 99mTc generator (UTKt-DTE generator; Mallinckrodt Medical, Inc., St. Louis, MO) was devised to facilitate fractionated elution with an ergonomically designed elution shield. Fractionation is accomplished traditionally by visually observing the eluted volume through 2 layers of leaded glass windows located in a lighted elution shield and gen...

Preconcentration of Cd in water has been carried out using Dowex 50WX2-200 resin as a solid phase extractor. The extraction process was with sonicator. Elution which adsorbed by the released again 1M HNO3, then measured Flame-Atomic Absorption Spectrophotometer. In this study, effects pH, sample solutian sonication time, elution time and eluent volume were studied. results optimization preconce...

Glass ionomer cements (GICs) originally designed for use as dental materials have a number of advantages over acrylic bone cements. These include nonexothermic setting reaction with no thermal damage to surrounding tissues, minimal shrinkage during gelation, the possibility of incorporation drugs and growth factors within the cement and the ability to release fluoride. It is already known that ...

A simplified and efficient method is developed for the large-scale purification of the secoisolariciresinol diglucoside (SDG) from defatted flaxseed after aqueous ethanol extraction. Extractant from defatted flaxseed with aqueous ethanol is hydrolyzed with basic solution, concentrated under vacuum, subjected to Sephadex LH-20 column chromatography, and eluted with aqueous ethanol of different c...