introduction: boron (b) is an essential plant micronutrient whose soil availability is influenced by many soil factors.understanding the processes controling activity of boron (b) in the soil solution is important for soil fertility management. the reaction of adsorption and desorption of boron in soil determines the amount of boron that is available to plants. adsorption–desorption processes p...

Studies have shown that glucose is able to decrease the pH of the surface epithelium jejunal preparations when added in vitro and the existence of a high concentration of protons in the immediate area of the mucosa could be of considerable significance for absorption of electrolytes. The aim of this study is to assess whether the change in pH of Tyrode (solution used for perfusion of the jejunu...

Sterol metabolism studies using a combination of isotopic and chromatographic procedures were carried out in rats fed either a low-cholesterol stock diet or a stock diet containing 0.1% cholesterol. The primary bile acids, sodium taurochenodeoxycholate and sodium taurocholate, were added to the stock diets at a level of 0.5%, as required. Feeding sodium taurochenodeoxycholate and sodium tauroch...

Whole gut perfusion in humans was used to compare the effect on intestinal water and electrolyte transport of the World Health Organisation oral rehydration solution (solution II, composition in mmol/l: glucose 111, sodium 90, bicarbonate 30, potassium 20; 308 mOsm/kg); a hypertonic commercial oral rehydration solution (solution III, glucose 188, sodium 50, bicarbonate 20, potassium 20 mmol/l; ...

This paper presents the experimental results of an on-going research project on geopolymer lightweight concrete using two locally available waste materials--low calcium fly ash (FA) and oil palm shell (OPS)--as the binder and lightweight coarse aggregate, respectively. OPS was pretreated with three different alkaline solutions of sodium hydroxide (NaOH), potassium hydroxide, and sodium silicate...

Advent of pharmacology, combinatorial chemistry and High Through Put Screening offered large number of synthetic drugs as a therapeutic substances. These molecules are potent to elucidate their pharmacological activity. However, pharmacokinetic properties of such molecules are rate limiting factors for its safety as well as efficacy. Most of the synthetic drug available so far in market are eit...

in this study, rice husk and sodium silicate solution were used to produce particleboards. sodium silicate was used as bonding aid by 25, 20, 15, 10, 5 and zero percent (based on rice husk dry weight). to modify the mechanism of bondability, one percent of 4,4’-diphenylmethane diisocyanate (mdi) was added for every five percent less sodium silicate solution. the effect of diisocyanate on bondab...