euphorbia wallichii a perennial herb growing mainly in himalayas has been widely used in folk medicines for its medicinal properties. in the present study, the crude methanolic root extract (cme) and its fractions; n-hexane fraction (nhf), n-butanol fraction (nbf), chloroform fraction (chf), ethyl acetate fraction (eaf) and aqueous fraction (aqf) of this plant specie were investigated for antio...

     The aim of the present research was to study the effects of weak cation exchange resins, polacrilex with exchangeable H+ and polacrillin potassium and strong cation exchange resin sodium polystyrene sulfonate on water uptake behavior of ranitidine hydrochloride. Drug resin complexes (DRC) were prepared and evaluated for the percentage of moisture gain when placed in a humidity c...

        The crude methanolic extract of the seeds of Celastrus paniculatus along with its organic soluble fractions were tested for their possible antioxidant and anti-alzheirmer (AD) activity. The extracts showed prominent DPPH free radical scavenging activity, inhibiting activity of authentic peroxynitrite (ONOO-) and inhibition of total reactive oxygen species (ROS) generation. In D...

1. An enzyme that methylates magnesium protoporphyrin was detected in extracts of light-grown and dark-grown cells of Euglena gracilis. The activity in light-grown cells is two to three times that in cells grown in the dark. 2. The activity is mainly located in the chloroplast fraction from light-grown cells and in proplastids in dark-grown cells. However, in cells grown either in the light or ...

Column chromatography of the light petroleum fraction from the methanolic extract of the stem bark of Salix tetrasperma Roxb. (Salicaceae) resulted in the isolation of beta-sitosterol acetate, friedelin, 3beta-friedelinol, beta-amyrin, beta-sitosterol, beta-sitosterol-O-glucoside in addition to palmitic acid. From the dichloromethane fraction of the leaves, catechol and tremulacin were isolated...

the presence of tribolium castaneum (herbst) in a stored food results in contamination and substantial economic damage due to loss of the products and a decrease in nutritional value. this study was conducted to determine the pesticidal and pest repellent activities of roots of laportea crenulata gaud. against t. castaneum. pesticidal activity was determined using surface film method, whereas, ...

Cultivating crops influences soil organic matter (SOM), but the effect of different remains unclear, particularly under long-term monocropping. The objective this study was to identify how influence content and chemical structures SOM Here, soils were sampled (0–20 cm) 27-year soybean maize monocropping separated into physical fractions. in all fractions determined. contents higher than bulk ma...

the purpose of the present paper is to develop light beam method to measurement of interfacial area in a rectangular gas-liquid bubble column. total interfacial area can be determined in bubble column filled by transparent liquid by light transmission method. according to pervious researches, the fraction of parallel light is function of interfacial area and optical path length that these two p...