AIM This study was designed to investigate the bioactive compounds in Costus afer Ker Gawl, an indigenous African medicinal plant whose leaf and stem extracts are used in the treatment of chronic inflammatory diseases, especially rheumatism and arthritis. MATERIALS AND METHODS The bioactive compounds present in the n-butanol fractions of C. afer leaf and stem were identified using qualitative...

A gram-negative aliphatic hydrocarbon-degrading bacterium SJTD-1 isolated from oil-contaminated soil was identified as Pseudomonas aeruginosa by comparative analyses of the 16S rRNA sequence, phenotype, and physiological features. SJTD-1 could efficiently mineralize medium- and long-chain n-alkanes (C12-C30) as its sole carbon source within seven days, showing the most optimal growth on n-hexad...

background : the aim of this study was to evaluate the antimalarial effects of iranian flora artemisia khorassanica against plasmodium berghei in vivo and pharmacochemistry of its natural components. methods : the aerial parts of iranian flora a. khorasanica were collected at flowering stage from khorassan province, northeastern iran in 2008. they were air-dried at room temperature; powder was ...

Water and water-mediated interactions determine the thermodynamics and kinetics of protein folding, protein aggregation and self-assembly in confined spaces. To obtain insights into the role of water in the context of folding problems, we describe computer simulations of a few related model systems. The dynamics of collapse of eicosane shows that upon expulsion of water the linear hydrocarbon c...

The usage of natural convection has many applications for cooling and controlling the temperature electronic components. Therefore, in present simulation, average Nusselt number maximum surface's components are studied by adding nano-emulsion phase change material (NPCM) with water as base fluid. Because, previous studies show that NPCM to a fluid can increase specific heat capacity mixture ord...

Self-metathesis of undecenoic acid with [(PCy3)2Cl2Ru=CHPh] (2), followed by exhaustive hydrogenation yielded pure 1,20-eicosanedioic acid (5) (>99%) free of side-products from isomerization. Polycondensation with eicosane-1,20-diol (6), formed by reduction of the diol, yielded polyester 20,20 (Tm = 108 °C). By comparison, the known ADMET polymerization of undec-10-enyl undec-10-enoate (7), and...

BACKGROUND The aim of this study was to evaluate the antimalarial effects of Iranian flora Artemisia khorassanica against Plasmodium bergheiin vivo and pharmacochemistry of its natural components. METHODS The aerial parts of Iranian flora A. khorasanica were collected at flowering stage from Khorassan Province, northeastern Iran in 2008. They were air-dried at room temperature; powder was mac...

O. majorana shoots were investigated for their essential oil (EO) composition. Two experiments were carried out; the first on hydroponic medium in a culture chamber and the second on inert sand in a greenhouse for 20 days. Plants were cultivated for 17 days in hydroponic medium supplemented with NaCl 100 mmol L⁻¹. The results showed that the O. majorana hydroponic medium offered higher essentia...