degradation of o,o-dimethyl -o-4-nitrophenylphosphorothioate (methylparathion) by ozonation in aqueous solution was studied in a batch reactor under constant ozone dosage and variable ph conditions. the effectiveness of the process was estimated based on the degree of cod (chemical oxygen demand) reduction and conversion of methylparathion. it was observed that ozonation is more effective at al...

s i n c e t h e l a t e 1960s, s e v e r a l c o n s t i t u t i v e m o d e l s h a v e b e e n d e v e l o p e d f o r s a n d s d e s c r i b i n g t h e i r s t r e s s-s t r a i n e h a v i o r. m o s t o f t h e s e m o d e l s w e r e e s t a b l i s h e d b a s e d o n a m e a s u r e o f t h e p l a s t i c w o r k a n d s o m e y i e l d c r i t e r i a, a m o n g t h e m b e i n g t ...

chemokines and their receptors  play an important  role in the  late inflammatory stage of asthma. in this study, we aimed to investigate polymorphisms of mcp-1 (ccl2), ccr2 and ccr5 which can affect qualitatively and/or quantitatively their production and thus influence both susceptibility and severity of asthma and its clinical and biological features. mcp-1   (a/g   -2518),  ccr2   (+/64i), ...

a method for the simultaneous determination of sulfamethoxazole (smx) and trimethoprim (tmp), based on a direct determination of smx after diazotization and coupling with 2-naphthol by visible spectrophotometry and an indirect determination of tmp in the uv region by difference was developed. by the suggested procedure, it was possible to analyze smx and tmp in pharmaceutical preparations witho...

objective(s): 3, 4-methylenedioxymethamphetamine (mdma) one of the methamphetamine derivatives that affect the reproductive system, has not been well understood. many young people are consumers of drugs such as mdma that can affect their reproductive capability. apoptosis is the main mechanism for male infertility. pentoxifylline (ptx) increases camp intracellularly and reduces tumor necrosis f...

t h e s p e c i a l c o n c e n t r i c a l l y b r a c e d f r a m e (s c b f) i s a c o m m o n t y p e o f s t e e l s t r u c t u r a l s y s t e m f o r r e s i s t i n g l a t e r a l l o a d i n g. t h i s t y p e o f s y s t e m p r o v i d e s t h e r e q u i r e d s t i f f n e s s a n d s t r e n g t h a t r e l a t i v e l y l o w c o s t. d e s i g n c o d e s, b a s e d o n p a s ...

A bstract We study the competition between p-wave and p+ip superfluid solutions in a holographic model with applied magnetic field intensity H . find that when is turned on, both grand potential critical temperature of solution are shifted, while only slightly affected. Combining effect back reaction parameter b, we build − T phase diagrams slit region phase. The zero (or finite) value at start...

site-directed mutagenesis (sdm) as a powerful technique was used to change two important and conserved amino acids in 5-enolpyruvylshikimate 3- phosphate synthase (epsps) gene of e. coli. the mutations changed glycine 96 to alanine and alanine 183 to threonine. these two amino acids are very important for intraction of the wide spectrum herbicide, glyphosate, to epsp synthase enzymes. by design...

a new kinetic spectrophotometic method for the determination of trace amount chromium (iii) in teareal samples has been described based on it s the catalytic effect on the oxidations of 1 - ( 2 –pyridylazo ) - 2 - naphthol, (pan), by potassium bromated in sulfuric acid. the reaction is followedspec- trophotometrically by measuring the decrease in the absorbance at 469 nm. under the optimumcondi...