introduction: sudden sensorineural hearing-loss (ssnhl) patients constitute approximately 2–3% of referrals to ear, nose and throat (ent) clinics. several predisposing factors have been proposed for this condition; one of which is vascular disorders and perfusion compromise. in this research the atherosclerotic changes and their known risk factors are studied in ssnhl patients.   materials and ...

p-dodecylbenzenesulfonic acid (dbsa) was used as a catalyst for a simple and efficient one-pot synthesis of aryl substititued tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromens via initial knoevenagel, subsequent micheal and final heterocyclization reactions of aryl aldehyde, malononitrile and 4-hydroxycoumarin/dimedone in moderate to excellent yields. the present method was operationally si...

It is somewhat ironic that although youth today are saturated in media, no standardized instrument exists to measure individual differences in exposure to specific media content. Therefore, we developed and validated a scale to measure both the frequency and content of adolescents’ media exposure, which measures media exposure regardless of media channel: the Content-based Media Exposure Scale ...

Thirteen species of Streptomycetes, Arthrobacters and Mycobacterium were studied for the determination of a potential cholesterol oxidase producer. Only Streptomyces fradiae and Streptomyces rishiriences were found to be capable of producing this enzyme. Streptomyces fradiae was selected for the production of cholesterol oxidase and cultured in different media to find optimum media and con...

The prtnonation constant values of tryptophan were studied at 25 C. different ionic strengths. 0.1-1.0 moldm", and various ionic media of NaCIO, and N4N01, using a combination of spectrophotometrie andpotentiometric techniques. The general vend for the two protonation con Slant Vai net of tryptophan is in theorder of NaC104 > NaNO3 in different ionic media. The dependence of protonation constan...

background patients with systemic lupus erythematous (sle) are more prone to atherosclerosis and cardiovascular diseases due to atherosclerosis and consequently death. objectives the aim of this study was to explore a possible relationship between the intima media thickness (imt) of carotid arteries and the levels of c-reactive protein (crp) in sle patients. patients and methods: sixty sle pati...