My purpose in investigating the effect of hemolysis on the accurate assessment of catecholamines and DOPA concentrations by the “Cat-A-Kit” radioenzymic method was to provide a basis for rejecting hemolyzed specimens, and thereby reduce the ever-growing backlog of specimens awaiting analysis in my freezer. I was surprised and disappointed to find that I could not discard hemolyzed samples as be...

a flow injection system is reported for the determination of fluoride based on its effects on the fluorescence intensity of al-morin complex at ph 3.0 in ethanol-warn mixture. the effect of important parameters such as excitation and emission wavelengths, ph, reagents concenkations, flow rate of the carrier stream, sample injection volume, time of measurepent and interferences are reported. cat...

A new approach of image watermarking based on RSA encryption technique for the lossless medical images has been proposed. This paper presents a strategy of attaining maximum embedding capacity in an image in a way that to determine the amount of information to be added in each pixel, maximum possible neighboring pixels are analyzed for their frequencies. The technique provides a seamless insert...

Objective(s):Solid dispersion formulation is the most promising strategy to improve oral bioavailability of poorly water soluble drugs. The aim of this study was to compare the effect of polyvinylpyrrolidone K30 (PVP) and poloxamer-188 (PLX) as carrier in solid dispersion formulations of celecoxib (CLX). Materials and Methods: Solid dispersions of CLX:PVP or CLX:PLX were prepared at different r...

background: salmonella enterica serovar typhi (s. typhi) the cause of the acute febrile disease typhoid fever is the major public health problem in developing countries. asymptomatic carriers are the main sources of typhoid. the aim of this study was to investigate methods for isolation and identification of s. typhi in asymptomatic carriers. materials and methods: two hundred stool samples wer...

hepatitis delta virus (hdv) infection results in more severe and even fulminant form of hepatitis b in co-infected cases. this study was designed to estimate the prevalence of anti-hdv positivity and the associated risk factors in patients with chronic hepatitis b virus infection in zahedan (iran). in this cross-sectional study a total of 440 consecutive patients with chronic hepatitis b virus ...