INTRODUCTION ..................................................................................... 357 ANTIOXIDANT ACTIVITY ....................................................................... 358 Free Radicals and Oxygen." Lipid Peroxidation and Antioxidants ...................... 358 BIOKINETICS AND BIOAVAILABILITY ..................................................... 361 New Methodology: ...

Until 1990 biokinetic studies of aluminium metabolism and biokinetics in man and other animals had been substantially inhibited by analytical and practical difficulties. Of these, the most important are the difficulties in differentiating between administered aluminium and endogenous aluminium-especially in body fluids and excreta and the problems associated with the contamination of samples wi...

UNLABELLED Recent publications described many discrepant findings about thyroid "stunning" after the administration of (131)I diagnostic activities to patients with differentiated thyroid carcinoma. Stunning may play a major role in reducing the therapeutic efficacy of high (131)I activities given for ablation therapy. METHODS Participation in a multicenter study to investigate differences in...

Gold nanoparticles (Au-NPs) have promising potential for diverse biological application, but it has not been completely determined whether Au-NP has potential toxicity in vitro and in vivo. In the present study, toxicity of Au-NP was evaluated in human intestinal cells as well as in rats after 14-day repeated oral administration. Biokinetic study was also performed to assess oral absorption and...

Objectives • Investigate different strategies for selective growth of hydrogen-producing bacteria (e.g., heat selection and pH control, hydraulic loading) in a mixed culture environment. • Determine the biokinetics parameters of hydrogen-producing microorganisms. • Identify and quantify hydrogen-producing bacterial population in a complex microbial community background using nucleic acid based ...

background and purpose: cadmium is hazardous and non-biodegradable material entering the food chain. in this paper, the removal of cadmium from aqueous solutions by sunflower powder (the natural biosorbent) was investigated. materials and methods: the experiments were performed in a batch system. the effect of parameters such as contact time, ph, cadmium concentration and adsorbent dose were ev...