Abstract: Selenium (Se) is considered an essential trace element, it plays a role in thyroid function and your immune system which needs Se to work properly. Se is widely distributed in the environment, so the quantifying Se in the environmental samples are very important and essential to study transferring factor. The advantage of coincidence method is abilities of background reduction and removal of interference evaluated for the analysis of geological samples [1]. In this paper, we would like to present determination of the results of Se in environmental sample by neutron activation analysis combined with the gamma-gamma coincidence method. By application of this method, the peak to background ratios, detection limits of Se in environmental samples were improved and concentration of Se in sample was determined.

• Publication Date: 12-Apr-2015
• DOI: 10.15224/978-1-63248-055-2-14
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Abstract: The present study was done to find out the incidence of the intestinal parasites and their prevalence among male, female and children of the outdoor patients of IBN sina hospital, Dhanmondi, Dhaka. A total of 350 stool samples were collected from different aged patients and examined from IBN Sina hospital. Four species of intestinal parasites were identified, of which two species were protozoa (Entamoeba histolytica and Giardia sp.) and two species were nematode (Ascaris lumbricoides and Trichuris trichuira). The overall prevalence of infestation was 24.28%; Entamoeba histolytica 4.85%, Giardia sp 2.28%, Ascaris lumbricoides 4.28% and Trichuris trichuira 12.85%. The highest prevalence (28%) prevalence was observed in male patients, lowest in 22.5% in female and 24% in children. The prevalence was highest (29.52%) in rainy season and lowest (21.05%) in winter season. The prevalence was highest (41.66%) in male during the month of April’10. The highest prevalence was found in 26- 35 year

• Publication Date: 12-Apr-2015
• DOI: 10.15224/978-1-63248-055-2-15
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