2022 Impact Factor: 1.4
2022 CiteScore: 2.2
pISSN: 2251-6085
eISSN: 2251-6093
Chairman & Editor-in-Chief:
Dariush D. Farhud, MD, Ph.D., MG.
This journal is a member of, and subscribes to the principles of, the Committee on Publication Ethics (COPE). 
Vol 25 No 3-4 (1996)
Articles
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This Research was conducted in continuous flow bench scale Fixed Activated sludge (FAS) and Anaerobic Filter (AF). The main objective of the research was to study the feasibility and efficiency of the mentioned systems for Cr (VI) removal. In Fas reactor, Cr (VI) was adsorbed from influent to MLSS in the range of 89 to 99 percent and the adsorption followed freundlich isotherm. In AF reactor, Cr (VI) was reduced to Cr(III). The reduction rate in these parts was from 81 to 99 percent.
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THE EXPERIMENTAL INFECTION OF NECATOR AMERICANUS (HOOK WORM) IN GOLDEN HAMSTER, MESOCRICETUS AURATUSHook worm (Necator americanus) is one of the major pathogenic parasites in the north of Iran. Neonatal hamsters 1-3 days old showed a high degree of susceptibility to Necator americanus infection and the parasite reached to sexually mature stages in six weeks following skin exposure. This method could be used for production of egg, larvae and adult worms. In this study neonatal hamsters were infected each with 70 third – stage larvae percutaneously and 50% of larvae were developed to sexual maturity.
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Crown to heel, crown to rump, weight, gead circumference of normal newborns (m=792) were measured in a hospital in Hamadan, Iran during two months, in spring, 1995. The mean C.H. for males was 48.2 cm. and for females 47.5 cm. ; the mean C.R. for males was 33.3 cm and for females 32.73 cm.; the mean weight for males was 3.30 kg and for females 2.29 kg and finally the mean head circumference for males was 35.24 cm. and for females 34.73 cm. Data show the sizes in a sample of Hamadanian normal newborns. In most of them skewness tended to minimum (negative skewness). Finally the boys and girls were compared statistically according to sizes which were obtained. The results were significant (p=0.01).
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This study has been conducted in the slaughter- house of the city of Kerman, for one year, starting March 1993. A total number of 16402 livestocks including 5013 sheep, 8163 goats and 3226 cattle were examined in a regular manner, 120 days, with a mean of 30 days per season. After recording the king, sex and origin of each animal, liver and lungs were examined carefully for hydatid cyst. In general, the infection rate was 7.6% with 9.2%, 6.8% and 7.2% in sheep, goats and cattle, respectively. Although the prevalence rate was slightly variable, but there was no significant difference between the infection in spring and fall; summer and winter, and winter and fall. On the contrary, the difference between the infection rate in spring and summer and spring and winter was significant. Hydatidosis in females was much higher than the males and this difference was significant in both sexes of each kind of animals. Also, the mean infection rate in animals from Kerman (7/5%) and Khorasan (7.3%) was rather the same, but if the infection rate only in cattle is being considered, it was much higher in Khorasan (9.8%) than in Kerman (6.5%).
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The intestinal parasitic infection is one of the major health problems in northern parts of Iran, especially in rural areas. In order to determine the prevalence of intestinal parasites and the effect of some factors such as age, sex, region on the prevalence of intestinal parasites, a study was carried out in rural areas of Tonekabon, Caspian littoral, from Jul. 1991 to Feb. 1992. A total of 2368 stool samples were randomly collected from different age groups in 27 plain and mountain village. The samples wee examined by direct and formalin – ether concentration methods. 74.6% of samples wee positive for at least one species of intestinal parasites. The prevalence of intestinal helminthes was: Trichuris trichiura 22.5%. Ascaris lumbricoides 16.3%, Strongyloides stercoralis 10.3%, Hook Worms 4.6%, Trichostrongulus. spp. 3.7% and Hymenolepis nana 3%. The prevalence on intestinal protozoa was: Giardia lamblia 29.6%, Entamoeba histolytica 9.6%, Dientamoeba fragilis 2.5%. The rates for Taenia saginata and Enterobius vermicularis (non specific method) were 0.5% and 2.1%, respectively.
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The purpose of this study was comparison the mean numbers of health knowledge & attitude and practice of first and last year students in Hamadan University of medical sciences. The studied populations were 301 first year medical students and 233 last year medical students in different subjects; they were compared with a sample population of Bou- Ali university students as control group. The result indicated that health knowledge of last year students were more than first year students because of education, but there were no difference in health attitude and practice between first and last year students.
