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| Articles
by
A.R. Lotfi |
Total Records (
2 ) for
A.R. Lotfi |
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R. Jamshidi
,
M. Yousefkhani
and
A.R. Lotfi
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The aim of this study is to come to a conclusion on the seasonal existence of varroaris in the apiaries of Eastern Azerbaijan Province, Northwestern Iran and comparing the spread rate of varroaris in this region with other regions (reported in similar studies). Among 942 apiaries under study (located in 10 regions in the province) in one year, 217 apiaries were infected by varroaris. Varroaris was witnessed to be found in its lowest rate in June (7.72%) and its peak was recorded to be in March (44%). Parasitic infection in the apiaries in the area in the months of honey production, during summer and fall demonstrated an increasing procedure in a way that in the months: July, August, September and October, the percentage of infected apiaries was, respectively 9.76, 26.82, 32.92 and 40%. In January, February and March the peak of infection witnessed was, respectively: 33.33, 34.66 and 44%. It is proposed that the rate of varroaris infection is higher in cold regions such as Eastern Azarbaijan Province comparing to warm climates and its incidence and spread in the cold seasons (fall and winter) is more than warm and hot seasons (spring and summer). |
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H. Aghdam Shahryar
,
A.R. Lotfi
,
M. Bahojb
and
A.R. Karami
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In this study, the effects of exposure to a 950MHz electromagnetic
field (EMF) emitted from cellular phones on serum testosterone and cortisol
hormones rate of adult male Syrian Hamster were evaluated. Seventy two
male Hamster in 3 groups include: group 1 or control group, group 2 or
expose for 10 days and under 950 MHz EMF (emitted from Cellular Phone)
for 1 h daily group 3 or expose for 50 days and under 950 MHz EMF for
1 h daily. In final, blood samples collected for determine of the testosterone
and cortisol concentration in the serum. Results showed that in long term
exposure EMF (group 3) testosterone and cortisol levels were increased
(p<0.01), but both of cortisol and testosterone hormones in short term
EMF exposure (group 2) did not significantly change. In conclusion, long-term
exposure of cellular phones EMF may affect the reproductive activity and
impair endocrine homeostasis and it may cause peripheral effects. |
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