2023 Impact Factor: 1.3
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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 13 No 1-4 (1984)
Articles
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Exposing the ear to an intense noise will probably cause to hearing loss. This loss may be temporary threshold shift (TTS), permanent threshold shift (PTS), or a combination of the two. The average audiograms for the 157 textile workers, exposed to an average 100 dB (A) overall noise level, in 5 age groups indicated that the losses were most prominent for frequencies of 3 to 6 KC/S showing a peak at 4 KC/S. with continued exposure and aging significant permanent losses appeared at other neighboring frequencies as well as still further increases in the 3-6 KC/S range. The mean hearing loss of the three frequencies 0.5, 1 and 2 KC/S was chosen as an index of hearing impairment, and for this, beginning handicap was placed at 26 dB hearing level, where difficulty may encounter with low levels of everyday speech. Therefore, it was shown that the men older than 45 years were handicap even before starting their daily work. But at the end of working shift, the average of TTS combined with PTS was quantitatively about the same for the population studied independent of their ages. So, it was demonstrated that in the noise-exposed subjects TTS was inversely related to hearing level, and it was concluded that PTS might biologically protect the ear from further damage.
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The purpose of this study was to determine the effects of feeding iron-deficient diet during pregnancy and lactation on maternal rats. A total number of 64 rats were divided into 4 groups (pregnant), (non pregnant), (lactating) and (non lactating) with 16 animals in each group. Parameters used to evaluate the effects of dietary iron deficiency on the maternal animals were: iron contents of liver and spleen, hematocrit, serum iron and total iron-binding capacity. Animals fed the iron-deficient diet during pregnancy had lower levels of iron in their livers and spleens than the control group. Iron deficiency during both periods of pregnancy and lactation affected the lactating mothers to a greater degree than a deficiency during pregnancy. Hematocrit levels and iron contents of the livers and spleens of these mothers were lower than control group.
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Biological research of all kinds on mosquitoes must be built upon a foundation of correct identification and sound classification. Except for the anopheline vectors of malaria, relatively little is known about other mosquitoes in Iran and other countries in Southwest Asia. In view of this a comprehensive study on the mosquito fauna of Iran has started since 1981. In this report the list of the Aedes species of Iran is updated. Previous studies by Iranian and foreign investigators have revealed the occurrence of 6 Aedes species in Iran. Ae. vexans, Ae. geniculatus, Ae. caballus, Ae. Caspius, Ae pulchritarsis and Ae. aegypti. In the present study not only all named species, except one, were recollected but 5 additional species were also captured which formerly have not been know to occur in Iran. These species are Ae. Vittatus, Ae. echinus, Ae. detritus, Ae. flavescens, and Ae. leucomelas. Ae. aegypti has not been collected in Iran since the previous report in 1946. The present list of 10 species should not be regarded as final since other species, which occur in neighboring countries, may eventually be found in Iran.
