this paper tries to determine an optimum condition for the flotation operation of the alborz-sharghi coal washing plant. for this purpose, a series of comprehensive experiments have been conducted on representative samples from feed of the flotation system of the plant. four operational variables such as the collector dosage (fuel oil), the frother dosages (mibc), the pulp density percent and t...

the first occurrence of two parasitoid species belonging to the family pteromalidae (hym.: chalcidoidea) in alfalfa fields of maragheh (azarbaijan sharghi province) are reported: 1- halticopterina moczari erdã¶s, which was collected in 22 june 2003, and 2- trichomalus rufinus (walker) which was collected in 3 august 2003. both species were collected on medicago sativa by the second author.

background:  linguatulosis is a rare zoonotic parasitic infection, in which human plays the role of both defini­tive and intermediate host and can be occasionally infected. this study determines the status of infection in live­stock and its po­tential risk to men in the northwestern province of azarbaijan-e-sharghi, iran. methods: in a cross-sectional study from june 2007 to june 2008, 800 slau...

linguatula serrata, is a cosmopolitan zoonotic parasite. adult of l. serrrata parasitize the nasopharynx of canids. con­suming raw glandular material of infected intermediate hosts (camel, sheep, cattle, goat, etc.) can infect human. in iran, two-humped camel is merely found in cold regions (ardabil and east azarbijan provinces) and is in danger of extinc­tion. a seven-year-old two-humped male ...

Hearing loss (HL) is the most frequent sensory defect affecting 1 in 1000 neonates. This can occur due to genetic or environmental causes or both. The genetic causes are very heterogenous and over 100 loci have been identified to cause autosomal recessive non - syndromic hearing loss (ARNSHL). The aim of this study was to determine the contribution of the LRTOMT gene mutations in causing ARNSHL...

a notable amount of medicinal plants grow in iran and local communities in different parts of the country have developed a deep knowledge of various uses of plants during their old history. several ethnobotanical studies have been conducted by the traditional medicine and material medica research center (tmrc) to investigate the use of medicinal plants by local people. some of these studies hav...

This paper utilises the modified Folchi method to assess the environmental impact of coal washing plant, Alborz Sharghi, North-east Iran. In this study, the number of factors designed in the method was slightly modified by focusing on the environmental impact of coal washing operations. In addition, few other factors were designed and added to the previous factors. Then, twenty-one values of en...

economic growth is the most important purpose of developing countries. each country can improve social welfare and access to international markets by increasing production potential. production can increase by two ways: the first one, using more inputs that raising production cost and the second one, improving efficiency that can produce more output with certain inputs or the same output with l...

A notable amount of medicinal plants grow in Iran and local communities in different parts of the country have developed a deep knowledge of various uses of plants during their old history. Several ethnobotanical studies have been conducted by the Traditional Medicine and Material Medica Research Center (TMRC) to investigate the use of medicinal plants by local people. Some of these studies hav...