2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is a by-product o f t he trichlorophenol (herbicide) production and is also produced through a variety of combustion processes. It appears that TCDD is a ubiquitous chemical, particularly in industrialised countries, and the liver is the target organ of its toxicity. The prominent hepatotoxic effect of TCDD is progressive centrilobular necrosis. Th...

let r be a ring and v be a matrix valuation on r. it is shown that, there exists a correspondence between matrix valuations on r and some special subsets ?(mvpr) of the set of all square matrices over r, analogous to the correspondence between invariant valuation rings and abelian valuation functions on a division ring. furthermore, based on malcolmson’s localization, an alternative proof for t...

the phenomenon of how tests influence teaching and learning is commonly described as “wash back”in language instruction. literature indicates that wash back effect is a complex concept that becomeseven more complicated under different interpretations of the wash back phenomenon in teaching andlearning. in the present study, some definitions of wash back and its two major types were introduced,a...

Introduction. Determining educational needs is the first step in educational planning. Need assessment influences all the decisions regarding educational content, objectives & effective use of resources. To determine the correspondence of educational needs & content in the psychiatry & pediatrics prevalent diseases workshops. Methods. To do this cross- sectional study, 50 physicians participat...

Objective: To describe the characteristics of gonorrhoea and prostitution in Kermanshah, Iran. Method: From 1997 through 2000, 100 male gonorrhoea patients were followed for a mean of 18 months (range 8–42 months). Diagnosis and follow up were made by a combination of history, physical examination, and the Gram stained smear. Results: 4% of patients became infected by girlfriends, 24% by tempor...

The leaves of Arum conophalloides (Araceae) were used in some west areas of Iran as a dessert. The aerial parts of the herb were collected from Sahneh Mountains, Kermanshah Province, west of Iran and was hydrodistilled by Clevenger-type apparatus. Composition of the essential oil was determined by GC and GC/MS. Totally, 18 components (92% of total essential oil) were identified. The oil contain...

The genus Folsomides Stach, 1922 is represented by four species in the Iranian fauna, two of which are new to the science. Folsomides halshinicus sp. nov. and Folsomides subvinosus sp. nov. are found in Kermanshah Province (Western Iran). The new species belong to the Folsomides angularis (Axelson, 1905) group and they are distinguishable from other congeneric species by the macrochaetotaxy (11...

Hypogastrura persica sp. nov. is described from the Zagros Mountains (Kermanshah Province, Iran). The new species can be distinguished from two nearest congeners, namely H. exigua Gisin, 1958 (Alps) and H. magistri Babenko, 1994 (Siberia), by the body size, the number of sensilla on antennal segment IV, the number of setae on dens and ventral tube as well as chaetotaxy of abdominal terga IV and...