background: third stage of labor has been defined as the most dangerous stage. due to the importance of the third stage, this study was performed in order to determine its length and related factors. materials and methods: this research is a cross sectional study which was carried out on 1000 deliveries in shabihkhani hospital (kashan-iran). inclusion criteria consist of gestational age of high...

In this work, single-stage and two-stage tubular solid oxide fuel cell (SOFC)/gas turbine hybrid cycles are comparatively examined from the energy and exergy viewpoints. For this purpose, mass, energy and exergy balances are applied to all components of the cycles. The behavior of tubular solid oxide fuel cell modeled in this study is validated with the experimental test data of tubular SOFC de...

Anecdotal evidence from the media suggests that accountability pressure increases teacher stress and drives teachers away from teaching, particularly leading to teachers leaving disadvantaged schools that serve a larger proportion of poor and minority students. However, no prior work has systematically examined the changes in the national trends of teacher turnover in response to NCLB school ac...

medicinal plante borazambol with the scientific name of perovskia abrotanoides karel. belongs to the family lamiaceae. it is growing wild in the margin of mountainous roads of arid and cold climate of north iran. it is for a long time that indigenous people by different methods in traditional medicine use its products in preventing and curing diseases. in this research, essential oils of perovs...

doing a piece of research on acquisition of second language phonetics theoretically will justify the exact stages of language trans- fer and further predicts the existence of systematicity and difficulty order (eckman, 2008). the present research is an attempt to provide new evidence for the efficacy of second language acquisition to devel- opmental stages of acquisition of phonological structu...

A study on the general population from both cadmium-polluted and control areas and on cadmium alloy workers indicates that beta 2-MG in urine is very closely correlated with aging, but it indicates an association with cadmium exposure. However, the age factor is stronger than cadmium exposre in both polluted and control areas among persons without clinical proteinuria. On the other hand, cadmiu...

some recent studies have revealed the relationship among excess ferritin, coronary heart disease, and insulin resistance. to assess the association between serum ferritin concentration and impaired fasting glucose, this study was designed. a total of 187 people including 91 impaired fasting glucose (ifg) subjects and 96 normal glucose subjects who had been recognized in a large epidemiological ...

BACKGROUND Antibodies that inhibit the growth of blood-stage Plasmodium falciparum may play an important role in acquired and vaccine-induced immunity in humans. However, the acquisition and activity of these antibodies is not well understood. METHODS We tested dialysed serum and purified immunoglobulins from Kenyan children and adults for inhibition of P. falciparum blood-stage growth in vit...

We examine the influence of inferring interlocutors' referential intentions from their body movements at the early stage of lexical acquisition. By testing human participants and comparing their performances in different learning conditions, we find that those embodied intentions facilitate both word discovery and word-meaning association. In light of empirical findings, the main part of this a...