OBJECTIVE: To discuss cognitive and sociocultural learning theory literature related to athletic training instructional and evaluation strategies while providing support for the application of these practices in the didactic and clinical components of athletic training education programs. DATA SOURCES: We searched Educational Resources Information Center (ERIC) and Education Abstracts from 1975...

in order to determine iron and lead content of seminal plasma in water buffalo and to study their associations with the semen characteristics, 54 semen samples were collected from 10 buffalo bulls. the semen characteristics were evaluated; its iron and lead content were estimated by atomic absorption spectrophotometer. the iron and lead content of the seminal plasma (mean ± sem) was recorded as...

microspore culture was applied to induce embryogenesis in roses (rosa hybrida) cv. hav1. important factors affecting viability of isolated microspores and formation of multi-cellular structures including isolation media (nln, ab, b) and induction media were studied. the most responsive developmental stage of microspores (late unicellular) was determined using dapi staining. the least infection ...

molecular detection techniques are believed to be key tools for both prevention and treatment follow up of brucellosis within live stock and human beings. consequently rapid, reliable, easy to perform and automated systems for brucella detection are urgently needed to allow early diagnosis and adequate antibiotic therapy in time. brucellosis is a worldwide re-emerging zoonosis causing high econ...

abstract background and objective: according to the issue of dependence and tolerance in addicted patients, the inefficiency of existing treatments and the new recommendation for drug combination therapy for diseases in modern pharmacology, the present study examined the effect of methadone and valproate combination on morphine dependence and tolerance. materials and methods: ninety-eight male ...

introduction: ghrelin is a potent orexigenic agent in rodents and humans. some studies have shown that ghrelin participates in the adaptive response to weight loss and plasma concentration of ghrelin rises with dieting. on the other hand, weight loss and fasting is accompanied by increased levels of epinephrine and cortisol. in this study, we investigated the effects of epinephrine and cortisol...

introduction: we have recently reported the presence of two potassium currents with 598 and 368 ps conductance in the rough endoplasmic reticulum (rer) membrane. the 598 ps channel was voltage dependent and atp sensitive. however, the 368 ps channel was rarely observed and its identity remained obscure. since cationic channels in intracellular organelles such as mitochondria and rer play import...

introduction: microleakage can result in failure of endodontic treatment. an important characteristic of endodontic sealer is sealing ability. the aim of this experimental study was to compare the apical leakage of teeth obturated with gutta-percha and three different sealers (resin- and zinc oxide eugenol-based) with/without smear layer (sl). materials and methods: in this study, 100 single-ro...

objective: the aim of this study is to measure the effect of different condensation pressure on the microleakage of mineral trioxide aggregate (mta).  methods: this study was an invitro study. a total of 55 single rooted straight-canal human extracted sound teeth free of cracks or calcification were selected. teeth were sectioned from cej region at 3 mm above the root apex. remaining specimens ...

background: more psychiatric visits, especially non-emergency ones, to emergency departments (eds) of general hospitals have been observed in recent years. the aim of this study was to determine the characteristics of psychiatric visits to the ed of rasoul-e-akram hospital, tehran, iran. methods: in this cross-sectional study, during a two-month period, all psychiatric presentations and consult...