background: ritalin has high tendency to be abused. it has been the main indication to control attention deficit hyperactivity disorder. the college students may seek for it to improve their memory, decrease the need for sleep (especially during exams), which at least partially, can be related to serotonergic system. therefore, it seems worthy to evaluate the effect of ritalin intake on mature ...

because of implications for improving agricultural students’ learning and finally problem solving, creativity and employability, nowadays the modern teaching methods are a matter of great concern. therefore, this study explored the effect of teaching methods on learning of agricultural students in campus of agriculture and natural resources, university of tehran. the study was carried out durin...

The purpose of this study was to investigate the effect of thequasi-state ownership of the stock exchange in the ratio of short-termand long-term Yhay Circle is one of the string str in this study usingdata from 51 companies accepted has been used in the Tehran StockExchange. methods of statistical analysis in this study, the correlationof the Q Rgr million via software using the Excel, spss18,...

background: osteoporosis is a preventable and treatable disorder, reported with higher prevalence patients with ulcerative colitis but their relationship is controversial. osteoporosis in these patients may be attributes to corticosteroid use, malnutrition and reduced intake of calcium and vitamin d, lower levels of sex hormones, chronic inflammation and inflammatory cytokines. the aim of study...

OBJECTIVES To evaluate the current evidence for the efficacy of corticosteroid injection and non-electrotherapeutic physiotherapy compared with control for treating lateral epicondylitis. DESIGN Systematic review. PARTICIPANTS We searched five databases in September 2012 for randomised controlled studies with a minimum quality rating. Of the 640 studies retrieved, 11 were included, represen...

objective: administration of amoxicillin and metronidazole along with scaling and root planning (srp) is an effective adjunctive therapy for chronic periodontitis. studies have shown that administration of azithromycin is also effective for treatment of chronic periodontitis. this study aimed to compare the effect of short-term and long-term azithromycin regimen with amoxicillin and metronidazo...

One of the most significant discussion and challenges propounded in the macroeconomics is the effects of fluctuations of exchange rate on the macroeconomic variables (production, employment, inflation and … etc).In this direction, the important and noticeable point is the factors which lead to fluctuations in the exchange rate which, from amongst these factors as an example, is fluctuations in ...

background: this study aims to investigate the patterns of bioaccumulation and depuration of copper in the selected kidney and liver of capoeta fusca. methods: the fish were collected between september and november 2010 from a qanat in birjand. they were exposed to two types treatments with copper (0.25 and 0.75 mg/l) for a period of 41 days. the fish under study were exposed to the above-menti...

physiologists have shown that increased fluids improve skeletal muscle performance in prolonged exercise.typical orders provide for 125 ml of intravenous fluids per hour in patients taking limited oral fluids during labor. our purpose in this study was to determine whether increased intravenous fluids affect the progress of labor. in a prospective randomized institutional clinical trial, one-hu...