نتایج جستجو برای: back propagationbp
تعداد نتایج: 156204 فیلتر نتایج به سال:
background: low back pain is the most common cause of disability and absence from work among young and middle-aged people. as there is limited knowledge regarding this problem among iranian students, this study aimed to determine the prevalence of low back pain and its ‘related sociodemographic factors among students of islamic azad university, tehran, iran. material and methods: this is ...
context low back pain (lbp) is among the most prevalent musculoskeletal conditions in the developed countries. it is a common problem causing disability and imposing a huge economic burden to individuals and state organizations. imaging plays an important role in diagnosis of the etiology of lbp. evidence acquisition the electronic databases included: pubmed (1950 to present), ovid sp medline (...
background: low back pain (lbp) is one of the most common musculoskeletal complications of today’s societies which, poses a big portion of health expenses and work absentees. lumbar disc herniation is claimed to be one of the several causes of lbp. conservative therapies like physiotherapy are found to be beneficial for treatment in such a kind of lbp. however, there is low evidence proving tra...
low back pain (lbp) is a widespread musculoskeletal disorder worldwide. it causes disability that influence work performance in individuals. the aim of this study was to evaluate the prevalence and risk factors of lbp in the middle-aged office workers in the lebanese population. in this observational, cross-sectional study performed in 2013, overall, 250 office workers aged between 20 and 64 ye...
low back pain (lbp) is likely the most common medical disorder among work population. in this survey, prevalence of lbp and pain severity and the association of them with occupational and non-occupational risk factors were specified among office workers in baqiyatallah university of medical sciences, tehran, iran in 2006 in this way the point prevalence of lbp and pain severity among office wor...
the genetics and mechanism of malathion resistance in the adults of an. stephensi (ban-s), was studied. nine successive generations of malathion selection in the adults resulted in an increase in ltso of about 3-fold. the crossing experiments indicated that the resistance is inherited as partially dominant character with no indication of sex linkage. the results of back-crosses suggested that p...
سابقه و هدف: انتروکوک فکالیس به طور شایع از دندان های با درمان ریشه شکست خورده جدا می شود و حضور آن در زمان پرکردن کانال به میزان قابل توجهی از موفقیت درمان ریشه می کاهد. هدف از این مطالعه بررسی اثر دو سیستم روتاری mtwo و روش دستی step back در پاکسازی انتروکوکوس فکالیس از کانال ریشه دندان های کشیده شده انسانی بود. مواد و روشها: در تحقیق نیمه تجربی حاضر، 62 دندان یک ریشه تک کاناله انسانی انتخاب...
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