نتایج جستجو برای: starting 10 s before the p
تعداد نتایج: 16437126 فیلتر نتایج به سال:
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
Background and aims: The outbreak of COVID-19 is currently a major concern, and timely understanding of peoplechr('39')s mental health status in the workplace has become an important issue. Physical-psychological parameters such as mental workload and job stress are among the most important components in determining the job performance of employees in work environments. This study aimed to eval...
AIM To assess the impact of highly active antiretroviral therapy (HAART) on the prevalence and progression of CMV retinitis (CMVR) among AIDS patients with baseline CD4 cell counts <100 cells x 10(6)/l. METHODS A longitudinal cohort study of 1292 patients. CD4 cell counts and HIV viral load measurements were obtained before commencing therapy, at 3 months, 1 year, 2 years, and at last follow ...
بررسی وجود و چندگانگی جوابهای معادلات دیفرانسیل به ویژه با شرایط مرزی اغلب بسی دشوار بوده و همراه با گام های ملالت آور می باشد بطوریکه همواره نیاز به پیش شرط هایی می باشد که معادلات دیفرانسیل با شرایط مرزی مورد نظر باید داشته باشد. بنابراین اثبات آنالیزی وجود و چندگانگی جوابهای مسائل مقدار مرزی غیر خطی اغلب غیر ممکن می باشد. روشهای تقریبی- تحلیلی یا روشهای عددی صرفاً برای بدست آوردن جواب موجود ...
Background: Sexual dysfunction in males is characterized by the inability to achieve or maintain an erection sufficient for a satisfactory sexual activity. Erectile dysfunction is a common disorder in males and intracavernosal injection of papaverine followed by color Doppler ultrasonography of the penis is used to diagnose and treat vascular impotence. In this study, we examined the relationsh...
objective(s): systemic lupus erythematosus (sle) is a multi-factorial autoimmune disease which may be characterized by t lymphocytes dysfunctions. th17 cells have been identified as new effector cells, which play an important role in the pathogenesis. in recent years, immunomodulatory effect of vitamin d3 has been noticed. in the present experiment, the effect of vitamin d3 on the expression of...
a simple, rapid and low-cost scanner spectroscopy method for the glucose determination by utilizing glucose oxidase and cdte/tga quantum dots as chromoionophore has been described. the detection was based on the combination of the glucose enzymatic reaction and the quenching effect of h2o2 on the cdte quantum dots (qds) photoluminescence.in this study glucose was determined by utilizing glucose...
the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...
Introduction: Balance in the elderly is one of the important issues, and imbalance can create irreparable problems for the elderly. The aim of this study was to investigate the effect of Frenkel balance exercise and aerobic exercise (walking) on improving the balance of elderly patients in Kerman province in 2016-2017. Methods: We used a randomized block design, with 4 participants in each ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید