Comparison of closure of subcutaneous tissue versus non-closure in relation to wound infection and disruption after cesarean section delivery in obese patients.

چکیده: زمینه و هدف: باز شدگی زخم یکی از عوارض مهم بعد از سزارین است و چاقی یکی از ریسک فاکتورهای عفونت زخم به همراه سایر عوارض می باشد. این مطالعه با هدف مقایسه اثر دوختن یا ندوختن بافت زیر جلد در ایجاد عفونت و باز شدگی زخم بعد از عمل سزارین در افراد چاق انجام شده است. روش بررسی: در یک مطالعه کارآزمایی بالینی در شهرستان یزد 100 نفر از زنان چاقی (که بافت زیر جلد آنها حداقل cm2 بود) و با روش سزارین زایمان می کردند به دو گروه 50 نفری تقسیم شدند، در گروه مورد بعد از دوختن فاشیای شکم بافت زیر جلد با نخ ویکریل 2/0 سوچور شد و گروه شاهد بعد از دوختن فاشیا، زیر جلد را باز گذاشته و جلد ترمیم شد. بیماران هر دو گروه از نظر ترشحات عفونت و باز شدگی زخم بررسی شدند. نتایج مطالعه با تست های آماری t-student و کای دو بررسی شد. یافته ها: هر دو گروه از نظر سن، تعداد زایمان، نوع بیهوشی و نوع انسزیون یکسان بودند. عفونت چرکی (کشت مثبت) در 2 نفر ازگروه مورد و 5 نفر از گروه شاهد مشاهده شد (05/0

A Competition-based Pricing Strategy in Cloud Markets using Regret Minimization Techniques

Cloud computing as a fairly new commercial paradigm, widely investigated by different researchers, already has a great range of challenges. Pricing is a major problem in Cloud computing marketplace; as providers are competing to attract more customers without knowing the pricing policies of each other. To overcome this lack of knowledge, we model their competition by an incomplete-information game. Considering the issue, this work proposes a pricing policy related to the regret minimization algorithm and applies it to the considered incomplete-information game. Based on the competition based marketplace of the Cloud, providers update the distribution of their strategies using the experienced regret. The idea of iteratively applying the algorithm for updating probabilities of strategies causes the regret get minimized faster. The experimental results show much more increase in profits of the providers in comparison with other pricing policies. Besides, the efficiency of a variety of regret minimization techniques in a simulated marketplace of Cloud are discussed which have not been observed in the studied literature. Moreover, return on investment of providers in considered organizations is studied and promising results appeared

Factors associated with TBS worse than BMD in non-osteoporotic elderly population: Bushehr elderly health program

Background: Bone mineral density (BMD) and trabecular bone score (TBS) are moderately correlated. TBS is sometimes used as an adjuvant to BMD in the fracture risk assessment. Some individuals with normal BMD or osteopenia, have more degraded TBS. We aimed to identify factors associated with TBS worse than BMD in the non-osteoporotic elderly population. Methods: The study subjects were selected from 2384 women and men aged ≥60 years participating in the second stage of the Bushehr Elderly Health program, a population-based prospective cohort study in Iran. The BMDs of different sites and the lumbar spine texture were measured using dual-energy X-ray absorptiometry and the TBS algorithm, respectively. Subjects were categorized based on their BMD and TBS status