Placing a certain number of sinks at appropriate locations in WSNs reduces the number of hops between a sensor and its sink resulting in less exchanged messages between nodes and consequently less energy consumption. Since finding the optimal number of the sinks to be added and their locations is an NP Hard problem, we propose in this paper, a topological level solution that uses a meta-heurist...

All current studies of rheumatoid arthritis are hindered by the lack of a precise definition of the disease. Patients in an arthritis clinic are selected, so that those with mild or short-lived forms of the disease are probably rarely seen. Because of this, better definition of rheumatoid arthritis is being sought through epidemiological studies. Four approaches are available, either separately...

conclusions the significant difference between groups 1 and 3 permits to establish a correlation between degree of nicotine addiction and hearing loss. however, further studies are needed to identify the mechanisms leading to hearing loss. patients and methods the study recruited smokers (100) and non-smokers as a reference group (100) aged 21 to 50 years living in noisy or quiet areas of beiru...

in this paper the breast lesions, more particularly the carcinomas. have been studied in the taj pahlavi cancer institute, teheran , iran, from 1956 through 1971. in this period of 15 years the number of breast lesions observed have been 2107 cases of which 1023 cases or 48.5 %have had reference to carcinomas especially among women, the ratio of females to males suffering from this type oflesio...

background :severe obesity is highly co-morbid with psychiatric disorders and may have effect on the quality of life. this study aimed to compare severity and prevalence rate of depression, anxiety and eating disorders and quality of life in severe obese patients before and 6 months after the gastric bypass surgery.   methods : this was a prospective observational study which conducted at hazar...

SUMMARY The widespread use of high-resolution, real time ultrasound has enabled physicians to identify a variety of fetal anatomy abnormalities. About 15-25% of fetal diseases can be diagnosed and even treated antenataly. This is a report of a case with fetal ovarian Cyst which has been confirmed with ultrasonography both antcnataly and postantaly, and caused intestinal obstruction in neonate...

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