This Iranian team collected data of newly diagnosed cancer cases in the Golestan province of Iran in a 5 year period from 2004 to 2008. This area previously had one of the highest oesophageal cancer rates in the world. 9007 new cancer cases were reported from 68 healthcare centres in the province and the death registry. 71% of cases had microscopic verification. Incidences were reported as age-...

This paper presents a light-weight sweeping method, similar to SATand BDD-sweeping. Performance are on the order of 10x to 100x faster than SAT-sweeping for large designs, while achieving about 50-90% of the reductions.

It is shown that there exists a positive c so that for any large integer m, any graph with 2m 2 edges contains a bipartite subgraph with at least m 2 + m/2 + c √ m edges. This is tight up to the constant c and settles a problem of Erd˝ os. It is also proved that any triangle-free graph with e > 1 edges contains a bipartite subgraph with at least e 2 + c e 4/5 edges for some absolute positive co...

This article reviewed recent studies investigating the risk of developing inflammatory bowel disease (IBD)-associated CRC, a major potential complication of IBD. In patients with ulcerative colitis (UC) the risk of CRC increases with a younger age of diagnosis (age 0-19 years), longerdisease duration and concomitant primary sclerosing cholangitis. Of note, an underlying genetic predisposition i...

An approximation algorithm is an efficient algorithm that finds an approximate solution with a provable approximation guarantee. The standard measure of the quality of an approximation algorithm is its approximation factor. The approximation factor of an algorithm is the worst case ratio between the value (cost) of the solution the algorithm finds and the value (cost) of the optimal solution. T...

background: to determine a cut-off point of tpsa and psad to prevent unnecessary invasive cancer-diagnosing tests in the community. methods: this study was performed on 688 consecutive patients referred to our center due to prostatism, suspicious lesions on digital rectal examination and/or elevated serum psa levels. all patients underwent transrectal ultrasound guided biopsies and obtained psa...

having observed the costly failures of different cutoff walls, that had been constructed according to the mix design specified by reputable consultants in iran, a research programme was conducted to study the effects of constituent materials on the properties of plastic concrete. the main properties, such as compressive strength, biaxial and triaxial strains, permeability, and modulus of elasti...