inflammatory bowel diseases are one of the important reasons of the referral to gi practitioners in our country and ulcerative colitis is the more frequent type of these disease in iran. in this study 200 cases of ulcerative colitis, which has been referred to imam khomeini hospital during that last 5 year, were studied. data was collected using the patient's records and face to face inter...

Wire electric discharge machine (WEDM) is spark erosion in unconventional machining technique to cut hard and the conductive material with a wire as an electrode. The blanking die material SKD 11 is a high carbon and high chromium tool steel with high hardness and high wearing resistance property. This tool steel has broad application in press tools and dies making industries. In this research ...

  Rectal cancer is the second most common cancer in large intestine. The prevalence and the number of young patients diagnosed with rectal cancer have made it as one of the major health problems in the world. With regard to the improved access to and use of modern screening tools, a number of new cases are diagnosed each year. Considering the location of the rectum and its adjacent organs, ma...

the effect of intracerebroventricular injections of prostaglandins e2 and f2a was studied on the rectal temperature of sheep. pge2 but not pgf2a at the same dose of 50mg elevated the 1h post-injection of rectal temperature. pge2 but not pgf2a at the same dose of 100mg increased 3.5 and 2h post-injection of rectal temperature, respectively. elavation of rectal temperature following pge2 and pgf2...

rectal prolapse is a relatively common disease of children and is defined as a rectal mucosa protrusion or a fullthickness protrusion (all layers) from anus. the purpose of this retrospective study is the review of different surgical techniques used in our centers and recommendations for optimal surgical management of rectal prolapse. this study was based on a 19 years experience in rectal prol...

introduction: any decrease in friction between orthodontic wire and bracket can accelerate tooth movement in the sliding technique and result in better control of anchorage. the present study was carried out to decrease this friction by coating of zinc oxide nanoparticles (zno) on orthodontic wires and porcelain brackets. materials and methods: in this in vitro study, a combination of 120 0.019...

background: in recent years, neoadjuvant chemoradiation and subsequent surgical resection with total mesorectal excision has been shown to increase local control with decreased toxicity. neoadjuvant chemoradiotherapy is the standard treatment for locally advanced rectal cancer. in this study we evaluated the efficacy a cox-2 inhibitor on pathologic response, sphincter preservation and acute tox...

Evaluation and prediction of performance of diamond wire saw is one of the most important factors involved in planning the dimension stone quarries. The wear rate of diamond wire saw can be investigated as a major criterion to evaluate its performance. The wear rate of diamond wire saw depends upon non-controlled parameters related to rock characteristics and controlled parameters related to ch...

background and aims. this study aimed to investigate release of nickel ion from three types of nickel-titanium-based wires in the as-received state and after immersion in a simulated oral environment. materials and methods. forty specimens from each of the single-strand niti (rematitan “lite”), multi-strand niti (speed supercable) and copper niti (damon copper niti) were selected. twenty specim...

In this paper, scattering of a plane and monochromatic electromagnetic wave from a nano-wire is simulated using surface integral equations. First, integral equationsgoverning unknown fields on the surface is obtained based on Stratton-Cho surface integral equations. Then, the interaction of the wave with a non-plasmonic as well as a palsmonic nano-wire is considered. It is shown that in scatter...