نتایج جستجو برای: sigmoid
تعداد نتایج: 14966 فیلتر نتایج به سال:
Sigmoid volvulus during pregnancy is a rare complication, and as of 2012, fewer than 100 cases had been reported. In this report, we present a 30 year-old pregnant woman with sigmoid volvulus, and we discuss this rare entity.
Giant sigmoid diverticuli are uncommon and usually seen in association with multiple colonic diverticuli. A solitary diverticulum in an otherwise normal colon is very rare. Mostly asymptomatic, excision of giant sigmoid diverticuli is advised to prevent complications.
-The sigmoid fimction & very widely used as a neuron activation fimction in artificial neural networks. which makes its attributes a matter o f some interest. This paper presents some general results on the derivatives o f the sigmoid. These results relate the coefficients o f various derivatives to standard number sequences from combinatorial theory, and thus provide a standard efficient way o...
Percutaneous endoscopic colostomy (PEC) was first described in 1986, by Jeffrey Ponski [1], who had invented percutaneous endoscopic gastrostomy a few years before that [2]. Performed by 2 operators, PEC consists of placing a tube in the colon during colonoscopy in order to provide antegrade colonic enemas (ACE) in severe constipation or fecal incontinence [3,4]. The PEC tube can also be used a...
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