نتایج جستجو برای: walled pressure vessels
تعداد نتایج: 472560 فیلتر نتایج به سال:
Six personally observed cases of this lesion are reported and the literature is reviewed. One hundred and thirty-four cases have been reported to date. The lesion has occurred in many sites, but is commonest in the thorax (60%), abdomen (11%), neck (14%), and axilla (4%). Ninety per cent of cases are symptomless or have only the pressure symptoms, 10% have systemic signs, namely, fever, raised ...
HIstology: Section from the lesion shows a large focus of caseous necrosis rimmed by epithelioid cells, lymphocytes, macrophages and Langhan’s giant cells and a dense collagenous wall. Within the caseous necrosis, ghost outlines of necrosed blood vessels are seen surrounded by an eosinophilic, fibrinous material which represents tuberculous immune complex deposition. A thin compressed collar of...
Angiomyxoma is a distinct soft tissue tumor characterized by the presence of prominent myxoid matrix and numerous thin-walled blood vessels. This tumor has a predilection for the trunk, head and neck, extremities, and genitalia. It is a benign tumor and total excision is curative. Recurrence is rare except for aggressive angiomyxomas. A 12-year-old girl with a 10-year history of...
CNG vessels are used in many vehicles. Mass production of CNG pressure vessels requires exact understanding of process effective parameters. In this paper, the numerical analysis has been used to study the manufacturing parameters. The entire manufacturing processes, including deep drawing, redrawing and ironing, of an aluminum liner sample of CNG pressure vessel (without spinning) have been...
Abstract Introduction Dieulafoy lesion is a rare but significant cause of upper gastrointestinal tract (GIT) bleeding. Over 75% lesions are located in the stomach and they tend to be responsible for recurrent GIT Endoscopic therapy first line intervention achieve haemostasis. Patient A 49-year old normally fit man known have gastric since 2008 presented with history collapse on street melaena. ...
In this study, nonlinear analysis for thick cylindrical pressure vessels with arbitrary variable thickness made of hyperelastic functionally graded material properties in nearly incompressible state and clamped boundary conditions under non-uniform pressure loading is presented. Thickness and pressure of the shell are considered in axial direction by arbitrary nonlinear profiles. The FG materia...
Kidneys, surgically removed due to carcinoma, were subjected to perfusion in vitro. The perfusion distribution was studied by means of labeled microspheres injected during maximal vascular dilation and during two different norepinephrine concentrations. The perfusion concluded with injection of barium sulfate. Two-mm-thick slices of tissue were autoradiographed and microangiographed for visuali...
The residual stresses of the thin-walled injection molding are investigated in this study. It was realized that the behavior of residual stresses in injection molding parts was affected by different process conditions such as melt temperature, mold temperature, packing pressure and filling time. The layer removal method was used to measure the residual stresses at a thin-walled test sample by a...
in this paper, multi-stage optimum design of composite pressure vessels is presented. the design variables for composite vessels include the head shape, the winding angle, the layer thickness, the number of layers, and the stacking sequence. a parameter called modified shape factor is introduced as an objective function. this parameter takes into account the effects of the internal pressure and...
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