asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...

Introduction: After performing femoral angiography to prevent the occurrence of vascular complications due to femoral incision, patients should rest in bed for about 24 hours. Restriction of movement after coronary angiography causes some discomfort in patients. It seems that changing patientschr('39') status can affect feeling comfort in them. Objective: The effectiveness of different methods ...