نتایج جستجو برای: foam fluid
تعداد نتایج: 234821 فیلتر نتایج به سال:
Foam flow through processing equipment can seriously affect the structure of foam and its quality attributes. In design a formulation system, it is therefore important to consider possible implications on end-of-pipe ensure preservation product quality. We study straight pipe with without presence narrow orifice plate and, hence, dynamic stability wet food relevant foams fine texture high stati...
The Challenge Realistic modeling, simulation, and rendering of fluid media have applications in various domains including virtual reality training, engineering visualization, medical simulation, computer animation, and electronic games. Often the computational expense involved in simulating complex fluid phenomena limits the resolution at which these simulations can be performed. This limitatio...
foam injection is widely applied in amounts of fields to drilling, production, and formation protection. sometimes, the application result is disappointing, which is caused by the failure of bubble generation in foam flooding. therefore, it is necessary to seek ways for improving the performance of foam injection. an increased disturbance to the stratum, like the vibration caused by a seismic o...
in many processes polymeric foams can be produced by using chemical or physical blowing agents. in this work for polyethylene foam production, the chemical blowing agents and compression moulding process were employed. at first, by using dsc diagram of two polyethylene grades, a suitable polyethylene grade was selected for foam production and then we discuss about blowing agent critical percent...
The dynamic relations for highly porous fibrous materials, having analytical expressions viscous drag forces and oscillatory solid-to-fluid heat transfer, are now extended towards open-cell foam materials where the struts of considered to be primarily cylindrical except in region joints. By also including stiffness cell, an entirely analytically-based model is presented acoustics highly-porous,...
Aqueous foams are often used under various flow regimes, and one of the biggest challenges is to create predictive models of their complex rheological properties. Previous theoretical and experimental studies have qualitatively characterized the wall slip of foams. We focus on this phenomenon in a 1D geometry, studying the friction force to move a train of foam films in a narrow channel. We per...
OBJECTIVES To determine the efficacy of skin protection wheelchair seat cushions in preventing pressure ulcers in the elderly nursing home population. DESIGN Clinical trial with participants assigned at random to a skin protection or segmented foam cushion. Two hundred thirty-two participants were recruited between June 2004 and May 2008 and followed for 6 months or until pressure ulcer incid...
This Brief Report presents experimental and computational results on bubble formation in microfluidic devices. Bubbles are generated at the right-angle intersection of four identical square microchannels. When the pressure gradient generated by the liquid flow dominates the pressure gradient generated by gas flow, the length of the produced confined bubbles follows a law based on the channel si...
Effects of Nanoclay on Cellular Morphology and Water Absorption Capacity of Poly(vinyl alcohol) Foam
The present work was aimed to examine the effects of incorporation of each of two different types of nanoclay, i.e. Cloisite Na+ and Cloisite 30B, into PVA foam on cellular morphology and water absorption capacity. Foam samples containing 0.0-10.0 wt% of each of the two types of nanoclay alone were prepared using mechanical foaming. Accordingly, PVA/organoclay/water suspensions were prepare...
Galactoceles are benign cystic lesions that contain collostrum or milk, generally occur during pregnancy and postpartum lactation. Fine needle aspiration (FNA) yields milky fluid that is often both diagnostic and therapeutic. Cytologically, aspirates generally contain occasional foam cells and benign epithelium that displays lactational change with an abundant background of lipid micelles and p...
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