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Showing 1 to 14 of 14 for “"suction pressure"”.
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Suction pressure measurement and behavioral observations of sprawning-run sea lampreys (<i>Petromyzon marinus</i>)
<p>Sea lampreys utilize attachment by suction throughout their life cycle. Despite the importance of this behavior, the role of surface texture in the attachment process has not been fully understood. The goal of this study was to develop a technique to quantitatively examine attachment abilities …
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The break-out behaviour of a suction anchor embedded in a granular soil.
… into the uplift behaviour of hemispherical suction anchors embedded in saturated sand. Anchor types are briefly discussed. Some existing theories related to plate-type anchors, for uplift foundations, and inverted cup-type surface suction anchors are reviewed. The experimental data and their …
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The response of a suction anchor group to various applied loadings.
The results of a study of the behaviour of buried suction anchors tested singly and in a group arrangement are presented and discussed. The tests were conducted in saturated granular soil, contained in a 1.8 m diameter tank, in both loose and dense states. The model anchors and the test apparatus …
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A study of air flow in a network of pipes used in aspirated smoke detectors
… system of 200 meters aggregate length, and the suction pressure was to be no less than 25 Pascals. Once the pipe network is installed, it is impractical and often impossible to test the transport time and suction pressure drop of every sampling hole in a complex network of pipes. Therefore, a …
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Modulation of Intraoral Subambient Pressure and Feeding Behavior Relative to Prey Type in the Largemouth Bass, Micropterus Salmoides Floridanus
<p>Variation, or modulation, of suction feeding performance across two prey location treatments, as measured by peak subambient pressure generation, was studied in the Florida largemouth bass, <em>Micropterus salmoides floridanus. </em>Previous studies of suction feeding in centrarchids have …
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Design and Implementation of a Pressure-Equalizing Vent System for Low-Slope Roofs
… are subjected to potentially high levels of suction pressure, especially when winds strike the corner of a building, creating vortices. Traditional methods of attaching roof membranes to substrates are prone to failure when the low pressure on the roof surface instigates a transfer of forces …
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Development and testing of thin composite palladium membrane for membrane fuel cell processors.
… electroless plating coupled with partial suction method onto a 30nm -Al2O3 support. The suction pressure creates a pressure difference between the bore and tube side of the support and this will eventually encourage the transfer of more Pd metal onto the ceramic support, at the same time …
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Continuous High-Pressure Negative Suction Drain: New Powerful Tool for Closed Wound Management: Clinical Experience
… healing, and even flap failures. The negative-pressure wound therapy has been described in detail in the literature to assist open chronic/complex wound closure in reconstructive surgery. However, the negative-pressure wound therapy was difficult to be applied under the incisional closed …
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Wake Filling Techniques for Reducing Rotor-Stator Interaction Noise
… jets, trailing edge slots, ejector pumps, and pressure/suction side jets were among the configurations tested for wake filling. A range of mass flow percentages were applied to each configuration and a pressure loss coefficient was determined for each. Considerable reduction in wake losses took …
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In-situ monitoring of an Omni directional roof vent on a low slope single ply roof to identify most efficient porous underlayment for maximum pressure propagation
… distributional characteristics of negative air pressure throughout the roof assembly, when subjected to suction pressure corresponding to different wind speeds. Various underlayments were tested at the Research & Demonstration Facility at Virginia Polytechnic Institute and State University to …
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Intermediate vapor bypass: A novel design for mobile heat pump at low ambient temperature
… this system was experimentally studied using low pressure refrigerants R134a and R1234yf. Severe heating capacity drop was noticed at extremely low ambient temperature, mainly due to low operating pressure in the outdoor evaporator. Decreasing suction density along with dropping evaporating …
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Experimental and numerical investigation of the design and control of vapor-compression systems with integration of two-phase ejectors for performance enhancement through expansion work recovery
… standard ejector cycle, which uses the ejector pressure increase to directly increase compressor suction pressure and reduce compressor power, and the ejector recirculation cycle, which uses the ejector to recirculate excess liquid through the evaporator and improve evaporator performance. The …
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Small intestine slow wave activity defined through in vivo high-resolution electrical mapping
… recorded using conventional serosal contact and suction electrodes, and biphasic and monophasic extracellular potentials were simulated in a biophysical model. Contractile movement was abolished by nifedipine, but extracellular slow waves persisted with no significant change in amplitude, …
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Interactions between integral membrane proteins and the cytoskeleton in red blood cells studied by measured molecular lateral diffusion
… membrane was deformed into a pipette by a minute suction pressure. The dependence of aspiration length on applied pressure is linear for elastic deformations and results in an effective rigidity modulus which is a combination of the elastic shear and the area expansion moduli of the membrane …