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Topic: Hydrostatic pressure

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	Pressure - Wikipedia, the free encyclopedia
		Hydrostatic pressure is the pressure due to the weight of a fluid.
		The pressure of a moving fluid can be measured using a Pitot probe, or one of its variations such as a Kiel probe or Cobra probe, connected to a manometer.
		Blood pressure is still measured in millimetres of mercury in most of the world, and lung pressures in centimeters of water are still common.
	en.wikipedia.org /wiki/Pressure (1160 words)

	Encyclopedia: Pressure (Site not responding. Last check: 2007-10-29)
		Hydrostatic pressure is the pressure exerted by a fluid due to its weight.
		When expressed as a measurement, an atmosphere or standard atmosphere is a unit of pressure roughly equal to the average atmospheric pressure at sea level on the Earth.
		One way of defining pressure is in terms of the height of a column of fluid that may be supported by that pressure; or the height of a column of fluid that exerts that pressure at its base.
	www.nationmaster.com /encyclopedia/Pressure (2796 words)

	Hydrostatic Pressure in Liquids (Site not responding. Last check: 2007-10-29)
		In this Java simulation the hydrostatic pressure of a liquid is measured with an U-tube manometer.
		Consequently the pressure of the air in the connected tube (pink) increases so that the liquid sinks in the left part of the U-shaped tube and rises in its right part.
		The displacement of the liquid's level measures the hydrostatic pressure.
	physics.uwstout.edu /physapplets/a-city/physengl/hydrostpr.htm (208 words)

	Hydrostatic pressure -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-29)
		Hydrostatic pressure is the (The force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)) pressure exerted by a (A continuous amorphous substance that tends to flow and to conform to the outline of its container: a liquid or a gas) fluid due to its weight.
		The (Cheerfulness that bubbles to the surface) buoyancy force on a body fully immersed in a static fluid is attributable to the pressure, summed ((additional info and facts about integrated) integrated) over the body's surface.
		The pressure is (additional info and facts about isotropic) isotropic in that case - it acts in all directions equally.
	www.absoluteastronomy.com /encyclopedia/h/hy/hydrostatic_pressure.htm (215 words)

	Pressure
		The pressure exerted by a static fluid depends only upon the depth of the fluid, the density of the fluid, and the acceleration of gravity.
		The pressure in a static fluid arises from the weight of the fluid and is given by the expression
		Note that this static fluid pressure is dependent on density and depth only; it is independent of total mass, weight, volume, etc. of the fluid.
	hyperphysics.phy-astr.gsu.edu /hbase/pflu.html (179 words)

	Hydrostatic Pressure in a liquid
		The pressure at a given depth in a static liquid is a result the weight of the liquid acting on a unit area at that depth plus any pressure acting on the surface of the liquid.
		Pressure is force per unit area and this is not same as the total weight of the liquid in a vessel.
		The pressure at given level is transmitted equally throughout the fluid to be the same value at that level.
	www.ac.wwu.edu /~vawter/PhysicsNet/Topics/Pressure/HydroStatic.html (899 words)

	Time-dependent effects of intermittent hydrostatic pressure on articular chondrocyte type II collagen and aggrecan mRNA ... (Site not responding. Last check: 2007-10-29)
		Loaded cells were exposed to 10 MPa of intermittent hydrostatic pressure at a frequency of 1 Hz for periods of 2, 4, 8, 12, and 24 hrs.
		Hydrostatic pressure was cyclically applied at 10 MPa at a frequency of 1 Hz.
		Intermittent hydrostatic pressure was applied either continuously, with cells removed at periods of 2, 4, 8, 12, and 24 hrs, or at interval loading, with cells removed after a 4-day period during which loading was limited to 4 hrs per day.
	www.vard.org /jour/00/37/2/smith.htm (4717 words)

	Strength Differential Measured in Inconel 718: Effects of Hydrostatic Pressure Studied
		Hydrostatic pressures were obtained with argon and ranged from 210 to 630 MPa.
		Also, there were no significant effects of hydrostatic pressure on either the tensile and compressive yield strength (see the graph) or on the magnitude of the SDE.
		Flow in Inconel 718 appears to be independent of hydrostatic pressure, suggesting that this invariant may be removed from the phenomenological constitutive model.
	www.lerc.nasa.gov /WWW/RT2002/5000/5920lerch2.html (546 words)

	Fluids at rest
		Pressure is defined as the ratio of force per unit area where the force is perpendicular to the cross-sectional area.
		The total pressure on the surface of the foil would be the combination of atmospheric pressure plus this hydrostatic pressure.
		While the top remains securely closed, no fluid flows from the holes because the atmospheric pressure on the outside of the bottle is greater than the hydrostatic pressure within the bottle.
	online.cctt.org /physicslab/content/PhyAPB/lessonnotes/fluids/statics.asp (1468 words)

	Search Results for hydrostatic - Encyclopædia Britannica
		It is common knowledge that the pressure of the atmosphere (about 105 newtons per square metre) is due to the weight of air above the Earth's surface, that this pressure falls as one climbs upward,...
		Because atmospheric pressure is relatively constant except in the mountains, it probably is of little importance in growth regulation.
		The hydrostatic pressure, p, at any depth below the sea surface is given by the equation p = g, where g is the acceleration of gravity, is the density of seawater, which increases with depth, and z...
	www.britannica.com /search?query=hydrostatic&submit=Find&source=MWTEXT (367 words)

	Hydrostatic Pressure as the Controlling Factor in the Depth Distribution of Eurasian Watermilfoil, Myriophyllum ...
		Hydrostatic Pressure as the Controlling Factor in the Depth Distribution of Eurasian Watermilfoil, Myriophyllum spicatum L., University of Guelph.
		Hydrostatic Pressure as the Controlling Factor in the Depth Distribution of Eurasian Watermilfoil, Myriophyllum spicatum L.
		When there were suitable levels of light, temperature, nutrients and aeration, the plants grown under constant hydrostatic pressure for three weeks showed variations in the measured amounts of new growth but no measure could be associated with the constant increased hydrostatic pressure.
	www.sgnis.org /publicat/dale1981.htm (165 words)

	Forces in Static Fluids
		This understanding of pressure will then be used to demonstrate methods of pressure measurement that will be useful later with fluid in motion and also to analyse the forces on submerges surface/structures.
		This shows that the pressures at the two equal levels, P and Q are the same.
		As we live constantly under the pressure of the atmosphere, and everything else exists under this pressure, it is convenient (and often done) to take atmospheric pressure as the datum.
	www.efm.leeds.ac.uk /CIVE/CIVE1400/Section2/Fluid_Static1.htm (1059 words)

	Hydrostatic Pressure (Site not responding. Last check: 2007-10-29)
		All pressure from a fluid is transmitted by the collisions between the fluid particles and a submerged, or partially submerged object.
		The hydrostatic pressure at any depth is the pressure resulting from the column of water above that depth.
		The hydrostatic pressure will depend on the temperature only to the extent that the column of water above the object has decreased density with increased temperature.
	www.mcasco.com /qa_hp.html (259 words)

	Fluid pressure in TutorGig Encyclopedia
		Fluid pressure occurs in one of two situations: (1) an open condition, such as the ocean, or a swimming pool, or (2) a closed condition, such as a water line or a gas line.
		The concepts of fluid pressure are predominately attributed to the discoveries of Blaise Pascal and Daniel Bournoulli.
		Finally, when a pressure source (such as an air pressure tank, a pump, or the human heart) is attached to the system, that pressure adds to the static pressure.
	www.tutorgig.com /ed/hydrostatic_pressure (1013 words)

	Calculus II (Math 2414) - Applications of Integrals - Hydrostatic Pressure (Site not responding. Last check: 2007-10-29)
		In this section we are going to submerge a vertical plate in water and we want to know the force that is exerted on the plate due to the pressure of the water. This force is often called the hydrostatic force.
		Example 1 Determine the hydrostatic pressure on the following triangular plate that is submerged in water as shown.
		The approximate hydrostatic force on the plate is then the sum of the forces on all the strips or,
	tutorial.math.lamar.edu /AllBrowsers/2414/HydrostaticPressure.asp (604 words)

	Hydrostatic Pressure Influence On Phase Transition And Physical Properties Of (ResearchIndex)
		Abstract: this paper is to reexamine the usefulness of an proton model for a DKDP crystal in describing the behaviour of a crystal under 134 I.V.Stasyuk et al high hydrostatic pressure.
		It opens up the series of publications where we study the influence of external hydrostatic and uniaxial of different geometries stresses on the phase transition in crystals of KH 2 PO 4 family.
		1 the pressure dependence of the phase transition temperature..
	citeseer.ist.psu.edu /193177.html (739 words)

	The EHD FS - Tri-Arcuate Computer Simulations (Site not responding. Last check: 2007-10-29)
		The purpose of this study is to understand how the shape of electrode (the main cupola) may increase significantly the differential hydrostatic pressure thus the lifting thrust applied to the entire ship by the EHD effect.
		You may notice that the hydrostatic pressure (which can be compared to aerodynamic pressure) is lower on the upper surface of the tri-arcuate electrode than on the inner surface of the cupola.
		Compared to an simple cupola, a tri-arcuate electrode seems to give a better lifting efficiency, because the hydrostatic pressure is distributed on all the upper surface of the electrode as you may notice in the diagram below.
	jnaudin.free.fr /html/ehdefscs.htm (280 words)

	Botany online: Membranes and Transport - Osmosis
		It depends on psi = water potential, delta P = hydrostatic pressure, sigma = the ratio of the apparent osmotic pressure to the theoretical osmotic pressure for the semipermeable membrane and pi = osmotic pressure of the compartment (cell).
		The solution at the inside of the plant cell is subject to an additional hydrostatic pressure.
		Osmosis and turgor pressure have been extensively examined at the end of the last century by W.
	www.biologie.uni-hamburg.de /b-online/e22/22c.htm (892 words)

	Multiple Components of Membrane Retrieval in Synaptic Terminals Revealed by Changes in Hydrostatic Pressure -- ...
		Approximately 20 s later, the hydrostatic pressure of the patch pipette was increased from 2.8 to 5.0 cm H
		After the inhibitory effect of hydrostatic pressure on compensatory endocytosis is relieved, a slow retrieval of membrane is observed.
		prior to the decrease in pipette pressure and the onset of endocytosis.
	jn.physiology.org /cgi/content/full/88/5/2509 (5714 words)

	The Metastable State of Nucleocapsids of Enveloped Viruses as Probed by High Hydrostatic Pressure -- Gaspar et al. 276 ...
		Pressure is a valuable tool to perturb the structure of macromolecular assemblages and viruses (5, 7, 19-23).
		Lack of reversibility in pressure- and urea-induced disassembly of Mayaro and virus NC.
		Schematic representation of pressure effects on the whole virus particle and pressure and urea disassembly of Mayaro NC.
	www.jbc.org /cgi/content/full/276/10/7415 (4555 words)

	Hydrostatic Pressure Transmitter Process Pressure Transmitter - Barcon
		Recording pressure in various places in a and precise manner is important for both the facility coordinator and operator.
		Hydrostatic pressure measurement is a superior method of detecting the level of liquids in continuous level applications.
		In process control and storage tank applications in the chemical, petrochemical and pharmaceutical industries or in the food and environmental sectors, the levels of liquids and slurries are determined by the pressure applied to a sensor element.
	www.pepperl-fuchs.com /pa/levcon/cont-lev-con/04945/index3_e.html (341 words)

	Influence of hydrostatic pressure gradients on regulation of plasma volume after exercise -- Mack et al. 85 (2): 667 -- ...
		ISF pressure in the subcutaneous tissue was measured by using a fluid-filled wick catheter (15).
		permeability (21, 23, 24) and/or by increasing the hydrostatic
		Interstitial colloid osmotic and hydrostatic pressures in subcutaneous tissue of human thorax.
	www.jap.org /cgi/content/full/85/2/667 (5032 words)

	In vivo effects of hydrostatic pressure on interstitium of abdominal wall muscle -- Zakaria et al. 276 (2): 517 -- AJP ...
		The hydrostatic pressure profile within the AAM was measured by the technique of Wiig and colleagues (36) as later modified
		Figure 1 displays the measured hydrostatic pressure (mean ± SE) profiles across the abdominal wall.
		Effect of fluid pressure on the hydraulic conductance of interstitium and fenestrated endothelium in the rabbit knee.
	ajpheart.physiology.org /cgi/content/full/276/2/H517 (7653 words)

	Determination of Cellular Strains by Combined Atomic Force Microscopy and Finite Element Modeling -- Charras and Horton ...
		Intermittent hydrostatic pressure produced compressive strains that were maximal in the vertical direction (Table 1).
		Physiological levels of hydrostatic pressure alter morphology and organization of cytoskeletal and adhesion proteins in MG-63 osteosarcoma cells.
		The role of microtubules in the regulation of proteoglycan synthesis in chondrocytes under hydrostatic pressure.
	www.biophysj.org /cgi/content/full/83/2/858 (7596 words)

	Osmotic Pressure, Hydrostatic Pressure (Site not responding. Last check: 2007-10-29)
		The pressure exerted by the column forces some of the solution in the dialysis membrane bag out of the bottom of the dialysis bag.
		The presence of this yellow solution is observed by adding acid to the beaker to change the yellow methyl red to the more intense red color.
		The pressure in the column forces some of the solution containing indicator out of the bottom of the dialysis bag.
	jchemed.chem.wisc.edu /JCESoft/CCA/CCA2/MAIN/OSMOSIS/CD2R1.HTM (239 words)

	Estimate of the subepithelial hydrostatic pressure that drives inflammatory transudate into the airway lumen -- Serikov ...
		with an elevation of interstitial hydrostatic pressure (4,
		pressure was increased in intervals to 3, 6, and 10 cmH
		O luminal pressure head, no increase in transudation occurred until the pressure was released.
	jap.physiology.org /cgi/content/full/92/4/1702 (3386 words)

	Responses of different cell lines from ocular tissues to elevated hydrostatic pressure -- Wax et al. 84 (4): 423 -- ...
		We examined the viability and morphology of the cells incubated in the presence or absence of elevated hydrostatic pressure.
		Haskin C, Cameron I. Physiological levels of hydrostatic pressure alter morphology andorganization of cytoskeletal and adhesion molecules in MG-63 osteosarcoma cells.
		Hydrostatic pressure has different effects on the assembly of tubulin, actin, myosin II, vinculin, talin, vimentin, and cytokeratin in mammalian tissue cells.
	www.bjophthalmol.com /cgi/content/full/84/4/423 (3959 words)

	Basement Waterproofing - Inside - Part One
		The effects of hydrostatic pressure--the force that pushes against your basement walls at any given point as a result of the weight of the water above it--should not be discounted.
		The higher the water table rises around your basement, the more hydrostatic pressure will be exerted against the concrete.
		As the ground water level rose, the intense hydrostatic pressure popped holes in the basement walls.
	www.geekbooks.com /blog/archives/000336.html (589 words)

	Hydrostatic Pressure Simulator (Site not responding. Last check: 2007-10-29)
		The flow of water across a membrane in response to differing concentrations of solutes on either side - osmosis - generates a pressure across the membrane called osmotic pressure.
		Osmotic pressure is defined as the hydrostatic pressure required to stop the flow of water, and thus, osmotic and hydrostatic pressures are, for all intents and purposes, equivalent.
		Suggestion: Determine the pressure generated when 8.5 grams/liter NaCl (0.145 M) is on one side and water on the other - this is pretty close to the situation of having blood on one side and water on the other.
	arbl.cvmbs.colostate.edu /hbooks/cmb/cells/pmemb/hydrosim.html (482 words)

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