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Topic: Relative pressure

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	Relative pressure - Wikipedia, the free encyclopedia
		Relative pressure is pressure as compared to atmospheric pressure, or the average pressure of air and Earth's sea level — 101.325 KPa, or 1 atm.
		Therefore, the relative pressure of ambient air at sea level is usually close to zero.
		Likewise, a gas at absolute pressure of 10 atm would have a relative pressure of 9 atm.
	en.wikipedia.org /wiki/Relative_pressure (98 words)

	Caltrans Online Training-Highway Traffic Noise Fundamentals
		When we examine the values of relative pressures and energy expressed in powers of ten, we notice that the exponent of the relative energy value is one-tenth of the decibel value.
		The exponent of the relative pressure is one-half of that of the relative pressure, or one-twentieth of the decibel level.
		For instance, the relative energy of 50 decibels is 105, and the relative pressure is 102.5.
	www.dot.ca.gov /hq/env/noise/online_training_module1/slides/slide25.htm (212 words)

	Capacitive ceramic relative-pressure sensor - US Patent 6578427 (Site not responding. Last check: 2007-10-16)
		The pressure sensor as claimed in claim 1 wherein the hydrophobic material is a silicone oil, a paraffin oil, or a silicone resin based on fluorinated siloxanes or on methyl-polysiloxanes.
		To produce a pressure sensor from a sintered diaphragm compact and a sintered substrate compact, the substrate and the diaphragm are soldered or brazed together along the periphery with the interposition of a spacer, so that the aforementioned chamber is formed.
		After the pressure sensors have been filled in, the valve 92 is closed, the valve 97 is opened, and the vacuum pump is switched on, so that the air in the chambers 13 of the pressure sensors 10 is removed.
	www.patentstorm.us /patents/6578427.html (2187 words)

	The definition of relative humidity (Site not responding. Last check: 2007-10-16)
		Relative humidity (RH) is the ratio of the actual partial vapour pressure of water to the saturation vapour pressure at that temperature.
		The saturation vapour pressure of water increases rapidly with temperature, from 610 Pascal at zero degrees to 2800 Pa at 23
		In practice it is often the relative humidity, or water activity, which is actually detected by the sensor.
	www.natmus.dk /cons/tp/coolfilm/rh_def.htm (534 words)

	Relative Humidity (Site not responding. Last check: 2007-10-16)
		It predicts that rising temperatures along with a rising relative humidity higher than 55 per cent is the perfect setting for the malaria parasite to prosper.
		Relative humidity is the ratio of the current vapor pressure of water in the air (or any gas), to the vapor pressure at which the air would become saturated at its current temperature, usually expressed as a percentage.
		Relative humidity is often mentioned in weather forecasts and reports, as it is an indicator of the likelihood of precipitation, dew, or fog.
	www.wikiverse.org /relative-humidity (600 words)

	Engine Tuning Calculator - absolute pressure
		Relative Humidity is a measure of how much moisture is in the air compared to the amount of moisture that the air could hold at saturation.
		Relative humidity is a function of temperature and therefore changes as the temperature changes, even if the amount of moisture in the air remains constant.
		The relative air density is the ratio of the calculated air density to the air density at sea level using the ICAO standard reference conditions.
	www.wahiduddin.net /calc/calc_hp_abs.htm (531 words)

	Best Practice for the Location of the Air and Thermal Boundaries in Small Commercial Buildings (Site not responding. Last check: 2007-10-16)
		The objective of the testing was to characterize air flows and pressure differentials within the building, characterize the air flow balance across the building envelope, identify the cause of air flow and pressure imbalances, and understand the interacting relationships between building airtightness, air flows, pressure differentials, HVAC equipment, indoor air quality, ventilation, and energy consumption.
		Relative humidity sensors were calibrated in environmental chambers using chilled mirror hygrometers as the standard.
		CFM25 in the ducts decreased by 80% from 571 to 112 (270 l/s@25 pascal to 53 l/s@25 pascal).
	www.fsec.ucf.edu /bldg/pubs/venthumid/index.htm (7173 words)

	Relative pressure Definition / Relative pressure Research (Site not responding. Last check: 2007-10-16)
		Relative pressure is pressure as compared to atmospheric pressureAtmospheric pressure is the pressure caused by the weight of air above any area in the Earth's atmosphere.
		Air masses are affected by the general atmospheric pressure within the mass, creating areas of high and low pressure....
		relative pressure is a value calculated at sea level using the.
	www.elresearch.com /Relative_pressure (124 words)

	Relative Permeability
		is estimated for all the 17 simulations and the corresponding relative permeabilities of the invading phase are calculated.
		The slope of the cluster pressure in figure 4.27 (1) is quite flat, indicating that the front continues to develop as a fractal structure.
		This is expected since the size of the trapped clusters increases with the front width causing the relative permeability of the invading phase to decrease.
	www.fys.uio.no /~eaker/thesis/node63.html (1000 words)

	INTRODUCTION TO THE GAS LAWS (Site not responding. Last check: 2007-10-16)
		Atmospheric pressure is about 1 bar absolute, and manometers which zero at atmospheric pressure and show negative in vacuum, measure a relative pressure against atmospheric pressure.
		When the pressure in a system is higher than the saturation pressure, the vapour condenses, causing the pressure to return to the saturation value.
		In a container, in which a liquid and its vapour are present and the pressure is equal to the saturation vapour pressure, evaporation and condensation occur simultaneously.
	www.leakdetection-technology.com /page_1/page_1.htm (1178 words)

	Pressure Transmitter. HD2004T AND HD20V4T MICROPROCESSOR RELATIVE, ABSOLUTE, PRESSURE TRANSMITTER (Site not responding. Last check: 2007-10-16)
		HD 2004T and HD 20V4T are microprocessor pressure transmitter, the first one having a current output (4÷20 mA) and the second one a voltage output (0÷5V, 1÷5V or 0÷10V).
		The sensitive element consists of a bridge of piezoresistive resistances laid on a ceramic diaphragm.
		When changing the applied pressure, the bending of this diaphragm causes a linear and proportional change of the bridge resistances.
	www.hotektech.com /DeltaOhmTP777.htm (334 words)

	Relative buoyancy?
		Since many numerical simulation models associated with deep convection also employ this traditional formulation of buoyancy relative to the environment, its impact on the simulations is reviewed and, unless the effects of the vertical perturbation pressure gradients are ignored, it is shown the simulations are not actually dependent on the base state.
		Term i on the rhs of (5) is that associated with the vertical gradient of the perturbation pressure, and term ii is that traditionally associated with buoyancy.
		The traditional use of a reference state and treatment of buoyancy as a relative quantity is simply an artifact of a simplified pedagogical treatment and a device to reduce truncation error in numerical simulations.
	www.cimms.ou.edu /~doswell/relbuoy/relbuoy.html (4289 words)

	LOWER TROPOSPHERIC RELATIVE HUMIDITY (Site not responding. Last check: 2007-10-16)
		Decreasing the temperature decreases the dewpoint depression and thus increases the relative humidity.
		High pressure systems will generally have lower values of lower troposphere relative humidity while low pressures will have high lower tropospheric relative humidities surrounding their cores.
		However, when the relative humidity is near 100%, the evaporation rate is very small (the atmosphere can not steal the water from the vegetation).
	www.theweatherprediction.com /habyhints/1 (444 words)

	Kistler Model 4053A Piezoresistive Relative Pressure Sensors
		The piezoresistive pressure sensors measure static and dynamic relative pressures.
		The pressure acts via a thin steel diaphragm and a cushion of oil on a silicon measuring cell.
		The reference pressure (only gases) is applied to the other side of the measuring cell via a hose stem, which can also be removed.
	www.intertechnology.com /Kistler/Pressure_Model_4053A.htm (132 words)

	relative pronoun - Hutchinson encyclopedia article about relative pronoun
		That is its ‘relative’ function (acting as a conjunction).
		The words have both a relating and a noun function; hence the term ‘relative pronoun’.
		This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
	encyclopedia.farlex.com /relative+pronoun (212 words)

	RELATIVE HUMIDITY, PRESSURE, AND TEMPERATURE VALUES FROM THE GHOST DANCE FAULT ALCOVE 7, YUCCA MOUNTAIN, NEVADA (Site not responding. Last check: 2007-10-16)
		For the period September 25, 2001 to June 10, 2002 the relative humidity at all stations was drier than the range of the thermocouple psychrometers (95 to 100%) and therefore not measured.
		Pressure monitoring indicated that the transmission of atmospheric pressure fluctuations across both bulkheads showed minimal dampening (< 5%) and short time lags (on the order of hours).
		The rising barometric pressure in front of the bulkhead could force warm, dry ESF air through the fractures around the bulkhead, which would evaporate water, cool the air, and result in the abrupt temperature decreases behind the bulkhead.
	gsa.confex.com /gsa/2002AM/finalprogram/abstract_41379.htm (480 words)

	Lund University, Doctoral Dissertation (Site not responding. Last check: 2007-10-16)
		The focus of the laboratory program was to investigate the influence of confinement on the water retention properties, the development of swelling pressure during a decrease in suction and the effect of external pressure and swelling pressure on suction.
		The measured axial swelling pressure that developed during water uptake under constant volume condition was normalised to a pressure corresponding to swelling pressure at saturation to be independent of void ratio.
		In the second relation the swelling pressure is related to the actual relative humidity in the clay and the relative humidity according to the retention curve for the current water content.
	www.lub.lu.se /cgi-bin/show_diss.pl/tec_849.html (531 words)

	Lateral Diffusion in Substrate-Supported Lipid Monolayers as a Function of Ambient Relative Humidity -- Baumgart and ...
		3 nm, the disjoining pressure is equal to the osmotic pressure
		Equation 13 is valid only for not too high disjoining pressures, due to the nonconvergence of Eq.
		Range of the solvation pressure between lipid membranes: dependence on the packing density of solvent molecules.
	www.biophysj.org /cgi/content/full/83/3/1489 (6566 words)

	The Kenny G Show playlist \| 01.07.04
		Now, as the high pressure area that's now in the Midwest moves toward us, tomorrow will be a sunny day with a gusty wind but milder, high 64 late in the day as the high pressure area moves offshore.
		Mostly cloudy, 39 in midtown, relative humidity 76%, the air is calm.
		The next, uh, frontal system is, uh, a relatively weak one now causing some flurries out in Wisconsin, uh, down into the Chicago area that'll be passing through here tomorrow evening, uh, we can see a, uh, few flurries or sprinkles and then it will clear late tomorrow night.
	www.wfmu.org /playlists/shows/10047 (21261 words)

	Relative contributions of "pressure pump" and "peristaltic pump" to gastric emptying -- Indireshkumar et al. 278 (4): ...
		Relative contributions of "pressure pump" and "peristaltic pump" to gastric emptying -- Indireshkumar et al.
		Relative contributions of "pressure pump" and "peristaltic pump" to gastric emptying
		The relative contributions to gastric emptying from common cavity antroduodenal pressure difference ("pressure pump") vs.
	ajpgi.physiology.org /cgi/content/abstract/278/4/G604 (555 words)

	[No title]
		It is accredited for dial analog pressure gauges and for digital pressure gauges in the 0…1000 bar range.
		The calibration is carried out by comparison with SIT laboratory reference standards, using manometric balances (primary standards) for calibrations of pressure gauges having an estimated uncertainty higher than 0.1%.
		The SIT certificate will show the standard pressure value opposite to the value of the instrument being calibrated, as well as the related error.
	www.gefran.it /de/products/product_664.aspx (263 words)

	Engine Tuning Calculator - dew point
		There is also a special version of the Engine Tuner's Calculator for users of digital weather stations which uses the values of temperature, absolute pressure and relative humidity.
		This calculator uses the dewpoint temperature rather than relative humidity because the dewpoint is essentially constant for a given air mass.
		The relative humidity is the ratio of the water vapor pressure to the saturated vapor pressure.
	wahiduddin.net /calc/calc_hp_dp.htm (655 words)

	Relative Heat
		Whether the surrounding atmospheric pressure is minimal as on Mars or, as little more maximal such as on Venus, in either instance IR is a seriously penetrating bad sort of heat.
		Conduction mode heat is something entirely relative to many somewhat controllable or even selective factors, unlike IR, conduction mode is often in good relationship to the surrounding composition of what's isolating yourself as well as for regarding the highly beneficial pressure considerations which counteracts much of whatever conduction heat introduces.
		So, when I've stipulated that heat is something relative, trust me, it is. It's as simple as all that and, it isn't rocket science that's needed in order to explain what's been going on nor of what we need to apply in order to fully take advantage of the opportunity at hand.
	guthvenus.tripod.com /heat-is-relative.htm (1333 words)

	Flow Resistance and Drag Forces Due to Multiple Adherent Leukocytes in Postcapillary Vessels -- Chapman and Cokelet 74 ...
		The dashed line is the relative resistance when all of the spheres are replaced by a solid cylinder that runs the length of the vessel along the wall.
		The dashed line is the relative resistance for a cylinder running the length of the vessel wall.
		An interesting observation is that the relative change in drag force is sensitive to the vessel diameter.
	www.biophysj.org /cgi/content/full/74/6/3292 (5561 words)

	Relative Horsepower Calculator
		This calculator uses relative humidity which requires some caution because the relative humidity changes radically during the day as the air temperature changes.
		The barometric pressure is the corrected to sea level atmospheric pressure that is typically reported on the local news or may be available from a local airport (this is not the same as absolute pressure, actual air pressure or station pressure).
		The humidity and barometric pressure can generally be gathered from a local weather report or the national weather service.
	www.csgnetwork.com /relhumhpcalc.html (420 words)

	[No title] (Site not responding. Last check: 2007-10-16)
		Volume is inversely proportional to pressure when the temperature and mass of the substance are kept constant.
		Critical point: The critical point is that point on the P-v or the T-s diagram where the locus of the saturated vapor state and the locus of the saturated liquid state intersect.
		The temperature and the pressure corresponding to the critical point/critical state are called the critical temperature and critical pressure.
	www.min.uc.edu /nuclear/ibt/nuc1.doc (922 words)

	relative pressure - humidity pressure relative sensor temperature (Site not responding. Last check: 2007-10-16)
		relative pressure - humidity pressure relative sensor temperature
		We are a leading Relative humidity sensor and Resistive humidity sensor manufacturer specialized in Relative humidity sensor, Resistive humidity sensor, Car temperature, Air pressure sensor, Car parking and backup sensor, Gas and Knock sensor, and Motion, System sensor.
		Vaisala measures humidity, dewpoint, barometric pressure, carbon dioxide as well as weather: wind, visibility, cloud height, lightning, ice.
	www.electronics-x.com /electronics/relative-pressure.html (246 words)

	Relative contributions of "pressure pump" and "peristaltic pump" to gastric emptying -- Indireshkumar et al. 278 (4): ...
		Pressure was measured at 19 manometric ports spaced at 3.3-mm intervals spanning antropyloroduodenal region.
		Basic structure in antral pressure variation is one of intermittent high-pressure spikes rising from a bed of low-level pressure fluctuations.
		Progressive antral pressure waves occur during periods when resistance to transpyloric flow is high, and quiescent periods in pyloric channel tend to occur during quiescent periods in antral pressure.
	ajpgi.physiology.org /cgi/content/full/278/4/G604 (6527 words)

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