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Encyclopedia results for Low pressure area

Low pressure area





Encyclopedia results for Low pressure area

  1. Low-pressure area

    , which leads to upward motion. A low pressure area , low or depression , is a region where the atmospheric pressure at sea level is lower than that of surrounding locations. Low pressure systems form ... of a low pressure area is known as cyclogenesis . Within the field of Meteorology Dynamic meteorology ... the air becomes saturated as it rises, although the low pressure area typically bring cloudy skies .... The stronger the area of low pressure, the stronger the wind s which are experienced in its vicinity. Globally, low pressure systems are most frequently located over the Tibetan Plateau and in the lee of the Rocky mountains . In Europe particularly in the United Kingdom , recurring low pressure weather ... of the hot air, results in a low pressure area called a thermal low. ref name thermal Glossary ... the ocean rises, creating a low pressure area and a breeze from land to ocean while a large area of drying ... Region Headquarters. Retrieved on 2009 02 16. ref A low pressure area is commonly associated with inclement ... DEFAULTSORT Low Pressure Area Category Basic meteorological concepts and phenomena Category Types ... s help drive monsoon circulations. Low pressure areas can also form due to organized thunderstorm ... strengthening of cyclonic circulations, or low pressure areas, within the atmosphere. ref Arctic ... of high pressure area s Anticyclogenesis . ref name CyclogenesisDef cite web author Glossary of Meteorology ... with areas of low pressure. ref name BBCCycDef cite web author BBC Weather Glossary title Cyclone ... 2006 10 24 ref The largest low pressure systems are cold core polar cyclones and extratropical cyclones ... archive archivedate 2006 09 01 ref Polar lows are small scale, short lived atmospheric low pressure ... ref In Europe, particularly the United Kingdom, recurring extratropical low pressure weather systems ... See also Monsoon trough Elongated areas of low pressure form at the monsoon trough or Intertropical ... low pressure systems. ref cite web author Hobgood year 2008 url http geog www.sbs.ohio state.edu ...   more details



  1. Low-pressure discharge

    Multiple issues unreferenced December 2009 context December 2010 Low pressure discharges are discharges made under gas pressures from a few millitorr to a little less than atmospheric. They have the benefit of less power requirement of sustenance of the discharge as volume recombination rates are lower. It is easier to achieve uniform discharges at low pressure. Normally, the system is pumped down and only necessary plasma gases are then flown into the plasma chamber. Argon is a typical background gas because it has low ionization potential and therefore is easier to break down and sustain. Most discharges used in the semiconductor industry employ low pressure plasma physics plasmas . DEFAULTSORT Low Pressure Discharge Category Gas discharge lamps Manufacturing stub ...   more details



  1. Low pressure hydrocephalus

    Orphan date May 2011 No footnotes article date April 2011 Low pressure hydrocephalus is a condition whereby Ventricle brain ventricles are enlarged and the individual experiences severe dementia , inability to walk, and incontinence despite very low intracranial pressure . Low pressure hydrocephalus appears to be a more acute form of normal pressure hydrocephalus . If not diagnosed in a timely fashion, the individual runs the risk of remaining in the low pressure hydrocephalic state or LPHS. Shunt medical Shunt revisions, even when they are set to drain at a low ICP, are not always effective. The pressure in the brain does not get high enough to allow the Cerebrospinal fluid CSF to drain in a shunt system, therefore the shunt is patent, but malfunctioning in LPH. In cases of LPH, chronic Infarction infarcts can also develop along the corona radiata in response to the tension in the brain as the ventricles increase in size. Some of the reasons individuals develop LPH include Trauma medicine trauma , tumour , haemorrhage , meningitis , whole brain radiation, as well as other brain pathology that affects the compliance of the brain parenchyma . One treatment for the LPHS is External ventricular drain EVD set at negative pressures. According to Pang & Altschuler et al, a controlled, steady, negative pressure siphoning with EVD, carefully monitored with partial CT scans is a safe and effective way of treating LPH. In their experience, this approach helps restore the brain mantle. They caution against dropping or raising the pressure of the EVD too quickly as it increases risk and also ... this formula can lead to an ineffective, yet patent shunt system, despite a low pressure setting. Care ... 655 6 doi 10.1227 00006123 199410000 00010 title Low Pressure Hydrocephalic State and Viscoelastic ... Neurosurgery volume 35 issue 4 cite journal pages 353 9 doi 10.1080 02688690120072531 title Low pressure ... title Low pressure hydrocephalus and ventriculomegaly hysteresis, non linear dynamics, and the benefits ...   more details



  1. Low pressure receptor zones

    Low pressure receptor zones are areas with baroreceptor s located in the venae cavae and the pulmonary veins , and in the Atrium heart atria . They are also called volume receptors. These receptors respond to changes in the wall tension, which is proportional to the filling state of the low pressure side of circulation below 60mmHg . Their impulses regulate the secretion of antidiuretic hormone ADH Vasopressin , renin and aldosterone . An elevated atrial pressure produces a decrease in Vasopressin ADH and aldosterone secretion. The decrease in vasopressin secretion results in an increase in the volume of urine excreted, serving to lower blood pressure. In addition, stretching of atrial receptors increases secretion of atrial natriuretic peptide ANP , which promotes increased water and sodium excretion through the urine . ref Principles of medical physiology by A Fonyo page 577 ref In the right atrium , the stretch receptors occur at the junction of the venae cavae. In the left atrium , the junction is at the pulmonary veins. Increasing stretch of the receptors stimulates both an increase in heart rate and a decrease in vasopressin Vasopressin ADH secretion from posterior pituitary. See also bainbridge reflex . High pressure receptor zones References Reflist DEFAULTSORT Low Pressure Receptor Zones Category Sensory receptors circulatory stub neuroanatomy stub ...   more details



  1. High Pressure Low

    Infobox single See Wikipedia WikiProject Songs Name High Pressure Low Cover Against Me High Pressure Low cover.jpg Alt Cover of High Pressure Low Artist Against Me Album White Crosses album White Crosses Released December 21, 2010 Format 7 vinyl Recorded February 2010 at Crescendo Sound Studios, Gainesville, Florida Genre Folk punk Length 6 56 Label Sabot Productions Writer Tom Gabel Producer Against Me Last single White Crosses song White Crosses br 2010 This single High Pressure Low br 2010 Next single Russian Spies Occult Enemies br 2011 High Pressure Low is the third single from Against Me s fifth studio album White Crosses album White Crosses , released as a 7 vinyl single on December 21, 2010 on Sabot Productions. Background Following the recording their fifth studio album, White Crosses album White Crosses , Against Me recorded acoustic versions of songs written for the album in February 2010. ref http www.youtube.com watch?v lx9Ap Qwu20 Against Me Acoustic Sessions Gainesville,FL Part 2 . YouTube. Retrieved on 2011 03 28. ref An acoustic version of High Pressure Low was known to be recorded following lead singer Tom Gabel s video posts regarding the acoustic sessions. Gabel performed a song on his solo tour as early as 2008, thought to be called Southwest Florida Sunset , ref http www.youtube.com watch?v qYO1Gge 9UQ Tom Gabel Garfield Artworks Southwest Florida Sunset . YouTube. Retrieved on 2011 03 28. ref which has since officially been named as Strip Mall Parking Lots . ref http thepunksite.com interviews.php?page againstme2010 Against Me Interview Andrew Seward . ThePunkSite.com ... against me high pressure low 7 single mp3 Total Treble Against Me High Pressure Low 7 single MP3 . Totaltreble.bigcartel.com. ... product against me high pressure low 7 single mp3 Item description on Against Me ... Me. Retrieved on 2011 03 28. ref all lyrics Tom Gabel all music Against Me title1 High Pressure Low note1 acoustic length1 4 23 title2 Strip Mall Parking Lots note2 acoustic length2 2 34 Personnel ...   more details



  1. Low pressure molding

    Low Pressure Molding LPM with polyamide and polyolefin hot melt materials is a process typically used to encapsulate and environmentally protect electronic components such as circuit boards . The purpose is to protect electronics against moisture, dust dirt and vibration. Low Pressure Molding is also used for sealing connectors and molding grommets and strain reliefs. Key to this process are the raw materials and specialized molding equipment. Dimer acid based polyamide materials, better known as hot melt s, are used as molding compounds. They are thermoplastic s i.e. you heat them up until they are liquid and they solidify simply by cooling down. These polyamide materials differ from other thermoplastics in two main areas One Viscosity At processing temperature 410F 210C the viscosity is very low, typically around 3,000 centipoise similar to pancake syrup . Low viscosity materials require low injection pressure in order to inject into a cavity. In fact it is normal to use a simple gear pump to inject the polyamide material. Low injection pressure is paramount, when over molding relatively ... low pressure, typically 50 to 200 psi 3.5 to 14 bar into a relative cold mold set 65F 18C . The low ... boards are successfully over molded without causing any harm in the process. A low injection pressure does not stress a fragile solder joint. Use The process was initially invented by Henkel Corporation ref http www.henkel.com press press releases 2010 20101105 low pressure injection molding ... connectors and create strain reliefs for wires. The first commercial use of the Low Pressure Molding ... be an opportunity to use Low Pressure molding as the solution. Automotive sensors in cabin and even ... injection pressure is therefore applied to the cavity, even after its initial fill. This is done ... potting processes, faster cycle times, lighter parts and environmentally safe components. Since then Low Pressure Molding has spread out to other areas such as industrial products, medical, consumer ...   more details



  1. Low blood pressure cascade

    Orphan date February 2009 Unreferenced date December 2007 Expert subject multiple Medicine Anatomy date February 2009 When blood pressure falls many physiological cascades commence in order to return the blood pressure to a more appropriate level. The blood pressure fall is detected by a decrease in blood flow and thus a decrease in Glomerular filtration rate GFR . Decrease in GFR is sensed as a decrease in Na sup sup levels by the macula densa . The Macula Densa cause an increase in Na sup sup reabsorption, which causes water to follow in via osmosis and leads to an ultimate increase in blood plasma plasma volume. Further, the macula densa releases adenosine which causes constriction of the afferent arterioles. At the same time, the juxtaglomerular cells sense the decrease in blood pressure and release renin . Renin converts angiotensinogen inactive form to angiotensin I active form . Angiotensin I flows in the bloodstream until it reaches the capillaries of the lungs where angiotensin converting enzyme ACE acts on it to convert it into angiotensin II . Angiotensin II is a vasoconstrictor which will increase bloodflow to the heart and subsequently the preload, ultimately increasing the cardiac output . Angiotensin II also causes an increase in the release of aldosterone from the adrenal gland s. Aldosterone further increases the Na sup sup and H sub 2 sub O reabsorption in the distal convoluted tubule of the nephron . References reflist Category Cardiovascular physiology med stub ...   more details



  1. High-pressure area

    Image High pressure symbol.svg thumb The letter H is used to represent a high pressure area. A high pressure area , high or anticyclone is a region where the atmospheric pressure at the surface of the planet is greater than its surrounding environment. Winds within high pressure areas flow outward due ... flow clockwise around a high pressure area located in the northern hemisphere and counter clockwise ... pressure area. ref Becca Hatheway 2008 . http www.windows.ucar.edu tour link earth Atmosphere hadley ... to areas of low pressure. ref BWEA 2007 . http www.bwea.com edu wind.html Education and Careers ... of low pressure areas in advance of their associated cold front s. The stronger the pressure difference, or pressure gradient, between a high pressure system and a low pressure system, the stronger ... Service Southern Region Headquarters. Retrieved on 2009 02 16. ref See also Weather front Low pressure ... system is called an anticyclone . In general, high pressure areas are associated with cooler, drier ... of large scale air descent. The strongest high pressure areas are associated with arctic air masses during the winter, which modify and weaken once they move over relatively warmer water bodies. The area of high pressure associated with the descending branch of the Hadley cell , known as the subtropical ... the summer. The subtropical ridge also helps form most of the world s desert s. Arctic high pressure ... English language weather map s, high pressure centers are identified by the letter H. Weather maps in other .... High pressure systems form due to downward motion through the troposphere , the atmosphere atmospheric ... near or above the level of non divergence, which is near the 500 hPa pressure surface about midway ... pressure systems are alternatively referred to as anticyclones. On English language weather maps, high pressure centers are identified by the letter H in English, ref Keith C. Heidorn 2005 . http www.islandnet.com .... Retrieved on 2009 02 16. ref within the isobar meteorology isobar with the highest pressure value ...   more details



  1. Pressure

    22gage pressure 22&x 0&y 0 product search page . ref is the pressure relative to the local atmospheric or ambient pressure. Definition Pressure is the effect of a force applied to a surface. Pressure is the amount of force acting per unit area. The symbol of pressure is p . ref group lower ... math p frac F A mbox or p frac dF n dA math where p is the pressure, F is the normal force , A is the area of the surface area on contact Pressure is a Scalar physics scalar quantity. It relates the vector surface element a vector normal to the surface with the normal force acting on it. The pressure ... that force into a smaller area. Pressure is transmitted to solid boundaries or across arbitrary sections ... smoothly. The reason is that the flat side has a greater surface area less pressure and so ..., and the force per unit area the pressure is the same. We can shrink the size of our container down .... Properties of surface chemicals can be investigated by measuring pressure area isotherms, as the two ...about pressure in the physical sciences Image Pressure exerted by collisions.svg thumb right 250px alt A figure showing pressure exerted by particle collisions inside a closed container. The collisions that exert the pressure are highlighted in red. Pressure as exerted by particle collisions inside a closed container. Thermodynamics cTopic List of thermodynamic properties System properties Pressure the symbol p is the force physics force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure also spelled gage pressure ref group lower alpha The preferred spelling ... spelling. Many of the largest American manufacturers of pressure transducers and instrumentation use the spelling gage pressure in their most formal documentation Honeywell Sensotec s http www.sensotec.com ... usual to say the pressure is directed in such or such direction . The pressure, as a scalar, has ..., not the pressure. If we change the orientation of the surface element, the direction of the normal ...   more details



  1. Low Rocks and Sterna Island Important Bird Area

    File Roseate Tern LEI06.JPG thumb right 250px alt A pair of Roseate Terns facing each other at their nesting site The islands are important breeding sites for Roseate Terns The Low Rocks and Sterna Island Important Bird Area comprises two islets lying about 14  km apart and with a collective area of 14  ha, in the Montesquieu group of islands, in the mouth of Admiralty Gulf in the Kimberley Western Australia Kimberley region of Western Australia . Description Low Rocks is a 4  ha islet with a covering of grass and low scrub. Sterna s vegetation is dominated by Acacia tumida Pindan Wattle and Triodia microstachya , but there are also bare sandstone ledges used by nesting seabird s. Low Rocks is a nature reserve , while Sterna is unallocated crown land . Average annual rainfall in the area is about 900  mm. ref name bli BirdLife International. 2011 . Important Bird Areas factsheet Low Rocks and Sterna Island Kimberley . Downloaded from http www.birdlife.org on 07 08 2011. ref Birds The islands have been identified by BirdLife International as an Important Bird Area IBA because they support over 1 of the world population of Roseate Tern s, with up to 4000 breeding pairs using the site. ref cite web url http www.birdata.com.au iba.vm title IBA Low Rocks and Sterna Island Kimberley accessdate 2011 08 07 work Birdata first last publisher Birds Australia date ref Other seabirds recorded as breeding in the IBA include Crested Tern Crested and Lesser Crested Tern s, and Pied Cormorant s. ref name bli References reflist coord 14 05 37 S 125 47 23 E display title region AU WA type isle Category Islands of Western Australia Category Kimberley Western Australia Category Important Bird Areas of Western Australia WesternAustralia geo stub ...   more details



  1. Sandy Island and Low Rock Important Bird Area

    File Crested Tern courtship.jpg thumb right 300px alt Group of Greater Crested Terns displaying The IBA is an important site for Greater Crested Terns The Sandy Island and Low Rock Important Bird Area comprises two small islands with a collective area of 9  ha lying at the western end of the Gulf of Carpentaria in the Northern Territory of Australia . They lie south west of Groote Eylandt off the coast of Arnhem Land , with the nearest settlement there the Numbulwar, Northern Territory Numbulwar community . They are important as breeding sites for tern s. Description Sandy Island consists of three islets, connected by strips of sand and exposed reef at low tide, about 20  km from the mainland. The central island, vegetated with grass, vines and shrubs, supports the main seabird colony colony . Low Rock is a sand, coral rubble and rock island 25  km away, and about 30  km from the mainland it is surrounded by a reef and has a central stand of mangrove s. Both islands are traditionally owned Australian Aboriginals Aboriginal land. Sea turtle s nest on the islands beaches. ref name bli BirdLife International. 2011 . Important Bird Areas factsheet Sandy Island and Low Rock Gulf of Carpentaria . Downloaded from http www.birdlife.org on 2011 10 03. ref Birds The islands have been identified by BirdLife International as an Important Bird Area IBA because they support over 1 of the world population of Roseate Tern s, as well as a large breeding colony of Greater Crested Tern s, with up to about 10,000 birds of each species recorded. ref cite web url http www.birdata.com.au iba.vm title IBA Sandy Island and Low Rock Gulf of Carpentaria accessdate 2011 10 03 work Birdata first last publisher Birds Australia date ref The Greater Crested Terns nest mainly on Sandy Island, with small numbers of Silver Gull s. As well as Roseate Terns, birds recorded as nesting on Low Rock include Pied Cormorant s 150 , and Bridled Tern Bridled 1000 , Black naped Tern Black naped ...   more details



  1. The Pressure Is On

    Infobox Album See Wikipedia WikiProject Albums Name The Pressure Is On Type studio Artist Hank Williams, Jr. Cover ThePressureIsOn.jpg Released start date 1981 08 Recorded Genre Country music Country Length 33 59 Label Elektra Records Elektra Curb Records Curb Producer Jimmy Bowen Last album Rowdy Hank Williams, Jr. album Rowdy br 1981 This album The Pressure Is On br 1981 Next album High Notes br 1982 Album ratings rev1 Allmusic rev1Score Rating 4 5 ref name allmusic cite web last Jurek first Thom title The Pressure Is On review url Allmusic class album id the pressure is on r94746 pure url yes work Allmusic accessdate 16 February 2011 ref The Pressure Is On is a studio album by American country music artist Hank Williams, Jr. . It was released by Elektra Records Elektra Curb Records in August 1981. All My Rowdy Friends Have Settled Down and A Country Boy Can Survive were released as singles. The album peaked at number 5 on the Billboard magazine Billboard Top Country Albums chart ref cite web title The Pressure Is On Charts url Allmusic class album id the pressure is on r94746 charts awards pure url yes work Allmusic accessdate 16 February 2011 ref and has been certified Platinum by the Recording Industry Association of America RIAA . ref http www.riaa.org goldandplatinumdata.php?resultpage 1&table SEARCH RESULTS&action &title pressure 20is 20on&artist &format &debutLP &category &sex &releaseDate &requestNo &type &level &label &company &certificationDate &awardDescription &catalogNo &aSex &rec id &charField &gold &platinum &multiPlat &level2 &certDate &album &id &after &before &startMonth 1&endMonth 1&startYear 1958&endYear 2011&sort Artist&perPage 25 RIAA Gold & Platinum ref Track listing A Country Boy Can Survive Hank Williams, Jr. 4 16 The Coalition to Ban Coalitions ... Emerson , Vince Emerson 3 13 The Pressure Is On Williams, Jr. 4 13 All My Rowdy Friends Have Settled ... 5 U.S. Billboard 200 align center 76 References reflist DEFAULTSORT Pressure Is On Category 1981 ...   more details



  1. The Pressure

    was deleted Image Pressure cd.jpg thumb Things Move Fast 1999 My Heart Was Lost , cassette, Self Service Recs, 1997. The Pressure , cassette, Corporate Corp Recs, 1997. I Wanna Call Someone , 7 single ... Pressure, The Category American post punk music groups Category American post hardcore musical ...   more details



  1. No Pressure

    About the album the 2010 short film No Pressure film the episode from the TV series How I Met Your Mother No Pressure How I Met Your Mother Infobox album See Wikipedia WikiProject Albums Name No Pressure Type studio Artist Erick Sermon Cover NoPressure.jpg Caption Released October 1, 1993 Recorded 1992 1993 Genre Hip hop music Hip hop , East Coast hip hop Length 54 23 Label Def Jam Recordings Def Jam Producer Erick Sermon small Executive producer Music exec. small , Colin Wolfe Last album This album No Pressure br 1993 Next album Double or Nothing Erick Sermon album Double or Nothing br 1995 Singles Name No Pressure Type studio single 1 Hittin Switches single 1 date May 4, 1993 single 2 Stay Real single 2 date September 7, 1993 No Pressure is the solo debut studio album from United States American Hip hop music hip hop artist Erick Sermon , released in 1993 on Def Jam Recordings . The album peaked at number sixteen on the Billboard 200 Billboard 200 chart. Release and reception Album ratings rev1 Allmusic rev1Score Rating 4 5 ref name AllmscRvw cite web last Wynn first Ron title allmusic No Pressure Review url Allmusic class album id r190047 review pure url yes publisher Allmusic accessdate ... Bernard title No Pressure Music EW.com publisher Entertainment Weekly date 1993 10 15 url http www.ew.com ... name RRRvw cite web first Matt last Jost title Erick Sermon No Pressure Def Jam Rush Associated Labels ... allmusic No Pressure Charts & Awards Billboard Albums format work publisher Allmusic accessdate 2010 ..., and Sermon s mush mouthed, deadpan raps. Wynn ended his review stating that No Pressure is as much ... single pure url yes title allmusic No Pressure Charts & Awards Billboard Singles format work ... title allmusic No Pressure Credits format work publisher Allmusic accessdate 2010 11 22 ref arranging ... erences tags External links Allmusic class album id r190047 label No Pressure http www.discogs.com Erick Sermon No Pressure release 323644 No Pressure at Discogs Erick Sermon Category 1993 debut albums ...   more details



  1. Low

    , per Wikipedia Manual of Style disambiguation pages wiktionary low Low or LOW may refer to tocright Music Low band , an American indie rock group from Duluth, Minnesota Low David Bowie album Low David Bowie album , 1977 Low Testament album Low Testament album , 1994 Low Low EP Low Low EP , 1994 Low Kelly Clarkson song Low Kelly Clarkson song , 2003 Low Cracker song Low Cracker song , 1993 Low Flo Rida song Low Flo Rida song , 2007 Low Foo Fighters song Low Foo Fighters song , 2002 Low Camp Mulla song , 2010 Low , a song by Coldplay on the album X&Y Low , a song by R.E.M. on the album Out of Time album Out of Time Low , a song by Silverchair on the album Young Modern People Abiel Abbot Low 1811 1893 , American entrepreneur and philanthropist Albert Peter Low 1861 1942 , Canadian geologist and athlete Archibald Low 1888 1956 , British scientist and inventor Dave Low died 1916 , Australian rules footballer David Low agriculturalist 1786 1859 , Scottish agriculturalist David Low cartoonist 1891 1963 , New Zealand political cartoonist Edward Low 1690 1724 , English pirate Frank J. Low 1933 2009 , American physicist G. David Low 1956 2008 , American astronaut George Low 1926 1984 , American NASA administrator George Low Medal of Honor born 1847 , U.S. Navy sailor Harriet Low 1809 1877 , American diarist Hugh Low 1824 1905 , British colonial administrator and naturalist Joachim ... Norman Low 1914 1994 , Scottish footballer and football manager Rochelle Low born 1969 , Canadian field hockey player Seth Low 1850 1916 , American educator and politician Other uses Low complexity , a concept in computational complexity theory Low computability Low, Quebec , Canada LOW Festival , a cultural festival Low pressure area , a concept in meteorology Lo Wu Station , a rail station, MTR code LOW Louise Weiss building , the seat of the European Parliament Lunar Occultation Workbench , a free astronomical software package for computing lunar occultations . See also Low Island disambiguation ...   more details



  1. This Is a Low

    Song infobox Name This Is a Low Type Song Artist Blur band Blur alt Artist Album Parklife Published Released 25 April 1994 track no 15 Recorded 1993 Genre Britpop Length 5 07 Writer Composer Damon Albarn Label Food Records Producer Stephen Street Chart position Tracks prev Jubilee prev no 14 next Lot 105 next no 16 Misc Extra tracklisting Album Blur The Best Of Type compilation prev track On Your Own Blur song On Your Own prev no 15 this track This is a Low track no 16 next track For Tomorrow next no 17 This Is a Low is a song by English alternative rock band Blur band Blur for their third studio album, Parklife . Music and lyrics The song is in the key of E major ref name Parklife album booklet, page 16 Parklife album booklet, page 16 ref and is in Time signature 4 4 time . In total, the song contains two verses, two choruses, a guitar solo and two further choruses. The music commences with a four chord guitar progression, before moving straight into the first verse. The music is based in the mixolydian mode , highlighted by the fact the V chord B minor is minor instead of major. The song s lyrics reference a low pressure area of weather hitting Britain. The lyrics are based on the Shipping Forecast , with references made to the various areas surrounding the country. In the lyric sail on by with the tide , passing reference is also made to the tune Sailing By , which ends each day s broadcast of BBC Radio 4 . According to bassist Alex James musician Alex James in his 2007 autobiography Bit of a Blur, Damon was struggling with the words. For Christmas I bought him a handkerchief with a map of the shipping forecast regions on it... you can never tell where the muse is going ... , Long Forties Forties Up the Tyne, Forth and Cromarty There s a low in the High Forties Malin Head ... s End , as well as Blackpool and its famous lights and The Thames . Reception This Is a Low is often ..., this is proved by the surprise inclusion on Blur s Blur The Best Of Best Of compilation album. This Is a Low ...   more details



  1. Pressure experiment

    Refimprove date December 2009 Pressure experiments are experiment s performed at pressure s lower or higher than atmospheric pressure , called low pressure experiments and high pressure experiments , respectively. Pressure experiment are necessary because substances behave differently at different pressures. For example, water boils at a lower temperature at lower pressures. The equipment used for pressure experiments depends on whether the pressure is to be increased or decreased and by how much. A vacuum pump is used to remove the air out of a vacuum vessel for low pressure experiments. High pressures can be created with a piston Pneumatic cylinder cylinder apparatus, up to nowrap 5 Pascal unit GPa nowrap 50 000 bar and nowrap 2000 Celsius C . The piston is shifted with hydraulics , decreasing the volume inside the confining cylinder and increasing the pressure. For higher pressures, up to nowrap 25 GPa , a Anvil press multi anvil ref name calanv http www.gps.caltech.edu jed Multianvilpage.html caltech.edu Multianvil ref cell is used and for even higher pressures the diamond anvil cell . The diamond anvil cell is used to create extremely high pressures, as much as a million atmosphere unit atmospheres nowrap 101 GPa , though only over a small area. The current record is nowrap 560 GPa , but the sample size is confined to the order of tens of micrometres nowrap 10 sup 7 sup m . References references See also Orders of magnitude pressure DEFAULTSORT Pressure Experiment Category Physics experiments Physics stub ...   more details



  1. Pressure sensor

    a sensor that measures pressures below atmospheric pressure, showing the difference between that low ... a sensor that measures low pressure relative to perfect vacuum i.e. absolute pressure . Differential ... to measure strain or deflection due to applied force pressure over an area. Piezoresistive strain gauge ... This is where the measurement of interest is pressure , expressed as a force per unit area . This is useful ... is directly proportional to the flow rate through the venturi tube. A low pressure sensor is almost ...Image Pressuresensor.jpg right thumb 200px Digital air pressure sensor Image Digital barometric pressure sensor.jpg right thumb Compact digital barometric pressure sensor A pressure sensor measures pressure , typically of gas es or liquids . Pressure is an expression of the force required to stop a fluid from expanding, and is usually stated in terms of force per unit area. A pressure sensor usually acts as a transducer it generates a signal as a Function mathematics function of the pressure imposed. For the purposes of this article, such a signal is electrical. Pressure sensors are used for control and monitoring in thousands of everyday applications. Pressure sensors can also be used to indirectly measure other variables such as fluid gas flow, speed, water level, and altitude. Pressure sensors can alternatively be called pressure transducers , pressure transmitters , pressure senders , pressure indicators and piezometers , manometers , among other names. Pressure sensors can vary drastically ... would be that there may be over 50 technologies and at least 300 companies making pressure sensors worldwide. There is also a category of pressure sensors that are designed to measure in a dynamic mode for capturing very high speed changes in pressure. Example applications for this type of sensor would be in the measuring of combustion pressure in an engine cylinder or in a gas turbine. These sensors are commonly manufactured out of piezoelectric materials such as quartz. Some pressure sensors ...   more details



  1. Pressure exchanger

    Image Figure 01.jpg thumb right 3D rendering of how pressure energy is transferred br directly from a high pressure stream to a low pressure stream. File PressureExchanger 2DSchematics.svg thumb 300px Schematics of a rotary pressure exchanger. A High pressure side, B Low pressure side, C Rotor rotation, D Sealed area, 1 High pressure reject water inflow, 2 Pressurized sea water, 3 Low pressure sea water inflow, 4 Low pressure reject water drain, span style background ff0000       span ... spins inside a sleeve between two end covers. Pressure energy is transferred directly from the high pressure stream to the low pressure stream in the ducts of the rotor. Some fluid that remains in the ducts ..., LDP is low pressure differential, the subscript B refers to the low pressure feed to the device ... stream G to a low pressure feedwater stream B . Pressurized feedwater flows from the ERD D ... the membrane feed stream E . The concentrate leaves the ERD at low pressure H , expelled by the incoming ... saline solution brine at high pressure and potable water at low pressure. While the high pressure ... at low pressure to drain. Nearly all reverse osmosis plant s operated for the desalination ... style background 00ffff       span Sea water A pressure exchanger transfers pressure energy from a high pressure fluid stream to a low pressure fluid stream. Many industrial processes operate at elevated pressures and have high pressure waste streams. One way of providing a high pressure fluid to such a process is to transfer the waste pressure to a low pressure stream using a pressure exchanger. One particularly efficient type of pressure exchanger is a rotary pressure exchanger. This device ... to that of an old fashioned machine gun firing high pressure bullets and it is continuously refilled with new fluid cartridges. The ducts of the rotor charge and discharge as the pressure transfer process repeats itself. The performance of a pressure exchanger is measured by the efficiency of the energy ...   more details



  1. Pressure system

    , San Diego accessdate 2009 10 26 date 2005 03 19 ref The formation process of a low pressure area is known ... 2 accessdate 2009 01 02 ref The low pressure area s cloudy skies act to minimize Diurnal temperature ..., allows for warmer diurnal low temperatures in all seasons. The stronger the area of low pressure ... for high pressure area high and low pressure area s, as well as various types of synoptic scale ... of relative maxima and minima in the pressure field. The minima are called low pressure areas, and the maxima are called high pressure area s. A High is often shown as H , and a low pressure area low is shown as L . Elongated areas of low pressure, or troughs, are sometimes plotted as thick ... area. Cs depict cyclonic flow or likely areas of low pressure, while As depict anticyclonic ... measured convert 870.0 hPa inHg and the highest recorded convert 1085.7 hPa inHg . High and low pressure .... Pressure systems cause the day to day weather experienced locally. Low pressure systems are associated ... weather analysis surface weather map s. Low pressure system Image Low pressure system over Iceland.jpg thumb 250px right A large extratropical low pressure system swirls off the southwestern coast of Iceland. Main Low pressure area A low pressure area, or low , is a region where the atmospheric pressure at sea level is below that of surrounding locations. Low pressure systems form under areas of wind ... bibcode 2005JGRD..11004101D ref Low pressure areas can also form due to organized thunderstorm activity .... Retrieved on 2009 02 16. ref Around the world, low pressure systems are most frequently located ..., in the United Kingdom , recurring low pressure weather systems are typically known as depressions ... 21 accessdate 2010 11 23 ref High pressure system Main High pressure area Anticyclone Image GGB in fog ... on October 21, 2006. A pressure system is a region of the Earth s atmosphere where atmospheric pressure air pressure is a relative peak or lull in the Atmospheric pressure Mean sea level pressure sea ...   more details



  1. Vapor pressure

    solids this pressure is very low, but some notable exceptions are naphthalene , dry ice the vapor ...Vapor pressure or equilibrium vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium .... The equilibrium vapor pressure is an indication of a liquid s evaporation rate. It relates to the tendency of particles to escape from the liquid or a solid . A substance with a high vapor pressure at normal temperatures is often referred to as volatility chemistry volatile . The vapor pressure ... . The atmospheric pressure boiling point of a liquid also known as the normal boiling point is the temperature at which the vapor pressure equals the ambient atmospheric pressure. With any incremental increase in that temperature, the vapor pressure becomes sufficient to overcome atmospheric pressure ... formation deeper in the liquid requires a higher pressure, and therefore higher temperature, because the fluid pressure increases above the atmospheric pressure as the depth increases. The vapor pressure that a single component in a mixture contributes to the total pressure in the system is called partial pressure . For example, air at sea level, saturated with water vapor at 20 C has a partial ... . Measurement and units Vapor pressure is measured in the standard units of pressure . The International System of Units SI recognizes pressure as a SI derived unit derived unit with the dimension of force per area and designates the pascal unit pascal Pa as its standard unit. One pascal is one ... of vapor pressure is a simple procedure for common pressures between 1 and 200 kPa. ref cite web url http www.capec.kt.dtu.dk documents overview Vapor pressure Ruzicka.pdf title Vapor Pressure ... it in a container, evacuating any foreign gas, then measuring the equilibrium pressure of the gaseous .... This is often done, as with the use of an isoteniscope , by submerging the containment area in a liquid bath. Relation to boiling point of liquids Image Vapor Pressure Chart.png thumb right 301 px ...   more details



  1. Pressure washer

    Image Pressure Washer.JPG 300px thumb right Home use pressure washer powered by a small gasoline engine A pressure washer is a high pressure mechanical sprayer that can be used to remove loose paint, mold ... road surface s. The volume of a pressure washer is expressed in either Gallons or Litres Per Minute, which is designed into the pump and not variable. A pumps pressure, expressed in Pounds per Square ... MPa or more are available. A pressure washer differs from a parts washer in that a parts washer typically uses high volume, lower pressure 20 150 psi, 140 1000 kPa cleaning solutions in an enclosed cabinet to clean dirty parts. The impact pressure generated in a parts washer is typically higher than a pressure washer. Citation needed date June 2011 Additionally, the environmental issues in an enclosed parts washer are less because all of the solution is contained unlike a pressure washer. The basic pressure washer consists of An electric motor or petrol engine gasoline petrol engine that directly drives a water pump A high pressure hose Trigger firearms Trigger gun style switch Just as a garden hose nozzle is used to increase the velocity of the liquid, a pressure washer adds its own power to create high pressure and velocity. The pump cannot draw more water from the pipe to which the washer ... lower the output pressure. Most nozzles attach directly to the trigger gun. Some pressure washers, in combination ... in the cleaning process. Two types of chemical injectors are available  a high pressure injector that introduces the chemical after the water leaves the pump a downstream injector and a low pressure injector that introduces the chemical before water enters the pump an upstream injector . The type ... a pump if an upstream injector is used. Pressure washers are dangerous tools and should be operated with due regard to safety instructions. The water pressure near the nozzle is powerful ... velocities. Pressure washers have a tendency to break up tarmac if aimed directly at it, due ...   more details



  1. Discharge pressure

    Unreferenced stub auto yes date December 2009 Orphan date December 2009 Discharge pressure also called high side pressure or head pressure is the pressure generated on the output side of a gas compressor in a refrigeration or air conditioning system. The discharge pressure is affected by several factors size and speed of the condenser fan, condition and cleanliness of the condenser coil, and the size of the discharge line. An extremely high discharge pressure coupled with an extremely low suction pressure is an indicator of a refrigerant restriction. DEFAULTSORT Discharge Pressure Category Cooling technology Category Hydraulics Category Hydrostatics Category Pressure bs Pritisak pra njenja ...   more details



  1. Blood pressure

    over several visits. Regarding hypotension, in practice blood pressure is considered too low only if noticeable ... low blood pressure DS00590 DSECTION causes title Low blood pressure hypotension Causes accessdate ... pressures at the low end of these pressure ranges have much better long term cardiovascular health. The principal ... , aldosterone will increase fluid retention, and indirectly, arterial pressure. Baroreceptor s in low ... oversized cuffs yield too low a pressure. When blood flow is present, but restricted, the cuff ... cross sectional area, therefore the pressure across the surface drops. This is why the arterioles ... is a function of force per unit area, P F A , the larger the surface area, the lesser the pressure ... pressure that is Hypotension too low , and blood pressure that shows excessive or maladaptive fluctuation ...for information about high blood pressure Hypertension Diagnostic infobox Name Blood pressure Image Blutdruck.jpg Alt Caption A sphygmomanometer , a device used for measuring arterial pressure. DiseasesDB ... pressure BP is the pressure exerted by circulating blood upon the walls of blood vessel s, and is one of the principal vital signs . When used without further specification, blood pressure usually refers to the arterial pressure of the systemic circulation . During each heartbeat, blood pressure varies between a maximum Systole medicine systolic and a minimum diastolic pressure. ref cite web url http healthlifeandstuff.com 2010 06 normal blood pressure range adults title Normal Blood Pressure Range Adults publisher Health and Life ref The blood pressure in the circulation is principally due ... isbn 0 19 263323 6 oclc doi accessdate ref Differences in mean blood pressure are responsible for blood ... to flow presented by the blood vessels. Mean blood pressure decreases as the Circulatory ... due to Viscosity viscous losses of energy. Mean blood pressure drops over the whole circulation, although ... affects blood pressure via Fluid statics hydrostatic forces e.g. during standing and valves in veins ...   more details



  1. Pressure coefficient

    of pressure distribution by integration, or calculating the area between the lines on the distribution ...The pressure coefficient is a dimensionless number which describes the relative pressures throughout a flow field in fluid dynamics . The pressure coefficient is used in aerodynamics and hydrodynamics . Every point in a fluid flow field has its own unique pressure coefficient, math C p math . In many situations in aerodynamics and hydrodynamics, the pressure coefficient at a point near a body is independent ... hydrodynamic water tunnel , pressure coefficients can be determined at critical locations around the model, and these pressure coefficients can be used with confidence to predict the fluid pressure at those critical locations around a full size aircraft or boat. Incompressible flow The pressure coefficient is a parameter for studying the flow of incompressible fluids such as water, and also the low ... V infty 2 math where math p math is the Static pressure Static pressure in fluid dynamics pressure at the point at which pressure coefficient is being evaluated math p infty math is the pressure ... of the fluid, or the velocity of the body through the fluid Using Bernoulli s Equation , the pressure ... 1 bigg frac V V infty bigg 2 math where V is the velocity of the fluid at the point at which pressure ... where variations in speed and pressure are sufficiently small that variations in fluid density can ... math of zero indicates the pressure is the same as the free stream pressure. math C p math of one indicates the pressure is stagnation pressure and the point is a stagnation point . math C p math of minus ... for a Total energy port for supply of signal pressure to the Variometer , a special Vertical ... pressure coefficients up to one, and negative pressure coefficients including coefficients less than minus one, but nowhere will the coefficient exceed plus one because the highest pressure that can be achieved is the stagnation pressure . The only time the coefficient will exceed plus one is when ...   more details




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