chemicaloil and gas

Báo cáo y học: No associations of Helicobacter pylori infection and gastric atrophy with plasma total homocysteine in Japanes

... consumption, concentration of serum folate and tHcy, and genotype frequencies between the positives and the negatives of H. pylori infection and gastric atrophy were examined by a Mann-Whitney ... concentrations of serum folate and tHcy were found between the posi-tives and the negatives of H. pylori infection and gas- tric atrophy according to the genotypes of MTHFR and TS in any subgroups ... infection and gastric atrophy are shown in Table 1. Age was significantly associated with H. pylori infec-tion and gastric atrophy. There were no significant differences in sex, smoking status and...

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Báo cáo y học: "Grb2-associated binder 1 polymorphism was associated with the risk of Helicobactor pylori infection and gastric atrophy"

Danh mục: Y học thưởng thức

... males and 328 females) aged 35 to 85 without a history of gastric cancer and 202 gastric cancer patients (134 males and 68 females) aged 33 to 94 with pathologically confirmed diagnosis of gastric ... loss of the infection due to sever gastric atrophy. Because, in our study, gastric atrophy and H. pylori infection were based on serological diagnosis and the diagnosis happened to be imperfect, ... influencing the abnormal proliferation and movement of gastric epithelial cells related to gastric atrophy via the activation of ERK. This study also showed that the gastric atrophy risk was highest...

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Báo cáo y học: " Polysaccharides from the root of Angelica sinensis protect bone marrow and gastrointestinal tissues against the cytotoxicity of cyclophosphamide in mice

Danh mục: Y học thưởng thức

... increase of 40% and 57% respectively). Dose-dependent effect was observed in both gastric and duodenal tissues. Effects of Angelica polysaccharides on cell proliferation in gastric and duodenal ... polysaccharides on VEGF, c-Myc, ODC and EGF protein expressions in gastric musoca As we had demonstrated that both the blood vessel and proliferating cell counts in gastric and duodenal tissues were ... significantly increased the number of blood vessel and PCNA-positive cell in both the gastric (Fig. 2A and 2B respectively) and duodenal tissues (Fig. 3A and 3B respectively). Dose-dependent effects...

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Tài liệu iPounder’s Marine Diesel Engines and Gas Turbines Eighth edition docx

Danh mục: Cơ khí - Chế tạo máy

... ENGINES AND GAS TURBINESwhere s is the stiffness in newtons per metre of deflection and m is the mass attached in kg.The essence of control is to adjust these two parameters, q and I (ors and ... input and output gears are respectivelyPounder’sMarine Diesel Engines and Gas TurbinesEighth editionia decade later the fleet had grown to some 2000 ships of almost twomillion grt; and by ... experimental and demonstration purposes. MAN built the first dieselengine—a 250 mm bore/400 mm stroke design—in 1893Preface viiIntroduction ix1 Theory and general principles 1 2Gas- diesel and dual-fuel...

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Tài liệu Run your car on water and gas double mileage! pdf

Danh mục: Kĩ thuật Viễn thông

... requiringnatural gas orpropaneasasourceofheat;therebysavingvaluable and diminishingnaturalresources.Spaceheaters and furnacesareexcellentcandidates.Stoves and othercookingunitssuchasbarbecuegrillscanalsobefueledbythewater‐hybridsystem.Suchapplicationsrequireaseparatepowersupplytoconvertyourhomes120voltACpowerintothe12voltDCpowerrequiredbythewater‐hybridsystem.YoucanpurchaseaninexpensivepowersupplyatanyelectronicsstoresuchasRadioShack,orhavesomeonefamiliarwithelectronicsbuildoneforyousincethedesignisverysimple.Thecostofhomeelectricityusedbythewater‐hybridsystemisinsignificant,probablylessthan$3permonthinmostcases.IstheWaterhybridsystemdifficulttobuild?No,thewater‐hybridsystemisrelativelyeasytoassemble and veryeasytoinstall,especiallycomparedwithotherconversionplansonthemarket.Nospecialtoolsarerequired.Theusualtool and equipmentfoundinatypicalhomeworkshopwilldothejob.AssemblingtheHyTronicmoduletoachieveitsinherenthighlevelofreliabilityrequirescare and attentiontodetails,alongwithaverageelectronicsskills.Theonlyspecialpieceoftestequipmentyoumaywanttohaveaccesstouseisanoscilloscope.ItISNOTnecessary,butmayhelpyouobtainpeakefficiencyfromtheHyTronicsmodule.But,youshouldn’thaveanyproblemgettinghelpfromalocalelectronicsguruifyoudon’thaveanoscilloscope.Mostfolksaresofascinatedbyunusualelectronicsystems and devicesthattheywouldalmostbewillingtopayyoufortheprivilegeoftweakingyourHyTronicsmodule!CanIbuyareadytoinstallWaterhybridsystem?Rightnow,thisspecificwater‐hybridsystemisnotbeingcommerciallymanufactured,buttherearevariousdistributorsaroundthecountrywhoofferDIY(Doityourself)partsorfullyassembledkitsutilizingsimilartechnologies and principles.PlanningisintheinitialstagesforproducingWater‐hybridconversionkitsformostvehicles and eventuallymanufacturingtheentiresystem,oratleastitsmajorcomponents.We’rehopingtohavesomeprototypekitstestedsoon and deliveryofready‐to‐installkitsshouldbeginsometimebeforetheendof2008.However,you’llsoonbebuildingyourown!23RunaCaronWater2. ... Besurepetroleumjellycoatsonlytheendcapthreads.17RunaCaronWaterFigure5:GeneratorElectrodeCircuitSchematic18RunaCaronWaterThesquarewavepulseratiodeterminestheamountofcurrentsenttotheGeneratorelectrodesbythecircuitoffigure5.Iftheratioislow(1:1),verylittlecurrentarrivesattheelectrodes.So,verylittlehydrogen and oxygenareproducedbytheGenerator.Iftheratioishigh(10:1),maximumcurrentreachestheelectrodes and theGeneratorproducesmaximum gas volume.Varyingvoltageinputfromapotentiometerconnectedviaa10Kresistortopin3ofcomponentLM741causesthecircuittovarythepulseratio, and thereforecontrolstheamountofgasesproduced.Thepotentiometershaftconnectstothevehiclethrottlelinkage,enablingcontrolof gas volumeindirectresponsetovoltagechangescorrelatingwithrotationofthepotentiometershaftinrelationtothrottlepositioning.Atrimmingpotentiometerconnectspins2 and 6ofcomponentLM741,enablingpreciseadjustmentofthethrottleinputsignal.Asecondtrimmingpotentiometerconnectspins4 and 7ofcomponentNE555,enablingprecisepulsewidthadjustment.TheelectrodepairsofeachGeneratorexhibitauniquefrequencyofelectricalresonanceatwhichoptimum gas volumeiscreated.ThisfrequencyoftenvariesconsiderablyamongdifferentGenerators.Severalfactorsdetermineresonancefrequencysuchas:electrodesize and shape,Generatorchambersize and shape,spacingbetweenelectrodes,coilparameters and relativepositioning, and pulseamplitude(voltagelevel).Atrimmingpotentiometerconnectedbetweenpins1 and 2ofcomponentCD4069allowstheprecisefrequencytobeobtained.Byselectingvariouscombinationsofdipswitchconnectionstoabankoffourcapacitors,pulsefrequencycanbevariedbetweenapproximately8KHz and 260KHz. ... Usingyourfinger,applyaverythin,butunbroken,coatofepoxycompletelyaroundthebottomedge(rodend)oftheouterelectrode.Formabandexte4ndingabout¼”highfromthebottomedge,coatingboththeinside and outsidesurfacesoftheelectrode.NoteBesuretoinstalltheouterelectrodefirst.NoteTheprocedureofstep41centerstheinnerelectrodewithintheouterelectrode.Donotoverlaptapeendsifmoretapeisadded;simplybuttthetapeendsbeforecontinuingtowrap.12RunaCaronWaterForafewbriefmoments,onlymoreaccuratealignment and increasedpullingactionuponthewatermoleculesoccurs.But,theHyTronicssignalpulseskeepchargingthewatercapacitortohigher and highervoltagelevels;actuallyseveralthousandvolts.Suddenlytheelectricalforcesbecomesogreatthatthewatermoleculesburstapart(scientistscallthisactiondisassociation)intotheirgaseousformsofhydrogen and oxygen.IfyouwereabletolookintotheGenerator,thisactionwouldbeobviousbecauseoftheformationofmillionsoftinyhydrogen and oxygen gas bubbles.AslongastheHyTronicssignalisapplied,thewatercapacitorremainsfullycharged;continuouslycreatingorthohydrogen and oxygen.Anotherelectroniccircuitisformedbythegeneratorcoil.Thisisaninductivecircuit,meaningitcreatesamagneticfieldasopposedtothechargedfieldcreatedbythewatercapacitor.TheverylowfrequencyHyTronicssignal(actuallyashortpulse)activatesthemagneticfieldofthecoil.Assoonasthepulsestops,themagneticfieldcollapses.Thiscreatesanevenstrongermagneticfield,butafieldofoppositepolarity.Thatishowaninductivecircuitworks,anactioncommonlycalled“inductivekick.”Eachpulseispreciselytimedsothatalmostimmediatelyafterthemagneticfieldreverses,anothershortpulsearrives.Onceagainthecoilischarged and itsmagneticfieldcollapses.Butnowthecontinuallyreversingmagneticfieldbecomesevenstrongerduetoaddedenergyofeachnewpulse.Eventually(actuallywithinjustafewseconds)thecoilreachesitsmaximummagneticstrength,calleditssaturationpoint.Mostmoleculesareeffectedbymagneticfields.Thecoil’sreversingmagneticfieldsvibratethewatermoleculessovigorouslythattheydisassociateintogaseousformsofparahydrogen and oxygen.Disassociationobservablyoccurs,asseenbythecreationofmillionsoftinyhydrogen and oxygen gas bubblesaroundthecoil.Atthispoint,we’vecoveredtheconceptsneededtounderstandthebasicfunctioningofthegenerator.EveryothercomponentoftheWater‐hybridsystemissimplyusedtopreciselycontroltheactionofthegenerator.Byvaryingthestrength and frequencyoftheHyTronicsignals,theratebywhichhydrogen and oxygenarecreatedcanbevariedtomatchenginerequirementsatanyparticularmoment.Waterissuppliedbythetank and pump,whilewaterlevelwithintheGeneratoriscontrolledbyalevelsensor and switch.Forsafetypurposes,areliefvalveprotectsagainstexcesspressurebuildupwithinthegenerator.Separateportsareprovidedforattachinghosestoroute gas totheengine and toanoptionalgaugetomonitor gas pressurebuildupwithinthegenerator.Adrainvalveisinstalledtoallowperiodicflushingofaccumulatedminerals and contaminants.ThebottomendcapisthreadedsothattheGeneratorcaneasilybeopenedupforinspectionorrepair and foroccasionalcleaningoftheelectrodes and coil.Twopairsofstainlesssteel(copper,oranyconductivemetal)rodends19RunaCaronWaterFigure6:GeneratorCoilCircuitSchematicTheGeneratorcoilcircuitcreatesapulsedsignalverymuchsimilartothatoftheelectrodecircuitoffigure5;but,productionofparahydrogen and oxygenbythecoilentailstotallydifferentoperatingparametersthandoesorthohydrogen and oxygenproductionbytheelectrodes.Optimumoperatingfrequencyforthecoilismuchlower,withintherangeofapproximately16Hzto25Hz.Coilfrequencydirectlycorrelatestotheoptimumoperatingfrequencyoftheelectrodecircuitsinceitsinputsignalisreceiveddirectlyfrompin3ofelectrodecircuitcomponentNE555.Theelectrodecircuitsignalisreceivedviathe“DividebyN”logiccircuitwhichproducesoneoutputsignalinresponsetoaspecificnumberofinputsignals.Forexample,iftheoptimalfrequencyoftheelectrodecircuitis19KHz and the“DividebyN”logiccircuitcreatesoneoutputpulseforevery1,000inputpulses,theoutputfrequencyofthe“DividebyN”logiccircuitwouldbe19Hz.Thatsignalisreceivedviapin2ofcomponentNE555,whichcreatestherequiredsquarewavepulses.Thosepulsesaresentviapin3tothebaseoftransistor2N3055,wheretheyareamplified and transmittedtothecoil.11RunaCaronWatertoslowitsburningrate.Atbestthisisaninexactsciencesinceitdependsupontryingtoaveragetheoctanerequirementsformillionsofengines.Technicallyspeaking,theHydrogen/OxygenGeneratoritselfisanelectronic‐basedunit.Thetwoelectrodesformabasiccapacitor,thousandsoftimeslargerthancapacitorsusedintypicalcircuits,withwateractingasitsdielectric.Theinnerelectrodeisnegativelycharged, and theouterelectrodeispositivelycharged,bythehighfrequencyHyTronicssignal.Chemically,eachwatermolecule(H20)iscomposedoftwopositivelychargedatomsofhydrogen and onenegativelychargedatomofoxygen.Sinceoppositechargesattract,thepositivelychargedhydrogenatomsarepulledtowardtheinnerelectrode.But,atthesameinstant,thenegativelychargedoxygenatomsarepulledtowardtheouterelectrode.Thisactionalignseverywatermoleculebetweentheelectrodes,withtheendsofeachmoleculebeingpulledinoppositedirections.Inanutshell,thisisthehydrolysisprocesscentraltohydrogenextraction.Figure1:Hydrogen/OxygenGenerator22RunaCaronWaterLet’sBuildthewaterhybridsystem!:GeneratorConstructionElectrodesSinceenginerequirementsdictatethevolumeofhydrogen and oxygengasesthatthegeneratormustcreate, and gas volumeisvariable,Irecommendsizingitaslargeasispracticaltoallowreservecapacity.Maximumoutsidediameterof4.5”isalreadydeterminedbytheconstructionmaterialusedfortheGeneratorhousing:4”CPVCSchedule80pipe.Irecommendaminimumheightof10”.Maximumheightdependsuponavailablespacewithintheenginecompartmentbut,forstructuralintegrity,limitheightto18”.Carefullychecktheenginecompartmentofyourvehicletoensurethatadequatespaceexistsforgeneratorinstallation.Ifadequatespacedoesnotexisteitherlimitthegeneratorheight(butnotlessthan10”),orlocatethegeneratorwithinthetrunk,orasfarforwardaspossibleunderthedash.1....

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Nitrosamine and related food intake and gastric and oesophageal cancer risk: A systematic review of the epidemiological evidence ppt

Danh mục: Sức khỏe giới tính

... association between nitrite and nitrosamine intake and GC, between meat and processed meat intake and GC and OC, and between preserved ﬁ sh, vegetable and smoked food intake and GC, but is not conclusive. ... nitrite and nitrosamine intake and gastric cancer (GC), between meat and processed meat intake, GC and oesophageal cancer (OC), and between preserved ﬁ sh, vegetable and smoked food intake and ... intake; Gastric cancerJakszyn P, González CA. Nitrosamine and related food intake and gastric and oesophageal cancer risk: A systematic review of the epidemiological evidence. World J Gastroenterol...

8
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An Assessment of the Environmental Implications of Oil and Gas Production: A Regional Case Study pot

Danh mục: Điện - Điện tử

... unconventional natural gas resources including tight gas sands, shale gas, and CBM. Unconventional oil and gas resources are loosely defined as resources that are generally deeper and / or more difficult ... water, and land use impacts associated with oil and gas production nationally and in Region 8. These policies range from the implementation of mandatory emissions limits on oil and gas operations ... CO2 emissions. Specifically, natural gas lease and plant is recovered natural gas used as fuel for various oil and gas extraction operations and natural gas processing equipment. CO2 emissions...

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The Economic Impacts for Ireland of High Oil and Gas Prices doc

Danh mục: Cao đẳng - Đại học

... risk mitigation and a low carbon future THE ECONOMIC IMPACTS FOR IRELAND OF HIGH OIL AND GAS PRICES 17 Oil and Gas Prices and their DeterminantsChapter 1. Oil and Gas Prices and their DeterminantsThis ... 07Chapter3.Economic and SocialImpactsofthreeOil and Gas PriceScenarios. 09Chapter4.Ireland’sdependenceonOil and Gas.  15Chapter5.Options and actionstoreduceexposuretoHighOil and Gas Prices. ... IRELAND OF HIGH OIL AND GAS PRICES Pathways to risk mitigation and a low carbon future Pathways to risk mitigation and a low carbon future THE ECONOMIC IMPACTS FOR IRELAND OF HIGH OIL AND GAS...

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MANAGEMENT OF OESOPHAGEAL AND GASTRIC CANCER ppt

Danh mục: Sức khỏe giới tính

... consent and local clinical governance committee support. The routine use of epidural analgesia is recommended in gastric and oesophageal cancer surgery. D4Treatment and survivalSurgery and ... cancer of the oesophagus and for oesophagogastric junction cancer. Deprivation is a risk factor for development of squamous cancer of the oesophagus and for gastric cancer. Tobacco smoking ... patients with oesophageal tumours with a gastric component, and in patients with gastric tumours being considered for surgery where full thickness gastric wall involvement is suspected. CMRI...

12
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Effect of soaking and gaseous treatment on GABA content ingerminatedbrownrice

Danh mục: Sinh học

... rice (GBR), we processed grain of cultivars with a large germ by soaking and gaseous treatment. After soaking for 3 h and gaseous treatment for 21 h at 35 °C, the content of c-aminobutyric acid ... (control), GBR (soaked at 35 °C for 24 h), and GBR–SGT (21 h gas at 35 °C). In GBR, contents ofaspartic acid, serine, asparagine, and glutamic acid weredecreased, and others were increased. Amino acids ... GBR by soaking and gaseous treatment(GBR–SGT)Washed grains (100 g) of all ﬁve cultivars were soaked inwater at 35 °C for 24 h. After germination, the wat er wasdrained oﬀ and grains were...

5
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crystalline structure, defects and gas sensor response

Danh mục: Vật lý

... to NO2 and H2S of gas sensors based on differentlyannealed WO3. Thick-ﬁlm gas sensors based on differentlyannealed WO3nanopowders (400 and 700 8C) were pre-pared and their gas- sensing ... SpainAbstractStructural and NO2 and H2S gas- sensing properties of nanocrystalline WO3powders are analysed in this work. Sensor response of thick-ﬁlm gas sensors was studied in dry and humid air. ... temperatures for thedetection of our target gases (between room temperature and 300 8C) in order to better relate structural and gas- sensing properties.Sensors and Actuators B 93 (2003) 475–485*Corresponding...

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electrical and gas - sensing properties of wo3 semiconductor material

Danh mục: Vật lý

... concentration of NOx gas [6]. However,most reports focused on the NOx gas sensors, and thestudy of sensing to other gases was rare. In this paper,we have investigated the electrical and gas- sensingcharacteristics ... theother hand, the sensitivity of sensor to other gases suchas petrol, butane and methane is very low, though gas concentration is 1000 ppm.Fig. 6 shows the relationship between sensitivity and sample ... a-Fe2O3 and so on. Thesecandidates have non-stoichiometrics structures, so freeelectrons originating from oxygen vacancies contributeto electronic conductivity [1]. The demands for accurateand...

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glucose - mediated hydrothermal synthesis and gas sensing characteristics of wo3 hollow microspheres

Danh mục: Vật lý

... theeffective gas diffusion (Fig. 5). The gas response was improved fur-Fig. 7. Dynamic sensing transients of (a) R30-RH and (b) R30 sensors and (c) gas responses (Rg/Ra) of R30-RH and R30 sensors ... of those ofthe other gases. These results demonstrated the high gas response and selective detection of WO3nano-porous microspheres to NO2.The selective detection and gas responses were enhanced ... reported higher gas responses.The higher gas response of the R30 microspheres than thoseof the R5 and R05 powders was attributed to the higher surfacearea for gas sensing reaction and the large...

7
793
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large - scale synthesis and gas sensing application of vertically

Danh mục: Vật lý

... nanorod arrays and commercial WO3powders.(b) Sensing responses vs. gas concentrations of various gases, including 1-butanol,acetone, toluene, 2-propanol, acetic acid, ethanol, gasoline, and heptane.Sensors ... ina test gas could be measured. The gas sensing response is deﬁnedas the ratio of the stationary electrical resistance of the sensor inair (Rair) to the resistance in the test gas (R gas ), ... organic solvents and fuels, including acetone, ethanol,propanol, butanol,toluene, heptane, acetic acid, and gasoline. Someof these chemicals are very important industrial raw materials, and the others...

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recent advances in wide bandgap semiconductor biological and gas sensors

Danh mục: Vật lý

... in gases and liquids, ﬂue gas and ﬁre detection, liquid quality sensors, biosensors and medical sensors. Some of the major applications in the home include indoor air quality and nat-ural gas ... thin ﬁlm and nanowire wide bandgap semiconduc-tors, principally GaN, InN, ZnO and SiC, for sensing of gases, heavymetals, UV photons and biological molecules. For the detection ofgases such ... metabolites and markers, and this can be valuable in measuring both medication adherence and in determining theblood levels of these drugs and medications. Some of today’s blood and urine-based...