简介：Alkalimetalhydroxideandhydridecompositesystemscontainbothprotic(HbondedwithO)andhydridichydrogen.Theinteractionofthesetwotypesofhydridesproduceshydrogen.Theenthalpyofdehydrogenationincreasedwiththeincreaseofatomicnumberofalkalimetals,i.e.,-23kJ/molH2forLiOH-LiH,55.34kJ/molH2forNaOH-NaHand222kJ/molH2forKOH-KH.Thesethermodynamiccalculationresultswereconsistentwithourexperimentalresults.H2wasreleasedfromLiOH-LiHsystemduringballmilling.ThedehydrogenationtemperatureofNaOH-NaHsystemwasabout150℃;whereasKOHandKHdidnotinteractwitheachotherduringtheheatingprocess.Instead,KHdecomposedbyitself.Inthesethreesystems,NaOH-NaHwastheonlyreversiblehydrogenstoragesystem,theenthalpyofdehydrogenationwasabout55.65kJ/molH2,andthecorrespondingentropywasca.101.23J/(molH2K),sothetemperatureforreleasing1.0barH2wasashighas518℃,showingunfavorablethermodynamicproperties.TheactivationenergyforhydrogendesorptionofNaOH-NaHwasfoundtobe57.87kJ/mol,showinggoodkineticproperties.

简介：JC496-921ScopeThisstandardspecifiestheclassification,technicalrequirements,testmethods,inspectionrules,marking,packing,transportationandstorageofalkaliresistantbricks.

简介：Ultramafichypoxenolithsfoundinthealkali-richporphyryintheLiuheVillage,Heqing,Yunnan,China,areofgreatsignificanceinunderstandingtheoriginandevolutionoftheporphyry.Thispaperdiscussesthemineralogicalfeaturesofthehypoxenoliths.Itshowsthatthexenolithsarecharacterizedbytheuppermantlerocksmodifiedtocertainextentbytheenrichedmantlefluidmetasomatisminthemantleenvironment,withtheenrichedmantlepropertyofIow-degreepartialmelting.Thisconstitutestheimportantmineralogicalevidenceforthepetrogenesisandmineralizationofalkali-richporphyry.

简介：

简介：Theabsorptionoffreealkaliatlowconcentrationbysubacidresinwastracedwithelectricconductancemethod,theeffectoftemperatureontheadsorption,theactivationenergy,ofadsorption(Ea)andinteractionenergy(U)wasstudied.Theresultshowedthat,theprocessoflowconcentrationalkaliadsorptionbysubacidresinwasinaccordancewithmechanismofmonomolecularlayerabsorption,inaddition)withtheincreasingoftemperature,theinteractionenergybetweenadsorbateandsorbentincrease,sodidthesurfaceadsorptionrate(k),andlinearcorrelationexistedbetweeninteractionenergy(U)andtemperature(T).

简介：

简介：无

简介：氧化镁修正的一种新类型激活碱的水泥被准备，水和产品的力量，背景时间，收缩比率和裂开的行为，以及作文和结构被调查。结果显示这水泥的设定的时间类似于平常的商业水泥的；它的力量到达42.5度水泥的标准，因为氧化镁补偿的苍蝇灰和收缩的微总数的效果，它的裂开的抵抗显著地被改进了。

简介：InNorthXinjiangthereisanalkaligranitebeltextendingintheNW-SEdirectionalongthesouthernbandoftheUlungurRiverandrunningparalleltothesuturezone,i.e.,Aermantai-ZhahebaOphioliticMelangeZone,betweentheJunggarPlateandtheAltayOrogenicBelt.Whole-rockRb-SrisochronagesoftheUlunguralkaligranitesarewithintherangeof292-309Ma,showingthattheyweregeneticallyconnectedwiththelatestepisodeofHercynianmagmatismsubsequenttothesyncollisionS-typeandpost-collisionupliftingI-typegranitoidsintheAltayregion.Thealkaligranitesareminer-alogicallycharacterizedbytheoccurrenceofaegirineandarfvedsoniteandchemicallybyhighsiliconandalkali,lowcalciumandmagnesiumandabundanthigh-fieldelements,beingtypicalA-typegranites.ThealkaligraniteswereformedinthefinalstageoftheHercyniancalc-alkalinemagmaticcycleinaveryshortperiodoftime.Theyareinlinewiththepost-orogenicA-type(PA-type)granites,implyingthatthetectonicregimewaschangedfromcompressiontoextension.

简介：Thenon-edibleoilsarebelievedtobeoneofthemajorfeedstockfortheproductionofbiodieselinfuture.Inthepresentstudy,weinvestigatedtheproductionofJatrophaoilmethylesters(JOMEs)viaalkali-catalyzedtransesterificationroute.ThebiophysicalcharacteristicsofJatrophaoilwerefoundwithintheoptimalrangeinaccordancewithASTMstandardsasasubstitutedieselfuel.Thechemicalcompositionandproductionyieldofas-synthesizedbiodieselwereconfirmedbyvariousanalyticaltechniquessuchasFT-IR,1HNMR,13CNMRandgaschromatographycoupledwithmassspectrometry.Ahighpercentageconversion,～96.09%,offattyacidsintoesterswasachievedunderoptimizedtransesterificationconditionswith6:1oiltomethanolratioand0.9wt%NaOHfor50minat～60°C.Moreover,twelvefattyacidsmethylesters(FAME)werequantifiedintheGC/MSanalysisanditwasinterestingtonotethatthemassfragmentationpatternofsaturated,monounsaturatedanddiunsaturatedFAMEwascomparablewiththeliteraturereportedvalues.

简介：FrequencyupconversionofEr3+inalkalilanthanumgallateglasses(Na2O-La2O3-Ga2O3orNLG)wasinvestigated.Visibleemissionsat532,546,and660nmcorrespondingtothe2H11/2→4I15/2,4S3/2→4I15/2,and4F9/2→4I15/2transitionswereobservedundercontinuouswaveexcitationat980nm.Thequadraticpumppowerdependenceoftheseemissionsindicatedatwophotonupconversionprocess.Atapumpintensityof52W·cm-2at980nm,frequencyupconversionefficienciesof1.1×10-2and2.7×10-3wereobtainedforgreenandredemissions,respectively.

简介：Anintactalkalimarshsoil(MS)coreandanagriculturesoil(AS)corewerestudiedbythesimulatedtestinordertogetthecomparisonofthenutrientsretentioninalkaliMSandAS.ThesoilcoresextractedfromtheXianghaiWetland,westernJilinProvince,China,wereleachedwithsolutioncontainedcarbon,nitrogenandphosphorus.Thentheeffluentwaterfromtheoutletsofsoilcorewithdifferentdepthswasmeasured,includingchemicaloxygendemand(COD),totalphosphorus(TP),phosphate(PO3-4-P)andnitrogenexistedasnitrate(NO-3-N),nitrite(NO-2-N)andammonianitrogen(NH+4-N)andthetotalnitrogen(TN)intheeffluentwater.CODandTParedecreasedwiththedepth,thechangingtrendsofTN,NO-3-NandNH+4-NcontentsaresimilartoCODandTP,whereasNO-2-NinbothMSandASeffluenthavealittletransitionat40cmdepth.ItissimilarefficiencyofMStoASinsignificantlycuttingdownCOD,TP,PO3-4-P,TN,NO-3-N,NH+4-NandNO-2-Ninnutrientwater.ThefunctionofMSwouldbesameefficiencyofthenutrientsretentionastheAS.AlthoughtheSOMandpHhavesomeimpactsonnutrientsretentioninthesoil,theMSwithhighersoilorganicmatter(SOM)andpHhavethesameeffluentwaterastheASwiththelowerSOMandpHatthedepthof60cm,thebottomofthesoilcores.

简介：FivenearlyE-W-trendingalkali-richigneousrockbeltsaredistributedfromnorthtosouthinnorthernXinjiang,andtheyarecomposedmainlyofriebeckite,K-feldspargraniteandhigh-Kandmedium-Kcalc-alkalinevolcanicrocksandshoshonite.TheyweremainlyemplacedoreruptedbetweentheCarboniferousandPermian.ThecompositionsofSr,Nd,Pb,andOisotopesimplythattheirprincipalresourcematerialsarederivedfromtheuppermantleorjuvenilecrust,indicatingobviouscontinentalgrowthinthePhanerozoic.Thetraceelementassociationimpliesthattheirtectonicsettingsarewithinplateandvolcanicarcforalkali-richgranites,andpost-collisionalarc,lateoceanicarcandcontinentalarcforalkali-richvolcanicrocks.AnarchipelagomodelwassuggestedforthetectonicevolutioninnorthernXinjiang.Itcanbenamedthecentral-Asia-typeorogeny,whichisdifferentfromthesocalledcircum-Pacificocean-continent-typetectonicsortheAlpine-Himalayancontinent-continent-collisional

简介：碱的绝缘的表演激活炉渣(AAS)水泥(灰)浆在1～1000MHz的频率范围被调查。试验性的结果显示出不稳定的绝缘的性质变硬浆糊被免费的水的部分主要在浆糊影响或吸收了水从周围，然而并非包括水和水；微观结构。免费的水被热处理完全在105°C消除大约4个小时，；当时，它的绝缘的损失是沮丧的；但是与在空中的暴露时间增加，在周围的空中的免费的水吸附做了绝缘的性质变硬坏的水泥(灰)浆。温度；环境的相对湿度是免费的水吸附的关键因素；因此，如果绝缘的常数上的免费的水的影响被测量或消除，基于水泥的材料可以在湿度被使用敏感材料或绝缘的材料领域。

简介：Objective:Toobservetheexpressionoflamininandfibronectininalkali-burnedcorneasinrats.Methods:Atotalof18normalWistarratswererandomlydividedinto6groups(n=3ineachgroup).Foreachrat,oneeyewasinjuredbyalkaliburn,theotheronewastakenasthenormalcontrol.Thenallthecorneasweresurgicallyremovedandtheexpressionoflamininandfibronectinwasobservedwithimmunohistochemistryrespectivelyat7hours,1day,3days,7days,14daysand28daysafteralkaliburn.Results:Comparedwiththatofthenormalcontrols,theexpressionoflamininandfibronectinoftheburnedeyeswasdramaticallyhigherat7hours,reachedpeakat14daysanddecreasedtothenormallevelat28daysafteralkaliburn.Conclusions:Intheprocessofwoundhealingafteralkaliburn,theexpressionoflamininandfibronectinincreasesdramatically,whichsuggeststhatlamininandfibronectinmayparticipateintheprocessofcornealwoundhealing.

简介：碱的特征激活炉渣(AAS)，港口陆地水泥(PC)被观察在上多尺度，裂缝和破裂节与肉眼，和SEM被观察，AFM被用来在测微计上学习PC和AAS之间的结构形态学差别到nano米规模。试验性的结果显示AAS浆糊有象骨折质地一样的土壤，它由组成主要C-S-H胶化但是晶体的缺乏，并且它有一个很强壮的趋势缩小并且裂开。AAS浆糊比PC稠密得多、更同类，并且在AAS粘贴在nano上放大C-S-Hnano粒子小得多并且包装比PC浆糊稠密的大部分。

简介：<正>AfterstudyingsystematicallyPetrology,Mineralogy,Petrochemistry,REEgeochemistryandstrontium,sulphur,leadisotopeofthealkali-richgraniteprophyrydistribuledextensivelytheYangtzeplatfromwesternmargin’salkali-richgraniteporphyrywepointoutthatthealkali-richgraniteporphyryhavethepropertiesofnewintrusiveages,Rangeoftheisotopeageisform36Mato51Ma,theybelongtotheHimalayadate,Mainmineralcomponetsofthealkali-richgraniteporphyryconsistofk-fcldspar(35~45x),quartz(36x±)plagioclase(15x±)andbiotitc(10x±).Accessorymineralsoftherockbelongtotypeof

简介：Theadsorptionpropertytheoperatinglife,theoperatingexchangecapacityandregenerationofD412macroporousphosphonomethylaminachelatingresinforremovingCa2+,Mg2+andFe2+fromhighpHbrineofalkaliproductionbyionicmembranewereinvestigatedTheresinshowedgoodphysical-chemicalandkineticproperty,highexchangecapacity,excellentdurability.

简介：ZSM-48zeoliteswithvariousSi/AlratioswerehydrothermallysynthesizedintheH2N（CH2）6NH2（HDA）-containingmedia.TheobtainedsampleswerehighlycrystallizedwithminormixedphasesasevidencedbyX-raypowderdiffraction（XRD）.ThealkalinetreatedZSM-48zeolitesmaintaineditsstructureunderdifferentconcentrationsofNaOHaqueoussolution.Microporesremainedunchangedwhilemesoporeswithwideporesizedistributionformedafterthealkalinetreatment.Thesurfaceareaincreasedfrom228to288m2/g.TheBr?nstedacidsiteshadlittlealterationwhileanobviousincreaseofLewisacidsiteswasobserved.Thehydroisomerizationofhexadecanewasperformedasthemodelreactiontotesttheeffectsofthealkalitreatment.Theconversionofhexadecanehadalmostnochange,whichwasattributedtothepreservationoftheBr?nstedacidsites.Whilehighselectivitytoiso-hexadecanewithanimprovedisotonormalratioofalkaneswasduetothemesoporeformationandimproveddiffusivity.

简介：Metal-organicframeworks(MOFs)haveattractedmuchattentionasadsorbentsfortheseparationofCO2fromfluegasornaturalgas.Here,atypicalmetal-organicframeworkHKUST-1(alsonamedCu-BTCorMOF-199)waschemicallyreducedbydopingitwithalkalimetals(Li,NaandK)andtheywerefurtherusedtoinvestigatetheirCO2adsorptioncapacities.Thestructuralinformation,surfacechemistryandthermalbehaviorofthepreparedadsorbentsampleswerecharacterizedbyX-raypowderdiffraction(XRD),thermo-gravimetricanalysis(TGA)andnitrogenadsorption-desorptionisothermanalysis.TheresultsshowedthattheCO2storagecapacityofHKUST-1dopedwithmoderatequantitiesofLi+,Na+andK+,individually,wasgreaterthanthatofunmodifiedHKUST-1.ThehighestCO2adsorptionuptakeof8.64mmol/gwasobtainedwith1K-HKUST-1,anditwasca.11%increaseinadsorptioncapacityat298Kand18barascomparedwithHKUST-1.Moreover,adsorptiontestsshowedthatHKUST-1and1K-HKUST-1displayedmuchhigheradsorptioncapacitiesofCO2thanthoseofN2.Finally,theadsorption/desorptioncycleexperimentrevealedthattheadsorptionperformanceof1K-HKUST-1wasfairlystable,withoutobviousdeteriorationintheadsorptioncapacityofCO2after10cycles.