简介：Aspectraldiagnosticsofcomplexareplasmausingmultiplespectralinformationofareself-emittingispro-posed.Thismethodisabletosimultaneouslydeterminecomponentdensities,thecorrespondingtemperatureandtheirdis-tributionsbyafewlineintensitiesmeasurent.Theprincipleofthemethodandtherelevantmeasuringsystemarede-scribed.Anequationsystemisestablishedforcomputationofthestatevariablesinareplasma.Anexperimentunderweldingareconditionismadeasanapplicationofthemethod.Theeffectsofprobableerrorsourcesonthemeasurementarealsoanalysed.

简介：１ＩｎｔｒｏｄｕｃｔｉｏｎＮｏｒｆｌｏｘａｃｉｎｂｅｌｏｎｇｓｔｏｔｈｅｃｏｍｐｏｕｎｄｏｆｔｈｅｓｅｒｉｅｓｏｆｃａｒｂｏｓｔｙｒｉｌｃｏｎｔａｉｎｉｎｇｆｌｕｏｒｉｎｅ．Ｉｔｉｓａｂｒｏａｄｓｐｅｃｔｒｕｍａｎｔｉｍｉｃｒｏｂｉａｌ，ａｎｄ...

简介：Inthepresentpaper,thegraphicalmethoddeterminationofoptimalweldingparametersofGMAWisdescribed.Somequalitycomplexcriteriathataretheratioofweldsizeshavebeenproposed.Thesecriteriaallowoptimizingtheshapeoftheweldmetalzone,reducingthelikelihoodofhotcracksformation,andreducingthestressconcentrationoftheweldatthetoe.Intheproposedmethodology,theearlierdescribedequationsconnectingtheweldingparametersandthewelddimensionsofmildandlow-alloysteelsareexplored.Determinationoftheoptimalweldingparametersiscarriedoutgraphicallytakingintoaccountthevarianceoftheweldingparameters.Anexampleofusingtheproposedmethoddestinedtodeterminetheoptimumweldingparametersisprovided.Itisshownthatitsaccuracyissufficientlygoodforapracticalapplication.

简介：Inthispaper,theX-raynondestructivetestmethodofsmalldefectsinprecisionweldmentswithcomplexstructurewaspresented.Toresolvethedifficultyofdefectsegmentationinvariablegreyimage,theimageprocessingbasedonVisualBasicprogrammingmethodwasadopted.ThemethodsofautomaticcontrastandpartialgreystretchwereusedtoenhancetheX-raydetectionimagewhichhasrelativelylowcontrast,thenautomaticthresholdmethodwascarriedouttosegmentthetwohighintensityzones,andweldzoneswhichcontainthesmalldefectswasextracted.Smoothingandsharpenprocessingwereproceededontheextractedweldzones,andsmalldefectsinX-raydetectionimageofweldmentswithcomplexstructureweresegmentedbyusingthemethodofbackgroundsubtractionintheend.Theeffectsofrasterwereeliminated,andbecauseofthattheimageprocessingwasonlyproceededontheextractedweldzones,thecalculatedspeedusingtheaboveprovidedalgorithmwasimproved.

简介：ThecompositionandstructureofcyclicsulfoxidederivativePd(Ⅱ)complexwereinvestigated.Thecoordinatednumberwasstudiedwithslopemethod.Thecoordinationnumberis2inloweracidity,butitis3inhigheracidity.Fourmethods,UV(ultraviolet)spectra,FrIR(Fouriertransforminfrared)spectra,1H-NMR(nuclearmagneticresonance)spectra,and13C-NMRspectra,wereusedtodeterminethecoordinatedatomincomplex.PdiscoordinatedwithOandSatominS=Ogroupinloweraciditymedia.Theconversionofcoordinationbondappearswithanincreasingtime.PdiscoordinatedwithSatominS=Ogroupinhigheraciditymedia,andinter-ligand-transferreactionoccurs.

简介：ThetreatmentoftheGacuncomplexCu-PbbulkconcentratewithhighZn,Ag,etc.,byoxygenpressureacidleachingwasstudied.Theprimarycopperandleadmineralsintheconcentratearetetrahedriteandgalena.Thetreatmentoftetrahedritewasrarelystudied,andmostofsilveroccurredinthemineraltoo.Theoptimumoperatingparametersofoxygenpressureacidleachingwereestablishedbyconditionaltests.Undertheseparameters,theresultofpilotscaletestshowedthattheleachingpercentagesofcopperandzincwereseparatelyashighas98.9wt.％and94.9wt.％,whileleadandsilverweretransformedintosulfateandsulfideprecipitations,respectively.Thecopperandzincinlixiviumwerereclaimedbyextraction-electrowinningandpurification-electrowinning,respectively,andtheleadandsilverintheresiduewerereclaimedseparatelybycarbonatetransformation-silicofluoricacidleachingandthiourealeaching.

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简介：AnewtypeofcomplexsolidsuperacidcatalystWO3-ZrO2-SO42-withanacidstrengthH0≤-16.04waspreparedbykneadingZr（OH）4oramorphousZrO2withtungsticacid（H2WO4）（W/Zr=0.15）,followedbyexposingthiscomplexhydroxidesto0.5tool/LH2SO4,calcininginairat700～800℃for3h.ThiscatalystpossessesbothstrongBronstedacidityandstrongLewisacidityexperimentallyshowedbyIRobservationofpyridineabsorbedonit.XPSandAEStechniqueswereemployedtoexaminethevalencestatesoftungsten,zirconium,sulfurandtheirinteractions.Thestructureofsulfurspecieswasstudiedbyinfraredspectroscopyandastructuremodelofactivesitewasproposedupontheseresults.