简介:Avolume-basedmethodformeasuringparticle-sizedistribution(PSD)fractaldimensionsofporousmediumswasdevelopedbyemployinglasersize-analyzingtechnology.ComparedwithconventionalapproachesofusinghydrometerorscreentodeterminePSD,thismethodcanavoidcalculationerrorsandmeasuresmallersize-scaleporousmedium.Inthispapertheexperimentalporousmediumswerebrownsoil,kaolinandsandsoil.Amicro-orderofmagnitude(10^-5m)inparticle-sizeintervalcouldbeshowninPSDresultsofbrownsoilandkaolin.Theexperimentsindicatedthatbrownsoilhadanearlymono-fractalPSDcharacter,whilekaolinandsandsoilshowedmulti-fractalPSDcharacters.Bytheadsorptionisothermexperiments,thePSDfractaldimensionsofthesandsoilwerealsofoundtokeepalinearlyincreasingrelationwiththelinearadsorptiveparametersofthesoilsindifferentintervalstoadsorbbenzenefromaqueoussolution.
简介:ThecomparativenumericalandanalyticalanalysisofscintillationindicesofthevortexLaguerre–GaussianbeamandthenonvortexdoughnutholeandGaussianbeamspropagatingintherandomlyinhomogeneousatmospherehasbeenperformed.Ithasbeenfoundthatthedependenceofthescintillationindexattheaxisoftheopticalvortexontheturbulenceintensityatthepathhastheformofaunitstep.Ithasbeenshownthatthebehaviorofscintillationsinthecrosssectionsofvortexandnonvortexbeamsdifferswidely.DespitethescintillationindexofvortexbeamshasbeencalculatedonlyforthesimplestLG10mode,theobtainedresultsarequitegeneral,becausetheydemonstratethemainpropertiesinherentinscintillationsofvortexbeamsofanytype.
简介:VegetativecellsofPorphyrayezoensisareisolatedwithseasnailenzymeandculturedonthesolidifiedagarmedium.Theresultsofexperimentsshowthattheisolatedcellscansurvive,divideandregeneratewellonthemediumsolidifiedwithagar.Thefirstdivisiononthesolidmediumstartsafter7days'culture,4dayslaterthantheliquidculture.Thesurvivalrateofisolatedcellsis71.3%onthesolidmedium,lowerthanthe86.2%ofthatinseawater.Thalli,thalloids,conchocelis,spermatangiaandmulticellularmassesaredevelopedonthesolid/mediuminthefirstmonth,slowlybutnormally.Spermatangiasacsdisappearwithin4weeks.Withoutaddingnutrientliquidontothesurfaceofsolidmediumorinjectingseawaterundertheagarlayerinordertokeepmoisture,thethalliandcellgroupsreleasemonosporestoformnewthalliinsteadofenlargingtheirareasafter5weeks'culturing.Somemonosporesregeneratenewthalli.Othermonosporeslosetheirpigmentsandminimizetheirvolumeanddividequicklytoformlightpinkcalli.After16weeks,numerouscallicanbeseenonthesolidmediumandafter24weeks'culturing,almostonlycalliandconchoceliscanbeseen.Ifthecalliareimmersedinseawater,themonosporesarereleasedandmaydevelopintoyoungthallus.
简介:Inthispaperweconsiderthefollowingproblemui=△u^m+bi(u^n)xLetu=u(x,t)beacontinuousweaksolutionoftheequationinR^N×(0,T)forsomeT>0.Thenweconclude;CorrespondingtouthereisauniquenonnegativeBorelmeasurevonR^Nwhichistheinitialtraceofu;thereistheglobalinequalityofHarnacktypeforu;theinitialtracevmustbelongtoacertaingrowthclass;consequently,bycombiningtheresultsmentionedaboveau-niquenessconclusionisestablished.
简介:Basedonthegeneralsolutionofthree-dimensionalproblemsinpiezoelectricmedium,withthemethodofGreen’sfunctins,axisymmetricboundary-valueproblemsarediscussed.Thepurposeofthisresearchisforanalyzingtheeffectiveonmechanicsandelectricityofthepiezoelectricceramicscausedbyvoidsandinclusions.Thedisplacement,tractionandelectricGreen’sfunctionscorrespondingtocircularringloadsactingintheinteriorofapiezoelectricceramicareobtained.AcylindricalcoordinatesystemisemployedandHankeltransformareappliedwithrespecttoradialcoor-dinates.ExplicitsolutionsforGreen’sfunctionsarepresentedintermsofinfiniteintegralsofLipshitz-Hankeltype.Bysolvingatractionboundary-valueproblem,thesolutionschemeisillustrated.
简介:Inthispaper,theinfluenceofworkingelectrolyteonhigh-frequencyelectricalperformanceofwettantalumcapacitorsisstudied.EmphasisisespeciallyputonthestudyofthecontributionofdepolariserinreducingEquivalentSeriesResistance(ESR).Accordingtothetheoryofdepolarizationinelectrochemistryandthetheoryofcathodecapacitanceofelectrolyticcapacitor,differentkindsofdepolarisersareaddedseparatelyintotheforegoneelectrolyte.Thencapacitorsareassembledwithtantalumcoresdippedwiththecompoundedelectrolytes.ThebestdepolariseranditsconcentrationinthewholeelectrolytecouldbeselectedaccordingtothetestresultsofthecapacitanceandESRofthecapacitors.TheresultsofourexperimentshowthatdepolariserFe2(SO4)3usedinworkingelectrolyteof100V/100μFwettantalumcapacitorscanhelptoobtainlowerESRandhighercapacitanceatfrequencyfrom0.1kHzto100kHz.
简介:BambooOSB(BOSB)mediumexperimentallineandkeyequipmentsarepresentedforthefirsttimebasedontheanalysisofBOSBproductiontechnologiesandprocessesrequirements.ComponentofBOSBmediumexperimentallineandkeyequipmentsstated.ThepaperillustratedBOSBflaker,glueblender,orientingformer.Thenmediumexperimentallineisgiventoagreatdealoftestrunandoptimization.ThetestsindicatedthatthemediumexperimentallineoperatedsmoothlyforproducingBOSB.TestedBOSBkeyperformanceindicatorswerehigherthantheLY/T1580-2000(OSB/4).
简介:Theadsorptionoffreeacidoflowconcentrationbycrosslinkedchitosanresinwasfollowedbyelectrochemicalexperimentaltechnique.Theeffectofacidconcentrationandthemediaonadsorptionwasdiscussed.Theexperimentalresultsshowthatboththeapparentrateconstantandtheinteractionenergybetweentheadsorbentandadsorbatearedecreasedwhiletheconcentrationofhydrochloricacidisincreased.Intheadsorptionsystem.theadsorptionwaseffectedbyaddiitonoforganicsolvent.
简介:高周波的地震变细通常被归因于有弹性的吸收。在这篇论文,我在场高周波的地震变细上的三研究并且建议物理机制源于有弹性的显微镜的多重散布波浪的干扰。首先,我在基于为波浪繁殖的基本单位是一个nano团点的概念的二阶段的媒介在波浪繁殖上建议一个新理论。由于毛孔液体和岩石框架的弹性变化,微多重散布波浪将在通过二阶段的媒介和他们的干扰的震波的波长出现,重叠将产生高周波的地震变细。第二,我在场由当模特儿的地震播送波浪的频率反应的研究与比毛孔直径没有大的厚度薄层。结果显示高周波的震波在一个近表面的水地区稍微稀释,但是在一个近表面的煤气的地区显著地腐烂。第三,我在Songliao盆用双井的射击在近表面的水和煤气的地区里分析地震变细特征,并且证明高周波的震波在水地区稍微稀释,但是在气体,宣传的1601600Hz挥动的地区显著地腐烂。来自观察与当模特儿的结果与一致的地的地震变细特征。理论上从这些研究得出的结论支持地震变细恢复。