简介:本文制备了Bi2O3-Ni2O3纳米粉末,对其结构进行了表征,并研究了制备的纳米粉末对苯光催化降解的影响因素。结果表明:制备的纳米粉末由Bi2O3和Ni2O3复合而成,经750℃焙烧的光催化剂对苯光催化降解活性最高;水蒸气的加入和氧气的增加,都能促进苯的降解率增大;由Langmuir-Hinshelwood动力学模型得出苯的光催化降解反应的吸附常数和反应速率常数分别为0.1398L·μmol^-1和0.0024μmol·L-1·min^-1。
简介:Introgressionlines(ILs)derivedfrominterspecificcrossesareasourceofnewgeneticvariability.Atotalof55ILsderivedfromtwocrossesSwarna×O.nivaraIRGC81848(populationA)andSwarna×O.nivaraIRGC81832(populationB)werecharacterizedforyieldandyield-relatedtraits/QTLs.Segregationof103simplesequencerepeat(SSR)markersassociatedwithyield-relatedQTLswasstudied.PopulationAshowedanaverageof12.6%homozygousO.nivaraallelesandpopulationBshowed10.6%.Interestingly,threeSSRmarkers,RM223,RM128andRM517,showedconspicuouspatternofsegregation.ThedistributionofparentalallelesatthreelociRM223,RM128andRM517linkedtoyield-relatedtraitswasunique.Thesemarkersflankedtoseveralyield-relatedQTLs.RM223,flankingtoqyld8.3,washeterozygousinalmostallthe55ILsexceptinIL10-3SandIL131S.RM128onchromosome1andRM517onchromosome3weremutuallyexclusivein46outof55ILs.These46ILsshowedeitherofthemarkeralleleRM128orRM517fromO.nivarabutnotboth.IL166ShadbothRM128andRM517fromO.nivaraandtheotherILsshowedhomozygousSwarnaalleleatRM517exceptIL65S.Populationstructureassignedthe55ILstothreesub-populationsbasedontheirgenomicdiversity.IL65S,IL166S,IL248S,IL7KandIL250Kshowedhighyieldsinmulti-locationtrials,andIL248SwasreleasedforcultivationasDRRDhan40.
简介:摘要:随着其售货智能性越来越高,全球自助售货机行业发展规模迅速普及在国外,自动售卖机的使用已经较为成熟,给人们的生活带来很多的便利,并且节约了成本,随着我国人们日益生活质量的提高以及生活节奏的不断加快,自动售卖机服务质量也面临着提升的需要。本文着眼于通过O2O模式在高校运营自动微信咖啡机、冰淇淋机为项目的启动点,将这种能打破时间、空间的全新消费体验带入到高校的学生生活中,制定符合大学生特色的O2O模式。消费者可以通过公司的公众平台,在线上购买所有自动机的产品,O2O作为一种新型且被大众广泛接受的一种营销模式,正颠覆着人们的生活,给人们的生活方式带来全新的体验和便利,并且经常可以享受到商家的优惠活动,因为其具备有服务预约及商家活动促销等优质的体验,得到人们的普遍认可。将O2O模式与自动售货机相结合将有更大的发展空间。
简介:TheZrO2-Al2O3ceramiccompositeswerepreparedbyappropriatetechniqueswithcommercialZrO2andAl2O3powdersasrawmaterialsandY2O3asstabilizer.TheresultsindicatethatwiththeintroductionofAl2O3intotheZrO2matrixwherethequantityofadditiveY2O3is3.5%(molefraction),thegrowthofZrO2grainsisefficientlyinhibited,whichhelpstheZrO2grainsexistinametastabletetragonalmanner;thushigherstrengthandtoughnessareacquired.Whenthecontentofaluminais20%(massfraction),thebendingstrengthandfracturetoughnessofthecompositesare676.7MPaand10MPa·m1/2respectively,themechanicalbehaviorsareclosetothosepreparedwithZrO2andAl2O3powderssynthesizedthroughwetchemicalapproach.Themechanicalbehaviorsofthecompositesarewellimprovedowingtothedispersiontougheningofaluminagrainsandphasetransformationtougheningofzirconiagrains.
简介:Fivechiralstationaryphases(CSPs)wereusedtoseparatetheenantiomersofaseriesofO,O-diethyl(p-methyl-benzenesulfonamindo)-aryl(alkyl)-methylphosphonates.Achiralrecognitionmechanismwaspresentedtoexplaintheresolutionofthesecompounds.ResultsshowthatCSPwithstrongπ-acceptor3,5-dinitrobenzoylgroupandhighsterichindrancehasthebestresolutionabilityinchiralseparationofO,O-diethyi(p-methyl-benzenesulfonamindo)-aryl(alkyl)-methylphosphonates.WhenaCSPhasjustastrongπ-acceptor3,5-dinitrobenzoylorhighsterichindranceitdoesnothavegoodchiralresolutionability.ThechiralrecognitionismoredifficultwhentheCSPhasmorethanoneasymmetriccenter.