学科分类
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5 个结果
  • 简介:XinhuaNewsAgency,Beijing,March25OnMarch25,MinistryofEducationissuedNoticeoftheStateCouncilDegreeCommitteeonSpecialEvaluationResultofDegreeConferralInstitutionsandRelevantHandlingOpinionsin2014.TheNoticestipulates

  • 标签: 教育机构 教育部 学位 评价 撤销 委员会
  • 简介:ForagraphG,wedenotebyp(G)andc(G)thenumberofverticesofalongestpathandalongestcycleinG,respectively.ForavertexvinG,id(v)denotestheimplicitdegreeofv.Inthispaper,weobtainthatifGisa2-connectedgraphonnverticessuchthattheimplicitdegreesumofanythreeindependentverticesisatleastn+1,theneitherGcontainsahamiltonianpath,orc(G)≥p(G)-1.

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  • 简介:Theexfoliationdegreeofgraphiteoxideintographeneoxideplaysanimportantroleinthemassiveproductionmethodofreducedgrapheneoxide.Itissignificanttofindasimpleandfeasiblemethodtoanalyzetheexfoliationdegreeofgraphiteoxide.Inthepresentwork,graphiteoxidewassynthesizedbyamodifiedHummersmethod,andthengrapheneoxidecolloidswereobtainedbyexfoliationofgraphiteoxidedispersedinde-ionizedwater.UV-visiblespectroscopywasusedtocharacterizetheabsorptionofthegrapheneoxidecolloids,andtheconcentrationofgrapheneoxidecolloidsindicatedbyabsorptionareaofUV-visiblespectrawasstudied.Resultsshowthatthereisarelativelystablerelationshipbetweenthem,indicatingthatUVvisiblespectroscopyisapotentialmethodforanalyzingtheexfoliationdegreeofgraphiteoxideintographeneoxide.

  • 标签: 紫外可见光谱 氧化石墨 剥离 紫外-可见光谱 吸收面积 生产方法
  • 简介:Paddyricesampleswereparboiledbysoakingat65°Cfor180minandsteamingat96°Cfor2–10min,andthendriedtoachievethefinalmoisturecontentof11%±1%.Thedegreeofstarchgelatinization(DSG)andseveralqualityattributes(headriceyield(HRY),colorvalueandhardness)ofparboiledriceweremeasured.ResultsshowedthatDSG(46.8%–77.9%),colorvalue(18.08–19.04)andhardness(118.6–219.2N)allincreasedfollowingsteaming.Incontrast,theHRYincreased(64.8%–67.1%)forsteamingtimesbetween2–4minbutdecreased(67.1%–65.0%)forsteamingtimesbetween4–10min.LinearrelationsbetweenDSGandcolorvalue(R~2=0.87),andDSGandhardness(R~2=0.88)wereobserved.ThesuitableDSGofparboiledriceleadingtothehighestHRYwasfoundtobe62.5%,obtainedfollowing4minofsteaming.

  • 标签: 水稻科学 农业