简介:〔摘要〕从物理课堂教学语言的特点、运用技巧及表达等阐述了物理教师的教学语言在物理教学中的重要性,如何从教学实际出发,取得最佳效果。
简介:Sino-U.S.economicandtraderelationsaremovingintoaneraof"competitiveinterdependence".Aneconomicandtraderelationshipthatismutuallybeneficialandwin-wininessenceisfacingchallengesthatfeatureacompetitive,zero-sumgamewhichpursuesrelativegains.Mutualsuspicionisthepsychologicalrootofthezero-sumgamebetweenChinaandtheU.S.whilethecognitiverootoftheirmutualsuspicionisthesenseofuncertaintyandlackofself-confidenceaboutthefutureofitsownandtheotherside.
简介:TheU.S.-drivenTPPhascaughttheattentionoftheregionandisbringinguncertaintytoEastAsianeconomicintegration.China,theU.S.andJapanhavetakendifferentpositionsontheTPPitself.TheU.S.isactivelyparticipatinginTPPnegotiationsandtryingtodominateit.JapanregardstheTPPasatoolwithwhichitcanfurtherexploremarketsaswellasstrengthenitsrelationshipwiththeU.S..ChinaiscurrentlyassessingtheU.S.shiftineconomicstrategytowardsEastAsiaandthepotentialimpactsofTPPexpansion.
简介:Objective:Flupirtineisanon-opioidanalgesicwithoutantipyreticorantiphlogisticpropertiesbutwithfavorabletolerabilityinhumans.Thisanalgesicalsoexhibitsneuroprotectiveactivities.Furthermore,flupirtineantagonizesglutamateandNMDA-inducedintracellularlevelsofCa2+andcounteractstheeffectsoffocalcerebralischemia.Althoughflupirtinehasbeenusedtorelievepaincausedbydifferentdiseasesandclinicalprocedures,informationonthesafetyandefficacyofflupirtineislimited.ThepresentstudywasconductedtoinvestigatetheneuroprotectiveeffectsofflupirtineonU373malignantglioma(MG)celllines.Methods:CellviabilityandcellcycleanalysiswasperformedbyMTTassayandflowcytometry,respectively.Results:VariationsinthegrowthofU373MGcellsin5mMN-methyl-D-aspartate(NMDA),1mMflupirtine,andcombinedtreatmentindicatedtheantagonisticeffectsofNMDAandflupirtineonMGcelllines.Thevariationinthepercentageofgatedcellpopulationindifferentcellcyclephasesshowedsignificantvariationsafter48hoftreatment.Conclusion:FlupirtinehasneuroprotectiveeffectofonU373MGcells,whichlimitsitsuseinthepainmanagementofbraintumors.Thispropertywarrantsfurtherstudiesusinganimalmodelsandlarge-scaleclinicaltrials.
简介:Unlikethetraditionalrelationshipbetweenestablishedpowersandemergingpowersinmodernhistory,therearefavorableconditionsunderwhichChinaandtheUnitedStatescanpreventmajorconflictsineconomic,political,andsecurityareas.Thepressingtaskforthetwosidesnowistoenhancecommunicationandmutualunderstanding,andreduceordispelthemisperceptionssoastobuildupmutualstrategicassuranceandreduceoralleviateirrationalstrategicanxieties.