简介:SIALCHINA中国国际食品和饮科展览会是由法国爱博展览集团举办的专业食品展。自2000年以来.SIALCHINA中国国际食品和饮料展览会已成功举办了五届。SIALCHINA展会秉承其母展——SIAL巴黎国际食品展国际性、专业性、贸易性的特点,以客户服务作为展会组织工作的中心,规模不断扩大.现已成为中国国际食品第一大展,国内众多食品展中国际性最强的展会,贸易效果显著,是国内外食品厂商开拓中国大陆市场、亚洲市场和海外市场的不二选择,是不窖错过的食品贸易平台和国际合作平台。
简介:Althoughitiswellknownthatcoseismicgravitychangestakeplaceduringanearthquake,previousresearchhasnotyieldedconvincingevidencedemonstratingthatsignificantgravitychangesoccurbeforelargeearthquakes.Furthermore,evenifwesuspectthatgravitychangesoccurbeforelargeearthquakes,wehaveyettodemonstratehowtoconsistentlyobservethesechangesforusefulearthquakeforecastthatwouldbringbenefitstosociety.Weanalyzedgroundgravitysurveydataobtainedin1998,2000,2002,and2005atstationsoftheCrustalMovementObservationNetworkofChina(CMONOC)andexaminedgravitychangesbe-foretheoccurrenceofninelarge(Ms≥6.8)earthquakesthatrupturedwithinornearmainlandChinaandTaiwanfromNovember2001toAugust2008.Resultsfromthisanalysisshowthatsignificantgravitychangesoccurredacrossalargeregionbeforeeachoftheseninelargeearthquakes,andthesechangesweredetectedbyrepeatedgroundgravitysurveysthroughCMONOC.Althoughthesegravitychangesweresignificant,moreresearchisneededtoinvestigatewhetherthesegravitychangescouldbeviewedasprecursorsoflargeearthquakes.Limitationsanduncertaintiesinthedataincludesparsenessofthegravitymonitoringnetwork,longtimeintervalsbetweenconsecutivegravitysurveys,inevitablemeasurementerrors,hydrologicaleffectsongravity,andeffectsofverticalcrustalmovementsongravity.Basedontheseobservations,wemakeseveralrecommendationsaboutpossiblefuturedirec-tionsinearthquake-relatedresearchusinggravitymonitoringdata.
简介:Thispapertriestoidentifythecharactersthatmightaffectinterprovincialmigrants’decisionsandexaminehowandwhytheinftueneeofthesecharacterschangedovertimeindividuallyandsyntheticallyinChinaduring1985-2005.Wehaveinvestigatedsixtypesoffactors,namely,distance,populationdensity,income,employmentstructure,houseprice,andmigrationstock.Inaddition,weapplytheidentifiedfactorswithamultiplestepwiseregressionmodeltoalongitudinaldataset,whichconsistsofinterprovincialmigrationflowsoverthelasttwodecadesinChina.ItisfoundthatdifferentfactorshavedisparateimpactsonmigrationinChina,andtheycanbedecomposedintopushforceinoriginareaandpullforceindestinationarea.FactorsshapingChina’sinterprovincialmigrationhaveshiftedfromtraditionalfactorssuchasdistancetoeconomicfactorssuchasincomeandemploymentstructure.Thispapersuggeststhatmoreattentionshouldbepaidtoobtaindetailedmigrationdatawithspatialinformationanddevelopapplicablemodelsformigrationprocesses.OuranalysisprovidesreferencesfordevelopmentplannersandpolicymakerstodevelopsoundpopulationpoliciestoachieveregionalsustainabledevelopmentinChina.
简介:网络主要生产率(NPP)是代表生态系统的结构和函数的最重要的索引。NPP能被动态全球植被模型(DGVM)模仿,它被设计相对环境变化代表植被动力学。这研究在气候,土壤,和地形学上与数据基于DGVM综合生物圈模拟器(朱鹭)模仿了瓷器生态系统的NPP。在瓷器陆上的生态系统的NPP模拟的朱鹭的适用性首先被验证。有另外的相关研究的比较显示范围和模拟的吝啬的价值通常在观察的限制以内;全面模式和全部的年度NPP接近与另外的模型一起进行的模拟。模拟基于遥感离NPP评价也靠近。确认证明那朱鹭能在瓷器自然生态系统在NPP的大规模模拟被利用。我们然后从1961~2005与气候变化数据模仿了NPP,当温暖是特别地惹人注目的时。下列是模拟的结果。(1)全部的NPP在过去的45年里从3.61GtC/yr变化了到4.24GtC/yr并且展出了最小的重要线性增加或减少。(2)在增加的地区性的差别或在NPP的减少大,但是展出了一个不足道的全面线性趋势。NPP在大多数部分衰退了东方并且华中,特别在黄土高原。(3)类似于年度NPP的变化法律,季节的NPP也显示了不足道的增加或减少;趋势线在一般水平以内。(4)在季节的NPP变化的地区性的差别大。NPP在黄土高原在春天,夏天,和秋天衰退了,但是在西藏的高原的大多数部分增加了。
简介:Moderncitiesandtownsplayasthecentralplacesofwealthaccumulationforhuman-being,notonlyinthewaysofsettlementandmaterialconsumptionastheyweretraditionallyinancienttime,butalsointhewaysofsocialproductionandenvironmentalpollutionastheyaremostlytoday.Withsuchatransition,themeaningoflanduseforurbanizationhasbroadened.Accordingtotheruleofhumanecosystem,landuseformodernurbanizationcanbedividedintothreetypes:namely,thedirect,theindirectandtheinduced.However,itsstructurefollowsitsownwayofthedirect
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简介:NowadaysthefasteconomicdevelopmenthasbroughtaboutseriousconflictsbetweenthelimitedlandresourcesandtheincreasinglanddemandinChuzhouCity.Thechangesoflandusestructurealsorestricteconomicdevelopmentandsocietyprogressinthisarea.Becausedifferentcitieshavedifferentfunctionallocalization,thecityareaandeachcounty(city)haveformedcharacteristiclandutilizationstructure.Itisofgreatsignificancetomakerationaluseoflandresourcesandensurethesustainableuseoflandresourcesbyanalyzingthevariationoflandusestructureinthecityareaandeachcounty(city)inChuzhouCity.BasedonthedataoflandusemodificationofChuzhouCityfrom1996to2005andadoptingthequantitativeanalysisoflandscapeecology,thispaperstudiesquantitativelythetemporaldivisionofregionallandusestructureanditsdynamicchanges.Theresultsindicatethat:(1)thismethodcanrevealthelawofthevariation;(2)thevariationoflandusestructureinChuzhouCity:increasingdiversification,evennessandheterogeneity;(3)theintensityofchangeinlandusefrom1996to2005inthecityappearedinthesequence:grassland>trafficland>gardenland>virginland>forestland>industrialandresidentialland>cultivatedland>otheragriculturalland>waterfacilityland;(4)therewereremarkabledifferencesbetweenthecityareaandeachcounty(city)intherelativechangeandthelandusestructurechangefrom1996to2005.ThispaperanalyzesthevariationoflandusestructureinChuzhouCity,andfinallyproposesrelatedcountermeasuresandsuggestions.
简介:这研究的目的是描绘元素的碳和器官的碳(EC和OC,分别地)喷雾器粒子(PM2.5)的内容在Tongliao收集了,在东北中国的HorqinSandland的一个地点。在春天2005期间,PM2.5集体集中是126±71μg·m?3,与更高的灰尘集中,在五期间,灰尘比在非尘封的天下暴雨(255±77对106±44μg·m?3)。在一个热/光的反射方法决定的PM2.5的平均OC和EC集中是15.7±7.3μg·m?3和3.3±1.7μg·m?3,分别地并且碳的喷雾器在正常的天与21.7%相比在灰尘暴风雨期间说明了9.9%PM2.5质量。到EC的OC的平均比率在灰尘暴风雨期间类似于在非尘封的天的那些,并且在OC和EC之间的关联系数高,0.86。高OC/EC比率,八碳部分的分布,和在有OC和EC的K之间的强壮的关系显示农村生物资源烧是到地区性的碳的喷雾器的主导的贡献者。
简介:关于为在1980年代和1990年代的瓷器精力紧张的戏剧的衰落负责的主要因素有可观的争论。然而,很少详细分析被做了在20022005期间在精力紧张解释变化。在这份报纸,我们使用结构的分解分析(SDA)把精力紧张分解成五决定因素:精力输入系数,技术系数(Leontief反的系数),由产品的最后的要求结构,由范畴的最后的要求和最后的精力消费系数。我们然后进一步分解二个系数,精力输入系数和技术系数,进结构和真实系数。实验学习在2000经常的价格从1987~2005基于energy-input-output桌子被执行。结果证明在1987和2002之间,精力输入结构在精力紧张说明大多数衰落。然而,由产品的输入结构和最后的要求结构解释在2002和2005之间的精力紧张的增加。
简介:Morletwavelettransformationisusedinthispapertoanalyzethemultitimescalecharacteristicsofprecipitationdataseriesfrom1957to2005inGuyuanregion.Theresultsshowedthat(1)theannualprecipitationevolutionprocesshadobviousmultitimescalevariationcharacteristicsof1525years,712yearsand36years,anddifferenttimescaleshaddifferentoscillationenergydensities;(2)theperiodsatsmallertimescaleschangedmorefrequently,whichoftennestedinabiggishquasiperiodicoscillations,sotheconcretetimedomainshouldbeanalyzedifnecessary;(3)theprecipitationhadthreemainperiods(22year,9yearand4year)andthe22yearperiodwasespeciallyoutstanding,andtheanalysisofthismainperiodrevealsthattheprecipitationwouldbeinarelativehighwaterperioduntilabout2012.
简介:Atpresentabout60%ofecosystemhasbeendamagedanddegradedseverely,resultinginenormousecologicallossglobally.Theessentialcauseistheirrationalutilizationofecosystembyhumankind,soitisthekeytochangingimproperenvironmentalperformanceofhumankindsoastopreventecosystemfrombeingdamaged.Thequantitativevaluationonthelossofecologicaldamageisaneffectivetooltoguidehumanecoenvironmentalperformance.Inthispaper,theconceptsrelatedtothevaluationonecologicaldamagecostareintroduced;uncertaintiesthatmightariseinthevaluationonthelossofecologicaldamagesuchasareacoverageofvaluation,ecologicaldamagequantity,bordersofecologicaldamagecostanddatasupportareanalyzed;andthevaluationapproachesforthelossofecologicaldamagearealsodiscussed.Asacasestudy,theeconomiclossesofecologicaldamageofforestin2005inChinaarevaluated.
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简介:TheChina-UKSystemsBiologyWorkshop2005washeldduringJune20-21intheNationalScienceParkofZhejiangUniversity,Hangzhou,China.ItwasorganizedbytheInstituteofBioinformatics,ZhejiangUniversity,andwasinitiatedbyProf.Dr.JunZhu(ZhejiangUniversity)andProf.Dr.JohnFindlay(UniversityofLeeds,UK).TheworkshopwaspartoftheprogramcalledUK-ChinaPartnersinScience,aone-yearcampaignthatwasinitiatedbytheBritishgovernmenttoexploremorecollaborationsbetweenUKandChinaonscienceandtechnology.Itwasattendedalsobyarepresentativeofthisprogram,Mr.FrankYuan,seniorscience&innovationofficer.Theideaoftheworkshopwastobringtogetherexpertswithspecialistsinsystemsbiologyinordertopromotethe"naturalpartnership"betweenscientistsfromthetwocountries.Themostimportantitemsofsystemsbiologyconsideredattheworkshopwere:(1)Newtechnologiesandadvancesinsystemsbiology;(2)Researchdevelopmentsingenomicsandproteomics;(3)Newmethodologiesandsoftwareincomputationalbiology;(4)ResearchcollaborationonsystemsbiologybetweenChinaandUK.