简介：ＦＲＯＭＷＯＭＥＮ＇ＳＭＯＵＮＴＡＩＮＰＲＯＤＵＣＴＩＯＮＢＲＩＧＡＤＥＳＴＯＷＯＭＥＮ＇ＳＴＲＥＥＦＡＲＭＳ￥ＢｙＸｉｅＪｉｎｇｘｉａｎｇＹｏｕｘｉｃｏｕｎｔｙｉｓｓｉｔｕａｔｅｄｉｎａｍｏｕｎｔａｉｎｏｕｓ，ｐｏｏｒｌｙｆｏｒｅｓｔｅｄｒｅｇｉｏ...

简介：ＤｉｓｃｕｓｓｉｏｎｏｆＸｉｘｉａ’ｓＦｏｒｅｓｔｒｙＡＭｏｄｅｌｆｏｒｔｈｅＤｅｖｅｌｏｐｍｅｎｔｏｆＣｈｉｎａ’ｓＴｏｗｎｓｈｉｐＦｏｒｅｓｔｒｙ￥ｂｙＸｕＧｕｏｚｈｅｎＰｏｖｅｒｔｙｉｓｓｔｉｌｌａｓｅｒｉｏｕｓｓｏｃｉａｌａｎｄｅｃｏｎｏｍｉ...

简介：Aseriesofnovel(S,S)-2,8-diazabicyclo[4.3.0]nonanecontainingbenzimidazolemoietywassynthesizedandtheirstructuresweredeterminedby1HNMRandHRMS.ThebiologicalactivityresultsshowedthatthesecompoundspossessedmoderateantifungalactivitytosomeplantpathogenousfungiandmoderateinsecticidalactivityagainstMythimnaseparataWalkerandCulexpipienspallens.Compounds6eand6fexhibitedgoodantibacterialactivityagainstSclerotiniasclerotiorum,PhytophthorainfestansandFusariumgraminearum.Thelethalityratesofcompounds6eand6kagainstMythimnaseparataWalkerwere100%at200mg/Landthelethalityratesofcompounds6hand6kagainstC.pippienspallenswere75%at2mg/L.

简介：江苏省质监局日前发布的2015年文具产品风险监测质量分析报告显示，样品中不少产品标签标识中缺少应有的信息，而最令消费者担忧的是文具中普遍检出了有害物质。笔、橡皮、修正液等文具中检出邻苯二甲酸酯（塑化剂的一种）、有机溶剂残留和卤代烃等。其中，邻苯二甲酸酯被研究证实发挥着类似雌性激素的作用，可致男孩“女性化”和女孩性早熟。

简介：ＷＯＭＥＮ’ＳＰＡＲＴＩＣＩＰＡＴＩＯＮＩＮＳＯＣＩＡＬＦＯＲＥＳＴＲＹＢｙＬｕｏＲｏｎｇｈｕａｉＬｕｏｓｈｕｉｉｓａｖｉｌｌａｇｅｉｎＮｉｎｇｌａｎｇＣｏｕｎｔｙｉｎＹｕｎｎａｎＰｒｏｖｉｎｃｅ．ＭｏｓｔｏｆｏｆｔｈｅＭｏｓｕｏｎａｔｉｏｎａｌｉｔ...

简介：利用测定资料及西德奥斯卡凯尔纳的预测能值公式,对青海天然草地3个主要草地类15个草地型的牧草能值,消化能,代谢能进行了预测分析。结果表明:以高山嵩草为优势种的草地牧草其TDN、DE、ME均较高,山地干草原类,高寒干草原类各草地型牧草DE、ME均较低。

简介：利用函数S-粗集（functionsingularroughsets），提出了变异函数S-粗集，给出了变异函数S-粗集的数学结构和特性。变异函数S-粗集具有两类形式：单向变异函数S-粗集，双向变异函数S-粗集。

简介：Inrecentyears,thequantityandqualityofglobalforestresourcesaredecliningcontinually.Contrarily,thebothinChinaareincreasing,whichisdeeplyrelatedtothesustainableforestmanagementandeco-systemmanagementinChina.Withthetrendthatworldcommunityknowsmoreabouttheimportantroleofforest,moreandmorefunctionsofforestarerecognized.TheimpactandfunctionsofChina'sforestrydeservemoreconcern.Basedonsomeexperiencesinthefieldofforestryresearch,theauthors...

简介：

简介：洗衣机说明书中额定的洗衣量,指在保证机器正常工作和洗涤效果的前提下,一次能洗的干衣服的最大重量.使用时干衣物的投放量应尽量控制在额定值以内,不能超过额定值太多.

简介：137Cs示踪技术是土壤侵蚀研究的一种重要方法,目前已得到广泛应用。准确的137Cs本底值是运用该技术开展研究的基础。为了获取区域高空间分辨率137Cs本底值数据,作者基于147个气象站点的实测数据和Walling＆He的137Cs本底值计算模型,运用主成分分析（PCA）和地理加权回归克里格（GWRK）相结合的方法,预测四川省137Cs本底值的空间分布。结果表明：1）应用PCA法可在保留大部分原始信息的同时,有效地消除变量间的多重共线性,为后续的回归分析与空间插值奠定基础;2）GWRK插值法综合考虑了降水、空间位置等多个影响因素及其对137Cs本底值影响的空间非平稳性,相对于传统的普通克里格和全局回归克里格插值法具有更高的预测精度,且较准确地表达局部区域137Cs本底值空间分布的细节信息;3）以实测数据为基础、基于GIS技术的空间插值方法是获取区域高分辨率137Cs本底值空间数据的可行途径。本研究有效地揭示137Cs本底值的空间分布规律及不同因素对其影响,为运用137Cs示踪技术开展土壤侵蚀研究、水土流失治理等工作提供基础数据和技术支持。

简介：Sulfurtransformationin3soilsmaintainedinaclosedincubationsystemanditsavailabilitytoplantswereinvestigatedusingcarrier-free^35S-SO4^2-and^35S-labeledryegrassstraw.Forcarrier-freeNa2^35SO4treatment,78%,70%and64%of^35SappliedwerefoundinCa(H2PO4)2-extractaleSfraction,4%,5%and7%inslowlysolubleinorganicS,11%,15%and18%inC-O-S,5%,7%,and6%inC-bondedS,and5%,7%and6%inunidentifiedorganicS120daysafterincubationinblacksoil,cinnamonsoilandchestnutsoil,respectively.Mostof35Suptakebyplantscamefromextractable35SO4^2-,andlittlefromC-O-^35SandC-bonded^35S,Inthetreatmentwith35S-labeledstraw,51%,46%and36%of35SincorporatedwerefoundinCa(H2PO4)2-extractableSfraction,7%,6%and7%inslowlysolubleinorganicS,13%,15%and18%inC-O-S,8%,8%and6%inC-bondedS,and18%,25%and35%inunidentifiedorganicSattheendofincubationinabove-mentonedthreesoils,respectively.HigheravailabilityofC-O-35S,C-bonded35Sandunidentifiedorganic35Sfrom35S-labeledstrawwasobservedin35S-labeledstrawtreatmentcomparedtocarrier-freeNa2^35SO4treatment.

简介：Forestshavemultiplebenefitsandfunctions,includingmitigationofclimatechange.Theimpactsofforestsontheglobalcarboncycleincludeforestsascarbonsinks,wood-basedproductsascarbonsinks,bio-energy,andproductionanduseofnon-timberproducts.Inthepastdecades,forestcoverofChinahasincreasedfrom8.6%to18.21%bylarge-scaleafforestationandconversionofcroplandintoforests.Forestbiomasscarbon(C)stockincreasedfrom4.3PgC(1PgC=1015gC)intheearly1980sto5...

简介：前一时期盛行的现场“5S”管理，即整理、整顿、清扫、清洁、素养；营销“5S”只是笔者的引申义，可理解为“整理、整顿、协调、维护、卓越”。营销“5S”管理包括市场5S管理、客户5S管理、产品5S管理、营销代表5S管理。

简介：Asanemergingindustry,China'swoodfloorindustrydatesbacktotheearly1980s.Despitealatestart,ithasdevelopedrapidlyduringthelast20years.ThepastdecadeshavewitnessedgreatchangesinChina'swoodfloorindustry.Withhighquality,manyproducts"madeinChina"areavailablewidelyabroadnowadays.Currentglobaleconomicshocks,however,affectChina'sdomesticrealestatesector;hencethefallingdomesticsalesofwoodfloor.Thepaperaimstoidentifythecurrentsituationoffloorindustry...

简介：通过开展不同土壤pH对薰衣草开花率、生长量、成活率和越冬率的调查试验,确定酒泉地区适宜狭叶薰衣草生长的土壤pH值范围为7.0~7.9和薰衣草安全越冬的土壤pH值阈值为8.4。

简介：Urbangreening,urbanforestryandurbangreenstructureplanningalllookatacityasaunitandintendtoimprovethestatusofgreenspaceinthecity.Eventhoughtheyarenewterms,theirconceptshaveevolvedoveraratherlongperiod.Thispaperpresentsahistoricalreviewofwesternconceptsforurbangreeningsincethe1850s.Thefirstaimistoestablishanoverviewofhowtheurbangreeningconcepthasdevelopedandwhattherelationshipsarebetweenthehistoricalconceptsandurbangreening,urbanforestryandurbangreenstructureplanningtoday.Thesecondarypurposeistounderstandsomekeyissuesforurbangreeningthroughtheexaminationofhistoricalprecedents.Basedonaliteraturereview,thepaperpresentsseveralhistoricalconceptsforurbangreening-rampartareaplanning,parksystem,greenbelts,greenwedgesandgreenways.Thenewconceptofurbangreenstructureisalsointroduced.Eachconceptisdefined.Thesocialbackgroundandtheinfluenceoncitydevelopmentaredescribed.Thereviewshowsthattheconceptofurbangreeninghasalonghistory,parallelwiththedevelopmentofthecityplanningconcepts.Thescopeofurbangreeninghasbecomelargeroverthepastyears.Thefunctionsofurbangreenspacehavechangedfromsingle-purposetomulti-purpose.Thestudyindicatesthathistoricalconceptsmaystillgiveinspirationintoday'surbangreeningprocess.

简介：SulfatecanbeactivatedbyATPsulfurylaseandadenosine5-phosphosulfatekinase(APSK)invivo.RecentstudiessuggestedthatAPSKinArabidopsisthalianaregulatedthepartitionbetweenAPSreductionandphosphorylationanditsactivitycanbemodulatedbycellularredoxstatus.InordertostudyregulationofAPSKinrice(OsAPSK),OsAPSKIgenewasclonedanditsactivitywasanalyzed.OsAPSKIC36andC69werefoundtobetheconservedcounterpartsofC86andC119,whichinvolvedindisulfideformationinAtAPSK.C36A/C69AOsAPSK1doublemutationwasmadebysitedirectedmutagenesis.OsAPSKanditsmutantwereprokaryoticallyover-expressedandpurified,andthenassayedforAPSphosphorylationactivity.OsAPSK1activitywasdepressedbyoxidizedglutathione,whiletheactivityofitsmutantwasnot.Furtherstudiesinthecasethatoxidativestresswillfluctuateinvivo3'-phosphoadenosine-5'-phosphosulfatecontent,andallAPSKisoenzymeshavesimilarregulationpatternsarenecessarytobeperformed.

简介：Man-madeforest,whichistheforestecosystemofrehabilitationandreconstruction,playsasignificantroleintheprovisionofforestproductsandimprovementtheecologicalenvironment.Inthispaper,weestablishedtheAR(5)modeltopredictChina'sforestareafrom2009to2015.Thisstudyshowstheslowgrowthofthenationalplantationareatrendwithsomefluctuations,buttheoverallgrowthrateisnotlarge.WeproposedthatononehandChinashouldcontinuetoincreasetheplantationarea,ont...

简介：