学科分类
/ 13
245 个结果
  • 简介:在2005和2006收集的表面沉积样品的Geochemical分析被用来评估在东南波兰Solina水库的沉积在场的有机物的潜在的来源。沉积变量的统计分析(碳到氮比率,和碳13和氮15同位素比率)决定了因为器官的部分关于有机物的来源显示了重要空间可变性。一个二进制混合模型从文学来源被开发预言属曾被地壳动力搬、本土的生产的相对贡献到沉积有机物。本土的生产被显示在水库的湖的部分说明体积沉积的60-75%,在水坝附近。相反,本土的生产说明了因为仅仅在收到流的河流的地区的25%沉积输入。统计分析识别了15有机物的N作为有机物的来源的最好的预言者。多重回归分析显示二个水质量变量(硝酸盐和溶解硅石)是显著地与15有机物的N签名。这导致了那湖泊的硝酸盐和溶解硅石集中在Solina水库正在调整有机物生产的一个结论。

  • 标签: 表面沉积 有机物 混合模型 同位素 水库 起源
  • 简介:构造Technosols可以是为创造城市的绿空格的一种选择。然而,从人工品的集会出现的水疗院结构的性质从来没被记录过。土壤收缩曲线(SSC)能关于构造Technosols提供相关结构的信息,例如保持每个毛孔系统(macropores和micropores)的能力的水。这研究的目的是(i)评估SSC和水保留曲线(WRC)描述构造Technosols的结构并且(ii)在土壤上满足水疗院结构的性质理解有机物的影响。在这研究,Technosols被混合绿浪费堆肥(GWC),材料从土壤(古日耳曼语字母之一)的深地平线挖掘了获得。GWC从0%~50%在六个不同容量的百分比与古日耳曼语字母之一被混合(GWC/total)。GWC和古日耳曼语字母之一展出了高度分叉的水疗院结构的性质:SSC为GWC是夸张的并且为古日耳曼语字母之一S字形。所有六个混合处理(0%,10%,20%,30%,40%和50%GWC)展出了古典S字形的形状,揭示毛孔系统的二个嵌入的层次。20%GWC处理是类似于30%和40%GWC处理的水疗院在结构上;那么,广泛的GWC的大数量是不必要的。有GWC百分比的关系是一二度为在micropores的容量的可得到的水的方程,但是为在macropores和全部的容量的可得到的水的容量的可得到的水是线性的。在50%GWC处理的全部的容量的可得到的水在0%GWC处理象那一样两次高。由联合SSC和WRC,增加GWC百分比增加了由减少保持能力的水在收缩限制的浸透水的micropores的最大的相等的尺寸并且增加浸透水的macropores的最大的相等的尺寸,导致能保留可得到的水的毛孔直径的一个增加的范围。

  • 标签: 土壤有机质含量 结构性能 水力 人工 城市绿色空间 结构特性
  • 简介:由使用不同器官的ligands,二3D无机器官的混合混合物公司(C4H4N2)(VO3)21;公司(C12H12N2)(VO3)22被热水的反应综合;由X光检查晶体学描绘了。水晶数据:1。水晶系统斜方晶,空格组Pnna,a=10.188(2),b=11.497(2),c=7.3975(15),V=866.5(3)[3],Z=4,Dcalcd=2.705g/cm[3];2。水晶系统三斜晶系,空间组P1(号码2),a=8.3190(17),b=8.4764(17),c=11.183(2),α=95.48(3)°,β=92.03(3)°,γ=107.24(3)°,V=748.0(3)[3],Z=2,Dcalcd=1.958g/cm[3]。化合物1的框架包含两个{公司(C4H4N2)};无限的metavanadate链。化合物2的水晶结构被构造与无机{CoV2O6}由器官的1,2二度(4-pyridyl)到对面连接的层乙烷ligands。二混合物对约410°C热地稳定;350°C分别地。他们的光乐队差距决心是2.13eV;由UV-VIS-NIR弥漫的反射系列的2.12eV,它揭示了他们半导体的性质;光吸收特征。

  • 标签: 应用化学 水热作用 晶体 合成方法
  • 简介:Anorganicsilaneacrylateresin(PMBK)wassynthesizedbyfree-radicalsolutionpolymerizationusingmethylmethacrylate,butylacrylateand(3-methacryloxypropyl)trimethoxysilaneasmonomers.Aluminum(Al)particleswerethenencapsulatedininorganic-organichybridfilmsthatwerepreparedbyhydrolysisandcondensationofPMBKandtetraethylorthosilicate(TEOS)onthesurfaceofAlpigments.CharacterizationresultsshowedthatPMBKandTEOScouldsimultaneouslyhydrolyzeandcondensewithhydroxylgroupsonthesurfaceoftheAlparticlestoformcompositeAlparticlescoatedwithinorganic-organichybridfilms.ComparedwithrawAlparticles,thecorrosionresistanceandadhesivepropertiesofpaintfilmscontainingthecompositeAlparticleswereimprovedgreatly,whiletheglossinessofthepaintfilmsdecreasedslightly,from48.6°to47.0°.Inalkalinemedia(pH11),thevolumeofevolvedH2ofcompositeAlparticleswasonly3.5mL,whereasthatofrawAlwas83.5mL.TheglossinessofpaintfilmscontainingcompositeAlparticlesdecreasedby1.66%afterimmersioninalkalinemediafor24h,whereasthatofrawAldecreasedby14.82%.Peel-offtestsofthepaintfilmsshowedthatthecompositeparticlesmovedslightlyawayfromthepaintfilms.Incontrast,therawAlparticleswereseriouslydesquamated,suggestingencapsulationofhybridfilmscangreatlyimprovetheadhesivepropertiesofAlparticlesinpaintfilms.

  • 标签: 杂化薄膜 粘合性能 铝颜料 无机 包封 有机膜
  • 简介:Determiningthephysicalandmechanicalpropertiesofsoilanditsbehaviorforengineeringprojectsisessentialforroadconstructionoperations.Oneofthemostimportantprinciplesinforestroadconstruction,whichisusuallyneglected,istoavoidmixingorganicmatterwithroadmaterialsduringexcavationandembankmentconstruction.Thecurrentstudyaimedtoassesstheinfluenceoforganicmatteronthephysicalpropertiesandmechanicalbehaviorsofforestsoilandtoanalyzetherelationbetweentheamountoforganicmatterandthebehaviorofforestsoilasroadmaterial.Atypicalsoilsamplefromthestudyareawascollectedbesideanewlyconstructedroadbed.Thesoilwasmixedwithdifferentpercentagesoforganicmatter(controltreatment,5,10,and15%bymass)anddifferenttestsincludingAtterberglimits,standardcompaction,andCaliforniabearingratio(CBR)testswereconductedonthesedifferentsoilmixtures.Theresultsshowedthatsoilplasticityincreasedlinearlywithincreasingorganicmatter.Increasingtheorganicmatterfrom0%(control)to15%resultedinanincreaseof11.64%oftheplasticlimitand15.22%oftheliquidlimitafterdryingat110℃.Also,increasingtheorganicmattercontentreducedthesoilmaximumdrydensityandincreasedtheoptimummoisturecontent.Increasingtheorganicmatterfrom0to15%resultedinanincreaseof11.0%oftheoptimummoisturecontentandadecreaseof0.29g/cm3ofthemaximumdrydensity.OrganicmatterdecreasedtheCBR,whichisusedastheindexofroadstrength.Adding15%organicmattertothesoilresultedinadecreaseoftheCBRfrom15.72to4.75%.Therewasasignificantdifferencebetweenthetwodryingtemperatures(60and110℃)forthesameorganicmattermixtureswithlowerwatercontentvaluesafterdryingat60℃.Theresultsrevealedtheadverseinfluenceoforganicmatteronsoilengineeringpropertiesandshowedtheimportanceoforganicmatterremovalbeforeexcavationandfillconstruction.

  • 标签: Atterberg limits California bearing ratio Hyrcanian
  • 简介:基于常规双电子锅设备,三倍的层有铟听氧化物(ITO)的二异种结构的器官的轻射出的二极管(OLED)/N,N′-diphenyl-N,N′-bis(1-naphthyl)(1,1′-biphenyl)-4,4′-diamine(NPB)/2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline(BCP)/8-Hydroxyquinoline铝(用真空免职方法的Alq3)/Mg:Ag被制作了。OLED的表演上的BCP层的不同电影厚度的影响被调查了。结果证明当BCP层电影的厚度逐渐地从0.1nm变化了到4.0nm时,OLED的电镀物品光(EL)系列从绿色变了到对蓝色,和作为与EL光谱有关的费用搬运人的再结合区域扮演的BCP层浅绿色蓝色,提高亮度和力量效率。象7.3lm/W一样高到达的OLED的力量效率。

  • 标签: 电致发光器件 超薄层 OLEDS 异质结构
  • 简介:我们报导紫外(紫外)分层的器官无机的perovskite材料的轻导致的对光反应变色行为(C4H9NH3)2CuCl4,与紫外光在照耀以后从黄改变了到褐(10mW/cm2)并且部分在黑暗中通过存储恢复了。(C4H9NH3)2展出的CuCl4在286nm集中的二个不同吸收乐队(乐队我)并且384nm(乐队II)它被归因于导致相片的激子在无机的层由器官的层夹了的2D形成了。乐队的蓝移动我当样品为时间的不同长度在紫外光下面被照耀时,从象乐队的紧张的减少一样的287~269nm,我和乐队II能被发现。在弄歪的CuCl64−八面体的N-H⋯Cl氢契约以及长Cu-Cl契约的颤动的紧张的同时的变弱能从Fourier变换被检测红外线(FTIR)系列,它结果不对称的Cl-Cu⋯Cl契约和产生对光反应变色行为的起诉分发的变化。

  • 标签: 光致变色行为 有机无机 钙钛矿 酰氯 傅里叶变换红外光谱 性能
  • 简介:Theiron-loadedorganicphaseofnaphthenicacid-isooctylalcohol-kerosenewasprepared,andtheprocesskineticsofhydrothermalstrippingofironfromthephasewasstudied.Severalfactorsaffectinghydrothermalstripping,suchasthepolymerofnaphthenicacid,initialconcentrationsofironandnaphthenicacid,temperatureandagitationtime,wereinvestigated,andbasedonexperimentalresultsandtheoreticalanalysis,twokineticmodelswereestablished.Thestrippingrateequationsuggeststhatthehydrothermalstrippingprocessactivationenergyis96.4kJ·mol-1andthestrippingiscontrolledbyhydrolysisofnaphtheniccomplexofiron.Thevaluescalculatedbythestrippingfractionequationcomparativelyaccordwiththeexperimentaldata.

  • 标签: 铁负载有机相 水热抽提 活化能 动力学研究
  • 简介:Understandingtheeffectsoforganicacids(OA)onthetransformationofFeandMntosurfacewaterfromtheweatheringcoalgangueisofgreatbene?ttoriskassessmentandremediationstrategiesforcontaminatedwaterandsoil.BasedontheinvestigationonsurfacewaterinthecentralcoaldistrictsoftheGuizhouProvince,18watersampleswerecollectedforheavymetalanalysis.TheresultsindicatedthatthepHvalueofsurfacewaterislow(3.11–4.92),andFeconcentration(1.31–5.55mgL-1)andMnconcentration(1.90–5.71mgL-1)were,onaverage,10.86and34.33timesthelimitofSurfaceWaterQualityStandards,respectively.InordertoevaluatetheeffectsoftheOAonthedissolutionofFeandMnfromtheweatheringcoalgangue,columnelutionandbatchleachingexperimentswereconducted.Theresultsshowthatthelowmolecularweightoforganicacids(LMWOAs,i.e.,oxalic,tartaric,malicandcitricacids)andfulvicacidssigni?-cantlyacceleratedthedissolutionofFeandMn;inaddition,whentheconcentrationofOAreached25mmolL-1,theconcentrationsofFe,andMnwere1.14–67.08and1.11–2.32timesashighasthosein0.5mmolL-1OA,respectively.Furthermore,themigrationofFeandMnwassigni?cantlyin?uencedbythepHandEh,especiallyforFe;theionMnwasdissolvedfromtheganguemoreeasilythantheionFeinthecolumnleaching,whichwascontrarytotheresultsofbatchleaching.

  • 标签: 低分子量有机酸 煤矸石 MN 溶解 风化
  • 简介:特征和土壤的潮汐的扁平的趋势有机物(SOM)周转在长江河口为Chongmingdongtan盐沼被学习基于稳定的碳同位素作文(未13C)的分析,谷物微粒缩放并且满足器官的碳(停靠港),全部的氮(TN)和为从高潮汐的扁平的、中间的潮汐的公寓和赤裸的公寓挖掘的三个核心的无机的碳(TIC)。结果证明在土壤停靠港内容和盐沼核心的未13C价值之间的关联类似于在器官的碳(SOC)内容和未13C与不同高度多山的土壤侧面的上面的土壤层珍视的土壤之间的那些。盐沼的SOM通常比100年年轻,并且在长江的集水主要从表层土侵蚀发源。有C/N比率,满意于TIC内容的停靠港和停靠港的TN内容的关联与未13C价值满足因为核心建议从盐沼的SOM的周转度是全面的低,并且SOM周转的趋势从赤裸的公寓是清楚的到高潮汐的公寓。暴露原来的沉积的扁平的样品表演特征,与次要的SOM周转。SOM的周转过程发生了并且在高、中间的潮汐的公寓,和有有泥泞潮汐的公寓的进化的不同周转率增加的SOM分隔空间的混合的度是可辨别的。交替的泥泞薄片和淤泥的薄片的独占的阶层结构在泥泞潮汐的公寓上从动态depositional过程发源是到溶解材料,和SOM周转的垂直移植的一个大障碍然后被抑制。泥泞潮汐的扁平的过程在盐沼对SOM的隐遁和周转施加了直接影响,并且在长江河口在Chongmingdongtan盐沼的SOM周转的空间、时间的特征上有大限制。

  • 标签: 土壤 有机物 物质转换 沼泽 长江
  • 简介:Studyonformcharacteristicsofnitrogeninmarinesedimentsistheprimarymethodtoresearchitsbiogeochemicalcyclingandnitrogenformcharacteristicsincoresedimentscanreflecttheprocessandresultsofearlydiagenesisinacertaindegree.Inthispaper,SequentialextractionprocessinnaturalgrainsizewasusedforstudyingtheexistentformsofnitrogeninfivecoresedimentsofthesouthernBohaiSeaforthefirsttime.Nitrogenwasdividedintotwoparts-transferableandfixedbasedonwhetheritcouldbeextractedbythereagent.DistributionsandearlydiagenesisoftransferablenitrogenformsinthesouthernBohaiSeawereresearchedintegratedly.ResultsindicatethatIEF-NandOSFNarepredominantformsintransferablepartinthestudiedcoresediments.Contentsofdifferentnitrogenformsvarydifferentlywithdepth,andhavedifferentdiagenesisprocess.Decompositionconstantoforganicnitrogen(ON)andOCareabout15.51×10-3a-1and4.79×10-3a-1respectively,andthedecompositioncontentofbiogenicelementsC,N,P,SihasthesequenceN>P>C>Si.OC/TN(simplifiedasC/Ninthefollowing)ratioismuchlowerthanOC/ON,whichindicatesthatsedimentpreservesplentyofinorganicnitrogen(IN)and/orfixednitrogen,andthedecreaseofOC/ONratiowithdepthisduetoONreservationinsediments.Generally,transferablenitrogenaccountsformoreproportionofTNinthesurfacelayerthaninthedeeplayerofcoresediments,whereas,somestableformsofnitrogencanactivateandbecometransferableunderappropriateenvironment,whichinducestheproportionoftransferablenitrogeninTNinthedeeplayertobealmostthesameasthatinthesurfacelayer.

  • 标签: SOUTHERN Bohai Sea core sediments nitrogen
  • 简介:Theoreticalconsiderationwasproposedforthefrequencyresponseofaseriespiezoelectricsensortothepropertiesofliquidandverifiedexperimentally.Thiskindofsensorhassensitiveandselectivefrequencyresponsetothepermittivityandspecificconductivityofsolutionwithexcellentstability,andwasappliedtothedeterminationofmicro-contentofwaterinorganicsolvents.Thedetectionlimitis0.01g/Lindioxane.

  • 标签: PIEZOELECTRIC QUARTZ CRYSTAL chemical SENSOR micro-water-content
  • 简介:An-typesmallmoleculeDC-IDT2F,with4,4,9,9-tetrakis(4-hexylphenyl)-indaceno[1,2-b:5,6-b]dithiopheneasacentralbuildingblock,furanasπ-bridges,and1,1-dicyanomethylene-3-indanoneasendacceptorgroups,wassynthesizedandusedasanelectronacceptorinsolution-processedorganicsolarcells(OSCs).DC-IDT2Fexhibitedgoodthermalstability,broadandstrongabsorptionin500–850nm,anarrowbandgapof1.54eV,LUMOof–3.88eV,HOMOof–5.44eVandanelectronmobilityof6.5×10–4cm2/(V·s).DC-IDT2F-basedOSCswithconventionalandinvertedstructuresexhibitedpowerconversionefficienciesof2.26and3.08%,respectively.Theeffectofverticalphaseseparationandmorphologyoftheactivelayeronthedeviceperformanceinthetwostructureswasstudied.

  • 标签: 有机太阳能电池 倒置结构 富勒烯 反转 自由 能量转换效率
  • 简介:Tris-(8-hydroxyquinoline)-aluminumeAlq3T–basedorganiclight-emittingdiodeswithCoelectrodearefabricated.Thepositivemagneticelectroluminescence(MEL)andmagneticconductance(MC)areobservedinthesamples,reaching4.35%and1.67%underthefieldof42mTat50K,respectively,andtheMELandMCtracescanbefittedtonon-Lorentzianlineshapes.TheMELvariesasafunctionoftheCothicknessandreachestheoptimalvalueat10nm.TheMELandMCdependenceonvoltageandtemperatureisalsoinvestigated.Theelectron-holepairmodelandthespin-polarizedinjectionmechanismareusedtounderstandtheexperimentalresults.

  • 标签: 有机电致发光器件 电极对 磁场效应 有机发光二极管 8-羟基喹啉 电子-空穴对