简介：Thisworkwasundertakentoresearchorganicwood-flourputtyaswoodensurfaceundercoat.Fourtypesofwood-flour(300,500,800and1000mesh)werepreparedthroughthetechnologicalprocessesofshattering,coarsegrindingandfinegrinding.Andlatex(16%ofsolidcontent)andtwokindsofagents(AandB)wereaddedintotheputty.Inthisexperiment,effectsofagentandparticlesizeofwood-flouronpropertiesoforganicwood-flourputty,suchaspaintingproperties,waterresistance,andabrasive...

简介：

简介：Inthepaperhomogeneousparticleboardofwheatstrawisresearched.Theresultshowsthetechnologyofhomogeneousparticleboardfromcostandquality.Themoisturecontentofstrawparticleis2.0%~2.5%.Thetemperatureofhot-pressingis150℃.Thetimeofhot-pressingis48sec/mm(panelthickness).TheratiobetweenMDIandUFis0.40.Thegluecontentforsurfacelayerofwheatstrawparticleis10%(MDI2.86%,UF7.14%).Thegluecontentforcorelayerofwheatstrawparticleis8%(MDI2.29%,U...

简介：ＮｉｎｇＹｕｈｕａ：ＡｎＥｘｐｅｒｔｏｎＷｈｅａｔＢｒｅｅｄｉｎｇＤｅｖｏｔｅｄｂｏｔｈｔｏｗｈｅａｔａｎｄｔｏｔｈｅｆａｒｍｅｒｓｗｈｏｇｒｏｗｉｔ，ａｎａｇｒｉｃｕｔｕｒｉｓｔｍａｋｅｓｇｒｅａｔｃｏｎｔｒｉｂｕｔｉｏｎｓ．ＰｒｏｆｅｓｓｏｒＮｉ...

简介：

简介：

简介：

简介：

简介：调制温度的微分扫描calorimetric和动态机械分析和绝缘的光谱学被用来与潮湿吸收调查含水的小麦麦胶蛋白质粉末的玻璃转变从2.30db%到18.21db%。干燥小麦麦胶蛋白质的玻璃转变温度(Tg)根据Gordon-Taylor方程被估计。在水和的高度的结构的异质在绝缘的温度和频率系列被揭示。激活精力(E一)二松驰从Arrhenius被计算方程。

简介：Inordertorefinetheproductsofwheatgermagglutinin(WGA),severalionexchangers,suchasD261,732,DEAE-cellulose-32andCM-cellulose-32,havebeenusedtoremovedproteinsandpigmentswithdifferentcolors,suchasbrown,red,yellow,greenandblack,intheextractsofwheatgerm.TheWGAobtainedfromthisprocedurehashigherhemagglutinationactivitythanthatavailablefromsigmaCo.TheminimumhemagglutinationdoseofthepurifiedWGAforanequalvolumeofa2%typeAredbloodcellsis4μg/ml.WGAisamixtureofisolectinswithdifferentisoelectricpoints,5.9,6.2and6.8.TheirmolecularweightidentifiedbySDS-polyacrylamidegelelectrophoresisare15,000dalton,18,000daltonand35,000dalton,respectively.

简介：泥土矿物质捱过是到植物的营养素的来源。Palygorskite是通常发生在干旱区域的土壤和沉积的一种Mg富有的含纤维的泥土矿物质。尽管许多研究检验了为palygorskite的形成和稳定性要求的环境条件，在根地区的这种矿物质的转变的信息(或根围)农业庄稼被限制。这研究在小麦和燕麦的根围探索了palygorskite转变的可能性并且比较了这些庄稼的能力从palygorskite提取结构的Mg。庄稼在从Hamadan区域，伊朗和佛罗里达palygorskite由沙的混合物组成的壶被栽培，与提取的水灌溉了，并且与完全或Mg免费的滋养的答案对待。在100d以后，由庄稼的Mg举起被测量。在每个壶的泥土大小的粒子也与沙被分开并且通过X光检查衍射(XRD)被分析。粒子的X光检查模式与纯palygorskite粒子的相比(在耕作前)。结果证明palygorskite能在与Mg免费的滋养的答案供应的壶为小麦的生长提供足够的Mg。尽管有由从palygorskite结构的两植物的镁举起，显示palygorskite的转变的可检测的山峰都没被XRD认出。在山峰紧张的1.05nm的减少为包含palygorskite的壶是更明显的并且比为与完全的滋养的答案灌溉的壶与Mg免费的滋养的答案灌溉了。尽管在山峰紧张的减少比小麦为燕麦是更大的，显示由燕麦捱过的更大的palygorskite，由燕麦的Mg举起是低的由观察的缺乏症状证实了。

简介：研究被进行测试为小麦稻草粒子董事会的准备与不同方法对待的小麦稻草的wettability变化。小麦稻草独立与二化学药品被喷洒(0.6%NaOH，0.3%H2O2)并且三酶(脂肪分解酵素，xylanase，绗维素酶)。在水和小麦稻草的表面之间的接触角度被测量，传播穿入参数(K值)也与弄湿模型被计算。对待的小麦稻草和控制样品的表面借助于Micro-FTIR被扫描，并且他们的山峰安排被分析。对待的小麦稻草和控制样品的表面形态学被SEM也观察。化学蚀刻在与0.6%NaOH和0.3%H2O2独立对待的稻草的外面的表面上被发现；而且，沿着谷物的对待的小麦稻草的外面的表面上的提取的水的传播穿入参数(K值)比控制的高。与脂肪分解酵素，xylanase和纤维素独立对待的小麦稻草的外面的表面的wettability在对待七天以后被改进，并且在三个酶处理之中，脂肪分解酵素处理最好出现了结果。脂肪分解酵素处理和NaOH处理为改进小麦稻草表面的wettability作为更好的方法被决定。在经济方面，然而，NaOH处理在为稻草粒子董事会的制造的预告的处理更实际、更容易。

简介：粘贴的性质在淀粉的最重要的特征之中，决定它在食物处理和另外的工业的应用。粘贴温度源于快速的Visco分析器(RVA)(Newport科学)在大多数情况中，被Thermocline为Windows过高估计软件节目。这里，便于由RVA粘贴温度的精确测量的二个方法被描述。一个人到变化参数设定到“屏幕”粘贴的粘性开始增加的真点，其它将手工地记录粘贴的粘性开始与公式增加并且计算粘贴的温度的时间(T1)(45/3.8)为米饭的x(T1-1)+50面粉。后者方法给了显著地与gelatinization被相关的手工地坚定的粘贴温度微分扫描caiorimetry测量的温度。

简介：

简介：小麦的天线坏透臭虫EurygastermauraL。（半翅类：Scutelleridae)被调查阐明在女性的antennalchemosensilla的结构和分发。sensilla的五种类型被识别并且描绘了使用一台扫描电子显微镜(SEM)和一台传播电子显微镜(TEM)。类型1sensilla是机械的并且与一个单个顶端的毛孔联系化学受体。类型2和3sensilla与嗅觉的sensilla的典型特征两个都是多多孔的化学受体。类型4是多多孔的像木钉的sensilla，突然并且与投出的表面。类型5是sensillacoeloconica与一光滑并且完全在一个亚cuticular房间插入的一个多孔的木钉。所有类型在二个flagellar片断上被散布，但是我们考虑了仅仅sensilla的最大的数字位于的顶端的flagellomere。最丰富的sensilla是类型3，当时更少众多是类型5。除了类型2，所有类型从尖端在数字减少了到片断的底。sensilla的更低的密度在顶端的antennomere的背面内部的部分上被记录，当更高的密度在相反的方面上被记录时(外部腹)。

简介：Propertiesofthesoilsurfacelayer,thetemporalpatternofthemicroclimatevariablesaswellascropconditionwerecombinedtoanalyzethecharacteristicsoftheevapotranspirationfromwinterwheatfieldsinasalinesoilarea.Inordertoaccomplishthisanalysis,evapotranspirationwasdividedintoevaporationfromthesoilandtranspirationfromwheat.Moreover,theeffectofsoilsalinityonevapotranspirationwasevaluatedthroughtherelationshipbetweenactualevapotranspirationandpotentialevapotranspiration(Ea/Eo)andthetotalsoilwaterpotential(ψ)wasdividedintotwocomponents:matricpotential(ψM)andosmoticpotential(ψo).Twositeswithdifferentsalinitylevelswerechosenforthisstudy,locatedinHebeiProvince,China.MeasurementswereconductedinApril-May1997andMay1998.TheBowenratiomethodwasusedtoestimatetheactualevapotranspiration(Ea),whereaspotentialevapotranspiration(Eo)wasestimatedusingPenman'sequation.Measurementsofsoilevaporation(Es)wereobtainedwithmicro-lysimeters,andtranspirationwascalculatedfromthedifferencebetweenEaandEs.Theresultsshowthattranspirationcomprisedonaveragealmost80%oftotalevapotranspiration.Evaporationfromthesoildifferedslightlybetweenyears,butthisvariationwasdominatedbytheleafareaindex(LAI),whichrangedfrom4to5duringthestudyperiodof1997and1998.Soilelectricconductivity(EC),whichisdirectlyrelatedtoosmoticpotential,rangedfrom1.9to3.5mScm-1in1997andwasnegligiblein1998.Ourresultsindicatethatlowerosmoticpotentialdecreasesthetotalsoilwaterpotential,thusaffectingplanttranspiration.Hence,itispossibletosaythatsoilsalinityactuallydecreasesevapotranspirationfromwinterwheatfields.

简介：Thewheatmidge,Sitodiplosismosellana,isaseriouspestofwheatworldwide.InNorthAmerica,managementofS.mosellanainspringwheatreliesonthetimelyapplicationofpesticides,basedonmidgeadultslevelscaughtinpheromonetrapsorseenviafieldscoutingduringwheatheading.Inthiscontext,biopesticidescanbeaneffectivealternativetopesticidesforcontrollingS.mosellanawithinanIntegratedPestManagementprogram.AfieldstudyusinginsectpathogenicfungusBeauveriabassianaGHA,nematodeSteinernemaJeltiaewithBarricadepolymergel1%,pyrethrin,combinedformulationsofB.bassianaGHAandpyrethrin,Jasmonicacid(JA)andchlorpyrifos(chemicalcheck)wasperformedtodeterminetowhichextenttheyaffectmidgelarvalpopulations,kerneldamagelevels,grainyield,andquality,andtheimpactsonadultparasitoidMacroglenespenetranspopulations.TheresultsindicatedthatbiopesticidesJAandS.Jeltiaewerethemosteffectiveinreducinglarvalpopulationsandkerneldamagelevels,andproducedahigherspringwheatyieldwhencomparedtothewatercontrolatbothstudylocations(EastValierandNorthValier,Montana,USA).IncreasedtestweightinwheathadbeenrecordedwithtwopreviousbiopesticidesatEastValierbutnotforNorthValier,whencomparedoverwatercontrol.Theseresultswerecomparableinefficacytothechlorpyrifos.ThisstudyalsosuggestedthatB.bassianaandpyrethrinmayworksynergistically,asexemplifiedbylowertotallarvalpopulationsandkerneldamagelevelswhenappliedtogether.ThisstudydidnotdemonstratetheeffectofanytreatmentsonM.penetranspopulations.

简介：Heavyionbeamsaregenerallyrecognizedasoneofpowerfulmutagensinplantbreedingtogeneratenewmutantswithidealorusefulagronomiccharacters[1].12C6+ionbeams(80MeV/u)acceleratedbyHeavyIonResearchFacilityinLanzhou(HIRFL)wereusedtoirradiatewheatsamples,oneofthemajorwheatvarietiesinQinghaiprovince,namedGaoyuan448.Theradiationdosesrangedfrom10to200Gy.Theirradiatedsamples,controls,andanothermajorwheatvarietynamedAbowereplantedinfarmlocatinginLeducountyofQinghaiprovincein2014.

简介：Amathematicalmodelbasedonthetheoryofheatandmasstransferinporousmediawasdevelopedtosimulatetheevolutionofgraintemperatureandmoisturecontentinawheatstoragebinduringventilationwithcoolingairattheconstanttemperatureandhumidity.Unlikethepreviousworksonthisaspect,thepresentworkwasnotfocusedoncoolingthestoredgrainbyventilationwithambientair,butwiththerefrigeratedair.Validationwasperformedbycomparingbetweenpredictedandmeasuredgraintemperatureandgrainmoisturecontentfortwocases.Predicteddatawereinreasonablegoodagreementwithmeasuredones.Themodelandtheparametervaluesusedinthemodelareapplicableforpredictingtemperatureandmoistureofstoredgrainsunderventilationconditions.

简介：Basedonfullconsiderationofthewinterwheatbiologicalcharacters,anagrometeorologicalmodelofphysiologicalthermalindexofwinterwheatincludingvernalizationandphotoperiodresponseisestablished,inwhichtheinfluenceofdiurnalvariationoftemperature,effectivetemperatureanddaylengthonthedevelopmentofwinterwheatduringtheperiodfromemergencetoelongationarecomprehensivelyconsidered.ValidationofthemodelusingthedatatakenfromtheexperimentsofwheatecologyinChinashowsthatthemodelbehaveswellwithmeanerrorlessthan3days.