文献综述模板范文

一次，他在核实数据时，认为部分数据需要重新测量，但项目部的车都被派出去了。belimitedtonomorethan2daysofwork,materialdepositedinspecialinsulatedcontainers,materialhandlingtogentlyandmakeuseofthermalinsulationmaterialinwindproof,waterproof,moisture-proofmeasure.6.2thermaldesignoptimizationforhigh-temperaturespecialthermalinsulationforpipingsupportandhangerdesign,reducedheatdissipationofthehangers,ensurethatthewalldoesnotoverheat.Small-diameterpiping,thermalinstrumentlayoutandpositioningofsupportandhangerdesigntakefullyintoaccounttheexpansionspaceandinsulationthickness.Large-diameterpipesafterheatpreservationplasteringconstructionofvalves,turbine,checkingsmoothsurface,hightemperaturepowderpaintfullydryafter.Protectivecoveringsforelectricequipmentinsulationboardsdesignedwithpressureplate,whenorderingaccordingtotheinstallationdiagram,modelspecificationspublishingorder,ensurewheninstallingcornersneat,uniformappearance,reducetheamountofon-sitemachining.Beforevalves,flangeinsulationshellconstruction,besuretomakeaunifiedmodel,allvalves,flanges,insulationcoverunified,tidyandbeautiful.Whenfourpartssuchaspipes,boilerinsulation,mustdofirstarticleinspection,proofofdesignandconstructionmethods,technologycanmeetthetechnologicalrequirements,beforeextensiveconstruction.Boilersteelbeams,dooropeningboxesdesignedwithinsulationgaskets,flangecannotbeoblique,evenfastened.Backintotheslopeofthetubingduringinstallationpayattentiontothepiping,oilstationisalowpoint.Refuelingmustbecontrolledwhencastingmaterialparts,selectlowthermalconductivitymaterialsasfaraspossible,ensurethatthesepartsdonotoverheat.6.3qualitydefectsofinsulationtechnologymanagementoptimizationofconstructionprocessanddevelopareasonableduration,regionaltransferofstrictly海南大学毕业论文文献综述报告题目：芦荟提取物的杀虫活性初探学号：姓名：张宇博年级：2007级学院：材料与化工学院系别：化工系专业：化学工程与工艺指导教师：陈祎平（教授）/梁振益（工程师）完成日期：2011年3月30日一次，他在核实数据时，认为部分数据需要重新测量，但项目部的车都被派出去了。belimitedtonomorethan2daysofwork,materialdepositedinspecialinsulatedcontainers,materialhandlingtogentlyandmakeuseofthermalinsulationmaterialinwindproof,waterproof,moisture-proofmeasure.6.2thermaldesignoptimizationforhigh-temperaturespecialthermalinsulationforpipingsupportandhangerdesign,reducedheatdissipationofthehangers,ensurethatthewalldoesnotoverheat.Small-diameterpiping,thermalinstrumentlayoutandpositioningofsupportandhangerdesigntakefullyintoaccounttheexpansionspaceandinsulationthickness.Large-diameterpipesafterheatpreservationplasteringconstructionofvalves,turbine,checkingsmoothsurface,hightemperaturepowderpaintfullydryafter.Protectivecoveringsforelectricequipmentinsulationboardsdesignedwithpressureplate,whenorderingaccordingtotheinstallationdiagram,modelspecificationspublishingorder,ensurewheninstallingcornersneat,uniformappearance,reducetheamountofon-sitemachining.Beforevalves,flangeinsulationshellconstruction,besuretomakeaunifiedmodel,allvalves,flanges,insulationcoverunified,tidyandbeautiful.Whenfourpartssuchaspipes,boilerinsulation,mustdofirstarticleinspection,proofofdesignandconstructionmethods,technologycanmeetthetechnologicalrequirements,beforeextensiveconstruction.Boilersteelbeams,dooropeningboxesdesignedwithinsulationgaskets,flangecannotbeoblique,evenfastened.Backintotheslopeofthetubingduringinstallationpayattentiontothepiping,oilstationisalowpoint.Refuelingmustbecontrolledwhencastingmaterialparts,selectlowthermalconductivitymaterialsasfaraspossible,ensurethatthesepartsdonotoverheat.6.3qualitydefectsofinsulationtechnologymanagementoptimizationofconstructionprocessanddevelopareasonableduration,regionaltransferofstrictly前言浸渍法是在提取时将中草药溶解于溶剂中，以使其有效成分浸出、提取出来。选取溶剂时依照相似相溶原理。但浸出率较低，如果用水溶解，提取液还会发霉变质，因此注意加入适当的防腐剂。渗漉法是将中草药粉末先装在渗漉器中使药材浸渍24~48h膨胀，然后不断添加新溶剂，使其自上而下渗透过药材，从渗漉器下部流出、收集浸出液的一种浸出方法。经典液体色谱技术分离量大，载样品多，操作方便，设备简单，能在单位时间内获得较多量分离组分，是进行天然产物常用的方法。在回归自然思潮的影响下，人类越来越青睐于绿色的健康产品。含有芦荟及其有效成分的产品是众多健康产品中的佼佼者。对芦荟及其有效成分的研究也是各国学者研究的热点之一，多种多样的芦荟产品丰富着人们的生活，但国内很少有高附加值芦荟产品的生产与推广。本文综述了国内外对芦荟的相关报道与研究，为芦荟产品的研发提供了较为具体的文献参考。。鉴于化学农药本身固有的缺点和人们不合理的长期滥用，导致了严重的环境问题，也破坏了自然界的生态平衡，人们越来越倾向于从天然物质中寻找更安全、更有效的杀虫物质,以开发新型的杀虫剂。从植物中筛选杀虫活性成分，开发出植物源杀虫剂。植物源杀虫剂，又有人称之为“中草药农药”，由于其来源于天然的生物，具有与环境良好的相容性，易降解，残效期短，不污染环境，害虫不易产生抗药性等特点，其研究和开发近年来已成为国内外农药研究领域的一个重要课题，具有广阔的市场前途，己成为近年来国际上研究的热点。杀虫植物的抽提物可以直接用于防治害虫，或者与其他农药复配使用以提高药效和安全性，或者以杀虫活性物质为模板,研制和开发新型的杀虫剂。芦荟作为百合科中的一个属种，是一种多用途的植物，有着较强的市场开发潜力，具有生命力强，药用价值高等特点，有良好的产业开发利用前景，对它的研究和开发将会给人类带来可观的经济价值一次，他在核实数据时，认为部分数据需要重新测量，但项目部的车都被派出去了。belimitedtonomorethan2daysofwork,materialdepositedinspecialinsulatedcontainers,materialhandlingtogentlyandmakeuseofthermalinsulationmaterialinwindproof,waterproof,moisture-proofmeasure.6.2thermaldesignoptimizationforhigh-temperaturespecialthermalinsulationforpipingsupportandhangerdesign,reducedheatdissipationofthehangers,ensurethatthewalldoesnotoverheat.Small-diameterpiping,thermalinstrumentlayoutandpositioningofsupportandhangerdesigntakefullyintoaccounttheexpansionspaceandinsulationthickness.Large-diameterpipesafterheatpreservationplasteringconstructionofvalves,turbine,checkingsmoothsurface,hightemperaturepowderpaintfullydryafter.Protectivecoveringsforelectricequipmentinsulation