简介:摘要; G3i仪器已经在地震勘探市场使用多年,仪器操作员积累了很多 G3i仪器的操作经验和技巧.这些实践经验和操作技巧的应用能够提高地震仪器的工作效率。本文主要探讨了 G3i仪器在地震勘探采集施工中的几个应用技巧,这些操作技巧的应用能够使得地震仪器操作变得更加高效、简单。
简介:Copolymerizationofstyrene(St)andisoprene(IP)wascarriedoutwithacatalystsystemcomposeaofanhydrouslanthanidechloridehexamethylphosphoramidecomplex(LnCl3·HMPA)andaluminumorganiccompound(AOC).Amongthecatalystsexamined,catalystNdCl3·HMPA/AI(i-Bu)3showedahighactivityinthecopolymerizationundercertainconditionsgivingcopolymers(5%—15%Stcontent)withhighcis-1,4microstructureinIPunits(>95%).TheeffectsofHMPA/Ndmolarratio,Al/Ndmolarratio,monomer/Ndmolarratio,Stfeedratio,andthereactiontimeoncopolymerizationwereexaminedwiththiscatalyticsystem.Theobtainedcopolymerswerecharacterizedby^1Hand^13CNMRspectroscopiesandgel-permeationchromatography(GPC).
简介:摘要肝肾综合征(HRS)是重型肝炎严重的并发症,其发病机制目前尚未明确,HRS病死率极高,威胁患者生命,关于其发病机制的研究迫在眉睫,本文旨在通过文献与临床经验总结分析I型IP3R-IP3与重型肝炎并发HRS发病的关系。
简介:摘要随着我国投入运行的核电机组不断增加以及电力需求增速降低,最近一年来,我国在运核电机组开始频繁参与电网调峰运行,增加了反应堆控制的难度。本文以宁德核电站#3机组首循环寿期中后期各次调峰运行的情况为基础,对△I影响因素以及控制策略、注意事项进行了详细地分析和论述,供反应堆操纵员作为实际工作的参考,以帮助操纵员提高功率变化后△I控制的水平。
简介:Thethirdalgorithmintercomparisonproject(AIP-3)involvedrainestimatesfrommorethan50satelliterainfallalgorithmsandgroundradarmeasurementswithintheIntensiveFluxArray(IFA)overtheequatorialwesternPacificwarmpoolregionduringtheTropicalOceanGlobalAtmospherecoupledOcean-AtmosphereResponseExperiment(TOGACOARE).Earlyresultsindicatedthattherewasasystematicbiasbetweenrainratesfromsatellitepassivemicrowaveandgroundradarmeasurements.Themeanrainratefromradarmeasurementsisabout50%underestimatedcomparedtothatfrompassivemicrowave-basedretrievalalgorithms.ThispaperisdesignedtoanalyzerainpatternsfromtheFloridaStateUniversityrainretrievalalgorithmandradarmeasurementstounderstandphysicallytheraindiscrepancies.Resultsshowthatthereisaclearrange-dependentbiasassociatedwiththeradarmeasurements.However,thisrange-dependentsystematicalbiasisalmosteliminatedwiththecorrectedradarrainrates.Resultssuggestthattheeffectsfromradarattenuationcorrection,calibrationandbeamfillingarethemajorsourcesofraindiscrepancies.ThisstudydemonstratesthatrainretrievalsbasedonsatellitemeasurementsfrompassivemicrowaveradiometerssuchastheSpecialSensorofMicrowaveImager(SSM/I)arereliable,whilerainestimatesfromgroundradarmeasurementsarecorrectable.