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991.
本模型试验在基于我国工业用电按峰谷平收费制度,在电渗固结间歇性通电时错开峰电时间,设置长时间断电;基于电阻率在含水率从20%降低到15%会快速增大,含水率20%以上时电阻率变化较小的情况,设置随含水率降低,不断减小的通断时间比;基于含水率从20%降低到15%电阻率会迅速增大的情况,设置土体平均含水率降到20%作为电渗结束时间点。试验结果表明错开峰电的长时间断电能有效降低成本;将含水率降低到20%作为电渗停止时间是可行的;随着含水率变化通断时间比变化的电渗固结是可行的;电渗联合桩加固软土地基效果显著。 相似文献
992.
XU Kuoxi HU Peizhi~ CAI Lihua College of Chemistry Molecular Sciences Wuhan University Wuhan Hubei China 《武汉大学学报:自然科学英文版》2006,11(3):682-686
0 IntroductionPayrriodminaetiics hoenteer oofc ythcleics m .os tC oambupnoduanndts a cnodn tbaeisntin kgno twhnepyridine ring are widely distributedin nature,principally asenzymes and alkaloids . Pyridine enzymes have been foundintissues of all plants and ani mals examined thus far ,andare derivedfromeither nicotinic acid or Vitamin B6[1].Pyr-idine derivatives are also the building block of many phar-maceuticals with a wide range of functionalities that includeantitubercular compounds ,antivi… 相似文献
993.
WANG Sheng XIONG Qian JIANG Ai-ping XIA Ying-qing XU Peng-gen . School of Electronic Information Wuhan University Wuhan Hubei China . School of Physics Technology Wuhan University Wuhan Hubei China . College of Physical Science Technology Huazhong Normal University Wuhan Hubei China 《武汉大学学报:自然科学英文版》2005,10(2):410-412
,,,.lr.0 IntroductionThe RCS(Radar Cross Section) of a target in the near zone is very important in the various civilian and militaryfields. For a complex target, we dissect it in the near zone tomany small regions and simulate the RCS of the the whole … 相似文献
994.
CHEN Juan LI Hong-lian FENG You-mei WANG Jian-zhi .Department of Biochemistry Molecular Biology Tongji Medical College Huazhong University of Science Technology Wuhan China .Department of Pathophysiology Tongji Medical College Huazhong University of Science Technology Wuhan China 《武汉大学学报:自然科学英文版》2005,10(2)
0 IntroductionNeurofibrillary tangle, primarily composed of thehyperphosphorylated microtubule associatedprotein tau[1], is one of the major neuropathologichallmarks in Alzheimar’s disease (AD). In affectedneurons, the major mechanism o… 相似文献
995.
HU Yao-jun~ WEI Lei~ LIU Shu-nan~ YU Jin-hong~ DING Yi~ . Key Laboratory of MOE for Plant Developmental Biology/College of Life Sciences Wuhan University Wuhan Hubei China . College of Life Sciences Hunan University of Science Technology Xiangtan Hunan China . College of Life Sciences Huazhong Normal University Wuhan Hubei China 《武汉大学学报:自然科学英文版》2005,10(3)
0Introduction Malesterilityisacomplicatedphenomenoninhigherplants,whichestablishesthebiologicalbasisofhetero sisutilizationincropsbreeding,especiallyinrice(Oryzasati vaL.).Themolecularandphysiologicalresearchinplantmalesterility,especiallythediscoveryofth… 相似文献
996.
TAO Ning WU Xu-feng QIU Xiao-ping ZHAO Min TAN Yun WU Xin-xing . Institute of Virology Medical School Wuhan University Wuhan Hubei China . Department of Oncology Zhongnan Hospital Wuhan University Wuhan Hubei China 《武汉大学学报:自然科学英文版》2005,10(4):759-766
0Introduction Cervicalcarcinomaisoneofprevalentmalignancy,itisthesecondmostcommoncancerofwomenintheworld wide(thefirstisbreast cancer).Itisestimatedthatthereare450000newcasesinworldeveryyear,ofwhich80%arein developingcountries.Thereare135000newcasesinChin… 相似文献
997.
Ni Bin |bin Zhao Zheng |yu Xie Shu |guo School of Electronic Information Wuhan University Wuhan Hubei China 《武汉大学学报:自然科学英文版》2003,8(3):847-852
0 IntroductionIthasbeenwellknownthattheformationofIonosphericAlfv啨nResonator(IAR)isforthebreakdownofgeometricop tics.ItscentralregionliesneartheheightofF regionelectrondensitypeak .Andatthetypicalheightof 30 0 0kmexiststhemaximumgradientofAlfv啨nvelocity ,whichleadstothereflec tionofshearAlfv啨nwavesandproducestheupperboundaryoftheresonator.Likewise,thelowerboundaryoftheresonatorformsneartheheightof 2 0 0 30 0km .Thus,she… 相似文献
998.
Liao Ya-li Yang Yan Cao Yang School of Electronic Information Wuhan University Wuhan Hubei China 《武汉大学学报:自然科学英文版》2003,8(4)
0 IntroductionItisbecomingwellknownthatsignalandimageprocessingaregettinggreatimprovementsinperfor mancebyusingwaveletbasedmethods.Wavelettheoryhasbeenfoundtobeausefulapproachinsignalandimageprocessing .Theresultsofwavelet basedimageanalysismethodsaresuperiortothoseobtainedbyusingtraditionalapproaches[1 ,2 ] .But 2 bandwaveletanaly sisisnotaveryeffectivemethodforfeatureextractionorpatternrecognition ,forthepartitionofhighfre quentbandsisquitecoarserin 2 bandwaveletdecom position ,whichisnot… 相似文献
999.
主要研究L1/2正则化问题.首先给出了该问题的最优性条件的分析,得到了一阶和二阶必要条件,同时给出了二阶充分条件.这些最优性条件可以看作是光滑函数最优性条件的推广.在此基础上,提出了一种下降算法,并给出了该算法的全局收敛性分析.该算法可以看作是最速下降法的推广. 相似文献
1000.
LIU Zeng-ran~ ZHANG Guang-yi~ LONG Zhang-fu~ LIU Shi-gui~. Life Science College Sichuan University Chengdu Sichuan China . Bioscience Bioengineering College Hebei Economices Business University Shijiazhuang Hebei China 《武汉大学学报:自然科学英文版》2005,10(6):1041-1046
0IntroductionBeoefr y ehaarss baenedn bar epwoperusla orft beenv edreasgceri bfoer b trheowuisnagnadssthe oldest biotechnological process[1]. During thebarley malting and mashed operationin the produc-tion of wort , the lower maltooligosaccharides arehydr… 相似文献