学科分类
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500 个结果
  • 简介:摘要便秘表现为排便次数减少、粪便干硬和(或)排便困难1。随着社会人口结构的老龄化,据报道60岁以上人群慢性便秘患病率可高27.3%,且便秘有随年龄增加而增加的趋势。便秘的发病机制和病理生理机制与诸多因素有关,目尚未完全阐明。近期研究表明,胃肠道动力下降、血清肠道神经递质诱导型一氧化氮合酶、5羟色胺等含量异常是慢性便秘的重要病理生理基础之一。目前iNOS及5-TH对慢性便秘在影响、形成机制及治疗方面还欠缺进一步的探讨,本研究就iNOS及5-TH对便秘形成可能关联及机制进行综述,初步探索便秘的血清学量化指标。

  • 标签: 便秘 iNOS 5-TH
  • 简介:AbriefhistoricalintroductionofresearchesonperspectiveinancientChinaispresented,thispaperstudiedanddiscussedtheperspectivetheoryorZongBing(宗炳)inthe5^thcenturyofChina,includingZongBingandthisAnintroductiontoLandscapePainting,anditsmathematicalbasis,drawingideasofZongBingaswell.

  • 标签: 中国 透视理论 宗炳 风景画法 工程制图
  • 简介:The5thChina-JapanJointHypertensionSymposiumwasheldonNovember6th,2002inGuangdongCardiovascularInstitute,GuangdongProvincialPeople’sHospital,Guangzhou,China.Therewereatotalof96paperspublished(includedspeciallectures,oralpresentations,posters).Almost200cardiologists,whocamefromJapanandChina,attendedthesymposium.

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  • 简介:ThispaperdealswithH∞controlofa5th-ordermodelofsynchronousgenerators.First,byusingthemethodofexactlinearization,wetransformthe5th-ordermodelintoalinearone.Thenweassignthepoleofthelinearizedmodelintheopenlefthalfplane.Finally,weapplythedesignmethodoflinearH∞controltogetastatefeedbackcontroller.

  • 标签: 5th-order model H∞ CONTROL EXACT LINEARIZATION
  • 简介:<正>Co-sponsoredbyChinaTibetologyResearchCenter(CTRC),ChinaAssociationforPreservationandDevelopmentofTibetanCulture,AcademyofSocialSciencesofTibetanAutonomousRegion,the5theventoftheBeijingInternationalSeminaronTibetanStudieswasheldinBeijingfromAugust2toAugust4,2012.Thisseminarhasinvited267scholarsinthefiledofTibetanStudiesfrom2IcountriesandregionsincludingChina,Japan,Mongolia,India,UnitedKingdom,France,Italy,Hungary,

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  • 简介:ImportantDatesDeadlineforabstracts:Sep.1,2010Noticeofacceptance:Oct.8,2010Deadlineforfullpapers:Nov.8,2010Earlyregistration:Nov.8,2010ConferenceContactDetailsDr.YaliGuoDalianUniversityofTechnology,ChinaE-mail:ylguo@dlut.edu.cn

  • 标签: 热科学 热技术 ICCHT2010 摘要
  • 简介:The5thAnnualScientificSessionofCardiologyinSouthChinawasheldfromApril3—7.2003inGuangzhou.Aseminar——“TheFrontlineProblemsandNewViewpointsinCardiologyinRecentTimes”washeldatthesametime.MorethanonethousandcardiologyspecialistscamefromsouthandmiddleChinatoparticipateinthemeetingand135paperswere

  • 标签: 第五届 心血管疾病 学术会议 会议纪要 岭南
  • 简介:Throughoutmythicalandhistoricaltimes,Africa,orLibyaastheGreekssaid,provedtobeatrustycompanionoftheancientMediterraneanworld.WhenOdysseusroundedthePeloponnese,hefirstcameupontheNorthAfricancoast;afterstealingtheGoldenFleece,JasonandhismenaresaidtohavecrossedtheoceanandthenthecontinentwiththeArgoontheirshoulders.1Pirates,mercenariesandmerchantshadpliedtheroutetoEgyptfromtimeimmemorial;seafarersfromthelateArchaicepochonwardsreachedAfrica’swesterncoaststhroughtheStraitofGibraltarandtheEastcoastfromtheRedSea;inthefollowingcenturies,contactswereestablishedasfarinlandasNubiaandthekingdomofMeroe.

  • 标签: WORLD THE OVER OF from the
  • 简介:OnOctober15,2001,No.7generatingunitofYunnanXuanweiPowerGenerationCorp.5thphaseprojectwassuccessfullyputintooperationandconnectedtothepowernetwork.Hitherto,XuanweiPowerPlant5thphaseextensionprojectwaswhollycompleted.XuanweiPowerPlant5thphaseextensionprojectis

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  • 简介:The5thSCCSS&IICwillbeheldonApril4th-7th,2003intheGuangdongHotel,GuangzhouCity,About800specialistsandclinicalphysiciansincardiologywillattendtheconlerences.TheywillcomefromGuandong.Hunan,Hainanandotherprovincesinmedial-southChina.ManyworldfamouscardiologistsfromAmerica,Canada,Germany,theU.K.andHongkong,Beijing,Shanghai,etc.,willbe

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