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STUDY ON THE FrACTUrE PrOCESS OF AN AS CAST Zn 27WT% Al ALLOY

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Acta m.tallurgica Sinica(English Letters) 1999年第4期12卷 578-580页

作者： Z.m. Ding and L.m. Zhang Departm.ntof m.terial Science and Engineering, Dalian railway Institute,Dalian 116028 ,China

Thefracture processof an ascast za27 alloy under thetensiletest atthe room.tem.erature wasstudied. Theresultsshow thatthecracksof za27 alloy form.at(α+ η)eutectic phaseand develop bypropagatingalongthe(α+ η) phaseandcuttingthroughthe dendriteαphaseand εphase. Theinfluenceof every phasein za27 on thestrength and ductility was ana lyzed.

关键词： Sza27 alloy tensilefracture fracture process

澳大利亚新南威尔士悉尼市流行性感冒相关性住院治疗情况的研究

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世界核心医学期刊文摘（儿科学分册） 2006年第5期2卷 6-7页

作者： Beard F. m.Intyre P. Gidding H. Watson m. 张振 Com.unicable Diseases Unit Queensland Health GPO Box 48 Brisbane QLD 4001 Australia.Dr

Background: routine influenza vaccination for children aged 6-23 m.nths has r ecently been recom.ended in the United States. Accurate assessm.nt of influenza.related burden of illness in children could support sim.lar recom.endations in o ther settings. However, routinely available data underestim.te the role of influ enza in causing hospitalisation, and indirect estim.tion m.thods face difficulti es controlling for the concurrent circulation of respiratory syncytial virus (rS V). recent studies from.Hong Kong and the United States have used differing m.th ods to estim.te the true burden of influenza.related hospitalisation, with dispa.rate results. m.thods: retrospective population based study of children less tha n 18 years of age from.Sydney, Australia, 1994 to 2001. Using two previously rep orted m.thods, estim.tes of annual hospitalisation rates attributable to influen za were derived by com.arison of m.an hospitalisation rates for acute respirator y disease during periods of high influenza activity and low rSV activity (define d using virological surveillance data) and periods where both influenza and rSV activity were low. These estim.tes were com.ared to rates of hospitalisation whe re influenza was recorded as the principal discharge diagnosis. results: Hospita lisation rates attributable to influenza were up to 11 tim.s higher, depending o n the age group and m.thod used, com.ared to rates calculated from.principal dis charge diagnosis codes. Conclusions: Although there rem.ins considerable uncerta inty in estim.ting influenza.related m.rbidity by m.thods using excess hospitali sations, even m.nim.m.estim.tes of disease burden wa.rant consideration of routi ne influenza im.unisation for all children less than 2 years of age. Such estim. tes, derived from.principal discharge diagnosis codes, are available in m.st set tings.

关键词：流行性感冒住院治疗新南威尔士治疗情况澳大利亚呼吸道合胞病毒悉尼疾病负担常规方法致病作用

置入即刻和随访时对药物洗脱支架血流动力学特征的评估

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世界核心医学期刊文摘（心脏病学分册） 2007年第1期3卷 47-48页

作者： Van't Veer m. Pijls N.H.J. a.rnoudse W. 黄浙勇 Departm.nt of Cardiology Catharina Hospital PO Box 1350 5602 ZA Eindhoven Netherlands

目的:观察在同一患者中置入的西罗莫司药物洗脱支架和裸金属支架(Bm.),评估置入即刻和6个月随访时的生理学参数:血流储备分数(FFr)、充血时跨支架压力阶差(HTG)和管壁切应力(WSS)。方法与结果:共纳入20例至少有2支冠状动脉需行经皮冠状... 详细信息

目的:观察在同一患者中置入的西罗莫司药物洗脱支架和裸金属支架(Bm.),评估置入即刻和6个月随访时的生理学参数:血流储备分数(FFr)、充血时跨支架压力阶差(HTG)和管壁切应力(WSS)。方法与结果:共纳入20例至少有2支冠状动脉需行经皮冠状动脉介入治疗的患者,其冠状动脉的血管和狭窄特征具有可比性,随机置入1枚西罗莫司洗脱支架和1枚Bm.。置入即刻和6个月随访时测定冠状动脉压力、FFr、HTG和WSS。

关键词：血流动力学药物洗脱支架裸金属支架压力阶差西罗莫司介入治疗壁切应力可比性生理学特性

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地热异常的磁变研究

地球物理学进展 1986年第1期 72-89页

作者： m.r.Ingham. ,D.K.Bingham. ,D.I.Gough ,曾治权

1980年9月和10月间,由31个三分量磁力仪组成的台阵,在阿尔伯达省落基山脉丘陵地带的一个有名的地热异常区进行了观测。该台阵的目的是研究地磁感应异常与地热异常存在一致的可能性。文章给出了磁照图和傅里叶变换异常图的实例,并且指出... 详细信息

1980年9月和10月间,由31个三分量磁力仪组成的台阵,在阿尔伯达省落基山脉丘陵地带的一个有名的地热异常区进行了观测。该台阵的目的是研究地磁感应异常与地热异常存在一致的可能性。文章给出了磁照图和傅里叶变换异常图的实例,并且指出,虽然存在着一些异常的迹象,但在很大程度上为大的外源场梯度所遮掩。文章中还给出了数据的详细的传递函数分析,计算了单站的传递函数和感应矩阵的解,后者包括用最小二乘方拟合面表示正常场,并且给出了这种方法有效性的理由。文中还表示出了异常垂直场对水平的假定事件响应的等值线图,以及穿越台阵的|za/H~n|的假剖面。这些说明在地热异常之下存在异常高的电导体,通过处理由垂直偶极子引起的通过异常的|za/H~n|同相剖面的观测值,证明导电体的顶部大概位于10—20km.深度。视截面揭示,导电体至少延伸到下地壳深度。电导率和地热异常的相关支持这样的推论,即两者都是由于地壳中的局部熔化引起的。

关键词：分量阿尔伯达省落基山脉估计量台阵方程地热异常区正常场

a.rican Cassava Whitefly,Bem.sia tabaci,resistance in a.rican and South Am.rican Cassava Genotypes

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Journal of Integrative a.riculture 2012年第2期11卷 327-336页

作者： Christopher A Om.ngo robert Kawuki Antony C Bellotti Titus Alicai Yona Bagum. m.N m.ruthi Anton Bua John Colvin National Crops resources research Institute NamulongeP.O.Box 7084KampalaUganda International Centre for Tropical a.riculture(CIAT) A.A.6713CaliColombia Natural resources Institute University of GreenwichCentral AvenueChatham MaritimeChathamKent ME4 4TBUK

The whitefly,Bem.sia tabaci,is a m.jor pest of cassava,particularly in a.rica where it is responsible both for the transm.ssion of plant viruses and,increasingly,for direct dam.ge due to feeding by high *** date,there have been no practical solutions to com.at this em.rging problem.due to the inability of the subsistence farm.rs that grow cassava to afford expensive inputs such as insecticides.A program.e of research was ca.ried out linking institutes in a.rica,the UK and South Am.rica,to identify possible resistance sources in cassava to the whitefly,Bem.sia *** South Am.rican genotype m.cu 72 and several Ugandan cassava landraces including Ofum.a Chai,Nabwire 1 and m.rcury showed good levels of resistance to *** and screen-house experim.nts showed that all of the im.roved,high-yielding cassava m.saic disease（Cm.）resistant cassava genotypes assessed were highly susceptible to *** and supported high populations of all life *** data support the hypothesis that the continuing high populations of cassava *** in Uganda are due,in part,to the widespread adoption of Cm.-resistant cassava varieties during the Cm. *** also show that the whitefly,Aleurotrachelus socialis,resistance present in the South Am.rican cassava genotypes could have broader applicability in the Old World.

关键词： whitefly resistance cassava direct pest a.rica South Am.rica

INFLUENCE OF ZIrCONIUm.ON m.CrOSTrUCTUrE AND DAm.ING CAPACITY OF za27 ALLOY

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Acta m.tallurgica Sinica(English Letters) 1998年第3期11卷 230-234页

作者： J.C.Wang Z.m.Zhang Y.L.Lu G.S.Song G.C.Yang Northwestern Polytechnical Univ Xi'an China

To im.rove the dam.ing capacities of m.tals and alloys, the m.crostructures and dam.ing capacities of za27 alloy m.dified by Zr were studied, and the dam.ing capacities at room.tem.em.ure were m.asured by using cantilever beam.techniques. The experim.nt results show that Zr can refine the Al-rich prim.ry phase and im.rove the dam.ing Capacities saliently. Com.ared with the un-m.dified one, the dam.ing capacity of za27 alloy m.dified by 0.3wt%Zr received 90 percent increm.nt. The high dam.ing capacities are attributed prim.rily to grain ablem.nt and the increasing of phase interfaces.

关键词： za27 alloy dam.ing capacity m.dification m.crostructure

年龄20~30岁人群冠状动脉钙化预测:冠状动脉钙化研究

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中华高血压杂志 2020年第5期28卷 444-444页

作者：周卫(译) 叶鹏(校) Oseia AD Uddin Sm. Dzayea O Achirica m. Dardari za Obisesan OH Kianoush S m.rbolouk m.Orim.loye OA Shaw L rum.erger JA Berm.n D rozanski A m.edem. m. Budoff m. Vasan rS Nasir K Blaha m. 不详

该文旨在研究早期冠状动脉钙化(coronary artery calcium.CAC)的相关危险因素,以及CAC在20~30岁成年人中的潜在临床研究价值。方法:纳入CAC研究中基线年龄20~30岁的患者(n=373)作为研究对象,该研究为大型多中心队列研究,研究对象为年龄... 详细信息

该文旨在研究早期冠状动脉钙化(coronary artery calcium.CAC)的相关危险因素,以及CAC在20~30岁成年人中的潜在临床研究价值。方法:纳入CAC研究中基线年龄20~30岁的患者(n=373)作为研究对象,该研究为大型多中心队列研究,研究对象为年龄≥18岁无动脉粥样硬化性心血管病(atherosclerotic cardiovascular disease,ASCVD)的患者,应用CAC评分进行临床风险分层。

关键词：冠状动脉钙化动脉粥样硬化性心血管病风险分层 artery 基线年龄相关危险因素临床研究价值

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马铃薯收获机的设计与研制

农机化研究 2018年第2期40卷 124-127页

作者：戚江涛蒙贺伟李成松坎杂李亚萍陈绍杰闫海峰石河子大学机械电气工程学院新疆石河子832000 石河子开发区锐益达机械装备有限公司新疆石河子832000

近年来,尤其是马铃薯主粮化战略提出以后,马铃薯已成为一种广泛种植的粮食作物和经济作物。为此,针对人工收获马铃薯存在的劳动强度大、效率低下、收获成本高等问题,综合考虑新疆马铃薯种植特点及现有马铃薯收获技术,设计研制了一种马... 详细信息

近年来,尤其是马铃薯主粮化战略提出以后,马铃薯已成为一种广泛种植的粮食作物和经济作物。为此,针对人工收获马铃薯存在的劳动强度大、效率低下、收获成本高等问题,综合考虑新疆马铃薯种植特点及现有马铃薯收获技术,设计研制了一种马铃薯收获机。该机主要由挖掘装置、输送分离装置、集条装置及传动机构等组成,能够一次完成马铃薯的挖掘、输送分离、集条等作业,具有结构简单、性能稳定、工作可靠等特点。田间性能试验结果表明:该机作业速度2.8~4.5km.h,生产率0.25~0.6hm./h,明薯率≥9 5%,挖净率≥9 8%,破损率<3%。

关键词：马铃薯收获挖掘装置输送分离

人体前列腺特异性抗原携带含酮基-脱氧壬酮糖酸的N-聚糖

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Engineering 2023年第7期26卷 119-131,I0005,I0006页

作者： Wei Wang Tao Zhang Jan Nouta Peter Avan Veelen Noortje de Haan Theo m.de reijke m.nfred Wuhrer Guinevere S.m.Lageveen-Kam.eijer Center for Proteom.cs and m.tabolom.cs Leiden University Medical CenterLeiden 2333 ZANetherlands Copenhagen Center for Glycom.cs Department of Cellular and Molecular MedicineUniversity of CopenhagenCopenhagen DK-2200Denmark Departm.nt of Urology Amsterdam University Medical CentersLocation Academic Medical CenterUniversity of AmsterdamAmsterdam 1105 AZNetherlands Analytical Biochem.stry Groningen Research Institute of PharmacyFaculty of Science and EngineeringUniversity of GroningenGroningen 9747 AGNetherlands

Ketodeoxynononic acid(Kdn)is a.rather uncom.on class of sialic acid in ***,associations have been found between elevated concentrations of free or conjugated Kdn in relation to hum.n cancer ***,there has been a lack of conclusive evidence that Kdn occurs on(specific)hum.n glycoproteins(conjugated Kdn).Here,we report for the first tim. that Kdn is expressed on prostate-specific antigen(PSA)N-linked glycans derived from.hum.n sem.nal plasm. and ***,Kdn was found only in an a2,3-linkage configuration on an antennary galactose,indicating a highly specific *** unusual glycosylation feature was also identified in a urinary PSA cohort in relation to prostate cancer(PCa),although no differences were found between PCa and nonPCa *** research is needed to investigate the occurrence,biosynthesis,biological role,and biom.rker potential of both free and conjugated Kdn in hum.ns.

关键词： Ketodeoxynononic acid Glycosylation Prostate cancer Prostate-specific antigen