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320篇 您的检索式:作者名="Siri"
    题名 作者 年代 出处 被引量
1水稻高温热害发生机理与耐高温遗传基础研究显示文摘在全球气候变暖的大环境下,极端天气频繁发生,高温已经成为制约水稻产量和品质的主要因素之一。培育耐高温的水稻品种是防止高温热害最简便有效的途径。现代分子技术的发展和水稻功能基因组研究的深入,为水稻耐高温遗传机制的剖析提供了有效手段。本文综述了近年来水稻高温热害的发生机理和耐高温遗传基础方面的研究进展,包括耐高温QTL定位与克隆、转录组研究、蛋白组研究等,以期为深入剖析水稻耐高温的分子机制和培育耐高温的新品种提供有益参考。李飞 卓壮 U.A.Kapila Siri Udawela 高用明 石英尧 2013植物遗传资源学报2013,14,1:19
2骨密度测量中精密度的重要性显示文摘骨密度测定 ,不论采取何特殊技术 ,即使严格地按照厂家建议的操作程序 ,也常常不能达到完美的重复性。必须确定每台骨密度仪不同骨骼部位的精确度。精密度 ,如标准差平均方根或变异系数平均方根 ,被用来确定骨密度的变化 ,即精密度决定最小显著性变化值和随访需要的至少时间间隔。除非确定了精密度 ,否则就不能确定任何水平的统计可信度最小显著性变化值 。Sydney Lou Bonnick C.Conrad Johnston Michael Kleerekoper Robert Lindsay Paul Miller Louis Sherwood Ethel Siris 周琦 程晓光 2002中国骨质疏松杂志2002,8,1:12
3Experimental and numerical study of the fragmentation of expanding warhead casings by using different numerical codes and solution techniques显示文摘There has been increasing interest in numerical simulations of fragmentation of expanding warheads in 3D.Accordingly there is a pressure on developers of leading commercial codes,such as LS-DYNA.AUTODYN and IMPETUS Afea.to implement the reliable fracture models and the efficient solution techniques.The applicability of the Johnson—Cook strength and fracture model is evaluated by comparing the fracture behaviour of an expanding steel casing of a warhead with experiments.The numerical codes and different numerical solution techniques,such as Eulerian,Lagrangian.Smooth particle hydrodynamics(SPH).and the corpuscular models recently implemented in IMPETUS Afea are compared.For the same solution techniques and material models we find that the codes give similar results.The SPH technique and the corpuscular technique are superior to the Eulerian technique and the Lagrangian technique(with erosion) when it is applied to materials that have fluid like behaviour such as the explosive and the tracer.The Eulerian technique gives much larger calculation time and both the Lagrangian and Eulerian techniques seem to give less agreement with our measurements.To more correctly simulate the fracture behaviours of the expanding steel casing,we applied that ductility decreases with strain rate.The phenomena may be explained by the realization of adiabatic shear bands.An implemented node splitting algorithm in IMPETUS Afea seems very promising.John F.MOXNES Anne K.PRYTZ Фyvind FRФYLAND Siri KLOKKEHAUG Stian SKRIUDALEN Eva FRIIS Jan A.TELAND Cato DФRUM Gard ФDEGARDSTUEN 2014Defence Technology(防务技术)2014,10,2:12
4籼稻开花期耐热性鉴定与QTL定位分析显示文摘高温热害是水稻生产的重要制约因素之一。本研究利用籼稻恢复系蜀恢527为轮回亲本,以来自不同来源的6个籼稻品种为供体亲本构建了131个BC2F3:4选择导入系群体,在正常大田和温室大棚高温胁迫条件下进行连续两年(2011年和2012年)的耐热性鉴定,并结合基因型分析进行产量相关性状和耐热性QTL定位。耐热表型分析结果表明,尽管轮回亲本和供体本身不具备很强的耐热性,但绝大多数导入系后代出现了耐热性的超亲分离。本研究通过分子标记基因型和表型分析的单向方差分析进行产量相关性状(每穗总粒数,结实率,千粒重,单株产量)和耐热性(热胁迫指数)QTL发掘,共定位的到39个产量相关性状QTL,贡献率为7.3%-39.7%和12个耐热性QTL,贡献率为14.7%-30.2%。12个耐热性QTL中,有9个也在产量相关性状中检测到。40例QTL有利等位基因来自供体亲本,61.5%的QTL能在不同群体或环境中被重复检测到。产量性状和耐热性QTL在染色体上大多成簇分布,每个簇往往同时影响几个性状(多效性)。其中,第2染色体上RM341(Bin2.8)对每穗总粒数、千粒重和单株产量影响较大;第7染色体RM051(Bin7.1)则是主要控制结实率、单株产量和耐热指数等性状。第10染色体RM258(Bin10.5)则是主要控制每穗总粒数和耐热指数等性状。研究结果将为水稻耐热性改良及其分子标记辅助育种提供有益信息。刘周 唐启源 李飞 U.A.Kapila Siri Udawela 项超 高用明 石英尧 2015分子植物育种2015,13,1:5
5Questioning Complacency:Climate Change Impacts,Vulnerability,and Adaptation in Norway显示文摘对欧洲气候变化影响的估计大多数都是在产业或生态系统的水平上进行的,对于气候变化对社会究竟意味着什么没有充分的理解。而且主要的焦点在于技术适应性,而对气候变化适应性的过程没有太多关注。在本研究中,我们对最近在挪威进行的一项关于气候变化影响、脆弱性和适应性的调查的发现进行了介绍和分析,目的在于认识气候变化的更广泛社会影响。主要分为三个部分:首先,潜在的极限和间接影响可能比直接的,产业性的影响更重要。其次,高度敏感的产业、区域和社区与不同水平的社会脆弱性相结合就会同时产生得者和失者。再次,国家适应能力的高水平掩盖了适应性的障碍和限制,特别是对于那些对气候变化最脆弱的群体。基于这些结果,我们对挪威和其它欧洲国家对气候变化影响和适应性的自满情绪表示质疑。我们认为应当提高对气候变化影响的社会背景及其脆弱性和适应性形成过程的重视。Karen O'Brien Siri Eriksen Linda Sygna Lars Otto Naess 2006AMBIO-人类环境杂志2006,35,2:5
6Edge Computing-Based Joint Client Selection and Networking Scheme for Federated Learning in Vehicular IoT显示文摘In order to support advanced vehicular Internet-of-Things(IoT)applications,information exchanges among different vehicles are required to find efficient solutions for catering to different application requirements in complex and dynamic vehicular environments.Federated learning(FL),which is a type of distributed learning technology,has been attracting great interest in recent years as it performs knowledge exchange among different network entities without a violation of user privacy.However,client selection and networking scheme for enabling FL in dynamic vehicular environments,which determines the communication delay between FL clients and the central server that aggregates the models received from the clients,is still under-explored.In this paper,we propose an edge computing-based joint client selection and networking scheme for vehicular IoT.The proposed scheme assigns some vehicles as edge vehicles by employing a distributed approach,and uses the edge vehicles as FL clients to conduct the training of local models,which learns optimal behaviors based on the interaction with environments.The clients also work as forwarder nodes in information sharing among network entities.The client selection takes into account the vehicle velocity,vehicle distribution,and the wireless link connectivity between vehicles using a fuzzy logic algorithm,resulting in an efficient learning and networking architecture.We use computer simulations to evaluate the proposed scheme in terms of the communication overhead and the information covered in learning.Wugedele Bao Celimuge Wu Siri Guleng Jiefang Zhang Kok-Lim Alvin Yau Yusheng Ji 2021China Communications2021,18,6:3
7Caligus rogercresseyi as a potential vector for transmission of Infectious Salmon Anaemia (ISA) virus in Chile显示文摘Karin Oelckers Siri Vike Henrik Duesund Javier Gonzalez Simon Wadsworth Are Nylund 2014Aquaculture2014,,:2
8Role vessel size as a predictors for the occurrence of in-stent restenosis in patients with diabetes mellitus显示文摘Suselbeck T Latsch A Siri H 2001Am J Cardiol2001,88,3:1
9Sequence and expression of routine type I hair keratins mHa2 and mHa3显示文摘Winter H Siry P Tobiasch E 1994Exp Cell Res1994,212,:1
10A multidisciplinary systems-based practice learning experience and its impact on surgical residency education显示文摘Siri J Reed AI Flynn TC 2007J Surg Educ2007,64,6:1
11Role of vessel size as a predictor for the occurrence of in-stent restenosis in patients with diabetes mellitus显示文摘Suselbeck T Latsch A Siri H 2001Am J Cardiol2001,88,3:1
12Bone mineral density thresholds for pharmacological intervention to prevent fractures显示文摘Siris E S Chen Y T Abbott T A 2004Arch Intern Med2004,164,10:1
13Gated magnetic resonance imaging of normal and hypertrophied murine hearts 显示文摘Siri FM Jelicks LA Leinwand LA 1997Am J Phy-siol1997,272,52:1
14Quality of urban forest carbon eredits 显示文摘Poudyal N C Siry J P Bowker J M 2011Urban Forestry & Urban Greening2011,10,3:1
15Clinical features of Sturge-We bet syndrome without facial nevus: five novel cases显示文摘Siri h Giordano L Accorsi P 2013Eur J Paediatr Neurol2013,17,1:1
16Efficient synthesis of substituted dihydrotetraazapentacenes显示文摘Seillan C Brisset H Siri O 0,,18:1
17Purification and characterization of dioscin-alpha-L-rharnnosidase from pig live显示文摘 YU Hongshan ZHANG Chunzhi 2005Chem Pharm Bull2005,53,8:1
18Osteoporosis and fracture risk in women of different ethnic groups显示文摘BARRETT-CONNOR E SIRIS E S WEHREN L E 2005J Bone Miner Res2005,20,2:1
19Current distribution control for parallel connected converters -part I and II显示文摘SIRI K LEE C Q WU T F 1992IEEE Trans Aerosp Electron Syst1992,28,3:1
20Magnetic properties of PbFe2/3W1/3O3 - PbTiO3 solid solutions显示文摘Liliana Mitoseriu Daniele Marre Antonio Sergio Siri 2003Appl Phys Lett2003,83,26:1
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