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《岩土力学》2014,(8)
<正>中国土木工程学会第12届全国土力学及岩土工程学术大会将于2015年7月在上海举办。这次会议由中国土木工程学会土力学及岩土工程分会主办,上海交通大学、华东建筑设计研究院有限公司、同济大学、上海市力学学会岩土力学专业委员会、上海市土木工程学会土力学与岩土工程专业委员会等承办。第12届学术大会是继天津(1962)、武汉(1966)、杭州(1979)、武汉(1983)、厦门(1987)、上海(1991)、西安(1995)、南京(1999)、北京(2003)、重庆(2007)和兰州(2011)召开的前11届系列会议之后我国土力学与岩土工程领域的又一次学术盛会。 相似文献
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上中国力学学会岩土力学专业委员会、中国土木工程学会土力学及岩土工程分会、中国水利学会岩土力学专业委员会、中国建筑学会地基基础分会和中国振动工程学会土动力学专业委员会共同主办,由西安交通大学、西安理工大学、长安大学、西安科技大学、西安建筑科技大学和西安工业学院共同承办的“第五届全国青年岩土力学与工程会议”于2004年9月26 相似文献
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《岩土力学》2005,(9)
殷建华教授在意大利都灵荣获国际岩土力学计算方法与进展协会2005年度杰出贡献奖2005年6月19~24日,第11届国际岩土力学计算方法与进展协会国际会议(11th Conference ofInternational Association for Computer Methods and Advances in Geomechanics–IACMAG)在意大利历史名城都灵(Turin)隆重召开,香港理工大学土木与结构工程系殷建华教授荣获“国际岩土力学计算方法与进展协会”(IACMAG)2005年度地区杰出贡献奖。该协会的主席德赛教授(Professor CS Desai)和第11届国际会议主席巴拉教授(Professor G Barla)向殷建华教授颁发了… 相似文献
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《岩土力学》2014,(1):292
<正>会议背景和宗旨2008年11月中国力学学会岩土力学专业委员会和中国土木工程学会土力学及岩土工程分会联合在北京召开了第1届全国岩土本构理论研讨会,有力地推动了我国的岩土本构理论研究。中国土木工程学会于2010年12月批准成立了"土的本构关系及强度理论专业委员会",2011年8月"专业委员会"在兰州召开了第1次工作会议,2013年5月在桂林理工大学召开专业委员会主任副主任学术交流会。鉴于第1届全国岩土本构理论研讨会已有5年和近年我国不少学者在岩土材料的本构理论及其应用方面有许多创新性研究成果,专业委员会决定于2014年5月在上海大学召开第2届全国岩土本构理 相似文献
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Zusammenfassung Die Neubestimmung der Struktur des Finnemanits, Pb5Cl(AsO3)3, (a
0=10,322(7) Å,c
0=7,055(6) Å RaumgruppeC
6h
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-P63/m) ergab nach einer Verfeinerung der Atomkoordinaten und der anisotropen Temperaturparameter von Pb, As und Cl bzw. der isotropen für die Sauerstoffe für 463 beobachtete Reflexe einen konventionellenR-Wert von 0,076. Die Struktur stellt ein aus Pb(1)–O und Pb(2)–O–Cl Polyeder sowie [AsO3]-Pyramiden dreidimensional verknüpftes Gerüst dar. Dieses Gerüst steht in enger Beziehung zur Struktur des Chlorapatits.
Mit 3 Abbildungen 相似文献
The crystal structure of finnemanite, Pb5Cl(AsO3)3, with a comparison to the structure-type of chlorapatite, Ca5Cl(PO4)3
Summary The redetermination of the crystal structure of finnemanite, Pb5Cl(AsO3)3, (a 0=10.322(7) Å,c 0=7.055(6) Å; space groupC 6h 2 -P63/m) converged for the refinement of the atomic coordinates, the anisotropic temperature parameters for Pb, As and Cl and isotropic for the O-atoms to a final conventionalR-value of 0.076 for 463 observed reflections. The crystal structure consists of a three-dimensional network built up of Pb(1)–O and Pb(2)–O–Cl polyhedra as well as [AsO3]-pyramides. This network is closely related to the structure of chlorapatite.
Mit 3 Abbildungen 相似文献
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A fossil assemblage collected around 3.5 m amsl from Ezeiza, Buenos Aires province, have AMS 14C ages of ca. 33,000 to ca. 40,000 yr BP, whereas in the literature is a report of a conventional 14C age of >43,000 yr BP. An OSL age from the overlying deposit corresponds to ca. 22,000 yr. The samples contain marine fossils: mollusks, balanids and corals (Astrangia). La Coronilla (Uruguay, attributed to MIS 5e) is the locality most related to Ezeiza faunistically, despite is not the nearest one. In consequence, the relationship should be addressed to a more similar age and environment than others. The fauna indicates a higher water temperature than today. In Ezeiza exclusively cold water taxa are absent, and we found seven warm taxa with their southern distribution limit displaced northwards today, plus other six at their southern distribution limit. Around 60% of all the species and more than 70% of the individuals are of warm-temperate waters. In sum, although prima facie the numerical ages would locate the deposit in MIS3, faunistic, temperature, and height evidences show that the Ezeiza mollusk assemblage belong to MIS5e. A stronger than presently Brazil warm current, reaching Southern latitudes, may explain the changes in geographical ranges. 相似文献
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A deeply buried horizon containing mint‐condition flint artefacts was discovered in 2006 during archaeological investigations in advance of major roadworks near Dartford, Kent, in southeast England. The context of the artefacts and the freshness of their condition suggest this horizon represents a buried occupation surface. Optically stimulated luminescence dating places this horizon in the period Marine Isotope Stage 5d–5b, early in the British Devensian glaciation. This paper describes details of the artefacts, their context and dates, and outlines how this apparent occupation fits in with the wider pattern of Neanderthal settlement in Britain and northwest Europe in the later Pleistocene. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
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Clearly defined distal tephras are rare in rockshelter sediment records. Crvena Stijena, a Palaeolithic site in Montenegro, contains one of the longest (> 20 m) rockshelter sediment records in Europe with deposits ranging in age from Middle Pleistocene to mid-Holocene. A distinctive tephra is clearly exposed within the well stratified record approximately 6.5 m below the present land surface. We present geochemical data to confirm that this tephra is a distal equivalent of the Campanian Ignimbrite deposits and a product of the largest Late Pleistocene eruption in Europe. Originating in the Campanian volcanic province of southwest Italy, this tephra has been independently dated to 39.3 ka. It is a highly significant chronostratigraphic marker for southern Europe. Macrostratigraphic and microstratigraphic observations, allied with detailed particle size data, show that the tephra layer is in a primary depositional context and was transported into the rockshelter by aeolian processes. This site is unique because the tephra forms an abrupt boundary between the Middle and Upper Palaeolithic records. Before they can be used as chronostratigraphic markers in rockshelter and cave-mouth environments, it is essential to establish the stratigraphic integrity of distal tephras and the mechanisms and pathways involved in their transport and deposition. 相似文献