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81.
本文以形制最具代表性的陶鬲为切入点,对罗山天湖商代墓葬出土陶器文化因素构成和墓葬葬俗进行了分析,认为罗山天湖商代墓葬与晚商殷墟类型存在明显差异,而这种差异也正是晚商中心文化势力衰落的一个表现形式。  相似文献   
82.
目前,对我国出土的紫色八棱柱形文物的研究内容主要集中在材质和制作工艺上,对其形制来源、功能用途等方面的系统论述相对较少。为探究周陵贺家战国秦墓出土的一件紫色八棱柱器物的表面特征、颗粒形态、材质成分、制作工艺等信息,利用超景深三维视频显微系统、偏光显微镜、X射线荧光光谱仪(XRF)、X射线衍射仪(XRD)、激光拉曼光谱仪(Raman)等分析方法进行了检测。并在此基础上对八棱柱形制的来源与演变、材质的来源、功能用途等方面进行初步推测,结果表明该紫色八棱柱微观形态为紫色和黄色晶体颗粒夹杂分布,主要成分为中国紫(硅酸铜钡),推测为二到三次烧制而成。通过文献查阅及梳理,推测八棱柱的形制受中国本土道家文化的影响较大,其主要功能为口含或窍塞。本工作对于我国出土紫色八棱柱的系统研究具有重要的借鉴意义。  相似文献   
83.
84.
A combined review of three volumes in the series Formation and Interpretation of Old Testament Literature. If these volumes intend to give an impression of the discussion among scholars of the Deuteronomistic History, and of the composition of the Pentateuch, the series is a failure, presenting mostly one side of the debate. On the other hand, the articles on the ancient reception history (nothing modern here) are excellent introductions into that discussion.  相似文献   
85.
Citizenship and Immigration Canada's new citizenship guide, Discover Canada, received significant coverage in the national media and among popular bloggers when it was released in late 2009. Among the more controversial responses were allegations that the guide served a partisan political purpose. It was “an incremental step in the rebranding of Canada into a conservative country, full of people more inclined to vote Conservative.” This paper investigates the veracity of this claim by documenting the historical evolution of Canada's citizenship guides. It finds that while Discover Canada departs notably from its immediate, Liberal-sponsored, predecessors, it is not so different from the initial documentation produced under the Liberal governments of Pierre Elliott Trudeau. To suggest that the new guide has fundamentally altered the national image is therefore a profound exaggeration.  相似文献   
86.
The determination of groundstone tool sources bears the potential to examine aspects like raw material selection and preference, mobility, trade and exchange patterns, control over resources and long term use of raw material sources. The discovery of the Neolithic/Chalcolithic basanite bifacial quarry of Giv'at Kipod in the Jezreel Valley, Israel, provides the opportunity of raw material centred provenance studies of bifacials in the southern Levant. The basis for reliable provenance analyses is a clear geochemical characterization of the extraction site and its discrimination from other potential sources. To achieve this, the Miocene magmatic rocks of the Jezreel Valley were sampled and analysed by XRF and La-ICP-MS. The geochemical evaluation, combined with cluster analyses, resulted in a clear discrimination of the Giv'at Kipod lava from other basaltic sources in the area. Based on the geochemical field data, a Giv'at Kipod provenance for six bifacial tools found in three archaeological sites dated to the Neolithic and the Chalcolithic periods was established. The results suggest that the quarry was in use for several millennia. This pilot study demonstrates that for provenance analyses lava outcrops in the southern Levant can be geochemically discriminated from each other on a very small spatial scale, on the basis of a detailed field sampling and the application of multivariate methods.  相似文献   
87.
This paper presents a further step in the integral documentation of prehistoric rock art, combining 2D and 3D digital recording techniques. Image processing and digital enhancement techniques are an invaluable aid to obtain high quality and accurate 2D recordings, especially when working with faint motifs or complex superimpositions. But what constitutes a real breakthrough is the possibility of combining 2D digital tracings with metric 3D models, providing a whole set of metric outputs that improve our understanding of the motifs in their context and, at the same time, can be used to deliver accurate metric reproductions.  相似文献   
88.
38 brachiopod species in 27 genera and subgenera are described from the Yudong Formation in the Shidian-Baoshan area, west Yunnan, southwest China. New taxa include two new subgenera: Unispirifer (Septimispirifer) and Brachythyrina (Longathyrina), and seven new species: Eomarginifera yunnanensis, Marginatia cylindrica, Unispirifer (Unispirifer) xiangshanensis, Unispirifer (Septimispirifer) wafangjieensis, Brachythyrina (Brachythyrina) transversa, Brachythyrina (Longathyrina) baoshanensis, and Girtyella wafangjieensis. Based on the described material and constraints from associated coral and conodont faunas, the age of the brachiopod fauna from the Yudon Formation is considered late Tournaisian (Early Carboniferous), with a possibility extending into earlyViséan.  相似文献   
89.
A. SAEEDI  R. REZAEE  B. EVANS 《Geofluids》2012,12(3):228-235
During a geo‐sequestration process, CO2 injection causes an increase in reservoir pore pressure, which in turn decreases the reservoir net effective stress. Changes in effective stress can change all the reservoir and cap‐rock properties including residual saturations. This article presents the results of an experimental work carried out to understand the potential change in the volumes of residually trapped CO2, while the porous medium tested underwent change in the net effective stress under in‐situ reservoir conditions of pore pressure and temperature. The experimental results obtained show that an initial 1725 psi (11.9 MPa) decrease in the net effective pressure caused 1.4% reduction in the volumes of residually trapped CO2, while another 1500 psi (10.3 MPa) reduction caused a further 3.2% drop in the residual saturation of CO2.  相似文献   
90.
根据墓葬形制和随葬品特征,可以推定扬州甘泉山二号墓主是东汉晚期而不是东汉早期的广陵王。文献记载也表明,终东汉之世,广陵国的王国地位始终保持,附近发现的"广陵王玺"金印为东汉晚期或使用至东汉晚期的可能性都存在。  相似文献   
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