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71.
阜阳博物馆收藏一组宋代银铤,均扁平束腰,两端呈弧形,正面有戳印铭文,背部密布蜂窝状铸孔。这组银铤均为出土于阜阳境内的窖藏品,依其铭文不同可分七式,现介绍如下。Ⅰ式:长161、腰宽64、两端各宽85、厚17mm,重1950克。铭文“聂□□”,字迹漫漶不清。体表粗糙呈暗灰色(插四图1)。Ⅱ式:长123、腰宽43、两端各宽67、厚15mm,重980克。右侧上部铭文“朱雀门外马安铺”,右下部铭文“真花□银”,第三字左边金字旁,右边模糊难识,疑为“钱”字。该铤左边上部铭文“马安铺”,左下部铭文“出门税”。体表灰白色、正面光滑细腻,周缘有水波纹边栏(插四图… 相似文献
72.
大安西夏钱,为西夏惠宗李秉常大安年(1074—1084)铸,分为西夏文大安元宝和汉文大安通宝钱,后者为隶书之风格,前所见有背穿上仰月纹,大字版、直读、径25·1、穿7·5、厚1·3mm,青铜泛微黄,系内蒙林西县三道营子村窖藏发现。当时泉界轰动,泉坛前辈卫月望和吴宗信老先生所考证,此币风格、铸造工艺有西夏之气息,无辽币之风韵,定为西夏大安年铸西夏币;又者,清代孟麟《泉布统治》录一枚,也已经考大安通宝为西夏之物。从“大安通宝”的出土情况看,主要发现于西夏故地。除1981年内蒙古林西县三道营子窖藏出土一枚外,辽朝境内至今无第二枚出土。而西… 相似文献
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唐代渤海国时期,今吉林省中东部地区的冶铁业有了较大发展;铁器的使用更加广泛,尤其是铁制生产工具已被大量应用于农、渔及狩猎各业;冶铁技术也有了一定的进步.本文拟分别介绍上述三个方面的基本情况并做出评价. 相似文献
76.
新世纪前期旅游业发展预测 总被引:1,自引:0,他引:1
旅游业是永恒的朝阳产业。根据世界旅游业和我国旅游业的发展态势,作从八个方面预测我国旅游业的未来。 相似文献
77.
Chuang-Sheng Walter Yang Reginald DesRoches Glenn J. Rix 《Journal of Earthquake Engineering》2013,17(4):579-594
This study develops seismic fragility curves for vertical-pile-supported wharves commonly found in the western United States. Nonlinear time-history analyses of a two-dimensional numerical model under two ground motion suites are performed. The results show that the jumbo container cranes increase by 10.8% in the wharf deck drift. By using the experiment-based limit states, the proposed fragility curves demonstrate that, at a PGA of 0.50 g, the probabilities of exceeding slight, moderate, extensive, and complete limit states are approximately 23.0%, 7.0%, 4.0%, and 3.0%, respectively, while at a PGA of 1.00 g, the exceeding probabilities increase to 44.0%, 19.0%, 14.0%, and 11.0%, respectively. 相似文献
78.
Yun-Tian Wu Tian-Qing Lan Yan Xiao Yeong-Bin Yang 《Journal of Earthquake Engineering》2013,17(4):652-678
During the past decades, various analytical macroscopic models of structural walls have been developed for simulating the seismic behavior of reinforced concrete (RC) walls. Due to the inherently complicated characteristics of RC walls, macroscopic models that can capture all the important response characteristics with good accuracy and applicability are very challenging to establish. A thorough review of the four main types of mathematical macro models of RC walls, i.e., the vertical-line-element-model, the 2-D shear panel element model, the equivalent truss model and the fiber-based model, is presented to discuss the methodology behind each model and examine the corresponding merits and disadvantages. Suggestions are also made for the further research of the macro modeling of structural walls. 相似文献
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Dongya Y. Yang Li Liu Xingcan Chen Camilla F. Speller 《Journal of archaeological science》2008,35(10):2778-2785
Recent zooarchaeological studies on water buffalo (Bubalus sp.) remains from China and south Asia question the traditional view that water buffalo were first domesticated in Neolithic China over 7000 years ago. The results from several recent population genetic studies of modern domesticated buffalo (Bubalus bubalis) are not consistent with each other, placing the original center of buffalo's domestication in south Asia, southeast Asia, or China. This paper reports a study using an ancient DNA approach to analyze water buffalo remains from Neolithic sites in north China to investigate their affinities with modern domesticated water buffalo, and to shed light on the origin of modern domesticated water buffalo in China.A 169 bp fragment of D-loop mitochondrial DNA was successfully amplified and verified for 13 of 24 bone samples obtained from seven archaeological sites along the Wei River valley in Shaanxi Province, China. The bone samples which yielded positive DNA can be dated to 8000–3600 cal. BP. The phylogenetic analysis of the obtained DNA sequences along with modern water buffalo sequences indicated that the ancient water buffalos were not the direct ancestor of modern domesticated water buffalo. However, the phylogenetic analysis, along with BLAST searches of these ancient DNA sequences, did demonstrate their relatedness to water buffalo more so than to any other bovid species, confirming the existence of indigenous wild (but now extinct) water buffalo species (B. mephistopheles) in ancient China.The DNA analysis of these ancient remains failed to establish direct links between modern domesticated water buffalo (B. bubalis) and indigenous water buffalo (B. mephistopheles) from ancient China. If further DNA studies of more ancient remains from other regions of China confirm the observation of solely indigenous water buffalo species in ancient China, it would suggest modern water buffalo might not have been first domesticated in China. 相似文献