论两汉时期皖南铜与皖南经济

皖南地区铜矿资源丰富,两汉时期的皖南属于丹阳郡,丹阳铜以质优量多而闻名全国.两汉时期皖南铜矿得到了较大规模的开采和冶炼,同时兴起了铸钱和铜镜制造业,从而扩大了皖南地方政府的财政来源,增强了皖南地区的经济实力,推动了皖南的农业和其它行业的发展,可以说皖南铜在皖南经济发展中发挥了极其重要的作用.     

India's policy on Diego Garcia and its quest for security in the Indian Ocean

ABSTRACT

The ongoing contention between Mauritius and the UK over the sovereignty of the Diego Garcia presents a difficult challenge for Indian foreign policy-makers. New Delhi's principled opposition to colonialism and its historical relationship with Port Louis has made it steadfastly support the Mauritian claim. However, such principled foreign policy militates against India's quest to balance the growing Chinese influence in the Indian Ocean. Insofar, Diego Garcia allows the US Navy to maintain an active presence in the Indian Ocean, thereby keeping the Chinese naval power at bay. Balance of power considerations notwithstanding, the expanding trajectory of the Indo-US strategic partnership also demands New Delhi to weigh the burden of its policies on Diego Garcia carefully. This article juxtaposes India's historical record on Diego Garcia during the Cold War with its contemporary approach to the issue. In doing so, it sheds further light on India's strategic decision-making in the Indian Ocean, its dilemmas in confronting a genuinely hostile maritime power in the region, and deliberates on potential options for dispute resolution which can not only satisfy Mauritian demands but also ensure a healthy balance of power in the Indian Ocean.     

论第二次世界大战前罗马尼亚的平衡外交

慕尼黑会议之后,德国在中东欧占据了优势,英法在对德绥靖走到尽头后,逐步趋向对德遏制,并试图在东欧组建反德阵线。在两大集团争夺东欧的情况下,罗马尼亚推行在所有大国间保持平衡的政策。一方面,罗马尼亚与德国签订经济协定,以经济上的让步减轻德国对它的压力,并谋求从政治上得到相应的回报;另一方面,寻求英法的政治保障,加强自身的安全,但同时拒绝加入英法匆忙组建的反德阵线,使自己置身于冲突之外,期待出现有利于自己的时机。     

论南京政府时期的中央与地方财政收支结构

南京国民政府时期中央与地方财政收支结构的制定与调整,是南京国民政府在统一全国的过程中重新确定中央与地方关系的一项重要举措,也是中国财政体制现代化进程中最为重要的一步。从中央与地方财政收支结构划分的原则、平衡性及两者的规模比例等方面来看,南京国民政府时期的中央与地方财政收支结构的划分较为合理,但这一划分仍有许多不足。     

Magnetization of Ancient Ceramics

The saturation magnetization σ of soft baked pottery appears to be determined during the firing process by transitions between the iron oxides magnetite, maghemite, hematite and perhaps goethite. The finding of large variations in σ motivated the design and construction of a ‘magnetization–gravitation’, or ‘MG’, balance for rapid non‐destructive magnetization measurements. The first results with this MG balance are presented: iso‐σ contours, typical histograms and correlations with colour features. Practical MG applications are summarized.     

The analysis of copper artifacts of the copper inuit

Metallography and neutron activation analysis have been used to investigate copper artifacts from 19th century archaeological sites associated with the “Copper Inuit” of the west-central Canadian Arctic. A knowledge of the source of the copper from which the artifacts were manufactured - native (local) copper or European (exotic) copper - is important, for example, to studies of the effects of European contact on utilization of native copper and on the general lifestyle of the Copper Inuit. Trace element analysis by neutron activation using the SLOWPOKE reactor has allowed local native copper, from the Coppermine River and Victoria Island, NW Territories, to be clearly distinguished from 19th century European smelted copper, which was found to contain higher concentrations of arsenic, antimony, nickel and selenium. Moreover, optical and scanning electron metallography revealed significant microstructural differences between native copper and the 19th century smelted copper. As a consequence it was possible to differentiate between native copper archaeological artifacts and those produced from smelted copper.     

Metallurgical analysis of copper artifacts from Cahokia

Copper artifacts from Cahokia Mounds, Illinois were analyzed from a materials science perspective to shed light on techniques used by Mississippian copper workers to deform nuggets of native copper into thin sheets. Eight small copper pieces from a copper-working site at Cahokia’s Mound 34 were subjected to metallographic examination. Replication experiments thereafter recreated features of the artifacts under controlled conditions. It is concluded that copper sheets were thinned through repeated cycles of hammering and annealing performed at temperatures achievable in an open wood fire. The welding of sheets to create multilayered objects was not observed in any artifacts and could not be accomplished experimentally. Additionally, a possible cutting method used on some artifacts was identified.     

Determining the Provenance of native copper artifacts from Northeastern North America: evidence from instrumental neutron activation analysis

The emergence of archaeological interest in native copper in the mid-1800s developed in concert with explanations that privileged the Lake Superior area over other potential sources of copper. Most scholars have thus assumed that when copper artifacts first appeared in Northeastern North America, they arrived as finished implements or were locally made from Lake Superior raw materials. Procurement models that point to Lake Superior as the sole source of native copper have been widely accepted in the absence of systematic large-scale testing. This article evaluates the dominant model for native copper procurement and presents trace element data derived from instrumental neutron activation analysis (INAA) to determine whether hunter-gatherers in the Northeast utilized one dominant source of copper or in fact exploited a number of geological deposits. I specifically report on the chemical characterization of copper from 13 discrete geological deposits and 18 archaeological sites dating to the Late Archaic (ca. 5000–3000 B.P.) and Early Woodland (ca. 3000–2000 B.P.) periods to suggest that the dominant model for native copper procurement is oversimplified.     

Evaluating copper isotope fractionation in the metallurgical operational chain: An experimental approach

Until today, raw material information of copper (Cu) objects is mostly gained from impurities and trace elements and not from the Cu itself. This might be obtained using its stable isotopes. However, isotopic fingerprinting requires the absence of fractionation during the smelting process. The Cu isotope evolution during outdoor smelting experiments with Cu sulphide ore was investigated. It is shown that external materials, in particular furnace lining, clay, manure and sand, alter the isotopic composition of the smelting products. Cu isotopes are fractionated within low viscosity slag derived from matte smelting. The produced metallic Cu has a Cu isotope signature close to the ore.     

商周时期南北方铜矿开采技术比较研究--以鄂赣交界地带和辽西地区为例

本文选取了鄂赣交界地带和辽西地区的4座晚商至西周早中期的古铜矿遗址,分别从探矿技术、开采技术、开采工具、相关配套设施和选矿技术等方面对南北两区域古铜矿的开采技术进行全面比较,并试图从两地的自然环境、矿物品质以及生产组织方式等不同方面来解释出现这种差异的原因。