Papers by Keyword: Yunnan

Abstract: The invention of Chinese paktong was well-known in ancient China from at least the fourth century AD and is considered to be one of the most important inventions in the history of metallurgy, facilitating economic and material exchange in the West during the 17-19^th centuries. As recent investigations into the relevant archives of paktong show, it is recognized that the early industry of such metal had intimate connections with Yunnan and Sichuan provinces. Due to the recent year research on some ancient metallurgical remains of Chinese paktong in Yunnan, it shows that the slags in the sites of Mouding and Jiangyin were from the specific metallurgical process, probably by intentionally accumulating nickel with iron. Both sites were likely to be the places of mining or refining and roasting the ores, but the outcomes from them might be the roughly finished products.

Abstract: Geza arc is the important parts of Yidun island arc in southwest of Sanjiang tectonic magmatic belts, it located in the southern tip of the Yidun island arc, which is a newly discovered copper polymetallic ore concentration area in the recently years in China. Based on the development stage of island arc orogenic, the distribution of intrusive rocks, composition, geochemical characteristics, Geza island arc granits belt can be divided into three belts. Geza island arc several typical porphyry deposits Pb isotopic data show that Pb²⁰⁶/Pb²⁰⁴ 17.680~19.165, Pb²⁰⁷/Pb²⁰⁴ 15.453~15.773,change in scope, Pb²⁰⁸/Pb²⁰⁴ 37.730~39.654. Most of samples are normal lead, Pb isotopes focused on the side of orogenic evolution line and the lower crust range,with the characteristics of crust-mantle mixed source.

Abstract: Geza island arc located in the southwest Sanjiang tectonic igneous rock belts which was a products of Ganzi-Litang oceanic crust diving to Zhongdian Landmasses in late Triassic. Lithogeochemical characteristics shown that the porphyry(porphyrite) and island-arc granite rocks have the same rock series (high-K calc-alkaline) and the same genetic type (I-type granite); these rocks trace elements similar to the granite of island arc,which enriched in Ba, La, Hf, Au,chalcophile elements Cu,Pb, siderophile elements Mo, Ni, and depleted in Rb, Nb, P, Ti. In this region, the similarities of porphyry and local acidic volcanic rocks in the main elements, REE and other trace elements and the composition suggest that they both have the same or similar magmatic source rocks. It is shown that the characteristics of the rock with the island arc granite partial melting of source rock, that may come from the arc type volcano rock or island arc volcano rock cognate magma evolution.

Abstract: This article analyses the existing problems in the management of human resources of Yunnan mining enterprises: concept is comparatively backward, human resources management system is not complete, salary incentive system is not reasonable and human resources management is not in place and so on. It analysis and evaluates several aspects of the problem of the human resources management of mining enterprise of Yunnan province. It developed human resources management countermeasures: the mining enterprises should change the traditional concept of human resources, establish a harmonious enterprise culture. Enhance the cohesive affinity of the enterprise. The enterprise and school should carry out multi-level and multi-angle cooperation to ensure the construction of labor pool. Establishing an appropriate compensation and incentive systems, and improving the logistics level.

Abstract: Nutrition components of bamboo shoots sampled from 6 large-sized and shoots-based bamboo species in Yunnan were analyzed in this paper. The results showed that bamboo shoots were naturally green food with merits of high protein, fiber, ash content, low sugar and low fat, however with defects of sulfur-containing amino acid and calcium deficiency, consisting of essential amino acid such as aspartic acid, phenylalanine, tryptophan and lysine, also including other important microelements as iron, zinc and manganese, and vitamin E.

Abstract: It is very important that assess the number of casualties, the losses of economy and building after the earthquake and in the absence of field investigations. The work of assessment is very significant to earthquake emergency rescue decisions. Because of this requirement, this paper design and develop an earthquake rapid assessment system which based on GIS technology. We can get earthquake disaster loss result which integrating maps, table and text by fusing the spatial data and attribute data in the GIS support in short time. This result can help us to compute the beginning levels of earthquake emergency response, which is an important auxiliary decision support supports.

Abstract: The situation and characteristics of the changes of cultivated land, food production and population in the process of urbanization in yunnan province nearly a decade are reviewed in this paper. Through the analysis and research of cultivated land area change rate and grain yield rate and rate of urbanization. Discusses the relations between and among population, cultivated land and grain production, Put forward some countermeasures and Suggestions.

Abstract: It was investigated and analyzed about the species composition of phytoplankton, and their relations to environmental factors sampled in spring, summer and autumn in 2001-2011 in Fuxian Lake (24o 21'~24o 38' N, 102o 49'12 "~102o 57'26"E). The phytoplankton from Fuxian lake included 78 species belong to 41 genera 25 family, 7 phyla. Chlorophyta was predominant, with consisted of 43.5% of total species number. Species number of phytoplankton appeared visible monthly variation. The main predominant phytoplankton species was Mougeotia bloodlei, which accounted for 42.94%~84.94% of total cell density of phytoplankton. The community structures of phytoplankton were consist of Mougeotia bloodlei, Chroococcus spp., Cyclotella spp., Ceratium hirundinella and Dinobryon sertularia.

Abstract: This paper analyzes the fluid inclusions, micro-thermometry, the pressure, salinity and pH of ore-forming solution, and isotopes of H and O, C and O of the Dahongshan copper deposit in Yunnan Province. The result shows that these inclusions are dominated by liquids (L_H2O), gases and liquids (L_H2O+V_H2O), and daughter mineral-bearing (L_H2O+V_H2O+S_NaCl) three-phase ones and the liquid inclusion accounts for about 50%, and the liquid composition mainly include Na⁺,K⁺,F^-,Cl^-. Homogenization temperatures at the early stage vary from 290°C to 330°C, with the peak value around 350°C, while at the late stage the figures vary from 160°C to 250°C, with the peak value 250°C. The general salinity ranges from 16.0 wt% to 35.9wt%, and the maximum reaches 45wt%. The value of δ¹⁸O_H2O and δD in the mineral inclusion ranges from-1.15% to 6.61% and from-58% to-78% respectively. These isotopic data imply that the ore-forming fluids were mainly derived from the magmatic water, the metamorphic water and the meteoric water.

Abstract: Geza island arc located in the southwest Sanjiang tectonic igneous rock belts, it was a products of Ganzi-Litang oceanic crust diving to Zhongdian Landmasses in late Triassic and a important of newly discovered copper polymetallic belts in the recent years in China. The regional strong tectonic-magmatic activity throughout the island-arc orogenesis from beginning to the end, the rich mineralization developed in the different times and different circumstances. Based on the development stage of island arc orogenic,the distribution of intrusive rocks, rocks composition, geochemical characteristics, Geza island arc granit belt can be divided into three belts. Lithogeochemical characteristics show that the porphyry (porphyrite) and island-arc granite rocks have the same rock series (high-K calc-alkaline) and the same genetic type (I-type granite); these rocks trace elements very similar to granite of island arc, which enriched in Ba, La, Hf, Au,chalcophile elements Cu,Pb, siderophile elements Mo, Ni, and depleted in Rb, Nb, P, Ti.