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Gold Deposition by Boiling or Cooling Without Boiling: Genesis ofthe Sangchon Gold Deposits,Hadong Area, south korea

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Global Geology 2001年第2期6卷 139-150页

作者： Maeng-Eon PARK, Kyu-Youl SUNG (Department of Environmental Geosciences, Pukyong national university, Pusan 608-737, korea) Seong-Taek YUN (Department of Earth and Environmental Sciences, korea university, Seoul 136-701, R.korea) Department of Environmental Geosciences Pukyong National University Pusan 608 - 737 Korea Department of Earth and Environmental Sciences Korea University Seoul 136 - 701 R . Korea

In order to understand the mechanism(s) of gold precipitation in the anorthosite-hosted Sangchon gold deposits in the Hadong area, korea, chemical speciation and reaction path calculations were accomplished by geochemical modeling. The modeling consisted of three-step procedures: reaction with anorthosite, then the simple cooling of the reacted fluid, and finally the boiling of metalliferous fluid. The principal vein minerals of the Sangchon deposits consist of quartz, sericite, kaolinite, pyrite, galena, chalcopyrite, sphalerite and acanthite. The sulfide mineralization is typically zoned from pyrite (preferentially at vein margins) to galena and sphalerite (toward vein center). Electrum is intimately associated with pyrite ± chalcopyrite and sphalerite. By comparing the results of modeling with the observed mineral assemblages and paragenesis, the most appropriate evolution path of ore fluids was suggested as follow: reaction of a single fluid with anorthosite at 300℃, then the isobaric cooling of the fluid at temperatures from 250° to 100℃, and then the boiling and cooling of the fluid due to the decrease of pressure and temperature. Calculations also show that all of the observed alteration minerals formed due to fluid-anorthosite interaction at early period, whereas most of sulfides and electrum were precipitated mainly due to cooling. The abundance of gold in veins depends critically on the ratio of total base metals plus iron to sulfide in the aqueous phase, because gold is transported as Au(HS) 2 -whose solubility is very sensitive to the sulfide activity. Our results of geochemical modeling generally fit to the observed mineral assemblages and mineral composition, indicating the usefulness of numerical simulation for elucidating the genesis of gold deposits.

关键词： Sangchon gold deposits, cooling, boiling, genesis, Hadong area

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血管内皮细胞生长因子和血管发生素-1及其受体在斑马鱼早期胚胎发育过程中的表达

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时珍国医国药 2006年第6期17卷 912-913页

作者：柳明洙张学武高圭永金善姬延边大学基础医学院韩国科学技术大学韩国全北大学校医科大学南开大学吉林延吉133000 韩国大田305-701 韩国全州560-180 天津300071

目的探讨血管内皮细胞生长因子和血管发生素-1及其受体在斑马鱼早期胚胎发育过程中的表达,为构建药物筛选的在体模型提供依据。方法采用多聚酶链式反应,扩增了长约280bp的斑马鱼血管发生素-1 cDNA部分序列,作为探针,以原位杂交法测定了... 详细信息

目的探讨血管内皮细胞生长因子和血管发生素-1及其受体在斑马鱼早期胚胎发育过程中的表达,为构建药物筛选的在体模型提供依据。方法采用多聚酶链式反应,扩增了长约280bp的斑马鱼血管发生素-1 cDNA部分序列,作为探针,以原位杂交法测定了血管内皮细胞生长因子和血管发生素-1及其相应受体flk-1和Tie-2的表达。结果从受精卵胚胎发育第12小时可见血管内皮细胞生长因子和血管发生素-1及其相应受体flk-1和Tie-2的表达;在受精卵胚胎发育的第16小时,血管内皮细胞生长因子和血管发生素-1主要在头部和尾部胚芽表达;第24小时在眼球、视窝、中脑、后脑的腹前侧和肌节中表达,Tie2和F lk-1主要在肌间背部动脉血管、躯干新生血管芽和轴向静脉中表达。结论血管内皮细胞生长因子和血管发生素-1及其受体在斑马鱼胚胎发育早期的血管发生过程中可能相互作用,并协调血管发生过程。斑马鱼是研究胚胎发育早期微血管发生和血管发生的极佳动物模型,可用于促血管发生或抑制血管发生药物筛选。

关键词：斑马鱼血管发生素-1 血管内皮生长因子受体

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An Adjoint Matrix of a Real Idempotent Matrix

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Journal of Mathematical Research with Applications 1997年第3期 18-22页

作者： Jin Bai Kim (Dept. of Math., West Virginia university Morgantown, WV 26506, USA) Hee Sik Kim (Dept. of Math. Education Chungbuk national university, Chongju 360 763, korea) Seung Dong Kim (Dept. of Math., Kong Ju national Teachers’ university, Ko

ＡｎＡｄｊｏｉｎｔＭａｔｒｉｘｏｆａＲｅａｌＩｄｅｍｐｏｔｅｎｔＭａｔｒｉｘＪｉｎＢａｉＫｉｍ（Ｄｅｐｔ．ｏｆＭａｔｈ．，ＷｅｓｔＶｉｒｇｉｎｉａＵｎｉｖｅｒｓｉｔｙＭｏｒｇａｎｔｏｗｎ，ＷＶ２６５０６，ＵＳＡ）Ｈｅ... 详细信息

ＡｎＡｄｊｏｉｎｔＭａｔｒｉｘｏｆａＲｅａｌＩｄｅｍｐｏｔｅｎｔＭａｔｒｉｘＪｉｎＢａｉＫｉｍ（Ｄｅｐｔ．ｏｆＭａｔｈ．，ＷｅｓｔＶｉｒｇｉｎｉａＵｎｉｖｅｒｓｉｔｙＭｏｒｇａｎｔｏｗｎ，ＷＶ２６５０６，ＵＳＡ）ＨｅｅＳｉｋＫｉｍ（Ｄｅｐｔ．ｏｆＭａ...

关键词： idempotent matrices.

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THE FUNDAMENTAL GROUP OF THE AUTOMORPHISM GROUP OF A NONCOMMUTATIVE TORUS THE FUNDAMENTAL GROUP OF THE AUTOMORPHISM GROUP OF A NONCOMMUTATIVE TORUS

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Chinese Annals of Mathematics,Series B 2000年第4期21卷 441-452页

作者： D. H. BOO C. G. PARK Department of Mathematics Chungnam National University TaeJon 305-764 Korea

Assume that each completely irrational noncommutative torus is realized as an inductive limit of circle algebras, and that for a completely irrational noncommutative torus Aω of rank m there are a completely irrational noncommutative torus Aρ of rank m and a positive integer d such that tr（Aω） = tr（Aρ）. It is proved that the set of all C*-algebras of sections of locally trivial C*-algebra bundles over S2 with fibres Aω. has a group structure, denoted by π1（Aut（Aω.））, which is isomorphic to Z if d > 1 and {0} if d > 1. Let Bcd be a cd-homogeneous C*-algebra over S2 x T2 of which no non-trivial matrix algebra can be factored out. The spherical noncommutative torns Sρcd is defined by twisting C*（T2 x Zm-2） in Bcd C* （Z（m-2）） by a totally skew multiplier ρ on T2 x Z（m-2）. It is shown that Sρcd Mp∞ is isomorphic to C（S2） C* （T2 x Zm-2, ρ） Mcd（C） Mp∞ if and only if the set of prime factors of cd is a subset of the set of prime factors of p.

关键词： C*-algebra bundle Homogeneous C*-algebra Crossed product UHF-algebra Cuntz algebra

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Diffusion tensor imaging of neural tract injury in a patient with hypoxic-ischemic brain injury

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Neural Regeneration Research 2010年第23期5卷 1825-1828页

作者： Ji Heon Hong,Sung Ho Jang Department of Physical Medicine and Rehabilitation,College of Medicine,Yeungnam university,Daegu 705-717,Republic of korea Department of Physical Medicine and Rehabilitation College of MedicineYeungnam University Sung Ho Jang

Hypoxic-ischemic brain injury （HI-BI） is one of the most common causes of severe neurological disability, Some studies have reported diffusion tensor imaging （DTI） findings of neonatal patients with HI-BI. However, very little is known about DTI in the adult brain. The present study reports on a 15-year-old male patient with HI-BI, who exhibited no specific focal lesions on conventional brain MRI at 5 weeks. However, neural tract injuries were revealed by DTI. Seven control subjects were also evaluated. The patient suffered from cardiac arrest due to ventricular fibrillation for a period of 10 15 minutes. At 4 weeks after onset of cardiac arrest, although he was conscious and alert, he exhibited mild quadriparesis and severe cognitive dysfunction. DTI was acquired at 5 weeks after HI-BI onset. Decreased fractional anisotropy or voxel number of neural tracts suggested partial injury of the corticospinal tract, fornix, and cingulum. Disruptions of the fornix and cingulum on DTI confirmed neural tract injury. DTI could serve as a useful tool for evaluating the state of neural tracts in patients with HI-BI.

关键词： hypoxic-ischemic brain injury diffusion tensor imaging hemiparesis corticospinal tract

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The Physical Nature of H_2CO Clouds in Dark Clouds, B5 and L1535

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天文研究与技术 1999年第S1期 250-254页

作者： Y.K. Minn 1, Y.B.Lee 2 1 (Kyung Hee university, Yong in 499-701, korea) 2 (Seoul national university of Education, Seoul 137-742, korea)

By fitting the data of the H 2CO 2 mm (140 GHz and 150 GHz), 2cm (1 45GHz) and, 6 cm (4 3GHz) lines we observed in the dark clouds, B5 and L1535, to the values calculated by the hydrostatic equitlibrium polytropic model developed by B.E. Turner, we derived the total density, the fractional abundance of H 2CO, the column densities of H 2 and CO, the line temperature arising from various transitions, the line temperature ratio between different transitions, and visual extinction at the cores of the clouds. We also examined the effect of external UV field intensity on the line temperatures and their ratios.

关键词： Nature CO The Physical Nature of H2CO Clouds in B5 and L1535 Dark Clouds

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Asynchronous cooperative communication systems:A survey on signal designs

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Science China(Information Sciences) 2011年第8期54卷 1547-1561页

作者： WANG HuiMing 1,2 & XIA XiangGen 3 1 School of Electronic and Information Engineering, Xi’an Jiaotong university, Xi’an 710049,China 2 State Key Laboratory of Integrated Services Networks, Xidian university,Xi’an 710049, China 3 Department of Electrical and Computer Engineering,university of Delaware,Newark,DE 19716,USA School of Electronic and Information Engineering Xi’an Jiaotong University Xi’an China State Key Laboratory of Integrated Services Networks Xidian University Xi’an China Department of Electrical and Computer Engineering University of Delaware Newark USA

Cooperative communications is a promising technique for future high speed wireless *** systems may be formulated as virtual multi-input multi-output (MIMO) systems where spatial/cooperetive diversity is a key advantage. However,different from MIMO systems,one of the major chal- lenges for cooperative communications systems is that the cooperative transmissions in cooperative systems may be neither time nor frequency synchronized,since the transmissions are from multiple cooperative nodes at different *** existing signal designs for co-located MIMO systems may not be able to collect the cooperative diversity in cooperative communications *** paper gives an overview of recent research efforts on combating the time and frequency asynchronism of the cooperative communication *** focus on the signal designs (or space-time codings/modulations) to achieve full cooperative diversity,and summarize some of the resent distributed space-timing coding and space-frequency coding techniques to combat timing errors and frequency offsets,and in the meantime to achieve full cooperative diversity,in both one-way and two-way cooperative networks.

关键词： cooperative communications time and frequency offsets space-time coding space-frequency codes full cooperative diversity linear receiver

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Influence of Lactobacillus E1 on the Storage Stability in Emulsion Immobilization

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Journal of Wuhan university of Technology(Materials Science) 2009年第1期24卷 75-80页

作者：孙欣陈西广 College of Life Science Ocean University of China

A coacervation method with double emulsion strategy （w/o/w） was used to prepare immobilized Lactobacillus E1. Diatomite was chosen as the carrier for bacteria. Sodium alginate, dextrin and gelatin were used as protective solutes for the preservation of Lactobacillus E1 and their effects on the storage viability during storage were discussed. The influence of storage temperature on the storage viability was also examined. The results show that high bacteria viable count over 109 cfu/g for an extended shelf life of 37 d can be achieved with 2% sodium alginate, 5% dextrin and 4% gelatin as protective solutes, at 10 ℃ of the storage temperature. This immobilized Lactobacillus E1 has potential use as functional food ingredient for both human dairy food and animal feedstuff.

关键词： lactobacillus microencapsulation storage viability protective solute shelf life

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悖论的现代性与对新公有制社会选择的探求

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吉林大学社会科学学报 2005年第6期45卷 57-64页

作者：韩相震国立汉城大学社会学学科

悖论的现代性主要体现在民族国家、工人运动、官僚管理、科技、代议制民主、家庭、社会关系、功能差异性以及个人主义等都受到了严重的挑战和质疑。为了在东方传统与西方现代性之间构建起一种平衡,解决现代性所产生的问题,应走参与型公... 详细信息

悖论的现代性主要体现在民族国家、工人运动、官僚管理、科技、代议制民主、家庭、社会关系、功能差异性以及个人主义等都受到了严重的挑战和质疑。为了在东方传统与西方现代性之间构建起一种平衡,解决现代性所产生的问题,应走参与型公有制社会的道路,它既不以市场也不以国家为中心,而是以市民社会和参与运动为中心的独特的“新公有制社会”。新公有制社会的文化基础包括:涉及参与型社会力量的代理团体,涉及交流技术领域的互联网发展以及涉及社会规范的后传统再检验。在韩国,这些社会文化基础正在形成。

关键词：悖论的现代性新公有制社会市民社会公有制社会现代性社会选择悖论社会文化基础探求民族国家

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明中期福建的新县设置及宗族发展

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中国社会历史评论 2009年第1期 1-30页

作者：元廷植韩国国立江原大学校

本文旨在以设新县为主研究明朝如何实际利用宗族试行"小政府"政策以及宗族的响应。研究结论如下:首先,明中期福建及周边地区的社会经济变革和问题集中在平和与宁阳等人口稀少的落后地区。中央政府试图以宗族为首确保地区太平。而宗族也... 详细信息

本文旨在以设新县为主研究明朝如何实际利用宗族试行"小政府"政策以及宗族的响应。研究结论如下:首先,明中期福建及周边地区的社会经济变革和问题集中在平和与宁阳等人口稀少的落后地区。中央政府试图以宗族为首确保地区太平。而宗族也想借国家之力巩固自家地盘。于是,新县得以设置。其次,宗族为设新县提供了大量人力财力。中央政府也为该地区设新县提供了各种资源。新县初设时地方宗族和中央政府之间的密切配合一直保留下来。双方合力修建和维护城墙和县府。由于设新县就是为了地方太平,所以宗族在地方政府中地位显赫。第三,参与新县设置和管理也加强了宗族内部团结。例如,曾敦立在1519年平和设县4年后的1523年首编族谱。30年后曾氏宗族再次修谱时许多周边地区同宗人士入谱。宗族建宗祠、修祖坟、设机构、救济本族贫民。1566年宁洋设县22年后的1588年曹文烨初修曹氏族谱,也表明设新县与宗族发展密切相关。

关键词：新县宗族社会曾氏宗族曹氏宗族

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