China Daily of Beijing, China
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Lithofacies Palaeogeography of the Late Permian Wujiaping Age in the Middle and Upper Yangtze Region, China
Journal of Palaeogeography 2014, 3(4): 384-409 DOI: 10.3724/SP.J.1261.2014.00063 Lithofacies palaeogeography and sedimentology Lithofacies palaeogeography of the Late Permian Wujiaping Age in the Middle and Upper Yangtze Region, China Jin-Xiong Luo*, You-Bin He, Rui Wang School of Geosciences, Yangtze University, Wuhan 430100, China Abstract The lithofacies palaeogeography of the Late Permian Wujiaping Age in Middle and Upper Yangtze Region was studied based on petrography and the “single factor analysis and multifactor comprehensive mapping” method. The Upper Permian Wujiaping Stage in the Middle and Upper Yangtze Region is mainly composed of carbonate rocks and clastic rocks, with lesser amounts of siliceous rocks, pyroclastic rocks, volcanic rocks and coal. The rocks can be divided into three types, including clastic rock, clastic rock-limestone and lime- stone-siliceous rock, and four fundamental ecological types and four fossil assemblages are recognized in the Wujiaping Stage. Based on a petrological and palaeoecological study, six single factors were selected, namely, thickness (m), content (%) of marine rocks, content (%) of shallow water carbonate rocks, content (%) of biograins with limemud, content (%) of thin- bedded siliceous rocks and content (%) of deep water sedimentary rocks. Six single factors maps of the Wujiaping Stage and one lithofacies palaeogeography map of the Wujiaping Age were composed. Palaeogeographic units from west to east include an eroded area, an alluvial plain, a clastic rock platform, a carbonate rock platform where biocrowds developed, a slope and a basin. In addition, a clastic rock platform exists in the southeast of the study area. Hydro- carbon source rock and reservoir conditions were preliminarily analyzed based on lithofacies palaeogeography. -
Uranium Enrichment in a Paleo-Karstic Bauxite Deposit, Yunfeng, SW China Mineralogy, Geochemistry, Transport
Journal of Geochemical Exploration 190 (2018) 424–435 Contents lists available at ScienceDirect Journal of Geochemical Exploration journal homepage: www.elsevier.com/locate/gexplo Uranium enrichment in a paleo-karstic bauxite deposit, Yunfeng, SW China: T Mineralogy, geochemistry, transport – deposition mechanisms and significance for uranium exploration ⁎ Yongzhen Longa,b, Guoxiang Chic, , Jianping Liua,b, Dexian Zhanga,b, Hao Songc,d a Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha 410083, China b School of Geosciences and Info-Physics, Central South University, Changsha 410083, China c Department of Geology, University of Regina, Saskatchewan, S4S 0A2, Canada d Chengdu University of Technology, Chengdu, 610059, China ARTICLE INFO ABSTRACT Keywords: Elevated concentrations of uranium have been found in many bauxite deposits, but the status of uranium in the Paleo-karstic ores and the mechanisms of enrichment have not been well understood. In this paper, we report a new case of Bauxite deposit uranium enrichment in a paleo-karstic bauxite deposit at Yunfeng, southwestern China, present electron probe Uranium minerals micro-analyzer (EPMA) and Raman spectroscopic evidence for the presence of separate U-minerals, and propose EPMA a model in which uranium was enriched through successive processes from chemical weathering through early Raman spectroscopy to burial diagenesis. The Yunfeng bauxite ores, developed in Lower Carboniferous mudrocks overlying Middle to Yunfeng Guizhou Upper Cambrian carbonate rocks, contain 18.0 to 62.4 ppm (average 35.1 ppm) U, which is much high than the abundances in average crustal rocks (1–3 ppm). Micron-sized uraninite occurs as rims of Ti-oxides, fillings of micro-fractures in kaolinite, and disseminated grains in association with sulfides in the matrix of diaspore and kaolinite. -
ISO 639-3 New Code Request
ISO 639-3 Registration Authority Request for New Language Code Element in ISO 639-3 This form is to be used in conjunction with a “Request for Change to ISO 639-3 Language Code” form Date: 2007-8-27 Name of Primary Requester: Conrad Hurd E-mail address: [email protected] Names, affiliations and email addresses of additional supporters of this request: Associated Change request number : 2007-188 (completed by Registration Authority) Tentative assignment of new identifier : hrm (completed by Registration Authority) PLEASE NOTE: This completed form will become part of the public record of this change request and the history of the ISO 639-3 code set. Use Shift-Enter to insert a new line in a form field (where allowed). 1. NAMES and IDENTIFICATION a) Preferred name of language for code element denotation: Horned Miao b) Autonym (self-name) for this language: possibly Hmo or A-Hmo (personal communication from a Chinese Miao scholar, 24 August 2007); Hmongb Khuat Shuad Ndrangl--this applies only to one sub-group (unpublished paper, Johnson 1998, "Farwestern Hmongic," p. 13) c) Common alternate names and spellings of language, and any established abbreviations: The Horned Miao are also called Hmo or A-Hmo (personal communication from a Chinese Miao scholar, 24 August 2007), Jiao Miao, Jiaojiao Miao, Kha-Nzi, Hmong Khua Shua Ndrang, Hmong Sou, Bai Miao, and White Miao (Hattaway 2000, p. 215). d) Reason for preferred name: The people who speak the “Horned Miao” lect are best known for the large horn-shaped wooden combs around which the women who speak this language wrap their hair. -
A Qualitative and Comprehensive Analysis of Caries Susceptibility for Dental Fluorosis Patients
antibiotics Review A Qualitative and Comprehensive Analysis of Caries Susceptibility for Dental Fluorosis Patients Qianrui Li 1 , Jiaqi Shen 1, Tao Qin 1, Ge Zhou 1, Yifeng Li 1, Zhu Chen 2 and Mingyun Li 1,* 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China; [email protected] (Q.L.); [email protected] (J.S.); [email protected] (T.Q.); [email protected] (G.Z.); [email protected] (Y.L.) 2 Key Laboratory of Oral Disease Research, School of Stomatology, Zunyi Medical University, Zunyi 563000, China; [email protected] * Correspondence: [email protected] Abstract: Dental fluorosis (DF) is an endemic disease caused by excessive fluoride exposure during childhood. Previous studies mainly focused on the acid resistance of fluorotic enamel and failed to reach a consensus on the topic of the caries susceptibility of DF patients. In this review, we discuss the role of DF classification in assessing this susceptibility and follow the “four factors theory” in weighing the pros and cons of DF classification in terms of host factor (dental enamel and saliva), food factor, bacteria factor, and DF treatment factor. From our analysis, we find that susceptibility is possibly determined by various factors such as the extent of structural and chemical changes in fluorotic enamel, eating habits, fluoride levels in diets and in the oral cavity, changes in quantity and quality of saliva, and/or oral hygiene. Thus, a universal conclusion regarding caries susceptibility might not exist, instead depending on each individual’s situation. -
Chinacoalchem
ChinaCoalChem Monthly Report Issue May. 2019 Copyright 2019 All Rights Reserved. ChinaCoalChem Issue May. 2019 Table of Contents Insight China ................................................................................................................... 4 To analyze the competitive advantages of various material routes for fuel ethanol from six dimensions .............................................................................................................. 4 Could fuel ethanol meet the demand of 10MT in 2020? 6MTA total capacity is closely promoted ....................................................................................................................... 6 Development of China's polybutene industry ............................................................... 7 Policies & Markets ......................................................................................................... 9 Comprehensive Analysis of the Latest Policy Trends in Fuel Ethanol and Ethanol Gasoline ........................................................................................................................ 9 Companies & Projects ................................................................................................... 9 Baofeng Energy Succeeded in SEC A-Stock Listing ................................................... 9 BG Ordos Started Field Construction of 4bnm3/a SNG Project ................................ 10 Datang Duolun Project Created New Monthly Methanol Output Record in Apr ........ 10 Danhua to Acquire & -
Application of AHP Method and TOPSIS Method in Comprehensive Economic Strength Evaluation of Major Cities in Guizhou Province
2017 International Conference on Computer Science and Application Engineering (CSAE 2017) ISBN: 978-1-60595-505-6 Application of AHP Method and TOPSIS Method in Comprehensive Economic Strength Evaluation of Major Cities in Guizhou Province Liang Zhou*, Changdi Shi and Liming Luo Information Engineering College, Capital Normal University, 100048 Beijing, China ABSTRACT This paper establishes the comprehensive economic strength evaluation system of major cities in Guizhou province, and puts forward the evaluation model of comprehensive economic strength of major cities in Guizhou province based on the AHP method and the TOPSIS method. The AHP method was used to determine the weight of evaluation indicator. The TOPSIS method is used to calculate the positive and negative ideal solutions, analyses the case, and then the final ranking of the comprehensive economic strength of the major cities in Guizhou province. The result shows that the final ranking, from high to low, of comprehensive economic strength of the major cities in Guizhou province is: Guiyang, Zunyi, Liupanshui, Tongren and Anshun. The evaluation system of the comprehensive economic strength indicator of the major cities in Guizhou province has a certain practicability, which provides an evaluation basis in comprehensive economic strength for the major cities in Guizhou province. INTRODUCTION In recent years, with the establishment of large data centers and the promulgation of precision poverty alleviation policies, the national economy and social development of the major cities in Guizhou have made breakthrough progress, but the cities developed unevenly, so it is necessary to explore how to establish a good and scientific comprehensive economic evaluation system. This paper is focused on evaluating the comprehensive economic strength of major cities in Guizhou province effectively. -
Volume 90 Number 4 2003 Annals of the Missouri Botanical Garden
Volume 90 Annals Number 4 of the 2003 Missouri Botanical Garden A REVISION OF THE Yelin Huang,2 Peter W. Fritsch,3 and 2 IMBRICATE GROUP OF Suhua Shi STYRAX SERIES CYRTA (STYRACACEAE) IN ASIA1 ABSTRACT Several taxonomic treatments of Styrax (Styracaceae) exist in regional ¯oras of Asia, but the Asian species of the genus have not been comprehensively revised since 1907. To help rectify this, we conducted a taxonomic revision of the Asian species of Styrax series Cyrta with imbricate corolla aestivation. Our revision comprises 17 species with a combined distribution from Japan south to Sumatra and west to Nepal. The circumscriptions of the heretofore poorly de®ned species S. hookeri and S. serrulatus are clari®ed. Styrax agrestis var. curvirostratus is elevated to the species level, and lectotypes are selected for S. duclouxii, S. ¯oribundus, S. hemsleyanus, S. hookeri, S. hookeri var. yunnanensis, S. hypoglaucus, S. japonicus, S. limprichtii, S. macranthus, S. obassia, S. perkinsiae, S. serrulatus var. latifolius, S. shiraianus, S. supaii, and S. wilsonii. Keys, descriptions, and distribution maps are provided for all species. Key words: eastern Asia, Styracaceae, Styrax, Styrax series Cyrta. Styrax L. comprises about 130 species of trees ern Argentina and Uruguay (Fritsch, 1999, 2001). and shrubs distributed in eastern and southeastern Styrax is by far the largest and most widespread of Asia, the New World, and the Mediterranean region the 11 genera in the Styracaceae sensu Fritsch et (Fritsch, 1999). The range of this genus is typical al. (2001) and Fritsch (in press a). Characters of many plant groups distributed among the refugia unique to Styrax in relation to the family include a of Tertiary mixed-mesophytic forests in the North- stamen tube attached high (vs. -
Loan Agreement
OFFICIAL DOCUMENTS Public Disclosure Authorized LOAN NUMBER 8927-CN Loan Agreement Public Disclosure Authorized (Guizhou Aged Care System Development Program) between PEOPLE'S REPUBLIC OF CHINA and Public Disclosure Authorized INTERNATIONAL BANK FOR RECONSTRUCTION AND DEVELOPMENT Public Disclosure Authorized LOAN AGREEMENT AGREEMENT dated as of the Signature Date between PEOPLE'S REPUBLIC OF CHINA ("Borrower") and INTERNATIONAL BANK FOR RECONSTRUCTION AND DEVELOPMENT ("Bank"). The Borrower and the Bank hereby agree as follows: ARTICLE I - GENERAL CONDITIONS; DEFINITIONS 1.01. The General Conditions (as defined in the Appendix to this Agreement) apply to and form part of this Agreement. 1.02. Unless the context requires otherwise, the capitalized terms used in this Agreement have the meanings ascribed to them in the General Conditions or in the Appendix to this Agreement. ARTICLE II- LOAN 2.01. The Bank agrees to lend to the Borrower the amount of three hundred five million seven hundred thousand Euro (E305,700,000), as such amount may be converted from time to time through a Currency Conversion ("Loan"), to assist in financing the program described in Schedule 1 to this Agreement ("Program"). 2.02. The Borrower may withdraw the proceeds of the Loan in accordance with Section IV of Schedule 2 to this Agreement. All withdrawals from the Loan Account shall be deposited by the Bank into an account specified by the Borrower and acceptable to the Bank. 2.03. The Front-end Fee is one quarter of one percent (0.25%) of the Loan amount. 2.04. The Commitment Charge is one quarter of one percent (0.25%) per annum on the Unwithdrawn Loan Balance. -
Information to Users
INFORMATION TO USERS This manuscript Pas been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissenation copies are in typewriter face, while others may be from anytype of computer printer. The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely. event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material bad to beremoved, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from left to right in equal sections with smalloverlaps. Each original is also photographed in one exposure and is included in reduced form at the back ofthe book. Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. UMI A Bell &Howell Information Company 300North Zeeb Road. Ann Arbor. MI48106-1346 USA 313!761-47oo 800:521·0600 THE LIN BIAO INCIDENT: A STUDY OF EXTRA-INSTITUTIONAL FACTORS IN THE CULTURAL REVOLUTION A DISSERTATION SUBMITTED TO THE GRADUATE DIVISION OF THE UNIVERSITY OF HAWAII IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN HISTORY AUGUST 1995 By Qiu Jin Dissertation Committee: Stephen Uhalley, Jr., Chairperson Harry Lamley Sharon Minichiello John Stephan Roger Ames UMI Number: 9604163 OMI Microform 9604163 Copyright 1995, by OMI Company. -
Trace and Rare Earth Elements Constraints on the Sources of the Yunfeng Paleo-Karstic Bauxite Deposit in the Xiuwen-Qingzhen
Ore Geology Reviews 91 (2017) 404–418 Contents lists available at ScienceDirect Ore Geology Reviews journal homepage: www.elsevier.com/locate/oregeorev Trace and rare earth elements constraints on the sources of the Yunfeng T paleo-karstic bauxite deposit in the Xiuwen-Qingzhen area, Guizhou, China ⁎ Yongzhen Longa,b, , Guoxiang Chic, Jianping Liua,b, Zhongguo Jind, Tangen Daia,b a Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha 410083, China b School of Geosciences and Info-Physics, Central South University, Changsha 410083, China c Department of Geology, University of Regina, Saskatchewan S4S 0A2, Canada d Non-Ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Guiyang 550005, China ARTICLE INFO ABSTRACT Keywords: A number of Carboniferous paleo-karstic bauxite deposits occur in the Xiuwen-Qingzhen area, central Guizhou Paleo-karstic Province, which constitute an important part of the central Guizhou-Southern Chongqing bauxite belt in Bauxite deposit southwestern China. These deposits consist of lenticular and stratiform orebodies hosted in the Lower Provenance Carboniferous Jiujialu Formation, which lies unconformably above carbonate rocks (mainly dolomite) of the Uranium Middle and Upper Cambrian Loushanguan Group, Shilengshui Formation and Lower Cambrian Qingxudong Yunfeng Formation. Although it is generally agreed that the bauxite resulted from weathering of Cambrian rocks below Guizhou the unconformity, -
Mercury Accumulation in Vegetable Houttuynia Cordata Thunb. from Two
www.nature.com/scientificreports OPEN Mercury accumulation in vegetable Houttuynia cordata Thunb. from two diferent geological areas in southwest China and implications for human consumption Qingfeng Wang1,2*, Zhonggen Li1,2, Xinbin Feng2, Ao Wang4, Xinyu Li2,3, Dan Wang1 & Leilei Fan1 Houttuynia cordata Thunb. (HCT) is a common vegetable native to southwest China, and grown for consumption. The results suggested that THg contents in all parts and MeHg in underground parts of HCT in Hg mining areas were much higher than those in non-Hg mining areas. The highest THg and MeHg content of HCT were found in the roots, followed by the other tissues in the sequence: roots > leaves > rhizomes > aboveground stems (THg), and roots > rhizomes > aboveground stems > leaves (MeHg). The average THg bioaccumulation factor (BCF) of HCT root in the Hg mining area and in non-Hg mining areas could reach 1.02 ± 0.71 and 0.99 ± 0.71 respectively, indicating that HCT is a Hg accumulator. And the THg and MeHg contents in all tissues of HCT, including the leaves, were signifcantly correlated with THg and MeHg content in the soil. Additionally, preferred dietary habits of HCT consumption could directly afect the Hg exposure risk. Consuming the aboveground parts (CAP) of HCT potentially poses a high THg exposure risk and consuming the underground parts (CUP) may lead to a relatively high MeHg exposure risk. Only consuming the rhizomes (OCR) of the underground parts could signifcantly reduce the exposure risk of THg and to some extent of MeHg. In summary, HCT should not be cultivated near the Hg contaminated sites, such as Hg tailings, as it is associated with a greater risk of Hg exposure and high root Hg levels, and the roots should be removed before consumption to reduce the Hg risk. -
Exceptional Vertebrate Biotas from the Triassic of China, and the Expansion of Marine Ecosystems After the Permo-Triassic Mass Extinction
Earth-Science Reviews 125 (2013) 199–243 Contents lists available at ScienceDirect Earth-Science Reviews journal homepage: www.elsevier.com/locate/earscirev Exceptional vertebrate biotas from the Triassic of China, and the expansion of marine ecosystems after the Permo-Triassic mass extinction Michael J. Benton a,⁎, Qiyue Zhang b, Shixue Hu b, Zhong-Qiang Chen c, Wen Wen b, Jun Liu b, Jinyuan Huang b, Changyong Zhou b, Tao Xie b, Jinnan Tong c, Brian Choo d a School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK b Chengdu Center of China Geological Survey, Chengdu 610081, China c State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China d Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China article info abstract Article history: The Triassic was a time of turmoil, as life recovered from the most devastating of all mass extinctions, the Received 11 February 2013 Permo-Triassic event 252 million years ago. The Triassic marine rock succession of southwest China provides Accepted 31 May 2013 unique documentation of the recovery of marine life through a series of well dated, exceptionally preserved Available online 20 June 2013 fossil assemblages in the Daye, Guanling, Zhuganpo, and Xiaowa formations. New work shows the richness of the faunas of fishes and reptiles, and that recovery of vertebrate faunas was delayed by harsh environmental Keywords: conditions and then occurred rapidly in the Anisian. The key faunas of fishes and reptiles come from a limited Triassic Recovery area in eastern Yunnan and western Guizhou provinces, and these may be dated relative to shared strati- Reptile graphic units, and their palaeoenvironments reconstructed.