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Environmental assessment and nano-mineralogical characterization of coal,overburden and sediment from Indian coal mining acid drainage

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地学前缘：英文版 2017年第6期8卷 1285-1297页

作者： Madhulika Dutta Jyotilima Saikia Silvio R.Taffarel Frans B.Waanders Diego de Medeiros Cesar M.N.L.Cutruneo Luis F.O.Silva Binoy K.Saikia Department of Chemistry CNB CollegeBokakhat785612AssamIndia Polymer Petroleum and Coal Chemistry Group Materials Science and Technology DivisionCSIR-North East Institute of Science&TechnologyJorhat785006India School of Applied Sciences Department of ChemistryUniversity of Science&TechnologyMeghalayaIndia Academy of Scientific Innovative Research CSIR-NEIST CampusJorhat785006India Laboratory of Environmental Researches and Nanotechnology Development Centro Universitario La SalleMestrado em Avaliacao de Impactos Ambientais em MineracaoVictor Barreto2288 Centro92010-000CanoasRSBrazil School of Chemical and Minerals Engineering North West University(Potchefstroom Campus)Potchefstroom2531South Africa Research Group in Environmental Management and Sustainability Faculty of Environmental SciencesUniversidad De La CostaCalle 58#55-66080002BarranquillaAtla nticoColombia Universidade do Vale do Rio dos Sinos.Av.Unisinos 950 Cristo Rei 90510030Sao LeopoldoRSBrazil

The deterioration of environmental conditions is the major contributory factor to poor health and quality of life that hinders sustainable development in any *** mining is one of the major industries that contribute to the economy of a country but it also impacts the *** chemical parameters of the coal,overburden,soil and sediments along with the coal mine drainage(CMD)were investigated in order to understand the overall environmental impact from high sulphur coal mining at northeastern coalfield(India).It was found that the total sulphur content of the coal is noticeably high compared to the overburden(OB)and *** volatile matter of the coal is sufficiently high against the high ash content of the soil and *** water samples have a High Electrical Conductivity(EC)and high Total Dissolve Solid(TDS).Lower values of pH,indicate the dissolution of minerals present in the coal as well as other minerals in the mine rejects/*** chemical and nano-mineralogical composition of coal,soil and overburden samples was studied using a High Resolution-Transmission Electron Microscopy(HR-TEM),Energy Dispersive Spectroscopy(EDS),Selected-Area Diffraction(SAED),Field Emission-Scanning Electron Microscopy(FE-SEM)/EDS,X-ray diffraction(XRD),Fourier Transform Infrared Spectroscopy(FTIR),Raman and Ion-Chromatographic analysis,and Mossbauer *** different geochemical analysis it has been found that the mine water sample from Ledo colliery has the lowest pH value of 3.30,Tirap colliery samples have the highest electrical conductivity value of5.40 ms cm^(-1)Both Ledo and Tirap coals have total sulphur contents within the range 3-3.50%.The coal mine water from Tirap colliery(TW-15 B)has high values of Mg^(2+)(450 ppm),and Br^-(227.17 ppm).XRD analysis revealed the presence of minerals including quartz and hematite in the *** analysis of coal mine overburden(OB)indicates the presence both of pyrite and marcasite which was also

关键词： Coal mine drainage Environmental assessment Indian coal Chemical analysis Nano-mineralogy advance characterization

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Current Progress and Controversies in Prostate Cancer Management

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Chinese Medical Journal 2017年第24期130卷 2991-2995页

作者： De-Xin Dong Zhi-Gang Ji Department of Urology Chinese Academy of Medical Sciences Peking Union Medical College Hospital Beijing 100730 China

Objective：The optimal management strategy for prostate cancer （PCa） remains *** performed a systemic review of current progress and controversies regarding the diagnosis and treatment of *** Sources：We searched PubMed for recently published articles up to July 2017 using the following key words：＂prostate cancer,＂＂progress,＂＂controversy,＂＂immunotherapy,＂ and ＂prevention.＂ Study Selection：Articles were obtained and reviewed to provide a systematic review of the current progress and controversies regarding PCa ***：The value of serum prostate-specific antigen （PSA） screening remains controversial,but PSA screening is recommended to facilitate the early diagnosis of PCa in high-risk *** biopsy via the transrectal or perineal approach has both advantages and *** was a significant correlation between testosterone levels and PCa *** current research is focused on the mechanisms responsible for *** surveillance has been proposed as a management strategy for low-risk,localized PCa,but there is an urgent need for further clinical studies to establish the criteria for recommending this *** main complications of radical resection for PCa are urinary incontinence and erectile dysfunction,though three-dimensional laparoscopic and robot-assisted laparoscopic techniques have obvious advantages over radical *** is also a therapeutic option for PCa,while immunotherapies may alter the prostate tumor *** studies aim to provide guidance on effective sequential and combination *** remains an important strategy for reducing PCa morbidity and ***：The diagnosis,treatment,and prevention of PCa are complex issues,worthy of intensive *** studies are needed to improve the management of PCa.

关键词： Active Surveillance advance lmmunotherapy Prevention Prostate Cancer

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Treatment of viral hepatitis in China： better clinical research and improved practice

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Chinese Medical Journal 2009年第19期122卷 2236-2238页

作者： CHEN Jing JIA Ji-dong Department of Hepatology Beijing Friendship Hospital Capital Medical University Beijing 100050 China

Hepatitis virus infection, especially chronic infection with hepatitis B virus （HBV） and hepatitis C virus （HCV）, is a serious issue to global public health. Although the prevalence of HBsAg in the general population has been declined dramatically in China due to universal HBV vaccination in newborns, chronic hepatitis B and hepatitis C are still the main causes of cirrhosis and hepatocellular carcinoma （HCC） that are responsible for a high rate of morbidity and mortality.1＇2 HBV- and HCV-related end-stage liver disease are also the leading indications of liver transplantation in China.

关键词： viral hepatitis therapeutics China advance

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The Development of Modern Pesticides

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Chemical Research in Chinese Universities 2002年第4期18卷 481-490页

作者： Harry R.Hudson WU Jun XU Wei-liang Division of Chemistry School of Biological and Applied SciencesUniversity of North LondonLondon N78DBUK Department of Chemistry Zhejiang UniversityHangzhou 310027P.R.China

The present paper deals with agrochemicals. The low toxicities to mammals and wild lives, greater selectivity against target organisms, and high levels of activity are particular features of many modern agrochemicals. It is suggested that integrated pest management(IPM), by means of a combination of biological and chemical controls has met with some success and the present approach is to optimize the use of chemicals rather than to eliminate them.

关键词： advance Agrochemicals Insecticides Fungicides Herbicide Biological control

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An Alternative Model For Human advancement

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Beijing Review 2023年第12期66卷 30-30页

The recently concluded First Session of the 14th National People’s Congress,China’s top legislature,and the First Session of the 14th National Committee of the Chinese People’s Political Consultative Conference,the country’s top political advisory body,offered a window into China’s model of *** Tee Keat,Chairman of the Center for New Inclusive Asia in Malaysia,shared his observations of the most important annual political meetings in China with Beijing Review reporter Ma Miaomiao.

关键词： Session Human advance

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THE RESEARCHES OF GLACIER LAKE OUTBURST FLOODS OF THE YARKANT RIVER IN XINJIANG

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Science China Chemistry 1990年第8期33卷 1014-1024,1026页

作者：张祥松李念杰由希尧王万祥 Lanzhou Institute of Glaciology & Geocryology Academia Sinica Lanzhou 730000 PRC General Hydrologic Station Water Conservancy Bureau Xinjiang Uygur Autonomous Region PRC

The Jokulhlaup of the Yarkant River (Yarkant He) is usually csused by the sudden discharge of the glacier-dammed lake and the mode of the discharge is the rapid expansion of the subglacial channel. Keyajir (Kyagar) Glacier and Telamukanli Glacier are on the upper reaches of the Keleqin (Shaksgam) River, the chief birthplaces of this kind of flood. Up to the end of this century, since the global climate has become warmer, the glaciers have accordingly shrunk and become thinner, with the result that the size and dimensions of the glacier-dammed lakes and their outburst floods have diminished. All these simply reveal the mystery of the Jokulhlaups of the Yarkant River in Xinjiang.

关键词： Yarkant River glacier lake outburst flood variation of glacier advance and retreat dewatering way of glacier lake

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AN EXPERIMENTAL STUDYOF ROTOR AERODYNAMICS IN GROUNDEFFECT AT LOW SPEEDS

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Chinese Journal of Aeronautics 1990年第2期5卷 79-87页

作者： Howard C Curtiss.Jr Princeton University Princeton University

Results of an experimental study of the aerodynamics of a helicopter rotor in ground . effect at low speeds are presented in this paper. Experiments of rotor wake flow visualization and induced velocity measurement near the rotor disc were conducted. At some advance ratio, the forward part of the rotor wake, after impinging on the ground, rolls up and recirculates near the rotor leading edge and large increase in induced velocity appears near the rotor leading edge. When the advance ratio increases, the rolled-up wake develops into a concentrated vortex, ground vortex, under the rotor, and the induced velocity near the rotor leading edge becomes much smaller. The ground vortex diminishes as the advance ratio further increases. Recirculation and ground vortex occur in a very narrow region of the advance ratio. These results explain the irregular variations of rotor forces and moments with advance ratio reported in previous works.

关键词： vortex rotor advance concentrated visualization explain irregular narrow rolled

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复杂组分试样中金的测定方法的某些进展

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新疆大学学报(自然科学版) 1987年第1期 55-60页

作者：方国梁新疆冶金研究所

1 引言近年来,对复杂组分试样(矿石、精矿、尾矿、岩石、地质试样等)中金的测定取得了相当的成就,发表了一系列评述。比较了各种方法的特点,研究了试样组分对测定金的影响、代表试样的选择以及将试样转为溶液的方法,提出了许多性质、结... 详细信息

1 引言近年来,对复杂组分试样(矿石、精矿、尾矿、岩石、地质试样等)中金的测定取得了相当的成就,发表了一系列评述。比较了各种方法的特点,研究了试样组分对测定金的影响、代表试样的选择以及将试样转为溶液的方法,提出了许多性质、结构不同而有前途的分析试剂。

关键词： Gold Determination advance

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COUPLING SYSTEM OF MAN AND KARST

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中国岩溶 1992年第S1期11卷 230-231页

作者： Yang Hankui Zhu Wenxiao Li PoGuizhou Institute of Mountainous Resources,PRC

The 20％ of population in the world live in karst environment, which forms a special system of man and land, i.e., the formation of karst terrain in which people involved. The material flow and energy flow are slow-speed flows in natural karst environment, but they are accelerated by the function of scientific and technological advance in a social-karst environment, The dynamic coupling of two flows form a huge, non-equilibrated and open system,

关键词： karst technological terrain advance accelerated

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一种改进的多谓诃归并连接算法

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电脑知识与技术 2007年第11期2卷 736-738,743页

作者：冯林熊海灵吴玲丽西南大学计算机与信息科学学院重庆400715

结构连接攫作是XML数据库查谭的主要操作，结构连接算法优化是XML查询优化的核心。通过把扩展的QB编码和Suffindex后缀树引、入MPMGJN算法，提出了advance MPMGJN算法。实验证明，该算法在降低时间复杂度，减少冗余连接等方面有优良的... 详细信息

结构连接攫作是XML数据库查谭的主要操作，结构连接算法优化是XML查询优化的核心。通过把扩展的QB编码和Suffindex后缀树引、入MPMGJN算法，提出了advance MPMGJN算法。实验证明，该算法在降低时间复杂度，减少冗余连接等方面有优良的性能。

关键词： XML 查询优化结构连接 advance MPMGJN算法

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