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Geochemical characteristics of illite clay rocks from the Shihezi Formation in the Hanxing mining area and its sedimentary environment

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Mining Science and Technology 2011年第4期21卷 495-500页

作者： Xu Bohui ding shuli Wang Yu Liu Qinfu Key laboratory of Resource Survey and Research of Hebei Province Hebei University of Engineering Handan 056038 China School of Geological Sciences China University of Mining ＆ Technology Beijing 100083 China

We studied the geochemical characteristics of illite clay rocks and their importance from the 5hihezi Formation of Late Permian in the Hanxing mining area by means of ICP-M5 and sequential X-ray fluorescence spectrometry. The results show that the amount of SiO2 is between 53.37% and 61.58% （by weight） and that of Al2O3 22.40% and 31.31% （by weight）. The ratio of SiO2/Al2O3 lies between 1.71 and 2.75. The amount of K2O ranges from 1.11% to 2.56% （by weight）. The amounts of Fe and Ti are higher than the theoretical values in illite clay rock would indicate. The amounts of some trace elements, such as Ga, As, Ba, Cu, Th and U are higher than their Clark values, while that of another 23 trace elements are found to be dose to their Clark values. The amounts of REE range from 22.59 to 570.54 μg/g, with an average of 163.23μg/g. The ratios of LREE/HREE range from 5.41 to 21.82, with an average of 8.87. These characteristics show that LREE are much richer in content than HREE. The REE distribution patterns of our samples were characterized by clearly negative Ce and Eu anomalies. We analyzed the sedimentary environment of the Hanxing mining area in Late Permian by the characteristic element ratio method. The ratios of Mn/Fe range from 0 to 0.0168, which are lower than those in a marine sedimentary environment. The ratios of Sr/Ba （0.20-0.41） are less than 1. These are all indications that the sediments of the Hanxing mining area in Late Permian form largely a continental sedimentary environment. The sedimentary water is freshwater, a conclusion reached on the basis of the ratios of Th/U （2.66-6.62） and of Ca/（Ca ＋ Fe）（0.01-0.059）; the average ratio of Fe2＋/Fe3＋ is 4.8. The sedimentary water condition is weakly acidic and weakly oxidative-weakly reductive, a conclusion reached on the basis of ratios of Fe2＋/Fe3＋（4.8） and of Ceanom （-0.08）.

关键词： Hanxing mining arealllite Trace elements Geochemical Sedimentary environment

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Formation Mechanism of Maceral and Mineral Compositions of the“Barkinite”Liptobiolith from the Jinshan Mine,Anhui Province,China

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Acta Geologica Sinica(English Edition) 2010年第3期84卷 643-653页

作者： SUN Yuzhuang ZHAO Cunliang LIN Mingyue JIN Kankun ding shuli Key Laboratory of Resource Exploration Research of Hebei Province Hebei University of Engineering Handan Hebei 056038 China

In order to study the accumulation mechanism of＂barkinite＂,eight Late Permian channel benches（approximately 15-cm across and 10-cm deep） were taken from the Jinshan Mine,Anhui Province,*** samples were analyzed by microscopical and geochemical *** microscopical observations indicate that the occurrence modes of＂barkinite＂in this area are different from those in other areas of *** ratios of structureless＂barkinite＂are much higher in the Jinshan Mine,probably due to the flow-water and marine influenced ***, vitrinite macerals also show a strong *** vitrinite fluorescence characteristics have not been observed in the Permian＂barkinite＂coals from northern *** composition and variation of minerals in the column section also showed that the swamps in the study area were seriously influenced by seawater in the early and late stage during the peat accumulation.

关键词： macerai "barkinite" liptobiolith vitrinite mineralogy Permian coal Jinshan Mine China

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Polyamine Accumulation in Transgenic Tomato Enhances the Tolerance to High Temperature Stress

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Journal of Integrative Plant Biology 2009年第5期51卷 489-499页

作者： Lin Cheng Yijing Zou shuli ding Jiajing Zhang Xiaolin Yu Jiashu Cao Gang Lu Key Laboratory of Horticultural Plant Growth Development and Biotechnology Ministry of Agriculture Department of Horticulture Zhejiang University Hangzhou 310029 China

Polyamines play an important role in plant response to abiotic stress. S-adenosyl-l-methionine decarboxylase （SAMDC） is one of the key regulatory enzymes in the biosynthesis of polyamines. In order to better understand the effect of regulation of polyamine biosynthesis on the tolerance of high-temperature stress in tomato, SAMDC cDNA isolated from Saccharomyces cerevisiae was introduced into tomato genome by means of Agrobacterium tumefaciens through leaf disc transformation. Transgene and expression was confirmed by Southern and Northern blot analyses, respectively. Transgenic plants expressing yeast SAMDC produced 1.7- to 2.4-fold higher levels of spermidine and spermine than wildtype plants under high temperature stress, and enhanced antioxidant enzyme activity and the protection of membrane lipid peroxidation was also observed. This subsequently improved the efficiency of CO2 assimilation and protected the plants from high temperature stress, which indicated that the transgenic tomato presented an enhanced tolerance to high temperature stress （38℃） compared with wild-type plants. Our results demonstrated clearly that increasing polyamine biosynthesis in plants may be a means of creating high temperature-tolerant germplasm.

关键词： heat stress Lycopersicon esculentum polyamines Saccharomyces cerevisiae S-adenosylmethionine decarboxylase transformation.

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Facile synthesis of graphene via reduction of graphene oxide by artemisinin in ethanol

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Journal of Materiomics 2018年第3期4卷 256-265页

作者： Dandan Hou Qinfu Liu Xianshuai Wang Ying Quan Zhichuan Qiao Li Yu shuli ding School of Geoscience and Surveying Engineering China University of Mining&TechnologyBeijing 100083China Key Laboratory of Resource Survey and Research of Hebei Province Hebei University of EngineeringHandan 056038China

The preparation of reduced graphene oxide(RGO)by chemical reduction of graphene oxide(GO)usually involves highly toxic reducing agents which are harmful to the environment and human *** this paper,a mediated facile and relative green approach for the preparation of RGO in ethanol using artemisinin as a reducing agent is reported for the first *** morphology and de-oxidation efficiency of the obtained RGO were characterized by transmission electron microscope(TEM),atomic force microscope(AFM),and X-ray photoelectron spectroscopy(XPS).The results showed that artemisinin can effectively reduce GO into few-layered RGO with a high carbon to oxygen ratio(11.7).The mechanism for elimination of oxygen-containing functional groups decorated on GO nanosheets by artemisinin was *** important features of relatively environmentally friendly and facile operation procedures endow this approach with great promise in the mass production of RGO and various graphene-based materials,especially for biomaterials.

关键词： Nanostructures Green reduction Graphene oxide Artemisinin

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高中英语课堂教师话语的隐喻认知及其教学效果的关系研究

高中英语课堂教师话语的隐喻认知及其教学效果的关系研究

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作者： ding shuli 西安外国语大学

学位级别：硕士

近几年，中国越来越多的高中开始实施英语课全英教学。教师话语，作为外语教学中学生可理解性输入的一个重要因素，引发学者和教育者越来越多的关注。经研究发现，教师话语质量不佳及其导致的枯燥的教学氛围仍是中国外语教学中最头痛的... 详细信息

近几年，中国越来越多的高中开始实施英语课全英教学。教师话语，作为外语教学中学生可理解性输入的一个重要因素，引发学者和教育者越来越多的关注。经研究发现，教师话语质量不佳及其导致的枯燥的教学氛围仍是中国外语教学中最头痛的问题。由此，把隐喻引介入教师话语来提高教师话语质量，活跃课堂气氛的方法得到关注与研究。本文致力于研究如何把隐喻嵌入教师话语及其对外语教学的影响。在此基础上提出了五个相关问题。为了研究隐喻对教师话语及外语教学的影响，本文采用了定量和定性的实证研究。观看视频资料，观察课堂，进行问卷调查及采访，获得相关数据域材料。通过对收集数据的观察和分析，得出了以下结论：（1）在阅读课上，教师话语使用的结构隐喻远远多于方向隐喻和本体隐喻。获得一等奖的英语教师比普通英语教师使用的隐喻密度高很多。（2）总体上，课堂话语和讲解中的隐喻密度远远高于提问和反馈。一等奖英语教师与普通英语教师在此方面结果一致。（3）在阅读课不同的环节中，6位一等奖英语教师在课文讲解和词汇讲解中的隐喻密度远远超过语法讲解和习题讲解。（4）隐喻化的教师话语可以影响外语教学，通过提高教师和学生的隐喻能力;提高教师话语质量及活跃课堂气氛。（5）阻碍教师话语隐喻化的因素主要来自于教师本身，学生以及我国现有的教育现状。针对上述结果，本文研究得到的启示是高中外语教师在课堂上应多引入提供可理解性输入的隐喻，以提高教师话语质量，提升中国高中英语阅读课教学水平。

关键词：教师话语隐喻英语外语教学阅读课隐喻密度

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The Factors on Removal of Zinc Cation from Aqueous Solution by Bentonite

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Natural Resources 2011年第2期2卷 107-113页

作者： shuli ding Juanjuan Shen Bohui Xu Qinfu Liu Yuzhuang Sun 不详

The removing zinc cation from aqueous solution by Ca-bentonite and Na-exchanged bentonite was studied. The factors such as the initial concentration of Zn2+, the liquid-to-solid ratio, pH, adsorption time, stirring speed, coexisting ions, temperature and bentonite particle size were investigated. The results show that the adsorption process of bentonite accorded with the Freundlich isotherm model, the removal of Zn2+ by Ca-bentonite and Na-exchanged bentonite reached equilibrium in 2 h, and adsorption of Na- bentonite was superior to Ca-bentonite. The adsorption rate of zinc increased with increasing pH, temperature, stirring speed, time span and with decreasing bentonite particle, the initial concentration of Zn2+ and the liquid-to-solid ratio. In mixed solution which contains Pb2+and Cr6+, Pb2+ has no influ- ence on the removal of Zn2+ by both the bentonites while Cr6+can decease it.

关键词： Bentonite Zn2+ Adsorption

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膨润土吸附水中Cr(Ⅵ)的影响因素研究

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非金属矿 2006年第3期29卷 45-48页

作者：丁述理孙晨光河北工程学院河北省资源勘测研究重点实验室河北邯郸056038

研究了钙基膨润土(M-1)及其改性土(M-2)对模拟废水和实际废水中Cr6+的吸附行为。结果表明,钙基膨润土及其改性土对Cr6+的吸附,在1h基本达到吸附平衡,吸附量随溶液pH值的增大、温度的升高、膨润土粒度的变粗以及溶液中Cr6+的初始浓度的... 详细信息

研究了钙基膨润土(M-1)及其改性土(M-2)对模拟废水和实际废水中Cr6+的吸附行为。结果表明,钙基膨润土及其改性土对Cr6+的吸附,在1h基本达到吸附平衡,吸附量随溶液pH值的增大、温度的升高、膨润土粒度的变粗以及溶液中Cr6+的初始浓度的增高而降低;改性土的吸附效果明显好于钙基膨润土,去除率可达95%以上;用改性土处理后,实际废水中Cr6+的浓度低于国家标准规定。

关键词：吸附 Cr^6+ 膨润土重金属废水

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The Characteristics of Mechanical Grinding on Kaolinite Structure and Thermal Behavior

The Characteristics of Mechanical Grinding on Kaolinite Stru...

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2012 International Conference on Future Energy,Environment,and Materials

作者： shuli ding Leilei Zhang Xiaohui Ren Bohui Xu Hong Zhang Fashao Ma Key Laboratory of Resources of Hebei Province Hebei University of Engineering

The relationship between kaolinite structure and the temperature of thermal transformation of phase was discussed in this paper through grinding and heating treatment. The results show that the structure of kaolinite is destroyed rapidly with increasing mechanical grinding time, and the kaolinite structure collapses completely after 1 h grinding. The temperature of thermal transformation of phase decreases with the destruction of kaolinite structure. This result has a great significance for the utilization of kaolinite associated with coal measures in China.

关键词： kaolinite mechanical grinding thermal behavior

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Complicated Decision Task Modeling Based on Bayesian Networks

Complicated Decision Task Modeling Based on Bayesian Network...

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第三届国际自动化测试与仪器仪表学术会议

作者： ding Shiyong Wang shuli Chen Kangzhu (Academy of Armored Forces Engineering Beijing 100072 China)

＜正＞With the quickly development of the high-technique, a severe challenge is put off to the complicated task’s decision ＆ solving by the complexity of the *** and solving the complicated decision task by using Agent technique and the Bayesian networks technique can make full use of the mutual relation among the system’s parts,and provide a new thinking for the complicated problem *** analysis for the process of complicated decision task modeling basing on Bayesian networks is given,and then the Agent technique is used to the sub-networks for the modularity and solving of the complicated decision task,the two techniques simplify the decision process.

关键词： Intelligent decision Bayesian Networks Agent Cooperation Modularity

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Natural vibration and critical velocity of translating Timoshenko beam with non-homogeneous boundaries

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Applied Mathematics and Mechanics(English Edition) 2024年第9期45卷 1523-1538页

作者： Yanan LI Jieyu ding Hu ding Liqun CHEN Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy EngineeringShanghai Frontier Science Center of MechanoinformaticsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200072China School of Mathematics and Statistics Qingdao UniversityQingdao 266071Shandong ProvinceChina

In most practical engineering applications,the translating belt wraps around two fixed *** boundary conditions of the dynamic model are typically specified as simply supported or fixed *** this paper,non-homogeneous boundaries are introduced by the support *** the translating belt as the mechanical prototype,the vibration characteristics of translating Timoshenko beam models with nonhomogeneous boundaries are investigated for the first *** governing equations of Timoshenko beam are deduced by employing the generalized Hamilton's *** effects of parameters such as the radius of wheel and the length of belt on vibration characteristics including the equilibrium deformations,critical velocities,natural frequencies,and modes,are numerically calculated and *** numerical results indicate that the beam experiences deformation characterized by varying curvatures near the *** radii of the wheels play a pivotal role in determining the change in trend of the relative difference between two beam *** the results unearths that the relative difference in equilibrium deformations between the two beam models is more pronounced with smaller-sized *** the two wheels are of equal size,the critical velocities of both beam models reach their respective *** addition,the relative difference in natural frequencies between the two beam models exhibits nonlinear variation and can easily exceed 50%.Furthermore,as the axial velocities increase,the impact of non-homogeneous boundaries on modal shape of translating beam becomes more *** dealing with non-homogeneous boundaries is challenging,beam models with non-homogeneous boundaries are more sensitive to parameters,and the differences between the two types of beams undergo some interesting variations under the influence of non-homogeneous boundaries.

关键词： translating beam Timoshenko beam non-homogeneous boundary natural frequency critical velocity

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