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| 1 | Mineralization Styles and Genesis of the Yinkeng Au-Ag-Pb-Zn-Cu-Mn Polymetallic Orefield, Southern Jiangxi Province, SE China: Evidence from Geology, Fluid Inclusions, Isotopes and Chronology显示文摘The Yinkeng orefield in Yudu County, Jiangxi Province, SE China, is a zone of concentrated Au-Ag-Pb-Zn-Cu-Mn polymetallic ores. Based on summing up basic geology and ore geology of the orefield, the polymetallic deposits in the orefield have been divided into seven major substyles according to their occurring positions and control factors. The ore-forming fluid inclusion styles in the orefield include those of two-phase fluid, liquid CO2-bearing three-phase and daughter mineral-bearing multi-phase. The homogenization temperatures range from 382o to 122oC, falling into five clusters of 370o to 390o, 300o to 360o, 230o to 300o, 210o to 290o and 120o to 200o, and the clusters of 300o to 360o, 230o to 300o and 120o to 200o are three major mineralization stages, with fluid salinity peaks from 4.14% to 7.31%, 2.07% to 7.31% and 0.53% to 3.90%, respectively. The ore-forming fluids are mainly type of NaCl-H2O with medium to high density(0.74–1.02 g/cm3), or CO2-bearing NaCl-H2O with medium to low density(0.18–0.79 g/cm3). The fluid salinity and density both show a decline tendency with decreasing temperature. According to the measurement and calculation of Hand O-isotopic compositions in the quartz of the quartz-sulfide veins, δDV-SMOW of the ore-forming fluid is from-84‰ to-54‰, and δ18OV-SMOW of that is from 6.75‰ to 9.21‰, indicating a magmatic fluid. The δ34SV-CDT of sulfides in the ores fall into two groups, one is from-4.4‰ to 2.2‰ with average of-1.42‰, and the other from 18.8‰ to 21.6‰ with average of 19.8‰. The S-isotopic data shows one peak at-4.4‰ to 2.2‰(meaning-1.42‰) suggesting a simple magmatic sulfur source. The ore Pbisotopic ratios are 206Pb/204Pb from 17.817 to 17.983, 207Pb/204Pb from 15.470 to 15.620 and 208Pb/204Pb from 38.072 to 38.481, indicating characteristics of mantle-derived lead. The data show that the major ore deposits in the orefield have a magmatic-hydrothermal genesis and that the SHRIMP zircon age of the granodiorite porphyry, closely related to the mineralization, is 151.2±4.2 Ma(MSWD = 1.3), which can represent the formation ages of the ores and intrusion rocks. The study aids understanding of the ore-forming processes of the major metallic ore deposits in the orefield. | FENG Chengyou LI Daxin ZENG Zailin ZHANG Dequan SHE Hongquan | 2014 | Acta Geologica Sinica(English Edition)2014，88，3： | 14 |
| 2 | Chronology of the Tungsten Deposits in Southern Jiangxi Province, and Episodes and Zonation of the Regional W-Sn Mineralization-Evidence from High-precision Zircon U-Pb, Molybdenite Re-Os and Muscovite Ar-Ar Ages显示文摘Previous studies have obtained some petrogenetic and metallogenic chronological data with SHRIMP (sensitive high-resolution ion microprobe) zircon U-Pb, zircon LA-ICPMS (laser-ablation-inductively coupled plasma mass spectroscopy) U-Pb, molybdenite Re-Os isochron and muscovite Ar-Ar methods in southern Jiangxi Province and its adjacent areas. Based on these, the purpose of this paper is to study the petrogenetic and metallogenic ages and their time gap for different genetic types of W-Sn deposits, and thus to research their numerous episodes, zonal arrangement and their geodynamic background. The result shows that the large-scale W-Sn mineralization in southern Jiangxi Province occurred in the middle to late Jurassic (170-150 Ma), the skarn W-Sn-polymetallic deposits formed much earlier (170-161 Ma), and all of the wolframite-quartz vein type, greisen type, altered granite type and fractured zone type tungsten deposits formed in the late Jurassic (160-150 Ma). In one ore field or ore district, greisen type tungsten deposits formed earlier than quartz vein type ones hosted in the endoor exo-contact zone; and quartz vein type hosted in the endocontact zone formed earlier than that of exocontact zone. There is no significant time difference between tungstentin mineralization and its intimately associated parent granite emplacement (1-6 Ma). They all formed in the same rock-forming and ore-forming system and under the same geodynamic setting. Regionally, rock-forming and ore-forming processes of the W-Sn deposits in the Nanling region (include southern Jiangxi Province, southern Hunan Province, northern Guangdong Province and eastern Guangxi Zhuang Autonomous Region) exhibit numerous episodes. The mineralization in the Nanling region mainly occurred at (240-210) Ma, (170-150) Ma and (130-90) Ma. The tungsten-tin deposits in this region are centered by the largest scale in southern Jiangxi Province and southern Hunan Province, and become small in the east, west, south and north directions. This displays a zonal arrangement and temporal and spatial distribution regularity. Integrated with the latest research results, it is concluded that the W-Sn mineralization in southern Jiangxi Province and its adjacent areas corresponds to the second large-scale mineralization in South China. The Indosinian W-Sn mineralization formed under the extensional tectonic regime between collisional compressional stages, while the Yanshanian large-scale petrogenetic and metallogenic processes occurred in the Jurassic intraplate extensional geodynamic setting of lithosphere extension. | FENG Chengyou ZHANG Dequan ZENG Zailind WANG Song | 2012 | Acta Geologica Sinica(English Edition)2012，86，3： | 9 |
| 3 | China's First Independent Cobalt Deposit and its Metallogenic Mechanism:Evidence from Fluid Inclusions and Isotopic Geochemistry显示文摘Tuolugou 钴存款是第一个独立人士大规模共同忍受并且在西北的中国发现的忍受 Au 沉积物。它在 Qinghai 省位于东方 Kunlun orogenic 带,并且在低档一致地发生有开发得好的 Na 富有的热水的沉积岩石和典型热水的沉积矿石织物的变形火山沉积的岩石系列。液体包括和同位素的地球化学研究建议钴使矿物化液体被 NaCl-H2O 系统统治,由为金矿化作用负责的 NaCl-CO2-H2O-N2 系统伴随了。巨大, banded 和传播黄铁矿矿石有类似的作文他和从使矿物化的液体的 Ar 同位素与到 0.31Ra (平均 0.21Ra )的在 0.10 之间的 3He/4He 范围,并且在 302 和 569 之间的 40Ar/36Ar (平均 373 ),它反映使矿物化的液体从深深地传播的大气的水主导地导出的那个公司。零的黄铁矿途径的 34S 价值(34S 从 4.5 到 +1.5,在 -1.8 附近集中到反映它的深来源的 -0.2), 。矿石铅被显然高的 radiogenesis 描绘,与 206Pb/204Pb > 19.279, 207Pb/204Pb > 15.691 并且 208Pb/204Pb > 39.627,并且它的价值从国家岩石显示出一个增加趋势,地区性的古生代的暴烈的岩石到矿石。这可能建议了矿石 Pb 由沥滤主要从国家岩石导出的那高 radiogentic 大气的水主导的热水的液体在它在深度的发行量期间。钴主要在硫化物阶段发生(例如黄铁矿) ,但是钴丰富和矿物质有的共同忍受的增加的内容与变形的度的积极关联。Tuolugou 沉积物和沉积物有在地质的特征和主要的钴的 metallogenic 模式打击类似的另外的典型阶层界限 Co-Cu-Au 所有他们是 syngenetic 在起源的热水的 exhalative 沉积。 | FENG Chengyou QI Feng ZHANG Dequan LI Daxin SHE Hongquan | 2011 | Acta Geologica Sinica(English Edition)2011，85，6： | 8 |
| 4 | Heat Treatment Effect on Microstructure, Hardness and Wear Resistance of Cr26 White Cast Iron显示文摘High chromium cast iron(HCCI) is taken as material of coal water slurry pump impeller, but it is susceptible to produce serious abrasive wear and erosion wear because of souring of hard coal particles. The research on optimization of heat treatments to improve abrasive wear properties of HCCI is insufficient, so effect of heat treatments on the microstructure, hardness, toughness, and wear resistance of Cr26 HCCI is investigated to determine the optimal heat treatment process for HCCI. A series of heat treatments are employed. The microstructures of HCCI specimens are examined by using optical microscopy and scanning electron microscopy. The hardness and impact fracture toughness of as-cast and heat treated specimens are measured. The wear tests are assessed by a Type M200 ring-on block wear tester. The results show the following: With increase of the quenching temperature from 950 ℃ to 1050 ℃, the hardness of Cr26 HCCI increased to a certain value, kept for a time and then decreased. The optimal heat treatment process is 2 h quenching treatment at 1000 ℃, followed by a subsequent 2 h tempering at 400 ℃. The hardness of HCCI is related to the precipitation and redissolution of secondary carbides in the process of heat treatment. The subsequent tempering treatment would result in a slight decrease of hardness but increase of toughness. The wear resistance is much related to the 'supporting' effect of the matrix and the 'protective' effect of the hard carbide embedded in the matrix, and the wear resistance is further dependent on the hardness and the toughness of the matrix. This research can provide an important insight on developing an optimized heat treatment method to improve the wear resistance of HCCI. | ZHOU Shaoping SHEN Yehui ZHANG Hao CHEN Dequan | 2015 | Chinese Journal of Mechanical Engineering2015，28，1： | 7 |
| 5 | Removal of organic matter and disinfection by-products precursors in a hybrid process combining ozonation with ceramic membrane ultrafiltration显示文摘包括凝结, ozonation,陶器的 ultrafiltration (UF ) 和生物学的激活的碳(用绳子拖的平底渡船) 的综合进程的性能过滤从微弄脏表面水为有机物和消毒副产品(DBP ) 先锋的移动被调查。有 120 m 的能力的飞行员规模植物 < 啜 class= “ a-plus-plus ” > 3 为喝水的处理每天被建立并且操作。陶器的膜与 50 m 的过滤区域被使用 < 啜 class= “ a-plus-plus ” > 2 和 60 nm 的一种毛孔尺寸。溶解有机物包括恐水病的酸(HoA ) 被划分成五部分,底(壁炉内部的一锅架) 并且中立(爱人) ,弱恐水病的酸(停) 并且吸水的物质(他) 由 DAX-8 和 XAD-4 树脂。实验结果证明有机物的移动显著地预先与 ozonation 被改进。简言之,综合过程移开73%溶解的器官的碳(文档),中的87%个紫外<潜水艇class=“ a-plus-plus ”> 254 ,77% trihalomethane ( THM )先锋,76% haloacetic 酸( HAA )先锋, 83%of trichloracetic 醛( CH )先锋,77% dichloroacetonitrile ( DCAN )先锋,51% trichloroacetonitrile ( TCAN )先锋,96% 1,1,1-trichloroacetone ( TCP )先锋并且63% trichloronitromethane ( TCNM )先锋。恐水病的有机物在 ozonation/UF 期间被变换成吸水的有机物,当有 10003000 Da 的分子的重量的有机物显著地被减少并且变换成更低的分子的重量时有机物从 200500 Da 。文档与 DBP 的形成潜力有一种近线性的关系。 | Xiaojiang FAN Yi TAO Dequan WEI Xihui ZHANG Ying LEI Hiroshi NOGUCHI | 2015 | Frontiers of Environmental Science & Engineering2015，9，1： | 7 |
| 6 | Ostracod Biostratigraphy of the Late Cretaceous Qingshankou Formation in the Songliao Basin显示文摘ostracod biostratigraphic 研究从使用从在 Songliao 盆在迟了的白垩纪 Qingshankou 形成钻的五口选择的井拿的核心构造的合成的地质的节在 425 件样品上被执行。19 个 ostracod 地区的一个总数在形成, 3 最新被建立被建立, 3 被修订。19 个 ostracod 地区详细被描述。这研究在 Songliao 盆在油矿为详细 stratigraphic 部门和 Qingshankou 形成和 Gaotaizi 油水库的关联提供一个基础。 | ZHANG Zhili LIU Zhenwen WANG Baichang ZHANG Ying YE Dequan | 2007 | Acta Geologica Sinica(English Edition)2007，81，5： | 5 |
| 7 | Highly efficient K-Fe/C catalysts derived from metal-organic frameworks towards ammonia synthesis显示文摘Fe-based catalysts have been discovered as the best elementary metal-based heterogeneous catalysts for the ammonia synthesis in industrial application during the last century.Herein,a novel and scalable strategy is developed to prepare the K-promoted Fe/C catalyst with extremely high Fe loading (> 50 wt.%) through pyrolysis of the Fe-based metal-organic framework (MOF) xerogel.The obtained K-Fe/C catalysts exhibited superior activity and stability towards ammonia synthesis.The weight-specific reaction rate of Fe/C with K2O as promoter can achieve 12.4 mmol·g-1·h-1 at 350 ℃ and 30.4 mmol·g-1·h-1 at 400 ℃,approximately four and two times higher than that of the commercial fused-iron catalyst (3.4 mmol·g-1·h-1 at 350 ℃ and 16.7 mmol·g-1·h-1 at 400 ℃) under the same condition,respectively.The excellent performance of K-Fe/C can be ascribed to the inherited structure derived from the metal-organic frame precursors and the promotion of potassium,which can modify the binding energy of reactant molecules on the Fe surface,transfer electrons to iron for effective activation of nitrogen,prevent agglomeration of Fe nanoparticle (NPs) and restrain side reaction of carbon matrix to methane. | Pengqi Yan Wenhan Guo Zibin Liang Wei Meng Zhen Yin Siwei Li Mengzhu Li Mengtao Zhang Jie Yan Dequan Xiao Ruqiang Zou Ding Ma | 2019 | Nano Research2019，12，9： | 4 |
| 8 | A DISCRETE-TIME Geo/G/1 RETRIAL QUEUE WITH J-VACATION POLICY AND GENERAL RETRIAL TIMES显示文摘The authors discuss a discrete-time Geo/G/1 retrial queue with J-vacation policy and general retrial times.As soon as the orbit is empty,the server takes a vacation.However,the server is allowed to take a maximum number J of vacations,if the system remains empty after the end of a vacation.If there is at least one customer in the orbit at the end of a vacation,the server begins to serve the new arrivals or the arriving customers from the orbit.For this model,the authors focus on the steady-state analysis for the considered queueing system.Firstly,the authors obtain the generating functions of the number of customers in the orbit and in the system.Then,the authors obtain the closed-form expressions of some performance measures of the system and also give a stochastic decomposition result for the system size.Besides,the relationship between this discrete-time model and the corresponding continuous-time model is also investigated.Finally,some numerical results are provided. | YUE Dequan ZHANG Feng | 2013 | Journal of Systems Science & Complexity2013，26，4： | 4 |
| 9 | Isotopes and Geochronology of the Meixian-type Pb-Zn-(Ag)Deposits,Central Fujian Rift,South China:Implications for Geological Events显示文摘中央福建裂缝是另一新、重要的 volcanogenic 巨大的硫化物 Pb-Zn polymetallic metallogenetic 带。为了发现材料开始和 Meixian 类型 Pb-Zn-Ag 的矿化作用时期,扔,矿石和墙的 S 和 Pb 同位素分析和同位素地球年代学为五主要沉积物摇被讨论。从硫化物矿石的硫同位素的作文在不同存款稍微变化,这被结束,吝啬的价值接近零, 34S 从 ?3.5%到在 +2.0 平均的+5.6%,它显示硫可能从岩浆发源或可能从火山直接爆发或从招待矿石的暴烈的岩石被沥滤。从在大多数存款的矿石的铅显示放射性的开始特性(206Pb/204Pb > 18.140, 207Pb/204Pb > 15.584, 208Pb/204Pb > 38.569 ) 并且矿石的铅同位素值比墙岩石的那些高,它显示铅多半从招待矿石的暴烈的岩石被沥滤。基于同位素数据,二重要 Pb-Zn metallogenesis 中间原生地并且迟了原生地被描出,它是沉积 exhalative metallogenesis (单个锆石 U-Pb ,等时的 Sm-Nd 和标明日期招待矿石的墙岩石的年龄的 Ar-Ar 被计算在 9331788 妈之中)并且 Yanshanian magmatic 热水的附加并且轮流出现的 metallogenesis (恼人的虾锆石 U-Pb 和 Rb-Sr 在 127154 妈之间的等时的年龄)。 | FENG Chengyou ZHANG Dequan LI Daxin SHE Hongquan DONG Yingjun | 2008 | Acta Geologica Sinica(English Edition)2008，82，4： | 3 |
| 10 | The maize late embryogenesis abundant protein Zm DHN13 positively regulates copper tolerance in transgenic yeast and tobacco显示文摘Late embryogenesis abundant (LEA) proteins accumulate in the late stage of plant seed development, and are upregulated in most plants during drought, cold, heat, or salinity stress. LEA proteins can be classified by amino-acid sequence into seven groups. Dehydrins belong to LEA protein group Ⅱ. In previous studies, the maize KS type dehydrin ZmDHN13 increased the tolerance of transgenic tobacco to oxidative stress. In the present study, ZmDHN13 was identified under copper stress conditions, and the protein was then characterized using transgenic yeast and tobacco plants to investigate its functions. ZmDHN13 bound Cu2+. Its overexpression in transgenic tobacco conferred tolerance to copper stress by binding metals and reducing the accumulation of reactive oxygen species (ROS). Three conserved domains displayed a cooperative effect under copper stress conditions. | Yang Liu Daxing Li Qiping Song Tianpeng Zhang Dequan Li Xinghong Yang | 2019 | The Crop Journal2019，7，3： | 3 |
| 11 | Fluid Inclusion Geochemistry of Metallic Ore Deposits in the South- Central Sector of theDa Hinggan Mountains in China显示文摘Physicochemical parameters of mineralization such as temperature, pressure, salinity, density, composition and boiling of ore fluids as well as pH, Eh, fo2 and reducing parameter in theprocess of mineralization of major ore deposits in the study district have been obtained by the authors through systematic observation and determination of characteristics and phase changes of fluid inclusions at different temperatures and analysis of gaseous and liquid phase compositions of the inclusions, thus providing a scientific basis for the division of mineralization-alteration stages, types of mineral deposits and minerogenetic series and the deepening of the knowledge about the ore-forming processes and mechanisms of mineral deposits. It is indicated that the deposits of the same type have similar fluid inclusion geochemical features and physicochemical parameters though they belong to different minerogenetic series, while the compositions of inclusions are not conditioned by deposit types but closely related | Sheng Jifu, Zhang Dequan and Li YanInstitute of Mineral Deposits, Chinese Academy of Geological Sciences, Beijing Jiang M inxi | 1995 | Acta Geologica Sinica(English Edition)1995，69，3： | 3 |
| 12 | Highly active sites of low spin Fe^(Ⅱ)N_(4)species:The identification and the ORR performance显示文摘Over recent years,catalytic materials of Fe-N-C species have been recognized being active for oxygen reduction reaction(ORR).However,the identification of active site remains challenging as it generally involves a pyrolysis process and mixed components being obtained.Herein Fe_(3)C/C and Fe_(2)N/C samples were synthesized by temperature programmed reduction of Fe precursors in 15%CH_(4)/H_(2)and pure NH_(3),respectively.By acid leaching of Fe_(2)N/C sample,only single sites of FeN_(4)species were presented,providing an ideal model for identification of catalytic functions of the single sites of FeN_(4)in ORR.A correlation was conducted between the concentration of Fe^(Ⅱ)N_(4)in low spin state by Mossbauer spectra and the kinetic current density at 0.8 V in alkaline media,and such a structure-performance correlation assures the catalytic roles of low spin Fe^(Ⅱ)N_(4) species as highly active sites for the ORR. | Huizhu Cai Bingbing Chen Xiao Zhang Yuchen Deng Dequan Xiao Ding Ma Chuan Shi | 2021 | Nano Research2021，14，1： | 2 |
| 13 | Silicone/graphene oxide co-cross-linked aerogels with wide-temperature mechanical flexibility,super-hydrophobicity and flame resistance for exceptional thermal insulation and oil/water separation显示文摘Development of multifunctional and high-performance silicone aerogel is highly required for various promising applications.However,unstable cross-linking structure and poor thermal stability of silicone network as well as complicated processing restrict the practical use significantly.Herein,we report a facile and versatile ambient drying strategy to fabricate lightweight,wide-temperature flexible,super-hydrophobic and flame retardant silicone composite aerogels modified with low-content functionalized graphene oxide(FGO).After optimizing silane molecules,incorporation ofγ-aminopropyltriethoxysilane functionalization is found to promote the dispersion stability of GO during the hydrolysis-polymerization process and thus produce the formation of unique strip-like co-cross-linked network.Consequently,the aerogels containing∼2.0 wt%FGO not only possess good cyclic compressive stability under strain of 70%for 100 cycles and outstanding mechanical reliability in wide temperature range(from liquid nitrogen to 350℃),but also display excellent flame resistance and super-hydrophobicity.Further,the optimized silicone/FGO aerogels display exceptional thermal insulating performance superior to pure aerogel and hydrocarbon polymer foams,and they also show efficient oil absorption and separation capacity for var-ious solvents and oil from water.Clearly,this work provides a new route for the rational design and development of advanced silicone composite aerogels for multifunctional applications. | Zhao-Hui Zhang Zuan-Yu Chen Yi-Hao Tang Yu-Tong Li Dequan Ma Guo-Dong Zhang Rabah Boukherroub Cheng-Fei Cao Li-Xiu Gong Pingan Song Kun Cao Long-Cheng Tang | 2022 | Journal of Materials Science & Technology2022，，19： | 2 |
| 14 | Helioscopianoids A–Q,bioactive jatrophane diterpenoid esters from Euphorbia helioscopia显示文摘The EtOH extracts of the whole plants of Euphorbia helioscopia afforded 17 new jatrophane diterpenoid esters, helioscopianoids A–Q(1–17), along with eight known compounds(18–25). Their structures were elucidated by extensive spectroscopic methods and Mo_2(OAc)_4-induced ECD analysis,and the structures of compounds 1, 2, and 7 were confirmed by X-ray crystallography. Compounds 1–17 were evaluated for inhibitory effects on P-glycoprotein(P-gp) in an adriamycin(ADM)-resistant human breast adenocarcinoma cell line(MCF-7/ADR) and neuroprotective effects against serum deprivationinduced and rotenone-induced PC12 cell damage. Compounds 8 and 16 increased the accumulation of ADM in MCF-7/ADR cells by approximately 3-fold at a concentration of 20 μmol/L. Compound 8 could attenuate rotenone-induced PC12 cell damage, and compounds 2, 8, and 12 showed neuroprotective activities against serum deprivation-induced PC12 cell damage. | Zhenpeng Mai Gang Ni Yanfei Liu Zhao Zhang Li Li Naihong Chen Dequan Yu | 2018 | Acta Pharmaceutica Sinica B2018，8，5： | 2 |
| 15 | Boundary Element Analysis of Fluid Dynamics of Complex Shapaed Bearing显示文摘 | Yang Dequan Zhang Guoyou | 1991 | Computational Mechanics1991，2，： | 1 |
| 16 | 显示文摘 | Zhang Gaixia Sun Shuhui Yang Dequan | 2008 | Carbon2008，46，： | 1 |
| 17 | Effect of SC-CO 2 pretreatment in increasing rice straw biomass conversion显示文摘 | Miao Gao Feng Xu Shurong Li Xiaoci Ji Sanfeng Chen Dequan Zhang | 2010 | Biosystems Engineering2010，，4： | 1 |
| 18 | Optimal performance analysis of an M/M/1/N queue system with balking,reneging and server vacation显示文摘 | Yue Dequan Zhang Yan Yue Wuyi | 2006 | International Journal of Pure and Applied Mathematics2006，28，1： | 1 |
| 19 | Response Surface Analysis of Rhamnolipid Production by Pseudomonas Aeruginosa Strain Z41 with Two Response Values显示文摘 | Zhang Xiangsheng Lu Dequan | 2013 | African Journal of Microbiology Research2013，7，22： | 1 |
| 20 | Alteration-mineralization zoning and fluid inclusions of the high sulfidation epithermal Cu-Au mineralization at Zijinshan, Fujian Province, China显示文摘 | SO Chil-Sup ZHANG Dequan YUN Seong-Taek | 1998 | Economic Geology1998，93，7： | 1 |
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