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| 1 | Delamination and destruction of the North China Craton显示文摘This article presents an overview on recent developments in studies of chemical and physical processes of lithospheric delamination with respect to destruction of the North China Craton. It is emphasized that the pyroxenite source resulting from interaction between eclogite-derived melt and peridotite is a direct consequence of delamination. The pyroxenite source thus formed has unique mineralogical and geochemical features, which characterize Mesozoic basalts of the North China Craton. Melt-peridotite interaction played an important role in refertilization of cratonic lithospheric mantle, leading to density increase, weakening and final destabilization of the North China Craton. The nature of the melt is the key to distinguish mechanisms of destructing this craton. | GAO Shan ZHANG JunFeng XU WenLiang LIU YongSheng | 2009 | Chinese Science Bulletin2009，54，19： | 53 |
| 2 | Genetic diversity of rice cultivars (Oryza sativa L.) in China and the temporal trends in recent fifty years显示文摘To understand geographical distribution of the genetic diversity of rice cultivars {Oryza sativa L.) and its trends in recent fifty years in China, 453 ’ accessions were analyzed by 36 microsatellites loci and 42 phenotypic traits. Results revealed that the genetic diversity by SSRs is highly consistent with that by phenotypic traits and the genetic diversity of indica cultivars was higher than that of japonica cultivars; the genetic diversity of cultivars declined from 1950s to 1980s and then increased greatly; among the six rice ecological zones (REZs), genetic diversity of REZTl was the highest and those of REZV and REZVT were the lowest at both DNA and phenotypic level. Jiangsu and Jiangxi provinces in the middle and lower reaches of Yangtze River and Sichuan province in southwest of China were the areas with the highest genetic diversity. Breeders in REZV which is an important japonica rice area but with very low genetic diversity should explore more gene resources to widen the genetic backgrounds of cultivars. | QI Yonawen ZHANG Dongling ZHANG Hongliang WANG Meixing SUN Junli WEI Xinghua QIU Zongen TANG Shengxiang CAO Yongsheng WANG Xiangkun LI Zichao | 2006 | Chinese Science Bulletin2006，51，6： | 27 |
| 3 | Mineral chemistry and isotope geochemistry of pyrite from the Heilangou gold deposit, Jiaodong Peninsula, Eastern China显示文摘The Heilangou gold deposit is located in the northern QixiaePenglai gold belt, which is one amongst the three large gold belts in the eastern Shandong Province(Jiaodong Peninsula). The ore body has formed within the Guojialing granite. In this study, we report the mineral chemistry of pyrite, as well as the S, Pb,and HeO isotope data of the Heilangou gold deposit. The chemical composition of pyrite in the Heilangou gold deposit indicates that the associated gold deposit is a typical magmatic hydrothermal one. The geochemical signatures and crystal structure of pyrite show that the ore-forming materials have been derived from the crust. The S isotope data of the pyrites from Heilangou show an overall range from 5.5 to7.8& and an average of 6.7&. The S isotope data in this deposit are similar to those from the deposits in the Jiaodong gold belt. The Pb and S isotope variations are small in the Heilangou gold deposit. The206Pb/204Pb,207Pb/204Pb and208Pb/204Pb ratios are 17.4653-17.5958, 15.5105-15.5746 and 38.0749-38.4361, respectively. These data plot between the lower crust and the orogenic belt. The Pb isotope data in the Heilangou gold deposit are similar to those in the Linglong gold deposit. From the Qixia gold area(the Liukou and Majiayao gold deposits) to the MupingeRushan gold belt(Rushan gold deposit) to the ZhaoeYe gold belt(the Linglong, Sanshandao and Jiaojia gold deposits), the206Pb/204Pb ratios progressively increase. The DeO isotope data obtained from quartz separates suggest that the ore-forming fluid was similar to a mixture of magmatic and meteoric waters. These results suggest that the ore-forming elements were primarily from source fluids derived from the lower crust. | Yutong Yan Na Zhang Shengrong Li Yongsheng Li | 2014 | Geoscience Frontiers2014，5，2： | 22 |
| 4 | Genetic diversity in Chinese modern wheat varieties revealed by microsatellite markers显示文摘Genetic diversity of 1680 modern varieties in Chinese candidate core collections was analyzed at 78 SSR loci by fluorescence detection system. A total of 1336 alleles were detected, of which 1253 alleles could be annotated into 71 loci. For these 71 loci, the alleles ranged from 4 to 44 with an average of 17.6, and the PIC values changed from 0.19 to 0.89 with an average of 0.69. (1) In the three genomes of wheat, the average genetic richness was B>A>D, and the genetic diversity indexes were B>D>A. (2) Among the seven homoeologous groups, the average genetic richness was 2=7>3>4>6>5>1, and the genetic diversity indexes were 7>3>2>4>6>5>1. As a whole, group 7 possessed the highest genetic diversity, while groups 1 and 5 were the lowest. (3) In the 21 wheat chromosomes, 7A, 3B and 2D possessed much higher genetic diversity, while 2A, 1B, 4D, 5D and 1D were the lowest. (4) The highest average genetic diversity index existed in varieties bred in the 1950s, and then it declined continually. However, the change tendency of genetic diversity among decades was not greatly sharp. This was further illustrated by changes of the average genetic distance between varieties. In the 1950s it was the largest (0.731). Since the 1960s, it has decreased gradually (0.711, 0.706, 0.696, 0.695). The genetic base of modern varieties is becoming narrower and narrower. This should be given enough attention by breeders and policy makers. | HAO Chenyang, WANG Lanfen, ZHANG Xueyong, YOU Guangxia, DONG Yushen, JIA Jizeng, LIU Xu, SHANG Xunwu, LIU Sancai & CAO Yongsheng Key Laboratory of Crop Germplasm & Biotechnology, MOA, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China Agronomy College, Gansu Agricultural University, Lanzhou 730070, China | 2006 | Science China(Life Sciences)2006，49，3： | 19 |
| 5 | Type Synthesis of Two-Degrees-of-Freedom Rotational Parallel Mechanism with Two Continuous Rotational Axes显示文摘The two-rotational-degrees-of-freedom(2R) parallel mechanism(PM) with two continuous rotational axes(CRAs) has a simple kinematic model.It is therefore easy to implement trajectory planning,parameter calibration,and motion control,which allows for a variety of application prospects.However,no systematic analysis on structural constraints of the 2R-PM with two CRAs has been performed,and there are only a few types of 2R-PM with two CRAs.Thus,a theory regarding the type synthesis of the 2R-PM with two CRAs is systematically established.First,combining the theories of reciprocal screw and space geometry,the spatial arrangement relationships of the constraint forces applied to the moving platform by the branches are explored,which give the 2R-PM two CRAs.The different distributions of the constraint forces in each branch are also studied.On the basis of the obtained structural constraints of branches,and considering the geometric relationships of constraint forces in each branch,the appropriate kinematic chains are constructed.Through the reasonable configuration of branch kinematic chains corresponding to every structural constraint,a series of new 2R-PMs with two CRAs are finally obtained. | XU Yundou ZHANG Dongsheng WANG Min YAO Jiantao ZHAO Yongsheng | 2016 | Chinese Journal of Mechanical Engineering2016，29，4： | 17 |
| 6 | Quantum entanglement and quantum operation显示文摘It is a simple introduction to quantum entanglement and quantum operations.The authors focus on some applications of quantum entanglement and relations between two-qubit entangled states and unitary operations.It includes remote state preparation by using any pure entangled states,nonlocal operation implementation using entangled states,entanglement capacity of two-qubit gates and two-qubit gates construction. | YE MingYong ZHANG YongSheng GUO GuangCan | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，1： | 16 |
| 7 | Satellite Image Matching Method Based on Deep Convolutional Neural Network显示文摘This article focuses on the first aspect of the album of deep learning: the deep convolutional method. The traditional matching point extraction algorithm typically uses manually designed feature descriptors and the shortest distance between them to match as the matching criterion. The matching result can easily fall into a local extreme value, which causes missing of the partial matching point. Targeting this problem, we introduce a two-channel deep convolutional neural network based on spatial scale convolution, which performs matching pattern learning between images to realize satellite image matching based on a deep convolutional neural network. The experimental results show that the method can extract the richer matching points in the case of heterogeneous, multi-temporal and multi-resolution satellite images, compared with the traditional matching method. In addition, the accuracy of the final matching results can be maintained at above 90%. | Dazhao FAN Yang DONG Yongsheng ZHANG | 2019 | Journal of Geodesy and Geoinformation Science2019，2，2： | 16 |
| 8 | Graphene-based Li-ion hybrid supercapacitors with ultrahigh performance显示文摘有一个成长要求让混合 supercapacitor 系统克服存在产生的精力密度限制电的双层电容器(EDLC ) ,在力量与最小的牺牲导致下 generation-II supercapacitors 密度和周期生活。这里,一个先进基于 graphene 的混合系统,由插入 graphene 的 Li4Ti5O12 (LTO ) 组成合成阳极(G-LTO ) 和三维的多孔的 graphene 蔗糖阴极,为两个都联合 Li 离子电池(精力来源) 和 supercapacitors (力量来源) 的好处的目的被制作了。基于 Graphene 的材料关于混合 supercapacitor 的高效在两个电极起一个重要作用。例如,与 175 | Kai Leng Fan Zhang Long Zhang Tengfei Zhang Yingpeng Wu Yanhong Lu Yi Huang Yongsheng Chen | 2013 | Nano Research2013，6，8： | 15 |
| 9 | Progress and Prospects of Salt Lake Research in China显示文摘China has unique salt lake resources, and they are distributed in the east of Eurasian salt lake subzone of the Northern Hemisphere Salt Lake Zone, mainly concentrated in the regions with modern mean annual precipitation lower than 500 mm. This paper preliminarily reviews the progress made in salt lake research in China for the past 60 years. In the research of Paleoclimate and paleoenvironment from salt lake sediments, a series of salts have been proposed to be indicators of paleoclimate, and have been well accepted by scholars. The chloride-sulfate depositional regions of the west Qaidam and the east Tarim have been revealed to be the drought center of China since the Quaternary, and more than 6 spreading stages of arid climate(salt forming) have been identified. Five pan-lake periods with highstands have been proved to exist during the late Quaternary on the Tibetan Plateau. In mineral resource prospecting and theories of the forming of salt deposits: the atlas(1:2500000) of hydrochemical zoning of salt lakes on the Tibetan Plateau has been compiled for the first time, revealing the zonal distribution and transition from carbonate type to chloride type from south to north and presenting corresponding mineral assemblages for different type of salt lakes; several large continental salt deposits have been discovered and the theory of continental potash deposition has been developed, including the salt deposition in deep basins surrounded by high mountains, the mineral deposition from multistage evolution through chains of moderate or shallow lakes with multilevels, the origin of potassium rich brines in gravel layers, and the forming of potassium deposits through the inheriting from ancient salt deposits, thus establishing the framework of 'Continental Potash Deposition Theory'; several new types of Mg-borate deposits have been discovered, including the ulexite and pinnoite bed in Da Qaidam Lake, Qinghai, the pinnoite and kurnakovite bed in Chagcam Caka, Tibet, the kurnakovite bed in Lake Nyer, and the corresponding model of borate deposition from the cooling and dissolution of boron rich brines was proposed based on principles of geology, physics and chemistry. The anti-floatation-cold crystallization method developed independently has improved the capacity of KCl production to 3 million tons per year for the Qarham, serving the famous brand of potash fertilizer products. One 1.2 million ton K-sulfate production line, the biggest in the world, has been built in Lop Nor, and K-sulfate of about 1.6 million tons was produced in 2015. Supported by the new technology, i.e. brine preparation in winter-cooling-solarization-isolation-lithium deposition from salt gradient solar pond' the highest lithium production base at Zabuye Lake(4421 m), Tibet, has been established, which is the first lithium production base in China that reaches the year production of 5000 tons of lithium carbonate. The concept of Salt lake agriculture(Salt land agriculture) has been established based on the mass growth of Dunaliella and other bacillus-algae and the occurrence of various halophytes in saltmarsh and salt saline-alkali lands, finding a new way to increase arable lands and develop related green industry in salt rich environments. Finally this paper presents some new thoughts for the further research and development on salt science, and the further progress in salt science and technology will facilitate the maturing of the interdisciplinary science 'Salinology'. | ZHENG Mianping ZHANG Yongsheng LIU Xifang NIE Zhen KONG Fanjing QI Wen Jia Qingxian PU Linzhong HOU Xianhua WANG Hailei ZHANG Zhen KONG Weigang LIN Yongjie | 2016 | Acta Geologica Sinica(English Edition)2016，90，4： | 15 |
| 10 | State-owned Enterprises' Outward Investment and the Structural Reform in China显示文摘自从中国在 2001 的 WTO 的就职,中国以从事向外直接的投资在一条陡峭的学习曲线上,并且国有企业(SOEs ) 在这个运动起了一个占优势的作用。我们主张根据它国内改革上的影响被担心,由 SOEs 海外的那项投资是一把双重的剑。投资海外提议机会在中国,而是如此的投资加深结构的改革能也加强一些 SOEs 的垄断位置,它与国内改革的目的不一致。因此,中国关于竞争,所有权和规定加深国内改革是重要的,到从海外投资最大化好处。现在的纸也讨论大楼市场兼容机机构怎么将导致增加的革新。这提供机会让中国公司有效地赶上先进技术在海外市场仍然保持竞争。 | Ligang Song Jidong Yang Yongsheng Zhang | 2011 | China & World Economy2011，19，4： | 13 |
| 11 | Synthesis,characterization,and adsorption performance of Pb(Ⅱ)-imprinted polymer in nano-TiO_2 matrix显示文摘Surface ion-imprinted in combination with sol-gel process was applied to synthesis a new Pb(Ⅱ)-imprinted polymer for selective separation and enrichment of trace Pb(II) from aqueous solution. The prepared material was characterized by using the infrared spectra, X-ray diffractometer, and scanning electron microscopy. The batch experiments were conducted to study the optimal adsorption condition of adsorption trace Pb(Ⅱ) from aqueous solutions on Pb(Ⅱ)-imprinted polymer. The equilibrium was achieved in approximately 4.0 h, and the experimental kinetic data were fitted the pseudo second-order model better. The maximum adsorption capacity was 22.7 mg/g, and the Langmuir equation fitted the adsorption isotherm data. The results of selectivity experiment showed that selectively adsorbed rate of Pb(Ⅱ) on Pb(Ⅱ)-imprinted polymer was higher than all other studied ions. Desorption conditions of the adsorbed Pb(Ⅱ) from the Pb(Ⅱ)-imprinted polymer were also studied in batch experiments. The prepared Pb(Ⅱ)-imprinted polymer was shown to be promising for the separation and enrichment of trace Pb(Ⅱ) from water samples. The adsorption and desorption mechanisms were proposed. | LI Chunxiang GAO Jie PAN Jianming ZHANG Zulei YAN Yongsheng | 2009 | Journal of Environmental Sciences2009，21，12： | 12 |
| 12 | Regional Distribution and Prospects of Potash in China显示文摘中国被几小大陆人块(cratons ) 的合并形成,微,在不同 paleoclimatic 背景的块和 orogenic 带。它可以与另外的大陆人块被相关,但是有它的自己的特定的特征;因此中国的水兵和大陆人的构造环境盐的盆和盐,和钾碱,形成环境有一些特定的特征:部件材料的盐,形成的进程和差异的盐形成,在盐的差别,形成的年龄,移植和集中的多重阶段,以及海洋的盐的盆的小尺寸和在丰富的液体矿物质资源的迟了的阶段和出现的盐的盆的大变化。构造地下室的性质在钾碱盆的形成上施加了关键控制效果。稳定的构造区域为在伪,稳定的区域,和伪的钾碱集中是有利的,并且伪马厩区域在一个本地稳定的构造区域为盐集中和钾碱形成是有利的。大多数中国的主要的古老的盐的盆发生在伪, cratons (大陆人块) ;特别所有海洋的盐的盆与前寒武纪的地下室发生在大陆人块。这些区域是为钾碱搜索的关键的。最相对大,可溶的盐扔的规模在相对稳定的大陆人原子核被开发。根据中国是咸的构造领域的特征,形成盆被定位,诺思中国, Yangtze 和 Tarim, Qaidam 盐 minerogenetic 领域和北 Qiangtang,西方的云南盐 minerogenetic 带可以被区分。他们的盐和钾碱前景将独立被讨论。 | ZHENG Mianping ZHANG Yongsheng YUAN Heran LIU Xifang CHEN Wenxi LI Jinsuo | 2011 | Acta Geologica Sinica(English Edition)2011，85，1： | 12 |
| 13 | Nonlinear optical properties of graphene-based materials显示文摘Graphene,a two-dimensional carbon atom sheet,has attracted tremendous attention and research interest because of its exceptional physical properties.Graphene has high mobility and optical transparency,in addition to flexibility,robustness and environmental stability.The main focus so far has been on fundamental physics and electronic devices.However,because the linear dispersion of the Dirac electrons enables ultrawideband tunability,we believe its true potential lies in photonics and optoelectronics.In this review,we introduce recent advances in the nonlinear optical properties of graphene-based materials.The rise of graphene in nonlinear optics is shown by several recent results,ranging from saturable absorbers and the four-wave mixing effect to giant two-photon absorption,reverse saturable absorption and optical limiting.The relevant forms of the graphene-based materials include pure graphene,graphene oxide and graphene hybrids. | LIU ZhiBo ZHANG XiaoLiang YAN XiaoQing CHEN YongSheng TIAN JianGuo | 2012 | Chinese Science Bulletin2012，57，23： | 10 |
| 14 | NASICON-structured Na3.1Zr1.95Mg0.05Si2PO12 solid electrolyte for solid-state sodium batteries显示文摘Using stable inorganic solid electrolyte to replace organic liquid electrolyte could significantly reduce potential safety risks of rechargeable batteries. Na-superionic conductor(NASICON)-structured solid electrolyte is one of the most promising sodium solid electrolytes and can be employed in solid-state sodium batteries. In this work, a NASICONstructured solid electrolyte Na_(3.1)Zr_(1.95)Mg_(0.05)Si_2PO_(12) was synthesized through a facile solid-state reaction, yielding high sodium-ionic conductivity of 1.33×10^(-3) S·cm^(-1) at room temperature. The results indicate that Mg^(2+)is a suitable and economical substitution ion to replace Zr^(4+), and this synthesis route can be scaled up for powder preparation with low cost. In addition to electrolyte material preparation, solid-state batteries with Na_(3.1)Zr_(1.95)Mg_(0.05)Si_2PO_(12) as electrolyte were assembled. A specific capacity of 57.9 mAh·g^(-1) is maintained after 100 cycles under a current density of 0.5 C rate at room temperature. The favorable cycling performance of the solid-state battery suggests that Na_(3.1)Zr_(1.95)Mg_(0.05)Si_2PO_(12) is an ideal electrolyte candidate for solid-state sodium batteries. | Jing Yang HongLi Wan ZhiHua Zhang GaoZhan Liu XiaoXiong Xu YongSheng Hu Xia-Yin Yao | 2018 | Rare Metals2018，37，6： | 10 |
| 15 | Laboratory tests and numerical simulations of brittle marble and squeezing schist at Jinping II hydropower station,China显示文摘Four 16.7 km-long tunnels with diameters ranging from 12.4 to 14.6 m are now under construction at Jinping II hydropower station along the Yalong River.The tunnels pass through Triassic rocks below Jinping Mountain.The tunnels are characterized with high overburden,long alignment and complex geological conditions.Brittle failure in marble and squeezing in schist are the primary problems in tunnelling.This paper introduces the studies of laboratory tests on Jinping II marble as well as numerical prediction of excavation damaged zone (EDZ) of tunnel section in brittle marble and determination of reinforced concrete lining thickness for restraining time-dependent deformation in the schist tunnel section.Laboratory tests indicate that Jinping II marble presents a complex brittle-ductile-plastic transition behavior of post-peak response with increasing confining pressure.Such behavior can be described numerically with the Hoek-Brown model.The EDZ was calibrated and predicted using both fast Lagrangian analysis of continua (FLAC) and particle flow code (PFC).The predicted result of EDZ in sections with different qualities of rock mass under various overburden pressures is quite helpful in understanding EDZ characterization and support design.A power-law creep model was used to support the lining design,especially in determining the lining thickness.Field convergence measurement data over 19 months were used to calibrate the creep model properties,followed by a sensibility analysis of reinforced concrete lining thickness that was launched to present the maximum lining compressive stress. | Chunsheng Zhang,Weijiang Chu,Ning Liu,Yongsheng Zhu,Jing Hou East China Investigation and Design Institute,China Hydropower Engineering Consulting Group Co.,Hangzhou,310014,China | 2011 | Journal of Rock Mechanics and Geotechnical Engineering2011，3，1： | 10 |
| 16 | Mechanical and dielectric properties of porous and wave-transparent Si3N4–Si3N4 composite ceramics fabricated by 3D printing combined with chemical vapor infiltration显示文摘Porous Si3N4–Si3N4 composite ceramics were fabricated by 3D printing combined with low-pressure chemical vapor infiltration(CVI).This technique could effectively improve the designability of porous Si3N4 ceramics and optimize the mechanical and dielectric properties.The effects of process parameters including the deposition time and heat treatment on the microstructure and properties of porous Si3N4–Si3N4 composite ceramics were studied.The study highlights following:When CVI processing time was increased from 0 to 12 h,the porosity decreased from68.65%to 26.07%and the density increased from 0.99 to 2.02 g/cm3.At the same time,the dielectric constant gradually increased from 1.72 to 3.60;however,the dielectric loss always remained less than0.01,indicating the excellent electromagnetic(EM)wave-transparent performance of porous Si3N4–Si3N4 composite ceramics.The maximum flexural strength of 47±2 MPa was achieved when the deposition time attained 6 h.After heat treatment,the porosity increased from 26.07%to 36.02%and the dielectric constant got a slight increase from 3.60 to 3.70 with the dielectric loss still maintaining lower than 0.01.It has been demonstrated that the porous Si3N4–Si3N4 composite ceramics are a promising structural and EM wave-transparent material suitable for high temperature service. | Zanlin CHENG Fang YE Yongsheng LIU Tianlu QIAO Jianping LI Hailong QIN Laifei CHENG Litong ZHANG | 2019 | Journal of Advanced Ceramics2019，8，3： | 10 |
| 17 | Trace elemental records of short-lived heating during exhumation of the CCSD eclogites显示文摘Trace element compositions of garnet, omphacite and apatite in ultrahigh-pressure eclogites from the main hole of the Chinese Continental Scientific Drilling (CCSD) project were in situ analyzed by the LA-ICP-MS method. Although both garnet and omphacite have homogeneous major element composi-tions, their trace elements show zonations from core to rim in rare earth elements. In particular, middle rare earth elements in the garnet, heavy rare earth elements in the apatite and all rare earth elements in the omphacite increase from core to rim, respectively. Based on dependence of partition coefficients on temperature and pressure in these minerals, we suggest that the trace elemental zonations in these minerals may record a short-lived heating event during exhumation. | ZONG KeQing LIU YongSheng LIU XiaoMing ZHANG BinHui | 2007 | Chinese Science Bulletin2007，52，6： | 9 |
| 18 | Mercury adsorption characteristics of HBr-modified fly ash in an entrained-flow reactor显示文摘In this study, the mercury adsorption characteristics of HBr-modified fly ash in an entrained-flow reactor were investigated through thermal decomposition methods. The results show that the mercury adsorption performance of the HBr-modified fly ash was enhanced significantly. The mercury species adsorbed by unmodified fly ash were Hg Cl2,Hg S and Hg O. The mercury adsorbed by HBr-modified fly ash, in the entrained-flow reactor,existed in two forms, Hg Br2 and Hg O, and the HBr was the dominant factor promoting oxidation of elemental mercury in the entrained-flow reactor. In the current study, the concentration of Hg Br2 and Hg O in ash from the fine ash vessel was 4.6 times greater than for ash from the coarse ash vessel. The fine ash had better mercury adsorption performance than coarse ash, which is most likely due to the higher specific surface area and longer residence time. | Yongsheng Zhang Lilin Zhao Ruitao Guo Na Song Jiawei Wang Yan Cao William Orndorff Wei-ping Pan | 2015 | Journal of Environmental Sciences2015，27，7： | 9 |
| 19 | The constraints of strain partitioning and geochronology in Luonan-Luanchuan tectonic belts on Qinling orogenic belt显示文摘The Luonan-Luanchuan tectonic belt lies between the North China Block and Qinling Mountains, in- cluding the Luonan-Luanchuan fault zone and the strong deformation zone to the north of the fault. The ductile shear zone, imbricate brittle fault and duplex structure in the fault zone now are the expression of the same tectonic event in different depth. Such lineation structure exists in the tectonic belts as mineral lineation, elongation lineation, crenulation lineation, sheath folds and so on, indicating NE-directed plate motion. Fold axes and thrusts in the strong deformation zone are inclined to the Luonan-Luanchuan fault zone at small angles. The structures with different natures show a regular pattern, produced during oblique convergence of plates. The convergence factors are as follows:The direction of plate convergence is 22°, 31° and the angle between the plate convergence direction and plate boundary is 73°, 82° respectively in the west and east segment. The Luonan-Luanchuan tectonic belt was deformed strongly in 372 Ma, resulted from Erlangping back-arc ocean basin subduction sin- istrally and obliquely to North China Block during the collision of North China Block and South China Block. | SONG ChuanZhong ZHANG GuoWei WANG YongSheng LI JiaHao CHEN ZeChao CAI ZhiChuan | 2009 | Science China Earth Sciences2009，52，3： | 9 |
| 20 | Removal of total cyanide in coking wastewater during a coagulation process: Significance of organic polymers显示文摘Whether a cationic organic polymer can remove more total cyanide(TCN) than a non-ionic organic polymer during the same flocculation system has not been reported previously. In this study, the effects of organic polymers with different charge density on the removal mechanisms of TCN in coking wastewater are investigated by polyferric sulfate(PFS) with a cationic organic polymer(PFS-C) or a non-ionic polymer(PFS-N). The coagulation experiments results show that residual concentrations of TCN(Fe(CN)3-6) after PFS-C flocculation(TCN < 0.2 mg/L) are much lower than that after PFS-N precipitation. This can be attributed to the different TCN removal mechanisms of the individual organic polymers. To investigate the roles of organic polymers, physical and structural characteristics of the flocs are analyzed by FT-IR, XPS, TEM and XRD. Owing to the presence of N+in PFS-C, Fe(CN)3-6 and negative flocs(Fe(CN)3-6adsorbed on ferric hydroxides) can be removed via charge neutralization and electrostatic patch flocculation by the cationic organic polymer. However, non-ionic N in PFS-N barely reacts with cyanides through sweeping or bridging, which indicates that the non-ionic polymer has little influence on TCN removal. | Jian Shen He Zhao Hongbin Cao Yi Zhang Yongsheng Chen | 2014 | Journal of Environmental Sciences2014，26，2： | 9 |
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