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| 1 | Micro-structural evolution and their effects on physical properties in different types of tectonically deformed coals显示文摘The macromolecular structure of tectonically deformed coals(TDC)may be determined by the deformation mechanisms of coal.Alterations of the macromolecular structure change the pore structure of TDC and thereby impact physical properties such as porosity and permeability.This study focuses on structure and properties of TDC from the Huaibei and Huainan coal mining areas of southern North China.Relationships between the macromolecular structure and the pore structure of TDC were analyzed using techniques such as X-ray diffraction,high-resolution transmission electron microcopy,and the low-temperature nitrogen adsorption.The results indicated that the directional stress condition can cause the arrangement of basic structural units(BSU)more serious and closer.And,the orientation is stronger in ductile deformed coal than in brittle deformed coal.Tectonic deformation directly influences the macromolecular structure of coal and consequently results in dynamic metamorphism.Because the size of BSU in brittle deformed coal increases more slowly than in ductile deformed coal,frictional heating and stress-chemistry of shearing areas might play a more important role,locally altering coal structure under stress,in brittle deformed coal.Strain energy is more significant in increasing the ductile deformation of coal.Furthermore,mesopores account for larger percentage of the nano-scale pore volume in brittle deformed coals,while mesopores volume in ductile deformed coal diminishes rapidly along with an increase in the proportion of micropores and sub-micropores.This research also approved that the deformations of macromolecular structures change nano-scale pore structures,which are very important for gas adsorption and pervasion space for gas.Therefore,the exploration and development potential of coal bed methane is promising for reservoirs that are subjected to a certain degree of brittle deformation(such as schistose structure coal,mortar structure coal and cataclastic structure coal).It also holds promise for TDC resulting from wrinkle structure coal of low ductile deformation and later superimposed by brittle deformation.Other kinds of TDC suffering from strong brittle-ductile and ductile deformation,such as scale structure coal and mylonitic structure coal,are difficult problems to resolve. | Yiwen Ju Kray Luxbacher Xiaoshi Li Guochang Wang Zhifeng Yan Mingming Wei Liye Yu | 2014 | International Journal of Coal Science & Technology2014，1，3： | 43 |
| 2 | S1P1 receptor inhibits kidney epithelial mesenchymal transition triggered by ischemia/ reperfusion injury via the PI3K/Akt pathway显示文摘 | Weina Wang Aimei Wang Guochang Luo Fengqiao Ma Xiaoming Wei Yongyi Bi | 2018 | Acta Biochimica et Biophysica Sinica2018，50，7： | 5 |
| 3 | China organic-rich shale geologic features and special shale gas production issues显示文摘The depositional environment of organic-rich shale and the related tectonic evolution in China are rather different from those in North America.In China,organic-rich shale is not only deposited in marine environment,but also in non-marine environment:marine-continental transitional environment and lacustrine environment.Through analyzing large amount of outcrops and well cores,the geologic features of organic-rich shale,including mineral composition,organic matter richness and type,and lithology stratigraphy,were analyzed,indicating very special characteristics.Meanwhile,the more complex and active tectonic movements in China lead to strong deformation and erosion of organic-rich shale,well-development of fractures and faults,and higher thermal maturity and serious heterogeneity.Co-existence of shale gas,tight sand gas,and coal bed methane(CBM)proposes a new topic:whether it is possible to co-produce these gases to reduce cost.Based on the geologic features,the primary production issues of shale gas in China were discussed with suggestions. | Yiwen Ju Guochang Wang Hongling Bu Qingguang Li Zhifeng Yan | 2014 | Journal of Rock Mechanics and Geotechnical Engineering2014，6，3： | 5 |
| 4 | Petrogenesis of the Early Cretaceous Tiantangshan A-type Granite in northwestern Guangdong province, SE China and tectonic implications显示文摘1 Introduction During the late Mesozoic times,the SE China is characterized by extensive magmatism and mineralization.The widely distributed granitoids with different(I-,S-and A-)types have been inferred to be closely related to the large-scale polymetallic mineralization.The Nanling tungsten-tin polymetallic belt is endowed with | JIA Ruya WANG Guochang GENG Lin ZHANG Zhihui JIA Hongxiang | 2017 | Acta Geologica Sinica(English Edition)2017，91，S1： | 2 |
| 5 | On Developing Study Motivation in English Language Teaching显示文摘 | Guochang Wang Helan Zhao | 2005 | Sino-US English Teaching2005，2，4： | 2 |
| 6 | Research progress of semiconductive shielding layer of HVDC cable显示文摘As an indispensable part of high-voltage direct current(HVDC)cable,the semiconductive shielding layer plays the role of uniforming electric field in the cable.However,cable shielding materials>35 kV mainly rely on foreign imports in China,which belongs to the technical weak issues in the field of electrical materials.At present,there are few systematic reports on semiconductive shielding material of HVDC cable.In the work,the mechanisms of charge conduction and thermal conduction of semiconductive material have been introduced.Effect of raw material,carbon black content and the second conductive filler on the resistance characteristics of the semiconductive layer,the charge accumulation characteristics of the insulating layer and the interface characteristics have been studied.A kind of semiconductive layer as a high voltage terminal charge emission method has been proposed to study charge emission from the semiconducting layer to the insulation layer.This work can provide theoretical guidance for the research of semiconductive shielding materials. | Yanhui Wei Wang Han Guochang Li Qingquan Lei Mingli Fu Chuncheng Hao Guanjun Zhang | 2020 | High Voltage2020，5，1： | 2 |
| 7 | Study of aquatic chemical characteristic in some bays along the coastal region of Zhejiang Province显示文摘In this paper,the aquatic chemical characteristics in the Hangzhou Bay,Xiangshan Bay and Leqing Bay along the coastal region of Zhejiang Province are discussed . Results show that the seasonal variations of chemical elements are obvious. The distribution of silicate in Hangzhou Bay and contents of dissolved oxygen and nutrient in the Xiangshan Bay are found to be unusual in winter. Correlations among the elements are complex. The content of nutrient in the Hangzhou Bay is higher than that in Xiangshan Bay and the content of nutrient in the Xiangshan Bay is higher than that in the Leqing Bay . The variation of the ratio of N/P is obvious. This reflects the aquatic chemical characteristics in the bay. Finally, this paper also discusses the reason why the aquatic chemical characteristics in the bays are unusual. | Wang Yuheng,Dong Henglin and Jiang Guochang The Second Institute of Oceanography,State Oceanic Administration ,Hangzhou,China | 1990 | Acta Oceanologica Sinica1990，9，4： | 2 |
| 8 | Boosting faradaic efficiency of CO_(2)electroreduction to CO for Fe-NC single-site catalysts by stabilizing Fe^(3+)sites via F-doping显示文摘The atomically dispersed Fe^(3+)sites of Fe-N-C single-site catalysts(SSCs)are demonstrated as the active sites for CO_(2)electroreduction(CO_(2)RR)to CO but suffer from the reduction to Fe^(2+)at~−0.5 V,accompanied by the drop of CO faradaic efficiency(FECO)and deterioration of partial current(JCO).Herein,we report the construction of F-doped Fe-N-C SSCs and the electron-withdrawing character of fluorine could stabilize Fe3+sites,which promotes the FECO from the volcano-like highest value(88.2%@−0.40 V)to the high plateau(>88.5%@−0.40-−0.60 V),with a much-increased JCO(from 3.24 to 11.23 mA·cm^(−2)).The enhancement is ascribed to the thermodynamically facilitated CO_(2)RR and suppressed competing hydrogen evolution reaction,as well as the kinetically increased electroactive surface area and improved charge transfer,due to the stabilized Fe^(3+)sites and enriched defects by fluorine doping.This finding provides an efficient strategy to enhance the CO_(2)RR performance of Fe-N-C SSCs by stabilizing Fe^(3+). | Yiqun Chen Guochang Li Yu Zeng Lijie Yan Xizhang Wang Lijun Yang Qiang Wu Zheng Hu | 2022 | Nano Research2022，15，9： | 2 |
| 9 | Organic-rich Mar- cellus Shale lithofacies modeling and distribution pattern analysis in the Appalachian Basin显示文摘 | WANG Guochang TIMOTHY R C | 2013 | AAPG Bulletin2013，97，12： | 1 |
| 10 | Nano-Geology and Unconventional Oil and Gas显示文摘Numerous Striking achievements have been made in micro and macro geology after the development for hundreds of years.Two trends branches of geology are divided into microcosmic nano-geology and macroeconomic astrono-geology with the enormous technology progress.The unique characteristics related to the nano-particles and nano-pores may be significant | JU Yiwen LU Shuangfang SUN Yan TAN Fengqi WANG Guochang HAN Ku BAO Yuan LI Qingguang | 2015 | Acta Geologica Sinica(English Edition)2015，89，A01： | 1 |
| 11 | Functional k-means inverse regression显示文摘 | Guochang Wang Nan Lin Baoxue Zhang | 2014 | Computational Statistics & Data Analysis2014，70，2： | 1 |
| 12 | Hydrothermal synthesis of large-sized hydroxyapatite whiskers regulated by glutamic acid in solutions with low supersaturation of precipitation显示文摘 | Chengfeng Li Shuguang Liu Guochang Li Jiahai bai Weiwei Wang Qingyang Du | 2010 | Advanced Powder Technology2010，，4： | 1 |
| 13 | A novel inflatable rings supported design and buoyancy-weight balance deformation analysis of stratosphere airships显示文摘Owing to the unique advantages in flight altitude,dwelling time and wide coverage area,stratospheric airships provide permanent monitoring and surveillance for both civil and military applications.Here we propose a semi-rigid stratosphere airship design with circumferential high-pressure inflatable rings and a longitudinal carbon fiber skeleton supported inside.We perform numerical simulations to analyze the deformation characteristics during the whole ascending and descending process.An equivalent internal gradient pressure model of helium is established based on the capsule shape and buoyancy-weight equilibrium conditions.The implicit dynamic method is used to deal with the large deformation of the airship capsule under a low negative pressure condition.Deformation and load-bearing performance of the airship capsule,inflatable ring,skeleton,and suspension line are obtained under different working conditions.The results show that the airship,supported with the inflatable rings and the suspension lines,effectively maintains the shape and ensures the stiffness during the ascending,dwelling,and descending stages,especially suffering from negative pressure. | Weinan GAO Ji ZHANG Teng MA Guochang LIN Yuanpeng LIU Changguo WANG Huifeng TAN | 2022 | Chinese Journal of Aeronautics2022，35，1： | 1 |
| 14 | DISTRIBUTIONS AND HYDROLOGICAL CHARACTERISTICS OF TROPICAL CYCLONE RAINSTORMS AND FLOODS IN CHINA显示文摘Regional distribution of the rainstorms and floods caused and affected by tropical cyclones are described and the geographicla divisions of China are also given in this paper. The hydrological characteristics of tropical cyclone rainstorms and floods are discussed and compared with that on non-tropical cyclones. | Wang Jiaqi Shen Guochang Geng Leihua Gu Wenyan Yao Huiming(Nanjiang Institute of Hydrology and Water Resources, Nanjing 210244People’s Republic of China) | 1996 | Journal of Geographical Sciences1996，6，3： | 1 |
| 15 | A New Parameter as an Indicator of the Degree of Deformation of Coals显示文摘The deformation of coal is effected by thermal effect, pressures and tectonic stress, and the tectonic stress is the principal influence factor. However, the proposition of a useful quantitative index that responds to the degree of deformation of coals quantitatively or semi-quantitatively has been a long-debated issue. The vitrinite reflectance ellipsoid, that is, the reflectance indication surface(RIS) ellipsoid is considered to be a strain ellipsoid that reflects the sum of the strain increment caused by stress in the process of coalification. It has been used to describe the degree of deformation of the coal, but the effect of the anisotropy on the RIS ellipsoid has not yet been considered with regards to non-structural factors. In this paper, Wei's parameter(ε) is proposed to express the deformation degree of the strain ellipsoid based on considering the combined influence of thermal effect, pressure and tectonic stress. The equation is as follows: ε=√[(ε_1-ε_0)~2+(ε_2-ε_0)~2+(ε_3-ε_0)~2]/3, where ε_1=lnR_(max), ε_2=lnR_(int), ε_3=lnR_(min), and ε_0=(ε_1+ε_2+ε_3)/3. Wei's parameter represents the distance from the surface to the spindle of the RIS logarithm ellipsoid; thus, the degree of deformation of the strain ellipsoid is indicated quantitatively. The formula itself, meanwhile, represents the absolute value of the degree of relative deformation and is consequently suitable for any type of deformation of the strain ellipsoid. Wei's parameter makes it possible to compare degrees of deformation among different deformation types of the strain ellipsoid. This equation has been tested in four types of coal: highly metamorphic but weakly deformed coal of the southern Qinshui Basin, highly metamorphic and strongly deformed coal from the Tianhushan coal mining area of Fujian, and medium metamorphic and weakly or strongly deformed coal from the Huaibei Coalfield. The results of Wei's parameters are consistent with the actual deformation degrees of the coal reservoirs determined by other methods, which supports the effectiveness of this method. In addition, Wei's parameter is an important complement to the indicators of the degrees of deformation of coals, which possess certain theoretical significance and practical values. | Mingming Wei Yiwen Ju Quanlin Hou Guochang Wang Liye Yu Wenjing Zhang Xiaoshi Li | 2017 | Journal of Earth Science2017，28，2： | 1 |
| 16 | Orgainc-rich Marcellus shale litho facies modeling and distribution pattern analysis in the Appla- chian Basin显示文摘 | Wang Guochang Carr T R | 2013 | AAPG Bulletin2013，97，21： | 1 |
| 17 | SYNTHESIS AND CHARACTERIZATION OF N-(1-NAPHTHYL) SUCCINIMIDE显示文摘 | LI Hexian YANG Hailong LIU Kun WANG Ying YUAN Jialong WANG Guochang | 2007 | Chinese Journal of Reactive Polymers2007，16，1： | 0 |
| 18 | FLUORESCENCE STUDIES ON MORPHOLOGICAL CHANGE OF ST/DVB CROSSLINKED GELS DURING CHLOROMETHYLATION显示文摘The morphological change of St/DVB crosslinked gels during chloromethylation wasstudied by fluorescence spectroscopy using St/DVB crosslinked and hypercrosslinked gels as controlsamples. It has been found that with increase of chlorine content, the excimer emission band (~325nm)approaches to vanish, while the intensity of multi-ring aggregate emission band (~420nm) quicklyreaches a maximum, and then decreases sharply accompanied by appearance ofa new broad bandcentred at ca 488nm which roughly coincides with the typical emission band of hypercrossllinkedSt/DVB gels. Mearwhile, the result of IR measurement suggests that methylene bridge between phenylrings forms and increases with chloromethylation process. These results are explained in terms ofaside reaction of post-crosslinking, which densifies the loosely crosslinked networks and undoes thedensely entangled microgel nuclei. As a result, the morphology of the crosslinked gels becom es morehomogeneous with chloromethylation. | ZHANG Jixiang LI Hexian** WANG Guochang WANG Lin WANG Ying HE Binglin State Key Laboratory of Functional Polymer Materials For Adsorption and Separation and Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China | 2002 | Chinese Journal of Reactive Polymers2002，11，2： | 0 |
| 19 | Nonmacrocyclic Iron(II)Soluble Redox Mediators Leading to High-Rate Li-O_(2)Battery显示文摘The lithium-oxygen(Li-O_(2))battery is highly promising but suffers from poor cycling life,especially at high rates;hence,the need for high-efficient accelerating agents is crucial.Recently macrocyclic Fe-based redox mediators,such as iron(II)phthalocyanine(FePc)and heme,have been developed and anticipated to be ideal due to their bifunctional charge and superoxide shuttling capabilities.However,they still operate far below expectations,which could result from the low concentrations in electrolyte due to the strongπ-πinteraction at carbon cathode.Herein,the authors report a new type of nonmacrocyclic Fe-based redox mediators,iron(II)acetylacetonate[Fe(acac)2]and iron(II)glycinate[Fe(gly)2],which have weakπ-πinteraction with the carbon cathode,thus,remain at high concentrations in the electrolyte.The Fe(gly)2@Li-O_(2)battery reaches a long life of 321 cycles at 0.5 A g^(−1),which is much superior to the counterpart with the typical macrocyclic FePc,and particularly exhibits a long life of 167 cycles at 2.0 A g^(−1)and 136 cycles at ultrahigh 5.0 A g^(−1).This study demonstrates an efficient strategy to achieve a high-rate performance of Li-O_(2)batteries by developing nonmacrocyclic Fe-based redox mediators with high-efficient electron and superoxide shuttling. | Baoxing Wang Xiao Wang Xueyi Cheng Jing Zhang Minglei Yan Guochang Li Lijun Yang Qiang Wu Xizhang Wang Zheng Hu | 2021 | CCS Chemistry2021，3，5： | 0 |
| 20 | SYNTHESIS AND FLUORESCENCE STUDY OF St/DVB COPOLYMERS LABELLED WITH PYRENE GROUPS显示文摘SYNTHESISANDFLUORESCENCESTUDYOFSt/DVBCOPOLYMERSLABELLEDWITHPYRENEGROUPSWangGuochang;LiangYuanfong;GaoHuan;LiangLijun;HeBingli... | Wang Guochang Liang Yuanfong Gao Huan Liang Lijun He Binglin (State Key Laboratory of Functional Polymer Materials for Adsorption and Separationand Institute of Polymer Chemistry, Nankai University, Tianjin 300071 )Chen liusheng Du Jinhuan (Institute | 1995 | Chinese Journal of Reactive Polymers1995，4，1： | 0 |
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