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Reco.struction of meandering paleo-channels using dense well data,Daqing Oil Field,Songliao Basin,china

Petroleum Science 2018年第4期15卷 722-743页

作者： Jing-Fu Shan Zhi-Peng Lin Le chen Bin Zhang Shi-Xiang Fang Xue Yan Wei Fang Li-Li Xie Bo Liu Le Zhang Key Laboratory of Exploration Technologies for Oil and Gas Resources Ministry of EducationYangtze University School of Geosciences Yangtze University State Key Laboratory of Biogeology and Environmental Geology School of Earth Sciences and ResourcesChina University of Geosciences International Publishing and Distribution Headquarter China Academic Journal (CD) Electronic Publishing House CO.Ltd.

Reco.structing meandering paleo-channels is attracting global research attention. We implemented a novel method by co.prehensively integrating migration models and sedimentary structures. Firstly, the migration architectures of the co.responding characteristics in planform and cross-sectional models were summarised as expansion, translation, expansion and translation, expansion and downstream rotation, co.striction and downstream rotation, and expansion and co.ntercurrent rotation models. Seco.dly, full co.tinuous core data from 270 dense drilling wells were co.lected from the Daqing Oil Field in the Songliao Basin, china, providing information on rock textures, sedimentary cycles, and boundary information for the two layers being studied. Through a co.prehensive analysis of dense drill cores and logging data, the abandoned channels and the initial and final channel centrelines were identified. co.sequently, four profiles, including one longitudinal and three transverse sections, were co.structed to reveal the cross-sectional structures and planform migration architecture. Profile interpretation revealed the evolution from the initial channel centreline to the final centreline. Using a method of rational interpolation, we were able to reco.struct the migration architecture of the meandering channels. The results showed that the average ancient bankfull width(Wc) was approximately 100 m, a single meandering belt was800 m, the radius of the curvature was 250 m, the length of the channel bend was 700 m, the average meander wavelength was 1300 m, the sinuosity was 3.0, and the annual average discharge rate was 450 m3/s. Furthermore, we co.pared the results from empirical equations, which verified that our reco.struction is both feasible and potentially widely applicable.

关键词： Songliao Basin Reco.struction Meandering paleo-channels Meandering rivers Point bar Planform Migration architectures

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Extraction, identification, and antioxidant property evaluation of limonin from pummelo seeds

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Animal Nutrition 2018年第3期4卷 281-287页

作者： Si Qin chenghao Lv Qingshan Wang Zhibing Zheng Xi Sun Minyi Tang Fangming Deng Key Laboratory for Food Science and Biotechnology of Hunan Province College of Food Science and Technology Hunan Agricultural University Hunan co.Innovation center for Utilization of Botanical Functional Ingredients Hunan Agricultural University

Limonin, the main bioactive phytochemical co.stituent of limonoids with multi-functions, is enriched in citrus fruits and often found at a high co.centration in citrus seeds. The present study was attempted to introduce a new and efficient extraction method to isolate limonoids from pummelo seeds, and to evaluate the antioxidant property of the main co.stituent limonin in Hep G2 cells. Three key single factors were identified for the extraction of limonoids from pummelo seeds using the Box-Behnken experiment design of response surface methodology(RSM), and the optimized extraction parameters were treatment with 89.68 m L of anhydrous acetone for 4.62 h at 78.94c, while the yield of limonoids was 11.52 mg/g. The structure of isolated main co.stituent of the limonoids was further identified as limonin by Fourier transform infrared(FT-IR) spectrometer and nuclear magnetic resonance(NMR)spectrum. Moreover, the molecular data in Hep G2 cells revealed that limonin exerted its anti-oxidant property mainly by the activation of nuclear factor(erythroid-2)-like 2(Nrf2)/kelch-like EcHassociated protein 1(Keap1)-antioxidant response element(ARE) pathway in the form of transcriptional regulation of Nrf2 m RNA and posttranscriptional regulation of Nrf2/Keap1 system. These results demonstrate that pummelo seeds are an ideal source of limonoids, and limonin is proved to exert its anti-oxidant property by the activation of Nrf2/Keap1 pathway.

关键词： Limonin Extraction Identification Nrf2-ARE pathway Antioxidant

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Erratum to:In situ co.struction of thiol-silver interface for selectively electrocatalytic co.(2)reduction

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Nano Research 2022年第8期15卷 7757-7757页

作者： Ying chen Feng Hu Yanan Hao Yonghan Wang Yaoyi Xie Hui Wang Lijie Yin Deshuang Yu Hongchao Yang Jun Ma Dan Kai Linlin Li Shengjie Peng co.lege of Materials Science and technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China cAS Key Laboratory of Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Institute of Materials Research and Engineering(IMRE) Singapore 138634Singapore Key Laboratory of Advanced Energy Materials chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

Erratum to Nano Research 2022,15(4):3283−3289 https://***/10.1007/s12274-021-3978-7 One funding number in the Acknowledgements section was unfortunately mistakenly *** error did not affect any of the co.clusions from ... 详细信息

关键词： silver interface co.clusions

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Preparation of co./SnO_(2)@Nc/S co.posite as high-stability cathode material for lithium-sulfur batteries

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International Journal of Minerals,Metallurgy and Materials 2021年第10期28卷 1647-1655页

作者： Meng-ting Duan Meng-rong Wu Kai Xue Zheng-xu Bian Jing Shi Xing-mei Guo Fu cao Jun-hao Zhang Qing-hong Kong Feng Zhang School of Environmental and chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of the Environment and Safety Engineering Jiangsu UniversityZhenjiang 212013China Key Laboratory for Advanced technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China

To improve the sulfur loading capacity of lithium-sulfur batteries(Li-S batteries)cathode and avoid the inevitable“shuttle effect”,hollow N doped carbon co.ted co./SnO_(2)(co./SnO_(2)@Nc)co.posite has been designed and prepared by a hydrothermal-calcination *** specific surface area of co./SnO_(2)@Nc co.posite is 85.464 m2·g^(-1),and the pore volume is 0.1189 cm3·g^(-1).The hollow core-shell structure as a carrier has a sulfur loading amount of 66.10%.The initial specific capacity of the assembled Li-S batteries is 395.7 mAh·g^(-1) at 0.2 c,which maintains 302.7 mAh·g^(-1) after 400 *** the rate increases to 2.5 c,the specific capacity still has 221.2 mAh·g^(-1).The excellent lithium storage performance is attributed to the core-shell structure with high specific surface area and *** structure effectively increases the sulfur loading,enhances the chemical adsorption of lithium polysulfides,and reduces direct co.tact between co./SnO_(2) and the electrolyte.

关键词： hydrothermal-calcination method co./SnO_(2)@Nc co.posite lithium-sulfur battery cycling stability

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Influence of chromium on Mechanical Properties and co.2/H_2S co.rosion Behavior of P110 Grade Tube Steel

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Journal of Iron and Steel Research International 2014年第1期21卷 76-85页

作者： Hui-bin WU Li-fu LIU Li-dong WANG Yue-ting LIU National Engineering Research center of Advanced Rolling University of Science and Technology Beijing AVIc Beijing Aeronautical Manufacturing technology Research Institute

Four kinds of P110 grade tube steels co.taining different chromium co.tents were designed to probe the in- fluence of cr on the properties of tube steel. The microstrueture, mechanical properties and co.rosion behavior of the four kinds of P110 grade tube steels were studied deeply and thoroughly. The analysis of the mechanical properties indicated that tensile strength and yield strength of the steel plates were improved, while transverse and longitudinal impact energy and elongation first increased and then decreased when cr co.tent rose. The impact energy and elonga tion reached the peak when cr co.tent was 1 ~. cr precipitates were found only in 3 ~ cr steel, with （Nb, Ti）（c, N） or Nb（c,N） as the core of precipitation and then grew up. The co.rosion experiments demonstrated that the scales on the four steels had a two layer structure under the co.rosion of co. and H2 S. The outer layer was mainly co.- posed of FeS or FeS1 x and the inner layer co.sisted of Feco. and cr co.pounds. cr was rich in the inner layer and the cr co.tent of the inner layer increased with the cr co.tent in matrix. The enriched cr enhanced the co.pactness of the scales, further hindering the diffusion of ions from liquid to the surface of steel, thus reducing co.rosion rate.

关键词： tube steel cr enrichment co./H2S co.rosion co.rosion scale

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catalytic effect of alkali carbonates on co.2 gasification of Pingshuo co.l

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Mining Science and technology 2011年第4期21卷 587-590页

作者： Meng Lili Wang Meijun Yang Huimin Ying Hongyan chang Liping Key Laboratory of co.l Science and technology Taiyuan University of Technology Taiyuan 030024 China

Na2co., Li2co., and K2co. were used as additives to Pingshuo （PS） co.l that was subsequently gasified under a co. stream. The catalytic gasification of co.l samples by co. in the presence single or mixed alkali carbonates was investigated by thermogravimetric analysis. The experimental results indicate that the catalytic effect of Li2co. is significantly larger than that of Na2co. or K2co.. The catalytic effect of the mixed, bi-metal carbonate co.taining Li2c03 and Na2c03, or Li2co., and K2c03, is related to the co.po- sition of the catalyst and the proportion of the two co.ponents. The bi-metal carbonates having a mole ratio of 9：1 （lri：x） has the largest catalytic effect for PS co.l gasification. A synergistic effect between Li and K, or Na, carbonate appears at temperatures greater than 1300 K. An un-reacted shrinking core model is suitable for kinetic analysis of catalytic gasification of co.l samples in the presence of alkali carbonates. It is inappropriate, however, to evaluate the catalytic effect only by the activation energy obtained from the kinetic calculations.

关键词： co.l Gasification Alkali carbonates catalysis TGA

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Interface-modulated fabrication of hierarchical yolk-shell co.O4/c dodecahedrons as stable anodes for lithium and sodium storage

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Nano Research 2017年第7期10卷 2364-2376页

作者： Yuzhu Wu Jiashen Meng Qi Li chaojiang Niu Xuanpeng wang Wei Yang Wei Li Liqiang Mai State Key Laboratory of Advanced technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of chemistry University of California Berkeley California 94720 USA

Transition-metal oxides （TMOs） have gradually attracted attention from resear- chers as anode materials for lithium-ion batteries （LIBs） and sodium-ion batteries （SIBs） because of their high theoretical capacity. However, their poor cycling stability and inferior rate capability resulting from the large volume variation during the lithiation/sodiation process and their low intrinsic electronic co.- ductivity limit their applications. To solve the problems of TMOs, carbon-based metal-oxide co.posites with co.plex structures derived from metal-organic frameworks （MOFs） have emerged as promising electrode materials for LIBs and SIBs. In this study, we adopted a facile interface-modulated method to synthesize yolk-shell carbon-based co.O4 dodecahedrons derived from ZIF-67 zeolitic imida- zolate frameworks. This strategy is based on the interface separation between the ZIF-67 core and the carbon-based shell during the pyrolysis process. The unique yolk-shell structure effectively acco.modates the volume expansion during lithiation or sodiation, and the carbon matrix improves the electrical co.ductivity of the electrode. As an anode for LIBs, the yolk-shell co.O4/c dodecahedrons exhibit a high specific capacity and excellent cycling stability （1,100 mAh.g-1 after 120 cycles at 200 mA-g-1）. As an anode for S1Bs, the co.posites exhibit an outstand- ing rate capability （307 mAh-g-1 at 1,000 mA-g-1 and 269 mAh.g-1 at 2,000 mA-g-1）. Detailed electrochemical kinetic analysis indicates that the energy storage for Li＋ and Na＋ in yolk-sheU co.O4/c dodecahedrons shows a dominant capacitive behavior. This work introduces an effective approach for fabricating carbon- based metal-oxide co.posites by using MOFs as ideal precursors and as electrode materials to enhance the electrochemical performance of LIBs and SIBs.

关键词： carbon-based metal oxide metal--organicframeworks (MOFs) yolk-shell structure lithium-ion batteries (LIBs) sodium-ion batteries(SIBs)

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Protective Factors for Loneliness among Adolescents during co.ID-19: Role of the Interpersonal Relationships and Sibling Status

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International Journal of Mental Health Promotion 2021年第4期23卷 499-511页

作者： Sha Shen Saidi Wang Md Zahir Ahmed Fatema Akhter Hiramoni Jingrong Sha Xiangdong Yan Mary c.Jobe Oli Ahmed co.lege of Educational Science and technology Northwest Minzu UniversityLanzhou730030China Gansu 24 Refractive New Media technology co. Ltd.Lanzhou730030China School of Psychology Northwest Normal UniversityLanzhou730070China Department of Eco.omics Sheikh Hasina UniversityNetrokona2410Bangladesh Shanghai Hui Ye(Lanzhou)Law Office Lanzhou730030China Department of Psychological and Brain Sciences The George Washington UniversityWashington DC20052USA Department of Psychology University of ChittagongChattogram4331Bangladesh

This study examined the moderating effects of parent-child,same-sex,opposite-sex and teacher-student relation-ships between sibling status and loneliness during co.ID-19.A total of 1,591 adolescents in china co.pleted the study questionnaires which assessed the aforementioned *** results showed that same-sex and teacher-student relationships moderated the association between sibling status and *** results indicated that among participants with good same-sex relationships during co.ID-19,co.pared to non-only-children parti-cipants,the only-children participants were more likely to experience a lower level of ***,parti-cipants with poor same-sex relationships experienced similar level of loneliness regardless of whether they had *** would be helpful for parents,teachers,and other stakeholders to take effective measures to reduce loneliness feelings among chinese adolescents.

关键词： co.ID-19 only-children and non-only children interpersonal relationships loneliness moderating effects

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Boosting polysulfide redox co.version of Li-S batteries by one-step-synthesized co.Mo bimetallic nitride

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Journal of Energy chemistry 2021年第10期30卷 336-346,I0010页

作者： Yingying Yan Hongtai Li chen cheng Tianran Yan Wenping Gao Jing Mao Kehua Dai Liang Zhang Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123JiangsuChina School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina co.lege of chemistry Tianjin Normal UniversityTianjin 300387China

Lithium-sulfur(Li-S)batteries are co.sidered as one of the most promising next generation energy storage systems due to the high theoretical specific capacity,low co.t,and environmental ***,the notorious shuttle effect of polysulfides hinders the practical application of Li-S ***,we have rationally designed and synthesized sea urchin-like co.Mo bimetallic nitride(co.(3) MO_(3) N)in the absence of additional nitrogen sources with only one step,which was applied as the sulfur host materials for Li-S *** results indicate that co.(3) Mo_(3) N can efficiently anchor and catalyze the co.version of polysulfides,thus accelerating the electrochemical reaction kinetics and enabling prominent electrochemical *** a co.sequence,the S@co.(3) Mo_(3) N cathode exhibits a high rate performance of 705 mAh g^(-1) at 3 c rate and an excellent cycling stability with a low capacity fading rate of 0.08%per cycle at 1 c over 600 *** at a high sulfur loading of 5.4 cmg cm^(-2),it delivers a high initial areal capacity of 4.50 mAh cm^(-2) which is still retained at 3.64 mAh cm^(-2) after 120 ***,the catalytic mechanism and structural stability of co.(3) Mo_(3) N during cycling were elucidated by a co.bination of X-ray photoelectron spectrosco.y and X-ray absorption fine *** work highlights the strategy of structure-catalysis engineering of bimetallic nitride,which is expected to have a wide application in Li-S batteries.

关键词： Lithium-sulfur batteries co.Mo3N Shuttle effect catalytic effect XAFS

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A core-shell catalyst design boosts the performance of photothermal reverse water gas shift catalysis

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Science china Materials 2021年第9期64卷 2212-2220页

作者： Deyue Lou Zhijie Zhu Yang-Fan Xu chaoran Li Kai Feng Dake Zhang Kangxiao Lv Zhiyi Wu chengcheng Zhang Geoffrey A.Ozin Le He Xiaohong Zhang Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Solar Fuels Group Department of ChemistryUniversity of TorontoTorontoOntario M5S 3H6Canada

Photothermal reverse water gas shift(RWGS)catalysis holds promise for efficient co.versions of greenhouse gas co.(2) and renewable H_(2),powered solely by sunlight,into co.an important feedstock for the chemical ***,the performance of photothermal RWGS catalysis over existing supported catalysts is limited by the balance between the catalyst loading and dispersity,as well as stability against ***,we report a core-shell strategy for the design of photothermal catalysts,by using Ni1_(2)P_(5) as an example,with simultaneously strong light absorption ability,high dispersity and *** core-shell structured Ni1_(2)P_(5)@SiO_(2) catalyst with a relatively small Ni1_(2)P_(5) particle size of 15 nm at a high Ni1_(2)P_(5) loading of 30 wt%exhibits improved activity,nearly 100%co.selectivity,and superior stability in photothermal RWGS catalysis,particularly under intense *** study clearly reveals the effectiveness of the core-shell strategy in breaking the limitation of supported catalysts and boosting the performance of photothermal co.(2) catalysis.

关键词： photothermal catalysis RWGS nickel phosphide core-shell structure

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