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Geochemistry and detrital zircon records of the Ruyang-Luoyu groups,southern North China Craton:Provenance,crustal evolution and Paleo-Mesoproterozoic tectonic implications

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Geoscience Frontiers 2020年第2期11卷 679-696页

作者： Xi-Yao Li Sanzhong Li Tong-Shan Wang Yunpeng Dong Xiao-guang Liu shu-Juan Zhao Kun Wang Jiao-Peng Sun Li-Ming dai Yan-Hui Suo Key Lab of Submarine Geosciences and Prospecting Techniques MOEand Institute for Advanced Ocean StudyCollege of Marine GeosciencesOcean University of ChinaQingdao 266100China State Key Laboratory of Continental Dynamics Northwest UniversityXi’an 710069China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China

Paleo-to Mesoproterozoic sedimentary rocks in the southern margin of the North China Craton(NCC)are represented by the Ruyang and Luoyu *** studied the sedimentary rocks from the Yunmengshan and Beidajian formations of the Ruyang Group and the Cuizhuang and Sanjiaotang formations of the Luoyu *** zircon grains from these formations have U–Pb age populations of 3.64–3.31 Ga,2.96–2.86 Ga,2.72–2.59 Ga,2.56–2.47 Ga,2.45–2.0 Ga,1.99–1.85 Ga and 1.84–1.65 *** geochemical features of the sedimentary rocks suggest that some of the sediments were sourced from intermediate to felsic magmatic *** age groups of the detrital zircon are roughly consistent with the tectono-thermal events in the southern margin of the *** Hf isotopic compositions of detrital zircon from the sedimentary rocks in Ruyang and Luoyu groups suggest that significant crustal growth and reworking of the NCC took place during the Neoarchean and early-to mid-Paleoproterozoic,while crustal reworking at the Paleoarchean and late-Paleoproterozoic,and crustal growth at the *** suggest the depositional times of the Ruyang Group and Luoyu Group are constrained to no older than 1.75–1.7 Ga and 1.7–1.65 Ga,*** of late-Paleoproterozoic basins related to the strike slip and extrusion tectonics that cross-cut the NCC during the late Paleoproterozoic(<1.75 Ga),and the late Paleoproterozoic sedimentation once isochronous developed in the southern margin of the NCC through the Taihang region of the interior NCC and linked the Yanshan–Liaoxi regions of the northern NCC.

关键词： Detrital zircon North China craton Proterozoic Tectonics U–Pb ages Hf isotope

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Distribution- and Metabolism-Based Drug Discovery: A Potassium-Competitive Acid Blocker as a Proof of Concept

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Research 2022年第4期2022卷 609-620页

作者： Ming-shu Wang Yi Gong Lin-Sheng Zhuo Xing-Xing Shi Yan-guang Tian Chang-Kang Huang Wei Huang guang-Fu Yang Key Laboratory of Pesticide e Chemical Biology of Ministry of Education International Joint Research Center for Intelligent Biosensor Technology and HealthCollege of ChemistryCentral China Normal UniversityWuhan 430079China Nanjing shuohui Pharmatechnology Co. Ltd.Nanjing 210046China

Conventional methods of drug design require compromise in the form of side effects to achieve sufficient efficacy because targeting drugs to specific organs remains ***,new strategies to design organ-specific drugs that induce little toxicity are *** on characteristic tissue niche-mediated drug distribution(TNMDD)and patterns of drug metabolism into specific intermediates,we propose a strategy of distribution-and metabolism-based drug design(DMBDD);through a physicochemical property-driven distribution optimization cooperated with a well-designed metabolism pathway,SH-337,a candidate potassium-competitive acid blocker(P-CAB),was ***-337 showed specific distribution in the stomach in the long term and was rapidly cleared from the systemic ***,SH-337 exerted a comparable pharmacological effect but a 3.3-fold higher no observed adverse effect level(NOAEL)compared with FDA-approved *** study contributes a proof-of-concept demonstration of DMBDD and provides a new perspective for the development of highly efficient,organ-specific drugs with low toxicity.

关键词： drugs organs Potassium

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MILP Model for Plant-Wide Optimal By-Product Gas Scheduling in Iron and Steel Industry

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Journal of Iron and Steel Research International 2010年第7期17卷 34-37页

作者： KONG Hai-ning QI Er-shi HE shu-guang, LI Gang Management School Tianjin University Tianjin 300072 China

The scheduling of by-product gases in by-product gas system,cogeneration system and production system is *** gas-consuming users are divided into three kinds according to their different characters and then a distribution model is built.A dynamic mixed integer linear programming（MILP）model for multiperiod optimization of by-product gas is performed to optimize by-product gas distribution to achieve total cost *** study shows that 6.2% operation cost is reduced by using the proposed model.

关键词： iron and steel industry MILP by-product gas distribution scheduling

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Calculations of the 3-D neutronics for CH HCSB TBM with 3×3 sub-modules

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核聚变与等离子体物理 2006年第3期26卷 170-175页

作者： ZHANG Guo-shu FENG Kai-ming CHEN Rong-guang YUAN Tao LI Zeng-qiang Southwestern Institute of Physics Chengdu 610041

Using three dimension MCNP code and FENDL2.0 data library, neutronics calculation for a HCSB (helium cooling solid breeder ) TBM ( test blanket module ) with 3×3 sub-modules has been performed. Local tritium breeding ratio (TBR) of 0.907, total tritium generation rate of 0.0175 g· d-1, peak power density of 9.27MW· m-3 and total power deposit of 0.422MW·m-3 are obtained under neutron wall loading of 0.78MW·m-2 and duty factor of 22%.

关键词：融化覆盖中子物理 TBR 再生区

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Drop strength measurement of green pellet based on drop-rebound mechanism

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Journal of Iron and Steel Research International 2023年第11期30卷 2143-2152页

作者： Jie Lei Xu Gao Jing-shu An guang-da Bao Yu-qi Kong Hong-ming Long School of Metallurgical Engineering Anhui University of TechnologyMa’anshan243032AnhuiChina Key Laboratory of Metallurgical Emission Reduction and Resource Comprehensive Utilization Anhui University of TechnologyMa’anshan243032AnhuiChina

The construction of blast furnace charge structure based on pellet and the development of short process from non-blast furnace to electric furnace will be an efficient way to accomplish"carbon peak,carbon neutral".Since drop strength is one of the most crucial quality indexes for green pellet,the crack detection in the collision process is an indispensable segment;however,the present crack determination is basically completed *** to a series of problems including high labor intensity and poor detection conditions,it is urgent to develop an accurate,convenient and fast standardized method for drop strength *** view of the above issues,combined with plenty of experimental studies,it is found that whether rebound occurs after the collision of green ball can be used as the basis for judging if there are cracks on the surface,and the mechanism of this segment is explained by the energy conversion of collision process that the plastic deformation of the collision is a cumulative *** collision will cause a slight displacement of the iron ore particles;until the cumulative displacement exceeds the binding force between the particles,they will slip in a large range,that is,cracks will *** drop strength can be detected based on the drop-rebound mechanism determining crack generation during collision process by high-speed cameras,and the method is fully applicable to oxidized pellets with particle size of 8-16 mm though various pellet plasticities and masses increase the difficulty of bounce height *** on the drop-rebound mechanism of green pellet,three methods for automatically detecting the drop strength are proposed,which are high-speed camera,photoelectric sensor and pressure sensor methods.

关键词： Green pellet Drop strength Collision Rebound Crack

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Bandgaps of the Chalcogenide Glass Hollow-Core Photonic Crystal Fiber

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Chinese Physics Letters 2011年第11期28卷 113-116页

作者： LI shu-guang ZHOU Hong-Song YIN Guo-Bing Key Laboratory of Metastable Materials Science and Technology College of ScienceYanshan UniversityQinhuangdao 066004

Bandgaps of chalcogenide glass hollow-core photonic crystal fibers(GLS HC-PCFs)are analyzed by using the plane-wave expansion method.A mid-infrared laser can propagate in these low confinement loss fibers when the wavelength falls into the *** enlarging the bandgap width,an improved GLS HC-PCF is put forward,the normalized frequency𝑘Λof the improved fiber is from 7.2 to 8.5 in its first *** improved GLS HC-PCF with pitch of 4.2μm can transmit the lights with wavelengths ranging from 3.1m to 3.7μm.

关键词： fiber Crystal fibers

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Reliability Evaluation of Machine Center Components Based on Cascading Failure Analysis

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Chinese Journal of Mechanical Engineering 2017年第4期30卷 933-942页

作者： Ying-Zhi Zhang Jin-Tong Liu Gui-Xiang Shen Zhe Long shu-guang Sun College of Mechanical Science and Engineering Jilin University College of Management Science and Engineering Shandong Normal University

In order to rectify the problems that the com- ponent reliability model exhibits deviation, and the evalu- ation result is low due to the overlook of failure propagation in traditional reliability evaluation of machine center components, a new reliability evaluation method based on cascading failure analysis and the failure influ- enced degree assessment is proposed. A direct graph model of cascading failure among components is established according to cascading failure mechanism analysis and graph theory. The failure influenced degrees of the system components are assessed by the adjacency matrix and its transposition, combined with the Pagerank algorithm. Based on the comprehensive failure probability function and total probability formula, the inherent failure proba- bility function is determined to realize the reliability evaluation of the system components. Finally, the method is applied to a machine center, it shows the following： 1） The reliability evaluation values of the proposed method are at least 2.5% higher than those of the traditional method; 2） The difference between the comprehensive and inherent reliability of the system component presents a positive correlation with the failure influenced degree ofthe system component, which provides a theoretical basis for reliability allocation of machine center system.

关键词： s Cascading failure Machine centercomponents Reliability evaluation Pagerank algorithmInfluenced degree

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Breeding and Characterization of a New Rice Restorer Line Containing Bt Gene

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Rice science 2009年第3期16卷 194-200页

作者： GAO Fang-yuan LU Xian-jun HE shu-lin CHEN Xiao-juan Lu dai-hua SUN shu-xia LI Zhi-hua LIU guang-chun ZHANG Yi-zheng REN guang-jun Institute of Crop Sciences Sichuan Academy of Agricultural Sciences Chengdu 610066 China College of Life Sciences Sichuan University Chengdu 610041 China Innovation Center of Rice Regional Technology Ministry of Agriculture Chengdu 610066China Institute of Plant Protection Sichuan Academy of Agricultural Sciences Chengdu 610066 China

Bt5198, a new rice restorer line containing Bt gene, was developed from the cross and backcross of the elite restorer line Chenghui 177 with Bt Minghui 63, a transgenic Bt restorer line. The inbred lines were evaluated using PCR amplification, test paper evaluation, insect resistance evaluation in both the laboratory and paddy fields, nursery evaluation of rice blast resistance and pedigree selection of agronomic traits. Larval mortalities on Bt5198 and Bt Minghui 63 were 100% when rice culms were inoculated with the eggs of the striped stem borer （SSB） in the laboratory. Bt5198 was highly resistant against SSB and the yellow stem borer （YSB） under field conditions. The F1 hybrids derived from Bt5198 and four cytoplasmic male sterile （CMS） lines were also highly resistant to SSB and YSB and had a significant heterosis. Two-year evaluation of rice blast resistance confirmed that the resistance levels of Bt5198 to leaf blast and neck blast were similar to those of Chenghui 177 and significantly better than those of Bt Minghui 63. Seed germination ability and pollen yield of Bt5198 were similar with Chenghui 177, suggesting that the introduction of the Bt gene into the new restorer line had no significant effects on seed vitality or the yield of seed production. To identify the presence of the Bt gene, it was effective to combine test paper examination with the evaluation of insect-resistance, both in the laboratory and under field conditions.

关键词： hybrid rice restorer line Bt gene insect resistance Magnaporthe oryzae seed germination pollen yield

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Self-propagating synthesis joining of C_(f)/Al composites and TC4 alloy using AgCu filler with Ni-Al-Zr interlayer

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Rare Metals 2021年第7期40卷 1817-1824页

作者： Lei Shen Zhuo-Ran Li guang-Jie Feng shu-Ye Zhang Zhi Zhou Peng He State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China

The successful joining of carbon fiber-reinforced aluminum matrix(C_(f)/Al)composites and TC4 alloy can produce composite structure and meet the demands of lightweight in aerospace *** to now,few experimental researches have been reported on the joining of C_(f)/Al composites and TC4 *** this study,the AgCu foils and Ni-Al-Zr compact were designed for the self-propagating high-temperature synthesis joining of these two materials.C_(f)/Al composites were joined with a reactive Ti plated on its joining *** typical microstructure of TC4/(AgCu/Ni-Al-Zr/AgCu)/Ti/C_(f)/Al joint was analyzed,and the effects of joining condition on microstructural evolution of the SHS joint were investigated.A thin reaction layer of Ni-Al-Ti intermetallic compounds was formed adjacent to the TC4 *** a result,AgCu foils could reduce the effect of reaction heat on the substrates and improve the joint shear *** the thickness of AgCu foils reaches 150 lm,the Ni-Al-Zr interlayer mainly acts as auxiliary heat *** joining pressure caused the active elements to diffuse into C_(f)/Al composites and weakened the shear strength of the ***,the joint shear strength could reach 36.4 MPa when the AgCu foils were 50 lm and the joining pressure was 2 MPa.

关键词： Cf/Al composites TC4 alloy Self-propagating high-temperature synthesis joining Microstructure Shear strength

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Competitive analysis of price online inventory problem with cost function

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Applied Mathematics(A Journal of Chinese Universities) 2017年第4期32卷 493-502页

作者： HAN shu-guang GUO Jiu-ling ZHANG Lu-ping HU Jue-liang Department of Mathematics Zhejiang Sci-Tech University Hangzhou 310018 China

In this paper,a new price is given to the online decision maker at the beginning of each *** trader must decide how many items to purchase according to the current *** present three variants and an online algorithm based on cost *** competitive ratio of the online algorithm is given for each variant,which is a performance measure of an online *** importantly,we show that the online algorithm is optimal.

关键词： inventory problem price online cost function competitive analysis

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