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| 1 | SHRIMP zircon U-Pb ages and tectonic implications for Indosinian granitoids of southern Zhuguangshan granitic composite, South China显示文摘The large southern Zhuguangshan granitic batholith composite consists of granites with ages varying from the Caledonian through Indosinian to Yanshanian. Based on K-Ar dating data, the ages of the major parts of this composite were previously regarded as Yanshanian. In this study, the SHRIMP zircon U-Pb dating method has been adopted for six plutons, Ledong, Longhuashan, Dawozi, Zhaidi, Baiyun and Jiangnan, in the southern Zhuguangshan composite, in which the four plutons other than Baiyun and Jiangnan were previously regarded as Yanshanian granites. Magmatic zircons from these six plutons, dated by this study, have yielded ages of 239±5 Ma (MSWD = 2.5), 239±5 Ma (MSWD = 2.5), 239±2 Ma (MSWD = 1.7), 239±4 Ma (MSWD = 3.2), 231±2 Ma (MSWD = 0.81) and 231±3 Ma (MSWD = 1.8), respectively. The results indicate that these plutons were formed by early Indosinian magmatism. Geochemical characteristics suggest that these granites were formed in an extensional tectonic environment. Therefore, the Indosinian period granites in the southern Zhuguangshan composite were formed by partial melting of the Paleo-Mesoproterozoic crustal components during the collapse of thickened lithosphere after the collision between the South China and Indosinian plates. | DENG Ping REN JiShun LING HongFei SHEN WeiZhou SUN LiQiang ZHU Ba TAN ZhengZhong | 2012 | Chinese Science Bulletin2012,57,13: | 19 |
| 2 | A 5-DOF Model for Aeroengine Spindle Dual-rotor System Analysis显示文摘This paper develops a five degrees of freedom(5-DOF) model for aeroengine spindle dual-rotor system dynamic analysis.In this system,the dual rotors are supported on two angular contact ball bearings and two deep groove ball bearings,one of the latter-mentioned bearings works as the inter-shaft bearing.Driven by respective motors,the dual rotors have different co-rotating speeds.The proposed model mathematically formulates the nonlinear displacements,elastic deflections and contact forces of bearings with consideration of 5-DOF and coupling of dual rotors.The nonlinear equations of motions of dual rotors with 5-DOF are solved using Runge-Kutta-Fehlberg algorithm.In order to investigate the effect of the introduced 5-DOF and nonlinear dy-namic bearing model,we compare the proposed model with two models:the 3-DOF model of this system only considering three translational degrees of freedom(Gupta,1993,rotational freedom is neglected);the 5-DOF model where the deep groove ball bearings are simplified as linear elastic spring(Guskov,2007).The simulation results verify Gupta's prediction(1993) and show that the rotational freedom of rotors and nonlinear dynamic model of bearings have great effect on the system dynamic simula-tion.The quantitative results are given as well. | HU Qinghua DENG Sier TENG Hongfei | 2011 | Chinese Journal of Aeronautics2011,24,2: | 18 |
| 3 | Geochemical Characteristics and Genesis of the Luxi-Xianrenzhang Diabase Dikes in Xiazhuang Uranium Orefield, Northern Guangdong Province显示文摘The Luxi-Xianrenzhang diabase dikes were emplaced into the eastern part of the Guidong composite granitoids in northern Guangdong Province at the end of the Early Cretaceous. They show tholeiitic features, enrichment in large ion lithophile elements, slight enrichment in light rare earth elements, depletion in Zr and Hf, and basically no depletion in Nb and Ta and no Eu anomaly. They are similar to intraplate basalt in terms of trace element characteristics. They have high εNd(t) values (3.6–4.9), initial 87Sr/86Sr ratios (0.70530–0.70641) and δ18O values and Dupal anomaly of Pb isotope compositions. Their Sr-Nd, Pb-Sr, Pb-Nd and Pb-Pb isotopes plot between DMM and EMII, with Pb similar to EMII, Nd relatively close to DMM and Sr in between. This profile suggests that the diabase dikes studied were derived from partial melting of a mantle source that had been subjected to metasomatism by fluids originated from a subduction zone under a tectonic environment of crustal extension and lithosphere thinning in the late Yanshanian. | LING Hongfei SHEN Weizhou DENG Ping JIANG Shaoyong JIANG Yaohui YE Haimin PU Wei TAN Zhengzhong | 2005 | Acta Geologica Sinica(English Edition)2005,79,4: | 13 |
| 4 | CONSTITUTIVE EQUATION OF A NEW AVIATION LUBRICATING OIL显示文摘润滑油的新航空的拖拉在一个白手起家的测试钻塔上被测量。象 Erying 应力那样的油的神学的参数的精明的公式,限制砍强调有弹性的模量在高度的条件下面被获得并且砍砍在 elastohydrodynamic 润滑油(EHL ) 的种类率。这油的组成的方程被测试决定并且验证。当粘弹性的液体和理论价值与测量数据相当同意很好,实验的结果证明润滑油的新航空的行为表现,它暗示这油的组成的方程正确、可行。 | DENG Sier TENG Hongfei WANG Yanshuang LI Yunfeng YANG Boyuan | 2007 | Chinese Journal of Mechanical Engineering2007,20,5: | 6 |
| 5 | Gut,metabolism and nutritional Support for COVID-19:Experiences from China显示文摘There is little research that focuses on the relationship between the gut,metabolism,nutritional support and COVID-19.As a group of Chinese physicians,nutritionists and scientists working on the frontline treating COVID-19 patients,we aim to integrate our experiences and the current clinical evidence to address this pressing issue in this article.Based on our clinical observations and available evidence,we recommend the following practice.Firstly,the Nutritional Risk Screening 2002 tool should be used routinely and periodically;for patients with a score≥3,oral nutritional supplements should be given immediately.Secondly,for patients receiving the antiviral agents lopinavir/ritonavir,gastrointestinal side effects should be monitored for and timely intervention provided.Thirdly,for feeding,the enteral route should be the first choice.In patients undergoing mechanical ventilation,establishing a jejunal route as early as possible can guarantee the feeding target being achieved if gastric dilatation occurs.Fourthly,we suggest a permissive underfeeding strategy for severe/critical patients admitted to the intensive care unit during the first week of admission,with the energy target no more than 20 kcal/kg/day(for those on mechanical ventilation,this target may be lowered to 10–15 kcal/kg/day)and the protein target around 1.0–1.2 g/kg/day.If the inflammatory condition is significantly alleviated,the energy target may be gradually increased to 25–30 kcal/kg/day and the protein target to 1.2–1.5 g/kg/day.Fifthly,supplemental parenteral nutrition should be used with caution.Lastly,omega-3 fatty acids may be used as immunoregulators,intravenous administration of omega-3 fatty emulsion(10 g/day)at an early stage may help to reduce the inflammatory reaction. | Ting Yuanand Wei Chen Hua Jiang Jian-Cheng Zhang Jun Zeng Lu Wang Yu Wang Charles Damien Lu Lei Deng Hongfei Deng Kai Wang Ming-Wei Sun Ping Zhou Ting Yuan Wei Chen | 2020 | Burns & Trauma2020,8,1: | 2 |
| 6 | Tuning exsolution of nanoparticles in defect engineered layered perovskite oxides for efficient CO_(2) electrolysis显示文摘Solid oxide electrolysis cell(SOEC) could be a potential technology to afford chemical storage of renewable electricity by converting water and carbon dioxide.In this work,we present the Ni-doped layered perovskite oxides,(La_(4)Sr_(n-4))_(0.9)Ti_(0.9n)Ni_(0.1n)O_(3n+2) with n=5,8,and 12(LSTNn) for application as catalysts of CO_(2) electrolysis with the exsolution of Ni nanoparticles through a simple in-situ growth method.It is found that the density,size,and distribution of exsolved Ni nanoparticles are determined by the number of n in LSTNn due to the different stack structures of TiO_6 octahedra along the c axis.The Ni doping in LSTNn significantly improved the electrochemical activity by increasing oxygen vacancies,and the Ni metallic nanoparticles afford much more active sites.The results show that LSTNn cathodes can successfully be manipulated the activity by controlling both the n number and Ni exsolution.Among these LSTNn(n=5,8,and 12),LSTN8 renders a higher activity for electrolysis of CO_(2) with a current density of 1.50A cm^(-2)@2.0 V at 800℃ It is clear from these results that the number of n in(La_(4)Sr_(n-4))_(0.9)Ti_(0.9n)Ni_(0.1n)O_(3n+2)with Ni-doping is a key factor in controlling the electrochemical performance and catalytic activity in SOEC. | Zhengrong Liu Jun Zhou Yueyue Sun Xiangling Yue Jiaming Yang Lei Fu Qinyuan Deng Hongfei Zhao Chaofan Yin Kai Wu | 2023 | Journal of Energy Chemistry2023,,9: | 1 |
| 7 | Status and de- velopment of' simulation technology of the rolling element bearing system 显示文摘 | Huang Qiangui Deng Si'er Teng Hongfei | 2002 | Beijing2002,,4: | 1 |
| 8 | Location and sheff mapping from OPAC search results: With reference to Wichita State University显示文摘 | Li Hongfei Deng Sai | 2008 | New Library World2008,109,34: | 1 |
| 9 | Status and de- velopment of simulation technology of the rolling element bearing system 显示文摘 | Huang Qiangui Deng Sier Teng Hongfei | 2002 | Beijing2002,,4: | 1 |
| 10 | Effects on noise properties of GPS time series caused by higher-order ionospheric corrections显示文摘 | Weiping Jiang Liansheng Deng Zhao Li Xiaohui Zhou Hongfei Liu | 2014 | Advances in Space Research2014,,7: | 1 |
| 11 | Telbivudine Prevents Vertical Transmission of Hepatitis B Virus from Women High Viral Loads: A Prospective Long-term Study显示文摘 | Quanxin Wu Hongfei Huang Xiaowen Sun Meiming Pan Yun He Shun Tan Yi Zeng Li Li Guohong Deng Zehui Yan Dengming He Junnan Li Yuming Wang | 2014 | Clinical Gastroenterology and Hepatology2014,,: | 1 |
| 12 | Design,Fabrication and Assembly of the Solar Upper Transition Region Imager(SUTRI)显示文摘The Solar Upper Transition Region Imager(SUTRI)focuses on the solar transition region to achieve dynamic imaging observation of the upper transition region.In this paper,we report the optical system design,mechanical design,ultrasmooth mirror manufacture and measurement,EUV multilayer film coating,prelaunch installation and calibration for the SUTRI payload at IPOE,Tongji University.Finally,the SUTRI carried by the SATech-01 satellite was successfully set to launch.All functions of this telescope were normal,and the observation results obtained in orbit were consistent with the design. | Zhanshan Wang Jun Yu Runze Qi Chunling He Zhengxiang Shen Li Jiang Weichen Gu Jiali Wu Zhe Zhang Pengfeng Sheng Yifan Wang Yue Yu Zeyi Ye JingJing Xia Yujie Xing Hongfei Jiao Bin Ma Qiushi Huang Zhong Zhang Xianyong Bai Yuanyong Deng Hui Tian Nange Wang Lun Shen Song Guo Lei Jing Xiaobo Chen Yang Gao Xiaocheng Zhu Xiaofeng Zhang Junwang He Qi Shi Shuo Liu Xingzi Bi | 2023 | Research in Astronomy and Astrophysics2023,23,9: | 0 |
| 13 | Investigation of Lushan earthquake ionosphere VTEC anomalies based on GPS data显示文摘Vertical total electron content(VTEC)time series were obtained from 22 GPS stations near the epicenter of the Lushan earthquake.In this paper,we have adopted a sliding average method to detect and analyze anomalous VTEC associated with the earthquake.The results show that significant,negative ionosphere VTEC anomalies appeared over the 5 days before the earthquake,and on the day when earthquake occurred.The maximum value of VTEC anomalies that exceeded the lower bound reached 20 TECU.The spatial distribution of VTEC anomalies showed a conjugate structure,which shifted to the magnetic equator,and subsequently moved westwards. | Weiping Jiang Yifang Ma Hongfei Liu Liansheng Deng Xiaohui Zhou | 2013 | Earthquake Science2013,26,3: | 0 |
| 14 | Proton storage chemistry in aqueous zinc-organic batteries:A review显示文摘Benefiting from the advantageous features of structural diversity and resource renewability,organic electroactive compounds are considered as attractive cathode materials for aqueous Zn-ion batteries(ZIBs).In this review,we discuss the recent developments of organic electrode materials for aqueous ZIBs.Although the proton(H^(+))storage chemistry in aqueous Zn-organic batteries has triggered an overwhelming literature surge in recent years,this topic remains controversial.Therefore,our review focuses on this significant issue and summarizes the reported electrochemical mechanisms,including pure Zn^(2+)intercalation,pure H^(+)storage,and H^(+)/Zn^(2+)co-storage.Moreover,the impact of H^(+)storage on the electrochemical performance of aqueous ZIBs is discussed systematically.Given the significance of H^(+)storage,we also highlight the relevant characterization methods employed.Finally,perspectives and directions on further understanding the charge storage mechanisms of organic materials are outlined.We hope that this review will stimulate more attention on the H^(+)storage chemistry of organic electrode materials to advance our understanding and further its application. | Xianming Deng James Kumankuma Sarpong Guobin Zhang Jing Hao Xu Zhao Linyuan Li Hongfei Li Cuiping Han Baohua Li | 2023 | InfoMat2023,5,2: | 0 |
| 15 | WOOD/PCM composite with enhanced energy storage density and anisotropic thermal conductivity显示文摘Phase change materials(PCMs)have great potential in energy-saving and environmental field due to their high latent heat.The deficiencies that restrict the application of PCMs are their poor thermal conductivity and liquid leakage after phase change.To shoot these problems,a thermally-induced flexible WOOD/PCM composite with enhanced energy storage density and anisotropic thermal conductivity has been proposed.This composite consisted of polyethylene glycol 6000(PEG6000),delignified balsa wood and boron nitride(BN).The results revealed that the melting enthalpy and freezing enthalpy of WOOD/PEG6000 composite were 209.3 J/g and 214.9 J/g,which had an augment of about 8%comparing with pure PEG6000.After adding 33 wt%BN to the composite,its thermal conductivity in the out-of-plane direction reached 0.96 W/(m⋅K),while the radial thermal conductivity was 0.36 W/(m⋅K).The controllable anisotropic thermal conductivity implies a good application in the environment where forced unidirectional heat dissipation is needed.Furthermore,the composite also shows excellent thermal induced flexibility,such as bending and compression,which is significant in reducing thermal contact resistance with substrates in application.This work indicates that the prepared PCM composite has a great potential application in thermal energy storage and thermal management. | Hongfei Chen Jihang Xuan Qiaoling Deng Yanfeng Gao | 2022 | Progress in Natural Science:Materials International2022,32,2: | 0 |