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Development of a LiFePO_(4)-based high power lithium secondary battery for HEVs applications

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Rare Metals 2020年第12期39卷 1457-1463页

作者： Long-Zheng Deng Feng wu Xu-Guang Gao wei-ping wu Beijing Key Laboratory of Environmental Science and Engineering School of Chemical Engineering and the Environment Beijing Institute of TechnologyBeijing 100081China National&Local United Engineering Laboratory for Power Battery Department of ChemistryInstitute of Functional Material ChemistryNortheast Normal UniversityChangchun 130024China

A LiFeP04-type lithium secondary battery cell of 8 Ah capacity with a high energy density and power density was developed for hybrid electric vehicle(HEV)applications by optimizing the key raw materials and process *** 8 Ah class LiFePO_(4)cell with an energy density of 77.2 Wh·kg^(-1)exhibits a power density of 2818 W·kg^(-1)at 50%SOC(state of charge).The battery shows good cyclic capability with the capacity retention of 81.1%after 1,870 cycles at 5 C charge and 10 C discharge *** is demonstrated that the cells have an excellent balance of high-power,high-energy,low temperature,and long-life performance for meeting the requirements of HEV.

关键词： Li-ion battery Lithium iron phosphate High-power Long-life Hybrid electric vehicle

New approach to measuring topological phase transitions utilizing Floquet technology

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Chinese Physics B 2024年第9期33卷 282-288页

作者： Xue-Ying Yang wei wu ping-Xing Chen College of Sciences National University of Defense TechnologyChangsha 410073China

The Floquet technique provides a novel anomalous topological phase for non-equilibrium phase *** on the high symmetry of the quantum anomalous Hall model,the findings suggest a one-to-one correspondence between the average spin texture and the Floquet quasi-energy spectrum.A new approach is proposed to directly measure the quasienergy spectrum,replacing previous measurements of the average spin ***,we proposed a reliable experimental scheme based on ion trap *** scheme markedly reduces the measurement workload,improves the measurement fidelity,and is applicable to multiple platforms such as cold atoms and nuclear magnetic resonance.

关键词： topological phase transition Floquet technique ion trap

Percutaneous fixation of neonatal humeral physeal fracture: A case report and review of the literature

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World Journal of Clinical Cases 2020年第19期8卷 4535-4543页

作者： wei Tan Fu-Hua Wang Jing-Hui Yao wei-ping wu Yi-Bin Li Yue-Lun Ji Yue-Peng Qian Department of Pediatric Orthopedics The Third Affiliated Hospital of Southern Medical UniversityGuangzhou 510630Guangdong ProvinceChina The First School of Clinical Medicine Southern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Department of Orthopaedics and Traumatology Nanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina

BACKGROUND Neonatal distal humeral physeal fractures are rare and difficult to ***,missed diagnoses and delayed healing are *** studies have reported surgical treatment,because a callus may develop at the fracture site 5 d after the fracture,resulting in difficult reduction,and reduction of the limb may cause further physeal *** surgical challenges include the provision of adequate anesthesia and complexity of the ***,without appropriate reduction and fixation,a varus elbow deformity may *** reduction and percutaneous pin fixation are ideal treatment *** SUMMARY A 4-day-old neonate with left elbow pain accompanied by limited movement for 4 d was admitted,and diagnosed with delayed physeal fracture of the distal humerus based on physical examination,ultrasonography,and magnetic resonance *** patient was treated by manual reduction combined with percutaneous pin fixation under ***,the reduction was *** upper limbs could have been lifted and the fingers could have been moved freely on the second day after the *** The techniques of manual reduction and percutaneous pin fixation,to treat neonatal distal humeral physeal fractures,are safe and reliable.

关键词： Physeal fracture of the distal humerus Manual reduction Percutaneous pin fixation Neonate Case report

Research gaps for three main tropical diseases in the People’s Republic of China

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Infectious Diseases of Poverty 2013年第1期2卷 112-125页

作者： Qi Zheng Samantha Vanderslott Bin Jiang Li-Li Xu Cong-Shan Liu Le-Le Huo Li-ping Duan Ning-Bo wu Shi-Zhu Li Zhi-Gui Xia wei-ping wu wei Hu Hao-Bing Zhang National Institute of Parasitic Disease Chinese Center for Disease Control and PreventionWHO Collaborating Centre on MalariaSchisostomiasis and FilariasisKey Laboratory of Parasite and Vector BiologyMinistry of Health207 Rui Jin Er RdShanghai 200025People’s Republic of China The Department of Science and Technology Studies University College LondonLondon WC1E 6BTUK

This scoping review analyzes the research gaps of three diseases:schistosomiasis japonica,malaria and *** on available data in the ***,we highlight the gaps between control capacity and prevalence levels,and between diagnostic/drug development and population need for treatment at different stages of the national control *** reviewing the literature from 848 original studies and consultations with experts in the field,the gaps were identified as ***,the malaria research gaps include(i)deficiency of active testing in the public community and no appropriate technique to evaluate elimination,(ii)lack of sensitive diagnostic tools for asymptomatic patients,(iii)lack of safe drugs for mass ***,gaps in research of schistosomiasis include(i)incongruent policy in the implementation of integrated control strategy for schistosomiasis,(ii)lack of effective tools for Oncomelania *** control,(iii)lack of a more sensitive and cheaper diagnostic test for large population samples,(iv)lack of new drugs in addition to ***,gaps in research of echinococcosis include(i)low capacity in field epidemiology studies,(ii)lack of sanitation improvement studies in epidemic areas,(iii)lack of a sensitivity test for early diagnosis,(iv)lack of more effective drugs for short-term *** believe these three diseases can eventually be eliminated in China's Mainland if all the research gaps are abridged in a short period of time.

关键词： Schistosomiasis Malaria Echinococcosis Epidemiology Diagnosis Chemotherapy Research capacity building

Synthesis,Structural Characterization of Ferrocenyl Iminophosphines and Amidophosphines as Well as Their Application in the Suzuki Reaction

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Chemical Research in Chinese Universities 2007年第6期23卷 683-687页

作者： GONG Jun-fang ZHANG Yan-hui FAN Xin-heng WANG Da-wei SONG Mao-ping wu Yang-jie Department of Chemistry Henan Key Laboratory of Chemical Biology and Organic Chemistry Key Laboratory of Applied Chemistry of Henan Universities Zhengzhou University Zhengzhou 450052 P. R. China

Ferrocenyliminophosphine 1 and 1,1′-bisferrocenyliminophosphine 2 were easily prepared from the condensation of formylferrocene or 1,1′-diformylferrocene with 2-（diphenylphosphino） aniline. The following reduction of imine group by LiAlH4 led to the formation of the corresponding ferrocenyl amidophosphines 3 and 4. The new ligands 2- 4 were well characterized by IR, ^1H NMR, ^31p NMR spectra, elemental analysis, and ESI-MS. The catalytic activity of all the ligands with palladium compounds in the Suzuki reaction was evaluated. Ligand 1, in combination with Pd （OAc）2, was found to be the most effective for the Suzuki reaction of aryl bromides with phenylboronic acid. Typically, the use of 0. 1% （molar fraction） of Pd（OAc）2/ligand 1 in the presence of two equivalents of K2CO3 as base in toluene at 110 ℃ provided good to excellent yields of the coupled products.

关键词： Ferrocenyl Iminophosphine Amidophosphine Synthesis Suzuki reaction

Expression of G3BP and RhoC in esophageal squamous carcinoma and their effect on prognosis

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World Journal of Gastroenterology 2007年第30期13卷 4126-4130页

作者： Hui-Zhong Zhang Jin-Geng Liu Yi-ping wei Cheng wu Yong-Ke Cao Mei Wang Department of Cardiothoracic Surgery The Second Affiliated Hospital Sun Yat-Sen University 107 Yan- Jiang Road Guangzhou 510120 Guangdong Province China

AIM: To investigate the expression and significance of G3BP and RhoC proteins in esophageal squamous carcinoma (ESC). METHODS: The expression of G3BP and Rhoc proteins in 80 cases of ESC was detected by immunohistochemistry. The relationship was studied between the expression of the two proteins and tumor size, differentiation degree, TNM stage, lymph node metastasis and prognosis of ESC. RESULTS: The positive expression rate of G3BP in ESC was 71.25%; and the rate in the lymph node metastasis group was significantly higher than that in the non- lymph node metastasis group (Z = -2.283, P = 0.022), but no relations were found between G3BP expression and tumor size, differentiation degree and TNM stage (P > 0.05). The group with G3BP positive expression had shorter survival time than the group with G3BP negative expression (P = 0.000). The positive expression rate of RhoC in ESC was 66.25%; and the rate in the lymph node metastasis group was significantly higher than that in the non-lymph node metastasis group (Z = -2.115, P 0.05). The RhoC positive expression group had a shorter survival time than the RhoC negative expression group (P < 0.001. The expression of G3BP protein correlated positively with the expression of RhoC in ESC tissues (rs = 0.656, P < 0.001). CONCLUSION: The expression of G3BP and RhoC protein is closely related to the lymph node metastasis and survival in ESC patients. G3BP and RhoC proteins can be considered as predictors of prognosis in ESC patients.

关键词： Esophageal neoplasm G3BP RhoC Immunohistochemistry Lymph node metastasis Prognosis

An adaptive finite-difference method for seismic traveltime modeling based on 3D eikonal equation

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Petroleum Science 2024年第1期21卷 195-205页

作者： Bao-ping Qiao Qing-Qing Li wei-Guang He Dan Zhao Qu-Bo wu CNNC Beijing Research Institute of Uranium Geology Beijing 100029China National Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580ShangdongChina SINOPEC Geophysical Research Institute Nanjing211103JiangsuChina

3D eikonal equation is a partial differential equation for the calculation of first-arrival traveltimes and has been widely applied in many scopes such as ray tracing,source localization,reflection migration,seismic monitoring and tomographic *** recent years,many advanced methods have been developed to solve the 3D eikonal equation in heterogeneous ***,there are still challenges for the stable and accurate calculation of first-arrival traveltimes in 3D strongly inhomogeneous *** this paper,we propose an adaptive finite-difference(AFD)method to numerically solve the 3D eikonal *** novel method makes full use of the advantages of different local operators characterizing different seismic wave types to calculate factors and traveltimes,and then the most accurate factor and traveltime are adaptively selected for the convergent updating based on the Fermat *** with global fast sweeping describing seismic waves propagating along eight directions in 3D media,our novel method can achieve the robust calculation of first-arrival traveltimes with high precision at grid points either near source point or far away from source point even in a velocity model with large and sharp *** numerical examples show the good performance of the AFD method,which will be beneficial to many scientific applications.

关键词： 3D eikonal equation Accurate traveltimes Global fast sweeping 3D inhomogeneous media Adaptive finite-difference method

Privacy-Preserving Consensus-Based Distributed Economic Dispatch of Smart Grids via State Decomposition

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IEEE/CAA Journal of Automatica Sinica 2024年第5期11卷 1250-1261页

作者： wei Chen Guo-ping Liu The authors are with the Center for Control Science and Technology Southern University of Science and TechnologyShenzhen 518055China

This paper studies the privacy-preserving distributed economic dispatch(DED)problem of smart *** autonomous consensus-based algorithm is developed via local data exchange with neighboring nodes,which covers both the islanded mode and the grid-connected mode of smart *** prevent power-sensitive information from being disclosed,a privacy-preserving mechanism is integrated into the proposed DED algorithm by randomly decomposing the state into two parts,where only partial data is *** objective is to develop a privacy-preserving DED algorithm to achieve optimal power dispatch with the lowest generation cost under physical constraints while preventing sensitive information from being *** this end,a comprehensive analysis framework is established to ensure that the proposed algorithm can converge to the optimal solution of the concerned optimization problem by means of the consensus theory and the eigenvalue perturbation *** particular,the proposed autonomous algorithm can achieve a smooth transition between the islanded mode and the grid-connected ***,rigorous analysis is given to show privacy-preserving performance against internal and external ***,case studies illustrate the feasibility and validity of the developed algorithm.

关键词： preserving autonomous mode

Study of baryon number transport dynamics and strangeness conservation effects using Ω-hadron correlations

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Nuclear Science and Techniques 2024年第7期35卷 147-156页

作者： wei-Jie Dong Xiao-Zhou Yu Si-Yuan ping Xia-Tong wu Gang Wang Huan-Zhong Huang Zi-wei Lin Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Fudan UniversityShanghai 200433China Department of Physics and Astronomy University of CaliforniaLos AngelesCA 90095USA Department of Physics East Carolina UniversityGreenvilleNC 27858USA

In nuclear collisions at RHIC energies, an excess of Ω hyperons over ■ is observed, indicating that Ω has a net baryon number despite s and s quarks being produced in pairs. The baryon number in Ω may have been transported from the incident nuclei and/or produced in the baryon-pair production of Ω with other types of anti-hyperons such as Ξ. To investigate these two scenarios, we propose to measure the correlations between Ω and K and between Ω and anti-hyperons. We use two versions, the default and string-melting, of a multiphase transport(AMPT) model to illustrate the method for measuring the correlation and to demonstrate the general shape of the correlation. We present the Ω-hadron correlations from simulated Au+Au collisions at ■ =7.7 and 14.6 Ge V and discuss the dependence on the collision energy and on the hadronization scheme in these two AMPT versions. These correlations can be used to explore the mechanism of baryon number transport and the effects of baryon number and strangeness conservation on nuclear collisions.

关键词： Baryon number transport Strangeness conversation Correlation Gluon junction