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| 1 | The critical role of carbon in marrying silicon and graphite anodes for high-energy lithium-ion batteries显示文摘Increasing the energy density of conventional lithium-ion batteries(LIBs)is important for satisfying the demands of electric vehicles and advanced electronics.Silicon is considered as one of the most-promising anodes to replace the traditional graphite anode for the realization of high-energy LIBs due to its extremely high theoretical capacity,although its severe volume changes during lithiation/delithiation have led to a big challenge for practical application.In contrast,the co-utilization of Si and graphite has been well recognized as one of the preferred strategies for commercialization in the near future.In this review,we focus on different carbonaceous additives,such as carbon nanotubes,reduced graphene oxide,and pyrolyzed carbon derived from precursors such as pitch,sugars,heteroatom polymers,and so forth,which play an important role in constructing micrometersized hierarchical structures of silicon/graphite/carbon(Si/G/C)composites and tailoring the morphology and surface with good structural stability,good adhesion,high electrical conductivity,high tap density,and good interface chemistry to achieve high capacity and long cycling stability simultaneously.We first discuss the importance and challenge of the co-utilization of Si and graphite.Then,we carefully review and compare the improved effects of various types of carbonaceous materials and their associated structures on the electrochemical performance of Si/G/C composites.We also review the diverse synthesis techniques and treatment methods,which are also significant factors for optimizing Si/G/C composites.Finally,we provide a pertinent evaluation of these forms of carbon according to their suitability for commercialization.We also make far-ranging suggestions with regard to the selection of proper carbonaceous materials and the design of Si/G/C composites for further development. | Jingxing Wu Yinliang Cao Haimin Zhao Jianfeng Mao Zaiping Guo | 2019 | Carbon Energy2019，1，1： | 18 |
| 2 | On semisymmetric cubic graphs of order 6p^(2)显示文摘A graph Γ is said to be G-semisymmetric if it is regular and there exists a subgroup G of A := Aut(Γ) acting transitively on its edge set but not on its vertex set. In the case of G = A, we call Γ a semisymmetric graph. The aim of this paper is to investigate (G-)semisymmetric graphs of prime degree. We give a group-theoretical construction of such graphs, and give a classification of semisymmetric cubic graphs of order 6p2 for an odd prime p. | LU Zaiping, WANG Changqun & XU MingyaoLMAM, School of Mathematical Sciences, Peking University, Beijing 100871, China Department of Mathematics, Zhengzhou University, Zhengzhou 450052, ChinaPresent address: Department of Mathematics, Qufu Normal University, Qufu 273165, China. | 2004 | Science China Mathematics2004，47，1： | 11 |
| 3 | Hydrothermal Synthesis of Molybdenum Disulfide for Lithium Ion Battery Applications显示文摘Molybdenum disulfide nanoflakes were synthesized by a simple hydrothermal process using sodium molybdate and thiourea as reactants at a relatively low temperature. X-ray diffraction(XRD) and transmission elec-tron microscopy(TEM) indicate that the samples have the structure of 2H-MoS2 and the morphology of nanoflakes with the average thickness around 5-10 nm. The results of electrochemical properties indicate that the morphology and size of MoS2 particles have effects on their capacity when they are used as the anode for lithium ion battery. The as-prepared MoS2 samples have high reversible discharge capacity up to 994.6 mA·h·g-1 for the MoS2-1 elec-trode and 930.1 mA·h·g-1 for the MoS2-2 electrode and show excellent cycling performances. The MoS2-1 electrode has a better cycling stability than the MoS2-2 electrode due to their difference in the uniformity of the samples. | WANG Shiquan LI Guohua DU Guodong JIANG Xueya FENG Chuanqi GUO Zaiping KIM Seung-Joo | 2010 | Chinese Journal of Chemical Engineering2010，18，6： | 9 |
| 4 | SnSb@carbon nanocable anchored on graphene sheets for sodium ion batteries显示文摘有唯一的 nanostructures 的材料的开发是为在钠离子电池的钠存储的改进的有效策略完成稳定的骑车的性能和好率能力。在这个工作, SnSbcore/carbon-shell nanocables 直接在 graphene 表(GS ) 上抛锚了被热水的技术和化学蒸汽免职综合。同时的碳涂层和 SnSb 合金的封装为在钠离子电池减轻卷变化问题是有效的。在在钠离子电池为 SnSb 优化电解质以后,优化同轴的 SnSb/carbon nanocable/GS (SnSb/CNT@GS ) nanostructure 在 1 M NaClO 表明了稳定的骑车的能力和率性能 < 潜水艇 class= “ a-plus-plus ” > 有丙烯碳酸盐(PC ) 的 4 +5% fluoroethylene 碳酸盐(FEC ) 。SnSb/CNT@GS 电极能为多达 100 个周期保留 360 mAh/g 的一个能力,它是 71% 理论能力。这比在测试的另外的三电解质高( 1 M NaClO <潜水艇class=“ a-plus-plus ”> 4 在 PC , 1 M NaClO <潜水艇class=“ a-plus-plus ”>在 PC/FEC ( 1:1 v/v )和 1 M NaPF 的 4 <潜水艇class=“ a-plus-plus ”> 6 + PC ),并且比没有 graphene 的增加的样品的高。好电气化学的性能能被归因于禁止 SnSb 粒子,以及它的高传导性的凝块的外部碳 nanocable 层和 graphene 提供的有效缓冲。 | Li Li Kuok Hau Seng Dan Li Yongyao Xia Hua Kun Liu Zaiping Guo | 2014 | Nano Research2014，7，10： | 9 |
| 5 | Solving 3D Electromagnetic Scattering and Radiation by Local Multilevel Fast Multipole Algorithm显示文摘 | HU Jun NIE Zaiping LEI Lin RUI Xi WANG Jun | 2007 | Chinese Journal of Electronics2007，16，2： | 8 |
| 6 | Metal chalcogenides for potassium storage显示文摘Potassium-based energy storage technologies,especially potassium ion batteries(PIBs),have received great interest over the past decade.A pivotal challenge facing high-performance PIBs is to identify advanced electrode materials that can store the large-radius K+ions,as well as to tailor the various thermodynamic parameters.Metal chalcogenides are one of the most promising anode materials,having a high theoretical specific capacity,high in-plane electrical conductivity,and relatively small volume change on charge/discharge.However,the development of metal chalcogenides for PIBs is still in its infancy because of the limited choice of high-performance electrode materials.However,numerous efforts have been made to conquer this challenge.In this article,we overview potassium storage mechanisms,the technical hurdles,and the optimization strategies for metal chalcogenides and highlight how the adjustment of the crystalline structure and choice of the electrolyte affect the electrochemical performance of metal-chalcogenide-based electrode materials.Other potential potassium-based energy storage systems to which metal chalcogenides can be applied are also discussed.Finally,future research directions focusing on metal chalcogenides for potassium storage are proposed. | Jingwen Zhou Ye Liu Shilin Zhang Tengfei Zhou Zaiping Guo | 2020 | InfoMat2020，2，3： | 6 |
| 7 | Application of time reversal mirror technique in microwave-induced thermo-acoustic tomography system显示文摘Microwave-induced thermo-acoustic tomography (MITAT) is a promising technique with great potential in biomedical imaging. It has both the high contrast of the microwave imaging and the high resolution of the ultrasound imaging. In this paper, the proportional relationship between the absorbed microwave energy distribution and the induced ultrasound source distribution is derived. Further, the time reversal mirror (TRM) technique based on the pseudo-spectral time domain (PSTD) method is applied to MITAT system. The simulation results show that high contrast and resolution can be achieved by the TRM technique based on PSTD method even for the received signals with very low signal-to-noise ratio (SNR) and the model parameter with random fluctuation. | CHEN GuoPing ZHAO ZhiQin ZHENG WenJun NIE ZaiPing LIU QingHuo | 2009 | Science China(Technological Sciences)2009，52，7： | 4 |
| 8 | Adenovirus-mediated delivery of siRNA targeting TM4SF4 attenuated liver cancer cell growth in vitro and in vivo显示文摘基因用短介入 RNA (siRNA ) 指向成为了普通策略因为它的突出的功效和特性,探索基因功能。人的 transmembrane 4 总科成员(TM4SF4 ) 4 原来作为一个房间在肠和肝被识别增长相关的基因。最近,它在 hepatocellular 癌(HCC ) 显示出增加的表情纸巾。在这研究,我们开发了怀有指向 TM4SF4 (AdSiTM4SF4 ) 的有效 siRNA 的 adenoviral 向量并且在肿瘤细胞生长的抑制识别了它的功能。TM4SF4 与它由西方的污点分析和 immunohistochemistry 的配对的非肿瘤纸巾相比是在 HCC 纸巾的 overexpressed,这被证实。显著地,它在 HCC 房间的房间表面上是更丰富的。在在血浆膜戏剧性地局部性的四根房间线的宫外地表示的 TM4SF4 的信号,稍微在里面细胞质,并且在原子核不在,表明那 TM4SF4 是膜蛋白质。成功地由 AdSiTM4SF4 指向 TM4SF4 施加了基因击倒的效果。感染 AdSiTM4SF4 显著地显示了的 QGY-7701 和 SMMC-7721 HCC 房间稀释了生长潜力。而且, AdSiTM4SF4 的 intratumoral 注射显著地用 SMMC-7721 hepatoma 细胞在一个异种皮移植老鼠模型压制了肿瘤生长。我们的结果显示那指向的 TM4SF4 可能是为 HCC 的抑制的一种有希望的形式。 | Leiming Wang Jian Feng Liang Da Ying Li Zaiping Li Mujun Zhao | 2013 | Acta Biochimica et Biophysica Sinica2013，45，3： | 4 |
| 9 | Effects of Forest Roads on Habitat Pattern for Sables in Da Hinggan Mountains, Northeasten China显示文摘The anthropogenic managements of forest have created a network of roads resulting in the loss and alternation of habitat. To better understand road′s impact on animal habitats, we assessed the habitat pattern of sables(Martes zibellina), one of rodents within national first-class protected species, when roads are considered in Huzhong area in Da Hinggan Mountains, northeastern China. Employing published literatures about behavior ecology, aerial photographs and forest stand maps, we classified the study area into three habitat types including best-suitable, suitable and unsuitable habitats based on sable habitat requirements at the landscape scale including four variables derived from forest source map with attribute database. Results indicated the loss and significant fragmentation of best-suitable habitat and home range habitat when roads, especially 150 m avoidance distance of roads, were considered. The roads reduced and fragmented highly suitable habitats more significantly during earlier development period than the later development period. Additionally, the suitable area percentage increased with increasing distance to roads. This study helped to identify the suitable area for sables and location of sable population. Also, this study suggested the passage construction and road management involving road closure and removal will reduce the fragmentation functionally and benefit the sable population. | LI Yuehui WU Wen XIONG Zaiping HU Yuanman CHANG Yu XIAO Duning | 2014 | Chinese Geographical Science2014，24，5： | 4 |
| 10 | Fast and accurate analysis of electromagnetic scattering from targets situated in dielectric half space显示文摘Electromagnetic scattering from targets situated in half space is solved by applying fast inhomogeneous plane wave algorithm combined with a tabulation and interpolation method. The integral equation is set up based on derivation of dyadic Green's functions in this environment. The coupling is divided into nearby region and well-separated region by grouping. The Green's function can be divided into two parts: primary term and reflected term. In the well-separated region, the two terms are both expressed as Sommerfeld integral, which can be accelerated by deforming integral path and taking interpolation and extrapolation. For the nearby region, the direct Sommerfeld integral makes the filling of impedance matrix time-expensive. A tabulation and interpolation method is applied to speed up this process. This infinite integral is pre-computed in sampling region, and a two-dimensional table is then set up. The impedance elements can then be obtained by interpolation. Numerical results demonstrate the accuracy and efficiency of this algorithm. | Yongpin Chen Zaiping Nie Jun Hu | 2010 | Journal of Systems Engineering and Electronics2010，21，1： | 3 |
| 11 | The Impact of COVID-19 Epidemic on Tuberculosis Reports Among Students — Guizhou Province, China, 2020显示文摘Summary What is already known about this topic?In 2020,the implementation of non-medical interventions during the coronavirus disease 2019(COVID-19)epidemic has created a negative impact on tuberculosis(TB)control.It is unclear if the prevalence of TB among students in Guizhou Province was also affected.What is added by this report?Among TB cases,the proportion of student TB patients was 19.91%in the back-to-school period in 2020,which was higher than the 13.37%registered in 2017–2019,but this decreased in the COVID-19 pandemic period.The time interval between symptom onset and care-seeking of the student TB patients was the shortest in the back-to-school and physical checkup periods.What are the implications for public health practice?TB active screening was effective for timely detection and diagnosis of TB among students,which could prevent TB outbreaks in schools. | Yuying He Tao Li Lijie Zhang Renzhong Li Zaiping Chen Yunzhou Ruan Wei Su Jinlan Li | 2022 | China CDC weekly2022，4，11： | 3 |
| 12 | Fast computation of scattering from 3D complex structures by MLFMA显示文摘This paper introduces the research work on the extension of multilevel fast multipole algorithm (MLFMA) to 3D complex structures including coating object, thin dielectric sheet, composite dielectric and con-ductor, cavity. The impedance boundary condition is used for scattering from the object coated by thin lossy material. Instead of volume integral equation, surface integral equation is applied in case of thin dielectric sheet through resistive sheet boundary condition. To realize the fast computation of scattering from composite homoge-neous dielectric and conductor, the surface integral equation based on equivalence principle is used. Compared with the traditional volume integral equation, the surface integral equation reduces greatly the number of unknowns. To compute conducting cavity with electrically large aperture, an electric field integral equation is applied. Some numerical results are given to demonstrate the validity and accuracy of the present methods. | Hu Jun Nie Zaiping Que Xiaofeng Meng Min | 2008 | Journal of Systems Engineering and Electronics2008，19，5： | 3 |
| 13 | Theoretical screening of the transition metal heteronuclear dimer anchored graphdiyne for electrocatalytic nitrogen reduction显示文摘Developing efficient electrocatalysts for nitrogen reduction reaction(NRR)is crucial to replace the both energy-intensive and environment-malignant Haber-Bosch process.Here using density functional theory calculations,we systematically studied the potential of the heteronuclear 3 d transition metal dimers anchored graphdiyne monolayers(FeM@and NiM@GDY,M=Ti,V,Cr,Mn,Fe,Co,Ni,and Cu)as efficient NRR catalysts.Among all the studied double-atom catalysts(DACs),FeCo@and NiCo@GDY are the most promising with excellent NRR catalytic activity,high ability to suppress the competing hydrogen evolution reaction(HER),and good stability.For both FeCo@and NiCo@GDY,NRR prefers to the distal pathway with the calculated onset potentials of -0.44 and -0.36 V,respectively,which are comparable and even better than their homonuclear counterparts.Moreover,FeCo@and NiCo@GDY have higher ability to suppress HER than Fe_(2)@ and Co_(2)@GDY,which may result from the modulated d state electronic structure due to the synergy effect of the heteronuclear atoms in the DACs.Our work not only suggests that FeCo@and NiCo@GDY hold great promises as efficient,low-cost,and stable DACs for NRR,but also further provides a strategy,i.e.alloying the atomic metal catalysts,to improve the NRR catalytic activity and/or selectivity. | Dongwei Ma Zaiping Zeng Liangliang Liu Yu Jia | 2021 | Journal of Energy Chemistry2021，30，3： | 3 |
| 14 | Analysis for MIMO correlated frequency-selective channel in the presence of interference显示文摘The space time spreading,superimposed training sequences,and space-time coding are used to present a multiple input and multiple output (MIMO) systems model,and a closed-form of average error probability up-per bound expression for MIMO correlated frequency-selective channel in the presence of interference (co-channel interference and jamming signals) is derived.Moreover,the correlation at both ends of the wireless link that can be incorporated equivalently into correlation at the transmit end is also derived,which is significant to analyze space-time link algorithm of MIMO systems. | Xiao Hailin Nie Zaiping Li Xin Ouyang Shan | 2008 | Journal of Systems Engineering and Electronics2008，19，4： | 3 |
| 15 | Development of microwave-induced thermo-acoustic tomography prototype system显示文摘Due to its advantages in both contrast and resolution compared with conventional microwave or ultrasound imaging system, microwave-induced thermo-acoustic tomography (MITAT) has received more and more concerns in biologic tissue image field. In this paper, an integrated prototype of MITAT system is presented. Using this system, some basic experiments for biologic tissue objects with high water-content imbedded in fatty material have been done. In the MITAT experiments, the signals generated by two porcine muscle tissue strips with millimeter order scale in cross-section were collected. Images with both good contrast and resolution were obtained. In order to demonstrate the advantages of MITAT, some ultrasonic experiments were studied using a commercial ultrasonic linear array system. The comparisons of the results of both systems show the good performance of the MITAT prototype system for the detection of high water content targets, which is generally the same as the tumor in biologic tissue. | CHEN GuoPing ZHAO ZhiQin GONG Wei NIE ZaiPing LIU QingHuo | 2009 | Chinese Science Bulletin2009，54，23： | 3 |
| 16 | Morphology of the ascending aorta: a study on 114 Chinese patients显示文摘Purpose: This study aimed to investigate the morphological characteristics of ascending aortic dissection in detail. Materials and Methods: The ascending aorta was morphologically assessed in a consecutive series of patients between January 2009 and October 2014. A new assessment and evaluation method was used to describe 114 patients with ascending aortic dissection. Results: A large difference was found in the degree of curvature between the ascending aorta with and without dissection. The shape of the former was straighter and steeper(control group R, 47.46 ± 6.40 mm; experimental group R, 59.70 ± 10.27 mm, P < 0.001). In the case of aortic dissection involving the valves, the proximal edge of the first entry was obviously close to the aortic sinus. The orientation of the entries was mainly around the 10 o'clock and 1–2 o'clock positions, and most of their shapes were fusiform(111; 70.02%). The distance of the distal extending dissection was associated with cases involving the branch arteries(involving three branches 441.40 ± 101.13 mm vs 159.85 ± 131.86 mm in others, P < 0.001). Conclusion: The morphological features of the ascending aorta after dissection and the correlations among dissections, entries, and related factors were found. | Lei Liu Wei Wang Qingsheng Lu Zaiping Jing Suming Zhang Bing Xu | 2018 | Journal of Interventional Medicine2018，1，1： | 3 |
| 17 | Low spatial correlation at base station uniform linear antennas显示文摘A spatial channel propagation model is presented. Consider a uniform linear antenna (ULA) at the base station (BS) and narrowband signals transmitted at the mobile. In two types of propagating environments: indoor and outdoor, performance of low spatial correlation is investigated and some results are provided, which are significant to analyze the performance of diversity systems and configuration of array. The results also show that the configuration of array with either smaller angular spread or bigger angle of arrival (AOA) dominates the impact on spatial correlation, and that increasing angular spread or decreasing AOA diminishes, or even eliminates this impact. | Xiao Hailin Nie Zaiping | 2006 | Journal of Systems Engineering and Electronics2006，17，4： | 2 |
| 18 | Efficient analysis of dielectric radomes using multilevel fast multipole algorithm with CRWG basis显示文摘A full-wave analysis of the electromagnetic problem of a three-dimensional (3-D) antenna radiating through a 3-D dielectric radome is preserued. The problem is formulated using the Poggio-Miller-Chang-Harrington-Wu(PMCHW) approach for homogeneous dielectric objects and the electric field integral equation for conducting objects. The integral equations are discretized by the method of moment (MoM), in which the conducting and dielectric surface/interfaces are represented by curvilinear triangular patches and the unknown equivalent electric and magnetic currents are expanded using curvilinear RWG basis functions. The resultant matrix equation is then solved by the multilevel fast multipole algorithm (MLFMA) and fast far-field approximation (FAFFA) is used to further accelerate the computation. The radiation patterns of dipole arrays in the presence of radomes are presented. The numerical results demonstrate the accuracy and versatility of this method. | Que Xiaofeng Nie Zaiping Hu Jun | 2008 | Journal of Systems Engineering and Electronics2008，19，1： | 2 |
| 19 | In situ growth of NiS_(2) nanosheet array on Ni foil as cathode to improve the performance of lithium/sodium-sulfur batteries显示文摘The NiS;nanosheet array on Ni foil(NiS2/NF)was prepared using an in situ growth strategy and sulfidation method and was used as the cathode of lithium sulfur battery.The unique nanostructure of the NiS;nanosheet array can provide abundant active sites for the adsorption and chemical action of polysulfides.Compared with the sulfur powder coated pure NF(pure NF-S)for lithium sulfur battery,the sulfur powder coated NiS_(2)/NF(NiS_(2)/NF-S)electrode exhibits superior electrochemical performance.Specifically,the NiS_(2)/NF-S delivered a high reversible capacity of 1007.5 m Ah g^(-1) at a current density of 0.1 C(1 C=1675 mA g^(-1))and kept 74.5% of the initial capacity at 1.0 C after 200 cycles,indicating the great promise of NiS_(2)/NF-S as the cathode of lithium sulfur battery.In addition,the NiS_(2)/NF-S electrode also showed satisfactory electrochemical performance when used as the cathode for sodium sulfur battery. | FAN MouPing CHEN YuanMao KE Xi HUANG ZeXi CHEN YouChen WU WenLi QU XiaoFeng SHI ZhiCong GUO ZaiPing | 2022 | Science China(Technological Sciences)2022，65，1： | 2 |
| 20 | Ultra-light and flexible pencil-trace anode for high performance potassium-ion and lithium-ion batteries显示文摘Engineering design of battery configurations and new battery system development are alternative approaches to achieve high performance batteries. A novel flexible and ultra-light graphite anode is fabricated by simple friction drawing on filter paper with a commercial 8 B pencil.Compared with the traditional anode using copper foil as current collector, this innovative current-collector-free design presents capacity improvement of over 200% by reducing the inert weight of the electrode. The as-prepared pencil-trace electrode exhibits excellent rate performance in potassium-ion batteries(KIBs), significantly better than in lithium-ion batteries(LIBs), with capacity retention of 66% for the KIB vs. 28% for the LIB from 0.1 to 0.5 A g^(-1). It also shows a high reversible capacity of ~230 mAh g^(-1) at 0.2 A g^(-1), 75% capacity retention over350 cycles at 0.4 A g^(-1)and the highest rate performance(based on the total electrode weight) among graphite electrodes for K+ storage reported so far. | Zhixin Tai Yajie Liu Qing Zhang Tengfei Zhou Zaiping Guo Hua Kun Liu Shi Xue Dou | 2017 | Green Energy & Environment2017，2，3： | 2 |
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