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| 1 | Research of the Unity Theory Between Three-level Space Vector and Carrier-based PWM Modulation Strategy显示文摘两电平空间矢量脉宽调制(space vector pulse widthmodulation,SVPWM)与正弦脉宽调制(sinusoidal pulse widthmodulation,SPWM)存有一定的本质关系,对于三电平,在常见的8段式SVPWM序列中可以证明,SVPWM与SPWM本质上也存在某种统一。实际的SVPWM调制中,由于要考虑中点电压平衡、减少谐波等其它性能问题,一般会利用开关冗余状态得到8段以上的开关调制序列。目前的文献中还未曾有对这些情况进行统一性地验证,因此三电平SVPWM与SPWM的统一理论存在一定的不足。研究发现,可通过严格地理论推导将传统意义上的调制波分解为2个子调制波,再进行SPWM调制,可以得到与SVPWM完全吻合的序列。该文在此方法基础上深入研究了8段以上(10、12、14段)的SVPWM调制序列与SPWM的统一。经过严格地理论推导,成功实现了含任意段数的SVPWM序列与SPWM的统一。仿真结果证明了该理论的正确性。 | CHEN Juan HE Yingjie WANG Xinyu LIU Jinjun | 2013 | 中国电机工程学报2013，33，9： | 28 |
| 2 | Mushroom Poisoning Outbreaks—China,2010–2020显示文摘ABSTRACT Introduction:Mushroom poisoning was the leading cause of foodborne disease outbreaks and outbreak-associated deaths in China.Mushroom poisoning outbreak surveillance can provide insight into the epidemiological characteristics of mushroom poisonings and guide policymaking and health education to reduce illnesses and deaths.Methods:Foodborne Disease Outbreak Surveillance System was upgraded in 2011 to collect foodborne disease outbreaks in China.Mushroom poisoning outbreaks during 2010–2020 were selected to analyze geographical distribution,seasonal distribution,and setting of food preparation.Results:A total of 10,036 outbreaks,which resulted in 38,676 illnesses and 788 deaths,were reported in this period.Mushroom poisonings occurred all over the country,but with highest incidence in the southwest and central China. | Weiwei Li Sara M.Pires Zhitao Liu Jinjun Liang Yafang Wang Wen Chen Chengwei Liu Jikai Liu Haihong Han Ping Fu Yunchang Guo | 2021 | China CDC weekly2021，3，24： | 18 |
| 3 | Hybrid algorithm combining genetic algorithm with back propagation neural network for extracting the characteristics of multi-peak Brillouin scattering spectrum显示文摘 | Yanjun ZHANG Jinrui XU Xinghu FU Jinjun LIU Yongsheng TIAN | 2017 | Frontiers of Optoelectronics2017，10，1： | 8 |
| 4 | Numerical simulation of Gurney flap on SFYT15thick airfoil显示文摘A two-dimensional steady Reynolds-averaged Navier–Stokes(RANS) equation was solved to investigate the effects of a Gurney flap on SFYT15 thick airfoil aerodynamic performance. This airfoil was designed for flight vehicle operating at 20 km altitude with freestream velocity of 25 m/s. The chord length(C) is5 m and the Reynolds number based on chord length is Re = 7.76 × 105. Gurney flaps with the heights ranging from 0.25%C to 3%C were investigated. The shear stress transport(SST) k-ω turbulence model was used to simulate the flow structure around the airfoil. It is showed that Gurney flap can enhance not only the prestall lift but also lift-to-drag ratio in a certain range of angles of attack. Specially, at cruise angle of attack(α = 3°), Gurney flap with 0.5%C height can increase lift-to-drag ratio by 2.7%, and lift coefficient by 12.9%, respectively. Furthermore, the surface pressure distribution, streamlines and trailing-edge flow structure around the airfoil are illustrated, which are helpful to understand the mechanisms of Gurney flap on airfoil aerodynamic performance. Moreover, it is found that the increase of airfoil drag with Gurney flap can be attributed to the increase of pressure drag between the windward and the leeward sides of Gurney flap itself. | Xi He Jinjun Wang Muqing Yang Dongli Ma Chao Yan Peiqing Liu | 2016 | Theoretical & Applied Mechanics Letters2016，6，6： | 5 |
| 5 | Mesocrystalline TiO2/sepiolite composites for the effective degradation of methyl orange and methylene blue显示文摘 | Ruirui LIU Zhijiang JI Jing WANG Jinjun ZHANG | 2018 | Frontiers of Materials Science2018，12，3： | 4 |
| 6 | Transonic buffet control research with two types of shock control bump based on RAE2822 airfoil显示文摘Current research shows that the traditional shock control bump(SCB) can weaken the intensity of shock and better the transonic buffet performance. The author finds that when SCB is placed downstream of the shock, it can decrease the adverse pressure gradient. This may prevent the shock foot separation bubble to merge with the trailing edge separation and finally improve the buffet performance. Based on RAE2822 airfoil, two types of SCB are designed according to the two different mechanisms. By using Reynolds-averaged Navier-Stokes(RANS) and unsteady Reynolds-averaged Navier-Stokes(URANS) methods to analyze the properties of RAE2822 airfoil with and without SCB, the results show that the downstream SCB can better the buffet performance under a wide range of freestream Mach number and the steady aerodynamics characteristic is similar to that of RAE2822 airfoil. The traditional SCB can only weaken the intensity of the shock under the design condition. Under the off-design conditions, the SCB does not do much to or even worsen the buffet performance. Indeed, the use of backward bump can flatten the leeward side of the airfoil, and this is similar to the mechanism that supercritical airfoil can weaken the recompression of shock wave. | Yun TIAN Shiqi GAO Peiqing LIU Jinjun WANG | 2017 | Chinese Journal of Aeronautics2017，30，5： | 4 |
| 7 | Multiple transformation pathways of p-arsanilic acid to inorganic arsenic species in water during UV disinfection显示文摘p-Arsanilic acid(p-ASA) is widely used in China as livestock and poultry feed additive for promoting animal growth.The use of organoarsenics poses a potential threat to the environment because it is mostly excreted by animals in its original form and can be transformed by UV–Vis light excitation.This work examined the initial rate and efficiency of p-ASA phototransformation under UV-C disinfection lamp.Several factors influencing p-ASA phototransformation,namely,p H,initial concentration,temperature,as well as the presence of Na Cl,NH4+,and humic acid,were investigated.Quenching experiments and LC–MS were performed to investigate the mechanism of p-ASA phototransformation.Results show that p-ASA was decomposed to inorganic arsenic(including As(Ⅲ) and As(V))and aromatic products by UV-C light through direct photolysis and indirect oxidation.The oxidation efficency of p-ASA by direct photosis was about 32%,and those by HOU and1O2 were 19% and 49%,respectively.Cleavage of the arsenic–benzene bond through direct photolysis,HOU oxidation or1O2 oxidation results in simultaneous formation of inorganic As(Ⅲ),As(IV),and As(V).Inorganic As(Ⅲ) is oxidized to As(IV) and then to As(V) by1O2 or HOU.As(IV) can undergo dismutation or simply react with oxygen to produce As(V) as well.Reactions of the organic moieties of p-ASA produce aniline,aminophenol and azobenzene derivatives as main products.The photoconvertible property of p-ASA implies that UV disinfection of wastewaters from poultry and swine farms containing p-ASA poses a potential threat to the ecosystem,especially agricultural environments. | Suqi Li Jing Xu Wei Chen Yingtan Yu Zizheng Liu Jinjun Li Feng Wu | 2016 | Journal of Environmental Sciences2016，28，9： | 4 |
| 8 | Risk management strategies for the 2022 Olympic Winter Games:The Beijing scheme显示文摘As the first international sporting event scheduled since the outbreak of the novel coronavirus disease 2019(COVID-19)pandemic,the Beijing XXIV Olympic Winter Games were officially held in China between the 4th and 20th of February 2022.1 According to the International Olympic Committee(IOC),there were approximately 2900 elite athletes from 91 National Olympic Committees competing in 109 events during the 16 days of the Games.2 In fact,under the conditions of a global pandemic,mass gatherings during large-scale sporting events represent a conducive environment for viral transmission given the close,prolonged,and frequent interactions between participants;this includes an increased risk of transmission of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2). | Jie Liu Jing Lou Yong Wang Jinjun Zhang | 2022 | Journal of Sport and Health Science2022，11，5： | 4 |
| 9 | Water dissipation mechanism of residential and office buildings in urban areas显示文摘Indoor humidity directly impacts the health of indoor populations. In arid and semi-arid cities, the buildings indoor humidity is typically higher than outdoors, and the presence of water vapor results from water dissipation inside the buildings. Few studies have explored indoor humidity features and vapor distribution or evaluated water dissipation inside buildings. This study examined temperature and relative humidity(RH) changes in typical residential and office buildings. The results indicate a relatively stable temperature with vary range of ±1°C and a fluctuation RH trend which is similarly to that of water use. We proposed the concept of building water dissipation to describe the transformation of liquid water into gaseous water during water consumption and to develop a building water dissipation model that involves two main parameters: indoor population and total floor area. The simulated values were verified by measuring water consumption and water drainage, and the resulting simulation errors were lower for residential than for office buildings. The results indicate that bathroom vapor accounts for 70% of water dissipation in residential buildings. We conclude that indoor humidity was largely a result of water dissipation indoors, and building water dissipation should be considered in urban hydrological cycles. | ZHOU JinJun LIU JiaHong WANG Hao WANG ZhongJing MEI Chao | 2018 | Science China(Technological Sciences)2018，61，7： | 3 |
| 10 | Novel C-17 spirost protostane-type triterpenoids from Alisma plantago-aquatica with antiinflammatory activity in Caco-2 cells显示文摘Twenty-one protostane-type triterpenoids with diverse structures, including nine new compounds(1 e9), were isolated from the of Alisma plantago-aquatica Linn. Structurally, alisolides A-F(1 e6), composed of an oxole group coupled to a five-membered ring, represent unusual C-17 spirost protostane-type triterpenoids. Alisolide H(8) is a novel triterpenoid with an unreported endoperoxide bridge. Alisolide I(9) represents the first example of 23,24-acetal triterpenoid. Their structures were elucidated based on spectroscopic analysis, wherein the absolute configurations of 4-6, 8 were further confirmed by the Mo2(OAc)4-induced ECD method. Furthermore, all isolates were evaluated for their inhibitory effects on LPS-induced NO production in Caco-2 cells, and all the compounds showed remarkable inhibitory activities, with IC50 values in the range of 0.76 e38.20 mmol/L. | Qinghao Jin Jianqing Zhang Jinjun Hou Min Lei Chen Liu Xia Wang Yong Huang Shuai Yao Bang Yeon Hwang Wanying Wu Dean Guo | 2019 | Acta Pharmaceutica Sinica B2019，9，4： | 3 |
| 11 | Numerical simulation of gurney flaps lift-enhancement on a low reynolds number airfoil显示文摘Two-dimensional steady Reynolds-averaged Navier-Stokes(RANS) equations with transition shear stress transport(SST) model were solved to investigate the effects of Gurney flaps on the aerodynamic performance of a low Reynolds number airfoil. This airfoil was designed for flight vehicles operating at 20 km altitude with freestream velocity of 25 m/s. The chord length(C) of this airfoil is 5 m and the corresponding Reynolds number is 7.76×10~5. Gurney flaps with the heights ranging from 0.25%C to3%C were investigated. It has been shown that Gurney flaps can enhance not only the prestall lift but also lift-to-drag ratio in a certain range of angles of attack. Specially, at cruise angle of attack(3°), Gurney flap with the height of 0.5%C.can increase lift-to-drag ratio and lift coefficient by 1.6% and 12.8%, respectively. Furthermore, the mechanisms of Gurney flaps to improve the aerodynamic performance were illustrated by analyzing the surface pressure distribution, streamlines and trailing-edge flow structure for this low Reynolds number airfoil. Specially, distinguished from some other numerical researches, the flow details such as the laminar separation bubble and transition phenomena for low Reynolds number airfoil with Gurney flaps were investigated and it was found that Gurney flaps can delay the transition onset position at small angles of attack(≤2°). However, with the increase of angles of attack, Gurney flaps will promote the boundary layer transition. | HE Xi WANG JinJun YANG MuQing MA DongLi YAN Chao LIU PeiQing | 2017 | Science China(Technological Sciences)2017，60，10： | 3 |
| 12 | Structure and magnetostriction of Tb_(0.4)Nd_(0.6)(Fe_(0.8)Co_(0.2))_(1.90) alloy prepared by solid-state synthesis显示文摘Mechanical alloying (MA) and subsequent solid sintering process was used to prepare the Nd-containing magnetostrictive Tb0.4Nd0.6(Fe0.8Co0.2)1.90 alloy. The structure, thermal stability and phase transformation were investigated as functions of composition, milling process and annealing temperature. An amorphous phase was formed by high-energy ball milling for 5 h with the ball-to-powder weight ratio of 20:1, which crystallized into MgCu2-type and PuNi3-type crystalline structure with different annealing temperatures. The magnetoelastic properties were investigated by means of a standard strain technique. The high Nd-content (Tb,Nd)(Fe,Co)2 Laves phase for the composition Tb0.4Nd0.6(Fe0.8Co0.2)1.90 was synthesized by MA process plus annealing at 500 ℃ for 30 min. | Liu Jinjun Wang Rong Yin Hongyun Liu Xincai Si Pingzhan Du Juan | 2012 | Rare Metals2012，31，6： | 2 |
| 13 | Amplification of MPZL1/PZR promotes tumor cell migration through Src-mediated phosphorylation of cortactin in hepatocellular carcinoma显示文摘我们以前在 hepatocellular 癌(HCC ) 识别了体的拷贝数字改变(CNA ) 的 1 241 个区域。在现在的学习,我们发现那新奇周期性的焦点的 amplicon, 1q24.1-24.2,在 HCC 指向 MPZL1 基因。尤其是,在 MPZL1 和 HCC 标本的 intrahepatic 转移的表示层次之间有积极关联。MPZL1 能显著地提高 HCC 房间的迁移、变形的潜力。而且,我们发现 MPZL1 由支持 HCC 房间移植的机制之一由导致支持 metastatic 蛋白质的 phosphorylation 和激活, cortactin。另外,我们发现 Src kinase 调停 cortactin 的 phosphorylation 和激活由 MPZL1 overexpression 导致了。一起拿,这些调查结果建议 MPZL1 是拷贝数字扩大的一个周期性的区域在 HCC 目标为 1q24.1-24.2 的新奇支持 metastatic 基因。 | Deshui Jia Ying Jing Zhenfeng Zhang Li Liu Jie Ding Fangyu Zhao Chao Ge Qifeng Wang Taoyang Chen Ming Yao Jinjun Li Jianren Gu Xianghuo He | 2014 | Cell Research2014，24，2： | 2 |
| 14 | Cardiopulmonary resuscitation and termination of resuscitation on out-of-hospital cardiac arrest in China显示文摘To the Editor: Out-of-hospital cardiac arrest (OHCA) is a major public health challenge. Early initiation, good quality cardiopulmonary resuscitation (CPR), and the use of an automated external defibrillator (AED) have been reported to significantly improve the survival and long-term outcomes in survivors of OHCA. | Xiaojun He Yang Liu Sijia Tian Jun Liang Shengmei Niu Jinjun Zhang | 2022 | Chinese Medical Journal2022，，9： | 2 |
| 15 | Effects of flexibility on aerodynamic performance of delta wings with different sweep angles显示文摘Force measurement and surface oil flow visualization experiments were conducted in a wind tunnel to investigate the effects of flexibility on aerodynamic performance of delta wings with different sweep angles.The experimental results indicate that the maximum lift coefficient is increased and the stall angle is delayed as the sweep angle increases for both rigid and flexible wings.It is also found that the maximum lift coefficients of the flexible wings with a sweep angle from 35° to 50° are higher than those of the rigid ones.The increment of the maximum lift coefficient in particular achieves 32.9% compared with the case without lift enhancement for the 40° flexible delta wing.Moreover,the surface oil flow visualization experiments show that the stall of the flexible wing of the moderate low sweep angle is accompanied by helical flow structure,while the vortex bursting appears on the corresponding rigid wing. | LIU Yang,ZUO LinXuan & WANG JinJun Institute of Fluid Mechanics,Beijing University of Aeronautics and Astronautics and Fluid Mechanics Key Laboratory,Ministry of Education,Beijing 100191,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，5： | 2 |
| 16 | SaC‐FRAPP: a scalable and cost‐effective framework for privacy preservation over big data on cloud显示文摘 | Xuyun Zhang Chang Liu Surya Nepal Chi Yang Wanchun Dou Jinjun Chen | 2013 | Concurrency Computat: Pract Exper2013，，18： | 2 |
| 17 | Structure and magnetic properties of mechanically alloyed Tb_(0.2)Pr_(0.8)(Fe_(0.4)Co_(0.6))_(1.93) and magnetostriction of its epoxy composite显示文摘The C15 Laves phase with composition Tb0.2Pr0.8(Fe0.4Co0.6)1.93 was synthesized by mechanical alloying (MA) and subsequent annealing process. The structure and magnetic properties of Tb0.2Pr0.8(Fe0.4Co0.6)1.93 were investigated by means of X-ray diffraction (XRD), a vibrating sample magnetometer, and a standard strain technique. The effect of annealing on the structure and magnetic properties was studied. The analysis of XRD shows that the high Pr-content Tb0.2Pr0.8(Fe0.4Co0.6)1.93 alloy with the single phase of MgCu2-type structure can be success-fully synthesized by MA method. The sample annealed at 450°C is found to have a coercivity of 196 kA/m at room temperature. An ep-oxy/Tb0.2Pr0.8(Fe0.4Co0.6)1.93 composite was produced by a cold isostatic pressing technique. A large magnetostriction of 400 ppm, at an ap-plied magnetic field of 800 kA/m, was found for the composite. The epoxy-bonded Tb0.2Pr0.8(Fe0.4Co0.6)1.93 composite combines a high mag-netostriction with a significant coercivity, which is a promising magnetostrictive material. | LIU Jinjun LIU Xincai PAN Jing JIANG Chengyong | 2009 | Rare Metals2009，28，1： | 2 |
| 18 | The Geochemical Characteristics and Its Implication of Organic Matter Enrichment Conditions in the Upper Cretaceous Oil Shale Sequences of the Songliao Basin(NE China)显示文摘The Songliao Basin is the largest Cretaceous lacustrine rift basin located in northeastern China.It has attracted widespread attention due to the development of two oil shale sequences in the upper Cretaceous K2qn1 and K2n2(Liu et al.,2011;Bechtel et al.,2012;Jia et al.,2013).The oil shale provides valuable information about | SONG Yu LIU Zhaojun MENG Qingtao XU Jinjun | 2015 | Acta Geologica Sinica(English Edition)2015，89，A01： | 2 |
| 19 | Highly stableβ‑ketoenamine‑based covalent organic frameworks(COFs):synthesis and optoelectrical applications显示文摘Covalent organic frameworks(COFs)are one class of porous materials with permanent porosity and regular channels,and have a covalent bond structure.Due to their interesting characteristics,COFs have exhibited diverse potential applications in many felds.However,some applications require the frameworks to possess high structural stability,excellent crystallinity,and suitable pore size.COFs based onβ-ketoenamine and imines are prepared through the irreversible enol-to-keto tautomerization.These materials have high crystallinity and exhibit high stability in boiling water,with strong resistance to acids and bases,resulting in various possible applications.In this review,we frst summarize the preparation methods for COFs based onβ-ketoenamine,in the form of powders,flms and foams.Then,the efects of diferent synthetic methods on the crystallinity and pore structure of COFs based onβ-ketoenamine are analyzed and compared.The relationship between structures and diferent applications including fuorescence sensors,energy storage,photocatalysis,electrocatalysis,batteries and proton conduction are carefully summarized.Finally,the potential applications,large-scale industrial preparation and challenges in the future are presented. | Yaqin Li Maosong Liu Jinjun Wu Junbo Li Xianglin Yu Qichun Zhang | 2022 | Frontiers of Optoelectronics2022，15，3： | 2 |
| 20 | A novel FDTD formulation for Dispersive Media显示文摘 | Liu Shaobin Yuan Naichang Mo Jinjun | 2003 | IEEE Microwave and Wireless Components Letters2003，13，5： | 1 |
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