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| 1 | Effects of End-Bend and Curved Blades on the Flow Field and Loss of a Compressor Linear Cascade in the Design Condition显示文摘Curved blade and end-bend blade are considered as effective passive control methods for improving the aerodynamic performance of a compressor cascade,and their applicability also needs to be further studied.A highly-loaded compressor linear cascade in the design condition was taken as the research objective in this paper.Numerical simulation was used to study the positive and negative effects of these methods on the flow loss of the cascade by redistributing the vortex structures.Results show that:the curved blade could reduce the flow loss to 2.55%,while the end-bend blade and the end-bend+curved blade increase it to 10.58%and 2.19%,respectively.The positive effect of the curved blade weakens the strength and scale of Concentrated Shedding Vortex(CSV),which accounts for 59.2%of the total flow loss.The negative effect of the end-bend blade exacerbates the low-energy fluid clusters from the end wall and wake into CSV.Finally,the end-bend+curved blade can take their own strengths,but it enhances the twisting motion of Passage Vortex(PV)and CSV,which makes it fail to reduce the flow loss.Therefore,the positive and negative effects of these methods on the flow loss of a compressor cascade are much clearer.In addition,we also predict the potential danger of the end-bend blade in the negative incidence conditions and provides some suggestion for future study. | KAN Xiaoxu WU Wanyang YANG Ling ZHONG Jingjun | 2019 | Journal of Thermal Science2019，28，4： | 4 |
| 2 | First experimental constraints on WIMP couplings in the effective field theory framework from CDEX显示文摘We present weakly interacting massive particles(WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment(CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level(C.L.) and improve over the current bounds in the low mχregion. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the m_(χ)<6 GeV/c^(2) region. | Yi Wang Zhi Zeng Qian Yue LiTao Yang KeJun Kang YuanJing Li Mehment Agartioglu HaiPeng An JianPing Chang JingHan Chen YunHua Chen JianPing Cheng Cheng Yi Chiang WenHan Dai Zhi Deng ChangHao Fang XinPing Geng Hui Gong QiuJu Guo XuYuan Guo HongJian He Li He ShengMing He JinWei Hu TuChen Huang HanXiong Huang HaiTao Jia LiPing Jia Xi Jiang HauBin Li JianMin Li Jin Li MingXuan Li RenMingJie Li Xia Li YuLan Li Bin Liao FongKay Lin ShinTed Lin ShuKui Liu YanDong Liu Yu Liu YuanYuan Liu ZhongZhi Liu Hao Ma YuCai Mao QiYuan Nie JinHua Ning Hui Pan NingChun Qi Jie Ren XiChao Ruan ChangSong Shang Vivek Sharma Ze She Lakhwinder Singh Monoj Kumar Singh TianXi Sun ChangJian Tang WeiYou Tang Yang Tian GuangFu Wang Li Wang Qing Wang Yu Chen Wang YunXiang Wang Zhen Wang Henry Tsz-King Wong ShiYong Wu YuCheng Wu HaoYang Xing Yin Xu Tao Xue YuLu Yan Nan Yi ChunXu Yu HaiJun Yu JianFeng Yue Ming Zeng BingTao Zhang Lei Zhang FengShou Zhang ZhenYu Zhang KangKang Zhao MingGang Zhao JiFang Zhou ZuYing Zhou JingJun Zhu | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，8： | 3 |
| 3 | Electro-optic lithium niobate metasurfaces显示文摘Many applications of metasurfaces require an ability to dynamically change their properties in the time domain. Electrical tuning techniques are of particular interest, since they pave a way to on-chip integration of metasurfaces with optoelectronic devices.In this work, we propose and experimentally demonstrate an electro-optic lithium niobate(EO-LN) metasurface that shows dynamic modulations to phase retardation of transmitted light. Quasi-bound states in the continuum(QBIC) are observed from this metasurface. By applying external electric voltages, the refractive index of lithium niobate(LN) is changed by Pockels EO nonlinearity, leading to efficient phase modulations to the transmitted light around the QBIC wavelength. The EO-LN metasurface developed in this study opens up new routes for potential applications in the field of displaying, pulse shaping, and spatial light modulating. | BoFeng Gao MengXin Ren Wei Wu Wei Cai JingJun Xu | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，4： | 3 |
| 4 | First results on ^(76)Ge neutrinoless double beta decay from CDEX-1 experiment显示文摘We report the first results on ^(76)Ge neutrinoless double beta decay from stage one of the China dark-matter experiment(CDEX).A p-type point-contact high-purity germanium detector with a mass of 994 g has been installed to detect neutrinoless double beta decay events, as well as to directly detect dark matter particles. An exposure of 304 kg d has been analyzed over a wide spectral band from 500 keV to 3 MeV. The average event rate obtained was about 0.012 counts per keV per kg per day over the 2.039 MeV energy range. The half-life of ^(76)Ge neutrinoless double beta decay derived based on this result is T^(0ν)1/2>6.4×10^(22) yr(90% C.L.). An upper limit on the effective Majorana-neutrino mass of 5.0 eV has been achieved. | Li Wang Qian Yue KeJun Kang JianPing Cheng YuanJing Li TszKing Henry Wong ShinTed Lin JianPing Chang JingHan Chen QingHao Chen YunHua Chen Zhi Deng Qiang Du Hui Gong Li He QingJu He JinWei Hu HanXiong Huang TengRui Huang LiPing Jia Hao Jiang HauBin Li Hong Li JianMin Li Jin Li Jun Li Xia Li XueQian Li YuLan Li FongKay Lin ShuKui Liu Hao Ma JingLu Ma XingYu Pan Jie Ren XiChao Ruan ManBin Shen Vivek Sharma Lakhwinder Singh Manoj Kumar Singh Manoj Kumar Singh Arun Kumar Soma ChangJian Tang WeiYou Tang ChaoHsiung Tseng JiMin Wang Qing Wang ShiYong Wu YuCheng Wu HaoYang Xing Yin Xu Tao Xue LiTao Yang SongWei Yang Nan Yi ChunXu Yu HaiJun Yu WeiHe Zeng XiongHui Zeng Zhi Zeng Lan Zhang YunHua Zhang MingGang Zhao Wei Zhao JiFang Zhou ZuYing Zhou JingJun Zhu WeiBin Zhu ZhongHua Zhu | 2017 | Science China(Physics,Mechanics & Astronomy)2017，60，7： | 3 |
| 5 | Femtosecond laser-induced periodic surface structures on lithium niobate crystal benefiting from sample heating显示文摘Periodic surface structures were fabricated by irradiating lithium niobate(LN) crystals with femtosecond laser pulses at sample temperatures ranging from 28℃ to 800℃. Carrier density and conductivity of the samples were increased via heating LN, which inhibited coulomb explosion to obtain a uniform periodic surface structure. The periodic surface structures cover an area of 8 mm × 8 mm and have an average spacing of 174 5 nm.Meanwhile, the absorption of the processed sample is about 70% in the spectral range of 400–1000 nm, which is one order of magnitude higher than that of pure LN. Fabrication of periodic surface structures on heating LN with femtosecond laser pulses provides a possibility to generate nanogratings or nanostructures on wide-bandgap transparent crystals. | QIANG LI QIANG WU YANAN LI CHUNLING ZHANG ZIXI JIA JIANGHONG YAO JUN SUN JINGJUN XU | 2018 | Photonics Research2018，6，8： | 3 |
| 6 | Predictive value of MGMT promoter methylation on the survival of TMZ treated IDH-mutant glioblastoma显示文摘Objective:O6 methylguanine-DNA methyltransferase(MGMT)promoter methylation is a biomarker widely used to predict the sensitivity of IDH-wildtype glioblastoma to temozolomide therapy.Given that the IDH status has critical effects on the survival and epigenetic features of glioblastoma,we aimed to assess the role of MGMT promoter methylation in IDH-mutant glioblastoma.Methods:This study included 187 IDH-mutant glioblastomas and used 173 IDH-wildtype glioblastomas for comparison.KaplanMeier curves and multivariate Cox regression were used to study the predictive effects.Results:Compared with IDH-wildtype glioblastomas,IDH-mutant glioblastomas showed significantly higher(P<0.0001)MGMT promoter methylation.We demonstrated that MGMT promoter methylation status,as determined by a high cutoff value(≥30%)in pyrosequencing,could be used to significantly stratify the survival of 50 IDH-mutant glioblastomas receiving temozolomide therapy(cohort A);this result was validated in another cohort of 25 IDH-mutant glioblastomas(cohort B).The median progression-free survival and median overall survival in cohort A were 9.33 and 13.76 months for unmethylated cases,and 18.37 and 41.61 months for methylated cases,and in cohort B were 6.97 and 9.10 months for unmethylated cases,and 23.40 and 26.40 months for methylated cases.In addition,we confirmed that the MGMT promoter methylation was significantly(P=0.0001)correlated with longer OS in IDH-mutant patients with GBM,independently of age,gender distribution,tumor type(primary or recurrent/secondary),and the extent of resection.Conclusions:MGMT promoter methylation has predictive value in IDH-mutant glioblastoma,but its cutoff value should be higher than that for IDH-wildtype glioblastoma. | Ruichao Chai Guanzhang Li Yuqing Liu Kenan Zhang Zheng Zhao Fan Wu Yuzhou Chang Bo Pang Jingjun Li Yangfang Li Tao Jiang Yongzhi Wang | 2021 | Cancer Biology & Medicine2021，18，1： | 2 |
| 7 | Research Progress of Tip Winglet Technology in Compressor显示文摘In the present study,the research progress of tip winglets that control tip clearance leakage flow in compressors is reviewed.Firstly,the effects of tip leakage flow on the aerodynamic performance of the compressor are presented.Subsequently,the development of tip winglet technology is reviewed.Next,a series of studies on compressor tip winglet technology are conducted.Besides,the effects of tip winglets on the aerodynamic performance of rectangular cascades of low-speed and high-subsonic compressors,subsonic compressor rotor and transonic compressor rotor are discussed,respectively,and the control effect of tip winglet technology combined with tip groove design on tip leakage is investigated.Lastly,the subsequent development direction and research prospect of compressor tip winglet technology are presented. | ZHONG Jingjun WU Wanyang HAN Shaobing | 2021 | Journal of Thermal Science2021，30，1： | 2 |
| 8 | Research on Properties of Cr-Ni Films Prepared on Pyrolytic Graphite by Arc Ion Plating显示文摘 | Ma Tianjun Zhao Shike Deng Feng Hu Jingjun Wu Kun | 2012 | Physics Procedia2012，，： | 1 |
| 9 | Temperature Effect in (K_(0.5)Na_(0.5))_(0.2)(Sr_(0.75)Ba_(0.25))_(0.9)Nb_(2)0_(6): Cu Crystal Self-Pumped Phase-Conjugator显示文摘A reflectivity of 45%of the self-pumped phase-conjugate wave in (K_(0.5)Na_(0.5))_(0.2)(Sr_(0.75)Ba_(0.25))_(0.9)Nb_(2)0_(6)-Cn crystal at the environmental temperature T~70℃ has been obtained.The temperature effect in this kind of self-pumped phase-conjugator is studied. | XU Jingjun LIU Simin WU Yuanqing ZHANG Guangyin SUN Daliang SONG Yongyuan CHEN Huanchu | 1992 | Chinese Physics Letters1992，9，7： | 1 |
| 10 | All-optical modulation of quantum states by nonlinear metasurface显示文摘Metasurfaces have proven themselves an exotic ability to harness light at nano-scale,being important not only for classical but also for quantum optics.Dynamic manipulation of the quantum states is at the heart of quantum information processing;however,such function has been rarely realized with metasurfaces so far.Here,we report an all-optical dynamic modulation of the photonic quantum states using the nonlinear metasurface.The metasurface consists of a metallic nanostructure combined with a photoisomerizable azo layer.By tuning the plasmonic resonance through optically switching the azo molecules between their binary isomeric states,we have realized dynamic control of transmission efficiencies of orthogonally polarized photons and also the phase delay between them,thereby an entangled state was efficiently controlled.As an illustration,a quantum state distillation has been demonstrated to recover a Bell state from a non-maximally entangled one to that with fidelities higher than 98%.Our work would enrich the functions of the metasurface in the quantum world,from static to dynamic modulation,making the quantum metasurface going practical. | Di Zhang Yang Chen Shengchao Gong Wei Wu Wei Cai Mengxin Ren Xifeng Ren Shuang Zhang Guangcan Guo Jingjun Xu | 2022 | Light(Science & Applications)2022，11，3： | 1 |
| 11 | Effects of transient forebrain ischemia and radix salviae miltiorrhezae(RSM) on extraeellular levels of monoamine neurotransmitters and metabolites in the gerbil striatum显示文摘 | Cheng Jingjun Kuang Peigen Wu Weiping | 1999 | Journal of Traditional Chinese Medicine1999，19，2： | 1 |
| 12 | Photorefractive Self-Bending and High-Performance KNSBN:Cu Crystal Self-Pumped Phase-Conjugator显示文摘The mechanism for the high-performance KNSBN:Cu crystal self-pumped phase-conjugator is first put forward in this letter as no-loop photorefractive self-bending succesive four-wave mixing interaction.And the photore fractive backscattering amplification was found to play a very important role in it. | ZHANG Guangyin XU Jingjun WU Yuanqing LIU Simin SUN Daliang SONG Yongyuan CHEN Huanchu | 1992 | Chinese Physics Letters1992，9，1： | 1 |
| 13 | Polyethylene glycol/carbon nanotube composite synthesis and characterization ofporous gel显示文摘 | Ren Ying Wu Jingjun Zhou Qiyun | 2014 | J Chem Eng of Chinese Univ2014，28，4： | 1 |
| 14 | Observation of modulated spontaneous emission of Rhodamine 6G in low refractive index contrast 1D-periodic gelatin film显示文摘The modulation of the spontaneous emission of Rhodamine 6G has been observed in one-dimensional periodic dielectric structure of dichromated gelatin film with refractive index contrast as low as 0.01. The spontaneous emission is enhanced at the band edges and inhibits in the band gap, which agree well with the theoretical analysis on the redistribution of the fractional local density of optical states. | LI Wei 1 , ZHANG XinZheng 1 , WANG ZhenHua 1 , WU Qiang 1 , LIU LongChang 1 , XU JingJun 1 & Tang BaiQuan 2 1 The MOE Key Laboratory of Weak-Light Nonlinear Photonics, TEDA Applied Physics School, Nankai University, Tianjin 300457, China 2 School of Physics, Nankai University, Tianjin 300071, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，1： | 0 |
| 15 | Principle, Method of Object-Relation Hypermedia Data Model and Its Application in the Multimedia Spatial Data Management显示文摘In this paper, a new multimedia data model, namely object-relation hypermedia data model (O-RHDM) which is an advanced and effective multimedia data model is proposed and designed based on the extension and integration of non first normal form (NF^2) multimedia data model. Its principle, mathematical description, algebra operation, organization method and store model are also discussed. And its specific application example in the multimedia spatial data management is given combining with the Hainan multimedia touring information system. | Wang, Jianhua Guo, Jingjun Zhu, Guorui Wu, Hehai | 2000 | Journal of Systems Engineering and Electronics2000，11，1： | 0 |
| 16 | A novel obstacle avoidance heuristic algorithm of continuum robot based on FABRIK显示文摘Obstacle avoidance and path planning of continuum robots are challenging tasks due to the hyper-redundant degree of freedoms(DOFs)and restricted working environments.Meanwhile,most current heuristic algorithm-based obstacle avoidance algorithms exist with low computational efficiency,complex solution process,and inability to add global constraints.This paper proposes a novel obstacle avoidance heuristic algorithm based on the forward and backward reaching inverse kinematics(FABRIK)algorithm.The update of key nodes in this algorithm is modeled as the movement of charges in an electric field,avoiding complex nonlinear operations.The algorithm achieves the robustness of inverse kinematics and path tracking in complex environments by imposing constraints on key nodes and determining the location of obstacles in advance.This algorithm is characterized by a high convergence rate,low computational cost,and can be used for real-time applications.The proposed approach also has wide applicability and can be applied to both mobile and fixed-base continuum robots.And it can be further extended to the field of hyper-redundant robots.The algorithm's effectiveness is further validated by simulating the path tracking and obstacle avoidance of a five-segment continuum robot in various environments and comparisons with classical methods. | WU HaoRan YU JingJun PAN Jie PEI Xu | 2022 | Science China(Technological Sciences)2022，65，12： | 0 |
| 17 | Mathematical Foundation of Visual Query Languageon Spatial Information显示文摘Visual Query Language on Spatial Information (SIVQL) is one kind of visual query language based on the extension of Query by Example (QBE). It is a visual operation based on graphics or media object, such as point, line and area elements. In this paper, the relation calculation and query function of SIVQL have been studied and discussed by using set theory and relation algebra. The theory foundation of SIVQL has been investigated by the mathematical method. Finally, its application examples are also given with the specific information system. | Wang Jianhua Guo Jingjun Yan Huiwu Zhu Guorui Wu Hehai | 2000 | Journal of Systems Engineering and Electronics2000，11，4： | 0 |
| 18 | Research on Calculation Method of Aerodynamic Parameters of Supersonic Probe Based on Gas Compressibility Factor显示文摘The supersonic multi-hole probe is an essential test tool for wind tunnel experiments, which is necessary to develop the basic research of improving the measurement accuracy and expanding the application of the probes. | ZHONG Jingjun HUANG Gangfeng WU Wanyang KAN Xiaoxu | 2022 | Journal of Thermal Science2022，31，1： | 0 |
| 19 | Li^(+)doping induced zero-thermal quenching in Cs_(3)Zn_(6-x-y)B_(9)O_(21):xEu^(3+),yLi^(+)(0≤x≤0.10,0.06≤y≤0.16)显示文摘Thermal stability is a crucial index to assess application value of high-power LEDs,which is related to lattice defects.Herein,an effective structure-engineering strategy is proposed to achieve excellent properties.Under the 394 nm excitation,Cs_3Zn_(5.94)B_9O_(21):0.06Eu^(3+)possesses two characteristic emissions peaked at 591 and 612 nm with limited thermal stability.By introducing Li^(+)ions into the lattice,the sample exhibits high color purity and excellent zero-thermal quenching because the defect contents of the phosphor can be effectively modulated via charge-compensation effect.Then,under the stimulus of high temperature,the corresponding trap levels with a suitable depth(E=1.27 eV)will release electrons to recombine with the luminescent centers,compensating for the energy loss.The study provides a meaningful guide for optimizing and designing novel functional photoluminescent materials. | Yuxing Bai Liwei Wu Qilin Cheng Li Wu Yongfa Kong Yi Zhang Jingjun Xu | 2023 | Journal of Rare Earths2023，41，10： | 0 |
| 20 | Bacterial coinfections contribute to severe COVID-19 in winter显示文摘Dear Editor,Although most cases of COVID-19 caused by SARS-CoV-2 Omicron variants are mild or asymptomatic worldwide,coinfection with SARS-CoV-2 and other respiratory pathogens may still aggravate the severity of the illness.1,2 The current literature indicates that coinfection with COVID-19 could occur in 3.70%–9.7%of patients.1,3,4 The proportion of bacterial,and other respiratory viral coinfections may range from 3.02%to 9.7%and 5.41%to 6.61%,respectively.However,these studies demonstrated that coinfections with respiratory pathogens are not common. | Hui Fan Li Zhou Jingjun Lv Shimin Yang Guozhong Chen Xinjin Liu Chunyan Han Xue Tan Shengnan Qian Zegang Wu Shan Yu Ming Guo Chengliang Zhu Yu Chen Ke Lan | 2023 | Cell Research2023，33，7： | 0 |
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