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| 1 | Application of ^(137)Cs fingerprinting technique to interpreting sediment production records from reservoir deposits in a small catchment of the Hilly Loess Plateau,China显示文摘According to variations of 137Cs and clay contents, 44 flood couplets were identified in a profile of res- ervoir deposit with a vertical length of 28.12 m in the Yuntaishan Gully. Couplet 27 at the middle of the profile had the highest average 137Cs content of 12.65 Bq·kg?1, which indicated the 1963s' deposits, then 137Cs content decreased both downward and upward in the profile. The second top and bottom couplets had average 137Cs contents of 2.15 Bq·kg?1 and 0.92 Bq·kg?1, respectively. By integrated analysis of reservoir construction and management history, variations of 137Cs contents over the profile, sediment yields of flood couplets and rainfall data during the period of 1958-1970, individual storms related to the flood couplets were identified. 44 floods with a total sediment yield of 2.36×104 m3 occurred and flood events in a year varied between 1 and 10 times during the period of 1960-1970. 7-10 flood events occurred during the wet period of 1961-1964 with very wet autumn, while only 1-2 events during the dry period of 1965-1969. Average annual specific sediment yield was 1.29×104 t·km?2·a?1 for the Yuntaishan Gully during the period of 1960-1970, which was slightly higher than 1.11 ×104 t·km?2·a?1 for the Upper Yanhe River Basin above the Ganguyi Hydrological Station and slightly lower than 1.40 ×104 t·km?2·a?1 for the nearby Zhifang Gully during the same period. Annual specific sediment yields for the Yuntaishan Gully were correlated to the wet season's rainfalls well. | ZHANG XinBao WEN ZhongMing FENG MingYi YANG QinKe ZHENG JinJun | 2007 | Science China Earth Sciences2007，50，2： | 13 |
| 2 | Evaluating the accuracy performance of Lucas-Kanade algorithm in the circumstance of PIV application显示文摘Lucas-Kanade(LK) algorithm, usually used in optical flow filed, has recently received increasing attention from PIV community due to its advanced calculation efficiency by GPU acceleration. Although applications of this algorithm are continuously emerging,a systematic performance evaluation is still lacking. This forms the primary aim of the present work. Three warping schemes in the family of LK algorithm: forward/inverse/symmetric warping, are evaluated in a prototype flow of a hierarchy of multiple two-dimensional vortices. Second-order Newton descent is also considered here. The accuracy & efficiency of all these LK variants are investigated under a large domain of various influential parameters. It is found that the constant displacement constraint, which is a necessary building block for GPU acceleration, is the most critical issue in affecting LK algorithm's accuracy, which can be somehow ameliorated by using second-order Newton descent. Moreover, symmetric warping outbids the other two warping schemes in accuracy level, robustness to noise, convergence speed and tolerance to displacement gradient, and might be the first choice when applying LK algorithm to PIV measurement. | PAN Chong XUE Dong XU Yang WANG JinJun WEI RunJie | 2015 | Science China(Physics,Mechanics & Astronomy)2015，58，10： | 9 |
| 3 | Prophylactic vertebroplasty procedure applied with a resorbable bone cement can decrease the fracture risk of sandwich vertebrae:long-term evaluation of clinical outcomes显示文摘A sandwich vertebra is formed after multiple osteoporotic vertebral fractures treated by percutaneous vertebroplasty,which has a risk of developing new fractures.The purpose of our study was to(i)investigate the occurrence of new fractures in sandwich vertebra after cement augmentation procedures and to(ii)evaluate the clinical outcomes after prophylactic vertebral reinforcement applied with resorbable bone cement.From June 2011 to 2014,we analysed 55 patients with at least one sandwich vertebrae and treated with percutaneous vertebroplasty.Eighteen patients were treated by prophylactic vertebroplasty with a resorbable bone cement to strengthen the sandwich vertebrae as the prevention group.The others were the non-prevention group.All patients were examined by spinal radiographs within 1 day,6 months,12 months,24 months and thereafter.The incidence of sandwich vertebra is 8.25%(55/667)in our study.Most sandwich vertebrae(69.01%,49/71)are distributed in the thoracic-lumbar junction.There are 24 sandwich vertebrae(18 patients)and 47 sandwich vertebrae(37 patients)in either prevention group or non-prevention group,respectively.No significant difference is found between age,sex,body mass index,bone mineral density,cement disk leakage,sandwich vertebrae distribution or Cobb angle in the two groups.In the follow-up,8 out of 37(21.6%)patients(with eight sandwich vertebrae)developed new fractures in non-prevention’group,whereas no new fractures were detected in the prevention group.Neither Cobb angle nor vertebral compression rate showed significant change in the prevention group during the follow-up.However,in the non-prevention group,we found that Cobb angle increased and vertebral height lost significantly(P<0.05).Prophylactic vertebroplasty procedure applied with resorbable bone cement could decrease the rate of new fractures of sandwich vertebrae. | Pu Jia Hai Tang Hao Chen Li Bao Fei Feng He Yang Jinjun Li | 2017 | Regenerative Biomaterials2017，4，1： | 8 |
| 4 | Characterization and reactivity of biogenic manganese oxides for ciprofloxacin oxidation显示文摘Biogenic manganese oxides(BioMnOx) were synthesized by the oxidation of Mn(II) with Mnoxidizing bacteria Pseudomonas sp. G7 under different initial pH values and Mn(II) dosages, and were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and UV-Vis absorption spectroscopy. The crystal structure and Mn oxidation states of BioMnOx depended on the initial pH and Mn(II) dosages of the medium. The superoxide radical(O.-2) was observed in Mn-containing(III/IV) BioMnOxsuspensions by electron spin resonance measurements. BioMnOx(0.4)-7, with mixed valence of Mn(II/III/IV) and the strongest O.-2signals, was prepared in the initial pH 7 and Mn(II) dosage of 0.4 mmol/L condition, and exhibited the highest activity for ciprofloxacin degradation and no Mn(II) release. During the degradation of ciprofloxacin, the oxidation of the Mn(II) formed came from biotic and abiotic reactions in BioMnOx suspensions on the basis of the Mn(II) release and O.-2formation from different BioMnOx. The degradation process of ciprofloxacin was shown to involve the cleavage of the hexatomic ring having a secondary amine and carbon-carbon double bond connected to a carboxyl group, producing several compounds containing amine groups as well as small organic acids. | Jinjun Tu Zhendong Yang Chun Hu Jiuhui Qu | 2014 | Journal of Environmental Sciences2014，26，5： | 7 |
| 5 | A pigeon-inspired optimization algorithm for many-objective optimization problems显示文摘Dear editor,Swarm intelligence optimization algorithms are inspired by the behaviour of biological groups in nature. Such algorithms have the advantages of a clear structure, simple operation, comprehensible principles, strong parallelism, effective search abilities, and strong robustness. They can effectively solve difficult problems that traditional methods cannot. | Zhihua CUI Jiangjiang ZHANG Yechuang WANG Yang CAO Xingjuan CAI Wensheng ZHANG Jinjun CHEN | 2019 | Science China(Information Sciences)2019，62，7： | 6 |
| 6 | Recent development of vortex ring impinging onto the wall显示文摘It has been more than one hundred years for the study on vortex structure,which is a very important flow structure in the fluid mechanics.Recently,the interaction between vortex ring and solid wall has attracted more and more attentions,for not only it is a very common phenomenon in the engineering,but also it could benefit the understanding of the mechanism of interaction between the vortex and the boundary layer.The interaction between the vortex ring and the wall is reviewed in this paper,including the evolution of vortex ring,the mechanics of vortex ring azimuthal instabilities,the achievements of synthetic vortex ring impinging onto the solid wall,its potential application to heat transfer,and the influence of vortex ring compression.Besides,the latest results of vortex ring impinging onto porous wall are presented,and the future possible investigation direction on this issue is suggested. | XU Yang WANG JinJun | 2013 | Science China(Technological Sciences)2013，56，10： | 5 |
| 7 | 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 |
| 8 | Xenobiotics and loss of tolerance in primary biliary cholangitis显示文摘Data from genome wide association studies and geoepidemiological studies established that a com-bination of genetic predisposition and environmental stimulation is required for the loss of tolerance in primary biliary cholangitis(PBC).The serologic hallmark of PBC are the presence of high titer anti-mitochondrial autoantibodies(AMA)that recognize the lipoyl domain of the mitochondrial pyruvate dehydrogenase E2(PDC--E2)subunit.Extensive efforts have been directed to investigate the molecular basis of AMA.Recently,experimental data has pointed to the thesis that the breaking of tolerance to PDC--E2 is a pivotal event in the initial etiology of PBC,including environmental xenobiotics including those commonly found in cos-metics and food additives,suggesting that chemical modification of the PDC--E2 epitope may render its vulnerable to become a neo-antigen and trigger an immune response in genetically susceptible hosts.Here,we will discuss the natural history,genetics and immunobiology of PBC and structural constraints of PDC--E2 in AMA recognition which makes it vulnerable to chemical modification. | Jinjun Wang Guoxiang Yang Alana Mari Dubrovsky Jinjung Choi Patrick SC Leung | 2016 | World Journal of Gastroenterology2016，22，1： | 4 |
| 9 | IGFBP7 regulates sepsis-induced epithelial-mesenchymal transition through ERK1/2 signaling显示文摘The epithelial-mesenchymal transition(EMT)process results in fibrosis of renal tubular epithelial cells and is of great importance in the development of acute kidney injury(AKI).Urinary IGF-binding protein-7(IGFBP7)was obviously increased in AKI and is considered to be a biomarker for AKI.However,whether it has an effect on the inhibition of lipopolysaccharide(LPS)-induced EMT in human HK2 cells and on that of cecal ligation and puncture(CLP)-induced EMT in human HK2 cells and in mice remains to be elucidated.Western blot analysis was performed to examine the phosphorylation of ERK1/2 level and expressions of IGFBP7,ERK1/2,EMT markers,such as E-cadherin,α-SMA,and vimentin,and EMT regulatory factors,such as Snail,transforming growth factor-β1(TGF-β1),and connective tissue growth factor(CTGF).The levels of IGFBP7,TGF-β1,and CTGF were detected by enzyme linked immunosorbent assay(ELISA).Concentrations of creatinine(Cr),blood urea nitrogen(BUN),and albumin(ALB)were measured by biochemical analysis.Here,we found that LPS promoted EMT and ERK1/2 activation in HK2 cells,which were inhibited by silencing of IGFBP7.Furthermore,IGFBP7 overexpression significantly increased EMT and ERK1/2 activation in HK2 cells,which were inhibited by ERK1/2 signaling inhibitor PD98059.IGFBP7 knockdown effectively attenuated renal fibrosis,concentrations of Cr,BUN and ALB,and activation of ERK1/2 signaling in CLP-induced mice.These results suggest that inhibiting IGFBP7 can effectively protect the renal tubular epithelial cells from EMT induced by LPS or CLP both in vitro and in vivo,which may be associated with inactivation of ERK1/2 signaling. | Xiaolin Wang Yan Li Zhenzhen Zhao Yan Meng Jinjun Bian Rui Bao Kaimin Zhu Tao Yang | 2019 | Acta Biochimica et Biophysica Sinica2019，51，8： | 3 |
| 10 | 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 |
| 11 | Surface composites fabricated by vacuum infiltration casting technique显示文摘Alumina (Al2O3) particles reinforced copper matrix surface composites were fabricated on the bronze substrate using the vacuum infiltration casting technique. Three cases were obtained in the vacuum infiltration casting technique: no infiltration, partial infiltration and full infiltration (the thickness of preforms do not exceed 3.5 mm). The reason of no infiltration is that the vacuum degree is not enough so that the force acting on the liquid metal is lower than the resistance due to the surface tension. Partial infil- tration is because of somewhat lower vacuum degree and pouring temperature. Full desired infiltration is on account of suitable in- filtration casting conditions, such as vacuum degree, pouring temperature, grain size and preheating temperature of the preform. The most important factor of affecting formation of surface composites is the vacuum degree, then pouring temperature and particle size. The infiltration mechanism was discussed on the bases of different processing conditions. The surface composite up to 3.5 mm in thickness with uniformly distributed Al2O3 particles could be fabricated via the vacuum infiltration casting technique. | Guirong Yang Yuan Hao Wenming Song Jinjun Lii Ying Ma | 2005 | Journal of University of Science and Technology Beijing2005，12，5： | 3 |
| 12 | Relational stability and alliance performance in supply chain显示文摘 | Jie Yang Jinjun Wang Christina W.Y. Wong Kee-Hung Lai | 2007 | Omega2007，，4： | 2 |
| 13 | A green method for synthesizing novel nanoparticles and their application in flexible conductive patterns显示文摘A general and unified approach to synthesize Ag,Cu and Au nanoparticles(NPs)is developed at room temperature in air atmosphere under ultrasonication in poly(N-vinylpyrrolidone)(PVP)solutions with ascorbic acid and glucose as the reducing and nucleation agents,respectively.XRD,TEM,and HR-TEM analysis of the Ag,Cu,and Au NPs confirm purity and average diameters of 15.5±2.0 nm,50±3.0 nm,and 10±1.0 nm,respectively.An ultrasonic-assisted mechanism,wherein reduction occurs readily and produces anti-oxidation particles,is proposed and discussed.Fast infrared sintering was used to avoid damaging the substrate of conductive patterns whose resistivity at 10 W(~50℃)sintering power for less than 6 min reached up to 10±0.5 μΩ cm,40±3.0 μΩ cm,and 280±5 μΩ cm for Ag,Cu,and Au patterns,respectively.Paper-based electrodes were produced successfully and exhibited excellent flexibility and good conductivity.The potential of this method for large scale production is discussed. | Wei Li Qiongying Cen Wenjiang Li Zihan Zhao Wenlong Yang Yuqian Li Minfang Chen Guang Yang Jinjun Yang | 2020 | Journal of Materiomics2020，6，2： | 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 | Alternative splicing and cancer: a systematic review显示文摘The abnormal regulation of alternative splicing is usually accompanied by the occurrence and development of tumors,which would produce multiple different isoforms and diversify protein expression.The aim of the present study was to conduct a systematic review in order to describe the regulatory mechanisms of alternative splicing,as well as its functions in tumor cells,from proliferation and apoptosis to invasion and metastasis,and from angiogenesis to metabolism.The abnormal splicing events contributed to tumor progression as oncogenic drivers and/or bystander factors.The alterations in splicing factors detected in tumors and other mis-splicing events(i.e.,long non-coding and circular RNAs)in tumorigenesis were also included.The findings of recent therapeutic approaches targeting splicing catalysis and splicing regulatory proteins to modulate pathogenically spliced events(including tumor-specific neo-antigens for cancer immunotherapy)were introduced.The emerging RNA-based strategies for the treatment of cancer with abnormally alternative splicing isoforms were also discussed.However,further studies are still required to address the association between alternative splicing and cancer in more detail. | Yuanjiao Zhang Jinjun Qian Chunyan Gu Ye Yang | 2021 | Signal Transduction and Targeted Therapy2021，6，3： | 2 |
| 16 | STRATEGY FOR DIESEL ROTARY ENGINE WITH COMMON RAIL INJECTION SYSTEM显示文摘直接注射低压缩率柴油机旋转引擎被设计并且学习了发现电子控制高压力的适当应用普通栏杆注射系统。当前的开发集中于应用燃料注射和点火策略,特别有关注射者,点火来源,和燃烧室的燃烧配置。原型引擎,与 Bosch 普通栏杆系统和高效装备了联合起来的电子控制(ECU ) ,相应地被设计。研究证明一个普通栏杆注射系统的集成并且主要并且飞行员决斗注射者配置,帮助了发光塞子点火设备和灵活 ECU,代表一条有希望的途径改进低压缩率柴油机的潜力旋转引擎。当前,引擎能在 6kr 中心点 min~ 跑(-1) 稳定地并且力量是大约 68 kW/(4 kr 中心点 min^(-1)) 。 | WU Jinjun HAI Jingtao SHI Jianzhong LI Xuesong YANG Qing WANG Shangyong | 2006 | Chinese Journal of Mechanical Engineering2006，19，3： | 2 |
| 17 | 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 |
| 18 | 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 |
| 19 | Effect of aqueous extract of Sanweitanxiang powder on calcium homeostasis protein expression in ischemic-reperfusion injury rat heart显示文摘OBJECTIVE: To investigate the underlying mechanism of reduced myocardial ischemia-reperfusion (I/R) injury in rats using the traditionalTibetan medicine Sanweitanxiang powder (SWTX). METHODS: Rats were randomly divided into six groups (n=10) as follows: (a) propranolol dinitrate control group, given propranolol dinitrate 0.02 g/kg for 10 days before I/R, (b) SWTX with a high dose group, given SWTX 1.5 g/kg for 10 days before I/R, (c) SWTX with a medium dose group, given SWTX 1.25 g/kg for 10 days before I/R, (d) sham group (Sham), in which the rat heart was exposed by pericardiotomy but without I/R, (e) SWTX with a low dose group, given SWTX 1.0 g/kg for 10 days before I/R, and (f) I/R injury group. Rats were intragastrically pretreated with propranolol dinitrate orSWTX. After that, the operation to cause ischemia and reperfusion was conducted.The histopathologic changes of rat hearts were observed by hematoxylin and eosin staining and transmission electron microscopy. Ca2+ homeostasis protein expression was determined by western blot. RESULTS: After SWTX pretreatment, the development of ultrastructural pathological changes from IR injury was attenuated. A decrease in the expression of B-cell lymphoma 2 associated X protein, and an increase in the expression of B-cell lymphoma 2 were observed. An increased activation of extracellular signal regulated kinases were found. Compared with the sham group, the expression of sarcoplasmic reticulum calcium-ATPase, phospholamban, and calsequestrin were all up-regulated after pretreatment with SWTX. CONCLUSION: The protective mechanism of SWTX pretreatment on myocardial I/R injury might be related to its effect on maintaining the balance of calcium homeostasis in rat heart. | Mei Yang Shuna Zhang Shicun Ren Jinjun Wang Haixia Yun Sheng Yong Dejun Zhang Quanyu Yang Yiying Kou Dianxiang Lu Rili Ge | 2013 | Journal of Traditional Chinese Medicine2013，33，3： | 2 |
| 20 | A Throughput Maximization Strategy for Scheduling Transaction Intensive Workflows on SwinDeW-G显示文摘 | Liu Ke Chen Jinjun Yang Yun | 2008 | Concurrency and Computation: Practice and Experience2008，20，15： | 1 |
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