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| 1 | Oil Pocket's Bearing Capacity Analysis of Liquid Hydrostatic Worktable in Gantry Moving Milling Center显示文摘Durning the design process of hydrostatic rotary worktable,the processing and assembly tolerance,(the offset of worktable and the gap of the oil film’s thickness)is ignored.But it will cause that the real bearing of oil pocket deviates from the initial design value,and then the performance of rotary worktable will be reduced significantly.Up to now,no effort is found toward the research of influence of the processing and assembly tolerance on the performance of the rotary worktable.So the hydrostatic oil film is assumed as the elastomer in this paper,and then the bearing capacity of the oil pocket is studied with and without the mass offset of the worktable by taking an expression between the bearing capacity and the oil film’s thickness of the oil pocket as the deform compatibility equation.The influence of the processing tolerance of the oil sealing belt’s gap on the bearing capacity of the oil pocket is analyzed.In the light of the liquid hydrostatic worktable of Gantry Moving Milling Center using on the scene,the oil pocket’s pressure of the worktable is tested using Rotary Worktable Test System under the circumstance of the mass offset of the worktable and the gap tolerance of the oil sealing belt,and then the equivalent offset of worktable,the average pressure of the oil pocket and the actual thickness of the oil film are analyzed respectively.The test results show that the bearing capacity component of the oil pocket caused by G is consistent,and the component caused by M is relative to the position of the oil pocket.When the oil sealing belt’s gap is larger than the theoretical value,the bearing capacity of the oil pocket is smaller than the others;whereas the bearing capacity of the oil pocket is larger than the others.The maximum and minimum equivalent offsets are 0.256 4 mm and 0.047 5 mm,respectively,and the average oil pocket pressure varies from 0.345 MPa to 0.460 MPa,the maximum and minimum value of the actual oil film thickness are 109.976?m(No.7 oil pocket)and 93.467?m(No.10 oil pocket),respectively.The research results can be used to detect the offset of the worktable and the actual thickness of the oil film under processing and assembly tolerance,and provides a basis way for detecting the processing and assembly tolerance of rotary worktable signing reasonably of Gantry Moving Milling Center. | ZHAO Jianhua LIANG Yingna GAO Dianrong | 2014 | Chinese Journal of Mechanical Engineering2014，27，5： | 7 |
| 2 | Influence of Non-smooth Surface on Tribological Properties of Glass Fiber-epoxy Resin Composite Sliding against Stainless Steel under Natural Seawater Lubrication显示文摘With the development of bionics, the bionic non-smooth surfaces are introduced to the field of tribology. Although non-smooth surface has been studied widely, the studies of non-smooth surface under the natural seawater lubrication are still very fewer, especially experimental research. The influences of smooth and non-smooth surface on the frictional properties of the glass fiber-epoxy resin composite(GF/EPR) coupled with stainless steel 316 L are investigated under natural seawater lubrication in this paper. The tested non-smooth surfaces include the surfaces with semi-spherical pits, the conical pits, the cone-cylinder combined pits, the cylindrical pits and through holes. The friction and wear tests are performed using a ring-on-disc test rig under 60 N load and 1000 r/min rotational speed. The tests results show that GF/EPR with bionic non-smooth surface has quite lower friction coefficient and better wear resistance than GF/EPR with smooth surface without pits. The average friction coefficient of GF/EPR with semi-spherical pits is 0.088, which shows the largest reduction is approximately 63.18% of GF/EPR with smooth surface. In addition, the wear debris on the worn surfaces of GF/EPR are observed by a confocal scanning laser microscope. It is shown that the primary wear mechanism is the abrasive wear. The research results provide some design parameters for non-smooth surface, and the experiment results can serve as a beneficial supplement to non-smooth surface study. | WU Shaofeng GAO Dianrong LIANG Yingna CHEN Bo | 2015 | Chinese Journal of Mechanical Engineering2015，28，6： | 7 |
| 3 | Experimental Study on Influence of Dimples on Lubrication Performance of Glass Fiber-epoxy Resin Composite under Natural Seawater Lubrication显示文摘Bionic non-smooth surface is widely applied in metal and ceramics materials. In order to introduce this technology to high pressure seawater pump, the influence of bionic non-smooth surface on the engineering plastics used in pump should be investigated. The comparative tests are carried out with a ring-on-disc configuration under 800, 1000, 1200 and 1400 r/min in order to research the influence of the bionic non-smooth surface on glass fiber-epoxy resin composite(GF/EPR) under natural seawater lubrication. The disc surfaces are textured with five kinds of pits, which are semi-spherical, conical, cone-cylinder combined, cylindrical pits and through holes, respectively. A smooth surface is tested as reference. The results show that the lubrication performance of dimpled GF/EPR sample is much better than that of the smooth sample under all rotational speeds. The semi-spherical pits surface has more obvious friction reduction than the others, which shows that the least reduction is approximately 43.29% of smooth surface under 1200 r/min. However, the wear level is only marginally influenced by dimples. The surface morphology investigations disclose severe modifications caused by abrasive wear primarily. The results are helpful to vary friction properties of GF/EPR by non-smooth surface, or provide references to the design of non-smooth surfaces under certain condition. | WU Shaofeng GAO Dianrong LIANG Yingna CHEN Bo | 2017 | Chinese Journal of Mechanical Engineering2017，30，1： | 6 |
| 4 | Simplified unscented particle filter for nonlinear/non-Gaussian Bayesian estimation显示文摘Particle filters have been widely used in nonlinear/nonGaussian Bayesian state estimation problems.However,efficient distribution of the limited number of particles in state space remains a critical issue in designing a particle filter.A simplified unscented particle filter(SUPF) is presented,where particles are drawn partly from the transition prior density(TPD) and partly from the Gaussian approximate posterior density(GAPD) obtained by a unscented Kalman filter.The ratio of the number of particles drawn from TPD to the number of particles drawn from GAPD is adaptively determined by the maximum likelihood ratio(MLR).The MLR is defined to measure how well the particles,drawn from the TPD,match the likelihood model.It is shown that the particle set generated by this sampling strategy is more close to the significant region in state space and tends to yield more accurate results.Simulation results demonstrate that the versatility and estimation accuracy of SUPF exceed that of standard particle filter,extended Kalman particle filter and unscented particle filter. | Junyi Zuo Yingna Jia Quanxue Gao | 2013 | Journal of Systems Engineering and Electronics2013，24，3： | 6 |
| 5 | Friction and Wear Study on Friction Pairs with a Biomimetic Non-smooth Surface of 316L Relative to CF/PEEK under a Seawater Lubricated Condition显示文摘Current studies of a seawater axial piston pump mainly solve the problems of corrosion and wear in a slipper pair by selecting materials with corrosion resistance, self-lubrication, and wear resistance. In addition, an appropriate biomimetic non-smooth surface design for the slipper pair can further improve the tribological behavior. In this paper, 316 L stainless steel and CF/PEEK were selected to process the upper and bottom specimens, and the biomimetic non-smooth surface was introduced into the interface between the friction pair. The friction and wear tests were performed on a MMD-5 A tester at a rotation speed of 1000 r/min and load of 200 N under seawater lubricated condition. The results indicate that the main friction form of the smooth surface friction pair corresponds to abrasive wear and adhesive wear and that it exhibits a friction coe cient of 0.05–0.07, a specimen temperature of 56 ℃, a high wear rate, and surface roughness. Pits on the non-smooth surface friction pairs produced hydrodynamic lubrication and reduced abrasive wear, and thus the plowing e ect is their main friction form. The non-smooth surface friction pairs exhibit a friction coe cient of 0.03–0.04, a specimen temperature of 48 ℃, a low wear rate, and surface roughness. The study has important theoretical significance for enriching the lubrication, friction, and wear theory of a seawater axial piston pump, and economic significance and military significance for promoting the marine development and the national defense military. | Yingna Liang Dianrong Gao Bo Chen Jianhua Zhao | 2019 | Chinese Journal of Mechanical Engineering2019，32，4： | 5 |
| 6 | Immunization with autologous T cells enhances in vivo anti-tumor immune responses accompanied by up-regulation of GADD45β显示文摘Immunization with inactivated autoreactive T cells may induce idiotype anti-idiotypic reactions to deplete autoreac-tire T cells,which are involved in autoimmune diseases.However,it is unknown whether attenuated activated healthyautologous T-cell immunization could increase anti-tumor immune responses.To this end,C57B1/6 mice were immunizedwith attenuated activated autologous T cells.The splenocytes from immunized mice showed a higher proliferative abil-ity than that from naive mice.The special phenotype analysis showed that there were more CDS+T cells and CD62L+T cells in immunized mice after 24 h of culture with 10% fetal calf serum complete medium in vitro(P<0.01).Theseresults demonstrated that this immunization may activate T cells in vivo.Furthermore,the splenocytes from immunizedmice revealed resistance to activation-induced cell death(AICD)in vitro.To further study the relative genes that areresponsible for the higher proliferation and resistance to AICD,the expression of Fas/Fas ligand(FasL)and GADD45βwas measured by real-time PCR.The results indicated that GADD45β transcription was higher in the splenocytes fromimmunized mice than that in the naive mice.In addition,the Fas expression showed a parallel higher,but FasL did notchange obviously.To investigate the biologic functions induced by immunization in vivo,a tumor model was establishedby EL-4 tumor cell inoculation in C57/B1 mice.Mice receiving autologous T-cell immunization had significantly inhibitedtumor growth in vivo(P<0.01).This study implicated that immunization with attenuated activated autologous T cellsenhances anti-tumor immune responses that participate in tumor growth inhibition. | Li Wang~(1,2,*) Fang Du~(1,2,*) Qi Cao~(1,2) Huiming Sheng~(1,2) Baihua Shen~(1,2) Yan Zhang~(1,2) Yingna Diao~(1,2) Jingwu Zhang~(1,2) Ningli Li~(1,2) ~1Shanghai diao Tong UniversiO,School of Medicine,280 Chongqing Road,Shanghai 200025,China ~2Shanghai Institute of Immunology,280 Chongqing Road,Shanghai 200025,China | 2006 | Cell Research2006，16，8： | 5 |
| 7 | Microwave diagnostics of magnetic field strengths in solar flaring loops显示文摘We have performed microwave diagnostics of the magnetic field strengths in solar flaring loops based on the theory of gyrosynchrotron emission.From Nobeyama Radioheliograph observations of three flare events at 17 and 34 GHz,we obtained the degree of circular polarization and the spectral index of microwave flux density,which were then used to map the magnetic field strengths in post-flare loops.Our results show that the magnetic field strength typically decreases from ~800 G near the loop footpoints to~100 G at a height of 10-25 Mm.Comparison of our results with magnetic field modeling using a flux rope insertion method is also discussed.Our study demonstrates the potential of microwave imaging observations,even at only two frequencies,in diagnosing the coronal magnetic field of flaring regions. | ZHU Rui TAN BaoLin SU YingNa TIAN Hui XU Yu CHEN XingYao SONG YongLiang TAN GuangYu | 2021 | Science China(Technological Sciences)2021，64，1： | 3 |
| 8 | Laser Remelting of Plasma Sprayed NiCrAlY and NiCrAlY-Al_2O_3 Coatings显示文摘Two types of plasma sprayed coatings (NiCrAlY and NiCrAlY-A12O3) were remelted by a 5 kW cw CO2 laser. With increasing laser power and decreasing traverse speed in the ranges of 200-700 W and 5-30 mm/s respectively, the melted track grew in width and depth. In the optimum range of laser parameters, a homogeneous remelted layer without voids, cavities, unmelted particles and microcracks was formed. On the surface of remelted layers, Al203 and YAIO3 were detected. As a result of isothermal oxidation tests, weight gains of laser remelted coatings were obviously lower than that only plasma sprayed, especially laser remelted NiCrAlY-Al2O3 coatings. The effects of laser remelting and incorporation of A12O3 second phase in N1CrAlY matrix on high temperature oxidation resistance were discussed. | Yingna WU, Gang ZHA NC, Bingchun ZHANG, Zhongchao FENG and Yong LIANG Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China Fangjun LIU Key Laboratory for High Energy Density Beam Processing Technology, Beijing Aeronautical Manu | 2001 | Journal of Materials Science & Technology2001，17，5： | 3 |
| 9 | Composite thermal protection coating on woven silica fiber fabrics显示文摘A composite coating with inner and outer layers was prepared for the thermal protection of woven silica fiber fabrics.Using a sol mixture of a silica sol and AlF3/SiO2 particles mixed in the stoichiometric molar ratio for mullite,hollow silica spheres and short mullite fibers were added to the inner layer and outer layer,respectively.The phase composition and thermal evolution of the coating,along with the interfacial microstructure between the coating and the matrix,were characterized by means of X-ray diffraction,differential scanning calorimetry/thermogravimetry,scanning electron microscopy,and tensile strength testing.Mullite whiskers grew between 950°C and 1200°C and helped prevent thermal cracking during the drying and densification processes.The hollow silica spheres might play dual roles,weakening the adhesion between the coating and the fibers by reducing their direct contact,but strengthening the joining between the coating and substrate by embedding themselves among the fabrics. | LIU MengXia XUE Tao ZHAO YingNa LIU Shan LIU JiaChen | 2014 | Science China(Technological Sciences)2014，57，6： | 2 |
| 10 | Flying with the Dragon:Estimating Developing Countries’Gains from China’s Imports显示文摘As a large trading nation,China competes with importing countries'domestic and thirdcountry markets but also creates growth opportunities fo r exporters.Most studies on China trade shocks or 'China shocks'focuse on the impacts of import competition on developed economies.The present paper complements research on China shocks by exploring the other side of the trade exposure to China-China as the largest importer,rather than as an exporter.We analyze the effects of export expansion into China on the local labor markets of the exporting developing countries for the years 1992 to 2018.Using detailed export and employment data,we estimate employment pattern variations in manufacturing industries with exports from other developing countries as instruments for export exposure.We find that the increase in trade exposure to China in the world economy has caused extensive job gains in manufacturing industries in developing countries that were exporters.On average,our estimations show that this trade exposure created approximately 1.5 million additional jobs from 1992 to 2018,which made an important contribution to manufacturing industries in developing countries.Our empirical analysis also shows that trade had stabilizing effects on employment in the countries in our sample generally. | Xuefeng Qian Kalsoom Rafique Yingna Wu | 2020 | China & World Economy2020，28，5： | 2 |
| 11 | 有效使用小组活动的建议(英文)显示文摘为了突破以往传统语言教学中的哑巴英语的瓶颈,在当今的中国语言教学课堂中,交际能力受到越来越多的重视。交际能力的核心是相互交流,而小组活动则是进行相互交流的一种有效方式。这也是越来越多的教师在他们的语言课堂中开展小组活动的原因。在本文中作者将就教师和学生在小组活动中所碰到的问题进行讨论,并提出一些解决和避免这些问题的建议。 | Wu Yingna Zhongnan University of Economics and Law | 2002 | Chinese Journal of Applied Linguistics2002，25，1： | 2 |
| 12 | 基于手机信令大数据的京津冀城市群人口时空分布与流动特征分析显示文摘利用手机信令数据,以京津冀城市群为研究范围,以250 m×250 m网格为基本单元,识别京津冀城市群人口时空分布与流动特征。结果表明:北京和天津是京津冀城市群的主要人口集聚中心,且人口分布呈现非均匀放射状、沿主要交通干线分布,人口密度由城市中心向周边递减;北京、天津和石家庄是人口流动网络的主要中心,其人口流量远高于其他城市;城市群范围内的县际人口流动增长迅速,各区县的职住空间不平衡也比较突出。 | ZHANG Yingna 王悦 胡昊宇 袁春来 | 2023 | 地域研究与开发2023，42，3： | 2 |
| 13 | Development of Chrysomya megacephala at constant temperatures within its colony range in Yangtze River Delta region of China显示文摘Chrysomya megacephala (Fabricius,1794) is the most abundant and predominant species which arrives and colonizes a cadaver first in most parts of China.Therefore,its growth and development patterns have great implications in the estimation of the minimum postmortem interval (PMImin).In this study,C megacephala was collected from the Yangtze River Delta region and reared at seven constant temperatures ranging from 16 ℃ to 34 ℃.The developmental duration and accumulated degree hours,larval body length and morphological changes of C.megacephala were examined.Furthermore,we constructed three developmental models,isomorphen diagram,isomegalen diagram and thermal summation model,which can be used for estimating PMImin.The developmental durations of C.megacephala at 16 ℃,19 ℃,22 ℃,25 ℃,28 ℃,31 ℃ and 34 ℃ are (794.8 ± 14.7),(533.2 ± 10.1),(377.8 ± 16.8),(280.8 ± 15.1),(218.9 ± 8.5),(190.8 ± 10.1) and (171.8 ± 6.8) h,respectively.The developmental threshold temperature D0 is (11.41 ± 0.32) ℃,and the thermal summation constant K is (3 418.7 ± 137.0) degree hours.Regression analysis was conducted to obtain equations of the variation in larval body length with time after hatching,and variation in time after hatching with body length.Moreover,our study divides the intra-puparial morphological changes of C.megacephala into 11 sub-stages,and provides the time range experienced by each sub-stage.The results of this study provide fundamental development data for the use of C.megacephala in PMImin estimations. | Yingna Zhang Yu Wang Lijun Yang Luyang Tao Jiangfeng Wang | 2018 | Forensic Sciences Research2018，3，1： | 2 |
| 14 | Highly Efficient Adsorption of P-Xylene from Aqueous Solutions by Hierarchical Nanoporous Biochar Derived from Crab Shell显示文摘The global consumption of p-xylene(PX)for the production of polymers has raised serious concerns about its impact on the environment.As various reports have shown the risks that PX could pose to human health,research into cost-effective remedial methods to remove PX from the environment has gained attraction.In this work,a hierarchical porous crab shell biochar(KCS)was synthesized,characterized,and evaluated for its efficiency to remove PX from aqueous solution.The characterizations of KCS,including the porous structure,surface functional group,phase structure,and surface morphology,were discussed by N_(2) adsorption-desorption,FTIR,XRD,and SEM.Batch adsorption experiments showed that the maximum adsorption capacity of PX on KCS was 393 mg/g within 5 min,larger than most biological/biomass materials,mainly due to the higher specific surface area of 2046 m^(2)/g,and abundant lipophilic functional groups.Subsequent adsorption kinetics study indicated a pseudo-second-order model which implied that the adsorption of PX was due to chemisorption.Thermodynamic parameters showed that the values ofΔH°andΔG°were both negative,indicating that the PX adsorption process on KCS was spontaneous and exothermic.The performance of KCS in delivering a cost-effective,fast,and efficient solution for the removal of PX from aqueous solution would greatly benefit current environmental remediation efforts. | Yingna Chen Hailong Zhang Jian Guo Lu Cai Yaning Wang Xinxin Yao Wendong Song Lili Ji | 2021 | Journal of Renewable Materials2021，9，10： | 1 |
| 15 | Purification and biochemical characterization of FⅡa, a fibrinolytic enzyme from agkistrodon acutus venoms显示文摘 | Xiuxia L Jiashu C Yingna Z | 2001 | Toxicon2001，39，8： | 1 |
| 16 | Investigation on concentration distribution and mass flow rate measurement for gravity chute conveyor by optical tomography system显示文摘 | Yingna Zheng Qiang Liu Yang Li | 2006 | Measurement2006，39，7： | 1 |
| 17 | Molecular Detection of TYLCV Isolates from Xinjiang Autonomous Region of China and Analysis of Its DNA-A Genome Sequences显示文摘In 2012,the symptoms of dwarf plants,yellowed and curled leaves were observed in tomato,pepper,eggplant,datura,poinsettia,florists cyclamen and anthurium in Kashi,Tulufan and Yili regions of Xinjiang autonomous region in China.The results showed that all of the above seven species of plants could be infected by Tomato yellow leaf curl virus(TYLCV).We obtained the full-length DNA-A genome sequences of the virus isolate that KSCTo4,KSCTo16, KZPTo18 and KYCTo20 from tomato,KSCPe6 and KSCPe7 from pepper,KSCEg1from eggplant and KSCDa from datura.Each isolate had all of the characteristic features of Begomovirus genome.Virus isolate collected from different hosts had little difference in sequence,and shared the similarity of 99.0%-99.8% with each other.These isolate shared the similarity of 98.6%-99.5% with TYLCV isolate SH3,ZJ6,SD2A-7,HNSQ and HBBD reported in China. | Ding Yingna Li Shifang Zhang Sheng Cui Yuanyu Yang Hua He Wei Sun Xiaojun | 2013 | Plant Diseases and Pests2013，4，6： | 1 |
| 18 | Y Purification and biochemical characterization of F II (a), a fibrinolytic enzyme from Agkistrodon acutus venom 显示文摘 | Xiuxia L Jiashu C Yingna Z | 2001 | Toxicon2001，39，8： | 1 |
| 19 | Additive-free controllable fabrication of bismuth vanadates and their photocatalytic activity toward dye degradation显示文摘 | Guo YingNa Yang Xia Ma FengYan | 2010 | Applied Surface Science2010，256，： | 1 |
| 20 | A novel material preparation of density ceramics and fibre joining显示文摘 | Zhao Yingna Gao Shuijing Hou Guiqin | 2012 | Advanced Materials Research2012，，： | 1 |
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