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| 1 | Biphasic insulin aspart 30 improved glycemic control in Chinese patients with type 2 diabetes poorly controlled on oral glucose-lowering drugs: a subgroup analysis of the A1chieve study显示文摘 | Chen Liming Xing Xiaoyan Lei Minxiang Liu Jie Shi Yongquan Li Pengqiu Qin Guijun Li Chengjiang Li Yukun Wang Qing Gao Tianshu Hu Ling Wang Yangwei Yang Wenying | 2014 | Chinese Medical Journal2014，，2： | 19 |
| 2 | Numerical study of corner separation in a linear compressor cascade using various turbulence models显示文摘Three-dimensional corner separation is a common phenomenon that significantly affects compressor performance.Turbulence model is still a weakness for RANS method on predicting corner separation flow accurately.In the present study,numerical study of corner separation in a linear highly loaded prescribed velocity distribution(PVD) compressor cascade has been investigated using seven frequently used turbulence models.The seven turbulence models include Spalart–Allmaras model,standard k–e model,realizable k–e model,standard k–x model,shear stress transport k–x model,v^2–f model and Reynolds stress model.The results of these turbulence models have been compared and analyzed in detail with available experimental data.It is found the standard k–e model,realizable k–e model,v^2–f model and Reynolds stress model can provide reasonable results for predicting three dimensional corner separation in the compressor cascade.The Spalart–Allmaras model,standard k–x model and shear stress transport k–x model overestimate corner separation region at incidence of 0°.The turbulence characteristics are discussed and turbulence anisotropy is observed to be stronger in the corner separating region. | Liu Yangwei Yan Hao Liu Yingjie Lu Lipeng Li Qiushi | 2016 | Chinese Journal of Aeronautics2016，29，3： | 11 |
| 3 | Modified k-ω model using kinematic vorticity for corner separation in compressor cascades显示文摘A new method of modifying the conventional k-ω turbulence model for corner separation is proposed in this paper. The production term in the ω equation is modified using kinematic vorticity considering fluid rotation and deformation in complex geometric boundary conditions. The corner separation flow in linear compressor cascades is calculated using the original k-ω model, the modified k-ω model and the Reynolds stress model(RSM). The numerical results of the modified model are compared with the available experimental data, as well as the corresponding results of the original k-ω model and RSM. In terms of accuracy, the modified model, which significantly improves the performance of the original k-ω model for predicting corner separation, is quite competitive with the RSM. However, the modified model, which has considerably lower computational cost, is more robust than the RSM. | LIU YangWei YAN Hao FANG Le LULiPeng LI QiuShi SHAO Liang | 2016 | Science China(Technological Sciences)2016，59，5： | 7 |
| 4 | Investigation of model development for deterministic correlations associated with impeller-diffuser interactions in centrifugal compressors显示文摘The average-passage equation system(APES)provides a rigorous framework to account for the deterministic unsteady effects by the so-called deterministic correlations(DC),which include both deterministic stress correlations(DCS)and deterministic total enthalpy correlations(DCH).These correlations should be modeled to close the system of equations.In this paper,the distribution of DC in a transonic centrifugal compressor is presented,and its relative importance is revealed.The assumption made by Adamczyk that the pure unsteady fluctuation is significantly smaller than the spatial fluctuation is verified at the impeller-diffuser interface.The decomposition of DCH is also discussed to determine its two different physical mechanisms.Finally,the transport equations in terms of DCS in cylindrical coordinates are derived,and the terms are evaluated to determine the ones that are necessary to model.All these analyses significantly contribute to our model development for DC in centrifugal compressors. | LIU BaoJie ZHANGBo LIU YangWei | 2015 | Science China(Technological Sciences)2015，58，3： | 5 |
| 5 | Control of Corner Separation by Optimized Slot Configuration in a Linear Compressor Cascade显示文摘为控制压气机叶片吸力面与端壁处所形成的三维角区分离,本文在叶根处引入了从压力面到吸力面的槽道来控制角区分离流动。基于利用优化算法对叶根处槽道几何的优化结果,本文通过数值模拟和实验来分析槽道在不同进口攻角下对角区分离的控制效果。本文通过对比原始和开槽叶栅中总压损失、静压升和三维角区分离特征表明叶根处引入的槽道对角区分离有明显的控制效果。 | Jinjing Sun Yangwei Liu Lipeng Lu Xavier OTTAVY | 2016 | 风机技术2016，58，6： | 4 |
| 6 | Kinematic Optimization of Bionic Shoulder Driven by Pneumatic Muscle Actuators Based on Particle Swarm Optimization显示文摘A bionic shoulder joint with three degree-of-freedom(DOF)driven by pneumatic muscle actuator is proposed and its corresponding kinematic model is established.The bionic shoulder is optimized by particle swam optimization(PSO)with the fitness standards that the requirements of rotation indexes are met and the fluctuation of motion is kept in the lowest resolution in a pneumatic muscle actuator range.Simulation considering rotation indexes only(first simulation)is compared with the one considering both rotation indexes and motion resolution(second simulation)subsequently.Mounting position of the pneumatic muscle actuators in bionic shoulder is optimized after initializing the same condition in simulations.Results show that the fluctuations of parameters are consistent,and the parameters of the first simulation have good convergence than those of the second one.With the increase of stretch rate of the pneumatic muscle actuator,the needed length of fixed link in the center of static platform decreases in optimization. | Liu Kai Ge Zhishang Xu Jiaqi Gu Baotong Wang Yangwei Zhao Dongbiao | 2016 | Transactions of Nanjing University of Aeronautics and Astronautics2016，33，3： | 3 |
| 7 | Phenotypic and genetic parameter estimation of juvenile growth and bottom color traits in half-smooth tongue sole,Cynoglossus semilaevis显示文摘Half-smooth tongue sole(Cynoglossus semilaevis) is a commercially important fish species. There were no reports about accurate genetic parameters of growth traits in C. semilaevis, despite efforts aimed at the culture of this species. Therefore, the main goal of this study was to estimate the parameters for the early growth traits(total length, body depth and body weight) of C. semilaevis based on the data obtained from 80 families. The trait of fish with pure white bottom or not(named as the trait of bottom color) was also analyzed. All the heritabilities estimated for the traits were medium, which varied from 0.210 to 0.362. Genetic correlations among growth traits were highly positive, varying from 0.913 to 0.959, indicating that selection of one of the three traits would result in correlated increase in the others. Also, genetic correlations between bottom color and growth traits were positive and varying from 0.241 to 0.353, suggesting that selection for the bottom color can be utilized to enhance the selection of growth traits. In addition, fish from the top performing 16 full-sib families were selected as broodstock, based on the above analysis and the comparison of family breeding value. This research provides an important basic material to implement selective breeding in C. semilaevis. | LIU Feng | 2016 | Acta Oceanologica Sinica2016，35，10： | 2 |
| 8 | Postharvest Biological Control of Apple Anthracnose by Bacillus subtilis BS80-6,A Mutant Strain through Ion Implantation显示文摘The original Bacillus subtilis was isolated from the soil of an apple orchard,and B. subtilis strain BS80-6,selected from Bacillus subtilis by ion implantation,was used as an antagonist for postharvest biological control against apple anthracnose( colletotrichum gloeosporioides). The mechanisms of action and efficacy of Bacillus subtilis strain BS80-6 against apple anthracnose caused by colletotrichum gloeosporioides were studied in vitro and on apples in controlled and semi-commercial conditions. An application of cell suspension( 108 cells per mL) of the antagonist in artificial wounds of apples reduced growth of C. gloeosporioides after storage at different temperatures. The inhibitory actions of cell culture to hyphal growth and to spores germination were 86. 6% and 98. 65%,respectively,and the control efficacy of cell culture against the disease was 60. 34% at room temperature. The results showed that BS80-6 was more effective against apple anthracnose.The cell culture of BS80-6 received better control efficacy against apple anthracnose than culture filtrates and autoclaved cell. All treatments significantly inhibited the disease both in vitro and in vivo compared with control. Fruits treated with cell culture and stored at 10 ℃ had lower infection rate,more delayed formation of acervwlus and smaller lesion diameter than those stored at 20 ℃. There was better control efficacy in fruits inoculated with spores after application of BS80-6. The mechanisms of BS80-6 activity appeared to involve production of an antifungal substance,deformation of hyphal cell and disintegration of cell wall. Besides,BS80-6 could improve the activity of major defense enzymes of apple,such as peroxidase( POD) and polyphenol oxidase( PPO). | Tan Genjia Fei Dan Shi Yangwei Liu Shufang Li Li Li Zengzhi | 2014 | Plant Diseases and Pests2014，5，3： | 2 |
| 9 | Rotation Control of a 3-DOF Parallel Mechanism Driven by Pneumatic Muscle Actuators显示文摘The pneumatic muscle actuator(PMA)has many advantages,such as good flexibility,high power/weight ratio,but its nonlinearity makes it difficult to build a static mathematical model with high precision.A new method is proposed to establish the model of PMA.The concept of hybrid elastic modulus which is related to the static characteristic of PMA is put forward,and the energy conservation law is used to achieve the expression of the hybrid elastic modulus,which can be fitted out based on experimental data,and the model of PMA can be derived from this expression.At the same time,a 3-DOF parallel mechanism(a new bionic shoulder joint)driven by five PMAs is designed.This bionic shoulder joint adopts the structure of two antagonistic PMAs actualizing a rotation control and three PMAs controlling another two rotations to get better rotation characteristics.The kinematic and dynamic characteristics of the mechanism are analyzed and a new static model of PMA is used to control it.Experimental results demonstrate the effectiveness of this new static model. | LIU Kai CHEN Yining WU Yang XU Jiaqi WANG Yangwei GE Zhishang | 2019 | Transactions of Nanjing University of Aeronautics and Astronautics2019，36，2： | 2 |
| 10 | MFCC-based perceptual hashing for compressed domain of speech content i- dentification 显示文摘 | Zhang Qiuyu Liu Yangwei Di Yanjun | 2014 | Journal of Chemical and Pharmaceutical Research2014，6，7： | 1 |
| 11 | 显示文摘 | HUANG Yufen CHIANG Chengkang LIN Yangwei LIU Kungtien HU Chochen BAIR Mingjong CHANG Huantsung | 2008 | Electrophoresis2008，29，9： | 1 |
| 12 | Modification of spalart-allmaras model with consideration of turbulence energy backscatter using velocity helicity显示文摘 | Liu Yangwei Lu Lipeng Fang Le | | 0，，24： | 1 |
| 13 | Modification of Spalart–Allmaras model with consideration of turbulence energy backscatter using velocity helicity显示文摘 | Yangwei Liu Lipeng Lu Le Fang Feng Gao | 2011 | Physics Letters A2011，，24： | 1 |
| 14 | Electromagnetic Properties of a New Microwave Plasma Torch with Double Resonance Configuration显示文摘 | YU Bingwen JIN Wei ZHU Dan YING Yangwei YU Haixiang SHAN Jin XU Chen LIU Wenlong JIN Qinhan | 2016 | Chemical Research in Chinese Universities2016，32，4： | 1 |
| 15 | Modification of spalart-allmaras model with consideration of turbulence energy backscatter using velocity helicity显示文摘 | Liu Yangwei Lu Lipeng Fang Le | 2011 | Physics Letters A2011，375，24： | 1 |
| 16 | Study of limits to the rotation function in the SA-RC turbulence model显示文摘The Rotation and Curvature(RC)correction is an important turbulence model modifi-cation approach,and the Spalart-Allmaras model with the RC correction(SA-RC)has been exten-sively studied and used.As a multiplier of the modelling equation’s production term,the rotation function f_(r1)should have a cautiously designed value range,but its limit varies in different models and flow solvers.Therefore,the need of restriction is discussed theoretically,and the common range of f_(r1)is explored in Burgers vortexes.Afterwards,the SA-RC model with different limits is tested numerically.Negative f_(r1)always appears in the SA-RC model,and the difference between simula-tion results brought by the limits is not negligible.A lower limit of 0 enhances turbulence produc-tion,and therefore the vortex structures are dissipated faster and shrink in size,while an upper limit plays an opposite role.Considering that the lower limit of 0 usually promotes the simulation accu-racy and fixes the numerical defect,whereas the upper limit worsens the predictive performance in most cases,it is recommended to limit f_(r1)non-negative while utilizing the SA-RC model.In addi-tion,the RC-corrected model has a better prediction of the attached flow near curved walls,while the SA-Helicity model largely improves the simulation accuracy of three-dimensional large-scale vortices.The model combining both corrections has the potential to become more adaptive and more accurate. | Wenhao LI Yangwei LIU | 2023 | Chinese Journal of Aeronautics2023，36，1： | 1 |
| 17 | Thermodynamics-guided two-way interlocking DNA cascade system for universal multiplexed mutation detection显示文摘Detection of point mutations in driver genes is of great significance for the early diagnosis,treatment,and prognostic evaluation of cancer.However,current detection methods do not offer versatility,specificity,and rapid performance simultaneously.Thus,multiple mutation detection processes are necessary,which results in long processing times and high costs.In this study,we developed a thermodynamics-guided two-way interlocking DNA cascade system for universal multiplexed mutation detection(TTI-CS).This strategy is based on the DNA probe,which changes the thermodynamic balance of the DNA cascade by the designed bubble structure,thereby achieving a good distinction between mutant and wild-type DNA.The designed method greatly shortens the detection time through two-way intrusion.In addition,this method only changes two inexpensive trigger and bridge sequences,which replace the specific and expensive nucleic acid probes used in analyses based on traditional DNA probe methods,thereby enabling multiple detections.We performed the detection of synthetic single-stranded DNA for the five mutation points and successfully detected in endometrial cancer specimens.The detection limit of this method is0.1%,which better meets the needs of clinical low-abundance multiple mutation detection.Overall,TTI-CS is currently one of the best methods for detecting multiple mutation detections. | Wei Zhang Liquan Liu Yangwei Liao Wan Shu Xiaofeng Tang Kejun Dong Zhihao Ming Xianjin Xiao Hongbo Wang | 2022 | Chinese Chemical Letters2022，33，1： | 0 |
| 18 | Parameter study on numerical simulation of corner separation in LMFA-NACA65 linear compressor cascade显示文摘Large-eddy simulation(LES) is compared with experiment and Reynolds-averaged Navier-Stokes(RANS), and LES is shown to be superior to RANS in reproducing corner separation in the LMFA-NACA65 linear compressor cascade, in terms of surface limiting streamlines,blade pressure coefficient, total pressure losses and blade suction side boundary layer profiles. However, LES is too expensive to conduct an influencing parameter study of the corner separation.RANS approach, despite over-predicting the corner separation, gives reasonable descriptions of the corner separated flow, and is thus selected to conduct a parametric study in this paper. Two kinds of influencing parameters on corner separation, numerical and physical parameters, are analyzed and discussed: second order spatial scheme is necessary for a RANS simulation; incidence angle and inflow boundary layer thickness are found to show the most significant influences on the corner separation among the parameters studied; unsteady RANS with the imposed inflow unsteadiness(inflow angle varying sinusoidally with fluctuating amplitude of 0.92°) does not show any non-linear effect on the corner separation. | Gao Feng Ma Wei Sun Jinjing Jérome Boudet Xavier Ottavy Liu Yangwei Lu Lipeng Shao Liang | 2017 | Chinese Journal of Aeronautics2017，30，1： | 0 |
| 19 | VR helicity density and its application in turbomachinery tip leakage flows显示文摘Helicity is an important quantity that represents the topological interpretation of vortices;however,helicity is not a Galilean invariant.In this study,VR helicity density(HVR)is derived via taking the dot product of vorticity with the unit real eigen vector of the velocity gradient tensor when the complex eigenvalues exist.The analytical solution of HVR is derived to resolve it in a local pointwise manner,and the Galilean invariance of HVR is proved.Tip leakage flow structures in a direct numerical simulation of a tip leakage flow model and a delayed detached eddy simulation of a low-speed large-scale axial compressor rotor are extracted using helicity,eigen helicity density and HVR methods.Results show that the utilization of HVR permits the identification and accentuation of concentrated vortices.Vortices identified by HVR appear in more connective states.As in the case of helicity,the sign of HVR distinguishes between primary and secondary vortices,while eigen helicity density fails.The normalized HVR is superior to the normalized helicity density in locating the vortex axis,especially for the induced vortex structures.Hence,HVR is a strong candidate to replace the helicity density,especially when Galilean invariance is required. | Yumeng TANG Yangwei LIU | 2022 | Chinese Journal of Aeronautics2022，35，11： | 0 |
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