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| 1 | Analysis of pressure characteristics under laminar and turbulent flow states inside the pilot stage of a deflection flapper servo-valve:Mathematical modeling with CFD study and experimental validation显示文摘Electro-hydraulic servo-valves are widely used components in the mechanical industry,aerospace and aerodynamic devices which precisely control the airplane or missile wings.Due to the small size and complex structure in the pilot stage of deflection flapper servo-valves,accurate mathematical models for the flow and pressure characteristics have always been very difficult to be built.In this paper,mathematical models for the pilot stage of deflection flapper servo-valve are investigated to overcome some gaps between the theoretical formulation and overall performance of the valve by considering different flow states.Here,a mathematical model of the velocity distribution at the flapper groove exit is established by using Schlichting velocity equations for incompressible laminar fluid flow.Moreover,when the flow becomes turbulent,a mathematical model of pressure characteristics in the receiving ports is built on the basis of the assumption of the collision between the liquid and the jet as the impact of the jet on a moving block of fluid particles.To verify the analytical models for both laminar and turbulent flows,the pressure characteristics of the deflection flapper pilot stage are calculated and tested by using numerical simulation and experiment.Experimental verification of the theory is also presented.The computed numerical and analytical results show a good agreement with experimental data. | Bijan Krishna SAHA Songjing LI Xinbei LV | 2020 | Chinese Journal of Aeronautics2020，33，3： | 6 |
| 2 | SnO_2-CuO/graphene nanocomposites for high performance Li-ion battery anodes显示文摘The nanocomposites of SnO2-CuO/graphene are synthesized via a two-step method.CuO nanorods are firstly uniformly loaded on the graphene nanosheets,and then SnO2 nanoparticles are coated on CuO nanorods.SnO2-CuO/graphene nanocomposites exhibit high cyclability and capacity as anode of Li-ion battery.After 30 cycles,the capacity can maintain at 584 mAh g-1 at0.1C rate(10 h per half cycle).The high performance can be ascribed to the synergistic effect among SnO2 nanoparticles,CuO nanorods and graphene nanosheets.The results manifest that the nanocomposites of SnO2-CuO/graphene are very suitable for Li-ion battery anodes. | ZHAO Jun SHAN WanFei XIA XinBei WANG Qi XING LiLi | 2014 | Science China(Technological Sciences)2014，57，6： | 4 |
| 3 | Functional characterization of oligopeptide transporter 1 of dairy cows显示文摘Background: It is wel known that peptides play a vital role in the nutrition and health of dairy cows. Bovine oligopeptide transporter 1(bP epT 1) is involved in the peptide transport process in the gastrointestinal tracts of dairy cows. However,little information is known in the characteristics of bP epT 1. Therefore, the purpose of this study was to characterize bP epT 1 functional y using a mammalian cel expression system. The uptake of radiolabeled dipeptide glycyl-sarcosine([3 H]-Gly-Sar)into the bP epT 1-transfected Chinese hamster ovary cel s was measured at various pH and substrate concentrations and with or without 15 other smal peptides that contained Met or Lys.Results: Western blot results showed that the abundance of bP epT 1 protein in the jejunum and ileum are the highest in the gastrointestinal tract of dairy cows. The uptake of [3 H]-Gly-Sar by b Pep T1-Chinese hamster ovary cells was dependent on time, p H, and substrate concentration, with a low Kmvalue of 0.94 ± 0.06 mmol/L and a maximum velocity of 20.80 ± 1.74 nmol/(mg protein · 5 min). Most of the di-and tripeptides were the substrates of b Pep T1,based on substrate-competitive studies. However, bP epT 1 has a higher affinity to the peptides with shorter chains, greater hydrophobicity, and negative or neutral charges.Conclusions: These results demonstrated for the first time the functional characteristics of bP epT 1, and they provide a new insight and better understanding into its vital role in absorbing a wide range of peptides from the digestive tract of dairy cows. | Qingbiao Xu Zhixuan Liu Hongyun Liu Fengqi Zhao Xinbei Huang Yueming Wu Jianxin Liu | 2018 | Journal of Animal Science and Biotechnology2018，9，2： | 2 |
| 4 | Disease characteristics and neuropathological changes associated with cognitive dysfunction in obstructive sleep apnea显示文摘Obstructive sleep apnea(OSA)is a common sleep-disordered breathing disease that often leads to many comorbidities(e.g.,cognitive dysfunction),which adversely affect the quality of life for patients with OSA.Thus far,the underlying mechanisms of this dysfunction remain unclear.Many studies have focused on OSA-related characteristics,including intermittent hypoxemia and sleep fragmentation.There is increasing emphasis on neuroimaging studies to explore underlying relationships between neuropathological changes and cognitive dysfunction.This article reviews recent research progress concerning cognitive dysfunction associated with OSA to reveal potential mechanisms that contribute to this dysfunction. | Tingting Ji Xiaodan Li Yue Qiu Lin Mei Xinbei Jia Jun Tai Yongli Guo Jie Zhang Shengcai Wang Xin Ni | 2021 | Pediatric Investigation2021，5，1： | 2 |
| 5 | Contributing to local policy making on GHG emission reduction through inventorying and attribution: A case study of Shenyang, China显示文摘 | Fengming Xi Yong Geng Xudong Chen Yunsong Zhang Xinbei Wang Bing Xue Huijuan Dong Zhu Liu Wanxia Ren Tsuyoshi Fujita Qinghua Zhu | 2011 | Energy Policy2011，，10： | 1 |
| 6 | Municipal solid waste management in Dalian: practices and challenges显示文摘在开发乡村的城市的区域的快成长在市政的稳固的废物(MSW ) 上带了严重问题管理。采用一条综合途径处理如此的挑战将是合理的以便 MSW 管理的全面 eco 效率能被改进。为了更好检验综合 MSW 管理的属性怎么正在被解释并且实行,并且探索变化应该被做到的,改进综合 MSW 管理的应用程序,我们采用一个案例研究方法以便接受的教训能被用来在另外的城市里通知行动,潜在的答案可以提供可行策略。案例研究城市是 Dalian,有快在经济种率的一个典型海港城市。这案例研究的结果给我们看公共参予的碎裂的管理结构,相关规定的无效、低效的实施,向后的技术,有限金融资源和缺乏是为综合 MSW 管理的实现的主要障碍。因而,以便克服这些障碍,我们在 MSW 管理上建议一个综合管理框架,试图最大化 MSW 管理的全面 eco 效率。 | Xinbei WANG Yong GENG | 2012 | Frontiers of Environmental Science & Engineering2012，6，4： | 1 |
| 7 | Regional initiatives on promoting cleaner production in China: A case of Lia- oning显示文摘 | YONG GENG WANG XINBEI ZHU QINGHUA | 2010 | Journal of Cleaner Production2010，，18： | 1 |
| 8 | Dynamic Characteristics of the Jet Force on the Flapper of the Pilot Stage in a Flapper Nozzle Servo Valve Under the Flow-Solid Interaction显示文摘Nowadays,more and more attention has been paid to improve the performance of the nozzle flapper servo valve.As a core part of nozzle flapper servo valve,the armature assembly is affected by electromagnetic force,jet force and feedback force at the same time.Due to the complex structure of the pilot stage flow field and the high jet pressure,the prediction of the jet force has always been difficult in modeling the transient motion of the servo valve.Whereupon,a numerical simulation method based on the flow-solid interaction(FSI)is applied to observe the variation of the jet force when the flapper is moving.Different parameters are employed to seek a suitable numerical simulation model which can balance the accuracy and computational cost.By comparing with the experiment results,the effectiveness of numerical simulation method in predicting the variation of the jet force and cavitation is verified.By this numerical simulation model,the distribution of flow field and the force on the flapper predicted by the moving and fixed flapper are compared.The results show that more dynamic details are achieved by the transient simulation.By analyzing the numerical simulation results of different inlet pressures and flapper vibration frequencies,the relationship between the movement of the flapper,the flow field distribution,the jet force and the inlet pressure is established,which provides a theoretical basis for the subsequent modeling of the armature assembly. | Xinbei Lü Jinghui Peng Songjing Li | 2020 | Journal of Beijing Institute of Technology2020，29，4： | 0 |
| 9 | Upregulation of cadherin-11 contributes to cholestatic liver fibrosis显示文摘Importance:Cadherin-11(CDH11),a cell-to-cell adhesion molecule,is implicated in the fibrotic process of several organs.Biliary atresia(BA)is a common cholestatic liver disease featuring cholestasis and progressive liver fibrosis in children.Cholestatic liver fibrosis may progress to liver cirrhosis and lacks effective therapeutic strategies.Currently,the role of CDH11 in cholestatic liver fibrosis remains unclear.Objective:This study aimed to explore the functions of CDH11 in cholestatic liver fibrosis.Methods:The expression ofCDH11 in BA livers was evaluated by database analysis and immunostaining.Seven BA liver samples were used for immunostaining.The wild type(Wt)andCDH11 knockout(CDH11^(-/-))mice were subjected to bile duct ligation(BDL)to induce cholestatic liver fibrosis.The serum biochemical analysis,liver histology,and western blotting were used to assess the extent of liver injury and fibrosis as well as activation of transforming growth factor-β(TGF-β)/Smad pathway.The effect of CDH11 on the activation of hepatic stellate cell line LX-2 cells was investigated.Results:Analysis of public RNA-seq datasets showed thatCDH11 expression levels were significantly increased in livers of BA,and CDH11 was correlated with liver fibrosis in BA.BDL-induced liver injury and liver fibrosis were attenuated inCDH11^(-/-)mice compared to Wt mice.The protein expression levels of phosphorylated Smad2/3 were decreased in livers ofCDH11^(-/-)BDL mice compared to Wt BDL mice.CDH11 knockdown inhibited the activation of LX-2 cells.Interpretation:CDH11 plays an important role in cholestatic liver fibrosis and may represent a potential therapeutic target for cholestatic liver disease,such as BA. | Bo Wu Xinbei Tian Weipeng Wang Jing Zhu Ying Lu Jun Du Yongtao Xiao | 2022 | Pediatric Investigation2022，6，2： | 0 |
| 10 | Mathematical modeling of an armature assembly in pilot stage of a hydraulic servo valve based on distributed parameters显示文摘The dynamic performance of a nozzle-flapper servo valve can be affected by several factors such as the disturbance of the input signal,the motion of the armature assembly and the oscillation of the jet force.As the part of vibrating at high frequency,the armature assembly plays a vital role during the operation of the servo valve.In order to accurately predict the transient response of the armature assembly during the vibration,a mathematical model of armature assembly is established based on the distributed parameters method(DPM)and Hamilton principle.The new mathematical model is composed of three main parts,the modal eigenfunction,modal mechanical response expressions of the spring tube and the motion equation of the other armature assembly.After programing,the purpose of using the DPM to predict the dynamic response of different positions located on the armature assembly is achieved.For verifying the validity of the mathematical model,the finite element method(FEM)and classic model(CM)of armature assembly are applicated by commercial software under the same condition.The comparison results prove that the DPM can effectively predict the axial and tangential deflection of the armature assembly different positions which the CM can’t duing to its over-simplification.A certain error is generated when predicting the axial deformation at different heights by DPM,which is caused by an approximate method to simulate the torsion of the spring tube.The comparison results of the spring tube deflection at different vibration frequencies shows that the adaptability of DPM is significantly higher than the classic model,which verify the model is more adaptable for predicting the dynamic response of the armature assembly. | Xinbei LV Jinghui PENG Songjing LI | 2021 | Chinese Journal of Aeronautics2021，34，3： | 0 |
| 11 | Promoting Energy Cooperation between China and Countries along the Belt and Road by Improving the Business Environment显示文摘Energy cooperation is an important part of the Belt and Road Initiative.Countries along the Belt and Road are complementary with China in resources.Therefore,energy cooperation cannot only expand diversified channels for energy import in China,but also effectively drive the economic development of countries along the Belt and Road.At present,the energy cooperation between China and countries along the Belt and Road is still thwarted by China and foreign business environment.Based on the analysis of the current situation of energy cooperation,this paper makes a further analysis of problems and puts forward measures to promote energy cooperation from the perspective of improving the business environment. | Huang Liangxiong Qian Xinbei | 2019 | China Oil & Gas2019，26，5： | 0 |
| 12 | Theory,Method and Application of a State Recognition Based on Theory of Evidence显示文摘A new method of state recognition based on the theory of evidence was proposed. By this method, the plausible function which the sample awaiting recognition belongs to each category can be obtained through distance function. For the marginal samples,two or a batch of evidences can be combined and a new plausible function can be obtained by new evidence. Then the categories of samples can be determined according to plausibility function. This method provides a beder reasoning framework. The result proves the rate of recoghition correctness. | Deling Zheng Xinbei Tang Wei Fang (Information Engineering School, University of Science and Technology Beijing, Beijing 100083, China)(Peat Marwick Huazhen CPA Firm, 100020, China) | 1999 | International Journal of Minerals,Metallurgy and Materials1999，13，1： | 0 |
| 13 | Supramolecular liquid barrier for sulfur mustard utilizing host-guest complexation of pillar[5]arene with triethylene oxide substituents显示文摘Sulfur mustard(SM) can be absorbed by skin quickly and cause serious system damage via reacting with nearly all cell constituents. Until now, there is still lack of effective antidotal therapy for SM and skin protection is highly important to defend SM. In this article, supramolecular liquid barrier based on pillar[5]arene with triethylene oxide substituents(EGP5) has been designed to impede the skin permeation of SM and further interaction with the skin tissue. EGP5 could encapsulate SM within its cavity, with a Kavalue of(5.10 ± 0.47) × 10^(2)L/mol. In vitro skin absorption test proved that EGP5 was capable to effectively prevent SM from penetrating through skin. This supramolecular liquid barrier was employed on rat models to systematically evaluate protective effect against SM intoxication. Pretreatment of EGP5could alleviate skin and system damage induced by SM and improve survival rate of poisoned rat models from 10% to 90%. Additionally, EGP5 served as protective materials could be highly reused after recycling several times. Overall, these findings have provided the first insight into the construction of convenient liquid material for SM protection. | Yahan Zhang Junyi Chen Longming Chen Liang Zhao Mengke Ma Xinbei Du Zhao Meng Han Zhang Zhibing Zheng Yongan Wang Chunju Li Qingbin Meng | 2023 | Chinese Chemical Letters2023，34，4： | 0 |
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