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| 1 | A seamless operation mode transition control strategy for a microgrid based on master-slave control显示文摘This paper proposes a control strategy that can realize seamless microgrid operation mode transition between grid-connected operation and stand-alone operation.The scenario of a microgrid based on master-slave control is considered,where the master distributed generation(DG) unit operates in different control schemes in different microgrid operation modes,while other slave DG units operate with power/current control all the time.The proposed control strategy focuses on the master DG unit,and contains the control state/reference compensation algorithm and separation switch control logic.The proposed method can effectively reduce the impact on the critical loads and DG units caused by microgrid operation mode transitions. | WANG ChengShan LI XiaLin GUO Li LI YunWei | 2012 | Science China(Technological Sciences)2012，55，6： | 45 |
| 2 | Silicon Carbide Supported Palladium-Iridium Bimetallic Catalysts for Efficient Selective Hydrogenation of Cinnamaldehyde显示文摘Summary of main observation and conclusion Selective hydrogenation of a,B-unsaturated carbonyls into saturated carbonyls is important to obtain remunerative products.However,it is still a challenge to achieve high activity and selec tivity under mild conditions.Herein,Pd,Ir and bimetallic Pd-Ir nanoparticles were uniformly deposited with high dispersity on the surface of SIC by a facile impregnation method,respectively.The as prepared Pd/SIC catalysts eficiently hydrogenate cinnamaldehyde to hydrocinnamaldehyde at room temperature and atmospheric pressure,and the activity of Pd/SiC is observed further enhanced by adding Ir component(conversion of 100%).In addition,the dependence of Pd-lr catalyst activity on Pd/Ir molar ratio con.firms a synergistic effect between Ir and Pd,which originates from the electron transfer between Pd and Ir. | Penghui Li Yingyong Wang Yunwei Wang Guoqiang Jin Xiang-Yun Guo Xili Tong | 2020 | Chinese Journal of Chemistry2020，38，4： | 1 |
| 3 | Effect of space flight factors on alfalfa seeds显示文摘 | Ren Weibo Zhang Yunwei Deng Bo Guo Huiqin Chen Li- bo Liu Yaxue | 2010 | African Journal of Biotechnology2010，9，43： | 1 |
| 4 | Hepatitis B virus X protein induces ALDH2 ubiquitin-dependent degradation to enhance alcoholic steatohepatitis显示文摘Background:Excessive alcohol intake with hepatitis B virus(HBV)infection accelerates chronic liver disease progression and patients with HBV infection are more susceptible to alcohol-induced liver disease.Hepatitis B virus X protein(HBx)plays a crucial role in disease pathogenesis,while its specific role in alcoholic liver disease(ALD)progression has not yet been elucidated.Here,we studied the role of HBx on the development of ALD.Methods:HBx-transgenic(HBx-Tg)mice and their wild-type littermates were exposed to chronic plus binge alcohol feeding.Primary hepatocytes,cell lines,and human samples were used to investigate the interaction between HBx and acetaldehyde dehydrogenase 2(ALDH2).Lipid profiles in mouse livers and cells were assessed by using liquid chromatography–mass spectrometry.Results:We identified that HBx significantly aggravated alcohol-induced steatohepatitis,oxidative stress,and lipid peroxidation in mice.In addition,HBx induced worse lipid profiles with high lysophospholipids generation in alcoholic steatohepatitis,as shown by using lipidomic analysis.Importantly,serum and liver acetaldehyde were markedly higher in alcoholfed HBx-Tg mice.Acetaldehyde induced lysophospholipids generation through oxidative stress in hepatocytes.Mechanistically,HBx directly bound to mitochondrial ALDH2 to induce its ubiquitin–proteasome degradation,resulting in acetaldehyde accumulation.More importantly,we also identified that patients with HBV infection reduced ALDH2 protein levels in the liver.Conclusions:Our study demonstrated that HBx-induced ubiquitin-dependent degradation of mitochondrial ALDH2 aggravates alcoholic steatohepatitis. | Haoxiong Zhou Sizhe Wan Yujun Luo Huiling Liu Jie Jiang Yunwei Guo Jia Xiao Bin Wu | 2023 | Gastroenterology Report2023，11，1： | 0 |
| 5 | Optimization of fracturing parameters for tight oil production based on genetic algorithm显示文摘It is difficult to determine the main controlling factors of tight oil production.In addition to the problem of uncontrollable prediction accuracy,the numerical prediction model established by the main controlling factors will also make the correctly predicted low production samples lose the value of development.Applying the optimization algorithm with fast convergence speed and global optimization to optimize the controllable parameters in the high-precision numerical prediction model can effectively improve the productivity of low production wells with timeliness,and bring greater economic value while saving development cost.Using PCA-GRA method,the sample weight and the weighted correlation ranking results of parameters affecting tight oil production were obtained.Thereupon then the main controlling factors of tight oil production were determined.Then we set up a BP neural network model with by taking the main controlling factors as input and tight oil production as output.The prediction effect of the network was good and can be put into use.The results of sensitivity analysis showed that the network was stable,and the total fracturing fluid volume had the greatest impact on the production of tight oil.Finally,by using genetic algorithm,we optimized the fracturing parameters of all low production well samples in the field data.Combined with the fracturing parameters of all high production well samples and the optimized fracturing parameters of low production wells,the optimal interval of fracturing parameters was given,which can provide guidance for the field fracturing operation. | Dali Guo Yunwei Kang Zhiyong Wang Yunxiang Zhao Shuguang Li | 2022 | Petroleum2022，8，2： | 0 |
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