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One-pot Hydrothermal Synthesis of rGO-Fe3O4 Hybrid Nanocomposite for Removal of Pb（II） via Magnetic Separation

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Chemical Research in Chinese Universities 2015年第4期31卷 508-513页

作者： CAO wei MA Yiran ZHOU wei guo Lin School of Chemistry and Environment Beihang University Beijing 100191 P. R. China

The reduced graphene oxide-Fe3O4（rGO-Fe3O4） hybrid nanocomposite was prepared via a one-pot facile hydrothermal method for adsorption of heavy metal ions. The results of compositional and morphological characteri- zations show that the Fe3O4 NPs with an average diameter of 20 nm have been uniformly dispersed in rGO sheets. Due to the higher specific surface area of rGO and the magnetic properties of Fe3O4 nanoparticles, the prepared rGO-Fe3O4 hybrid nanosheets showed good adsorption capacity for the removal of Pb（II） from wastewater by simple magnetic separation. The result of control tests show that the adsorption capacity of rGO-Fe3O4 can be influenced by the ratio of ferric chloride（FeC13） to graphene oxide（GO） during the process of sample preparation and the initial concentration of Pb（II）. A better adsorption capacity was 30.68 mg/g at n（FeCl3）/m（GO） ratio of 1：5（mmol：mg） at pH=7.0 with the initial concentration of Pb（II） ions of 80 mg/L, and the experimental data were well fitted with the Langmuir adsorption model. The composite with absorbed Pb（II） can be easily collected by magnetic separation from wastewater because of the excellent magnetism of Fe3O4 NPs. The rGO-Fe3O4 hybrid nanocomposite provides an ef- fective and environment-friendly absorbent with great application potential in water purification.

关键词： Graphene Nanocomposite Adsorption Magnetic separation

Prediction of Long-Term Extreme Response of Fish Cage Using Environmental Contour Method

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China Ocean Engineering 2021年第3期35卷 332-343页

作者： BAI Xiao-dong guo wei-wei YANG Can LUO Han-bing State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China Department of Naval Architecture and Ocean Engineering Tianjin UniversityTianjin 300072China China Water Resources Bei Fang Investigation Design and Research CO.LTDTianjin 300222China College of Shipbuilding Engineering Harbin Engineering UniversityHarbin 150001China

The fish cage design requires accurate predictions of long-term extreme loads and *** with the time-consuming full long-term analysis method integrating all the probability distribution of the short-term extremes,the environmental contour method gains much attention in predicting the long-term extreme values due to the less computational *** paper investigates the long-term extreme response of a fish cage using the environmental contour *** fish cage is numerically simulated based on the lumped-mass method and the curved beam *** on the one-dimensional(1D)and two-dimensional(2D)environmental contour,the extreme responses,including the surge and heave motions,mooring force,and vertical bending of the floater,are predicted for different return periods and compared with the full long-term analysis *** indicate that the 1D method greatly underestimates the extreme *** 2D environmental contour method with a higher percentile level,namely90%,provides reasonable estimations and seems to be suitable for the long-term value *** studies show that the mooring arrangement and the bending stiffness have great effects on the bending moment and the mooring force and the mooring line pre-tension has minor effects on the fish cage response.

关键词： fish cage long-term extreme value environmental contour method sensitivity analysis

Applications of post-translational modifications of FoxO family proteins in biological functions

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Journal of Molecular Cell Biology 2011年第5期3卷 276-282页

作者： Ying Zhao Yachen Wang wei-guo Zhu Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education) Department of Biochemistry and Molecular BiologyPeking University Health Science CenterBeijing 100191China School of Oncology Peking University Health Science CenterBeijing 100191China

The functions of the FoxO family proteins,in particular their transcriptional activities,are modulated by post-translational modifi-cations(PTMs),including phosphorylation,acetylation,ubiquitination,methylation and *** PTMs occur in response to different cellular stresses,which in turn regulate the subcellular localization of FoxO family proteins,as well as their half-life,DNA binding,transcriptional activity and ability to interact with other cellular *** this review,we summarize the role of PTMs of FoxO family proteins in linking their biological and functional relevance with various diseases.

关键词： FoxO post-translational modification cancer

A constrained particle dynamics for continuum-particle hybrid method in micro- and nano-fluidics

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Acta Mechanica Sinica 2006年第6期22卷 503-508页

作者： Jia Cui guo wei He Dewei Qi LNM Institute of Mechanics Chinese Academy of SciencesBeijing 100080 China Department of Paper and Chemical Engineering Western Michigan University Kalamazoo MI 49008 USA

A hybrid method of continuum and particle dynamics is developed for micro- and nano-fluidics, where fluids are described by a molecular dynamics （MD） in one domain and by the Navier-Stokes （NS） equations in another domain. In order to ensure the continuity of momentum flux, the continuum and molecular dynamics in the overlap domain are coupled through a constrained particle dynamics. The constrained particle dynamics is constructed with a virtual damping force and a virtual added mass force. The sudden-start Couette flows with either non-slip or slip boundary condition are used to test the hybrid method. It is shown that the results obtained are quantitatively in agreement with the analytical solutions under the non-slip boundary conditions and the full MD simulations under the slip bound- ary conditions.

关键词： Hybrid method Molecular dynamicsimulation Navier-Stokes equation Microfluidics

三维侧凸角定量评估手法治疗腰椎间盘突出症的近期效果

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中国组织工程研究 2025年第21期29卷 4552-4559页

作者：顾江鹏陈许晶刘一康郭伟刘晓民王飞冯伟空军特色医学中心中西医结合正骨科北京市100142 安徽医科大学第五临床学院安徽省合肥市230032 河北北方学院河北省张家口市075000 北京工业大学电子信息与控制工程学院北京市100024

背景:腰椎间盘突出症患者因髓核压迫、力学失衡而出现不同的身体畸形,冯天有教授在此基础上提出“四步腰型”,冯伟教授提出三维侧凸角客观量化“四步腰型”。目的:探讨三维侧凸角在评估新医正骨疗法治疗腰椎间盘突出症患者疗效中的应用... 详细信息

背景:腰椎间盘突出症患者因髓核压迫、力学失衡而出现不同的身体畸形,冯天有教授在此基础上提出“四步腰型”,冯伟教授提出三维侧凸角客观量化“四步腰型”。目的:探讨三维侧凸角在评估新医正骨疗法治疗腰椎间盘突出症患者疗效中的应用价值。方法:纳入149例腰椎间盘突出症患者,其中四步腰型Ⅰ/Ⅱ型96例,Ⅲ/Ⅳ型55例,均进行2周的手法治疗;另纳入10名健康志愿者作为健康对照。利用表面形貌技术测量三维侧凸角,比较四步腰型Ⅰ/Ⅱ型及Ⅲ/Ⅳ型患者三维侧凸角治疗前后的差异,比较患者治疗后与健康受试者的差异,比较Ⅰ/Ⅱ型和Ⅲ/Ⅳ型三维侧凸角治疗变化量的差异,探索三维侧凸角各投影面内在相关性及与常用临床疗效评分的相关性。结果与结论:(1)四步腰型Ⅰ/Ⅱ型与Ⅲ/Ⅳ型患者治疗前后的三维侧凸角差异有显著性意义(P 0.05);(3)三维侧凸角在各个投影面之间两两呈现相关性,与主观量表之间存在相关性;(4)提示三维侧凸角在手法治疗前后脊柱畸形程度定量评估中具有很好的作用,通过定量化的指标能够揭示患者治疗前后病情变化规律;三维侧凸角能反映影响患者生活状态的严重程度,但单一平面参数评估脊柱侧弯有一定局限性。

关键词：腰椎间盘突出症脊柱侧弯腰型表面形貌新医正骨手法治疗疗效

Estimation and Prediction of Gas Chromatography Retention Indices of Hydrocarbons in Straight-run Gasoline by Using Artificial Neural Network and Structural Coding Method

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Chemical Research in Chinese Universities 2001年第1期17卷 31-40页

作者： YIN Chun sheng guo wei min LIU wei ZHAO wei PAN Zhong xiao Department of Applied Chemistry University of Science and Technology of ChinaHefei 230026P.R.China

The molecular structures of hydrocarbons in straight run gasoline were numerically coded. The nonlinear quantitative relationship(QSRR) between gas chromatography(GC) retention indices of the hydrocarbons and their molecular structures were established by using an error back propagation(BP) algorithm. The GC retention indices of 150 hydrocarbons were then predicted by removing 15 compounds(as a test set) and using the 135 remained molecules as a calibration set. Through this procedure, all the compounds in the whole data set were then predicted in groups of 15 compounds. The results obtained by BP with the correlation coefficient and the standard deviation 0 993 4 and 16 54, are satisfied.

关键词： Structural encoding GC retention index Neural network Error back propagation(BP)

An effective strategy of constructing multi-metallic oxides of ZnO/ CoNiO_(2)/CoO/C microflowers for improved supercapacitive performance

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Chinese Journal of Chemical Engineering 2024年第3期67卷 1-8页

作者： wei guo Yan Zhang Xiaxin Lei Shuang Wang College of Physics Taiyuan University of TechnologyJinzhong 030600China College of Environmental Science and Engineering Taiyuan University of TechnologyJinzhong 030600China Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Taiyuan University of TechnologyTaiyuan 030024China

In this work,a new ZnO/CoNiO_(2)/CoO/C metal oxides composite is prepared by cost-effective hydrothermal method coupled with annealing process under N_(2) ***,the oxidation-defect annealing environment is conducive to both morphology and component of the composite,which flower-like ZnO/CoNiO_(2)/CoO/C is *** from good chemical stability of ZnO,high energy capacity of CoNiO_(2) and CoO and good conductivity of C,the as-prepared sample shows promising electrochemical behavior,including the specific capacity of 1435 C·g^(-1) at 1 A·g^(-1),capacity retention of 87.3%at 20 A·g^(-1),and cycling stability of 90.5%for 3000 cycles at 5 A·g^(-1),***,the prepared ZnO/CoNiO_(2)/CoO/C/NF//AC aqueous hybrid supercapacitors device delivers the best specific energy of 55.9 W·h·kg^(-1) at 850 W·kg^(-1).The results reflect that the as-prepared ZnO/CoNiO_(2)/CoO/C microflowers are considered as high performance electrode materials for supercapacitor,and the strategy mentioned in this paper is benefit to prepare mixed metal oxides composite for energy conversion and storage.

关键词： Composites Electrochemistry Hydrothermal Transition metal oxides Structural control Supercapacitors

Benzoselenol as an organic electrolyte additive in Li-S battery

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Nano Research 2023年第3期16卷 3814-3822页

作者： Junpeng Sun Kai Zhang Yongzhu Fu wei guo College of Chemistry Zhengzhou UniversityZhengzhou 450001China

Lithium-sulfur(Li-S)battery is one of the promising high-energy battery systems for future ***,the shuttle effect due to the dissolved lithium polysulfides in ether electrolyte hampers its practical *** electrolyte additives in Li-S battery has been widely acknowledged as an effective way to reduce the shuttle effect and improve cycling *** this work,benzoselenol(PhSeH)is used as an organic electrolyte additive in Li-S *** reacts with elemental sulfur to form phenyl selenosulfide,altering the redox pathway of the cathode with the regeneration of S8 at the end of charge and enabling new redox reactions with high *** Li-S coin cell with an optimized amount of PhSeH in the electrolyte delivers a high discharge capacity of 1,436 mAh·g^(−1)and a capacity retention of 92.86%in 200 cycles,and exhibits lower discharge overpotential in comparison to the cell with blank *** Li-S pouch cell with a low electrolyte/sulfur(E/S)ratio of 4.0μL·mg^(−1)shows a discharge capacity of 1,398 mAh and excellent capacity retention for 20 cycles.

关键词： lithium-sulfur(Li-S)battery benzoselenol electrolyte additive sulfur-selenium bond electrochemical performance

Differential Evolution-Boosted Sine Cosine Golden Eagle Optimizer with Lévy Flight

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Journal of Bionic Engineering 2022年第6期19卷 1850-1885页

作者： Gang Hu Liuxin Chen Xupeng Wang guo wei Department of Applied Mathematics Xi’an University of TechnologyXi’an710054People’s Republic of China School of Computer Science and Engineering Xi’an University of TechnologyXi’an710048People’s Republic of China School of Art and Design Xi’an University of TechnologyXi’an710054China Department of Mathematics and Computer Science University of North Carolina at PembrokePembrokeNC28372USA

Golden eagle optimizer(GEO)is a recently introduced nature-inspired metaheuristic algorithm,which simulates the spiral hunting behavior of golden eagles in ***,the GEO suffers from the challenges of low diversity,slow iteration speed,and stagnation in local optimization when dealing with complicated optimization *** ameliorate these deficiencies,an improved hybrid GEO called IGEO,combined with Lévy flight,sine cosine algorithm and differential evolution(DE)strategy,is developed in this *** Lévy flight strategy is introduced into the initial stage to increase the diversity of the golden eagle population and make the initial population more abundant;meanwhile,the sine-cosine function can enhance the exploration ability of GEO and decrease the possibility of GEO falling into the local ***,the DE strategy is used in the exploration and exploitation stage to improve accuracy and convergence speed of ***,the superiority of the presented IGEO are comprehensively verified by comparing GEO and several state-of-the-art algorithms using(1)the CEC 2017 and CEC 2019 benchmark functions and(2)5 real-world engineering problems *** comparison results demonstrate that the proposed IGEO is a powerful and attractive alternative for solving engineering optimization problems.

关键词： Golden eagle optimizer Lévy flight Sine cosine algorithm Differential evolution strategy Engineering design Bionic model