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Sustainable value-added C3 chemicals from glycerol transformations:A mini review for heterogeneous catalytic processes

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Chinese Journal of Chemical Engineering 2019年第7期27卷 1536-1542页

作者： yuan wang Yang Xiao Guomin Xiao Davidson School of Chemical Engineering Purdue UniversityWest LafayetteIN 47907-2100USA School of Chemistry and Chemical Engineering Southeast UniversityNanjing 211189China

It is of importance to convert glycerol,the primary by-product from biodiesel manufacturing,to various valuable C3 chemicals,such as acrolein via dehydration,lactic acid,1,3-dihydroxyacetone via oxidation,and 1,3-propanediol,allyl alcohol via *** compared to petroleum-based resources,C3 chemicals from glycerol provide a benign,sustainable and atomically economic *** heterogeneous catalysts have been designed,prepared and tested for these *** recent five years,great progress,including high yields to target products over appropriate catalysts,insight into reaction mechanism and network,has been *** present review systematically covers recent research progress on sustainable C3 chemical production from catalytic glycerol *** hope that it will benefit future research on transformations of glycerol as well as other polyols.

关键词： Catalysis Biodiesel Glycerol Sustainable C3 compounds Glycerol oxidation Glycerol hydrogenolysis Glycerol dehydration

Synthesis of novel CaCO_3/Ag_2CO_3/Ag I/Ag plasmonic photocatalyst with enhanced visible light photocatalytic activity.

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Science China(Technological Sciences) 2015年第11期58卷 1864-1870页

作者： SUN Lei wang yuan CHEN Wei State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences School of Chemistry and Environmental Engineering Changchun University of Science and Technology

In this work, novel CaCO3/Ag2CO3/AgI/Ag plasmonic photocatalysts were successfully synthesized by a two-step in situ ion exchange process and their photocatalytic properties were studied. The morphology, crystal structure and optical properties of the as-prepared CaCO3/Ag2CO3/AgI/Ag nanocomposites were characterized by transmission electron microscopy （TEM）, X- Ray diffraction （XRD）, and UV-vis diffuse reflectance spectroscopy. The photocatalytic activity of the obtained nanocomposites was evaluated by the photodegradation of methyl orange （MO） under visible light irradiation. It was found that the as-prepared CaCO3/Ag2CO3/AgI/Ag plasmonic photocatalyst exhibits high visible light photocatalytic activity. With an optimized composition, MO dye can be decomposed by more than 94% within 15 min under visible light irradiation. Moreover, the photocatalytic stability could be greatly improved upon the addition of Na2CO3 into the photocatalytic system. From the proposed photocatalytic mechanism, the strong surface plasmon resonance effect of Ag nanoparticles and the efficient separation of photogenerated electrons and holes can effectively enhance the photocatalytic performance of the CaCO3/Ag2COj AgI/Ag composites.

关键词： photocatalyst surface plasmon resonance silver nanoparticle silver iodide visible light dye degradation

MONOTONE APPROXIMATION TO A SYSTEM WITHOUT MONOTONE NONLINEARITY

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Journal of Computational Mathematics 2000年第2期18卷 207-224页

作者： yuan-ming wang Ben-yu Guo Department of Mathematics East China Normal UniversityShanghai 200062China School of Mathematical Sciences Shanghai Normal UniversityShanghai 200234China

Presents information on a study which proposed a monotone approximation for a system without monotone nonlinearity. Concept of ordered pair of supersolution and subsolution for the resulting problem; Numerical results.

关键词： monotone approximation systems without monotone nonlinearity

Simplified Calculation Methods for All-Vertical-Piled Wharf in Offshore Deep Water

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China Ocean Engineering 2017年第2期31卷 182-191页

作者： wang yuan-zhan HE Lin-lin State Key Laboratory for Simulation & Safety of Hydraulic Engineering Tianjin Key Laboratory of Harbor & Ocean EngineeringTianjin University College of River and Ocean Engineering Key Laboratory of Regulation Technology for Inland Waterway in Transportation IndustryKey Laboratory of Hydraulic and Waterway Engineering of Ministry of EducationChongqing Jiaotong University

All-vertical-piled wharf is a kind of high-piled wharf, but it is extremely different from the traditional ones in some aspects, such as the structural property, bearing characteristics, failure mechanism, and static or dynamic calculation methods. In this paper, the finite element method （FEM） and theoretical analysis method are combined to analyze the structural property, bearing behavior and failure mode of the all-vertical-piled wharf in offshore deep water, and to establish simplified calculation methods determining the horizontal static ultimate bearing capacity and the dynamic response for the all-vertical-piled wharf. Firstly, the bearing capability and failure mechanism for all-vertical-piled wharf are studied by use of FEM, and the failure criterion is put forward for all-vertical-piled wharf based on the ＇plastic hinge＇. According to the failure criterion and P-Y curve method, the simplified calculation method of the horizontal static ultimate bearing capacity for all-vertical-piled wharf is proposed, and it is verified that the simplified method is reasonable by comparison with the FEM. Secondly, the displacement dynamic magnification factor for the all-vertical-piled wharf under wave cyclic loads and ship impact loads is calculated by the FEM and the theory formula based on the single degree of freedom （SDOF） system. The results obtained by the two methods are in good agreement with each other, and the simplified calculation method of the displacement dynamic magnification factor for all-vertical-piled wharf under dynamic loads is proposed. Then the simplified calculation method determining the dynamic response for the all-vertical-piled wharf is proposed in combination with P-Y curve method. That is, the dynamic response of the structure can be obtained through the static calculation results of P-Y curve method multiplied by the displacement dynamic magnification factor. The feasibility of the simplified dynamic response method is verified by compariso

关键词： all-vertical-piled wharf failure criterion plastic hinge dynamic amplification coefficient simplified calculation methods

Publication process involving the discovery of artemisinin (qinghaosu) before 1985

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Asian Pacific Journal of Tropical Biomedicine 2016年第6期6卷 461-467页

作者： Man-yuan wang School of Traditional Chinese Medicine Capital Medical University

All the original references were provided by the Nobel Laureate Youyou Tu. The publication process involving the discovery of artemisinin was collected and sorted by her first Ph D student, Associate Professor Man-yuan wang. Through the publication of this article, the journal expects to provide a reference to the scientists who dedicated to the research of artemisinin, especially those who are interested in the discovery process of artemisinin.

关键词： interested references Publication artesunate Nobel invention dedicated honored titled Figure

Canopy morphological changes and water use efficiency in winter wheat under different irrigation treatments

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Journal of Integrative Agriculture 2020年第4期19卷 1105-1116页

作者： ZHAO Hong-xiang ZHANG Ping wang yuan-yuan NING Tang-yuan XU Cai-long wang Pu College of Agronomy Shandong Agricultural UniversityTai'an 271018P.R.China College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193P.R.China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China

Water is a key limiting factor in agriculture. Water resource shortages have become a serious threat to global food security. The development of water-saving irrigation techniques based on crop requirements is an important strategy to resolve water scarcity in arid and semi-arid regions. In this study, field experiments with winter wheat were performed at Wuqiao Experiment Station, China Agricultural University in two growing seasons in 2013-2015 to help develop such techniques. Three irrigation treatments were tested: no-irrigation(i.e., no water applied after sowing), limited-irrigation(i.e., 60 mm of water applied at jointing), and sufficient-irrigation(i.e., a total of 180 mm of water applied with 60 mm at turning green, jointing and anthesis stages, respectively). Leaf area index(LAI), light transmittance(LT), leaf angle(LA), transpiration rate(Tr), specific leaf weight, water use efficiency(WUE), and grain yield of winter wheat were measured. The highest WUE of wheat in the irrigated treatments was found under limited-irrigation and grain yield was only reduced by a small amount in this treatment compared to the sufficient irrigation treatment. The LAI and LA of wheat plants was lower under limited irrigation than sufficient irrigation, but canopy LT was greater. Moreover, the specific leaf weight of winter wheat was significantly lower under sufficient than limited irrigation conditions, while the leaf Tr was significantly higher. Correlation analysis showed that the increased LAI was associated with an increase in the leaf Tr, but the specific leaf weight had the opposite relationship with transpiration. Optimum WUE occurred over a reasonable range in leaf Tr. In conclusion, reduced irrigation can optimize wheat canopies and regulate water consumption, with only small reductions in final yield, ultimately leading to higher wheat WUE and water saving in arid and semi-arid regions.

关键词： winter wheat limited-irrigation canopy characteristics transpiration rate water use efficiency

Further Extended Jacobi Elliptic Function Rational Expansion Method and New Families of Jacobi Elliptic Function Solutions to （2＋1）-Dimensional Dispersive Long Wave Equation

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Communications in Theoretical Physics 2006年第2期45卷 199-206页

作者： ZHANG yuan-yuan wang Qi ZHANG Hong-Qing Department of Applied Mathematics Dalian University of Technology Dalian 116024 China

In this paper, a further extended Jacobi elliptic function rationM expansion method is proposed for constructing new forms of exact solutions to nonlinear partial differential equations by making a more general transformation. For illustration, we apply the method to （2＋1）-dimensionM dispersive long wave equation and successfully obtain many new doubly periodic solutions. When the modulus m→1, these sohitions degenerate as soliton solutions. The method can be also applied to other nonlinear partial differential equations.

关键词： doubly periodic solution soliton solution (2+1)-dimensional dispersive long wave equation

Nanowire-mediated miRNA delivery

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Science China(Life Sciences) 2024年第11期67卷 2532-2534页

作者： yuan wang Bing Chen Laboratory for Biomaterials and Drug Delivery Department of AnesthesiologyDivision of Critical Care MedicineBoston Children’s HospitalHarvard Medical SchoolBoston 02115USA College of Electronic and Optical Engineering and College of Flexible Electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210023China

In the ever-evolving nanomedicine and biotechnology,the pursuit of advanced drug delivery systems that induce precise positioning and targeting in the complex biological landscape for personalized and efficient therapies has become a paramount endeavor(Vargason et al.,2021).Central to this trend is the delivery of functional microRNAs(miRNAs),which play crucial roles in regulating gene expression(Li et al.,2021).Specifically,by binding to target messenger RNAs(mRNAs),miRNAs can control protein synthesis or lead to mRNA degradation through various cellular processes such as differentiation,proliferation,apoptosis,and immune *** processes are essential for regenerative medicine,immune modulation,and disease treatment(e.g.,cancers,chronic infections and autoimmune disorders)where gene expression is dysregulated(Kara et al.,2022).

关键词： precise landscape

Multi-Behavior Fusion Based Potential Field Method for Path Planning of Unmanned Surface Vessel

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China Ocean Engineering 2019年第5期33卷 583-592页

作者： FU Ming-yu wang Sha-sha wang yuan-hui College of Automation Harbin Engineering University

The problem of the unmanned surface vessel (USV) path planning in static and dynamic obstacle environments is addressed in this paper. Multi-behavior fusion based potential field method is proposed, which contains three behaviors: goal-seeking, boundary-memory following and dynamic-obstacle avoidance. Then, different activation conditions are designed to determine the current behavior. Meanwhile, information on the positions, velocities and the equation of motion for obstacles are detected and calculated by sensor data. Besides, memory information is introduced into the boundary following behavior to enhance cognition capability for the obstacles, and avoid local minima problem caused by the potential field method. Finally, the results of theoretical analysis and simulation show that the collision-free path can be generated for USV within different obstacle environments, and further validated the performance and effectiveness of the presented strategy.

关键词： USV path planning potential field method multi-behavior fusion activation conditions local minima