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VOC emission caps constrained by air quality targets based on response surface model:A case study in the Pearl River Delta Region,China

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Journal of Environmental Sciences 2023年第1期123卷 430-445页

作者： Ya’nan Hu bowen shi Xin Yuan Chuanzeng Zheng Qing’e Sha Yufan Yu Zhijiong Huang Junyu Zheng Institute for Environmental and Climate Research Jinan UniversityGuangzhou 511436China Guangdong Polytechnic of Environmental Protection Engineering Guangzhou 528216China

Because of the recent growth in ground-level ozone and increased emission of volatile organic compounds(VOCs),VOC emission control has become a major concern in China.In response,emission caps to control VOC have been stipulated in recent policies,but few of them were constrained by the co-control target of PM_(2.5)and ozone,and discussed the factor that influence the emission cap formulation.Herein,we proposed a framework for quantification of VOC emission caps constrained by targets for PM_(2.5)and ozone via a new response surface modeling(RSM)technique,achieving 50%computational cost savings of the quantification.In the Pearl River Delta(PRD)region,the VOC emission caps constrained by air quality targets varied greatly with the NOxemission reduction level.If control measures in the surrounding areas of the PRD region were not considered,there could be two feasible strategies for VOC emission caps to meet air quality targets(160μg/m^(3)for the maximum 8-hr-average 90th-percentile(MDA8-90%)ozone and 25μg/m^(3)for the annual average of PM_(2.5)):a moderate VOC emission cap with60%NOxemission reductions.If the ozone concentration target were reduced to 155μg/m^(3),deep NOxemission reductions is the only feasible ozone control measure in PRD.Optimization of seasonal VOC emission caps based on the Monte Carlo simulation could allow us to gain higher ozone benefits or greater VOC emission reductions.If VOC emissions were further reduced in autumn,MDA8-90%ozone could be lowered by 0.3-1.5μg/m^(3),equaling the ozone benefits of 10%VOC emission reduction measures.The method for VOC emission cap quantification and optimization proposed in this study could provide scientific guidance for coordinated control of regional PM_(2.5)and O_(3)pollution in China.

关键词： Volatile organic compounds Emission caps Air quality targets Response surface model Monte Carlo(MC)simulations

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Semi-quantitatively Predicting the Residence Time of Three Natural Products on Endothelin Receptor A by Peak Profiling Using the Receptor Functionalized Macroporous Silica Gel as Stationary Phase

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Journal of Analysis and Testing 2023年第1期7卷 40-52页

作者： Ping Li bowen shi Linkang Li Jiatai Yin Qingqing Yao Tian Yang Xiaomin Huang Xu Ji Chaoni Xiao Qian Li Xinfeng Zhao College of Life Sciences Northwest UniversityXi’an 710069China Xi’an International Medical Center Hospital Xi’an 710100China Engineering Research Center of Tibetan Medicine Detection Technology Ministry of EducationXizang Minzu UniversityXianyang 712082China

Drug-receptor interaction analysis has been broadly adopted as a tool for the evaluation of the drug-like property.Nowadays,growing evidence has demonstrated that drug e fficacy and safety are highly related to residence time,which equals the reciprocal of the dissociation rate constant(k_(d))of a drug to its target protein.Using endothelin receptor A(ET_(A)R)as a probe,we immobilized the receptor on the surface of macroporous silica gel through a covalent interaction between the epidermal growth factor tyrosine kinase(EGFR)at the C terminal of ET_(A)R and the covalent inhibitor ibrutinib modified on the gel in a one-step fashion.The a ffinity stationary phase was used to semi-quantitatively determine the residence time of natural products on ET_(A)R and evaluate their drug-like property.The k_(d)values of three specific ligands(bosentan,macitentan,and ambrisentan)to ET_(A)R were determined by nonlinear chromatography,peak profiling and peak_(d)ecay.Compared the data determined in free solution of the three methods,peak profiling is considered as the best-fit method for k_(d)determination.Thus,peak profiling was applied for predicting the residence time of three natural products(ferulic acid,berberine,and palmatine)on ET_(A)R.With the longest residence time of 61.11±3.47 s on ET_(A)R,palmatine was evaluated as the most potent compound,which could be developed as a long-acting lead for the receptor.We demonstrate that the high-performance a ffinity chromatography with immobilized ET_(A)R is an alternative for the semi-quantitative measurement of residence time for the drug-like property evaluation of natural products.

关键词： Endothelin receptor A Residence time Natural product Drug-like property

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Flexible,breathable,and reinforced ultra-thin Cu/PLLA porous-fibrous membranes for thermal management and electromagnetic interference shielding

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Journal of Materials Science & Technology 2023年第30期161卷 150-160页

作者： Jinlin Chang Chen Meng bowen shi Wenyuan Wei Renzhi Li Jinmin Meng Haobin Wen Xiangyu Wang Jun Song Zhirun Hu Zekun Liu Jiashen Li Department of Materials The University of ManchesterManchester M139PLUK School of Mechanical Aerospace and Civil EngineeringThe University of ManchesterManchester M139PLUK Department of Chemistry The University of ManchesterManchester M139PLUK Materdicine Lab School of Life SciencesShanghai UniversityShanghai 200444China Department of Electrical and Electronic Engineering The University of ManchesterManchester M139PLUK Botnar Research Center University of OxfordOld RoadHeadingtonOxford OX37LDUK

Electromagnetic interference shielding and thermal management by wearable devices show great po-tential in emerging digital healthcare.Conventional metal films implementing the functions must sacri-fice either flexibility or permeability,which is far from optimal in practical applications.In this work,an ultra-thin(15μm),flexible,and porous Cu/PLLA fibrous membrane is developed by depositing cop-per particles on the polymer substrate.With novel acetone&heat treatment procedure,the mem-brane is considerably stronger while maintaining the porous fibre structure.Its fantastic breathabil-ity and super high electrical conductivity(9471.8130 S/cm)enable the composites to have fast electri-cal heating characteristics and excellent thermal conductivity for effective thermal management.Mean-while,the porous polymer substrate structure greatly enhances the diffusion of conductive substances and increases the electromagnetic interference shielding effectiveness of the membranes(7797.98 dB cm^(2)/g at the H band and 8072.73 dB cm^(2)/g at the Ku band respectively).The composites present high flexibility,breathability,and strength with the functions of thermal management and electromag-netic shielding,showing great potential for future portable electronic devices and wearable integrated garments.

关键词： Electromagnetic interference shielding effectiveness Thermal management Thin films Metal-matrix composites

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慢性病共病对中国老年人健康相关生命质量的影响研究

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人口与发展 2024年第1期30卷 120-128页

作者：施博文熊巨洋华中科技大学同济医学院医药卫生管理学院湖北武汉430030

基于2018年中国健康与养老追踪调查数据,探讨慢性疾病数量及共病模式对老年人健康相关生命质量的影响。通过欧洲五维健康量表(EQ-5D)测量健康相关生命质量,分析老年人在五个维度(活动能力、自我照顾、日常活动、疼痛/不适和焦虑/沮丧)... 详细信息

基于2018年中国健康与养老追踪调查数据,探讨慢性疾病数量及共病模式对老年人健康相关生命质量的影响。通过欧洲五维健康量表(EQ-5D)测量健康相关生命质量,分析老年人在五个维度(活动能力、自我照顾、日常活动、疼痛/不适和焦虑/沮丧)中的表现及各维度的等级,并计算综合得分来评估老年人的健康状态。结果发现,患有慢性共病数量越多的老年人,其健康效用值越低。心脏代谢型、呼吸系统型、内脏关节炎型和认知障碍型4种慢性病共病模式对老年人健康的影响程度差异具有显著性(p<0.05),其中,内脏关节炎型慢性病共病模式对老年人健康的影响最大。未来,应加强对患有多重慢性病尤其是患有内脏关节炎型共病模式的老年人的早期筛查,制定针对“多病共存”特点的老年慢性病健康管理方案和干预措施,为我国积极应对健康老龄化和主动健康提供策略建议。

关键词：老年多重慢病患者共病模式健康相关生命质量健康管理

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Acoustic emission activity in directly tensile test on marble specimens and its tensile damage constitutive model

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International Journal of Coal Science & Technology 2018年第3期5卷 295-304页

作者： Ruifu Yuan bowen shi School of Energy Science and Engineering Henan Polytechnic University Jiaozuo 454003 Henan China Collaborative Innovation Center of Coal Work Safety of Henan Province Jiaozuo 454003 Henan China

For understanding acoustic emission (AE) activity and accumulation of micro-damage inside rock under pure tensile state, the AE signals has been monitored on the test of directly tension on two kinds of marble specimens. A tensile constitutive model was proposed with the damage factor calculated by AE energy rate. The tensile strength of marble was discrete obviously and was sensitive to the inside microdefects and grain composition. With increasing of loading, the tensile stress–strain curve obviously showed nonlinear with the tensile tangent modulus decreasing. In repeated loading cycle, the tensile elastic modulus was less than that in the previous loading cycle because of the generation of micro damage during the prior loading. It means the linear weakening occurring in the specimens. The AE activity was corresponding with occurrence of nonlinear deformation. In the initial loading stage which only elastic deformation happened on the specimens, there were few AE events occurred; while when the nonlinear deformation happened with increasing of loading, lots of AE events were generated. The quantity and energy of AE events were proportionally related to the variation of tensile tangent modulus. The Kaiser effect of AE activity could be clearly observed in tensile cycle loading. Based on the theory of damage mechanics, the damage factor was defined by AE energy rate and the tensile damage constitutive model was proposed which only needed two property constants. The theoretical stress–strain curve was well fitted with the curve plotted with tested datum and the two property constants were easily gotten by the laboratory testing.

关键词：损坏因素测试资料张力标本模型组成排放声学

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Effective Antarctic krill oil extraction using switchable hydrophilicity solvents

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Marine Life Science & Technology 2020年第1期2卷 41-49页

作者： Weiwei Sun Wencan Hua bowen shi Changhu Xue Xiaoming Jiang College of Food Science and Engineering Ocean University of ChinaQingdao 266003China Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology Qingdao 266237China

Antarctic krill has been widely studied because of its abundant biomass,rich nutritional value,and great production potential.Notably,krill oil(KO)is rich in phospholipids(PLs),polyunsaturated fatty acids(PUFAs),and astaxanthin.A method based on a green switchable hydrophilicity solvent N,7V-dimethyIcyclohexylamine(DMCHA),which can reversibly change from oil soluble to water soluble in the presence of CO2 was used to extract KO from frozen Antarctic krill as it consumes less energy than traditional methods.We showed that DMCHA destroyed the surface structure of Antarctic krill and accelerated the dissolution of KO.In addition,this method enabled the PL extraction to reach up to 80.2%of total PLs,among which PC accounted for the highest proportion,up to 90.91%in PL.In fact,the astaxanthin extraction reached up to 81.44%of total astaxanthin while the fatty acid(FA)extraction up to 84.35%.The KO extracted through DMCHA was rich in PUFA,up to 47.74%,and the content of EPA+DHA reached 42.16%of total FA content.Furthermore,the amount of residual solvent in the lipid phase was just 0.23%of the DMCHA used for the extraction and the recovery rate of solvent was up to 93.2%.Our results demonstrated the high efficiency of oil extraction and the environmental friendliness of this method.

关键词： Krill oil Switchable hydrophilicity solvents N,7V-dimethylcyclohexylamine Phospholipids Polyunsaturated fatty acids Astaxanthin

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基于CFD-DEM算法的气力输送气固两相流特性分析

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化工进展 2024年第3期43卷 1133-1144页

作者：禹言芳石博文孟辉波丁鹏程姚云娟沈阳化工大学机械与动力工程学院辽宁沈阳110142 中国石油大学(华东)新能源学院山东青岛266580

超轻粉体颗粒由于质量较小,在运输过程中易受气流扰动而飘散,物料的管道气力输送过程不稳定,易发生堵塞。为了研究超轻粉体颗粒在旋流气力输送中气固两相流流动特性,采用计算流体力学与离散单元法(CFD-DEM),对Komax型静态混合器内气固... 详细信息

超轻粉体颗粒由于质量较小,在运输过程中易受气流扰动而飘散,物料的管道气力输送过程不稳定,易发生堵塞。为了研究超轻粉体颗粒在旋流气力输送中气固两相流流动特性,采用计算流体力学与离散单元法(CFD-DEM),对Komax型静态混合器内气固两相流动特性进行数值模拟研究。研究发现,带有Komax型元件的水平管道可以改变颗粒的流动情况,改善了水平管道内颗粒堆积和分布不均匀的现象;分别从颗粒相和流体相的流动状态分析得到元件长径比Ar=3时为最优几何结构;通过正交实验极差分析得到影响气固两相流动特性的因素顺序:输送气速>颗粒质量流量>颗粒粒径。当元件Ar=3时,颗粒-颗粒和颗粒-管壁的碰撞次数与碰撞强度呈现负相关,结合出口颗粒流分散状态,优选输送气速为3~4m/s;主要考虑输送气速对管内压降的影响,提出了带有Komax型元件的水平管道气力运输过程中压降与输送气速和轴向位置的经验拟合式。

关键词：静态混合器多相流稀相旋流气力输送颗粒流 CFD-DEM耦合法流动特性

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非牛顿流体在叶片式静态混合器中的传热强化特性

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化工进展 2024年第3期43卷 1145-1156页

作者：禹言芳丁鹏程孟辉波石博文姚云娟沈阳化工大学机械与动力工程学院辽宁沈阳110142 中国石油大学(华东)新能源学院山东青岛266580

非牛顿流体在化学、食品和材料等领域具有关键作用,但高表观黏度使其通常具有低传热特性。叶片式静态混合器作为一种高效的传热强化设备,在化工过程强化中具有鲜明的技术特色。本文针对非牛顿流体在Kenics静态混合器(KSM)和Lightnin静... 详细信息

非牛顿流体在化学、食品和材料等领域具有关键作用,但高表观黏度使其通常具有低传热特性。叶片式静态混合器作为一种高效的传热强化设备,在化工过程强化中具有鲜明的技术特色。本文针对非牛顿流体在Kenics静态混合器(KSM)和Lightnin静态混合器(LSM)内的流动和传热特性进行了比较研究。重点分析了体积流量、元件长径比及流体浓度等参数对羧甲基纤维素(CMC)幂律流体的流动及传热影响。结果表明,在相同工况下,随着CMC溶液的体积流量增大,管道内的换热系数和压降均增大。静态混合元件的插入使得换热系数和压降显著提高且Lightnin元件产生的影响更明显。元件长径比和CMC溶液浓度影响流体在管道内的流动和换热。随着长径比的减小,传热性能得到提高,但其增大的阻力系数影响占据主导地位,综合换热性能系数(PEC)降低。溶液浓度的增大使得管道换热能力逐步削弱,并对管道内压降的提升有显著影响,综合换热性能降低。总结得出,在体积流量为4.5×10^(-4)m^(3)/s,质量分数为0.374%、长径比为3.0时,KSM的PEC最大为2.114。

关键词：非牛顿流体静态混合器传热综合换热性能系数数值模拟

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A magnetic field strategy to porous Pt-Ni nanoparticles with predominant (111) facets for enhanced electrocatalytic oxygen reduction

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Journal of Energy Chemistry 2021年第2期30卷 192-196,I0007页

作者： Xiao Lyu Weina Zhang Shuang Liu Xiaoyang Wang Gen Li bowen shi Kai Wang Xin Wang Qiang Wang Yi Jia School of Materials Science and Engineering Shenyang Ligong UniversityShenyang 110159LiaoningChina State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819.LiaoningChina Key Laboratory of Electromagnetic Processing of Materials Northeastern UniversityShenyang 110819LiaoningChina School of Environment and Science Queensland Micro-and Nanotechnology CentreGriffith UniversityNathan Campus.QLD 4111Australia

For the first time, we developed porous Pt-Ni alloying nanoparticles with predominant(111) facets under intense magnetic fields. Electrochemical analysis revealed that the Pt-Ni alloying nanoparticles obtained at 2 Tesla exhibited a superior catalytic activity and durability for oxygen reduction reaction. This work demonstrated that the imposition of intense magnetic field could be considered as a new approach for developing efficient alloying electrocatalysts with preferential facets.

关键词： Intense magnetic field Porous Pt-Ni alloy Electrocatalyst Oxygen reduction reaction

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Fluidized bed combustion of high water content alcohol extracted herb residue and the impacts of blending wasted activated coke

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Carbon Resources Conversion 2023年第1期6卷 11-19页

作者： Xuan Liu Xinyu Zhu Wenyan Wang bowen shi Guangyi Zhang Jianling Zhang Jiancheng Yang Yanming Shen School of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142LiaoningChina School of Ecology and Environment Beijing Technology and Business UniversityBeijing 100048China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China China Power Engineering Consulting Group Co. LtdBeijing 100120China

Combustion of herb residues(HRs)for heat recovery is a good way for their utilization,but there exists such a problem as high concentration NOx emission in flue gas.The alcohol extracted herb residue(AEHR),one special type of HRs,was chosen as the object and was subjected to immediate combustion in a fluidized bed reactor to investigate the characteristics of its resulting NOx emission.The results showed that,most of the NOx in the flue gas was produced from the char nitrogen(C-N);as the fuel water content increased,the NOx emission concentration exhibited a trend of first decreasing and then increasing;and a properly low combustion temperature inhibited the NOx emission upon the premise of ensuring full combustion.Air staging combustion was adopted to effectively control NOx:the NOx emission concentration in the flue gas was reduced to 296 mg⋅m􀀀3 and the NOx emission reduction rate reached 46.51%compared to conventional combustion.Co-combustion by blending wasted activated coke(WAC)into the AEHR helped both stabilize the combustion state and reduce further the NOx emission.When the blending ratio of WAC fell within a proper range of 20-30%,the NOx emission concentration in the flue gas was as low as 231.4 mg⋅m􀀀3.In addition to the dilution effect of the combustion flue gas of the blended WAC,the local reducing atmosphere caused by its incomplete combustion as well as its strong absorbability and catalytical effect was accountable for the further decrease of the NOx emission concentration.

关键词： Alcohol extracted herb residue Wasted activated coke Fluidized bed combustion NOx Air staging combustion

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