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Journal of Energy Chemistry 2021年第2期30卷 20-25,I0002页

作者： Jiejie Li jian Liu bo Yang School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China CAS Key Laboratory of Low-Carbon Conversion Science&Engineering Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China University of Chinese Academy of Sciences Bejing 100049China

Single-atom metal-nitrogen-graphene(M-N-Gra) catalysts are promising materials for electrocatalytic CO_(2) reduction reaction(CO_(2) RR). However, theoretical explorations on such systems were greatly hindered because of the complexity in modeling solid/liquid interface and electrochemical environment. In the current work, we investigated two crucial processes in CO_(2) RR, i.e. adsorption and desorption of CO_(2) and CO at Fe-N_(4) center, with an explicit aqueous model. We used the ab initio molecular dynamics simulations associated with free energy sampling methods and electrode potential analysis to estimate the energetics under electrochemical environment, and found significant difference in aqueous solution compared with the same process in vacuum. The effect of applied electrode potential on the adsorption structures,charge transfer and free energies of both CO_(2) and CO on Fe-N-Gra was thoroughly discussed. These findings bring insights in fundamental understandings of the CO_(2) RR process under realistic conditions, and facilitate future design of efficient M-N-Gra-based CO_2 RR catalysts.

关键词： Single atom catalyst Electroreduction of CO_(2) Adsorption CO Ab initio molecular dynamics

Ultrasound-responsive Homopolymer Nanoparticles

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Chinese Journal of Polymer Science 2020年第4期38卷 349-356,I0006页

作者： bo Yang jian-Zhong Du Department of Orthopedics Shanghai Tenth People's HospitalTongji University School of MedicineShanghai 200072China Department of Polymeric Materials School of Materials Science and EngineeringKey Laboratory of Advanced Civil Engineering Materials of Ministry of EducationTongji UniversityShanghai201804China

Nonin vasive ultraso und is a more effective strategy for on-demand drug delivery of polymeric nano particles than many other ***,the preparation of ultrasound-responsive homopolymer nanoparticles is still very *** this study,we disclose the regulating factors of ultrasound responsiveness of homopolymer nanoparticles and the disaggregation behavior of homopolymer nanoparticle *** nanoparticles such as vesicles and large compound micelles(LCMs)are self-assembled from poly(methoxyethyl methacrylate)(PMEMA)and poly(amic acid)(PAA),*** ultrasound responsiveness of PAA vesicles at metastable state could be regulated by tuning the self-assembly temperature(7^),and was optimized when Ts is around the glass transition temperature(7g)of ***,the PMEMA LCMs did not respond to ultrasound as they are at stable *** the other hand,poly(2-(2-ethoxyethoxy)ethyl acrylate)(PEEA)could self-assemble into vesicle aggregates or complex micelle aggregates,which were dissociated upon ***,the above findings provide us with a fresh in sight for designing ultrasound-responsive polymeric nanoparticles.

关键词： Ultrasound responsiveness Homopolymers Vesicles Micelles Self-assembly

茶叶不同添加方式对太平猴魁绿茶啤酒风味影响

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食品与发酵工业 2025年第1期51卷 81-89页

作者：林睿吴殿辉彭政聪谢广发陆健工业生物技术教育部重点实验室粮食发酵与食品生物制造国家工程研究中心江苏省生物活性制品加工工程技术研究中心江南大学生物工程学院江苏无锡214122 浙江省污染暴露与健康干预重点实验室浙江树人学院生物与环境工程学院浙江杭州310015

绿茶作为辅料增添啤酒风味已被众多研究者们广泛关注,但绿茶的添加方式对啤酒风味的影响鲜有研究。该文将太平猴魁以3种不同投料方式加入到啤酒的发酵中,来研究清香型绿茶投料方式对啤酒挥发性风味物质的影响。采用GC-MS对不同组啤酒的... 详细信息

绿茶作为辅料增添啤酒风味已被众多研究者们广泛关注,但绿茶的添加方式对啤酒风味的影响鲜有研究。该文将太平猴魁以3种不同投料方式加入到啤酒的发酵中,来研究清香型绿茶投料方式对啤酒挥发性风味物质的影响。采用GC-MS对不同组啤酒的风味物进行鉴定分析,通过对多种风味物质的香味活性值(odor activity values,OAV)筛选以及偏最小二乘-判别分析(partial least squares-discriminant analysis,PLS-DA),研究不同工艺下绿茶啤酒的香气组分差异和关键香气组分标记物。结果表明,不同工艺下太平猴魁绿茶啤酒的挥发性成分差异显著(P<0.05)。在太平猴魁绿茶啤酒中,以OAV≥0.1筛选出了20种香气成分,其中β-紫罗兰酮、异戊醛、β-环柠檬醛、蘑菇醇和香茅醇这5种挥发性成分来源于太平猴魁,并且在冷萃的条件下能更多保留这类风味成分,使得啤酒具有更加丰富的风味属性。根据PLS-DA模型进一步筛选得到了9种变量投影重要性值大于1的物质,其中月桂酸乙酯、乙酸苯乙酯、月桂醇、正癸醛和壬醛这类香气化合物对啤酒的清香和花香风味属性具有重要贡献,可作为区分不同工艺下太平猴魁绿茶啤酒的香气组分标记物。

关键词：绿茶啤酒太平猴魁气相色谱-质谱联用挥发性成分偏最小二乘-判别分析

Inter-granular exchange coupling and magnetic anisotropy of Ta/Ru/Co-23 at%Pt perpendicular thin films with different Ru underlayer thicknesses

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Rare Metals 2016年第6期35卷 463-470页

作者： Na Xiao bo Yang jian-Sheng Wang Song Li Yu-Ping Ren Gao-wu Qin Research Academy Northeastern University Shenyang 110819China Key Laboratory for Anisotropy and Texture of Materials (MoE) School of Materials Science and Engineering Northeastern University Shenyang 110819 China

In the present work, a series of Ta/Ru/Co- 23 at%Pt thin films with varied Ru underlayer thicknesses were fabricated by magnetron sputtering. All of the films show c-axis preferred orientation perpendicular to the film surface. The drop of c/a ratio and lattice expansion of Co- Pt layer with the increase in Ru underlayer thickness was revealed by X-ray diffraction （XRD）. The coercivity of the Ta/Ru/Co-Pt thin films increases drastically with Ru underlayer thickness increasing, due to the enhancement of effective magneto-crystalline anisotropy constant and exchange decoupling of magnetic nano-grains. The enhancement of effective magneto-crystalline anisotropy constant is ascribed to the lattice deformation of Co-Pt layer by mismatching the Ru layer and Co-Pt surface. Moreover, the exchange decoupling of magnetic nanograins is attributed to the further isolation of magnetic nano-grains.

关键词： Co-Pt Perpendicular recording media Crystallographic orientation Exchange coupling

Influence of modeling approaches and structural parameters on impact resistance of the human porous cranium

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Acta Mechanica Sinica 2021年第6期37卷 910-928,I0001页

作者： Qianqian wu jian Xiong Center for Composite Materials and Structures Harbin Institute of TechnologyHarbin150001China

Failure mechanism and impact resistance of a human porous cranium are studied in detail by means of theoretical and numerical *** is hypothesized that pore distribution of a cranium directly affects cranial energy absorption,and a stretched beam model and a real beam model are taken as the example for the ***,for the purpose of comparison with numerical results,a theoretical model is also proposed for the prediction of residual velocity and contact force of the impactor for an impacted *** with the real beam model,the stretched beam model containing through-thickness pores is easily deformed under the impact,thereby buffering well the external impact *** energy absorption efficiency of both the stretched beam model and real beam model is concerned with the threshold velocity for penetration which is directly related to the size of the structural damage ***,there is good agreement between numerical and theoretical *** addition,the effect of structural geometric parameters(shape and size of the impactor)on the impact resistance of the skull bone is theoretically *** study provides reference for the evaluation of the energy absorption and failure mechanism of the skull under impact loads.

关键词： Skull porous structure Impact resistance Modeling approach Theoretical prediction Influence of structural parameters

Treatment and hydraulic performances of the NiiMi process for landscape water

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第2期11卷 132-142页

作者： jian YANG Liang-bo ZHANG Yi-fan wu Ya-yi WANG Cui LI Wen LIU State Key Laboratory of Pollution Control and Resources Reuse School of Environmental Science and Engineering Tongji University Shanghai 200092 China

This paper describes the NiiMi process designed to treat landscape water. The main aim of the research was to investigate the feasibility of NiiMi for removing organic and nutriment materials from landscape water. During the batch-scale NiiMi operation, the removal rates of color ranged from 66.7%o-80% , of turbidity from 31.7%-89.3%o, of chemical oxygen demand （COD） from 7%-36.5%, of total phosphor （TP） from 43%-84.2%, of soluble phosphate from 42.9%-100%, of total nitrogen （TN） from 4.2%-46.7%, and of NH4^＋-N from 39.3%-100% at the hydraulic loading of 0.2 m^3/（m^2·d）. Results showed that the removal efficiencies of COD, TP, soluble phosphate and TN decreased with the decline in the temperature. The NiiMi process had a strong shock loading ability for the removal of the organics, turbidity, TP, soluble phosphate, TN and NH4^＋-N. Three sodium chloride tracer studies were conducted, labeled as TS 1, TS2, and TS3, respectively. The mean hydraulic retention times （mean HRTs） were 31 h and 28 h for TSI and TS2, respectively, indicating the occurrence of a dead zone volume of 12% and 20% for TS 1 and TS2, respectively. TS 1 and TS2 displayed the occurrence of short-circuiting in the NiiMi system. The comparison results between TS1 and TS2 were further confirmed in the values obtained for some indicators, such as volumetric efficiency （e）, short-circuiting （S）, hydraulic efficiency （2） and number of continuously stirred tank reactors （N）.

关键词： NiiMi system Landscape water Purification efficiency Hydraulic efficiency Tracers

Effect of gastric fluid on adsorption and desorption of endocrine disrupting chemicals on microplastics

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Frontiers of Environmental Science & Engineering 2022年第8期16卷 193-205页

作者： Jie wu jian Lu Jun wu CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone Research(YIC)Chinese Academy of Sciences(CAS)Shandong Key Laboratory of Coastal Environmental ProcessesYICCASYantai 264003China University of Chinese Academy of Sciences Beijing 100049China Yantai Research Institute Harbin Engineering UniversityYantai 264006China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Microplastics and endocrine disrupting chemicals are emerging pollutants in the marine environment because of their potential *** effect of gastric fluid on the adsorption and desorption of 17β-estradiol(E2)and 17α-ethynylestradiol(EE2)to microplastics was *** adsorption and desorption isotherms of E2/EE2 on microplastics could be well fitted by the Freundlich model while the Gibbs free energy of these processes were negative,proving that the reaction occurred spontaneously on the heterogeneous surface of the *** ratios of EE2(55%–59%)on PVC were larger than that of E2(49%–55%)to indicate that EE2 was less stable in gastric fluid,which could be explained by the fact that the hydrophobicity of EE2 was greater than E2.E2/EE2 were more easily desorbed from PVC in the gastric fluid and the desorption amount(5.25–12.91/7.19–17.86μg/g)increased by 2.51 times in comparison with that in saline solution(2.22–7.81/2.87–10.80μg/g).The decrease of pH and the increase of ionic strength in gastric fluid could further strengthen desorption of E2/EE2 from *** promotion of gastric juice on desorption of PVC was achieved by reducing the hydrophobicity of the PVC *** desorption rate of E2/EE2 at 18°C and 38°C was respectively 44%–47%/46%–50%and 49%–55%/56%–59%,indicating that PVC loaded with E2/EE2 had a relatively greater risk of releasing pollutants in the gastric fluid of constant temperature marine organisms while higher temperatures exposed higher hazards for variable temperature *** interaction between microplastics and pollutants might be mainly hydrophobic interaction.

关键词： Microplastics Gastric fluid Endocrine-disrupting chemicals Adsorption Desorption

Adsorption and desorption of steroid hormones on saline soil

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Frontiers of Environmental Science & Engineering 2022年第11期16卷 177-190页

作者： Jie wu jian Lu Jun wu CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China Shandong Key Laboratory of Coastal Environmental Processes Yantai 264003China University of Chinese Academy of Sciences Beijing 100049China Yantai Research Institute Harbin Engineering UniversityYantai 264006China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Soil organic matter content was the main driving factor affecting adsorption and desorption process of 17β-estradiol(E2)and 17α-ethynylestradiol(EE2)on saline *** adsorption and desorption of E2 and EE2 on three saline soils showed the similar behavior that soil with the highest organic content possessed the highest adsorption capacity and the lowest desorption capacity for E2 and *** adsorption capacity of untreated soil samples(with organic matter)was larger than that of soil samples without organic *** soil with the largest adsorption capacity,adsorption capacity of E2/EE2 on the untreated soil and soil colloid(with organic matter)respectively reached 0.15/0.30μg/g and 0.16/0.33μg/g while the soil and soil colloid without organic matter hardly adsorbed *** adsorption capacity of E2/EE2 at the initial concentration of 100μg/L was 25/15 times higher than that at the initial concentration of 5μg/L.E2 and EE2 had the same adsorption sites on saline soil while EE2 possessed higher competition intensity for adsorption sites than ***-first-order model(R^(2)=0.995–0.986)and Langmuir model(R^(2)=0.989–0.999)could better fit the adsorption process of E2 or *** thermodynamic study further showed that the adsorption of E2/EE2 on saline soil was a spontaneous exothermic *** desorption capacity of EE2/E2 accounted for 40%/78%of the total adsorption capacity to possibly exert potential risk to the *** variation of the salinity led to the variation of soil organic carbon which subsequently changed the adsorption and desorption behaviors of endocrine disrupting chemicals in coastal saline *** study provides a new insight on the interfacial behavior of endocrine disrupting chemicals on saline soil.

关键词： Saline soil Steroid hormones Adsorption Desorption Soil organic matter

The chemical constituents of the tissue culture cells of Daphne giraldii cullus

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Chinese Chemical Letters 2009年第11期20卷 1335-1338页

作者： Zhao Hua wu Li bo Wang Hui Yuan Gao jian Huang bo Hang Sun Shu Hui Li Li Jun wu School of Traditional Chinese Materia Medica Shenyang Pharmaceutical University Shenyang 110016 China Department of Pharmacology Mudanjiang Medical College Mudanjiang 157001 China

Three compounds were isolated from the tissue culture cells of Daphne giraldii cullus, their structures were identified as daphneolone （1）, S-（＋）-1-（4-hydroxy-3-methoxyphenyl）-3-hydroxy-5-phenyl-l-pentanone （2）, S-（＋）-1-（4-methoxyphenyl）-3- hydroxy-5-phenyl-l-pentanone （3）, and among them, 2 was a new compound, 3 was a novel natural product.

关键词： Tissue culture cells Daphne giraldii cullus Chemical constituents Structural identification

Electric and mechanical performances of Bi_(0.5)Sb_(1.5)Te_(3) prepared by spark plasma sintering

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Rare Metals 2006年第Z2期25卷 227-231页

作者： XIAO bo CHEN Hui wu borong ZHU Lei LIU Mingyi jian Xuyu LI Lin Energy Materials and Technology Research Institute General Research Institute for Non-ferrous MetalsBeijing 100088China Tianjin Institute of Power Sources Tianjin 300381China

Thermoelectric(TE)materials are a kind of functional materials which can be used to convert directly heat energy to electricity or *** thermoelectric effects hold great potential for application in power generation and ***_(2)Te_(3)and its alloys are well known as best TE materials currently available near room *** paper studies respectively the effects of spark plasma sintering(SPS)on electric performance of Bi_(0.5)Sb_(1.5)Te_(3)thermoelectric materials that are prepared through vacuum melting and ball *** X-ray Diffraction and cold field emission scanning electric microscope s4800,the phase constituent and microstructure of the TE materials samples were *** conductivity and power factor can be improved with the rise of Spark Plasma Sintering temperature(from 300 to 500℃)and pressure(from 30 to 60 MPa),and the density and mechanical strength of Bi_(0.5)Sb_(1.5)Te_(3)thermoelectric material increase,too.

关键词： thermoelectric material spark plasma sintering electric conductivity