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Ti^(3+)/Ti^(4+)and Co^(2+)/Co^(3+)redox couples in Ce-doped Co-Ce/TiO2 for enhancing photothermocatalytic toluene oxidation

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Journal of Environmental Sciences 2025年第3期149卷 164-176页

作者： Guanghui li Xiaolan li Xinhui Hao Qiang li Meng Zhang Hongpeng Jia Xiamen Key Laboratory of Materials for Gaseous Pollutant Control Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China CAS Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

Cerium and cobalt loaded Co-Ce/TiO_(2)catalyst prepared by impregnation method was investigated for photothermal catalytic toluene *** on catalyst characterizations(XPS,EPR and H2-TPR),redox cycle between Co and TiO_(2)(Co^(2+)+Ti^(4+)↔Co^(3+)+Ti^(3+))results in the formation of Co^(3+),Ti^(3+)and oxygen vacancies,which play important roles in toluene catalytic oxidation *** introduction of Ce brings in the dual redox cycles(Co^(2+)+Ti^(4+)↔Co^(3+)+Ti^(3+),Co^(2+)+Ce4+↔Co^(3+)+Ce3+),further promoting the elevation of reaction sites *** full spectrum irradiation with light intensity of 580mW/cm^(2),Co-Ce/TiO_(2)catalyst achieved 96%of toluene conversion and 73%of CO_(2)yield,obviously higher than Co/P25 and Co/TiO_(2).Co-Ce/TiO_(2)efficiently maintains 10-hour stability test under water vapor conditions and exhibits better photothermal catalytic performance than counterparts under different wavelengths *** catalytic reaction displays improved activities compared with thermal catalysis,which is attributed to the promotional effect of light including photocatalysis and light activation of reactive oxygen species.

关键词： Photothermal catalysis Redox cycle Oxygen vacancy VOCs Titanium dioxide

Holographic images of a charged black hole in Lorentz symmetry breaking massive gravity

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 59-72页

作者： Xiao-Xiong Zeng li-Fang li Pan li Bo liang Peng Xu College of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China Department of Mechanics Chongqing Jiaotong UniversityChongqing 400074.China Center for Gravitational Wave Experiment National Microgravity LaboratoryInstitute of MechanicsChinese Academy of SciencesBeijing 100190China Lanzhou Center of Theoretical Physics Lanzhou UniversityLanzhou 730000China

Using the AdS/CFT correspondence,this paper investigates the holographic images of a charged black hole within the context of Lorentz symmetry breaking massive *** photon rings,luminosity-deformed rings,or light points from various observational perspectives are *** also study the influences of both the chemical potential and temperature on the Einstein *** the previous work,which primarily examines the effect of chemical potential on ring radius at high temperatures and find no change in the radius with varying chemical potential,we also investigate the effect of chemical potential on the ring radius at low temperature besides at high *** findings indicate that at low temperatures,the photon ring radius decreases with increasing of chemical potential,while at high temperatures,the results are consistent with previous ***,we explore the impact of the model parameterλon the Einstein ring radius and find the the ring radius increases as the model parameterλ*** interestingly,for the large chemical potential,u=1,the temperature dependence of the photon ring radius is reversed forλ=2 andλ=***,for a small chemical potential u=0.1,the temperature dependence of the Einstein ring stays the same asλ=2 andλ=4.

关键词： AdS/CFT correspondence holographic images massive gravity black holes

采用血管铸型技术和数字减影造影技术建立及鉴定脊髓缺血再灌注损伤模型

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中国组织工程研究与临床康复 2007年第40期11卷 8193-8195页

作者：张俐刘臻博李长征张文光翁国星福建中医学院骨伤系福建省福州市350003 福建中医学院中西医结合系福建省福州市350003 福建省立医院福建省福州市350003

目的:通过血管铸型技术和数字减影造影技术,观察大鼠脊髓血供来源,确立最佳的夹闭部位,以此建立和鉴定脊髓缺血再灌注损伤模型。方法:实验于2006-08-30在福建中医学院骨伤系创伤修复与重建实验室完成。实验材料:选用20只清洁级SD大鼠,... 详细信息

目的:通过血管铸型技术和数字减影造影技术,观察大鼠脊髓血供来源,确立最佳的夹闭部位,以此建立和鉴定脊髓缺血再灌注损伤模型。方法:实验于2006-08-30在福建中医学院骨伤系创伤修复与重建实验室完成。实验材料:选用20只清洁级SD大鼠,体质量490～530g,雌雄各半,由上海实验动物中心提供。大鼠单笼饲养在恒温(20±2)℃,恒湿(50±5)%,人工光照明暗各12h的安静环境中,自由进食进水。实验过程中实验动物处置符合实验动物伦理学标准。实验方法:运用血管铸型技术制作大鼠动脉铸型标本,观察脊髓血供情况,确立最佳的夹闭部位。采用Zivin法改进复制模型,在最佳的夹闭部位夹闭腹主动脉制作脊髓缺血再灌注损伤模型,使用数字减影心血管机观察缺血前、缺血后、再灌注3个不同时间段的摄像,并比较分析,确定脊髓缺血完全,镜下摄像以鉴定模型成立。结果:20只大鼠均进入结果分析。从大鼠血管铸型结果看出,脊髓血供来自腰动脉,从右肾动脉上夹闭腹主动脉可以阻断2～5腰动脉,造成脊髓广泛缺血,为最佳夹闭部位;数字减影技术显示,取右肾动脉上夹闭腹主动脉制作的模型可以造成脊髓的完全缺血,鉴定该方法建立的模型成立。结论:取右肾动脉上夹闭腹主动脉为最佳部位复制缺血再灌注损伤模型的部位,该方法复制缺血再灌注模型操作简便、安全可靠。

关键词：脊髓缺血再灌注损伤应用解剖学数字减影血管造影

Towards a blank design method for manufacturing big-tapered profiled ring disk by spinning-rolling process

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Chinese Journal of Aeronautics 2025年第1期38卷 70-86页

作者： Xuechao li lianggang GUO Xiaoqing CHEN Heng li State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China School of Materials Science and Engineering Xinjiang UniversityUrumqi 830017China National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China CNPC Baoji Oilfield Machinery Co. LtdBaoji 721000China

The big-tapered profiled ring disk is a key component of engines for rockets and missiles.A new forming technology,as called spinning-rolling process,has been proposed previously for the high performance,high efficiency and low-cost manufacturing of the *** design is the key part of plastic forming process *** spinning-rolling process,the shape and size of the blank play a crucial role in process stability,deformation behavior and dimensional *** this work proposes a blank design method to determine the geometry structure and sizes of the *** mathematical model for calculating the blank size has been deduced based on volume conservation and neutral layer length invariance *** FE simulation and corresponding trial production of an actual big-tapered profiled ring disk show that the proposed blank design method is *** order to obtain a preferred blank,the influence rules of blank size determined by different deformation degrees(rolling ratio k)on the spinning-rolling process are revealed by comprehensive FE *** considering the process stability,circularity of the deformed ring disk and forming forces,a reasonable range of deformation degree(rolling ratio k)is recommended for the blank design of the new spinning-rolling process.

关键词： Blank design method Spinning-rolling process Big-tapered profiled ring disk Rolling ratio Intelligent FE simulation

Geometric-like imaginarity:Quantification and state conversion

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 13-22页

作者： Meng-li Guo Bo li Shao-Ming Fei School of Science East China University of TechnologyNanchang 330006China School of Computer and Computing Science Hangzhou City University Hangzhou 310015China School of Mathematical Sciences Capital Normal UniversityBeijing 100048China

From the perspective of resource-theoretic approach,this study explores the quantification of imaginary in quantum *** propose a well defined measure of imaginarity,the geometric-like measure of *** with the usual geometric imaginarity measure,this geometric-like measure of imaginarity exhibits smaller decay difference under quantum noisy channels and higher *** applications,we show that both the optimal probability of state transformations from a pure state to an arbitrary mixed state via real operations,and the maximal probability of stochastic-approximate state transformations from a pure state to an arbitrary mixed state via real operations with a given fidelity f,are given by the geometric-like measure of imaginarity.

关键词： quantum resource theory imaginarity geometric-like channels state transformations

Review on the abiotic degradation of biodegradable plastic poly(butylene adipate-terephthalate):Mechanisms and main factors of the degradation

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Chinese Chemical Letters 2025年第1期36卷 158-164页

作者： Haibo Ye Qianyu li Juan li Didi li Zhimin Ao Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health Guangzhou Key Laboratory Environmental Catalysis and Pollution ControlInstitute of Environmental Health and Pollution ControlGuangzhou 510006China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of EducationSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal UniversityZhuhai 519087China School of Environment Beijing Normal UniversityBeijing 100875China

Poly(butylene adipate-terephthalate)(PBAT),as one of the most common and promising biodegradable plastics,has been widely used in agriculture,packaging,and other industries due to its strong biodegradability *** is well known that PBAT suffers a series of natural weathering,mechanical wear,hydrolysis,photochemical transformation,and other abiotic degradation processes before being ***,it is particularly important to understand the role of abiotic degradation in the life cycle of *** the abiotic degradation of PBAT has not been systematically summarized,this review aims to summarize the mechanisms and main factors of the three major abiotic degradation pathways(hydrolysis,photochemical transformation,and thermochemical degradation)of *** was found that all of them preferentially destroy the chemical bonds with higher energy(especially C-O and C=O)of PBAT,which eventually leads to the shortening of the polymer chain and then leads to reduction in molecular *** main factors affecting these abiotic degradations are closely related to the energy or PBAT *** findings provide important theoretical and practical guidance for identifying effective methods for PBAT waste management and proposing advanced schemes to regulate the degradation rate of PBAT.

关键词： Biodegradable plastics PBAT Abiotic degradation Degradation mechanism

Computational Insights into the Interactions of Farnesoid X Receptor with Fargesone A,a Natural Product from Magnolia fargesii

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Chemical Research in Chinese Universities 2025年第1期41卷 146-154页

作者： ZHANG li CHEN Yaqiong li Weihua School of Pharmacy Shanghai Key Laboratory of Molecular ImagingShanghai University of Medicine and Health SciencesShanghai201318P.R.China School of Pharmacy East China University of Science and TechnologyShanghai200237P.R.China

Farnesoid X receptor(FXR)is a ligand-activated nuclear receptor and plays important roles in the regulation of metabolism and homeostasis of several important physiological substances,such as bile acids,glucose,and *** such,FXR has become a promising therapeutic target for the treatment of several metabolic diseases and liver ***,fargesone A(FA),a natural product from Magnolia fargesii was identified to be a novel,potent FXR agonist that demonstrated good in vitro and in vivo ***,the detailed interaction mechanism of FA with FXR remains *** this study,we employed multiple computational approaches including molecular docking,molecular dynamics simulation,and binding free energy calculation to address the *** comparisons of the structural dynamics and binding free energies,an optimal binding mode was identified,in which FA interacts with FXR via a direct hydrogen bond with His447 and hydrophobic interactions with multiple residues,such as Leu287,Met290,Met328,Ile352,and *** mutants,namely,H447F and L287N,were further constructed to validate the importance of the identified *** anticipate that these findings could be helpful for future rational design of new FA analogues targeting FXR.

关键词： Farnesoid X receptor(FXR) Binding mode Molecular docking Molecular dynamics Fargesone A

Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 67-74页

作者： Song He li li Sai Wang Shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin UniversityChangchun 130012China School of Physical Science and Technology Ningbo UniversityNingbo 315211China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences(UCAS)Hangzhou 310024China Theoretical Physics Division Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Physical Sciences University of Chinese Academy of Sciences(UCAS)Beijing 100049China Max Planck Institute for Gravitational Physics(Albert Einstein Institute) Am Muhlenberg 1Golm 14476Germany

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition,yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT)left *** specific baryon chemical poten-tial,the first-order QCD phase transition agrees with the observational constraint of baryon ***,therefore,provides a scenario for phase transition gravitational waves(GWs)within the standard model of particle *** these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA)observations,the duration of this FoPT can be well constrained,and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

Relative humidity-dependent evolution of molecular composition ofα-pinene secondary organic aerosol upon heterogeneous oxidation by hydroxyl radicals

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Journal of Environmental Sciences 2025年第2期148卷 210-220页

作者： Wei Wang Chenxi li Huayun Xiao Ziyue li Yue Zhao School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Heterogeneous oxidation by gas-phase oxidants is an important chemical transformation pathway of secondary organic aerosol(SOA)and plays an important role in controlling the abundance,properties,as well as climate and health impacts of ***,our knowledge on this heterogeneous chemistry remains *** this study,the heterogeneous oxidation ofα-pinene ozonolysis SOA by hydroxyl(OH)radicals was investigated under both low and high relative humidity(RH)conditions,with an emphasis on the evolution of molecular composition of SOA and its RH *** is found that the heterogeneous oxidation of SOA at an OH exposure level equivalent to 12 hr of atmospheric aging leads to particle mass loss of 60%at 25%RH and 95%at 90%*** heterogeneous oxidation strongly changes the molecular composition of *** dimer-to-monomer signal ratios increase dramatically with rising OH exposure,in particular under high RH conditions,suggesting that aerosol water stimulates the reaction of monomers with OH radicals more than that of *** addition,the typical SOA tracer compounds such as pinic acid,pinonic acid,hydroxy pinonic acid and dimer esters(e.g.,C17H26O8 and C19H28O7)have lifetimes of several hours against heterogeneous OH oxidation under typical atmospheric conditions,which highlights the need for the consideration of their heterogeneous loss in the estimation of monoterpene SOA concentrations using tracer-based *** study sheds lights on the heterogeneous oxidation chemistry ofmonoterpene SOA andwould help to understand their evolution and impacts in the atmosphere.

关键词： Secondary organic aerosol(SOA) Heterogeneous oxidation Chemical transformation Molecular composition Aerosol water