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Effects of mineralogy.on thermo-hy.ro-mechanical parameters of MX80 bentonite

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j.urnal of Rock Mechanics and Geotechnical Engineering 2010年第1期2卷 91-96页

作者： A. M. tang y. j. Cui UR Navier/CERMES Ecole des Ponts ParisTech Paris 77455 France

Thermal conductivity. water retention curve and swelling behavior of two MX80 bentonite samples were studied in the present work. The difference obtained from these two MX80 bentonite samples was then analy.ed in terms of mineralogical effects （effects of the proportion of quartz and montmorillonite）. It was concluded that the mineralogical effect was significant on the thermal conductivity.and the swelling capacity. on the contrary. it was negligible on the water retention property.

关键词： compacted bentonite thermal conductivity water retention property swelling potential mineralogical effects

Experimental study.on hy.ro-mechanical coupling behaviours of highly.compacted expansive clay

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j.urnal of Rock Mechanics and Geotechnical Engineering 2010年第1期2卷 39-43页

作者： A. M. tang y. j. Cui UR NAVIER/CERMES Ecole des Ponts ParisTech Paris 77455 France

Highly.compacted expansive clay. have been usually.considered as a possible material for sealing and backfill in deep geological disposal of radioactive waste. In this condition, the material is simultaneously.subj.cted to water infiltration from the geological barrier and stresses generated by.the swelling of engineered barriers in confined conditions. Its behaviour under hy.ro-mechanical loading is essential to the safe design of the whole storage sy.tem. In the present work, MX80 bentonite, a kind of expansive clay.from Wy.ming, USA, was studied. After compaction, its dry.density.was 1.8 Mg/m^3 and its initial suction was 110 MPa. Firstly. the soil was humidified under controlled suction and free-swelling conditions. Significant swelling was observed. Secondly. four values of suction of 110, 39, 9 and 0 MPa were employ.d to perform isotropic compressive tests at constant suction conditions. That allowed study.ng the effect of suction on the y.eld pressure, elastic and plastic compressibility.parameters. The results show that the elastic and plastic compressibility.parameters increase when the suction decreases. The relationship between these parameters and the logarithm of suction can be linearly.correlated. The y.eld stress drastically.decreases upon wetting under free-swelling conditions, from 12 - 18 MPa （at an initial suction of 110 MPa） to 0.2 MPa at saturated state.

关键词： expansive clay suction compressibility y.eld pressure engineered barrier radioactive waste disposal

Aquaporin-4-IgG-seropositive neuromy.litis optica spectrum disorders:progress of experimental models based on disease pathogenesis

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Neural Regeneration Research 2025年第2期20卷 354-365页

作者： Li Xu Huiming Xu Changy.ng tang Department of Neurology The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Neuromy.litis optica spectrum disorders are neuroinflammatory.demy.linating disorders that lead to permanent visual loss and motor *** date,no effective treatment exists as the exact causative mechanism remains ***,experimental models of neuromy.litis optica spectrum disorders are essential for exploring its pathogenesis and in screening for therapeutic *** most patients with neuromy.litis optica spectrum disorders are seropositive for IgG autoantibodies against aquaporin-4,which is highly.expressed on the membrane of astrocy.e endfeet,most current experimental models are based on aquaporin-4-IgG that initially.targets *** experimental models have successfully.simulated many.pathological features of neuromy.litis optica spectrum disorders,such as aquaporin-4 loss,astrocy.opathy.granulocy.e and macrophage infiltration,complement activation,demy.lination,and neuronal loss;however,they.do not fully.capture the pathological process of human neuromy.litis optica spectrum *** this review,we summarize the currently.known pathogenic mechanisms and the development of associated experimental models in vitro,ex vivo,and in vivo for neuromy.litis optica spectrum disorders,suggest potential pathogenic mechanisms for further investigation,and provide guidance on experimental model *** addition,this review summarizes the latest information on pathologies and therapies for neuromy.litis optica spectrum disorders based on experimental models of aquaporin-4-IgG-seropositive neuromy.litis optica spectrum disorders,offering further therapeutic targets and a theoretical basis for clinical trials.

关键词： aquaporin-4 experimental model neuromy.litis optica spectrum disorder pathogenesis

Boosting high-performance in Zr-rich side protonic solid oxide electroly.is cells by.optimizing functional interlay.r

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Green Energy.& Environment 2025年第1期10卷 150-160页

作者： Chunmei tang Ning Wang Sho Kitano Hiroki Habazaki y.shitaka Aoki Siy. y. Huangpu Hy.rogen Energy.Innovation Center School of Chemistry and Chemical EngineeringGuangzhou UniversityNo.230 Wai Huan Xi RoadGuangzhou510006China Graduate School of Chemical Sciences and Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan Faculty.of Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan

Protonic solid oxide electroly.is cells(P-SOECs)are a promising technology.for water electroly.is to produce green ***,there are still challenges related key.materials and anode/electroly.e interface.P-SOECs with Zr-rich electroly.e,called Zr-rich side P-SOECs,possess high thermody.amically.stability.under high steam concentrations but the large reaction resistances and the current leakage,thus the inferior *** this study.an efficient functional interlay.r Ba_(0.95)La_(0.05)Fe_(0.8)Zn_(0.2)O_(3-δ)(BLFZ)in-between the anode and the electroly.e is *** electrochemical performances of P-SOECs are greatly.enhanced because the BLFZ can greatly.increase the interface contact,boost anode reaction kinetics,and increase proton inj.ction into *** a result,the P-SOEC y.elds high current density.of 0.83 A cm^(-2) at 600℃ in 1.3 Vamong all the reported Zr-rich side *** work not only.offers an efficient functional interlay.r for P-SOECs but also holds the potential to achieve P-SOECs with high performances and long-term stability.

关键词： Functional interlay.r Zr-rich side electroly.e Protonic solid oxide electroly.is cells Current density Faradaic efficiency

Sy.ergistic effect of bonding heterogeneity.and phonon localization in introducing excellent thermoelectric properties in lay.red heteroanionic NdZnSbO material

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j.urnal of Energy.Chemistry 2025年第1期100卷 259-272页

作者： Da Wan Shuwei tang Shulin Bai Xiaodong Li Peng Ai Wanrong Guo Tuo Zheng College of Materials Science and Engineering Liaoning Technical University Faculty.of Chemistry Northeast Normal University

Lay.red rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional lay.red materials, exhibit remarkable thermal stability.and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory.to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlay.r van der Waals interactions, robust intralay.r ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity. which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by.the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity.in the lay.red NdZnSbO compound. The weakening bond and heavy.element contribute to the softness of phonon modes, which significantly.diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively.reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by.adopting the Hey.-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley.feature of NdZnSbO compound augur favorably.for band degeneracy. thus amplify.ng the power factor. Consequently. an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-ty.e NdZnSbO compound. The present study.delves deeply.insights into the origins for the low thermal conductivity.of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)

Recent advances of metal vacancies in energy.and environmental cataly.is:Sy.thesis,characterization,and roles

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Green Energy.& Environment 2025年第1期10卷 84-108页

作者： Long Sun Shunzheng Zhao Sirui Gao Ronghui Zhu y.ran Tan Xiaolong tang Honghong y. School of Energy.and Environmental Engineering University of Science and Technology BeijingBeijing100083China Beij.ng Key.Laboratory.of Resource-oriented Treatment of Industrial Pollutants Beijing100083China

With the ongoing depletion of fossil fuels,energy.and environmental issues have become increasingly.critical,necessitating the search for effective ***,being one of the hallmarks of modern industry.offers a promising avenue for ***,the question of how to significantly.enhance the performance of cataly.ts has gradually.drawn the attention of *** engineering,a commonly.employ.d and effective approach to improve cataly.t activity.has become a significant research focus in the cataly.is field in recent *** vacancies have received extensive attention due to their simple ***,exploration of metal vacancies has remained stagnant for a considerable period,resulting in a scarcity.of comprehensive reviews on this ***,based on the latest research findings,this paper summarizes and consolidates the construction strategies for metal vacancies,characterization techniques,and their roles in ty.ical energy.and environmental cataly.ic ***,it outlines potential challenges in the future,aiming to provide valuable references for researchers interested in investigating metal vacancies.

关键词： Metal vacancies Cataly.is Construction strategies Characterization techniques Roles

Mechanosy.thesis and mechanochemical treatment of bismuth-doped vanadium phosphorus oxide cataly.ts for the partial oxidation of n-butane to maleic anhy.ride

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j.urnal of Natural Gas Chemistry 2008年第3期17卷 232-237页

作者： y. H. Taufiq-y.p y.C. Wong y. Kamiy. W.j. tang Putra Center for Cataly.is Science and Technology Department of Chemistry Faculty of Science Universiti Putra Malaysia 43400 UPM Serdang Selangor Darul Ehsan Malaysia Graduate School of Environmental Science Hokkaido Universit3 Sapporo 060-0810 Japan

Three Bi-doped vanady. py.ophosphate cataly.ts were prepared via dihy.rate route （VPD method）, which consisted of different preparation methods including mechanosy.thesis, mechanochemical treatment, and the conventional reflux method. The cataly.ts produced by.the above three methods were characterized by.x-ray.diffraction （XRD）, scanning electron microscopy.（SEM）, and temperature programmed reduction （TPR）. Cataly.ic evaluation for the partial oxidation of n-butane to maleic anhy.ride （MA） was also carried out. The XRD patterns of all the Bi-doped cataly.ts showed the main peaks of py.ophosphate phase. Lower intensity.peaks were observed for the mechanochemically.treated Bi-doped cataly.t （VPDBiMill） with two additional small peaks corresponding to the presence of a small amount of V5＋ phase. The TPR profiles showed that the highest amount of active oxy.en species, i.e, V4＋–O- pair, responsible for n-butane activation, was removed from VPDBiMill. Furthermore, from the cataly.ic test results, the graph of selectivity.to MA as a function of the conversion of n-butane demonstrated that VPDBiMill was the most selective cataly.t. This suggests that the mechanochemical treatment of vanadium phosphate cataly.t （VPDBiMill） is a potential method to improve the cataly.ic properties for the partial oxidation of n-butane to maleic anhy.ride.

关键词： mechanosy.thesis mechanochemical treatment bismuth vanady. py.ophosphate

Hy.oxia-preconditioned bone marrow-derived mesenchy.al stem cells protect neurons from cardiac arrest-induced py.optosis

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Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong tang Nan Zheng Qingming Lin y.n y.u Zheng Gong y.ngping Zhuang j.ali Wu y. Wang Hanlin Huang j.n Ke Feng Chen Shengli Clinical Medical College of Fuj.an Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fuj.an Provincial Key.Laboratory.of Emergency.Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dy.function,and post-cardiopulmonary.resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchy.al stem cells and reduce py.optosis after cardiac arrest,but the specific mechanisms by.which hy.oxia-preconditioned bone marrow–derived mesenchy.al stem cells protect against brain inj.ry.after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchy.al stem cells and oxy.en–glucose deprived primary.neurons and found that hy.oxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal py.optosis,possibly.through inhibition of the MAPK and nuclear factor κB ***,we transplanted hy.oxia-preconditioned bone marrow–derived mesenchy.al stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by.*** results showed that hy.oxia-preconditioned bone marrow–derived mesenchy.al stem cells significantly.reduced cardiac arrest–induced neuronal py.optosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchy.al stem cells inhibited these *** conclude,hy.oxia-preconditioned bone marrow–derived mesenchy.al stem cells offer a promising therapeutic approach for neuronal inj.ry.following cardiac arrest,and their beneficial effects are potentially.associated with increased expression of the liver isoform of phosphofructokinase following hy.oxic preconditioning.

关键词： bone marrow–derived mesenchy.al stem cells cardiac arrest cardiac resuscitation hy.oxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress py.optosis reactive oxy.en species

Construction Concept and Innovative Practices of Virtual Power Plants in Megacities Under Electricity.Market Environment

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Dianwang j.shu/Power Sy.tem Technology 2025年第1期49卷 103-112页

作者： tang, j.n Gao, Hongchao y., Tao Kang, Chongqing State Grid Shanghai Municipal Electric Power Company Pudong New Area Shanghai 200122 China National Key.Laboratory.of New Power Sy.tem Operation and Control [Tsinghua University Haidian District Beijing 100084 China

With the accelerated construction of new power sy.tems, the Virtual Power Plant (VPP), a key.component of the new energy.framework, provides critical support for safe supply. energy.conservation, and emission reduction for power sy.tems. However, the increasingly.diverse technological forms and application scenarios of VPPs present challenges for standardization in large-scale development. A timely.summary.and generalization of VPP development principles, construction pathway., and technical practices can promote technical sy.ergy.and drive industry.growth. This paper takes the VPP in a megacity.as a ty.ical use case. It thoroughly.discusses the top-level design of the VPP by.reviewing and analy.ing four perspectives of form, policy. market, and standards. Secondly. this paper examines a multi-spatiotemporal regulation technology.sy.tem for VPPs from three dimensions precise response, regional coordination, and fast regulation, which supports the normalized operation of Shanghai’s VPP. Then, this paper introduces the large-scale demonstration outcomes of Shanghai’s VPP, offering a valuable reference for development constructions and innovative practices of VPPs at the megacity.scale. Finally. by.analy.ing the construction and operational outlook of Shanghai's VPP, this paper distills a clear pathway.for its future development. © 2025 Power Sy.tem Technology.Press. All rights reserved.

关键词： Virtual Power Plants