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Rare Metals 2022年第7期41卷 2491-2504页

作者： Yong-Fa Huang Rui Ding Dan-Feng Ying Yu-Xi Huang Tong Yan cai-ni tan Xiu-Juan Sun En-Hui Liu Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education College of ChemistryXiangtan UniversityXiangtan 411105China

An innovative K+vacant ternary perovskite fluoride(K_(0.89)ni_(0.02)Co_(0.03)Mn_(0.95)F_(3.0),KNCMF-3#)anode was designed for advanced Li-ion supercapattery(i.e.,Li-ion capacitors/batteries,LIC/Bs).Owing to the conversion/insertion dual mechanisms and fast pseudocapacitive con-trol dynamics,the KNCMF-3#electrode exhibits superior electrochemical performance,especially the excellent cycle performance(467%(229 mAh·g^(-1))/1000 cycles/2 A·g^(-1)).Moreover,the hybrid KNCMF-3#/reduced gra-phene oxide(rGO)electrode can further increase the electrochemical performance(217-97 mAh·g^(-1)/0.1-3.2 A·g^(-1),150%(197 mAh·g^(-1))/1000 cycles/2 A·g^(-1)).Also,a novel capacitor/battery cathode,activated carbon(AC)+LiFePO_(4)+graphene(AC+LFP+G),exhibits impres-sive performance(128-82 mAh·g^(-1)/0.1-3.2 A·g^(-1),84%/1000 cycles/2 A·g^(-1)).By the synergistic optimization of anode and cathode,the Li-ion supercapattery KNCMF-3#@rGO//AC+LFP+G demonstrates remarkable per-formance,for example,111.9-23.8 Wh·kg^(-1)/0.4-8.0 kW·kg^(-1)/82%/2000 cycles/5 A·g^(-1)/0-4 V,which is superior to KNCMF-3#//AC LICs,KNCMF-3#@rGO//AC LICs,KNCMF-3#//AC+LFP+G LIC/*** all,the novel Li-ion supercapattery idea adds a promising per-spective to develop advanced energy storage devices.

关键词： Perovskite fluoride Defect Anode Li-ion supercapattery Pseudocapacitive

Formation and evolution of supercritical geofluid

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Science China Earth Sciences 2025年第1期68卷 39-51页

作者： Huaiwei ni Yilin XIAO Xiaolin XIONG Xiandong LIU Chunxiao GAO Yi-Xiang CHEN Yunguo LI Wan-cai LI Xuan GUO Yang-Yang WANG Dong-Bo tan Li ZHANG State Key Laboratory of Lithospheric and Environmental Coevolution University of Science and Technology of ChinaHefei230026China Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of ChinaHefei230026China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou510640China School of Earth Sciences and Engineering Nanjing UniversityNanjing210023China State Key Lab of Superhard Materials Jilin UniversityChangchun130012China

In this work,we provide a comprehensive review on the formation,evolution,properties,and effects of supercritical *** Earth's interior,enhanced miscibility between H_(2)O and silicate by the addition of special components or by the increase of pressure and temperature gives rise to supercritical geofluid with a significant amount of both H_(2)O and silicate *** formation of supercritical geofluid in magmatic-hydrothermal systems,typified by pegmatite system,is governed by meltfluid critical *** formation of supercritical geofluid in metamorphic systems,typified by subducted slab,is governed by the second critical end *** results suggest that the presence of boron and fluorine in pegmatite system makes it possible to form supercritical geofluid at crustal depths,but the release of supercritical geofluid from subducted slab is withheld until almost 100 km depth.A major presence of both H_(2)O and depolymerized structural units(monomers,dimers,etc.)endows supercritical geofluid with unique physical properties including low density,low elastic moduli,low viscosity,high diffusivity,and high electrical *** geofluid can effectively mobilize a variety of elements even including high field strength elements and heavy rare earth *** chemical signatures of supercritical geofluid can be inherited by metasomatized mantle and mantle-derived melts,and this could give an explanation of the oxidation of arc *** separation of supercritical geofluid through the mechanism of spinodal decomposition leads to formation of a melt *** fluid inclusions recovered from subduction zone rocks and pegmatites are possible relics of supercritical *** geofluid can cause electrical anomaly and low seismic velocity near the top of subducted slab,and can be linked with intermediate-focus *** geofluid may have played a crucial role in the formation of pegmatites and associ

关键词： Supercritical geofluid Miscibility Subduction zone Pegmatite

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Reduced Salinity Interacts with Enriched nitrogen to Enhance the Photosynthetic Efficiency of Chlorophyta Ulva fasciata

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Journal of Ocean University of China 2025年第1期24卷 130-138页

作者： WAN Mingyue BAI Lingling ni Guangyan LI Li tan Yehui LI Gang Key Laboratory of Tropical Marine Bio-Resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510530China Daya Bay Marine Biology Research Station Chinese Academy of SciencesShenzhen 518121China University of Chinese Academy of Sciences Beijing 100049China School of Pharmaceutical Science Southern Medical UniversityGuangzhou 510515China Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China National Botanical GardenChinese Academy of SciencesGuangzhou 510650China

Macroalgae dominate nutrient dynamics and function as high-value foods for microbial,meio-and macrofaunal communities in coastal *** of this vital role,it is important to clarify the physiological information associated with environmental changes as it reflects their growth *** evaluate the effects of the changes in salinity and nutrients,the photosynthetic efficiency of a green macroalga Ulva fasciata from the Daya Bay was tested at a range of salinity(i.e.,31 to 10 psu)and nitrogen content(i.e.,5 to 60μmol L^(-1)).The results showed that cellular chlorophyll a(Chl a),carbohydrate and protein contents of *** were increased due to reduced salinity,and were decreased by interactive nitrogen *** a short culture period(i.e.,18 h),the reduced salinity decreased the maximum photosynthetic efficiency(rETRmax and Pmax)derived from the rapid light response curve and photosynthetic oxygen evolution rate versus irradiance curve,respectively,as well as the saturation irradiance(E_(K)).This reducing effect diminished with enlonged cultivation time and reversed to a stimulating effect after 24 h of *** nitrogen enrichment stimulated the rETRmax and Pmax,as well as the E_(K),regardless of salinity,especially within short-term cultivation period(i.e.,ning lowers the photosynthetic efficiency of *** in the short term,which is mitigated by nitrogen enrichment,but stimulates it in the long term,providing insight into how macroalgae thrive in coastal or estuarine waters where salinity and nutrients normally covary strongly.

关键词： reduced salinity nitrogen enrichment photosynthetic efficiency Ulva fasciata Daya Bay

A novel method for simultaneous measurement of^(222)Rn and^(220)Rn progeny concentrations measured by an alpha spectrometer

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Nuclear Science and Techniques 2025年第1期36卷 127-139页

作者： Zhong-Kai Fan Jia-Le Sun Hao-Xuan Li Xiang-Ming cai Hui Yang Shou-Kang Qiu Yan-Liang tan Jian Shan School of Nuclear Science and Technology University of South ChinaHengyang 421001China College of Physics and Electronic Engineering Hengyang Normal UniversityHengyang 421008China

The accumulation of^(222)Rn and^(220)Rn progeny in poorly ventilated environments poses the risk of natural radiation exposure to the public.A previous study indicated that satisfactory results in determining the^(222)Rn and^(220)Rn progeny concentrations by measuring the total alpha counts at five time intervals within 560 min should be expected only in the case of high progeny concentrations in *** complete the measurement within a relatively short period and adapt it for simultaneous measurements at comparatively lower^(222)Rn and^(220)Rn progeny concentrations,a novel mathematical model was proposed based on the radioactive decay *** model employs a nonlinear fitting method to distinguish nuclides with overlapping spectra by utilizing the alpha particle counts of non-overlapping spectra within consecutive measurement cycles to obtain the concentrations of^(222)Rn and^(220)Rn progeny in *** verification experiments were conducted using an alpha *** experimental results demonstrate that the concentrations of^(222)Rn and^(220)Rn progeny calculated by the new method align more closely with the actual circumstances than those calculated by the total count method,and their relative uncertainties are all within±16%.Furthermore,the measurement time was reduced to 90 min,representing an acceleration of 84%.The improved capability of the new method in distinguishing alpha particles with similar energies emitted from ^(218)Po and^(212)Bi,both approximately 6 MeV,contributed to realizing more accurate *** proposed method has the potential advantage of measuring relatively low concentrations of^(222)Rn and^(220)Rn progeny in air more quickly via air filtration.

关键词： ^(222)Rn ^(220)Rn Progeny concentration Nonlinear fitting method Alpha spectrometer

Apolipoprotein E elicits targetdirected miRNA degradation to maintain neuronal integrity

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Neural Regeneration Research 2025年第9期20卷 2577-2578页

作者： Jiazi tan Chin-Tong Ong Temasek Life Sciences Laboratory National University of SingaporeSingapore Department of Biological Sciences National University of SingaporeSingapore

Apolipoprotein E has diverse functions in neurons:Apolipoprotein E(ApoE)is a glycoprotein that primarily regulates lipid metabolism and transport in the central nervous *** are three predominant human ApoE protein isoforms with cysteine and arginine substitutions at amino acid positions 112 and 158 that impact their lipidation and related functions(Flowers and Rebeck,2020).ApoE2 is characterized by Cys112 and Cys158,ApoE3 by Cys112 and Arg158,whereas ApoE4 contains Arg112 and Arg158.

关键词： metabolism glycoprotein maintain

Growth of CeCo-MOF in dendritic mesoporous organosilica as highly efficient antioxidant for enhanced thermal stability of silicone rubber

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Chinese Chemical Letters 2025年第1期36卷 381-386页

作者： Guizhi Zhu Junrui tan Longfei tan Qiong Wu Xiangling Ren Changhui Fu Zhihui Chen Xianwei Meng State Key Laboratory of Cryogenic Science and Technology Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Materials Science and Engineering Changzhou UniversityChangzhou 213164China

High-efficient rubber antioxidants for enhanced heat resistance without compromising mechanical properties remain an enormous and long-term challenge for the rubber ***,we employed the in-situ growth of Ce-doped Co-metal-organic framework(Ce Co-MOF)in dendritic mesoporous organosilica nanoparticles(DMONs@Ce Co-MOF,denoted as DCCM)to prepare a novel antioxidant that exhibit outstanding thermal *** mesoporous organosilica nanoparticles(DMONs)effectively alleviated the incompatibility of Ce Co-MOF in the polymer matrix,and the effective scavenging of free radicals was attributed to the various oxidation states of metal ions in Ce ***,by adding only0.5 phr(parts per hundred of rubber)of DMONs@Ce Co-MOF to silicone rubber,(SR),the retention rate of tensile strength increased from 37.3%to 61.6%after aging 72 h at 250℃,and the retention rate of elongation at break of DCCM/SR1 composites reached 68%,which was 5.43 times of *** strategy of anchoring MOFs on the surface of silica also provides a viable method for preparing effective compound functionalized rubber antioxidant.

关键词： Mesoporous organosilica nanoparticles Silicone rubber Metal-organic framework Antioxidants Thermal stability Thermal oxidative degradation

Copper-catalyzed C–H bond functionalization enabled by programmed alternating current

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Science China Chemistry 2025年第1期68卷 10-11页

作者： Zhoumei tan Kun Xu Chengchu Zeng Beijing Key Laboratory of Environmental and Viral Oncology College of Chemistry and Life ScienceBeijing University of TechnologyBeijing 100124China

Synthetic electrochemistry has been selected as one of the Top Ten Emerging Technologies in Chemistry in 2023 by International Union of Pure and Applied Chemistry(IUPAC)^([1]).It has emerged as a sustainable platform for organic synthesis and has exhibited a wide range of applications from academia to industry^([2]).However,electrosynthesis has been predominantly performed by using direct current(DC).

关键词： catalyzed Copper IUPAC

Aerodynamic Optimization and Flow Mechanism for a Compressor Cascade at Low Reynolds Number

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Journal of Thermal Science 2025年第1期34卷 92-109页

作者： LI Lin ZHANG Jianshe CHEN caiyan tan Wei ZHANG Yanfeng Key Laboratory of Light-Duty Gas-Turbine Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China National Key Laboratory of Science and Technology on Advanced Light-duty Gas-turbine Beijing 100190China

Low-Reynolds-number effect is an important factor affecting the performance of compressors and other main components of high-altitude long-endurance unmanned aerial *** improve the flow condition and reduce flow loss under the condition of high altitude and low Reynolds number(Re),this paper proposes an optimization process based on a surrogate model,which combines the class-shape transformation method(CST),the Latin hypercube sampling(LHS)method,the light gradient-boosting machine algorithm(LightGBM),and a genetic algorithm(GA)to optimize a high-subsonic compressor *** surrogate model is verified to be accurate and can be used in the optimization *** accuracy of the GA is higher than the other algorithms under common test *** optimization results are verified by numerical simulation,and the flow differences before and after optimization are compared,especially the flow within the boundary *** changing the blade shape,the optimization process adjusts the loading distribution to delay the transition of the optimized blade on the suction surface,which changes the turbulent reattachment in the laminar separation bubble(LSB)into laminar ***,the mixing loss induced by the turbulent reattachment of the LSB and the wake loss of turbulent separation at the trailing edge are significantly reduced,and the performance of the compressor profile is finally *** addition,turbulent separation of the optimized profile is delayed reducing the range of the wake region on the suction *** this optimization process,the reduction of total pressure loss coefficient at Re of 2.5×10^(5),3.5×10^(5),and 4.5×10^(5) are 16.32%,20.76%,and 22.16%,respectively.

关键词： low Reynolds numbers compressor optimization boundary layer transition

Interpreting hourly mass concentrations of PM_(2.5)chemical components with an optimal deep-learning model

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Journal of Environmental Sciences 2025年第5期151卷 125-139页

作者： Hongyi Li Ting Yang Yiming Du Yining tan Zifa Wang State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry(LAPC) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Shenyang Environmental Monitoring Center Shenyang 110167China

PM_(2.5)constitutes a complex and diversemixture that significantly impacts the environment,human health,and climate ***,existing observation and numerical simulation techniques have limitations,such as a lack of data,high acquisition costs,andmultiple *** limitations hinder the acquisition of comprehensive information on PM_(2.5)chemical composition and effectively implement refined air pollution protection and control *** this study,we developed an optimal deep learning model to acquire hourly mass concentrations of key PM_(2.5)chemical components without complex chemical *** model was trained using a randomly partitioned multivariate dataset arranged in chronological order,including atmospheric state indicators,which previous studies did not *** results showed that the correlation coefficients of key chemical components were no less than 0.96,and the root mean square errors ranged from 0.20 to 2.11μg/m^(3)for the entire process(training and testing combined).The model accurately captured the temporal characteristics of key chemical components,outperforming typical machine-learning models,previous studies,and global reanalysis datasets(such asModern-Era Retrospective analysis for Research and Applications,Version 2(MERRA-2)and Copernicus Atmosphere Monitoring Service ReAnalysis(CAMSRA)).We also quantified the feature importance using the random forest model,which showed that PM_(2.5),PM_(1),visibility,and temperature were the most influential variables for key chemical *** conclusion,this study presents a practical approach to accurately obtain chemical composition information that can contribute to filling missing data,improved air pollution monitoring and source *** approach has the potential to enhance air pollution control strategies and promote public health and environmental sustainability.

关键词： Pm2.5 chemical composition Hourly mass concentration Deep learning Bayesian optimization Feature importance

Force and impulse multi-sensor based on flexible gate dielectric field effect transistor

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 214-220页

作者： Chao tan Junling Lü Chunchi Zhang Dong Liang Lei Yang Zegao Wang College of Materials Science and Engineering Sichuan UniversityChengdu 610065China The 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050081China

Nowadays,force sensors play an important role in industrial production,electronic information,medical health,and many other ***-dimensional material-based filed effect transistor(2D-FET)sensors are competitive with nano-level size,lower power consumption,and accurate ***,few of them has the capability of impulse detection which is a path function,expressing the cumulative effect of the force on the particle over a period of *** we fabricated the flexible polymethyl methacrylate(PMMA)gate dielectric MoS_(2)-FET for force and impulse sensor *** systematically investigated the responses of the sensor to constant force and varying forces,and achieved the conversion factors of the drain current signals(I_(ds))to the detected impulse(I).The applied force was detected and recorded by I_(ds)with a low power consumption of~30 *** sensitivity of the device can reach~8000%and the 4×1 sensor array is able to detect and locate the normal force applied on ***,there was almost no performance loss for the device as left in the air for two months.

关键词： flexible gate dielectric transistor force sensor impulse sensor force sensor array