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SYNTheSIS　OF　LINEAR　CONJUGATED　POLYBENZONITRILE　WITH　ULTRAFAST　OPTICAL　KERR　EFFECT

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Chinese Chemical Letters 1996年第1期7卷 71-72页

作者： Zhao, XY Xu, Q he, yk Chen, HY Qiang, D Wang, CF Ai, XC Xia, ZJ Zou, YH BEIJING UNIV DEPT CHEMDIV POLYMERBEIJING 100871PEOPLES R CHINA BEIJING UNIV INST PHYS CHEMBEIJING 100871PEOPLES R CHINA BEIJING UNIV DEPT PHYSMESOSCOP PHYS LABBEIJING 100871PEOPLES R CHINA

Linear polybenzonitrile with carbon-nitrogen conjugated backbones was prepared by plasma polyemrization techniques The 'ultrafast Kerr effect of polymer in DMF solution was examined with femtosecond laser pulses Sec...

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Recent progress in constructing fluorinated solid-electrolyte interphases for stable lithium metal anodes

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 270-291页

作者： Di Zhang Pengfei Lv Wei Qin Xin he Yuanhua he Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307China School of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium metal batteries(LMBs)are emerging as a promising energy storage solution owing to their high energy density and specific ***,the non-uniform plating of lithium and the potential rupture of the solid-electrolyte interphase(SEI)during extended cycling use may result in dendrite growth,which can penetrate the separator and pose significant short-circuit *** a stable SEI is essential for the long-term operation of the ***-rich SEI has garnered significant attention for its ability to effectively passivate electrodes,regulate lithium deposition,and inhibit electrolyte *** the structural components and preparation methods of existing fluorinated SEI is crucial for optimizing lithium metal anode *** paper reviews the research on optimizing LiF passivation interfaces to protect lithium metal *** focuses on four types of compositions in fluorinated SEI that work synergistically to enhance SEI *** instance,combining compounds with LiF can further enhance the mechanical strength and ionic conductivity of the *** metals with LiF significantly improves electrochemical performance at the SEI/anode interface,with a necessary focus on reducing electron tunneling ***,incorporating polymers with LiF offers balanced improvements in interfacial toughness and ionic conductivity,though maintaining structural stability over long cycles remains a critical area for future *** alloys combined with LiF increase surface energy and lithium affinity,challenges such as dendrite growth and volume expansion *** summary,this paper emphasizes the crucial role of interfacial structures in LMBs and offers comprehensive guidance for future design and development efforts in battery technology.

关键词： LiF lithium metal anodes solid-electrolyte interphase interface cycling stability

Evaluation of ERA5 reanalysis temperature data over the Qilian Mountains of China

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Journal of Mountain Science 2025年第1期22卷 198-209页

作者： ZHAO Peng he Zhibin School of Computer Science Huainan Normal UniversityHuainan 232038China Linze Inland River Basin Research Station Key Laboratory of Inland River Basin ScienceNorthwest Institute of Eco-Environment and ResourceChinese Academy of SciencesLanzhou 730000China

Air temperature is an important indicator to analyze climate change in mountainous ***5 reanalysis air temperature data are important products that were widely used to analyze temperature change in mountainous ***,the reliability of ERA5 reanalysis air temperature over the Qilian Mountains(QLM)is *** this study,we evaluated the reliability of ERA5 monthly averaged reanalysis 2 m air temperature data using the observations at 17 meteorological stations in the QLM from 1979 to *** results showed that:ERA5 reanalysis monthly averaged air temperature data have a good applicability in the QLM in general(R2=0.99).ERA5 reanalysis temperature data overestimated the observed temperature in the QLM in *** mean square error(RMSE)increases with the increasing of elevation range,showing that the reliability of ERA5 reanalysis temperature data is worse in higher elevation than that in lower ***5 reanalysis temperature can capture observational warming rates *** the smallest warming rates of observational temperature and ERA5 reanalysis temperature are found in winter,with the warming rates of 0.393°C/10a and 0.360°C/10a,*** study will provide a reference for the application of ERA5 reanalysis monthly averaged air temperature data at different elevation ranges in the Qilian Mountains.

关键词： ERA5 Reanalysis data Air temperature Qilian Mountains Climate change

The P_(5)-saturation Game

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Acta Mathematicae Applicatae Sinica 2025年第1期41卷 295-304页

作者： Zhen he Mei LU School of Mathematics and Statistics Beijing Jiaotong UniversityBeijing 100044China Department of Mathematical Sciences Tsinghua UniversityBeijing 100084China

Let F,G and H be three graphs with G■*** call G an F-saturated graph relative to H,if there is no copy of F in G but there is a copy of F in G+e for any e∈E(H)\E(G).The F-saturation game on host graph H consists of two players,named Max and Min,who alternately add edges of H to G such that each chosen edge avoids creating a copy of F in G,and the players continue to choose edges until G becomes F-saturated relative to *** wishes to maximize the length of the game,while Min wishes to minimize the *** sat_(g)(F,H)(***_(g)'(F,H))denote the number of edges chosen when Max(*** Min)starts the game and both players play *** this article,we show that sat_(g)(P_(5),K_(n))=sat_(g)'(P_(5),K_(n))=n+2 for n≥15,and satg(P_(5),K_(m,n)),sat_(g)'(P_(5),K_(m,n))lie in{m+n-[m+2/4];m+n-[m-3/4]}if n≥5/2m and m≥4,respectively.

关键词： saturation number saturation game host graph

Fluorine-functionalized zirconium-organic cages for efficient photocatalytic oxidation of thioanisole

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Chinese Chemical Letters 2025年第1期36卷 632-636页

作者： Jia-Ru Li Ning Li Li-Ling he Jun he School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China School of Chemistry South China Normal UniversityGuangzhou 510006China

Zirconium-based metal-organic cages(Zr-MOCs)typically exhibit high stability,but their structural and application reports are scarce due to stringent crystallization *** have successfully fluorinated the classical Zr-MOCs(ZrT-3)for the first time,obtaining the fluorinated MOCs(ZrT-3-F).Notably,ZrT-3-F not only inherits the high stability of its parent structure,but also acts as a catalyst for the effective oxidation of benzyl thioether for the first *** reaction can reach a conversion rate of 99%in 6 h,and the selectivity reaches 95%,which far exceeds the non-fluorinated *** work proves that the specific functionalization of the classical Zr-MOCs can further expand their application potential,such as catalysis.

关键词： Ultraviolet light Fluorine Zirconium-based metal-organic cages Sulfide oxidation Multiphase photocatalysis

Reconstructing forest and grassland cover changes in China over the past millennium

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Science China Earth Sciences 2025年第1期68卷 94-110页

作者： Fanneng he Fan YANG Yafei WANG Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing100101China Key Research Institute of Yellow River Civilization and Sustainable Development Henan UniversityKaifeng475001China University of Chinese Academy of Sciences Beijing100049China

Historical forest and grassland cover changes not only are critical indicators for quantifying ecological and environmental change processes but also serve as fundamental data for long-term climate change simulations and terrestrial ecosystem carbon emission ***,because of limitations in historical data,quantitative estimations and spatially gridded reconstructions of these changes remain challenging,necessitating further methodological *** study focused on China's present-day land area over the past millennium,objectively capturing the characteristics and drivers of forest and grassland cover *** this basis,using the forest transition theory and the space-for-time substitution method,we depicted the historical deforestation process as an inverted“S”curve and developed a model to reconstruct historical forest area changes based on the functional relationship between the forest area and population size ***,a gridded forest allocation model was established on the basis of deforestation *** the grassland cover,we implemented regionspecific methods,such as the cropland area deduction method and the habitat constraint method,to quantitatively reconstruct historical ***,we obtained provincial forest and grassland area changes over the past millennium and mapped 10-km-resolution gridded data of forest and grassland *** results indicated the following.(1)The methods developed using population data as a proxy objectively reproduced the spatiotemporal evolution of forest and grassland cover in China over the past *** feasible methods offer a novel pathway for the quantitative reconstruction of historical forest and grassland cover changes.(2)The data indicated that China's forest area generally decreased over the past millennium,characterized by a“decrease-then-increase”*** forest area experienced three distinct phases:a slow decline(AD 1000–1650),a rapid decline(AD 16

关键词： Land use and land cover change Forest Grassland Quantitative reconstruction Gridded reconstruction China historical period

Breaking new ground in photocatalysis:lutetium texaphyrin as a trigger for pyroptosis through biomolecular photoredox reactions

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Science China Chemistry 2025年第1期68卷 1-2页

作者： Qihang Ding Mengrong he Meijia Gu Department of Chemistry Korea UniversitySeoul 02841Republic of Korea Department of Ultrasound Medicine Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Key Laboratory of Combinatorial Biosynthesis and Drug Discovery(MOE) School of Pharmaceutical SciencesWuhan UniversityWuhan 430071China

Malignant neoplasms consistently pose a significant threat to global public health^([1,2]).In recent years,immunotherapy has demonstrated remarkable clinical success;however,its efficacy is limited by the scarcity of immune cell infiltration within tumor *** pyroptosis,a gasdermin-mediated process characterized by cellular swelling,rupture,and the release of intracellular contents such as IL-1β,IL-18,ATP,HMGB1,plays a crucial role in this context^([3,4]).

关键词： neoplasms clinical rupture

Advancements in implantable temperature sensors:Materials,mechanisms,and biological applications

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Journal of Semiconductors 2025年第1期46卷 166-177页

作者： Zhuofan Yang Hongcheng Song he Ding Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Department of Urology Beijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing 100045China

Implantable temperature sensors are revolutionizing physiological monitoring and playing a crucial role in diagnostics,therapeutics,and life sciences *** review classifies the materials used in these sensors into three categories:metal-based,inorganic semiconductor,and organic semiconductor ***-based materials are widely used in medical and industrial applications due to their linearity,stability,and *** semiconductors provide rapid response times and high miniaturization potential,making them promising for biomedical and environmental *** semiconductors offer high sensitivity and ease of processing,enabling the development of flexible and stretchable *** review analyzes recent studies for each material type,covering design principles,performance characteristics,and applications,highlighting key advantages and challenges regarding miniaturization,sensitivity,response time,and ***,critical performance parameters of implantable temperature sensors based on different material types are summarized,providing valuable references for future sensor design and *** future development of implantable temperature sensors is discussed,focusing on improving biocompatibility,long-term stability,and multifunctional *** advancements are expected to expand the application potential of implantable sensors in telemedicine and dynamic physiological monitoring.

关键词： implantable temperature sensors biological applications flexible electronics

Effect of gradual increase of salt on performance and microbial community during granulation process

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Journal of Environmental Sciences 2025年第1期147卷 404-413页

作者： Mengfei Wang Junguo he Xiangke Dong Ruimiao Zhang School of Environment Harbin Institute of TechnologyHarbin 150090China State Key Laboratory of Urban Water Resources and Environment Harbin Institute of TechnologyHarbin 150090China School of Civil Engineering Guangzhou UniversityGuangzhou 510006China National Marine Environmental Monitoring Center Dalian 116023China

Salinity was considered to have effects on the characteristics,performance microbial communities of aerobic granular *** study investigated granulation process with gradual increase of salt under different *** identical sequencing batch reactors were operated,while the influent of Ra and Rb was subjected to stepwise increments of NaCl concentrations(0-4 g/L and 0-10 g/L).The presence of filamentous bacteria may contribute to granules formed under lower salinity conditions,potentially leading to granules *** removal efficiency achieved in both reactors although therewas a small accumulation of nitrite in Rb at later *** removal efficiencies of chemical oxygen demand(COD),total nitrogen(TN),and total phosphorus(TP)in Ra were 95.31%,93.70%and 88.66%,while the corresponding removal efficiencies in Rb were 94.19%,89.79%and 80.74%.Salinity stimulated extracellular polymeric substances(EPS)secretion and enriched EPS producing bacteria to help maintain the integrity and stability of the aerobic *** nitrifying bacteria were responsible for NH_(4)^(+)-N and NO_(2)^(-)-N oxidation of salinity systems and large number of denitrifying bacteria were detected,which ensure the high removal efficiency of TN in the systems.

关键词： Aerobic granular sludge(AGS)Salinity Nutrient removal Extracellular polymeric substances(EPS) Microbial community