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Insight into stable,concentrated radicals from sulfur-functionalized alkyne-rich crystalline frameworks and application in solar-to-vapor conversion

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Chinese Journal of Structural Chemistry 2024年第8期43卷 65-72页

作者： Jian-Rong Li Jieying Hu Lai-Hon Chung Jilong zhou Parijat Borah Zhiqing Lin Yuan-Hui Zhong hua-qun zhou Xianghua Yang Zhengtao Xu Jun He School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou510006China Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center Jieyang515200China Institute of Materials Research and Engineering(IMRE) Agency for ScienceTechnology and Research(A^(*)STAR)2 Fusionopolis WaySingapore138634Republic of Singapore

Organic radicals feature versatile unpaired electrons key for photoelectronic and biomedical applications but remain difficult to access in stable concentrated *** disclose easy generation of stable,concentrated radicals from various alkynyl phenyl motifs,including 1)sulfur-functionalized alkyne-rich organic linkers in crystalline frameworks;2)the powders of these molecules alone;3)simple *** Zr-based framework,the generation of radical-rich crystalline framework was achieved by thermal annealing in the range of 300-450℃.For terminal alkynes,electron paramagnetic resonance signals(EPR,indicative of free radicals)arise after air exposure or mild heating(e.g,70℃).Further heating(e.g.,150℃for 3 h)raises the radical concentrations up to 3.30 mol kg^(-1).For more stable internal alkynes,transformations into porous radical solids can also be triggered,albeit at higher temperatures(e.g.,250-500℃).The resulted radical-containing solids are porous,stable to air as well as heat(up to 300-450℃)and exhibit photothermal conversion and solar-driven water evaporation *** formation of radicals can be ascribed to extensive alkyne cycliza-tions,forming defects,dangling bonds and the associated radicals stabilized by polycyclicπ-systems.

关键词： Porous coordination polymers Persistent radicals Nanographene Photothermal conversion Solar-to-vapor conversion

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Deformable Perfect Vortex Wave-Front Modulation Based on Geometric Metasurface in Microwave Regime

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Chinese Journal of Electronics 2025年第1期34卷 64-72页

作者： Yueyi Yuan Wenjie zhou Mengnuo Fan qun Wu Kuang Zhang Harbin Institute of Technology

Perfect vortex(PV) beam, as a novel paradigm to carry orbital angular momentum(OAM), owns constant radius of energy intensity and infinite mode of helical patterns, which overcomes the divergence performances of conventional vortex beam. However, common approaches for PV beam generation require optical cascading systems that should constitute of various lenses and components with bulk volume and high alignment standards,also cannot realize PV customization. Thus, in this paper, we propose a general scheme based on compact platform of geometric metasurface to achieve PV beams generations and deformable wave-front modulations. The adopted unit cell is designed with “ABA”-shaped configuration, which can high-efficiently transform circular polarization incident wave into its cross-polarized state and impose required PV phase patterns. Here, we construct series of metasurface lenses to achieve PVs with eight different OAM modes at operating frequency 10 GHz, and additionally conduct quasi-elliptical energy-ring intensities and fractional modals of PVs by introducing asymmetric periodicity and extra singularities. By exploiting compact metasurface platform, this general scheme for PV beam generation and modulation would provide a theoretical foundation for the electromagnetic waves controlling in modern wireless communication systems.

关键词： Wireless communication Polarization Optical polarization Optical vortices Metasurfaces Geometrical optics Adaptive optics Optical modulation Optical beams Lenses

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Fabrication of Ni-Zn spinel ferrite with superior magnetic performance from electric arc furnace dust and iron scale

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Journal of Iron and Steel Research International 2025年第1期32卷 105-114页

作者： Yang Li Wei-zhe Jie Chang Chen Yi Su Wu zhou hua Zhang Hong-wei Ni The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430081HubeiChina The Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan430081HubeiChina Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan430081HubeiChina

The Ni-ZnFe_(2)O_(4)(NixZn_(1-x)Fe_(2)O_(4),x=0.4-0.7)spinel was synthesized using Zn2+extracted from electric arc furnace dust(EAFD),nickel chloride hexahydrate,and Fe^(3+)extracted from iron scale as raw *** zinc was selectively extracted from EAFD using CaO roasting followed by NH_(4)Cl solution *** ferric ion was leached from iron scale using HCl solution as acid *** experimental results demonstrate a high level of efficiency in the extraction of zinc,with a rate of 97.5%,and the leaching rate of ferric ion is 96.89%.The composition of the leaching solution is primary zinc and iron with low calcium,which is beneficial to the preparation of spinel *** influence of Ni content(x)and calcination temperature on the synthesis and magnetic properties of NixZn_(1-x)Fe_(2)O_(4)compounds was investigated by X-ray diffraction,scanning electron microscopy,and vibrating sample *** results revealed that both Ni content and calcination temperature significantly affect the synthesis and magnetic properties of spinel NixZn_(1-x)Fe_(2)O_(4).Under the conditions of Ni content set at x=0.6,calcination temperature of 1100℃,and a duration of 2 h,a spinel NixZn_(1-x)Fe_(2)O_(4)with high saturation magnetization(Ms=65.7 A m2 kg-1)and low coercivity(Hc=0.056 A m^(-1))was obtained.

关键词： Electric furnace arc dust Iron scale Spinel ferrite Magnetic performance Calcination temperature

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Dispatchable Capability of Aggregated Electric Vehicle Charging in Distribution Systems

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Energy Engineering 2025年第1期122卷 129-152页

作者： Shiqian Wang Bo Liu Yuanpeng hua Qiuyan Li Binhua Tang Jianshu zhou Yue Xiang Economic and Technology Research Institute State Grid Henan Electric Power CompanyZhengzhou450052China College of Electrical Engineering Sichuan UniversityChengdu610065China

This paper introduces a method for modeling the entire aggregated electric vehicle(EV)charging process and analyzing its dispatchable *** methodology involves developing a model for aggregated EV charging at the charging station level,estimating its physical dispatchable capability,determining its economic dispatchable capability under economic incentives,modeling its participation in the grid,and investigating the effects of different scenarios and EV penetration on the aggregated load dispatch and dispatchable *** results indicate that using economic dispatchable capability reduces charging prices by 9.7%compared to physical dispatchable capability and 9.3%compared to disorderly ***,the peak-to-valley difference is reduced by 64.6%when applying economic dispatchable capability with 20%EV penetration and residential base load,compared to disorderly charging.

关键词： Aggregated charging dispatchable capability peak shaving and valley filling the economics of charging demand response

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Bioinspired smart dual-layer hydrogels system with synchronous solar and thermal radiation modulation for energy-saving all-season temperature regulation

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Journal of Energy Chemistry 2025年第2期101卷 175-190页

作者： Meng-Chen huang Chao-hua Xue Zhongxue Bai Jun Cheng Yong-Gang Wu Chao-qun Ma Li Wan Long Xie Hui-Di Wang Bing-Ying Liu Xiao-Jing Guo College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology School of Manufacture Science and Engineering Key Laboratory of Testing Technology for Manufacturing Process Ministry of Education Southwest University of Science and Technology School of Life Science and Engineering Southwest University of Science and Technology Northwest Institute for Nonferrous Metal Research Shaanxi Key Laboratory of Biomedical Metal Materials

All-season thermal management with zero energy consumption and emissions is more crucial to global decarbonization over traditional energy-intensive cooling/heating ***,the static single thermal management for cooling or heating fails to self-regulate the temperature in dynamic seasonal temperature ***,inspired by the dual-temperature regulation function of the fur color changes on the backs and abdomens of penguins,a smart thermal management composite hydrogel(PNA@H-PM Gel) system was subtly created though an "on-demand" dual-layer structure design *** PNA@H-PM Gel system features synchronous solar and thermal radiation modulation as well as tunable phase transition temperatures to meet the variable seasonal thermal requirements and energy-saving demands via self-adaptive radiative cooling and solar heating ***,this system demonstrates superb modulations of both the solar reflectance(ΔR=0.74) and thermal emissivity(ΔE=0.52) in response to ambient temperature changes,highlighting efficient temperature regulation with average radiative cooling and solar heating effects of 9.6℃ in summer and 6.1℃ in winter,***,compared to standard building baselines,the PNA@H-PM Gel presents a more substantial energy-saving cooling/heating potentials for energy-efficient buildings across various regions and *** novel solution,inspired by penguins in the real world,will offer a fresh approach for producing intelligent,energy-saving thermal management materials,and serve for temperature regulation under dynamic climate conditions and even throughout all seasons.

关键词： Energy-saving Radiative cooling Self-adaptive thermal management Spectral modulation Thermochromic hydrogel

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Anomalous open orbits in Hofstadter spectrum of Chern insulator

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Science China(Physics,Mechanics & Astronomy) 2025年第3期Mechanics & Astronomy) .卷 143-148页

作者： Haijiao Ji Peng zhou Noah F.Q.Yuan hua Jiang Haiwen Liu X.C.Xie Center for Advanced Quantum Studies Department of Physics Beijing Normal University Tsung-Dao Lee Institute Shanghai Jiao Tong University Department of Mathematics UC Berkeley Institute for Nanoelectronic Devices and Quantum Computing Fudan University International Center for Quantum Materials School of Physics Peking University Hefei National Laboratory

The nontrivial band topology of Chern insulator can enrich the content of its Hofstadter butterfly spectra, which is closely related to recent experiments in twisted bilayer graphene and cold atom systems. We investigate the Hofstadter spectrum for various models of Chern insulators under a rational flux φ0/q, here φ0=h/e and q being an integer. We find the number of splitting subbands is |q-C| with C denoting the Chern number of parent band. Importantly, anomalous open-orbital subbands with Chern numbers q-1 and-q-1 emerge unexpectedly, which are beyond the parameter window（-q/2, q/2） of the Diophantine equation studied by Thouless-Kohmoto-Nightingale-den Nijs [Phys. Rev. Lett. 49, 405（1982）]. The emergence of anomalous open orbits can be traced by analyzing the evolution of the Hofstadter spectrum, identifying as a new type of topological phase transition. These novel findings not only pinpoint the peculiar Hofstadter spectrum of Chern insulator, but also provide routes to study exotic characteristics beyond the Landau level physics.

关键词： Hofstadter spectrum topological phase transition open orbit

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Tanreqing Injection Inhibits Activation of NLRP3 Inflammasome in Macrophages Infected with Influenza A Virus by Promoting Mitophagy

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Chinese Journal of Integrative Medicine 2025年第1期31卷 19-27页

作者： LIU Tian-yi HAO Yu MAO Qin zhou Na LIU Meng-hua WU Jun WANG Yi YANG Ming-rui School of Life Sciences Beijing University of Chinese MedicineBeijing102488China Experimental Research Center China Academy of Chinese Medical SciencesBeijing100700China

Objective: To investigate the inhibitory effect of Tanreqing Injection(TRQ) on the activation of nucleotide-binding oligomerization domain-like receptor pyrin domain containing 3(NLRP3) inflammasome in macrophages infected with influenza A virus and the underlying mechanism based on mitophagy pathway. Methods:The inflammatory model of murine macrophage J774A.1 induced by influenza A virus [strain A/Puerto Rico/8/1934(H1N1), PR8] was constructed and treated by TRQ, while the mitochondria-targeted antioxidant Mito-TEMPO and autophagy specific inhibitor 3-methyladenine(3-MA) were used as controls to intensively study the anti-inflammatory mechanism of TRQ based on mitophagy-mitochondrial reactive oxygen species(mt ROS)-NLRP3 inflammasome pathway. The levels of NLRP3, Caspase-1 p20, microtubule-associated protein 1 light chain 3 Ⅱ(LC3Ⅱ) and P62 proteins were measured by Western blot. The release of interleukin-1β(IL-1β) was tested by enzyme linked immunosorbent assay, the mt ROS level was detected by flow cytometry, and the immunofluorescence and co-localization of LC3 and mitochondria were observed under confocal laser scanning microscopy. Results: Similar to the effect of Mito-TEMPO and contrary to the results of 3-MA treatment, TRQ could significantly reduce the expressions of NLRP3, Caspase-1 p20, and autophagy adaptor P62, promote the expression of autophagy marker LC3Ⅱ, enhance the mitochondrial fluorescence intensity, and inhibit the release of mt ROS and IL-1β(all P<0.01).Moreover, LC3 was co-localized with mitochondria, confirming the type of mitophagy. Conclusion: TRQ could reduce the level of mt ROS by promoting mitophagy in macrophages infected with influenza A virus, thus inhibiting the activation of NLRP3 inflammasome and the release of IL-1β, and attenuating the inflammatory response.

关键词： Tanreqing Injection influenza virus anti-inflammation mitophagy nucleotide-binding oligomerization domain-like receptor pyrin domain containing 3 inflammasome Chinese medicine

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Boron-containing copolymers as environmentally friendly lubricant additives

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日用化学工业(中英文) 2025年第1期55卷 1-11页

作者： hua Xue Fengchun Liang Weili Yang qun He Meirong Cai Feng zhou Weifeng Bu Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic Chemistryand College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhouGansu 730000China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouGansu 730000China

Increasing environmental concerns about limiting harmful emissions has necessitated sulfur-and phosphorus-free green lubricant *** boron-containing compounds have been widely investigated as green lubricant additives,their macromolecular analogs have been rarely considered yet to develop environmentally friendly lubricant *** this work,a series of boron-containing copolymers have been synthesized by free-radical copolymerization of stearyl methacrylate and isopropenyl boronic acid pinacol ester with different feeding ratios(S_(n)-r-B_(m),n=1,m=1/3,1,2,3,5,9).The resulting copolymers of S_(n)-r-B_(m)(n=1,m=1/3,1,2,3,5)are readily dispersed in the PAO-10 base oil and form micelle-like aggregates with hydrodynamic diameters ranging from 9.7 to 52 ***-IV oscillating reciprocating tribological tests on ball-on-flat steel pairs show that compared with the base oil of PAO-10,the friction coefficients and wear volumes of the base oil solutions of S_(n)-r-B_(m)decrease considerably up to 62%and 97%,***,the base oil solution of S_(1)-r-B_(1)exhibits an excellent load-bearing capacity of(850±100)*** superior lubricating properties are due to the formation of protective tribofilms comprising S_(n)-r-B_(m),boron oxide,and iron oxide compounds on the lubricated steel ***,the boron-containing copolymers can be regarded as a novel class of environmentally friendly lubricating oil macroadditives for efficient friction and wear reduction without sulfur and phosphorus elements.

关键词： friction and wear reduction lubricant additives boron-containing copolymers polymerization

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Research hotspot and trend of plant water use in karst: Based on a bibliometric analysis from 1984 to 2022

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China Geology 2025年第1期8卷 214-229页

作者： De-gen Zhu Jing Ning Hui Yang Jun-bing Pu Jian-hua Cao Meng-xia zhou Mitja Prelovsek Natasa Ravbar Key Laboratory of Karst Dynamics MNR and Guangxi Institute of Karst GeologyChinese Academy of Geological SciencesGuilin 541000China International Research Center on Karst under the Auspices of UNESCO National Center for International Research on Karst Dynamic System and Global ChangeGuilin 541000China Pingguo Guangxi Karst EcosystemNational Observation and Research StationPingguo 531406China Chongqing Normal University Chongqing 400000China Research Centre of the Slovenian Academy of Sciences and Art Karst Research InstituteTitov trg 26230 PostojnaSlovenia

Research on the ecohydrological processes of terrestrial plants is a frontier field comprising ecology,hydrology and global change research,yielding the key theoretical foundations of *** karst areas,due to its unique geological background,the karst landscape is strongly developed,with high bedrock exposure,high permeability,fragmented soils,shallow soils,and high spatial heterogeneity,resulting in very limited water storage for plant uptake and growth in rock fissures and shallow ***,water conditions are an important ecological factor influencing plant *** comprehensively understand the current progress and development trends in plant water use research focusing on karst areas,this paper uses the VOSviewer software to analyze the literature on plant water use in karst areas between 1984 and *** results showed that:(1)Research on plant water use in karst areas has developed rapidly worldwide,and the number of relevant studies in the literature have increased year by year,which together means that it is attracting more and more attention.(2)The investigation of plant water sources,geological background of karst areas,seasonal arid tropical climates,the relationship betweenδ13C values and plant water use efficiency,karst plant water use in karst savannas and subtropical areas,and ecosystems under climate change yields the knowledge base in this field.(3)Most studies in this area focus on the division of water sources of plants in karst areas,the methods of studying the water use sources of plants,and the water use strategies and efficiency of plants.(4)Future research will focus on how plant water use in karst areas is influenced by Earth’s critical zones,climate change,and ecohydrological *** studies will provide a key scientific basis for guiding ecological restoration and promoting sustainable development in karst areas.

关键词： Terrestrial plants Plant water use Karst area Climate change Ecohydrology Bibliometrics Ecological restoration Sustainable development Environmental restoration engineering Web of Science

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Impact of Spinal Manipulative Therapy on Brain Function and Pain Alleviation in Lumbar Disc Herniation:A Resting-State fMRI Study

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Chinese Journal of Integrative Medicine 2025年第2期31卷 108-117页

作者： zhou Xing-chen WU Shuang WANG Kai-zheng CHEN Long-hao WEI Zi-cheng LI Tao hua Zi-han XIA Qiong LYU Zhi-zhen LYU Li-jiang Department of Spine The Third Affiliated Hospital of Zhejiang Chinese Medicine UniversityHangzhou(310053)China Department of Spine The Third School of Clinical MedicineZhejiang Chinese Medicine UniversityHangzhou(310053)China Research Institute of Tuina(Spinal Disease) Zhejiang Chinese Medicine UniversityHangzhou(310053)China

Objective:To elucidate how spinal manipulative therapy(SMT)exerts its analgesic effects through regulating brain function in lumbar disc herniation(LDH)patients by utilizing resting-state functional magnetic resonance imaging(rs-f MRI).Methods:From September 2021 to September 2023,we enrolled LDH patients(LDH group,n=31)and age-and sex-matched healthy controls(HCs,n=28).LDH group underwent rs-f MRI at 2 distinct time points(TPs):prior to the initiation of SMT(TP1)and subsequent to the completion of the SMT sessions(TP2).SMT was administered once every other day for 30 min per session,totally 14 treatment sessions over a span of 4 *** did not receive SMT treatment and underwent only one f MRI ***,participants in LDH group completed clinical questionnaires on pain using the Visual Analog Scale(VAS)and the Japanese Orthopedic Association(JOA)score,whereas HCs did not undergo clinical scale *** effects on the brain were jointly characterized using the amplitude of low-frequency fluctuations(ALFF)and regional homogeneity(Re Ho).Correlation analyses were conducted between specific brain regions and clinical ***:Following SMT treatment,pain symptoms in LDH patients were notably alleviated and accompanied by evident activation of effects in the *** comparison to TP1,TP2 exhibited the most significant increase in ALFF values for Temporal_Sup_R and the most notable decrease in ALFF values for Paracentral_Lobule_L(voxelwise P30;FDR correction).Additionally,the most substantial enhancement in Re Ho values was observed for the Cuneus_R,while the most prominent reduction was noted for the Olfactory_R(voxelwise P30;FDR correction).Moreover,a comparative analysis revealed that,in contrast to HCs,LDH patients at TP1 exhibited the most significant increase in ALFF values for Temporal_Pole_Sup_L and the most notable decrease in ALFF values for Frontal_Mid_L(voxelwise P30;FDR correction).Fur

关键词： functional magnetic resonance imaging lumbar disc herniation spinal manipulative therapy pain

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