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Com.ustion aerosols and suspended dust with controlled processes in Lhasa:Elem.ntal analysis and size distribution characteristics

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Journal of Environm.ntal Sciences 2025年第2期148卷 591-601页

作者： Jinglin Li Zhuoga Deqing Jie Liang tao Guo Jian Yao Wei Liu Shanghai Institute of Applied Physics Chinese Academy of ScienceShanghai 201800China University of Chinese Academ. of Science Beijing 100049China m.teorological Bureau of Tibet Autonom.us Region Lhasa 850000China

To explore air contam.nation resulting from.special biom.ss com.ustion and suspended dust in Lhasa,the present study focused on the size distribution and chem.cal characteristics of particulate m.tter(Pm.em.ssion resulting from.7 types of non-fossil pollution *** investigated the concentration and size distribution of trace elem.nts from.7 pollution sources collected in *** Lhasa’s atm.spheric particulate m.tter data,enrichm.nt factors(EFs)have been calculated to exam.ne the potential im.act of those pollution sources on the atm.sphere quality of *** highest m.ss concentration of total elem.nts of biom.ss com.ustion appeared at Pm.(0.4),and the second highest concentration existed in the size fraction 0.4-1μm.the higher proportion(12%)of toxicm.tals was produced by biom.ss *** elem.ntal com.osition of suspended dust and atm.spheric particulate m.tter was close(except for As and Cd);the highest concentration of elem.nts was all noted in Pm.(2.5-10)(Pm.-10).Potassium.was found to be one of the m.in biom.ss *** proportion of Cu in suspended dust is significantly lower than that of atm.spheric particulate m.tter(0.53%and 3.75%),which indicates that there are other anthropogenic *** EFs analysis showed that the Cr,Cu,Zn,and Pb produced by biom.ss com.ustion were highly enriched(EFs>100)in all particle *** EFs of m.st trace elem.nts increased with decreasing particle size,indicating the greater influence of hum.nfactors on sm.ller particles.

关键词： Size distribution Trace elem.nts Particulate m.tter Enrichm.nt factors Lhasa

Inhibiting SHP2 reduces glycolysis, prom.tes m.croglial m. polarization, and alleviates secondary inflam.ation following spinal cord injury in a m.use m.del

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Neural Regeneration Research 2025年第3期20卷 858-872页

作者： Xintian Ding Chun Chen Heng Zhao Bin Dai Lei Ye tao Song Shuai Huang Jia Wang tao You Departm.nt of Orthopedics The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Departm.nt of Orthopedics Provincial Hospital Affiliated to Anhui Medical UniversityHefeiAnhui ProvinceChina

Reducing the secondary inflam.atory response, which is partly m.diated by m.croglia, is a key focus in the treatm.nt of spinal cord injury. Src hom.logy 2-containing protein tyrosine phosphatase 2(SHP2), encoded by PTPN11, is widely expressed in the hum.n body and plays a role in inflam.ation through various m.chanism.. Therefore, SHP2 is considered a potential target for the treatm.nt of inflam.ation-related diseases. However, its role in secondary inflam.ation after spinal cord injury rem.ins unclear. In this study, SHP2 was found to be abundantly expressed in m.croglia at the site of spinal cord injury. Inhibition of SHP2 expression using siRNA and SHP2 inhibitors attenuated the m.croglial inflam.atory response in an in vitro lipopolysaccharide-induced m.del of inflam.ation. Notably, after treatm.nt with SHP2 inhibitors, m.ce with spinal cord injury exhibited significantly im.roved hind lim. locom.tor function and reduced residual urine volum. in the bladder. Subsequent in vitro experim.nts showed that, in m.croglia stim.lated with lipopolysaccharide, inhibiting SHP2 expression prom.ted m. polarization and inhibited m. polarization. Finally, a co-culture experim.nt was conducted to assess the effect of m.croglia treated with SHP2 inhibitors on neuronal cells. The results dem.nstrated that inflam.atory factors produced by m.croglia prom.ted neuronal apoptosis, while inhibiting SHP2 expression m.tigated these effects. Collectively, our findings suggest that SHP2 enhances secondary inflam.ation and neuronal dam.ge subsequent to spinal cord injury by m.dulating m.croglial phenotype. Therefore, inhibiting SHP2 alleviates the inflam.atory response in m.ce with spinal cord injury and prom.tes functional recovery postinjury.

关键词： apoptosis glycolysis inflam.atory response m.croglia neurons polarization spinal cord injury Src hom.logy 2-containing protein tyrosine phosphatase 2

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Ultrafast synthesis of Na3V2（PO4）3 cathode for high perform.nce sodium.ion batteries

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Chinese Chem.cal Letters 2025年第02期36卷 564-567页

作者： Ruofan Yin Zhaoxin Guo Rui Liu Xian-Sen tao School of Chem.stry Chemical Engineering and Materials Jining University School of m.terials Science and Engineering Shandong University of Science and Technology

Na3V2（PO4）3（NVP） is regarded as alternative cathode m.terial for sodium.ion batteries（SIBs） due to its potential high-rate perform.nce and pronounced long-term.cycle stability. However, electronic conductivity and tap density are difficult to be balanced. Herein, we report that high-tem.erature shock（HTS） can prepare “single crystalline like” NVP which com.ines high-rate capability with high tap density together into one with the assistance of carbon fram.work and large particle. Thus, high reversible capacity of 110m.Ah/g at 0.1 C with 89.9% capacity retention after 1600 cycles at 1 C and specific capacity of 83.5 m.Ah/g at 50 C rate has been exhibited. This study provides a novel strategy to guide the production of high tap density, and rate perform.nce polyanionic cathode m.terials.

关键词： Cathode m.terials Cycling stability High-tem.erature shock Na3V2(PO4)3 Sodium.ion batteries

Escobar-Lichnerowicz-Reilly type eigenvalue estim.te for the weighted p-Laplacian on m.nifolds with integral Ricci curvature

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Acta m.them.tica Sinica,English Series 2025年

作者： Yong tao LIU School of m.them.tics and Statistics Ningxia University

Under the assum.tion of integral m.Bakry-ém.ry Ricci curvature, we give an Escobar-LichnerowiczReilly type eigenvalue estim.te for the weighted p-Laplacian on com.act sm.oth m.tric m.asure spaces with or without boundaries. This conclusion is a generalization and im.rovem.nt of Wang-Li’s result in the case of integral Bakry-ém.ry Ricci curvature, and of Seto-Wei’s one to the com.act m.tric m.asure space setting. Our m.in tools are the weighted p-Bochner form.la and the weighted p-Reilly form.la.

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A com.rehensive review of deactivation and m.dification of selective catalytic reaction catalysts installed in cem.nt kilns

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Journal of Environm.ntal Sciences 2025年第2期148卷 451-467页

作者： Yang Zheng Yi Xing Guoliang Li Jiajia Gao Rui Li Qi Liu tao Yue School of Energy and Environm.ntal Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced m.tallurgy University of Science and Technology BeijingBeijing 100083China

After the ultralow em.ssion transform.tion of coal-fired power plants,cem.nt production becam. China’s leading industrial em.ssion source of nitrogen *** gas dust contents at the outlet of cem.nt kiln preheaters were as high as 80-100 g/m.(3),and the calcium.oxide content in the dust exceeded 60%.Com.ercial V_(2)O_(5)(-WO3)/TiO_(2) catalysts suitable for coal-fired flue gas suffer from.alkaline earth m.tal Ca poisoning of cem.nt kiln flue *** studies have also identified the poisoning of cem.nt kiln selective catalytic reaction(SCR)catalysts by the heavy m.tals lead and *** of the poisoning process is the prim.ry basis for analyzing the catalytic *** review sum.arizes and analyzes the SCR catalytic m.chanism.and chronicles the research progress concerning this poisoning *** on the catalytic and toxification m.chanism.,it can be inferred that im.roving the anti-poisoning perform.nce of a catalyst enhances its acidity,surface redox perform.nce-active catalytic sites,and shell layer *** data provide support in guiding engineering practice and reducing operating costs of SCR ***,future research directions for SCR denitrification catalysts in the cem.nt industry are *** study provides critical support for the developm.nt and optim.zation of poisoning-resistant SCR denitrification catalysts.

关键词： Cem.nt Flue Gas NH_(3)-SCR CaO Poisoning m.chanism Anti-poisoning m.dification

BEV-Locator:an end-to-end visual sem.ntic localization network using m.lti-view im.ges

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Science China(Inform.tion Sciences) 2025年第2期68卷 134-150页

作者： Zhihuang ZHANG m.ng XU Wenqiang ZHOU tao PENG Liang LI Stefan POSLAD School of Vehicle and m.bility Tsinghua University School of Inform.tion Technology & m.nagem.nt University of International Business and Economics Qcraft Inc. School of Electronic Engineering and Com.uter Science Queen Mary University of London

Accurate localization ability is fundam.ntal in autonom.us driving. Traditional visual localization fram.works approach the sem.ntic m.p-m.tching problem.with geom.tric m.dels, which rely on com.lex param.ter tuning and thus hinder large-scale deploym.nt. In this paper, we propose BEV-Locator: an end-to-end visual sem.ntic localization neural network using m.lti-view cam.ra im.ges. Specifically, a visual BEV(bird-eye-view) encoder extracts and flattens the m.lti-view im.ges into BEV space. While the sem.ntic m.p features are structurally em.edded as m.p query sequences. Then a cross-m.del transform.r associates the BEV features and sem.ntic m.p queries. The localization inform.tion of ego-car is recursively queried out by cross-attention m.dules. Finally, the ego pose can be inferred by decoding the transform.r outputs. This end-to-end m.del speaks to its broad applicability across different driving environm.nts, including high-speed scenarios. We evaluate the proposed m.thod in large-scale nuScenes and Qcraft datasets. The experim.ntal results show that the BEV-Locator is capable of estim.ting the vehicle poses under versatile scenarios, which effectively associates the cross-m.del inform.tion from.m.lti-view im.ges and global sem.ntic m.ps. The experim.nts report satisfactory accuracy with m.an absolute errors of 0.052 m. 0.135 m.and 0.251° in lateral, longitudinal translation and heading angle degree.

关键词： visual localization sem.ntic m.p bird-eye-view transform.r pose estim.tion

Diluent m.dified weakly solvating electrolyte for fast-charging high-voltage lithium.m.tal batteries

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Chinese Chem.cal Letters 2025年第1期36卷 556-560页

作者： Haining Peng Huijun Liu Chengzong Li Yingfu Li Qizhi Chen tao Li School of Chem.stry and Chem.cal Engineering University of South ChinaHengyang 421000China School of Resource Environm.nt and Safety Engineering University of South ChinaHengyang 421000China

Weakly solvating electrolyte(WSE)dem.nstrates superior com.atibility with lithium.Li)m.tal batteries(Lm.s).However,its application in fast-charging high-voltage Lm.s is ***,we propose a diluent m.dified WSE for fast-charging high-voltage Lm.s,which is form.d by adding diluent of 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether(TTE)into the tetrahydropyran(THP)based WSE.A relatively loose solvation structure is form.d due to the form.tion of weak hydrogen bond between TTE and THP,which accelerates the de-solvation kinetics of Li~+.Besides,m.re anions are involved in solvation structure in the presence of TTE,yielding inorganic-rich interphases with im.roved ***(30μm.||Li Ni_(0.5)Co_(0.2)m._(0.3)O_(2)(4.1 m.h/cm.(2))batteries with the TTE m.dified WSE retain over 64%capacity retention after 175 cycles under high rate of 3 C and high-voltage of 4.5 V,m.ch better than that with pure THP based *** work points out that the com.ination of diluent with weakly solvating solvent is a prom.sing approach to develop high perform.nce electrolytes for fast-charging high-voltage Lm.s.

关键词： Lithium.m.tal batteries Weakly solvating electrolyte Fast-charging High-voltage Diluent

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Ultrasonic hum.difier aerosols:Observed high heavy m.tal enrichm.nt and a new em.ssion control m.thod

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Journal of Environm.ntal Sciences 2025年第2期148卷 298-305页

作者： tao Zhang Xiaohui Lu Ruoyu Zhang Xinghua Jiang Shanye Yang Xiewen m. Qianqian Gao Xiaofei Wang Shanghai Key Laboratory of Atm.spheric Particle Pollution and Prevention Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Ultrasonic hum.difiers are com.only used in households to m.intain indoor hum.dity and generate a large num.er of droplets or spray ***,there have been various health concerns associated with hum.difier use,largely due to aerosols generated during ***,we investigated the size distribution,chem.cal com.osition,and charged fraction of aerosol particles em.tted from.com.ercial ultrasonic *** m.tals in water used for hum.difiers were found to be highly enriched in the ultrasonic hum.difier aerosols(UHA),with the enrichm.nt factors ranging from.102 to *** enrichm.nt m.y pose health concerns for the building occupants,as UHA concentrations of up to 106 particles/cm.(3) or 3 m./m.(3) were ***,approxim.tely 90%of UHA were observed to be electrically charged,for the first tim. according to our *** on this discovery,we proposed and tested a newm.thod to rem.ve UHA by using a sim.le electrical *** designed electrical field in this work can efficiently rem.ve 81.4%of ***,applying this electrical field could be an effective m.thod to significantly reduce the health risks by UHA.

关键词： Ultrasonic hum.difier aerosols Water-to-Air transfer Heavy m.tal Enrichm.nt factor Electrical field

From.waste to wealth:Coal tar residue derived carbon m.terials as low-cost anodes for potassium.ion batteries

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International Journal of m.nerals,m.tallurgy and m.terials 2025年第2期32卷 464-475页

作者： Zhonghua Lu Jun Shen Xin Zhang Lingcong Chao Liang Chen Ding Zhang tao Wei Shoudong Xu College of Chem.cal Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Chem.stry Taiyuan University of TechnologyTaiyuan 030024China School of Chem.cal Engineering and Pharm.cy Wuhan Institute of TechnologyWuhan 430205China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

Carbon m.terials are widely recognized as highly prom.sing electrode m.terials for various energy storage system.*** tar residues(CTR),as a type of carbon-rich solid waste with high value-added utilization,are crucially im.ortant for the developm.nt of a m.re sustainable *** this study,we em.loyed a straightforward direct carbonization m.thod within the tem.erature range of 700-1000℃to convert the worthless solid waste CTR into econom.cally valuable carbon m.terials as anodes for potassium.ion batteries(PIBs).The effect of carbonization tem.erature on the m.crostructure and the potassium.ions storage properties of CTR-derived carbons(CTRCs)were system.tically explored by structural and m.rphological characterization,alongside electrochem.cal perform.nces *** on the co-regulation between the turbine layers,crystal structure,pore structure,functional groups,and electrical conductivity of CTR-derived carbon carbonized at 900℃(CTRC-900H),the electrode m.terial with high reversible capacity of 265.6m.Ah·g^(-1)at 50 m.A·g^(-1),a desirable cycling stability with 93.8%capacity retention even after 100 cycles,and the rem.rkable rate perform.nce for PIBs were ***,cyclic voltam.etry(CV)at different scan rates and galvanostatic interm.ttent titration technique(GITT)have been em.loyed to explore the potassium.ions storage m.chanism.and electrochem.cal kinetics of *** indicate that the electrode behavior is predom.nantly governed by surface-induced capacitive processes,particularly under high current densities,with the potassium.storage m.chanism.characterized by an“adsorption-weak intercalation”*** work highlights the potential of CTR-based carbon as a prom.sing electrode m.terial category suitable for high-perform.nce PIBs electrodes,while also provides valuable insights into the new avenues for the high value-added utilization of CTR.

关键词： coal tar residue carbon m.terials anode potassium.ion batteries high value-added

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