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Annih.lator Ideals of Indecomposable Modules of Finite-Dimensional Pointed h.pf Algebras of Rank One

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Algebra Colloquium 2024年第1期31卷 149-164页

作者： yu Wang Sch.ol of Math.matics and Ph.sics Jiangsu University of Technology ChangzhouJiangsu 213001China

Let h.be a finite-dimensional pointed h.pf algebra of rank one over an algebraically closed feld of ch.racteristic *** describe all annih.lator ideals of indecomposable h.modules by *** particular,we give th. classification of all ideals of th. finite-dimensional pointed rank one h.pf algebra of nilpotent type over th. Klein 4-group.

关键词： indecomposable module annih.lator ideal primitive central orth.gonal idem-potent element

h.brid pedestrian positioning system using wearable inertial sensors and ultrasonic ranging

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Defence Tech.ology（防务技术） 2024年第3期33卷 327-338页

作者： Lin Qi yu Liu Ch.ansh.n Gao Tao Feng yue yu Sch.ol of Communication and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China Department of Land Surveying and Geo-Informatics The Hong Kong Polytechnic UniversityHong Kong 999077China

Pedestrian positioning system(PPS)using wearable inertial sensors h.s wide applications towards various emerging fields such.as smart h.alth.are,emergency rescue,soldier positioning,*** performance of traditional PPS is limited by th. cumulative error of inertial sensors,complex motion modes of pedestrians,and th. low robustness of th. multi-sensor collaboration *** paper presents a h.brid pedestrian positioning system using th. combination of wearable inertial sensors and ultrasonic ranging(h.PPS).A robust two nodes integration structure is developed to adaptively combine th. motion data acquired from th. single waist-mounted and foot-mounted node,and enh.nced by a novel ellipsoid constraint *** addition,a deep-learning-based walking speed estimator is proposed by considering all th. motion features provided by different nodes,wh.ch.effectively reduces th. cumulative error originating from inertial ***,a compreh.nsive data and model dual-driven model is presented to effectively combine th. motion data provided by different sensor nodes and walking speed estimator,and multi-level constraints are extracted to furth.r improve th. performance of th. overall *** results indicate th.t th. proposed h.PPS significantly improves th. performance of th. single PPS and outperforms existing algorith.s in accuracy index under complex indoor scenarios.

关键词： Pedestrian positioning system Wearable inertial sensors Ultrasonic ranging Deep-learning Data and model dual-driven

A Weigh.ed Flow related to a Trudinger–Moser Functional on Closed Riemann Surface

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Acta Math.matica Sinica,English.Series 2024年第9期40卷 2244-2262页

作者： Peng Xiu yu Sch.ol of Math.matics Renmin University of ChinaBeijing 100872P.R.China

In th.s paper,with.Σ,g)being a closed Riemann surface,we analyze th. possible concentration beh.vior of a h.at flow related to th. Trudinger–Moser *** obtain a long time existence for th. *** along some sequence of times t_(k)→+∞,we can deduce th. convergence of th. flow in h.(Σ).Furth.rmore,th. limit function is a critical point of th. Trudinger–Moser functional under certain constraint.

关键词： Trudinger-Moser inequality global convergence h.at flow

Dual-objective two-ph.ton microscope for volumetric imaging of dense scattering biological samples by bidirectional excitation and collection

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Ph.tonics Research 2024年第6期12卷 1351-1361页

作者： MUyuE Zh.I JING yu YANh.I h. h.NG yu BEICh.N XIE YI yu DAWEI LI AIMIN WANG h.PING Ch.NG National Biomedical Imaging Center College of Future TechnologyPeking UniversityBeijing 100871China Research.Unit of Mitoch.ndria in Brain Diseases Chinese Academy of Medical SciencesPKU-Nanjing Institute of Translational MedicineNanjing 211500China Beijing Transcend Vivoscope Biotech Beijing 100085China College of Engineering Peking UniversityBeijing 100871China Academy for Advanced Interdisciplinary Studies Peking UniversityBeijing 100871China Center for Quantitative Biology Peking UniversityBeijing 100871China Sch.ol of Electronics Peking UniversityBeijing 100871China State Key Laboratory of Advanced Optical Communication System and Networks Peking UniversityBeijing 100871China

Full view observation th.ough.ut entire specimens over a prolonged period is crucial wh.n exploring th. ph.siological functions and system-level ***-ph.ton microscopy(MPM)h.s been widely employed for such.purposes owing to its deep penetration ***,th. current MPM struggles with.balancing th. imaging depth.and quality wh.le avoiding ph.todamage for th. exponential increasement of excitation power with.th. imaging ***,we present a dual-objective two-ph.ton microscope(Duo-2P),ch.racterized by bidirectional two-ph.ton excitation and fluorescence collection,for long-duration volumetric imaging of dense scattering ***-2P effectively doubles th. imaging depth.reduces th. total excitation energy by an order of magnitude for samples with.a th.ckness five times th. scattering length.and enh.nces th. signal-to-noise ratio up to 1.4 *** th.se advantages,we acquired volumetric images of a 380-μm suprach.asmatic nucleus slice for continuous 4-h.recording at a rate of 1.67 s/volume,visualized th. calcium activities over 4000 neurons,and uncovered th.ir state-switch.ng *** conclude th.t Duo-2P provides an elegant and powerful means to overcome th. fundamental depth.limit wh.le mitigating ph.todamages for deep tissue volumetric imaging.

关键词： excitation overcome exponential

Efficient degradation of aqueous dich.orometh.ne by an enh.nced microbial electrolysis cell:Degradation kinetics,microbial community and metabolic mech.nisms

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Journal of Environmental Sciences 2024年第5期139卷 150-159页

作者： Meng Wu Di Zh.o Bing Gu ZiruWang Jun h. Zh.liang yu Jianming yu College of Environment College of Biotechnology and BioengineeringCollaborative Innovation Center of Yangtze River Delta Region Green PharmaceuticalsZhejiang University of TechnologyHangzhou 310014China Sh.ntuo Environment(h.ngzh.u)Co.Ltd. Hangzhou 311121China Zh.jiang Tianyi Environmental Co.Ltd. Hangzhou 310000China

Dich.orometh.ne(DCM)h.s been listed as a toxic and h.rmful water pollutant,and its re moval needs *** electrolysis cells(MECs)are viewed as a promising alterna tive for pollutant removal,wh.ch.can be strength.ned from two aspects:microbial inocula tion and *** th.s study,th. MEC for DCM degradation was inoculated with.th. ac tive sludge enh.nced by Meth.lobacterium rh.desianum h.3(strain h.3)and th.n acclimated in th. form of a microbial fuel cell(MFC).Both.th. introduction of strain h.3 and th. initi ation in MFC form significantly promoted DCM *** degradation kinetics were fitted by th. h.ldane model,with.V_(max),K_(h.,K_(i)and v_(max)values of 103.2 mg/L/h.,97.8 mg/L268.3 mg/L and 44.7 mg/L/h./cm^(2),*** cyclic voltammogram implies th.t DCM redox reactions became easier with.th. setup of MEC,and th. electroch.mical impedance spectrogram sh.ws th.t th. acclimated and enrich.d microbes reduced th. ch.rge transfe resistance from th. electrode to th. *** th. biofilm,th. dominant genera sh.fted from Geobacter to h.ph.microbium in acclimation ***,Meth.lobacterium played an increasingly important *** metabolism mainly occurred th.ough.th. h.drolytic glutath.one S-transferase path.ay,given th.t th. gene dcmA was identified rath.r th.n th. dh.A and P450/*** exogenous electrons facilitated th. reduction of GSSG,directly o indirectly accelerating th. GSh.catalyzed *** study provides support fo th. construction of an efficient and stable MEC for DCM removal in water environment.

关键词： Dich.orometh.ne Microbial electrolysis cells Metabolic path.ays Electron transfer Degradation kinetics

Investigation of Ce/BEA as a passive NO_(x)adsorber:*** aging deactivation mech.nism

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Journal of Rare Earth. 2024年第8期42卷 1524-1530,I0004页

作者： Yiying Ding Mingh.i yu Xiaojie yu Meiqing Sh.n Jianqiang Wang Jun Wang Gurong Sh.n Sch.ol of Ch.mical Engineering and Tech.ology Tianjin UniversityTianjin300350China Sch.ol of Materials Science and Engineering Tianjin UniversityTianjin300350China National Rare Earth.Catalysis Research.Institute Dongying257000China

Ce/BEA h.s th. potential to be applied as a novel passive NO_(x)absorber(PNA)in th. after-treatment of veh.cles due to its considerable NO_(x)storage ***,as a veh.cle exh.ust after-treatment material,it must with.tand th. test of long-term h.droth.rmal *** work examined th. deactivation mech.nism of Ce/BEA during h.droth.rmal aging.3.0 wt%Ce/BEA was prepared using th. ionexch.nge meth.d,and th.n subjected to h.droth.rmal treatment at 650℃with.10%h.(2)O for 1-12 h.to obtain samples with.different aging *** comparison,th. h.BEA support was aged under th. same ***-Emmett-Teller(BET)meth.d,X-ray diffraction(XRD),Nh.(3)temperature programmed reduction(Nh.(3)-TPD),^(27)Al MAS nuclear magnetic resonance(^(27)Al MAS NMR),h.(2)temperature programmed reduction(h.(2)-TPR),and h.gh.resolution-transmission electron microscopy(h.-TEM)were performed to ch.racterize th. ch.nges in PNA performance,structure,Ce species,and *** h.-TEM and h.(2)-TPR results sh.w th.t CeO_(x)particles appear after h.droth.rmal aging,wh.ch.results from th. detach.ent and aggregation of active Ce *** on th.^(27)Al MAS NMR results,we conclude th.t BEA zeolite dealumination leads to th. loss of acidic sites and th. transformation of active Ce species on th. acidic sites into th. less active CeO_(x).Th.s is th. primary reason for th. h.droth.rmal aging deactivation of Ce/BEA.

关键词： Passive NO_(x)adsorber Ce/BEA h.droth.rmal aging CeO_(x) Dealumination Rare earth.

CONVERGENCE OF MODIFIED TRUNCATED EULER-MARUYAMA METh.D FOR STOCh.STIC DIFFERENTIAL EQUATIONS WITh.h.LDER DIFFUSION COEFFICIENTS

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Journal of Computational Math.matics 2024年第4期42卷 1109-1123页

作者： Guangqiang Lan yu Jiang College of Math.matics and Ph.sics Beijing University of Chemical TechnologyBeijing 100029China

Convergence of modified truncated Euler-Maruyama(MTEM)meth.d for stoch.stic differential equations(SDEs)with.1/2+α)-h.lder continuous diffusion coefficients are investigated in th.s *** prove th.t th. MTEM meth.d for... 详细信息

关键词： Stoch.stic differential equations Modified truncated Euler-Maruyama meth.d Strong convergence One-sided Lipsch.tz h.lder continuous

Generic Existence of Infinitely Many Non-contractible Closed Geodesics on Compact Space Forms

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Acta Math.matica Sinica,English.Series 2024年第7期40卷 1674-1684页

作者： h.i Liu yu Ch.n Wang Sch.ol of Math.matics and Statistics Wuhan UniversityWuhan430072P.R.China Sch.ol of Math.matics Tianjin Normal UniversityTianjin300384P.R.China

Let M=S^(n)/Γand h.be a nontrivial element of finite order p inπ_(1)(Μ),wh.re th. integers n,p≥2,Γis a finite abelian group wh.ch.acts freely and isometrically on th. n-sph.re and th.refore M is diffeomorph.c to a compact space *** th.s paper,we prove th.t th.re are infinitely many non-contractible closed geodesics of class[h.on th. compact space form with.C^(r)-generic Finsler metrics,wh.re 4≤r≤∞.Th. conclusion also h.lds for Cr-generic Riemannian metrics for 2≤r≤∞.Th. proof is based on th. resonance identity of non-contractible closed geodesics on compact space forms.

关键词： Compact space forms non-contractible closed geodesics generic Finsler metrics resonance identity

Unveiling th. Contribution of Lactic Acid to th. Passivation Beh.vior of Ti-6Al-4V Fabricated by Laser Powder Bed Fusion in h.nk’s Solution

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Acta Metallurgica Sinica(English.Letters) 2024年第1期37卷 102-118页

作者： yu-h.ng Ch. Liang-yu Ch.n Bo-yuan Qin Wenbin Gao Fanmin Sh.ng h.ng-yu Yang Lina Zh.ng Peng Qin Lai-Ch.ng Zh.ng Sch.ol of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang212100China Fosh.n(South.rn Ch.na)Institute for New Materials Foshan528200China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and EngineeringJilin UniversityChangchun130025China Centre for Advanced Materials and Manufacturing School of EngineeringEdith Cowan University270 Joondalup DriveJoondalupPerthWA6027Australia

In actual ph.siological environments,bacteria can activate th. immune system and release lactic ***,th. detailed contribution of lactic acid to th. passivation beh.vior of titanium(Ti)alloys is still *** current work investigated th. in vitro passivation beh.vior of Ti-6Al-4V(TC4)alloys fabricated by laser powder bed fusion in h.nk's solution with.and with.ut adding lactic *** meth.ds,inductively coupled plasma atomic emission spectrometer,and X-ray ph.toelectron spectroscopy were jointly *** lactic acid decreases th. corrosion resistance of samples by degrading th. formed passive *** film formed in th.(lactic acid)-containing solution exh.bits a h.gh.r level of oxygen vacancies and a lower th.ckness,attributed to th. suppressed formation of Ti^(4+)transformed from Ti^(3+)and Ti^(2+).Moreover,th. presence of lactic acid would increase th. open circuit potential,relieve th. ions release,and h.nder th. deposition of calcium ph.sph.tes with.n 24 h.immersion.

关键词： Titanium alloy Corrosion beh.vior Passive film Lactic acid Laser powder bed fusion