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Science China Mathematics 2024年第7期67卷 1623-1640页

作者： Huab.n ge Aijin Lin School of Mathematics Renmin University of ChinaBeijing100872China department of Mathematics National University of Defense TechnologyChangsha410073China

We introd.ce the character of Thurston's circle packings in the hyperb.lic b.ckground.***, some quite simple criteria are ob.ained.for the existence of hyperb.lic circle packings. For example,if a closed.surface X ad.its a circle packing with all the vertex d.grees d.(i)≥7, then it ad.its a unique complete hyperb.lic metric so that the triangulation graph of the circle packing is isotopic to a geometric d.composition of X. This criterion is sharp d.e to the fact that any closed.hyperb.lic surface ad.its no triangulations with all d.(i)≤6. As a corollary, we ob.ain a new proof of the uniformization theorem for closed.surfaces with genus g≥2;moreover, any hyperb.lic closed.surface has a geometric d.composition. To ob.ain our results, we use Chow-Luo's comb.natorial Ricci flow as a fund.mental tool.

关键词： character circle packings comb.natorial Ricci flow

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Estab.ishment of a three-d.mensional particle lib.ary for grad.d.crushed.stone b.sed.on a new aggregate morphology characterization method

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Journal of Traffic and.Transportation Engineering(English Ed.tion) 2024年第1期11卷 117-130页

作者： Haitao ge Aimin Sha Zhenqiang Han School of Future Transportation Chang'an UniversityXi'an 710064China University of Strasb.urg INSA StrasbourgCNRSICubeUMR 7357Strasbourg F-67000France School of Highway Chang'an UniversityXi'an 710064China Key Lab.ratory for Special Area Highway Engineering of Ministry of Ed.cation Chang'an UniversityXi'an 710064China

The morphology of grad.d.crushed.stone(GCS)particles has an essential influence on the performance of aggregate *** impact of particle shape is a comprehensive effect that cannot b. consid.red.separately,lead.ng to d.fficulties in estab.ishing the relationship b.tween the mixture properties and.the aggregate morphology b. using lab.ratory *** d.screte element method.d.M)is an effective way wid.ly ad.pted.to reconstruct the morphology of particles and.simulate performance tests of granular ***,selecting limited.particles characterizing a real particle-assemb.y for simulation is still a challenge in current research d.e to the inherent rich variab.lity of particle *** this stud.,b.sed.on the acquisition of three-d.mensional(3d.aggregate shapes b. using laser scanning,ellipsoid.ind.x(Ed.)translating the particle shape as a function of surface area,volume,and.contour length is proposed.to comprehensively evaluate aggregate ***,a particle lib.ary capab.e of characterizing aggregate morphology d.strib.tion is estab.ished.b.sed.on the statistics of the correspond.ng morphological characteristics of particle *** mod.l reliab.lity is valid.ted.b. carrying out a series of experimental and.numerical penetration tests with nine d.fferent *** estab.ished.particle lib.ary can b. used.to mod.l aggregate mixtures and.the proposed.simulation framework is promising for optimizing the mixture grad.tion d.sign numerically.

关键词： Particle lib.ary d.screte element method 3d.laser scanning Coarse aggregate Morphology characterization Grad.tion d.sign

Numerical Simulation of the Settling Flux of b.od.position in a b.y with Cage Culture Through Similarity Theory and.a Simplified.Pollution Source

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Journal of Ocean University of China 2024年第1期23卷 247-254页

作者： LIU Yao CHEN Yifan ge Changzi Marine College Shandong UniversityWeihai 264209China

The settling flux of b.od.position affects the environmental quality of cage culture areas and.d.termines their environmental carrying *** and.effective simulation of the settling flux of b.od.position is extremely important for d.termining the spatial d.strib.tion of ***,b.od.position in cage culture areas without specific emission rules can b. simplified.as point source *** is a fluid.simulation software that can simulate the d.spersion of particulate matter simply and.*** on the simplification of pollution sources and.b.ys,the settling flux of b.od.position can b. easily and.effectively simulated.b. Fluent fluid.*** the present work,the feasib.lity of this method.was evaluated.b. simulation of the settling flux of b.od.position in Maniao b.y,Hainan Province,China,and.20 sampling sites were selected.for d.termining the settling *** sampling sites P1,P2,P3,P4,P5,Z1,Z2,Z3,Z4,A1,A2,A3,A4,b.,b.,C1,C2,C3 and.C4,the measured.settling fluxes of b.od.position were 26.02,15.78,10.77,58.16,6.57,72.17,12.37,12.11,106.64,150.96,22.59,11.41,18.03,7.90,19.23,7.06,11.84,5.19 and.2.57 g d.(−1)m^(−2),*** simulated.settling fluxes of b.od.position at the correspond.ng sites were 16.03,23.98,8.87,46.90,4.52,104.77,16.03,8.35,180.83,213.06,39.10,17.47,20.98,9.78,23.25,7.84,15.90,6.06 and.1.65 g d.(−1)m^(−2),*** was a positive correlation b.tween the simulated.settling fluxes and.measured.ones(R=0.94,P=2.22×10^(−9)d.fferentiation of b.od.position flux was well ***,the posterior d.fference ratio of the simulation was 0.38,and.the small error prob.b.lity was 0.94,which means that the simulated.results reached.an acceptab.e level from the perspective of relative ***,if nonpoint source pollution is simplified.to point source pollution and.open waters are simplified.b.sed.on similarity theory,the setting flux of b.od.position i

关键词： fluent fluid.simulation software pollution source simplification posterior d.fference ratio similarity theory Spear-man correlation

Preparation and.performance of novel magnetic phase-change-microcapsule-supported.b._(2)WO_(6)catalyst

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Chinese Chemical Letters 2024年第3期35卷 158-161页

作者： Zhuoni Jiang Zhiqing ge Shuo Yan Jingjing Shu Mozhen Wang Xuewu ge Key Lab.ratory of Precision and.Intelligent Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China School of Materials Science and.Engineering Southwest University of Science and TechnologyMianyang 621010China

The d.sign and.synthesis of novel photocatalyst with self-temperature control function is an important topic in the field.of ad.anced.environmental functional *** this work,sub.icron-sized.magnetic phase change microcapsules composed.of paraffin core and.Fe_(3)O_(4)-load.d.silica shell are prepared.on which the b._(2)WO_(6)crystals is grown in situ through hyd.othermal reaction to ob.ain novel magnetic phase-change-microcapsule-supported.b._(2)WO_(6)catalyst(MP@FS/b.O).The MP@FS/b.O has a paraffin encapsulation ratio of 57.1%,and.the phase change enthalpy of 105.1 J/g in a temperature range of 50–60℃,which end.ws the MP@FS/b.O with a certain self-temperature regulation ***@FS/b.O shows excellent catalytic performance in the d.composition of rhod.mine b.und.r the simulated.sunlight *** the light source is turned.off,it still has good.catalytic ab.lity b. maintaining high temperature d.e to its temperature control function b.sed.on the phase transition *** MP@FS/b.O can b. easily recycled.b. magnetic separation and.shows good.structural stab.lity and.*** work provid.s a new id.a for the d.velopment of long-effect and.energy-saving outd.or photocatalysts.

关键词： Photocatalyst Phase change microcapsules Self-temperature regulation b.smuth tungstate Magnetic separation

Air purifier or fresh air system? A comparison of energy consumption and.cost in urb.n China resid.ntial b.ild.ngs

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Science China Technological Sciences 2024年第9期67卷 2637-2647页

作者： GUO Yong SUN ZhiWei WESCHLER Louise b. ZHANG YinPing department of b.ild.ng Science Tsinghua University b.ijing Key Lab.ratory of Ind.or Air Quality Evaluation and.Control Ind.pend.nt Researcher

Chinese urb.n resid.ntial b.ild.ngs face serious ind.or air quality prob.ems. Air purification systems(e.g., air purifiers, fresh air systems) that supply fresh air or purify ind.or air are wid.ly used.in resid.ntial b.ild.ngs to improve ind.or air *** the challenges of energy conservation and.emission red.ction, it is urgent to guid. resid.nts on choosing appropriate air purification systems. The key prob.em is how to id.ntify the b.st air purification system with the lowest energy consumption or operating cost. Comparisons of air purification systems have rarely b.en cond.cted.on the premise that they should.d.liver air such that the main ind.or pollutant concentrations all meet air quality stand.rd.. Also ignored.in comparisons are the increased.filtration resistance caused.b. d.st accumulation on the filter and.the cost of filter replacement. In this stud., we propose a method.to compare resid.ntial air purification systems b.sed.on energy consumption and.total cost, and.we provid. method. to select air purification systems in China's d.fferent climatic regions. We used.a stand.rd.two-person b.d.oom as the example, and.d.termined.the most suitab.e(minimum cost or energy consumption) air purification systems for the capital cities of the provinces in Chinese mainland.

关键词： IAQ fresh air system air purifier energy consumption cost

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Efficiency of Legumes in Increasing Yam Yield.und.r Sand. Ferrasol in the Forest Zone of Southwestern Côte d.#8217;Ivoire

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Open Journal of Soil Science 2024年第4期14卷 227-236页

作者： germaine A. Tanoh Félix b. O. b.uad.u Jean b.ptiste d. Ettien department of Soil Sciences Water and Geomaterials University of Felix Houphou&#235t Boigny Abidjan C&#244te d&#8217Ivoire department of Food.Security and.Nutrition Swiss Center for Scientific Research in C&#244te d&#8217Ivoire Abidjan C&#244te d&#8217Ivoire

The cropping system is b.sed.on trad.tional farming in rural areas. In this way, yield. of some food.crops like yam are very low consid.ring their high need.for nutrients. The nutrient-rich land.is und.r high land.pressure as it is occupied.b. cash crops such as oil palm and.rub.er at the expense of food.crops and.soil fertility is d.clining. The stud. was cond.cted.in Grand.Lahou to assess the effect of organic matter provid.d.b. legumes in increasing yam yield. The rand.mized.complete b.ock d.sign includ.d.four (4) treatments: Arachis hypogaea + yam association (T1), Acacia mangium + yam association (T2), Arachis + Acacia mangium + yam association (T3) and.pure yam crop (T0). The parameters measured.were: the soil nutrients content, the rate of mineralization of organic matter through the C/N ratio as well as the yield.of yam through d.fferent techniques that allowed.the ob.ective of the stud. to b. achieved. It was noted.a slight improvement of nitrogen and.organic carb.n in all treatments with a higher value record.d.in the T2 treatment. The C/N ratio d.creased.to 12 in all treatments compared.to the control, which reflects a normal d.composition of the organic matter. Treatment T1 increased.yam yield.(8.4 t/ha) in contrast to treatments T2 (4.1 t/ha) and.T3 (2.8 t/ha). Legume-b.sed.treatments T2 and.T3 were associated.with a significant d.crease in yam yield. resulting in losses of −46.34% to −25.09%, while treatment T1 resulted.in a gain of 28.57%. As a result, the treatments involving legumes contrib.ted.to normalizing the organic matter content of the soil. The simultaneous association of these two legumes led.to a d.crease in yam prod.ction, contrary to the treatment associating only ground.ut.

关键词： Legumes Organic Matter Yam Yield Côte d.Ivoire

Cascad.ng multi-segment rupture process of the 2023 Turkish earthquake d.ub.et on a complex fault system revealed.b. teleseismic P wave b.ck projection method

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Earthquake Science 2024年第2期37卷 158-173页

作者： b.nan Cao Zengxi ge department of geophysics School of Earth and Space SciencesPeking UniversityBeijing 100871China Heb.i Hongshan National geophysical Ob.ervatory for Thick Sed.ments and.Seismic Hazard. Peking UniversityBeijing 100871China

In this stud.,the vertical components of b.oad.and.teleseismic P wave d.ta record.d.b. China Earthquake Network are used.to image the rupture processes of the Feb.uary 6th,2023 Turkish earthquake d.ub.et via b.ck projection *** in two frequency b.nd.(0.5-2 Hz and.1-3 Hz)are used.in the imaging *** results show that the rupture of the first event extend. ab.ut 200 km to the northeast and.ab.ut 150 km to the southwest,lasting~90 s in *** southwestern rupture is triggered.b. the northeastern rupture,d.monstrating a sequential b.d.rectional unilateral rupture *** rupture of the second.event extend. approximately 80 km in b.th northeast and.west d.rections,lasting~35 s in total and.d.monstrates a typical b.lateral rupture *** cascad.ng ruptures on b.th sid.s also reflect the occurrence of selective rupture b.haviors on b.furcated.*** ad.ition,we ob.erve super-shear ruptures on certain fault sections with relatively straight fault structures and.sparse aftershocks.

关键词： 2023 Turkish earthquake d.ub.et b.ck projection method cascad.ng segmented.rupture process coseismic triggering super-shear ruptures

Exercise-ind.ced.ad.ptation of neurons in the verteb.ate locomotor system

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Journal of Sport and.Health Science 2024年第2期13卷 160-171页

作者： Yue d.i Yi Cheng Renkai ge Ke Chen Liming Yang Key Lab.of Ad.lescent Health Assessment and.Exercise Intervention of Ministry of Ed.cation College of Physical Education and Health CareEast China Normal UniversityShanghai 200241China Shanghai Key Lab.ratory of Multid.mensional Information Processing School of Communication and Electronic EngineeringEast China Normal UniversityShanghai 200241China School of Physical Ed.cation and.Health Care East China Jiaotong UniversityNanchang 330013China Key Lab.ratory of High Confid.nce Software Technologies of Ministry of Ed.cation School of Computer SciencePeking UniversityBeijing 100871China

Verteb.ate neurons are highly d.namic cells that und.rgo several alterations in their functioning and.physiologies in ad.ptation to various external *** particular,how these neurons respond.to physical exercise has long b.en an area of active *** of the verteb.ate locomotor system’s ad.ptab.lity suggest multiple mechanisms are involved.in the regulation of neuronal activity and.properties d.ring *** this b.ief review,we highlight recent results and.insights from the field.with a focus on the following mechanisms:(a)alterations in neuronal excitab.lity d.ring acute exercise;(b.alterations in neuronal excitab.lity after chronic exercise;(c)exercise-ind.ced.changes in neuronal memb.ane properties via mod.lation of ion channel activity;(d.exercise-enhanced.d.nd.itic plasticity;and.e)exercise-ind.ced.alterations in neuronal gene expression and.protein *** hope is to upd.te the community with a cellular and.molecular und.rstand.ng of the recent mechanisms und.rlying the ad.ptab.lity of the verteb.ate locomotor system in response to b.th acute and.chronic physical exercise.

关键词： d.nd.itic plasticity Excitab.lity Exercise Ion channel mod.lation Neuron ad.ptation

NIR-IIb.triggered.photod.namic therapy comb.ned.with chemotherapy platform b.sed.on rare-earth-d.ped.nanoparticles

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Rare Metals 2024年第7期43卷 3220-3231页

作者： Zhuo Tu Yong Wan Juan ge Chen-Chen Li Tao Liang Zhen Li Chemistry and.Chemical Engineering Hubei UniversityWuhan 430062China

Photod.namic therapy(Pd.),with high spatiotemporal selectivity,minimal sid. effects and.less d.ug resistance,has emerged.as a promising approach for the treatment of ***,inad.quate penetration d.pth and.poor efficacy seriously restrict its practical *** ad.ress these challenges,we d.veloped.a comb.ned.therapy platform(RENP@C/d.FA)b.sed.on rare-earth-d.ped.nanoparticles(RENPs)with a structure of NaErF_(4):Tm(0.5%)@NaYF_(4),on which photosensitizer Ce6(chlorin e6)and.chemo-therapeutic d.ug(d.X)(d.xorub.cin)were load.d.b. encapsulating with an amphiphilic polymer d.stearoyl phosphatid.lethanolamine-polyethylene glycol-folic acid.d.PE-PEG-FA).RENPs with NaErF_(4) as the matrix possess multiple excitation/emission peaks,enab.ing activation of Pd. und.r near-infrared.Ⅱb.NIR-Ⅱb.1500-1700 nm)excitation and.luminescence imaging in NIR-Ⅱb.region b. ab.orb.ng 808 nm near-infrared.***,d.X can b. selectively released.in the acid.c microenvironment of *** from the tumor targeting capab.lity of folic acid.this platform can successfully ab.ate tumor cells and.inhib.t tumor growth b. comb.ning Pd. and.*** innovative approach hold. great promise as a powerful tool for cancer treatment,showing the potential to revolutionize Pd..

关键词： Photod.namic therapy Rare-earth-d.ped.nanoparticles NIR-IIb Chemotherapy Comb.ned.therapy