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combined Effect of Outdoor Time and Other Modifiable Factors on Myopia Incidence Among children and Adolescents—9 PLADs,china,2020

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china cDc weekly 2024年第9期6卷 151-156,I0001,I0002页

作者： Panliang Zhong Yunfei Liu Ning ma Jiajia Dang Di Shi Shan cai Ziyue chen Yanhui Dong Peijin Hu Jun ma Patrick W.c Lau Randall S.Stafford Yi Song Institute of child and Adolescent Health School of Public HealthPeking UniversityNational Health Commission Key Laboratory of Reproductive HealthBeijingChina Department of Sport Physical Education&HealthHong Kong Baptist UniversityKowloon TongHong Kong Special Administrative RegionChina Department of Medicine Stanford Prevention Research CenterStanford University School of MedicineStanfordCAUnited States

Summary What is already known about this topic?Myopia has been identified as a significant emerging challenge and policy priority among children and adolescents in china by the Ministry of Education and seven other *** research has been conducted to investigate the collective impact of outdoor time and other modifiable factors on the incidence of myopia.

关键词： Incidence collective policy

Testing Bell inequality through h→ττ at cEPc

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chinese Physics c 2024年第10期48卷 59-71页

作者： Kai ma Tong Li Faculty of Science Xi'an University of Architecture and TechnologyXi'an 710055China School of Physics Nankai UniversityTianjin 300071China

The decay of Higgs boson into two spin-1/2 particles provides an ideal system to reveal quantum entanglement and *** e^(+)e^(-) colliders can improve the measurement accuracy of the spin correlation of tau lepton pairs from Higgs boson *** show the testability of Bell inequality through h→ττ at circular Electron Positron collider(cEPc).Two realistic methods of testing Bell inequality are investigated,i.e.,Törnqvist's method and clauser-Home-Shimony-Holt(cHSH)*** the simulation,we consider the detector effects of cEPc including uncertainties for tracks and jets from Z boson in the production of e^(+)e^(-)→*** reconstruction approaches are described to measure quantum entanglement between τ^(+) and τ^(-).Finally,we show the sensitivity of cEPc to Bell inequality violation for the two methods.

关键词： Bell inequality Higgs boson cEPc

Alloy/layer double hydroxide interphasic synergy via nano-heterointerfacing for highly reversible cO_(2)redox reaction in Li-cO_(2)batteries

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Nano Research 2024年第6期17卷 5206-5215页

作者： Tianzhen Jian Wenqing ma Jiagang Hou Jianping ma Xianhong Li Haiyang Gao caixia Xu Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongSchool of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022China Kyiv college at Qilu University of Technology Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China State Key Laboratory of crystal materials Shandong UniversityJinan 250100China Shandong Sacred Sun Power Sources co. Ltd.Qufu 273100China

Li-cO_(2)batteries are among the most intriguing techniques for balancing the carbon cycle,but are challenged by the annoyed thermodynamic barrier of the Li_(2)cO_(3)decomposition ***,we demonstrate the electrocatalytic performances of two-dimensional(2D)coAl-layer double hydroxide(LDH)nanosheets can be significantly improved by trans-dimensional crosslinking with three-dimensional(3D)multilevel nanoporous(MP)-RucoAl alloy(MP-RucoAl alloy⊥coAl-LDH).The MP-RucoAl alloy⊥coAl-LDH with multiscale pore channels and abundant nano-heterointerface is directly prepared by controllable etching Al from a Ru-co-Al master alloy along with simultaneous partial oxidization of Al and co *** MP-RucoAl is composed of various intermetallic compounds and Ru with abundant grain boundaries,and forms numerous heterointerface with 2D coAl-LDH *** multiscale porous metallic network benefits mass and electron transportation as well as discharge product storage and enables a rich multiphase reaction *** situ differential electrochemical mass spectrometry shows that the mass-to-charge ratio in the charging process is~0.733 which is consistent with the theoretical value of 3/4,stating that the reversible co-decomposition of Li_(2)cO_(3)and c can be achieved with the MP-RucoAl alloy⊥*** Ketjen black(KB)/MP-RucoAl⊥coAl-LDH battery demonstrates a high cyclability for over 2270 h(227 cycles)with a lower voltage gap stabilized at~1.3 V at 200 ma·g^(−1).Our findings here provide useful guidelines for developing high efficiency transition metal based electrocatalysts by coupling with conductive porous substrate for impelling the development of practical Li-cO_(2)battery systems.

关键词： heterojunction interface nanoporous Li-cO_(2)battery dealloying

Integration of earth-abundant cocatalysts for high-performance photoelectrochemical energy conversion

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Journal of Energy chemistry 2024年第1期88卷 336-355,I0008页

作者： Joonhee ma Sang Hyun Ahn Soo Young Kim Department of materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea School of chemical Engineering and materials Science Chung-Ang University84 Heukseok-roDongjak-guSeoul 06974Republic of Korea

Photoelectrochemical(PEc)energy conversion has emerged as a promising and efficient approach to sustainable energy harvesting and *** utilizing semiconductor photoelectrodes,PEc devices can harness solar energy and drive electrochemical reactions such as water splitting or carbon dioxide(cO_(2))reduction to generate clean fuels and value-added ***,PEc energy conversion faces several challenges such as high overpotential,sluggish reaction kinetics,charge carrier recombination,and stability issues,which limit its practical ***,significant research has been conducted to improve the overall conversion efficiency of PEc *** particularly promising approach is the use of cocatalysts,which involves introducing specific cocatalysts onto the photoelectrode surface to promote charge separation,improve reaction kinetics,and reduce the overpotential,thereby enhancing the overall performance of PEc energy *** review provides a comprehensive overview of the recent developments in the earth-abundant cocatalysts for PEc water splitting and cO_(2) *** main earth-abundant catalysts for the PEc water splitting include transition-metal dichalcogenide(TMD)-based materials,metal phosphides/carbides,and metal oxides/***,PEc-cO_(2)RR was divided into c_(1) and c_(2+)based on the final product since various products could be produced,focusing on diverse earth-abundant materials-based *** addition,we provide and highlight key advancements achieved in the very recent reports on novel PEc system design engineering with ***,the current problems associated with PEc systems are discussed along with a suggested direction to overcome these obstacles.

关键词： Solar energy Photo-electrochemical Water splitting cO_(2)reduction cocatalysts

Preparation of K-doped g-c_(3)N_(4) composite loaded on magnetic attapulgite and its degradation performance for malachite green

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chinese Journal of chemical Engineering 2024年第7期71卷 110-121页

作者： Aishun ma Hanlin Qian Hongxia Liu Sili Ren Jiangxi Key Laboratory of Mining&Metallurgy Environmental Pollution control Jiangxi University of Science and TechnologyGanzhou 341000China Jiangxi Provincial Key Laboratory of Low-carbon Processing and Utilization of Strategic Metal Mineral Resources Jiangxi University of Science and TechnologyGanzhou 341000China

Visible-light-driven photocatalysis is a promising technology for the treatment of dye *** this work,a novel photocatalyst of K-doped g-c_(3)N_(4) loaded on magnetic attapulgite(ATP)(Kω-g-c_(3)N_(4)@ATP-Fe_(3)O_(4))with excellent visible light photocatalytic properties and stability were successfully prepared and *** removal efficiency of Kω-g-c_(3)N_(4)@ATP-Fe_(3)O_(4) for malachite green(MG)was studied,and the degradation mechanism was analyzed and *** was found that the K_(5)-g-c_(3)N_(4)@ATP-Fe_(3)O_(4) photocatalyst possessed excellent degradation efficiency of over 98.0%for the MG dye wastewater under optimal ***,the K_(5)-g-c_(3)N_(4)@ATP-Fe_(3)O_(4) materials possessed good recyclability with a removal rate over 82%after 4 *** visible light condition,the K_(5)-g-c_(3)N_(4)@ATP-Fe_(3)O_(4) photocatalyst produce radicals of·OH and O_(2)^(-)to degrade the MG dyes,which was supported by electron paramagnetic resonance(EPR)and radical trapping *** addition,the Lc-MS analysis interpreted the degradation pathways and intermediates of MG in the *** findings in this work indicate that the prepared photocatalytic material has excellent degradation efficiency for MG and can be applied in dye wastewater treatment.

关键词： Photocatalyst malachite green K-doped g-c_(3)N_(4) Degradation

Metallurgical performance evaluation of space-weathered chang’e-5 lunar soil

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International Journal of Minerals,Metallurgy and materials 2024年第6期31卷 1241-1248页

作者： chen Li Wenhui ma Yang Li Kuixian Wei center for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China

Space metallurgy is an interdisciplinary field that combines planetary space science and metallurgical *** involves systematic and theoretical engineering technology for utilizing planetary resources in ***,space metallurgy on the Moon is challenging because the lunar surface has experienced space weathering due to the lack of atmosphere and magnetic field,making the mi-crostructure of lunar soil differ from that of minerals on the *** this study,scanning electron microscopy and transmission electron microscopy analyses were performed on chang’e-5 powder lunar soil *** microstructural characteristics of the lunar soil may drastically change its metallurgical *** main special structure of lunar soil minerals include the nanophase iron formed by the impact of micrometeorites,the amorphous layer caused by solar wind injection,and radiation tracks modified by high-energy particle rays inside mineral *** nanophase iron presents a wide distribution,which may have a great impact on the electromagnetic prop-erties of lunar *** ions injected by solar wind may promote the hydrogen reduction *** widely distributed amorph-ous layer and impact glass can promote the melting and diffusion process of lunar ***,although high-energy events on the lun-ar surface transform the lunar soil,they also increase the chemical activity of the lunar *** is a property that earth samples and tradi-tional simulated lunar soil *** application of space metallurgy requires comprehensive consideration of the unique physical and chemical properties of lunar soil.

关键词： space metallurgy chang’e-5 lunar soil space weathering metallurgical performance

Enhanced properties of stone coal-based composite phase change materials for thermal energy storage

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International Journal of Minerals,Metallurgy and materials 2024年第1期31卷 206-215页

作者： Baoshan Xie Huan ma chuanchang Li Jian chen Key Laboratory of Renewable Energy Electric-Technology of Hunan Province School of Energy and Power EngineeringChangsha University of Science and TechnologyChangsha 410114China State Key Laboratory of Disaster Prevention and Reduction for Power Grid Changsha University of Science and TechnologyChangsha 410114China

Phase change materials (PcMs) can be incorporated with low-cost minerals to synthesize composites for thermal energy storage in building *** coal (Sc) after vanadium extraction treatment shows potential for secondary utilization in composite *** prepared Sc-based composite PcMs with Sc as a matrix,stearic acid (SA) as a PcM,and expanded graphite (EG) as an *** combined roasting and acid leaching treatment of raw Sc was conducted to understand the effect of vanadium extraction on promoting loading *** showed that the combined treatment of roasting at 900℃ and leaching increased the Sc loading of the composite by 6.2%by improving the specific surface *** loading capacity and thermal conductivity of the composite obviously increased by 127%and 48.19%,respectively,due to the contribution of 3wt% *** data were supported by the high load of 66.69%and thermal conductivity of 0.59 W·m^(-1)·K-1of the designed *** obtained composite exhibited a phase change temperature of 52.17℃,melting latent heat of 121.5 J·g^(-1),and good chemical *** Sc-based composite has prospects in building applications exploiting the secondary utilization of minerals.

关键词： thermal energy storage phase change material stone coal vanadium extraction secondary utilization

On hypersurfaces of H2×H2

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Science china mathematics 2024年第2期67卷 339-366页

作者： Dong Gao Hui ma Zeke Yao School of Science Beijing University of Civil Engineering and Architecture Department of mathematical Sciences Tsinghua University

In this paper, we study hypersurfaces of H2× H2. We first classify the hypersurfaces with constant principal curvatures and constant product angle functions. Then we classify homogeneous hypersurfaces and isoparametric hypersurfaces, respectively. Finally, we classify the hypersurfaces with at most two distinct constant principal curvatures, as well as those with three distinct constant principal curvatures under some additional conditions.

关键词： constant principal curvature homogeneous hypersurface isoparametric hypersurface 53c42 53B25 53c40

characterization of Arroyo Verde Epithermal Deposit:Paragenesis,Mineral Geochemistry,Geochronology and Fluid Inclusions in Lower chon Aike Volcanism,Argentina

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Journal of Earth Science 2024年第1期35卷 62-84页

作者： cecilia Pavón Pivetta Leonardo Benedini Paulo marcos ma.Agustina cócola Mercedes Virginia Barros Daniel Gregori Leonardo Strazzere Anderson costa dos Santos mauro c.Geraldes Instituto Geologico del Sur(INGEOSUR) Universidad Nacional del Sur(UNS)-Consejo Nacional de Investigaciones Cientificas y Tecnicas(CONICET)Bahia Blanca 8000Argentina Dpto.de Geologia Universidad Nacional del Sur(UNS)Bahia Blanca 8000Argentina Universidad Nacional de Rio Negro Instituto de Investigacion en Paleobiologia y GeologiaGeneral Roca 8332Argentina Universidade do Estado do Rio de Janeiro Faculdade de GeologiaDepartamento de Mineralogia e Petrologia igneaRiodeJaneiro20559-900Brazil Geobiotec Departamento de GeocienciasUniversidade de AveiroAveiro 3800-002Portuga

Arroyo Verde epithermal deposit,in the North Patagonia region of Argentina,is located within the Lower chon Aike volcanism and is developed between 192.6±2.5 ma(mineralization host rock)and 189.5±2.6 ma(overlying lava).marifil volcanic complex is the host rock for these veins,veinlets and *** particular small deposit has developed low to intermediate sulphidation characteristics,with gangue mineral textures associated with several ore *** probe microanalysis determines electrum,silver minerals such as acanthite,and tetrahedrite,related Ag-cu minerals like jalpaite,mckinstryite,stromeyerite,and base metals like chalcopyrite,sphalerite,galena and *** inclusions in quartz of two out of five events indicate that these Low Jurassic veins were formed due to subtle boiling and dilution mechanisms and by low-salinity(3.4 wt.%to 6.7 wt.%Nacl Eq)magmatic-hydrothermal fluid at 225 to 310℃.The fluid inclusion measurements that indicate boiling(Event 3)were plotted,and based on this data,we interpret that the Arroyo Verde deposit has been eroded between 550 and 700 *** particular character has not been previously recorded for other sectors of the eastern north Patagonian region.

关键词： epithermal deposit Ag minerals mineral geochemistry fluid inclusions chon Aike geochronology