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Predicting the Risk of Arterial Stiffness in Coal Miners Based on Different Machine Learning Models

Biomedical and environmental sciences 2024年第1期37卷 108-111页

作者： CHEN Qian Wei HUANG Xue Zan DING Yu ZHU Feng Ren WANG Jia ZOU Yuan Jie DU Yuan Zhen ZHANG Ya Jun HUI Zi Wen ZHU Feng Lin MU Min The Project was supported by Open Research Grant of Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining Anhui University of Science and TechnologyHefei 232001AnhuiChina School of Public Health Anhui University of Science and TechnologyHefei 232001AnhuiChina Key Laboratory of Industrial Dust Prevention and Control Occupational Safety and HealthMinistry of EducationAnhui University of Science and TechnologyHefei 232001AnhuiChina Anhui Institute of Occupational Safety and Health Anhui University of Science and TechnologyHefei 232001AnhuiChina Joint Research Center of Occupational Medicine and Health Institute of Grand HealthHefei Comprehensive National Science CenterAnhui University of Science and TechnologyHefei 232001AnhuiChina Department of Occupational&Environmental Health School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030HubeiChina Key Laboratory of Environment and Health Ministry of Education&Ministry of Environmental Protectionand State Key Laboratory of Environmental Health(Incubating)School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030HubeiChina

Coal is one of the world’s main energy resources,accounting for approximately 68%of China’s current total power ***,several studies have demonstrated that dust,exhaust fumes,and other harmful factors in coal mines increase the risk of cardiovascular disease(CVD)among miners^([1]).Arterial stiffness(AS)is an independent risk factor of CVD,and epidemiological studies have shown that AS plays a vital role in assessing the risk of CVD^([2]).

关键词： Arterial cardiovascular assessing

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4‑Terminal Inorganic Perovskite/Organic Tandem Solar Cells Offer 22%Efficiency

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Nano-Micro Letters 2023年第2期15卷 172-181页

作者： Ling Liu Hanrui Xiao Ke Jin Zuo Xiao Xiaoyan Du keyou Yan Feng Hao Qinye Bao Chenyi Yi Fangyang Liu Wentao Wang Chuantian Zuo Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China School of Metallurgy and Environment Central South UniversityChangsha 410083People’s Republic of China School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100People’s Republic of China School of Environment and Energy South China University of TechnologyGuangzhou 510000People’s Republic of China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China School of Physics and Electronic Science East China Normal UniversityShanghai 200241People’s Republic of China State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijing 100084People’s Republic of China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083People’s Republic of China

After fast developing of single-junction perovskite solar cells and organic solar cells in the past 10 years,it is becoming harder and harder to improve their power conversion *** solar cells are receiving more and more attention because they have much higher theoretical efficiency than single-junction solar *** device performance has been achieved for perovskite/silicon and perovskite/perovskite tandem solar cells,including 2-terminal and 4-terminal ***,very few studies have been done about 4-terminal inorganic perovskite/organic tandem solar *** this work,semi-transparent inorganic perovskite solar cells and organic solar cells are used to fabricate 4-terminal inorganic perovskite/organic tandem solar cells,achieving a power conversion efficiency of 21.25%for the tandem cells with spin-coated perovskite *** using drop-coating instead of spin-coating to make the inorganic perovskite films,4-terminal tandem cells with an efficiency of 22.34%are *** efficiency is higher than the reported 2-terminal and 4-terminal inorganic perovskite/organic tandem solar *** addition,equivalent 2-terminal tandem solar cells were fabricated by connecting the sub-cells in *** stability of organic solar cells under continuous illumination is improved by using semi-transparent perovskite solar cells as filter.

关键词： 4-Terminal tandem solar cells Inorganic perovskite solar cells Organic solar cells Semitransparent Drop-coating

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Dual Charge-Transfer Channels Harmonize Carrier Separation for Efficient U(VI) Photoreduction

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Inorganic Chemistry 2023年第11期62卷 4705-4715页

作者： He, Pan Zhang, Ling Xiao, Shunhong Jiang, Wenyi Wu, Yiquan Yan, Chenhui Li, Xiaoan Chen, Zhengguo Wu, Linzhen Duan, Tao State Key Laboratory of Environment-friendly Energy Materials National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety Southwest University of Science and Technology Sichuan Mianyang621010 China NHC Key Laboratory of Nuclear Technology Medical Transformation Mianyang Central Hospital Sichuan Mianyang621099 China Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics Sichuan Mianyang621900 China

The low efficient transfer of photogenerated electrons to an active catalytic site is a pivotal problem for the photoreduction of highly soluble hexavalent uranium [U(VI)] to low soluble tetravalent uranium [U(IV)]. Herein, we successfully synthesized a TiO2-x/1T-MoS2/reduced graphene oxide heterojunction (T2-xTMR) with dual charge-transfer channels by exploiting the difference in Fermi levels between the heterojunction interfaces, which induced multilevel separation of photogenerated carriers. Theoretical and experimental results demonstrate that the presence of the electron buffer layer promoted the efficient migration of photogenerated electrons between the dual charge-transfer channels, which achieved effective separation of photogenerated carriers in physical/spatial dimensions and significantly extended the lifetime of photogenerated electrons. The migration of photogenerated electrons to the active catalytic site after multilevel spatial separation enabled the T2-xTMR dual co-photocatalyst to remove 97.4% of the high concentration of U(VI) from the liquid-phase system within 80 min. This work provides a practical reference for utilizing multiple co-catalysts to accomplish directed spatial separation of photogenerated carriers. © 2023 American Chemical Society.

关键词： Charge transfer

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Research on a Composite Biomass Insulation Material with Geopolymers as Binders and Forestry Waste as Fillers

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Journal of Thermal science 2022年第2期31卷 590-605页

作者： LI Hongqiang ZOU Si LIU Tiantian WANG Shuang ZOU Jun ZHANG Xiaofeng LIU Lifang BAI Chengying ZHANG Guoqiang College of Civil Engineering Hunan UniversityChangsha 410082China National Center for International Research Collaboration in Building Safety and Environment(NCIRCBSE) Hunan UniversityChangsha 410082China Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education Hunan UniversityChangsha 410082China State Key Laboratory of Plant Physiology and Biochemistry China Agricultural UniversityBeijing 100193China College of Energy and Power Engineering Changsha University of Science and TechnologyChangsha 410114China College of Civil Engineering Hunan University of Science and TechnologyXiangtan 411201China Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China

A composite biomass insulation material,which uses geopolymers as adhesives and forestry waste as fillers,was proposed and experimentally *** orthogonal experimental method was adopted to analyze the optimum theoretical oxide molar ratios and the mass ratio of mixing water to binder(m_(w2)/m__(B))for preparing *** influences of curing regimes(including one-stage and two-stage curing methods)and m_(w2)/m_(B) ratios of the insulation materials on mechanical,thermal,and hydraulic performances were also studied by *** results indicated that the optimum combination scheme of preparing geopolymers was molar ratio x_(SiO_(2))/x_(Na_(2)O)=3.3,x_(SiO_(2))/x_(Al_(2)O_(3))=3.2 and m_(w2)/m_(B)=0.5 with the highest mechanical strength of 34.21 ***,the best curing conditions of the composite material were the curing temperatures of 85°C and 70°C under the two-stage curing regime,which could achieve the low heat conductivity of 0.123 and 0.125 W/(m·K),and the high mechanical strength of 1.70 MPa and 1.71 MPa,*** optimum m_(w2)/m_(B)ratios of the biomass material were 0.5 to 0.55 with heat conductivity of 0.114 to 0.125 W/(m·K).This novel composite insulation material has satisfying physical performances,which is helpful for achieving building energy conservation.

关键词： sawdust forestry waste energy conservation prefabricated buildings composite biomass insulation materials

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A possible atmospheric source of HNO₃: the ammonolysis reaction of t-N₂O₄ in the presence of water monomer, water dimer, and sulfuric acid

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environmental science: Atmospheres 2023年第10期3卷 1407-1417页

作者： Mu, Ruxue Zhou, Weixin Hong, Zhaozhao Wang, Rui Liu, Quan Zhang, Qiang Jiang, Min Muthiah, Balaganesh Zhang, Tianlei Institute of Theoretical and Computational Chemistry Shaanxi Key Laboratory of Catalysis School of Chemical & Environment Science Shaanxi University of Technology Shaanxi Hanzhong 723000 China Department of Chemical Engineering National Taiwan University Taipei 106 Taiwan

Although the ammonolysis of t-N2O4 is one of the potential sources of HNO3 formation, the available studies have only focused on its naked reaction. Herein, the effect of important neutral and acidic trace gases, wate...

Although the ammonolysis of t-N₂O₄ is one of the potential sources of HNO₃ formation, the available studies have only focused on its naked reaction. Herein, the effect of important neutral and acidic trace gases, water monomer, water dimer, and sulfuric acid, on the formation of HNO₃ from the ammonolysis of t-N₂O₄ was studied by the quantum chemical method of CCSD(T)/aug-cc-pVTZ//B3LYP-D3/6-311++G(3df,2pd) and the Master equation/Rice-Ramsperger-Kassel-Marcus (ME/RRKM) rate calculations. The quantum chemical results revealed that the ammonolysis of t-N₂O₄ with (H₂O)₂ and H₂SO₄ are barrierless or nearly barrierless reactions, potentially lowering the energy barrier to 3.4-4.1 kcal mol⁻¹. The calculated effective rate constant illustrates that (H₂O)₂ (100% RH) dominates over H₂O and H₂SO₄ within the range of 280-320 K (0 km), with an effective rate constant that is 1-3 orders of larger magnitude, whereas H₂SO₄ (10⁸ mol cm⁻³) is the most favorable catalyst within the troposphere between 5 and 30 km. However, the contributions of H₂O, (H₂O)₂, and H₂SO₄ are not apparent in the gas-phase ammonolysis of t-N₂O₄ within the range of 213-320 K and 0-30 km because their effective rate constants were at least 4 orders of magnitude lower than the corresponding rate constant of the ammonolysis of t-N₂O₄. In general, the current findings shed fresh light on neutral (H₂O and (H₂O)₂) and acidic (H₂SO₄) catalysts that not only affect energy barriers but also have an impact on the ammonolysis of t-N₂O₄ in neutral and acidic conditions. © 2023 The Author(s).

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Parameter-Sharing-Based Average-Consensus Time Synchronization in IoT Networks

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IEEE Internet of Things Journal 2023年第9期10卷 8215-8227页

作者： Shi, Fanrong Yang, Simon X. Mukherjee, Mithun Jiang, Hong Da Costa, Daniel Benevides Wong, Wing-Kwong Southwest University of Science and Technology Robot Technology Used for Special Environment Key Laboratory of Sichuan Province School of Information Engineering Mianyang621010 China School of Engineering University of Guelph Advanced Robotics and Intelligent Systems Laboratory GuelphONN1G 2W1 Canada Nanjing University of Information Science and Technology School of Artificial Intelligence School of Future Technology Nanjing210044 China Technology Innovation Institute Abu Dhabi United Arab Emirates National Yunlin University of Science and Technology Future Technology Research Center Douliu64002 Taiwan

Average-consensus protocol is one of the ways to develop distributed time-synchronization algorithms in Internet of Things (IoT) networks. However, the large number of iteration leads to a common time notion issue in nodes. This poses a critical challenge in the convergence of the time-synchronization algorithm and resulting asymptotic convergence in the average consensus protocol. In this article, a parameter-sharing-based average-consensus time-synchronization (PACTS) algorithm is proposed. For fast convergence, the proposed PACTS quickly forwards the time information to multihop nodes and employs multihop average-consensus instead of single-hop average consensus. Specifically, a node asynchronously and periodically broadcasts the relative clock offset estimation of neighbors with its local time information. Meanwhile, the relative clock offset estimation of the multihop node is calculated and used to estimate the average value. Consequently, an average consensus among local multihop nodes is obtained. As a result, the iteration number and convergence time are significantly reduced over the network. Finally, the experimental results indicate that the proposed PACTS algorithm has low complexity, high accuracy, and quick convergence. © 2023 IEEE.

关键词： Topology

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Characterizing PFASs in aquatic ecosystems with 3D hydrodynamic and water quality models

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environmental science and Ecotechnology 2024年第6期22卷 124-134页

作者： Jingjie Zhang Huiting Chen Nguyen Viet Tung Amrita Pal Xuan Wang Hanyu Ju Yiliang He Karina Yew-Hoong Gin State Key Laboratory of Black Soils Conservation and Utilization Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun130102China Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun130102China Department of Civil&Environmental Engineering National University of Singapore117576Singapore National University of Singapore Environmental Research Institute5A Engineering Drive 1117411Singapore Shenzhen Municipal Engineering Lab of Environmental IoT Technologies Southern University of Science and TechnologyShenzhen518055China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai200240China

Understanding how per-and polyfluoroalkyl substances(PFASs)enter aquatic ecosystems is challenging due to the complex interplay of physical,chemical,and biological processes,as well as the influence of hydraulic and hydrological factors and pollution sources at the catchment *** spatiotemporal dynamics of PFASs across various media remain largely *** we show the fate and transport mechanisms of PFASs by integrating monitoring data from an estuarine reservoir in Singapore into a detailed 3D *** model incorporates hydrological,hydrodynamic,and water quality processes to quantify the distributions of total PFASs,including the major components perfluorooctanoate(PFOA)and perfluorooctane sulfonate(PFOS),across water,particulate matter,and sediments within the *** results,validated against four years of field measurements with most relative average deviations below 40%,demonstrate that this integrated approach effectively characterizes the occurrence,sources,sinks,and trends of *** majority of PFASs are found in the dissolved phase(>95%),followed by fractions sorbed to organic particles like detritus(1.0-3.5%)and phytoplankton(1-2%).We also assess the potential risks in both the water column and sediments of the *** risk quotients for PFOS and PFOA are<0.32 and<0.00016,respectively,indicating an acceptable risk level for PFASs in this water *** reservoir also exhibits substantial buffering capacity,even with a tenfold increase in external loading,particularly in managing the risks associated with PFOA compared to *** study not only enhances our understanding of the mechanisms influencing the fate and transport of surfactant contaminants but also establishes a framework for future research to explore how dominant environmental factors and processes can mitigate emerging contaminants in aquatic ecosystems.

关键词： Emerging contaminants(ECs) PFASs PFOA PFOS Fate and transport Integrated modeling Risk assessment

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Striking a growth–defense balance:Stress regulators that function in maize development

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Journal of Integrative Plant Biology 2024年第3期66卷 424-442页

作者： Shiyi Xie Hongbing Luo Wei Huang Weiwei Jin Zhaobin Dong Maize Engineering and Technology Research Center of Hunan Province College of AgronomyHunan Agricultural UniversityChangsha 410128China State Key Laboratory of Maize Bio-breeding National Maize Improvement CenterFrontiers Science Center for Molecular Design BreedingChina Agricultural UniversityBeijing 100193China Tianjin Key Laboratory of Intelligent Breeding of Major Crops Fresh Corn Research Center of BTHCollege of Agronomy&Resources and EnvironmentTianjin Agricultural UniversityTianjin 300384China

Maize(Zea mays)cultivation is strongly affected by both abiotic and biotic stress,leading to reduced growth and *** has recently become clear that regulators of plant stress responses,including the phytohormones abscisic acid(ABA),ethylene(ET),and jasmonic acid(JA),together with reactive oxygen species(ROS),shape plant growth and *** their well established functions in stress responses,these molecules play crucial roles in balancing growth and defense,which must be finely tuned to achieve high yields in crops while maintaining some level of *** this review,we provide an in-depth analysis of recent research on the developmental functions of stress regulators,focusing specifically on *** unraveling the contributions of these regulators to maize development,we present new avenues for enhancing maize cultivation and growth while highlighting the potential risks associated with manipulating stress regulators to enhance grain yields in the face of environmental challenges.

关键词： stress regulators maize development ABA ET JA ROS

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The Mars orbiter magnetometer of Tianwen-1:in-flight performance and first science results

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Earth and Planetary Physics 2023年第2期7卷 216-228页

作者： YuMing Wang TieLong Zhang GuoQiang Wang SuDong Xiao ZhuXuan Zou Long Cheng ZongHao Pan Kai Liu XinJun Hao YiRen Li ManMing Chen ZhouBin Zhang Wei Yan ZhenPeng Su ZhiYong Wu ChengLong Shen YuTian Chi MengJiao Xu JingNan Guo Yang Du School of Earth and Space Sciences/Deep Space Exploration Laboratory University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology/CAS Key Laboratory of Geospace Environment/Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China Space Research Institute Austrian Academy of SciencesGrazAustria Institute of Space Science and Applied Technology Harbin Institute of TechnologyShenzhen 518055China National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230026China Shanghai Institute of Satellite Engineering Shanghai 201109China

The Mars Orbiter MAGnetometer(MOMAG)is a scientific instrument onboard the orbiter of China’s first mission for Mars—*** November 13,2021,it has been recording magnetic field data from the solar wind to the magnetic pile-up region surrounding *** we present its in-flight performance and first science results,based on its first one and one-half months’*** these early MOMAG observations to the magnetic field data in the solar wind from NASA’s Mars Atmosphere and Volatile EvolutioN(MAVEN)mission,we report that the MOMAG magnetic field data are at the same level in magnitude,and describe the same magnetic structures with similar variations in three *** recognize 158 clear bow shock(BS)crossings in these MOMAG data;their locations match well statistically with the modeled average *** also identify and compare five pairs of datasets collected when Tianwen-1’s orbiter and the MAVEN probe made simultaneous BS *** BS crossings confirm the global shape of modeled BS,as well as the south-north asymmetry of the Martian *** cases presented in this paper suggest that the BS is probably more dynamic at flank than near the *** far,MOMAG performs well,and provides accurate magnetic field *** is continuously scanning the magnetic field surrounding *** from MOMAG’s measurements complement data from MAVEN and will undoubt edly advance our understanding of the plasma environment of Mars.

关键词： Mars magnetic field Tianwen-1 magnetometer bow shock

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Submarine groundwater discharge and seasonal hypoxia off the Changjiang River Estuary

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Acta Oceanologica Sinica 2023年第8期42卷 125-133页

作者： Tianyi Zhu Bochao Xu Xiaoyi Guo Qinsheng Wei Ergang Lian Pengxia Liu William C.Burnett Qingzhen Yao Zhigang Yu Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education Ocean University of ChinaQingdao 266100China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China Academy of the Future Ocean Ocean University of ChinaQingdao 266100China Key Laboratory of Marine Eco-Environmental Science and Technology First Institute of OceanographyMinistry of Natural ResourcesQingdao 266100China Research Center for Monitoring and Environmental Sciences Taihu Basin and East China Sea Ecological Environment Supervision and Administration AuthorityMinistry of Ecology and EnvironmentShanghai 200120China State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China Department of Earth Ocean and Atmospheric ScienceFlorida State UniversityTallahassee FL 32306USA

Hypoxia is a common phenomenon in the sea adjacent to the Changjiang River Estuary(CJE),one of the global major *** groundwater discharge(SGD)is a widely recognized pathway for terrestrial materials entering the sea,and has been found to be significant off the *** used a^(222)Rn mass balance model to estimate the SGD fluxes off the CJE and showed that it is linked to seasonal dissolved oxygen(DO)*** SGD fluxes were estimated to be(0.012±0.010)m^(3)/(m^(2)·d)in winter,(0.034±0.015)m^(3)/(m^(2)·d)in summer,and(0.020±0.010)m^(3)/(m^(2)·d)in *** found a significant negative correlation between DO concentrations and SGD rates with groundwater discharge being highest in the summer flood *** addition,distribution patterns of SGD and hypoxia zones in summer are spatially overlapped,indicating that SGD is an important contributor to summer hypoxia in this region.

关键词： submarine groundwater discharge ^(222)Rn hypoxia ^(226)Ra

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