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A model for aircraft cabin evacuation considering passenger type

Journal of Safety Science and Resilience 2024年第1期5卷 83-90页

作者： Yaping Ma Jinfeng yuan lingling Tan Quanyi Liu Mengling Li Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province Civil Aviation Flight University of ChinaGuanghan 618307China School of Safety Science and Emergency Management Wuhan University of TechnologyWuhan 430070China

Pedestrian safety evacuation in aircraft cabins has been a challenging problem because of the aircraft’s unique characteristics,such as the diversity of passengers and the restricted evacuation environment.It is difficult to reproduce evacuation activities in aircraft cabin due to safety concerns and cost constraints.To fill this gap,an improved cellular automaton model of crowd evacuation for aircraft cabin is established by incorporating the characteristics of cabin space structures and passenger attributes.Passengers are divided into healthy individual passengers and disabled-healthy group passengers,whose movement mechanisms are quantified.Based on the constructed model,simulation experiments are conducted using the configuration cabin layout of B737-800 as an example.The results show that the evacuation time is prolonged with increased passenger density and the number of disabled passengers.Moreover,the overall evacuation time is insignificantly affected by whether disabled-healthy group passengers’seats are close to the aisle or window,and the evacuation efficiency is best when their seats are evenly distributed in the cabin.The evacuation time is the shortest when all cabin doors are open,and pedestrians are evacuated the slowest when the central emergency doors are closed.This study pro-vides valuable insights into effective strategies for pedestrian evacuation and crowd emergency management of civil aircraft.

关键词： Aircraft cabin evacuation Passenger type Cellular automaton model Pedestrian distribution Evacuation efficiency

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Boosting oxygen reduction activity and CO_(2) resistance on bismuth ferrite-based perovskite cathode for low-temperature solid oxide fuel cells below 600℃

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Journal of Energy Chemistry 2024年第3期90卷 600-609,I0013页

作者： Juntao Gao Zhiyun Wei Mengke yuan Zhe Wang Zhe Lü Qiang Li lingling Xu Bo Wei School of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina School of Physics and Electronic Engineering Harbin Normal UniversityHarbin 150025HeilongjiangChina

Developing efficient and stable cathodes for low-temperature solid oxide fuel cells(LT-SOFCs) is of great importance for the practical commercialization.Herein,we propose a series of Sm-modified Bi_(0.7-x)Sm_xSr_(0.3)FeO_(3-δ) perovskites as highly-active catalysts for LT-SOFCs.Sm doping can significantly enhance the electrocata lytic activity and chemical stability of cathode.At 600℃,Bi_(0.675)Sm_(0.025)Sr_(0.3)FeO_(3-δ)(BSSF25) cathode has been found to be the optimum composition with a polarization resistance of 0.098 Ω cm^2,which is only around 22.8% of Bi_(0.7)Sr_(0.3)FeO_(3-δ)(BSF).A full cell utilizing BSSF25 displays an exceptional output density of 790 mW cm^(-2),which can operate continuously over100 h without obvious degradation.The remarkable electrochemical performance observed can be attributed to the improved O_(2) transport kinetics,superior surface oxygen adsorption capacity,as well as O_(2)p band centers in close proximity to the Fermi level.Moreover,larger average bonding energy(ABE) and the presence of highly acidic Bi,Sm,and Fe ions restrict the adsorption of CO_(2) on the cathode surface,resulting in excellent CO_(2) resistivity.This work provides valuable guidance for systematic design of efficient and durable catalysts for LT-SOFCs.

关键词： Low-temperature solid oxide fuel cell Perovskite cathode DFT calculations CO_(2) tolerance

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Highly efficient nonuniform finite difference method for three-dimensional electrically stimulated liquid crystal photonic devices

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Photonics Research 2024年第4期12卷 865-875页

作者： ZHENGHAO GUO MENGJUN LIU ZIJIA CHEN RUIZHI YANG PEIYUN LI HAIXIA DA DONG yuan GUOFU ZHOU lingling SHUI HUAPENG YE Guangdong Provincial Key Laboratory of Optical Information Materials and Technology&Institute of Electronic Paper Displays South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou 510006China SCNU-TUE Joint Lab of Device Integrated Responsive Materials(DIRM) National Center for International Research on Green OptoelectronicsSouth China Normal UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices School of Information and Optoelectronic Science and EngineeringSouth China Normal UniversityGuangzhou 510006China Joint Laboratory of Optofluidic Technology and Systems National Center for International Research on Green OptoelectronicsSouth China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou 510006China College of Electronic and Optical Engineering&College of Microelectronics Nanjing University of Posts and TelecommunicationsNanjing 210046China Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province Nanjing 210023China

Liquid crystal(LC)photonic devices have attracted intensive attention in recent decades,due to the merits of tunability,cost-effectiveness,and high efficiency.However,the precise and efficient simulation of large-scale three-dimensional electrically stimulated LC photonic devices remains challenging and resource consuming.Here we report a straightforward nonuniform finite difference method(NFDM)for efficiently simulating largescale LC photonic devices by employing a spatially nonuniform mesh grid.

关键词： nonuniform crystal finite

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Licorice:comprehensive review of its chemical composition,pharmacodynamics,and medicinal value

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Acupuncture and Herbal Medicine 2024年第1期4卷 136-150页

作者： lingling Dang Yajing Jin Ye yuan Rui Shao Yu Wang School of Integrative Medicine Tianjin University of Traditional Chinese MedicineTianjinChina State Key Laboratory of Component-Based Chinese Medicine Tianjin University of Traditional Chinese MedicineTianjinChina

Licorice,a perennial herb of Leguminosa,is one of the oldest and most widely used herbal medicines worldwide.Its distinct sweet flavor and rich medicinal value make it an integral component of traditional Chinese medicine(TCM)formulations,which continue to be widely employed.The main chemical constituents of licorice include triterpenoid saponins,flavonoids,and polysaccharides.Experimental and clinical studies have demonstrated that various extracts and pure compounds derived from licorice exhibit a wide range of pharmacological properties including anti-inflammatory,antioxidant,antimicrobial,antiviral,antitumor,immune-regulatory,and neuroprotective activities.The bioactive constituents of licorice offer therapeutic benefits for cardiovascular and cerebrovascular diseases,diabetes mellitus,and liver disorders.This comprehensive review discusses the primary chemical constituents of licorice and their pharmacological activities,describes in vivo and in vitro models employed for studying licorice,and its potential targets and mechanisms of action.Furthermore,we discuss the toxicological profile,side effects,dosage recommendations,and clinical applications of licorice.This review aims to establish a foundation for further research on the safe and effective utilization of licorice while facilitating an in-depth exploration of its properties and fostering the development of novel therapeutic agents.

关键词： Active ingredients Clinical application Licorice Pharmacological activity

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Hierarchical Encapsulation and Rich sp^(2)N Assist Sb_(2)Se_(3)-Based Conversion-Alloying Anode for Long-Life Sodium-and Potassium-Ion Storage

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Energy & Environmental Materials 2023年第6期6卷 372-382页

作者： Shaokun Chong Meng Ma lingling yuan Shuangyan Qiao Shihong Dong Huakun Liu Shixue Dou Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi'an 710072China Institute for Superconducting and Electronic Materials University of WollongongWollongong NSW 2522Australia

Sodium-and potassium-ion batteries have exhibited great application potential in grid-scale energy storage due to the abundant natural resources of Na and K.Conversion-alloying anodes with high theoretical capacity and low-operating voltage are ideal option for SIBs and PIBs but suffer the tremendous volume variations.Herein,a hierarchically structural design and sp^(2)N-doping assist a conversion-alloying material,Sb_(2)Se_(3),to achieve superior life span more than 1000 cycles.It is confirmed that the Sb_(2)Se_(3)evolves into nano grains that absorb on the sp^(2)N sites and in situ form chemical bonding of C-N-Sb after initial discharge.Simulation results indicate that sp^(2)N has more robust interaction with Sb and stronger adsorption capacities to Na^(+)and K^(+)than that of sp3 N,which contributes to the durable cycling ability and high electrochemical activity,respectively.The ex situ transmission electron microscopy and X-ray photoelectron spectroscopy results suggest that the Sb_(2)Se_(3)electrode experiences conversion-alloying dual mechanisms based on 12-electron transfer per formula unit.

关键词： antimony selenide conversion-alloying anode N-doped carbon potassium-ion batteries sodium-ion batteries

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Atmospheric gaseous aromatic hydrocarbons in eastern China based on mobile measurements:Spatial distribution,secondary formation potential and source apportionment

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Journal of Environmental Sciences 2023年第8期130卷 102-113页

作者： lingling yuan Hongli Wang Yaqin Gao Guofa Ren Yiqun Lu Shengao Jing Wen Tan Liang Zhu Yu Shang Jing An Cheng Huang Institute of Environmental Pollution and Health School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China State of Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Complex Shanghai Academy of Environmental SciencesShanghai 200233China Tofwerk China Nanjing 210000China

Monocyclic aromatic hydrocarbons(MAHs)and polycyclic aromatic hydrocarbons(PAHs)are both well known as hazardous air pollutants and also important anthropogenic precursors of tropospheric ozone(O3)and secondary organic aerosols(SOA).In recent years,there have been intensive studies covering MAHs emission from various sources and their behavior under stimulated photochemical conditions.Yet in-situ measurements of PAHs presence and variations in ambient air are sparse.Herein we conducted large geometrical scale mobile measurements for 16 aromatic hydrocarbons(AHs,including 7 MAHs and 9 PAHs)in eastern China between October 27 and November 8,2019.This unique dataset has allowed for some insights in terms of AHs concentration variations,accompanying chemical composition,source contributions and spatial distributions in eastern China.In general,AHs showed a clear concentration variability between the south and the north of the Yangtze River Delta(YRD).The concentrations of PAHs were approximately 9%of AHs,but contributed 23%of SOA formation potential.Source apportionment via positive matrix factorization(PMF)model revealed that industrial processes as the largest source(44%)of observed AHs,followed by solvent usage(21%),vehicle exhaust(19%),coal combustion(11%)and coking processes(6%).In the perspective of PAHs sources,coal combustion emissions were identified as the dominating factor of a share of 41%–52%in eastern China.Our findings complemented the simultaneously monitoring information of PAHs and MAHs in eastern China,revealed the importance of PAHs to SOA formation and highlighted the necessity of formulating strategies to reduce emissions from anthropogenic sources and reduce risks to human health.

关键词： Monocyclic/polycyclic aromatics Spatial distribution Source apportionment Eastern China Mobile measurements

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SnTe nanoparticles physicochemically encapsulated by double carbon as conversion-alloying anode materials for superior potassium-ion batteries

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Journal of Materials Science & Technology 2023年第27期158卷 86-95页

作者： Ting Li Yikun Wang Qianwen Zhou lingling yuan Shuangyan Qiao Meng Ma Zhengqing Liu Shaokun Chong Frontiers Science Center for Flexible Electronics(FSCFE) Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China

Telluride tin(SnTe)is a promising conversion-alloying anode for potassium-ion batteries(PIBs)due to its high theoretical specific capacity induced by multi-electron transport reaction and low operating voltage,whereas huge volume expansion and poor kinetics behavior become key scientific bottleneck limiting the battery performances.Herein,SnTe nanoparticles physicochemically wrapped by graphene and nitrogen-doped carbon(SnTe@rGO@NC)are proposed as anode materials for PIBs.The pre-electrostatic interaction urges the formation of Sn-C and Te-C chemical bonds between SnTe and double carbon to strengthen the interfacial stability and electron transfer,and the conductive architecture with hierarchical encapsulation effect is beneficial to maintaining the electrode integrity and electrochemical dynamics.It is demon-strated from first principles calculations and experimental results that SnTe@rGO@NC contributes fast electron transmission,strong K-ion adsorption,and superior K-ion diffusion capability.Ex-situ characteri-zations uncover that SnTe undergoes conversion-alloying dual-mechanism with the products of K_(2)Te and K_(4)Sn_(23)replied on Sn redox site(23SnTe+50K^(+)+50e^(-)↔K_(4)Sn_(23)+23K_(2)Te).Thus,the SnTe@rGO@NC electrode delivers a high initial charge specific capacity of 243.9 mAh g^(-1)at 50 mA g^(-1),superior rate performance(112.6 mAh g^(-1)at 1.0 A g^(-1)),and outstanding cyclic stability at various current densities.

关键词： Potassium-ion batteries Anode materials Tin telluride Chemical bonding Conversion-alloying mechanism

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The OsWRKY72-OsAAT30/OsGSTU26 module mediates reactive oxygen species scavenging to drive heterosis for salt tolerance in hybrid rice

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Journal of Integrative Plant Biology 2024年第4期66卷 709-730页

作者： Citao Liu Bigang Mao Yanxia Zhang Lei tian Biao Ma Zhuo Chen Zhongwei Wei Aifu Li Ye Shao Gongye Cheng lingling Li Wenyu Li Di Zhang Xiaoping Ding Jiangxiang Peng Yulin Peng Jiwai He Nenghui Ye Dingyang yuan Chengcai Chu Meijuan Duan Hunan Provincial Key Laboratory of Stress Biology College of AgricultureHunan Agricultural UniversityChangsha 410128China State Key Laboratory of Hybrid Rice Hunan Hybrid Rice Research CenterChangsha 410125China College of Agriculture South China Agricultural UniversityGuangzhou 510642China State Key Laboratory of Wheat and Maize Crop Science Center for Crop Genome EngineeringCollege of AgronomyHenan Agricultural UniversityZhengzhou 450002China College of Horticulture Fujian Agriculture and Forestry UniversityFuzhou 350002China Department of Computational Medicine and Bioinformatics University of MichiganAnn ArborMI 48109 USA Biobin Data Science Co. Ltd.Changsha 410221China

Hybrid rice(Oryza sativa)generally outperforms its inbred parents in yield and stress tolerance,a phenomenon termed heterosis,but the underlying mechanism is not completely understood.Here,we combined transcriptome,proteome,physiological,and heterosis analyses to examine the salt response of super hybrid rice Chaoyou1000(CY1000).In addition to surpassing the mean values for its two parents(mid-parent heterosis),CY1000 exhibited a higher reactive oxygen species scavenging ability than both its parents(over-parent heterosis or heterobeltiosis).Nonadditive expression and allele-specific gene expression assays showed that the glutathione S-transferase gene OsGSTU26 and the amino acid transporter gene OsAAT30 may have major roles in heterosis for salt tolerance,acting in an overdominant fashion in CY1000.Furthermore,we identified OsWRKY72 as a common transcription factor that binds and regulates OsGSTU26 and OsAAT30.The salt-sensitive phenotypes were associated with the OsWRKY72^(paternal)genotype or the OsAAT30^(maternal)genotype in core rice germplasm varieties.OsWRKY72^(paternal)specifically repressed the expression of OsGSTU26 under salt stress,leading to salinity sensitivity,while OsWRKY72^(maternal)specifically repressed OsAAT30,resulting in salinity tolerance.These results suggest that the OsWRKY72-OsAAT30/OsGSTU26 module may play an important role in heterosis for salt tolerance in an overdominant fashion in CY1000 hybrid rice,providing valuable clues to elucidate the mechanism of heterosis for salinity tolerance in hybrid rice.

关键词： allele-specific gene expression(ASE) heterosis hybrid rice nonadditive effect(NAE) salt tolerance transcriptome and proteome

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Immobilization of self-assembled pre-dispersed nano-TiO_2 onto montmorillonite and its photocatalytic activity

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Journal of Environmental Sciences 2015年第6期27卷 108-117页

作者： Tingting Zhang yuan Luo Bing Jia Yan Li lingling yuan Jiang Yu Research Group of Environmental Catalysis & Separation Process College of Chemical Engineering Beijing University of Chemical Technology

The immobilization of pre-dispersed Ti O2 colloids onto the external surface of the clay mineral montmorillonite（Mt） was accomplished and regulated via a self-assembly method employing the cationic surfactant cetyltrimethylammonium bromide（CTAB）. The role of CTAB in the synthesis process was investigated by preparing a series of Ti O2-CTAB-Mt composites（TCM） with various CTAB doses. The results indicated that a uniform and continuous Ti O2 film was deposited on the external surface of montmorillonite in the composite synthesized with 0.1 wt.% of CTAB, and the TCM nano-composites showed much higher values for specific surface area, average pore size and pore volume than the raw montmorillonite clay. Then, the formed TCM materials were applied in photocatalytic degradation of 2,4-dichlorophenol（2,4-DCP） in aqueous solution. The degradation efficiency reached as high as 94.7%. Based on the degradation intermediates benezoquinone, fumaric acid and oxalic acid identified by LC-MS analysis, a mechanism for the photocatalytic oxidation of 2,4-DCP on Ti O2/Mt nano-composites is proposed.

关键词： Ti O2/Mt composite CTAB Immobilization Photocatalysis

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“生长的城市”动态城市设计方法研究——以辽东湾10年设计实践为例

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建筑学报 2024年第4期 85-91页

作者：赵曼彤张伶伶袁敬诚沈阳建筑大学建筑与规划学院沈阳110168

基于当代城市生长的动态语境,立足于自然、城市与文化维度的共生关系,从宏观、中观和微观3个层面进行辽东湾新区动态城市设计探索。动态城市设计以自然地形、基础设施和场所建筑作为可生长的载体和媒介,把“流”“形”和“场”作为设计... 详细信息

基于当代城市生长的动态语境,立足于自然、城市与文化维度的共生关系,从宏观、中观和微观3个层面进行辽东湾新区动态城市设计探索。动态城市设计以自然地形、基础设施和场所建筑作为可生长的载体和媒介,把“流”“形”和“场”作为设计操作的适应性设计要素,“融”“控”“编”穿越其间的动态形式和关系事件,生成极具内聚力的动态设计框架和结构张力的弹性系统;提出以过程的时空构建整体空间形态、以关联的促进形成空间结构肌理和以交互的指引来塑造城市空间的场所精神。

关键词：生长过程关联交互动态城市设计

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