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Rational design of vitamin C/defective carbon van der Waals heterostructure for enhanced activity,durability and storage stability toward oxygen reduction reaction

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Journal of Energy Chemistry 2024年第1期88卷 103-111,I0003页

作者： Ruiqi Cheng Kaiqi li Huanxin li Tianshuo Zhao yibo Wang Qingyue Xue Jiao Zhang Chaopeng Fu Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Christopher Ingold Laboratory Department of ChemistryUniversity College LondonLondon WC1H 0AJUK Department of Chemistry Physical&Theoretical Chemistry LaboratoryUniversity of OxfordSouth Parks RoadOxford OX13QZUK

Metal-free defective carbon materials with abundant active sites have been widely studied as low-cost and efficient oxygen reduction reaction(ORR)electrocatalysts in metal-air ***,the active sites in defective carbon are easily subjected to serious oxidation or hydroxylation during ORR or storage,leading to rapid degradation of ***,we design a van der Waals heterostructure comprised of vitamin C(VC)and defective carbon(DC)to not only boost the activity but also enhance the durability and storage stability of the DC-VC *** formation of VC van der Waals between DC and VC is demonstrated to be an effective strategy to protect the defect active sites from oxidation and hydroxylation degradation,thus significantly enhancing the electrochemical durability and storage anti-aging ***,the DC-VC van der Waals can reduce the reaction energy barrier to facilitate the *** findings are also confirmed by operando Fourier transform infrared spectroscopy and density functional theory *** is necessary to mention that the preparation of this DC-VC electrocatalyst can be scaled up,and the ORR performance of the largely produced electrocatalyst is demonstrated to be very ***,the DC-VC-based aluminum-air batteries display very competitive power density with good performance maintenance.

关键词： Van der Waals heterostructure Oxygen reduction reaction Stability Scalable production Aluminum-air battery

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“双碳”目标下新型电力系统PEST-SWOT分析

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四川电力技术 2024年第1期47卷 35-42页

作者：栗奕博代清钊杨富麟孙冬张晓春曾博华北电力大学经济与管理学院北京102206 华北电力大学电气与工程学院北京102206

随着“双碳”目标的提出,中国将加快构建适应新能源比例不断提升的新型电力系统,大力发展低碳能源是实现“双碳”目标的必然路径。首先,研究了“双碳”目标与新型电力系统的耦合关系,分析新型电力系统发展现状;其次,考虑中国新型电力系... 详细信息

随着“双碳”目标的提出,中国将加快构建适应新能源比例不断提升的新型电力系统,大力发展低碳能源是实现“双碳”目标的必然路径。首先,研究了“双碳”目标与新型电力系统的耦合关系,分析新型电力系统发展现状;其次,考虑中国新型电力系统所处环境和自身特性,从宏观、微观两个层面,采用PEST-SWOT分析方法,全面分析新型电力系统建设过程中政治、经济、社会、技术方面自身的优劣势,以及面临的机遇与威胁;最后,基于上述分析,在不同发展战略下提出针对性政策建议和有效措施,为新型电力系统建设提供参考和借鉴。

关键词： “双碳”目标新型电力系统 PEST-SWOT分析发展战略

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Two-dimensional C2N-based single-atom catalyst with complex microenvironment for enhanced electrochemical nitrogen reduction:A descriptor-based design

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Journal of Energy Chemistry 2024年第10期97卷 110-119页

作者： Enduo Dai Wei An Ruixian Guo Xugen Shi Yunyi li yibo Wang Mingming liu College of Chemistry and Chemical Engineering Shanghai University of Engineering Science

The catalytic descriptor with operational feasibility is highly desired towards rational design of high-performance catalyst especially the electrode/electrolyte solution interface working under mild ***,we demonstrate that the descriptor Ω parameterized by readily accessible intrinsic properties of metal center and coordination is highly operational and efficient in rational design of single-atom catalyst（SAC） for driving electrochemical nitrogen reduction（NRR）.Using twodimensional metal（M）-BxPySzNm@C2N as prototype SAC models,we reveal that*N2+（H++e-）→*N2H acts predominantly as the potential-limiting step（PLS） of NRR on M-B2P2S2@C2N and M-B1P1S1N3@C2N regardless of the distinction in coordination *** the 28 screened M active sites,with Ω values close to the optimal 4,M-B2P2S2@C2N(M=V（Ω=3.53）,Mo（Ω=5.12）,and W（Ω=3.92）) and M-B1P1S1N3@C2N(M=V（Ω=3.00）,Mo（Ω=4.34）,and W（Ω=3.32）) yield the lowered limiting potential（UL） as-0.45,-0.54.-0.36,-0.58,-0.25,and-0.24 V,respectively,thus making them the promising NRR *** importantly,these SACs are located around the top of volcano-shape plot of ULversus Ω,re-validating Ω as an effective descriptor for accurately predicting the high-activity NRR SACs even with complex *** study unravels the relationship between active-site structure and NRR performance via the descriptor Ω,which can be applied to other important sustainable electrocatalytic reactions involving activation of small molecules via σ-donation and π*-backdonation mechanism.

关键词： Descriptor DFT Electrocatalysis N2 reduction Single-atom catalyst

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性诱剂在稻纵卷叶螟测报和诱杀中的应用

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浙江农业科学 2024年第2期65卷 385-389页

作者：文吉辉姚毅李一波宋齐生王智湖南省农业科学院植物保护研究所湖南长沙410125 湖南农业大学资源环境学院湖南长沙410128 临湘市农业农村局植保植检站湖南临湘414300 Molecular Insect Physiology Division of Plant Science&Technology University of Missouri ColumbiaMissouri ColumbiaUSA MO65211 湖南师范大学生命科学学院湖南长沙410081

为了明确性诱剂在稻纵卷叶螟测报和诱杀中的应用效果,我们比较了性诱剂诱集法和田间赶蛾法在测报上的应用效果,并分析了不同诱捕器对稻纵卷叶螟诱杀效果。结果表明,性诱剂诱集稻纵卷叶螟有明显的主峰,与田间赶蛾法的主峰较为一致,可用... 详细信息

为了明确性诱剂在稻纵卷叶螟测报和诱杀中的应用效果,我们比较了性诱剂诱集法和田间赶蛾法在测报上的应用效果,并分析了不同诱捕器对稻纵卷叶螟诱杀效果。结果表明,性诱剂诱集稻纵卷叶螟有明显的主峰,与田间赶蛾法的主峰较为一致,可用于种群变化趋势的监测。稻纵卷叶螟性诱剂水盆式诱捕器比黏板式诱捕器效果好,总诱蛾量高267.33%。

关键词：稻纵卷叶螟性诱剂测报效果诱控效果

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大型水运枢纽船舶闸室连续排挡模型及算法研究

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山东科学 2024年第3期37卷 121-130页

作者：陈登峰李一博汪磊姚红云杨俊毅云南省公路工程监理咨询有限公司云南昆明650021 重庆交通大学交通运输学院重庆400041 百色枢纽通航投资有限公司广西百色533000

为提高内河通航设施船舶通航效率,提高通航设施工作能力,提出一种可以求解考虑船舶顺序入闸和不考虑船舶顺序入闸两种情况的船舶闸室连续排挡模型和算法。利用二维装箱问题模型建立船舶闸室连续排挡模型,采用贪婪策略思想,提出船舶闸室... 详细信息

为提高内河通航设施船舶通航效率,提高通航设施工作能力,提出一种可以求解考虑船舶顺序入闸和不考虑船舶顺序入闸两种情况的船舶闸室连续排挡模型和算法。利用二维装箱问题模型建立船舶闸室连续排挡模型,采用贪婪策略思想,提出船舶闸室连续排挡模型求解算法。根据百色枢纽工程生成仿真到闸船舶船型数据,用算法进行闸室排挡计算。结果表明,在随机生成90艘船舶的情况下,考虑船舶到闸顺序的排挡结果需要使用47个闸次,闸次平均占用率为76.424%,不考虑船舶到闸顺序的排挡结果需要使用45个闸次,闸次平均占用率为76.821%,模型和算法能够对不同情况下船舶闸室进行有效连续排挡。

关键词：内河航运船舶排挡二维装箱贪婪策略

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Evaluation of facial temperature distribution changes during meditation using infrared thermal imaging:An experimental,cross-over study

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Journal of Traditional Chinese Medical Sciences 2023年第3期10卷 257-266页

作者： Raoying Wang lili Zhu Xiaohan liu Tengteng li Jiayi Gao Hongjuan li Yu Lu Yuanfeng Zhang yibo li Tao Lu School of life Sciences Beijing University of Chinese MedicineBeijing102488China School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing102488China Institute of Traditional Chinese Medicine Information Chinese Academy of Traditional Chinese MedicineBeijing101408China Department of Medical Innovation China Traditional Chinese Medicine Science and Technology Development CenterBeijing100027China

Objective:To investigate the differences between meditation and resting states using infrared thermal imaging(IRTI)to determine facial temperature distribution features during meditation and annotate the patterns of facial temperature changes during meditation from the perspective of traditional Chinese medicine facial ***:Each participant performed 10 min meditation and 10 min resting but in different sequences.A concentration test was set as the task load,followed by a meditation/resting or resting/meditation session,during which the participants'facial temperatures were observed using *** were scored on the Big Five Inventory(BFI)and Mindful Attention Awareness Scale(MAAS).Results:Forehead temperatures decreased more during meditation than during the resting *** chin temperature increased only during meditation(P<.0001).For the subjects with meditation experience,there were significant differences in the temperatures of the left forehead(P<.01),right forehead(P<.01)and chin(P<.05)between the meditation and resting state at the 10~(th)*** the nontask state,the BFI-Extraversion showed a negative correlation with the temperature of the left forehead(R=-0.41,P=.03).In the post-task state,the temperature of the left forehead was negatively correlated with scores on the MAAS(R=-0.42,P=.02).Conclusion:Using IRTI to study meditation offers a practical solution to the challenges in meditation *** results indicate that an increase in chin temperature may be a representative feature of a meditation state,and forehead temperature is also a potential indicator.

关键词： Meditation Infrared thermal imaging Mindfulness Personality Meditation experience

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Real time observation of the photocleavage of single DNA molecules

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Chinese Science Bulletin 2003年第7期48卷 673-675页

作者： li Bin , HU Jun , WANG Ying, WU Shiying, HUANG yibo & li Minqian Shanghai Institute of Nuclear Research,Chinese Academy of Sciences, Shanghai 201800,China Shanghai Institute of Nuclear Research Chinese Academy of Sciences Shanghai 201800 China

A method for real time observation of photo-cleavage of stretched λDNA at single molecular level by a fluorescent microscope coupled with CCD is developed. DNA molecules stained with YOYO-1 are stretched by the mo-lecular combing technique and fixed on a modified slide. Then the process of photocleavage and relaxation of DNA under radiation of blue light is observed. We speculate that the conformation change of stretched DNA and the effect of water are likely to facilitate the effect of YOYO photocleav-age DNA molecules. The photocleavage effect of YOYO for stretched DNA may be useful to study DNA elasticity, cancer research as well as the interaction between DNA and dyes.

关键词：单个DNA分子光致断裂原子力显微镜荧光显微镜实时观察生物大分子

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Large contributions of emission reductions and meteorological conditions to the abatement of PM_(2.5)in Beijing during the 24th Winter Olympic Games in 2022

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Journal of Environmental Sciences 2024年第2期136卷 172-188页

作者： Yaping Jiang Shaocai Yu Xue Chen yibo Zhang Mengying li Zhen li Zhe Song Pengfei li Xiaoye Zhang Eric lichtfouse Daniel Rosenfeld Key Laboratory of Environmental Remediation and Ecological Health Ministry of EducationResearch Center for Air Pollution and HealthCollege of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China College of Science and Technology Hebei Agricultural UniversityBaoding 071000China Chinese Academy of Meteorological Sciences China Meteorological AdministrationBeijing 100081China Aix-Marseille Univ CNRSColl FranceCNRSIRDINRAEEuropole Mediterraneen de l’ArboisAvenue Louis Philibert13100 Aix en ProvenceFrance Xi’an Jiaotong University State Key Laboratory of Multiphase Flow in Power EngineeringXi’an 710049China Institute of Earth Sciences The Hebrew University of JerusalemJerusalemIsrael

To guarantee the blue skies for the 2022 Winter Olympics held in Beijing and Zhangjiakou from February 4 to 20,Beijing and its surrounding areas adopted a series of emission control *** provides an opportunity to determine the impacts of large-scale temporary control measures on the air quality in Beijing during this special ***,we applied the WRF-CMAQ model to quantify the contributions of emission reduction measures and meteorological *** show that meteorological conditions in 2022 decreased PM_(2.5)in Beijing by 6.9 and 11.8μg/m^(3)relative to 2021 under the scenarios with and without emission reductions,*** emission reduction measures implemented in Beijing and seven neighboring provinces resulted in an average decrease of 13.0μg/m^(3)(-41.2%)in PM_(2.5)in *** the entire period,local emission reductions contributed more to good air quality in Beijing than nonlocal emission *** the emission reduction scenario,local,controlled regions,other regions,and boundary conditions contributed 47.7%,42.0%,5.3%,and 5.0%to the PM_(2.5)concentrations in Beijing,*** results indicate that during the cleaning period with the air masses from the northwest,the abatements of PM_(2.5)were mainly caused by local emission ***,during the potential pollution period with the air masses from the east-northeast and west-southwest,the abatements of PM_(2.5)were caused by both local and nonlocal emission reductions almost *** implies that regional coordinated prevention and control strategies need to be arranged scientifically and rationally when heavy pollution events are forecasted.

关键词： PM_(2.5) WRF-CMAQ Meteorological conditions Emission reductions Winter Olympic games

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Chalk5 regulates grain chalkiness,a trait affecting quality and head rice yield in rice

Chalk5 regulates grain chalkiness,a trait affecting quality ...

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第二届全国发育生物学大会

作者： yibo li Yuqing He Huazhong Agricultural University

Improving grain quality is one of the most important goals of plant science *** chalkiness in rice,a chalky texture of endosperm,is a highly undesirable trait of the grain for human food that deteriorates milling,cooking,eating and appearance quality,and thus represents a major problem in many rice-producing areas of the ***,the molecular basis of this trait is still poorly ***,we show that a major quantitative trait locus(QTL),Chalk5,regulates grain chalkiness which also affects head rice yield and many other quality ***5 encodes a vacuolar H+-translocating pyrophosphatase(V-PPase)with inorganic pyrophosphate(PPi)hydrolysis and H+-translocation ***5 functions as a positive regulator of grain chalkiness *** expression of Chalk5 increases chalkiness of the endo-sperm putatively by disturbing the pH homeostasis of the endomembrane trafficking system in developing seeds,which affects the biogenesis of protein bodies and is coupled with a great increase in small vesicle-like structures,thus forming air spaces among endosperm storage substances and resulting in chalky ***-trogression of the Chalk5 allele of non-chalky variety into a chalky variety greatly decreases rice grain chalki-ness rate by 80.5%and increases head rice yield by 37.9%,equally increasing

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Research on the Acquisition of Human Behavior Data Based on Kinect

Research on the Acquisition of Human Behavior Data Based on ...

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第30届中国控制与决策会议

作者： Xueping liu yibo li College of Automation Engineering Nanjing University of Aeronautics and Astronautics College of Automation Engineering Shenyang Aerospace University

In the field of computer vision, identifying interesting objects from complex environments by depth data becomes a hot topic in the field of computer vision. In the research of human behavior recognition, it is an important branch in the field of action recognition to obtain the data of human behavior through depth data, and then to do the corresponding detection and recognition. This paper studies the acquisition technology of human behavior data based on Kinect, analyzes the technical parameters and measurement principle of the new generation of Kinect v2（Kinect for Windows v2 sensor）, and designs a human behavior data acquisition system based on Kinect v2. Through experiments, it is proved that the method presented in this paper for the acquisition of human body behavior data is practical and feasible.

关键词： Kinect depth data skeleton data human behavior RGB-D

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