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Dynamic foraging strategy adaptation to heterogeneous environments contributes to social aggregation in snub-nosed monkeys

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Zoological Research 2024年第1期45卷 39-54页

作者： Lan Zhao Sheng-Nan Ji Xiao-Bing Du Jia-Hui Liu Bo-Lun Zhang Pei-Hua Li Yi-Jun yang Bao-guo Li yan-qing guo Xiao-Guang Qi College of Life Sciences Northwest UniversityXi’anShaanxi 710069China Chengdu Institute of Biology Chinese Academy of SciencesChengduSichuan 610041China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China

The dynamics of animal social structures are heavily influenced by environmental patterns of competition and *** folivorous colobine primates,prevailing theories suggest that larger group sizes should be favored in rainforests with a year-round abundance of food,thereby reducing feeding ***,paradoxically,larger groups are frequently found in high-altitude or high-latitude montane ecosystems characterized by a seasonal scarcity of *** contradiction is posited to arise from cooperative benefits in heterogeneous *** investigate this hypothesis,we carried out a six-year field study on two neighboring groups of golden snub-nosed monkey(Rhinopithecus roxellana),a species representing the northernmost distribution of colobine *** showed that the groups adjusted their movement and habitat selection in response to fluctuating climates and spatiotemporal variability of resources,indicative of a dynamic foraging ***,during the cold,resource-scarce conditions in winter,the large group occupied food-rich habitats but did not exhibit significantly longer daily travel distances than the smaller neighboring ***,we compiled an eco-behavioral dataset of 52 colobine species to explore their evolutionary *** of this dataset suggested that the increase in group size may have evolved via home range expansion in response to the cold and heterogeneous climates found at higher altitudes or ***,we developed a multi-benefits framework to interpret the formation of larger groups by integrating environmental *** cold and diverse environments,even smaller groups require larger home ranges to meet their dynamic survival *** spatiotemporal distribution of high-quality resources within these expanded home ranges facilitates more frequent interactions between groups,thereby encouraging social aggregation into larger *** process enhances the benefits of collabor

关键词： Social evolution Folivore paradox MLS Rhinopithecus roxellana Multi-benefits framework

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基于网络药理学和分子对接探究黄连解毒散治疗猪传染性胃肠炎的作用机制

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中国预防兽医学报 2024年第2期46卷 147-158页

作者：银慧慧颜国庆赵武曾雪颜刘伟广西壮族自治区兽医研究所广西兽医生物技术重点实验室/农业农村部中国(广西)-东盟跨境动物疫病防控重点实验室广西南宁530001

为探究黄连解毒散(HLJDS)治疗猪传染性胃肠炎(TGE)的作用靶点及作用机制,本研究通过中药系统药理学数据库及分析平台(TCMSP)检索HLJDS中的所有化学成分,以口服生物利用度(OB≥30%)、类药性(DL≥0.18)为条件筛选HLJDS的活性化合物及HLJD... 详细信息

为探究黄连解毒散(HLJDS)治疗猪传染性胃肠炎(TGE)的作用靶点及作用机制,本研究通过中药系统药理学数据库及分析平台(TCMSP)检索HLJDS中的所有化学成分,以口服生物利用度(OB≥30%)、类药性(DL≥0.18)为条件筛选HLJDS的活性化合物及HLJDS活性化合物潜在靶点的数量和名称。利用Gene cards数据库和CTD数据库检索与筛选TGE的相关靶点和HLJDS作用于TGE的相关靶点。采用微生信在线Venn图制作工具分析HLJDS活性化合物和TGE的共同靶点。将上述数据采用Cytoscape 3.9.1软件构建中药-活性化合物-靶点的网络,其中度值>32的化合物可能是关键的化合物或者作用靶点。将HLJDS作用于TGE的相关靶点上传至STRING数据库,获得HLJDS作用于TGE的PPI网络。利用Cytoscape软件中的相关工具分析靶点的网络拓扑学参数,并通过这些参数筛选HLJDS作用于TGE的关键靶点。结果显示,从HLJDS共筛选到77个活性成分和825个药物作用靶点,并筛选到950个TGE相关靶点,其中HLJDS的活性成分与TGE交集的靶点有202个。中药-活性化合物-靶点的网络图结果显示,HLJDS通过77个有效活性化合物作用于202个HLJDS与TGE交集的靶点。PPI网络分析结果显示,肿瘤坏死因子(TNF)、表皮生长因子受体(EGFR)、一氧化氮合酶3 (NOS3)、Toll样受体4 (TLR4)与信号转导和转录活化因子3(STAT3)等31个靶点可能是HLJDS治疗TGE的关键靶点。通过DAVID数据库对HLJDS作用于TGE的相关靶点进行GO功能分析和KEGG信号通路富集分析。采用Auto Dock Vina 1.1.2将HLJDS度值前6的主要活性化合物PPI网络中前6的关键靶点进行分子对接并获得结合能。将度值前15的HLJDS活性化合物和关键靶点TLR4、TNF-α进行分子对接,通过结合能预测HLJDS活性化合物及对照化合物(姜黄素和维A酸)与TLR4、TNF-α的分子对接效果。GO功能和KEGG信号通路分析结果显示,HLJDS作用于TGE的相关靶点涉及生物过程333个、细胞组分51个、分子功能88个主要功能;涉及AGE-RAGE信号通路、PI3K-Akt信号通路和沙门氏菌感染等与TGE相关的信号通路。分子对接结果显示,HLJDS 6个主要活性化合物与6个关键核心靶点均能够自发结合。且相较于对照化合物姜黄素和维A酸,HLJDS中的黄藤素、黄连素、黄芩素和槲皮素等14个活性化合物与TLR4、TNF-α的结合能更低,结合效果更好。上述结果表明,HLJDS可通过多成分、多靶点、多信号通路作用于TGE的相关靶点,发挥治疗TGE的作用。本研究为HLJDS的进一步开发与应用提供研究基础与方向。

关键词：黄连解毒散猪传染性胃肠炎网络药理学作用机制分子对接

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新型无人机检测技术在桥梁检测工程中的应用策略

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智能建筑与智慧城市 2024年第5期 27-29页

作者：杨友震闫国庆山东省交通科学研究院

文章研究了新型无人机检测技术在桥梁检测工程中的应用策略,在明确无人机检测技术适用性的基础上,从总体检测流程、无人机路径规划、摄影图像预处理、裂缝边缘分割、裂缝信息获取等方面出发,分析了桥梁检测工程中新型无人机检测技术应... 详细信息

文章研究了新型无人机检测技术在桥梁检测工程中的应用策略,在明确无人机检测技术适用性的基础上,从总体检测流程、无人机路径规划、摄影图像预处理、裂缝边缘分割、裂缝信息获取等方面出发,分析了桥梁检测工程中新型无人机检测技术应用要点,有利于提高桥梁检测的全面性和精确度,为桥梁维护管理提供科学决策。

关键词：桥梁检测工程新型无人机检测技术检测技术应用智能化检测

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Phase Separation and Transport Behavior in La_(0.67-x)Sm_xSr_(0.33)MnO_3 System

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Chemical Research in Chinese Universities 2005年第6期21卷 707-713页

作者： LIU Ning yan guo-qing XU Su-jun Department of Physics Suzhou College Suzhou 23400 P. R. China Structure Research Laboratory Science and Technology University of China Hefei 230026 P. R. China

The magnetic behavior and the transport behavior of La0.67-x Smx Sr0.33 MnO3 （x = 0. 00, 0. 10, 0. 20, 0. 30, 0. 40, 0. 50 and 0. 60 ） systems were studied through measuring the M-T curves, electron spin resonance （ ESR ） curves and ρ-T curves. The samples exhibit a long-range ferromagnetic order when x = 0. 00, 0. 10, a cluster-spin glass state when x = 0. 20 and 0. 30, and an anti-ferromagnetic state at low temperatures when x = 0. 40, 0. 50 and 0. 60. The samples of x = 0. 30 and 0.40 show phase separation at temperatures above Te. The transport behavior of the sample of x = 0. 60 becomes abnormal when the doping is high, and an insulator-metal transition occurs near To and then a metal-insulator transition occurs, which rarely appears in an ABO3 structure. It is concluded that the magnetic and electric behavior changes of the systems depend on the extra magnetism and lattice distortion effect induced by Sm doping.

关键词： Magnetic structure Phase separation Transport behavior Colossal magnetoresistance effect

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Image Tampering Detection Using No-Reference Image Quality Metrics

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Journal of Harbin Institute of Technology(New Series) 2014年第6期21卷 51-56页

作者： Ying Li Bo Wang Xiang-Wei Kong yan-qing guo School of Information and Communication Engineering Dalian University of Technology

In this paper,a new approach is proposed to determine whether the content of an image is authentic or modified with a focus on detecting complex image *** image tampering without any prior information of the original image is a challenging problem since unknown diverse manipulations may have different characteristics and so do various formats of *** principle is that image processing,no matter how complex,may affect image quality,so image quality metrics can be used to distinguish tampered *** particular,based on the alteration of image quality in modified blocks,the proposed method can locate the tampered *** to four types of effective no-reference image quality metrics,we obtain 13 features to present an *** experimental results show that the proposed method is very promising on detecting image tampering and locating the locally tampered areas especially in realistic scenarios.

关键词： image forensics tampering detection no-reference image quality metrics tampering localization

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Model Parameters Identification and Backstepping Control of Lower Limb Exoskeleton Based on Enhanced Whale Algorithm

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Chinese Journal of Mechanical Engineering 2024年第2期37卷 100-114页

作者： yan Shi Jiange Kou Zhenlei Chen Yixuan Wang qing guo School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Aeronautics and Astronautics University of Electronic Science and Technology of ChinaChengdu 611731China

Exoskeletons generally require accurate dynamic models to design the model-based controller conveniently under the human-robot interaction ***,due to unknown model parameters such as the mass,moment of inertia and mechanical size,the dynamic model of exoskeletons is difficult to ***,an enhanced whale optimization algorithm(EWOA)is proposed to identify the exoskeleton model ***,the periodic excitation trajectories are designed by finite Fourier series to input the desired position demand of exoskeletons with mechanical physical *** a backstepping controller based on the identified model is adopted to improve the human-robot wearable comfortable performance under cooperative ***,the proposed Model parameters identification and control are verified by a two-DOF exoskeletons *** knee joint motion achieves a steady-state response after 0.5 ***,the position error of hip joint response is less than 0.03 rad after 0.9 *** addition,the steady-state human-robot interaction torque of the two joints is constrained within 15 N·*** research proposes a whale optimization algorithm to optimize the excitation trajectory and identify model ***,an enhanced mutation strategy is adopted to avoid whale evolution’s unsatisfactory local optimal value.

关键词： Parameter identification Enhanced whale optimization algorithm(EWOA) Backstepping Human-robot interaction Lower limb exoskeleton

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Exploring a new path of green and efficient utilization of sinter return fine to produce composite pellets

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Journal of Iron and Steel Research International 2024年第7期31卷 1610-1622页

作者： yan-biao Chen Wen-guo Liu Hao guo Jing-song Wang qing-guo Xue Hai-bin Zuo State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China MCC Capital Engineering and Research Incorporation Limited Beijing 100176China

Efficient utilization of sinter return fine is an important measure to reduce cost,increase efficiency,save energy and reduce emission.A new path of green and efficient utilization of return fine was proposed to produce composite *** metallurgical properties of composite pellets under the condition of hydrogen-rich blast furnace were *** experimental results indicate that the coated concentrate was consolidated for the composite pellets through normal Fe_(2)O_(3) *** the surface of core return fine,the liquid phase formed due to its low-melting point,assimilated the adjacent concentrate,and then consolidated with the temperature *** with regular pellets,the com-pressive strength and reduction swelling index of composite pellets were decreased,but the reducibility index and softening-melting properties were *** addition,the reduction degradation index of composite pellets was sig-nificantly higher than that of ***,adding composite pellets was conducive to indirect reduction in blast furnace,reducing fuel ratio and improving production *** to the effect of the roasting system on the metallurgical properties,the roasting temperature and time were determined as 1250℃and 30 min,*** composite pellets can be produced under the traditional pelletizing process.

关键词： Sinter Return fine Composite pellet Roasting system Metallurgical property Hydrogen-rich blast furnace

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Dynamic foraging strategy adaptation to heterogeneous environments contributes to social aggregation in snub-nosed monkeys

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动物学研究 2024年第1期

作者： Lan Zhao Sheng-Nan Ji Xiao-Bing Du Jia-Hui Liu Bo-Lun Zhang Pei-Hua Li Yi-Jun yang Bao-guo Li yan-qing guo Xiao-Guang Qi

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Flexible assistance strategy of lower limb rehabilitation exoskeleton based on admittance model

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Science China(Technological Sciences) 2024年第3期67卷 823-834页

作者： KOU JianGe WANG YiXuan CHEN ZhenLei SHI yan guo qing XU Meng School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Aeronautics and Astronautics University of Electronic Science and Technology of ChinaChengdu 611731China Department of Musculoskeletal Tumor Senior Department of Orthopedicsthe Fourth Medical Centerof PLA GeneralHospitalBeijing 100853China

Exercise training based on exoskeleton is an effective rehabilitation method for stroke patients. However, some rehabilitation exoskeletons still have poor wearable performance and obvious human-robot impedance during training, which easily cause secondary injuries to the patients. In this study, a variable admittance control strategy is proposed to improve the operator's wearable comfort, which can adapt to different operators by regulating admittance parameters. The admittance controller has two feedback loops: the position inner-loop and the admittance outer-loop. Meanwhile, the exoskeleton Lagrange model is constructed with unknown friction disturbance. By using Lyapunov technique and backstepping with state observer, the joint position error of exoskeleton is convergence into a zero neighborhood. The effectiveness of the proposed admittance controller is verified by both simulation and experiment. The tracking error of hip and knee joint is less than 4 degrees while the human-robot interaction torque is constrained in a tolerable range of the operator.

关键词： human-robot interaction exoskeleton backstepping admittance control

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Research on light dark matter particle from evaporating primordial black hole in CDEX-10 experiment

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Science China(Physics,Mechanics & Astronomy) 2024年第10期67卷 168-169页

作者： qing-guo Huang School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China

Dark matter is an essential component of the universe,accounting for approximately 85%of all ***,what the nature of dark matter actually is remains a huge *** far,all evidence for the existence of dark matter has come from gravitational *** gravitational interactions are universal,it is challenging to reveal the nature of dark matter through gravitational *** unravel the mystery of dark matter,it is essential to directly detect dark matter.

关键词： approximate particle gravitational

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