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Green Energy & Environment 2020年第1期5卷 50-58页

作者： Kongyao Chen gaojie li Yanjie Wang Weihua Chen liwei Mi Center for Advanced Materials Research Zhongyuan University of TechnologyHenan450007China College of Chemistry and Molecular Engineering Zhengzhou UniversityHenan450001China

In recent years, the sodium storage mechanism and performance optimization of FeS2 have been studied intensively. However, before the commercial application of FeS2, preconditions of low-cost, simple craft and scale production of nanoscale FeS2 are also essential. Based on above challenges, mesh-like FeS2/carbon tube/FeS2 composites are prepared simply from green, low-cost and renewable natural herb in this work. With the assistance of protogenetic interconnected carbon tube network(only 5.3 wt%), FeS2/carbon tube/FeS2 composites show high capacity(542.2 mA h g^-1), good stability(lized by carbon tube network via physical encapsulation and chemical *** importantly, this work may provide green and low cost preparation method for specially structured metal sulfides/carbon composites,which promotes their commercial utilization in environmentally friendly energy storage system.

关键词： FeS2 Biomass-drived carbon Mesh-like structure Low cost Sodium-ion batteries

Carbon Isotope Excursions and Paleo-Oceanography of the Ordovician–Silurian Boundary Carbonate Rocks from the Xainza Area, Tibet

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Acta Geologica Sinica(English Edition) 2018年第5期92卷 2052-2054页

作者： YUAN Tao YI Haisheng ZHANG Shuai CAI Zhanhu li gaojie Sinopec Exploration Company Chengdu 610041 China Institute of Sedimentary Geology Chengdu University of Technology Chengdu 610059 China Minmetals Exploration & Development Co. LTD Beijing 100010 China College of Earth Sciences Chengdu University of Technology Chengdu 610059 China

Objective The Ordovician–Silurian transitional period is a special time when the global paleo-environment changed *** witnessed the first mass extinction as of Phanerozoic period and glaciations that occurred frequently at a large scale in a very short time,which has thus attracted much attention among geoscientists at home and abroad.

关键词： Carbon Isotope Excursions and Paleo-Oceanography of the Ordovician Silurian Boundary Carbonate Rocks from the Xainza Area Tibet GM

Nitrogen doped porous carbon-based bifunctional oxygen electrocatalyst with controllable phosphorus content for zinc-air battery

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Nano Research 2023年第4期16卷 5887-5893页

作者： Shichang Cai Zihan Meng gaojie li Yu An Yapeng Cheng Erjun Kan Bo Ouyang Haining Zhang Haolin Tang School of Material Science and Engineering Henan University of TechnologyZhengzhou 450001China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong LaboratoryXianhu Hydrogen ValleyFoshan 528200China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Applied Physics and Institution of Energy and Microstructure Nanjing University of Science and TechnologyNanjing 210094China

The controllable construction of non-noble metal based bifunctional catalysts with high activities towards oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is of great significance,but remains a ***,we reported an effective method to synthesize cobalt-nitrogen doped mesoporous carbon-based bifunctional oxygen electrocatalyst with controllable phosphorus content(Co-N-P_(X)-MC,X=0.5,1.0,1.5,2.0).The mesoporous carbon substrate endowed the asprepared samples with more exposed active surface(236.50 m^(2)·g^(−1))and the most appropriate doping ratio of phosphorus had been investigated to be 1.5(Co-N-P1.5-MC).For ORR,Co-N-P1.5-MC exhibited excellent catalytic activity with more positive onset potential(1.01 V)and half-wave potential(0.84 V)than the other *** OER,Co-N-P1.5-MC also showed a low overpotential of 415 *** experimental results and density-functional theory(DFT)calculations,the outstanding bifunctional catalytic performance of Co-N-P1.5-MC was due to the synergistic cooperation between the P and N dopants,which could reduce the reaction barriers and was favorable for ORR and ***,the Zn-air battery using Co-N-P1.5-MC as the cathode showed remarkable battery performance with high stability(could operate stably for over 160 h at 10 mA·cm^(−2))and maximum power density(119 mW·cm^(−2)),demonstrating its potential for practical *** work could provide significant enlightenment towards the design and construction of bifunctional oxygen electrocatalyst for next-generation electrochemical devices.

关键词： cobalt-nitrogen doped porous carbon phosphorus doping bifunctional electrocatalyst oxygen reduction reaction(ORR)and oxygen evolution reaction(OER) Zn-air battery

The Carbon Isotope Fluctuations across the Lower–Middle Jurassic Boundary and the Paleoclimate Changes

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Acta Geologica Sinica(English Edition) 2019年第1期93卷 244-245页

作者： YI Haisheng XIA Guoqing li gaojie YI Fan ZHANG Shuai CAI Zhanhu JIAO Haijing WU Chihua Institute of Sedimentary Geology Chengdu University of Technology College of Earth Sciences Chengdu University of Technology School of Marine Sciences Sun Yat-sen University

The Qiangtang Basin of Tibetan Plateau most widely outcrops marine Jurassic strata in China,even in eastern Asian,and the Jurassic strata and ammonites’occurrence are in favor of researching evolution of paleoceanography in the Tethyan region and global stratigraphic *** work focused on the carbon isotope changes across the J I–J 2 boundary in the eastern Tethys region.

关键词： Carbon strata Plateau marine carbon most

Influence of Si Contents on the Microstructure Evolution and Mechanical Properties of Al-Mg-Si-Cu-Zn Alloys

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Journal of Harbin Institute of Technology(New Series) 2020年第1期27卷 10-18页

作者： liang Zhu Mingxing Guo Jishan Zhang gaojie li Yu Wang linzhong Zhuang State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China Tata Steel 1970 CA IjmuidenNetherlands

The influence of different Si contents on the microstructure evolution and mechanical properties of Al⁃Mg⁃Si⁃Cu⁃Zn alloys was systematically studied using tensile testing,OM,SEM,EDS,and *** results indicate that the grain size of as⁃cast alloys was gradually reduced with the increase of the Si content,which mainly resulted from the formation of many iron⁃rich phases and precipitates during the casting *** homogenization treatment,the plate⁃likeβ⁃AlFeSi phases in the alloy with a higher Si content easily transformed to the sphericalα⁃Al(FeMn)Si phases,which is helpful for improving the formability of *** microstructure evolution of the alloys was also greatly dependent on the content of Si that the number density and homogeneous distribution level of precipitates in the final cold rolled alloys both increased with the increase of the Si content,which further provided a positive effect on the formation of fine recrystallization grains during the subsequent solution *** a result,the yield strength,ultimate tensile strength,and elongation of the pre⁃aged alloys in the direction of 45°with respect to the rolling direction were all increased with increasing Si content.

关键词： Al⁃Mg⁃Si⁃Cu⁃Zn alloy Mg/Si ratio microstructure evolution mechanical properties

The Greenhouse Climate Records from Organic Carbon Isotope Excursions During the Toarcian (Early Jurassic) Sediments in the Shuanghu Area, Qianghai-Tibetan Plateau

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Acta Geologica Sinica(English Edition) 2019年第3期93卷 776-777页

作者： YI Haisheng JI Changjun DA Xuejuan YI Fan XIA Guoqing li gaojie CHEN Lan JIAO Haijing WU Chihua Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059China Institute of Geological Mechanics Chinese Academy of Geological SciencesBeijing 100081China Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources Beijing 10003 7China Department of Earth Sciences Chongqing University of Science and TechnologyChongqing 401331China College of Earth Sciences Chengdu University of TechnologyChengdu 610059China School of Marine Sciences Sun Yat-sen UniversityGuangzhou 510006China

Objective The organic-matter-rich oil shales outcropped at the Biluo Co area of the Qiangtang Basin in Tibet are of the Toarcian(Early Jurassic)based on the ammonite fauna(Yi et al.,2003).We first proposed its sedimentary age to be the Early Toarcian and correlated with the Posidonia shales and the early Toarcian Oceanic Anoxic Event(TOAE)(Chen et al.,2005).The carbon isotopes excursions and Buchi bivalves suggest that these oil shales at the Biluo Co section are represent of T-OAE in the Asian Tethyan regions.

关键词： Greenhouse Climate Organic Carbon Qianghai-Tibetan Plateau

具有刚性约束随机非线性动力系统擦边现象的研究

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应用力学学报 2008年第4期25卷 551-555页

作者：李高杰徐伟王亮西北工业大学西安710072

利用Chebyshev多项式逼近法在单边约束条件下将带有随机参数的Duffing-van der Pol系统转化为与之等价的确定性系统,然后利用确定性系统的数值方法,研究了系统在擦边附近的动力学行为。研究表明,随机非光滑动力系统由擦边到混沌运动过程... 详细信息

利用Chebyshev多项式逼近法在单边约束条件下将带有随机参数的Duffing-van der Pol系统转化为与之等价的确定性系统,然后利用确定性系统的数值方法,研究了系统在擦边附近的动力学行为。研究表明,随机非光滑动力系统由擦边到混沌运动过程中,存在一个擦边区间。当控制参数完全经过这个区间时,随机系统才变为和确定性系统类似的混沌运动,而在这个区间内,随机系统经过一个由擦边运动到混沌再到擦边运动的反复过程。同时作者还发现,随机非光滑动力系统在擦边附近存在由随机因素诱发的倍周期分岔现象。

关键词：非光滑动力系统随机Duffing-van der Pol系统擦边现象单边约束

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基于图像识别的无人机导航系统设计

农机化研究 2021年第1期43卷 114-118页

作者：李高杰郑州财经学院郑州450000

无人机提高了农业生产效率,但作业性能受各方面因素的影响,而导航能力是重点关注的内容。图像识别技术通过分析图像中的大量信息来辨识目标,可以提高无人机的自动导航能力。固定翼无人机在飞行速度和高度上具有优势,进行农业信息监测和... 详细信息

无人机提高了农业生产效率,但作业性能受各方面因素的影响,而导航能力是重点关注的内容。图像识别技术通过分析图像中的大量信息来辨识目标,可以提高无人机的自动导航能力。固定翼无人机在飞行速度和高度上具有优势,进行农业信息监测和保险勘察时效率更高,但精准导航的难度较大。为此,设计了一个基于图像识别的无人机导航系统,以固定翼的航拍无人机为平台,搭载影像传感器拍摄图像,进行图像边缘检测和目标识别分析,获得空间定位和跑道识别的功能。同时,地面站根据分析结果生成飞行控制指令,无人机接收指令后通过舵面偏转调整飞行姿态,获得自主飞行和着陆能力。

关键词：无人机图像识别导航飞行姿态自主着陆农业

COVID-19救治医疗队驻地不同级别进入消毒流程在感染防控中的效果分析

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重庆医科大学学报 2020年第7期45卷 1031-1033页

作者：李高杰殷薇重庆医科大学附属第一医院手术室重庆400019

目的:分析新型冠状病毒肺炎(coronavirus disease 2019,COVID-19)救治医疗队驻地2种不同级别进入消毒流程在驻地感染防控中的实施效果。方法:以重庆医科大学附属第一医院援鄂医疗队160名队员为调查对象,在2种不同级别驻地进入消毒流程... 详细信息

目的:分析新型冠状病毒肺炎(coronavirus disease 2019,COVID-19)救治医疗队驻地2种不同级别进入消毒流程在驻地感染防控中的实施效果。方法:以重庆医科大学附属第一医院援鄂医疗队160名队员为调查对象,在2种不同级别驻地进入消毒流程实施期间,通过收集队员的不良上报情况及队员体温、健康状况、核酸检测情况综合分析得出结论。结果:高强度消毒流程实施10 d,各项不良上报均为0。简化后流程实施前7 d收到8例心理接受度不良上报,7 d后至结束各项不良上报均为0。隔离期内每日自主监测体温2次均无异常上报,2次核酸检测结果全部阴性。结论:简化后流程是更加科学、合理的消毒流程。面对新型冠状病毒(2019 novel coronavirus,2019-nCoV)的防控,要保持科学、理性的态度,采取正确、合理的措施,才能更加有利于安全。

关键词：新型冠状病毒肺炎感染防控医疗队驻地进入消毒流程

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水热法制备硫掺杂氧化锌及其气敏性能

河南科技大学学报（自然科学版） 2024年第3期45卷 17-23,31页

作者：杜凯李高杰河南科技大学物理工程学院河南洛阳471023

针对纯氧化锌(ZnO)禁带宽度高、气体灵敏度较低的问题,采用水热法以硫代乙酰胺为硫(S)源对氧化锌进行掺杂,制得氧化锌纳米片状结构。采用X射线衍射(XRD)、扫描电子显微镜(SEM)对硫掺杂氧化锌纳米材料进行表征,并进一步探究该材料的气敏... 详细信息

针对纯氧化锌(ZnO)禁带宽度高、气体灵敏度较低的问题,采用水热法以硫代乙酰胺为硫(S)源对氧化锌进行掺杂,制得氧化锌纳米片状结构。采用X射线衍射(XRD)、扫描电子显微镜(SEM)对硫掺杂氧化锌纳米材料进行表征,并进一步探究该材料的气敏性能。结果表明:相对于纯的氧化锌样品,不同的硫掺杂质量分数对氧化锌气敏性能的影响有所不同,其中硫掺杂质量分数1.57%,氧化锌结构的气敏性能最佳,对乙醇气体的灵敏度达到9.25,具有最短响应时间(14 s)和恢复时间(4 s)。

关键词：水热法氧化锌气敏硫掺杂灵敏度乙醇气体