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Key technology of mine underground mobile positioning based on liDAR and coded sequence pattern

中国有色金属学会会刊：英文版 2011年第S3期21卷 570-576页

作者： wang zhi1, 2, wu li-xin1, 2, li hui-ying3.1. college of resources and civil engineering, northeastern University, shenyang 110004, china 2. Academy of Disaster Reduction and Emergency Management, Ministry of civil Affairs and Ministry of Education, Beijing Normal University, Beijing 100875, china 3. college of Computer Science and Technology, Jilin University, Changchun 13.012, china [a] college of resources and civil {3. Northeastern University Shenyang 110004 China [b] Academy of Disaster Reduction and Emergency Management Ministry of Civil Affairs and Ministry of Education Beijing Normal University Beijing 100875 China [c] college of Computer Science and Technology Jilin University Changchun 130012 China

Technologies of underground mobile positioning were proposed based on liDAR data and coded sequence pattern landmarks for mine shafts and tunnels environment to meet the needs of fast and accurate positioning and navigation of equipments in the mine underground without satellite navigation signals. A coded sequence pattern was employed for automatic matching of 3. scans. The methods of SIFT feature, Otsu segmentation and fast hough transformation were described for the identification, positioning and interpretation of the coded sequence patterns, respectively. The POSIT model was presented for speeding up computation of the translation and rotation parameters of liDAR point data, so as to achieve automatic 3. mapping of mine shafts and tunnels. The moving positioning experiment was applied to evaluating the accuracy of proposed pose estimation method from liDAR scans and coded sequence pattern landmarks acquired in an indoor environment. The performance was evaluated using ground truth data of the indoor setting so as to measure derivations with six degrees of freedom.

关键词： liDAR coded sequence pattern mobile positioning SLAM algorithm POSIT algorithm

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Terrain classification based on adaptive weights with airborne liDAR data for mining area

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中国有色金属学会会刊：英文版 2011年第S3期21卷 648-653页

作者： li hui-ying1, {3. zhi2, SUN Ya-feng1, li Wen-hui1 1. college of Computer Science and Technology, Jilin University, Changchun 13.012, china 2. college of resources and civil {13., northeastern University, shenyang 110004, china [a] college of Computer Science and Technology Jilin University Changchun 130012 China [b] college of resources and civil {3. Northeastern University Shenyang 110004 China

The fast high-efficiency inspection for mining subsidence of mine area is a reliable way for forecasting accident and evaluating losing expense. In order to monitor mining subsidence of exploitation mine efficiently, liDAR data were used and a novel strip division method was brought forward based on separating-treatment theory, which divided the mass of discrete three-dimensional point cloud data into a series of parallel strips and reduced the dimension in each strip. Polynomial fitting algorithm based on the adaptive weights, which located in the range of the strip, was used for classification complex terrain data of mine-area. The results show that liDAR datamation can be greatly reduced. In the mean time, the time spending for calculation is shortened, and computational complexity is simplified. Therefore, high-efficiency terrain classification of liDAR point cloud method can be great beneficial to monitoring environment of mine area.

关键词： mining subsidence airborne liDAR strip division adaptive weights

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Mechanical parameter evolutions and deterioration constitutive model for ductile-brittle failure of surrounding rock in high-stress underground engineering

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Underground Space 2024年第2期15卷 131-152页

作者： zhi Zheng Ronghua li Qiang Zhang Xiaohua Huang Wei wang Shuling Huang State Key Laboratory of Featured Metal Materials and life-cycle Safety for Composite Structures Key Laboratory of Disaster Prevention and Structural Safety of Ministry of EducationCollege of Civil Engineering and ArchitectureGuangxi UniversityNanning 530004China Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Northeastern UniversityShenyang 110819China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing 100038China Key Laboratory of Ministry of Education for Geomechanics and Embankment engineering Hohai UniversityNanjing 210098China Key Laboratory of Geotechnical Mechanics and engineering of Ministry of Water resources Yangtze River Scientific Research InstituteWuhan 430010China

The deep surrounding rock is usually in the true triaxial stress state,and previous constitutive models based on the understanding of uniaxial and conventional triaxial test results have difficulty characterizing the degradation and fracture process of rock ductile–brittle failure under true triaxial stress ***,this study conducted a series of true triaxial tests to obtain the understanding of the ductile–brittle behaviour of rock,and then combined the test results and the Mogi–Coulomb strength criterion,and proposed calculation methods for the elastic modulus E,cohesion c and internal friction angle u and the evolution functions of E,c and u of rock under true triaxial *** the decreasing of the minimum principal stress r3.or increasing of the intermediate principal stress r2,the marble post-peak stress drop rate gradually increases,the ductility gradually weakens,and the brittleness significantly *** calculation method and evolution function of rock E,c and u under true triaxial stress were proposed.E decreased at first and then tended to remain stable with the increasing of equivalent plastic strain increment dep.c and u slowly increased at first and then rapidly *** a method of parameter degradation rate to realize post-peak stress drop rate to reflect the ductile–brittle characteristics,a new three-dimensional ductile–brittle deterioration mechanical model(3.BDM)was *** proposed model can accurately characterize the influence of r2 and r3.on mechanical parameters,the ductile–brittle behaviour of rock under true triaxial stresses,and the asymmetric failure characteristics of surrounding rock after excavation of deep underground *** proposed model can be reduced to elastic–perfectly plastic,elastic–brittle,cohesion weakening friction strengthening(CWFS),Mohr–Coulomb,and Drucker–Prager models.

关键词： True triaxial stress Post-peak characteristics 3. deterioration model Elastic modulus evolution Cohesion and friction angle evolution

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MXene:Promising materials for magnesium-ion batteries

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Chinese Journal of Chemical engineering 2024年第5期69卷 199-211页

作者： liuyu Song Haibo li Pengkai wang Yu Shang Yue Yang Zhaoyu {3. School of resources and civil engineering Northeastern UniversityShenyang 110004China

Magnesium-ion batteries(MIBs)have attracted extensive attention due to their high theoretical capacity,superior safety,and low ***,the development of MIBs is hindered by the lack of cathode materials with long cycle life and rate *** stands out as a prime choice for MIB cathode or collector for anode-free magnesium batteries(AFMBs)because of its larger surface area,adjustable surface properties,and good electrical *** this paper,we summarized the preparation and layering methods of MXene and discussed the prospects of MXene as a cathode or collector for *** review will be immensely beneficial in critically analyzing the synthesis techniques and the applications of MXene material as MIB cathode or AFMB *** addition,the challenges of the preparation and layering were concluded,along with raising the research strategies of MXene for storing Mg ions.

关键词： MXene Nanomaterials Electrochemistry Optimization Magnesium-ion batteries(MIBs)

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Vision navigation algorithm for mine agent based on quaternion

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中国有色金属学会会刊：英文版 2011年第S3期21卷 610-615页

作者： li Ke-zhao1, 4, LEI Wei-wei1, 2, GUO Zeng-zhang1, 2, {3. li-xin3. ZHANG Qin4 1. School of Survey and Land Information engineering, Henan Polytechnic University, Jiaozuo 454003. china 2. Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping, Henan Polytechnic University, Jiaozuo 454003. china 3. college of resources and civil engineering, northeastern University, shenyang 110819, china 4. college of Geology engineering and Geomatics, Chang’an University, Xi’an 710054, china [a] School of Survey and Land Information engineering Henan Polytechnic University Jiaozuo 454003 China [b] Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping Henan Polytechnic University Jiaozuo 454003 China [c] college of resources and civil {3. Northeastern University Shenyang 110819 China [d] college of Geology engineering and Geomatics Chang'an University Xi'an 710054 China

Autonomous relative navigation is the key technology in mining or rescuing. On the basis of mine requirement and the theories of machine vision, an autonomous relative navigation algorithm for mine agent based on quaternion was proposed. In rotation transformation, this algorithm was represented by using quaternion. Because the Jacobi matrix of this method is lower than that of Hall algorithm, the calculation efficiency is improved by using this algorithm. The results of these experiments show that the computation burden of this algorithm based on quaternion is about half that of Hall algorithm. This algorithm based on quaternion is improved as a valid way to solve the problem of mine real-time navigation.

关键词： quaternion mine agent vision navigation

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The microbial community,nutrient supply and crop yields differ along a potassium fertilizer gradient under wheat-maize double-cropping systems

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Journal of Integrative Agriculture 2024年第10期23卷 3592-3609页

作者： Zeli li Fuli Fang liang wu Feng Gao Mingyang li Benhang li Kaidi wu Xiaomin Hu Shuo wang Zhanbo Wei Qi Chen Min Zhang zhiguang liu Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection College of Resources andEnvironmentLinyi UniversityLinyi 276000China National engineering Research Center for Efficient Utilization of Soil and Fertilizer {3. College of Resources and theEnvironmentShandong Agricultural UniversityTai’an 271018China Key Laboratory of Crop Specific Fertilizer Ministry of Agriculture and Rural Affairs/Xinyangfeng Agricultural Technology Co.Ltd.Jingmen 448001China Institute of Applied Ecology Chinese Academy of SciencesShenyang 110000China

Soil microorganisms play critical roles in ecosystem ***,the relative impact of the potassium(K)fertilizer gradient on the microbial community in wheat-maize double-cropping systems remains *** this long-term field experiment(2008-2019),we researched bacterial and fungal diversity,composition,and community assemblage in the soil along a K fertilizer gradient in the wheat season(K0,no K fertilizer;K1,45 kg ha^(-1) K_(2)O;K_(2),90 kg ha^(-1)K_(2)O;K{3.3. kg ha^(-1)K_(2)O)and in the maize season(K0,no K fertilizer;K_(1),150 kg ha^(-1) K_(2)O;K_(2),3.0 kg ha^(-1)K_(2)O;K_(3.,450 kg ha^(-1)K_(2)O)using bacterial 16S rRNA and fungal internally transcribed spacer(ITS)*** observed that environmental variables,such as mean annual soil temperature(MAT)and precipitation,available K,ammonium,nitrate,and organic matter,impacted the soil bacterial and fungal communities,and their impacts varied with fertilizer treatments and crop ***,the relative abundance of bacteria involved in soil nutrient transformation(phylum Actinobacteria and class Alphaproteobacteria)in the wheat season was significantly increased compared to the maize season,and the optimal K fertilizer dosage(K2 treatment)boosted the relative bacterial abundance of soil nutrient transformation(genus Lactobacillus)and soil denitrification(phylum Proteobacteria)bacteria in the wheat *** abundance of the soil bacterial community promoting root growth and nutrient absorption(genus Herbaspirillum)in the maize season was improved compared to the wheat season,and the K2 treatment enhanced the bacterial abundance of soil nutrient transformation(genus MND1)and soil nitrogen cycling(genus Nitrospira)genera in the maize *** results indicated that the bacterial and fungal communities in the double-cropping system exhibited variable sensitivities and assembly mechanisms along a K fertilizer gradient,and microhabitats explained the largest amount of the variation in crop yields,a

关键词： potassium fertilizer gradient microbial community wheat-maize double cropping climate change yield

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A VGGNet-based correction for satellite altimetry-derived gravity anomalies to improve the accuracy of bathymetry to depths of 6500 m

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Acta Oceanologica Sinica 2024年第1期43卷 112-122页

作者： Xiaolun Chen Xiaowen Luo Ziyin wu Xiaoming Qin Jihong Shang Huajun Xu Bin li Mingwei wang Hongyang Wan Key Laboratory of Submarine Geosciences Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Ocean college Zhejiang UniversityZhoushan 316021China Key Laboratory of Ocean Space resources Management Technology Marine Academy of ZhejiangHangzhou 310012China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200240China School of civil engineering and Architectures Zhejiang University of Science and TechnologyHangzhou 310023China National Center for Archaeology Beijing 100013China

Understanding the topographic patterns of the seafloor is a very important part of understanding our *** the science involved in bathymetric surveying has advanced much over the decades,less than 20%of the seafloor has been precisely modeled to date,and there is an urgent need to improve the accuracy and reduce the uncertainty of underwater survey *** this study,we introduce a pretrained visual geometry group network(VGGNet)method based on deep *** apply this method,we input gravity anomaly data derived from ship measurements and satellite altimetry into the model and correct the latter,which has a larger spatial coverage,based on the former,which is considered the true value and is more *** obtaining the corrected high-precision gravity model,it is inverted to the corresponding bathymetric model by applying the gravity-depth *** choose four data pairs collected from different environments,i.e.,the Southern Ocean,Pacific Ocean,Atlantic Ocean and Caribbean Sea,to evaluate the topographic correction results of the *** experiments show that the coefficient of determination(R~2)reaches 0.83. among the results of the four experimental groups,signifying a high *** standard deviation and normalized root mean square error are also evaluated,and the accuracy of their performance improved by up to 24.2%compared with similar research done in recent *** evaluation of the R^(2) values at different water depths shows that our model can achieve performance results above 0.90 at certain water depths and can also significantly improve results from mid-water depths when compared to previous ***,the bathymetry corrected by our model is able to show an accuracy improvement level of more than 21%within 1%of the total water depths,which is sufficient to prove that the VGGNet-based method has the ability to perform a gravity-bathymetry correction and achieve outstanding results.

关键词： gravity anomaly bathymetry inversion VGGNet multibeam sonar satellite altimetry

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Research progress of alkaline earth metal iron-based oxides as anodes for lithium-ion batteries

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Journal of Semiconductors 2024年第2期45卷 21-33页

作者： Mingyuan Ye Xiaorui Hao Jinfeng Zeng lin li Pengfei wang Chenglin Zhang li liu Fanian Shi Yuhan wu School of Environmental and Chemical engineering Shenyang University of TechnologyShenyang 110870China college of Materials Science and engineering Nanjing Tech UniversityNanjing 211816China college of Pharmacy Xinjiang Medical UniversityEngineering Research Center of Xinjiang and Central Asian Medicine Resources(Ministry of Education)Urumqi 830000China Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China School of Physics and Electronic engineering Jiangsu UniversityZhenjiang 212013China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Anode materials are an essential part of lithium-ion batteries(liBs),which determine the performance and safety of ***,graphite,as the anode material of commercial liBs,is limited by its low theoretical capacity of 3.2 mA·h·g^(−1),thus hindering further development toward high-capacity and large-scale *** earth metal iron-based oxides are considered a promising candidate to replace graphite because of their low preparation cost,good thermal stability,superior stability,and high electrochemical ***,many issues and challenges remain to be ***,we systematically summarize the research progress of alkaline earth metal iron-based oxides as liB ***,the material and structural properties,synthesis methods,electrochemical reaction mechanisms,and improvement strategies are ***,existing challenges and future research directions are discussed to accelerate their practical application in commercial liBs.

关键词： alkali-earth metal iron-based oxides anodes lithium-ion batteries electrochemical energy storage

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Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo ying Bryan WBrooks Deyi Hou Damian EHelb{3.ng Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwa{3. Xiankui Zeng Haijun wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu wang A{3. El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu huizhong Shen Yanpeng Gao Chao Qin Hao {3. Tong Zhang Natà{3.a Corcoll Min {3.u Daniel SAlessi hui {3. Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Phi{3.ppe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun wu Wil{3.e Peijnenburg Edward Topp xinde Cao xin Jiang Minghui Zheng Tao{3.n Zhang Yongming Luo {3.zhong Zhu Xiangdong {3. DamiàBarceló Jianmin Chen Baoshan xing wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Paw{3.szyn Yong-guan Zhu Andreas Schaeffer Matthias C.Ril{3.g Fengchang wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of civil and Environmental engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

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Complex ammonium oxidation demands visualized resolution

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Science Bulletin 2024年第16期69卷 2478-2482页

作者： zhihao Chen Yonghong wu Jan Dolfing Shunyao Zhuang Baozhan wang Dan {3. Shan Huang Bruce E.Rittmann State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Zigui Three Gorges Reservoir Ecosystem Observation and Research Station of Ministry of Water Resources of the People’s Republic of ChinaYichang 443605China University of Chinese Academy of Sciences Beijing 100049China d college of Nanjing University of Chinese Academy of SciencesNanjing 211135China Faculty of Energy and Environment Northumbria UniversityNewcastle-upon-Tyne NE18QHUK Department of Microbiology College of Life SciencesNanjing Agricultural UniversityKey Laboratory of Agricultural and Environmental MicrobiologyMinistry of Agriculture and Rural AffairsNanjing 210095China college of Urban Construction Nanjing Tech UniversityNanjing 211816China Department of civil and Environmental engineering Princeton UniversityPrinceton NJ 08540USA Biodesign Swette Center for Environmental Biotechnology Arizona State UniversityTempe AZ 85287-5701USA

The nitrogen cycle plays a vital role in sustaining productive and healthy ecosystems,with the microbial nitrogen cycle being a focal point in agriculture and eco-environmental *** these microbially mediated processes is ammonium(NH_(4)^(+))oxidation,the gatekeeper of the nitrogen *** understanding of ammonium oxidation is continuously evolving,thanks to recent research breakthroughs like comammox,Feammox,and dirammox[1-6].The increasing complexity of ammonium oxidation necessitates more precise and well-focused research tools beyond those commonly used today.

关键词： ammonium breakthrough precise

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