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The Tunggurian Stage of the Continental Miocene in China

Acta Geologica Sinica(English Edition) 2007年第5期81卷 709-721页

作者： DENG Tao HOU Sukuan wang hongjiang Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 Graduate School of the Chinese Academy of Sciences Beijing 100039 Station of Cultural Relic Protection and Management of Xilin Gol League Xilinhot 026000 Inner Mongolia

The Tunggurian Age was nominated in 1984, and the Second National Commission on Stratigraphy of China formally suggested establishing the corresponding chronostratigraphic unit, the Tunggurian Stage, based on the Tunggurian Age in 1999. The name of this stage comes from a lithostratigraphic unit, the Tunggur Formation, and the stratotype section is located at the Tunggur tableland, 15 km southeast of Saihan Gobi Township, Sonid Left Banner, Inner Mongolia. The Tunggurian Age is correlated to the Astaracian of the European land mammal ages, and they share the same definition of the lower boundary at the base of the paleomagnetic Chron C5Bn.1r with an age of 15.0 Ma. In the Tairum Nor section on the southeastern edge of the Tunggur tableland, this boundary is situated within the successive deposits of reddish-brown massive mudstone of the lower part of the Tunggur Formation, with a distance of 7.6 m from the base of the grayish-white sandstones in the middle part of the section. The Tunggurian is approximately correlated to the upper part of the marine Langhian and the marine Serravallian in the International Stratigraphical Chart. The Tunggurian Stage includes two Neogene mammal faunal units, i.e. NMU 6 （MN 6） and NMU 7 （MN 7/8）. The Tairnm Nor fauna from the Talrnm Nor section corresponds to NMU 6, and the Tunggur fauna （senso stricto） from the localities on the northwestern edge of the Tunggur tableland, such as Platybelodon Quarry, Wolf Camp and Moergen, corresponds to NMU 7. Among the Middle Miocene mammalian faunas in China, the Laogou fauna from the Linxia Basin, Gansu, the Quantougou fauna from the Lanzhou Basin, Gansu, the Halamagai fauna from the northern Junggar Basin, Xinjiang, and the Dingjiaergou fauna from Tongxin, Ningxia correspond to NMU 6.

关键词： Tunggurian Miocene stratotype biostratigraphic unit paleomagnetic age China

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Research on the IL-Bagging-DHKELM Short-Term Wind Power Prediction Algorithm Based on Error AP Clustering Analysis

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Computers, Materials & Continua 2024年第6期79卷 5017-5030页

作者： Jing Gao Mingxuan Ji hongjiang wang Zhongxiao Du School of Electric Power Shenyang Institute of EngineeringShenyang100083China

With the continuous advancement of China’s“peak carbon dioxide emissions and Carbon Neutrality”process,the proportion of wind power is *** the current research,aiming at the problem that the forecasting model is outdated due to the continuous updating of wind power data,a short-term wind power forecasting algorithm based on Incremental Learning-Bagging Deep Hybrid Kernel Extreme Learning Machine(IL-Bagging-DHKELM)error affinity propagation cluster analysis is *** algorithm effectively combines deep hybrid kernel extreme learning machine(DHKELM)with incremental learning(IL).Firstly,an initial wind power prediction model is trained using the Bagging-DHKELM ***,Euclidean morphological distance affinity propagation AP clustering algorithm is used to cluster and analyze the prediction error of wind power obtained from the initial training ***,the correlation between wind power prediction errors and Numerical Weather Prediction(NWP)data is introduced as incremental updates to the initial wind power prediction *** the incremental learning process,multiple error performance indicators are used to measure the overall model performance,thereby enabling incremental updates of wind power *** examples show the method proposed in this article reduces the root mean square error of the initial model by 1.9 percentage points,indicating that this method can be better adapted to the current scenario of the continuous increase in wind power penetration *** accuracy and precision of wind power generation prediction are effectively improved through the method.

关键词： Short-term wind power prediction deep hybrid kernel extreme learning machine incremental learning error clustering

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Correlative Mechanism of Hydraulic-mechanical Property in Cemented Paste Backfill

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Journal of Wuhan University of Technology(Materials Science) 2017年第3期32卷 579-585页

作者：王勇吴爱祥 wang Shaoyong wang hongjiang YANG Liuhua wang Yiming RUAN Zhu'en Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education University of Science and Technology Beijing Beijing 100083 China School of Civil and Resource Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology Xuzhou 221116 China

Hydraulic characteristic is a good indication of binder hydration, which determines the strength development of cemented paste backfill（CPB）. Therefore, the hydraulic characteristic should be communicated with the mechanical property to provide an advanced knowledge that can help mine workers make a rational strategy and reduce the mining cycle. An experimental program was performed to obtain the hydraulic（monitored by suction and volumetric water content） and mechanical properties（unconfined compressive strength（UCS） test） of CPB at the 28 days curing age. According to the monitoring and testing results, the relationships between the hydration reaction rate and volumetric water content（VWC）, suction and VWC, suction and UCS were established. The hydration degree showed a liner rise as the VWC decreased. Curves of the VWC and UCS were featured with a nonlinear reduction and nonlinear growth（both are exponential functions） as the suction rising, respectively. These established relationships validated the strong correlative mechanism of hydraulic and mechanics behavior for CPB. Also, the results of the present research indicated that the hydraulic characteristics and mechanical property were strongly coupled. These correlations and couplings will be of great importance to understand the hardening process of CPB and bring to a safe CPB field operation.

关键词： cemented paste backfill mine hydraulic volumetric water content suction strength

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Research on pedestrian escape route without visibility based on Markov chain model

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Frontiers of Chemical Science and Engineering 2010年第3期4卷 283-289页

作者： Xiaoping ZHENG Lijuan DU hongjiang wang Institute of Safety Management Beijing University of Chemical TechnologyBeijing 100029China Department of Human Resource Qingdao UniversityQingdao 266071China

It is a pioneering work to use a Markov chain model to study the pedestrian escape route without *** this paper,based on the Markov chain probability transition matrix,the algorithms with random numbers and the spatial-grid,an escape route in a limited invisible space is *** pace states(standing,crawling,walking,leaping,jogging,and running)are applied to describe the characteristics of pedestrian ***,eight main direction changes are used to describe the transition characteristic of a *** the same time,this paper analyzes the escape route from two views,i.e.,pedestrian pace states and *** research results show that the Markov chain model is more realistic as a means of studying pedestrian escape routes.

关键词： escape route cumulative probability transition matrix pace state pedestrian behavior

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Study on Performance Regulation and Mechanism of Quicklime and Biopolymer on Hemihydrate Phosphogypsum

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Journal of Renewable Materials 2022年第2期10卷 373-384页

作者： Zaibo Zhou Juanhong Liu Kun Luo Aixiang Wu hongjiang wang College of Civil and Resource Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Urban Underground Space Engineering University of Science and Technology BeijingBeijing100083China State Key Laboratory of High-Efficient Mining and Safety of Metal Mines Ministry of EducationUniversity of Science and Technology BeijingBeijing100083China

In order to reduce the influence of impurities in hemihydrate phosphogypsum(HPG)on the environment and improve the workability of HPG,the effects of the content of quicklime and types of biopolymer(hydroxypropyl methylcellulose,xanthan gum,sodium polyacrylate(PAANa))on the compressive strength,softening coefficient and ultrasonic velocity of HPG were *** the content of quicklime was 1.5%and the content of PAA-Na was 0.2%,HPG had the best mechanical properties and workability,its water retention rate can be increased by 5.8%,and unconfined compressive strength of 3 days increased by 10.3%and 7 days increased by 13.1%.Through the analysis of scanning electron microscope and X-ray diffraction,it was found that the hydration reac-tion of HPG was more sufficient,the pores size and number decreased,the number of impurities on the crystal surface decreased obviously,and CaF2 and other substances were formed by the reaction after the addition of *** adding quicklime and PAANa,the indicators of gypsum self-leveling mortar prepared by HPG meet the requirements of the standard.

关键词： Hemihydrate phosphogypsum quicklime biopolymer mechanical properties workability gypsum self-leveling mortar

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Research and Application Status and Development Trend of Alkali-Activated Binder Powder for Mine Backfill

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Journal of Renewable Materials 2022年第12期10卷 3185-3199页

作者： Qian Zhou Yueyue Zhang Juanhong Liu Aixiang Wu hongjiang wang School of Civil and Resource Engineering University of Science and Technology BeijingBeijing100083China Key Laboratory of the Ministry of Education of China High-Efficient Mining and Safety of Metal Mines Beijing100083China Beijing Key Laboratory of Urban Underground Space Engineering Beijing100083China

To improve the economic and social benefits of mining and backfill,it is necessary to find the backfill materials suitable for mineral mining,improve the various properties of the filling materials,and develop low cost,high performance new filling *** cement is neither environmentally friendly nor ***,we have begun to study and apply some industrial waste,such as slag,fly ash,and other solid wastes,with certain activities as the primary component of cementing material that will not only meet the technical requirements of filling,but also comprehensively utilize industrial waste and possess a benign,sustainable lifecycle for environmental *** study expounds the composition and reaction mechanism of alkali-activated binder powder used for cemented paste backfill material,summarizes the research and application status of alkaliactivated binder powders,including mechanics,durability,economic and environmental,and discusses future development directions for mine binder *** needs to continue to expand the utilization range of solid waste and improve the utilization rate of solid waste in the *** development and research of this binder powder plays an important role in the progress of filling ***,the research about alkali-activated binder powder contains great development potential and broad prospects.

关键词： Mine backfill paste industrial waste binder powder green environmental protection

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膏体充填多孔等量泄流原理试验研究

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矿业研究与开发 2025年第2期45卷 90-96页

作者：王勇兵白龙剑王洪江袁龙森张润芳石宏伟滕高礼云南驰宏锌锗股份有限公司云南曲靖市654212 北京科技大学土木与资源工程学院北京100083 紫金矿业集团股份有限公司福建龙岩市364299

充填管道多孔等量泄流技术能够消除由膏体自流坡度形成的未接顶空区,提升采场接顶效果,避免顶板下沉问题。首先,通过理论分析初步确定多孔等流量泄流管道沿程水头损失和各泄流孔处的压力水头,并基于此得到泄流孔直径。然后,采用自主研... 详细信息

充填管道多孔等量泄流技术能够消除由膏体自流坡度形成的未接顶空区,提升采场接顶效果,避免顶板下沉问题。首先,通过理论分析初步确定多孔等流量泄流管道沿程水头损失和各泄流孔处的压力水头,并基于此得到泄流孔直径。然后,采用自主研发的多孔等量泄流试验装置,通过试验研究了入口流量、开孔个数和孔间距对等量泄流效果的影响。最后,采用数值模拟方法分析了泄流管道的压强和流量变化规律。结果表明:泄流孔间距对泄流孔的泄流均匀度影响最显著,其次为开孔个数;孔间距为14.5 cm、入口流量为330 mL/h、开孔个数为6个时,泄流均匀度高达96%。膏体在水平管段流动时,管道静压沿流动方向呈下降趋势,在泄流孔口处出现负压,且越靠近膏体入口端的泄流孔处压强差越大;膏体达到稳定状态后各泄流孔出流量基本一致,均匀度系数达98.8%,即膏体可以实现多孔等量泄流。

关键词：膏体充填等量泄流孔间距自流坡度接顶率

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Evolutionary Variational YOLOv8 Network for Fault Detection in Wind Turbines

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Computers, Materials & Continua 2024年第7期80卷 625-642页

作者： hongjiang wang Qingze Shen Qin Dai Yingcai Gao Jing Gao Tian Zhang College of Information Shenyang Institute of EngineeringShenyang110136China Graduate School Shenyang Institute of EngineeringShenyang110136China College of Software Northeastern UniversityShenyang110169China

Deep learning has emerged in many practical applications,such as image classification,fault diagnosis,and object *** recently,convolutional neural networks(CNNs),representative models of deep learning,have been used to solve fault ***,the current design of CNNs for fault detection of wind turbine blades is highly dependent on domain knowledge and requires a large amount of trial and *** this reason,an evolutionary YOLOv8 network has been developed to automatically find the network architecture for wind turbine blade-based fault ***8 is a CNN-backed object detection ***,to reduce the parameter count,we first design an improved FasterNet module based on the Partial Convolution(PConv)***,to enhance convergence performance,we improve the loss function based on the efficient complete intersection over the *** on this,a flexible variable-length encoding is proposed,and the corresponding reproduction operators are *** experimental results confirmthat the proposed approach can achieve better fault detection results and improve by 2.6%in mean precision at 50(mAP50)compared to the existing ***,compared to training with the YOLOv8n model,the YOLOBFE model reduces the training parameters by 933,937 and decreases the GFLOPS(Giga Floating Point Operations Per Second)by 1.1.

关键词： Neural architecture search YOLOv8 evolutionary computation fault detection

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Accelerating column leaching trial on copper sulfide ore

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Rare Metals 2008年第1期27卷 95-100页

作者： wang hongjiang WU Aixiang ZHOU Xun wang Shaoyong ZHANG Jie Civil and Environment Engineering School University of Science and Technology Beifing Beifing 100083 China School of Resource and Safety Engineering Central South University Changsha 410083 China

The main measures to accelerate leaching sulfide ore are large spraying intensity,manual oxygen supply,temperature control,and acclimated *** indoor experiment accelerating sulfide ore leaching detected the temperature during leaching process,dissolvability of oxygen,bacterial concentration,Cu concentration and slag *** the same time,this paper also analyzed the effect of four factors,which are bacterial diversity cultivation stage,spraying intensity,air supply,and whether to control temperature,on the leaching efficiency of *** results indicate that the oxygen content of leach solution has a close relationship with temperature but it is rarely affected by air *** bacterial concentration preserves from 106 to 107 mL^-1,and temperature has a great effect on the bacterial activity under the condition of proper temperature and oxygen supply,and the lack of nutrition prevents the bacterial concentration from rising in the late *** relationships of the copper leaching efficiency to temperature,air feed,and spraying intensity are directly *** leaching efficiencies of the cultivated bacteria and acclimation bacteria are 1.2 and 1.4 times as large as that of the original bacteria.

关键词： accelerating leaching spraying intensity manual air supply temperature control bacterial cultivation

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Recovery and Genetic Characterization of a West Nile Virus Isolate from China

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Virologica Sinica 2021年第1期36卷 113-121页

作者： Yan Guo hongjiang wang Songtao Xu Hangyu Zhou Chao Zhou Shihong Fu Mengli Cheng Fan Li Yongqiang Deng Xiaofeng Li Huanyu wang Cheng-Feng Qin Department of Virology State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyAcademy of Military Medical Sciences(AMMS)Beijing 100071China PLA Strategic Support Force Characteristic Medical Center Beijing 100071China Department of Arbovirus NHC Key Laboratory of BiosafetyNational Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China State Key Laboratory for Infectious Disease Prevention and Control Chinese Center for Disease Control and PreventionBeijing 102206China Suzhou Institute of System Medicine Chinese Academy of Medical Sciences and Peking Union Medical CollegeSuzhou 215000China Department of Immunology Key Laboratory of Immune Microenvironment and DiseaseNanjing Medical UniversityNanjing 211166China

West Nile virus(WNV)is an important neurotropic flavivirus that is widely distributed *** strain XJ11129 was first isolated in Xinjiang,China,and its genetic and biological characteristics remain largely *** this study,phylogenetic and sequence analyses revealed that XJ11129 belongs to lineage 1 a and shares high genetic identity with the highly pathogenic strain ***,the full-length genomic c DNA of XJ11129 was amplified and assembled using a modified Gibson assembly(GA)*** virus(named r XJ11129)was successfully rescued in days following this *** with other wild-type WNV isolates,r XJ11129 exhibited virulence indistinguishable from that of the NY99 strain in *** summary,the genomic and virulence phenotypes of r XJ11129 were characterized in vivo and in vitro,and these data will improve the understanding of the spread and pathogenesis of this reemerging virus.

关键词： WNV isolates from China Phylogenetic analysis GA method Biological characteristic

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