Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 34501 - 34530 of 302419

Full-Text Articles in Physical Sciences and Mathematics

Assessing Feed Gaps On Smallholder Livestock Farms In Limpopo: Production System And Coping Strategies, S. A. Lamega, M. Komainda, M. P. Hoffmann, J. J. Odhiambo, K. K. Ayisi, J. Isselstein Jan 2022

Assessing Feed Gaps On Smallholder Livestock Farms In Limpopo: Production System And Coping Strategies, S. A. Lamega, M. Komainda, M. P. Hoffmann, J. J. Odhiambo, K. K. Ayisi, J. Isselstein

IGC Proceedings (1993-2023)

Smallholder farms in southern Africa are predominantly mixed crop-livestock systems and often characterized by low productivity. Therefore, providing sufficient forage becomes a challenge that results first in feed gaps, i.e. the difference between the demand for and supply of forage, and secondly, in nutrient mining of the soil due to the overuse of the resources. However, the availability of forage follows potentially seasonal patterns. Hence, a key entry point for any intervention strategies for improvement is an assessment of forage quantity and quality throughout the year. Against this background, we investigated six locations, smallholders’ cattle production systems and their adaptation …

Go to article

Identification Of Alternative Protein Targets Of Glutamate-Ureido-Lysine Associated With Psma Tracer Uptake In Prostate Cancer Cells, Martin K. Bakht, John J. Hayward, Farsheed Shahbazi-Raz, Magdalena Skubal, Ryo Tamura, Keith F. Stringer, Daniel Meister, Varadha Balaji Venkadakrishnan, Hui Xue, Adam Pillon, Mathew Stover, Adam Tronchin, Bre Anne Fifield, Lavleen Mader, Sheng Yu Ku, Gi Jeong Cheon, Keon Wook Kang, Yuzhuo Wang, Xuesen Dong, Himisha Beltran, Jan Grimm, Lis A. Porter, John F. Trant Jan 2022

Identification Of Alternative Protein Targets Of Glutamate-Ureido-Lysine Associated With Psma Tracer Uptake In Prostate Cancer Cells, Martin K. Bakht, John J. Hayward, Farsheed Shahbazi-Raz, Magdalena Skubal, Ryo Tamura, Keith F. Stringer, Daniel Meister, Varadha Balaji Venkadakrishnan, Hui Xue, Adam Pillon, Mathew Stover, Adam Tronchin, Bre Anne Fifield, Lavleen Mader, Sheng Yu Ku, Gi Jeong Cheon, Keon Wook Kang, Yuzhuo Wang, Xuesen Dong, Himisha Beltran, Jan Grimm, Lis A. Porter, John F. Trant

Chemistry and Biochemistry Publications

Prostate-specific membrane antigen (PSMA) is highly overexpressed in most prostate cancers and is clinically visualized using PSMA-specific probes incorporating glutamate-ureido-lysine (GUL). PSMA is effectively absent from certain high-mortality, treatment-resistant subsets of prostate cancers, such as neuroendocrine prostate cancer (NEPC); however, GUL-based PSMA tracers are still reported to have the potential to identify NEPC metastatic tumors. These probes may bind unknown proteins associated with PSMA-suppressed cancers. We have identified the up-regulation of PSMA-like aminopeptidase NAALADaseL and the metabotropic glutamate receptors (mGluRs) in PSMA-suppressed prostate cancers and find that their expression levels inversely correlate with PSMA expression and are associated with GUL-based …

Go to article

Tile Drainage Flow Partitioning And Phosphorus Export In Vermont Usa, Ryan Ruggiero, Donald Ross, Joshua W. Faulkner Jan 2022

Tile Drainage Flow Partitioning And Phosphorus Export In Vermont Usa, Ryan Ruggiero, Donald Ross, Joshua W. Faulkner

Lake Champlain Sea Grant Institute

Tile drainage (TD) has been identified as a potential non-point source of phosphorus (P) pollution and subsequent water quality issues. Three fields with TD in Vermont USA were monitored to characterize hydrology and P export. Fields were in corn silage and used minimal tillage and cover cropping practices. Preferential flow path (PFP) activity was explored by separating TD flow into flow pathway and source connectivity components using two hydrograph separation techniques, electrical conductivity end member unmixing, and hydrograph recession analysis. TD was the dominant P export pathway because of higher total discharge. Drought conditions during this study limited surface runoff, …

Go to article

A Newly Recognized Theropod Assemblage From The Lewisville Formation (Woodbine Group; Cenomanian) And Its Implications For Understanding Late Cretaceous Appalachian Terrestrial Ecosystems, Christopher R. Noto, Domenic C. D'Amore, Stephanie K. Drumheller, Thomas L. Adams Jan 2022

A Newly Recognized Theropod Assemblage From The Lewisville Formation (Woodbine Group; Cenomanian) And Its Implications For Understanding Late Cretaceous Appalachian Terrestrial Ecosystems, Christopher R. Noto, Domenic C. D'Amore, Stephanie K. Drumheller, Thomas L. Adams

Articles & Book Chapters

While the terrestrial fossil record of the mid-Cretaceous interval (Aptian to Cenomanian) in North America has been poorly studied, the recent focus on fossil localities from the western United States has offered a more detailed picture of vertebrate diversity, ecosystem dynamics and faunal turnover that took place on the western landmass of Laramidia. This is in stark contrast to the terrestrial record from the eastern landmass of Appalachia, where vertebrate fossils are rare and consist mostly of isolated and fragmentary remains. However, a detailed understanding of these fossil communities during this interval is necessary for comparison of the faunal patterns …

Go to article

Variational Autoencoders For Reliability Optimization In Multi-Access Edge Computing Networks, Arian Ahmadi, Omid Semiari, Mehdi Bennis, Méroúane Debbah Jan 2022

Variational Autoencoders For Reliability Optimization In Multi-Access Edge Computing Networks, Arian Ahmadi, Omid Semiari, Mehdi Bennis, Méroúane Debbah

Machine Learning Faculty Publications

Multi-access edge computing (MEC) is viewed as an integral part of future wireless networks to support new applications with stringent service reliability and latency requirements. However, guaranteeing ultra-reliable and low-latency MEC (URLL MEC) is very challenging due to uncertainties of wireless links, limited communications and computing resources, as well as dynamic network traffic. Enabling URLL MEC mandates taking into account the statistics of the end-to-end (E2E) latency and reliability across the wireless and edge computing systems. In this paper, a novel framework is proposed to optimize the reliability of MEC networks by considering the distribution of E2E service delay, encompassing …

Go to article

The Social Networks Of Manureshed Management, Gwendwr Rhiannon Meredith, Sheri Spiegal, Peter J. A. Kleinman, Daren Harmel Jan 2022

The Social Networks Of Manureshed Management, Gwendwr Rhiannon Meredith, Sheri Spiegal, Peter J. A. Kleinman, Daren Harmel

School of Natural Resources: Faculty Publications

Manureshed management—the strategic use of manure nutrients that prioritizes recycling between livestock systems and cropping systems—provides a comprehensive framework for sustainable nutrient management that necessitates the collaboration of many actors. Understanding the social dimensions of collaboration is critical to implement the strategic and technological requirements of functional manuresheds. To improve this understanding, we identified aspirational networks of actors involved in manureshed management across local, regional, and national scales, principally in the United States, elucidating key relationships and highlighting the breadth of interactions essential to successful manureshed management. We concluded that, although the social networks vary with scale, the involvement of …

Go to article

Modeling Defect Mediated Color-Tunability In Leds With Eu-Doped Gan-Based Active Layers, Hayley J. Austin, Brandon Mitchell, Dolf Timmerman, Jun Tatebayashi, Shuhei Ichikawa, Yasufumi Fujiwara, Volkmar Dierolf Jan 2022

Modeling Defect Mediated Color-Tunability In Leds With Eu-Doped Gan-Based Active Layers, Hayley J. Austin, Brandon Mitchell, Dolf Timmerman, Jun Tatebayashi, Shuhei Ichikawa, Yasufumi Fujiwara, Volkmar Dierolf

Physics & Engineering Faculty Publications

Color tunability from red to orange to yellow has been demonstrated in GaN-based LED devices with Eu-doped GaN layers as the active region. Under current injection, this is achieved by varying the current density and the pulse conditions. The underlying mechanism behind this color tunability is a redistribution of energy among the D-5(J) states of a Eu3+ ion. This energy shuffling is facilitated by a local defect that has been neglected in previous modeling work. Including this defect allows for a quantitative prediction of the relative time-averaged populations of the Eu3+ ion's D-5(0) and D-5(1) states. Extracting, from experimental results, …

Go to article

Evidence For A Semisolid Phase State Of Aerosols And Droplets Relevant To The Airborne And Surface Survival Of Pathogens, Erik Huynh, Anna Olinger, David Woolley, R. K. Kohli, J. M. Choczynski, J. F. Davies, K. Lin, L. C. Marr, Ryan D. Davis Jan 2022

Evidence For A Semisolid Phase State Of Aerosols And Droplets Relevant To The Airborne And Surface Survival Of Pathogens, Erik Huynh, Anna Olinger, David Woolley, R. K. Kohli, J. M. Choczynski, J. F. Davies, K. Lin, L. C. Marr, Ryan D. Davis

Chemistry Faculty Research

The phase state of respiratory aerosols and droplets has been linked to the humidity-dependent survival of pathogens such as SARS-CoV-2. To inform strategies to mitigate the spread of infectious disease, it is thus necessary to understand the humidity-dependent phase changes associated with the particles in which pathogens are suspended. Here, we study phase changes of levitated aerosols and droplets composed of model respiratory compounds (salt and protein) and growth media (organic-inorganic mixtures commonly used in studies of pathogen survival) with decreasing relative humidity (RH). Efflorescence was suppressed in many particle compositions and thus unlikely to fully account for the humidity-dependent …

Go to article

Elucidating The Mass Transfer Mechanism Of Crvi Adsorption By Encapsulated Chitosan-Carbon Nanotubes-Iron Beads In Packed-Bed Columns, Mian Muhammad Ahson Aslam, Walter Den, Hsion-Wen Kuo Jan 2022

Elucidating The Mass Transfer Mechanism Of Crvi Adsorption By Encapsulated Chitosan-Carbon Nanotubes-Iron Beads In Packed-Bed Columns, Mian Muhammad Ahson Aslam, Walter Den, Hsion-Wen Kuo

Water Resources Science and Technology Faculty Publications

This study evaluates the CrVI breakthrough behaviors of a continuous-flow column packed with composite chitosan-MWCNTs‑iron beads under various operating conditions. Under the tested range of experimental parameters, a maximum of 54% of CrVI removal was achieved at: water flow rate, 1 mL/min, feed CrVI concentration, 30 mg/L; and packed bed height 8 cm. A homogeneous surface diffusion model (HSDM) involving convection-dispersion and diffusion equations was formulated, numerically solved, and experimentally validated. The high degree of conformity between the calculated and experimental breakthrough curves facilitated the determination of mass transfer parameters including axial dispersion DL, (1.30 …

Go to article

Hall Bar Device For Memory And Logic Applications, Christian Binek, Ather Mahmood, William Echtenkamp Jan 2022

Hall Bar Device For Memory And Logic Applications, Christian Binek, Ather Mahmood, William Echtenkamp

Department of Physics and Astronomy: Faculty Publications

A hall bar device for a memory or logic application can include a gate electrode, a boron-doped chromia layer on the gate electrode; and a hall bar structure with four legs on the boron-doped chromia layer. For a memory application, the hall bar device can be written to by applying a pulse voltage across the gate electrode and one leg of the hall bar structure in the absence of an applied magnetic field; and can be read from by measuring a voltage across the one leg of the hall bar structure and its opposite leg.

Go to article

Microwave-Assisted Synthesis Of Co-Doped Sno2/Rgo For Indoor Humidity Monitoring, Mohamed Morsy Jan 2022

Microwave-Assisted Synthesis Of Co-Doped Sno2/Rgo For Indoor Humidity Monitoring, Mohamed Morsy

Nanotechnology Research Centre

The evaluation of indoor humidity is challenging compared to other environmental parameters such as light intensity, temperature, sound and so forth. The proper selection of sensing materials and structural tuning will lead to high-performance humidity sensors. Herein, the SnO2/rGO and SnO2/rGO doped with Co nanocomposite were produced by microwave route. The obtained nanocomposite was characterized by XRD, SEM, EDAX, DTA, TGA, FTIR, Raman, and HRTEM. The successful incorporation of Co onto the rGO/SnO2 is affrmed by the XRD and supported with matching SEM and TEM outcomes where nanoscale particles exist. FTIR reveals the existence of the C– –C stretching band …

Go to article

Development And Application Of A Mine-Used Dynamic Azimuth Gamma Instrument While Drilling, Chen Long, Chen Gang, Zhang Jiguan Jan 2022

Development And Application Of A Mine-Used Dynamic Azimuth Gamma Instrument While Drilling, Chen Long, Chen Gang, Zhang Jiguan

Coal Geology & Exploration

Gas drainage borehole along coal seams is the most direct and effective gas control method at present. As a common basis for identifying coal bearing formations, natural gamma can tell whether the borehole trajectory is in the target layer according to the formation radioactivity. However, the existing mine-used gamma logging tools can only carry out sliding drilling measurement, which are not applicable to compound drilling or rotary steering drilling, and cannot meet the working condition of continuous gamma dynamic measurement. On the basis of the analysis of the characteristics of the working conditions of MWD and the principle of gamma …

Go to article

Characteristics And Detection Performance Of The Source Of Seismic While Excavating In Underground Coal Mines, Wang Baoli, Cheng Jianyuan, Jin Dan, Yang Xiaogang, Yang Hui Jan 2022

Characteristics And Detection Performance Of The Source Of Seismic While Excavating In Underground Coal Mines, Wang Baoli, Cheng Jianyuan, Jin Dan, Yang Xiaogang, Yang Hui

Coal Geology & Exploration

Against a background of intelligent coal mines, seismic while excavating has become one of the key geological guarantee technologies for safe excavation in the mining face. It can detect hidden geological structures in real-time, in advance and finely, such as goafs, faults, and collapsed columns, effectively promoting safe and efficient excavation and production. Different from the widely used advanced detection technology of reflection in-seam wave, the vibration signal of the tunneling machine is used as the excitation source, which replaces the explosive source in conventional seismic exploration. It has the advantages of environmental frendliness, safety, low cost, recyclability and combined …

Go to article

Application Of Borehole Transient Electromagnetic Method In Detecting The Cross-Border Mining Goaf, Fan Tao, Li Ping, Zhao Zhao, Li Wei, Zhao Rui, Zhang Peng, Yao Weihua, Li Yuteng, Fang Zhe Jan 2022

Application Of Borehole Transient Electromagnetic Method In Detecting The Cross-Border Mining Goaf, Fan Tao, Li Ping, Zhao Zhao, Li Wei, Zhao Rui, Zhang Peng, Yao Weihua, Li Yuteng, Fang Zhe

Coal Geology & Exploration

Cross-border mining in underground coal mines disrupts the order of coal resource development, and has huge hidden safety danger. Accurate detection of goafs caused by cross-border mining and their boundaries is extremely important for safe mining. Conventional mine transient electromagnetic detection methods are susceptible to interference from metal and electromagnetic signals in the roadway, and its detection accuracy is limited, which makes it difficult to meet the needs of accurate interpretation of goaf boundary. For the purpose of solving this problem, a drilling transient electromagnetic method and construction technology for transmitting and receiving signals in drilling is proposed to increase …

Go to article

Optimization Of Surface Directional Wells For Water Control Based On Three-Dimensional Seismic Dynamic Geological Modeling, Lu Ziqing, Gao Yaoquan, Guo Yuan Jan 2022

Optimization Of Surface Directional Wells For Water Control Based On Three-Dimensional Seismic Dynamic Geological Modeling, Lu Ziqing, Gao Yaoquan, Guo Yuan

Coal Geology & Exploration

In the treatment of high-pressure Ordovician limestone water in the coal seam floor, the design and construction optimization of surface directional wells mainly relies on two-dimensional AutoCAD geological drawings. For the avoidance of such problems as low drilling rate and off-target in the target area under complex geological conditions, and to improve the effect of precise targeted water hazard control, a technology for optimizing directional wells for water hazard prevention and control based on seismic dynamic modeling is proposed. By comparing and analyzing the current situation and problems of drilling trajectory design and optimization technology, it is pointed out that …

Go to article

Prevention And Control Technology Of Ordovician Water In Tangjiahui Coal Mine Based On Transparent Geology, Gao Yaoquan, Gao Yingui, Lu Ziqing, Kong Wanjun Jan 2022

Prevention And Control Technology Of Ordovician Water In Tangjiahui Coal Mine Based On Transparent Geology, Gao Yaoquan, Gao Yingui, Lu Ziqing, Kong Wanjun

Coal Geology & Exploration

The problems of many water diversion faults and, concealed water diversion structure have led to the difficulty of water disaster prevention and control of Ordovician limestone in No.6 coal seam in Tangjiahui Coal Mine. After continuous exploration and practice, a variety of advanced technologies has been introduced to obtain a large number of geological and hydrogeological data, and construct an intelligent geological guarantee system. The technical ideas of “geophysical and drilling exploration, joint grouting treatment up-hole and down-hole, in-hole transient electromagnetic fine exploration, inter-hole resistivity detection of grouting effect, and joint monitoring of coal seam floor by micro-seismic and electromagnetic …

Go to article

Influential Factors Of The Electromagnetic Wave Instrument While Drilling In Coal Seam Horizontal Wells And Resistivity Simulation Calculation, Chen Gang, Zhang Jiguan, Li Quanxin, Liu Zhiyi Jan 2022

Influential Factors Of The Electromagnetic Wave Instrument While Drilling In Coal Seam Horizontal Wells And Resistivity Simulation Calculation, Chen Gang, Zhang Jiguan, Li Quanxin, Liu Zhiyi

Coal Geology & Exploration

In order to figure out the influential factors of the detection by the electromagnetic wave instrument while drilling in coal seam horizontal wells, we studied the impacts of roof and floor surrounding rock resistivity, instrument eccentricity, coal seam borehole collapse and coal seam thickness on the measurement of resistivity through finite element numerical simulation. The resistivity response law of the amplitude ratio and phase difference calculation under the condition of high-resistivity coal rock formation was analyzed. On this basis, a three-layer geological mathematical model was established to simulate the difference between analytical and numerical solutions of the amplitude ratio and …

Go to article

Table Of Contents, The Editors Jan 2022

Table Of Contents, The Editors

Coal Geology & Exploration

No abstract provided.

Go to article

Construction And Demonstration Of The Transparent Geological Guarantee System In Tangjiahui Coal Mine, Liu Jiegao, Cheng Jianyuan, Shu Yiguo, Liu Zaibin, Gao Yingui, Gao Yaoquan, Lu Ziqing Jan 2022

Construction And Demonstration Of The Transparent Geological Guarantee System In Tangjiahui Coal Mine, Liu Jiegao, Cheng Jianyuan, Shu Yiguo, Liu Zaibin, Gao Yingui, Gao Yaoquan, Lu Ziqing

Coal Geology & Exploration

The intelligence construction of Tangjiahui Coal Mine is confronted with constrains such as water-conducting faults and pressure of Ordovician limestone water, and how to make the geological conditions transparent has become the technical bottleneck of intelligent mining. Tangjiahui Coal Mine puts emphasize on the prevention and control of water disasters and adopted five advanced technologies, including borehole transient electromagnetic technology, multi-borehole resistivity, seismic while excavating, seismic while mining, microseismic monitoring to build a real-time dynamic transparent geological guarantee system. The system realizes the prevention and control of water disasters, rapid excavation and intelligent mining based on transparent geological models, which …

Go to article

Application Of Reflected In-Seam Wave Detection For Small Faults In Thick Coal Seams, Su Xiaoyun Jan 2022

Application Of Reflected In-Seam Wave Detection For Small Faults In Thick Coal Seams, Su Xiaoyun

Coal Geology & Exploration

In general, the fault distance and extension length of small faults in the working face of thick coal seams and extremely thick coal seams are short. Due to the limitation of resolution, it is generally difficult to detect such small faults with current methods and instruments. The unclear detection of small faults will have a great impact on the efficient recovery of the intelligent working face. To solve this problem, the numerical simulation and field experiment of small fault reflected in-seam wave detection in the thick coal seam are carried out. In terms of numerical simulation, the three-component elastic wave …

Go to article

Application Research On Dynamic Calibration And Prediction Technology Of Coal Seam In Coalmine Working Face, Liu Wenming, Gao Yaoquan, Jiang Bici, Li Peng, Xue Wuqiang Jan 2022

Application Research On Dynamic Calibration And Prediction Technology Of Coal Seam In Coalmine Working Face, Liu Wenming, Gao Yaoquan, Jiang Bici, Li Peng, Xue Wuqiang

Coal Geology & Exploration

One of the prominent problems of intelligent mining is its inadaptability to geological conditions, especially for the absolute accuracy of coal seam floor and thickness. 3D seismic has a high horizontal resolution and it can control the ups and downs of the coal seam. However, due to the time domain data, the calculation of the coal seam floor elevation is negatively affected by the time-depth conversion point. On the basis of the 3D seismic data of the working face and the coal thickness data during the mining process, the absolute accuracy of the time-depth conversion of the coal seam floor …

Go to article

Application Of Mine-Used Resistivity Monitoring System In Working Face Water Disaster Control, Lu Jingjin, Wang Bingchun, Li Deshan, Duan Jianhua Jan 2022

Application Of Mine-Used Resistivity Monitoring System In Working Face Water Disaster Control, Lu Jingjin, Wang Bingchun, Li Deshan, Duan Jianhua

Coal Geology & Exploration

The geological transparency of water disasters is in urgent need to serve the intelligent and unmanned mining of coal mines. Focused on the water disasters during mining in the working face, the mine-used resistivity monitoring system uses pseudo-random signal transmission and full waveform data acquisition to improve the anti-interference ability of the equipment. Electrode grounding condition consistency correction and monitoring data normalization are used to suppress false anomalies. Time-lapse resistivity imaging is used to identify and extract the abnormal resistivity response of hidden water hazards. The monitoring system is able to estimate the risk of water disasters by monitoring the …

Go to article

The Adaptive Detection Technology Of Ultrasonic Flow In Mining Boreholes, Dai Chenyu, Zhao Pengpeng, Xu Jing Jan 2022

The Adaptive Detection Technology Of Ultrasonic Flow In Mining Boreholes, Dai Chenyu, Zhao Pengpeng, Xu Jing

Coal Geology & Exploration

For a better flow monitoring at the borehole of underground gas drainage in coal mines, and in response to the influence of factors such as complex composition, poor purity and poor stability of the medium in the pipeline on the measurement accuracy of drainage flow parameters, a set of adaptive detection system of ultrasonic flow for mining boreholes is designed with the time difference method as the measurement principle and the double threshold comparison method as the detection method. The overall scheme of the detection system is designed based on the analysis of the key problems affecting the measurement accuracy …

Go to article

Development And Application Of Zdy4500lfk Full Automatic Drilling Rig, Dong Hongbo, Fan Qiang, Li Kun, Ma Bin Jan 2022

Development And Application Of Zdy4500lfk Full Automatic Drilling Rig, Dong Hongbo, Fan Qiang, Li Kun, Ma Bin

Coal Geology & Exploration

The ZDY4500LFK full automatic drilling rig was developed and equipped with a surface monitoring and control system to improve the automation of various drilling works and reduce the number of underground workers, then accelerate the intelligent construction of coal mines and meet the demand for the construction of transparent geological security system in mines. In consideration of the key technical problems encountered in the drilling construction of the drilling rig in the transparent geological guarantee system in Tangjiahui Coal Mine of Huaihe Energy West Coal and Electricity Group, such key technologies as row positioning technology and automatic unloading buckle were …

Go to article

Research On Key Technologies Of The Zdy25000ldk Intelligent Directional Drilling Equipment, Fang Peng, Yao Ke, Wang Longpeng, Zhang Rui, Meng Rui, Wang Song, Shao Junjie, Liu Pu Jan 2022

Research On Key Technologies Of The Zdy25000ldk Intelligent Directional Drilling Equipment, Fang Peng, Yao Ke, Wang Longpeng, Zhang Rui, Meng Rui, Wang Song, Shao Junjie, Liu Pu

Coal Geology & Exploration

It is the most direct and effective method to extract coalbed methane by drilling along the coal seam and high-level drilling on the roof for comprehensive treatment of coalbed methane in underground coal mines. Improving the drilling speed of directional drilling and the drilling encounter rate in the coal seam of uneven thickness with large fluctuation, reducing the labor intensity of the personnel, enhancing the ability to prevent drilling accidents, and adapting to the intelligent development needs of coal mines, the intelligent drilling equipment for long-distance directional drilling in coal mines are all the important problems to be solved in …

Go to article

Development Of A Remote Monitoring System For Coal Mine Automatic Drilling Rigs, Wang Tianlong, Ma Bin, Dong Hongbo Jan 2022

Development Of A Remote Monitoring System For Coal Mine Automatic Drilling Rigs, Wang Tianlong, Ma Bin, Dong Hongbo

Coal Geology & Exploration

According to the policies on the manufacturing of national energy equipment, coal mine robots and intelligent development of coal mines as well as the trend of intelligent development of coal equipment, a remote monitoring system of automatic drilling rigs for coal mines is developed to monitor the automatic drilling rig remotely on the ground by using sensor measurement, software development, virtual reality, network communication, video monitoring and other technologies. The problems of incomplete parameter display, insufficient effective monitoring and inconvenient maintenance of the existing underground coal mine drilling rig are solved. The remote monitoring system includes the main rig, onboard …

Go to article

Key Technologies And Engineering Practice Of 3d Laser Scanning In Coal Mine Roadways, Wang Haijun, Liu Zaibin, Lei Xiaorong, Han Baoshan, Lu Ziqing Jan 2022

Key Technologies And Engineering Practice Of 3d Laser Scanning In Coal Mine Roadways, Wang Haijun, Liu Zaibin, Lei Xiaorong, Han Baoshan, Lu Ziqing

Coal Geology & Exploration

Intelligent and unmanned mining is an inevitable trend in the development of the coal industry. Precise geological information detection is one of the current key research and development directions in the construction of smart coal mines. The precise detection of information on roadways and the rapid acquisition of three-dimensional roadway models are important data sources for geological transparence. Through a comparative analysis of traditional roadway modeling methods and their advantages and disadvantages, a technical idea of using three-dimensional laser scanning reconstruction technology to construct a high-precision transparent working face roadway model is proposed. On the basis of the analysis of …

Go to article

Design And Implementation Of The Geological Guarantee System Architecture Based On Microservices, Li Peng, Cheng Jianyuan Jan 2022

Design And Implementation Of The Geological Guarantee System Architecture Based On Microservices, Li Peng, Cheng Jianyuan

Coal Geology & Exploration

The geological guarantee system is very important for safety production in coal mines. In view of the problems faced by the software development of the system, such as diverse data sources, inconsistent language for integrated development of the geological monitoring system and poor adaptability of the geological support platform in different coal mines caused by customized software development, a three-tier development architecture of the geological support system based on microservices is proposed, which includes an application tier, a platform tier and an infrastructure tier. On the basis of the microservices, the integrated development process of the geological support system is …

Go to article

Construction Method Of Transparent Working Face Based On Borehole Radar, Jiang Bici, Cheng Jianyuan, Li Ping, Liu Wenming, Yu Junhui, Wu Guoqing Jan 2022

Construction Method Of Transparent Working Face Based On Borehole Radar, Jiang Bici, Cheng Jianyuan, Li Ping, Liu Wenming, Yu Junhui, Wu Guoqing

Coal Geology & Exploration

The high-precision detection of coal rock interface is the key and difficult point to construct the three-dimensional geological model of intelligent mining. A method is proposed to construct regional coal rock interface geological model and realize transparent working face by using single hole reflection radar in the hole along coal seam and multi hole detection results. For single borehole radar data, the coal seam radar wave velocity is calculated by using the slope of roadway wave in-phase axis, and the spatial constrained migration imaging is used to realize the accurate calculating of coal seam top/floor reflection interface. Three transparent working …

Go to article

Construction Method On Transparent Geological Guarantee Technologies: A Case Study Of Wuhai Mining Area, Gu Baoze, Dai Zhenhua, Li Mingxing, Chen Baohui Jan 2022

Construction Method On Transparent Geological Guarantee Technologies: A Case Study Of Wuhai Mining Area, Gu Baoze, Dai Zhenhua, Li Mingxing, Chen Baohui

Coal Geology & Exploration

Coal geological guarantee technologies are applied in the whole life cycle of the coal industry. The technologies are the basis and premise of realizing safe, efficient, intelligent and green mining of coal resources, and plays a key role in disaster prevention, hidden disaster-causing factor detection and intelligent mining of coal. Without any doubt, geological transparency is the crucial task to improve the ability of intelligent analysis and decision-making, automatic and precise control, and efficient coal mining. For the purpose of solving the problems faced by Wuhai Mining Area in the construction of coal mine intellectualization, such as complex geological conditions …

Go to article

First Prev Next Last