WEBAug 18, 2023 · Coal spontaneous combustion disasters are one of the most serious types of mine disasters in China at present, posing a huge threat to underground personal safety and coal production operations. In order to prevent and control coal spontaneous combustion hazards and construct an efficient early warning system, this paper presents .
WEBJan 1, 2023 · Soil corrosivity has been measured directly using soil resistivity alone or in combination with other parameters like soil chemistry. ... When used correctly, it can protect more than 99% of the pipeline surface. Coating defects can occur because of coating machine faults, rough ... The coal tar enamel coating has deteriorated, and .
WEBFeb 1, 2018 · Remote sensing of heavy metal contamination of soils has been widely studied. These studies concentrate heavily on the hyperspectral reflectance of typical metals in soils and in plants measured either in situ or in the laboratory. The most used wavebands lie within the visiblenear infrared portion of the spectrum, especially the red .
WEBMar 24, 2020 · Soil organic matter (SOM) is a crucial indior for evaluating soil quality and an important component of soil carbon pools, which play a vital role in terrestrial ecosystems. Rapid, nondestructive and accurate monitoring of SOM content is of great significance for the environmental management and ecological restoration of mining .
WEBDec 7, 2023 · This report contains information on the availability, performance, and cost of eight technologies for the treatment of mercury in soil, waste, and water. It describes the theory, design, and operation of the technologies; provides information on commercial availability and use; and includes sitespecific data on performance and cost, where ...
WEBThe device is the firstever example of technology that can detect NRN in its vapor phase. In order to probe the soil under a concrete slab for that NRN, a oneeighth inch hole need only be ...
WEBSep 13, 2022 · China is the largest producer and consumer of coal in the world. The extraction of coal is increasing intensively to meet the needs of the everincreasing population and industries. However, coal mining has resulted in environmental changes, including deforestation, air, water, soil, and landform deterioration. This study .
WEBJul 9, 2021 · Rapid assessment of heavy metal (HM) pollution in mining areas is urgently required for further remediation. Here, hyperspectral technology was used to predict HM contents of multimedia environments (tailings, surrounding soils and agricultural soils) in a mining area. The correlation between hyperspectral data and HMs was explored, then .
WEBFeb 1, 2017 · All these techniques detect the leakage of low amounts of chemical constituents in the surrounding area. Due to their high sensitivity, even low concentrations of explosives in the soil could be detected (Habib, 2007). A review of the methods that use chemical vapor sensing in order to detect landmines is given in Yinon (2003).
WEBSep 20, 2022 · Buried landmines can be detected using a variety of methods. The common landmine detection techniques are as follows: Biological. The ability to directly sense explosive substances depends upon the biological sensors or biosensors like dogs, certain rodents, sweet bees, plant kinds, and some bacteria types [].The livestock employed .
WEBSep 1, 2023 · In view of the inconsistency of guided wave energy in distributed acoustic sensing coal mine maps and the difficulty in distinguishing the vibration levels of coal mines, which leads to the poor sensitivity and accuracy of microseism detection, a coal mine microseism detection method based on time–space characteristics and a support .
WEBFeb 3, 2017 · The spatial distribution of the five land use classes was extracted to detect land use change in the Panxie coal mining area since the 1980s and to quantitatively analyze the changes based on the OBIA classifiion from each of the land use maps in the time series (Tables 7, 8). The change matrix analysis showed that, as a whole, about .
WEBOct 1, 2019 · Other researchers [83] [84][85][86][87] used ML models to segment coal types (classified by different fixed carbon content in coal) [83], geology type (bituminous coal, lignite, sandstone, soil ...
WEBJun 19, 2021 · Section 2 provides information about standard machine learning techniques used for soil analysis. ... The table shows lower sensitivity of the UVVIS range for the presence of P, where magnesium was easier to detect with all machine learning techniques. The better performance of the machine learning techniques can be .
WEBJul 1, 2018 · However, in the process of topcoal caving, manual judgment is still used to control the opening switch of drawing coal, which affects the coal caving efficiency and personnel safety to a certain ...
WEBDec 7, 2023 · Sustainable agricultural practices help to manage and use natural resources efficiently. Due to global climate and geospatial land design, soil texture, soil–water content (SWC), and other parameters vary greatly; thus, real time, robust, and accurate soil analytical measurements are difficult to be developed. Conventional statistical analysis .
WEBMining tools is a general phrase that refers to all the mining equipment and mining machines used to extract minerals from the earth. Mined minerals appear in almost every consumer product—from cars, to electronics, to jewelry and more. Minerals like uranium and coal are major energy sources that account for 50% of the US's energy supply.
WEBNov 16, 2020 · Abstract Some indiors for evaluating heavy metal pollution have been proposed. However, a threshold is lacking to judge if the heavy metal concentration has reached the extent that is harmful to plant health. In order to get the threshold, aerial hyperspectral images were obtained. The spatial patterns of six soil heavy metals (Cu, .
WEBJul 8, 2023 · The front end is a part of the field of soil detection, which is mainly used to monitor, extract and transmit soil temperature and humidity data. In this case, sensors are used in conjunction with serial communiion techniques to determine sensor data capture, and to receive and transmit data using shortcircuit wireless transmission ...
WEBOct 1, 2022 · However, soil organic matter, iron and manganese oxides, clay minerals, and other soil spectral active components have a strong adsorption and occurrence relationship with heavy metals in the soil, resulting in a significant correlation between heavy metal content and soil spectrum (Liu et al., 2011, Shi et al., 2014). This correlation provides ...
WEBAug 11, 2023 · Coal remains a very important source of energy for the global economy. Surface and underground coal mining are the two major methods of coal extraction, and both have benefits and drawbacks. Surface coal mining can have a variety of environmental impacts including ecosystem losses, landscape alteration, soil destruction, and changes .
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WEB2. Materials and Substrate subtraction. To be able to detect soil organisms against a background of varied substrates, we simulated recovery ofH. bacteriophora entomopathogenic nematode (EPN) infective juveniles (IJs) from sand and muck soil solutions. The sand was autoclaved playground sand (Lowes) and the soil, high organic .
WEBDec 4, 2023 · Kutateladze Institute of Thermophysics, 630090 Novosibirsk, Russia * Corresponding author: e_butakov Abstract. The development of machine learning algorithms based on semiindustrial thermal benches will approach the development of an automated system capable of detecting and tweaking energyefficient and .
WEBP. Panel A coal mining block that generally comprises one operating unit. Panic bar A switch, in the shape of a bar, used to cut off power at the machine in case of an emergency. Parting (1) A small joint in coal or rock; (2) a layer of rock in a coal seam; (3) a side track or turnout in a haulage road.
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