WEBNorth Carolina [US], July 23 (ANI): A suite of four new tests that can be used to detect coal ash contamination in soil with unprecedented sensitivity was recently developed by Scientists at Duke University. The peerreviewed study was published in the journal 'Environmental Science and Technology'.
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WEBJul 1, 2020 · Wu et al. (2016), on the other hand, used machine learning algorithms such as ANN and GPR combined with soil formation factors (parent material, topography) and reported that machinelearning ...
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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 .
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WEBFeb 1, 2018 · To address this challenge, this study proposes a hybrid approach, namely, Light Gradient Boosting Machine plus Ordinary Kriging (LGBK), for predicting the spatial distribution of soil heavy metals. A total of 137 soil samples were collected from the Shengli Coalmine Base in Inner Mongolia, China, and their heavy metal concentrations .
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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 .
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WEBMar 4, 2024 · Heavy metal pollution in soil is becoming more and more serious. LIBS is one of the most promising technologies for rapid detection of heavy metal contamination in soil. However, due to the wide variety of soils and complex matrices, accurate quantifiion remains a challenge. In total, 451 soil samples were prepared and detected by the .
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WEBApr 1, 2000 · The main goal of the work was to determine whether a radarbased system could be used to detect coalrock interfaces in order to establish a suitable mining horizon within the coal seam.
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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 .
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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 .
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WEBJan 1, 2013 · Data used to test the proposed approaches are from Huainan Mining Industry Coal Quality database. The samples with high ash as well as the samples with same proximate and ultimate analysis were excluded from the database. A total of 52 set of coal sample analysis were used.
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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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WEBFeb 16, 2021 · soil nutrients. Introduction. Soil contains 16 essential elements like carbon, hydrogen, oxygen, nitrogen, calcium, etc. for the. proper completion of the plants life cycle. Out of these, three ...
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WEBDec 26, 2022 · Another point to note is that large amounts of extracted coal gangue accumulation causes severe damage to ecological environments. Heaps of gangue cause soil erosion, occupy land resources, and pollute water resources and soil resources (as shown in Fig. 4).The waste gangue generated by mining is difficult to handle, is widely .
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WEBSep 1, 2020 · This paper presents an exploratory study employing a benchscale approach to detect the multiinformation of coal quality online by machine vision simultaneously, including particle size distribution, density distribution, the ash content of each density fraction, and the total ash content. Firstly, we adopt a FiniteErosionandExactDilation ...
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WEBMay 1, 2009 · Mackena 4860, Macul, Santiago,, Chile. ( Received 11 June 2007; in final form 5 May 2008. This paper describes the state of the art in land mine detection technology and. algorithms ...
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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 .
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WEBJun 3, 2021 · A precise estimation of the heavy metal concentrations in soils using multispectral remote sensing technology is challenging. Herein, Landsat8 imagery, a digital elevation model, and geochemical ...
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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 ...
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WEBJan 1, 2016 · Machine Learning in Soil Classifiion and Crop D etection. Ashwini Rao 1 Janhavi U 2 Abhishek Gowda N S 3 Manjunatha 4 Beham A 5. 1,2,3,4,5Department of Information Science and ...
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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 .
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WEBJul 1, 2021 · The LOD of Pb was reduced from 24 mg/kg to mg/kg. Kang et al. [49] used LIBSLIF to achieve ultrasensitive detection of trace Pb in water, and the LOD of Pb can be as low as μg/L. Nicolodelli et al. [50] developed a tunable continuous wavediode laser and coupled it with the double pulse LIBSLIF system to detect Pb in soil. Compared ...
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WEBJul 1, 2021 · Soil heterogeneity and matrix effects affect detection limit and sensitivity of LIBS in detecting minor or trace elements. For soil, the advantage of chemometrics lies in the feature extraction of complex spectral information, which reduces the interference of irrelevant spectral data on the quantitative analysis of elements.
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WEBMar 14, 2024 · With the continuous development of deep learning, the appliion of object detection based on deep neural networks in the coal mine has been expanding. Simultaneously, as the production appliions demand higher recognition accuracy, most research chooses to enlarge the depth and parameters of the network to improve .
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WEBAug 10, 2021 · New tests can detect tiny but toxic particles of coal ash in soil. August 10, 2021. Scientists at Duke University have developed a suite of four new tests that can be used to detect coal ash ...
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WEBJan 1, 2023 · The main organic component of the SOM used in this study is soil organic carbon. The content was determined using the dichromate oxidation method [2]. ... combined hyperspectral techniques with machine learning to predict soil heavy metal content and obtained high prediction accuracy. Chen et al. [5] combined near infrared .
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WEBJun 1, 2021 · 1. Introduction. Coal is the main energy source in China and has accounted for approximately 60% of the nation's primary energy production and consumption for many years (Qiao et al., 2019).However, coal mining activities have also caused serious damage to the environment, including from the removal of vegetative covers and topsoils, .
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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 ...
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WEBOct 11, 2022 · Multispectral satellite images are used for the renaturation (restoration of postmining lands to a state resembling nature) of mountainous areas as they allow monitoring the state of vegetation and the socalled acid drainage (the outflow of acidic water from iron ore and coal mines).
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WEBJan 3, 2023 · Coal gangue (CG), one of the world's largest industrial solid wastes produced during coal mining, is extremely difficult to be used owing to its combined contents of clay minerals and organic macromolecules. This study explored a novel process of degrading the harmful organic compounds in the CG into humic acid using a biological method .
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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