آخرین محصولات
Data mining in clinical big data: the frequently used …
Data mining is a multidisciplinary field at the intersection of database technology, statistics, ML, and pattern recognition that profits from all these disciplines [].Although this approach is not yet widespread in the field of medical research, several studies have demonstrated the promise of data mining in building disease-prediction …
Mining Method
The following discussion and illustrations of mining methods are based on Guither et al. (1984). Room and pillar. In room-and-pillar mines, coal is removed from haulage-ways (entries) and selected areas called rooms. Pillars of unmined coal are left between the rooms to support the roof. Depending on the size of rooms and pillars, the …
Moving towards deep underground mineral resources: …
Wellbore mining methods have progressively reached an all time depth of >7500 m (Gu and Li, 2003; Wagner, 2013; Walton et al., 2015; Wagner et al., 2016). Challenges associated with deep underground mining are numerous, including: excavation stability, rock-stress risk reduction, mine ventilation, underground productivity, human …
What are the main methods of mining? | American …
There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically …
Environmental impact of direct lithium extraction from brines
These methods include any type of evaporator, distillation device or membrane distillation. ... Bolan, N. et al. From mine to mind and mobiles — lithium contamination and its risk management ...
Understanding the impacts of mining on ecosystem services …
Understanding the effects of mining on ES requires identifying and conceptualising the full ES chain including four key components – supply, demand, flow and benefits (Figure 1) (Mandle et al., 2020; Villareal-Rosas et al., 2020).Extracting mineral resources results in removal or modification of areas of natural ecosystems (Castello …
A systematic evaluation of text mining methods for short
The performance of text mining methods that use manually coded data as input should not be evaluated against the same data used when the model was built (or fine-tuned). ... Mpouli et al., 2020), and dictionary outputs can serve as input for supervised machine learning methods (Farnadi et al., 2021). We consider text mining methods as valuable ...
What are the main methods of mining? | American …
There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically used for more shallow and less valuable deposits. Placer mining is used to sift out valuable metals from sediments in river channels, …
(PDF) The development of a mining method …
In the past decades, attempts were made to build a systematic approach to mining method selection (MMS) Ooriad et al, [1]. This is because MMS is a complex and irreversible process.
(PDF) Mining Methods: Part I-Surface mining
Surface mining; Classification of surface mining methods together with the desired parameters/ conditions suitable for their applications; Open pit mining; Classification of quarrying methods ...
Underground mining of thick coal seams
An access to international market provides some options to select a suitable mining method for underground winning of thick coal seams in the country. Out of the two types of mining methods for a thick coal seam: (i) multi-slice working and (ii) extraction of TTTCSSL, the latter one is preferable due different techno-economic reasons [4 ...
A New Combined Mining Method: The Stope Limit Length
With increasing mining depth, mining method reform has become a common problem in the industry because increasing ground stress, increasing rock fragmentation, increasing ore-depletion rate and other frequent mining accidents (Zhao et al 2021; Wu et al 2021; Cai et al 2019). However, the existing mining manuals and …
Artisanal and small-scale mining methods and the …
The methods of ASM are the three (3) standard mining methods, namely, alluvial mining, surface/open pit mining, and underground mining (Chirikure, 2015). …
Aluminum Mining and Processing: Everything you …
Find out information about aluminum mining, processing and uses from General Kinematics- leaders in the mining equipment world.
Machine Learning and Data Mining Methods in Diabetes …
To this end, Park et al. developed an association rule mining-based method to discover patterns of multiple phenotypic associations over 52 anthropometric and biochemical traits [131]. The discovered patterns were then used to identify genetic markers that can be associated with multivariate phenotypes.
A literature review of Multi Criteria Decision-Making …
Among the six proposed mining methods (sublevel stoping, mechanized cut and filling, traditional cut and filling, step mining, stull stoping and shrinkage stoping), for this deposit, the traditional cut and filling method was proposed as the optimal method (Ataei et al., 2008a, Jamshidi et al., 2009). Musingwini and Minnitt also used the AHP to ...
Coal mining method with near-zero impact on the …
Therefore, preventing the roof from breaking is the fundamental purpose of the MNIA, which is based on the idea of coordinated mining, subcritical mining, replacement of coal pillars by the backfilling body, and "strip mining roadway backfilling method" mining (Bai et al. 2018b). The methods of reasonable working face size of …
Evaluation of different methods of pillar recovery in coal mining …
The room-and-pillar technique is a self-supporting mining method in which part of the ore is left unmined as pillars. To increase the mining efficiency, the pillars are later recovered partially or completely. This research aims at evaluating and comparing four methods of pillar recovery, namely, 'pocket and wing', 'open ending', 'split and fender', …
Machine Learning and Data Mining Methods in Diabetes Research
To this end, application of machine learning and data mining methods in biosciences is presently, more than ever before, vital and indispensable in efforts to transform intelligently all available information into valuable knowledge. Diabetes mellitus (DM) is defined as a group of metabolic disorders exerting significant pressure on human ...
Underground Mining Methods—Engineering Fundamentals and International
The use of underground ring drilling and blasting holes is common, given their compatibility with various mining methods and use in the construction of underground structures like the ore draw bells.
Aluminum processing | History, Mining, Refining, …
Aluminum processing, preparation of the ore for use in various products. In addition to its low density, many of the applications of aluminum and its alloys are based on its high electrical and thermal conductivity, high …
MINING METHOD SELECTION METODOLOGY BY …
Yavuz 2009, Azadeh et al 2010 and Bogdanovic et al 2012). 3. Hypotheses/Objectives This study wants to contribute to mining planning and design process. The problem of selecting the mining method becomes the most important aspect of mining activities, and you should select the method that best fits the unique criteria of each location, such as
Aluminum Production and Processing
Aluminum Production and Processing. Primary production involves mining bauxite deposits from the earth, chemically refining it into pure aluminum oxide and performing electrometallurgical processing to ultimately form …
Data mining methods in the prediction of Dementia: A real …
Dementia and cognitive impairment associated with aging are a major medical and social concern. Neuropsychological testing is a key element in the diagnostic procedures of Mild Cognitive Impairment (MCI), but has presently a limited value in the prediction of progression to dementia. We advance the hypothesis that newer statistical …
(PDF) A Review on Data Mining Methods Used in Internal …
PDF | In this study, data mining methods used in audit activities are explained. Based on the results of the research on data mining, common data mining... | Find, read and cite all the research ...
Impact of different Illegal Artisanal Small-Scale Mining …
The impact of illegal ASM on soil physico-chemical properties is multifaceted and can vary depending on factors such as mining techniques, ore types, and site …
Data mining methods for detection of new malicious …
A serious security threat today is malicious executables, especially new, unseen malicious executables often arriving as email attachments. These new malicious executables are created at the rate of thousands every year and pose a serious security threat. Current anti-virus systems attempt to detect these new malicious programs with …
From Deep Underground to the Can in Your Hand: How …
Alumina is not the finished product, however — it must undergo electrolysis before becoming aluminum. This process, which separates negative ions from positive ions, also breaks up the alumina into two components: aluminum metal and carbon dioxide gas. Electrolysis begins when the …
Mining and Minerals
The mining industry around the world, for many years, has been applying three primary methods to extract minerals: surface mining, underground mining, drilling mining, and a few other less commonly applied methods (Mero et al. 2017). Each of the methods offers a wide range of technological variants adapted to the geological …
(PDF) Mining Methods
The purpose of this chapter is to gain a better understanding of the different underground scenarios in terms of mining methods, layouts and associated excavation geometries.
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