Acta Montanistica Slovaca最新文献

Selection of the variant of highway based on the territory susceptibility to landslides – model area D1/R3 highway nearby Oravský Podzámok 基于区域滑坡易感性的公路形式选择——模型区D1/R3公路附近Oravský Podzámok

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.13

{"title":"Selection of the variant of highway based on the territory susceptibility to landslides – model area D1/R3 highway nearby Oravský Podzámok","authors":"","doi":"10.46544/ams.v28i2.13","DOIUrl":"https://doi.org/10.46544/ams.v28i2.13","url":null,"abstract":"The article focuses on the issue of routing lineside constructions in Slovakia. The chosen section of the planned lineside construction is the future section of the R3 expressway starting at the D1/R3 highway intersection in Hubová up to Oravský Podzámok. The selected road section was investigated based on the built-up model of the territory's susceptibility to landslides. Multivariate statistical analysis was used to determine the susceptibility of the territory to landslides, the success of which was determined based on ROC curves. Four variants were compared, of which two surface and two tunnel variants with the Dolný Kubín tunnel. By comparing the routes of the individual variants that pass through the landslide area, the order of suitability of the highway variants was determined in terms of slope stability. Determining the conflict of interests of line constructions with sites of susceptibility to landslides is very important in the environmental impact assessment process. Prediction of probable negative impacts of construction is one of the basic missions of this process. Missing data, whose acquisition extends the processing time for the project and the funding of associated expenditures, is a common drawback when building prediction models in the field of road construction.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

X-ray diffraction as a highly selective and sensitive tool for the identification of Mg-rich carbonate phases in terms of the limestone with magnesium practical application x射线衍射作为一种高选择性、高灵敏度的鉴定富镁碳酸盐相的工具，在含镁石灰岩中具有实际应用价值

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.08

{"title":"X-ray diffraction as a highly selective and sensitive tool for the identification of Mg-rich carbonate phases in terms of the limestone with magnesium practical application","authors":"","doi":"10.46544/ams.v28i2.08","DOIUrl":"https://doi.org/10.46544/ams.v28i2.08","url":null,"abstract":"This article presents the theory about the usability and effectiveness of X-Ray Diffraction in identifying carbonate phases varied in magnesium content in the practical application of limestone-rich magnesium. Results of research on the Triassic limestone samples using this method are presented there. The samples were taken from the area of Opole Silesia in Poland. It is a Polish part of the Germanic Basin. X-ray diffraction was used to identify the following phases: low-Mg calcite, high-Mg calcite, dolomite, and huntite. Low-Mg calcite dominates in the limestones. In some samples, there is also a lower amount of high-Mg calcite. Moreover, dolomite and huntite were identified. The study results have shown that X-ray diffraction is the perfect method to identify carbonate phases with different magnesium content. Limestone, including carbonates rich in magnesium, can be used as a fertilizer, animal feed additive, sorbent to desulfurize flue gases or material in road building. The research results indicate the possibility of application of the Muschelkalk limestones rich in magnesium from the area of Opole Silesia in different branches of industry. Therefore, it would not be necessary to carry out selective exploitation in a way to avoid the magnesium-rich limestone zones in the deposits.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The potential of Sudanese Refractory Gold Ores Characterization and Pre-treatment in Ariab Mines (VMS) in Red Sea (Sudan) 苏丹难处理金矿在红海(苏丹)阿拉伯矿(VMS)中的表征及预处理潜力

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.01

{"title":"The potential of Sudanese Refractory Gold Ores Characterization and Pre-treatment in Ariab Mines (VMS) in Red Sea (Sudan)","authors":"","doi":"10.46544/ams.v28i2.01","DOIUrl":"https://doi.org/10.46544/ams.v28i2.01","url":null,"abstract":"This laboratory work demonstrates the ability to characterize and pre-treat Sudanese refractory gold ores at Ariab mines to extract the gold with optimal parameters. Characterization studies were performed by AAS, XRF and XRD analysis to assess the abundance of elements and mineral phases. In addition, the acidity of the ore was examined to estimate the effective amount of lime. The ore was subjected directly to cyanidation without any pre-treatment. High oxidation reagent processes were carried out to pre-treat the ore. Chemical analysis results show the gold grade to be 1.37 g/t. In addition, the ore contained 51.78% Fe2O3, 43.40% SO3, 2.39% CuO, 1.47% SiO2, 0.35% Cr2O3, 0.17% CaO, 0.08% As2O3, 0.06% ZnO and 0.06% MnO. The XRD result shows that the ore phases are Pyrite (FeS2), Chatkaite (Cu6Fe+2Sn2S2) and Quartz (SiO2). The investigations of direct cyanidation elucidated that the ore can consume a high amount of cyanide with unsatisfactory recoveries for gold (Exgold ≤39.41%). The influence of the cyanide concentration, pulp density (% by weight), leaching time hr, agitator speed and pH were examined in direct cyanidation experiments. In pre-treatment experiments, the effect of hydrogen peroxide (H2O2) and concentrations on gold recovery was studied. The pre-treatment of the ore with H2O2 achieved a good impact on the gold extraction performance. The higher gold extraction was obtained at hydrogen peroxide (H2O2) 300 ppm, cyanide concentration 3500 ppm, leaching time 10 hr, pH=10.5 and pulp density 40%.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the quasi rate of loading in Particle Crushing and Engineering Properties of Black Tough Sand 准加载率对颗粒破碎及黑韧性砂工程性能的影响

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.04

{"title":"Effect of the quasi rate of loading in Particle Crushing and Engineering Properties of Black Tough Sand","authors":"","doi":"10.46544/ams.v28i2.04","DOIUrl":"https://doi.org/10.46544/ams.v28i2.04","url":null,"abstract":"In this study, the effect of the quasi-rate of loading in the crushing of tough black sand will be studied experimentally. The Black tuff sand was obtained from the Al-Hala area (Al Tafila) in southern Jordan. Sand chemical composition is composed mainly of SiO2 with a considerable amount of Fe2O3, Al2O3, and CaO oxides. The experimental works will be conducted at different normal stresses (136 kPa, 245 kPa, 463 kPa, and 899 kPa), different relative densities (20%, 40%, 60%, and 80%), and different rates of loading (0.50 mm/minute, 1.00 mm/minute and 2.00 mm/minute) using the direct shear tests. All test specimens were prepared with uniformly graded sand, passing United States standard sieve #4, and retained United States standard sieve #8. The results of direct shear tests were analyzed to examine the stress-strain response to different shearing rates and to obtain the shear strength parameters from the Mohr-Coulomb envelope to investigate the factors influencing shear strength parameters, especially the friction angles. After shearing each specimen, sieve analysis was performed to determine the extent of the percentage of particle breakage. Results showed that the rate of loading in direct shear tests plays a significant role in the amount of crushing and in the internal friction angles. The amount of crushing as well as shear strength was increased with the increased rate of loading. Moreover, the microstructural analysis used scanning electron microscopy (SEM) analysis showed that the crushing from granular has primarily resulted from disintegration, grinding, and abrasion of particles.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High energy events as a combined effect of human impact and geoenvironmental factors - the case study based on GNSS data 高能事件作为人类影响和地球环境因素的综合效应——基于全球导航卫星系统数据的案例研究

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.20

{"title":"High energy events as a combined effect of human impact and geoenvironmental factors - the case study based on GNSS data","authors":"","doi":"10.46544/ams.v28i2.20","DOIUrl":"https://doi.org/10.46544/ams.v28i2.20","url":null,"abstract":"In the Upper Silesian Coal Basin (USCB) mining region in Poland, coal production has been gradually reduced for many years. Nevertheless, the number of high-energy tremors remains at a similar level or decreases much slower than production. We analyze this problem in the aspect of geological setting and on the base of geodetic data. We explain the paradox by specific interaction between man-induced and natural tectonic stress as seasonal hydrological effects. Anomalous energies released during large seismic events exceeded the predetermined threshold, typical for mining tremors in the area. Further, the authors point out the seasonal occurrence of these events. Temporal variations of distances between continuously operating GNSS (Global Navigation Satellite Systems) reference stations were analyzed, and linear strain, inferred from these geodetic observations, corresponded to high-energy tremors in the area. Consequently, the seismic events usually occurred when the analyzed baseline performance demonstrated significant seasonal increases or decreases of evaluated temporal distribution of strain. The aim of the analysis was to evaluate the relationships between the characteristics of the time series of deformations and the occurrence of seismic tremors of energy E ≥ 3 x 107J occur. Seasonal occurrences of high-energy seismic events as the energy they released suggest the influence of environmental factors.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of the FUZZY TOPSIS method for selecting an underground mining method 模糊TOPSIS法在地下采矿方法选择中的应用

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.16

引用次数: 0

Simplified model supporting decision-making considering the criteria of sustainable development and life cycle assessment (LCA) 考虑可持续发展和生命周期评价的简化决策支持模型

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.12

{"title":"Simplified model supporting decision-making considering the criteria of sustainable development and life cycle assessment (LCA)","authors":"","doi":"10.46544/ams.v28i2.12","DOIUrl":"https://doi.org/10.46544/ams.v28i2.12","url":null,"abstract":"Sustainability is at the heart of continuous product improvement, where social, environmental, and economic considerations are key. This is a difficult task, especially in the area of the following economic and environmental changes, as well as changes in customer expectations. Additionally, it has become crucial to make product decisions that will be based on their entire life cycle (LCA). Although these aspects of sustainability and LCA are popular, bringing them together in one analysis remains challenging. Therefore, the article's objective was to develop a simplified model that supports decision-making, taking into account the criteria of sustainable development and life cycle assessment (LCA). The originality is the proposed model, which operates based on a qualitative indicator (product quality level), an environmental indicator (the product's impact on the environment throughout its life cycle) and a price indicator (purchase price of the product). These indicators are created using the TOPSIS method and the modified ACJ-E method. As a result, a product ranking is created. A novelty is the combination of Life Cycle Assessment (LCA) criteria with quality criteria and the actual purchase price of the product. The model test was carried out on the example of CATERPILLAR mini excavators. However, the model can be dedicated to any company that wants to make decisions in accordance with the idea of sustainable development.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring Nuclear Energy and Environment Interaction in Pakistan Using the Fourier ARDL 利用傅里叶ARDL探索巴基斯坦核能与环境的相互作用

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.10

{"title":"Exploring Nuclear Energy and Environment Interaction in Pakistan Using the Fourier ARDL","authors":"","doi":"10.46544/ams.v28i2.10","DOIUrl":"https://doi.org/10.46544/ams.v28i2.10","url":null,"abstract":"This research examines the relationship between nuclear energy and environmental quality in Pakistan from 1971-2020 with the help of Fourier ARDL. In 2020, the use of fossil fuels, CO2 emissions, and the population had increased by 203.02%, 211.61%, and 101.18%, respectively, compared to 1990. This rise in contamination has caused a strain on the air quality in the country. To mitigate this, the use of nuclear energy increased from 0.18% in 1990 to 2.34% in 2020. The findings suggest that nuclear energy could be an effective policy for Pakistan if they want to improve its environmental quality. Additionally, it is projected that the detrimental externalities linked to pollution can be minimized in a year. Furthermore, with a 318% rise in energy imports in 2020 compared to 1990, it is vital for Pakistan to responsibly raise its utilization of nuclear energy to lessen its dependence on foreign energy sources and promote environmental quality. The economic repercussions of nuclear energy use in Pakistan are controversial; some studies suggest this increased usage might be impeding economic growth, while other studies suggest the opposite. This analysis seeks to examine the link between nuclear energy production and environmental damage using an appropriate method and scope.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Portfolio Hedging Strategy - Metals and Commodities 投资组合对冲策略-金属和商品

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.19

引用次数: 0

Renewable energy sources management in the EU-27 countries 欧盟27国的可再生能源管理

4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-09-19 DOI: 10.46544/ams.v28i2.17

{"title":"Renewable energy sources management in the EU-27 countries","authors":"","doi":"10.46544/ams.v28i2.17","DOIUrl":"https://doi.org/10.46544/ams.v28i2.17","url":null,"abstract":"Effective ways of reducing harmful emissions in the energy sector include, in particular, increasing the efficiency of energy conversion from non-renewable energy sources, the wider use of renewable energy sources and on the other hand, the rational use of energy by consumers. This study deals with the application of renewable energy sources (green energy), which, in addition to environmental benefits, also increase the state's independence from the import of fossil fuels. The world trend is clearly moving towards more intensive use of these clean green energies. Therefore, their higher use is included among the strategic goals of energy policy in most countries of the world, in EU countries, including Slovakia. The paper aims to examine the most important renewable energy sources producing green energy in the EU-27 member states in the period of 2010-2020. The subject of the research is the indigenous production of geothermal energy, solar thermal energy, primary solid biofuels, biogases, and renewable municipal waste. The analyzed EU countries differ in the most important renewable energy production. The countries of northern Europe are the Union leaders in producing energy from waste. Italy is a leader in the use of geothermal energy. The countries of northern Europe, including the Baltic States, are making progress in the production of solar energy. The cluster analysis resulted in the identification of countries with similar characteristics in the case of the development of domestic production of selected renewable sources in the examined period. The analysis showed the development of indicators had not changed significantly over the last decade, although some countries have moved within the established clusters.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0