Science topic

Minerals - Science topic

Native, inorganic or fossilized organic substances having a definite chemical composition and formed by inorganic reactions. They may occur as individual crystals or may be disseminated in some other mineral or rock. (Grant & Hackh's Chemical Dictionary, 5th ed; McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
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Article
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Acid is a necessary component for the successful leaching of minerals containing REEs (rare earth elements) and other sources. Pyrite (FeS2), which is present in REE containing minerals, can be used to produce acid. Pyrite is utilized as a source to create ferric sulfate and sulfuric acid in the presence of A. Ferroxidans. Such microorganism-based...
Article
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Since the government implemented the supply-side structural reform, the growth of electricity consumption in energy-intensive manufacturing industries has been contained in an all-round way, which poses greater challenges to overcapacity in the power sector. It is still a mystery that how to restrain the electricity consumption of energy-intensive...
Book
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Près d’une décennie après l’annonce par Arnaud Montebourg d’un « renouveau minier français », visant à redonner une souveraineté minérale à la France, aucune nouvelle mine n’a encore vu le jour en France métropolitaine. Au-delà de la formule, le renouveau minier s’est matérialisé par une dizaine de projets d’exploration du sous-sol métropolitain, q...
Presentation
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PRESENTATION TO CLAY MINERAL SOCIETY OF INDIA MEET IN KOLKATA NBSS-LUP (ICAR)
Preprint
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It's about information regarding vitamins, protein, fats, minerals, carbohydrates, and water
Article
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Properties of aggregates are majorly influenced by parameters of source rocks viz., formation process, chemical composition, impurities, volume of pores, and grain size. The study presents a review of aggregate treatment methods and its efficacy to enhance the quality of aggregate. Various aspects of aggregate treatment methods like processing temp...
Book
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Mile Markoski dipl. zem. in`. UDK 631. 43. 445. 4 (497.7) (043) FIZI^KI I FIZI^KO-MEHANI^KI SVOJSTVA NA ^ERNOZEMITE RASPROSTRANETI VO OV^E POLE A P S T R A K T Ispituvani se fizi~kite i fizi~ko-mehani~kite svojstva na ~ernozemite vo Ov~epolskiot region. Mehani~kiot sostav na ispituvanite po~vi se odlikuva so dominacija na frakciite fizi~ka glina i...
Preprint
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Classification, functions, requirements, deficiency symptoms and food sources of carbohydrate, protein, lipid or fat, vitamin, minerals and water
Article
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A conventional mining activity is the removal of overburden to extract excavated mine minerals. The process of open-pit mining activities is carried out by excavating the overburden material by digging and loading equipment. The process of excavating and loading the overburden material is carried out by digging tools and the transportation of the o...
Article
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Mineral compositions are used to infer pressures, temperatures, and timescales of geological processes. The thermodynamic techniques underlying these inferences assume a uniform, constant pressure. Nonetheless, convergent margins generate significant non‐hydrostatic (unequal) stresses, violating the uniform pressure assumption and creating uncertai...
Article
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Mineral resources are one of the main energy sources used in industrial production. While the economy is going up, the mining of coal mines and other mineral resources has also intensified. With the deepening of coal mining, the difficulty of mining has also increased. In order to ensure the safe production of relevant enterprises, it is necessary...
Article
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Sand used as fine aggregate in concrete may, under unfavorable environmental conditions, cause alkali-silica reaction and the consequent deterioration of durability and functional properties of concrete. The aim of this work is to compare alkali-silica reactivity of 18 natural sands of various origin. The potential reactivity of sands was tested ac...
Book
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Este curso, realizado no formato field workshop, aborda depósitos de grafita localizados no sul da Bahia e nordeste de Minas Gerais, e depósitos de lítio e outros minerais do Distrito Pegmatítico de Araçuaí (MG), incluindo abordagem sobre a geologia de minerais da alta tecnologia no Orógeno Araçuaí. A Província Grafítica Minas-Bahia destaca-se por...
Article
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In the framework of the project RemoteALPHA , an optical scanning system for remote sensing of alpha emitters using radioluminescence is being developed. After the feasibility of the technique was proven, current work aims at improving the sensitivity for detection of low surface activities. As calibration standard, pitchblende minerals were prepar...
Conference Paper
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Onion is a rich source of vitamins and minerals. It is perishable due to its high moisture content and an increase in relative humidity few months after its harvesting season. Substantial losses have been recorded in traditional storage cribs. This research developed appropriate structures for storage of onion. Four crib-like structure with varied...
Poster
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La collezione di fossili e minerali è stata donata al Piccolo Museo del Bisbino dai familiari di Flavio Ferrè ed è oggi esposta al pubblico al primo piano dell'edificio contiguo al Santuario della Beata Vergine del Bisbino (Cernobbio, CO).
Article
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Previously published studies on Australia's energy security did not examine the country's domestic energy security situation in tandem with its international energy statecraft. This paper fills this research gap. In order to provide a robust analysis of a country's strategic options in the energy sector, it is paramount to balance domestic and inte...
Article
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L'oasis de Tafilalet est récemment devenue une oasis qui exerce une fonction et des activités productives traditionnelles de nature écologique, en tenant compte l’équilibre environnemental entre les ressources naturelles disponibles et les besoins humains. Cependant, les mutations actuels imposent sur le système des changements qui se produisent ra...
Article
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The formation of layered mounds on Mars remains a major topic of debate, with the relationship between their deposition and chemical alteration a major aspect still to be constrained. The association these deposits have with hydrated minerals indicates aqueous processes were active in their past, however the extent and duration of this aqueous peri...
Article
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This study aimed to establish the effect of budgetary control on financial performance of First Quantum Minerals. The study used a mixed method approach using both quantitative and qualitative data. Data was collected from both primary and secondary sources that included financial reports for First Quantum Minerals and a sample of 98 employees at F...
Article
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A sewage sludge incineration ash contains large amounts of phosphorus, which are considered as a novel anthropogenic waste–based substitute for phosphorus natural resources. Phosphorus is accumulated at most in phosphate minerals of whitlockite structure, that contain Fe, Ca, and Mg and in the matrix composed of Si, Al, Fe, Ca, P, Mg, K, Na in vari...
Technical Report
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This report provides updates and summary information on a wide range of U.S. and International tight oil and gas plays for the 2020-2021 period. It includes contributions from Members of the Tight Oil and Gas Commodity Committee (Energy Minerals Division – American Association of Petroleum Geologists) and was compiled by the Chair (Lucy Ko) and Co-...
Article
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The induced polarization (IP) method plays an important role in the detection of seafloor polymetallic sulfide deposits. Numerical simulations based on the Poisson–Nernst–Planck equation and the Maxwell equation were performed. The effects of mineralized structures on the IP and electrical conductivity properties of seafloor sulfide-bearing rocks w...
Article
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As stated in their announcements and accompanying information, Special Issues published in scientific journals are usually aimed at compiling recent progress on highly specialized topics [...]
Article
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Quantifying the volumes and geologic nature of lunar volcanic eruptions is important for constraining the thermal and geologic evolution of the Moon. Cryptomaria are effusive, basaltic lava flows on the Moon that were subsequently buried, and therefore hidden, by higher-albedo basin and crater ejecta. Radar offers the ability to probe the subsurfac...
Article
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Antecedentes. En Honduras, el teosinte (Dioon mejiae) se cultiva desde épocas prehistóricas y su uso como alimento de consumo humano ha sido aislado y reducido. Sin embargo, sus semillas son prometedoras por altos contenidos en carbohidratos, proteínas y minerales en el afrontamiento de la inseguridad alimentaria. Objetivos. Se propuso elaborar una...
Article
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In the Mănăila alpine area, the soil layer developed in situ on top of the sericite-schists, which belong to the Tulghes 3 metamorphic unit. The aim of the present work was to determine the degree of soil formation using both mineralogical and geochemical exploration methods. XRD, FTIR and SEM-EDS results showed that the soil constituents were dioc...
Article
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Los drenajes ácidos mineros (DAM) son una fuente potencial para el aislamiento de microorganismos con capacidades de lixiviar menas sulfuradas; por ello, su aprovechamiento de estos efluentes permite optar tecnologías sostenibles y mejorar la recuperación de metales de valor comercial. La presente investigación tuvo como objetivo biolixiviar una me...
Article
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(1) Background: In order to study the effects of different electric cookers on the nutritional components of millet porridge, five different electric cookers (No. 1–5) were selected to cook millet porridge, then sensory and nutritional components in millet porridge, millet soup, and millet grains were analyzed; (2) Methods: Using principal componen...
Article
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A Amazônia brasileira tem sido pauta de debates mundiais em torno da importância dos seus ativos para manutenção dos serviços ecossistêmicos globais. Além da degradação ambiental, há a ocorrência de baixos indicadores de desenvolvimento social. A investigação teve como propósito, analisar se os recursos advindos da Compensação Financeira por Explor...
Article
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Dental caries, a chronic and irreversible disease caused by caries-causing bacteria, has been listed as one of the three major human diseases to be prevented and treated. Therefore, it is critical to effectively stop the development of enamel caries. Remineralization treatment can control the progression of caries by inhibiting and reversing enamel...
Article
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In this study, we examined the effect of diets supplemented with organic and inorganic mineral premixes on the laying performance and eggshell quality of aged laying hens. A total of 600 68-week-old Hy-Line Brown laying hens were randomly assigned to 1 of 3 dietary treatments, repeated 5 times: Mash type basal diet, basal diet supplemented with an...
Research
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The geochemical behavior of critical metals in magmatic and hydrothermal systems is of paramount importance in economic geology. Specific metals namely the REE, U and Th are predominately associated with alkaline felsic igneous rocks. Therefore, the presence of REE-U-Th minerals in mafic rocks is of particular interest, regarding the physicochemica...
Article
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To understand the mineral element distribution of the soil and tea plants, we determined and analyzed the content of 16 mineral elements in the soil profile and various tea plant organs at the Yangai tea farm in Huzxi District, Guiyang City, Guizhou Province, China. The results show that the soil of the Yangai tea farm is mainly an acidic and miner...
Thesis
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The paper describes the characteristics of accessory minerals of the deposits of the Verkhnevozeysky and Vozeysky deposits, discovered as a result of studying the almost continuous section of the deposits of the Fransky tier as part of the undifferentiated Timansky and Sargaevsky horizons, Domanic, Vetlasyansky, Sirachoysky, undifferentiated Evlano...
Preprint
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Today, nickel plays a critical role in the industry. However, the presence of this metal in its primary source of sulfide minerals is decreasing. The focus of exploration has since turned to laterite ore, which contains up to 80% nickel metal. The purpose of this study is to optimize nickel leaching using sulfuric acid and to conduct kinetic analys...
Article
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Permen Energi dan Sumber Daya Mineral No. 18 Tahun 2019 menyatakan besaran tingkat mutu pelayanan tenaga listrik untuk indikator kecepatan pelayanan sambungan baru tegangan rendah dilaksanakan dalam jangka waktu tertentu, yang jika tidak terpenuhi wajib memberikan kompensasi kepada konsumen. Penelitian ini meneliti implementasi Peraturan Menteri En...
Article
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In the course of the 9th and 10th centuries, the Arabo-Islamic world acquired a massive amount of knowledge from the antique and late antique traditions. In order to reconstruct the historical circumstances in which this transfer of knowledge took place, we are often forced to rely on the narratives that frequently accompany technical texts. The fr...
Article
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Structural-geological characteristics of Adjara-Trialeti Gujareti-Khachkovi ore fi eld is reviewed in the annotation work. The ore fi eld is tectonically highly complicated, and various types dysunctives and fractures are observed. According to opening quality the following take place at the investigation territory: invisible, closed , and open typ...
Article
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Identifying organic matter in laminae is fundamental to petroleum geology; however, many factors restrict manual quantification. Therefore, computer recognition is an appropriate method for accurately identifying microscopic components. In this study, we used support vector machine (SVM) to classify the preprocessed photomicrographs into seven cate...
Article
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El objetivo de este estudio fue evaluar el efecto del Selenio en las características morfológicas, físicas, peso y contenido de minerales esenciales en la semilla del frijol (Phaseolus vulgaris L.). Se usó un diseño experimental en bloques completos al azar con siete repeticiones. Los tratamientos fueron tres formulaciones químicas de Selenio: sele...
Article
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Tangor (Citrus unshiu × C. sinensis) cultivars obtained through interspecific hybridization have gained popularity in various countries, including South Korea. However, tangor has a relatively short history of cultivation and thus has been less well researched in terms of physiology and opping technology compared to mandarin. In addition, although...
Article
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One of the main sources of non-ferrous and precious metals is sulfide ores. This paper presents a review of the existing literature on the electrochemical properties of some of the most common industrial sulfides, such as pentlandite, chalcopyrite, sphalerite, galena, pyrrhotite, pyrite, etc. The study results of the surface redox transformations o...
Article
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Over the past six decades, I have maintained research connections with German scientists and scientific institutions while pursuing an academic career focusing on scientific discoveries of the physical properties of minerals at high pressures and temperatures. During this period, I have also visited many research laboratories in Germany, including...
Article
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Under global warming, the permafrost-underlain headwater catchments of the Tibetan Plateau have undergone extensive permafrost degradation and changes in precipitation characteristics, which may substantially alter the riverine suspended sediment and riverine solute fluxes. However, these fluxes and their influencing factors in such catchments are...
Conference Paper
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Z İnceleme alanının temelini, çalışma alanının güney kesimlerinde yer alan, Akdağmadeni masifi oluşturmaktadır. Çalışma alanının kuzey kesimlerinde ise İzmir-Ankara-Erzincan Zonu içerisinde yer alan, Artova ofiyolitli karışığı ve bu karışıkla tektonik ilişkili olarak izlenen Santoniyen-Maastrihtiyen yaşlı Darmik formasyonu yüzeylemektedir. İzmir-An...
Poster
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Student poster at the SEG 2022 'Minerals for our Future' conference in Denver, CO, 27-30th August. Poster entitled 'Magmatic controls on the Platreef stratigraphy, northern limb of the Bushveld Complex, South Africa'.
Article
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Tires, bitumen, and road markings are important sources of traffic-derived carbonaceous wear particles and microplastic (MP) pollution. In this study, we further developed a machine-learning algorithm coupled to an automated scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX) analytical approach to classify and quantify the...
Article
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Translations of four German publications on Victorian geology, mining and mineralogy by George Ulrich are provided. The hitherto unknown 1859 publication is the earliest detailed account of central Victorian geology and includes descriptions of the techniques for separating gold from quartz and comments on the loss of gold in the tailings and the i...
Article
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Indonesia is a leading producer of a wide range of minerals, including copper. Nonetheless, the copper-based industry in Indonesia is still not well developed, especially the limited number of products from the intermediate copper industry which will become raw materials for its downstream industry. The underdeveloped intermediate copper industry h...