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Journal articles on the topic 'Minerals Bio Distribution'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Sun, Bin, Hui Zhao, Yanhong Zhao, Maurice Tucker, Zuozhen Han, and Huaxiao Yan. "Bio-Precipitation of Carbonate and Phosphate Minerals Induced by the Bacterium Citrobacter freundii ZW123 in an Anaerobic Environment." Minerals 10, no. 1 (2020): 65. http://dx.doi.org/10.3390/min10010065.

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In this study, a facultative anaerobic strain isolated from marine sediments and identified as Citrobacter freundii, was used to induce the precipitation of carbonate and phosphate minerals in the laboratory under anaerobic conditions. This is the first time that the ability of C. freundii ZW123 to precipitate carbonate and phosphate minerals has been demonstrated. During the experiments, carbonic anhydrase, alkaline phosphatase and ammonium released by the bacteria not only promoted an increase in pH, but also drove the supersaturation and precipitation of carbonate and phosphate minerals. Th

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Wu, Zeng Ling, Zhong Sheng Huang, Ren Man Ruan, Shui Ping Zhong, and Brenda K. C. Chan. "Effect of Temperature on Column Bioleaching of a Refractory Gold Ore." Advanced Materials Research 825 (October 2013): 352–55. http://dx.doi.org/10.4028/www.scientific.net/amr.825.352.

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Low-grade, finely disseminated refractory sulfide gold ores associated with high arsenic are ubiquitous resources all over the world. Since heap bio-oxidation is an economic and promising biotechnology to recover gold, low grade, high organic carbon and arsenic bearing gold ores from Zhesang Mines in China were chosen for this purpose to study the key factors that would affect biooxidation. Pyrite and arsenopyrite (particle size 0.002-0.22 mm) were the main minerals from Mineral Liberation Analysis (MLA). Column biooxidation and cyanidation of mineral size < 10 mm were evaluated for its pot

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Rudmin, Maxim, Aleksey Ruban, Oleg Savichev, Aleksey Mazurov, Aigerim Dauletova, and Olesya Savinova. "Authigenic and Detrital Minerals in Peat Environment of Vasyugan Swamp, Western Siberia." Minerals 8, no. 11 (2018): 500. http://dx.doi.org/10.3390/min8110500.

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Studies of mineral-forming processes in modern peat bogs can shed light on metal concentrations and their cycling in similar environments, especially in geological paleoanalogs. In terms of the mineralogical and geochemical evolution of peat bog environments, the Vasyugan Swamp in Western Siberia is a unique scientific object. Twelve peat samples were collected from the Vasyugan Swamp up to the depth of 275 cm at 25 cm intervals. The studied peat deposit section is represented by oligotrophic (0–100 cm), mesotrophic (100–175 cm), and eutrophic (175–275 cm) peat, and this is underlain by basal

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., Badgujar Mrs. Vaishali N. "A review on antoioxident potential & application of peel extracts of cucurbita moschata (Pumpkin) in advanced Dermatology." International Journal of Advance and Applied Research, no. 23 (August 10, 2024): 481–85. https://doi.org/10.5281/zenodo.13640526.

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<strong>Abstract:          </strong> Cucurbita moshchata is worldwide in distribution and rich in carotenoids, vitamins, dietary fiber , minerals and phenolic compounds .It has also medicinal values .<em> .</em>Pumpkin (Cucurbita moshchata<em> </em>L.) is an economically important   food resource cultivated due to its nutritional composition. It has been   used traditionally   both as Humans and animal feed, also has Ethnomedicinal potential. It is cultivated throughout the world specialy in tropical area of Asia, Afric

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M., BALA KRISHNA PRASAD1, RAMANATHAN1 A.L., KR. SHRIVASTAV1 SUNIL, ANSHUMALI1, and SAXENA2 RAJINDER. "METAL FRACTIONATION STUDIES IN SURFACIAL AND CORE SEDIMENTS IN THE ACHANKOVIL RIVER BASIN IN INDIA." Environmental Monitoring and Assessment 121 (January 1, 2006): 77–102. https://doi.org/10.5281/zenodo.3251182.

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The Fractionation of Fe, Zn, Cu, Pb, Mn and Cd in the sediments of the Achankovil River, Western Ghats, India using a sequential extraction method was carried out to understand the metal availability in the basin for biotic and abiotic activities. Spatial distribution of heavy metals has been studied. Sediment grain size has significant control over the heavy metal distribution. The fluctuations in their concentration partly depend upon the lithology of the river basin and partly the anthropogenic activities. The sediments are dominated by sand and are moderately to strongly positively skewed

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Gogoi, Biswadeep. "Baccaurea ramiflora Lour.: Biochemical and ethnobotanical value with scope for bio-prospection." Annals of Plant Sciences 6, no. 7 (2017): 1649. http://dx.doi.org/10.21746/aps.2017.07.001.

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Baccaurea ramiflora Lour., a member of Euphorbiaceae family, is found in the tropical forests with wild distribution in India (Assam). The fruits are edible and the wood of the tree is use for making furniture. The present review work is an effort to revisit the scientific works done to evaluate the scope for bio-prospection of edible fruit of B. ramiflora. Research work has reported rich content of minerals and vitamin C in the fruit. The plant has ethno-botanical uses in different countries of the world. Though it has many valuable properties, the plant is still an underutilized plant as its

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Gueriau, Pierre, Solenn Réguer, Nicolas Leclercq, et al. "Visualizing mineralization processes and fossil anatomy using synchronous synchrotron X-ray fluorescence and X-ray diffraction mapping." Journal of The Royal Society Interface 17, no. 169 (2020): 20200216. http://dx.doi.org/10.1098/rsif.2020.0216.

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Fossils, including those that occasionally preserve decay-prone soft tissues, are mostly made of minerals. Accessing their chemical composition provides unique insight into their past biology and/or the mechanisms by which they preserve, leading to a series of developments in chemical and elemental imaging. However, the mineral composition of fossils, particularly where soft tissues are preserved, is often only inferred indirectly from elemental data, while X-ray diffraction that specifically provides phase identification received little attention. Here, we show the use of synchrotron radiatio

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Ibrahim, Doaa, Haytham Ali, and Shefaa El-Mandrawy. "Effects of Different Zinc Sources on Performance, Bio Distribution of Minerals and Expression of Genes Related to Metabolism of Broiler Chickens." Zagazig Veterinary Journal 45, no. 3 (2017): 292–304. http://dx.doi.org/10.21608/zvjz.2017.7954.

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9

Ngonyani, Consolatha J., and Hudson H. Nkotagu. "Study of Nutrient Pollutants and Their Impacts on the Water Quality of the Mindu Reservoir at Morogoro Municipality." Tanzania Journal of Engineering and Technology 30, no. 2 (2007): 139–49. http://dx.doi.org/10.52339/tjet.v30i2.407.

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The physical-chemical parameters characterization of Mindu Reservoir, whose 50% of its waters is being plagued byaquatic weeds, involved the analyses of water and sediment samples that were collected during the dry season. As thenutrients levels of Mindu waters were determined, phosphorous (TP - PO 43- ) levels were found to be high enough forsupporting eutrophication process. Likewise Nitrogen/Phosphorous ratios average of 8.51 ± 4.32 suggested a Redfieldbehavior of nutrients with nitrogen being a limiting one. The dominant clay minerals of the Mindu surficial sedimentswere found to be kaolin

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Valencia-Galindo, Miguel, Esteban Sáez, Carlos Ovalle, and Francisco Ruz. "Evaluation of the Effectiveness of a Soil Treatment Using Calcium Carbonate Precipitation from Cultivated and Lyophilized Bacteria in Soil’s Compaction Water." Buildings 11, no. 11 (2021): 545. http://dx.doi.org/10.3390/buildings11110545.

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Microbial-induced carbonate precipitation (MICP) is a bio-inspired solution where bacteria metabolize urea to precipitate. This carbonate acts as a bio-cement that bonds soil particles. The existing framework has focused mainly on applying MICP through infiltration of liquid bacterial solutions in existing soil deposits. However, this technique is inefficient in soils with high fines content and low hydraulic conductivity, and thus few studies have focused on the use of MICP in fine soils. The main objective of this study was to evaluate the effect of MICP applied to compaction water in soils

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Hohl, Simon V., Shao-Yong Jiang, Sebastian Viehmann, et al. "Trace Metal and Cd Isotope Systematics of the Basal Datangpo Formation, Yangtze Platform (South China) Indicate Restrained (Bio)Geochemical Metal Cycling in Cryogenian Seawater." Geosciences 10, no. 1 (2020): 36. http://dx.doi.org/10.3390/geosciences10010036.

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The behaviour of bioavailable trace metals and their stable isotopes in the modern oceans is controlled by uptake into phototrophic organisms and adsorption on and incorporation into marine authigenic minerals. Among other bioessential metals, Cd and its stable isotopes have recently been used in carbonate lithologies as novel tracer for changes in the paleo primary productivity and (bio)geochemical cycling. However, many marine sediments that were deposited during geologically highly relevant episodes and which, thus, urgently require study for a better understanding of the paleo environment

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Klojdová, Iveta, Tomáš Milota, Jitka Smetanová, and Constantinos Stathopoulos. "Encapsulation: A Strategy to Deliver Therapeutics and Bioactive Compounds?" Pharmaceuticals 16, no. 3 (2023): 362. http://dx.doi.org/10.3390/ph16030362.

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There is a growing demand for efficient medical therapies without undesired side effects that limit their application. Targeted therapies such as deliveries of pharmacologically active compounds to a specific site of action in the human body are still a big challenge. Encapsulation is an effective tool for targeted deliveries of drugs and sensitive compounds. It has been exploited as a technique that can manage the required distribution, action and metabolism of encapsulated agents. Food supplements or functional foods containing encapsulated probiotics, vitamins, minerals or extracts are ofte

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Costa, Rosaria, Gioele Capillo, Ambrogina Albergamo, et al. "A Multi-screening Evaluation of the Nutritional and Nutraceutical Potential of the Mediterranean Jellyfish Pelagia noctiluca." Marine Drugs 17, no. 3 (2019): 172. http://dx.doi.org/10.3390/md17030172.

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The phylum Cnidaria is one of the most important contributors in providing abundance of bio- and chemodiversity. In this study, a comprehensive chemical investigation on the nutritional and nutraceutical properties of Mediterranean jellyfish Pelagia noctiluca was carried out. Also, compositional differences between male and female organisms, as well as between their main anatomical parts, namely bell and oral arms, were explored in an attempt to select the best potential sources of nutrients and/or nutraceuticals from jellyfish. With the exception of higher energy densities and total phenolic

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Mika, János. "Agrooter® - Skillful Natural Tubes to Enhance Soil Productivity and Manage Hydric Stress." Current Trends in Engineering Science (CTES) 4, no. 1 (2024): 1–3. http://dx.doi.org/10.54026/ctes/1055.

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Agrooter® is a Hungarian patent created by the first author, tested in several field experiments in Hungary and recently in some African countries. The point of the invention is that small tubes are mixed into the fertile soil, which keeps moisture or air in the soil, depending on their position. In the case of an entirely random distribution of the tubes within the soil, the tubes achieve both advantages. The point of this patent is the carefully designed size and amount of empty tubes fabricated from organic bio-degradable materials and micro-grinded specific minerals. Using these tubes in t

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Wang, Xiaohong, Florian Peine, Alexander Schmidt, et al. "Concept of Biogenic Ferromanganese Crust Formation: Coccoliths as Bio-seeds in Crusts from Central Atlantic Ocean (Senghor Seamount/Cape Verde)." Natural Product Communications 6, no. 5 (2011): 1934578X1100600. http://dx.doi.org/10.1177/1934578x1100600522.

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At depths of 2,000 to 3,000 m, seamounts from the Cape Verde archipelago (Central Atlantic Ocean) are largely covered with ferromanganese crusts. Here we studied 60 to 150 mm thick crusts from the Senghor Seamount (depth: 2257.4 m). The crusts have a non lamellated texture and are covered with spherical nodules. The chemical composition shows a dominance of MnO2 (26.1%) and Fe2O3 (38.8%) with considerable amounts of Co (0.74%) and TiO2 (2.1%). Analysis by scanning electron probe microanalyzer (EPMA) revealed a well defined compositional zonation of micro-layers; the distribution pattern of Mn

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16

Shapiro, T. N., N. A. Manucharova, and E. S. Lobakova. "Activity of alkanmonooxygenase <i>alk</i>B gene in strains of hydrocarbon-oxidizing bacteria isolated from petroleum products." Vavilov Journal of Genetics and Breeding 26, no. 6 (2022): 575–82. http://dx.doi.org/10.18699/vjgb-22-70.

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Alkanmonooxygenase enzymes AlkB and Cyp153 are responsible for the aerobic degradation of n-alkanes of petroleum and petroleum products. To prove the usage of n-alkanes from oil and petroleum products by hydrocarbon- oxidizing bacteria isolated from aviation kerosene TS-1 and automobile gasoline AI-95, the detection of the key genes alkB, Alk1, Alk2, Alk3 and Cyp153 encoding alkanmonooxygenases AlkB and Cyp153 (responsible for the oxidation of hydrocarbons with a certain chain length) was carried out. It was found that bacterial strains isolated from TS-1 jet fuel, except Deinococcus sp. Bi7,

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Yi, Wenhua, Shanjun Liu, Ruibo Ding, Heng Yue, Haoran Wang, and Jingli Wang. "Test Method for Mineral Spatial Distribution of BIF Ore by Imaging Spectrometer." Minerals 14, no. 9 (2024): 959. http://dx.doi.org/10.3390/min14090959.

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The spatial distribution characteristics of iron ore components are important when measuring the difficulty of their beneficiation. Polarized light microscopy and scanning electron microscopy are traditional methods with some shortcomings, including complicated operation and low efficiency. Most of the laboratory hyperspectral imaging techniques that have emerged in recent years have been focused on the field of mineral resource exploration. In contrast, the mineral distribution and tectonic characteristics of iron ores have been relatively poorly studied in the field of beneficiation. To addr

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18

Revenko, A. G. "X-ray spectral analysis development in Novosibirsk city (Electron probe microanalysis and X-ray fluorescence analysis using the synchrotron radiation)." Аналитика и контроль 25, no. 2 (2021): 155–73. http://dx.doi.org/10.15826/analitika.2021.25.2.006.

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Current article considers the contribution of X-ray physicists from the city of Novosibirsk to the formation and development of the two X-ray spectral analysis directions: electron probe microanalysis and X-ray fluorescence analysis using the synchrotron radiation. The research on geological topics at the Institute of Geology and Geophysics of the Siberian Branch of the USSR Academy of Sciences using the MS-46 electron probe microanalyzer of the French company CAMECA (since 1967) served as the basis for the development of methods for the quantitative X-ray microanalysis of rock-forming mineral

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Sadovski, Alexander. "MINERAL WATERS IN BULGARIA." Ecological Engineering and Environment Protection 2023, no. 1/2023 (2023): 17–26. http://dx.doi.org/10.32006/eeep.2023.1.1726.

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The present study aims to review the sources of mineral water in Bulgaria, as well as the various aspects of their use as an energy source, benefit for human health and the national economy. Several literary sources on the subject are cited. Statistical analysis was performed and data were summarized about their physical and chemical characteristics, and especially to find distribution by temperature. The production of cheap thermal energy from the geothermal plants contribute to the reduction of the environment pollution, which is of great importance for the country. The extremely good bio-cl

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Ab Ghani, Siti Soleha, and Nor Asiah Muhamad. "Review on Dissolved Fault Gases in Monitoring Bio-Oil Filled Transformer." Applied Mechanics and Materials 818 (January 2016): 69–73. http://dx.doi.org/10.4028/www.scientific.net/amm.818.69.

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The combination of solid insulation (usually cellulose paper) and liquid insulation (usually mineral oil) yield good dielectric properties at fair cost. However, arising concerns on environmental effect of mineral oil when leakage and its risk of fire has force researches for alternative fluids. One of the suitable options for replacement of mineral oil is biodegradable oil that is plant-based, high biodegradability, non-toxicity and high fire point. Some refining and modification to crude vegetable oils resulting to suitable transformer dielectric fluid such as BIOTEMP®, ENVIROTEMP® FR3 and P

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Hemes, S., G. Desbois, J. L. Urai, M. De Craen, and M. Honty. "Variations in the morphology of porosity in the Boom Clay Formation: insights from 2D high resolution BIB-SEM imaging and Mercury injection Porosimetry." Netherlands Journal of Geosciences - Geologie en Mijnbouw 92, no. 4 (2013): 275–300. http://dx.doi.org/10.1017/s0016774600000214.

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AbstractBoom Clay is considered as one of the potential host rocks for the disposal of high level and/or long lived radioactive waste in a geological formation in Belgium (Mol study site, Mol-1 borehole) and the Netherlands. The direct characterisation of the pore space is essential to help understand the transport properties of radionuclides in argillaceous materials.This contribution aims to characterise and compare the morphology of the pore space in different Boom Clay samples, representing end-members with regard to mineralogy (i.e. clay content) and grain-size distribution of this format

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Zhu, Dong Bin, An Ping Xu, Yun Xia Qu, Zhi Mei Mi, and Jian Qiang Li. "Fabrication and Antibacterial Performance of Bio-Graded Nano-Composite Materials by Using Inkjet Printing Method." Materials Science Forum 610-613 (January 2009): 1192–97. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.1192.

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The graded composite materials were fabricated by direct inkjet printing of nano-electropolar mineral and nano-hydroxyapatite powders for the study of inhibiting function on streptococcus mutans, which is a primary pathogen for human dental caries. The electropolar mineral can be utilized in many fields due to its spontaneous permanent polarity and far infrared emission properties. In this study, the graded distribution of the streptococcus mutans on the surface of graded composite materials was investigated by energy dispersion spectrometry, and the mechanism of which is that the streptococcu

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Virginia D, Dika, I. G. N. Sumanta Buana, Mohammad Kamil, Christino Boyke, Siti Dwi Lazuardi, and Pratiwi Wuryaningrum. "Biomethane-Compressed Natural Gas (Bio-CNG) Distribution Model In Support of The Liquefied Petroleum Gas (LPG) Substitution Program." IOP Conference Series: Earth and Environmental Science 1461, no. 1 (2025): 012030. https://doi.org/10.1088/1755-1315/1461/1/012030.

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Abstract Indonesia’s 2027 vision involves significantly reducing LPG imports to enhance energy independence. The aim is to promote alternative energy sources, such as Bio-CNG, and decrease reliance on imported fossil fuels. By developing and expanding domestic energy production, Indonesia intends to bolster its energy security and sustainability. Indonesia has been facing challenges to overcome the amount of energy imports, one of them being Liquified Petroleum Gas (LPG). Palm oil as one of the raw materials can be used to generate bioenergy in the future. On the other hand, it generates liqui

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Plass, Anna, Christian Schlosser, Stefan Sommer, Andrew W. Dale, Eric P. Achterberg, and Florian Scholz. "The control of hydrogen sulfide on benthic iron and cadmium fluxes in the oxygen minimum zone off Peru." Biogeosciences 17, no. 13 (2020): 3685–704. http://dx.doi.org/10.5194/bg-17-3685-2020.

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Abstract. Sediments in oxygen-depleted marine environments can be an important sink or source of bio-essential trace metals in the ocean. However, the key mechanisms controlling the release from or burial of trace metals in sediments are not exactly understood. Here, we investigate the benthic biogeochemical cycling of iron (Fe) and cadmium (Cd) in the oxygen minimum zone off Peru. We combine bottom water and pore water concentrations, as well as benthic fluxes determined from pore water profiles and from in situ benthic chamber incubations, along a depth transect at 12∘ S. In agreement with p

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Liu, Jie, Jianzhong Zhang, Li Jiang, Qi Lin, and Li Wan. "Polynomial-based density inversion of gravity anomalies for concealed iron-deposit exploration in North China." GEOPHYSICS 84, no. 5 (2019): B325—B334. http://dx.doi.org/10.1190/geo2018-0740.1.

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Inversion of residual gravity anomalies is an important geophysical technique for depicting subsurface density contrasts, for example, for mineral deposits. We have expressed subsurface density variations using depth-variable polynomial functions and developed the polynomial coefficient inversion (PCI) method, which is an alternative method for mapping subsurface density distributions by inverting the coefficients of density-contrast functions. PCI enables the linear inversion of density variations without vertically subdividing the subsurface. Synthetic tests indicate that PCI combines polyno

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Adaev, N. L., A. G. Amaeva, A. Kh Zanilov, and I. N. Adaev. "Distribution of trace elements in soil and plants under the action of bio-organic and mineral fertilizers." IOP Conference Series: Earth and Environmental Science 624 (January 8, 2021): 012203. http://dx.doi.org/10.1088/1755-1315/624/1/012203.

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Adaev, N. L., A. G. Amaeva, A. Kh Zanilov, and I. N. Adaev. "Distribution of trace elements in soil and plants under the action of bio-organic and mineral fertilizers." IOP Conference Series: Earth and Environmental Science 624 (January 8, 2021): 012203. http://dx.doi.org/10.1088/1755-1315/624/1/012203.

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Pienaar, D., A. J. B. Smith, L. C. Blignaut, and K. S. Viljoen. "Lithostratigraphic correlation and mineralogical facies characterisation of the banded iron and manganese formations of the Palaeoproterozoic Hotazel Formation of the Voëlwater Subgroup Transvaal Supergroup, Northern Cape Province, South Africa." South African Journal of Geology 128, no. 1 (2025): 13–52. https://doi.org/10.25131/sajg.128.0005.

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Abstract The Palaeoproterozoic Kalahari Manganese Field (KMF) hosts the world’s largest land-based manganese (Mn) resource within five structurally preserved deposits, of which the Main Kalahari Deposit (MKD) is, by far, the largest and best studied. The Mn ores occur as chemical sedimentary manganese formation (MnF) hosted in the cyclical depositional sequence of the Hotazel Formation which comprises three symmetrical sequences of banded iron formation (BIF), transitional hematite lutite (HL), and MnF. Conformably underlying and overlying the Hotazel Formation are the volcanic Ongeluk and car

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Hemes, S., G. Desbois, J. Klaver, and J. L. Urai. "Microstructural characterisation of the Ypresian clays (Kallo-1) at nanometre resolution, using broad-ion beam milling and scanning electron microscopy." Netherlands Journal of Geosciences 95, no. 3 (2016): 293–313. http://dx.doi.org/10.1017/njg.2016.16.

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AbstractBesides the Oligocene Boom Clay, the Ypresian clays – part of the Eocene Ieper Group (Kortrijk Formation and Kortemark Member) – are currently being investigated as an alternative host rock for the deep geological disposal of radioactive waste in Belgium and the Netherlands. In this study, broad-ion-beam milling and high resolution scanning electron microscopy (BIB-SEM) analyses were carried out to analyse the mineral fabrics and microstructures of representative Ypresian clay samples from different depths of the ON-Kallo-1 borehole (Kallo, Belgium). Qualitative microstructural observa

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Thupeng, Wilson Moseki. "Modelling the Botswana Pula/Us Dollar exchange rate using the Skewed generalized t (SGT) distributions." International Journal of Scientific Research and Management 9, no. 12 (2021): 10–16. http://dx.doi.org/10.18535/ijsrm/v9i12.as1.

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The economy of Botswana heavily relies on mineral exports (mainly diamond exports), which are largely dependent on the exchange rate. And, the US Dollar is one of the most important currencies in the basket of currencies to which the Botswana Pula is pegged. Therefore, this paper seeks to empirically establish the baseline characteristics of the Botswana Pula (BWP) and the US Dollar (USD) exchange rate and to identify the most plausible probability distribution from the skewed generalized t (SGT) family that can be used to model the log-returns of the daily BWP/USD exchange rates for the perio

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Lohmeier, S., B. G. Lottermoser, T. Schirmer, and W. Fuchsloch. "Reprocessing potential of pegmatite tailings for rare metal extraction and brick fabrication, Uis, Namibia." South African Journal of Geology 124, no. 3 (2021): 639–62. http://dx.doi.org/10.25131/sajg.124.0015.

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Abstract Historic tin mining and mineral processing of the Uis pegmatite deposit (Namibia) has resulted in a series of tailings impoundments. In this study, Uis tailings were characterised to establish their suitability for brick manufacturing and reprocessing potential for rare metals (Be, Li, Nb, Ta). Tailings occur on-site as two distinct types (a) fine- to medium-grained sand (d50 = 120 to 420 μm) in dune-like spoil dumps; and (b) fine- to medium-grained sand (Fraction A: d50 = 120 to 410 μm; ~25% of tailings type) and fine-grained silt (Fraction B: d50 = 18 to 83 μm; ~75% of tailings type

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Dedi Rosa Putra Cupu and Kahar Osman. "Numerical Analysis of the Effect of Temperature on the Pressure and Film Thickness for Line Contact Elastohydrodynamic Lubrication Using Bio-Based Oils as Lubricants." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 92, no. 1 (2022): 90–104. http://dx.doi.org/10.37934/arfmts.92.1.90104.

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This paper develops a numerical model to study the effect of lubricant’s temperature on generated pressure and film thickness formation for the line contact elastohydrodynamic lubrication (EHL) using some bio-based oils as lubricants. In this study, a contact between inner ring and cylindrical roller of rolling element bearing is modelled as the line contact of EHL. The Reynolds equation is simultaneously solved with elastic deformation equation and pressure-viscosity equation. This aims to calculate the pressure distributions and film thickness profiles with a range of seven vegetable oils as

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Menshakova, M. Yu, K. K. Moskvin, and S. A. Khodjaliev. "Study of the Dynamics of Oil Destruction with the Use of Bacterial Biological Preparations in the Conditions of the Far North." BIO Web of Conferences 63 (2023): 05011. http://dx.doi.org/10.1051/bioconf/20236305011.

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A study of the dynamics of crude oil decomposition was carried out using the bio-preparations “Glaukoil” and “Lenoil” and various methods (aeration, application of a sorbent and a biological product at different times, the use of a polymer shelter, the addition of a moisture-retaining component and the distribution of the dose of mineral fertilizers) in order to optimize the oil destruction technology at emergency oil spills. It is shown that the most effective methods are the use of a polyethylene film to maintain a higher temperature during oil decomposition, additional aeration, and the use

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Petřeková, Karin, Nadezhda Borzenko, Martina Kovalová, and Nikol Gottfriedová. "Assessment of Body Mass Index, Body Composition, Physical Activity, and Dietary Preferences in University Students: A Pilot Study." Obesities 4, no. 1 (2024): 35–44. http://dx.doi.org/10.3390/obesities4010004.

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(1) Background: Body composition analysis, particularly the assessment of the amount and distribution of body fat and muscle mass in young people, is of considerable clinical importance for the detection of nutritional disorders. (2) Methods: University students aged 19–25 years had their body composition measured using a bioimpedance (BIA) device InBody 370S. Furthermore, a questionnaire survey was performed using the questionnaires: factors that influence your choice of food (FCQ); food preference questionnaire for adolescents and adults (FPQ); the international physical activity questionnai

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Schmatz, Joyce, Jop Klaver, Mingze Jiang, and Janos L. Urai. "Nanoscale Morphology of Brine/Oil/Mineral Contacts in Connected Pores of Carbonate Reservoirs: Insights on Wettability From Cryo-BIB-SEM." SPE Journal 22, no. 05 (2017): 1374–84. http://dx.doi.org/10.2118/180049-pa.

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Summary We used broad-ion-beam slope cutting in combination with scanning electron microscopy undertaken under cryogenic conditions (Cryo-BIB-SEM) to study mineral/oil/brine contacts in reservoir carbonates. This direct-imaging method allows pore-scale investigation of in-situ fluids and their distributions down to the nanometer scale. In this study, we compare two types of carbonate reservoirs: a fine-grained Lixhe limestone (Belgium) and a coarse-grained limestone from the Maastricht area (The Netherlands). In both rock types, we first quantify the porosity with BIB-SEM and derive the spatia

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Huang, Chun-Kai, Knowledge Chinhamu, Chun-Sung Huang, and Jahvaid Hammujuddy. "Generalized Hyperbolic Distributions And Value-At-Risk Estimation For The South African Mining Index." International Business & Economics Research Journal (IBER) 13, no. 2 (2014): 319. http://dx.doi.org/10.19030/iber.v13i2.8447.

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South Africa is a cornucopia of mineral riches and the performance of its mining industry has significant impacts on the economy. Hence, an accurate distributional assumption of the underlying mining index returns is imperative for the forecasting and understanding of the financial market. In this paper, we propose three subclasses of the generalized hyperbolic distributions as appropriate models for the Johannesburg Stock Exchange (JSE) Mining Index returns. These models are shown to outperform the traditional assumption of normality and accommodate for a number of stylized features, such as

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PAVLOVA, N. A., V. V. SHEPELEV, M. V. DANZANOVA, L. D. IVANOVA, and V. A. EFREMOVA. "Mineral medicinal groundwaters in Central Yakutia and prospects for their use." Arctic and Subarctic Natural Resources 28, no. 2 (2023): 236–47. http://dx.doi.org/10.31242/2618-9712-2023-28-2-236-247.

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In this study, we reviewed and summarized the data on permafrost and groundwater areas of Central Yakutia to understand the formation and distribution of subpermafrost mineral waters of sodium bicarbonate and chloride-bicarbonate types, and to evaluate their potential use for medical purposes. Analysis of the data indicated that these low-mineralized groundwaters are basic analogues to the Maykop and Karachi mineral waters, with no particular bioactive components. These mineral water types contain 400 to 1200 mg/dm3 bicarbonates, 100 to 600 mg/dm3 chlorides, 50 to 250 mg/dm3 (Karachi) and <

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Xiao, Liping, Heping Zhu, Matthew Wallhead, Leona Horst, Peter Ling, and Charles R. Krause. "Characterization of Biological Pesticide Deliveries through Hydraulic Nozzles." Transactions of the ASABE 61, no. 3 (2018): 897–908. http://dx.doi.org/10.13031/trans.12698.

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Abstract. Increased use of biopesticides has spurred demand for efficient and effective delivery systems. To this goal, laboratory tests were conducted to investigate six different classes of biopesticides discharged from five different types of flat-fan nozzles, each with three flow capacities. The biopesticide classes were horticultural oil insecticide (HOI), bacterial biofungicide (BBF), botanical extract bio-insecticide (BEBI), liquid fungal bio-insecticide (FBI-ES), wettable powder fungal bio-insecticide (FBI-WP), and mineral salt biofungicide (MSBF). Droplet size distribution, spray patt

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Hu, Zhazha, Shuangfang Lu, Jop Klaver, et al. "An Integrated Imaging Study of the Pore Structure of the Cobourg Limestone—A Potential Nuclear Waste Host Rock in Canada." Minerals 11, no. 10 (2021): 1042. http://dx.doi.org/10.3390/min11101042.

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With the development of imaging technology, tools to quantitatively describe pore structure, morphology, and connectivity have been widely applied on low permeable rocks; however, it is still questionable to what extent this information can be used to predict permeability. Applicability and comparability of different techniques are discussed here for the Middle Ordovician Cobourg limestone (Canada), a rock dominated by calcite grains of variable sizes (µm–cm) and heterogeneously distributed quartz, dolomite, pyrite, and meshy clay minerals. Absolute porosities determined by helium pycnometry (

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Xu, Longfei, Jinchuan Zhang, Jianghui Ding, et al. "Pore Structure and Fractal Characteristics of Different Shale Lithofacies in the Dalong Formation in the Western Area of the Lower Yangtze Platform." Minerals 10, no. 1 (2020): 72. http://dx.doi.org/10.3390/min10010072.

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The purpose of this article was to quantitatively investigate the pore structure and fractal characteristics of different lithofacies in the upper Permian Dalong Formation marine shale. Shale samples in this study were collected from well GD1 in the Lower Yangtze region for mineral composition, X-ray diffraction (XRD), and nitrogen adsorption–desorption analysis, as well as broad-ion beam scanning electron microscopy (BIB-SEM) observation. Experimental results showed that the TOC (total organic carbon) content and vitrinite reflectance (Ro) of the investigated shale samples were in the ranges

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Beydoun, Hassan, Michael Polen, and Ryan C. Sullivan. "A new multicomponent heterogeneous ice nucleation model and its application to Snomax bacterial particles and a Snomax–illite mineral particle mixture." Atmospheric Chemistry and Physics 17, no. 22 (2017): 13545–57. http://dx.doi.org/10.5194/acp-17-13545-2017.

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Abstract. Some biological particles, such as Snomax, are very active ice nucleating particles, inducing heterogeneous freezing in supercooled water at temperatures above −15 and up to −2 °C. Despite their exceptional freezing abilities, large uncertainties remain regarding the atmospheric abundance of biological ice nucleating particles, and their contribution to atmospheric ice nucleation. It has been suggested that small biological ice nucleating macromolecules or fragments can be carried on the surfaces of dust and other atmospheric particles. This could combine the atmospheric abundance of

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Golubić, Stjepko, Crescenzo Violante, Anđelka Plenković-Moraj, and Tonći Grgasović. "Travertines and calcareous tufa deposits: an insight into diagenesis Article Sidebar." Geologia Croatica 61, no. 2-3 (2008): 363–78. http://dx.doi.org/10.4154/gc.2008.28.

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Travertines and calcareous tufa are porous deposits formed by interactions between ambient precipitation of calcium carbonate and resident organisms under different temperature regimes. The distinctions between travertine as thermal spring deposits and calcareous tufa (Kalktuff) as deposits in the springs and rivers at ambient temperatures are fluid. Both represent end points in bio- and physico-chemical calcification processes across a broad gradient of temperature, mineral composition and ion saturation levels. Ecological preferences of micro- and macroorganisms in travertine depositional sy

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Zhou, Ziwu, Ao Xia, Rui Guo, et al. "Big Data Processing Application on the Identification Method of the Dominant Channel in Polymer Flooding." Processes 13, no. 3 (2025): 630. https://doi.org/10.3390/pr13030630.

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Polymer flooding is a critical enhanced oil recovery technique; however, the development of polymer channeling along dominant channels during its later stages can adversely affect the process by increasing comprehensive water cut and dispersing remaining oil, thereby diminishing development benefits. This study aims to address this challenge by investigating the identification methods and distribution patterns of dominant channels in polymer flooding to inform and optimize the development strategy. Through a series of experiments, we analyzed how factors such as permeability, heterogeneity, re

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Bondarenko, S. M., V. О. Syomka, L. M. Stepanyuk, O. V. Hrinchenko, B. N. Ivanov, and V. M. Belskyi. "Mineralogical and geochemical features of bismuth in Proterozoic ore-bearing structures of west part of the Ingul megablok (Ukrainian shield)." Geochemistry and ore formation 41 (2020): 3–11. http://dx.doi.org/10.15407/gof.2020.41.003.

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In this paper we summarize the geological information about regional distribution features of bismuth in the Ingul megablok of Ukrainian shield. Different Proterozoic ore sites situated within the Bratsk-Zvenihorodka and the Ingul-Tyasmyn metallogenic zone are considered. They are characterized by the presence of various scale deposits of uranium, rare metals (Li, Rb, Cs, Ta, Nb, W, Sn) and precious metals (Au, Ag). Minerals-concentrators of bismuth and main paragenetic associations comprising native Bi, tellurides, bismutite, maldonite, wittichenite, parkerite, matildite are investigated. It

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Li, Shi, Chang Liu, and Jianping Chen. "Mineral Prospecting Prediction via Transfer Learning Based on Geological Big Data: A Case Study of Huayuan, Hunan, China." Minerals 13, no. 4 (2023): 504. http://dx.doi.org/10.3390/min13040504.

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In the big data era, mineral explorations need to accommodate for the growth in spatial dimensions and data dimensions, as well as the data volume and the correlation between data. Aiming to overcome the problems of limited and scattered data sources, chaotic data types, questionable data quality, asymmetric data information, and small sample sizes in current mineral prospecting data, this paper improved traditional 3D prediction methods based on the characteristics and actual needs of relevant mineral prospecting data. First, for the regions with incomplete data, a new 3D prediction method ba

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Feldmann, J., and Hk Müller-Buschbaum. "Kristallstrukturuntersuchung an einem bismuthaltigen Hollandit: Bi1.9CU4V4O16 / Crystal Structure Investigation of the Bismuth Containing Hollandite: Bi1.9Cu4V4O16." Zeitschrift für Naturforschung B 50, no. 8 (1995): 1163–66. http://dx.doi.org/10.1515/znb-1995-0806.

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Single crystals of Bi1.9Cu4V4O16 have been prepared by quenching of CO2-LASER heated samples. They were investigated by X-ray techniques. The compound crystallizes with tetragonal symmetry, space group C54h-I4 /m , a = 9.945(2) Å , c = 2.915(3) Å, Z = 1, and is isotypic to the mineral Hollandite. Bi1.9Cu4V4O16 is the first Hollandite with a statistical distribution of vanadium and copper in the network of octahedra. Calculations of the Coulomb terms of lattice energy led to a distance of bismuth to the lone pair of 1.07 Å. Considering the lone pair as part of the coordination sphere of Bi3+ a

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Vandenbussche, Sophie, Sieglinde Callewaert, Kerstin Schepanski, and Martine De Mazière. "North African mineral dust sources: new insights from a combined analysis based on 3D dust aerosol distributions, surface winds and ancillary soil parameters." Atmospheric Chemistry and Physics 20, no. 23 (2020): 15127–46. http://dx.doi.org/10.5194/acp-20-15127-2020.

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Abstract. Mineral dust aerosol is a key player in the climate system. Determining dust sources and the spatio-temporal variability of dust emission fluxes is essential for estimating the impact of dust on the atmospheric radiation budget, cloud and precipitation formation processes, the bio-productivity and, ultimately, the carbon cycle. Although much effort has been put into determining dust sources from satellite observations, geo-locating active dust sources is still challenging and uncertainties in space and time are evident. One major source of uncertainty is the lack of clear differentia

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Kunikowski, Wiktor, Pawel Rozga, Bartlomiej Pasternak, Jakub Staniewski, Filip Stuchala, and Konrad Strzelecki. "Impact of Electrode Distance in a Quasi-Uniform Model Electrode System on Lightning Impulse Breakdown Voltage in Various Insulating Liquids." Energies 17, no. 4 (2024): 782. http://dx.doi.org/10.3390/en17040782.

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This study presents findings on the influence of gap length distance on the lightning impulse breakdown voltage of three dielectric liquids of different chemical origins. The liquids were tested in a model electrode system with a quasi-uniform electric field distribution and a pressboard plate placed on the grounded electrode. The experimental studies were supported using calculations and simulations to show the individual relationships between the lightning impulse breakdown voltage and gap distance, which represent the so-called volume effect of the most stressed liquid. The results of the e

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Safina, N. P., V. A. Kotlyarov, and I. A. Blinov. "Minerals of the Supergroup of Alunite in Layered Ores of the Yaman-Kasy Sulfide Deposit, Southern Urals: Morphology, Assemblages, and Chemical Composition." Zapiski RMO (Proceedings of the Russian Mineralogical Society) CLII, no. 6 (2023): 95–110. http://dx.doi.org/10.31857/s0869605523060047.

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The article describes the findings of minerals of the alunite supergroup: crandallite, ginsdalite, and alunite in hematite-containing thin-layered pyrite ores with increased total REE contents (up to 110 ppm). Crandallite forms elongated aggregates (up to 120 microns) with a rhythmically zonal structure and an uneven distribution of REE in them. Less common are spherulite aggregates (up to 120 microns) in association with alunite, quartz, chlorite, and hematite. The main feature of crandallite is high Pb contents (7–19 wt % PbO). Individual grains of crandallite contain (wt %) up to 1.84 La2O3

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Wang, Gongwen, Shouting Zhang, Changhai Yan, et al. "Resource-environment joint forecasting using big data mining and 3D/4D modeling in Luanchuan mining district, China." Earth sciences and subsoil use 44, no. 3 (2021): 219–42. http://dx.doi.org/10.21285/2686-9993-2021-44-3-219-242.

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The Fourth generation industrial age and 5G + intelligent communication in the "Fourth Paradigm of Science" in the 21st century provide a new opportunity for research on the relationship between mining development and environmental protection. This paper is based on the theory of metallogenic geodynamics background, metallogenic process and quantitative evaluation and chooses the Luanchuan district as a case study, using deep-level artificial intelligence mining and three/four-dimensional (3D/4D) multi-disciplinary, multi-parameter and multi-scale modeling technology platform of geoscience big

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