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Journal articles on the topic 'Hazardous gas mixtures'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Cherdantsev, S. V., P. A. Shlapakov, and K. S. Lebedev. "Analysis of a sudden release of a gas-coal mixture from a conical cavity formed during the gas outburst." Mining Industry Journal (Gornay Promishlennost), no. 6/2023 (December 25, 2023): 109–15. http://dx.doi.org/10.30686/1609-9192-2023-6-109-115.

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Indispensable attributes in underground coal mining are methane and coal dust of various particle sizes. When they are mixed, coal-gas mixtures are formed, predisposed to various hazardous and extremely hazardous gas-dynamic phenomena, primarily to sudden emissions, accompanied by formation of cavities in the coal massif and intensive release of coal-gas mixtures from these cavities into the mine workings. The article deals with the problem of a one-dimensional stationary flow of a gas-coal mixture in an underground cone-shaped cavity formed during a sudden release. The Euler equation of motio

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Tugyi, Levente, Zoltán Siménfalvi, and L. Gábor Szepesi. "Investigation of the explosive atmospheres extent of hydrogen and methane gas mixtures by calculation and FLACS-CFD simulation." Multidiszciplináris Tudományok 14, no. 3 (2024): 44–60. https://doi.org/10.35925/j.multi.2024.3.5.

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Explosive atmosphere is defined as a mixture of dangerous substances with air, under atmospheric conditions, in the form of gases, vapours, mist or dust in which, after ignition has occurred, combustion spreads to the entire unburned mixture. Methane-hydrogen mixtures will become more and more important for energy use in the near future. It has many positive economic and environmental benefits, while the risk of explosion is partly forgotten. It is necessary to identify hazardous areas in the interpretation of technological equipment. The applicable standard, EN IEC 60079-10-1:2020, defines th

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3

Gomes, J. F., R. M. Miranda, P. A. Carvalho, and M. L. Quintino. "The effect of metal transfer modes and shielding gas composition on the emission of ultrafine particles in MAG steel welding." Soldagem & Inspeção 19, no. 2 (2014): 168–76. http://dx.doi.org/10.1590/0104-9224/si1902.09.

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The present study aims to characterize ultrafine particles emitted during gas metal arc welding of mild steel and stainless steel, using different shielding gas mixtures, and to evaluate the effect of metal transfer modes, controlled by both processing parameters and shielding gas composition, on the quantity and morphology of the ultrafine particles. It was found that the amount of emitted ultrafine particles (measured by particle number and alveolar deposited surface area) are clearly dependent from the main welding parameters, namely the current intensity and the heat input of the welding p

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Karim, G. A., and V. Panlilio. "Flame Propagation and Lean-Limit Extinction Within Stratified Mixtures Involving a Diluent Gas." Journal of Energy Resources Technology 114, no. 3 (1992): 216–20. http://dx.doi.org/10.1115/1.2905944.

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Flame propagation within confined, stratified gaseous environments were investigated experimentally. The diluents nitrogen and helium were used in turn to overlay initially combustible methane-air or hydrogen-air mixtures. Gas stratification was achieved by allowing the two initially homogeneous gases to interdiffuse for a certain period of time at constant temperature and pressure within a long, vertical, smooth, closed, circular tube. Upward flame propagation was examined following spark ignition while the tube was closed at the top but open at the bottom. Near-extinction flame speeds, lower

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5

Holinko, Vasyl, Valentyna Zabelina, Oleksandr Holinko, and Oleg Kuznetsov. "Investigation of the operation of thermocatalytic sensors in explosion hazard monitoring systems for technogenic objects." Mining of Mineral Deposits 19, no. 1 (2025): 142–50. https://doi.org/10.33271/mining19.01.142.

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Purpose. The research aims to theoretically and experimentally investigate the operation of thermocatalytic sensors in the entire range of possible concentrations of explosion-hazardous vapors and gases to assess the unambiguous operation of explosion protection equipment. Methods. Analytical methods, classical provisions of electrical engineering, thermodynamics and catalysis, experimental studies of serial single-chamber pellet-type thermocatalytic sensors with a platinum-palladium catalyst, as well as the evaluation and generalization of experimental results are used in the research. Findin

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Zhu, Hongmei, Yifeng Wang, Nijie Jing, Xuguang Jiang, Guojun Lv, and Jianhua Yan. "Study on the evolution and transformation of chlorine during co-processing of hazardous waste incineration residue in a cement kiln." Waste Management & Research: The Journal for a Sustainable Circular Economy 37, no. 5 (2019): 495–501. http://dx.doi.org/10.1177/0734242x19828147.

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The co-processing of hazardous waste in a cement kiln can eliminate a large quantity of hazardous wastes, but the excessive existence of chlorine will affect not only the operation of a cement kiln but also the quality of cement products. In this study, the mixtures of hazardous waste incineration residue and raw meal were incinerated in a high temperature tubular furnace. The distribution ratio of chlorine in flue gas, clinker and fly ash under different experiment conditions was obtained and the influence of the co-processing conditions on chlorine evolution and transformation was studied. T

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Rusin, Andrzej, and Katarzyna Stolecka-Antczak. "Assessment of the Safety of Transport of the Natural Gas–Ammonia Mixture." Energies 16, no. 5 (2023): 2472. http://dx.doi.org/10.3390/en16052472.

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The decarbonisation of many sectors of the economy, including primarily the energy sector, results in the gradual elimination of hydrocarbon fuels, especially coal. During the transition period, it will be possible to use natural gas, the combustion of which is associated with lower carbon dioxide emissions. Further reduction in this emission is possible with the use of mixtures of natural gas with other gases, e.g., ammonia. Ammonia, widely used in many industries, has recently been described as the emission-free fuel of the future. However, both of these gases are hazardous substances. Natur

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8

Kulikova, T. V., A. V. Maiorova, A. P. Safronov, et al. "Pyrolysis of derivatives of technical mixtures of polychlorinated biphenyls." Доклады Академии наук 487, no. 6 (2019): 630–35. http://dx.doi.org/10.31857/s0869-56524876630-635.

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Thermal stability and gas phase composition of the most common technical mixtures of polychlorinated biphenyls “Sovol” and “Trichlorobiphenyl” were studied by simultaneous thermal analysis and mass spectrometry compared to their derivatives synthesized by the interaction of these mixtures with sodium methoxide in dimethyl sulfoxide and methanol. For the first time it was established that derivatives of polychlorinated biphenyls are less thermostable compounds as compared with the initial products and under pyrolysis they undergo not only evaporation stages, but also decomposition processes to

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Stroy, A. V., O. V. Lobozova, G. D. Danilevich та ін. "Вreathing in helium-oxygen gas mixtures as a means of emergency restoration of the working capacity of specialists of hazardous occupations". Marine Medicine 8, № 2 (2022): 70–76. http://dx.doi.org/10.22328/2413-5747-2022-8-2-70-76.

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OBJECTIVES: To evaluate the effectiveness of using helium-oxygen breathing mixtures for emergency restoration of the working capacity of specialists of hazardous occupations.MATERIALS AND METHODS: 18 male military personnel (age 25–40 years), divided into the main group and the comparison group (9 people each). All servicemen showed signs of decreased efficiency. In the main group, a procedure of 40-minute breathing with a heated gas mixture with an Oxygen content of 25% vol., Helium content of 75% vol. was prescribed. The comparison group underwent standard 40-minute Oxygen therapy.RESULTS: U

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Kozyrev, S. A., and E. A. Vlasova. "Gas hazard of explosives used in the mining industry." Mining Industry Journal (Gornay Promishlennost), no. 5/2021 (November 12, 2021): 106–11. http://dx.doi.org/10.30686/1609-9192-2021-5-106-111.

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Reducing emissions of hazardous pollutants that have a negative impact on the environment and human health has been approved as one of the strategic objectives of Russia's development. More than 90% of minerals in mined using blast energy. Despite an increase in the share of non-explosive component mixtures used in mining, blasting still poses a hazard to miners as the gaseous detonation products are potentially dangerous. The composition of blast gaseous products is extremely important in underground blasting because air exchange is difficult under these conditions and the blast products can

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Ramaiyan, Kannan Pasupathikovil, Unab Javed, Alexandre V. Morozov, Eric L. Brosha, Rangachary Mukundan, and Cortney R. Kreller. "A Four-Electrode Mixed-Potential Sensor Array for Simultaneous Decoding of Hazardous Multi-Gas Mixtures." ECS Meeting Abstracts MA2020-01, no. 28 (2020): 2043. http://dx.doi.org/10.1149/ma2020-01282043mtgabs.

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12

Zagnit’ko, A. V., N. P. Zaretskii, I. D. Matsukov, et al. "Low-Temperature Three-Channel Gas Analyzers in Optical Monitoring of Fire Hazard Liquefied Natural Gas Outflows." Журнал физической химии 97, no. 1 (2023): 183–88. http://dx.doi.org/10.31857/s0044453723010375.

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A network of three-channel low-temperature infrared-optical gas analyzers with a response time of 1 s is developed for detecting explosive and fire hazardous concentrations of gasified liquefied natural gas (LNG) at temperatures up to 150 K. Their characteristics are described in an analysis of its large-scale emissions into the atmosphere. It is shown that during pulsed LNG emissions in the form of submerged jets and spills on standard concrete and water, large-scale areas of mixtures of air, methane, and light alkane vapors form with an explosive concentration that fluctuates in time and vol

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13

Cherdantsev, S. V., P. A. Shlapakov, S. I. Goloskokov, and D. N. Batrakov. "Construction and implementation of a thermal model of aeromethane mixture combustion in the mine atmosphere, considering its kinetics." Occupational Safety in Industry, no. 9 (September 2021): 7–14. http://dx.doi.org/10.24000/0409-2961-2021-9-7-14.

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At the coal deposits exploitation by using underground methods, as a rule, negative factors that reduce coal production and miners' safety exhibit. These factors include, first of all, methane emitted from the broken coal and the coal dust as an inevitable result of work of headers and cleansing combines. Interacting with the atmosphere of mines, methane and coal dust generate dust- and dust-gas-aerial mixtures where thermophysical and chemical processes take place. First of all, these processes are combustion and detonation that until recently were included into the category of highly hazardo

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14

Qadir, Salman, Arshad Hussain, and Muhammad Ahsan. "A Computational Fluid Dynamics Approach for the Modeling of Gas Separation in Membrane Modules." Processes 7, no. 7 (2019): 420. http://dx.doi.org/10.3390/pr7070420.

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Natural gas demand has increased rapidly across the globe in the last decade, and it is set to play an important role in meeting future energy requirements. Natural gas is mainly produced from fossil fuel and is a side product of crude oil produced beneath the earth’s crust. Materials hazardous to the environment, like CO2, H2S, and C2H4, are present in raw natural gas. Therefore, purification of the gaseous mixture is required for use in different industrial applications. A comprehensive computational fluid dynamics (CFD) model was proposed to perform the separation of natural gas from other

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15

Zhang, Junyu, Yingying Xue, Tao Zhang, et al. "Detection of Hazardous Gas Mixtures in the Smart Kitchen Using an Electronic Nose with Support Vector Machine." Journal of The Electrochemical Society 167, no. 14 (2020): 147519. http://dx.doi.org/10.1149/1945-7111/abc83c.

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16

Hussian, Raid. "Use of Cement Kiln Dust and Silica Fume as partial replacement for cement in concrete." IOP Conference Series: Earth and Environmental Science 877, no. 1 (2021): 012045. http://dx.doi.org/10.1088/1755-1315/877/1/012045.

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Abstract Cement is amongst the most polluting materials utilized in the building sector, contributing to a variety of hazardous pollutants, including greenhouse gas emissions. This raises health impacts related to the manufacture of cement. As a result, a substitute substance for conventional cement with low environmental effects and better building characteristics is required. The purpose of the study would be to look at the consequences of using supplementary cementitious materials (SCMS) to substitute cement in a concrete mix partially. This study employed silica fume (SF) and cement kiln d

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17

Shamsutdinova, I. I., N. V. Vadulina, A. O. Salimov, A. I. Ponomoraev, and J. F. Ismatov. "Ensuring safety in gas mine development." IOP Conference Series: Earth and Environmental Science 839, no. 4 (2021): 042047. http://dx.doi.org/10.1088/1755-1315/839/4/042047.

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Abstract In the Russian Federation, the main gas reserves are located in Siberia, and they are also present in the North Caucasus and the Black Sea basin. The largest gas fields in Russia are in harsh climatic conditions and drilling remains the main method of their development. Prior to its use, a preliminary study of rocks is required. Safety rules in the oil and gas industry are always relevant, taking into account, as a rule, harsh natural and climatic conditions in promising gas production regions. The forecasts for the growth of Russia’s gas industry varied greatly depending on the overa

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18

Dudragne, L., Ph Adam, and J. Amouroux. "Time-Resolved Laser-Induced Breakdown Spectroscopy: Application for Qualitative and Quantitative Detection of Fluorine, Chlorine, Sulfur, and Carbon in Air." Applied Spectroscopy 52, no. 10 (1998): 1321–27. http://dx.doi.org/10.1366/0003702981942654.

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Detection limits for the main heteroatoms in pollutants and chemical agents have been determined in atmospheric conditions with the use of the time-resolved laser-induced breakdown spectroscopy (TRELIBS) method. This method presents many advantages for detection in hazardous or corrosive gas mixtures where sampling systems are not usable. Moreover, low concentrations of fluorine, chlorine, sulfur, and carbon can be measured with short analysis times. Currently, concentration limits are close to 10–50 ppm (w/w) for F, Cl, and C atoms, while presently only 1500 ppm (w/w) limits are reached for S

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19

Richert, Clemens, and Felix Krupp. "Encapsulating Organic Crystals (EnOCs)." Synlett 28, no. 14 (2017): 1763–66. http://dx.doi.org/10.1055/s-0036-1590971.

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Achieving efficient capture, storage and release of small molecules is a challenge. Most materials that can harbor small molecules have been studied in the context of gas storage or separation. Formulations for hazardous reagents have only recently attracted attention, when organic compounds were discovered that encapsulate a broad range of guest molecules in crystals. Such encapsulating organic crystals (EnOCs) can suppress problematic properties of reagents and allow for controlled release in reaction mixtures. Unlike materials used for gas storage, which possess permanent porosity, their ca

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20

Zaburdayev, V. S., and S. N. Podobrazhin. "Methane Injury-Risk at the Russian Mines." Occupational Safety in Industry, no. 9 (September 2021): 69–74. http://dx.doi.org/10.24000/0409-2961-2021-9-69-74.

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Conditions are given concerning the development of methane-bearing coal seams in Russia, the chronology of injuries from explosions and outbreaks of methane-air mixtures at the Russian mines for a quarter of a century of developing coal seams at the nine deposits. The emergency was studied in 174 mine incidents, which occurred mainly at the mines of Kuzbass, Vorkuta coal deposit, Eastern Donbass, Chelyabinsk basin, Primorye and Sakhalin. Emergency objects - excavation areas, preparation faces and mined-out areas of the mines. The sources of ignition of methane-air mixture are drilling and blas

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21

Halak, О., N. Poltorak, О. Kravchuk, V. Synko, and Y. Korol. "APPLICATION OF TITANIUM OXIDE COATINGS FOR NEUTRALIZATION OF HAZARDOUS CHEMICAL SUBSTANCES." Collection of scientific works of Odesa Military Academy 2, no. 12 (2019): 131–36. http://dx.doi.org/10.37129/2313-7509.2019.12.2.131-136.

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Contamination of hazardous chemicals is currently considered one of the major environmental problems. The methods of purification of gaseous emissions depending on the physicochemical properties of pollutants, in particular dangerous chemical, their aggregate state, concentration in the gas environment are studied in this article. The effect of aerosol content such as dust and soot is analyzed as well as the efficiency of purification methods at different temperature intervals, methods of purification of multicomponent mixtures. The comparative characteristics of thermochemical, reagent, sorpt

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Zheng, Canda, Yunbo Shi, Bolun Tang, and Jianhua Zhang. "Black Phosphorus–Tungsten Oxide Sandwich-like Nanostructures for Highly Selective NO2 Detection." Sensors 24, no. 5 (2024): 1376. http://dx.doi.org/10.3390/s24051376.

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Modern chemical production processes often emit complex mixtures of gases, including hazardous pollutants such as NO2. Although widely used, gas sensors based on metal oxide semiconductors such as WO3 respond to a wide range of interfering gases other than NO2. Consequently, developing WO3 gas sensors with high NO2 selectivity is challenging. In this study, a simple one-step hydrothermal method was used to prepare WO3 nanorods modified with black phosphorus (BP) flakes as sensitive materials for NO2 sensing, and BP-WO3-based micro-electromechanical system gas sensors were fabricated. The chara

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Kask, Maarja, Marina Krichevskaya, Sergei Preis, and Juri Bolobajev. "Oxidation of Aqueous Toluene by Gas-Phase Pulsed Corona Discharge in Air-Water Mixtures Followed by Photocatalytic Exhaust Air Cleaning." Catalysts 11, no. 5 (2021): 549. http://dx.doi.org/10.3390/catal11050549.

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The treatment of wastewaters containing hazardous volatile organic compounds (VOCs) requires the simultaneous treatment of both water and air. Refractory toluene, extensively studied for its removal, provides a basis for the comparison of its abatement methods. The oxidation of aqueous toluene by gas-phase pulsed corona discharge (PCD) in combination with the subsequent photocatalytic treatment of exhaust air was studied. The PCD treatment showed unequalled energy efficiencies in aqueous and gaseous toluene oxidation, reaching, respectively, up to 10.5 and 29.6 g·kW−1·h−1. The PCD exhaust air

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Glushkov, Dmitrii, Galina Nyashina, Anatolii Shvets, Amaro Pereira, and Anand Ramanathan. "Current Status of the Pyrolysis and Gasification Mechanism of Biomass." Energies 14, no. 22 (2021): 7541. http://dx.doi.org/10.3390/en14227541.

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The development of the world economy goes hand in hand with increased energy consumption and global warming caused by greenhouse gases. These issues can be tackled by implementing promising technologies of power generation. They differ from the known ones in that new energy resources are involved, e.g., mixtures of various types of biomass, provided that hazardous gas emissions during the production process are minimized. The development of high-potential energy-efficient and environmentally friendly technologies which use biofuel in the energy industry requires scientific evidence for the mec

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Markov, A. G., and A. S. Kharlamenkov. "Problems of Recording the State of Lightning Protection Systems and Protection from Static Electricity when Assessing the Fire Risk Magnitude at Production Facilities." Occupational Safety in Industry, no. 11 (November 2021): 81–86. http://dx.doi.org/10.24000/0409-2961-2021-11-81-86.

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In paragraph 10 of Chapter 2 of the Methodology for determining the calculated values of fire risk at the production facilities, the list of the most likely events that may be the causes of fire-hazardous situations is presented. This list contains the phrase «the appearance of ignition sources in the places of formation of combustible gas-air mixtures». There are no more specific mentions about the probability of a fire from static electricity discharges and lightning strikes, as well as any other sources. This situation, at first glance, does not pose any problem, since it is assumed that th

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Kamiran Rasheed, Suad, and Al-Hadidy A.I. "Mechanical and Durability Properties of HMA Containing PG76-16 and Sustainable Sulfur Waste as Filler." Academic Journal of Nawroz University 12, no. 4 (2023): 709–19. http://dx.doi.org/10.25007/ajnu.v12n4a1458.

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In Iraq, sulfur waste (SW) accumulates, posing a costly disposal and gas emission problem. Using SW as a mineral filler is a cost-effective method for reducing the quantity of common filler (calcium carbonate; CaCO3) and hazardous gas emissions. SW was utilized to replace an asphalt binder component in hot asphalt mixes gradually. This study investigates the use of SW as a mineral filler in the construction of sustainable pavements. Three SWAC mixes with PG76-16 asphalt binder were created and compared to the CaCO3-asphalt concrete (AC) mix used as the study's reference. SWAC refers to 4 perce

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Hoskinson, Alan R., Wilson T. Rawlins, Kristin L. Galbally-Kinney, Emily Gong та Jeffrey Hopwood. "Production and loss of O₂(¹Δ _g ) at atmospheric pressure using microwave-driven microplasmas". Journal of Physics D: Applied Physics 55, № 12 (2021): 125208. http://dx.doi.org/10.1088/1361-6463/ac4364.

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Abstract We have used arrays of microwave-generated microplasmas operating at atmospheric pressure to generate high concentrations of singlet molecular oxygen, O2(1Δ g ), which is of interest for biomedical applications. The discharge is sustained by a pair of microstrip-based microwave resonator arrays which force helium/oxygen gas mixtures through a narrow plasma channel. We have demonstrated the efficacy of both NO and less-hazardous N2O additives for suppression of ozone and associated enhancement of the O2(1Δ g ) yield. Quenching of O2(1Δ g ) by ozone is sufficiently suppressed such that

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Rasheed, Suad Kamiran, and Al-hadidy Ai. "Tensile Strength And Moisture Sensitivity of Sulfur Waste in Asphalt Mixtures As An Eco-friendly Filler." Journal of duhok university 25, no. 1 (2022): 164–73. http://dx.doi.org/10.26682/sjuod.2022.25.1.18.

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Sulfur waste (SW) materials continue to accumulate in Iraq, posing an expensive disposal and gas emission problem. Utilizing SW as a mineral filler is a cost-effective way to reduce the amount of common filler (calcium carbonate; CaCO3) used and hazardous gas emissions. SW was used to gradually replace a component of the asphalt binder in hot asphalt mixes. The purpose of this research is to explore the use of SW as a mineral filler in the construction of sustainable pavements. Three sulfur waste asphalt concrete (SWAC) mixes with asphalt binder penetration grades of 40–50 were created and com

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Комаров, Александр Андреевич, Владимир Леонидович Малкин, Владимир Александрович Угорелов, and Руслан Андреевич Загуменников. "Determination of flood parameters during the fire hazardous liquid spreading after the accident." Pozharnaia bezopasnost`, no. 3(100) (September 28, 2020): 36–43. http://dx.doi.org/10.37657/vniipo.pb.2020.63.83.004.

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Пролив пожароопасных жидкостей на свободную поверхность является одним из наиболее опасных сценариев аварии, приводящей к пожару. Для решения задачи по оценке параметров такого пролива было использовано численное интегрирование уравнений сохранения методом Годунова, на примере растекания пожароопасной жидкости по бетонному основанию. Возможности метода численного интегрирования позволяют спрогнозировать размеры пролива на текущий момент времени. Результаты расчета показали, что пролив объемом 245 м в течение 4-5 мин достигает равновесного состояния, после чего площадь зеркала пролива практичес

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Payne, Madeleine E., Heather F. Chapman, Janet Cumming, and Frederic D. L. Leusch. "In vitro cytotoxicity assessment of a hydraulic fracturing fluid." Environmental Chemistry 12, no. 3 (2015): 286. http://dx.doi.org/10.1071/en14010.

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Environmental context Hydraulic fracturing fluids, used in large volumes by the coal seam gas mining industry, are potentially present in the environment either in underground formations or in mine wastewater (produced water). Previous studies of the human health and environmental effects of this practice have been limited because they use only desktop methods and have not considered combined mixture toxicity. We use a novel in vitro method for toxicity assessment, and describe the toxicity of a hydraulic fracturing fluid on a human gastrointestinal cell line. Abstract Hydraulic fracturing flu

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Praveenchandar, J., D. Vetrithangam, S. Kaliappan, et al. "IoT-Based Harmful Toxic Gases Monitoring and Fault Detection on the Sensor Dataset Using Deep Learning Techniques." Scientific Programming 2022 (August 8, 2022): 1–11. http://dx.doi.org/10.1155/2022/7516328.

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One of the main reasons for accidents among workers is harmful gas leakage. Many people die in chemical industries and their surrounding areas. The present invention is responsible for monitoring and controlling hazardous toxic gases like nitrogen dioxide (NO2), carbon monoxide, ozone (O3), sulfur dioxide (SO2), LPG, hydrocarbon gases, silicones, hydrocarbons, alcohol, CH4, hexane, benzine, as well as environmental conditions, such as temperature and relative humidity to prevent industrial accidents. The Arduino UNO R3 board is used as the central microcontroller. It is connected to the Cloud

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Vasyl, Chornyi, Kushniruk Vasyl, and Georgiyants Victoriya. "Design and implementation of green chemistry approaches into pharmaceutical analysys of benzydamine dosage formes." ScienceRise: Pharmaceutical Science, no. 5(21) (October 31, 2019): 12–17. https://doi.org/10.15587/2519-4852.2019.182024.

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<strong>Aim. </strong>The development of the pharmaceutical industry of Ukraine and the world has led to an increase in the need for the use of hazardous and toxic chemicals and solvents, which affects the safety of the environment and directly employees of pharmaceutical companies. Therefore, one of the solutions to this problem is the implementation of “green chemistry” approaches in pharmaceutical quality control laboratories. <strong>Materials and methods. </strong>Chromatographic separation methods are used for the qualitative and quantitative analysis of raw materia

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LeBouf, Ryan F., Brie Hawley, and Kristin J. Cummings. "Potential Hazards Not Communicated in Safety Data Sheets of Flavoring Formulations, Including Diacetyl and 2,3-Pentanedione." Annals of Work Exposures and Health 63, no. 1 (2018): 124–30. http://dx.doi.org/10.1093/annweh/wxy093.

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Abstract Objectives Workers using flavoring formulations containing diacetyl and 2,3-pentanedione may be at risk of inhalational exposure, as these volatile hazardous chemicals are emitted from the bulk material, especially at elevated temperatures. However, flavoring formulations that contain diacetyl and 2,3-pentanedione might not list these ingredients because they are generally recognized as safe to ingest, may be part of a proprietary mixture deemed a trade secret, or may not be required to be listed if they are present at &lt;1% composition. The objective of this study was to investi

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Wang, Qingfang, Qichao Wang, Zhangfan Yang, Xu Wu, and Yan Peng. "Quantitative Analysis of Industrial Solid Waste Based on Terahertz Spectroscopy." Photonics 9, no. 3 (2022): 184. http://dx.doi.org/10.3390/photonics9030184.

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Industrial solid waste refers to the solid waste that is produced in industrial production activities. Without correct treatment and let-off, industrial solid waste may cause environmental pollution due to a variety of pollutants and toxic substances that are contained in it. Conventional detection methods for identifying harmful substances are high performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS), which are complicated, time-consuming, and highly demanding for the testing environment. Here, we propose a method for the quantitative analysis of harmful c

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Adam, T., S. Mitschke, and RR Baker. "Investigation of Tobacco Pyrolysis Gases and Puff-by-puff Resolved Cigarette Smoke by Single Photon Ionisation (SPI) - Time-of-flight Mass Spectrometry (TOFMS)." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 23, no. 4 (2009): 203–26. http://dx.doi.org/10.2478/cttr-2013-0860.

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AbstractThe work presented deals with the application of Single Photon Ionisation- Time-of-Flight Mass Spectrometry (SPI-TOFMS) for the investigation of tobacco smoke. SPI-TOFMS is a modern analytical technique, which enables the simultaneous analysis of a large number of organic species in complex gas mixtures in real time. The paper is a summary of a PhD thesis (1) and seven research articles, which were recently published in various scientific journals (2-8). Consequently, more detailed information on particular aspects can be found in there.The experimental part covers two different approa

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Pan, He, and Yang Zhang. "Study on the Mechanism of Sparks Generated Mechanical Friction." Journal of Engineering 2022 (July 8, 2022): 1–8. http://dx.doi.org/10.1155/2022/3478315.

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In the field of explosion protection, measures must be taken to prevent ignition sources due to mechanical friction and impact. One of the most dangerous sources of ignition in methane-air mixtures is sparks, which are easily induced by friction and impact from light metals. In general, sparks and hot surfaces are coexistent in the friction processes of metal contacts. The questions are whether sparks are a truly effective ignition source and whether the nature of materials plays a decisive role in the ignition ability of sparks. Therefore, this research focuses on the temperature of hot surfa

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Schenck, Frank J., Roberta Wagner, Michael K. Hennessy, and Joseph L. Okrasinski. "Screening of Organochlorine Pesticide and Polychlorinated Biphenyl Residues in Nonfatty Seafood Products by Tandem Solid-Phase Extraction Cleanup." Journal of AOAC INTERNATIONAL 77, no. 1 (1994): 102–6. http://dx.doi.org/10.1093/jaoac/77.1.102.

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Abstract A rapid multiresidue solid-phase extraction (SPE) technique for the isolation and subsequent gas chromatographic (GC) determination of organo-chlorine pesticide and polychlorinated biphenyl (PCB) residues in nonfatty fish, crabmeat, shrimp, and scallops is described. Samples are extracted with acetonitrile, and the extract is subjected to a cleanup using both C18 and Florisil SPE columns. The residues are determined by GC with electron capture detection. Because the injected extracts are free from matrix interferences, the amount of residue present is easily calculated. The average re

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Lisanov, M. V., A. A. Agapov, S. Kh Zainetdinov, S. I. Sumskoy, and A. S. Sofyin. "Updating Safety Guides in the Field of Accident Risk Assessment at the Production Facilities." Occupational Safety in Industry, no. 7 (July 2023): 85–92. http://dx.doi.org/10.24000/0409-2961-2023-7-85-92.

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Changes in the legislation in the field of industrial safety, as well as the experience of declaring industrial safety, developing safety cases for hazardous production facilities and other work related to risk analysis (assessment), required introduction of changes to the set of Rostechnadzor safety guidelines, most of which were developed in the period of 2013–2018. For this purpose, in agreement with Rosteсhnadzor, the specialists from the Group of Companies «Industrial Safety» (STC IS), STC «Industrial Safety» CJSC, ANO «Industrial Risk Research Agency», Fund of James Bruce) on a voluntary

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Tamošaitis, Gintautas, Danutė Vaičiukynienė, and Diana Bajare. "Investigation of the Properties of Low Water-to-Solid Ratio Vibro-Press-Formed Alkali-Activated Municipal Solid Waste Incineration Bottom-Ash Concrete." Materials 18, no. 13 (2025): 2926. https://doi.org/10.3390/ma18132926.

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This work focuses on the use of municipal waste incineration bottom ash (MSWI) for the development and production of products suitable for use as construction products. The generation of these ashes is increasing every year due to the incineration of municipal waste. There are currently three incineration plants operating in major cities in Lithuania. The non-hazardous bottom ash remaining from the incineration process is stored in dedicated sorting and aging sites until it is used as an inert form of aggregate for the installation of road foundations. However, it has been observed that these

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Kang, Ji Hwan, Young Doo Kim, Mi Eon Kim, Jinhong Lee та Sangil Lee. "Development of Primary Standard Gas Mixtures of Fourteen Volatile Organic Compounds in Hazardous Air Pollutants for Accurate Ambient Measurements in Korea (at 1 μmol/mol Levels)". Journal of Korean Society for Atmospheric Environment 34, № 2 (2018): 331–41. http://dx.doi.org/10.5572/kosae.2018.34.2.331.

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Blaginina, T. F., K. A. Semenova, and T. V. Bolotnova. "Impact of combined hazardous production factors on the development of comorbidal pathology in men working in a large industrial enterprise of Tyumen." Medical Science And Education Of Ural 22, no. 2 (2021): 120–23. http://dx.doi.org/10.36361/1814-8999-2021-22-2-120-123.

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Aim. To establish the strength and direction of the correlation between the comorbidity index depending on the combined impact of harmful production factors in men working at a large industrial enterprise in Tyumen. Materials and methods. A single-stage retrospective cohort study of working men in industrial conditions was carried out. Anamnestic, clinical, laboratory, biochemical, instrumental methods were used. Diagnoses were made on the basis of modern clinical guidelines criteria. The groups were comparable in age and formed depending on the number of harmful production factors. Study grou

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Gellrich, Florian, Mikkel Rykær Kraglund, Jens Oluf Jensen, and Henrik Stiesdal. "Engineering the Diaphragm to Minimize Gas Crossover in Alkaline Water Electrolysis." ECS Meeting Abstracts MA2024-02, no. 46 (2024): 3243. https://doi.org/10.1149/ma2024-02463243mtgabs.

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Hydrogen, a versatile energy carrier, is essential for the transition to renewable energy systems. Electrolytically produced hydrogen using renewable sources is a core technology for decarbonizing industries and societies. However, at the end of 2021, electrolysis contributed only about 4% of global hydrogen production [1]. Various electrolytic hydrogen production techniques exist, including Proton Exchange Membrane Electrolysis (PEMEC), Solid Oxide Electrolysis (SOEC), Anion Exchange Membrane Electrolysis (AEMEC), and liquid Alkaline Water Electrolysis (AEL) [2]. AEL is the most mature and sc

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Petruk, Roman, Yulia Bilichenko та Halyna Petruk. "Економічні розрахунки вибору методу утилізації пестицидів". Personality and environmental issues 1 (13 січня 2022): 42–46. http://dx.doi.org/10.31652/2786-6033-2022-1(1)-42-46.

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Goal: is a brief analysis of the main ways of dealing with unusable pesticides and pesticide-containing wastes and facilities and substantiation of technical and economic parameters of processes of neutralization of unusable pesticides and hazardous waste, as well as establishment of the most optimal methods and ways of their utilization. To establish the most optimal methods and ways of utilization of pesticides and pesticide-containing waste, a financial and economic assessment of pesticide exports from Ukraine to processing plants in Europe was made, the cost of burning pesticides at specia

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Mendes, Teófilo Paiva Guimarães, Ana Mafalda Ribeiro, Leizer Schnitman, and Idelfonso B. R. Nogueira. "A PLC-Embedded Implementation of a Modified Takagi–Sugeno–Kang-Based MPC to Control a Pressure Swing Adsorption Process." Processes 12, no. 8 (2024): 1738. http://dx.doi.org/10.3390/pr12081738.

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The paper presents a case study that applies a model predictive control (MPC) approach in a Micro850 programmable logic controller (PLC) to a laboratory pressure swing adsorption (PSA) process used for separating gas mixtures of CO2 and CH4. PLC is an industrial hardware characterized by its robustness to hazardous environments and limited computational capacities, which poses computational challenges for MPC implementation. This paper’s main contribution is the application of the modified Takagi–Sugeno–Kang-based MPC (MTSK-MPC) algorithm to this PSA unit, which provides features to investigat

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KORSHUNOV, Gennady I., Marat L. RUDAKOV, and Eugeniy I. KABANOV. "The Use of a Risk-Based Approach in Safety Issues of Coal Mines." Journal of Environmental Management and Tourism 9, no. 1 (2018): 181. http://dx.doi.org/10.14505//jemt.v9.1(25).23.

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The paper contains the analysis of the data on major industrial accidents and occupational injuries at the coal mine industry enterprises of Russia in order to reveal statistically significant correlations between the indicators impacting the accident rate and the employees’ death risk level. As the risk criteria, the values of the methane-air resultant mixtures (MARM) explosions frequency and the frequency of the staff exposure at MARM explosions in the mines (observed levels of personal risks) are taken. The Kolmogorov–Smirnov test and Kruskal–Wallis test are used to analyze the categorized

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Gennadii, Bersenev, and Viacheslav Kutuev. "Results of the research, development and production seminar for drilling and blasting." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal 5 (October 20, 2022): 108–17. http://dx.doi.org/10.21440/0536-1028-2022-5-108-117.

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The article provides the results of the research, development and production seminar on drilling and blasting in surface and underground mine workings and special blasting. The seminar was organized by the Ural Association of Shotfirers (Vzryvniki Urala) and held on 26 May, 2022 on the territory of the UMMC Museum Complex in the town of Verkhnyaya Pyshma, with the participation of the Institute of Mining UB RAS and the Ural Department of Rostekhnadzor. Reports on the following topics were presented: special blasting in explosive welding of metals and explosive demolition; experience with nonex

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Wang, Zhongcheng, Jie Zhu, Xiaoyu Liu, Jingjun Zhong, and Peng Liang. "Research on Control of Ammonia Fuel Leakage and Explosion Risks in Ship Engine Rooms." Fire 8, no. 7 (2025): 271. https://doi.org/10.3390/fire8070271.

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Due to the unique physicochemical properties of ammonia fuel, any leakages in the engine room will inevitably endanger ship safety. This study focuses on investigating the diffusion behavior of ammonia fuel within the engine room during ship navigation after leakage, aiming to identify hazardous points and implement measures, such as installing air-blowing and extraction devices, to mitigate the risks. To address potential leakage risks in ammonia-fueled ships, a simplified three-dimensional computational model was developed based on ship design drawings and field investigations. ANSYS Fluent

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Bakhonina, Elena I., and Ruslan R. Akhmadeev. "IMPROVING INDUSTRIAL SAFETY AT DELAYED COKING UNITS." Oil and Gas Business, no. 2 (April 17, 2024): 111–29. http://dx.doi.org/10.17122/ogbus-2024-2-111-129.

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A significant part of the installations of oil refineries are hazardous production facilities and are characterized by the presence of a large amount of flammable substances that can form explosive mixtures with air. One of such units is a delayed coking unit (DCO). The ultrasonic treatment plant plays an important role as part of a refinery, increasing the depth of oil refining (up to 98%) and contributing to the production (along with coke) of large volumes of light oil products and gas. The action of a number of dangerous factors can lead to depressurization/destruction of equipment, as wel

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Пономарева, Алина Александровна, Вера Евгеньевна Ситникова, and Константин Алексеевич Цой. "FORMATION OF SOL-GEL CATALYTIC COATINGS TO IMPROVE THE ECOLOGICAL PARAMETERS OF INTERMETALLIC POROUS BURNERS." Physical and Chemical Aspects of the Study of Clusters, Nanostructures and Nanomaterials, no. 13 (December 23, 2021): 760–68. http://dx.doi.org/10.26456/pcascnn/2021.13.760.

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Экологические параметры энергетического оборудования важны с точки зрения минимизации негативного воздействия на окружающую среду. Интерметаллидные инфракрасные пористые беспламенные горелки являются новым поколением горелочных устройств с улучшенными характеристиками. Газовые горелки относятся к наиболее эффективным устройствам прямого преобразования теплоты горения в энергию инфракрасного излучения. Несмотря на улучшенные по сравнению с традиционными горелками экологические характеристики инфракрасных пористых горелок, при работе они могут выделять нежелательные и опасные продукты горения га

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Bersenev, G. P., V. A. Kutuev, and A. S. Flyagin. "On scientific and practical workshop of Ural blasting specialists." Mining Industry Journal (Gornay Promishlennost), no. 4/2022 (August 25, 2022): 64–67. http://dx.doi.org/10.30686/1609-9192-2022-4-64-67.

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The article presents information on the outcomes of the scientific and practical workshop on drilling and blasting operations in surface and underground mines and special blasting operations, which was organized by the Blasting Specialists of the Urals Association and held on May 26, 2022, at the Museum Complex of the Urals Mining and Metallurgical Company in the City of Verkhnyaya Pyshma with participation of the Institute of Mining of the Urals Branch of the Russian Academy of Sciences and the Urals Department of the Federal Service for Environmental, Technological and Nuclear Supervision (R

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