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Artigos de revistas sobre o tema "Intensive crushing zone"

Autor: Grafiati

Publicado: 7 de junho de 2025

Última modificação: 2 de agosto de 2025

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1

Mavlyanov, A.A, T.E. Melnikova, and A. Milyutin. "Study of the impact of preliminary contour blasting on changing the zone of intensive rock crushing and reducing the level of watering of the massif in quarry." Multidisciplinary Journal of Science and Technology 5, no. 5 (2025): 376–79. https://doi.org/10.5281/zenodo.15382994.

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2

Rauf Husain, Jamal, Normansyah Normansyah, and Hasbi Bakri. "Structure Control of Iron Ore Education on Sebuku Island." Journal of Geology and Exploration 1, no. 1 (2022): 8–12. http://dx.doi.org/10.58227/jge.v1i1.2.

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Sebuku is occupied by serpentinized ultramafic (peridotite) rocks, gabbro, and chert which are ophiolite series formed in the oceanic crust, in the middle occupied by tuff and claystones. The purpose of this study was to determine the distribution pattern of iron ore deposits. The research area illustrates that the distribution of Fe elements with high levels of >48% is concentrated in the northeast-southwest part, while Fe elements with levels of <48% are concentrated in the southwest-northwest part of the west. Based on the topographic classification of the research area. The pattern o

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3

Сердалиев, Е. Т., Е. Е. Искаков, Б. А. Бахрамов та Ж. Г. Кенесов. "ОПТИМИЗАЦИЯ ДРОБЛЕНИЯ РУДЫ ПРИ РАЗРАБОТКЕ ЗОЛОТОРУДНЫХ МЕСТОРОЖДЕНИЙ ОТКРЫТЫМ СПОСОБОМ". Горный журнал Казахстана, № 12(236) (27 грудня 2024): 4–9. https://doi.org/10.48498/minmag.2024.236.12.002.

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В статье представлены результаты исследований по оптимизации работы системы «буровзрывные работы – дробильный комплекс». Приведены результаты анализа, выявляющие несоответствие между характеристиками взрывных работ и процессом дробления рудной массы на примере рудника «Пустынное». Установлено, что гранулометрический состав рудной массы затрудняет эффективное выполнение энергоемкого процесса дробления. Для повышения эффективности и оптимизации работы системы «буровзрывные работы – дробильный комплекс» предложено осуществлять районирование взрывных зон ме- сторождения на основе крепости и структ

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4

Katanov, Igor. "The Change of the Spatial Parameters of the Destruction of the Rock mass by Borehole Charge with Low-Density Tamping." E3S Web of Conferences 41 (2018): 01018. http://dx.doi.org/10.1051/e3sconf/20184101018.

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Explosive destruction of the rock formation is substantiated by several theories developed by well-known scientists. The improvement of quality of preparation of rock mass to excavation, by an excavator without an increase in the value of specific consumption of explosives is important in the present time. Traditionally, to increase the impact time of detonation products on the rock hard tamping was used. The problem is in the rational redistribution of the explosion energy due to the use of a borehole charge, and in particular, in the tamping of low-density, porous materials. The more intensi

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5

KONONENKO, M. M., O. YE KHOMENKO, S. M. HAPIEIEV, and R. M. TERESHCHUK. "NEW METHODOLOGY FOR CALCULATING PARAMETERS OF DRILLING AND BLASTING DURING THE CONSTRUCTION OF SUBWAY TUNNELS." Bridges and tunnels: Theory, Research, Practice, no. 27 (June 28, 2025): 35–45. https://doi.org/10.15802/bttrp2025/331605.

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Purpose. The aim of this work is to develop a new method for calculating the parameters of drilling and blasting (D&B) for the construction of subway tunnels, taking into account the hole size, the pressure of the blast products, the compressive strength of the rocks, their structural composition, fracturing and compaction under the action of rock pressure. Methodology. To develop a method for calculating the parameters of D&B during the construction of metro tunnels, we used the well-known laws of elasticity theory and the basic provisions of the quasi-static-wave hypothesis of the me

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6

Davydenko, O., R. Ahaiev, S. Shypunov, V. Yavorska, and M. Kononov. "Drilling mechanical hydrogen extraction at mining enterprises of Ukraine." Collection of Research Papers of the National Mining University 72 (March 2023): 249–58. http://dx.doi.org/10.33271/crpnmu/72.249.

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Purpose. Increasing the technical and economic indicators of well mechanohydraulic production due to the selection of the type and optimal formulation of drilling flushing fluids. In today's conditions, the lack of energy carriers requires involving a wider range of natural phenomena in energy production, looking for reliable ways and methods of increasing the efficiency of production. The use of energy also forces the introduction of resource-saving, environmentally safe geotechnologies in the energy-intensive technological processes of mining, transportation, crushing and beneficiation of mi

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7

Ibragimov, R. А., E. V. Korolev, and Sh Kh Zaripov. "Mechanisms of destruction of mineral particles and kinetic characteristics of ferromagnetic bodies in vortex layer devices." Zhilishchnoe Stroitel stvo, no. 1-2 (January 29, 2025): 81–90. https://doi.org/10.31659/0044-4472-2025-1-2-81-90.

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Identification of the mechanisms of destruction of particles of mineral components during processing in grinding devices is a scientific and practical problem, the solution of which has not yet been presented in its final form. In this paper, kinetic characteristics of ferromagnetic bodies moving under the influence of an electromagnetic field in a vortex layer apparatus are determined. A mathematical model of the motion of ferromagnetic bodies is implemented taking into account the radial inhomogeneity of the magnetic field induction. The dependence of the velocity of a ferromagnetic body on

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8

Lyashenko, Vasil, Oleh Khomenko, Tatiana Chekushina, Tamara Dudar, and Fedor Topolnij. "Evaluation of efficiency and environmental safety of leaching metals from ore: ways of development and prospects." Technology audit and production reserves 3, no. 3(59) (2021): 19–26. http://dx.doi.org/10.15587/2706-5448.2021.235288.

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The object of research is traditional mining technologies and technical means in combination with underground block leaching (UBL) of metals from rock ores with their preliminary crushing with explosives in installations mounted in mine workings. One of the most problematic areas is the difficulty of achieving a given crushing quality, as well as the required height of ore storage in the chamber for the subsequent leaching of metals and a loosening factor, taking into account the control of the energy of explosive destruction of rock ores. The study used: – data from literary sources and paten

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9

Khmelovskyi, V. S. "Research of mobile combined feed preparation unit." Naukovij žurnal «Tehnìka ta energetika» 11, no. 4 (2020): 33–39. http://dx.doi.org/10.31548/machenergy2020.04.033.

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The issues of implementation of the technological process of preparation of feed components for feeding for cattle are considered. The main factors of complete feeding are: a complete set of essential nutrients, timely and affordable and optimally coordinated in quantitative terms of their entry into the bodies of animals. The process of grinding feed components, to a large extent, depends on their physical and mechanical properties. One of the conditions for preparing the feed mixture is the minimum use of additional machines that perform the operations of grinding, mixing and distribution of

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10

Vasil, Lyashenko, Khomenko Oleh, Chekushina Tatiana, Dudar Tamara, and Topolnij Fedor. "Evaluation of efficiency and environmental safety of leaching metals from ore: ways of development and prospects." Technology audit and production reserves 3, no. 3(59) (2021): 19–26. https://doi.org/10.15587/2706-5448.2021.235288.

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<em>The object of research is traditional mining technologies and technical means in combination with underground block leaching (UBL) of metals from rock ores with their preliminary crushing with explosives in installations mounted in mine workings. One of the most problematic areas is the difficulty of achieving a given crushing quality, as well as the required height of ore storage in the chamber for the subsequent leaching of metals and a loosening factor, taking into account the control of the energy of explosive destruction of rock ores.</em> <em>The study used:</em> <em>– dat

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11

Nahaichuk, Vasyl. "Non-rigid road pavement made of local stone materials strengthened by slag alcaline binder." Dorogi i mosti 2021 (March 25, 2021): 102–16. http://dx.doi.org/10.36100/dorogimosti2021.23.102.

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Abstract Introduction.Road pavement is one of the most material-intensive and expensive elements of the road. The quality and durability of the road as a whole depend on the type of road construction material and the method of its application. Considering the significant needs of the road industry in construction materials, there is a need to find effective materials, the use of which allows building the road pavement that can resist the loadings of modern vehicles during the standard service life of pavement. In order to minimize the cost of construction and the negative impact on the environ

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12

Kononenko, M., O. Khomenko, and A. Kosenko. "New method for determining parameters of drilling and blasting for horizontal and inclined mine workings." Collection of Research Papers of the National Mining University 73 (June 2023): 16–32. http://dx.doi.org/10.33271/crpnmu/73.016.

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Purpose. Development of a new methodology for calculating the parameters of drilling and blasting (D&B) for horizontal and inclined mine workings, taking into account the pressure of the explosion products, the compressive strength of rocks, their structural structure, fracturing and compaction under the action of rock pressure. The methodology of research. Using the well-known laws of the theory of elasticity and the main provisions of the quasi-static-wave hypothesis of the mechanism of destruction of a solid medium by an explosion, a method has been developed for determining the D&B

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13

Kononenko, M., O. Khomenko, I. Sadovenko, and V. Sobolev. "Mathematical simulation of rock mass destruction zones by explosion." Collection of Research Papers of the National Mining University 72 (March 2023): 40–52. http://dx.doi.org/10.33271/crpnmu/72.040.

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Purpose. Improving the parameters of the rock mass destruction zones by a blasting, depending on the pressure of the explosion products in the charging cavity and the physical and mechanical properties of rocks by combining analytical and numerical mathematical simulation. The methodology of research. Using the theory of elasticity and the main provisions of the quasi-static wave hypothesis of the mechanism of destruction of a solid medium under the action of an explosion, an analytical simulation of the parameters of the formation of crush zones and grinding of a rock mass around the charging

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14

Klimov, Roman, and Myroslav Zaitsev. "TECHNOLOGICAL PARAMETERS FOR THE PRODUCTION OF SELIDITION-RESISTANT LIQUID MIXTURES." Collection of scholarly papers of Dniprovsk State Technical University (Technical Sciences) 1, no. 44 (2024): 140–45. http://dx.doi.org/10.31319/2519-2884.44.2024.18.

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All existing calculation methods involve finding the operating characteristics of dispersion, emulsification or homogenization. There are different ways to obtain emulsions and their further processing. Rotary-pulsation processing of dispersed systems in rotary-pulsation devices and impact-type pulsation dispersants is promising. The processes for preparing stable liquid water-oil fuels are one of the most energy-intensive processes in industry, which is associated with a significant overconsumption of heat and energy required for crushing the dispersed phase. To create dispersed systems, the

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15

Olejnik, E., Ł. Szymański, P. Kurtyka, et al. "Locally Reinforcement TiC-Fe Type Produced in Situ in Castings." Archives of Foundry Engineering 16, no. 3 (2016): 77–82. http://dx.doi.org/10.1515/afe-2016-0054.

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Abstract Refinement is one of the most energy consuming technological process, aimed at obtaining mineral raw materials of the proper grain size. Cast structural elements such as jaws or hammers in crushing machines operate under conditions of an intensive wear. The data indicate that 80 % of failures of machines and devices is caused by wearing of rubbing surfaces. This problem became the subject of several scientific and industrial investigations carried out in the whole world in order to produce materials ultra- wear resistant. Methods allowing to obtain wear resistant composite castings ar

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16

Iskakov, Ruslan, Alexandr Gulyarenko, Michał Bembenek, and Ruslan Kassym. "Technologies for efficient grinding of plant and animal waste: a review." EUREKA: Physics and Engineering, no. 2 (March 28, 2025): 54–77. https://doi.org/10.21303/2461-4262.2025.003733.

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The article considers the issue of technologies for grinding waste of plant and animal origin. A review of modern research works for the period 2020–2024 is conducted. The analysis of scientific works has revealed 10 most promising technologies that can grind waste of plant and animal origin. A comparative analysis of the research results and available information on each of the technologies for grinding waste of plant and animal origin is carried out, establishing the methods of destruction, the name of the crushing and grinding equipment and working bodies, advantages and disadvantages. It w

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17

Liu, Jinming, Boyu Ju, Wei Xie, et al. "Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete." Materials 14, no. 22 (2021): 6784. http://dx.doi.org/10.3390/ma14226784.

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Coral concrete has low cost and convenient materials, making it an excellent raw material for processing. However, its lower strength limits the application of coral concrete. Surface modification is expected to increase the properties of porous coral concrete. In this study, single and compound modification treatments were applied to the surface of a coral aggregate to improve its properties for promoting the mechanical performance of coral concrete. The results showed that the micro-aggregate effect and pozzolanic activity of granulated blast furnace slag (GBFS) and the permeability and poly

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18

Vdovin, Konstantin N., Nikolai A. Feoktistov, and Shamil M. Khabibullin. "Increasing the lifetime of cast high-manganese steel liners for the semi-autogenous grinding mill." Vestnik of Nosov Magnitogorsk State Technical University 17, no. 1 (2019): 26–31. http://dx.doi.org/10.18503/1995-2732-2019-17-1-26-31.

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At the processing plants of the mining industry, a significant part of the total processing costs (from 45 to 65%) is spent on crushing and grinding operations, including mill lining. The efficiency of grinding equipment in the conditions of abrasive impact of ore and a continuous operation requires periodic replacement of a worn-out lining. The costs for its purchase, delivery and installation during a year amount to tens of millions of rubles, and the equipment downtime associated with the replacement of the lining reduces the volume of finished products by hundreds of millions of rubles per

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19

Hlushkova, Diana, Volodymyr Volchuk, Vladislav Saenko, and Andrey Efimenko. "Fractal study of the mechanical properties of hardened hydraulic hammer parts." Bulletin of Kharkov National Automobile and Highway University, no. 100 (April 7, 2023): 48. http://dx.doi.org/10.30977/bul.2219-5548.2023.100.0.48.

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Abstract. Problem. Intensive abrasive wear of hydraulic hammer parts during operation leads to a decrease in their residual life. Since the existing methods of volumetric and surface strengthening of parts do not give a significant effect, the involvement of the ion-plasma chrome plating method has become relevant. Methodology. High-quality chrome coatings are obtained at a substrate temperature of at least 80–100°C. On the basis of experimental studies, the effect of ion-plasma chromium plating on the wear resistance and mechanical properties of hydraulic hammer parts was established, and str

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20

Liu, Tingting, Zi Wang, Xuyi Wang, Shenghao Yang, Wenxu Huang, and Luyang Ding. "Effects of Stress States and Joint Configurations on Dynamic Mechanical Properties of Rock Masses." Materials 18, no. 8 (2025): 1699. https://doi.org/10.3390/ma18081699.

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In complex geological environments, the discontinuous dynamic response behavior of jointed rock masses under the coupled effects of in situ stress and transient dynamic disturbances significantly exacerbates the risk of surrounding rock instability. This study establishes three-dimensional numerical models of various jointed rocks under uniaxial–biaxial–triaxial split Hopkinson pressure bar (SHPB) experimental systems through the coupling of the finite difference method (FDM) and discrete element method (DEM). The models adhere to the one-dimensional stress wave propagation assumption and sati

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21

Jina, Weerayut, Shigeru Nagasawa, Tetsuya Yamamoto, and Takaomi Nagumo. "Analysis of the folding behavior of a paperboard subjected to indentation of a deviated creasing rule using the finite element method." AIMS Materials Science 10, no. 2 (2023): 313–41. http://dx.doi.org/10.3934/matersci.2023017.

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<abstract> <p>This study reveals the crease deviation behavior through the developed forming simulation. A combination resistance model was expanded and applied to simulate the 180° folding process of a creased paperboard, using the shear-yield detaching resistance and the out-of-plane fluffing resistance which were based on the isotropic elastro-plastic model. When varying the misalignment of the creasing rule against the groove, the eccentricity of the crease bulging of a white-coated paperboard was compared through the experiment and simulation of the 180° folding process. Compa

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22

Kononenko, M., O. Khomenko, A. Kosenko, and V. Bash. "New method for determining the parameters of drilling and blasting for raising mine workings." Collection of Research Papers of the National Mining University, March 2024, 63–80. http://dx.doi.org/10.33271/crpnmu/76.063.

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Purpose. Development of new methods for calculating the parameters of drilling and blasting (D&B) for raising mine workings using the methods of blast-hole and well charges, taking into account the pressure of the explosion products, the compressive strength of rocks, their structural structure, fracturing and compaction under the influence of rock pressure. The methodology of research. To develop methods for calculating the parameters of D&B when carrying out raising with the help of blast-hole and well charges, we used the well-known laws of the theory of elasticity and the basic pro

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23

Попов, Ю. В., О. Е. Пустовит, and В. А. Терещенко. "Accessory chrome spinels of serpentinites of tectonic melange of the Dakhov uplift (Greater Caucasus)." Геология и геофизика Юга России, no. 2() (June 27, 2020). http://dx.doi.org/10.46698/vnc.2020.21.55.003.

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Особенности морфологии и состава хромшпинелидов имеют важное значение для решения ряда геологических задач: от реконструкции состава субстрата родоначальных расплавов и физико-химических условий их эволюции, установления приуроченности магматических комплексов к геодинамическим обстановкам до оценки минерагенического потенциала ультрабазитовых массивов.Цель работы– изучение акцессорных хромшпинелидов из серпентинитов тектонического меланжа на северном флангеДаховского кристаллического выступа, входящего в состав тектоническойзоны Передового хребта Большого Кавказа, выделение сохранивших исходн

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24

Kuzmych, A. Ya, M. M. Aneliak, and V. F. Kuzmenko. "Research of the corn-cob mix composition during harvesting with an axial-rotary combine harvester." Mechanics and automatics of agroindustrial production, 2024, 95–104. https://doi.org/10.37204/2786-7765-2024-2-10.

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Purpose. To investigate the composition of the technological material, its technological load on the working parts of the combine, and to substantiate ways to increase the volume of corn cob harvesting by an axial-rotor combine.. Methods. Methods of scientific planning of experiments were used to determine the composition of the technological material and its technological load on the working bodies of the combine. Statistical processing of results were performed using a personal computer and mathematical software products using the following computer software packages: Microsoft Excel and Sta

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25

Lyashenko, V., B. Andreev, V. Stus, and T. Oliіnyk. "INCREASING THE EFFICIENCY AND ENVIRONMENTAL SAFETY OF COMBINED GEOTECHNOLOGIES FOR LEACHING METALS FROM AND OFF-BALANCE ORES." Norwegian Journal of development of the International Science 144 (November 12, 2024). https://doi.org/10.5281/zenodo.14169157.

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<strong>Abstract</strong> <strong>Goal</strong><strong>.</strong> Increasing the efficiency and environmental safety of geotechnologies of solid ore extraction with their preliminary grinding with explosives according to traditional technologies and leaching of metals from substandard ores in installations installed in mining workings of the operational block. This will ensure the protection and rational use of the subsoil, increasing the economic efficiency and environmental safety of the mining of poor, substandard and out-of-balance ores in terms of metal content. <strong>Method.</strong> T

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26

Lyashenko, V., Y. Kyselov, D. Sopov, and I. Lisovyi. "INCREASING THE EFFICIENCY AND ENVIRONMENTAL SAFETY OF SUBSOIL DEVELOPMENT BY COMBINED GEOTECHNOLOGIES WITH LEACHING OF METALS FROM ORE." Danish scientific journal 92 (January 24, 2025). https://doi.org/10.5281/zenodo.14770653.

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<strong>Abstract</strong> <strong>Topicality.</strong> One of the problems of the mining industry is the high cost of mining and ore processing. On the other hand, the ores that are mined belong to the poor class in terms of the content of the useful component in it. It is possible to increase the efficiency and environmental safety of metal extraction due to the implementation of combined geotechnology. It includes a traditional chamber development system with solidifying liner combined with underground block leaching (BBC) of metals from rock ores. <strong>Goal.</strong> Increasing the effic

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