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361
ASPECT VERBAL, PSYCHOGÉNÈSE ET ENSEIGNEMENT DU TEMPS EN FRANÇAIS
Published 2019-12-01“…However, the psychogenesis of verbal tenses shows us that aspect is the linguistic mirror of the time of the action and the linguistic crucible of the time representation of an epoch. Only the constructivist approach, which joins Jean Piaget’s genetic psychology and Gustave Guillaume’s psychosystems of language, allows a new proposal on the teaching of tense and conjugation in French, one that responds to the child’s development and to the way he/she constructs his/her own mother tongue. …”
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362
Removal of Low-Content Impurities from Pure Al by Supergravity Combined with Semi-Solid Method
Published 2023-11-01“…The Fe-rich phase in the Al melt was completely filtered to the lower part of the crucible in the supergravity field, completing the further purification of the pure Al.…”
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363
Laser Floating Zone Growth: Overview, Singular Materials, Broad Applications, and Future Perspectives
Published 2020-12-01“…The Laser Floating Zone (LFZ) technique, also known as Laser-Heated Pedestal Growth (LHPG), has been developed throughout the last several decades as a simple, fast, and crucible-free method for growing high-crystalline-quality materials, particularly when compared to the more conventional Verneuil, Bridgman–Stockbarger, and Czochralski methods. …”
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364
Pyrometallurgical Scheme Intended to Process Arsenic-Containing Concentrates with Recovery of Precious Metals
Published 2023-03-01“…If the cyclone smelting dust is involved, the recovery rate of gold and silver can be increased to 97–99% and 94–95%, respectively. As a result of crucible smelting, the degree of recovery of gold in matte was 95.4%, with its content in slag being 3.6 g/t. …”
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365
Corrosion Behavior of TC4 Titanium Alloys in Al–Li Alloy Melt
Published 2021-05-01“…When the holding time reached 3 h in a TC4 crucible, the content of Ti dissolved in the Al–2Li alloy melt was 0.105 wt%.…”
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366
Droplet Combustion and Thermogravimetric Analysis of Pure Coconut Oil, Clove Oil, and Their Mixture
Published 2022-07-01“…Thermogravimetric analysis with alumina crucible was prepared to investigate the thermal behavior of fuel. …”
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367
Cl-Doped CdTe Crystal Growth for Medical Imaging Applications
Published 2022-09-01“…CdTe:Cl doped single crystals were grown under conditions of tellurium excess by using an accelerated crucible rotation technique, modified vertical Bridgman (ACRT-MVB) method. …”
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368
Determination of Hf, Ti and Zr in Zirconium-Titanium Placer by Inductively Coupled Plasma-Atomic Emission Spectrometry
Published 2013-11-01“…The method of melting the sample in a corundum crucible increased the number of samples and reduced the cost, which is beneficial for the fast determination of insoluble Zr-Ti placer samples.…”
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369
Determination of the Partial Contributions to the Electrical Conductivity of TiO2-SiO2-Al2O3-MgO-CaO Slags: Role of the Experimental Processing Conditions
Published 2022“…To avoid the corrosion of crucible materials by this slag at ultra high temperatures, the pendant droplet technique was used inside a modified floating zone furnace. …”
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370
Controlled formation of gold nanoparticles with tunable plasmonic properties in tellurite glass
Published 2023-12-01“…Then, we demonstrate precise control of the size and concentration of gold NPs in tellurite glass by developing new approaches to both steps of the striking technique: a controlled gold crucible corrosion technique to incorporate gold ions in tellurite glass and a glass powder reheating technique to subsequently transform the gold ions to gold NPs. …”
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371
Development of Zn50 Brazing Alloy for Joining Mild Steel to Mild Steel (SAE1018)
Published 2014-09-01“…The brazing alloys were produced by gravity technique and melted using silicon carbide graphite crucible. The quality of the brazing alloys was analyzed by optical microscopy (OM), atomic absorption spectroscopy (AAS) and fourier transform infrared spectroscopy (FT-IR). …”
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372
Purification of LiF Powder by Zone Melting Method
Published 2017-08-01“…The mechanism of work was moving furnace on a graphic crucible with full of LiF powder by 20 mm/h-1. This procedure was followed in a vacuum for 7, 9 and 14 times. …”
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373
Effects of Cu and Ag Elements on Corrosion Resistance of Dual-Phase Fe-Based Medium-Entropy Alloys
Published 2023-04-01“…Dual-phase Fe-based medium-entropy alloys were fabricated via water-cooled copper crucible magnetic levitation melting and copper mold suction casting. …”
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374
Evolution behaviour of inclusions via oxide metallurgy of NM450 ultrahigh-strength steel
Published 2021-01-01“…The addition of Ce was prone to adhesion to the crucible wall, which may have an adverse effect on actual production. …”
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375
Management of change and its reflection in the job performance of employees - research in the Ministry of Labor and Social Affairs
Published 2023-11-01“… The institution is part of an interactive system that is represented in the environment surrounding change in all fields, which is often unexpected, so it takes place in a crucible that brings together its human, technical and environmental components. …”
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376
Improvement of energy efficiency of ore-thermal furnaces in smelting of alumosilicic raw materials
Published 2023-07-01“…The experiments were carried out on a high-temperature unit with a heater placed in a carbon-graphite crucible. Based on the obtained kinetic dependences of nonisothermal heating of enriched kyanite concentrates in plasma heating conditions we obtained a number of kinetic anamorphoses of the linear form which point to the possibility of describing the reaction rate using the modified Kolmogorov – Erofeev equation for given heating conditions and within a narrow temperature range. …”
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377
Investigation of the presence of metallic phases in brazilian tin-slags
Published 2023-05-01“…It was verified that metallic prills were mostly precipitated in the bottom of the crucible above 1673K. However, at 1573K, a mixture of metallic and oxidized phases was obtained, indicating that low working temperatures lead to losses of Sn in the final slag as metallic inclusions. …”
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378
Investigation of the smelting reduction mechanism and of iron extraction from high-iron red mud
Published 2020-01-01“…The maximum degree of iron extraction was 92.8% with anthracite as reductant and 88.8% without anthracite smelting at 1500 °C for 30 min in a graphite crucible. XRD was conducted to analyze the mineral phase of the samples and slags. …”
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379
Microstructure and mechanical properties evolution during thermomechanical processing of a Ti–Nb–Zr–Ta–Sn–Fe alloy
Published 2022-07-01“…In this study, a Ti–30Nb–12Zr–5Ta–2Sn-1.25Fe (wt%) alloy was produced by melting in a cold crucible induction in levitation furnace, deformed by cold rolling, with a total deformation degree (thickness reduction) of 50%, in five equal steps, and solution treated at 850 °C, with progressive treatment durations, from 5min to 20min, in 5min increments. …”
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380
Major element analysis of geological samples with wavelength Dispersive X-ray Fluorescence (WDXRF) spectrometry using glass disks and pressed powder pellets
Published 2023-12-01“…Whereas the widely adopted devices for glass disk preparation were using a high frequency heating furnace and Pt dish for fusion as well as for casting, an electric furnace and Pt crucible were used in this experiment and the molten mixture was finally poured into Pt mold. …”
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