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refractory material shows the characteristic phenomena like introductions

  • Modelling of high-chromia refractory spalling in

    2008-12-1 · One of the most severe refractory degradation mechanisms is spalling, which can occur by either volume-expansion phenomena (compressive stresses) or by volume-shrinkage phenomena (tensile stresses). A volume-shrinkage model is benchmarked to high-chromia refractory material properties and performance under gasifier operating conditions.

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  • Transient refractory material dissolution by a ...

    2014-12-1 · The aim of the experiment (named LIVECERAM) was to use the same facility and simulant materials, but for the analysis of refractory material dissolution by a melt in which the temperature stays always below the melting temperature of the refractory lining material. The refractory material was pure KNO 3 (melting temperature 336 °C) and the melt had initially the azeotropic composition (i.e.: C50 …

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  • Damage Detection of Refractory Based on Principle ...

    2019-7-30 · AE is dened as phenomena whereby transient elastic waves are generated by the rapid release of energy from localizedsourceswithinamaterial(orstructure).e AE, whichrepresentsthegenerationoftransientultrasonicwaves duetodamagedevelopmentwithinthematerialunderload, …

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  • The influence of flow asymmetry on refractory erosion

    2019-9-1 · In addition, the chemical properties of the slag and steel, atmosphere and temperature of process are factors that affect refractory linings. Hence the refractory structure zoning is important and the choice is made taking into account the physicochemical characteristics of the refractory and the environment to which it is exposed.

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  • Analysis and Prediction of Corrosion of Refractory ...

    2018-12-18 · Corrosion Reaction of K 2 SO 4 and the Five Components of Refractory Materials. It can be seen from Figure 2 that the tendency of Gibbs free energy change of the five components of refractory materials reacted with K 2 SO 4 in the range of 600 to 1200 °C is consistent with the one of reactions between the five components of refractory materials and K 2 CO 3.

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  • Dissolution of refractories for gasification process of ...

    2012-3-1 · Although the slag may cause dissolution in the refractory (due to it penetrates from the refractory hot face through the porosity, favoring phases dissolution and promotes the formation of low melting point phases in solid solutions) and it affects in a negative way on its service life due to the weakening in the microstructure ; sometimes may also be useful in the process since if the slag does not react with the refractory material…

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  • Experimental and numerical study of the

    2007-1-1 · Micrographs of an industrial refractory and of a simplified model material: (a) industrial refractory and (b) simplified model material. The glass frit is mixed with additives (water, methocel, peg300, acetic acid) which improve the plasticity and lubrication of the mixture. 4 The good content of alumina balls is then added to this mixture.

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  • Correlation of Thermo-Elastic Material and Corrosion ...

    2020-3-9 · to high temperatures, the refractory linings are also often exposed to highly corrosive media. The di erent chemical compositions of material and corrosion medium leads to a gradient of the chemical potential. This makes interactions between these two partners unavoidable. The kinetics of the reactions is favored at high temperatures.

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  • 10.1016/j.jmatprotec.2004.04.365 | DeepDyve

    1 Introduction There is a trend to increase the use of unshaped refractory castables in various industries like steel-making, cement production, energy production and waste incineration. In several applications, they are more economical and easier to use than shaped refractories and they can exhibit excellent mechanical properties.

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  • Damage Detection of Refractory Based on Principle ...

    2019-7-30 · Compute the features and its characteristic vec-tor. Set 1, 2,..., to be eigenvalues of . Meanwhile, ... Figure shows the microstructure of such a refractory without damage. e magnesia aggregates are ... AE is dened as phenomena whereby transient elastic

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  • Refractory disease | Article about Refractory disease

    disease, impairment of the normal state or functioning of the body as a whole or of any of its parts. Some diseases are acute, producing severe symptoms that terminate after a short time, e.g., pneumonia; others are chronic disorders, e.g., arthritis, that last a long time; and still others return periodically and are termed recurrent, e.g., malaria.

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  • New Experimental Method for Consolidation some

    2021-6-29 · deformation characteristic for very high pressure and to obtain compacts of refractory and graphitc based powders near theoretical density with improved physical-mechanical properties. REFERENCES 1. Jim D. Mote and Joan J. Fitzpatric. Proceedings of the conference on Emergent Process Method for High - Technology Ceramics, 1982, p. 695-71 0.

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  • 10.1016/j.jmatprotec.2004.04.365 | DeepDyve

    1 Introduction There is a trend to increase the use of unshaped refractory castables in various industries like steel-making, cement production, energy production and waste incineration. In several applications, they are more economical and easier to use than shaped refractories and they can exhibit excellent mechanical properties.

    Get Price
  • Analysis and Prediction of Corrosion of Refractory ...

    2018-12-18 · This also shows that the reaction tendency of the corrosion reaction is the only one that can be obtained by calculating the Gibbs free energy. The estimation of difficulty of the corrosion reaction needs to be obtained by considering the products of Table 1 , Table 2 and Table 3 regarding the corrosion of the refractory component by the ...

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  • Combustion joining of refractory materials:

    2017-4-6 · Here, we would like to discuss about the stability of the oxides calculated by thermodynamics. Fig. 6(a) shows the Ellingham diagram for NiO, MoO2 and WO2 [7]. MoO2 and WO2 are more advantageous in energy than MoO3 and WO3 when they are on their metal surfaces in a vacuum as shown in Fig. 6(b) and (c).

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  • Development and exploration of refractory high

    Simultaneously, carbon from the composite material is dissolved into the liquid-metal layer, leading to the formation of a refractory phase (TiC) with a much higher viscosity than the metal. Because the characteristic squeezing rate is much higher than the characteristic diffusion time, the thickness of the final joining layer is essentially ...

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  • Size effect predictions by fracture models for a ...

    2018-10-1 · Open literature publications, in the period from 2010 to the end of January 2018, on refractory high entropy alloys (RHEAs) and refractory complex concentrated alloys (RCCAs) are reviewed. While RHEAs, by original definition, are alloys consisting of five or more principal elements with the concentration of each of these elements between 5 and 35 at.%, RCCAs can contain three or more …

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  • The Epileptor Model: A Systematic Mathematical

    2019-5-10 · thermal shock resistance. In practice, however, the material fails due to thermal fatigue after a limited number of cycles. To predict this failure behaviour, it is generally not possible to use linear elastic fracture mechanics due to the fact that the coarse grained, porous material shows a dissipative mechanical behaviour.

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  • New Experimental Method for Consolidation some

    2021-6-29 · deformation characteristic for very high pressure and to obtain compacts of refractory and graphitc based powders near theoretical density with improved physical-mechanical properties. REFERENCES 1. Jim D. Mote and Joan J. Fitzpatric. Proceedings of the conference on Emergent Process Method for High - Technology Ceramics, 1982, p. 695-71 0.

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  • Development and exploration of refractory high

    2018-10-1 · Open literature publications, in the period from 2010 to the end of January 2018, on refractory high entropy alloys (RHEAs) and refractory complex concentrated alloys (RCCAs) are reviewed. While RHEAs, by original definition, are alloys consisting of five or more principal elements with the concentration of each of these elements between 5 and 35 at.%, RCCAs can contain three or more …

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  • Damage Detection of Refractory Based on Principle ...

    The industrial refractory tested in the study is composed of magnesia aggregates, carbon binder (phenolic resin and/or pitch), and other components. Figure 1 shows the microstructure of such a refractory without damage. The magnesia aggregates are formed by sintering of crystallites with weak interfaces.

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  • (PDF) Int. Journal of Refractory Metals and Hard

    ELSEVIER Volume 28, issue 5, September 2010 ISSN 02E3-43S8 International Journal of REFRACTORY METALS & HARD MATERIALS Editor-in-Chief Hugo M. Ortner This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the ...

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  • Development and exploration of refractory high

    2018-6-8 · Development and exploration of refractory high entropy alloys—A review - Volume 33 Issue 19 ... Lin, Chen, Lin and Yeh 14, Reference Lilensten, Couzinie, Perriere, Hocini, Keller, Dirras and Guillot 25 The single phase material shows both yield stress and maximum true stress close to 1000 MPa, as well as tensile plastic strain far beyond 10% ...

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  • Karsten Albe | HKHLR - HPC Hessen

    2021-5-16 · Ab-Initio Thermodynamics of Refractory Mo-Si-Ti Phases at High Temperatures Refractory metal silicide systems like Mo-Si-Ti are expected to be ideal substrates in composite materials for high ... Engineering Sciences ... The project focused on interface phenomena in battery materials and exchange spring magnets but also studied the ...

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  • Refractory period in network models of excitable

    2017-8-2 · Networks of excitable nodes have recently attracted much attention particularly in regards to neuronal dynamics, where criticality has been argued to be a fundamental property. Refractory …

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  • Structural and optical characterization of Cr2O3 ...

    2021-4-26 · The bismuth superhydrophobic surface (BiSHS) was fabricated on aluminum (Al) substrate by immersion in BiCl3 aqueous solution following annealing treatment. The surface morphology of the sample shows cauliflower and landmass like structures by scanning electron microscope. The size of NPs in the microscaled landmass texture is from 200 to 500 nm. The BiSHS contains the Bi/Bi2O3 layer on …

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  • Fabrication of stable superhydrophobic bismuth

    Equilibrium condensation of solar gas is often invoked to explain the abundance of refractory elements in planets and meteorites. This is partly motivated, by the observation that the depletions in both the least and most refractory rare earth elements (REEs) in meteoritic group II calcium-aluminum–rich inclusions (CAIs) can be reproduced by thermodynamic models of solar nebula condensation ...

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  • Development and exploration of refractory high

    2018-6-8 · Development and exploration of refractory high entropy alloys—A review - Volume 33 Issue 19 ... Lin, Chen, Lin and Yeh 14, Reference Lilensten, Couzinie, Perriere, Hocini, Keller, Dirras and Guillot 25 The single phase material shows both yield stress and maximum true stress close to 1000 MPa, as well as tensile plastic strain far beyond 10% ...

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  • Damage Detection of Refractory Based on Principle ...

    The industrial refractory tested in the study is composed of magnesia aggregates, carbon binder (phenolic resin and/or pitch), and other components. Figure 1 shows the microstructure of such a refractory without damage. The magnesia aggregates are formed by sintering of crystallites with weak interfaces.

    Get Price
  • Optimization of Properties for Alumina-Spinel

    2021-6-1 · Aiming at optimizing properties of alumina-spinel refractory castables, coarse corundum particles were replaced partially with the particles of a novel porous multi-component CMA (CaO-MgO-Al 2 O 3) aggregate in the same size.Properties including the bulk density, apparent porosity, strength, slag corrosion resistance, thermal shock resistance and thermal fatigue resistance of alumina-spinel ...

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  • (PDF) Int. Journal of Refractory Metals and Hard

    ELSEVIER Volume 28, issue 5, September 2010 ISSN 02E3-43S8 International Journal of REFRACTORY METALS & HARD MATERIALS Editor-in-Chief Hugo M. Ortner This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the ...

    Get Price
  • Refractory period in network models of excitable

    2017-8-2 · Networks of excitable nodes have recently attracted much attention particularly in regards to neuronal dynamics, where criticality has been argued to be a fundamental property. Refractory …

    Get Price
  • US4306030A - Carbon-containing refractory - Google

    The invention relates to precluding the shortcomings intrinsic to the conventional unburned carbon-containing refractory bricks, i.e., oxidization under high temperature conditions and the incidental decarbonization, the phenomenon of exfoliation and detachment of the fragile layers, and more particularly to obtaining thereby unburned carbon-containing refractory bricks having the high ...

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  • Wetting and corrosion studies on SS304 material

    2021-2-5 · Literature survey shows that the Hydrophobic surfaces has better corrosion resistance characteristic. Here In this work, Hydrophobic surface will be fabricated on SS304 in the shape of micropatterns. Micro patterns like grooves and are made on the surface of SS304 material with the wire electric discharging machining process with varying ...

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  • Introduction to Statistics - SAGE Pub

    2011-3-3 · Introduction to CHAPTER1 Statistics LEARNING OBJECTIVES After reading this chapter, you should be able to: 1 Distinguish between descriptive and inferential statistics. 2 Explain how samples and populations, as well as a sample statistic and population parameter, differ.

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  • Influence of Annealing on Microstructure and

    2018-1-22 · A novel refractory CoCrMoNbTi0.4 high-entropy alloy (HEA) was prepared via vacuum arc melting. After annealing treatment at different temperatures, the microstructure evolution, phase stability, and mechanical properties of the alloy were investigated. The alloy was composed of two primary body-centered cubic structures (BCC1 and BCC2) and a small amount of (Co, Cr)2Nb-type Laves phase …

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  • A Journey Towards Improving Tuyere Life | SpringerLink

    2021-3-12 · Tuyere is one of the critical components of blast furnace. The function of tuyere is to supply hot air and fuels like pulverized coal inside the furnace. In doing so, tuyeres get exposed to severe thermal conditions, hot metal contact and abrasive environment. Tuyere failure contributes to major part of mechanical breakdown in the furnace leading to immense production loss. This work focuses ...

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  • Optimization of Properties for Alumina-Spinel

    2021-6-1 · Aiming at optimizing properties of alumina-spinel refractory castables, coarse corundum particles were replaced partially with the particles of a novel porous multi-component CMA (CaO-MgO-Al 2 O 3) aggregate in the same size.Properties including the bulk density, apparent porosity, strength, slag corrosion resistance, thermal shock resistance and thermal fatigue resistance of alumina-spinel ...

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  • OPERATIONS STRATEGIES FOR VERTICAL SHAFT LIME

    2012-3-12 · chemical products like lime, the vertical shaft kilns offers a good investment options. This is because of the ... This kiln can be described as an upright heavy steel cylinder lined with refractory material. ... Figure 1 shows a schematic diagram of a shaft kiln. The challenge of operating a shaft kiln to

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  • A unique magnetic material for protective clothes

    Figure 4E shows refractive index sensing using a Fano resonance Si metasurface. Moitra et al. demonstrated high-efficiency perfect reflector using Si material platform by utilizing the Mie resonance. The array of Si nanodisks shows 98% reflectivity in 200 nm bandwidth at the near-IR wavelength.

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  • Optical Absorption and Thermal Effects of Plasmonic ...

    Figure (b) shows that even a single pulse of circularly polarized laser light can reverse the magnetization of the illuminated area. It was later shown that heating of the magnetic material due to the fs laser pulse illumination plays a crucial role in the magnetization reversal of GdFeCo [4,5].

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  • Material platforms for optical metasurfaces

    2019-11-26 · material. Damping behavior may originate from multiple microstructural phenomena like grain boundary sliding, liquid phase formation, phase transition, diffusion, precipitation, crack propagation [1] and frictional processes at crack interfaces. Due to high sensitivity to the grain boundary characteristic…

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  • Prof. V. Shalaev, Purdue University, Electrical &

    2014-4-15 · Foods like baobab, tubers and honey are targeted year round. On the basis of these data, the resulting picture is a diet rich in simple sugars, starch and protein while lean in fat.

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  • Damping measurements via Impulse Excitation Technique

    2020-7-2 · Photoinduced nonequilibrium phenomena in magnets with strong electron correlation are reviewed. Owing to the strong competition between electron itineracy and localization and the existence of multiple degrees of freedom, a wide variety of drastic changes in electron and lattice structures are brought about by photoirradiation in correlated electron magnets.

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  • OPERATIONS STRATEGIES FOR VERTICAL SHAFT LIME

    2012-3-12 · chemical products like lime, the vertical shaft kilns offers a good investment options. This is because of the ... This kiln can be described as an upright heavy steel cylinder lined with refractory material. ... Figure 1 shows a schematic diagram of a shaft kiln. The challenge of operating a shaft kiln to

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  • IOP Conference Series: Materials Science and

    2021-4-7 · The coating material is Nano composite (metal matrix). It consists of double ceramic layer (TC1, TC2) with a layer of bond coat (BC) between the substrate (SUB) and the ceramic layers. The top Ceramic layer is of a new kind of refractory material with better oxidation resistant and …

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  • Structural and optical characterization of Cr2O3 ...

    2013-9-9 · ii. Natural phenomena or inherent characteristics of the instrument. Could be due to hysteresis or the linearization of a non-linear response, or could be due to the method used, i.e. measuring surface temperature of a pipe to represent fluid temperature. iii. Consistent operator error, i.e. parallax. c. Often can be removed or compensation ...

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  • Introduction to Measurement, Error Analysis, Propagation ...

    2021-7-8 · International Journal of Minerals, Metallurgy and Materials (IJMMM, ISSN 1674-4799, CN 11-5787/TF, monthly, started in 1994, formerly known as Journal of University of Science and Technology Beijing) is an international journal devoted to publishing original research articles (and occasional invited reviews) on all aspects of minerals processing, physical metallurgy, process metallurgy, and ...

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  • International Journal of Minerals, Metallurgy and

    2021-3-12 · The X-ray emission is characteristic of a hot plasma (~10 MK), with L X =5 × 10 30 erg s −1, and we consider its possible origin from U Mon, its companion, and/or binary system interactions. Combining DASCH and AAVSO data, we extend the time-series photometric baseline back to the late 1880s and find evidence that U Mon has secular changes ...

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  • Chondrules: The canonical and noncanonical views ...

    2007-5-31 · [10] Table 1 shows some of the apparent paleomagnetic poles proposed for Eurasia at 55 Ma, the time when India is widely considered to have begun colliding with Asia [Najman, 2006]. When “viewed” from southern Tibet, all plot to the right-hand side of the present-day pole, indicating 10 to 21 degrees clockwise motion of the region since the ...

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  • Multiwavelength Observations of the RV Tauri

    2020-8-17 · Thermoplasmonics is based on the use of plasmonic nanoparticles as sources of heat remotely controlled by light. This Review discusses its current …

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  • Introduction to Measurement, Error Analysis, Propagation ...

    2013-9-9 · ii. Natural phenomena or inherent characteristics of the instrument. Could be due to hysteresis or the linearization of a non-linear response, or could be due to the method used, i.e. measuring surface temperature of a pipe to represent fluid temperature. iii. Consistent operator error, i.e. parallax. c. Often can be removed or compensation ...

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  • Stress-strain curve | Rime's Wiki

    2014-3-16 · material's history-dependent structure. ©2001 Academic Pres& I. Introduction Glasses are disordered solids. At the molecular level, they have a liquid­ like structure and therefore lack the periodicity of crystals. Mechanically, they behave like solids, since they exhibit proportionality between stress and deformation under moderate perturbation.

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  • The logic of scientific arguments

    2021-3-12 · The X-ray emission is characteristic of a hot plasma (~10 MK), with L X =5 × 10 30 erg s −1, and we consider its possible origin from U Mon, its companion, and/or binary system interactions. Combining DASCH and AAVSO data, we extend the time-series photometric baseline back to the late 1880s and find evidence that U Mon has secular changes ...

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  • ENERGY LANDSCAPE AND STATISTICAL GEOMETRY

    A new soluble polymer foaming (PF) grouting material was developed by using hydrophilic amino resin as the base material and adding other cross-linking, foam, foam stabilizing, toughening, and coupling agents. The PF material exhibited low viscosity, excellent adhesion, and strong penetration. The grouting reinforcement effect of the proposed PF material on broken coal masses was investigated ...

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  • Mental Imagery (Stanford Encyclopedia of Philosophy)

    View Exam 1 Study Guide.docx from PSB 2000 at Florida State University. Exam 1 Study Guide PSB2000 Spring 2019 Use for more detailed studying in addition to studying the material …

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  • Multiwavelength Observations of the RV Tauri

    Molecular profiling shows a strong microenvironment imprint and overexpression of genes characteristic of normal follicular helper cells (de Leval et al, 2007). Prognosis. Publications regarding the outcome and clinical management of AITL are limited because of the rarity of the disease.

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