Bibliografías temáticas / E. Reactive infiltration

Literatura académica sobre el tema "E. Reactive infiltration"

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Artículos de revistas sobre el tema "E. Reactive infiltration"

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CHADAM, J., D. HOFF, E. MERINO, P. ORTOLEVA y A. SEN. "Reactive Infiltration Instabilities". IMA Journal of Applied Mathematics 36, n.º 3 (1986): 207–21. http://dx.doi.org/10.1093/imamat/36.3.207.

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Eustathopoulos, N., R. Israel, B. Drevet y D. Camel. "Reactive infiltration by Si: Infiltration versus wetting". Scripta Materialia 62, n.º 12 (junio de 2010): 966–71. http://dx.doi.org/10.1016/j.scriptamat.2010.02.030.

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Sangsuwan, Prasert, Joaquín A. Orejas, Jorge E. Gatica, Surendra N. Tewari y Mrityunjay Singh. "Reaction-Bonded Silicon Carbide by Reactive Infiltration". Industrial & Engineering Chemistry Research 40, n.º 23 (noviembre de 2001): 5191–98. http://dx.doi.org/10.1021/ie001029e.

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Kobayashi, Yoshihiro, Makoto Kobashi y Naoyuki Kanetake. "Fabrication of Oxide Ceramics Composite by Reactive Infiltration Process". Advanced Materials Research 26-28 (octubre de 2007): 321–24. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.321.

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Reactive infiltration is a manufacturing process of metal matrix composites with low cost and low environmental impacts. In this study, reactive infiltration of a NiO/Ti blended powder preform with molten Al was examined. Titanium powder as an infiltration aid was mixed with NiO powder by various blending ratios. The preform and the Al ingot were then heated together up to 1273K ~1673K and held at these processing temperatures for 60 minutes by an induction furnace in N2 gas atmosphere. After the heating process, the vertical cross section was observed to see whether the infiltration and the in situ reaction occurred successfully. Spontaneous infiltration of molten aluminum into the powder preform did not occur when either processing temperature or blending ratio of titanium was not sufficiently high enough. Spontaneous infiltration occurred when processing temperature and volume fraction of titanium were 1273K, 1373K and 15%, 20%. But when volume fraction of titanium was 25%, the preform exploded by an extremely high. It was confirmed that Al3Ti, Al3Ni2 and Al2O3 were formed after the infiltration.
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Szymczak, Piotr y Anthony J. C. Ladd. "Reactive-infiltration instabilities in rocks. Fracture dissolution". Journal of Fluid Mechanics 702 (28 de mayo de 2012): 239–64. http://dx.doi.org/10.1017/jfm.2012.174.

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AbstractA reactive fluid dissolving the surface of a uniform fracture will trigger an instability in the dissolution front, leading to spontaneous formation of pronounced well-spaced channels in the surrounding rock matrix. Although the underlying mechanism is similar to the wormhole instability in porous rocks there are significant differences in the physics, due to the absence of a steadily propagating reaction front. In previous work we have described the geophysical implications of this instability in regard to the formation of long conduits in soluble rocks. Here we describe a more general linear stability analysis, including axial diffusion, transport-limited dissolution, nonlinear kinetics, and a finite-length system.
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Hozer, Leszek y Yet-Ming Chiang. "Reactive-infiltration processing of SiC-metal and SiC-intermetallic composites". Journal of Materials Research 11, n.º 9 (septiembre de 1996): 2346–57. http://dx.doi.org/10.1557/jmr.1996.0298.

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Liquid-phase reactive infiltration is a rapid and net-shape method of synthesizing silicon carbide composites. We use reactive infiltration of carbon with Si–A1 and Si–Cu melts to prepare composites consisting of interpenetrating networks of β–SiC and a secondary phase assemblage containing ductile metal (A1–Si) or a metal silicide (Si–Cu). The mechanisms of phase formation have been characterized. It is shown that a rapid initial reaction upon infiltration forms a largely stationary SiC network, within which the secondary phase constitution evolves due to solute rejection and liquid phase diffusion processes. Both homogeneous composites and those with controlled composition gradients have been synthesized.
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Tong, Yonggang, Shuxin Bai, Xiubing Liang, Qing H. Qin y Jiangtao Zhai. "Reactive melt infiltration fabrication of C/C-SiC composite: Wetting and infiltration". Ceramics International 42, n.º 15 (noviembre de 2016): 17174–78. http://dx.doi.org/10.1016/j.ceramint.2016.08.007.

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Caccia, Mario y Javier Narciso. "Production of SiC Materials by Reactive Infiltration". Materials Science Forum 783-786 (mayo de 2014): 1863–66. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.1863.

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The use of oak sawdust as carbon precursor for SiC manufacture via reactive infiltration was studied. The effect of oak sawdust pressing parameters, temperature and pressure, on the final SiC's properties was studied. Final product's quality was evaluated through density measurement, and microstructure and pore size distribution variations were characterized with optical microscopy and mercury porosimetry. Pressed oak sawdust preforms were carbonized to obtain a carbon porous preform which was then infiltrated with melted silicon. Successful infiltration of preforms pressed at room temperatures were performed, to obtain a porous SiC. Hot pressed preforms were not satisfactory infiltrated due to a narrowing of their pores caused by SiC formation's expansiveness.
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Chen, Yuyong y D. L. Chung. "Nickel aluminide (Ni3Al) fabricated by reactive infiltration". Journal of Materials Science 31, n.º 8 (abril de 1996): 2117–22. http://dx.doi.org/10.1007/bf00356634.

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Roessler, Karl, Gerda Suchanek, Helene Breitschopf, Klaus Kitz, Christian Matula, Hans Lassmann y Wolfgang Th Koos. "Detection of tumor necrosis factor-α protein and messenger RNA in human glial brain tumors: comparison of immunohistochemistry with in situ hybridization using molecular probes". Journal of Neurosurgery 83, n.º 2 (agosto de 1995): 291–97. http://dx.doi.org/10.3171/jns.1995.83.2.0291.

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✓ Tumor necrosis factor-α (TNFα) protein and messenger (m)RNA distribution was studied in biopsy samples of glial brain tumors, using immunohistochemistry and in situ hybridization with molecular probes, to investigate the role of this cytokine in tumor proliferation and immunological host defense. Focal expression of TNFα was detected in four of four glioblastomas, one of two anaplastic astrocytomas, and four of five low-grade astrocytomas, regardless of their subtype or grade of malignancy, but in none of the normal peritumoral brain tissues used as controls. The TNFα protein and mRNA were present in reactive astrocytes and protoplasmic tumor cells, confined to areas of leukocyte or T-lymphocyte infiltration, and less pronounced in tumor cells at the edge of necrosis. Additionally, TNFα reactivity was found in infiltrating macrophages and perivascular microglia. Immunohistochemistry and in situ hybridization for TNFα showed comparable reaction patterns and numbers of TNFα-positive cells, even though the sensitivity of in situ hybridization was significantly higher. Quantitative evaluation of TNFα protein, TNFα mRNA, and leukocyte infiltration revealed a significant positive correlation between the TNFα-positive reactive astrocytes and the number of lymphocytes present in corresponding areas. Together, these data lead to the conclusion that TNFα in reactive astrocytes and monocytic cells within tumor areas of high leukocyte infiltration and in tumor cells at the border of necrosis may represent one defense pathway of the immune system against tumor proliferation.
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Tesis sobre el tema "E. Reactive infiltration"

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San, Marchi Christopher William. "Processing of aluminum-nickel intermetallics by reactive infiltration". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43369.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
Includes bibliographical references (p. 107-111).
by Christopher William San Marchi.
Ph.D.
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Ventakesh, T. A. 1970. "Reactive infiltration processing and compression creep of NiAl and NiAl composites". Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/50458.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1998.
Includes bibliographical references (p. 116-118).
Reactive infiltration processing of bulk and composite NiAl was investigated with powder and wire preforms of nickel. Inhomogeneous microstructures were often obtained with powder preforms because their high surface-to-volume ratio, low permeability, and irregular infiltration paths lead to simultaneous infiltration and reaction. Homogenous NiAl could be obtained with nickel-wire preforms which had a lower surface-to-volume ratio, higher permeability, and regular infiltration paths, because infiltration was completed before the onset of reaction. Composites with continuous tungsten (W) and sapphire fibers were also successfully fabricated by reactive infiltration, while composites with molybdenum particulates and short-fibers showed significant dissolution in NiAl. The high-temperature uni-axial compression creep behavior of uni-directionally reinforced continuous fiber composite materials was investigated using NiAl-W as a model system for the case where both the NiAl matrix and the W fiber underwent plastic deformation by creep. The creep behavior of the constituents NiAl and W and NiAl composites reinforced with 5-20 volume % W was characterized at 1025 °C and 715 °C. At 1025°C, the NiAl-W composites exhibited three stage creep behavior with distinct primary, secondary, and tertiary creep, wherein the composite creep-rate decreased monotonically, remained constant, and increased rapidly, respectively. At 715C, the NiAl-W composites exhibited insignificant primary and tertiary creep but significant secondary creep. Microstructurally, primary and secondary creep were characterized by pure uni-axial compression of W fibers while brooming, bulging, buckling, and kinking were four fiber deformation modes that contributed to tertiary creep. The composite primary creep was modeled by solving for transient stress-states while loads transferred from the weaker phase (matrix) to the stronger phase (fiber) as the composite transitioned from the elastic state present at loading to steady-states attained at later times. The effects of primary creep of the constituents on the primary creep of the composite were also captured. Composite primary creep strains were predicted to be significant at high applied composite stresses and for high fiber volume fraction composites, while the composite primary time was uniquely related to the composite steady-state creep-rate by a power-law at a given temperature and for the stress range investigated. Good correlation between the primary creep model predictions and experiments was obtained when the observed composite steady-state creep behavior converged to the McLean steady-state. The composite secondary creep was observed to correlate reasonably well with the rule-of-mixtures model developed by McLean. The composite tertiary creep was modeled by solving for global or local kink-band evolution with composite deformation respectively contributing to fiber buckling or kinking. The model predicted the critical threshold strain for the onset of tertiary stage to be most sensitive to the initial kink angles while being relatively insensitive to the initial kink-band heights and varied inversely with the volume fraction of fiber in the composite. Reasonable correlation between the model and experiments was obtained when the observed composite steady-state correlated well with the McLean steady-state.
by T.A. Venkatesh.
Ph.D.
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Caccia, Mario. "Synthesis and Processing of SiC-based Composite Materials by Reactive Infiltration". Doctoral thesis, Universidad de Alicante, 2016. http://hdl.handle.net/10045/72732.

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ZHOU, HONG. "KINETICS, PROCESSING, AND PROPERTIES OF Si/SiC COMPOSITES FABRICATED BY REACTIVE-MELT INFILTRATION". University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin994941745.

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Kütemeyer, Marius [Verfasser] y D. [Akademischer Betreuer] Koch. "Development of Ultra High Temperature Matrix Composites using a Reactive Melt Infiltration Process / Marius Kütemeyer ; Betreuer: D. Koch". Karlsruhe : KIT-Bibliothek, 2021. http://d-nb.info/1230475699/34.

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Fatehi, Pouladi Soheil. "Phosphorus Removal from Domestic Wastewater Using Dual Reactive Materials Polonite® and Absol®". Thesis, KTH, Miljögeokemi och ekoteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95429.

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Private wastewater treatment facilities release tons of phosphorus to the aquatic environment due to the insufficient removal efficiency in conventional soil infiltration systems. Reactive filter materials have demonstrated promising P removal rates. Laboratory-scale column experiments were carried out using Absol® and Polonite® in dual infiltration media and results were compared with Polonite® functioning as the only layer of reactive filter material. Two sets of experiments were arranged with layer lengths of 5 cm and 15 cm which were operated for 50 and 119 days respectively. Columns with an additional layer of Absol® demonstrated very good average removal rates of 85.99 % and 99.13 % in both experiments while the effluent in the former exceeded the maximum allowed P concentration shortly after half of the total time of the experiment. On the other hand, O-P concentration in collected samples from dual filter media with 15 cm layers of Absol® and Polonite® (column B1) was as low as 0.04 mg/l after 119 days of operation exhibiting high potentials for Absol® in local wastewater treatment. Levels of pH in treated samples showed a decreasing trend in all columns which was similarly simultaneous with high removal rates observed in B1.
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Valhondo, Cristina. "A reactive barrier to enhance the removal of emerging organic compounds during artificial recharge of aquifers through infiltration basins". Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/405794.

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Artificial recharge of aquifers through infiltration basins (AR) improves water quality and in- creases groundwater resources, which make of it an appropriate technique for the renaturalization of waters affected directly or indirectly by wastewater effluents. Emerging organic compounds (EOCs), typically present in such waters, are mainly reduced during AR by sorption and biotrans- formation. We installed a reactive barrier in an infiltration basin (5000 m2) to enhance the removal of EOCs in the recharge water. The barrier consisted of sand, vegetable compost, iron oxide and clay. Vegetable compost was aimed at: 1) release organic carbon to be used as a carbon source by the microbial community thus promoting the generation of diverse redox conditions, and 2) to adsorb neutral EOCs. Clay and iron oxides were aimed at increasing sorption sites for cationic and anionic EOCs, respectively. Field application of such a design was tested by comparing the redox indicators and behavior of EOCs prior and after the installation of the reactive barrier. Residence time distributions of the recharge water at the monitoring points were obtained by a pulse tracer test. These distributions were used for calibrating a conservative transport and flow model of the aquifer. Finally, first order rates and retardation factors of several EOCs were estimated by fitting model outputs to observed concentrations. The estimation of the first order decay rates and retardation factors of several EOCs allowed the comparison of such values with values reported from other field sites and column experiments. The reactive barrier succeed in releasing organic carbon and achieving diverse redox condi- tions. The transformation of most EOCs was enhanced after the installation of the reactive barrier. In fact, first order rates and retardation factors were higher in the reactive barrier than in the rest of the aquifer and similar or higher than those from literature. In summary, addition of proposed reactive barrier significantly enhanced the performance of artificial recharge via infiltration basins, thus contributing to the renaturalization of recharged waters.
La recarga artificial de acuíferos a través de balsas de infiltración (AR) mejora la calidad del agua y aumenta recursos de aguas subterráneas, convirtiéndola en una técnica apropiada para la renaturalización de las aguas afectadas directa o indirectamente por los efluentes de aguas residuales. En este tipo de aguas la presencia de compuestos orgánicos emergentes (EOCs) es más que frecuente. Durante la recarga artificial este tipo de compuestos es eliminado principalmente debido a la adsorción y a la biotransformación. Para mejorar la eliminación de los EOCs durante la infiltración del agua de recarga se instaló una barrera reactiva en una balsa de infiltración. La barrera consistía en arena, compost vegetal, óxidos de hierro y arcilla. La finalidad del compost vegetal era por un lado la de aportar carbono orgánico disuelto para ser utilizado como principal fuente de carbono por la comunidad microbiana promoviendo así la generación de diversas condiciones redox, y por otro lado la de adsorber EOCs neutros. La Arcilla y los óxidos de hierro se pusieron con la intención de aumentar los sitios de adsorción para los EOCs catiónicos y aniónicos, respectivamente. La efectividad de la barrera en el campo se estudió comparando el comportamiento de los indicadores redox y de los EOCs antes y después de la instalación de la barrera. Mediante un ensayo de trazadores tipo pulso se obtuvieron las distribuciones de los tiempos de residencia del agua de recarga a los puntos de observación. Estas distribuciones se utilizaron para calibrar un modelo de flujo y transporte conservativo del acuífero. Por último, las tasas de degradación de primer orden y los factores de retardo de varios EOCs se estimaron mediante el ajuste de los resultados del modelo con las concentraciones observadas. Las tasas de degradación y los factores de retardo estimados se compararon con valores encontrados en la bibliografía. La barrera reactiva cumple su función aportando carbono orgánico y generando diversas condiciones redox. Muchos de los EOCs estudiados mostraron una mejor transformación cuando la recarga se realizó con la barrera reactiva. Las tasas de degradación y factores de retardo estimados en la barrera son mayores que los estimados para el resto del acuífero, y del mismo orden o superiores a los encontrados en la bibliografía. En resumen, la barrera reactiva propuesta mejora significativamente el rendimiento de la recarga artificial a través de balsas de infiltración, contribuyendo así a la renaturalización de las aguas recargadas
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Richet, Nicolas. "Elaboration et caractérisation d'une protection anti-oxydation pour matériaux carbonnes : le système HfB(2)-SiC". Limoges, 2003. http://www.unilim.fr/theses-doctorat/2003LIMO0023/html/index-frames.html.

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L’objectif de ce travail a été la réalisation et la caractérisation d’une protection contre l’oxydation de matériaux carbonés, constituée d’une couche composite HfB2SiC et d’une couche d’accrochage de SiC. Le procédé d’élaboration utilise l’infiltration de silicium liquide dans une préforme poreuse constituée de grains de HfB2 et de carbone issu de la décomposition d’une résine. La réaction entre le silicium et le carbone forme une matrice de SiC et à l’interface le silicium réagit avec le substrat pour donner SiC et assurer un accrochage chimique et mécanique. Les conditions d’élaboration ont été étudiées afin de réaliser un revêtement compact et homogène. La microstructure obtenue se compose de grains de HfB2 et de nanoparticules de SiC mise en évidence par microscopie électronique en transmission. Une phase intermédiaire contenant Hf-B-Si-C a été détectée, par spectrométrie Auger, en périphérie des grains de HfB2. Le comportement à l’oxydation a été étudié dans un large domaine de pression d’oxygène (1-200 mbar) en montée linéaire de température et en régime isotherme. Deux domaines correspondant respectivement à l’oxydation de la phase intermédiaire vers 600°C-700°C et des nanoparticules de SiC vers 900-1000°C, conduisent à la formation d’un verre borosilicaté cicatrisant. La présence de B2O3 à haute température favorise la dissolution de HfO2 dans le verre. La phase vitreuse stable à très haute température constitue alors une barrière de diffusion à l’oxygène de quelques dizaines de microns. En régime isotherme, la cinétique tend rapidement vers un régime parabolique très lent jusqu’à 1700°C. A basse pression partielle d’oxygène un domaine d’oxydation active apparaît. La comparaison avec le carbure de silicium montre que le verre formé est plus stable que la silice pure
The aim of this work is the elaboration and the caracterisation of HfB2SiC oxidation protection coating for carbon based materials. Silicon carbide is formed by reactive infiltration of silicon through a porous carbon/HfB2 grains layer. The coating microstructure is composed of HfB2 grains surrounded by SiC nanoparticles and a phase containing Hf-B-Si-C at the interface between HfB2 and Sic. The oxidation behaviour was studied between 1 and 200 mbar by linear increase of temperature and under isothermal conditions. A sealing refractory glass, more stable than pure silica, is formed. The oxidation kinetic follows very quickly a slow parabolic law up to 1 700°C
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Quet, Aurélie. "Composites de friction à matrice céramique : relation composition / structure / comportement tribologique". Bordeaux 1, 2007. http://www.theses.fr/2007BOR13512.

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Les composites C/C sont acutellement les matériaux les mieux adaptés aux exigences du freinage aéronautique. Ils présentent cependant un taux d'usure accru pour les freinages de taxiage. Les composites à matrice SiC se caractérisent par un lissage de cette bosse d'usure observée aux basses températures mais ils ne satisfont pas aux exigences du freinage de détresse. L'objectif de la thèse est d'introduire un autre carbure que le SiC dans la matrice des composites de friction et d'évaluer son influence sur le comportement tribologique des composites élaborés. Des composites C/C-ZrC et C/CTiC ont ainsi été élaborés via le procédé RMI (Reactive Melt Infiltration). Ces matériaux ont été caractérisés à travers des analyses morphologiques, chimiques et structurales. Une décohésion est présente à l'interface matrice de carbone/carbure. L'utilisation d'alliages, notamment à base de silicium, permet de limiter ce phénomène de décohésion. Les matériaux éléborés ont ensuite été testés sur un banc de simulation de freinage. Les composites C/C-ZrC e C/CTiC satisfont les conditions du RTO. Cependant, les composites à matrices ZrC montrent une usure très élevée à haute température en relation avec leur comportement à l'oxydation. Les composites à matrice TiC présentent une usure acceptable à haute température et une troncature de la bosse d'usure observée aux faibles températures, ce qui est lié à des coefficents de frottement faibles
C/C composites are nowadays the most suitable materials for needs of aircraft braking. However, they show a high wear during taxiing. SiC matrix composites are characterised by a smoothing of the wear peak noticed at low temperatures but they don't meet requirements of rejected take-off (RTO). The aim of this work is to put another carbide than SiC in the matrix of friction composites and to assess its influence on tribological properties of materials. C/C-ZrC and C/C-TiC composites were manufactured using RMI processing route (Reactive Melt Infiltration). Materials were characterised with mophological, chemical and structural analysis which reveal especially a decohesion between carbon phase and carbide phase. This gap can be limited using alloys as Zr-Si and Ti-Si alloys. Triboligical behaviour of the resulting materials was then investigated with an inertial dynamometer simulating brake stops. C/C-ZrC and C/C-TiC composites meet RTO requirements. Neverless, ZrC matrix composites have a high wear for high temperature brake stops linked to their oxidation behaviour. TiC matrix composites present moderate wear at high temperature and a lower wear at low temperature compared to C/C composites in relation to low friction coefficients
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Mills, Kevin. "The response of reactive clay soils to wetting agents in the presence of active vegetation". Thesis, Queensland University of Technology, 1998.

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Libros sobre el tema "E. Reactive infiltration"

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Singh, M. Reactive melt infiltration of silicon-molybdenum alloys into microporous carbon preforms. [Washington, D.C: National Aeronautics and Space Administration, 1995.

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R, Behrendt D. y United States. National Aeronautics and Space Administration., eds. Studies on the reactive melt infiltration of silicon and silicon-molybdenum alloys in porous carbon. [Washington, DC: National Aeronautics and Space Administration, 1992.

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Singh, M. Studies on the reactive melt infiltration of silicon and silicon-molybdenum alloys in porous carbon. [Washington, DC: National Aeronautics and Space Administration, 1992.

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M, Singh y United States. National Aeronautics and Space Administration., eds. Theoretical considerations for reaction-formed silicon carbide (RFSC) formation by molten silicon infiltration into slurry-derived preforms. [Washington, DC: National Aeronautics and Space Administration, 1993.

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Theoretical considerations for reaction-formed silicon carbide (RFSC) formation by molten silicon infiltration into slurry-derived preforms. [Washington, DC: National Aeronautics and Space Administration, 1993.

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National Aeronautics and Space Administration (NASA) Staff. Theoretical Considerations for Reaction-Formed Silicon Carbide (Rfsc) Formation by Molten Silicon Infiltration into Slurry-Derived Preforms. Independently Published, 2019.

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Pieth, Mark. Finance and the “Shadow Economy”. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190458331.003.0009.

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This chapter focuses on corruption in the banking and finance industry, and the steps that have been taken to combat the problem. Overall the financial services industry carries a heavy responsibility for large-scale corruption. Financial intermediaries and banks are used typically in grand corruption schemes by corporations, let alone by kleptocratic regimes, and frequently, they are fully aware of what they are involved in. To prevent them from being inadvertently used for such purposes, compliance systems need to be in place reacting to the specific risks related to graft and corruption by clients. Rules need to be implemented and applied, which can be a challenging task for an industry above all interested in making money. The authors discuss “slush funds,” the development and infiltration of money laundering, and how the FATF established an action plan to deal with this issue. They evaluate the current status of rules against corruption-money laundering.
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Moerdler, Scott y Xingxing Zang. PD-1/PDL-1 Inhibitors as Immunotherapy for Ovarian Cancer. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190248208.003.0010.

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Programmed death 1 (PD-1), a member of the B7-CD28 immunoglobulin superfamily, and its ligands PD-L1/PD-L2 inhibit T-cell activation. They also play a key role in the tumor microenvironment, allowing for cancer immune escape. PD-1 is induced on a variety of immune cells, including tumor-infiltrating lymphocytes (TILs), while PD-L1 is found on many types of solid tumors including ovarian cancer and some TILs. The use of immunocheckpoint inhibitors like anti-PD-1 and anti-PD-L1 therapies has been shown to reactivate the immune system to attack tumor cells. Ovarian cancers have been shown to be responsive to anti-PD-1 and anti-PD-L1 therapies, though immunocheckpoint inhibitors are not enough. Current research is evaluating combination therapies to improve response rates.
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Capítulos de libros sobre el tema "E. Reactive infiltration"

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Caccia, Mario y Javier Narciso. "SiC Manufacture Via Reactive Infiltration". En Ceramic Transactions Series, 15–25. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118995433.ch2.

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Chadam, John. "Reactive Flows in Porous Media: The Reaction-Infiltration Instability". En Flow in Porous Media, 51–58. Basel: Birkhäuser Basel, 1993. http://dx.doi.org/10.1007/978-3-0348-8564-5_6.

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Kobayashi, Yoshihiro, Makoto Kobashi y Naoyuki Kanetake. "Fabrication of Oxide Ceramics Composite by Reactive Infiltration Process". En Advanced Materials Research, 321–24. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-463-4.321.

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Wali, Natalie y J. M. Yang. "Reactive Melt-Infiltration Processing of Fiber-Reinforced Ceramic Matrix Composites". En Ceramics and Composites Processing Methods, 351–90. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118176665.ch10.

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Voigt, R., W. Krenkel, G. Motz y A. Can. "Development of Ultra-High Temperature Stable Ceramics by Reactive Infiltration Processes". En Ceramic Transactions Series, 121–30. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118144442.ch11.

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Casagrande, A., G. P. Cammarota y L. Ceschini. "Synthesis of Intermetallic Alumina Composites with Interpenetrating Phases by Reactive Metal Infiltration". En Intermetallics and Superalloys, 140–45. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607285.ch24.

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Kütemeyer, Marius, Darren Shandler, Dietmar Koch y Martin Friess. "Reactive Melt Infiltration of Boron Containing Fiber Reinforced Preforms Forming a ZrB2Matrix". En Processing and Properties of Advanced Ceramics and Composites VII, 169–80. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119183860.ch18.

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Escalera-Lozano, Rodrigo, Carlos A. Gutiérrez-Chavarría, Max A. Pech-Canul y Martin I. Pech-Canul. "Degradation of Al/SiCp Composites Processed with Fly Ash via Reactive Infiltration". En Advanced Structural Materials III, 139–44. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-446-4.139.

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Giunchi, Giovanni, Giovanni Ripamonti, Elena Perini, Stefano Ginocchio, Enrico Bassani y Tommaso Cavallin. "Highly Densified MgB2 Bulks by Reactive Mg Liquid Infiltration". En Advances in Science and Technology, 7–16. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908158-03-6.7.

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Byerley, B. T. y W. D. Robertson. "Remediation of Landfill Leachate Using Infiltration Bed and Reactive Barrier Technology: A Field Study". En Environmental Biotechnology, 417–30. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-017-1435-8_36.

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Actas de conferencias sobre el tema "E. Reactive infiltration"

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Nelson, Emily S. y Phillip Colella. "Parametric Study of Reactive Melt Infiltration". En ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0794.

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Abstract Reactive melt infiltration is viewed as a promising means of achieving near-net shape manufacturing with quick processing time and at low cost. Since the reactants and products are, in general, of varying density, overall conservation of mass dictates that there is a force related to chemical conversion which can directly influence infiltration behavior. In effect, the driving pressure forces may compete with the forces from chemical conversion, affecting the advancement of the front. We have developed a two-dimensional numerical code to examine these effects, using reaction-formed silicon carbide as a model system for this process. We have examined a range of initial porosities, pore radii, and reaction rates in order to investigate their effects on infiltration dynamics.
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Balagangadhar, Dinesh y Gopalaswamy Rajesh. "Macro Modeling of Reactive Infiltration Using Level Set Finite Element Formulations". En ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1239.

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Abstract The process of reactive melt infiltration can be used to fabricate ceramics and ceramic matrix composites. This process involves a liquid metal being allowed to infiltrate a medium with which the liquid reacts to form a resultant ‘matrix’ along with the already present reinforcing fibers. The authors’ previous work on this area revealed that the transient porosity and permeability of a porous medium can be determined for certain geometries from the reaction kinetics and coupled heat and mass transfer problem occurring at the pore level. But the formulation at the macro level, which is essential to optimize the process, has been limited. Towards this end, this paper solves the macro reactive flow problem in a porous medium analytically as well as numerically. The focus of this article will be on the solutions for the advance (displacement) of the ‘infiltration front’ with progressive chemical reaction occurring between the medium and the infiltrant. A finite element formulation is used to solve the problem computationally; a level set formulation is used to track the infiltration front during the process. Excellent agreement is obtained between the analytical and computational solutions thereby validating the level set finite element formulations.
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Pons, A., C. Descamps, Eric Arquis, Stephane Vincent, C. Le Bot y M. Valat. "SIMULATION OF REACTIVE MELT INFILTRATION FOR THE MANUFACTURE OF CERAMIC MATRIX COMPOSITES". En Proceedings of CHT-15. 6th International Symposium on ADVANCES IN COMPUTATIONAL HEAT TRANSFER , May 25-29, 2015, Rutgers University, New Brunswick, NJ, USA. Connecticut: Begellhouse, 2015. http://dx.doi.org/10.1615/ichmt.2015.intsympadvcomputheattransf.710.

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Giunchi, Giovanni. "The Superconducting Properties of High Density Bulk MgB2 Obtained by Reactive Liquid Mg Infiltration". En ADVANCES IN CRYOGENIC ENGINEERING. AIP, 2006. http://dx.doi.org/10.1063/1.2192428.

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Nagaraj, B. A. y D. J. Wortman. "Burner Rig Evaluation of Ceramic Coatings With Vanadium-Contaminated Fuels". En ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-270.

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The performance of yttria stabilized zirconia (YSZ), ceria stabilized zirconia (CSZ), and magnesia stabilized zirconia (MSZ) coatings was evaluated using an atmospheric burner rig; the test environment contained compounds of vanadium, sodium and sulfur. The coatings were deposited by plasma spraying and electron beam physical vapor deposition (EB-PVD); sputtered sealant layers of hafnia, alumina and platinum were deposited on the yttria stabilized zirconia coating (YSZ). The tests were performed for up to 500 hours at 1650°F and 1300°F. The tests were designed to simulate the deposit chemistry and sulfur trioxide partial pressures expected in a marine gas turbine engine operating on contaminated fuel. YSZ, CSZ, and MSZ coatings all underwent reaction in the burner rig environment; the reaction products and their effects on spallation were varied. MSZ was by far the most reactive, readily forming MgSO4 in both 1650°F and 1300°F tests. The observed reaction products provided a measure of “protection” for the bond coat by preventing molten salt infiltration in the duration of the test. The mechanism of ceramic spallation is discussed. Sputtered overlayers of platinum, hafnia and alumina did not prevent salt infiltration and reaction with the underlying ceramic, although no reaction product between the overlayer and the salt was observed.
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Giunchi, Giovanni, Alessandro Figini Albisetti, Luciana Malpezzi, Luca Saglietti y Elena Perini. "High performance bulk MgB2 obtained by the Reactive Mg-Liquid Infiltration process: New advancements and solutions". En 2011 International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD). IEEE, 2011. http://dx.doi.org/10.1109/asemd.2011.6145132.

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Giunchi, G., T. Cavallin, P. Bassani, S. Guicciardi, U. (Balu) Balachandran, Kathleen Amm, David Evans et al. "THE MECHANICAL PROPERTIES OF THE MgB[sub 2] BULK MATERIALS OBTAINED BY REACTIVE LIQUID Mg INFILTRATION". En ADVANCES IN CRYOGENIC ENGINEERING MATERIALS: Transactions of the International Cryogenic Materials Conference - ICMC, Vol. 54. AIP, 2008. http://dx.doi.org/10.1063/1.2900373.

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Luckhardt, Tracy R., Zhihuan Sun, Lanfang Wang, Tong H. Jin, Guangjie Cheng, Victor J. Thannickal y Jessy Deshane. "Viral Latency-Associated Infiltration Of Reactive Oxygen Species Generating Immunoregulatory Myeloid-Derived Cells Following GHV68 Infection". En American Thoracic Society 2012 International Conference, May 18-23, 2012 • San Francisco, California. American Thoracic Society, 2012. http://dx.doi.org/10.1164/ajrccm-conference.2012.185.1_meetingabstracts.a5412.

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Tian, Sheng, Thomas Thundat, Subir Bhattacharjee, Kenneth C. Cadien y Sushanta K. Mitra. "On-Chip Power Generation: Microfluidic-Based Reactor for Catalytic Combustion of Methanol". En ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62776.

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In this paper, a batch of microfluidic-based reactors with integrated micropillars was fabricated on silicon wafer with standard optical lithography and deep reactive-ion etching (DRIE) technique. A Bosch process of DIRE was used to obtain ∼ 85 μm etching depth and undulating sidewall profiles on the surface of those micropillars. Such structures boost surface-area-to-volume-ratio as well as enhance heat and mass transfer coefficients. Platinum (Pt) nanoparticles (NPs) stabilized by poly-acrylate sodium in a water-ethonal-based suspension were deposited on the reactor surface using a surface-selective infiltration method. By introducing methanol vapor/air gas mixture into the reactors, stable catalytic combustion of methanol over Pt NPs starting from room temperature can be achieved.
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Schiaffino, Arturo, V. M. Krushnarao Kotteda, Vinod Kumar, Arturo Bronson y Sanjay Shantha-Kumar. "Uncertainty Quantification of Molten Hafnium Infusion Into a B4C Packed-Bed". En ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5281.

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Abstract In the manufacturing of metal matrix composites (MMC), liquid-metal reactive infusion with a solid mesh or particles composed of ceramic or metal may be used. The objective of this study is to determine the uncertainty quantification of the modeling of liquid hafnium infusion to expedite the processing and improve properties of MMCs ultimately. Uncertainty quantification (UQ) characterized the uncertainty scientifically especially for high-performance computing with observed physics and/or chemistry of the phenomena and predicted from estimated parameters. In this work, molten hafnium infusing through a boron carbide packed bed is modeled to optimize the manufacturing of components used for a hypersonic vehicle. The creation of molten matrix composites by the infiltration of molten metal represents a formidable challenge to be accurately modeled. First, the structural randomness associated with porous mediums complicates the prediction of the flow passing through it. Secondly, the properties of the molten metal could vary inside our control volume, since the temperature inside the control volume is not constant. Also, there are several chemical reactions and solidification rates occurring in during the impregnation. Given the recent advances in high-performance computing, an in-house pore network simulator are implemented along with Dakota, an open-source, exascale software, to determine the optimal parameters (e.g., porosity and temperature) and uncertainty quantification for the modeling.
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Informes sobre el tema "E. Reactive infiltration"

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Ladd, Anthony. Reaction-Infiltration Instabilities in Fractured and Porous Rocks. Office of Scientific and Technical Information (OSTI), septiembre de 2017. http://dx.doi.org/10.2172/1392514.

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