Search Results - "Univ. de Sevilla"

Erosion and strength degradation of biomorphic SiC by de Arellano-López, A.R., Martı́nez-Fernández, J., Varela-Feria, F.M., Orlova, T.S., Goretta, K.C., Gutierrez-Mora, F., Chen, Nan, Routbort, J.L.

“…Solid-particle-erosion studies were conducted on biomorphic SiC based on eucalyptus and pine, reaction-bonded (RB) SiC, and hot-pressed (HP) SiC. The erodents…”
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Current understanding of superplastic deformation of Y-TZP and its application to joining by Dominguez-Rodriguez, A., Gutierrez-Mora, F., Jimenez-Melendo, M., Routbort, J.L., Chaim, R.

“…A review of the high-temperature, steady-state creep of yttria tetragonal zirconia polycrystals (Y-TZP) as a function of grain size, strain rate, stress, and…”
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Interfacial sliding stress in Si{sub 3}N{sub 4}/BN fibrous monoliths by Singh, D., Goretta, K. C., Richardson,, J. W., Jr, de Arellano-Lopez, A. R., Energy Technology, Univ. de Sevilla

“…Pushout tests of Si{sub 3}N{sub 4} cells in Si{sub 3}N{sub 4}/BN fibrous monoliths yielded values for debond and sliding stresses of 45{+-}8 and 25{+-}7 MPa,…”
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Solid-particle erosion and strength degradation of Si{sub 3}N{sub 4}/BN fibrous monoliths by Goretta, K. C., Gutierrez-Mora, F., Chen, N., Routbort, J. L., Orlova, T. A., Smirnov, B. I., de Arellano-Lopez, A. R., Energy Technology, Ioffe Physical-Technical Inst. of the Russian Academy of Sciences, Univ. de Sevilla

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High-temperature deformation of Sr(FeCo){sub 1.5}O{sub x} ceramics by de Arellano-Lopez, A. R., Balachandran, U., Goretta, K. C., Ma, B., Routbort, J. L., Energy Technology, Univ. de Sevilla

“…Compressive creep of polycrystalline SrFe{sub 1.2}Co{sub 0.3}O{sub x} and SrFeCo{sub 0.5}O{sub x} ceramics has been investigated at 940-1000 C in constant-load…”
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Microstructural constraints for creep in SiC-whisker-reinforced A1203 by de Arellano-Lopez, A. R., Dominguez-Rodriguez, A., Routbort, J. L., Energy Technology, Univ. de Sevilla

“…New and published creep data obtained on a SiC-whisker-reinforced Al{sub 2}O{sub 3} composite have been analyzed in terms of an effective grain size and a…”
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Compressive creep of polycrystalline ZrSiO{sub 4} by Goretta, K. C., Cruse, T. A., Koritala, R. E., Routbort, J. L., Melendez-Martinez, J. J., de Arellano-Lopez, A. R., Univ. de Sevilla

“…Polycrystalline ZrSiO{sub 4} ceramics were prepared from commercial powder. Silicate-based glass phase was observed at multiple-grain junctions. compressive…”
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Plastic deformation of silicon nitride/boron nitride fibrous monoliths by de Arellano-López, A.R., López-Pombero, S., Domı́nguez-Rodrı́guez, A., Routbort, J.L., Singh, D., Goretta, K.C.

“…High-temperature compressive creep of unidirectional Si 3N 4/BN fibrous monoliths has been investigated at 1300–1500°C in an inert atmosphere. The results were…”
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Internal friction and Young's modulus of Si{sub 3}N{sub 4}/BN fibrous monoliths at various vibrational strain amplitudes by Kardashev, B. K., Smirnov, B. I., Singh, D., Goretta, K. C., de Arellano-Lopez, A. R., Energy Technology, Ioffe Physicotechnical Inst, Univ. de Sevilla

“…The effect of temperature and vibrational strain amplitude on Young's modulus and an ultrasound damping (internal friction) of ceramic boron nitride samples…”
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High-temperature deformation of BaCe{sub 1-x}Y{sub x}O{sub 3-y} (0.05 {le} x {le} 0.2) by Park, E. T., Goretta, K. C., De Arellano-Lopez, A. R., Guan, J., Balachandran, U., Dorris, S. E., Routbort, J. L., Energy Technology, Univ. de Sevilla

“…Compressive high-temperature deformation of BaCe{sub 1-x}Y{sub x}O{sub 3-y} polycrystals as a function of yttrium content (x=0.05, 0.1, 0.15, and 0.2) was…”
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Grain-Size Effect on Compressive Creep of Silicon-Carbide-Whisker-Reinforced Aluminum Oxide by de Arellano-López, Antonio R., Meléndez-Martínez, Juan J., Domínguez-Rodríguez, Arturo, Routbort, Jules L., Lin, Hua-Tay, Becher, Paul F.

“…The steady‐state compressive creep of Al2O3 with 10 vol% SiC whiskers having grain sizes of 1.2, 2.3, and 4.0 μm has been measured at 1400°C in argon. The…”
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Thermomechanical response of polycrystalline BaZrO{sub 3} by Goretta, K. C., Park, E. T., Koritala, R. E., Cuber, M. M., Pascual, E. A., Chen, N., de Arellano-Lopez, A. R., Routbort, J. L., Univ. de Sevilla

“…Thermomechanical properties of fine-grained, 96% dense, polycrystalline BaZrO{sub 3} specimens were studied. The average thermal expansion coefficient of…”
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Role of low-frequency vibrations on sound propagation in glasses at intermediate temperature by Criado, A., Jimenez-Ruiz, M., Cabrillo, C., Bermejo, F. J., Grimsditch, M., Fischer, H. E., Bennington, S. M., Eccleston, R. S., Materials Science Division, Conesjo Superior de Investigaciones Cientificas, Univ. de Sevilla, Inst. Laue Langevin, Rutherford Appleton Lab

“…We report measurements of the temperature dependence of the sound attenuation and the fractional change in sound velocity for the glass (G) and…”
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The structure and dynamics of an Abies pinsapo forest in southern Spain by Arista, Montserrat

“…The forest composition and age-diameter relationships of Abies pinsapo were studied in a natural forest in the Nature Reserve of the Sierra de Grazalema…”
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Strategies in Mediterranean grassland annuals in relation to stress and disturbance by Fernandez Alez, R, Laffarga, J.M, Ortega, F. (Sevilla Univ. (Spain). Dept. de Biologia Vegetal y Ecologia)

“…Morphological (size and shape) and functional (growth, reproduction and phenology) attributes are used to characterize 42 annual species of Mediterranean…”
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Patterns of ecological, chorological and taxonomic diversity at both sides of the Strait of Gibraltar by Ojeda, F., Marañón, T., Arroyo, J.

“…Diversity relations in Mediterranean heathlands and the understorey of oak woodlands on sandstone-derived substrates were studied at both sides of the Strait…”
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Differential intrachromosomal hyper-recombination phenotype of spt4 and spt6 mutants of S. cerevisiae by Malagon, F, Aguilera, A. (Sevilla Univ. (Spain). Facultad de Biologia. Dept. de Genetica)

“…In order to test whether mutations affecting transcription also affect DNA recombination, we have determined the influence of a number of snf/swi and spt/sin…”
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Genetic evidence for different RAD52-dependent intrachromosomal recombination pathways in Saccharomyces cerevisiae by Aguilera, A. (Sevilla Univ. (Spain). Facultad de Biologia. Dept. de Genetica)

“…Mutations in the RecA-like genes RAD51 and RAD57 reduce the frequency of gene conversion/reciprocal exchange between inverted repeats 7-fold. However, they…”
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Pollen dispersal capacity and pollen viability of Abies pinsapo Boiss by Arista, M. (Sevilla Univ. (Spain). Dept. de Biologia Vegetal y Ecologia), Talavera, S

“…Fresh- and stored-pollen viability, duration of pollen shedding, and pollen dispersal capacity were studied in a natural Abies pinsapo forest located in Sierra…”
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Growth of Halimium halimifolium under simulated and natural browsing in the Donana National Park (SW Spain) by Aguilar Silva, F.J. (Sevilla Univ. (Spain). Dept. de Biologia Vegetal y Ecologia), Diaz Barradas, M.C, Zunzunegui, M

“…The annual cycle of vegetative growth in the Mediterranean shrub Halimium halimifolium (Cistaceae) subjected to simulated and natural browsing on the…”
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