Optical properties of rare-earth oxides and oxynitrides, .... towards "second generation" UV absorbers

International audience"Second-generation" UV-blocking materials are needed. Using the fluorite-type rare-earth tungstates R6WO12 as starting reference compounds, anionic or cationic substitutions were achieved in (R,R’)-(W,Mo)-(O,N) systems, thus delimiting large solid solution domains. The continuous shift of the absorption edge in diffuse reflectance spectra towards lower energy values makes it possible to tune it at the required value of 3.1 eV (400 nm), with in several cases a steep enough slope. Attempts were also carried out in perovskite (A,R)-Ti-(O,N) systems (A = alkaline-earth, R = rare-earth) to isolate suitable oxynitride compositions

Contribution à l'étude des micromammifères de la chaîne des Pyrénées : particularités de l'extrême oriental (Massif des Albères)

La faune des micromammifères de la chaîne des Pyrénées, composée de 32 espèces, présente des variations selon les versants. L'extrême oriental (Albères) montre la composition la plus basse. Ce déficit serait encore plus accentué sans la présence de la hêtraie de la réserve naturelle de la Massane qui détermine la plus grande richesse du versant septentrional (19 espèces) comparée au versant méridional(14 espèces). La présente contribution, résultat de prospections réalisées durant ces vingt dernières années, analyse comparativement pour la première fois, les communautés de micromammifères -insectivores et rongeurs- des versants français et espagnol de l'extrémité orientale soulignant sa spécificité i l'intérieur de la chaîne des Pyrénées. La succession des faunes de micromammifères a été étudiée après l'incendie dans divers rnilieux méditerranéens du Massif des Albères. Parallblement, la composition et la dynamique des populations ont été observées dans des zones témoins non brulées. La vitesse de recolonisation dépend de la capacité de dispersion, des migrations allochtones et des stratégies démographiques chez quatre espèces: C. russula, A. sylvaticus, M. spretus, et E. quercinus. La musaraigne C. suaveolens est citée, pour la première fois en Catalogne ibérique.Small mammals fauna from the Pyrenean Mountains, composed of 32 species, presents variations according the different slopes. The oriental part (Alberes) shows the poorest composition. The deficit would become even more noticeable without the presence of the beech-grove of the Natural Reserve of "La Massane", which determines the greatest richness of the northern slope (19 species) versus the southern one (14 species). The present contribution, out coming from prospectings carried out for the last twenty years, analyses comparably for the first time small mammals communities -insectivores and rodents- of the French and Spanish slopes of the oriental part, emphasising their specificity inside the Pyrenean Chain. Succession of small mammals faunas has been studied after fire in diverse Mediterranean areas of Alberes massif. In a parallel way, the composition and dynamic of populations have been observed in witness unburnt zones. The quickness of recolonization depends on dispersion capacity, allochthonous migrations and demographical strategies of four species: C. russula, A. sylvaticus, M. spretus and E. quercinus. The shrew C. suaveolens is mentioned for the first time in Iberian Cataloni

“Implementación de una Aplicación Web Móvil con Geolocalización para el Catastro Comercial de la Empresa CABSELTV SAC - Yurimaguas, 2017”

La presente investigación desarrollada toma en cuenta el catastro comercial como una actividad importante para la Empresa CABSEL TV SAC - YURIMAGUAS, la cual determina en todo momento la cantidad de conexiones y especificaciones técnicas del servicio brindado a los usuarios del sector. El proceso presentaba deficiencias de información para el manejo de la misma de forma tanto técnica como comercial lo cual ocasionaba que la organización esté en problemas de desinformación periódicamente, así como en excesivo trabajo manual para organizar la información necesitada lo cual entorpecía el rápido accionar del personal del Área. Razón de ello es que se implementó un sistema web Móvil con Geolocalización que permita facilitar el trabajo en el área comercial y personal de campo, obteniéndose buenos resultados. Para ello se dimensionó el proceso en indicadores como Grado de Agilidad del proceso, Nivel de uso de tecnologías, Grado de Simplificación de procesos y Nivel de precisión de la información puesto que es e sumo interés la ubicación geográfica de cada conexión. El tipo investigación fue aplicada con un diseño Pre-experimental, evaluándose los cambios del proceso en el antes y después de la implementación del sistema web con Geolocalización. Para el recojo de información se tomó una muestra igual al de la población por ser una cantidad de 7 personas representadas por el personal de CABSEL TV SAC. Para ello se aplicó las técnicas de encuesta y análisis documental previo. Se concluye el estudio demostrando que el sistema web móvil influye eficientemente en el catastro comercial de la Empresa, para ello se empleó en los resultados la Estadística descriptiva e inferencial, siendo en esta última representada como una distribución del estudiante lo cual permitió aceptar la hipótesis alternativa

Contemplating Synergistic Algorithms for the NASA ACE Mission

ACE is a proposed Tier 2 NASA Decadal Survey mission that will focus on clouds, aerosols, and precipitation as well as ocean ecosystems. The primary objective of the clouds component of this mission is to advance our ability to predict changes to the Earth's hydrological cycle and energy balance in response to climate forcings by generating observational constraints on future science questions, especially those associated with the effects of aerosol on clouds and precipitation. ACE will continue and extend the measurement heritage that began with the A-Train and that will continue through Earthcare. ACE planning efforts have identified several data streams that can contribute significantly to characterizing the properties of clouds and precipitation and the physical processes that force these properties. These include dual frequency Doppler radar, high spectral resolution lidar, polarimetric visible imagers, passive microwave and submillimeter wave radiometry. While all these data streams are technologically feasible, their total cost is substantial and likely prohibitive. It is, therefore, necessary to critically evaluate their contributions to the ACE science goals. We have begun developing algorithms to explore this trade space. Specifically, we will describe our early exploratory algorithms that take as input the set of potential ACE-like data streams and evaluate critically to what extent each data stream influences the error in a specific cloud quantity retrieval

Colorectal cancer linkage on chromosomes 4q21, 8q13, 12q24, and 15q22

A substantial proportion of familial colorectal cancer (CRC) is not a consequence of known susceptibility loci, such as mismatch repair (MMR) genes, supporting the existence of additional loci. To identify novel CRC loci, we conducted a genome-wide linkage scan in 356 white families with no evidence of defective MMR (i.e., no loss of tumor expression of MMR proteins, no microsatellite instability (MSI)-high tumors, or no evidence of linkage to MMR genes). Families were ascertained via the Colon Cancer Family Registry multi-site NCI-supported consortium (Colon CFR), the City of Hope Comprehensive Cancer Center, and Memorial University of Newfoundland. A total of 1,612 individuals (average 5.0 per family including 2.2 affected) were genotyped using genome-wide single nucleotide polymorphism linkage arrays; parametric and non-parametric linkage analysis used MERLIN in a priori-defined family groups. Five lod scores greater than 3.0 were observed assuming heterogeneity. The greatest were among families with mean age of diagnosis less than 50 years at 4q21.1 (dominant HLOD = 4.51, α = 0.84, 145.40 cM, rs10518142) and among all families at 12q24.32 (dominant HLOD = 3.60, α = 0.48, 285.15 cM, rs952093). Among families with four or more affected individuals and among clinic-based families, a common peak was observed at 15q22.31 (101.40 cM, rs1477798; dominant HLOD = 3.07, α = 0.29; dominant HLOD = 3.03, α = 0.32, respectively). Analysis of families with only two affected individuals yielded a peak at 8q13.2 (recessive HLOD = 3.02, α = 0.51, 132.52 cM, rs1319036). These previously unreported linkage peaks demonstrate the continued utility of family-based data in complex traits and suggest that new CRC risk alleles remain to be elucidated. © 2012 Cicek et al

Constraining cloud lifetime effects of aerosols using A‐Train satellite observations

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95434/1/grl29404.pd

A network analysis to identify mediators of germline-driven differences in breast cancer prognosis.

Identifying the underlying genetic drivers of the heritability of breast cancer prognosis remains elusive. We adapt a network-based approach to handle underpowered complex datasets to provide new insights into the potential function of germline variants in breast cancer prognosis. This network-based analysis studies ~7.3 million variants in 84,457 breast cancer patients in relation to breast cancer survival and confirms the results on 12,381 independent patients. Aggregating the prognostic effects of genetic variants across multiple genes, we identify four gene modules associated with survival in estrogen receptor (ER)-negative and one in ER-positive disease. The modules show biological enrichment for cancer-related processes such as G-alpha signaling, circadian clock, angiogenesis, and Rho-GTPases in apoptosis

The ASTRO-H X-ray Observatory

The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions initiated by the Institute of Space and Astronautical Science (ISAS). ASTRO-H will investigate the physics of the high-energy universe via a suite of four instruments, covering a very wide energy range, from 0.3 keV to 600 keV. These instruments include a high-resolution, high-throughput spectrometer sensitive over 0.3-2 keV with high spectral resolution of Delta E < 7 eV, enabled by a micro-calorimeter array located in the focal plane of thin-foil X-ray optics; hard X-ray imaging spectrometers covering 5-80 keV, located in the focal plane of multilayer-coated, focusing hard X-ray mirrors; a wide-field imaging spectrometer sensitive over 0.4-12 keV, with an X-ray CCD camera in the focal plane of a soft X-ray telescope; and a non-focusing Compton-camera type soft gamma-ray detector, sensitive in the 40-600 keV band. The simultaneous broad bandpass, coupled with high spectral resolution, will enable the pursuit of a wide variety of important science themes.Comment: 22 pages, 17 figures, Proceedings of the SPIE Astronomical Instrumentation "Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray