305,231 research outputs found
E.D.A.R. de Biescas
No full textEl objeto del proyecto de la E.D.A.R de Biescas es definir las obras e instalaciones necesarias para depurar las aguas residuales de dicho municipio, tanto de la localidad del mismo nombre como de Gavín, situado al sur-este de Biescas, y también de industria de la zona conectada a la red. Se realiza una previsión de la vida útil de la estación depuradora de 25 años, es decir, hasta 2039. En el presente proyecto se desarrollan y definen las obras e instalaciones que la nueva estación depuradora precisa para la correcta depuración de las aguas residuales y su restitución al río Gallego. La parcela, como lugar del emplazamiento, está situada en una zona cercana a dicho río, lo suficientemente alejada de los núcleos habitados de Biescas y Gavín principalmente en un terrero de pendiente nula, y con buenas y factibles conexiones exteriore
Ovine lentivirus-associated leucomyelitis in naturally infected North American sheep.
No full textLeucomyelitis was the predominant feature in four North American adult sheep (cases 1–4) with ovine
lentivirus (OvLV) infection. All four animals were OvLV-seropositive and a syncytogenic virus consistent
with OvLV was isolated from the brain of case 3 and the lungs of case 4. Clinically, the sheep had dyspnoea
and neurologic signs of varying severity. Changes in the central nervous system included asymmetrical
meningoleucomyelitis with white matter degeneration in all four sheep and scattered foci of
leucoencephalitis in periventricular, subependymal and other white matter areas of the brain of the
three animals (cases 1, 2 and 4) for which the brain was examined. In the lungs of two sheep (cases 3 and
4), there was lymphoid interstitial pneumonia with marked lymphoid hyperplasia. The viral capsid
antigen (p25) was detected by immunohistochemistry (IHC) in sections of lung, brain and spinal cord of
the four sheep and OvLV RNA was detected by in-situ hybridization (ISH) in lung and spinal cord
samples. The results confirm the usefulness of the IHC and ISH for differential diagnosis of visna
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Land subsidence measurement with SAR interferometric data
No full textThe paper focuses on the measurement of land subsidence and, more generally, of land deformation phenomena using the differential interferometric SAR (Synthetic Aperture Radar) technique (DInSAR). The paper begins with a concise description of the properties of the differential interferometric phase, which represents the information source for the estimation of the terrain deformation phenomena. Then it discusses some characteristics of the DInSAR procedure implemented by the authors. In particular, the interferometric SAR processing and a least squares adjustment procedure to estimate the terrain deformation are described. The second part of the paper illustrates two applications of the proposed procedure, which have been tested in two test sides located in Catalonia (Spain). The first one is a screening analysis, whose main goal is the detection of unknown subsidence phenomena over large areas, based on a limited set of SAR images. The second one is a quantitative analysis of a urban subsidence of small spatial extent, which was based on two independent ascending and descending SAR datasets
Estudio Meteorológico de la situación del 7 de Agosto de 1996 (Biescas)
No full textMódulos de enseñanza de meteorología que forma parte de la Biblioteca de Módulos TEMPO.El objeto del presente estudio, es conocer e intentar explicar los fenómenos meteorológicos y las precipitaciones que se produjeron en la zona de Biescas la tarde del 7 de agosto de 1996. Las tormentas que tuvieron lugar en la zona de Biescas y las precipitaciones asociadas ocasionaron una avenida o inundación repentina que produjo daños en infraestructuras y servicios, accesos a Aso, Yosa y Betés, carretera nacional y en los suministros de electricidad y teléfono, originandose también abundantes daños materiales en bienes particulares. Pero las consecuencias más graves fueron los daños personales producidos en el camping "Las Nieves" en el que se contabilizaron 86 víctimas mortales y 93 personas necesitaron asistencia en distintos hospitales y centros sanitarios, lo que convierte a este episodio en el más grave de los ocurridos en España durante los últimos años
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Ground motion phenomena in Caltanissetta (Italy) investigated by InSAR and geological data integration
No full textUrban areas are frequently affected by ground instabilities of various origins. The location of urban zones
affected by ground instability phenomena is crucially important for hazard mitigation policies. Satellite-based
Interferometric Synthetic Aperture Radar (InSAR) has demonstrated its remarkable capability to detect and
quantify ground and building motion in urban areas, especially since the development of Advanced
Differential Interferometric SAR techniques (A-DInSAR). In fact, the high density of re.ectors like buildings
and infrastructures in urban areas improves the quality of the InSAR signal, allowing sub-centimetric
displacements to be reliably detected. The A-DInSAR techniques allow urban zones affected by ground
deformation to be located and mapped, but clearly they are not able to point out the causes of the instability
phenomena. These can only be highlighted by an integrated analysis of multidisciplinary data, like geological,
geotechnical, SAR interferometric and historical data. The overlay of these data, which is possible within a
Geographic Information System (GIS), is a useful tool to identify ground motion phenomena affecting urban
zones. In this study we apply this kind of approach to Caltanissetta, a provincial capital in Sicily (Italy), where
local damage has been detected. The reconstruction of the local near-surface geology shows the presence of
zones affected by local natural hazard factors, essentially due to the local presence of soils with poor
mechanical properties or swelling soils, high topographic gradients and steep slopes on loose soils. Processing
17 ASAR-ENVISAT SAR images covering the time interval October 2002.December 2005 by means of an ADInSAR
procedure, the Caltanissetta deformation map has been realized. It shows that most of the city is
stable, with the exception of three zones, situated in the northwestern, northeastern and southern parts of the
city, respectively. Two of them, characterized by high topographic gradients and steep slopes on sandy soils,
are affected by subsidence ground motion. An uplift motion is recognized in the other zone, characterized by
the local presence of expansible clays. Geotechnical swelling tests carried out on them have shown a swelling
behavior. On site surveys have highlighted the presence of damage in the zones affected by ground motion.
© 2008 Elsevier B.V. All rights reserved
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
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