443 research outputs found
La Innovación Educativa en Contextos Críticos y su Contribución al Desarrollo Comunitario
Este proyecto parte del supuesto de que las instituciones educativas tienen un papel
determinante en la articulación y en el desarrollo de una comunidad social y que la
comunidad puede contribuir igualmente al desarrollo y la mejora de los centros de
enseñanza. Su propósito principal es facilitar la apropiación o recuperación por parte de
comunidades sociales afectadas por condiciones socioeconómicas críticas, de sus
instituciones educativas como recurso y motor básico del desarrollo. Para ello se plantea
estudiar los vínculos que los centros educativos mantienen con la comunidad y fundamentar
estrategias de innovación educativa que contribuyan al desarrollo de estos vínculos
Dos hipótesis generales constituyen el punto de partida: (1) El desarrollo de la escuela y la
mejora de la calidad de la educación se proyectan y al mismo tiempo se ven influidos por el
desarrollo comunitario y que tanto el desarrollo de la escuela como el de la comunidad
pueden potenciarse mediante estrategias que permitan coordinar los esfuerzos en ambos
sentidos; y (2) El asesoramiento externo a los procesos de mejora y de innovación en la
educación podrá contribuir a su éxito si consiguen movilizar los recursos internos de las
instituciones educativas
Two-dimensional distributed feedback lasers with thermally-nanoimprinted perylenediimide-containing films
Two-dimensional (2D) distributed feedback (DFB) lasers with gratings imprinted by thermal nanoimprint lithography on the active film are reported. They show thresholds for lasing of ∼10 kW/cm2, similar to the most efficient imprinted DFB lasers reported; and long operational lifetimes (under ambient conditions) of ∼12 × 104 pump pulses. The key for their successful operation has been the selection of a highly efficient and stable dye, perylene orange (PDI-O), and a proper matrix to host it, the fluoro-modified thermoplastic resist mr-I7030R, which has enabled 2D imprinting while preserving the dye optical properties. The use of the UV-curable resist SU8 as an alternative matrix for PDI-O to be imprinted by combined nanoimprint and photolithography was also investigated, and was concluded to be unsuccessful due to severe photoluminescence quenching. By replacing PDI-O with Rhodamine 6G, lasers with reasonable thresholds, but with significantly inferior operational lifetimes in comparison to PDI-O/mr-I7030R devices, were obtained.We thank support from the Spanish Government (MINECO) and the European Community (FEDER) through Grants MAT2011-28167-C02 and MAT2015-66586-R, as well as to the University of Alicante. M.M-V. has been partly supported by a MINECO FPI fellowship (no. BES-2009-020747) and by a Junta de Castilla y León grant (no. SA046U16)
Use of Microarray Technology to Improve DNA Vaccines in Fish Aquaculture - The Rhabdoviral Model
A sandwich ELISA to detect VHSV and IPNV in turbot
Abstract: The recent demonstration that reared turbot (Scophthalmus maximus L) is a natural host for salmonid rhabdoviruses has made their rapid detection relevant to these fish species. A unique protocol to select and use non-competitive monoclonal antibodies (Mabs) for two high-sensitivity sandwich ELISAs has been developed to detect both infectious pancreatic necrosis virus (IPNV) and viral haemorrhagic septicaemia virus (VHSV) in turbot kidney extracts to assess the possibility of using them in field diagnosis. For maximum sensitivity, turbot kidney extracts can be two-fold diluted with high-ionic strength buffers and assayed for the presence of the major viral proteins (VMS rhabdovirus nucleoprotein N/Nx and/or IPN birnavirus protein VP3). The use of control plates coated with irrelevant mouse antibodies (IgG1 and IgG2a) in parallel ELISAs allows for a precise estimation of possible false positives. Turbot kidney extracts with low levels of virus might now be assayed directly without using cell culture, with high precision and in a short time during the acute phase of these viral diseases in reared turbot.Acuidoro, SL; INI
Expression and antiviral activity of a β-defensin-like peptide identified in the rainbow trout (Oncorhynchus mykiss) EST sequences
The in silico identification of a β-defensin-like peptide sequence (omBD-1) in the rainbow trout (Oncorhynchuss mykiss) database of salmonid EST is reported here. We have studied the transcript expression of this β-defensin-like sequence in different organs and expressed the recombinant peptide in a fish cell line. Finally, we have demonstrated the in vitro antiviral activity of the recombinant trout β-defensin-like peptide against viral haemorrhagic septicaemia rhabdovirus (VHSV), one of the most devastating viruses for worldwide aquaculture. Thus, the resistance to VHSV infection of EPC cells transfected with pMCV 1.4-omBD-1 has been shown. Since EPC cells transfected with omBD-1 produced acid and heat stable antiviral activity and up regulation of Mx, a type I IFN-mediated mechanism of antiviral action is suggested. To our knowledge, this is the first report showing biological activity of a β-defensin-like peptide from any fish
Development of a Kinect-based exergaming system for motor rehabilitation in neurological disorders
The development of videogames for physical therapy, known as exergames, has gained much interest in the last years. In this work, a system for rehabilitation and clinical evaluation of neurological patients is presented. The Microsoft Kinect device is used to track the full body of patients, and three games were developed to exercise and assess different aspects of balance and gait rehabilitation. The system provides visual feedback by means of an avatar that follows the movements of the patients, and sound and visual stimuli for giving orders during the experience. Also, the system includes a database and management tools for further analysis and monitoring of therapies. The results obtained show, on the one side, a great reception and interest of patients to use the system. On the other side, the specialists considered very useful the data collected and the quantitative analysis provided by the system, which was then adopted for the clinical routine.Fil: Estepa, A.. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; ArgentinaFil: Spontón Píriz, Sergio Gustavo. Centro de Rehabilitación E Investigación:dr. L.maradona; ArgentinaFil: Albornoz, Enrique Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigación en Señales, Sistemas e Inteligencia Computacional. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas. Instituto de Investigación en Señales, Sistemas e Inteligencia Computacional; ArgentinaFil: Martínez, César Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigación en Señales, Sistemas e Inteligencia Computacional. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas. Instituto de Investigación en Señales, Sistemas e Inteligencia Computacional; Argentin
Flood Risk of Metro Manila Barangays: A GIS Based Risk Assessment Using Multi-Criteria Techniques
This study examined the flood prone areas within Metro Manila to find out their degrees of disaster risk. More specifically, the study considered the population densities of Metro Manila barangays, the smallest political units of the country, the gender and age population, the structural materials and the recorded depths of flooding. Geographic Information System (GIS) using multi-criteria techniques was the tool of analysis of the study. Projecting the population density of each barangay, the children, elderly and women populations to 2020 and 2030 and simultaneously examining the recorded depths of its flood waters and existing structural materials, the study identified the barangays that will be at high risk by 2020 and 2030. Although the study is limited to population data and physical characteristics of barangays, the findings may be useful to urban and regional planners and government agencies involved in disaster risk reduction and mitigation management. The study can be integrated in future development plans of specific areas and be used to guide future flood control measures. Finally, the study may be considered by other countries in their analysis of similar flooding experiences. Keywords: Barangay, Flood Risk, Assessment, Geographic Information System, Scenari
Zebrafish fin immune responses during high mortality infections with viral haemorrhagic septicemia rhabdovirus. A proteomic and transcriptomic approach
<p>Abstract</p> <p>Background</p> <p>Despite rhabdoviral infections being one of the best known fish diseases, the gene expression changes induced at the surface tissues after the natural route of infection (infection-by-immersion) have not been described yet. This work describes the differential infected versus non-infected expression of proteins and immune-related transcripts in fins and organs of zebrafish <it>Danio rerio </it>shortly after infection-by-immersion with viral haemorrhagic septicemia virus (VHSV).</p> <p>Results</p> <p>Two-dimensional differential gel electrophoresis detected variations on the protein levels of the enzymes of the glycolytic pathway and cytoskeleton components but it detected very few immune-related proteins. Differential expression of immune-related gene transcripts estimated by quantitative polymerase chain reaction arrays and hybridization to oligo microarrays showed that while more transcripts increased in fins than in organs (spleen, head kidney and liver), more transcripts decreased in organs than in fins. Increased differential transcript levels in fins detected by both arrays corresponded to previously described infection-related genes such as complement components (<it>c3b, c8 </it>and <it>c9</it>) or class I histocompatibility antigens (<it>mhc1</it>) and to newly described genes such as secreted immunoglobulin domain (<it>sid4</it>), macrophage stimulating factor (<it>mst1</it>) and a cluster differentiation antigen (<it>cd36</it>).</p> <p>Conclusions</p> <p>The genes described would contribute to the knowledge of the earliest molecular events occurring in the fish surfaces at the beginning of natural rhabdoviral infections and/or might be new candidates to be tested as adjuvants for fish vaccines.</p
An assessment of existing models for individualized breast cancer risk estimation in a screening program in Spain
Background: The aim of this study was to evaluate the calibration and discriminatory power of three predictive
models of breast cancer risk.
Methods: We included 13,760 women who were first-time participants in the Sabadell-Cerdanyola Breast Cancer
Screening Program, in Catalonia, Spain. Projections of risk were obtained at three and five years for invasive cancer
using the Gail, Chen and Barlow models. Incidence and mortality data were obtained from the Catalan registries.
The calibration and discrimination of the models were assessed using the Hosmer-Lemeshow C statistic, the area
under the receiver operating characteristic curve (AUC) and the Harrell’s C statistic.
Results: The Gail and Chen models showed good calibration while the Barlow model overestimated the number of
cases: the ratio between estimated and observed values at 5 years ranged from 0.86 to 1.55 for the first two models
and from 1.82 to 3.44 for the Barlow model. The 5-year projection for the Chen and Barlow models had the highest
discrimination, with an AUC around 0.58. The Harrell’s C statistic showed very similar values in the 5-year projection
for each of the models. Although they passed the calibration test, the Gail and Chen models overestimated the
number of cases in some breast density categories.
Conclusions: These models cannot be used as a measure of individual risk in early detection programs to
customize screening strategies. The inclusion of longitudinal measures of breast density or other risk factors in joint
models of survival and longitudinal data may be a step towards personalized early detection of BC.This study was funded by grant PS09/01340 and The Spanish Network on Chronic Diseases REDISSEC (RD12/0001/0007) from the Health Research Fund (Fondo de Investigación Sanitaria) of the Spanish Ministry of Health
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