709 research outputs found
Las razas berrendas en el área de Despeñaperros
Las razas Berrenda en Negro y Berrenda en Colorado son razas autóctonas, rústicas y maternales que suelen usarse para cruce industrial, se encuentran en peligro de extinción, al estar disminuyendo sus efectivos, y mezclándose, cada vez más, entre sí y con otras razas. El objetivo de este trabajo fue mostrar el estado actual y el grado de diferenciación de los bovinos Berrendo en Negro y Berrendo en Colorado localizados en el entorno de Despeñaperros en base a las características externas que presentan tanto a partir de sus caracteres zoométricos, como morfológicos y fanerópticos. Para ello se han muestreado un total de 160 reproductoras distribuidas en 13 rebaños, la mayoría de los cuales criaban conjuntamente ambas razas Berrendas. Para los cálculos se utilizó el programa estadístico Statistical 6.0 para Windows, realizándose pruebas T de diferenciación entre razas para las variables zoométricas y pruebas ML_2 para los cualitativos. Las variables zoométricas Alzada a la Cruz (ACR) y Diámetro Bicostal (LB) para la Berrenda en Negro y ACR para la Berrenda en Colorado mostraron valores inferiores a los definidos por el estándar de la raza. Para los caracteres cualitativos sección y forma del cuerno, tamaño de las orejas, longitud del cuello, inclinación de la grupa, finura de la cola y nalga, en ambas razas, existen discrepancias entre lo obtenido y lo dictaminado por el estándar de la raza. Se han encontrado diferencias significativas entre ambas razas tanto para el desarrollo del cuerno, como para el perfil cefálico, tamaño de la ubre, vientre y nalga, con un nivel de significación de p<0.05
Tratamiento asistido por artroscopia de las fracturas de radio distal
ResumenLa artroscopia proporciona una valoración directa de la superficie articular y permite detectar lesiones asociadas en las fracturas de la extremidad distal del radio. Su incorporación al tratamiento de estas fracturas ha supuesto un mejor control de la reducción de los trazos articulares, pero se trata de una técnica compleja que aún no está generalizada entre la mayoría de los cirujanos ortopédicos y/o de la mano y la muñeca.Se realiza una revisión y actualización de las ventajas, las indicaciones, las claves técnicas, los resultados y los datos científicos de su utilidad para el tratamiento de las fracturas del radio distal.AbstractArthroscopy provides a direct evaluation of the joint surface and enables associated injuries to be detected in fractures of the distal end of the radius. Although its incorporation into the treatment of these fractures has led to a better control in the reduction of joint traces, it is a complicated technique that is still not in general use by the majority of orthopaedic and/or hand and wrist surgeons.A review is presented here, as well as an update of the advantages, indications, the key techniques, results, and scientific data of its use in the treatment of distal radius fractures
Determining and mapping species sensitivity to trawling impacts: the BEnthos Sensitivity Index to Trawling Operations (BESITO)
Applying an ecosystem approach requires a deep and holistic understanding of interactions between human activities and ecosystems. Bottom trawling is the most widespread physical human disturbance in the seabed and produces a wide range of direct and indirect impacts on benthic ecosystems. In this work, we develop a new index, the BEnthos Sensitivity Index to Trawling Operations (BESITO), using biological traits to classify species according to their sensitivity to bottom trawling. Seventy-nine different benthic taxa were classified according to their BESITO scores in three groups. The effect of trawling on the relative abundance of each group (measured as biomass proportion) was analysed using General Additive Models (GAMs) in a distribution model framework. The distribution of the relative biomass of each group was mapped and the impact of trawling was computed. Species with the lowest BESITO score (group I) showed a positive response to trawling disturbance (opportunistic response) whereas species with values higher than 2 (group III) showed a negative response (sensitive response). Species with a BESITO score of 2 did not show a significant response to the pressure (tolerant response). Trawling disturbance reduced relative biomass of sensitive species by 31% across the study area. This value increased to 46% when shelf-break was considered in isolation and reached values of 59.6% in the most impacted habitat (deep-sea muddy sands). The new index classified successfully the analysed species according to their sensitivity to trawling allowing modeling the impact of trawling disturbance on sensitive species, without the masking effect of opposed responses
Sistema de alerta de riesgos en hogares mediante SMS
En este artículo se plantea un sistema de control y alerta de riesgos residencial que permite prevenir, mitigar o reducir pérdidas humanas o económicas, como consecuencias de eventos como, incendio, fuga de gas, inundación y accesos no permitidos en hogares, a través del uso de un sistema de transmisión de alerta por medio de mensajes de texto aun teléfono celular. En el diseño de la solución obtenida se analizaron, identificaron y evaluaron variables que puedan generar un gran impacto dentro de un domicilio, para que mediante el diseño de un prototipo estas variables sean sensadas, y ante un eventual riesgo se transmiten empleando un modem GSM que permita no solo informar el evento sino tomar acciones de control, en forma remota, dependiendo del evento presentado
Spatial assessment of benthic habitats vulnerability to bottom fishing in a Mediterranean seamount
Physical damage caused by the mechanical impact of bottom fishing gears on epibenthic community can reduce the biomass and coverage of habitat-forming species as well as the richness and diversity of the rest of the associated community. A practical development of a methodology for spatially assessing the potential degree of disturbance that benthic habitats suffered as a consequence of trawling and long-lining was carried out using a seamount located within a marine Natura 2000 site in the western Mediterranean as a case of study. By jointly assessing the extent of the impact and mapping the sensitivity of all the habitats to these fishing activities, vulnerability and disturbance per benthic habitat and pressure type was evaluated. Habitat sensitivity and fishing effort were combined using a disturbance matrix which categorize grid cells in 9 different levels of disturbance. Additionally, different thresholds of probability of presence of the different habitats obtained from distribution models were used to identify priority conservation and potential recovery. Around 50% of the area was disturbed by fishing and all habitats, both biogenic and non-biogenic, were subjected to fishing. Most of the trawling effort was carried out on soft bathyal substrates while the percentage of longlining effort carried out on hard bottoms was relatively higher than for trawling. Biogenic habitats showed significantly greater sensitivity to both trawling and longlining than non-biogenic habitats. Disturbed, priority conservation and potential recovery areas were identified and mapped in order to inform marine spatial planning.En prensa1,86
Vinhos que pensam - parte ii|iii: utilização da condutividade elétrica aparente do solo na instalação e gestão das culturas: exemplificação na vinha
Vinhos que pensam - parte ii|iii: utilização da condutividade elétrica aparente do solo na instalação e gestão das culturas: exemplificação na vinh
Assessment of Tremor Severity in Patients with Essential Tremor Using Smartwatches
[Abstract] This paper presents a classification model for the automatic quantification of tremor severity in patients with essential tremor (ET). The system is based on the signals measured by two commercial smartwatches that the patients wear on their wrist and ankle. The smartwatches register acceleration and angular velocity in these body segments. A set of nine tremor features were used to train the classification algorithm. The proposed algorithm is based on a C4.5 decision tree classifier. It is able to assess rest and kinetic (postural or action) tremor. The method was evaluated using data collected from thirty-four patients with ET. The algorithm classifies the severity of tremor in five levels 0-4 corresponding to those in the Fahn-Tolosa-Marin tremor rating scale with a 94% accuracy. The method can be implemented in a networked platform for the remote monitoring and assessment of movement disorders such as ET or Parkinson’s disease.Ministerio de Economía, Industria u Competitividad; RTC-2015-3967-1Ministerio de Economía, Industria u Competitividad; DPI2015-68664-C4-1-RMinisterio de Economía, Industria u Competitividad; RTC-2015-4327-
- …