994 resultados para Small red brocket


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2009, Volume 2, Number 2

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Se determinaron modelos estadísticos estimados por regresión lineal simple y múltiple que tratan de explicar la performance y geometría de la red.

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En el presente trabajo se muestran los resultados de selectividad para red tipo 450/120 de arrastre de fondo, empleada en el crucero de evaluación del recursos merluza.

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El objetivo del trabajo fin de Master consiste en el estudio de redes de sensores inalámbricos para las Smart Cities. En particular, se implementa una red inalámbrica (tecnología ZIGBEE como protocolo de comunicación inalámbrica con micrófonos como sensores, para recolectar niveles de ruido. Hemos elegido el Arduino como plataforma de cálculo para controlar cada nodo, y XBee como módulos de comunicación inalámbrico. La red sensorial cuenta con tres nodos sensores que capturan el ruido y lo envían a un nodo receptor, que hace de estación central encargado de monitorizar los niveles de ruido. Dicho coordinador está conectado mediante USB a un PC, donde podemos comprobar las medidas recibidas por el XBee. Finalmente estos datos se muestran en una interfaz gráfica en el computador conectado al coordinador. De esta forma, puede monitorizarse el nivel de ruido de tres lugares diferentes en tiempo real.

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Se presentaron los resultados de la modificación y adaptaciones de la red pelágica 124/1800 para la captura del recurso Vinciguerria.

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Durante este estudio se registraron valores de ecointegración y CPUE altos durante la noche, cuando los peces estaban más concentrados cerca de la superficie en una capa de 50 metros de profundidad.

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Se presentan los resultados de la prueba en el mar de un copo experimental para mantener peces vivos, adaptado y acoplado a la red Engel.

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Analiza el estudio realizado sobre el comportamiento de pesca de arrastre realizado entre puerto Pizarro y Chicama.

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Bronchiolitis obliterans (BO) following allogeneic haematopoietic stem cell transplantation (HSCT) affects peripheral airways. Detection of BO is presently delayed by the low sensitivity of spirometry. We examined the relationship between peripheral airway function and time since HSCT, and compared it with spirometry and clinical indices in 33 clinically stable allogeneic HSCT recipients. The following measurements were performed: lung function, exhaled nitric oxide, forced oscillatory respiratory system resistance and reactance, acinar (S(acin)) and conductive airways ventilation heterogeneity and lung clearance index (LCI) measured by multiple breath nitrogen washout. 22 patients underwent repeat visits from which short-term changes were examined. Median time post HSCT was 12 months. Eight patients were clinically diagnosed as having BO. In multivariate analysis, time since HSCT was predicted by S(acin) and forced expiratory volume in 1 s % predicted. 20 patients had abnormal S(acin) with normal spirometry, whereas none had airflow obstruction with normal S(acin). S(acin) and LCI were the only measures to change significantly between two visits, with both worsening. Change in S(acin) was the only parameter to correlate with change in chronic graft-versus-host disease grade. In conclusion, peripheral airways ventilation heterogeneity worsens with time after HSCT. S(acin) may be more sensitive than spirometry in detecting BO at an early stage, which needs confirmation in a prospective study.

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Se presentan los resultado del análsis del ictioplancton durante el Crucero, al emplear dos tipos de muestreadores, la Red Calvet y el equipo Cufes.

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Lipid reserves are a particularly important attribute of fishes because they have a large influence on growth, reproduction and survival. This study analyses the lipid content of red mullet (Mullus barbatus) pre-spawners in three different areas of the northwestern Mediterranean in relation to trawling activities and river runoff. The muscle lipid was considered as an indicator of the somatic condition of individuals whilst the gonad lipid was used as a proxy of the energy invested in reproduction. The results show that fish with the highest muscle lipid levels inhabited the area where fishing impact was lowest. Since the abundance and biomass of polychaetes, which represent the main food source for red mullet, were found to be lower in trawled zones than in unfished ones, we suggest that differences in the muscle lipid levels between areas might be attributed to variation in prey abundance in relation to fishing impact. However, no impact of river runoff on lipid reserves of red mullet was observed. The results also show that muscle and gonad lipid reserves are not related to each other during pre-spawning