35 resultados para Arrecifes de coral
Resumo:
Tanto el Convenio Europeo relativo a los Derechos Humanos y la Biomedicina, como la Ley 41/2002 del 14 de noviembre, recogenlas ideas centrales de la teoría del consentimiento informado: el consentimiento como reflejo y ejercicio básico de la autonomía del paciente y la información como requisito indispensable para ese ejercicio. Al consentimiento informado en endoscopia se refiere Benigno Acea, cirujano y miembro del Comité de Ética Asistencial del Complejo Hospitalario Universitario de A Coruña envarios artículos. En ellos defiende la tesis de que el endoscopista está ética y legalmente obligado a informar al paciente y a recabar su consentimiento informado por escrito y que, por tanto, es necesario organizar en los centros sanitarios una consulta previa a la realización de la endoscopia similar a la instaurada para la anestesia. Se trata aquí de analizar esta propuesta al hilo de la clara distinción que la Ley 41/2002 establece entre el derecho de información sanitaria, que regula en el capítulo II, y el derecho al consentimientoinformado, que regula en el capítulo IV bajo el epígrafe del respeto a la autonomía delpaciente, similar a la instaurada para la anestesia. Se trata aquí de analizar esta propuesta al hilo de la clara distinción que la Ley 41/2002 establece entre el derecho de información sanitaria, que regula en el capítulo II, y el derecho al consentimientoinformado, que regula en el capítuloIV bajo el epígrafe del respeto a la autonomía del paciente.
Resumo:
Aquest projecte s'emmarca dins l'estudi i aplicació de la creativitat i la cultura mitjançant la difusió musical als àmbits de la divulgació i a l'articulació de programes de concert per part de possibles entitats que poguessin estar interessades en aprofundir i difondre al públic en general, els repertoris, autors i estils de la música coral que han estat a cavall d'ambdós territoris: Catalunya i França, al llarg de la història.
Resumo:
Durante el 'Biarritziense' superior y el Priaboniense, la sedimentación en el Eoceno autóctono de Catalunya, adquiere caracteres deltaicos acumulándose los sedimentos en forma de lóbulos deltaicos que translapan sucesivamente y progradan hacia el interior de la cuenca. Cuando los canales distributarios que originan a estos lóbulos son abandonados, se produce un retrabajamiento de sus materiales por la acción marina (oleaje y posiblemente mareas). Es en este episodio cuando, sobre la morfologia dcltaica heredada, se desarrollaron con mucha frecuencia arrecifes de corales y algas rojas que murieron al depositarse sobre ellos los materiales silicoclasticos procedentes de la progradación de un nuevo lóbulo deltacio. Una excepción la constituye el arrecife de Sant Bartomeu del Grau, resultante de la superposición de dos periodos de crecimiento arrecifal, cuya muerte guarda relación, en cada caso, con las primeras etapas de sedimentación evaporitica de la Cuenca evaporitica central catalana. El mecanismo de cierre para este extremo de la cuenca evaporitica se interpreta originado por el estrangulamiento de la misma por la acción de los lóbulos deltaicos procedentes de los bordes Sur y Norte de la cuenca. El estudio cronoestratigráfico efectuado corrobora al modelo paleogeográfico que se expone, el cual, presupone una conexión «mediterránea» por el Emporda durante el Priaboniense.
Resumo:
Se cita por primera vez el hallazgo de un coral colonia en Montjuich, Thegioastrea multisepta (SISMONDA) y se estudian las posibles causas de la rareza de este tipo de organismos en este yacimiento
Resumo:
Most structure-building organisms in rocky benthic communities are surface-dependent because their energy inputs depend mainly on the surface they expose to water. Two photosynthetic strategies, divided into calcareous and non calcareous algae, strict suspension-feeders and photosynthetic suspension feeders (e.g. hermatypic corals) are the four main strategies evolutively acquired by benthic organisms. Competition between those strategies occur in relation to productivity of the different species, in such a way that, for given environmental conditions, species with a higher growth (P/B ratio) would dominate. At a worldwide scale, littoral marine benthos can he considered to fit into the four fields defined by two main axes: the first, relates to productivity and relies atrophic and oligotrophic waters and the second is defined by the degree of environmental variability or seasonality (from high to low). Coral reefs (marine ecosystems dominated by photosynthetic suspension feeders) develop in the space of oligotrophic areas with low variability, while kelp beds (marine ecosystem dominated by large, non calcareous algae) are to be found only in eutrophic places with a high variability. The space of eutrophic waters with a low variability do not has specially adapted, high structured, benthic marine ecosystems, and in these conditions opportunistic algae and animals predominate. Finally, photophilic mediterranean benthos -devoid of kelps and without hermatypic corals- typifies the field of oligotrophic areas with high variability; in its more genuine aspect, Mediterranean benthos is represented by small algae with a high percentage of calcareous thallii. In all cases strict suspension-feeders compete successfully with photosynthetic organisms only in situations of low irradiances or very high inputs of POM. In its turn, Mediterranean rocky benthos, in spite of its relative uniformity, is geographically organized along the same axes. The Gulf of Lions and the insular bottoms (Balearic Islands, for example) would correspond to the extremes of eutrophic-high variability areas and oligotrophic-low variability areas, respectively. Irradiance, nutrient and POM concentration, and hydrodynamism are the three variables which mainly affect the distribution of the different surface-dependent strategies, and thus, these parameters are of paramount interest for understanding the trophic structure of Mediterranean benthic communities. In environments non limited by light, nutrient availability, defined as the product between nutrient -POM concentration and hydrodynamism, states the dominance of calcareous versus non calcareous algae. Calcareous algae dominate in oligotrophic waters while non-calcareous algae dominate in moderately eutrophic waters. In light-limited environments, passive suspension feeders (octocorallaria, gorgonians) become dominant species if POM availability is enhanced by a high hydrodynamism (strong currents); in waters with a low charge of POM organisms of other groups, mainly active suspension feeders, predominate (sponges, bryozoans, scleractiniarians). In any case, there always exists a very variable bathymetric zone, depending on light attenuation and nutrient-POM availability, where encrusting calcareous algae strongly compete with suspension feeders (coralligenous).
Resumo:
«La romanística no tiene complejos» (p. 541). La penúltima frase del texto de Roger Wright, así como del conjunto de textos de esta obra coral en homenaje a Carmen Pensado, motiva el título del libro, que su editor, Fernando Sánchez Miret, personaliza en la figura de la homenajeada, «Carmen Pensado: Una romanista sin complejos»
Resumo:
Este trabajo analiza las características de los seis personajes obesos que protagonizan Gordos (2009) de Daniel Sánchez Arévalo. Se trata de una obra coral que gira alrededor de un grupo de terapia y cuyo objetivo más importante es que los participantes comprendan los sentimientos y emociones que esconden bajo su obesidad. En primer lugar se repasa la prevalencia de esta enfermedad crónica, compleja y multifactorial que ha sido considerada por la OMS como una epidemia del siglo XXI. A continuación se comentan los rasgos más importantes de los protagonistas así como su evolución en el guión cinematográfico. Posteriormente se resumen los factores determinantes, la clínica y los tratamientos de los personajes. Luego se detallan aspectos relacionados al rodaje de Gordos. Finalmente se indican algunas de las posibles aplicaciones de la película en la docencia de los profesionales de la salud y otros colectivos.
Resumo:
Este trabajo analiza las características de los seis personajes obesos que protagonizan Gordos (2009) de Daniel Sánchez Arévalo. Se trata de una obra coral que gira alrededor de un grupo de terapia y cuyo objetivo más importante es que los participantes comprendan los sentimientos y emociones que esconden bajo su obesidad. En primer lugar se repasa la prevalencia de esta enfermedad crónica, compleja y multifactorial que ha sido considerada por la OMS como una epidemia del siglo XXI. A continuación se comentan los rasgos más importantes de los protagonistas así como su evolución en el guión cinematográfico. Posteriormente se resumen los factores determinantes, la clínica y los tratamientos de los personajes. Luego se detallan aspectos relacionados al rodaje de Gordos. Finalmente se indican algunas de las posibles aplicaciones de la película en la docencia de los profesionales de la salud y otros colectivos.
Resumo:
Resveratrol is a polyphenol that is mainly found in grapes and red wine and has been reported to be a caloric restriction (CR) mimetic driven by Sirtuin 1 (SIRT1) activation. Resveratrol increases metabolic rate, insulin sensitivity, mitochondrial biogenesis and physical endurance, and reduces fat accumulation in mice. In addition, resveratrol may be a powerful agent to prevent age-associated neurodegeneration and to improve cognitive deficits in Alzheimer's disease (AD). Moreover, different findings support the view that longevity in mice could be promoted by CR. In this study, we examined the role of dietary resveratrol in SAMP8 mice, a model of age-related AD. We found that resveratrol supplements increased mean life expectancy and maximal life span in SAMP8 and in their control, the related strain SAMR1. In addition, we examined the resveratrol-mediated neuroprotective effects on several specific hallmarks of AD. We found that long-term dietary resveratrol activates AMPK pathways and pro-survival routes such as SIRT1 in vivo. It also reduces cognitive impairment and has a neuroprotective role, decreasing the amyloid burden and reducing tau hyperphosphorylation.
Resumo:
Resveratrol is a polyphenol that is mainly found in grapes and red wine and has been reported to be a caloric restriction (CR) mimetic driven by Sirtuin 1 (SIRT1) activation. Resveratrol increases metabolic rate, insulin sensitivity, mitochondrial biogenesis and physical endurance, and reduces fat accumulation in mice. In addition, resveratrol may be a powerful agent to prevent age-associated neurodegeneration and to improve cognitive deficits in Alzheimer's disease (AD). Moreover, different findings support the view that longevity in mice could be promoted by CR. In this study, we examined the role of dietary resveratrol in SAMP8 mice, a model of age-related AD. We found that resveratrol supplements increased mean life expectancy and maximal life span in SAMP8 and in their control, the related strain SAMR1. In addition, we examined the resveratrol-mediated neuroprotective effects on several specific hallmarks of AD. We found that long-term dietary resveratrol activates AMPK pathways and pro-survival routes such as SIRT1 in vivo. It also reduces cognitive impairment and has a neuroprotective role, decreasing the amyloid burden and reducing tau hyperphosphorylation.
Resumo:
L'objecte d'estudi d'aquest article és la relació entre l'educació física i l'aprenentatge de la llengua anglesa, per mitjà de l'enfocament educatiu AICLE (CLIL, en anglès), concretat en el programa Mou-te i aprèn. Pel que fa a l'educació física es fonamenta en la metodologia d'instrucció directa: global pura, anàlisi progressiu i anàlisi seqüencial, complementada amb estratègies d'aprenentatge cooperatiu. L'educació física és una forma diferent i excel-lent d'aprendre la llengua. La combinació de les diferents metodologies i tècniques són molt efectives per millorar alhora el llenguatge, la motricitat i la salut.
Resumo:
Resveratrol is a polyphenol that is mainly found in grapes and red wine and has been reported to be a caloric restriction (CR) mimetic driven by Sirtuin 1 (SIRT1) activation. Resveratrol increases metabolic rate, insulin sensitivity, mitochondrial biogenesis and physical endurance, and reduces fat accumulation in mice. In addition, resveratrol may be a powerful agent to prevent age-associated neurodegeneration and to improve cognitive deficits in Alzheimer's disease (AD). Moreover, different findings support the view that longevity in mice could be promoted by CR. In this study, we examined the role of dietary resveratrol in SAMP8 mice, a model of age-related AD. We found that resveratrol supplements increased mean life expectancy and maximal life span in SAMP8 and in their control, the related strain SAMR1. In addition, we examined the resveratrol-mediated neuroprotective effects on several specific hallmarks of AD. We found that long-term dietary resveratrol activates AMPK pathways and pro-survival routes such as SIRT1 in vivo. It also reduces cognitive impairment and has a neuroprotective role, decreasing the amyloid burden and reducing tau hyperphosphorylation.
Resumo:
Resveratrol is a polyphenol that is mainly found in grapes and red wine and has been reported to be a caloric restriction (CR) mimetic driven by Sirtuin 1 (SIRT1) activation. Resveratrol increases metabolic rate, insulin sensitivity, mitochondrial biogenesis and physical endurance, and reduces fat accumulation in mice. In addition, resveratrol may be a powerful agent to prevent age-associated neurodegeneration and to improve cognitive deficits in Alzheimer's disease (AD). Moreover, different findings support the view that longevity in mice could be promoted by CR. In this study, we examined the role of dietary resveratrol in SAMP8 mice, a model of age-related AD. We found that resveratrol supplements increased mean life expectancy and maximal life span in SAMP8 and in their control, the related strain SAMR1. In addition, we examined the resveratrol-mediated neuroprotective effects on several specific hallmarks of AD. We found that long-term dietary resveratrol activates AMPK pathways and pro-survival routes such as SIRT1 in vivo. It also reduces cognitive impairment and has a neuroprotective role, decreasing the amyloid burden and reducing tau hyperphosphorylation.
Resumo:
Resveratrol is a polyphenol that is mainly found in grapes and red wine and has been reported to be a caloric restriction (CR) mimetic driven by Sirtuin 1 (SIRT1) activation. Resveratrol increases metabolic rate, insulin sensitivity, mitochondrial biogenesis and physical endurance, and reduces fat accumulation in mice. In addition, resveratrol may be a powerful agent to prevent age-associated neurodegeneration and to improve cognitive deficits in Alzheimer's disease (AD). Moreover, different findings support the view that longevity in mice could be promoted by CR. In this study, we examined the role of dietary resveratrol in SAMP8 mice, a model of age-related AD. We found that resveratrol supplements increased mean life expectancy and maximal life span in SAMP8 and in their control, the related strain SAMR1. In addition, we examined the resveratrol-mediated neuroprotective effects on several specific hallmarks of AD. We found that long-term dietary resveratrol activates AMPK pathways and pro-survival routes such as SIRT1 in vivo. It also reduces cognitive impairment and has a neuroprotective role, decreasing the amyloid burden and reducing tau hyperphosphorylation.
Resumo:
There is still limited understanding of the processes underlying benthic species dynamics in marine coastal habitats, which are of disproportionate importance in terms of productivity and biodiversity. The life-history traits of long-lived benthic species in these habitats are particularly poorly documented. In this study, we assessed decadal patterns of population dynamics for ten sponge and anthozoan species that play key structural roles in coralligenous outcrops (~25 m depth) in two areas of the NW Mediterranean Sea. This study was based on examination of a unique long-term photographic series, which allowed analysis of population dynamics over extensive spatial and time spans for the very first time. Specifically, 671 individuals were censused annually over periods of 25-, 15-, and 5-years. This long-term study quantitatively revealed a common life-history pattern among the ten studied species, despite the fact they present different growth forms. Low mortality rates (3.4% yr−1 for all species combined) and infrequent recruitment events (mean value of 3.1±0.5 SE recruits yr−1) provided only a very small fraction of the new colonies required to maintain population sizes. Overall, annual mortality and recruitment rates did not differ significantly among years; however, some species displayed important mortality events and recruitment pulses, indicating variability among species. Based on the growth rates of these 10 species, we projected their longevity and, obtained a mean estimated age of 25-200 years. Finally, the low to moderate turnover rates (mean value 0.80% yr−1) observed among the coralligenous species were in agreement with their low dynamics and persistence. These results offer solid baseline data and reveal that these habitats are among the most vulnerable to the current increases of anthropogenic disturbances.