Las Palmas de Gran Canaria. The city and its coast and port

La ciudad de Las Palmas de Gran Canaria es una urbe atlántica que derivó en área metropolitana ya avanzada su historia. El hecho de ser encrucijada de rutas e influencias humanas, comerciales y culturales, la convierte en un espacio de profunda vocación marítima. La ciudad quedó inicialmente confinada a un espacio reducido, entre el mar, por naciente, y un relieve de disposición norte-sur que representó durante siglos el límite occidental de expansión urbana. El objeto del presente trabajo es estudiar la transformación del litoral capitalino en relación al proceso de origen y desarrollo del puerto y la consecuente expansión urbana. Las fuentes básicas son el archivo de la Autoridad Portuaria de Las Palmas, la Oficina de Planeamiento del Ayuntamiento de Las Palmas de Gran Canaria, Museo Canario, fondo cartográfico y fotografías aéreas del Departamento de Geografía de la Universidad de Las Palmas de Gran Canaria, fondo fotográfico de la Fundación para el Estudio y Desarrollo de la Artesanía Canaria (Fedac). Se realiza un estudio diacrónico y se establecen etapas del proceso.Las Palmas is an Atlantic city that has grown into a metropolitan area. As a crossroads of commercial routes and cultural influences, the city has become an important port. The city was initially confined to a limited space between the sea (to the East) and a terrain that represented for centuries the western limit of urban growth. This work analyses the transformation of the coastal zone of Las Palmas in relation to the origin and development of the port and urban growth. The basic sources have been the archive of the Port Authority of Las Palmas, the Office of Planning of Las Palmas, The Museum of the Canary Islands, and photos from FEDAC and Department of Geography of University of Las Palmas.Este trabajo se enmarca dentro del proyecto Global South. Puertos y desarrollo económico y social en el Atlántico Meridional (1850-1910). HAR2015-64044-R MINECO/FEDER, UE

Puertos y turismo de cruceros en islas del Atlántico medio septentrional (Caribe y Macaronesia)

This work makes an approximation of cruise tourism in the North Mid-Atlantic. In the work we study the characteris­tics of the ports, routes and destinations of the Caribbean and Macaronesia, establishing a comparative and individual analysis of each area. This paper analyses the number of cruises, their frequency, seasonality, duration, the main routes, the most visited resources and the characteristics of the ports, from which a typological proposal is carried out. Some similarities have been ob­served between both spaces, but above all, there are differences, both quantitative and qualitative. We are witnessing a transfor­mation of the cruise tourism model that is the result of the growth of this segment, which is giving rise to new ways of using the territory and its resources. Ports are being transformed quickly due to infrastructure investments, but their location is less and less decisive in the design of routes.El presente trabajo realiza una aproximación al turismo de cruceros en el Atlántico Medio Septentrional. Se estudian las características de los puertos, rutas y destinos del Caribe y la Macaronesia, estableciendo un análisis comparado e individual de cada ámbito. Se analiza el número de cruceros, su frecuencia, estacionalidad y duración, las principales rutas, los recursos más visitados y también las características de los puertos, de los que se elabora una propuesta tipológica. Se han observado algunas similitudes entre ambos espacios, pero sobre todo existen diferencias, tanto cuantitativas, como cualitativas. Asistimos a una transformación del modelo de turismo de cruceros que es resultado del crecimiento de este segmento, lo que está dando lugar a nuevas formas de utilización del territorio y sus recursos. Los puertos se transforman con rapidez debido a las inversiones en in­fraestructuras, pero su localización es cada vez menos determinante en el diseño de las rutas

Intoxicación por plaguicidas en pacientes asistidos en el Centro Nacional de Toxicología del Ministerio de Salud Pública

Se ha observado un gran incremento en el uso de plaguicidas en el Paraguay, especialmente en el área agrícola; sin embargo la conciencia sobre el peligro del uso de las sustancias químicas aún tiene una historia relativamente corta, y actualmente el control está bastante limitado. Las estadísticas no tienen un registro único, por lo que se estima un importante subregistro de casos. El siguiente trabajo corresponde a un estudio descriptivo de corte transversal y retrospectivo con el propósito de determinar la frecuencia de intoxicación por el uso de plaguicidas y las características demográficas de pacientes que acudieron al CentroNacional de Toxicología (CNT) del Centro de Emergencias Médicas de Asunción, Paraguay, en el período de julio del 2000 a mayo del 2004. El 13,7% de 2570 intoxicaciones correspondieron a plaguicidas, siendo las más frecuentes a órgano fosforados (47,1%). El grupo etáreo másfrecuente correspondió al de 16 a 30 años (50,3%) con predominio en el sexo femenino (58.2%). Con relación a la ocupación las intoxicaciones afectaban a estudiantes de primaria y secundaria con 61 casos (22,6%), seguidos por 49 casos domésticos (18,2%) y agricultores con31 casos (11,5%). La mayoría de los pacientes provenían del departamento Central con 190 casos (53,9%). Se destaca el bajo número de casos asistidos en el CNT de los departamentosque usan mayor cantidad de plaguicidas, además del fácil acceso que estudiantes de primaria y secundaria tienen a estas sustancias químicas

ÁREA DE ACTIVIDAD Y COMPORTAMIENTO DEL LAGARTO Tropidurus hispidus (Spix 1825) (SAURIA-TROPIDURIDAE) EN CERRO COLORADO. CUMANÁ, ESTADO SUCRE, VENEZUELA

El área de actividad y algunas pautas en el comportamiento de adultos del lagarto Tropidurus hispidus fueron estudiados en Cerro Colorado, estado Sucre, Venezuela. Para calcular el área de actividad se utilizaron los métodos del polígono convexo y el de la elipse. El área de actividad en los machos (334,81 m2) resultó ser cualitativamente mayor que el de las hembras (105,85 m2), no se detectaron diferencias significativas entre ambas. En las hembras entre el área de actividad y la masa corporal, se registró una relación negativa y significativa, pero no así en los machos. Se identificaron ocho pautas de posición, cinco de mantenimiento y siete de desplazamiento.   PALABRAS CLAVE: Tropidurus hispidus, área de actividad, comportamiento, noreste, Venezuela.   ABSTRACT Home range and other patterns of behavior of adult lizards, Tropidurus hispidus, were studied in their habitat in Cerro Colorado, state of Sucre, Venezuela. The minimum convex polygon method and that of the ellipse were used to calculate the lizards’ area of activity. Mean home range for males resulted qualitatively larger (334.81 m2) than that of females (105.85 m2). No significant differences were found. Home range negatively correlated with body mass in females but not in males. Twenty behavioral patterns were identified, eight of position, five of maintenance, and seven of locomotion.   KEY WORDS: Tropidurus hispidus, home range, behavior, northeastern Venezuela

Puertos y ciudades del Atlántico medio: Análisis comparado entre Salvador de Bahía (Brasil) y Las Palmas de Gran Canaria (España)

This paper deals with a diachronic and comparative study between two Atlantic cities: Salvador da Bahia, Brazil, and Las Palmas de Gran Canaria, Spain, analysing their recent transformation. We study the evolution of both cities in relation to their respective ports and the concordance and differences existing in both processes. The comparative analysis addresses the geography of each city, as well as the origin and development of the port and urban areas. Although with logical differences, both spaces seem to have gone through similar processes of development, although the causes and results differ from case to case.Este artículo aborda un estudio diacrónico y comparativo entre dos ciudades atlánticas: Salvador de Bahía, Brasil, y Las Palmas de Gran Canaria, España, analizando su reciente transformación. Se estudia la evolución de ambas ciudades en relación con sus respectivos puertos y se establecen las concordancias y diferencias existentes en ambos procesos. El análisis comparativo aborda la geografía de cada ciudad, tanto como el origen y desarrollo portuario y urbano, para concluir que ambos espacios han seguido procesos similares de desarrollo, pero con etapas y casuísticas diferentes en cada caso

One Way of Bringing Final Year Computer Science Student World to the World of Children with Cerebral Palsy: A Case Study

In this paper, a learning project is explained which is being carried out at the school of computer science at the University of Seville. The aim is that students receive knowledge of assistive technologies when in fact there is no this discipline in our curricula. So the best way, it is programming final studies projects in this field. We want to make the projects have a real application and can solve difficulties that children with Cerebral Palsy have in their daily activities in the school.Junta de Andalucía p08-TIC-363

Dietary, Cultural, and Pathogens-Related Selective Pressures Shaped Differential Adaptive Evolution among Native Mexican Populations

Native American genetic ancestry has been remarkably implicated with increased risk of diverse health issues in several Mexican populations, especially in relation to the dramatic changes in environmental, dietary, and cultural settings they have recently undergone. In particular, the effects of these ecological transitions and Westernization of lifestyles have been investigated so far predominantly on Mestizo individuals. Nevertheless, indigenous groups, rather than admixed Mexicans, have plausibly retained the highest proportions of genetic components shaped by natural selection in response to the ancient milieu experienced by Mexican ancestors during their pre-Columbian evolutionary history. These formerly adaptive variants have the potential to represent the genetic determinants of some biological traits that are peculiar to Mexican people, as well as a reservoir of loci with possible biomedical relevance. To test such a hypothesis, we used genome-wide genotype data to infer the unique adaptive evolution of Native Mexican groups selected as reasonable descendants of the main pre-Columbian Mexican civilizations. A combination of haplotype-based and gene-network analyses enabled us to detect genomic signatures ascribable to polygenic adaptive traits plausibly evolved by the main genetic clusters of Mexican indigenous populations to cope with local environmental and/or cultural conditions. Some of these adaptations were found to play a role in modulating the susceptibility/resistance of these groups to certain pathological conditions, thus providing new evidence that diverse selective pressures have contributed to shape the current biological and disease-risk patterns of present-day Native and Mestizo Mexican populations

NO2 seasonal evolution in the north subtropical free troposphere

Three years of multi-axis differential optical absorption spectroscopy (MAXDOAS) measurements (2011-2013) have been used for estimating the NO2 mixing ratio along a horizontal line of sight from the high mountain subtropical observatory of Izaña, at 2370 m a.s.l. (NDACC station, 28.3° N, 16.5° W). The method is based on horizontal path calculation from the O2-O2 collisional complex at the 477 nm absorption band which is measured simultaneously to the NO2 column density, and is applicable under low aerosol-loading conditions. The MAXDOAS technique, applied in horizontal mode in the free troposphere, minimizes the impact of the NO2 contamination resulting from the arrival of marine boundary layer (MBL) air masses from thermally forced upwelling breeze during middle hours of the day. Comparisons with in situ observations show that during most of the measuring period, the MAXDOAS is insensitive or very slightly sensitive to the upwelling breeze. Exceptions are found for pollution events during southern wind conditions. On these occasions, evidence of fast, efficient and irreversible transport from the surface to the free troposphere is found. Background NO2 volume mixing ratio (vmr), representative of the remote free troposphere, is in the range of 20-45 pptv. The observed seasonal evolution shows an annual wave where the peak is in phase with the solar radiation. Model simulations with the chemistry-climate CAM-Chem model are in good agreement with the NO2 measurements, and are used to further investigate the possible drivers of the NO2 seasonality observed at Izaña.Peer Reviewe

Reactivity and fate of secondary alkane sulfonates (SAS) in marine sediments

This research is focused on secondary alkane sulfonates (SAS), anionic surfactants widely used in household applications that access aquatic environments mainly via sewage discharges.We studied their sorption capacity and anaerobic degradation in marine sediments, providing the first data available on this topic. SAS partition coefficients increased towards those homologues having longer alkyl chains(from up to 141 L kg 1 for C14 to up to 1753 L kg 1 for C17), which were those less susceptible to undergo biodegradation. Overall, SAS removal percentages reached up to 98% after 166 days of incubation using anoxic sediments. The degradation pathway consisted on the formation of sulfocarboxylic acids after an initial fumarate attack of the alkyl chain and successive b-oxidations. This is the first study showing that SAS can be degraded in absence of oxygen, so this new information should be taken into account for future environmental risk assessments on these chemicals