895 resultados para Beach volleyball


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Projecte que pretén planificar els serveis que pot oferir la Residència Diocesana d'Estudiants, amb dues condicions: que sigui tècnicament correcta i entri dintre d'uns principis humanístics mínims i que a això se li doni un sentit d'utilitat social i ajudi, expressament, les parts menys afavorides de la societat (no només econòmicament). Entre els serveis proposats consten els següents: un internat de 300 places per a infants i adolescents; la posada en marxa, obertura i utilització d'un antic internat per a fer-ne una mena de centre de recursos alternatius a l'escola (colònies, campaments, estades educatives, etc.), així com també d'una casa de colònies que està creant-se i de dues zones d'acampada (una a la serra, l'altra a la platja); la creació de l'Escola de l'Esplai diocesana (és dels pocs bisbats de Catalunya que no en té, i aquest bisbat abasta també el nord de Castelló); la generació d'un servei per a elaborar els diversos tipus de mediacions que, a hores d'ara, demana la societat, i dels quals s'espera un fort creixement (matrimonis, menors, etc.), i la cerca d'altres serveis que es puguin oferir a menors i a famílies que tinguin dificultats econòmiques (centre d'acolliments familiars, etc.).

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This article examines the effect on price of different characteristics of holiday hotels in the sun-and-beach segment, under the hedonic function perspective. Monthly prices of the majority of hotels in the Spanish continental Mediterranean coast are gathered from May to October 1999 from the tour operator catalogues. Hedonic functions are specified as random-effect models and parametrized as structural equation models with two latent variables, a random peak season price and a random width of seasonal fluctuations. Characteristics of the hotel and the region where they are located are used as predictors of both latent variables. Besides hotel category, region, distance to the beach, availability of parking place and room equipment have an effect on peak price and also on seasonality. 3- star hotels have the highest seasonality and hotels located in the southern regions the lowest, which could be explained by a warmer climate in autumn

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Aquest projecte s’ emmarca dins el camp de la gestió i la planificació del territori. El cas d’ estudi en qüestió es desenvolupa a Playa Tamarindo (Costa Rica). Es realitza una anàlisi de la situació actual i s’ estudia l’ evolució d’ aquesta localitat en els darrers anys. Aquesta anàlisi determina els canvis que han estat presents tant des del punt de vista físic com socioeconòmic, avaluant-els i quantifican-els per poder-los contrastar

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The understanding of sedimentary evolution is intimately related to the knowledge of the exact ages of the sediments. When working on carbonate sediments, age dating is commonly based on paleontological observations and established biozonations, which may prove to be relatively imprecise. Dating by means of strontium isotope ratios in marine bioclasts is the probably best method in order to precisely date carbonate successions, provided that the sample reflects original marine geochemical characteristics. This requires a precise study of the samples including its petrography, SEM and cathodoluminescence observations, stable carbon and oxygen isotope geochemistry and finally the strontium isotope measurement itself. On the Nicoya Peninsula (Northwestern Costa Rica) sediments from the Piedras Blancas Formation, Nambi Formation and Quebrada Pavas Formation were dated by the means of strontium isotope ratios measured in Upper Cretaceous Inoceramus shell fragments. Results have shown average 87Sr/86Sr values of 0.707654 (middle late Campanian) for the Piedras Blancas Formation, 0.707322 (Turonian-Coniacian) for the Nambi Formation and 0.707721 (late Campanian-Maastrichtian) for the Quebrada Pavas Formation. Abundant detrital components in the studied formations constitute a difficulty to strontium isotope dating. In fact, the fossil bearing sediments can easily contaminate the target fossil with strontium mobilized form basalts during diagenesis and thus the obtained strontium isotope ratios may be influenced significantly and so will the obtained ages. The new and more precise age assignments allow for more precision in the chronostratigraphic chart of the sedimentary and tectonic evolution of the Nicoya Peninsula, providing a better insight on the evolution of this region. Meteor Cruise M81 dredged shallow water carbonates from the Hess Rise and Hess Escarpment during March 2010. Several of these shallow water carbonates contain abundant Larger Foraminifera that indicates an Eocene-Oligocene age. In this study the strontium isotope values ranging from 0.707847 to 0.708238 can be interpreted as a Rupelian to Chattian age of these sediments. These platform sediments are placed on seamounts, now located at depths reaching 1600 m. Observation of sedimentologic characteristics of these sediments has helped to resolve apparent discrepancies between fossil and strontium isotope ages. Hence, it is possible to show that the subsidence was active during early Miocene times. On La Désirade (Guadeloupe France), the Neogene to Quaternary carbonate cover has been dated by microfossils and some U/Th-ages. Disagreements subsisted in the paleontological ages of the formations. Strontium isotope ratios ranging from 0.709047 to 0.709076 showed the Limestone Table of La Désirade to range from an Early Pliocene to Late Pliocene/early Pleistocene age. A very late Miocene age (87Sr/86Sr =0.709013) can be determined to the Detrital Offshore Limestone. The flat volcanic basement had to be eroded by wave-action during a long-term stable relative sea-level. Sediments of the Table Limestone on La Désirade show both low-stand and high-stand facies that encroach on the igneous basement, implying deposition during a major phase of subsidence creating accommodation space. Subsidence is followed by tectonic uplift documented by fringing reefs and beach rocks that young from the top of the Table Limestone (180 m) towards the present coastline. Strontium isotope ratios from two different fringing reefs (0.707172 and 0.709145) and from a beach rock (0.709163) allow tentative dating, (125ky, ~ 400ky, 945ky) and indicate an uplift rate of about 5cm/ky for this time period of La Désirade Island. The documented subsidence and uplift history calls for a new model of tectonic evolution of the area.

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This paper provide an overview of the surveillance environmental efforts and risk management for the public health linked to the register of a disease outbreak related to an episode of toxic potentially and harmful microalgae, identified during the summer of 2010 in a recreational beach of a touristic municipality in the coast of Málaga (Spain). Phytoplankton analyses showed the presence of different species producers of marine biotoxins, dominating Ostreopsis cf. ovata in the followed immediately days to the communication of 39 clinical cases of people that required health cares. The risks of the toxins produced by microalgae must be taken into account in the health networks surveillance for recreational waters. This study suggests the possibility to review the actions of the public health services from Public Administration, to the light of the increasing information on episodic harmful algal blooms.

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The aim of this study was to determine the occurrences of the group A rotavirus (RVA), norovirus (NoV) and human adenovirus (HAdV) in the surface waters of an urban lagoon (Rodrigo de Freitas Lagoon) in the city of Rio de Janeiro, Brazil. During one year of surveillance, water samples were obtained from the lagoon and other interconnected ecosystems (river and beach). The samples were concentrated using an adsorption-elution method with a negatively charged membrane and tested by qualitative and quantitative polymerase chain reaction assays. RVA was the most prevalent virus detected (24.3%) with a viral load ranging from 3.0 x 10¹-5.6 x 10(4) genome copies/L, followed by NoV (18.8%) and HAdV (16.7%). Considering water samples suitable for bathing, according to Escherichia coli criterion (< 2,000 most probable number/100 mL), viruses were detected in 50% (57/114) of them. Physicochemical parameters were also measured and showed possible correlations between turbidity and RVA presence and between pH and NoV presence. These data demonstrate the importance of considering viral parameters to ensure water quality and the utilisation of these parameters as additional tools for the characterisation of environmental contamination.

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INTRODUCTION: Physical training programmes are based on provoking transitory states of fatigue in order to induce super compensation by the biological systems involved in the activity, in order to improve the athlete's medium-long term performance. The administration of nutritional supplements with antioxidant and immunomodulatory properties, such as Phlebodium decumanum and coenzyme Q10, can be a very advantageous means of achieving recovery from the inflammation and tissue damage caused by the stress of prolonged, intense exercise. METHODOLOGY: An experimental, longitudinal, double- blind experiment was conducted, with three randomised groups obtained from a sample of 30 male volleyball players (aged 22-32 years) at the University of Granada, with a high level of training (17 hours a week during the 6 months preceding the study). The effects were then evaluated of a month-long physical training programme, common to all the study groups, associated with the simultaneous administration of the following nutritional supplements: Phlebodium decumanum (4 capsules of 400 mg/capsule, daily), Experimental Group 1; Phlebodium decumanum (same dose andchedule as Group 1) plus coenzyme Q10 (4 capsules of 30 mg/ capsule, daily), Experimental Group 2; a placebo substance, Control Group. The following dependent blood variables were examined to assess the effects of the intervention on the basal immune and endocrine-metabolic profile: cortisol and interleukin-6, both related to the axis of exercise-induced stress; and lactic acid and ammonium, related essentially to the anaerobic metabolism of energy. RESULTS: All the study groups presented favourable adaptive changes with respect to the endocrine-metabolic and immune profile, as reflected by a significant decrease in the post-test concentrations of cortisol, interleukin 6, lactic acid and ammonium, compared to the values recorded before the physical activity with/without nutritional supplement, per protocol. The groups that achieved the most favourable profile were those which had received nutritional supplementation, rather than the placebo, and among the former, those which had received the double- strength supplement with Phlebodium decumanum plus coenzyme Q10. CONCLUSIONS: The intake of Phlebodium decumanum plus coenzyme Q10 for 4 weeks produced protective effects on the endocrine-metabolic and immune profile, which we attribute to the immunomodulatory and antioxidant properties of these substances, which are highly beneficial not only in terms of delaying fatigue and improving athletic performance, but also in reducing the risk of injuries associated with high intensity exercise.

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Several studies (on an inclined platform or with special shoes) have reported improved jump performance when the ankle was in a dorsiflexion (DF) position. The present study aims to test whether shoes inducing moderate DF modify vertical jump performance and energy cost. Twenty-one young, healthy female subjects (30 +/- 6 yr, 58 +/- 6 kg, O2max 45 +/- 3 mLxkg-1xmin-1, mean +/- SD) participated in the study. Jump performance was tested with subjects either wearing 4 degrees DF or standard (S) shoes. The jump tests (performed on a force platform) consisted of squat jump (SJ), countermovement jump (CMJ), and continuous jumps (CJ) during 15 seconds. Measured parameters were jump height, speed at take off, and maximal and average power. Oxygen uptake was measured on a treadmill while subjects ran at 95% of the anaerobic threshold during a 7-minute steady-state period. As compared with S shoes, DF shoes significantly improved the height of SJ (31 +/- 4 cm vs. 34 +/- 4 cm, p = 0.0001), CMJ (32 +/- 4 cm vs. 34 +/- 4 cm, p = 0.0004), and CJ (17.5 +/- 4.2 cm vs. 22.0 +/- 6.0 cm, p = 0.0001). Speed at take off was also significantly higher. Mean power significantly increased in SJ and CJ but not in CMJ. Oxygen uptake was not different between conditions (p = 0.40). Dorsiflexion shoes induce a significant increase in jump performance. These results are in accordance with the concept that a DF of the ankle may induce an increase of the length and strength of the triceps surae (higher torque). However, wearing DF shoes did not require more energy during running. Dorsiflexion shoes could be used to increase jump performance in several sports such as volleyball in which jump height is essential.

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Given a set of images of scenes containing different object categories (e.g. grass, roads) our objective is to discover these objects in each image, and to use this object occurrences to perform a scene classification (e.g. beach scene, mountain scene). We achieve this by using a supervised learning algorithm able to learn with few images to facilitate the user task. We use a probabilistic model to recognise the objects and further we classify the scene based on their object occurrences. Experimental results are shown and evaluated to prove the validity of our proposal. Object recognition performance is compared to the approaches of He et al. (2004) and Marti et al. (2001) using their own datasets. Furthermore an unsupervised method is implemented in order to evaluate the advantages and disadvantages of our supervised classification approach versus an unsupervised one

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Loggerhead Caretta caretta is now the only species of marine turtle nesting on the island of Sal, Cape Verde Islands. Since 2008, ADTMA - SOS Tartarugas has patrolled all the southern beaches of the island in order to protect nesting females and to collect nesting data. Although hunting is still a major issue, with 90 turtles killed in 2009, habitat loss and light pollution are becoming an ever more serious threat. Construction sites, hotels, apartment buildings and restaurants close to beaches, bright lights and illegal removal of sand are contributing to a marked decrease in the total number of nesting turtles on some beaches. In 2009, beaches on Sal experienced an average increase in nests of 200%, while the beach most affected by construction (Tortuga Beach) saw a decrease of nests of 7.3% (from 19.1% of total number of nests in 2008 to 11.8% in 2010). This beach also recorded a much lower nest to emergence ratio than normal (17.6% of emergences resulting in nests compared to 29.9% in other areas), indicating reluctance to nest due to light pollution and other disturbances.

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Studies on lower attines are scarce, especially on nesting and foraging ecology and behavior. This study aimed to contribute to the knowledge of an Attini in dunes ecosystems through the description of density and spatial distribution of Mycetophylax simplex (Emery, 1887) nests in a strip of mobile dunes in the Praia Grande beach, Torres, northern coast of Rio Grande do Sul, Brazil. The density and spatial distribution of nests were estimated in four plots of 2,500 m² each, in which were found 20, 209, 284 and 324 nests, with average densities of 0.01 nests/m², 0.09, 0.11 and 0.13 nests/m², respectively. The nests were found near to the vegetation and showed clumped distribution. The density and distribution pattern of the nests seem to be related to the availability of nesting places and foraging resources.

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O presente relatório enquadra-se no plano curricular, pertencente ao curso de Gestão Hoteleira e Turismo, frequentado na Universidade de Mindelo. O estágio profissional decorreu no hotel Tortuga Beach, integrante da cadeia de Hotéis Meliã. Neste relatório poder-se-ão, encontrar descritos, os locais do departamento onde foi desenvolvido o estágio, bem como as actividades desenvolvidas ao longo dos três meses da sua duração. No final, encontra-se a reflexão crítica dividida por aprendizagens, dificuldades e sugestões, que faz a avaliação geral do estágio. Em jeito de considerações finais, encontram-se as conclusões, realçam-se as ideias gerais do estágio e reforça-se a opinião sobre o decorrer do mesmo.

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A extracção de areia nas praias do mar, nas bacias hidrográficas e nas encostas montanhosas, tem sido prática de muitas famílias cabo-verdianas. A Praia de Calhetona foi uma das que nos últimos anos sofreu degradação significativa, em função da apanha clandestina de areia, sem qualquer plano de extracção, destinada a construção civil. A extracção de areia, para vender ou para a autoconstrução, é efectuada em família por indivíduos, maioritariamente do sexo feminino, de baixa renda ou sem profissão remunerada. O processo de extracção de areia na Praia de Calhetona teve o seu ponto alto nos anos 80, diminuindo consideravelmente com a escassez de areia e implementação do Decreto – Lei nº 69/97, de 3 de Novembro, que visava disciplinar a exploração de inertes nas praias. Em face da pesquisa feita, baseada no estudo de caso, ficou expresso que os inquiridos implicados na actividade de extracção clandestina de areia correm riscos elevados para obterem lucros reduzidos. Quem efectivamente beneficia são os camionistas que compram esse inerte e o vendem pelo dobro do preço. Qualquer actividade de exploração de recursos naturais causa impactes sobre o espaço de actuação. No caso da Praia de Calhetona, observa-se o recuo da linha de costa, a quase ausência de areia e a desertificação de propriedades nas suas proximidades, para além dos impactes negativos sobre o turismo, a função balnear e a desova de tartaruga. Apesar de tudo, constata-se uma consciência generalizada dos impactes ambientais causados pelos inquiridos, os quais, no entanto, alegam que a extracção de areia é uma das alternativas para garantir a sobrevivência individual e das suas famílias.

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A extracção de areia nas praias do mar, nas bacias hidrográficas e nas encostas montanhosas, tem sido prática de muitas famílias cabo-verdianas. A Praia de Calhetona foi uma das que nos últimos anos sofreu degradação significativa, em função da apanha clandestina de areia, sem qualquer plano de extracção, destinada a construção civil. A extracção de areia, para vender ou para a autoconstrução, é efectuada em família por indivíduos, maioritariamente do sexo feminino, de baixa renda ou sem profissão remunerada. O processo de extracção de areia na Praia de Calhetona teve o seu ponto alto nos anos 80, diminuindo consideravelmente com a escassez de areia e implementação do Decreto – Lei nº 69/97, de 3 de Novembro, que visava disciplinar a exploração de inertes nas praias. Em face da pesquisa feita, baseada no estudo de caso, ficou expresso que os inquiridos implicados na actividade de extracção clandestina de areia correm riscos elevados para obterem lucros reduzidos. Quem efectivamente beneficia são os camionistas que compram esse inerte e o vendem pelo dobro do preço. Qualquer actividade de exploração de recursos naturais causa impactes sobre o espaço de actuação. No caso da Praia de Calhetona, observa-se o recuo da linha de costa, a quase ausência de areia e a desertificação de propriedades nas suas proximidades, para além dos impactes negativos sobre o turismo, a função balnear e a desova de tartaruga. Apesar de tudo, constata-se uma consciência generalizada dos impactes ambientais causados pelos inquiridos, os quais, no entanto, alegam que a extracção de areia é uma das alternativas para garantir a sobrevivência individual e das suas famílias.

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A extracção de areia nas praias do mar, nas bacias hidrográficas e nas encostas montanhosas, tem sido prática de muitas famílias cabo-verdianas. A Praia de Calhetona foi uma das que nos últimos anos sofreu degradação significativa, em função da apanha clandestina de areia, sem qualquer plano de extracção, destinada a construção civil. A extracção de areia, para vender ou para a autoconstrução, é efectuada em família por indivíduos, maioritariamente do sexo feminino, de baixa renda ou sem profissão remunerada. O processo de extracção de areia na Praia de Calhetona teve o seu ponto alto nos anos 80, diminuindo consideravelmente com a escassez de areia e implementação do Decreto – Lei nº 69/97, de 3 de Novembro, que visava disciplinar a exploração de inertes nas praias. Em face da pesquisa feita, baseada no estudo de caso, ficou expresso que os inquiridos implicados na actividade de extracção clandestina de areia correm riscos elevados para obterem lucros reduzidos. Quem efectivamente beneficia são os camionistas que compram esse inerte e o vendem pelo dobro do preço. Qualquer actividade de exploração de recursos naturais causa impactes sobre o espaço de actuação. No caso da Praia de Calhetona, observa-se o recuo da linha de costa, a quase ausência de areia e a desertificação de propriedades nas suas proximidades, para além dos impactes negativos sobre o turismo, a função balnear e a desova de tartaruga. Apesar de tudo, constata-se uma consciência generalizada dos impactes ambientais causados pelos inquiridos, os quais, no entanto, alegam que a extracção de areia é uma das alternativas para garantir a sobrevivência individual e das suas famílias.