190 research outputs found
Los visitantes del Parc Natural de l’Alt Pirineu y la práctica de actividades recreativo-deportivas. una propuesta de segmentación
In recent years there has been a large increase in the practice of recreational and sports activities in protected natural areas. As part of the planning and management of public use of these areas, is essential to a deeper understanding of the characteristics of the visitors. This study analyzes the characteristics of the different segments of visitors to Alt Pirineu Natural Park based on recreational and sports activities practiced. For this study, 1.600 surveys were conducted in 16 sampling points over a calendar year between the months of July 2010 and June 2011. In total we identified eight segments of visitors based on physical activity: walkers, recreational hikers, hikers, mountaineer, cyclists, mushroom picker, off road driver and skier. The results obtained here are discussed in terms of their possible applicability in the management of public use of this park and other protected natural areas and also for the development of management strategies and awareness campaigns aimed at different segments of visitors.En los últimos años se ha registrado un gran incremento en la práctica de las actividades recreativodeportivas en los espacios naturales protegidos. En el marco de la planificación y la gestión del uso público de este tipo de espacios, resulta fundamental profundizar en el conocimiento de las características de los visitantes. En este estudio se analiza el perfil de los diferentes segmentos de visitantes del Parc Natural de l’Alt Pirineu en base a las actividades recreativo-deportivas practicadas. Para este estudio se realizaron 1.600 encuestas en 16 puntos de muestreo, a lo largo de un año natural comprendido entre los meses de Julio de 2010 y Junio de 2011. En total se identificaron ocho segmentos de visitantes en función de la actividad física: paseantes, excursionistas, senderistas, montañistas, ciclistas, recolectores de setas, motoristas y esquiadores. Los resultados aquí obtenidos son discutidos en términos de su posible aplicación en la gestión del uso público de este parque (extrapolable también a otros espacios naturales protegidos españoles), proponiendo estrategias de gestión y campañas de sensibilización dirigidas a los diferentes segmentos de visitantes
Los visitantes del Parc Natural de l’Alt Pirineu y la práctica de actividades recreativo-deportivas. una propuesta de segmentación
In recent years there has been a large increase in the practice of recreational and sports activities in protected natural areas. As part of the planning and management of public use of these areas, is essential to a deeper understanding of the characteristics of the visitors. This study analyzes the characteristics of the different segments of visitors to Alt Pirineu Natural Park based on recreational and sports activities practiced. For this study, 1.600 surveys were conducted in 16 sampling points over a calendar year between the months of July 2010 and June 2011. In total we identified eight segments of visitors based on physical activity: walkers, recreational hikers, hikers, mountaineer, cyclists, mushroom picker, off road driver and skier. The results obtained here are discussed in terms of their possible applicability in the management of public use of this park and other protected natural areas and also for the development of management strategies and awareness campaigns aimed at different segments of visitors.<br><br>En los últimos años se ha registrado un gran incremento en la práctica de las actividades recreativodeportivas en los espacios naturales protegidos. En el marco de la planificación y la gestión del uso público de este tipo de espacios, resulta fundamental profundizar en el conocimiento de las características de los visitantes. En este estudio se analiza el perfil de los diferentes segmentos de visitantes del Parc Natural de l’Alt Pirineu en base a las actividades recreativo-deportivas practicadas. Para este estudio se realizaron 1.600 encuestas en 16 puntos de muestreo, a lo largo de un año natural comprendido entre los meses de Julio de 2010 y Junio de 2011. En total se identificaron ocho segmentos de visitantes en función de la actividad física: paseantes, excursionistas, senderistas, montañistas, ciclistas, recolectores de setas, motoristas y esquiadores. Los resultados aquí obtenidos son discutidos en términos de su posible aplicación en la gestión del uso público de este parque (extrapolable también a otros espacios naturales protegidos españoles), proponiendo estrategias de gestión y campañas de sensibilización dirigidas a los diferentes segmentos de visitantes
Runner’s Profile and Propensity to Sports Injury
Se evalúa las relaciones entre el perfil sociodemográfico, la accidentabilidad y la propensión al accidente de los participantes en tres eventos deportivos: Zurich Marató de Barcelona, Cros de Muntanya Can Caralleu, y Marató Borredà-Xtrail. Una adaptación del cuestionario de propensión al accidente deportivo (PAD-22) de Latorre y Pantoja (2013) fue administrado a un total de 237 corredores. Los principales resultados muestran que: los corredores tienden a ser mayoritariamente varones, de entre 30 y 46 años, asalariados, con estudios postobligatorios, con experiencia previa en eventos de larga distancia, entrenan una media de 4 veces y un total de 7 horas a la semana; y los corredores de la maratón por asfalto tienen una sobreestimación de la Competencia Percibida y grados de Competitividad mayores a los corredores por montañaThis study evaluates relations between sociodemographic profile, accident rate and accident’s propensity of three sport events participants: Zurich Marató de Barcelona, Cros de Muntanya Can Caralleu & Marató Borredà-Xtrail. The used method was an adaptation of the sports accident prone scale (PAD-22) from Latorre y Pantoja (2013), to 237 runners. The main results show that: runners tend to be mostly men, aged of 30-46 years, are salaried, have post-compulsory studies, have some experience in long distance events, train a mean of 4 times and more than 7 hours per week; and marathon asphalt runners have a overestimation of Perceived Competence and elevated degrees of Competitiveness, more than trail runnersEste trabajo forma parte del Proyecto de Investigación, con código 2014 PINEF 00006 y ha sido realizado con el apoyo del programa de becas predoctorales del Instituto Nacional de Educación Física de Cataluña (PINEFC-2015). Agradecemos el apoyo dado por el INEFC en la realización de este estudio, puesto que, sin su cobijo, no se hubiera podido llevar a cabo con las mismas condicione
Effect of the age of broodstock males on sperm function during cold storage in the trout (Oncorhynchus mykiss)
The knowledge of sperm quality in the broodstock males of different ages is a prerequisite to identify the reproductive ability of cultivated fish for the hatchery management. Thus, in this work, we analysed sperm function of the semen stored of broodstock males of rainbow trout (Oncorhychus mykiss) in different reproductive ages (2, 3 and 4years old). Sperm samples of each reproductive age were stored in Storfish((R)) during 10days at 4 degrees C, and then, motility, viability, mitochondrial function (MMP), superoxide anion (O-2(-)) level and DNA fragmentation (DNA(frag)) were assessed. The results demonstrated that sperm function parameters were affected significantly by the age of the males and the time of storage. Motility, viability and MMP significantly decreased, and DNA(frag) and O-2(-) level increased with the age increment and the time of storage. In conclusion, sperm quality of 2 and 3years old were superior to those of 4years old, based on higher quality of various sperm functions such as motility, viability, MMP, DNA integrity and level O-2(-) during short-term storage. This information must be considered for optimum utilization of broodstock males in aquacultur
Factores de riesgo para el desarrollo de Tuberculosis multidrogorresistente en Colombia, 2008 A 2011
Objective Determining the risk factors associated with developing multidrug-resistant tuberculosis in people aged over 18 years affiliated to 3 Colombian health insurance companies between 2008 and 2011. Methods The study involved a matched case-control design (1 case to 4 controls). Patients were identified from 3 health insurance companies’ tuberculosis program database; this gave 45 cases and 180 controls. Demographic, socioeconomic and clinical variables were evaluated. Results The median age for cases was 43 years (39.5 years for controls); males predominated in cases (73.3 %) while women predominated in controls (51.1 %). A statistically significant association was found between multidrug-resistant tuberculosis and being male (4.47 adjusted OR; 1.01-19.75 95 %CI), having subsidized social security cover (57.6 adjusted OR; 4.6-71.28 95 %CI) and having had prior treatment for tuberculosis (56.2 adjusted OR; 10.03-314.79 95 % CI]. Conclusions Prior treatment for tuberculosis and being male were risk factors for developing multidrug resistance. Further studies are needed with the Colombian health system to clarify the findings with respect to being affiliated to a subsidized health system and the development of multidrug resistant tuberculosis. © 2016, Universidad Nacional de Colombia. All rights reserved
Geobiology of Andean Microbial Ecosystems Discovered in Salar de Atacama, Chile
The Salar de Atacama in the Chilean Central Andes harbors unique microbial ecosystems due to extreme environmental conditions, such as high altitude, low oxygen pressure, high solar radiation, and high salinity. Combining X-ray diffraction analyses, scanning electron microscopy and molecular diversity studies, we have characterized twenty previously unexplored Andean microbial ecosystems in eight different lakes and wetlands from the middle-east and south-east regions of this salt flat. The mats and microbialites studied are mainly formed by calcium carbonate (aragonite and calcite) and halite, whereas the endoevaporites are composed predominantly of gypsum and halite. The carbonate-rich mats and microbialites are dominated by Bacteroidetes and Proteobacteria phyla. Within the phylum Proteobacteria, the most abundant classes are Alphaproteobacteria, Gammaproteobacteria and Deltaproteobacteria. While in the phylum Bacteroidetes, the most abundant classes are Bacteroidia and Rhodothermia.
Cyanobacteria, Chloroflexi, Planctomycetes, and Verrucomicrobia phyla are also wellrepresented in the majority of these systems. Gypsum endoevaporites, on the contrary, are dominated by Proteobacteria, Bacteroidetes, and Euryarchaeota phyla.
The Cyanobacteria phylum is also abundant in these systems, but it is less represented in comparison to mats and microbialites. Regarding the eukaryotic taxa, diatoms are key structural components in most of the microbial ecosystems studied. The genera of diatoms identified were Achnanthes, Fallacia, Halamphora, Mastogloia, Navicula, Nitzschia, and Surirella. Normally, in the mats and microbialites, diatoms form nano-globular carbonate aggregates with filamentous cyanobacteria and other prokaryotic cells, suggesting their participation in the mineral precipitation process.
This work expands our knowledge of the microbial ecosystems inhabiting the extreme environments from the Central Andes region, which is important to ensure their protection and conservation.Centro de Investigaciones Geológica
Quid: observatorio de medios
El informe está dividido en cuatro apartados:
“Derecho a la información y transparencia”, “La televisión
mexicana”, “Empresas y prácticas periodísticas” y “Los
que se fueron”. En el primero de ellos se presenta
un texto que ayuda a entender cuál
es el momento en el que se encuentran las propuestas legislativas
para regular a los medios y las telecomunicaciones
en México, y una evaluación de los primeros
cinco años del Instituto de Transparencia e Información
Pública de Jalisco. El segundo apartado del informe es ecléctico, pues se compone de artículos que trabajan distintas temáticas
de la televisión:la estructura y oferta de la televisión en nuestro
país (en particular en la ciudad de Guadalajara), la televisión por cable (enfatizando el caso de Megacable), un recuento de
cómo se gestó el Canal 44 y de sus prospectivas en 2011, y
los mundiales de futbol. La tercera parte del informe documenta algunas de las
situaciones más importantes que se viven en el periodismo
local: estos trabajos presentan sistemas en crisis (alta vulnerabilidad de los periodistas mexicanos ante un clima de violencia que lejos de
disminuir va en aumento, y la participación,
por acción u omisión, del Estado mexicano en la sistemática
violación de los derechos de quienes dedican su
vida al trabajo periodístico.
Los siguientes artículos tratan sobre las transformaciones de las empresas periodísticas,
particularmente las del sector de la prensa
escrita: la rápida e inexorable desaparición de los suplementos
culturales, y una radiografía sobre las formas de producción de algunas
secciones internacionales de los periódicos tapatíos.
Al final se presentan las semblanzas de José Galindo, Raúl Mora Lomelí, S.J., Tomás Eloy Martínez y Juan Pablo Rosell.ITESO, A.C
Positive and negative well-being and objectively measured sedentary behaviour in older adults: evidence from three cohorts
Background:
Sedentary behaviour is related to poorer health independently of time spent in moderate to vigorous physical activity. The aim of this study was to investigate whether wellbeing or symptoms of anxiety or depression predict sedentary behaviour in older adults.
Method:
Participants were drawn from the Lothian Birth Cohort 1936 (LBC1936) (n = 271), and the West of Scotland Twenty-07 1950s (n = 309) and 1930s (n = 118) cohorts. Sedentary outcomes, sedentary time, and number of sit-to-stand transitions, were measured with a three-dimensional accelerometer (activPAL activity monitor) worn for 7 days. In the Twenty-07 cohorts, symptoms of anxiety and depression were assessed in 2008 and sedentary outcomes were assessed ~ 8 years later in 2015 and 2016. In the LBC1936 cohort, wellbeing and symptoms of anxiety and depression were assessed concurrently with sedentary behaviour in 2015 and 2016. We tested for an association between wellbeing, anxiety or depression and the sedentary outcomes using multivariate regression analysis.
Results:
We observed no association between wellbeing or symptoms of anxiety and the sedentary outcomes. Symptoms of depression were positively associated with sedentary time in the LBC1936 and Twenty-07 1950s cohort, and negatively associated with number of sit-to-stand transitions in the LBC1936. Meta-analytic estimates of the association between depressive symptoms and sedentary time or number of sit-to-stand transitions, adjusted for age, sex, BMI, long-standing illness, and education, were β = 0.11 (95% CI = 0.03, 0.18) and β = − 0.11 (95% CI = − 0.19, −0.03) respectively.
Conclusion:
Our findings indicate that depressive symptoms are positively associated with sedentary behavior. Future studies should investigate the causal direction of this association
Characterization of Microbialites and Microbial Mats of the Laguna Negra Hypersaline Lake (Puna of Catamarca, Argentina)
Microbial carbonates provide an invaluable tool to understand biogeochemical processes in aqueous systems, especially in lacustrine and marine environments. Lakes are strongly sensitive to climatically driven environmental changes, and microbialites have recently been shown to provide a record of these changes. Unraveling physicochemical and microbiological controls on carbonates textures and geochemistry is necessary to correctly interpret these signals and the microbial biosphere record within sedimentary carbonates. The Laguna Negra is a high-altitude hypersaline Andean lake (Puna of Catamarca, Argentina), where abundant carbonate precipitation takes place and makes this system an interesting example that preserves a spectrum of carbonate fabrics reflecting complex physical, chemical, and biological interactions. The extreme environmental conditions (high UV radiation, elevated salinity, and temperature extremes) make the Laguna Negra a good analogue to some Precambrian microbialites (e.g., Tumbiana Fm., Archean, Australia). In addition, the discovery of ancient evaporating playa-lake systems on Mars’ surface (e.g., ShalbatanaVallis, Noachian, Mars) highlights the potential of Laguna Negra to provide insight into biosignature preservation in similar environments, in both terrestrial and extraterrestrial settings, given that microbial processes in the Laguna Negra can be studied with remarkable detail.Fil: Boidi, Flavia Jaquelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Mlewski, Estela Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Gomez, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Gérard, Emmanuelle. Centre National de la Recherche Scientifique; Franci
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