1,073 research outputs found
Acciones técnico-tácticas, factores contextuales y rendimiento deportivo de los equipos de concacaf durante la clasificación a Rusia 2018
The objective of this study was to determine which technical-tactical actions and contextual factors were related to the sports performance of the CONCACAF national teams during the qualifying phase of the 2018 World Cup Russia. The statistics of the 10 matches played by each of 6 national teams team were used (30 matches, 60 observations). The results indicate that the technical-tactical actions that were related to the sport performance and that differentiated the classified and unclassified teams, as well as the teams that obtained victories with the that tied or lost, were: the goals, shots on target, passes, and possession of the ball, also these teams got more victories when playing from home. In conclusion, the technical-tactical actions related to performance coincide with those reported in the literature, moreover, the fact of playing at home represented an advantage for the teams.El objetivo de este estudio fue determinar cuáles acciones técnico-tácticas y factores contextuales se relacionaron con el rendimiento deportivo de las selecciones absolutas de CONCACAF durante la fase clasificatoria a la Copa Mundial de Rusia 2018. Se utilizaron las estadísticas de los 10 partidos jugados por cada una de los 6 equipos nacionales (30 partidos, 60 observaciones). Los resultados indican que las acciones técnico-tácticas que se relacionaron con el rendimiento y que diferenciaron a los equipos clasificados y no clasificados, así como a los equipos que obtenían victorias con los que empataban o perdían, fueron: los goles, remates a marco realizados, pases, y posesión de balón, asimismo estos equipos consiguieron mayor cantidad de victorias cuando jugaban de locales. En conclusión, las acciones técnico-tácticas relacionadas con el rendimiento coinciden con las reportadas en la literatura, además, el hecho de jugar de local representó una ventaja para los equipos
Restoration of european habitats in mainland, Portugal, using commercial seed mixtures. Considerations for its management and conservation
Permanent mountain pastures include meadows and other perennial pastures of high ecological,
economic, cultural and scenic value. Increasing desertification limits the maintenance and conservation
of its biodiversity and the associated landscape mosaic. A restoration experiment in permanent high
altitude grasslands in Beira Alta (Centre East (CE) mainland Portugal) was made, by sowing adequate
cultivars of existing grass and legume species. The main objectives addressed were: (1) comparison of
floristic composition between reference communities included in the previous habitats and the improved
communities; (2) evaluation of the success of sowing adequate cultivars of autochthonous species; (3)
evaluation of the establishment of target species in terms of the maintenance of floristic composition of
reference. The experiment was carried out in 2014 on nine farms situated in Beira Alta (Guarda District)
and the phytosociological method was applied in the floristic surveys. The sown species with highest
percentage of soil cover were Trifolium subterraneum, Lolium multiflorum, Ornithopus sativus and Trifolium
vesiculosum. In the priority habitat 6220 it was observed a re-establishment of many species in their
original composition and a high cover of several cultivars of Trifolium subterraneum. These results highlight
the importance of using cultivars of autochthonous species in the improvement of altitude pasturesinfo:eu-repo/semantics/publishedVersio
Phylogeny of Prokaryotes and Chloroplasts Revealed by a Simple Composition Approach on All Protein Sequences from Complete Genomes Without Sequence Alignment
The complete genomes of living organisms have provided much information on their phylogenetic relationships. Similarly, the complete genomes of chloroplasts have helped to resolve the evolution of this organelle in photosynthetic eukaryotes. In this paper we propose an alternative method of phylogenetic analysis using compositional statistics for all protein sequences from complete genomes. This new method is conceptually simpler than and computationally as fast as the one proposed by Qi et al. (2004b) and Chu et al. (2004). The same data sets used in Qi et al. (2004b) and Chu et al. (2004) are analyzed using the new method. Our distance-based phylogenic tree of the 109 prokaryotes and eukaryotes agrees with the biologists tree of life based on 16S rRNA comparison in a predominant majority of basic branching and most lower taxa. Our phylogenetic analysis also shows that the chloroplast genomes are separated to two major clades corresponding to chlorophytes s.l. and rhodophytes s.l. The interrelationships among the chloroplasts are largely in agreement with the current understanding on chloroplast evolution
What happens if you single out? An experiment
We present an experiment investigating the effects of singling out an individual on trust and trustworthiness. We find that (a) trustworthiness falls if there is a singled out subject; (b) non-singled out subjects discriminate against the singled out subject when they are not responsible of the distinct status of this person; (c) under a negative frame, the singled out subject returns significantly less; (d) under a positive frame, the singled out subject behaves bimodally, either selecting very low or very high return rates. Overall, singling out induces a negligible effect on trust but is potentially disruptive for trustworthiness
Beyond the required LISA free-fall performance: new LISA pathfinder results down to 20 μHz
In the months since the publication of the first results, the noise performance of LISA Pathfinder has improved because of reduced Brownian noise due to the continued decrease in pressure around the test masses, from a better correction of noninertial effects, and from a better calibration of the electrostatic force actuation. In addition, the availability of numerous long noise measurement runs, during which no perturbation is purposely applied to the test masses, has allowed the measurement of noise with good statistics down to 20 μHz. The Letter presents the measured differential acceleration noise figure, which is at (1.74±0.05) fm s^{-2}/sqrt[Hz] above 2 mHz and (6±1)×10 fm s^{-2}/sqrt[Hz] at 20 μHz, and discusses the physical sources for the measured noise. This performance provides an experimental benchmark demonstrating the ability to realize the low-frequency science potential of the LISA mission, recently selected by the European Space Agency
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The influence of the accessory genome on bacterial pathogen evolution
Bacterial pathogens exhibit significant variation in their genomic content of virulence factors. This reflects the abundance of strategies pathogens evolved to infect host organisms by suppressing host immunity. Molecular arms-races have been a strong driving force for the evolution of pathogenicity, with pathogens often encoding overlapping or redundant functions, such as type III protein secretion effectors and hosts encoding ever more sophisticated immune systems. The pathogens’ frequent exposure to other microbes, either in their host or in the environment, provides opportunities for the acquisition or interchange of mobile genetic elements. These DNA elements accessorise the core genome and can play major roles in shaping genome structure and altering the complement of virulence factors. Here, we review the different mobile genetic elements focusing on the more recent discoveries and highlighting their role in shaping bacterial pathogen evolution
Implementation of herd health program to improve survival of Boer goats in Malaysia.
A Boer goat breeding farm with 800 heads of breeder females, 50 breeder males, and 400 growing goats of various ages in Sabah, Malaysia was selected to study the effect of implementing herd health program. This included vaccination program against pneumonic mannheimiosis; fecal monitoring for helminthiasis, coccidiosis, and colibacillosis; and introduction of modified feeding regime comprised of day-time grazing and feeding of cut grass and supplemented feed. The herd health program was implemented in September 2007 and the impact was observed on body weight gains, body scoring, and annual mortality among adults and kids. It was found that implementation of herd health program significantly (p<0. 05) increased the average body weight gains in both adults and kids from 1. 8 g per kid and 0. 6 g per adult in 2006 to 3. 7 g per kid and 2. 2 g per adult in 2008. The percentage of adults with body scoring of <3 was significantly (p<0. 05) reduced from 82. 3% in 2006 to 77. 6% in 2007 and 4% in 2008. Similarly, the annual mortality rate was significantly (p<0. 05) reduced from 6. 5% among kids and 58. 2% among adults in 2006 to 12. 1% among kids and 10. 4% among adults in 2007, and to 9. 1% among kids and 1. 1% among adults in 2008. Therefore, it was concluded that implementation of herd health program significantly improved the survival and performance of goats
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