Rodriguez-Perez M.A.,National Polytechnic Institute of Mexico |
Rodriguez-Perez M.A.,Institute Salud Carlos III |
Fernandez-Santos N.A.,Secretaria de Salud |
Orozco-Algarra M.E.,Secretaria de Salud |
And 10 more authors.
PLoS Neglected Tropical Diseases | Year: 2015
Background Mexico is one of the six countries formerly endemic for onchocerciasis in Latin America. Transmission has been interrupted in the three endemic foci of that country and mass drug distribution has ceased. Three years after mass drug distribution ended, post-treatment surveillance (PTS) surveys were undertaken which employed entomological indicators to check for transmission recrudescence. Methodology/Principal findings In-depth entomologic assessments were performed in 18 communities in the three endemic foci of Mexico. None of the 108,212 Simulium ochraceum s.l. collected from the three foci were found to contain parasite DNA when tested by polymerase chain reaction-enzymelinked immunosorbent assay (PCR-ELISA), resulting in a maximum upper bound of the 95% confidence interval (95%-ULCI) of the infective rate in the vectors of 0.035/2,000 flies examined. This is an order of magnitude below the threshold of a 95%-ULCI of less than one infective fly per 2,000 flies tested, the current entomological criterion for interruption of transmission developed by the international community. The point estimate of seasonal transmission potential (STP) was zero, and the upper bound of the 95% confidence interval for the STP ranged from 1.2 to 1.7 L3/person/season in the different foci. This value is below all previous estimates for the minimum transmission potential required to maintain the parasite population. Conclusions/Significance The results from the in-depth entomological post treatment surveillance surveys strongly suggest that transmission has not resumed in the three foci of Mexico during the three years since the last distribution of ivermectin occurred; it was concluded that transmission remains undetectable without intervention, and Onchocerca volvulus has been eliminated from Mexico. © 2015 Rodríguez-Pérez et al.
Naranjo M.,Consejeria de Educacion |
Castro M.A.,University of Seville |
Cota A.,Laboratorio Of Rayos X Citius |
Pavon E.,University of Seville |
And 3 more authors.
Microporous and Mesoporous Materials | Year: 2014
Synthesis of Na-Mica-4 has been achieved by a "mix and calcine" method using sodalite and magnesium fluoride as the only precursors. Previous research found sodalite as a key intermediate reaction product in the formation of Na-Mica-4 when the NaCl melt method was employed. Similarities in structure, chemical composition and cation distribution in products using the proposed method and the NaCl melt method are described and suggest that Na-Mica-4 is a very stable product. The use of sodalite as precursor provokes microporous formation in the final mica. The absence of excess Na leads to a lower particle size and to the presence of less impurity in the calcined product. Different sodalites could be used in the synthesis of different Na-Mica-4 with presumably different physicochemical properties. © 2013 Elsevier Inc. All rights reserved.
Talavera J.A.,University of La Laguna |
Perez D.I.,Consejeria de Educacion
Systematics and Biodiversity | Year: 2011
This is an investigation of the earthworm species identified in the evergreen laurel forests of La Palma and Hierro, characterised by the presence of Palaearctic species and to a lesser extent by an exotic component of different origins such as Amynthas corticis (native to Southeast Asia), Microscolex phosphoreus (South America) and Ocnerodrilus occidentalis (Central America). There is little evidence of local speciation, confirming that this ancient forest (more than 300 000 years old) does not harbour endemic species. Soil pH and moisture influence the spatial ordination of some earthworm species. However, anthropogenic disturbance, greatly intensified since the fifteenth century, emerges as the strongest factor to explain their distribution, particularly of the tropical invasives, e.g. A. corticis and O. occidentalis, which once established are difficult to remove. Species such as the Eiseniella tetraedra and Heraclescolex moebii complex maintain narrow microhabitat preferences and their current distribution and perhaps subsistence is threatened, mainly due to the overexploited water resources. The colonisation history of earthworms can be linked with the human settlers who began to arrive almost three millennia ago, bringing rootstocks of some of their habitual crops and domestic animals. Faunistic similarities are found with those Southern Iberian, Mediterranean basin and Maghreb areas that during the Miocene harboured humid subtropical Tertiary-Tethian flora, now largely extinct. © 2011 The Natural History Museum.
PubMed | Complutense University of Madrid and Consejeria de Educacion
Type: | Journal: Revista de neurologia | Year: 2016
The N200 and P300 evoked potentials have proved a useful tool in monitoring children with attention deficit disorder (ADD).To assess brain information processing by the N200 and P300 in touch modality in children with ADD.The P300 and N200 components to oddball tactile stimulation paradigm were recorded in an experimental group of 17 children with ADD at the beginning and the end of the daily training tactile stimulation, another 12 children with ADD and 21 control children without ADD who no received tactile stimulation. Three groups aged between 7 and 11 years.Results show a significant decrease in latency of N200 and P300 waves in the experimental group at the study end. N200 significant differences in the experimental group temporal parietal and occipital areas were found, while the differences in the P300 are located in postcentral and parietal areas.Systematic, orderly and organized tactile stimulation in children with ADD can be effective to improve N200-P300 latencies providing greater parietal brain plasticity, associated to perceptive attention.
Parra J.A.G.,University of Almeria |
Ros M.F.,Consejeria de Educacion |
Castellano N.N.,University of Almeria |
Salvador R.M.G.,University of Almeria
IEEE Transactions on Instrumentation and Measurement | Year: 2015
Schumann resonances are very weak natural electromagnetic signals produced in the earth-ionosphere cavity located in the extremely low frequency (ELF) band (7-60 Hz), and the sensors that measure them produce amplitudes of few microvolts. Strong signals from power lines (50-60 Hz) occur in the same frequency range. Amplification techniques play a key role in acquiring resonance modes with the best signal-To-noise (S/N) ratio. This paper presents a study of the various structures of amplification systems that optimize the S/N ratio for the signal of interest. The aim of this paper is to measure all possible resonance modes with low time acquisition. To this end, we compare four instrumentation amplifiers and design a new indirect method for obtaining the noise floor of the system with sensors manufactured on magnetic cores that are several meters long. We present the measurements of the Schumann resonance achieved using these techniques at the ELF electromagnetic wave observatory at Calar Alto (Spain). The solutions adopted allow measurement of seven resonance modes with an acquisition time of 30 min, where the S/N ratio in the fundamental mode was 39 dB. © 1963-2012 IEEE.
Vera J.A.,Consejeria de Educacion |
Vera J.A.,Technical University of Cartagena
Multibody System Dynamics | Year: 2010
In this paper, we consider the noncanonical Hamiltonian dynamics of a gyrostat in the three-body problem. By means of geometric-mechanics methods, we study the approximate Poisson dynamics that arises when we develop the potential of the system in series of Legendre and truncate this in an arbitrary order k. After reduction of the dynamics by means of the two symmetries of the system, the existence and number of equilibria that we denominate of Lagrangian type in analogy with classic results on the topic, are considered. Necessary and sufficient conditions are established for their existence in an approximate dynamics of order k, and explicit expressions of these equilibria are given; this being useful for the subsequent study of the stability of these equilibria. The number of Lagrangian equilibria is thoroughly studied in approximate dynamics of orders zero and one. The main result of this work indicates that the number of Lagrangian equilibria in an approximate dynamics of order k for k ≥ 1 is independent of the order of truncation of the potential, if the gyrostat S0 is almost spherical. In relation to the stability of these equilibria, necessary and sufficient conditions are given for linear stability of Lagrangian equilibria when the gyrostat is almost spherical. The rotational Poisson dynamics of the gyrostat placed at an Lagrangian equilibrium is explored and the study of nonlinear stability conditions is considered. In this way, we generalize the classical results on equilibria of the three-body problem and many results provided by other authors using more classical techniques for the case of rigid bodies. © Springer Science+Business Media B.V. 2009.
PubMed | University of Jaén, Autonomous University of Chile and Consejeria de Educacion
Type: Journal Article | Journal: Nutricion hospitalaria | Year: 2015
the present study aims to determine the test-retest reliability of the Fitness Test Battery in children aged 3-6 years.a total of 553 children voluntarily participated in the current study; all children were aged 3 to 6 years. Demographic characteristics reveal that 274 children were male (age: 4.63 0.94 years old, Body max index [BMI] = 16.30 2.07 kg/m2), and 279 were female (age 4.70 0.97 years old, BMI = 16.28 2.09 kg/m2), and they were selected from 8 schools in southern Spain. All selected tests for the Fitness Test Battery, except the 10 x 20 metres (m) test that was designed ad hoc for this study, have been used in previous studies and are focused on testing basic components of physical condition and motor development such as endurance, strength, speed, reaction time and balance (10 x 20 m, Standing Broad Jump, 20 m running speed, Ruler drop test and Balance).the results obtained in this study indicate that the Fitness Test Battery has obtained adequate reliability parameters, and is able to discriminate with age among the different tests in healthy children between 3 and 6 years old. The tests used were safe, easy to perform, very acceptable and understandable by children.the Fitness Test Battery is a valid, reliable and easy to assess the physical fitness of pre-schoolers children.
Patterns of ICT-based learning (Moodle and Mahara 2.0) for contents of anatomy, physiology and health in scholar physical education lessons [Diseños de aprendizaje basados en las TIC (Moodle 2.0 y Mahara) para contenidos de anatomía, fisiología y salud en las clases de educación física escolar]
Granero-Gallegos A.,Consejeria de Educacion |
Baena-Extremera A.,University of Murcia
International Journal of Morphology | Year: 2015
The aim of this study was to compare the learning performance of students in secondary physical education lessons after receiving two teaching units in which the theoretical content of Anatomy, Physiology and Body Health, was given with the support of Moodle and Mahara 2.0. We used a quasi-experimental, descriptive and sectional design. The total sample consisted of 122 students in the 4th year of Secondary Education (ESO), 57 males and 65 females. We worked with an experimental group of 72 people who received theoretical training of two teaching units supported by Moodle 2.0 and Mahara, and a control group of 50 students who received no support classes of virtual platforms. Practical classes were similar in both groups. The measuring instrument was a multiple choice assessment questionnaire. Pretest measure was obtained before training and other measures after the intervention (posttest). Improvements were analyzed in each group according to the theoretical method used and compared the results obtained by analysis of gain score (posttest-pretest) with T-test for related samples. After intervention, the average score is greater than fifty percent in both groups, without significant gain scores of physiology, anatomy and health in the experimental group. These data confirm that the use of LMS platforms contribute more to the acquisition of this content among students. An important contribution in the field of EF is the fact that less theoretical contact hours are necessary, as the students work on time on the practical elective content made in class, thus having more hours of practice teaching time. © 2015, Universidad de la Frontera. All rights reserved.
Roman rotary quern with inscription Turro from the hillfort of San Chuis (San Martín de Beduledo, Allande, Asturias) [Molino rotatorio romano con Inscripción turro procedente del castro de san chuis (San Martín de Beduledo, Allande, Asturias)]
Salido Dominguez J.,Escuela Espanola de Historia y Arqueologia en Rome CSIC |
Villa Valdes A.,Consejeria de Educacion
Zephyrus | Year: 2014
This paper presents an analysis of a catillus fragment corresponding to a rotary grain mill from the Roman era found in the San Chuis Fort in Allande, Asturias. One distinctive feature of this grain mill is the fact that it contains an inscription that mentions the word Turro. Among the possible interpretations of this epigraph, we advocate the hypothesis that this word designates the owner or user of mola manuaria. To support this theory, we analyze other mills with inscriptions found in the Roman world that refer to concrete military units -contubernium, centuria, turma- or prayers and other records from the civilian circles. In the absence of any military structure, we argue that this inscription indicates there were no military units present in that fort during that time, or that at least they didn't adhere to a particular military hierarchy, even though this does not refute the fact that the civilian population lived in a heavily militarized area. © Universidad de Salamanca.
Test-retest reliability of a field-based physical fitness assessment for children aged 3-6 years [Fiabilidad test-retest de una batería de evaluación de la condición físicomotora en niños de 3 a 6 años]
Latorre Roman P.A.,University of JaenJaen |
Lopez D.M.,Consejeria de Educacion |
Sanchez M.F.,University of JaenJaen |
Sanchez J.S.,Autonomous University of Chile |
And 2 more authors.
Nutricion Hospitalaria | Year: 2015
Objective: the present study aims to determine the test-retest reliability of the Fitness Test Battery in children aged 3-6 years. Methods: a total of 553 children voluntarily participated in the current study; all children were aged 3 to 6 years. Demographic characteristics reveal that 274 children were male (age: 4.63 ± 0.94 years old, Body max index [BMI] = 16.30 ± 2.07 kg/m2), and 279 were female (age 4.70 ± 0.97 years old, BMI = 16.28 ± 2.09 kg/m2), and they were selected from 8 schools in southern Spain. All selected tests for the Fitness Test Battery, except the 10 x 20 metres (m) test that was designed ad hoc for this study, have been used in previous studies and are focused on testing basic components of physical condition and motor development such as endurance, strength, speed, reaction time and balance (10 x 20 m, Standing Broad Jump, 20 m running speed, Ruler drop test and Balance). Results: the results obtained in this study indicate that the Fitness Test Battery has obtained adequate reliability parameters, and is able to discriminate with age among the different tests in healthy children between 3 and 6 years old. The tests used were safe, easy to perform, very acceptable and understandable by children. Conclusion: the Fitness Test Battery is a valid, reliable and easy to assess the physical fitness of pre-schoolers children. © 2015, Grupo Aula Medica S.A. All Rights Reserved.