El piearcts en querétaro - tercera etapa

Se reporta el avance de la tercera etapa del PIEARCTS en Querétaro, México: análisis estadístico e interpretación de datos de las once instituciones en donde se aplicó el COCTS a un total de 1374 sujetos. Se establece un horizonte de interpretación que integra los datos cuantitativos con la reflexión cualitativa, la cual está amparada en el contexto socio-histórico de cada institución y en la caracterización de cada grupo muestral. Los datos se analizan de acuerdo con el tipo de institución: tecnológica o humanística; nivel educativo: licenciatura, bachillerato, técnico o normal y con los grupos encuestados: estudiantes o profesores, considerando los datos sociodemográficos incluidos en la encuesta. Se calculan los índices de plausibilidad, adecuación, ingenuidad y cultura científica para cada reactivo y para cada sujeto. Con ellos se hacen comparaciones entre grupos

Metamorphism on Chromite Ores from the Dobromirtsi Ultramafic Massif, Rhodope Mountains (SE Bulgaria)

Podiform chromitite bodies occur in highly serpentinized peridotites at Dobromirtsi Ultramafic Massif (Rhodope Mountains, southeastern Bulgaria). The ultramafic body is believed to represent a fragment of Palaeozoic ophiolite mantle. The ophiolite sequence is associated with greenschist - lower-temperature amphibolite facies metamorphosed rocks (biotitic gneisses hosting amphibolite). This association suggests that peridotites, chromitites and metamorphic rocks underwent a common metamorphic evolution. Chromitites at Dobromirtsi have been strongly altered. Their degree of alteration depends on the chromite/silicate ratio and to a lesser extent, on the size of chromitite bodies. Alteration is recorded in individual chromite grains in the form of optical and chemical zoning. Core to rim chemical trends are expressed by MgO- and Al2O3- impoverishment, mainly compensated by FeO and/or Fe2O3 increases. Such chemical variations correspond with three main alteration events. The first one was associated with ocean-floor metamorphism and was characterized by a lizardite replacement of olivine and the absence of chromite alteration. The second event took place during greenchist facies metamorphism. During this event, MgO- and SiO2-rich fluids (derived from low temperatura serpentinization of olivine and pyroxenes) reacted with chromite to form chlorite; as a consequence, chromite became altered to a FeO- and Cr2O3-rich, Al2O3-poor chromite. The third event, mainly developed during lower temperature amphibolite facies metamorphism, caused the replacement of the primary and previously altered chromite by Fe2O3-rich chromite (ferritchromite)

La Pedagogía Hospitalaria.

Sin resume

Effects of Supervised Multimodal Exercise Interventions on Cancer-Related Fatigue: Systematic Review and Meta-Analysis of Randomized Controlled Trials

Objective. Cancer-related fatigue (CRF) is the most common and devastating problem in cancer patients even after successful treatment. This study aimed to determine the effects of supervised multimodal exercise interventions on cancer-related fatigue through a systematic review and meta-analysis. Design. A systematic review was conducted to determine the effectiveness of multimodal exercise interventions on CRF. Databases of PubMed, CENTRAL, EMBASE, and OVID were searched between January and March 2014 to retrieve randomized controlled trials. Risk of bias was evaluated using the PEDro scale. Results. Nine studies (n=772) were included in both systematic review and meta-analysis. Multimodal interventions including aerobic exercise, resistance training, and stretching improved CRF symptoms (SMD=-0,23; 95% CI: −0.37 to −0.09; P=0,001). These effects were also significant in patients undergoing chemotherapy (P<0,0001). Nonsignificant differences were found for resistance training interventions (P=0,30). Slight evidence of publication bias was observed (P=0,04). The studies had a low risk of bias (PEDro scale mean score of 6.4 (standard deviation (SD) ± 1.0)). Conclusion. Supervised multimodal exercise interventions including aerobic, resistance, and stretching exercises are effective in controlling CRF. These findings suggest that these exercise protocols should be included as a crucial part of the rehabilitation programs for cancer survivors and patients during anticancer treatments.This paper and own authors data described in this paper were supported by the grant from Vicerrectoría de Investigaciones, Universidad de Santo Tomás (Contract no. 617-3-2013)

3D MODELLING OF THE NEGRO TOWER FOR ITS COMPREHENSIVE ANALYSIS AND A CONSERVATION PROPOSAL

Abstract. The Negro Tower, in El Algar, Cartagena (Region of Murcia, Spain), is a building which dates to 1585. It is a tower built in a rural environment, inland from the coast, to alert and protect the population from pirate attacks. It was part of the network of watchtowers and defense posts along the coast of Murcia built between the sixteenth and seventeenth centuries. The tower is protected as a historical monument, but its state of conservation is very poor. For this reason, a comprehensive study has been carried out to ensure its correct restoration and future conservation. Historical and constructive analysis has allowed us to discover the social, cultural and architectural characteristics of the tower. Digital photogrammetry and 3D laser scanning compatible with classic topography have been used for the graphic survey of the tower. All this information has permitted the elaboration of thorough three-dimensional modelling and the proposal of a volumetric recomposition of the tower. The presentation will set out the working methodology followed as well as the important results achieved. This research work aims to contribute to the recognition and correct conservation of the Tower. The graphic survey and the three-dimensional model obtained will allow the recovery of the tower and its integration into the natural environment

Weak localization and electron-electron interaction in the layered compound CuFeTe2

The study of the electrical properties of the layered compound CuFeTe2 shows that there are three well differentiated conduction regimes depending on the temperature. Below TSDW ~ 300 K the formation of a Spin Density Wave (SDW) state has been reported, in the frame of a metal to non metal transition. Below 100 K (~ TSDW/3) the behavior of the electrical resistance as a function of temperature and magnetic field is attributable to the still present not condensed electrons (quasi particles) in the SDW state. At low temperatures (1.8 - 20K), low current (< 1 mA) and magnetic eld (0<H <6 Tesla), the effects of weak localization and electronic interactions in two dimensions appear. At intermediate temperatures (20 < T < 100 K) a hopping conductivity behavior is observed

Las ilustraciones de los ciclos biogeoquímicos del carbono y nitrógeno en los textos de secundaria

Las ilustraciones de los textos son un instrumento básico en la enseñanza de los ciclos biogeoquímicos. Presentamos un análisis de las ilustraciones de los ciclos del carbono y del nitrógeno en 16 textos de educación secundaria (6 del sistema BUP y 10 del sistema ESO). Los resultados mostrados y su comparación con las ilustraciones de los manuales superiores de Ecología nos permiten discutir sobre la mejora en las ilustraciones de los textos en la enseñanza de la Biología.Palabras clave: Ciclos de la materia; Análisis de libros de texto; Análisis de imágenes.Illustrations of carbon and nitrogen biogeochemical cycles in texts of secondary educationText Illustrations are a basic tool for the material cycling teaching. We make an analysis of carbon and nitrogen cycle illustrations in 16 textbooks. The results are showed and compared with Ecology textbooks. The comparison facilitates to discuss about the improvement in the use of text illustration for the teaching of Biology.Key words: Material cycling; Textbooks analysis; Text Illustration analysis

Evolución y análisis filogenético de las comunidades microbianas desarrolladas como respuesta al aumento de los niveles de fenantreno en un suelo contaminado por PAHs

Trabajo presentado al citado Congreso que tuvo lugar del 21-24, de septiembre, 2009, en Almería, España.Las comunidades microbianas de los suelos contaminados con hidrocarburos aromáticos poli cíclicos (PAHs) presentan gran biodiversidad. Esta biodiversidad puede relacionarse con la respuesta a niveles elevados de PAHs. En este trabajo se presenta el estudio y la caracterización de las comunidades microbianas de un suelo contaminado principalmente con hidrocarburos aromáticos poli cíclicos (5LO), mediante técnicas basadas en ADN y técnicas de cultivo. Se ha estudiado la evolución de las comunidades como respuesta al aumento de la concentración de fenantreno.Peer reviewe

Design and validity of a choice-modeling questionnaire to analyze the feasibility of implementing physical activity on prescription at primary health-care settings

Worldwide health policies are trying to implement physical activity on prescription (PAP) at healthcare settings. However, there is not a proper methodology to analyze PHC organizational staff factors. This study aims to validate two questionnaires to assess the self-perception of nurses and general practitioners to implement PAP at primary healthcare (PHC) settings. The designed choice-modeling Google-form questionnaire was sent to 11 expert nurses and 11 expert sports medicine physicians. Experts evaluated each question on a 1–5 points Likert-type scale according to their expertise. Aiken’s V coefficient values =0.75 were used to validate separately each question using the Visual Basic-6.0 software. A total of 10 sports medicine physicians and 10 nurses with 28.4 ± 5.1 y and 16.3 ± 11.8 y of PAP experience, respectively, validated the questionnaire. One expert in each group was not considered for offering 3 ± SD answers in =2 questions respect to the mean of the rest of experts. Final Aiken’s V coefficient values were 0.89 (0.77–1.00) for the nurses’ questionnaire and 0.84 (0.77–0.95) for the physicians’ one. The questionnaires designed to assess the PAP self-perception of PHC nurses and physicians were validated. This methodology could be used to analyze PHC organizational staff factors in order to achieve an efficient PAP implementation in other PHC contexts