Relationship between self-efficacy and anxiety towards science in high school studentes

El aprendizaje de las ciencias está determinado por factores personales, como la autoeficacia, que se manifiestan durante el estudio de materias de Física, Química, Biología y Ciencias de la Tierra y del Ambiente. En este trabajo se describe el tipo de relación entre la autoeficacia y la ansiedad ante las ciencias, para lo que se dispuso de una muestra aleatoria de alumnos del bachillerato (N = 215, con edades de 15 a 21 años) a los que, mediante encuesta tipo Likert, se les aplicó el instrumento de Autoeficacia General de Baessler y Schwarzer y el de Ansiedad ante las Ciencias de Britner y Pajares. Los resultados mostraron correlación en dirección negativa (d de Somers = -.305), con buen nivel de significancia (Sig. = .000) para las variables señaladas. La población analizada muestra índices positivos de autoficacia general, lo que explica los bajos niveles de ansiedad.Science learning is influenced by such personal factors as self-efficacy that are manifested during the study of subjects like Physics, Chemistry, Biology, and Earth and Environmental Sciences. This study explores the relationship between self-efficacy and anxiety towards science in a random sample of high-school students (N = 215, ages from 15 to 21) to which the Baessler’s and Schwarcer’s Self-Efficacy Scale and the Britner’s and Pajares’ Scale of Anxiety towards Science were administered. Results show a negative correlation (Somers’ d = -0.305) with a good level of significance (Sig. = .000) between the variables examined. Students show positive indexes of general self-efficacy, which explain the low levels on anxiety

Influence of a physical exercise until exhaustion in normothermic and hyperthermic conditions on serum, erythrocyte and urinary concentrations of magnesium and phosphorus

Aim: The aim of this study was to evaluate the effect of the performance of a maximal exercise test until exhaustion in normothermic and hyperthermic conditions on body concentrations of magnesium (Mg) and phosphorus (P). Methods: 19 adult males (age: 22.58 ± 1.05 years) performed two maximum incremental exercise tests on a cycloergometer separated by 48 h. The first was performed in normothermia (22 ± 2 °C) and the second in hyperthermic conditions induced with a sauna (42 ± 2 °C). Blood and urine samples were taken before and after each test. Results: The tests in hyperthermia did not produce ergospirometric alterations or a noticeable cardiovascular drift. Serum Mg concentrations underwent a reduction after the stress test in hyperthermia (p > 0.05) but not in normothermia. Nevertheless, urinary and erythrocyte concentrations of Mg, and urinary, erythrocyte and serum concentrations of P did not undergo alterations in either conditions. Conclusions: It seems that exercise in hyperthermic conditions induces a tissue redistribution of Mg in the body, a fact which was not observed in normothermic conditions

Seric concentrations of copper, chromium, manganesum, nickel and selenium in aerobic, anaerobic and mixed professional sportsmen

FUNDAMENTOS: El objetivo del presente estudio fue determinar los cambios en las concentraciones séricas de los oligoelementos Cooper (Cu), Cromo (Cr), Manganeso (Mn), Níquel (Ni) y Selenio (Se) en deportistas de alto nivel. MÉTODOS: Ochenta atletas profesionales de diferentes modalidades metabólicas, fueron reclutados antes del comienzo de su período de entrenamiento. Treinta y un participantes sedentarios de la misma área geográfica constituyeron el grupo de control. El análisis de Cu, Cr, Mn, Ni y Se fue realizado por la Espectrometría de Masa de Plasma Acoplado Inductivamente (ICP-MS). RESULTADOS: Se encontraron mayores concentraciones de Cr (p < 0,001), Mn (p < 0,085), y Ni (p < 0,001) en deportistas en comparación con los controles, inversamente, los valores de Se fueron menores (p < 0,001) entre los deportistas. Cuando se clasificó a los deportistas por modalidades metabólicas, se encontró que el grupo aeróbico-anaeróbico tenía mayores (p < 0,01) concentraciones de Cu en los controles y en los otros deportistas. Los valores más altos de Cr se encontraron en los participantes aeróbicos. Para el Mn, los mayores niveles se encontraron en los grupos aeróbicos y aeróbico-anaeróbicos también (p < 0,001). Los niveles más bajos de Se se encontraron en deportistas anaeróbicos (p < 0,001). CONCLUSIÓN: Esta investigación demostró que el entrenamiento físico continuo diario induce alteraciones en las concentraciones de minerales esenciales en el suero, así como que estos cambios pueden ser dependientes de la modalidad de ejercicio practicada.BACKGROUND: The aim of the present study was to determine changes in serum concentrations of trace elements Cooper (Cu), Chromiun (Cr), Manganesum (Mn), Nickel (Ni) and Selenium (Se) in high-level sportsmen. METHODS: Eighty professional athletes of different metabolic modalities, were recruited before the start of their training period. Thirty one sedentary participants of the same geographic area constituted the control group. Cu, Cr, Mn, Ni and Se analysis was performed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). RESULTS: Higher concentrations of Cr (p < 0.001), Mn (p < 0.085), and Ni (p < 0.001) were found in sportsmen in comparison to controls, inversely, Se values were lower (p < 0.001) among sportsmen. When sportsmen were classified by metabolic modalities, it was found that aerobic-anaerobic group had higher (p < 0.01) Cu concentrations tan controls and the other sportsmen. The highest Cr values were found in aerobic participants. For Mn, the major levels were found in aerobic and aerobic-anaerobic groups as well (p < 0.001). The lowest Se levels were found among anaerobic sportsmen (p < 0.001). CONCLUSION: This research showed that daily, continuum physical training induced alterations in serum essential minerals concentrations, as well as that these changes can be dependent of the exercise modality practiced.peerReviewe

An Architecture to infer Business Rules from Event Condition Action Rules implemented in the Persistence Layer

The business rules that govern the behaviour of a business process can be hardcoded in different ways in a software application. The modernization or improvement of these applications to a process-oriented perspective implies typically the modification of the business rules. Frequently, legacy systems are not well-documented, and almost always, the documentation they have is not updated. As a consequence many times is necessary the analysis of source code and databases structures to be transformed into a business language more understandable by the business experts involved in the modernization process. Database triggers are one of the artefacts in which business rules are hardcoded. We focus on this kind of artefacts, having in mind to avoid the manual analysis of the triggers by a database expert, and bringing it closer to business experts. To get this aim we need to discover business rules that are hardcoded in triggers, and translate it into vocabularies that are commonly used by business experts. In this paper we propose an ADM-based architecture to discover business rules and rewrite then into a language that can be understood by the business experts.Ministerio de Ciencia y Tecnología TIN2009-13714Ministerio de Ciencia y Tecnología TIN2010-20057-C03-02Ministerio de Ciencia y Tecnología TIN2010-21744-C02-

Primary melanoma of the nasal mucosa: case presentation and systematic review of the literature

Introducción: Los melanomas de mucosa nasosinusales, representa una de las patologías de menor proporción en las tumoraciones de nariz y senos paranasales y como consecuencia diagnósticos tardíos. Reporte de caso: paciente masculino de la sexta década de la vida, que inicio con cuadro de obstrucción nasal y epistaxis leve, fue enviado para su valoración nuestro hospital de tercer nivel, donde se sometió a biopsia, presentando el resultado histopatológico de melanoma de mucosa nasal. Conclusión: las lesiones se presentaron principalmente como epistaxis y obstrucción nasal, involucraron a la cavidad nasal y senos paranasales y el lado izquierdo fue el más común involucrado. Los estadios de la enfermedad avanzada y metástasis a distancia se presentaron con gran frecuencia y en general con una pobre supervivencia a 5 años.Background: Mucosal melanoma represents one of the pathologies with a lower proportion among tumors of the nose and paranasal sinuses and as a consequence late diagnoses. Objective: To present the case of a male patient in the sixth decade of life with nasal mucosal melanoma and a systematic review of studies reported from 2016 to 2021. Results: The systematic search was carried out from January 2016 to December 2021 in PubMed, Google Scholar and Elsevier; 147 articles that meet the 19 criteria were located. Conclusion: The injury was prevalent in women, there was a higher prevalence in the seventh and eighth decades. The main lesions were epistaxis and nasal obstruction, involved the nasal cavity and paranasal sinuses and the left side was the most common involved. There was high frequency of advanced disease stages and distant metastases and generally with poor 5-year survival

Effects of a physical activity program on depression parameters in postmenopausal women

Aim: The aim of this survey was to meet the exercise-induced psychological modifications in postmenopausal women. Method: 30 postmenopausal women (54,00 ± 5,6 years) participated in this survey, they were classified in two groups: Depression Group (DG) (n=15) and Control Group (CG) (n=15). The program of physical activity had a duration of 6 months and consisted of low to moderate physical exercises (50-60% of the maximal hearth rate of reserve) and with a weekly frequency of 4 days. Results: the obtained results showed no improvement in the depression indexes, however a positive trend in the parameters of depression has been observed. Conclusion: results indicate that regular, systematic low intensity physical training, 4 days/week is not enough to reduce the depressive symptoms or to improve the mood state in postmenopausal depressive women. It is necessary more studies with different exercise intensity to clarify the effect on depression

De la responsabilidad social empresarial a la responsabilidad ambiental universitaria

Este artículo indaga inicialmente por la categoría Responsabilidad Social Universitaria, cuyo primer hallazgo identifica dos grandes tradiciones de su emergencia, una derivada-de, que se fundamenta en tres perspectivas de la Responsabilidad Social Empresarial: teorías de la agencia, teorías de la legitimidad y teorías de la institucionalidad; y la otra tradición es denominada, originaria-en la universidad latinoamericana, que promueve el surgimiento de la Responsabilidad Ambiental Universitaria. A partir de un enfoque cualitativo el diseño documental que permite el abordaje de diversas bases de datos: informes, proyectos y programas ambientales en el interior de un caso de manejo de residuos sólidos en una universidad colombiana. Se puede destacar que en el marco general de las prácticas y acciones ambientales de la universidad se hibridan de forma alternada perspectivas de Responsabilidad Ambiental Universitaria matizadas desde las perspectivas de la Responsabilidad Social Empresarial y la Responsabilidad Social Universitaria.This article initially investigates the category of University Social Responsibility, whose first finding identifies two great traditions of its emergence, one derived from three perspectives of Corporate Social Responsibility: theories of the agency, theories of legitimacy and theories of the institutionality; and another original tradition-in the Latin American University that promotes the emergence of the University Environmental Responsibility. From a qualitative approach, the documentary design allows the approach of diverse data bases: reports, projects and environmental programs within a solid waste management case in a Colombian university. It is possible to emphasize that in the general framework of the environmental practices of the university perspectives of University Environmental Responsibility are alternately hybridized, nuanced from the perspectives of the Corporate Social Responsibility and the University Social Responsibility

Effects of Twelve Sessions of High-Temperature Sauna Baths on Body Composition in Healthy Young Men

The health benefits of sauna baths are attracting ever-increasing interest. Therefore, the purpose of this study was to evaluate the effects of 12 high-temperature (100 °C) sauna baths on body composition of 23 healthy young men, divided into a control group (CG) and a sauna group (SG). Both groups were initially evaluated by dual-energy X-ray absorptiometry (DXA), after which the SG experienced 12 sessions of sauna baths at high temperatures (100 °C). Initial measurements were carried out after the sauna sessions and after two weeks of decay in both groups. The muscle mass of the right leg (pre vs. decay: 9.50 (5.59) vs. 10.52 (5.15); p < 0.05; Δ 1.07%), bone mineral density (pre vs. post: 1.221 (0.35) vs. 1.315 (0.45); p < 0.05; Δ 7.7%) and bone mineral content (pre vs. post: 0.470 (0.21) vs. 0.499 (0.22); p < 0.05; Δ 6.17%) of the left leg increased in the SG after the sauna baths. It seems that exposure to heat at high temperatures could produce improvements in bone and muscle mass

Noise-assisted energy transport in electrical oscillator networks with off-diagonal dynamical disorder

Noise is generally thought as detrimental for energy transport in coupled oscillator networks. However, it has been shown that for certain coherently evolving systems, the presence of noise can enhance, somehow unexpectedly, their transport efficiency; a phenomenon called environment-assisted quantum transport (ENAQT) or dephasing-assisted transport. Here, we report on the experimental observation of such effect in a network of coupled electrical oscillators. We demonstrate that by introducing stochastic fluctuations in one of the couplings of the network, a relative enhancement in the energy transport efficiency of 22.5 ± 3.6% can be observed.Peer ReviewedPostprint (published version