146 research outputs found

    CaH Rydberg Series, Oscillator Strengths and Photoionization Cross Sections from Molecular Quantum Defect and Dyson Orbital Theories

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    Producción CientíficaIn this work, electron-propagator methods are applied to the calculation of the ionization potential and vertical excitation energies for several Rydberg series of the CaH molecule. The present calculations cover more highly excited states than those previously reported. In particular, excitation energies for ns (n>5), np (n>5), nd (n>4) and nf Rydberg states are given. Oscillator strengths for electronic transitions involving Rydberg states of CaH, as well as photoionization cross sections for Rydberg channels, also have been determined by using the Molecular Quantum Defect Orbital approach. Good agreement has been found with the scarce comparative data that are available for oscillator strengths. To our knowledge, predictions of photoionization cross sections from the outermost orbital of CaH are made here for the first time. A Cooper minimum and mixed atomic orbital character in some of the Dyson orbitals are among the novel features of these present calculationsJunta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA330U13

    Tratamiento de la columna vertebral en la educación secundaria obligatoria: parte I - prevención y ejercicios poco recomendables

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    El dolor de espalda es uno de los motivos más frecuentes por los cuales se acude a la consulta médica y es preocupante la cada vez más temprana edad en la cual se presentan estos problemas. Ello impone la necesidad de dar a conocer a los alumnos de Educación Secundaria Obligatoria unos mínimos conocimientos acerca de la anatomía de la columna vertebral y ciertos recursos ergonómicos para adoptar actitudes posturales correctas. Por otro lado, el profesor de Educación Física ha de conocer cuáles son los ejercicios, de forma general, menos recomendables en la prevención de determinados problemas de espalda

    Tratamiento de la columna vertebral en la educación secundaria obligatoria: parte II - ejercicios recomendables

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    El dolor de espalda en personas adultas es producido, en numerosas ocasiones, por una inadecuada educación postural y una deficiente condición física. Esta situación provoca un desequilibrio muscular en aquellos grupos musculares responsables de mantener la postura. En la E.S.O, también se producen tales desequilibrios por lo que, como actitud preventiva y educadora, es recomendable tener en cuenta el tratamiento corporal que sufren los alumnos a lo largo del día y durante las clases de Educación Física. Entre los ejercicios que favorecen la reeducación postural así como su desarrollo y mantenimiento, se ha realizado una selección de los que se consideran no debería faltar en una programación de E.F para la ESO

    Compressive Review about Taxol: History and Future Challenges

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    © 2020. The authors. This document is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by /4.0/ This document is the Published version of a Published Work that appeared in final form in Molecules. To access the final edited and published work see DOI: 10.3390/molecules25245986Taxol®, which is also known as paclitaxel, is a chemotherapeutic agent widely used to treat different cancers. Since the discovery of its antitumoral activity, Taxol® has been used to treat over one million patients, making it one of the most widely employed antitumoral drugs. Taxol® was the first microtubule targeting agent described in the literature, with its main mechanism of action consisting of the disruption of microtubule dynamics, thus inducing mitotic arrest and cell death. However, secondary mechanisms for achieving apoptosis have also been demonstrated. Despite its wide use, Taxol® has certain disadvantages. The main challenges facing Taxol® are the need to find an environmentally sustainable production method based on the use of microorganisms, increase its bioavailability without exerting adverse effects on the health of patients and minimize the resistance presented by a high percentage of cells treated with paclitaxel. This review details, in a succinct manner, the main aspects of this important drug, from its discovery to the present day. We highlight the main challenges that must be faced in the coming years, in order to increase the effectiveness of Taxol® as an anticancer agent

    De Plantis Legionensibus. Nota III

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    As following the former check—list notes on León area, twelve taxa are recorded by the firs time for this area.Como continuación de las anteriores notas florísticas, se complementa el catálogo provincial con una docena de táxones, resultado de diversas recolecciones botánicas efectuadas por distintas zonas del territorio leonés

    The Effect That Project Management Certification Has on Employability: Agent's Perceptions from Spain

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    This study analyses the effects that the project management certification has on employability. This analysis started with a participative process in which various groups of experts who are involved in the certification of people were consulted. A personal interview was carried out amongst 106 professionals —certifying bodies, training institutions, the civil service, and international organisations— and amongst professional who are certified in project management by the International Project Management Association in Spain. The results show that the certification emerges as a powerful tool for improving employability. The effects are demonstrated across two complementary aspects: internal company aspects and external aspects relating to the labour market. Finally, by compiling the different agents’ opinions, a series of measures emerge for improving the accreditation processes as an employability tool and increasing the mutual learning between public and private actors

    Relationship Among Sleep Quality, Sleep Habits and School Adjustment in Adolescents From an Urban District of Galicia

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    [Resumen] Fundamentos: La duración y calidad del sueño están relacionadas en los adolescentes con su estado emocional y rendimiento académico. El objetivo del estudio fue evaluar la calidad del sueño en un grupo de jóvenes y explorar su relación con el ajuste y rendimiento escolar. Métodos: Se realizó un estudio descriptivo-transversal, con 56 adolescentes entre 13 y 17 años de un instituto de educación secundaria de un distrito de La Coruña, durante el curso 2016-2017. Los participantes cumplimentaron el Índice de Calidad del Sueño de Pittsburgh (ICSP), la Escala Breve de Ajuste Escolar y un breve cuestionario sobre hábitos de sueño y calificaciones académicas. Realizamos el análisis descriptivo y diferentes pruebas comparativas o de asociación estadística por métodos paramétricos o no paramétricos según cada variable, considerándose significativos valores de p<0,10. Resultados: El 35,7% de la muestra se clasificó como mala durmiente y la somnolencia fue la variable más alterada del ICSP. Las mujeres dormían significativamente menos que los varones, aunque ambos retrasaban 100 minutos el sueño durante el fin de semana. Ser buen o mal durmiente no afectó al rendimiento académico. El ajuste escolar fue satisfactorio globalmente. Las variables que expresaron desajuste en la interacción con los profesores y compañeros de clase, así como la realización de tareas escolares, se relacionaron con la disfunción diurna. Conclusiones: La somnolencia es el problema más relevante en el grupo de malos durmientes. Esta puede influir negativamente en el ajuste escolar y en la motivación para las actividades escolares de todos los adolescentes, siendo frecuente y subestimada en la mayoría de los casos.[Abstract] Background: The duration and the sleep quality are related to the emotional status and the academic performance in adolescents. The objective of this study was to evaluate the quality of sleep in a group of adolescents, and to explore its relationship with school adjustment and performance. Methods: A cross-sectional descriptive study was made with 56 adolescents aged 13-17 years from a high school institute in an urban district of La Coruña city was performed during the scholar´s year 2016-2017. The participants completed the Pittsburgh Sleep Quality Index (ICSP) and the Brief School Adjustment Scale, and a brief questionnaire about their sleep habits and school scores. Descriptive analysis and different comparative parametric or not parametric statistical tests were applied according to type of variable; statistical significant value was considerate for p<0.10. Results: The 35.7% of sample was poor sleepers and sleepiness was the most altered variable in ICSP. The female participants tended to sleep less than the male participants, and all of them went to sleep 100 minutes later on the weekend. Being a good or bad sleeper did not affect academic performance. Globally the school adjustment was satisfactory. Diurnal dysfunction was related to a worse adolescent-teacher and adolescent-classmate relationship. Diurnal dysfunction was also related to a poor motivation to perform academic tasks. Conclusions: Sleepiness is the most relevant problem in poor sleepers. Sleepiness has a negative influence on school adjustment and motivation for school activities of all adolescents; it is frequent and underestimated in most of the cases

    Excavaciones en el conjunto megalítico de la Peña Oviedo (Camaleño, Cantabria)

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    La excavación del conjunto megalítico de la Peña Oviedo, pretende ser el inicio de un estudio más amplio que aborde de manera global el fenómeno megalítico en las cue.ncas altas de los ríos Deva y Nansa. El total desconocimiento que se tenía hasta esta década, no ya del fenómeno megalítico, sino incluso de su existencia en estos valles montañosos del Occidente de Cantabria hace necesario un estudio que ponga de manifiesto sus características y las relaciones con las áreas vecinas.The excavation of the megalithic complex of the Peña Oviedo, pretends to be the beginning of a larger study that approaches the megalithic phenomenon in the global River basins of the Deva and Nansa rivers. The total lack of knowledge of the megalithic phenomenon, but not even of its existence in these mountain valleys of western Cantabria, requires a study that reveals its characteristics and relations with neighboring areas

    In vitro gastrointestinal digestion of microencapsulated extracts of Flourensia cernua, F. microphylla, and F. retinophylla

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    Recently, some species of the genus Flourensia have been identified by their potential health effects (e.g. anti-inflammatory and apoptotic). Encapsulation of plant extracts is a process that can allow an adequate dosage administration, as well as to protect bioactive compounds and improve their controlled release in the gastrointestinal (GI) system. Therefore, the aims of this work were: to microencapsulate the ethanol extracts of F. cernua, F. microphylla, and F. retinophylla; and to evaluate the controlled release of the microencapsuled extracts in an in vitro GI system. Leaves of Flourensia spp. were collected in wild sites of Coahuila State, and the ethanol extracts were obtained by the Soxhlet method. The encapsulation was performed by the gelation technique, using alginate. The microcapsules formed were characterized in terms of total phenol content (Folin-Ciocalteu method), antioxidant activity by the 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulphonic) diammonium acid (ABTS), and the ferric reducing antioxidant power (FRAP) assays, scanning electron microscopy (SEM), and thermal analysis, and in vitro GI digestion. The microcapsules were found to have spherical-shape and a micro-scale dimension in the range of 2.168.8??m. Also, the built of microcapsules was confirmed by the appearance of an exothermic peak centered at 600?°C in the DSC analysis. F. microphylla noted for its strong antioxidant activity, even in its encapsulated form. In the gastric system the extracts of fresh microcapsules were released from 7.7% to 14.5%, while values of 26.5% to 53.3% were observed for those dried. For the intestinal system, the higher release was observed for dried microcapsules (59.9% to 78.4%) than for those fresh (26.3% to 30.2%). Thus, it was demonstrated that the alginate microcapsule protected the extracts until they were delivered to the target site in the GI model, and this effect was better with the dried microcapsules of Flourensia spp. This study would set the guide for the application of Flourensia spp. extracts in order to take advantage of their benefits to human health.Author G.N. Puente Romero thanks Mexican Science and Technology Council (CONACYT, Mexico) for MSc fellowship support. Authors would like to thank to María Guadalupe Moreno Esquivel, Edith E. Chaires Colunga, Olga L. Solís Hernández, and M. Leticia Rodríguez González of the Phytochemistry Laboratory from Universidad Autónoma Agraria Antonio Narro, for their support in the lab experiments.info:eu-repo/semantics/publishedVersio

    Predictive modeling of therapeutic response to chondroitin sulfate/glucosamine hydrochloride in knee osteoarthritis

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    [Abstract] Background: In the present study, we explored potential protein biomarkers useful to predict the therapeutic response of knee osteoarthritis (KOA) patients treated with pharmaceutical grade Chondroitin sulfate/Glucosamine hydrochloride (CS+GH; Droglican, Bioiberica), in order to optimize therapeutic outcomes. Methods: A shotgun proteomic analysis by iTRAQ labelling and liquid chromatography–mass spectrometry (LC-MS/MS) was performed using sera from 40 patients enrolled in the Multicentre Osteoarthritis interVEntion trial with Sysadoa (MOVES). The panel of proteins potentially useful to predict KOA patient’s response was clinically validated in the whole MOVES cohort at baseline (n = 506) using commercially available enzyme-linked immunosorbent assays kits. Logistic regression models and receiver-operating-characteristics (ROC) curves were used to analyze the contribution of these proteins to our prediction models of symptomatic drug response in KOA. Results: In the discovery phase of the study, a panel of six putative predictive biomarkers of response to CS+GH (APOA2, APOA4, APOH, ITIH1, C4BPa and ORM2) were identified by shotgun proteomics. Data are available via ProteomeXchange with identifier PXD012444. In the verification phase, the panel was verified in a larger set of KOA patients (n = 262). Finally, ITIH1 and ORM2 were qualified by a blind test in the whole MOVES cohort at baseline. The combination of these biomarkers with clinical variables predict the patients’ response to CS+GH with a specificity of 79.5% and a sensitivity of 77.1%. Conclusions: Combining clinical and analytical parameters, we identified one biomarker that could accurately predict KOA patients’ response to CS+GH treatment. Its use would allow an increase in response rates and safety for the patients suffering KOA.Insituto de Salud Carlos III; PI14/01707Instituto de Salud Carlos III; PI16/02124Insituto de Salud Carlos III; PI17/00404Instituto de Salud Carlos III; DTS17/00200Instituto de Salud Carlos III; CIBER-CB06/01/0040Insituto de Salud Carlos III; RETIC-RIER-RD16/0012/000
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