Evaluation of the potential of total proanthocyanidin content in feces as an intake biomarker.

Due to the health benefits associated with proanthocyanidins (PAs), it is useful to identify dietary PA biomarkers that can be determined by simple methods. Since increased levels of circulating PA metabolites are associated with increased fecal PA content, this study explores the spectrophotometric measurement of fecal PA content and its use as a biomarker of PA intake. To this end, fecal PA content was measured using an adaptation of Porter’s spectrophotometric method in samples from a preclinical study and an observational study. In the former, excretion of 250–400 mg PA polymer equivalents/100 g feces was observed during supplementation and the day after, together with a significant association (p < 0.05) between PA intake and the excretion of both intact PAs and some PA metabolites, i.e., (+)-catechin, (−)-epicatechin and syringic acid. No relationship between intake and excretion was found in the observational study, either for the entire group (mean excretion of 240 ± 226 mg PA polymer equivalents/100 g feces) or after stratification into tertiles of consumption. In conclusion, the spectrophotometric determination of total PA content in feces proved to be a valid compliance marker in a preclinical study, but it was not associated with PA intake in free-living subjects. The potential of total PA excretion in observational studies, determined in fecal samples collected the day before dietary recall or in several fecal samples from the same subject, remains to be elucidated, as does a complete validation of the method proposed here.post-print552 K

La Sociología de la Educación en España: una mirada a ras de suelo

El propósito que anima este trabajo es intentar establecer una suerte de estado de la cuestión de la Sociología de la Educación en España por la vía de lo que se ha convenido en llamar «sociología de la sociología». Abordamos primero, mediante un cuestionario, el molde institucional de la enseñanza superior donde nos ubicamos quienes compartimos el doble aspecto de «hacedores» y enseñantes de la disciplina. Se trata de reconocerse en el daguerrotipo definido por el rol, el status académico, la posición en la jerarquía de la estructura de poder... En segundo lugar, el desarrollo de nuestro trabajo discurre en inquirir aquellas cuestiones claves a las que debemos enfrentarnos (o reconocernos): concepciones epistemológicas, consistencia interna del campo, posiciones en relación al objeto, método en términos docentes e investigadores, etc.The intention of this work is trying to establish the state of the question of Sociology of the Education in Spain by the route of what it has been agreed to call «sociology of sociology». In first place we approached, by means of a questionnaire, the framework institutional of superior education where we are located as «makers» and teachers of the discipline. The object is to recognize ourselves in the daguerreotype defined by role, academic status, position in the hierarchy of power structure... Secondly, the development of our work runs in inquiring those key questions which we must face (or recognize ourselves): scientific knowledge conceptions, internal consistency of field, positions in relation to the object, method in educational and investigating terms, etc

FPGA-Based Fused Smart Sensor for Dynamic and Vibration Parameter Extraction in Industrial Robot Links

Intelligent robotics demands the integration of smart sensors that allow the controller to efficiently measure physical quantities. Industrial manipulator robots require a constant monitoring of several parameters such as motion dynamics, inclination, and vibration. This work presents a novel smart sensor to estimate motion dynamics, inclination, and vibration parameters on industrial manipulator robot links based on two primary sensors: an encoder and a triaxial accelerometer. The proposed smart sensor implements a new methodology based on an oversampling technique, averaging decimation filters, FIR filters, finite differences and linear interpolation to estimate the interest parameters, which are computed online utilizing digital hardware signal processing based on field programmable gate arrays (FPGA)

Fused Smart Sensor Network for Multi-Axis Forward Kinematics Estimation in Industrial Robots

Flexible manipulator robots have a wide industrial application. Robot performance requires sensing its position and orientation adequately, known as forward kinematics. Commercially available, motion controllers use high-resolution optical encoders to sense the position of each joint which cannot detect some mechanical deformations that decrease the accuracy of the robot position and orientation. To overcome those problems, several sensor fusion methods have been proposed but at expenses of high-computational load, which avoids the online measurement of the joint’s angular position and the online forward kinematics estimation. The contribution of this work is to propose a fused smart sensor network to estimate the forward kinematics of an industrial robot. The developed smart processor uses Kalman filters to filter and to fuse the information of the sensor network. Two primary sensors are used: an optical encoder, and a 3-axis accelerometer. In order to obtain the position and orientation of each joint online a field-programmable gate array (FPGA) is used in the hardware implementation taking advantage of the parallel computation capabilities and reconfigurability of this device. With the aim of evaluating the smart sensor network performance, three real-operation-oriented paths are executed and monitored in a 6-degree of freedom robot

Revisión bibliográfica del proyecto "en mi casa" de la junta de Castilla y León

Introduction: the increase in life expectancy and the number of people over 65 years of age implies a change in sociodemographic patterns, which is why health services are evolving, the “In my house” project being a great example. The objective of this work is to investigate and investigate the “In my house” project, as well as determine the role of nursing and the scientific basis of said project. Material and methods: of the 147 articles found in metasearch engines such as Tripdatabase or secondary information sources such as Pubmed, 12 were selected, in addition to the use of other scientific search engines to complete the research. Results: Around 90% of the elderly state their desire to reside in their homes during the fullness of their lives and 4 out of 5 older people report that home care has a more structured support network than residential care. 14% of the elderly living alone report family abandonment. In 2031, 33.2% of the elderly will live alone at home. Discussion: due to the loss of family contact, as well as decision-making and changes in the lifestyle of the elderly living in residences, the project “In my house”emerges, which isinspired and followsthefoundations of the Nordic model Housing, which aims to eradicate those negative items mentioned above, favoring the individuality, autonomy and family intimacy of each of these elderly people. Conclusions: both the “In my house” and “At home in my house” project carry out a series of activities and aids to promote independence whether they are institutionalized or live in their own home.Introducción: el aumento de la esperanza de vida y del número de personas mayores de 65 años, suponen un cambio en los patrones sociodemográficos, por ello los servicios sanitarios están evolucionando, siendo un gran ejemplo el proyecto “En mi casa”. El objetivo de este trabajo consiste en indagar e investigar el proyecto “En mi casa”, así como determinar el papel de enfermería y las bases científicas de dicho proyecto. Material y métodos: de los 147 artículos encontrados en metabuscadores como Tripdatabase o fuentes de información secundaria como Pubmed, 12 fueron los seleccionados, además de la utilización de otros buscadores científicos para completar la investigación. Resultados: en torno el 90% de los ancianos manifiesta su deseo de residir en  sus domicilios durante la plenitud desu viday 4 decada 5 mayoresrefieren que la atención domiciliaria posee una red de apoyo más estructurada que la atención residencial. El 14 % de los ancianos que viven solos refieren abandono familiar. En el 2031, el 33,2% de las personas mayores vivirán solas en su domicilio. Discusión: debido a la pérdida de contacto familiar, así como de toma de decisiones y cambios en el estilo de vida de los ancianos que conviven en residencias, surge el proyecto “En mi casa”, que se inspira y sigue las bases del modelo nórdico Housing, el cual pretende erradicar esos ítems negativos mencionados con anterioridad, favoreciendo la individualidad, autonomía e intimidad familiar de cada una de esas personas de avanzada edad. Conclusiones: tanto el proyecto “En mi casa” como “A gusto en mi casa” llevan a cabo una serie de actividades y ayudas para promover la independencia tanto si están institucionalizados o habitan en su propio domicilio

Ciencias de la Biología y Agronomía

Este volumen I contiene 17 capítulos arbitrados que se ocupan de estos asuntos en Tópicos Selectos de Ciencias de la Biología y Agronomía, elegidos de entre las contribuciones, reunimos algunos investigadores y estudiantes. Se presenta un Estudio Comparativo de los Recursos Hidrológico-Forestales de la Microcuenca de la Laguna de Epatlan, Pue. (1993 a 2014); la Situación Actual de la Mancha de Asfalto en Maíz (Zea mays L.) en los Municipios de Jiquipilas y Ocozocoautla, Chiapas, México; las poblaciones sobresalientes de maíz de la raza Zapalote Chico, en la Región Istmeña de Oaxaca; Se indica el índice de área foliar de cultivo de Chile Poblano mediante dos métodos en condiciones protegidas; Esquivel, Urzúa y Ramírez exploran el efecto de la biofertilización con Azospirillum en el crecimiento y producción de Jitomate; esbozan su artículo sobre la determinación del nivel de Heterosis en híbridos de Maíz para la Comarca Lagunera; una investigación sobre la estabilización de semilla de Solanum lycopersicum durante el almacenamiento y estimulación de la germinación; acotan sobre el CTAB como una nueva opción para la detección de Huanglongbing en cítricos, plantean su evaluación sobre el aluminio y cómo afecta la vida de florero de Heliconia psittacorum; indican sobre el impacto del H-564C, como un híbrido de maíz con alta calidad de proteina para el trópico húmedo de México; presetan su investigación sobre la producción de Piña Cayena Lisa y MD2 (Ananas comosus L.) en condiciones de Loma Bonita, en Oaxaca; acotan sobre el efecto de coberteras como control biológico por conservación contra áfidos en Nogal Pecanero; esbozan sobre la caracterización de cuatro genotipos de Frijol Negro en Martínez de la Torre, Veracruz, México; presentan una caracterización hidroecológica de la microcuenca de Arroyo Prieto, Yuriría, Gto., y alternativas para su restauración ambiental; presentan su investigación sobre el efecto del hongo Beauveria bassiana sobre solubilización de fosfatos y la disponibilidad de fósforo en el suelo; plantean su investigación sobre la Germinación y regeneración in vitro de Epidendrum falcatum LINDL; esbozan su artículo sobre genotipos de frijol negro y su tolerancia a sequía terminal en Veracruz, México

Intermediate band formation in a δ-doped like QW superlattices of GaAs/AlxGa1−xAs for solar cell design

It is reported a numerical computation of the local density of states for a δ-doped like QW superlattices of AlxGa1−xAs, as a possible heterostructure that, being integrated into a solar cell device design, can provide an intermediate band of allowed states to assist the absorption of photons with lower energies than that of the energy gap of the solar-cell constituent materials. This work was performed using the nearest neighbors tight-binding model including spin. The confining potential caused by the ionized donor impurities in δ-doped impurities seeding that was obtained analytically within the lines of the Thomas-Fermi approximation was reproduced here by the Al concentration x variation. This potential is considered as an external perturbation in the tight-binding methodology and it is included in the diagonal terms of the tight-binding Hamiltonian. Special attention is paid to the width of the intermediate band caused by the change in the considered aluminium concentration x, the inter-well distance between δ-doped like QW wells and the number of them in the superlattice. In general we can conclude that this kind of superlattices can be suitable for intermediate band formation for possible intermediate-band solar cell design

Rendimiento de trébol blanco asociado con pasto ovilloa diferentes frecuencias de pastoreo

The objective of the study was to evaluate the behavior of white clover associated with ovillograss at four grazing frequencies. The treatments were fixed frequencies of 28 d in spring-summer and 35 d in autumn-winter and when the grasslandintercepted 95 and 100% of intercepted radiation. Treatments were assigned to experimental units according to a randomized block design in divided plots with three replications. The variables evaluated weredry matter yield (DMY), botanical and morphological composition (BMC,%), growth rate (GR), intercepted radiation (IR,%) and height. The frequency of grazing during the winter modified the accumulation of dry matter (3885 kg DM ha-1; p< 0.05). The GRwas higher in the grazing frequency at 28 d in spring (70 kg DM ha-1d-1; p< 0.05). The highest height was reached at 28 d in the summer (26 cm; p< 0.05). Grazing frequency did not affect Grasslandyield, except in winter when the best yield was obtained by grazing at 95% IR. The IRand the height of the plant are indicative of the drymatter yield and optimal harvest timeEl objetivo del estudio fue evaluar el comportamiento del trébol blanco (Trifolium repensL.)asociado con pasto ovillo (Dactylis glomerataL.)a cuatro frecuencias de pastoreo. Los tratamientos fueron las frecuencias fijas de 28 d en primavera-verano y 35 d en otoño-invierno y cuando lapradera intercepto 95 y 100% de radiación interceptada. Los tratamientos se asignaron a unidades experimentales de acuerdo con un diseño de bloques al azar en parcelas divididas con tres repeticiones. Las variables evaluadas fueron: rendimiento de materia seca (RMS), composición botánica y morfológica (CBM, %), tasa de crecimiento (TC), radiación interceptada (RI,%)y altura. La frecuencia de pastoreodurante el invierno modifico la acumulación de materia seca (3885 kg MS ha-1; p<0.05). La TC fue mayor en la frecuencia de pastoreo a 28 d enprimavera (70 kg MS ha-1d-1; p<0.05). La mayor altura se alcanzó a 28 d en el verano (26 cm; p<0.05).La frecuencia de pastoreo no afecto el rendimiento de la pradera, excepto en invierno cuando el mejor rendimiento se obtuvo al pastorear al 95% de RI.La RI y la altura de la planta son indicativos del rendimiento de materia seca y momento óptimo de cosecha

Proanthocyanidins, a class of dietary polyphenols: assessment in feces as potential intake biomarker

Trabajo presentado a la 3rd Edition of Young Bachelor and Master Biosciences European Students Biocongres