629 research outputs found

    WASTE WATER FROM A CARAMEL INDUSTRY AS A PARTIAL SUBSTITUTE IN DIETS FOR PIGS

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    WASTE WATER FROM A CARAMEL INDUSTRY AS A PARTIAL SUBSTITUTE IN DIETS FOR PIG

    Herbage Mass and \u3cem\u3ein Situ\u3c/em\u3e Dry Matter Ruminal Degradation Kinetics of \u3cem\u3eBrachiaria\u3c/em\u3e spp

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    In Puerto Rico, Brachiaria decumbens cv. Basilisk has been promoted as a potential forage for acid soils and humid areas, but with limited success. Recently, B. brizantha cv. Marandú and a hybrid (B. brizantha x B. Ruziziensis) cv. Mulato were introduced for evaluation on acid soils and as a potential replacement for cv. Basilisk, but little information is available on yield performance under grazing or nutritive value. The objective of this study was to assess herbage mass and nutritive value of grazed pastures consisting of Basilisk, Marandú, and Mulato and determine the rate of in situ dry matter degradation

    Distribución por tamaños de la materia particulada en Las Palmas de Gran Canaria

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    En este trabajo se presenta la distribución por tamaños de la materia particulada (MP)en la ciudad de Las Palmas de Gran Canaria. La experiencia se llevó a cabo entre junio de 2002 y marzo de 2003. A tal efecto se han utilizado captadores de alto volumen equipados con impactadores en cascada, que permiten una separación, en filtros de fibra de vidrio, de la materia recogida en seis fracciones de tamaño. Al final del muestreo se dispuso de 42 muestras válidas para el análisis. La materia particulada se determinó gravimétricamente. Se establecióla distribución de la concentración másica en función de los diámetros de corte. Se utilizan los diagramas de Lundgreen para establecer la distribución por tamaños y la evolución estacional e histórica. Se estudian las fracciones fina y gruesa del aerosol así como su evolución temporal e histórica

    Effects of sleep on the academic performance of children with attention deficit and hyperactivity disorder

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    Attention deficit and hyperactivity disorder (ADHD) is commonly associated with disordered or disturbed sleep and the association of sleep problems with ADHD is complex and multidirectional. The purpose of this study was to analyze the relationship between sleep and academic performance, comparing children with ADHD and a control group without ADHD. Academic performance in Spanish, mathematics, and a foreign language (English) was evaluated. Different presentations of ADHD were considered as well as the potential difference between weekday and weekend sleep habits. The sample consisted of 75 children aged 6–12 in primary education. Accelerometry was used to study sleep, and school grades were used to gather information about academic performance. The results showed that ADHD influenced the amount of sleep during weekends, the time getting up at the weekends, weekday sleep efficiency, as well as academic performance. Given the effects that were seen in the variables linked to the weekend, it is necessary to consider a longitudinal design with which to determine if there is a cause and effect relationship

    Conjunctival Melanoma: A New Clinical and Therapeutical Approach

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    Melanoma involving the conjunctiva is extremely rare. Graver prognosis has been reported with primary conjunctival melanoma than with their cutaneous counterparts [Collin et al.: Aust N Z J Ophthalmol 1986;14:29–34]. Among conjunctival melanomas, two significant risk factors for tumour-related death have been identified: (i) age older than 55 years and (ii) unfavourable tumour location (caruncle, cornea, fornix, palpebral conjunctiva) [Werschnik and Lommatzsch: Am J Clin Oncol 2002;25:248–255]. Here we present a rare case of lentigo maligna involving the palpebral, bulbar conjunctiva and the caruncle. We describe dermoscopic patterns observed and the use of a novel ocular melanoma therapy with topical imiquimod

    The distance between teachers’ and students’ work in EHEE: A dangerous gap?

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    El objetivo de este artículo es analizar las relaciones entre las actividades docentes y discentes que se desarrollaron en un Proyecto de Experimentación del Crédito Europeo. Se presenta la frecuencia de ocurrencia de las actividades de enseñanza-aprendizaje de profesorado y alumnado, pero el eje central reside en el análisis, utilizando correlaciones, de las relaciones entre ambas. Los resultados indican que existen ciertas incoherencias entre la práctica docente analizada y las propuestas pedagógicas del EEES: la actividad más utilizada es la Exposición oral del profesor; los procedimientos de evaluación más utilizados no parecen promover el aprendizaje autónomo del alumnado, y los materiales que tiende a utilizar el alumnado son ofrecidos por el profesorado más que buscados por aquél. Por otra parte, se observa una relación estrecha entre: actividades docentes y procedimientos de evaluación de carácter individual, y entre aquellas de naturaleza grupal; actividades docentes de naturaleza abierta y materiales ofrecidos por el profesor; y procedimientos de evaluación de tipo individual y actividades discentes (actividades de estudio y uso de materiales) de carácter individual. Las orientaciones y propuestas del EEES insisten en destinar una parte considerable de los esfuerzos docentes y discentes al trabajo en grupo como actividad de aprendizaje y en los trabajos grupales como procedimiento de evaluación, pero los resultados muestran indicios de que es necesario profundizar en el estudio de esta actividad.The aim of this article is to analyzing the relationships between teachers’ and students’ teaching and learning activities. Data were drawn from the evaluation of an ECTS Experimental Project in the degree of Education (year three) in the Faculty of Education of La Laguna University. We begin presenting the frequencies of teachers’ and students’ teaching and learning activities, but the central focus is the analysis, by means of correlations, of the relationships between them. The results shows inconsistencies between the educational practice analyzed and the EHEA pedagogical proposals: the activity more frequently employed by lecturers was oral exposition; moreover, the evaluation procedures more used seems not to promote student autonomous learning, and students tend to use teacher offered learning materials more than autonomously searched ones. It seems to be a close relationship between the following activities: teaching activities and evaluation procedures according to its individual or group nature (individual activities are related to individual evaluation procedures and group activities to group evaluation procedures); more open ended teaching and learning activities and leaning materials offered by the teacher; and individual evaluation procedures and individual student activities and learning materials. The pedagogical proposals of the EHEA emphasize the relevance of group work as a teaching and learning strategy, as well as an important evaluation procedure. Our results point to the need to go more deeply into this issue.Universidad de Granada. Departamento de Didáctica y Organización Escolar. Grupo FORCE (HUM-386

    Personal Guides: Heterogeneous Robots Sharing Personal Tours in Multi-Floor Environments

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    GidaBot is an application designed to setup and run a heterogeneous team of robots to act as tour guides in multi-floor buildings. Although the tours can go through several floors, the robots can only service a single floor, and thus, a guiding task may require collaboration among several robots. The designed system makes use of a robust inter-robot communication strategy to share goals and paths during the guiding tasks. Such tours work as personal services carried out by one or more robots. In this paper, a face re-identification/verification module based on state-of-the-art techniques is developed, evaluated offline, and integrated into GidaBot’s real daily activities, to avoid new visitors interfering with those attended. It is a complex problem because, as users are casual visitors, no long-term information is stored, and consequently, faces are unknown in the training step. Initially, re-identification and verification are evaluated offline considering different face detectors and computing distances in a face embedding representation. To fulfil the goal online, several face detectors are fused in parallel to avoid face alignment bias produced by face detectors under certain circumstances, and the decision is made based on a minimum distance criterion. This fused approach outperforms any individual method and highly improves the real system’s reliability, as the tests carried out using real robots at the Faculty of Informatics in San Sebastian show.This work has been partially funded by the Basque Government, Spain, grant number IT900-16, and the Spanish Ministry of Economy and Competitiveness (MINECO), grant number RTI2018-093337-B-I00

    Anti-malarial activity and HS-SPME-GC-MS chemical profiling of Plinia cerrocampanensis leaf essential oil

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    Plinia cerrocampanensis is an endemic plant of Panama. The leaf essential oil of this plant has shown antibacterial activity. However, anti-malarial activity and chemical profiling by HS-SPME-GC-MS of this essential oil have not been reported before. Anti-malarial activity of the essential oil (EO) was evaluated in vitro against chloroquine-sensitive HB3 and chloroquine-resistant W2 strains of Plasmodium falciparum. Synergistic effect of chloroquine and the EO on parasite growth was evaluated by calculating the combination index. A methodology involving headspace solid phase microextraction and gas chromatography-mPlinia cerrocampanensis is an endemic plant of Panama. The leaf essential oil of this plant has shown antibacterial activity. However, anti-malarial activity and chemical profiling by HS-SPME-GC-MS of this essential oil have not been reported before. Anti-malarial activity of the essential oil (EO) was evaluated in vitro against chloroquine-sensitive HB3 and chloroquine-resistant W2 strains of Plasmodium falciparum. Synergistic effect of chloroquine and the EO on parasite growth was evaluated by calculating the combination index. A methodology involving headspace solid phase microextraction and gas chromatography-

    Anti-malarial activity and HS-SPME-GC-MS chemical profiling of Plinia cerrocampanensis leaf essential oil

    Get PDF
    Plinia cerrocampanensis is an endemic plant of Panama. The leaf essential oil of this plant has shown antibacterial activity. However, anti-malarial activity and chemical profiling by HS-SPME-GC-MS of this essential oil have not been reported before. Anti-malarial activity of the essential oil (EO) was evaluated in vitro against chloroquine-sensitive HB3 and chloroquine-resistant W2 strains of Plasmodium falciparum. Synergistic effect of chloroquine and the EO on parasite growth was evaluated by calculating the combination index. A methodology involving headspace solid phase microextraction and gas chromatography-mPlinia cerrocampanensis is an endemic plant of Panama. The leaf essential oil of this plant has shown antibacterial activity. However, anti-malarial activity and chemical profiling by HS-SPME-GC-MS of this essential oil have not been reported before. Anti-malarial activity of the essential oil (EO) was evaluated in vitro against chloroquine-sensitive HB3 and chloroquine-resistant W2 strains of Plasmodium falciparum. Synergistic effect of chloroquine and the EO on parasite growth was evaluated by calculating the combination index. A methodology involving headspace solid phase microextraction and gas chromatography-
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