Efeitos do solo e clima numa vinha de uva de mesa com cultura de cobertura. Gestão da rega utilizando redes de sensores

[ENG] TThe use of mulches in vineyards and orchards is a traditional agricultural practice used with the aim of saving moisture, reducing weed growth and improving organic matter content in the soil. In table grape vineyards trained to overhead system in Puglia region (Southeastern Italy), plastic sheets covering the canopy are often used to either advance ripening or delay harvest. In this environment, the living mulches could contribute to the modification of the microclimate around the canopy below the plastic sheets. This condition has an influence on the climatic demand and on both the vegetative and productive activities, mainly in stages with a high evapotranspiration. However, the presence of living mulches could increase the demand of available water and nutrient resources and this could cause a lower yield. The aim of this study was to acquire a suitable knowledge to manage irrigation and verify the influences of living mulches on the vine by using wireless sensor networks to measure the vapor pressure deficit, soil water potential and content.[POR] A utilização de coberturas do solo em vinhas e pomares é uma prática agrícola tradicional, utilizada com o objetivo de preservar a humidade do solo, reduzir o crescimento de infestantes e melhorar o teor de matéria orgânica no solo. Em vinhas de uva de mesa, conduzidas em sistema de pérgula na região de Puglia (sudeste da Itália), são frequentemente usadas coberturas de plástico para promover o avanço da maturação ou o atraso da colheita. Neste ambiente a utilização de enrelvamentos pode contribuir para a modificação do microclima do copado. Esta condição pode influenciar a demanda atmosférica, bem como a atividade vegetativa e reprodutiva da videira, principalmente em períodos de elevada evapotranspiração. No entanto, a presença do enrelvamento pode originar um aumento da demanda dos recursos disponíveis, nomeadamente água e nutrientes, o que poderá provocar uma quebra de produção. O objetivo deste estudo foi adquirir conhecimento para a gestão da rega e, simultaneamente, verificar a influência dos enrelvamentos na atividade da videira, usando para o efeito redes de sensores “sem fio” para medir o déficit de pressão de vapor, o potencial e o conteúdo de água no solo.The development of this work was supported by: The Spanish Ministry of Science and Innovation through the project RIDEFRUT (ref. AGL2013-49047-C2-1-R), the “Fundacion Seneca, Agencia de Ciencia y Tecnologia” of the Region of Murcia under the “Excelence Group Program”, and the Technical University of Cartagena under the PMPDI Program

Vivências e envolvimento acadêmico de estudantes universitários : adaptação e validação de escalas para a sua avaliação

Este artículo describe los procesos preliminares de adaptación y validación de dos instrumentos diseñados para describir Vivencias Académicas (centradas en la satisfacción) y la Implicación Académica (centrada en el compromiso) en estudiantes universitarios. De acuerdo con la literatura científica en el área, las vivencias y la implicación académica se encuentran asociadas con las dificultades relacionadas al abandono de los alumnos. Para este estudio se aplicaron dos cuestionarios a 261 estudiantes pertenecientes a la Universidad de Concepción, Campus Los Ángeles, Chile. Ambos instrumentos mostraron niveles adecuados de homogeneidad o consistencia interna en los ítems repartidos para las subescalas de cada cuestionario. Paralelamente, se calcularon las correlaciones entre las dimensiones de ambos cuestionarios, siendo los coeficientes obtenidos adecuados para los constructos evaluados. Estos antecedentes permiten el comienzo de la validación de los cuestionarios en estudio.This paper presents preliminary findings regarding the adaptation and validation of two instruments designed to measure Academic Experiences (centred on satisfaction) and Academic Involvement in university students. Previous research has shown that academic experience and involvement are strongly correlated with student drop-out rates. For the present study, the two surveys were administered to 261 students at the University of Concepción, Chile, on the Los Ángeles campus. Both instruments showed suitable levels of reliability and internal consistency on the subscales. Furthermore, the correlation coefficients obtained when comparing dimensions on each survey were acceptable for the constructs being evaluated. These findings allow for a preliminary validation of the two questionnaires included in the study.Descrevem-se os processos preliminares de adaptação e validação de dois instrumentos voltados para a avaliação das Vivências Acadêmicas (centradas na satisfação) e da Implicação Acadêmica (centrada no compromisso) de estudantes universitários. Conforme a literatura científica na área, vivências e implicação acadêmica encontram-se associadas às dificuldades relacionadas ao abandono dos alunos. Este estudo envolveu a aplicação dos dois questionários a 261 estudantes da Universidade de Concepción, campos Los Angeles, Chile. Ambos os instrumentos mostram níveis adequados de homogeneidade ou consistência interna dos itens divididos em subescalas, em cada questionário. Paralelamente, calculam-se as correlações entre as dimensões dos questionários, sendo os coeficientes obtidos adequados aos constructos avaliados. Estes antecedentes permitem o início da validação dos questionários em estudo.Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Sistema de Información CientíficaUniversidad Austral de Chile Valdivia, Chil

Empleo de problemas históricos en un curso introductorio de cálculo de probabilidades

Recoge los contenidos presentados a: Foro sobre la Evaluación de la Calidad de la Educación Superior y de la Investigación (8. 2011. Santander)

Designing and developing of computer-based techniques for helping agronomical research and precision farming

[SPA] Este documento muestra una explicación detallada acerca de una nueva técnica, basada en machine learning, que permite a un ordenador detectar de forma automática la fase fenológica de un árbol de un cultivo de cítricos usando una cámara estándar. Esta técnica ayudará en la aplicación automática de técnicas de riego deficitario. [ENG] This document shows a detailed explanation about a new machine learning-based technique which allows a computer to detect automatically the phenological stage of a citrus crop tree from a picture taken using a standard camera. This will help autonomous systems to determine when deficit irrigation could be applied.Este trabajo ha sido financiado por el Ministerio de Investigación e Innovación del Gobierno de España (PCIN-2017-091, WaterWorks2015 ERA-NET) y Manuel Forcen agradece la financiación del contrato predoctoral recibido de la Fundación Séneca (20767/FPI/18)

Thalidomide for the Treatment of Metastatic Hepatic Epithelioid Hemangioendothelioma: A Case Report with a Long Term Follow-up

Hepatic epithelioid hemangioendothelioma (HEH) is an unusual, low-grade malignant vascular tumor of the liver. Here we describe a case of a 40-year-old woman who presented with abdominal pain in the upper right quadrant and giant hepatomegaly, in which imaging studies and a fine-needle liver biopsy confirmed the presence of a large EHE with an isolated lung metastasis. After balancing all possible therapeutic modalities the patient was treated conservatively with thalidomide (300 mg/day). The drug was well tolerated with minimal toxicity and thepatient continues on therapy 109 months after treatment was started with no disease progression. Current therapeutic options for HEH are discussed in light of the clinical case with particular emphasis on anti-angiogenic therapies

Adaptación metodológica: de Licenciatura a Grado

Consideramos un logro importante las nuevas filosofías docentes, en el proceso de ajustes a las enseñanzas superiores en el ámbito de la Comunidad Europea. Sin embargo el reto está en mejorar a partir de los nuevos planes de estudios. Nos atrevemos a afirmar, que en toda esta reforma se pretende abordar una responsabilidad de proyecto de aprendizaje, estudiando el diseño de formación universitaria dirigido a una enseñanza de calidad. La necesidad de responder a las exigencias de una futura realidad laboral hace indispensable dirigirse hacia unos contenidos interdisciplinares entre las distintas asignaturas. El compromiso de los docentes para adaptar las asignaturas de licenciatura a los nuevos planes de estudio, radica en orientarlas a la adquisición de competencias profesionales que promuevan el desarrollo de las habilidades extracurriculares

Impact of dapagliflozin on cardiac remodelling in patients with chronic heart failure: The DAPA-MODA study.

AIMS Dapagliflozin improves the prognosis of patients with heart failure (HF), regardless of left ventricular ejection fraction (LVEF). However, its effect on cardiac remodelling parameters, specifically left atrial (LA) remodelling, is not well established. METHODS AND RESULTS The DAPA-MODA trial (NCT04707352) is a multicentre, single-arm, open-label, prospective and interventional study that aimed to evaluate the effect of dapagliflozin on cardiac remodelling parameters over 6 months. Patients with stable chronic HF receiving optimized guideline-directed therapy, except for any sodium-glucose cotransporter 2 inhibitor, were included. Echocardiography was performed at baseline, 30 and 180 days, and analysed by a central core-lab in a blinded manner to both patient and time. The primary endpoint was the change in maximal LA volume index (LAVI). A total of 162 patients (64.2% men, 70.5 ± 10.6 years, 52% LVEF >40%) were included in the study. At baseline, LA dilatation was observed (LAVI 48.1 ± 22.6 ml/m2 ) and LA parameters were similar between LVEF-based phenotypes (≤40% vs. >40%). LAVI showed a significant reduction at 180 days (-6.6% [95% confidence interval -11.1, -1.8], p = 0.008), primarily due to a decrease in reservoir volume (-13.8% [95% confidence interval -22.5, -4], p = 0.007). Left ventricular geometry improved with significant reductions in left ventricular mass index (-13.9% [95% confidence interval -18.7, -8.7], p < 0.001), end-diastolic volume (-8.0% [95% confidence interval -11.6, -4.2], p < 0.001) and end-systolic volume (-11.9% [95% confidence interval -16.7, -6.8], p < 0.001) at 180 days. N-terminal pro-B-type natriuretic peptide (NT-proBNP) showed a significant reduction at 180 days (-18.2% [95% confidence interval -27.1, -8.2], p < 0.001), without changes in filling Doppler measures. CONCLUSION Dapagliflozin administration in stable out-setting patients with chronic HF and optimized therapy results in global reverse remodelling of cardiac structure, including reductions in LA volumes and improvement in left ventricular geometry and NT-proBNP concentrations.This study has been sponsored by Sociedad Española de Cardiología and has received funding by a non-conditional investigational grant from AstraZeneca Farmacéutica Spain.S

The research about the El Pirulejo: an interdisciplinary approach

El estudio interdisciplinar que constituye esta obra pone de manifiesto que El Pirulejo es el mejor yacimiento conocido para el conocimiento del Tardiglaciar en las comarcas interiores del sur de la Península Ibérica. El enclave conserva una secuencia muy rica en cantidad, calidad y diversidad de materiales arqueológicos que han permitido un análisis desde múltiples ópticas (cultura material, manifestaciones simbólicas, paleoeconomía, secuencia paleoambiental, etc.).This work is an interdisciplinary study about El Pirulejo, one of the most important site by the knowledge of the Lateglacial in the south of the Iberian peninsula. The archaoelogical site conservated a very richness sequence with a lot and variability archaeological rests that we permit a multiphocal analysis (material culture, simbolic evidences, palaeoeconomy, paleoenvironmental sequence, etc.)