Implementación y desarrollo de una arquitectura inalámbrica para su uso en agricultura de precisión

En el presente artículo, se describe una arquitectura inalámbrica que permita la optimización del agua en cultivos agrícolas. La arquitectura propuesta está basada en diferentes nodos inalámbricos dotados de conectividad GPRS. Cada uno de los nodos inalámbricos es totalmente autónomo y hace uso de la energía solar y baterías recargables, lo que les confiere autonomía prácticamente ilimitada. A los nodos se conectan diferentes sensores comerciales para medir los diversos parámetros del cultivo. Los datos son enviados y procesados en un servidor, el cual, haciendo uso de sistemas de Bases de Datos almacena la información obtenida de los sensores, permitiendo una posterior consulta y análisis de los mismos de forma sencilla y versátil

Sistema para monitorizar entornos marinos basado en redes sensores inalámbricas

En el presente trabajo se propone un prototipo de boya oceanográfica como elemento constitutivo básico de una red de sensores inalámbrica para la monitorización del medio marino. Se describe el nodo sensor o mote que permite leer los datos de varios sensores oceanográficos y transmitirlos inalámbricamente hasta un servidor de datos accesible a través de Internet. Además, es necesario embarcar la electrónica en una boya que se adapte a las condiciones del medio marino. El diseño de dicha estructura mecánica no es una tarea trivial. Este trabajo describe también el diseño mecánico de la boya propuesta. La aplicación de usuario desarrollada permite la visualización de los datos de una forma intuitiva mediante la representación gráfica de los mismos y utilizando Google Maps. Por último, se describen las diferentes pruebas realizadas en el laboratorio y en el mar en condiciones reales de funcionamiento.Centro Universitario de la Defensa. Escuela de Turismo de Cartagena. Escuela Técnica Superior de Ingeniería Industrial UPCT. Escuela Técnica Superior de Ingeniería de Telecomunicación (ETSIT). Escuela de Ingeniería de Caminos y Minas (EICM). Escuela de Arquitectura e Ingeniería de Edificación (ARQ&IDE). Parque Tecnológico de Fuente Álamo. Navantia. Campus Mare Nostru

Effect of p-Synephrine on Fat Oxidation Rate during Exercise of Increasing Intensity in Healthy Active Women.

p-Synephrine is the principal alkaloid of bitter orange (Citrus aurantium). Several recent investigations have found that the intake of 2–3 mg/kg of p-synephrine raises fat oxidation rate during exercise of low-to-moderate intensity. However, these investigations have been carried out only with samples of male participants or mixed men/women samples. Therefore, the aim of this investigation was to study the effect of p-synephrine intake on fat oxidation during exercise of increasing intensity in healthy women. Using a double-blind, randomized experiment, 18 healthy recreationally active women performed two identical exercise trials after the ingestion of (a) 3 mg/kg of psynephrine and (b) 3 mg/kg of a placebo (cellulose). The exercise trials consisted of a ramp test (from 30 to 80% of maximal oxygen uptake; VO2max) on a cycle ergometer while substrate oxidation rates were measured at each workload by indirect calorimetry. In comparison to the placebo, the intake of p-synephrine increased resting tympanic temperature (36.1 ± 0.5 vs. 36.4 ± 0.4 °C p = 0.033, d = 0.87) with no effect on resting heart rate (p = 0.111) and systolic (p = 0.994) and diastolic blood pressure (p = 0.751). During exercise, there was no significant effect of p-synephrine on fat oxidation rate (F = 0.517; p = 0.484), carbohydrate oxidation rate (F = 0.730; p = 0.795), energy expenditure rate (F = 0.480; p = 0.833), heart rate (F = 4.269; p = 0.068) and participant’s perceived exertion (F = 0.337; p = 0.580). The maximal rate of fat oxidation with placebo was 0.26 ± 0.10 g/min and it was similar with p-synephrine (0.28 ± 0.08 g/min, p = 0.449, d = 0.21). An acute intake of 3 mg/kg of p-synephrine before exercise did not modify energy expenditure and substrate oxidation during submaximal aerobic exercise in healthy active women. It is likely that the increase in resting tympanic temperature induced by p-synephrine hindered the effect of this substance on fat utilization during exercise in healthy active women.pre-print519 K

Treatment with tocilizumab or corticosteroids for COVID-19 patients with hyperinflammatory state: a multicentre cohort study (SAM-COVID-19)

Objectives: The objective of this study was to estimate the association between tocilizumab or corticosteroids and the risk of intubation or death in patients with coronavirus disease 19 (COVID-19) with a hyperinflammatory state according to clinical and laboratory parameters. Methods: A cohort study was performed in 60 Spanish hospitals including 778 patients with COVID-19 and clinical and laboratory data indicative of a hyperinflammatory state. Treatment was mainly with tocilizumab, an intermediate-high dose of corticosteroids (IHDC), a pulse dose of corticosteroids (PDC), combination therapy, or no treatment. Primary outcome was intubation or death; follow-up was 21 days. Propensity score-adjusted estimations using Cox regression (logistic regression if needed) were calculated. Propensity scores were used as confounders, matching variables and for the inverse probability of treatment weights (IPTWs). Results: In all, 88, 117, 78 and 151 patients treated with tocilizumab, IHDC, PDC, and combination therapy, respectively, were compared with 344 untreated patients. The primary endpoint occurred in 10 (11.4%), 27 (23.1%), 12 (15.4%), 40 (25.6%) and 69 (21.1%), respectively. The IPTW-based hazard ratios (odds ratio for combination therapy) for the primary endpoint were 0.32 (95%CI 0.22-0.47; p < 0.001) for tocilizumab, 0.82 (0.71-1.30; p 0.82) for IHDC, 0.61 (0.43-0.86; p 0.006) for PDC, and 1.17 (0.86-1.58; p 0.30) for combination therapy. Other applications of the propensity score provided similar results, but were not significant for PDC. Tocilizumab was also associated with lower hazard of death alone in IPTW analysis (0.07; 0.02-0.17; p < 0.001). Conclusions: Tocilizumab might be useful in COVID-19 patients with a hyperinflammatory state and should be prioritized for randomized trials in this situatio

La renovación de la palabra en el bicentenario de la Argentina : los colores de la mirada lingüística

El libro reúne trabajos en los que se exponen resultados de investigaciones presentadas por investigadores de Argentina, Chile, Brasil, España, Italia y Alemania en el XII Congreso de la Sociedad Argentina de Lingüística (SAL), Bicentenario: la renovación de la palabra, realizado en Mendoza, Argentina, entre el 6 y el 9 de abril de 2010. Las temáticas abordadas en los 167 capítulos muestran las grandes líneas de investigación que se desarrollan fundamentalmente en nuestro país, pero también en los otros países mencionados arriba, y señalan además las áreas que recién se inician, con poca tradición en nuestro país y que deberían fomentarse. Los trabajos aquí publicados se enmarcan dentro de las siguientes disciplinas y/o campos de investigación: Fonología, Sintaxis, Semántica y Pragmática, Lingüística Cognitiva, Análisis del Discurso, Psicolingüística, Adquisición de la Lengua, Sociolingüística y Dialectología, Didáctica de la lengua, Lingüística Aplicada, Lingüística Computacional, Historia de la Lengua y la Lingüística, Lenguas Aborígenes, Filosofía del Lenguaje, Lexicología y Terminología

A wireless sensors architecture for efficient irrigation watermanagement

Water is an essential resource for the development of agriculture. In several locations like the south-east of Spain water is scarce and its cost is high, so optimal management of this important resource isessential. Therefore, the application of irrigation strategies to improve the watering process, affects theprofitability of crops quite significantly. It is necessary to carry out the instrumentation of the variablesthat affect the growing process of the crop (soil, water and plant) and use the techniques associatedwith this instrumentation to take actions to optimize the production. The system proposed in this paperuses information and communication technologies, allowing the user to consult and analyze the infor-mation obtained by different sensors from any device (computer, mobile phone or tablet) in an easy andcomfortable way. The proposed architecture is based on different wireless nodes equipped with GPRSconnectivity. Each wireless node is completely autonomous and makes use of solar energy, giving it vir-tually unlimited autonomy. Different commercial sensors for measuring the wide range of parametersof the soil, plant and atmosphere can be connected to the nodes. The data is sent and processed on aremote server, which stores the information of the sensors in a database, allowing further consultationand analysis of data in a simple and versatile way.The development of this work was supported by the Span-ish Ministry of Science and Innovation (Ministerio de Ciencia e Innovación) (MICINN) through the projects MICINN, AGL2010-19201-C04-04 and MINECO, AGL2013-49047-C2-1-R. We wouldlike to thank Widhoc Smart Solutions S.L. for letting us use theirfacilities to carry out the tests

Effect of ACTN3 genotype on sports performance, exercise-induced muscle damage, and injury epidemiology

Genetic factors play a significant role in athletic performance and its related phenotypes such as power, strength and aerobic capacity. In this regard, the lack of a muscle protein due to a genetic polymorphism has been found to affect sport performance in a wide variety of ways. α-actinin-3 is a protein located within the skeletal muscle with a key role in the production of sarcomeric force. A common stop-codon polymorphism (rs1815739; R577X) in the gene that codes for α-actinin-3 (ACTN3) produces individuals with the XX genotype that lack expression of a functional α-actinin-3. In contrast, individuals with the R-allele (i.e., RX vs. RR genotypes) in this polymorphism can express α-actinin-3. Interestingly, around ~18% of the world population have the XX genotype and much has been debated about why a polymorphism that produces a lack of a muscle protein has endured natural selection. Several investigations have found that α-actinin-3 deficiency due to XX homozygosity in the ACTN3 R577X polymorphism can negatively affect sports performance through several structural, metabolic, or signaling changes. In addition, new evidence suggests that α-actinin-3 deficiency may also impact sports performance through indirect factors such a higher risk for injury or lower resistance to muscle-damaging exercise. The purpose of this discussion is to provide a clear explanation of the effect of α-actinin-3 deficiency due to the ACTN3 XX genotype on sport. Key focus has been provided about the effect of α-actinin-3 deficiency on morphologic changes in skeletal muscle, on the low frequency of XX athletes in some athletic disciplines, and on injury epidemiology

Does the Time of Day Play a Role in the Acute Effect of p-Synephrine on Fat Oxidation Rate during Exercise in Women? A Randomized, Crossover and Double-Blind Study

p-Synephrine is deemed a safe and effective substance to increase fat utilization during exercise of low-to-moderate intensity in men but not in women. Additionally, the existence of a diurnal variation in substrate utilization has been documented during exercise with enhanced fat oxidation in the evening compared with early morning. However, it remains unknown whether there is an interaction between the effect of p-synephrine and the time of the day on fat oxidation during exercise. This study aimed to evaluate the effect of the acute ingestion of 3 milligram of p-synephrine per kilogram of body mass (mg/kg) on fat oxidation during exercise of increasing intensity when the exercise is performed in the morning vs. the evening. Using a randomized, double-blind, placebo-controlled experimental design, 16 healthy and active women performed four identical exercise trials after the ingestion of 3 mg/kg of p-synephrine and 3 mg/kg of a placebo (cellulose) both in the morning (8&ndash;10 am) and in the evening (5&ndash;7 pm). In the exercise trials, the substances were ingested 60 min before an incremental test on a cycle ergometer with 3 min stages at workloads from 30 to 80% of maximal oxygen uptake (VO2max). Substrate oxidation rates were measured by indirect calorimetry. In each trial, the maximum rate of fat oxidation (MFO) and the intensity that elicited MFO (Fatmax) were measured. A two-way analysis of variance (time-of-the day &times; substance) was used to detect differences among the trials. With the placebo, MFO was 0.25 &plusmn; 0.11 g/min in the morning and 0.24 &plusmn; 0.07 g/min in the evening. With p-synephrine, MFO was 0.26 &plusmn; 0.09 g/min in the morning and 0.21 &plusmn; 0.07 g/min in the evening. There was no main effect of substance (p = 0.349), time of day (p = 0.186) and the substance &times; time of day (p = 0.365) on MFO. Additionally, Fatmax was reached at a similar exercise intensity with the placebo (41.33 &plusmn; 8.34% VO2max in the morning and 44.38 &plusmn; 7.37% VO2max in the evening) and with p-synephrine (43.33 &plusmn; 7.24% VO2max in the morning and 45.00 &plusmn; 7.43% VO2max in the evening), irrespective of the time of day with no main effect of substance (p = 0.633), time of day (p = 0.191), or interaction (p = 0.580). In summary, the acute intake of 3 mg/kg of p-synephrine before exercise did not increase MFO and Fatmax, independently of the time of day, in female athletes. This indicates that the time of day is not a factor explaining the lack of effectiveness of this substance to enhance fat oxidation during aerobic exercise in women

La tutoría en la Educación Secundaria : materiales para el tutor

Manual de ayuda al tutor que planifica y coordina la atención a la diversidad del alumnado y arbitra una serie de medidas que dan respuesta a la realidad que se vive en los centros educativos. Se exponen ideas, reflexiones y actividades resultado de las sesiones de tutoría procurando promover una interacción continuada entre la reflexión y la acción.Los temas abordados son, entre otros: autoconocimiento y autoestima, elección de delegados, sentimientos, familias, evaluación y absentismo..MurciaConsejería de Educación y Cultura. Secretaría General; Av. de la Fama, 15; 30006 Murcia; +34968279685; +34968279835; [email protected]