Manganese and zinc in acidic agricultural soils from Central Spain: Distribution and phytoavailability prediction with chemical extraction tests

The extractability and distribution of manganese (Mn) and zinc (Zn) were evaluated in acidic agricultural soils from Central Spain. Both single (0.1 M hydrochloride [HCl] and 0.05 M ethylenediaminetetraacetate [EDTA]) and sequential extraction procedures (SEP) (modified Tessier procedure and Community Bureau of Reference [BCR] protocol) were applied to 29 representative soils that belong to the Alfisol, Inceptisol, and Entisol orders. Average relative Mn extractabilities with respect to the total content (16.6% for HCl and 31.9% for EDTA) were higher than those of Zn (7.7% for HCl and 6.5% for EDTA). Manganese was mainly released in the oxide-bound phase of both SEP (33.1% for modified Tessier and 48.9% for BCR), whereas Zn was predominantly found in the residual fraction (49.1% for modified Tessier and 31.4% for BCR). Significant correlations were only found between the amounts of extractable Zn and the oxide-bound fraction in both SEP. Few relationships were established between Zn fractions extracted by the BCR procedure and those obtained with the Tessier method. Both metal concentrations in spring barley (Hordeum vulgare L., cv Beka) grown in 11 selected soils and the calculated soil/plant transfer coefficients (soil/plant concentration factor (CF), mean values of 31.2 for Mn and 196 for Zn) were poorly (or not at all) correlated with the different extracted soil fractions (single and sequential). A number of empirical equations have been obtained by regression analyses to predict the Mn and Zn uptake by barley, with soil metal forms and some soil characteristics as components (pH for Mn and organic matter for Zn). Values of R2 in the equations were relatively low (<68%). Single-extraction techniques produced worse results than SEP for the evaluation of Mn phytoavailability. The modified Tessier procedure provided better predictions of Zn uptake by plants than BCR, but not better than those obtained with the HCl extraction method

Application of deep learning methods to the mitigation of nonlinear effects in communication systems

En este trabajo se presentan tanto el desarrollo matemático e implementación de una red neural compleja como la aplicación del algoritmo Random Forest al problema de cálculo de importancias de los regresores utilizados en el modelado, basado en series de Voterra, de un amplificador de potencia. En primer lugar, se ha realizado una descripción de la situación actual de los algoritmos de aprendizaje profundo. En esta descripción se han ofrecido detalles sobre su origen, aplicaciones actuales y evolución. Seguidamente, se presenta una vista en profundidad del campo de las redes neuronales, que concluye con el desarrollo matemático de una red neuronal compleja. A continuación, se encuentra una introducción teórica a los amplificadores operacionales, el origen de su comportamiento no lineal y las diferentes soluciones que han sido estudiadas. La parte experimental se basa en la aplicación del algoritmo de Random Forest al cálculo de un vector de importancias de regresores, el cual podría ser usado para reducir un modelo de Volterra para ganar eficiencia energética sin perder demasiada precisión. Para la validación del algoritmo se ha utilizado una señal 5G-NR de 30 MHz, mientras que el amplificador operacional fue fijado a un punto de operación de +27:5 dBm de potencia media de salida, correspondiente a 1:2 dB de compresión de ganancia. Los resultados experimentales muestran las ventajas de este algoritmo respecto a otros.In this project, both a mathematical development of a Complex Valued Neural Network (CVNN) and the application of a Random Forest algorithm to Volverra regressors importance estimation are presented. Firstly, an overview about machine and deep learning algorithms is presented, where details about the origin, actual application and future are discussed. After this, an insight into the field of artificial neural networks (ANNs) is offered. This insight concludes with an explanation of the mathematical development of a CVNN. Following, a theoretical introduction to power amplifiers (PAs), the origin of their nonlinearities and the different solutions that have been approached is presented. Finally, experimental part is based on the application of Random Forest to Volterra regressors importance calculation, from which pruning decisions can be made. The validation of the presented technique was executed over a 30 MHz 5G-NR signal. The PA operating point was fixed to +27:5 dBm of average output power which corresponds to 1:2 dB of gain compression. Experimental results are illustrated with figures which show the advantages of this algorithm against others.Universidad de Sevilla. Grado en Ingeniería de las Tecnologías de Telecomunicació

Covid 19 y protección de datos. Breve comentario a los informes de las autoridades española y europea

Análisis del tratamiento del COVID19 desde la perspectiva de la Protección de Datos de carácter personal.2019-2

Acquired periungual fibrokeratoma: surgery treatment

Acquired periungual fibrokeratoma is a benign fibroepitelial tumor, relatively common, but with minor incidence at the foot. It is characterized by presenting a fleshy mass covered with hyperpigmented skin and with hyperqueratosis in its distal portion, whose consistence is strong and "indurada" with a size that varies from 5 to 10 mm in length. Sometimes it can be painful after minor trauma or it can even bleed. In that case, surgical treatment can be suggested, as in the case reported. We present the case of a 31 years old patient, who comes to the office due to a painful isolated periungeal fibroma at the level of the third right toe, being recommended the surgical excision of the mass. Blood analysis and dorsolateral and dorsoplantar x-rays are required, to make sure that there´s no evidence of underlying bony pathology. The surgical technique has been carried out, under local anaesthesia making an elliptical incision following the lines of tension of the skin, and removing the fibroma. Sutures were necessary to heal the wound. After removing the mass, a biopsy was carried out and sent to the pathological anatomy department to ensure the diagnosis. The postoperative period was painless and the appearance of the toe was excellent. After one year follow-up, nor recurrences or associated problems appeared. We conclude that acquired periungual fibrokeratoma represents a well defined clinically and histologically benign tumor, easily diagnosed. The surgical approach appears to be as the best way to manage the situation definitively.Acquired periungual fibrokeratoma is a benign fibroepitelial tumor, relatively common, but with minor incidence at the foot. It is characterized by presenting a fleshy mass covered with hyperpigmented skin and with hyperqueratosis in its distal portion, whose consistence is strong and "indurada" with a size that varies from 5 to 10 mm in length. Sometimes it can be painful after minor trauma or it can even bleed. In that case, surgical treatment can be suggested, as in the case reported. We present the case of a 31 years old patient, who comes to the office due to a painful isolated periungeal fibroma at the level of the third right toe, being recommended the surgical excision of the mass. Blood analysis and dorsolateral and dorsoplantar x-rays are required, to make sure that there´s no evidence of underlying bony pathology. The surgical technique has been carried out, under local anaesthesia making an elliptical incision following the lines of tension of the skin, and removing the fibroma. Sutures were necessary to heal the wound. After removing the mass, a biopsy was carried out and sent to the pathological anatomy department to ensure the diagnosis. The postoperative period was painless and the appearance of the toe was excellent. After one year follow-up, nor recurrences or associated problems appeared. We conclude that acquired periungual fibrokeratoma represents a well defined clinically and histologically benign tumor, easily diagnosed. The surgical approach appears to be as the best way to manage the situation definitively

Hipoacusia neurosensorial. Propuesta terapéutica alternativa en sujetos que no pueden acceder al implante coclear: lectura labial.

El presente documento ha sido elaborado como Trabajo Fin de Grado de Logopedia. El motivo del mismo es lograr concienciar a los profesionales de que nunca un paciente debe adaptarse a un método de intervención logopédico. Por ello, en los distintos puntos que componen este trabajo se busca adaptar una propuesta de intervención (entrenamiento labiolector) a un caso concreto (hipoacusia neurosensorial) teniendo en cuenta sus déficits y necesidades. A su vez se expondrán las limitaciones de la lectura labial y los recursos facilitadores que se pueden emplear para solventarlas: palabra complementada, dactilología y Autocuer.Grado en Logopedi

La Configuración Constitucional del Derecho Fundamental a la Protección de Datos: su Concreción Legal y Formas de Ejercicio

1. Introducción. 2. Antecedentes: los orígenes de la libertad informática. 3. Configuración constitucional del derecho a la protección de datos. 4. Una regulación liderada por la UE: la libre circulación de los datos. 5. Las diversas concreciones del derecho a la protección de datos. 5.1. Caracterización general. 5.2. Derecho de acceso. 5.3. El derecho de rectificación. 5.4. Derecho de cancelación o supresión y el derecho al olvido. 5.5. Derecho de oposición y decisiones individuales automatizadas. 5.5.1. Derecho de oposición ante tratamientos que no requieran el consentimiento de los interesados y tratamientos con finalidades publicitarias y de prospección comercial. 5.5.2. Derecho de oposición ante decisiones individuales automatizadas. 5.6. El derecho a la limitación de los datos. 5.7. El derecho a la portabilidad de los datos. 6. El ejercicio del derecho a la protección de datos ante las autoridades administrativas. 6.1. Actuaciones previas. 6.2. Especialidades. 6.3. Excepciones. 6.4. Procedimiento ante la aepd. 7. Conclusiones. 8. Bibliografía. 9. Abreviaturas.2019-2

El lugar de la familia en la escuela

Este informe resume la primera parte del proyecto de investigaci&oacute;n "El lugar de la familia en&nbsp;la escuela" que se desarrolla en la Universidad Cat&oacute;lica de Santiago del Estero (UCSE),&nbsp;Departamento Acad&eacute;mico Buenos Aires (DABA). El trabajo de campo, de corte etnogr&aacute;fico,&nbsp;realizado en una escuela cat&oacute;lica de la zona norte &nbsp;del conurbano bonaerense, permiti&oacute; el&nbsp;hallazgo de un actor familiar que, por su presencia en la instituci&oacute;n y por sus formas&nbsp;organizativas, se constituy&oacute; en unidad de an&aacute;lisis &nbsp;para la segunda etapa del proyecto. De&nbsp;esa forma, el objetivo originario, que consist&iacute;a en la exploraci&oacute;n de las representaciones&nbsp;familiares, se transform&oacute; en el relevamiento y an&aacute;lisis de las formas en que las familias se&nbsp;construyen un lugar activo de participaci&oacute;n en la escuela media

La Buena Administración en el Procedimiento Administrativo

La regla básica para conseguir una buena administración es que ésta se encuentre sometida a la Ley. Como es bien sabido, el uso de las nuevas tecnologías se ha implantado en la Administración Pública, de ahí que, sin olvidar el res-to de principios y reglas de buena administración, la prin-cipal misión de la actual normativa sea la de implantar, de una vez por todas, el llamado expediente electrónico, de manera que la supresión del papel y la comunicación por medios electrónicos sea la tónica general.2019-2

Percepção dos estudantes sobre comportamento no ensino do professor e satisfação com a Educação Física: uma questão de gênero?

Este estudio analiza la satisfacción con la Educación Física (EF) y la percepción del comportamiento instructivo del profesor (CIP). Participaron 2.536 estudiantes (edad 13,7 ± 2,0). Se aplicaron dos escalas: a) escala de satisfacción con la EF; y b) escala de comportamientos instructivos del profesorado. Los resultados muestran una elevada satisfacción con la EF y la percepción de una buena frecuencia del CIP. Existen algunas diferencias significativas en función del género de los alumnos y profesores. No se produce empatía de género descrita en otros estudios: chicos y chicas perciben mayor frecuencia de comportamientos instructivos deseables cuando el profesor es mujer.Este trabalho analisa a satisfação com a educação física (EF) e a percepção do comportamento no ensino do professor. Participaram 2.536 estudantes (idade 13,77 ± 2,0). Foram aplicadas duas escalas: a) escala de satisfação com a educação física; y b) escala de comportamento no ensino dos professores. Os resultados demonstram uma alta satisfação com a EF, bem como a percepção de uma boa freqüência do comportamento no ensino do professor. Existem algumas diferenças significativas em função do gênero dos alunos e professores. Não há relação direta de simpatia de gênero encontrada em outros estudos: meninos e meninas percebem com mais frequência um comportamento no ensino do professor de maneira desejável, quando ele é uma mulher.The purposes of this study were to analyze the satisfaction with PE and the perception of the students about of the Teacher´ Instructional Behaviours. Participants were 2,536 students (13.7 ± 2.0 years old). Two scales were applied: a) the satisfaction with PE scale; and b) the scale of perception of the Teacher´ Instructional Behaviours. The results illustrate a high level of satisfaction with PE. Students perceive instructional desirable behaviours of their teachers occur frequently. The findings show some significant differences in gender. There is not empathy of gender: both boys and girls perceive more f requent instructional desirable behaviour when the teacher is female.Estudio financiado por el Ministerio Español de Ciencia y Tecnología (Proyecto código SEJ2007-67267/EDU