BIORREMEDIACIÓN DE SUELOS CONTAMINADOS POR ORGANOCLORADOS MEDIANTE LA ESTIMULACIÓN DE MICROORGANISMOS AUTÓCTONOS, UTILIZANDO BIOSÓLIDOS

The present investigation evaluated the process of bioremediation of organochlorine pesticides in a soil of the agricultural airport "The Picacho" of Chinandega's Department, Nicaragua, in that there are registered big concentrations of toxafeno. The biostimulation technique was used in the bioremediation process, using biosolids as source of essential nutrients for the microorganisms. The experimental design consisted of 2 completely randomized blocks, each one with 3 experimental units, contemplating 6 microcosms of soil. To every treatment one added different proportions of biosolids establishing relations soil:biosolid of 71:29 and 77:23. On having finished the treatments percentages of remediation were obtained between 84 % and 69 % respectively. This demonstrates the efficiency of the biosolids as source of nutrients for the metabolic stimulation of autochthonous microorganisms in the process of bioremediation of soils contaminated with toxafeno.La presente investigación evaluó el proceso de biorremediación de plaguicidas organoclorados en un suelo del aeródromo agrícola “El Picacho” del Departamento de Chinandega, Nicaragua, en el que se registran grandes concentraciones de toxafeno. Se empleó la técnica de bioestimulación en el proceso de biorremediación, utilizando biosólidos como fuente de nutrientes esenciales para los microorganismos. El diseño experimental constó de 2 bloques completamente aleatorizados, cada uno con 3 unidades experimentales, contemplando 6 microcosmos de suelo. A cada tratamiento se agregó diferentes proporciones de biosólido estableciendo relaciones suelo: biosólido de 71:29 y 77:23. Al finalizar los tratamientos se obtuvieron porcentajes de remediación entre 84% y 69% respectivamente. Esto evidencia la efectividad de los biosólidos como fuente de nutrientes para la estimulación metabólica de microorganismos autóctonos en el proceso de biorremediación de suelos contaminados con toxafeno.

BIORREMEDIACIÓN DE SUELOS CONTAMINADOS POR ORGANOCLORADOS MEDIANTE LA ESTIMULACIÓN DE MICROORGANISMOS AUTÓCTONOS, UTILIZANDO BIOSÓLIDOS

The present investigation evaluated the process of bioremediation of organochlorine pesticides in a soil of the agricultural airport "The Picacho" of Chinandega's Department, Nicaragua, in that there are registered big concentrations of toxafeno. The biostimulation technique was used in the bioremediation process, using biosolids as source of essential nutrients for the microorganisms. The experimental design consisted of 2 completely randomized blocks, each one with 3 experimental units, contemplating 6 microcosms of soil. To every treatment one added different proportions of biosolids establishing relations soil:biosolid of 71:29 and 77:23. On having finished the treatments percentages of remediation were obtained between 84 % and 69 % respectively. This demonstrates the efficiency of the biosolids as source of nutrients for the metabolic stimulation of autochthonous microorganisms in the process of bioremediation of soils contaminated with toxafeno.La presente investigación evaluó el proceso de biorremediación de plaguicidas organoclorados en un suelo del aeródromo agrícola “El Picacho” del Departamento de Chinandega, Nicaragua, en el que se registran grandes concentraciones de toxafeno. Se empleó la técnica de bioestimulación en el proceso de biorremediación, utilizando biosólidos como fuente de nutrientes esenciales para los microorganismos. El diseño experimental constó de 2 bloques completamente aleatorizados, cada uno con 3 unidades experimentales, contemplando 6 microcosmos de suelo. A cada tratamiento se agregó diferentes proporciones de biosólido estableciendo relaciones suelo: biosólido de 71:29 y 77:23. Al finalizar los tratamientos se obtuvieron porcentajes de remediación entre 84% y 69% respectivamente. Esto evidencia la efectividad de los biosólidos como fuente de nutrientes para la estimulación metabólica de microorganismos autóctonos en el proceso de biorremediación de suelos contaminados con toxafeno.

Comparación de tres frecuencias de remoción de frutos enfermos en el control de Monilia roreri Cif. y Par.

Se estudió el efecto de varias frecuencias de remoción de frutos enfermos en la incidencia de Monilia y en los rendimientos de cadao en grano. El ensayo se realizó en una plantación de cacao de híbrido ICS 6 x SCA 6 de 4 años de edad, localizada en la Estación Experimental Tulenapa, en Chigorodó (Antioquia). Los tratamientos comparados fueron 3, a saber: recolección de frutos enfermos una vez por semana, recolección de frutos enfermos dos veces por semana y recolección de frutos enfermos una vez al mes. Los resultados indican que las frecuencias de remoción de material enfermo una y dos veces por semana ejercen un control satisfactorio de la enfermedad. La remoción de frutos una vez por semana, determina un incremento de la producción de cacao en grano de orden de 398 k sobre el tratamientos de remoción de frutos enfermos una vez al mes. En los 4 meses posteriores al período seco se registraron las más bajas incidencias de Monilia y no hubo diferecia entre los tratamientos. Este resultado se atribuye al efecto represivo del verano sobre la enfermedad

Variation of larval size and adult emergence period of Boyeria irene (Fonscolombe, 1838) (Odonata: Aeshnidae) in the Francia River of western Spain

Boyeria irene (Fonscolombe, 1838) is a large dragonfly common in rivers and streams in southern Europe, but it is little known about the biometrical variations of their populations. In this paper, we test whether the time of the emergence period of this species differs in the same river, whether the larval size varies during the emergence period, and whether the distinct size variations are associated with the different river sections. Results have revealed that 1) female exuviae are larger than those of males, 2) except for the paraproct length, the exuviae have similar size across the entire river length, 3) size of the exuviae is larger in the first period of emergence than in the second one. A difference in emergence duration across the three river sections has been recorded.info:eu-repo/semantics/publishedVersio

Valorization of Cistus ladanifer and Erica arborea shrubs for fuel: Wood and bark thermal characterization

As a form of upgraded biomass characterized by its high energy density, low production costs, and low process energy requirements, wood pellets are an environmentally friendly fuel allowing for carbon neutral heating with high energy efficiency. In this work, the suitability of a valorization of the woods from the two most representative shrub species from the Iberian Peninsula (namely Cistus ladanifer and Erica arborea) for heating has been assessed. Whereas Erica arborea met the requirements of ISO 17225-2:2014 for ENplus-B class (the calorific content for both wood and bark was high and not significantly different, and the ash content was permissible for specimens with branch diameter =2, 8 cm), Cistus ladanifer was in the limit of the normative and only met the requirements in terms of acceptable ash percentage (1, 9%) and heating value (19 kJ·g-1) for old specimens with branch diameters > 3, 4 cm. Consequently, while the harvest of E. arborea for its use as fuel does not need to be selective, that of C. ladanifer should be limited to the most robust specimens and foliage should be avoided

Mediterranean shrublands as carbon sinks for climate change mitigation: new root-to-shoot ratios

Shrublands play an important role in the reduction of atmospheric CO2 and contribute to the mitigation of the effects of climate change, due to their ability to act as carbon sinks and the large expanses of land involved. Two of the most representative shrub species in the Iberian Peninsula, Cistus ladanifer L. and Erica arborea L., were studied in terms of biomass distribution and carbon and nitrogen contents in the different fractions. With a view to fast and cost-effective estimation of radical biomass, a new procedure for easy root-to-shoot calculation based on vibrational data was proposed, resulting in an excellent agreement with the values obtained from conventional direct belowground and aerial biomass measurements: 0.23 for C. ladanifer and 0.54 for E. arborea. Carbon sequestration, estimated at 45 and 73 t CO2 eq·ha-1 for C. ladanifer and E. arborea, respectively, was subsequently determined. Since these values are substantially higher than those of other shrubs, these two key species can be deemed particularly promising for ecological restoration and carbon offsetting

Musicoterapia en una Unidad de Cuidados Intensivos Neonatales: experiencia benéfica para el binomio

ResumenIntroducciónDesde hace varios años se está utilizando la música como herramienta terapéutica y preventiva en la neonatología, se han documentado en un gran número de artículos de investigación, sin embargo, en México esta técnica es poco utilizada.ObjetivoMejorar las condiciones de los neonatos atendidos en una Unidad de Cuidados Intensivos (UCIN) y sus familiares, mediante el uso de musicoterapia, para minimizar el estrés y los daños colaterales.Materiales y métodosUn grupo de 2 neonatólogos, 3 residentes de pediatría, 10 enfermeras y un concertista profesional de violín, llevaron a cabo 6 sesiones musicales semanales en la Unidad de Cuidados Intensivos Neonatales Externos del Hospital Civil de Guadalajara. Durante el concierto se valoró individualmente a cada neonato, registrando los signos vitales por monitorización electrónica, además se registró el estado anímico de los familiares.ResultadosDurante las sesiones de música los neonatales no presentaron cambios significativos en sus constantes vitales, en el personal de la UCIN y en los padres de recién nacidos hospitalizados se vieron efectos benéficos, refiriendo disminución del estrés y altos índices de satisfacción.ConclusionesLa música puede tener un efecto positivo como terapia coadyuvante en neonatos de alto riesgo, principalmente en prematuros. Se recomienda difundir y aplicar esta metodología en las UCIN del país.AbstractIntroductionSince several years ago, music has been used as a therapeutic and preventive tool in neonatology. A great number of research papers have been written on the subject; however, this technique is rarely used in Mexico.ObjectiveTo improve the condition of neonates at Neonatal Intensive Care Units (NICU) and their relatives, in order to minimize any stress and collateral damage.Material and methods: A group of two neonatologists, 3 residents, 10 nurses and a professional concert violinist, conducted six weekly music sessions in the Outpatient Neonatal Intensive Care Unit (ONICU) of our institution. During the concert, we individually assessed each newborn, recording vital signs through electronic monitoring; additionally, we recorded the mood of any other family members present.ResultsDuring the music sessions, the neonatal patients showed no significant changes in vital signs; yet, ONICU staff and the parents/relatives of hospitalized newborns showed beneficial effects, reporting decreased stress and high levels of satisfaction.ConclusionsMusic can have a positive effect as adjunctive therapy in high-risk newborns, especially in premature babies. We therefore recommend applying this methodology in the ONICU

Implementation and analysis of list mode algorithm using tubes of response on a dedicated brain and breast PET

In this work we present an innovative algorithm for the reconstruction of PET images based on the List-Mode (LM) technique which improves their spatial resolution compared to results obtained with current MLEM algorithms. This study appears as a part of a large project with the aim of improving diagnosis in early Alzheimer disease stages by means of a newly developed hybrid PET-MR insert. At the present, Alzheimer is the most relevant neurodegenerative disease and the best way to apply an effective treatment is its early diagnosis. The PET device will consist of several monolithic LYSO crystals coupled to SiPM detectors. Monolithic crystals can reduce scanner costs with the advantage to enable implementation of very small virtual pixels in their geometry. This is especially useful for LM reconstruction algorithms, since they do not need a pre-calculated system matrix. We have developed an LM algorithm which has been initially tested with a large aperture (186 mm) breast PET system. Such an algorithm instead of using the common lines of response, incorporates a novel calculation of tubes of response. The new approach improves the volumetric spatial resolution about a factor 2 at the border of the field of view when compared with traditionally used MLEM algorithm. Moreover, it has also shown to decrease the image noise, thus increasing the image quality. © 2012 Elsevier B.V. All rights reserved.This work was supported by the Centre for Industrial Technological Development co-funded by FEDER through the Technology Fund (DREAM Project, IDI-20110718), by the Spanish Plan Nacional de Investigacion Cientifica, Desarrollo e Innovacion Tecnologica (I+D+I) under Grant. No. FIS2010-21216-CO2-01TEO 2008/114.Moliner Martínez, L.; Correcher, C.; González Martínez, AJ.; Conde Castellanos, PE.; Hernández Hernández, L.; Orero Palomares, A.; Rodríguez Álvarez, MJ.... (2013). Implementation and analysis of list mode algorithm using tubes of response on a dedicated brain and breast PET. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 702:129-132. https://doi.org/10.1016/j.nima.2012.08.029S12913270

Regionalización de la variación temporal del factor de turbidez linke TL en México a partir de algoritmos de machine learning

CIES2020 - XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia SolarRESUMEN: El agrupamiento de áreas geográficas, por medio de análisis de clusters, es una tarea que permite identificar regiones de acuerdo a los comportamientos de las variables geoclimáticas. En este trabajo de investigación se agrupó al TL Linke en regiones similares de la república mexicana de acuerdo con su varianza temporal anual del año 2015. Mediante algoritmos y técnicas de Machine Learning (aprendizaje automático), como son las mezclas de gaussianos mixtos y análisis de componentes principales, se han obtenido dos mapas, de 10 y 9 regiones que permiten identificar de una manera visual dichas regiones y analizar el comportamiento del TL Linke en la república mexicana.ABSTRACT: The clustering of geographic zones, by cluster analysis, is a task which enables to identify geographic’s regions according to the behavior of geoclimatic’s variables. In this work, the TL Linke was grouped in similar regions in the Mexico country according to the temporal annual variance of the year 2015. Using machine learning algorithms and techniques like Gaussian mixture models and principal components analysis, we obtained two maps of 10 and 9 regions which enables identify and analyze the TL Linkes behavior on Mexico country.info:eu-repo/semantics/publishedVersio