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Diversity and distribution of tardigrades (Bilateria, Tardigrada) from the Iberian Peninsula, Balearic Islands and Chafarinas Islands
Guil, Noemí
Graellsia , 2002,
Abstract: Bibliographical information on the Tardigrada from Iberian Peninsula, Balearic Islands and Chafarinas Islands is compiled herein. 118 species are listed from the studied area. The first records of six Tardigrada species, Dactylobiotus parthenogeneticus, Dactylobiotus selenicus, Murrayon dianeae, Diphascon (Diphascon) nodulosum (first time in Europe), Diphascon (Diphascon) pingue and Isohypsibius marcellinoi that had not previously been found in the area are included. Bibliography data are analysed. After the analysis, it is concluded that more intensive, extensive and within more diverse habitats sampling effort should significantly increase the knowledge of tardigrade diversity in the studied area. En este artículo hemos recopilado la información existente en la bibliografía acerca del phylum Tardigrada en la Península Ibérica, Islas Baleares e Islas Chafarinas. La lista de especies del phylum Tardigrada incluye 118 especies en el área de estudio. Además, incluimos seis especies encontradas por primera vez en el área de estudio: Dactylobiotus parthenogeneticus, Dactylobiotus selenicus, Murrayon dianeae, Diphascon (Diphascon) nodulosum (por primera vez encontrado en Europa), Diphascon (Diphascon) pingue e Isohypsibius marcellinoi. En base al análisis realizado con los datos recopilados de la bibliografía, podemos concluir que un peque o aumento en el esfuerzo de muestreo (intensivo, extensivo y aumentando la diversidad de hábitats recolectados) se traduce en un aumento significativo de la diversidad del phylum en el área estudiada.
Mujeres y ciencia: techos de cristal
Ana Guil Bozal
Eccos Revista Científica , 2008,
Abstract:
Probabilistic Perception, Empathy, and Dynamic Homeostasis: Insights in Autism Spectrum Disorders and Conduct Disorders
Jean Marc Guilé
Frontiers in Public Health , 2014, DOI: 10.3389/fpubh.2014.00004
Abstract: Homeostasis is not a permanent and stable state but instead results from conflicting forces. Therefore, infants have to engage in dynamic exchanges with their environment, in biological, cognitive, and affective domains. Empathy is an adaptive response to these environmental challenges, which contributes to reaching proper dynamic homeostasis and development. Empathy relies on implicit interactive processes, namely probabilistic perception and synchrony, which will be reviewed in the article. If typically-developed neonates are fully equipped to automatically and synchronously interact with their human environment, conduct disorders (CD) and autism spectrum disorders (ASD) present with impairments in empathetic communication, e.g., emotional arousal and facial emotion processing. In addition sensorimotor resonance is lacking in ASD, and emotional concern and semantic empathy are impaired in CD with Callous-Unemotional traits.
The Three-Wave Resonant Interaction: Deformation of the Plane-Wave Solutions and Darboux Transformations
F. Guil,M. Ma?as
Physics , 1996,
Abstract: The plane wave solutions of the three-wave resonant interaction in the plane are considered. It is shown that rank-one constraints over the right derivatives of invertible operators on an arbitrary linear space gives solutions of the three-wave resonant interaction that can be understood as a Darboux transformation of the plane wave solutions. The method is extended further to obtain general Darboux transformations: for any solution of the three-wave interaction problem and vector solutions of the corresponding Lax pair large families of new solutions, expressed in terms of Grammian type determinants of these vector solutions, are given.
Akns Hierarchy, Self-Similarity, String Equations and the Grassmannian
F. Guil,M. Manas
Physics , 1993, DOI: 10.1088/0305-4470/27/6/034
Abstract: In this paper the Galilean, scaling and translational self--similarity conditions for the AKNS hierarchy are analysed geometrically in terms of the infinite dimensional Grassmannian. The string equations found recently by non--scaling limit analysis of the one--matrix model are shown to correspond to the Galilean self--similarity condition for this hierarchy. We describe, in terms of the initial data for the zero--curvature 1--form of the AKNS hierarchy, the moduli space of these self--similar solutions in the Sato Grassmannian. As a byproduct we characterize the points in the Segal--Wilson Grassmannian corresponding to the Sachs rational solutions of the AKNS equation and to the Nakamura--Hirota rational solutions of the NLS equation. An explicit 1--parameter family of Galilean self--similar solutions of the AKNS equation and the associated solution to the NLS equation is determined.
Two-Dimensional Integrable Systems and Self-Dual Yang-Mills Equations
Francisco Guil,Manuel Ma?as
Physics , 1993, DOI: 10.1063/1.530493
Abstract: The relation between two--dimensional integrable systems and four--dimen\-sional self--dual Yang--Mills equations is considered. Within the twistor description and the zero--curvature representation a method is given to associate self--dual Yang-Mills connections with integrable systems of the Korteweg--de Vries and non--linear Schr\"odinger type or principal chiral models. Examples of self--dual connections are constructed that as points in the moduli do not have two independent conformal symmetries.
Quality of extra virgin olive oil affected by several packaging variables
Guil-Guerrero, José Luis
Grasas y Aceites , 2009,
Abstract: The aim of this study was to determine the evolution of the quality index of three extra-virgin olive oil varieties (EVOO), stored according to different packaging variables for one year. The selected quality parameters were: acidity index, peroxide value (PV), K270 coefficient, fatty acid (FA) profile, carotenoids and chlorophylls. This study was carried out by monthly analyzing several bottled EVOO varieties -Picual, Hojiblanca and Arbequina- obtained during the present harvesting season. In addition, other Picual EVOO stored in a mill deposit, as well as bottled Picual EVOO from the previous harvesting season were analyzed monthly. The oils were packaged in dark and transparent glass bottles. The results showed that the acidity and K270 parameters increased slightly in all cases, while PV value changes were significant in EVOOs stored in transparent glass bottles. FA profiles were slightly modified throughout the storage period, although oleic acid slightly increased at the end of the analytical period, especially in the EVOO stored in deposits. Regarding pigment, chlorophylls losses were more noticeable than those related to carotenoid. According to the present results, the best packaging conditions for EVOO were deposits, followed by dark glass bottles. In addition, this study demonstrated that EVOO collected from the previous harvesting season and stored under nitrogen atmosphere could be packaged in glass bottles without appreciable quality changes, as compared with EVOO packaged in the same bottles and obtained during the current harvesting season. El objetivo de este estudio fue determinar la evolución de los índices de calidad de tres variedades de aceite de oliva virgen extra (EVOO), almacenado según diferentes condiciones durante un a o. Los parámetros de calidad seleccionados fueron: índice de acidez, valor de peróxidos (PV), coeficiente K270, perfil de ácidos grasos (FAs), carotenoides y clorofila. El estudio fue realizado analizando mensualmente tres variedades de EVOO: -Picual, Hojiblanca y Arbequinaobtenidas de la cosecha anual, envasado en botellas oscuras y transparentes de cristal. Otro aceite Picual envasado en depósitos fue también analizado mensualmente. Los resultados muestran que la acidez y el índice K270 aumentaron ligeramente en todos los casos, mientras que las variaciones del PV fueron más significativas en EVOO almacenado en botellas transparentes de cristal. Los cambios de perfiles de FAs fueron mínimos durante todo el período de almacenamiento, aunque el ácido oleico aumentó ligeramente al final del período de almacenami
ENTRE EUROPA Y AMéRICA LATINA: MERCEDES RODRIGO, PSICOPEDAGOGA PIONERA
Ana Guil Bozal,Sara Vera Gil
Revista Historia de la Educación Latinoamericana , 2011,
Abstract: Partiendo de la hipótesis de la amplia influencia que los trabajos de Mercedes Rodrigo Bellido han tenido en la Psicología y la Pedagogía, tanto espa ola como colombiana, nos dispusimos a llevar a cabo el presente trabajo de investigación. Nuestro objetivo general fue visibilizar la figura de esta autora a través de la revisión de su obra, así como de los escritos que sobre ella han dejado otras autoras, como Fania Herrero, quien elaboró su tesis doctoral en torno a esta psicopedagoga semi-oculta en el pasado. Tras la revisión de los textos seleccionados encontramos que la figura de Mercedes Rodrigo Bellido fue especialmente importante para la Psicología colombiana, siendo su mayor contribución la creación del primer programa de formación en Psicología, que pudo extender por toda América Latina. Así mismo, fue artífice de otras muchas importantes contribuciones relacionadas especialmente con la creación de puentes entre la psicopedagogía europea y la espa ola, o con la toma de conciencia de que la Psicología tenía que tener su propio campo de trabajo, ya que sus contenidos venían siendo abordados desde diversas especialidades tales como la Medicina o la Teología. En Espa a, tuvo además un importante papel en los inicios de la Psicología Aplicada. Todas sus estas importantes aportaciones de Mercedes Rodrigo Bellido contrastan con la escasa atención que hasta ahora esta eminente psicopedagoga madrile a ha tenido en nuestro campo de conocimiento.
On the Whitham Hierarchies: Reductions and Hodograph Solutions
Francisco Guil,Manuel Manas,Luis Martinez Alonso
Physics , 2002, DOI: 10.1088/0305-4470/36/14/309
Abstract: A general scheme for analyzing reductions of Whitham hierarchies is presented. It is based on a method for determining the $S$-function by means of a system of first order partial differential equations. Compatibility systems of differential equations characterizing both reductions and hodograph solutions of Whitham hierarchies are obtained. The method is illustrated by exhibiting solutions of integrable models such as the dispersionless Toda equation (heavenly equation) and the generalized Benney system.
On Twistor Solutions of the dKP Equation
Francisco Guil,Manuel Manas,Luis Martinez Alonso
Physics , 2002,
Abstract: The factorization problem for the group of canonical transformations close to the identity and the corresponding twistor equations for an ample family of canonical variables are considered. A method to deal with these reductions is developed for the construction classes of nontrivial solutions of the dKP equation.
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