Ni-Mn-Ga films in the austenite and the martensite structures at room temperature: Uniaxial texturation and epitaxial growth

Ni-Mn-Ga films in the austenite and the martensite structures at room temperature have been obtained using the DC magnetron sputtering technique. Two elaboration processes were studied. A first batch of samples was deposited using a resist sacrificial layer in order to release the film from the substrate before vacuum annealing. This process leads to polycrystalline films with a strong (022) fiber texture. The martensitic phase transformation of such polycrystalline freestanding films has been studied by optical and scanning electron microscopy. A second batch of samples was grown epitaxially on (100)MgO substrates using different deposition temperatures. The texture has been analyzed with four-circle X-ray diffraction. Epitaxial films crystallized both in the austenite and the martensite structures at room temperature have been studied

Soybean responseto initial stage of Fusarium virguliforme infection

Fusarium virguliforme causes the Sudden Death Syndrome, an important disease in soybean crops. In this work, we investigated the defensive response mechanisms in soybean root, at cell wall level, during F. virguliforme infection using an in vitro culture system. We measured total root lignin content by the acetyl bromide method and estimated the in-situ lignin and suberin deposition by confocal microscopy on local and systemic root tissues, i.e. adjacent and distant to the pathogen entry site respectively. Moreover, the expression dynamics of phenylalanine ammonia lyase (PAL), shikimate/quinate hydroxycinnamoyltransferase (HCT) and cinnamyl alcohol dehydrogenase (CAD) was evaluated by real-time quantitative PCR. The results showed that, although the most significant increment of lignin deposition was observed in the epidermal cells of local tissues, F. virguliforme also induced lignin deposition changes in a sistemic fashion. In fact, inoculated plants presented a higher deposition of lignin in hypodermis and cortex than the control ones, independently of the distance from the inoculum source, while suberin deposition was higher in local zones. Moreover, the gene expression analysis showed an up-regulation of PAL, HCT and CAD genes after the inoculation with the pathogen, which correlates with the cell wall modifications observed in the local tissues. The results presented here suggest that the increase in lignin and suberin deposition during soybean root/F. virguliforme interaction is probably a strategy not only to stop the pathogen entrance, but to provide the plant more time to prepare its defences as well.Instituto de Patología VegetalFil: Giachero, María Lorena. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Marquez, Nathalie. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Ortega, Leandro Ismael. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; ArgentinaFil: Ducasse, Daniel Adrian. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentin

EDITORIAL

Academia & Derecho lleva a sus lectores artículos de los más variados temas, muestra de las preocupaciones y debates propios de la época y que, son objeto de análisis, revisión y validación por pares y expertos. Cada nuevo número es la suma de esfuerzos de todos aquellos que participamos en un proceso editorial: autores, coautores, editores, comité editorial, auxiliares, asesores, evaluadores externos. Voces y testimonios cuya presencia se advierte en las páginas de cada artículo que llevamos a nuestros lectores.    Como es característico de nuestro proceso editorial, con esta nueva versión de Academia & Derecho traemos a nuestros lectores artículos de investigación de gran calidad académica y científica. Trabajos que son cuidadosamente seleccionados y puestos a su disposición para que el proceso continúe con cada lectura, réplica, citación, referencia o falsación.   En las páginas de la edición No. 23 de Academia & Derecho los lectores encontrarán trabajos de investigación que muestran miradas particulares y complejas a diferentes problemas del derecho o de la enseñanza del derecho cuyo abordaje se puede realizar desde la ciencia jurídica y otras áreas relacionadas

EDITORIAL

Academia & Derecho lleva a sus lectores artículos de los más variados temas, muestra de las preocupaciones y debates propios de la época y que, son objeto de análisis, revisión y validación por pares y expertos.Los artículos, cuidadosamente examinados y ajustados, contienen investigaciones, reflexiones y discusiones sobre asuntos del Derecho actual y de la enseñanza del derecho. Desde su creación, la revista ofrece un diálogo transversal con elDerecho, la filosofía, la política y la justicia, es un espacio para la revisión de la legislación vigente, para cuestionar los paradigmas y proponer otras lecturas y otras maneras de resolver los problemas que convocan a la ciencia y la academia;un lugar para converger y para formular nuevas preguntas y considerar otras formas de ser y pensar el derecho

Editorial

Academia & Derecho lleva a sus lectores artículos de los más variados temas, muestra de las preocupaciones y debates propios de la época y que, son objeto de análisis, revisión y validación por pares y expertos.  Con cada nuevo número se entrega a los lectores trabajos de excelente calidad científica y académica que son resultado del empeño y dedicación de autores y coautores, así como de la cuidadosa revisión de los miembros del comité de árbitros externos, y de quienes, en calidad de editores o miembros del comité editorial, aportan sus conocimientos y experiencia en cada proceso

The biota of the Upper Cretaceous site of Lo Hueco (Cuenca, Spain)

The Late Cretaceous (Campanian-Maastrichtian) fossil site of Lo Hueco was recently discovered close to the village of Fuentes (Cuenca, Spain) during the cutting of a little hill for installation of the railway of the Madrid-Levante high-speed train. To date, it has yielded a rich collection of well-preserved Cretaceous macrofossils, including plants, invertebrates, and vertebrates. The recovered fossil assemblage is mainly composed of plants, molluscs (bivalves and gastropods), actinopterygians and teleosteans fishes, amphibians, panpleurodiran (bothremydids) and pancryptodiran turtles, squamate lizards, eusuchian crocodyliforms, rhabdodontid ornithopods, theropods (mainly dromaeosaurids), and titanosaur sauropods. This assemblage was deposited in a near-coast continental muddy floodplain crossed by distri-butary sandy channels, exposed intermittently to brackish or marine and freshwater flooding as well as to partial or total desiccation events

Sífilis secundaria en un paciente VIH positivo

La incidencia de afecciones orales, antes infrecuentes en pacientes infectados por VIH, se está incrementando y es posible que se subestime. Las lesiones orales resultantes de la sífilis secundaria son raras; sin embargo, ocurren, y el odontólogo debería ser capaz de realizar un correcto diagnóstico. En algunos casos la anámnesis y los signos clínicos de las lesiones son insuficientes para permitir el diagnóstico de la enfermedad. El conocimiento de sus características histológicas y las pruebas de laboratorio relevantes, así como su aplicabilidad y limitaciones son necesarios para el correcto diagnóstico de la sífilis secundaria.The incidence of oral manifestations of HIV infection is changing markedly. Oral afflictions previously uncommon in HIV condition are now emerging in this scenario and may be underestimated. Clinical characteristics of some oral diseases could change in the presence of HIV/AIDS infection and health care professionals must be made aware of such changes. Oral lesions of secondary syphilis are rare, however they can occur and the dentist should be able to diagnose them. In some cases the anamnesis and the clinical features of the lesions are not enough to diagnose this disease. Histological features and an acute knowledge on laboratory exams, as well as its applicability and limitations are necessary to diagnose it. The present report describes a case of secondary syphilis in an HIV positive patient. The patient showed red spots in the torso's skin and abdomen. The spots were also present on the hands but the color was darker. The oral mucosa had several ulcers, with variable shapes, sometimes recovered by a white and resistant membrane. They were present in the buccal mucosa, palate, gingiva, tongue and labial mucosa. Those clinical manifestations appeared 6 months earlier. Exams were performed (VDRL, FTA-abs, direct fungal exams in the skin and oral mucosa and a biopsy in the oral mucosa) but the diagnose remained unclear. Clinical and laboratory features disagreed and postponed the final diagnosis and the treatment for more than 6 months

The role of heart rate on the associations between body composition and heart rate variability in children with overweight/obesity : the ActiveBrains project

Background: Heart rate variability (HRV) is negatively associated with body mass index and adiposity in several populations. However, less information is available about this association in children with overweight and obesity, especially severe/morbid obesity, taking into consideration the dependence of HRV on heart rate (HR). Objectives: (1) to examine associations between body composition measures and HRV, (2) to study differences in HRV between children with overweight and severe/morbid obesity; and (3) to test whether relationships and differences tested in objectives 1 and 2, respectively are explained by the dependency of HRV on HR. Methods: A total of 107 children with overweight/obesity (58% boys, 10.03 +/- 1.13 years) participated in this study. Body composition measures were evaluated by Dual-energy X-ray absorptiometry (DXA). HRV parameters were measured with Polar RS800CXR (R). Results: Body composition measures were negatively associated with HRV indicators of parasympathetic activity (beta values ranging from -0.207 to -0.307, all p 0.05). Conclusion: All associations between adiposity/obesity and HRV could be explained by HR, suggesting a key confounding role of HR in HRV studies in children with weight disturbances