On the Moyal deformation of Nahm Equations in seven dimensions

We show how the reduced (anti-)self-dual Yang-Mills equations in seven dimensions described by the Nahm equations can be carried over to the Weyl-Wigner-Moyal formalism. In the process some new solutions for the cases of gauge groups SU(2) and SL(2,R) are explicitly obtained.Comment: 16+1 pages, LaTeX, no figure

Influencia del Porcentaje de SiCp en el Comportamiento a la Corrosión de la Aleación AA6061 Obtenida por Compactación Isostática

Se ha estudiado el comportamiento a la corrosión de materiales compuestos A6061/SiCp obtenidos por compactación isostática y extrusión en caliente de polvos mediante ensayos de polarización cíclica. El estudio de la naturaleza de los productos de corrosión se ha llevado a cabo mediante Microscopía Electrónica de Barrido (SEM) después de la realización de los ensayos, con objeto de estudiar la influencia de la proporción de refuerzo en el comportamiento a la corrosión. El proceso de corrosión está significativamente influenciado por la adición de partículas reforzantes, debido a que las intercaras matriz/SiCp son centros preferentes de ataque localizado por picadura

Suelos de Gipuzkoa sobre argilitas : factores limitantes a su uso y conservación

En este estudio se caracterizan las propiedades de los suelos de Gipuzkoa desarrollados sobre argilitas y se evalúan en función de las limitaciones que presentan para su uso y conservación, por medio del Soil Fertility Capability Classification System de Buol (1972). Las principales características de estos suelos son su textura limosa a arcillosa, alta densidad aparente, contenidos bajos a moderados de materia orgánica, reacción ácida, déficit importante de nutrientes y elevada saturación de aluminio en el complejo de intercambio, además de situarse en áreas de topografía colinada. Estas propiedades hacen que sean muy susceptibles a la erosión y tengan problemas considerables para la nutrición de las plantas y toxicidad potencial por aluminioLan honetan Gipuzkoan argiliten gainean moldaturiko lurzoruen ezaugarriak aztertzen dira eta beraien erabilpen eta kontserbaziorako aurkezten dituzten mugak ebaluatzen dira, Buol-en Soil Fertility Capability Classification System delakoaren bidez (1972). Lurzoru hauen ezaugarri nagusiak: limo eta buztinaren arteko egitura, materia organikoen kopuru txiki edo moderatuak, erreakzio azidoa, nutrienteen eskasia nabarmena eta aluminio-saturazio handia elkartrukearen konplexuan, muino-topografia duten lekuetan kokatuak izateaz gain. Ezaugarri horiek direla eta, higaduraren menpe daude, landareen nutriziorako arazo handiak dituzte eta aluminiozko toxizitate potentzial handia duteDans la présente étude nous signalons les caractéristiques des sols de Gipuzkoa développés sur des argilites et nous les évaluons en fonction des limitationes qu'ils présentent du point de vue de leur utilisation et de leur conservation, en utilisant le Soil Fertility Capability Classification System de Buol (1972). Les principales caractéristiques de ces sols sont leur texture de limoneuse à argileuse, leur haute densité apparente, leurs contenus de bas à modérés de matière organique, leur réaction acide, leur déficit important en matiéres nourricières et leur importante saturation en aluminium dans le complexe d'échange, et également le fait qu'ils se trouvent dans des zones d'une topographie de collines. Ces caractéristiques les rendent très sensibles à l'érosion et posent des problèms considérables du point de vue de l'alimentation des plantes et de la toxicité potentielle par aluminiu

A topological charge selection rule for phase singularities

We present an study of the dynamics and decay pattern of phase singularities due to the action of a system with a discrete rotational symmetry of finite order. A topological charge conservation rule is identified. The role played by the underlying symmetry is emphasized. An effective model describing the short range dynamics of the vortex clusters has been designed. A method to engineer any desired configuration of clusters of phase singularities is proposed. Its flexibility to create and control clusters of vortices is discussed.Comment: 4 pages, 3 figure

Motor, jogo e necessidades especiais no ensino primário

Resumen: Introducción: dentro de la comunidad científica diversos estudios respaldan la idea de que la actividad física es el soporte del estilo de vida saludable, en el que gracias a su práctica se reduce el riesgo de padecer enfermedades. Además, se ha evidenciado que esta produce mejoras en procesos cognitivos particulares, aportando a la salud mental. Es hasta tiempos recientes donde se ha comenzado a investigar los efectos que produce en la población con capacidades diversas. Objetivos: establecer la relación que existe entre la motricidad, el juego, la educación física y las los alumnos con NEAE en el ámbito educativo. Métodos: todo ello se ha llevado a cabo con consultas bibliográficas y libros para que sea más eficaz su búsqueda. Resultado y discusión: tras la revisión bibliográfica sistematizada llevada a cabo se tiene que el desarrollo infantil se vincula de forma directa con el juego, ya que además de ser una actividad de tipo natural y espontánea a la que los niños dedican todo el tiempo posible, es también el medio por el cual desarrollan su propia personalidad. Se considera pertinente ofrecer respuestas educativas diferenciadas en la programación para atender a los niños con necesidades educativas especiales. Sin embargo, esto no implica la reducción de nivel de las actividades ni de la exigencia. Supone la elección de un camino más adecuado y acorde para alcanzar los objetivos educativos comunes a todo el grupo al que pertenece el menor, tomando en cuenta las situaciones grupales e individuales. Conclusiones: podemos observar que la actividad física adaptada cuenta con un reconocimiento social importante, producto del número de estudios e investigaciones llevados a cabo en su ámbito. Específicamente, al hablar de educación física se identificaron trabajos bajo el apelativo Educación Física Inclusiva, en la que los niños con necesidades especiales están integrados en centros escolares.Abstract: Introduction: Within the scientific community, several studies support the idea that physical activity supports a healthy lifestyle, in which its practice reduces the risk of disease. In addition, it has been shown that it produces improvements in particular cognitive processes, contributing to mental health. It is until recent times that research has begun on the effects it produces on the population with diverse abilities. Objectives: to establish the relationship between motor skills, play, physical education and students with ASD in the educational field. Methods: all this has been carried out with bibliographical consultations and books to make their search more effective. Results and discussion: after the systematized bibliographic review carried out, it was found that child development is directly linked to play, since besides being a natural and spontaneous activity to which children dedicate all the time possible, it is also the means by which they develop their own personality. It is considered pertinent to offer differentiated educational responses in programming to meet the needs of children with special educational needs. However, this does not imply a reduction in the level of activities or demands. It implies the choice of a more adequate and appropriate path to achieve the educational objectives common to the whole group to which the child belongs, taking into account group and individual situations. Conclusions: we can observe that adapted physical activity has an important social recognition, product of the number of studies and researches carried out in its field. Specifically, when talking about physical education, work was identified under the name of Inclusive Physical Education, in which children with special needs are integrated into schools.Resumo: Introdução: Dentro da comunidade científica, vários estudos apoiam a ideia de que a actividade física apoia um estilo de vida saudável, em que a sua prática reduz o risco de doença. Além disso, foi demonstrado que produz melhorias em processos cognitivos específicos, contribuindo para a saúde mental. Foi até há pouco tempo que se iniciou a investigação sobre os efeitos que esta produz na população com capacidades diversas. Objectivos: estabelecer a relação entre as capacidades motoras, o jogo, a educação física e os estudantes com DEA no domínio da educação. Métodos: tudo isto foi realizado com consultas bibliográficas e livros para tornar a sua pesquisa mais eficaz. Resultados e discussão: após a revisão bibliográfica sistematizada realizada, verificou-se que o desenvolvimento da criança está directamente ligado à brincadeira, pois além de ser uma actividade natural e espontânea à qual a criança se dedica o tempo todo, é também o meio pelo qual desenvolve a sua própria personalidade. Considera-se pertinente oferecer respostas educativas diferenciadas na programação para responder às necessidades das crianças com necessidades educativas especiais. No entanto, tal não implica uma redução do nível de actividades ou das exigências. Implica a escolha de um caminho mais adequado e apropriado para alcançar os objectivos educativos comuns a todo o grupo a que a criança pertence, tendo em conta as situações de grupo e individuais. Conclusões: podemos observar que a actividade física adaptada tem um importante reconhecimento social, produto do número de estudos e investigações realizados no seu domínio. Especificamente, ao falar de educação física, identificou-se o trabalho sob o nome de Educação Física Inclusiva, no qual as crianças com necessidades especiais são integradas nas escolas

Long-Term Adherence to IFN Beta-1a Treatment when Using RebiSmart® Device in Patients with Relapsing-Remitting Multiple Sclerosis

The effectiveness of disease-modifying drugs in the treatment of multiple sclerosis is associated with adherence. RebiSmart (R) electronic device provides useful information about adherence to the treatment with subcutaneous (sc) interferon (IFN) beta-1 alpha (Rebif (R)). The aim of the study was to determine long-term adherence to this treatment in patients with relapsing-remitting multiple sclerosis (RRMS). This retrospective multicentre observational study analysed 258 patients with RRMS who were receiving sc IFN beta-1 alpha (Rebif (R)) treatment by using RebiSmart (R) until replacement (36 months maximum lifetime) or treatment discontinuation. Adherence was calculated with data (injection dosage, time, and date) automatically recorded by RebiSmart (R). Patients in the study had a mean age of 41 years with a female proportion of 68%. Mean EDSS score at start of treatment was 1.8 (95% CI, 1.6-1.9). Overall adherence was 92.6%(95% CI, 90.6-94.5%). A total of 30.2% of patients achieved an adherence rate of 100%, 80.6% at least 90%, and only 13.2% of patients showed a suboptimal adherence (<80%). A total of 59.9% of subjects were relapse-free after treatment initiation. Among 106 subjects (41.1%) who experienced, on average, 1.4 relapses, the majority were mild (40.6%) or moderate (47.2%). Having experienced relapses from the beginning of the treatment was the only variable significantly related to achieving an adherence of at least 80% (OR = 3.06, 1.28-7.31). Results of this study indicate that sc IFN beta-1 alpha administration facilitated by RebiSmart (R) could lead to high rates of adherence to a prescribed dose regimen over 36 months

Post-fire ecological restoration in Latin American forest ecosystems: insights and lessons from the last two decades

Wildfires are responsible for a substantial loss of forest ecosystem services globally and represent a major driving force of forest degradation across Latin American and the Caribbean (LAC). The detrimental effect of forest fires is particularly relevant in regions where fire has been historically absent or has rarely occurred. Nowadays, there is an increasing interest to promote and develop ecological restoration (ER) following fire. LAC constitutes a hotspot where work and interest in ER has been steadily increasing over the last decades, mainly due to the drive of a new generation of young and experienced ecologists and foresters. Despite the increasing attention in post-fire restoration in the region, there is a dearth of initiatives compiling and organizing all the available information on this topic. This work aims to address such constraint, providing current information on post-fire ER in LAC forests. After a brief contextualization of environmental and social consequences of wildfires, we collect and discuss recent advances on restoring degraded forests. From the conifer Mexican ecosystems to the Southern Patagonian evergreen forests, we look back over the last two decades (2000–2020) mainly discussing experiences of success and failure, as well as limitations of implementing approaches based on passive/natural restoration or active/assisted restoration. Furthermore, we also explore other aspects of the restoration process, including those related to social participation and community engagement (e.g. education in restored areas), the use of fire regulation and management to reduce fire risks and increase ecosystem resilience, educational aspects and intermediate approaches as agroforestry and silviculture practices. In the last sections, we identify three major categories of specific constraints that condition ER, including environmental limitations (biotic and abiotic factors), technical/management factors and the socio-economic challenge of restoration. Finally, we briefly discuss future perspectives for ER in LACPS was funded by the Regional Council of Education, University and Professional Training (Consellería de Educación, Universidade e Formación Profesional) from the Government of Galicia (Xunta de Galicia) through the Postdoctoral Plan “Axudas de apoio á etapa de formación posdoutoral nas universidades do Sistema universitario de Galicia”, (Ref - ED481B-2019-088). GS was funded by the Fondo Nacional de Desarrollo Científico y Tecnológico (Fondecyt Regular REF-1191905), and the “Fondo Interno para la Adquisición de Equipamiento Científico de la Universidad Católica de la Santísima Concepción (FIAEC 2019). RG was funded by Fondecyt (REF - 11170516). RG, AP were funded by Grant ANID PIA/BASAL FB210006. AF was funded by CERNAS, Centro de Estudos de Recursos Naturais, Ambiente e Sociedade (FCT-UID00681-2020-2023)S

A Mathematical Model to Study the Meningococcal Meningitis

AbstractThe main goal of this work is to introduce a novel mathematical model to study the spreading of meningococcal meningitis. Specifically, it is a discrete mathematical model based on cellular automata where the population is divided in five classes: sus- ceptible, asymptomatic infected, infected with symptoms, carriers, recovered and died. It catches the individual characteristics of people in order to give a prediction of both the individual behavior, and whole evolution of population

Clinical guideline SEOM: cancer of unknown primary site

Cancer of unknown primary site is a histologically confirmed cancer which is manifested in advanced stage, with no identifiable primary site after the use of standard diagnostic procedures. Patients are initially placed into one of categories based upon the examination of the initial biopsy: adenocarcinoma, squamous cell carcinoma, neuroendocrine carcinoma and poorly differentiated carcinoma. Appropriate patient management requires an understanding of several clinicopathologic features that help to identify several subsets of patients with more responsive tumors