Analysis and Simulation of the Leg of an Hexapod Robot for Remote Exploration

The locomotion system is determined by the terrain conditions. The aim of this paper is to introduce the characteristics and simulation of a hexapod legged robot that can be easily used for exploration of abrupt and harsh terrains, Jike the Rio Tinto environment. A walking robot seems like the best option for this kind of terrain. Some of the advantages are that they do not need continuous terrain, they have less problems with sliding and they also have greater capacity to overcome obstacles as they produce Jess harm to the environment that the scientist wants to explore on the contrary when faced with mechanical design they present a design challenge, also in the static and dynamic analysis problem of a legged robot, there is a high complexity that has to be taken into account. This paper shows how to easily cope with the analysis of hexapod robot movement based on a design developed by the Center of Astrobiology INTA-CSIC for operation in RioTinto (Huelva - Spain)

Characterization of the response to zinc deficiency in the cyanobacterium Anabaena sp. strain PCC 7120

Zur regulators control zinc homeostasis by repressing target genes under zinc-sufficient conditions in a wide variety of bacteria. This paper describes how part of a survey of duplicated genes led to the identification of the open reading frame all2473 as the gene encoding the Zur regulator of the cyanobacterium Anabaena sp. strain PCC 7120. All2473 binds to DNA in a zinc-dependent manner, and its DNA-binding sequence was characterized, which allowed us to determine the relative contribution of particular nucleotides to Zur binding. A zur mutant was found to be impaired in the regulation of zinc homeostasis, showing sensitivity to elevated concentrations of zinc but not other metals. In an effort to characterize the Zur regulon in Anabaena, 23 genes containing upstream putative Zur-binding sequences were identified and found to be regulated by Zur. These genes are organized in six single transcriptional units and six operons, some of them containing multiple Zur-regulated promoters. The identities of genes of the Zur regulon indicate that Anabaena adapts to conditions of zinc deficiency by replacing zinc metalloproteins with paralogues that fulfill the same function but presumably with a lower zinc demand, and with inducing putative metallochaperones and membrane transport systems likely being involved in the scavenging of extracellular zinc, including plasma membrane ABC transport systems and outer membrane TonB-dependent receptors. Among the Zur-regulated genes, the ones showing the highest induction level encode proteins of the outer membrane, suggesting a primary role for components of this cell compartment in the capture of zinc cations from the extracellular medium.Ministerio de Ciencia e Innovación y Fondo Social Europeo BFU2007-66589/BMC BFU2010-19544Junta de Andalucía y FEDER P07-CVI-0316

The disproportionate presence of schoolchildren of foreign nationality in special education in Spain: a territorial question?

Proyecto: Migraciones y construcción de la diferencia: etnografías escolares para entender la desproporcionada presencia de población extranjera en la educación especial en España (ref: PID2022-140784OB-I00), financiado por la Agencia Estatal de Investigación del Ministerio de Ciencia y Tecnología del Gobierno de EspañaEste artigo aborda a questão da representação desproporcional de estudantes que pertencem a minorias (em particular migrantes/estrangeiros) na educação especial do Estado espanhol. Apesar de ser um fenômeno amplamente estudado em diversas latitudes, na Espanha foram escassas as pesquisas neste sentido. Por meio de uma análise estatística crítica, aproximamo-nos de um fenômeno que revela diferenças significativas dependendo dos territórios em que ocorre, e as diferenças são tão significativas que nos levam a questionar se os procedimentos de diagnóstico são os que estão "patologizando" as diferenças culturais. O fenômeno é considerado relevante para sua compreensão como mais uma concretização das estratégias de construção da diferença que operam no sistema educacional. Em suma, nosso objetivo é contribuir para a compreensão multidimensional e interdisciplinar da desigualdade educacional ligada à presença da população imigrante/estrangeira, adotando a educação especial como contexto central.This article addresses the issue of the disproportionate representation of students belonging to minorities (specifically migrants/foreigners) in special education in Spain. Despite being a phenomenon widely studied in the world over, in Spain there has been little research in this regard. Through a critical statistical analysis, we approach a phenomenon that reveals significant differences according to the territories in which it occurs, and the differences are so important that they lead us to wonder if it is the diagnostic procedures that are "pathologizing" the cultural differences. The phenomenon is considered relevant for its understanding as one more concretion of the strategies for the construction of difference that operate in the educational system. In short, our objective is to contribute to the multidimensional and interdisciplinary understanding of educational inequality linked to the presence of the immigrant/foreign population, taking special education as the central context.Agencia Estatal de Investigación del Ministerio de Ciencia y Tecnología del Gobierno de España PID2022-140784OB-I0

Astrobiological field campaign to a volcanosedimentary mars analogue methane producing subsurface protected ecosystem: Imuruk Lake (Alaska)

Viking missions reported adverse conditions for life in Mars surface. High hydrogen signal obtained by Mars orbiters has increased the interest in subsurface prospection as putative protected Mars environment with life potential. Permafrost has attracted considerable interest from an astrobiological point of view due to the recently reported results from the Mars exploration rovers. Considerable studies have been developed on extreme ecosystems and permafrost in particular, to evaluate the possibility of life on Mars and to test specific automated life detection instruments for space missions. The biodiversity of permafrost located on the Bering Land Bridge National Preserve has been studied as an example of subsurface protected niche of astrobiological interest. Different conventional (enrichment and isolation) and molecular ecology techniques (cloning, fluorescence >in situ> probe hybridization, FISH) have been used for isolation and bacterial identification.The expedition to Imuruk Lake was supported by Centro de Astrobiologia-INTA (Spain). The laboratory experimental procedures were supported by Grant AYA 2010–2013 “Desarrollo de Tecnología para la identificación de vida de forma automática” from the Spanish Government.Peer Reviewe

Current ozone levels threaten gross primary production and yield of Mediterranean annual pastures and nitrogen modulates the response

Pastures are among the most important ecosystems in Europe considering their biodiversity and dis- tribution area. However, their response to increasing tropospheric ozone (O 3 ) and nitrogen (N) deposi- tion, two of the main drivers of global change, is still uncertain. A new Open-Top Chamber (OTC) experiment was performed in central Spain, aiming to study annual pasture response to O 3 and N in close to natural growing conditions. A mixture of six species of three representative families was sowed in the fi eld. Plants were exposed for 40 days to four O 3 treatments: fi ltered air, non- fi ltered air (NFA) repro- ducing ambient levels and NFA supplemented with 20 and 40 nl l � 1 O 3 . Three N treatments were considered to reach the N integrated doses of “ background ” , þ 20 or þ 40 kg N ha � 1 . Ozone signi fi cantly reduced green and total aboveground biomass (maximum reduction 25%) and increased the senescent biomass (maximum increase 40%). Accordingly, O 3 decreased community Gross Primary Production due to both a global reduction of ecosystem CO 2 exchange and an increase of ecosystem respiration. Nitrogen could partially counterbalance O 3 effects on aboveground biomass when the levels of O 3 were moderate, but at the same time O 3 exposure reduced the fertilization effect of higher N availability. Therefore, O 3 must be considered as a stress factor for annual pastures in the Mediterranean areas

Geographic information system software application developed by a regional emergency agency

This paper presents a methodology for risk analysis and assessment to manage territorial data based on Geographical Information Systems from the viewpoints of climatology, geography, disaster science, environmental science, fire safety and urban services. The results in this methodology are intended to support local and provincial government agencies to: make resource allocation decisions; make high-level planning decisions and raise public awareness of disasters risk, its causes, and ways to manage it. The Autonomous Community of Navarra, as a result of a special administrative status, possesses a number of specific features that have let it build up a high technological development in several fields. The main areas of research are healthcare and renewable energies, but also focused in the implementation of security systems at territorial level.These advances and particularities of the GIS software used by the fire fighters of this community will be the ones shown in this paper, as well as its prospective improvements in the collaboration with the experts responsible for urban planning of a School of Architecture

Astrobiological field campaign to a volcanosedimentary mars analogue methane producing subsurface protected ecosystem: Imuruk Lake (Alaska)

Viking missions reported adverse conditions for life in Mars surface. High hydrogen signal obtained by Mars orbiters has increased the interest in subsurface prospection as putative protected Mars environment with life potential. Permafrost has attracted considerable interest from an astrobiological point of view due to the recently reported results from the Mars exploration rovers. Considerable studies have been developed on extreme ecosystems and permafrost in particular, to evaluate the possibility of life on Mars and to test specific automated life detection instruments for space missions. The biodiversity of permafrost located on the Bering Land Bridge National Preserve has been studied as an example of subsurface protected niche of astrobiological interest. Different conventional (enrichment and isolation) and molecular ecology techniques (cloning, fluorescence "in situ" probe hybridization, FISH) have been used for isolation and bacterial identificationThe expedition to Imuruk Lake was supported by Centro de Astrobiología-INTA (Spain). The laboratory experimental procedures were supported by Grant AYA 2010–20213 “Desarrollo de Tecnología para la identificación de vida de forma automática” from the Spanish Governmen

Comparativa entre los resultados obtenidos mediante evaluación continua y evaluación final en materias técnicas online de posgrado. Influencia del factor tiempo y la puntuación de las actividades

[ES] La metodología empleada para la evaluación de los procesos de aprendizaje es clave para determinar la adquisición de las competencias. En docencia online, la autoevaluación y el feedback emergen como elementos indispensables que, combinados con distintas actividades de aprendizaje, trabajan en línea para conseguir que el alumnado alcance los objetivos marcados. Este trabajo analiza los resultados conseguidos por los alumnos de posgrado de la formación online Cursosagua a lo largo de cuatro cursos académicos, para determinar cuáles son los factores más influyentes y mejorar el sistema de evaluación actual.Del Teso March, R.; Estruch-Juan, E.; Gómez Sellés, E.; Soriano Olivares, J. (2021). Comparativa entre los resultados obtenidos mediante evaluación continua y evaluación final en materias técnicas online de posgrado. Influencia del factor tiempo y la puntuación de las actividades. En Proceedings INNODOCT/20. International Conference on Innovation, Documentation and Education. Editorial Universitat Politècnica de València. 469-477. https://doi.org/10.4995/INN2020.2020.11846OCS46947