L'anatomia endodontica dei secondi molari superiori: ricerca ex vivo

Aim: of the present study was to deter- mine anatomic complexities which can be seen in maxillary second molars, with a specific attention to the presence of MB2 (second mesio-buccal) canals. Methodology: 50 maxillary second molars, which had been extracted for periodontal reasons, were selected for the study, following strict exclusion cri- teria. After determining the different roots, only the mesio-buccal one was examined. Location and number of canals were determined (i) after a normal access cavity, (ii) after a wider removal of dentine from the chamber floor, and (iii) after sectioning the root 4 mm be- low the cementum-enamel junction. Data were collected and analyzed. Results: MB2 canals were present in 44% of the examined teeth (20% of ca- ses showed Weine 2 configuration, while the remaining 24% showed Weine 3 configuration). It was possible to estabilish patency in MB2 canals only in 28% of cases. Conclusions: MB2 canals are often present in maxillary second molars, being individuated in nearly half cases. This possibility and the presence of an indipendent apex make the research of MB2 canals mandatory during the endodontic treatment

Guidelines for the monitoring of Lucanus cervus

Lucanus cervus is one of the most charismatic saproxylic beetles, widely distributed in Europe. The species is typical of mature deciduous forests, especially oak woodlands. Loss and fragmentation of suitable habitats is one of the major threats for this species which is included in Annex II of the Habitats Directive. Despite several studies carried out in the last years for the monitoring methods of the species, an analytical comparison between them is still lacking. The aims of this paper are (i) to review the current knowledge about systematics, ecology and conservation practices on L. cervus and (ii) to present the research carried out during the Life MIPP project, in order to define a standard monitoring method with a suitable protocol to be used for addressing the obligations of the Habitats Directive. Overall, five methods were tested during three years in two different study areas. Based on these results, a suitable standard method for L. cervus is proposed in this paper and, in order to assess the conservation status of populations and to compare them over time, a simple method for the calculation of a reference value is provided

Visual rehabilitation with a vision-trainer instrument for patients with severe acquired brain injury (sABI): Two case reports

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Business Benefits Associated With Improving Fatigue Regulations for Cargo Pilots

The central idea of this research is to assess business-related factors in the Pilots ́ Fatigue Regulations and evaluate if a more flexible regulation would improve productivity of airline cargo pilots in Brazil. The results of the study have indicated that Brazilian Civil Aviation Authority (ANAC) can create a regulatory environment that may lead up to 34,28% of improved productivity of pilots ́ availability in cargo operations, which may contribute for gains up to USD $3.6 million for an airline with cargo 70 pilots flying 16.500 hours per year. Aviation fatigue regulations are an extremely important subject in the aviation industry as they are a part of an evolution of operational processes within the Safety Management System (SMS). However, some restrictions in regulation may produce some business-related inefficiencies in terms of additional costs or revenue loss to airline companies. The research conducted revised the bibliography available with regards this subject of pilots ́ fatigue regulation in the USA and Brazil. The Group also compared important business-related indicators related to cargo pilots ́ operations in Brazil and calculated potential gains of a hypothetical scenario with an adjusted pilot ́s schedule in line with FAA CFR 177. At last, the research included evaluation of The National Transportation Safety Board (NTSB) records of events of cargo operations in the USA to compare if safety is impacted by fatigue in an environment of an optimized schedule of cargo pilot. A crucial finding of this research is that the proposed changes shall not impact current safety levels caused by fatigue of pilots

Problemática ecológico-política de la ciudad de Ushuaia en el período 1991-2011: un análisis de las relaciones de poder en perspectiva a la viabilidad comunal

Ushuaia, ciudad fundada por el comodoro Augusto Lasserre el 12 de octubre de 1884, es una orbe cuya vida social, política y económica fue desde sus comienzos y es en la actualidad fuertemente impactada por la intervención activa del Estado nacional. Situada en la margen sur de la isla Grande de Tierra del Fuego, a más de 3 mil kilómetros de la capital argentina, y poseedora de un clima hostil y una topografía que no favorece la instalación de asentamientos humanos, la capital fueguina debe su existencia y su volumen poblacional fundamentalmente a la disputa de nuestro país con la República de Chile por la soberanía sobre la región. El origen eminentemente político de la ciudad, la forma en que se implementaron las políticas de fomento de la población y la motivación de los migrantes para radicarse en la región conformaron una sociedad ushuaiense cuya dinámica social, política, cultural y económica gestó una situación ecológico-política preocupante, que aleja a Ushuaia del horizonte de la viabilidad comunal. En el presente trabajo se da cuenta tanto de la situación ecológico-política generada, acotando el período de estudio al lapso de tiempo comprendido entre los años 1991-2011, como de las relaciones de poder político subyacentes a la gestación de dicha situación; habiéndose realizado el estudio desde la perspectiva de la ecología política, y considerando en el mismo la complejidad intrínseca a los hechos sociales, los que fueron analizados en forma holística y multimodal con vistas a brindar elementos útiles para la concepción de políticas públicas orientadas a preservar la viabilidad comunalUshuaia, founded by Commodore Augusto Lasserre on October 12th, 1884, is a city whose social, political and economic life has, from its beginnings to this day, been strongly affected by the active intervention of the national State. Located on the south bank of the Isla Grande de Tierra del Fuego over three thousand kilometres away from the capital of Argentina and having a hostile climate and a topography which do not favour the establishment of human settlements, the capital of Tierra del Fuego owes its existence and population density mainly to the dispute between our country and the Republic of Chile about the sovereignty over the region. The eminently political origin of the city, the way in which settlement policies are implemented and the immigrants' motivation for settling in the region have shaped an Ushuanian society whose social, political, cultural and economic dynamics has bred a worrying ecological-political situation which keeps Ushuaia away from the horizon of urban feasibility. This paper recounts both the ecological-political situation generated and the political power relationships underlying the gestation of said situation (the period under study has been limited to the time elapsed between the years 1991 and 2011). This study has been performed from the ecological-political perspective and has considered the inherent complexity of social events, which were analysed on the basis of a holistic and multi-modal approach with a view to providing useful elements for the conception of public policies aiming at preserving urban feasibilityFil: Chiari, Mario E. Universidad Nacional de Tierra del Fuego; Argentina