ETUDE ANATOMIQUE ET ENSEIGNEMENT PRATIQUE DU PLEXUS BRACHIAL EN RELATIONAVEC L'IMAGERIE TOMOGRAPHIQUE

L'importance fonctionnelle et la complexité du plexus brachial en font un sujet important de l'enseigne- ment anatomique. La connaissance approfondie de sa morphologie est en effet incontournable dans plusieurs spécialités médicales, dont l'anesthésiolo- gie, la radiologie et plusieurs domaines chirurgicaux. En outre, la clinique associée aux lésions neurolo- giques du membre supérieur est essentielle à tout praticien amené à en évaluer la fonction, du médecin généraliste au neurologue. Le présent travail a pour but d'offrir aux étudiants de première année de médecine un complément pour l'étude de l'anatomie du plexus brachial. Ils auront accès, lors des travaux pratiques, à une pièce anato- mique disséquée dans le cadre de ce projet. Un support d'apprentissage écrit sera mis à leur disposi- tionsuruneplateformemoodledédiéeàl'anatomie;y seront aussi intégrés des photos légendées du plexus, des reconstitutions artérielles acquises par CT-scan- ner, et, à terme, des exercices interactifs dérivés de ce travail. Un second volet d'approfondissement sur les pathologies du plexus brachial sera développé à l'attention des étudiants plus avancés

Trends in Human-wildlife Interactions as Related to Land Use and Human Density in Massachusetts

We conducted a study of human-wildlife interactions in Massachusetts, USA between April 2010 and May 2012. Our objectives were to (1) compile and summarize public-generated reports on human-wildlife interactions across Massachusetts; (2) evaluate reports based on species, public concerns, and seasonal distribution; and (3) evaluate public perceptions of human-wildlife interactions. We collected unsolicited reports of human-wildlife interaction submitted to the Massachusetts Division of Fisheries and Wildlife (MDFW) through phone calls, emails, and face-to-face communications from the public. We received 2,730 reports from 332 of 351 towns in Massachusetts regarding 76 different wildlife species ranging from moose (Alces alces) to honey bees (Apis mellifera). Coyotes (Canis latrans) (328, 12%), bears (Ursus americanus) (307, 11%), and foxes (Vulpes vulpes and Urocyon cinereoargenteus) (284, 10%) were the most common species reported. Property disturbance/damage was the most common report type (934, 35%), concern for the welfare of wildlife was the most common concern type (539, 24%), and the most common report and concern pairing (referred to as perception type) was reports of young/injured wildlife with a concern for the welfare of wildlife (279, 13%). We tested for differences in reporting rates of human-wildlife interactions among seasons (spring, summer, fall, and winter) and among 5 urban-suburban development categories (low, medium-low, medium, medium-high, high). The distribution of total animal report records were greater than expected for spring and for summer and less than expected for fall and for winter. The distribution of total animal report records were less than expected for low and medium-low development categories, and greater than expected for medium, medium-high, and high development categories. We then conducted multiple regression analyses to examine how total reports of human-wildlife interactions, as well as reports of human and species-specific interactions (coyotes, foxes, bears, fishers (Martes pennanti), and birds of prey) related to median home value and landscape composition and configuration. Total reports and reports of coyote, fox, and fisher were correlated with our model

Theoretical investigation of moir\'e patterns in quantum images

Moir\'e patterns are produced when two periodic structures with different spatial frequencies are superposed. The transmission of the resulting structure gives rise to spatial beatings which are called moir\'e fringes. In classical optics, the interest in moir\'e fringes comes from the fact that the spatial beating given by the frequency difference gives information about details(high spatial frequency) of a given spatial structure. We show that moir\'e fringes can also arise in the spatial distribution of the coincidence count rate of twin photons from the parametric down-conversion, when spatial structures with different frequencies are placed in the path of each one of the twin beams. In other words,we demonstrate how moir\'e fringes can arise from quantum images

Experimental evidence of laser power oscillations induced by the relative Fresnel (Goos-Haenchen) phase

The amplification of the relative Fresnel (Goos-Haenchen) phase by an appropriate number of total internal reflections and the choice of favorable incidence angles allow to observe full oscillations in the power of a DPSS laser transmitted through sequential BK7 blocks. The experimental results confirm the theoretical predictions. The optical apparatus used in this letter can be seen as a new type of two-phase ellipsometric system where the phase of the complex refractive index is replaced by the relative Fresnel (Goos-Haenchen) phase.Comment: 7 pages, 3 figures, 1 tabl

Poem for Eavan Boland

“Poema para Eavan Boland” / “Poem for Eavan Boland”, de  José Huguenin. Tradução para o inglês por Rafael Teles da Silva. Escrito para “Eavan Boland — In Her Many Images”, ABEI Journal 23.2 (2021).“Poema para Eavan Boland” / “Poem for Eavan Boland” by  José Huguenin. English translation by Rafael Teles da Silva. Written for “Eavan Boland — In Her Many Images”, ABEI Journal 23.2 (2021)