1,721,001 research outputs found
Brain-to-brain paradoxical embolism through patent foramen ovale after cerebral vein thrombosis
No full textElectromagnetic interaction with a monodispersed system in sedimentation equilibrium
No full textIn this paper, a new model to explain the electromagnetic interaction with a monodispersed system in sedimentation equilibrium is presented. Our approach is based on the dispersive system as constituted by a large number of stratification each characterized a constant particle concentration. The interaction between the electromagnetic field and the stratified material is taken into consideration thanks to the T-matrix approach. The concentration of these media varies with continuity along the stratified direction. A host medium constitutes each layer, and it is also assumed to be identical for all layers in which some nano-spherical objects are immersed. Thanks to these hypotheses, the homogenization mixing formula has been taking into account. The reached results show the behavior of the stratified medium as a function of the density for the spherical hosted object and as a function of angular incident direction
Disappearance of microembolic signals after heparin in acute cerebral ischemia due to cyanotic heart disease with polyglobulia
No full textAdverse Patient Events in Anesthesia Delivery - Review and Analysis of Potentially Avoidable Events
No full textThe paper examines the MDR (Medical Device Reporting) reportable events reported to Food and Drug Administration (FDA) from medical device manufacturers and caregivers in the US market. A review of all MDRs reported between October 2014 and September 2019 is performed. The MDRs under analysis are related to adverse patient events, in particular to deaths and serious injuries. The study will provide a trend of patient safety as a result of the adverse patient events reported in the five considered years
"Supine-prone" dynamic X-ray examination: new method to evaluate low-grade lumbar spondylolisthesis.
No full textElectromagnetic scattering between an elliptically inhomogeneous plane wave and a multilayered cylinder
No full textThe interaction of a stratified cylinder with an elliptically inhomogeneous plane wave is introduced and also determined through a rigorous theoretical approach. The scattered electromagnetic field by a multilayered cylinder is investigated through an application of the generalized Vector Cylinder Harmonics (VCH) expansion. The exact mathematical model to represent this scenario considers the so-called complex-angle formalism reaching a superposition of Vectorial Cylindrical-Harmonics and the T-matrix formulation to contemplate the multi-scattering process between the cylinders. The validation of the procedure was accomplished with a comparison between the numerical results obtained with the Finite Element Method (FEM) in Comsol Multiphysics environment and a homemade Matlab code
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Study of optical tag profile of the tag recognition measurement system in cultural heritage
No full textThis study exposes the process to identify the optimum optical tag profile to be used for monitoring the minimum relative displacement of two areas of the artwork. The purpose is to realize an efficient, precise, and accurate structural monitoring system with minimal invasiveness. In particular, it is designed to determine the enlargement of a crack on a fresco inside a closed environment, such as inside a church. Theoretical studies and measurements in a controlled environment are performed to identify the best mathematical distribution to be used as tags. The two small adhesive tags are the main components of the system, they are attached on the surface of the artwork and the acquisition of their images is performed through a high-resolution camera. An advanced least-squares fitting of quadratic curves and surfaces algorithms for the objective function are used to detect the relative distance between these optical tags. The appropriate parameters for monitoring potential cracks on cultural assets are determined with a fitting algorithm of an objective function. In this study, different bi-dimensional objective functions are considered to identify the best configuration
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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