Search results for "Contrast"

(Re)constuire la temporalité d’un événement médiatique sur Twitter : une étude contrastive

2016

International audience; En examinant la temporalité d’un « événement » sur Twitter, à travers les tweets d’acteurs politiques dans quatre pays, cette étude contribue à enrichir notre compréhension du processus de médiatisation de la communication politique via les réseaux socio-numériques. A partir des traces laissées sur le réseau par ses utilisateurs, la contribution cherche à identifier un « événement » médiaté qui se manifesterait dans des discours des acteurs politiques comparés à la twittosphère. This study proposes to enrich our understanding of the mediatization of political communication via digital social networks, by examining the temporality of an “event” on Twitter, through the…

Riempimento centrifugo (“inside-out”) degli angiomi epatici all’ecografia con mezzo di contrasto

2006

Angiomi epatici atipici all’ecografia di base: caratterizzazione con ecografia ad inversione di impulso e SonoVue

2006

Riempimento centrifugo (”inside-out”) degli angiomi epatici: un possibile e atipico aspetto all’ecografia con mezzo di contrasto

2008

Ruolo dell’ecografia con mezzo di contrasto nella valutazione degli angiomi splenici

2007

RUOLO DELL’ECOGRAFIA CON MEZZO DI CONTRASTO NELLA VALUTAZIONE DEGLI ANGIOMI SPLENICI

2010

Multiproperty complexes of 4d and 4f metal ions based on biomolecules: from fundamental research to potential applications

2023

El trabajo desarrollado en esta Tesis se enmarca en el campo de la Química de Coordinación y el Magnetismo Molecular, vectores base para el desarrollo de múltiples aplicaciones en Nanomedicina y Nanotecnología. El estudio de los compuestos de coordinación tiene una larga historia que se remonta a principios del siglo XIX, con notables contribuciones de químicos como Berzelius y Jørgensen. Esta rama de la química se centra en la comprensión de las propiedades de unión de los ligandos (moléculas o aniones donadores de electrones) a los iones metálicos. Las teorías de Alfred Werner sobre la coordinación de iones metálicos a principios del siglo XX marcaron un hito importante en este campo. El …

Distinct bhaplotype structure at the innate immune receptor Toll-like receptor 2 across bank vole populations and lineages in Europe

2015

Abstract: Parasite-mediated selection may contribute to the maintenance of genetic variation at host immune genes over long time scales. To date, the best evidence for the long-term maintenance of immunogenetic variation in natural populations comes from studies on the major histocompatibility complex (MHC) genes, whereas evidence for such processes from other immune genes remains scarce. In the present study, we show that, despite pronounced population differentiation and the occurrence of numerous private alleles within populations, the innate immune gene Toll-like receptor 2 (TLR2) displays a distinct haplotype structure in 21 bank vole (Myodes glareolus) populations across Europe. Haplo…

Fluorescein- and EGFR-Antibody Conjugated Silica Nanoparticles for Enhancement of Real-time Tumor Border Definition Using Confocal Laser Endomicrosco…

2019

Intraoperative definition of tumor free resection margins in head and neck cancer is challenging. In the current proof-of-principle study we evaluated a novel silica nanoparticle-based agent for its potential use as contrast enhancer. We synthesized silica nanoparticles with an average size of 45 nm and modified these particles with the fluorescence stain fluorescein isocyanate (FITC) for particle detection and with epidermal growth factor receptor (EGFR)-targeting antibodies for enhanced tumor specificity. The nanoparticles exhibited good biocompatibility and could be detected in vitro and in vivo by confocal laser scanning microscopy. Additionally, we show in an ex vivo setting that these…

2020

To successfully learn using open Internet resources, students must be able to critically search, evaluate and select online information, and verify sources. Defined as critical online reasoning (COR), this construct is operationalized on two levels in our study: (1) the student level using the newly developed Critical Online Reasoning Assessment (CORA), and (2) the online information processing level using event log data, including gaze durations and fixations. The written responses of 32 students for one CORA task were scored by three independent raters. The resulting score was operationalized as “task performance,” whereas the gaze fixations and durations were defined as indicators of “pr…