Dispositif d'étanchéité par géomembrane en polypropylène dans un centre d'enfouissement technique

As part of the expansion of the waste landfill located in Saint-Fraimbault (Mayenne), a research and development programme on the use of polypropylene geomembrane for geomembrane lining systems to be installed in these sites has been set up. The research and development programme, being carried out within the framework of the expansion of the Saint-Fraimbault landfill aims to analyse polypropylene geomembrane performances as part of the active barrier system and to define design and/or installation criteria.Dans le cadre de l'extension du centre d'enfouissement technique (CET) de Saint-Fraimbault (Mayenne), un projet de recherche-développement relatif à l'utilisation de géomembrane en polypropylène pour les dispositifs d'étanchéité par géomembrane dans les CET a été mis en œuvre. L'objectif de ce projet est d'analyser les performances d'une telle géomembrane dans le dispositif de sécurité active d'un CET et de définir des critères de dimensionnement et/ou de mise en œuvre

Vertically Integrated Si and SiGe Nanowires for the Realization of 3D Field-effect Transistors

International audienc

Vertically Integrated Si and SiGe Nanowires for the Realization of 3D Field-effect Transistors

International audienc

Electrical characterisation of horizontal and vertical gate-all-around Si/SiGe nanowires field effect transistors

This paper report the technological routes used to build horizontal and vertical gate all-around (GAA) Field-Effect Transistors (FETs) using both Si and SiGe NanoWires (NWs). Horizontal Si and SiGe nanowires FETs are characterized in back gate configuration. Vertical devices using Si nanowires (NWs) show good characteristics with an ION/IOFF ratio close to 106 and sub-threshold slope around 145 mV/decade. Finally, vertical SiGe devices also obtained with the same technological process present an ION/IOFF ratio from 103 to 104 but also poor dynamics which can be explained by the high interface traps density

PiezoNEMS for Sensing and Energy Harvesting

International audienc

Growth of SiGe NW Using Gold and Alternative Metal Catalysts

International audienc

Controlled Folding of Graphene: GraFold Printing

Hallam T, Shakouri A, Poliani E, et al. Controlled Folding of Graphene: GraFold Printing. Nano Letters. 2015;15(2):857-863

Une nouvelle méthode AFM pour caractériser les propriétés piézoélectriques de nanostructures : Application pour la récupération d'énergie à partir de nanofils

National audienc

Growth of SiGe NW Using Gold and Alternative Metal Catalysts

International audienc

Hypnosis-Assisted Awake Craniotomy for Eloquent Brain Tumors: Advantages and Pitfalls.

Awake craniotomy (AC) is recommended for the resection of tumors in eloquent areas. It is traditionally performed under monitored anesthesia care (MAC), which relies on hypnotics and opioids. Hypnosis-assisted AC (HAAC) is an emerging technique that aims to provide psychological support while reducing the need for pharmacological sedation and analgesia. We aimed to compare the characteristics and outcomes of patients who underwent AC under HAAC or MAC. We retrospectively analyzed the clinical, anesthetic, surgical, and neuropsychological data of patients who underwent awake surgical resection of eloquent brain tumors under HAAC or MAC. We used Mann-Whitney U tests, Wilcoxon signed-rank tests, and repeated-measures analyses of variance to identify statistically significant differences at the 0.05 level. A total of 22 patients were analyzed, 14 in the HAAC group and 8 in the MAC group. Demographic, radiological, and surgical characteristics as well as postoperative outcomes were similar. Patients in the HAAC group received less remifentanil (p = 0.047) and propofol (p = 0.002), but more dexmedetomidine (p = 0.025). None of them received ketamine as a rescue analgesic. Although patients in the HAAC group experienced higher levels of perioperative pain (p < 0.05), they reported decreasing stress levels (p = 0.04) and greater levels of satisfaction (p = 0.02). HAAC is a safe alternative to MAC as it reduces perioperative stress and increases overall satisfaction. Further research is necessary to assess whether hypnosis is clinically beneficial