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Concept

Masque de protection

Publications associées (9)

Reanalysis of mtDNA mutations of human primordial germ cells (PGCs) reveals NUMT contamination and suggests that selection in PGCs may be positive

Konstantin Popadin

The resilience of the mitochondrial genome (mtDNA) to a high mutational pressure depends, in part, on negative purifying selection in the germline. A paradigm in the field has been that such selection, at least in part, takes place in primordial germ cells ...

Elsevier Sci Ltd2023

Role of Minimum Adhesive Wear Particle Size in Third-Body Layer Properties

Jean-François Molinari, Son-Jonathan Pham-Ba

We employ a novel discrete element method (DEM) force formulation to simulate adhesive wear and assess the effects of material and loading parameters on the properties of the third-body layer (TBL) formed during sliding motion. The study emphasizes the rol ...

2023

Modified full-face snorkel masks as reusable personal protective equipment for hospital personnel

Mélanie Thérèse Marie Hannebelle, Patrick Gerber

Here we adapt and evaluate a full-face snorkel mask for use as personal protective equipment (PPE) for health care workers, who lack appropriate alternatives during the COVID-19 crisis in the spring of 2020. The design (referred to as Pneumask) consists of ...

2021

Reusability of filtering facepiece respirators after decontamination through drying and germicidal UV irradiation

Véronique Michaud, Guillaume Suarez, David Vernez

Introduction During pandemics, such as the SARS-CoV-2, filtering facepiece respirators plays an essential role in protecting healthcare personnel. The recycling of respirators is possible in case of critical shortage, but it raises the question of the effe ...

2020

Photocatalytic Nanowires-Based Air Filter: Towards Reusable Protective Masks

László Forró, Andrzej Sienkiewicz, Endre Horvath, Lidia Rocoffort de Vinnière, Caroline Lehmann

In the last couple decades, several viral outbreaks resulting in epidemics and pandemics with thousands of human causalities have been witnessed. The current Covid-19 outbreak represents an unprecedented crisis. In stopping the virus' spread, it is fundame ...

WILEY-V C H VERLAG GMBH2020

Research and developments-where people are exposed to nanomaterials

Thierry Meyer

Objectives: Many nanomaterials (materials with structures smaller than 100 nm) have chemical, physical and bioactive characteristics of interest for novel applications. Considerable research efforts have been launched in this field. This study aimed to stu ...

2015

Planar micro-direct methanol fuel cell prototyped by rapid powder blasting

Martinus Adela Maria Gijs, Meng Shen

We present a planar micro-direct methanol fuel cell (μ−DMFC) fabricated by rapid prototyping powder blasting technology. Using an elastomeric mask, we pattern two parallel microfluidic channels in glass. The anode and cathode of the fuel cell are formed by ...

Elsevier2011

Fabrication of microfluidic mixers with varying topography in glass using the powder blasting process

Martinus Adela Maria Gijs, Virendra Kumar Parashar, Abdeljalil Sayah

The powder-blasting method is used to fabricate structures with a three-dimensional topography in glass using elastomeric masks. The relation between the mask opening width and the erosion depth is exploited to fabricate microstructures with varying depth ...

2009

What is the strength of a mask in visual metacontrast masking?

Michael Herzog, Gregory Francis

After more than a century of research, the mechanisms underlying visual masking are still hotly debated. One key characteristic of masking is that variations in the stimulus onset asynchrony (SOA) between the target and the mask can lead to either monotoni ...

Association for Research in Vision and Ophthalmology (ARVO)2007