Plate waste increases with the number of foods proposed: An exploratory experimental study in adolescents' school canteens.

The objective of this exploratory study was to examine whether the number of foods offered has an impact on plate waste and meal satisfaction in adolescents' school canteens. The plate waste of 247 French students was estimated during two school lunches, the only variation being the number of starters offered (3 versus 6). Plate waste was assessed by the weight of food left on the tray.

Dynamic Gate Control of Aryldiazonium Chemistry on Graphene Field-Effect Transistors.

As graphene field-effect transistors (GFETs) are becoming increasingly valued for sensor applications, efficiency and control of their surface functionalization become critical. Here, we introduce an innovative method using a gate electrode to precisely modulate aryldiazonium functionalization directly on graphene devices. Although this covalent chemistry is well-known, we show that its spontaneous reaction on GFETs is highly heterogeneous with a low overall yield.

Late results after mitral valve replacement with Mosaic bioprosthesis in patients aged 65 years or younger.

Objectives: Although in younger patients indications for biological prosthesis implantation in mitral valve replacement remain controversial, recently bioprostheses use increased considerably. We present late results obtained with the Medtronic Mosaic bioprosthesis in patients aged 65 years or younger.

Methods: Between 2007 and 2017, 67 mitral Mosaic bioprostheses were implanted in patients aged 65 years or younger (58.

Graphene field-effect transistors as bioanalytical sensors: design, operation and performance.

Graphene field-effect transistors (GFETs) are emerging as bioanalytical sensors, in which their responsive electrical conductance is used to perform quantitative analyses of biologically-relevant molecules such as DNA, proteins, ions and small molecules. This review provides a detailed evaluation of reported approaches in the design, operation and performance assessment of GFET biosensors. We first dissect key design elements of these devices, along with most common approaches for their fabrication.