We present how to make and assemble micro-patterned stickers (microPS) to construct high performance plastic microfluidic devices in a few minutes. We take advantage of soft UV imprint techniques to tailor the geometry, the mechanical properties, and the surface chemistry of 2D and 3D microfluidic circuits. The resulting microfluidic stickers substantially overcome the actual performance of the...

Identification and characterisation of microplastic (MP) is a necessary step to evaluate their concentrations, chemical composition and interactions with biota. MP ≥10μm diameter filtered from below the sea surface in the European and subtropical North Atlantic were simultaneously identified by visual microscopy and Raman micro-spectroscopy. Visually identified particles below 100μm had a signi...

Quantitative autoradiography can measure distribution patterns in an animal exposed to radiolabeled compounds. A comparison of autoradiographs of rat brain containing low levels of 14C showed that a highly variable background signal had been produced. This resulted in several overexposed autoradiographs which could not be quantitatively compared. The background, believed to be produced by light...

The performances of new polymeric materials with excellent optical properties and good machinability, have led the biomedical diagnostics industry to develop cheap disposable biosensor platforms, appropriate for point of care applications. Zeonor, a type of cycloolefin polymers (COP) is one such polymer that presents an excellent platform for biosensor chips. These polymer substrates have to be...

Extracellular matrices (ECM) isolated from chick embryo fibroblast and human and rabbit corneal stromal cells induce polarization and elongation of corneal endothelial cells in culture. ECM isolated from rabbit corneal or bovine aortic endothelial cells neither polarize nor elongate corneal endothelial cells in culture. By indirect immunofluorescence, fibronectin is seen as arrays of long fiber...

This report presents an assessment of VOC emissions from fiberglass boat manufacturing. First, a description of the industry structure is presented. This includes estimates of the number of facilities, their size, and geographic distribution. The fiberglass boat manufacturing process is then described along with the sources and types of VOC emissions. Model plants representative of typical faci...

In stress analysis applications emphasis is placed on careful determination of the stresses for the improvement of design. In nondestructive testing importance is placed on reliability and quality, and as a result of this, observation of surface strains is of interest. Earlier photoelastic studies by El-Ebrashi et al 1-7 concerned, for the most part, two dimensional photoelasticity. In two dime...

Wetting of real engineering surfaces occurs in many industrial applications (liquid coating, lubrication, printing, painting...). Forced and natural wetting can be beneficial in many cases, providing lubrication and therefore reducing friction and wear. However the wettability of surfaces can be strongly affected by surface roughness. This influence can be very significant for static and dynami...

A nually pproximately 12 million metric tons of plastic resins are processed anin the U.S. by more than 7000 plastics processing plants. Many types of resins, chemicals, and additives are combined to produde finished products through a variety of process operations such as adhesives production, coating, extrusion, film and sheet production, foam generation, lamination, and molding. Hughes et al...

The development of antioxidant-active packaging has numerous advantages, such as the reduction of synthetic additives in food, the reduction of plastic waste and food protection against oxidation reactions. Different concentrations of extracts of the plants Caesalpinia decapetala (CD) and Caesalpinia spinosa "Tara" (CS) were incorporated into gelatine films as natural antioxidants. The physical...