With global populations on the rise and the increasing threat associated with climate change, the need for the development of low emission energy resources is clear. Geothermal energy, which originates from the underground heat of the earth (Sankaran, 2002), has the advantage of being a low-emission, baseload energy resource. Unlike other alternative energy resources, geothermal energy production does not fluctuate with time of day or season.
In the insulated runner system, the runner diameter is oversized (say, 15~30mm) in order to maintain the molten state of the material. The large diameter runner allows an inner molten melt to pass through during the molding cycle because of the insulation effect of frozen skin shell surrounding the melt core. The insulation runner system has the advantage of extremely simple construction, low cost tooling, and high efficiency, provided the system can be left running undisturbed for long periods.
Nanoscience has emerged to become one of the most exciting areas of research
today and has attracted the imagination of a large body of students, scientists,
and engineers. The various kinds of nanomaterials that one normally deals
with are the zero-dimensional nanocrystals, one-dimensional nanowires and
nanotubes, and two-dimensional nanofilms and nanowalls. Of these, one of the
earliest research investigations pertains to nanocrystals. It is truly remarkable
that Michael Faraday made nanocrystals of gold and other metals in solution
way back in 1857.
Paleo et al. Nanoscale Research Letters 2011, 6:257 http://www.nanoscalereslett.com/content/6/1/257
Thermal, dielectrical and mechanical response of a and b-poly(vinilydene fluoride)/Co-MgO nanocomposites
Antonio José Paleo1*, Carlos Martínez-Boubeta2, Lluís Balcells3, Carlos Miguel Costa4, Vitor Sencadas5 and Senentxu Lanceros-Mendez5
Abstract Nanocomposites of the self-forming core-shell Co-MgO nanoparticles, which were of approximately 100 nm in diameter, and poly(vinylidene fluoride) (PVDF) polymer have been prepared.