3,230 research outputs found
Nanotechnology in the context of organic food processing
Nanotechnology, the science of the ultra small, is up-and-coming as the technological
platform for the next wave of development and transformation of agri-food systems. It
is quickly moving from the laboratory onto supermarket shelves and our kitchen tables
(Scrinis and Lyons, 2007). Therefore we investigated in a literature review and a
comparison of the findings with the EU regulation of organic farming to what degree
nanotechnology can be applied in organic food production. The regulations do not
restrict the use of nanotechnology in general. Because little is known about the impact
on environment and human health, precaution should be taken when it comes to
applying this technology in organic food production
Lane-formation vs. cluster-formation in two dimensional square-shoulder systems: A genetic algorithm approach
Introducing genetic algorithms as a reliable and efficient tool to find
ordered equilibrium structures, we predict minimum energy configurations of the
square shoulder system for different values of corona width . Varying
systematically the pressure for different values of we obtain
complete sequences of minimum energy configurations which provide a deeper
understanding of the system's strategies to arrange particles in an
energetically optimized fashion, leading to the competing self-assembly
scenarios of cluster-formation vs. lane-formation.Comment: 5 pages, 6 figure
Determining the effectiveness of the Clean Air Act and Amendments on the recovery of surface waters in the northeastern US, 2010
Determining the Effectiveness of the Clean Air Act and Amendments for the Recovery of Surface Waters in the Northeastern U.S.
Zero temperature phase diagram of the square-shoulder system
Particles that interact via a square-shoulder potential, consisting of an
impenetrable hard core with an adjacent, repulsive, step-like corona, are able
to self-organize in a surprisingly rich variety of rather unconventional
ordered structures. Using optimization strategies that are based on ideas of
genetic algorithms we encounter, as we systematically increase the pressure,
the following archetypes of aggregates: low-symmetry cluster and columnar
phases, followed by lamellar particle arrangements, until at high pressure
values compact, high-symmetry lattices emerge. These structures are
characterized in the NPT ensemble as configurations of minimum Gibbs free
energy. Based on simple considerations, i.e., basically minimizing the number
of overlapping coronae while maximizing at the same time the density, the
sequence of emerging structures can easily be understood.Comment: Submitted to J. Chem. Phy
QACCP
Quality analysis of critical control points within the whole food chain and their impact on food quality, safety and health
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