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NanoEnvironment and Helth Protection,
Security.
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NanoEnvironment and Health Risks:
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Discussions, Solutions, Regulations
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Nanotechnology for environment protection
and cleaning, Filtration and purification of Water and Air,
Cleaning contaminated ground and sea, emission reduction,
environmental remediation and monitoring, green
manufacturing Catalysts Nanoporous Membranes Sensors for
Environmental Detection and Analysis Biodefence
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Protection Methods for Nano-Production sites
and workers,
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Nanotechnology Health Risks: test
laboratories
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Nanogreen chemistry
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Emission controls and reduction,
Nanocatalysts for engine emissions
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Fuel cell catalysts
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New cooling fluids and
ferrofluids
Ethical Issues of NanoSciences and
Nanotechnology.
The Ethical Committee of French CNRS (COMETS)
published 8 safety recommendations
for NanoSciences and Nanotechnology. The goals are to develop research activities
respecting the ethical norms for individual and social
protection in order to multiply the benefits from
NanoSciences. The researchers should increase their ethical
attention to possible side personal and social effects and
take precautions. The interdisciplinary and high discovery
potential of NanoSciences require to examine vigilantly the
consequences and to avoid the negligence.
CNRS, 15.10.2006
FDA and
Nanotechnology
The US Food and Drug Administration
has a problem with nanotechnology. As companies
develop drugs, medical devices, cosmetics and dietary
supplements using nanoparticles, the FDA is struggling to keep
up with the innovative revolutionary science while being
pushed in two opposing directions. Policy experts and
consumers want the agency to speed and toughen oversight
to ensure the public health is protected. The commercial
interests, from other side, concerned about regulatory delays
and the stifling of medical breakthroughs. They want FDA
to rely on existing standards and procedures to review
products with nano materials.
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Others
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Nanostructured
self-cleaning surfaces use lotus
effect .
Due in part to the micro- and nano-scale structures
of the lotus leaf and the air trapped in between, only 2-3% of
a raindrop actually contacts the leaf surface, and then rolls
off. The self-cleaning property
of the lotus leaf - and applications derived from nature's
model - requires the surface to have roughness on two scales.
When a raindrop falls on a lotus leaf, it forms a high contact
angle (greater than 90 degrees), which means that it beads up
rather than spreads out, as a liquid with a low contact angle
(less than 90 degrees) would. A lotus leaf can have a contact
angle close to 170 degrees, making it extremely hydrophobic.
In fact, as little as 2-3% of the raindrop actually contacts
the surface of a lotus leaf due to the waxy composition of the
leaf, and to the air trapped between the raindrop and the
leaf's micro- and nano-structures.
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