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Nanotechnology (sometimes shortened to " nanotech ") is the manipulation of matter on an atomic and molecular scale. The earliest, widespread description of nanotechnology [ 1 ] [ 2 ] referred to the particular technological goal of precisely manipulating atoms and molecules for fabrication of macroscale products, also now referred to as molecular nanotechnology . A more generalized description of nanotechnology was subsequently established by the National Nanotechnology Initiative , which defines nanotechnology as the manipulation of matter with at least one dimension sized from 1 to 100 nanometers . This definition reflects the fact that quantum mechanical effects are important at this quantum-realm scale, and so the definition shifted from a particular technological goal to a research category inclusive of all types of research and technologies that deal with the special properties of matter that occur below the given size threshold.
"Nanotechnology will speed up progress. There is nothing to fear if we act responsibly" Last May Barcelona hosted the First International GENNESYS Congress on Nanotechnology and Research Infrastructures, the first international event in this field, organised by the UAB Research Park, the Materials Science Institute of Barcelona and the german synchrotron DESY. Among the numerous scientists and experts who participated in this congress was Massimo Aldarelli, Managing Director of the European XFEL project, an X-ray Free Electron Laser that will enable us to acquire a much deeper understanding of matter.
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DuPont and Environmental Defense (ED) will hold two interactive workshops on nano risk management . The workshops are intended to give participants the tools they need to: Understand (and explain to others) why nano-specific risk management is necessary; Assemble and leverage the internal and external resources to implement nano-specific risk management; and Begin implementing nano-specific risk management in an efficient and effective manner. The workshops will include: Interactive discussions of how to implement nano-specific risk management; Case studies of nano-specific risk management in use by companies and governments; and Sources of additional help for companies adopting these approaches. The first workshop will be held April 2, 2008 , at the Sustainable Packaging Coalition in San Francisco, California.
Home > Press > Nanotechnology Impacts Food and Food Processing Abstract: Milk that tastes just like cola is not on sale yet. But this and other nano-food products, such as drinks that turn pink or yellow when microwaved, are in development and others already have reached the market and may be on your shelves. Madison, WI | Posted on January 12th, 2008
Oberdörster G, Oberdörster E, Oberdörster J: 2005, 823-839. PubMed Abstract | PubMed Central Full Text
Conifers provide major plantation forest tree species, covering around 40 million hectares world wide. Wood from plantations is used for the production of paper, cardboard, structural timber, and furniture. Intensive conventional breeding programs have produced significant genetic gain in some species, and genotypes with improved growth and form characteristics, resistance to pathogens, and those lending themselves to improved forest management have been produced. Biotechnology tools, such as gene expression analysis, genetic fingerprinting, marker assisted selection, and genetic engineering, contribute to a better understanding of the genetic basis for important commercial traits, and furthermore, these techniques provide the potential to introduce significant genetic gain. This in turn will ensure commercial viability and environmental sustainability of plantation forestry.
Contexte - Les nanotechnologies désignent les technologies qui exploitent les propriétés uniques de minuscules particules dont la taille est de l’ordre du nanomètre (millionième de millimètre). Les nanotechnologies représentent un marché en rapide expansion ; on les utilise déjà dans une variété de technologies et de produits de consommation. (Cliquer ici pour obtenir une liste de tels produits) Cependant, les matériaux contenant des nanoparticules peuvent être préoccupants pour la santé humaine et l’environnement, et il convient d’évaluer les risques induits par ces matériaux récemment développés. Les méthodologies qui existent pour évaluer ces risques sont-elles appropriées ? Une évaluation du Comité scientifique des risques sanitaires émergents et nouveaux (CSRSEN/SCENIHR) de la Commission européenne
A new nanotechnology additive on the market is designed to add strength to polylactic acid (PLA) without diminishing clarity, its manufacturer claims. Rohm and Haas said its new additive, Paraloid BPM-500, broadens the usability of PLA, a bioplastic used in some "green" packaging. Over the past five years packaging suppliers have been introducing various forms of biodegradable materials in response to projections that consumers and recycling regulations will drive demand for environmentally-friendly packaging. Mandates from giant supermarkets forcing suppliers to make the switch are also coming into effect. PLA, a biodegradable plastic resin made from corn, is manufactured by Cargill subsidiary NatureWorks in the US. Rohm and Haas claims that the packaging industry's move toward PLA resin has been hampered by unmodified PLA being somewhat weaker and more brittle than traditional materials.
14 November 2007 The growing use of nanotechnology in food applications poses new challenges for both science and regulation in Europe’s food and nutrition market, an industry expert has said. EAS-Italy nutritional product regulatory affairs manager Stefanie Geiser said that as the nanotechnology market continues to grow regulators and scientists are actively working to find regulatory and risk assessment models to embrace its research and safety aspects. The first nano-food contact material (a silicon dioxide coating) has already been approved by the European Food Safety Authority (EFSA) this year, and a second, titanium nitride, is under review.
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