Nanoengineering: Global Approaches to Health and Safety by Patricia I. Dolez

By Patricia I. Dolez

Nanoengineering: worldwide methods to future health and questions of safety provides a world imaginative and prescient at the effect of engineered nanomaterials either for the consumer/general public and in occupational settings. The ebook additionally offers a touch on what may be anticipated for the longer term from nanomaterials and their results on our lives, either at domestic and at paintings. moreover, clients will locate useful info on nanomaterials irreplaceable worth and their hazards for future health, safeguard, and environmental concerns. Case reports illustrate key issues and supply info on vital techniques.

  • Provides an international imaginative and prescient at the varied elements with regards to nanosafety and a synthesis of the data available
  • Gives all of the details required for precision decision-making in one booklet, providing either basic public and occupational aspects
  • Contains separate chapters on every one topic written by means of world-renowned participants
  • Presents an entire imaginative and prescient of the matter, with views on international approaches
  • Includes case reports that illustrate very important processes

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Additional info for Nanoengineering: Global Approaches to Health and Safety Issues

Example text

Selective permeability can be provided, for example, by grafting the nanoporous matrix with the appropriate chemical groups. In addition, destructive adsorption of warfare agents has been obtained with various nanoscale metal oxides, giving selfdecontamination capabilities to treated surfaces. Currently, nanosilver is used in socks and undergarments to make them remain bacteria and odor-freed for days for war situations [143]. Military vehicles can also benefit from nanotechnologies. In addition to the ballistic protection and stealth already discussed, improved energy distribution based on nanoelectronics will allow all-electric warships requiring reduced crews while Nano Air Vehicles will bring a new meaning to indoor and outdoor battlefield surveillance [142].

Experimentation on inhalation exposures to NPs has thus far been the most studied route of exposure. As an example of some of the screening methods that have recently been developed, [3a] reported on a short-term inhalation toxicity assay to assess and rank the hazards of 13 different metal oxide nanomaterial-types. Accordingly, rats were exposed to aerosols of test materials ranging from concentrations of Figure 1 Scanning electron micrograph of a rat lung section. Inhaled particles and nanoparticles travel through the airways and deposit preferentially on alveolar duct (AD) bifurcations (arrow) which intersect the junction between terminal bronchiole (TB) and ADs.

Finally, energy use can benefit from nanotechnology-based lightweight, tribological and heat and light-control materials, for example. Tribology is a major component of engineering that can gain from nanotechnology. Indeed, at the nanoscale, the continuum contact theory cannot be applied anymore to the solid contact. Sliding shifts from a perfectly linear motion to a cyclic approach and separation process between individual atoms of opposing surfaces [126]. In addition, because of the very small range of interatomic forces, all surfaces appear as functionally rough as any protuberance will bring the two surfaces out of their fuzzy zone.

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