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The Role of Modern Technology in Human’s Life
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| bet | 3/11 | | Sana | 16.05.2024 | | Hajmi | 259,81 Kb. | | #238348 |
Bog'liq ingliz tili 30 talikThe Role of Modern Technology in Human’s Life
Nanotechnologies that appeared in the last quarter of the twentieth century are developing rapidly. Almost every month there are reports of new projects that seemed a year or two ago absolute fiction. By definition, given by the pioneer of this area, Eric Drexler, nanotechnology is "the expected production technology focused on the cheap receipt of devices and substances with a predetermined atomic structure." This means that it operates with individual atoms in order to obtain structures with atomic accuracy. This is the fundamental difference between nanotechnologies and modern "bulk" technologies that manipulate macro objects. In the nanoscale range, almost any material exhibits unique properties. For example, it is known that silver ions have antiseptic activity. A solution of silver nanoparticles has a significantly higher activity. If you treat the solution with a bandage and apply it to a purulent wound, the inflammation will pass and the wound will heal faster than with conventional antiseptics. The domestic concern Nanoindustry has developed a technology for the production of silver nanoparticles that are stable in solutions and in an adsorbed state. The resulting preparations have a wide spectrum of antimicrobial activity. Thus, it became possible to create a whole gamut of products with antimicrobial properties with a slight change in the technological process by manufacturers of existing products. Silver nanoparticles can be used to modify traditional and create new materials, coatings, disinfectants and detergents (including toothpaste and cleaning pastes, washing powders, soaps), cosmetics. Coatings and materials (composite, textile, paint and varnish, carbon and others) modified with silver nanoparticles can be used as prophylactic antimicrobial protective agents in places where the risk of spread of infections increases: in transport, in public catering facilities, in agricultural and livestock buildings , in children's, sports, medical institutions. Silver nanoparticles can be used to purify water and destroy pathogens in filters of air conditioning systems, in pools, showers and other similar places of mass visits
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