Essay On Silver Nanotechnology - 864 Words

Silver is known to be very efficient material since ancient times for its microbicidal properties to treat diseases, such as, ulcer, chronic wounds, sepsis, acute epididymitis, tonsillitis, and infections and to prevent the eye diseases in infants.1,2 But with the passage of time use of Ag is reduced due to development of new antibiotics.3 However, an introduction of nanotechnology, nanoparticles during the last decade have proved that this element can be used in almost every field of application due to their tremendous behavior with reduction in size (high surface to volume ratio). Silver nanoparticles have started to be used in various applications, such as, antimicrobial coatings, house hold appliances, water purifiers, cosmetics,†¦show more content†¦Silver nanoparticles show stronger antioxidant activity than synthetic commercial standards. A lot of efforts have been made by researchers to synthesis Ag nanoparticles by various methods, such as, chemical reduction,9 gamma ray radiation,10 electrochemical method,11 laser ablation,12 microwave13 and photochemical reduction.14 In recent years, the necessity of environmental safety leads to the rising interest in biological approaches. Interestingly, green synthesis has proven many advantages to synthesis AgNPs over any other approaches due to low cost, non-toxicity, repeatability, bulk production, environmental friendly, less time consuming, ease of synthesis, avoiding capping agents used in chemical synthesis etc.15 Number of biological method to synthesized metal nanoparticles are available in liter ature, such as, using microorganisms including bacteria, fungi and plants.16,17 But this process involves the tedious procedure of maintaining microbial cultures. The plant extracts give a good choice for synthesis of metal nanoparticles as they are widely dispense, easily accessible and much safer to handle, nontoxic and provides a natural capping agents. Plant extracts is also of great interest for its use in antioxidant activity as plants contain a wide variety of free radicals scavenging molecules including phenols, flavonoids, vitamins, terpenoids are rich in antioxidant activity.18 Plant extracts act reducing as well as stabilizingShow MoreRelatedMethods Of Neuroscience : Electrophysiological Techniques2484 Words   |  10 Pagesneurophysiologists to monitor the brain’s activities directly during experiments (Sutler et al., 1999). Even with its significant impact in neurology, however, its presence has been so commonplace that many people no longer realize its ubiquity . This essay explores three electrophysiological techniques namely patch clamp, sharp electrodes, and brain slice recording. It describes how each of these techniques works as well as how advances in the techniques have increased our understanding of brain structureRead MoreEssay on Fall of Asclepius95354 Words   |  382 Pagesthat he would always remember: teachers are mostly full of shit. They would give ridiculous answers to the most mundane of questions. Why did I get a sixty percent on my essay? Because thats the mark you earned. The truth is that many teachers lost their will to teach. Theyll slap any random grade on any test, quiz, essay or assignment. Thomas felt sorry for them. Its not their fault. The government doesnt spend enough on education, and the students just dont care. No one seems to care! NotRead MoreProject Mgmt296381 Words   |  1186 Pagesassigned to the project become jealous of the attention and prestige being showered on the project team, especially when they believe that it is their hard work that is financing the endeavor. The tendency to assign project teams exotic titles such as â€Å"Silver Bullets† and â€Å"Tiger Teams,† as well as give them special perks, tends to intensify the gap between the project team and the parent organization. Such appears to have been the case with Apple’s highly successful Macintosh dev elopment team. Steve Jobs