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11. Nanotechnology.pptx

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An Overview of Nanotechnology
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11. Nanotechnology.pptx

  1. 1. NANOTECHNOLOGY THE MANIPULATION OF MATTER KMQuinto
  2. 2. Nanotechnology is the term given to those areas of science and engineering where phenomena that take place at dimensions in the nanometre scale are utilised in the design, characterisation, production and application of materials, structures, devices and systems. WHAT IS NANOTECHNOLOGY? 2
  3. 3. SOCIETAL IMPACTS 3 The societal impacts of new technologies are easy to identify but hard to measure or predict. Nanotechnology will have significant social impacts in the areas of: • military applications • intellectual property issues • having an effect on labor • balance between citizens and governments.
  4. 4. MILITARYAPPLICATIONS 4 The main aims of military research into nanotechnology are to improve medical and casualty care for soldiers, and to produce lightweight, strong and multi- functional materials for use in clothing, both for protection and to provide enhanced connectivity.
  5. 5. INTELLECTUAL PROPERTY ISSUES 5 -focuses on the integrated approach for sustained innovation in various areas of nanotechnology. It challenges a field of scientific endeavor; combined, they present the nanotechnology field with a complex legal landscape that will require skill and collaboration to navigate. A patent examiner may state that a nanostructured product lacks novelty because the relevant nanostructure material was present in an existing product, even though the nanostructure material was not recognized.
  6. 6. 6 Identified the following impacts of nanotechnology products on labor: • employment creation/destruction • changes in sectoral distribution of the workforce • changes in the global spatial distribution of the workforce and changes in qualifications for jobs. EFFECT ON LABOR
  7. 7. 7 The nanotechnology can be expected to concentrate political power in the hands of governments. Nanotechnology can be expected to be applied to further miniaturize and advance surveillance technologies such as cameras, listening devices, tracking devices, and face and pattern recognition systems. The improvements in the field of electronics and computer memory that nanotechnology makes possible capacity of government to collect, store, and examine data. Developments in nanotechnology, can therefore, be expected to increase significantly the ability of governments to keep track of their citizens. BALANCE BETWEEN CITIZENS AND GOVERNMENTS
  8. 8. a new hazard NANOTECHNOLOGY 8
  9. 9. 9 Nanoparticles are likely to be dangerous for three main reasons: 1. Nanoparticles may damage the lungs. We know that 'ultra fine' particles from diesel machines, power plants and incinerators can cause considerable damage to human lungs. This is both because of their size (as they can get deep into the lungs) and also because they carry other chemicals including metals and hydrocarbons in with them. 2. Nanoparticles can get into the body through the skin, lungs and digestive system. This may help create 'free radicals' which can cause cell damage and damage to the DNA. There is also concern that once nanoparticles are in the bloodstream they will be able to cross the blood-brain barrier. 3. The human body has developed a tolerance to most naturally occurring elements and molecules that it has contact with. It has no natural immunity to new substances and is more likely to find them toxic. NANOTECHNOLOGY -ANEW HAZARD
  10. 10. and its benefits to the society NANOTECHNOLOGY 10
  11. 11. 11 Nanotechnology is helping to considerably improve, even revolutionize, many technology and industry sectors: information technology, homeland security, medicine, transportation, energy, food safety, and environmental science, among many others. However, a single milligram of gold nanoparticles currently costs about $80 (depending on the size of the nanoparticles). That places the price of gold nanoparticles at $80,000 per gram while a gram of pure, raw gold goes for about $50 Nanotechnology offers the potential for new and faster kinds of computers, more efficient power sources and life-saving medical treatments. BENEFITS OF NANOTECHNOLOGY
  12. 12. 12 Recent research done by scientists at the University of Bath and Bristol has used nanotechnology to develop a pacemaker that could help prevent heart failure and extend the lives of those who have suffered from cardiovascular disease. The study explains that the heart beats in correlation with the lungs, causing rhythmic patterns that allow the heart to function efficiently. That is to say, our rate of breathing directly influence to our heart rate. Cardiovascular disease throws off variations in heart rate that synchronize with lung inflations, causing a discordance that can lead to heart failure. NANOTECHNOLOGY IN THE MEDICAL INDUSTRY
  13. 13. 13 In food science, the use of nanotechnology can potentially elongate the life of fruits and vegetables. This could be achieved, for example, by putting nanoparticles of silver into foods to work as an antibacterial agent.These nanoparticles would not be a large enough component of the food to have a harmful effect or alter the flavor. In fact, many food manufacturers already use nanotechnology in food. The Food and Drug Administration doesn’t have a specific stance on nanotechnology. However, the organization has recently requested that companies using nanotechnology consult it to discuss the product. This could include a wide range of products including medical services, foodstuffs and cosmetics, though the FDA is specifically focused on the latter two. It would appear for the moment the FDA mainly wants to be considered a consultant when companies opt to use nanotechnology. Skin moisturizers, sunscreen and other cosmetics have been using nanoparticles for some time, but the FDA generally has less control over this industry. NANOTECHNOLOGY IN AGRICULTURE
  14. 14. 14 Perhaps the most intriguing aspect of nanotechnology in regard to agriculture is the potential for artificial photosynthesis to be utilized in regard to solar power. Scientists have used a device called a water splitter which allows hydrogen to be produced to create power when the sun is not directly shining. But this device relies silicon, which corrodes quickly when put in contact with electrolytes, and therefore in the past has only been able to be used in short durations.Using nanotechnology to develop solar energy could potentially increase sustainability. Scientists at the University of Stanford prevented a silicon-based water splitter from corroding by plating it with two nanometers of nickel. Plating the silicon cell with nickel has lead to promising results, but additional testing is needed to make the fueling method cost effective. NANOTECHNOLOGY IN SOCIETY
  15. 15. 15 Nanotechnology comes with some risks, specifically in regard to food, as products utilizing the technology haven’t undergone heavy testing and are not currently subject to labeling. The reason organizations such as the FDA are yet to take a strong stance on nanotechnology products is because there is yet to be any definitive evidence that nanoparticles are a safety risk. The organization wants to prudently catalog and monitor product development, but does not have any reason to inhibit usage. However, some advocacy groups attest that the lack of labeling and regulation on nanoproducts has a harmful societal impact.12 The focus of these groups, such as Friends of the Earth, is to change policy to have food products that use nanoparticles labeled. Additionally, the organization focuses on potentially toxic nanoparticles found in sunscreen and cosmetics. ETHICALAND LEGAL IMPLICATIONS
  16. 16. CLIMATE CHANGE AND ENVIRONMENTAL AWARENESS KMQuinto
  17. 17. a change in global or regional climate patterns, in particular a change apparent from the mid to late 20th century onwards and attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels. CLIMATE CHANGE 17
  18. 18. 18 I. Generating power II. Manufacturing goods III. Cutting down forests IV. Using transportation V. Producing food VI. Powering buildings VII.Consuming too much CAUSES OF CLIMATE CHANGE
  19. 19. 19 Generating electricity and heat by burning fossil fuels such as coal, oil and natural gas causes a large chunk of global emissions. Most electricity is still produced from fossil fuels; only about a quarter comes from wind, solar and other renewable sources. I. GENERATING POWER
  20. 20. 20 Manufacturing and industry produce emissions, mostly from burning fossil fuels to produce energy for making things like cement, iron, steel, electronics, plastics, clothes and other goods. Mining and other industrial processes also release gases. II. MANUFACTURING GOODS
  21. 21. 21 Cutting down forests to create farms or pastures, or for other reasons, causes emissions, since trees, when they are cut, release the carbon they have been storing. Since forests absorb carbon dioxide, destroying them also limits nature’s ability to keep emissions out of the atmosphere. III. CUTTING DOWN FORESTS
  22. 22. 22 Most cars, lorries, ships and planes run on fossil fuels. That makes transportation a major contributor of greenhouse gases, especially carbon-dioxide emissions. Road vehicles account for the largest part, but emissions from ships and planes continue to grow. IV. USING TRANSPORTATION
  23. 23. 23 Producing food requires energy to run farm equipment or fishing boats, usually with fossil fuels. Growing crops can also cause emissions, like when using fertilisers and manure. Cattle produce methane, a powerful greenhouse gas. And emissions also come from packaging and distributing food V. PRODUCING FOOD
  24. 24. 24 Globally, residential and commercial buildings consume over half of all electricity. As they continue to draw on coal, oil and natural gas for heating and cooling, they emit significant quantities of greenhouse gas emissions. VI. POWERING BUILDINGS
  25. 25. 25 Your home and use of power, how you move around, what you eat and how much you throw away all contribute to greenhouse gas emissions. So does the consumption of goods such as clothing, electronics and plastics. VII. CONSUMING TOO MUCH
  26. 26. including economic, geopolitical, biological, IMPACTS OF CLIMATE CHANGE 26
  27. 27. 27 The frequency and intensity of extreme weather all over the world can damage factories, supply chain operations and other infrastructure, and disrupt transport. Drought will make water more expensive, which will likely affect the cost of raw materials and production. ECONOMIC IMPACT OF CLIMATE CHANGE
  28. 28. 28 Climate change acts as a powerful force multiplier of geopolitical risk. Accelerated by population growth and declining water resources, climate change can drive rapid and radical structural changes in affected countries' economies and demographics. Specifically, water rights, access, management, climate change effects, and other water risks are drivers of geopolitical conflicts in areas where river basins lie across national borders. There is an increasing unreliability of fresh water supplies where many risks and factors coalesce, amplifying increasing water risk. GEOPOLITICAL IMPACT OF CLIMATE CHANGE
  29. 29. 29 Climate change can disrupt the match between organisms and their local environment, reducing survival and reproduction and causing subsequent impacts on populations or species' distributions across geographic regions. Climate change may benefit some species and cause extinction for others. BIOLOGICAL IMPACT OF CLIMATE CHANGE
  30. 30. 30 I. Research, as well as scientific and technical innovation, will be critical to saving the environment, reducing the impact of global warming, helping in adapting to climate change, cleaning up polluted areas and taking care of our own health. II. Some of the most recognized and important eco-friendly tech advancements in recent years have been in the clean energy sector. Renewable sources of energy like solar, wind and hydroelectric power have become much more widespread, as well as cheaper. III. New technologies are increasingly improving research on migration, human-wildlife conflict, relocation and re-introduction of species, and predator-prey interactions. Technology could also be applied to strategically assess biodiversity hotspots where human interference should be limited. HOW CAN WEAPPLYSTS CONCEPTS TO THE ISSUE OF CLIMATE CHANGE
  31. 31. THANK YOU Technology alone will not solve all problems in the earth, We human beings has to exert effort and respond individually to fight climate change.

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