Friday

Fhaken, Raul Figueroa - Fotosintesis (Original Mix)



you know, we need to start replanting the forests so that we can help boost the Earths natural systems for cleansing itself, like how plants use, "Fotosintesis", (photosynthesis, the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct), not choking the environment with harmful nano filaments, Nanotechnology has gained a great deal of public interest due to the needs and applications of nano-materials in many areas of human endeavors including industry, agriculture, business, medicine and public health. Environmental exposure to nano-materials is inevitable as nano-materials become part of our daily life, and as a result, nano-toxicity research is gaining attention. This review presents a summary of recent research efforts on fate, behavior and toxicity of different classes of nano-materials in the environment. A critical evaluation of challenges and future needs for the safe environmental nanotechnology has been discussed. Many scientists consider nanotechnology as the next logical step in science, integrating engineering with biology, chemistry, medicine, and physics. When the dimensions of a material become very small, its physical and chemical properties can become very different from those of the same material in bulk form. Current nanotechnology is building devices of microscopic or even molecular size, which will potentially be benefiting medicine, environmental protection, energy, and space exploration. With our ever increasing knowledge of nano-science and the ability to engineer new products and services, it would not be far before the entire history can be compressed inside our pockets or the system extended by specially designed molecules that mimic the living systems. In the last couple of years, the term “Nanotechnology” has been inflated and has almost become synonymous for things that are innovative and highly promising. Nanotechnology enables us to create functional materials, devices, and systems by controlling matters at the atomic and molecular scales, and to exploit novel properties and phenomena. Substantially smaller size, lower weight, more modest power requirements, greater sensitivity, and better specificity are just a few of the improvements we will see in sensor design. The fabrication of smaller and faster transistors has long been a driving force for the computer industry. As transistor sizes decrease to nano meter regime, we are approaching the point where nano-lithography will achieve the required resolution for creating these nano meter-sized devices. An obvious route when thinking about the very small is to shrink the size and cost of computers, and speed their operation phenomenally. Today's technology relies on etching patterns on silicon so that tiny electronic switches can be turned on and off, the basis for the binary code that represents everything the computer understands. Tomorrow's nano-computers will have molecular switches, or logic rods, to place today's nano-material-based microbes injected into an organism to combat disease-causing bacteria and viruses, remove cancerous cells or dispense medicines. Microscopic robots may repair, or even assemble complex devices or remove harmful substances from the environment. There is no doubt that nano-science and nanotechnology is one of the fastest growing research and technology areas. Nanotechnology has gained a great deal of public interest due to the needs and applications of nano-materials in many areas of human endeavors including industry, agriculture, business, medicine and public health. Between 1997 and 2005, investment in nanotechnology research and development by governments around the world soared from $432 million to about $4.1 billion, and corresponding industry investment exceeded that of the governments’ by 2005. By 2015, products incorporating nanotechnology will contribute approximately $1 trillion to the global economy, While nearly anything can be toxic at a high enough dose, the more relevant question is: how toxic are nano-materials at the potential concentrations at which they might be used? Any toxic effects of nano-materials will be specific to the type of base material, size, shape and coatings. However, to determine and understand the toxic effects of nano-materials, strategies and interpretation of the data must be done correctly and assumptions taken into consideration. In toxicity studies of nano-particles, different research groups used different cell lines, culturing conditions, and incubation times. With our understanding about the nature of nano-particles during toxicity test, it is difficult to compare results from different research groups and determine whether the cytotoxicity observed is physiologically relevant. Many biological models, including cells in culture, aquatic organisms including embryonic zebrafish (Danio rerio), and whole-animal tests such as rodents, currently are used to determine potential toxicological effects of chemicals. In urban atmospheres, diesel- and gasoline-fueled vehicles and stationary combustion sources have for many years contributed particulate materials throughout a wide size range including nano-materials. The toxic effects of such particles are still being investigated with regulatory concerns moving from the traditional particles less than 10 µm in aerodynamic diameter and below. Experimental results indicate that increased toxicity of finer-sized particles. However, to determine and understand the toxic effects of nano-materials, strategies and interpretation of the data must be done correctly and assumptions taken into consideration. The range of nanotechnology products is very extensive and they can be broken down into a number of different compound classes, including metals, metal oxides, carbon, and semiconductor nano-materials. and all are harmful to you and the environment as, standardz, hahahahaha, :) #edio

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