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Thursday, October 8, 2009

Clean Energy from BIOmass

Clean Energy from Biomass

Biomass is a renewable energy resource derived from the carbonaceous waste of various human and natural activities. It is derived from numerous sources, including the by-products from the timber industry, agricultural crops, raw material from the forest, major parts of household waste and livestock manure.

Biomass does not add carbon dioxide to the atmosphere as it absorbs the same amount of carbon in growing as it releases when consumed as a fuel. Its advantage is that it can be used to generate electricity with the same equipment or power plants that are now burning fossil fuels.

Biomass is an important source of energy and the most important fuel worldwide after coal, oil and natural gas. Traditional use of biomass is more than its use in modern application. In the developed world biomass is again becoming important for applications such as combined heat and power generation. In addition, biomass energy is gaining significance as a source of clean heat for domestic heating and community heating applications.
Biogas is a product of fermentation ( anaerobic process ) of organic material. Organic means substances from plants or animal origin and with a high content of carbon. The main goal of the fermentation is to produce biogas as a energy source of renewable energy. The main components are methane (CH4, round about 60 %) and carbon dioxide ( 30-40 %).

Sunday, October 4, 2009

Digital ant for cyber security

Digital ant for cyber security
Ants are normally very fast and quick in action for searching food. Based on its activities, ant colony algorithm has been developed by the technology world and put it in many real time applications.
Even when its colony is under threat, it behave in such a way, it protect its colony from any intruders. Ants use swarming intelligence to detect intruders. While it detects a threat, it joins with many other ants to overcome their opponents.
This technique is effectively incorporated by cyber scientist into their security system at Wake Forest University, North Carolina, US. They call the ants as “digital ants” which will wander through computer networks looking for any intruders or worms or virus. Each time a digital ant detects any intruder, it is programmed to leave a strong digital scent ( a real ant leave a scent called as pheromones). The stronger scent trails attract more ants, producing the swarm that marks a potential computer infection. The researcher at the University has said that 3000 different types of digital ants could be deployed for evidence of a threat. As the digital ant moves over the network, they leave digital scent as trails to guide other ants.
This is very interesting which saves our computers and networks from viruses

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