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Buoy become one of the ocean wave energy harvester.
RESEARCHER University of Oregon publishes latest innovative technologies that are named Permanent Magnet Linear Buoy. Buoy named because it is the basic principle, the latest technology installed to take advantage of ocean waves on the surface. In contrast to the buoy that is used to detect the waves that keep potential tsunamis.
Oregon researchers explain the basic principles of electricity producing the buoy is to float on the surface. Ocean waves continued playing and rhythmic back and forth in this buoy will be converted into electrical harmonic motion.
Brief as seen from the shape, this buoy dlinamo similar to a bicycle. Cylindrical shape with electricity-producing device on the inside. Buoy floating on the surface of the sea with a position partially submerged and partly floating.
Kunciya, there is an electrical device in the form of coil (coil surrounding the bar magnet at the buoy). When the waves reach the buoy, the buoy will move up and down relative to the bar magnet that can menimbukan electrical potential difference and resurrected. "Of course in order to move the coil is attached to the buoy attached to the bottom of the sea," said Annette von Jouanne, technicians from Oregon State University (OSU).
Jouanne tells us this system in the experiment is placed about one or two nautical miles from shore. Wave conditions and strong enough to swing a larger wave will generate electricity with higher voltage. Based on the results of the University of Oregon study, each buoy capable of producing 250 kilowatts of power.
"There are several options to generate these resources," said Jouanne. Explanation of the above using the coil technique that moves up and down, but could also bar magnet with a technique that moves up and down. The second option by using the buoys, the placement of the coil and bar magnet can also be placed at the bottom or on the surface of the sea.
Jouanne said, it offers technology has many advantages compared to marine technology. "The availability of this technology reached 90 percent and the resulting energy density is higher," he said. Engine itself can also be assembled and used in small or large scale depending on the energy required. The potential use of energy can be applied in many countries especially those with coastal areas.
Compared with wind or solar energy, ocean wave energy density much higher. The same researchers from OSU, Alan Wallace says this wave of energy supply with only a floating buoy 200, one port or major cities such as Portland's can take advantage of abundant energy so without charge.
Researchers believe that if the results of these studies was optimized along the coast, all the electrical energy in the world could be fulfilled. "This amount is estimated at only 0.2 percent of the energy to take the beach," said Alan. Keyakinamiya even more strengthened by the energy efficiency of high income and large, ocean wave energy could be a major energy instead of energy now.
In addition to economic value is promising there other things that can provide benefits in the environmental field. This energy is more friendly Iingkungan, does not create noise pollution, emissions of C02, as well as visual pollution as well as to provide space for marine life to form colonies of coral reefs along the anchor which is planted on the seabed. In cases like this are usually more profitable because the fish and sea animals are always more assembled.
Buoy placement with size not too big nor interfere with navigation. The average large buoy with less than two meters, large or small boats can see these objects and can be avoided.
Sea Wave Power Problems Still There
RESEARCHERS from electrical and lighting departments Uppsala University, Sweden, conducted a simulation with encouraging results. Permanan electricity using wave power swing which he is successfully reached 100 kW. The purpose of this study was to mengonstruksikan to how the optimal price incurred to produce electricity, the cost of maintenance and its impact on the environment.
Research conducted by four researchers Sweden, Ivanova, 0 Agren, H. Bernhoff and M Leijon found that the slow flow of ocean waves affect the conversion into energy. In this case to improve acquisition of the desired electrical design of the coils should be enlarged. With the increasing movement in the engine gearbox (where the coil) nilal fluk (magnetic field) can be greater that the energy conversion could be even greater.
"Research still must continue," said Bernhoff. From the study of shapes, the Swedish team still has not predict whether the form of octagonal geometry gearbox is better than a square or hexagon. "The piston in this engine is very interesting because it could affect the earnings power and efficiency required in the production of electrical equipment," he added.
In theory, many who know the sea wave energy can be used sebagal drivers of change in the gearbox fluk. Fluk change it from wave converted into electrical energy and then dlimanfaatkan society.
It is a problem is critical when there nilal air buoy is in compression. Bernhoff indicate if the condition of the piston movement as a wave shake continuously pumping, there will be downsizing. But if the air is reduced there will be the effect of torque (friction) is increasing.
Second, the observations made by the team, the problems of the AC power output generator buoy model is not as smooth and as good as that produced electricity generators in general. According to the researchers that the very small possibility to generate a constant electric waves of the sea waves, but by way of merger of other generator output it can be reduced. (National Journal, September 27, 2007 / humasristek)
15 October 2009
Sea Wave Energy Dance
The Virtual Self Replicating
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Site designed MyCyberTwin could be twins ourselves
A new website is now presented by the programmers Massachusetts Institute of Technology (MIT), United States. This site is packed like a blog. For those of you who often create a blog, it seems this site is referenced. Because, in addition to presenting the unique features and great performance, this barn present site more interactive with chat programs.
Therapy psychologist at MIT, Joseph Weizenbaum, say, this new website can be a means to learn, vent, or do business. Categories are grouped and demand is very much predictable. "In addition to very well displayed, the web is also free," he said.
For chat penghobi do not have to worry about them in status on or off even though one is not online, chat activity can still be continued as usual. "Why you are here or here," said a user when you chat.
All this happened because the activation MyCyberTwin program. Similar programs have been presented earlier in the year 1966 named Eliza. Namur is the latest to be featured more interactive with more besar.Pelayanannya database not only the speaker could be better. Like an assistant, berprogram MyCyberTwin this site can be set up to be your twin.
"No one is taboo if it was you," he said. That does not mean fraud, but the program was created with the involvement of psychologists can be a colleague on the internet.
We have a reliable chat program into our twin on the internet is still in experimental stage. But, his ability was very good for dialogue and provide the relevant questions. Completeness become more attractive again in the presence of psychologists in the making of this website.
For security, customized web pages with setting the owner. For example, you do not want to engage in discussions of pornography, acts of terror, political or other possibilities in matters of religion. Everything contained in this site
can be processed and adapted to our personality. In fact, the speaker database engine, automatic even in the dialogue can be adapted to our personality. This makes the new web system is referred to as our twin in the internet.
Although still in testing stages, the machine has direncanankan since 1991 is expected to be a pioneer of interactive virtual world without human involvement. We have an interactive dialogue choices can make you look smart, intellectual, stupid or dangerous. It all depends on which 30 questions must be answered and what it describes as yourself. "This is what causes our projects involve some psychologists," Weizenbaum said.
In addition, to make this website truly artificial personality, additional cars will be included for memirip-miripkan personality will also involve the 425 questions to be answered mendalarn. This option will seseoarang to categorize into 18 subject categories that describe the personality as humorous, familial, philosophical, like politics, and so on.
Many Diminati
liesl Capper, CEO of the company's Internet RelevanceNow funding in Australia, said, the presence of twinning in the world of the Internet makes the Web more attractive MyCyberTwin. At least, not yet launched a full one month, as many as 10,500 people had become members. Until the next mid-July, has registered 18,400 people.
Registration on this site was fairly easy. Form is filled not so much, - it hd field name, e-mail for the activation and questions Beth user-name password to login. After that, you can proceed to the choice of activation, the appearance and subsequent processes such as creating blogs, websites, Myspace, profile, visitor or other management. As for option enrollment category can be included for cloning options, academic, business, celebrity or otherwise. .
Video Hologram Based
MAKE A similar reproduction of living things do need the passage of time. long. Examples are MyCyberTwin project called virtual machines with the ability to direct dialogue with pernilik personality with his interlocutor. This project already took place 10 years ago and its beta version is now emerging.
Still in a similar project, technologists Massachusetts Institute of Technology (MIT) also began to produce other products to make a reproduction. This product will become the embryo of a video hologram that can be installed in the house. The form is a transparent screen. Size no more than the amount of jewelry box for almost 10 centimeters. This product is called Mark III. Fourteen years ago, Mark II version, was successfully created. Model alai is the creator of the hologram is almost large enough size bed and placed only in the laboratory.
Michael Bove, researchers from the MIT Media Laboratory mention made Mark 11 is now more a child. The team managed to create a holographic video display up to a few inches from the surface of the screen. "Our goal is to create a new video display 3-D," said Bove. These products can be dedicated future right to a special community and of course the medical community.
Mark III is scheduled for completion in late summer this year. If completed, this product will be placed in a standard PC and the size is small enough when placed on the table.
Bove said the new product which is translucent white, the production cost is much cheaper than the previous generation. "Once Mark H takes a lot of places and the PC, but this is quite simple," said Bove.
Besides small enough, this latest version is also much cheaper than the production side. Estimated to create a single screen rates only takes a few dollars. The research team believes that their product will be in demand, especially for the. game lovers.
Development of the MIT holographic video will still continue until the high resolution. Previous versions, model Mark I and Mark 11, only a low resolution.
"What is more significant in size only to memugkinkan placed in the lab. For that since the 1980s, Mark developed the concept for this technology can move from the laboratory into the home. Then we lived increase the resolution," Bove said. (National Journal, July 4, 2007 / humasristek)
ROBOT NUCLEAR ENGINEERING WORKS
Source: Compass
For Dimas, STAR, Dhani, and Dean, making the robot does not have to be expensive. Here are their tips to follow jadingan handle Intelligent Robot Contest Indonesia (KRCI) expert class in 2005, held in the Hall of the UI, Saturday (14 / 5), aka independently without the help of funds from the committee. To create a robot named Akantrak, they spend just as much as Rp 300 thousand.
The largest costs are the motor components that make the robot can move. Used for the course, worth about USD 100 thousand. The robot uses three mikroprocessor MCS 89C51 series of 51 each for Rp 10 thousand. While the rest of the other funds used to purchase aluminum tubes, wires, and other electronic equipment in the used market.
Although made of components used, the design of the robot origin Akantrak not so. Dhani and his colleagues claim that the robot can walk on the ramp up to 45 degrees, and in theory can run faster because it uses a chain instead of wheels like those used most of the other teams. So that the robot shape is more like a tank than a car or similar wheeled vehicle.
To extinguish the fire, use aluminum tube one centimeter in diameter filled with explosive low explosives, such as commonly used in fireworks, to encourage diiisi water in front of the tube. Dean is Kebutulan nuclear engineering student University of Gajah Mada (UGM) is very understanding blasting techniques. While Andhika and Dhani, both students and Instrumentation D3 UGM, stringing responsible electronic sensors and components.
Dimas, a student of Information Engineering, Universitas Islam Negeri (UIN) Syarif Hidayatullah who happened to one high school with Dean, was invited to help the Assembly language programming, computer language used to program mikroprocessor. Distance Jogjakarta-Jakarta not be an obstacle for them to collaborate via email and telephone.
Participation Akantrak not considered before. Dhani admitted that the proposal delivered on making robots sending limits specified postmark committee. Akantrak success in the nomination alone was more than enough.
Target is expected by Dhani and his colleagues are learning. At least not by following the race, his knowledge increased, especially in the use of components and appropriate technologies.
Cheap Robot
The strategy they employ is to choose the components are cheap. For example in the
selection processor, used 89C51. Besides cheap, MCS 51 series C more easily in the flash (optional program) through a simple set of tools installed on. To fill the program in other series mikroprocessor, flash downloader is usually required that cost about 300 thousand.
Infrared sensor used to detect the existence of the wall on either side of the robot is taken from an old TV remote is still working. While light sensor to detect the fire, taken from an optical mouse. Chain to walk also purchased from the market ends around Beringharjo market, Jogjakarta.
Unfortunately they failed to show good performance when the audience was curious to see his ability. In the presentation, the robot is not able to work out. Once hit a wall, suddenly, in which the program reset (dead) because there konslet cable. Whereas before being taken to Jakarta, the robot can work well.
"There may be a cable short circuit that is connected during the trip due to shake-Jakarta Jogjakarta because we had to dismantle the components to install is not risky if taken in one piece," said Dhani.
However Akantrak presence as evidence that a robot does not have to be expensive. Willingness and confidence team enviable Akantrak makers. (Rev.)
08 June 2009
award dari temen
award..lagi sob......!
award kedua dari cowok lugu...,
makasih sebelumnya, juga buat sobat-sobat yang punya award. sering-sering aja deh bagi-bagi awardnya.
Ok, langsung aja.
ini awardnya.....
kali ini gak pake syarat yang macem-macem. cuma harus tampilin awardnya trus bagiin sama 10 blogger lainnya.
blogger yang beruntung kali ini menurut gue adalah... (perlu diketahui nih, gue musti blogwalking dulu )
1. mz galang
2. open book
3. epe-sttp
4. eksplorasi dunia
5. blognyah alqoernia
6. amrull
7. alvino-yasmin
8. flowers-bordier
9. andika089
10. jhokerz
dan ini kode htmlnya....
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