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Burned or used in fuel cells, hydrogen is an appealing option for powering future automobiles. This nontoxic gas could serve as a pollution-free energy carrier for machines of many kinds. When it burns, it releases no carbon . dioxide, a potent greenhouse gas.

And if hydrogen is fed into a fuel cell stack a battery like device that generates electricity from hydrogen and oxygen it can propel an electric car or truck with only heat and water as by products. Fuel-cell powered vehicles could offer more than twice the efficiency of today's automobiles. Hydrogen could, therefore, help ease environmental problems, including air pollution and its hazards.

Weight for weight, hydrogen contains three times the energy of gasoline (petrol) but it is impossible to store hydrogen gas as compactly as the conventional liquid fuel. One of the most challenging technical issues is how to efficiently and safely store enough hydrogen onboard to provide the driving range and performance the motorists demand. Feasible storage devices hold sufficient hydrogen to support today's minimum acceptable travel (driving range--almost 500 kms)--on a fuel tank that does not compromise on luggage room. These tanks have to be filled or recharged in a few minutes. Lot many researchers in the U8 Internal Energy Agency are expending considerable effort to overcome these limitations. Infact, 17 governments are committed to advancing hydrogen and fuel-cell technologies. In 2005 the US Department of Energy provide4 $ 30 million to fund the 80 research projects.

A 500 km. minimum driving range is one of the principal operational aims of the auto industry. Engineers believe that a~allon of gasoline is equal, on an energy basis, to a kilogram of hydrogen. (One US gallon is almost 3. 8 litres) Whereas today's automobile needs about 20 gallons of gasoline to travel 500 km., the typical fuel-cell vehicle would need only 8 kilograms of hydrogen. Several automakers have tested about 60 hydrogen -fuelled prototypes and demonstrated driving ranges of 200 to 300 kms.

By 2010 some auto companies expect the first production of fuelcell cars to hit-the road. A hydrogen storage system must carry enough fuel for at least a 500 km trip and also be light enough to haul around a car. For a system weighing 600 kilograms (a reasonable~ size of a vehicle), six kgs. would be stored hydrogen. Liquified stored hydrogen can improve it's stored energy density and could be used in cars, it drawbacks notwithstanding. Neverthe less, One world-renowned carmaker BMW is pushing this technology onto the road. The vehicle called HYDROGEN-7 will incorporate an, internal combustion engine capable of running on either gasoline for 500 Kms. or on liquid hydrogen for 250 kms.

Chemical compaction: to raise energy density scientists have been able to take advantage of the chemistry of hydrogen itself. In it~ liquid phase, hydrogen molecules contain two bound atoms each. But when hydrogen molecules are chemically bound to certain other elements, they can be packed even closer together than in liquid hydrogen.

Some researchers are focusing on a class of substances called reversible metal hydrides, which were discovered by accident in 1969 at the Philips Laboratories in the Netherlands. Investigators found that a Samarium-Cobalt alloy when exposed to pressurized hydrogen gas it would absorb hydrogen, somewhat like a sponge soaks up water. When the pressure was then removed, the hydrogen within the alloy reemerged in other words, the process was reversible.

In the US, scientists like Jame Reilly and Gary Sandrock, pioneered the development of hydride alloys. This work formed the basis for today's widely used Nickel-Metal hydride batteries. The density of hydrogen in these alloys is 150 % more than liquid hydrogen! Such properties of metal hydrides are well suited to automobiles. Although the current metal hydrides have limitations, many automakers see them as the most viable low-pressure approaching the near future. Toyota and Honda automotive engineers, are planning a so-called hybrid approach in a system that combines a solid metal hydride with moderate pressure (lower than 10, 000 psi), which they predict could achieve a driving range of more than 500 kms.

Designer Materials: recent developments in nanoscale engineering have yielded a host of new high-surface-area materials, some with ~ more than 5, 000 sq. mt. of surface area per gram of material. Carbon -based materials are mostly light weight and low cost. Over the centuries, the basic promise -and challenge-of using hydrogen for transportatiQ1has remained fundamentally unchanged. Nevertheless finding a suitable container to store hydrogen in automobiles will soon permit people totravel across the globe in the next decade without fouling or polluting the sky above us.

Archna Gupta is a veteran in the marketing of Internet and writing of the articles on the range of subjects. For any information on currently working on India Holidays and Amarnath Yatra

A Shop Stacked with All Star Game Gear – Paradise for Sports Fans

If you are a sports fan looking to purchase a special kind of merchandise, then you should take a look at the All Star game gear range. Many great products are stocked by both sports shops and online stores.

What is All Star Game Gear?

All-star game gear is a special kind of sports merchandise that’s tailor-made for the true sports fan. This range of replica sports wear merchandise is just like what the players wear in the all-star games. All-star games are played by the best players from the sports leagues. There’s the Major League Baseball (MLB) all-star sports merchandise, the National Football League (NFL) all star sports merchandise, and the National Hockey League all-star sports merchandise - so there’s a fantastic range of products available to buy.

All-star MLB Merchandise

We have a huge range of all star sports gear available for the ultimate major league baseball fan. Sports shops these days are chock-a-block with merchandise designed to satisfy any sports fantaic. The choice is immense and stretches across various categories.

If you are looking for headgear then the MLB League’s ‘all over white’ 59fifty cap might just be the one for you. Lovers of trinkets won’t be disappointed,. Jewelry such as the State Champs Baseball Logo Pendant will help you make a mark as a dedicated sports fan. Online shops like diehardfans.com stock all kinds of all-star sports merchandise including the many different types of all-star jewelry. Products include watches, bracelets, pins and pendants.

All-star NFL Merchandise

NFL all-star merchandise is simply too good to resist. Because all of our merchandise on sale is all-star means that anything you choose to buy online will show your support for your favorite players from your favorite teams. diehardfans makes sure you don’t have to search for a shop anywhere else because it’s stacked with the kind of all-star NFL merchandise you want.

One of our most popular products on display is the NFL Shield Deluxe Replica Helmet. If the replica helmet isn’t high up on your wish list, don’t fret. You could choose something else for your home or office. An NFL All Star House Divided Mat could be a great buy, especially if you have a divided household who support different teams. You can also choose from gift items like the London Game – Chargers vs. Saints Official ‘Flip’ 24 KT Gold Coin. Sound’s good doesn’t it? It’s definitely worth a buy and what’s more this and numerous other NFL merchandise like this is available at diehardfans.com.

All-star NHL Merchandise

An NHL fan looks forward to a National Hockey League All-Star game in the same way as a young child gets excited at Christmas time. Typically held when half of the regular season is finished, the NHL all star game is as keenly contested asany other game held throughout the season.

NHL all star merchandise meets the fan’s hunger to be closely associated with the All-star teams at all times. Seeing this inherent need of NHL fans, shops, these days are well stocked with all kinds of NHL all star merchandise. Fans can take their pick from categories like headwear, jewelry and gifts. Some of the jewelry items available include the Shield Men’s All Star Watch, Shield Ladies All Star Stainless Steel Watch, and Hockey Player Skating Logo Silhouette Pendant – GP amongst many other worthy purchases. The choice is unlimited and fans are free to choose what all-star NHL Merchandise that they think will showcase their support for their team in the best possible manner.

There is no doubt that online shops like diehardfans.com that are well-stocked with all-star game gear are a virtual paradise for sports fans. Another great advantage of using diehardfans other than its huge range of choice is the fast and easy item selection process. You can spend all the time that you want choosing just the right sports merchandise from the comfort of your home and just by the click of a mouse.

About the Author

Katie writes article on Sports products. Among her many written articles, one is on MLB Shop, Atlanta Braves Merchandise, and Boston Red Sox Merchandise online to present your partner, parents, and friends.

this is perfect?

http://games.espn.go.com/nba/features/traderesult?players=981~2748~617~1016~615~510&teams=21~11~11~21~13~13&te=&cash=

suns get browns giant contract but its only one year so nxt offseason they have cap room fo the stacked free agentcy of 08 and lose marions giant contact
and they also get a proven 3 point shooter and everyone knows how they love that

the pacers already said they would trade odom and bynum for oneal the lakers just need to take it

the lakers would get marion and oneal that would make kobe happy and they could offer him a contract extention

soooooo do u like it

yes

Offshore well blowout preventer was supposed to be fail-safe
At the heart of the Gulf of Mexico oil spill is a 40-foot-high stack of steel holding multiple hydraulic valves designed to cap a well before it turns into a gusher.

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