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Showing posts with label Technology. Show all posts
Showing posts with label Technology. Show all posts

Sunday, July 29, 2007

Indonesian coelacanth Make Scientists be Exciting

Ronan Bourhis said :

French experts equipped with sonar and GPS try to reconstruct trough asked an Indonesia (Manado) Fisherman how to catch a rare coelacanth fish, an awkward-swimming species among the world's oldest. This Full Article can read in Yahoo Tech News



A very rare coelacanth fish as Indonesian, Japanese and French specialists (unseen) carry out an autopsy of in Manado, North Sulawesi, in June. Coelacanths are among the world's oldest fish species. Their fossil records date back more than 360 million years and suggest the animal has changed little in that time.(Photo credit : AFP/File/ Ronan Bourhis)





Second Indonesian coelacanth known to science, later to become holotype of new species, Latimeria menadoensis. Photograph by Mark V. Erdmann, July 1998





Relate Article :

Sunday, July 1, 2007

About WIRED MAGAZINE: ISSUE 15.07 - How Slick It Is! Fill 'Er Up With Cooking Oil, Not Crude Oil

John Voelcker

No need to battle other eco-warriors for a spot on the Prius waiting list. If you want to drive a green machine, just troll craigslist for an old diesel car or truck. Any diesel engine can run on vegetable oil — either used (fryer fat) or fresh out of the 5-gallon jug (Costco, baby!). The conversion process can be embarrassingly simple. Rudolf Diesel encouraged the use of veggie oil in his original engine, and later models require minimal tinkering to guzzle Wesson instead of Exxon: a booster pump here, a high-flow filter there. Los Angeles based Lovecraft, the cottage-industry leader, has modified more than 1,000 vehicles and sells DIY kits for the mechanically inclined. The company will convert almost any diesel rig, but Mercedes, Volkswagen, and Ford are optimum choices. It's the perfect excuse to fry every meal. Do it for the environment.

Mercedes-Benz 300SD, 1981 85

Blue book Value $3,200 (average)
Conversion cost $700

The 300SD can run on vegetable oil without modification — until the fuel filter chokes on the more viscous liquid (the conversion kit includes a bigger, high-flow heated filter). But Lovecraft prefers the 300SD because its fuel tank sits high up, behind the rear seat: Gravity helps the oil flow without stressing the pump.


Volkswagen Jetta TDI, 1996 2006

Blue book value $3,800 - 8,950
Conversion cost $950
Various Veedubs used this turbodiesel motor, but it's most common in the Jetta. The conversion requires changing the electrical relays, replacing the glow plugs, and various other mods. But you get startling results: It performs better on vegetable oil than on regular diesel, though Lovecraft hasn't studied it enough to say why.


Ford F250 Diesel, 1995 2000

Blue book value $6,325 - 12,900
Conversion cost $950
Need a green pickup truck or van? Ford's ubiquitous 7.3-liter Powerstroke V8 has been known to last 500,000 miles and makes for a straightforward conversion. Lovecraft installs a heat exchanger to thin the grease so it combusts easily. And although the company usually swaps in custom glow plugs, if the stock plugs are working well, the engine starts fine on veggie oil.

Photo illustration by J.F. Sebastian

Source : http://www.wired.com


Making Water From Thin Air

A company that developed technology capable of creating water out of thin air nearly anywhere in the world is now under contract to nourish U.S. soldiers serving in Iraq.

The water-harvesting technology was originally the brainchild of the Pentagon's Defense Advanced Research Projects Agency, which sought ways to ensure sustainable water supplies for U.S. combat troops deployed in arid regions like Iraq.

"The program focused on creating water from the atmosphere using low-energy systems that could reduce the overall logistics burden for deployed forces and provide potable water within the reach of the war fighter any place, any time," said Darpa spokeswoman Jan Walker.

To achieve this end, Darpa gave millions to research companies like LexCarb and Sciperio to create a contraption that could capture water in the Mesopotamian desert.

But it was another company, Aqua Sciences, that developed a product on its own and was first to put a product on the market that can operate in harsh climates.

"People have been trying to figure out how to do this for years, and we just came out of left field in response to Darpa," said Abe Sher, chief executive officer of Aqua Sciences. "The atmosphere is a river full of water, even in the desert. It won't work absolutely everywhere, but it works virtually everywhere."

Sher said he is "not at liberty" to disclose details of the government contracts, except that Aqua Sciences won two highly competitive bids with "some very sophisticated companies."

He also declined to comment on how the technology actually works.

"This is our secret sauce," Sher said. "Like Kentucky Fried Chicken, it tastes good, but we won't tell you what's in it."

He did, however, provide a hint: Think of rice used in saltshakers that acts as a magnet to extract water and keeps salt from clumping.

"We figured out how to tap it in a very unique and proprietary way," Sher said. "We figured out how to mimic nature, using natural salt to extract water and act as a natural decontamination.

"Think of the Dead Sea, where nothing grows around it because the salt dehydrates everything. It's kind of like that."

The 20-foot machine can churn out 600 gallons of water a day without using or producing toxic materials and byproducts. The machine was displayed on Capitol Hill last week where a half-dozen lawmakers and some staffers stopped by for a drink.

"It was very interesting to see the technology in action and learn about its possible implementation in natural disasters," said Rep. E. Clay Shaw Jr., a Republican from Florida whose hurricane-prone district includes Fort Lauderdale.

"It was delicious," Shaw said.

Jason Rowe, chief of staff to Rep. Tom Feeney, another Florida Republican, called the technology "pretty impressive."

"I was pretty blown away by the things it's able to do," Rowe said. "The fact that this technology is not tied to humidity like others are makes it an attractive alternative for military bases in the Mideast where humidity is not really an option.

"It seems like it's a cheaper alternative to trucking in bottled water, which has a shelf life," said Rowe, who described himself as a fiscal hawk.

Once deployed, the machines could reduce the cost of logistical support for supplying water to the troops in Iraq by billions of dollars, said Stuart Roy, spokesman of the DCI Group, Aqua Sciences' public affairs firm.

The cost to transport water by C-17 cargo planes, then truck it to the troops, runs $30 a gallon. The cost, including the machines from Aqua Sciences, will be reduced to 30 cents a gallon, Roy said.

Several systems on the market can create water through condensation, but the process requires a high level of humidity.

Aqua Sciences' machines only require 14 percent humidity, Roy said. "That's why this technology is superior and why they are getting the contracts."

Tuesday, June 26, 2007

MSNBC is carrying Newsweek reporting on two new security breaches at Los Alamos

"MSNBC is carrying Newsweek reporting on two new security breaches at Los Alamos. Both of these latest incidents were 'human error' on the part of employees. In one, an e-mail containing classified material was sent over the open Internet rather than through the secure defense network. In the other incident, an employee took his lab laptop on vacation to Ireland, where it was stolen out of his hotel room. The machine reportedly contained government documents of a sensitive nature."

Read More...

Google asked the judge to extend the court's oversight of Microsoft.

A day before Judge Colleen Kollar-Kotelly is scheduled to review Microsoft's compliance with the terms of the agreement that settled federal and state antitrust cases against the company, Google asked the judge to extend the court's oversight of Microsoft.

Microsoft was supposed to go free, at least partially, on Nov. 12, 2007. Thanks to Google, the world's largest software company may remain on probation for a while longer.

Citing "Microsoft's history of aggressively minimizing the impact of court-ordered relief," Google said on Monday that the changes Microsoft promised to make in Windows Vista last week to accommodate competing desktop search software providers are vague and need to be clarified.

"The Court and the public would benefit greatly from a description of the precise measures Microsoft is planning to implement and the practical effect they will have on users of desktop search," Google said in its legal filing.

Microsoft is required to keep its "middleware" open to third-party developers to make up for its past anti-competitive behavior.

When the joint status report was issued last week by the U.S. Department of Justice, 17 state attorneys general, and the District of Columbia, Google's chief legal officer David Drummond offered a qualified endorsement of the steps Microsoft agreed to take to address the government's concerns. The remedies, he said, "should be improved further to give consumers greater access to alternate desktop search providers."

In Monday's filing, Google clarified its objections. "For example, it appears that Microsoft will continue to show its own desktop search results when users run searches from prominent shortcuts and menu entries throughout the operating system, though users will now be given a mechanism to request results from their chosen desktop search product by taking a second step after they have first viewed results from Microsoft's product," the filing states.

Google also claims that Microsoft "may intend to remove [menu entries in the Vista Start menu and in various 'right-click' menus] from Vista and deprive users of these access points altogether rather than provide the user choice [under the terms of Microsoft's agreement with the government]."

And Google also objects to "the automatic invocation of Microsoft's desktop search product following the boot sequence," which it notes Microsoft is planning to address only by providing unspecified technical information to companies and users.

Microsoft's allies, unsurprisingly, disagree with Google's call for continued oversight.

"Media reports of secret complaints and 11th hour court filings by Google show they are desperate to hamstring their competition in the courtroom rather than compete in the marketplace," said Jim Prendergast, executive director of Americans for Technology Leadership, in a statement. "It's outrageous that they would disregard an agreement reached by the Department of Justice, the state attorneys general, and Microsoft to file a last-minute complaint to advance their own selfish interests."

Americans for Technology Leadership is a tech industry interest group that counts Microsoft as its most prominent member. It frequently issues press releases that one might easily mistake for official Microsoft news releases, such as "Global Shipment of Windows Vista Great News for Consumers."

In 2001, the Los Angeles Times published an article linking the group to what was ostensibly a grassroots letter-writing campaign aimed at promoting settlement of antitrust charges pending against Microsoft at the time.

Saturday, June 23, 2007

Facebook welcomes outside services

By Greg Sandoval
Staff Writer, CNET News.com

update SAN FRANCISCO--Facebook is finally opening up to third-party software developers--a move that comes three years after rival MySpace jumped to a staggering lead in social networking largely by throwing the doors open to outside services.

Facebook announced Thursday that the No. 2 social-networking site is allowing software developers to create applications, or "widgets," for Facebook users. MySpace executives may yawn, but Facebook is also going to allow other companies to open retail services and advertise on the site, Facebook founder and CEO Mark Zuckerberg announced at a media event here Thursday.

"You can serve ads...or if you don't want to advertise, you can just sell something," Zuckerberg told an audience of journalists and outside developers. "You keep all the revenue."


This contrasts sharply with MySpace's philosophy. It's against MySpace rules for anyone other than MySpace to advertise on the site.

At the core of Facebook's new plans is the debut of Facebook/f8, a platform that allows anyone to build applications for social computing. The company is hoping that its 23 million monthly users and the opportunity to create for-profit businesses will attract developers to build a host of new networking services on top of the f8 infrastructure.

"Facebook is really trying to catch up technologically," said Emily Riley, an analyst with JupiterResearch. "They were lucky to build a loyal audience fast, but they don't have the media play that MySpace has. MySpace is the perfect combination of communication and new media."

Facebook has lagged behind MySpace in offering users a wide array of services that keep them engaged and spending more time on a site. The longer users stay logged on, the happier the site's advertisers.

MySpace was founded in November 2003, just three months before Facebook, but has accumulated nearly three times the traffic.

According to comScore, MySpace, which News Corp. acquired in 2005 for $500 million, saw 66 million monthly visitors in April compared with Facebook's 23 million.

Beginning Thursday night, Facebook announced that users will be able to equip their profiles with 65 new services, including photo slide shows (Slide), a music recommendation service (iLike) and a music player (Uber). A new video application will allow Facebook users to send video messages directly to friends within Facebook.

For many, Facebook has long been considered an online hangout for college kids, but Zuckerberg said the company is growing up. He pointed out during the press conference that now, 60 percent of Facebook's users are out of college.

During the press conference, Zuckerberg downplayed the possibility that Facebook's new open-door policy was late. He said that up until now, third-parties were allowed only to "drop some widgets" into a site.

"This is the first time that anyone has ever offered a platform that allows others to build full applications into a social-networking site," he said.

Nonetheless, Owen Van Natta, Facebook's chief operating officer, appeared to acknowledge that Facebook needed to one-up MySpace to attract developers.

"We needed a competitive edge," Van Natta said. "We want to create the most attractive site for developers to develop applications and a big part of that is to allow them to build businesses."

Riley cautioned that Facebook shouldn't pine to be the next MySpace. She pointed out that the Palo Alto, Calif.-based company grew a large audience by making it simple for users to communicate.

"Don't try to imitate MySpace too much," Riley said. "Make sure you stay true to what you do best today. Facebook is great for tight-knit communities and for people that already know each other offline. Facebook needs to remember that."

Facebook has long been rumored to be for sale. Asked whether that was true Zuckerberg said, "I've always thought that Facebook should remain independent and this just strengthens that."

Earthcomber- smart phone marks the spot

By Jessica Dolcourt – June 11, 2007, 10:22 AM PDT

I do not take directions lightly, primarily because if I did, I'd never get anywhere. For the woefully orientation-challenged (and easily frustrated) like me, legible maps and accurate instructions are crucial. Even more so is being able to access them from a PDA or smart phone when you're lost.

Thankfully, there's a proliferation of reliable mapping and GPS-locating software for mobile handsets, but today I'll focus on one that contains both downloadable and Web-based (WAP) components.

Earthcomber
Pros: Broad cross-platform support; numerous map services
Cons: US content only; content partnerships somewhat limiting; possible carrier fee
Download: Windows Mobile or Palm
WAP address for BlackBerrys and smart phones: http://mobile.earthcomber.com

Download version
Earthcomber began as a downloadable map application for Palm and Windows Mobile operating systems. The interactive map is this program's heart, allowing you to zoom in and out, maneuver around the geography, and synchronize your position with a GPS device. A listings guide pinpoints places of interest on the map--movies, events, shopping, hikes, it's your choice. Tapping a listing from the map calls up a phone number, address, and a well-integrated short-cut for getting directions. The only thing you don't get (and want) is the complementing URL link.

Web version
This past Tuesday, Earthcomber's introduced a WAP version compatible with any J2ME-enabled device, including BlackBerrys. Though intended to be faster and lighter than the downloadable application, my Treo 650's Blazer browser was a tad slow to switch my location and begin a search. I did appreciate, however, the seven ways to change locations.

I was impressed with Earthcomber's listing options and directions format, though I noticed that it didn't catch all neighborhood listings ("looklists"), such as the Thai restaurant down the street. It did, however, pull up Citysearch.com reviews for 20 other Thai restaurants. I liked being able to tap a listing's phone number to initiate a call. Again, I would like to see Web links integrated into the listing info, especially when using Earthcomber with my browser. Unlike the device application, online maps aren't interactive, and you'll need to squint or rely on the directions feature for fuller detail.

Mobile charges
While the Earthcomber application and WAP are free for users (Earthcomber's revenue comes from corporate content partnerships), service carriers may charge for air time and data transfers. Before calling it quits on paper and PC maps, check your plan. A monthly data transfer and/or Wi-Fi subscription could make the most financial sense and keep Earthcomber as a useful, affordable lifesaver.

Wednesday, June 13, 2007

Astronauts Get Extra Days in Space

DISCOVERY NEWS : June 12, 2007 — A new set of solar panels gleamed in the sunlight Tuesday on the International Space Station as the freshly installed array started opening up.

Two astronauts hooked up the new 300-foot panels during a spacewalk Monday, and during the night engineers at Mission Control began remotely unfolding the array from its storage box. The movement was to continue slowly throughout the day to let the panels warm gradually in the sunlight and prevent them from sticking together.

"It's really good to look out there and see those solar array blankets extended" a distance of one segment, said shuttle commander Rick Sturckow.

The shuttle astronauts arrived at the station on Sunday and have been granted an extra couple of days in orbit to allow time to fix a thermal blanket near the shuttle's tail that peeled back during its launch.

Experts don't believe the gap would pose any threat to the astronauts, though it could allow damage to the shuttle during its re-entry into Earth's atmosphere.

This photo provided by NASA shows the International Space
Station's Russian cosmonaut Oleg V. Kotov, as he participates
in a session of extravehicular activity (EVA)
Wednesday June 6, 2007.

Installation of the new solar array — part of the station's third pair of solar panels — started Monday.

After the array was moved into place on the station's girder-like backbone by the station's robotic arm, astronauts James Reilly and Danny Olivas removed locks and restraints on the new segment.

The start of their spacewalk was delayed by more than an hour because the four spinning gyroscopes that keep the space station properly positioned became overloaded; Atlantis was used to help control the station's orientation until the gyroscopes were able to take over again.

On Wednesday, an older solar array will be folded up into a box so it can be moved during a later shuttle mission. The retraction of that array will allow the newly installed pair of panels to rotate, following the direction of the sun.

Engineers at Johnson Space Center in Houston were already were practicing techniques the astronauts might use to repair the thermal blanket.

"It was a 100 percent consensus that the unknowns of the engineering analysis and the potential damage ... under the blanket was unacceptable and we should go in and fix it if we could," said John Shannon, chairman of the mission management team.

The thermal blankets are used to protect the shuttle from searing heat during re-entry into Earth's atmosphere. Engineers didn't think the intense heat generated by re-entry could burn through the graphite structure underneath it and jeopardize the spacecraft, but they worried it might cause some damage that would require repairs on the ground.

With three additional shuttle flights to the space station planned this year, NASA can't afford delays.

The repair to the thermal blanket, covering a 4-by-6-inch area over an engine pod, likely will involve an astronaut attached to the end of the shuttle's robotic arm and boom reaching the shuttle's tail area. No decision has been made on whether it will be made during a previously planned third spacewalk or if a fourth, extra spacewalk will be added.

The rest of the shuttle appeared to be in fine shape, Shannon said.

Tuesday, June 12, 2007

a polymer-based system that can heal itself when it becomes damaged

US researchers have taken a leaf out of nature's book to develop a polymer-based system that can heal itself when it becomes damaged. The material relies on an underlying network of vessels - similar to blood capillaries - that carry a healing agent to areas on the material's surface that become damaged. Unlike previous self-healing systems that relied on capsules of agent buried in the polymer and which became depleted after one use, the new system can respond to damage at the same point many times over.

Nancy Sottos's team at the University of Illinois used a technique called direct-write to create an epoxy-resin base infused with a network of interconnected horizontal and vertical channels 200 mikro-meter in diameter. These channels were filled with low-viscosity, monomeric dicyclopentadiene - the healing agent. A solid epoxy resin layer was deposited on top of the vascularised substrate. Grubbs' catalyst, benzylidene-bis(tricyclohexylphosphine)dichlororuthenium, was incorporated into this outer coating.


Left: Cross section of the self-healing surface showing that cracks, which initiate at the surface, propagate towards the microchannel openings at the interface (scale bar=0.5 mm). Right: Optical image of the self-healing structure after cracks are formed in the coating, revealing the presence of excess healing fluid on the coating surface (scale bar=5 mm)
© Nature


'After damage occurs at the coating, healing agent wicks from the microchannels into the crack(s) through capillary action,' the researchers report in the journal Nature Materials. 'Once in the crack plane the healing agent interacts with the catalyst particles in the coating to initiate polymerisation, rebonding the crack faces autonomically. After a sufficient time period the cracks are healed and the structural integrity of the coating restored. As cracks reopen under subsequent loading the healing cycle is repeated.'

The ability of the system to heal itself repeatedly is significant. Previous work with self-healing systems involved the use of capsules of healing agent embedded within the polymer substrate. These could only be used once before being spent.

The Illinois team likens the system to that found in nature. 'Healing in biological systems is accomplished by a pervasive vascular network that supplies the necessary biochemical components,' they noted. 'A cut in the skin triggers blood flow from the capillary network in the dermal layer to the wound site rapidly forming a clot.owing to the vascular nature of this supply system minor damage to the same area can be healed repeatedly.'

Ian Bond, of the aerospace composites research group at the University of Bristol, UK, is impressed. 'In the world of high-performance materials such as aerospace, where there are many safety-critical aspects, the idea of self-healing materials is very attractive if you can make it work,' Bond told Chemistry World. 'This study moves the subject of self-healing forward into a situation where you can have repeated healing, something that has not been demonstrated up to this point.'

The concept of 'vascularising' a polymer substrate is also intriguing, he said. 'This could lead to many more applications, such as thermal management. The idea of a vascular network in these materials is very interesting in its own right.'

Simon Hadlington

References

K S Toohey et al, Nat. Mater., 2007, DOI: 10.1038/nmat1934

Also of interest

Better, stronger, faster
Now we have bionic eyes and limbs, and chemists are creating artificial bodily tissues to rival nature's own, as Jon Evans discovers

RSC Publishing Nanoscience
ighlighting published papers in Nanoscience at the RSC

Source : http://www.rsc.org

"With Kyte being on Nokia phones, can you imagine the distribution?"

http://news.zdnet.com ; A start-up for sharing pictures and video online said on Tuesday that it has received funding from the investment arm of Nokia.

Kyte, which aims to extend video sharing to cell phones, did not disclose the size of the investment, but its co-founder hoped the deal would lead to a distribution agreement with the world's biggest mobile-phone maker.

"With Kyte being on Nokia phones, can you imagine the distribution?" said Daniel Graf, Kyte's chief executive.

The huge popularity of sites such as Google's YouTube has spawned interest in services that let users create and share media, which tend to be viewed on desktop computers.

Nokia Growth Partners' Rob Trice did not say if Nokia would put Kyte's application on its phones, though he said the investment ties in with Nokia's efforts to have more consumers use its phones to consume, create and share media.

San Francisco-based Kyte also lists as investors Swisscom and Niklas Zennström, who started Internet phone service Skype. The company plans to use the latest round of funding to build its operations in Europe, according to Graf.

Since Kyte launched five weeks ago, about 4,500 collections of video and photos, or channels, have been posted. Users can keep updating channels to, say, chronicle a holiday.

The channels can be embedded on social-networking sites such as MySpace.com, and viewers looking at the same channel can hold text chats using an instant-messaging feature.

Slide runs a similar service that lets consumers create slideshows that can also be embedded in social networks. Content created through Slide's service is viewed by tens of millions of people every day, according to Slide.

Source : http://news.zdnet.com