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Thursday, September 4, 2008

Chrome gain 1% within 24 hours : 24hoursnews


24hoursnews

Google Inc.'s new Chrome browser grabbed 1% of the browser market in its first day out in public, Web metrics providers said today.

Both Net Applications Inc., a U.S.-based tracking company, and Irish vendor StatCounter put Chrome's total market share at around 1% less than 24 hours after its launch, passing rivals such as the current Opera and the ancient Netscape in the process.

"This is a phenomenal performance," said CEO Aodhan Cullen in a post to Statcounter's blog on Wednesday. StatCounter, which provides free visitor statistics tools to Web developers, monitors traffic on the sites run by its 1.5 million members.

Net Applications also tracked Chrome's debut, and echoed StatCounter's numbers. "We saw them peak at 1.48% last night, and they're hovering around 1% currently," said Vince Vizzaccaro, the company's executive vice president of marketing at Net Applications, in an e-mail Wednesday morning.

According to Net Applications, which is tracking Chrome's hourly numbers, Google's browser jumped from zero to 0.4% during the hour it was released yesterday. Nine hours later, at midnight EDT, Chrome accounted for 1% of the browsers used to visit the 40,000-some sites that the company monitors for clients.

As Vizzaccaro noted, Chrome peaked at 1.48% early Wednesday -- 4 a.m. EDT, 1 a.m. PDT -- and as of 11 a.m. EDT, held a 0.98% share.

"I'm certain usage will increase at night and on weekends, as companies won't want people testing Chrome at work," Vizzaccaro said.

Net Applications typically sees the same cyclic behavior from Mozilla Corp.'s Firefox, which jumps in share on weekends and during off-work hours.

Vizzaccaro wouldn't speculate on what browsers Google Chrome's users may be leaving. "We won't know that for a couple of weeks, as most people will test it along side of their normal browser for a while," he said.

With 1% of the market, Chrome immediately overtakes Opera Software ASA's Opera, which Net Applications pegged with 0.74% at the end of August, as well as the moribund Netscape, which the company said accounted for 0.72% of all browsers used last month.

AOL LLC, Netscape's owner, killed it last February when it issued the venerable browser's last update and urged users to switch to Firefox or Flock.

Microsoft Corp.'s Internet Explorer held 72.2% of the browser share last month, said Net Applications earlier this week, while Mozilla Corp.'s Firefox and Apple's Safari owned 19.2% and 6.4%, respectively.

Google launched Chrome Tuesday around 3 p.m. EDT. Currently, a version for Windows XP and Vista is the only one available for download. Chrome, which is built on the WebKit rendering engine -- the same open-source code used by Apple Inc.'s Safari -- features a privacy mode, a combination address-and-search bar, and runs each tab as a separate process to prevent a single site from crashing the entire browser

Wednesday, September 3, 2008

Scientists have discovered the crucial ovulation-triggering role played by a small protein molecule in the brain


Brain protein holds key to fertility
Scientists have discovered the crucial ovulation-triggering role played by a small protein molecule in the brain, a finding that could hold the key to new therapies for infertility.

Dubbed kisspeptin, the protein is known to play a vital role in kick-starting puberty.

Now, a group from the University of Otago led by Professor Allan Herbison, in collaboration with Cambridge University researchers, has published the first evidence that kisspeptin signaling in the brain is also essential for ovulation to occur in adults.

Studying female mice, the researchers found that signaling between kisspeptin and its cell receptor GPR54 was essential to activate gonadotrophin-releasing hormone (GnRH) neurons, the nerve cells known to initiate ovulation.

The research appears in the latest issue of the Journal of Neuroscience.

"This is an exciting finding, as people have been trying to find out precisely how the brain controls ovulation for more than 30 years. This work now reveals a crucial link in the brain circuitry responsible," Herbison said in a statement.

The study indicates that disorders affecting the signaling between kisspeptin and the GPR54 receptors will result in women being unable to ovulate.

As an approach to treating infertility in some women, it could allow for ovulation to be induced in a more natural way than current therapies, the research added.

"Targeting drugs to this chemical switch to make it work properly may help some people who are infertile, while finding compounds that can block this switch could lead to new contraceptives," Herbison added.

"Our findings show that kisspeptin may be a promising area to focus future research efforts aimed at either enhancing or regulating human fertility."

Herbison says his research group is now investigating what role kisspeptin-GPR54 signaling might play in the male reproductive system.

As for the protein's name "kisspeptin," the researchers say it is completely unrelated to its association with reproduction.

"The researchers who originally discovered the gene that codes for kisspeptin had no idea that it had a role in fertility -- it was named in honor of Hershey Kisses, as Hershey was the town in the United States where the scientists were based."

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