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WASHINGTON, Oct. 3 (Xinhua) -- Overweight or obesity may put children at three times greater risk for high blood pressure than those of normal weight, according to researchers from the Regenstrief Institute and Indiana University (IU) School of Medicine.Their study will appear in the November issue of Hypertension: Journal of the American Heart Association with advance online publication on Monday.More than 1,100 healthy Indiana school children were followed for nearly five years. The researchers found that when body mass index (BMI) reached or exceeded the 85th percentile for the age and gender of the child -- designated as being overweight -- the risk of high blood pressure nearly tripled. Obesity was defined as a BMI percentile higher than 95th. BMI is a measurement of body fat calculated from weight and height.Among study participants, 14 percent of overweight or obese children were pre-hypertensive or hypertensive, compared with 5 percent of normal weight children. These findings were consistent across age, gender and race.The average age at time of study enrollment was 10.2 years. Each child was assessed approximately eight times during the course of the study. All were healthy children and none were taking medication affecting blood pressure."Higher blood pressure in childhood sets the stage for high blood pressure in adulthood," said Regenstrief Institute Investigator Wanzhu Tu, professor of biostatistics at IU School of Medicine, who led the study. "Targeted interventions are needed for these children. Even small decreases in BMI could yield major health benefits."The researcher also found that leptin, a protein hormone which is involved in body weight regulation and metabolism, was positively associated with increased blood pressure in overweight and obese children.

SAN FRANCISCO, Jan. 13 (Xinhua) -- Google seems to get no blessings for a good start for its New Year resolutions as the Internet search giant got an earful of complaints about its new social search service and felt mortified by a customer-poaching scandal in its Kenyan division.On Tuesday, Google announced "search plus your world" to deliver personalized search results by embedding its social service Google+ to its search engine.Although Google called it as "a beautiful journey begins," competitors and industry watchers said it was "a bad day for the Internet." They accused the company of using its dominant search engine to promote its own social networking site by giving Google+ pages and profiles an artificially prominent position in search results.The search giant first had a public bickering with Twitter which issued a statement on Tuesday saying that "As we've seen time and time again, news breaks first on Twitter. We're concerned that as a result of Google's changes, finding this information will be much harder for everyone."Google on Wednesday made a statement on its official Google+ page, saying that "We're a bit surprised by Twitter's comments because they chose not to renew their agreement with us last summer." The agreement, in which Twitter gave Google access to public tweets, expired last July and was not renewed.Twitter fired back by demonstrating the inefficiency of the new Google search feature. Twitter general counsel Alex Macgillivray tweeted a page of Google search results for the search term "@WWE" which did not include World Wrestling Entertainment's Twitter page, but Google+ page.Macgillivray noted that with 792,642 followers on Twitter compared with 24,900 followers on Google+, WWE's Twitter page is a more relevant social source than Google page and should be presented in Google's search results.Facebook, Google+'s major rival, has been remaining silent this week publicly while its employees criticized Google's moves in public status updates. Several prominent Facebook engineers and directors shared a tech blog about switching default search engine to Microsoft's Bing after "Google broke itself."Facebook has been working with Microsoft to allow Bing to reveal more personalized content.Industry watchers are also crying foul at the privacy and antitrust concerns raised by the new search feature. Search Engine Land, a tech blog closely following Google's news, posted several examples of how Google favors its own social networking service.Industry watchdog Electronic Privacy Information Center told the Los Angeles Times that the group is considering filing a complaint with the U.S. Federal Trade Commission (FTC). The organization once made the complaint that resulted in Google's settlement with the FTC last year that requires the Mountain View, California-based company to submit to external audits of their privacy practices every other year.On Friday, a Kenyan business directory startup Mocality said that Getting Kenyan Businesses Online, a Google-backed initiative to give small businesses free websites for one year, routinely accessed Mocality's database to obtain sales leads.The Search giant's Kenyan division called Mocality customers to pitch Google's alternative service, claiming they have had a partnership with Mocality. Mocality CEO Stefan Magdalinski said there is no such partnership.In a statement sent to the U.S. media, Google said it is " mortified" to learn that a team representing Google improperly used Mocality's data and misrepresented their relationship with the Kenyan company, noting that it "unreservedly apologized to Mocality" and is still investigating the issue.On Monday, BBC revealed that Google admitted profiting from advertisements of illegal websites selling drugs, fake passports and unauthorized tickets for the 2012 Olympics.The ads had been removed by Google after they were brought to the company's attention, but the search giant told BBC that the company "keeps any money it might make from companies advertising illegal services before such ads are removed."Meanwhile, on Thursday, Microsoft announced it has signed a patent licensing agreement with LG Electronics on the manufacturer 's devices running Google Android platform, leaving Motorola Mobility the only major Android-powered device maker that refuses to strike a deal with Microsoft.After the announcement, Microsoft's directors have been taking to Twitter to taunt Google as the two companies had a history of public back-and-forth. But so far, it appeared that Google didn't have time to needle back.

TAIYUAN, Jan. 9 (Xinhua) -- China successfully launched the Ziyuan III satellite Monday from the Taiyuan Satellite Launch Center in northern Shanxi province.The satellite, a high-resolution remote-sensing satellite for civilian use, was launched at 11:17 a.m. aboard a Long March 4B rocket, according to a statement from the center.The satellite, weighing 2650 kg, entered an orbit of 500 km above the Earth about 12 minutes after it was launched. It has a designed life expectancy of five years.According to the center, the satellite is tasked with offering services to aid the country's land-resources surveys, natural-disaster prevention, agriculture development, water-resources management, and urban planning.The rocket also carried a satellite from Luxemburg, according to the launch center.The orbiter was developed and produced by the China Academy of Space Technology, a subsidiary of China Aerospace Science and Technology Corporation (CASC).The Long March 4B rocket is developed by Shanghai Academy of Spaceflight Technology, another CASC subsidiary. Monday's mission marked the 156th flight of China's Long March series of carrier rockets.

WASHINGTON, Dec. 21 (Xinhua) -- New research suggests that, in people who don't currently have memory problems, those with smaller regions of the brain's cortex may be more likely to develop symptoms consistent with very early Alzheimer's disease.The study was published Wednesday in the online issue of Neurology, the medical journal of the American Academy of Neurology.For the study, researchers used brain scans to measure the thickness of regions of the brain's cortex in 159 people free of dementia with an average age of 76. The brain regions were chosen based on prior studies showing that they shrink in patients with Alzheimer's dementia.Of the 159 people, 19 were classified as at high risk for having early Alzheimer's disease due to smaller size of particular regions known to be vulnerable to Alzheimer's in the brain's cortex, 116 were classified as average risk and 24 as low risk. At the beginning of the study, participants were also given tests that measured memory, problem solving and ability to plan and pay attention. The tests will go on over the next three yearsThe study found that 21 percent of those at high risk experienced cognitive decline during three years of follow-up after the MRI scan, compared to seven percent of those at average risk and none of those at low risk."Further research is needed on how using MRI scans to measure the size of different brain regions in combination with other tests may help identify people at the greatest risk of developing early Alzheimer's as early as possible," said study author Bradford Dickerson, of Massachusetts General Hospital in Boston and a member of the American Academy of Neurology.

WASHINGTON, Dec. 22 (Xinhua) -- The journal Science on Thursday chose the HPTN 052 clinical trial, an international HIV prevention trial as the 2011 Breakthrough of the Year.The study found that if HIV-infected heterosexual individuals begin taking anti-retroviral medicines when their immune systems are relatively healthy as opposed to delaying therapy until the disease has advanced, they are 96 percent less likely to transmit the virus to their uninfected partners. Findings from the trial, first announced in May, were published in the New England Journal of Medicine in August.The study was funded by the U.S. National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health."The HPTN 052 study convincingly demonstrated that anti- retroviral medications can not only treat but also prevent the transmission of HIV infection among heterosexual individuals," said NIAID Director Anthony Fauci in a statement. "We are pleased that Science recognized the extraordinary public health significance of these study results."Science's list of nine other ground-breaking scientific achievements from 2011 include:The Hayabusa Mission: After some near-disastrous technical difficulties and a stunningly successful recovery, Japan's Hayabusa spacecraft returned to Earth with dust from the surface of a large, S-type asteroid. This asteroid dust represented the first direct sampling of a planetary body in 35 years, and analysis of the grains confirmed that the most common meteorites found on Earth, known as ordinary chondrules, are born from these much larger, S-type asteroids.Unraveling Human Origins: Studying the genetic code of both ancient and modern human beings, researchers discovered that many humans still carry DNA variants inherited from archaic humans, such as the mysterious Denisovans in Asia and still-unidentified ancestors in Africa. One study this year revealed how archaic humans likely shaped our modern immune systems, and an analysis of Australopithecus sediba fossils in South Africa showed that the ancient hominin possessed both primitive and Homo-like traits.Capturing a Photosynthetic Protein: In vivid detail, researchers in Japan have mapped the structure of the Photosystem II, or PSII, protein that plants use to split water into hydrogen and oxygen atoms. The crystal-clear image shows off the protein's catalytic core and reveals the specific orientation of atoms within. Now, scientists have access to this catalytic structure that is essential for life on Earth -- one that may also hold the key to a powerful source of clean energy.Pristine Gas in Space: Astronomers using the Keck telescope in Hawaii to probe the faraway universe wound up discovering two clouds of hydrogen gas that seem to have maintained their original chemistry for two billion years after the big bang. Other researchers identified a star that is almost completely devoid of metals, just as the universe's earliest stars must have been, but that formed much later. The discoveries show that pockets of matter persisted unscathed amid eons of cosmic violence.