Friday, May 31, 2013

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May 31, 2013

Environmental Executive Moves: CBRE, Wilo, EnSafe, Earth911

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Pebbly rocks testify to old streambed on Mars

May 30, 2013 ? Detailed analysis and review have borne out researchers' initial interpretation of pebble-containing slabs that NASA's Mars rover Curiosity investigated last year: They are part of an ancient streambed.

The rocks are the first ever found on Mars that contain streambed gravels. The sizes and shapes of the gravels embedded in these conglomerate rocks -- from the size of sand particles to the size of golf balls -- enabled researchers to calculate the depth and speed of the water that once flowed at this location.

"We completed more rigorous quantification of the outcrops to characterize the size distribution and roundness of the pebbles and sand that make up these conglomerates," said Rebecca Williams of the Planetary Science Institute, Tucson, Ariz., lead author of a report about them in the journal Science this week. "We ended up with a calculation in the same range as our initial estimate last fall. At a minimum, the stream was flowing at a speed equivalent to a walking pace -- a meter, or three feet, per second -- and it was ankle-deep to hip-deep."

Three pavement-like rocks examined with the telephoto capability of Curiosity's Mast Camera (Mastcam) during the rover's first 40 days on Mars are the basis for the new report. One, "Goulburn," is immediately adjacent to the rover's "Bradbury Landing" touchdown site. The other two, "Link" and "Hottah," are about 165 and 330 feet (50 and 100 meters) to the southeast. Researchers also used the rover's laser-shooting Chemistry and Camera (ChemCam) instrument to investigate the Link rock.

"These conglomerates look amazingly like streambed deposits on Earth," Williams said. "Most people are familiar with rounded river pebbles. Maybe you've picked up a smoothed, round rock to skip across the water. Seeing something so familiar on another world is exciting and also gratifying."

The larger pebbles are not distributed evenly in the conglomerate rocks. In Hottah, researchers detected alternating pebble-rich layers and sand layers. This is common in streambed deposits on Earth and provides additional evidence for stream flow on Mars. In addition, many of the pebbles are touching each other, a sign that they rolled along the bed of a stream.

"Our analysis of the amount of rounding of the pebbles provided further information," said Sanjeev Gupta of Imperial College, London, a co-author of the new report. "The rounding indicates sustained flow. It occurs as pebbles hit each other multiple times. This wasn't a one-off flow. It was sustained, certainly more than weeks or months, though we can't say exactly how long."

The stream carried the gravels at least a few miles, or kilometers, the researchers estimated.

The atmosphere of modern Mars is too thin to make a sustained stream flow of water possible, though the planet holds large quantities of water ice. Several types of evidence have indicated that ancient Mars had diverse environments with liquid water. However, none but these rocks found by Curiosity could provide the type of stream flow information published this week. Curiosity's images of conglomerate rocks indicate that atmospheric conditions at Gale Crater once enabled the flow of liquid water on the Martian surface.

During a two-year prime mission, researchers are using Curiosity's 10 science instruments to assess the environmental history in Gale Crater on Mars, where the rover has found evidence of ancient environmental conditions favorable for microbial life.

More information about Curiosity is online at: http://www.jpl.nasa.gov/msl , http://www.nasa.gov/msl and http://mars.jpl.nasa.gov/msl/ .

You can follow the mission on Facebook at: http://www.facebook.com/marscuriosity and on Twitter at http://www.twitter.com/marscuriosity .

Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/VpzCbd8C5Ps/130530150547.htm

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Fearful Myanmar Muslims shelter in monastery

LASHIO, Myanmar (AP) ? More than 1,000 Muslims who fled Myanmar's latest bout of sectarian violence huddled Thursday in a Buddhist monastery guarded by army soldiers as calm returned to this northeastern city, though burnt out buildings leveled by Buddhist rioters still smoldered.

The army transported terrified Muslim families by the truckload out of a neighborhood in Lashio where overturned cars and motorcycles that had been charred a day earlier left black scars on the red earth.

"We heard things could get worse, so we waved down soldiers and asked them for help," said 59-year-old Khin Than, who arrived at the monastery Thursday morning with her four children and sacks of luggage along with several hundred other Muslims. "We left because we're afraid of being attacked."

The violence in Lashio this week highlights how anti-Muslim unrest has slowly spread across Myanmar since starting last year in western Rakhine state and hitting the central city of Meikhtila in March. President Thein Sein's government, which inherited power from the military two years ago, has been heavily criticized for failing to contain the violence.

In Lashio on Thursday, Buddhist monks organized meals for the newly arrived refugees, who huddled together in several buildings in the monastery compound.

Although a few Buddhist men could still be seen Thursday riding motorbikes with crude weapons such as sharpened bamboo poles, no new violence was reported. Several banks and shops reopened as residents emerged to look at destroyed Muslim shops. Trucks of soldiers and police crisscrossed main roads. They guarded the ruins of Muslim businesses that were reduced to ashes on Tuesday and Wednesday, erecting roadblocks from twisted debris.

At one corner, where the charred remains of a three-story building still smoldered, Muslim residents sorted through rubble for anything salvageable. One family packed electronics from their shop into the back of a truck.

A woman who had fled a mob a day earlier was still in a state of shock.

"These things should not happen," said the woman, Aye Tin, a Muslim resident who slept overnight in a local Red Cross compound. "Most Muslims are staying off the streets. They're afraid they'll be attacked or killed if they go outside."

The rioting began Tuesday after a Muslim man splashed gasoline on a Buddhist woman and set her on fire. Buddhist mobs responded by burning down several Muslim-owned shops, a mosque and an Islamic orphanage. Roving motorcyclists continued the violence on Wednesday, leaving one person dead and four injured.

Presidential spokesman Ye Htut said 25 people had been detained so far. He said all those arrested were from Lashio.

The violence is casting fresh doubt over whether Thein Sein's government can or will act to contain the racial and religious intolerance plaguing a deeply fractured nation still struggling to emerge from half a century of military rule. Muslims, who account for about 4 percent of Myanmar's roughly 60 million people, have been the main victims of the violence since it began last year, but so far most criminal trials have involved prosecutions of Muslims, not members of the Buddhist majority.

___

Associated Press writer Aye Aye Win contributed to this report from Yangon, Myanmar.

Source: http://news.yahoo.com/fearful-myanmar-muslims-shelter-monastery-103014793.html

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Living in poor area as teen could increase risk for chlamydia in young adulthood

May 29, 2013 ? Living in a poor neighborhood as an adolescent is linked to an increased risk of getting the sexually transmitted infection (STI) chlamydia in young adulthood, according to new research.

Ohio State University researchers analyzed data from a large national study that tracked youths over time. The analysis suggested that children who lived in poor neighborhoods during their teenage years had an almost 25 percent greater risk of having chlamydia in their early 20s -- even if they themselves weren't poor -- than did teenagers living in wealthier settings.

The effect of living in an impoverished neighborhood on the risk for later infection was unaffected by other known STI risk factors, such as depression, having multiple sex partners or beginning sexual activity at a very young age.

"There is a long-term effect of living in poverty on the risk for sexually transmitted infections in young adulthood, above and beyond behavioral issues," said Jodi Ford, lead author of the study and an assistant professor of nursing at Ohio State. "We have a lot of interventions trying to address sexual risk behaviors, but few target neighborhood poverty and disadvantage. And this work shows that living in a poor neighborhood can have a long-term effect on health."

Ford conducted the research with Christopher Browning, professor of sociology at Ohio State. The study is published in a recent issue of the Journal of Urban Health.

Ford and Browning accessed data from the National Longitudinal Study of Adolescent Health (Add Health) to conduct the analysis. The sample they studied included data from three separate interviews of 11,460 youths who participated in the national project. When they were first interviewed, the average age of the children studied was 15.6 years; by the time of the third interview, these same participants were between 18 and 27 years old.

The prevalence of chlamydia among the young adults surveyed was 4.6 percent -- relatively low compared to what national data suggest, Ford said. That could be because the national longitudinal study from which she drew her sample took place in schools, meaning it did not capture portions of the population who had dropped out prior to the beginning of the Add Health study.

Chlamydia is a bacterial infection that can affect both men and women, but can cause scarring and infertility issues in women if the infection persists. An estimated 2.86 million infections occur annually, according to the Centers for Disease Control and Prevention, but many are not reported because most people do not have symptoms and do not seek testing.

"Adolescents and young adults are the most likely to experience chlamydia infection in the United States. This study strengthens the evidence that to fully address the sexual health needs of this population, STI prevention efforts should also acknowledge the effects of neighborhood poverty," Ford said.

The researchers considered four characteristics from U.S. Census data from corresponding years to determine whether the youths lived in poor neighborhoods as teenagers: proportion of households below poverty, proportion of households on public assistance, total unemployment rate and proportion of female-headed households with children.

By applying statistical modeling to the data, Ford determined that young adults who lived in a neighborhood with higher concentrations of poverty during their adolescence had higher odds of testing positive for chlamydia in their early 20s compared to their more advantaged peers.

The researchers also examined whether risky sexual behaviors or depression occurring during the transition from adolescence to young adulthood explained the relationship between adolescent poverty and chlamydia risk, but the findings were not significant. This means the significant effect of exposure to neighborhood poverty during adolescence on chlamydia risk during young adulthood was not because of an increased likelihood of sexual risk-taking behaviors or depression.

This analysis of data on a broad level does not address the reasons behind how living in an impoverished area can affect health later in life. The work is part of Ford's ongoing investigation of how neighborhoods can influence risk for depression, infectious disease and other health problems in vulnerable populations.

She continues to use data from the Add Health project, which was funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development.

This study was funded by a Robert Wood Johnson Foundation Nurse Faculty Scholar grant.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_health/~3/aMC1oF89rYs/130529190733.htm

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News Corp to delist from London Stock Exchange

REUTERS - Rupert Murdoch's News Corp said it will cancel its listing on the London Stock Exchange (LSE) , citing low levels of trading volume.

The company said the volume of its stock traded on the LSE was less than 1 percent of the total globally. The effective date of the delisting will be June 28.

The New York-based company is separating its cable channels, movie studio and other entertainment assets from its newspapers, including The Wall Street Journal. The new publishing company, which will retain the News Corp name, officially kicks off on June 28.

The entertainment assets, including the Fox broadcasting network, will be known as 21st Century Fox. (Reporting by Ankur Banerjee in Bangalore; Editing by David Holmes)

Source: http://news.yahoo.com/news-corp-delist-london-stock-exchange-070113654.html

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Wednesday, May 29, 2013