Source: http://news.feedzilla.com/en_us/stories/politics/top-stories/294939025?client_source=feed&format=rss
Rose Bowl 2013 kim kardashian anderson cooper adrian peterson chicago bears tony romo kennedy center honors
Thursday, March 28, 2013
Saturn is like an antiques shop, Cassini suggests; Moons and rings date back to solar system's birth
Mar. 27, 2013 ? A new analysis of data from NASA's Cassini spacecraft suggests that Saturn's moons and rings are gently worn vintage goods from around the time of our solar system's birth.
Though they are tinted on the surface from recent "pollution," these bodies date back more than 4 billion years. They are from around the time that the planetary bodies in our neighborhood began to form out of the protoplanetary nebula, the cloud of material still orbiting the sun after its ignition as a star. The paper, led by Gianrico Filacchione, a Cassini participating scientist at Italy's National Institute for Astrophysics, Rome, has just been published online by The Astrophysical Journal.
"Studying the Saturnian system helps us understand the chemical and physical evolution of our entire solar system," said Filacchione. "We know now that understanding this evolution requires not just studying a single moon or ring, but piecing together the relationships intertwining these bodies."
Data from Cassini's visual and infrared mapping spectrometer (VIMS) have revealed how water ice and also colors -- which are the signs of non-water and organic materials --are distributed throughout the Saturnian system. The spectrometer's data in the visible part of the light spectrum show that coloring on the rings and moons generally is only skin-deep.
Using its infrared range, VIMS also detected abundant water ice -- too much to have been deposited by comets or other recent means. So the authors deduce that the water ices must have formed around the time of the birth of the solar system, because Saturn orbits the sun beyond the so-called "snow line." Out beyond the snow line, in the outer solar system where Saturn resides, the environment is conducive to preserving water ice, like a deep freezer. Inside the solar system's "snow line," the environment is much closer to the sun's warm glow, and ices and other volatiles dissipate more easily.
The colored patina on the ring particles and moons roughly corresponds to their location in the Saturn system. For Saturn's inner ring particles and moons, water-ice spray from the geyser moon Enceladus has a whitewashing effect.
Farther out, the scientists found that the surfaces of Saturn's moons generally were redder the farther they orbited from Saturn. Phoebe, one of Saturn's outer moons and an object thought to originate in the far-off Kuiper Belt, seems to be shedding reddish dust that eventually rouges the surface of nearby moons, such as Hyperion and Iapetus.
A rain of meteoroids from outside the system appears to have turned some parts of the main ring system -- notably the part of the main rings known as the B ring -- a subtle reddish hue. Scientists think the reddish color could be oxidized iron -- rust -- or polycyclic aromatic hydrocarbons, which could be progenitors of more complex organic molecules.
One of the big surprises from this research was the similar reddish coloring of the potato-shaped moon Prometheus and nearby ring particles. Other moons in the area were more whitish.
"The similar reddish tint suggests that Prometheus is constructed from material in Saturn's rings," said co-author Bonnie Buratti, a VIMS team member based at NASA's Jet Propulsion Laboratory, Pasadena, Calif. "Scientists had been wondering whether ring particles could have stuck together to form moons -- since the dominant theory was that the rings basically came from satellites being broken up. The coloring gives us some solid proof that it can work the other way around, too."
"Observing the rings and moons with Cassini gives us an amazing bird's-eye view of the intricate processes at work in the Saturn system, and perhaps in the evolution of planetary systems as well," said Linda Spilker, Cassini project scientist, based at JPL. "What an object looks like and how it evolves depends a lot on location, location, location."
The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology, Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The visual and infrared mapping spectrometer team is based at the University of Arizona, Tucson.
Share this story on Facebook, Twitter, and Google:
Other social bookmarking and sharing tools:
Story Source:
The above story is reprinted from materials provided by NASA/Jet Propulsion Laboratory.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
Journal Reference:
- G. Filacchione, F. Capaccioni, R. N. Clark, P. D. Nicholson, D. P. Cruikshank, J. N. Cuzzi, J. I. Lunine, R. H. Brown, P. Cerroni, F. Tosi, M. Ciarniello, B. J. Buratti, M. M. Hedman, E. Flamini. The radial distribution of water ice and chromophores across Saturn's system. Astrophysical Journal, 2013; (accepted) [link]
Note: If no author is given, the source is cited instead.
Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.
Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/r2bvS0rQl3A/130327170155.htm
warren sapp i robot the big c the visitor king of kings ostara masters 2012
Astrology 102 03/26 by Starseed Radio Academy | Blog Talk Radio
The Down & Dirty welcomes comedian/writer/podcaster Neal Brennan. He's known as co-creator of the Chappelle's Show and is appearing at the Laugh Factory this weekend.
IBM X-Force research team and professionals pause to read their own report on the trends and risks affecting IT Security.
Spencer Hughes is joined by television game show host legend, American pop icon, and Conservative Chuck Woolery!!
Philosopher Dr. Diana Hsieh will interview Professor Robert Garmong about "Should We Fear or Embrace China?"
Matthew A. Cherry debuts "The Last Fall" a coming of age sports drama about the difficulties an NFL player faces when transitioning to life after his playing days are over.
Raychelle Cassada Lohmann?, M.S., L.P.C?., is a professional counselor, author, speaker, blogger for ?P?sychology Today?.
Molly Fienning talks about her "aha" moment while on the flight line when she conceived the concept of "Babiators" sun-protecting aviator sunglasses for children.
Dr. Robert Hopper, PhD, the author of the book ?Stick With Exercise?, to talk about the best practices to guarantee exercise success.
Laura Theodore welcomes cookbook authors and chefs Nava Atlas, Leslie Cerier and Fran Costigan, to hear about how plant-based diets are good for your overall health.
Get Focused Radio welcomes special guest Elliot Tiber, the man who was instrumental in arranging the site for the original Woodstock Concert.
Debbi Dachinger is an expert in goal achievement. Debbi is a radio and TV personality; a three-time bestselling author, keynote speaker, and coach.
Best-selling authors Mali Apple and Joe Dunn discuss their award winning book, The Soulmate Experience and share what it takes to find your soulmate at mid-life.
Expert freshwater guide Gregg Silks jons the show with tips for you to become a great freshwater angler.
Alexis Babini is more than an average singer/songwriter, he's positioned to make a major impact on national music scenes.
Media Nite Radio welcomes actor, producer, director Patrick Kilpatrick to discuss his new film, "Active Shooter".
Sultry, hip and passionate best describes the lyric and music of the singing sensation the talented, victorious and beautiful Darnaa!
Matthew Ward is a Historian, an Edutainer and runs History Needs You, appeared in three series of the successful television show Horrible Histories and alsoThe Da Vinci Code.
Afronerd Radio welcomes iconic saxophonist, Maceo Parker to the show to discuss his new memoir, 98% Funky: My Life in Music.
Nigel McGuinness is a former Ring of Honor Wrestling World Champion and TNA Superstar, Nigel will discuss his self-made documentary "The Last of McGuinness".
Marsha Ambrosius a sought after songwriter and revered platinum-selling artist reinventing herself as a solo artist with her J Records debut disc Late Nights.
In this episode from The Lynch Series actress Laura Harring discusses her experiences working on the acclaimed film Mulholland Dr.
The King Jordan welcomes guest Mickey Sherman, who will be breaking down the Jodi Arias trial, Cannibal Cop, The Ohio Rape Case, and George Zimmerman Case.
Visit with Flula Borg. He has millions of YouTube views, many fans, a few albums, two books, celebrity interviews, yet Starbucks baristas still can't spell his name right on cups.
Source: http://www.blogtalkradio.com/starseed-radio-academy/2013/03/26/astrology-102
aziz ansari aziz ansari katherine jenkins peyton manning broncos mexico city earthquake stand your ground law dancing with the stars season 14
Wednesday, March 27, 2013
Samsung Galaxy S4 wallpapers, ringtones and 'S Voice' app leak
The Samsung Galaxy S4 launch might be over a month away, but if you're looking to bring a touch of SGS4 to your current device, a freshly-leaked selection of goodies may be able to help.
SamMobile has obtained a sampling of ringtones and wallpapers, along with the "S Voice" voice assistant app. S Voice works much the same as it does on any other Samsung device, though it does seem to have undergone some cosmetic changes since we last saw it. Note as this is presumably taken from pre-release firmware, things may be broken or slow, even if you're using it on a Samsung handset.
The wallpapers and ringtones are in line with what we'd expect form a Samsung phone, and eagle-eyed readers may remember some of the images from our hands-on coverage of the Galaxy S4. There's an abundance of primary colors, which we imagine is designed to show off the S4's saturated Full HD SuperAMOLED display. And the ringtones are dominated by the same mix of gentle, nature-inspired tones found on the Galaxy S4.
Download locations for the ringtones, wallpapers and S Voice app can be found at the source links below.
Update: The system image from which this stuff is taken is now available to download too.
 |  |
Source: http://feedproxy.google.com/~r/androidcentral/~3/6ffjUrZ87ZU/story01.htm
vangogh yield crossbow airhead atherosclerosis steven tyler tropic thunder
Aye-ayes: Endangered lemurs' complete genomes are sequenced and analyzed for conservation efforts
Mar. 25, 2013 ? For the first time, the complete genomes of three separate populations of aye-ayes -- a type of lemur -- have been sequenced and analyzed in an effort to help guide conservation efforts. The results of the genome-sequence analyses will be published in an early edition of Proceedings of the National Academy of Sciences online during the week of March 25.
The team of scientists is led by George H. Perry, assistant professor of anthropology and biology at Penn State University; Webb Miller, professor of biology and of computer science and engineering at Penn State; and Edward Louis, director of conservation genetics at Omaha's Henry Doorly Zoo and Aquarium and director of the Madagascar Biodiversity Partnership, NGO.
The aye-aye -- a lemur that is found only on the island of Madagascar in the Indian Ocean -- recently was re-classified as "endangered" by the International Union for the Conservation of Nature. "The aye-aye is one of the world's most unusual and fascinating animals," said Perry. "Aye-ayes use continuously growing incisors to gnaw through the bark of dead trees and then a long, thin, and flexible middle finger to extract insect larvae, filling the ecological niche of a woodpecker. Aye-ayes are nocturnal, solitary and have very low population densities, making them difficult to study and sample in the wild."
Perry added that he and other scientists are concerned about the long-term viability of aye-ayes as a species, given the loss and fragmentation of natural forest habitats in Madagascar. "Aye-aye population densities are very low, and individual aye-ayes have huge home-range requirements," said Perry. "As forest patches become smaller, there is a particular risk that there won't be sufficient numbers of individual aye-ayes in a given area to maintain a population over multiple generations. We were looking to make use of new genomic-sequencing technologies to characterize patterns of genetic diversity among some of the surviving aye-aye populations, with an eye towards the prioritization of conservation efforts."
Louis, with his team at Omaha's Henry Doorly Zoo and Aquarium and the Madagascar Biodiversity Partnership, worked to locate aye-ayes and collect DNA samples from three separate regions of Madagascar: the northern, eastern, and western regions. To discover the extent of the genetic diversity in present-day aye-ayes, the researchers generated the complete genome sequences of 12 individual aye-ayes. They then analyzed and compared the genomes of the three populations. They found that, while eastern and western aye-ayes are somewhat genetically distinct, aye-ayes in the northern part of the island and those in the east show a much more significant amount of genetic distance, suggesting an extensive period of time during which interbreeding has not occurred between the populations in these regions.
"Our next step was to compare aye-aye genetic diversity to present-day human genetic diversity," explained Miller. "This analysis can help us to gauge how long the aye-aye populations have been geographically separated and unable to interbreed." To make the comparison, the team gathered 12 complete human DNA sequences -- the same number as the individual aye-aye sequences generated -- from publicly available databases for three distinct human populations: African agriculturalists, individuals of European descent, and Southeast Asian individuals. Using Galaxy -- an open-source, web-based computer platform designed at Penn State for data-intensive biomedical and genetic research -- the team developed software to compare the two species' genetic distances. They found that present-day African and European human populations have a smaller amount of genetic distance than that found to exist between northern and eastern aye-aye populations, suggesting that the aye-aye populations were separated for an especially lengthy period of time by geographic barriers.
"We believe that northern aye-ayes have not been able to interbreed with other populations for some time. Although they are separated by a distance of only about 160 miles, high and extensive plateaus and major rivers may have made intermingling relatively infrequent," explained Miller. He added that the results of the team's data further suggest that the separation of the two aye-aye populations stretches back much longer than 2,300 years, which is when human settlers first arrived on the island and started burning the aye-ayes' forest habitat and hunting lemurs.
The team members hope that their findings will help to guide future conservation efforts for the species. "This work highlights an important region of aye-aye biodiversity in northern Madagascar, and this unique biodiversity is not preserved anywhere except in the wild," said Louis. "There is tremendous historical loss of habitat in northern Madagascar that is continuing at an unsustainable rate today. This study is an excellent example of how a comprehensive and coordinated effort in the field and laboratory can identify previously unknown patterns of biodiversity for an endangered species, which then can be used by conservation organizations to base their management strategies."
The authors added that, in future research, they would like to sequence the genomes of other lemur species -- more than 70 percent of which are considered endangered or critically endangered -- as well as aye-ayes from the southern reaches of the island of Madagascar.
In addition to Perry, Miller, and Louis, other scientists who contributed to this research include Stephan C. Schuster, Aakrosh Ratan, Oscar C. Bedoya-Reina, and Richard Burhans from Penn State; Runhua Lei from the Center for Conservation and Research at Omaha's Henry Doorly Zoo and Aquarium; and Steig E. Johnson from the University of Calgary in Alberta, Canada.
Funding for aye-aye sample collection was provided by Conservation International, the Primate Action Fund, and the Margot Marsh Biodiversity Foundation, along with logistical support from the Ahmanson Foundation and the Theodore F. and Claire M. Hubbard Family Foundation. Additional support comes from the National Institutes of Health, the National Science Foundation, the Pennsylvania Department of Health, and the College of the Liberal Arts at Penn State University.
Share this story on Facebook, Twitter, and Google:
Other social bookmarking and sharing tools:
Story Source:
The above story is reprinted from materials provided by Penn State. The original article was written by Katrina Voss.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
Journal Reference:
- George H. Perry, Edward E. Louis, Jr., Aakrosh Ratan, Oscar C. Bedoya-Reina, Richard C. Burhans, Runhua Lei, Steig E. Johnson, Stephan C. Schuster, and Webb Miller. Aye-aye population genomic analyses highlight an important center of endemism in northern Madagascar. PNAS, March 25, 2013 DOI: 10.1073/pnas.1211990110
Note: If no author is given, the source is cited instead.
Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.
Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/th-V7_WkuQM/130325160507.htm
hangout todd haley kareem abdul jabbar miramonte elementary school mark jenkins super bowl commercials 2012 mia
T-Mobile Goes Contract-Free
The imagined post-industrial wasteland, projected at the T-Mobile event, from which T-Mobile offers an escape.
"Please?stop the bullshit!" squealed T-Mobile CEO John Legere this morning. In introducing T-Mobile's new prepaid plans, he billed himself and his company as the "uncarrier," the anti-cellular company cellular company, one that's now doing away with contracts in favor of unlimited talk plans tiered according to data limits.
Wearing a T-Mobile T-shirt under a suit jacket and jeans, John Legere excitedly proclaimed his company's empathy for weary smartphone customers. "The industry's broken," he said, and in dire need of change. Legere offered his idea of that change in the form of T-Mobile's "value plans"?plans that seem prepaid but aren't. Instead, they're just simplified: Each comes with unlimited texts and minutes. (You can pay ahead of time, avoiding credit checks, but you won't get any subsidization on phones. Instead, you'd pay a downpayment on the phone and T-Mobile would tack on a monthly fee until you pay off the cost of the phone.)
Note that though Legere says the new plans come with "unlimited data," they don't. Data is still tiered: the company offers a choice of a 500 MB for $50, 2 GB for $60, and unlimited (with limited hotspot usage) for $70. Add new lines for $10 each.
Besides the possibility of going contract-free, the other news that got the bearded and hunched crowd to cheer was the $99 iPhone T-Mobile is now offering. (That, and John Legere's teasing as he tempted bloggers to flirt with his daughter?but what else would you expect from a cellphone event?). A small Apple crew showed up to give demos of the phone?which, Legere says, is better than the iPhone 5 everyone else has because it works on multiple bands (though it is, of course, the same iPhone 5 everyone else has). The company also introduced the HTC One and Samsung Galaxy S4?each for $99, too.
Making fun of AT&T was well-received, with cackles galore as CMO Andrew Sherrard held up the company's brochures, play-struggling to hold onto them all. "This is what we've been inspired by," he said. "We're here to change it all." All? That's a lot to promise, but it sure sounds good.
new york giants hot wings recipe 7 layer dip recipe chris carter superbowl 2012 kickoff time what time is the super bowl 2012 nfl mvp
Brown University student missing
Sunil Tripathi, a 22-year-old philosophy major at Brown University was last seen in the campus area on March 15, 2013, according to spokesman Gregory Comcowich. The FBI is helping Providence police in the search. Sangeeta Tripathi, the student's sister, told the Providence Journal that Sunil's wallet, ID cards, credit cards and cell phone were found in his room. Sunil, who grew up in Bryn Mawr, Pa., was living in Providence since 2008 and was on approved leave from the Ivy League school. The search for Sunil has expanded outside Providence to Boston, Connecticut, New York and Philadelphia.
Author: Stephanie Slifer
Credit: Facebook
Source: http://feeds.cbsnews.com/~r/cbsnews/feed/~3/E_Rf48xXujU/2300-504083_162-10016233.html
ashley olsen new apple tv sun flare love hewitt new ipad solar flare joseph kony 2012
Subscribe to:
Posts (Atom)