Source: http://news.feedzilla.com/en_us/stories/politics/top-stories/314948153?client_source=feed&format=rss
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Tuesday, June 25, 2013
Monday, June 24, 2013
Excited, but cold: Scientists unveil the secret of a reaction for prebiotic synthesis of organic matter
June 24, 2013 ? How is it that a complex organism evolves from a pile of dead matter? How can lifeless materials become organic molecules that are the bricks of animals and plants? Scientists have been trying to answer these questions for ages. Researchers at the Max Planck Institut f?r Kohlenforschung have now disclosed the secret of a reaction that has to do with the synthesis of complex organic matter before the origin of life.
Since the 1960's it has been well known that when concentrated hydrogen cyanide (HCN) is irradiated by UV light, it forms an imidazole intermediate that is a key substance for synthesis of nucleobases and nucleotides in abiotic environment. The way how UV radiation acts in this reaction to produce complex organic matter was, however, never clarified. Dr. Mario Barbatti and his colleagues in Germany, India and Czech Republic have now shown how this process occurs via computer simulations.
Using diverse computational-chemistry methods, the team has arrived at astonishing conclusions: For example that the reaction does not take place in the hot spot created by the solar radiation. "This has nothing to do with heat, but with electrons," says Mario Barbatti.
The reaction proceeds through a series of electronically excited intermediates. The molecules get into the "electronic excited state" because of the UV radiation, which means that their electrons are distributed in a much different way than the usual. That changes the molecule's attitudes. "But this takes some time," says Mario Barbatti. They showed that the radiation energy is dissipated too fast, and because of that each reactant molecule absorbs hundreds of UV photons before it finally gets converted into the imidazole intermediate.
"This is very inefficient -- and quite extraordinary," says Mario Barbatti. That is why it was quite challenging to comprehend the reaction, explains the physicist from Brazil. He and his colleagues have calculated a lot of possible intermediates, tried -- and discarded most of them. Finally they found out that there is only one single pathway that is consistent with the fast energy dissipation and previous experimental observations.
But why did they work on the computer? Isn't it the case that chemical reactions are worked on in laboratories? "Some intermediates are too elusive to analyze them in the laboratory -- they disappear before we may see them," Barbatti explains. Computational Chemistry allows the scientists to comprehend the reactions in a theoretical way.
"As I said before, this reaction has nothing to do with heat," says Barbatti. The transformation works in a cold environment, as in comets and in terrestrial ices, where spontaneous HCN polymerization is most expected to occur.
The team has published their results, which help to understand the role of solar radiation on the origin of life, in the recent issue of Angewandte Chemie.
Source: http://feeds.sciencedaily.com/~r/sciencedaily/strange_science/~3/Q7w5RJO2C7M/130624104213.htm
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Samsung launches Magna Carta app, users will get Jay-Z album early and for free on July 4th
Samsung has launched the Magna Carta app, the vehicle through which one million Galaxy S 4, S III and Note II owners will be able to download Jay-Z's latest opus for free. Download it today, and Mr. Carter (Carter / Carta, geddit?) album will arrive on your handset on July 4th, three days ahead of the CD's global release. Users will also get behind-the-scenes footage, lyrics and track sharing options. It's available for free at the Play store, with the obvious caveat that it'll only work on the aforementioned trio of phones. After all, if you're having phone problems, he feels bad for you son, he's got 99 problems, but Samsung's patronage ain't one.
Filed under: Cellphones, Portable Audio/Video, Software, Samsung, Google
Via: MobileBurn
Source: Google Play
Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/O7jkeVtckOs/
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Chris Brown Accused Of Assault By Deanna Gines
Chris Brown Accused Of Assault By Deanna Gines
A woman named Deanna Gines, who incidentally wants to be an actress/model, has accused Chris Brown of assaulting her and said she may need surgery. Deanna Gines claims Chris Brown pushed her to the ground at the Heat Ultra Lounge in Anaheim, California after his performance earlier that evening at the Honda Center. The alleged ...
Chris Brown Accused Of Assault By Deanna Gines Stupid Celebrities Gossip Stupid Celebrities Gossip News
Source: http://stupidcelebrities.net/2013/06/chris-brown-accused-of-assault-by-deanna-gines/
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Sunday, June 23, 2013
Interview: what leaders of defunct 'gay conversion' group are planning
Leaders of Exodus International, which announced it is closing this week, are starting a new group aimed at finding common ground within conservative churches and fostering acceptance of all sexual orientations.?
Exodus International, a longtime leader in the Christian "gay conversion therapy" movement, is closing its doors, having concluded that trying to counsel people out of same-sex attractions doesn?t work and can do grave harm. The group?s president, Alan Chambers, issued a lengthy apology this week at the organization?s final conference.
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But the debate within the conservative Christian world over homosexuality is far from over, and it may well get sharper as the politics of gay rights ? especially gay marriage ? intensifies.?
Most of Exodus?s affiliates had already left before Mr. Chambers?s announcement and are expected to keep doing conversion therapy. A new umbrella group is already in place, the Restored Hope Network, which its website says is ?dedicated to restoring hope to those broken by sexual and relational sin, especially those impacted by homosexuality.? On Friday and Saturday, the group is having its first annual conference in Oklahoma City.
But some of Exodus?s leaders aren?t going away. They?re planning a new endeavor that they say accepts people as they are ? a reflection of changing views, particularly among younger Evangelicals, toward homosexuality and gay rights.
In interviews with the Monitor, two of Exodus?s leaders spoke of their own experiences with same-sex attraction, their abiding religious faith, and how they hope to find common ground in addressing social problems.
?Exodus has been a lightning rod ministry, and it?s been really one side of a debate, a raging debate, on issues related to sexuality,? says Chambers, speaking on the phone from his conference in Irvine, Calif.
?Our desire in the church is to be people of peace and to be known by our ability to be in relationship with and have conversations with all different types of people. And so we want to create opportunities and conferences and spaces where people can come together who have different opinions, and different worldviews, to talk about really complex issues.?
By ?church,? he says, he means the ?global? Christian church, not any particular denomination. His new, as-yet-unnamed, endeavor ?will be rooted in a desire to ?reduce fear,? he says. The website, still under construction, is ReduceFear.org.
Chambers hopes that people of faith, regardless of sexual orientation, can come together for the common good to combat social ills such as bullying. ?
"We?ve got to get to a different place in our culture than we are at today, certainly within the church,? he says. ?There are gay and lesbian people who are in the church, and there are people who have very different beliefs about that who are in the church.?
But he tries to steer clear of politics and has no position on same-sex marriage, saying it?s a ?distraction to the people we minister to.? ?
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Suicide bombings kill 5 people in Syrian capital
DAMASCUS, Syria (AP) ? Syrian activists and state media say at least five people have been killed in two suicide bombing attacks on security compounds in the capital, Damascus.
Nobody immediately claimed responsibility for Sunday's explosions, but they bore the hallmarks of al-Qaida linked groups that have joined forces with rebels fighting to oust President Bashar Assad.
The state-run news agency says three suicide bombers blew themselves up while trying to break into the Rukneddine police station, killing five people. SANA says three would-be suicide bombers also bombers tried to break into the Criminal Security Branch in the Bab Mousalla area but were caught by security forces before they could detonate their explosives.
Activists also say least 5 people were killed in the first attack.
Source: http://news.yahoo.com/suicide-bombings-kill-5-people-syrian-capital-151914907.html
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U.K. issues Google yet another privacy ultimatum
DEAR ABBY: I was taken away from my parents at 13 and placed into foster care, where I stayed until I aged out at 21. My biological mother is a drug addict who abandoned me to my father when I was 11. She never tried to contact me while I was in care.I am now 24 and she won't leave me alone. She sends Facebook messages that alternate between begging me to let her get to know me, and condemning me for being vindictive and not having forgiveness in my heart. Abby, this woman exposed me to drugs and all manner of seedy people and situations. ...
Source: http://news.yahoo.com/u-k-issues-google-yet-another-privacy-ultimatum-010031433.html
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