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Saturday, September 15, 2012
Friday, September 14, 2012
Living Without Audio CDs
During a recent apartment move, I became aware of how much stuff I had that was redundant. It was with great pleasure that I was able to dump a lot of it rather than paying guys to move it all across town -- again. Books and CDs were the principal weighty items I got rid of, along with a svelte cherry laminate IKEA CD rack that my girlfriend told me made my pad look old-fashioned.
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"Astronomical Unit," or Earth-Sun Distance, Gets an Overhaul
A new AU redefinition involves changing it to a single number rather than basing it on a somewhat baffling equation
Artist's concept of Mars opposition on December 24, 2007. The distances between the sun, the planets and the distant nebula are not to scale.
Image: NASA Mars Exploration Program
By Geoff Brumfiel of Nature magazine
Without fanfare, astronomers have redefined one of the most important distances in the Solar System. The astronomical unit (au) ? the rough distance from the Earth to the Sun ? has been transformed from a confusing calculation into a single number. The new standard, adopted in August by unanimous vote at the International Astronomical Union's meeting in Beijing, China, is now 149,597,870,700 meters ? no more, no less.
The effect on our planet?s inhabitants will be limited. The Earth will continue to twirl around the Sun, and in the Northern Hemisphere, autumn will soon arrive. But for astronomers, the change means more precise measurements and fewer headaches from explaining the au to their students.
The distance between the Earth and the Sun is one of the most long-standing values in astronomy. The first precise measurement was made in 1672 by the famed astronomer Giovanni Cassini, who observed Mars from Paris, France, while his colleague Jean Richer observed the planet from French Guiana in South America. Taking the parallax, or angular difference, between the two observations, the astronomers calculated the distance from Earth to Mars and used that to find the distance from the Earth to the Sun. Their answer was 140 million kilometers ? not far off from today?s value.
Until the last half of the twentieth century, such parallax measurements were the only reliable way to derive distances in the Solar System, and so the au continued to be expressed as a combination of fundamental constants that could transform angular measurements into distance. Most recently, the au was defined as (take a deep breath): ?the radius of an unperturbed circular Newtonian orbit about the Sun of a particle having infinitesimal mass, moving with a mean motion of 0.01720209895 radians per day (known as the Gaussian constant)?.
The definition cheered fans of German mathematician Carl Friedrich Gauss, whose constant sits at the heart of the whole affair, but it caused trouble for astronomers. For one thing, it left introductory astronomy students completely baffled, says Sergei Klioner, an astronomer at the Technical University of Dresden in Germany. But, more importantly, the old definition clashed with Einstein?s general theory of relativity.
As its name implies, general relativity makes space-time relative, depending on where an observer is located. The au, as formerly defined, changed as well. It shifted by a thousand meters or more between Earth?s reference frame and that of Jupiter?s, according to Klioner. That shift did not affect spacecraft, which measure distance directly, but it has been a pain for planetary scientists working on Solar System models.
The Sun posed another problem. The Gaussian constant is based on Solar mass, so the au was inextricably tied to the mass of the Sun. But the Sun is losing mass as it radiates energy, and this was causing the au to change slowly as well.
The revised definition wipes away the problems of the old au. A fixed distance has nothing to do with the Sun?s mass, and the meter is defined as the distance traveled by light in a vacuum in 1 / 299,792,458 of a second. Because the speed of light is constant in all reference frames, the au will no longer change depending on an observer?s location in the Solar System.
Redefining the au has been possible for decades ? modern astronomers can use spacecraft, radars and lasers to make direct measurements of distance. But ?some of them thought it was a little bit dangerous to change something,? says Nicole Capitaine, an astronomer at the Paris Observatory in France. Some feared the change might disrupt their computer programs, others held a sentimental attachment to the old standard. But after years of lobbying by Capitaine, Klioner and others, the revised unit has finally been adopted.
Source: http://rss.sciam.com/click.phdo?i=837b59c77f415118b89a084d3935ef10
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Quest Diagnostics Marks Ninth Year on Dow Jones Sustainability ...
MADISON, N.J., Sept. 14, 2012 /PRNewswire/ --?Quest Diagnostics Incorporated (NYSE: DGX), the world's leading provider of diagnostic testing, information and services, has again been named to the Dow Jones Sustainability World Index and North America Index. Quest Diagnostics is in its ninth year on the World Index (since 2004) and in its eighth on the North America Index (since 2005).
"All of us at Quest Diagnostics are proud to have again earned a place on the Dow Jones Sustainability Index," said Steve Rusckowski, Quest Diagnostics' President and Chief Executive Officer. "We take even greater pride in the commitments these rankings reflect ? to the patients we serve, our employees and their families, and the communities and environments where we work and live."
Launched in 1999, the DJSI are the first global indexes tracking the financial performance of the leading sustainability-driven companies worldwide. The DJSI enable investors to integrate sustainability considerations into their portfolios while providing an effective engagement platform for encouraging companies to adopt sustainable best practices. The result of the Corporate Sustainability Assessment provides an in-depth analysis of economic, environmental and social criteria, such as corporate governance, water-related risks and stakeholder relations, with a special focus on industry-specific risks and opportunities.
More information on the DJSI, including a list of all component companies, is available at: www.sustainability-indexes.com. To learn more about Quest Diagnostics' commitment to responsible corporate citizenship, and to view the company's latest Corporate Social Responsibility report, visit QuestCares.com.
About Quest Diagnostics
Quest Diagnostics is the world's leading provider of diagnostic testing, information and services that patients and doctors need to make better healthcare decisions. The company offers the broadest access to diagnostic testing services through its network of laboratories and patient service centers, and provides interpretive consultation through its extensive medical and scientific staff. Quest Diagnostics is a pioneer in developing innovative diagnostic tests and advanced healthcare information technology solutions that help improve patient care. Additional company information is available at QuestDiagnostics.com. Follow us at Facebook.com/QuestDiagnostics and Twitter.com/QuestDX.
Media: Barb Short / Caitlin McHugh ? 973-520-2800
Investor: Kathleen Valentine ? 973-520-2900
SOURCE Quest Diagnostics Incorporated
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Thursday, September 13, 2012
Sen. McCain praises ambassador killed in Libya, refuses to criticize Obama
Spinners and Winners
We caught up with Sen. John McCain, R-Ariz., to talk to him about the attacks in Benghazi, Libya and Cairo. His tone could not have been more different than those of Republican presidential hopeful Mitt Romney. Firstly, McCain offered a moving tribute to Ambassador Chris Stevens, who he got to know well on his various trips to Libya. Stevens and three other Americans were killed during an assault on the American consulate in Benghazi Tuesday evening.
"Chris Stevens is one of the finest people I've ever known in my life," McCain said. "He loved the Libyan people. They loved him. He and I were down there on election night and people were saying, 'Thank You America.'"
"I guarantee you the one thing Chris Stevens did not want is for us to abandon Libya."
McCain also met Stevens in Benghazi during the Libyan revolution that ended in the death and overthrow of dictator Moammar Gadhafi.
"He was living in a hotel room in Benghazi under threat of death every day," McCain said. "He was a brave and wonderful man and he was down to earth. They loved him."
McCain, who is ranking member of the Senate armed services committee, said that Libya is a dangerous place, but emphasized that the "overwhelming majority" of Libyans voted for a moderate government and did not rise up with al Qaeda and terrorists. That is, the attacks on the consulate are an ill representation of the Libyan people.
"It was a terrorist attack. It wasn't the result of a mob being excited. It was a group of jihadists who were well-armed and well-trained and well-equipped, and they decided to attack the consulate in Benghazi and try and kill people. That's far different from what happened in Cairo, where a mob was whipped into a frenzy by these people who were talking about this so-called movie that insults Mohammed."
As for the Obama administration's handling of the crisis, McCain was almost entirely positive. "I think it was fine. By the way, Secretary of State Hilary Clinton gave a marvelous statement today," said McCain. He did not offer such praise for the Romney campaign's statements on the events.
Check out this week's Spinners and Winners for more, including the 2008 Republican presidential candidate's debate advice for Mitt Romney.
ABC News' Gregory Simmons-Lemos contributed to this report.
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Research reveals responses of genes in females to sex
Wednesday, September 12, 2012
Sex can trigger remarkable female responses including altered fertility, immunity, libido, eating and sleep patterns - by the activation of diverse sets of genes, according to research from the University of East Anglia.
Publishing today in the journal Proceedings of the Royal Society B, the researchers studied how female Drosophila melanogaster - or fruit flies ? respond to mating.
They discovered that a single protein found in semen generates a wide range of responses in many genes in females, which become apparent at different times and in different parts of the female's body following mating.
The findings could in principle be akin to responses in many animals, including humans, where sperm and semen is released inside the female's body during sex.
Lead researcher Prof Tracey Chapman, from UEA's school of Biological Sciences, said: "It's already known that seminal fluid proteins transferred from males during mating cause remarkable effects in females ? including altered egg laying, feeding, immunity, sleep patterns, water balance and sexual receptivity.
"We tested here the effects of one enigmatic seminal fluid protein, known as the 'sex peptide', and found it to change the expression of a remarkable array of many genes in females ? both across time and in different parts of the body.
"There were significant alterations to genes linked to egg development, early embryogenesis, immunity, nutrient sensing, behavior and, unexpectedly, phototransduction ? or the pathways by which they see.
"It showed that the semen protein is a 'master regulator' ? which ultimately means that males effectively have a direct and global influence on the behaviour and reproductive system of the female. Such effects may well occur across many species.
"An additional and intriguing twist is that the effects of semen proteins can favour the interests of males whilst generating costs in females, resulting in sexual conflict.
"For example, there can be a tug-of-war, where males employ semen proteins to ensure that females make a large investment in the current brood ? even if that doesn't suit the longer term interests of females."
###
University of East Anglia: http://comm.uea.ac.uk/press
Thanks to University of East Anglia for this article.
This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.
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Source: http://www.labspaces.net/123406/Research_reveals_responses_of_genes_in_females_to_sex
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The Codemasters
Three children are targeted by a secret organization and their only hope lies in three mutants. Will they get away or will the codes fall into the wrong hands.
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This topic is an Out Of Character part of the roleplay, ?The Codemasters?. Anything posted here will also show up there.Topic Tags:
Forum for completely Out of Character (OOC) discussion, based around whatever is happening In Character (IC). Discuss plans, storylines, and events; Recruit for your roleplaying game, or find a GM for your playergroup.This is the auto-generated OOC topic for the roleplay "The Codemasters"
You may edit this first post as you see fit.
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ceh12 - Member for 0 years
Didn't you make this exact roleplay like a week ago?
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Lifecharacter - Member for 1 years
Oh so I did must have forgot about it lol
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ceh12 - Member for 0 years
Hmm... ahuh... hmmm... Yup, I've finally decided that this RP is intresting... I'd like to reserve the Lightning Mutant if possible...
I was born to fight for those I love
To see them safe and happy
To protect them from harm
And to keep the darkness at bay
To slay those who dare harm mine
To defeat the monsters that rove my lands
And to shield them from the darkness... that hides inside me...
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BlueWind_22 - Member for 1 years
Hey, Ceh12, it's your old buddy SM. Haha, can i reserve the fire mutant please?
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SMinSC - Member for 0 years
Post a reply
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