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Friday, May 24, 2013
Thursday, May 23, 2013
Abundance and distribution of Hawaiian coral species predicted by model
Wednesday, May 22, 2013
Researchers from the University of Hawaii ? Manoa (UHM) School of Ocean and Earth Science and Technology (SOEST) developed species distribution models of the six dominant Hawaiian coral species around the main Hawaiian Islands including two species currently under consideration as threatened or endangered. They found the order of coral abundance (from highest to lowest) around the main Hawaiian Islands to be Porites lobata, Montipora patula, Pocillopora meandrina, Montipora capitata, Porites compressa, and Montipora flabellata.
Environmental factors (wave energy, shape of the seafloor, water clarity, depth, rugosity (roughness of the seafloor), geological island age, and organic sediment content) are known to influence Hawaiian reefs. However, this is the first study to systematically examine the influence of these factors on the distribution and abundance of coral species across the entire seascape of shallow reefs in the main Hawaiian Islands (MHI).
"Average wave height and maximum wave height were the most influential variables explaining coral abundance in the Hawaiian Islands," reported Erik Franklin, lead author of the study and Assistant Research Professor at the UHM Hawaii Institute of Marine Biology. "Our models also identified relationships between coral cover and island age, depth, sunlight, rugosity, slope, and aspect (direction a slope faces)."
In general, coral cover was predicted to be highest in primarily wave-sheltered coastlines and embayments. Reefs with highest cover were concentrated in Kaneohe Bay on Oahu; the wave-sheltered reefs of Molokai, Lanai, Maui, and Kahoolawe; and the Kohala coast of Hawaii.
To construct the species distribution and abundance models, researchers integrated field surveys for corals (data provided by the US National Park Service and US National Oceanic and Atmospheric Administration) with environmental data of wave exposure (data provided by UHM Department of Ocean and Resources Engineering), benthic geomorphology, and sunlight from 2000 to 2009.
Regional-scale mapping of coral species from these models provide a framework for population modeling and marine spatial planning of Hawaiian coral reefs. The geographic characterization of coral reefs would benefit greatly from the improved coral distribution and abundance information generated from coral distribution models. Data from these models can be incorporated into marine conservation plans or used for threat assessments to reefs.
"For example," Franklin says, "our results were recently used in the management plan review process of the Hawaiian Islands Humpback Whale National Marine Sanctuary as they considered the distribution and abundance of animals other than whales."
One advantage of this integrative, modeling approach is that researchers are able to consider a broader range of areas than field surveys alone and, therefore, can provide a truer picture of total abundance. "We were most surprised at the high relative abundance of Montipora patula which is currently under consideration for listing as a threatened or endangered species," reported Franklin. Montipora flabellata, the other coral species under consideration as a threatened or endangered species, was not as abundant as the other five species.
Franklin and colleagues are in the process of extending the modeling approach to include additional marine species in Hawaii such as reef fish and include additional environmental variables to try to improve the predictive capacity of the models. Ideally the results will continue to inform marine resource management in the Hawaiian Islands.
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E C Franklin, P L Jokiel, M J Donahue (2013). Predictive modeling of coral distribution and abundance in the Hawaiian Islands. Marine Ecology Progress Series, 481:121-132; doi: 10.3354/meps10252.
University of Hawaii ? SOEST:
Thanks to University of Hawaii ? SOEST for this article.
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Hamilton lets sleeping dogs lie - and snore
By Alan Baldwin
MONACO (Reuters) - Lewis Hamilton made his point and Roscoe, his pampered pet bulldog, promptly proved him right at the Monaco Grand Prix on Wednesday.
Positioning, the 2008 Formula One world champion told British reporters gathered round him in the Mercedes harbourside motorhome, is everything in Monaco.
The Briton was referring to the special skills required to win the most glamorous and glittering race on the calendar but Roscoe demonstrated that positioning was important in other ways as well.
Nestled with his head on Hamilton's lap, the puppy stretched out comfortably on the bench alongside and started to snore - loudly.
"He was out late last night," said Hamilton, smiling as he completely lost the thread of the conversation amid general laughter.
"He does it all the time. When I go to bed, he sits next to the bed or on it, and that's how he snores."
Hamilton - who has a colorful new helmet for Monaco with a cartoon of himself, Roscoe and American pop singer girlfriend Nicole Scherzinger together in a car - could also be sitting pretty this weekend if Mercedes can repeat their qualifying form of the past three races.
The team are chasing their fourth pole position in a row, with Hamilton's German team mate Nico Rosberg looking for a hat-trick.
In Spain earlier this month, the pair swept the front row but struggled with the tires in the race. Hamilton went from second to 12th and was lapped but Monaco is kinder on the tires and far harder for drivers to overtake.
"Positioning is everything here and if we can get on the front row then that will put us in good stead for the race," said Hamilton.
"In 2007 I was in second and I couldn't get past Fernando (Alonso). Last year no-one could get past (Mark) Webber, it was just a train, so you can create a train here.
"The best chance is when you get on pole position. (Spain) was my best chance to get a win and we didn't do it. This is another chance, another opportunity to do that."
HUGE REACTION
Mercedes were mystified after Barcelona about why their tires lost performance so quickly, with the team looking at everything from procedures to how the drivers handled the tires. Hamilton was optimistic that progress had been made.
"There has been a huge reaction from the guys to the result. Everyone is working as hard as they can to improve and understand the tires," he said.
"We still need to experiment, to try different pressures, different temperatures and all those kind of things. We just find the right path ourselves and hopefully we will find that sooner rather than later."
Hamilton has had two third places in five races, already much better than many had predicted when he left McLaren at the end of last season for a team struggling to be competitive.
However, such had been Mercedes' improvement that it came as a real shock to struggle so much in the first race back in Europe after the long haul rounds in Asia and the Middle East.
"We were on a bit of a high," he said. "To see us then go back that far was definitely a huge surprise and put us on the back foot a little...but I feel positive about this weekend, I'm re-energized, refocused and ready for another challenge.
"Spain could easily be repeated if we get it wrong, although I don't think it's going to happen because we have learned, and we are learning and improving. We went a direction in the last race with the car and tires that didn't help.
"The problems we had in the previous races weren't too big, so we have taken a step back and gone in a different direction."
(Editing by Mark Meadows)
Source: http://news.yahoo.com/hamilton-lets-sleeping-dogs-lie-snore-170428222.html
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What are some good Self-Improvement books? - ClutchFans
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Member Since: Jan 2012 Posts: 2,176 Member: #50149 |
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Can you guys please recommend some good Self-Improvement books? Thanks
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How to Be Invisible by J.J Luna. __________________ Basketball is a team sport. The Rockets need team players, not glorified stat collectors. Morey's methodology is right. In Morey I trust. |
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The Power of Now - really helped me through some tough times. __________________ Manchester United...Houston Rockets...Tennessee Titans...Anaheim Ducks...Anaheim Angels "This may sound morbid and mean, but I'll choke a baby if we get another pick 14! I swear it!" - Dubwerth |
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What are some natural remedies to depression and suicidal thoughts? Taking crazy pills the rest of my life is not an option.
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Think and Grow Rich by Napolean Hill |
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Is there a more stereotypically formulaic and unhelpful thing than a self-help book? Do ppl really try these? |
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It's fairly well documented that prolonged stress will shorten your life. It's not even debatable. Few things in phycology have a stronger correlation than stress and life expectancy. Here's a book that outlines it. The author uses this method for mild to even manic depressant people that need medication. It's working great for me to reduce my stress levels. http://www.amazon.com/Feeling-Good-N...s=feeling+good btw, here is a cliff notes version. If it resonates with you, read the above book. http://lifehacker.com/5980491/try-th...-reduce-stress |
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i'm not one that owns a ton of books, but i own this and need to pick it back up. never read it. was a bit tedious, but i need to give it another shot. |
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That said, I skipped the last half of the book because it deals more with stuff that doesn't pertain to me (like being suicidal). |
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Kerry: US, allies, ready to step up aid rebels
AMMAN, Jordan (AP) ? The United States and its Arab and European allies will step up their support for Syria's opposition to help them "fight for the freedom of their country" if President Bashar Assad's regime doesn't engage in peace talks in good faith, U.S. Secretary of State John Kerry vowed Wednesday.
Kerry allowed that President Barack Obama won't send American troops to Syria. But he made clear that more aid to the rebels would be coming if the effort fails.
"In the event that we can't find that way forward, in the event that the Assad regime is unwilling to negotiate Geneva in good faith, we will also talk about our continued support, growing support for opposition in order to permit them to continue to fight for the freedom of their country," Kerry said, speaking to reporters ahead of a June conference in Geneva dedicated to finding strategies to end Syria's two-year civil war based on a framework that would install a transitional government.
Obama "has also made it clear that he intends to support the broad-based opposition, and he has taken no options off table with respect to how that support may be provided, or what kind of support that might be," the secretary told reporters at news conference with Jordanian Foreign Minister Nasser Judeh.
Kerry also warned Iran and the militant Hezbollah movement to stop providing assistance to Assad, saying such activity "perpetuates the regime's campaign of terror against its own people."
"We have to hope that Bashar Assad and his regime will understand the meaning of that and the Iranians and others will understand the meaning of that," Kerry said. "The president will keep those options available to him short of American forces on ground."
To that end, an administration official in Washington said the White House would soon notify Congress about an expanded package of non-lethal assistance to the Syrian rebels.
Details of the aid package are still being finalized, according to the official, who was not authorized to discuss the expanded aid publicly and insisted on anonymity. But, the package is likely to include vehicles and communications gear, the official said. It is not expected to include night vision goggles or body armor, underscoring the cautious approach the U.S. has taken regarding military-style assistance to the opposition.
As Kerry and his counterparts arrived at the meeting venue in Amman, about 250 pro-Assad demonstrators blocked the main entrance.
The protesters, a mix of Jordanians and Syrians, chanted "Death to America," and, "Go home, Kerry we don't want you here."
At the news conference Kerry and Judeh both stressed that the goal is to get the Syrian government and opposition into political transition talks that could begin as early as next month in Geneva.
Without that, violence will continue and the death toll from the conflict will continue to rise.
"Let's assume there is no Geneva 2," Kerry said. "Let's assume we don't come together as community of nations to try to find a peaceful process. What will happen? What will happen is an absolute guarantee that violence will continue and the world will be standing on the sidelines doing nothing constructive to try to end that violence. That's unacceptable."
The comments came a day after a Senate panel voted to provide weapons to the rebels, the first time American lawmakers have endorsed the aggressive U.S. military step of arming the opposition.
With a degree of trepidation, the Foreign Relations Committee voted 15-3 for a bill that would provide lethal assistance and military training to vetted rebel groups, and would slap sanctions on anyone ? such as Iran or Russia ? who sells oil or transfers arms to the Assad regime. The measure would also establish a $250 million fund to aid in the transition if and when Assad falls.
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Associated Press writers Julie Pace and Matthew Lee in Washington and Jamal Halaby in Amman contributed to this report.
Source: http://news.yahoo.com/kerry-us-allies-ready-step-aid-rebels-150432436.html
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Wednesday, May 22, 2013
Tuesday, May 21, 2013
RNA capable of catalyzing electron transfer on early earth with iron's help, study says
RNA capable of catalyzing electron transfer on early earth with iron's help, study says
Monday, May 20, 2013A new study shows how complex biochemical transformations may have been possible under conditions that existed when life began on the early Earth.
The study shows that RNA is capable of catalyzing electron transfer under conditions similar to those of the early Earth. Because electron transfer, the moving of an electron from one chemical species to another, is involved in many biological processes ? including photosynthesis, respiration and the reduction of RNA to DNA ? the study's findings suggest that complex biochemical transformations may have been possible when life began.
There is considerable evidence that the evolution of life passed through an early stage when RNA played a more central role, before DNA and coded proteins appeared. During that time, more than 3 billion years ago, the environment lacked oxygen but had an abundance of soluble iron.
"Our study shows that when RNA teams up with iron in an oxygen-free environment, RNA displays the powerful ability to catalyze single electron transfer, a process involved in the most sophisticated biochemistry, yet previously uncharacterized for RNA," said Loren Williams, a professor in the School of Chemistry and Biochemistry at the Georgia Institute of Technology.
The results of the study were scheduled to be published online on May 19, 2013, in the journal Nature Chemistry. The study was sponsored by the NASA Astrobiology Institute, which established the Center for Ribosomal Origins and Evolution (Ribo Evo) at Georgia Tech.
Free oxygen gas was almost nonexistent in the Earth's atmosphere more than 3 billion years ago. When free oxygen began entering the environment as a product of photosynthesis, it turned the earth's iron to rust, forming massive banded iron formations that are still mined today. The free oxygen produced by advanced organisms caused iron to be toxic, even though it was ? and still is ? a requirement for life. Williams believes the environmental transition caused a slow shift from the use of iron to magnesium for RNA binding, folding and catalysis.
Williams and Georgia Tech School of Chemistry and Biochemistry postdoctoral fellow Chiaolong Hsiao used a standard peroxidase assay to detect electron transfer in solutions of RNA and either the iron ion, Fe2+, or magnesium ion, Mg2+. For 10 different types of RNA, the researchers observed catalysis of single electron transfer in the presence of iron and absence of oxygen. They found that two of the most abundant and ancient types of RNA, the 23S ribosomal RNA and transfer RNA, catalyzed electron transfer more efficiently than other types of RNA. However, none of the RNA and magnesium solutions catalyzed single electron transfer in the oxygen-free environment.
"Our findings suggest that the catalytic competence of RNA may have been greater in early Earth conditions than in present conditions, and our experiments may have revived a latent function of RNA," added Williams, who is also director of the RiboEvo Center.
This new study expands on research published in May 2012 in the journal PLoS ONE. In the previous work, Williams led a team that used experiments and numerical calculations to show that iron, in the absence of oxygen, could substitute for magnesium in RNA binding, folding and catalysis. The researchers found that RNA's shape and folding structure remained the same and its functional activity increased when magnesium was replaced by iron in an oxygen-free environment.
In future studies, the researchers plan to investigate whether other unique functions may have been conferred on RNA through interaction with a variety of metals available on the early Earth.
In addition to Williams and Hsiao, Georgia Tech School of Biology professors Roger Wartell and Stephen Harvey, and Georgia Tech School of Chemistry and Biochemistry professor Nicholas Hud, also contributed to this work as co-principal investigators in the Ribo Evo Center at Georgia Tech.
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Georgia Institute of Technology: http://www.gatech.edu
Thanks to Georgia Institute of Technology 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.
This press release has been viewed 46 time(s).
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Sports briefs: Nadal dominates Federer to win Italian Open | The Salt ...
Tennis ? After all these years, Rafael Nadal still knows how to dominate Roger Federer.
In the 30th meeting between the tennis greats, Nadal controlled the final from the start and won 6-1, 6-3 Sunday for his seventh Italian Open title in Rome.
Nadal improved to 20-10 in his career against Federer.
In the women?s final, Serena Williams won her fourth consecutive title of the year in impressive fashion, defeating third-seeded Victoria Azarenka 6-1, 6-3. The top-ranked American will go to Paris on a career-best 24-match winning run.
Indianapolis 500 will sport full field
Auto Racing ? One day after getting bumped from the top 24 starting spots for the Indianapolis 500, Josef Newgarden and Graham Rahal posted the two fastest times on the second and final day of qualifying at the historic 2.5-mile oval.
Newgarden will start 25th, the inside of the ninth row, after posting a four-lap average of 225.731 mph. Rahal will be next to him after going 225.007.
The first nine drivers out on the track Sunday all qualified for the race, assuring race organizers of a full 33-car field. The only one left out of the race Mexico?s Michel Jourdain Jr., who did not make a qualifying attempt Sunday.
story continues below
Leipheimer says he?s retired
CYCLING ? Rowland Hall graduate Levi Leipheimer says he retired from professional cycling when his six-month ban for doping violations ended March 1 and he was unable to sign with a new team.
Leipheimer told The Press Democrat of Santa Rosa, Calif., of his decision Sunday. His comments came after watching the final stage of the Tour of California, an event he won three straight times from 2007-2009.
The 39-year-old Leipheimer, from Butte, Mont., was fired by the Omega Pharma-Quick Step team in October after confessing to doping as part of the investigation that brought down Lance Armstrong.
? Tejay van Garderen stayed out of trouble to seal his first professional stage race title, winning the Tour of California in front of BMC Racing Team?s home fans. The American cruised through the smooth and scenic final stage from San Francisco to Santa Rosa to edge Australia?s Michael Rogers for the overall title by 1 minute, 47 seconds.
From wire reports
Copyright 2013 The Salt Lake Tribune. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Source: http://www.sltrib.com/sltrib/sports/56334448-77/title-federer-nadal-final.html.csp
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Friday, May 17, 2013
Lenovo K900 now available in China, more markets to follow
Pricing set in retail and online at RMB 3,299 for Chinese launch
We've been getting looks at the latest high-end Intel device from Lenovo, the K900, since all the way back at CES and it's finally ready to make its debut in China. Starting today both online and in retail stores, the K900 will go up for sale for 3,299 Yuan (about $536). If you'll recall back to our previous hands-on with the device, the K900 has a very flashy stainless steel construction with a couple of cool color options, and has many of the high-end specs you'd expect. We're looking at an Intel Atom Z2580 dual-core 2GHz processor, 2GB of RAM, a 5.5-inch 1080P display and 13MP (f/1.8) Sony Exmor camera sensor. For software, Lenovo is shipping the K900 with Android 4.2 on-board, which is a good sign, along with its own set of customizations integrated.
Lenovo says that the launch is just in China for now, where it has done pretty well in the past, but that there are additional international markets that will see the device as we move through the summer. Given Lenovo's previous device launches, we still wouldn't expect to see this one head to the U.S. in any capacity.
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Source: http://feedproxy.google.com/~r/androidcentral/~3/Bk5Dk-t-m4Y/story01.htm
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