Sunday, January 29, 2012

Ex-Palm chief leaves HP after WebOS move (Reuters)

(Reuters) ? Jon Rubinstein, who was instrumental in crafting Apple Inc's iPod music player, has left Hewlett Packard Co after two years on the job there.

Rubinstein was CEO of smartphone maker Palm when that company was acquired by HP in 2010. He last held a product-innovation role within HP's Personal Systems Group headed by Todd Bradley.

"Jon has fulfilled his commitment to HP," a HP spokesman said.

Rubinstein is still a board member at e-commerce company Amazon.com.

Last year HP, the largest U.S. technology company by revenue, announced it was halting its TouchPad line of tablets and any other devices based on WebOS, the mobile software it acquired when it bought Palm.

In December, HP said it would open its WebOS mobile operating system to developers and companies, potentially taking on Google Inc's free Android platform.

(Reporting By Poornima Gupta; editing by John Wallace)

Source: http://us.rd.yahoo.com/dailynews/rss/tech/*http%3A//news.yahoo.com/s/nm/20120127/tc_nm/us_hewlettpackard

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Friday, January 27, 2012

Louie @Mantia ? one of the best designers ever. Themed wallpaper, iPhone icons. Lego, Nintendo, Muppets and more.

smartcover banners v3 047 Louie @Mantia   one of the best designers ever. Themed wallpaper, iPhone icons. Lego, Nintendo, Muppets and more.

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Louie Mantia has always been one of my favorite iPhone app icon designers. His designs for Winterboard were always the best when the first iPhone themes were coming out. When I look at these icons, it takes me back to my first days with an iPhone. ?I also love his Adobe icons on my Mac.

He recently put out a new lego wallpaper for Mac, iPhone and iPad. It sits among Mario, Zelda, Kermit and other gorgeous designs.

Visual designer Louie Mantia, has created a truly impressive collection of themed wallpapers for iPhone and iPad. His bold Lego brick line-up includes blue, green, red, yellow, dark grey and grey after downloading. I liked the Lego pattern more as a lock screen than as a home screen.

Mantia is the kind of designer that creates art to the tune of my heart.

You can find over 60 designs tooled by Mantia including unique expanded desktop versions, with one that?s definitely worth a look by Super Mario Bros. fans. Did I mention that these are all free?

Make sure to go check them out.

Source: iPhonesaver

Source: http://www.zagg.com/community/blog/louie-mantia-one-of-the-best-designers-ever-themed-wallpaper-iphone-icons-lego-nintendo-muppets-and-more/

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iPhone, iPad app rewards being a couch potato (AP)

LOS ANGELES ? Want to earn stuff by watching TV? An free app for that is set to debut Wednesday.

When you tap the screen, Viggle's software for iPhones and iPads listens to what's on, recognizes what you're watching and gives you credit at roughly two points per minute. It even works for shows you've saved on a digital video recorder.

Rack up 7,500 points, and you'll be rewarded with a $5 gift card from retailers such as Burger King, Starbucks, Apple's iTunes, Best Buy and CVS, which you can redeem directly from your device.

With some back-of-the-napkin math, you can figure that it would take three weeks of watching TV every night for three hours to earn enough for a latte at Starbucks.

But the company plans to offer bonus points for checking into certain shows such as "American Idol" and 1,500 points for signing up. You can also get extra points for watching an ad on your device. The beta version awarded 100 points for watching a 15-second ad from Verizon Wireless.

"Viggle is the first loyalty program for TV," said Chris Stephenson, president of the company behind Viggle, Function (X) Inc. "We're basically allowing people to get rewards for doing something they're doing already and that they love to do."

The idea behind Viggle is that by giving people an added reason to watch TV, the size of the audience will increase, thereby allowing makers of shows to earn more money from advertisers. Advertisers such as Burger King, Pepsi and Gatorade have also agreed to pay to have point-hungry users watch their ads on a mobile device.

In exchange, users earn points, which Viggle converts into real value by buying gift cards at a slight discount from retailers.

If the company gets the point-count economy right, it can end up making more money from advertisers and networks than it gives away in rewards.

The app will also give the company valuable insight into who is watching what, as redeeming rewards requires putting in your age, gender, email address and ZIP code.

"It really shows what social TV is going to evolve into," said Michael Gartenberg, a technology analyst at research firm Gartner. "For folks behind the scenes, this is a great way of seeing who really is watching."

The company hopes that user activity will grow by word of mouth, especially by offering a 200-point bonus to people who successfully get their friends to try out the service.

The app makes its debut in Apple Inc.'s app store on Wednesday. Versions for Android devices and computers are in the works.

The company has put in some safeguards. You must watch a show at least 10 minutes to earn bonus points. And you can't watch the same ad over and over again to earn more points; there's a one-ad-view-per-person rule.

Function (X) is owned and led by entertainment entrepreneur Robert F.X. Sillerman, who once owned a big stake in "American Idol" owner CKx Inc. That gives the company deep and broad connections in the entertainment business.

Function (X) has brought in $100 million in investment capital, and its stock trades on the Pink Sheets, a platform that allows people to buy shares but doesn't require the company release its financial results. Function (X) currently has a market value of about $1 billion.

.

Source: http://us.rd.yahoo.com/dailynews/rss/applecomputer/*http%3A//news.yahoo.com/s/ap/20120125/ap_on_hi_te/us_tec_rewards_for_watching_tv

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Tuesday, January 24, 2012

New understanding of chronic pain

ScienceDaily (Jan. 22, 2012) ? Millions of people worldwide suffer from a type of chronic pain called neuropathic pain, which is triggered by nerve damage. Precisely how this pain persists has been a mystery, and current treatments are largely ineffective. But a team led by scientists from The Scripps Research Institute, using a new approach known as metabolomics, has now discovered a major clue: dimethylsphingosine (DMS), a small-molecule byproduct of cellular membranes in the nervous system. In their new study, the scientists found that DMS is produced at abnormally high levels in the spinal cords of rats with neuropathic pain and appears to cause pain when injected. The findings suggest inhibiting this molecule may be a fruitful target for drug development.

"We think that this is a big step forward in understanding and treating neuropathic pain, and also a solid demonstration of the power of metabolomics," said Gary J. Patti, a research associate at Scripps Research during the study, and now an assistant professor of genetics, chemistry, and medicine at Washington University in St. Louis. Patti is a lead author of the report on the study, which appeared online in the journal Nature Chemical Biology on January 22, 2012.

Scientists who want to understand what makes diseased cells different from healthy cells have often looked for differences in levels of gene expression or cellular proteins -- approaches known respectively as genomics and proteomics. Metabolomics, by contrast, concerns differences in the levels of small-molecule metabolites, such as sugars, vitamins, and amino acids, that serve as the building blocks of basic cellular processes. "These are the molecules that are actually being transformed during cellular activity, and tracking them provides more direct information on what's happening at a biochemical level," Patti said.

Metabolomics is increasingly used to find biochemical markers or signatures of diseases. One of the most relied-upon "metabolome" databases, METLIN, was set up at Scripps Research in 2005, and now contains data on thousands of metabolites found in humans and other organisms. However, in this case the research team hoped to do more than find a metabolic marker of neuropathic pain.

"The idea was to apply metabolomic analysis to understand the biochemical basis of the neuropathic pain condition and reveal potential therapeutic targets," said Gary Siuzdak, a senior investigator in the study, who is professor of chemistry and molecular biology and director of the Scripps Research Center for Metabolomics. "We call this approach 'therapeutic metabolomics'."

The scientists began with a standard model of neuropathic pain in lab rats. Patti, Siuzdak, and their colleagues sampled segments of a previously injured tibial leg nerve triggering neuropathic pain, as well as the rats' blood plasma and tissue from the rats' spinal cords. The scientists then determined the levels of metabolites in these tissues, and compared them to levels from control animals.

Unexpectedly, the scientists found that nearly all the major abnormalities in metabolite levels were present not in the injured leg nerve fiber, nor in blood plasma, but in tissue from the "dorsal horn" region of the spinal cord which normally receives signals from the tibial nerve and relays them to the brain. "After the nerve is damaged, it degrades and rebuilds itself at the site of the injury, but remodeling also occurs, possibly over a longer period, at the terminus of the nerve where it connects to dorsal horn neurons," Patti said.

Next, the researchers set up a test to see which of the abnormally altered metabolites in dorsal horn tissue could evoke signs of pain signaling in cultures of rat spinal cord tissue. One metabolite stood out -- a small molecule that didn't appear in any of the metabolome databases. Patti eventually determined that the molecule was DMS, an apparent byproduct of cellular reactions involving sphingomyelin, a major building block for the insulating sheaths of nerve fibers. "This is the first characterization and quantitation of DMS as a naturally occurring compound," Patti noted. When the scientists injected it into healthy rats, at a dose similar to that found in the nerve-injured rats, it induced pain.

DMS seems to cause pain at least in part by stimulating the release of pro-inflammatory molecules from neuron-supporting cells called astrocytes. Patti, Siuzdak, and their colleagues are now trying to find out more about DMS's pain-inducing mechanisms -- and are testing inhibitors of DMS production that may prove to be effective treatments or preventives of neuropathic pain.

"We're very excited about this therapeutic metabolomics approach," said Siuzdak. "In fact, we're already involved in several other projects in which metabolites are giving us a direct indication of disease biochemistry and potential treatments."

Oscar Yanes, a postdoctoral fellow in the Siuzdak laboratory, was Patti's co-lead author of the study, "Metabolomics Implicates Dysregulated Sphingomyelin Metabolism in the Central Nervous System During Neuropathic Pain." The other contributors were Leah Shriver and Marianne Manchester of the University of California, San Diego (or UC San Diego) Skaggs School of Pharmacy and Pharmaceutical Sciences; Jean-Phillipe Courade, then at Pfizer, now at UCB Pharma in Belgium; and Ralf Tautenhahn of the Siuzdak laboratory.

Funding for the research was provided in part by the U.S. National Institutes of Health and the California Institute of Regenerative Medicine.

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Source: http://feeds.sciencedaily.com/~r/sciencedaily/~3/LiDHfRdCIWQ/120122152447.htm

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Saturday, January 21, 2012

Five Europeans killed in attack in remote Ethiopia (Reuters)

ADDIS ABABA (Reuters) ? Five European tourists were killed, and two tourists and two Ethiopians were kidnapped, in an attack by gunmen in northern Ethiopia's remote Afar region, the Ethiopian government said on Wednesday.

Government spokesman Bereket Simon told Reuters two Germans, two Hungarians and an Austrian died in the dawn attack in an arid area prone to banditry where separatist rebels have operated.

On Wednesday afternoon, eleven tired-looking survivors still dressed in trekking clothing arrived by plane in the capital, Addis Ababa.

Several hid their faces from the awaiting television cameras. One was pushed through the airport in a wheelchair, his knees and arms heavily bruised, before the group was whisked away in diplomatic vehicles.

There was confusion over who had been wounded in the attack, and their nationalities. Addis Ababa initially said a Hungarian and an Italian were wounded, but Rome later denied one of its citizens had been hurt.

Hungarian authorities confirmed one of their nationals was wounded. Belgium's Foreign Ministry spokesman told Reuters a Belgian and a national from another country who lived in Brussels were injured and had been taken to a hospital in Mekele, northeastern Ethiopia's biggest city.

Afar is a barren corner in the Horn of Africa country, and one of the earth's harshest terrains. The highest average annual temperature ever recorded was in Afar's Danakil Depression at 94 degrees Fahrenheit (34.4 Celsius).

ERITREA SCOFFS AT BLAME GAME

Ethiopia quickly blamed its neighbor and arch-foe Eritrea for the attack, saying it had trained and armed the gunmen responsible. Ethiopia also blamed an Afar rebel movement for kidnapping five Westerners in the region in 2007.

Eritrea's envoy to the African Union, Girma Asmerom, was swift to reject the Ethiopian accusation, telling Reuters: "This is pathetic, an absolute lie."

The Afar province's rock-strewn hills give way to vast deserts below sea level, and dry river-beds and acacia thorn-trees dot the landscape. Banditry is widespread in a region once described by the late British explorer Wilfred Thesiger as a "veritable land of death."

Foreigners who venture out into the area usually include researchers, aid workers and some 500 adventure tourists each year visiting geographical wonders like the Danakil Depression, with ancient salt mines and volcanoes.

"The attack occurred at 5 a.m. on Tuesday, in which Eritrean-trained groups also kidnapped four. Two of them are foreigners, one is a driver and the other a policeman," Bereket said.

Ethiopian state television said the victims were part of a 27-member party that also included U.S., Australian and Belgian nationals.

"The group may have consisted of two groups of travelers consisting of nationals from a series of European countries, most likely including Austria," Austria's Foreign Ministry spokesman Peter Launsky-Tieffenthal told Reuters.

A German Foreign Ministry spokesman said Berlin was working with its embassy in Addis Ababa to clarify what had happened.

A German media report said the group of tourists had been close to the Erta Ale volcano, one of Ethiopia's most active.

BITTER ENEMIES

Ethiopia said the four hostages might have been taken across the frontier into Eritrea.

"On previous occasions, when tourists have been kidnapped, the Eritrean government had tried to use the prisoners as a bargaining chip in its diplomatic activities," Ethiopia's Foreign Ministry said in a statement

In 2007, gunmen seized five Europeans and eight locals in Afar. The Europeans were handed to the Eritrean authorities less than two weeks later and Britain said Asmara had helped secure their release. The eight locals were freed a few weeks later.

Ethiopia and Eritrea fought a 1998-2000 border war that killed some 70,000 people, and the dispute still festers.

Addis Ababa routinely accuses Asmara of supporting Ethiopian separatist groups, while Eritrea says the accusations are lies designed to tarnish its reputation.

"It has become a trend for Ethiopia to fabricate sensational news against Eritrea whenever the summit is nearing," Girma told Reuters, referring to an African Union summit which begins in Addis Ababa next week.

Ethiopia accused Eritrea of plotting to bomb targets and disrupt an AU meeting in January last year.

(Additional reporting by Fredrik Dahl in Vienna, Krisztina Than in Budapest and Ben Deighton in Brussels; Writing by David Clarke and Richard Lough)

Source: http://us.rd.yahoo.com/dailynews/rss/africa/*http%3A//news.yahoo.com/s/nm/20120118/wl_nm/us_ethiopia_attack

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Insight: EU banks shrink; Irish farmers, Qatari bosses flinch (Reuters)

LONDON (Reuters) ? From his idyllic farm in Ireland's lush Wicklow Hills, Colin Hadden hatched a plan to supply his lean, grass-fed specialty lamb to some of Dublin's finest restaurants.

Over the last two years, his small business boomed, taking on 15 people and opening a butcher shop and food hall. That was before his bank halved his overdraft facility to 50,000 euros.

"They are literally making life impossible," said Hadden, who has been forced to ask suppliers for loans and provide credit to his restaurant customers, who are also suffering as EU banks shrink and the debt crisis bites.

"They are acting as debt collectors rather than banks. They are squeezing the life out of my business," Hadden told Reuters.

Hadden thinks his business, Ballyshonog Farm Foods, will survive the next year but is less confident about the future. "If you don't have credit you don't have a business," he said.

The pattern of banks withdrawing lines of credit, or "deleveraging" in banking terms, is being repeated across Ireland and Europe as well as further afield.

And it's not just the small firms that are scrambling.

Ballyshonog's hill farming may be a far cry from ship building in the yards of Denmark or pumping gas in the deserts of Qatar but small businesses and industrial conglomerates alike are all feeling the pain as European banks cut off loans.

Danish shipping group Torm is in talks to avert takeover as it struggles to reschedule $1.8 billion of bank debt.

One week before Christmas a $10-billion Qatari gas project had to find new lenders after big French banks that have worked with Qatar for years turned their backs on the deal.

Such is the reality of a huge pullback around the world in lending by Europe's banks in reaction to the debt crisis.

Deleveraging is wrenching the corporate world, threatening auto, aviation and shipping industries, hurting trade and project finance, and shaking up the financing landscape.

LENDING BINGE

The crisis has revealed the extent of the banks' decade-long lending binge and exposed eye-watering levels of debt, as well as a startlingly creaky financial system.

As a result, regulators are now insisting on tougher rules and have demanded that banks hold more capital to protect their balance sheets if things get worse.

The new rules have forced lenders to re-assess their clients more rigorously and either tear up lending agreements completely or attach higher costs to loans and funding.

Europe's banks are preparing to ditch up to 3 trillion euros of loans in the next couple of years as they "deleverage" their balance sheets, roughly 5-7 percent of those banks' assets.

As a result businesses must pay more to borrow money, leaving some firms scrambling to stay afloat and increasing the cost of their goods to consumers.

This is hitting Europe's economy hard, but may also derail growth in Asia and recovery in the United States.

"At this point it looks like being very disruptive in the short term ... the credit squeeze could be quite violent," said Nicolas Veron, a senior fellow at Brussels think-tank Bruegel.

That squeeze means banks will retrench to their home markets and fewer, safer clients at the expense of global trade. But it also marks an opportunity for Japanese, U.S., Canadian and Asia-focused banks to profit by picking up the slack.

FRENCH RETREAT

Those banks in worst trouble have been scaling back lending for the last three years.

Troubled Royal Bank of Scotland has shed 600 billion pounds of assets and scaled back its investment bank after over-ambitious acquisitions left it close to collapse.

The retreat from lending was accelerated by France's big banks -- some of whom had been the most aggressive lenders.

In the past six months BNP Paribas and Societe Generale have scaled back many loan deals, disappointing those trying to nurture or expand their business out of recession, or seeking to tap into Asian growth.

In order to cut the demands on them to hold more capital, these banks are cutting their risk-weighted assets -- a measure of their real-world exposure to potential losses.

BNP and SocGen, Deutsche Bank and Barclays, and Credit Suisse and UBS have all said they plan to shed tens of billions of euros of assets to deal with the financial chaos, and most of their peers are on a similar path.

"Banks are retrenching in terms of where they are writing business and where they are sourcing their funds," said James Longsdon, co-head of EMEA financial institutions at credit ratings agency Fitch.

He estimated European banks had shrunk their risk-weighted assets by 2-3 percent last year. "That could certainly accelerate," he said.

With no clear resolution in sight for the euro zone sovereign debt crisis, and a record 725 billion euros of debt due to mature this year, Europe's banks are likely to keep a strict risk-free hold-down on funding requests.

Big banks must also meet tougher regulations from the European Banking Authority by the end of June.

The EBA wants banks to hold a minimum 9 percent in core capital, a measure of a bank's financial strength which consists mainly of common stock and retained earnings. But with an eye on the murky economic weather, investors want banks to stash more protective capital than is strictly required.

If Europe's top banks were to aim for core capital of 10 percent, they would need to raise 180 billion euros, or cut their risk-weighted assets by 1.5 trillion euros, according to Reuters estimates. Based on an average risk-weighting of 50 percent per bank, that would mean 3 trillion euros being cut.

Lenders have several options at their disposal, including raising equity, cutting dividends or pay, or selling assets.

RBS this week sold its aircraft leasing business for $7.3 billion to Japan's Sumitomo Mitsui Financial Group and has also offloaded a $6 billion portfolio of project finance loans to Mitsubishi UFJ.

Many assets are proving hard to dispose of in an environment where entrepreneurs are loathe to invest. Banks cannot afford to sell at a loss so most are taking the option of shedding loans.

"The low hanging fruit has been plucked, now it's the harder stuff," said one senior loans banker, explaining that banks are now cutting the number of firms they will lend to, or scaling back on loans, even to firms they have worked with for years.

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For a graphic on deleveraging: http://r.reuters.com/wag55s

Graphics package on EU banks: http://link.reuters.com/qux33s

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EVERYBODY HURTS

Big French banks have in the past been known for bankrolling project financing in the Middle East. But in late 2011 they were not among the more than 20 firms who provided a $7.2 billion loan for Qatar Petroleum's Barzan gas project.

A warning came in August that year when BNP and Commerzbank refused to join 10 banks providing a $12-billion loan to SABMiller, despite having a relationship with one of the world's leading brewers, which operates on six continents.

More recently, Qatar Airways failed to attract its usual European bankers to finance its purchase of two Boeing aircraft. HSBC stepped in to complete its first financing deal with the airline for five years.

Projects backed by wealthy Qatar or loans for investment grade companies are finding other banks willing to step in, keen to get a foothold with a potentially lucrative client for when economic times improve.

But it will be increasingly hard for less stellar borrowers.

"Where a corporate has had a rocky couple of years and the outlook still isn't that strong, those guys could struggle to get refinancing," one banker in the Middle East said.

Banks are most keen to cut loose from projects denominated in U.S. dollars, which have become much more expensive for them to fund after American money market funds alarmed by the growing European debt crisis severely cut back their lending.

This has serious implications for areas such as trade and project finance and aviation and shipping, where European banks like Deutsche Bank, BNP, UniCredit, Credit Agricole, Commerzbank, ING and SocGen rank among the top lenders, according to Thomson Reuters data.

There are also worries about the knock-on impact of the banks shrinking their lending on other industries.

Some banks could quit auto financing completely. With three-quarters of EU car sales dependent on bank credit, that could leave carmakers needing to plug the funding gap themselves or prepare for lower sales, analysts warn.

Indeed, Morgan Stanley analysts estimate auto demand suffers badly in deleveraging markets, with demand for cars taking at least 5-7 years to recover from pre-crisis levels.

ONLY THE STRONG SURVIVE

The lending void left by European banks will not stay empty for long, however. Stronger global banks and local lenders are already stepping up to take advantage of the opportunity to grab market share and set advantageous lending rates.

Data from Thomson Reuters LPC shows seismic shifts in the ranks of global loan providers already.

Japan's megabanks on average have already trebled their lending in 2011 as they sought growth outside a stagnant domestic market and benefited from domestic economic conditions to fund themselves relatively cheaply.

Mizuho Financial Group jumped to fifth spot from 11th in the global loans table and was joined by SMFG and Mitsubishi UFJ in the top ten.

Lending by U.S. banks also jumped, and the top three spots were filled by JP Morgan, Bank of America Merrill Lynch and Citigroup.

All the European banks in the top 20 slipped down the rankings, with the exception of Asia-focused HSBC.

Richard Meddings, finance director of Standard Chartered, told Reuters last month he expected to win market share and reprice business at a higher level as a result of aggressive deleveraging by Western banks.

But the stronger banks will be choosy and deploy capital where it gets them a new area or client, and bosses want to see hard evidence it will create a lucrative new relationship.

Japanese banks stepped in to lend to Russia's Gazprom when French lenders recently retreated, bankers said. Japan is dependent on Russian LNG exports and has an eye on potential projects in Russia's Pacific regions where project financing may be needed.

Indian, Chinese and Korean banks are not aggressively chasing deals, but are stepping in on loans where they have a trading link to the company or country.

Others capital providers could also step in, such as private equity firms which are cash-rich and have more than $700 billion to deploy, according to data provider Preqin.

Companies are also expected to turn more to bond markets for their cash, shifting closer to the U.S. market model where companies rely more on raising debt and less on bank loans.

Demonstrating the search for alternatives, Italian power company Edipower said two days before Christmas that it would go to its shareholders to refinance a 1 billion euro loan, after failing to renew the loan with banks on attractive terms.

EIGHT YEARS OF PAIN?

How widespread the impact of deleveraging on the recovery of the industrialized world will be, and how long it will last, draws contrasting views.

Politicians are talking tough about limiting the pain of emerging from recession by telling banks to slow the process of deleveraging, but their influence may just limit how far banks reduce domestic lending and not their overseas retreat.

Germany's Commerzbank has already said it will only lend in its home market and Poland.

Politicians and governments will also be caught in the squeeze, as banks sell their sovereign debt, hardly helping confidence in the euro zone's economic stability.

Banks cut their net exposure to the sovereign debt of Greece, Ireland, Italy, Portugal and Spain by 50 billion euros in the first nine months of last year, according to bank disclosures.

And there are warnings that the process has only just begun and will be more severe than past credit crunches -- such as in the United States, Sweden, Hong Kong and Japan -- which have typically led to a 6-7 year decline in lending.

The problem for Europe is that banks, governments and households are all cutting back at the same time, after a jump in public and private indebtedness since the mid-1980s.

"It will be long and drawn out ... it looks like being an eight year process at least," said Andrew Lim, analyst at Espirito Santo.

(Additional reporting by Conor Humphries in Dublin, Melissa Akin in Moscow and Tessa Walsh, Sarah White, Alasdair Reilly, Jonathan Saul, David French and Rod Morrison in London; Editing by Sophie Walker and Peter Millership)

Source: http://us.rd.yahoo.com/dailynews/rss/europe/*http%3A//news.yahoo.com/s/nm/20120118/bs_nm/us_banks_europe_shrinking

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Friday, January 20, 2012

Female Fish Attracted to Well-Fed Mates (LiveScience.com)

For some animals, looks and wealth aren't everything. Female mosquitofish prefer mates that had a steady nutritional upbringing over those that suffered a poor start in life with a restricted diet, even though the male fish are physically similar in adulthood, a new study shows.

Male mosquitofish ? an invasive species in Australia originally introduced to control mosquitoes ? born in a food-scarce environment will delay sexual maturation and undergo a period of accelerated growth when food becomes available. The fish use this strategy, called compensatory growth, to ensure that they mature to the same size as males that developed normally. Researchers found that females choose to associate with larger males, regardless of developmental history, as is the case with many other animal species. But when given the choice between two equal-size males, the females gravitate toward the males that had experienced normal growth.

The researchers are unsure how the females are able to tell the difference between the seemingly identical males, but they suggest that differences in locomotion or the relative length of genital organs (called gonopodia) may be involved.

Whatever the case, "this work demonstrates there are hidden costs to a poor start in life," study lead author Andrew Kahn, a biology graduate student at the Australian National University, said in a statement.

A selection bias

Kahn and his colleagues reared 365 newborn male mosquitofish, all of which were fed the same amount of food for their first week of life. They then put around half of the fish on a severely restricted diet for three weeks, before returning them to a normal diet until they matured.

In an aquarium with three compartments, the researchers tested 47 pairs of full-sibling brothers that were nearly identical in size but had different developmental histories. They placed one male at each end of the aquarium and a virgin female in a transparent cylinder in a central compartment.

When the researchers removed the cylinder, the now-free females were more attracted to the normal-growth males ? they spent more time staring at those males.

The effects of poor nutrition

As for how the females could pinpoint a male fish's nutritional background, various physical or other cues may be at play. Perhaps the female fish caught a glimpse of the male's genitals. Research has shown that early food limitation decreases the length of a male's gonopodia relative to his body size and other studies suggest that females prefer males with longer gonopodia.

On the other hand, the females may have been able to detect subtle differences in how the males moved, a factor also affected by developmental history in some fish species.

At the end of the day, the researchers believe the females are looking to mate with the normal males because they are likely healthier.

"If males have undergone a period of poor nutrition they might be more susceptible to diseases, which they could then pass on to the female," Kahn said. "And there are the indirect genetic reasons ? by choosing males who have had a better development history, your offspring have a good chance of being better at getting food when they are young."

The research was published Jan. 11 in the journal Biology Letters.

Source: http://us.rd.yahoo.com/dailynews/rss/science/*http%3A//news.yahoo.com/s/livescience/20120119/sc_livescience/femalefishattractedtowellfedmates

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