Sensitive skin problems aren't skin deep

SINGAPORE: Most might assume that sensitive skin is mainly due to in an intake of the wrong food, or the application of the wrong product.

However, the main reason for sensitive skin lies on the surface of the skin, and what that layer is subjected to from the daily environment.

In a sensitive skin survey held by Curél, the dermatological research oriented brainchild of Japanese chemical and cosmetics giant Kao, almost half of the respondents from various countries claimed to suffer from sensitive skin.

And within this number, Singaporeans make up a whopping 70 percent.

Part of the reason lies in Singapore's tropical climate –from wet and rainy, to sunny but humid – coupled with hours spent in drying air-conditioned environments whether at work, home or even shopping.

More precisely, as explained by Curél's skincare expert Koicihi Ishida, skin in the Singapore environment is subject to "enhanced blood circulation and skin dryness due to the rapid change of the temperature and humidity within a short time frame".

"At high temperatures and humidity, skin cells swell when sweat is produced, reducing the skin's barrier function" he explains.

"On the other hand, low temperatures and a humidity level of 50 percent or less will cause the skin's moisture to decrease directly and become dry. Either way, the skin becomes sensitive and easily irritated."

In other words, the root of the problem of sensitive skin isn't skin deep.

In fact, it lies with the outermost layer of the skin, known as the stratum corneum (SC).

It is the first barrier between the skin and the external environment, and offers protection to the underlying tissue from infection, dehydration, chemicals and physical stress.

The top layer stratum corneum is largely held together by ceramide.

According to Curél, about half of all sensitive skin cases is due to the SC's impaired function, making it the main cause, as well as solution, to various sensitive skin conditions.

As skin expert Ishida points out, sensitive skins possess low levels of ceramide, a key element in the SC.

In developing a skincare range that targets sensitive skin, Curél therefore focused its attention on ceramide and replenishing the skin's supply of this intercellular lipid.

Tackling the problem from within also helps, with an intake of naturally occurring ceramide in food stuffs such as soya beans, spinach, rice, wheat flour and the high-fibre, jelly-like konjac or konnyaku, as the product is known in Japan where it's often served in oden or as noodle strips.

Ceramide works by fusing with the skin's moisture and oil to prevent moisture loss while holding skin cells together, similar to a brick and mortar structure that creates a barrier function for the SC.

With ceramide care, sensitive skin is directly treated to improve and replenish the impaired SC barrier which will in turn suppresses the sensitive symptoms and conditions, making the skin more resistant to external irritants.

But this is not a one-hit, one-week solution as the experts will point out.

The newly recovered skin can revert to its troubled state without proper maintenance, or in the case of more serious skin conditions such as atopic dermatitis, where ceramide drops to its original low state.

The Curél skincare range for sensitive skin runs a gamut of applications, from face and body to scalp and hair, and everyone from adults to babies, are supposed to be able to use the products.

How could so that be so?

"Although the two skin types may differ in thickness, appendices and sensitivity, the fundamental structure and function of the skin is common for the young and old of both sexes," explains Ishida.

"For the elderly, they have dry skin due to old age and it's usually accompanied with itchiness, which can be seen especially on the lower thigh area. In many cases, their SC's barrier function is damaged."

The same concept of reinforcing the SC's protective function applies to babies and the young, as the risk of sensitive skin is in fact higher in the young, than when a person ages.

"After birth, a baby's skin tends to be influenced by the environment and thus its skin condition might worsen as it is naturally delicate and sensitive," Ishida points out, while adding that "it is proven by the mild skin care from an early stage that a baby can maintain the healthy skin after growing up."

"Therefore, it is important to have a skincare regime from an early stage to prevent skin issues during their growing up process" he advises.

So even if you don't suffer from sensitive skin, there's little reason not to protect your skin the way it has been protecting you all this while.

-CNA/fl

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Nokia to offer paid upgrade to Lumia-only music service

Music+ will offer premium music options to subscribing Lumia owners.

(Credit:
Nokia)

A few months after jumping in to the free music streaming sector, Nokia is getting ready to give its Lumia-only service a jump-start with a premium upgrade.

Nokia Music+, an upgrade to the free Mix Radio service that Nokia launched last September, will offer Lumia owners unlimited skips and unlimited downloads, the Finnish handset maker announced in a company blog post today. The service also will offer higher quality streams, allowing downloads at eight times the existing quality.

The new service will also offer lyrics for users' mobile device and a Web app for home use.

"Nokia Music is great for discovering new music, and we've found that there's a core of users that want even more of it," Nokia vice president of entertainment Jyrki Rosenberg said in the post. "This is how Nokia Music+ came about."

The service is expected to roll out in the coming weeks with a price of around $3.99 a month.

The Lumia line helped turn around Nokia's fortunes in the fourth quarter, contributing to the handset maker's profit of 202 million euros ($269 million), a massive gain over the 1 billion euros the company lost during the same period in 2011. However, despite sales off 4.4 million Lumia units worldwide, revenue fell from 10 billion euros in the fourth quarter of 2011 to 8 billion last quarter.

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Pictures: The Story Behind Sun Dogs, Penitent Ice, and More

Photograph by Art Wolfe, Getty Images

If you want the beauty of winter without having to brave the bone-chilling temperatures blasting much of the United States this week, snuggle into a soft blanket, grab a warm beverage, and curl up with some of these natural frozen wonders.

Nieve penitente, or penitent snow, are collections of spires that resemble robed monks—or penitents. They are flattened columns of snow wider at the base than at the tip and can range in height from 3 to 20 feet (1 to 6 meters). The picture above shows the phenomenon in central Chile. (See pictures of the patterns in snow and ice.)

Nieve penitente tend to form in shallow valleys where the snow is deep and the sun doesn't shine at too steep an angle, said Kenneth Libbrecht, a physicist at the California Institute of Technology in Pasadena who studies ice crystal formation.

As the snow melts, dirt gets mixed in with the runoff and collects in little pools here and there, he said. Since the dirt is darker in color than the surrounding snow, the dirty areas melt faster "and you end up digging these pits," explained Libbrecht.

"They tend to form at high altitude," he said. But other than that, no one really knows the exact conditions that are needed to form penitent snow.

"They're fairly strong," Libbrecht said. "People have found [the spires] difficult to hike through."

—Jane J. Lee

Published January 25, 2013

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'Barrier of Bodies' Trapped Nightclub Fire Victims

A fast-moving fire roared through a crowded nightclub in southern Brazil early Sunday, within seconds filling the space with flames and a thick, toxic smoke that killed more than 230 panicked partygoers who gasped for breath and fought in a stampede to escape.

It appeared to be the world's deadliest nightclub fire in more than a decade.

Firefighters responding to the blaze at first had trouble getting inside the Kiss nightclub because bodies partially blocked the club's entryway.

Witnesses said a flare or firework lit by band members started the blaze in Santa Maria, a university city of about 260,000 people. Officials at a news conference said the cause was still under investigation — though police inspector Sandro Meinerz told the Agencia Estado news agency the band was to blame for a pyrotechnics show and that manslaughter charges could be filed.

Television images showed black smoke billowing out of the Kiss nightclub as shirtless young men who had attended a university party joined firefighters using axes and sledgehammers to pound at windows and hot-pink exterior walls to free those trapped inside.

Bodies of the dead and injured were strewn in the street and panicked screams filled the air as medics tried to help. There was little to be done; officials said most of those who died were suffocated by smoke within minutes.

Germano Roratto/AFP/Getty Images

Brazil Nightclub Fire: Nearly 200 People Killed Watch Video

Within hours a community gym was a horror scene, with body after body lined up on the floor, partially covered with black plastic as family members identified kin.

Outside the gym police held up personal objects — a black purse, a blue high-heeled shoe — as people seeking information on loved ones looked crowded around, hoping not to recognize anything being shown them.

Guido Pedroso Melo, commander of the city's fire department, told the O Globo newspaper that firefighters had a hard time getting inside the club because "there was a barrier of bodies blocking the entrance."

Teenagers sprinted from the scene after the fire began, desperately seeking help. Others carried injured and burned friends away in their arms. Many of the victims were under 20 years old, including some minors.

"There was so much smoke and fire, it was complete panic, and it took a long time for people to get out, there were so many dead," survivor Luana Santos Silva told the Globo TV network.

The fire spread so fast inside the packed club that firefighters and ambulances could do little to stop it, Silva said.

Another survivor, Michele Pereira, told the Folha de S. Paulo newspaper that she was near the stage when members of the band lit flares that started the conflagration.

"The band that was onstage began to use flares and, suddenly, they stopped the show and pointed them upward," she said. "At that point, the ceiling caught fire. It was really weak, but in a matter of seconds it spread."

Guitarist Rodrigo Martins told Radio Gaucha that the band, Gurizada Fandangueira, started playing at 2:15 a.m. "and we had played around five songs when I looked up and noticed the roof was burning"

"It might have happened because of the Sputnik, the machine we use to create a luminous effect with sparks. It's harmless, we never had any trouble with it.

"When the fire started, a guard passed us a fire extinguisher, the singer tried to use it but it wasn't working"

He confirmed that accordion player Danilo Jacques, 28, died, while the five other members made it out safely.

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Get cirrus in the fight against climate change

FEATHERY cirrus clouds are beautiful, but when it comes to climate change, they are the enemy. Found at high-altitude and made of small ice crystals, they trap heat - so more cirrus means a warmer world. Now it seems that, by destroying cirrus, we could reverse all the warming Earth has experienced so far.

In 2009, David Mitchell of the Desert Research Institute in Reno, Nevada, proposed a radical way to stop climate change: get rid of some cirrus. Now Trude Storelvmo of Yale University and colleagues have used a climate model to test the idea.

Storelvmo added powdered bismuth triiodide into the model's troposphere, the layer of the atmosphere in which these clouds form. Ice crystals grew around these particles and expanded, eventually falling out of the sky, reducing cirrus coverage. Without the particles, the ice crystals remained small and stayed up high for longer.

The technique, done on a global scale, created a powerful cooling effect, enough to counteract the 0.8 °C of warming caused by all the greenhouse gases released by humans (Geophysical Research Letters, DOI: 10.1002/grl.50122).

But too much bismuth triiodide made the ice crystals shrink, so cirrus clouds lasted longer. "If you get the concentrations wrong, you could get the opposite of what you want," says Storelvmo. And, like other schemes for geoengineering, side effects are likely - changes in the jet stream, say.

Different model assumptions give different "safe" amounts of bismuth triiodide, says Tim Lenton of the University of Exeter, UK. "Do we really know the system well enough to be confident of being in the safe zone?" he asks. "You wouldn't want to touch this until you knew."

Mitchell says seeding would take 140 tonnes of bismuth triiodide every year, which by itself would cost $19 million.

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

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French-led forces retake key north Mali town

BAMAKO: French-led troops recaptured the Islamist stronghold of Gao on Saturday, in a major boost to their 16-day-old offensive against Al Qaeda-linked rebels holding Mali's vast desert north.

France's Prime Minister Jean-Marc Ayrault said the nation's troops were also advancing on Timbuktu, another key northern town held by the insurgents.

The seizure of Gao, the most populated town in Mali's northern region, which is roughly the size of Texas, was announced by the French defence ministry and confirmed by Malian security sources.

France said troops from Niger and Chad "will pick up the baton" and that the mayor of Gao, Sadou Diallo, was due to return from the capital Bamako, 1,200 kilometres (750 miles) to the southwest.

"A first contingent of Malian, Chadian and Niger troops are presently in Gao to help secure it," a Malian security source told AFP by telephone from the town. They had been flown in from Niamey, capital of neighbouring Niger.

"The French and African forces are in 100-percent control of the town of Gao," another Malian security source said. "There is popular rejoicing and everyone is very happy."

Other soldiers from Chad and Niger meanwhile were moving toward the Malian border from the Niger town of Ouallam, which lies about 100 kilometres southeast of Gao.

French-led forces had overnight Friday seized Gao's airport and a key bridge on the southern entrance of the town, held by the Al Qaeda-linked Movement for Oneness and Jihad in West Africa (MUJAO).

There had not been substantive fighting around Gao, said a spokesman for the French military command, but there was some sporadic gunfire from "terrorist elements".

Defence ministry sources in Paris described as "plausible" a report in the Le Monde, citing military sources, that hundreds of Islamists had died since the French military intervention in Mali.

In April last year after a coup in Bamako, an alliance of Tuareg rebels who wanted to declare an independent homeland in the north and several hardline Islamist groups seized Gao, Timbuktu and Kidal.

The Islamists quickly sidelined the Tuaregs and imposed their harsh interpretation of Islamic sharia law. Transgressors were flogged, stoned and executed, they banned music and television and forced women to wear veils.

The Islamist groups include Al-Qaeda in the Islamic Maghreb (AQIM); the MUJAO, which is an offshoot of AQIM; and homegrown Islamist group, Ansar Dine.

French Prime Minister Jean-Marc Ayrault said the troops were currently "around Gao and (will be) soon near Timbuktu," further to the west. A fabled caravan town on the edge of the Sahara desert, for centuries it was a centre of Islamic learning.

"The objective is that the African multinational force being put together be able to take over, and that Mali be able to begin a process of political stabilisation," he said.

The MUJAO meanwhile said it was ready for negotiations to release Gilberto Rodriguez Leal, a French national of Portuguese origin kidnapped in western Mali in November.

But Ayrault snubbed the offer. "We will not give in to blackmail," he said.

"We cannot cede to terrorism because if this is the case they will win every time."

West African defence chiefs meanwhile reviewed the slow deployment of regional forces to bolster the French-led offensive at an emergency meeting in Ivory Coast boosting their troops pledges to 5,700 from the previous 4,500.

Chad, which neighbours Mali but is not a member of the Economic Community of West African States raising that force, has separately promised 2,000 soldiers.

A fraction of the African forces has arrived in Bamako, the Malian capital in the south of the country, and is slowly deploying elsewhere. So far however, the French and Malian forces have done all the fighting.

France has already deployed 2,500 troops to Mali and its defence ministry says 1,900 African soldiers are already on the ground there and in Niger.

Aid agencies have expressed concern about the growing food crisis for civilians in the vast semi-arid north of Mali and the drought-stricken Sahel as a whole.

- AFP/fa

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The ultimate gall of a heartless iPhone thief

An object of desire?

(Credit:
CNET)

One should never expect justice in life.

The best one can hope for is poetry.

And yet, just once or twice, both manage to collide with a deliciousness that moves the soul.

Here is the tale of a teenage girl who had her iPhone stolen.

As The New York Times composes it, the girl had her
iPhone 4S ripped from her by a teenage boy in Brooklyn's notoriously difficult Prospect Park.

iPhone theft is rather popular in New York. Indeed, Mayor Bloomberg recently suggested that it's responsible for an increase in crime in the city.

Anyway, the iPhone-less girl collared a couple of policemen, but the miscreant was not to be found.

However, the thief then decided that he'd try to get some money for the phone. So he met a man on a Flatbush street -- as you do.

The man asked to take a look at the phone. Perhaps he wanted to see whether Siri was still inside.

Then, he ran off with it.

Yes, this is slightly poetic. But we've only just begun.

You see, the boy thief was not very happy. After all, he'd had his recently acquired property stolen. So he went off in search of a policeman to report the crime.

I pause for your sound effects.

Thank you.

More Technically Incorrect

The police reacted with unusual efficiency. They corralled both the boy and the man who had taken Siri from him. But they still assumed the boy was the victim.

Are you ready for verse three?

The phone rang. It was the girl trying to do a deal to get her phone back. The police realized something might be amiss here. This seemed to be a miss who actually owned the phone.

So they waited for her to arrive in Flatbush. She recognized the boy's sneakers. They were pink.

I pause for your further sound effects.

The police decided it was time to play Solomon. They would slice the phone in two if one party didn't renounce their claim to the phone.

No, wait. They asked both the girl and the pink-sneakered boy to unlock the phone with the PIN code.

You're already there, aren't you? Both the actual thieves were brought to justice -- the actual kind. And the girl got her phone back.

There are several morals to this story.

One, don't steal iPhones if you're wearing pink sneakers.

Two, if someone does unto you as you have done unto someone else, take it onto the chin. It will help you understand the feelings of others.

Three, if you're the kind of New Yorker who thinks they can always get away with it, well, you can't. Not always.

Read More..

Pictures: The Story Behind Sun Dogs, Penitent Ice, and More

Photograph by Art Wolfe, Getty Images

If you want the beauty of winter without having to brave the bone-chilling temperatures blasting much of the United States this week, snuggle into a soft blanket, grab a warm beverage, and curl up with some of these natural frozen wonders.

Nieve penitente, or penitent snow, are collections of spires that resemble robed monks—or penitents. They are flattened columns of snow wider at the base than at the tip and can range in height from 3 to 20 feet (1 to 6 meters). The picture above shows the phenomenon in central Chile. (See pictures of the patterns in snow and ice.)

Nieve penitente tend to form in shallow valleys where the snow is deep and the sun doesn't shine at too steep an angle, said Kenneth Libbrecht, a physicist at the California Institute of Technology in Pasadena who studies ice crystal formation.

As the snow melts, dirt gets mixed in with the runoff and collects in little pools here and there, he said. Since the dirt is darker in color than the surrounding snow, the dirty areas melt faster "and you end up digging these pits," explained Libbrecht.

"They tend to form at high altitude," he said. But other than that, no one really knows the exact conditions that are needed to form penitent snow.

"They're fairly strong," Libbrecht said. "People have found [the spires] difficult to hike through."

—Jane J. Lee

Published January 25, 2013

Read More..

Newtown Families March for Gun Control in DC

Jan 26, 2013 4:59pm

(YURI GRIPAS/AFP/Getty Images)

WASHINGTON, D.C. — Near-freezing temperatures didn’t stop several thousand gun-control activists from bearing their pickets today, carrying signs emblazoned with “Ban Assault Weapons Now” and the names of gun violence victims in a demonstration organized as a response to the mass shooting in Newtown, Conn. last month.

Walking in silence, the demonstrators trudged between Capitol Hill and the Washington Monument over a thin layer of melting snow. They were joined by politicians and some families of the Newtown victims.

March organizer Shannon Watts said the event was for the “families who lost the lights of their lives in Newtown, daughters and sons, wives and mothers, grandchildren, sisters and brothers gone in an unfathomable instant.”

“Let’s stand together and use our voices, use our votes to let legislators know that we won’t stand down until they enact common sense gun control laws that will keep our children out of the line of fire,” she told demonstrators.

Watts founded One Million Moms for Gun Control after the killing of 20 first graders and six adults at the Sandy Hook Elementary School in Newtown in December. In a profile with the New York Times, Watts said her 12-year-old son had suffered panic attacks after learning of last summer’s Aurora, Colo., theater shooting, leaving her at an impasse over how to talk to him about the latest tragedy.

Also among the speakers was a survivor of the 2007 Virginia Tech massacre, Collin Goddard.

“We need to challenge any politician who thinks it’s easier to ask an elementary school teacher to stand up to a gunman with an AR-15 than it is to ask them to stand up to a gun lobbyist with a checkbook,” he said.

The demonstration comes amid a push by progressive lawmakers to enact stricter gun control measures as a response to the trend of recent mass killings, although any hypothetical bill would likely face strong opposition in Congress.

Rep. Chris Van Hollen, D-Md., was among the demonstrators today.

“The idea that people need high-capacity magazines that can fire 30, 50, 100 rounds has no place in a civilized society,” he said. “Between the time we’re gathered here right now and this time of day tomorrow, across America, 282 Americans will have been shot.”

The congressman was quoting statistics compiled by the Brady Campaign to Stop Gun Violence.

INFOGRAPHIC: Guns by the Numbers

Last week President Obama proposed a sweeping overhaul of federal measures regulating gun ownership, including a universal background check system for sales, banning assault weapons,  and curbing the amount of ammunition available in weapon clips.

An ABC News/Washington Post poll released Thursday found 53 percent of Americans viewed Obama’s gun control plan favorably, 41 percent unfavorably. The division was visible today, as a handful of gun-rights advocates also turned out on the National Mall to protest what they believe would be infringements on their Second Amendment liberties.

ABC’s Joanne Fuchs contributed to this report.

SHOWS: Good Morning America World News

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Today on New Scientist: 25 January 2013

Hagfish gulped up in first video of deep-sea seal hunt

Watch the first sighting of a seal's underwater eating habits spotted by a teenager watching a live video feed

World's oldest portrait reveals the ice-age mind

A 26,000-year-old carved ivory head of a woman is not just an archaeological find - a new exhibition in London wants us to see works like this as art

Dung beetles navigate using the Milky Way

Forget the Pole Star: on moonless nights dung beetles use the Milky Way to follow a straight path with their dung ball

Stress's impact can affect future generations' genes

DNA analysis has yielded the first direct evidence that chemical marks which disable genes in response to stress can be passed on to offspring

Uncharted territory: Where digital maps are leading us

The way we use maps is evolving fast, says Kat Austen, and it will change a great deal more than how we navigate

Feedback: Tales of the stony turd industry

Fossilised faeces in Shitlington, confusing railway notices, organic water, and more

Duolingo gives language learning a jump start

First evidence that Duolingo, a new website that helps you learn a language while translating the web, actually works

Dolphins form life raft to help dying friend

A group of dolphins was caught on camera as they worked together to keep a struggling dolphin above water by forming an impromptu raft

Zoologger: Supercool squirrels go into the deep freeze

Hibernating Arctic ground squirrels drop their body temperatures to -4 °C, and shut their circadian clocks off for the winter

Greek economic crisis has cleared the air

The ongoing collapse of Greece's economy has caused a significant fall in air pollution, which can be detected by satellites

Body armour to scale up by mimicking flexible fish

Armour that is designed like the scales of the dragon fish could keep soldiers protected - while still letting them bend

Astrophile: Split personality tarnishes pulsars' rep

Pulsars were seen as cosmic timekeepers, but the quirky way in which one example shines suggests we can't take their behaviour for granted

Shrinking proton puzzle persists in new measurement

The most precise experiment yet to find the proton's radius confirms that it can appear smaller than our theories predict - is new physics needed?

Tight squeeze forces cells to take their medicine

A short sharp squash in these channels and a cell's membrane pops open - good news when you want to slip a molecule or nanoparticle in there

Read More..