Global warming opens Arctic seabed to the search for oil and gas

PARIS: As the ice retreats, nations try to advance their undersea borders and resource claims

The Arctic is rich in natural resources, including hydrocarbons, and rapid thawing due to global warming could make exploiting those mineral resources feasible relatively soon.

Large, discovered oil and natural gas reserves totaling 233 billion barrels of oil or its equivalent can be found in the Arctic Basin, according to a recent study by two British consulting firms, Wood McKenzie and Fugro Robertson, "with potential additional resources estimated at 166 billion barrels of oil equivalent."

The study, "The Future of the Arctic," found that natural gas accounted for 80 percent of all available reserves, and that 69 percent of it belonged to Russia.

The study focused on areas within defined jurisdictions, primarily on the continental shelf, said David Parkinson, an upstream consultant at Wood Mackenzie.

Most of what the study found is exploitable. "The technology is there" he said. There is also speculation that additional reserves may exist farther out at sea.

"The Arctic is not an homogenous zone," and research in the area is difficult because of the extreme conditions there, Parkinson said. Ice floes impede navigation while the extreme cold causes machinery to freeze and instruments to malfunction.

Viewed in this light, the planting of a titanium Russian Federation flag on the floor of the Arctic Sea this summer was something of a technical feat - a fact that got lost in the political fallout as some of Russia's Arctic neighbors reacted to what they saw as an attempted land grab.

Russia has denied that it was staking out rights, saying that it was simply trying to prove that its continental shelf "stretches up to the North Pole."

But if Russia's continental shelf were to stretch to the North Pole, that would reinforce its claim of jurisdiction over the area. In 2001, Russia made a submission to the Continental Shelf Commission of the Law of the Sea Treaty, stating that the Lomonosov Ridge - an underwater oceanic ridge stretching 1,800 kilometers, or 1,100 miles, under the Arctic Ocean and the North Pole - was actually an extension of the Eurasian Continent.

Under the treaty's provisions a coastal state's jurisdiction includes its continental shelf. Countries submit data to prove how far the shelf extends. The data are then approved, or not, by the commission. The commission, however, does not determine who has jurisdiction over the shelf. That is a political decision made through negotiations between countries with overlapping claims.

Last year, Norway made a submission that would extend its continental shelf by 250,000 square kilometers, or 96,500 square miles, including an area under the Norwegian Sea known as the Banana Hole. If the commission agrees that a continuous continental shelf extends in the area, three countries, Norway, Iceland and Denmark, would have overlapping claims to sort out.

The three countries cooperated over Norway's submission because it would be in their mutual interest to determine the extent of the shelf. "After that it would be up to us to sit down and set the boundaries," said Rolf Einar Fife, the director general of the legal department at Norway's Foreign Ministry.

In this case the three countries have already agreed on how to set the boundaries. Negotiations, meanwhile, between Norway and Russia over rights in the Barents Sea, including an area called the Loop Hole, are ongoing.

The flag-planting episode, characterized as grandstanding by some and ill-considered by others, created the impression that a fight for the North Pole was in full swing. That is because some countries are running out of time to demonstrate the extent of their continental shelves, Fife said.

Countries have a 10-year deadline, after ratifying the treaty, to make that demonstration. Russia and Norway joined the treaty 10 years ago, in 1997, while Canada and Denmark ratified in 2003 and 2004 respectively, giving them more time to document their claims.

It is easier to clarify the outer limits of the continental shelf, and negotiate seabed boundaries on the basis of prospective resources, before knowledge of confirmed reserves gets in the way of compromise, Fife said, even if "such assessments may ultimately also prove to be inaccurate or misleading."

As an example, he cited the case of the North Sea, where boundaries were set without jurisdictional disputes at a time when potential oil and natural gas fields were vastly underestimated and were commercially and technically impossible to exploit under then-existing conditions.

Exploration of the deep Arctic is unprofitable under present conditions but global warming could change that. Not only is the planet warming but it is warming faster in the Arctic region, which is a vast container of carbon and greenhouse gases. These are being released into the atmosphere as the ice and snow melt, speeding up the warming process.

Permafrost in particular contains more organic carbon than is currently in the atmosphere and is especially rich in methane, one of the most potent greenhouse gases.

Polar ice cover shrank to a record summertime low this year of 4.13 million square kilometers, compared with an average ice cover of 6.74 million square kilometers between 1979 and 2000, according to the U.S. National Snow and Ice Data Center, in Boulder, Colorado. The difference between the area that remained covered this summer and the previous record low in 2005 was equivalent to five times the area of the United Kingdom, the center said.

Not only could shrinking ice cover cut the cost of energy exploration, but the receding ice pack could also reduce transport costs significantly by opening up currently frozen maritime routes.

"Export makes up a significant percentage of the overall costs of developing Arctic resources, in many instances greater than 50 percent," Parkinson said. For shipping in general, cutting across polar waters through the Northern Passage could shave 5,000 miles off a voyage between northern Europe and East Asia.

But climate change is also having a negative impact on some existing energy sources. Hydrocarbon shipments from northern oil and natural gas fields often pass through on-shore infrastructures that depend for a solid foundation on the permafrost's deep, permanently frozen layers. The permafrost active layer, however, the part that thaws in the summer and freezes in the winter, is expanding downward and, in some areas, no longer re-freezes in winter.

Structures constructed to polar norms are unfit for the marsh lands that are swiftly replacing them. According to a study, the Arctic Climate Impact Assessment, released in 2005 by the intergovernmental Arctic Council and the International Arctic Science Committee, global warming is already a threat to pipelines, pile foundations, bridges, dikes, erosion protection structures and to the stability of open pit mines in polar and sub-polar regions.

In Siberia, the study found, nearly 50 percent of all buildings were considered to be in poor condition, and one major oil-producing district, the Khanty-Mansi autonomous region of western Siberia, had recorded 1,720 pipeline accidents with spills in a single year, contaminating 640 square kilometers of land.

In Alaska, the number of days during which temperatures were cold enough to allow the use of ice roads on the fragile tundra had fallen to 100 from 200 per year since 1970, the study said. Platforms in the Beaufort Sea would require more stringent norms to withstand the increased force of waves, it warned.

Melting ice and snow are causing sea levels to rise, while less sea ice has resulted in increased wave action, said Joan Eamer, the manager of the polar program of the global resource information database established by the United Nations Environmental Program. That, together with more frequent and more violent storms is accelerating coastal erosion, particularly in areas where tidal waves due to storm activity are now more common. "There will be a rise in the frequency and the strength of storms at sea," she said.

The rise in sea level is now occurring at a pace of 3.1 millimeters, or 0.1 inch, a year, compared with a 20th-century average of 1.7 millimeters a year. The Intergovernmental Panel on Climate Change has estimated that in the course of this century, sea level could rise by 80 centimeters, but recent data indicate that this could be a conservative estimate, Eamer warned. Melting ice and snow account for a third of the rise, with the rest resulting from increased surface run-off of rainwater caused by erosion, construction and other factors.

Climate change models have not taken into account the rapid rate of deterioration of the ice and snow. "We've realized that things don't move in a linear fashion," Eamer said. "The melting leads to chunks of ice falling off and these melt faster than if they'd not fallen, and the acceleration phenomenon is increased.

"There's a quantum leap forward each time we reach a certain point."

While the breakup of the ice pack may open shipping lanes, it could increase the iceberg hazard for tankers and rigs in northern waters. There is evidence that icebergs are becoming more unpredictable, calving out of season and following erratic travel patterns that are harder to track, just as shipping numbers in polar waters are increasing.

Tensions over the control of northern navigation routes have flared in the past and are likely to get worse as access to the Arctic becomes easier.


Source: International Herald Tribune , By Patricia Brett


Global Warming - A Threat To Kids Health

According to WebMD news, children may be especially vulnerable to the effects of global warming and steps should be taken to safeguard their health as temperatures rise.

The American Academy of Pediatricians is calling upon the nation's government and physicians to recognize the impact of global warming on children's health and develop strategies to protect children from potential harm.

Beyond increasing the risk of heat-related conditions like heat stroke and dehydration, researchers say global warming exacerbates common childhood diseases such as asthma and allergies. Children are also at risk of losing a parent or caregiver due to extreme weather.

Global Warming Hurts Kids

According to the group's report, examples of the effects global warming could have on children's health include:

* Increased susceptibility to injury or death, posttraumatic stress, loss of caregiver, disrupted education and displacement as a result of weather events such as floods, hurricanes, and droughts.

* Damage to lung function and growth due to increased air pollution.

* Increased waterborne and food-borne illnesses, including infectious diarrhea, from increased temperatures and disrupted food supplies.

* Increase in infectious diseases spread by mosquitoes and ticks, such as West Nile virus, malaria, and Lyme disease.

* Increased exposure and vulnerability to heat-related conditions such as heat stroke and heat exhaustion.


Researchers say children are often most vulnerable to adverse health effects from environmental hazards.

The group encourages pediatricians to be role models for minimizing greenhouse gas emissions linked to global warming by making changes such as switching to compact fluorescent light bulbs, reducing thermostat settings in the winter and increasing them in summer, and using cars less.

Their report was presented at a meeting of the American Academy of Pediatrics in San Francisco.

For more information go to www.aap.org.

By Jennifer Warner


Hubble captures dance of the galaxies

Two galaxies swing past each other in a cosmic dance choreographed by gravity, 300m light years from Earth in the constellation of Leo.

This image, taken by the Hubble space telescope, reveals in unprecedented detail the bright regions of star formation, interstellar gas clouds and prominent dust arms that spiral out from the galaxies' centres.

The larger galaxy on the right is seen nearly face-on, with a giant arm of stars, dust and gas reaching out and around its smaller neighbour, which is viewed edge-on.


The shapes of both galaxies have been distorted by their gravitational interaction with one another.

The pair are known collectively as Arp 87, and are just one celestial coupling among hundreds of interacting and merging galaxies known in the nearby universe.

Arp 87 was first discovered and catalogued by the astronomer Halton Arp in the 1970s, and was described in Arp's Atlas of Peculiar Galaxies.

The Hubble image, a composite of red, blue, green and infra-red exposures, was taken using the telescope's wide field planetary camera 2.

It shows a corkscrewing bridge of material spanning from one galaxy to the other, suggesting stars and gas are being drawn from the larger galaxy into the gravitational pull of the smaller one.

Interacting galaxies are often hosts to the highest levels of star formation found anywhere in the nearby universe.


Source : Guardian Unlimited


The key to a healthy heart

THE key to a man's heart may be in a little bowl, of cereal.

Men who eat whole-grain cereal for breakfast have a lower risk of heart failure than their cereal-averse peers, according to a new study from researchers at Brigham and Women's Hospital and Harvard Medical School.

Culling data from a national survey of more than 20,000 physicians launched in 1982, the investigators found that men who ate seven or more servings per week of cereal had 28% less risk of heart failure than those who ate no cereal at all.

The risk was reduced by 22% for those who ate whole-grain cereal two to six times a week.

"We found a dose response," reports Dr. Luc Djoussé, an associate epidemiologist at Brigham and Women's Hospital and assistant professor of medicine at Harvard Medical School. "Thus, the more you eat, the better off you are, within reason." This is not a free ticket for huge consumption of cereal, he cautions.

"A half-cup to a cup of whole-grain cereal with 4 grams of fiber is fine. And use skim or low-fat milk."


News from Los Angeles Times , 29 october 2007


What do you know about Atherosclerosis?

Atherosclerosis - hardening and narrowing of the arteries - gets a lot of bad press, with good reason. This progressive process silently and slowly blocks arteries, putting blood flow at risk.

Atherosclerosis is the usual cause of heart attacks, strokes, and peripheral vascular disease - what together are called "cardiovascular disease." Cardiovascular disease is the No. 1 killer in America, with more than 900,000 deaths last year.

How does atherosclerosis develop? Who gets it, and why? Atherosclerosis is a mouthful, but it doesn't need to be a mystery. This deadly process is preventable and treatable. Read on, and get to know your enemy.

How It Happens

First, an Anatomy 101 review:Arteries are blood vessels that carry blood from the heart throughout the body. They're lined by a thin layer of cells called the endothelium. The endothelium works to keep the inside of arteries toned and smooth, which keeps blood flowing.

"Atherosclerosis starts when high blood pressure, smoking, or high cholesterol damage the endothelium," says Richard Stein, MD, national spokesperson for the American Heart Association. "At that point, cholesterol plaque formation begins."

Cholesterol invasion. Bad cholesterol, or LDL, crosses damaged endothelium. The cholesterol enters the wall of the artery.

Plaque formation. Your white blood cells stream in to digest the LDL cholesterol. Over years, the accumulating mess of cholesterol and cells becomes a plaque in the wall of the artery.

"It's a jumble of lipids, or cholesterol, cells, and debris, and it creates a bump on the artery wall," explains Stein. As the process of atherosclerosis continues, "the bump gets bigger." A big enough bump can create a blockage.

Atherosclerosis tends to happen throughout the body. "So if you have plaque in your heart, you're at a higher risk for stroke, and vice versa," says Stein.

Atherosclerosis usually causes no symptoms until middle or older age. Once narrowings become severe, they choke off blood flow and can cause pain. Blockages can also suddenly rupture, causing blood to clot inside an artery.

Plaque Attacks

Plaques from atherosclerosis can behave in different ways.

* They can stay within the artery wall. There, the plaque grows to a certain size and stops. "Because they don't block blood flow, these plaques may never cause any symptoms," says Stein.

* They can grow in a slow, controlled way into the path of blood flow. Eventually, they cause significant blockages. Pain on exertion (in the chest or legs) is the usual symptom.

* The worst-case scenario: plaques can suddenly rupture, allowing blood to clot inside an artery. In the brain, this causes a stroke; in the heart, a heart attack.

The plaques of atherosclerosis cause the three main kinds of cardiovascular disease:

* Coronary artery disease: Stable plaques in the heart's arteries cause angina (chest pain on exertion). Sudden plaque rupture and clotting causes heart muscle to die. This is a heart attack, or myocardial infarction.

* Cerebrovascular disease: Ruptured plaques in the brain's arteries causes strokes, with the potential for permanent brain damage. Temporary blockages in an artery can also cause transient ischemic attacks (TIAs), which are warning signs of stroke; however, there is no brain injury.

* Peripheral artery disease: Narrowing in the arteries of the legs caused by plaque. Peripheral artery disease causes poor circulation. This causes pain on walking and poor wound healing. Severe disease may lead to amputations.

Who Gets It

It might be easier to ask, who doesn't get atherosclerosis?

Atherosclerosis starts early. In autopsies of young American soldiers killed in action in the Korean and Vietnam wars, half to three-quarters had early forms of atherosclerosis.

And what about today, with our salads and StairMasters? A 2001 study of 262 apparently healthy people's hearts may surprise you:

* 51.9% had some atherosclerosis

* Atherosclerosis was present in 85% of those older than 50

* 17% of teenagers had atherosclerosis

No one had symptoms, and very few had narrowings in any arteries. This was very early disease, detectable only by special tests.

If you are 40 and generally healthy, you have about a 50% chance of developing serious atherosclerosis in your lifetime. The risk goes up as you get older. The majority of adults older than 60 have some atherosclerosis but often do not have noticeable symptoms.

There is good news. Rates of death from atherosclerosis have fallen by 25% since 30 years ago. This is thanks to both improved treatments and better lifestyles.

Between heart attacks, strokes, and peripheral vascular disease, though, atherosclerosis still causes more than 900,000 deaths in the U.S. each year. Diseases caused by atherosclerosis are the most common cause of death in the U.S.

How to Prevent It

Atherosclerosis is progressive, but it's also preventable. For example, nine risk factors are to blame for up to 90% of all heart attacks:

* Smoking

* High cholesterol

* High blood pressure

* Diabetes

* Abdominal obesity ("spare tire")

* Stress

* Not eating fruits and vegetables

* Excess alcohol intake (more than one drink for women, one or two drinks for men, per day)

* Not exercising regularly

You may notice all of these have something in common: You can do something about them! Experts agree that reducing your risk factors leads to a lower risk of cardiovascular disease.

For people at moderate or higher risk -- those who’ve had a heart attack or stroke, or who suffer angina -- taking a baby aspirin a day can be important. Aspirin helps prevent clots from forming. Ask your doctor before starting daily aspirin, as it can have side effects.
Atherosclerosis: Treatment

Once a blockage is there, it's generally there to stay. With medication and lifestyle changes, though, plaques may slow or stop growing. They may even shrink slightly with aggressive treatment.

* Lifestyle changes: Reducing the lifestyle risk factors that lead to atherosclerosis will slow or stop the process. That means a healthy diet, exercise, and no smoking. These lifestyle changes won't remove blockages, but they’re proven to lower the risk of heart attacks and strokes.

* Medicines:Taking medication for high cholesterol and high blood pressure will slow and perhaps even halt the progression of atherosclerosis, as well as lower your risk of heart attacks and stroke.

Using invasive techniques, physicians can also open up blockages from atherosclerosis, or go around them:

* Angiography and stenting: Cardiac catheterization with angiography of the coronary arteries is the most common angiography procedure performed. Using a thin tube inserted into an artery in the leg or arm, doctors can access diseased arteries. Blockages are visible on a live X-ray screen. Angioplasty (catheters with balloon tips) and stenting can often open up a blocked artery.

* Bypass surgery: Surgeons "harvest" a healthy blood vessel (often from the leg or chest). They use the healthy vessel to bypass a segment blocked by atherosclerosis.

These procedures involve a risk of complications. They are usually saved for people with significant symptoms or limitations caused by atherosclerosis.


What’s Your Personal Risk

When it comes to developing health risks from atherosclerosis, some people are at higher risk than others. But because atherosclerosis is silent until it's advanced, estimating one's health risk takes some educated guesswork.

How can you determine your risk? The risk factors are easy to identify. You can use the same tools your doctor uses to learn where you stand.

Your Atherosclerosis Health Risk: The Heart of the Matter

The best system for estimating atherosclerosis health risk considers complications relating to the arteries of the heart. Atherosclerosis in the heart is called coronary artery disease.

Although this strategy will only determine your risk for atherosclerosis in the coronary arteries of the heart, there are good reasons to start there:

* Atherosclerosis in one area usually means atherosclerosis is present elsewhere.

* Coronary artery disease is life-threatening: A first heart attack can occur without warning and be fatal.

To get started, first consider your medical history. If you've had one of these medical conditions, you most likely have atherosclerosis:

* Angina pectoris (heart-related chest pain)

* History of a stroke or heart attack

* Blockages in the carotid arteries (in the neck)

* Peripheral artery disease

These conditions are considered evidence of atherosclerosis. People with diabetes are also at high risk of developing the health risks associated with atherosclerosis. Guidelines for treating cholesterol in people with diabetes assume that atherosclerosis is already present.

Next, tally your risk factors for atherosclerosis:

* Family history of heart attacks in your immediate family

* High "bad" cholesterol (LDL level)

* Low "good" cholesterol (HDL level)

* Current smoking

* High blood pressure (140/90 or greater)

Be sure to share the information with your doctor.

The best estimates of atherosclerosis risk come from the Framingham Heart Study. Researchers have followed thousands of men and women and their children for more than 40 years.

Physicians sometimes use a tool to calculate atherosclerosis risk, based on the Framingham study. You can access this risk calculator yourself at:

http://hp2010.nhlbihin.net/atpiii/calculator.asp?usertype=prof

The American Heart Association has a similar tool, available at:

http://www.americanheart.org/presenter.jhtml?identifier=3003499

You'll need some information, including your blood pressure and cholesterol levels. The Framingham calculator provides your 10-year risk of having a heart attack or dying from heart disease.

Based on your Framingham risk, you'll fit in one of three categories:

Low risk: Less than a 10% risk of having a heart attack in the next 10 years. No further testing or treatment is needed, if you have no symptoms. You should reduce your risk even further with diet, exercise, blood pressure control, and smoking abstinence.

Moderate risk: A 10% to 20% risk of having a heart attack in the next 10 years. Here's the gray area. In addition to the healthy lifestyle improvements listed above, you may need additional treatment to lower cholesterol. Your doctor may recommend further testing to look for possible blockages in your heart.

Higher risk: Greater than 20% risk of having a heart attack in the next 10 years. Watch out: it's time to take atherosclerosis very seriously. You and your doctor should have an aggressive plan to reduce your risk factors. You probably should have a test to look for blockages.


Source from WebMD


Uncovers secrets behind butterfly wing patterns

University of California - The genes that make a fruit fly's eyes red also produce red wing patterns in the Heliconius butterfly found in South and Central America, finds a new study by a UC Irvine entomologist.

Bob Reed, assistant professor of ecology and evolutionary biology, discovered that genes involved in making insect eye pigments evolved over time to also make wing pigments in butterflies. This finding sheds light on the genetic causes of wing patterns and why, in the Heliconius, those patterns can vary widely from region to region.

"We found that evolution is achieved primarily through recycling old genes into new functions, as opposed to evolving entirely new genes from scratch," Reed said.

Results of the study appear online this week in the Proceedings of the Royal Society B.

Within one species of the butterfly genus Heliconius, more than 20 distinct wing patterns can exist in different geographic regions. Over time, the Heliconius evolves to look like local unrelated butterfly species that are poisonous to birds, a phenomenon called mimicry.

"It is a very basic textbook example of natural selection," Reed said. "If you look like you're poisonous, you're not going to get eaten and you can produce offspring."

Reed's study also explains under which conditions certain genes will cause a stripe on a Heliconius wing to become yellow or red.

W. Owen McMillan of the University of Puerto Rico and Lisa M. Nagy of the University of Arizona also worked on this study, which was funded by the National Science Foundation and a University of Arizona IGERT genomics fellowship.

UC Irvine has two additional butterfly experts -- Adriana Briscoe, who studies butterfly eyes and color vision, and Tony Long, who studies eyespot patterns on butterfly wings. All three scientists are members of the Department of Ecology and Evolutionary Biology in the School of Biological Sciences.


Research from University of California , Oct. 25, 2007


Broccoli protects your skin from UV radiation

WebMD Medical News - Add sunscreen to the list of broccoli’s health benefits. A new study suggests the potent vegetable may help protect the skin from sun damage.

Researchers found the compound sulforaphane, which is derived from broccoli sprouts, reduces the skin redness and inflammation caused by exposure to ultraviolet (UV) radiation.

Repeated sunburns are linked to a higher risk of skin cancer, and researchers say controlling the redness, known in medical terms as erythema, may be another way to fight skin cancer and sun-related skin damage.

Broccoli Skin Booster

In the study, researcher Paul Talalay of The Johns Hopkins University and colleagues examined the effects of sulforaphane on UV-induced erythema in six adults.

A solution containing sulforaphane derived from three-day old broccoli sprouts was applied to their skin before exposure to UV radiation using sun lamps.

The results showed the broccoli extract reduced redness by an average of 37% compared with untreated skin following UV exposure.

Researchers say the broccoli extract did not physically absorb the UV rays, but it appeared to work at the cellular level to prevent erythema. They say sulforaphane induces the formation of protective proteins in the skin and protects the skin from sun damage for several days.


By Jennifer Warner , Oct. 22, 2007 , WebMD Medical News


More women having both breasts removed

Breast is one of the precious part that women have. But a new research found that more women who have cancer in only one breast are getting both breasts removed. And all these happened in six years. While it's still a rare option, most breast cancer in U.S is treated by lumpectomy, removing just the tumor while saving the breast.

But the new study suggests 4.5 percent of breast cancer surgery in 2003 involved women getting cancerous and healthy breasts simultaneously removed, a 150 percent increase from 1998 - with no sign that the trend was slowing.

Researchers reported on Monday in the Journal of Clinical Oncology, young women are most likely to choose the aggressive operation. The concern is whether they're choosing in the heat of the moment - breast cancer surgery often is within two weeks of diagnosis - or with good understanding of its pros and cons.

"Are these realistic decisions or not?'' asks Dr. Todd Tuttle, cancer surgery chief at the University of Minnesota, who led the study after more women sought the option in his own hospital.

"I'm afraid that women believe having their opposite breast removed is somehow going to improve their breast cancer survival. In fact, it probably will not affect their survival,'' he said.

The American Cancer Society estimates 178,480 U.S. women will be diagnosed with breast cancer this year. About 40,460 will die of it.

Some women at high risk, because of notorious breast cancer genes or family history, choose preventive mastectomies before cancer ever strikes.


Adapted from Msnbc health news



Some breast cancers don't respond to chemotherapy

Breast Cancer Research - An analysis of the results of several studies confirm previous reports suggesting that chemotherapy offers little or no survival benefits for young women with estrogen receptor (ER)-positive breast cancers and, if given, it should not be the sole second-phase, or "adjuvant" therapy.

"Developing breast cancer at a young age is very worrying in terms of survival," lead researcher Dr. Jos J. A. van der Hage, from Leiden University in the Netherlands, said in a statement. "But some young women may be undergoing not only unpleasant but also unnecessary chemotherapy."

In the current analysis, the researchers examined data from 480 women with early-stage breast cancer enrolled in one of four EORTC (European Organization for Research and Treatment of Cancer) trials. All of the subjects were premenopausal - younger than 40 years of age - and the average follow-up period was 7.6 years.

During follow-up, 155 patients died or experienced a distant recurrence, according to the report appearing in the current online issue of Breast Cancer Research.

Patients with ER-positive cancers were significantly more likely to have a longer overall survival than those with ER-negative cancers, the team reports.

Among the patients who received prolonged adjuvant chemotherapy, however, the difference in survival rates was minimal (70 percent versus 75 percent, favoring the ER-negative group, and rates of metastasis-free survival were 59 percent versus 70 percent, respectively.

These results suggest that chemotherapy had a beneficial effect for women with ER-negative tumors, but had minimal or no effect on ER-positive cancers.

Similar survival differences were noted for women with or without progesterone receptor-positive tumors, the report indicates.

"Adjuvant chemotherapy is a well established, but ineffective treatment in ER-positive breast cancer patients aged 40 years or less," van der Hage emphasized. "Hormone responsiveness is the key to tailoring therapy in the future fight against this disease for young women."


Source : Breast Cancer Research, October 10, 2007

Elephants able to literally smell danger

Reuters - Elephants can literally sniff out danger, according to a study on Thursday that shows the animals can sniff out whether humans are friends or foes.

The study in Kenya found elephants detected both the scents and colors of garments worn by Masai tribesman who often come into conflict with the animals when herding cattle.

When detecting the scent of a Masai, the elephants turned up their trunks to orient themselves to the smell and then stampeded away until they reached cover in the tall grass.

"The degree with which the elephants are able to classify people hasn't been shown before in any animal," said Lucy Bates, a cognitive psychologist at the University of St. Andrews, who worked on the study published in Current Biology.

Working with the Amboseli Elephant Research Project in southern Kenya, the researchers presented the animals with clean clothing and material worn by either a Masai or Kamba tribesman.

They did not stampede when sniffing either clean clothes or those worn by Kamba tribesmen, farmers who pose little threat to the animals, Bates said.

"The reactions between the Masai and the Kamba were so different," Bates said in a telephone interview. "They weren't reacting as if it was the same predator."

To test their reactions further, the researchers presented the elephants with red material, the same color as the Masai's traditional costume, and plain white clothing.

When the animals spied red, they stamped their feet and shook their heads in an aggressive manner while the color white failed to spark such aggressive behavior, Bates said.

"The reaction with the Masai clothes was very intense," Bates said.

The findings could boost conservation efforts in Kenya focused on keeping people and pachyderms apart, Bates said.

The researchers suspect elephants across Africa are just as perceptive. "Elephants would likely have the same ability to make these discriminations across Africa but it would be for different groups," Bates said.


Fish can get insomnia too

Public Library of Science-Biology - Fish might not have eyelids, but they do sleep, and some suffer from insomnia, scientists reported on Monday.

California scientists studying sleep disorders in humans found that some zebrafish, a common aquarium pet, have a mutant gene that disrupts their sleep patterns in a way similar to insomnia in humans.

Zebrafish with the mutant gene slept 30 percent less than fish without the mutation. When they finally drifted off they remained asleep half as long as the normal fish, the researchers at the Stanford University School of Medicine said.

The mutant fish lacked a working receptor for hypocretin, a neuropeptide that is secreted in normal fish by neurons in the region of the brain that controls hunger, sex and other basic behaviors.

Zebrafish, also known as zebra danio, have become popular research subjects because they are cheaper to breed than mice and they have a backbone that better represents the human nervous system than fruit flies.

The researchers, led by Emmanuel Mignot, said they would look for fish that have a mutation that causes them to oversleep or never sleep in the hope of discovering if sleep-regulating molecules and brain networks developed through evolution.

"Many people ask the questions, 'Why are we sleeping?' and, 'What is the function of sleep?"' Mignot said. "I think it is more important to figure out first how the brain produces and regulates sleep. This will likely give us important clues on how and maybe why sleep has been selected by natural evolution and is so universal."


Report from Public Library of Science-Biology Oct. 16, 2007


Scientists discover new marine species

AP - Scientists exploring a deep ocean basin in search of species isolated for millions of years found marine life believed to be previously undiscovered, including a tentacled orange worm and an unusual black jellyfish.

Project leader Dr. Larry Madin said Tuesday that U.S. and Philippine scientists collected about 100 different specimens in a search in the Celebes Sea south of the Philippines.

Madin, of the Massachusetts-based Woods Hole Oceanographic Institution, said the sea is at the heart of the "coral triangle" bordered by the Philippines, Malaysia and Indonesia — a region recognized by scientists as having a high degree of biological diversity.

The deepest part of the Celebes Sea is 16,500 feet. The team was able to explore to a depth of about 9,100 feet using a remotely operated camera.

"This is probably the center where many of the species evolved and spread to other parts of the ocean, so it's going back to the source in many ways," Madin told a group of journalists, government officials, students and U.S. Ambassador Kristie Kenney and her staff.

The project involved the Woods Hole Oceanographic Institution and National Geographic Magazine in cooperation with the Philippine government, which also provided the exploration ship.

The expedition was made up of more than two dozen scientists and a group from National Geographic, including Emory Kristof, the underwater photographer who was part of the team that found the wreckage of the Titanic in 1985.

The group returned to Manila on Tuesday after spending about two weeks in the Celebes Sea off Tawi-Tawi, the Philippines southernmost provincial archipelago nearly 700 miles south of Manila.

Madin said the specimens they collected included several possibly newly discovered species. One was a sea cucumber that is nearly transparent which could swim by bending its elongated body. Another was a black jellyfish found near the sea floor.

The most striking creature found was a spiny orange-colored worm that had 10 tentacles like a squid, Madin said. "We don't know what it is ... it might be something new," he said.

He said it would take "a few more weeks" of research to determine whether the species are newly discovered. He expects to release a report by early next month.

Madin said the Celebes Sea, being surrounded by islands and shallow reefs, is partially isolated now and may have been more isolated millions of years ago, leading scientists to believe that "there may be groups of organisms that have been contained and kept within" the basin since then.

"That makes it an interesting place to go and look to see what we might find," he said.






How schizophrenia develops

National Institute of Mental Health - Schizophrenia may occur, in part, because of a problem in an intermittent on/off switch for a gene involved in making a key chemical messenger in the brain, scientists have found in a study of human brain tissue. The researchers found that the gene is turned on at increasingly high rates during normal development of the prefrontal cortex, the part of the brain involved in higher functions like thinking and decision-making – but that this normal increase may not occur in people with schizophrenia.

The study was funded by the National Institutes of Health’s National Institute of Mental Health (NIMH) and National Institute of Child Health and Human Development.

The gene, GAD1, makes an enzyme essential for production of the chemical messenger, called GABA. The more the gene is turned on, the more GABA synthesis can occur, under normal circumstances. GABA helps regulate the flow of electrical traffic that enables brain cells to communicate with each other. It is among the major neurotransmitters in the brain.

Abnormalities in brain development and in GABA synthesis are known to play a role in schizophrenia, but the underlying molecular mechanisms are unknown. In this study, scientists discovered that defects in specific epigenetic actions – biochemical reactions that regulate gene activity, such as turning genes on and off so that they can make substances like the GAD1 enzyme – are involved.

Results of the research were published in the October 17 issue of the Journal of Neuroscience, by Schahram Akbarian, MD, PhD, Hsien-Sung Huang, PhD student, and colleagues at the University of Massachusetts Medical School and Baylor College of Medicine.

“This discovery opens a new area for exploration of schizophrenia,” said NIMH Director Thomas R. Insel, MD. “Studies have yielded very strong evidence that schizophrenia involves a decrease in the enzymes, like GAD1, that help make the neurotransmitter GABA. Now we’re starting to identify the mechanisms involved, and our discoveries are pointing to potential new targets for medications.”

Another enzyme, Mll1, may play a role in the epigenetic actions. For genes to be turned on, temporary structural changes in certain proteins - histones - must take place to expose the genes' blueprints in DNA. The researchers found evidence that, in schizophrenia, changes in Mll1 activity may interfere with this process in histones whose alterations enable the GAD1 blueprint to be exposed.

The researchers also showed, in mice, that antipsychotic medications like clozapine appear to correct this epigenetic flaw. This raises the possibility of developing new medications aimed at correcting defects in the mechanisms involved.

Finding more precise molecular targets for development of new schizophrenia medications is a key effort, because it can lead to more effective treatments with fewer side effects. Clozapine and other current antipsychotic medications are effective for many patients, but not all, and they can cause side effects severe enough that some people choose to stop treatment.

The researchers also found that people with three different variations of the GAD1 gene – variations previously associated with schizophrenia – also were more likely to have indicators of a malfunction in brain development. Among them were indicators of altered epigenetic actions related to GABA synthesis.

“We’ve known that schizophrenia is a developmental disease, and that something happens in the maturation of the prefrontal cortex during this vulnerable period of life. Now we’re beginning to find out what it is, and that sets the stage for better ways of preventing and treating it,” Akbarian said.



Source: National Institute of Mental Health


Robotic System On Space Station Improved

Human Factors and Ergonomics Society - Software for a robotic extension of existing NASA technology for remote operations on the International Space Station has been shown to improve astronauts' performance on high-precision tasks. Using graphical overlay information, researchers were able to achieve significant results in efficiency and accuracy. The new technology can be added to existing flight hardware.

Researchers from NASA and Lockheed Martin have successfully tested software the robotic extension device.

James C. Maida, Charles K. Bowen, and John Pace developed the method for use with the Special Purpose Dexterous Manipulator, which works in conjunction with the current Space Station Remote Manipulator System (SSRMS).


Robotic devices on the ISS make it possible for astronauts to perform tasks without leaving the vehicle. Manipulating these devices is challenging, particularly in bright sunlight and deep darkness. Maida and colleagues employed augmented reality techniques to create a graphical informational overlay that can be used in simulations of robotic installation tasks to improve operator performance.

The installation task requires intense concentration by the astronaut to align an external orbital replacement unit (ORU) within ¼ inch and ½ degree at its installation point. The task is accomplished by viewing the scene of the installation through a camera and manipulating robotic arms. The researchers used enhanced live video with dynamic overlay information superimposed on features in the operators' field of view to guide them regarding the direction of motion of the robotic arm, the type of motion, and the correct position for installation.

Twelve highly skilled robotics operators were tested on four installation tasks under conditions of dynamic sunlight and very dark nights with and without the overlay. In all cases, accuracy and efficiency improved significantly when using the new overlay system, and all 12 operators found the overlay information extremely helpful in performing the ORU alignment operation. Time to complete the task was also reduced.

The researchers conclude that because the graphics are relatively simple and the computational requirements are low, the overlay system could be implemented on existing flight hardware used on the space shuttle and the ISS.

They presented their research paper, “Improving Robotic Operator Performance Using Augmented Reality,” at the Human Factors and Ergonomics Society 51st Annual Meeting on October 3 in Baltimore, Maryland.


Research news from Human Factors and Ergonomics Society , October 15, 2007


A Smart Bra to Find Breast Cancer

kyla cole<-- While the conventional bra pictured here does little if anything to help women detect breast cancer, one U.K inventor says his "smart bra" may one day help women monitor themselves for early signs of breast cancer. (ABCNEWS)

abc News - Called a "smart bra," the device incorporates a series of microwave antennae to detect temperature changes in the breast that point to early stage breast cancer. Professor Elias Siores, director of the Centre for Research and Innovation at the University of Bolton in the United Kingdom and inventor of the smart bra, says the device can detect cancer before the tumor can develop and spread into the surrounding areas.

The concept at play is known as thermography, the detection of subtle temperature changes within the breast. Spot elevations in temperature, Siores says, could denote an increase to blood flow to a developing tumor.


Siores says his device would use passive microwaves, essentially bringing technology currently used to pinpoint the location of submarines and distant stars beneath the blouses of women to find breast cancer.

"If we can identify [cancer-related] transformations that emanate these heat signatures, we may be able to detect these cancers early," he said, adding that the device may even be used to evaluate the effectiveness of any breast cancer treatment its wearer is undergoing.

Siores adds that an audible or visual alarm would be incorporated into the bra, which would alert wearers to the potential need for further medical expert diagnosis and assessment.

Experts Fear Wardrobe Malfunction

But physicians involved in the treatment of cancer say that while thermography has been studied as a possible way to detect cancer, as yet the accuracy of such methods leaves much to be desired.

"First of all, there are benign growths and nonmalignant inflammatory changes, which might also increase blood flow," said Anne Rosenberg, a breast surgeon at Philadelphia's Thomas Jefferson University Hospital.

"Thermography has been around for 20 years, but has not been sensitive or specific enough to replace traditional imaging, such as mammography," Rosenberg said. "This technique of using the microwave antennae to pick up and record temperature changes in the breast, with an alarm if the threshold is exceeded, would need to be validated in a clinical trial to determine whether it is sensitive or specific with regard to identifying cancers … since not all of these temperature changes will be due to a cancer."

Jay Brooks, chairman of the Department of Hematology/Oncology at Ochsner Health System in New Orleans, agrees, adding that the method "sounds somewhat speculative, since most cancers are less than one centimeter [in diameter]." A device that could reliably detect the presence of such small tumors lurking beneath the tissues of the breast would have to be tremendously sensitive.

And in addition to concerns over the sensitivity of such a device, Robertson worries about its specificity — in other words, its ability to distinguish a temperature change from breast cancer from other unrelated temperature changes.

"Not only would it give a false sense of security until a cancer would become a certain size, but wouldn't it also make more anxiety as the alarm would sound?" she said.

Are Prospects Overpadded?

Siores is the first to admit that the smart bra is still very much an idea in development; a prototype is expected only next year.

"We need to measure the technology against known techniques, namely ultrasound and mammograms," he said.

And he adds that it would be a mistake to view the smart bra as a substitute for routine mammograms and other diagnostic techniques. "We do not claim that," Siores said.

But at a time when researchers are devoting their attention to proven methods of breast cancer detection, such as mammograms and ultrasound, both Brooks and Rosenberg agree that the smart bra is unlikely to garner widespread support because of its speculative nature.

Regardless of the eventual fate of the smart bra, however, Rosenberg says early detection is an important step when it comes to beating breast cancer.

"Clearly, we realize that early [detection] is the key to better survival for women who develop breast cancer and so researchers look for ways to find cancers at the earliest stage," she said. "Traditional approaches include mammography, and now MRI, along with physical examination."





Smoking may develop disability in those with MS (Multiple Sclerosis)

Persons with multiple sclerosis (MS) who smoke risk increasing the amount of brain tissue shrinkage, a consequence of MS, and the subsequent severity of their disease, new research conducted at the Buffalo Neuroimaging Analysis Center (BNAC) at the University at Buffalo has shown.

The results are based on magnetic resonance images (MRIs) of smokers and nonsmokers in 368 MS patients treated in UB’s Jacobs Neurological Institute, the university’s Department of Neurology in its School of Medicine and Biomedical Sciences.

Results of the research were presented Saturday (Oct. 13, 2007) at the 23rd Congress of the European Committee for the Treatment and Research in Multiple Sclerosis in Prague, Czech Republic.

“Cigarette smoke has many properties that are toxic to the central nervous system, and cigarette smoking has been linked to higher susceptibility and risk of progressive multiple sclerosis,” said Robert Zivadinov, M.D., Ph.D., UB professor of neurology, director of the BNAC and first author on the study.

“Interactions between cigarette smoking and genetic and immunologic factors may point to mechanisms in disease pathogenesis. No previous studies have investigated differences in MRI characteristics between MS cigarette smokers and MS nonsmokers,” he said.

The study included patients from the three most common forms of MS: 253 had relapsing-remitting MS -- acute attacks with full or partial recovery; nine had primary-progressive MS -- steady worsening from onset; and 90 had secondary-progressive MS, characterized by occasional attacks and sustained progression. Another 16 participants had experienced their first MS onset.

Patients ranged in age from 35-55 years, and had been living with MS for an average of 13 years. The Expanded Disability Status Scale (EDSS), an average number derived from measures of various functions of the central nervous system based on scales ranging from 0 to 10, was 3.1. The higher the number, the greater the disability.

Within the study cohort, 128 had a history of smoking: 96 were active smokers who had smoked more than 10 cigarettes-per-day in the three months prior to the study start, and 32 were former

smokers who had smoked cumulatively for at least 6 months sometime in the past. The remaining 240 participants had no active smoking exposure.

The average smoking duration was 17.6 years and the average number of cigarettes smoked per day was 17. There were no significant differences between smokers and nonsmokers based on age, disease duration, disease course and total lifetime use of disease-modifying drugs.

Analysis and comparison of the MRIs from smokers and nonsmokers showed that the smokers had significantly higher disability scores and lower brain volume than the nonsmokers. There also was a significant relationship between a higher number of packs-per-day smoked and lower volume of the neocortex, the portion of the cerebral cortex that serves as the center of higher mental functions for humans.

There were no significant differences in any of the clinical findings between active and former smokers.

“Smoking appears to influence the severity of MS and to accelerate brain atrophy and the disruption of the blood-brain barrier in MS patients,” said Zivadinov. “MS patients should be counseled to stop smoking, or at least to cut down so they can preserve as much brain function as possible.”

Additional researchers on the study, all from the BNAC or the JNI, were Milena Stosic, M.D., Nadir Abdelrahman, M.D., Barbara E. Teter, Ph.D., Frederick E. Munschauer, M.D., Sara Hussein, Jackie Durfee, Michael G. Dwyer, Jennifer L. Cox, Ph.D., Nima Hani, Fernando Nussenbaum and Bianca Weinstock-Guttman, M.D.


Research from University at Buffalo


Mosques from worldwide

Mecca - Saudi Arabia

Mosque jama - India



masjid kuala ibai hdr wallpaperKuala Ibai mosque, Terengganu, Malaysia





Omar Ali Saifuddin Mosque, Brunei

Waqif Mosque, Brunei


Putrajaya Mosque - Malaysia




The Faisal Mosque - Islamabad, Pakistan


Largest mosque


Nabawi Mosque - Medina




Istiqlal Mosque - Jakarta, Indonesia




Shah Alam Mosque - Malaysia







Blue Mosque - Istanbul, Turkey




Masjidil Haram / Mecca - Saudi Arabia




King Hassan II mosque




Ayasofya Mosque - Turkey



Mosque from Cambodia




Mosque from Dubai




Mosque from Malaysia





Barur Rahman mosque - Aceh Besar, Sumatera, Indonesia




Al Aqsa mosque - Palestine




Mosques from worldwide



Source : From various sources (i'm sorry, i post this long time ago, i forgot from where i got them).





U-Tsu-Shi-O-Mi interactive virtual humanoid

Robot Watch - U-Tsu-Shi-O-Mi is an interactive “mixed reality” humanoid robot that appears as a computer-animated character when viewed through a special head-mounted display. A virtual 3D avatar that moves in sync with the robot’s actions is mapped onto the machine’s green cloth skin (the skin functions as a green screen), and the sensor-equipped head-mounted display tracks the angle and position of the viewer’s head and constantly adjusts the angle at which the avatar is displayed. The result is an interactive virtual 3D character with a physical body that the viewer can literally reach out and touch.




Researcher Michihiko Shoji, formerly of NTT DoCoMo, helped create U-Tsu-Shi-O-Mi as a tool for enhancing virtual reality simulations. He is now employed at the Yokohama National University Venture Business Laboratory, where he continues to work on improving the virtual humanoid. The system, which currently requires a lot of bulky and expensive equipment to run, will likely see its first real-world applications in arcade-style video games. However, Shoji also sees a potential market for personal virtual humanoids, and is looking at ways to reduce the size and cost to make it suitable for general household use.

In addition to the above, ASIAGRAPH technology provides three-dimensional images and a lot of media art, and research work is on exhibit. And virtual reality technology researchers study released by the "technical" and many prominent people and also to be held by Talk.






Source : Robot Watch