Wednesday, July 10, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Ancient Egyptian leader makes surprise appearance at archaeological dig in Israel

As modern Egypt searches for a new leader, Israeli archaeologists have found evidence of an ancient Egyptian leader in northern Israel. At a site in Tel Hazor National Park, north of the Sea of Galilee, archeologists have unearthed part of a unique Sphinx belonging to one of the ancient pyramid-building pharaohs.

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'Scent device' could help detect bladder cancer

Researchers in the United Kingdom have built a device that can read odors in urine to help diagnose patients with early signs of bladder cancer.

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Irregular bed times curb young kids' brain power: And may have knock-on effects on health throughout life

Going to bed at different times every night throughout early childhood seems to curb children's brain power, finds a large, long term study.

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Health-related website search information may be leaked to third-party tracking entities

Patients who search on free health-related websites for information related to a medical condition may have the health information they provide leaked to third party tracking entities through code on those websites, according to new research.

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Seizures late in life may be an early sign of Alzheimer's disease

Patients with epilepsy who had amnestic mild cognitive impairment or Alzheimer's disease presented earlier with cognitive decline than patients who did not have epilepsy, according to a new report.

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Improved interpretation of volcanic traces in ice

How severely have volcanoes contaminated the atmosphere with sulfur particles in past millennia? To answer this question, scientists use ice cores, among others, as climate archives. Atmospheric scientists have now modeled the global distribution of sulfur particles following large eruptions. The study could significantly improve the interpretation of ice cores.

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Putting the right worker in the right job

A new study suggests that if an employee's personality doesn't fit the job requirements, he or she will not be motivated by external factors.

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Clues from an ancient Viking trading centre: A tantalizing hint of an ancient trading town

It was a routine archaeological dig, necessitated by the expansion of Norway's main north-south highway, the E6, just north of Trondheim, the country's third largest city. But the finds surprised archaeologists, who now believe they have solved a centuries-old puzzle posed in Norse sagas.

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School policies reduce student drinking –- if they're perceived to be enforced

Anti-alcohol policies on middle and high school campuses do work, but only if students believe they will be enforced. Harsh punishment doesn't deter drinking, but counseling does.

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Wildfires may contribute more to global warming than previously predicted

Wildfires produce a witch's brew of carbon-containing particles, as anyone downwind of a forest fire can attest. But measurements taken during the 2011 Las Conchas fire near Los Alamos National Laboratory show that the actual carbon-containing particles emitted by fires are very different than those used in current computer models, providing the potential for inaccuracy in current climate-modeling results.

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Dip, dip, hooray -- Kids eat more veggies with flavored dips

Many parents have a difficult time persuading their preschool-aged children to try vegetables, let alone eat them regularly. Food and nutrition researchers have found that by offering a dip flavored with spices, children were more likely to try vegetables -- including those they had previously rejected.

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Chemical/bioengineers use adhesion to combine advantages of silicones and organic materials

Bioengineers have found a way to strongly adhere hydrogels to hydrophobic silicone substrates, an innovation that provides a valuable new tool for microscale biotechnology.

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Chemistry riddle solved

Chemists have explained the structure of a non-classical carbocation. They have captured the 2-norbornyl cation as a crystal and determining beyond doubt the structure of this unusual and instable carbon compound. The 2-norbornyl cation is a non-classical carbocation, a molecule with a positively charged carbon atom that enters into five instead of three bonds with other atoms.

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Outdated practice of annual cervical-cancer screenings may cause more harm than good

For decades, women between the ages of 21 and 69 were advised to get annual screening exams for cervical cancer. In 2009, however, accumulating scientific evidence led major guideline groups to agree on a new recommendation that women be screened less frequently: every three years rather than annually.

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Tiny new catfish species found in Rio Paraíba do Sul basin, Brazil

A new diminutive species of catfish was found in Rio Paraíba do Sul basin in Brazil. The genus to which the new Pareiorhina hyptiorhachis belongs represents a group of species endemic to Brazil. Although the new species is only around 3 cm in length it is still larger than the smallest catfish that is only 1 cm when sexually mature.

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Novel nanoparticle delivers powerful RNA interference drugs

Silencing genes that have malfunctioned is an important approach for treating diseases such as cancer and heart disease. One effective approach is to deliver drugs made from small molecules of ribonucleic acid, or RNA, which are used to inhibit gene expression. The drugs, in essence, mimic a natural process called RNA interference.

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Contaminated ultrasound gel tied to outbreak of healthcare-associated infections

After a 2011 outbreak of P. aeruginosa, investigators determined contaminated ultrasound gel was the source of bacteria causing the healthcare-associated infection. The findings emphasize the need for increased scrutiny of contaminated medical products.

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Your primary school language reveals if you move away or stay behind

The way you speak in primary school reveals if you will stay behind in your native part of the country or head for the big city to get an education, according to new research.

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Space-time is not the same for everyone

Before the Big Bang, space-time as we know it did not exist. So how was it born? The process of creating normal space-time from an earlier state dominated by quantum gravity has been studied for years. Recent analyses suggest a surprising conclusion: not all elementary particles are subject to the same space-time.

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Suspicions confirmed: Brain tumors in children have a common cause

An overactive signaling pathway is a common cause in cases of pilocytic astrocytoma, the most frequent type of brain cancer in children. In all 96 cases studied, researchers found defects in genes involved in a particular pathway. Hence, drugs can be used to help affected children by blocking components of the signaling cascade.

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Evolution too slow to keep up with climate change

Many vertebrate species would have to evolve about 10,000 times faster than they have in the past to adapt to the rapid climate change expected in the next 100 years, a new study has found.

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Losing weight over the phone

Weight loss interventions delivered via conference calls by primary care provider staff are effective, according to new research. An intensive lifestyle intervention, proven to help people lose weight to prevent diabetes, also works in primary care when delivered over the telephone to obese patients with metabolic syndrome. Group telephone sessions appear to be particularly effective for greater weight loss.

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Live from the hen's egg

Like a contortionist, twisted the chick is lying in its eggshell, brain, eyes, and beak visible in levels of grey. In small white circles, the flowing blood of the active chick flashes again and again on the MRI system's monitor. The chick bumps with its head back and forth and finally cracks the eggshell. Scientists have now managed to film the natural embryonic development and hatching of a chicken in real time through MRI. To accomplish this, the researchers scanned fertilized eggs in a clinical MRI system with a unique imaging technique at an acquisition speed of 12 frames per second.

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Astronomers witness birth of Milky Way's most massive star

Scientists have observed in unprecedented detail the birth of a massive star within a dark cloud core about 10,000 light years from Earth.

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Vascular link in Alzheimer's disease with cognition

Researchers have found that, across a variety of neurodegenerative diseases, cerebrovascular disease affecting circulation of blood in the brain was significantly associated with dementia. The researchers contend that people already exhibiting clinical features of Alzheimer's disease and other memory impairments may benefit from effective therapies currently available to reduce vascular problems.

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The study of resting brain connections predicts learning ability

An innovative neurocognitive study shows that the individual variability that exists in brain connections affects people's learning ability and, in turn, the learning process produces a change in brain networks associated with the trained areas.

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Big name for a small worm

Biologists have named a newly discovered nematode after a German Nobel laureate.

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Researchers identify specific fetal antigens attacked by maternal antibodies

Researchers have identified the specific antibodies that target fetal brain proteins in the blood of a subset of women whose children are diagnosed with autism. The finding is the first to pinpoint a specific risk factor for a significant subset of autism cases, as well as a biomarker for drug development and early diagnosis. The researchers have named autism related to these antibodies "Maternal Autoantibody-Related," or MAR autism.

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Exposure to maternal antibodies affects behavior, researchers find

Researchers have found that prenatal exposure to specific combinations of antibodies found only in mothers of children with autism leads to changes in the brain that adversely affect behavior and development.

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Bat that sings like a bird is highly tuned to social circumstance

New research shows that Brazilian free-tailed bats (Tadarida brasiliensis) vary the way elements are combined in their songs (i.e. syntax) in response to different social contexts, which is exceedingly rare among non-human mammals.

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Nanomaterial to help reduce carbon dioxide emissions

Researchers have developed a new nanomaterial that could help reduce carbon dioxide emissions from coal-fired power stations.

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Huge iceberg breaks away from the Pine Island glacier in the Antarctic

On July 8, 2013, a huge area of the ice shelf broke away from the Pine Island glacier, the longest and fastest flowing glacier in the Antarctic, and is now floating in the Amundsen Sea in the form of a very large iceberg.

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Plain surfaces transformed into low-cost touch screens

A low cost system, based on the principles of vibration and imaging that is able to track the movements of multiple fingers and of objects, can turn almost any surface into a touch-screen.

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Contribution of Greenland ice sheet to sea-level rise will continue to increase

The contribution of the Greenland ice sheet to sea-level rise will continue to increase, experts say.

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Cloud brightening to cool seas can protect coral reefs: Targeted cooling could offer a 50-year 'breathing space' for coral protection

The seeding of marine clouds to cool sea surface temperatures could protect threatened coral reefs from being bleached by warming oceans. Recent research proposes that a targeted version of the geo-engineering technique could give coral a fifty year 'breathing space' to recover from acidification and warming.

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Jealousy can drive us to view ourselves more like our rivals

If you see your partner flirt with someone else, you may feel hurt, angry, and jealous. The last thing you might expect is to start thinking of yourself more like your rival. New research suggests just that: that jealousy can prompt people to change how they view themselves relative to competitors for their partners' attention.

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Excessive cerebral spinal fluid and enlarged brain size in infancy are potential biomarkers for autism

Children who were later diagnosed with autism spectrum disorder had excessive cerebrospinal fluid and enlarged brains in infancy, a new study has found, raising the possibility that those brain anomalies may serve as potential biomarkers for the early identification of the neurodevelopmental disorder.

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Where do astronauts go when they need 'to go?'

The first American man in space had no place "to go," and urinating in space was a tough problem for engineers to solve. A new article discusses the considerations necessary to accommodate this most basic physiological function.

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How early Earth kept warm enough to support life

Solving the "faint young sun paradox" -- explaining how early Earth was warm and habitable for life beginning more than three billion years ago even though the sun was 20 percent dimmer than today -- may not be as difficult as believed, says a new study.

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Don't worry, be healthy: Cheerful people significantly less likely to suffer a coronary event

People with cheerful temperaments are significantly less likely to suffer a coronary event such as a heart attack or sudden cardiac death, new Johns Hopkins research suggests.

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IBEX spacecraft images the heliotail, revealing an unexpected structure

NASA's Interstellar Boundary Explorer spacecraft recently provided the first complete pictures of the solar system's downwind region, revealing a unique and unexpected structure.

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