الأحد، 4 مايو 2014

ScienceDaily: Top News

ScienceDaily: Top News


Synthesized 'solar' jet fuel: Renewable kerosene from sunlight, water and carbon dioxide

Posted: 03 May 2014 03:49 PM PDT

With the first ever production of synthesized "solar" jet fuel, the EU-funded SOLAR-JET project has successfully demonstrated the entire production chain for renewable kerosene obtained directly from sunlight, water and carbon dioxide, therein potentially revolutionizing the future of aviation. This process has also the potential to produce any other type of fuel for transport applications, such as diesel, gasoline or pure hydrogen in a more sustainable way.

Vibrating capsule shows promising results in treating chronic constipation: Non-pharmacological therapy

Posted: 03 May 2014 11:12 AM PDT

An oral capsule that vibrates as it moves through the digestive tract has shown notable promise as a non-pharmacological treatment for constipation, according to new research. The capsule, which houses a small engine inside, is programmed to begin vibrating six to eight hours after swallowing. The vibrations (mechanical stimulations) cause contractions in the intestine, which help move stool through the digestive tract.

Lower verbal test score for toddlers who play non-educational games on touch screens

Posted: 03 May 2014 05:27 AM PDT

A recent study examined infants 0-3 years old that used touch-screen devices to determine if their use was of any educational benefit to infants and toddlers. The study showed that children who played non-educational games using touch-screen devices had lower verbal scores upon testing.

Smoking during pregnancy may raise risk for heart defects in babies

Posted: 03 May 2014 05:27 AM PDT

Women who smoke during pregnancy may be putting their newborns at risk for congenital heart defects, and the more they smoke, the higher the risk, according to a new study.

Nightmares may signal a child is being bullied

Posted: 03 May 2014 05:27 AM PDT

Many children who are bullied suffer in silence. The trauma can lead to anxiety, depression, psychotic episodes and even suicide. There may be a way to identify victims of bullying before they experience serious mental health problems, according to a new study.

Many infants still not placed on their backs to sleep

Posted: 03 May 2014 05:27 AM PDT

Since 1994, parents have been urged to put their babies to sleep on their backs to reduce the risk of sudden infant death syndrome. It appears many caregivers have not gotten the message, and health care providers have not done enough to educate families.

A cup of coffee a day may keep retinal damage away, study shows

Posted: 02 May 2014 06:30 PM PDT

Coffee drinkers, rejoice! Aside from java's energy jolt, food scientists say you may reap another health benefit from a daily cup of joe: prevention of deteriorating eyesight and possible blindness from retinal degeneration due to glaucoma, aging and diabetes.

Reducing just six risk factors could prevent 37 million deaths from chronic diseases over 15 years

Posted: 02 May 2014 05:47 PM PDT

Reducing or curbing just six modifiable risk factors -- tobacco use, harmful alcohol use, salt intake, high blood pressure and blood sugar, and obesity -- to globally-agreed target levels could prevent more than 37 million premature deaths over 15 years, from the four main non-communicable diseases (NCDs): cardiovascular diseases, chronic respiratory disease, cancers, and diabetes, according to new research.

Inbred wolves struggle, moose proliferate at Isle Royale National Park

Posted: 02 May 2014 05:47 PM PDT

Inbreeding is killing off the wolves of Isle Royale National Park, and as a result, the moose are proliferating, threatening the vegetation on the remote Lake Superior island.

For the first time, proof of what hormone replacement therapy does to genes involved in breast cancer

Posted: 02 May 2014 02:20 PM PDT

Researchers have measured activity of genes associated with breast cancer in women before and while, they took different types of HRT. They found that an HRT used in the WHI trial had a greater activating effect on these genes than a "natural" formulation applied via an estrogen gel applied to the skin in combination with oral progesterone. This shows that varying the HRT and the way it is taken can have very significant effects on the genes associated with breast cancer.

The science of extraterrestrial Olympics, Brad Pitt's punches and Breaking Bad gore

Posted: 02 May 2014 05:14 AM PDT

Students have applied sophisticated scientific principles to pop culture scenarios -- with intriguing results. How would athletes fare if the Winter Olympics were held on Saturn's moon Enceladus? How realistic was the grizzly downfall of one of Walter White's most bitter rivals in Breaking Bad? And just how forceful was Brad Pitt's character One-Punch Mickey in the film Snatch?

Many Ivy League students don't view ADHD medication misuse as cheating: 18 percent use stimulants to help them study

Posted: 01 May 2014 10:26 AM PDT

Nearly one in five students at an Ivy League college reported misusing a prescription stimulant while studying, and one-third of students did not view such misuse as cheating, according to a new study. Stimulants are used to treat attention-deficit/hyperactivity disorder (ADHD). Recent studies have shown that students without ADHD are misusing these medications in hopes of gaining an academic edge.

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