Τετάρτη 22 Ιανουαρίου 2014

ScienceDaily: Top News

ScienceDaily: Top News


Study: Electric drive vehicles have little impact on US pollutant emissions

Posted: 21 Jan 2014 11:38 AM PST

A new study indicates that even a sharp increase in the use of electric drive passenger vehicles by 2050 would not significantly reduce emissions of high-profile air pollutants carbon dioxide, sulfur

Different sponge species have highly specific, stable microbiomes

Posted: 21 Jan 2014 10:10 AM PST

Scientists have shown that different species of Hexadella sponges each have a highly specific and stable microbiome, not only in terms of the most abundant members of the associated microbial

Depression higher than previously reported in people with severe rheumatoid arthritis

Posted: 21 Jan 2014 10:09 AM PST

Levels of depression and anxiety in people with severe rheumatoid arthritis are higher than previously reported, according to new research. As a result of their findings, a multi-center team says

Researchers discover an epigenetic lesion in hippocampus of Alzheimer's

Posted: 21 Jan 2014 10:09 AM PST

New research demonstrates, for the first time, the existence of an epigenetic lesion in the hippocampus of the brain of patients with Alzheimer's

Air pollution from Asia affecting world's weather

Posted: 21 Jan 2014 10:00 AM PST

Extreme air pollution in Asia is affecting the world's weather and climate patterns, according to a

Engineering new properties on ultra-thin nanomaterials: Tool opens door for design of new phases of materials

Posted: 21 Jan 2014 08:37 AM PST

Physicists have engineered novel magnetic and electronic phases in the ultra-thin films of in a specific electronic magnetic material, opening the door for researchers to design new classes of

Bio-inspired robotic device could aid ankle-foot rehabilitation

Posted: 21 Jan 2014 08:34 AM PST

A soft, wearable device that mimics the muscles, tendons and ligaments of the lower leg could aid in the rehabilitation of patients with ankle-foot disorders such as drop foot, said a robotics

Hospital water taps contaminated with bacteria

Posted: 21 Jan 2014 08:34 AM PST

New research finds significantly higher levels of infectious pathogens in water from faucet taps with aerators compared to water from deeper in the plumbing system. Contaminated water poses an

Training the brain using neurofeedback

Posted: 21 Jan 2014 08:34 AM PST

A new brain-imaging technique enables people to "watch" their own brain activity in real time and to control or adjust function in predetermined brain regions. The study is the first to

Depressive symptoms linked to adult-onset asthma in African-American women

Posted: 21 Jan 2014 08:34 AM PST

According to a new study, African-American women who reported high levels of depressive symptoms had a greater likelihood of adult-onset asthma compared to women who reported fewer depressive

Seeing things: A new transparent display system could provide heads-up data

Posted: 21 Jan 2014 08:34 AM PST

Scientists have developed a new approach to produce transparent projection screens. Their result paves the way for a new class of transparent displays with many attractive features, including wide

Physicists quantify temperature changes in metal nanowires

Posted: 21 Jan 2014 08:33 AM PST

Physicists have demonstrated the capability of measuring temperature changes in very small 3-D regions of

Study finds decreased life expectancy for MS patients

Posted: 21 Jan 2014 07:42 AM PST

The first large scale study in the US on the mortality of patients with multiple sclerosis has been published and provides new information about the life expectancy of people with the

Anti-swine flu vaccination linked to increased risk of narcolepsy in young adults

Posted: 21 Jan 2014 07:41 AM PST

Pandemrix is an influenza vaccination, created in 2009 to combat H1N1, known as Swine Flu. Now, a team of clinicians testing the vaccine for links to immune-related or neurological diseases have

Staying cool in the nanoelectric universe by getting hot

Posted: 21 Jan 2014 07:41 AM PST

As smartphones, tablets and other gadgets become smaller and more sophisticated, the heat they generate while in use increases. This is a growing problem because it can cause the electronics inside

How to improve HPV vaccination rates? It starts with physicians

Posted: 21 Jan 2014 07:41 AM PST

The risk of developing cervical cancer can be significantly decreased through HPV vaccination. Despite calls for universal vaccination for girls ages 11-12, the most recently published U.S. data

Energy-dense sugar battery created

Posted: 21 Jan 2014 06:30 AM PST

A new sugar battery that could be on the market and powering the world's gadgets in three years has an energy density and order of magnitude higher than

High-protein diets, like the popular Dr. Dukan diet, increase the risk of developing kidney disease in rats, study suggests

Posted: 21 Jan 2014 06:30 AM PST

An experiment done in rats shows a high-protein diet increases the chance of developing kidney stones and other renal

Changing landscapes not global warming to blame for increased flood risk

Posted: 21 Jan 2014 06:29 AM PST

A timely article considers the findings of an international report on flood risk, and the possible linkage with climate change/global warming and an increase in global and regional

The brain's RAM: Rats, like humans, have a 'working memory'

Posted: 21 Jan 2014 06:29 AM PST

Thousands of times a day, the brain stores sensory information for very short periods of time in a working memory, to be able to use it later. A research study has shown, for the first time, that

Longer screening intervals possible with HPV-based tests

Posted: 21 Jan 2014 06:29 AM PST

A new study finds that testing for human papilloma virus (HPV) allows for longer time between screening tests when compared to cytology-based

Combining health, environment in food production

Posted: 21 Jan 2014 06:29 AM PST

Healthy food products that are produced in an environmentally-friendly manner will boost the health of the Swiss population while protecting natural resources. A new study also aims to identify new

Great lakes evaporation study dispels misconceptions, points to need for expanded monitoring program

Posted: 21 Jan 2014 06:27 AM PST

The recent Arctic blast that gripped much of the nation will likely contribute to a healthy rise in Great Lakes water levels in 2014, new research shows. But the processes responsible for that

A 21st century adaptation of the Miller-Urey origin of life experiments

Posted: 21 Jan 2014 06:27 AM PST

Scientists have developed a modern approach to a famed experiment that explored one of the most intriguing research questions facing scientists today —- the origin of life on

Rosetta: 'Sleeping beauty' wakes up from deep space hibernation

Posted: 20 Jan 2014 08:11 AM PST

It was a fairy-tale ending to a tense chapter in the story of the Rosetta space mission this evening as the European Space Agency heard from its distant spacecraft for the first time in 31

Toddlers' aggression strongly associated with genetic factors

Posted: 20 Jan 2014 04:24 PM PST

A new study provides greater understanding of how to address childhood aggression, and suggests that it is strongly associated with genetic factors in the

Middle-school girls continue to play soccer with concussion symptoms

Posted: 20 Jan 2014 02:34 PM PST

Concussions are common among middle-school girls who play soccer, and most continue to play with symptoms, according to a

Boosting vitamin D could slow progression, reduce severity of multiple sclerosis

Posted: 20 Jan 2014 02:34 PM PST

For patients in the early stages of multiple sclerosis, low levels of vitamin D were found to strongly predict disease severity and hasten its

Made in China for us: Air pollution tied to exports

Posted: 20 Jan 2014 02:34 PM PST

Chinese air pollution blowing across the Pacific is often caused by manufacturing of goods for export to the US and Europe, according to

Uninsured patients less likely to be transferred between hospitals, researchers find

Posted: 20 Jan 2014 02:34 PM PST

Uninsured patients with a variety of common medical diagnoses are significantly less likely to be transferred between hospitals for treatment, according to a new study. They also found that women,

Vancouver: Nearby Georgia basin may amplify ground shaking from next quake

Posted: 20 Jan 2014 02:34 PM PST

Tall buildings, bridges and other long-period structures in Greater Vancouver may experience greater shaking from large earthquakes than previously thought due to the amplification of surface waves

Cocaine users enjoy social interactions less

Posted: 20 Jan 2014 02:33 PM PST

Regular cocaine users have difficulties in feeling empathy for others and they exhibit less prosocial behavior. A study now suggests that cocaine users have social deficits because social contacts

DNA barcodes change view on how nature is structured

Posted: 20 Jan 2014 02:33 PM PST

Understanding who feeds on whom and how often is the basis for understanding how nature is built and works. A new study now suggests that the methods used to depict food webs may have a strong impact

Daily rhythms of our genes are disrupted when sleep times shift

Posted: 20 Jan 2014 02:33 PM PST

A new study found that the daily rhythms of our genes are disrupted when sleep times

Radiation before surgery more than doubles mesothelioma survival

Posted: 20 Jan 2014 02:32 PM PST

Results of clinical research that treated mesothelioma with radiation before surgery show the three-year survival rate more than doubled for study participants afflicted with this deadly disease,

People who enjoy life maintain better physical function as they age

Posted: 20 Jan 2014 09:14 AM PST

People who enjoy life maintain better physical function in daily activities and keep up faster walking speeds as they age, compared with people who enjoy life less, according to a new

FAK helps tumor cells enter bloodstream

Posted: 20 Jan 2014 09:14 AM PST

Cancer cells have something that every prisoner longs for -— a master key that allows them to escape. A new study describes how a protein that promotes tumor growth also enables cancer cells to use

First infrared satellite monitoring of peak pollution episodes in China

Posted: 20 Jan 2014 06:55 AM PST

Plumes of several anthropogenic pollutants (especially particulate matter and carbon monoxide) located near ground level over China have for the first time been detected from space. The work was

Smoking late in pregnancy reduces baby's birth weight

Posted: 20 Jan 2014 06:55 AM PST

A doctoral dissertation finds that every cigarette a mother smokes a day during the third quarter of pregnancy reduces the baby's birth weight in 20

Novel nanotherapy breakthrough may help reduce recurrent heart attacks, stroke

Posted: 20 Jan 2014 06:55 AM PST

A new report shows that new statin nanotherapy can target high-risk inflammation inside heart arteries that causes heart attacks or

Milky Way may have formed 'inside-out:' Gaia provides new insight into galactic evolution

Posted: 20 Jan 2014 06:06 AM PST

Research on first data release from Gaia-ESO project suggests the Milky Way formed by expanding out from the center, and reveals new insights into the way our Galaxy was

Ingredients in chocolate, tea, berries could guard against diabetes

Posted: 20 Jan 2014 06:06 AM PST

Eating high levels of flavonoids including anthocyanins and other compounds (found in berries, tea, and chocolate) could offer protection from type 2 diabetes -- according to research. The study of

Exposure to pesticides results in smaller worker bees

Posted: 20 Jan 2014 06:06 AM PST

Exposure to a widely used pesticide causes worker bumblebees to grow less and then hatch out at a smaller size, according to a new

Keeping whales safe in sound

Posted: 20 Jan 2014 06:06 AM PST

Global efforts are intensifying to safeguard whales and other marine species from the harms of powerful noise used in seismic seafloor surveys by the oil and gas industry and others. The impetus is

Secondhand smoke exposure increases odds of hospital asthma readmission for children

Posted: 20 Jan 2014 06:06 AM PST

A new study shows that exposure to secondhand smoke at home or in the car dramatically increases the odds of children being readmitted to the hospital within a year of being admitted for

Frog fathers don't mind dropping off their tadpoles in cannibal-infested pools

Posted: 20 Jan 2014 06:04 AM PST

Given a choice, male dyeing poison frogs snub empty pools in favor of ones in which their tiny tadpoles have to grow in the company of larger, carnivorous ones of the same species. The frog fathers

Ultra-thin tool heating for injection molding

Posted: 20 Jan 2014 06:04 AM PST

In future, thin-film heating will allow plastic parts to be produced with greatly improved surface quality. Researchers have also found a way to make the whole process more energy

Hydrocephalus: Sensors monitor cerebral pressure

Posted: 20 Jan 2014 06:04 AM PST

If the pressure in a patient's brain is too high, physicians implant a system in the head that regulates the pressure. A sensor can now measure and individually adjust brain pressure. The sensor

Childhood obesity can only be tackled with broad public health interventions

Posted: 20 Jan 2014 06:04 AM PST

Public health researchers have found single dietary interventions are not effective at increasing fruit and vegetable consumption among overweight children and will not halt the global epidemic in

Quality control of mitochondria as defense against disease

Posted: 20 Jan 2014 06:04 AM PST

Scientists have discovered that two genes linked to hereditary Parkinson's disease are involved in the early-stage quality control of mitochondria. The protective mechanism removes damaged proteins

Forget about forgetting: Elderly know more, use it better

Posted: 20 Jan 2014 06:04 AM PST

What happens to our cognitive abilities as we age? If your think our brains go into a steady decline, research reported this week may make you think again. The work takes a critical look at the

Melatonin may lower prostate cancer risk

Posted: 20 Jan 2014 05:50 AM PST

Higher levels of melatonin, a hormone involved in the sleep-wake cycle, may suggest decreased risk for developing advanced prostate cancer, according to results of new

Possible explanation for link between exercise, improved prostate cancer outcomes

Posted: 20 Jan 2014 05:50 AM PST

Men who walked at a fast pace prior to a prostate cancer diagnosis had more regularly shaped blood vessels in their prostate tumors compared with men who walked slowly, providing a potential

Peeking into Schrödinger's Box

Posted: 20 Jan 2014 05:50 AM PST

Until recently, measuring a 27-dimensional quantum state would have been a time-consuming, multistage process using a technique called quantum tomography, which is similar to creating a 3D image from

Researchers discover how heart arrhythmia occurs

Posted: 19 Jan 2014 11:24 AM PST

Researchers have discovered the fundamental biology of calcium waves in relation to heart arrhythmias. The finding outlines the discovery of this fundamental physiological process that researchers

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