Δευτέρα 14 Απριλίου 2014

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News


Dual role of carbon dioxide in photosynthesis: Pioneering findings

Posted: 13 Apr 2014 12:40 PM PDT

Carbon dioxide, in its ionic form bicarbonate, has a regulating function in the splitting of water in photosynthesis, researchers have found. This means that carbon dioxide has an additional role to being reduced to sugar. The pioneering work opens up a new research field where researchers can investigate possible biological and ecological consequences of the dual role of carbon dioxide.

Sharpening microscope images: New technique takes cues from astronomy, ophthalmology

Posted: 13 Apr 2014 10:23 AM PDT

The complexity of biology can befuddle even the most sophisticated light microscopes. Biological samples bend light in unpredictable ways, returning difficult-to-interpret information to the microscope and distorting the resulting image. New imaging technology rapidly corrects for these distortions and sharpens high-resolution images over large volumes of tissue.

Greenhouse gas emissions from today will be felt for at least 1000 years

Posted: 13 Apr 2014 06:41 AM PDT

Greenhouse gas emissions from today will greatly affect our descendants for at least 1000 years. In 1000 years, between 15 and 40 per cent of the CO2 we emit today will still be left in the atmosphere," says one professor. "We are talking about effects 30 generations ahead. This is something people need to take to heart now."

'Nano-anesthesia: New approach to local anesthesia?

Posted: 11 Apr 2014 12:34 PM PDT

A technique using anesthesia-containing nanoparticles —- drawn to the targeted area of the body by magnets —- could one day provide a useful alternative to nerve block for local anesthesia in patients, suggests an experimental study.

New PET/CT scanner more patient friendly

Posted: 10 Apr 2014 04:43 PM PDT

A new patient-friendly PET/CT scanner does combined exams in just 15 or 20 minutes, and the patient is never completely enclosed. The state-of-the-art system is improving the diagnosis and treatment of cancer, heart disease, epilepsy, Alzheimer's disease and other conditions. "It is the most patient-friendly system of its kind," said a hospital's medical director of Nuclear Medicine.

Increased time on Facebook could lead women to negative body images

Posted: 10 Apr 2014 05:35 AM PDT

The mediated version of what women should look like has always been under scrutiny, particularly looking at actresses and fashion models. But what about body image from social networks and friends? A recent study found that more time on Facebook could lead to more negative feelings and more comparisons to the bodies of friends.

Hiking Inca road informs engineer's research, teaching

Posted: 09 Apr 2014 10:43 AM PDT

Can modern engineers learn best practices from ancient road builders? Modern road construction often relies on modifying the landscape by blasting through rock, which can result in landslides. Because the Inca relied on working within their environment, following the contours of the land and controlling the water flow around it, their road still stands today. The research has important implications for understanding the construction methods employed by the Inca.

No compromises: Short, flexible, reusable AFM probe

Posted: 09 Apr 2014 08:13 AM PDT

A short, flexible, reusable probe for the atomic force microscope that enables state-of-the-art precision and stability in picoscale force measurements has been engineered by scientists. Shorter, softer and more agile than standard and recently enhanced AFM probes, the tips will benefit nanotechnology and studies of folding and stretching in biomolecules such as proteins and DNA.

Study pegs fuel economy costs of common practices

Posted: 09 Apr 2014 07:33 AM PDT

People who pack their cars and drive like Clark Griswold in National Lampoon's 'Vacation' pay a steep penalty when it comes to fuel economy. For the study, researchers tested a sport utility vehicle and a compact sedan with various configurations, including underinflated tires, open windows, and rooftop and hitch-mounted cargo. The researchers tested the vehicles at a variety of speeds with the different configurations. While the findings were not unexpected, they serve as a reminder of how drivers can save money by taking simple measures.

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