Professor Mikel Izal from the Public University of Navarre, Basque Country, has analysed the problems to integrate new optic networks in actual network and transfer level (TCP/IP) Internet protocols. This integration will enable to create the core of the second Internet generation in future, the so called Internet 2.
In that area, technological innovations are created everyday and the thesis has been focused on the burst switching networks corresponding to the second optic Internet generatio
Researchers at UT Southwestern Medical Center at Dallas and their colleagues have uncovered new information that will help brain researchers better understand a person’s tolerance to drugs of abuse and open new avenues of investigation into the relationship of addictive-drug usage and the biological causes of mood disorders.
Dr. Michel Barrot, assistant professor of psychiatry at UT Southwestern and lead author of the paper, said researchers used genetically altered mice to show that p
Penn State engineers have optimized an energy harvesting circuit so that it transfers four times more electrical power out of vibration – the ordinary shakes and rattles generated by human motion or machine operation.
Using their laboratory prototype, which was developed from off-the-shelf parts, the Penn State researchers can generate 50 milliwatts. Although they haven’t tried it, they believe the motion of a runner could be harnessed to generate enough power to run a portable electron
Reducing bad cholesterol to below “optimal” levels reversed the accumulation of artery-clogging plaque, according to a study in today’s rapid access issue of Circulation: Journal of the American Heart Association. When atherosclerotic plaque builds up in the arteries it can cause a heart attack or stroke.
People with known heart disease or a major risk factor, such as diabetes, are counseled to reduce their low-density lipoprotein (LDL) cholesterol (“bad” cholesterol) below 100 milligr
Two researchers at Rensselaer Polytechnic Institute are creating a faster, more efficient data-mining technique to determine basic rules of how proteins form. The researchers are Mohammed Zaki, assistant professor of computer science, and Chris Bystroff, assistant professor of biology.
Researchers can identify a protein’s biological function, and therefore its specific role in disease, if they know the 3-D structure of a protein given its amino-acid sequence.
Twenty simple amin
MIT team is part of project
A 150-ton magnet developed in part by MIT engineers is pulling the world closer to nuclear fusion as a potential source of energy.
Over the last three years “we’ve shown that we can design a magnet of this size and complexity and make it work,” said Joseph V. Minervini, a senior research engineer at MIT’s Plasma Science and Fusion Center (PSFC) and Department of Nuclear Engineering. Minervini leads the MIT team involved in the project.
Osteoporosis, which means porous bones, is a disease that thins and weakens bones, making them fragile and more likely to break. The vast majority of individuals affected by osteoporosis are women. Although the disease can strike at any age, the greatest risk for fractures from osteoporosis occurs after menopause. This is because women’s bodies produce less oestrogen after menopause, and oestrogen plays an important role in helping to prevent bone loss. As the EU population continues to age, the occ
Cornell University researchers have demonstrated a novel method of separating DNA molecules by length. The technique might eventually be used to create chips or other microscopic devices to automate and speed up gene sequencing and DNA fingerprinting.
The method, which uses a previously discovered entropic recoil force, has better resolution — that is, better ability to distinguish different lengths — than others tried so far, the researchers say. They separated DNA strands of two differ
In the first look at the molecular diversity of the starch pathway in maize, research at North Carolina State University has found that – in contrast to the high amount of diversity in many of the maize genes previously studied – there is a general dearth of diversity in this particular pathway.
That’s important, says Dr. Ed Buckler, U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) researcher, assistant professor of genetics at NC State and one of the study’s
Although stressful life events may affect the health of both men and women, men are more vulnerable, according to a recent study of nearly 3,000 people in Finland.
The study, published in the September/October issue of Psychosomatic Medicine, looked at whether psychological problems (such as anxiety and mental distress) and health-risk behaviors (such as smoking and alcohol use) underpin the health effects of life events.
Four major life events were studied: the death or serious illnes
Internet-based therapy can help sufferers cope with tinnitus, the medical term for the ringing sound in the ears that is experienced by 10 to 14 percent of adults, suggest the results of a Swedish study.
No cure for tinnitus exists, although some experts recommend the use of hearing aids and white-noise generators to help minimize the ringing, and sometimes hissing, chirping or clicking sounds associated with tinnitus. Symptoms are mild for most tinnitus patients, but the one-third of patien
Study Suggests Promising New Avenues for Nanotube Research
Superconducting nanotubes may lie on the technology horizon, suggests a theoretical study recently published by researchers from the Commerce Department’s National Institute of Standards and Technology (NIST), the University of Pennsylvania, and Bilkent University in Turkey.
The intriguing possibility is the team’s most recent finding in a spate of studies showing how changing the shape of tiny single-walled
An entirely new method for purifying blood has been developed at the Lund Institute of Technology, LTH, in Sweden. The blood is led out in hair-thin channels and is processed with ultrasound. A company in the neighboring research village IDEON is now perfecting the first medical application: a treatment to separate out clotted fat so-called fat embolin blood. But the method is a general one and can be applied to other medical treatments.
Heart surgery can be troubled by certain intellectual
Based on satellite data from the European Space Agency, the national meteorological centre of the Netherlands predicts the Antarctic ozone hole will break apart this week, months earlier than usual.
A scientist at the Royal Netherlands Meteorological Institute (KNMI) adds that the depth of the ozone hole is much smaller than previously seen.
“This breakdown is occurring exceptionally early in the year, about two months earlier than normal”, says Henk Eskes, a KNMI senior scientist.
To make super-durable and strong details it is necessary to use so-called diamond composites, i.e. materials (matrixes) with incorporated tiny diamonds. The matrix is to be durable, strong, wear-proof as well as monolithic by structure ensuring chemical interaction with diamonds. To avoid internal tension this matrix must have physical characteristics close to diamond ones. In other case the detail will collapse under load.
Carbide materials fit all these requirements because they are strong
Sudden collapses in many ecological systems are the rule rather than exceptions to the rule. This is shown by Professor Lennart Persson of Umeå University, Sweden, in the latest issue of the scientific journal Proceedings of the National Academy of Sciences. Among other things, the article provides an explanation for the collapses in cod stocks in different parts of the world. Several models have shown that ecological systems can experience catastrophic collapses. On the other hand, th
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