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On the wings of cicadas found antibacterial nanoshtyri In the disappearance of Neanderthals was accused of rabbits Scientists have presented the wireless brain interface Physics of bound water in a knot Graphene turned into a springy «solid smoke» The Russians lost interest in science Circular RNA molecules were-sponges
 

In the brain of a new type of neurons
4-04-2013, 11:59 | 848

In the brain of a new type of neurons
(Fig. Roger Harris) Scientists, Karolinska Institute (Karolinska Institutet, Sweden, in collaboration with colleagues from Germany and the Netherlands, have discovered a previously unknown group of nerve cells in the brain. These cells regulate cardiovascular function - rhythm and arterial pressure. According to scientists, in the long run this discovery, published in the journal the Journal of Clinical Investigation , to have a significant impact on the treatment of cardio-vascular diseases.

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Acoustic lens of carbon nanotubes is focused ultrasonic waves, the turning of the invisible scalpel
4-04-2013, 11:59 | 739

Acoustic lens of carbon nanotubes is focused ultrasonic waves, the turning of the invisible scalpel
Today ultrasonic devices are used in the most diverse fields, but the most widely used, they found in the field of medicine. In addition to observing the development of babies in the womb of the mother, ultrasound is used for crushing of stones in kidneys and bladder, for the treatment of inflammation of the muscle tissue and many other things. Now, thanks to the invention of new acoustic lenses on the basis of carbon nanotubes, ultrasonic waves can serve as a fine scalpel, which allows to make manipulation directly inside a living organism without surgical intervention. Focused ultrasonic waves used in most health facilities, have a relatively large focus. The sound beam used for crushing of stones in the body, has a diameter of about one centimeter, but if you want to «hit» a very small targets, such as the deposition of cholesterol in the wall of a blood vessel, or a group of cancer cells, then the ultrasound previously was powerless.

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Solar cells can turn black
4-04-2013, 11:59 | 666

Solar cells can turn black
Although a record in the efficiency of solar cells can convert up to three-quarters of the energy of the visible spectrum in electricity, IR-radiation for them too little. The wave does not excite electrons in the atoms of silicon and so, about a quarter of the energy of the lights, coming to this part of the spectrum, disappears. Researchers from the Institute of telecommunications of the Company Fraunhofer (Germany) tried to find a method, allowing the use of silicon solar cells for extracting energy from the IR radiation. The surface of the cells dopirovalas' gray .

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The accuracy of the GLONASS system by 2020 will be brought up to 0.6 m
4-04-2013, 11:59 | 616

The accuracy of the GLONASS system by 2020 will be brought up to 0.6 m
Roscosmos expects to 2020 go on accuracy of definition of coordinates of system GLONASS in less than 10 centimeters, the head of Department Vladimir Popovkin at the meeting of the government of the Russian Federation, where was considered the space program up to the year 2020. «Today, the accuracy of the measurement of 2.8 meters, by 2015, we are coming to 1.4 meters by 2020 by 0.6 metres», - he said.

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