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Dramatic predictions of which are caused by global warming could stop the deep ocean currents with dramatic effects on climate, it will probably not fill. Contends that scientists from the American Geophysical Union (AGU), who at seven years of continuous research, the Gulf Stream did not detect any signs of slowing down.
Gulf Stream and follow the currents have a major impact on the circulation of heat around the planet. According to previous studies, the melting of ice associated with the inflow of cold water into the North Atlantic could stop these currents, which would in turn caused a dramatic cooling and the onset of a new Ice Age. In 2004, this theory became a model of catastrophic slide next day.
Scientists studied ocean currents from 2002 to 2009 for assistance in-depth and surface probes, whose movement was monitored by satellite. The study confirmed that in the short term, subject to the flow of dramatic changes in the oceans, is not it but to detect any long-term trend.
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As the first mortal to have successfully raised the plane of the water. French engineer Henri Fabre built a floatplane – seaplane, so that started the era of naval aircraft and flying boats, who wrote the early chapters of aviation history. From the moment Fabre his machine was first successfully tested today passed straight century.
Fabre was born in 1882 in a shipping family in Marseille. Education he received at the Jesuit college, where he was interested in studying hydrodynamics. Then extensively examined and propeller aircraft structures. In 1909 he started building the first prototype seaplane. Much time devoted to the construction of floats. Because he had a prototype engine but only a weak engine power 25 hp, the machine does not operate.
Fabre later built a new machine is powered by a rotary engine sedmivalcovym Gnome Omega with the performance of 50 horses, three floats, a pusher propeller. Machine called Hydravion.
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Environmentally friendly and energy-saving method of producing hydrogen for fuel cell vehicles could be inspired by nature. Specifically, the leaves of plants. Driver needed chemical reactions, just like during photosynthesis may be solar radiation.
Plants are able to produce by photosynthesis from water and carbon dioxide simple sugars, which can be obtained by other biochemical reactions of a wide range of organic compounds. Waste product of this process is oxygen. The efficiency of utilization of solar radiation can not compete yet leaves no human technology. Why are they then something nepriucit?
For the production of hydrogen can be used titanium dioxide, which acts as photocatalysts – accelerates a chemical reaction activated by light. Involved, inter alia, the decomposition of water molecules from which hydrogen can be obtained. Scientists from universities in Shanghai Jiaotong at the annual meeting of the American Chemical Association presented the way the efficiency of the process greatly increased.
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The relationship between the number of obscured quasars and obscured in the early universe was significantly higher compared to now
Blacks supermassive holes found at the center of distant galaxies show a huge increase in size as a result of galactic collisions, according to new research by astronomers Yale University and the University of Hawaii The results are reported on Science Express, version Online Magazine Science.
When gas-rich galaxies collide distant universe, the black hole at its center is channeled toward the center of the cosmic merger.
“As a result of this violent collision, the black hole remains obscured behind a veil of dust over a period of between 10 and 100 million years,” said Priyamvada Natarajan, professor of astronomy at Yale University and coauthor of the study. After that period, the dust ends up esssere swept away to reveal a very bright quasars –
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Exploiting the phenomenon of stochastic resonance that occurs naturally to the nanoscale, a group of researchers has turned the noise from a nuisance factor “enhancer” signal
Transform the noise disturbing signal in a part of that signal is what the researchers were able to make the Subtle European project, A consortium of international research in the front line group of physicists led by Luca Gammaitoni Worschech Lukas University of Perugia and the University of Wurzburg, who are publishing a series of articles on the results achieved gradually, mainly on Applied Physics Letters.
Each signal carries a certain sound, a margin of uncertainty that conveys information and confusing the receipt of the underlying data. To curb the problem, engineers have always worked to try techniques that will yield a signal to noise ratio as the highest possible.
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By engineering bacteria and yeasts can cause them to efficiently convert sugars of plant origin, particularly the scraps of wheat and rice
Yeasts capable of converting sugar into alcohol more efficiently could allow biofuels to represent a viable alternative to fossil fuels, according to a report presented at a session of Meeting of the Society for General Microbiology being held in Edinburgh, Ireland.
Christian Weber, Eckhard Boles, University of Frankfurt, Germany, have worked to change the yeast cells to induce them to efficiently convert a wide range of saccharides of plant origin, in particular waste processing of wheat and rice.
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Special glasses containing an infrared light and a webcam that records the movement of the eye allows you to sync via the computer screen with those racquets
A computer game that is controlled by the eye movements was developed by a group of students’ Imperial College London. The result paves the way for promising applications for the benefit of pruners with disabilities.
During the study, students have adapted a computer game Open Source called “Pong” in which the player moves a stylized tennis racket to bounce a ball along the side of the screen or is confronted with another player.
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A study at EPFL (Ecole Polytechnic Federal Lausanne) allows discover role important that system plays Lymphatic developing cancer.
How cancer thwarts Does alertness immune system? Mechanism key in this domain recently been unearthed at Ecole polytechnique Federal Lausanne. A study by Melody Swartz Professor and Lab director Mechanobiology and morphogenesis (LMBM) showed how tumor reaches avoid System Attacks immune adopter characteristics a ganglion and create thus environment favorable its development. This discovery, published in “Science“And”Science Express” March 25, puts in light role important system plays Lymphatic disease. Moreover she opens track to possible new treatments cons cancer.
“The tumor deceives body into thinking she is a fabric healthy”, describes Melody Swartz. To understand how disease winning goodwill tolerate by system she and his team concentrated on protein naturally in nodes lymphatic for attracting lymphocytes T and program them staff functions immune vital. Researchers discovered that certain tumors were capable secrete this protein, giving their layer external appearance a ganglion.
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On Wednesday, March 24, the European Commission has launched a test in a real car communicating around the airport Amsterdam. These vehicles have the ability to communicate in order to coordinate, improve road safety but also reduce consumption fuel. The communication occurs between vehicles, as well as various road lights, signs, or facilities management.
The major advantage of this technology is the ability to prevent accidents traffic. Imagine a crash in a bend on a highway. Without this technology, drivers arrive following a speed of 130 km / h and high risk of offending the car rugged. With this technology, in second following the accident, the crashed car may be able to inform the road situation, which in turn will distribute information on the light panels. The approaching car is well aware of the situation, and its speed will be reduced automatically if the driver does not respond to this alert. During this time Latter vehicle disseminates information to the next car, and so on.
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Understand physical mechanisms allow move a gout in propagating an wave acoustic along substrate whereon she rests: is bet succeeded researchers Institute electronics microelectronics and nanotechnologies. They reached detailing structure ultrasound which propagate in gout and entail his oscillation then his travel. These results published in magazine Physical Review E Could be utilized for optimize analyzes biochemical realized on microarray DNA who use drops biofluids.
Researchers lillois studied dynamics a small gout posed on a substrate along which propagates a wave acoustic (1)Comparable to raw waves detected by seismographs during tremors seismic. What effect this Mini tremor earth on gout? Researchers observe (see movie below, realized to camera rapid 5000 fps) that gout moves in sense propagation wave a speed up few centimeters by second. Moreover, shape of gout is amended: gout starts oscillate and she is periodically stretched upwards and flattened.
Why dynamic? Waves acoustic propagated exhibit particularity move only surface substrate without y penetrate.
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