The publication of this information does not constitute the practice of medicine, and this information does not replace the advice of your physician or other health care provider. Before undertaking any course of treatment, the reader must seek the advice of their physician or other health care provider. Antioxidants include some vitamins and minerals, but to appreciate the value of antioxidants, you first need to understand the potential dangers of free radicals, a form of oxygen that has been chemically modified into a highly unstable substance. Free radicals are unstable because they are missing electrons, which must be replaced. So they seek out other compounds in the body. Steal electrons to restore stability. If the compound giving up its electrons is the fat and protein in an LDL-cholesterol molecule, the result is the formation of fatty lesions in the walls of the blood vessels -- the hallmark of atherosclerosis. For instance, they form in the normal course of the day, just by our breathing in oxygen.|Speech recognition is very challenging in student learning environments that are characterized by significant cross-talk and background noise. To address this problem, we present a bilingual speech recognition system that uses an interactive video analysis system to estimate the 3D speaker geometry for realistic audio simulations. We demonstrate the use of our system in generating a complex audio dataset that contains significant cross-talk. Background noise that approximate real-life classroom recordings. We then test our proposed system with real-life recordings. In terms of the distance of the speakers from the microphone, our interactive video analysis system obtained a better average error rate of 10.83% compared to 33.12% for a baseline approach. Our proposed system gave an accuracy of 27.92% that is 1.5% better than Google Speech-to-text on the same dataset. In terms of 9 important keywords, our approach gave an average sensitivity of 38% compared to 24% for Google Speech-to-text, while both methods maintained high average specificity of 90% and 92%. On average, sensitivity improved from 24% to 38% for our proposed approach. Like a quarterback throwing a pass, the launch system aimed not for where Mars was, but for where it would be when the craft arrived. NASA threw that pass, and the rover-football reached its round and red receiver more than 250 days later, and touched down on Sunday, Aug. 6, 2012 (Eastern Daylight Time). NASA did not "throw" MSL from Earth's surface, however; the agency launched it from planetary orbit. Here's how: Once the lifting vehicle reached space from Cape Canaveral, its nose cone, or fairing, opened like a clamshell and fell away, along with the rocket's first stage, which cut off and plummeted to the Atlantic Ocean. The second stage, a Centaur engine, then kicked in, placing the craft into a parking orbit. Once everything was properly lined up, the rocket kicked off a second burn, propelling the craft toward Mars. About 44 minutes after launch, MSL separated from its rocket and began communicating with Earth. As it continued on its way, it made occasional planned course corrections. Once it hit the Martian atmosphere, the fun really began. Curiosity began its journey exploring Gale, an impact crater nestled between Mars's southern highlands and northern lowlands. Measuring 96 miles (154 kilometers) across, Gale sprawls over an area equivalent to Connecticut and Rhode Island combined. Instead, the Mars Science Laboratory used the sky crane touchdown system illustrated here, which is capable of delivering a much larger rover onto the surface of Mars. Within Mars, rising higher than Mount Rainier towers above Seattle, stands a sediment mountain 3 miles (5 kilometers) high.|UNITED NATIONS - U.N. Secretary-General Antonio Guterres says Russia’s attack on Ukraine - as he appealed for President Vladimir Putin to stop his troops - was “the saddest moment” of his five-year tenure. But during the meeting, Putin announced that he was launching a “special military operation” in eastern Ukraine. A war would cause deaths and displacement and people will lose hope in the future, Guterres said, adding Russia’s actions would harm the global economy. “What is clear for me is that this war doesn’t make any sense,” Guterres said, stressing that it violates the U.N. Charter and will cause a level of suffering if it doesn’t stop that Europe hasn’t know since at least the 1990s Balkans crisis. BEIJING - Asian stock markets have plunged and oil prices surged after President Vladimir Putin announced Russian military action in Ukraine. Market benchmarks in Tokyo and Seoul fell 2% and Hong Kong and Sydney lost more than 3% Thursday. bbcmundo
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