Most elite athletes consider doping substances "are effective" in improving performance, while recognising that they constitute cheating, can endanger health and entail the obvious risk of sanction. At the same time, the reasons why athletes start to take doping substances are to achieve athletic success, improve performance, for financial gain, to improve recovery and to prevent nutritional deficiencies, as well as "because other athletes also use them".
Heavens
Pulsars have a number of unusual qualities. Like zombies, they shine even though they're technically dead, and they rotate rapidly, emitting powerful and regular beams of radiation that are seen as flashes of light, blinking on and off at intervals from seconds to milliseconds. A NASA team has built a first-of-a-kind testbed that simulates these distinctive pulsations.
SAN DIEGO (May 20, 2013) - A novel vaccine study from South Dakota State University (SDSU) will headline the groundbreaking research that will be unveiled at the American Association of Pharmaceutical Scientists' (AAPS) National Biotechnology Conference (NBC). The meeting takes place Monday, May 20 - Wednesday, May 22 at the Sheraton San Diego Hotel and Marina.
The massive ball of iron sitting at the center of Earth is not quite as "rock-solid" as has been thought, say two Stanford mineral physicists. By conducting experiments that simulate the immense pressures deep in the planet's interior, the researchers determined that iron in Earth's inner core is only about 40 percent as strong as previous studies estimated.
A suite of disquieting global phenomena have given rise to the "Anthropocene," a term coined for a new geologic epoch characterized by humanity's growing dominance of the Earth's environment and a planetary transformation as profound as the last epoch-defining event -- the retreat of the glaciers 11,500 years ago.
And in Bonn, Germany May 21-24, world experts will experts will focus on how to mitigate key factors contributing to extreme damage to the global water system being caused while adapting to the new reality.
On 5:24 a.m. EDT on May 17, 2013, the sun erupted with an Earth-directed coronal mass ejection or CME, a solar phenomenon that can send billions of tons of solar particles into space that can reach Earth one to three days later and affect electronic systems in satellites and on the ground. Experimental NASA research models, based on observations from NASA's Solar Terrestrial Relations Observatory, show that the CME left the sun at speeds of around 745 miles per second. The solar material in CMEs cannot pass through the atmosphere to affect humans on Earth.
The first tropical storm of the Eastern Pacific hurricane season was short-lived. Satellite imagery revealed that Tropical Storm Alvin became a remnant low pressure area 36 hours after it was named.
NASA's GOES Project created an image of Alvin's remnants using infrared data from NOAA's GOES-15 satellite on May 17 at 1200 UTC (8 a.m. EDT). NASA's GOES Project is located at NASA's Goddard Space Flight Center in Greenbelt, Md. Alvin became a named tropical storm on May 15 at 5 p.m. EDT and weakened into a trough (elongated area) of low pressure by 5 a.m. EDT on May 17.
NASA's Tropical Rainfall Measuring Mission satellite known as TRMM measured Cyclone Mahasen's rainfall rates from space as it made landfall on May 16. Mahasen has since dissipated over eastern India.
Tropical Cyclone Mahasen hit southern Bangladesh on May 16, causing the reported deaths of at least 13 people and the destruction of many homes. Mahasen brought heavy rains and tropical storm force winds when it came ashore, but the winds quickly weakened.
An experimental, inexpensive iPhone application transmitted diagnostic heart images faster and more reliably than emailing photo images, according to a research study presented at the American Heart Association's Quality of Care and Outcomes Research Scientific Sessions 2013.
The app could help save lives by speeding treatment for the deadliest type of heart attack known as STEMI (ST segment elevation myocardial infarction), in which a clot blocks blood flow to the heart.
Archaeologists have made a discovery in southern subtropical China which could revolutionise thinking about how ancient humans lived in the region.
They have uncovered evidence for the first time that people living in Xincun 5,000 years ago may have practised agriculture –before the arrival of domesticated rice in the region.
NASA's TRMM satellite identified areas of heavy rainfall as Cyclone Mahasen made landfall today, May 16, in southern Bangladesh. NASA's Aqua satellite also captured an image of the storm and showed the extent of Cyclone Mahasen's clouds over three countries.
NASA's Aqua satellite and NOAA's GOES-15 satellite captured imagery of the Eastern Pacific Ocean's first named tropical storm, Alvin. Aqua and GOES-15 provided imagery of Alvin that provided a look at the overall storm and the temperatures of its cloud tops.
A new study of glaciers worldwide using observations from two NASA satellites has helped resolve differences in estimates of how fast glaciers are disappearing and contributing to sea level rise.
While 99 percent of Earth's land ice is locked up in the Greenland and Antarctic ice sheets, the remaining ice in the world's glaciers contributed just as much to sea rise as the two ice sheets combined from 2003 to 2009, says a new study led by Clark University and involving the University Colorado Boulder.
CAMBRIDGE, MA -- Injectable nanoparticles developed at MIT may someday eliminate the need for patients with Type 1 diabetes to constantly monitor their blood-sugar levels and inject themselves with insulin.