Researchers
have developed the first flexible wearable device capable of monitoring both
biochemical and electric signals in the human body in real time. The Chem-Phys patch
records electrocardiogram (EKG) heart signals and tracks levels of lactate, a
biochemical that is a marker of physical effort, in real time, researchers
said. The device can be worn on the chest and communicates wirelessly with a
smartphone, smart watch or laptop. It has a wide range of applications, from
athletes monitoring their workouts to physicians monitoring patients with heart
disease. Researchers including Amay J Bandodkar, A M Vinu Mohan and Rajan Kumar
from University of California San Diego (UC San Diego) in the US built the device,
which includes a flexible suite of sensors and a small electronic board.
Thursday, 11 August 2016
Faintest early-universe galaxy found
Scientists
have detected the faintest early-universe galaxy yet, located about 13 billion
light years away from earth. This new object could help astronomers understand
the “reionisation epoch” when the first stars became visible. Gravitational
lensing and a special instrument on the 10-metre telescope at the W M Keck
Observatory in Hawaii, enabled the team to see the incredibly faint object. It would
not have been visible if the light from the galaxy was not magnified by the
gravitational lens, said Kuang-Han Huang, a researcher at University of
California, Davis.
Japan successfully tested its first stealth fighter X-2 jet
On 22 April2016, Japan successfully tested
the first stealth fighter jet. With this, the country joins a select group of
world military powers wielding the radar-dodging technology. The domestically
developed single-pilot prototype X-2 jet took off from Nagoya airport in
central Japan on its maiden test flight. It safely landed at Gifu air base,
north of Nagoya airport, after a 25- minute flight with no particular problems.
Japan still has one of the world’s most advanced defence forces and the
development of the stealth fighter comes as it faces new fighter comes as it
faces new security challenges in the form of China’s expanding force posture. At
present, only the USA, Russia and China have been internationally recognized as
having successfully developed and flown manned stealth jets.
Nasa set to put in the sky an array of new X-planes
NASA scientists
are preparing to put in the sky an array of new X-planes or experimental aircraft
– including a quiet supersonic jet – to demonstrate advanced technologies that
will push back the frontiers of aviation. Goals include showcasing how
airliners can burn half the fuel an degenerate 75% less pollution during each flight
as compared to now, while also being much quieter than today’s jets – perhaps even
when flying supersonic.
NASA’s
renewed emphasis on X-planes is called “New Aviation Horizons”. The plan is to
design, build and fly the series of X-planes during the next 10 years as a
means to accelerate the adoption of advanced green aviation technologies by
industry. “If we can build some of these X-planes and demonstrate some of these
technologies, we expect that will make it much easier and faster for US
industry to pick them up and roll them out,” said Ed Waggoner, NASA’s
integrated aviation systems programme director.
Design
work already has begun on QueSSt, short for Quiet Supersonic Technology. A preliminary
design contract was awarded in February to a team led by Lockheed Martin. If
schedule and funding holds, this new supersonic X-plane could fly in the 2020
timeframe, NASA said
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