(General Awareness For Bank's Exams) Science-and-tech Junly - 2014
(General Awareness For Bank's Exams)
Science & tech
July - 2014
Govt. mulls use of radiation tech to preserve vegetables
- The government proposes to adopt radiation technology developed by the
Bhabha Atomic Research Centre (BARC) for improving the shelf-life of fruits
and vegetables especially onions, potatoes and tomatoes to address the issue
of supply side shortage that often results in price rise.
- Radioactive technology had been available in the country for some
time and already in use in Maharashtra, though on a small scale, Safety
concerns should be taken care of as existing norms do not permit radiation
above a permissible limit.
- Food irradiation is a physical process in which food and farm
commodities, in pre-packed form or in bulk, are exposed to controlled
radiation energy to prevent sprouting, delay ripening, kill insects, pests,
pathogenic and spoilage micro-organisms.
MH17 black boxes handed over to British experts
- The British government has confirmed that the two black boxes from
Malaysian airlines Flight MH 17 that crashed in eastern Ukraine killing 298
on board have been handed over to British investigators.
- Boxes will contain recordings of all cockpit conversations prior
to the crash, The AAIB can now analyse hours of conversation and the
contents of the flight data recorder for clues on why and how the plane went
down.
- The boxes were handed over by a joint technical protocol signed by
representatives of the Netherlands, Malaysia, Ukraine and the United
Nations’ International Civil Aviation Organisation.
- The AAIB is responsible for the investigation of civil aircraft
accidents and serious incidents within the U.K.
GEAC clears field trials for GM crops
- The Genetic Engineering Approval Committee (GEAC) has given the
green signal for field trials of genetically modified (GM) rice, mustard,
cotton, chickpea and brinjal.
- While the GEAC has approved the commercial release of Bt brinjal
it has been stayed by the Ministry of Environment and Mr. Pande said the
government would have to take a decision on this.
- The only genetically modified crop approved for release in India
is cotton.
- Three companies - Bayer Bio Sciences, Monsanto and BASF have been
allowed to import the Soyabean oil, which is genetically modified. The last
time Central Food Technological Research Institute (CFTRI), gave a clean
chit to imported samples.
Seven new dwarf galaxies discovered
- Astronomers have used a new type of telescope made by stitching
together telephoto lenses to discover seven new dwarf galaxies.
- Their Dragonfly Telephoto Array uses eight telephoto lenses with
special coatings that suppress internally scattered light, This makes the
telescope uniquely adept at detecting the very diffuse, low surface
brightness
- The previously unseen galaxies may yield important insights into
dark matter and galaxy evolution
- These are the same kind of lenses that are used in sporting events
like the World Cup.
Mars orbiter spacecraft to reach target in 75 days
- Exactly 75 days from Saturday, India’s Mars spacecraft is
scheduled for a rendezvous with the red planet, Mars Orbiter Spacecraft has
travelled 525 million km on its heliocentric arc.
- In the last crucial milestone on June 11, ISRO performed the
second Trajectory Correction Manoeuvre (TCM—2) on the orbiter as a
mid-course correction to keep the spacecraft on course.
- The ambitious Mars mission under a Rs 450 crore project was
launched from Sriharikota in Andhra Pradesh onboard the Pollar Satellite
Launch Vehicle on November 5 2013.
INS Kamorta handed over to Navy and Navy gets its largest destroyer
- INS Kamorta, the first in series of anti-submarine corvettes
indigenously built by Kolkata based Garden Reach Shipbuilders & Engineers
Ltd. (GRSE), was handed over to Indian Navy.
- It is first Indian Naval warship ever built in the country with
almost 90 per cent of indigenous content.
- The Indian Navy has got its largest-ever destroyer after the
addition of the 163 metre-long vessel Kolkata (D63).
- Kolkata (D63) is India’s first domestically built guided missile
destroyer to feature a Western-style air search radar and stealth
technology.
- Kolkata has an all-round capability against enemy submarines,
surface warships, anti-ship missiles and fighter aircraft.
- It incorporates modern weapons and sensors having advanced
information warfare suite, an auxiliary control system with sophisticated
power distribution architecture and modular crew quarters.