Ø Former
Union Minister for Youth Affairs and Sports Sarbananda Sonowal was sworn in as
the fourteenth Chief Minister of Assam on Tuesday in the presence of Prime
Minister Narendra Modi and several Cabinet ministers.
Ø Potassium
bromate, the chemical additive widely prevalent in bread and refined flour and
associated with cancer, is in the same league as coffee, aloe vera, mobile
phone radiation and carbon black, a key ingredient in eye-liner. It also is
less toxic than processed and red meat, according to a perusal by The Hindu of
the list of agents deemed potentially cancerous by the International Agency For
Research on Cancer (IARC) — a World Health Organisation body. Potassium
bromate, according to an investigation made public on Monday by the Centre for
Science and Environment, was ubiquitous in several brands of bread and refined
flour products including burgers and pizza, in Delhi. Based on the quantity and
quality of scientific evidence that is available through peer-reviewed
literature and documented reports on the risk of cancer, the IARC follows a
five-step grading scheme, the highest of which is Grade 1, or substances that
are proven to cause cancer in humans, and the lowest at Grade 4 where there is
definite proof that there is no link to cancer. Active smoking, according to
the IARC’s primer on interpreting cancer categories, carried a much higher risk
of lung cancer than air pollution, although both are categorised in Group 1.
Ø The
Central government is all set to ban the use of potassium bromate — the
cancer-causing chemical found in bread samples tested by the Centre for Science
and Environment (CSE) — as a food additive. Health Minister J. P. Nadda
asserted that the government will take speedy and appropriate action.
Ø At more
than 8,000 ft above sea level, Mt. Everest remains a compelling challenge to
all mountaineers. Early on May 20, S. Prabhakaran from Tiruvannamalai, became
the first Indian Forest Service officer to reach the top of the world. A
2011-batch officer from the Karnataka cadre, Mr. Prabhakaran with five other
teammates from India, left for Kathmandu on April 8. In 2015, an All India
Services Expedition to Mount Everest was formed with five members and Prime
Minister Narendra Modi flagged off our journey on March 27. Due to the
earthquake which hit Nepal, the team had to come back from 6,000 meters.
Ø After
successfully testing a technology demonstrator of a reusable launch vehicle,
Indian Space Research Organisation (ISRO) is planning to test an air-breathing
propulsion system, which aims to capitalise on the oxygen in the atmosphere
instead of liquefied oxygen while in flight. The mission to test the
technology would be launched either in the last week of June or early July from
Satish Dhawan Space Centre at Sriharikota. The mission would be on a sounding
rocket. Generally, vehicles used to launch satellites into space use
combustion of propellants with oxidiser and fuel. Air breathing propulsion
system aims at use oxygen present in the atmosphere up to 50 km from the
earth’s surface to burn the fuel stored in the rocket. The new
propulsion system, once mastered, would complement ISRO’s aim to develop a
reusable launch vehicle, which would have longer flight duration. The system,
involving the scramjet engine, would become crucial while sending up the
spacecraft.
Ø Indian
Naval Sailing Vessel (INSV) Mhadei set sail from Goa on Tuesday with an
all-woman crew for a voyage to Port Louis in Mauritius skippered by Lt. Cdr.
Vartika Joshi, a Naval Constructor. The ship was flagged-off by R.Adm K.K.
Pandey from INS Mandovi at Verem in north Goa at a ceremony on Tuesday.
Ø A
trilateral transport corridor project, inked in Tehran this week by Prime
Minister Narendra Modi and the leaders of Iran and Afghanistan, has the
potential to alter the geopolitical map of South and Central Asia. Mr. Modi’s
visit also put an end to years of ambivalence on the development of Iran’s
Chabahar port on the Gulf of Oman, the focal point of the corridor project. New
Delhi and Tehran had agreed in 2003 to develop the port, near the Iran-Pakistan
border. But the project did not take off, mainly owing to international
sanctions against Iran over its nuclear programme, but also on account of
inertia in Delhi. The removal of sanctions after Iran’s nuclear deal has
provided New Delhi an opportunity to revitalise bilateral ties. The road, rail
and port development projects, once implemented, will change the way India,
Afghanistan and Iran do business. For India, the projects have specific
economic and strategic significance. India and Afghanistan have failed to
realise the full economic potential of their friendship owing to connectivity
problems. The Pakistan link between India and landlocked Afghanistan has been
an obstacle, given Islamabad’s tense diplomatic ties with both New Delhi and
Kabul, and sometimes with Tehran too. Once the Chabahar port is developed,
Indian ships will get direct access to the Iranian coast; a rail line to the
Afghan border town of Zaranj will allow India a route around Pakistan. This
will surely boost trade with Iran and Afghanistan. Besides, the proposed free
trade zone in the Chabahar area offers Indian companies a new investment
destination at a well-connected port city. India has already said its companies
will set up “plants in sectors such as fertilizers, petrochemicals and
metallurgy” in the zone. It will also supply $400 million worth of steel rails
to Tehran to build the railway link. From a strategic point of view,
Chabahar is situated just 100 km from Pakistan’s Gwadar port, the centrepiece
of a $46 billion economic corridor that China is building. Though the Indian
investment in Chabahar, at $500 million, does not match the scale of the
Chinese project, the Chabahar port will act as a gateway for India to Central
Asia bypassing the China-Pakistan arc. The long-term potential of this
connectivity is immense. The real challenge lies in execution. India’s record
in finishing big-ticket projects abroad is far from consistent. Also, with
Tehran becoming the new destination of global powers, India needs to energise
its diplomacy to keep engagement with Iran on an even keel, irrespective of
outside pressure. With the Chabahar project, India has raised the stakes in
Tehran substantially, and also raised the bar on its own regional ambitions. It
cannot afford to let bilateral ties drift again, as it happened over the past
decade.
Ø With the
successful launch on Monday of the first technology demonstrator of the
indigenously made Reusable Launch Vehicle (RLV), the Indian Space Research
Organisation (ISRO) has taken a baby step in building a vehicle that can be
reused multiple times to launch satellites into orbit. The hypersonic flight,
that lasted about 770 seconds from lift-off to splashdown in the Bay of Bengal,
reached an altitude of about 65 km before re-entering the atmosphere at nearly
five times the speed of sound. Many more such successful launches have to be
undertaken before the RLV becomes a reusable launch system to put satellites
into orbit. Some of the objectives of this week’s launch were to test the
aero-thermodynamic characterisation of the vehicle with wings when it re-enters
the atmosphere at hypersonic speed; the control and guidance system; the
control system to land the vehicle at a specific location; and the hot
structure, the basic body-carrying part of the vehicle with heat protecting
tiles. The ultimate objective is to test the vehicle’s performance when it
travels at a speed of Mach 25 using air-breathing propulsion. It will take 10
to 15 years, and several more launches, before ISRO readies a reusable launch
vehicle for commercial use. Building a fully and rapidly reusable launch
vehicle will play a pivotal role in cutting down by as much as 80 per cent the
cost of launching satellites into orbit. In fact, ISRO is already well-known
for launching satellites at a far cheaper cost than other space agencies.
Currently, the bulk of the launch cost comes from building the rocket, which
can be used just once, as the rockets get burnt on re-entry into the
atmosphere. No other space agency has reusable launch vehicles in operation,
and ISRO has taken a lead in developing one. Learning from the mistakes of the
U.S. National Aeronautics and Space Administration (NASA) in its space shuttle
programme, ISRO will not use the same reusable vehicle to launch satellites and
carry astronauts as it drastically reduces the payload capacity and thereby
increases the cost per kg. ISRO will also use cutting-edge technology to shield
the launch vehicle from intense heat to reduce, if not completely eliminate,
refurbishment expenses. Getting this right would enable the vehicle to be
reused within a very short span of time. If all works as per plan, ISRO should
be able to break even after 25 to 50 launches, bringing down the cost of
further launches on the same vehicle.
No comments:
Post a Comment