सामयिक विषय: Defense/Science Short Notes

Discovery of plastic Eating Fungus

Discovery of plastic Eating Fungus

Question:-Polyurethane (PU) is a form of-
(a) Medicine for Urinary Infections
(b) A fertilizer
(c) Plastics
(d) Cancer drug
Related Facts:-

  • Scientists from the Chinese Academy of Sciences (CAS) have found solution to plastic Pollution.
  • These researchers found the plastic-eating fungus living in a rubbish heap in Islamabad, Pakistan.
  • Aspergillus tubingensis is a fungus which ordinarily lives in the soil. However, during laboratory trials, the researchers found that it also grows on the surface of plastics
  • The fungus secretes enzymes onto the surface of the plastic, which break the chemical bonds between the plastic molecules or polymers
  • They took samples of soil and various pieces of trash hoping to find finding an organism which could feed on plastic waste in the same way that other fungi feed on dead plant or animal material
  • Aspergillus tubingensis fungus was isolated by research team led by Xu Jianchu a research from Chinese Academy of Sciences.
  • The fungus can grow on the surface of PU and break the chemical bonds between plastic molecules or polymer through the activity of enzymes.
  • This discovery may become boon for pollution problem created by huge plastic wastes.
  • Plastic waste is difficult to decompose, pollutes soil and water and poses risks to human health.

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INS Vikramaditya fires surface-to-air missile

Successful test of Barak missile

Question- Recently, from which vessel, Indian Navy successfully tested the short range surface to air Barak missile?
(a) INS Kolkata
(b) INS Vikramaditya
(c) INS Arihant
(d) INS Godavari
Ans: (b)
Related facts:-

  • During 21 to 23 March 2017; the Indian Navy successfully tested the low range Barak Missile, capable of hitting from surface to air, from the aircraft carrier INS Vikramaditya.
  • In this trial in the Arabian Sea, the missile successfully destroyed the target flying at a very low altitude but very fast speed.
  • It is worth mentioning that INS Vikramaditya was included in the Navy in November 2013.
  • The Barak missile was developed jointly by Defense Research and Development Organization (DRDO) and Israel Aerospace Industries (I.A.I.).

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INLCU L51 commissioned into the Indian Navy

INLCU L51 commissioned into the Indian Navy

Question: Recently Indian Navy’s surveillance ship, INLCU L51 was commissioned into the Indian Navy at…
(a) Port Blair
(b) Vishakhapattanam
(c) Kolkata
(d) Kochin
Ans: (a)

  • On 28th March, 2017, Indian Navy’s latest surveillance ship, INLCU L51 was commissioned into the Indian Navy at Port Blair.
  • It is the first of the eight ships of the LCU Mk IV Class. It has been built by M/s Garden Reach Ship Builders & Engineers Ltd, Kolkata. It was designed indigenously.
  • It has a displacement of 900 tons the magnificent ship spans 62.8 m in length and 11 m in breadth.
  • The ship is propelled by 02 MTU diesel engines of 1840 Kw rating and can sustain speeds up to 15 knots. The ship has been built to assist in amphibious operations by carrying out beaching operations and has an endurance of 1500 nm.
  • The armament onboard the ship consists of two 30 mm CRN -91 guns manufactured by Ordnance Factory, Medak. The gun is controlled by an electrical day-night fire control system namely Stabilised Optronic Pedestal manufactured by Bharat Electronic Limited. The ship is also equipped with 12.7 mm Heavy Machine Guns and 7.62 mm Medium Machine Guns.
  • The commissioning of the ship adds a feather to the glorious chapter in the nation’s ‘Make in India’ initiatives in the field of warship design and construction.
  • The ship will play a key role in carrying out maritime surveillance of Andaman & Nicobar Islands for preventing anti-poaching, illegal fishing, drug trafficking, human trafficking, poaching and other illegal activities.
  • It will also enhance the capabilities of the Andaman and Nicobar Command in Humanitarian Assistance and Disaster Relief (HADR) operations.


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