UPSC CURRENT AFFAIRS| PRELIMS & MAINS | 23rd May 2020

Daily UPSC Current Affairs | 23rd May 2020

Dear Aspirants
IASbhai Daily Current Affairs for UPSC PRELIMS & MAINS 2020 is an initiative to dilute major articles from leading Newspapers in India which are most relevant to UPSC preparation –‘THE HINDU, LIVEMINT , INDIAN EXPRESS’ and help millions of readers who find difficulty in answer writing and making notes everyday. Hence we choose articles on daily basis and analyse them with respect to UPSC PRELIMS 2020.

Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all.– Dale Carnegie

HIGHLIGHT INFO:

ORANGE COLOUR: Important for Prelims.

RED COLOUR: Important for Mains.

BLACK COLOUR: Must Read !

BLUE COLOUR : Important Links/Survey.

PINK COLOUR: Reports/Themes/Summits.

Electrochemical sensing platform for detecting carcinogenic

      HEADLINES:

IASST develops electrochemical sensing platform for detecting carcinogenic & mutagenic compounds in food

      WHY IN NEWS:

Hot from PIB !

MINISTRY? :- Ministry of Science & Technology
SYLLABUS COVERED: GS 3:Science and Technology

      LEARNING: 

For PRELIMS get familiar with new technologies and definitions mentioned below in this research .

      RESEARCH: 

  Institute of Advanced Study in Science and Technology (IASST), Guwahati, has developed an electrochemical sensing platform for detecting carcinogenic or mutagenic compound N-nitrosodimethylamine (NDMA) and N-nitrosodiethanolamine (NDEA) sometimes found in food items like cured meat, bacon, some cheese, and low-fat milk.

HOW WAS THIS ACHIEVED ?

  • CARBON DOTS : It was achieved by developing a modified electrode by immobilizing carbon nanomaterials (carbon dots) in DNA.
  • NITROSAMINE :  Urban Indians are exposed to harmful chemicals belonging to Nitrosamine family in cured meats, bacon, some cheese, low-fat dry milk, and fish.
  • Such chemicals include carcinogenic ones like NDMA and NDEA, which may also alter the chemical composition of our DNA.
  • Hence it is important to develop detection techniques to detect them.

PRINCIPLE
Fabricated an electrochemical biosensor using DNA immobilized on the surface of carbon dots for sensitive and selective detection of N-nitrosamine.

  • Carbon dots (CDs), a carbon-based nanomaterial, was used, which is already established as a biocompatible and environmentally friendly material.
  • Naturally derived chitosan, (natural biopolymer obtained from the shells of shrimp, lobster, and crabs) is an environment-friendly sustainable material that was used to synthesize CDs.
  • As this is an electrochemical sensor, electrode was developed by depositing carbon dots (carbon nanoparticles) and then immobilizing bacterial DNA on them.
  • This electrode system was used to measure the current peak.

      IASbhai WINDUP:

  • The scientists took advantage of the fact that out of the base pairs A, T, G, C, Guanine (G) is electrochemically active.
  • But as these chemicals cannot alter the DNA sequence, hence they do not affect the system.
     SOURCES:THE HINDU & PIB/DAILY CURRENT AFFAIRS for UPSC CSE Prelims & Mains

New species of dragonfly discovered

      HEADLINES:

New species of dragonfly discovered in the Konkan

      WHY IN NEWS:

The Konkan Rockdweller is endemic to the region and likes to perch on rocks or concrete walls

SYLLABUS COVERED: GS 3:Conservation of Bio-diversity

      LEARNING: 

For PRELIMS just go through the facts . That should suffice for any kind of MCQ’s in the exam.

      ISSUE: 

  A new species of dragonfly that is endemic to the lowland region of Konkan in Maharashtra, has been profiled in a study published on May 20, 2020.  

  • Bradinopyga konkanensis, christened ‘Konkan Rockdweller’ has been discovered by dragonfly enthusiast and photographer .
  • Dragonflies and damselflies, that belong to the Order Odonata, are some of the ecologically important insects of freshwater habitats.
  • The Western Ghats are home to about 196 species of odonates, more than 40 per cent of which are endemic to the region.

A female Konkan Rockdweller from Devgad. Photo: Dattaprasad Sawant

Konkan Rockdweller

  • After close inspection, the insect was found to be a new species unknown to science.
  • “This indicates that this species is restricted to the coastal zone.
  • Perhaps due to its similarity with another species, the Granite Ghost, it has remained undescribed,”
  • “This is the only species of dragonfly or damselfly known to be endemic to the lowland coastal region of Konkan.

      IASbhai WINDUP: 

This species prefers to perch on rocks and even concrete walls, which prompted them to give it the name Konkan Rockdweller,”

     SOURCES:THE HINDU & PIB/DAILY CURRENT AFFAIRS for UPSC CSE Prelims & Mains

‘80% success chance for Oxford trials’

      HEADLINES:

‘80% success chance for Oxford trials’

      WHY IN NEWS:

Serum Institute chief says the potential vaccine is based on a tried-and-tested platform

SYLLABUS COVERED: GS 3:Health:Diseases

      LEARNING: 

For PRELIMS this is a key update to the vaccine ! Dive in .

      ISSUE: 

  If the world is to gain access to a vaccine for COVID-19, there is a good chance it will pass through the doors of the Serum Institute of India here.

  • Serum has partnered with U.S. biotech firm Codagenix, its U.S. rival Novavax and Austria’s Themis to potentially manufacture three COVID-19 vaccine candidates.
  • The institute, the world’s largest manufacturer of vaccines by volume, is working on several candidates, including potentially mass-producing the AstraZeneca/Oxford University one, as well as developing its own.
  • India quietly plays a key role in manufacturing 60%-70% of all vaccines sold globally with the Serum Institute playing a lead role.
  • The United States has secured almost a third of the first 1 billion doses planned for the potential vaccine, initially known as ChAdOx1 and now as AZD1222, by pledging up to $1.2 billion.
  • The aims to initially produce 4-5 million doses a month, beginning from June, and then gradually ramp up to 350-400 million doses a year.
  • He sees AZD1222 potentially priced at about ₹1,000.

      IASbhai WINDUP: 

Based on the information currently available, he said he anticipated AZD1222 would be a single-dose vaccine and not require a booster dose.

     SOURCES:THE HINDU & PIB/DAILY CURRENT AFFAIRS for UPSC CSE Prelims & Mains

 Let us ‘Discuss’

      IASbhai WINDUP: 

Let us know what you think about this in the comment section.

     SOURCES:THE HINDU/DAILY CURRENT AFFAIRS for UPSC CSE Prelims & Mains

 

DISCOVER MORE : Important Daily Current Affairs for UPSC PRELIMS 2020

 

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