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A team of Indian scientists have developed a non-toxic, environmentally friendly, biodegradable polymer using guar gum and chitosan.
About:
Polysaccharide
Polysaccharide is one of the biopolymers having high potential for use in synthesis of packaging material. But due to some drawbacks of polysaccharides, like low mechanical properties, low barrier properties and high water-solubility, they are not preferred for packaging materials.
Guar gum-chitosan composite film
To overcome the challenges associated with polysaccharide, the team of scientists fabricated a guar gum-chitosan composite film. It is a cross-linked polysaccharide that do not use any plasticizer with the help “solution casting method”.
Properties of the film
The Fabricated biopolymer composite film had high water stability, high mechanical strength as well as excellent resistance towards harsh environmental conditions. The fabricated cross-linked film is not easily soluble in water. As per scientists, it did not dissolve even after 240 hours. Furthermore, the mechanical strength is higher compared to general biopolymer. It is highly water repellent or hydrophobic because of its high contact angle of 92.8º. Water vapor permeability is low as compared to the film made only from chitosan.
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The Ministry of Road, Transport & Highways launched a scheme for “Good Samaritans”.
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National Level Awards
What is golden hour?
‘Golden hour’ is the 1-hour time period after a traumatic injury. During this period, there is the highest possibilities of preventing death by providing prompt medical care.
Motor Vehicle Amendment Act, 2019
Rules had been notified under Section 134A of the Motor Vehicle Amendment Act 2019, on September 29, 2020 by the ministry.
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The Nobel Prize 2021 for physics was awarded to three scientists from Japan, Germany and Italy. Secretary-general of the Royal Swedish Academy of Sciences, Goran Hansson, announced the winners on October 5, 2021
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Demonstration by Syukuro Manabe
Since 1960s, he had demonstrated how increases in amount of carbon dioxide in the atmosphere increases the global temperatures. This demonstration laid the foundations for current climate models.
Demonstration by Klaus Hasselmann
He had created a model to link weather and climate. This model helped in explaining why climate models can be reliable despite the chaotic nature of weather. He also demonstrated ways to look after specific signs of human influence on the climate.
Model developed by Giorgio Parisi
He built a deep physical and mathematical model. This model made it possible to understand the complex systems in fields of mathematics, machine learning, biology and neuroscience.
Background
In the year 2020, the prize was conferred to Andrea Ghez from America, Roger Penrose from Britain and Reinhard Genzel from Germany for their research into black holes.
About Nobel Prize
The award comes with a gold medal as well as 10 million Swedish kronor. Money for prize comes from a bequest left by the creator of prize & Swedish inventor, Alfred Nobel.
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American scientists David Julius and Ardem Patapoutian won the prestigious “2021 Nobel Prize for Medicine”.
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About Nobel Prizes
The prestigious Nobel prizes for “science, literature and peace” were created and funded in the name of Swedish dynamite inventor and businessman Alfred Nobel. The prize has been awarded since 1901. The Nobel prize for economics was first conferred in 1969. This century-old prize is worth 10 million Swedish crowns.
Who is Ardem Patapoutian?
Ardem Patapoutian was born in 1967 in Lebanon, to Armenian parents. He moved to Los Angeles in his youth and currently he is a Professor at Scripps Research, La Jolla, California. He has done research at the University of California, San Francisco as well as at California Institute of Technology, Pasadena. He was awarded with The Nobel Prize for finding a cellular mechanism and underlying gene which translates a mechanical force on our skin into an electric nerve signal.
Who is David Julius?
Davis Julius was born in New York. He is a Professor at University of California, San Francisco. He was awarded for his findings on the skin’s sense of temperature on the basis of how certain cells react to capsaicin.
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Defence Minister Rajnath Singh felicitated the winners of ‘Dare to Dream 2.0’ Contest organised by Defence Research & Development Organisation (DRDO).
About:
Dare to Dream Contest
Dare to Dream contest was launched by DRDO across India to promote Indian academicians, individuals and start-ups for developing emerging defence and aerospace technologies or systems. Under the contest, DRDO provides technical and financial support to the winners, in a bid to realise their ideas under “Technology Development Fund (TDF) scheme”.
New system developed by DRDO
On the occasion, three indigenously developed products or systems by DRDO were handed over to Armed Forces:
Bund Blasting Device Mk-II: This device has been developed for Indian Army. It will help in reducing the height of Ditch-cum-Bund obstacles for enhancing mobility of mechanised infantry during wartime.
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Union Health Minister Mansukh Mandaviya launched an initiative on October 4, 2021 to facilitate COVID-19 vaccine delivery using “made in India drones” in the tough & hard-to-reach terrains of Northeast.
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This was the first time that a “Make in India’ drone has been used in South Asia for transporting COVID-19 vaccine for an aerial distance of 15 km. This distance was covered in 12-15 mins from Bishnupur district hospital to Loktak lake, Karang island in Manipur. Road distance between both the locations is 26 kms.
Use of drones
Which states are running similar projects?
Currently, drone-based delivery projects are being run in Manipur & Nagaland as well as Andaman & Nicobar Islands to overcome the challenges by deploying Unmanned Aerial vehicles (UAV) or drones in remote areas.
Which institution transferred drone technology?
ICMR conducted the initial study in association with “Indian Institute of Technology, Kanpur” for testing the capacity of drones to transfer and carry vaccines safely. ICMR conducted the study in Manipur, Nagaland and Andaman & Nicobar.
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Recently, Amazon has unveiled its ‘Astro’ home robot, which is designed to help customers with a range of tasks like home monitoring and keeping in touch with family.
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Issues Related to Privacy:
Other Recent Experiments:
WHY IN THE NEWS?
Recently, several prominent Indian names have been included in the Pandora Papers leak.
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Reasons for Setting up Trusts Overseas:
Legislative Action:
International Cooperation:
WHY IN THE NEWS?
Recently, the United Nations Development Programme (UNDP) and the Organisation for Economic Cooperation and Development (OECD), have launched the Tax Inspectors Without Borders (TIWB) Programme in Seychelles.
India has been chosen as the Partner Administration and has provided Tax Expert for this programme.
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Tax Inspectors Without Borders Programme:
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The Prime Minister paid tributes to revolutionary freedom fighter Shyamji Krishna Varma on his birth anniversary (4th October).
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