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GS Paper: GS3-17.Awareness in the fields of IT, Space, Computers, Robotics, Nano-technology, Bio-technology and issues relating to Intellectual Property Rights.

  • Honey Adulteration in India

    10 out of 13 popular honey brands failed a key test of purity, the Centre for Science and Environment (CSE) has claimed in an investigation.

    Try this PYQ:

    Q.Consider the following kinds of organisms:

    1. Bat
    2. Bee
    3. Bird

    Which of the above is/are pollinating agent/agents?

    (a) 1 and 2 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

    Adulteration in honey

    • The CSE has resorted to the Nuclear Magnetic Resonance (NMR) testing to ascertain the composition of a product at the molecular level.
    • The NMR test is not required by Indian law for honey that is being marketed locally but is needed for export.
    • Current regulations specify around 18 parameters that honey must comply with for producers to label it ‘pure honey.
    • Among the tests employed as per Indian regulations is one to check whether the honey is adulterated with C4 sugar (cane sugar) or C3 sugar (rice sugar).
    • Most samples cleared these tests but failed another test called the Trace Marker for Rice test, to test for rice syrup adulteration.

    Significance of the CSE study

    • Adulteration of honey is a global problem with several countries, including India, devising regulations and new tests to check it.
    • It also destroys the livelihoods of bee-keepers who found it unprofitable to make pure honey because sugar-syrup honey was often available at half the price.
    • Some Indian companies in the honey business were importing synthetic sugar syrups from China to adulterate honey.
    • This shows how the business of adulteration has evolved so that it can pass the stipulated tests in India.

    Back2Basics: Nuclear Magnetic Resonance (NMR)

    • NMR spectroscopy is a crucial analytical tool for organic chemists.
    • It is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus.
    • It is widely used to determine the structure of organic molecules in solution and study molecular physics and crystals as well as non-crystalline materials.
    • It is also routinely used in advanced medical imaging techniques, such as in magnetic resonance imaging (MRI).

  • Japan’s Hayabusa2 Probe

    A Japanese spacecraft is nearing Earth after a yearlong journey home from a distant asteroid with soil samples. It is set to land in Australia.

    Try this PYQ:

    Which of the following is/are cited by the scientists as evidence/evidence for the continued expansion of the universe?

    1. Detection of microwaves in space
    2. Observation of redshirt phenomenon in space
    3. Movement of asteroids in space
    4. Occurrence of supernova explosions in space

    Codes:

    (a) 1 and 2 only

    (b) 2 only

    (c) 1, 3 and 4

    (d) None of the above can be cited as evidence.

    Hayabusa2 Probe

    • Hayabusa2is an asteroid sample-return mission operated by the Japanese space agency, JAXA.
    • It follows on from the Hayabusa mission which returned asteroid samples in 2010.
    • It was launched on 3 December 2014 and rendezvoused with near-Earth asteroid 162173 Ryugu on 27 June 2018.
    • It surveyed the asteroid for a year and a half and took samples. It left the asteroid in November 2019.
    • It carries multiple science payloads for remote sensing, sampling, and four small rovers that investigated the asteroid surface to inform the environmental and geological context of the samples collected.

  • Zebrafish and its heart regeneration capacity

    Indian scientists have used the Zebrafish model and identified its genes that can promote heart regeneration.

    Try this PYQ:

    Q.With reference to India’s Biodiversity, Ceylon frogmouth, Coppersmith Barbet, Gray-chinned minivet and White-throated redstart are-

    (a) Birds

    (b) Primates

    (c) Reptiles

    (d) Amphibians

    Zebrafish

    • Zebrafish is a small (2-3 cm long) freshwater fish found in the tropical and subtropical regions.
    • The fish is native to South Asia’s Indo-Gangetic plains, where they are mostly found in the paddy fields and even in stagnant water and streams.
    • The fish become adults at three months and survive 2-3 years in a laboratory condition.
    • Its unique characteristics lie in its transparency during its embryonic stages, allowing observing all organs, including beating heart and blood circulation.

    Ability to heal their heart

    • The ability of Zebrafish to heal their heart after injury makes them an attractive model to investigate mechanisms governing the regenerative process.
    • Researchers worldwide are actively working to understand the mechanism behind the heart regeneration in Zebrafish for the last two decades.
    • Years of efforts have helped them identify the cellular communication network factor 2a (ccn2a), a gene that can promote heart regeneration by enhancing cardiomyocyte proliferation.
    • They have also observed that this gene resolves the transient collagenous fibrotic scar resulting in faster regeneration.

    Significance for humans

    • Cardiovascular diseases are the number 1 cause of deaths globally, taking an estimated 17.9 million lives each year, according to the World Health Organisation.
    • Humans cannot regenerate their hearts upon myocardial damage and a person who suffered a heart attack cannot functionally heal the damaged heart muscle, resulting in reduced pumping efficiency.
    • While on the other hand, this unique fish has the full potential to regenerate its heart and restore its function after injury.
    • Till now, there is no treatment available to restore the damaged heart function in humans. Hence scientists have sought to decode the heart regeneration processes using this model animal.

  • RT-LAMP: a new technology for detecting COVID-19

    Indian Council of Medical Research has recently validated the LAMP technology for COVID-19 testing.

    What is RT-LAMP?

    • RT-LAMP stands for Reverse Transcriptase loop-mediated isothermal amplification) technology.
    • Agappe Diagnostics has recently developed the technology indigenously, and their kit has been validated and approved by the ICMR for marketing.
    • It is named LUME Screen nCoV.

    How does it work?

    • RT-LAMP technology is a one-step nucleic acid amplification method to multiply specific sequences of RNA of the coronavirus.
    • The RNA is first made into cDNA (copy DNA) by the usual reverse transcription. Then, the DNA is amplified by the LAMP technique.

    Current method

    • •The current method diagnosis is the real time reverse transcription polymerase chain reaction (RT-PCR) test which detects the presence of viral nucleic acids in nasopharyngeal swab samples.
    • But it has certain shortcomings.
    • The test requires complex and costly equipment. It requires extensive training for potential users.

    Benefits of LAMP over RT-PCR

    • The LAMP technology is superior to the PCR technology–based COVID-19 kits where specificity is around 95% only.
    • As the specificity and sensitivity of the test is about 95%, there is a possibility of false negative results.
    • The turnaround time is about 10 hours, so that the result will be available only by the next day.
    • In remote places, the turnaround time further increases depending on the distance the samples need to travel.
    • In short, the RT-PCR does not have the capacity to keep pace with the increasing demand.
    • The LAMP technology does not need laborious preparation as in the case of RT-PCR. LAMP is cost effective and does not need complex expensive equipment.

     

  • What is Federated Learning?

    An improvement in a Machine Learning (ML) model, called ‘federated learning’, is said to enable companies to develop new ways of collecting anonymous data without compromising their privacy.

    Data privacy is the right of a citizen to have control over how personal information is collected and used. Data protection is a subset Right of Privacy under Article 21 of the Indian Constitution.

    What is ‘federated learning’?

    • Federated learning is an ML method used to train an algorithm across multiple decentralised devices or servers holding data samples.
    • It doesn’t exchange data with the devices, meaning there is no central dataset or server that stores the information.
    • Standard ML models require all data to be centralised in a single server. Implementation of federated learning eliminates the need for maintaining a storage hub.
    • The term was first introduced in a 2016 Google study titled ‘Communication-efficient learning of deep networks from decentralized data.’
    • Google emphasised mobile phones and tablets, stating that modern devices contain special features like speech recognition and image models that can store large amounts of data.
    • Since then, Google has used the technique is various products, including Gboard, which provides text and phrase suggestions to the keyboard.

    How this works

    • Federated learning aims to train an algorithm, like deep neural networks, on multiple local datasets contained in local nodes, without explicitly exchanging data.
    • The general principle involves simply exchanging parameters between these nodes. Parameters include a number of federated learning rounds, the total number of nodes, and learning rate.
    • The distinct advantage of the model is its ability to reduce privacy and security risks by limiting the attack surface to only the device, rather than the device and the cloud, Google stated in the study.

    Why need such technology?

    • Smart home devices like speakers and smartwatches collect and share data with other devices and systems over the network.
    • These Internet of Things (IoT) devices are equipped with sensors and software that store a user’s private information like body measurements and location.
    • This large chunk of stored data is used by the device makers to improve their products and services.

    Applications

    • Federated learning is said to have application in healthcare, where hospitals and pharmaceutical companies can exchange data for treating diseases without sharing private clinical information.

  • Giant Metrewave Radio Telescope (GMRT)

    The Giant Metrewave Radio Telescope (GMRT) has been selected as a ‘Milestone’ facility by the U.S.-based Institute of Electrical and Electronics Engineers (IEEE).

    Note: GMRT is not an ISRO mission.

    About GMRT

    • The GMRT located near Pune is an array of thirty fully steerable parabolic radio telescopes of 45-metre diameter, observing at metre wavelengths.
    • It is operated by the National Centre for Radio Astrophysics (NCRA), a part of the Tata Institute of Fundamental Research, Mumbai.
    • It was conceived and built under the direction of Late Prof. Govind Swarup from 1984 to 1996.
    • At the time it was built, it was the world’s largest interferometric array offering a baseline of up to 25 kilometres (16 mi).
    • Astronomers from all over the world regularly use this telescope to observe many different astronomical objects such as HII regions (interstellar atomic hydrogen that is ionized), galaxies, pulsars, supernovae, and Sun and solar winds.

    A significant feat

    • IEEE is the world’s largest technical professional organisation dedicated to advancing technology in all areas related to electrical and electronics engineering.
    • The IEEE Milestones programme honours significant technical achievements which have a global or regional impact. This is only the third such IEEE ‘Milestone’ recognition for an Indian contribution.
    • The previous two Indian IEEE Milestones were for the pioneering work done by Sir J.C. Bose to demonstrate the generation and reception of radio waves in 1895 (recognised in 2012), and for the Nobel Prize-winning (in 1930) ‘scattering of light’ phenomenon observed by Sir C.V. Raman in 1928.

  • Chang’e-5 Lunar Probe

    China is preparing to launch an unmanned spacecraft to bring back lunar rocks, the first attempt by any nation to retrieve samples from the moon in four decades.

    Try this PYQ:

    Q.What do you understand by the term Aitken basin:

    (a) It is a desert in the southern Chile which is known to be the only location on earth where no rainfall takes place

    (b) It is an impact crater on the far side of the Moon

    (c) It is a Pacific coast basin, which is known to house large amounts of oil and gas

    (d) It is a deep hyper saline anoxic basin where no aquatic animals are found

    Chang’e-5 Probe

    • The Chang’e-5 probe, named after the mythical Chinese moon goddess, aims to shovel up lunar rocks and soil to help scientists learn about the moon’s origins, formation and volcanic activity on its surface.
    • The goal of the mission is to land in the Mons Rumker region of the moon, where it will operate for one lunar day, which is two weeks long.
    • It will collect 2 kg of surface material from a previously unexplored area known as Oceanus Procellarum — or “Ocean of Storms” — which consist of vast lava plain.
    • The original mission, planned for 2017, was delayed due to an engine failure in China’s Long March 5 launch rocket.
    • If successful, China will be only the third country to have retrieved samples from the moon, following the U.S. and the Soviet Union in the 1960s and 1970s.

    Significance of the mission

    • As per the Lunar and Planetary Institute, rocks found on the Moon are older than any that have been found on Earth and therefore they are valuable in providing information about the Earth and the Moon’s shared history.
    • Lunar samples can help to unravel some important questions in lunar science and astronomy, including the Moon’s age, its formation, the similarities and differences between the Earth and the Moon’s geologic features.
    • For instance, the shape, size, arrangement and composition of individual grains and crystals in a rock can tell scientists about its history, while the radioactive clock can tell them the rock’s age.
    • Further, tiny cracks in rocks can tell them about the radiation history of the Sun in the last 100,000 years.

  • Sentinel-6 Satellite

    The Copernicus Sentinel-6 Michael Freilich satellite, designed to monitor oceans, was launched from the in California.

    Try this MCQ:

    The Jason Continuity of Service (Jason-CS) Mission recently seen in news is aimed at observing:

    (a)Microgravity changes

    (b)Sea level rise

    (c)Cosmic radiation

    (d)Space debris

    Sentinel-6 Satellite

    • This is a part of the next mission dedicated to measuring changes in the global sea level.
    • It has been named after Dr Michael Freilich, who was the Director of NASA’s Earth Science Division from 2006-2019 and passed away in August this year.

    What is the mission?

    • The mission, called the Jason Continuity of Service (Jason-CS) mission, is designed to measure the height of the ocean, which is a key component in understanding how the Earth’s climate is changing.
    • The spacecraft consists of two satellites, the other, called Sentinel-6B, to be launched in 2025.
    • It has been developed jointly by the European Space Agency (ESA), NASA, and France’s National Centre for Space Studies (CNES).

    What will the satellite do?

    • The satellite will ensure the continuity of sea-level observations into the fourth decade and will provide measurements of global sea-level rise.
    • Since 1992, high-precision satellite altimeters have helped scientists understand how the ocean stores and distributes heat, water and carbon in the climate system.
    • Essentially, the satellite will send pulses to the Earth’s surface and measure how long they take to return to it, which will help scientists measure the sea surface height.
    • It will also measure water vapour along this path and find its position using GPS and ground-based lasers.

    Significance of the mission

    • As per NASA, it is possible to observe the height of the oceans on a global scale and monitor critical changes in ocean currents and heat storage only from space.
    • Data from satellites such as Sentinel-6 help scientists foresee the effects of the changing oceans on the climate.
    • Further, in order to measure and track changes in the oceanic heat budget, scientists need to know the ocean currents and heat storage of the oceans, which can be determined from the height of the sea surface.

  • [pib] IRNSS now part of World Wide Radio Navigation System

    The Indian Regional Navigation Satellite System (IRNSS) has been accepted as a component of the World Wide Radio Navigation System (WWRNS) for operation in the Indian Ocean Region by the International Maritime Organization (IMO).

    Try this PYQ:

    With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements:

    1. IRNSS has three Satellites in geostationary and four satellites the geosynchronous orbits.
    2. IRNSS covers entire India and about 5500 sq. km beyond its borders.
    3. India will have its own satellite navigation system with full global coverage by the middle of 2019.

    Which of the statements given above is/are correct?

    (a) 1 only            

    (b) 1 and 2 only

    (c) 2 and 3 only

    (d) None

    What is IRNSS?

    • The IRNSS, with an operational name of NavIC (acronym for Navigation with Indian Constellation) is an Indian regional satellite navigation system that provides accurate real-time positioning and timing services.
    • It covers India and a region extending 1,500 km around it, with plans for further extension.
    • The system currently consists of a constellation of seven satellites, with two additional satellites on ground as stand-by.
    • The constellation is in orbit as of 2018, and the system was expected to be operational from early 2018 after a system check.
    • It will provide two levels of service, the “standard positioning service”, which will be open for civilian use, and a “restricted service” (an encrypted one) for authorised users (including the military).

    Benefits of the move

    • This move will enable merchant vessels to use IRNSS for obtaining position information similar to GPS and GLONASS.
    • This will assist in the navigation of ships in Indian ocean waters within the area covered by 50°N latitude, 55°E longitude, 5°S latitude and 110°E longitude (approximately up to 1500 km from Indian boundary).

    Back2Basics: International Maritime Organisation (IMO)

    • IMO is the UN specialized agency with responsibility for the safety and security of shipping and the prevention of marine pollution by ships.
    • Its primary purpose is to develop and maintain a comprehensive regulatory framework for shipping and its remit today includes safety, environmental concerns, legal matters, technical co-operation, maritime security and the efficiency of shipping.
    • IMO is governed by an assembly of members and is financially administered by a council of members elected from the assembly.

  • Community Cord Blood Banking

    Community Cord Blood Banking, a stem cell banking initiative, has recently helped save the life of a girl child making it India’s first dual cord blood transplant through an unrelated donor.

    Must read:

    What is Cord Blood Banking?

    • Community Banking is a new sharing economy model of stem cell banking that was pioneered by LifeCell in India.
    • Parents who choose to store their child’s cord blood in a community bank will have access, in the event of medical need, to all of the other cord blood units in the bank.
    • A community bank is like a public cord blood bank in that the members are supporting each other, but it is also like a private bank because the members pay for this service and outsiders cannot participate.
    • It can fill an unmet health need in a country like India, where there is no national network of public banks and the population has unique genetics that are not covered by banks elsewhere in the world.
    • It is different from “hybrid” banking where both public and family banks share a laboratory, because in hybrid banks the pubic and family sides operate separately.
    • In a community bank the public and family functions are blended.

    Benefits of cord blood

    • It gives protection to a baby against all conditions treatable using stem cells (own & donor).
    • It gives protection to the baby’s siblings, parents and grandparents (maternal & paternal) by providing unrelated donor stem cells.

    Back2Basics: Stem Cell Therapy

    • It is a type of treatment option that uses a patient’s own stem cells to repair damaged tissue and repair injuries.
    • It is used to treat more than 80 disorders including neuromuscular and degenerative disorders. Eg. Bone-marrow transplant is used in Leukemia (blood cancer), sickle-cell anemia, immunodeficiency disorders.
    • Stem cells are usually taken from one of the two areas in the patient’s body: bone marrow or adipose (fat) tissue in their upper thigh/abdomen.
    • Because it is common to remove stem cells from areas of stored body fat, some refer to stem cell therapy as “Adipose Stem Cell Therapy” in some cases.