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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.

  • National Hydrogen Mission

    During his I-Day speech, the PM has announced a National Hydrogen Mission and said India will become the world’s largest exporter of green hydrogen in the years to come.

    National Hydrogen Mission

    • The PM’s announcement takes forward the proposal, made in the 2021 Budget, for the launch of NHM that would enable the generation of hydrogen “from green power sources”.
    • The added advantage of hydrogen is that, apart from transportation, it can be a “decarbonizing agent” for industries like chemicals, iron, steel, fertilizer and refining, transport, heat and power.
    • While the details of the NHM are yet to emerge, India has taken several exploratory steps.
    • India has been working on a pilot project on Blue Hydrogen, Hydrogen CNG (H-CNG), and Green Hydrogen.
    • Several programs are focusing to blend hydrogen with compressed natural gas for use as a transportation fuel as well as an industrial input to refineries.

    Hydrogen as a fuel

    • Hydrogen is the fuel of stars and packs awesome energy. It is also the most abundant element in the universe.
    • But on Earth, it is found in complex molecules such as water or hydrocarbons.
    • Hydrogen is not a source of energy, like fossil fuels or renewable sources like sunlight and air, but an energy carrier, which means it has to be produced, or extracted, and stored before it can be used.
    • But no matter how it is used, the by-product the burning of hydrogen produces is water.

    How is Hydrogen produced?

    • There are several ways of extracting hydrogen and, depending on the method, the hydrogen produced is classified as ‘grey’, ‘blue’, or ‘green’ hydrogen.
    • According to WEC, as of 2019, 96 percent of hydrogen is produced from fossil fuels via carbon-intensive processes.
    • Hydrogen thus obtained is called ‘grey’ hydrogen as the process, though not as expensive as the other methods, releases a lot of carbon dioxide.

    What Is Grey, Blue, Green Of Hydrogen?

    • ‘Grey’ hydrogen becomes ‘blue’ hydrogen when the CO2 given out during its production is locked up through carbon capture and storage (CCS) processes.
    • But while the CO2 output is lowered, this process is quite expensive.
    • ‘Grey’ and ‘blue’ hydrogen, thus, are both produced by the same processes, the only difference for ‘blue’ hydrogen being that the CO2 produced is sequestered.
    • But it is ‘green’ hydrogen that governments are aiming at. This is any hydrogen that is produced from clean energy sources like renewables.
    • ‘Green’ hydrogen is released via the electrolysis of energy from renewable sources. This process, though it gives rise to no CO2 emissions, is expensive and not commercially viable yet.

    Key challenges

    • Lack of infrastructure:  India does not have enough storage capacity for the current state of domestic consumption.
    • Safety concerns: Hydrogen is highly inflammable.

    Way ahead

    • Developing technologies to produce ‘green’ hydrogen is cost-intensive.
    • However, falling renewable energy and fuel cell prices and stringent climate change requirements have provided an impetus for investments in this area.
    • In India, the IITs, IISc, Benaras Hindu University, Council for Scientific and Industrial Research laboratories etc. are exploring different aspects of hydrogen production.

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    Also read:

    [Burning Issue] India’s push for a Gas-based Economy

  • CHAPEA Mission by NASA

    NASA is seeking applications for its new mission called the Crew Health and Performance Exploration Analog (CHAPEA), which is related to Mars.

    CHAPEA

    • The mission is set to begin in 2022 and will give four successful applicants the chance to live and work in a 1,700 square-foot module that is created by a 3D printer and is called the Mars Dune Alpha.
    • The simulated quarters include a kitchen, areas for medical, recreation, fitness, work, crop growth, a technical work area and two bathrooms.
    • This habitat will simulate what it feels like to carry out missions on Mars including resource limitations, equipment failure, communication delays and any other environmental stressors.
    • The crew will be expected to perform simulated spacewalks, scientific research and use virtual reality and robotic controls and exchange communications.

    What is the purpose of this mission?

    • The habitat in which the crew members will stay will be as Mars-realistic as possible.
    • The results from this analog mission will provide scientific data that will help in validating the systems that will be used for actual missions to Mars and also help in solving problems for spaceflight research.
    • CHAPEA is not the only analog mission, there are others including Aquarius/NEEMO, Concordia, Desert RATS, and HESTIA.
    • Analog missions are required because not all experiments can be carried out in space because resources and money are limited.

  • What is Retractable Roof Polyhouse?

    The CSIR-CMERI has recently inaugurated a “naturally ventilated polyhouse facility” and laid the foundation stone of “retractable roof polyhouse”.

    What is a Polyhouse?

    • A polyhouse is a specially constructed structure like a building where specialized polythene sheet is used as a covering material under which crops can be grown in partially or fully controlled climatic conditions.
    • It is covered with a transparent material as to permit the entry of natural light. Polyhouses are also helpful in reducing threats such as extreme heat and pest attacks in crops.
    • This is especially important for crops growing in the open field with no protection from the weather, and therefore its yield, quality, and crop maturity timings are changed.

    Retractable Roof Polyhouse

    • The retractable roof system is a modular screen system for greenhouses that helps in saving costs and time along with providing stability, flexibility & durability for the greenhouse structure.
    • Such polyhouse will have an automatic retractable roof which will be operated based on weather conditions and crop requirements from the conditional database using the software.

    Advantages offered

    • Ability to use the benefits of natural weather conditions
    • Long life of the system and material used
    • Easy assembly and installation
    • Maximum insulation and complete protection from insecticides
    • Easy maintenance & even easier repair work during operation

    Why need such polyhouse?

    • With rapidly rising temperatures due to mounting greenhouse gases in the atmosphere from human activities, crops are increasingly facing both threats — extreme heat and pest attacks — simultaneously.
    • Crop losses in India due to insect pests are about 15 percent at present and this loss may increase as climate change lowers the plant defense system against insects and pests.
    • Conventional greenhouses have a stationary roof to reduce the effect of weather anomalies and pests.
    • However, there are still disadvantages due to roof covering which sometimes lead to excessive heat and insufficient light (early morning).
    • Besides this, they are also prone to insufficient levels of carbon dioxide, transpiration, and water stress.

  • Experts raise concerns over mandatory food fortification

    In a pushback against the Centre’s plan to mandatorily fortify rice and edible oils with vitamins and minerals, a group of scientists and activists have warned of the adverse impacts on health and livelihoods.

    Food Fortification

    • Food fortification is defined as the practice of adding vitamins and minerals to commonly consumed foods during processing to increase their nutritional value.
    • It is a proven, safe and cost-effective strategy for improving diets and for the prevention and control of micronutrient deficiencies.

    Types of food fortification

    Food fortification can also be categorized according to the stage of addition:

    1. Commercial and industrial fortification (wheat flour, cornmeal, cooking oils)
    2. Biofortification (breeding crops to increase their nutritional value, which can include both conventional selective breeding, and genetic engineering)
    3. Home fortification (example: vitamin D drops)

    Advantages offered

    • Health: Fortified staple foods will contain natural or near-natural levels of micro-nutrients, which may not necessarily be the case with supplements.
    • Taste: It provides nutrition without any change in the characteristics of food or the course of our meals.
    • Nutrition: If consumed on a regular and frequent basis, fortified foods will maintain body stores of nutrients more efficiently and more effectively than will intermittently supplement.
    • Economy: The overall costs of fortification are extremely low; the price increase is approximately 1 to 2 percent of the total food value.
    • Society: It upholds everyone’s right to have access to safe and nutritious food, consistent with the right to adequate food and the fundamental right of everyone to be free from hunger

    Issues with fortified food

    • Against nature: Fortification and enrichment upset nature’s packaging. Our body does not absorb individual nutrients added to processed foods as efficiently compared to nutrients naturally occurring.
    • Bioavailability: Supplements added to foods are less bioavailable. Bioavailability refers to the proportion of a nutrient your body is able to absorb and use.
    • Immunity issues: They lack immune-boosting substances.
    • Over-nutrition: Fortified foods and supplements can pose specific risks for people who are taking prescription medications, including decreased absorption of other micro-nutrients, treatment failure, and increased mortality risk.

  • NASA-ISRO Synthetic Aperture Radar

    The NASA-ISRO Synthetic Aperture Radar satellite, aimed at making global measurement of land surface changes using advanced radar imaging, is proposed to be launched in early 2023, informed Earth Sciences Minister.

    Note the key features of the Mission. Every statement has a unique information.

    NASA-ISRO SAR

    • NISAR is a joint collaboration for a dual-frequency L and S-band SAR for earth observation.
    • NASA and Bengaluru-headquartered ISRO signed a partnership on September 30, 2014, to collaborate on and launch NISAR.
    • The mission is targeted to launch in early 2022 from ISRO’s Sriharikota spaceport in Andhra Pradesh’s Nellore district, about 100km north of Chennai.
    • It is capable of producing extremely high-resolution images for a joint earth observation satellite mission with NASA.
    • It will be the first satellite mission to use two different radar frequencies (L-band and S-band) to measure changes in our planet’s surface less than a centimeter across.

    Objectives of the NISAR

    • NISAR will observe Earth’s land and ice-covered surfaces globally with 12-day regularity on ascending and descending passes, sampling Earth on average every six days for a baseline three-year mission.
    • It will measure Earth’s changing ecosystems, dynamic surfaces, and ice masses, providing information about biomass, natural hazards, sea-level rise, and groundwater, and will support a host of other applications.
    • It would also provide data on natural hazards including earthquakes, tsunamis, volcanoes, and landslides.

    What are L and S Bands?

    • L band waves are used for GPS units because they are able to penetrate clouds, fog, rain, storms, and vegetation.
    • The S-band is used by airport surveillance radar for air traffic control, weather radar, surface ship radar, and some communications satellites, especially those used by NASA to communicate with the Space Shuttle and the International Space Station.
    • NISAR uses a sophisticated information-processing technique known as SAR to produce extremely high-resolution images.
    • Radar penetrates clouds and darkness, enabling NISAR to collect data day and night in any weather.

    What is collaboration?

    • NASA is providing the mission’s L-band SAR, a high-rate communication subsystem for science data, GPS receivers, a solid-state recorder, and payload data subsystem.
    • ISRO is providing the spacecraft bus, the S-band radar, the launch vehicle, and associated launch services for the mission, whose goal is to make global measurements of the causes and consequences of land surface changes using advanced radar imaging.

  • Stellar Mid-life Crisis: What ails the middle-aged Sun?

    Stars like our Sun can go through a mid-life crisis, according to new research carried out by scientists from IISER Kolkata.

    Stellar Middle Age

    • At about 4.6 billion years of age, the sun is middle-aged, that is, it will continue to live for roughly the same period.
    • There are accurate methods for estimating the age of the Sun, such as by using radioactive dating of very old meteorites that have fallen on the Earth.
    • However, for more distant stars which are similar in mass and age to the Sun, such methods are not possible.
    • One of the methods used is called gyrochronology.
    • There is a relationship between rotation rate and age, that is the rotation rate of a star slows down with age.

    How does it occur?

    • When the stellar wind escapes from the star, it carries away with it a part of the angular momentum of the star, which results in its slowing down.
    • The stellar wind has two drivers: one is the high temperature of the outer atmosphere of stars – the corona – which results in an outward expansion and hence plasma winds that emanate out.
    • The other is the magnetic field.
    • The magnetic field actually heats the corona and so when magnetic activity is strong the winds are strong and since wind carries away the internal (rotational) angular momentum of the star, it slows down its rotation.
    • This is called magnetic braking.
    • As the star ages, due to this mechanism, its rotation slows down and this relationship is used in gyrochronology to estimate the age of the star.

    Impact

    • This can lead to dramatic changes in their activity and rotation rates.
    • The study also provides an explanation for the breakdown of the long-established relation between rotation rate and age in middle-aged sunlike stars.
    • However, there is a breakdown of the gyrochronology relationship, because, after midlife, a star’s rate of spin does not slow down with age as fast as it was slowing down earlier.
    • Another intriguing fact is that the Sun’s activity level has been observed to be much lower than other stars of similar age.

  • [pib] Near-Surface Shear Layer (NSSL) of Sun

    Indian astronomers have found a theoretical explanation for the existence of the Near-Surface Shear Layer (NSSL) of the Sun for the first time.

    What is a Near-Surface Shear Layer?

    • It was long known the Sun’s equator spins faster than the poles.
    • However, a peek into the internal rotation of the Sun using sound waves revealed the existence of an intriguing layer where the rotation profile of the Sun changes sharply.
    • The layer is called as a near-surface shear layer (NSSL), and it exists very close to the solar surface, where there is an outward decrease in angular velocity.

    What have researchers found?

    • They have used an equation called the thermal wind balance equation to explain how the slight difference in temperature between solar poles and equator, called thermal wind term.
    • It is balanced by the centrifugal force appearing due to solar differential rotation.
    • They have noted that if this condition is true near the solar surface, it can explain the existence of NSSL, which is inferred in helioseismology (technique of using sound waves to peek inside the Sun) based observation.

    Why study NSSL?

    • Understanding NSSL is crucial for the study of several solar phenomena like sunspot formation, solar cycle, and it will also help in understanding such phenomena in other stars.

  • [pib] What are PRIDE Guidelines?

    The Union Ministry for Science & Technology has released “Biotech-PRIDE (Promotion of Research and Innovation through Data Exchange) Guidelines” developed by the Department of Biotechnology (DBT).

    Biotech-PRIDE

    • These guidelines aim at providing a well-defined framework and guiding principle to facilitate and enable sharing and exchange of biological knowledge, information and data.
    • They will facilitate this and enable the exchange of information to promote research and innovation in different research groups across the country.
    • They will be implemented through the Indian Biological Data Centre (IBDC) at Regional Centre for Biotechnology supported by the Department of Biotechnology.

    Creating a national repository: Bio-Grid

    • Other existing datasets/ data centres will be bridged to this IBDC which will be called Bio-Grid.
    • This Bio-Grid will be a National Repository for biological knowledge, information and data.
    • It will be responsible for enabling its exchange, developing measures for safety, standards and quality for datasets and establishing detailed modalities for accessing data.

     Why need such guidelines?

    • India ranks number 4 amongst the top 20 countries contributing biological databases.
    • The Government invests a large number of public funds for biosciences to gain deep insights into intricate biological mechanisms and other processes and for translation.

  • Geo-imaging satellite EOS-03

    Geo-imaging satellite for earth observation EOS-03, which would enable near real-time monitoring of natural disasters like floods and cyclones, is scheduled for launch in the third quarter of 2021.

    EOS-03

    • ISRO has realized a geo-imaging satellite, “EOS-03”, for Earth Observation from Geostationary Orbit.
    • EOS-03 is capable of imaging the whole country four-five times daily and would enable near real-time monitoring of natural disasters like floods and cyclones.
    • In addition to natural disasters, EOS-03 would also enable monitoring of water bodies, crops, vegetation condition, forest cover changes.

    Other developments: Small Satellite Launch Vehicle (SSLV)

    • The first developmental flight of the Small Satellite Launch Vehicle (SSLV) is scheduled for the fourth quarter of 2021 from the Satish Dhawan Space Centre, Sriharikota.
    • The SSLV is a cost-effective, three-stage and all-solid launch vehicle with a payload capability of 500 kg to 500 km planar orbit or 300 kg to Sun-Synchronous Polar Orbit.
    • It is ideal for the on-demand, quick turn-around launch of small satellites.
    • The major technologies developed as part of SSLV are flexible nozzle control with electro-mechanical actuators for all stages, miniaturized avionics, and a velocity trimming module in the upper stage for precise satellite injection.

  • Russia’s Nauka Module for ISS

    Pirs, a Russian module on the International Space Station (ISS) used as a docking port for spacecraft and as a door for cosmonauts to go out on spacewalks. In its place, Russia’s space agency Roscosmos will be attaching a significantly larger module called Nauka.

    What does Russia’s new Nauka module do?

    • Nauka, which is 42 feet long and weighs 20 tonnes, was supposed to be launched as early as 2007, as per the ISS’s original plan.
    • Nauka — meaning “science” in Russian — is the biggest space laboratory Russia has launched to date, and will primarily serve as a research facility.
    • It is also bringing to the ISS another oxygen generator, a spare bed, another toilet, and a robotic cargo crane built by the European Space Agency (ESA).
    • The new module was sent into orbit using a Proton rocket — the most powerful in Russia’s space inventory — on July 21 and will take eight days to reach the ISS.

    What kind of research goes on at the International Space Station?

    • A space station is essentially a large spacecraft that remains in low-earth orbit for extended periods of time.
    • It is like a large laboratory in space and allows astronauts to come aboard and stay for weeks or months to carry out experiments in microgravity.
    • For over 20 years since its launch, humans have continuously lived and carried out scientific investigations on the $150 billion ISS under microgravity conditions, being able to make breakthroughs in research not possible on Earth.

    Back2Basics: International Space Station (ISS)

    • The International Space Station, which launched its first piece in 1998, is a large spacecraft that orbits around the Earth and is home to the astronauts.
    • The ISS is currently the only active space station in the earth’s orbit.
    • The first crew on the space station arrived on November 2, 2000.
    • The space station is home to a minimum of six astronauts, with two bathrooms, a gymnasium, and a big bay window.
    • It is a joint project between five participating space agencies -NASA (USA), Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada).