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Subject: Science and Technology

  • Fibonacci Spirals in Plants and Fossil Discoveries

    Observing Fibonacci spirals in plants reveals intriguing mathematical patterns in nature.

    Central Idea

    • Nature’s mathematical patterns: Observing Fibonacci spirals in plants reveals intriguing mathematical patterns in nature.
    • Fascination surrounding Fibonacci spirals: Scientists have been captivated by the prevalence of these spirals in various natural elements.
    • Aim of the study: Re-evaluating the ancient origins of Fibonacci spirals in plants through fossil analysis.

    What are Fibonacci Spirals?

    • In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones.
    • Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers.
    • A Fibonacci spiral approximates the golden spiral using quarter-circle arcs inscribed in squares derived from the Fibonacci sequence.

    Fibonacci Spirals in Nature: Exploring Patterns and Significance

    • Spirals occur frequently in nature: Found in plant leaves, animal shells, and DNA’s double helix.
    • Connection to the Fibonacci sequence: Spirals often adhere to the numerical Fibonacci sequence (1, 1, 2, 3, 5, 8, 13, 21, etc.).
    • Notable examples: Pinecones, leaves, and animal shells exhibit Fibonacci spirals.
    • Visible spirals in plants: By closely examining plants, clockwise and anticlockwise spirals can be observed.

    Widespread Presence of Fibonacci Spirals in Living Plants

    • Fibonacci spirals in pinecones: Extensive study of 6,000 pinecones revealed 97% exhibiting Fibonacci spirals.
    • Fibonacci spirals in other plant organs: Over 90% of 12,000 spirals analyzed in 650 plant species adhered to the Fibonacci sequence.
    • Investigation of Ancient Fossils: Non-Fibonacci Spirals Discovered
    • Study focus: Fossils of clubmoss species Asteroxylon mackiei.
    • Analysis techniques: Imaging and digital reconstruction employed to visualize and quantify spirals.
    • Surprising findings: Ancient fossil exhibited high variability, with non-Fibonacci spirals as the most common pattern.
    • Rarity of non-Fibonacci spirals in modern plants: Contradicts the prevailing assumption based on the scarcity of such patterns today.

    Implications for Understanding Fibonacci Spirals in Land Plants

    • Re-evaluating ancient origins: Discovery of non-Fibonacci spirals challenges the belief that all leafy plants originated with Fibonacci patterns.
    • Challenging universality: Indicates separate emergence of Fibonacci spirals during plant evolution.
    • Distinct evolutionary history: Clubmosses’ leaf evolution and Fibonacci spirals differed from other plant groups.
    • Multiple independent emergences: Suggests Fibonacci spirals emerged multiple times independently.

    Unanswered Questions and Debates

    • Significance of Fibonacci spirals in modern plants: Ongoing debate on their adaptive advantages.
    • Hypotheses: Functions of Fibonacci spirals include maximizing light exposure and efficient seed packing.
    • Insights from fossils and clubmosses: Valuable for unraveling the significance of Fibonacci spirals in plants.

    Conclusion

    • Revising understanding of Fibonacci spirals in plants: Ancient fossils challenge the assumption of universal presence.
    • Unique evolutionary history: Clubmosses demonstrate a distinct trajectory of Fibonacci spirals.
    • Role of fossils in uncovering answers: Further research may provide insights into the adaptive advantages and functions of Fibonacci spirals in plants.

  • Sun’s Magnetic Field and its Influence on Interplanetary Space

    sun magnet

    Central Idea

    • Scientists from the Indian Institute of Astrophysics (IIA) have conducted a study to better understand the relationship between the sun’s magnetic field and the interplanetary magnetic space.
    • It is said to play a crucial role in space weather.
    • The findings provide valuable insights into the Solar Mean Magnetic Field (SMMF) and its connection with the Interplanetary Magnetic Field (IMF).

    Sun’s Magnetic Field and Its Generation

    • The sun’s magnetic field is generated by electrical currents acting as a magnetic dynamo within the sun.
    • The corona, photosphere, and chromosphere of the sun contain the magnetic field, with the chromosphere being a near-transparent layer just above the photosphere.

    What is Solar Mean Magnetic Field (SMMF)?

    • The SMMF represents the mean value of the line-of-sight component of the solar vector magnetic field averaged over the visible hemisphere of the sun.
    • Understanding the SMMF’s effect on the IMF is crucial for better space weather forecasting and response.

    Investigating the SMMF at Chromospheric Heights

    • IIA scientists aimed to explore the relationship between the SMMF at chromospheric and photospheric heights.
    • Their analysis revealed a strong similarity between the two, with the chromospheric SMMF being lower than the photospheric SMMF.
    • This suggests that the primordial magnetic field inside the sun could be a source of the SMMF.

    Data and Methodology

    • The scientists utilized magnetic field measurements from the Synoptic Optical Long-term Investigations of the Sun (SOLIS)/Vector Spectromagnetograph (VSM) instrument from 2010 to 2017.
    • They cross-verified the data with measurements from the Wilcox Solar Observatory.

    Significance and Future Implications

    • Understanding the source and driving parameters of the SMMF contributes to a better understanding of how it influences the IMF.
    • This knowledge can aid in improved space weather prediction and response.

     

  • Endosymbiotic Relationships: Archaea, Mitochondria, and Plant Evolution

    endosymbioic

    Central Idea

    • Organisms on Earth are categorized into prokaryotes and eukaryotes, with distinct characteristics and evolutionary lineages.
    • Archaea, a subset of unicellular organisms, were discovered to have a different lineage than bacteria and are found in extreme environments.
    • Some archaea, known as the Asgard, exhibit similarities to eukaryotes, leading to insights into the origins of mitochondria and the evolution of complex life forms.

    This article explores the endosymbiotic relationships between archaea and bacteria, the origins of mitochondria, and the unique evolutionary paths taken by plants.

    Archaea and Unique Lineages

    • Prokaryotes and Eukaryotes: Organisms are broadly divided into prokaryotes (unicellular, lacking organelles and nucleus) and eukaryotes (contain organelles and nucleus, often complex and multicellular).
    • Archaea’s Distinct Lineage: Archaea differ from bacteria in cell wall composition and gene sequence and were initially found in extreme environments.
    • Asgard Archaea: Asgard archaea, named after Norse mythology, exhibit proteins resembling eukaryotic proteins and are found in unique ecosystems.

    Origins of Mitochondria and Chloroplasts

    • Endosymbiotic Theory: Mitochondria and chloroplasts, responsible for energy generation and photosynthesis, respectively, evolved from free-living bacteria through endosymbiosis.
    • Mitochondria’s Origin: Mitochondria evolved from a proteobacteria that was engulfed by an Asgard archaea, leading to the development of animals, fungi, and plants.
    • Plant Evolution: In plants, the Asgard-mitochondrial union was followed by the incorporation of a photosynthesizing cyanobacterium, which became the chloroplast.

    Complexity of such Relationships

    • Challenges of Symbiosis: Establishing a functional symbiotic relationship between independent life forms presents challenges.
    • Plant Approach: Plants made choices to optimize gene retention, favoring archaean genes for information technology processes and bacterial genes for operations and housekeeping tasks.
    • Gene Transfer to the Nucleus: Over time, many mitochondrial genes were transferred to the nucleus, creating a more efficient arrangement.

    Insights from Cellular Process Studies

    • Reconfiguring Cellular Processes: The research of Rajan Sankaranarayanan’s group at CCMB focuses on understanding the reconfiguration of cellular processes in endosymbiotic relationships.
    • Animal and Fungal Adaptations: Animals and fungi adapt by inducing changes in mitochondria to work around discrepancies in amino acid discrimination mechanisms.
    • Plant Evolution Complexity: Plants handle the complexity of three gene sets involved in their evolution by segregating policing machineries in the cytoplasm and mitochondria.

  • Cell-Cultivated Chicken gets US FDA Approval

    chicken

    Central Idea

    • Two US-based companies have received approval from the US Food and Drug Administration (FDA) to produce and sell cell-cultivated chicken, a type of lab-grown meat.
    • This development is seen as a significant step towards reducing carbon emissions associated with the food industry.

    Cell-Cultivated Chicken: How is it made?

    • Cell Isolation: The companies isolate cells from live animals that are likely to taste good and reproduce consistently.
    • Nutrient-Rich Mixture: The isolated cells are combined with a broth-like mixture containing essential nutrients, such as amino acids, fatty acids, sugars, salts, vitamins, and others required for cell growth.
    • Cultivation in Bioreactors: The cells are placed in bioreactors or cultivators, creating a controlled environment that supports cell growth.
    • Rapid Proliferation: Within two to three weeks, the cells multiply and form either large sheets (Upside Foods) or cell aggregates (Good Meat).
    • Processing and Shaping: The cellular materials are collected, processed, and shaped into various meat products such as cutlets, sausages, or other forms.

    Forms of Cell-Cultivated Meat

    • Focus on Chicken: Good Meat and Upside Foods initially concentrate on cell-cultivated chicken, given its global consumption demand.
    • Expansion Plans: These companies aim to extend their offerings to include other meats in the future. Research is underway for cell-cultivated versions of beef, sea bass, tuna, and shrimp.

    Motivations behind Cell-Cultivated Meat

    • Climate Mitigation: Cell-cultivated meat has the potential to reduce carbon emissions and land use associated with livestock production, addressing climate change concerns.
    • Animal Welfare: By eliminating traditional animal farming, it aims to prevent animal cruelty.
    • Food Security: Advocates view alternative meat as a means to meet nutritional demands worldwide.

    Challenges to Overcome

    • Consumer Acceptance: Ensuring that cell-cultivated meat matches the taste, texture, and appearance of traditional meat remains a challenge for widespread adoption.
    • Cost Factors: The cost of cell-cultivated meat is expected to remain high in the near future, with concerns regarding quality control at scale.
    • Resource Requirements: High-quality cells, suitable growth mediums, and other resources are necessary for successful cultivation.
    • Environmental Impact: Studies highlight uncertainties regarding the environmental impact of cell-cultivated meat production, particularly concerning the growth medium used.

  • Nearing the launch of Chandrayaan-3 Mission

    chandrayaan

    Central Idea

    • India’s upcoming moon exploration mission, Chandrayaan-3, is set to launch in mid-July.
    • In a significant decision, the Indian Space Research Organisation (ISRO) plans to retain the names of the lander and rover from the previous mission, Chandrayaan-2.

    Chandrayaan-3 Mission

    • Chandrayaan-3 is a follow-on mission to Chandrayaan-2 to demonstrate end-to-end capability in safe landing and roving on the lunar surface.
    • It consists of Lander and Rover configuration. It will be launched by LVM3 from SDSC SHAR, Sriharikota.
    • The propulsion module will carry the lander and rover configuration till 100 km lunar orbit.
    • The propulsion module has Spectro-polarimetry of Habitable Planet Earth (SHAPE) payload to study the spectral and Polari metric measurements of Earth from the lunar orbit.

    Retaining the Names: A Tribute to Chandrayaan-2

    • ISRO Chairman confirmed that the names Vikram and Pragyan will be carried over to the Chandrayaan-3 mission.
    • This decision pays homage to the 2019 Chandrayaan-2 lunar adventure while symbolizing India’s commitment to its space exploration legacy.

    Overcoming Past Challenges: Learning from Chandrayaan-2:

    • The Chandrayaan-2 mission faced setbacks when the lander-rover configuration, along with the payloads, was lost during a failed soft landing attempt.
    • Undeterred by the previous mission’s outcome, ISRO announced its plans for Chandrayaan-3, aiming for a successful lunar landing.

    Mission Details: Exploring the Moon’s Surface and Atmosphere

    • Chandrayaan-3 will be launched aboard the LVM3 rocket from Sriharikota using a propulsion module.
    • The lander-rover configuration will be transported to a 100-km lunar orbit by the propulsion module.
    • The Vikram lander module will deploy Pragyan, which will conduct in-situ chemical analysis of the lunar surface.

    [A] Scientific Payloads: Unravelling Lunar Mysteries

    1. Radio Anatomy of Moon Bound Hypersensitive Ionosphere and Atmosphere (RAMBHA): Studying the moon’s ionosphere and atmosphere.
    2. Chandra’s Surface Thermo physical Experiment (ChaSTE): Analyzing the thermal characteristics of the lunar surface.
    3. Instrument for Lunar Seismic Activity (ILSA): Investigating seismic activities on the moon.
    4. LASER Retroreflector Array (LRA): Enabling precise measurements of the lunar distance.

    [B] Rover Payloads

    1. Alpha Particle X-ray Spectrometer (APXS): Analyzing the elemental composition of the lunar surface.
    2. LASER Induced Breakdown Spectroscope (LIBS): Studying the elemental abundance and characteristics of lunar rocks.

    [C] Propulsion Module Payload:

    • Spectro-polarimetry of HAbitable Planet Earth (SHAPE): Collecting data related to Earth’s habitability.

    Conclusion

    • India’s Chandrayaan-3 mission signifies the nation’s determination to explore the moon further and overcome past challenges.
    • By retaining the names Vikram and Pragyan, ISRO honors its space program’s pioneers while embarking on a new lunar adventure.

     

  • India’s Decision to Sign the Artemis Accords

    Artemis

    Central Idea

    • India’s recent endorsement of the Artemis Accords reflects its commitment to space exploration best practices. While India’s adherence to the Outer Space Treaty and associated international regimes already emphasizes its commitment to similar principles, the significance of signing the Accords lies beyond mere compliance.

    What is Artemis Accord?

    • The Artemis Accords is a set of principles and guidelines for international cooperation in space exploration, led by NASA (National Aeronautics and Space Administration) of the United States.
    • The Accords were introduced in 2020 as part of NASA’s Artemis program, which aims to return humans to the Moon and establish a sustainable lunar presence.
    • The Accords establish a set of principles that signatory countries agree to adhere to when participating in space missions and activities.

    The principles of Artemis Accords

    • Peaceful Purposes: Commitment to the exploration and use of space for peaceful purposes and the avoidance of conflicts.
    • Transparency: Sharing information about space missions, plans, and policies to enhance international cooperation and coordination.
    • Interoperability: Promoting common technical standards and compatibility between space systems to facilitate collaboration and resource-sharing.
    • Emergency Assistance: Agreeing to provide mutual assistance and coordination in case of accidents, distress, or emergency situations in space.
    • Registration of Space Objects: Commitment to registering space objects launched into space and sharing information to ensure transparency and safety.
    • Protecting Heritage: Preservation of historically significant sites and artifacts on celestial bodies, such as the Apollo landing sites on the Moon.
    • Space Resources: Encouraging the utilization of space resources in a sustainable manner, while respecting international law and ensuring equitable access.
    • Deconfliction of Activities: Avoiding harmful interference and coordinating activities to ensure the safety and sustainability of space operations.

    Historical Challenges in India’s space exploration efforts and changing dynamics

    • Technology Denial: In the 1980s and 1990s, India faced challenges with technology denial, particularly from the United States. The US prevented the transfer of crucial space technologies to India, which hampered the country’s space program’s progress. Notably, Russia’s commitment to supply cryogenic technology was revoked under pressure from the US, resulting in significant delays in India’s space endeavors.
    • Dependence on Russia: Historically, Russia has been India’s most trusted partner in the space sector, akin to the defense sector. Russia has provided crucial support, cooperation, and resources for India’s space missions. Even recently, Russia offered facilities to train Indian astronauts for the Gaganyaan mission, highlighting the close relationship between the two countries in space exploration.
    • Shift towards the US-led Alliance: By signing the Artemis Accords, India has shown a significant shift in its alliance and cooperation dynamics. The Accords align India with a US-led alliance on space matters, focusing on promoting best practices and collaboration in space exploration. This move suggests India’s willingness to work closely with the United States and other member nations of the alliance.
    • Exclusion of Russia and China: The US-led alliance, as it currently stands, excludes two important spacefaring nations, Russia and China. India’s decision to join the alliance indicates a departure from its traditional reliance on Russia and a tilt towards closer cooperation with the US.

    The Significance of India’s decision to sign the Artemis Accords

    • Enhanced Collaboration: By joining the Artemis Accords, India opens up opportunities for enhanced collaboration with other signatory nations. This collaboration can involve sharing of data, technology, and resources, which can accelerate India’s space program and enable the country to benefit from the expertise and advancements of other spacefaring nations.
    • Access to Advanced Technologies: Being part of the US-led alliance provides India with access to advanced space technologies and capabilities. This can significantly contribute to India’s efforts in areas such as human missions, moon landings, planetary explorations, and the establishment of a space station.
    • Global Leadership and Visibility: India’s participation in the Artemis Accords and collaboration with leading spacefaring nations raises its profile and establishes it as a significant player in the global space arena. It offers India the opportunity to contribute to and shape the future of space exploration, garner international recognition, and potentially attract investment and partnerships.
    • Strategic Diplomacy: Joining the US-led alliance may require India to navigate delicate diplomatic relationships, particularly with Russia. India will need to strike a careful balance between collaborating with the US-led alliance and maintaining its strong historical ties with Russia in the space sector.
    • Technological Advancements: Collaborating with other nations in the Artemis Accords can enable India to leapfrog and benefit from technological advancements achieved by countries like the US, Russia, and China. This can help India acquire new expertise, build confidence, and accelerate its own space program.
    • Strengthening National Space Capabilities: By participating in the alliance, India can strengthen its national space capabilities by leveraging the expertise and resources of other nations. This can lead to the development of indigenous technologies, the expansion of scientific and technological expertise, and the growth of the domestic space industry, ultimately positioning India as a leader in space exploration.

    Artemis

    Concerns associated with this development

    • Exclusion of Key Players: The US-led alliance, as it stands, excludes major spacefaring nations like Russia and China. This exclusion raises concerns about potential fragmentation in international space cooperation and the potential for geopolitical tensions. It may also limit opportunities for collaboration and hinder the global sharing of resources and expertise.
    • Overreliance on External Technologies: Joining the alliance and seeking collaboration with other nations could potentially lead to overreliance on external technologies. While collaboration offers benefits, there is a risk of dependence on the advancements and resources of other countries, which could limit India’s ability to independently develop and sustain its own space technologies and capabilities.
    • Impact on Existing Partnerships: Joining the US-led alliance may strain India’s existing partnerships, particularly with Russia. Russia has been a trusted partner for India in the space sector, and any perception of favoring US interests over existing partnerships could potentially impact the cooperation and mutual trust built over the years.
    • Potential Loss of Autonomy: As India aligns with the US-led alliance, there is a concern about the potential loss of autonomy and decision-making power in shaping its own space program. Balancing collaboration with maintaining independence and pursuing national objectives becomes crucial to ensure that India’s space exploration plans are not dictated solely by the priorities of the alliance.
    • Unequal Benefits and Power Dynamics: There is a risk that within the alliance, power dynamics and benefits might be unevenly distributed, potentially disadvantaging smaller or less developed spacefaring nations. Ensuring equitable participation, resource sharing, and decision-making processes will be crucial to address these concerns and ensure a fair and inclusive alliance.
    • Impact on Domestic Development Priorities: Collaborating with the alliance may divert resources and attention away from other pressing domestic development priorities. It is essential for India to strike a balance between its space exploration ambitions and addressing other critical needs such as poverty alleviation, healthcare, education, and infrastructure development.

    Way forward

    • Strengthening Collaboration: India should actively engage with other member nations of the alliance and seek opportunities for collaboration in space exploration. This includes joint missions, research projects, and technological exchanges.
    • Balancing Independence and Collaboration: While collaboration is important, India should also continue pursuing its independent space goals. The country should strive to strike a balance between leveraging the expertise of other nations and maintaining its own capabilities and autonomy in space exploration.
    • Investment in Research and Development: India should prioritize investments in research and development (R&D) to bolster its space capabilities. This includes funding initiatives for advanced technologies, scientific research, and innovation. By nurturing a robust R&D ecosystem, India can push the boundaries of space exploration, develop indigenous technologies, and establish itself as a hub for cutting-edge space research.
    • Skill Development and Education: To support its ambitious space plans, India should focus on skill development and education in the field of space science and technology. This involves strengthening educational institutions, creating specialized programs, and promoting scientific curiosity among students.
    • International Diplomacy and Cooperation: India should proactively engage in diplomatic efforts to ensure smooth collaboration with other nations, including Russia. By fostering trust, open communication, and mutual respect, India can navigate sensitive diplomatic relationships and maximize the benefits of its participation in the alliance
    • Public Engagement and Awareness: It is crucial for India to engage the public and raise awareness about its space program, achievements, and contributions. By fostering public support and interest in space exploration, India can create a favorable environment for continued investments and collaborations.

    Artemis

    Conclusion

    • India’s signing of the Artemis Accords signifies its commitment to advancing space exploration by collaborating with international partners. As India treads this new path, it must navigate its relationships with existing partners like Russia and strike a balance that allows for cooperation while pursuing its own independent space goals. By doing so, India can position itself as a key player in the global space arena and propel its space program to new heights

    Also read:

    Adopting Sustainable Space Technology

     

  • Titanic Submersible Expedition

    titanic

    Central Idea: All five crew onboard the Titan submersible are dead after a catastrophic implosion.

    What is Submersible?

    • Submersibles are vessels designed for underwater travel, often used for research, exploration, and tourism purposes.
    • They are white tubes of about 6.7 meters long and 2.8 meters wide, and have a top speed of three knots or 5.5 kilometers (3.5 miles) an hour.
    • In the context of tourism, submersibles provide passengers with the opportunity to experience the wonders of the underwater world and explore marine ecosystems.
    • Submersible tourism has gained popularity among adventurous travellers, offering unique opportunities to explore the underwater world.

    Submersible Tourism and the Titanic Site 

    • The wreckage of the RMS Titanic, discovered in 1985, has been a popular destination for tourists over the years.
    • OceanGate Expeditions began offering Titanic expeditions, taking crews of “citizen scientists” and “crew members” to the site since 2010.

    About Titan Submersible 

    • The Titan submersible was constructed using titanium and filament-wound carbon fiber.
    • With a length of 22 feet and a weight of 10,432 kg, it was capable of reaching depths of 4,000 meters (13,123 feet).

    Functionality and Equipment

    • The submersible employed 4 electric thrusters for movement and maneuverability.
    • Equipped with an array of cameras, lights, and scanners, the Titan facilitated deep-sea exploration and surveying.
    • Communication in deep waters was achieved using sound waves (sonar) since radio waves do not transmit effectively.

    Differentiating Submersibles and Submarines  

    • Submersibles, such as the Titan, are not fully autonomous and require support ships for launch and recovery.
    • They descend using weights and do not possess the power to launch independently.
    • Submarines, on the other hand, are self-propelled and capable of launching and returning without external support.

    Depth and Cost

    • The maximum depth for the OceanGate Titanic expedition is around 12,800 feet, with the wreck located at 12,500 feet.
    • The cost of touring the Titanic varies, with the OceanGate expedition priced at $250,000 per person.

    Safety Considerations in Submersible Tourism 

    • The submersible tourism industry adheres to international safety standards and has maintained a safety record without incident for 50 years, according to the Marine Technology Society (MTS).
    • Submersible tour companies conduct detailed risk assessments for each experience, ensuring clients are aware of the potential risks involved.
    • Clients often undergo risk assessments and sign waivers before embarking on submersible journeys.

  • What are Lab-Grown Diamonds (LGDs)?

    lab grown diamond ldg

    Central Idea

    • During PM Modi’s state visit to the US, he presented First Lady Jill Biden with a 7.5-carat lab-grown diamond as a gift.
    • Lab-grown diamonds, also known as LGDs, have gained popularity in recent years due to their ethical and environmental advantages over mined diamonds.
    The diamond, a gift for First Lady Jill Biden, was gifted in a papier mache box. “Known as kar-e-kalamdani, Kashmir’s exquisite papier mache involves sakthsazi or meticulous preparation of paper pulp and naqqashi, where skilled artisans paint elaborate designs,” a statement from the MEA said.

    What is Lab-Grown Diamond (LGD)?

    • Lab-grown diamonds are diamonds created using technology that simulates the natural geological processes of diamond formation.
    • Unlike diamond simulants, such as Moissanite or Cubic Zirconia, LGDs possess the same chemical, physical, and optical properties as natural diamonds.

    Ethical and Environmental Advantages

    • LGDs are considered socially and environmentally responsible alternatives to mined diamonds.
    • Their production avoids the socially exploitative aspects of diamond mining and reduces the environmental impact associated with traditional mining practices.

    Characteristics of gifted diamond

    • Carat Weight: The diamond weighs 7.5 carats. Carat weight refers to the size and weight of the diamond, with one carat equal to 200 milligrams.
    • Origin: The diamond is created in a laboratory using advanced technology and does not come from natural diamond mining.
    • Certification: The diamond has been certified by the Gemological Lab, IGI (International Gemological Institute). Certification ensures that the diamond meets industry standards for quality and authenticity.
    • Cutting and Polishing: The diamond is expertly cut and polished to enhance its brilliance and visual appeal. The precise craftsmanship and attention to detail result in a well-cut and faceted diamond.

    Methods of LGD Production

    (A) High Pressure, High Temperature (HPHT) Method:

    • This common method involves subjecting a diamond seed, typically made of graphite, to extreme pressures and temperatures to transform it into a diamond.
    • HPHT requires heavy presses capable of generating immense pressure (up to 730,000 psi) and temperatures exceeding 1500 degrees Celsius.

    (B) Chemical Vapor Deposition (CVD) and Explosive Formation:

    • CVD involves the deposition of carbon atoms onto a diamond seed using a gas mixture, resulting in the growth of a diamond layer.
    • Explosive formation, known as detonation nano-diamonds, utilizes explosive reactions to create tiny diamond particles.

    Properties and Applications of LGDs

    • Optical Properties and Durability: LGDs possess similar optical dispersion to natural diamonds, giving them the characteristic sparkle. Their durability makes them suitable for industrial applications, such as cutters and tools.
    • Enhanced Properties and Industrial Uses: LGDs can have their properties enhanced for specific purposes, such as high thermal conductivity and negligible electrical conductivity. These properties make LGDs valuable for electronics, acting as heat spreaders for high-power laser diodes and transistors.

    Impact on the Diamond Industry

    (A) Sustainable Growth in the Jewellery Industry

    • As natural diamond reserves decline, LGDs are gradually replacing mined diamonds in the jewelry sector.
    • The production processes for LGDs, including cutting and polishing, align with established practices in the diamond industry.

    (B) India’s Diamond Industry

    • The rise of LGDs is unlikely to significantly impact India’s diamond industry, which specializes in polishing and cutting diamonds.
    • India’s established diamond industry can continue to thrive while incorporating LGDs as part of its offerings.

    Commercial LGD Production in India: InCent-LGD

    • In the Union Budget 23-24, a 5-year research grant was announced for an Indian Institute of Technology (IIT) with the aim of encouraging the development of LGD machinery, seeds, and recipes.
    • It would establish the India Centre for Lab Grown Diamond (InCent-LGD) at IIT Madras.
    • The primary aim of InCent-LGD is to provide technical assistance to domestic industries and entrepreneurs, fostering indigenous manufacturing of Chemical Vapour Deposition (CVD) and High Pressure and High Temperature (HPHT) systems.
    • The project seeks to expand the Lab-Grown Diamond (LGD) business by offering affordable technology to start-ups, creating employment opportunities, and boosting LGD exports.

    Economic significance of LGDs

    • The Gems and Jewellery sector contributes approximately 9% to India’s total merchandise exports and plays a crucial role in the economy.
    • LGD have emerged as a notable technological development in the industry, finding applications not only in jewellery but also in sectors like computer chips, satellites, 5G networks, defense, optics, and thermal & medical industries.
    • The global LGD diamond market, valued at $1 billion in 2020, is expected to grow rapidly, reaching $5 billion by 2025 and surpassing $15 billion by 2035.

  • In news: Hematopoietic Stem Cell Transplantations (HSCT)

    stem cell

    Central Idea: A celebrity couple publicly announced that they had chosen to preserve her baby’s cord blood just a few days before her baby girl was born.

    What is Hematopoietic Stem Cell Transplantation (HSCT)?

    • What is it? : HSCT is a medical procedure used to treat various disorders affecting the blood, immune system, and metabolism.
    • Source of Hematopoietic Stem Cells: Hematopoietic stem cells, which have the ability to develop into different blood cell types, can be obtained from sources such as bone marrow, peripheral blood, or umbilical cord blood.
    • Autologous, Allogeneic, and Haploidentical Transplantation: HSCT can involve the use of the patient’s own stored cord blood (autologous), stem cells from a compatible donor (allogeneic), or partially matched stem cells from a family member (haploidentical).
    • Procedure Steps: HSCT involves the destruction or suppression of the patient’s abnormal or deficient hematopoietic cells, followed by the infusion of healthy stem cells.
    • Commonly Treated Conditions: HSCT is commonly used to treat conditions such as leukemia, lymphoma, aplastic anemia, inherited immune system disorders, and metabolic disorders.

  • What is MATSYA-6000?

    matsya

    Central idea

    • Hope Dwindling for Titan Submersible: The Titan submersible lost all crew in an underwater implosion.
    • Indigenous Indian Submersible: Indian scientists are preparing to undertake a similar dive in an indigenous vehicle called Matsya-6000.

    What is Samudrayaan Mission?

    • Samudrayaan is a mega mission related to the ocean/sea-launched in October 2021.
    • It is aimed to develop “a self-propelled manned submersible to carry three human beings to a water depth of 6,000 meters in the ocean with a suite of scientific sensors and tools for deep ocean exploration.
    • It seeks to carry out deep ocean exploration of non-living resources such as polymetallic manganese nodules, gas hydrates, hydro-thermal sulfides, and cobalt crusts, located at a depth between 1000 and 5500 meters.

    About MATSYA 6000

    • Developed indigenously, MATSYA 6000 is a manned submersible vehicle.
    • It will facilitate the Ministry of Earth Sciences (MoES) in conducting deep ocean exploration.
    • It has an endurance of 12 hours of operational period and 96 hours in case of emergency, according to the ANI news agency.
    • The manned submersible will allow scientific personnel to observe and understand unexplored deep-sea areas by direct intervention.

    Design specifications

    • Titanium Enclosure: Matsya-6000 features a titanium casing on the front and back, chosen over carbon fiber for enhanced safety.
    • Syntactic Foam: The submersible is equipped with syntactic foam, a flotation device that helps determine its location even if it cannot resurface.

    Need for such a mission

    • Huge coastline: India has a unique maritime position, a 7517 km long coastline, which is home to nine coastal states and 1,382 islands.
    • Blue Economy: The mission aims to boost the Central government’s vision of ‘New India’ that highlights the Blue Economy as one of the ten core dimensions of growth.
    • Coastal Economy: For India, with its three sides surrounded by the oceans and around 30% of the nation’s population living in coastal areas and coastal regions play a major economic factor. It supports fisheries and aquaculture, tourism, livelihoods, and blue trade.

    Lessons learned from Titan Submersible

    • Precautions in Place: The Indian scientists working on Matsya-6000 assure multiple back-up safety measures for the crew.
    • Safety System Reviews: There may be reviews of the employed safety systems in light of the Titan submersible incident.
    • Test Dives and Depth Limit: Prior to the main dives, NIOT divers will undertake test dives up to 500 meters inside a steel submersible.
    • Titanium vs. Steel: Titanium, being stronger yet lighter than steel, is preferred for resurfacing ease and balancing extreme ocean depths.
    • Spherical Hull Perfection: The submersible’s hull must be perfectly spherical to evenly distribute extreme pressure at ocean depths.

    Impact on Safety Measures

    • Reviewing Safety Measures: The incident involving the Titan submersible prompts a reevaluation and rechecking of safety measures for the Matsya-6000 mission.
    • Incorporating Lessons Learned: The accident serves as a learning opportunity to enhance the safety and reliability of the upcoming Indian mission.