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  • In news: Guru Nanak Jayanti

    guru nanak

    Central Idea

    • Guru Nanak Jayanti commemorates the birth of Guru Nanak, the founder of Sikhism and the first of its ten Gurus.
    • It is celebrated worldwide as Guru Nanak Gurpurab on Kartik Poornima, the full-moon day in the month of Katak (Octoberā€“November).

    Five Key Aspects of Guru Nanak’s Life

    [1] Early Life and Philosophical Inclination:

    • Born on April 15, 1469, in a Hindu family in Nankana Sahib (now in Pakistan).
    • Displayed an early interest in philosophical and spiritual questions.
    • Worked as an accountant before embarking on a spiritual journey with a Muslim minstrel, Mardana.

    [2] Mystical Experience at Age 30:

    • Had a transformative spiritual experience during an early morning ablution by a river.
    • Received a divine mission to spread a message of unity and devotion.
    • Emerged after three days with the profound declaration, ā€œThere is no Hindu, there is no Mussalman.ā€

    [3] Extensive Travels and Interfaith Dialogue:

    • Traveled widely, including to Sri Lanka, Baghdad, and Mecca, on journeys called ā€˜udaasisā€™.
    • Engaged with various religious figures, including Hindu pandits and Sufi saints.
    • Advocated for the oneness of God and universal brotherhood.

    [4] Preaching the Oneness of God:

    • Emphasized the unity of humanity and the presence of one God in all.
    • Challenged religious orthodoxy and rituals, promoting a direct connection with the divine.
    • His teachings laid the foundation for Sikhism, attracting followers from diverse backgrounds.
    • His teachings and hymns are compiled in the Guru Granth Sahib, the holy scripture of Sikhism.
    • He wrote in Punjabi, using a script known as Gurmukhi.

    [5] Succession and Legacy:

    • Spent his final years in Kartarpur, establishing a community with daily prayers and hymns.
    • Introduced the practice of ā€˜langarā€™, a communal kitchen serving free meals.
    • Chose Lehna (later Guru Angad) as his successor, bypassing his own sons.
    • Passed away on September 22, 1539, leaving behind a legacy of spiritual and social reform.

  • Rythu Bandhu Scheme suspended ahead of Elections

    Central Idea

    Rythu Bandhu Scheme: Key Facts

    • The Rythu Bandhu scheme is also known as Farmer’s Investment Support Scheme (FISS).
    • It is a welfare programme for farmers started in 2018 by the Telangana government.
    • Under the scheme, the state government provided the 58 lakh farmers in Telangana with ā‚¹5,000 per acre of their land as a farm investment for two crops.
    • There is no ceiling on the number of acres held by a farmer.
    • So, a farmer who owns two acres of land would receive Rs 20,000 a year, whereas a farmer who owns 10 acres would receive Rs 1 lakh a year from the government.
    • This investment is made twice a year, once for kharif harvest and once for Rabi harvest.
    • It is the country’s first direct farmer investment support scheme where cash is paid directly to the beneficiary.

    Reasons for suspension

    • The election commission had allowed the disbursement of funds for the rabi harvest this season, provided they are not publicised, in accordance with the model code of conduct.
    • However, the model code was violated after the state finance minister made a public announcement of the same.

  • Evolution and Future of Fiber Optic Technology

    Fiber Optic

    Central Idea

    • COVID-19 pandemic highlighted the crucial role of the internet in maintaining global connectivity, facilitated largely by high-speed internet connections.
    • These connections, enabling video chats, online payments, and virtual meetings, largely depend on the technology of optical fibers.

    Understanding Optical Fibers

    • Composition and Size: Optical fibers are thin strands of glass, almost as thin as a human hair, used for transmitting information.
    • Information Transmission: They carry various forms of data, including text, images, and videos, at speeds close to that of light.
    • Everyday Relevance: Optical fibers play a vital role in everyday communications like text messaging and phone calls.
    • Fragility vs. Strength: Despite their thinness, these fibers are strong and durable when encased in protective materials.
    • Versatility: They are flexible enough to be laid underground, underwater, or wound around spools.

    Historical Perspective

    • Charles Kao’s Contribution: About 60 years ago, physicist Charles Kao proposed using glass fibers for telecommunications, a suggestion that earned him a Nobel Prize in 2009.
    • Replacing Copper Wires: Kao’s idea was initially met with skepticism but eventually replaced copper wires in telecommunication.

    How Optical Fibers Work?

    • Light as an Electromagnetic Wave: Light, part of the electromagnetic spectrum, can be controlled and guided through optical fibers.
    • Total Internal Reflection: This phenomenon allows light to travel long distances within the fiber with minimal loss of power.
    • Fiber Optic Communication System: This system includes a transmitter, the optical fiber, and a receiver to encode, carry, and reproduce information.

    Data Transmission and Resistance

    • High Data-Transmission Rate: Optical fibers can transmit data at rates of several terabits per second.
    • Insensitivity to External Disturbances: Unlike copper cables, they are not affected by external factors like lightning or bad weather.

    Development of Fiber Optic Cables

    • Early Experiments: The concept of guiding light in transparent media dates back to the 19th century, with demonstrations by Jean-Daniel Colladon and others.
    • Medical and Defense Applications: Early glass objects were used in medicine and defense before their adaptation for data transmission.
    • Advancements in the 20th Century: Significant progress occurred in the 1950s and 1960s, including the development of glass-clad fibers and the invention of lasers.

    Modern Manufacturing

    • Fiber-Optic Cable Production: Today, glass fibers are produced using the fiber-drawing technique, ensuring high purity and engineered refractive index profiles.
    • Loss Reduction: Modern optical fibers have significantly reduced signal loss, less than 0.2 dB/km.

    Future of Fiber Optics

    • Expanding Applications: Fiber optics technology is now integral to various fields, including telecommunication, medical science, and laser technology.
    • India’s National Mission: The Indian government’s 2020 Union Budget announced a significant investment in quantum technologies and applications, highlighting the future potential of fiber optics.
    • Quantum Optics and Communication: The technology stands at the forefront of a new era, with expanding possibilities in quantum optics and home connectivity.

    Conclusion

    • Impact of Fiber Optics: The evolution of fiber optics has revolutionized communication and connectivity, offering high-speed, reliable data transmission.
    • Continued Growth and Innovation: As the technology continues to advance, its applications are likely to expand further, driving innovations in various sectors and enhancing global connectivity.

  • Dollarization and Economic Policy: The Case of Javier Mileiā€™s Argentina

    Central Idea

    • Argentina faces over 100% inflation and widespread poverty, prompting public support for Milei’s unique economic policies.
    • This has prompted the newly elected Javier Milei replacing the peso with the dollar, abolishing the Central Bank, and cutting government spending.

    Concept of Dollarization

    • Dollarization is the process by which a country adopts a foreign currency in addition to or instead of its national currency.
    • Here are 2 types of dollarization:
    1. Full Dollarization: This occurs when a country adopts a foreign currency (such as the US dollar) as its sole legal tender. In this scenario, the foreign currency completely replaces the domestic currency for all financial transactions.
    2. Partial Dollarization: In this case, the foreign currency is used alongside the national currency. It often happens unofficially, where residents hold a significant portion of their assets or conduct a large number of their transactions in the foreign currency.

    Motive behind Argentine move

    • Hyperinflation Solution: Dollarization could break the cycle of rising prices and money supply, as the dollar is not easily manipulated for political gains.
    • Growth Potential: By using dollars, economies might focus on exports and attract foreign investment, benefiting from the dollar’s stability.

    Potential Challenges

    • Loss of Monetary Policy Control: Adopting the dollar means losing the ability to control the money supply through domestic monetary policy.
    • Dependence on Export Promotion: Economies must rely solely on export promotion for economic stability, as currency depreciation is no longer an option.

    Ecuador’s Experience Ā 

    • Economic Turnaround: Ecuador, after adopting the dollar, saw significant improvements in GDP growth, poverty reduction, and inflation control.
    • Oil and Gas Reserves: Ecuador’s success was partly due to its natural resources, which helped maintain a steady dollar inflow.
    • Beyond Dollarization: Ecuador’s economic prosperity was also due to effective fiscal policies and government interventions in the oil sector.
    • Social Spending: Increased social spending played a crucial role in translating economic gains into societal benefits.

    Comparative Analysis: Greece and the Euro

    • Euro Adoption in Greece: Greece’s adoption of the euro initially spurred growth but later limited its fiscal and monetary policy options.
    • Austerity Measures: The Eurozone crisis forced Greece into austerity, highlighting the risks of adopting an external currency without policy autonomy.

    Conclusion

    • Not a Panacea: Dollarization, while potentially stabilizing, is not a standalone solution and requires complementary domestic policies.
    • Argentina’s Uncertain Future: With Milei’s intent to slash government spending and abolish the Central Bank, Argentina’s economic future under his administration remains uncertain.

  • James Webb Space Telescope finds ā€˜Teenageā€™ Galaxies

    james webb space telescope

    Central Idea

    • Recently, the James Webb Space Telescope has provided detailed insights into slightly older galaxies, known as ‘teenagers’ in galactic terms, shedding light on their evolution and unique characteristics.
    • This research is part of the CECILIA Survey, utilizing Webb to analyze the chemistry of distant galaxies, named after astronomer Cecilia Payne-Gaposchkin.

    Study of Teenage Galaxies

    • Formation Period: The study focuses on galaxies that formed around 2-3 billion years after the Big Bang, which occurred about 13.8 billion years ago.
    • Research Methodology: Researchers analyzed light across various wavelengths from 23 such galaxies using Webb, akin to studying their ‘chemical DNA.’
    • Key Discoveries: These teenage galaxies exhibit distinct chemical compositions, indicative of intense star formation and rapid developmental phases.

    Characteristics of Teenage Galaxies

    • Contrast with Modern Galaxies: These galaxies show significant differences in appearance and behavior compared to contemporary galaxies.
    • Developmental Mysteries: They undergo crucial, yet not fully understood, processes during this phase, shaping their final structure and nature.
    • High Temperatures in Star-Forming Regions: Star-forming areas in these galaxies show temperatures around 24,000 degrees Fahrenheit, much higher than in present-day galaxies.
    • Young Stars and Gas Properties: This temperature variation suggests differences in the stars and gas properties of teenage galaxies.
    • Detected Elements: Observations identified these galaxies glowing with elements like hydrogen, helium, oxygen, nitrogen, sulfur, argon, nickel, and silicon.

    Significance of Oxygen and Nickel

    • Oxygen’s Crucial Role: As a key component of galactic DNA and the third-most abundant element in the universe, oxygen is vital for tracking galaxies’ growth history.
    • Nickel – An Unexpected Find: The presence of nickel, usually not bright enough to be observed in nearby galaxies, suggests unique aspects of massive stars in these galaxies.
    • Undetected Elements: Astronomers believe that additional elements likely exist in these galaxies but remain undetected due to current technological limits.

    Implications of the Findings

    • Chemical Immaturity and Rapid Growth: The study indicates that these galaxies are in a phase of rapid formation and are still chemically immature.
    • Insights into Star Formation: Understanding the chemical makeup of these galaxies provides valuable information about their star formation history and rate.

  • Embryonic Development: Unraveling the Mysteries of HERVH and ‘Jumping Genes’

    Central Idea

    • Recent breakthroughs in genetic research have shed light on the complexities of early embryonic development, particularly focusing on the inner cell mass, a key component in forming the human body.

    Embryonic Development Explained

    • Life’s Commencement: Life begins with the fusion of sperm and egg, creating a zygote, the first cell of a new individual.
    • Cellular Multiplication: The zygote undergoes rapid cell division, marking the onset of embryonic development.
    • Diverse Cell Differentiation: As the embryo develops, cells differentiate into various types, leading to the formation of organs and tissues.
    • Journey to Birth: This intricate process culminates in the birth of a newborn after nine months of gestation.

    Early Stages of Development

    • Inner Cell Mass Formation: Early embryonic cells cluster around the inner cell mass, vital for the embryo’s development.
    • Pluripotency of Cells: These cells are pluripotent, meaning they can develop into any cell type in the body.
    • Scientific Focus: The inner cell mass is a primary subject of study due to its critical role in human development.

    Gene Expression in Embryonic Cells

    • Analyzing Gene Activity: Researchers study the proteins produced by genes to understand cell-specific gene expression.
    • Deciphering Cell Development: This research provides insights into the active genes in each cell, revealing the mechanisms of cell development.

    Discoveries in the Inner Cell Mass

    • 2016 Research Insights: Manvendra Singh’s reanalysis of gene expression data identified a new group of non-committed cells in the inner cell mass.
    • Enigma of Cell Death: These cells, unlike others, do not progress to later developmental stages and are eliminated early on.

    HERVH Gene and Cell Survival

    • HERVH’s Crucial Function: A 2014 study revealed that HERVH, a gene with virus-like properties, is essential for maintaining pluripotency in embryonic stem cells.
    • Gene Expression Variations: Singh’s research showed that while most inner cell mass cells express HERVH, the non-committed cells that eventually die do not.
    • Independent Confirmation: This discovery was corroborated by researchers at the University of Spain in lab-fertilized embryos.

    Understanding ‘Jumping Genes’

    • Transposons in Non-Committed Cells: The non-committed cells express transposons, or ‘jumping genes’, which can cause DNA damage and lead to cell death.
    • HERVH’s Protective Role: HERVH protects most cells from the harmful effects of transposons, but cells lacking HERVH expression are vulnerable.
    • Natural Selection in Embryos: The early human embryo acts as a selection ground, favoring cells with HERVH expression.
    • HERVH’s Unique Nature: Interestingly, HERVH itself is a transposon but functions protectively rather than destructively.

    Implications for Placenta and Beyond

    • Placental Development: Cells that form the placenta also exhibit transposon activity but manage to survive without HERVH expression.
    • Impact on Regenerative Medicine: Understanding HERVH’s role in cell pluripotency has profound implications for regenerative medicine and could influence embryo viability in fertility treatments.Top of Form

  • [pib] AAINA Dashboard for Cities

    Central Idea

    • The Ministry of Housing and Urban Affairs (MoHUA) has introduced the ‘AAINA Dashboard for Cities’ portal (aaina.gov.in).

    About AAINA Dashboard

    • The AAINA Dashboard is envisioned as a permanent platform for ULB-related data, with regular updates.
    • It invites Urban Local Bodies (ULBs) across India to voluntarily share their key data regularly through a user-friendly data entry form on the portal.
    • The primary objectives of the AAINA Dashboard are:
    1. City Benchmarking: Enable cities to assess their performance relative to other cities.
    2. Inspiration: Inspire cities by identifying areas for improvement and showcasing possibilities.
    3. Peer Learning: Promote peer learning and engagement among cities.

    Dashboard Structure

    The AAINA Dashboard will categorize data submitted by ULBs into five key pillars:

    1. Political & Administrative Structure
    2. Finance
    3. Planning
    4. Citizen-Centric Governance
    5. Delivery of Basic Services

    Data Submission Process

    • ULBs will contribute their data, including audited accounts and self-reported performance metrics, by logging into the dashboard’s portal.
    • ULBs will have the flexibility to update their information as needed, ensuring that the dashboard remains a dynamic and up-to-date resource.https://pib.gov.in/PressReleaseIframePage.aspx?PRID=1976720

  • Plant Eavesdropping: Role of Green Leaf Volatiles (GLVs)

    Plant Eavesdropping

    Central Idea

    • The scent of freshly cut grass, more than just a pleasant aroma, is a part of a complex plant communication system involving Green Leaf Volatiles (GLVs).
    • For plants, these GLVs are not just fragrances but crucial signals that alert them to imminent threats, such as herbivore attacks.

    Concept of Plant Eavesdropping

    • Inter-Plant Communication: Plants have the remarkable ability to ‘eavesdrop’ on the distress signals of their neighbors, preparing themselves for similar threats.
    • Agricultural Implications: Understanding this natural warning system could revolutionize pest control in agriculture, potentially reducing the need for harmful pesticides.

    Understanding Plant Defense Mechanisms

    • Research involving mustard plants (Arabidopsis thaliana) has shown that calcium plays a crucial role in plant defense, with calcium levels spiking in response to damage.
    • Using genetically modified plants that fluoresce in response to calcium surges, researchers have been able to visually track plant reactions to physical damage and GLV exposure.
    • Experiments have demonstrated that plants can detect and respond to GLVs emitted by neighboring plants, as evidenced by fluorescence in modified mustard plants.
    • Among the GLVs, specific compounds like E-2-HAL and Z-3-HAL were found to trigger significant responses in plants.

    Gene-Level Defense Response

    • Activation of Defense Genes: Exposure to GLVs leads to the activation of certain defence-related genes in plants, suggesting that they perceive these volatiles as danger signals.
    • Implications for Plant Protection: This gene activation could be a crucial step in natural plant defense mechanisms against herbivores.

    Implications and Future Directions

    • Natural Pest Control: The study opens up possibilities for using GLVs in agricultural pest control, potentially reducing reliance on chemical pesticides.
    • Alternative Strategies: While promising, researchers also consider other substances like jasmonic acid, balancing pest control with the plant’s growth and fruit production.
    • Expanding Plant Sensory Research: The findings encourage further exploration into plant perception and response to external stimuli, particularly in natural environments where signaling dynamics are more complex.
    • Challenges in Field Studies: One of the main challenges in studying plant volatile signaling in natural settings is the dilution of these compounds in the open air.

  • Amplifi 2.0 Portal for Data-Driven Urban Policymaking Ā 

    Central Idea

    • The Union Ministry of Housing and Urban Affairs in India has taken a significant step towards fostering data-driven policymaking by launching the Amplifi 2.0 portal.

    Amplifi 2.0 Portal

    • Amplifi 2.0 stands for Assessment and Monitoring Platform for Liveable, Inclusive, and Future-Ready Urban India portal.
    • It was introduced by the Ministry of Housing and Urban Affairs.
    • This platform aims to provide easy access to raw data from Indian cities, facilitating researchers, academics, and stakeholders in their efforts to formulate informed urban policies.
    • Currently, 258 urban local bodies have been onboarded, and data for 150 cities is accessible on the platform.
    • Objectives:
    1. To make data from all 3,739 municipal corporations accessible through the portal.
    2. Offer a wide range of data, including total consumption, water quality testing, healthcare expenditure, slum population statistics, and road accident fatalities.

    Significance

    • Previously, the Ministry used data provided by civic bodies to rank cities based on four indices.
    • These indices encompassed ease-of-living, municipal performance, climate smart cities assessment, and data maturity assessment.
    • The government plans to release various reports based on subsets of these four indices, shifting towards a more data-centric approach.

  • In news: All Indian Forward Bloc (AIFB)

    Forward Bloc

    Central Idea

    • A veteran leaderā€™s centenary who was associated with Netaji Boseā€™s All Indian Forward Bloc (AIFB), was celebrated.

    All Indian Forward Bloc (AIFB)

    Details
    Foundation May 3, 1939 by Netaji Subhas Chandra Bose at Makur near Unnao (Uttar Pradesh)
    Original Purpose To consolidate left-wing elements within the Indian National Congress and develop an alternative leadership
    Key Early Members S.S. Kavishar (Vice-President), Lal Shankarlal (General Secretary), Vishwambhar Dayalu Tripathi, Khurshed Nariman, Annapurniah, Senapati Bapat, Hari Vishnu Kamath, Pasumpon U. Muthuramalingam Thevar, Sheel Bhadra Yagee, Satya Ranjan Bakshi
    First All India Conference June 20-22, 1940, in Nagpur; declared as a socialist political party
    Publication “Forward Bloc” newspaper started by Netaji in August 1939
    Bose’s Arrest and Exile Arrested in July 1940, escaped in January 1941, sought support in the Soviet Union and Germany
    World War II Activities Continued anti-British activities in India, notably in Bihar, without direct coordination with Bose or INA
    Post-War Reorganization Reorganized in February 1946 in Jabalpur, Madhya Pradesh; declared as a socialist party
    1946 Elections Contested elections to the Constituent Assembly and provincial legislatures; won several seats
    Arrah Conference 2nd All India Conference in January 1947 in Arrah, Bihar
    Post-Independence Status Re-established as an independent political party after India’s independence

     

    Try this PYQ:

    Who among the following were the founders of the ā€œHind Mazdoor Sabhaā€ established in 1948?

    (a) B. Krishna Pillai, E.M.S. Namboodiripad and K.C. George

    (b) Jayaprakash Narayan, Deen Dayal Upadhyay and M.N. Roy

    (c) C.P. Ramaswamy Iyer, K. Kamaraj and Veeresalingam Pantulu

    (d) Ashok Mehata, T.S. Ramanujan and G.G. Mehata

     

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