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  • Challenges and Ambiguities in Biotechnology Policy for GM Insects

    insect

    Central Idea

    • In April 2023, the Department of Biotechnology (DBT) issued the ‘Guidelines for Genetically Engineered (GE) Insects’.
    • The guidelines note that GE insects are becoming globally available and are intended to help Indian researchers navigate regulatory requirements.
    • However, the guidelines don’t specify the purposes for which GE insects may be approved in India or how the DBT, as a promoter of biotechnology, envisions their use.

    Genetically Modified Insects (GE Insects)

    • A genetically modified insect is any insect whose genetic material has been altered using genetic engineering techniques.
    • GE insects offer multiple benefits, such as reducing disease burden, ensuring food security, and conserving the environment.
    • India’s bioeconomy contribution is expected to reach 5% of GDP by 2030, and GE insects play a crucial role in achieving this goal.
    • GE insects find applications in vector management, crop pest control, healthcare product production, and genetic improvement of beneficial insects.

    Guidelines for GM Insects

    • Nodal Agency: The Department of Biotechnology (DBT) under the Ministry of Science and Technology (MoST) is the nodal agency and promoter of biotechnology in India.
    • Purpose: The Guidelines provide procedural roadmaps for those interested in creating GE insects.
    • Harmonization: The guidelines have been harmonized with guidance from the World Health Organization on GE mosquitoes, emphasizing their potential applications in disease control.

    Why discuss this?

    • India’s bioeconomy, currently contributing 2.6% to the GDP, aspires to reach 5% by 2030, requiring substantial investment and supportive policies.
    • However, the Department of Biotechnology (DBT) faces challenges in both funding and policy alignment with these goals.

    Challenges in Biotechnology Funding

    • Stagnating Funding: Biotechnology funding in India has stagnated, with no return to pre-pandemic levels. The current allocation stands at a mere 0.0001% of India’s GDP, insufficient to drive meaningful growth.
    • Impact on Pandemic Preparedness: Inadequate funding hampers pandemic preparedness efforts, undermining national interests and health security.
    • Lack of Private Investment: Attracting private investment for biotechnology research and development is challenging and necessitates enhanced funding efforts.

    Policies for a Thriving Bioeconomy

    Guidelines for Genetically Engineered (GE) Insects: In April 2023, the DBT released guidelines for GE insects, offering procedural guidance but revealing three key issues.

    (1) Uncertainty of Purpose

    • The guidelines lack clarity regarding the purposes for which GE insects may be approved in India, hindering alignment with the broader bioeconomy commitment.
    • Emphasis is placed on improving disease management, food security, and environmental conservation, but the economic potential of GE insects is underemphasized.

    (2) Uncertainty for Researchers

    • The guidelines only apply to research and not confined trials or deployment, limiting researchers’ options.
    • Deployment of GE insects requires community engagement and monitoring due to potential environmental impacts, but criteria for approval remain unclear.
    • The absence of clarity on government support for specific insect applications discourages research investment.

    (3) Uncertainty of Ambit

    • Ambiguity surrounds the definition of ‘beneficial’ GE insects, creating uncertainty among funders and scientists.
    • Lack of precise guidelines inhibits progress, particularly in a country with limited public and private funding.
    • Inadequate consideration of potential misuse or unintended consequences adds to the uncertainty.

    Way forward

    • To achieve the ambitious bioeconomy goals set out in the Bioeconomy 2022 report, India must address challenges in biotechnology funding and policy alignment.
    • Increased funding, private sector engagement, and clear, supportive policies are essential.
    • The guidelines for GE insects should reflect economic opportunities and research priorities, fostering a thriving bioeconomy that benefits India’s society, economy, and environment.

  • Loss and Damage Fund (LDF) talks leave developing nations at new disadvantage 

    loss and damage fund

    Central Idea

    • In the escalating climate crisis, the terms “adaptation” and “loss and damage” (L&D) have taken center stage.
    • While the concept was embraced at COP 27, recent meetings of the Transitional Committee (TC) to operationalize the fund have encountered major roadblocks.

    Birth of the L&D Fund

    • Historic Pollution Accountability: The call for affluent nations to acknowledge their historical pollution accountability dates back over 30 years.
    • COP 19 Agreement: In 2013, at COP 19 in Warsaw, Poland, member countries formalized the creation of the L&D fund. It aimed to provide financial and technical support to economically developing nations grappling with L&D due to climate change.
    • Subsequent Developments: COP 25 introduced the Santiago Network for L&D, and COP 26 established the Glasgow Dialogue on finance for L&D. COP 27 in November 2022 saw the creation of the L&D fund and a Transitional Committee (TC) tasked with operationalizing the fund.

    Challenges in Creation of the L&D Fund

    • Contentious Issues: TC meetings have grappled with contentious issues such as hosting the fund at the World Bank, the principle of common but differentiated responsibilities (CBDR), climate reparations, and eligibility criteria for developing nations.
    • Developed vs. Developing Nations: These disagreements have deepened the divide between developed and developing nations, hampering progress.

    Outcome of TC4 and TC5 Meetings

    • TC4 Impasse: The fourth meeting of the TC concluded without a consensus on how to operationalize the L&D fund, reflecting divisions on key issues.
    • TC5 Draft Recommendations: An impromptu fifth meeting of the TC led to draft recommendations forwarded to COP 28. Developing nations conceded to the fund being hosted by the World Bank temporarily, but developed nations, including the U.S., remained non-committal regarding primary donor status and rejected references to CBDR, equity, and liability in the draft.
    • Lack of Clarity: The draft does not specify the fund’s size due to pressure from certain developed nations.

    A blow to climate multilateralism

    • Erosion of Trust: The outcome underscores a severe trust deficit between affluent and emerging economies concerning historical responsibilities, deepening the rift between wealthy and impoverished nations.
    • Failure to Fulfill Commitments: The unwillingness of wealthy nations to fulfill intended commitments undermines global climate negotiations, cooperation, and climate justice.
    • Humanitarian Consequences: The watering down of the L&D fund can lead to humanitarian crises, food shortages, displacement, conflict, and exacerbate the suffering of vulnerable communities.
    • Economic and Environmental Impact: It also has economic consequences, with potential financial crises and environmental degradation, exacerbating global economic instability.
    • Security Implications: Climate-induced instability may lead to security implications as conflicts emerge in vulnerable nations, threatening to spill across borders.

    L&D as Part of Climate Justice

    • Balancing Adaptation and L&D: Adaptation and L&D are not mutually exclusive but coexist on the continuum of climate resilience.
    • Moral and Financial Responsibility: Addressing L&D is a moral and financial responsibility of affluent nations, ensuring climate justice, equity, and solidarity.
    • Global Climate Action: Failure to meet these obligations can derail global climate action, adding pressure to future COP talks.

    Conclusion

    • The protracted impasse surrounding the Loss and Damage fund reflects a troubling lack of consensus and trust between nations, hindering climate justice and cooperation.
    • As the world grapples with the consequences of climate change, balancing adaptation and addressing L&D remains paramount.

     

  • India’s Air Quality Management needs Transboundary Accountability

    airshed

    Central Idea

    • The annual recurrence of ‘severe’ air quality levels in the Delhi-National Capital region and surrounding areas during winter often leads to the misconception that air pollution is a seasonal issue primarily driven by farm residue burning.
    • However, this perception falls short of the complex, year-round, multi-source, and multi-pollutant nature of the problem.

    This article highlights the need to adopt a comprehensive, science-backed approach to address air pollution effectively.

    Year-round, Multi-source Pollution

    • Misconception: Labelling air pollution as a ‘winter’ problem caused solely by farm residue burning oversimplifies the issue.
    • Complex Reality: Air pollution is a continuous problem arising from various sources, not confined to a particular season.
    • Ineffectiveness of City-Centric Strategies: Current initiatives like the National Clean Air Programme (NCAP) focus on cities, ignoring the transboundary nature of pollution.

    Transboundary Air Pollution

    • Understanding Dispersion: Pollution emitted in one region can significantly impact air quality in another due to transboundary dispersion.
    • Inter-state Implications: Weather, topography, and climatic conditions influence transboundary dispersion, creating challenges for downwind regions.
    • Limited Jurisdictional Power: Downwind regions often lack the authority to regulate upwind pollution sources, rendering mitigation strategies ineffective.

    Need for Airshed Air Pollution Management

    • Defining Airsheds: An airshed is a geographic area governed by common meteorology, topography, and climate, impacting air mass dispersion.
    • Global Precedents: Countries like the United States, China, and the European Union have implemented effective regional airshed-level frameworks.

    Policy Levers in India

    • Existing Legal Framework: The Commission for Air Quality Management in National Capital and Adjoining Areas (CAQM) Act, 2021 recognizes the transboundary nature of air pollution.
    • Expanding Scope: The Air Act, 1981, can be expanded to cover multiple jurisdictions and pollution sources under a single air quality management framework.
    • Global Experiences: Drawing lessons from frameworks like the Cross-State Air Pollution Rule (CSAPR) in the US and the Long Range Transboundary Air Pollution (LRTAP) in Europe can inform India’s approach.

    Implementation Challenges

    • Accountability: Holding upwind polluting regions accountable for transboundary pollution remains a challenge, necessitating legal mechanisms and cooperation.
    • Conflict Resolution: Implementing a formal procedure for resolving conflicts arising from the interpretation or application of airshed-level frameworks is crucial.
    • Political Will: Ensuring consistent implementation of air quality management measures despite bureaucratic cycles and political considerations is a persistent challenge.
    • Cross-Boundary Cooperation: Encouraging cooperation between jurisdictions and regions to collectively address air pollution requires coordinated efforts.
    • Data Integration: Integrating data from diverse sources and ensuring uniformity in air quality monitoring can be challenging.

    Way Forward

    • Legal Framework Expansion: Expanding the scope of the Air Act, 1981, to encompass multiple jurisdictions and pollution sources under a single air quality management framework.
    • Global Lessons: Drawing lessons from international frameworks like the Cross-State Air Pollution Rule (CSAPR) and Long Range Transboundary Air Pollution (LRTAP) to inform India’s approach.
    • Accountability Measures: Legally binding upwind polluters to address transboundary pollution through mitigation plans.
    • Scientific Independence: Separating scientific and technical activities from political negotiations to ensure data-driven decisions.
    • Conflict Resolution Mechanism: Implementing a mechanism for resolving disputes arising from framework interpretation or application.
    • Promoting Change: Integrating an airshed-level framework within existing legal structures or introducing a new framework to deliver cleaner air for citizens.

  • CAG of India writes: As our democracy matures, my role is becoming more vital

    CAG

    Central idea

    The article highlights the pivotal role of the Comptroller and Auditor General (CAG) in India’s democracy, emphasizing citizen engagement, social audits, and capacity building for local governance. It underscores challenges in finding skilled personnel and the imperative to ensure effective grassroots service delivery. The way forward involves an international center for local governance and online courses to address competency gaps.

    Key Highlights:

    • Role of CAG in Democracy: Comptroller and Auditor General (CAG) ensures transparency, accountability, and financial integrity. Maintains separation of powers and promotes good governance through audit findings.
    • Citizen-Centric Approach: Emphasis on citizen engagement for better audit focus. Use of technology and digital solutions to enhance citizen involvement.
    • Social Audit and Local Governance: Introduction of social audit as a tool for citizen oversight. Empowering Panchayati Raj Institutions (PRIs) and urban local bodies for grassroots participation.
    • Capacity Building and Online Courses: Collaboration with Institute of Chartered Accountants for online courses. Aiming to create a pool of competent accountants for local governance.

    Challenges:

    • Competent Accountants Shortage: Difficulty in finding skilled accountants for local governments, especially in remote areas.
    • Grassroots Service Delivery: Ensuring effective delivery of devolved functions at the grassroots level.
    • Capacity Building Imperatives: The article highlights the necessity for robust capacity-building initiatives to overcome challenges and strengthen local self-governance.

    Key Terms:

    • Devolved Functions: Functions transferred to local governments for implementation.
    • Audit Diwas: Day marking the commencement of registration for online courses on November 16, 2023.

    Key Phrases:

    • Citizen Oversight: Involving citizens in identifying high-risk areas for audit.
    • Social Audit: Facilitating citizen engagement through regular audits and follow-up actions.
    • Capacity Building: Strengthening local governance through training and online courses.

    Analysis:

    The article underscores the critical role of CAG in upholding democratic principles and the evolving strategies to enhance citizen engagement. It highlights challenges in local governance, emphasizing the need for skilled personnel and effective service delivery at the grassroots.

    Key Facts/Data:

    • The Mahatma Gandhi National Rural Employment Audit of Scheme Rules was notified in 2011 to facilitate social audits.
    • The 73rd and 74th Constitutional amendments created a three-tier structure for rural self-governance.

    Way Forward:

    • International Centre for Local Governance: Establishing a center for excellence to enhance the capacity of local government auditors globally.
    • Online Courses: Introducing online courses to address the shortage of competent accountants for local bodies.

  • Move towards e-FIR, but with caution

    e-FIR

    Central idea

    The Law Commission proposes e-FIR registration for unknown accused in cognizable offenses, combining electronic submission with physical signing within three days. Despite ensuring swift crime registration, concerns arise over limited efficacy, emphasizing the importance of human intervention, especially in cases requiring immediate police involvement. The article suggests exploring e-authentication techniques for enhanced verification.

    What is e-FIR?

    • Definition: Digital system for reporting crimes to the police.
    • Process: Information submitted online through a national portal. Complainant required to physically sign the report within a specified timeframe (usually three days).
    • Objective: Streamline crime registration with initial electronic submission.

    Key provisions of law commissions report

    • e-FIR Recommendation: Proposal for e-FIR registration in all cognizable offenses with unknown accused. Verification through OTP and Aadhaar ID proof suggested by the Law Commission.
    • Verification Process: Complainant verification through OTP for authenticity. Aadhaar ID proof mandated to confirm the complainant’s identity.
    • Information Deletion: Automatic deletion of unverified information within two weeks. Complainant’s failure to sign the e-FIR within the prescribed time leads to deletion.
    • Timeframe for Physical Signing: Complainants given three days to physically sign the e-FIR for formal registration. Failure to sign within the stipulated time results in non-registration.
    • Human Intervention: The article emphasizes the importance of human interaction in certain cases, suggesting that electronic registration may be suitable only for offenses where immediate police interaction is not crucial.

    What are cognisable offences?

    • Cognizable Offenses Definition: Offenses for which police can make an arrest without a warrant. Immediate police action is permissible upon receiving information or a complaint.
    • Serious Nature: Generally involves more severe crimes. Examples include murder, robbery, kidnapping, and certain types of fraud.
    • No Court Permission Needed: Law enforcement can initiate an investigation without court authorization. Immediate action can be taken by the police upon learning about the offense.
    • Jurisdictional Variations: Classification as cognizable or non-cognizable may vary in different legal systems. The severity and nature of offenses determine their categorization.

    Challenges:

    • Limited Efficacy: The concept of e-FIR relies on obtaining information electronically but requires physical signatures within a prescribed time, limiting the effectiveness of the online process.
    • Lack of Discussion: The article notes that the Law Commission did not discuss models adopted by states currently lodging e-FIRs, leading to potential gaps in understanding the practical implementation.

    Key Phrases:

    • Cognizable Offenses: Offenses for which police can make an arrest without a warrant.
    • E-authentication Technique: The use of digital signatures or e-authentication techniques, not extensively discussed in the Law Commission’s recommendations.
    • Human Interaction: Highlighted as crucial, especially in cases like kidnapping, where immediate police involvement is essential for both medical examinations and crime scene visits.

    Key Facts/Data:

    • Verification Methods: OTP and Aadhaar are suggested as methods for verifying the complainant’s identity in the e-FIR process.
    • Three-Day Timeframe: Complainants have three days to physically sign the e-FIR; otherwise, the information is automatically deleted from the portal.

    Way Forward:

    • Mandating E-authentication: The article suggests considering the use of e-authentication techniques, such as digital signatures, to enhance the verification process and facilitate immediate e-FIR registration.
    • Clarification on Models: The Law Commission and states should provide clearer insights into the practical models adopted for e-FIR registration, addressing potential gaps in the recommendations.

  • An under-discussed facet of colonial history

    Central idea

    The article explores the historical exploitation of indentured labor, particularly focusing on the plight of Plantation Tamils in Sri Lanka. Shashi Tharoor emphasizes the challenges, discrimination, and struggles faced by this community, calling for a post-colonial, inclusive identity and highlighting the importance of decolonization in shaping a more equitable future for nations with colonial histories.

    What is indentured labour?

    • Definition: Indentured labor is a historical practice where individuals, often from impoverished backgrounds, enter a contract (indenture) with an employer.
    • Terms: In exchange for their service, laborers receive passage, accommodation, and sometimes wages, binding them to work for a specified number of years (typically 4 to 7).
    • Purpose: Common during the 17th to 20th centuries, indentured labor served as a substitute for slavery, especially in regions where slavery had been abolished.

    Key Highlights:

    • Bicentenary Commemoration: The article discusses the recent commemoration of the bicentenary of Tamil indentured laborers’ arrival in Sri Lanka, emphasizing the historical significance of this event.
    • Impact of British Empire: Shashi Tharoor highlights the detrimental impact of the British Empire’s policies, including the exploitation of colonies, draining of resources, and the introduction of indentured labor as a form of bonded servitude.
    • Plight of Plantation Tamils: The article sheds light on the challenges faced by Plantation Tamils in Sri Lanka, detailing their exploitation, discrimination, and struggles for basic rights, identity, and integration.
    • Identity and Integration: Despite adversities, Plantation Tamils forged an identity rooted in Tamil traditions and values. The article acknowledges their journey towards integration and efforts to reclaim their heritage as equal citizens of Sri Lanka.

    Challenges faced by these labors :

    • Indentured Labor Exploitation: The article highlights the exploitative nature of indentured labor, depicting the harsh conditions, misinformation, and economic hardships faced by laborers brought to distant lands.
    • Discrimination and Statelessness: Plantation Tamils faced discrimination by colonial practices, being labeled “foreigners” and rendered stateless. Discriminatory laws, like the Citizenship Act of 1948, further marginalized them.
    • Kangani System: The detrimental role of the sub-contractor system, known as kanganies, is discussed, emphasizing the abuse of power and exploitation faced by Indian laborers even after the indenture period.
    Highly important term from prelims perspective

     

    Kangani System:

     

    Role: Kangani was like a boss who hired and supervised workers.

    Function: Managed laborers on plantations, overseeing their work.

    Abuse of Power: Kangani could be unfair, exploiting workers and causing them to be in debt.

    After Work Ended: Unlike other workers, Plantation Tamils had no escape from the kangani system even after their work time was over.

    Restrictions: Workers couldn’t ask to go home or buy land because of unclear contracts with the kangani.

    Key Phrases:

    • Licensed Looting: Describes the initial phase of the British imperial project as a form of licensed looting in service of crude capitalism.
    • Indentured Labour: Refers to the replacement of slavery with bonded servitude, termed “indentured labor,” as a consequence of the abolition of slavery.
    • New Kind of Slavery: Hugh Tinker’s characterization of indentured labor, highlighting its exploitative and degrading nature.
    • Decolonization: Stresses the importance of post-colonial countries breaking free from oppressive practices and attitudes inherited from their imperial rulers.

    Analysis: Tharoor critically analyzes the historical exploitation by the British Empire, juxtaposing the wave of liberal humanism in Europe with the continued oppression in the colonies. He underscores the challenges faced by Plantation Tamils, portraying their struggle for identity and integration as a valorous subaltern endeavor.

    Key Data/Facts:

    • Bicentenary: Marks the 200th anniversary of Tamil indentured laborers’ arrival in Sri Lanka in November 1823.
    • Citizenship Act of 1948: The legislation rendered Plantation Tamils stateless, hindering their assimilation into Sri Lankan society.
    • Economic Shift to Tea: The shift from coffee to tea plantations in Sri Lanka resulted in a massive transfer of Indian Tamils due to increased demand for labor.

    Way Forward:

    • Decolonization: Tharoor emphasizes the need for post-colonial countries like Sri Lanka to actively decolonize themselves from oppressive practices inherited from imperial rulers.
    • Inclusive Identity: The article suggests that forging an inclusive, post-colonial identity for all people in Sri Lanka should be central to the nation-building process.
    • Land Ownership: The government’s potential plan to divide plantations, making workers owners of the land they work on, is seen as a positive step, representing a potential way forward.

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  • Hypertension Care: Insights from India’s Healthcare Landscape

    hypertension

    Central Idea

    • An analysis of recent National Family Health Survey data, as published in the journal JAMA, has revealed substantial disparities in the prevalence, diagnosis, treatment, and control of hypertension within Indian states and districts.
    • These disparities underscore the need for targeted and decentralized solutions to address the complexities of hypertension care across the nation.

    What is Hypertension?

    • Hypertension, commonly known as high blood pressure, is a medical condition in which the force of blood against the walls of the arteries is consistently too high.
    • Blood pressure is measured in millimetres of mercury (mm Hg) and is expressed as two numbers: systolic pressure over diastolic pressure.
    • The systolic pressure represents the force when the heart contracts, while the diastolic pressure represents the force when the heart is at rest between beats.
    • Normal blood pressure is typically around 120/80 mm Hg. Hypertension is diagnosed when blood pressure consistently measures at or above 130/80 mm Hg.
    • However, different organizations may have slightly different guidelines for defining hypertension.

    Key Findings of the Study

    • National-Level Observations: The national-level data reveals a common trend – a significant proportion of individuals with hypertension remain undiagnosed, and even among those diagnosed, many do not initiate treatment. Moreover, among those who commence treatment, few achieve adequate blood pressure control.
    • Inter-State Variation: The study notes that while the prevalence of hypertension is comparable in southern states, it is notably higher than the national average, with 29.9% of the population in these states affected compared to 26.8% nationally.
    • District-Level Disparities: The study highlights substantial variations within states. For instance, in Meghalaya, the prevalence of hypertension differs significantly across Garo Hills, Jaintia Hills, and Khasi Hills districts, affecting the diagnosis rates. A similar scenario is observed in Karnataka’s Chikmagalur, Shimoga, Udupi, and Chitradurga districts.

    Impact of Demographics and Education

    • Gender and Age: Despite hypertension being more prevalent in men, the data surprisingly reveals that women are more likely to be diagnosed, receive treatment, and achieve blood pressure control.
    • Socio-Economic Status: Individuals in the wealthiest quintile demonstrate higher rates of prevalence, diagnosis, treatment initiation, and control.
    • Education Level: Completion of schooling correlates with better rates of diagnosis, treatment, and control compared to those with no schooling or up to Class 11.

    Significance of Inter-State and Inter-District Variability

    • Resource Allocation: District-level data can guide state governments in allocating resources efficiently. It helps identify districts with a high prevalence of hypertension that may require increased screening and diagnostic facilities or better accessibility to medicines.
    • Continuum of Care: Managing chronic conditions like hypertension requires a distinct healthcare approach. Ensuring regular availability of medicines, digitization of records for follow-ups, and the establishment of accessible treatment centers are critical components of an effective continuum of care.

    Controlling Hypertension in India

    • WHO’s Call to Action: The World Health Organization (WHO) emphasizes the potential to avert nearly 4.6 million deaths in India by 2040 if half of hypertensive individuals can control their blood pressure.
    • Government Initiative: India launched a comprehensive initiative in 2023 to treat 75 million people with hypertension or diabetes by 2025. This endeavor extends beyond infrastructure expansion to active screening, treatment initiation, medication accessibility, and follow-up mechanisms.

    Conclusion

    • India’s quest to bridge the gaps in hypertension care demands a multifaceted approach.
    • The district-level insights offered by this study can guide policymakers in crafting targeted solutions, ultimately enhancing the continuum of care for hypertension and contributing to better public health outcomes.

  • Genetics of Silk Moth Domestication

    silk

    Central Idea

    • Silk, often hailed as the queen of fibers, boasts a rich and diverse history, with roots stretching back over 5,000 years to ancient China.
    • Its story encompasses the transition from the wild silk moth (Bombyx mandarina) to the domesticated silk moth (Bombyx mori), offering a fascinating glimpse into human ingenuity and nature’s adaptability.

    Silk Moth Domestication

    • Ancient Beginnings: Humans began domesticating silk moths from the wild Bombyx mandarina in China, marking the dawn of sericulture.
    • Global Reach: The domesticated Bombyx mori moth, significantly larger than its wild ancestor, now thrives worldwide, including in India.
    • Silk Powerhouse: India’s prowess in silk production makes it the second-largest raw silk producer globally, after China.

    Silkworms and Mulberry Leaves

    • Exclusive Diet: Caterpillars, known as silkworms, feed solely on the leaves of mulberry plants (genus Morus).
    • Cocoon Construction: The domesticated silk moth extrudes silk fibers of remarkable length, up to 900 meters, to construct larger cocoons. These caterpillars have lost the ability to fly and their pigmentation, adapting to human care.

    Diversity in Silk

    • Wild Silk Varieties: “Wild” silks, including muga, tasar, and eri, are derived from various moth species such as Antheraea assama, Antheraea mylitta, and Samia cynthia ricini.
    • Contrasting Characteristics: Non-mulberry silks differ significantly from mulberry silks, featuring shorter, coarser, and harder threads.

    The Enigmatic Cocoon Colors

    • Natural Variations: Domesticated silk moth cocoons come in a stunning array of colors, including yellow-red, gold, flesh, pink, pale green, deep green, and white.
    • Human Influence: Selective breeding for differently colored cocoons aimed to create colored silks, but these pigments are water-soluble, eventually fading. Acid dyes are used to achieve colored silks in the market.
    • Origins of Pigments: Pigments in cocoons are derived from carotenoids and flavonoids produced by mulberry leaves. Silkworms ingest these chemicals, which are then bound to silk proteins and spun into a single fiber.

    Mutant Strains and Genetic Insights

    • Valuable Resource: Mutant strains of silk moths have emerged due to mutations in genes governing pigment uptake, transport, and modification.
    • Diversity from Domestication: Silk domestication’s molecular basis has been primarily explored in China and Japan, with notable contributions from Indian scientists.

    Decoding Cocoon Colors: A Model Emerges

    • Genetic Factors: Researchers at Southwest University in Chongqing, China, proposed a model explaining how different mutations create diverse cocoon colors.
    • Key Genes: Genes like Y, C, F, Rc, and Pk play roles in pigment transportation and absorption, leading to variations in cocoon colors.
    • Green Cocoon Mystery: Mutations in the Y gene result in green cocoons when carotenoids are not absorbed, but flavonoids are. The intensity of green depends on other genes’ mutations, affecting flavonoid uptake.
    • Flavonoid Cluster: A cluster of closely related genes influences flavonoid uptake in cocoons.

    Gene Manipulation and Domestication

    • Hybrid Offspring: Researchers have created hybrid moths by interbreeding domesticated and ancestral silk moths.
    • Apontic-like Gene: Mutations in the apontic-like gene revealed differences in melanin production between domesticated and wild silk moths.
    • Regulatory Sequences: Variations in gene regulation sequences dictate when and where genes are activated or deactivated.

  • Basics of Electric Power Transmission

    power transmission

    Central Idea

    • In 1954, India’s first Prime Minister, Jawaharlal Nehru, referred to dams as “the temples of modern India” during a visit to the Bhakra Nangal Dam site.
    • This statement emphasized the critical role of electricity in the nation’s development and its transmission as the cornerstone of economic progress.

    This article offers a simplified introduction to the world of electric power transmission.

    Three Components of Power Supply

    1. Generation: Electricity is generated at power plants, including renewable energy installations.
    2. Transmission: It involves the distribution of electricity through a network comprising substations, switches, overhead and underground cables, transformers, and more.
    3. Distribution: The final step is delivering electricity to consumers, tailored to the requirements of various machines and applications.

    Key Principles of Electric Power Transmission

    • Efficiency and Voltage: Lower current and higher voltage enhance transmission efficiency. Transformers play a crucial role in voltage manipulation, stepping it up before transmission and reducing it for consumers.
    • Resistance and Cable Thickness: Transmission cables exhibit resistance, leading to energy loss. Thicker cables minimize losses but also increase costs.
    • Distance and Transmission Cost: Longer transmission distances result in lower costs.
    • Alternating Current (AC): AC power transmission is predominant due to its adaptability and higher efficiency compared to direct current (DC). However, higher AC frequencies result in increased resistance.

    Understanding AC Power

    • Three-Phase AC: AC power transmission commonly utilizes three-phase AC, where voltage periodically changes polarity.
    • Phases in AC: In a three-phase AC circuit, three wires carry AC current in different phases, typically at 120°, 240°, and 360°.
    • AC in Household Appliances: Consumers receive three-phase AC power, which is used in household appliances for ease of control.

    Transmission Process

    • Voltage Stepping: Voltage is stepped up at power plants using transformers before being transmitted.
    • Transmission Lines: Suspended from transmission towers, transmission lines carry the electricity across long distances.
    • Safety Measures: Insulators, circuit-breakers, grounding, arresters, and dampers ensure safe and stable transmission.
    • Switches: Used to control current availability and to redirect currents between lines.
    • Substations: Different types of substations perform tasks like power collection, frequency modification, voltage reduction for distribution, and diagnostics.

    Operation of Power Grids

    • National Grids: A national grid encompasses generation, transmission, and distribution. It must accommodate various power sources, production locations, and consumption patterns.
    • Storage Facilities: Grids include storage systems to manage surplus and deficit power supply.
    • Flexible Sources: Gas turbines and automated systems respond to fluctuating consumer demand or emergencies.
    • Grid Management: Grids maintain synchronized frequencies, manage demand, control voltage, and improve power factor.
    • Wide-Area Synchronous Grids: Such grids, where all generators produce AC at the same frequency, result in lower costs but require measures to prevent cascading failures.

    Key agencies in Power Transmission

    India’s power transmission sector relies on key agencies to manage and enhance the electricity grid. These include:

    • State Transmission Utilities (STUs): Managing intrastate power transmission within each state.
    • National Load Despatch Centre (NLDC): Maintaining national power balance and grid security.
    • Regional Load Despatch Centres (RLDCs): Overseeing regional power operations and grid stability.
    • Central Electricity Regulatory Commission (CERC): Regulating tariffs and power transmission at the national level.
    • State Electricity Regulatory Commissions (SERCs): Regulating power transmission within individual states.
    • Private Transmission Companies: Collaborating with government agencies for grid expansion and modernization.

    Conclusion

    • Electric power transmission is a complex but vital aspect of modern civilization, serving as the backbone of economic development.
    • Understanding its basic principles sheds light on the intricate network that powers our lives and fuels progress.

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