💥UPSC 2026, 2027, 2028 UAP Mentorship (March Batch) + Access XFactor Notes & Microthemes PDF
Talk to mentor

Civilsdaily

Login

Type: Prelims Only

  • Innovations in Biotechnology and Medical Sciences

    Vagus Nerve: Stimulation and Health Implications

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Vagus Nerve

    Mains level: NA

    Vagus Nerve

    Central Idea

    • There’s a growing buzz online about the vagus nerve—ways to stimulate it and the potential benefits for various health issues, from anxiety to obesity.
    • Videos and devices abound, offering suggestions for vagus nerve stimulation.
    • Recent research has even linked vagus nerve dysfunction to long COVID.

    What is the Vagus Nerve?

    • A Pair of Nerves: The vagus nerve consists of two nerves, one on each side of the body. They run from the brainstem through the neck, chest, and stomach.
    • Part of the Parasympathetic Nervous System: These nerves are a vital component of the parasympathetic nervous system, responsible for relaxing and resting the body, regulating functions like heart rate, blood pressure, and digestion. They also play a role in the immune system.

    Why is the Vagus Nerve being researched?

    Several aspects make the vagus nerve a subject of intense research:

    • Extensive Reach: The vagal nerves are the longest cranial nerves, connecting the brain to the large intestine and passing through or connecting with crucial areas in the neck, heart, lungs, abdomen, and digestive tract.
    • Communication Hub: These nerves contain 75% of the nerve fibers of the parasympathetic nervous system, facilitating bidirectional communication between the brain and the body.
    • Health Implications: Researchers explore how stimulating these “sensory superhighways” could trigger the parasympathetic nervous system and potentially benefit various health conditions.

    Conditions Treated by Vagus Nerve Stimulation

    • Epilepsy and Depression: Implantable vagus nerve stimulators are used to treat epilepsy and depression, particularly when conventional treatments are ineffective. These devices stimulate areas of the brain associated with seizures and mood regulation.
    • Inflammation Regulation: The vagus nerve plays a role in regulating inflammation. Suppressing inflammation after an infection is resolved has implications for treating various conditions.

    Vagus Nerve and Long COVID

    • A study suggests a connection between vagus nerve dysfunction and post-COVID-19 condition (PCC) or long COVID. Patients with PCC exhibited symptoms related to vagus nerve dysfunction, indicating its potential role in the pathophysiology of PCC.
    • Other research explores impaired vagal activity in long COVID patients and potential therapeutic approaches involving vagal nerve stimulation.

    Natural Vagus Nerve Stimulation

    Numerous natural methods are believed to stimulate the vagus nerve, including:

    • Meditation: Focusing on longer exhales than inhales.
    • Exercise: Engaging in physical activity.
    • Massage: Techniques like reflexology.
    • Music: Humming and singing.
    • Cold Exposure: Placing a cold pack on your face or using icy water immersion.

    Limitations

    • Implanted vagus nerve stimulation is not a one-size-fits-all solution and should not replace conventional treatment.
    • It serves as an adjunctive treatment for most conditions and requires further research to explore its potential therapeutic effects comprehensively.
    • Vagus nerve stimulation devices should only be used under medical supervision due to their influence on heart rate and blood pressure.
    • Different protocols must be followed, making clinic-based usage essential.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • Promoting Science and Technology – Missions,Policies & Schemes

    India can now issue OIML certificates: What this means, its significance

    Prelims Only | Science Tech | Mains Paper 3: Achievements Of Indians In S&T

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: OIML (International Organisation of Legal Metrology)

    Mains level: Read the attached story

    Central Idea

    • India has achieved a significant milestone by becoming a 13th nation as OIML (International Organisation of Legal Metrology) certificate-issuing authority.
    • The other countries are Australia, Switzerland, China, Czech Republic, Germany, Denmark, United Kingdom, Japan, Netherlands, Sweden and Slovakia.

    Understanding OIML

    • The OIML, established in 1955 and headquartered in Paris, is a renowned international standard-setting body in the field of legal metrology.
    • Its primary role is to develop model regulations, standards, and related documents for use by legal metrology authorities and industries worldwide.
    • These standards are crucial in harmonizing national laws and regulations concerning the performance of measuring instruments, such as clinical thermometers, alcohol breath analyzers, radar speed measuring instruments, ship tanks at ports, and petrol dispensing units.

    India’s OIML Membership

    • India became an OIML member in 1956.
    • Simultaneously, India signed the metric convention, emphasizing its commitment to international standards in metrology.

    OIML Certificate Significance

    • The OIML-CS (Certificate System) is a globally recognized system for issuing, registering, and using OIML certificates, along with their associated OIML type evaluation/test reports.
    • With India’s inclusion, the number of countries authorized to issue OIML certificates has risen to 13.
    • The OIML certificate is a single document accepted universally.
    • For instance, if an equipment manufacturer in Noida wishes to export their products to the US or any other country, they no longer need to obtain certification from one of the 12 other authorized countries.
    • India’s certification is now globally accepted, facilitating seamless exports and international compliance.

    Benefits for the Indian Economy

    India’s newfound status as an OIML certificate-issuing authority offers several advantages for the Indian economy:

    • Increased Exports: Indian manufacturers can now export their products with greater ease, reducing trade barriers and expanding their global market reach.
    • Foreign Exchange Earnings: The certification services provided by India will attract neighbouring countries and international manufacturers. This influx of clients seeking certification services will lead to an increase in foreign exchange earnings for India.
    • Employment Generation: To meet the growing demand for certification services, India is expected to witness a surge in employment opportunities in the legal metrology sector.
    • Resource Efficiency: The streamlined certification process will reduce redundancy and save valuable resources, making the certification process more efficient.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • Parliament – Sessions, Procedures, Motions, Committees etc

    Explained: Special Session of Parliament

    Prelims Only | Polity | Mains Paper 2: Parliament & State Legislatures

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Special Session of Parliament

    Mains level: Not Much

    Central Idea

    • The Union government of India has announced a special session of Parliament to be held in the newly constructed building.
    • This session holds particular significance as it marks the first official use of the new parliamentary facility.

    Special Session of Parliament: An Overview:

    • A special session of Parliament refers to a unique meeting convened outside of the regular parliamentary sessions.
    • The term “special session” is not explicitly mentioned in the Constitution of India.
    • Its convening is carried out as per the provisions of Article 85(1) of the Constitution.

    Procedure of calling such Session

    • Article 85(1) of the Indian Constitution stipulates the procedure for summoning Parliament.
    • This constitutional provision grants the President the authority to call Parliament into session, including special sessions, as deemed necessary.
    • It says:

    “The President shall from time to time summon each House of Parliament to meet at such time and place as he/she thinks fit, but six months shall not intervene between its last sitting in one session and the date appointed for its first sitting in the next session.”

    Historical Context of Special Sessions:

    Special sessions of Parliament have varied in their focus and format over the years:

    [A] Special Sessions with Debates:

    • 2015: A special session commemorated Dr. B.R. Ambedkar’s 125th birth anniversary.
    • 1997: Parliament convened to mark India’s 50th anniversary of independence.
    • 1962: The agenda included a discussion on the India-China war situation.

    [B] Midnight Special Sessions (Without Debates):

    • 1972: A session was held to celebrate 25 years of India’s independence.
    • 1992: A special session marked the 50th anniversary of the Quit India Movement.
    • 2017: A session was convened to mark the rollout of the Goods and Services Tax (GST).

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • Modern Indian History-Events and Personalities

    Operation Polo: Integrating Hyderabad – 75 Years On

    Prelims Only | | Mains Paper 1: Modern Indian History

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Operation Polo

    Mains level: Not Much

    operation polo

    Central Idea

    • September 13, 2023, marks the 75th anniversary of Operation Polo, a significant military action undertaken by the Indian Army in 1948 to integrate the princely state of Hyderabad.
    • This operation, also known as the “Police Action,” led to the Nizam of Hyderabad’s forces surrendering to the Indian Army by September 18, 1948.
    • Understanding the background and events surrounding Operation Polo is essential to appreciate its historical significance.

    Context of Operation Polo

    (1) The Nizam’s Stand:

    • The Nizam of Hyderabad, Mir Osman Ali Shah, was reluctant to join India or Pakistan after India’s Independence in 1947.
    • He exploited the diversion of Indian resources towards the Kashmir conflict, signing a standstill agreement with India in November 1947, maintaining the status quo in Hyderabad.

    (2) Growing Tensions:

    • Hyderabad, a populous and prosperous state in the Deccan, was predominantly Hindu but administered by Muslim rulers.
    • The state had no common border with Pakistan, yet the Nizam sought amicable relations with Pakistan.
    • The Nizam’s forces, especially the Razakars, escalated tensions with their actions, including cross-border raids and overtures to Pakistan.

    The Military Campaign: Operation Polo

    (1) Hyderabad’s Forces and Situation:

    • Hyderabad’s military consisted of approximately 25,000 troops, with limited training and readiness.
    • The Razakars, though numerous, posed a minor military challenge.

    (2) Indian Army’s Leadership:

    • Major General Jayanto Nath Chaudhuri, the General Officer Commanding of 1 Armoured Division, led the Indian forces.

    (3) Multi-Directional Offensive:

    • The primary assault came from the west, led by 1 Armoured Division, supported by forces from the north, south, and east.
    • Key elements included the Smash Force, Kill Force, and Vir Force in the western thrust.
    • Additional thrusts were launched from Aurangabad, Jabalpur, and the eastern front.
    • The southern thrust originated from Vijayawada.

    Conclusion: Surrender and Significance

    (1) Ceasefire and Surrender:

    • The Nizam announced a ceasefire on September 17, 1948.
    • On September 18, Major General Chaudhuri entered Hyderabad, and Major General El Edroos surrendered to him.
    • Major General Chaudhuri was subsequently appointed as the Military Governor of Hyderabad.

    (2) Honoring a Hero:

    • Havildar Bachhitar Singh of 2 Sikh was posthumously awarded the first Ashoka Chakra of Independent India for his role in Operation Polo.
    • He sacrificed his life on September 13, 1948, while advancing towards Naldurg, a part of Hyderabad state.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • Indian Air Force Updates

    C-295 Transport Aircraft: All you need to know

    Prelims Only | Security Issues | Mains Paper 3: Various Security Forces, Agencies & Their Mandates

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: C-295

    Mains level: Not Much

    c-195

    Central Idea

    • In a significant milestone, the Indian Air Force (IAF) received its inaugural C-295 transport aircraft during a ceremony held in Seville, Spain.
    • IAF’s fleet of C-295s is set to become the largest globally, with an initial order for 56 aircraft.

    About C-295

    • The C-295MW is a transport aircraft with a carrying capacity ranging from 5 to 10 tonnes.
    • It can accommodate up to 71 troops or 49 para-troopers, offering significant flexibility.
    • The aircraft boasts a maximum cruise speed of 260 knots, ensuring rapid deployment.
    • Its exceptional low-level flight characteristics enable tactical missions, even at slow speeds as low as 110 knots.
    • The C-295 is equipped with a rear ramp door, facilitating swift troop and cargo deployments.
    • Each aircraft is outfitted with an indigenous Electronic Warfare Suite developed by Bharat Electronics Ltd and Bharat Dynamics Limited.
    • Two Pratt & Whitney Canada PW127G turboprop engines propel the aircraft.
    • The C-295 exhibits short take-off and landing (STOL) capabilities, enabling the use of unprepared airstrips.

    Significance of the aircraft

    • India’s entry into aircraft production will place it among a select group of nations with the capability to manufacture C-295 aircraft.
    • This group includes countries like the US, UK, Russia, France, Italy, Spain, Ukraine, Brazil, China, and Japan.
    • The project will stimulate India’s aerospace ecosystem, involving numerous MSMEs across the country in the manufacturing of aircraft components.
    • This includes areas of strategic importance, such as the border with China and the Andaman and Nicobar archipelago.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • Genetically Modified (GM) crops – cotton, mustards, etc.

    International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA)

    IOCRPrelims Only | International Relations | Mains Paper 2: Bilateral, Regional and Global Groupings and agreements involving India

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: ITPGRFA

    Mains level: NA

    Central Idea

    • In a global seminar organized by the International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA) and the Food and Agriculture Organisation (FAO), President of India underscored the importance of safeguarding farmers’ rights.

    About ITPGRFA

    Description
    Objective Conservation and sustainable use of plant genetic resources for food and agriculture.
    Enactment Year 2001
    Key Principles Conservation, Access and Benefit-Sharing, Farmers’ Rights.
    Coverage Multilateral system covering 64 vital crop species.
    Implementation Encourages signatory countries to integrate treaty provisions into national legislation.
    Monitoring Establishes a system for monitoring treaty implementation and reporting.
    Global Impact Contributes to preserving agricultural biodiversity, sustainable agriculture, and equitable access to genetic resources.
    India’s Role India actively participates and supports the treaty, providing rights to farmers for unbranded seeds and registering their varieties, serving as a model for the world.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • Zoonotic Diseases: Medical Sciences Involved & Preventive Measures

    Nipah breaks out again in Kerala

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Nipah Virus

    Mains level: NA

    nipah

    Central Idea

    • The reappearance of Nipah infection in Kerala, with two confirmed deaths and two individuals under treatment, has raised concerns about this lethal viral disease.
    • Nipah, while not as contagious as COVID-19, is significantly more deadly, with a case fatality rate ranging from 40% to 75%.

    What is Nipah Virus Infection?

    • Nipah is a zoonotic disease, meaning it is transmitted to humans through infected animals or contaminated food.
    • Direct person-to-person transmission through close contact with an infected individual is also possible.
    • Symptoms include fever, headache, cough, sore throat, difficulty in breathing, and vomiting.
    • In severe cases, Nipah infection can progress to disorientation, drowsiness, seizures, and encephalitis (brain swelling), ultimately leading to coma and death.

    Transmission of Nipah Virus

    • Historical Outbreaks: The Nipah virus was first reported in Malaysia (1998) and Singapore (1999), deriving its name from a Malaysian village where it was first isolated. The primary mode of transmission from animals to humans is through the consumption of contaminated food. This can occur via the consumption of raw date palm sap or fruit contaminated with saliva or urine from infected bats.
    • Animal Host Reservoir: Fruit bats, commonly known as flying foxes, are the known hosts of the virus. They transmit it to other animals like pigs, dogs, cats, goats, horses, and sheep. Human infection usually occurs through direct contact with these animals or the consumption of food contaminated by their saliva or urine. Human-to-human transmission is also documented, particularly in families and healthcare settings.

    Nipah Virus Spread and Mortality

    • Slow Spread: Unlike the rapid transmission of SARS-CoV-2, the Nipah virus spreads more slowly. However, its high mortality rate is a significant concern.
    • High Mortality: During outbreaks, Nipah has shown a mortality rate as high as 68-75%. For example, in the 2001 Siliguri outbreak, 45 of the 66 infected individuals succumbed to the virus. Similarly, during the 2018 Kerala outbreak, 17 of the 18 confirmed patients died.
    • Localized Outbreaks: Notably, Nipah outbreaks have remained localized and were contained relatively quickly. The virus’s limited infectiousness and low human-to-human transmission contribute to this containment.
    • Reproductive Number (R0): Studies indicate an R0 of about 0.48 for Nipah outbreaks, signifying a slow rate of transmission within the population. An R0 value below one suggests that an infected person does not infect more than one other individual, leading to a relatively rapid end to the outbreak.
    • High Death Rates Limit Transmission: The virus’s high death rates also play a role in restricting its transmission.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • Innovations in Biotechnology and Medical Sciences

    IISc develops Hybrid Nanoparticles to detect and kill cancer cells

    Prelims Only | Science Tech | Mains Paper 3: Achievements Of Indians In S&T

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Gold and Copper Sulfide Nanoparticles

    Mains level: NA

    Nanoparticles

    Central Idea

    • Researchers at the Indian Institute of Science (IISc) have pioneered a novel approach with the potential to detect and eradicate cancer cells, particularly those forming solid tumour masses.

    Gold and Copper Sulfide Nanoparticles

    • Innovative Nanoparticles: IISc scientists have engineered hybrid nanoparticles that blend gold and copper sulfide, resulting in multifunctional nanoparticles with promising implications for cancer detection and treatment.
    • Photothermal and Oxidative Properties: These nanoparticles exhibit photothermal capabilities, where they absorb light and convert it into heat, effectively killing cancer cells. Moreover, they produce singlet oxygen atoms, which further contribute to the cells’ toxicity.
    • Combining Mechanisms: The nanoparticles employ both photothermal and oxidative mechanisms to target and eliminate cancer cells effectively.

    Revolutionizing Cancer Diagnosis

    • Ultrasound Waves: Beyond cancer treatment, these hybrid nanoparticles hold potential for cancer diagnosis. Their photoacoustic property enables them to absorb light and generate ultrasound waves.
    • High Contrast Detection: The ultrasound waves enhance the contrast for detecting cancer cells once the nanoparticles reach them. This method offers superior image resolution compared to traditional CT and MRI scans.
    • Clarity and Oxygen Saturation Measurement: Scans generated through ultrasound waves boast greater clarity and the ability to measure oxygen saturation within tumors, enhancing cancer detection accuracy.
    • Integration with Existing Systems: The nanoparticles can be seamlessly integrated with current detection and treatment systems. For instance, endoscopes used for cancer screening can trigger nanoparticle-induced heat generation with focused light.

    Overcoming Size Limitations

    • Size Advantages: These hybrid nanoparticles, measuring less than 8 nm, possess a critical advantage in terms of mobility within tissues and their ability to reach tumors.
    • Potential Safe Elimination: Due to their diminutive size, researchers anticipate that these nanoparticles can exit the human body naturally without accumulating. However, extensive safety studies are essential to confirm their suitability for internal use.
    • Successful Lab Testing: In laboratory settings, the researchers conducted successful tests using these nanoparticles on lung and cervical cancer cell lines, demonstrating their potential.
    • Clinical Development: The promising outcomes from this study propel the nanoparticles closer to clinical development.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • International Space Agencies – Missions and Discoveries

    What are Picoflare Jets?

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Picoflare Jets

    Mains level: Not Much

    picoflares

    Central Idea

    • A recent revelation from the Solar Orbiter Aircraft, a collaborative endeavour between the European Space Agency and NASA, has illuminated the Picoflare jets erupting from the sun’s outer atmosphere.
    • These jets, marked by their supersonic emergence and brief durations of 20 to 100 seconds, have captured the attention of scientists and space enthusiasts alike.

    What are Picoflare Jets?

    • Picoflare jets, observed amidst emissions from the observed coronal hole, are diminutive in scale but pack a potent punch.
    • Their ephemeral existence belies their significance, as scientists have calculated that they contribute a substantial portion of the solar winds’ energy.
    • These solar emanations earned their name, “picoflare jets,” owing to their energy levels, which hover around one-trillionth of the solar flares’ immense energy potential.
    • Solar winds, driven by strong gusts, can not only craft auroras in Polar Regions but also disrupt Earth’s magnetic field and jeopardize electronic systems on satellites and terrestrial circuits.

    About Solar Orbiter Aircraft

    • A Stellar Journey: Launched in 2020, the Solar Orbiter Aircraft embarks on a mission to capture unprecedented images of the Sun, propelling closer than any previous spacecraft.
    • Instrumentation Excellence: Equipped with six remote-sensing instruments and four sets of in situ instruments, the spacecraft is primed for comprehensive solar exploration.
    • Mission Objectives: The Solar Orbiter Aircraft carries two primary objectives: to scrutinize the Sun’s 11-year cycle of magnetic activity ebbs and flows and to delve into the mysteries of the solar corona, the upper echelon of the Sun’s atmosphere.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now

  • Innovations in Sciences, IT, Computers, Robotics and Nanotechnology

    Non-Reciprocity: The physics of letting waves go one way but not the other

    Prelims Only | Science Tech | Mains Paper 3: Achievements Of Indians In S&T

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Reciprocity Principle

    Mains level: NA

    reciprocity

    Central Idea

    • Reciprocity, a fundamental principle of physics, dictates that if a signal can travel from Point A to Point B, it can also journey from Point B to Point A.
    • This intuitive concept holds significance in various aspects of daily life and serves as the basis for many technological breakthroughs and challenges.

    Exploring Reciprocity

    • The Principle Defined: Reciprocity posits that a signal transmitted from a source (Point A) to a destination (Point B) can also travel in the reverse direction by merely swapping the positions of the source and destination.
    • Everyday Analogies: Familiar scenarios, such as shining a torchlight or observing an object under a streetlight, exemplify reciprocity in action.
    • Counterintuitive Instances: Some situations defy intuition, like interrogation scenes in movies where one party can see through a window while the other cannot, or observing someone walking in darkness.

    Applications in Antennas and Beyond

    • Antennas: Reciprocity plays a pivotal role in antenna technology, enabling both the transmission and reception of signals. Engineers utilize reciprocity to assess antennas’ reception quality, simplifying testing processes for radar, sonar, seismic surveys, and MRI scanners.
    • Challenges in Spying: While reciprocity aids signal reception, it poses challenges in espionage, as it allows signals to be captured from an enemy base while potentially revealing one’s own location.
    • One-Way Traffic: To counteract reciprocity, scientists employ devices composed of components with specific properties. These devices break reciprocity, enabling signals to travel in one direction only.

    Diverse Ways to Break Reciprocity

    • Magnet-Based Non-Reciprocity: Utilizing wave plates and Faraday rotators, this method disrupts reciprocity for electromagnetic waves.
    • Modulation: By continuously altering a medium’s parameters in time or space, modulation offers a means to control signal transmission.
    • Nonlinearity: Varying a medium’s properties based on signal strength and direction introduces nonlinearity, another avenue to break reciprocity.

    Revolutionizing Technologies

    • Quantum Computing: Non-reciprocal devices find applications in quantum computing, where they amplify signals to detect quantum states effectively.
    • Miniaturization: The trend towards nanoscale and microscale devices includes non-reciprocal components, some as small as a strand of hair divided by a thousand. These miniature devices promise contributions to fields like self-driving cars, where efficient signal monitoring is essential for safety.

    Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024

    Attend Now