Science Updates

• Concept of Forces

  | Force | Particle | Characteristics | Role | | --- | --- | --- | --- | | Gravitational Force | Graviton | Not Yet Discovered | | | Electromagnetic Force | Photons | Repulsive or Attractive | | | Strong Nuclear | Bosons | Always Attractive | Dominates in Small Range, For Binding of Nucleus, Specifically Gluons is a type of Boson | | Weak Nuclear Force | Muons | Manifests in the form of Radiation, Hence Weak Nuclear Force is Responsible for Radiation and Radioactivity | |

• Neutrino & Neutrino Detector

  Neutrino have Negligible Mass and No Charge. It is difficult to detect because, It can [ass easily through Gravitational and Magnetic Fields. Hence they are unaffected for millions and billion of Years. Hence, thier study can give us real insight into the formation of Universe.

  Photons are affected by Many Fields

  But Neutrinos do interact with Water. How ?

  Neutrinons Repsond to Weak Nuclear Force, When they Interact with Water, they Release Muons which emits small flashes of light and hence Neutrinos are detected

  Super K experimentally confirmed the First Neutrino

  Until Now, the Largest Neutrino Detector was in Antarctica i.e Ice Cube

  Now it will be TRIDENT / Hai Ling / Ocean Ball in Pacific Ocean

  Indian Neutrino Detector is coming up in Theni in Tamil Nadu

• CAR T Cell Therapy

  1. Nex CAR 19
  2. Indigenous
  3. Only 600 Patients per Year Technology

• Parker Probe

  1. Again became the Fastest Man Made Object in Space
  2. Aditya L1 is at L1
  3. JWST is Located at L2
  4. SoHo is Located at L1

• Nasa to Launch Psyche Mission on a Asteroid

  Asteroid - Between Mars & Jupiter

  16 Pscyhe - Composition is allmost Metallic

  It is believed that it might be core of some planet or proto planet

• OSIRIS Rex for Bennu

  Mission of Returning Some Particles of Asteroid → OSIRIS Rex → from Bennu Asteroid

  This has brought the Largest Material from an Asteroid. Bennu Asteroid is important because Bennus Orbit intersects with Earths Orbit

• DART Mission (Redirection)

  DART Mission - Double Asteroid Redirection Test

  Double Asteroid → Binary System

  Here the Two Bodies Are

  Centre → Didymos

  Around It → Dimorphos

  OLICIA Cube → To Click the Pic of The Collision Between DART & and Dimorphos

  

  Satellites Life is → Life of 3 to 4 to 5 Years in the Orbit. Most Orbits Decay

• Deep Space Fiber Optics: Understanding Communication Technologies

  1. Current State of Technology:
     • Optical mediums are not typically used for open-air communications.
     • Li-Fi technology is restricted to confined spaces and isn't suitable for long-range open-air communication.
  2. Challenges of Open Air Transmission:
     • Optical waves face attenuation, scattering, and other issues when transmitted through air.
     • Space communication commonly relies on microwaves due to their ability to penetrate the ionosphere and withstand atmospheric disturbances.
  3. Speed and Efficiency:
     • Presently, data transmission from Mars provides about 5 Mbps speed, taking approximately 7.5 hours to download one set of recordings.
     • Optical air transmission is effective between spatial objects but problematic when interacting with Earth's atmosphere.
  4. Innovations in Laser Technology:
     • Efforts are being made to use near-infrared lasers, which scatter less and can provide up to 100 Mbps by compensating for atmospheric disturbances.
     • Lasers are preferred over white light due to their minimal scattering and higher precision.
  5. Challenges Ahead:
     • Developing lightweight, energy-efficient lasers that can transfer significant amounts of data.
     • Addressing the issues of data rates and transmission quality between Earth and other celestial bodies.
     • Currently, near-red frequency lasers are used, avoiding frequencies beyond the visible spectrum due to potential harm to human life.
  6. Conclusion:
     • While there are significant challenges in developing effective deep space optical communication, advancements in laser technology and a better understanding of atmospheric compensation offer promising avenues for higher speed, more reliable space data transmission.

• Nano PTA: An Overview of Applications and Challenges

  1. Introduction to Nano PTA:
     • Nano PTA refers to the use of nanotechnology to simulate enzymes that can break down harmful chemicals, similar to certain enzymes found in humans.
  2. Bio Enzyme Challenges:
     • While bio-enzymes can treat environmental hazards like oil spills, their commercial production is challenging due to scaling issues.
     • They require strict temperature conditions (below 0°C or above 40°C) and have high transportation costs.
     • Bio-enzymes are not stable for more than 2-3 hours, limiting their practicality.
  3. Advantages of Nano PTA:
     • Nano PTA offers a solution by simulating these enzymes using nano-molecules, providing stability for up to 75 days.
     • Though more costly to produce, the increased stability and effectiveness justify the investment.
  4. Applications:
     • Domestic and Industrial: Nano PTA is not universally applicable but is particularly effective in treating phenols and dyes in specific sectors.
     • Medical: In medical applications, these nano-enzymes can break down substances like dopamine and adrenaline, aiding in the early detection and treatment of conditions like Parkinson's and Alzheimer's.
  5. Types of Nano PTA:
     • Nano Lipids: These are lipid-based nanoparticles used in various applications, possibly including the delivery of these enzyme-like substances.
     • Nano Enzymes: Directly related to Nano PTA, these are nanoparticles designed to mimic the action of natural enzymes.
  6. Conclusion:
     • Nano PTA represents a significant advancement in environmental and medical applications by overcoming the limitations of natural bio-enzymes. Despite the challenges in production and cost, its stability, efficiency, and potential for precision in applications like medical treatment make it a promising field of study and development.

• WHO Recommendation of R21 Matrix M: A Step Forward in Malaria Prevention

  1. Background on Malaria Vaccines:
     • The first vaccine for malaria, Mosquirix, had limited success with an efficacy of about 30%.
     • The need for a more effective vaccine led to the development of R21 Matrix M.
  2. R21 Matrix M: A New Hope:
     • R21 Matrix M is in the final stages of trials and has shown promising results with an efficacy rate of around 75%.
     • This represents a significant improvement over previous vaccines, offering the potential to drastically reduce malaria incidence.
  3. Indigenous Development:
     • A notable aspect of R21 Matrix M is its development partnership with the Serum Institute of India, making it indigenous to India.
     • This collaboration highlights the growing expertise and capability in vaccine development within the country.
  4. Adjuvant Technology:
     • R21 Matrix M is an adjuvant vaccine, which means it uses a substance that enhances the body's immune response to the vaccine.
     • The specifics of the adjuvant in R21 Matrix M involve a combination of components designed to boost efficacy and immune response.
  5. WHO's Role and Recommendations:
     • The World Health Organization (WHO) plays a crucial role in evaluating and recommending vaccines for widespread use.
     • As R21 Matrix M progresses through its final trials, WHO's recommendation will be critical for its acceptance and deployment on a global scale.
  6. Conclusion:
     • The development of R21 Matrix M represents a significant advancement in the fight against malaria. Its higher efficacy and the involvement of indigenous institutions like the Serum Institute of India not only promise better protection against malaria but also demonstrate the potential for future vaccine developments and collaborations. With WHO's endorsement, R21 Matrix M could become a key tool in eradicating malaria globally.

• CERN Experiment Reveals Antimatters Response to Gravity

  Dark Matter

  Like Normal Matter it behaves and has tendency to Bind - it is called Dark because we cannot see it, anything in space it can only be seen if its interacts with electromagentic spectrum

  Anti Matter - Every Matter has a Anti Matter which is excalty similar like that of the sub atom but its charge is only opposite

  whenever matter is created Anti Matter is Created, when matter interacts with anti matter, it becomes zero it is anhilated

  At the time of Big Bang, equal matter and anti matter was made

  as of now we see 10 matter is there and then 3 Am is there, they should ideally be equal in universe, but the anti matter is less, it is one of the msyteries that the sceintiest are trying to solve

  to destroy they have to cmbine

• Innovative PANi

  Capacitor - Charges Immideiatley and Discharges Rapdily

  PANi- Poly Aniline and Vanadium Pentoxide nano structures

  in battery there is chemical raction to produce energy where as in capacitors there is pure electrostatic potential

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Mains 2023 Question

• Ai 2023 Question

  Generate Points X Ray and Machine Systems

  Other Analysis outside of Focus As Well - Accurate Diagnosis and Prognosis

  under Duress can someone really give an Informed Consent

  You have to THINK & Write

  Re Indentification and Linked Analysis

  Standard Points - Dat Security, Processinf and Transmission of Data

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• What is a Bio Fuel

  • Introduction

    Category of Alternate Fuels → Bio Fuels → Some Kind of Bio-Mass is converted into Energy

    It happens Naturally → Coal → Very Long Time and Pressure

    Alternate is Technology that we use to Create Bio Fuel

  • Types of Bio Fuels

    1. Solid
    2. Liquid
       1. Bio Ethanol
       2. Bio Diesel
    3. Gas
       1. Bio Gas

  • Classification of Bio Mass

    Three Broad Categories Are

    1. Carbohydrates / Sugarcane → Sugarcane Juice → Bio Ethanol
    2. Lipids / Fats → Coconut Oil → Bio Diesel
    3. Cellulose → Bio Ethanol

  • Normal Use of Bio Mass

    Most Common Form We Derive Energy from is Bio Mass → Wood Jalana

    Biomass + O2 → Combustion → CO2+Energy+Many More Components

    This is the Process of Oxidation

  • Bio Ethanol

    Lets Assume there is No Oxygen

    In that Case there is certain bacteria, which carries out Oxidation

    Biomass → Anaerobic Conditions → CO2 + H2S (hydrogen sulphide) + CH4 (methane)

    here the Methane will give me energy, this would normally happen under Anaerobic Conditions

    Here CO2 H2S and CH4 is called as Bio Gas

    Difference Between Bio Gs & Natural Gas

    Natural Gas is CNG → Source of CNG is Oil Fields ke Upar ka Portion

    Natural Gas is 95% Methane

    Where as in Bio Gas is 50 to 60% Methane → Using Bio Gas Directly there is CO2 → Carbon Foot Print will be High

    Also, the H2S will lead to Acid Rain and Corrosive Rain

    Hence Direct Application of Bio Gas is Limited

    Where as Natural Gas or CNG is a very clean fuel

    | Field | CNG / Natural Gas | Bio Gas | | --- | --- | --- | | Source | Oil Fields | Bio Mass | | Process | Natural Geological Process

    The Whole Process is Thermogenics | Artificial Process (Anaerobic) (Methanogenesis)

    The Whole Process is Biogenics | | Composition | 90% Methane | This is only 50% Methane with combination of H2S and CO2 | | Efficiency | Higher Efficiency | Lesser Efficiency |

    Methanogenesis - by Methanogens - Set of Bacteria which can carry out Anaerobic Respiration

    Methanogen → Stagnant Water, Rice / Paddy Cultivation, Guts of Cattles

    Compressed Bio Gas → Pollutants like H2S and CO2 is removed → CBG is a cleaner fuel

    CBG and CNG allmost are similar → But here still CNG will be having better and higher efficiency as compared to CNG

    Why Do We Compress → For Higher Energy Density → For Better Storage Capacity & Transportation !

    ---

    Bio Mass (Sugar / Carbs) → Fermentation → Alcohol (Ethanol or Ethyl Alcohol → Bio Ethanol

    Normally we do not target it as replacement of petrol and it is blended with Petrol → this will not work with Diesel Engines

    Terms like E5, E20, E100 → 100 Parts Ethanol like in Brazil

    E5 - 5 Parts Ethanol and 95 Parts Petrol

  • Bio Mass (Lipids)

    Through a process called as Trans Esterification

    Bio Mass → Trans Esterification → Bio Diesel

    Bio Diesel → B5, B20, B100

    B5 - 5 Parts Bio Diesle

    Here, Micro Organism is not used, this is largely a Industrial Process

• Microbial Fuel Cells

  Electrogens → Bio Mass + H2O → Electrogens → CO2 + (H+) + (e-)

  Process is Anaerobic

  Electricity is Flow of Electrons

  https://imgs.search.brave.com/gRO69m7SfHuezR8pMFxgb5MVIBXllRHfoZEcn1Kfkqo/rs:fit:860:0:0/g:ce/aHR0cHM6Ly93d3cu/ZnVlbGNlbGxzdG9y/ZS5jb20vaW1hZ2Uv/ZGF0YS9ibG9nL2Jp/b2xvZ2ljYWwtZnVl/bC1jZWxscy1ibG9n/LWFydGljbGUuanBn

• Generations of Bio Fuels

  Sources are called as Feedstocks

  • First Generation Bio Fuels

    Introduction

    1. Feedstock is Food Crops here example corn, sugar cane
    2. Process is MEthanogenesi and fermentation → Bio Ethanol and Bio Diesel
    3. COst it Low, Technology is Simple and Readily Available

    Challenges

    1. Competition with Food Crops
    2. This leads to Hike in Food Prices
    3. Land Use Change

  • Second Generation Bio Fuels

    Introduction

    1. Feedstock is Agricultural and Forest Waste → Example Rice Husk → The Challenge is here cuz it is largely cellulose. Waste as in Humans cannot use it, hence Cellulose

       Breaking Down of Cellulose → Costly and Technologically Demanding

       Cellulose are broken down by Hydrolysis

       Advantages

       Do not compete with Food Crop.

       Land Use Is not changed, as there is sufficient supply of Rice Husk

       Challenges

       Technology & Cost

    2. Second Kind of Feedstock here is → Specifically Grown Plant called → Jatropa

       Here Creating Energy is Easy

  • Third Generation Bio Fuels

    Introduction

    1. Feedstock is Largely Alage (Algal Farms) → Give Lipids &
    2. Land Use Efficiency is High
    3. Agricultural Land is not required to be diverted
    4. Not in competition with Food Crops
    5. Scaling up of it is Easier
    6. No Carbon Foot Print

    Challenges

    1. Cost is Higher
    2. Tech is available only in North America

  • Fourth Generation Bio Fuels

    1. We specifically make plants which sequester 30% more carbon

    2. Now we decrease the percentage of Lignin and Cellulolse

    3. Goall of Gen 4 Bio Fuels

       1. Hence Now Carbon Asborption is Higher
       2. Bio Mass Formation is Higher
       3. Less Cellulolse

    4. Process → We have to produce Fuel & Sequster at the Same Time

       

    5. Challenges

       1. Costly Tech and Extra Cost of Sequestration

    6. Advantages

       1. Good Energy

Note : Pending Second Gen Bio Fuel → equation for hydrolysis to convert cellulolse into energy

• Bio Fuels and Electric Vehicle

  In Terms of Carbon Foot Print which one is better is the source of electricity is green

  Most of the Bio Fuels is Carbon Neutral → There is NO Net Addition of CO2 in the Atmosphere

  EV’s are considered clean because they do not add anything to the Atmosphere

  in Natural Gas and Bio Gas → Bio Gas is More Clean. In case of Natural Gas, atleast the CO2 or Ch4 was inside earth, whcih we have extracted and taken out and now with its usage we are adding extra co2 to the atmosphere which is not the case in Bio Gas

  In Case of Cars, We talk about Tail Pipe Emissions

  Limit for Green Hydrogen is 2 Kg CO2 for Per Kg of Hydrogen. The whole process has to be certified