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The world is facing an acute shortage of clean and safe freshwater. What are the alternative technologies which can solve this crisis? Briefly discuss any three such technologies citing their key merits and demerits. (Answer in 250 words) [UPSC 2024]
Model Answer Introduction The world is facing an acute shortage of clean and safe freshwater, driven by factors such as population growth, climate change, and pollution. Innovative technologies are essential to address this crisis. Here are three alternative technologies that can help solve the fresRead more
Model Answer
Introduction
The world is facing an acute shortage of clean and safe freshwater, driven by factors such as population growth, climate change, and pollution. Innovative technologies are essential to address this crisis. Here are three alternative technologies that can help solve the freshwater scarcity issue, along with their merits and demerits.
1. Desalination Technologies
Desalination involves converting seawater into freshwater by removing salt and impurities. This technology is particularly beneficial for coastal regions facing freshwater shortages. For instance, the Sorek desalination plant in Israel supplies approximately 20% of the country’s drinking water.
2. Rainwater Harvesting
Rainwater harvesting captures and stores rainwater for reuse, especially in areas with seasonal rainfall. Traditional methods, such as Johads in Rajasthan, effectively recharge groundwater and provide irrigation water.
3. Wastewater Recycling and Reuse
This technology treats and reuses wastewater for various applications, including industrial use and potable water. Singapore’s NEWater project is a notable example, meeting about 40% of the country’s water needs.
Conclusion
In conclusion, tackling freshwater scarcity requires a combination of innovative technologies like desalination, rainwater harvesting, and wastewater recycling, along with effective policies and community involvement to ensure sustainable water access.
See lessWhat is the technology being employed for electronic toll collection on highways? What are its advantages and limitations? What are the proposed changes that will make this process seamless? Would this transition carry any potential hazards? (Answer in 150 words) [UPSC 2024]
Model Answer Introduction Electronic Toll Collection (ETC) on highways is transforming toll payment systems by utilizing advanced technologies such as RFID (Radio Frequency Identification), ANPR (Automatic Number Plate Recognition), and DSRC (Dedicated Short-Range Communication). These technologiesRead more
Model Answer
Introduction
Electronic Toll Collection (ETC) on highways is transforming toll payment systems by utilizing advanced technologies such as RFID (Radio Frequency Identification), ANPR (Automatic Number Plate Recognition), and DSRC (Dedicated Short-Range Communication). These technologies automate toll transactions, enhance efficiency, and reduce congestion, significantly improving the driving experience.
Technology Employed for Electronic Toll Collection
Advantages
Limitations
Proposed Changes for a Seamless Process
Potential Hazards of the Transition
Conclusion
The evolution of electronic toll collection technologies promises to enhance highway travel efficiency and reduce costs. However, addressing potential risks, such as cybersecurity threats and equitable access, is crucial for ensuring that ETC systems remain inclusive and reliable for all road users.
See lessHow is technology reshaping drug development and manufacturing in India's pharmaceutical industry?
Introduction The Economic Survey 2022-23 ranks India at number three worldwide as top pharmaceutical producer and number fourteen nationwide while also being listed at fourteen. As the worldwide leader in pharmaceutical production India uses technology advancements to develop and make medication treRead more
Introduction
The Economic Survey 2022-23 ranks India at number three worldwide as top pharmaceutical producer and number fourteen nationwide while also being listed at fourteen. As the worldwide leader in pharmaceutical production India uses technology advancements to develop and make medication treatments faster and safer for everyone.
Body
Through advanced technology medical researchers can produce better medicines at speedier efficiency while protecting patient safety.
1. The combination of AI systems and Machine Learning tools transforms how medicine gets developed and made.
Computer programs and artificial intelligence identify more effective medicine candidates by scanning everything with extraordinary speed.
– Example: Peptris Technologies uses AI/ML technology to speed drug development while reducing production expenses.
2. Gene Editing
Through CRISPR technology researchers make targeted genome changes to develop precise medical solutions.
– Example: Through CRISPR technology Intas Pharmaceuticals develops advanced gene treatments that help patients live better with genetic diseases.
3. Personalized Medicine
Modern DNA analysis systems enable physicians to design therapy plans according to each patient’s personal genetic makeup.
– Example: MedGenome studies patient DNA results to help cancer doctors find treatments that work best with each person’s genetic makeup.
Medicine producers must employ cutting-edge technological equipment.
1. Blockchain
Through authenticated records Blockchain keeps drugs safe throughout their lifespan including validation of manufacturing source and expiration deadlines.
– Example: MedSecure follows blockchain technology throughout the drug journey to track products while keeping official product information safe.
2. Internet of Things (IoT)
The Internet of Things oversees manufacturing stages to help make better products and keep production running smoothly.
3. Businesses can operate Robotic Process Automation technology to support their operations.
Robots pack standard products faster than humans while maintaining error-free results.
4. 3D Printing
To treat conditions better 3D printers assist in manufacturing drugs that provide patients with customized care plans.
Conclusion
Technology is playing a transformative role in India’s pharmaceutical industry, from accelerating drug discovery to revolutionizing manufacturing processes. By embracing innovations such as AI, blockchain, and 3D printing, India is poised to strengthen its position as a global pharmaceutical leader. Technological adoption not only enhances efficiency and safety but also aligns with the industry’s vision of delivering high-quality, affordable medicines to the world.
See lessThe United Nations has declared 2025 as the International Year of Quantum Science and Technology. Which technologies currently in use are based on quantum mechanics? Additionally, what measures is India taking in the field of quantum science and technology?
The United Nations has proclaimed 2025 as the International Year of Quantum Science and Technology (IQSAT) — a landmark decision underscoring the influence of quantum science and technology in all aspects of our lives. This initiative is designed to foster international cooperation, to expedite reseRead more
The United Nations has proclaimed 2025 as the International Year of Quantum Science and Technology (IQSAT) — a landmark decision underscoring the influence of quantum science and technology in all aspects of our lives. This initiative is designed to foster international cooperation, to expedite research activities, and to improve public understanding of the many applications and advantages attributable to quantum mechanics. On the eve of such a momentous event, it is important to comprehend the existing technologies that use quantum principles and how India has taken the stride in this domain.
Quantum Mechanics Based Technologies
Quantum mechanics : One of the two pillars upon which modern physics rests — describes how matter and energy behave at the tiniest scales. For instance, in the past few decades, a lot of revolutionary technologies are devised based on this theory that do exist and function in present time. Some highlights worth mentioning are:
Quantum Computing: Compared to the traiditonal computers that use (0s and 1s) to work, quantum computers use quantum bits or qubits which can be in more than one state simultaneously. This property, known as superposition, means quantum computers can solve complex problems far faster than classical machines. IBM, Google, D-Wave, and other pioneers lead the quantum computer research and development charge, and potential applications could be realized in cryptography, pharmaceutical development, and alternative investment analysis.
Quantum Cryptography: Quantum key distribution (QKD) enables two parties to generate a shared, secret random key. Due to the nature of quantum entanglement, quantum key distribution means that any attempt to access the information will almost instantaneously be detected, which makes it virtually impossible for a hacker to hack into your system. This brand-new tech has already found its application in secure communications — and especially this high-stakes application, among government and military actors.
Q-sensors: Q-sensors use quantum properties to create a sensor that is sensitive beyond any classical sensor and can measure minute changes in physical properties like temperature and magnetic and gravitation fields. Applications range from navigation systems, to medical imaging, environmental monitoring, etc. GPS technology, for example, depends on atomic clocks, and atomic clocks are based on quantum principles.
Quantum Metrology: QC-M strategy has well framed resolutions to achieve better precision and sensitivity as compared to classical methods, hence find their great number of applications, where precision measures play a vital role in our Universe, like Big Bang, where high accuracy measurements hold they key to our knowledge.
Quantum Imaging: Quantum imaging methods, such as ghost imaging, utilize the correlations between entangled particles for producing images with a higher resolution and less light exposure. In a medical imaging context, this is employed to prevent injuring delicate tissues.
This limits the properties of certain materials at different temperatures. Significant examples are superconductors, which transport electricity without loss, and topological insulators, which are able to conduct electricity only on their surfaces. Quantum materials are a promising area for regions focused on energy, electronics and advanced manufacturing.
Overview of India’s initiatives for achieving excellence in quantum science and technology Together with a number of research organizations, the government is already investing heavily in the development of quantum r&d. Here are some headline initiatives:
The National Mission on Quantum Technologies and Applications (NM-QTA) is a comprehensive initiative aimed at advancing quantum research and development efforts, launched in 2020. There is good financial backing for this mission, with approximately €1.2 billion (~ $1.4 billion) allocated over five years in the Forschungsmission.” It specifically objects in key areas like quantum computing, cryptography, communication, and material sciences.
Cloud-Based Quantum Computing: Munjal from IBM pointed towards the initiative taken the Indian government for launching quantum computing cloud services for researchers and academic institutions in collaboration with the technology giant. It offers the necessary resources for quantum computing practitioners, enabling researchers to develop quantum algorithms and their applications quickly.
Creation of Quantum Research Centers: Prominent Indian institutions like the Indian Institute of Science (IISc), Indian Institute of Technology (IIT) Delhi, and the Tata Institute of Fundamental Research (TIFR) have established dedicated quantum research centers. This is sure to fuel innovation in this exciting field as these centers draw in exceptional talent and promote interdisiplinary collaboration.
Partnerships: India aims at cooperative projects for global progress in quantum science and technology. One such notable endeavor is the Indian Space Research Organisation (ISRO) which is working with some partners in the Canadian region, along with other beneficiaries across Europe, on the goal of developing quantum communication systems with the capability to tremendously enhance the security of communications in outer space.
India gives numerous workshops and conferences on quantum technologies to understand and interact. These meetings bring together specialists worldwide to discuss the latest developments and future directions of this field.
Education and Training: Recognizing the need for a skilled workforce, Indian universities are embedding quantum science and technology education in their curricula. Specialized programs and courses are being developed to prepare the next generation of quantum scientists and engineers.
Industry-Linked Programs: The Indian government is focusing on industry linkage to market quantum and enable conglomerates to support academic research. While partnerships with major corporations like IBM, Google, and innovative local start-ups play a big role in bridging the gap between theoretical research and the real world.
Coclusion:
The 2025 International Year of Quantum Science and Technology calls global recognition of the profound impact quantum mechanics can have across diverse sectors of society. India is emerging as a key player in this sector through dynamic initiatives and partnerships. As the world readies itself to commemorate this significant achievement, in all its forms including quantum computers, the advancements achieved in quantum technologies will promise to unveil new wonders in computing, communication and materials, heralding a new and unprecedented wave of innovation and initiative.
See lessWhat is meant by the 'Advanced Nuclear Energy for Enriched Life (ANEEL)' technology? Highlight its main advantages. (200 Words)
Model Answer The Advanced Nuclear Energy for Enriched Life (ANEEL) is an innovative nuclear fuel technology that combines Thorium and High Assay Low Enriched Uranium (HALEU). HALEU refers to uranium enriched such that the concentration of the fissile isotope uranium-235 (U-235) ranges between 5% andRead more
Model Answer
The Advanced Nuclear Energy for Enriched Life (ANEEL) is an innovative nuclear fuel technology that combines Thorium and High Assay Low Enriched Uranium (HALEU). HALEU refers to uranium enriched such that the concentration of the fissile isotope uranium-235 (U-235) ranges between 5% and 20%, making it more efficient for nuclear reactors. This technology has significant implications for the future of clean energy and nuclear power.
Main Advantages of ANEEL Technology
ANEEL can be seamlessly integrated with existing Pressurized Heavy-Water Reactors (PHWRs), a core part of India’s nuclear power infrastructure. This compatibility ensures that the technology can be adopted without requiring new reactor designs, simplifying its implementation.
India has vast reserves of Thorium, and ANEEL utilizes this resource along with HALEU. This reduces India’s dependence on imported uranium, which has been a major concern for energy security. India’s Thorium reserves are the largest in the world, and utilizing them will enhance national energy independence.
ANEEL offers significantly higher fuel efficiency. For example, ANEEL fuel can achieve a burn-up rate of 60,000 MW-days per tonne, compared to only 7,000 MW-days per tonne for conventional uranium fuel in PHWRs. This means that ANEEL fuel lasts longer and produces more energy from the same amount of material.
Due to the longer life cycle of ANEEL fuel and fewer bundles needed for replacement, the technology leads to substantial cost savings in terms of fuel transportation and disposal of spent fuel. A PHWR using ANEEL requires only one bundle replacement daily, compared to eight with traditional uranium.
The higher burn-up rate of ANEEL results in a significant reduction in nuclear waste, with a reduction of over 80% in waste generation. This makes ANEEL a more environmentally friendly option compared to conventional nuclear fuels.
As a zero-carbon fuel, ANEEL supports India’s target of achieving net-zero emissions by 2070. India’s Thorium reserves alone could sustain this technology for over a century, providing a long-term, sustainable solution for clean energy generation.
ANEEL fuel is incompatible with nuclear weapons production, making it a safer choice from a proliferation standpoint. This adds to nuclear security and enhances confidence among international uranium suppliers.
In conclusion, ANEEL technology offers economic, environmental, and security benefits, positioning it as a promising solution for clean, sustainable, and energy-secure nuclear power.
See lessWhat are smart materials? Evaluate their potential in addressing global challenges in energy efficiency, healthcare, and environmental sustainability. (200 Words)
Smart materials are an advanced class of materials that belong to the cutting edge of materials science which can respond and adapt to the external stimuli received, such as changes of temperature, effect of light, pressure or electric field. One end of the spectrum has such advanced materials thatRead more
Smart materials are an advanced class of materials that belong to the cutting edge of materials science which can respond and adapt to the external stimuli received, such as changes of temperature, effect of light, pressure or electric field. One end of the spectrum has such advanced materials that are inspired by functional organisms in nature that can play such roles very accurately and efficiently. Currently, many scientists, engineers, and policymakers around the world are recognizing the applications of smart materials for tackling some of the biggest challenges facing the planet today from energy utilization, through medical advancements, to care for the environment. To know more about Smart Materials and Its types?
Smart materials (also known as responsive or intelligent materials, in some contexts) are a class of materials that can alter their properties or behaviors in reaction to external stimuli. There are a few key types they sort into:
Volume Memory Alloys (VMA): These materials can return to their previous structure after being deformed once in contact with certain temperature 영역.
Piezoelectric Materials: Create electrical charge when these are mechanically deformed and can deform when an electric field is applied.
Electroactive Polymers (EAPs), which are polymers that deform upon the induction with an electric field.
Thermochromic Materials: Materials that shift color depending on their thermal condition.
Photochromic Materials: Change colors in response to light.
Self-Healing Materials: These materials possess the ability to self-repair autonomously, enhancing durability and minimizing waste.
Energy Efficiency Smart materials are known for their amazing potential in improving energy efficiency in different sectors. The properties of shape memory alloys can be helpful for construction to create designs, which are more resilient and adaptive to external loads. These materials could create window frames that change shape automatically, optimizing for sunlight absorption, and reducing reliance on artificial lighting and heating systems. Likewise, piezoelectric materials can convert the mechanical vibration of structures like bridges and buildings into sustainable electrical energy. In the automotive realm, they can improve fuel economy and reduce emissions. Lets vehicles thermoregulate via air circulation routes with the suspension of air conditioning to save energy at the thermoregulation – vehicle exterior interface with use of thermochromic materials Furthermore, self-repairing materials can extend the life of components, reducing the frequency of replacement and their associated environmental impact. Healthcare The healthcare sector has a lot to benefit from the use of smart materials. In medical equipment, piezoelectric materials help create more accurate and responsive sensors, leading to better diagnosis accuracy and patient management. Wearable devices embedded with piezoelectric sensors could accurately monitor vital statistics and identify health issues early. Shape memory alloys are currently used in surgical tools and stents, which are inserted into the body in a compact form but expanded to their operational size when heated. By reducing invasion in surgical procedures, this approach also improves patient recovery. Also, scientists are exploring electroactive polymers for use in artificial muscles that could revolutionize prosthetics and rehabilitation technologies by allowing movement that is more natural and efficient.
Eco-Friendly Innovation Smart materials play a crucial role in promoting eco-friendly practices. When it comes to water purification, such adaptive materials can create tunable filters that can change as the pollutants differ, making water treatment processes more effective. Some materials, for example, change their pore size in response to different pH levels, enabling us to selectively attract and remove toxic heavy metals and other pollutants from water supplies. Self-repairing materials in waste management means lesser frequent repairs and replacements, resulting in reduced waste generation ultimately. These novel materials can also be manufactured to degrade in specific conditions, reducing their environmental impact. Also, devices that are temperature-sensitive, like thermochromic and photochromic materials/functions, can be used in energy-smart designs, such as smart light windows which adjust their transparency as per indoor conditions to keep the environment comfortable, reducing heating and cooling needs.
Challenges and Future Directions The potential of smart materials is evident, but to realize their promise there are many challenges that need to be addressed. Some of the key challenges in this space are high manufacturing costs, the need for further research to improve their performance, and developing scalable manufacturing processes. It’s also critical to evaluate the environmental impact of both the construction and decommissioning of these materials to ensure they meet sustainability goals.
Still, the future for smart materials is promising. Ongoing research and technological advances are making these materials increasingly economically viable and cost-effective. The collaborative efforts across disciplines—uniting experts in materials science, engineering, biology, and chemistry—are spurring innovation and broadening their capabilities. These materials in development will, when applied, help address some of the highest order challenges facing the world today.
So in conclusion, smart materials represent a dramatic shift in materials science, combining unique properties and functions that establish their promise to contribute to the UN others Sustainable Development Goals on energy, healthcare, and the environment. These materials also contribute to reduced energy consumption in buildings and transportation, enhanced medical diagnostics and therapeutics, improved water purification techniques, and minimized waste. The applicability of intelligent things is diverse and it is influential. With the evolving ambit of research and innovation within this domain, the application of these materials among varied sectors shall certainly boost productivity along with contributing toward a greener and sustainable future.
See lessThe Nobel Prize in Physics of 2014 was jointly awarded to Akasaki, Amano, and Nakamura for the invention of Blue LEDs in the 1990s. How has this invention impacted the everyday life of human beings? (250 words) [UPSC 2021]
Introduction The Nobel Prize in Physics 2014 was awarded to Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura for their groundbreaking work on the invention of Blue LEDs in the 1990s. This innovation has had a profound impact on everyday life by revolutionizing lighting technology and beyond. RevolutRead more
Introduction
The Nobel Prize in Physics 2014 was awarded to Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura for their groundbreaking work on the invention of Blue LEDs in the 1990s. This innovation has had a profound impact on everyday life by revolutionizing lighting technology and beyond.
Revolutionizing Lighting
Blue LEDs are crucial for the development of White LEDs. By combining blue LEDs with red and green LEDs, white light is produced efficiently. This innovation has led to a significant shift from traditional incandescent and fluorescent lighting to more energy-efficient LED lighting. For instance, LED bulbs now dominate residential and commercial lighting due to their energy efficiency, longer lifespan, and lower heat emission. This shift has contributed to substantial reductions in electricity consumption and associated costs.
Environmental Impact
The adoption of LED lighting has had a positive environmental impact. LEDs consume about 80% less energy compared to incandescent bulbs and have a significantly longer life, reducing waste and the frequency of replacements. For example, cities like New York have transitioned to LED streetlights, leading to a 50% reduction in energy consumption and lowering greenhouse gas emissions.
Advancements in Technology
The technology behind blue LEDs has also enabled advancements in display technologies. LED screens in smartphones, televisions, and monitors offer better color accuracy, higher brightness, and energy efficiency compared to older display technologies. For instance, OLED TVs and smartphones utilize advanced LED technologies for high-resolution displays and improved user experiences.
Medical and Scientific Applications
In addition, blue LEDs are used in medical treatments and scientific research. They are employed in phototherapy for skin conditions and in fluorescence microscopy, enhancing imaging techniques in biological research.
Conclusion
See lessThe invention of Blue LEDs has transformed everyday life by improving lighting efficiency, reducing environmental impact, advancing display technologies, and contributing to medical and scientific fields. The continued innovation and adoption of LED technology underscore its profound and ongoing influence on modern society.
Scientific research in Indian universities is declining, because a career in science is not as attractive as are business professions, engineering or administration, and the universities arc becoming consumer-oriented. Critically comment. (200 words) [UPSC 2014]
Introduction: Scientific research in Indian universities has witnessed a decline over the years. This trend is concerning, especially as the country aims to become a global leader in innovation and technology. Several factors contribute to this decline, including the lack of attractiveness of a careRead more
Introduction: Scientific research in Indian universities has witnessed a decline over the years. This trend is concerning, especially as the country aims to become a global leader in innovation and technology. Several factors contribute to this decline, including the lack of attractiveness of a career in science compared to business, engineering, or administration, and the consumer-oriented shift of universities.
Lack of Attractiveness in Scientific Careers:
Consumer-Oriented Shift in Universities:
Conclusion: The decline in scientific research in Indian universities is a multifaceted issue rooted in inadequate funding, low career incentives, and a consumer-oriented education model. To reverse this trend, there is a need for increased investment in research, better industry-academia collaboration, and policies that make scientific careers more attractive. Only by addressing these challenges can India strengthen its scientific base and contribute meaningfully to global innovation.
See lessQuantum technology can play a key role in driving economic growth and improving the lives of people. Discuss. Also, enumerate the associated challenges.
Answer: Quantum technology is an emerging field of physics and engineering powered by the principles defined by quantum mechanics. Quantum mechanics is a subfield of physics that explains the nature and behavior of matter and energy on the atomic and subatomic levels. Currently, the technological deRead more
Answer: Quantum technology is an emerging field of physics and engineering powered by the principles defined by quantum mechanics. Quantum mechanics is a subfield of physics that explains the nature and behavior of matter and energy on the atomic and subatomic levels. Currently, the technological developments in this field are in nascent stages but have huge potential with widespread applications. It can play a key role in driving economic growth and improving the lives of people as given below:
However, there are some challenges associated with quantum technology as given below:
Despite the challenges, quantum technology has the potential to accelerate development in India. However, entrepreneurship, innovation, training programs, and consulting in quantum technology will be crucial to developing a knowledge ecosystem and bridging the skill gap. This will lead to the creation of a dedicated quantum community in India, capable of collaborating with researchers and industry professionals worldwide.
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