Tag Archives: #indianscience

The Changes After 1991 In India

Today India is one of the most powerful nations in the world. Our progress in education, science-technology, business, economy, the defense system is really noticeable. India is always a unique country but India also passed many tough situations, this achievement comes after so many hardships, struggles, and fights.before 1991 the political situation in India is unstable, after 1991 certain changes in the Indian economy, science-technology held to be very important In the history of India.

Indian Economy: we wanted to establish an Economy based on social justice through planning for a National planning commission was established that would coordinate development through the policy of the Five Year Plan. The government started Economic Reforms are called as Economic Liberalisation. The foreign Invest In India increased, the field of information technology opened several avenues of employment in the country . Liberalization, Privatizati, and Globalization, India under its New Economic Policy approached International Banks for development of the country. These agencies asked Indian Government to open its restrictions on trade done by the private sector and between India and other countries.

Science and Technology: The experiment in the co-operative dairy movement By Dr.Verghese Kurien led to increase in milk production in India. This is called as White Revolution. Dr.Homi J.bhaba laid the foundation of the Indian atomic Power Programme. India insisted on using atomic energy for peaceful purposes like generation of electricity, pharmaceuticals and defense.

Change In Social Field: changes related to the women empowerment movement and other related to the policies regarding the uplift of deprived sections of the society

Patent for ISRO protective garment for human spaceflight

Another feather adds to the ISRO crown. ISRO has got an Indian patent for its liquid cooling and heating garment suitable for the space Application. The patent is valid for 20 years from the date of application that is, February 8, 2016, and was granted on June 19. while ISRO is a patent owner, the four investors are Srirangam Siripothu, Reshmi Balachandran, Saraswati Kesava Pillai Manu, and Gurumurthy Chandrasekaran.

Spacesuit

The garment is made of biocompatible Fabrics and parts which help maintain comfortable body temperature. According to ISRO the garments has superior heat transfer efficiency and can be conveniently used for maintening the body temperature of the wearer at levels suitable for the physiological performance require. The outer and Inner Layer of the garment are separated by plurality of tubes configured to exclusive a heat transfer fluid

The 1600 Year Old Rust Free: The Iron Pillar of Delhi

An unsolved mystery, the IRON PILLAR OF DELHI now standing at Quwwatul mosque at Mehrauli in Delhi, India. The 7.21 meters tall structure all most 1600-year-old stands completely rust-free. The pillar was constructed by “King Chandra” probably Chandragupta2

Iron Pillar Of Delhi

pillar was certainly used as a trophy in building the Quwwat-ul-Islam mosque and the Qutb complex, its original location, whether on the site itself or from elsewhere, is debated. The Iron pillar of Delhi is one of the most curious metal objects in the world. It was manufactured by the forge welding of pieces of wrought iron. In a report published in the journal Current Science, R. A critical corrosion-resistant agent called iron hydrogen phosphate hydrate makes the pillar resistant to rusting.

Experts at the Indian Institute of Technology have resolved the mystery behind the 1,600-year-old iron pillar in Delhi, which has never corroded despite the capital’s harsh weather.
Metallurgists at Kanpur IIT have discovered that a thin layer ofmisawite“, a compound of iron, oxygen and hydrogen, has protected the cast iron pillar from rust.

The pillar bears an inscription which states that it was erected as a flagstaff in honor of the Hindu God and in the memory of the Gupta King Chandragupta II (375-413). How the pillar moved to its present location remains a mystery.

The question remains that how was such chemically advanced agent manufacture 2000 ago.

The pillar is a living testimony to the skill of metallurgists of ancient India

Indian Scientists Create ‘Black Gold’ to Boost Solar Power, Make Seawater Potable!

Scientists at the Mumbai-based Tata Institute of Fundamental Research (TIFR) used gold nanoparticles and, by rearranging size and gaps between them, developed a new material which has unique properties like the capacity to absorb light and carbon dioxide.

one of the largest consumers of the precious metal globally. Now Indian scientists have tinkered with the chemistry of the material and turned it into ‘black gold’ which they say has the potential to be used for applications ranging from harvesting solar energy to desalinating seawater.

Scientists at the Mumbai-based Tata Institute of Fundamental Research (TIFR) rearranged the size and gaps between gold nanoparticles to develop a new material which has the unique properties of absorbing light and carbon dioxide. Gold does not have these properties. In appearance the new material is black, hence the name ‘black gold.

While speaking to India Science Wire, Vivek Polshettiwar, who led the research team, explained, “We have not doped gold nanoparticles with any other material or added other materials. We varied inter-particle distance between gold nanoparticles using a cycle-by-cycle growth approach by optimizing the nucleation-growth step, using dendritic fibrous nanosilica whose fibers were used as the deposition site for gold nanoparticles.”

One of the most fascinating properties of the new material is its ability to absorb the entire visible and near-infrared region of solar light. It does so because of inter-particle plasmonic coupling as well as heterogeneity in nanoparticle size. Black gold could also act as a catalyst and could convert carbon dioxide into methane at atmospheric pressure and temperature using solar energy.

“If we develop an artificial tree with leaves made out of black gold, it can perform artificial photosynthesis, capturing carbon dioxide and converting it into fuel and other useful chemicals,” added Prof Polshettiwar. The efficiency of conversion of carbon dioxide into fuel, at present, is low but researchers believe it could be improved in future.

In order to study the new material’s ability to harvest solar energy, researchers dispersed it into water and exposed the solution to light for one hour and the temperature of the solution was measured. The temperature of the solution, with pure silica spheres, rose to 38 degrees while the ones with different concentrations of black gold rose to 67 to 88 degrees. The maximum increase in temperature was attributed to creation of thermal hotspots due to the heterogeneity of the particle sizes as well as optimum inter- particle coupling.

Researchers said the material can be used as a nano-heater to covert seawater into potable water with good efficiency. “Our results indicate the potential application of black gold in purification of seawater to potable water via steam generation using solar energy under atmospheric reaction conditions.”

The research team included Mahak Dhiman, Ayan Maity, Anirban Das, Rajesh Belgamwar, Bhagyashree Chalke and Vivek Polshettiwar (TIFT); Yeonhee Lee, Kyunjong Sim and Jwa-Min Nam (Seoul National University).

The study was funded by the Department of Science and Technology (DST) and the Department of Atomic Energy (DAE).

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