India's contribution to Science and Technology

shankarosky

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nano composites are likely to see a wide variety of defense related application once it can be made in industrial scale .The biggest advantage of these type of materail is it can be tailored to meet a specific need from aerospace components to flak jackets of a soldier to gun barrels -the range is limitless .
more specifically it will make the aircraft fly faster with same engine power or make a submarine sink deeper without going for a very heavy pressure hull thereby making it more easily defensible in an underwater combat
 

ajay_ijn

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Hundreds of fossilized dinosaur eggs dug up in Tamil Nadu
India's Jurassic nest dug up in Tamil Nadu - India - NEWS - The Times of India
COIMBATORE: Geologists in Tamil Nadu have stumbled upon a Jurassic treasure trove buried in the sands of a river bed. Sheer luck led them to hundreds of fossilized dinosaur eggs perhaps 65 million years old, underneath a stream in a tiny village in Ariyalur district.

Researchers from the Salem-based Periyar University found clusters of eggs of what they believe to be the most aggressive Carnosaur and the docile, leaf-eating Sauropod at Sendurai village.

While Carnosaurs were large predatory dinasaurs, Sauropods were long-necked, herbivores which grew to enormous heights and sizes.

That dinosaurs once roamed the area was known from the fossils found there on earlier expeditions. But this is the first time that hundreds of nests embedded with hundreds of clusters of dinosaur eggs have been unearthed in the district.

Located on the highway between Chennai and Tiruchi, the Ariyalur and the neighbouring Perambalur geological sites nestle in the northern plains of the Cauvery river. The place is a veritable museum of ancient organisms, dating back to 140 million years. Ever since a British couple -- the Wines -- collected 32 boxes of "strange stone objects" in 1843, the Ariyalur region has drawn geologists from across the world for its rich fossil presence and diversity.

Scientists have found the tiniest marine algae or the nano fossils besides the rare shell-like bivalve, gastropoda, telecypoda and brachiopoda in the geological sites spread across 950sqkm in Ariyalur and Perambalur districts.

"We found clusters and clusters of spherical eggs of dinosaurs. And each cluster contained eight eggs," says Dr M U Ramkumar, geology lecturer of the Periyar University. Each egg was about 13 to 20 cm in diameter and they were lying in sandy nests which were of the size of 1.25 metres.

In the 1860s, a British geologist first recorded the presence of bone remains of dinosaurs in Ariyalur. Over a century and a half later, the egg of a dinosaur was found in a cement factory of the state-owned Tamil Nadu Cements Ltd in 1990s. But officials realized that it was a dinosaur egg only 10 years later.

On a sultry afternoon on September 12 this year, Ramkumar and his research students went to Ariyalur to scour the rocks and sediments as part of a study funded by Indian and German scientific institutions. As they paused by a stream on a grazing land at Sendurai, they found spherical-shaped fossils peeping out of the sand beds. "We got really excited. As I have seen a dinosaur egg, I was sure these were dinosaur eggs," said Ramkumar.

A quick digging revealed clusters of eggs beneath seven layers of sand spread over two sqkm. The eggs may not have hatched due to the Deccan volcanic eruptions or seasonal flooding, surmise the team. "We suspect the extinction of dinosaurs was triggered by the Deccan volcano. Volcanic ashes cap the eggs," said one researcher.

"This is a very significant finding as never before have we found so many dinosaur eggs in the country. Besides the spherical size of the eggs covered with sand and volcanic ash provide significant insight into the possible reasons for extinction of the species," says Dr Jyotsana Rai, senior scientist, Birbal Sahni Institute of Paleobotany in Lucknow. Her team will collect samples of these eggs to determine its exact age.

Because a similar discovery in Jabalpur led to a plunder of the fossilized treasure, the researchers have requested the Ariyalur district administration to cordon off the site. Samples of the eggs will travel to Germany for further research. The vicinity of Jabalpur in Madhya Pradesh is considered the richest dinosaur field in the country.
 

nitesh

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cross posting

Strategic national producer Midhani on high growth curve

“Despite the sanctions,” says Chairman and Managing Director (CMD), K Narayana Rao, “Midhani today manufactures the world’s best maraging steel, a critical component in nuclear reactors, fuel enrichment centrifuges, missiles and space rockets. The Indian Space Research Organisation’s GSLV rockets are clad in Midhani’s maraging steel.”

Such breakthroughs in strategic materials have placed Midhani in an unusual position. With international sanctions still in place, Midhani has joined one of the world’s most challenging, futuristic and expensive projects: The International Thermonuclear Experimental Reactor, or ITER, a $10 billion, multinational project that aims to generate electricity through nuclear fusion by 2018. India joined the project in 2005.

“We have produced a material called Low Activation Ferretic Martinsitic Steel, which the ITER project urgently needs”, explains a Midhani scientist. “This steel must have very low activation, allowing it to be placed in a highly radioactive environment (e.g. inside a reactor) without becoming highly radioactive itself. The ITER authorities are presently evaluating it at the Institute of Plasma Research in Gandhinagar.”
 

NSG_Blackcats

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Tata Group launches water purifier for the masses

At about two feet tall, it may turn out to be the world’s most compact revolution: The Tata Swach, launched on Monday, is a water purifier priced for the masses, which India’s Tata Group hopes will help save the lives of millions of people who die each year of waterborne diseases.

“This is opening up a complete new market,” said R. Mukundan, managing director of Tata Chemicals Ltd.

The Tata Swach - Hindi for “clean” - meets U.S. Environmental Protection Agency standards, doesn’t require running water, electricity, or boiling and is priced so that the mass of rural Indian consumers can afford it, executives said.

Group chairman Ratan Tata, is scheduled to announce the sale price later Monday.

The water filter grew out of a decade of research and development, led by three different companies in the Tata Group. Tata is one of India’s largest conglomerates, making everything from table salt to Jaguar automobiles - as well as the ultra-cheap Nano compact car, which like the Swach filter targets a lower income rural market many companies have ignored.

The dire statistics about the human cost of unsafe water are well known. The Swach, a pet project of Ratan Tata, is the group’s bet that the private sector can offer a better, consumer-based solution to one of the world’s most persistent health problems than most governments in the developing world can.

Each filter for the Tata Swach, which is packaged as a 19-litre, teal and white plastic box, has a lifespan of 3000 litres - about enough to provide a family of five drinking water for a year.

The filter uses paddy husk ash as a matrix, bound with microscopic particles of silver to kill the bacteria that cause 80 percent of waterborne disease, executives said.
 

Sridhar

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India develops affordable nano sensors to detect heart attack


2010-01-06 16:10:00

A team of Indian scientists and engineers has developed affordable sensors using nano materials to detect a heart attack quickly.
'The device with nano sensors can not only detect a heart attack, but also transmit its signal through a wireless interface to doctors located remotely for quick diagnosis and treatment,' Indian Institute of Technology (IIT-Mumbai) professor V. Ramgopal Rao said Wednesday.

Rao told delegates at the 97th Indian Science Congress here that the prototype would soon be introduced as a portable device in the market to help thousands of people prone to sudden cardiac disease wear it and carry on with their lives.

'The three-dimension sensors use nano electrical mechanical system (NEMS) of its polymer material to convert any abnormal movement in the heart muscles into an electrical signal for detecting a cardiac symptom,' Rao said at a plenary session on 'Nano Technology and Education' at the country's premier science event.

The team has built a cantilever in the sensor using tiny or nano-particles of the polymer to measure the stress symptom (myocardial infarction) in the heart and convert it into an electrical signal.

Nano-particles, measured as one billionth of a metre (39 inches), in a polymer generate electrical current through biochemical process of the enzymes produced in the heart.

The department of electrical engineering at IIT Mumbai took up the project in 2007, with funding from multiple agencies to develop affordable sensors for early detection of heart disease.

'When the heart goes through severe stress or strain, it suddenly releases enzymes (protein molecules) in excess, causing pressure on its blood vessels and exertion, which manifest as chest pain, perspiration or even a cardiac arrest.

Heart attacks, a cardiac disease, are on the rise in India owing to improper food habits and sedentary lifestyle of the people, especially in urban areas and hazardous occupations causing stress and strain.

According to a recent study by Medwin Heart Foundation, a health organisation based in Hyderabad, about 60 percent of heart diseases worldwide are likely to occur in India by this year-end.

'With so many Indians prone to heart diseases irrespective of age and gender, the portable device will enable cardiac diagnosis affordable and quick as against multiple and expensive tests carried out presently using conventional methods,' Rao noted.

The study also revealed that half of all heart attacks across the country occur to people below 50 years and 25 percent under the age of 40 due to unhealthy diet, smoking, chewing tobacco, physical inactivity and changing lifestyle of the growing urban populace.



India develops affordable nano sensors to detect heart attack
 

nitesh

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The Telegraph - Calcutta (Kolkata) | Jharkhand | ISM scientist creates ‘cyclone’

Dhanbad, Jan. 14:An ISM scientist has developed a “cyclone” that can disintegrate even the finest impure particles clinging to raw coal.

Nikkam Suresh, the head of the fuel and mineral engineering department, has designed a “dense medium cyclone”, an equipment for use in coal washeries, after two years of rigorous research with engineers of Weir Minerals, the world leader in design and manufacture of processing equipment.

Recipient of a number of awards, including the national mineral award from the Union ministry of coal in 2002 and the distinguished teacher award 2000, Suresh is now filing for a patent right along with Weir Minerals.

The new equipment is an improved version of existing cyclones that are made of hard materials. The new version has 28 times more resistibility than the older cyclone and boasts of a longer life span.

The equipment is expected to limit, if not end, India’s dependence on foreign suppliers. The device will also come in handy for the steel industry as it would help cleansing coal of impurities.

Suresh, who has also won the Arti Bhatnagar award in 1996 instituted by Mining Geological and Metallurgical Institute of India, Calcutta, said: “The equipment can wash impurities as fine as 3mm or below”.

Recently conferred the coal benefaction award at an international conference in Jamshedpur, Suresh lamented that more and more open cast mines were leading to bulk production, but the quality of coal had suffered.

“I hope my equipment will help procure high quality coal and benefit allied industries and the country as a whole,” he added.
 

ppgj

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coss posting...

Indian researcher extracts rare earth raw materials from industrial wastes

23 January 2010


Animesh Jha

Competition over raw materials for new green technologies could become a thing of the past, thanks to a discovery by scientists from the University of Leeds

Researchers from Leeds' Faculty of Engineering have discovered how to recover significant quantities of rare-earth oxides, present in titanium dioxide minerals. The rare-earth oxides, which are indispensable for the manufacture of wind turbines, energy-efficient lighting, and hybrid and electric cars, are extracted or reclaimed simply and cheaply from the waste materials of another industrial process.

If taken to industrial scale, the new process could eventually shift the balance of power in global supply, breaking China's near monopoly on these scarce but crucial resources. China currently holds 95 per cent of the world's reserves of rare earth metals in a multi-billion dollar global market in which demand is growing steadily.

"These materials are also widely used in the engines of cars and electronics, defence and nuclear industries. In fact they cut across so many leading edge technologies, the additional demand for device related applications is set to outstrip supply," says Professor Animesh Jha, professor of applied materials science in the School of Process, Environmental and Materials Engineering, who led the research at Leeds.

Rare earth metals are a group of 15 chemically similar elements, grouped separately in the periodic table, known as lanthanides. Their unique properties - catalytic, chemical, electrical, metallurgical, nuclear, magnetic and optical - have led to their use in an extraordinarily wide range of applications, including: automotive catalysts; flints for lighters; pigments for glass and ceramics; compounds for polishing glass; miniature nuclear batteries; superconductors and miniature magnets.

Rare earth metals are also important in the defence industry, where their application includes: anti-missile defence, aircraft parts, communications systems, electronic countermeasures, jet engines, rockets, missile guidance systems and space-based satellite power.

"There is a serious risk that technologies that can make a major environmental impact could be held back through lack of the necessary raw materials - but hopefully our new process, which is itself much 'greener' than current techniques, could make this less likely," says Profesor Jha, who did his BE from Roorkee and ME from Bangalore, before acquiring a PhD, DIC from the Imperial College in London.

His 28 years of expertise encompasses environmental aspects of materials processing for metals and alloys and minerals. He also specialises in glass science especially for rare-earth containing laser materials.

Despite their name, the 15 rare earth metals occur more commonly within the Earth's crust than precious metals such as gold and platinum, but their oxides are rarely found in sufficient concentrations to allow for commercial mining and purification. They are, however, found relatively frequently alongside titanium dioxide - a versatile mineral used in everything from cosmetics and medicines to electronics and the aerospace industries, which Professor Jha has been researching for the last eight years.

The Leeds breakthrough came as Professor Jha and his team were fine-tuning a patented industrial process they have developed to extract higher yields of titanium dioxide and refine it to over 99 per cent purity. Not only does the technology eliminate hazardous wastes, cut costs and carbon dioxide emissions, the team also discovered they can extract significant quantities of rare earth metal oxides as co-products of the refining process.

The amount of rare-earth metal oxides available through Professor Jha's patented process is dependent on the origin of titanium dioxide minerals, and can vary from less than 1 per cent to several per cent.

"Our recovery rate varies between 60 and 80 per cent, although through better process engineering we will be able to recover more in the future," says Professor Jha. "But already, the recovery of oxides of neodymium (Nd), cerium (Ce) and lanthanum (La), from the waste products - which are most commonly found with titanium dioxide minerals - is an impressive environmental double benefit."

The research has been funded by the Engineering and Physical Sciences Research Council (EPSRC), the former DTI's Sustainable Technology Programme and industrial sponsor, Cristal Global in US (formerly Millennium Inorganic Chemicals) through a PhD studentship for team member Graham Cooke.
domain-b.com : Indian researcher extracts rare earth raw materials from industrial wastes
 

nandu

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Cross Posting.

Big Bang's Bangalore link: BEL detectors were a hit with CERN







Team BEL hands over the first prototype module to Dr Anna, Scientist, CERN, Geneva

Bharat Electronics Ltd (BEL) contributed to the Big Bang experiment carried out by the European Organisation for Nuclear Research (CERN) recently. One of India's leading Defense Public Sector Undertakings (DPSU), BEL supplied 32-channel silicon strip sensors to the Large Hadron Collider to detect subatomic particles generated after high-energy particle beams collided. "The BEL-made detectors were placed near the point of collision so as to capture the properties of these particles, thus giving an insight into the aftermath of the Big Bang explosion," I.V. Sarma, BEL's director of research & development, told Aviation Week.

http://tarmak007.blogspot.com/
 

nandu

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India to be part of 'robotic network' on red planet

India has signed a statement of intent with space-faring nations including the US to work on the concept of establishing a "robotic network" on the surface of the Moon to conduct detailed scientific investigations.

Replying to a question in Rajya Sabha, Minister of State for Science and Technology Prithviraj Chavan said the network called 'International Lunar Network' will carry out detailed scientific investigations on the Moon.

"This is an international cooperative effort and will not constitute any binding commitments on the participating nations," he said.

http://www.brahmand.com/news/India-to-be-part-of-robotic-network-on-red-planet/3778/1/12.html
 

ajtr

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New vistas for Indian researchers

Ananya Dutta
KOLKATA: A dedicated beam line for Indian researchers at the Photon factory, a synchrotron, at the High Energy Accelerator Research Organisation (KEK) in Japan has become operational, according to authorities of the Saha Institute of Nuclear Physics (SINP), the nodal institute for the project.

They told The Hindu here that the facility is available to Indian researchers as a result of an agreement signed between the Prime Ministers of the two countries in 2007 and the project is being conducted under the auspices of the Central Department of Science & Technology.

Full capacity next year

"The facility has been set up this month and scientists from several institutes across the country are currently in Japan to conduct their experiments. It will function at full capacity a year from now," said Prof Milan K. Sanyal, Director of SINP.

Currently researchers can apply for beam time at the Raja Ramanna Centre for Advanced Technology in Indore but the access to the synchrotron at KEK will increase the number of students who can avail of the facility, he added.
 

nitesh

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http://www.nytimes.com/2011/07/19/science/19google.html?_r=2

As a budding inventor and scientist, Shree Bose, in second grade, tried to make blue spinach. In fourth grade she built a remote-controlled garbage can. In eighth grade she invented a railroad tie made out of recycled plastic and granite dust, an achievement that got her to the top 30 in a national science competition for middle school students.

In 11th grade Ms. Bose, a 17-year-old in Fort Worth, tackled ovarian cancer, and that research won her the grand prize and $50,000 in the Google Science Fair last week.

For the winning research Ms. Bose looked at a chemotherapy drug, cisplatin, that is commonly taken by women with ovarian cancer. The problem is that the cancer cells tend to grow resistant to cisplatin over time, and Ms. Bose set out to find a way to counteract that.

She found the answer in a cellular energy protein known as AMPK, or adenosine monophosphate-activated protein kinase. She observed that when AMPK was paired with cisplatin at the beginning of treatment the combination diminished the effectiveness of cisplatin. But added later on, when the cancer cells were growing resistant, the AMPK worked to maintain the effectiveness of cisplatin, allowing it to continue killing the malignant cells, at least in cell cultures.

"That opens up a lot of new avenues for research," Ms. Bose said. Her research was supervised by Dr. Alakananda Basu at the University of North Texas Health Science Center in Fort Worth.

More than 10,000 students from 91 countries entered the science fair, which was Google's first. The entries, submitted over the Web, were winnowed down to 60 semifinalists and then 15 finalists who presented their findings to judges at Google's Silicon Valley headquarters last week.

Ms. Bose's research was named best in the age 17-18 category and best of show over all. Her prize includes $50,000 for future college studies, a 10-day trip to the Galapagos Islands and a separate trip to visit the CERN particle physics laboratory in Switzerland.

Girls swept all three age categories in the competition, a contrast to generations past when women were largely excluded from the science world.

"Personally I think that's amazing, because throughout my entire life, I've heard science is a field where men go into," Ms. Bose said. "It just starts to show you that women are stepping up in science, and I'm excited that I was able to represent maybe just a little bit of that." She will start her senior year of high school in the fall.

"At the end, we were like, 'Yeah, girl power!' " said Naomi Shah of Portland, Ore., who won the age 15-16 category with a study of the effects of air quality on lungs, particularly for people who have asthma. Ms. Shah recruited 103 test subjects, performed 24-hour air quality measurements at their homes and workplaces and had each blow into a device that measured the force of their breath.

Lauren Hodge of Dallastown, Pa., won the age 13-14 category for research on whether marinades reduce the amount of cancer-causing compounds produced by the grilling of meat. She found that lemon juice and brown sugar cut the level of carcinogens sharply, while soy sauce increased them.

Vint Cerf, Google's chief Internet evangelist and one of the judges, said that gender did not play a role in deciding the winners. "This was a gender-neutral evaluation of all the work that was done," he said. Nonetheless, "I was secretly very pleased to see that happen," Dr. Cerf said. "This is just a reminder that women are fully capable of doing same or better quality work than men can."

The gender tables are not entirely turned among budding scientists. Nowadays the competitors at science fairs are pretty evenly split between boys and girls, both Ms. Bose and Ms. Shah said, and 9 of the 15 finalists in the Google Science Fair were boys.

"I think that was just, like, pure coincidence," Ms. Shah said of the girls' sweep, "because all 15 finalists had great projects."

Perhaps belying a bit the notion that American students are falling behind in science, the United States dominated the top slots. All three of the winners were American, as were nearly three-quarters of the finalists. About 60 percent of the entries came from Americans.

Dr. Cerf said that a common thread among the finalists was that they had explored science enthusiastically for years with the encouragement of their parents.

For Ms. Bose, it was the blue spinach that got her started. "I actually decided that children didn't want to eat their vegetables because they were green, and so my fantastic idea for the science fair project was to turn a spinach plant blue," she recalled.

She repeatedly injected blue food coloring into a spinach plant, and a few weeks later she took to school a shriveled, stained vegetable — she had forgotten to water it — and explained that children would happily eat spinach if only it were blue.

"Sounds like a weird beginning, but after that I just realized that science is cool, it's something I want to do," said Ms. Bose, who eventually hopes to get a doctorate and a medical degree so that she can both treat patients and look for new cures. "And it's just been getting better from there."
 

nitesh

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At ‘Alice’ in science wonderland, the ‘muchness’ of India - Indian Express

"Apart from so many Indians working with us at important positions, I think whenever we need a particular kind of hardware that either does not exist or is difficult to find, we turn to India, and an obscure factory in Indore or a firm in Chandigarh delivers it," Schukraft says.
"At every stage, from constructing labs to every experiment, either Indian scientists or Indian firms are involved. In the Alice experiment, Indian scientists contributed by creating the photon multiplicity detector. It is purely an Indian effort, from conception to commissioning. A firm in Chandigarh gave us the electronics, while electronic chips, silicon detectors and a particular kind of graphite that is able to protect delicate hardware came from Bangalore,'' Naik, who is also a member for the CERN Management Board, said.
"We are trying to understand what happened 13.7 billion years ago, unlock the mysteries of the universe," she said, a gleam in her eyes. "In the tunnel, particles collide 40 million times per second and we record the data. The volume of data collected is so huge that CERN has only 20 per cent capacity to analyse it, the rest is distributed across the world, much of it goes to Kolkata. You will be surprised at the number of Indian universities and institutions that are involved with CERN," Dr Sharma said.
To capture 40 million digital photos per second of colliding particles in the tunnel and to send the data of each collision separately, millions of cables are required. It was an obscure factory at Indore took up the challenge and delivered miles and miles of cables thinner than a strand of hair.
 

nitesh

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At ‘Alice’ in science wonderland, the ‘muchness’ of India - Indian Express

"Apart from so many Indians working with us at important positions, I think whenever we need a particular kind of hardware that either does not exist or is difficult to find, we turn to India, and an obscure factory in Indore or a firm in Chandigarh delivers it," Schukraft says.
"At every stage, from constructing labs to every experiment, either Indian scientists or Indian firms are involved. In the Alice experiment, Indian scientists contributed by creating the photon multiplicity detector. It is purely an Indian effort, from conception to commissioning. A firm in Chandigarh gave us the electronics, while electronic chips, silicon detectors and a particular kind of graphite that is able to protect delicate hardware came from Bangalore,'' Naik, who is also a member for the CERN Management Board, said.
"We are trying to understand what happened 13.7 billion years ago, unlock the mysteries of the universe," she said, a gleam in her eyes. "In the tunnel, particles collide 40 million times per second and we record the data. The volume of data collected is so huge that CERN has only 20 per cent capacity to analyse it, the rest is distributed across the world, much of it goes to Kolkata. You will be surprised at the number of Indian universities and institutions that are involved with CERN," Dr Sharma said.
To capture 40 million digital photos per second of colliding particles in the tunnel and to send the data of each collision separately, millions of cables are required. It was an obscure factory at Indore took up the challenge and delivered miles and miles of cables thinner than a strand of hair.
 

W.G.Ewald

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A simple answer

Very soon, the sight of dirty railway tracks at platforms may become a thing of the past.


Don't flush while at the station!
 

nitesh

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India to build world's largest fridge to house fusion reactor - Economic Times

NEW DELHI: Indian engineers will fabricate the world's largest high-vacuum cold storage vessel for an ambitious international project to generate energy from a process that powers the sun.
Scientists and engineers at the Institute of Plasma Research (IPR), Gandhinagar will manufacture this mammoth cryostat in segments at a cost of 100 million euros and ship it to France for being assembled at the site.
 

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