Device breathes life into H1N1 patient


NEW DELHI: A machine traditionally used to allow gas exchange outside the body during a bypass surgery, holds out hope for swine flu patients . It can alleviate acute respiratory distress, responsible for death in most swine flu cases. The virus has claimed over 400 lives in India this year.

Extracorporeal Membrane Oxygenation (ECMO) is a machine which acts like an artificial lung by removing carbon dioxide from the blood and adding oxygen outside the body. Doctors at Sir Ganga Ram Hospital have used it successfully to save a 54-year-old man suffering from swine flu.

Dr Arup Basu, vice chairman of the hospital's pulmonolgy department, said Rajesh Kumara, a Dwarka-based industrialist, was referred to them by another private hospital in Dwarka on January 30. "He was suffering from severe respiratory distress and de-saturation. He could not breathe or walk and had to be admitted to the ICU. We put him on high-frequency ventilator support and antibiotics but it failed to improve his oxygenation. We then put him on ECMO on February 7 as a last-ditch effort," said Basu. He said the patient remained on ECMO for a record 24 days, and weaned off gradually after his natural lungs showed signs of improvement.

The patient's family were all smiles. "In the last one month, ever since he got admitted, there have been many trying moments. Rajesh suffered from secondary infection and there was risk of haemorrhage if the blood clotted. It is the doctors' effort and god's grace which has seen him through," said Ranjana, the patient's wife.

Doctors said acute respiratory distress syndrome is the most common cause of death among swine flu patients. "We could save Kumar only because the lungs were given rest till the infection subsided. Usually, such patients give way due to lack of oxygenation in the blood," said Dr Arun Mohanty, consultant cardiologist. But, he added that ECMO cannot be used in patients with irreversible respiratory failure.

The hospital authorities said the cardiac anaesthesia team headed by Dr Arun Maheshwari worked round the clock to save the patient. "ECMO has proved to be lifesaver in this difficult case of swine flu. I hope this important technology will help in saving the lives of many more critical patients in future," said Dr D S Rana, chairman, board of management at SGRH.

The use of ECMO to save swine flu patient is new in India but it has been done extensively abroad. A study published in The Journal of the American Medical Association ( JAMA) in 2011, said an investigation at a UK hospital found that twice as many non-ECMO-referred patients died on not being referred for ECMO during 2009-10.


New material tries to solve global problems

Singaporean scientists have discovered a new low-cost material that could do everything from cleaning water to producing clean energy to even healing wounds in the form of a bandage

A new wonder material that can generate hydrogen, produce clean water and even create energy. Science fiction? Hardly, and there’s more - It can also desalinate water, be used as flexible water filtration membranes, help recover energy from desalination waste brine, be made into flexible solar cells and can also double the lifespan of lithium ion batteries. With its superior bacteria-killing capabilities, it can also be used to develop a new type of antibacterial bandage.

Scientists at Nanyang Technological University (NTU), led by Darren Sun have succeeded in developing a single, revolutionary nanomaterial that can do all the above and at very low cost compared to existing technology.

This breakthrough which has taken Sun five years to develop is dubbed the Multi-use Titanium Dioxide (TiO2). It is formed by turning titanium dioxide crystals into patented nanofibres, which can then be easily fabricated into patented flexible filter membranes which include a combination of carbon, copper, zinc or tin, depending on the specific end product needed.

Titanium dioxide is a cheap and abundant material, which has been scientifically proven to have the ability to accelerate a chemical reaction (photocatalytic) and is also able to bond easily with water (hydrophilic).

“While there is no single silver bullet to solving two of the world’s biggest challenges: cheap renewable energy and an abundant supply of clean water; our single multi-use membrane comes close, with its titanium dioxide nanoparticles being a key catalyst in discovering such solutions,” Sun said. “With our unique nanomaterial, we hope to be able to help convert today’s waste into tomorrow’s resources, such as clean water and energy.”

Discovery of the material

Sun had initially used titanium dioxide with iron oxide to make anti-bacterial water filtration membranes to solve biofouling - bacterial growth which clogs up the pores of membranes, obstructing water flow.

While developing the membrane, Sun’s team also discovered that it could act as a photocatalyst, turning wastewater into hydrogen and oxygen under sunlight while still producing clean water. Such a water-splitting effect is usually caused by Platinum, a precious metal that is both expensive and rare.

“With such a discovery, it is possible to concurrently treat wastewater and yet have a much cheaper option of storing solar energy in the form of hydrogen so that it can be available any time, day or night, regardless of whether the sun is shining or not, which makes it truly a source of clean fuel,” said Sun.

“As of now, we are achieving a very high efficiency of about three times more than if we had used platinum, but at a much lower cost, allowing for cheap hydrogen production. In addition, we can concurrently produce clean water for close-to-zero energy cost, which may change our current water reclamation system over the world for future liveable cities.”

Depending on the type of wastewater, the amount of hydrogen generated can be as much as 200 millilitres in an hour. Also to increase hydrogen production, more nanomaterial can be used in larger amounts of wastewater.

With its anti-microbial properties and low cost, the membrane can also be used to make breathable anti-bacterial bandages, which would not only prevent infections and tackle infection at open wounds, but also promote healing by allowing oxygen to permeate through the plaster.

The membrane’s material properties are also similar to polymers used to make plastic bandages currently sold on the market. The material when with other materials or made into another form such as crystals, it can have other uses, such as in solar cells.



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A Car That Runs on Air, Water: Here's How It Works

http://www.bloomberg.com/video/a-car-that-runs-on-air-water-here-s-how-it-works-1AUvv55XQSOzuVdas2S82Q.html?cmpid=taboola.videohttp://www.bloomberg.com/video/a-car-that-runs-on-air-water-here-s-how-it-works-1AUvv55XQSOzuVdas2S82Q.html?cmpid=taboola.video

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3/29/2011 @ 2:52PM |5,075 views

Cars That Run On Air And Water


Cutaway illustration of a fuel cell car
Image via Wikipedia
Written by Jim Motavalli
Oh, no, what can I do now? My career reporting on high gas prices and the race to build fuel-efficient cars is over!
What’s left to report on now that a colleague has emailed me a story about a Japanese company, Genepax, that has invented a “car that runs on nothing but water.” The next thing you know, they’ll invent one that runs on air. Oh, they did that, too? I guess a new era of conflict-free, ultra-green motoring is upon us.
Not.
What is it that leads not only bloggers but respectable TV networks to write so uncritically about stuff like this? Let me make it clear here: There’s no energy-free lunch. You can’t get cars to run on air without expending tons of energy to compress that air. And the range of a car on compressed air is 10 to 15 miles at best.
Genepax has shown a conventional fuel-cell car that runs on hydrogen, and it won’t head down the road on water unless it carries an expensive, heavy electrolyzer on board the car. It says that it will run for an hour on just a liter of water! Great, but what did it cost to extract hydrogen from that water, and how much does the electrolyzer cost?
This sounds like one of those ‘violates the second law of thermodynamics’ deals we saw weekly at General Motors,” says Byron McCormick, who headed fuel-cell development at the automaker. “There is no source of energy available to a moving car to replace the energy needed to break water.”
Larry Moulthroup of Proton Energy Systems in Connecticut, which lent me my fuel-cell Toyota Highlander, offers some thoughts on how the water car might work. “The speculator in me imagines that perhaps within the trunk-mounted white box there is a reaction, perhaps aluminum oxidation, that is producing hydrogen at or near atmospheric pressure, which in turn is being purified and then is is being used in possibly a hydrogen-air fuel cell to generate the electricity for the drive motor,” he said. “Maybe, but I just don’t know.”
Automakers investigated a version of the Genepax solution when Daimler proposed that cars carry big tanks of methanol, then use an on-board reformer to extract hydrogen on the fly. It wasn’t economical, and confident reports that the automaker would have hundreds of thousands of those cars on the road by 2006 fell by the wayside. Maybe we’ll see commercial fuel-cell cars by 2015, but they’ll carry compressed hydrogen gas, not reformers or electrolyzers.
Note that although the post on cars that run on water is from this month, the gullible Reuters video is from 2008. Not much has been heard from Genepax since, though there was a brief vogue in homemade water bottle-based electrolyzers you could add to your car and instantly achieve a zillion mpg:
http://www.youtube.com/watch?v=tZ0kjilQd1s
Here’s another naïve water-based power video, this time from Fox in 2006. Again, an automaker was supposedly negotiating with this backyard inventor, but nothing came of it:
http://www.youtube.com/watch?v=vKM4pb9Oxrg
And don’t get me started on air cars, which in the form of the perennially coming technology from French company MDI have gotten huge amounts of free publicity despite many years of failing to deliver on production plans. Here’s Popular Mechanics saying they are coming to our shores in 2009 or 2010, with maybe 1,000 miles of range. And for just $18,000! The last we heard, Indian automaker Tata was interested


Electric battery cars have range problems, and they’re expensive — but they actually work. We can buy them now in the form of cars like the Nissan Leaf and Chevy Volt. They’re not vaporware. Trust me on the cars that run on air or water. You might as well harness a unicorn to your chariot and run with that.
For a little fun, watch this video for some step-by-step instruction on how you, too, can harness limitless power from an innocent bottle of water.
Jim Motavalli blogs for the Mother Nature Network and The New York Times.
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