Friday, September 28, 2012

Cow gives us milk and BLOOD

          The grazzing domestic mammal is now on the list of blood donors

Cow is the most domesticated animal historically that support us with a variety of dairy products. Still, many rebuff human depending on their milk on health and ethical grounds. But Cows are going to be more helpful not just with milk but wirh their blood.
In what could be a breakthrough in medical feilds, a 33 year old Australian woman Tamara Coakley, was bought to life using cow's blood. Tamara, a car crash victim, was suffering from profuse blood loss, and her heart was failing. But she wasn't ready to accept blood from a donor on account of her religious faith - she was a "Jehovah's Witness"-which permits her to use only blood substitutes.
Panicked doctors pulled all stops to save her life, and eventually stuck on the idea of substituting human blood with experimantal plasma known as HBOC-2-1 from cow's blood. The required 10 units of haemoglobin was soon developed by the military.
Doctors of Melborn hospitals where Tamara was admitted administrated the blood-product for days. The patient, who was in a medically-induced coma, showed signs of recovery. Surprisingly, her haemoglobin levels doubled, making the experiment a huge success. According to medical sources will help solve blood shortage worldwide.

Sunset over South America

From the International Space Station the crew photographed a sunset seen over western South America. The station crew sees, on average, sixteen sunrises and sunsets during a 24-hour orbital period. Each changeover between day and night on the ground is marked bythe terminator, or line separating the sunlight side of Earth from the side in darkness. While the terminator is conceptualized as a hard boundary-and is frequently presented as a such in graphics and vishualizations-In reality the boundary between light and dark is diffuse die to scatering of light by Earth's atmosphere.

Passive smoking damages memory

Passive smoking may damage memory, says a new research at Norhumbria University, UK. The study shows that people exposed to second hand smoking (also those who live with smokers) for at least 25 hours a week for four and half years are found to have memory issues.

Bacteria ate 2,00,000 tons of oil and gas

Naturally-occurring bacteria in the Gulf of Mexico have consumed and removed at least 2,00,000 tons of oil and natural gas over a period of five months after it spewed into the deep Gulf from the 2010 Deepwater Horizon explosion and oil spill, says a study by two American Universities.

Snow falls on Mars, says Orbiter

NASA's Mars Reconnaissance Orbiter data have given scientists the clearest evidence yet of carbon-dioxide snowfalls on Mars. This reveals the only known example of carbon-dioxide snow falling anywhere in our solar system. The snowfalls occured from clouds around the Red Planet's South Pole in winter, reports Science Daily.

Birds pay respect to dead ones.

Death is sorrowful to humans. So is the case with some birds, says a study by the University of California. When a dead scrub jay was shown to another jay on camera, its reaction was an emotional outburst, making noisy calls to others, goving a "funeral" that lasted almost half an hour.

Wednesday, September 26, 2012

Plastic never dies

Is biodegradale pladtic nothing more than a pleasant charade?
The eco consious world is abuzz with eco-friendly plastics nowadays. Disintegrating plastic is received with much relief hoping it could eventually replace plastics waste, which simply refuses to go easily. China has already started to shift to environmentally friendly version of polythene; so are several other countries. India is also mulling over the possiblities of a switch-over.
Polythylene is one of the most widely used materials in the world. The disintegraded plastic bag has become one of the most potent symbols of human impact on the environment. As worries over the vast scale of waste from this plastic has grown, so has the use of purportedly "degradale" forms of it.
However, scientists caution that it disintegrate, of course , but might just linger in the environment. In short, "degradable" plastic bags are not helpful to the environment as hoped.
A review published in Environmental Science and Technology notes that there is no evidence that "degradable polyethylene" is actually all that they claim.
Although it is clear that "degradable" plastic bags will fall apart in the environment, the resulting fragments can persist for long time, and there are no issue long-term studies on these pieces. A key issue is that products can be described as biodegradale without reference to the timescale it takes them to fully biodegrade.

The mission greentouch

A famous group is working to prove that communicating info needn't produce so much carbon pollution
Worried about the sodden surroundings left by an energy craze world? Possibly you can feel good now. Bell Labs believes networks should only use 1,000th the energy they do today. GreenTouch, a global consortium organised by Bell Labs will create the technologies needed to make communications network more energy efficient. It believes it is possible to reduce energy in communicating information practically by 1,000 times.
By 2015, Bell Labs aims to demonstrate the key components needed to increase network efficiency. Members include China Mobile (the world's largest carrier), AT&T, Swisscom, Telefonica, MIT, Stanford, Freescale and Samsung Advanced Institute of Technology.
A thousand-fold reduction is roughly equivalent to being able to power the world's communications network, including the Internet, for three years using the same amount of energy that it currently takes to run them for a single day. With its launch, the consortium also has issued an open invitation to all members of the Information and Communication Technology community to join forces in reaching this ambitious target. The Green Touch Initiative shows how business can play its part in delivering a low carbon society.
GreenTouch began in mid-2009 when a group of Bell Labs scientists discussed the modern equivalent of Shannon's work - how much energy is needed to communicate information.
Bell Labs has a stunning reputation: its reaserchers have won, or shared in, seven Nobel prizes for physics. The most recent was in 2009, for semiconductor imaging. Today Bell Labs is the profit-oriented research operation of Alcatel-Lucent.