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Did You Know?

July 30, 2011

Did You Know?



What is Bombay blood Group?

THE Bombay blood group is a rare blood group; it is said to occur in one out of every 2,50,000 people (in certain parts of India the
proportion is one in 7,600). The blood group has been so named as it was first discovered in Mumbai. Dr. Bhende is considered the first person to have spotted its rarity; he did so in 1952. The blood type is believed to occur in people of Eastern/ Indian descent only.

The Bombay blood group is very different from the O+ group; the antigen ‘H’ present in the latter doesn’t exist in the former. Instead, the Bombay blood group has an ‘H’ antibody, say doctors. This means that Bombay O+ blood group holders can accept Bombay O+ blood only. However, there are differing views on whether or not this blood can be donated to other blood groups. The Bombay blood group can be detected only by special tests. A person with this blood type must convey this information to the nearest blood bank.

‘Super Sand ‘ For Pure Water

A latest breakthrough can help decontaminate water effectively and inexpensively, especially in developing countries. This novel technique involves the use of ‘super sand’ to clean polluted drinking water.
Super sand comprises particles of regular sand that are coated with the oxide of graphite, the element commonly used in pencils. Firstly, graphite oxide is added to water and blended with sand. This mixture is heated up to 105°C so that the water evaporates. The resultant product is what is known as super sand. The graphite oxide used can also be modified to makeit more sensitive to specific contaminants. The entire method is extremely cost-effective. Super sand can, thus, be a boon for regions having a problem of potable drinking water.

From:- Navneet News House

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