my indiasite and mypeopleonearth

my indiasite and mypeopleonearth

Saturday, December 29, 2007

Electricity from nano particles

scientists have discovered a novel way to generate electricity from heat by trapping organic molecules between metal nano particles,report live science.currently about 90% of the world's electricity is generated by burning fossil fuels,which creates heat, often in the form of steam.the stem spins a turbine that drives a generator to produce electricity.but this method is indirect,and in the process,plenty of heat is wasted and its energy goes uncaptured. generating one watt of power requires about 3 watts of heat input and involves dumping into the environment the equivalent of about 2 watt of power in the form of heat. for the last 50 years ,scientists have been exploring ways to use this wasted heat.it even a fraction of the lost heat can be converted into electricity in a cost effective manner,the lead author said ,Mr. Arun Mujamdar of the university of California.

Big terror threat from food

the diabetic epidimic is getting out of control world wide.in usa about 21 million people or 7% of the population are now believed to be diabetic. 6million people have the disease but donot know it. and that doesnot included the 41 million people with pre-diabetes.a condition in which blood glucose levels are higher than normal but not high enough to be diagnosed as type 2 diabetes. now doctore are fnding out patients who suffer from both type 1 and type2 diabetes-a phenomenon known as double diabetes or hybrid diabetes