Dear Saxena ji,
Thank you for inquiry.
West facing windows can be a big source of heat, first measure which you...
Why all these are not applicable to Tuticorin port or the one planned in AP or WB ?
What an eye opener! As an environmental engineer,disposal of sanitary napkins has always been a concern during waste...
WHILE greens have been carping themselves hoarse against the "throwaway" culture, a scientist at the University of Victoria in Canada has calculated that disposable cups -- polystyrene or paper -- may be more ecofriendly after all (Nature, Vol 369, No 6473).
Comparing the energy consumed in manufacturing reusable ceramic cups and disposable cups, Martin B Hocking has discovered that moulded polysterene foam cups consume the least total energy per piece.
The mathematics are a bit involved. He says that if a reusable cup is used between 10 and 70 times, then the energy required to manufacture the cup per use is equivalent to the energy cost of making a disposable one. However, if the energy used to wash and sanitise a reusable cup is factored in as well, to get your energy's worth you would have to use a reusable cup 1,006 times to make it as energy efficient per use as a polystyrene cup.