Nad College Essays Samples For Students

Bio fuel cells utilize biocatalysts for the conversion of chemical energy stored in glucose into electrical energy. Bio-catalyzed oxidation of glucose or other organic substances at two electrode interfaces provides a means for conversion of chemical energy into electrical energy. The obtainable power of a fuel cell (P cell) is the product of cell voltage (V cell) and the cell current (I cell)

The ideal voltage id affected by the difference in potential of the oxidizer and fuel as represented in the equation

(E◦1ox - E◦1fuel), with irreversible losses in voltage caused by kinetic limitations of electron movement, (η). Resistance and differences in concentration gradients of the energy source lead to decreased voltage values. As represented below
P cell = ...

Starting from late November 2012, during the holiday season, over 500 Wal-Mart workers from various locations organized a series of strikes. The strikes were a part of an on-going Wal-Mart employees’ campaign for better working conditions and freedom to express their concerns publicly. Wal-Mart workers claim that the biggest US employer retaliates for taking part in strikes or demanding better schedules, medical benefits and wages. The retail giant has several methods in its disposal: moving “problematic” employees to different departments, cutting their wages and shuffling working hours. As Alice Hines and Kathleen Miles reported on November 23, 2012, in the Huffington ...