various renewable energy sources‚ fuel cell technology has received great attention as an alternative to the conventional way of getting energy due to its high efficiency‚ clean operation and cost efficient supply of power demanded by the consumers. Proton exchange membrane (PEM) fuel cells technology plays a leading role for many applications when comparing with other competitive types of fuel cells. The world is in high demand for clean alternative fuel source and PEM fuel cells could be that change with
Premium Fuel cell
Fossils are found on Mount Everest because the mountains were once the sea bed before rising. The types of fossils in Mount Everest are marine fossils. Marine fossils are sea animals‚ plants‚ or sea shells basically anything in the water that are now fossils. The types of fossils indicate the environment that these fossils were found on the ocean floor‚ meaning at one point in time‚ the seas cover the land(Geology of the Mount Everest). The marine fossils end up on Mount Everest by continental drift
Premium
Bio-fuels Menno van Amen TV4E 13-06-2013 The production of bio-fuels has become a controversial topic as the 21st century progresses. Lately the production of biofuels has been discussed quiet frequently and many people have started focusing on the question if the production of biofuels actually is environmental friendly. Firstly‚ what is a biofuel? Biofuels refer to any solid‚ liquid or gas fuel that has been gotten from biomass. They produce biofuels by growing plants‚ growing sugar
Premium Biofuel Carbon dioxide Fossil fuel
were giants. Some dinosaurs were no bigger than small dogs. The smallest kind was about the size of a chicken. No human being has seen a living dinosaur but‚ scientists have many ways of learning about them. One important way is by studying fossils. Fossils give scientists a vast amount of information about ancient animal and plant life which have become extinct. They also helped them in finding out how long ago the animal or plant lived. As animals and plants die over the years they get covered
Premium Dinosaur Cretaceous
people recorded using it. Media and the Internet go hand in hand. One fuels the other‚ and the Internet had become a platform for media. In modern society the media exerts so much pressure‚ that maintaining beauty and youth becomes more important than anything else. Thus‚ creating a type of self-involvement. This leads to loss of perspective and ultimately‚ innocence. People of all ages and genders are susceptible to the effects of the media‚ and it influences everyone in different ways. It can make
Premium Suicide Plastic surgery Twitter
least 6 million years. A. From Ape To Man Fossils from several different early australopith species that lived between 4 million and 2 million years ago clearly show a variety of adaptations that mark the transition from ape to human. The very early period of this transition‚ prior to 4 million years ago‚ remains poorly documented in the fossil record‚ but those fossils that do exist show the most primitive combinations of ape and human features. Fossils reveal much about the physical build and activities
Premium Human Human evolution Hominidae
automobile‚ aeronatical‚ heating and ventilating and others. Electrical engineering includes electricity generating‚ electrical installation‚ lighting‚ etc. Mining and Medical engineering belong partly to mechanical and partly to electrical. Fuel transport and delivery Coal may be delivered by transport truck or railroad cars. A large coal train may be nearly a mile long‚ containing 100 cars‚ each with 100 tons of coal‚ for a total load of 10‚000 tons. Modern unloader use rotary dump devides
Premium Solar power Trigraph Energy
Alternative fuels‚ or at least the concept of it‚ has been around since the early days of the automobile. Alternative fuels such as biodiesel‚ ethanol and methanol‚ have been produced and used on a small scale for decades. They are now being rediscovered due to the rising cost of oil and the instability of world politics. The discovery of these fuels changed the face of the planet‚ but since day one people have looked for other fuels that improved over the course of history. Alternative fuel vehicles
Premium Petroleum Internal combustion engine
FUEL CELL CARS Fuel Cell cars are a major part of the fleet of Zero-Emission Vehicles. The fuel cells are fueled with pure hydrogen and hence they are considered to be zero emission vehicles. Fuel cells have been used on spacecraft for many years to power electric equipment. These are fueled with liquid hydrogen from the spacecraft ’s rocket fuel tanks. Basic Mechanics Fuel cell vehicles turn hydrogen fuel and oxygen into electricity. The electricity then powers an electric motor‚ just like
Premium Hydrogen Fuel cell Hydrogen vehicle
Positive and Negative Impacts of the Industrial Revolution The Industrial Revolution was a change in the mid-18th century from small scale‚ domestic production of goods to machine-based‚ mass production of goods. It is usually thought of as having mostly or only positive impacts on Europe. Although the revolution did have many positive impacts‚ it had its fair share of negative impacts as well. Some of the positive outcomes included the overall increase in production and value of
Premium Industrial Revolution Economics Factory