Fuel cell

The authors could have compared time exposed to biomass fuels between men and women, then included interaction terms in their statistical analysis: It appears that exposure duration or fuel composition may act as a modifier of biomass fuel use. The authors state that men are more likely to be exposed due to factors such as tobacco use,1 but that women are more likely to be exposed due to smoke…

temperature of a fuel to which it must be heated to for its vapour to ignite in the air with a free flame( The Chemistry of, n.d.). It is not just heating…

that need to be present in order for a wildfire to burn, which firefighters refer to as the fire triangle: fuel, oxygen, and a heat source. Fuel is any flammable material surrounding a fire, including trees, grasses, brush, even homes. The greater an area's fuel load, the more intense the fire. Air supplies the oxygen a fire needs to burn. Heat sources help spark the wildfire and bring fuel to temperatures hot enough to ignite. Lightning, burning campfires or cigarettes, hot winds, and even the…

1 INTRODUCTION While humans have been using fire for many thousands of years, we have only recently in our history recognized the benefit of removing smoke from the home. There is little documentation on the history of chimneys and their function in the home. In western civilization there is record of chimneys being destroyed by an earthquake in 1347 (Butler, n.d.). Most homes had a centrally located hearth that was used for heat and cooking, which had a vent directly above it; While this did…

Slightly crack the acetylene (fuel) cylinder valve until the valve opens. When the valve opens, turn it clockwise another one and one half turn. Adjust the acetylene regulator valve until the gauge reads five psi. You then slightly crack the oxygen cylinder valve. When the valve opens…

the main topic of my project is fire, mainly how it depends on fuel and oxygen to keep going. Fire is important because it is used in a variety of ways all around the world. From heating our meals to burning evidence, fire is a very valuable resource. To keep a fire going, you’ll need three things; fuel, oxygen, and heat. In order to start a fire, a source of heat, like the sun and heaters, will have to concentrate their heat on the fuel( you can concentrate heat in multiple ways like using a…

The Respiratory System Organisation of cells in the system Specialised multicellular cells are very important when it comes to the organisation of cells in any type of system. Multicellular organisms are organisms which are made up of many different cells as opposed to unicellular organisms which are single celled. Multicellular organisms undergo functions such as obtaining food, moving, defending and reproducing (example of a multicellular animal); these functions are the response of the…

this process, we may be changing every cell in their bodies forever. While in the long run this process will be perfected. It is far from there now and fixing one problem may create another. Although CRISPER/CAS 9 is often precise, it has been known to cut the wrong strand of DNA leading to a whole new problem. The main subject of debate is whether or not to allow germ-line gene editing. Germ line editing is altering the genome in the sperm or egg cell. This provides the ability to change…

providing the necessary needs for the cell. Although this mainly applies to Eukaryotic cells, this can also apply to Prokaryotic cells. Prokaryotic cells perform some of these function, but in a simpler way. Organelles work together to protect the cell, provide energy, repair the cell, direct the cell, and clean up the cell. First, organelles work together to protect the cell. The cell membrane is the main organelle that regulates and controls what goes inside the cell and what stays out.…

Powering Future Cars The effect of bio-fuels on the planet and the inability of manufacturers to produce electric cars in large scale has ushered in a race for a more efficient and effective fuel for future cars. Hydrogen is one such fuel that fits the bill. The automobile powered by hydrogen fuel cells are the cars of the future. There are many advantages associated with the use of hydrogen to power automobiles. With the perfect technological breakthrough that will enable man to store large…