Hydrogen or deuterium gas when mixed with air or oxygen forms a highly flammable mixture over a wide range of proportions; they also form flammable mixtures with chlorine and the oxides of nitrogen, further, they will also react spontaneously with fluorine and chlorine trifluoride. Because it is impossible to guarantee that any system will be completely leak free every effort should be made to exclude all sources of ignition. The designer and the user should give careful consideration to the...

Occupational risk in kitchens whether restaurants or cafeterias. Grease fires are the major common hazards that required for extinction wet chemicals. These fires do pose hazards to workers. For the extinction of grease fires there are wet chemical systems since 1994 this according to Gagnon, Robert. These work best with vegetable oil since is lower temperature reducing probabilities of auto ignition. Also it is required for the commercial kitchens to have the extinguishment system replace the...

Any policy considered on its own will not deliver energy savings. Policy only provides the mandate and focus for the development of an effective energy management strategy. After approval of a policy, a working strategy is required to be developed. In some cases an organisation might need to build up a draft strategy to finalise and approve their policy. Having a strategy is essential for large organisation, but for smaller organisations a robust energy plan may be sufficient. Strategies should...

Energy is vital aspects of todays modern world. Power generation is very expensive and complex process. In developed countries, it is easy to produce power and people take power for granted, due to the power of money; while people in undeveloped countries crave for the power. There are different type of environmental effects are related to the different type of power generation technology. Some of these effects are more severe than others. Consumption of fossil fuel is the prime example for the...

This document is premised on the thesis that, there are positive effects that can be derived from global warming and the effects can possibly drive socio-economic growth. These benefits are based on all sectors of the economy such as agriculture, environment as well as health. Global warming refers to the concept of observed as well as projected increases in the earths and oceans temperatures (Houghton, 1997). Increase in temperature levels is due to the perceived increase concentrations on...

Land use and development have major impacts on the hydrologic system and pollute surface and groundwater by altering water flow and runoff and land source pollution. These impacts affect drinking water sources, water-based recreation, and strom management. Impervious surface (roads, parking lots, rooftops) associated with urban development increase and speed runoff from storms, thereby increasing downstream flooding. They also reduce the infiltration of water, thereby lowering groundwater...

Global Warming is not due to human contribution of Carbon Dioxide. Time, energy and trillions of dollars are being wasted with no scientific justification. The world's climate has fluctuated long before man started burning fossil fuels. These climate changes are well within natural variability and explained quite easily by changes in the sun. The theory of Global Warming assumes that CO2 is an atmospheric greenhouse gas and as it increases temperatures rise. The theory was accepted before...

Fossils are evidence of ancient life preserved in sedimentary rocks. A fossil is the tangible remains or signs of ancient organisms that died thousands or millions of years ago. Fossils can also be considered clues to the past as they shed light on what ecosystems and environments were like for life in the past. b) What is the difference between a body fossil and a trace fossil? The difference between a body fossils and a trace fossil is that: a body fossil consist mostly of the remnants of...

Abstract: Bio-fuels are a low carbon, renewable energy source manufactured mainly for the replacement of fossil fuels in the transport industry. The most economically viable, and widely marketed, bio-fuels include bio-ethanol and bio-diesel. This alternative energy source has lower carbon emissions; this is the main reason for its wide acceptance and support as the world tries to slow down the effects of global warming. There are many other advantages to this technology, as well as...

Emergency situation requires fast and accurate decision as every decision is very critical to save human lives. Naturally, during this situation humans make decision based on their past experiences by which their nerves and brain system will perceive the situation and mapped with their experiences to produce action. This naturalistic decision making approach has been one of the attention in emergency. In a constantly changing economic and social environment, organisations, managers, specialists...