Finite Element Analysis and Finite Element Method

The finite element method (FEM) has been introduced in the sixties in the aviation sector and has been used in dentistry in the seventies. This is a method for applying computerized numerical iteration. With this technique, stresses and displacements are determined with a predetermined pattern. FEM technique can be used for a small or large deflection will be examined in the applied load or displacement. Is capable of analyzing deformation of the objects, which are permanently in its curved shape of the applied force or elastic deformation. How incredibly large number of calculations needed to analyze a large structure, is a computer. Finite element method is available for many disciplines and companies, because of cost and low power of modern computers.

Ways to Reduce Environmental Pollution

Not all of us are aware that environmental pollution is exactly what it means, instead of the more misunderstood. There is a difference between pollution and the general "pollution". Pollution is just this kind of pollution that the necessary changes, that is against the laws of nature. This is a change that affects the way in which the elements of water, air and earth. The extent to which are interrupted biological cycles of these elements, can not be measured. The factors that lead to these changes in other words due to contamination, said impurities. The two most important factors in the industrial revolution and urbanization. They were both in their own way, the funds are exhausted, and has contributed to the appalling conditions. Among others is an important enrichment of pollutants, greenhouse gases and carbon dioxide, sulfur dioxide, nitrogen oxides, the humidity and smog too.There urgent we do something that would increase pollution. Many people want their part to help, but I do not know how to reduce environmental pollution. The environmental requirements that need to made ​​quickly, before the environment is changing beyond recognition. But how can we achieve this? It 'simple. Just follow these simple tips to reduce pollution, and you're a little help.

Tundra Plants

Arctic tundra plantsThe arctic tundra around the Arctic and extends more to the pine forests of the taiga biome. The average temperature is about -34°C, with summer, a bit "less negative, at about 3-12°C. The permafrost, the permafrost is a sub-material and fine gravel. The growing season is only 50-60 day year . no plants to contend with deep roots in these extreme climatic conditions. This is the source of water for the vegetation available to help when the water saturation in the upper marshes and ponds that form. In addition, these plants are resistant cold. Surprisingly, the persistent snow cover protects plants against the cold winds of the tundra. These plants photosynthesis at low temperature, depending on the light intensity. Plant breeding in the Arctic is mostly by budding and flowering of the division or not.

Rotary Engine

If that the rotary piston, which pressure as a combination of air and fuel is combusted used. In a piston engine, the pressure in the cylinders and pistons included forces back and forth. The connecting rods and crankshaft to convert reciprocating motion of the piston into rotary movement to be used for motor vehicles. In a rotary engine of the combustion pressure in a chamber by a portion of the casing and closed off by a triangular surface of the rotor, which is used in place of motor pistons contain.The rotor follows a path as something that makes you like a Spirograph. This process continues to each of the three peaks of the rotor in contact with the housing, that is to say as three different quantities of gas. The movement in the rotor chamber, wherein each of the three parts of the gas alternately expands and contracts. This expansion and contraction that makes air and fuel into the engine compresses the rated power and allows the gases to expand and exhaust guide.We will look at a rotary engine, use the parts, but on a new car model to look with a new rotary engine.Mazda RX-8Mazda has been using a pioneer in the development of production cars, the Wankel engine. The RX-7, which went on sale in 1978 was probably the most successful rotary engine powered vehicle. But it is through a series of rotary engine cars, trucks and buses, also come from the 1967 Cosmo Sport. The past year has sold the RX-7 in the United States was in 1995, but the rotary engine is a return in the near future.