What Is Wind Energy All about Essay Example | Topics and Well Written Essays - 1250 words

What Is Wind Energy All about - Essay Example This essay will talk about one form of renewable energy which is wind energy. As stated earlier, wind energy is a form of renewable energy. Renewable energy sources are those that are replenished naturally on a human timescale. Examples of renewable energy are geothermal power, wind energy and sunlight. Wind energy is used to produce electricity when fast-moving air called wind, hits propeller-like blades attached to a rotor. The rotor is coupled to a dynamo-like generator to produce electricity. The generator produces electricity through electromagnetism in its coils. The propeller-like blades, the main shaft and the generator form a unit that is known as a wind turbine. Wind turbines are usually mounted on towers to harness most of the energy of the moving air. These turbines are usually erected in areas that are very windy and are usually outside towns and areas of dense populations. The energy from wind has been harnessed both residentially and commercially. People have used small wind turbines to generate electricity for their own personal use. The generation of electricity has also been done for commercial purposes but in most cases, the energy from a given wind farm is normally used to serve a specific area. Divided opinions have been witnessed by the use of wind energy. Some people have supported the increased tapping and use of wind energy. They argued that wind energy is a great idea and way of generating cheap electricity. However, there are those who have not agreed with this are a bit sceptical when it comes to wind energy. The divided opinions have been generated by the various pros and cons associated with wind energy.

Human genetic engineering Research Paper Example | Topics and Well Written Essays - 2000 words

Human genetic engineering - Research Paper Example Human genetic engineering, HGE refers to a process where medical professionals and scientists interfere with the DNA or genetic makeup of a human cell. Ideally, this process aims at fixing defective genes that have the potential of causing diseases or other genetic complications (Berry 5). Hanna refers to this as genetic enhancement and acknowledges it as the process where genetic material would be transferred for the modification of non-pathological human traits. The institute further argues that the term entails not just making humans well, but rather better than well, by optimizing their capabilities and attributes. This could be accomplished through insertion of a foreign gene into an organism that is virus-like. Thereafter, this organism would be introduced to the human cells thus inserting the new gene into the subject’s genome. Three applications have been used for HGE. Somatic engineering would target specific genes in the given tissues and organs without interfering with the genes occurring in the sperm or eggs (Koops et al. 19). This application aims at treating an existing condition without altering the entire genetic makeup of an individual. On the other hand, germline engineering targets the genes in embryos, sperm or eggs at the early development stages. Thus, this genetic modification affects the cells in the body of the developing embryo that are created afterwards. If the individual sires offspring, such genes would be passed onto the new generation. Finally, cloning could also be applied in HGE in three different ways as given by Berry (24). DNA cloning, also referred to as recombinant DNA technology, involves the transferring of DNA fragment from an organism onto an element that is self-replicating so that the DNA replicates itself in the foreign host cell. To generate an organism with the same DNA as an existing organism, then reproductive cloning would be used. Finally, therapeutic