Physical science Essay Example | Topics and Well Written Essays - 750 words

Physical science - Essay Example Thirdly, fission and fusion reactions possess the capacity turn the energy associated with ordering of subatomic particles into nuclear energy (How is Energy Converted). Fossil fuels pertain to fuels formed out of the organic remains of prehistoric plants and animals that undergo natural process of anaerobic decomposition and these fuels are chiefly comprised in coal, gas, and oil. It normally takes nearly 700 million years for decaying plant and animal matters to be fossilized upon exposure to extreme levels of heat and pressure into usable fossil fuels which are mostly rich in carbon with coal, natural gas, and petroleum by composition. Being a non-renewable source of energy, fossil fuels may be volatile or non-volatile as materials ranging from those of minimal C to H ratios as methane gas and liquid petroleum to materials with heavier carbon content than hydrogen as in the case of anthracite coal. In modern times, fossil fuels are confronted with the perils of continuous depletio n at a rate that alarmingly exceeds that of their production which implies that renewable substitutes with equivalent advantages ought to be discovered and settled at for corrective resolution (Lecture 10: Fossil Fuels as Energy Sources). Aside from being a flexible non-renewable energy source, according to their structure, depositional environment, and thermal reactions, fossil fuels draw a potential attraction due to the fact that most of world’s reserves of oil and natural gas come from deformed rocks whereas a great quantity of coal may be derived from sedimentary rock layers that do not undergo deformation. Sediments are readily found everywhere on which are comprised marine organic matter filled with oil and gas in high proportions to make opulent fossil fuel amounts. Because of low oxygen concentration on environments in which massive deposits are preserved and coal forms that gather toward bogs and swamps, fossil fuels can be acquired with much convenience. Under natu ral circumstances, fossil fuels are made beyond human intervention since thermal processes may occur spontaneously after decomposing organics goes through preservation to become fossil fuels at a later time. Aside from fossil fuels, renewable alternatives could be wind energy and geothermal energy or heat derived from the earth by means of a natural geologic process. As a form of solar energy, the energy of the wind is found to comprise turbulent masses of air rushing to even out the differences in atmospheric pressure formed when the sun heats the air more in one place than in another. For centuries, wind power has been utilized extensively in pumping water, grinding grain, and producing electricity of the modern age. Wind turbines as major replacements to windmills perform the course of wind power upon conversion of the wind’s kinetic energy to mechanical energy which sustains small to large farms and villages with clean and renewable loads of electricity (Freris, 1990). Mo dern technological advancements in the fields of engineering and science have revolutionized the old design in windmills with a flexible range of

Clinical Epidemiology and Decision Making Case Study Essay

Clinical Epidemiology and Decision Making Case Study - Essay Example These spores thus need water or moisture to germinate and flood provides them the ideal environment to grow. Molds if inhaled can cause allergic reactions that affect the respiratory tract. Other illnesses include sinus congestion, sore throat and breathing problems. The health risks can be more for children and elderly people as well as people with low immune systems. Mold can also have severe implications on structural strength of buildings as well which may compound the problem in flood stricken areas. The field of clinical epidemiology suggests that general practitioners must consider facts based on population based studies of diseases and base their treatment and design preventive measures on these measures. Clinicians may use these statistics towards better patient care. In this paper we attempt to explore how clinical epidemiology may be beneficial to guide and deal with detection, prevention and treatment of mold in flood hit areas. It is pertinent to note that mold may appea r soon after the flood and may carry on until there is moisture. For this reason it is important that the rehabilitation process may not be started unless all moisture dries out. For the purpose, the health practitioners treating the disease need to be advised before and immediately after the floods about the types of molds in the area as well as the extent of illness in the area. Also, the health practitioners need to know about the medical facilities that they would have as well as chalk out a method to deal in case that it takes the form of an epidemic. These practitioners need to be told that they must not look to test every individual due to resources constraints and would be better served to look for symptoms. 2. Types of Molds Evidence from clinical epidemiology suggests that there are three types of molds that can affect people in the aftermath of a flood. These are mentioned below: i. Allergenic These types of molds are the least damaging as they affect only those individua ls that are already weakened by illness or disease and a have a weakened immune system. Although these molds are present all year, they thrive in areas where the moisture content is significantly high. This essentially means that these types of molds can exist in the aftermath of a flood. These molds result in sneezing and cause allergic reactions. Thus they do not have life threatening affects unlike other types of molds that might result in severe respiratory problems including congestion of the windpipe and choking. Mold spores are examples of allergenic molds. ii. Pathogenic This type of mold may cause respiratory tract infections. For persons with a weakened immune system, this may result in severe illness and may be possibly life threatening. However, healthy individuals may develop hypersensitivity but do not incur infection. This is why it is imperative that children and elders are guarded against this type of a mold infection. The bipolaris mold is one example of a pathogen ic mold. The mold may manifest itself as mycotic keratitis and sinusitis etc. This type of a mold can affect both immune-competent as well as immune-compromised individuals with different repercussions. iii. Toxigenic The most devastating strain of mold produces myotoxin which can cause some seriously undesirable health problems. This is an extremely toxic strain of mold which may not only