Environmental Engineer as profession

The general objectives and golas of colleges adn universities are to allow students to mature intelectually and socially and to prepare for careers, especially for environmental engineering profession that are rewarding. The chosen vocation is ideally an avocation as well. Having a job like an environmental engineer, we should take it as an enjoyable job and approaching it with enthusiasm, even after experiencing many of the ever-present bumps in the path. Be love and enjoy is the key, not only for environmental engineering field but apply to other kind of jobs.

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Ecology: its term and concept

Definition: ecology
Ecology is the science of the relationships between organisms and their environments, defined by thefreedictionary. More explanation provided by wikipedia, as ecology is the scientific study of the distribution and abundance of living organisms and their interactions each other. Ecosystems, as part of ecology, is interdependent populations of organisms interacting with their physical and chemical environment. Ecosystem interactions can also include more than two species.

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Gel Filtration Chromatography: protein fractionation

Well known as GFC, this is usually used to fractionate protein. It is based on molecular size, when larger particles will eluete first, followed by smaller molecule. In my experiment, I will employ this to fractionate humic substance. There are several points from which the method in using this GFC. GFC is included in Size Exclusion Chromatography. Size exclusion chromatography (SEC) is a chromatographic method in which particles are separated based on their size. When an aqueous solution is used to transport the sample through the column the technique is known as gel filtration chromatography.

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Public health: short history

Industrial revolution had changed everything including lifestyle, mindset throughout industry world as well as on sanitation condition. The sanitation condition was very sad, at least this was expressed in the Report from the Poor Law Commissioners on an Inquiry into the Sanitary Conditions of the Labouring Population of Great Britain. Implicitly this was represented by philosophy of Edwin Chadwick (1800–1890) who viewed the improvement of drainage, housing and water supply as an essential national economic good, as it prevented the early deaths of working men. The sanitation condition at that time was described:

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