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Sampling Methods

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Sampling: It is the procedure by which some members are selected as representative of the entire population. Some sampling terms: Population: Collection of units sharing common characteristics  Ex : Finite: Possibility of counting all units such as students in a school. Infinite: such as RBCs of an individual . Sample: A subset of a population obtained to investigate properties of the parent population. Target population: Population upon which the results of the study will be generalized. Sampling population: Population from which the sample was taken. Sampling unit: Population unit used for sampling Subject under observation on which information is collected such as: Children events. years, hospital discharges health. Study population: The population selected to be sampled it is a subset of the target population Sampling frame: Any list of all the sampling units in the population: List of households, health care units. Sampling scheme: Me

Fatty acid Metabolism Cont.

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In the previous post of Fatty acid metabolism, we talked about first part of oxidation of fatty acids with even number of carbon atoms. SO, today we will talk about second part of oxidation relating to odd number of carbon atoms of Fatty acids, unsaturated fatty acids and ω-oxidation. Fatty acid oxidation (odd number): This process proceeds by the same reaction steps as that of an even number of carbon atoms until final 3 carbons are formed no 2 carbons as in even number. This compound is called Propionyl CoA .  Propionyl CoA is metabolized on 3 pathways:    a) Propionyl CoA is carboxylated into D- methylmalonyl CoA by propionyl CoA carboxylase which requires coenzyme called biotin . b) D-methylmalonyl CoA is converted into L-methylmalonyl CoA by methylmalonyl CoA racemase. c) Carbons of L-methylmalonyl is rearranged forming succinyl CoA which enters TCA cycle by enzyme methylmalonyl mutase which requires Coenzyme called Vitamin B12 . When there is de

Aim VS Objectives & Variables types

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Aim is general statement written in broad terms, explaining what is intended to achieve. General characteristics of Aim: a)       General or overall purpose. b)      Has long range or no time bound. c)       Has end point results. (endpoint means that in the final the research is beneficial or not). Objectives are concrete targets needing to be fulfilled or what you need to do to attain desired result (aim). General Characteristics of objectives: (SMART) a)       S pecific: means it must be clear what you are trying to achieve such as I want to increase my profits. b)      M easurable: means it must include quantifiable elements such as I want to increase my profits by 30%. c)       A greed : means that targets need to be agreed by different people who are involved in process such as I want t partners and it is agreed.    o increase my profits so I discuss the target with my d)      R ealistic: means that target must be achievable so that people are moti

Some Essential nutrients for body

1)      The nutrients can be classified into six groups. They are: Carbohydrates, Proteins, Fats, Vitamins, Minerals and Water. 2)      Nutrients are classified according to amount that person needs to consume daily into: a) Macronutrients such as carbohydrates, proteins, fiber, fats and water, b ) Micronutrients such as vitamins and minerals. 3)      Food is classified into: a) Body-building food or Growing food : Proteins , b ) Energy-giving food : fats and carbohydrates , c) Protective food such as vitamins and minerals . 4)      Carbohydrates are classified into: a) simple (mono- and disaccharides), b) complex (polysaccharides). 5)      Mono- and Disaccharides can be used easily by body while Poly-one have to be broken into simple sugar such as cellulose and starch. 6)      The Carbohydrates form about 50 to 70 percent of our food. 7)      The main sources of carbohydrates are bread, maize, macaroni, banana, sweet fruits, and honey. 8)      Proteins