The food borne illness I have chosen is salmonella. Question 1: What is the infectious agent (pathogen) that causes this infectious disease? The infectious agent (pathogen) that causes salmonella is called salmonella enteriditis. The bacteria is larger than a virus; but‚ is visible to the eye with the microscope. It is rod-shaped‚ gram negative‚ non-motile bacteria that does not form spores. Interestingly enough it communicates to its fellow bacteria via AHL. It infects the cell‚ multiplies
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Abstract The assignment is to compare and contrast 4 soil profile from field observation. ------------------------------------------------- Geography Assignment ------------------------------------------------- Soil Profile Geography Assignment Title: Soil Profile Aim: To Compare and contrast 4 soil profile to each other and also to the true soil profile. Date:12th October 2012 Introduction Soil is a natural body of animal‚ mineral and organic constituents differentiated
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When I was researching for this essay explaining what soil and water conservation means to me‚ I found two quotes that really stuck out to me. One written by Franklin D. Roosevelt stated‚ “A nation that destroys its soils destroys itself. Forests are the lungs of our land‚ purifying the air and giving fresh strength to our people.”‚ and another that was written by an unknown author read‚ “Water is life’s mater and matrix‚ mother and medium. There is no life without water.” I am not sure about you
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Soil is one of the main elements in the environment‚ it covers most of the dry part of the Earth’s crust‚ and the content of the materials‚ including salts‚ it is very important for the green vegetation cover on earth. On the other hand soil is one of the main components of construction‚ study of soil in the workplace is one of the first steps in the beginning of the project‚ and the lack of knowledge of soil characteristics and types and how to deal with it may lead to the failure of projects in
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CE 353 Geotechnical Engineering Dr M. Touahmia 6 Soil Compaction Lecture Outline: 1. 2. 3. 4. 5. 6. 7. General Principles Standard Proctor Test Factors Affecting Compaction Modified Proctor Test Field Compaction Measurement of Field Compaction Special Compaction Techniques Textbook: Braja M. Das‚ "Principles of Geotechnical Engineering"‚ 7th E. (Chapter 6). 1 General Principles What is compaction? • Many types of earth construction‚ such as roads‚ railways
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A soil horizon is a layer parallel to the soil surface‚ whose physical characteristics differ from the layers above and beneath. Each soil type has at least one‚ usually three or four horizons. Horizons are defined in most cases by obvious physical features‚ chiefly colour and texture. These may be described both in absolute terms (particle size distribution for texture‚ for instance) and in terms relative to the surrounding material‚ i.e. ‘coarser’ or ‘sandier’ than the horizons above and below
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Title L6 – Soil Permeability – Constant Head Test Introduction Permeability is measured in term of water flow through the soil in a given time. The soil permeability is a very important factor to study the behavior of soil in its natural condition with respect to water flow. The size of pore space and interconnectivity of the spaces help determine permeability‚ so shape and arrangement of grains play a role. Often the term hydraulic conductivity is used when discussing groundwater properties
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Kiran Desai’s HULLABALOO IN THE GUAVA ORCHARD is the whimsical story of a young man who escapes from the comical confines of life in the sleepy‚ R. K. Narayan-inspired North Indian town‚ or city‚ of Shahkot for the no less comical freedom of life in a guava tree. Once there‚ the previously timid Sampath finds himself at the center of an adoring crowd of pilgrims who mistake his knowledge of their private affairs (gleaned from reading their mail during his previous life as a lowly postal clerk) for
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Kenneth R. Sagum May 7‚ 2013 FR1 NATSCI1 “Effects of Soil Erosion in the Philippines” The soil is among our most precious resources‚ yet we often take it for granted or destroy it by making it susceptible to soil erosion. In the Philippines‚ for example‚ 22 provinces had been reported to have "alarming" soil erosion rate. Among those that had been losing their topsoil were Cebu‚ Batangas‚ Marinduque‚ Ilocos Sur‚ and La Union. This means that 58 per cent of the country’s total
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Soil Salinity Salinity in both the rivers and on the land is one of the main and most costly results of overclearing and irrigation. Salinity is caused by changes in the delicate balance between surface water and groundwater systems. A small increase in the infiltration of water from the topsoil to the groundwater‚ due to rainfall or irrigation‚ can result in a dramatic rise in groundwater pressure and watertable levels. The trees of the open forests are now replaced by shallow-rooted crops and
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