B. Yeats‚ 1921 TEACHER ’S INTRODUCTION Between 1845 and 1850‚ more than a million Irish people starved to death while massive quantities of food were being exported from their country. A half million were evicted from their homes during the potato blight‚ and a million and a half emigrated to America‚ Britain and Australia‚ often on-board rotting‚ overcrowded "coffin ships". This is the story of how that immense tragedy came to pass. The necessary historical and political context for a
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moving in one direction equals to the amount of molecules moving in the other direction. There are three types of solutions to diffusion: isotonic‚ hypertonic‚ or hypotonic. When the solutions have the same concentration of solutes‚ they are isotonic. When the solutions differ in their solute concentration‚ the solution with more solute is hypertonic to the other solution. The solution that has less solute is hypotonic
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that when there was an increase in the sodium chloride concentration the mass of the potato prisms declined. At the zero percent concentration there was an increase of mass by 1.75%‚ from there the 1%‚ 3%‚ 5% and 10% begun on a downward trend with the percentage change in mass declining. The graph was on a steady decline from 0% being the highest point with a change of mass of 1.75% finishing with the 10% solution on a decline of -12.28%. From observing the scatter plot the data points were not far
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"wonderful year." The phenomenon was observed as early as 1765‚ but not described or studied in detail until the botanist Robert Brown’s research in 1827. Brownian motion is named in honor of his work. As a botanist‚ Brown first observed the effect in pollen floating in water‚ where it is visible with the naked eye. Through experimentation‚ Brown determined that the specks of pollen were not propelling themselves independently‚ but rather that their motion was pseudo-random. Jean Perrin‚
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Executive Summary This is the term project for the course Marketing 417 on the topic of producing a business proposition for an export product. The product selected is Frozen Processed Potato‚ specifically frozen French fry. The report begins with a brief country profile of Bangladesh. Then the trade statistics regarding the frozen food export sector of Bangladesh is discussed briefly. The company profile is presented in the third part. The name of our imaginary company is Qualité Nourriture
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Making a Potato Powered Light Bulb Materials: A large potato Two pennies Two zinc-plated nails or screws Three pieces of copper wire A very small light bulb or LED light 1) Get a potato and cut it in half. Then make a small slit in each half just big enough to put a penny into. 2) Cut two pieces of copper wire and wrap one around one of the pennies a few times‚ and wrap the other one around the other penny a few times as well. 3) Take a third piece of copper
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Osmosis Experiment Dennis M. Feliciano Grand Canyon University BIO100L Biology Concepts Lab June 25‚ 2011 Osmosis Experiment Materials Grapes (unblemished) Raisins (larger is better) Water Salt Four small containers (i.e.‚ drinking cups or clear glasses) A metric ruler Methods and Procedure Place 1 cup (236 ml) of water in each of the 4 containers. In 2 of the containers‚ add 1 tablespoon (14.8 ml) of table salt and mix well. Measure the length and width of a raisin and place
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2.3. Membranes and modules for forward osmosis: 2.3.1. FO Membranes Generally‚ any dense‚ non-porous‚ selectively permeable material can be used as a membrane for FO. Such membranes have been tested (in flat sheet and capillary configurations) in the past for various applications of FO. In early studies‚ the researchers applied various FO membrane materials‚ including bladders of pigs‚ cattle‚ and fish; collodion (nitrocellulose); rubber; porcelain; and goldbeaters’ skin [36]. By 1960‚ Loeb and
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When the Irish Potato Famine Struck Ireland On a sunny morning in 1845‚ Irish farmers were going to check their crops. A farmer named Abraham Fitz found black potatoes in his fields. He thought it may be only the one‚ so he moved over 4 rows and dug another potato out of the ground. This one was black and rotten. This causes Abraham to travel to his neighbors house and ask about their potatoes. His neighbor’s potatoes were black‚ rotten‚ and giving off a foul stench. This would later be discovered
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DIFFUSION AND OSMOSIS Chapter 3 of your textbook explains diffusion and osmosis. Diffusion is simply the net movement of atoms or molecules from a region of higher concentration to a region of lower concentration. The force behind the movement is heat or kinetic energy (also called Brownian motion). Diffusion occurs when you spill water on the carpet floor and it spreads out‚ or when you open a bottle of perfume and it leaves the bottle and spreads throughout the air in the room. Osmosis is a similar
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