Diffusion is the process by which a particular phenomenon --- such as a contagious disease‚ a technological innovation or even an idea --- is spread from person to person over a period of space and time. One method of diffusion is known as expansion diffusion‚ which is broken down into three distinct types. Expansion Diffusion * Strictly defined‚ expansion diffusion is the process of spreading something from one place to another in an ever-expanding "snowballing" process. Expansion diffusion
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Why has the number of “millionaire cities” increased more rapidly in LEDC’s than MEDC’s in recent years? A millionaire city is a city with a population of over one million people. The number of millionaire cities is higher than ever before and is continuing to increase extremely fast. Recently the percentage of people living in urban areas has surpassed the number of people living in rural areas. This is due to a large proportion of people migrating to urban areas from rural areas. This is due to
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PhysioEx™ Lab: Cell Transport Mechanisms and Permeability Activity 1: Simple Diffusion Chart 1 Dialysis Results (Average Diffusion rate in mM/min) Solute Membrane (MWCO) 20 50 100 200 NaCl (—) 0.0150 0.0150 0.0150 Urea (—) (—) 0.0094 0.0094 Albumin (—) (—) (—) (—) Glucose (—) (—) (—) 0.0040 1) Which solute(s) were able to diffuse into the right beaker from the left? NaCl‚ Urea‚ Glucose 2) Which solute(s) did not diffuse? Albumin 3) If the solution in the left beaker
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What happened in Enron and Arthur Andersen? United States ’ seventh largest company Enron‚ with the slogan "Ask Why" was admired for its innovation‚ but it all ended up in bankruptcy and criminal matters. The company filed for bankruptcy in December 2001. This was one of the world ’s biggest corporate scandals in history. USA ’s seventh largest firm had in over sixteen years increased its assets from 10 billion to 70 billion U.S. dollars‚ and was by the stock market analysts from Wall Street
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. What is not obvious is what has happened to the American people. It isn’t just the commuters‚ whom we have come to visualize as a supine breed who have got on to the trick of suspending their sensory faculties twice a day while they submit to the creeping dissolution of the railroad industry. It isn’t just they who have given up trying to rectify irrational vexations. It is the American people everywhere. But notice that no one did. And the reason no one did is because we are all increasingly
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permeable membrane through a process of diffusion. The movement of a solute through this membrane is called dialysis . Diffusion is a form of passive transport. It is the movement of molecules from areas of higher concentration to those of lower concentration‚ until there is an even concentration. This movement is random because it is a result of kinetic energy. Diffusion is a slow process‚ but there are many factors that will affect it’s rate. The rate of diffusion will vary depending on the size of
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This morning‚ my daughter asked me what happened to the dinosaurs. "Why did they disappear?"‚ she asked while I was fetching her to school. Her teachers had told her that the dinosaurs disappeared millions of years ago after changing to other animals. She is six years old. The theory of evolution is increasingly being accepted as fact and taught to children as young as preschool. It is everywhere; in movies‚ in cartoons‚ at school‚ and even‚ in music classes. Children shows such as "Go‚ Diego‚ Go
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The effect of the molecular weight to the rate of diffusion Based on the experiments‚ sd f f f f s wrefwe fwe rfwjv rwefhnw fwer fwe fwef fwe fwe fwe fwef wef w fwe fwe From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Sucrose is the organic compound commonly known as table sugar and sometimes called saccharose. This white‚ odorless‚ crystalline powder has a pleasing‚ sweet taste. It is best known for its role in human nutrition. The molecule is a disaccharide derived from glucose
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How does Nuclear power work and what happened at Chernobyl? What would you do if your town had a nuclear power plant explosion? Would you help clean up or would you just leave town? I would help the people of my town by cleaning up. The chernobyl explosion was caused by an operator error‚ and cost a lot of money and hurt a lot of people. Nuclear power is made up of atoms that are constructed like a mini solar system. By the late 1950’s nuclear power was developed. There are two types of uranium
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Europe’s cities began to grow bigger and bigger just like the trades. When that happened Europeans started to learn many things and became to also learn human achievement. Then because of that art came into play which is classical art. The Renaissance started to be spread around when trade routes began to develop between Europe and Asia.
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