cubical form we know as a Rubik’s cube! However‚ Rubik did not give the cube his name—he called it the “Magic Cube.” It was renamed the Rubik’s Cube by the Ideal Toy Corporation in 1980. Little did Rubik know that his cube would become a sensation around the world with the first world championship held in his native‚ Budapest‚ in 1982‚ with a sixteen year old Vietnamese girl winning the competition‚ unscrambling the Cube in 22.95 seconds. Solving a Rubik’s Cube requires some study and decision-making
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Surfaces and Guideways Introduction Basic Components Structural Design of Pavements Portland Cement Concrete Design Asphalt Concrete Pavement Design THE END Thank you Surface - the term surface refers to Roadway pavement which includes Portland Cement concrete‚ treated soil (gravel or other aggregate materials) and Asphalt concrete Guideway - A track along which Automated Transit Vehicles are guided. Guideway include monorails‚ concrete guideway for rubber tired vehicles and conventional duo-rail
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Surface Water Pollution Freshwater makes up less than three percent of earth’s water‚ but is the source of virtually all drinking water.55 percent of that water comes from reservoirs‚ rivers‚ and lakes‚ These sources‚ called surface water‚ are vulnerable to pollution discharged out of pipes and precipitating out of the air but the primary source of their pollution today is runoff‚ pollutants washing off the land. These nonpoint or scattered sources are not easily traceable. fertilizers used
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Simple diffusion and facilitated diffusion both _______. move solutes with their concentration gradient Which of the following would decrease the rate of facilitated diffusion? decreasing the number of carrier proteins What happens to facilitated diffusion when the protein carriers become saturated? The maximum rate of transport will occur. What happened when sodium chloride was added as a solute in the left beaker? There was no change in the transport rate of glucose. Which of the following
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DIFFUSION AND OSMOSIS: WHAT’S TO EXPECT? Diffusion and osmosis are very important in biological process. Diffusion is the movement of molecules or ions from a region of their high concentration to a region of their low concentration. Osmosis is the diffusion of water molecules across a semipermeable membrane. To gain a better understanding of diffusion and osmosis‚ we examine multiple experiments to show diffusion and osmosis in animal cell‚ plant cell and synthetic cell. In our first experiment
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solutes move via passive diffusion through the plasma membrane. Diffusion is a process where molecules move from an area of high concentration to an area of low concentration. How quickly diffusion occurs is dependent on several factors‚ such as temperature‚ particle size‚ and the concentration difference on either side of the membrane. Testing the hypothesis relating to the effect of molecular weight to the diffusion rate‚ agar plate set-up was used to observe the diffusion of different substances
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designers. Arrangements of cells and atoms‚ their repeating patterns‚ the rhythms of their form forces architects to question the building components‚ just as Otto did by the inspiration of radiolarians. In a way to continue in the search of the effect of these self-generated dynamic forms‚ Hensel‚ Menges and Weinstock provides information about the methods that can be followed to apply the inspirations from biology to architecture in the intro of the book Emergent Technologies and design: Towards
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Simple Diffusion Activity 1: Simulating Simple diffusion 1. What is the molecular weight of Na+? 22.99 or 23 2. What is the molecular weight of Cl-? 35.45 3. Which MWCO dialysis membranes allowed both of these ions through?50‚100‚ 200 4. Which materials diffused from the left beaker to the right beaker? Urea‚ NaCl and glucose diffused 5. Which did not? Why? Albumin was too large to diffuse into the right beaker. Activity 2: Simulating Dialysis 6. What happens to the urea concentration
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Diffusion Through Membranes IB Biology 11 Diffusion Through Membranes OBJECTIVES In this experiment‚ you will Use a Conductivity Probe to measure the ionic concentration of various solutions. Study the effect of concentration gradients on the rate of diffusion. Determine if the diffusion rate for a molecule is affected by the presence of a second molecule. BACKGROUND Diffusion is a process that allows ions or molecules
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SuperHydrophobic Surface Fabrication The research plan must include the following: I. Statement of the Problem/s: This study aims to Specifically answer these questions: 1. What chemicals or substances would be effective to use? 2. Where else can we apply the monolayer‚ other than plastic‚ using the same procedures? 3. How long will this effect last? 4. What liquids can it repel besides water? II. Hypothesis: a. There is a significant difference in the results using varied
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