signal in the wavelet domain and all data operations can be performed using just the corresponding wavelet coefficients. The major issues concerning the design of this Wavelet based speech coder are choosing optimal wavelets for speech signals‚ decomposition level in the DWT‚ thresholding criteria for coefficient truncation and efficient encoding of truncated coefficients. The performance of the wavelet compression scheme on both male and female spoken sentences is compared. On a male spoken sentence
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CS304 Database System Concepts Assignment 3 Due: April 16‚ 2013 (Please submit hard copies to class or to Zheng on due date.) Name: Matric No: Q1. (10 points) Consider the E-R diagram in Figure 1‚ which models an online bookstore. a. List the entity sets and their primary keys b. Suppose the bookstore adds music cassettes and compact disks to its collection. The same music item may be present in cassette or compact disk format‚ with differing prices. Extend the E-R
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can be irritating to skin and eyes. If you spill any on yourself or your clothes‚ wash it off immediately and tell your teacher. Observe what happens. RECORD in notebook. Liver contains the enzyme catalase‚ which breaks down hydrogen peroxide (H2O2) to water (H2O) and oxygen gas (O2). When hydrogen peroxide is broken down by catalase‚ bubbles of oxygen gas are released. 2. With your teacher’s guidance‚ select the proper equipment and technology to measure catalase activity—a filter-paper
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Test tube one 1was filled with 5.0mL of buffer‚ 2.0mL of H2O2‚ and 1.0 mL of guaiacol. Tube 1 will be to calibrate the spectrometer. Tube 2-3 will be filled with Dil 0.25‚ tube 2‚ 4‚ 6 & 8 will contains 2.0 of 10mM H2O2 and 1.0 of 25mM of guaiacol. Tube 3 will contain 4.75 of 0.1 Buffer in mL and 0.25 of enzyme extract in mL. Tube 4-5 will be filed with Dil 0.5‚ but tube 5 will contain
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COLLIGATIVE PROPERTIES 1. Calculate the vapor pressure when 10.o mL glycerol (C3H8O3) is added to 500.0 mL water at 500C. At this temperature the vapor pressure of pure water is 92.5 torr and its density is 0.988 g/mL. Density of glycerol is 1.26 g/mL. 2. Calculate the boiling point and freezing point of the solution if 1.00 kg of ethylene glycol (C2H6O2) is added to a car radiator which contains 4450 g water. a. Kb of water = 0.512 oC/m at normal boiling point of 100oC b. Kf of water
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(g/mol) o n = N/NA n = number of moles (mol) N = specific number of particles NA = Avogadro’s Constant; 6.02 x 1023 Empirical (Simplest) Formula o Represents smallest whole number ratio of the atoms in a compound E.g. empirical formula of H2O2 is HO o To find empirical formula Determine mass of each element in the compound‚ or use percentage composition and assume a 100 g sample Find the number of moles of each element (n = m/M) Find the ratio among the mole values by dividing
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There are eight types of chemical reactions. These eight reactions are Decomposition‚ Composition‚ Acid/Base‚ Synthesis‚ Single-Replacement‚ Double-Replacement‚ Precipitation‚ and Redox. Though these eight could be referred to as the same due to them being chemical reactions. They are actually very different. An example of this difference is Decomposition and Synthesis. Decomposition is when a compound is broken into smaller chemical species while a Synthesis reaction is two or more chemical species
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place it on a slide. B. Using a micropipette‚ place a few drops of hydrogen peroxide (H2O2) on top of the liver. C. Observe the solution for a possible reaction‚ indicated by bubbling. Record the results. 2. Test for the presence of catalase in lunch meat. A. Cut a piece of roast beef lunch meat approximately 1 cm by 1 cm and place it on a slide. B. Using the pipette‚ place a few drops of hydrogen peroxide (H2O2) on top of the lunch meat. C. On the table provided below‚ record the results. D.
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Pre – Lab Questions 1. A decomposition reaction may be defined as any reaction in which one reactant‚ a compound‚ breaks down to give two or more products. Write the balanced chemical equation for the decomposition of water to its elements. 2H2O(l) 2H2(g) + O2(g) 2. (a) Assign oxidation states to the hydrogen and oxygen atoms in each substance in the above chemical equation. The oxidation state of H2(g) and O2(g) is zero‚ because they are in their normal state. (b) Based
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Investigation on the effects of Temperature‚ pH levels‚ and Enzyme Concentration on the reaction rate of the Decomposition of Hydrogen Peroxide by Catalase The purpose of this investigation is to figure out how temperature‚ pH‚ and enzyme concentration affect the reaction rate of an enzyme. It’s important to understand how certain factors affect enzymes because of their crucial role in the metabolic processes of life. Enzymes lower the activation energy necessary for a chemical reaction to
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