The Layers of Research Design Introduction: The purpose of doing research is mostly to answer a question or to solve a problem. The research work is started by identifying what type of data is needed and sources of obtaining this data. There are a number of data collection techniques such as questionnaires‚ interviews and personal observation. Besides all these sources secondary data can also be used. The final decision about overall research design is represented by selection of technique(s) used
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Data Link Layer INTRODUCTION: Now a day’s communication is vital for the entire world‚ nothing happens without communication. The cell radio communication and wireless computer networks of GSM (Global System Mobile)‚ CDMA (Code Division Multiple Access) type are worldwide communication systems. All these communication systems are based on the reference model OSI-RM (Open System Interconnection-Reference Model) Description of OSI-RM System: OSI-RM is an International Standard ISO that defines
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Analysis and Separation of Organic Acids in White Wine Using High Performance Liquid Chromatography Atis‚ Arnelson Arwin G. and Gaitos‚ Gerald M. Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City Performed: December 9‚ 2011 Submitted: December 15‚ 2011 RESULTS AND DISCUSSION solutions containing increasing amounts of the organic acid. These solutions were contained in flasks numbered 5‚ 6‚ 7‚ 8‚ and 9. (Refer to
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CHEM 3152-003 Experiment 2: Fractional Distillation and Gas Chromatography Introduction: The purpose of this experiment was to separate a mixture of ethyl acetate (EtOAc) and toluene by using the method of fractional distillation and to analyze the fractions using gas chromatography (GC). ethyl acetate toluene Distillation is a method known as separating or purifying a liquid or mixture by vaporization and condensation. In a simple distillation‚ the liquids being separated boil below 150 0C
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Experiment 112-5 Thin Film Interference Introduction When two waves of equal intensity combine‚ the intensity of the resulting wave can be anywhere between zero and four times the intensity of the individual waves‚ depending upon the phase difference between them. When they are in phase (the maxima coincide with maxima and the minima coincide with minima)‚ maximum intensity results. When they are exactly out of phase (the maxima of one wave coincide with the minima of the other wave)‚ the
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Layers of the Grand Canyon During the earliest periods of the Grand Canyon formation where we have Tapeats sand stone‚ bright angel shale and muav limestone it would appear that there was a relatively shallow‚ warm sea. This is indicated by the presence of Trilobite fossils found in this layer which thrived in that environment. Trilobites were early animals that had exoskeletons that are usually the only part of them that is preserved in the fossil record. They were marine bottom feeders who thrived
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Table of Contents Part 1: General review of data link layer 2 a) Explain the working principles of the data link layer. 2 b) Is controlled access better than contention for media access control? Discuss. 2 c) Why is error detection important in this layer? What is being measured? 3 d) Identify three significant noises that can cause errors in data communication digital circuits. Briefly explain. 3 Part 2: General review of error correction 4 a) Why is cyclical redundancy
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three main layers also known as the Epidermis‚ Dermis‚ and the Hypodermis. The Epidermis is the outermost layer that shields the body and consists of four cells types and five distinct layers. The Dermis is right under the Epidermis which contains strong connective tissue. This layer also contains our hair follicles that help regulate our body temperatures‚ nerve endings which let’s us sense‚ and sweat glands which help the skin keep moist. Lastly‚ the Hypodermis also known as the “Fat layer”‚ it isn’t
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Five-Layer Density Column A density column consists of layers of liquids of different densities which do not mix with each other‚ and which are clearly distinguishable from each other. The highest density material is at the bottom of the column‚ and as you proceed up the column‚ the density of each successive layer decreases‚ with the lowest density layer on top. Three methods for construction of a five-layer density column are discussed in this write-up. All methods use the same five liquids. •
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Chromatography Experiment of the Drosophila Eye Pigmentation Pathway Introduction: How can the use of chromatography help explain single gene mutations of the drosophila melanogaster bio-synthetic pigment pathway? This experiment was meant to help connect the mode of inheritance with different eye color mutations and pinpoint where they occur in the pigment pathway. The drosophila eye color is a result of two bio-synthetic eye color pathways‚ this is expressed as a trait or phenotype‚ a multigene
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