Extraction of metals The History of Metals. Metals have been used by people for many thousands of years. Gold and silver‚ found as native metal‚ were used both as jewellery and as a status symbol - nothing new there. These metals were known in the Stone Age‚ but gold and silver are too soft to be used as tools. The first really useful metal to be discovered was bronze. This began the Bronze Age. Bronze was used extensively for tools and weapons in Asia and Africa from 4‚500 B.C. (6‚500 years
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Extraction Report For experience 4c we were supposed to determine which one is the organic layer in three different tubes that has two layers. To determine which is aqueous (water) or organic‚ I used the technique of adding droplets of water to each tube. If the layer is water‚ then the drops of added water will dissolve in the aqueous layer and increase it’s volume. If the added water form droplets or a new layer‚ then it is the organic layer. Tube 1 (water and n-butyl chloride)‚ after adding
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DNA Assignment Keshia Yeates BIOLOGY 4U 1. DNA molecule with a length of 2m can fit inside a nucleus that is invisible by the naked eye by coiling around itself several times. It continues to coil even more (Supercoiling)‚ arranging itself on histones‚ which are proteins. 2. Nitrogen bases determine the traits of living organisms by coding the 20 amino acids. The order of the amino acids determines what protein is made; therefore‚ proteins are the makeup of all living organisms. Proteins regulate
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1 Automatic Keyphrase Extraction and Segmentation of Video Lectures Arun Balagopalan‚ Lalitha Lakshmi. B‚ Vidhya Balasubramanian‚ Nithin Chandrasekharan‚ Ashwin Damodar Amrita School of Engineering‚ Amrita Vishwa Vidyapeetham‚ Coimbatore‚ India Abstract—Keyphrases are essential meta-data that summarize the contents of an instructional video. In this paper‚ we present a domain independent‚ statistical approach for automatic keyphrase extraction from audio transcripts of video lectures
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Extraction of Caffeine from Tea Leaves Jaybee Balilea‚ Sharmaine Baysic‚ and Maria Anjelette Patricia Belen 3BIO7‚ Department of Biology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Extraction is a technique for isolating and purifying organic substances. In this technique‚ a solution is combined thoroughly with a second solvent that is immiscible with the first solvent. The solute is extracted from one solvent into the other because it is more soluble in the second solvent
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TITANIUM EXTRACTION ASSIGNMENT 1 1.TiO2+Cl2-----------------TiCl4+O2 2.Why is an atmosphere of argon used for this reaction ? The titanium (iv) chloride is added to a reactor in which very pure sodium has been heated to about 5500c -everything being under an innert argon atmosphere.During this reaction the temperature increases to about 10000 c . The reaction is carried out in an argon atmosphere to prevent magnessium and sodium from reacting with oxygen in the air. 3.Another gas used instead of
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algorithms are implemented using C++ programming language‚ some algorithms use available functions of ArcObjects in ArcGIS. Based on VB .NET and ArcObjects programming‚ a graphical user’s interface has been developed to integrate and organize shoreline extraction routines into a software package. This product represents the first comprehensive software tool dedicated for extracting shorelines from remotely sensed data. Radarsat SAR image‚ QuickBird multispectral image‚ and airborne LiDAR data have been used
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The poem‚ “Monologue for an Onion” written by Sue Kim‚ the onion is a metaphor and is the whole poem is written about it and based off of it. The basic main viewpoint of the poem is about the feelings and thoughts that onion experiences when being handle by the person or more specifically when it is being cut. The poem revolves around the whole idea of how the onion feels and thinks as the person cuts away at it and how it reflects on the actions of the person and the person themselves. Sue Kim’s
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MONOLOGUE FOR AN ONION: AN ANALYSIS Cutting an onion breaks cells in its skin causing a reaction that results to the formation of volatile sulfur compound which‚ when mixed with tears coating our eyes‚ becomes sulfuric acid. This triggers the tear ducts to produce more tears to alleviate the imbalance in acidity the irritant has caused; the longer the eyes are exposed to the acid the greater the quantity of tears produced. Sue Kwock Kim uses this certain property of an onion to tackle a specific
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Recombinant DNA Report Our final annotated gel image sums up the successful experiments we performed over the course of 8 weeks. The image will be referred to throughout the report: Lane 1: 10 µL of ladder. Lane 2: 20 µL of a pAMP- EcoRI/HindIII double digestion. Within the double digestion‚ one can find 8 µL of pAMP‚ 1 µL of the EcoRI enzyme‚ 1 µL of the HindIII enzyme‚ 5 µL of 10x Buffer 2.1‚ and 35 µL of water. A total volume of 50 µL was present
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