...often with a radiating fibrous structure and banded in various shades of green. The beautiful green crystal has been used since ancient times in inlay work and in carvings of churches and cathedrals as it is found in huge boulders (Bonewitz pg 125). It was also used as a pigment for paint during the 15th century in Egyptian tomb paintings and much later in European art. The Victorians were also great admirers of opaque jewelry stones, and malachite was chosen to be one of their favorites, sometimes choosing it to set in gold. It also occurs as delicate fibrous aggregates and as concentrically banded stalactites (Bonewitz pg 125). Malachite occurs in the altered zones of copper deposits, where it is usually accompanied by lesser amounts of azurite. It is primarily valued as an ornamental material and gemstone. Single masses that weighed up to 51 tons were found in the Ural Mountains of Russia in 19th century (Yee). While doing researcher I was very surprised to learn that” Malachite, which can occur in nature...
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...Sanchez is the 8th most popular Hispanic last name. I like my name, but it is a very common male name. Also, my nickname is Pedrito, a sweet form of the Spanish name Pedro. My relatives and friends call me Pedrito, but they never complement it because it is not a very distinguished name. I do not feel my name causes people to treat me in a particular way, but I love my name because it is special to me. Because my name is derived from the Greek word “Petra” meaning “stone, rock”, I could associate my name with any rock. However, there are many types of rocks, and there are a wide range of colors of rocks, depending upon the presence of minerals. If I have to choose an specific color, blue is my favorite. There is a rock named “azurite”, an Arabic word meaning blue. Searching the internet I found that there is a plant named San Pedro. This plant is a cactus that grows in the desert. The plant is light to dark green. I also found a place in California named San Pedro Rock. It is a huge rock formation emerging from the depths of the sea. My name have different meanings and associations. I do not want to change my name; Peter was the name given by Jesus to one of his disciples. Even though I know that my name is very common, if I change it I would feel that I am not the same person. So, if I have to choose, I would prefer Peter as my name (English...
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...This paper will be focussing on the comparison between two paintings from the Renaissance period. The two paintings that will be discussed are The Birth of Venus by Sandro Boticelli and The Feast of the Gods by Giovanni Bellini. The comparison will be mainly based on the form of work that includes elements such as materials used, technique and colors, and also on the interpretations of the artwork. We will first look at Boticelli’s The Birth of Venus. It is probably considered to be Boticelli’s most famous piece of artwork. The painting is believed to have been produced between the periods of 1485-1486 (wikipaintings.org, 2013), making it from the Middle Ages Renaissance. He started the painting after being commissioned by the Medici family of Florence, Lorenzo di Pierfrencesco de Medici to be specific (Italian-renaissance-art.com, 2013). The painting portrays the birth of the goddess Venus, emerging from the sea as a fully grown women and being afloat on a seashell. The painting also shows a couple symbolizing the wing blowing her towards the shore. Venus is also seen to be greeted by a woman who seems to represent the spring. The painting is now displayed in Uffizi Gallery in Florence, Italy. The Feast of the Gods by Giovanni Bellini was Bellini’s last great painting (Kren & Marx, 2013). It is among the very few paintings that he worked on canvas. The Feast of the Gods was completed in 1514 (National Gallery of Art, 2013) after being commissioned by the Duke of Ferrara...
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...carving, it was time to paint. They primarily used red for flesh, black for hair, and white for clothes. Next they added background color around the figures. Last of all, they added details and texts with black. They used many different utensils for their art. They used local and imported materials like wood, metal, and stone. The grid mentioned briefly in the last paragraph was traced by strings dipped in red paint. The tools to carve reliefs were the following: bronze chisels, wooden mallets, and stone blades. Paint brushes were made out of vegetable materials like reeds or bundles of grass. Most of the paint’s pigments come from local minerals. White came from gypsum, black from carbon, red and yellow from iron oxides, blue and green from azurite and malachite. The minerals were first ground and mixed with an animal or plant based glue. Then they were applied to the walls in either a single layer or layered to make subtle effects or other colors. Today, many people marvel at what is still left of the ancient Egyptians’ art. We can learn a lot from the scenes on tomb’s walls. Many different paintings and sculptures have been taken to museums all over the world. And Egypt’s artwork bring thousands of tourists to Egypt each year. ...
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...Chapter 1 Inroduction Paint History Chapter 1 1.1 Paint History: Paint is one of the oldest synthetic substances known, with a history stretching back into prehistoric times. Prehistoric man made it more than 35,000 years ago as they mixed clays and chalks with animal fats and used these paints to depict their hunts on cave walls. By 2500BC, Egyptians had improved the technology by developing a clear blue pigment by grinding azurite, gums, wax and egg white as binders and solvents for their paints. Greeks learnt to blend paints with hot wax, rather than water, making paint both thicker and easier to spread. By this time, colours were available from natural and synthetic sources, one of the most interesting being a purple pigment made from heating yellow earth till it turned red and then plunging it into vinegar. In the eighteenth century, paint factories began to open in Europe and America, and by the nineteenth century, mass production had brought prices down where houses began to be painted. In the twentieth century, paint manufacturing and its function is widely understood especially from chemical point of view, meaning that paint manufacture has finally moved from being an art to being a science. 1.2 Paint Importance and Its Production: Paints are used for the protection and appearance enhancement of houses, buildings, cars, ships and many more. They are used as a safety feature to grab person attention like in lane markings on road and...
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...ANATOMY AND PHYSIOLOGY- 2013 Draft v4 7-3-12 1. DESCRIPTION: Understand the anatomy and physiology of the nervous, excretory and digestive system. A TEAM OF UP TO: 2 APPROXIMATE TIME: 50 Minutes 2. EVENT PARAMETERS: Each team may bring only one 8.5" x II" two-sided page of notes that contain information in any form from any source and up to 2 non-programmable, non-graphing calculators. 3. THE COMPETITION: Students should know the basic anatomy and physiology of the nervous, excretory and digestive systems and how aging and specific diseases affect them. Process skills expected may include data collection, making observations, inferences, predictions, calculations, analyses and conclusions. The test may include various formats (e. g., timed stations, written test, PowerPoint slides, anatomical specimens, etc.) for the following topics: a. DIGESTIVE SYSTEM - All levels should know: 1. Functions ofthe digestive system 11. Basic anatomy of the component parts of the alimentary canal and accessory organs of digestion iii. Anatomy of the four layers ofthe wall of the alimentary canal IV. Comparison of the lining of the esophagus, stomach, small intestine and large intestine v. Compare and contrast mechanical and chemical digestion vi. Physiology of chemical digestion of proteins, fats and carbohydrates vii. The effects of exercise on the digestive system viii. The diseases on each level from the cell to the whole person as listed: stomach & duodenal ulcers, cancers of the digestive...
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...Chemistry Modern Analytical Chemistry David Harvey DePauw University Boston Burr Ridge, IL Dubuque, IA Madison, WI New York San Francisco St. Louis Bangkok Bogotá Caracas Lisbon London Madrid Mexico City Milan New Delhi Seoul Singapore Sydney Taipei Toronto McGraw-Hill Higher Education A Division of The McGraw-Hill Companies MODERN ANALYTICAL CHEMISTRY Copyright © 2000 by The McGraw-Hill Companies, Inc. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a data base or retrieval system, without the prior written permission of the publisher. This book is printed on acid-free paper. 1 2 3 4 5 6 7 8 9 0 KGP/KGP 0 9 8 7 6 5 4 3 2 1 0 ISBN 0–07–237547–7 Vice president and editorial director: Kevin T. Kane Publisher: James M. Smith Sponsoring editor: Kent A. Peterson Editorial assistant: Jennifer L. Bensink Developmental editor: Shirley R. Oberbroeckling Senior marketing manager: Martin J. Lange Senior project manager: Jayne Klein Production supervisor: Laura Fuller Coordinator of freelance design: Michelle D. Whitaker Senior photo research coordinator: Lori Hancock Senior supplement coordinator: Audrey A. Reiter Compositor: Shepherd, Inc. Typeface: 10/12 Minion Printer: Quebecor Printing Book Group/Kingsport Freelance cover/interior designer: Elise Lansdon Cover image: © George Diebold/The...
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