The Lycurgus Cup – A Roman Nanotechnology Ian Freestone1‚ Nigel Meeks2‚ Margaret Sax2 and Catherine Higgitt2 Cardiff School of History and Archaeology‚ Cardiff University‚ Cardiff CF10 3EU‚ Wales UK 2 Department of Conservation‚ Documentation and Science‚ The British Museum‚ London WC1B 3DG‚ UK 1 Introduction The Lycurgus Cup (fig 1) represents one of the outstanding achievements of the ancient glass industry. This late Roman cut glass vessel is extraordinary in several respects‚ firstly in
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Sept 27‚ 2010 Chapter 4 * With four valence electrons‚ carbon can form four covalent bonds with a variety of atoms * This tetra valence makes large‚ complex molecules possible * Fundamental groups: Alkanes and Alkenes * The electron configuration of carbon gives it covalent compatibility with many different elements * The valences of carbon and its most frequent partners (hydrogen‚ oxygen‚ and nitrogen) are the “building code” that governs the architecture of living
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2 (a) DRS-UV spectrum of PoPD@Mg-Al LDH (b) Photoluminescence of PoPD@Mg-Al LDH (c&d) FESEM images of Mg-Al LDH and PoPD@Mg-Al LDH Field Emission Scanning Electron Microscopy (FESEM) Fig.2 (c&d) displays the surface morphology of the as-synthesized Mg-Al LDH and PoPd fabricated Mg-Al LDH was examined using scanning electron microscopy (FESEM). Fig. 2c shows the FESEM image of pure LDH displays the formation of petals-like structure and furthermore the petals are arranged to get together
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the applied load‚ propagation in stage II is perpendicular to the load direction‚ as depicted in Fig. 1. An important characteristic of stage II is the presence of surface ripples known as “striations‚” which are visible with the aid of a scanning electron microscope. Not all engineering materials exhibit striations. They are clearly seen in pure metals and many ductile alloys such as aluminum. In steels‚ they are frequently observed in cold-worked alloys. Figure 2 shows examples of fatigue striations
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It is set to encompass all the technological aspects that we have today and is nothing but the extension of scientific applications to a microscopic scale and thereby reaching closer to perfection if not right there. 1.1 VIEW FROM AN ELECTRON MICROSCOPE [pic] [pic] [pic] [pic] 2. MECHANICAL ENGINEERING AND NANOTECHNOLOGY - THE COMMON CHORD The mechanical applications of nanotechnology are immense
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(eukaryotic) Algae (eukaryotic) Virus (acellular) Protozoan (eukaryotic) Helminth (eukaryotic) Most common infectious diseases worldwide Respiratory #1 AIDS #2 Diarrheal #3 Antonie van Leeuwenhoek Fashioned together a primitive microscope—he was the first to observe microorganisms Scientific method-an experimental system that answered questions objectively Hypothesis- tentative explanation to account for what has been observed or measured; predicts specific explanations that
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Exercise 1: Identifying Parts of a Compound Light Microscope Question A. Study and label the microscope parts in Figure 3. Microscope Parts Microscope Parts A EYEPIECE G MIRROR/ILLUMINATOR B TUBE H BASE C REVOLVING NOSEPIECE/TURRET I LONGITUDINAL CONTROL KNOB D OBJECTIVE LENS J TRANSVERSE CONTROL KNOB E STAGE K FINE ADJUSTMENT F DIAPHRAIGM L CASE ADJUSTMENT Microscopy Use and Function Exercise 2: Illuminated Pocket Microscope Questions A. Draw the image of the root
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ABSTRACT: Cutting and trimming of CFRP laminates with high dimensional accuracy is highly essential for applications like aerospace industry. Non-conventional machining techniques provide a good solution for this problem in which automation‚ precision and dimensional accuracy can be easily achieved. Among them‚ Abrasive Water Jet cutting proves to be a promising area since there is no possibility of thermal damage to the material. AWJ cutting belongs to the mechanical group of non-conventional techniques
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SENSE OF SIGHT…. The eyes are sensory organs. They keep the brain updated with information about is what happening around the body. Both contain millions of tiny sensors that send messages along nerves to the brain. Sensors in the eyes respond to light and‚ through the brain‚ let us see the world. Sensors in the skin respond to touch and allows us to feel. * * * * The seeing eye… Light enters the eye through the clear cornea. It then passes through the
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Investigatory Projects in Physics | Repulsorlifts as a Method of Stable Magnetic Levitation | Repulsorlifts were used in the study to find out if they can be used to replace the wheels of a conventional car. It was hypothesized that it will be able to lift a car using magnetic repulsion forces. The different magnets were tested individually with the usual tests for magnetic strength‚ size‚ and temperature increase‚ which were done in the preliminary testing. The prototype road and car were
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