THE ECONOMIC IMPACT OF INFORMATION TECHNOLOGIES AFTER THE FINANCIAL CRISIS Dale W. Jorgenson‚ Harvard University http://economics.harvard.edu/faculty/jorgenson/ Keynote Lecture to the Annual Conference of the Association des Économistes Québécois Hôtel Hilton du Casino du Lac-Leamy Gatineau‚ Québec May 19‚ 2011 INTRODUCTION TO THE WORLD KLEMS CONSORTIUM World KLEMS Consortium Formed August 19-20‚ 2010 What’s New? 70 NAICS Industries Covering 1960-2007 Before the Crisis The IT
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1. Hydrogen Name: Hydrogen Atomic number: 1 Atomic Weight: 1.00794 grams/mole Standard state: gas at 198 K Hydrogen is the lightest Hydrogen is the lightest element. It is by far the most abundant element in the universe and makes up above 90% of Universe by weight. Hydrogen as water (H2O) is absolutely essential to life and it is present in all organic compounds. Hydrogen is lightest gas. Hydrogen gas was used in lighter-than-air balloons for transport but is far too dangerous because
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Class 1 Metallic bonding: Found in metals and alloys‚ 1‚ 2‚ or 3 valence electrons that are not bound to any particular atom in the solid. They drift throughout the entire metal. This results in a sea of electrons. These free electrons result in good electrical and heat conductivity. Coordination number is 8 or 12 (number of nearest neighbors). Ionic Bonding Found in compounds that are composed of both metallic and nonmetallic elements. Metallic element gives up valence electrons to the
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CORROSION AND ITS CONTROL CORROSION * corrosion can be defined as the degradation of a material due to a reaction with its environment. * Degradation implies deterioration of physical properties of the material. This can be a weakening of the material due to a loss of cross-sectional area‚ it can be the shattering of a metal due to hydrogen embrittlement‚ or it can be the cracking of a polymer due to sunlight exposure. * Materials can be metals‚ polymers (plastics‚ rubbers‚ etc.)‚
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ENV100 Principles of Environmental Science Final Exam – Name: 1. The interdisciplinary study of humanity’s relationship with other organisms and the non-living physical environment is termed a) ecology b) sociology c) political science d) risk analysis e) environmental science 2. What activity/activities contribute(s) to making the human species the most significant agent of environmental change on Earth? a) continued population growth b) consuming non-renewable resources c)
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Hydrogen and the Noble Gases Hydrogen is the chemical element with atomic number 1. It is represented by the symbol “H”. It is an odorless‚ nonmetallic‚ tasteless and highly explosive gas. Hydrogen is the lightest and most abundant chemical element in the universe. It forms 1- ions when combined with metals‚ and 1+ ion when combined with non-metals to form acids. Hydrogen is “the fuel of life”; without it to combine with oxygen we would not have water. Water is made of two parts hydrogen
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halogen element Any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F)‚ chlorine (Cl)‚ bromine (Br)‚ iodine (I)‚ astatine (At)‚ and element 117 (temporarily named ununseptium [Uus]). They were given the name halogen‚ from the Greek roots hal- (“salt”) and -gen (“to produce”)‚ because they all produce sodium salts of similar properties‚ of which sodium chloride—table salt‚ or halite—is best known. Because of their great
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SL.NO: TITLE OF THE PAPER AUTHOR’S NAME ABSTRACT 1 Manufacturing an environmentally friendly PCB using existing industrial processes and equipment A. Ryan‚ H. Lewis Robotics and Computer-Integrated Manufacturing 23 (2007) 720–726 This paper investigates the possibility of utilising an additive screen printing process with conductive ink and adhesive together with a degradable substrate to identify whether this process offers a viable alternative to current subtractive methods of PCB manufacture
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Zirconium is a chemical element with the symbol Zr‚ atomic number 40 and atomic mass of 91.224. The name of zirconium is taken from the mineral zircon‚ the most important source of zirconium. It is a lustrous‚ grey-white‚ strong transition metal that resembles titanium. Zirconium is mainly used as a refractory and opacifier‚ although minor amounts are used as alloying agent for its strong resistance to corrosion. Zirconium forms a variety of inorganic and organometallic compounds such as zirconium
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← Muon ← Is created when a neutrino collides and combines with an H2O proton (weak force) ← Creates blue light ← High energy; travels faster than the speed of light (in water) ← Neutrino ← Type of particle: Lepton (like electrons and muons) ← Most abundant particle in the universe ▪ 1016 neutrinos are passing through your body at any point in time ← Theoretically discovered by Wolfgang Pauli (1930); actually discovered in 1955 ← Produced during nuclear reaction or changes
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