Fossil Fuel Consumption‚ CO2 and Its Impact on Global Climate Background: At the beginning of human history‚ we had to satisfy our energy needs (for food‚ heat and movement) by using our own muscle power and gathering or hunting naturally available plants‚ animals and wood. Each stage in the evolution of human society (the development of farming‚ domestication of animals‚ harnessing of wind and water power) increased the average per capita energy use‚ but it was the Industrial Revolution and the
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The year is 1904. The spectators hold their breath in anticipation as a horse‚ Hans‚ stamps his hoof on the blackboard—on which the whole alphabet was written—in front of him‚ picking out the letters H‚ N‚ and A. The audience sighs in relief. Dohna—the name of the officer standing before Clever Hans and his owner Herr Wilhelm von Osten‚ and to whom they have been introduced earlier. Von Osten reaches out his hand to Hans to give the horse a treat. Everyone claps‚ but they look in bewilderment at
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Greenhouse Effect Because of the transparency of the atmospheric gasses to visible light‚ sunlight is able to largely penetrate the earth’s atmosphere and reach the ground‚ where it is absorbed heated up‚ and then re-emitted in the arrangement of infrared radiation. In this
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Unit 5 Journal 1 Massachusetts Start Up Challange Unit 5 Sodaro Journal 1 I looked at the 2011 finalists and I reviewed the ideas that where presented. Of the six finalists I can say only one seemed even remotely worth winning. The collage magazine for women seemed a little weak as did the online custom clothing store. There are enough of those kinds of things around if you know where to look and the magazine just seems a little lack luster. The company looking to improve
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Life on Other Planets Life on other planets‚ Is there another titan planet out there that harbors life? Scientist have found two such planets in a neighboring but distant Solar System. Which planets are habitable and is there already life there or basically in general‚ “Is there life in outer space?” That is the question and debate among astrologists and scientist alike about this discovery of two planets that orbit the red dwarf star of Gliese 581 (Gliese 581c.eu). The fascination of intelligent
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IB SL Biology Study Guide Unit 5 – Ecology Emma-Louise Wich Communities and Ecosystems 5.1.1 Define species‚ habitats‚ populations‚ community‚ ecosystems and ecology. Species: a group of organisms that can interbreed and produce fertile offspring. Habitat: the environment in which a species normally lives or the location of a living organism. Population: a group of organisms of the same species who live in the same area at the same time. Community: a group of populations living and
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to the mouse as a quick substitute for some functions of the keyboard. There are various types of mouse operations such as point‚ click‚ double-click‚ right click‚ drag and so on. A cordless mouse users infrared remote transmission to communicate with the computer. Normally there is an IrDA (Infrared Data Association) port on the system unit to receive the signals sent by cordless mouse. A trackball is a pointing input device with a ball on the top. It is a type of upside-down mouse. The ball is manipulated
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using Ethernet cables. Once the network feed has been connected to the transmitter‚ and a constant power supply is established‚ a steady stream of radio‚ or infrared waves with be produced (both are electromagnetic waves). The vast majority of wireless LAN systems tend to rely on radio waves as the carries for their signals‚ because infrared waves tend to have a shorter distance at which they are able to transmit‚ and are more easily interrupted. Radio waves‚ or radio carriers as they are referred
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PurposeIn this experiment‚ sodium hypochlorite (NaOCl) in acetic acid mixture was used to oxidize emdo-borneol (an alcohol) to camphor (a ketone). The product would then be purified by sublimation and then be analyzed by Infrared spectroscopy and melting point test. Procedure and ObservationsPlease refer to the lab manual and the carbon copy attached. Data and CalculationsWeight of endo-borneol = 0.2013gNo of moles of endo-borneol = 0.2013g/154.25g mol-1 = 1. 305mmolSince one mole of endo-borneol
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CLN’S LAB 2006: SUPPORTING CLINICAL DECISIONS SERIES Oxygen Saturation A Guide to Laboratory Assessment BY SHANNON HAYMOND‚ PHD uman life depends on the oxygen transport by hemoglobin. In healthy patients‚ the majority of molecular oxygen (O2) is bound to hemoglobin and only a small fraction is dissolved in blood. But in patients with respiratory problems or certain metabolic and genetic disorders‚ the fraction of oxygenated hemoglobin can fall to dangerously low values. Therefore‚ laboratory
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