...Assignment 1 Jon Barberio Professor James Smith SCI 115 April 22, 2012 There are many similarities and also many differences when comparing photosynthesis and semiconductor based solar cells this paper will outline those these as well as give a description of the two cycles. I will also be defining the law of thermodynamics and explaining how it applies to photosynthesis and also semiconductor based solar cells harnessing solar energy. Photosynthesis is the process of converting solar energy into chemical energy in the form of carbohydrates. For photosynthesis to occur a few factors must be present such as water, carbon dioxide, chlorophyll, and light energy. Photosynthesis consists of two sets of reactions the first being the photo portion or light reaction which is the reaction that captures solar energy the second being the synthesis reaction or Calvin cycle reactions which converts that solar energy into carbohydrates (Mader, 2010). For light reactions to occur first light energy enters the cells and is absorbed by the chlorophyll. That Light energy raises the energy level chlorophyll enabling electrons to be freed form the chlorophyll molecules. This makes the chlorophyll molecules positively charged the electrons from hydrogen atoms are attracted to the positively chlorophyll causing water molecules to break apart into oxygen atoms. The elections freed from the chlorophyll and the protons freed from water take part in the chemical reactions in the cell. The reactions...
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...Running head: PHOTOSYNTHESIS AND SEMICONDUCTOR-BASED SOLAR CELL 1 Photosynthesis and Semiconductor-based Solar Cell Jorge Tavarez Strayer University PHOTOSYNTHESIS AND SEMICONDUCTOR-BASED SOLAR CELL 2 Abstract Energy is the capacity to do work and make things happen (Mader, 2009, p. 72). Human or other living things would not be on Earth without the source of energy. In photosynthesis, plant cells harness the sun’s solar energy with carbon dioxide to transform water molecules into oxygen, hydrogen and electrons and a semiconductor-based solar cell harnesses solar energy to convert it to electricity required by humans. In this paper, I will discuss the comparison and contrast of the two systems. I will also describe ways in which the plant cell and the solar cell are similar and different to each other. In addition, I will discuss how the laws of thermodynamics apply to each system. PHOTOSYNTHESIS AND SEMICONDUCTOR-BASED SOLAR CELL 3 Photosynthesis and Semiconductor-Based Solar Cell Two ways in which energy is created for the various life forms on earth are photosynthesis and the process that a semiconductor-based solar cell goes through to make energy. Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. Semiconductor-based solar cells utilize...
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...Solar and Plant Cells Compared Tiffany L. Triggs Strayer University The Importance of Energy For plant Earth, the Sun is the main source for all energy. It is the main essential thing that provides us with light, warmth and energy. Some organisms, such as plants and algae, create their own food using the sun as their main source of energy. In turn the fuel the rest of the world by creating energy for animals and humans after being consumed. They also remove carbon dioxide from the air and replenish oxygen for us to breath. This process, through which this energy is harnessed and used to create food, or carbohydrates, is called photosynthesis. Can the energy of the sun be harnessed by humans to create energy? It can be and it is through the use of solar cells. Photosynthesis and solar cells are similar, yet different in a few ways. Creating Our Own Energy Humans have figured out how to use the power of the sun for energy. Using Solar panels containing semiconductors, we can turn the sun into electricity, a very popular form of energy. In this way, photosynthesis and solar cells are similar, both using the suns light to create a form of energy. The type of energy created, however, is where one difference comes into play. Plants create a chemical energy known as carbohydrates, a simple organic compound of oxygen, carbon and hydrogen, while solar cells use semiconductors to produce electricity. Use of Electrons Solar Cells and Photosynthesis both use a form...
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...Air, Weather, and Climate Chapter 15 ENS 201 • • • • • • Outline Weather vs. Climate Composition of the Atmosphere Structure of the Atmosphere Greenhouse Effect & Greenhouse Gases Current Evidence of Climate Change Climate Change: Winners and losers 1 Weather vs. Climate • Weather- A description of the short-term physical conditions of the atmosphere (moisture, temperature, pressure & wind). • Climate- A description of the long-term weather pattern in a particular area. Weather & climate are primary determinants of biomes & ecosystem distribution. Past & Present Composition of the Atmosphere • Many geochemists believe the earth’s earliest atmosphere was made up mainly of hydrogen & helium. • Volcanic emissions have added carbon, nitrogen, oxygen, & sulfur to the atmosphere. • Virtually all oxygen gas was produced by photosynthesis. 2 Structure of the Atmosphere: A Layered Envelope Structure of the Atmosphere: A Layered Envelope • Troposphere – Ranges in depth from 12.5 km over the equator to 8.0 km over the poles. – All weather occurs here. – Contains about 75% of the total mass of the atmosphere. – Composition is relatively uniform over the entire planet: N2 (78% by volume), O2 (21%), CO2 (0.036%), H2O, & trace amounts of several other gases. 3 Structure of the Atmosphere: A Layered Envelope • Troposphere – Strongly stirred by winds. – Air temperature drops rapidly with increasing altitude, reaching about -60°C at the top. –Tropopause...
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...Anthocyanin from Basella alba (Alugbati) stems as light-accumulators for making of dye-sensitized solar cells ________________________ An Investigatory Project Presented to Association of Science Educators of the Philippines (ASEP) in cooperation with Department of Education (DepEd) ________________________ As an Entry to the 2014 REGIONAL SCIENCE QUEST (Regional Level – Physical Science Team – Private Schools Category) ________________________ Proponents Dan Carlos C. Calubaquib Lisa Marielle S. Tagasa Rea Melissa P. Espiritu EFREN PAZ Research Adviser ________________________ Roosevelt College Science High School Sumulong Highway Cainta, Rizal November 2014 ACKNOWLEGDEMENT We would like to thank our parents for their nonstop support during our research project. Thank you for Mr. and Mrs. Tagasa for letting us stay at their house to do our experiments in the middle of the night. Thanks you for Mrs. Espiritu for helping us to find Indium Tin Oxide, which is essential to our study. And last but not the least, thank you for Ms. Corpuz for helping us to find the chemicals we needed. To our friends that encouraged us to continue. Thank you for Austin Kinn Rubin for giving us a piece of advice on what would be the best thing to do for our research. And to the entire Batch 10, we thank you for the support you gave. To our teachers that taught us how to think and not what to think. To Ms. Luzita Alcid, our principal, who helped us defend our study better. To our research...
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...air-conditioning and a double garage. Most electricity is generated by burning coal. A constant and growing demand for red meat. Cattle belch out methane, a toxic greenhouse gas, much more dangerous than carbon dioxide. More and more forests and bushland, which absorb carbon dioxide from the air, are being cut down so more cattle can graze. A reduction in the planet's ability to remove greenhouse gases from the atmosphere. The earth has natural sources of carbon dioxide (a greenhouse gas), and has had long before mankind began altering the environment, but the earth has natural means to actually remove some greenhouse gases from the atmosphere, especially carbon dioxide which is removed by plants (especially dense, tall forests) through photosynthesis. Global deforestation...
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...Chapter 01 1.1 Introduction: A storage device may be used to store energy from renewable energy source in DC form which can be converted to AC power by using power inverter. Pulse Width Modulated (PWM) technique may be used to control output rms voltage of the inverter. As the load is variable, the power consumed by the load (PL) may be smaller than the power generated from the renewable energy source (PR). Therefore a Flexible AC Transmission System (FACTS) Controller may be used to supply the additional power (PR – PL) from the renewable energy source to the grid. On the other hand if the power consumed by the load (PL) is greater than the power generated from the renewable energy source (PR) therefore the same FACTS controller may be used to absorb the additional power (PR – PL) from the grid to the load. In this case the FACTS controller must allow bi-directional power flow. If all the active houses are connected to the grid in the same way (proposed way), the active houses that generate more power than the load can be supplied to the active houses that generate less power than the load. Therefore a suitable FACTS controller should be designed in such a way that it can control the power flow in both directions. The idea is illustrated in the following figure. 1.2 Objectives: • Study on different FACTS controllers • Study on different renewable energy sources • Study on different...
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...1 1 Fundamentals of Semiconductor Electrochemistry and Photoelectrochemistry Krishnan Rajeshwar The University of Texas at Arlington, Arlington, Texas 1.1 1.2 1.3 1.3.1 1.3.2 1.3.3 1.3.4 1.4 1.4.1 1.4.2 1.4.3 1.5 1.5.1 1.5.2 1.5.3 1.5.4 1.5.5 1.6 1.7 1.7.1 1.7.2 1.7.3 1.7.4 1.7.5 Introduction and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electron Energy Levels in Semiconductors and Energy Band Model . The Semiconductor–Electrolyte Interface at Equilibrium . . . . . . . . The Equilibration Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The Depletion Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mapping of the Semiconductor Band-edge Positions Relative to Solution Redox Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Surface States and Other Complications . . . . . . . . . . . . . . . . . . . Charge Transfer Processes in the Dark . . . . . . . . . . . . . . . . . . . . Current-potential Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dark Processes Mediated by Surface States or by Space Charge Layer Recombination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rate-limiting Steps in Charge Transfer Processes in the Dark . . . . . Light Absorption by the Semiconductor Electrode and Carrier Collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Light Absorption...
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...McKinsey Global Institute May 2013 Disruptive technologies: Advances that will transform life, business, and the global economy The McKinsey Global Institute The McKinsey Global Institute (MGI), the business and economics research arm of McKinsey & Company, was established in 1990 to develop a deeper understanding of the evolving global economy. Our goal is to provide leaders in the commercial, public, and social sectors with the facts and insights on which to base management and policy decisions. MGI research combines the disciplines of economics and management, employing the analytical tools of economics with the insights of business leaders. Our “micro-to-macro” methodology examines microeconomic industry trends to better understand the broad macroeconomic forces affecting business strategy and public policy. MGI’s in-depth reports have covered more than 20 countries and 30 industries. Current research focuses on four themes: productivity and growth, the evolution of global financial markets, the economic impact of technology and innovation, and urbanization. Recent reports have assessed job creation, resource productivity, cities of the future, and the impact of the Internet. MGI is led by McKinsey & Company directors Richard Dobbs and James Manyika. Yougang Chen, Michael Chui, Susan Lund, and Jaana Remes serve as MGI principals. Project teams are led by a group of senior fellows and include consultants from McKinsey’s offices around the world. These teams draw...
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...*Physics Prelims (1-7).qxd 12/11/08 1:00 PM Page 1 SCIENCE VISUAL RESOURCES PHYSICS An Illustrated Guide to Science The Diagram Group *Physics Prelims (1-7).qxd 12/11/08 1:00 PM Page 2 Physics: An Illustrated Guide to Science Copyright © 2006 The Diagram Group Author: Derek McMonagle BSc PhD CSci CChem FRSC Editors: Catherine Gaunt, Jamie Stokes Design: Anthony Atherton, Richard Hummerstone, Lee Lawrence, Tim Noel-Johnson, Phil Richardson Illustration: Peter Wilkinson Picture research: Neil McKenna Indexer: Martin Hargreaves All rights reserved. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval systems, without permission in writing from the publisher. For information contact: Chelsea House An imprint of Infobase Publishing 132 West 31st Street New York NY 10001 For Library of Congress Cataloging-in-Publication Data, please contact the Publisher ISBN 0-8160-6167-X Chelsea House books are available at special discounts when purchased in bulk quantities for businesses, associations, institutions, or sales promotions. Please call our Special Sales Department in New York at 212/967-8800 or 800/322-8755. You can find Chelsea House on the World Wide Web at http://www.chelseahouse.com Printed in China CP Diagram 10 9 8 7 6 5 4 3 2 This book is printed on acid-free paper. *Physics Prelims (1-7).qxd 12/11/08 1:00 PM Page...
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...NOTE: This PDF document has a handy set of “bookmarks” for it, which are accessible by pressing the Bookmarks tab on the left side of this window. ***************************************************** We are the last. The last generation to be unaugmented. The last generation to be intellectually alone. The last generation to be limited by our bodies. We are the first. The first generation to be augmented. The first generation to be intellectually together. The first generation to be limited only by our imaginations. We stand both before and after, balancing on the razor edge of the Event Horizon of the Singularity. That this sublime juxtapositional tautology has gone unnoticed until now is itself remarkable. We're so exquisitely privileged to be living in this time, to be born right on the precipice of the greatest paradigm shift in human history, the only thing that approaches the importance of that reality is finding like minds that realize the same, and being able to make some connection with them. If these books have influenced you the same way that they have us, we invite your contact at the email addresses listed below. Enjoy, Michael Beight, piman_314@yahoo.com Steven Reddell, cronyx@gmail.com Here are some new links that we’ve found interesting: KurzweilAI.net News articles, essays, and discussion on the latest topics in technology and accelerating intelligence. SingInst.org The Singularity Institute for Artificial Intelligence: think tank devoted to increasing...
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...STARS WITHOUT NUMBER For Eden, who gave me a reason. TABLE OF CONTENTS Introduction ..............................................................................................................5 Character Creation ....................................................................................................7 Psionics ...................................................................................................................25 Equipment ..............................................................................................................33 Systems ...................................................................................................................59 The History of Space ...............................................................................................71 Game Master’s Guide ..............................................................................................78 World Generation ...................................................................................................87 Factions .................................................................................................................113 Adventure Creation ...............................................................................................128 Alien Creation .......................................................................................................138 Xenobestiary ........................................................................
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...2014-2015 Undergraduate Academic Calendar and Course Catalogue Published June 2014 The information contained within this document was accurate at the time of publication indicated above and is subject to change. Please consult your faculty or the Registrar’s office if you require clarification regarding the contents of this document. Note: Program map information located in the faculty sections of this document are relevant to students beginning their studies in 2014-2015, students commencing their UOIT studies during a different academic year should consult their faculty to ensure they are following the correct program map. i Message from President Tim McTiernan I am delighted to welcome you to the University of Ontario Institute of Technology (UOIT), one of Canada’s most modern and dynamic university communities. We are a university that lives by three words: challenge, innovate and connect. You have chosen a university known for how it helps students meet the challenges of the future. We have created a leading-edge, technology-enriched learning environment. We have invested in state-of-the-art research and teaching facilities. We have developed industry-ready programs that align with the university’s visionary research portfolio. UOIT is known for its innovative approaches to learning. In many cases, our undergraduate and graduate students are working alongside their professors on research projects and gaining valuable hands-on learning, which we believe is integral...
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...Philosophy and Design Pieter E. Vermaas • Peter Kroes Andrew Light • Steven A. Moore Philosophy and Design From Engineering to Architecture Pieter E. Vermaas Delft University of Technology Delft the Netherlands Andrew Light University of Washington Seattle USA Peter Kroes Delft University of Technology Delft the Netherlands Steven A. Moore University of Texas Austin USA ISBN 978-1-4020-6590-3 e-ISBN 978-1-4020-6591-0 Library of Congress Control Number: 2007937486 © 2008 Springer Science + Business Media B.V. No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Printed on acid-free paper. 9 8 7 6 5 4 3 2 1 springer.com Contents List of Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Design in Engineering and Architecture: Towards an Integrated Philosophical Understanding . . . . . . . . . . . . . . . . . Peter Kroes, Andrew Light, Steven A. Moore, and Pieter E. Vermaas Part I Engineering Design ix 1 Design, Use, and the Physical and Intentional Aspects of Technical Artifacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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...ADRA AC&H AC&H H&S ADRA HA HA H&S OI REC NAT NAT OI VOC VOC SGO&H REC SGO&H pathfinder honor book 2014 revision general conference youth ministries department -1- ADRA AC&H H&S NAT HA OI SGO&H REC VOC pathfinder honor book 2014 revision general conference youth ministries department -3- General Conference Youth Ministries Department Director: Gilbert Cangy General Conference Associate Youth Director/Pathfinder World Director: Jonatan Tejel General Conference Honors Committee: Jonatan Tejel, Chairman Vanessa Correa, Secretary Gennady Kasap: ESD Youth Director Busi Khumalo: SID Youth Director Mark O’Ffill: NAD representative John Sommerfeld: SPD representative Paul Tompkins: TED Youth Director Jobbie Yabut: SSD Youth Director Udolcy Zukowski: SAD Pathfinder Director Copyright © 2014 by the Youth Ministries Department of the Seventh-day Adventist® Church All rights reserved. Published 2014 First edition published 1998. Second edition 2011. Third edition 2014 Rights for publishing this book outside the U.S.A. or in non-English languages are administered by the Youth Ministries Department of the Seventh-day Adventist® Church. For additional information, please visit our website, www.gcyouthministries. org, email youthinfo@gc.adventist.org, or write to Youth Ministries Department, General Conference of Seventh-day Adventists® Church, 12501 Old Columbia Pike, Silver Spring, MD 20904, U.S.A. Cover and inside design by Jonatan Tejel Printed in the United...
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