...Front. Mech. Eng. 2013, 8(3): 215–243 DOI 10.1007/s11465-013-0248-8 REVIEW ARTICLE Nannan GUO, Ming C. LEU Additive manufacturing: technology, applications and research needs © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013 Abstract Additive manufacturing (AM) technology has been researched and developed for more than 20 years. Rather than removing materials, AM processes make three-dimensional parts directly from CAD models by adding materials layer by layer, offering the beneficial ability to build parts with geometric and material complexities that could not be produced by subtractive manufacturing processes. Through intensive research over the past two decades, significant progress has been made in the development and commercialization of new and innovative AM processes, as well as numerous practical applications in aerospace, automotive, biomedical, energy and other fields. This paper reviews the main processes, materials and applications of the current AM technology and presents future research needs for this technology. Keywords additive manufacturing (AM), AM processes, AM materials, AM applications 1 Introduction The ASTM F42 Technical Committee defines additive manufacturing (AM) as the “process of joining materials to make objects from three-dimensional (3D) model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies” [1]. It is also known as additive fabrication, additive processes, direct digital...
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...Chapter 1 INTRODUCTION 1.1 General Groundwater intrusion through a building's foundation can cause serious damage. In addition to increased concrete deterioration and accelerated rebar corrosion, basement dampness can ruin expensive electrical and mechanical equipments, which are often located in basement space; can increase maintenance requirements through frequent repainting or cleaning to combat mould growth; and can make affected areas uninhabitable or even unusable due to poor air quality. In selective problem areas, the usual approach to the treatment of water intrusion problems is to 'trench and drain', in other words, to excavate and expose the wall area and the base of the foundation, to replace waterproofing on the wall surface, and to install a drain tile system around the building or affected area. Other areas, such as floors, are untreatable using conventional methods. Electro-osmotic pulse (EOP) technology offers an alternative solution that can mitigate some water-related problems from the interior of affected areas without the cost of excavation. Further, by lessening water seepage through concrete walls and floors, indoor humidity is reduced, thereby alleviating corrosion damage to mechanical equipment, lessening mould problems, and enhancing indoor air quality. 1.2 Electro-Osmotic Flow If ions of one sign are preferentially adsorbed at a solid solution interface, a net charge or electric potential difference develops across the interface. This...
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...In this project combination of sodium hydroxide and potassium hydroxide is used as electrolytic solution. 1. Caustic soda (NaOH) It is also known as sodium hydroxide, having caustic metallic base. It is hygroscopic readily absorb water as presented in air, so it should be stored in a container. Caustic soda is soluble in water with the liberation of heat along with also dissolves in ethanol and methanol, although it shows lower solubility in these solvents than potassium hydroxide. Molten sodium hydroxide is also a strong base, however high temperature is required to limits applications. Sodium hydroxide solution will leave a yellow stain on fabric in addition to paper. It is used in several industries, mostly as a strong chemical base in the produce of pulp and paper, textile, drinking water, soaps plus detergents in addition to a drain cleaner. Unpolluted sodium hydroxide is a white solid obtainable in the form of pallets; flake granules furthermore as a 50% saturated solution. Properties of sodium hydroxide...
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...CARIBBEAN EXAMINATIONS COUNCIL Caribbean Secondary Education Certificate CSEC® CHEMISTRY SYLLABUS Effective for examinations from May–June 2015 CXC 21/G/SYLL 13 Published by the Caribbean Examinations Council. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form, or by any means electronic, photocopying, recording or otherwise without prior permission of the author or publisher. Correspondence related to the syllabus should be addressed to: The Pro-Registrar Caribbean Examinations Council Caenwood Centre 37 Arnold Road, Kingston 5, Jamaica Telephone Number: + 1 (876) 630-5200 Facsimile Number: + 1 (876) 967-4972 E-mail Address: cxcwzo@cxc.org Website: www.cxc.org Copyright © 2013 by Caribbean Examinations Council The Garrison, St Michael BB14038, Barbados CXC 21/G/SYLL 13 Contents RATIONALE ................................................................................................................................... AIMS ............................................................................................................................................. CANDIDATE POPULATION ............................................................................................................. SUGGESTED TIME-TABLE ALLOCATION ........................................................................................ ORGANISATION OF THE SYLLABUS .................................................
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...Maria Vasilenko 223901 Feasibility of using biosensors for heavy metal detection in complex matrices such as bio-slurries. Master of Science Thesis Examiners: Professor Matti Karp Professor Raghida Lepistö Examiner and topic approved in The Science and Bioengineering Department Council meeting on 7.11.2012 Abstract TAMPERE UNIVERSITY OF TECHNOLOGY Master‟s Degree Programme in Science and Bioengineering Vasilenko Maria: Feasibility of using biosensors for heavy metal detection in complex matrices such as bio-slurries. Seminar paper, 97 pages November 2012 Major: Biotechnology Examiners: Matti Karp, Raghida Lepisto Keywords: environmental pollution, heavy metals, biosensors, slurries The quality of bioslurries that are used in industrial production and agriculture need to be watched very closely to avoid spreading of contaminants on area and poisoning of humans and animals. Because heavy metals are very stable and toxic in many chemical compositions, their amount should be estimated very thoroughly. A new approach that involved biosensors was tested in this study. Because the slurries are complex non-unified matrices which composed of two phases – solid and liquid, the cell behavior can varies a lot from the one that explained in water and so the estimation of ion concentration can be not reliable. It was shown that the cell actually behave different in the slurries. Normally the dissolved compounds suppress the biosensor activity and, in the same time, the ions in the...
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...Does Beauty Have a Cost? The Ecological Footprint of the Cosmetics Industry Alexandra Noelle Penny Brown University 2008 Environmental Studies Senior Thesis May 8, 2008 1 Acknowledgements To Caroline Karp, my thesis advisor and primary reader, for her boundless suggestions, ideas, encouragement, and support as I attempted to creatively apply a structured environmental policy analysis to a new problem. To Catherine Goodall, Amit Sheth, and ShaSha at Environmental Packaging International for introducing me to the subject of packaging, guiding me carefully through various analytical techniques, and sparking my interest in redesigning consumerism. To Dave Murray and Joe Orchardo for their assistance running the spectrometer analyses in the Environmental Chemistry Lab as well as their vast patience and willingness to answer my many questions. To Daniela Quilliam and Bill Dundulis at the Rhode Island Department of Health for their honesty in answering my pointed questions and insights into government regulations when funding is a challenge. To my sister, Elena, for her endless patience and support, and especially for her late-night company in the Science Library Friedman Study Center. To my father, Luther, for advising me to work on my thesis early in the year, advice I listened to carefully, agreed with, but never quite followed through. To my mother, Joanne, for never doubting my ability to achieve goals that are seemingly out of reach...
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...Annual Report 2011 Industrial Technology Institute Your Partner in Technological and Industrial Growth Contents ITI Quality Policy 1 Act & Legislation 2 Mandate 2 Vision 2 Mission 2 Board of Management and Committees 3 Organization Structure 4 Senior Management 5 Chairman’s Message 6 Executive Report 8 Performance Highlights 15 Quality Infrastructure 19 Accelerating Industrial Technology Development 22 Benchmarking for Competitiveness 28 Monitoring and Mitigating Pollution 33 Technology for Human welfare and Socio-economic Upliftment 37 Training Programs & Workshops 38 Capacity Building 40 New Initiatives 43 Corporate Awareness 46 Information for Industry 48 Awards and Recognition 52 Corporate Social Responsibility 54 Social, Welfare and Religious Activities 55 Publications, Presentations and Patents 57 Human Resources 62 Executive Staff 65 Financial Report 2011 Auditor's Report AG's Report Reply ITI Quality Policy “The management of the Industrial Technology Institute is unreservedly committed to maintain the ISO 17025 Quality Management System for the Testing and Calibration services and ISO 9000 Quality Management System for the entire Institute, in keeping with the National Quality Policy, thus providing customers with services of the highest professional standards. All ITI staff has been made fully...
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...is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer-Verlag. Violations are liable for prosecution under the German Copyright Law. Springer is a part of Springer Science+Business Media springeronline.com ° Springer Berlin ´ Heidelberg 2006 Printed in Germany The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Hardcover-Design: Erich Kirchner, Heidelberg SPIN 11408604 43/3100-5 4 3 2 1 0 ± Printed on acid-free paper Foreword Brands are an important part of all cultures...
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...April 2013 Current Affairs Study Material INTERNATIONAL China, Russia, Pakistan discuss Afghanistan situation Officials from China, Russia and Pakistan on 3 April 2013 held talks on the issue of coordination between their positions on Afghanistan.The officials from three nations backed the Shanghai Cooperation Organisation (SCO) that is grouping to play a great role in Afghanistan after the withdrawal of NATO Forces in 2014. These talks were held to enhance coordination. The talks followed a similar meeting India, China and Russia held in Moscow recently, reflecting the delicate balancing act — and increasingly complicated regional dynamics — as different countries look to push their interests in the lead up to 2014. Malaysia PM Dissolves Parliament On 3 April Malaysian Prime Minister Najib Razak has dissolved the Parliament ahead of a general election.This dissolution will pave the way for the 13th general election.The elections have to be held before June 2.The Barisan Nasional coalition that has ruled Malaysia since independence in 1957 is expected to face a stiff challenge in the polls from the opposition three-party Pakatan Rakyat (People’s Pact). Tammam Salam named as Lebanon new Prime Minister On 6 April well-known Sunni lawmaker Tammam Salam has been named Lebanon’s new prime minister , after receiving overwhelming parliamentary support.His appointment comes after previous prime minister Najib Mikati resigned and effectively brought down his Hezbollah-dominated...
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...control of the economic and political life of other territories * Masculinism: the assumption that the world is and should be shaped mainly by men for men * environmental determinism: a doctrine holding that human activities are controlled by the environment * globalization: the increasing interconnectedness of different parts of the world through common processes of economic, environmental political and cultural change * ecumene: the total habitable area of a country. Sine it depends on the prevailing technology, the available ecumene varies over time. Canada’s ecumene is so much less than its total area. * Geodemographic research: investigation using census data and commercial data (i.e. sales data and property records) about populations of small districts to create profiles of those populations for market research * Geographic information systems (GIS): an organized collection of computer hardware, software and geographical data that is designed to capture, store, update, manipulate and display spatially referenced information * Regional geography: the study of ways in which unique combinations of environmental and human factors produce territories with distinctive landscapes and cultural...
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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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.............................. 1 2.2 Employment ............................................................................................................................................ 2 2.3 Administration ....................................................................................................................................... 2 3.1 Changes Introduced in GATE 2013 that will continue to remain in force for GATE 2014 .......................................................................................................................................................... 3 4.1 Eligibility for GATE 2014 ................................................................................................................... 4 4.2 GATE Papers ............................................................................................................................................ 5 4.3 Zone-Wise List of Cities in which GATE 2014 will be Held ................................................... 6 4.4 Zone-Wise List of Cities for 3rd Choice .......................................................................................... 7 4.4 State-wise Examination Cities .......................................................................................................... 7 4.4 How to Apply .............................................................................................................................................
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...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 3 Introduction Physics is one of eight volumes in the Science Visual Resources set. It contains five sections, a comprehensive glossary, a Web site guide, and an index. Physics is a learning tool for students and teachers...
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...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 Stock Market Photo research: Roberta Spieckerman Associates Colorplates: Colorplates 1–6, 8, 10: © David Harvey/Marilyn E. Culler, photographer; Colorplate 7: Richard Megna/Fundamental Photographs; Colorplate 9: © Alfred Pasieka/Science Photo Library/Photo Researchers, Inc.; Colorplate 11: From H. Black, Environ. Sci. Technol., 1996, 30, 124A. Photos courtesy D. Pesiri and W. Tumas, Los...
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...Methods 123 R. Venkata Rao, PhD Department of Mechanical Engineering Sardar Vallabhbhai National Institute of Technology, Surat Ichchanath Surat 395 007 Gujarat State India British Library Cataloguing in Publication Data Rao, R. Venkata Decision making in the manufacturing environment : using graph theory and fuzzy multiple attribute decision making methods. - (Springer series in advanced manufacturing) 1. Production management - Decision making 2. Graph theory 3. Fuzzy decision making 4. Multiple criteria decision making I. Title 658.5’036 ISBN-13: 9781846288180 Library of Congress Control Number: 2007926809 Springer Series in Advanced Manufacturing ISSN 1860-5168 ISBN 978-1-84628-818-0 e-ISBN 978-1-84628-819-7 Printed on acid-free paper © Springer-Verlag London Limited 2007...
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