Premium Essay

EM Shielding Advantages And Disadvantages

Submitted By
Words 740
Pages 3
The popularity and rise in applications of electronic devices may be a cause of electromagnetic (EM) environmental pollution [1-4]. While EM fields are needed for many electrical instruments to operate, they can wreak havoc on the operation of other nearby electrical devices. In addition, some studies exhibit that EM radiation can harm human health [5-7]. A simple solution to overcome these problems is to provide EM shielding via coating the sensitive electronics parts or EM radiation sources by an EM shield layer. EM shielding is the process of reducing EM field or radiation in order to isolate sensitive apparatus, especially the critical components from electric and magnetic fields. EM shield causes discontinuity in the path of EM waves …show more content…
There are several key parameters in producing EM wave absorber materials which needed to be taken into consideration, such as the weight, thickness, filler content, types of filler, environmental resistance and mechanical …show more content…
On the other hand, carbon fibers (CFs) have been widely used as reinforcements and even EM interference suppressors, because they have low density, exquisite mechanical and excellent EM shielding properties [13-15]. Based on these backgrounds, magnetite coatings on carbon fibers is a potential way to further enhance the EM shielding properties of carbon fibers. Magnetite have been successfully coated on many different substrates by a variety of deposition techniques such as sputtering [16] hydrothermal [17], molecular beam epitaxy [18] chemical bath technique [19], etc. Although these methods offer good control over film thickness, morphology, crystallinity and purity, they require costly equipment and consume considerable amounts of energy. The aqueous solution-based ED method can be performed at a relatively low temperature and low cost. Moreover, thickness and morphology of deposited magnetite film can be easily controlled [20]. Even though electrodiposition method is described as a very simple, cheap and non-vacuum based process, the physical properties of obtained coating layer is strongly influenced by the parameters of the electrolytic deposition [20,21]. There are two

Similar Documents

Free Essay

Progress Report

...WHAT IS pH  AND HOW IS IT MEASURED?            A Technical Handbook for Industry                                                            CHAPTER 1 – INTRODUCTION  Why Is pH Measurement Necessary?  3  CHAPTER 2 – WATER AND AQUEOUS SOLUTIONS  The Properties of Water  Ion Product Constant of Water  Molarity  4    4  5  CHAPTER  3  –  FUNDAMENTALS  OF  pH  Definition of pH  pH Values and Hydrogen/Hydroxide Concentration  How is pH Measured?  Activity versus Concentration  The Nernst Equation  The Standard Hydrogen Electrode  6    6    7    7    9    9  CHAPTER 4 – THE pH SENSOR  pH Electrodes  The Measuring Electrode  Asymmetry Potential  Sodium Ion Error  Acid Error  Temperature  Effects  The Reference Electrode  The Reference Junction  Junction Potentials  Gel‐filled Reference Electrode  Buffers  Calibration  11    13  13  14    15  15   16    17  17    18    18  18  CHAPTER  5  –  CARE  OF  pH  ELECTRODES  Dehydration  Factors Detrimental to Electrode Life  Transportation  Storage  22    22  22   23  CHAPTER 6 – COMMON APPLICATIONS  Cooling Tower Control  Food Processing  Coal Industry  Plating Waste Treatment  Ultrapure Water    24    24           24          25          25  BIBLIOGRAPHY                                                                                                  27    GLOSSARY                                      ...

Words: 11054 - Pages: 45

Free Essay

Rakamakafoo

...C O U R S E 5 6 5 Networking Technologies Volume 1 This document should only be used by a Novell-certified instructor. Ifyouthinkthisdocumentwaspirated,call1-800-PIRATESor1-801-861-7101. Networking Technologies Instructor Guide (Volume 1) Education INSTRUCTOR GUIDE 100-004273-001 Revision 1.0 Proprietary Statement Copyright © Novell, Inc. 1994, 1997, 1998. All rights reserved. No part of this publication may be reproduced, photocopied, stored on a retrieval system, or transmitted without the express prior consent of the publisher. This manual, and any portion thereof, may not be copied without the express written permission of Novell, Inc. Novell, Inc. 1555 North Technology Way Orem, Utah 84097-2399 Disclaimer Novell, Inc. makes no representations or warranties with respect to the contents or use of this manual, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc. reserves the right to revise this publication and to make changes in its content at any time, without obligation to notify any person or entity of such revisions or changes. Further, Novell, Inc. makes no representations or warranties with respect to any NetWare software, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, Novell, Inc. reserves the right to make changes to any and all parts of NetWare......

Words: 27853 - Pages: 112

Premium Essay

How to Survive a Nuclear Attack

...reproductions), and (2) the part of this copyright notice within quotation marks is printed along with the copyrighted material." First printing May 1987 Second printing November 1988 Third printing September 1990 ISBN 0-942487-01-X Library of Congress Catalogue Card Number 87-60790 CRESSON H. KEARNY Civil Defense Consultant, Retired A LETTER TO THE AMERICAN PEOPLE FROM CRESSON KEARNY, INVENTOR OF THE KFM Dear Reader, At the time I developed the Kearny Fallout Meter with help from U.S. Department of Energy scientists and engineers, we did not address the issue of nuclear terrorism. We were so concerned back then in the 1970's with the danger of all-out nuclear war that we neglected to instruct users of the KFM of its advantages in a terrorist...

Words: 39667 - Pages: 159

Free Essay

English Vocab

...M A K I N G Y O U R W O R K P L A C E S M O K E F R E E A D E C I S I O N G U I D E M A K E R ’ S M A K I N G Y O U R W O R K P L A C E S M O K E F R E E A D E C I S I O N G U I D E M A K E R ’ S U.S. Department of Health and Human Services Centers for Disease Control and Prevention Office on Smoking and Health Wellness Councils of America American Cancer Society PREFACE As scientific evidence documenting the health hazards posed by environmental tobacco smoke (ETS) continues to mount, workplace decision makers have more reason than ever to protect employees from exposure to ETS on the job. The U.S. Environmental Protection Agency concluded in January 1993 that each year ETS kills an estimated 3,000 adult nonsmokers from lung cancer and that the workplace is a significant source of ETS. In a recent study, nonsmoking employees exposed to ETS at work but not at home had significantly higher levels of a nicotine metabolite in their blood than did nonsmoking workers with no work or home exposure to ETS. Levels of exposure to ETS are lowest in smokefree workplaces. Even before these recent studies were available, the U.S. Surgeon General had determined in 1986 that ETS is a cause of disease, including lung cancer, in otherwise healthy nonsmokers. The Surgeon General also reported that the simple separation of smokers and nonsmokers within the same airspace may reduce, but does not eliminate, the exposure of nonsmokers to ETS. In 1991, the National Institute of......

Words: 14137 - Pages: 57

Premium Essay

Research

...Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States SEVENTH EDITION Data Communications and Computer Networks A Business User’s Approach Curt M. White DePaul University Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States Data Communications and Computer Networks: A Business User’s Approach, Seventh Edition Curt M. White Editor-In-Chief: Joe Sabatino Senior Acquisitions Editor: Charles McCormick, Jr. Senior Product Manager: Kate Mason Editorial Assistant: Courtney Bavaro Marketing Director: Keri Witman Marketing Manager: Adam Marsh Senior Marketing Communications Manager: Libby Shipp Marketing Coordinator: Suellen Ruttkay Media Editor: Chris Valentine Art and Cover Direction, Production Management, and Composition: PreMediaGlobal Cover Credit: © Masterfile Royalty Free Manufacturing Coordinator: Julio Esperas © 2013 Course Technology, Cengage Learning ALL RIGHTS RESERVED. No part of this work covered by the copyright herein may be reproduced, transmitted, stored or used in any form or by any means—graphic, electronic, or mechanical, including but not limited to photocopying, recording, scanning, digitizing, taping, Web distribution, information networks, or information storage and retrieval systems, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act—without the prior written permission of the publisher. For product information and technology......

Words: 234459 - Pages: 938

Premium Essay

Information Technology

...Review Questions for Test-1 (with Answers): Chapter 1: Introduction to Data Communications Outline 1.1 Network Basics 1.2 Network Layer Model (most important) 1.3 Network Standards 1.4 Future Trends (least important) Answers to End-of-Chapter Questions 1. Describe the progression of communications systems from the 1800s to the present. Communications systems progression from the 1800s to the present: 1837 Invention of the telegraph 1876 Invention of the telephone 1877 Telephone system regulation begins in Canada 1878 Telephone system regulation begins in the United States 1879 Direct dialed long distance service begins 1880 Satellites begin to transmit international telephone calls 1881 Caterfone court decision permits non-Bell telephone equipment to be used 1970 Court permits MCI to provide long distance services 1984 Breakup of AT&T 1985 Cellular phones enter service 1996 Telecommunications Act of 1996 deregulates American telephone system 2. Why are network layers important? Communication networks are often broken into a series of layers, each of which can be defined separately, to enable vendors to develop software and hardware that can work together in the overall network. 3. Describe the four layers in the network model used in this book and what they do. • The application layer is the application software used by the user. • The network layer takes the message......

Words: 29622 - Pages: 119

Free Essay

Business

...Instantly How to Connect Anyone with LEIL LOWNDES New York Chicago San Francisco Lisbon London Madrid Mexico City Milan New Delhi San Juan Seoul Singapore Sydney Toronto Copyright © 2009 by Leil Lowndes. All rights reserved. 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 database or retrieval system, without the prior written permission of the publisher. ISBN: 978-0-07-154586-0 MHID: 0-07-154586-7 The material in this eBook also appears in the print version of this title: ISBN: 978-0-07-154585-3, MHID: 0-07-154585-9. All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringement of the trademark. Where such designations appear in this book, they have been printed with initial caps. McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. To contact a representative please visit the Contact Us page at www.mhprofessional.com. TERMS OF USE This is a copyrighted work and The McGraw-Hill Companies, Inc. (“McGraw-Hill”) and its licensors reserve all rights in and to the work. Use of this work is subject to these terms. Except as permitted under the Copyright......

Words: 63714 - Pages: 255

Free Essay

Nit-Silchar B.Tech Syllabus

...NATIONAL INSTITUTE OF TECHNOLOGY SILCHAR Bachelor of Technology Programmes amï´>r¶ JH$s g§ñWmZ, m¡Úmo{ à VO o pñ Vw dZ m dY r V ‘ ñ Syllabi and Regulations for Undergraduate PROGRAMME OF STUDY (wef 2012 entry batch) Ma {gb Course Structure for B.Tech (4years, 8 Semester Course) Civil Engineering ( to be applicable from 2012 entry batch onwards) Course No CH-1101 /PH-1101 EE-1101 MA-1101 CE-1101 HS-1101 CH-1111 /PH-1111 ME-1111 Course Name Semester-1 Chemistry/Physics Basic Electrical Engineering Mathematics-I Engineering Graphics Communication Skills Chemistry/Physics Laboratory Workshop Physical Training-I NCC/NSO/NSS L 3 3 3 1 3 0 0 0 0 13 T 1 0 1 0 0 0 0 0 0 2 1 1 1 1 0 0 0 0 4 1 1 0 0 0 0 0 0 2 0 0 0 0 P 0 0 0 3 0 2 3 2 2 8 0 0 0 0 0 2 2 2 2 0 0 0 0 0 2 2 2 6 0 0 8 2 C 8 6 8 5 6 2 3 0 0 38 8 8 8 8 6 2 0 0 40 8 8 6 6 6 2 2 2 40 6 6 8 2 Course No EC-1101 CS-1101 MA-1102 ME-1101 PH-1101/ CH-1101 CS-1111 EE-1111 PH-1111/ CH-1111 Course Name Semester-2 Basic Electronics Introduction to Computing Mathematics-II Engineering Mechanics Physics/Chemistry Computing Laboratory Electrical Science Laboratory Physics/Chemistry Laboratory Physical Training –II NCC/NSO/NSS Semester-4 Structural Analysis-I Hydraulics Environmental Engg-I Structural Design-I Managerial Economics Engg. Geology Laboratory Hydraulics Laboratory Physical Training-IV NCC/NSO/NSS Semester-6 Structural Design-II Structural Analysis-III Foundation Engineering Transportation Engineering-II Hydrology......

Words: 126345 - Pages: 506

Free Essay

Hsc Chemistry Notes

...Chemistry Notes 2010 Core Module 1: Production of Materials Contextual Outline Humans have always exploited their natural environment for all their needs including food, clothing and shelter. As the cultural development of humans continued, they looked for a greater variety of materials to cater for their needs. The twentieth century saw an explosion in both the use of traditional materials and in the research for development of a wider range of materials to satisfy technological developments. Added to this was a reduction in availability of the traditional resources to supply the increasing world population. Chemists and chemical engineers continue to play a pivotal role in the search for new sources of traditional materials such as those from the petrochemical industry. As the fossil organic reserves dwindle, new sources of the organic chemicals presently used have to be found. In addition, chemists are continually searching for compounds to be used in the design and production of new materials to replace those that have been deemed no longer satisfactory for needs. This module increases students’ understanding of the implications of chemistry for society and the environment and the current issues, research and developments in chemistry. 1.1 Construct word and balanced formulae equations of all chemical reactions as they are encountered in this module: • Acid reactions: o acid (aq) + base (aq)  salt (aq) + water (l) o acid (aq) + active metal (s)  salt (aq) + hydrogen......

Words: 34562 - Pages: 139

Premium Essay

Computer Organization and Architecture Designing for Performance 8th Edition

...COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE EIGHTH EDITION William Stallings Prentice Hall Upper Saddle River, NJ 07458 Library of Congress Cataloging-in-Publication Data On File Vice President and Editorial Director: Marcia J. Horton Editor-in-Chief: Michael Hirsch Executive Editor: Tracy Dunkelberger Associate Editor: Melinda Haggerty Marketing Manager: Erin Davis Senior Managing Editor: Scott Disanno Production Editor: Rose Kernan Operations Specialist: Lisa McDowell Art Director: Kenny Beck Cover Design: Kristine Carney Director, Image Resource Center: Melinda Patelli Manager, Rights and Permissions: Zina Arabia Manager, Visual Research: Beth Brenzel Manager, Cover Visual Research & Permissions: Karen Sanatar Composition: Rakesh Poddar, Aptara®, Inc. Cover Image: Picturegarden /Image Bank /Getty Images, Inc. Copyright © 2010, 2006 by Pearson Education, Inc., Upper Saddle River, New Jersey, 07458. Pearson Prentice Hall. All rights reserved. Printed in the United States of America. This publication is protected by Copyright and permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to: Rights and Permissions Department. Pearson Prentice Hall™ is a trademark of Pearson Education, Inc. Pearson® is a registered trademark......

Words: 239771 - Pages: 960

Free Essay

Lovestories Book

...http://www.ebooksread.com/ THE WORKS OF MARY ROBERTS RINEHART LOVE STORIES THE REVIEW OF REVIEWS COMPANY Publishers NEW YORK PUBLISHED BY ARRANGEMENT WITH GEORGE H. DORAN COMPANY. Copyright, 1919, By George H. Doran Company Copyright, 1912, 1913, 1916, by the Curtis Publishing Company Copyright, 1912, by The McClure Publications, Inc. Copyright, 1917, by The Metropolitan Magazine Co. CONTENTS I TWENTY-TWO II JANE III IN THE PAVILION IV GOD'S FOOL V THE MIRACLE VI "ARE WE DOWNHEARTED? NO!" VII THE GAME LOVE STORIES TWENTY-TWO I The Probationer's name was really Nella Jane Brown, but she was entered in the training school as N. Jane Brown. However, she meant when she was accepted to be plain Jane Brown. Not, of course, that she could ever be really plain. People on the outside of hospitals have a curious theory about nurses, especially if they are under twenty. They believe that they have been disappointed in love. They never think that they may intend to study medicine later on, or that they may think nursing is a good and honourable career, or that they may really like to care for the sick. The man in this story had the theory very hard. When he opened his eyes after the wall of the warehouse dropped, N. Jane Brown was sitting beside him. She had been practising counting pulses on him, and her eyes were slightly upturned and very earnest. There was a strong odour of burnt rags in the air, and the man sniffed. Then he put a hand to his upper lip--the right hand. She was......

Words: 75244 - Pages: 301

Premium Essay

Maze Runner - the Death Cure

...ALSO BY JAMES DASHNER The Maze Runner The Scorch Trials The 13th Reality series The Journal of Curious Letters The Hunt for Dark Infinity The Blade of Shattered Hope This is a work of fiction. Names, characters, places, and incidents either are the product of the author’s imagination or are used fictitiously. Any resemblance to actual persons, living or dead, events, or locales is entirely coincidental. Text copyright © 2011 by James Dashner Jacket art copyright © 2011 by Philip Straub All rights reserved. Published in the United States by Delacorte Press, an imprint of Random House Children’s Books, a division of Random House, Inc., New York. Delacorte Press is a registered trademark and the colophon is a trademark of Random House, Inc. Visit us on the Web! randomhouse.com/teens Educators and librarians, for a variety of teaching tools, visit us at randomhouse.com/teachers Library of Congress Cataloging-in-Publication Data Dashner, James. The death cure / James Dashner. — 1st ed. p. cm. Sequel to: The Scorch trials. Summary: As the third Trial draws to a close, Thomas and some of his cohorts manage to escape from WICKED, their memories having been restored, only to face new dangers as WICKED claims to be trying to protect the human race from the deadly FLARE virus. eISBN: 978-0-375-89612-5 [1. Survival—Fiction. 2. Science fiction.] I. Title. PZ7.D2587De 2011 [Fic]—dc23 2011022236 Random House Children’s Books supports the First Amendment and......

Words: 88842 - Pages: 356

Premium Essay

Leadership

...Fourth Edition Reframing Organizations Artistry, Choice, and Leadership LEE G. BOLMAN TERRENCE E. DEAL B est- se l l i n g a u t h o rs of LEADING WITH SOUL FOURTH EDITION Reframing Organizations Artistry, Choice, and Leadership Lee G. Bolman • Terrence E. Deal Copyright © 2008 by John Wiley & Sons, Inc. All rights reserved. Published by Jossey-Bass A Wiley Imprint 989 Market Street, San Francisco, CA 94103-1741—www.josseybass.com No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400, fax 978-6468600, or on the Web at www.copyright.com. Requests to the publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, 201-7486011, fax 201-748-6008, or online at www.wiley.com/go/permissions. Credits are on page 528. Readers should be aware that Internet Web sites offered as citations and/or sources for further information may have changed or disappeared between the time this was written and when it is read. Limit of......

Words: 193447 - Pages: 774

Premium Essay

Novel

...LOST VICTORIES BY FIELD-MARSHAL ERICH VON MANSTEIN Edited and translated by ANTHONY G. POWELL Foreword by CAPTAIN B.H. LIDDELL HART Introduction to this Edition by MARTIN BLUMENSON DEM ANDENKEN UNSERES GEFALLEN SOHNES GERO v. MANSTEIN UND ALLER FÜR DEUTSCHLAND GEFALLENEN KAMARADEN CONTENTS INTRODUCTION by Martin Blumenson FOREWORD by Captain B. H. Liddell Hart AUTHOR'S PREFACE TRANSLATOR'S NOTE Part I. The Campaign in Poland 1. BEFORE THE STORM 2. THE STRATEGIC POSITION 3. THE OPERATIONS OF SOUTHERN ARMY GROUP Part II. The Campaign in the West INTRODUCTORY NOTE 4. THE ECLIPSE OF O.K.H. 5. THE OPERATION PLAN CONTROVERSY 6. COMMANDING GENERAL, 38 ARMY CORPS 7. BETWEEN TWO CAMPAIGNS Part III. War in the East 8. PANZER DRIVE 9. THE CRIMEAN CAMPAIGN 10. LENINGRAD - VITEBSK 11. HITLER AS SUPREME COMMANDER 12. THE TRAGEDY OF STALINGRAD 13. THE 1942-3 WINTER CAMPAIGN IN SOUTH RUSSIA 14. OPERATION 'CITADEL' 15. THE DEFENSIVE BATTLES OF 1943-4 APPENDIX I APPENDIX II APPENDIX III APPENDIX IV MILITARY CAREER GLOSSARY OF MILITARY TERMS ILLUSTRATIONS MAPS Key to Symbols used in Maps 1. German and Polish Deployment, and Execution of German Offensive. 2. Southern Army Group's Operations in Polish Campaign. 3. The O.K.H. plan of Operations for German Offensive in the West. 4. Army Group A's Proposals for German Operations in the West. 5. 38 Corps' Advance from the Somme to the Loire. 6. 56 Panzer Corps' Drive into Russia. 7.......

Words: 214033 - Pages: 857

Premium Essay

Business

...C h a p t e r 1 Prewriting GETTING STARTED (OR SOUP-CAN LABELS CAN BE FASCINATING) For many writers, getting started is the hardest part. You may have noticed that when it is time to begin a writing assignment, you suddenly develop an enormous desire to straighten your books, water your plants, or sharpen your pencils for the fifth time. If this situation sounds familiar, you may find it reassuring to know that many professionals undergo these same strange compulsions before they begin writing. Jean Kerr, author of Please Don’t Eat the Daisies, admits that she often finds herself in the kitchen reading soup-can labels—or anything—in order to prolong the moments before taking pen in hand. John C. Calhoun, vice president under Andrew Jackson, insisted he had to plow his fields before he could write, and Joseph Conrad, author of Lord Jim and other novels, is said to have cried on occasion from the sheer dread of sitting down to compose his stories. To spare you as much hand-wringing as possible, this chapter presents some practical suggestions on how to begin writing your short essay. Although all writers must find the methods that work best for them, you may find some of the following ideas helpful. But no matter how you actually begin putting words on paper, it is absolutely essential to maintain two basic ideas concerning your writing task. Before you write a single sentence, you should always remind yourself that 1. You have some valuable ideas to tell your reader,...

Words: 234754 - Pages: 940