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Revealing Internal Flow Behaviour in Arc Welding and Additive
ARTICLE https://doi.org/10.1038/s41467-018-07900-9 OPEN Revealing internal flow behaviour in arc welding and additive manufacturing of metals Lee Aucott 1, Hongbiao Dong 2, Wajira Mirihanage3, Robert Atwood 4, Anton Kidess5,10, Shian Gao2, Shuwen Wen6,11, John Marsden6, Shuo Feng2, Mingming Tong7,12, Thomas Connolley 4, Michael Drakopoulos4, Chris R. Kleijn5, Ian M. Richardson8, David J. Browne7, Ragnvald H. Mathiesen9 & Helen.V. Atkinson2,13 1234567890():,; Internal flow behaviour during melt-pool-based metal manufacturing remains unclear and hinders progression to process optimisation. In this contribution, we present direct time- resolved imaging of melt pool flow dynamics from a high-energy synchrotron radiation experiment. We track internal flow streams during arc welding of steel and measure instantaneous flow velocities ranging from 0.1 m s−1 to 0.5 m s−1. When the temperature- dependent surface tension coefficient is negative, bulk turbulence is the main flow mechanism and the critical velocity for surface turbulence is below the limits identified in previous theoretical studies. When the alloy exhibits a positive temperature-dependent surface tension coefficient, surface turbulence occurs and derisory oxides can be entrapped within the subsequent solid as result of higher flow velocities. The widely used arc welding and the emerging arc additive manufacturing routes can be optimised by controlling internal melt flow through adjusting surface active elements. 1 United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, Oxfordshire OX14 3DB, UK. 2 Department of Engineering, University of Leicester, Leicester LE1 7RH, UK. 3 School of Materials, University of Manchester, Manchester M13 9PL, UK. -
2011 Conference Program
Tuesday, August 9, 2011 (as of Wednesday, June 29, 2011) 8 am to 5 pm / 001 Advertising Division Advertising Teaching Workshop Session: Strategic Solutions at the Intersection of Content and Channel Moderating/Presiding: Peggy Kreshel, Georgia Karie Hollerbach, Southeast Missouri State Featured Panelist: Media: From Chaos to Clarity. Making Sense of a Messy Media World Judy Franks, founder & president, The Marketing Democracy, Chicago, IL Peer Presentations: The Media Class: Changing Channels Amy Falkner, Syracuse Michelle Nelson, Illinois The Campaigns Class: You’ve Arrived Karie Hollerbach, Southeast Missouri State Heidi Hennink-Kaminski, North Carolina at Chapel Hill Teri Henley, Alabama 8:30 am to 2:30 pm / 002 Association for Education in Journalism and Mass Communication Business Meeting: Board of Directors Meeting Moderating/Presiding: Jan Slater, Illinois, 2010-2011 AEJMC President 9 am to Noon / 003 International Communication and Law and Policy Divisions Panel Sessions: Freedom of Information Around the World Panel I: Freedom of Information as a Human Right 9 a.m. to 9:50 a.m. Moderating/Presiding: Charles Davis, Missouri Panelists: Cheryl Ann Bishop, Quinnipiac Tuesday, August 9, 2011 2011 AEJMC Conference Program Copy 1 Jane Kirtley, Minnesota Gregory Magarian, Washington University in St. Louis Panel II: Comparative/Foreign Law Approach to Freedom of Information 10 a.m. to 10:50 a.m. Moderating/Presiding: Jeannine Relly, Arizona Panelists: Europe and Eurasia Jane Kirtley, Minnesota India Nikhil Moro, North Texas India and Singapore Sundeep Muppidi, Asian Media Information & Communication Center Nigeria and the African continent Fassy Yusuf, Lagos Panel III: The Diffusion of Freedom of Information Legislation in Latin America 11 a.m. -
National Humanities Center Annual Report 2006-2007
ANNUAL REPORT 2006-2007 02 REPORT FROM THE PRESIDENT AND DIRECTOR ................................................... 12 WORK OF THE FELLOWS ................................................... 30 STATISTICS ................................................... The National Humanities 32 Center’s Report (ISSN 1040-130x) BOOKS BY FELLOWS is printed on recycled paper. ................................................... Copyright ©2007 by 38 National Humanities Center STATEMENT OF 7 T.W. Alexander Drive P.O. Box 12256 FINANCIAL POSITIONS RTP, NC 27709-2256 Tel: 919.549.0661 ................................................... Fax: 919.990.8535 E-mail: info@national 43 UPPORTING THE ENTER humanitiescenter.org S C Web: nationalhumanitiescenter.org ................................................... EDITOR 50 Donald Solomon STAFF OF THE CENTER COPYEDITOR ................................................... Karen Carroll 53 BOARD OF TRUSTEES IMAGES Ron Jautz ................................................... Kent Mullikin The National Humanities Center does not discriminate Geoffrey Harpham Greg Myhra on the basis of race, color, sex, religion, national and ethnic origin, sexual orientation or preference, or age in DESIGN the administration of its selection policies, educational Pandora Frazier policies, and other Center-administered programs. NATIONAL HUMANITIES CENTER / ANNUAL REPORT 2006-2007 1 REPORT FROM THE PRESIDENT AND DIRECTOR GEOFFREY HARPHAM ne day last July, the new issue of the UC Berkeley journal Representations arrived. I always look -
Millimeter Wave Linac and Wiggler Structures
MM-Wave Linac and Wiggler Structures H. Henke Technical University Berlin Institut fuer Theoretische Elektrotechnik Einsteinufer 17, EN 2 D- 10587 Berlin Abstract In an international collaboration a new technology is kW RF peak power for 1 mA current. This is a reasonably being developed for a 50 MeV millimeter RF-wavelength low power level for designing new sources, for instance little electron linear accelerator complex for production of coherent sheet beam klystrinos also in planar technology. Then, the tunable synchrotron radiation. The accclcrator components and whole device would fit on a standardlab table. the wiggler are being designed with planar geometries suitable 2.5MeV F MeV for deep X-ray lithography and subsequent electroplating F5o”r:e bUrK’1P”l (LIGA) or for etching and electroplating silicon wafers. The b&c design ideas of different components for bunching, pre- acceleration, acceleration, focussing and the wiggler are presented. hem 1. INTRODUCTION Micromechanic technology has developed a vast range of fabricational methods for devices in the submillimeter range: high precision stamping, diamond lathes, laser cutting, diffusion bonding, lithography and etching of silicon wafers and deep X-ray lithography with subsequent electroplating Fig. 1 Conceptual design of an integrated mm-wave (LIGA [ll). So, the technology is available for studying and ndiaton source (IMIRAS) eventually building high precision accelerator components and struclures for very high RF frcquencics, let us say above 100 The paper presents different RF structures for acceleration GHz. In this context it is of great importance that the relative and pre-acceleration, possible focussing devices and structures dimensional and frequency tolerances increase with tie square for a microwave wiggler. -
Cutting Tools & Metalworking
17–268 Edge Finders, Wiggler Sets, Height Gauges, Surface Gauges, Bore Gauge Sets Edge Finders Surface Gauges Egde Finders Surface Gauges 0962311 0962312 3163164 7059268 7059269 7059270 Part No. Head Diameter Shank Diameter Style Type 0962311 0.500" 1/2" Single End Edge Finder 0962312 0.200" / 0.500" 1/2" Double End Edge Finder 3163164 0.200" 3/8" Single End Edge Finder 7059268 0.200" 3/8" Single End Edge Finder 7059269 0.200" 1/2" Single End Edge Finder 7059270 0.200" 3/8" Single End Edge/Center Finder Wiggler Sets Part No. Spindle Size Base Size Base Material 3163146 4" / 7" 2-3/16" x 1-5/8" Steel 5 Piece Wiggler Set 3163147 12" / 9" 3-1/8" x 2-1/2" Steel • Made from precision ground tool steel • Includes offset indicator holder and improved chuck design for holding Bore Gauge Sets attachments Telescoping Gage Sets • Range: 1/2-6" • Handle length: 2-3/8" except 3-1/4 on the largest • Each with a handle, one rigid contact arm Part No. Contents and one spring tensioned contact arm 0962313 Chuck, (4) Attachments • Hardened and ground radius on ends CUTTING Height Gauges Part No. Range Contents 0324730 1/2" - 6" 5 Piece Set Includes: 5 Telescoping Gauges Electronic Height Gage - T 3752 Series OOLS & METALWORKING • Clear bar graduations in .100" and Telescoping Gage Sets 5mm increments • Automatically self-centering • Carrier and scriber designed to read from zero, set • Has two telescoping contacts ZERO at any position • Constant spring tension gives uniform • Ability to retain and return to true zero reading contact pressure • In/mm conversion • Easily locked at any setting • Ability to assign minimum and maximum limits • RS232 output for data collection, analysis and hard Part No. -
Newsletter Volume 1, Issue 1
February 2010 MiniTech Engineering & Model Supplies Vol 2 No 1 Newsletter Volume 1, Issue 1 It seems that one of the more Well this edition of the popular items that sell well are Newsletter should solve that Job Interview Question books. In searching for new titles little issue once and for all. You are driving along in your car we have come across a supplier Another slightly different on a wild, stormy night. You pass issue deals with a tool that who is willing to send us their by a bus stop, and you see three How to use a many machinists already collection of volumes. Our have. Sitti ng in their shed people waiting for the bus: wiggler freight costs being reduced by “somewhere,” it doesn’t get a making purchases in bulk. jersey because the user 1. An old lady who looks as if she (wobbler) is about to die. doesn’t really know how to We ha ve listed the titles inside. 2. An old friend who once saved put it to work. That could be your life. Steady as she You may be interested to check the case for the ubiquitous them out and try something 3. The perfect man (or) woman goes or the method travelling steady. you have been dreaming about. completely different for your of using a travelling One person’s methodology steady. next project. for putting it to good use is Which one would you choose to also covered in this issue of offer a ride to, knowing that there There are a lot of tools out there Massive list of the Newsletter. -
51 Snacks for Kids
51 SNACKS FOR KIDS Dry cereal and dried cherries Oat-O’s, peanuts, and carob chips Shredded wheat, lowfat milk, blueberries A cup of soup Layered yogurt, granola, strawberries All fruit popsicle Skewered cantaloupe and cheddar cheese cubes Chicken salad and green grapes Apple and cheese slices Deli meat wrapped around a cheese stick Banana dipped in PB PB and pretzels Strawberries dipped in strawberry cream cheese Cheese and crackers Clementine and cheese stick ½ sandwich and glass of 100% fruit juice Applesauce cup and graham crackers Mini bagel and cream cheese Baked potato, shredded Monterey Jack cheese, salsa Red grapes and cheese kabobs Hummus and flat pretzels (pita, sauce, cheese and turkey pepperoni) Hummus and baby carrots ½ grilled cheese sandwich and vegetable juice Tortilla with melted cheese (quesadilla) Frozen yogurt popsicle Banana or other fruited muffin and 6 oz. milk Oatmeal and berries Toast with nut butter and banana Air popped popcorn Snap peas, red peppers, Laughing Cow cheese Toast with butter and jam Homemade trail mix (cereal, nuts, dried fruit) Tomato and cottage cheese Low fat chocolate milk and whole grain crackers English muffin with butter and honey Coconut yogurt and mini chocolate chips (cantaloupe, watermelon, honeydew) Oatmeal cookies and milk Chocolate hazelnut butter and graham crackers Whole grain waffle with PB Smoothie made with frozen berries, yogurt and milk 100% Orange Juice popsicle Melon balls with a dollop of Greek Yogurt Pepperoni mini pizza Mozzarella and tomato skewers Celery sticks with cream cheese or nut butter Tuna fish salad and crackers Nuts and dried fruit Tossed salad with cheese cubes and dressing Low Fat Ranch dressing and veggies Avocado spread on whole grain crackers Black olives and feta cheese This list is generated to help you see the Yes, it’s easy and fast to offer convenient possibilities–that you don’t have to go for items, but these can be inconvenient to chips, cookies and crackers all the time and your child’s health. -
Healthy Eating Toolkit
The School Healthy Eating Toolkit Prince Edward Island Developed by the Healthy EATS (Eating at School) Project—an initiative of the PEI Healthy Eating Alliance. This project was made possible through financial contributions from the Public Health Agency of Canada, Healthy Eating Alliance Canadian Diabetes Strategy. PEI HEALTHY EATING ALLIANCE 507 Dalton Hall, UPEI PO Box 8600 550 University Ave Charlottetown, PEI Charlottetown, PEI C1A 8V7 C1A 4P3 Tel: (902) 368-6844 Tel: (902) 894-2819 Fax: (902) 368-4065 Fax: (902) 628-4367 Greetings Promoting a healthy school environment which provides access to healthy food choices and nutrition education is an excellent way to help ensure that our children will make healthy choices and do well at school. We, at the PEI Healthy Eating Alliance, are pleased to share with you the School Healthy Eating Toolkit. The Toolkit is a great source of information that has been prepared to support schools as they prepare to implement the School Healthy Eating Policy. The Toolkit provides schools with resources and materials to assist them in promoting a healthy eating environment. The development of the Toolkit was made possible through financial contribution from the Public Health Agency of Canada, Canadian Diabetes Strategy. The Toolkit includes the newly adopted Eastern School District School Nutrition Policy (and will include similar policies from the Western School Board and the Commission scolaire de langue française when adopted), as well as some frequently asked questions relating to the policy. Supportive documents such as Fundraising Alternatives, Safe Food Handling, Peanut Alternatives, Microwave Safety, and School Nutrition Program Ideas can be found in the Toolkit. -
Drill Press Operator: Instructor's Guide
DOCUMENT RESUME 2D 109 N77 CE 004 335 AUTHOR Kagan, Alfre d; And Others TITLE -Drill Press Operator: Instructor's Guide. INSTITUTION New York State Education Dept., Albany. Bureau of Continuing Education Curriculum Development.; New York State Education Dept., Albany. Bureau of Secondary,Curriculum Development. PUB DATE 75 NOTE . 85p.; Part of SingleTool Skills Program, Machine Industries Occupations EDRS PPICE MIP-$0.76 HC-$4.43 PLUS POSTAGE DESCRIPTORS Adult Education; *Curriculum Guides; Machine Tool Operators; *Machine Tools; Metal Working Occupations; Post Secondary Education; Secondary Education; Shop Curriculum; *Trade and Industrial Education IDENTIFIERS *Drill Press Operators ABSTRACT The course is intended to kelp meet, in a relatively short time, the need for trained operators in metalworking. It can be used by students with little education or experience and is suitable far use in adult education programs and in manpower development and training progress. The course is designed' to be completed in approximately 30 weeks and can be adapted for use in secondary 'schools. On successful completion of the course the student will be qualified for an entry-level job as operator in a drill press; he will not qualify as a eachinist. The guide includes h general job content outline for the teacher to use in explaining what the operator's job includes. There are Il shop projects (comprising 19 jobs) accompanied by 32 pages of drawings for the projects. Three of the jobs introducb students to the use of metric measurement. For each job there is a job sheet providing details on performance objectives, equipment, operations, materials, references, procedure, techniques, and time required. -
Garden Salad – 8.95 Chicken Caesar Salad – 11.95 Mixed Greens, Tomato, Cucumber, Red Onion and Romaine, Chicken Breast, Seasoned Croutons, Dijon Vinaigrette
YEAR-ROUND MENU CanterburyParkEvents.com – BREAKFAST – QUICK STARTS Priced per person. Minimum of 20 guests. Coffee, hot tea and an assortment of orange, grapefruit and cranberry juice are included. The Continental – 8.50 Assorted Pastries, Caramel Rolls, Fresh Cut Fruit, Whipped Butter and Preserves. Healthy Beginnings – 10.50 Vanilla Fat Free Greek Yogurt, Granola, Fresh Cut Fruit, Mini Bagels with Cream Cheese and Classic Oatmeal served with Diced Apples, Brown Sugar and Fresh Berries. Morning Scramble – 11.95 Scrambled Eggs, Bacon, Sausage Links, Breakfast Potatoes, Fresh Cut Fruit and Assorted Pastries. BREAKFAST ENHANCEMENTS Add any of these delicious items to one of the breakfast selections above to round out your menu. French Toast Bar – 5.00 Made-to-Order Omelet – 6.00 French Bread (Toast), Chocolate Chips, Whipped Cream, Bacon, Ham, Onion, Peppers, Tomatoes, Mushrooms and Berries, Caramel Pecan Sauce, Maple Syrup, Orange Cheddar Cheese. Marmalade and Strawberry Sauce. Breakfast Burrito – 4.50 Biscuits & Sausage Gravy – 2.50 Scrambled Eggs, Sausage, Cheddar Cheese and Tomatoes served with Sour Cream and Salsa. À LA CARTE ITEMS Whole Fruit – 1.50 ea. Individual Fruit Yogurt – 2.50 ea. Mixed Cut Assorted Mini Muffins – 8.00 dz. Fresh Fruit – 2.95 per person Banana, Blueberry, Lemon Poppyseed. Mini Bagels & Assorted Pastries – 12.00 dz. Cream Cheese – 11.00 dz. Danish, Croissants, Muffins. Assorted Mini Danish – 14.00 dz. Cinnamon Rolls with Cream Cream Cheese, Apple, Raspberry, Cinnamon. Cheese Frosting – 14.00 dz. Caramel Rolls Donuts – 15.00 dz with Pecans – 14.00 dz. Assorted. All food and beverages are subject to sales tax and 20% service charge. -
June 2017 Janua Welcome to a New Year of New Books!
NEW TITLES JANUARY - JUNE 2017 WELCOME TO A NEW YEAR OF NEW BOOKS! As we move through the remnants of 2016, a look back on the past year might inspire the well-worn adage, “you couldn’t make this stuff up”. The world looks forward to the next few years with anxious hearts and minds. While in 2016 truth may be stranger than fiction, at Jacaranda we enter 2017 with a stellar list of uniquely brilliant and illuminating tales. Whether debut voices, or veteran our authors take us from the darkly funny world of Nigerian satire with Anietie Isong’s RADIO SUNRISE, through the stifling exacting world of Tokyo motherhood, with Rahdika Jha’s exquisite novel, MY BEAUTIFUL SHADOW. Starkly evocative landscapes and searing observations of human cruelty and kindness make this work a stand out feature title for the spring. As we move into the summer, we slip into azure, warm Caribbean waters with two genre fiction offerings: Paula Lennon’sMURDER IN MONTEGO BAY, a crime procedural set in the heart of this famed Jamaican holiday destination and Rasheda Malcolm’s SWIMMING WITH FISHES, a very traditional romantic novel enlivened by its Caribbean setting. These offerings promise a new flavour to well-used recipes, new perspectives on old traditions, and bright new voices in the publishing arena. To say we at Jacaranda are excited about our publishing for next year would be a great understatement; we are ecstatic and sincerely hope you will be too. Valerie Brandes Founder and Publisher Jacaranda 2 CONTENTS P.3 NEW RELEASES Cosmogramma Radio Sunrise Dancing the -
Bulletin Magazine of the Richard III Society
Ricardian Bulletin Magazine of the Richard III Society ISSN 0308 4337 December 2012 Ricardian Bulletin December 2012 Contents 3 From the Chairman (Colour section cont’d) 4 Future arrangements for the Bulletin ii Scenes from the Greyfriars dig 5 Annual General Meeting 2012 iii Scenes from the Greyfriars dig and The 10 Living in exciting times The Chairman’s Penn Roll project Address to the Society’s AGM 2012 iv Greyfriars graphics by Emma Vieceli 11 Another AGM perspective 43 Media retrospective: painful puns and Sue and Dave Wells prognostication Geoffrey Wheeler 13 The Augustinian Friary, Lendal, York 48 More points from the dig Lynda Pidgeon Cris Reay Connor and Peter Hammond 14 Society news and notices 51 Media retrospective: an Antipodean 19 Society news from North America perspective Rob Smith and Dorothea Preis 21 Future Society events 51 More on the King in the Car Park 22 Society reviews Geoffrey Wheeler 26 Other news, reviews and events 53 The City Mayor’s Annual Lecture 2012 31 The Man Himself: Looking for Richard – the Wendy Moorhen Greyfriars project 54 Emma Vieceli’s Greyfriars graphics 31 The search for Richard III – DNA, 54 Managing the opportunities – a public documentary evidence and religious relations (PR) strategy Peter Secchi knowledge John Ashdown-Hill 56 Our Olympic Diary: part 2 32 Has the King been found? Sue and Dave Wells Philippa Langley 58 Focus on the Sales team 34 Statement from the University of Leicester 61 Photo caption competition 37 Leicester’s Greyfriars Project Roll of 62 Ricardian crossword 2 by Sanglier Honour 63 Correspondence 38 Greyfriars archaeological dig open day 65 Book reviews and notices Matthew Lewis 67 The Barton Library 39 Initial reflections and press coverage 69 Branches and Groups Bruce Watson and Geoffrey Wheeler 77 New members Centre colour section 78 Recently deceased members i The Society’s AGM and Members’ Day 79 Obituaries 2012 80 Calendar The Ricardian Bulletin is produced by the Bulletin Editorial Committee.