Sodium from Wikipedia: 20 isotopes of sodium are known, but only 23Na is stable. Two radioactive, cosmogenic isotopes are the byproduct of cosmic ray spallation: 22Na with a half-life of 2.6 years and 24Na with a half-life of 15 hours; all other isotopes have a half-life of less than one minute.[9] Two nuclear isomers have been discovered, the longer-lived one being 24mNa with a half-life of around 20.2 microseconds. Acute neutron radiation, such as from a nuclear criticality accident, converts some of the stable 23Na in human blood to 24Na; by measuring the concentration of 24Na in relation to 23Na, the neutron radiation dosage of the victim can be calculated.[10] ________________________________ From: David D. Hillman <[log in to unmask]> To: [log in to unmask] Sent: Friday, October 19, 2012 1:20 PM Subject: [TN] NTC Friday Element Quiz - The Question Hi folks - Here is the Friday Element Quiz Question: The Question: This element is essential for all living things. The chemical industry consumes 60% and the food industry consumes 20% of the annual world production of this element. This element has no naturally occurring radioactive isotopes but one man made isotope has a half life of 15 hours and is used in the medical industry. This element plays a role in snow storms. A compound containing this element finds equal use in the bathroom and the kitchen. What element is being described? The winner of the weekly element quiz will get the services of Clumpy and Kloumpios for the week. So far Clumpy and Kloumpios have done the following: (I have archived previous weeks to keep the email size manageable): Past Quiz winners/tasks: Week 1 Lamar Young, SCS Coatings Week 2 Bev Christian, RIM Week 3 Drew Meyer, Benchmark Electronics Inc Week 4 Ian Fox, Goodrich Week 4 Gary Ferrari, Garrick Global Week 5 Fredrick Miller, Astrola Week 6 David Nelson, Raytheon Week 7 Graham Collins, L3 Communications Week 8 Bill Noel, ITT Geospatial Systems Division Week 9 Steve Gregory of RD Circuits Week 10 David Bealer of Watchfire Signs Week 11 Dick Krug of Sparton Corporation Week 12 Steve Creswick, Balanced Enterprise Solutions Week 13 Gebhard Neifer, Delphi Week 14 Bev Christian, RIM Week 15 Bev Christian, RIM Week 16 David Bealer of Watchfire Signs Week 17 Brian Ellis Week 18 Denny Fritz, SAIC Week 19 Graham Collins, L3 Communications Week 20 Mark Woolley, PTRL Laboratory Avaya Week 20 Tom Carroll, Boeing Defense, Space and Security Week 21 Brian Ellis and Tom Carroll, Boeing Defense Week 22 Drew Meyer, Benchmark Electronics Inc. Week 23 Bev Christian, RIM Week 24 Steve Gregory, RD Circuits Week 25 Ahne Oosterhof, A-Laser Week 26 Scott Post, Delphi Week 27 Brian Ellis Week 28 Nigel Burtt Week 29 Richard Stadem,GD-AIS Week 30 Robert Wolfe, Kimchuk Inc and Graham Naisbitt, Gen3 Week 31 Bev Christian, RIM Inc, and Denny Fritz, SAIC Week 32 Steve Mikell, supposedly retired Week 33 Mark Woolley, PTRL Laboratory Avaya Week 34 Leland Woodall, CSTech Inc. Week 35 Joe Russeau, Precision Analytical Laboratories Week 36 Patrick Goodyear, PGE Week 37 Dave Elder, Tait Radio Communications Week 38 Steve Mikell, supposedly retired Week 39 Andy Giamis, Commscope Week 40 Gebhard Neifer, Delphi Week 41 Ian Fox, Aero Engine Controls Week 42 Andy Giamis, Commscope Week 43: Bev Christian, RIM, Leland Woodall, CSTech Inc., Patrick Goodyear, PGE and Richard Stadem,GD-AIS Week 44 Patrick Goodyear, PGE Week 45 Dock Brown, Medtronic Week 46 Dock Brown, Medtronic and Bev Christian, RIM Week 47 Graham Collins, L3 Communications Week 48 Mike Fenner, Indium Week 49 Reuven Rokah Week 50 Rex Waygood, Hansatech EMS Week 51 Bev Christian, RIM Week 52 Dock Brown, Medtronic Week 53 Ian Fox, Aero Engine Controls Week 54 Steve Mikell and Phil Anslow, MBDA Systems Week 55 Brian Ellis Week 56 Aleks Lozinsky, Technic Canada Week 57 Tan Geok Ang, NA Week 58 Gebhard Neifer, Delphi and Aleks Lozinsky, Technic Canada Week 59 Rex Waygood, Hansatech EMS Week 60 Torsten Hagge, Kristronics Week 61 Joshua Muonio, Analog Technologies Corp. Week 62 Dock Brown, Medtronics Week 63 Torsten Hagge, Kristronics Week 64 James Head, Crowcon Week 65 Tom Carroll, Boeing Defense, Space and Security Week 66 Lamar Young, SCS Coating Week 67 Steve Creswick, Balanced Enterprise Solutions Week 68 Leland Woodall, CSTech Inc Week 69 Denny Fritz, SAIC Week 70 Mordechai Kirshenbaum Week 71 Amol Kane, AsteelFlash US East Corp Week 72 Lamar Young, Specialty Coating Systems, Inc. Week 73 Keith Calhoun, Sopark Corporation and Joe Russeau, PAL Week 73.1 Mark Kostinovsky, Schlumberger Week 74 Tom Carroll, Boeing Defense and Richard Stadem, GD-AIS Week 75 Graham Naisbitt, Gen3 System - assisted with the Olympic Closing ceremony, building ionic cleanliness test equipment and Graham's golf caddies Week 76 Ian Fox, Aero Engine Controls - assisted with metallographic cross-sections after causing Graham much trouble at Lords for the Test Match England vs South Africa Week 77 Richard Stadem, GD-AIS - assisted with mowing the lawn and acting as trolling motors in a canoe Week 78 Blair Hogg, GAI-Tronics - assisted with a visit to the Reading Vanity Fair outlets for their holiday sale for new winter clothes, getting the Teradyne back up and running and finally assembling a new grill. Week 79 Brian Ellis - assisted with: I'll treat them to Souvla washed down with a bottle of Othello. Since I have two fractured vertebrae, I'm going to ask them to do some weeding; the garden is in a sorry state. I hope they may have some attachments for their machines to help with the task, a harrowing experience. I'll let Kloumpios go and visit his family for a couple of days. Week 80 Mordechai Kirshenbaum - assisted with a new solder joint accelerated reliability test and to debug the software and hardware of the system Week 81 Brian Ellis - assisted with loads of weeding the garden and a couple days or rest and relaxation Week 82 Joe Russeau, Precision Analytical Laboratories - assisted with completing a large number of tests in the lab Week 83 Mark Kostinovsky, Schlumberger - assisted with ???? Fred Cox, MET - assisted with ???? Everyone have a safe week! Dave Hillman Rockwell Collins [log in to unmask] ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________