National Library of Energy BETA

Sample records for nh ct ma

  1. Year Month U.S. Average PAD District I Average CT ME MA NH RI

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    1996 January ... 94.6 96.1 94.5 93.0 92.0 89.1 94.9 92.6 94.7 111.7 February ... 95.9 97.5 96.2 93.2 93.8 90.8 95.6 93.7 94.4 112.9...

  2. Year Month U.S. Average PAD District I Average CT ME MA NH RI

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    1997 January ... 107.9 109.0 108.6 105.2 106.5 102.1 107.0 104.4 106.5 130.4 February ... 105.1 106.0 105.2 102.2 103.4 101.0 104.5...

  3. Year Month U.S. Average PAD District I Average CT ME MA NH RI

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA - 2008 © OECD/IEA - 2008 1993 January ........................... 94.3

  4. Year Month U.S. Average PAD District I Average CT ME MA NH RI

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA - 2008 © OECD/IEA - 2008 1993 January ........................... 94.3

  5. Year Month U.S. Average PAD District I Average CT ME MA NH RI

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA - 2008 © OECD/IEA - 2008 1993 January ........................... 94.3

  6. Year Month U.S. Average PAD District I Average CT ME MA NH RI

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA - 2008 © OECD/IEA - 2008 1993 January ........................... 94.3

  7. Year Month U.S. Average PAD District I Average CT ME MA NH RI

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA - 2008 © OECD/IEA - 2008 1993 January ........................... 94.3

  8. MA 30400

    E-Print Network [OSTI]

    $author.value

    Same description as MA 303 except that material on the qualitative behavior of solutions to nonlinear systems is substituted for material on Laplace transforms...

  9. MA 166

    E-Print Network [OSTI]

    $author.value

    MA 166, Spring 2005. Course Description. Course Materials. Section, Type, Title, Author. Important Notes. ADA policies: please see our ADA Information page...

  10. MA 266

    E-Print Network [OSTI]

    Page 1. MA 266. Final Exam December 16, 2003. All INSTRUCTORS. 7:00 p.m. 9:00 p.m.. LAMBERT FLDHS. Page 2.

  11. MA 151

    E-Print Network [OSTI]

    Page 1. MA 151. Final Exam December 17, 2003. ALL INSTRUCTORS. 1:00 pm. 3:00 pm. LAMBERT FLDHS. Page 2.

  12. MA 224

    E-Print Network [OSTI]

    Page 1. MA 224. Final Exam December 19, 2003 3:20 pm. 5:20 pm. ALL INSTRUCTORS LAMBERT FLDHS. Page 2.

  13. MA 265

    E-Print Network [OSTI]

    Page 1. MA 265. Final Exam December 17, 2003 10:20 am. - 12:20 pm. All INSTRUCTORS LAMBERT FLDHS. Page 2.

  14. MA AP MA MA MA AP AP MA MA MA AP AP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousandReport) | SciTech ConnectFuture |0396 Some Comments onAP MA

  15. MA 261

    E-Print Network [OSTI]

    MA 261. Final Exam December 19, 2003. All INSTRUCTORS. 1:00 p. m. 3:00 pm. LAMBERT FLDHS. Page 2. 3&4. .>ua 50.3.0 - m?ziu?w 2508: a 29:38.03 88.

  16. VA VT CT RI MT WY CO ID UT OR NV CA AZ NM WA TN WV NC AR OK

    Broader source: Energy.gov (indexed) [DOE]

    2 1 Locations of Smart Grid Demonstration and Large-Scale Energy Storage Projects NH 32 Awards Support Projects in 24 States 6 11 MA...

  17. MA351 Supplement

    E-Print Network [OSTI]

    MA351 In-class handouts. Examples from Lecture 3 and 4. An example about nullspaces. Examples about eigenvalues .

  18. Silben Workshop Mnster, 2011 Christine Mooshammer, Haskins Labs, New Haven, CT

    E-Print Network [OSTI]

    , MA) Elliot Saltzman (Haskins & BU, Boston, MA) Hosung Nam (Haskins) Argyo Katsika (Haskins & Yale, CT und Elliot Saltzman) Grundlegende Einheit in der gesprochenen Sprache sind die Gesten Gesten werden

  19. MA 154 FORMULA SHEET

    E-Print Network [OSTI]

    delworth

    2006-01-07

    8/02. MA 154 FORMULA SHEET. ADDITION AND SUBTRACTION FORMULAS sin(u + v) = sinucosv + cosusinv sin(u? v) = sinucosv ? cosusinv cos(u + v)...

  20. MA 15400 FORMULA SHEET

    E-Print Network [OSTI]

    User

    2011-11-07

    11/11. MA 15400 FORMULA SHEET. ADDITION AND SUBTRACTION FORMULAS sin(u + v) = sinucosv + cosusinv sin(u? v) = sinucosv ? cosusinv cos(

  1. MA 15400 Spring 2015

    E-Print Network [OSTI]

    MA 15400 Spring 2015. Form 01. Name: PUID. ClassTime/Day Section Instructor Room. MWF 8:30 am 0021 Delworth, Tim SMITH 108. Online 0004 Delworth...

  2. MA 161 Page

    E-Print Network [OSTI]

    FINAL EXAM - December 12, Monday, 10:20am-12:20pm (Lambert Fieldhouse). Exam Locations and Seating Chart MA 161 Final Exam Practice Problems...

  3. MA 162 Page

    E-Print Network [OSTI]

    MA 162 FINAL EXAM - Wednesday, December 12 (3:30pm - 5:30pm). Seating Chart (LAMBERT FIELDHOUSE) Exam #1 - STUDY GUIDE Exam #2 - STUDY

  4. MA 266 Lecture 35

    E-Print Network [OSTI]

    2014-11-20

    MA 266 Lecture 35. 7.9 Nonhomogeneous Linear Systems. In this section, we consider the nonhomogeneous system x. /. = Ax + g(t). The general solution can...

  5. 5, 1133111375, 2005 NH total ozone

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    ACPD 5, 1133111375, 2005 NH total ozone increase S. Dhomse et al. Title Page Abstract Introduction On the possible causes of recent increases in NH total ozone from a statistical analysis of satellite data from License. 11331 #12;ACPD 5, 1133111375, 2005 NH total ozone increase S. Dhomse et al. Title Page Abstract

  6. Thermomagnetic Torque in Nh3

    E-Print Network [OSTI]

    Adair, Thomas W.; McClurg, G. R.

    1970-01-01

    raises the question of whether the Scott torque has the same sign as the molecular g~ factor in ammonia as it does in all other gases. The research reported here shows that NH3 is quite normal. Progress on a detailed theory for the transport... torque. The new ap- paratus' used in the present work gave no measur- able torque at zero magnetic field, and therefore no correction was needed. The ammonia was high-purity gas from the Mathe- son Gas Products Company with a stated purity of 99. 99...

  7. Geography MA Program Orientation

    E-Print Network [OSTI]

    Mower, James E.

    Geography MA Program Orientation Department of Geography and Planning University at Albany #12; 36/thesis #12;Specialization Tracks Human Geography Physical Geography Geographic Information Systems See of Geography and Planning faculty #12;The Comprehensive Exam The "comps" are often given near the end

  8. Publisher's Note: "Ab initio potential energy surfaces for NH,,3 -...-NH,,3 -

    E-Print Network [OSTI]

    Publisher's Note: "Ab initio potential energy surfaces for NH,,3 - ...-NH,,3 - ... with analytical.174.143.43. Redistribution subject to AIP license or copyright; see http://jcp.aip.org/about/rights_and_permissions #12;

  9. Sorghum Ma5 and Ma6 maturity genes

    E-Print Network [OSTI]

    Brady, Jeffrey Alan

    2009-05-15

    The Ma5 and Ma6 maturity loci in sorghum contain genes interacting epistatically to block flowering until an appropriate daylength is met. Because sorghum is a crop of tropical origin, its critical daylength is close to ...

  10. MA 152 Exam 1 Memo

    E-Print Network [OSTI]

    math

    2015-08-26

    that evening on the MA 15910 web page (www.math.purdue.edu/MA15910). 3) The exam is self-explanatory. No questions will be allowed unless a student...

  11. A new 40 MA ranchero explosive pulsed power system

    SciTech Connect (OSTI)

    Goforth, James; Herrera, Dennis; Oona, Hank; Torres, David; Atchison, W L; Colgate, S A; Griego, J R; Guzik, J; Holtkamp, D B; Idzorek, G; Kaul, A; Kirkpatrick, R C; Menikoff, R; Reardon, P T; Reinovsky, R E; Rousculp, C L; Sgro, A G; Tabaka, L J; Tierney, T E; Watt, R G

    2009-01-01

    We are developing a new high explosive pulsed power (HEPP) system based on the 1.4 m long Ranchero generator which was developed in 1999 for driving solid density z-pinch loads. The new application requires approximately 40 MA to implode similar liners, but the liners cannot tolerate the 65 {micro}s, 3 MA current pulse associated with delivering the initial magnetic flux to the 200 nH generator. To circumvent this problem, we have designed a system with an internal start switch and four explosively formed fuse (EFF) opening switches. The integral start switch is installed between the output glide plane and the armature. It functions in the same manner as a standard input crowbar switch when armature motion begins, but initially isolates the load. The circuit is completed during the flux loading phase using post hole convolutes. Each convolute attaches the inner (coaxial) output transmission line to the outside of the outer coax through a penetration of the outer coaxial line. The attachment is made with the conductor of an EFF at each location. The EFFs conduct 0.75 MA each, and are actuated just after the internal start switch connects to the load. EFFs operating at these parameters have been tested in the past. The post hole convolutes must withstand as much as 80 kV at peak dl/dt during the Ranchero load current pulse. We describe the design of this new HEPP system in detail, and give the experimental results available at conference time. In addition, we discuss the work we are doing to test the upper current limits of a single standard size Ranchero module. Calculations have suggested that the generator could function at up to {approx}120 MA, the rule of thumb we follow (1 MA/cm) suggests 90 MA, and simple flux compression calculations, along with the {approx}4 MA seed current available from our capacitor bank, suggests 118 MA is the currently available upper limit.

  12. MA Org Chart, August 13, 2015

    Energy Savers [EERE]

    MA-72 Administration, MIS, and Executive Commitments Group Shena Kennerly MA-74 Office of History and Archives MA-75 Terrence Fehner Office of Federal Advisory Committee Management...

  13. MA 15300Y Fall 2015

    E-Print Network [OSTI]

    Devlin, Patrick M

    2015-08-22

    Course Materials. The documents that are relevant for the online section only are available at: www.math.purdue.edu/ma153y. General course info and...

  14. MA303: Practice Test 1

    E-Print Network [OSTI]

    2015-09-29

    MA303: Practice Test 1. Answer all questions, showing your working. Write your name on the question paper and hand it in together with your solutions.

  15. MA303: Practice Test 2

    E-Print Network [OSTI]

    2015-11-06

    MA303: Practice Test 2. Answer all questions, showing your working. Write your name on the question paper and hand it in together with your solutions.

  16. WIND DATA REPORT FALMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT FALMOUTH, MA June1, 2004 to August 31, 2004. Prepared for Massachusetts Technology...................................................................................................................... 8 Wind Speed Time Series............................................................................................................. 8 Wind Speed Distributions

  17. MA 154 Schedule, Spring 2004

    E-Print Network [OSTI]

    math

    2015-02-11

    MA 15400 MWF and Online Sections, Spring 2015. Click on Lesson ---PP to watch a recorded lesson in YouTube. Some lessons are divided into two parts,...

  18. CAES MaCS Home

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    cross-cutting capabilities that support the Center for Advanced Energy Studies' (CAES) mission in multiple initiative areas. MaCS is largely made possible through its...

  19. WIND DATA REPORT Nantucket, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Nantucket, MA March 1st 2006 to May 31th 2006 Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distribut

  20. MA 15300 Lesson 15 Inequality

    E-Print Network [OSTI]

    Patrick Devlin

    2014-05-12

    1. MA 15300 Lesson 15. Inequality: - a statement that two quantities or expressions are not necessarily equal. - an inequality can be expressed using any of the...

  1. Discovery and utilization of sorghum genes (Ma5/Ma6)

    DOE Patents [OSTI]

    Mullet, John E; Rooney, William L; Klein, Patricia E; Morishige, Daryl; Murphy, Rebecca; Brady, Jeff A

    2012-11-13

    Methods and composition for the production of non-flowering or late flowering sorghum hybrid. For example, in certain aspects methods for use of molecular markers that constitute the Ma5/Ma6 pathway to modulate photoperiod sensitivity are described. The invention allows the production of plants having improved productivity and biomass generation.

  2. Apple Tree, NH Big Tree for May By Anne Krantz, NH Big Tree Team,

    E-Print Network [OSTI]

    New Hampshire, University of

    Apple Tree, NH Big Tree for May By Anne Krantz, NH Big Tree Team, UNH Cooperative Extension The explosion of apple blossoms in May transforms the most gnarled old tree into a delicate cloud of beauty (1817-1862) in his essay "The Wild Apple Tree," described the blossoms perfectly: `The flowers

  3. Taught degree MA in Film Studies

    E-Print Network [OSTI]

    Sussex, University of

    in The Times Good University Guide 2013, in the top 15 in the UK in The Complete University Guide 2014 and Media (p123) MA in International Journalism (p113) MA in Journalism and Documentary Practice (p113) MA in Journalism and Media Studies (p113) MA in Media and Cultural Studies (p123) MA in Media Practice

  4. MA15900 Expectations/Suggestions

    E-Print Network [OSTI]

    odavis

    2011-08-21

    WEB PAGE: math.purdue.edu/MA15900 or go to www.math.purdue.edu and then click on ... wide and an inch deep. Be careful about assuming you already.

  5. MA15900 Expectations/Suggestions

    E-Print Network [OSTI]

    Owen Davis

    2008-08-29

    WEB PAGE: math.purdue.edu/MA 15900 or go to www.math.purdue.edu and ... are available on the respective course web pages.) ... wide and an inch deep.

  6. MA 154 Schedule, Spring 2004

    E-Print Network [OSTI]

    math

    2015-01-05

    MA 13800 Calendar Spring 2015. Exam 1: Monday, February 9, 2015 at 8:00 in MATH 175. Exam 2: Monday, March 9, 2015 at 6:30 in MATH 175. Exam 3:...

  7. MA 154 Schedule, Spring 2004

    E-Print Network [OSTI]

    math

    2013-03-20

    MA 15400 Online Lessons Links. Spring 2013. PP = PowerPoint. Boiler Cast Link = A recording of that days class. (this link will take you to all of the recordings).

  8. Final Exam for MA 265

    E-Print Network [OSTI]

    The Final Exam For MA 265: Fall 2002. Date: Thursday, December 12, 2002. Time: 3:20 - 5:20 pm. Room: Lambert Fieldhouse, or check the Online Catalog of

  9. Utilizing a simple CT dosimetry phantom for the comprehension of the operational characteristics of CT AEC systems

    SciTech Connect (OSTI)

    Tsalafoutas, Ioannis A.; Varsamidis, Athanasios; Thalassinou, Stella; Efstathopoulos, Efstathios P.

    2013-11-15

    Purpose: To investigate the utility of the nested polymethylacrylate (PMMA) phantom (which is available in many CT facilities for CTDI measurements), as a tool for the presentation and comparison of the ways that two different CT automatic exposure control (AEC) systems respond to a phantom when various scan parameters and AEC protocols are modified.Methods: By offsetting the two phantom's components (the head phantom and the body ring) half-way along their longitudinal axis, a phantom with three sections of different x-ray attenuation was created. Scan projection radiographs (SPRs) and helical scans of the three-section phantom were performed on a Toshiba Aquilion 64 and a Philips Brilliance 64 CT scanners, with different scan parameter selections [scan direction, pitch factor, slice thickness, and reconstruction interval (ST/RI), AEC protocol, and tube potential used for the SPRs]. The dose length product (DLP) values of each scan were recorded and the tube current (mA) values of the reconstructed CT images were plotted against the respective Z-axis positions on the phantom. Furthermore, measurements of the noise levels at the center of each phantom section were performed to assess the impact of mA modulation on image quality.Results: The mA modulation patterns of the two CT scanners were very dissimilar. The mA variations were more pronounced for Aquilion 64, where changes in any of the aforementioned scan parameters affected both the mA modulations curves and DLP values. However, the noise levels were affected only by changes in pitch, ST/RI, and AEC protocol selections. For Brilliance 64, changes in pitch affected the mA modulation curves but not the DLP values, whereas only AEC protocol and SPR tube potential selection variations affected both the mA modulation curves and DLP values. The noise levels increased for smaller ST/RI, larger weight category AEC protocol, and larger SPR tube potential selection.Conclusions: The nested PMMA dosimetry phantom can be effectively utilized for the comprehension of CT AEC systems performance and the way that different scan conditions affect the mA modulation patterns, DLP values, and image noise. However, in depth analysis of the reasons why these two systems exhibited such different behaviors in response to the same phantom requires further investigation which is beyond the scope of this study.

  10. NETL CT Imaging Facility

    ScienceCinema (OSTI)

    None

    2014-05-21

    NETL's CT Scanner laboratory is equipped with three CT scanners and a mobile core logging unit that work together to provide characteristic geologic and geophysical information at different scales, non-destructively.

  11. NETL CT Imaging Facility

    SciTech Connect (OSTI)

    2013-09-04

    NETL's CT Scanner laboratory is equipped with three CT scanners and a mobile core logging unit that work together to provide characteristic geologic and geophysical information at different scales, non-destructively.

  12. Taught degrees MA in International Journalism

    E-Print Network [OSTI]

    Sussex, University of

    and Film at Sussex is ranked in the top 10 places to study in the UK in The Times Good University GuideEssentials Taught degrees MA in International Journalism MA in Journalism and Documentary Practice Journalism, MA in Journalism and Documentary Practice, MA in Journalism and Media Studies IELTS 6

  13. Scaling of X pinches from 1 MA to 6 MA.

    SciTech Connect (OSTI)

    Bland, Simon Nicholas; McBride, Ryan D.; Wenger, David Franklin; Sinars, Daniel Brian; Chittenden, Jeremy Paul; Pikuz, Sergei A.; Harding, Eric; Jennings, Christopher A.; Ampleford, David J.; Yu, Edmund P.; Cuneo, Michael Edward; Shelkovenko, Tatiana A.; Hansen, Stephanie B.

    2010-09-01

    This final report for Project 117863 summarizes progress made toward understanding how X-pinch load designs scale to high currents. The X-pinch load geometry was conceived in 1982 as a method to study the formation and properties of bright x-ray spots in z-pinch plasmas. X-pinch plasmas driven by 0.2 MA currents were found to have source sizes of 1 micron, temperatures >1 keV, lifetimes of 10-100 ps, and densities >0.1 times solid density. These conditions are believed to result from the direct magnetic compression of matter. Physical models that capture the behavior of 0.2 MA X pinches predict more extreme parameters at currents >1 MA. This project developed load designs for up to 6 MA on the SATURN facility and attempted to measure the resulting plasma parameters. Source sizes of 5-8 microns were observed in some cases along with evidence for high temperatures (several keV) and short time durations (<500 ps).

  14. Category:Concord, NH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButte County,Camilla, Georgia: Energy014771°,NorthCLEAN WebinarNH Jump to:

  15. MA.+'

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and700, 1.Reports1E~LONG-TERMLetter

  16. Gabriel Sosa's Material for MA26200

    E-Print Network [OSTI]

    MA 26200: Linear Algebra and Differential Equations. Review Material. Trigonometric Identities Summary Review of Integration Techniques. Quiz Information.

  17. Rehabilitation Counseling Masters of Arts (MA)

    E-Print Network [OSTI]

    Rehabilitation Counseling Masters of Arts (MA) STUDENT HANDBOOK Policies and Procedures of the Master of Arts (MA) Rehabilitation Counseling Program Michigan State University Department of Counseling;_____________________________________________ Student Handbook - MA Rehabilitation Counseling Program Page 2 of 32 Table of Contents Content Page

  18. DOE - Office of Legacy Management -- Beverly MA Site - MA 04

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co -VANaval ,, *'Aliquippa - PABeverly MA

  19. MA Mortenson | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'SHeavyAgency (IRENA) JumpLiterature Review HomeM-7 Technologies JumpMA

  20. US NE MA Site Consumption

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979Coal Consumers inYear JanSales Type: Sales120NE MA Site

  1. CT Solar Lease

    Broader source: Energy.gov [DOE]

    CT Solar Lease allows homeowners to lease a photovoltaic (PV) or solar thermal system, with fixed monthly payments, for a term of 20 years, at no upfront down payment.* This program, which takes...

  2. nh Gi Tn Hi Ti Nguyn Thin Nhin do Trn Du Deep Horizon Gim nh bt Nhm Tng ni

    E-Print Network [OSTI]

    vng v c kim. Thit b dy cu vng s v tnh bt phi nhng loi c khc cng nh nhng c th cn qu nh ca l thi gian ngh ngi. Cc d n cng cung cp cho nhng ng dn tham gia hai loi thit b nh bt thay th - tr

  3. Proton transfer dynamics of the reaction H3O ,,NH3 ,H2O...NH4

    E-Print Network [OSTI]

    Farrar, James M.

    Proton transfer dynamics of the reaction H3O ,,NH3 ,H2O...NH4 studied using the crossed, Rochester, New York 14627 Received 29 September 2003; accepted 8 October 2003 The proton transfer reaction sharply asymmetry, and the maximum is close to the velocity and direction of the precursor ammonia beam

  4. -CT CT)Computed Tomography(. ,. , -100 ,

    E-Print Network [OSTI]

    Pinsky, Ross

    sigma . ." , : ·B.sc "BA- · " Lean/six sigma - ·-Green/Black Belt ·. · , , .' , ·" . " * . : ·) B.A ,(-. ·4-6. ·) QFD, CtQ breakdown, DfSS, SPC, AQP, FMEA, Control Plan.( ·Six Sigma GB/EE/Mechanics/Physics/SW/Algorithms/Materials /Application Development) · · - · · Process Improvement Engineer : · . · -six

  5. Taught degree MA in Film Studies: Global Film Cultures

    E-Print Network [OSTI]

    Sussex, University of

    10 places to study in the UK in The Complete University Guide 2012-13 and The Times Good UniversityD in Film Studies Related degrees MA in Creative Media Practice (p119) MA in Digital Documentary (p120) MA in Digital Media (p121) MA in Gender and Media (p121) MA in Journalism and Documentary Practice (p111) MA

  6. MA/STAT 519's Home Page

    E-Print Network [OSTI]

    Good "working" knowledge of linear algebra and mathematical analysis. (In Purdue, these materials are taught in MA 265, 351, 353, 511, 440+442 and 504.).

  7. MA 26200 Class Information (Fall 2013)

    E-Print Network [OSTI]

    FINAL EXAM - Tuesday, December 10th (1:00pm - 3:00pm) LAMBERT Fieldhouse. Seating Chart (Lambert Fieldhouse) MA 262 Final Exam resources

  8. MA 26600 Class Information (Fall 2012)

    E-Print Network [OSTI]

    ... for Important Announcements and Alerts ***. MA 266 FINAL EXAM - Tuesday, December 11 (10:30am - 12:30pm). Seating Chart (LAMBERT FIELDHOUSE)...

  9. NFolkstoneCt PepperPikeRd

    E-Print Network [OSTI]

    Kamat, Vineet R.

    Sturbridge Ct Paisley Ct CedarBendDr Stanton Ct BonisteelBlvd Middleton Dr Pointe Ln Charter Pl Larchmont Dr

  10. Earn your MA.Ed. in Adult Education from East Carolina University -Completely Online

    E-Print Network [OSTI]

    Gopalakrishnan, K.

    Earn your MA.Ed. in Adult Education from East Carolina University - Completely Online East Carolina University's accredited adult education program requires 36 semester experience in an adult education setting, an internship is recommended. Required

  11. CHARACTERIZATION OF THE SELECTIVE REDUCTION OF NO BY NH3

    E-Print Network [OSTI]

    Lucas, D.

    2014-01-01

    in this study. with coal type. limiting the NH The optimumlight oil and several types of coal, and have provided somecombustion air. Several types of coal with different sulfur

  12. Taught degrees MA in Journalism and Documentary Practice

    E-Print Network [OSTI]

    Sussex, University of

    in the top 10 places to study in the UK in The Complete University Guide 2012-13 and The Times GoodEssentials Taught degrees MA in Journalism and Documentary Practice MA in Journalism and Media Studies MA in Multimedia Journalism Related degrees MA in Creative Media Practice (p119) MA in Digital

  13. EV Community Readiness projects: New York City and Lower Hudson...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    EV Community Readiness projects: New York City and Lower Hudson Valley Clean Communities, Inc. (NY, MA, PA); NYSERDA (ME, NH, VT, MA, RI, CT, NY, NJ, PA, DE, MD, DC) EV Community...

  14. Ultralow dose computed tomography attenuation correction for pediatric PET CT using adaptive statistical iterative reconstruction

    SciTech Connect (OSTI)

    Brady, Samuel L.; Shulkin, Barry L.

    2015-02-15

    Purpose: To develop ultralow dose computed tomography (CT) attenuation correction (CTAC) acquisition protocols for pediatric positron emission tomography CT (PET CT). Methods: A GE Discovery 690 PET CT hybrid scanner was used to investigate the change to quantitative PET and CT measurements when operated at ultralow doses (1035 mA s). CT quantitation: noise, low-contrast resolution, and CT numbers for 11 tissue substitutes were analyzed in-phantom. CT quantitation was analyzed to a reduction of 90% volume computed tomography dose index (0.39/3.64; mGy) from baseline. To minimize noise infiltration, 100% adaptive statistical iterative reconstruction (ASiR) was used for CT reconstruction. PET images were reconstructed with the lower-dose CTAC iterations and analyzed for: maximum body weight standardized uptake value (SUV{sub bw}) of various diameter targets (range 837 mm), background uniformity, and spatial resolution. Radiation dose and CTAC noise magnitude were compared for 140 patient examinations (76 post-ASiR implementation) to determine relative dose reduction and noise control. Results: CT numbers were constant to within 10% from the nondose reduced CTAC image for 90% dose reduction. No change in SUV{sub bw}, background percent uniformity, or spatial resolution for PET images reconstructed with CTAC protocols was found down to 90% dose reduction. Patient population effective dose analysis demonstrated relative CTAC dose reductions between 62% and 86% (3.2/8.30.9/6.2). Noise magnitude in dose-reduced patient images increased but was not statistically different from predose-reduced patient images. Conclusions: Using ASiR allowed for aggressive reduction in CT dose with no change in PET reconstructed images while maintaining sufficient image quality for colocalization of hybrid CT anatomy and PET radioisotope uptake.

  15. MA16010 : Applied Calculus I (Distance) Fall 2015

    E-Print Network [OSTI]

    2015-08-23

    COURSE WEB PAGE: http://www.math.purdue.edu/ma16010. PREREQUISITE: MA 15400 C- or better, MA 15800 C- or better, or ALEKS score of 75% or above.

  16. MA-504, Fall 2015, Test 2

    E-Print Network [OSTI]

    2015-10-23

    MA-504, Fall 2015, Test 2. Name: Answers. Problem 1. (a) Using the ?? definition, prove that f(x)=1/x is continuous on R \\ {0}. (b) Prove that the same function...

  17. M.A. TESOL PROGRAM GRADUATE HANDBOOK

    E-Print Network [OSTI]

    M.A. TESOL PROGRAM GRADUATE HANDBOOK Michigan State University Department of Linguistics........................................................................... 7 IV. Selection of Advisor and Thesis Committee, materials development, and assessment. It is believed that professionals in the field of TESOL should have

  18. MA in Globalization Studies Student Handbook

    E-Print Network [OSTI]

    Thompson, Michael

    MA in Globalization Studies Student Handbook 2014-15 Institute on Globalization and the Human://globalization.mcmaster.ca Meetings and materials are available in accessible formats on request #12;Table of Contents Welcome...................................................................................................................................................3 Selecting a Topic

  19. CT NC0

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co -VANaval ,, *' ;x-L* d! CT NC0 - i , ,.

  20. Montana State University 1 MA in History

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Montana State University 1 MA in History Master of Arts Degree, History The Department of History and Philosophy Graduate Program at MSU is designed to train students to think historically. The department offers concentrated training in three particular areas: the history of science, technology

  1. Programme Handbook MA in English Language

    E-Print Network [OSTI]

    Molinari, Marc

    Programme Handbook 2014-15 MA in English Language Teaching: Online #12; Modern Languages of postgraduate study at one of the UK's leading research universities. The Handbook should be read in conjunction with the 2014-15 student information available on SUSSED and the Graduate School Handbook produced

  2. Business Management BA / MA (Hons) Key details

    E-Print Network [OSTI]

    Painter, Kevin

    Business Management BA / MA (Hons) Key details Duration: Full-time: 3 years (BA) / 4 years (MSc Management degree programme follows a number of guiding principles that mirror the values of managers of leading organisations and reflect current business management thinking. In the first two years of all

  3. MA Ph.D. Qualifying Exam Directions

    E-Print Network [OSTI]

    Liblit, Ben

    MA Ph.D. Qualifying Exam Fall 2010 Directions: Use careful reasoning to develop the answers to each numerical answers. You may use the LZGS text for reference for this exam. 1. Explain in detail why the mean with the system. Each query type i also generates a small amount of further processing time, with average Si

  4. MA265 Linear Algebra Sample Exam 1

    E-Print Network [OSTI]

    page 1. Purdue University. MA265 Linear Algebra Sample Exam 1. Date: February 20, 2015 Duration: 50 ... 1. Determine A such that (let-(A). 7 .110 [p. 1100 O r. In. )1 A n 1. \\\\\\\\l_ he zlxrs M. \\11. '01 .... Rep'mr'ata. 1 F'ncl '3 m muVVnN

  5. Selective Catalytic Oxidation (SCO) of NH3 to N2 for Hot Exhaust...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Oxidation (SCO) of NH3 to N2 for Hot Exhaust Treatment Selective Catalytic Oxidation (SCO) of NH3 to N2 for Hot Exhaust Treatment Investigation of a series of transition metal...

  6. Study of On-Board Ammonia (NH3) Generation for SCR Operation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Study of On-Board Ammonia (NH3) Generation for SCR Operation Study of On-Board Ammonia (NH3) Generation for SCR Operation The feasibility of on-board ammonia generation was...

  7. 1 -NH Coverts Project: 1995-2002 Program Evaluation The New Hampshire Coverts Project

    E-Print Network [OSTI]

    New Hampshire, University of

    1 - NH Coverts Project: 1995-2002 Program Evaluation The New Hampshire Coverts Project In Their Own, sexual orientation, or veteran's status. #12;2 - NH Coverts Project: 1995-2002 Program Evaluation of responses to open-ended question (#12) 19 #12;3 - NH Coverts Project: 1995-2002 Program Evaluation

  8. CT reconstruction techniques for improved accuracy of lung CT airway measurement

    SciTech Connect (OSTI)

    Rodriguez, A.; Ranallo, F. N.; Judy, P. F.; Gierada, D. S.; Fain, S. B.

    2014-11-01

    Purpose: To determine the impact of constrained reconstruction techniques on quantitative CT (qCT) of the lung parenchyma and airways for low x-ray radiation dose. Methods: Measurement of small airways with qCT remains a challenge, especially for low x-ray dose protocols. Images of the COPDGene quality assurance phantom (CTP698, The Phantom Laboratory, Salem, NY) were obtained using a GE discovery CT750 HD scanner for helical scans at x-ray radiation dose-equivalents ranging from 1 to 4.12 mSv (12100 mA s currenttime product). Other parameters were 40 mm collimation, 0.984 pitch, 0.5 s rotation, and 0.625 mm thickness. The phantom was sandwiched between 7.5 cm thick water attenuating phantoms for a total length of 20 cm to better simulate the scatter conditions of patient scans. Image data sets were reconstructed using STANDARD (STD), DETAIL, BONE, and EDGE algorithms for filtered back projection (FBP), 100% adaptive statistical iterative reconstruction (ASIR), and Veo reconstructions. Reduced (half) display field of view (DFOV) was used to increase sampling across airway phantom structures. Inner diameter (ID), wall area percent (WA%), and wall thickness (WT) measurements of eight airway mimicking tubes in the phantom, including a 2.5 mm ID (42.6 WA%, 0.4 mm WT), 3 mm ID (49.0 WA%, 0.6 mm WT), and 6 mm ID (49.0 WA%, 1.2 mm WT) were performed with Airway Inspector (Surgical Planning Laboratory, Brigham and Womens Hospital, Boston, MA) using the phase congruency edge detection method. The average of individual measures at five central slices of the phantom was taken to reduce measurement error. Results: WA% measures were greatly overestimated while IDs were underestimated for the smaller airways, especially for reconstructions at full DFOV (36 cm) using the STD kernel, due to poor sampling and spatial resolution (0.7 mm pixel size). Despite low radiation dose, the ID of the 6 mm ID airway was consistently measured accurately for all methods other than STD FBP. Veo reconstructions showed slight improvement over STD FBP reconstructions (4%9% increase in accuracy). The most improved ID and WA% measures were for the smaller airways, especially for low dose scans reconstructed at half DFOV (18 cm) with the EDGE algorithm in combination with 100% ASIR to mitigate noise. Using the BONE + ASIR at half BONE technique, measures improved by a factor of 2 over STD FBP even at a quarter of the x-ray dose. Conclusions: The flexibility of ASIR in combination with higher frequency algorithms, such as BONE, provided the greatest accuracy for conventional and low x-ray dose relative to FBP. Veo provided more modest improvement in qCT measures, likely due to its compatibility only with the smoother STD kernel.

  9. Effects of reactant rotational excitations on H{sub 2} + NH{sub 2} ? H + NH{sub 3} reactivity

    SciTech Connect (OSTI)

    Song, Hongwei; Guo, Hua

    2014-12-28

    Rotational mode specificity of the title reaction is examined using an initial state selected time-dependent wave packet method on an accurate ab initio based global potential energy surface. This penta-atomic reaction presents an ideal system to test several dynamical approximations, which might be useful for future quantum dynamics studies of polyatomic reactions, particularly with rotationally excited reactants. The first approximation involves a seven-dimensional (7D) model in which the two non-reactive NH bonds are fixed at their equilibrium geometry. The second is the centrifugal sudden (CS) approximation within the 7D model. Finally, the J-shifting (JS) model is tested, again with the fixed NH bonds. The spectator-bond approximation works very well in the energy range studied, while the centrifugal sudden and J-shifting integral cross sections (ICSs) agree satisfactorily with the coupled-channel counterparts in the low collision energy range, but deviate at the high energies. The calculated integral cross sections indicate that the rotational excitation of H{sub 2} somewhat inhibits the reaction while the rotational excitations of NH{sub 2} have little effect. These findings are compared with the predictions of the sudden vector projection model. Finally, a simple model is proposed to predict rotational mode specificity using K-averaged reaction probabilities.

  10. MA Org Chart, January 5, 2016

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematics AndBeryllium Disease | Department of0 Inspection BEFORE9 -Lower Colorado River AuthorityMA

  11. MA/Ph.D. in Architecture Academic Graduate Student Handbook

    E-Print Network [OSTI]

    MA/Ph.D. in Architecture Academic Graduate Student Handbook #12;MA/Ph.D. in Architecture | Graduate Student Handbook (rev 10.14) 1 OVERVIEW The Department of Architecture in the School of Architecture of Arts) MA and Doctor of Philosophy (Ph.D.) in Architecture. This handbook describes the requirements

  12. American Studies -MA American Studies -Non-Degree Student

    E-Print Network [OSTI]

    Menasco, William

    Applied Economics: Health Services - CERT Applied Economics: Info. & Internet - CERT Applied Economics History - MA Arts Management - MA Arts Management (Non-Degree) - Non-Degree Student Biological Sciences Gender Studies - Non-Degree Student Global Gender Studies - PhD History - MA History - PhD History (Non

  13. InThrMa | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy ResourcesOrder at 8, 13 (Vt. Water Res. Bd. May,InThrMa Jump to: navigation,

  14. MA - Office of Management - Energy Conservation Plan

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRDEnergyTurbineProcessesEnergy | Department ofMA Energy

  15. MA Org Chart, August 13, 2015

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRDEnergyTurbineProcessesEnergy | Department ofMA Energy1 Ingrid

  16. MA Org Chart, November 16, 2015

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRDEnergyTurbineProcessesEnergy | Department ofMA Energy1

  17. SU-E-I-25: Determining Tube Current, Tube Voltage and Pitch Suitable for Low- Dose Lung Screening CT

    SciTech Connect (OSTI)

    Williams, K; Matthews, K

    2014-06-01

    Purpose: The quality of a computed tomography (CT) image and the dose delivered during its acquisition depend upon the acquisition parameters used. Tube current, tube voltage, and pitch are acquisition parameters that potentially affect image quality and dose. This study investigated physicians' abilities to characterize small, solid nodules in low-dose CT images for combinations of current, voltage and pitch, for three CT scanner models. Methods: Lung CT images was acquired of a Data Spectrum anthropomorphic torso phantom with various combinations of pitch, tube current, and tube voltage; this phantom was used because acrylic beads of various sizes could be placed within the lung compartments to simulate nodules. The phantom was imaged on two 16-slice scanners and a 64-slice scanner. The acquisition parameters spanned a range of estimated CTDI levels; the CTDI estimates from the acquisition software were verified by measurement. Several experienced radiologists viewed the phantom lung CT images and noted nodule location, size and shape, as well as the acceptability of overall image quality. Results: Image quality for assessment of nodules was deemed unsatisfactory for all scanners at 80 kV (any tube current) and at 35 mA (any tube voltage). Tube current of 50 mA or more at 120 kV resulted in similar assessments from all three scanners. Physician-measured sphere diameters were closer to actual diameters for larger spheres, higher tube current, and higher kV. Pitch influenced size measurements less for larger spheres than for smaller spheres. CTDI was typically overestimated by the scanner software compared to measurement. Conclusion: Based on this survey of acquisition parameters, a low-dose CT protocol of 120 kV, 50 mA, and pitch of 1.4 is recommended to balance patient dose and acceptable image quality. For three models of scanners, this protocol resulted in estimated CTDIs from 2.93.6 mGy.

  18. Hollow-fiber gas-membrane process for removal of NH{sub 3} from solution of NH{sub 3} and CO{sub 2}

    SciTech Connect (OSTI)

    Qin, Y.; Cabral, J.M.S.; Wang, S.

    1996-07-01

    A hollow-fiber supported gas membrane process for the separation of NH{sub 3} from aqueous solutions containing both NH{sub 3} and CO{sub 2} was investigated theoretically and experimentally. A lumen laminar flow and radial diffusion model was applied to calculate the membrane wall transfer coefficient from the data stripping a single volatile component, NH{sub 3} or CO{sub 2}, from their individual aqueous solutions. Influence of the type of membranes and operating conditions on mass-transfer rate were discussed, especially the influence of the membrane transfer coefficient on the film mass-transfer coefficient in the lumen. Appropriate configurations of the hollow-fiber modules for stripping of a single component were analyzed to optimize mass transfer. To predict the stripping of NH{sub 3} from a solution containing NH{sub 3} and CO{sub 2}, a mathematical model incorporating local chemical equilibria and Nernst-Planck diffusion was developed to describe the mass transport. The models described the experimental data fairly well. The experimental results showed that the supported gas membrane process can be used to remove NH{sub 3} effectively from aqueous media containing NH{sub 3} and CO{sub 2}.

  19. Modeling Study of SCR/PGM Interactions in NH3 Slip Catalysts

    Broader source: Energy.gov [DOE]

    The focus of this research is on the optimization of NH3 slip catalyst performance by simulating the behavior of different SCR/PGM configurations.

  20. Opal Palmer Adisa. It Begins With Tears (Portsmouth, NH: Heinemann Press, 1997).

    E-Print Network [OSTI]

    Devlin, Leslie

    1997-01-01

    Opal Palmer Adisa. It Begins With Tears (Portsmouth, NH:Tears, is the first novel of Opal Palmer Adisa. She was born

  1. Limited View Angle Iterative CT Reconstruction

    E-Print Network [OSTI]

    . Connelly, "CT Technologies," in Aspects of Explosives Detection, Elsevier 2009. Dual energy CT Z. Ying, R. Nam and C. R. Crawford, "Dual energy computed tomography for explosive detection," Journal of X

  2. The 300 mA SRF ERL

    SciTech Connect (OSTI)

    Ben-Zvi, Ilan

    2013-11-07

    Energy Recovery Linacs (ERL) are important for a variety of applications, from high-power Free-Electron Lasers (FEL) to polarized-electron polarized-proton colliders. The ERL current is arguably the most important characteristic of ERLs for such applications. With that in mind, the Collider-Accelerator Department at Brookhaven National Laboratory embarked on the development of a 300 mA ERL to serve as an R and D test-bed for high-current ERL technologies. These include high-current, extremely well damped superconducting accelerating cavities, high-current superconducting laser-photocathode electron guns and high quantum-efficiency photocathodes. In this presentation I will cover these ERL related developments.

  3. Course Materials ALWAYS check the MA 15300 website FIRST ...

    E-Print Network [OSTI]

    Devlin, Patrick M

    2015-01-03

    policies and understand all the course materials on the website. ALWAYS check the MA 15300 website FIRST when searching for class information.

  4. Course Materials ALWAYS check the MA 15300 website FIRST ...

    E-Print Network [OSTI]

    Devlin, Patrick M

    2015-08-22

    Course Materials. Go to the MA 15300 website and read through all the course materials. It is your responsibility to know all the course policies and...

  5. MA16010 Trig, Exponential and Logarithm Review Material

    E-Print Network [OSTI]

    2015-06-15

    MA16010 Trig, Exponential and Logarithm Review Material. Trig, Exponential and Logarithm Contents: We have made some changes to the lecture coverage...

  6. MA 16020 EXAM FORMULAS THE SECOND DERIVATIVE TEST ...

    E-Print Network [OSTI]

    2015-10-21

    MA 16020 EXAM FORMULAS. THE SECOND DERIVATIVE TEST. Suppose f is a function of two variables x and y, and that all the second-order partial...

  7. MA16020 : Applied Calculus II Online Distance Course Summer ...

    E-Print Network [OSTI]

    2015-07-24

    COURSE WEB PAGE: http://www.math.purdue.edu/ma16020. TEXTBOOK: No textbooks required to purchase. Course contents will be provided to students.

  8. Ground Rules for MA 30300 Summer 2015 (Online class) Instructor ...

    E-Print Network [OSTI]

    2015-05-05

    Ground Rules for MA 30300 Summer 2015 (Online class). Instructor: Prof. Veronica Quitalo (vquitalo@purdue.edu). Online lectures: Recorded/livestream...

  9. Study Guide for Applied Calculus II, MA 16020

    E-Print Network [OSTI]

    2014-08-14

    Study Guide for MA 16020 Credit Exam. Students who pass the credit ... Practice Problems. The lesson plan lists the ... the instructions on the form. Good luck!

  10. Study Guide for Applied Calculus I, MA 16010

    E-Print Network [OSTI]

    2015-01-22

    Study Guide for MA 16010 Credit Exam. Students who pass the credit ... Practice Problems. The lesson plan lists the ... the instructions on the form. Good luck! 1...

  11. Radiation Protection Instrument Manual, Revision 1, PNL-MA-562

    SciTech Connect (OSTI)

    Johnson, Michelle Lynn

    2009-09-23

    PNL-MA-562 This manual provides specific information for operating and using portable radiological monitoring instruments available for use on the Hanford Site.

  12. MaRIE theory, modeling and computation roadmap executive summary...

    Office of Scientific and Technical Information (OSTI)

    discovery, with theory and high performance computing, itself co-designed by constrained optimization of hardware and software, and experiments. MaRIE's theory, modeling, and...

  13. MA 266 Lecture 35 7.9 Nonhomogeneous Linear Systems

    E-Print Network [OSTI]

    MA 266 Lecture 35. 7.9 Nonhomogeneous Linear Systems. In this section, we consider the nonhomogeneous system x' : Ax + g(t). The general solution can be

  14. SU-E-I-60: The Correct Selection of Pitch and Rotation Time for Optimal CT Scanning : The Big Misconception

    SciTech Connect (OSTI)

    Ranallo, F; Szczykutowicz, T

    2014-06-01

    Purpose: To provide correct guidance in the proper selection of pitch and rotation time for optimal CT imaging with multi-slice scanners. Methods: There exists a widespread misconception concerning the role of pitch in patient dose with modern multi-slice scanners, particularly with the use of mA modulation techniques. We investigated the relationship of pitch and rotation time to image quality, dose, and scan duration, with CT scanners from different manufacturers in a way that clarifies this misconception. This source of this misconception may concern the role of pitch in single slice CT scanners. Results: We found that the image noise and dose are generally independent of the selected effective mAs (mA*time/ pitch) with manual mA technique settings and are generally independent of the selected pitch and /or rotation time with automatic mA modulation techniques. However we did find that on certain scanners the use of a pitch just above 0.5 provided images of equal image noise at a lower dose compared to the use of a pitch just below 1.0. Conclusion: The misconception that the use of a lower pitch over-irradiates patients by wasting dose is clearly false. The use of a lower pitch provides images of equal or better image quality at the same patient dose, whether using manual mA or automatic mA modulation techniques. By decreasing the pitch and the rotation times by equal amounts, both helical and patient motion artifacts can be reduced without affecting the exam time. The use of lower helical pitch also allows better scanning of larger patients by allowing a greater scan effective mAs, if the exam time can be extended. The one caution with the use of low pitch is not related to patient dose, but to the length of the scan time if the rotation time is not set short enough. Partial Research funding from GE HealthCare.

  15. nh Gi Thit Hi Ti Nguyn Thin Nhin Do S C Trn Du Deepwater Horizon

    E-Print Network [OSTI]

    ln cc bi bin trng bng phng. Vt liu ny cng c th nm thnh di nh di hai dm theo ng mc thy triu v di mc thy triu thuc pha Vnh Fort Pickens, thnh thong khch thm cng hay bi li ch ny. Cc mnh nh nha

  16. Microsoft Word - figure_03.doc

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Oil and Gas Reserves"; PointLogic Energy; Ventyx; and the Bureau of Safety and Environmental Enforcement, and predecessor agencies. IN OH TN WV VA KY MD PA NY VT NH MA CT ME...

  17. Postgraduate Studentship MA in English Local History and Family History

    E-Print Network [OSTI]

    Banaji,. Murad

    Postgraduate Studentship MA in English Local History and Family History The Thaxted Society (www.thaxted.co.uk) would like to sponsor a student to undertake the MA degree in English Local History and Family History in the Centre for English Local History at the University of Leicester. The student will undertake the usual

  18. ACADEMIC PLAN TESOL-MA OLD CURRICULUM CODE_182_

    E-Print Network [OSTI]

    Qiu, Weigang

    ACADEMIC PLAN TESOL-MA OLD CURRICULUM CODE_182_ DEGREE CODE _24__ Hunter College of the City English to Speakers of Other Languages TESOL Adult Program (36 Credits) Last, DEGREE AUDIT DIVISION. Student's Signature Date ____________________ #12;ACADEMIC PLAN TESOL-MA OLD

  19. ACADEMIC PLAN ENGAE-MA OLD CURRICULUM CODE_188_

    E-Print Network [OSTI]

    Qiu, Weigang

    ACADEMIC PLAN ENGAE-MA OLD CURRICULUM CODE_188_ DEGREE CODE _24__ Hunter College of the City, DEGREE AUDIT DIVISION. Student's Signature Date ____________________ #12;ACADEMIC PLAN ENGAE-MA OLD and Safety 1 Fall Spring Summer SEDC 711 Advanced Study of Young Adult Literature in our Diverse Population

  20. School of Psychology On the Psychology MA students will

    E-Print Network [OSTI]

    Miall, Chris

    School of Psychology On the Psychology MA students will advance their understanding and informing and engaging the public in psychological research. Dr Fay Julal, Programme Leader One year full-time Two years part-time MA Psychology #12;11623CUniversityofBirmingham2015

  1. J. Michael Starling, M.A. Department of Educational Psychology

    E-Print Network [OSTI]

    Wu, Mingshen

    J. Michael Starling, M.A. Department of Educational Psychology Ball State University Muncie.D. Ball State University 2014 (Expected) Educational Psychology (General) Cognate: Research Methodology M.A. Ball State University 2009 School Psychology B.A. Anderson University 2008 Psychology Graduate

  2. Dual energy CT for attenuation correction with PET/CT

    SciTech Connect (OSTI)

    Xia, Ting; Alessio, Adam M.; Kinahan, Paul E.

    2014-01-15

    Purpose: The authors evaluate the energy dependent noise and bias properties of monoenergetic images synthesized from dual-energy CT (DECT) acquisitions. These monoenergetic images can be used to estimate attenuation coefficients at energies suitable for positron emission tomography (PET) and single-photon emission computed tomography (SPECT) imaging. This is becoming more relevant with the increased use of quantitative imaging by PET/CT and SPECT/CT scanners. There are, however, potential variations in the noise and bias of synthesized monoenergetic images as a function of energy. Methods: The authors used analytic approximations and simulations to estimate the noise and bias of synthesized monoenergetic images of water-filled cylinders with different shapes and the NURBS-based cardiac-torso (NCAT) phantom from 40 to 520 keV, the range of SPECT and PET energies. The dual-kVp spectra were based on the GE Lightspeed VCT scanner at 80 and 140 kVp with added filtration of 0.5 mm Cu. The authors evaluated strategies of noise suppression with sinogram smoothing and dose minimization with reduction of tube currents at the two kVp settings. The authors compared the impact of DECT-based attenuation correction with single-kVp CT-based attenuation correction on PET quantitation for the NCAT phantom for soft tissue and high-Z materials of bone and iodine contrast enhancement. Results: Both analytic calculations and simulations displayed the expected minimum noise value for a synthesized monoenergetic image at an energy between the mean energies of the two spectra. In addition the authors found that the normalized coefficient of variation in the synthesized attenuation map increased with energy but reached a plateau near 160 keV, and then remained constant with increasing energy up to 511 keV and beyond. The bias was minimal, as the linear attenuation coefficients of the synthesized monoenergetic images were within 2.4% of the known true values across the entire energy range. Compared with no sinogram smoothing, sinogram smoothing can dramatically reduce noise in the DECT-derived attenuation map. Through appropriate selection of tube currents for high and low kVp scans, DECT can deliver roughly the same amount of radiation dose as that of a single kVp CT scan, but could be used for PET attenuation correction with reduced bias in contrast agent regions by a factor of ?2.6 and slightly reduced RMSE for the total image. Conclusions: When DECT is used for attenuation correction at higher energies, there is a noise amplification that is dependent on the energy of the synthesized monoenergetic image of linear attenuation coefficients. Sinogram smoothing reduces the noise amplification in DECT-derived attenuation maps without increasing bias. With an appropriate selection of CT techniques, a DECT scan with the same radiation dose as a single CT scan can result in a PET image with improved quantitative accuracy.

  3. Simulation of an Ar/NH{sub 3} low pressure magnetized direct current discharge

    SciTech Connect (OSTI)

    Li Zhi [School of Science, University of Science and Technology Liaoning, Anshan 114051 (China); School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024 (China); Zhao Zhen [School of Chemistry and Life Science, Anshan Normal University, Anshan 114007 (China); School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051 (China); Li Xuehui [Physiccal Science and Technical College, Dalian University, Dalian 116622 (China)

    2013-01-15

    A two-dimensional fluid model has been used to investigate the properties of plasma in an Ar/NH{sub 3} low pressure magnetized direct current discharge. We compared the simulation results with the theoretical and experimental results of the other gas discharge in which the magnetic field is considered. Results that obtained using this method are in good agreement with literature. The simulation results show that the positive ammonia ion density follows the positive argon ion density. The Ar{sub 2}{sup +} density is slightly higher than the Ar{sup +} density at 100 mTorr. The largest ammonia ion is NH{sub 3}{sup +} ion, followed by NH{sub 2}{sup +}, NH{sub 4}{sup +}, and NH{sup +} ions. The contribution of NH{sup +} ions to the density of the positive ammonia ions is marginal. The influence of pressure on the plasma discharge has been studied by simulation, and the mechanisms have been discussed. The average plasma density increases as pressure increased. The plasma density appears to be more inhomogeneous than that at the lower pressure. The ratio of charge particles changed as pressure increased. The Ar{sup +} density is slightly higher than the Ar{sub 2}{sup +} density as the pressure increased. It makes NH{sub 4}{sup +} ratio increase as pressure increased. It shows that the electron temperature drops with rising pressure by numerical calculation.

  4. Global distributions, time series and error characterization of atmospheric ammonia (NH[subscript 3]) from IASI satellite observations

    E-Print Network [OSTI]

    Van Damme, M.

    Ammonia (NH[subscript 3]) emissions in the atmosphere have increased substantially over the past decades, largely because of intensive livestock production and use of fertilizers. As a short-lived species, NH[subscript 3] ...

  5. Deep-Ultraviolet Resonance Raman Excitation Profiles of NH4NO3, PETN, TNT, HMX, and RDX

    E-Print Network [OSTI]

    Asher, Sanford A.

    Deep-Ultraviolet Resonance Raman Excitation Profiles of NH4NO3, PETN, TNT, HMX, and RDX Manash nitrate (NH4NO3), pentaerythritol tetranitrate (PETN), trinitrotoluene (TNT), nitroamine (HMX. The ultraviolet (UV) resonance Raman/differential Raman cross-sections of NH4NO3, PETN, TNT, HMX, and RDX

  6. CHARACTERIZATION STUDIES OF THE SELECTIVE REDUCTION OF NO by NH3

    E-Print Network [OSTI]

    Brown, N.J.

    2013-01-01

    and Maloney, K.L. , "NOx Reduction with Ammonia: Laboratoryand Hashizawa, K. , "Reduction of NOx in Combustion ExhaustSelective Noncatalytic Reduction of NOx with NH3," EPRI NOx

  7. NH3 generation over commercial Three-Way Catalysts and Lean-NOx...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    generation over commercial Three-Way Catalysts and Lean-NOx Traps NH3 generation over commercial Three-Way Catalysts and Lean-NOx Traps Research to identify most promising...

  8. NH3 generation over commercial Three-Way Catalysts and Lean-NOx Traps

    Broader source: Energy.gov [DOE]

    Research to identify most promising catalytic formulations and operation for the in-situ generation of NH3, storage on a downstream SCR catalyst, and utilized to reduce the remaining NOx

  9. MO-PIS-Exhibit Hall-01: Imaging: CT Dose Optimization Technologies I

    SciTech Connect (OSTI)

    Denison, K; Smith, S

    2014-06-15

    Partners in Solutions is an exciting new program in which AAPM partners with our vendors to present practical hands-on information about the equipment and software systems that we use in our clinics. The imaging topic this year is CT scanner dose optimization capabilities. Note that the sessions are being held in a special purpose room built on the Exhibit Hall Floor, to encourage further interaction with the vendors. Dose Optimization Capabilities of GE Computed Tomography Scanners Presentation Time: 11:15 11:45 AM GE Healthcare is dedicated to the delivery of high quality clinical images through the development of technologies, which optimize the application of ionizing radiation. In computed tomography, dose management solutions fall into four categories: employs projection data and statistical modeling to decrease noise in the reconstructed image - creating an opportunity for mA reduction in the acquisition of diagnostic images. Veo represents true Model Based Iterative Reconstruction (MBiR). Using high-level algorithms in tandem with advanced computing power, Veo enables lower pixel noise standard deviation and improved spatial resolution within a single image. Advanced Adaptive Image Filters allow for maintenance of spatial resolution while reducing image noise. Examples of adaptive image space filters include Neuro 3-D filters and Cardiac Noise Reduction Filters. AutomA adjusts mA along the z-axis and is the CT equivalent of auto exposure control in conventional x-ray systems. Dynamic Z-axis Tracking offers an additional opportunity for dose reduction in helical acquisitions while SmartTrack Z-axis Tracking serves to ensure beam, collimator and detector alignment during tube rotation. SmartmA provides angular mA modulation. ECG Helical Modulation reduces mA during the systolic phase of the heart cycle. SmartBeam optimization uses bowtie beam-shaping hardware and software to filter off-axis x-rays - minimizing dose and reducing x-ray scatter. The DICOM Radiation Dose Structured Report (RDSR) generates a dose report at the conclusion of every examination. Dose Check preemptively notifies CT operators when scan parameters exceed user-defined dose thresholds. DoseWatch is an information technology application providing vendor-agnostic dose tracking and analysis for CT (and all other diagnostic x-ray modalities) SnapShot Pulse improves coronary CTA dose management. VolumeShuttle uses two acquisitions to increase coverage, decrease dose, and conserve on contrast administration. Color-Coding for Kids applies the Broselow-Luten Pediatric System to facilitate pediatric emergency care and reduce medical errors. FeatherLight achieves dose optimization through pediatric procedure-based protocols. Adventure Series scanners provide a child-friendly imaging environment promoting patient cooperation with resultant reduction in retakes and patient motion. Philips CT Dose Optimization Tools and Advanced Reconstruction Presentation Time: 11:45 12:15 PM The first part of the talk will cover Dose Reduction and Dose Optimization Technologies present in Philips CT Scanners. The main Technologies to be presented include: DoseRight and tube current modulation (DoseRight, Z-DOM, 3D-DOM, DoseRight Cardiac) Special acquisition modes Beam filtration and beam shapers Eclipse collimator and ClearRay collimator NanoPanel detector DoseRight will cover automatic tube current selection that automatically adjusts the dose for the individual patient. The presentation will explore the modulation techniques currently employed in Philips CT scanners and will include the algorithmic concepts as well as illustrative examples. Modulation and current selection technologies to be covered include the Automatic Current Selection component of DoseRight, ZDOM longitudinal dose modulation, 3D-DOM (combination of longitudinal and rotational dose modulation), Cardiac Dose right (an ECG based dose modulation scheme), and the DoseRight Index (DRI) IQ index. The special acquisition modes covers acquisition techniques such as prospective gating that

  10. STUDY GUIDE FOR MA 265 LINEAR ALGEBRA This study guide ...

    E-Print Network [OSTI]

    2001-05-09

    This study guide describes briefly the course materials to be covered in MA 265. In order to be qualified for the credit, one is expected not only to know these.

  11. Study Guide for Applied Calculus II And Differential Equations, MA ...

    E-Print Network [OSTI]

    2014-08-12

    The current text used for MA16021 as well as the course web page are listed below (A .... A vertical rectangular floodgate on a dam is 5 ft long and 4 ft deep.

  12. Journalism Concentration: Grady College MA Thesis Program Planning Form

    E-Print Network [OSTI]

    Arnold, Jonathan

    Journalism Concentration: Grady College MA Thesis Program Planning Form Student and Directed Readings in Mass Communication JRMC 8350 ( ) Special Topics in Journalism JRMC 8025 ( ) Mass Media Law JRMC 8365 ( ) Media Economics JRMC 7355 ( ) Health and Medical Journalism JRMC 7356 ( ) Advanced

  13. ANSWERS TO MA 130 FINAL EXAM REVIEW PROBLEMS

    E-Print Network [OSTI]

    Lisa Breidenbach

    2007-04-19

    ANSWERS TO MA 138 FINAL EXAM REVIEW PROBLEMS. 1. a. P(OIL) = 1 ... Only if ALL costs rise 25% is the landlord justified in raising rent by that amount.

  14. Opportunities and challenges of M&A in India

    E-Print Network [OSTI]

    Gupta, Nikhil, S.M. Massachusetts Institute of Technology

    2014-01-01

    The Indian economy has witnessed a major transformation since the government of India introduced the liberalization policies in 1991 .Since then M&A activity in India has picked up pace as foreign companies began to enter ...

  15. Rare Earth ? N = N* fs fGHZ fp nH fl

    E-Print Network [OSTI]

    Walter, Frederick M.

    Rare Earth ? #12;N to date N = N* fs fGHZ fp nH fl N* = 4 x 1011 fs = 0.2 fGHZ = 0.1 fp = 0.8 nH = 2 fl = 1.0 N = 1.3 x 1010 #12;The Goldilocks Effect Earth is "Just Right" Yes, life on Earth has adapted to Earth, but ... Earth has just the right mass to be Tectonically-active Retain

  16. Volume 130, number 6 CHEMICAL PHYSICS LETTERS 24 October1986 VIBRATIONAL DEPENDENCE OF THE NH,+ (v2)+NO AND NO+(v) +NH,

    E-Print Network [OSTI]

    bending mode ( vz=O-12) causes no marked change in the charge transfer cross section, while in the reverse vibrational levels. We find that the vibrational excitation of the NH: v2 umbrella bending mode (v, = O-12 with the hope of con- firming or refuting this model. 2. Experimental In a previous paper we reported

  17. Tunable far infrared laser spectroscopy of van der Waals bonds: Ar-NH sub 3

    SciTech Connect (OSTI)

    Gwo, Dz-Hung (Lawrence Berkeley Lab., CA (USA) California Univ., Berkeley, CA (USA). Dept. of Chemistry)

    1989-11-01

    Hyperfine resolved vibration-rotation-tunneling spectra of Ar--NH{sub 3} and (NH{sub 3}){sub 2}, generated in a planar supersonic jet, have been measured with the Berkeley tunable far infrared laser spectrometer. Among the seven rotationally assigned bands, one band belongs to Ar--NH{sub 3}, and the other six belong to (NH{sub 3}){sub 2}. To facilitate the intermolecular vibrational assignment for Ar--NH{sub 3}, a dynamics study aided by a permutation-inversion group theoretical treatment is performed on the rovibrational levels. The rovibrational quantum number correlation between the free internal rotor limit and the semi-rigid limit is established to provide a basic physical picture of the evolution of intermolecular vibrational component states. An anomalous vibronically allowed unique Q branch vibrational band structure is predicted to exist for a near prolate binary complex containing an inverting subunit. According to the model developed in this work, the observed band of Ar--NH{sub 3} centered at 26.470633(17) cm{sup {minus}1} can correlate only to either the fundamental dimeric stretching band for the A{sub 2} states with the NH{sub 3} inversional quantum number v{sub i} = 1, or the K{sub a} = 0 {l arrow} 0 subband of the lowest internal-rotation-inversion difference band. Although the estimated nuclear quadrupole coupling constant favors a tentative assignment in terms of the first possibility, a definitive assignment will require far infrared data and a dynamical model incorporating a potential surface.

  18. Numerical analysis of a mixture of Ar/NH{sub 3} microwave plasma chemical vapor deposition reactor

    SciTech Connect (OSTI)

    Li Zhi [School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024 (China); School of Science, University of Science and Technology Liaoning, Anshan 114051 (China); Zhao Zhen [Chemistry Department, Anshan Normal University, Anshan 114007 (China); School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051 (China); Li Xuehui [School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024 (China); Physical Science and Technical College, Dalian University, Dalian 116622 (China)

    2012-06-01

    A two-dimensional fluid model has been used to investigate the properties of plasma in Ar/NH{sub 3} microwave electron cyclotron resonance discharge at low pressure. The electromagnetic field model solved by the three-dimensional Simpson method is coupled to a fluid plasma model. The finite difference method was employed to discrete the governing equations. 40 species (neutrals, radicals, ions, and electrons) are consisted in the model. In total, 75 electron-neutral, 43 electron-ion, 167 neutral-neutral, 129 ion-neutral, 28 ion-ion, and 90 3-body reactions are used in the model. According to the simulation, the distribution of the densities of the considered plasma species has been showed and the mechanisms of their variations have been discussed. It is found that the main neutrals (Ar*, Ar**, NH{sub 3}{sup *}, NH, H{sub 2}, NH{sub 2}, H, and N{sub 2}) are present at high densities in Ar/NH{sub 3} microwave electron cyclotron resonance discharge when the mixing ratio of Ar/NH{sub 3} is 1:1 at 20 Pa. The density of NH is more than that of NH{sub 2} atom. And NH{sub 3}{sup +} are the most important ammonia ions. But the uniformity of the space distribution of NH{sub 3}{sup +} is lower than the other ammonia ions.

  19. Thermal Durability of Cu-CHA NH3-SCR Catalysts for Diesel NOx Reduction

    SciTech Connect (OSTI)

    Schmieg, Steven J.; Oh, Se H.; Kim, Chang H.; Brown, David B.; Lee, Jong H.; Peden, Charles HF; Kim, Do Heui

    2012-04-30

    Multiple catalytic functions (NOx conversion, NO and NH3 oxidation, NH3 storage) of a commercial Cu-zeolite urea/NH3-SCR catalyst were assessed in a laboratory fixed-bed flow reactor system after differing degrees of hydrothermal aging. Catalysts were characterized by using x-ray diffraction (XRD), 27Al solid state nuclear magnetic resonance (NMR) and transmission electron microscopy (TEM) / energy dispersive X-ray (EDX) spectroscopy to develop an understanding of the degradation mechanisms during catalyst aging. The catalytic reaction measurements of laboratory-aged catalysts were performed, which allows us to obtain a universal curve for predicting the degree of catalyst performance deterioration as a function of time at each aging temperature. Results show that as the aging temperature becomes higher, the zeolite structure collapses in a shorter period of time after an induction period. The decrease in SCR performance was explained by zeolite structure destruction and/or Cu agglomeration, as detected by XRD/27Al NMR and by TEM/EDX, respectively. Destruction of the zeolite structure and agglomeration of the active phase also results in a decrease in the NO/NH3 oxidation activity and the NH3 storage capacity of the catalyst. Selected laboratory aging conditions (16 h at 800oC) compare well with a 135,000 mile vehicle-aged catalyst for both performance and characterization criteria.

  20. A Review & Assessment of Current Operating Conditions Allowable Stresses in ASME Section III Subsection NH

    SciTech Connect (OSTI)

    R. W. Swindeman

    2009-12-14

    The current operating condition allowable stresses provided in ASME Section III, Subsection NH were reviewed for consistency with the criteria used to establish the stress allowables and with the allowable stresses provided in ASME Section II, Part D. It was found that the S{sub o} values in ASME III-NH were consistent with the S values in ASME IID for the five materials of interest. However, it was found that 0.80 S{sub r} was less than S{sub o} for some temperatures for four of the materials. Only values for alloy 800H appeared to be consistent with the criteria on which S{sub o} values are established. With the intent of undertaking a more detailed evaluation of issues related to the allowable stresses in ASME III-NH, the availabilities of databases for the five materials were reviewed and augmented databases were assembled.

  1. John R. Harrison, Ph.D. 1978 B.A. Salem State College, Salem, MA Biology

    E-Print Network [OSTI]

    Oliver, Douglas L.

    .D. The University of Connecticut, Storrs, CT Physiology Academic Appointments 1980-84 Graduate Teaching Assistant, University of Connecticut, Storrs, CT 1980-86 Doctoral Student, University of Connecticut, Storrs, CT 1986-90 Postdoctoral Fellow, University of Connecticut Health Center, Farmington, CT 1990-99 Assistant Professor

  2. Formation of NH{sub 3} during the pyrolysis of a brown coal

    SciTech Connect (OSTI)

    Li, C.Z.; Pang, Y.; Li, X.G. [Monash Univ., Clayton, Victoria (Australia). Dept. of Chemical Engineering

    1998-12-31

    Emissions of oxides of nitrogen (NO, NO{sub 2} and N{sub 2}O) from power generation using coal are an important environmental problem, contributing to the formation of photochemical smog and acid rain or to the enhancement of greenhouse effects and to the enhanced depletion of stratospheric ozone. During pyrolysis, the nitrogen in coal, as a part of coal organic matter, is converted into NOx precursors (eg. NH{sub 3}, HCN, HNCO and the nitrogen in tar and char). These NOx precursors may then be converted into either NOx or N{sub 2} during subsequent combustion or gasification/combustion. The conversion efficiency of these NOx precursors into NOx depends strongly upon the type of NOx precursor. Knowledge of the formation of these NOx precursors during pyrolysis is therefore essential for the accurate predictions of NOx emissions from large scale power plants, and therefore for the development of optimum strategies for NOx reduction. Formation of NH{sub 3} during the pyrolysis of a Victorian brown coal (Loy Yang) has been studied in a novel reactor. The experimental results obtained suggest that a considerable amount of the nitrogen in the nascent char could be converted into NH{sub 3} if the char is held at high temperatures for a long period of time. The formation of NH{sub 3} from the thermal cracking of char was seen to last for more than an hour even at temperatures as high as 700--900 C. The experimental results seem to suggest that the differences in reactor geometries would account at least partially for some of the discrepancies in the literature regarding the formation of NH{sub 3} during the pyrolysis of coals. It is thought that NH{sub 3} may be formed from the hydrogenation of the N sites in the char by the active hydrogen generated from the thermal cracking of the char.

  3. MA Thesis Degree Program Checklist By End of Second Term

    E-Print Network [OSTI]

    Arnold, Jonathan

    MA Thesis Degree Program Checklist By End of Second Term ( ) Select major professor and other two Advisory Committee members. ( ) Submit Program of Study. ( ) Submit thesis proposal to Advisory Committee for approval. ( ) Submit copy of approved thesis proposal to Grady Graduate Studies Office. ( ) Pick up thesis

  4. Worksheet for the MA in Statistics Thesis Option

    E-Print Network [OSTI]

    McAuliffe, Jon

    Worksheet for the MA in Statistics Thesis Option Name: (Last, first, middle) SID #: E-mail: Local Courses When taking the thesis option, a total of 20 units is need to complete the degree, of which: _____________________________________________________________________________________________ Department Course # Course Title Units Semester Grade Thesis Proposed Thesis Title

  5. THE MIT PRESS 55 Hayward Street, Cambridge, MA 02142

    E-Print Network [OSTI]

    Jackson, Daniel

    THE MIT PRESS 55 Hayward Street, Cambridge, MA 02142 Sales Director: phone: 617-253-8838/ Fax: 617-253-1709 STP AGENCY PLAN Retail bookshops who regularly stock The MIT Press Scholarly, Technical order sufficient to achieve the 10-title minimum stock level must be sent to the Press or, alternatively

  6. ON SOLAR NEUTRINO PROBLEM TIAN MA AND SHOUHONG WANG

    E-Print Network [OSTI]

    ON SOLAR NEUTRINO PROBLEM TIAN MA AND SHOUHONG WANG Abstract. The current neutrino oscillation an alternative resolution to the solar neutrino loss problem. Contents 1. Introduction 1 2. Discrepancy of Solar, there are three flavors of neutrinos: the electron neutrino e, the tau neutrino and the mu neutrino . The solar

  7. Harvard Ed Portal 224 Western Ave., Allston, MA 02134

    E-Print Network [OSTI]

    Chou, James

    Harvard Ed Portal 224 Western Ave., Allston, MA 02134 Parking Map and Driving Directions From Harvard Square/Cambridge: The Ed Portal is located past Harvard Stadium. Continue to the stoplight at the intersection of North Harvard St. and Western Ave., and take a right on Western Ave. The Ed Portal is located

  8. MA50177: Scientific Computing Nuclear Reactor Simulation Generalised Eigenvalue Problems

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    MA50177: Scientific Computing Case Study Nuclear Reactor Simulation ­ Generalised Eigenvalue of a malfunction or of an accident experimentally, the numerical simulation of nuclear reactors is of utmost balance in a nuclear reactor are the two-group neutron diffusion equations -div (K1 u1) + (a,1 + s) u1 = 1

  9. Predictive usage mining for life cycle assessment Jungmok Ma a

    E-Print Network [OSTI]

    Kim, Harrison

    Predictive usage mining for life cycle assessment Jungmok Ma a , Harrison M. Kim b, a Department e i n f o Article history: Keywords: Life cycle assessment Usage modeling Time series segmentation Time series analysis a b s t r a c t The usage modeling in life cycle assessment (LCA) is rarely

  10. Lena Qiying Ma Page 1 Total publications 177

    E-Print Network [OSTI]

    Balser, Teri C.

    Society of America (2002) Chair, Soil Science Applied Research Award Committee, Soil Science Society of America (2000-2001) Board of director, Soil Crop Sci. Soc. Florida Award Committee (2003-2006) Summary) 1. Ma, L.Q. J.C. Bonzongo and B. Gao. Environmental impacts of coal combustion residues in Florida

  11. Glass, Brian 1 BRIAN DANIEL GLASS, M.A.

    E-Print Network [OSTI]

    Maddox, W. Todd

    Glass, Brian 1 BRIAN DANIEL GLASS, M.A. University Department of Psychology, A8000 The University of Texas at Austin Austin, TX 78712 (512) 232-2883 e-mail: glass@mail.utexas.edu EDUCATION 2006 Cognitive include: Designing and constructing experiments, statistical #12;Glass, Brian 2 analysis, manuscript

  12. Glass, Brian 1 BRIAN DANIEL GLASS, M.A.

    E-Print Network [OSTI]

    Maddox, W. Todd

    Glass, Brian 1 BRIAN DANIEL GLASS, M.A. University Department of Psychology, A8000 The University Making, The University of Texas at Austin #12;Glass, Brian 2 Duties include: Designing and constructing, constructing, and running experiments, statistical analysis. JOURNAL PUBLICATIONS Glass, B. D., Chotibut, T

  13. Glass, Brian 1 BRIAN DANIEL GLASS, M.A.

    E-Print Network [OSTI]

    Maddox, W. Todd

    Glass, Brian 1 BRIAN DANIEL GLASS, M.A. University Department of Psychology, A8000 The University of Categorization and Decision Making, The University of Texas at Austin #12;Glass, Brian 2 Duties include: Programming, constructing, and running experiments, statistical analysis. JOURNAL PUBLICATIONS Glass, B. D

  14. Engineering Ethics Richard A. Burgess, M.A.

    E-Print Network [OSTI]

    Gelfond, Michael

    Engineering Ethics Richard A. Burgess, M.A. Texas Tech T-STEM Center and Deputy Director, National Institute for Engineering Ethics Summer 2012 #12;STEM includes Engineering No single profession impacts modern life as thoroughly as engineering does. (examples: cars, buildings, electronic devices, water

  15. Component geochronology in the polyphase ca. 3920 Ma Acasta Gneiss

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    Component geochronology in the polyphase ca. 3920 Ma Acasta Gneiss Stephen J. Mojzsis a, we combined new ion microprobe 235,238 U207,206 Pb zircon geochronology with whole-rock and zircon geochronology for an individual subdivided $60 cm2 slab of Acasta banded gneiss comprising five separate

  16. NH13A: No-source tsunami forecasting for Alaska communities

    E-Print Network [OSTI]

    Tolkova, Elena

    NH13A: No-source tsunami forecasting for Alaska communities Dmitry Nicolsky (UAF) djnicolsky://nctr.pmel.noaa.gov/ Wave trains to Alaska: direction structure (time history) tsunami source R E S P and accurate regional tsunami forecasts A deep-ocean detector and a coastal site can be connected

  17. Respiratory correlated cone beam CT

    SciTech Connect (OSTI)

    Sonke, Jan-Jakob; Zijp, Lambert; Remeijer, Peter; Herk, Marcel van [Department of Radiation Oncology, Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam (Netherlands)

    2005-04-01

    A cone beam computed tomography (CBCT) scanner integrated with a linear accelerator is a powerful tool for image guided radiotherapy. Respiratory motion, however, induces artifacts in CBCT, while the respiratory correlated procedures, developed to reduce motion artifacts in axial and helical CT are not suitable for such CBCT scanners. We have developed an alternative respiratory correlated procedure for CBCT and evaluated its performance. This respiratory correlated CBCT procedure consists of retrospective sorting in projection space, yielding subsets of projections that each corresponds to a certain breathing phase. Subsequently, these subsets are reconstructed into a four-dimensional (4D) CBCT dataset. The breathing signal, required for respiratory correlation, was directly extracted from the 2D projection data, removing the need for an additional respiratory monitor system. Due to the reduced number of projections per phase, the contrast-to-noise ratio in a 4D scan reduced by a factor 2.6-3.7 compared to a 3D scan based on all projections. Projection data of a spherical phantom moving with a 3 and 5 s period with and without simulated breathing irregularities were acquired and reconstructed into 3D and 4D CBCT datasets. The positional deviations of the phantoms center of gravity between 4D CBCT and fluoroscopy were small: 0.13{+-}0.09 mm for the regular motion and 0.39{+-}0.24 mm for the irregular motion. Motion artifacts, clearly present in the 3D CBCT datasets, were substantially reduced in the 4D datasets, even in the presence of breathing irregularities, such that the shape of the moving structures could be identified more accurately. Moreover, the 4D CBCT dataset provided information on the 3D trajectory of the moving structures, absent in the 3D data. Considerable breathing irregularities, however, substantially reduces the image quality. Data presented for three different lung cancer patients were in line with the results obtained from the phantom study. In conclusion, we have successfully implemented a respiratory correlated CBCT procedure yielding a 4D dataset. With respiratory correlated CBCT on a linear accelerator, the mean position, trajectory, and shape of a moving tumor can be verified just prior to treatment. Such verification reduces respiration induced geometrical uncertainties, enabling safe delivery of 4D radiotherapy such as gated radiotherapy with small margins.

  18. Experimental Physical Sciences Vistas: MaRIE (draft)

    SciTech Connect (OSTI)

    Shlachter, Jack [Los Alamos National Laboratory

    2010-09-08

    To achieve breakthrough scientific discoveries in the 21st century, a convergence and integration of world-leading experimental facilities and capabilities with theory, modeling, and simulation is necessary. In this issue of Experimental Physical Sciences Vistas, I am excited to present our plans for Los Alamos National Laboratory's future flagship experimental facility, MaRIE (Matter-Radiation Interactions in Extremes). MaRIE is a facility that will provide transformational understanding of matter in extreme conditions required to reduce or resolve key weapons performance uncertainties, develop the materials needed for advanced energy systems, and transform our ability to create materials by design. Our unique role in materials science starting with the Manhattan Project has positioned us well to develop a contemporary materials strategy pushing the frontiers of controlled functionality - the design and tailoring of a material for the unique demands of a specific application. Controlled functionality requires improvement in understanding of the structure and properties of materials in order to synthesize and process materials with unique characteristics. In the nuclear weapons program today, improving data and models to increase confidence in the stockpile can take years from concept to new knowledge. Our goal with MaRIE is to accelerate this process by enhancing predictive capability - the ability to compute a priori the observables of an experiment or test and pertinent confidence intervals using verified and validated simulation tools. It is a science-based approach that includes the use of advanced experimental tools, theoretical models, and multi-physics codes, simultaneously dealing with multiple aspects of physical operation of a system that are needed to develop an increasingly mature predictive capability. This same approach is needed to accelerate improvements to other systems such as nuclear reactors. MaRIE will be valuable to many national security science challenges. Our first issue of Vistas focused on our current national user facilities (the Los Alamos Neutron Science Center [LANSCE], the National High Magnetic Field Laboratory-Pulsed Field Facility, and the Center for Integrated Nanotechnologies) and the vitality they bring to our Laboratory. These facilities are a magnet for students, postdoctoral researchers, and staff members from all over the world. This, in turn, allows us to continue to develop and maintain our strong staff across the relevant disciplines and conduct world-class discovery science. The second issue of Vistas was devoted entirely to the Laboratory's materials strategy - one of the three strategic science thrusts for the Laboratory. This strategy has helped focus our thinking for MaRIE. We believe there is a bright future in cutting-edge experimental materials research, and that a 21st-century facility with unique capability is necessary to fulfill this goal. The Laboratory has spent the last several years defining MaRIE, and this issue of Vistas presents our current vision of that facility. MaRIE will leverage LANSCE and our other user facilities, as well as our internal and external materials community for decades to come, giving Los Alamos a unique competitive advantage, advancing materials science for the Laboratory's missions and attracting and recruiting scientists of international stature. MaRIE will give the international materials research community a suite of tools capable of meeting a broad range of outstanding grand challenges.

  19. MaRIE 1.0: The Matter-Radiation Interactions in Extremes Project...

    Office of Scientific and Technical Information (OSTI)

    Conference: MaRIE 1.0: The Matter-Radiation Interactions in Extremes Project, and the Challenge of Dynamic Mesoscale Imaging Citation Details In-Document Search Title: MaRIE 1.0:...

  20. MaGKeyS : a haptic guidance keyboard system for facilitating sensorimotor training and rehabilitation

    E-Print Network [OSTI]

    Lewiston, Craig Edwin

    2009-01-01

    The Magnetic Guidance Keyboard System (MaGKeyS) embodies a new haptic guidance technology designed to facilitate sensorimotor training and rehabilitation. MaGKeyS works by employing active magnetic force to guide finger ...

  1. A low dose simulation tool for CT systems with energy integrating detectors

    SciTech Connect (OSTI)

    Zabic, Stanislav; Morton, Thomas; Brown, Kevin M.; Wang Qiu

    2013-03-15

    Purpose: This paper introduces a new strategy for simulating low-dose computed tomography (CT) scans using real scans of a higher dose as an input. The tool is verified against simulations and real scans and compared to other approaches found in the literature. Methods: The conditional variance identity is used to properly account for the variance of the input high-dose data, and a formula is derived for generating a new Poisson noise realization which has the same mean and variance as the true low-dose data. The authors also derive a formula for the inclusion of real samples of detector noise, properly scaled according to the level of the simulated x-ray signals. Results: The proposed method is shown to match real scans in number of experiments. Noise standard deviation measurements in simulated low-dose reconstructions of a 35 cm water phantom match real scans in a range from 500 to 10 mA with less than 5% error. Mean and variance of individual detector channels are shown to match closely across the detector array. Finally, the visual appearance of noise and streak artifacts is shown to match in real scans even under conditions of photon-starvation (with tube currents as low as 10 and 80 mA). Additionally, the proposed method is shown to be more accurate than previous approaches (1) in achieving the correct mean and variance in reconstructed images from pure-Poisson noise simulations (with no detector noise) under photon-starvation conditions, and (2) in simulating the correct noise level and detector noise artifacts in real low-dose scans. Conclusions: The proposed method can accurately simulate low-dose CT data starting from high-dose data, including effects from photon starvation and detector noise. This is potentially a very useful tool in helping to determine minimum dose requirements for a wide range of clinical protocols and advanced reconstruction algorithms.

  2. GM Media-Sept 21, 2007 PBS, NH4Cl and KCl

    E-Print Network [OSTI]

    GM Media- Sept 21, 2007 PBS, NH4Cl and KCl Final volume(L) 1 50 mM PBS 100 mM 200 mM Ingredient keep the PBS solution at room temperature. GM Media Preparation: For each litter of GM media add, mineral, and PBS solution if you are not going to use them inside MFC. Combine them prior to make GM media

  3. 263 Farmington Avenue, Farmington, CT 06030 Confidential Health Information Enclosed

    E-Print Network [OSTI]

    Oliver, Douglas L.

    263 Farmington Avenue, Farmington, CT 06030 Confidential Health Information Enclosed Sender Information: Date: ________________________________ Time: ________________________ From: ________________________ Recipient Information: To: ________________________________ Phone: ________________________ Organization

  4. PET/CT shielding design comparisons

    E-Print Network [OSTI]

    Coker, Audra Lee

    2007-09-17

    used to calculate unattenuated radiation through existing lead walls. The computer code MCNPX was used to simulate the leaded walls of the PET/CT suite and provide another set of results. These two sets of results were compared to doses gathered from...

  5. [(CH3)4N][(C5H5NH)0.8((CH3)3NH)0.2]U2Si9O23F4 (USH-8): An Organically Templated Open-Framework Uranium Silicate

    E-Print Network [OSTI]

    Wang, Xiqu

    -Framework Uranium Silicate Xiqu Wang, Jin Huang, and Allan J. Jacobson* Department of Chemistry, Uni pyramids we obtained also a number of open-framework uranium silicates.18,19 These new compounds were-framework uranium fluorosilicate [(CH3)4N][(C5H5NH)0.8((CH3)3NH)0.2]U2Si9O23F4 (USH- 8) that has been synthesized

  6. DOE - Office of Legacy Management -- Tracerlab Inc - MA 11

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co - OHStarTracerlab Inc - MA 11 FUSRAP

  7. FuMA Tech GmbH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:ofEnia SpAFlex FuelsEnergyInc| OpenFuMA Tech GmbH Jump to:

  8. SE-MA-NO Electric Coop | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,EnergyEastCarbon Development | OpenGmbH JumpSBASE-MA-NO

  9. Town of Danvers, MA Smart Grid Project | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc JumpHeterInformation PolicyTinnaBraman, OklahomaTown of Crane,Danvers, MA

  10. Johnston LFG (MA RPS Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam:onItron (California) JumpJeffersonJessi3bl'sDeControlsLFG (MA

  11. MaRIE: An experimental facility concept revolutionizing materials in

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle)SciTech Connect Conference: MaRIE: A

  12. MaRIE: An experimental facility concept revolutionizing materials in

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle)SciTech Connect Conference: MaRIE: Aextremes

  13. El Ma Electronic Machining srl | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'SHeavy Electricals LtdEcowind Jump to: navigation, searchEfunEkaratMa

  14. Implications of CT noise and artifacts for quantitative {sup 99m}Tc SPECT/CT imaging

    SciTech Connect (OSTI)

    Hulme, K. W.; Kappadath, S. C.

    2014-04-15

    Purpose: This paper evaluates the effects of computed tomography (CT) image noise and artifacts on quantitative single-photon emission computed-tomography (SPECT) imaging, with the aim of establishing an appropriate range of CT acquisition parameters for low-dose protocols with respect to accurate SPECT attenuation correction (AC). Methods: SPECT images of two geometric and one anthropomorphic phantom were reconstructed iteratively using CT scans acquired at a range of dose levels (CTDI{sub vol} = 0.4 to 46 mGy). Resultant SPECT image quality was evaluated by comparing mean signal, background noise, and artifacts to SPECT images reconstructed using the highest dose CT for AC. Noise injection was performed on linear-attenuation (?) maps to determine the CT noise threshold for accurate AC. Results: High levels of CT noise (? ? 200400 HU) resulted in low ?-maps noise (? ? 1%3%). Noise levels greater than ?10% in 140 keV ?-maps were required to produce visibly perceptible increases of ?15% in {sup 99m}Tc SPECT images. These noise levels would be achieved at low CT dose levels (CTDI{sub vol} = 4 ?Gy) that are over 2 orders of magnitude lower than the minimum dose for diagnostic CT scanners. CT noise could also lower (bias) the expected ? values. The relative error in reconstructed SPECT signal trended linearly with the relative shift in ?. SPECT signal was, on average, underestimated in regions corresponding with beam-hardening artifacts in CT images. Any process that has the potential to change the CT number of a region by ?100 HU (e.g., misregistration between CT images and SPECT images due to motion, the presence of contrast in CT images) could introduce errors in ?{sub 140} {sub keV} on the order of 10%, that in turn, could introduce errors on the order of ?10% into the reconstructed {sup 99m}Tc SPECT image. Conclusions: The impact of CT noise on SPECT noise was demonstrated to be negligible for clinically achievable CT parameters. Because CT dose levels that affect SPECT quantification is low (CTDI{sub vol} ? 4 ?Gy), the low dose limit for the CT exam as part of SPECT/CT will be guided by CT image quality requirements for anatomical localization and artifact reduction. A CT technique with higher kVp in combination with lower mAs is recommended when low-dose CT images are used for AC to minimize beam-hardening artifacts.

  15. Measurement and Modeling of Spatial NH3 Storage Distributions in a Commercial Small Port Cu Zeolite Urea SCR Catalyst

    Broader source: Energy.gov [DOE]

    A modified Spaci-IR technique can measure transient NH3 and NOx concentrations; data have been used to calibrate and validate an SCR model, with good agreement between experiments and simulations.

  16. SPECTROSCOPIC INVESTIGATION OF (NH4)2S TREATED GaSeTe FOR RADIATION DETECTOR APPLICATIONS

    SciTech Connect (OSTI)

    Nelson, A; Laurence, T; Conway, A; Behymer, E; Sturm, B; Voss, L; Nikolic, R; Payne, S; Mertiri, A; Pabst, G; Mandal, K; Burger, A

    2009-08-04

    The surface of the layered III-VI chalcogenide semiconductor GaSeTe was treated with (NH{sub 4}){sub 2}S at 60 C to modify the surface chemistry and determine the effect on transport properties. Room temperature photoluminescence (PL) measurements were used to assess the effect of the (NH{sub 4}){sub 2}S treatment on surface defect states. Evaluation of the subsequent surface chemistry was performed with high-resolution core-level photoemission measurements. Metal overlayers were deposited on the (NH{sub 4}){sub 2}S treated surfaces and the I-V characteristics were measured. The measurements were correlated to understand the effect of (NH{sub 4}){sub 2}S modification of the interfacial electronic structure with the goal of optimizing the metal/GaSeTe interface for radiation detector devices.

  17. Science and Technology of the 10-MA Spherical Tori

    SciTech Connect (OSTI)

    Peng, Y-K.M.

    1999-11-14

    The Spherical Torus (ST) configuration has recently emerged as an example of confinement concept innovation that enables attractive steps in the development of fusion energy. The scientific potential for the ST has been indicated by recent encouraging results from START,2 CDX-U, and HIT. The scientific principles for the D-fueled ST will soon be tested by NSTX (National Spherical Torus Experiment3) in the U.S. and MAST (Mega-Amp Spherical Tokamak4) in the U.K. at the level of l-2 MA in plasma current. More recently, interest has grown in the U.S. in the possibility of near-term ST fusion burn devices at the level of 10 MA in plasma current. The missions for these devices would be to test burning plasma performance in a small, pulsed D-T-fueled ST (i.e., DTST) and to develop fusion energy technologies in a small steady state ST-based Volume Neutron Source (VNS). This paper reports the results of analysis of the key science and technology issues for these devices.

  18. Structural transitions of ternary imide Li{sub 2}Mg(NH){sub 2} for hydrogen storage

    SciTech Connect (OSTI)

    Liang, C.; Gao, M. X.; Pan, H. G. Liu, Y. F.

    2014-08-25

    Phase transitions and energetic properties of Li{sub 2}Mg(NH){sub 2} with different crystal structures are investigated by experiments and first-principles calculations. The Li{sub 2}Mg(NH){sub 2} with the primitive cubic and orthorhombic structure is obtained by dynamically dehydrogenating a Mg(NH{sub 2}){sub 2}-2LiH mixture up to 280?C under an initial vacuum and 9.0?bars H{sub 2}, respectively. It is found that the obtained orthorhombic Li{sub 2}Mg(NH){sub 2} is converted to a primitive cubic structure as the dehydrogenation temperature is further increased to 400?C or performed by a 36?h of high-energetic ball milling. Moreover, the primitive cubic phase can be converted to an orthorhombic phase after heating at 280?C under 9.0?bars H{sub 2} for 1?h. Thermodynamic calculations show that the orthorhombic phase is the ground state structure of Li{sub 2}Mg(NH){sub 2}. The mechanism for phase transitions of Li{sub 2}Mg(NH){sub 2} is also discussed from the angle of energy.

  19. Siemens Corporate Technology CT | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing Capacity for LowInformationShoshone County,SiCorporate Technology CT

  20. SU-E-I-59: Image Quality and Dose Measurement for Partial Cone-Beam CT

    SciTech Connect (OSTI)

    Abouei, E; Ford, N

    2014-06-01

    Purpose: To characterize performance of cone beam CT (CBCT) used in dentistry investigating quantitatively the image quality and radiation dose during dental CBCT over different settings for partial rotation of the x-ray tube. Methods: Image quality and dose measurements were done on a variable field of view (FOV) dental CBCT (Carestream 9300). X-ray parameters for clinical settings were adjustable for 210 mA, 6090 kVp, and two optional voxel size values, but time was fixed for each FOV. Image quality was assessed by scanning cylindrical poly-methyl methacrylate (PMMA) image quality phantom (SEDENTEXCT IQ), and then the images were analyzed using ImageJ to calculate image quality parameters such as noise, uniformity, and contrast to noise ratio (CNR). A protocol proposed by SEDENTEXCT, dose index 1 (DI1), was applied to dose measurements obtained using a thimble ionization chamber and cylindrical PMMA dose index phantom (SEDENTEXCT DI). Dose distributions were obtained using Gafchromic film. The phantoms were positioned in the FOV to imitate a clinical positioning. Results: The image noise was 612.5% which, when normalized to the difference of mean voxel value of PMMA and air, was comparable between different FOVs. Uniformity was 93.5 99.7% across the images. CNR was 1.74.2 and 6.314.3 for LDPE and Aluminum, respectively. Dose distributions were symmetric about the rotation angle's bisector. For large and medium FOVs at 4 mA and 8090 kVp, DI1 values were in the range of 1.263.23 mGy. DI1 values were between 1.011.93 mGy for small FOV (55 cm{sup 2}) at 45 mA and 7584 kVp. Conclusion: Noise decreased by increasing kVp, and the CNR increased for each FOV. When FOV size increased, image noise increased and CNR decreased. DI1 values were increased by increasing tube current (mA), tube voltage (kVp), and/or FOV. Funding for this project from NSERC Discovery grant, UBC Faculty of Dentistry Research Equipment Grant and UBC Faculty of Dentistry S. Wah Leung Endowment Fund.

  1. MA 16200 Study Guide for material since Exam 3, Fall 2014 NOTE ...

    E-Print Network [OSTI]

    2014-11-28

    MA 16200 Study Guide for material since Exam 3, Fall 2014. NOTE: SINCE THE FINAL EXAM WILL COVER ALL THE MATERIAL OF THE. COURSE, YOU...

  2. Course Syllabus for MA 16100, Fall 2015 Course Objectives: 1. To ...

    E-Print Network [OSTI]

    2015-08-21

    An education study: The university is conducting an education study to measure the effectiveness of MA 16100. There are six course activities connected with...

  3. Examenrooster 1MA Bio-ingenieurswetenschappen: Cel-en Genbiotechnologie + Chemie en Bioprocestechnologie

    E-Print Network [OSTI]

    Einmahl, Uwe

    Examenrooster 1MA Bio-ingenieurswetenschappen: Cel- en Genbiotechnologie + Chemie en (UGent) Mondeling examen: maandag 15/06/2015 Industrile bio-organische chemie (G. VERNIEST) Partim

  4. MA54200 HOMEWORK 1.3. Show that the principal value integral ...

    E-Print Network [OSTI]

    2008-09-15

    MA54200 HOMEWORK. ASSIGNMENT 1: SOLUTIONS. 1.3. Show that the principal value integral. p.v.. ? ?(x) x dx = lim. ??0+. (? ??. ?? ?(x) x dx +. ? ?. ?.

  5. Purdue University Study Guide for MA 224 (For students who plan to ...

    E-Print Network [OSTI]

    becker

    2004-04-09

    Study Guide for MA 224 ... homework problems from the assignment sheet and the final exam practice problems pro- vide good preparation for the examination.

  6. Purdue University Study Guide for MA 220 (For students who plan to ...

    E-Print Network [OSTI]

    becker

    2004-04-12

    Study Guide for MA 220 ... homework problems from the assignment sheet and the final exam practice problems pro- vide good preparation for the examination.

  7. Purdue University Study Guide for MA 222 (For students who plan to ...

    E-Print Network [OSTI]

    becker

    2004-04-09

    Study Guide for MA 222 ... homework problems from the assignment sheet and the final exam practice problems pro- vide good preparation for the examination.

  8. Purdue University Study Guide for MA 221 (For students who plan to ...

    E-Print Network [OSTI]

    becker

    2004-04-09

    Study Guide for MA 221 ... homework problems from the assignment sheet and the final exam practice problems pro- vide good preparation for the examination.

  9. 1 Ma 15200 Lesson 18 Section 1.7 I Representing an Inequality ...

    E-Print Network [OSTI]

    charlotb

    2010-10-04

    1. Ma 15200 Lesson 18 Section 1.7. I. Representing an Inequality. There are 3 ways to represent an inequality. (1) Using the inequality symbol (sometime.

  10. 1 Ma 15200 Lesson 18 Section 1.7 I Representing an Inequality ...

    E-Print Network [OSTI]

    charlotb

    2011-02-22

    1. Ma 15200 Lesson 18 Section 1.7. I. Representing an Inequality. There are 3 ways to represent an inequality. (1) Using the inequality symbol (sometime.

  11. [info:lanl-repo/lareport/LA-UR-15-20995] MaRIE: A facility for...

    Office of Scientific and Technical Information (OSTI)

    5-20995 Title: MaRIE: A facility for time-dependent materials science at the mesoscale Author(s): Barnes, Cris William ; Kippen, Karen Elizabeth Source:...

  12. MA 15300, 15400 and 15800 all use the same textbook: Algebra ...

    E-Print Network [OSTI]

    Department of Mathematics

    2013-01-05

    MA 15300, 15400 and 15800 all use the same textbook: Algebra and Trigonometry with Analytic Geometry by Swokowski and Cole,. Classic 12th Edition...

  13. MA511: PRACTICE TEST 1 Answer all questions. Write your name ...

    E-Print Network [OSTI]

    2014-09-22

    MA511: PRACTICE TEST 1. Answer all questions. Write your name on the question paper and hand it in together with your solutions. No calculators or other

  14. MA MA AP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCentermillion to localPartnership willLynn Rippe LynnParallel

  15. Segmentation of artifacts and anatomy in CT metal artifact reduction

    E-Print Network [OSTI]

    Karimi, Seemeen; Cosman, Pamela; Wald, Christoph; Martz, Harry

    2012-01-01

    Maximum- likelihood dual-energy tomographic imageartifact reduction by dual energy CT using monoenergetictive reconstruction of dual energy data 21 has the potential

  16. The thermal decomposition of NH{sub 2}OH and subsequent reactions : ab initio transition state theory and reflected shock tube experiments.

    SciTech Connect (OSTI)

    Klippenstein, S. J.; Harding, L. B.; Ruscic, B.; Sivaramakrishnan, R.; Srinivasan, N. K.; Su, M.-C.; Michael, J. V.; Chemical Sciences and Engineering Division; Sonoma State Univ.

    2009-01-01

    Primary and secondary reactions involved in the thermal decomposition of NH{sub 2}OH are studied with a combination of shock tube experiments and transition state theory based theoretical kinetics. This coupled theory and experiment study demonstrates the utility of NH{sub 2}OH as a high temperature source of OH radicals. The reflected shock technique is employed in the determination of OH radical time profiles via multipass electronic absorption spectrometry. O-atoms are searched for with atomic resonance absorption spectrometry. The experiments provide a direct measurement of the rate coefficient, k{sub 1}, for the thermal decomposition of NH{sub 2}OH. Secondary rate measurements are obtained for the NH{sub 2} + OH (5a) and NH{sub 2}OH + OH (6a) abstraction reactions. The experimental data are obtained for temperatures in the range from 1355 to 1889 K and are well represented by the respective rate expressions: log[k/(cm{sup 3} molecule{sup -1} s{sup -1})] = (?10.12 {+-} 0.20) + (?6793 {+-} 317 K/T) (k{sub 1}); log[k/(cm{sup 3} molecule{sup -1} s{sup -1})] = (?10.00 {+-} 0.06) + (?879 {+-} 101 K/T) (k{sub 5a}); log[k/(cm{sup 3} molecule{sup -1} s{sup -1})] = (?9.75 {+-} 0.08) + (?1248 {+-} 123 K/T) (k{sub 6a}). Theoretical predictions are made for these rate coefficients as well for the reactions of NH{sub 2}OH + NH{sub 2}, NH{sub 2}OH + NH, NH + OH, NH{sub 2} + NH{sub 2}, NH{sub 2} + NH, and NH + NH, each of which could be of secondary importance in NH{sub 2}OH thermal decomposition. The theoretical analyses employ a combination of ab initio transition state theory and master equation simulations. Comparisons between theory and experiment are made where possible. Modest adjustments of predicted barrier heights (i.e., by 2 kcal/mol or less) generally yield good agreement between theory and experiment. The rate coefficients obtained here should be of utility in modeling NO{sub x} in various combustion environments.

  17. CT. L-2 United States Government

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co -VANaval ,, *' ;x-L* d! CT NC0 - i ,

  18. CT Investment Partners LLP | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButte County, California: Energy ResourcesCRED: A New Model of ClimateOpenCT

  19. Development of a Hydronic Rooftop Unit-HyPak-MA

    SciTech Connect (OSTI)

    Eric Lee; Mark Berman

    2009-11-14

    The majority of U.S. commercial floor space is cooled by rooftop HVAC units (RTUs). RTU popularity derives chiefly from their low initial cost and relative ease of service access without disturbing building occupants. Unfortunately, current RTUs are inherently inefficient due to a combination of characteristics that unnecessarily increase cooling loads and energy use. 36% percent of annual U.S. energy, and two-thirds of electricity, is consumed in and by buildings. Commercial buildings consume approximately 4.2 quads of energy each year at a cost of $230 billion per year, with HVAC equipment consuming 1.2 quads of electricity. More than half of all U.S. commercial floor space is cooled by packaged HVAC units, most of which are rooftop units (RTUs). Inefficient RTUs create an estimated 3.5% of U.S. CO{sub 2} emissions, thus contributing significantly to global warming5. Also, RTUs often fail to maintain adequate ventilation air and air filtration, reducing indoor air quality. This is the second HyPak project to be supported by DOE through NETL. The prior project, referred to as HyPak-1 in this report, had two rounds of prototype fabrication and testing as well as computer modeling and market research. The HyPak-1 prototypes demonstrated the high performance capabilities of the HyPak concept, but made it clear that further development was required to reduce heat exchanger cost and improve system reliability before HyPak commercialization can commence. The HyPak-1 prototypes were limited to about 25% ventilation air fraction, limiting performance and marketability. The current project is intended to develop a 'mixed-air' product that is capable of full 0-100% modulation in ventilation air fraction, hence it was referred to as HyPak-MA in the proposal. (For simplicity, the -MA has been dropped when referencing the current project.) The objective of the HyPak Project is to design, develop and test a hydronic RTU that provides a quantum improvement over conventional RTU performance. Our proposal targeted 60% and 50% reduction in electrical energy use by the HyPak RTU for dry and humid climates, respectively, when compared with a conventional unit, and reduction in peak energy consumption of 50% and 33% respectively. In addition to performance targets, our goal is to develop a production-ready design with durability, reliability and maintainability similar to air-cooled packaged equipment, and that can be commercialized immediately following the conclusion of this project.

  20. Mis `a jour le 5 decembre 2009 Rapport sur ma mission

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Mis `a jour le 5 decembre 2009 Rapport sur ma mission French Science Tour in Pakistan du 25 au Pakistan, `a effectuer une mission French Science Tour in Pakistan du 25 novembre au 2 d'agissait de ma deuxi`eme mission au Pakistan, la premi`ere ayant eu lieu en fevrier 2009, quand j'avais pass

  1. Statistical inference of spectral estimation for continuous-time MA processes with

    E-Print Network [OSTI]

    Statistical inference of spectral estimation for continuous-time MA processes with finite second moments Vicky Fasen In this paper we investigate a continuous-time MA (moving average) process (Xt)t0 of applications, e.g., finance, insurance, physics, signal processing and control. Continuous-time models

  2. 72 School of Communication Master of Arts (MA) in International Journalism Studies

    E-Print Network [OSTI]

    Cheung, Yiu-ming

    72 School of Communication Master of Arts (MA) in International Journalism Studies (One-year Full-time or Two-year Part-time) Mr. CHEUNG Siu Wai, Programme Director Aims The MA in International Journalism Studies Programme provides professional postgraduate studies in international journalism with a particular

  3. Fast Track Program for Master of Arts (M.A.) Degree in Economics

    E-Print Network [OSTI]

    Huang, Haiying

    Fast Track Program for Master of Arts (M.A.) Degree in Economics The Fast Track program will enable outstanding senior undergraduate business and economics students to satisfy degree requirements leading to a master's degree (M.A.) in economics while completing their undergraduate studies. The Fast Track program

  4. Stress direction history of the western United States and Mexico since 85 Ma

    E-Print Network [OSTI]

    Bird, Peter

    Stress direction history of the western United States and Mexico since 85 Ma Peter Bird Department stress azimuth ^s1H was fairly constant at $68 (United States) to 75 (Mexico). During 5035 Ma, both counterclockwise stress changes (in the Pacific Northwest) and clockwise stress changes (from Nevada to New Mexico

  5. Selective catalytic reduction of NOx with NH3 over a Cu-SSZ-13 catalyst prepared by a solid state ion exchange method

    SciTech Connect (OSTI)

    Wang, Di; Gao, Feng; Peden, Charles HF; Li, Junhui; Kamasamudram, Krishna; Epling, William S.

    2014-06-01

    A novel solid state method was developed to synthesize Cu-SSZ-13 catalysts with excellent NH3-SCR performance and durable hydrothermal stability. After the solid state ion exchange (SSIE) process, the SSZ framework structure and surface area was maintained. In-situ DRIFTS and NH3-TPD experiments provide evidence that isolated Cu ions were successfully exchanged into the pores, which are the active centers for the NH3-SCR reaction.

  6. Hanford External Dosimetry Technical Basis Manual PNL-MA-842

    SciTech Connect (OSTI)

    Rathbone, Bruce A.

    2005-02-25

    The Hanford External Dosimetry Technical Basis Manual PNL-MA-842 documents the design and implementation of the external dosimetry system used at Hanford. The manual describes the dosimeter design, processing protocols, dose calculation methodology, radiation fields encountered, dosimeter response characteristics, limitations of dosimeter design under field conditions, and makes recommendations for effective use of the dosimeters in the field. The manual describes the technical basis for the dosimetry system in a manner intended to help ensure defensibility of the dose of record at Hanford and to demonstrate compliance with 10 CFR 835, DOELAP, DOE-RL, ORP, PNSO, and Hanford contractor requirements. The dosimetry system is operated by PNNLs Hanford External Dosimetry Program which provides dosimetry services to all Hanford contractors. The primary users of this manual are DOE and DOE contractors at Hanford using the dosimetry services of PNNL. Development and maintenance of this manual is funded directly by DOE and DOE contractors. Its contents have been reviewed and approved by DOE and DOE contractors at Hanford through the Hanford Personnel Dosimetry Advisory Committee which is chartered and chaired by DOE-RL and serves as means of coordinating dosimetry practices across contractors at Hanford. This manual was established in 1996. Since inception, it has been revised many times and maintained by PNNL as a controlled document with controlled distribution. Rev. 0 marks the first revision to be released through PNNLs Electronic Records & Information Capture Architecture (ERICA) database.

  7. Coronary CT angiography offers further risk stratification in the management of patients with normal SPECT results

    E-Print Network [OSTI]

    Budoff, Matthew J.; Hacioglu, Yalcin

    2010-01-01

    Coronary CT angiography offers further risk strati?cation inCoronary CT angiography offers further risk strati?cationCoronary CT angiography offers further risk strati?cation

  8. NH3 formation and utilization in regenerationof Pt/Ba/Al2O3 NOx storage-reduction catalyst with H2

    SciTech Connect (OSTI)

    Partridge Jr, William P [ORNL; Choi, Jae-Soon [ORNL

    2009-01-01

    The nature of H2 regeneration of a model Pt/Ba/Al2O3 LNT catalyst was investigated with specific focus on intra-catalyst formation and utilization of NH3 and its role in catalyst regeneration. In-situ measurements of the transient intra-catalyst species (H2, NH3, N2, NOx) distributions at different temperatures were used to detail the reaction evolution along the catalyst axis. Comparison of the species transients identifies unique individual natures for the reductant (H2), inert product (N2) and intermediate-reductant product (NH3) which readily explain the conventional effluent species sequence as an integral effect. The data demonstrates that NH3 is created on similar timescales as the N2 product inside the catalyst, but consumed as aggressively as H2 reductant along the catalyst. This spatiotemporal NH3 behavior experimentally confirms that Intermediate-NH3 regeneration pathway is active. Analysis at 200 and 325 C indicates equivalent local NOx storage, H2 consumption and regeneration effectiveness, but differing NH3/N2 ratio, suggesting a temperature-dependence of partitioning between Direct-H2 and Intermediate-NH3 regeneration pathways. Further experimental and numerical work is needed to more clearly understand the partitioning between the possible regeneration pathways. Nevertheless, the experimental data show that intermediate NH3 plays a significant role in LNT catalyst regeneration.

  9. David J. Brenner, PhD, DSc Carl D. Elliston, MA

    E-Print Network [OSTI]

    Brenner, David Jonathan

    .S. Department of Energy Low-Dose Radiation Research Program grants DE-FG-0201ER6326 and DE-FG-0298ER62686. The radiation issue is pertinent because CT examinations result in much higher organ doses than those (CT), radiation exposure, 60.47, 72.47 Radiations, injurious effects, 60.47, 72.47 Published online

  10. Lung Segmentation from CT with Severe Pathologies Using Anatomical Constraints

    E-Print Network [OSTI]

    Lung Segmentation from CT with Severe Pathologies Using Anatomical Constraints Neil Birkbeck Healthcare, Oxford, UK Abstract. The diversity in appearance of diseased lung tissue makes automatic segmentation of lungs from CT with severe pathologies chal- lenging. To overcome this challenge, we rely

  11. Automatic Labeling and Segmentation of Vertebrae in CT Images

    E-Print Network [OSTI]

    Freitas, Nando de

    vertebral column. I validate my technique in terms of accuracy of the labeling and segmentation of CT images handled labeling of the vertebral column in arbitrary scans [3, 4]. Klinder et al. build a template (mean(s) Affiliation Address email Abstract Detection, Labeling, and segmentation of the spinal column from CT images

  12. MicroCT: Semi-Automated Analysis of CT Reconstructed Data of Home Made Explosive Materials Using the Matlab MicroCT Analysis GUI

    SciTech Connect (OSTI)

    Seetho, I M; Brown, W D; Kallman, J S; Martz, H E; White, W T

    2011-09-22

    This Standard Operating Procedure (SOP) provides the specific procedural steps for analyzing reconstructed CT images obtained under the IDD Standard Operating Procedures for data acquisition [1] and MicroCT image reconstruction [2], per the IDD Quality Assurance Plan for MicroCT Scanning [3]. Although intended to apply primarily to MicroCT data acquired in the HEAFCAT Facility at LLNL, these procedures may also be applied to data acquired at Tyndall from the YXLON cabinet and at TSL from the HEXCAT system. This SOP also provides the procedural steps for preparing the tables and graphs to be used in the reporting of analytical results. This SOP applies to R and D work - for production applications, use [4].

  13. MicroCT: Automated Analysis of CT Reconstructed Data of Home Made Explosive Materials Using the Matlab MicroCT Analysis GUI

    SciTech Connect (OSTI)

    Seetho, I M; Brown, W D; Kallman, J S; Martz, H E; White, W T

    2011-09-22

    This Standard Operating Procedure (SOP) provides the specific procedural steps for analyzing reconstructed CT images obtained under the IDD Standard Operating Procedures for data acquisition [1] and MicroCT image reconstruction [2], per the IDD Quality Assurance Plan for MicroCT Scanning [3]. Although intended to apply primarily to MicroCT data acquired in the HEAFCAT Facility at LLNL, these procedures may also be applied to data acquired at Tyndall from the YXLON cabinet and at TSL from the HEXCAT system. This SOP also provides the procedural steps for preparing the tables and graphs to be used in the reporting of analytical results. This SOP applies to production work - for R and D there are two other semi-automated methods as given in [4, 5].

  14. Multi-energy CT Based on a Prior Rank, Intensity and Sparsity Model (PRISM)

    E-Print Network [OSTI]

    Soatto, Stefano

    -color, as a natural extension of dual energy CT [1], the future of CT will be multi-energy, generating much richer

  15. Topics for BA and MA Theses at the chair of Prof. Klasen The list below gives contains proposals for Bachelor (BA) and Master (MA) thesis topics. You can also

    E-Print Network [OSTI]

    Krivobokova, Tatyana

    levels and dynamics in Russia / Cote d'Ivoire/ (any country where an appropriate dataset can be found) MA sequence do countries improve their human development performance? MA Export-oriented growth and female

  16. SU-E-I-63: Quantitative Evaluation of the Effects of Orthopedic Metal Artifact Reduction (OMAR) Software On CT Images for Radiotherapy Simulation

    SciTech Connect (OSTI)

    Jani, S [Sharp Memorial Hospital, San Diego, CA (United States)

    2014-06-01

    Purpose: CT simulation for patients with metal implants can often be challenging due to artifacts that obscure tumor/target delineation and normal organ definition. Our objective was to evaluate the effectiveness of Orthopedic Metal Artifact Reduction (OMAR), a commercially available software, in reducing metal-induced artifacts and its effect on computed dose during treatment planning. Methods: CT images of water surrounding metallic cylindrical rods made of aluminum, copper and iron were studied in terms of Hounsfield Units (HU) spread. Metal-induced artifacts were characterized in terms of HU/Volume Histogram (HVH) using the Pinnacle treatment planning system. Effects of OMAR on enhancing our ability to delineate organs on CT and subsequent dose computation were examined in nine (9) patients with hip implants and two (2) patients with breast tissue expanders. Results: Our study characterized water at 1000 HU with a standard deviation (SD) of about 20 HU. The HVHs allowed us to evaluate how the presence of metal changed the HU spread. For example, introducing a 2.54 cm diameter copper rod in water increased the SD in HU of the surrounding water from 20 to 209, representing an increase in artifacts. Subsequent use of OMAR brought the SD down to 78. Aluminum produced least artifacts whereas Iron showed largest amount of artifacts. In general, an increase in kVp and mA during CT scanning showed better effectiveness of OMAR in reducing artifacts. Our dose analysis showed that some isodose contours shifted by several mm with OMAR but infrequently and were nonsignificant in planning process. Computed volumes of various dose levels showed <2% change. Conclusions: In our experience, OMAR software greatly reduced the metal-induced CT artifacts for the majority of patients with implants, thereby improving our ability to delineate tumor and surrounding organs. OMAR had a clinically negligible effect on computed dose within tissues. Partially funded by unrestricted educational grant from Philips.

  17. Hanford External Dosimetry Technical Basis Manual PNL-MA-842

    SciTech Connect (OSTI)

    Rathbone, Bruce A.

    2009-08-28

    The Hanford External Dosimetry Technical Basis Manual PNL-MA-842 documents the design and implementation of the external dosimetry system used at Hanford. The manual describes the dosimeter design, processing protocols, dose calculation methodology, radiation fields encountered, dosimeter response characteristics, limitations of dosimeter design under field conditions, and makes recommendations for effective use of the dosimeters in the field. The manual describes the technical basis for the dosimetry system in a manner intended to help ensure defensibility of the dose of record at Hanford and to demonstrate compliance with 10 CFR 835, DOELAP, DOE-RL, ORP, PNSO, and Hanford contractor requirements. The dosimetry system is operated by PNNLs Hanford External Dosimetry Program (HEDP) which provides dosimetry services to all Hanford contractors. The primary users of this manual are DOE and DOE contractors at Hanford using the dosimetry services of PNNL. Development and maintenance of this manual is funded directly by DOE and DOE contractors. Its contents have been reviewed and approved by DOE and DOE contractors at Hanford through the Hanford Personnel Dosimetry Advisory Committee (HPDAC) which is chartered and chaired by DOE-RL and serves as means of coordinating dosimetry practices across contractors at Hanford. This manual was established in 1996. Since inception, it has been revised many times and maintained by PNNL as a controlled document with controlled distribution. The first revision to be released through PNNLs Electronic Records & Information Capture Architecture (ERICA) database was designated Revision 0. Revision numbers that are whole numbers reflect major revisions typically involving changes to all chapters in the document. Revision numbers that include a decimal fraction reflect minor revisions, usually restricted to selected chapters or selected pages in the document.

  18. Closed-loop control of a SCR system using a NOx sensor cross-sensitive to NH3

    E-Print Network [OSTI]

    for an automotive selective catalytic reduction (SCR) system, for which the feedback is based on a NOx sensor illustrate the performance of the proposed approach. Keywords: Automotive emissions; Diesel engines; NOx, a mechanism is introduced to prevent large NH3-slip that could result from misinterpretation of data produced

  19. Adapted from laboratory protocols of the Center for Freshwater Biology, University of New Hampshire, Durham, N.H. 2010

    E-Print Network [OSTI]

    New Hampshire, University of

    , Durham, N.H. 2010 UNH CFB Protocol for the Monitoring of Cyanobacteria & Microcystins in Drinking Water delivery to UNH CFB lab. 5. Freeze the sample if delivery/ drop-off time exceeds 12 hours. Analyses: a, Quantiplate-ELISA Kit, (Portland, Me) with increased sensitivity (UNH, CFB). Results will be reported as ng

  20. Role of hydrogen-bonding and its interplay with octahedral tilting in CH3NH3PbI3

    E-Print Network [OSTI]

    Lee, Jung-Hoon; Bristowe, Nicholas C.; Bristowe, Paul D.; Cheetham, Anthony K.

    2015-03-05

    First principles calculations on the hybrid perovskite CH3NH3PbI3 predict strong hydrogen-bonding which influences the structure and dynamics of the methylammonium cation and reveal its interaction with the tilting of the PbI6 octahedra...

  1. Ultralow Absorption Coefficient and Temperature Dependence of Radiative Recombination of CH3NH3PbI3 Perovskite from

    E-Print Network [OSTI]

    Perovskite from Photoluminescence Chog Barugkin, Jinjin Cong, The Duong, Shakir Rahman, Hieu T. Nguyen perovskite methylammonium lead iodide (CH3NH3PbI3) films from 675 to 1400 nm. Unlike other methods used of organic-inorganic halide perovskite- based solar cells has attracted enormous interest from the entire PV

  2. Access Management in Multi-Administration Networks S. P. Lord, N.H. Pope, and Susan Stepney

    E-Print Network [OSTI]

    Stepney, Susan

    Access Management in Multi-Administration Networks S. P. Lord, N.H. Pope, and Susan Stepney GEC by different administrations, and allowing these administrations to maintain autonomy but to use each others services. Consider also what happens if these administrations have different policies on how access should

  3. Effect of sulfated CaO on NO reduction by NH{sub 3} in the presence of excess oxygen

    SciTech Connect (OSTI)

    Tianjin Li; Yuqun Zhuo; Yufeng Zhao; Changhe Chen; Xuchang Xu [Tsinghua University, Beijing (China). Key Laboratory for Thermal Science and Power Engineering of Ministry of Education

    2009-04-15

    The effect of sulfated CaO on NO reduction by NH{sub 3} in the presence of excess oxygen was investigated to evaluate the potential of simultaneous SO{sub 2} and NO removal at the temperature range of 700-850{sup o}C. The physical and chemical properties of the CaO sulfation products were analyzed to investigate the NO reduction mechanism. Experimental results showed that sulfated CaO had a catalytic effect on NO reduction by NH{sub 3} in the presence of excess O{sub 2} after the sulfation reaction entered the transition control stage. With the increase of CaO sulfation extent in this stage, the activity for NO reduction first increased and then decreased, and the selectivity of NH{sub 3} for NO reduction to N{sub 2} increased. The byproduct (NO{sub 2} and N{sub 2}O) formation during NO reduction experiments was negligible. X-ray photoelectron spectroscopy (XPS) analysis showed that neither CaSO{sub 3} nor CaS was detected, indicating that the catalytic activity of NO reduction by NH{sub 3} in the presence of excess O{sub 2} over sulfated CaO was originated from the CaSO{sub 4} product. These results revealed that simultaneous SO{sub 2} and NOx control by injecting NH{sub 3} into the dry flue gas desulfurization process for NO reduction might be achieved. 38 refs., 6 figs., 1 tab.

  4. Verification of Allowable Stresses In ASME Section III Subsection NH For Grade 91 Steel & Alloy 800H

    SciTech Connect (OSTI)

    R. W. Swindeman; M. J. Swindeman; B. W. Roberts; B. E. Thurgood; D. L. Marriott

    2007-11-30

    The database for the creep-rupture of 9Cr-1Mo-V (Grade 91) steel was collected and reviewed to determine if it met the needs for recommending time-dependent strength values, S{sub t}, for coverage in ASME Section III Subsection NH (ASME III-NH) to 650 C (1200 F) and 600,000 hours. The accumulated database included over 300 tests for 1% total strain, nearly 400 tests for tertiary creep, and nearly 1700 tests to rupture. Procedures for analyzing creep and rupture data for ASME III-NH were reviewed and compared to the procedures used to develop the current allowable stress values for Gr 91 for ASME II-D. The criteria in ASME III-NH for estimating S{sub t} included the average strength for 1% total strain for times to 600,000 hours, 80% of the minimum strength for tertiary creep for times to 600,000 hours, and 67% of the minimum rupture strength values for times to 600,000 hours. Time-temperature-stress parametric formulations were selected to correlate the data and make predictions of the long-time strength. It was found that the stress corresponding to 1% total strain and the initiation of tertiary creep were not the controlling criteria over the temperature-time range of concern. It was found that small adjustments to the current values in III-NH could be introduced but that the existing values were conservative and could be retained. The existing database was found to be adequate to extend the coverage to 600,000 hours for temperatures below 650 C (1200 F).

  5. Update and Improve Subsection NH Alternative Simplified Creep-Fatigue Design Methods

    SciTech Connect (OSTI)

    Tai Asayama

    2009-10-26

    This report described the results of investigation on Task 10 of DOE/ASME Materials NGNP/Generation IV Project based on a contract between ASME Standards Technology, LLC (ASME ST-LLC) and Japan Atomic Energy Agency (JAEA). Task 10 is to Update and Improve Subsection NH -- Alternative Simplified Creep-Fatigue Design Methods. Five newly proposed promising creep-fatigue evaluation methods were investigated. Those are (1) modified ductility exhaustion method, (2) strain range separation method, (3) approach for pressure vessel application, (4) hybrid method of time fraction and ductility exhaustion, and (5) simplified model test approach. The outlines of those methods are presented first, and predictability of experimental results of these methods is demonstrated using the creep-fatigue data collected in previous Tasks 3 and 5. All the methods (except the simplified model test approach which is not ready for application) predicted experimental results fairly accurately. On the other hand, predicted creep-fatigue life in long-term regions showed considerable differences among the methodologies. These differences come from the concepts each method is based on. All the new methods investigated in this report have advantages over the currently employed time fraction rule and offer technical insights that should be thought much of in the improvement of creep-fatigue evaluation procedures. The main points of the modified ductility exhaustion method, the strain range separation method, the approach for pressure vessel application and the hybrid method can be reflected in the improvement of the current time fraction rule. The simplified mode test approach would offer a whole new advantage including robustness and simplicity which are definitely attractive but this approach is yet to be validated for implementation at this point. Therefore, this report recommends the following two steps as a course of improvement of NH based on newly proposed creep-fatigue evaluation methodologies. The first step is to modify the current approach by incorporating the partial advantages the new method offer, and the second step is to replace the current method by the simplified test approach when it has become technically mature enough. The recommendations are basically in line with the work scope of the Task Force on Creep-Fatigue of the Subgroup on Elevated Temperature Design of the Standards Committee of the ASME Boiler and Pressure Vessel Committee Section III.

  6. Intramolecular Hydrogen Bonding in Disubstituted Ethanes. A Comparison of NH,,,O-and OH,,,O-Hydrogen Bonding through Conformational Analysis of 4-Amino-4-oxobutanoate

    E-Print Network [OSTI]

    Goddard III, William A.

    Intramolecular Hydrogen Bonding in Disubstituted Ethanes. A Comparison of NH,,,O- and OH,,,O- Hydrogen Bonding through Conformational Analysis of 4-Amino-4-oxobutanoate (succinamate) and Monohydrogen 1 of amide NH,,,O- and carboxyl OH,,,O- hydrogen bonds were investigated via conformational analysis

  7. New England Regional Program

    E-Print Network [OSTI]

    Massachusetts at Lowell, University of

    & ENVIRONMENT Clinical Lab Science Masters CT ME NH VT Health Informatics & Mgt. Masters NH RI VT Nursing (Adult Psychiatric Optn. only) Masters NH Nursing PHD ME NH VT Nursing DNP NH VT Physical Therapy Doctoral ME NH Work

  8. Hanford External Dosimetry Technical Basis Manual PNL-MA-842

    SciTech Connect (OSTI)

    Rathbone, Bruce A.

    2007-03-12

    The Hanford External Dosimetry Technical Basis Manual PNL-MA-842 documents the design and implementation of the external dosimetry system used at Hanford. The manual describes the dosimeter design, processing protocols, dose calculation methodology, radiation fields encountered, dosimeter response characteristics, limitations of dosimeter design under field conditions, and makes recommendations for effective use of the dosimeters in the field. The manual describes the technical basis for the dosimetry system in a manner intended to help ensure defensibility of the dose of record at Hanford and to demonstrate compliance with 10 CFR 835, DOELAP, DOE-RL, ORP, PNSO, and Hanford contractor requirements. The dosimetry system is operated by PNNLs Hanford External Dosimetry Program (HEDP) which provides dosimetry services to all Hanford contractors. The primary users of this manual are DOE and DOE contractors at Hanford using the dosimetry services of PNNL. Development and maintenance of this manual is funded directly by DOE and DOE contractors. Its contents have been reviewed and approved by DOE and DOE contractors at Hanford through the Hanford Personnel Dosimetry Advisory Committee (HPDAC) which is chartered and chaired by DOE-RL and serves as means of coordinating dosimetry practices across contractors at Hanford. This manual was established in 1996. Since inception, it has been revised many times and maintained by PNNL as a controlled document with controlled distribution. Rev. 0 marks the first revision to be released through PNNLs Electronic Records & Information Capture Architecture (ERICA) database. Revision numbers that are whole numbers reflect major revisions typically involving changes to all chapters in the document. Revision numbers that include a decimal fraction reflect minor revisions, usually restricted to selected chapters or selected pages in the document. Revision Log: Rev. 0 (2/25/2005) Major revision and expansion. Rev. 0.1 (3/12/2007) Minor revision. Updated Chapters 5, 6 and 9 to reflect change in default ring calibration factor used in HEDP dose calculation software. Factor changed from 1.5 to 2.0 beginning January 1, 2007. Pages on which changes were made are as follows: 5.23, 5.69, 5.78, 5.80, 5.82, 6.3, 6.5, 6.29, 9.2.

  9. Hanford External Dosimetry Technical Basis Manual PNL-MA-842

    SciTech Connect (OSTI)

    Rathbone, Bruce A.

    2011-04-04

    The Hanford External Dosimetry Technical Basis Manual PNL-MA-842 documents the design and implementation of the external dosimetry system used at the U.S. Department of Energy (DOE) Hanford site. The manual describes the dosimeter design, processing protocols, dose calculation methodology, radiation fields encountered, dosimeter response characteristics, limitations of dosimeter design under field conditions, and makes recommendations for effective use of the dosimeters in the field. The manual describes the technical basis for the dosimetry system in a manner intended to help ensure defensibility of the dose of record at Hanford and to demonstrate compliance with requirements of 10 CFR 835, the DOE Laboratory Accreditation Program, the DOE Richland Operations Office, DOE Office of River Protection, DOE Pacific Northwest Office of Science, and Hanfords DOE contractors. The dosimetry system is operated by the Pacific Northwest National Laboratory (PNNL) Hanford External Dosimetry Program which provides dosimetry services to PNNL and all Hanford contractors. The primary users of this manual are DOE and DOE contractors at Hanford using the dosimetry services of PNNL. Development and maintenance of this manual is funded directly by DOE and DOE contractors. Its contents have been reviewed and approved by DOE and DOE contractors at Hanford through the Hanford Personnel Dosimetry Advisory Committee which is chartered and chaired by DOE-RL and serves as means of coordinating dosimetry practices across contractors at Hanford. This manual was established in 1996. Since its inception, it has been revised many times and maintained by PNNL as a controlled document with controlled distribution. The first revision to be released through PNNLs Electronic Records & Information Capture Architecture database was designated Revision 0. Revision numbers that are whole numbers reflect major revisions typically involving significant changes to all chapters in the document. Revision numbers that include a decimal fraction reflect minor revisions, usually restricted to selected chapters or selected pages in the document. Maintenance and distribution of controlled hard copies of the manual by PNNL was discontinued beginning with Revision 0.2.

  10. Hanford External Dosimetry Technical Basis Manual PNL-MA-842

    SciTech Connect (OSTI)

    Rathbone, Bruce A.

    2010-04-01

    The Hanford External Dosimetry Technical Basis Manual PNL-MA-842 documents the design and implementation of the external dosimetry system used at the U.S. Department of Energy (DOE) Hanford site. The manual describes the dosimeter design, processing protocols, dose calculation methodology, radiation fields encountered, dosimeter response characteristics, limitations of dosimeter design under field conditions, and makes recommendations for effective use of the dosimeters in the field. The manual describes the technical basis for the dosimetry system in a manner intended to help ensure defensibility of the dose of record at Hanford and to demonstrate compliance with requirements of 10 CFR 835, the DOE Laboratory Accreditation Program, the DOE Richland Operations Office, DOE Office of River Protection, DOE Pacific Northwest Office of Science, and Hanfords DOE contractors. The dosimetry system is operated by the Pacific Northwest National Laboratory (PNNL) Hanford External Dosimetry Program which provides dosimetry services to PNNL and all Hanford contractors. The primary users of this manual are DOE and DOE contractors at Hanford using the dosimetry services of PNNL. Development and maintenance of this manual is funded directly by DOE and DOE contractors. Its contents have been reviewed and approved by DOE and DOE contractors at Hanford through the Hanford Personnel Dosimetry Advisory Committee which is chartered and chaired by DOE-RL and serves as means of coordinating dosimetry practices across contractors at Hanford. This manual was established in 1996. Since its inception, it has been revised many times and maintained by PNNL as a controlled document with controlled distribution. The first revision to be released through PNNLs Electronic Records & Information Capture Architecture database was designated Revision 0. Revision numbers that are whole numbers reflect major revisions typically involving significant changes to all chapters in the document. Revision numbers that include a decimal fraction reflect minor revisions, usually restricted to selected chapters or selected pages in the document. Maintenance and distribution of controlled hard copies of the manual by PNNL was discontinued beginning with Revision 0.2.

  11. Wireless Network Security and Interworking MINHO SHIN, JUSTIN MA, ARUNESH MISHRA, AND WILLIAM A. ARBAUGH

    E-Print Network [OSTI]

    Wireless Network Security and Interworking MINHO SHIN, JUSTIN MA, ARUNESH MISHRA, AND WILLIAM A, in- terworking between heterogeneous wireless networks is extremely important for ubiquitous and high communication technologies cover a whole spec- trum from wireless personal area networks (WPANs

  12. MA 153 - Quiz 18 (?2 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-11-04

    MA 153 - Quiz 18 (?2 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 8.5 8.7. Max. 10. 9. Min. 4. 4. Four points are free on this quiz. 1. Let f and...

  13. MA 153 - Quiz 9 (?10 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-09-30

    MA 153 - Quiz 9 (?10 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 7.6 8.5. Max. 10 10. Min. 3. 3. 1. Write. 4i. 2 ? i as a real part plus an...

  14. MA 261 - Quiz 9 (20 minutes) Tuesday, April 5, 2011 Solution ...

    E-Print Network [OSTI]

    2011-04-11

    MA 261 - Quiz 9 (20 minutes). Tuesday, April 5, 2011. Solution. Statistics (out of 20): Section. 23. 24. Average. 13.2 12.7. Standard Deviation 4.8. 4.6. Median. 14.

  15. MA 153 - Quiz 17 (?10 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-11-04

    MA 153 - Quiz 17 (?10 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 8.7 9.1. Max. 10 10. Min. 1. 7. This is a take-home quiz. It should be...

  16. MA 261 - Quiz 11 (20 minutes) Tuesday, April 19, 2011 Solution ...

    E-Print Network [OSTI]

    2011-04-25

    MA 261 - Quiz 11 (20 minutes). Tuesday, April 19, 2011. Solution. Statistics (out of 20): Section. 23. 24. Average. 14.5 13.4. Standard Deviation 3.2. 3.4. Median.

  17. MA 153 - Quiz 20 (?10 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-11-28

    MA 153 - Quiz 20 (?10 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 9.6 11. Max. 13 13. Min. 7. 8. This is an open-note, open-book quiz.

  18. MA 153 - Quiz 15 (?10 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-10-28

    MA 153 - Quiz 15 (?10 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 7.6 6.9. Max. 10. 9. Min. 4. 2. This is a take-home quiz. It should be...

  19. MA 153 - Quiz 13 (?5 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-10-17

    MA 153 - Quiz 13 (?5 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 5.7 6.1. Max. 10. 9. Min. 1. 1. 1. A returning baseball player starts the...

  20. MA 261 - Quiz 6 (20 minutes) Tuesday, March 1, 2011 Solution ...

    E-Print Network [OSTI]

    2011-03-07

    MA 261 - Quiz 6 (20 minutes). Tuesday, March 1, 2011. Solution. Statistics (out of 20): Section. 23. 24. Average. 15.9 15.3. Standard Deviation 3.7. 4.0. Median.

  1. MA 261 - Quiz 10 (20 minutes) Tuesday, April 12, 2011 Solution ...

    E-Print Network [OSTI]

    2011-04-19

    MA 261 - Quiz 10 (20 minutes). Tuesday, April 12, 2011. Solution. Statistics (out of 20): Section. 23. 24. Average. 12.7 14.2. Standard Deviation 5.1. 5.1. Median.

  2. MA 153 - Quiz 7 (?4 minutes) Solution Statistics (out of 10): Section ...

    E-Print Network [OSTI]

    2011-09-23

    MA 153 - Quiz 7 (?4 minutes). Solution. Statistics (out of 10): Section 36. 42. Average 9 9.14. Max. 10. 10. Min. 6. 6. This is an open-note/book quiz. 4 points are...

  3. MA 153 - Quiz 4 (7 minutes) Solution Statistics (out of 10): Section ...

    E-Print Network [OSTI]

    2011-09-08

    MA 153 - Quiz 4 (7 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 7.9 8.5. Max. 10 10. Min. 2. 3. 1. (6 points). (a) (4 points) Write y x. ?.

  4. MA 153 - Quiz 5 (10 minutes) Solution Statistics (out of 10): Section ...

    E-Print Network [OSTI]

    2011-09-14

    MA 153 - Quiz 5 (10 minutes). Solution. Statistics (out of 10): Section. 36. 42. Average 8.45 8.3. Max. 10. 10. Min. 1. 2. 1. (5 points) Nancy has earned 93, 83 and...

  5. MA 153 - Quiz 6 (10 minutes) Solution Statistics (out of 10): Section ...

    E-Print Network [OSTI]

    2011-09-19

    MA 153 - Quiz 6 (10 minutes). Solution. Statistics (out of 10): Section. 36. 42. Average 8.12 8.78. Max. 10. 10. Min. 4. 2. 1. (5 points) Jake has 3 meters of wire,

  6. MA 261 - Quiz 8 (20 minutes) Tuesday, March 22, 2011 Solution ...

    E-Print Network [OSTI]

    2011-04-11

    MA 261 - Quiz 8 (20 minutes). Tuesday, March 22, 2011. Solution. Statistics (out of 20): Section. 23. 24. Average. 12.3 12.6. Standard Deviation 5.0. 4.1. Median.

  7. MA 153 - Quiz 14 (?10 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-10-28

    MA 153 - Quiz 14 (?10 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 8.1 8.1. Max. 10. 9. Min. 4. 6. This is a take-home quiz. It should be...

  8. MA 153 - Quiz 1 (5 minutes) Solution Statistics (out of 10): Section ...

    E-Print Network [OSTI]

    2011-09-08

    MA 153 - Quiz 1 (5 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 5.5 6.7. Max. 9. 10. Min. 1. 1. 1. (2 points) Evaluate (-4)|6(-2) + 3|. Solution:.

  9. MA/STAT 25000 Syllabus Fall 2015 Problem Solving in Probability

    E-Print Network [OSTI]

    2015-08-28

    MA/STAT 25000. Syllabus. Fall 2015. Problem Solving in Probability. Meeting Times and Location: TR 3:30-4:20pm in UNIV 003. Instructor: Rachel Lynn. E-

  10. Ma,BonzongoandGao/UniversityofFlorida Characterization and Leachability of Coal Combustion Residues

    E-Print Network [OSTI]

    Ma, Lena

    Ma,BonzongoandGao/UniversityofFlorida Characterization and Leachability of Coal Combustion Residues an important solid waste in Florida, i.e., coal combustion residues (CCR) detailed in #2-4 of the current

  11. Optimization models in finance Ma 450 Darinka Dentcheva Fall 2014 darinka.dentcheva@stevens.edu

    E-Print Network [OSTI]

    Dentcheva, Darinka

    Optimization models in finance Ma 450 Darinka Dentcheva Fall 2014 darinka and dynamic optimization problems occurring in finance. We shall discuss linear and non-linear optimization models of finance, dynamic (sequential) optimization, optimization under uncertainty, mathematical models

  12. Examenrooster 2MA Bio-ingenieurswetenschappen: Cel-en Genbiotechnologie + Chemie en Bioprocestechnologie

    E-Print Network [OSTI]

    Einmahl, Uwe

    Examenrooster 2MA Bio-ingenieurswetenschappen: Cel- en Genbiotechnologie + Chemie en-ingenieurswetenschappen (PROMOTOR) Maandag 29/06/2015 (tijdstip en lokaal navragen op secretariaat IMDO) Medicinale Chemie (S

  13. MaRIE 1.0: The Matter-Radiation Interactions in Extremes Project...

    Office of Scientific and Technical Information (OSTI)

    The Matter-Radiation Interactions in Extremes Project, and the Challenge of Dynamic Mesoscale Imaging Citation Details In-Document Search Title: MaRIE 1.0: The Matter-Radiation...

  14. MA 30300 Test 2 Jul. 21, 2015 Your Name(Last, First) Show your ...

    E-Print Network [OSTI]

    2015-07-16

    MA 30300 Test 2. Jul. 21, 2015. Your Name(Last, First). Show your work, circle the answer! 1. Solve the initial value problem. y// + y = ?(t - 2?) cost, y(0) = 0, y/(0)

  15. Rapport sur ma mission au Vietnam du 12 au 17 Novembre 2007 Michel Waldschmidt

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Rapport sur ma mission au Vietnam du 12 au 17 Novembre 2007 Michel Waldschmidt Le contexte. Les. Cette mission d'enseignement Vietnam2007.pdf> a bnfici du soutien de Formath Vietnam

  16. Iterative Multivariate Regression Model for Correlated Responses Prediction S. Tom Au, Guangqin Ma, Rensheng Wang

    E-Print Network [OSTI]

    Greenberg, Albert

    Iterative Multivariate Regression Model for Correlated Responses Prediction S. Tom Au, Guangqin Ma- tive procedure to model multiple responses prediction into correlated multivariate predicting scheme, which is always favorable for responses separations in our multivariate prediction. We also point out

  17. Recommendations to the Campus Committee : an organizing strategy for the North End of Springfield, MA

    E-Print Network [OSTI]

    Banks, Peter Samuel

    2008-01-01

    The North End neighborhood of Springfield, MA is one of the poorest areas in the entire Commonwealth. For many years, agencies in the community have worked to provide basic services to the residents, who are primarily ...

  18. MA511: PRACTICE TEST 3 Answer all questions (each worth 4 ...

    E-Print Network [OSTI]

    2013-12-01

    MA511: PRACTICE TEST 3. Answer all questions (each worth 4 points). Show your working for any question not split into. (a),(b),(c),(d). No calculators or other...

  19. MA 153 - Quiz 8 (?10 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-09-26

    MA 153 - Quiz 8 (?10 minutes). Solution. Statistics (out of 10): Section. 36. 42. Average 7.64 7. Max. 10. 10. Min. 4. 3. 1. (5 points) Garrett has found that the...

  20. MA 111 Exam 2 Memo Exam 2 Tuesday, March 5 8:30 pm SMITH ...

    E-Print Network [OSTI]

    2002-02-22

    MA 111 Exam 2 Memo. Exam 2 Tuesday, March 5 8:30 pm SMITH 108. 1) Exam 2 covers sections 2.2 through 2.6 and the first three sections of chapter 3.

  1. Biochemical characterization of derivatives of MA-T12D11, a TAFI neutralizing antibody

    E-Print Network [OSTI]

    Develter, J.; Declerck, P. J.; Gils, A.

    2006-10-27

    ) a0 Monoclonal Antibodies (MA) towards human TAFI were raised in our lab. a0 MA-T12D11 inhibits the activation of TAFI by T/TM. Figure 1 Scheme of blood coagulation and fibrinolysis Introduction Objective Materials & Methods Conclusions 1 Bajzar... it in a clot lysis assay. 0 50 100 150 200 250 300 0.85 0.95 1.05 1.15 1.25 1.35 1.45 MA-T12D11 Fab-T12D11 CPI 0.9% NaCl Time (min) O D ( 4 0 5 n m ) -MA, Fab and CPI shorten clot lysis time significantly (i.e. 28.3 ? 2.9 min, 29.2 ? 10 min and 34...

  2. MA 15910 Lesson 10 Notes, Section 3.1 (2 half of text) Part 2 of ...

    E-Print Network [OSTI]

    Bailey, Charlotte M

    2014-09-24

    equivalent expression. Direct substation before simplifying may yield 0/0. 2. 3. 3. 3 .... Let C(t) be the cost to mail a letter in the year t. Find the following. (You will...

  3. Hanford External Dosimetry Technical Basis Manual PNL-MA-842

    SciTech Connect (OSTI)

    Rathbone, Bruce A.

    2010-01-01

    The Hanford External Dosimetry Technical Basis Manual PNL-MA-842 documents the design and implementation of the external dosimetry system used at Hanford. The manual describes the dosimeter design, processing protocols, dose calculation methodology, radiation fields encountered, dosimeter response characteristics, limitations of dosimeter design under field conditions, and makes recommendations for effective use of the dosimeters in the field. The manual describes the technical basis for the dosimetry system in a manner intended to help ensure defensibility of the dose of record at Hanford and to demonstrate compliance with 10 CFR 835, DOELAP, DOE-RL, ORP, PNSO, and Hanford contractor requirements. The dosimetry system is operated by PNNLs Hanford External Dosimetry Program (HEDP) which provides dosimetry services to all Hanford contractors. The primary users of this manual are DOE and DOE contractors at Hanford using the dosimetry services of PNNL. Development and maintenance of this manual is funded directly by DOE and DOE contractors. Its contents have been reviewed and approved by DOE and DOE contractors at Hanford through the Hanford Personnel Dosimetry Advisory Committee (HPDAC) which is chartered and chaired by DOE-RL and serves as means of coordinating dosimetry practices across contractors at Hanford. This manual was established in 1996. Since its inception, it has been revised many times and maintained by PNNL as a controlled document with controlled distribution. The first revision to be released through PNNLs Electronic Records & Information Capture Architecture (ERICA) database was designated Revision 0. Revision numbers that are whole numbers reflect major revisions typically involving significant changes to all chapters in the document. Revision numbers that include a decimal fraction reflect minor revisions, usually restricted to selected chapters or selected pages in the document. Maintenance and distribution of controlled hard copies of the manual by PNNL was discontinued beginning with Revision 0.2. Revision Log: Rev. 0 (2/25/2005) Major revision and expansion. Rev. 0.1 (3/12/2007) Updated Chapters 5, 6 and 9 to reflect change in default ring calibration factor used in HEDP dose calculation software. Factor changed from 1.5 to 2.0 beginning January 1, 2007. Pages on which changes were made are as follows: 5.23, 5.69, 5.78, 5.80, 5.82, 6.3, 6.5, 6.29, and 9.2. Rev 0.2 (8/28/2009) Updated Chapters 3, 5, 6, 8 and 9. Chapters 6 and 8 were significantly expanded. References in the Preface and Chapters 1, 2, 4, and 7 were updated to reflect updates to DOE documents. Approved by HPDAC on 6/2/2009. Rev 1.0 (1/1/2010) Major revision. Updated all chapters to reflect the Hanford site wide implementation on January 1, 2010 of new DOE requirements for occupational radiation protection. The new requirements are given in the June 8, 2007 amendment to 10 CFR 835 Occupational Radiation Protection (Federal Register, June 8, 2007. Title 10 Part 835. U.S., Code of Federal Regulations, Vol. 72, No. 110, 31904-31941). Revision 1.0 to the manual replaces ICRP 26 dosimetry concepts and terminology with ICRP 60 dosimetry concepts and terminology and replaces external dose conversion factors from ICRP 51 with those from ICRP 74 for use in measurement of operational quantities with dosimeters. Descriptions of dose algorithms and dosimeter response characteristics, and field performance were updated to reflect changes in the neutron quality factors used in the measurement of operational quantities.

  4. Excellent activity and selectivity of Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3

    SciTech Connect (OSTI)

    Kwak, Ja Hun; Tonkyn, Russell G.; Kim, Do Heui; Szanyi, Janos; Peden, Charles HF

    2010-10-21

    Superior activity and selectivity of a Cu ion-exchanged SSZ-13 zeolite in the selective catalytic reduction (SCR) of NOx with NH3 were observed, in comparison to Cu-beta and Cu-ZSM-5 zeolites. Cu-SSZ-13 was not only more active in the NOx SCR reaction over the entire temperature range studied (up to 550 C), but also more selective toward nitrogen formation, resulting in significantly lower amounts of NOx by-products (i.e., NO2 and N2O) than the other two zeolites. In addition, Cu-SSZ-13 demonstrated the highest activity and N2 formation selectivity in the oxidation of NH3. The results of this study strongly suggest that Cu-SSZ-13 is a promising candidate as a catalyst for NOx SCR with great potential in after-treatment systems for either mobile or stationary sources.

  5. RELAP5 assessment using semiscale SBLOCA test S-NH-1. International Agreement Report

    SciTech Connect (OSTI)

    Lee, E.J.; Chung, B.D.; Kim, H.J.

    1993-06-01

    2-inch cold leg break test S-NH-1, conducted at the 1/1705 volume scaled facility Semiscale was analyzed using RELAP5/MOD2 Cycle 36.04 and MOD3 Version 5m5. Loss of HPIS was assumed, and reactor trip occurred on a low PZR pressure signal (13.1 MPa), and pumps began an unpowered coastdown on SI signal (12.5 MPa). The system was recovered by opening ADV`s when the PCT became higher than 811 K. Accumulator was finally injected into the system when the primary system pressure was less than 4.0 MPa. The experiment was terminated when the pressure reached the LPIS actuation set point RELAP5/MOD2 analysis demonstrated its capability to predict, with a sufficient accuracy, the main phenomena occurring in the depressurization transient, both from a qualitative and quantitative points of view. Nevertheless, several differences were noted regarding the break flow rate and inventory distribution due to deficiencies in two-phase choked flow model, horizontal stratification interfacial drag, and a CCFL model. The main reason for the core to remain nearly fully covered with the liquid was the under-prediction of the break flow by the code. Several sensitivity calculations were tried using the MOD2 to improve the results by using the different options of break flow modeling (downward, homogeneous, and area increase). The break area compensating concept based on ``the integrated break flow matching`` gave the best results than downward junction and homogeneous options. And the MOD3 showed improvement in predicting a CCFL in SG and a heatup in the core.

  6. Study of NH stretching vibrations in small ammonia clusters by infrared spectroscopy in He droplets and ab initio calculations

    SciTech Connect (OSTI)

    Slipchenko, Mikhail N.; Sartakov, Boris G.; Vilesov, Andrey F.; Xantheas, Sotiris S.

    2007-08-09

    Infrared spectra of the NH stretching vibrations of (NH3)n clusters (n=2-4) have been obtained using the helium droplet isolation technique and first principles electronic structure anharmonic calculations. The measured spectra exhibit well-resolved bands, which have been assigned to the ?1, ?3, and 2?4 modes of the ammonia fragments in the clusters. The formation of a hydrogen bond in ammonia dimers leads to an increase of the infrared intensity by about a factor of four. In the larger clusters the infrared intensity per hydrogen bond is close to the one for dimers and approaches the value in the NH3 crystal. The intensity of the 2?4 overtone band in the trimer and tetramer increases by a factor of 10 relative to that in the monomer and dimer, and is comparable to the intensity of the ?1 and ?3 fundamental bands in larger clusters. This indicates the onset of the strong anharmonic coupling of the 2?4 and ?1 modes in larger clusters. The experimental assignments are compared to the ones obtained from first principles electronic structure anharmonic calculations for the dimer and trimer clusters. The anharmonic calculations were performed at the Mller-Plesset (MP2) level of electronic structure theory and were based on a second-order perturbative evaluation of rovibrational parameters and their effects on the vibrational spectra and average structures. In general there is excellent (<20 cm-1) agreement between the experimentally measured band origins for the N-H stretching frequencies and the calculated anharmonic vibrational frequencies. However, the calculations were found to overestimate the infrared intensities in clusters by about a factor of four. This work was supported by the Office of Basic Energy Sciences of the Department of Energy, in part by the Chemical Sciences program and in part by the Engineering and Geosciences Division. The Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy.

  7. High-temperature phase transformation and topochemical nature in ferroelastic (NH{sub 4}){sub 2}SO{sub 4}

    SciTech Connect (OSTI)

    Lee, Kwang-Sei; Oh, In-Hwan; Ko, Jae-Hyeon

    2014-04-01

    The electrical conductivity of ferroelastic ammonium sulfate (NH{sub 4}){sub 2}SO{sub 4} revealed an anomaly at around 130 C (=403 K, T{sub P}) on heating with large and irreversible thermal hysteresis through thermal cycle. Ferroelastic domain walls and surface morphology of (NH{sub 4}){sub 2}SO{sub 4} were investigated by hot-stage polarizing microscopy. Structural phase transition from an orthorhombic ferroelastic phase to a hexagonal paraelastic phase was not identified at T{sub P} upon heating. On further heating above T{sub P}, microscopic spots appeared and grew on the crystal surface, suggesting that the high-temperature anomaly at T{sub P} was an indication of an onset of thermal decomposition controlled by topochemical factors. The increase of electrical conductivity above T{sub P} was attributed to proton migration. - Graphical abstract: Surface morphology of the (100) face of (NH{sub 4}){sub 2}SO{sub 4} on heating, showing chemical reaction at the surface. - Highlights: We investigate the high-temperature phase transformation of ammonium sulfate. The increasing conductivity upon heating is attributed to proton migration. Structural phase transition from orthorhombic to hexagonal phase is not confirmed. High-temperature anomaly is related to an onset of thermal decomposition. The nature of the high-temperature anomaly is topochemical controlled by defects.

  8. Bridging the Causeway: A Center for Healthcare Policy and Research Symposium

    E-Print Network [OSTI]

    Carmichael, Owen

    TN MS AL GA FL SC VA WV OH MI NY PA MD DE NJ CT RI MA ME VT NH AK HI FY06 CTSA Grantees (12) FY07 CTSA Grantees (12) #12;NIH and Institutions: Working together as a National Consortium Informatics

  9. Time-Resolved XAFS Spectroscopic Studies of B-H and N-H Oxidative Addition to Transition Metal Catalysts Relevant to Hydrogen Storage

    SciTech Connect (OSTI)

    Bitterwolf, Thomas E.

    2014-12-09

    Successful catalytic dehydrogenation of aminoborane, H3NBH3, prompted questions as to the potential role of N-H oxidative addition in the mechanisms of these processes. N-H oxidative addition reactions are rare, and in all cases appear to involve initial dative bonding to the metal by the amine lone pairs followed by transfer of a proton to the basic metal. Aminoborane and its trimethylborane derivative block this mechanism and, in principle, should permit authentic N-H oxidative attrition to occur. Extensive experimental work failed to confirm this hypothesis. In all cases either B-H complexation or oxidative addition of solvent C-H bonds dominate the chemistry.

  10. A Pyrrolyl-based Triazolophane: A Macrocyclic Receptor With CH and NH Donor Groups That Exhibits a Preference for Pyrophosphate Anions

    SciTech Connect (OSTI)

    Sessler, Jonathan L.; Cia, Jiajia; Gong, Han-Yuan; Yang, Xiauping; Arambula, Jonathan F.; Hay, Benjamin

    2010-01-01

    A pyrrolyl-based triazolophane, incorporating CH and NH donor groups, acts as a receptor for the pyrophosphate anion in chloroform solution. It shows selectivity for this trianion, followed by HSO{sub 4}{sup -} > H{sub 2}PO{sub 4}{sup -} > Cl{sup -} > Br{sup -} (all as the corresponding tetrabutylammonium salts), with NH-anion interactions being more important than CH-anion interactions. In the solid state, the receptor binds the pyrophosphate anion in a clip-like slot via NH and CH hydrogen bonds.

  11. Characterization of Cu-SSZ-13 NH3 SCR Catalysts: an in situ FTIR Study

    SciTech Connect (OSTI)

    Szanyi, Janos; Kwak, Ja Hun; Zhu, Haiyang; Peden, Charles HF

    2013-01-23

    The adsorption of CO and NO over Cu-SSZ-13 zeolite catalysts, highly active in the selective catalytic reduction of NOx with NH3, was investigated by FTIR spectroscopy, and the results obtained were compared to those collected from other Cu-ion exchanged zeolites (Y,FAU and ZSM-5). At low CO pressures at room temperature (295 K) CO form monocarbonyls exclusively on the Cu+ ions, while in the presence of gas phase CO dicarbonyls on Cu+ and adsorbed CO on Cu2+ centers form, as well. At low (cryogenic) sample temperatures tricarbonyl formation on Cu+ sites was also observed. The adsorption of NO produces IR bands that can be assigned to nitrosyls bound to both Cu+ and Cu2+ centers, and NO+ species located in charge compensating cationic positions of the chabasite framework. On the reduced Cu-SSZ-13 samples the formation of N2O was also detected. The assignment of the adsorbed NOx species was aided by adsorption experiments with isotopically labeled 15NO. The movement of Cu ions from the sterically hindered six member ring position to the more accessible cavity positions as a result of their interaction with adsorbates (NO and H2O) was clearly evidenced. Comparisons of the spectroscopy data obtained in the static transmission IR system to those collected in the flow-through diffuse reflectance cell points out that care must be taken when conclusions are drawn about the adsorptive and reactive properties of metal cation centers based on a set of data collected under well defined, specific experimental conditions. Financial support was provided by the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program. This work was performed in the Environmental Molecular Sciences Laboratory (EMSL) at the Pacific Northwest National Laboratory (PNNL). The EMSL is a national scientific user facility supported by the US DOE, Office of Biological and Environmental Research. PNNL is a multi-program national laboratory operated for the US DOE by Battelle.

  12. Synthesis of the Long-Sought Unsubstituted Aminodiboranate Na(H3B-NH2-BH3) and Its N-Alkyl Analogs

    E-Print Network [OSTI]

    Girolami, Gregory S.

    storage materials.1-9 For example, ammonia borane, NH3 BH3, has an especially high gravimetric hydrogen as hydrogen storage materials.15-18 In a different context, metal complexes of amino- and amidoboranes can

  13. Realistic simulation of reduced-dose CT with noise modeling and sinogram synthesis using DICOM CT images

    SciTech Connect (OSTI)

    Won Kim, Chang; Kim, Jong Hyo

    2014-01-15

    Purpose: Reducing the patient dose while maintaining the diagnostic image quality during CT exams is the subject of a growing number of studies, in which simulations of reduced-dose CT with patient data have been used as an effective technique when exploring the potential of various dose reduction techniques. Difficulties in accessing raw sinogram data, however, have restricted the use of this technique to a limited number of institutions. Here, we present a novel reduced-dose CT simulation technique which provides realistic low-dose images without the requirement of raw sinogram data. Methods: Two key characteristics of CT systems, the noise equivalent quanta (NEQ) and the algorithmic modulation transfer function (MTF), were measured for various combinations of object attenuation and tube currents by analyzing the noise power spectrum (NPS) of CT images obtained with a set of phantoms. Those measurements were used to develop a comprehensive CT noise model covering the reduced x-ray photon flux, object attenuation, system noise, and bow-tie filter, which was then employed to generate a simulated noise sinogram for the reduced-dose condition with the use of a synthetic sinogram generated from a reference CT image. The simulated noise sinogram was filtered with the algorithmic MTF and back-projected to create a noise CT image, which was then added to the reference CT image, finally providing a simulated reduced-dose CT image. The simulation performance was evaluated in terms of the degree of NPS similarity, the noise magnitude, the bow-tie filter effect, and the streak noise pattern at photon starvation sites with the set of phantom images. Results: The simulation results showed good agreement with actual low-dose CT images in terms of their visual appearance and in a quantitative evaluation test. The magnitude and shape of the NPS curves of the simulated low-dose images agreed well with those of real low-dose images, showing discrepancies of less than +/?3.2% in terms of the noise power at the peak height and +/?1.2% in terms of the spatial frequency at the peak height. The magnitudes of the noise measured for 12 different combinations the phantom size, tube current, and reconstruction kernel for the simulated and real low-dose images were very similar, with differences of 0.1 to 4.7%. Thep value for a statistical testing of the difference in the noise magnitude ranged from 0.99 to 0.11, showing that there was no difference statistically between the noise magnitudes of the real and simulated low-dose images using our method. The strength and pattern of the streak noise in an anthropomorphic phantom was also consistent with expectations. Conclusions: A novel reduced-dose CT simulation technique was developed which uses only CT images while not requiring raw sinogram data. Our method can provide realistic simulation results under reduced-dose conditions both in terms of the noise magnitude and the textual appearance. This technique has the potential to promote clinical research for patient dose reductions.

  14. MA092 Geometria plana e analitica Comprimento da circunfer^encia -Area do circulo

    E-Print Network [OSTI]

    Gomes, Francisco A. M.

    MA092 ­ Geometria plana e anal´itica Comprimento da circunfer^encia - ´Area do c´irculo Francisco A) 51.758 voltas Francisco A. M. Gomes (UNICAMP - IMECC)MA092 ­ Geometria plana e anal´itica Setembro de´itica Setembro de 2014 5 / 14 ´Area do c´irculo C´irculo ´Area A ´area de um c´irculo de raio R ´e dada por AC

  15. Roadmap to MaRIE January 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIERoadmap to MaRIE

  16. A Compact Torus Fusion Reactor Utilizing a Continuously Generated Strings of CT's. The CT String Reactor, CTSR.

    SciTech Connect (OSTI)

    Hartman, C W; Reisman, D B; McLean, H S; Thomas, J

    2007-05-30

    A fusion reactor is described in which a moving string of mutually repelling compact toruses (alternating helicity, unidirectional Btheta) is generated by repetitive injection using a magnetized coaxial gun driven by continuous gun current with alternating poloidal field. An injected CT relaxes to a minimum magnetic energy equilibrium, moves into a compression cone, and enters a conducting cylinder where the plasma is heated to fusion-producing temperature. The CT then passes into a blanketed region where fusion energy is produced and, on emergence from the fusion region, the CT undergoes controlled expansion in an exit cone where an alternating poloidal field opens the flux surfaces to directly recover the CT magnetic energy as current which is returned to the formation gun. The CT String Reactor (CTSTR) reactor satisfies all the necessary MHD stability requirements and is based on extrapolation of experimentally achieved formation, stability, and plasma confinement. It is supported by extensive 2D, MHD calculations. CTSTR employs minimal external fields supplied by normal conductors, and can produce high fusion power density with uniform wall loading. The geometric simplicity of CTSTR acts to minimize initial and maintenance costs, including periodic replacement of the reactor first wall.

  17. [NH{sub 3}(CH{sub 2}){sub 2}NH{sub 3}][Co(SO{sub 4}){sub 2}(H{sub 2}O){sub 4}]: Chemical preparation, crystal structure, thermal decomposition and magnetic properties

    SciTech Connect (OSTI)

    Rekik, Walid; Naili, Houcine; Mhiri, Tahar [Laboratoire de l'Etat Solide, Departement de Chimie, Faculte des Sciences de Sfax, BP 802, 3018 Sfax (Tunisia); Bataille, Thierry [Sciences Chimiques de Rennes (CNRS, UMR 6226), Groupe Materiaux Inorganiques: Chimie Douce et Reactivite, Universite de Rennes I, Avenue du General Leclerc, 35042 Rennes Cedex (France)], E-mail: thierry.bataille@univ-rennes1.fr

    2008-10-02

    Cobalt ethylenediammonium bis(sulfate) tetrahydrate, [NH{sub 3}(CH{sub 2}){sub 2}NH{sub 3}][Co(SO{sub 4}){sub 2}(H{sub 2}O){sub 4}], has been synthesised by slow evaporation at room temperature. It crystallises in the triclinic system, space group P1-bar, with the unit cell parameters: a = 6.8033(2), b 7.0705(2), c = 7.2192(3) A, {alpha} = 74.909(2){sup o}, {beta} = 72.291(2){sup o}, {gamma} = 79.167(2){sup o}, Z = 1 and V = 317.16(2) A{sup 3}. The Co(II) atom is octahedrally coordinated by four water molecules and two sulfate tetrahedra leading to trimeric units [Co(SO{sub 4}){sub 2}(H{sub 2}O){sub 4}]. These units are linked to each other and to the ethylenediammonium cations through OW-H...O and N-H...O hydrogen bonds, respectively. The zero-dimensional structure is described as an alternation between cationic and anionic layers along the crystallographic b-axis. The dehydration of the precursor proceeds through three stages leading to crystalline intermediary hydrate phases and an anhydrous compound. The magnetic measurements show that the title compound is predominantly paramagnetic with weak antiferromagnetic interactions.

  18. Automatic CT simulation optimization for radiation therapy: A general strategy

    SciTech Connect (OSTI)

    Li, Hua, E-mail: huli@radonc.wustl.edu; Chen, Hsin-Chen; Tan, Jun; Gay, Hiram; Michalski, Jeff M.; Mutic, Sasa [Department of Radiation Oncology, Washington University, St. Louis, Missouri 63110 (United States)] [Department of Radiation Oncology, Washington University, St. Louis, Missouri 63110 (United States); Yu, Lifeng [Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905 (United States)] [Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905 (United States); Anastasio, Mark A. [Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63110 (United States)] [Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63110 (United States); Low, Daniel A. [Department of Radiation Oncology, University of California Los Angeles, Los Angeles, California 90095 (United States)] [Department of Radiation Oncology, University of California Los Angeles, Los Angeles, California 90095 (United States)

    2014-03-15

    Purpose: In radiation therapy, x-ray computed tomography (CT) simulation protocol specifications should be driven by the treatment planning requirements in lieu of duplicating diagnostic CT screening protocols. The purpose of this study was to develop a general strategy that allows for automatically, prospectively, and objectively determining the optimal patient-specific CT simulation protocols based on radiation-therapy goals, namely, maintenance of contouring quality and integrity while minimizing patient CT simulation dose. Methods: The authors proposed a general prediction strategy that provides automatic optimal CT simulation protocol selection as a function of patient size and treatment planning task. The optimal protocol is the one that delivers the minimum dose required to provide a CT simulation scan that yields accurate contours. Accurate treatment plans depend on accurate contours in order to conform the dose to actual tumor and normal organ positions. An image quality index, defined to characterize how simulation scan quality affects contour delineation, was developed and used to benchmark the contouring accuracy and treatment plan quality within the predication strategy. A clinical workflow was developed to select the optimal CT simulation protocols incorporating patient size, target delineation, and radiation dose efficiency. An experimental study using an anthropomorphic pelvis phantom with added-bolus layers was used to demonstrate how the proposed prediction strategy could be implemented and how the optimal CT simulation protocols could be selected for prostate cancer patients based on patient size and treatment planning task. Clinical IMRT prostate treatment plans for seven CT scans with varied image quality indices were separately optimized and compared to verify the trace of target and organ dosimetry coverage. Results: Based on the phantom study, the optimal image quality index for accurate manual prostate contouring was 4.4. The optimal tube potentials for patient sizes of 38, 43, 48, 53, and 58 cm were 120, 140, 140, 140, and 140 kVp, respectively, and the corresponding minimum CTDIvol for achieving the optimal image quality index 4.4 were 9.8, 32.2, 100.9, 241.4, and 274.1 mGy, respectively. For patients with lateral sizes of 4358 cm, 120-kVp scan protocols yielded up to 165% greater radiation dose relative to 140-kVp protocols, and 140-kVp protocols always yielded a greater image quality index compared to the same dose-level 120-kVp protocols. The trace of target and organ dosimetry coverage and the ? passing rates of seven IMRT dose distribution pairs indicated the feasibility of the proposed image quality index for the predication strategy. Conclusions: A general strategy to predict the optimal CT simulation protocols in a flexible and quantitative way was developed that takes into account patient size, treatment planning task, and radiation dose. The experimental study indicated that the optimal CT simulation protocol and the corresponding radiation dose varied significantly for different patient sizes, contouring accuracy, and radiation treatment planning tasks.

  19. Simultaneous Detection and Registration for Ileo-Cecal Valve Detection in 3D CT Colonography

    E-Print Network [OSTI]

    Barbu, Adrian

    Simultaneous Detection and Registration for Ileo-Cecal Valve Detection in 3D CT Colonography Le Lu1-Cecal Valve (ICV) detection in both clean and tagged 3D CT colonography scans. Our final ICV detection system

  20. Test of 3D CT reconstructions by EM + TV algorithm from undersampled data

    SciTech Connect (OSTI)

    Evseev, Ivan; Ahmann, Francielle; Silva, Hamilton P. da

    2013-05-06

    Computerized tomography (CT) plays an important role in medical imaging for diagnosis and therapy. However, CT imaging is connected with ionization radiation exposure of patients. Therefore, the dose reduction is an essential issue in CT. In 2011, the Expectation Maximization and Total Variation Based Model for CT Reconstruction (EM+TV) was proposed. This method can reconstruct a better image using less CT projections in comparison with the usual filtered back projection (FBP) technique. Thus, it could significantly reduce the overall dose of radiation in CT. This work reports the results of an independent numerical simulation for cone beam CT geometry with alternative virtual phantoms. As in the original report, the 3D CT images of 128 Multiplication-Sign 128 Multiplication-Sign 128 virtual phantoms were reconstructed. It was not possible to implement phantoms with lager dimensions because of the slowness of code execution even by the CORE i7 CPU.

  1. Nanocrystals for Solar Energy MaRIE--A Facility in the Making

    E-Print Network [OSTI]

    Nanocrystals for Solar Energy MaRIE--A Facility in the Making At the Chemical Movies 1663 LOS Mexico, Los Alamos National Laboratory was founded in 1943 to build the first atomic bomb. It remains Crystals in Solution A NEXT STEP FOR SOLAR SPOTLIGHT 28 Walking Ardi's Ground THE GEOLOGIST BEHIND THE 2009

  2. MA 266 Exam 2 Study Guide Exam 2 will cover material from ...

    E-Print Network [OSTI]

    Eddie

    2015-07-10

    MA 266 Exam 2 Study Guide. Exam 2 will cover material from lessons 11-20. This is sections 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8,. 4.1, 4.2, 4.3, and 6.1 in the textbook.

  3. OVERVIEW OF THE SDSS-IV MaNGA SURVEY: MAPPING NEARBY GALAXIES...

    Office of Scientific and Technical Information (OSTI)

    2000. With a typical integration time of 3 hr, MaNGA reaches a target r-band signal-to-noise ratio of 4-8 (sup -1 per 2'' fiber) at 23 AB mag arcsecsup -2, which is typical...

  4. MA 153 - Quiz 12 (?5 minutes) Solution Statistics (out of 10 ...

    E-Print Network [OSTI]

    2011-10-17

    MA 153 - Quiz 12 (?5 minutes). Solution. Statistics (out of 10): Section. 36 42. Average 8.4 8.4. Max. 10 10. Min. 4. 4. 1. Let A(1,0) and B(4,?4). (a) (2 points) Find...

  5. Anchorages For FRPby M.A. Erki and S.H. Rizkalla ommercially available fiber-

    E-Print Network [OSTI]

    , and describes the products available commercially. Fiber reinforced plastic (FRP) rein- forcement has already-tensioning and post-tensioning. Wedge-type an- chorages were recently introduced for carbon and aramid fiber tendonsAnchorages For FRPby M.A. Erki and S.H. Rizkalla C ommercially available fiber- based reinforcement

  6. Mechanical properties of nanocrystalline materials M.A. Meyers *, A. Mishra, D.J. Benson

    E-Print Network [OSTI]

    Meyers, Marc A.

    Mechanical properties of nanocrystalline materials M.A. Meyers *, A. Mishra, D.J. Benson Department of Mechanical and Aerospace Engineering, Materials Science and Engineering Program, Mail Code 0411, University; accepted for publication 1 August 2005 Abstract The mechanical properties of nanocrystalline materials

  7. MA Thesis Timeline Steps in thesis process Fall Graduation Spring Graduation

    E-Print Network [OSTI]

    MA Thesis Timeline Steps in thesis process Fall Graduation Spring Graduation During the semester prior to the one in which you hope to defend the thesis and graduate: Locate First Reader Obtain April 1 October 15 Prospectus Write and submit the thesis prospectus to first reader by (Consider

  8. Relationship between Compost Stability and Extractable Organic Carbon L. Wu and L. Q. Ma*

    E-Print Network [OSTI]

    Ma, Lena

    Relationship between Compost Stability and Extractable Organic Carbon L. Wu and L. Q. Ma* ABSTRACT to the factEstablishing a simple yet reliable compost stability test is essential that NaOH-extractable organic carbon (OC) containsfor a better compost quality control and utilization efficiency. The objective

  9. Primitive Os and 2316 Ma age for marine shale: implications for Paleoproterozoic glacial events and

    E-Print Network [OSTI]

    Bekker, Andrey

    Primitive Os and 2316 Ma age for marine shale: implications for Paleoproterozoic glacial events from carbonaceous shale that straddles the boundary between the Rooihoogte and Timeball Hill formations shales, so that their subsequent exposure and weathering was unable to provide a significant amount

  10. En quoi Turing a-t-il chang ma vie de chercheur ?

    E-Print Network [OSTI]

    van Tiggelen, Bart

    1912-2012 ALAN TURING En quoi Turing a-t-il chang ma vie de chercheur ? PIERRE LESCANNE (LIP, CNRS scientifique gnial, prolifique et polyvalent. Que se serait-il pass alors ? 1Les machines computer d'Alan Turing, Bulletin de SPECIF n63 (avril 2010) #12;

  11. Scalable Storage Scheme from Forward Key Rotation Chunbo Ma1,2

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Scalable Storage Scheme from Forward Key Rotation Chunbo Ma1,2 , Jun Ao3 , and Jianhua Li1 1 School@263.net Abstract. Kallahalla et al. presented a RSA-based Forward Key Rotation mechanism in secure storage present a Forward Key Rotation storage scheme based on discrete logarithm and discuss its security

  12. Characterization and In-Situ Ion-Irradiation of MA957 ODS Steel Djamel Kaoumi1

    E-Print Network [OSTI]

    Motta, Arthur T.

    Characterization and In-Situ Ion-Irradiation of MA957 ODS Steel Djamel Kaoumi1 , Arthur Motta1 Laboratory, Argonne, IL 060493, USA INTRODUCTION Oxide dispersion strengthened (ODS) Ferritic/Martensitic steels produced by mechanical alloying with Y2O3 particles are considered as possible cladding materials

  13. BBTR: an unstructured triangular mesh generator Andrea M.A. Barbera, Stefano Berrone

    E-Print Network [OSTI]

    Ceragioli, Francesca

    BBTR: an unstructured triangular mesh generator Andrea M.A. Barbera, Stefano Berrone Abstract In this paper we give a detailed description of the use of a MatlabR triangular mesh generator called BBTR produced by the mesh generator allow to set general boundary conditions. The code BBTR results

  14. New compact hohlraum configuration research at the 1.7 MA Z-pinch generator

    SciTech Connect (OSTI)

    Kantsyrev, V. L. Shrestha, I. K.; Esaulov, A. A.; Safronova, A. S.; Shlyaptseva, V. V.; Osborne, G. C.; Astanovitsky, A. L.; Weller, M. E.; Stafford, A.; Schultz, K. A.; Cooper, M. C.; Chuvatin, A. S.; Rudakov, L. I.; Velikovich, A. L.; Cuneo, M. E.; Jones, B.; Vesey, R. A.

    2014-12-15

    A new compact Z-pinch x-ray hohlraum design with parallel-driven x-ray sources was experimentally demonstrated in a full configuration with a central target and tailored shine shields (to provide a symmetric temperature distribution on the target) at the 1.7 MA Zebra generator. This presentation reports on the joint success of two independent lines of research. One of these was the development of new sources planar wire arrays (PWAs). PWAs turned out to be a prolific radiator. Another success was the drastic improvement in energy efficiency of pulsed-power systems, such as the Load Current Multiplier (LCM). The Zebra/LCM generator almost doubled the plasma load current to 1.7 MA. The two above-mentioned innovative approaches were used in combination to produce a new compact hohlraum design for ICF, as jointly proposed by SNL and UNR. Good agreement between simulated and measured radiation temperature of the central target is shown. Experimental comparison of PWAs with planar foil liners (PFL) - another viable alternative to wire array loads at multi-MA generators show promising data. Results of research at the University of Nevada Reno allowed for the study of hohlraum coupling physics at University-scale generators. The advantages of new hohlraum design applications for multi-MA facilities with W or Au double PWAs or PFL x-ray sources are discussed.

  15. mise jour: 09/12/2009 Rapport de ma mission au Pakistan

    E-Print Network [OSTI]

    Waldschmidt, Michel

    1 mise jour: 09/12/2009 Rapport de ma mission au Pakistan cole de recherche CIMPA du 22 au 28://www.lums.edu.pk/> pour y donner une confrence dans le cadre de French Science Tour in Pakistan Science Tour in Pakistan. Samedi 28 fvrier, 8 exposs organiss par Juergen Herzog permettant des

  16. mise jour: 30/03/2009 Rapport de ma mission au Pakistan

    E-Print Network [OSTI]

    Waldschmidt, Michel

    1 mise jour: 30/03/2009 Rapport de ma mission au Pakistan cole de recherche CIMPA du 22 au 28://www.lums.edu.pk/> pour y donner une confrence dans le cadre de French Science Tour in Pakistan Science Tour in Pakistan. Samedi 28 fvrier, 8 exposs organiss par Juergen Herzog permettant des

  17. The water-benzene interaction: Insight from electronic structure theories Jie Ma,1,2,3

    E-Print Network [OSTI]

    Alf, Dario

    The water-benzene interaction: Insight from electronic structure theories Jie Ma,1,2,3 Dario Alf,2 theories is challenging. Here we assess the ability of a variety of theories to describe a water-benzene- tween water and benzene. Water benzene is an interesting model system because it is a reasonably small

  18. Molecular motors and membrane trac in Dictyostelium Shuo Ma, Petra Fey, Rex L. Chisholm *

    E-Print Network [OSTI]

    Chisholm, Rex L.

    Review Molecular motors and membrane trac in Dictyostelium Shuo Ma, Petra Fey, Rex L. Chisholm on the cytoskeleton and their associated molecular motors. The myosin family of motors, especially the unconventional the early steps of phagocytosis. Members of the kinesin and dynein motor families, which mediate transport

  19. Journalism Concentration: Grady College MA Non-Thesis Program Planning Form

    E-Print Network [OSTI]

    Arnold, Jonathan

    Journalism Concentration: Grady College MA Non-Thesis Program Planning Form Student: Advisor Readings in Mass Communication JRMC 8350 ( ) Special Topics in Journalism JRMC 8025 ( ) Mass Media Law JRMC 8365 ( ) Media Economics JRMC 7355 ( ) Health and Medical Journalism JRMC 7356 ( ) Advanced Health

  20. Ma thse en 2 minutes Sophie Tourret quipe Capp Dir : N. Peltier, M. Echenim

    E-Print Network [OSTI]

    Quoi Comment Pourquoi Ma thse en 2 minutes Sophie Tourret quipe Capp Dir : N. Peltier, M 2 minutes Sophie Tourret quipe Capp Dir : N. Peltier, M. Echenim #12;Gnration d quipe Capp Dir : N. Peltier, M. Echenim #12;Gnration d'impliqus premiers en logique quationnelle

  1. AABBSSTTRRAACCTT MA, RUIQI. The Effect of In-Vehicle Automation and Reliability on Driver Situation

    E-Print Network [OSTI]

    Kaber, David B.

    AABBSSTTRRAACCTT MA, RUIQI. The Effect of In-Vehicle Automation and Reliability on Driver Situation by automation and in- vehicle device use. Specifically, this study investigated the implications of adaptive; investigate the effect of varying reliability of in-vehicle automation (navigation aids) on driver SA

  2. Institutions and Cross-border Mergers and Acquisitions (M&A) Value Creation

    E-Print Network [OSTI]

    Zhu, Hong

    2012-02-14

    little effect on cross-border M&A value creation. We therefore still do not understand the processes behind cross-border M&As. In this is dissertation I examine the main effects of host country regulatory, economic and physical infrastructure...

  3. Hybrid Process Algebra P.J.L. Cuijpers # M.A. Reniers

    E-Print Network [OSTI]

    Cuijpers, Pieter

    Hybrid Process Algebra P.J.L. Cuijpers # M.A. Reniers Eindhoven University of Technology (TU/e) Den Dolech 2 5600 MB Eindhoven, The Netherlands Abstract We develop an algebraic theory, called hybrid process algebra (HyPA), for the de scription and analysis of hybrid systems. HyPA is an extension

  4. Hybrid Process Algebra P.J.L. Cuijpers M.A. Reniers

    E-Print Network [OSTI]

    Cuijpers, Pieter

    Hybrid Process Algebra P.J.L. Cuijpers M.A. Reniers Eindhoven University of Technology (TU/e) Den Dolech 2 5600 MB Eindhoven, The Netherlands Abstract We develop an algebraic theory, called hybrid process algebra (HyPA), for the de- scription and analysis of hybrid systems. HyPA is an extension

  5. Nanocrystals for Solar Energy MaRIE--A Facility in the Making

    E-Print Network [OSTI]

    's efforts to minimize environmental impacts. The new Center for Advanced Solar Photophysics, led by Victor solar photovoltaics (solar panels) that are both cheaper and more efficient and therefore an affordableNanocrystals for Solar Energy MaRIE--A Facility in the Making At the Chemical Movies 1663 LOS

  6. WIND TURBINE SITING IN AN URBAN ENVIRONMENT: THE HULL, MA 660 KW TURBINE

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    1 WIND TURBINE SITING IN AN URBAN ENVIRONMENT: THE HULL, MA 660 KW TURBINE J. F. Manwell, J. G. Mc turbine at Windmill Point in Hull, Massachusetts represents a high point in the long history of wind, through the installation of a 40 kW Enertech machine in the 1980's to the installation of the new turbine

  7. Neural Modeling of Non-Linear Processes: Relevance of the Takens-Ma~ne Theorem

    E-Print Network [OSTI]

    Masulli, Francesco

    coupled to a 150 MW steam turbine. 1 Introduction The problem of controlling systems characterized by non to be managed (on a typical steam turbine they are about 576,000/hour). Moreover, so far, there are no availableNeural Modeling of Non-Linear Processes: Relevance of the Takens-Ma~ne Theorem Francesco Masulli

  8. Convexity and Fast Speech Extraction by Split Bregman Method , Wenye Ma2

    E-Print Network [OSTI]

    Ferguson, Thomas S.

    Convexity and Fast Speech Extraction by Split Bregman Method Meng Yu1 , Wenye Ma2 , Jack Xin1@math.uci.edu, sjo@math.ucla.edu Abstract A fast speech extraction (FSE) method is presented using con- vex noise in the output. In this paper, a new fast time domain speech extraction (FSE) method is proposed

  9. Accessing Absence Summary Reports New report available to managers of MaPS and Support Staff

    E-Print Network [OSTI]

    Calgary, University of

    Appendix C Accessing Absence Summary Reports New report available to managers of MaPS and Support Staff What is the new report? To further assist managers in their efforts to manage their workforce, an absence summary report is being made available to allow you to quickly look up sick leave and medical

  10. Walleye pollock (Theragra chalcogram-ma) and Pacific herring (Clupea pallasi)

    E-Print Network [OSTI]

    that inhabit the north- eastern Pacific Ocean rim. Both species are important components of marine bird, mammal482 Walleye pollock (Theragra chalcogram- ma) and Pacific herring (Clupea pallasi) are forage fish and Speckman, 1997;Anderson and Piatt,1999).Young- of-the-year (YOY) walleye pollock and YOY Pacific herring

  11. Company Name: Blue Cross Blue Shield of MA Web Site: www.bluecrossma.com

    E-Print Network [OSTI]

    New Hampshire, University of

    Company Name: Blue Cross Blue Shield of MA Web Site: www.bluecrossma.com Industry: Healthcare Brief Company Overview: Headquartered in Boston, Blue Cross Blue Shield of Massachusetts provides comprehensive-level position: Please visit www.bluecrossma.com/careers. With almost 3 million members, Blue Cross Blue Shield

  12. Proxy Key Re-encapsulation Mechanism for Group Communications Chunbo Ma and Jun Ao

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    - 1 - Proxy Key Re-encapsulation Mechanism for Group Communications Chunbo Ma and Jun Ao School. China machunbo@guet.edu.cn Abstract. Many practical applications use hybrid encryption mechanism to deal scheme is poor. The key encapsulation is a crucial part in hybrid encryption mechanism, which allows

  13. redMaGiC: Selecting Luminous Red Galaxies from the DES Science Verification Data

    E-Print Network [OSTI]

    Rozo, E; Abate, A; Bonnett, C; Crocce, M; Davis, C; Hoyle, B; Leistedt, B; Peiris, H V; Wechsler, R H; Abbott, T; Abdalla, F B; Banerji, M; Bauer, A H; Benoit-Lvy, A; Bernstein, G M; Bertin, E; Brooks, D; Buckley-Geer, E; Burke, D L; Capozzi, D; Rosell, A Carnero; Carollo, D; Kind, M Carrasco; Carretero, J; Castander, F J; Childress, M J; Cunha, C E; D'Andrea, C B; Davis, T; DePoy, D L; Desai, S; Diehl, H T; Dietrich, J P; Doel, P; Eifler, T F; Evrard, A E; Neto, A Fausti; Flaugher, B; Fosalba, P; Frieman, J; Gaztanaga, E; Gerdes, D W; Glazebrook, K; Gruen, D; Gruendl, R A; Honscheid, K; James, D J; Jarvis, M; Kim, A G; Kuehn, K; Kuropatkin, N; Lahav, O; Lidman, C; Lima, M; Maia, M A G; March, M; Martini, P; Melchior, P; Miller, C J; Miquel, R; Mohr, J J; Nichol, R C; Nord, B; O'Neill, C R; Ogando, R; Plazas, A A; Romer, A K; Roodman, A; Sako, M; Sanchez, E; Santiago, B; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, M E C; Thaler, J; Thomas, D; Uddin, S; Vikram, V; Walker, A R; Wester, W; Zhang, Y; da Costa, L N

    2015-01-01

    We introduce redMaGiC, an automated algorithm for selecting Luminous Red Galaxies (LRGs). The algorithm was specifically developed to minimize photometric redshift uncertainties in photometric large-scale structure studies. redMaGiC achieves this by self-training the color-cuts necessary to produce a luminosity-thresholded LRG sample of constant comoving density. We demonstrate that redMaGiC photozs are very nearly as accurate as the best machine-learning based methods, yet they require minimal spectroscopic training, do not suffer from extrapolation biases, and are very nearly Gaussian. We apply our algorithm to Dark Energy Survey (DES) Science Verification (SV) data to produce a redMaGiC catalog sampling the redshift range $z\\in[0.2,0.8]$. Our fiducial sample has a comoving space density of $10^{-3}\\ (h^{-1} Mpc)^{-3}$, and a median photoz bias ($z_{spec}-z_{photo}$) and scatter $(\\sigma_z/(1+z))$ of 0.005 and 0.017 respectively. The corresponding $5\\sigma$ outlier fraction is 1.4%. We also test our algorit...

  14. Job opening: Senior Software Engineer (Cambridge, MA) CellProfiler opensource software

    E-Print Network [OSTI]

    Carpenter, Anne E.

    Job opening: Senior Software Engineer (Cambridge, MA) CellProfiler opensource software Cell Platform) at the Broad Institute of Harvard and MIT has an opening for a highly motivated senior software functions from microscopy images. We seek a software engineer with a strong record of accomplishment

  15. Paleomagnetism of the southwestern U.S.A. recorded by 05 Ma igneous rocks

    E-Print Network [OSTI]

    Johnson, Catherine Louise

    Constable, Catherine L. Johnson, Anthony A. P. Koppers, Winter R. Miller, and Hubert Staudigel ScrippsPaleomagnetism of the southwestern U.S.A. recorded by 05 Ma igneous rocks Lisa Tauxe, Catherine. Constable, C. L. Johnson, A. A. P. Koppers, W. R. Miller, and H. Staudigel, Paleomagnetism

  16. Seismic Data Reconstruction via Matrix Yi Yang, Jianwei Ma and Stanley Osher

    E-Print Network [OSTI]

    Ferguson, Thomas S.

    1 Seismic Data Reconstruction via Matrix Completion Yi Yang, Jianwei Ma and Stanley Osher Abstract In seismic processing, one goal is to recover missing traces when the data is sparsely and incom- pletelyFit) are discussed in this paper. The seismic data can then be recovered by the conversion of the completed matrix

  17. Debris flows from small catchments of the Ma Ha Tuak Range, metropolitan Phoenix, Arizona

    E-Print Network [OSTI]

    Dorn, Ron

    Debris flows from small catchments of the Ma Ha Tuak Range, metropolitan Phoenix, Arizona Ronald I from tiny but steep mountain catchments throughout metropolitan Phoenix, Arizona, USA. Urban growth downtown Phoenix, was selected to determine the feasibility of using the varnish microlaminations (VML

  18. WSU's M.A. in aging studies equips students with the necessary skills to

    E-Print Network [OSTI]

    WSU's M.A. in aging studies equips students with the necessary skills to meet the growing needs of America's aging population. Graduates will be well equipped for a diverse range of career opportunities from aging research and counseling to employment in nursing facilities, assisted-living communities

  19. Health & Medical Journalism Concentration: Grady College MA Non-Thesis Program Planning Form

    E-Print Network [OSTI]

    Arnold, Jonathan

    Health & Medical Journalism Concentration: Grady College MA Non-Thesis Program Planning Form Methodology in Mass Communication 3. JRMC 7355 ( ) Health and Medical Journalism 4. JRMC 7356 ( ) Advanced Health and Medical Journalism Co-requisite for Concentration for students with limited undergraduate

  20. Prostate CT segmentation method based on nonrigid registration in ultrasound-guided CT-based HDR prostate brachytherapy

    SciTech Connect (OSTI)

    Yang, Xiaofeng Rossi, Peter; Ogunleye, Tomi; Marcus, David M.; Jani, Ashesh B.; Curran, Walter J.; Liu, Tian; Mao, Hui

    2014-11-01

    Purpose: The technological advances in real-time ultrasound image guidance for high-dose-rate (HDR) prostate brachytherapy have placed this treatment modality at the forefront of innovation in cancer radiotherapy. Prostate HDR treatment often involves placing the HDR catheters (needles) into the prostate gland under the transrectal ultrasound (TRUS) guidance, then generating a radiation treatment plan based on CT prostate images, and subsequently delivering high dose of radiation through these catheters. The main challenge for this HDR procedure is to accurately segment the prostate volume in the CT images for the radiation treatment planning. In this study, the authors propose a novel approach that integrates the prostate volume from 3D TRUS images into the treatment planning CT images to provide an accurate prostate delineation for prostate HDR treatment. Methods: The authors approach requires acquisition of 3D TRUS prostate images in the operating room right after the HDR catheters are inserted, which takes 13 min. These TRUS images are used to create prostate contours. The HDR catheters are reconstructed from the intraoperative TRUS and postoperative CT images, and subsequently used as landmarks for the TRUSCT image fusion. After TRUSCT fusion, the TRUS-based prostate volume is deformed to the CT images for treatment planning. This method was first validated with a prostate-phantom study. In addition, a pilot study of ten patients undergoing HDR prostate brachytherapy was conducted to test its clinical feasibility. The accuracy of their approach was assessed through the locations of three implanted fiducial (gold) markers, as well as T2-weighted MR prostate images of patients. Results: For the phantom study, the target registration error (TRE) of gold-markers was 0.41 0.11 mm. For the ten patients, the TRE of gold markers was 1.18 0.26 mm; the prostate volume difference between the authors approach and the MRI-based volume was 7.28% 0.86%, and the prostate volume Dice overlap coefficient was 91.89% 1.19%. Conclusions: The authors have developed a novel approach to improve prostate contour utilizing intraoperative TRUS-based prostate volume in the CT-based prostate HDR treatment planning, demonstrated its clinical feasibility, and validated its accuracy with MRIs. The proposed segmentation method would improve prostate delineations, enable accurate dose planning and treatment delivery, and potentially enhance the treatment outcome of prostate HDR brachytherapy.

  1. The EOS is a fundamental descrip5on of nuclear ma7er. For isospin asymmetric ma7er the symmetry energy term is of prime importance. The density dependence of the symmetry energy impacts

    E-Print Network [OSTI]

    de Souza, Romualdo T.

    of the asymmetry term in three sets of calcu- lations provides a contribution to the symmetry energy per nucleonThe EOS is a fundamental descrip5on of nuclear ma7er. For isospin asymmetric ma7er the symmetry energy term is of prime importance. The density dependence

  2. Slowing the Increase in the Population Dose Resulting from CT Scans D. J. Brenner

    E-Print Network [OSTI]

    Brenner, David Jonathan

    is by far in the patient's favor. Nevertheless, CT should operate under the ALARA (As Low As Reasonably

  3. Regeneration of field-spent activated carbon catalysts for low-temperature selective catalytic reduction of NOx with NH3

    SciTech Connect (OSTI)

    Jeon, Jong Ki; Kim, Hyeonjoo; Park, Young-Kwon; Peden, Charles HF; Kim, Do Heui

    2011-10-15

    In the process of producing liquid crystal displays (LCD), the emitted NOx is removed over an activated carbon catalyst by using selective catalytic reduction (SCR) with NH3 at low temperature. However, the catalyst rapidly deactivates primarily due to the deposition of boron discharged from the process onto the catalyst. Therefore, this study is aimed at developing an optimal regeneration process to remove boron from field-spent carbon catalysts. The spent carbon catalysts were regenerated by washing with a surfactant followed by drying and calcination. The physicochemical properties before and after the regeneration were investigated by using elemental analysis, TG/DTG (thermogravimetric/differential thermogravimetric) analysis, N2 adsorption-desorption and NH3 TPD (temperature programmed desorption). Spent carbon catalysts demonstrated a drastic decrease in DeNOx activity mainly due to heavy deposition of boron. Boron was accumulated to depths of about 50 {mu}m inside the granule surface of the activated carbons, as evidenced by cross-sectional SEM-EDX analysis. However, catalyst activity and surface area were significantly recovered by removing boron in the regeneration process, and the highest NOx conversions were obtained after washing with a non-ionic surfactant in H2O at 70 C, followed by treatment with N2 at 550 C.

  4. Observational results of a multi-telescope campaign in search of interstellar urea [(NH{sub 2}){sub 2}CO

    SciTech Connect (OSTI)

    Remijan, Anthony J.; Snyder, Lewis E.; Kuo, Hsin-Lun; Looney, Leslie W.; Friedel, Douglas N.; McGuire, Brett A.; Golubiatnikov, G. Yu; Lovas, Frank J.; Ilyushin, V. V.; Alekseev, E. A.; Dyubko, S. F.; McCall, Benjamin J.; Hollis, Jan M.

    2014-03-10

    In this paper, we present the results of an observational search for gas phase urea [(NH{sub 2}){sub 2}CO] observed toward the Sgr B2(N-LMH) region. We show data covering urea transitions from ?100 GHz to 250 GHz from five different observational facilities: the Berkeley-Illinois-Maryland-Association (BIMA) Array, the Combined Array for Research in Millimeter-wave Astronomy (CARMA), the NRAO 12 m telescope, the IRAM 30 m telescope, and the Swedish-ESO Submillimeter Telescope (SEST). The results show that the features ascribed to urea can be reproduced across the entire observed bandwidth and all facilities by best-fit column density, temperature, and source size parameters which vary by less than a factor of two between observations merely by adjusting for telescope-specific parameters. Interferometric observations show that the emission arising from these transitions is cospatial and compact, consistent with the derived source sizes and emission from a single species. Despite this evidence, the spectral complexity of both (NH{sub 2}){sub 2}CO and of Sgr B2(N) makes the definitive identification of this molecule challenging. We present observational spectra, laboratory data, and models, and discuss our results in the context of a possible molecular detection of urea.

  5. The San Francisco Consortium CT Host, CE Home

    E-Print Network [OSTI]

    Ovchinnikov, Sergei

    The San Francisco Consortium CT Host, CE Home me l r Student: Complete Sections 1 through 5. Print Campus Campus California College of Podiatric Medicine City College of San Francisco Cogswell College Golden Gate University Tuition Required Hastings College of the Law San Francisco State University

  6. CT Poison Control Center 2014 Video Contest Rules

    E-Print Network [OSTI]

    Kim, Duck O.

    CT Poison Control Center 2014 Video Contest Rules To Enter: 1) Record and upload a video to your an immediate family member who is an employee of the Connecticut Poison Control Center. Video Requirements: DO NOT HANDLE, INGEST OR USE ANY ACTUAL POISONOUS OR HAZARDOUSSUBSTANCES. IF YOU HAVE QUESTIONS ABOUT

  7. Collapsibility of Lung Volume by Paired Inspiratory and Expiratory CT

    E-Print Network [OSTI]

    Collapsibility of Lung Volume by Paired Inspiratory and Expiratory CT Scans: Correlations with Lung Function and Mean Lung Density Tsuneo Yamashiro, MD, Shin Matsuoka, MD, PhD, Brian J. Bartholmai, MD, Rau: To evaluate the relationship between measurements of lung volume (LV) on inspiratory/expiratory computed

  8. Targeted CT Screening for Lung Cancer using Absolute Risk Prediction

    E-Print Network [OSTI]

    Brent, Roger

    Targeted CT Screening for Lung Cancer using Absolute Risk Prediction Stephanie A. Kovalchik skovalch@rand.org FHCRC 2014 Risk Prediction Symposium June 11, 2014 1 #12;Outline Lung Cancer Epidemiology and Screening Screening Benefit and Absolute Risk Absolute Risk Model for Lung Cancer

  9. Soft Classification with Gaussian Mixture Model for Clinical Dual-Energy CT Reconstructions

    E-Print Network [OSTI]

    1 Soft Classification with Gaussian Mixture Model for Clinical Dual-Energy CT Reconstructions, and Ken D. Sauer, Member, IEEE Abstract--We study the distribution of the clinical dual-energy CT (DECT material separation. Index Terms--Computed tomography (CT), dual energy, sta- tistical method, Gaussian

  10. Fractional scan algorithms for low-dose perfusion CT Jiang Hsieha)

    E-Print Network [OSTI]

    Wang, Ge

    Fractional scan algorithms for low-dose perfusion CT Jiang Hsieha) GE Medical Systems, Milwaukee be reconstructed at a fraction of the nominal radiation dose. 2004 American Asso- ciation of Physicists to perform perfusion CT at a significantly reduced x-ray dose. One method to achieve low-dose CT is to reduce

  11. Automatic Lung Nodule Detection from Chest CT Data Using Geometrical Features: Initial Results

    E-Print Network [OSTI]

    Whelan, Paul F.

    Automatic Lung Nodule Detection from Chest CT Data Using Geometrical Features: Initial Results for automatic lung nodule detection from Chest CT data is proposed. The proposed system includes the methods of lung segmentation and nodule detection from CT data. The algorithm for lung segmentation consists

  12. Robust Segmentation of Challenging Lungs in CT using Multi-Stage Learning

    E-Print Network [OSTI]

    Robust Segmentation of Challenging Lungs in CT using Multi-Stage Learning and Level Set.Kevin Zhou1 Abstract Automatic segmentation of lung tissue in thoracic CT scans is useful for diagnosis and treatment planning of pulmonary diseases. Unlike healthy lung tissue that is easily identifiable in CT scans

  13. Augmenting CT Cardiac Roadmaps with Segmented Streaming Qi Duan a,b

    E-Print Network [OSTI]

    Augmenting CT Cardiac Roadmaps with Segmented Streaming Ultrasound Qi Duan a,b , Guy Shechter Static X-ray computed tomography (CT) volumes are often used as anatomic roadmaps during catheter. Augmenting these static CT roadmaps with segmented myocardial borders extracted from live ultrasound (US

  14. Effects of diagenesis on the Nd-isotopic composition of black shales from the 420 Ma Utica Shale Magnafacies

    E-Print Network [OSTI]

    Basu, Asish R.

    Effects of diagenesis on the Nd-isotopic composition of black shales from the 420 Ma Utica Shale Abstract The Utica black shales were deposited in the Taconic Foreland basin 420 Ma ago. The organic matter in these shales is of marine origin and the timing of deposition of these shales has been constrained

  15. Third-order gas-liquid phase transition and the nature of Andrews critical Tian Ma and Shouhong Wang

    E-Print Network [OSTI]

    Wang, Shouhong

    Third-order gas-liquid phase transition and the nature of Andrews critical point Tian Ma-order gas-liquid phase transition and the nature of Andrews critical point Tian Ma1 and Shouhong Wang2 1 is to study the nature of the Andrews critical point in the gas-liquid transition in a physical

  16. Quantitative cone-beam CT imaging in radiation therapy using planning CT as a prior: First patient studies

    SciTech Connect (OSTI)

    Niu Tianye; Al-Basheer, Ahmad; Zhu Lei [Nuclear and Radiological Engineering and Medical Physics Programs, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); Georgia Radiation Therapy Center, Department of Radiology, Georgia Health Sciences University, Augusta, Georgia 30912 (United States); Nuclear and Radiological Engineering and Medical Physics Programs, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)

    2012-04-15

    Purpose: Quantitative cone-beam CT (CBCT) imaging is on increasing demand for high-performance image guided radiation therapy (IGRT). However, the current CBCT has poor image qualities mainly due to scatter contamination. Its current clinical application is therefore limited to patient setup based on only bony structures. To improve CBCT imaging for quantitative use, we recently proposed a correction method using planning CT (pCT) as the prior knowledge. Promising phantom results have been obtained on a tabletop CBCT system, using a correction scheme with rigid registration and without iterations. More challenges arise in clinical implementations of our method, especially because patients have large organ deformation in different scans. In this paper, we propose an improved framework to extend our method from bench to bedside by including several new components. Methods: The basic principle of our correction algorithm is to estimate the primary signals of CBCT projections via forward projection on the pCT image, and then to obtain the low-frequency errors in CBCT raw projections by subtracting the estimated primary signals and low-pass filtering. We improve the algorithm by using deformable registration to minimize the geometry difference between the pCT and the CBCT images. Since the registration performance relies on the accuracy of the CBCT image, we design an optional iterative scheme to update the CBCT image used in the registration. Large correction errors result from the mismatched objects in the pCT and the CBCT scans. Another optional step of gas pocket and couch matching is added into the framework to reduce these effects. Results: The proposed method is evaluated on four prostate patients, of which two cases are presented in detail to investigate the method performance for a large variety of patient geometry in clinical practice. The first patient has small anatomical changes from the planning to the treatment room. Our algorithm works well even without the optional iterations and the gas pocket and couch matching. The image correction on the second patient is more challenging due to the effects of gas pockets and attenuating couch. The improved framework with all new components is used to fully evaluate the correction performance. The enhanced image quality has been evaluated using mean CT number and spatial nonuniformity (SNU) error as well as contrast improvement factor. If the pCT image is considered as the ground truth, on the four patients, the overall mean CT number error is reduced from over 300 HU to below 16 HU in the selected regions of interest (ROIs), and the SNU error is suppressed from over 18% to below 2%. The average soft-tissue contrast is improved by an average factor of 2.6. Conclusions: We further improve our pCT-based CBCT correction algorithm for clinical use. Superior correction performance has been demonstrated on four patient studies. By providing quantitative CBCT images, our approach significantly increases the accuracy of advanced CBCT-based clinical applications for IGRT.

  17. SciThur PM: Imaging 06: Canada's National Computed Tomography (CT) Survey

    SciTech Connect (OSTI)

    Wardlaw, GM; Martel, N; Blackler, W; Asselin, J-F

    2014-08-15

    The value of computed tomography (CT) in medical imaging is reflected in its' increased use and availability since the early 1990's; however, given CT's relatively larger exposures (vs. planar x-ray) greater care must be taken to ensure that CT procedures are optimised in terms of providing the smallest dose possible while maintaining sufficient diagnostic image quality. The development of CT Diagnostic Reference Levels (DRLs) supports this process. DRLs have been suggested/supported by international/national bodies since the early 1990's and widely adopted elsewhere, but not on a national basis in Canada. Essentially, CT DRLs provide guidance on what is considered good practice for common CT exams, but require a representative sample of CT examination data to make any recommendations. Canada's National CT Survey project, in collaboration with provincial/territorial authorities, has collected a large national sample of CT practice data for 7 common examinations (with associated clinical indications) of both adult and pediatric patients. Following completion of data entry into a common database, a survey summary report and recommendations will be made on CT DRLs from this data. It is hoped that these can then be used by local regions to promote CT practice optimisation and support any dose reduction initiatives.

  18. AMP-activated protein kinase phosphorylates CtBP1 and down-regulates its activity

    SciTech Connect (OSTI)

    Kim, Jae-Hwan; Choi, Soo-Youn; Kang, Byung-Hee; Lee, Soon-Min [National Creative Research Center for Epigenome Reprogramming Network, Departments of Biomedical Sciences and Biochemistry and Molecular Biology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-799 (Korea, Republic of)] [National Creative Research Center for Epigenome Reprogramming Network, Departments of Biomedical Sciences and Biochemistry and Molecular Biology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-799 (Korea, Republic of); Park, Hyung Soon; Kang, Gum-Yong; Bang, Joo Young [Center for Biomedical Mass Spectrometry, Diatech Korea Co., Ltd., Seoul (Korea, Republic of)] [Center for Biomedical Mass Spectrometry, Diatech Korea Co., Ltd., Seoul (Korea, Republic of); Cho, Eun-Jung [National Research Laboratory for Chromatin Dynamics, College of Pharmacy, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)] [National Research Laboratory for Chromatin Dynamics, College of Pharmacy, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Youn, Hong-Duk, E-mail: hdyoun@snu.ac.kr [National Creative Research Center for Epigenome Reprogramming Network, Departments of Biomedical Sciences and Biochemistry and Molecular Biology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-799 (Korea, Republic of) [National Creative Research Center for Epigenome Reprogramming Network, Departments of Biomedical Sciences and Biochemistry and Molecular Biology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-799 (Korea, Republic of); WCU Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence and Technology, Seoul National University, Seoul (Korea, Republic of)

    2013-02-01

    Highlights: ? AMPK phosphorylates CtBP1 on serine 158. ? AMPK-mediated phosphorylation of CtBP1 causes the ubiquitination and nuclear export of CtBP1. ? AMPK downregulates the CtBP1-mediated repression of Bax transcription. -- Abstract: CtBP is a transcriptional repressor which plays a significant role in the regulation of cell proliferation and tumor progression. It was reported that glucose withdrawal causes induction of Bax due to the dissociation of CtBP from the Bax promoter. However, the precise mechanism involved in the regulation of CtBP still remains unclear. In this study, we found that an activated AMP-activated protein kinase (AMPK) phosphorylates CtBP1 on Ser-158 upon metabolic stresses. Moreover, AMPK-mediated phosphorylation of CtBP1 (S158) attenuates the repressive function of CtBP1. We also confirmed that triggering activation of AMPK by various factors resulted in an increase of Bax gene expression. These findings provide connections of AMPK with CtBP1-mediated regulation of Bax expression for cell death under metabolic stresses.

  19. Unusual defect physics in CH{sub 3}NH{sub 3}PbI{sub 3} perovskite solar cell absorber

    SciTech Connect (OSTI)

    Yin, Wan-Jian Shi, Tingting; Yan, Yanfa

    2014-02-10

    Thin-film solar cells based on Methylammonium triiodideplumbate (CH{sub 3}NH{sub 3}PbI{sub 3}) halide perovskites have recently shown remarkable performance. First-principle calculations show that CH{sub 3}NH{sub 3}PbI{sub 3} has unusual defect physics: (i) Different from common p-type thin-film solar cell absorbers, it exhibits flexible conductivity from good p-type, intrinsic to good n-type depending on the growth conditions; (ii) Dominant intrinsic defects create only shallow levels, which partially explain the long electron-hole diffusion length and high open-circuit voltage in solar cell. The unusual defect properties can be attributed to the strong Pb lone-pair s orbital and I p orbital antibonding coupling and the high ionicity of CH{sub 3}NH{sub 3}PbI{sub 3}.

  20. 4D Density Determination of NH Radicals in an MSE Microplasma Combining Planar Laser Induced Fluorescence and Cavity Ring-Down Spectroscopy

    SciTech Connect (OSTI)

    Visser, Martin; Schenk, Andreas; Gericke, Karl-Heinz [Technische Universitaet Braunschweig, Institut fuer Physikalische und Theoretische Chemie Hans-Sommer-Str. 10, 38106 Braunschweig (Germany)

    2010-10-13

    An application of microplasmas is surface modification under mild conditions and of small, well defined areas. For this, an understanding of the plasma composition is of importance. First results of our work on the production and detection of NH radicals in a capacitively coupled radio frequency (RF) microplasma are presented. A microstructured comb electrode was used to generate a glow discharge in a hydrogen/nitrogen gas mixture by applying 13.56 MHz RF voltage. The techniques of planar laser induced fluorescence (PLIF) and cavity ring-down spectroscopy (CRDS) are used for space and time resolved, quantitative detection of the NH radical in the plasma. The rotational temperature was determined to be 820 K and, the density 5.1x10{sup 12} cm{sup 3}. Also, time dependent behaviour of the NH production was observed.

  1. MA 48100

    E-Print Network [OSTI]

    $author.value

    Course Materials. Section, Type, Title, Author. ALL, Other, Course materials. Important Notes. ADA policies: please see our ADA Information page for more...

  2. Tammy Ma

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    why she loves science, her belief in giving back, and advice for younger scientists. Motivation and work ethic My mother, unfortunately, didn't get the chance to finish high school...

  3. MA 15300

    E-Print Network [OSTI]

    $author.value

    ... IN 47907 USA, 765-494-4600. An equal access/equal opportunity university. Accessibility issues? Contact the Web Editor (webeditor@math.purdue.edu).

  4. MA 26500

    E-Print Network [OSTI]

    $author.value

    College of Science Department of Mathematics. Search. About Us Giving to Mathematics About Us Diversity Statement Job Listings Newsletter People.

  5. MA 13700

    E-Print Network [OSTI]

    Course Coordinator: Renee Roames; ph: 494-1929; office: MATH 808; email: rroames@purdue.edu; Instructor: Gabe Smith; email: smith522@math.purdue.

  6. MA 161

    E-Print Network [OSTI]

    $author.value

    Math Help Room University Exam Schedules University Course Catalog University Course Schedule Undergraduate Advisors Undergraduate Plans of

  7. MA 166

    E-Print Network [OSTI]

    Projection Booth. Video Lecture Cabinet. 10' Chalkboard. Audio Recording Capabilities. Voice Ampli?cation. Wheelchair seaiing (1). , theater lighting stage:.

  8. MA 16020

    E-Print Network [OSTI]

    $author.value

    FINAL EXAM - WEDNESDAY, 8/5 -- ALL STUDENTS; On Campus Classroom Sections. The FINAL Exam INFO -- will be in HAMP 3144 from 3:30pm to 5:30pm.

  9. MA 220

    E-Print Network [OSTI]

    Dec 10, 2007 ... m'er aisle of every fourth row. ev. 7-7-99. 0 PM aw. ' 4. Exam. LAMBERT FIELDHQUSE EINALEXAMINATIDNQ QFATING ARRANGEMENT.

  10. MA 15910

    E-Print Network [OSTI]

    ... of Elliott Hall balcony Exam 3 Answers; FINAL EXAM; Tuesday, 12/16; 8:00 AM - 10:00 AM; Final Exam Memo Lambert Fieldhouse Practice Final Exam...

  11. MA 51500

    E-Print Network [OSTI]

    $author.value

    An introduction to the mathematical tools and techniques of modern finance theory, in the context of Black-Scholes option pricing. Brownian motion and its...

  12. MA.2

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V. Andolina:I 1 '\Ll 1vr*M OM'

  13. Ma Philippine

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby aLED Street LightingFrom theHighI _s - "U N C- . . . .

  14. MaGe - a Geant4-based Monte Carlo framework for low-background experiments

    E-Print Network [OSTI]

    Yuen-Dat Chan; Jason A. Detwiler; Reyco Henning; Victor M. Gehman; Rob A. Johnson; David V. Jordan; Kareem Kazkaz; Markus Knapp; Kevin Kroninger; Daniel Lenz; Jing Liu; Xiang Liu; Michael G. Marino; Akbar Mokhtarani; Luciano Pandola; Alexis G. Schubert; Claudia Tomei

    2008-02-06

    A Monte Carlo framework, MaGe, has been developed based on the Geant4 simulation toolkit. Its purpose is to simulate physics processes in low-energy and low-background radiation detectors, specifically for the Majorana and Gerda $^{76}$Ge neutrinoless double-beta decay experiments. This jointly-developed tool is also used to verify the simulation of physics processes relevant to other low-background experiments in Geant4. The MaGe framework contains simulations of prototype experiments and test stands, and is easily extended to incorporate new geometries and configurations while still using the same verified physics processes, tunings, and code framework. This reduces duplication of efforts and improves the robustness of and confidence in the simulation output.

  15. On Larkin-Imry-Ma State of 3He-A in Aerogel

    E-Print Network [OSTI]

    G. E. Volovik

    2007-10-02

    Superfluid 3He-A shares the properties of spin nematic and chiral orbital ferromagnet. Its order parameter is characterized by two vectors d and l. This doubly anisotropic superfluid, when it is confined in aerogel, represents the most interesting example of a system with continuous symmetry in the presence of random anisotropy disorder. We discuss the Larkin-Imry-Ma state, which is characterized by the short-range orientational order of the vector l, while the long-range orientational order is destroyed by the collective action of the randomly oriented aerogel strings. On the other hand, sufficiently large regular anisotropy produced either by the deformation of the aerogel or by applied superflow suppresses the Larkin-Imry-Ma effect leading to the uniform orientation of the vector l. This interplay of regular and random anisotropy allows us to study many different effects.

  16. On Larkin-Imry-Ma State of 3He-A in Aerogel

    E-Print Network [OSTI]

    Volovik, G E

    2007-01-01

    Superfluid 3He-A shares the properties of spin nematic and chiral orbital ferromagnet. Its order parameter is characterized by two vectors d and l. This doubly anisotropic superfluid, when it is confined in aerogel, represents the most interesting example of a system with continuous symmetry in the presence of random anisotropy disorder. We discuss the Larkin-Imry-Ma state, which is characterized by the short-range orientational order of the vector l, while the long-range orientational order is destroyed by the collective action of the randomly oriented aerogel strings. On the other hand, sufficiently large regular anisotropy produced either by the deformation of the aerogel or by applied superflow destroys the Larkin-Imry-Ma effect leading to the uniform orientation of the vector l. This interplay of regular and random anisotropy allows us to study many different effects.

  17. Structure of Oxide Nanoparticles in Fe-16Cr MA/ODS Ferritic Steel

    SciTech Connect (OSTI)

    Hsiung, L; Fluss, M; Kimura, A

    2010-04-06

    Oxide nanoparticles in Fe-16Cr ODS ferritic steel fabricated by mechanical alloying (MA) method have been examined using high-resolution transmission electron microscopy (HRTEM) techniques. A partial crystallization of oxide nanoparticles was frequently observed in as-fabricated ODS steel. The crystal structure of crystalline oxide particles is identified to be mainly Y{sub 4}Al{sub 2}O{sub 9} (YAM) with a monoclinic structure. Large nanoparticles with a diameter larger than 20 nm tend to be incoherent and have a nearly spherical shape, whereas small nanoparticles with a diameter smaller than 10 nm tend to be coherent or semi-coherent and have faceted boundaries. The oxide nanoparticles become fully crystallized after prolonged annealing at 900 C. These results lead us to propose a three-stage formation mechanism of oxide nanoparticles in MA/ODS steels.

  18. E D U C A T I O N M.A. in Journalism

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    E D U C A T I O N M.A. in Journalism University of Missouri-Columbia School of Journalism 1993 B.A. in Journalism University of Missouri-Columbia School of Journalism 1987 A C A D E M I C E X P E R I E N C E A S S I S T A N T P R O F E S S O R (2009-present) PERLEY ISAAC REED SCHOOL OF JOURNALISM, WEST VIRGINIA

  19. redMaPPer. I. Algorithm and SDSS DR8 catalog

    SciTech Connect (OSTI)

    Rykoff, E. S.; Rozo, E.; Reddick, R.; Wechsler, R. H.; Busha, M. T.; Cunha, C. E.; Finoguenov, A.; Evrard, A.; Koester, B. P.; Hao, J.; Nord, B.; Leauthaud, A.; Pierre, M.; Sadibekova, T.; Sheldon, E. S.

    2014-04-20

    We describe redMaPPer, a new red sequence cluster finder specifically designed to make optimal use of ongoing and near-future large photometric surveys. The algorithm has multiple attractive features: (1) it can iteratively self-train the red sequence model based on a minimal spectroscopic training sample, an important feature for high-redshift surveys. (2) It can handle complex masks with varying depth. (3) It produces cluster-appropriate random points to enable large-scale structure studies. (4) All clusters are assigned a full redshift probability distribution P(z). (5) Similarly, clusters can have multiple candidate central galaxies, each with corresponding centering probabilities. (6) The algorithm is parallel and numerically efficient: it can run a Dark Energy Survey-like catalog in ?500 CPU hours. (7) The algorithm exhibits excellent photometric redshift performance, the richness estimates are tightly correlated with external mass proxies, and the completeness and purity of the corresponding catalogs are superb. We apply the redMaPPer algorithm to ?10, 000 deg{sup 2} of SDSS DR8 data and present the resulting catalog of ?25,000 clusters over the redshift range z in [0.08, 0.55]. The redMaPPer photometric redshifts are nearly Gaussian, with a scatter ? {sub z} ? 0.006 at z ? 0.1, increasing to ? {sub z} ? 0.02 at z ? 0.5 due to increased photometric noise near the survey limit. The median value for |?z|/(1 + z) for the full sample is 0.006. The incidence of projection effects is low (?5%). Detailed performance comparisons of the redMaPPer DR8 cluster catalog to X-ray and Sunyaev-Zel'dovich catalogs are presented in a companion paper.

  20. Solvent extraction of Li+, H3O+ and NH4+ into nitrobenzene by using sodium dicarbollylcobaltate and calix[4]arene-bis(t-octylbenzo-18-crown-6)

    SciTech Connect (OSTI)

    Makrlik, Emanuel; Selucky, P.; Vanura, Petr; Moyer, Bruce A

    2013-01-01

    From extraction experiments and c-activity measurements, the exchange extraction constants corresponding to the general equilibrium M+ (aq) + NaL+ (nb) , ML+ (nb) + Na+ (aq) taking place in the two-phase water nitrobenzene system (M+ = Li+, H3O+, NH+4; L = calix[4]arene-bis(t-octylbenzo-18-crown-6); aq = aqueous phase, nb = nitrobenzene phase) were evaluated. Furthermore, the stability constants of the ML+ complexes in nitrobenzene saturated with water were calculated; they were found to increase in the following cation order: zH3O+ < Li+ < NH+4.

  1. Microstructures and properties of CH{sub 3}NH{sub 3}PbI{sub 3?x}Cl{sub x} hybrid solar cells

    SciTech Connect (OSTI)

    Suzuki, Kohei E-mail: oku@mat.usp.ac.jp; Suzuki, Atsushi E-mail: oku@mat.usp.ac.jp; Zushi, Masahito E-mail: oku@mat.usp.ac.jp; Oku, Takeo E-mail: oku@mat.usp.ac.jp

    2015-02-27

    Halide-perovskite CH{sub 3}NH{sub 3}PbI{sub 3} was produced on mesoporous TiO{sub 2} layer by spin-coating a precursor solution of PbCl{sub 2} and CH{sub 3}NH{sub 3}I in dimethylformamide. The role of the annealing process and chlorine (Cl) doping for the perovskite-phase formation was investigated. It was found that crystallization of the perovskite materials was stimulated by the annealing process, and that longer annealing time is necessary for the Cl-doped perovskite compared with that of non-doped perovskite phase.

  2. OVERVIEW OF THE SDSS-IV MaNGA SURVEY: MAPPING NEARBY GALAXIES AT APACHE POINT OBSERVATORY

    SciTech Connect (OSTI)

    Bundy, Kevin; Bershady, Matthew A.; Wake, David A.; Tremonti, Christy; Diamond-Stanic, Aleksandar M.; Law, David R.; Cherinka, Brian; Yan, Renbin; Snchez-Gallego, Jos R.; Drory, Niv; MacDonald, Nicholas; Weijmans, Anne-Marie; Thomas, Daniel; Masters, Karen; Coccato, Lodovico; Aragn-Salamanca, Alfonso; Avila-Reese, Vladimir; Badenes, Carles; Falcn-Barroso, Jsus; Belfiore, Francesco; and others

    2015-01-01

    We present an overview of a new integral field spectroscopic survey called MaNGA (Mapping Nearby Galaxies at Apache Point Observatory), one of three core programs in the fourth-generation Sloan Digital Sky Survey (SDSS-IV) that began on 2014 July 1. MaNGA will investigate the internal kinematic structure and composition of gas and stars in an unprecedented sample of 10,000 nearby galaxies. We summarize essential characteristics of the instrument and survey design in the context of MaNGA's key science goals and present prototype observations to demonstrate MaNGA's scientific potential. MaNGA employs dithered observations with 17 fiber-bundle integral field units that vary in diameter from 12'' (19 fibers) to 32'' (127 fibers). Two dual-channel spectrographs provide simultaneous wavelength coverage over 3600-10300 at R ? 2000. With a typical integration time of 3 hr, MaNGA reaches a target r-band signal-to-noise ratio of 4-8 ({sup 1} per 2'' fiber) at 23 AB mag arcsec{sup 2}, which is typical for the outskirts of MaNGA galaxies. Targets are selected with M {sub *} ? 10{sup 9} M {sub ?} using SDSS-I redshifts and i-band luminosity to achieve uniform radial coverage in terms of the effective radius, an approximately flat distribution in stellar mass, and a sample spanning a wide range of environments. Analysis of our prototype observations demonstrates MaNGA's ability to probe gas ionization, shed light on recent star formation and quenching, enable dynamical modeling, decompose constituent components, and map the composition of stellar populations. MaNGA's spatially resolved spectra will enable an unprecedented study of the astrophysics of nearby galaxies in the coming 6yr.

  3. Upright cone beam CT imaging using the onboard imager

    SciTech Connect (OSTI)

    Fave, Xenia Martin, Rachael; Yang, Jinzhong; Balter, Peter; Court, Laurence; Carvalho, Luis; Pan, Tinsu

    2014-06-15

    Purpose: Many patients could benefit from being treated in an upright position. The objectives of this study were to determine whether cone beam computed tomography (CBCT) could be used to acquire upright images for treatment planning and to demonstrate whether reconstruction of upright images maintained accurate geometry and Hounsfield units (HUs). Methods: A TrueBeam linac was programmed in developer mode to take upright CBCT images. The gantry head was positioned at 0, and the couch was rotated to 270. The x-ray source and detector arms were extended to their lateral positions. The x-ray source and gantry remained stationary as fluoroscopic projections were taken and the couch was rotated from 270 to 90. The x-ray tube current was normalized to deposit the same dose (measured using a calibrated Farmer ion chamber) as that received during a clinical helical CT scan to the center of a cylindrical, polyethylene phantom. To extend the field of view, two couch rotation scans were taken with the detector offset 15 cm superiorly and then 15 cm inferiorly. The images from these two scans were stitched together before reconstruction. Upright reconstructions were compared to reconstructions from simulation CT scans of the same phantoms. Two methods were investigated for correcting the HUs, including direct calibration and mapping the values from a simulation CT. Results: Overall geometry, spatial linearity, and high contrast resolution were maintained in upright reconstructions. Some artifacts were created and HU accuracy was compromised; however, these limitations could be removed by mapping the HUs from a simulation CT to the upright reconstruction for treatment planning. Conclusions: The feasibility of using the TrueBeam linac to take upright CBCT images was demonstrated. This technique is straightforward to implement and could be of enormous benefit to patients with thoracic tumors or those who find a supine position difficult to endure.

  4. The CT14 Global Analysis of Quantum Chromodynamics

    E-Print Network [OSTI]

    Dulat, Sayipjamal; Gao, Jun; Guzzi, Marco; Huston, Joey; Nadolsky, Pavel; Pumplin, Jon; Schmidt, Carl; Stump, Daniel; Yuan, C P

    2015-01-01

    We present new parton distribution functions (PDFs) up to next-to-next-to-leading order (NNLO) from the CTEQ-TEA global analysis of quantum chromodynamics. These differ from previous CT PDFs in several respects, including the use of data from LHC experiments and the new D0 charged lepton rapidity asymmetry data, as well as the use of more flexible parametrization of PDFs that, in particular, allows a better fit to different combinations of quark flavors. Predictions for important LHC processes, especially Higgs boson production at 13 TeV, are presented. These CT14 PDFs include a central set and error sets in the Hessian representation. For completeness, we also present the CT14 PDFs determined at the leading order (LO) and the next-to-leading order (NLO) in QCD. Besides these general-purpose PDF sets, we provide a series of (N)NLO sets with various $\\alpha_s$ values and additional sets in heavy-quark scheme with up to 3, 4, and 6 active flavors.

  5. The CT14 Global Analysis of Quantum Chromodynamics

    E-Print Network [OSTI]

    Sayipjamal Dulat; Tie Jiun Hou; Jun Gao; Marco Guzzi; Joey Huston; Pavel Nadolsky; Jon Pumplin; Carl Schmidt; Daniel Stump; C. P. Yuan

    2015-08-02

    We present new parton distribution functions (PDFs) up to next-to-next-to-leading order (NNLO) from the CTEQ-TEA global analysis of quantum chromodynamics. These differ from previous CT PDFs in several respects, including the use of data from LHC experiments and the new D0 charged lepton rapidity asymmetry data, as well as the use of more flexible parametrization of PDFs that, in particular, allows a better fit to different combinations of quark flavors. Predictions for important LHC processes, especially Higgs boson production at 13 TeV, are presented. These CT14 PDFs include a central set and error sets in the Hessian representation. For completeness, we also present the CT14 PDFs determined at the leading order (LO) and the next-to-leading order (NLO) in QCD. Besides these general-purpose PDF sets, we provide a series of (N)NLO sets with various $\\alpha_s$ values and additional sets in general-mass variable flavor number (GM-VFN) schemes, to deal with heavy partons, with up to 3, 4, and 6 active flavors.

  6. Parallel and Distributed Computing Systems (PDCS) 2007, Cambridge, MA21 Nov 2007 1 The Impact of Error in User-Provided

    E-Print Network [OSTI]

    Jones, William Michael

    Parallel and Distributed Computing Systems (PDCS) 2007, Cambridge, MA21 Nov 2007 1 The Impact://www.parl.clemson.edu/beosim #12;Parallel and Distributed Computing Systems (PDCS) 2007, Cambridge, MA21 Nov 2007 2 Multi-site Co-allocation #12;Parallel and Distributed Computing Systems (PDCS) 2007, Cambridge, MA21 Nov 2007 3 Scheduling w

  7. Whose parking space is it? : managing residential parking in the context of urban growth : case study of Cambridge, MA

    E-Print Network [OSTI]

    Chang, Winnie C

    2014-01-01

    In the context of urban growth, how can a city approach residential parking issues? Cambridge, MA is experiencing rapid growth in real estate development and investment, shifts in demographics and travel behavior. How do ...

  8. Impact of Human Capital on the Organization Performance Dr. Ahmad I. AL-Ma'ani -Philadelphia University Jordan

    E-Print Network [OSTI]

    Impact of Human Capital on the Organization Performance Dr. Ahmad I. AL-Ma'ani - Philadelphia University Jordan almaani100@yahoo.com & Dr. Nasser "M. S" Jaradat Philadelphia University Jordan

  9. Vehicle Technologies Office Merit Review 2015: MA3TModeling Vehicle Market Dynamics with Consumer Segmentation

    Broader source: Energy.gov [DOE]

    Presentation given by Oak Ridge National Laboratory at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about MA3Tmodeling...

  10. Rabies Requirements for NH 4-H Animals Upon the recommendation of the New Hampshire State Veterinarian, all mammals shown or exhibited

    E-Print Network [OSTI]

    New Hampshire, University of

    Rabies Requirements for NH 4-H Animals Upon the recommendation of the New Hampshire State Veterinarian, all mammals shown or exhibited at New Hampshire 4-H events including fairs, shows, clinics, 4-H and fairs may have additional vaccination and health requirements as recommended by the New Hampshire State

  11. Phase Transformations of the Ternary System (NH4)2SO4-H2SO4-H2O and the Implications for Cirrus Cloud Formation

    E-Print Network [OSTI]

    the presence of NH4 + ions in the aerosol of the upper troposphere. Low-temperature ternary phase diagrams distribution alters the cloud's radiative properties, persistence, and surface area available for heterogeneous radiation, which insulates or warms Earth, and scattering the sun's visible radiation upward, thus cooling

  12. Detailed modeling and laser-induced fluorescence imaging of nitric oxide in a NH3-seeded non-premixed methane/air flame

    E-Print Network [OSTI]

    Bell, John B.

    non-premixed methane/air flame John B. Bell, Marcus S. Day, Joseph F. Grcar Computing Sciences-induced fluorescence imaging of nitric oxide in a NH3-seeded non-premixed methane/air flame Abstract In this paper we study the formation of NO in laminar, nitrogen diluted methane diffusion flames that are seeded

  13. An Investigation of Ammonia Extraction from Liquid Manure Using a Gas-Permeable Membrane Pollution of air, soil and water caused by excessive ammonia (NH3) emission and deposition from animal

    E-Print Network [OSTI]

    Mukhtar, Saqib

    An Investigation of Ammonia Extraction from Liquid Manure Using a Gas-Permeable Membrane Summary Pollution of air, soil and water caused by excessive ammonia (NH3) emission and deposition from animal by extracting it from liquid manure and potentially using the recovered NH3 as fertilizer. For this purpose, lab

  14. THE ROTATIONAL SPECTRUM OF ANTI-ETHYLAMINE (CH3CH2NH2) FROM 10 TO 270 GHz: A LABORATORY STUDY AND ASTRONOMICAL SEARCH IN SGR B2(N)

    E-Print Network [OSTI]

    Ziurys, Lucy M.

    AND ASTRONOMICAL SEARCH IN SGR B2(N) A. J. Apponi, M. Sun, D. T. Halfen,1 and L. M. Ziurys Departments of Chemistry identification of methylamine (CH3NH2) and ethylamine (CH3CH2NH2) in the aerogel collectors (Sandford et al. 2006

  15. DRAFT of 2015 Natural Resources Stewards Course Curriculum Overview Fridays, beginning Sept. 4, 2015 Dec. 4, 2015, 8:30 a.m. to 4:00 p.m. at NH Fish and Game Dept.

    E-Print Network [OSTI]

    and Game Dept. Session 4 9/25/15 1:00 pm - 8:00 pm Permaculture Day Nottingham, NH Special session and Sustainable Design Services Session 5 10/02/15 8:30 am - 4:00 pm Permaculture Principles and Ethics & Reading the Forested Landscape Society for the Protection of NH Forests permaculture principles introduced forces

  16. An Analysis of Wind Power Development in the Town of Hull, MA

    SciTech Connect (OSTI)

    Adams, Christopher

    2013-06-30

    Over the past three decades the Town of Hull, MA has solidified its place in U.S. wind energy history through its leadership in community-based generation. This is illustrated by its commissioning of the first commercial-scale wind turbine on the Atlantic coastline, the first suburban-sited turbine in the continental United States, pursuit of community-based offshore wind, and its push toward creating an energy independent community. The town's history and demographics are briefly outlined, followed by experience in projects to provide wind power, including pre-construction and feasibility efforts, financial aspects, and market/industry factors.

  17. MaRIE: A Presentation to the Science Campaigns Round Robin (Conference) |

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle)SciTech Connect Conference: MaRIE: A Presentation to

  18. MaRIE: A facility for time-dependent materials science at the mesoscale

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle)SciTech Connect Conference: MaRIE: A Presentation

  19. Roadmap to MaRIE (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIE Citation Details

  20. Roadmap to MaRIE (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIE Citation

  1. Roadmap to MaRIE August 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIE CitationAugust 2015

  2. Roadmap to MaRIE August 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIE CitationAugust

  3. Roadmap to MaRIE January 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIE

  4. Roadmap to MaRIE March 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIERoadmap to

  5. Roadmap to MaRIE March 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIERoadmap toMarch 2015

  6. Roadmap to MaRIE May 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIERoadmap toMarch

  7. Roadmap to MaRIE May 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIERoadmap toMarchMay

  8. Roadmap to MaRIE November 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIERoadmap

  9. Roadmap to MaRIE November 2015 (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory:ColliderSampleMaRIERoadmapRoadmap to

  10. MA3T Model Application at ORNL Assesses the Future of Fuel Cell Markets |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuelsof EnergyApril 2014 |Department of Energy MA3T Model Application at ORNL

  11. Semi-automatic delineation using weighted CT-MRI registered images...

    Office of Scientific and Technical Information (OSTI)

    delineation using weighted CT-MRI registered images for radiotherapy of nasopharyngeal cancer Citation Details In-Document Search Title: Semi-automatic delineation using weighted...

  12. An algorithm for constrained one-step inversion of spectral CT data

    E-Print Network [OSTI]

    Barber, Rina Foygel; Schmidt, Taly Gilat; Pan, Xiaochuan

    2015-01-01

    We develop a primal-dual algorithm that allows for one-step inversion of spectral CT transmission photon counts data to a basis map decomposition. The algorithm allows for image constraints to be enforced on the basis maps during the inversion. The derivation of the algorithm makes use of a local upper bounding quadratic approximation to generate descent steps for non-convex spectral CT data discrepancy terms, combined with a new convex-concave optimization algorithm. Convergence of the algorithm is demonstrated on simulated spectral CT data. Simulations with noise and anthropomorphic phantoms show examples of how to employ the constrained one-step algorithm for spectral CT data.

  13. Embedded Library in WebCT: Pushing UCSD Library Resources to Faculty Courses

    E-Print Network [OSTI]

    Ho, SuHui

    2007-01-01

    keeper about pushing the library to department pages & webEmbedded Library in WebCT:Pushing UCSD Library Resources to Faculty Courses Presenter:

  14. A Fossilized Opal A To Opal C-T Transformation On The Northeast...

    Open Energy Info (EERE)

    A Fossilized Opal A To Opal C-T Transformation On The Northeast Atlantic Margin- Support For A Significantly Elevated Palaeogeothermal Gradient During The Neogene? Jump to:...

  15. Automated matching and segmentation of lymphoma on serial CT examinations

    SciTech Connect (OSTI)

    Yan Jiayong; Zhao Binsheng; Curran, Sean; Zelenetz, Andrew; Schwartz, Lawrence H.

    2007-01-15

    In patients with lymphoma, identification and quantification of the tumor extent on serial CT examinations is critical for assessing tumor response to therapy. In this paper, we present a computer method to automatically match and segment lymphomas in follow-up CT images. The method requires that target lymph nodes in baseline CT images be known. A fast, approximate alignment technique along the x, y, and axial directions is developed to provide a good initial condition for the subsequent fast free form deformation (FFD) registration of the baseline and the follow-up images. As a result of the registration, the deformed lymph node contours from the baseline images are used to automatically determine internal and external markers for the marker-controlled watershed segmentation performed in the follow-up images. We applied this automated registration and segmentation method retrospectively to 29 lymph nodes in 9 lymphoma patients treated in a clinical trial at our cancer center. A radiologist independently delineated all lymph nodes on all slices in the follow-up images and his manual contours served as the ''gold standard'' for evaluation of the method. Preliminary results showed that 26/29 (89.7%) lymph nodes were correctly matched; i.e., there was a geometrical overlap between the deformed lymph node from the baseline and its corresponding mass in the follow-up images. Of the matched 26 lymph nodes, 22 (84.6%) were successfully segmented; for these 22 lymph nodes, several metrics were calculated to quantify the method's performance. Among them, the average distance and the Hausdorff distance between the contours generated by the computer and those generated by the radiologist were 0.9 mm (stdev. 0.4 mm) and 3.9 mm (stdev. 2.1 mm), respectively.

  16. MOSE: zooming on the Meso-NH mesoscale model performances at the surface layer at ESO sites (Paranal and Armazones)

    E-Print Network [OSTI]

    Lascaux, Franck; di Arcetri, INAF / Osservatorio Astrofisico; 10.1117/12.925934

    2012-01-01

    In the context of the MOSE project, in this contribution we present a detailed analysis of the Meso-NH mesoscale model performances and their dependency on the model and orography horizontal resolutions in proximity of the ground. The investigated sites are Cerro Paranal (site of the ESO Very Large Telescope - VLT) and Cerro Armazones (site of the ESO European Extremely Large Telescope - E-ELT), in Chile. At both sites, data from a rich statistical sample of different nights are available - from AWS (Automated Weather Stations) and masts - giving access to wind speed, wind direction and temperature at different levels near the ground (from 2 m to 30 m above the ground). In this study we discuss the use of a very high horizontal resolution (dX=0.1 km) numerical configuration that overcomes some specific limitations put in evidence with a standard configuration with dX=0.5 km. In both sites results are very promising. The study is co-funded by ESO and INAF.

  17. Density Functional Studies of Stoichiometric Surfaces of Orthorhombic Hybrid Perovskite CH3NH3PbI3

    SciTech Connect (OSTI)

    Wang, Yun; Huang, Jingsong; Sumpter, Bobby G; Zhang, Haimin; Liu, Porun; Yang, Huagui; Zhao, Huijun

    2015-01-01

    Organic/inorganic hybrid perovskite materials are highly attractive for dye-sensitized solar cells as demonstrated by their rapid advances in energy conversion efficiency. In this work, the structures, energetics, and electronic properties for a range of stoichiometric surfaces of the orthorhombic perovskite CH3NH3PbI3 are theoretically studied using density functional theory. Various possible spatially and constitutionally isomeric surfaces are considered by diversifying the spatial orientations and connectivities of surface Pb-I bonds. The comparison of the surface energies for the most stable configurations identified for various surfaces shows that the stabilities of stoichiometric surfaces are mainly dictated by the coordination numbers of surface atoms, which are directly correlated with the numbers of broken bonds. Additionally, Coulombic interactions between I anions and organic countercations on the surface also contribute to the stabilization. Electronic properties are compared between the most stable (100) surface and the bulk phase, showing generally similar features except for the lifted band degeneracy and the enhanced bandgap energy for the surface. These studies on the stoichiometric surfaces serve as the first step toward gaining a fundamental understanding of the interfacial properties in the current structural design of perovskite based solar cells, in order to achieve further breakthroughs in solar conversion efficiencies.

  18. Effects of constraints in general branched molecules: A quantitative ab initio study in HCO-L-Ala-NH2

    E-Print Network [OSTI]

    Pablo Echenique; J. L. Alonso; Ivan Calvo

    2006-12-04

    A general approach to the design of accurate classical potentials for protein folding is described. It includes the introduction of a meaningful statistical measure of the differences between approximations of the same potential energy, the definition of a set of Systematic and Approximately Separable and Modular Internal Coordinates (SASMIC), much convenient for the simulation of general branched molecules, and the imposition of constraints on the most rapidly oscillating degrees of freedom. All these tools are used to study the effects of constraints in the Conformational Equilibrium Distribution (CED) of the model dipeptide HCO-L-Ala-NH2. We use ab initio Quantum Mechanics calculations including electron correlation at the MP2 level to describe the system, and we measure the conformational dependence of the correcting terms to the naive CED based in the Potential Energy Surface (PES) without any simplifying assumption. These terms are related to mass-metric tensors determinants and also occur in the Fixman's compensating potential. We show that some of the corrections are non-negligible if one is interested in the whole Ramachandran space. On the other hand, if only the energetically lower region, containing the principal secondary structure elements, is assumed to be relevant, then, all correcting terms may be neglected up to peptides of considerable length. This is the first time, as far as we know, that the analysis of the conformational dependence of these correcting terms is performed in a relevant biomolecule with a realistic potential energy function.

  19. DOE - Office of Legacy Management -- C G Sargent and Sons - MA 17

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth Dakota Edgemont, SouthLaboratory - CT 06YorkBurro CanyonG

  20. DOE - Office of Legacy Management -- Metals and Controls Corp FSM Dept - MA

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth Dakota Edgemont,Manufacturing - OHSelling Corp - CT 0-01

  1. CT Scans of Cores Metadata, Barrow, Alaska 2015

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Katie McKnight; Tim Kneafsey; Craig Ulrich

    2015-03-11

    Individual ice cores were collected from Barrow Environmental Observatory in Barrow, Alaska, throughout 2013 and 2014. Cores were drilled along different transects to sample polygonal features (i.e. the trough, center and rim of high, transitional and low center polygons). Most cores were drilled around 1 meter in depth and a few deep cores were drilled around 3 meters in depth. Three-dimensional images of the frozen cores were constructed using a medical X-ray computed tomography (CT) scanner. TIFF files can be uploaded to ImageJ (an open-source imaging software) to examine soil structure and densities within each core.

  2. Pre-processing methods for nodule detection in lung CT

    E-Print Network [OSTI]

    Cheran, S C; De Mitri, I; De Nunzio, G; Fantacci, M E; Fauci, F; Gargano, G; Torres, E L; Massafra, R; Oliva, P; Prez-Martnez, A; Raso, G; Retico, A; Stumbo, S; Tata, A

    2005-01-01

    The use of automatic systems in the analysis of medical images has proven to be very useful to radiologists, especially in the framework of screening programs, in which radiologists make their first diagnosis on the basis of images only, most of those corresponding to healthy patients, and have to distinguish pathological findings from non-pathological ones at an early stage. In particular, we are developing preprocessing methods to be applied for pulmonary nodule Computer Aided Detection in low-dose lung Multi Slice CT (Computed Tomography) images.

  3. CT Scans of Cores Metadata, Barrow, Alaska 2015

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Katie McKnight; Tim Kneafsey; Craig Ulrich

    Individual ice cores were collected from Barrow Environmental Observatory in Barrow, Alaska, throughout 2013 and 2014. Cores were drilled along different transects to sample polygonal features (i.e. the trough, center and rim of high, transitional and low center polygons). Most cores were drilled around 1 meter in depth and a few deep cores were drilled around 3 meters in depth. Three-dimensional images of the frozen cores were constructed using a medical X-ray computed tomography (CT) scanner. TIFF files can be uploaded to ImageJ (an open-source imaging software) to examine soil structure and densities within each core.

  4. DOE - Office of Legacy Management -- American Brass Co - CT 01

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth Dakota Edgemont, South Dakota,You are hereNY 01NJBrass Co - CT 01

  5. CT Scan of Earth Links Mantle Plumes with Volcanic Hotspots

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits &BradburyMay 1, 2013, 4:15pmEnergyNovemberComputeCSTEC EnergyCT

  6. BAIC CT T SK Holdings JV | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAandAmminex AAustria Geothermal RegionAvraPáginasSolar JumpPowerBAIC CT T

  7. Elemental characterization of LL-MA radioactive waste packages with the associated particle technique

    SciTech Connect (OSTI)

    Perot, B.; Carasco, C.; Toure, M.; El Kanawati, W.; Eleon, C.

    2011-07-01

    The French Alternative Energies and Atomic Energy Commission (CEA) and National Radioactive Waste Management Agency (ANDRA) are conducting an R and D program to improve the characterization of long-lived and medium activity (LL-MA) radioactive waste packages with analytical methods and with non-destructive nuclear measurements. This paper concerns fast neutron interrogation with the associated particle technique (APT), which brings 3D information about the waste material composition. The characterization of volume elements filled with iron, water, aluminium, and PVC in bituminized and fibre concrete LL-MA waste packages has been investigated with MCNP [1] and MODAR data analysis software [2]. APT provides usable information about major elements presents in the volumes of interest. However, neutron scattering on hydrogen nuclei spreads the tagged neutron beam out of the targeted volume towards surrounding materials, reducing spatial selectivity. Simulation shows that small less than 1 L targets can be characterised up to the half-radius of a 225 L bituminized drum, the matrix of which is very rich in hydrogen. Deeper characterization in concrete is possible but limited by counting statistics due to photon attenuation in this dense matrix and, unless large inspection volumes are considered, by the lack of spatial selectivity of the tagged neutron beam due to neutron scattering. (authors)

  8. A Model-Based Iterative Algorithm for Dual-Energy X-Ray CT Reconstruction

    E-Print Network [OSTI]

    A Model-Based Iterative Algorithm for Dual-Energy X-Ray CT Reconstruction Ruoqiao Zhang, Jean, Senior Member, IEEE Abstract--Recent developments in dual-energy X-ray CT have shown a number of benefits the opportunity to reduce noise and artifacts in dual energy reconstructions. However, previous approaches

  9. Surface Extraction from Multi-Material Components for Metrology using Dual Energy CT

    E-Print Network [OSTI]

    Surface Extraction from Multi-Material Components for Metrology using Dual Energy CT Christoph surface models of multi-material components using dual energy com- puted tomography (DECT exposure scans was facilitated. Index Terms--DECT image fusion, local surface extraction, Dual Energy CT

  10. Automated segmentation of lungs with severe interstitial lung disease in CT

    E-Print Network [OSTI]

    Automated segmentation of lungs with severe interstitial lung disease in CT Jiahui Wang Department: Accurate segmentation of lungs with severe interstitial lung disease ILD in thoracic computed tomography CT developed in this study a texture analysis-based method for accurate segmentation of lungs with severe ILD

  11. Location registration and recognition (LRR) for serial analysis of nodules in lung CT scans

    E-Print Network [OSTI]

    Location registration and recognition (LRR) for serial analysis of nodules in lung CT scans Michal t In the clinical workflow for lung cancer management, the comparison of nodules between CT scans from subsequent in investigating the condition of the lung. The algorithm uses a combination of feature extraction, indexing

  12. AUTOMATIC HEART ISOLATION FOR CT CORONARY VISUALIZATION USING G. Funka-Lea1

    E-Print Network [OSTI]

    Boykov, Yuri

    AUTOMATIC HEART ISOLATION FOR CT CORONARY VISUALIZATION USING GRAPH-CUTS G. Funka-Lea1 , Y. Boykov3 isolate the outer surface of the entire heart in Computer Tomogra- phy (CT) cardiac scans. Isolating the entire heart allows the coronary vessels on the surface of the heart to be easily visu- alized despite

  13. Multi-level Ground Glass Nodule Detection and Segmentation in CT Lung Images

    E-Print Network [OSTI]

    Corso, Jason J.

    Multi-level Ground Glass Nodule Detection and Segmentation in CT Lung Images Yimo Tao1,2 , Le Lu1. Early detection of Ground Glass Nodule (GGN) in lung Computed Tomography (CT) images is important for lung cancer prog- nosis. Due to its indistinct boundaries, manual detection and segmenta- tion of GGN

  14. University of Connecticut School of Nursing, 231 Glenbrook Road, Storrs, CT 062692026 NEWS RELEASE

    E-Print Network [OSTI]

    Alpay, S. Pamir

    University of Connecticut School of Nursing, 231 Glenbrook Road, Storrs, CT 062692026 NEWS, 2015 Storrs, CT - The University of Connecticut School of Nursing jumped 36 spots from a No. 79 ranking, students, community partners and alumni at the University of Connecticut's School of Nursing," said Dean

  15. Lobe-based Estimating Ventilation and Perfusion from 3D CT scans of the Lungs

    E-Print Network [OSTI]

    Warren, Joe

    Lobe-based Estimating Ventilation and Perfusion from 3D CT scans of the Lungs Travis McPhail Joe Warren Rice University Thomas Guerrero, M.D. M.D. Anderson Cancer Center Introduction Lung cancer for lung cancer includes surgical removal or radiation therapy. 3D imaging technologies such CT, MRI

  16. ROBUST SEGMENTATION OF LUNG TISSUE IN CHEST CT SCANNING Amal Farag, James Graham and Aly Farag

    E-Print Network [OSTI]

    Louisville, University of

    ROBUST SEGMENTATION OF LUNG TISSUE IN CHEST CT SCANNING Amal Farag, James Graham and Aly Farag.edu ABSTRACT This paper deals with segmentation of the lung tissues from low dose CT (LDCT) scans of the chest. Goal is correct segmentation as well as maintaining the details of the lung region in the chest cavity

  17. SU-E-I-81: Assessment of CT Radiation Dose and Image Quality for An Automated Tube Potential Selection Algorithm Using Adult Anthropomorphic and ACR Phantoms

    SciTech Connect (OSTI)

    Mahmood, U; Erdi, Y; Wang, W

    2014-06-01

    Purpose: To assess the impact of General Electrics (GE) automated tube potential algorithm, kV assist (kVa) on radiation dose and image quality, with an emphasis on optimizing protocols based on noise texture. Methods: Radiation dose was assessed by inserting optically stimulated luminescence dosimeters (OSLs) throughout the body of an adult anthropomorphic phantom (CIRS). The baseline protocol was: 120 kVp, Auto mA (180 to 380 mA), noise index (NI) = 14, adaptive iterative statistical reconstruction (ASiR) of 20%, 0.8s rotation time. Image quality was evaluated by calculating the contrast to noise ratio (CNR) and noise power spectrum (NPS) from the ACR CT accreditation phantom. CNRs were calculated according to the steps described in ACR CT phantom testing document. NPS was determined by taking the 3D FFT of the uniformity section of the ACR phantom. NPS and CNR were evaluated with and without kVa and for all available adaptive iterative statistical reconstruction (ASiR) settings, ranging from 0 to 100%. Each NPS was also evaluated for its peak frequency difference (PFD) with respect to the baseline protocol. Results: The CNR for the adult male was found to decrease from CNR = 0.912 0.045 for the baseline protocol without kVa to a CNR = 0.756 0.049 with kVa activated. When compared against the baseline protocol, the PFD at ASiR of 40% yielded a decrease in noise magnitude as realized by the increase in CNR = 0.903 0.023. The difference in the central liver dose with and without kVa was found to be 0.07%. Conclusion: Dose reduction was insignificant in the adult phantom. As determined by NPS analysis, ASiR of 40% produced images with similar noise texture to the baseline protocol. However, the CNR at ASiR of 40% with kVa fails to meet the current ACR CNR passing requirement of 1.0.

  18. Direct Observation of Long Electron-Hole Diffusion Distance beyond 1 Micrometer in CH3NH3PbI3 Perovskite Thin Film

    E-Print Network [OSTI]

    Li, Yu; Li, Yunlong; Wang, Wei; Bian, Zuqiang; Xiao, Lixin; Wang, Shufeng; Gong, Qihuang

    2015-01-01

    In high performance perovskite based on CH3NH3PbI3, the formerly reported short charge diffusion distance is a confliction to thick working layer in solar cell devices. We carried out a study on charge diffusion in spin-coated CH3NH3PbI3 perovskite thin film by transient fluorescent spectroscopy. A thickness-dependent fluorescent lifetime was found. This effect correlates to the defects at crystal grain boundaries. By coating the film with electron or hole transfer layer, PCBM or Spiro-OMeTAD respectively, we observed the charge transfer directly through the fluorescent decay. One-dimensional diffusion model was applied to obtain long charge diffusion distances, which is ~1.3 micron for electrons and ~5.2 micron for holes. This study gives direct support to the high performance of perovskite solar cells.

  19. Proceedings of MICCAI 2010 Workshop: Virtual Colonoscopy & Abdominal Imaging Recent advances in automated lesion detection for CT

    E-Print Network [OSTI]

    van Vliet, Lucas J.

    , techniques for CT colonography evolved rapidly, stimulated by encouraging performance data. Computer aided: computer aided detection, CT colonography, virtual colonoscopy. 1 Introduction Computed tomographic compliance. For digitally removing` the tagged materials, electronic cleansing (EC) methods were developed [1

  20. The Origin and Coupling Mechanism of the Magnetoelectric Effect in TM Cl 2 -4SC(NH 2 ) 2 ( TM = Ni and Co)

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Mun, Eundeok; Wilcox, Jason; Manson, Jamie L.; Scott, Brian; Tobash, Paul; Zapf, Vivien S.

    2014-01-01

    Most research on multiferroics and magnetoelectric effects to date has focused on inorganic oxides. Molecule-based materials are a relatively new field in which to search for magnetoelectric multiferroics and to explore new coupling mechanisms between electric and magnetic order. We present magnetoelectric behavior in NiCl 2 -4SC(NH 2 ) 2 (DTN) and CoCl 2 -4SC(NH 2 ) 2 (DTC). These compounds form tetragonal structures where the transition metal ion (Ni or Co) is surrounded by four electrically polar thiourea molecules [SC(NH 2 ) 2 ]. By tracking the magnetic and electric properties of these compounds as a function ofmoremagnetic field, we gain insights into the coupling mechanism by observing that, in DTN, the electric polarization tracks the magnetic ordering, whereas in DTC it does not. For DTN, all electrically polar thiourea molecules tilt in the same direction along the c -axis, breaking spatial-inversion symmetry, whereas, for DTC, two thiourea molecules tilt up and two tilt down with respect to c -axis, perfectly canceling the net electrical polarization. Thus, the magnetoelectric coupling mechanism in DTN is likely a magnetostrictive adjustment of the thiourea molecule orientation in response to magnetic order. less

  1. Modeling of plasma chemistry in an atmospheric pressure Ar/NH{sub 3} cylindrical dielectric barrier discharge described using the one-dimensional fluid model

    SciTech Connect (OSTI)

    Li Zhi [School of Science, University of Science and Technology Liaoning, Anshan 114051 (China); School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024 (China); Zhao Zhen [School of Chemistry and Life Science, Anshan Normal University, Anshan 114007 (China); School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051 (China); Li Xuehui [Physical Science and Technical College, Dalian University, Dalian 116622 (China)

    2013-01-15

    The keynote of our research is to study the gas phase chemistry in an atmospheric pressure Ar/NH{sub 3} cylindrical dielectric barrier discharge, which is very important to produce the iron-nitride magnetic fluid. For this purpose, a home-made one dimensional fluid model with the Scharfetter-Gummel method has been developed. The equations solved are the particle balances, assuming a drift-diffusion approximation for the fluxes, and the electron energy equation. The self-consistent electric field is obtained by the simultaneous solution of Poisson's equation. The simulations were carried out for the different ammonia concentrations (2%, 3.5%, and 7%), at a voltage of 1 kV, and a driving frequency of 20 kHz. It concluded that the major ion products of Ar are Ar{sup +} and Ar{sub 2}{sup +}. Ar{sup +} is the most important positive ions, followed by Ar{sub 2}{sup +}. It is shown that the NH{sup +} density is smaller than that of the other ammonia ions. The density of NH{sub 4}{sup +} is more than that of the other ammonia ions when the ammonia concentration increased. The diffuse mode can be established after the discharge was ignited, and the mode changes to filamentary mode with an increase in ammonia concentration.

  2. Abstract --Four-dimensional dynamic computed tomography (4D-dCT) plays an important role in radiation treatment

    E-Print Network [OSTI]

    dose during a 4D-dCT procedure is much higher than a routine 3D CT study. Low-dose scans for 4D with low-dose dynamic CT scans. It first applies the Karhunen-Love (KL) transform to the neighboring-CT datasets are usually acquired in treatment planning for lung cancer [1]-[3]. Thus, the radiation dose of 4D

  3. Ion-induced swelling of ODS ferritic alloy MA957 tubing to 500 dpa

    SciTech Connect (OSTI)

    Toloczko, Mychailo B.; Garner, F. A.; Voyevodin, V.; Bryk, V. V.; Borodin, O. V.; Melnichenko, V. V.; Kalchenko, A. S.

    2014-10-01

    In order to study the potential swelling behavior of the ODS ferritic alloy MA957 at very high dpa levels, specimens were prepared from pressurized tubes that were unirradiated archives of tubes previously irradiated in FFTF to doses as high at 110 dpa. These unirradiated specimens were irradiated with 1.8 MeV Cr+ ions to doses ranging from 100 to 500 dpa and examined by transmission electron microscopy. No coinjection of helium or hydrogen was employed. It was shown that compared to several ferritic/martensitic steels irradiated in the same facility, these tubes were rather resistant to void swelling, reaching a maximum value of only 4.5% at 500 dpa and 450C. In this fine-grained material, the distribution of swelling was strongly influenced by the presence of void denuded zones along the grain boundaries.

  4. Larger sized wire arrays on 1.5 MA Z-pinch generator

    SciTech Connect (OSTI)

    Safronova, A. S. Kantsyrev, V. L. Weller, M. E. Shlyaptseva, V. V. Shrestha, I. K. Esaulov, A. A. Stafford, A.; Chuvatin, A. S.; Coverdale, C. A.; Jones, B.

    2014-12-15

    Experiments on the UNR Zebra generator with Load Current Multiplier (LCM) allow for implosions of larger sized wire array loads than at standard current of 1 MA. Advantages of larger sized planar wire array implosions include enhanced energy coupling to plasmas, better diagnostic access to observable plasma regions, and more complex geometries of the wire loads. The experiments with larger sized wire arrays were performed on 1.5 MA Zebra with LCM (the anode-cathode gap was 1 cm, which is half the gap used in the standard mode). In particular, larger sized multi-planar wire arrays had two outer wire planes from mid-atomic-number wires to create a global magnetic field (gmf) and plasma flow between them. A modified central plane with a few Al wires at the edges was put in the middle between outer planes to influence gmf and to create Al plasma flow in the perpendicular direction (to the outer arrays plasma flow). Such modified plane has different number of empty slots: it was increased from 6 up to 10, hence increasing the gap inside the middle plane from 4.9 to 7.7 mm, respectively. Such load configuration allows for more independent study of the flows of L-shell mid-atomic-number plasma (between the outer planes) and K-shell Al plasma (which first fills the gap between the edge wires along the middle plane) and their radiation in space and time. We demonstrate that such configuration produces higher linear radiation yield and electron temperatures as well as advantages of better diagnostics access to observable plasma regions and how the load geometry (size of the gap in the middle plane) influences K-shell Al radiation. In particular, K-shell Al radiation was delayed compared to L-shell mid-atomic-number radiation when the gap in the middle plane was large enough (when the number of empty slots was increased up to ten)

  5. Dual energy CT-based characterization of x-ray attenuation properties of breast equivalent material plates

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Dual energy CT-based characterization of x-ray attenuation properties of breast equivalent material of the same nominal breast density equivalence (+ 1.5 HU). In addition, dual energy CT provided mono equivalent material, breast density, attenuation properties, linear attenuation coefficients, dual energy CT

  6. Statistical analysis of Multi-Material Components using Dual Energy CT Christoph Heinzl, Johann Kastner, Torsten Moller, and Eduard Groller

    E-Print Network [OSTI]

    Statistical analysis of Multi-Material Components using Dual Energy CT Christoph Heinzl, Johann plastics-metal components. The presented work makes use of dual energy CT data acquisi- tion for artefact pipeline based on the dual ex- posure technique of dual energy CT. After prefilter- ing and multi

  7. Abstract-Proton Computed Tomography (CT) has important implications for both image-guided diagnosis and radiation

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Abstract- Proton Computed Tomography (CT) has important implications for both image-guided diagnosis and radiation therapy. For diagnosis, the fact that the patient dose committed by proton CT and contrast, may be exploited in dose-critical clinical settings. Proton CT is also the most appropriate

  8. for Proton CT R. P. Johnson, Member, IEEE, V. Bashkirov, V. Giacometti, R. F. Hurley, P. Piersimoni,

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    for Proton CT R. P. Johnson, Member, IEEE, V. Bashkirov, V. Giacometti, R. F. Hurley, P. Piersimoni beam test results with our pre-clinical (Phase-II) head scanner developed for proton computed tomography (pCT). After extensive preclinical testing, pCT will be employed in support of proton therapy

  9. Abstract ---Computed tomography colonography (CTC) or CT-based virtual colonoscopy (VC) is an emerging tool for detection

    E-Print Network [OSTI]

    . The radiation dose is a major concern for screening application of CTC. In this work, we performed a simulation study to demonstrate a possible ultra low-dose CT technique for VC. The ultra low-dose abdominal CT by a filtered backprojection algorithm for the ultra low-dose CT images. The patient-specific virtual colon

  10. Noise properties of low-dose X-ray CT sinogram data in Radon space , Hongbing Lu2

    E-Print Network [OSTI]

    Noise properties of low-dose X-ray CT sinogram data in Radon space Jing Wang1 , Hongbing Lu2 statistical moments will improve low-dose CT image reconstruction for screening applications. Keywords: Low-dose]. However, clinical use of CT frequently exposes the patients to excessive X-ray radiation [4

  11. T4DT: Processing 4D CT scans of the Lungs Robert Fowler Joe Warren Yin Zhang

    E-Print Network [OSTI]

    Warren, Joe

    T4DT: Processing 4D CT scans of the Lungs Robert Fowler Joe Warren Yin Zhang Rice University technology for processing time-varying CT scans (4D CT) of the lungs. In particular, we propose to develop these tools to quantitatively assess the effectiveness of current treatments for lung cancer. #12;T4DT

  12. A knowledge-based cone-beam x-ray CT algorithm for dynamic volumetric cardiac imaging

    E-Print Network [OSTI]

    Wang, Ge

    A knowledge-based cone-beam x-ray CT algorithm for dynamic volumetric cardiac imaging Ge Wanga, and wider coverage with multislice/cone- beam CT indicate a great potential for dynamic volumetric imaging/ helical multislice/cone-beam CT approach for dynamic volumetric cardiac imaging. This approach assumes

  13. Investigation of statistical iterative reconstruction for dedicated breast CT

    SciTech Connect (OSTI)

    Makeev, Andrey; Glick, Stephen J.

    2013-08-15

    Purpose: Dedicated breast CT has great potential for improving the detection and diagnosis of breast cancer. Statistical iterative reconstruction (SIR) in dedicated breast CT is a promising alternative to traditional filtered backprojection (FBP). One of the difficulties in using SIR is the presence of free parameters in the algorithm that control the appearance of the resulting image. These parameters require tuning in order to achieve high quality reconstructions. In this study, the authors investigated the penalized maximum likelihood (PML) method with two commonly used types of roughness penalty functions: hyperbolic potential and anisotropic total variation (TV) norm. Reconstructed images were compared with images obtained using standard FBP. Optimal parameters for PML with the hyperbolic prior are reported for the task of detecting microcalcifications embedded in breast tissue.Methods: Computer simulations were used to acquire projections in a half-cone beam geometry. The modeled setup describes a realistic breast CT benchtop system, with an x-ray spectra produced by a point source and an a-Si, CsI:Tl flat-panel detector. A voxelized anthropomorphic breast phantom with 280 ?m microcalcification spheres embedded in it was used to model attenuation properties of the uncompressed woman's breast in a pendant position. The reconstruction of 3D images was performed using the separable paraboloidal surrogates algorithm with ordered subsets. Task performance was assessed with the ideal observer detectability index to determine optimal PML parameters.Results: The authors' findings suggest that there is a preferred range of values of the roughness penalty weight and the edge preservation threshold in the penalized objective function with the hyperbolic potential, which resulted in low noise images with high contrast microcalcifications preserved. In terms of numerical observer detectability index, the PML method with optimal parameters yielded substantially improved performance (by a factor of greater than 10) compared to FBP. The hyperbolic prior was also observed to be superior to the TV norm. A few of the best-performing parameter pairs for the PML method also demonstrated superior performance for various radiation doses. In fact, using PML with certain parameter values results in better images, acquired using 2 mGy dose, than FBP-reconstructed images acquired using 6 mGy dose.Conclusions: A range of optimal free parameters for the PML algorithm with hyperbolic and TV norm-based potentials is presented for the microcalcification detection task, in dedicated breast CT. The reported values can be used as starting values of the free parameters, when SIR techniques are used for image reconstruction. Significant improvement in image quality can be achieved by using PML with optimal combination of parameters, as compared to FBP. Importantly, these results suggest improved detection of microcalcifications can be obtained by using PML with lower radiation dose to the patient, than using FBP with higher dose.

  14. SU-E-J-43: Deformed Planning CT as An Electron Density Substitute for Cone-Beam CT

    SciTech Connect (OSTI)

    Mishra, K; Godley, A

    2014-06-01

    Purpose: To confirm that deforming the planning CT to the daily Cone-Beam CTs (CBCT) can provide suitable electron density for adaptive planning. We quantify the dosimetric difference between plans calculated on deformed planning CTs (DPCT) and daily CT-on-rails images (CTOR). CTOR is used as a test of the method as CTOR already contains accurate electron density to compare against. Methods: Five prostate only IMRT patients, each with five CTOR images, were selected and re-planned on Panther (Prowess Inc.) with a uniform 5 mm PTV expansion, prescribed 78 Gy. The planning CT was deformed to match each CTOR using ABAS (Elekta Inc.). Contours were drawn on the CTOR, and copied to the DPCT. The original treatment plan was copied to both the CTOR and DPCT, keeping the center of the prostate as the isocenter. The plans were then calculated using the collapsed cone heterogeneous dose engine of Prowess and typical DVH planning parameters used to compare them. Results: Each DPCT was visually compared to its CTOR with no differences observed. The agreement of the copied CTOR contours with the DPCT anatomy further demonstrated the deformation accuracy. The plans calculated using CTOR and DPCT were compared. Over the 25 plan pairs, the average difference between them for prostate D100, D98 and D95 were 0.5%, 0.2%, and 0.2%; PTV D98, D95 and mean dose: 0.3%, 0.2% and 0.3%; bladder V70, V60 and mean dose: 1.1%, 0.7%, and 0.2%; and rectum mean dose: 0.3%. (D100 is the dose covering 100% of the target; V70 is the volume of the organ receiving 70 Gy). Conclusion: We observe negligible difference between the dose calculated on the DPCT and the CTOR, implying that deformed planning CTs are a suitable substitute for electron density. The method can now be applied to CBCTs. Research version of Panther provided by Prowess Inc. Research version of ABAS provided by Elekta Inc.

  15. The Department of Mathematics at Rowan University is proud to announce the new BS/MA in Math degree track. In five (5) years, you can earn your BS and MA degrees in Mathematics!

    E-Print Network [OSTI]

    Hassen, Abdul

    of Courses 1st YEAR (Freshmen) 2nd YEAR (Sophomore) 3rd YEAR (Junior) 4th YEAR (Senior) YEAR ONE OF PROGRAM degree track. In five (5) years, you can earn your BS and MA degrees in Mathematics! Recommended Sequence FALL SEMESTER (15 s.h.) SPRING SEMESTER (15 s.h.) 5th YEAR (Graduate Student) YEAR TWO OF PROGRAM

  16. Schaal S (2002) Arm and hand movement control. In: Arbib MA (ed) The handbook of brain theory and neural networks, 2nd Edition. MIT Press, Cambridge, MA, pp 110-113

    E-Print Network [OSTI]

    Schaal, Stefan

    2002-01-01

    and neural networks, 2nd Edition. MIT Press, Cambridge, MA, pp 110-113 Arm and Hand Movement Control Stefan The control of arm and hand movements in human and nonhuman primates has fascinated researchers in psychology level of movement skills. Research towards an understanding of motor control can be approached

  17. Fill a Vacant MaPs or AUPE Research Manager/Supervisor Position Use this job aid to post for and hire for a vacant (or soon to be vacant) Fixed Term MaPS or AUPE

    E-Print Network [OSTI]

    Calgary, University of

    for and hire for a vacant (or soon to be vacant) Fixed Term MaPS or AUPE manager/supervisor position (funded which fields on the form open up for entry. In this example we are hiring for a vacant Fixed Term. Enter Position Information 3. Enter the Position Number of the vacant role you are looking to fill

  18. Fill a Vacant MaPS or AUPE Research Manager/Supervisor Position in Need of Use this job aid to change, post for and hire a vacant (or soon to be vacant) Fixed Term MaPS or AUPE

    E-Print Network [OSTI]

    Calgary, University of

    this job aid to change, post for and hire a vacant (or soon to be vacant) Fixed Term MaPS or AUPE manager are hiring a vacant Fixed Term position with changes required to the position attributes, so you will select Positioned Job With Changes. Enter Position Information 3. Enter the Position Number of the vacant role

  19. Comparison of Image Registration Based Measures of Regional Lung Ventilation from Dynamic Spiral CT with Xe-CT

    E-Print Network [OSTI]

    Ding, Kai; Fuld, Matthew K; Du, Kaifang; Christensen, Gary E; Hoffman, Eric A; Reinhardt, Joseph M

    2012-01-01

    Purpose: Regional lung volume change as a function of lung inflation serves as an index of parenchymal and airway status as well as an index of regional ventilation and can be used to detect pathologic changes over time. In this article, we propose a new regional measure of lung mechanics --- the specific air volume change by corrected Jacobian. Methods: 4DCT and Xe-CT data sets from four adult sheep are used in this study. Nonlinear, 3D image registration is applied to register an image acquired near end inspiration to an image acquired near end expiration. Approximately 200 annotated anatomical points are used as landmarks to evaluate registration accuracy. Three different registration-based measures of regional lung mechanics are derived and compared: the specific air volume change calculated from the Jacobian (SAJ); the specific air volume change calculated by the corrected Jacobian (SACJ); and the specific air volume change by intensity change (SAI). Results: After registration, the mean registration err...

  20. Patient dose estimation from CT scans at the Mexican National Neurology and Neurosurgery Institute

    SciTech Connect (OSTI)

    Alva-Snchez, Hctor

    2014-11-07

    In the radiology department of the Mexican National Institute of Neurology and Neurosurgery, a dedicated institute in Mexico City, on average 19.3 computed tomography (CT) examinations are performed daily on hospitalized patients for neurological disease diagnosis, control scans and follow-up imaging. The purpose of this work was to estimate the effective dose received by hospitalized patients who underwent a diagnostic CT scan using typical effective dose values for all CT types and to obtain the estimated effective dose distributions received by surgical and non-surgical patients. Effective patient doses were estimated from values per study type reported in the applications guide provided by the scanner manufacturer. This retrospective study included all hospitalized patients who underwent a diagnostic CT scan between 1 January 2011 and 31 December 2012. A total of 8777 CT scans were performed in this two-year period. Simple brain scan was the CT type performed the most (74.3%) followed by contrasted brain scan (6.1%) and head angiotomography (5.7%). The average number of CT scans per patient was 2.83; the average effective dose per patient was 7.9 mSv; the mean estimated radiation dose was significantly higher for surgical (9.1 mSv) than non-surgical patients (6.0 mSv). Three percent of the patients had 10 or more brain CT scans and exceeded the organ radiation dose threshold set by the International Commission on Radiological Protection for deterministic effects of the eye-lens. Although radiation patient doses from CT scans were in general relatively low, 187 patients received a high effective dose (>20 mSv) and 3% might develop cataract from cumulative doses to the eye lens.

  1. Fire patterns in central semiarid Argentina M.A. Fischer a,*, C.M. Di Bella a,b

    E-Print Network [OSTI]

    Nacional de San Luis, Universidad

    Fire patterns in central semiarid Argentina M.A. Fischer a,*, C.M. Di Bella a,b , E.G. Jobbgy b Cabaas S/N, Hurlingham (1686), Buenos Aires, Argentina b Consejo Nacional de Investigaciones Cientficas y Tcnicas (CONICET), Argentina c Grupo de Estudios Ambientales e IMASL, Universidad Nacional de San

  2. Invited talk A4.01, Symposium A: Compliant Energy Sources 2012 MRS Fall Meeting, Boston, MA, USA.

    E-Print Network [OSTI]

    Skorobogatiy, Maksim

    . This problem motivated many recent efforts into the development of soft electronics for truly wearable smartInvited talk A4.01, Symposium A: Compliant Energy Sources 2012 MRS Fall Meeting, Boston, MA, USA. Manuscript ID: 1445687 1 Flexible fiber batteries for applications in smart textiles Hang Qu*3 , Jean

  3. Proceedings of ANTEC `95, Boston, MA, May 7-11, 1995. MEASUREMENT OF THE FRICTION AND LUBRICITY

    E-Print Network [OSTI]

    Nairn, John A.

    Proceedings of ANTEC `95, Boston, MA, May 7-11, 1995. 1 MEASUREMENT OF THE FRICTION AND LUBRICITY role in patient comfort, it is useful to study the friction and lubricity properties of contact lenses and of the effects of lubricants, such as tear fluid, on the sliding motion. This paper describes a custom

  4. Page 1 of 2 Research Opportunity/Internship in Kenya for MA Student in Economics, Computer Science,

    E-Print Network [OSTI]

    Daraio, Chiara

    with high operational costs, adverse health effects, and low-quality lightning. Solar could provide a cost the data collected for an MA thesis. About us: Bonsai Systems is an ETH spin-off which develops sensing for development studies. Together we will use sensor technology to rigorously measure the impact of solar lights

  5. Joint Program on the Science and Policy of Global Change, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139.

    E-Print Network [OSTI]

    of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139. b MIT Energy Initiative, Massachusetts Institute: 617-253-6609, Fax: 617-253-9845. Economics of Energy & Environmental Policy, Vol. 1, No. 1. Copyright 2012 by the IAEE. All rights reserved. The Influence of Shale Gas on U.S. Energy and Environmental

  6. In Proceedings of the International Conference on Artificial Intelligence in Design, Worcester, MA, June In Proceedings of the 6th

    E-Print Network [OSTI]

    Tecuci, Gheorghe

    In Proceedings of the International Conference on Artificial Intelligence in Design, Worcester, MA, June 2000. 1 In Proceedings of the 6th International Conference on Artificial Intelligence in Design OF AN INTELLIGENT AGENT FOR THE DESIGN OF LOCAL AREA NETWORKS HADI REZAZAD*, GHEORGHE TECUCI Learning Agents

  7. An implicit finite-element model for 3D non-hydrostatic mesoscale ocean M.A. Maidana1

    E-Print Network [OSTI]

    Politcnica de Catalunya, Universitat

    An implicit finite-element model for 3D non-hydrostatic mesoscale ocean flows M.A. Maidana1 , J-dimensional, non-hydrostatic mesoscale ocean flows. The model considered here incorporates surface wind stress and the idea of using unstructured grids for modelling mesoscale ocean dynamics sounds very attractive given

  8. Monte Carlo data-driven tight frame for seismic data Shiwei Yu1, Jianwei Ma2 and Stanley Osher3

    E-Print Network [OSTI]

    Ferguson, Thomas S.

    -DDTF), and tested the trained filter bank derived from this process by conducting seismic data denoising preprocessing steps in the seismic data processing chain. Methods to attenuate random noise can generallyMonte Carlo data-driven tight frame for seismic data recovery Shiwei Yu1, Jianwei Ma2 and Stanley

  9. Rapport sur ma mission au Vietnam du 30 septembre au 7 octobre et du 28 au 29 octobre 2006

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Rapport sur ma mission au Vietnam du 30 septembre au 7 octobre et du 28 au 29 octobre 2006 Michel des trois branches de la composante de l'Universit Nationale du Vietnam Ho Chi Minh Ville (la mission au Cambodge du 8 au 27 octobre. Ce texte est consacr mes deux passages au Vietnam. Les textes

  10. An, Yanming, Professor, Languages. BA, 1982, MA, 1985, Fudan University (China); PhD, University of Michigan,

    E-Print Network [OSTI]

    Stuart, Steven J.

    253 Faculty An, Yanming, Professor, Languages. BA, 1982, MA, 1985, Fudan University (China); PhD, Environmental Engineering & Earth Sciences. BME, cole Polytechnique of Montral (Canada), 2005; MS, 2007, PhD & Biomolecular Engineering. BA, Clemson University, 1973; MS, 1977, PhD, 1981, University of Massachusetts

  11. Information Technologies Activity Report MA Y SE P T E M B E R 2 0 14

    E-Print Network [OSTI]

    Firestone, Jeremy

    Information Technologies Activity Report MA Y SE P T E M B E R 2 0 14 Farber HPC cluster now; Registrar's Office; Institutional Research; and 1 #12;Information Technologies Activity Report May available Building on the success of the Mills High-Performance Computing (HPC) cluster, UD Information

  12. DATA FUSION IN 2D AND 3D IMAGE PROCESSING: AN OVERVIEW Isabelle BLOCH, Henri MA^ITRE

    E-Print Network [OSTI]

    de Figueiredo, Luiz Henrique

    DATA FUSION IN 2D AND 3D IMAGE PROCESSING: AN OVERVIEW Isabelle BLOCH, Henri MA^ITRE Ecole of the art in image fusion, with an emphasis on the emergence of new techniques, often issued from other the aim of data fusion and its speci city when image informationhas to be combined, with emphasis

  13. IR laser ablative desulfurization of poly(1,4-phenylene sulfide) Sardar M.A. Durani a

    E-Print Network [OSTI]

    Masoudi, Husain M.

    IR laser ablative desulfurization of poly(1,4-phenylene sulfide) Sardar M.A. Durani a , Ehsan E,* a Center for Applied Physical Sciences, Research Institute, King Fahd University of Petroleum and Minerals similar to those in PPS. The PLAD of PPS thus represents a unique example of the desulfurization of S

  14. Iterative image-domain decomposition for dual-energy CT

    SciTech Connect (OSTI)

    Niu, Tianye; Dong, Xue; Petrongolo, Michael; Zhu, Lei

    2014-04-15

    Purpose: Dual energy CT (DECT) imaging plays an important role in advanced imaging applications due to its capability of material decomposition. Direct decomposition via matrix inversion suffers from significant degradation of image signal-to-noise ratios, which reduces clinical values of DECT. Existing denoising algorithms achieve suboptimal performance since they suppress image noise either before or after the decomposition and do not fully explore the noise statistical properties of the decomposition process. In this work, the authors propose an iterative image-domain decomposition method for noise suppression in DECT, using the full variance-covariance matrix of the decomposed images. Methods: The proposed algorithm is formulated in the form of least-square estimation with smoothness regularization. Based on the design principles of a best linear unbiased estimator, the authors include the inverse of the estimated variance-covariance matrix of the decomposed images as the penalty weight in the least-square term. The regularization term enforces the image smoothness by calculating the square sum of neighboring pixel value differences. To retain the boundary sharpness of the decomposed images, the authors detect the edges in the CT images before decomposition. These edge pixels have small weights in the calculation of the regularization term. Distinct from the existing denoising algorithms applied on the images before or after decomposition, the method has an iterative process for noise suppression, with decomposition performed in each iteration. The authors implement the proposed algorithm using a standard conjugate gradient algorithm. The method performance is evaluated using an evaluation phantom (Catphan600) and an anthropomorphic head phantom. The results are compared with those generated using direct matrix inversion with no noise suppression, a denoising method applied on the decomposed images, and an existing algorithm with similar formulation as the proposed method but with an edge-preserving regularization term. Results: On the Catphan phantom, the method maintains the same spatial resolution on the decomposed images as that of the CT images before decomposition (8 pairs/cm) while significantly reducing their noise standard deviation. Compared to that obtained by the direct matrix inversion, the noise standard deviation in the images decomposed by the proposed algorithm is reduced by over 98%. Without considering the noise correlation properties in the formulation, the denoising scheme degrades the spatial resolution to 6 pairs/cm for the same level of noise suppression. Compared to the edge-preserving algorithm, the method achieves better low-contrast detectability. A quantitative study is performed on the contrast-rod slice of Catphan phantom. The proposed method achieves lower electron density measurement error as compared to that by the direct matrix inversion, and significantly reduces the error variation by over 97%. On the head phantom, the method reduces the noise standard deviation of decomposed images by over 97% without blurring the sinus structures. Conclusions: The authors propose an iterative image-domain decomposition method for DECT. The method combines noise suppression and material decomposition into an iterative process and achieves both goals simultaneously. By exploring the full variance-covariance properties of the decomposed images and utilizing the edge predetection, the proposed algorithm shows superior performance on noise suppression with high image spatial resolution and low-contrast detectability.

  15. iLabs: A Scalable Architecture for Sharing Online Experiments V. Judson Harward, Massachusetts Institute of Technology, Cambridge, MA, jud@mit.edu

    E-Print Network [OSTI]

    del Alamo, Jess A.

    iLabs: A Scalable Architecture for Sharing Online Experiments Authors: V. Judson Harward, Massachusetts Institute of Technology, Cambridge, MA, jud@mit.edu Jess A. del Alamo, Massachusetts Institute of Technology, Cambridge, MA, alamo@mit.edu Vijay S. Choudary, Massachusetts Institute of Technology, Cambridge

  16. Art History MA Thesis Guidelines, August 2014 The following is a set of guidelines intended to assist art history graduate students in

    E-Print Network [OSTI]

    Frantz, Kyle J.

    Art History MA Thesis Guidelines, August 2014 The following is a set of guidelines intended to assist art history graduate students in conceptualizing and completing the thesis requirement for the MA degree. The department reserves the right to refuse to allow a student to do a thesis if that student has

  17. Non-equilibrium oxidation states of zirconium during early stages of metal oxidation Wen Ma, F. William Herbert, Sanjaya D. Senanayake, and Bilge Yildiz

    E-Print Network [OSTI]

    Yildiz, Bilge

    Non-equilibrium oxidation states of zirconium during early stages of metal oxidation Wen Ma, F.1116/1.4792068 The initial, thermal oxidation of zirconium at room temperature J. Appl. Phys. 96, 7126 (2004); 10 of zirconium during early stages of metal oxidation Wen Ma,1 F. William Herbert,1,2 Sanjaya D. Senanayake,3

  18. Money where it comes from and how we use it MA.02.01.06.07: Identifies pennies, nickels, dimes, and quarters, and their values.

    E-Print Network [OSTI]

    Money where it comes from and how we use it MA.02.01.06.07: Identifies pennies, nickels, dimes, and quarters, and their values. MA.02.01.07.01: Compares two sets of objects, including pennies, up to at least Activity 1 Physical Attributes: -give each student a penny, nickel, dime, and quarter -give students

  19. Exploiting parameter space in MOFs: a 20-fold enhancement of phosphate-ester hydrolysis with UiO-66-NH 2

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Katz, Michael J.; Moon, Su-Young; Mondloch, Joseph E.; Beyzavi, M. Hassan; Stephenson, Casey J.; Hupp, Joseph T.; Farha, Omar K.

    2015-02-24

    The hydrolysis of nerve agents is of primary concern due to the severe toxicity of these agents. Using a MOF-based catalyst (UiO-66), we have previously demonstrated that the hydrolysis can occur with relatively fast half-lives of 50 minutes. However, these rates are still prohibitively slow to be efficiently utilized for some practical applications (e.g., decontamination wipes used to clean exposed clothing/skin/vehicles). We thus turned our attention to derivatives of UiO-66 in order to probe the importance of functional groups on the hydrolysis rate. Three UiO-66 derivatives were explored; UiO-66-NO2 and UiO-66-(OH)2 showed little to no change in hydrolysis rate. However,moreUiO-66-NH2 showed a 20 fold increase in hydrolysis rate over the parent UiO-66 MOF. Half-lives of 1 minute were observed with this MOF. In order to probe the role of the amino moiety, we turned our attention to UiO-67, UiO-67-NMe2 and UiO-67-NH2. In these MOFs, the amino moiety is in close proximity to the zirconium node. We observed that UiO-67-NH2 is a faster catalyst than UiO-67 and UiO-67-NMe2. We conclude that the role of the amino moiety is to act as a proton-transfer agent during the catalytic cycle and not to hydrogen bond or to form a phosphorane intermediate.less

  20. Regulatory Safety Issues in the Structural Design Criteria of ASME Section III Subsection NH and for Very High Temperatures for VHTR & GEN IV

    SciTech Connect (OSTI)

    William J. ODonnell; Donald S. Griffin

    2007-05-07

    The objective of this task is to identify issues relevant to ASME Section III, Subsection NH [1], and related Code Cases that must be resolved for licensing purposes for VHTGRs (Very High Temperature Gas Reactor concepts such as those of PBMR, Areva, and GA); and to identify the material models, design criteria, and analysis methods that need to be added to the ASME Code to cover the unresolved safety issues. Subsection NH was originally developed to provide structural design criteria and limits for elevated-temperature design of Liquid Metal Fast Breeder Reactor (LMFBR) systems and some gas-cooled systems. The U.S. Nuclear Regulatory Commission (NRC) and its Advisory Committee for Reactor Safeguards (ACRS) reviewed the design limits and procedures in the process of reviewing the Clinch River Breeder Reactor (CRBR) for a construction permit in the late 1970s and early 1980s, and identified issues that needed resolution. In the years since then, the NRC and various contractors have evaluated the applicability of the ASME Code and Code Cases to high-temperature reactor designs such as the VHTGRs, and identified issues that need to be resolved to provide a regulatory basis for licensing. This Report describes: (1) NRC and ACRS safety concerns raised during the licensing process of CRBR , (2) how some of these issues are addressed by the current Subsection NH of the ASME Code; and (3) the material models, design criteria, and analysis methods that need to be added to the ASME Code and Code Cases to cover unresolved regulatory issues for very high temperature service.

  1. Low-Dose Spiral CT Scans for Early Lung Cancer Detection

    Broader source: Energy.gov [DOE]

    Low-dose spiral computed tomography (CT) scanning is a noninvasive medical imaging test that has been used for the early detection of lung cancer for over 16 years (Sone et al. 1998; Henschke et.al. 1999).

  2. Frequency and patterns of abnormality detected by iodine-123 amine emission CT after cerebral infarction

    SciTech Connect (OSTI)

    Brott, T.G.; Gelfand, M.J.; Williams, C.C.; Spilker, J.A.; Hertzberg, V.S.

    1986-03-01

    Single photon emission computed tomography (SPECT) was performed in 31 patients with cerebral infarction and 13 who had had transient ischemic attacks, using iodine-123-labeled N,N,N'-trimethyl-N'-(2-hydroxyl-3-methyl-5-iodobenzyl)-1,3-propanediamin e (I-123-HIPDM) as the radiopharmaceutical. SPECT scans were compared with computed tomographic (CT) scans. SPECT was as sensitive as CT in detecting cerebral infarction (94% vs. 84%). The abnormalities were larger on the SPECT scans than on the CT scans in 19 cases, equal in seven, and smaller in five (SPECT abnormalities greater than or equal to CT abnormalities in 86% of cases). Fifteen of 30 patients with hemispheric infarction had decreased perfusion (decreased uptake of I-123-HIPDM) to the cerebellar hemisphere contralateral to the cerebral hemisphere involved by the infarction (crossed cerebellar diaschisis). Nine of these 15 patients had major motor deficits, while only one of the 15 without crossed cerebellar diaschisis had a major motor deficit.

  3. 10 A.M. CT TODAY: On-the Record Conference Call for Obama Administrati...

    Broader source: Energy.gov (indexed) [DOE]

    White House Rural Economic Council Promotes Production of Next Generation Biofuels, Job Creation and Economic Opportunity WASHINGTON, Aug. 16, 2011 - Today at 10 a.m. CT (11 a.m....

  4. Finite Element Analysis of Ballistic Penetration of Plain Weave Twaron CT709 Fabrics: A Parametric Study

    E-Print Network [OSTI]

    Gogineni, Sireesha

    2011-10-21

    The ballistic impact of Twaron CT709 plain weave fabrics is studied using an explicit finite element method. Many existing approximations pertaining to woven fabrics cannot adequately represent strain rate-dependent behavior exhibited by the Twaron...

  5. Preparation of Single Phase Films of CH3NH3Pb(I1-xBrx)3 with Sharp Optical Band Edges

    E-Print Network [OSTI]

    Sadhanala, Aditya; Deschler, Felix; Thomas, Tudor H; Dutton, Sin E.; Goedel, Karl C.; Hanusch, Fabian C.; Lai, May L.; Steiner, Ullrich; Bein, Thomas; Docampo, Pablo; Cahen, David; Friend, Richard H.

    2014-07-09

    ?inorganic perovskite (CH3NH3PbI3?xClx) solar cells now show photovoltaic (PV) performance1?4 approaching 18%,5,6 and high charge-carrier mobilities.7 Perovskite films have also shown promising photoluminescence quantum efficiencies (PLQEs) of more than 70% and lasing... .; Grat?zel, M.; Mhaisalkar, S.; Sum, T. C. Low-Temperature Solution- Processed Wavelength-Tunable Perovskites for Lasing. Nat. Mater. 2014, 13, 476?480. (9) Deschler, F.; Price, M.; Pathak, S.; Klintberg, L. E.; Jarausch, D.- D.; Higler, R.; Hu?ttner, S...

  6. Synthesis and Evaluation of Cu/SAPO-34 Catalysts for NH3-SCR 2: Solid-state Ion Exchange and One-pot Synthesis

    SciTech Connect (OSTI)

    Gao, Feng; Walter, Eric D.; Washton, Nancy M.; Szanyi, Janos; Peden, Charles HF

    2015-01-01

    Cu-SAPO-34 catalysts are synthesized using two methods: solid-state ion exchange (SSIE) and one-pot synthesis. SSIE is conducted by calcining SAPO-34/CuO mixtures at elevated temperatures. For the one-pot synthesis method, Cu-containing chemicals (CuO and CuSO4) are added during gel preparation. A high-temperature calcination step is also needed for this method. Catalysts are characterized with surface area/pore volume measurements, temperature programmed reduction (TPR), electron paramagnetic resonance (EPR) and nuclear magnetic resonance (NMR) spectroscopies, and scanning electron microscopy (SEM). Catalytic properties are examined using standard ammonia selective catalytic reduction (NH3-SCR) and ammonia oxidation reactions. In Cu-SAPO-34 samples formed using SSIE, Cu presents both as isolated Cu2+ ions and unreacted CuO. The former is highly active and selective in NH3-SCR, while the latter catalyzes a side reaction; notably, the non-selective oxidation of NH3 above 350 C. Using the one-pot method followed by a high-temperature aging treatment, it is possible to form Cu SAPO-34 samples with predominately isolated Cu2+ ions at low Cu loadings. However at much higher Cu loadings, isolated Cu2+ ions that bind weakly with the CHA framework and CuO clusters also form. These Cu moieties are very active in catalyzing non-selective NH3 oxidation above 350 C. Low-temperature reaction kinetics indicate that Cu-SAPO-34 samples formed using SSIE have core-shell structures where Cu is enriched in the shell layers; while Cu is more evenly distributed within the one-pot samples. Reaction kinetics also suggest that at low temperatures, the local environment next to Cu2+ ion centers plays little role on the overall catalytic properties. The authors gratefully acknowledge the US Department of Energy (DOE), Energy Efficiency and Renewable Energy, Vehicle Technologies Office for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOEs Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle under contract number DE-AC05-76RL01830. The authors also thank Shari Li (PNNL) for surface area/pore volume measurements, and Bruce W. Arey (PNNL) for SEM measurements. Discussions with Drs. A. Yezerets, K. Kamasamudram, J.H. Li, N. Currier and J.Y. Luo from Cummins, Inc. and H.Y. Chen and H. Hess from Johnson-Matthey are greatly appreciated.

  7. The redMaPPer Galaxy Cluster Catalog From DES Science Verification Data

    E-Print Network [OSTI]

    Rykoff, E S; Hollowood, D; Bermeo-Hernandez, A; Jeltema, T; Mayers, J; Romer, A K; Rooney, P; Saro, A; Cervantes, C Vergara; Wilcox, H; Abbott, T M C; Abdalla, F B; Allam, S; Annis, J; Benoit-Lvy, A; Bernstein, G M; Bertin, E; Brooks, D; Burke, D L; Capozzi, D; Rosell, A Carnero; Kind, M Carrasco; Castander, F J; Childress, M; Collins, C A; Cunha, C E; D'Andrea, C B; da Costa, L N; Davis, T M; Desai, S; Diehl, H T; Dietrich, J P; Doel, P; Evrard, A E; Finley, D A; Flaugher, B; Fosalba, P; Frieman, J; Glazebrook, K; Goldstein, D A; Gruen, D; Gruendl, R A; Gutierrez, G; Hilton, M; Honscheid, K; Hoyle, B; James, D J; Kay, S T; Kuehn, K; Kuropatkin, N; Lahav, O; Lewis, G F; Lidman, C; Lima, M; Maia, M A G; Mann, R G; Marshall, J L; Martini, P; Melchior, P; Miller, C J; Miquel, R; Mohr, J J; Nichol, R C; Nord, B; Ogando, R; Plazas, A A; Reil, K; Sahln, M; Sanchez, E; Santiago, B; Scarpine, V; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Sobreira, F; Stott, J P; Suchyta, E; Swanson, M E C; Tarle, G; Thomas, D; Tucker, D; Viana, P T P; Vikram, V; Walker, A R; Zhang, Y

    2016-01-01

    We describe updates to the redMaPPer algorithm, a photometric red-sequence cluster finder specifically designed for large photometric surveys. The updated algorithm is applied to $150\\,\\mathrm{deg}^2$ of Science Verification (SV) data from the Dark Energy Survey (DES), and to the Sloan Digital Sky Survey (SDSS) DR8 photometric data set. The DES SV catalog is locally volume limited, and contains 786 clusters with richness $\\lambda>20$ (roughly equivalent to $M_{\\mathrm{500c}}\\gtrsim10^{14}\\,h_{70}^{-1}\\,M_{\\odot}$) and $0.2

  8. Lung nodule detection in low-dose and high-resolution CT scans

    E-Print Network [OSTI]

    Delogu, P; Gori, I; Preite Martnez, A; Retico, A; Tata, A

    2006-01-01

    We are developing a computer-aided detection (CAD) system for the identification of small pulmonary nodules in screening CT scans. The main modules of our system, i.e. a dot-enhancement filter for nodule candidate selection and a neural classifier for false positive finding reduction, are described. The preliminary results obtained on the so-far collected database of lung CT are discussed.

  9. The effects of mapping CT images to Monte Carlo materials on GEANT4 proton simulation accuracy

    SciTech Connect (OSTI)

    Barnes, Samuel; McAuley, Grant; Slater, James; Wroe, Andrew

    2013-04-15

    Purpose: Monte Carlo simulations of radiation therapy require conversion from Hounsfield units (HU) in CT images to an exact tissue composition and density. The number of discrete densities (or density bins) used in this mapping affects the simulation accuracy, execution time, and memory usage in GEANT4 and other Monte Carlo code. The relationship between the number of density bins and CT noise was examined in general for all simulations that use HU conversion to density. Additionally, the effect of this on simulation accuracy was examined for proton radiation. Methods: Relative uncertainty from CT noise was compared with uncertainty from density binning to determine an upper limit on the number of density bins required in the presence of CT noise. Error propagation analysis was also performed on continuously slowing down approximation range calculations to determine the proton range uncertainty caused by density binning. These results were verified with Monte Carlo simulations. Results: In the presence of even modest CT noise (5 HU or 0.5%) 450 density bins were found to only cause a 5% increase in the density uncertainty (i.e., 95% of density uncertainty from CT noise, 5% from binning). Larger numbers of density bins are not required as CT noise will prevent increased density accuracy; this applies across all types of Monte Carlo simulations. Examining uncertainty in proton range, only 127 density bins are required for a proton range error of <0.1 mm in most tissue and <0.5 mm in low density tissue (e.g., lung). Conclusions: By considering CT noise and actual range uncertainty, the number of required density bins can be restricted to a very modest 127 depending on the application. Reducing the number of density bins provides large memory and execution time savings in GEANT4 and other Monte Carlo packages.

  10. Josephine studied in Havard (MA) for her BSc and then did her PhD at UCBerkeley, both in Physics. In 2003 she started a postdoctoral

    E-Print Network [OSTI]

    Pouliot, Jean

    , Low-dose megavoltage cone-beam CT for radiation therapy. Int. J. Radiation Oncology Biol. Phys., 61, California, B.A. Physics, 1997, Harvard University. Research Dose Reconstruction with MV Cone Beam.F., Chen J., Xia P. and Pouliot J., Patient Dose for Megavoltage Cone-Beam CT Imaging, Int. J. Radiation

  11. Semi-automatic delineation using weighted CT-MRI registered images for radiotherapy of nasopharyngeal cancer

    SciTech Connect (OSTI)

    Fitton, I. [European Georges Pompidou Hospital, Department of Radiology, 20 rue Leblanc, 75015, Paris (France); Cornelissen, S. A. P. [Image Sciences Institute, UMC, Department of Radiology, P.O. Box 85500, 3508 GA Utrecht (Netherlands); Duppen, J. C.; Rasch, C. R. N.; Herk, M. van [The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Department of Radiotherapy, Plesmanlaan 121, 1066 CX Amsterdam (Netherlands); Steenbakkers, R. J. H. M. [University Medical Center Groningen, Department of Radiation Oncology, Hanzeplein 1, 9713 GZ Groningen (Netherlands); Peeters, S. T. H. [UZ Gasthuisberg, Herestraat 49, 3000 Leuven, Belgique (Belgium); Hoebers, F. J. P. [Maastricht University Medical Center, Department of Radiation Oncology (MAASTRO clinic), GROW School for Oncology and Development Biology Maastricht, 6229 ET Maastricht (Netherlands); Kaanders, J. H. A. M. [UMC St-Radboud, Department of Radiotherapy, Geert Grooteplein 32, 6525 GA Nijmegen (Netherlands); Nowak, P. J. C. M. [ERASMUS University Medical Center, Department of Radiation Oncology,Groene Hilledijk 301, 3075 EA Rotterdam (Netherlands)

    2011-08-15

    Purpose: To develop a delineation tool that refines physician-drawn contours of the gross tumor volume (GTV) in nasopharynx cancer, using combined pixel value information from x-ray computed tomography (CT) and magnetic resonance imaging (MRI) during delineation. Methods: Operator-guided delineation assisted by a so-called ''snake'' algorithm was applied on weighted CT-MRI registered images. The physician delineates a rough tumor contour that is continuously adjusted by the snake algorithm using the underlying image characteristics. The algorithm was evaluated on five nasopharyngeal cancer patients. Different linear weightings CT and MRI were tested as input for the snake algorithm and compared according to contrast and tumor to noise ratio (TNR). The semi-automatic delineation was compared with manual contouring by seven experienced radiation oncologists. Results: A good compromise for TNR and contrast was obtained by weighing CT twice as strong as MRI. The new algorithm did not notably reduce interobserver variability, it did however, reduce the average delineation time by 6 min per case. Conclusions: The authors developed a user-driven tool for delineation and correction based a snake algorithm and registered weighted CT image and MRI. The algorithm adds morphological information from CT during the delineation on MRI and accelerates the delineation task.

  12. AFFECTS OF MECHANICAL MILLING AND METAL OXIDE ADDITIVES ON SORPTION KINETICS OF 1:1 LiNH2/MgH2 MIXTURE

    SciTech Connect (OSTI)

    Erdy, C.; Anton, D.; Gray, J.

    2010-12-08

    The destabilized complex hydride system composed of LiNH{sub 2}:MgH{sub 2} (1:1 molar ratio) is one of the leading candidates of hydrogen storage with a reversible hydrogen storage capacity of 8.1 wt%. A low sorption enthalpy of {approx}32 kJ/mole H{sub 2} was first predicted by Alapati et al. utilizing first principle density function theory (DFT) calculations and has been subsequently confirmed empirically by Lu et al. through differential thermal analysis (DTA). This enthalpy suggests that favorable sorption kinetics should be obtainable at temperatures in the range of 160 C to 200 C. Preliminary experiments reported in the literature indicate that sorption kinetics are substantially lower than expected in this temperature range despite favorable thermodynamics. Systematic isothermal and isobaric sorption experiments were performed using a Sievert's apparatus to form a baseline data set by which to compare kinetic results over the pressure and temperature range anticipated for use of this material as a hydrogen storage media. Various material preparation methods and compositional modifications were performed in attempts to increase the kinetics while lowering the sorption temperatures. This paper outlines the results of these systematic tests and describes a number of beneficial additions which influence kinetics as well as NH{sub 3} formation.

  13. Dose uncertainty due to computed tomography ,,CT... slice thickness in CT-based high dose rate brachytherapy of the prostate cancer

    E-Print Network [OSTI]

    Pouliot, Jean

    brachytherapy of the prostate cancer Yongbok Kim,a) I-Chow Joe Hsu, Etienne Lessard, and Jean Pouliot Department tomography CT -based high dose rate HDR brachytherapy, the uncertainty in the localization in Medicine. DOI: 10.1118/1.1785454 Key words: high dose rate brachytherapy, computed tomography, prostate

  14. Plasmonic photovoltaics K.R. Catchpole1,2, S. Pillai2, M.A. Green2,

    E-Print Network [OSTI]

    Polman, Albert

    of the worlds energy using 8% efficient photovoltaics. The Solar Resource Average solar irradiance, W/m2. #12 of photovoltaics 50% of the cost of solar modules is the cost of the silicon wafers (300m thick). This canUNSW Plasmonic photovoltaics K.R. Catchpole1,2, S. Pillai2, M.A. Green2, E. Verhagen1, L. Kuipers1

  15. Character of the diatom assemblage spanning a depositional transition in the Eastern Equatorial Pacific Ocean at 6.6 Ma

    E-Print Network [OSTI]

    Brookshire, Brian Neville, Jr.

    2005-02-17

    in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2003 Major Subject: Oceanography CHARACTER OF THE DIATOM ASSEMBLAGE SPANNING A DEPOSITIONAL TRANSITION IN THE EASTERN EQUATORIAL PACIFIC OCEAN AT 6.6 Ma A Thesis... by BRIAN NEVILLE BROOKSHIRE JR. Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by...

  16. MA 547 Midterm Exam 1 02/14/2013 11:45am-1:00pm

    E-Print Network [OSTI]

    Pang, Tao

    MA 547 Midterm Exam 1 02/14/2013 11:45am-1:00pm Name: Student ID: Remark: This is a close-book test price can be doubled or decreased by one-fourth. In other words, Si+1 = 2Si or Si+1 = 3 4 Si for i = 0 is the optimal strategy to exercise the option? End of the Exam 2 #12;

  17. Two Proposals for Critically Editing the Texts of the rNying ma'i rGyud 'bum

    E-Print Network [OSTI]

    Cathy Cantwell; Mayer, Rob

    2006-01-01

    the rNying ma'i rGyud 'bum1 Cathy Cantwell & Rob Mayer,University of Oxford Abstract: We propose two new methods for criticallyediting Tibetan texts that take advantage of contemporaryelectronic developments in presentation of data, and incollaborative... at the outset that our proposal isaimed at complementing TEI, not at displacing it).7 Many of these electronic 1 Funding from the Arts and Humanities Research Council of the UK madepossible the research on which...

  18. MO-E-17A-03: Monte Carlo CT Dose Calculation: A Comparison Between Experiment and Simulation Using ARCHER-CT

    SciTech Connect (OSTI)

    Liu, T; Du, X; Su, L; Gao, Y; Ji, W; Xu, X; Zhang, D; Shi, J; Liu, B; Kalra, M

    2014-06-15

    Purpose: To compare the CT doses derived from the experiments and GPU-based Monte Carlo (MC) simulations, using a human cadaver and ATOM phantom. Methods: The cadaver of an 88-year old male and the ATOM phantom were scanned by a GE LightSpeed Pro 16 MDCT. For the cadaver study, the Thimble chambers (Model 105?0.6CT and 106?0.6CT) were used to measure the absorbed dose in different deep and superficial organs. Whole-body scans were first performed to construct a complete image database for MC simulations. Abdomen/pelvis helical scans were then conducted using 120/100 kVps, 300 mAs and a pitch factor of 1.375:1. For the ATOM phantom study, the OSL dosimeters were used and helical scans were performed using 120 kVp and x, y, z tube current modulation (TCM). For the MC simulations, sufficient particles were run in both cases such that the statistical errors of the results by ARCHER-CT were limited to 1%. Results: For the human cadaver scan, the doses to the stomach, liver, colon, left kidney, pancreas and urinary bladder were compared. The difference between experiments and simulations was within 19% for the 120 kVp and 25% for the 100 kVp. For the ATOM phantom scan, the doses to the lung, thyroid, esophagus, heart, stomach, liver, spleen, kidneys and thymus were compared. The difference was 39.2% for the esophagus, and within 16% for all other organs. Conclusion: In this study the experimental and simulated CT doses were compared. Their difference is primarily attributed to the systematic errors of the MC simulations, including the accuracy of the bowtie filter modeling, and the algorithm to generate voxelized phantom from DICOM images. The experimental error is considered small and may arise from the dosimeters. R01 grant (R01EB015478) from National Institute of Biomedical Imaging and Bioengineering.

  19. Estimated cumulative radiation dose from PET/CT in children with malignancies: a 5-year retrospective review

    E-Print Network [OSTI]

    2010-01-01

    both PET and CT studies. The ALARA principle must be appliedprotocols that follow the ALARA principle (as low asis necessary to apply the ALARA principle in the radiation

  20. Calculation of exact vibrational spectra for P{sub 2}O and CH{sub 2}NH using a phase space wavelet basis

    SciTech Connect (OSTI)

    Halverson, Thomas, E-mail: tom.halverson@ttu.edu; Poirier, Bill [Department of Chemistry and Biochemistry and Department of Physics, Texas Tech University, P.O. Box 41061, Lubbock, Texas 79409-1061 (United States)

    2014-05-28

    Exact quantum dynamics calculations of vibrational spectra are performed for two molecular systems of widely varying dimensionality (P{sub 2}O and CH{sub 2}NH), using a momentum-symmetrized Gaussian basis. This basis has been previously shown to defeat exponential scaling of computational cost with system dimensionality. The calculations were performed using the new SWITCHBLADE black-box code, which utilizes both dimensionally independent algorithms and massive parallelization to compute very large numbers of eigenstates for any fourth-order force field potential, in a single calculation. For both molecules considered here, many thousands of vibrationally excited states were computed, to at least an intermediate level of accuracy (tens of wavenumbers). Future modifications to increase the accuracy to spectroscopic levels, along with other potential future improvements of the new code, are also discussed.

  1. Qualifying composition dependent p and n self-doping in CH{sub 3}NH{sub 3}PbI{sub 3}

    SciTech Connect (OSTI)

    Wang, Qi; Shao, Yuchuan; Huang, Jinsong; Xie, Haipeng; Lyu, Lu; Liu, Xiaoliang; Gao, Yongli

    2014-10-20

    We report the observation of self-doping in perovskite. CH{sub 3}NH{sub 3}PbI{sub 3} was found to be either n- or p-doped by changing the ratio of methylammonium halide (MAI) and lead iodine (PbI{sub 2}) which are the two precursors for perovskite formation. MAI-rich and PbI{sub 2}-rich perovskite films are p and n self-doped, respectively. Thermal annealing can convert the p-type perovskite to n-type by removing MAI. The carrier concentration varied as much as six orders of magnitude. A clear correlation between doping level and device performance was also observed.

  2. SU-E-I-89: Assessment of CT Radiation Dose and Image Quality for An Automated Tube Potential Selection Algorithm Using Pediatric Anthropomorphic and ACR Phantoms

    SciTech Connect (OSTI)

    Mahmood, U; Erdi, Y; Wang, W

    2014-06-01

    Purpose: To assess the impact of General Electrics automated tube potential algorithm, kV assist (kVa) on radiation dose and image quality, with an emphasis on optimizing protocols based on noise texture. Methods: Radiation dose was assessed by inserting optically stimulated luminescence dosimeters (OSLs) throughout the body of a pediatric anthropomorphic phantom (CIRS). The baseline protocol was: 120 kVp, 80 mA, 0.7s rotation time. Image quality was assessed by calculating the contrast to noise ratio (CNR) and noise power spectrum (NPS) from the ACR CT accreditation phantom. CNRs were calculated according to the steps described in ACR CT phantom testing document. NPS was determined by taking the 3D FFT of the uniformity section of the ACR phantom. NPS and CNR were evaluated with and without kVa and for all available adaptive iterative statistical reconstruction (ASiR) settings, ranging from 0 to 100%. Each NPS was also evaluated for its peak frequency difference (PFD) with respect to the baseline protocol. Results: For the baseline protocol, CNR was found to decrease from 0.460 0.182 to 0.420 0.057 when kVa was activated. When compared against the baseline protocol, the PFD at ASiR of 40% yielded a decrease in noise magnitude as realized by the increase in CNR = 0.620 0.040. The liver dose decreased by 30% with kVa activation. Conclusion: Application of kVa reduces the liver dose up to 30%. However, reduction in image quality for abdominal scans occurs when using the automated tube voltage selection feature at the baseline protocol. As demonstrated by the CNR and NPS analysis, the texture and magnitude of the noise in reconstructed images at ASiR 40% was found to be the same as our baseline images. We have demonstrated that 30% dose reduction is possible when using 40% ASiR with kVa in pediatric patients.

  3. SU-E-I-68: Practical Considerations On Implementation of the Image Gently Pediatric CT Protocols

    SciTech Connect (OSTI)

    Zhang, J; Adams, C; Lumby, C; Dillon, J [University of Kentucky, Lexington, KY (United States); Woods, E [University of kentucky, Lexington, KY (United States); Richer, E [University of Kentucky, Lexington, Lexington (United States)

    2014-06-01

    Purpose: One limitation associated with the Image Gently pediatric CT protocols is practical implementation of the recommended manual techniques. Inconsistency as a result of different practice is a possibility among technologist. An additional concern is the added risk of data error that would result in over or underexposure. The Automatic Exposure Control (AEC) features automatically reduce radiation for children. However, they do not work efficiently for the patients of very small size and relative large size. This study aims to implement the Image Gently pediatric CT protocols in the practical setting while maintaining the use of AEC features for pediatric patients of varying size. Methods: Anthropomorphological abdomen phantoms were scanned in a CT scanner using the Image Gently pediatric protocols, the AEC technique with a fixed adult baseline, and automatic protocols with various baselines. The baselines were adjusted corresponding to patient age, weight and posterioranterior thickness to match the Image Gently pediatric CT manual techniques. CTDIvol was recorded for each examination. Image noise was measured and recorded for image quality comparison. Clinical images were evaluated by pediatric radiologists. Results: By adjusting vendor default baselines used in the automatic techniques, radiation dose and image quality can match those of the Image Gently manual techniques. In practice, this can be achieved by dividing pediatric patients into three major groups for technologist reference: infant, small child, and large child. Further division can be done but will increase the number of CT protocols. For each group, AEC can efficiently adjust acquisition techniques for children. This implementation significantly overcomes the limitation of the Image Gently manual techniques. Conclusion: Considering the effectiveness in clinical practice, Image Gently Pediatric CT protocols can be implemented in accordance with AEC techniques, with adjusted baselines, to achieve the goal of providing the most appropriate radiation dose for pediatric patients of varying sizes.

  4. Resolution enhancement of lung 4D-CT data using multiscale interphase iterative nonlocal means

    SciTech Connect (OSTI)

    Zhang Yu [School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China and Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Yap, Pew-Thian; Wu Guorong [Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Feng Qianjin; Chen Wufan [School of Biomedical Engineering, Southern Medical University, Guangzhou 510515 (China); Lian Jun [Department of Radiation Oncology, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Shen Dinggang [Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Department of Brain and Cognitive Engineering, Korea University, Seoul 136-713 (Korea, Republic of)

    2013-05-15

    Purpose: Four-dimensional computer tomography (4D-CT) has been widely used in lung cancer radiotherapy due to its capability in providing important tumor motion information. However, the prolonged scanning duration required by 4D-CT causes considerable increase in radiation dose. To minimize the radiation-related health risk, radiation dose is often reduced at the expense of interslice spatial resolution. However, inadequate resolution in 4D-CT causes artifacts and increases uncertainty in tumor localization, which eventually results in extra damages of healthy tissues during radiotherapy. In this paper, the authors propose a novel postprocessing algorithm to enhance the resolution of lung 4D-CT data. Methods: The authors' premise is that anatomical information missing in one phase can be recovered from the complementary information embedded in other phases. The authors employ a patch-based mechanism to propagate information across phases for the reconstruction of intermediate slices in the longitudinal direction, where resolution is normally the lowest. Specifically, the structurally matching and spatially nearby patches are combined for reconstruction of each patch. For greater sensitivity to anatomical details, the authors employ a quad-tree technique to adaptively partition the image for more fine-grained refinement. The authors further devise an iterative strategy for significant enhancement of anatomical details. Results: The authors evaluated their algorithm using a publicly available lung data that consist of 10 4D-CT cases. The authors' algorithm gives very promising results with significantly enhanced image structures and much less artifacts. Quantitative analysis shows that the authors' algorithm increases peak signal-to-noise ratio by 3-4 dB and the structural similarity index by 3%-5% when compared with the standard interpolation-based algorithms. Conclusions: The authors have developed a new algorithm to improve the resolution of 4D-CT. It outperforms the conventional interpolation-based approaches by producing images with the markedly improved structural clarity and greatly reduced artifacts.

  5. Resolution enhancement of lung 4D-CT via group-sparsity

    SciTech Connect (OSTI)

    Bhavsar, Arnav; Wu, Guorong; Shen, Dinggang [Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)] [Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Lian, Jun [Department of Radiation Oncology, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)] [Department of Radiation Oncology, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

    2013-12-15

    Purpose: 4D-CT typically delivers more accurate information about anatomical structures in the lung, over 3D-CT, due to its ability to capture visual information of the lung motion across different respiratory phases. This helps to better determine the dose during radiation therapy for lung cancer. However, a critical concern with 4D-CT that substantially compromises this advantage is the low superior-inferior resolution due to less number of acquired slices, in order to control the CT radiation dose. To address this limitation, the authors propose an approach to reconstruct missing intermediate slices, so as to improve the superior-inferior resolution.Methods: In this method the authors exploit the observation that sampling information across respiratory phases in 4D-CT can be complimentary due to lung motion. The authors approach uses this locally complimentary information across phases in a patch-based sparse-representation framework. Moreover, unlike some recent approaches that treat local patches independently, the authors approach employs the group-sparsity framework that imposes neighborhood and similarity constraints between patches. This helps in mitigating the trade-off between noise robustness and structure preservation, which is an important consideration in resolution enhancement. The authors discuss the regularizing ability of group-sparsity, which helps in reducing the effect of noise and enables better structural localization and enhancement.Results: The authors perform extensive experiments on the publicly available DIR-Lab Lung 4D-CT dataset [R. Castillo, E. Castillo, R. Guerra, V. Johnson, T. McPhail, A. Garg, and T. Guerrero, A framework for evaluation of deformable image registration spatial accuracy using large landmark point sets, Phys. Med. Biol. 54, 18491870 (2009)]. First, the authors carry out empirical parametric analysis of some important parameters in their approach. The authors then demonstrate, qualitatively as well as quantitatively, the ability of their approach to achieve more accurate and better localized results over bicubic interpolation as well as a related state-of-the-art approach. The authors also show results on some datasets with tumor, to further emphasize the clinical importance of their method.Conclusions: The authors have proposed to improve the superior-inferior resolution of 4D-CT by estimating intermediate slices. The authors approach exploits neighboring constraints in the group-sparsity framework, toward the goal of achieving better localization and noise robustness. The authors results are encouraging, and positively demonstrate the role of group-sparsity for 4D-CT resolution enhancement.

  6. 1682 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 31, NO. 9, SEPTEMBER 2012 Low-Dose X-ray CT Reconstruction

    E-Print Network [OSTI]

    Wang, Ge

    1682 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 31, NO. 9, SEPTEMBER 2012 Low-Dose X-ray CT and other diseases. How to reduce radiation dose while maintaining the diagnostic per- formance is a major- straint in terms of total variation (TV) minimization has already led to promising results for low-dose CT

  7. Database-Assisted Low-Dose CT Image Restoration Wei Xu, Sungsoo Ha and Klaus Mueller, Senior Member, IEEE

    E-Print Network [OSTI]

    Database-Assisted Low-Dose CT Image Restoration Wei Xu, Sungsoo Ha and Klaus Mueller, Senior Member, IEEE Abstract The image quality of low-dose CT scans typically suffers greatly from the limited utilization of X-ray radiation. Although the harmful effects to patient health are reduced, the low quality

  8. Manifold Learning for 4D CT Reconstruction of the Lung Manfred Georg*, Richard Souvenir, Andrew Hope, Robert Pless*

    E-Print Network [OSTI]

    Pless, Robert

    Manifold Learning for 4D CT Reconstruction of the Lung Manfred Georg*, Richard Souvenir, Andrew, Canada Andrew.Hope@rmp.uhn.on.ca Abstract Computed Tomography is used to create models of lung dynamics because it provides high contrast images of lung tissue. Creating 4D CT models which capture dynamics

  9. USPSTF Recommends Low-Dose CT Screening for Heavy Smoke Published on Cancer Network (http://www.cancernetwork.com)

    E-Print Network [OSTI]

    Serfling, Robert

    remains the leading cause of cancer death in the United States, and is the third most common of all radiography, and found an overall reduction in death from any cause in the CT group of 6.7% (95% CI, 1, lie largely in the high rates of false positives. A total of 96.4% of the positive low-dose CT results

  10. MA 162, MA 1621 - MA 162 N Exam 1

    E-Print Network [OSTI]

    Feb 10, 2015 ... 10' Chalkboard. Audio Recording Capabilities. Voice Ampli?caiion. Wheelchair sealing (l) theater lighting. Theater upholstered seating, stage,...

  11. Does dual-energy CT of lower-extremity tendons incur penalties in patient radiation exposure or reduced multiplanar reconstruction image quality?

    E-Print Network [OSTI]

    2008-01-01

    diagnostic value of dual-energy CT and MRI in the detectionusing dual-source dual-energy MDCT: Results of JAFROCfor dose reduction in dual energy hepatic CT using non-

  12. Structure of duplex DNA containing the cisplatin 1,2-{Pt(NH3)2}[superscript 2]+-d(GpG) crosslink at 1.77 [Angstrom] resolution

    E-Print Network [OSTI]

    Todd, Ryan C.

    We report the 1.77- resolution X-ray crystal structure of a dodecamer DNA duplex with the sequence 5?-CCTCTGGTCTCC-3? that has been modified to contain a single engineered 1,2-cis-{Pt(NH3)2}2+-d(GpG) cross-link, the major ...

  13. Experimental and Theoretical EPR Study of Jahn?Teller-Active [HIPTN[subscript 3]N]MoL Complexes (L = N[subscript 2], CO, NH[subscript 3])

    E-Print Network [OSTI]

    McNaughton, Rebecca L.

    The trigonally symmetric Mo(III) coordination compounds [HIPTN[subscript 3]N]MoL (L = N[subscript 2], CO, NH[subscript 3]; [HIPTN3N]Mo = [(3,5-(2,4,6-i-Pr[subscript 3]C[subscript 6]H[subscript 2])[subscript 2]C[subscript ...

  14. 6.13 Greenhouse Climates M Pagani, Yale University, New Haven, CT, USA

    E-Print Network [OSTI]

    6.13 Greenhouse Climates M Pagani, Yale University, New Haven, CT, USA M Huber, Purdue University Hyperthermals 284 6.13.4 The Case For and Against Glaciations During Greenhouse Climates 286 6.13.5 Greenhouse Climates and Organic Carbon Burial 288 6.13.6 Climate Modeling and the Challenges of Greenhouse Temperature

  15. VERY BASIC LIE THEORY Department of Mathematics, Yale University, New Haven, CT 06520

    E-Print Network [OSTI]

    Berenstein, Arkady

    VERY BASIC LIE THEORY ROGER HOWE Department of Mathematics, Yale University, New Haven, CT 06520 Lie theory, the theory of Lie groups, Lie algebras and their applications, is a fundamental part variables), group and ring theory, number theory, and physics, from classical to quantum and relativistic

  16. SCIPP 06/04 1 Prototype Tracking Studies for Proton CT

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    SCIPP 06/04 1 Prototype Tracking Studies for Proton CT Nate Blumenkrantz, Jason Feldt, Jason the feasibility of proton computed tomography, the most likely path (MLP) of protons inside an absorber resolution. The locations of 200 MeV protons were measured at three different absorber depth of PMMA (3.75, 6

  17. 3501 FR.03 C&T and M&P Employee Record Completion Prepared by

    E-Print Network [OSTI]

    Post, David M.

    3501 FR.03 C&T and M&P Employee Record Completion Prepared by: name department phone date Authorized by: name title signature date Employee: Effective Date: last name first name m.i. Social Security form Home Address Additional Address Details Flexfield >Enter directory listing preference (default

  18. Vertex2002 pCT: Hartmut F.-W. Sadrozinski , SCIPP Initial Studies in Proton Computed

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    =>Energy to better than % Improve energy determination with statistics 52 2 ~D A N D d. Shahnazi Loma Linda University Medical Center, Loma Linda, CA 92354 Proton Energy Loss in Matter Proton Detector array Proton CT replaces X-ray absorption with proton energy loss to reconstruct mass density

  19. Towards robust deconvolution of low-dose perfusion CT: Sparse perfusion deconvolution using online dictionary learning

    E-Print Network [OSTI]

    Chen, Tsuhan

    in CTP performed at low radiation dose. We first build a dictionary from high-dose perfusion maps usingTowards robust deconvolution of low-dose perfusion CT: Sparse perfusion deconvolution using online maps of blood flow tend to be noisy, especially in low-dose CTP, due to the noisy contrast enhancement

  20. Multi-Material Decomposition Using Statistical Image Reconstruction in X-Ray CT

    E-Print Network [OSTI]

    Fessler, Jeffrey A.

    propose a penalized- likelihood (PL) method with edge-preserving regularizers for each material image reconstruction I. INTRODUCTION Dual-energy (DE) CT reconstruction methods typically re- construct. It obtains a dual-material-density pair through projection-based decomposition approach from DECT