WorldWideScience

Sample records for fr11au10r pipeline safety

  1. 77 FR 16471 - Pipeline Safety: Implementation of the National Registry of Pipeline and Liquefied Natural Gas...

    Science.gov (United States)

    2012-03-21

    ... Registry of Pipeline and Liquefied Natural Gas Operators AGENCY: Pipeline and Hazardous Materials Safety... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Parts... Register (75 FR 72878) titled: ``Pipeline Safety: Updates to Pipeline and Liquefied Natural Gas Reporting...

  2. 75 FR 67450 - Pipeline Safety: Control Room Management Implementation Workshop

    Science.gov (United States)

    2010-11-02

    ... regulations to address human factors and other aspects of control room management for certain pipelines where controllers use supervisory control and data acquisition (SCADA) systems. Under the final rule, pipeline... Washington, DC on October 22, 2010. Jeffrey D. Wiese, Associate Administrator for Pipeline Safety. [FR Doc...

  3. 76 FR 53086 - Pipeline Safety: Safety of Gas Transmission Pipelines

    Science.gov (United States)

    2011-08-25

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part 192 [Docket No. PHMSA-2011-0023] RIN 2137-AE72 Pipeline Safety: Safety of Gas Transmission Pipelines AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), Department of Transportation (DOT...

  4. 76 FR 70953 - Pipeline Safety: Safety of Gas Transmission Pipelines

    Science.gov (United States)

    2011-11-16

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part 192 [Docket ID PHMSA-2011-0023] RIN 2137-AE72 Pipeline Safety: Safety of Gas Transmission Pipelines AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA); DOT. ACTION: Advance notice of...

  5. 76 FR 35130 - Pipeline Safety: Control Room Management/Human Factors

    Science.gov (United States)

    2011-06-16

    ...: Control Room Management/Human Factors AGENCY: Pipeline and Hazardous Materials Safety Administration... the Control Room Management/Human Factors regulations in order to realize the safety benefits sooner... FR 5536). By this amendment to the Control Room Management/Human Factors (CRM) rule, an operator must...

  6. 75 FR 63774 - Pipeline Safety: Safety of On-Shore Hazardous Liquid Pipelines

    Science.gov (United States)

    2010-10-18

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part... Pipelines AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), Department of... Gas Pipeline Safety Act of 1968, Public Law 90-481, delegated to DOT the authority to develop...

  7. 76 FR 303 - Pipeline Safety: Safety of On-Shore Hazardous Liquid Pipelines

    Science.gov (United States)

    2011-01-04

    ... leak detection requirements for all pipelines; whether to require the installation of emergency flow... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part 195 [Docket ID PHMSA-2010-0229] RIN 2137-AE66 Pipeline Safety: Safety of On-Shore Hazardous Liquid...

  8. 75 FR 45591 - Pipeline Safety: Notice of Technical Pipeline Safety Advisory Committee Meetings

    Science.gov (United States)

    2010-08-03

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part... Committee Meetings AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA); DOT. ACTION... safety standards, risk assessments, and safety policies for natural gas pipelines and for hazardous...

  9. 76 FR 29333 - Pipeline Safety: Meetings of the Technical Pipeline Safety Standards Committee and the Technical...

    Science.gov (United States)

    2011-05-20

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Technical Hazardous Liquid Pipeline Safety Standards Committee AGENCY: Pipeline and Hazardous Materials... for natural gas pipelines and for hazardous liquid pipelines. Both committees were established under...

  10. 75 FR 32836 - Pipeline Safety: Workshop on Public Awareness Programs

    Science.gov (United States)

    2010-06-09

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID... American Public Gas Association Association of Oil Pipelines American Petroleum Institute Interstate... the pipeline industry). Hazardous Liquid Gas Transmission/Gathering Natural Gas Distribution (10...

  11. 77 FR 15453 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2012-03-15

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... information collection titled, ``Gas Pipeline Safety Program Certification and Hazardous Liquid Pipeline... collection request that PHMSA will be submitting to OMB for renewal titled, ``Gas Pipeline Safety Program...

  12. 77 FR 34123 - Pipeline Safety: Public Meeting on Integrity Management of Gas Distribution Pipelines

    Science.gov (United States)

    2012-06-08

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2012-0100] Pipeline Safety: Public Meeting on Integrity Management of Gas Distribution Pipelines AGENCY: Office of Pipeline Safety, Pipeline and Hazardous Materials Safety Administration, DOT. ACTION...

  13. 78 FR 70623 - Pipeline Safety: Meeting of the Gas Pipeline Advisory Committee and the Liquid Pipeline Advisory...

    Science.gov (United States)

    2013-11-26

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2009-0203] Pipeline Safety: Meeting of the Gas Pipeline Advisory Committee and the Liquid Pipeline Advisory Committee AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. [[Page...

  14. 75 FR 45696 - Pipeline Safety: Personal Electronic Device Related Distractions

    Science.gov (United States)

    2010-08-03

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... and operators of natural gas and hazardous liquid pipeline facilities are required to have and follow.... Advisory Bulletin (ADB-10-06) To: Owners and Operators of Hazardous Liquid and Natural Gas Pipeline Systems...

  15. 75 FR 53733 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2010-09-01

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2010-0246] Pipeline Safety: Information Collection Activities AGENCY: Pipeline and Hazardous... liquefied natural gas, hazardous liquid, and gas transmission pipeline systems operated by a company. The...

  16. 78 FR 46560 - Pipeline Safety: Class Location Requirements

    Science.gov (United States)

    2013-08-01

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part... class location requirements for gas transmission pipelines. Section 5 of the Pipeline Safety, Regulatory... and, with respect to gas transmission pipeline facilities, whether applying IMP requirements to...

  17. 77 FR 26822 - Pipeline Safety: Verification of Records

    Science.gov (United States)

    2012-05-07

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2012-0068] Pipeline Safety: Verification of Records AGENCY: Pipeline and Hazardous Materials... issuing an Advisory Bulletin to remind operators of gas and hazardous liquid pipeline facilities to verify...

  18. 75 FR 73160 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2010-11-29

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No...-Related Conditions on Gas, Hazardous Liquid, and Carbon Dioxide Pipelines and Liquefied Natural Gas... Pipelines and Liquefied Natural Gas Facilities.'' The Pipeline Safety Laws (49 U.S.C. 60132) require each...

  19. 75 FR 13342 - Pipeline Safety: Workshop on Distribution Pipeline Construction

    Science.gov (United States)

    2010-03-19

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID... natural gas distribution construction. Natural gas distribution pipelines are subject to a unique subset... distribution pipeline construction practices. This workshop will focus solely on natural gas distribution...

  20. 75 FR 5244 - Pipeline Safety: Integrity Management Program for Gas Distribution Pipelines; Correction

    Science.gov (United States)

    2010-02-02

    ... Management Program for Gas Distribution Pipelines; Correction AGENCY: Pipeline and Hazardous Materials Safety... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part... Regulations to require operators of gas distribution pipelines to develop and implement integrity management...

  1. 78 FR 41496 - Pipeline Safety: Meetings of the Gas and Liquid Pipeline Advisory Committees

    Science.gov (United States)

    2013-07-10

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2013-0156] Pipeline Safety: Meetings of the Gas and Liquid Pipeline Advisory Committees AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Notice of advisory committee...

  2. 76 FR 45904 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2011-08-01

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... at U.S. Department of Transportation, Pipeline and Hazardous Materials Safety Administration, 1200...: On Occasion. Title: Record Keeping for Natural Gas Pipeline Operators. OMB Control Number: 2137-0049...

  3. 75 FR 13807 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2010-03-23

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... of Transportation, Pipeline and Hazardous Materials Safety Administration, 1200 New Jersey Avenue, SE...: Updates to Pipeline and Liquefied Natural Gas Reporting Requirements (One Rule). The Notice of Proposed...

  4. 76 FR 44985 - Pipeline Safety: Potential for Damage to Pipeline Facilities Caused by Flooding

    Science.gov (United States)

    2011-07-27

    .... PHMSA-2011-0177] Pipeline Safety: Potential for Damage to Pipeline Facilities Caused by Flooding AGENCY... liquid pipelines to communicate the potential for damage to pipeline facilities caused by severe flooding... pipelines in case of flooding. ADDRESSES: This document can be viewed on the Office of Pipeline Safety home...

  5. 78 FR 24309 - Pipeline and Hazardous Materials Safety Administration

    Science.gov (United States)

    2013-04-24

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration List of Special Permit Applications Delayed AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA..., Pipeline and Hazardous Materials Safety Administration, U.S. Department of Transportation, East Building...

  6. 78 FR 5866 - Pipeline Safety: Annual Reports and Validation

    Science.gov (United States)

    2013-01-28

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID PHMSA-2012-0319] Pipeline Safety: Annual Reports and Validation AGENCY: Pipeline and Hazardous Materials... 2012 gas transmission and gathering annual reports, remind pipeline owners and operators to validate...

  7. 78 FR 41991 - Pipeline Safety: Potential for Damage to Pipeline Facilities Caused by Flooding

    Science.gov (United States)

    2013-07-12

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No...: Pipeline and Hazardous Materials Safety Administration (PHMSA); DOT. ACTION: Notice; Issuance of Advisory... Gas and Hazardous Liquid Pipeline Systems. Subject: Potential for Damage to Pipeline Facilities Caused...

  8. 77 FR 2606 - Pipeline Safety: Random Drug Testing Rate

    Science.gov (United States)

    2012-01-18

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID PHMSA-2012-0004] Pipeline Safety: Random Drug Testing Rate AGENCY: Pipeline and Hazardous Materials... pipelines and operators of liquefied natural gas facilities must select and test a percentage of covered...

  9. 75 FR 9018 - Pipeline Safety: Random Drug Testing Rate

    Science.gov (United States)

    2010-02-26

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID PHMSA-2010-0034] Pipeline Safety: Random Drug Testing Rate AGENCY: Pipeline and Hazardous Materials... pipelines and operators of liquefied natural gas facilities must select and test a percentage of covered...

  10. 77 FR 34458 - Pipeline Safety: Requests for Special Permit

    Science.gov (United States)

    2012-06-11

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2012-0112] Pipeline Safety: Requests for Special Permit AGENCY: Pipeline and Hazardous Materials... BreitBurn Energy Company LP, two natural gas pipeline operators, seeking relief from compliance with...

  11. 78 FR 14877 - Pipeline Safety: Incident and Accident Reports

    Science.gov (United States)

    2013-03-07

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID PHMSA-2013-0028] Pipeline Safety: Incident and Accident Reports AGENCY: Pipeline and Hazardous Materials... PHMSA F 7100.2--Incident Report--Natural and Other Gas Transmission and Gathering Pipeline Systems and...

  12. 76 FR 11853 - Pipeline Safety: Request for Special Permit

    Science.gov (United States)

    2011-03-03

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2011-0027] Pipeline Safety: Request for Special Permit AGENCY: Pipeline and Hazardous Materials... a 24-inch mainline natural gas pipeline, 595 feet in length. The first segment of the special permit...

  13. 78 FR 65429 - Pipeline Safety: Request for Special Permit

    Science.gov (United States)

    2013-10-31

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2010-0041] Pipeline Safety: Request for Special Permit AGENCY: Pipeline and Hazardous Materials...-0041 Williams Gas Pipeline 49 CFR 192.150........ To authorize the extension Company, LLC (WGP). of a...

  14. 75 FR 35516 - Pipeline Safety: Request for Special Permit

    Science.gov (United States)

    2010-06-22

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2010-0147] Pipeline Safety: Request for Special Permit AGENCY: Pipeline and Hazardous Materials... with the Class 1 location portion of a 7.4 mile natural gas pipeline to be constructed in Alaska. This...

  15. 77 FR 61825 - Pipeline Safety: Notice of Public Meeting on Pipeline Data

    Science.gov (United States)

    2012-10-11

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID... program performance measures for gas distribution, gas transmission, and hazardous liquids pipelines. The... distribution pipelines (49 CFR 192.1007(e)), gas transmission pipelines (49 CFR 192.945) and hazardous liquids...

  16. 76 FR 21423 - Pipeline Safety: Request for Special Permit

    Science.gov (United States)

    2011-04-15

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2011-0063] Pipeline Safety: Request for Special Permit AGENCY: Pipeline and Hazardous Materials... application is for two 30-inch segments, segments 3 and 4, of the TPL 330 natural gas pipeline located in St...

  17. 77 FR 27279 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2012-05-09

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... collections relate to the pipeline integrity management requirements for gas transmission pipeline operators... Management in High Consequence Areas Gas Transmission Pipeline Operators. OMB Control Number: 2137-0610...

  18. 77 FR 46155 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2012-08-02

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... collections relate to the pipeline integrity management requirements for gas transmission pipeline operators... Management in High Consequence Areas Gas Transmission Pipeline Operators. OMB Control Number: 2137-0610...

  19. 77 FR 36606 - Pipeline Safety: Government/Industry Pipeline Research and Development Forum, Public Meeting

    Science.gov (United States)

    2012-06-19

    ...: Threat Prevention --Working Group 2: Leak Detection/Mitigation & Storage --Working Group 3: Anomaly... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID PHMSA-2012-0146] Pipeline Safety: Government/Industry Pipeline Research and Development Forum, Public...

  20. 77 FR 51848 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2012-08-27

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Program for Gas Distribution Pipelines. DATES: Interested persons are invited to submit comments on or.... These regulations require operators of hazardous liquid pipelines and gas pipelines to develop and...

  1. 77 FR 74275 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2012-12-13

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No.... These regulations require operators of hazardous liquid pipelines and gas pipelines to develop and... control room. Affected Public: Operators of both natural gas and hazardous liquid pipeline systems. Annual...

  2. 77 FR 2126 - Pipeline Safety: Implementation of the National Registry of Pipeline and Liquefied Natural Gas...

    Science.gov (United States)

    2012-01-13

    ... Natural Gas Operators AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No...: ``Pipeline Safety: Updates to Pipeline and Liquefied Natural Gas Reporting Requirements.'' The final rule...

  3. 78 FR 42889 - Pipeline Safety: Reminder of Requirements for Utility LP-Gas and LPG Pipeline Systems

    Science.gov (United States)

    2013-07-18

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part 192 [Docket No. PHMSA-2013-0097] Pipeline Safety: Reminder of Requirements for Utility LP-Gas and LPG Pipeline Systems AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION...

  4. 77 FR 45417 - Pipeline Safety: Inspection and Protection of Pipeline Facilities After Railway Accidents

    Science.gov (United States)

    2012-07-31

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Accidents AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA); DOT. [[Page 45418

  5. 76 FR 45332 - Pipeline and Hazardous Materials Safety Administration

    Science.gov (United States)

    2011-07-28

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration Office of... Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: List of Applications for Modification of..., 2011. ADDRESSES: Record Center, Pipeline and Hazardous Materials Safety Administration, U.S. Department...

  6. 75 FR 4136 - Pipeline Safety: Request To Modify Special Permit

    Science.gov (United States)

    2010-01-26

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2009-0377] Pipeline Safety: Request To Modify Special Permit AGENCY: Pipeline and Hazardous... coating on its gas pipeline. DATES: Submit any comments regarding this special permit modification request...

  7. 77 FR 19414 - Pipeline Safety: Public Comment on Leak and Valve Studies Mandated by the Pipeline Safety...

    Science.gov (United States)

    2012-03-30

    ... Safety, Regulatory Certainty, and Job Creation Act of 2011 AGENCY: Pipeline and Hazardous Materials.... Background: The recent passage of the Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 has... consider upstream and downstream controls, automation, supervisory control and data acquisition systems...

  8. 75 FR 67807 - Pipeline Safety: Emergency Preparedness Communications

    Science.gov (United States)

    2010-11-03

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... is issuing an Advisory Bulletin to remind operators of gas and hazardous liquid pipeline facilities... Gas Pipeline Systems. Subject: Emergency Preparedness Communications. Advisory: To further enhance the...

  9. 76 FR 65778 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2011-10-24

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No...: 12,120. Frequency of Collection: On occasion. 2. Title: Recordkeeping for Natural Gas Pipeline... investigating incidents. Affected Public: Operators of natural gas pipeline systems. Annual Reporting and...

  10. 76 FR 28326 - Pipeline Safety: National Pipeline Mapping System Data Submissions and Submission Dates for Gas...

    Science.gov (United States)

    2011-05-17

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR 191... Reports AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Issuance of... Pipeline and Hazardous Materials Safety Administration (PHMSA) published a final rule on November 26, 2010...

  11. 75 FR 4134 - Pipeline Safety: Leak Detection on Hazardous Liquid Pipelines

    Science.gov (United States)

    2010-01-26

    ... safety study on pipeline Supervisory Control and Data Acquisition (SCADA) systems (NTSB/SS-05/02). The... indications of a leak on the SCADA interface was the impetus for this study. The NTSB examined 13 hazardous... pipelines, the line balance technique for leak detection can often be performed with manual calculations...

  12. 75 FR 58014 - Pipeline Safety: Information Collection Activity; Request for Comments

    Science.gov (United States)

    2010-09-23

    ..., supports pipeline safety by ensuring the proper functioning of CPM leak detection systems. Affected Public...-phase hazardous liquid pipeline facilities that use computational pipeline monitoring (CPM) leak... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No...

  13. 77 FR 61826 - Pipeline Safety: Communication During Emergency Situations

    Science.gov (United States)

    2012-10-11

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... liquefied natural gas pipeline facilities that operators should immediately and directly notify the Public.... Background Federal regulations for gas, liquefied natural gas (LNG), and hazardous liquid pipeline facilities...

  14. 77 FR 34457 - Pipeline Safety: Mechanical Fitting Failure Reports

    Science.gov (United States)

    2012-06-11

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... notice provides clarification to owners and operators of gas distribution pipeline facilities when... of a gas distribution pipeline facility to file a written report for any mechanical fitting failure...

  15. 75 FR 5536 - Pipeline Safety: Control Room Management/Human Factors, Correction

    Science.gov (United States)

    2010-02-03

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Parts...: Control Room Management/Human Factors, Correction AGENCY: Pipeline and Hazardous Materials Safety... following correcting amendments: PART 192--TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM...

  16. 77 FR 17119 - Pipeline Safety: Cast Iron Pipe (Supplementary Advisory Bulletin)

    Science.gov (United States)

    2012-03-23

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... national attention and highlight the need for continued safety improvements to aging gas pipeline systems... 26, 1992) covering the continued use of cast iron pipe in natural gas distribution pipeline systems...

  17. 78 FR 53190 - Pipeline Safety: Notice to Operators of Hazardous Liquid and Natural Gas Pipelines of a Recall on...

    Science.gov (United States)

    2013-08-28

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2013-0185] Pipeline Safety: Notice to Operators of Hazardous Liquid and Natural Gas Pipelines of a Recall on Leak Repair Clamps Due to Defective Seal AGENCY: Pipeline and Hazardous Materials Safety...

  18. 75 FR 36615 - Pipeline Safety: Information Collection Gas Distribution Annual Report Form

    Science.gov (United States)

    2010-06-28

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part 192 [Docket No. PHMSA-RSPA-2004-19854] Pipeline Safety: Information Collection Gas Distribution Annual Report Form AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Request...

  19. 76 FR 68828 - Pipeline Safety: Emergency Responder Forum

    Science.gov (United States)

    2011-11-07

    ... management community leaders, pipeline safety regulators, pipeline industry representatives, and interested... time to go through security. A block of hotel rooms has been reserved at Courtyard by Marriott Capitol Hill/Navy Yard, (866) 329-0003. Hotel reservations must be made on or before November 17, 2011, to...

  20. 76 FR 54531 - Pipeline Safety: Potential for Damage to Pipeline Facilities Caused by the Passage of Hurricanes

    Science.gov (United States)

    2011-09-01

    ... prescribed in Sec. 195.452(h).'' Operators of shallow-water gas and hazardous liquid pipelines in the Gulf of... pipeline safety: 1. Identify persons who normally engage in shallow-water commercial fishing, shrimping... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No...

  1. 77 FR 6857 - Pipeline Safety: Notice of Public Meetings on Improving Pipeline Leak Detection System...

    Science.gov (United States)

    2012-02-09

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID... installed to lessen the volume of natural gas and hazardous liquid released during catastrophic pipeline... p.m. Panel 3: Considerations for Natural Gas Pipeline Leak Detection Systems 3:30 p.m. Break 3:45 p...

  2. 75 FR 35366 - Pipeline Safety: Applying Safety Regulation to All Rural Onshore Hazardous Liquid Low-Stress Lines

    Science.gov (United States)

    2010-06-22

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part... Onshore Hazardous Liquid Low-Stress Lines AGENCY: Pipeline and Hazardous Materials Safety Administration... to the risks that hazardous liquid and natural gas pipelines pose to the environment. In the Pipeline...

  3. 77 FR 75699 - Pipeline Safety: Reporting of Exceedances of Maximum Allowable Operating Pressure

    Science.gov (United States)

    2012-12-21

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA); DOT. ACTION: Notice; Issuance of... occurs. This reporting requirement is applicable to all gas transmission pipeline facility owners and...

  4. 78 FR 34703 - Pipeline Safety: Information Collection Activities, Revision to Gas Distribution Annual Report

    Science.gov (United States)

    2013-06-10

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2013-0004] Pipeline Safety: Information Collection Activities, Revision to Gas Distribution Annual Report AGENCY: Pipeline and Hazardous Materials Safety Administration, DOT. ACTION: Notice and request...

  5. 77 FR 22387 - Pipeline Safety: Information Collection Activities, Revision to Gas Transmission and Gathering...

    Science.gov (United States)

    2012-04-13

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2012-0024] Pipeline Safety: Information Collection Activities, Revision to Gas Transmission and Gathering Pipeline Systems Annual Report, Gas Transmission and Gathering Pipeline Systems Incident Report...

  6. 77 FR 58616 - Pipeline Safety: Information Collection Activities, Revision to Gas Transmission and Gathering...

    Science.gov (United States)

    2012-09-21

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2012-0024] Pipeline Safety: Information Collection Activities, Revision to Gas Transmission and Gathering Pipeline Systems Annual Report, Gas Transmission and Gathering Pipeline Systems Incident Report...

  7. 78 FR 65427 - Pipeline Safety: Reminder of Requirements for Liquefied Petroleum Gas and Utility Liquefied...

    Science.gov (United States)

    2013-10-31

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2013-0097] Pipeline Safety: Reminder of Requirements for Liquefied Petroleum Gas and Utility Liquefied Petroleum Gas Pipeline Systems AGENCY: Pipeline and Hazardous Materials Safety Administration...

  8. 78 FR 6402 - Pipeline Safety: Accident and Incident Notification Time Limit

    Science.gov (United States)

    2013-01-30

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No.... SUMMARY: Owners and operators of gas and hazardous liquid pipeline systems and liquefied natural gas (LNG... operators of gas and hazardous liquids pipeline systems and LNG facilities that, ``at the earliest...

  9. 76 FR 73011 - Pipeline and Hazardous Materials Safety Administration

    Science.gov (United States)

    2011-11-28

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration Office of... Safety Administration (PHMSA), DOT. ACTION: Notice of actions on Special Permit Applications. SUMMARY: In... reissue the Nuclear 173.56(b)(3)(i special permit Security ). originally issued Administration on an...

  10. 76 FR 1504 - Pipeline Safety: Establishing Maximum Allowable Operating Pressure or Maximum Operating Pressure...

    Science.gov (United States)

    2011-01-10

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Mitigation AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA); DOT. ACTION: Notice... system. To that end, the Hazardous Liquid and Gas Transmission Pipeline Integrity Management (IM...

  11. 75 FR 15485 - Pipeline Safety: Workshop on Guidelines for Integrity Assessment of Cased Pipe

    Science.gov (United States)

    2010-03-29

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID...: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Notice of workshop. SUMMARY... ``Guidelines for Integrity Assessment of Cased Pipe in Gas Transmission Pipelines'' and related Frequently...

  12. 75 FR 22678 - Pipeline Safety: Implementation of Electronic Filing for Recently Revised Incident/Accident...

    Science.gov (United States)

    2010-04-29

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Liquid Systems AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Notice; Issuance of Advisory Bulletin. SUMMARY: This notice advises owners and operators of gas pipeline...

  13. 78 FR 38803 - Pipeline Safety: Information Collection Activities, Revisions to Incident and Annual Reports for...

    Science.gov (United States)

    2013-06-27

    ... Reports for Gas Pipeline Operators AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... (OMB) Control No. 2137-0522, titled ``Incident and Annual Reports for Gas Pipeline Operators.'' PHMSA...

  14. 78 FR 55775 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2013-09-11

    ... important tool for identifying safety trends in the hazardous liquid pipeline industry. In a Federal... reference of American Petroleum Institute (API) API 1130 (the industry standard on leak detection) which... requests that volume exiting a system during a controlled event not be reported. PHMSA Response: PHMSA does...

  15. 75 FR 2926 - Pipeline Safety: Reporting Drug and Alcohol Test Results for Contractors and Multiple Operator...

    Science.gov (United States)

    2010-01-19

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Operator Identification Numbers AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT... liquid, and carbon dioxide pipelines and liquefied natural gas facilities that the Pipeline and Hazardous...

  16. 75 FR 14243 - Pipeline Safety: Girth Weld Quality Issues Due to Improper Transitioning, Misalignment, and...

    Science.gov (United States)

    2010-03-24

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No..., and Welding Practices of Large Diameter Line Pipe AGENCY: Pipeline and Hazardous Materials Safety... bulletin to notify owners and operators of recently constructed large diameter natural gas pipeline and...

  17. 76 FR 25576 - Pipeline Safety: Applying Safety Regulations to All Rural Onshore Hazardous Liquid Low-Stress Lines

    Science.gov (United States)

    2011-05-05

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part... to All Rural Onshore Hazardous Liquid Low-Stress Lines AGENCY: Pipeline and Hazardous Materials..., suggested that the scope should include low-stress gas pipelines such as those associated with coal bed...

  18. 75 FR 5640 - Pipeline Safety: Implementation of Revised Incident/Accident Report Forms for Distribution...

    Science.gov (United States)

    2010-02-03

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Distribution Systems, Gas Transmission and Gathering Systems, and Hazardous Liquid Systems AGENCY: Pipeline and.... SUMMARY: This notice advises owners and operators of gas pipeline facilities and hazardous liquid pipeline...

  19. 78 FR 32010 - Pipeline Safety: Public Workshop on Integrity Verification Process

    Science.gov (United States)

    2013-05-28

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Hazardous Materials Safety Administration, DOT. ACTION: Notice of public meeting. SUMMARY: This notice is announcing a public workshop to be held on the concept of ``Integrity Verification Process.'' The Integrity...

  20. Traditions matrimoniales dans la région de Rabat-Salé-Zemmour-Zaer au Maroc

    OpenAIRE

    Hami, H.; Soulaymani, A.; Mokhtari, A.

    2011-01-01

    La pratique des mariages consanguins est très répandue au Moyen-Orient, en Afrique du Nord et dans le Sud-Ouest Asiatique où 20 à plus de 50 % de mariages sont consanguins. L’analyse d’un échantillon de 270 femmes mariées, pris au hasard dans le service de Maternité de l’Hôpital Souissi à Rabat (2004-2005), a fait l’objet d’une étude prospective visant à déterminer la fréquence des mariages consanguins dans la région de Rabat-Salé-Zemmour-Zaer au Maroc. Les résultats obtenus montrent que 20...

  1. 77 FR 72905 - Pipeline Safety: Random Drug Testing Rate; Contractor MIS Reporting; and Obtaining DAMIS Sign-In...

    Science.gov (United States)

    2012-12-06

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket ID... DAMIS Sign-In Information AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT..., hazardous liquid, and carbon dioxide pipelines and operators of liquefied natural gas facilities must...

  2. Regulatory assessment with regulatory flexibility analysis and paperwork reduction act analysis : draft regulatory evaluation : Notice of Proposed Rulemaking -- Pipeline Safety : Polyamide-11 (PA-11) plastic pipe design pressures

    Science.gov (United States)

    2007-06-01

    The Pipeline and Hazardous Materials Safety Administration (PHMSA) is proposing changes to the Federal pipeline safety regulations in 49 CFR Part 192, which cover the transportation of natural gas by pipeline. Specifically, PHMSA is proposing to chan...

  3. 78 FR 30964 - Pipeline Safety: Workshop on Public Awareness Programs

    Science.gov (United States)

    2013-05-23

    ... Richardson, Texas. The workshop serves as an opportunity to bring pipeline safety stakeholders together to..., and excavators) will share their perspectives on what is working and what is not working with existing... discuss recent inspection findings; (2) Understand what's working and not working with public awareness...

  4. 78 FR 13747 - Railroad Safety: Advisory Notice Related to Railroad Accidents in Vicinity of Underground Pipelines

    Science.gov (United States)

    2013-02-28

    ... underground natural gas transmission pipeline operated by Nicor Gas. The pipeline well exceeded Federal... had the gas pipeline been installed at the railroad crossing with only the minimum level of ground... resumption of service.'' On July 31, 2012, the Pipeline and Hazardous Materials Safety Administration (PHMSA...

  5. 76 FR 5494 - Pipeline Safety: Mechanical Fitting Failure Reporting Requirements

    Science.gov (United States)

    2011-02-01

    ... style'' fittings ( provides no explanation or e.g. stab, nut follower, bolted). justification for the...-RELATED CONDITION REPORTS 0 1. The authority citation for part 191 continues to read as follows: Authority... OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS 0 3. The authority citation...

  6. 77 FR 19799 - Pipeline Safety: Pipeline Damage Prevention Programs

    Science.gov (United States)

    2012-04-02

    ... noted ``when the oil pipeline industry developed the survey for its voluntary spill reporting system...) [cir] The American Public Gas Association (APGA) [cir] The Association of Oil Pipelines (AOPL) [cir... the contrary, all 50 states in the United States have a law designed to prevent excavation damage to...

  7. Grasping at Straws: Comments on the Alberta Pipeline Safety Review

    Directory of Open Access Journals (Sweden)

    Jennifer Winter

    2013-09-01

    Full Text Available The release last month of the Alberta Pipeline Safety Review was meant to be a symbol of the province’s renewed commitment to environmental responsibility as it aims for new export markets. The report’s authors, Group 10 Engineering, submitted 17 recommendations covering public safety and pipeline incidents, pipeline integrity management and pipeline safety near bodies of water — and many of them run the gamut from the obvious to the unhelpful to the contradictory. That the energy regulator ought to be staffed to do its job should go without saying; in fact, staffing levels were never identified as an issue. The recommendation that record retention and transfer requirements be defined for mergers and acquisitions, sales and takeovers is moot. There is no reason a purchasing party would not want all relevant documents, and no real way to enforce transparency if the seller opts to withhold information. Harmonizing regulations between provinces could reduce companies’ cost of doing business, but could also prove challenging if different jurisdictions use performance-based regulations — which is what the Review recommended Alberta consider. This very brief paper pries apart the Review’s flaws and recommends that the province go back to the drawing board. Safety is a serious issue; a genuine statistical review linking pipeline characteristics to failures and risk-mitigation activities would be a better alternative by far.

  8. 75 FR 69912 - Pipeline Safety: Control Room Management/Human Factors

    Science.gov (United States)

    2010-11-16

    ... 192 and 195 [Docket ID PHMSA-2007-27954] RIN 2137-AE64 Pipeline Safety: Control Room Management/Human... Control Room Management/Human Factors rule at 49 CFR 192.631 and 195.446. The NPRM proposes to expedite... rule and to engage in open discussions with the agency at PHMSA's Control Room Management...

  9. 78 FR 71036 - Pipeline Safety: Random Drug Testing Rate; Contractor Management Information System Reporting...

    Science.gov (United States)

    2013-11-27

    ... PHMSA-2013-0248] Pipeline Safety: Random Drug Testing Rate; Contractor Management Information System Reporting; and Obtaining Drug and Alcohol Management Information System Sign-In Information AGENCY: Pipeline... Management Information System (MIS) Data; and New Method for Operators to Obtain User Name and Password for...

  10. 77 FR 10666 - Pipeline Safety: Post Accident Drug and Alcohol Testing

    Science.gov (United States)

    2012-02-23

    ... 199 [Docket No. PHMSA-2011-0335] Pipeline Safety: Post Accident Drug and Alcohol Testing AGENCY... operators of Liquefied Natural Gas (LNG) facilities to conduct post- accident drug and alcohol tests of..., operators must drug and alcohol test each covered employee whose performance either contributed to the...

  11. 49 CFR 192.11 - Petroleum gas systems.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Petroleum gas systems. 192.11 Section 192.11... BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS General § 192.11 Petroleum gas systems. (a) Each plant that supplies petroleum gas by pipeline to a natural gas distribution system must meet the requirements...

  12. 77 FR 5472 - Pipeline Safety: Expanding the Use of Excess Flow Valves in Gas Distribution Systems to...

    Science.gov (United States)

    2012-02-03

    ..., Regulatory Certainty, and Job Creation Act of 2011 (PL112-90), have imposed additional demands on their... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Part 192 [Docket ID PHMSA-2011-0009] RIN 2137-AE71 Pipeline Safety: Expanding the Use of Excess Flow Valves...

  13. 75 FR 19957 - B-R Pipeline Company; Notice of Application

    Science.gov (United States)

    2010-04-16

    ... should be directed to Counsel for B-R Pipeline Company, William H. Penniman or Michael Brooks, Sutherland...-0100, facsimile number (202) 637-3593, and e-mail: [email protected]sutherland.com or [email protected]sutherland.com . There are two ways to become involved in the Commission's review of this project. First, any...

  14. Cluster-to-cluster transformation among Au6, Au8 and Au11 nanoclusters.

    Science.gov (United States)

    Ren, Xiuqing; Fu, Junhong; Lin, Xinzhang; Fu, Xuemei; Yan, Jinghui; Wu, Ren'an; Liu, Chao; Huang, Jiahui

    2018-05-22

    We present the cluster-to-cluster transformations among three gold nanoclusters, [Au6(dppp)4]2+ (Au6), [Au8(dppp)4Cl2]2+ (Au8) and [Au11(dppp)5]3+ (Au11). The conversion process follows a rule that states that the transformation of a small cluster to a large cluster is achieved through an oxidation process with an oxidizing agent (H2O2) or with heating, while the conversion of a large cluster to a small one occurs through a reduction process with a reducing agent (NaBH4). All the reactions were monitored using UV-Vis spectroscopy and ESI-MS. This work may provide an alternative approach to the synthesis of novel gold nanoclusters and a further understanding of the structural transformation relationship of gold nanoclusters.

  15. Focus on safety : a comparative analysis of pipeline safety performance 2000-2002

    International Nuclear Information System (INIS)

    2004-01-01

    Canada's National Energy Board (NEB) is responsible for the promotion of safety, environmental protection and economic efficiency in the Canadian public interest in regulating the design, construction, operation and abandonment of interprovincial and international pipelines within Canada. This second annual report provides a review of the safety performance of oil and gas pipeline companies that are regulated by the NEB. The data used to prepare this report originates from two sources: incident reports submitted under the Onshore Pipeline Regulations, 1999, and from information voluntarily provided by pipeline companies under the Safety Performance Indicators (SPI) initiative. Data comparisons with external reference organizations were included. Six key indicators have been identified to provide comprehensive measures of safety performance for pipeline companies: fatalities, ruptures, injury frequencies, liquid releases, gas releases, and unauthorized activities on the right of way. The safety performance of the federally regulated pipeline industry within Canada was satisfactory during this reporting period (2000-2002). The contractor injury frequency rates reported in 2002 were lower than those reported in 2001, and exhibited more consistency with the levels reported in 2000. The NEB is of the opinion that the elevated number of liquid hydrocarbon spills reported in 2000 were a result of elevated construction levels. No fatalities were reported. There was an increase to three from two in the number of ruptures, due in large part to metal loss (corrosion) and cracking, and external interference (third party damage). The number of spills increased to 76 in 2002 from 55 in 2001, which appears to be more in line with industry averages. The volume of hydrocarbon liquid released in 2002 represented one third the volume released in 2001. refs., 5 tabs., 14 figs

  16. Deliberation of Post 3.11 Fast Reactor R&D Strategy in Japan

    International Nuclear Information System (INIS)

    Kondo, Shunsuke

    2013-01-01

    • New nuclear energy strategy is still in the process of deliberation in Japan. Though many of idled plants will be restarted after renovation of their safety features in accordance with new safety rules set by the NRA, the contribution of nuclear power in Japan will probably not return to the level before 3.11. • Japan is in the process of reviewing its strategy for SFR R&D with a view to making it compatible with the new situation to be realized under new safety regulation as well as new energy strategy to be formulated within a year. • It is contemplated that major emphasis of the SFR R&D should be on a) the completion and use of MONJU, b) FR safety and c) waste minimization, not to mention the making effective use of our knowledge basis and research and engineering capabilities cultivated through the FaCT project in the development of sustainable nuclear energy systems worldwide for future generations of mankind. • Promotion of international cooperation should be an essential ingredient of the strategy

  17. Au11Re: A hollow or endohedral binary cluster?

    Science.gov (United States)

    MacLeod Carey, Desmond; Muñoz-Castro, Alvaro

    2018-06-01

    In this letter, we discussed the plausible formation of [Au11Re] as a superatom with an electronic structure accounted by the 1S21P61D10 shell order, denoting similar stability to [W@Au12]. The possible hollow or endohedral structures show a variable HOMO-LUMO gap according to the given structure (from 0.33 to 1.30 eV, at the PBE/ZORA level). Our results show that the energy minimum is an endohedral arrangement, where Re is encapsulated in a D3h-Au11 cage, retaining a higher gold-dopant stoichiometric ratio. This approach is useful for further rationalization and design of novel superatoms expanding the libraries of endohedral clusters.

  18. Regulatory assessment with regulatory flexibility analysis : draft regulatory evaluation - Notice of Proposed Rulemaking -- Pipeline Safety : safety standards for increasing the maximum allowable operating pressure for natural gas transmission pipelines.

    Science.gov (United States)

    2008-02-01

    The Pipeline and Hazardous Materials Safety Administration (PHMSA) is proposing changes to the Federal pipeline safety regulations in 49 CFR Part 192, which cover the transportation of natural gas by pipeline. Specifically, PHMSA proposes allowing na...

  19. 49 CFR 179.11 - Welding certification.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Welding certification. 179.11 Section 179.11 Transportation Other Regulations Relating to Transportation PIPELINE AND HAZARDOUS MATERIALS SAFETY... Design Requirements § 179.11 Welding certification. (a) Welding procedures, welders and fabricators shall...

  20. Environmental, public health, and safety assessment of fuel pipelines and other freight transportation modes

    International Nuclear Information System (INIS)

    Strogen, Bret; Bell, Kendon; Breunig, Hanna; Zilberman, David

    2016-01-01

    Highlights: • Externalities are examined for pipelines, truck, rail, and barge. • Safety impact factors include incidences of injuries, illnesses, and fatalities. • Environmental impact factors include CO_2eq emissions and air pollution disease burden. • Externalities are estimated for constructing and operating a large domestic pipeline. • A large pipeline has lower cumulative impacts than other modes within ten years. - Abstract: The construction of pipelines along high-throughput fuel corridors can alleviate demand for rail, barge, and truck transportation. Pipelines have a very different externality profile than other freight transportation modes due to differences in construction, operation, and maintenance requirements; labor, energy, and material input intensity; location and profile of emissions from operations; and frequency and magnitude of environmental and safety incidents. Therefore, public policy makers have a strong justification to influence the economic viability of pipelines. We use data from prior literature and U.S. government statistics to estimate environmental, public health, and safety characterization factors for pipelines and other modes. In 2008, two pipeline companies proposed the construction of an ethanol pipeline from the Midwest to Northeast United States. This proposed project informs our case study of a 2735-km $3.5 billion pipeline (2009 USD), for which we evaluate potential long-term societal impacts including life-cycle costs, greenhouse gas emissions, employment, injuries, fatalities, and public health impacts. Although it may take decades to break even economically, and would result in lower cumulative employment, such a pipeline would likely have fewer safety incidents, pollution emissions, and health damages than the alternative multimodal system in less than ten years; these results stand even if comparing future cleaner ground transport modes to a pipeline that utilizes electricity produced from coal

  1. Increase of ecological safety of the pipeline

    International Nuclear Information System (INIS)

    Dr Movsumov, Sh.N.; Prof Aliyev, F.G.

    2005-01-01

    Full text : For increase of ecological safety of the pipeline, necessary decrease of damage (risk) rendered by the pipeline on surrounding natural environment which depends: on the frequency of damage of the pipeline; on the volume poured oil; on the factor of sensitivity of an environment where flood of oil was. Frequency of damage of the pipeline depends on physico-chemical properties of a material of the pipeline, from its technical characteristics (thickness of a wall, length of a pipe, working pressure), on the seismic area of the district where the pipeline passed and also on the way of lining of the pipeline (underground or overground). The volume poured oil depends on diameter of the received damage, from stability of the pipeline mechanical and other external actions, from an ambient temperature, from capacity of the pipeline, from distance between the latches established in the pipeline, and also from time, necessary for their full closing. The factor of sensitivity of environment depends on geological structure and landscapes of district (mountain, the river, settlements) where passed the pipeline. At designing the pipeline, in report is shown questions of increase of ecological safety of the pipeline are considered at his construction and exploitation. For improvement of ecological safety of the pipeline is necessary to hold the following actions: Ecological education of the public, living near along a line of the oil pipeline; carrying out ecological monitoring; working of the public plan of response to oil spills; For ecological education of the public is necessary: carrying out informing of the public for all (technical, ecological, social and economic and legal) questions connected to an oil pipeline, and also on methods of protection of the rights at participation in acceptance of ecological significant decisions; Creation of public groups for realization of activity on observance of the legislation and to prevention of risks; Exposure of hot

  2. 76 FR 70217 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2011-11-10

    ... combined comment from American Petroleum Institute (API) and American Oil Pipelines Association (AOPL) on... some rural low-stress hazardous liquid pipelines are not subject to part 195 although they are required...

  3. 75 FR 80300 - Five-Year Review of Oil Pipeline Pricing Index

    Science.gov (United States)

    2010-12-22

    ...] Five-Year Review of Oil Pipeline Pricing Index Issued December 16, 2010. AGENCY: Federal Energy... five-year review of the oil pricing index, established in Order No. 561. After consideration of the... period commencing July 1, 2011. \\1\\ Five-Year Review of Oil Pipeline Pricing Index, 75 FR 34959 (June 21...

  4. 49 CFR 195.210 - Pipeline location.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Pipeline location. 195.210 Section 195.210 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... PIPELINE Construction § 195.210 Pipeline location. (a) Pipeline right-of-way must be selected to avoid, as...

  5. 76 FR 13610 - Enterprise Texas Pipeline LLC; Notice of Compliance Filing

    Science.gov (United States)

    2011-03-14

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket Nos. PR10-14-002; PR11-92-000] Enterprise Texas Pipeline LLC; Notice of Compliance Filing Take notice that on March 1, 2011, Enterprise Texas Pipeline LLC (Enterprise Texas) filed a revised Statement of Rates to its Statement of Operating...

  6. Pipelines 'R' us

    International Nuclear Information System (INIS)

    Thomas, P.

    1997-01-01

    The geopolitical background to the export of oil and gas from Kazakhstan by pipeline is explored with particular reference to the sensitivities of the USA. There are now a number of pipeline proposals which would enable Kazakhstan to get its hydrocarbons to world markets. The construction of two of these formed part of a major oil deal signed recently with China in the face of stiff competition from major US companies. The most convenient and cost effective route, connecting up with Iran's existing pipeline network to the Gulf, is unlikely to be developed given continuing US sanctions against Iran. Equally unlikely seems to be the Turkmenistan to Pakistan pipeline in the light of the political volatility of Afghanistan. US companies continue to face limits on export capacity via the existing Russian pipelines from Kazakhstan. A temporary solution could be to carry some oil in the existing pipeline from Azerbaijan to Georgia which has been upgraded and is due to become operational soon, and later in a second proposed pipeline on this route. The Caspian Pipeline Consortium, consisting of three countries and eleven international companies, is building a 1500 km pipeline from the Tergiz field to Novorossiysk on the Black Sea with a view to completion in 2000. An undersea pipeline crossing the Caspian from Azerbaijan is being promoted by Turkey. There is an international perception that within the next five years Kazakhstan could be in a position to export its oil via as many as half a dozen different routes. (UK)

  7. 75 FR 56972 - Pipeline Safety: Control Room Management/Human Factors

    Science.gov (United States)

    2010-09-17

    ... for certain pipelines where controllers use supervisory control and data acquisition (SCADA) systems..., for all substantive provisions in the rule. Justification PHMSA periodically reviews its pipeline... expediting the implementation deadlines for the selected paragraphs will have significant impact to pipeline...

  8. 76 FR 22944 - Pipeline Safety: Notice of Public Webinars on Implementation of Distribution Integrity Management...

    Science.gov (United States)

    2011-04-25

    ... oversight program and operating conditions as well as the evolutionary process that distribution system... 20590. Hand Delivery: Docket Management System, Room W12-140, on the ground floor of the West Building... PHMSA-2011-0084] Pipeline Safety: Notice of Public Webinars on Implementation of Distribution Integrity...

  9. Living and working near pipelines : Landowner guide 2002

    International Nuclear Information System (INIS)

    Anon

    2002-01-01

    The transportation of natural gas, oil and other commodities is effected by pipelines throughout most of the country. Safety in the vicinity of a pipeline is very important because damage to a pipeline could result in adverse conditions to public safety and/or the environment. Before digging, written approval must be obtained from the pipeline company. If a landowner is having difficulty negotiating an agreement with the pipeline company, they should call the National Energy Board. It is illegal to construct or excavate without authorization, and approval or denial of a request must be granted within 10 business days by the pipeline company. Three days are allowed to the pipeline company to locate its pipeline. A section dealing with pipeline right-of-way is included, as well as the safety zone and the restricted area. A 10-step checklist of safety tips assists the landowner in taking the appropriate measures in the vicinity of a pipeline. A brief overview of the responsibilities of the National Energy Board is provided, followed by a list of the main pipelines regulated by the National Energy Board. 2 figs

  10. Geospatial informatics applications for assessment of pipeline safety and security

    Energy Technology Data Exchange (ETDEWEB)

    Roper, W. [George Mason University, Fairfax, VA (United States). Dept. of Civil, Environmental and Infrastructure

    2005-07-01

    A variety of advanced technologies are available to enhance planning, designing, managing, operating and maintaining the components of the electric utility system. Aerial and satellite remote sensing represents one area of rapid development that can be leveraged to address some of these challenges. Airborne remote sensing can be an effective technology to assist pipeline risk management to assure safety in design, construction, operation, maintenance, and emergency response of pipeline facilities. Industrial and scientific advances in airborne and satellite remote sensing systems and data processing techniques are opening new technological opportunities for developing an increased capability of accomplishing the pipeline mapping and safety needs of the industry. These technologies have significant and unique potential for application to a number of cross cutting energy system security issues. This paper addresses some of the applications of these technologies to pipeline and power industry infrastructure, economics and relative effectiveness of these technologies and issues related to technology implementation and diffusion. (Author)

  11. Report of study group 4.3 ''pipeline integrity management and safety''

    Energy Technology Data Exchange (ETDEWEB)

    Clavel, P.

    2000-07-01

    This report highlights the Pipeline integrity Management methods being implemented by gas companies. These aim at maintaining the current high safety level, prevent major hazards, ensure the integrity of the pipeline and protect people and environment in the vicinity of the pipeline in the most cost effective way. It should be noticed that Pipeline Integrity Management aspects, technical and organisational, are included in the more general framework of the Safety Management System. Currently, more and more gas companies implement such a system on the basis of standards like ISO 9000 and so on. In this way, the report shows how practices of Pipeline Integrity Management are continually developing in order to adapt to their environment, and to improve performance. Past experience and imminent developments show that Pipeline Integrity Management is a flexible and efficient approach to improve safety in the long term. Consequently, Pipeline Integrity Management Systems are, under the control of authorities, the best alternative to additional safety regulations. Within the context of deregulation of the European markets and globalization Pipeline Integrity Management appears to be a tool to promote the gas industry in the eyes of the authorities, the market regulators and the customers (industrialists,...). (author)

  12. Safety installation for preventing pollution by pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Wittgenstein, G F

    1972-10-25

    A safety installation for preventing pollution by pipelines, particularly those used for transporting liquid hydrocarbons, is described. It is applicable to any pipeline, but particularly to underground or submarine pipelines, whether made of steel, plastics, or any other material. The 4 essential objects of the invention are to insure reliable prevention of pollution of the environment due to leakage of a hydrocarbon through cracks in the pipe; to evacuate the leakage flow without delay to a vessel; to signal almost instantaneously the existence of a leak; and to effect remote control of operations by which the dynamic pressure in the pipe is cancelled. Each equipped section consists of a fluid-type jacket of plastic material which surrounds the pipe, which at its ends is sealed off. It is these seals which delimit the sections. (7 claims)

  13. Risk-targeted safety distance of reinforced concrete buildings from natural-gas transmission pipelines

    International Nuclear Information System (INIS)

    Russo, Paola; Parisi, Fulvio

    2016-01-01

    Natural-gas pipeline accidents mostly result in major damage even to buildings located far away. Therefore, proper safety distances should be observed in land use planning to ensure target safety levels for both existing and new buildings. In this paper, a quantitative risk assessment procedure is presented for the estimation of the annual probability of direct structural damage to reinforced concrete buildings associated with high-pressure natural-gas pipeline explosions. The procedure is based on Monte Carlo simulation and takes into account physical features of blast generation and propagation, as well as damage to reinforced concrete columns. The natural-gas jet release process and the flammable cloud size are estimated through SLAB one-dimensional integral model incorporating a release rate model. The explosion effects are evaluated by a Multi-Energy Method. Damage to reinforced concrete columns is predicted by means of pressure–impulse diagrams. The conditional probability of damage was estimated at multiple pressure–impulse levels, allowing blast fragility surfaces to be derived at different performance limit states. Finally, blast risk was evaluated and allowed the estimation of minimum pipeline-to-building safety distances for risk-informed urban planning. The probabilistic procedure presented herein may be used for performance-based design/assessment of buildings and to define the path of new natural-gas pipeline networks. - Highlights: • The safety of buildings against blast loads due to pipeline accidents is assessed. • A probabilistic risk assessment procedure is presented for natural-gas pipelines. • The annual risk of collapse of reinforced concrete building columns is evaluated. • Monte Carlo simulation was carried out considering both pipeline and column features. • A risk-targeted safety distance is proposed for blast strength class 9.

  14. Distributed fiber optic sensing enhances pipeline safety and security

    Energy Technology Data Exchange (ETDEWEB)

    Frings, Jochen; Walk, Tobias [ILF Consulting Engineers, Munich (Germany)

    2011-09-15

    Pipelines are efficient, highly reliable and safe means of transportation. However, despite intensive right of way surveillance by foot, car and out of the air, pipeline leaks and illegal tappings are a reality - sometimes with catastrophic results. These events show a gap in real-time monitoring caused by the highly distributed nature of pipelines. Parts of this gap now can be closed with distributed fiber optic sensing technology. Using various physical effects this technology is apt to detect temperature, strain, vibrations and sound with very good localization over spans up to 50 km with a single sensor cable. Various field tested applications like leakage detection, third party activity monitoring and intrusion detection or ground movement detection as well as integrity monitoring proof that distributed fiber optic sensing can enhance pipeline safety and security. (orig.)

  15. 10 CFR 871.2 - Public health and safety exemption.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Public health and safety exemption. 871.2 Section 871.2 Energy DEPARTMENT OF ENERGY AIR TRANSPORTATION OF PLUTONIUM § 871.2 Public health and safety exemption... property damage, or other significant threat to the public health and safety. [42 FR 48332, Sept. 23, 1977...

  16. The origin of high magnetic properties in (R,Zr)(Fe,Co)11.0–11.5Ti1.0–0.5Ny (y=1.0–1.4 for R=Nd, y=0 for R=Sm) compounds

    International Nuclear Information System (INIS)

    Kobayashi, K.; Suzuki, S.; Kuno, T.; Urushibata, K.; Sakuma, N.; Yano, M.; Shoji, T.; Kato, A.; Manabe, A.

    2017-01-01

    Ten alloys and nitrogenated compounds of (R,Zr)(Fe,Co) 11.0–11.5 Ti 1.0–0.5 N y (y=1.0–1.4 for R=Nd, y=0 for R=Sm) with a ThMn 12 -type structure were prepared. The average Fe–Fe interatomic distances, d(Fe–Fe), for Fe sites were calculated based on the reported atomic parameters. The hyperfine splittings (inner field (IF), in teslas) were measured by Mössbauer spectroscopy, and the IF increased with increasing d(Fe–Fe) for Fe sites, indicating a magneto-volume effect. The order of IF magnitude in Fe sites was Fe(8i)>Fe(8j)>Fe(8f) in all alloys. Co substitution for Fe sites, (Fe 0.75 Co 0.25 ), increased the IF by 25% for the R=Nd alloy and 15% for the R=Sm alloy. Decreasing Ti content from −Ti 1.0 to −Ti 0.5 , which increased the Fe and Co content, preserved the ThMn 12 structure with Zr substitution for R(2a) sites, and caused a slight increase in the IF of 2% for the R=Nd alloy and 7% for the R=Sm alloy. Nitrogenation, where N was introduced into the 2b sites, also increased IF in R=Nd alloys, by 23% for the Co- and Zr-free alloys, NdFe 11 Ti 1.0 N 1.5 , and by 7% for the Co-containing, (Nd 0.7 Zr 0.3 ) (Fe 0.75 Co 0.25 ) 11.5 Ti 0.5 N 1.3 alloy. The IF values of the R=Nd alloys were slightly larger than those of the R=Sm alloys. In conclusion, the magneto-volume effect was clearly observed at the Fe sites, and Co substitution into Fe sites and nitrogenation (R=Nd alloys) compensated for the increased IF. Increasing the Fe and Co fractions also increased IF slightly. - Highlights: • Average distances of Fe–Fe (d(Fe–Fe)) were calculated using lattice constants. • Hyperfine fields (IF) in Fe sites were measured using Mössbauer spectroscopy. • Relationship between d(Fe–Fe) and IF at each Fe site was obtained. • Co substitution and N introduction effects on IF was also measured. • Magneto-volume effect is main reason of IF augmentation in Fe sites.

  17. Leak detection systems as a central component of pipeline safety concepts; Leckueberwachungssysteme als zentrale Bestandteile von Pipeline-Sicherheitskonzepten

    Energy Technology Data Exchange (ETDEWEB)

    Vogt, Daniel [KROHNE Oil and Gas B.V., Breda (Netherlands)

    2013-03-15

    The transport of materials in pipelines is continuously increasing worldwide. Pipelines are one of the most economic and safe transport systems in all directions. In order to ensure this, not only new pipelines but also existing pipelines have to be kept up to date technically. Leakages are a possible safety risk. Leaks are manifold and range from earth quakes, corrosion or material fatigue up to open-up by drilling by thieves. A specific leakage detection often is used in order to limit the risks. The minimization of the consequences of accidents, downtimes and product losses as well as regulatory procedures is the reason for the detection of leakages. Leaks in pipelines can be detected on different kinds - from a simple visual inspection during the inspection up to computer-assisted systems monitoring certain states also in underground and submarine pipeline.

  18. A viable logarithmic f(R) model for inflation

    Energy Technology Data Exchange (ETDEWEB)

    Amin, M.; Khalil, S. [Center for Fundamental Physics, Zewail City of Science and Technology,6 October City, Giza (Egypt); Salah, M. [Center for Fundamental Physics, Zewail City of Science and Technology,6 October City, Giza (Egypt); Department of Mathematics, Faculty of Science, Cairo University,Giza (Egypt)

    2016-08-18

    Inflation in the framework of f(R) modified gravity is revisited. We study the conditions that f(R) should satisfy in order to lead to a viable inflationary model in the original form and in the Einstein frame. Based on these criteria we propose a new logarithmic model as a potential candidate for f(R) theories aiming to describe inflation consistent with observations from Planck satellite (2015). The model predicts scalar spectral index 0.9615r of order 10{sup −3}. Furthermore, we show that for a class of models, a natural coupling between inflation and a scalar boson is generated through the minimal coupling between gravity and matter fields and a reheating temperature less that 10{sup 9} GeV is obtained.

  19. 49 CFR 192.627 - Tapping pipelines under pressure.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Tapping pipelines under pressure. 192.627 Section... NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Operations § 192.627 Tapping pipelines under pressure. Each tap made on a pipeline under pressure must be performed by a crew qualified to make...

  20. Safety-classified steel cylinder reinforced concrete pipelines: mechanism of corrosion, diagnosis and maintenance strategy

    International Nuclear Information System (INIS)

    Aimonino, J.; Jacq, S.

    2015-01-01

    EDF operates 6 km of safety-classified steel cylinder reinforced concrete pipelines spread over 8 PWR nuclear reactors located on the sea coast. These pipelines, placed in galleries, convey approximately 3000 m 3 /h of sea water under a pressure of 4 bar. They have been in operation since the mid eighties or early nineties. Their service life is limited by different scenarios of corrosion by pitting due to the presence of chlorides from sea water. Pipelines are subjected to frequent visual checks that can lead to immediate temporary reinforcement and subsequent replacement. In addition, a diagnosis methodology was developed in order to better anticipate the maintenance operations and in order to assess the remaining service life of pipelines. This methodology combines autopsies of replaced pipes with periodic campaigns of exhaustive half-cell potential mapping. For exhaustive campaigns, the grid spacing was 30 cm x 30 cm, refined to 10 cm x 10 cm in singular zones, on the entire external concrete surface of pipelines, which represents around 6x10 5 measurement points for 6 km of pipelines. Robust specifications were drawn up for the measurement method and the interpretation of the results, initially based on RILEM and ASTM recommendations and then significantly reinforced based on operational feedback. These specifications ensure the implementation and the interpretation of half-cell potential mapping can be carried out on a very large scale and enable the comparison of results between successive campaigns. The diagnosis methodology was a decisive factor in the planning of a preventive maintenance strategy which would enable a pipeline service life of 60 years. (authors)

  1. 76 FR 40648 - Safety Enhancements Part 139, Certification of Airports; Reopening of Comment Period

    Science.gov (United States)

    2011-07-11

    ... that was published on February 1, 2011. In that document, the FAA proposed several safety enhancements...-0247; Notice No. 11-01] RIN 2120-AJ70 Safety Enhancements Part 139, Certification of Airports... comment period for the NPRM published on February 1, 2011 (76 FR 5510) and reopened (76 FR 20570) April 13...

  2. Health, safety and environment risk assessment in gas pipelines by indexing method:case of Kermanshah Sanandaj oil pipeline

    Directory of Open Access Journals (Sweden)

    Y. Hamidi

    2009-10-01

    Full Text Available Background and AimsUsing pipelines for oil products transportation involves ranges of safety, health and environmental risks, this option however, is dominant with numerous  advantages. The purpose of this study was; relative risk assessment of abovementioned risk in Kermanshah-Sanandaj Oil Pipeline.MethodsThe method used in this study was Kent Muhlbauer method in which relative risk was assessed using third-party damage, corrosion, design, incorrect operations and leak impact  factor.ResultsOnce applying this method, collection of required data and performing needed experiments, scoring results showed 96 risk segments along the pipeline length in which lengths 100+860, 101+384 and 103+670 had relative risk scores 9.74, 9.82 and 9.91 respectively and therefore these segments were identified as focal risk points and priority for improvement actions.ConclusionRegarding importance of pipeline failure, inspection and regular patrol along the pipeline route, precise control of cathodic protection of pipeline and using communication technologies such as SCADA or optical fibers along the pipeline route were amongst the mostimportant control action suggested by the study.

  3. Affections cutaneo-muqueuses au cours de l'Infection a VIH /SIDA ...

    African Journals Online (AJOL)

    Les affections dermatologiques sont fréquentes au cours de l'infection par le virus de l'Immunodéficience Humaine (VIH). Nous avons réalisé une étude prospective de janvier à décembre 2003 au service de l'hôpital du jour de Hôpital Central de Yaoundé, afin de répertorier les affections cutanes et muqueuses associées ...

  4. Future dynamics in f(R) theories

    International Nuclear Information System (INIS)

    Mueller, D.; Andrade, V.C. de; Maia, C.; Reboucas, M.J.; Teixeira, A.F.F.

    2015-01-01

    The f(R) gravity theories provide an alternative way to explain the current cosmic acceleration without invoking a dark energy matter component used in the cosmological modeling in the framework of general relativity. However, the freedom in the choice of the functional forms of f(R) gives rise to the problem of the degeneracy among these gravity theories on theoretical and (or) observational grounds. In this paper we examine the question as to whether the future dynamics can be used to break the degeneracy between f(R) gravity theories by investigating the dynamics of spatially homogeneous and isotropic dust flat models in two f(R) gravity theories, namely the well known f(R) = R+αR n gravity and another byAviles et al., whose motivation comes from the cosmographic approach to f(R) gravity. We perform a detailed numerical study of the dynamics of these theories taking into account the recent constraints on the cosmological parameters made by the Planck Collaboration. We demonstrate that besides being useful for discriminating between these two f(R) gravity theories, the future dynamics technique can also be used to determine the finite-time behavior as well as the fate of the Universe in the framework of these f(R) gravity theories. There also emerges from our analysis the result that one still can have a dust flat FLRWsolution with a big rip, if gravity is governed by f(R) = R+αR n . We also show that FLRW dust solutions with f'' < 0 do not necessarily lead to singularities. (orig.)

  5. 75 FR 36773 - Pipeline Safety: Updating Facility Response Plans in Light of the Deepwater Horizon Oil Spill

    Science.gov (United States)

    2010-06-28

    ... have been, or are subsequently relocated to the Gulf to respond to the Deepwater Horizon event should.... PHMSA-2010-0175] Pipeline Safety: Updating Facility Response Plans in Light of the Deepwater Horizon Oil... 194. In light of the Deepwater Horizon oil spill in the Gulf of Mexico, which has resulted in the...

  6. Health, safety and environment risk assessment in gas pipelines by indexing method:case of Kermanshah Sanandaj oil pipeline

    OpenAIRE

    Y. Hamidi; I. Mohamadfam; M. Motamedzadeh

    2009-01-01

    Background and AimsUsing pipelines for oil products transportation involves ranges of safety, health and environmental risks, this option however, is dominant with numerous  advantages. The purpose of this study was; relative risk assessment of abovementioned risk in Kermanshah-Sanandaj Oil Pipeline.MethodsThe method used in this study was Kent Muhlbauer method in which relative risk was assessed using third-party damage, corrosion, design, incorrect operations and leak impact  factor.Results...

  7. 78 FR 58604 - Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders

    Science.gov (United States)

    2013-09-24

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Safety Advisory... Investigator, Eastern Region, Office of Hazardous Materials Safety, Pipeline and Hazardous Materials Safety...

  8. Safety distance between underground natural gas and water pipeline facilities

    International Nuclear Information System (INIS)

    Mohsin, R.; Majid, Z.A.; Yusof, M.Z.

    2014-01-01

    A leaking water pipe bursting high pressure water jet in the soil will create slurry erosion which will eventually erode the adjacent natural gas pipe, thus causing its failure. The standard 300 mm safety distance used to place natural gas pipe away from water pipeline facilities needs to be reviewed to consider accidental damage and provide safety cushion to the natural gas pipe. This paper presents a study on underground natural gas pipeline safety distance via experimental and numerical approaches. The pressure–distance characteristic curve obtained from this experimental study showed that the pressure was inversely proportional to the square of the separation distance. Experimental testing using water-to-water pipeline system environment was used to represent the worst case environment, and could be used as a guide to estimate appropriate safety distance. Dynamic pressures obtained from the experimental measurement and simulation prediction mutually agreed along the high-pressure water jetting path. From the experimental and simulation exercises, zero effect distance for water-to-water medium was obtained at an estimated horizontal distance at a minimum of 1500 mm, while for the water-to-sand medium, the distance was estimated at a minimum of 1200 mm. - Highlights: • Safe separation distance of underground natural gas pipes was determined. • Pressure curve is inversely proportional to separation distance. • Water-to-water system represents the worst case environment. • Measured dynamic pressures mutually agreed with simulation results. • Safe separation distance of more than 1200 mm should be applied

  9. Advanced safety management systems for maintenance of pipeline integrity

    International Nuclear Information System (INIS)

    Borysiewicz, M.; Potempski, S.

    2005-01-01

    One of the duties of the pipeline's operator is to introduce means for protection of human safety and the environment. This should be reflected in preparation of comprehensive Risk Management System with its key element Activity Programme for Management of Pipeline Integrity. In the paper such programme has been described taking into account law regulations and practical activities undertaken in technologically advanced countries (mainly USA and EU), where such solutions are implemented in routine operations. Possible solutions of realization of all elements of the programme, as well as information on utilization of computer aided support have been also included. (authors)

  10. 78 FR 23972 - Pipeline Safety: Information Collection Activities

    Science.gov (United States)

    2013-04-23

    ... reference of the industry standard on leak detection. This recordkeeping requirement supports pipeline... will date stamp the postcard prior to returning it to you via the U.S. mail. Please note that due to... consequence events: Currently, if a release is at least 5 gallons but is less than 5 barrels with no...

  11. Bulletin 2005-12 : revised Alberta pipeline regulation issued

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-05-31

    A revised Pipeline Regulation has been issued and is currently available on the Alberta Energy and Utilities Board (EUB) website. Changes to the regulation reflect bothchanges in EUB regulatory policy and processes and technological improvements. Goals of the revision include improvements in overall pipeline performance, and the implementation of recommendations derived from the Public Safety and Sour Gas Committee concerning sour gas pipeline safety. The regulation was re-organized for greater clarity, and structured into 11 parts. Issues concerning the transition to the revised regulation were presented. The summary of notable administrative changes included clarifications of when a pipeline application is not required; when ABSA approval is required for steam lines; situations for which low-pressure natural gas lines must be licensed; and emergency response requirements. Technical clarifications include requirements for pipeline operations and maintenance manuals; composite materials; limitations on amounts of H{sub 2}S in polymeric pipe; pressure mismatches; approval for testing with gaseous media; venting of small volumes of raw gas; right-of-way surveillance; inspection of surface construction activities; annual corrosion evaluations; registering of pipelines and excavators in controlled areas with Alberta One-Call; ground disturbance training; restoration and signage maintenance on abandoned pipelines; sour service steel pipelines; unused pipelines and abandoned pipelines; and remediation of stub ends in operating pipelines.

  12. INTERSTELLAR PICK-UP IONS OBSERVED BETWEEN 11 AND 22 AU BY NEW HORIZONS

    International Nuclear Information System (INIS)

    Randol, B. M.; McComas, D. J.; Schwadron, N. A.

    2013-01-01

    We report new observations by the Solar Wind Around Pluto instrument on the New Horizons spacecraft, which measures energy per charge (E/q) spectra of solar wind and interstellar pick-up ions (PUIs) between 11 AU and 22 AU from the Sun. The data provide an unprecedented look at PUIs as there have been very few measurements of PUIs beyond 10 AU. We analyzed the PUI part of the spectra by comparing them to the classic Vasyliunas and Siscoe PUI model. Our analysis indicates that PUIs are usually well-described by this distribution. We derive parameters relevant to PUI studies, such as the ionization rate normalized to 1 AU. Our result for the average ionization rate between 11 and 12 AU agrees with an independently derived average value found during the same time. Later, we find a general increase in the ionization rate, which is consistent with the increase in solar activity. We also calculate the PUI thermal pressure, which appears to be roughly consistent with previous results. Through fitting of the solar wind proton peaks in our spectra, we derive solar wind thermal pressures. Based on our analysis, we predict a ratio of PUI thermal pressure to solar wind thermal pressure just inside the termination shock to be between 100 and >1000.

  13. Safety of the medical gas pipeline system

    Directory of Open Access Journals (Sweden)

    Sushmita Sarangi

    2018-01-01

    Full Text Available Medical gases are nowadays being used for a number of diverse clinical applications and its piped delivery is a landmark achievement in the field of patient care. Patient safety is of paramount importance in the design, installation, commissioning, and operation of medical gas pipeline systems (MGPS. The system has to be operational round the clock, with practically zero downtime and its failure can be fatal if not restored at the earliest. There is a lack of awareness among the clinicians regarding the medico-legal aspect involved with the MGPS. It is a highly technical field; hence, an in-depth knowledge is a must to ensure safety with the system.

  14. The origin of high magnetic properties in (R,Zr)(Fe,Co){sub 11.0–11.5}Ti{sub 1.0–0.5}N{sub y} (y=1.0–1.4 for R=Nd, y=0 for R=Sm) compounds

    Energy Technology Data Exchange (ETDEWEB)

    Kobayashi, K., E-mail: koba@ms.sist.ac.jp [Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555 (Japan); Suzuki, S.; Kuno, T.; Urushibata, K. [Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555 (Japan); Sakuma, N.; Yano, M.; Shoji, T.; Kato, A. [Toyota Motor Corporation, 1200 Mishuku, Susono, Shizuoka 410-1193 (Japan); Technology Reserch Association of Magnetic Materials fot High-efficiency Motors (Mag-HEM) Higashifuji-Branch, 1200 Mishuku, Susono, Shizuoka 410-1193, Japan. (Japan); Manabe, A. [Technology Reserch Association of Magnetic Materials fot High-efficiency Motors (Mag-HEM) Higashifuji-Branch, 1200 Mishuku, Susono, Shizuoka 410-1193, Japan. (Japan)

    2017-03-15

    Ten alloys and nitrogenated compounds of (R,Zr)(Fe,Co){sub 11.0–11.5}Ti{sub 1.0–0.5}N{sub y} (y=1.0–1.4 for R=Nd, y=0 for R=Sm) with a ThMn{sub 12}-type structure were prepared. The average Fe–Fe interatomic distances, d(Fe–Fe), for Fe sites were calculated based on the reported atomic parameters. The hyperfine splittings (inner field (IF), in teslas) were measured by Mössbauer spectroscopy, and the IF increased with increasing d(Fe–Fe) for Fe sites, indicating a magneto-volume effect. The order of IF magnitude in Fe sites was Fe(8i)>Fe(8j)>Fe(8f) in all alloys. Co substitution for Fe sites, (Fe{sub 0.75}Co{sub 0.25}), increased the IF by 25% for the R=Nd alloy and 15% for the R=Sm alloy. Decreasing Ti content from −Ti{sub 1.0} to −Ti{sub 0.5}, which increased the Fe and Co content, preserved the ThMn{sub 12} structure with Zr substitution for R(2a) sites, and caused a slight increase in the IF of 2% for the R=Nd alloy and 7% for the R=Sm alloy. Nitrogenation, where N was introduced into the 2b sites, also increased IF in R=Nd alloys, by 23% for the Co- and Zr-free alloys, NdFe{sub 11}Ti{sub 1.0}N{sub 1.5}, and by 7% for the Co-containing, (Nd{sub 0.7}Zr{sub 0.3}) (Fe{sub 0.75}Co{sub 0.25}) {sub 11.5}Ti{sub 0.5}N{sub 1.3} alloy. The IF values of the R=Nd alloys were slightly larger than those of the R=Sm alloys. In conclusion, the magneto-volume effect was clearly observed at the Fe sites, and Co substitution into Fe sites and nitrogenation (R=Nd alloys) compensated for the increased IF. Increasing the Fe and Co fractions also increased IF slightly. - Highlights: • Average distances of Fe–Fe (d(Fe–Fe)) were calculated using lattice constants. • Hyperfine fields (IF) in Fe sites were measured using Mössbauer spectroscopy. • Relationship between d(Fe–Fe) and IF at each Fe site was obtained. • Co substitution and N introduction effects on IF was also measured. • Magneto-volume effect is main reason of IF augmentation in Fe sites.

  15. Gold(I) Complexes with N-Donor Ligands. 2.(1) Reactions of Ammonium Salts with [Au(acac-kappaC(2))(PR(3))] To Give [Au(NH(3))L](+), [(AuL)(2)(&mgr;(2)-NH(2))](+), [(AuL)(4)(&mgr;(4)-N)](+), or [(AuL)(3)(&mgr;(3)-O)](+). A New and Facile Synthesis of [Au(NH(3))(2)](+) Salts. Crystal Structure of [{AuP(C(6)H(4)OMe-4)(3)}(3)(&mgr;(3)-O)]CF(3)SO(3).

    Science.gov (United States)

    Vicente, José; Chicote, María-Teresa; Guerrero, Rita; Jones, Peter G.; Ramírez De Arellano, M. Carmen

    1997-09-24

    The complexes [Au(acac-kappaC(2))(PR(3))] (acac = acetylacetonate, R = Ph, C(6)H(4)OMe-4) react with (NH(4))ClO(4) to give amminegold(I), [Au(NH(3))(PR(3))]ClO(4), amidogold(I), [(AuPR(3))(2)(&mgr;(2)-NH(2))]ClO(4), or nitridogold(I), [(AuPR(3))(4)(&mgr;(4)-N)]ClO(4), complexes, depending on the reaction conditions. Similarly, [Au(acac-kappaC(2))(PPh(3))] reacts with (NH(3)R')OTf (OTf = CF(3)SO(3)) (1:1) or with [H(3)N(CH(2))(2)NH(2)]OTf (1:1) to give (amine)gold(I) complexes [Au(NH(2)R')(PPh(3))]OTf (R' = Me, C(6)H(4)NO(2)-4) or [(AuPPh(3))(2){&mgr;(2)-H(2)N(CH(2))(2)NH(2)}](OTf)(2), respectively. The ammonium salts (NH(2)R'(2))OTf (R' = Et, Ph) react with [Au(acac-kappaC(2))(PR(3))] (R = Ph, C(6)H(4)OMe-4) (1:2) to give, after hydrolysis, the oxonium salts [(AuPR(3))(3)(&mgr;(3)-O)]OTf (R = Ph, C(6)H(4)OMe-4). When NH(3) is bubbled through a solution of [AuCl(tht)] (tht = tetrahydrothiophene), the complex [Au(NH(3))(2)]Cl precipitates. Addition of [Au(NH(3))(2)]Cl to a solution of AgClO(4) or TlOTf leads to the isolation of [Au(NH(3))(2)]ClO(4) or [Au(NH(3))(2)]OTf, respectively. The crystal structure of [(AuPR(3))(3)(&mgr;(3)-O)]OTf.Me(2)CO (R = C(6)H(4)OMe-4) has been determined: triclinic, space group P&onemacr;, a = 14.884(3) Å, b = 15.828(3) Å, c = 16.061(3) Å, alpha = 83.39(3) degrees, beta = 86.28(3) degrees, gamma = 65.54(3) degrees, R1 (wR2) = 0.0370 (0.0788). The [(AuPR(3))(3)(&mgr;(3)-O)](+) cation shows an essentially trigonal pyramidal array of three gold atoms and one oxygen atom with O-Au-P bond angles of ca. 175 degrees and Au.Au contacts in the range 2.9585(7)-3.0505(14) Å. These cations are linked into centrosymmetric dimers through two short Au.Au [2.9585(7), 3.0919(9) Å] contacts. The gold atoms of the dimer form a six-membered ring with a chair conformation.

  16. Novel R pipeline for analyzing Biolog Phenotypic MicroArray data.

    Directory of Open Access Journals (Sweden)

    Minna Vehkala

    Full Text Available Data produced by Biolog Phenotype MicroArrays are longitudinal measurements of cells' respiration on distinct substrates. We introduce a three-step pipeline to analyze phenotypic microarray data with novel procedures for grouping, normalization and effect identification. Grouping and normalization are standard problems in the analysis of phenotype microarrays defined as categorizing bacterial responses into active and non-active, and removing systematic errors from the experimental data, respectively. We expand existing solutions by introducing an important assumption that active and non-active bacteria manifest completely different metabolism and thus should be treated separately. Effect identification, in turn, provides new insights into detecting differing respiration patterns between experimental conditions, e.g. between different combinations of strains and temperatures, as not only the main effects but also their interactions can be evaluated. In the effect identification, the multilevel data are effectively processed by a hierarchical model in the Bayesian framework. The pipeline is tested on a data set of 12 phenotypic plates with bacterium Yersinia enterocolitica. Our pipeline is implemented in R language on the top of opm R package and is freely available for research purposes.

  17. 76 FR 10898 - Public Safety and Homeland Security Bureau; Federal Advisory Committee Act; Emergency Response...

    Science.gov (United States)

    2011-02-28

    ... FEDERAL COMMUNICATIONS COMMISSION Public Safety and Homeland Security Bureau; Federal Advisory..., Public Safety and Homeland Security Bureau, Federal Communications Commission, 445 12th Street, SW., Room..., Public Safety and Homeland Security Bureau. [FR Doc. 2011-4398 Filed 2-25-11; 8:45 am] BILLING CODE 6712...

  18. 16 CFR 460.11 - Rounding off R-values.

    Science.gov (United States)

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Rounding off R-values. 460.11 Section 460.11... INSULATION § 460.11 Rounding off R-values. R-values shown in labels, fact sheets, ads, or other promotional materials must be rounded to the nearest tenth. However, R-values of 10 or more may be rounded to the...

  19. 78 FR 13662 - Cobra Pipeline Ltd.; Notice of Petition

    Science.gov (United States)

    2013-02-28

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket Nos. PR13-32-000; PR13-33-000] Cobra Pipeline Ltd.; Notice of Petition Take notice that on February 4, 2013, Cobra Pipeline Ltd. (Cobra... Docket No. PR13-11-000, as more fully detailed in the petitions. Any person desiring to participate in...

  20. Sequelles de Brulures au Centre Hospitalier Universitaire Ibn Rochd de Casablanca: Aspects Epidemio-Cliniques

    Science.gov (United States)

    Chafiki, N.; Fassi Fihri, J.; Boukind, E.H.

    2007-01-01

    Summary Il s'agit d'une étude épidémiologique des séquelles de brûlures à propos de 100 cas colligés au service de chirurgie réparatrice et de brûlés du centre hospitalier universitaire Ibn Rochd (Casablanca). Les adultes représentent 55% de la population étudiée, l'âge moyen global est de 20 ans. Le sexe féminin est le plus touché avec 61% des cas. Les brûlures survenues à domicile sont les plus fréquentes avec 80%. L'agent causal le plus incriminé est la petite bouteille de butane avec 44,4%. Plus de la moitié de la population brûlée (55%) sont accueillis initialement au niveau d'hôpitaux régionaux. Le délai de cicatrisation moyen de 7 mois et 11 jours et par conséquent les séquelles mineures (dyschromie dans 90% des cas et prurit dans 49% des cas) et majeures (rétractions dans 86% et l'hypertrophie dans 51%) sont fréquentes. La répartition globale des séquelles montre une prédominance du segment cervicocéphalique avec 89% des cas et des membres supérieurs dans 82% des cas. Les différents aspects anatomocliniques essentiels ont été décrits au niveau de chaque segment corporel. Nos résultats ont été comparés aux données de la littérature, ce qui nous amène à considérer qu'une large campagne de prévention couplée à une meilleure prise en charge initiale, précoce, bien conduite et multidisciplinaire permet non seulement de réduire le nombre de séquelles mais aussi de diminuer leur sévérité. PMID:21991060

  1. f(R) gravity solutions for evolving wormholes

    Energy Technology Data Exchange (ETDEWEB)

    Bhattacharya, Subhra [Presidency University, Department of Mathematics, Kolkata (India); Chakraborty, Subenoy [Jadavpur University, Department of Mathematics, Kolkata (India)

    2017-08-15

    The scalar-tensor f(R) theory of gravity is considered in the framework of a simple inhomogeneous space-time model. In this research we use the reconstruction technique to look for possible evolving wormhole solutions within viable f(R) gravity formalism. These f(R) models are then constrained so that they are consistent with existing experimental data. Energy conditions related to the matter threading the wormhole are analyzed graphically and are in general found to obey the null energy conditions (NEC) in regions around the throat, while in the limit f(R) = R, NEC can be violated at large in regions around the throat. (orig.)

  2. 75 FR 72877 - Pipeline Safety: Updates to Pipeline and Liquefied Natural Gas Reporting Requirements

    Science.gov (United States)

    2010-11-26

    ... pipeline facilities that could result in $50,000 damage (the value of a typical residential meter set is a... and to establish a volumetric basis for reporting unexpected or unintentional gas loss. 3. Require... every effort to assure that the outcome of this rulemaking will minimize the need for any future changes...

  3. Comprehensive analysis of pipeline transportation systems for CO2 sequestration. Thermodynamics and safety problems

    International Nuclear Information System (INIS)

    Witkowski, Andrzej; Rusin, Andrzej; Majkut, Mirosław; Rulik, Sebastian; Stolecka, Katarzyna

    2013-01-01

    Highlights: • Comprehensive analysis of the efficiency and safety strategies of transport CO 2 . • Selection of safety zones around pipelines transporting CO 2 . • Optimization of CO 2 pipeline transportation conditions. - Abstract: The aim of this paper is to analyze CO 2 compression and transportation processes with safety issues for post-combustion CO 2 capture applications for basic technological concepts of a 900 MW pulverized coal-fired power plant. Four various types of compressors including a conventional multistage centrifugal compressor, an integrally geared centrifugal compressor, a supersonic shock wave compressor, and pump machines were used. This study emphasizes that total compression power is a strong function of the thermodynamic process and is not only determined by the compressor efficiency. The compressor increases the CO 2 pressure from normal pressure to critical pressure and the boosting pump continues to increase the pressure to the required pressure for the pipeline inlet. Another problem analyzed in this study is the transport of CO 2 by pipeline from the compressor outlet site to the disposal site under heat transfer conditions. Simulations were made to determine maximum safe pipeline distance to subsequent booster stations depending on inlet pressure, environmental temperature, the thermal insulation thickness and the ground level heat transfer conditions. From the point of view of environmental protection, the most important problem is to identify the hazards which indirectly affect CO 2 transportation in a strict and reliable manner. This identification is essential for effective hazard management. A failure of pipelines is usually caused by corrosion, material defects, ground movement or third party interference. After the rupture of the pipeline transporting liquid CO 2 , a large pressure drop will occur. The pressure will continue to fall until the liquid becomes a mixture of saturated vapour/liquid. In the vicinity of the

  4. 49 CFR 244.11 - Contents of a Safety Integration Plan.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Contents of a Safety Integration Plan. 244.11 Section 244.11 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION REGULATIONS ON SAFETY INTEGRATION PLANS GOVERNING RAILROAD...

  5. Determination of safety specifications as for criticality in pipelines systems with intersection

    International Nuclear Information System (INIS)

    Santos, R. dos; Vellozo, S.O.

    1982-01-01

    By the Monte Carlo method, criticality calculations were done for pipelines with several types of reflexion and configurations, filled with solution of plutonium nitrate, with 100 per cent of weight of Pu-239 isotope, in water. From the more simple pipeline intersection condition, type T, an intersection type cross and Double cross are studied. A second central column is aded. The intersections are studied in the minimal, nominal and maximal reflexion condition. Critical safety values are presented for some systems. (E.G.) [pt

  6. 78 FR 16045 - Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders

    Science.gov (United States)

    2013-03-13

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No. PHMSA-2013-0019; Notice No. 13-03] Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Safety Advisory...

  7. 78 FR 28837 - Acadian Gas Pipeline System; Notice of Petition

    Science.gov (United States)

    2013-05-16

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. PR11-129-001] Acadian Gas Pipeline System; Notice of Petition Take notice that on May 6, 2013, Acadian Gas Pipeline System (Acadian... concerns filed in the September 26, 2011 filing, as more fully detailed in the petition. Any person...

  8. 76 FR 12949 - Stingray Pipeline Company, L.L.C.; Notice of Application

    Science.gov (United States)

    2011-03-09

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. CP11-97-000] Stingray Pipeline Company, L.L.C.; Notice of Application On February 22, 2011, Stingray Pipeline Company, L.L.C...--Regulatory Affairs, Stingray Pipeline Company, L.L.C., 1100 Louisiana, Suite 3300, Houston, Texas 77002, by...

  9. Planned and proposed pipeline regulations

    International Nuclear Information System (INIS)

    De Leon, C.

    1992-01-01

    The Research and Special Programs Administration administers the Natural Gas Pipeline Safety Act of 1968 (NGPSA) and the Hazardous Liquid Pipeline Safety Act of 1979 (HLPSA). The RSPA issues and enforces design, construction, operation and maintenance regulations for natural gas pipelines and hazardous liquid pipelines. This paper discusses a number of proposed and pending safety regulations and legislative initiatives currently being considered by the RSPA and the US Congress. Some new regulations have been enacted. The next few years will see a great deal of regulatory activity regarding natural gas and hazardous liquid pipelines, much of it resulting from legislative requirements. The office of Pipeline Safety is currently conducting a study to streamline its operations. This study is analyzing the office's business, social and technical operations with the goal of improving overall efficiency, effectiveness, productivity and job satisfaction to meet the challenges of the future

  10. Safety of long-distance pipelines. Probabilistic and deterministic aspects; Sicherheit von Rohrfernleitungen. Probabilistik und Deterministik im Vergleich

    Energy Technology Data Exchange (ETDEWEB)

    Hollaender, Robert [Leipzig Univ. (Germany). Inst. fuer Infrastruktur und Ressourcenmanagement

    2013-03-15

    The Committee for Long-Distance Pipelines (Berlin, Federal Republic of Germany) reported on the relation between deterministic and probabilistic approaches in order to contribute to a better understanding of the safety management of long-distance pipelines. The respective strengths and weaknesses as well as the deterministic and probabilistic fundamentals of the safety management are described. The comparison includes fundamental aspects, but is essentially determined by the special character of the technical plant 'long-distance pipeline' as an infrastructure project in the area. This special feature results to special operation conditions and related responsibilities. However, our legal system 'long-distance pipeline' does not grant the same legal position in comparison to other infrastructural facilities such as streets and railways. Thus, the question whether and in what manner the impacts from the land-use in the environment of long-distance pipelines have to be considered is again and again the initial point for the discussion on probabilistic and deterministic approaches.

  11. Douleurs induites par les soins: la réalité au Centre Hospitalier Universitaire de Befelatanana Antananarivo, Madagascar

    Science.gov (United States)

    Mahavivola, Ernestho-Ghoud Indretsy; Olivah, Razanaparany Miarisoa Mireille; Mihary, Dodo; Hendriniaina, Rakotoharivelo; Lalao, Randriamboavonjy Rado; Henintsoa, Rakotonirainy Oliva; Fahafahantsoa, Rapelanoro Rabenja

    2014-01-01

    La douleur induite par les soins correspond à la douleur survenant lors des actes à visé diagnostique et/ou thérapeutique. A notre connaissance, nous n'avons pas encore des données disponibles pour les douleurs induites par les soins à l'Hôpital de Befelatanana. Nos objectifs étaient de décrire le profil épidémiologique de la douleur induite par les soins, d'identifier les principaux facteurs influençant sur l'intensité de la douleur et leurs retentissements chez les patients. Il s'agissait d'une étude rétrospective, transversale type un jour donné menée dans les douze services de Médecines au Centre Hospitalier Universitaire de Befelatanana en Novembre 2013. Cent deux patients ont été retenus dans l’étude et trois cent vingt trois actes douloureux étaient enregistrés. La fréquence de la douleur induite par les soins était de 69,86%. Le genre féminin prédominait dans 52% des cas (n = 53) avec un sex-ratio à 0,92. L’âge moyen était de 46 ans. Les ponctions vasculaires étaient l'acte prédominant dans 49,54% (n = 109) des cas. Les infirmiers réalisaient les soins dans 47,05% (n = 48) des cas. L'information verbale était la mesure préventive utilisée dans 57,84% des cas (n = 59). Le transport par marche à pied et au dos représentait 16,67% des cas (n = 17). Les patients naïfs des gestes étaient plus anxieux. Ces patients gardaient de mauvais souvenir dans 64,71% des cas (n = 66). La fréquence de douleur induite par les soins était trop élevée. Un effort important est nécessaire pour réduire la douleur induite par les soins PMID:25932071

  12. 76 FR 4103 - ETC Tiger Pipeline, LLC; Notice of Filing

    Science.gov (United States)

    2011-01-24

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. AC11-25-000] ETC Tiger Pipeline, LLC; Notice of Filing January 13, 2011. Take notice that on December 30, 2010, ETC Tiger Pipeline, LLC submitted a request for a waiver of the reporting requirement to file the FERC Form 2 for 2010...

  13. Exploring plane-symmetric solutions in f(R) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Shamir, M. F., E-mail: farasat.shamir@nu.edu.pk [National University of Computer and Emerging Sciences, Department of Sciences and Humanities (Pakistan)

    2016-02-15

    The modified theories of gravity, especially the f(R) gravity, have attracted much attention in the last decade. This paper is devoted to exploring plane-symmetric solutions in the context of metric f(R) gravity. We extend the work on static plane-symmetric vacuum solutions in f(R) gravity already available in the literature [1, 2]. The modified field equations are solved using the assumptions of both constant and nonconstant scalar curvature. Some well-known solutions are recovered with power-law and logarithmic forms of f(R) models.

  14. 77 FR 36457 - Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Coquí Llanero

    Science.gov (United States)

    2012-06-19

    ...[iacute] llanero (Eleutherodactylus juanariveroi) (a tree frog) under the Endangered Species Act of 1973... Rican tree frog) that was published in the Federal Register on October 12, 2011 (76 FR 63420), our... towers; (8) renewable wind power energy; (9) gas pipeline; (10) closure of landfill; and (11) transfer of...

  15. Les déterminants du statut “perdu de vue” chez les patients pris en charge pour cancer au Maroc: situation avant le Plan Cancer

    Science.gov (United States)

    Najdi, Adil; Berraho, Mohamed; Bendahhou, Karima; Obtel, Majdouline; Zidouh, Ahmed; Errihani, Hassan; Nejjari, Chakib

    2014-01-01

    Introduction Le cancer au Maroc représente un problème majeur de santé publique, sa prise en charge doit être globale, active et complète pour tous les patients. L'objectif de ce travail était d'estimer la fréquence des perdus de vue « PDV » en oncologie au Maroc durant la première année de suivi et de déterminer les facteurs associés à ce problème. Méthodes Par une étude rétrospective portant sur 2854 dossiers de malades hospitalisés dans les trois principaux centres d'oncologie au Maroc depuis janvier 2003 jusqu’à juin 2007 et concernant les cinq principales localisations de cancer au Maroc, nous avons cherché la date des dernières nouvelles des patients ayant un recul de 18 mois minimum afin de déterminer le statut de ces malades après un an de suivi. Résultats La moyenne d’âge était de 52±14 ans, une proportion féminine de 63%, les sujets actifs constituaient 28%, les mariés 71%, les analphabètes 51%, 70% des patients habitaient en milieu urbain et seulement 11% des malades disposaient d'une couverture sociale. La localisation cancéreuse la plus fréquente était le poumon (23,8%) suivie du colon-rectum (23,5%) puis le col (21,9%), le sein (20,4%) et les lymphomes (10,4%). Le taux des «PDV» à un an de suivi était de 48%, ce statut était significativement lié au sexe, à l’âge, au NSE et au statut matrimonial. Sur le plan médical, le statut «PDV» était lié à la localisation du cancer, au stade de diagnostic et au type de traitement reçu. Conclusion Notre étude a mis en évidence la grande ampleur du problème des PDV en cancérologie au Maroc ainsi que ces déterminants. Ces résultats incitent tous les acteurs dans le domaine de la cancérologie à collaborer ensemble pour prendre les mesures qui s'imposent pour y pallier PMID:25400850

  16. 76 FR 73618 - Enterprise Texas Pipeline LLC; Notice of Compliance Filing

    Science.gov (United States)

    2011-11-29

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket Nos. PR11-92-001] Enterprise Texas Pipeline LLC; Notice of Compliance Filing Take notice that on November 22, 2011, Enterprise Texas Pipeline LLC (Enterprise Texas) filed a revised Statement of Operating Conditions to comply with a...

  17. Disentangling the f(R). Duality

    International Nuclear Information System (INIS)

    Broy, Benedict J.; Westphal, Alexander; Pedro, Francisco G.; Univ. Autonoma de Madrid

    2014-11-01

    Motivated by UV realisations of Starobinsky-like inflation models, we study generic exponential plateau-like potentials to understand whether an exact f(R)-formulation may still be obtained when the asymptotic shift-symmetry of the potential is broken for larger field values. Potentials which break the shift symmetry with rising exponentials at large field values only allow for corresponding f(R)-descriptions with a leading order term R n with 1 2 -term survives as part of a series expansion of the function f(R) and thus cannot maintain a plateau for all field values. We further find a lean and instructive way to obtain a function f(R) describing m 2 φ 2 -inflation which breaks the shift symmetry with a monomial, and corresponds to effectively logarithmic corrections to an R+R 2 model. These examples emphasise that higher order terms in f(R)-theory may not be neglected if they are present at all. Additionally, we relate the function f(R) corresponding to chaotic inflation to a more general Jordan frame set-up. In addition, we consider f(R)-duals of two given UV examples, both from supergravity and string theory. Finally, we outline the CMB phenomenology of these models which show effects of power suppression at low-l.

  18. Geodesic congruences in the Palatini f(R) theory

    International Nuclear Information System (INIS)

    Shojai, Fatimah; Shojai, Ali

    2008-01-01

    We shall investigate the properties of a congruence of geodesics in the framework of Palatini f(R) theories. We shall evaluate the modified geodesic deviation equation and the Raychaudhuri's equation and show that f(R) Palatini theories do not necessarily lead to attractive forces. Also, we shall study energy condition for f(R) Palatini gravity via a perturbative analysis of the Raychaudhuri's equation.

  19. 75 FR 76928 - Safety Management System for Certificated Airports; Extension of Comment Period

    Science.gov (United States)

    2010-12-10

    ...-0997; Notice No. 10-14] RIN 2120-AJ38 Safety Management System for Certificated Airports; Extension of... holder to establish a safety management system (SMS) for its entire airfield environment (including... ``Safety Management System for Certificated Airports'' (75 FR 62008). Comments to that document were to be...

  20. Clustering of galaxies with f(R) gravity

    Science.gov (United States)

    Capozziello, Salvatore; Faizal, Mir; Hameeda, Mir; Pourhassan, Behnam; Salzano, Vincenzo; Upadhyay, Sudhaker

    2018-02-01

    Based on thermodynamics, we discuss the galactic clustering of expanding Universe by assuming the gravitational interaction through the modified Newton's potential given by f(R) gravity. We compute the corrected N-particle partition function analytically. The corrected partition function leads to more exact equations of state of the system. By assuming that the system follows quasi-equilibrium, we derive the exact distribution function that exhibits the f(R) correction. Moreover, we evaluate the critical temperature and discuss the stability of the system. We observe the effects of correction of f(R) gravity on the power-law behaviour of particle-particle correlation function also. In order to check the feasibility of an f(R) gravity approach to the clustering of galaxies, we compare our results with an observational galaxy cluster catalogue.

  1. Nonlinear evolution of f(R) cosmologies. I. Methodology

    International Nuclear Information System (INIS)

    Oyaizu, Hiroaki

    2008-01-01

    We introduce the method and the implementation of a cosmological simulation of a class of metric-variation f(R) models that accelerate the cosmological expansion without a cosmological constant and evade solar-system bounds of small-field deviations to general relativity. Such simulations are shown to reduce to solving a nonlinear Poisson equation for the scalar degree of freedom introduced by the f(R) modifications. We detail the method to efficiently solve the nonlinear Poisson equation by using a Newton-Gauss-Seidel relaxation scheme coupled with the multigrid method to accelerate the convergence. The simulations are shown to satisfy tests comparing the simulated outcome to analytical solutions for simple situations, and the dynamics of the simulations are tested with orbital and Zeldovich collapse tests. Finally, we present several static and dynamical simulations using realistic cosmological parameters to highlight the differences between standard physics and f(R) physics. In general, we find that the f(R) modifications result in stronger gravitational attraction that enhances the dark matter power spectrum by ∼20% for large but observationally allowed f(R) modifications. A more detailed study of the nonlinear f(R) effects on the power spectrum are presented in a companion paper.

  2. Solar System constraints to general f(R) gravity

    International Nuclear Information System (INIS)

    Chiba, Takeshi; Smith, Tristan L.; Erickcek, Adrienne L.

    2007-01-01

    It has been proposed that cosmic acceleration or inflation can be driven by replacing the Einstein-Hilbert action of general relativity with a function f(R) of the Ricci scalar R. Such f(R) gravity theories have been shown to be equivalent to scalar-tensor theories of gravity that are incompatible with Solar System tests of general relativity, as long as the scalar field propagates over Solar System scales. Specifically, the parameterized post-Newtonian (PPN) parameter in the equivalent scalar-tensor theory is γ=1/2, which is far outside the range allowed by observations. In response to a flurry of papers that questioned the equivalence of f(R) theory to scalar-tensor theories, it was recently shown explicitly, without resorting to the scalar-tensor equivalence, that the vacuum field equations for 1/R gravity around a spherically symmetric mass also yield γ=1/2. Here we generalize this analysis to f(R) gravity and enumerate the conditions that, when satisfied by the function f(R), lead to the prediction that γ=1/2

  3. Biogenic synthesis of Ag-Au-In decorated on rGO nanosheet and its antioxidant and biological activities

    Science.gov (United States)

    Hazarika, Moushumi; Sonowal, Shashanka; Saikia, Indranirekha; Boruah, Purna K.; Das, Manash R.; Tamuly, Chandan

    2017-09-01

    Au-Ag-In-rGO nanocomposite was synthesized using fruit extract of Zanthoxylum rhetsa which is an eco-friendly, simple and green method. It was characterized by UV-visible, FT-IR, XRD, XPS, EDX, TEM technique. The antioxidant capacity of the nanocomposite was evaluated in presence of AgNO3, HAuCl4 and InCl3 solution respectively at 25 °C. The results showed significant antioxidant activity in presence of 1  ×  10-5 mM AgNO3 solution. The antibacterial activity of Au-Ag-In-rGO nanoparticles was carried out against the gram  -ve bacteria Pseudomonas aeruginosa, Escherichia coli and gram  +ve bacteria Staphylococcus aureus and Bacillus cereus. The bacterial growth kinetics was studied. The bacterial strain E. coli and S. aureus showed complete inhibition at concentration 100 µg ml-1. The activity is more effective in case of Au-Ag-In-rGO compared to GO.

  4. f(R) gravity and chameleon theories

    International Nuclear Information System (INIS)

    Brax, Philippe; Bruck, Carsten van de; Davis, Anne-Christine; Shaw, Douglas J.

    2008-01-01

    We analyze f(R) modifications of Einstein's gravity as dark energy models in the light of their connection with chameleon theories. Formulated as scalar-tensor theories, the f(R) theories imply the existence of a strong coupling of the scalar field to matter. This would violate all experimental gravitational tests on deviations from Newton's law. Fortunately, the existence of a matter dependent mass and a thin-shell effect allows one to alleviate these constraints. The thin-shell condition also implies strong restrictions on the cosmological dynamics of the f(R) theories. As a consequence, we find that the equation of state of dark energy is constrained to be extremely close to -1 in the recent past. We also examine the potential effects of f(R) theories in the context of the Eoet-wash experiments. We show that the requirement of a thin shell for the test bodies is not enough to guarantee a null result on deviations from Newton's law. As long as dark energy accounts for a sizeable fraction of the total energy density of the Universe, the constraints that we deduce also forbid any measurable deviation of the dark energy equation of state from -1. All in all, we find that both cosmological and laboratory tests imply that f(R) models are almost coincident with a ΛCDM model at the background level.

  5. Stellar equilibrium configurations of white dwarfs in the f(R, T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, G.A.; Moraes, P.H.R.S.; Marinho, R.M.; Malheiro, M. [Instituto Tecnologico de Aeronautica, Departamento de Fisica, Sao Jose dos Campos, SP (Brazil); Lobato, R.V. [Instituto Tecnologico de Aeronautica, Departamento de Fisica, Sao Jose dos Campos, SP (Brazil); Sapienza Universita di Roma, Dipartimento di Fisica, Rome (Italy); ICRANet, Pescara (Italy); Arbanil, Jose D.V. [Universidad Privada del Norte, Departamento de Ciencias, Lima (Peru); Otoniel, E. [Universidade Federal do Cariri, Instituto de Formacao de Professores, Brejo Santo, CE (Brazil)

    2017-12-15

    In this work we investigate the equilibrium configurations of white dwarfs in a modified gravity theory, namely, f(R, T) gravity, for which R and T stand for the Ricci scalar and trace of the energy-momentum tensor, respectively. Considering the functional form f(R, T) = R+2λT, with λ being a constant, we obtain the hydrostatic equilibrium equation for the theory. Some physical properties of white dwarfs, such as: mass, radius, pressure and energy density, as well as their dependence on the parameter λ are derived. More massive and larger white dwarfs are found for negative values of λ when it decreases. The equilibrium configurations predict a maximum mass limit for white dwarfs slightly above the Chandrasekhar limit, with larger radii and lower central densities when compared to standard gravity outcomes. The most important effect of f(R, T) theory for massive white dwarfs is the increase of the radius in comparison with GR and also f(R) results. By comparing our results with some observational data of massive white dwarfs we also find a lower limit for λ, namely, λ > -3 x 10{sup -4}. (orig.)

  6. Environment, health and safety guiding principles

    International Nuclear Information System (INIS)

    1997-06-01

    The Canadian Energy Pipeline Association (CEPA) has taken a leadership role in promoting responsible planning, management and work practices that meet the pipeline industry's environment, health and safety objectives. This brochure contains CEPA's environment, health and safety statement. It lists the guiding principles developed and endorsed by CEPA and its member companies in support of protecting the environment and the health and safety of its employees and the public. The 11 CEPA member companies are: Alberta Natural Gas Company Ltd., ATCO Gas Services Ltd., Foothills Pipe Lines Ltd., Interprovincial Pipe Line Inc., NOVA Gas Transmission Limited, TransGas Limited, Trans Mountain Pipe Line Company Ltd., Trans-Northern Pipelines Inc., Trans Quebec and Maritimes Pipeline Inc., and Westcoast Energy Inc

  7. Polish Standard of the Technical Safety of Transmission Gas Pipelines

    International Nuclear Information System (INIS)

    Tkacz, A.J.

    2006-01-01

    The document is presenting the idea of the CNGI Norm called The Polish Standard of the Technical Safety of Transmission Gas Pipelines and the way of using it by companies associated in the Chamber of the Natural Gas Industry in the business activity. It will be applied to improve the quality and reliability of gas transmission after full opening of Polish natural gas market. (author)

  8. Ternary Au/ZnO/rGO nanocomposites electrodes for high performance electrochemical storage devices

    Science.gov (United States)

    Chaudhary, Manchal; Doong, Ruey-an; Kumar, Nagesh; Tseng, Tseung Yuen

    2017-10-01

    The combination of metal and metal oxide nanoparticles with reduced graphene oxides (rGO) is an active electrode material for electrochemical storage devices. Herein, we have, for the first time, reported the fabrication of ternary Au/ZnO/rGO nanocomposites by using a rapid and environmentally friendly microwave-assisted hydrothermal method for high performance supercapacitor applications. The ZnO/rGO provides excellent electrical conductivity and good macro/mesopore structures, which can facilitate the rapid electrons and ions transport. The Au nanoparticles with particle sizes of 7-12 nm are homogeneously distributed onto the ZnO/rGO surface to enhance the electrochemical performance by retaining the capacitance at high current density. The Au/ZnO/rGO nanocomposites, prepared with the optimized rGO amount of 100 mg exhibit a high specific capacitance of 875 and 424 F g-1 at current densities of 1 and 20 A g-1, respectively, in 2 M KOH. In addition, the energy and power densities of ternary Au/ZnO/rGO can be up to 17.6-36.5 Wh kg-1 and 0.27-5.42 kW kg-1, respectively. Results obtained in this study clearly demonstrate the excellence of ternary Au/ZnO/rGO nanocomposites as the active electrode materials for electrochemical pseudocapacitor performance and can open an avenue to fabricate metal/metal oxide/rGO nanocomposites for electrochemical storage devices with both high energy and power densities.

  9. Dynamics of anisotropic power-law f(R) cosmology

    International Nuclear Information System (INIS)

    Shamir, M. F.

    2016-01-01

    Modified theories of gravity have attracted much attention of the researchers in the recent years. In particular, the f(R) theory has been investigated extensively due to important f(R) gravity models in cosmological contexts. This paper is devoted to exploring an anisotropic universe in metric f(R) gravity. A locally rotationally symmetric Bianchi type I cosmological model is considered for this purpose. Exact solutions of modified field equations are obtained for a well-known f(R) gravity model. The energy conditions are also discussed for the model under consideration. The viability of the model is investigated via graphical analysis using the present-day values of cosmological parameters. The model satisfies null energy, weak energy, and dominant energy conditions for a particular range of the anisotropy parameter while the strong energy condition is violated, which shows that the anisotropic universe in f(R) gravity supports the crucial issue of accelerated expansion of the universe.

  10. Dynamics of anisotropic power-law f(R) cosmology

    Energy Technology Data Exchange (ETDEWEB)

    Shamir, M. F., E-mail: farasat.shamir@nu.edu.pk [National University of Computer and Emerging Sciences, Lahore Campus, Department of Sciences and Humanities (Pakistan)

    2016-12-15

    Modified theories of gravity have attracted much attention of the researchers in the recent years. In particular, the f(R) theory has been investigated extensively due to important f(R) gravity models in cosmological contexts. This paper is devoted to exploring an anisotropic universe in metric f(R) gravity. A locally rotationally symmetric Bianchi type I cosmological model is considered for this purpose. Exact solutions of modified field equations are obtained for a well-known f(R) gravity model. The energy conditions are also discussed for the model under consideration. The viability of the model is investigated via graphical analysis using the present-day values of cosmological parameters. The model satisfies null energy, weak energy, and dominant energy conditions for a particular range of the anisotropy parameter while the strong energy condition is violated, which shows that the anisotropic universe in f(R) gravity supports the crucial issue of accelerated expansion of the universe.

  11. Backward emission of protons in Au+Au collisions at 11.7 A.GeV/c

    International Nuclear Information System (INIS)

    Ahle, L.; Akiba, Y.

    1993-08-01

    We present preliminary results for the emission of target rapidity protons in minimum bias and central 11.7 A.GeV/c Au+Au collisions. The data span the pseudo-rapidity range |η| ≤ 0.76 and proton kinetic energy range of 50 ≤ E ≤ 200 MeV. The slopes of the kinetic energy spectra and dN/dη values for central and minimum bias collisions are strikingly similar. Comparison of the results to results for Si+Au and p+A shows that the shape of the dN/dη distribution is independent of the reaction system or centrality suggesting that the spectator matter does not play a decisive role in determining the shape of the proton distributions at back angles for these systems at AGS energies

  12. 78 FR 53790 - Public Forum-Safety Culture: Enhancing Transportation Safety

    Science.gov (United States)

    2013-08-30

    ... NATIONAL TRANSPORTATION SAFETY BOARD Public Forum--Safety Culture: Enhancing Transportation Safety On Tuesday and Wednesday, September 10-11, 2013, the National Transportation Safety Board (NTSB) will convene a forum titled, ``Safety Culture: Enhancing Transportation Safety.'' The forum will begin at 9:00...

  13. Earthquake resistant countermeasures for pipelines in Tokyo gas F.T.R.L.; Etude menee par l'institut de recherches de Tokyo gas et portant sur les mesures antisismiques applicables aux canalisations

    Energy Technology Data Exchange (ETDEWEB)

    Kobayashi, M.; Hosokawa, N.; Watanabe, T. [Tokyo Gas Fundamental Technology Research Lab. (Japan)

    2000-07-01

    Taking 'damage factor', 'ground response', 'soil pipe interaction', and 'deformability of pipes' as its four key concerns, Tokyo Gas F.T.R.L. is working to clarify the behavior of pipelines during strong earthquakes and improve their earthquake resistance to increase safety levels. In specific terms, Tokyo Gas F.T.R.L. has sought to contribute to earthquake resistance by, for example, conducting pipeline damage forecasts, FEM dynamic response analyses to quantify ground amplification, empirical and analytic studies of forces acting on pipelines, various vibration tests, and tests to determine the deforming behavior of pipes. A further important concern given the limited resources available is the prioritization of the pipes to be made more earthquake resistant. Ultimately, these studies should contribute to more rational and effective seismic design of pipelines and improvement of earthquake resistance both in the case of existing and new facilities and equipment. (authors)

  14. De l’utopie socialiste au réalisme chrétien

    Directory of Open Access Journals (Sweden)

    Isabelle Richet

    2006-03-01

    Full Text Available Le New Deal est le premier mouvement réformiste d’ampleur dans l’histoire des Etats‑Unis qui n’ait pas été inspiré, ni soutenu, par les forces du protestantisme. Si une majorité des protestants et de leur clergé se sont opposés au New Deal à partir de positions conservatrices, le théologien Reinhold Niebuhr en a développé au départ une virulente critique de gauche avant de finalement rallier le président démocrate à la fin des années trente. Nourrie par le rejet de l’idéalisme du Social Gospel, incapable à ses yeux de comprendre les rapports sociaux en terme de classe et de pouvoir, la critique de Niebuhr emprunte les outils d’analyse marxistes pour développer une approche réaliste, tant du point de vue des fins que des moyens de la lutte politique. Le New Deal lui apparaît avant tout comme un programme visant à sauver le capitalisme, alors que la société fondée sur la justice qu’il envisage passe par la socialisation des moyens de production qui ne pourra émerger qu’à travers des conflits sociaux au cours desquels les moyens de lutte même violents sont justifiés. Mais sous l’influence des évènements en Europe au lendemain de la victoire d’Hitler, Reinhold Niebuhr se tourne au milieu des années trente vers une réflexion théologique inspirée de l’orthodoxie de Karl Barth et de son frère Richard Niebuhr, qui l’amène à réintroduire le péché comme la limite absolue de toute l’expérience humaine, interdisant d’envisager la création d’une société de paix et de justice. Ce nouvel absolutisme théologique nourrit un relativisme politique, le réalisme chrétien consistant désormais à choisir la moins mauvaise des options en présence. De ce point de vue, le président démocrate qui appelle à la préparation militaire s’impose désormais comme le choix le plus réaliste face à la montée du fascisme en Europe.The New Deal was the first major reformist experiment in the

  15. Towards a Fuzzy Bayesian Network Based Approach for Safety Risk Analysis of Tunnel-Induced Pipeline Damage.

    Science.gov (United States)

    Zhang, Limao; Wu, Xianguo; Qin, Yawei; Skibniewski, Miroslaw J; Liu, Wenli

    2016-02-01

    Tunneling excavation is bound to produce significant disturbances to surrounding environments, and the tunnel-induced damage to adjacent underground buried pipelines is of considerable importance for geotechnical practice. A fuzzy Bayesian networks (FBNs) based approach for safety risk analysis is developed in this article with detailed step-by-step procedures, consisting of risk mechanism analysis, the FBN model establishment, fuzzification, FBN-based inference, defuzzification, and decision making. In accordance with the failure mechanism analysis, a tunnel-induced pipeline damage model is proposed to reveal the cause-effect relationships between the pipeline damage and its influential variables. In terms of the fuzzification process, an expert confidence indicator is proposed to reveal the reliability of the data when determining the fuzzy probability of occurrence of basic events, with both the judgment ability level and the subjectivity reliability level taken into account. By means of the fuzzy Bayesian inference, the approach proposed in this article is capable of calculating the probability distribution of potential safety risks and identifying the most likely potential causes of accidents under both prior knowledge and given evidence circumstances. A case concerning the safety analysis of underground buried pipelines adjacent to the construction of the Wuhan Yangtze River Tunnel is presented. The results demonstrate the feasibility of the proposed FBN approach and its application potential. The proposed approach can be used as a decision tool to provide support for safety assurance and management in tunnel construction, and thus increase the likelihood of a successful project in a complex project environment. © 2015 Society for Risk Analysis.

  16. Virtual georeferencing : how an 11-eyed video camera helps the pipeline industry

    Energy Technology Data Exchange (ETDEWEB)

    Ball, C.

    2006-08-15

    Designed by Immersive Media Corporation (IMC) the new Telemmersion System is a lightweight camera system capable of generating synchronized high-resolution video streams that represent a full motion spherical world. With 11 cameras configured in a sphere, the system is portable and can be easily mounted on ground and air-borne vehicles for use in surveillance; integration; commanded control of interactive intelligent databases; scenario modelling; and specialized training. The system was recently used to georeference immersive video of existing and proposed pipeline routes. Footage from the system was used to supplement traditional data collection methods for environmental impact assessment; route selection and engineering; regulatory compliance; and public consultation. Traditionally, the medium used to visualize pipeline routes is a map overlaid with aerial photography. Pipeline routes are typically flown throughout the planning stages in order to give environmentalists, engineers and other personnel the opportunity to visually inspect the terrain, identify issues and make decisions. The technology has significantly reduced the costs during the planning stages of pipeline routes, as the remote footage can be stored on DVD, allowing various stakeholders and contractors to view the terrain and zoom in on particular land features. During one recent 3-day trip, 500 km of proposed pipeline was recorded using the technology. Typically, for various regulatory and environmental requirements, a half a dozen trips would have been required. 2 figs.

  17. Pipeline system operability review

    Energy Technology Data Exchange (ETDEWEB)

    Eriksson, Kjell [Det Norske Veritas (Norway); Davies, Ray [CC Technologies, Dublin, OH (United States)

    2005-07-01

    Pipeline operators are continuously working to improve the safety of their systems and operations. In the US both liquid and gas pipeline operators have worked with the regulators over many years to develop more systematic approaches to pipeline integrity management. To successfully manage pipeline integrity, vast amounts of data from different sources needs to be collected, overlaid and analyzed in order to assess the current condition and predict future degradation. The efforts undertaken by the operators has had a significant impact on pipeline safety, nevertheless, during recent years we have seen a number of major high profile accidents. One can therefore ask how effective the pipeline integrity management systems and processes are. This paper will present one methodology 'The Pipeline System Operability Review' that can evaluate and rate the effectiveness of both the management systems and procedures, as well as the technical condition of the hardware. The result from the review can be used to compare the performance of different pipelines within one operating company, as well as benchmark with international best practices. (author)

  18. Pipeline system operability review

    Energy Technology Data Exchange (ETDEWEB)

    Eriksson, Kjell [Det Norske Veritas (Norway); Davies, Ray [CC Technologies, Dublin, OH (United States)

    2005-07-01

    Pipeline operators are continuously working to improve the safety of their systems and operations. In the US both liquid and gas pipeline operators have worked with the regulators over many years to develop more systematic approaches to pipeline integrity management. To successfully manage pipeline integrity, vast amounts of data from different sources needs to be collected, overlaid and analyzed in order to assess the current condition and predict future degradation. The efforts undertaken by the operators has had a significant impact on pipeline safety, nevertheless, during recent years we have seen a number of major high profile accidents. One can therefore ask how effective the pipeline integrity management systems and processes are. This paper will present one methodology 'The Pipeline System Operability Review' that can evaluate and rate the effectiveness of both the management systems and procedures, as well as the technical condition of the hardware. The result from the review can be used to compare the performance of different pipelines within one operating company, as well as benchmark with international best practices. (author)

  19. Cosmology of f(R) gravity in the metric variational approach

    Science.gov (United States)

    Li, Baojiu; Barrow, John D.

    2007-04-01

    We consider the cosmologies that arise in a subclass of f(R) gravity with f(R)=R+μ2n+2/(-R)n and n∈(-1,0) in the metric (as opposed to the Palatini) variational approach to deriving the gravitational field equations. The calculations of the isotropic and homogeneous cosmological models are undertaken in the Jordan frame and at both the background and the perturbation levels. For the former, we also discuss the connection to the Einstein frame in which the extra degree of freedom in the theory is associated with a scalar field sharing some of the properties of a “chameleon” field. For the latter, we derive the cosmological perturbation equations in general theories of f(R) gravity in covariant form and implement them numerically to calculate the cosmic microwave background (CMB) temperature and matter power spectra of the cosmological model. The CMB power is shown to reduce at low l’s, and the matter power spectrum is almost scale independent at small scales, thus having a similar shape to that in standard general relativity. These are in stark contrast with what was found in the Palatini f(R) gravity, where the CMB power is largely amplified at low l’s and the matter spectrum is strongly scale dependent at small scales. These features make the present model more adaptable than that arising from the Palatini f(R) field equations, and none of the data on background evolution, CMB power spectrum, or matter power spectrum currently rule it out.

  20. Natural gas pipeline leaks across Washington, DC.

    Science.gov (United States)

    Jackson, Robert B; Down, Adrian; Phillips, Nathan G; Ackley, Robert C; Cook, Charles W; Plata, Desiree L; Zhao, Kaiguang

    2014-01-01

    Pipeline safety in the United States has increased in recent decades, but incidents involving natural gas pipelines still cause an average of 17 fatalities and $133 M in property damage annually. Natural gas leaks are also the largest anthropogenic source of the greenhouse gas methane (CH4) in the U.S. To reduce pipeline leakage and increase consumer safety, we deployed a Picarro G2301 Cavity Ring-Down Spectrometer in a car, mapping 5893 natural gas leaks (2.5 to 88.6 ppm CH4) across 1500 road miles of Washington, DC. The δ(13)C-isotopic signatures of the methane (-38.2‰ ± 3.9‰ s.d.) and ethane (-36.5 ± 1.1 s.d.) and the CH4:C2H6 ratios (25.5 ± 8.9 s.d.) closely matched the pipeline gas (-39.0‰ and -36.2‰ for methane and ethane; 19.0 for CH4/C2H6). Emissions from four street leaks ranged from 9200 to 38,200 L CH4 day(-1) each, comparable to natural gas used by 1.7 to 7.0 homes, respectively. At 19 tested locations, 12 potentially explosive (Grade 1) methane concentrations of 50,000 to 500,000 ppm were detected in manholes. Financial incentives and targeted programs among companies, public utility commissions, and scientists to reduce leaks and replace old cast-iron pipes will improve consumer safety and air quality, save money, and lower greenhouse gas emissions.

  1. Further stable neutron star models from f(R) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Astashenok, Artyom V. [I. Kant Baltic Federal University, Institute of Physics and Technology, Nevskogo st. 14, Kaliningrad, 236041 (Russian Federation); Capozziello, Salvatore [Dipartimento di Fisica, Università di Napoli ' ' Federico II' ' , Via Cinthia, 9, Napoli, I–80126 (Italy); Odintsov, Sergei D., E-mail: artyom.art@gmail.com, E-mail: capozziello@na.infn.it, E-mail: odintsov@ieec.uab.es [Instituciò Catalana de Recerca i Estudis Avançats (ICREA), Barcelona (Spain)

    2013-12-01

    Neutron star models in perturbative f(R) gravity are considered with realistic equations of state. In particular, we consider the FPS, SLy and other equations of state and a case of piecewise equation of state for stars with quark cores. The mass-radius relations for f(R) = R+R(e{sup −R/R{sub 0}}−1) model and for R{sup 2} models with logarithmic and cubic corrections are obtained. In the case of R{sup 2} gravity with cubic corrections, we obtain that at high central densities (ρ > 10ρ{sub ns}, where ρ{sub ns} = 2.7 × 10{sup 14} g/cm{sup 3} is the nuclear saturation density), stable star configurations exist. The minimal radius of such stars is close to 9 km with maximal mass ∼ 1.9M{sub ⊙} (SLy equation). A similar situation takes place for AP4 and BSK20 EoS. Such an effect can give rise to more compact stars than in General Relativity. If observationally identified, such objects could constitute a formidable signature for modified gravity at astrophysical level. Another interesting result can be achieved in modified gravity with only a cubic correction. For some EoS, the upper limit of neutron star mass increases and therefore these EoS can describe realistic star configurations (although, in General Relativity, these EoS are excluded by observational constraints)

  2. Further stable neutron star models from f(R) gravity

    International Nuclear Information System (INIS)

    Astashenok, Artyom V.; Capozziello, Salvatore; Odintsov, Sergei D.

    2013-01-01

    Neutron star models in perturbative f(R) gravity are considered with realistic equations of state. In particular, we consider the FPS, SLy and other equations of state and a case of piecewise equation of state for stars with quark cores. The mass-radius relations for f(R) = R+R(e −R/R 0 −1) model and for R 2 models with logarithmic and cubic corrections are obtained. In the case of R 2 gravity with cubic corrections, we obtain that at high central densities (ρ > 10ρ ns , where ρ ns = 2.7 × 10 14 g/cm 3 is the nuclear saturation density), stable star configurations exist. The minimal radius of such stars is close to 9 km with maximal mass ∼ 1.9M ⊙ (SLy equation). A similar situation takes place for AP4 and BSK20 EoS. Such an effect can give rise to more compact stars than in General Relativity. If observationally identified, such objects could constitute a formidable signature for modified gravity at astrophysical level. Another interesting result can be achieved in modified gravity with only a cubic correction. For some EoS, the upper limit of neutron star mass increases and therefore these EoS can describe realistic star configurations (although, in General Relativity, these EoS are excluded by observational constraints)

  3. Cancer du sein au Cameroun, profil histo-épidémiologique: à propos de 3044 cas

    Science.gov (United States)

    Engbang, Jean Paul Ndamba; Essome, Henri; Koh, Valère Mve; Simo, Godefroy; Essam, Jean Daniel Sime; Mouelle, Albert Sone; Essame, Jean Louis Oyono

    2015-01-01

    Décrire les caractéristiques épidémiologiques et histo-pathologiques des tumeurs malignes du sein au Cameroun. Il s'agissait d'une étude rétrospective descriptive portant sur les tumeurs malignes du sein, colligées, dans les registres des différents laboratoires d'Anatomie Pathologique publiques et privés repartis dans cinq régions (centre, littoral, Ouest, Nord-ouest, Sud-ouest), pendant une période de 10 ans (2004-2013). Les paramètres étudiés étaient la fréquence, l’âge, le sexe, la localisation, le type et le grade histologique, et les récepteurs hormonaux. Un total de 3044 cas de cancers du sein a été recensé, soit une fréquence annuelle de 304,4 cas en moyenne. Le sexe féminin était le plus représenté avec 2971 cas (97,60%) et les hommes avec 73 cas (2,40%), soit un sexe ratio (H/F) de 0,02. L’âge moyen des patients était de 46±15,87 ans, avec des extrêmes de 13 et 95 ans. Selon la localisation, le sein gauche était atteint dans 1244 cas (52%) et le sein droit dans 1115 cas (47%). Au plan histologique, on retrouvait essentiellement des carcinomes avec 96,50% des cas, des sarcomes 1,39%, des lymphomes 1,07% et la maladie de Paget du mamelon, 1,03%. Les tumeurs épithéliales étaient infiltrantes dans 2049 cas (84,46%), avec une prédominance du carcinome canalaire infiltrant (1870 cas) et non infiltrantes dans 377 cas (15,54%). Le grade histo-pronostic de SBR avait révélé une prédominance du grade II dans 66% des cas. Les cancers du sein restent une pathologie fréquente au Cameroun et atteignent principalement la population féminine en âge de procréer. Ils sont caractérisés par la prédominance du carcinome canalaire infiltrant. PMID:26523182

  4. Les fondements de la mesure du temps comment les fréquences atomiques règlent le monde

    CERN Document Server

    Audoin, Claude

    1998-01-01

    La mesure du temps fondée sur des propriétés atomiques est née en 1955, avec le premier étalon de fréquence à jet de césium. Depuis, les horloges atomiques ne cessent de progresser et sont au coeur de nombreuses activités, telles que les comparaisons de temps, l'unification mondiale de l'heure ou la recherche en astronomie, géodésie, géophysique, télécommunications, etc. Cet ouvrage fournira des réponses détaillées au lecteur intéressé par la mesure du temps appliquée aux divers domaines cités.

  5. Diagnostics and reliability of pipeline systems

    CERN Document Server

    Timashev, Sviatoslav

    2016-01-01

    The book contains solutions to fundamental problems which arise due to the logic of development of specific branches of science, which are related to pipeline safety, but mainly are subordinate to the needs of pipeline transportation.          The book deploys important but not yet solved aspects of reliability and safety assurance of pipeline systems, which are vital aspects not only for the oil and gas industry and, in general, fuel and energy industries , but also to virtually all contemporary industries and technologies. The volume will be useful to specialists and experts in the field of diagnostics/ inspection, monitoring, reliability and safety of critical infrastructures. First and foremost, it will be useful to the decision making persons —operators of different types of pipelines, pipeline diagnostics/inspection vendors, and designers of in-line –inspection (ILI) tools, industrial and ecological safety specialists, as well as to researchers and graduate students.

  6. 75 FR 70732 - Enterprise Texas Pipeline LLC; Notice of Baseline Filing

    Science.gov (United States)

    2010-11-18

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. PR10-92-001] Enterprise Texas Pipeline LLC; Notice of Baseline Filing November 10, 2010. Take notice that on November 9, 2010, Enterprise Texas Pipeline LLC submitted a revised baseline filing of its Statement of Operating Conditions...

  7. 21 CFR 610.11 - General safety.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 7 2010-04-01 2010-04-01 false General safety. 610.11 Section 610.11 Food and... GENERAL BIOLOGICAL PRODUCTS STANDARDS General Provisions § 610.11 General safety. A general safety test... for administration to humans. The general safety test is required in addition to other specific tests...

  8. 77 FR 10358 - Acceptance of ASTM F963-11 as a Mandatory Consumer Product Safety Standard

    Science.gov (United States)

    2012-02-22

    ... CONSUMER PRODUCT SAFETY COMMISSION 16 CFR Chapter II Acceptance of ASTM F963-11 as a Mandatory... have accepted the revised ASTM F963-11 standard titled, Standard Consumer Safety Specifications for Toy Safety. Pursuant to section 106 of the Consumer Product Safety Improvement Act of 2008, ASTM F963-11 will...

  9. Closed string tachyon driving f(R) cosmology

    Science.gov (United States)

    Wang, Peng; Wu, Houwen; Yang, Haitang

    2018-05-01

    To study quantum effects on the bulk tachyon dynamics, we replace R with f(R) in the low-energy effective action that couples gravity, the dilaton, and the bulk closed string tachyon of bosonic closed string theory and study properties of their classical solutions. The α' corrections of the graviton-dilaton-tachyon system are implemented in the f(R). We obtain the tachyon-induced rolling solutions and show that the string metric does not need to remain fixed in some cases. In the case with H( t=‑∞ ) = , only the R and R2 terms in f(R) play a role in obtaining the rolling solutions with nontrivial metric. The singular behavior of more classical solutions are investigated and found to be modified by quantum effects. In particular, there could exist some classical solutions, in which the tachyon field rolls down from a maximum of the tachyon potential while the dilaton expectation value is always bounded from above during the rolling process.

  10. Thrombasthénie de Glanzmann: à propos de 11 cas

    Science.gov (United States)

    Mukendi, Jean-Louis Ntumba; Benkirane, Souad; Masrar, Azlarab

    2015-01-01

    Introduction La thrombasthénie de Glanzmann est une pathologie hémorragique héréditaire rare due à une déficience ou un dysfonctionnement du complexe glycoprotéique IIb/IIIa de la membrane plaquettaire. Le but de notre étude est de décrire les caractéristiques démographiques, cliniques et biologiques d'une série de patients atteints de thrombasthénie de Glanzmann. Méthodes C'est une étude portant sur tous les patients atteints de thrombasthénie de Glanzmann diagnostiqués au Laboratoire Central d'Hématologie du Centre Hospitalier Ibn Sina de Rabat au Maroc pendant la période allant du 1er mars 2011 au 31 mars 2013, soit 25 mois. Après avoir recueilli les données épidémiologiques et cliniques de nos patients, nous avons réalisé une étude biologique comportant une numération plaquettaire et une agrégométrie. Résultats 11 patients ont présenté des profils agrégométriques compatibles à une TG. La majorité de ces malades étaient issus de mariages consanguins (54,5%) et originaires de régions situées dans le nord du Maroc. Le syndrome hémorragique s'est révélé principalement cutanéo-muqueux, avec une prédominance des gingivorragies (72,7%), des épistaxis (63,6%) et des ecchymoses (45,5%). Conclusion Nos résultats ont montré que la thrombasthénie de Glanzmann est une pathologie relativement fréquente au Maroc. PMID:26587119

  11. f(R) gravity, torsion and non-metricity

    International Nuclear Information System (INIS)

    Sotiriou, Thomas P

    2009-01-01

    For both f(R) theories of gravity with an independent symmetric connection (no torsion), usually referred to as Palatini f(R) gravity theories, and for f(R) theories of gravity with torsion but no non-metricity, called U4 theories, it has been shown that the independent connection can actually be eliminated algebraically, as long as this connection does not couple to matter. Remarkably, the outcome in both cases is the same theory, which is dynamically equivalent with an ω 0 = -3/2 Brans-Dicke theory. It is shown here that even for the most general case of an independent connection with both non-metricity and torsion, one arrives at exactly the same theory as in the more restricted cases. This generalizes the previous results and explains why assuming that either the torsion or the non-metricity vanishing ultimately leads to the same theory. It also demonstrates that f(R) actions cannot support an independent connection which carries dynamical degrees of freedom, irrespective of how general this connection is, at least as long as there is no connection-matter coupling. (fast track communication)

  12. Standard cosmological evolution in the f(R) model to Kaluza-Klein cosmology

    International Nuclear Information System (INIS)

    Aghmohammadi, A; Abolhassani, M R; Saaidi, Kh; Vajdi, A

    2009-01-01

    In this paper, using f(R) theory of gravity we explicitly calculate cosmological evolution in the presence of a perfect fluid source in four- and five-dimensional space-time in which this cosmological evolution in self-creation is presented by Reddy et al (2009 Int. J. Theor. Phys. 48 10). An exact cosmological model is presented using a relation between Einstein's gravity field equation components due to a metric with the same component from f(R) theory of gravity. Some physics and kinematical properties of the model are also discussed.

  13. Technical consideration of Niigata-Sendai natural gas pipeline; Niigata Sendaikan tennen gas pipeline no seko to gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Tsujimura, O.; Sugai, H.; Koizumi, H. [Kawasaki Steel Corp., Tokyo (Japan)

    1997-09-01

    The Niigata-Sendai natural gas pipeline was constructed in 1996 by Japan Petroleum Exploration Co. to transmit indigenous gas produced off Niigata Pref. and imported gas from Indonesia in the form of LNG to Tohoku Electric Power Co.`s Sendai Thermal Power Station. It is the second longest onshore pipeline in Japan extending 251km (nominal diameter: 20in.). Kawasaki Steel participated in the construction project from the preliminary investigation and planning stage, and constructed a 97km long section, which is approximately 39% of the total length. Various new techniques were applied to secure safety and reduce cost. This paper outlines the project and some of the representative techniques adopted for the project, such as field bends cold-worked on 11m long straight pipes, work management system for constructing long-distance pipelines, coordination for the test runs and verification of the designs. 3 refs., 12 figs., 5 tabs.

  14. Energy Equation Derivation of the Oil-Gas Flow in Pipelines Dérivation de l’équation d’énergie de l’écoulement huile-gaz dans des pipelines

    Directory of Open Access Journals (Sweden)

    Duan J.M

    2012-09-01

    well describe the oil-gas two-phase flow. Lors de la simulation d’un écoulement multiphasique huile-gaz dans une conduite, le calcul thermodynamique représente un processus important en interaction avec le calcul hydraulique; il influence la convergence du programme et la précision des résultats. La forme de l’équation d’énergie constitue la clef du calcul thermodynamique. Basée sur l’équation d’énergie de l’écoulement huile-gaz dans un pipeline, la formule de chute de température explicite (ETDF; Explicit Temperature Drop Formula est dérivée pour un calcul de température d’état stable huile-gaz. Cette nouvelle équation d’énergie prend en compte de nombreux facteurs, tels que l’effet Joule-Thomson, le travail de pression, le travail de frottement, ainsi que l’incidence des ondulations de terrain et le transfert de chaleur avec le milieu extérieur le long de la ligne. Ainsi, il s’agit d’une forme globale de l’équation d’énergie, laquelle pourrait décrire précisément la réalité d’un pipeline à phases multiples. Pour cette raison, un certain nombre de points de vue de la littérature à propos du calcul de température d’un écoulement diphasique huile-gaz dans des pipelines sont passés en revue. L’élimination de la boucle d’itération de température et l’intégration de l’équation de température explicite, au lieu de l’équation d’énergie d’enthalpie, dans le calcul conjugué hydraulique et thermique, se sont avérées améliorer l’efficacité de l’algorithme. Le calcul a été appliqué non seulement au modèle de composants mais aussi au modèle Black-Oil. Ce modèle est incorporé respectivement dans le modèle de composants ainsi que le modèle Black-Oil et deux simulations sont effectuées sur deux pipelines en service, les pipelines multiphasiques Yingmai-Yaha et Lufeng; les résultats de température sont comparés à la simulation calculée par OLGA et aux résultats mesurés. Il

  15. Effective Dark Matter Halo Catalog in f(R) Gravity.

    Science.gov (United States)

    He, Jian-Hua; Hawken, Adam J; Li, Baojiu; Guzzo, Luigi

    2015-08-14

    We introduce the idea of an effective dark matter halo catalog in f(R) gravity, which is built using the effective density field. Using a suite of high resolution N-body simulations, we find that the dynamical properties of halos, such as the distribution of density, velocity dispersion, specific angular momentum and spin, in the effective catalog of f(R) gravity closely mimic those in the cold dark matter model with a cosmological constant (ΛCDM). Thus, when using effective halos, an f(R) model can be viewed as a ΛCDM model. This effective catalog therefore provides a convenient way for studying the baryonic physics, the galaxy halo occupation distribution and even semianalytical galaxy formation in f(R) cosmologies.

  16. Constraints on perturbative f(R) gravity via neutron stars

    Energy Technology Data Exchange (ETDEWEB)

    Arapoğlu, Savaş; Ekşi, K. Yavuz [İstanbul Technical University, Faculty of Science and Letters, Physics Engineering Department, Maslak 34469, İstanbul (Turkey); Deliduman, Cemsinan, E-mail: arapoglu@itu.edu.tr, E-mail: cemsinan@msgsu.edu.tr, E-mail: eksi@itu.edu.tr [Mimar Sinan Fine Arts University, Department of Physics, Beşiktaş 34349, İstanbul (Turkey)

    2011-07-01

    We study the structure of neutron stars in perturbative f(R) gravity models with realistic equations of state. We obtain mass-radius relations in a gravity model of the form f(R) = R+αR{sup 2}. We find that deviations from the results of general relativity, comparable to the variations due to using different equations of state (EoS'), are induced for |α| ∼ 10{sup 9} cm{sup 2}. Some of the soft EoS' that are excluded within the framework of general relativity can be reconciled with the 2 solar mass neutron star recently observed for certain values of α within this range. For some of the EoS' we find that a new solution branch, which allows highly massive neutron stars, exists for values of α greater than a few 10{sup 9} cm{sup 2}. We find constraints on α for a variety of EoS' using the recent observational constraints on the mass-radius relation. These are all 5 orders of magnitude smaller than the recent constraint obtained via Gravity Probe B for this gravity model. The associated length scale √(alpha)approx 10{sup 5} cm is only an order of magnitude smaller than the typical radius of a neutron star, the probe used in this test. This implies that real deviations from general relativity can be even smaller.

  17. Coexistence of plasmonic and magnetic properties in Au89Fe 11 nanoalloys

    KAUST Repository

    Amendola, Vincenzo; Meneghetti, Moreno; Bakr, Osman; Riello, Pietro; Polizzi, Stefano; Anjum, Dalaver H.; Fiameni, Stefania; Arosio, Paolo; Orlando, Tomas; De Julian Fernandez, Cé sar; Pineider, Francesco; Sangregorio, Claudio; Lascialfari, Alessandro

    2013-01-01

    We describe an environmentally friendly, top-down approach to the synthesis of Au89Fe11 nanoparticles (NPs). The plasmonic response of the gold moiety and the magnetism of the iron moiety coexist in the Au 89Fe11 nanoalloy with strong modification compared to single element NPs, revealing a non-linear surface plasmon resonance dependence on the iron fraction and a transition from paramagnetic to a spin-glass state at low temperature. These nanoalloys are accessible to conjugation with thiolated molecules and they are promising contrast agents for magnetic resonance imaging. © 2013 The Royal Society of Chemistry.

  18. Liaison, élision et enchaînement : le rôle de la phonologie et du lexique chez les enfants au début de l’école primaire

    Directory of Open Access Journals (Sweden)

    Ruvoletto Samantha

    2014-07-01

    Dans cette étude nous cherchons d'évaluer de manière détaillée l’importance relative de la phonologie et des connaissances lexicales de 43 enfants français à l’entrée du CP et d'analyser les problématiques causées par les phénomènes consonantiques de liaison, d’élision et d’enchaînement dans cette phase d'acquisition. Les résultats d'une tâche de dénomination guidée montrent que les enfants de 6 ans et demi ont encore des problèmes avec le calcul des frontières des mots en français au début de l'école primaire. De plus dans nos données, la fréquence lexicale des mots tests ne résulte pas corrélée au nombre d'erreurs. Les fautes résiduelles dans la tâche sont donc consécutives à un problème phonologique et pas exclusivement lexical. Le rôle prioritaire de la phonologie à l'entrée de l'école primaire est en accord avec les conclusions de Sprenger-Charolles (1994 qui proposent que la première phase d’apprentissage de la lecture et de l'écriture repose essentiellement sur une analyse phonologique indépendante de la fréquence lexicale.

  19. Wormholes in R{sup 2}-gravity within the f(R, T) formalism

    Energy Technology Data Exchange (ETDEWEB)

    Sahoo, P.K.; Sahoo, Parbati [Birla Institute of Technology and Science-Pilani, Department of Mathematics, Hyderabad (India); Moraes, P.H.R.S. [ITA-Instituto Tecnologico de Aeronautica, Departamento de Fisica, Sao Jose dos Campos, Sao Paulo (Brazil)

    2018-01-15

    We propose, as a novelty in the literature, the modeling of wormholes within a particular case of f(R, T) gravity, namely f(R, T) = R + αR{sup 2} + λT, with R and T being the Ricci scalar and trace of the energy-momentum tensor, respectively, while α and λ are constants. Although such a functional form application can be found in the literature, those concern compact astrophysical objects, such that no wormhole analysis has been done so far. The quadratic geometric and linear material corrections of this theory render the matter content of the wormhole remarkably able to obey the energy conditions. (orig.)

  20. 78 FR 33891 - Safety Advisory: Compressed Gas Cylinders That Have Not Been Tested Properly

    Science.gov (United States)

    2013-06-05

    ... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No... Properly AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Safety... otherwise safely discharged. Cylinders that are filled with a material other than an atmospheric gas should...

  1. Existence of relativistic stars in f(R) gravity

    International Nuclear Information System (INIS)

    Upadhye, Amol; Hu, Wayne

    2009-01-01

    We refute recent claims in the literature that stars with relativistically deep potentials cannot exist in f(R) gravity. Numerical examples of stable stars, including relativistic (GM * /r * ∼0.1), constant density stars, are studied. As a star is made larger, nonlinear 'chameleon' effects screen much of the star's mass, stabilizing gravity at the stellar center. Furthermore, we show that the onset of this chameleon screening is unrelated to strong gravity. At large central pressures P>ρ/3, f(R) gravity, like general relativity, does have a maximum gravitational potential, but at a slightly smaller value: GM * /r * | max =0.345<4/9 for constant density and one choice of parameters. This difference is associated with negative central curvature R under general relativity not being accessed in the f(R) model, but does not apply to any known astrophysical object.

  2. f(R) gravity: scalar perturbations in the late Universe

    Czech Academy of Sciences Publication Activity Database

    Eingorn, M.; Novák, Jan; Zhuk, A.

    2014-01-01

    Roč. 74, č. 8 (2014), s. 3005 ISSN 1434-6044 Institutional support: RVO:67985840 Keywords : nonlinear f(R) gravity * scalar cosmological perturbations * scalaron Subject RIV: BA - General Mathematics Impact factor: 5.084, year: 2014 http://link.springer.com/article/10.1140/epjc/s10052-014-3005-1

  3. Models of f(R) cosmic acceleration that evade solar system tests

    International Nuclear Information System (INIS)

    Hu, Wayne; Sawicki, Ignacy

    2007-01-01

    We study a class of metric-variation f(R) models that accelerates the expansion without a cosmological constant and satisfies both cosmological and solar-system tests in the small-field limit of the parameter space. Solar-system tests alone place only weak bounds on these models, since the additional scalar degree of freedom is locked to the high-curvature general-relativistic prediction across more than 25 orders of magnitude in density, out through the solar corona. This agreement requires that the galactic halo be of sufficient extent to maintain the galaxy at high curvature in the presence of the low-curvature cosmological background. If the galactic halo and local environment in f(R) models do not have substantially deeper potentials than expected in ΛCDM, then cosmological field amplitudes |f R | > or approx.10 -6 will cause the galactic interior to evolve to low curvature during the acceleration epoch. Viability of large-deviation models therefore rests on the structure and evolution of the galactic halo, requiring cosmological simulations of f(R) models, and not directly on solar-system tests. Even small deviations that conservatively satisfy both galactic and solar-system constraints can still be tested by future, percent-level measurements of the linear power spectrum, while they remain undetectable to cosmological-distance measures. Although we illustrate these effects in a specific class of models, the requirements on f(R) are phrased in a nearly model-independent manner

  4. Measures for security and supervision of pipelines; Massnahmen zur Pipeline-Sicherheit und -Ueberwachung

    Energy Technology Data Exchange (ETDEWEB)

    Horlacher, Hans-Burkhard [TU Dresden (Germany). Inst. fuer Wasserbau und Technische Hydromechanik; Giesecke, Juergen [Stuttgart Univ. (Germany). Inst. fuer Wasserbau

    2010-07-01

    In a previous publication, the two authors dealt with the hydraulic problems as regards mineral oil pipelines. The present report describes the measures mainly used to guarantee the safety of such pipelines. (orig.)

  5. f(R) gravity cosmology in scalar degree of freedom

    International Nuclear Information System (INIS)

    Goswami, Umananda Dev; Deka, Kabita

    2014-01-01

    The models of f(R) gravity belong to an important class of modified gravity models where the late time cosmic accelerated expansion is considered as the manifestation of the large scale modification of the force of gravity. f(R) gravity models can be expressed in terms of a scalar degree of freedom by explicit redefinition of model's variable. Here we report about the study of the features of cosmological parameters and hence the cosmological evolution using the scalar degree of freedom of the f(R) = ξR n gravity model in the Friedmann-Lemaître-Robertson-Walker (FLRW) background

  6. Innovations en apprentissage numérique pour les réfugiés syriens ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Les répercussions du conflit syrien et de la conséquente crise des réfugiés syriens sur les systèmes scolaires en Jordanie et au Liban sont très lourdes. Selon les estimations, quelque 714 000 enfants syriens déplacés ne fréquentent pas l'école et environ la moitié de ce nombre est en Jordanie et au Liban. Plus de 100 ...

  7. Constraint propagation equations of the 3+1 decomposition of f(R) gravity

    International Nuclear Information System (INIS)

    Paschalidis, Vasileios; Shapiro, Stuart L; Halataei, Seyyed M H; Sawicki, Ignacy

    2011-01-01

    Theories of gravity other than general relativity (GR) can explain the observed cosmic acceleration without a cosmological constant. One such class of theories of gravity is f(R). Metric f(R) theories have been proven to be equivalent to Brans-Dicke (BD) scalar-tensor gravity without a kinetic term (ω = 0). Using this equivalence and a 3+1 decomposition of the theory, it has been shown that metric f(R) gravity admits a well-posed initial value problem. However, it has not been proven that the 3+1 evolution equations of metric f(R) gravity preserve the (Hamiltonian and momentum) constraints. In this paper, we show that this is indeed the case. In addition, we show that the mathematical form of the constraint propagation equations in BD-equilavent f(R) gravity and in f(R) gravity in both the Jordan and Einstein frames is exactly the same as in the standard ADM 3+1 decomposition of GR. Finally, we point out that current numerical relativity codes can incorporate the 3+1 evolution equations of metric f(R) gravity by modifying the stress-energy tensor and adding an additional scalar field evolution equation. We hope that this work will serve as a starting point for relativists to develop fully dynamical codes for valid f(R) models.

  8. 75 FR 38799 - ETC Tiger Pipeline, LLC; Notice of Application

    Science.gov (United States)

    2010-07-06

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. CP10-459-000] ETC Tiger Pipeline, LLC; Notice of Application June 25, 2010. Take notice that on June 15, 2010, ETC Tiger Pipeline, LLC (ETC Tiger), 711 Louisiana Street, Suite 900, Houston, Texas 77002, filed an application in Docket...

  9. Application of Fracture-Mechanics Approach to Gas Pipelines

    Czech Academy of Sciences Publication Activity Database

    Gajdoš, Lubomír; Šperl, Martin

    VII, č. 73 (2011), s. 480-487 ISSN 2010-376X R&D Projects: GA ČR(CZ) GAP105/10/2052; GA ČR(CZ) GPP105/10/P555 Grant - others:GAMPO(CZ) FT-TA5/076 Program:FT Institutional research plan: CEZ:AV0Z20710524 Keywords : axial crack * fracture-mechanics * J integral * pipeline wall Subject RIV: JL - Materials Fatigue, Friction Mechanics

  10. Rhea: a transparent and modular R pipeline for microbial profiling based on 16S rRNA gene amplicons.

    Science.gov (United States)

    Lagkouvardos, Ilias; Fischer, Sandra; Kumar, Neeraj; Clavel, Thomas

    2017-01-01

    The importance of 16S rRNA gene amplicon profiles for understanding the influence of microbes in a variety of environments coupled with the steep reduction in sequencing costs led to a surge of microbial sequencing projects. The expanding crowd of scientists and clinicians wanting to make use of sequencing datasets can choose among a range of multipurpose software platforms, the use of which can be intimidating for non-expert users. Among available pipeline options for high-throughput 16S rRNA gene analysis, the R programming language and software environment for statistical computing stands out for its power and increased flexibility, and the possibility to adhere to most recent best practices and to adjust to individual project needs. Here we present the Rhea pipeline, a set of R scripts that encode a series of well-documented choices for the downstream analysis of Operational Taxonomic Units (OTUs) tables, including normalization steps, alpha - and beta -diversity analysis, taxonomic composition, statistical comparisons, and calculation of correlations. Rhea is primarily a straightforward starting point for beginners, but can also be a framework for advanced users who can modify and expand the tool. As the community standards evolve, Rhea will adapt to always represent the current state-of-the-art in microbial profiles analysis in the clear and comprehensive way allowed by the R language. Rhea scripts and documentation are freely available at https://lagkouvardos.github.io/Rhea.

  11. Rhea: a transparent and modular R pipeline for microbial profiling based on 16S rRNA gene amplicons

    Directory of Open Access Journals (Sweden)

    Ilias Lagkouvardos

    2017-01-01

    Full Text Available The importance of 16S rRNA gene amplicon profiles for understanding the influence of microbes in a variety of environments coupled with the steep reduction in sequencing costs led to a surge of microbial sequencing projects. The expanding crowd of scientists and clinicians wanting to make use of sequencing datasets can choose among a range of multipurpose software platforms, the use of which can be intimidating for non-expert users. Among available pipeline options for high-throughput 16S rRNA gene analysis, the R programming language and software environment for statistical computing stands out for its power and increased flexibility, and the possibility to adhere to most recent best practices and to adjust to individual project needs. Here we present the Rhea pipeline, a set of R scripts that encode a series of well-documented choices for the downstream analysis of Operational Taxonomic Units (OTUs tables, including normalization steps, alpha- and beta-diversity analysis, taxonomic composition, statistical comparisons, and calculation of correlations. Rhea is primarily a straightforward starting point for beginners, but can also be a framework for advanced users who can modify and expand the tool. As the community standards evolve, Rhea will adapt to always represent the current state-of-the-art in microbial profiles analysis in the clear and comprehensive way allowed by the R language. Rhea scripts and documentation are freely available at https://lagkouvardos.github.io/Rhea.

  12. Robust approach to f(R) gravity

    International Nuclear Information System (INIS)

    Jaime, Luisa G.; Patino, Leonardo; Salgado, Marcelo

    2011-01-01

    We consider metric f(R) theories of gravity without mapping them to their scalar-tensor counterpart, but using the Ricci scalar itself as an ''extra'' degree of freedom. This approach avoids then the introduction of a scalar-field potential that might be ill defined (not single valued). In order to explicitly show the usefulness of this method, we focus on static and spherically symmetric spacetimes and deal with the recent controversy about the existence of extended relativistic objects in certain class of f(R) models.

  13. Possible antigravity regions in F(R) theory?

    Energy Technology Data Exchange (ETDEWEB)

    Bamba, Kazuharu, E-mail: bamba@kmi.nagoya-u.ac.jp [Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602 (Japan); Nojiri, Shin' ichi, E-mail: nojiri@phys.nagoya-u.ac.jp [Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602 (Japan); Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Odintsov, Sergei D., E-mail: odintsov@ieec.uab.es [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Instituciò Catalana de Recerca i Estudis Avançats (ICREA), Barcelona (Spain); Institut de Ciencies de l' Espai (CSIC-IEEC), Campus UAB, Facultat de Ciencies, Torre C5-Par-2a pl, E-08193 Bellaterra (Barcelona) (Spain); Tomsk State Pedagogical University, Kievskaya Avenue, 60, 634061, Tomsk (Russian Federation); Sáez-Gómez, Diego, E-mail: diego.saezgomez@uct.ac.za [Astrophysics, Cosmology and Gravity Centre (ACGC) and Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, Cape Town (South Africa); Fisika Teorikoaren eta Zientziaren Historia Saila, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao (Spain)

    2014-03-07

    We construct an F(R) gravity theory corresponding to the Weyl invariant two scalar field theory. We investigate whether such F(R) gravity can have the antigravity regions where the Weyl curvature invariant does not diverge at the Big Bang and Big Crunch singularities. It is revealed that the divergence cannot be evaded completely but can be much milder than that in the original Weyl invariant two scalar field theory.

  14. Holographic dark energy and f(R) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Aghamohammadi, A [Faculty of Science, Islamic Azad University of Sanandaj, Sanandaj (Iran, Islamic Republic of); Saaidi, Kh, E-mail: ksaaidi@uok.ac.ir, E-mail: agha35484@yahoo.com [Department of Physics, Faculty of Science, University of Kurdistan, Sanandaj (Iran, Islamic Republic of)

    2011-02-15

    We investigate the corresponding relation between f(R) gravity and holographic dark energy. We introduce a type of energy density from f(R) that has the same role as holographic dark energy. We obtain the differential equation that specifies the evolution of the introduced energy density parameter based on a varying gravitational constant. We discover the relation for the equation of state parameter for low redshifts that contains varying G correction.

  15. Possible antigravity regions in F(R) theory?

    Science.gov (United States)

    Bamba, Kazuharu; Nojiri, Shin'ichi; Odintsov, Sergei D.; Sáez-Gómez, Diego

    2014-03-01

    We construct an F(R) gravity theory corresponding to the Weyl invariant two scalar field theory. We investigate whether such F(R) gravity can have the antigravity regions where the Weyl curvature invariant does not diverge at the Big Bang and Big Crunch singularities. It is revealed that the divergence cannot be evaded completely but can be much milder than that in the original Weyl invariant two scalar field theory.

  16. Possible antigravity regions in F(R) theory?

    International Nuclear Information System (INIS)

    Bamba, Kazuharu; Nojiri, Shin'ichi; Odintsov, Sergei D.; Sáez-Gómez, Diego

    2014-01-01

    We construct an F(R) gravity theory corresponding to the Weyl invariant two scalar field theory. We investigate whether such F(R) gravity can have the antigravity regions where the Weyl curvature invariant does not diverge at the Big Bang and Big Crunch singularities. It is revealed that the divergence cannot be evaded completely but can be much milder than that in the original Weyl invariant two scalar field theory.

  17. f(R) constant-roll inflation

    Energy Technology Data Exchange (ETDEWEB)

    Motohashi, Hayato [Universidad de Valencia-CSIC, Instituto de Fisica Corpuscular (IFIC), Valencia (Spain); Starobinsky, Alexei A. [L.D. Landau Institute for Theoretical Physics, RAS, Moscow (Russian Federation); National Research University Higher School of Economics, Moscow (Russian Federation)

    2017-08-15

    The previously introduced class of two-parametric phenomenological inflationary models in general relativity in which the slow-roll assumption is replaced by the more general, constant-roll condition is generalized to the case of f(R) gravity. A simple constant-roll condition is defined in the original Jordan frame, and exact expressions for a scalaron potential in the Einstein frame, for a function f(R) (in the parametric form) and for inflationary dynamics are obtained. The region of the model parameters permitted by the latest observational constraints on the scalar spectral index and the tensor-to-scalar ratio of primordial metric perturbations generated during inflation is determined. (orig.)

  18. IMS Learning Design : la flexibilité pédagogique au service des besoins de la e-formation

    NARCIS (Netherlands)

    Burgos, Daniel; Arnaud, Michel; Neuhauser, Patrick; Koper, Rob

    2005-01-01

    Burgos, D., Arnaud, M., Neuhauser, P., Koper, R. IMS Learning Design : la flexibilité pédagogique au service des besoins de la e-formation. In La Revue de l'EPI. France: L'association Enseignement Public et Informatique [http://www.epi.asso.fr/revue/articsom.htm]. Available at

  19. 77 FR 1656 - Proposed Establishment of Restricted Areas R-5402, R-5403A, R-5403B, R-5403C, R-5403D, R-5403E, R...

    Science.gov (United States)

    2012-01-11

    ...-0117; Airspace Docket No. 09-AGL-31] RIN 2120-AI92 Proposed Establishment of Restricted Areas R-5402, R-5403A, R- 5403B, R-5403C, R-5403D, R-5403E, R-5403F; Devils Lake, ND AGENCY: Federal Aviation... Restricted Areas R-5402, R-5403A, R-5403B, R- 5403C, R-5403D, R-5403E, R-5403F; Devils Lake, ND (76 FR 72869...

  20. Accouchement gémellaire en milieu africain: une analyse de 10 ans dans le district de Bamako au Mali

    Science.gov (United States)

    Théra, Tiounkani; Mounkoro, Niani; Traore, Soumana Omar; Hamidou, Albachar; Traore, Mamadou; Doumbia, Saleck; Tall, Saoudatou; Kouma, Aminata

    2018-01-01

    Introduction Le but de cette étude était de déterminer les facteurs influençant le pronostic de l'accouchement du deuxième jumeau. Méthodes L'étude était rétrospective et a porté sur tous les cas d'accouchements gémellaires enregistrés à la maternité du Centre de Santé de Référence de la commune V du District de Bamako du 1erJanvier 2007 au 31 Décembre 2016 soit sur une période de dix ans. Résultats Nous avons enregistré 34.899 accouchements dont 1374 accouchements gémellaires soit une fréquence de 2,54%; près de 15% étaient des primipares; 39,16% étaient référées; 69,10% et 15,5% autres sans aucun suivi prénatal. Les facteurs influençant négativement pronostic du deuxième jumeau étaient: un délai ≥ 15minutes entre les jumeaux, le recours tardif à la césarienne, la non qualification de l'accoucheur, la grossesse monochoréale, le faible poids de naissance. Par contre la parité, la réalisation de manœuvres obstétricales n'avaient aucune influence sur le pronostic du deuxième jumeau. Conclusion Le pronostic du deuxième jumeau est fortement influencé par un délai de naissance de plus de 15 minutes entre les jumeaux, les autres facteurs agissant comme des cofacteurs. PMID:29662606

  1. Stellar configurations in f(R) theories of gravity

    International Nuclear Information System (INIS)

    Henttunen, K.; Multamaeki, T.; Vilja, I.

    2008-01-01

    We study stellar configurations and the space-time around them in metric f(R) theories of gravity. In particular, we focus on the polytropic model of the Sun in two specific cases: the f(R)=R-μ 4 /R model and a model with a stabilizing higher order term f(R)=R-μ 4 /R+βR 3 /(3μ 4 ). We show how the stellar configuration in the f(R) theory can, by appropriate initial conditions, be selected to be equal to that described by the Lane-Emden equation and how a simple scaling relation exists between the solutions. We also derive the correct solution analytically near the center of the star in f(R) theory. Previous analytical and numerical results are confirmed, indicating that the space-time around the Sun is incompatible with solar system constraints in the f(R)=R-μ 4 /R model. Numerical work shows that stellar configurations, with a regular metric at the center, lead to γ PPN ≅1/2 outside the star for both models, i.e., the Schwarzschild-de Sitter space-time is not the correct vacuum solution for such configurations. This shows that even when one fine-tunes the initial conditions inside a star such that the mass of the effective scalar in the equivalent scalar-tensor theory is large, γ PPN is still 1/2 outside the star. Conversely, by selecting the Schwarzschild-de Sitter metric as the outside solution, or equivalently setting the mass of the effective scalar to be large outside the star, we find that the stellar configuration is unchanged but the metric is irregular at the center. The possibility of constructing a f(R) theory compatible with the solar system experiments and possible new constraints arising from the radius-mass relation of stellar objects is discussed

  2. Cosmological reconstruction of realistic modified F(R) gravities

    International Nuclear Information System (INIS)

    Nojiri, Shin'ichi; Odintsov, Sergei D.; Saez-Gomez, Diego

    2009-01-01

    The cosmological reconstruction scheme for modified F(R) gravity is developed in terms of e-folding (or, redshift). It is demonstrated how any FRW cosmology may emerge from specific F(R) theory. The specific examples of well-known cosmological evolution are reconstructed, including ΛCDM cosmology, deceleration with transition to phantom superacceleration era which may develop singularity or be transient. The application of this scheme to viable F(R) gravities unifying inflation with dark energy era is proposed. The additional reconstruction of such models leads to non-leading gravitational correction mainly relevant at the early/late universe and helping to pass the cosmological bounds (if necessary). It is also shown how cosmological reconstruction scheme may be generalized in the presence of scalar field.

  3. Les réseaux d’investissement dans le thermalisme au XIXe siècle en France

    Directory of Open Access Journals (Sweden)

    Jérôme Penez

    2004-03-01

    Full Text Available Le XIXe siècle est le siècle de la « fièvre thermale » en France. Pour permettre cet extraordinaire développement, l’argent est nécessaire. La station thermale apparaît comme un eldorado où la fortune est à portée de la main. Cette fortune n’est pourtant pas si facile à obtenir, la gestion thermale est ingrate, et les centaines de villes d’eaux françaises ne peuvent pas toutes obtenir un succès comparable à celui de Vichy ou d’Aix-les-Bains. Le thermalisme français est diversité, diversité dans les réussites, diversité dans les types de gestion (de la gestion étatique à la gestion privée, diversité dans sa fréquentation, diversité dans ses périodes de développement, diversité dans les moyens de son financement. Etudier l’importance ou au contraire la rareté des réseaux d’investissement dans le thermalisme permet de lever une partie du voile de l’histoire encore bien mystérieuse des villes d’eaux françaises.

  4. Applications of ZigBee Technology in the Safety Monitoring System of Low Gas Pipeline Transportation

    Directory of Open Access Journals (Sweden)

    Wei Deyu

    2015-01-01

    Full Text Available The existing safety monitoring system of low gas pipeline transportation establishes a wired communication network monitoring system mainly on the basis of industrial bus. It has problems such as large transmission signal attenuation, complex wiring, high-labor intensity, inconvenient installation and maintenance, high maintenance cost, and so on. Featuring low cost, power-saving, reliability, stability and flexibility, the wireless sensor network established by ZigBee wireless communication technology can realize the real-time all-dimensional dynamic monitoring on parameters of low gas pipeline transportation system and overcome the shortcomings and deficiencies of wired network system.

  5. 75 FR 33696 - Safety Zone: July Firework Display in Captain of the Port, Puget Sound AOR

    Science.gov (United States)

    2010-06-15

    ...-AA00 Safety Zone: July Firework Display in Captain of the Port, Puget Sound AOR AGENCY: Coast Guard... Captain of the Port, Puget Sound AOR. (a) Safety Zone. The following area is a designated safety zone: all..., Captain of the Port, Puget Sound. [FR Doc. 2010-14294 Filed 6-14-10; 8:45 am] BILLING CODE 9110-04-P ...

  6. Hossegor (Landes, une station au cœur des réseaux de villégiature

    Directory of Open Access Journals (Sweden)

    Claude Laroche

    2012-04-01

    Full Text Available La station balnéaire d’Hossegor (Landes a connu son véritable lancement à partir de 1923, alors que le site avait été révélé quelques années auparavant, au tout début du siècle, par les séjours d’un groupe d’écrivains, parmi lesquels J.-H. Rosny jeune (1859-1948, Maxime Leroy (1873-1957 et Paul Margueritte (1860-1918. A partir de cet exemple landais, l’exposé tend à démontrer combien la création d’une station balnéaire, de sa découverte à sa promotion en passant par sa révélation au monde extérieur, doit au jeu des réseaux de tous ordres. Contemplatifs, les premiers occupants d’Hossegor n’auront pourtant de cesse de faire connaître le lieu en s’appuyant pour cela sur un puissant réseau de relations, notamment journalistiques. Actif, le promoteur de la station, Alfred Eluère (1893-1985, ne pourra assurer son succès qu’en utilisant le cercle relationnel très ouvert et très efficace que ses multiples activités – immobilières, mais aussi sportives et politiques – l’auront amené à constituer. Sa venue à Hossegor n’est d’ailleurs rien d’autre que le résultat de circonstances permises par le jeu de tout un tissu de relations au milieu duquel on trouve entre autres Maurice Martin (1861-1941, personnage haut en couleur, journaliste cultivant lui aussi au plus haut point le réseau des connaissances. Une fois la station lancée, la promotion immobilière saura jouer de tous les ressorts offerts par ces différents réseaux pour amener sur place la clientèle : de la propagande journalistique au réseau des agences immobilières en passant par le propre réseau relationnel d’Eluère. Parallèlement, le réseau des architectes sera lui aussi particulièrement actif, que ce soit pour s’attirer la commande ou pour propager la formule régionaliste. En conclusion, à côté de l’histoire officielle des stations balnéaires – une histoire au premier degré que les archives documentent

  7. 78 FR 66326 - Hazardous Materials: Rail Petitions and Recommendations To Improve the Safety of Railroad Tank...

    Science.gov (United States)

    2013-11-05

    ...: Rail Petitions and Recommendations To Improve the Safety of Railroad Tank Car Transportation (RRR) AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Advance Notice of... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration 49 CFR Parts...

  8. 75 FR 38802 - DCP Raptor Pipeline, LLC; Notice of Baseline Filing

    Science.gov (United States)

    2010-07-06

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. PR10-42-000] DCP Raptor Pipeline, LLC; Notice of Baseline Filing June 28, 2010. Take notice that on June 22, 2010, DCP Raptor Pipeline, LLC submitted a baseline filing of its Statement of Operating Conditions for services provided...

  9. Les séquelles de brûlures cervicales: aspects épidémiologique, clinique et thérapeutique au Maroc

    Science.gov (United States)

    Rafik, Amine; Chabak, Hakim; Diouri, Mounia; Bahechar, Naïma; Chlihi, Abdessamad

    2015-01-01

    Les séquelles de brûlures cervicales représentent une entité fréquente des séquelles de brûlure, elles affectent la fonction, l'esthétique et l’état psychologique des patients et peuvent être de traitement difficile. Il s'agit d'une étude rétrospective étalée sur 5 ans de Mars 2009 au Octobre2014, réalisée au centre national des brûlés et de chirurgie plastique au CHU Ibn Rochd Casablanca. Nous avons analysé les caractéristiques épidémiologiqueset cliniques ainsi que les indications et les résultats thérapeutiques chez 300 patients présentant des rétractions cervicales post-brûlure, suivis dans notre formation. Les jeunes femmes étaient le plus souvent touchées (56%). la brûlure thermique par flamme de butane dans le cadre d'accident domestique était l’étiologie la plus fréquente (91%).75% des patients ont été pris en charge dans un délai de 18 mois après avoir présenté une incapacité fonctionnelle. Les brides cervicales modérées et sévères sont les plus fréquentes et représentent respectivement 60% et 16% des cas. Le traitement chirurgical a fait appel aux greffes cutanées dans 67%des cas, aux plasties locales dans 24%des cas et aux lambeaux dans 24% des cas, les résultats sont jugés bons dans 75%des cas et moyens dans 18% des cas, tandis que les cas restants (7%) ont nécessité une reprise chirurgicale. Le traitement des brides cervicales doit être associé à un programme de rééducation adapté, afin d'assurer la pérennité des résultats fonctionnels et esthétiques. PMID:26301017

  10. Crystal structure of (1R,3S,8R,11R-11-acetyl-3,7,7-trimethyl-10-oxatricyclo[6.4.0.01,3]dodecan-9-one

    Directory of Open Access Journals (Sweden)

    Abdoullah Bismoussa

    2015-12-01

    Full Text Available The title compound, C16H24O3, is built up from three fused rings, a six-membered, a seven-membered and a three-membered ring. The absolute configuration of the title compound was determined as (1R,3S,8R,11R based on the synthetic pathway. The six-membered ring has an half-chair conformation whereas the seven-membered ring displays a boat conformation. In the cyrstal, C—H...O hydrogen bonds build up a two-dimensional network parallel to (0 0 1. The crystal studied was an inversion twin with a minor twin component of 34%.

  11. Cosmology of Horava-Lifshitz f(R) gravity

    International Nuclear Information System (INIS)

    Chakrabarti, Sayan K.; Sen, Anjan A.

    2011-08-01

    We discuss the cosmology of recently proposed Horava-Lifshitz f(R) gravity. In particular, we derive the modified Hubble equation that reduces to the standard HL gravity case in appropriate limit. We show how the bounce solutions in this theory are modified due to nonlinear effect of f(R) gravity. In addition we find that the solutions exist when the Universe can make turn around for large scale-factor. Therefore, in principle, the Universe in this set-up can show cyclic behavior. (orig.)

  12. Cosmology of Horava-Lifshitz f(R) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Chakrabarti, Sayan K. [Univ. Tecnica de Lisboa (Portugal). Inst. Superior Tecnico; Dutta, Koushik [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Sen, Anjan A. [Centre of Theoretical Physics, Jamia Millia Islamia, New Dehli (India)

    2011-08-15

    We discuss the cosmology of recently proposed Horava-Lifshitz f(R) gravity. In particular, we derive the modified Hubble equation that reduces to the standard HL gravity case in appropriate limit. We show how the bounce solutions in this theory are modified due to nonlinear effect of f(R) gravity. In addition we find that the solutions exist when the Universe can make turn around for large scale-factor. Therefore, in principle, the Universe in this set-up can show cyclic behavior. (orig.)

  13. Recent developments in pipeline welding practice

    Energy Technology Data Exchange (ETDEWEB)

    1979-01-01

    Fourteen chapters are included: overview of pipeline welding systems and quality assurance, CRC automatic welding system, H.C. Price Co. automatic welding system, semi-automatic MIG-welding process, partial penetration welding of steel pipes for gas distribution, construction procedures and quality control in offshore pipeline construction, welding in repair and maintenance of gas transmission pipelines, British Gas studies of welding on pressurized gas transmission pipelines, hot tapping pipelines, underwater welding for offshore pipelines and associated equipment, radial friction welding, material composition vs weld properties, review of NDT of pipeline welds, and safety assurance in pipeline construction. A bibliography of approximately 150 references is included, arranged according to subject and year.

  14. Characterization of corrosive bacterial consortia isolated from petroleum-product-transporting pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Rajasekar, Aruliah; Ting, Yen-Peng [National Univ. of Singapore (Singapore). Dept. of Chemical and Biomolecular Engineering; Anandkumar, Balakrishnan [Sourashtra Coll., Madurai (India). Dept. of Biotechnology; Maruthamuthu, Sundaram [Central Electrochemical Research Inst., Karaikudi (India). Biocorrosion Group; Rahman, Pattanathu K.S.M. [Teesside Univ., Tees Valley (United Kingdom). Chemical and Bioprocess Engineering Group

    2010-01-15

    Microbiologically influenced corrosion is a problem commonly encountered in facilities in the oil and gas industries. The present study describes bacterial enumeration and identification in diesel and naphtha pipelines located in the northwest and southwest region in India, using traditional cultivation technique and 16S rDNA gene sequencing. Phylogenetic analysis of 16S rRNA sequences of the isolates was carried out, and the samples obtained from the diesel and naphtha-transporting pipelines showed the occurrence of 11 bacterial species namely Serratia marcescens ACE2, Bacillus subtilis AR12, Bacillus cereus ACE4, Pseudomonas aeruginosa AI1, Klebsiella oxytoca ACP, Pseudomonas stutzeri AP2, Bacillus litoralis AN1, Bacillus sp., Bacillus pumilus AR2, Bacillus carboniphilus AR3, and Bacillus megaterium AR4. Sulfate-reducing bacteria were not detected in samples from both pipelines. The dominant bacterial species identified in the petroleum pipeline samples were B. cereus and S. marcescens in the diesel and naphtha pipelines, respectively. Therefore, several types of bacteria may be involved in biocorrosion arising from natural biofilms that develop in industrial facilities. In addition, localized (pitting) corrosion of the pipeline steel in the presence of the consortia was observed by scanning electron microscopy analysis. The potential role of each species in biofilm formation and steel corrosion is discussed. (orig.)

  15. Galaxy-galaxy weak gravitational lensing in f(R) gravity

    Science.gov (United States)

    Li, Baojiu; Shirasaki, Masato

    2018-03-01

    We present an analysis of galaxy-galaxy weak gravitational lensing (GGL) in chameleon f(R) gravity - a leading candidate of non-standard gravity models. For the analysis, we have created mock galaxy catalogues based on dark matter haloes from two sets of numerical simulations, using a halo occupation distribution (HOD) prescription which allows a redshift dependence of galaxy number density. To make a fairer comparison between the f(R) and Λ cold dark matter (ΛCDM) models, their HOD parameters are tuned so that the galaxy two-point correlation functions in real space (and therefore the projected two-point correlation functions) match. While the f(R) model predicts an enhancement of the convergence power spectrum by up to ˜ 30 per cent compared to the standard ΛCDM model with the same parameters, the maximum enhancement of GGL is only half as large and less than 5 per cent on separations above ˜1-2 h-1 Mpc, because the latter is a cross-correlation of shear (or matter, which is more strongly affected by modified gravity) and galaxy (which is weakly affected given the good match between galaxy autocorrelations in the two models) fields. We also study the possibility of reconstructing the matter power spectrum by combination of GGL and galaxy clustering in f(R) gravity. We find that the galaxy-matter cross-correlation coefficient remains at unity down to ˜2-3 h-1 Mpc at relevant redshifts even in f(R) gravity, indicating joint analysis of GGL and galaxy clustering can be a powerful probe of matter density fluctuations in chameleon gravity. The scale dependence of the model differences in their predictions of GGL can potentially allows us to break the degeneracy between f(R) gravity and other cosmological parameters such as Ωm and σ8.

  16. Skaha Lake crossing, innovations in pipeline installation

    International Nuclear Information System (INIS)

    Fernandez, M.L.; Bryce, P.W.; Smith, J.D.

    1995-01-01

    This paper describes the construction of a 10.8 km long NPS16 (406 mm, 16 inch diameter) pipeline, across Skaha Lake, in the south Okanagan valley, British Columbia, Canada. The water crossing is part of the 32 km South Okanagan Natural Gas Pipeline Project (SONG) operated by BC Gas. The pipeline is located in a region dependent on year-round tourism. Therefore, the design and construction was influenced by sensitive environmental and land use concerns. From earlier studies, BC Gas identified surface tow or lay as preferred installation methods. The contractor, Fraser River Pile and Dredge departed from a conventional laybarge methodology after evaluating environmental data and assessing locally available equipment. The contractor proposed a surface tow with multiple surface tie-ins. This approach modification to the ''Surface Tow and Buoy Release Method'' (STBRM) used previously with success on relatively short underwater pipelines. A total of 10 pipe strings, up to 1 km long, were towed into position on the lake and tied-in using a floating platform. The joined pipeline was lowered to the lakebed by divers releasing buoys while tension was maintained from a winch barge at the free end of the pipeline. From analysis and field verified measurement the installation stresses were well below the allowable limits during all phases of construction. The entire construction, including mobilization and demobilization, lasted less than three months, and actual pipelaying less than three weeks. Installation was completed within budget and on schedule, without any environmental or safety related incidents. The SONG pipeline became operational in December 1994

  17. 77 FR 31725 - Safety Zone; Belle Pass Dredge Operations, Belle Pass, Mile Marker 1.0 to Mile Marker (−0.2...

    Science.gov (United States)

    2012-05-30

    ... Environmental Health Risks and Safety Risks. This rule is not an economically significant rule and does not create an environmental risk to health or risk to safety that may disproportionately affect children. 11...-AA00 Safety Zone; Belle Pass Dredge Operations, Belle Pass, Mile Marker 1.0 to Mile Marker (-0.2), Port...

  18. A study on a real-time leak detection method for pressurized liquid refrigerant pipeline based on pressure and flow rate

    International Nuclear Information System (INIS)

    Tian, Shen; Du, Juanli; Shao, Shuangquan; Xu, Hongbo; Tian, Changqing

    2016-01-01

    Highlights: • A real-time leak detection method is developed for ammonia pipeline in cold storage. • A locating algorithm based on pressure difference profile is provided. • This method is validated by R22 and ammonia leak experiments. • The minimum detectable leak ratio is 1% for R22 and 4% for ammonia. • The location estimating errors are −27% ~ 17% for R22 and −27% ~ 27% for ammonia. - Graphical Abstract: - Abstract: Leakage from pressurized liquid ammonia pipeline has been a serious problem in large commercial cold storages because it might release large amount of liquid ammonia and without safety supervision in daily operations. The present paper shows a detection method for a pressurized liquid ammonia pipeline with a leak. The variations of pressure, flow rate and pressure difference profile are studied. A leak indicator (σ), proposed with the one-dimensional steady-state flow model, is used to detect the leak occurrence by comparing it with a threshold value (σ Le ). A locating algorithm based on pressure difference profile along the pipeline is also proposed, which has considered the effect of the static pressure increase at the leak point. Experiments on different leak positions and ratios from liquid R22 and ammonia pipelines are carried out to validate this method. It is found that, with a relatively low false alarm rate (as three percent), the minimum detectable leak ratio reached 1% for the R22 pipeline and 4% for the ammonia pipeline. The locating errors are between −27% ~ 17% for R22 pipeline and −27% ~ 27% for ammonia pipeline.

  19. 49 CFR 800.25 - Delegation to the Directors of Office of Aviation Safety, Office of Railroad Safety, Office of...

    Science.gov (United States)

    2010-10-01

    ... Office of Aviation Safety, Office of Railroad Safety, Office of Highway Safety, Office of Marine Safety... Offices of Aviation, Railroad, Highway, Marine, and Pipeline and Hazardous Materials Safety, the authority... 49 Transportation 7 2010-10-01 2010-10-01 false Delegation to the Directors of Office of Aviation...

  20. Prise en charge de l'hematurie au chu Sylvanus Olympio de Lome ...

    African Journals Online (AJOL)

    Une transfusion sanguine avait été réalisée dans 64,8% des cas et nous avions enregistré 4 cas de décès. Conclusion : Les hématuries sont relativement fréquentes au Togo et souvent de causes tumorales. Elles nécessitent une prise en charge précoce pour un meilleur pronostic. Mots clés : hématurie, épidémiologie, ...

  1. Efficiency improvements in pipeline transportation systems

    Energy Technology Data Exchange (ETDEWEB)

    Banks, W. F.; Horton, J. F.

    1977-09-09

    This report identifies potential energy-conservative pipeline innovations that are most energy- and cost-effective and formulates recommendations for the R, D, and D programs needed to exploit those opportunities. From a candidate field of over twenty classes of efficiency improvements, eight systems are recommended for pursuit. Most of these possess two highly important attributes: large potential energy savings and broad applicability outside the pipeline industry. The R, D, and D program for each improvement and the recommended immediate next step are described. The eight technologies recommended for R, D, and D are gas-fired combined cycle compressor station; internally cooled internal combustion engine; methanol-coal slurry pipeline; methanol-coal slurry-fired and coal-fired engines; indirect-fired coal-burning combined-cycle pump station; fuel-cell pump station; drag-reducing additives in liquid pipelines; and internal coatings in pipelines.

  2. 75 FR 51036 - ANR Pipeline Company; Notice of Technical Conference

    Science.gov (United States)

    2010-08-18

    ... Company; Notice of Technical Conference August 11, 2010. By order dated July 30, 2010 \\1\\ the Federal... will be held on Wednesday, September 15, 2010 at the Commission's headquarters at 888 First Street, NE... July 30, 2010 order. \\1\\ ANR Pipeline Company, 132 FERC ] 61,090 (2010). FERC conferences are...

  3. The effect of novel [3-fluoro-(2-phosphonoethoxy)propyl]purines on the inhibition of Plasmodium falciparum, Plasmodium vivax and human hypoxanthine-guanine-(xanthine) phosphoribosyltransferases

    Czech Academy of Sciences Publication Activity Database

    Baszczyňski, Ondřej; Hocková, Dana; Janeba, Zlatko; Holý, Antonín; Jansa, Petr; Dračínský, Martin; Keough, D. T.; Guddat, L. W.

    2013-01-01

    Roč. 67, Sep (2013), s. 81-89 ISSN 0223-5234 R&D Projects: GA MV VG20102015046; GA ČR GAP207/11/0108 Grant - others:National Health and Madical Research Council(AU) 1030353; National Health and Medical Research Council(AU) 569703 Institutional support: RVO:61388963 Keywords : Malaria * nucleoside phosphonates * fluorine * purines * FPMP Subject RIV: FR - Pharmacology ; Medidal Chemistry Impact factor: 3.432, year: 2013

  4. Late-time cosmological approach in mimetic f(R, T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Baffou, E.H. [Institut de Mathematiques et de Sciences Physiques (IMSP), Porto-Novo (Benin); Houndjo, M.J.S. [Institut de Mathematiques et de Sciences Physiques (IMSP), Porto-Novo (Benin); Faculte des Sciences et Techniques de Natitingou, Natitingou (Benin); Hamani-Daouda, M. [Universite de Niamey, Departement de Physique, Niamey (Niger); Alvarenga, F.G. [Universidade Federal do Espirito Santo, Departamento de Engenharia e Ciencias Naturais, CEUNES, Sao Mateus, ES (Brazil)

    2017-10-15

    In this paper, we investigate the late-time cosmic acceleration in mimetic f(R, T) gravity with the Lagrange multiplier and potential in a Universe containing, besides radiation and dark energy, a self-interacting (collisional) matter. We obtain through the modified Friedmann equations the main equation that can describe the cosmological evolution. Then, with several models from Q(z) and the well-known particular model f(R, T), we perform an analysis of the late-time evolution. We examine the behavior of the Hubble parameter, the dark energy equation of state and the total effective equation of state and in each case we compare the resulting picture with the non-collisional matter (assumed as dust) and also with the collisional matter in mimetic f(R, T) gravity. The results obtained are in good agreement with the observational data and show that in the presence of the collisional matter the dark energy oscillations in mimetic f(R, T) gravity can be damped. (orig.)

  5. 10 CFR 76.87 - Technical safety requirements.

    Science.gov (United States)

    2010-01-01

    ...: (1) Effects of natural phenomena; (2) Building and process ventilation and offgas; (3) Criticality...; (8) Environmental protection; (9) Packaging and transporting nuclear materials; (10) Accident analysis; (11) Chemical safety; (12) Sharing of facilities, structures, systems and components; (13...

  6. Generation of spherically symmetric metrics in f(R) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Amirabi, Z.; Halilsoy, M.; Mazharimousavi, S.H. [Eastern Mediterranean University, Department of Physics, Gazimagusa (Turkey)

    2016-06-15

    In D-dimensional spherically symmetric f(R) gravity there are three unknown functions to be determined from the fourth order differential equations. It is shown that the system remarkably may be integrated to relate two functions through the third one to provide a reduction to second order equations accompanied with a large class of potential solutions. The third function, which acts as the generator of the process, is F(R) = (df(R))/(dR). We recall that our generating function has been employed as a scalar field with an accompanying self-interacting potential previously, which is entirely different from our approach. Reduction of f(R) theory into a system of equations seems to be efficient enough to generate a solution corresponding to each generating function. As particular examples, besides the known ones, we obtain new black hole solutions in any dimension D. We further extend our analysis to cover non-zero energy-momentum tensors. Global monopole and Maxwell sources are given as examples. (orig.)

  7. Rational approximations of f(R) cosmography through Pad'e polynomials

    Science.gov (United States)

    Capozziello, Salvatore; D'Agostino, Rocco; Luongo, Orlando

    2018-05-01

    We consider high-redshift f(R) cosmography adopting the technique of polynomial reconstruction. In lieu of considering Taylor treatments, which turn out to be non-predictive as soon as z>1, we take into account the Pad&apose rational approximations which consist in performing expansions converging at high redshift domains. Particularly, our strategy is to reconstruct f(z) functions first, assuming the Ricci scalar to be invertible with respect to the redshift z. Having the so-obtained f(z) functions, we invert them and we easily obtain the corresponding f(R) terms. We minimize error propagation, assuming no errors upon redshift data. The treatment we follow naturally leads to evaluating curvature pressure, density and equation of state, characterizing the universe evolution at redshift much higher than standard cosmographic approaches. We therefore match these outcomes with small redshift constraints got by framing the f(R) cosmology through Taylor series around 0zsimeq . This gives rise to a calibration procedure with small redshift that enables the definitions of polynomial approximations up to zsimeq 10. Last but not least, we show discrepancies with the standard cosmological model which go towards an extension of the ΛCDM paradigm, indicating an effective dark energy term evolving in time. We finally describe the evolution of our effective dark energy term by means of basic techniques of data mining.

  8. F(R Gravity’s Rainbow and Its Einstein Counterpart

    Directory of Open Access Journals (Sweden)

    S. H. Hendi

    2016-01-01

    Full Text Available Motivated by UV completion of general relativity with a modification of a geometry at high energy scale, it is expected to have an energy dependent geometry. In this paper, we introduce charged black hole solutions with power Maxwell invariant source in the context of gravity’s rainbow. In addition, we investigate two classes of F(R gravity’s rainbow solutions. At first, we study energy dependent F(R gravity without energy-momentum tensor, and then we obtain F(R gravity’s rainbow in the presence of conformally invariant Maxwell source. We study geometrical properties of the mentioned solutions and compare their results. We also give some related comments regarding thermodynamical behavior of the obtained solutions and discuss thermal stability of the solutions.

  9. Pipesworld : applying planning systems to pipeline transportation

    Energy Technology Data Exchange (ETDEWEB)

    Milidiu, R.L.; Santos Liporace, F. [Pontificia Univ. Catolica, Rio de Janeiro (Brazil). Dept. de Informatica

    2004-07-01

    This paper explored issues facing the complex task of managing pipelines that transport large volumes of petroleum products over long distances. Since oil pipelines are generally a few inches wide and several miles long, reasonable amounts of distinct products can be transported with very small loss due to the mixing at liquid boundaries. Optimizing the transportation through oil pipelines in terms of maintenance and environmental safety is a high priority for pipeline operators. This paper presented the Pipesworld model which takes into account features such as product interface constraints, limited product storage capacities and due dates for product delivery. It has been benchmarked as a start-of-art general purpose artificial planning system. This paper also reported the results derived by general purpose artificial intelligence planning systems when applied to the Pipesworld model. It demonstrated how various modelling techniques can be used to enhance the planners performance. Current work in developing Plumber was also presented. This dedicated solver that addresses operational situations uses both general purpose planning techniques as well as domain specific knowledge. When Plumber was incorporated into Pipesworld, its outperformed Fast-Forward, one of the best available general purpose planning systems, suggesting that improved versions of Plumber have the potential to deal with various problem scenarios in pipeline operations. 11 refs., 2 tabs., 3 figs.

  10. Exploring the liminality: properties of haloes and subhaloes in borderline f(R) gravity

    Science.gov (United States)

    Shi, Difu; Li, Baojiu; Han, Jiaxin; Gao, Liang; Hellwing, Wojciech A.

    2015-09-01

    We investigate the properties of dark matter haloes and subhaloes in an f(R) gravity model with |fR0| = 10-6, using a very-high-resolution N-body simulation. The model is a borderline between being cosmologically interesting and yet still consistent with current data. We find that the halo mass function in this model has a maximum 20 per cent enhancement compared with the Λ-cold-dark-matter (ΛCDM) predictions between z = 1 and 0. Because of the chameleon mechanism which screens the deviation from standard gravity in dense environments, haloes more massive than 1013 h-1 M⊙ in this f(R) model have very similar properties to haloes of similar mass in ΛCDM, while less massive haloes, such as that of the Milky Way, can have steeper inner density profiles and higher velocity dispersions due to their weaker screening. The halo concentration is remarkably enhanced for low-mass haloes in this model due to a deepening of the total gravitational potential. Contrary to the naive expectation, the halo formation time zf is later for low-mass haloes in this model, a consequence of these haloes growing faster than their counterparts in ΛCDM at late times and the definition of zf. Subhaloes, especially those less massive than 1011 h-1 M⊙, are substantially more abundant in this f(R) model for host haloes less massive than 1013 h-1 M⊙. We discuss the implications of these results for the Milky Way satellite abundance problem. Although the overall halo and subhalo properties in this borderline f(R) model are close to their ΛCDM predictions, our results suggest that studies of the Local Group and astrophysical systems, aided by high-resolution simulations, can be valuable for further tests of it.

  11. The holographic bound in the scalar-tensor and f(R) gravities

    International Nuclear Information System (INIS)

    Firouzjaee, J.T.

    2013-01-01

    The holographic bound has been extended to the different theory of gravities such as scalar-tensor gravity and f(R) gravity according to the Noether charge definition of the entropy for a black hole surface. We have introduced some popular examples of the flat FRW cosmology in order to investigate holographic bound in scalar-tensor and f(R) gravity. Using the holographic bound, we put an additional constraint on scalar-tensor gravity and the f(R) gravity parameters. We also discuss the transformation from Jordan frame to Einstein frame. (orig.)

  12. De nouveaux mécanismes de résilience : rapport interactif au sujet ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    13 nov. 2012 ... On y trouve de nombreux liens vers des ressources relatives au programme et aux projets, ainsi que des pistes pour explorer plus en profondeur les résultats des recherches scientifiques. Lire le rapport De nouveaux mécanismes de résilience (PDF, 2,98 Mo). Une version récente d'Adobe Reader est ...

  13. Statistical analyses of incidents on onshore gas transmission pipelines based on PHMSA database

    International Nuclear Information System (INIS)

    Lam, Chio; Zhou, Wenxing

    2016-01-01

    This article reports statistical analyses of the mileage and pipe-related incidents data corresponding to the onshore gas transmission pipelines in the US between 2002 and 2013 collected by the Pipeline Hazardous Material Safety Administration of the US Department of Transportation. The analysis indicates that there are approximately 480,000 km of gas transmission pipelines in the US, approximately 60% of them more than 45 years old as of 2013. Eighty percent of the pipelines are Class 1 pipelines, and about 20% of the pipelines are Classes 2 and 3 pipelines. It is found that the third-party excavation, external corrosion, material failure and internal corrosion are the four leading failure causes, responsible for more than 75% of the total incidents. The 12-year average rate of rupture equals 3.1 × 10"−"5 per km-year due to all failure causes combined. External corrosion is the leading cause for ruptures: the 12-year average rupture rate due to external corrosion equals 1.0 × 10"−"5 per km-year and is twice the rupture rate due to the third-party excavation or material failure. The study provides insights into the current state of gas transmission pipelines in the US and baseline failure statistics for the quantitative risk assessments of such pipelines. - Highlights: • Analyze PHMSA pipeline mileage and incident data between 2002 and 2013. • Focus on gas transmission pipelines. • Leading causes for pipeline failures are identified. • Provide baseline failure statistics for risk assessments of gas transmission pipelines.

  14. 78 FR 41829 - Pipeline Safety: Information Collection Activities, Revision to Annual Report for Hazardous...

    Science.gov (United States)

    2013-07-11

    ... following stakeholders: American Petroleum Institute (API) Association of Oil Pipelines (AOPL) This 30-day..., replacement of a weld or welding to fill in an anomaly, and removal of stress concentrators through grinding...

  15. Le developpement de Limacella glioderma (Fr.) R. Maire

    NARCIS (Netherlands)

    Reijnders, A.F.M.

    1979-01-01

    A comparison of the development of Limacella guttata (Fr.) Konrad & Maublanc with that of L. glioderma (Fr.) R. Maire shows clearly that the latter is of a more primitive type. This conclusion is based on the following observations: a. Limacella guttata has a pileocarpic development: the first

  16. 78 FR 17140 - Upholstered Furniture Fire Safety Technology; Meeting and Request for Comments

    Science.gov (United States)

    2013-03-20

    ... retardant (FR) chemicals, specialty fibers/fabrics without FR chemicals, inherently fire resistant materials... Furniture Fire Safety Technology; Meeting and Request for Comments AGENCY: Consumer Product Safety... Commission (CPSC, Commission, or we) is announcing its intent to hold a meeting on upholstered furniture fire...

  17. Reauthorizations for hazardous materials transportation and pipeline safety. Hearing before the Subcommittee on Surface Transportation of the Committee on Commerce, Science, and Transporation, US Senate, Ninety-Eighth Congress, Second Session, April 24, 1984

    International Nuclear Information System (INIS)

    Anon.

    1984-01-01

    Witnesses from pipeline and trucking companies and state and federal transportation agencies testified at a hearing on the reauthorization of the Hazardous Materials Transportation Act of 1974, the Natural Gas Pipeline Safety Act of 1968, and the Hazardous Liquid Pipeline Safety Act of 1979. Senator Specter spoke in favor of S. 2356, requiring a detailed environmental impact statement for the shipment of radioactive waste material through metropolitan areas. In addition to safety issues, witnesses spoke of tax inequities imposed on gas pipeline property, the need for more uniformity in safety requirements and emergency responses, and the quality of the safety record which the transport industry maintains. Additional articles, letters, and statements submitted for the record follow the testimony of 15 witnesses

  18. Le rôle des chefs traditionnels au Ghana : un modèle inspirant ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    8 févr. 2011 ... Avec ses partenaires du Sud, avec aussi le soutien du Centre de recherches pour le développement international ( CRDI ), organisme canadien, Ray a étudié le rôle des chefs traditionnels au Ghana dans la lutte contre le VIH et le sida. Les collectivités politiques antérieures au colonialisme sont une ...

  19. Au-delà du plan. La topologie urbaine des livreurs

    Directory of Open Access Journals (Sweden)

    Céline Cholez

    2011-03-01

    Full Text Available Nombreuses sont les activités professionnelles au sein desquelles s’orchestrent des « défis » classant les professionnels en fonction de leur degré d’expertise. Parmi les livreurs, une joute fréquente consiste à soumettre à un collègue un nom et un numéro de rue au hasard pour qu’il indique le plus rapidement possible le plus court chemin pour y parvenir. Ces jeux professionnels révèlent un aspect essentiel de l’engagement dans l’activité de travail : l’ancrage dans un espace approprié comme territoire, le secteur de tournée. Les livreurs maîtrisent en effet leurs tâches grâce à leur connaissance des zones géographiques qu’ils sillonnent quotidiennement.

  20. The R and D issues necessary to achieve the safety design of commercialized liquid-metal cooled fast reactors

    International Nuclear Information System (INIS)

    Shoji, Kotake; Koji, Dozaki; Shigenobu, Kubo; Yoshio, Shimakawa; Hajime, Niwa; Masakazu, Ichimiya

    2002-01-01

    Within the framework of the feasibility study on commercialized fast reactor cycle systems (hereafter described as F/S), the safety design principle is investigated and several kinds of design studies are now in progress. Among the designs for liquid-metal cooled fast reactor (LMR), the advanced loop type sodium cooled fast reactor (FR) is one of the promising candidate as future commercialized LMR. In this paper, the safety related research and development (R and D) issues necessary to achieve the safety design are described along the defence-in-depth principle, taking account of not only the system characteristics of the advanced loop concepts but also design studies and R and D experiences so far. Safety issues related to the hypothetical core disruptive accidents (CDA) are emphasized both from the prevention and mitigation. A re-criticality free core concept with a special fuel assembly is pursued by performing both analytical and experimental efforts, in order to realize the rational design and to establish easy-to-understand safety logic. Sodium related issues are also given to ensure plant availability and to enhance the acceptability to the public. (authors)

  1. 75 FR 33299 - Guardian Pipeline, L.L.C.; Notice of Revised Filing

    Science.gov (United States)

    2010-06-11

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. RP10-690-002] Guardian Pipeline, L.L.C.; Notice of Revised Filing June 4, 2010. Take notice that on May 14, 2010, Guardian Pipeline, L.L.C. submitted a revised filing to its filing made on May 14, 2010, in the above referenced...

  2. 49 CFR 177.810 - Vehicular tunnels.

    Science.gov (United States)

    2010-10-01

    ... through any urban vehicular tunnel used for mass transportation. [Amdt. 177-52, 46 FR 5316, Jan. 19, 1981... 49 Transportation 2 2010-10-01 2010-10-01 false Vehicular tunnels. 177.810 Section 177.810 Transportation Other Regulations Relating to Transportation PIPELINE AND HAZARDOUS MATERIALS SAFETY...

  3. Anomalous decrease of resistance at 250 K in ultrathin Au-Nb film on single-crystal silicon

    International Nuclear Information System (INIS)

    Yamamoto, H.; Kawashima, T.; Tanaka, M.

    1986-01-01

    Ultrathin Au-Nb films as thin as 0.2 about 10 nm were deposited on clean surfaces of single-crystal silicon in order to investigate interfacial excitonic superconductivity. The samples were classified into two types, Nb-Au/Si and Au-Nb-Au/Si. In the latter case, the secondary Au film was deposited on the former sample cooled by liquid nitrogen. In the Nb-Au/ Si type of sample, a sheet resistance, R /SUB s/ at room temperature abruptly increased from 10 3 Ωsq -1 order to about 10 5 Ωsq -1 in several days a few months after the sample preparation. Then the sample showed an anomalous decrease of R /SUB s/ at about 250 K and an approximately null resistance at lower temperatures. This phenomenon was not so stable and was observed only for a few days. The Au-Nb-Au/Si type of sample showed low R /SUB s/ (10 2 about 10 3 Ωsq -1 ) at room temperature. A decrease and disappearance of R /SUB s/ were also observed at about 240 K in the sample with comparatively good reproducibility. These phenomena are discussed qualitatively, based on the excitonic superconductive model for an interface of metal/semiconductor by Allender, Bray, and Bardeen

  4. Bi-functional Au/FeS (Au/Co{sub 3}O{sub 4}) composite for in situ SERS monitoring and degradation of organic pollutants

    Energy Technology Data Exchange (ETDEWEB)

    Ma, Shuzhen; Cai, Qian; Lu, Kailing; Liao, Fan, E-mail: fliao@suda.edu.cn; Shao, Mingwang, E-mail: mwshao@suda.edu.cn [Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University (China)

    2016-01-15

    The bi-functional Au/FeS (Au/Co{sub 3}O{sub 4}) composite was fabricated by in situ reducing Au nanoparticles onto the surface of FeS (Co{sub 3}O{sub 4}). The as-prepared FeS possessed a multi-structure composed of plenty of nanoplates, which were coated by Au nanoparticles with an average size of ∼47.5 nm. While the Co{sub 3}O{sub 4} showed a thin hexagonal sheet containing Au nanoparticles on its surface with an average size of ∼79.0 nm. Both the as-prepared Au/FeS and Au/Co{sub 3}O{sub 4} composites exhibited excellent SERS performance, capable of enhancing the Raman signals of R6G molecules with the enhancement factor up to 1.81 × 10{sup 6} and 7.60 × 10{sup 4}, respectively. Moreover, Au/FeS (Au/Co{sub 3}O{sub 4}) composite also has been verified to have intrinsic peroxidase-like activity, which could decompose H{sub 2}O{sub 2} into hydroxyl radicals and then degrade organic pollutants into small molecules. Therefore, SERS can be used to real-time and in situ monitoring the degradation process of R6G molecules, employing the Au/FeS (Au/Co{sub 3}O{sub 4}) composite both as SERS substrate and catalyst. Graphical abstract: SERS was used to real-time and in situ monitoring the degradation of R6G, employing the Au/FeS and Au/Co{sub 3}O{sub 4} composites both as SERS substrates and catalysts.

  5. Propagating Degrees of Freedom in f(R Gravity

    Directory of Open Access Journals (Sweden)

    Yun Soo Myung

    2016-01-01

    Full Text Available We have computed the number of polarization modes of gravitational waves propagating in the Minkowski background in f(R gravity. These are three of two from transverse-traceless tensor modes and one from a massive trace mode, which confirms the results found in the literature. There is no massless breathing mode and the massive trace mode corresponds to the Ricci scalar. A newly defined metric tensor in f(R gravity satisfies the transverse-traceless (TT condition as well as the TT wave equation.

  6. The coincidence problem in holographic f(R) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Bisabr, Yousef, E-mail: y-bisabr@srttu.edu [Department of Physics, Shahid Rajaee Teacher Training University, Lavizan, Tehran 16788 (Iran, Islamic Republic of)

    2011-09-15

    It is well known that f(R) gravity models formulated in the Einstein conformal frame are equivalent to Einstein gravity together with a minimally coupled scalar field. In this case, the scalar field couples with the matter sector and the coupling term is given by the conformal factor. We apply the holographic principle to such interacting models. In a spatially flat universe, we show that the Einstein frame representation of f(R) models leads to a constant ratio of energy densities of dark matter to dark energy.

  7. L'Asie du Sud peut-elle éliminer les obstacles au travail rémunéré ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    22 janv. 2018 ... Il est donc prioritaire d'élaborer et de mettre en place des politiques ... à la vie économique et qui reconnaissent et valorisent les soins non ... par semaine aux activités professionnelles et non professionnelles ... par le CRDI au Bangladesh a révélé qu'une combinaison de formation, ... Tous droits réservés.

  8. Distinguishing f(R) theories from general relativity by gravitational lensing effect

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Hongguang [Beijing Normal University, Department of Physics, Beijing (China); Aix Marseille Universite et Universite de Toulon, Centre de Physique Theorique (UMR 7332), Marseille (France); Wang, Xin; Li, Haida; Ma, Yongge [Beijing Normal University, Department of Physics, Beijing (China)

    2017-11-15

    The post-Newtonian formulation of a general class of f(R) theories is set up in a third-order approximation. It turns out that the information of a specific form of f(R) gravity is encoded in the Yukawa potential, which is contained in the perturbative expansion of the metric components. Although the Yukawa potential is canceled in the second-order expression of the effective refraction index of light, detailed analysis shows that the difference of the lensing effect between the f(R) gravity and general relativity does appear at the third order when √(f''(0)/f{sup '}(0)) is larger than the distance d{sub 0} to the gravitational source. However, the difference between these two kinds of theories will disappear in the axially symmetric spacetime region. Therefore only in very rare case the f(R) theories are distinguishable from general relativity by gravitational lensing effect in a third-order post-Newtonian approximation. (orig.)

  9. 49 CFR 192.505 - Strength test requirements for steel pipeline to operate at a hoop stress of 30 percent or more...

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Strength test requirements for steel pipeline to...: MINIMUM FEDERAL SAFETY STANDARDS Test Requirements § 192.505 Strength test requirements for steel pipeline... as provided in paragraph (e) of this section, the strength test must be conducted by maintaining the...

  10. General proof of the entropy principle for self-gravitating fluid in f(R) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Fang, Xiongjun [Department of Physics and Key Laboratory of Low Dimensional Quantum Structures andQuantum Control of Ministry of Education, Hunan Normal University,Changsha, Hunan 410081 (China); Guo, Minyong [Department of Physics, Beijing Normal University,Beijing 100875 (China); Jing, Jiliang [Department of Physics and Key Laboratory of Low Dimensional Quantum Structures andQuantum Control of Ministry of Education, Hunan Normal University,Changsha, Hunan 410081 (China)

    2016-08-29

    The discussions on the connection between gravity and thermodynamics attract much attention recently. We consider a static self-gravitating perfect fluid system in f(R) gravity, which is an important theory could explain the accelerated expansion of the universe. We first show that the Tolman-Oppenheimer-Volkoff equation of f(R) theories can be obtained by thermodynamical method in spherical symmetric spacetime. Then we prove that the maximum entropy principle is also valid for f(R) gravity in general static spacetimes beyond spherical symmetry. The result shows that if the constraint equation is satisfied and the temperature of fluid obeys Tolmans law, the extrema of total entropy implies other components of gravitational equations. Conversely, if f(R) gravitational equation hold, the total entropy of the fluid should be extremum. Our work suggests a general and solid connection between f(R) gravity and thermodynamics.

  11. 76 FR 62395 - Natural Gas Pipeline Company of America LLC; Notice of Application

    Science.gov (United States)

    2011-10-07

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. CP11-547-000] Natural Gas Pipeline Company of America LLC; Notice of Application Take notice that on September 20, 2011, Natural Gas..., filed in Docket Number CP11-547-000, pursuant to sections 7(b) and 7(c) of the Natural Gas Act (NGA), an...

  12. A comprehensive evaluation of the sl1p pipeline for 16S rRNA gene sequencing analysis.

    Science.gov (United States)

    Whelan, Fiona J; Surette, Michael G

    2017-08-14

    Advances in next-generation sequencing technologies have allowed for detailed, molecular-based studies of microbial communities such as the human gut, soil, and ocean waters. Sequencing of the 16S rRNA gene, specific to prokaryotes, using universal PCR primers has become a common approach to studying the composition of these microbiota. However, the bioinformatic processing of the resulting millions of DNA sequences can be challenging, and a standardized protocol would aid in reproducible analyses. The short-read library 16S rRNA gene sequencing pipeline (sl1p, pronounced "slip") was designed with the purpose of mitigating this lack of reproducibility by combining pre-existing tools into a computational pipeline. This pipeline automates the processing of raw 16S rRNA gene sequencing data to create human-readable tables, graphs, and figures to make the collected data more readily accessible. Data generated from mock communities were compared using eight OTU clustering algorithms, two taxon assignment approaches, and three 16S rRNA gene reference databases. While all of these algorithms and options are available to sl1p users, through testing with human-associated mock communities, AbundantOTU+, the RDP Classifier, and the Greengenes 2011 reference database were chosen as sl1p's defaults based on their ability to best represent the known input communities. sl1p promotes reproducible research by providing a comprehensive log file, and reduces the computational knowledge needed by the user to process next-generation sequencing data. sl1p is freely available at https://bitbucket.org/fwhelan/sl1p .

  13. Thermodynamic laws for generalized f(R) gravity with curvature-matter coupling

    International Nuclear Information System (INIS)

    Wu Yabo; Zhao Yueyue; Cai Ronggen; Lu Jianbo; Lu Junwang; Gao Xiaojing

    2012-01-01

    The first law and the generalized second law (GSL) of thermodynamics for the generalized f(R) gravity with curvature-matter coupling are studied in the spatially homogeneous, isotropic FRW universe. The research results show that the field equations of the generalized f(R) gravity with curvature-matter coupling can be cast to the form of the first law of thermodynamics with the so-called the entropy production terms dS ¯ and the GSL can be given by considering the FRW universe filled only with ordinary matter enclosed by the dynamical apparent horizon with the Hawking temperature. Furthermore, as a concrete example, by utilizing the GSL the constraints on the gravitational model with f 1 (R)=R+αR l and f 2 (R)=R m are also discussed. It is worth noting these results given by us are quite general and can degenerate to the ones in Einstein's general relativity and pure f(R) gravity with non-coupling and non-minimal coupling as special cases. Comparing with the case of Einstein's general relativity, the appearance of the entropy production term dS ¯ in the first law of thermodynamics demonstrates that the horizon thermodynamics is non-equilibrium one for generalized f(R) gravity with curvature-matter coupling, which is consistent with the arguments given in Akbar and Cai (2007) [13] and Eling et al. (2006) [18].

  14. The numerical evaluation of the minimal outlet area of the safety valve in the pipelines of cryogenic installations

    CERN Multimedia

    CERN. Geneva

    2016-01-01

    The flow of cold helium in pipes is a fundamental issue of any cryogenic installation. Pipelines for helium transportation can reach lengths of hundreds of meters. The proper selection of size for individual pipelines and safety valves is a crucial part in the consideration of costs for the entire installation and its safe operation. The size of the safety valve must be properly designed in order to avoid a dangerous pressure buildup during normal operation, as well as in the case of emergency. The most commonly occurring dangerous situation is an undesired heat flux in the helium as a result of a broken insulation. In this case, the heat flux can be very intense and the buildup of the pressure in the pipe can be very rapid. In the present work, numerical calculations were used to evaluate the buildup of pressure and temperature in the pipe, in the case of a sudden and intense heat flux. The main goal of the applied numerical procedure was to evaluate the proper sizes of the safety valves in order to avoid a...

  15. Constraining f(R gravity in solar system, cosmology and binary pulsar systems

    Directory of Open Access Journals (Sweden)

    Tan Liu

    2018-02-01

    Full Text Available The f(R gravity can be cast into the form of a scalar–tensor theory, and scalar degree of freedom can be suppressed in high-density regions by the chameleon mechanism. In this article, for the general f(R gravity, using a scalar–tensor representation with the chameleon mechanism, we calculate the parametrized post-Newtonian parameters γ and β, the effective gravitational constant Geff, and the effective cosmological constant Λeff. In addition, for the general f(R gravity, we also calculate the rate of orbital period decay of the binary system due to gravitational radiation. Then we apply these results to specific f(R models (Hu–Sawicki model, Tsujikawa model and Starobinsky model and derive the constraints on the model parameters by combining the observations in solar system, cosmological scales and the binary systems.

  16. Identified particle distributions in pp and Au+Au collisions at root s(NN)=200 GeV

    Czech Academy of Sciences Publication Activity Database

    Adams, J.; Adler, C.; Aggarwal, M. M.; Chaloupka, Petr; Filip, Pavel; Lednický, Richard; Šumbera, Michal; Zborovský, Imrich

    2004-01-01

    Roč. 92, č. 11 (2004), s. 112301 ISSN 0031-9007 R&D Projects: GA MŠk ME 475 Institutional research plan: CEZ:AV0Z1048901 Keywords : proton-antiproton collisions * plus Au reactions * excitation-function Subject RIV: BF - Elementary Particles and High Energy Physics Impact factor: 7.218, year: 2004

  17. Stress analysis and mitigation measures for floating pipeline

    Science.gov (United States)

    Wenpeng, Guo; Yuqing, Liu; Chao, Li

    2017-03-01

    Pipeline-floating is a kind of accident with contingency and uncertainty associated to natural gas pipeline occurring during rainy season, which is significantly harmful to the safety of pipeline. Treatment measures against pipeline floating accident are summarized in this paper on the basis of practical project cases. Stress states of pipeline upon floating are analyzed by means of Finite Element Calculation method. The effectiveness of prevention ways and subsequent mitigation measures upon pipeline-floating are verified for giving guidance to the mitigation of such accidents.

  18. A no-hair theorem for black holes in f(R) gravity

    Science.gov (United States)

    Cañate, Pedro

    2018-01-01

    In this work we present a no-hair theorem which discards the existence of four-dimensional asymptotically flat, static and spherically symmetric or stationary axisymmetric, non-trivial black holes in the frame of f(R) gravity under metric formalism. Here we show that our no-hair theorem also can discard asymptotic de Sitter stationary and axisymmetric non-trivial black holes. The novelty is that this no-hair theorem is built without resorting to known mapping between f(R) gravity and scalar–tensor theory. Thus, an advantage will be that our no-hair theorem applies as well to metric f(R) models that cannot be mapped to scalar–tensor theory.

  19. Au nanoparticles attached carbon nanotubes as a high performance active element in field effect transistor

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Myeongsoon; Kim, Don, E-mail: donkim@pknu.ac.kr

    2016-08-15

    The Au nanoparticles attached carbon nanotubes (Au-CNTs), diameter ranged from 40 to 250 nm, were prepared and discussed their chemical and electrical properties. The shape and crystallinity of the carbon nanotubes (CNTs) phase depended main2ly on the diameter of CNTs (r{sub Au-CNT}). Highly crystalline, straight CNTs were observed when the r{sub Au-CNT} exceeded 80 nm, and less crystalline noodle-shaped CNTs were observed when the r{sub Au-CNT} was smaller than 80 nm. The crystallinity of the CNT phase was confirmed by analyzing the G and D bands in their Raman spectra and the electrical conductivities of the Au-CNTs. The electrical conductivity of the highly crystalline carbon phase of Au-CNTs (r{sub Au-CNT} = 250 nm) was ∼10{sup 4} S/cm. The back-gated field effect transistors (FETs) based on the Au-CNTs, which were assembled on a SiO{sub 2}/Si wafer using the dielectrophoresis technique, showed that the Au-CNTs would be a good functional electronic material for future electronic and sensing applications. The transconductance and hole mobility of the FETs, which were assembled with the highly crystalline Au-CNTs (r{sub Au-CNT} = 250 nm), reached to 3.6 × 10{sup −4} A/V and 3.1 × 10{sup 4} cm{sup 2}/V s, respectively. These values are in the middle of those of reported for single walled carbon nanotubes and graphene. However, we could not find any field effect in a CNTFET, which assembled without Au nanoparticles, through the same process. - Highlights: • The shape and crystallinity of the CNTs depended mainly on the diameter of CNTs. • The electrical conductivity of the highly crystalline Au-CNTs was ∼10{sup 4} S/cm. • The Au-CNT FET shows typical p-channel gate effect with the on/off ratio of ∼10{sup 4}. • The Au-CNT FET shows very high transconductance (g{sub m}) and carrier mobility (μ{sub h}).

  20. Extension of loop quantum gravity to f(R) theories.

    Science.gov (United States)

    Zhang, Xiangdong; Ma, Yongge

    2011-04-29

    The four-dimensional metric f(R) theories of gravity are cast into connection-dynamical formalism with real su(2) connections as configuration variables. Through this formalism, the classical metric f(R) theories are quantized by extending the loop quantization scheme of general relativity. Our results imply that the nonperturbative quantization procedure of loop quantum gravity is valid not only for general relativity but also for a rather general class of four-dimensional metric theories of gravity.

  1. Ajout d’équivalents des groupes alimentaires au Questionnaire canadien de fréquence alimentaire II pour estimer l’Indice canadien de saine alimentation-2005

    Directory of Open Access Journals (Sweden)

    Maria McInerney

    2018-01-01

    Full Text Available Introduction : Il a été prouvé qu’un régime alimentaire de piètre qualité augmente le risque de maladies chroniques courantes susceptibles de nuire à la qualité de vie et d'alourdir le fardeau qui pèse sur le système de santé. Les recommandations fondées sur des données probantes du Guide alimentaire canadien (GAC fournissent des conseils nutritionnels destinés à améliorer la qualité du régime alimentaire. L’Indice canadien de saine alimentation (ICSA, un outil de mesure de la qualité du régime alimentaire, permet d'évaluer la conformité au GAC. Le Questionnaire canadien de fréquence alimentaire II (QFA-C II [Canadian Diet History Questionnaire II, C-DHQ II], mis au point récemment, pourrait quant à lui servir à estimer l’ICSA au sein de la population canadienne si on pouvait ajouter à sa base de données sur les éléments nutritifs les équivalents des groupes alimentaires (correspondant aux portions du GAC. Nous décrivons dans cet article des méthodes destinées à enrichir cette base de données sur les éléments nutritifs du QFA-C II en vue d’estimer l’ICSA. Méthodologie : Nous avons créé des équivalents des groupes alimentaires à partir de données provenant de diverses bases de données sur les aliments et les éléments nutritifs, en particulier l’Enquête sur la santé dans les collectivités canadiennes, cycle 2.2 Nutrition de 2004. Nous avons ajouté ces variables à la base de données sur les éléments nutritifs du QFA-C II. Nous avons déterminé les scores de l’ICSA et avons effectué des analyses descriptives pour les participants qui ont répondu au QFA-C II dans le cadre d’une étude transversale canadienne. Résultats : Le score moyen de l’ICSA dans notre échantillon de 446 adultes de 20 à 83 ans était de 64,4 (écart-type : 10,8. Les femmes, les non-fumeurs et les personnes ayant un niveau de scolarité supérieur au secondaire ont obtenu de manière statistiquement

  2. 76 FR 61676 - Privacy Act of 1974; Systems of Records

    Science.gov (United States)

    2011-10-05

    ...' Health and Counseling Programs; E.O. 12564, Drug Free Federal Workplace; E.O. 12196, Occupational safety.... System manager(s) and address: Chief, Employee Assistance Services, National Security Agency/ Central.... For additional information, contact the system manager. [FR Doc. 2011-25697 Filed 10-4-11; 8:45 am...

  3. Constraint on reconstructed f(R) gravity models from gravitational waves

    Science.gov (United States)

    Lee, Seokcheon

    2018-06-01

    The gravitational wave (GW) detection of a binary neutron star inspiral made by the Advanced LIGO and Advanced Virgo paves the unprecedented way for multi-messenger observations. The propagation speed of this GW can be scrutinized by comparing the arrival times between GW and neutrinos or photons. It provides the constraint on the mass of the graviton. f(R) gravity theories have the habitual non-zero mass gravitons in addition to usual massless ones. Previously, we show that the model independent f(R) gravity theories can be constructed from the both background evolution and the matter growth with one undetermined parameter. We show that this parameter can be constrained from the graviton mass bound obtained from GW detection. Thus, the GW detection provides the invaluable constraint on the validity of f(R) gravity theories.

  4. 49 CFR 192.917 - How does an operator identify potential threats to pipeline integrity and use the threat...

    Science.gov (United States)

    2010-10-01

    ... Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Gas Transmission Pipeline Integrity Management § 192...

  5. 49 CFR 192.937 - What is a continual process of evaluation and assessment to maintain a pipeline's integrity?

    Science.gov (United States)

    2010-10-01

    ... Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Gas Transmission Pipeline Integrity Management § 192.937 What is a...

  6. Cosmic constraint on massive neutrinos in viable f(R) gravity with producing ΛCDM background expansion

    Energy Technology Data Exchange (ETDEWEB)

    Lu, Jianbo; Wu, Yabo; Wang, Yan; Yang, Weiqiang [Liaoning Normal University, Department of Physics, Dalian (China); Liu, Molin [Xinyang Normal University, Department of Physics, Xinyang (China)

    2016-12-15

    Tensions between several cosmic observations were found recently, such as the inconsistent values of H{sub 0} (or σ{sub 8}) were indicated by the different cosmic observations. Introducing the massive neutrinos in ΛCDM could potentially solve the tensions. Viable f(R) gravity producing ΛCDM background expansion with massive neutrinos is investigated in this paper. We fit the current observational data: Planck-2015 CMB, RSD, BAO, and SNIa to constrain the mass of neutrinos in viable f(R) theory. The constraint results at 95% confidence level are: Σm{sub ν} < 0.202 eV for the active-neutrino case, m{sub ν,sterile}{sup eff} < 0.757 eV with N{sub eff} < 3.22 for the sterile neutrino case. For the effects due to the mass of the neutrinos, the constraint results on model parameter at 95% confidence level become f{sub R0} x 10{sup -6} > -1.89 and f{sub R0} x 10{sup -6} > -2.02 for two cases, respectively. It is also shown that the fitting values of several parameters much depend on the neutrino properties, such as the cold dark matter density, the cosmological quantities at matter-radiation equality, the neutrino density and the fraction of baryonic mass in helium. Finally, the constraint result shows that the tension between direct and CMB measurements of H{sub 0} gets slightly weaker in the viable f(R) model than that in the base ΛCDM model. (orig.)

  7. 77 FR 64972 - Tennessee Gas Pipeline Company, L.L.C.; Notice of Application

    Science.gov (United States)

    2012-10-24

    ... Pipeline Company, L.L.C.; Notice of Application Take notice that on October 10, 2012, Tennessee Gas Pipeline Company, L.L.C. (Tennessee), 1001 Louisiana Street, Houston, Texas 77002, filed in the above captioned docket an application pursuant to sections 7(b) and 7(c) of the Natural Gas Act (NGA) for a...

  8. Père au foyer : une nouvelle entrée au répertoire du masculin ?

    OpenAIRE

    Chatot, Myriam

    2017-01-01

    Cadre de la recherche : En dépit de la promotion dans les représentations d’un partage égalitaire des tâches domestiques et des responsabilités parentales entre conjoints, les femmes sont encore largement responsables de la prise en charge des enfants et des tâches ménagères ; l’entrée d’un homme dans la situation de « père au foyer » représente une inversion des rôles traditionnels.Objectifs : L’objectif de cet article est de comprendre comment se recomposent les rôles de genre traditionnels...

  9. Probing the f(R) formalism through gravitational wave polarizations

    International Nuclear Information System (INIS)

    Alves, M.E.S.; Miranda, O.D.; Araujo, J.C.N. de

    2009-01-01

    The direct observation of gravitational waves (GW) in the near future, and the corresponding determination of the number of independent polarizations, is a powerful tool to test general relativity and alternative theories of gravity. In the present work we use the Newman-Penrose formalism to characterize GWs in quadratic gravity and in a particular class of f(R) Lagrangians. We find that both quadratic gravity and the f(R) theory belong to the most general invariant class of GWs, i.e., they can present up to six independent polarizations of GWs. For a particular combination of the parameters, we find that quadratic gravity can present up to five polarizations states. On the other hand, if we use the Palatini approach for f(R) theories, GWs present only the usual two transverse-traceless polarizations such as in general relativity. Thus, we conclude that the observation of GWs can strongly constrain the suitable formalism for these theories.

  10. On Analytical Solutions of f(R) Modified Gravity Theories in FLRW Cosmologies

    Science.gov (United States)

    Domazet, Silvije; Radovanović, Voja; Simonović, Marko; Štefančić, Hrvoje

    2013-02-01

    A novel analytical method for f(R) modified theories without matter in Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetimes is introduced. The equation of motion for the scale factor in terms of cosmic time is reduced to the equation for the evolution of the Ricci scalar R with the Hubble parameter H. The solution of equation of motion for actions of the form of power law in Ricci scalar R is presented with a detailed elaboration of the action quadratic in R. The reverse use of the introduced method is exemplified in finding functional forms f(R), which leads to specified scale factor functions. The analytical solutions are corroborated by numerical calculations with excellent agreement. Possible further applications to the phases of inflationary expansion and late-time acceleration as well as f(R) theories with radiation are outlined.

  11. Mapping urban pipeline leaks: Methane leaks across Boston

    International Nuclear Information System (INIS)

    Phillips, Nathan G.; Ackley, Robert; Crosson, Eric R.; Down, Adrian; Hutyra, Lucy R.; Brondfield, Max; Karr, Jonathan D.; Zhao Kaiguang; Jackson, Robert B.

    2013-01-01

    Natural gas is the largest source of anthropogenic emissions of methane (CH 4 ) in the United States. To assess pipeline emissions across a major city, we mapped CH 4 leaks across all 785 road miles in the city of Boston using a cavity-ring-down mobile CH 4 analyzer. We identified 3356 CH 4 leaks with concentrations exceeding up to 15 times the global background level. Separately, we measured δ 13 CH 4 isotopic signatures from a subset of these leaks. The δ 13 CH 4 signatures (mean = −42.8‰ ± 1.3‰ s.e.; n = 32) strongly indicate a fossil fuel source rather than a biogenic source for most of the leaks; natural gas sampled across the city had average δ 13 CH 4 values of −36.8‰ (±0.7‰ s.e., n = 10), whereas CH 4 collected from landfill sites, wetlands, and sewer systems had δ 13 CH 4 signatures ∼20‰ lighter (μ = −57.8‰, ±1.6‰ s.e., n = 8). Repairing leaky natural gas distribution systems will reduce greenhouse gas emissions, increase consumer health and safety, and save money. Highlights: ► We mapped 3356 methane leaks in Boston. ► Methane leaks in Boston carry an isotopic signature of pipeline natural gas. ► Replacing failing gas pipelines will provide safety, environmental, and economic benefits. - We identified 3356 methane leaks in Boston, with isotopic characteristics consistent with pipeline natural gas.

  12. f(R in Holographic and Agegraphic Dark Energy Models and the Generalized Uncertainty Principle

    Directory of Open Access Journals (Sweden)

    Barun Majumder

    2013-01-01

    Full Text Available We studied a unified approach with the holographic, new agegraphic, and f(R dark energy model to construct the form of f(R which in general is responsible for the curvature driven explanation of the very early inflation along with presently observed late time acceleration. We considered the generalized uncertainty principle in our approach which incorporated the corrections in the entropy-area relation and thereby modified the energy densities for the cosmological dark energy models considered. We found that holographic and new agegraphic f(R gravity models can behave like phantom or quintessence models in the spatially flat FRW universe. We also found a distinct term in the form of f(R which goes as R 3 / 2 due to the consideration of the GUP modified energy densities. Although the presence of this term in the action can be important in explaining the early inflationary scenario, Capozziello et al. recently showed that f(R ~ R 3 / 2 leads to an accelerated expansion, that is, a negative value for the deceleration parameter q which fits well with SNeIa and WMAP data.

  13. Integrated diagnostics of northern gas pipelines; Diagnostic integre des gazoducs septentrionaux

    Energy Technology Data Exchange (ETDEWEB)

    Volsky, E.; Dedikov, E.; Ananenkov, A.; Salchov, Z.; Yakupov, Z. [Joint-Stock Company, Gazprom (Russian Federation)

    2000-07-01

    The main part of gas joint - stock company 'Gazprom' extracts from the northern deposits, which are situated in the permafrost zone. Ensuring of gas transporting pipeline's safety operation is a very complex and priority problem. On the basis of usage of this complex of methods the problem to ensure the safety operation is solved systematically: gas-mine - plant IV - derivation pipelines (condensate pipeline Yamburg Novy Urengoy, gas pipeline IV - GCS with negative temperature of transported products) taking into account 'co-ordination' dynamics of changes in pipeline GTS and technological modes of equipment operation. All researches was executed on the high professional level. (authors)

  14. Multi-Criteria Decision Making Models for Water Pipelines

    OpenAIRE

    El Chanati, Hisham; El-Abbasy, Mohammed S.; Mosleh, Fadi; Senouci, Ahmed; Abouhamad, Mona; Gkountis, Iason; Zayed, Tarek; Al-Derham, Hassan

    2016-01-01

    The deterioration of water pipelines leads to impaired water quality, increased breakage rate, and reduced hydraulic capacity. The planning of maintenance programs for water pipelines is essential to minimize health and safety concerns and ensure an adequate supply of water in a safe, cost-effective, reliable, and sustainable manner. It is essential to assess the performance of water pipelines to assist municipalities in planning inspection and rehabilitation programs for their pipelines. Sev...

  15. Reconstructing an f(R) model from holographic dark energy: using the observational evidence

    International Nuclear Information System (INIS)

    Saaidi, Kh; Aghamohammadi, A

    2012-01-01

    We investigate the correspondence relation between f(R) gravity and an interacting holographic dark energy (HDE). By obtaining the conditions needed for some observational evidence such as positive acceleration expansion of the Universe, crossing the phantom divide line and validity of the thermodynamics second law in an interacting HDE model and corresponding it with the f(R) model of gravity, we find a viable f(R) model that can explain the present Universe. We also obtain the explicit evolutionary forms of the corresponding scalar field, potential and scale factor of the Universe. (paper)

  16. String duality transformations in f(R) gravity from Noether symmetry approach

    Energy Technology Data Exchange (ETDEWEB)

    Capozziello, Salvatore [Dipartimento di Fisica, Università di Napoli ' ' Federico II' ' , Compl. Univ. di Monte S. Angelo, Edificio G, Via Cinthia, I-80126, Napoli (Italy); Gionti, Gabriele S.J. [Specola Vaticana, Vatican City, V-00120, Vatican City State (Vatican City State, Holy See); Vernieri, Daniele, E-mail: capozziello@na.inf.it, E-mail: ggionti@as.arizona.edu, E-mail: vernieri@iap.fr [Sorbonne Universités, UPMC Univ Paris 6 et CNRS, UMR 7095, Institut d' Astrophysique de Paris, GReCO, 98bis Bd Arago, 75014 Paris (France)

    2016-01-01

    We select f(R) gravity models that undergo scale factor duality transformations. As a starting point, we consider the tree-level effective gravitational action of bosonic String Theory coupled with the dilaton field. This theory inherits the Busher's duality of its parent String Theory. Using conformal transformations of the metric tensor, it is possible to map the tree-level dilaton-graviton string effective action into f(R) gravity, relating the dilaton field to the Ricci scalar curvature. Furthermore, the duality can be framed under the standard of Noether symmetries and exact cosmological solutions are derived. Using suitable changes of variables, the string-based f(R) Lagrangians are shown in cases where the duality transformation becomes a parity inversion.

  17. String duality transformations in f(R) gravity from Noether symmetry approach

    International Nuclear Information System (INIS)

    Capozziello, Salvatore; Gionti, Gabriele S.J.; Vernieri, Daniele

    2016-01-01

    We select f(R) gravity models that undergo scale factor duality transformations. As a starting point, we consider the tree-level effective gravitational action of bosonic String Theory coupled with the dilaton field. This theory inherits the Busher's duality of its parent String Theory. Using conformal transformations of the metric tensor, it is possible to map the tree-level dilaton-graviton string effective action into f(R) gravity, relating the dilaton field to the Ricci scalar curvature. Furthermore, the duality can be framed under the standard of Noether symmetries and exact cosmological solutions are derived. Using suitable changes of variables, the string-based f(R) Lagrangians are shown in cases where the duality transformation becomes a parity inversion

  18. Risque de réémergence du paludisme au Maroc Étude de la capacité vectorielle d’Anopheles labranchiae dans une zone rizicole au nord du pays

    Directory of Open Access Journals (Sweden)

    Faraj C.

    2008-12-01

    Full Text Available Dans le but d’estimer le risque de réintroduction du paludisme au Maroc, nous avons analysé le potentiel paludogène d’une zone rizicole au nord du pays. Nos résultats ont montré que la capacité vectorielle d’An. labranchiae, vecteur du paludisme au Maroc, était particulièrement élevée pendant la période estivale qui correspond à la période de culture du riz. Le risque d’une reprise de la transmission du paludisme autochtone est élevé du fait de l’éventuelle présence de porteurs de parasite dans le dernier foyer de paludisme limitrophe de la zone d’étude. Le risque d’une introduction du paludisme tropical est faible, vu la faible vulnérabilité de la région et la compétence de ses vecteurs, considérée comme faible. Toutefois, ce risque doit faire l’objet d’une grande attention.

  19. 76 FR 38018 - Safety Zone, Newport River; Morehead City, NC

    Science.gov (United States)

    2011-06-29

    ...-AA00 Safety Zone, Newport River; Morehead City, NC AGENCY: Coast Guard, DHS. ACTION: Temporary final... the main span US 70/Morehead City-Newport River high rise bridge in Carteret County, NC. This safety...) entitled Safety Zone, Newport River; Morehead City, North Carolina in the Federal Register (33 FR 165). We...

  20. Unifying inflation with dark energy in modified F(R) Horava-Lifshitz gravity

    International Nuclear Information System (INIS)

    Elizalde, E.; Saez-Gomez, D.; Nojiri, S.; Odintsov, S.D.

    2010-01-01

    We study FRW cosmology for a non-linear modified F(R) Horava-Lifshitz gravity which has a viable convenient counterpart. A unified description of early-time inflation and late-time acceleration is possible in this theory, but the cosmological dynamic details are generically different from the ones of the convenient viable F(R) model. Remarkably, for some specific choice of parameters they do coincide. The emergence of finite-time future singularities is investigated in detail. It is shown that these singularities can be cured by adding an extra, higher-derivative term, which turns out to be qualitatively different when compared with the corresponding one of the convenient F(R) theory. (orig.)

  1. Facteurs de risque de mortalité chez les nouveaux-nés transférés au service de néonatologie de l'Hôpital Jason Sendwe de Lubumbashi, République Démocratique du Congo

    Science.gov (United States)

    Katamea, Tina; Mukuku, Olivier; Kamona, Lewis; Mukelenge, Kethye; Mbula, Otikeke; Baledi, Lambert; Ntambwe, Emile; Mutombo, Augustin Mulangu; Wembonyama, Stanis Okitotsho; Luboya, Oscar Numbi

    2014-01-01

    Introduction La mortalité néonatale reste préoccupante dans notre milieu et plusieurs facteurs dont ceux liés à l'organisation du transfert de nouveau-nés au niveau des structures de prise en charge y contribuent. Les objectifs de notre étude sont de déterminer la fréquence du transfert néonatal extrahospitalier à l'unité de néonatologie et identifier les facteurs de risque de mortalité dans notre milieu. Méthodes Il s'agit d'une étude prospective et analytique menée sur une période de douze mois allant du 1er Janvier 2012 au 31 décembre 2012 ayant ciblé tous les nouveau-nés transférés des maternités extérieurs, traités et suivis dans le service de néonatologie de l'hôpital Sendwe. Les caractéristiques maternelles (âge, parité, état-civil, profession, niveau d’étude, antécédents médicaux et toxicologiques) et perpartales (âge gestationnel, état de la poche des eaux, voie d'accouchement) et néonataux (âge lors du transfert, sexe, poids de naissance, moyen de transfert, motif de transfert et évolution (guérison ou décès)) ont été étudiés. La saisie et l'analyse des données ont été faites sur le logiciel Epi Info 2011 (version 7.0.8.3) et le seuil de signification de 5%. Résultats La fréquence du transfert néonatal extrahospitalier est de 12,9%. La mortalité était significativement liée à la profession (vendeuse ou travailleuse) de la mère (OR = 7,43 (1,38-39,97)), au niveau d’étude élevé (OR = 4,22 (1,18-15,10)), à l’âge gestationnel sexe masculin du nouveau-né (OR=2,43 (1,08-5,46)), au poids de naissance <1500 grammes (OR=15,3 (5,73-40,78)) et à la prématurité comme motif de transfert (OR=5,56 (1,47-20,98)). Conclusion Le bilan de la mortalité néonatale est lourd dans les pays en développement où les nouveau-nés continuent de mourir pour des causes souvent évitables. La réduction de la morbidité et la mortalité néonatales passe par une amélioration du système de référence des

  2. A system and approach for total pipeline integrity management

    Energy Technology Data Exchange (ETDEWEB)

    Porter, Todd; Neidhardt, Dietmar [Tuboscope Pipeline Services, Houston, TX (United States); Gonzalez, Oscar [Tuboscope Mexico S.A. de C.V., Mexico, D.F. (Mexico)

    2005-07-01

    Pipeline rehabilitation and maintenance decisions are made using a wide variety of data, criteria, and expertise. The goal is to arrive at an optimal plan that considers risk and best return on Repair and Maintenance (R and M) expenditures for aging pipeline systems in both regulated and non-regulated environments. In order to achieve these goals, historical, operations, and assessment data is gathered, aligned and integrated as part of a baseline assessment. Integrity threats are identified based on operations and industry experience, and combined with potential consequences to public safety, the environment, and business to clearly delineate high risk exposure segments in the system. Integrity assessments are conducted in a prioritized manner, using the most appropriate technology and methods to address the threats. These include In Line Inspection technologies: MFL, Deformation, UT, INS (combinations thereof), Direct Assessment for EC and SCC threats, Hydro testing, and other indirect methods. From these results, decisions are made and R and M plans developed. To arrive at an optimal R and M plan, proper use of existing data, new integrity assessment data, and decision risk models is required. This paper presentation will detail the tactical aspect of an effective integrity management platform. Experience in decision support, operations priorities and execution of a rehabilitation plan using LinaView Pro{sup TM} integrity management system with risk-based integrity tools and maintenance planning will be presented. A process overview, results, and benefits will be given using these examples from operating oil and gas transmission pipelines. (author)

  3. Cardiopathies congénitales: aspects épidémiologiques et échocardiographies à propos de 109 cas au centre hospitalier universitaire pédiatrique Charles de Gaulle (CHUP-CDG) de Ouagadougou, Burkina Faso

    Science.gov (United States)

    Kinda, Georges; Millogo, Georges Rosario Christian; Koueta, Fla; Dao, Lassina; Talbousouma, Sollimy; Cissé, Hassane; Djiguimdé, Aristide; Yé, Diarra; Sorgho, Claudine Lougue

    2015-01-01

    Notre travail avait pour objectif d’étudier les aspects épidémiologiques et écho-cardiographiques des cardiopathies congénitales au CHUP-CDG afin d'y faire l’état des lieux. Pour se faire, nous avons mené sur une période de 27 mois d'aout 2009 à mai 2010 et d'octobre 2011 à décembre 2011, une étude rétrospective des comptes rendus d’échocardiographies Doppler des patients admis dans le service d'imagerie médicale. Nous avons utilisé une sonde cardiaque de 5MHz sur appareil Aloka Prosound 4000 Plus. Durant la période d’étude, 380 examens écho-cardiographiques ont été réalisés et ont permis de mettre en évidence 109 cas de cardiopathies congénitales avec 138 entités nosologiques différentes. Les cardiopathies congénitales représentaient 0,98% des 11169 entrées. Les souffles étaient au premier rang des motifs de demande de l’échographie Doppler cardiaque (121 cas sur 380) soit 39,53%. Les CIV étaient au premier plan des cardiopathies congénitales (28,26%), suivies des CIA (23,19%), des sténoses pulmonaires (19,57%), des Tétralogie de Fallot (9,42%). Dans leur forme isolée, les CIA étaient les plus fréquentes avec 21,95% des cas, suivies des CIV avec 20,73%. Sur 138 cas de cardiopathies congénitales (chez 109 enfants), 53 cas ont été observés chez des enfants de sexe féminin et 56 cas chez des enfants de sexe masculin soit un sexe ration de 1,1. La tranche d’âge présentant une fréquence élevée de cardiopathie congénitale est celle de 1mois- 30 mois avec 55% des cas. Les cardiopathies congénitales de l'enfant sont une réalité en Afrique, leurs fréquences dans toutes les séries rapportées sont certainement sous estimées en raison de l'inaccessibilité de l’échocardiographie doppler. PMID:26090039

  4. Late time acceleration of the universe in f(R) gravity model

    International Nuclear Information System (INIS)

    Mukherjee, Ankan

    2014-01-01

    In this work, a new way to look at the nature of late time dynamics of the universe for f(R) gravity models using the contracted Bianchi Identity has been proposed. As the Einstein field equations contain derivatives of the curvature scalar R, the contracted Bianchi identity yields a second order nonlinear differential equation in H, the Hubble parameter. This equation is studied for two particular forms of f(R), and the late time behaviour of the model is discussed. (author)

  5. Synthesis and positron emission tomographic (PET) baboon studies of [{sup 11}C]methadone and R-(-)-[{sup 11}C]methandone

    Energy Technology Data Exchange (ETDEWEB)

    Ding, Y.S.; Fowler, J.S.; Volkow, N.D. [Brookhaven National Lab., Upton, NY (United States)] [and others

    1996-05-01

    Methadone (MET) maintenance has been used successfully for many years in the rehabilitation of heroin addicts. MET, a typical m{mu}-opioid receptor agonist, exists as two enantiomers and is used clinically as the racemic mixture. However, R-(-)-MET has a 10-fold higher affinity for m{mu} receptors than S-(+)-MET (IC{sub 50}: 3.0 nM and 26.4 nM, respectively) and R-(-)-MET is almost entirely responsible for the therapeutic actions of the racemate. In order to examine the pharmacokinetics and stereoselectivity of the drug, we have synthesized both [{sup 11}C]MET and R-(-)-[{sup 11}C]MET. Preparing the precursor by one-step approach to the N-demethylated methadone was precluded as other investigators cited problems with intramolecular cyclization. Therefore, a four-step synthesis using MET (or R-(-)-MET) as starting material was required to obtain the precursor, followed by a two-step radiolabeling synthesis (N-methylation followed by oxidation) to obtain [{sup 11}C]MET (or R-(-)-[{sup 11}C]MET). Comparative PET studies in the same baboon showed peak striatal uptake was 0.022%/cc at 5 minutes with a half time of clearance from peak of 100 minutes for R-(-)-[{sup 11}C]MET and a peak uptake of 0.013%/cc with a half time of 90 min for [{sup 11}C]MET. R-(-)-[{sup 11}C]MET also showed a slower disappearance in plasma. Both tracers showed higher C-11 in basal ganglia (BG), thalamus and midbrain relative to the cerebellum (CB) and occipital cortex (OC) but the BG/OC ratio was higher for R-(-)-[{sup 11}C]MET (1.3 vs 1.1). Pretreatment with naloxone (1 mg/kg, iv) increased R-(-)-[{sup 11}C]MET uptake in all brain regions whereas unlabeled MET slightly increased C-11 clearance in BG, OC and CB. These initial results show higher brain concentration and specificity of the pharmacologically active enantiomer of methadone along with significant non-specific binding.

  6. Stability of the Einstein static universe in f(R, T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Shabani, Hamid [University of Sistan and Baluchestan, Physics Department, Faculty of Sciences, Zahedan (Iran, Islamic Republic of); Ziaie, Amir Hadi [Kahnooj Branch, Islamic Azad University, Department of Physics, Kerman (Iran, Islamic Republic of)

    2017-01-15

    The Einstein static (ES) universe has played a major role in various emergent scenarios recently proposed in order to cure the problem of the initial singularity of the standard model of cosmology. In the model we address, we study the existence and stability of an ES universe in the context of f(R, T) modified theories of gravity. Considering specific forms of the f(R, T) function, we seek for the existence of solutions representing ES state. Using dynamical system techniques along with numerical analysis, we find two classes of solutions: the first one is always unstable of the saddle type, while the second is always stable so that its dynamical behavior corresponds to a center equilibrium point. The importance of the second class of solutions is due to the significant role they play in constructing non-singular emergent models in which the universe could have experienced past-eternally a series of infinite oscillations about such an initial static state after which it enters, through a suitable physical mechanism, to an inflationary era. Considering specific forms for the functionality of f(R, T), we show that this theory is capable of providing cosmological solutions which admit emergent universe (EU) scenarios. We also investigate homogeneous scalar perturbations for the mentioned models. The stability regions of the solutions are parametrized by a linear equation of state (EoS) parameter and other free parameters that will be introduced for the models. Our results suggest that modifications in f(R, T) gravity would lead to stable solutions which are unstable in f(R) gravity model. (orig.)

  7. Stability of the Einstein static universe in f(R, T) gravity

    International Nuclear Information System (INIS)

    Shabani, Hamid; Ziaie, Amir Hadi

    2017-01-01

    The Einstein static (ES) universe has played a major role in various emergent scenarios recently proposed in order to cure the problem of the initial singularity of the standard model of cosmology. In the model we address, we study the existence and stability of an ES universe in the context of f(R, T) modified theories of gravity. Considering specific forms of the f(R, T) function, we seek for the existence of solutions representing ES state. Using dynamical system techniques along with numerical analysis, we find two classes of solutions: the first one is always unstable of the saddle type, while the second is always stable so that its dynamical behavior corresponds to a center equilibrium point. The importance of the second class of solutions is due to the significant role they play in constructing non-singular emergent models in which the universe could have experienced past-eternally a series of infinite oscillations about such an initial static state after which it enters, through a suitable physical mechanism, to an inflationary era. Considering specific forms for the functionality of f(R, T), we show that this theory is capable of providing cosmological solutions which admit emergent universe (EU) scenarios. We also investigate homogeneous scalar perturbations for the mentioned models. The stability regions of the solutions are parametrized by a linear equation of state (EoS) parameter and other free parameters that will be introduced for the models. Our results suggest that modifications in f(R, T) gravity would lead to stable solutions which are unstable in f(R) gravity model. (orig.)

  8. Cholestéatome de l'oreille moyenne - étude rétrospective à propos de 145 cas

    Science.gov (United States)

    Bouaity, Brahim; Chihani, Mehdi; Nadour, Karim; Moujahid, Mountassir; Touati, Mliha; Darouassi, Youssef; Ammar, Haddou

    2014-01-01

    L'otite moyenne chronique cholestéatomateuse représente une entité fréquente et dangereuse en chirurgie otologique, mettant en jeu le pronostic fonctionnel auditif et exposant à des complications redoutables justifiant pleinement le recours exclusif à un traitement chirurgical et à un suivi post-opératoire rigoureux. Dans le but de mettre le point sur les caractéristiques épidémiologiques, cliniques, thérapeutiques et évolutives de cette pathologie, nous avons mené une étude rétrospective, étalée sur 11 ans et portant sur 145 cas de cholestéatome de l'oreille moyenne opérés au sein du service d'oto-rhino-laryngologie et chirurgie cervico-faciale de l'hôpital militaire Avicenne de Marrakech. PMID:25120876

  9. Exact solutions for scalar field cosmology in f(R) gravity

    Science.gov (United States)

    Maharaj, S. D.; Goswami, R.; Chervon, S. V.; Nikolaev, A. V.

    2017-09-01

    We study scalar field FLRW cosmology in the content of f(R) gravity. Our consideration is restricted to the spatially flat Friedmann universe. We derived the general evolution equations of the model, and showed that the scalar field equation is automatically satisfied for any form of the f(R) function. We also derived representations for kinetic and potential energies, as well as for the acceleration in terms of the Hubble parameter and the form of the f(R) function. Next we found the exact cosmological solutions in modified gravity without specifying the f(R) function. With negligible acceleration of the scalar curvature, we found that the de Sitter inflationary solution is always attained. Also we obtained new solutions with special restrictions on the integration constants. These solutions contain oscillating, accelerating, decelerating and even contracting universes. For further investigation, we selected special cases which can be applied with early or late inflation. We also found exact solutions for the general case for the model with negligible acceleration of the scalar curvature in terms of special Airy functions. Using initial conditions which represent the universe at the present epoch, we determined the constants of integration. This allows for the comparison of the scale factor in the new solutions with that for current stage of the universe evolution in the ΛCDM model.

  10. Innovative sub sea pipeline maintenance in line with emerging offshore trends and maintenance safety standards

    Energy Technology Data Exchange (ETDEWEB)

    Lim, George [T.D. Williamson, Inc., Tulsa, OK (United States)

    2012-07-01

    Sub sea hot tapping of pipelines is performed for a variety of reasons, including tie-ins, pipeline repair, insertion of instrumentation, facilitating chemical injection or providing access for temporary isolation tools. The full hot tap process - that is, installing the hot tap assembly, performing the tap and recovering the hot tap machine - is normally conducted with diver assistance. After bolting the assembly of the machine, isolation valve and fitting to the pipeline (or machine and isolation valve to a pre-installed flanged membrane on the pipeline), the divers then operate the machine to perform the tap, under instructions from - and supervision by - hot tap technicians located on deck of the diving support vessel (DSV). Subsequent unbolting and removal of the hot tap machine is also carried out by the divers. The demands of deep water have necessitated development of a totally diver-less, remote-controlled system. Diver operations are limited to a maximum of 300 meters of water depth, whereas a significant portion of existing sub sea field infrastructure, as well as projected future developments, are in deeper waters in depths up to 3,000 meters. In addition, diver safety concerns in shallow water, as well as impaired diver efficiency in difficult environmental conditions such as wave breaking zones, prompts the call for a reduction of diver exposure or complete elimination of diver assistance. The recent completion of a remote-controlled hot tap machine (the Sub sea 1200RC Tapping Machine) is a first step toward developing a totally diver-less system. The installation of the hot tap assembly and subsequent removal of the machine still require diver assistance, but the performance of the tap itself is remotely controlled by a hot tap technician from the deck of the DSV. The concept is a topside-driven hot tap machine with 'passive Remote Operating Vehicle (ROV) interface', which means a stationary ROV with its hydraulics and control system

  11. Chameleon halo modeling in f(R) gravity

    International Nuclear Information System (INIS)

    Li Yin; Hu, Wayne

    2011-01-01

    We model the chameleon effect on cosmological statistics for the modified gravity f(R) model of cosmic acceleration. The chameleon effect, required to make the model compatible with local tests of gravity, reduces force enhancement as a function of the depth of the gravitational potential wells of collapsed structure and so is readily incorporated into a halo model by including parameters for the chameleon mass threshold and rapidity of transition. We show that the abundance of halos around the chameleon mass threshold is enhanced by both the merging from below and the lack of merging to larger masses. This property also controls the power spectrum in the nonlinear regime and we provide a description of the transition to the linear regime that is valid for a wide range of f(R) models.

  12. Au nanoparticles attached carbon nanotubes as a high performance active element in field effect transistor

    International Nuclear Information System (INIS)

    Lee, Myeongsoon; Kim, Don

    2016-01-01

    The Au nanoparticles attached carbon nanotubes (Au-CNTs), diameter ranged from 40 to 250 nm, were prepared and discussed their chemical and electrical properties. The shape and crystallinity of the carbon nanotubes (CNTs) phase depended main2ly on the diameter of CNTs (r_A_u_-_C_N_T). Highly crystalline, straight CNTs were observed when the r_A_u_-_C_N_T exceeded 80 nm, and less crystalline noodle-shaped CNTs were observed when the r_A_u_-_C_N_T was smaller than 80 nm. The crystallinity of the CNT phase was confirmed by analyzing the G and D bands in their Raman spectra and the electrical conductivities of the Au-CNTs. The electrical conductivity of the highly crystalline carbon phase of Au-CNTs (r_A_u_-_C_N_T = 250 nm) was ∼10"4 S/cm. The back-gated field effect transistors (FETs) based on the Au-CNTs, which were assembled on a SiO_2/Si wafer using the dielectrophoresis technique, showed that the Au-CNTs would be a good functional electronic material for future electronic and sensing applications. The transconductance and hole mobility of the FETs, which were assembled with the highly crystalline Au-CNTs (r_A_u_-_C_N_T = 250 nm), reached to 3.6 × 10"−"4 A/V and 3.1 × 10"4 cm"2/V s, respectively. These values are in the middle of those of reported for single walled carbon nanotubes and graphene. However, we could not find any field effect in a CNTFET, which assembled without Au nanoparticles, through the same process. - Highlights: • The shape and crystallinity of the CNTs depended mainly on the diameter of CNTs. • The electrical conductivity of the highly crystalline Au-CNTs was ∼10"4 S/cm. • The Au-CNT FET shows typical p-channel gate effect with the on/off ratio of ∼10"4. • The Au-CNT FET shows very high transconductance (g_m) and carrier mobility (μ_h).

  13. Thermal expansion absorbing structure for pipeline

    International Nuclear Information System (INIS)

    Nagata, Takashi; Yamashita, Takuya.

    1995-01-01

    A thermal expansion absorbing structure for a pipeline is disposed to the end of pipelines to form a U-shaped cross section connecting a semi-circular torus shell and a short double-walled cylindrical tube. The U-shaped longitudinal cross-section is deformed in accordance with the shrinking deformation of the pipeline and absorbs thermal expansion. Namely, since the central lines of the outer and inner tubes of the double-walled cylindrical tube deform so as to incline, when the pipeline is deformed by thermal expansion, thermal expansion can be absorbed by a simple configuration thereby enabling to contribute to ensure the safety. Then, the entire length of the pipeline can greatly be shortened by applying it to the pipeline disposed in a high temperature state compared with a method of laying around a pipeline using only elbows, which has been conducted so far. Especially, when it is applied to a pipeline for an FBR-type reactor, the cost for the construction of a facility of a primary systems can greater be reduced. In addition, it can be applied to a pipeline for usual chemical plants and any other structures requiring absorption of deformation. (N.H.)

  14. Semiconducting La2AuP3, the metallic conductor Ce2AuP3, and other rare-earth gold phosphides Ln2AuP3 with two closely related crystal structures

    International Nuclear Information System (INIS)

    Eschen, M.; Kotzyba, G.; Kuennen, B.; Jeitschko, W.

    2001-01-01

    The compounds Ln 2 AuP 3 were synthesized by reaction of the elemental components in evacuated silica tubes. Their crystal structures were determined from single-crystal diffractometer data. The compounds with Ln = La, Ce, and Pr crystallize with an orthorhombic U 2 NiC 3 type structure (Pnma, Z = 4). The structure refinement for Ce 2 AuP 3 resulted in a = 774.14(6) pm, b = 421.11(4) pm, c = 1612.3(1) pm, R = 0.019 for 1410 structure factors and 38 variable parameters. For Pr 2 AuP 3 a residual of R = 0.024 was obtained. Nd 2 AuP 3 crystallizes with a monoclinic distortion of this structure: P2 1 /c, Z = 4, a = 416.14(4) pm, b = 768.87(6) pm, c = 1647.1(2) pm, β = 104.06(1) , R = 0.022 for 1361 F values and 56 variables. The near-neighbor coordinations of the two structures are nearly the same. In both structures the gold and phosphorus atoms form two-dimensionally infinite nets, where the gold atoms are tetrahedrally coordinated by phosphorus atoms with Au-P distances varying between 245.8 and 284.2 pm. Two thirds of the phosphorus atoms form pairs with single-bond distances varying between 217.7 and 218.9 pm. Thus, using oxidation numbers the structures can be rationalized with the formulas (Ln +3 ) 2 [AuP 3 ] -6 and (Ln +3 ) 2 Au +1 (P 2 ) -4 P -3 . Accordingly, La 2 AuP 3 is a diamagnetic semiconductor. Pr 2 AuP 3 is semi-conducting with an antiferromagnetic ground state, showing metamagnetism with a critical field of B c = 0.5(±0.1) T. In contrast, the cerium compound is a metallic conductor, even though its cell volume indicates that the cerium atoms are essentially trivalent, as is also suggested by the ferro- or ferrimagnetic behavior of the compound. (orig.)

  15. Pipeline integrity evaluation of oil pipelines using free-swimming acoustic technology

    Energy Technology Data Exchange (ETDEWEB)

    Ariaratnam, Samuel T. [Arizona State University, Tempe, Arizona (United States); Chandrasekaran, Muthu [Pure Technologies Limited, Calgary, AB (Canada)

    2010-07-01

    In the United States, the Pipeline and Hazardous Materials Safety Administration (PHMSA) funded a joint academy-industry research project, which developed and refined a free-swimming tool called SmartBall. The tool swims through the pipeline and gives results at a much lower cost than current leak detection methods, and it can detect leaks as small as 0.03 gpm of oil. GPS-synchronized above-ground loggers capture acoustic signals and record the passage of the tool through the pipeline. The tool is spherical and smaller than the pipe, through which it rolls silently; it can overcome obstacles that could otherwise make a pipeline unpiggable. SmartBall uses the great potential of acoustic detection, because when a pressurized product leaks from a pipe, it produces a distinctive acoustic signal that travels through the product; at the same time, it overcomes the problem caused by the very limited range of this signal. This technology can prevent enormous economic consequences such as a 50,000-gallon gasoline spill that happened in 2003 between Tucson and Phoenix.

  16. Europe's gas imports via pipelines. Projects and safety aspects; Europas Gasimporte durch Pipelines. Projekte und Sicherheitsaspekte

    Energy Technology Data Exchange (ETDEWEB)

    Goetz, R.

    2008-08-15

    By the year 2030 Europe's gas imports will have risen to approximately 200 bn m{sup 3}, necessitating the installation of new pipelines and LNG terminals. The largest growth in imports is not expected from Russia but from Africa and the Near East. An analysis of projected pipelines demonstrates these regions' contribution to securing Europe's gas supply. Because they help to establish market dominance or to fend off potential competitors these pipelines also serve corporate strategies. The most reliable supply will continue to come from Norway. By contrast, gas imports via pipelines from North Africa, Russia and the Persian Gulf all carry high risks of approximately the same degree. The greatest risks are associated with gas imports from the Caspian Sea.

  17. Absolute measurement of the cross sections of neutron radiative capture for 23Na, Cr, 55Mn, Fe, Ni, 103Rh, Ta, 197Au and 238U in the 10-600keV energy range

    International Nuclear Information System (INIS)

    Le Rigoleur, Claude; Arnaud, Andre; Taste, Jean.

    1976-10-01

    The total energy weighting technique has been applied to measuring absolute neutron capture cross sections for 23 Na, Cr, 55 Mn, Fe, Ni, 103 Rh, Ta, 197 Au, 238 U in the 10-600keV energy range. A non hydrogeneous liquid scintillator was used to detect the gamma from the cascade. The neutron flux was measured with a 10 B INa(Tl) detector or a 6 Li glass scintillator of well known efficiency. The fast time-of-flight technique was used with on line digital computer data processing [fr

  18. Thick brane in f(R) gravity with Palatini dynamics

    Energy Technology Data Exchange (ETDEWEB)

    Bazeia, D.; Losano, L. [Universidade Federal da Paraiba, Departamento de Fisica, Joao Pessoa, PB (Brazil); Menezes, R. [Universidade Federal da Paraiba, Departamento de Ciencias Exatas, Rio Tinto, PB (Brazil); Universidade Federal de Campina Grande, Departamento de Fisica, Campina Grande, PB (Brazil); Olmo, Gonzalo J. [Universidade Federal da Paraiba, Departamento de Fisica, Joao Pessoa, PB (Brazil); Universidad de Valencia, Departamento de Fisica Teorica, IFIC, Centro Mixto Universidad de Valencia-CSIC, Burjassot, Valencia (Spain); Rubiera-Garcia, D. [Universidade Federal da Paraiba, Departamento de Fisica, Joao Pessoa, PB (Brazil); Universidade de Lisboa, Faculdade de Ciencias, Instituto de Astrofisica e Ciencias do Espaco, Lisbon (Portugal); Fudan University, Department of Physics, Center for Field Theory and Particle Physics, Shanghai (China)

    2015-12-15

    This work deals with modified gravity in five-dimensional space-time. We study a thick Palatini f(R) brane, that is, a braneworld scenario described by an anti-de Sitter warped geometry with a single extra dimension of infinite extent, sourced by a real scalar field under the Palatini approach, where the metric and the connection are regarded as independent degrees of freedom. We consider a first-order framework which we use to provide exact solutions for the scalar field and warp factor. We also investigate a perturbative scenario such that the Palatini approach is implemented through a Lagrangian f(R) = R + εR{sup n}, where the small parameter ε controls the deviation from the standard thick brane case. In both cases it is found that the warp factor tends to localize the extra dimension due to the nonlinear corrections. (orig.)

  19. Aspects epidemiologiques et cliniques des pemphigus au Senegal [Epidemiological and clinical aspects of pemphigus in Senegal

    Directory of Open Access Journals (Sweden)

    Moussa Diallo

    2017-11-01

    Full Text Available Background: The purpose of this study was to specify the epidemiological and clinical characteristics of pemphigus in the Department of Dermatology of the University Hospital of Dakar. Patients and Methodology: All medical records of patients seen for pemphigus in our department over a 11-year period were analyzed retrospectively. Results: We collected 105 cases of pemphigus, corresponding to a frequency of 10 cases/year and a hospital prevalence of 2.7%. Thus, pemphigus held the second rank of blistering autoimmune bullous diseases after bullous pemphigoid. The mean age of patients was 47.62 years and the age group [40-59 years] was predominantly affected (28 cases; 45 %. There were 41 femeles and 21 men (F/M ratio: 2. We did not find an endemic focus in our country. Clinical forms were dominated by pemphigus foliaceus (30 cases; 48.5 %, followed by pemphigus vulguaris (19 cases; 30.6 % and finally by pemphigus erythematosus (13 cases; 21%. In 16 cases (25 %, the pemphigus had begun after the consumption of a traditional medicinal plant (8 cases. An associated toxidermia was found in12 cases. Pruritus was present in 43 patients (69.35%. Discussion: In Senegal, pemphigus are common diseases, but without however an endemic focuc. They occur in young women, with a predominance of superficial forms, especially pemphigus foliaceus. The presence of pruritus and associated toxidermia to traditional medicinal plants are common. RÉSUMÉ Introduction: L’objectif de cette étude était de préciser les aspects épidémiologiques et cliniques des pemphigus au CHU de Dakar. Patients et Méthodes: Tous les dossiers des malades admis pour pemphigus ont été analysé de façon rétrospective sur une période de 11 ans. Résultats: Nous avons colligé 105 cas de pemphigus, correspondant à une fréquence de 10 cas/an et une prévalence hospitalière de 2,7 %. Les pemphigus occupaient le 2° rang des dermatoses bulleuses auto-immunes après la pemphigoide

  20. 75 FR 3471 - International Conference on Harmonisation; Guidance on M3(R2) Nonclinical Safety Studies for the...

    Science.gov (United States)

    2010-01-21

    ...] International Conference on Harmonisation; Guidance on M3(R2) Nonclinical Safety Studies for the Conduct of... the availability of a guidance entitled ``M3(R2) Nonclinical Safety Studies for the Conduct of Human... auspices of the International Conference on Harmonisation of Technical Requirements for Registration of...

  1. Physical attributes of anisotropic compact stars in f(R, G) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Shamir, M.F.; Zia, Saeeda [National University of Computer and Emerging Sciences, Department of Sciences and Humanities, Lahore (Pakistan)

    2017-07-15

    Modified gravity is one of the potential candidates to explain the accelerated expansion of the universe. Current study highlights the materialization of anisotropic compact stars in the context of f(R, G) theory of gravity. In particular, to gain insight in the physical behavior of three stars namely, Her X1, SAX J 1808-3658 and 4U 1820-30, energy density, and radial and tangential pressures are calculated. The f(R, G) gravity model is split into a Starobinsky like f(R) model and a power law f(G) model. The main feature of the work is a 3-dimensional graphical analysis in which, anisotropic measurements, energy conditions and stability attributes of these stars are discussed. It is shown that all three stars behave as usual for positive values of the f(G) model parameter n. (orig.)

  2. Development of ecologically safe method for main oil and gas pipeline trenching

    Directory of Open Access Journals (Sweden)

    Akhmedov Asvar Mikdadovich

    2014-05-01

    Full Text Available Constructive, technical and technological reliability of major pipeline ensures ecological safety on different stages of life circle - beginning with project preparation activities up to the end of major pipeline operation. Even in the process of transition into new life circle stage, no matter if the pipeline needs major repairs or reconstruction, such technical and technological solutions should be found, which would preserve ecological stability of nature-anthropogenic system. Development of ecology protection technologies of construction, reconstruction and major repairs of main pipelines is of great importance not only for a region, but ensures ecological safety across the globe. The article presents a new way of trenching the main oil and gas pipeline, preservation and increase of ecological safety during its service. The updated technological plan is given in the paper for overhaul of the main oil and gas pipeline using the new technology of pipeline trenching. The suggested technical solution contributes to environment preservation with the help of deteriorating shells - the shells’ material decomposes into environment-friendly components: carbon dioxide, water and humus. The quantity of polluting agents in the atmosphere decreases with the decrease of construction term and quantity of technical equipment.

  3. Arctic pipeline planning design, construction, and equipment

    CERN Document Server

    Singh, Ramesh

    2013-01-01

    Utilize the most recent developments to combat challenges such as ice mechanics. The perfect companion for engineers wishing to learn state-of-the-art methods or further develop their knowledge of best practice techniques, Arctic Pipeline Planning provides a working knowledge of the technology and techniques for laying pipelines in the coldest regions of the world. Arctic Pipeline Planning provides must-have elements that can be utilized through all phases of arctic pipeline planning and construction. This includes information on how to: Solve challenges in designing arctic pipelines Protect pipelines from everyday threats such as ice gouging and permafrost Maintain safety and communication for construction workers while supporting typical codes and standards Covers such issues as land survey, trenching or above ground, environmental impact of construction Provides on-site problem-solving techniques utilized through all phases of arctic pipeline planning and construction Is packed with easy-to-read and under...

  4. Identification d’une nouvelle molécule d’intérêt chez le cheval atteint d’obstruction récurrente des voies respiratoires: La Pentraxine 3

    OpenAIRE

    Ramery, Eve

    2010-01-01

    L’ORVR ou obstruction récurrente des voies respiratoires (ORVR) est la cause la plus fréquente de maladie pulmonaire chronique chez le cheval adulte. La maladie se caractérise par une hyperréactivité bronchique, une production excessive de mucus et une inflammation neutrophilique pulmonaire qui ont pour effet de réduire la compliance dynamique du poumon et d’augmenter la résistance des voies respiratoires au débit aérien. Alors que la maladie est une entité documentée dans la littérature depu...

  5. Enhanced fullerene–Au(111 coupling in (2√3 × 2√3R30° superstructures with intermolecular interactions

    Directory of Open Access Journals (Sweden)

    Michael Paßens

    2015-06-01

    Full Text Available Disordered and uniform (2√3 × 2√3R30° superstructures of fullerenes on the Au(111 surface have been studied using scanning tunneling microscopy and spectroscopy. It is shown that the deposition and growth process of a fullerene monolayer on the Au(111 surface determine the resulting superstructure. The supply of thermal energy is of importance for the activation of a Au vacancy forming process and thus, one criterion for the selection of the respective superstructure. However, here it is depicted that a vacancy–adatom pair can be formed even at room temperature. This latter process results in C60 molecules that appear slightly more bright in scanning tunnelling microscopy images and are identified in disordered (2√3 x 2√3R30° superstructures based on a detailed structure analysis. In addition, these slightly more bright C60 molecules form uniform (2√3 x 2√3R30° superstructures, which exhibit intermolecular interactions, likely mediated by Au adatoms. Thus, vacancy–adatom pairs forming at room temperature directly affect the resulting C60 superstructure. Differential conductivity spectra reveal a lifting of the degeneracy of the LUMO and LUMO+1 orbitals in the uniform (2√3 x 2√3R30° superstructure and in addition, hybrid fullerene–Au(111 surface states suggest partly covalent interactions.

  6. An Atomically Precise Au10 Ag2 Nanocluster with Red-Near-IR Dual Emission.

    Science.gov (United States)

    Lei, Zhen; Guan, Zong-Jie; Pei, Xiao-Li; Yuan, Shang-Fu; Wan, Xian-Kai; Zhang, Jin-Yuan; Wang, Quan-Ming

    2016-08-01

    A red-near-IR dual-emissive nanocluster with the composition [Au10 Ag2 (2-py-C≡C)3 (dppy)6 ](BF4 )5 (1; 2-py-C≡C is 2-pyridylethynyl, dppy=2-pyridyldiphenylphosphine) has been synthesized. Single-crystal X-ray structural analysis reveals that 1 has a trigonal bipyramidal Au10 Ag2 core that contains a planar Au4 (2-py-C≡C)3 unit sandwiched by two Au3 Ag(dppy)3 motifs. Cluster 1 shows intense red-NIR dual emission in solution. The visible emission originates from metal-to-ligand charge transfer (MLCT) from silver atoms to phosphine ligands in the Au3 Ag(dppy)3 motifs, and the intense NIR emission is associated with the participation of 2-pyridylethynyl in the frontier orbitals of the cluster, which is confirmed by a time-dependent density functional theory (TD-DFT) calculation. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  7. Study of the excited levels of 11C and 12C by the analysis of protons induced reactions

    International Nuclear Information System (INIS)

    Rihet, Y.

    1984-07-01

    The present work is a study of 11 and 12 C excited states by reactions of non polarised protons on 10 B and 11 B. R-matrix analysis of the 10 B excitation curves in the range E p = 0 to 8 MeV was used to establish parameters of 41 levels in 11 C. Isobaric multiplets of T = 1/2 and T = 3/2 states in A = 11 nuclei are deduced. Analysis of 11 B excitation curves in the E p = 0.5 to 7.4 MeV range led to parameter values of 60 levels in 12 C. T = 1 states in A = 12 isobaric nuclei are discussed [fr

  8. A 10-bit 80-MS/s opamp-sharing pipelined ADC with a switch-embedded dual-input MDAC

    Energy Technology Data Exchange (ETDEWEB)

    Yin Rui; Zhang Wei; Tang Zhangwen [ASIC and System State Key Laboratory, Fudan University, Shanghai 201203 (China); Liao Youchun, E-mail: zwtang@fudan.edu.cn [Ratio Microelectronics Co., Ltd, Shanghai 200433 (China)

    2011-02-15

    A 10-bit 80-MS/s opamp-sharing pipelined ADC is implemented in a 0.18-{mu}m CMOS. An opamp-sharing MDAC with a switch-embedded dual-input opamp is proposed to eliminate the non-resetting and successive-stage crosstalk problems observed in the conventional opamp-sharing technique. The ADC achieves a peak SNDR of 60.1 dB (ENOB = 9.69 bits) and a peak SFDR of 76 dB, while maintaining more than 9.6 ENOB for the full Nyquist input bandwidth. The core area of the ADC is 1.1 mm{sup 2} and the chip consumes 28 mW with a 1.8 V power supply. (semiconductor integrated circuits)

  9. Nuclear modification factors of phi mesons in d+Au, Cu+Cu and Au+Au collisions at sqrt(S_NN)=200 GeV

    Czech Academy of Sciences Publication Activity Database

    Adare, A.; Afanasiev, S.; Aidala, C.; Mašek, L.; Mikeš, P.; Růžička, Pavel; Tomášek, Lukáš; Vrba, Václav

    2011-01-01

    Roč. 83, č. 2 (2011), "024909-1"-"024909-10" ISSN 0556-2813 R&D Projects: GA MŠk LA08015 Institutional research plan: CEZ:AV0Z10100502 Keywords : PHENIX experiment * d+AU collisions Subject RIV: BF - Elementary Particles and High Energy Physics Impact factor: 3.308, year: 2011

  10. U.S. interstate pipelines ran more efficiently in 1994

    International Nuclear Information System (INIS)

    True, W.R.

    1995-01-01

    Regulated US interstate pipelines began 1995 under the momentum of impressive efficiency improvements in 1994. Annual reports filed with the US Federal Energy Regulatory Commission (FERC) show that both natural-gas and petroleum liquids pipeline companies increased their net incomes last year despite declining operating revenues. This article discusses trends in the pipeline industry and gives data on the following: pipeline revenues, incomes--1994; current pipeline costs; pipeline costs--estimated vs. actual; current compressor construction costs; compressor costs--estimated vs. actual; US interstate mileage; investment in liquids pipelines; 10-years of land construction costs; top 10 interstate liquids pipelines; top 10 interstate gas pipelines; liquids pipeline companies; and gas pipeline companies

  11. A novel sandwich-type electrochemical aptasensor based on GR-3D Au and aptamer-AuNPs-HRP for sensitive detection of oxytetracycline.

    Science.gov (United States)

    Liu, Su; Wang, Yu; Xu, Wei; Leng, Xueqi; Wang, Hongzhi; Guo, Yuna; Huang, Jiadong

    2017-02-15

    In this paper, a novel sandwich-type electrochemical aptasensor has been fabricated and applied for sensitive and selective detection of antibiotic oxytetracycline (OTC). This sensor was based on graphene-three dimensional nanostructure gold nanocomposite (GR-3D Au) and aptamer-AuNPs-horseradish peroxidase (aptamer-AuNPs-HRP) nanoprobes as signal amplification. Firstly, GR-3D Au film was modified on glassy carbon electrode only by one-step electrochemical coreduction with graphite oxide (GO) and HAuCl 4 at cathodic potentials, which enhanced the electron transfer and loading capacity of biomolecules. Then the aptamer and HRP modified Au nanoparticles provide high affinity and ultrasensitive electrochemical probe with excellent specificity for OTC. Under the optimized conditions, the peak current was linearly proportional to the concentration of OTC in the range of 5×10 -10 -2×10 -3 gL -1 , with a detection limit of 4.98×10 -10 gL -1 . Additionally, this aptasensor had the advantages in high sensitivity, superb specificity and showed good recovery in synthetic samples. Hence, the developed sandwich-type electrochemical aptasensor might provide a useful and practical tool for OTC determination and related food safety analysis and clinical diagnosis. Copyright © 2016 Elsevier B.V. All rights reserved.

  12. 49 CFR 179.10 - Tank mounting.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Tank mounting. 179.10 Section 179.10 Transportation Other Regulations Relating to Transportation PIPELINE AND HAZARDOUS MATERIALS SAFETY... Design Requirements § 179.10 Tank mounting. (a) The manner in which tanks are attached to the car...

  13. rändrat omhändertagande av patienter med uretärsten : - Lärdomar från ett förbättringsarbete

    OpenAIRE

    Khatami, Annelie

    2014-01-01

    Bakgrund: Omkring 10-15 % av befolkningen, oftast i arbetsför ålder, riskerar att någon gång drabbas av njursten. Nationella riktlinjer för njurstensbehandling saknas, men studier stödjer behandling inom 48 timmar för snabb symtomlindring och minskade besvärr patienten. Inom studerad verksamhet var tiden från diagnos till behandling lång och återinläggningarna var många, varför ett förbättringsarbete initierades. Syfte: Syftet med förbättringsarbetet var att halvera tiden från diagnos till...

  14. Les infections urinaires chez les patients insuffisants rénaux chroniques hospitalisés au service de néphrologie: profil bactériologique et facteurs de risque

    Science.gov (United States)

    Chemlal, Abdeljalil; Ismaili, Fatiha Alaoui; Karimi, Ilham; Elharraqui, Ryme; Benabdellah, Nawal; Bekaoui, Samira; Haddiya, Intissar; Bentata, Yassamine

    2015-01-01

    L'infection urinaire chez l'insuffisant rénal est fréquente et particulière dans sa prise en charge diagnostique et thérapeutique. L'objectif de notre étude est de déterminer le profil bactériologique et d’étudier les facteurs de risque des infections urinaires chez le patient insuffisant rénal chronique en milieu de néphrologie. Etude prospective débutée en Septembre 2012 menée au service de néphrologie à l'hôpital régional d'Oujda de l'oriental Marocain. Ont été inclus tous les patients hospitalisés en néphrologie avec une infection urinaire documentée. Nous avons analysé les données démographiques, cliniques, biologiques, et thérapeutiques de nos patients à l'admission et au cours de leurs hospitalisations. 48 épisodes d'infections urinaires chez 43 patients ont été colligés dont 3 enfants. L'incidence de l'infection urinaire dans notre étude était de 4,65%. La médiane d’âge était de 53 (32-66) années. 60,4% étaient de sexe féminin. Le germe isolé était un Escheria Coli dans 58,3% et un Klebsiella dans 29,2%. Le germe isolé était résistant à l'amoxicilline-acide clavulanique dans 83% des cas. L'antibiotique prescris en premiére intention chez nos patients était une céphalosporine de 3 éme génération dans 50%. L’évolution chez nos patients était favorable dans 89,6% des cas. 33,3% avaient présenté un sepsis et on a noté le décès dans 10,4% des cas. Les infections urinaires chez l'insuffisant rénal chronique reste très grave vu leur lourde morbi-mortalié d'où l'intêrét d'un dépistage précoce chez cette population. Un usage raisonné des antibiotiques est nécessaire afin de prévenir l'extension des résistances bactériennes. PMID:26213601

  15. 49 CFR 179.400-11 - Welding.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Welding. 179.400-11 Section 179.400-11...-11 Welding. (a) Except for closure of openings and a maximum of two circumferential closing joints in... subchapter). (d) Each welding procedure, welder, and fabricator must be approved. [Amdt. 179-32, 48 FR 27708...

  16. Generalisation for regular black holes on general relativity to f(R) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, Manuel E. [Universidade Federal do Para Campus Universitario de Abaetetuba, Faculdade de Ciencias Exatas e Tecnologia, Abaetetuba, Para (Brazil); Universidade Federal do Para, Faculdade de Fisica, PPGF, Belem, Para (Brazil); Fabris, Julio C. [Universidade Federal do Espirito Santo, Vitoria, ES (Brazil); National Research Nuclear University MEPhI, Moscow (Russian Federation); Junior, Ednaldo L.B. [Universidade Federal do Para, Faculdade de Fisica, PPGF, Belem, Para (Brazil); Universidade Federal do Para, Campus Universitario de Tucurui, Faculdade de Engenharia da Computacao, Tucurui, Para (Brazil); Marques, Glauber T. [Universidade Federal Rural da Amazonia ICIBE - LASIC, Belem, PA (Brazil)

    2016-05-15

    IIn this paper, we determine regular black hole solutions using a very general f(R) theory, coupled to a nonlinear electromagnetic field given by a Lagrangian L{sub NED}. The functions f(R) and L{sub NED} are in principle left unspecified. Instead, the model is constructed through a choice of the mass function M(r) presented in the metric coefficients. Solutions which have a regular behaviour of the geometric invariants are found. These solutions have two horizons, the event horizon and the Cauchy horizon. All energy conditions are satisfied in the whole space-time, except the strong energy condition (SEC), which is violated near the Cauchy horizon.We present also a new theorem related to the energy conditions in f(R) gravity, re-obtaining the well-known conditions in the context of general relativity when the geometry of the solution is the same. (orig.)

  17. EST Table: AU003879 [KAIKOcDNA[Archive

    Lifescience Database Archive (English)

    Full Text Available AU003879 ws00697 11/12/09 n.h 10/09/28 39 %/206 aa ref|XP_001867321.1| partner of drosha... [Culex quinquefasciatus] gb|EDS44779.1| partner of drosha [Culex quinquefasciatus] 10/08/28 44 %/152 a

  18. Periodic safety review of the HTR-10 safety analysis

    International Nuclear Information System (INIS)

    Chen Fubing; Zheng Yanhua; Shi Lei; Li Fu

    2015-01-01

    Designed by the Institute of Nuclear and New Energy Technology (INET) of Tsinghua University, the 10 MW High Temperature Gas-cooled Reactor-Test Module (HTR-10) is the first modular High Temperature Gas-cooled Reactor (HTGR) in China. According to the nuclear safety regulations of China, the periodic safety review (PSR) of the HTR-10 was initiated by INET after approved by the National Nuclear Safety Administration (NNSA) of China. Safety analysis of the HTR-10 is one of the key safety factors of the PSR. In this paper, the main contents in the review of safety analysis are summarized; meanwhile, the internal evaluation on the review results is presented by INET. (authors)

  19. Silver Nanopartical over AuFON Substrate for Enhanced Raman Readout and Their Application in Pesticide Monitoring

    Directory of Open Access Journals (Sweden)

    Kun Guo

    2015-04-01

    Full Text Available Surface-enhanced Raman detection of thiram is demonstrated by using Ag-nanoparticles (Ag NPs on Au film over nanosphere (AuFON substrate as the hybrid substrate. The SERS signal of the Ag NPs attached to solid supports is studied. The close coupling together of thousands of Ag NPs on AuFON leads to the generation of hot spots for SERS. The Ag NPs on AuFON can be applied to detect rhodamine-6G (R6G with the detection limitation of 1011 M and the pesticide thiram in acetone with a detection limit of as low as 0.24 ppm, which is much lower than the maximal residue limit (MRL of 7 ppm in fruit prescribed by the U.S. Environmental Protection Agency (EPA. The hybrid substrates are shown to be highly sensitive for the detection of thriam, which produce highly enhanced Raman signals with good uniformity and reproducibility due to having plenty of hot spots on its surface.

  20. Identification of Solar Events Responsible for ICMEs at 1AU - Estimation of Chirality and Helicity

    Science.gov (United States)

    Ulrich, Roger K.; tran, Tham; Riley, Pete

    2017-08-01

    We start with the table of identified interplanetary magnetic clouds provided by the WIND/SWI project at https://wind.gsfc.nasa.gov/mfi/mag_cloud_S1.html .Our procedure uses the following steps:1) We take candidates observed during the HMI era from the above catalogue.2) We average cloud start and end times.3) We subtract an estimated travel time to get an origin time.4) We find a halo or partial halo CME near the origin time using the CDAW catalogue.5) We estimate a quadrant for the solar event from the CME shape.6) We use the jHelioviewer on AIA 173 differences with a 5 minute cadence to find an ejected loop near the origin time.7) We place the foot points near the locations of maxima and minima of Br (i.e. the strongest fields of opposite sign).8) We find the field gradients such as (curl B)r at these points.The above steps have been applied to the 37 clouds listed in the MFI table for the period 2011 to 2012 with the result that only 7 clouds could be identified and clearly associated with solar surface origination points. The MFI table includes an estimation of the cloud chirality. Transverse magnetic fields on the solar surface can be determinedfrom the observations of the HMI instrument on the SDO spacecraft in two different ways: the standard HMI pipeline or the Ulrich - Boyden method. The Ulrich - Boyden method gives the correct chirality for all 7 cases while the standard pipeline gives the correct chirality for 6 of the 7 clouds.The clouds are belowAR Solar Source HelicityMFI Number Source Day/Hr Coord Pred Obs129 11158 11/02/15:02:24 S22W09-S18W18 L L133 11226 11/06/01:18:36 S21E19-S19E15 R R134 11226-11227 11/06/02:07:41 S20E26-S21E16 R R138 11289-11293 11/09/13:23:12 N23W13-N17W23 L L148 11504 12/06/14:14:12 S16E11-S16E03 R R154 11560-11561 12/09/02:04:00 N01W04-N05W11 L L161 11610 12/11/10:05:12 S24E11-S20E07 R RThis research has been supported by NASA through award NNX15AF39G to Predictive Science, Inc. and subaward to UCLA

  1. Special signalizing of the Grande River crossing with the OSBRA pipeline

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Adriano C.; Luz, Marcelo Pedroso da; Castro, Newton C. de; Spagnolo, Rodrigo A. [TRANSPETRO, Rio de Janeiro, RJ (Brazil); Silva Junior, Fernando C. Carneiro da [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2009-07-01

    This paper presents the experience acquired by PETROBRAS Transporte S.A., TRANSPETRO, signaling the crossing of Sao Paulo - Brasilia Pipeline, OSBRA, with the Grande River, important brazilian river that has in this cross section 400 m in width and 10 m of average depth. In sub aquatic inspections carried through by divers to confirm the pipeline's silting condition, evidences of basin format dredging near the pipeline have been identified and, even though it was not sufficient to expose de pipeline, has reduced its covering significantly. This site is an important area of sand extraction, and although the intense works of awareness of local dredging companies to not operate in the pipeline area, TRANSPETRO was surprised by the evidences. In testimonials, local dredge operators complained about difficulties in identifying the pipeline position in nightly operations. Expecting to improve the operational security in the pipeline crossing, a joint project was developed by TRANSPETRO, Brazilian Navy and the dredging companies, with the intention to signal safe area around the submerged pipeline, avoiding dredge operations with the installation of polyethylene floating buoys equipped with night signaling kits and fixed by concrete anchors. Although it was technically simple, the unprecedented proposal in Brazil increased safety in the pipeline operations and made them much safer for the local population and for the environment, in one of the biggest water resources of the Southeastern region of Brazil. (author)

  2. Static spherically symmetric wormholes in f(R, T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Zubair, M.; Ahmad, Yasir [Institute Of Information Technology, Department of Mathematics, COMSATS, Lahore (Pakistan); Waheed, Saira [Prince Mohammad Bin Fahd University, Al Khobar (Saudi Arabia)

    2016-08-15

    In this work, we explore wormhole solutions in f(R, T) theory of gravity, where R is the scalar curvature and T is the trace of stress-energy tensor of matter. To investigate this, we consider a static spherically symmetric geometry with matter contents as anisotropic, isotropic, and barotropic fluids in three separate cases. By taking into account the Starobinsky f(R) model, we analyze the behavior of energy conditions for these different kinds of fluids. It is shown that the wormhole solutions can be constructed without exotic matter in few regions of space-time. We also give the graphical illustration of the results obtained and discuss the equilibrium picture for the anisotropic case only. It is concluded that the wormhole solutions with anisotropic matter are realistic and stable in this theory of gravity. (orig.)

  3. Direct flow in 10.8 GeV/nucleon Au+Au collisions measured in experiment E917 at the AGS

    International Nuclear Information System (INIS)

    Back, B. B.; Betts, R. R.; Britt, H. C.; Chang, J.; Chang, W. C.; Gillitzer, A.; Henning, W. F.; Hofman, D. J.; Nanal, V.; Wuosmaa, A. H.

    1999-01-01

    Analysis of directed flow observable for protons and pions from Au+Au collisions at 10.8 GeV/nucleon from experiment E917 at the AGS is presented. Using a Fourier series expansion, the first Fourier component, ν 1 ,was extracted as a function of rapidity for mid-central collisions (17-24%). Clear evidence for positive directed flow is found in the proton data, and a weak, possibly negative directed flow signal is observed for π + and π -

  4. Leadership Pipeline på rejse i den offentlige sektor

    DEFF Research Database (Denmark)

    Nielsen, Jeppe; Dahl, Kristian Aagaard

    2015-01-01

    Forestillingen om, at ledelsesopgaven varierer alt efter hvilket lederniveau, der fokuseres på, trækker spor tilbage til en række tidlige ledelsesteoretikere. I de senere år har tilgangen på ny tiltrukket sig opmærksomhed såvel i praksisfeltet som blandt forskere, nok tydeligst illustreret via ud...... hinanden, og at der i praksis ikke var én, men flere idéer om Leadership Pipeline, der rejste på tværs af felter og organisationer....... udbredelse af Leadership Pipeline modellen. Forskningslitteraturen om Leadership Pipeline er imidlertid beskeden. Med teoretisk ammunition fra ”idé på rejse” perspektivet og et multi-level case studie i den danske offentlige sektor belyser artiklen udbredelse og implementering af Leadership Pipeline. Ved...... at anvende skiftende teoretiske begreber og henholdsvis zoome-ind (organisationsniveau) og zoome-ud (feltniveau) viser artiklen, hvordan en række gensidigt forbundne teoretiserings- og translationsaktiviteter sikrede Leadership Pipeline legitimitet og fremskyndede dens udbredelse samtidig med, at forskellige...

  5. 76 FR 20835 - Amendment of VOR Federal Airways V-1, V-7, V-11 and V-20; Kona, HI

    Science.gov (United States)

    2011-04-14

    ...; Airspace Docket No. 10-AWP-20] Amendment of VOR Federal Airways V-1, V-7, V-11 and V-20; Kona, HI AGENCY..., HI; V-1, V-7, V-11 and V-20. The FAA is taking this action due to procedural changes requiring..., (76 FR 13082), amends VOR Federal Airways V-1, V-7 V-11 and V-20; Kona, HI. These VHF Omnidirectional...

  6. Nordic perspectives on safety management in high reliability organizations: Theory and applications

    International Nuclear Information System (INIS)

    Svenson, Ola; Salo, I.; Sjerve, A.B.; Reiman, T.; Oedewald, P.

    2006-04-01

    The chapters in this volume are written on a stand-alone basis meaning that the chapters can be read in any order. The first 4 chapters focus on theory and method in general with some applied examples illustrating the methods and theories. Chapters 5 and 6 are about safety management in the aviation industry with some additional information about incident reporting in the aviation industry and the health care sector. Chapters 7 through 9 cover safety management with applied examples from the nuclear power industry and with considerable validity for safety management in any industry. Chapters 10 through 12 cover generic safety issues with examples from the oil industry and chapter 13 presents issues related to organizations with different internal organizational structures. Although the many of the chapters use a specific industry to illustrate safety management, the messages in all the chapters are of importance for safety management in any high reliability industry or risky activity. The interested reader is also referred to, e.g., a document by an international NEA group (SEGHOF), who is about to publish a state of the art report on Systematic Approaches to Safety Management (cf., CSNI/NEA/SEGHOF, home page: www.nea.fr). (au)

  7. Nordic perspectives on safety management in high reliability organizations: Theory and applications

    Energy Technology Data Exchange (ETDEWEB)

    Svenson, Ola; Salo, I; Sjerve, A B; Reiman, T; Oedewald, P [Stockholm Univ. (Sweden)

    2006-04-15

    The chapters in this volume are written on a stand-alone basis meaning that the chapters can be read in any order. The first 4 chapters focus on theory and method in general with some applied examples illustrating the methods and theories. Chapters 5 and 6 are about safety management in the aviation industry with some additional information about incident reporting in the aviation industry and the health care sector. Chapters 7 through 9 cover safety management with applied examples from the nuclear power industry and with considerable validity for safety management in any industry. Chapters 10 through 12 cover generic safety issues with examples from the oil industry and chapter 13 presents issues related to organizations with different internal organizational structures. Although the many of the chapters use a specific industry to illustrate safety management, the messages in all the chapters are of importance for safety management in any high reliability industry or risky activity. The interested reader is also referred to, e.g., a document by an international NEA group (SEGHOF), who is about to publish a state of the art report on Systematic Approaches to Safety Management (cf., CSNI/NEA/SEGHOF, home page: www.nea.fr). (au)

  8. L’apprentissage au cern

    CERN Multimedia

    2007-01-01

    pour les professions d’électronicien(ne) et de laborantin(e) en physique L’apprentissage au CERN est régi par les lois, règlements et contrats en vigueur dans le canton de Genève. En cas de réussite à l’examen de fin d’apprentissage, les apprentis obtiennent le Certificat fédéral de capacité suisse (CFC). 6 places au total sont ouvertes au recrutement pour les deux professions. L’apprentissage dure 4 ans. Minima requis pour faire acte de candidature : avoir au moins 15 ans et moins de 21 ans à la date de début de l’apprentissage ; avoir terminé la scolarité obligatoire, au minimum 9e du Cycle d’orientation genevois (3e en France) ; être ressortissant d’un pays membre du CERN (Allemagne, Autriche, Belgique, Bulgarie, Danemark, Espagne, Finlande, France, Grèce, Hongrie, Italie, Norvège, Pays-Bas, Pologne, Portugal, Royaume-Uni, République tchèque, République slovaque , Suède, Suisse) ; pour les résidents en Suisse : être ressortissant su...

  9. 76 FR 29645 - Safety Zone, Newport River; Morehead City, NC

    Science.gov (United States)

    2011-05-23

    ...-AA00 Safety Zone, Newport River; Morehead City, NC AGENCY: Coast Guard, DHS. ACTION: Temporary final... the main span US 70/Morehead City--Newport River high rise bridge in Carteret County, NC. This safety... Zone, Newport River; Morehead City, North Carolina in the Federal Register (33 FR 165). We received no...

  10. 49 CFR 179.200-11 - Postweld heat treatment.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Postweld heat treatment. 179.200-11 Section 179.200-11 Transportation Other Regulations Relating to Transportation PIPELINE AND HAZARDOUS MATERIALS... Postweld heat treatment. When specified in § 179.201-1, after welding is complete, postweld heat treatment...

  11. Pipeline four-dimension management is the trend of pipeline integrity management in the future

    Energy Technology Data Exchange (ETDEWEB)

    Shaohua, Dong; Feifan; Zhongchen, Han [China National Petroleum Corporation (CNPC), Beijing (China)

    2009-07-01

    Pipeline integrity management is essential for today's operators to operate their pipelines safety and cost effectively. The latest developments of pipeline integrity management around the world are involved with change of regulation, industry standard and innovation of technology. And who know the trend of PIM in the future, which can be answered in the paper. As a result, the concept of P4DM was set up firstly in the world. The paper analyzed the pipeline HSE management, pipeline integrity management (PIM) and asset integrity management (AIM), the problem of management was produced, and also the Pipeline 4-dimension Management (P4DM) theory was brought forward. According to P4DM, from the hierarchy of P4DM, the management elements, fields, space and time was analyzed. The main content is P4DM integrate the space geography location and time, control and manage the pipeline system in whole process, anywhere and anytime. It includes the pipeline integrity, pipeline operation and emergency, which is integrated by IT system. It come true that the idea, solution, technology, organization, manager alternately intelligently control the process of management. What the paper talks about included the definition of pipeline 4D management, the research develop of P4DM, the theory of P4DM, the relationship between P4DM and PIM, the technology basis of P4DM, how to perform the P4DM and conclusion. The P4DM was produced, which provide the development direction of PIM in the future, and also provide the new ideas for PetroChina in the field of technology and management. (author)

  12. Au-Pt-Au nanoraspberry structures used for mercury ion detection

    Science.gov (United States)

    Huang, Jiang-Hao; Huang, Shuai; Wen, Xiaoyan; Li, Min; Lu, Haifei

    2017-12-01

    Detection of Hg2+ with high sensitivity is of great significance in the biochemical sensing field. Quantitative of Hg2+ was realized based on the influence of Hg2+ on the UV-vis absorption performance of Au-Pt-Au core-shell nanoraspberry (APA)-rhodamine-6G (R6G) structure. First, APA sol was added into R6G indicator solution and the UV-vis absorption signal intensity of R6G was evidently promoted. The signal intensity monotonously increased as more APA sol was added. However, when HgCl2 solution was introduced, the signal intensity declined. A linear relationship between Hg2+ concentration and signal intensity at 527 nm was revealed, based on which quantitative determination of Hg2+ could be realized. Hg2+ detection sensitivity was measured to be 0.031 a.u./M with a limit of detection of 10-7 M and the response time was 20 s. A high Hg2+ detection selectivity over Cu2+, Na+, Li+, and K+ was demonstrated. Due to its simplicity and high sensitivity, the proposed method could find an extensive application prospect in the Hg2+ detection field.

  13. La Cyberdépendance: Cas de l’addiction au réseau social Facebook

    Directory of Open Access Journals (Sweden)

    Houssem Edine Nasr

    2015-09-01

    Full Text Available La démocratisation de l’internet et la forte pénétration des réseaux sociaux dans la vie de tous les jours des internautes a montré un comportement d’addiction au réseau social Facebook. Malgré l’importance de ce phénomène, très peu de recherches en marketing se sont intéressées à son étude. La présente recherche a pour objectif de mesurer l’addiction des internautes aux réseaux sociaux et d’en déterminer les antécédents. La revue de la littérature relative à l’internet a mis en relief que l’estime de soi et la personnalité sont des antécédents psychologiques de l’addiction. L’enquête par questionnaire que nous avons menée sur Facebook auprès d’un échantillon de convenance de 252 internautes a révélé que trois dimensions sur cinq de la personnalité à savoir l’ouverture aux expériences, l’agréabilité et le névrosisme, sont en relation faible avec la cyberdépendance au réseau social Facebook. Par ailleurs, la variable âge et le nombre d’amis sur Facebook sont en corrélation avec la cyberdépendance à ce réseau social.

  14. Studies for the requirements of automatic and remotely controlled shutoff valves on hazardous liquids and natural gas pipelines with respect to public and environmental safety

    Energy Technology Data Exchange (ETDEWEB)

    Oland, C. Barry [XCEL Engineering, Inc. (United States); Rose, Simon D. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Engineering Science and Technology Div.; Grant, Herb L. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Fabrication, Hoisting and Rigging Div.; Lower, Mark D. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Fabrication, Hoisting and Rigging Div.; Spann, Mark A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Facility Management Div.; Kirkpatrick, John R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computational Sciences and Engineering Div.; Sulfredge, C. David [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computational Sciences and Engineering Div.

    2012-12-01

    This study assesses the effectiveness of block valve closure swiftness in mitigating the consequences of natural gas and hazardous liquid pipeline releases on public and environmental safety. It also evaluates the technical, operational, and economic feasibility and potential cost benefits of installing automatic shutoff valves (ASVs) and remote control valves (RCVs) in newly constructed and fully replaced transmission lines. Risk analyses of hypothetical pipeline release scenarios are used as the basis for assessing: (1) fire damage to buildings and property in Class 1, Class 2, Class 3, and Class 4 high consequence areas (HCAs) caused by natural gas pipeline releases and subsequent ignition of the released natural gas; (2) fire damage to buildings and property in HCAs designated as high population areas and other populated areas caused by hazardous liquid pipeline releases and subsequent ignition of the released propane; and (3) socioeconomic and environmental damage in HCAs caused by hazardous liquid pipeline releases of crude oil. These risk analyses use engineering principles and fire science practices to characterize thermal radiation effects on buildings and humans and to quantify the total damage cost of socioeconomic and environmental impacts. The risk analysis approach used for natural gas pipelines is consistent with risk assessment standards developed by industry and incorporated into Federal pipeline safety regulations. Feasibility evaluations for the hypothetical pipeline release scenarios considered in this study show that installation of ASVs and RCVs in newly constructed and fully replaced natural gas and hazardous liquid pipelines is technically, operationally, and economically feasible with a positive cost benefit. However, these results may not apply to all newly constructed and fully replaced pipelines because site-specific parameters that influence risk analyses and feasibility evaluations often vary significantly from one pipeline segment to

  15. Perspectives d'introduction d'un marketing des services au sein des banques publiques Algériennes : Cas de la B.A.D.R.

    OpenAIRE

    Lachachi-taleb, Meriem

    2014-01-01

    Le premier chapitre présente les fondements théoriques relatifs au marketing des services ainsi qu'au concept de servuction et enfin au marketing mix des services dans le deuxiéme chapitre.Le troisiéme chapitre est consacré au marketing bancaire et au plan marketing dans le chapitre suivant, une étude de cas au sein de la B.A.D.R.Banque.

  16. 78 FR 77484 - Extension of Agency Information Collection Activity Under OMB Review: Pipeline System Operator...

    Science.gov (United States)

    2013-12-23

    ... Officer, Office of Information Technology (OIT), TSA-11, Transportation Security Administration, 601 South... Information Collection Activity Under OMB Review: Pipeline System Operator Security Information AGENCY... Transportation Security Administration (TSA) has forwarded the Information Collection Request (ICR), Office of...

  17. 75 FR 49943 - New Agency Information Collection Activity Under OMB Review: Pipeline System Operator Security...

    Science.gov (United States)

    2010-08-16

    ... INFORMATION CONTACT: Joanna Johnson, Office of Information Technology, TSA-11, Transportation Security... Collection Activity Under OMB Review: Pipeline System Operator Security Information AGENCY: Transportation... System Operator Security Information. Type of Request: New collection. OMB Control Number: Not yet...

  18. Power-law cosmic expansion in f(R) gravity models

    International Nuclear Information System (INIS)

    Goheer, Naureen; Larena, Julien; Dunsby, Peter K. S.

    2009-01-01

    We show that within the class of f(R) gravity theories, Friedmann-Lemaitre-Robertson-Walker power-law perfect fluid solutions only exist for R n gravity. This significantly restricts the set of exact cosmological solutions which have similar properties to what is found in standard general relativity.

  19. 77 FR 32631 - Lion Oil Trading & Transportation, Inc., Magnolia Pipeline Company, and El Dorado Pipeline...

    Science.gov (United States)

    2012-06-01

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. OR12-13-000] Lion Oil... of the Commission's Rules of Practice and Procedure, 18 CFR 385.202 (2011), Lion Oil Trading & Transportation, Inc., Magnolia Pipeline Company, and El Dorado Pipeline Company, collectively, Lion Companies...

  20. Neutron backscattered application in investigation for Pipeline Intelligent Gauge (PIG) tracking in RAYMINTEX matrix pipeline

    International Nuclear Information System (INIS)

    Mohd Fakarudin Badul Rahman; Ismail Mustapha; Nor Paiza Mohd Hasan; Pairu Ibrahim; Airwan Affandi Mahmood; Mior Ahmad Khusaini Adnan; Najib Mohammed Zakey

    2012-01-01

    The Radiation Vulcanized Natural Rubber Latex (RVNRL) process plants such RAYMINTEX, pipelines are used extensively to transfer a latex product from storage vessel and being irradiated to produce a high quality of latex. A hydraulically activated Pipeline Intelligent Gauge (PIG) was held back against the latex flow. Consequently, the stuck PIG in pipeline was subjected to interrupt plant operation. The investigation was carried out using the neutron backscattered technique scanner to track the stuck PIG in pipeline of RVNRL plant. The 50 mCi Americium Beryllium (AmBe 241 ) fast neutron emitter source in the range 0.5-11 MeV has been used and thermal neutrons in the 30 eV- 0.5 MeV was detected using Helium-3 (He 3 ) detector. It is observed that there is unambiguous relationship between vapour and RVNRL consequence of diverse hydrogen concentration in pipeline. Thus, neutron backscattered technique was capable to determine the location of stuck PIG in a RVNRL pipeline. (author)

  1. The simplest non-minimal matter-geometry coupling in the f(R, T) cosmology

    Energy Technology Data Exchange (ETDEWEB)

    Moraes, P.H.R.S. [ITA - Instituto Tecnologico de Aeronautica, Departamento de Fisica, Sao Paulo (Brazil); Sahoo, P.K. [Birla Institute of Technology and Science-Pilani, Department of Mathematics, Hyderabad (India)

    2017-07-15

    f(R, T) gravity is an extended theory of gravity in which the gravitational action contains general terms of both the Ricci scalar R and the trace of the energy-momentum tensor T. In this way, f(R, T) models are capable of describing a non-minimal coupling between geometry (through terms in R) and matter (through terms in T). In this article we construct a cosmological model from the simplest non-minimal matter-geometry coupling within the f(R, T) gravity formalism, by means of an effective energy-momentum tensor, given by the sum of the usual matter energy-momentum tensor with a dark energy contribution, with the latter coming from the matter-geometry coupling terms. We apply the energy conditions to our solutions in order to obtain a range of values for the free parameters of the model which yield a healthy and well-behaved scenario. For some values of the free parameters which are submissive to the energy conditions application, it is possible to predict a transition from a decelerated period of the expansion of the universe to a period of acceleration (dark energy era). We also propose further applications of this particular case of the f(R, T) formalism in order to check its reliability in other fields, rather than cosmology. (orig.)

  2. The simplest non-minimal matter-geometry coupling in the f(R, T) cosmology

    International Nuclear Information System (INIS)

    Moraes, P.H.R.S.; Sahoo, P.K.

    2017-01-01

    f(R, T) gravity is an extended theory of gravity in which the gravitational action contains general terms of both the Ricci scalar R and the trace of the energy-momentum tensor T. In this way, f(R, T) models are capable of describing a non-minimal coupling between geometry (through terms in R) and matter (through terms in T). In this article we construct a cosmological model from the simplest non-minimal matter-geometry coupling within the f(R, T) gravity formalism, by means of an effective energy-momentum tensor, given by the sum of the usual matter energy-momentum tensor with a dark energy contribution, with the latter coming from the matter-geometry coupling terms. We apply the energy conditions to our solutions in order to obtain a range of values for the free parameters of the model which yield a healthy and well-behaved scenario. For some values of the free parameters which are submissive to the energy conditions application, it is possible to predict a transition from a decelerated period of the expansion of the universe to a period of acceleration (dark energy era). We also propose further applications of this particular case of the f(R, T) formalism in order to check its reliability in other fields, rather than cosmology. (orig.)

  3. 78 FR 42818 - SafetyAlert: Safety Alert: Risks Associated With Liquid Petroleum (LP) Gas Odor Fade

    Science.gov (United States)

    2013-07-17

    ... gas that under certain conditions is required to be odorized for leak detection. The purpose of this... detection of any unintended release or leak of the gas. LPG is highly flammable and dangerous to inhale in... DEPARTMENT OF TRANSPORTATION Pipeline and Hazardous Materials Safety Administration [Docket No...

  4. Camps de réfugiés et environnement au Kenya : enjeux et contradictions

    OpenAIRE

    Cambrézy, Luc

    2001-01-01

    Dans les camps de réfugiés de Dadaab, au Kenya, un programme de protection environnementale et de réhabilitation du couvert végétal a été mis en place plusieurs années avant tout réel diagnostic sur l'ampleur et l'origine réelle des dégradations constatées. Des études ultérieures ont montré que les auréoles de dégradation autour des camps semblent essentiellement imputables aux besoins ligneux pour la construction et la maintenance des nombreuses infrastructures et non pas à la collecte de bo...

  5. Mouline Nabil, Le califat imaginaire d’Ahmad al-Mansûr. Pouvoir et diplomatie au Maroc au xvie siècle, PUF, Proche-Orient, Paris, 2009, 371 p.

    Directory of Open Access Journals (Sweden)

    Halima Ferhat

    2010-09-01

    Full Text Available Au lendemain de la bataille des Trois Rois, plus connue au Maroc sous le nom de Ouad al Makhazin, de redoutables acteurs s’affrontent : les Habsbourgs d’Espagne et leurs ennemis protestants aux Pays Bas, l’Angleterre, le Portugal dont l’autonomie est désormais remise en question, ainsi que de multiples petits princes locaux et les maîtres des zaouyas sans oublier les corsaires qui, il faut le rappeler, forment un réseau qui n’est pas toujours à l’ordre d’un pays. Plusieurs excellents livres r...

  6. Faut-il réformer la caisse de compensation au Maroc ?

    OpenAIRE

    Tarbalouti, Mr

    2014-01-01

    Faut-il réformer la caisse de compensation au Maroc? Par Essaid Tarbalouti Version, Mars 2014 The debate on the efficiency of the subsidy of the prices of foodstuffs granted by the policy of compensation and his reform are deeply livened up between the government and the opposition in terms of its cost and its ineffectiveness. This debate concentrate on the social earnings to replace this mechanism of assistant by the granting of a minimum income to the poor people. We...

  7. 29 CFR 1960.11 - Evaluation of occupational safety and health performance.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Evaluation of occupational safety and health performance. 1960.11 Section 1960.11 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH... AND HEALTH PROGRAMS AND RELATED MATTERS Administration § 1960.11 Evaluation of occupational safety and...

  8. Sequential and double sequential fission observed in heavy ion interaction of (11.67 MeV/u)197Au projectile with 197Au target

    International Nuclear Information System (INIS)

    Nasir, Tabassum; Khan, Ehsan Ullah; Baluch, Javaid Jahan; Shafi-Ur-Rehman; Matiullah; Rafique, Muhammad

    2009-01-01

    The heavy ion interaction of 11.67 MeV/u 197 Au+ 197 Au has been investigated using mica as a passive detector. By employing Solid State Nuclear Track Detection Technique the data of elastic scattering as well as inelastic reaction channel was collected. The off-line data analysis of multi-pronged events was performed by measuring the three-dimensional geometrical coordinates of correlated tracks on event-by-event basis. Multi pronged events observed in this reaction were due to sequential and double sequential fission. Using a computer code PRONGY based on the procedure of internal calibration, it was possible to derive quantities like mass transfer, total kinetic energy loss and scattering angles. (author)

  9. CANDU Safety R&D Status, Challenges, and Prospects in Canada

    Directory of Open Access Journals (Sweden)

    W. Shen

    2015-01-01

    Full Text Available In Canada, safe operation of CANDU (CANada Deuterium Uranium; it is a registered trademark of Atomic Energy of Canada Limited reactors is supported by a full-scope program of nuclear safety research and development (R&D in key technical areas. Key nuclear R&D programs, facilities, and expertise are maintained in order to address the unique features of the CANDU as well as generic technology areas common to CANDU and LWR (light water reactor. This paper presents an overview of the CANDU safety R&D which includes background, drivers, current status, challenges, and future directions. This overview of the Canadian nuclear safety R&D programs includes those currently conducted by the COG (CANDU Owners Group, AECL (Atomic Energy of Canada Limited, Candu Energy Inc., and the CNSC (Canadian Nuclear Safety Commission and by universities via UNENE (University Network of Excellence in Nuclear Engineering sponsorship. In particular, the nuclear safety R&D program related to the emerging CANDU ageing issues is discussed. The paper concludes by identifying directions for the future nuclear safety R&D.

  10. Internal corrosion control of northern pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Papavinasam, S.

    2005-02-01

    The general causes of internal corrosion in pipelines were discussed along with the methods to control them. Efficient methods are needed to determine chemical efficiency for mitigating internal corrosion in transmission pipelines, particularly those used in environmentally sensitive regions in the Arctic where harsh environmental conditions prevail. According to the Office of Pipeline Safety, 15 per cent of pipeline failures in the United States from 1994 to 2000 were caused by internal corrosion. Since pipelines in the United States are slightly older than Canadian pipelines, internal corrosion is a significant issue from a Canadian perspective. There are 306,618 km of energy-related pipelines in western Canada. Between April 2001 and March 2002 there were 808 failures, of which 425 failures resulted from internal corrosion. The approach to control internal corrosion comprises of dehydrating the gases at production facilities; controlling the quality of corrosive gases such as carbon dioxide and hydrogen sulphide; and, using internal coatings. The approaches to control internal corrosion are appropriate, when supplemented by adequate integrity management program to ensure that corrosive liquids do not collect, over the operational lifetime of the pipelines, at localized areas. It was suggested that modeling of pipeline operations may need improvement. This paper described the causes, prediction and control of internal pitting corrosion. It was concluded that carbon steel equipment can continue to be used reliably and safely as pipeline materials for northern pipelines if the causes that lead to internal corrosion are scientifically and accurately predicted, and if corrosion inhibitors are properly evaluated and applied. 5 figs.

  11. Microstructures and coherent phase diagram for the pseudobinary system (AuCu)1-xPd x with x ≤ 0.10

    International Nuclear Information System (INIS)

    Luciano, Rhodora H.; Shiraishi, Takanobu; Udoh, Koh-ichi; Tanaka, Yasuhiro; Hisatsune, Kunihiro

    2005-01-01

    A coherent phase diagram for the pseudobinary system (AuCu) 1-x Pd x with x ≤ 0.10 was constructed based on phase identification and microstructural analysis by transmission electron microscopy. It was confirmed that the addition of palladium exceeding 1.0 at.% to the equiatomic AuCu eliminated the AuCu II long-period superstructure from the phase equilibria and stabilized the AuCu I superstructure. The AuCu-0.5 at.% Pd and AuCu-1.0 at.% Pd alloys isothermally aged for long time at temperatures ranging from 380 to 420 deg. C exhibited seven distinguishable regions; a single-phase region of disordered solid solution (α); a single-phase region of AuCu I ordered phase; a single-phase region of AuCu II ordered phase; a region of the coexisting AuCu I and AuCu II ordered phases; a region of the coexisting AuCu I ordered and α phases; a region of the coexisting AuCu II ordered and α phases; and a region of the coexisting AuCu I and AuCu II ordered and α phases

  12. Compact stars in f(R, T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Das, Amit; Guha, B.K. [Indian Institute of Engineering Science and Technology, Department of Physics, Howrah, West Bengal (India); Rahaman, Farook [Jadavpur University, Department of Mathematics, Kolkata, West Bengal (India); Ray, Saibal [Government College of Engineering and Ceramic Technology, Department of Physics, Kolkata, West Bengal (India)

    2016-12-15

    In the present paper we generate a set of solutions describing the interior of a compact star under f(R, T) theory of gravity which admits conformal motion. An extension of general relativity, the f(R, T) gravity is associated to Ricci scalar R and the trace of the energy-momentum tensor T. To handle the Einstein field equations in the form of differential equations of second order, first of all we adopt the Lie algebra with conformal Killing vectors (CKV) which enable one to get a solvable form of such equations and second we consider the equation of state (EOS) p = ωρ with 0 < ω < 1 for the fluid distribution consisting of normal matter, ω being the EOS parameter. We therefore analytically explore several physical aspects of the model to represent behavior of the compact stars such as - energy conditions, TOV equation, stability of the system, Buchdahl condition, compactness and redshift. It is checked that the physical validity and the acceptability of the present model within the specified observational constraint in connection to a dozen of the compact star candidates are quite satisfactory. (orig.)

  13. SERS-active Ag, Au and Ag–Au alloy nanoparticles obtained by laser ablation in liquids for sensing methylene blue

    Energy Technology Data Exchange (ETDEWEB)

    Olea-Mejía, Oscar, E-mail: oleaoscar@yahoo.com.mx [Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, km 14.5 Carretera Toluca-Atlacomulco, San Cayetano 50200, México (Mexico); Fernández-Mondragón, Mariana; Rodríguez-de la Concha, Gabriela [Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, km 14.5 Carretera Toluca-Atlacomulco, San Cayetano 50200, México (Mexico); Camacho-López, Marco [Laboratorio de Investigación y Desarrollo de Materiales Avanzados, Universidad Autónoma del Estado de México, Km 14.5 Carretera Toluca-Atlacomulco, San Cayetano 50925, México (Mexico)

    2015-09-01

    Highlights: • We synthesized Ag/Au nanoparticles by laser ablation in liquids. • We characterized such particles by UV–vis, TEM and EDS/STEM. • The SERS effect was studied for the obtained nanoparticles. • Pure silver nanoparticles showed the highest SERS signals. • We can sense methylene blue at a concentration of 10{sup −10} mole/L. - Abstract: We have synthesized Ag–Au nanoparticles by laser ablation in liquids using five different targets: 100% Ag, 80%Ag/20%Au, 50%Ag/50%Au, 20%Ag/80%Au and 100% Au (weight percentages). We used ethanol and methylene blue solutions in ethanol as the liquid media. The nanoparticles were mostly spherical with diameters 15, 19, 18, 23 and 11 nm, respectively. When alloyed targets were used, the resulting nanoparticles were completely alloyed forming solid solutions as evidenced by UV–vis Spectroscopy and Scanning Transmission Electron Microscopy. The obtained nanoparticles were employed to study the SERS effect of the methylene blue molecule. All the samples showed good SERS activity, however the ones composed of pure silver showed the greatest Raman signal enhancement. Finally, pure Ag nanoparticles were used for sensing methylene blue at different concentrations. While almost no signal can be discerned from the Raman spectrum when no particles are used at a concentration of methylene blue of 1 × 10{sup −2} M (∼3000 ppm), when Ag nanoparticles are used one can observe the characteristic peak of the molecule at concentrations as low as 1 × 10{sup −10} M (∼3 × 10{sup −5} ppm)

  14. Solving an unpiggable pipeline challenge

    Energy Technology Data Exchange (ETDEWEB)

    Walker, James R. [GE Oil and Gas, PII Pipeline Solutions, Cramlington Northumberland (United Kingdom); Kern, Michael [National Grid, New Hampshire (United Kingdom)

    2009-07-01

    Technically, any pipeline can be retrofitted to enable in line inspection. Sensibly however, the expense of excavations and construction of permanent facilities have been, in many cases, exceedingly prohibitive. Even where traditional modifications are feasible from engineering perspectives, flow interruption may not be an option - either because they are critical supply lines or because the associated lost revenues could be nearly insurmountable. Savvy pipeline integrity managers know the safety issue that is at stake over the long term. They are also well aware of the accuracy benefits that high-quality in-line inspection data offer over potentially supply disruptive alternatives such as hydrostatic testing. To complicate matters further, many operators, particularly in the US, now face regulatory pressure to assess the integrity of their yet-uninspected pipelines located in highly populated areas. This paper describes an important project National Grid undertook that made use of a unique pipeline access method that did not require permanent installation of expensive facilities required for in line inspection of a pipeline previously considered 'unpiggable'. Since the pipeline was located in an urban area, flow disruption had to be minimized. This paper will define the project background, its challenges, outcomes and lessons learned for the future. (author)

  15. Fréjus – Chemins de Valescure

    OpenAIRE

    Cotto, Kelig-Yann

    2013-01-01

    Identifiant de l'opération archéologique : 8306 Date de l'opération : 2007 (EX) Inventeur(s) : Ctto Kelig-Yann (COL) La Société d’économie mixte « Fréjus-Aménagement » ayant en projet la construction d’une vaste zone de logements au lieu-dit Chemins de Valescure, elle a, en 2007, saisi la DRAC d’une demande anticipée de réalisation de diagnostic. Celui-ci a porté sur une surface d’environ 3 ha. Seule la partie sud s’est révélée positive, permettant la mise au jour d’une vaste zone archéologiq...

  16. Brane f(R) gravity and the dark side of the universe

    International Nuclear Information System (INIS)

    Borzou, A.; Sepangi, H. R.; Shahidi, S.; Yousefi, R.

    2009-01-01

    We consider a brane world scenario in which the bulk action is assumed to have the form of a generic function of the Ricci scalar f(R) and derive the resulting Einstein field equation on the brane. In a constant curvature bulk a conserved geometric quantity appears in the field equations which can be associated with matter. We present spherically symmetric solutions which account for galaxy rotation curves in a specific form. Then cosmological solutions by assuming a specific form for f(R) are derived which can explain an accelerated expanding universe.

  17. U.S. EPA, Pesticide Product Label, SEVIN 5% DUST, 11/19/1981

    Science.gov (United States)

    2011-04-21

    ... "e;;t~~i~:i'·:,~r:.;~. eT~;:': i:, .O~~~:~J It;;;'"lh~''I~;.rP:~,~: t;~~ ';JI.~~ n>nl~ .nd "',"'nlll frU'1 m"lh KPI>I .. d( 1',",41 r.11 and .""rv II) to 14 ...

  18. Enhanced absorption in Au nanoparticles/a-Si:H/c-Si heterojunction solar cells exploiting Au surface plasmon resonance

    Energy Technology Data Exchange (ETDEWEB)

    Losurdo, Maria; Giangregorio, Maria M.; Bianco, Giuseppe V.; Sacchetti, Alberto; Capezzuto, Pio; Bruno, Giovanni [Institute of Inorganic Methodologies and of Plasmas, IMIP-CNR, via Orabona 4, 70126 Bari (Italy)

    2009-10-15

    Au nanoparticles (NPs)/(n-type)a-Si:H/(p-type)c-Si heterojunctions have been deposited combining plasma-enhanced chemical-vapour deposition (PECVD) with Au sputtering. We demonstrate that a density of {proportional_to}1.3 x 10{sup 11} cm{sup -2} of Au nanoparticles with an approximately 20 nm diameter deposited onto (n-type)a-Si:H/(p-type)c-Si heterojunctions enhance performance exploiting the improved absorption of light by the surface plasmon resonance of Au NPs. In particular, Au NPs/(n-type)a-Si:H/(p-type)c-Si show an enhancement of 20% in the short-circuit current, J{sub SC}, 25% in the power output, P{sub max} and 3% in the fill factor, FF, compared to heterojunctions without Au NPs. Structures have been characterized by spectroscopic ellipsometry, atomic force microscopy and current-voltage (I-V) measurements to correlate the plasmon resonance-induced enhanced absorption of light with photovoltaic performance. (author)

  19. Safety Training: places available in September 2013

    CERN Document Server

    Isabelle Cusato, HSE Unit

    2013-01-01

    There are places available in the forthcoming Safety courses. For updates and registrations, please refer to the Safety Training Catalogue. September 2013 (alphabetical order) Conduite de plates-formes élévatrices mobiles de personnel (PEMP) (Cherry-picker driving) 12-SEP-13 au 13-SEP-13, 8.30 – 17.30, in French with handouts in English Ergonomics - Applying ergonomic principles in the workplace 19-SEP-13, 9.00 – 12.00, in French Être TSO au CERN (Being TSO at CERN) 10-SEP-13 to 12-SEP-13, 8.30 – 17.30, in French Habilitation ATEX - niveau 2 (ATEX habilitation - level 2) 19-SEP-13 to 20-SEP-13, 9.00 – 17.30, in French Habilitation électrique personnel électricien basse tension (electrical habilitation for electricians in low voltage) 11-SEP-13 to 13-SEP-13, 9.00 – 17.30, in English 23-SEP-13 to 25-SEP-13, 9.00 – 17.30, in French Habilitation électrique personnel non &eacut...

  20. Study of some chaotic inflationary models in f(R) gravity

    Science.gov (United States)

    Sharif, M.; Nawazish, Iqra

    2018-04-01

    In this paper, we discuss an inflationary scenario via scalar field and fluid cosmology for an anisotropic homogeneous universe model in f(R) gravity. We consider an equation of state which corresponds to a quasi-de Sitter expansion and investigate the effect of the anisotropy parameter for different values of the deviation parameter. We evaluate potential models like linear, quadratic and quartic models which correspond to chaotic inflation. We construct the observational parameters for a power-law model of f(R) gravity and construct the graphical analysis of tensor-scalar ratio and spectral index which indicates the consistency of these parameters with Planck 2015 data.

  1. Artificially phase-separated binary self-assembled monolayers composed of 11-amino-1-undecanethiolate and 10-carboxy-1-decanethiolate on Au(1 1 1): A comparative study of two preparing methods

    International Nuclear Information System (INIS)

    Phong, Pham Hong; Tomono, Hyroyuki; Nishi, Naoya; Yamamoto, Masahiro; Kakiuchi, Takashi

    2008-01-01

    Two methods have been compared for preparing artificially phase-separated two-component SAMs on Au(1 1 1) composed of 11-amino-1-undecanethiolates (AUTe) and 10-carboxyl-1-decanethiolates (CDTe), which would form, thermodynamically, a homogeneously mixed binary SAMs. The first method starts with the formation of a phase-separated binary SAM of AUTe and 2-hydroxy-1-ethanethiolate (HETe) as a template of the artificially phase-separated SAM, followed by the selective desorption of HETe domains and succeeding filling of the vacancy with CDTe. The second method utilizes fluoren-9-ylmethyl N-(11-mercaptoundecyl) carbamate (FMUCe) instead of 11-amino-1-undecanethiol in preparing the template. After the filling with CDTe, the 9-fluorenylmethyloxycarbonyl (Fmoc) group is removed to obtain AUTe domains. Both methods yield artificially phase-separated binary SAMs having AUTe domains of tens nanometer across. The molecularly flat SAM surface with nanometer-scale domains of different acid-base and electrostatic properties are thus created. For preparing binary SAMs with a higher degree of phase separation, the second method is a better choice; a more clear-cut phase separation is achieved

  2. Revisiting van der Waals like behavior of f(R AdS black holes via the two point correlation function

    Directory of Open Access Journals (Sweden)

    Jie-Xiong Mo

    2017-05-01

    Full Text Available Van der Waals like behavior of f(R AdS black holes is revisited via two point correlation function, which is dual to the geodesic length in the bulk. The equation of motion constrained by the boundary condition is solved numerically and both the effect of boundary region size and f(R gravity are probed. Moreover, an analogous specific heat related to δL is introduced. It is shown that the T−δL graphs of f(R AdS black holes exhibit reverse van der Waals like behavior just as the T−S graphs do. Free energy analysis is carried out to determine the first order phase transition temperature T⁎ and the unstable branch in T−δL curve is removed by a bar T=T⁎. It is shown that the first order phase transition temperature is the same at least to the order of 1010 for different choices of the parameter b although the values of free energy vary with b. Our result further supports the former finding that charged f(R AdS black holes behave much like RN-AdS black holes. We also check the analogous equal area law numerically and find that the relative errors for both the cases θ0=0.1 and θ0=0.2 are small enough. The fitting functions between log⁡|T−Tc| and log⁡|δL−δLc| for both cases are also obtained. It is shown that the slope is around 3, implying that the critical exponent is about 2/3. This result is in accordance with those in former literatures of specific heat related to the thermal entropy or entanglement entropy.

  3. 76 FR 57635 - Restrictions on Operators Employing Former Flight Standards Service Aviation Safety Inspectors...

    Science.gov (United States)

    2011-09-16

    ... Standards Service Aviation Safety Inspectors; Correction AGENCY: Federal Aviation Administration (FAA), DOT... ``Restrictions on Operators Employing Former Flight Standards Service Aviation Safety Inspectors'' (76 FR 52231... of, a Flight Standards Service Aviation Safety Inspector, and had direct responsibility to inspect...

  4. Evaluating item endorsement rates for the MMPI-2-RF F-r and Fp-r scales across ethnic, gender, and diagnostic groups with a forensic inpatient sample.

    Science.gov (United States)

    Glassmire, David M; Jhawar, Amandeep; Burchett, Danielle; Tarescavage, Anthony M

    2017-05-01

    The Minnesota Multiphasic Personality Inventory-2 (MMPI-2) F(p) (Infrequency-Psychopathology) scale was developed to measure overreporting in a manner that was minimally confounded by genuine psychopathology, which was a problem with using the MMPI-2 F (Infrequency) scale among patients with severe mental illness. Although revised versions of both of these scales are included on the MMPI-2-Restructured Form and used in a forensic context, no item-level research has been conducted on their sensitivity to genuine psychopathology among forensic psychiatric inpatients. Therefore, we examined the psychometric properties of the scales in a sample of 438 criminally committed forensic psychiatric inpatients who were adjudicated as not guilty by reason of insanity and had no known incentive to overreport. We found that 20 of the 21 Fp-r items (95.2%) demonstrated endorsement rates ≤ 20%, with 14 of the items (66.7%) endorsed by less than 10% of the sample. Similar findings were observed across genders and across patients with mood and psychotic disorders. The one item endorsed by more than 20% of the sample had a 23.7% overall endorsement rate and significantly different endorsement rates across ethnic groups, with the highest endorsements occurring among Hispanic/Latino (43.3% endorsement rate) patients. Endorsement rates of F-r items were generally higher than for Fp-r items. At the scale level, we also examined correlations with the Restructured Clinical Scales and found that Fp-r demonstrated lower correlations than F-r, indicating that Fp-r is less associated with a broad range of psychopathology. Finally, we found that Fp-r demonstrated slightly higher specificity values than F-r at all T score cutoffs. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  5. Detection of leaks in buried rural water pipelines using thermal infrared images

    Science.gov (United States)

    Eidenshink, Jeffery C.

    1985-01-01

    Leakage is a major problem in many pipelines. Minor leaks called 'seeper leaks', which generally range from 2 to 10 m3 per day, are common and are difficult to detect using conventional ground surveys. The objective of this research was to determine whether airborne thermal-infrared remote sensing could be used in detecting leaks and monitoring rural water pipelines. This study indicates that such leaks can be detected using low-altitude 8.7- to 11.5. micrometer wavelength, thermal infrared images collected under proper conditions.

  6. 77 FR 20807 - Northwest Pipeline GP; Notice of Application

    Science.gov (United States)

    2012-04-06

    ... diameter pipelines away from an adjacent surface coal mine west of Kemmerer, Wyoming. Northwest also... directed to Pam Barnes, Manager Certificates and Tariffs, Northwest Pipeline GP, 295 Chipeta Way, Salt Lake...

  7. A 10-bit 50-MS/s subsampling pipelined ADC based on SMDAC and opamp sharing

    Energy Technology Data Exchange (ETDEWEB)

    Chen Lijie; Zhou Yumei; Wei Baoyue, E-mail: frankdhz@yahoo.com.cn [Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029 (China)

    2010-11-15

    This paper describes a 10-bit, 50-MS/s pipelined A/D converter (ADC) with proposed area- and power-efficient architecture. The conventional dedicated sample-hold-amplifier (SHA) is eliminated and the matching requirement between the first multiplying digital-to-analog converter (MDAC) and sub-ADC is also avoided by using the SHA merged with the first MDAC (SMDAC) architecture, which features low power and stabilization. Further reduction of power and area is achieved by sharing an opamp between two successive pipelined stages, in which the effect of opamp offset and crosstalk between stages is decreased. So the 10-bit pipelined ADC is realized using just four opamps. The ADC demonstrates a maximum signal-to-noise distortion ratio and spurious free dynamic range of 52.67 dB and 59.44 dB, respectively, with a Nyquist input at full sampling rate. Constant dynamic performance for input frequencies up to 49.7 MHz, which is the twofold Nyquist rate, is achieved at 50 MS/s. The ADC prototype only occupies an active area of 1.81 mm{sup 2} in a 0.35 {mu}m CMOS process, and consumes 133 mW when sampling at 50 MHz from a 3.3-V power supply.

  8. Managing changes of location classes of gas pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Cunha, Sergio B; Sousa, Antonio Geraldo de [PETROBRAS Transporte S.A. (TRANSPETRO), Rio de Janeiro, RJ (Brazil)

    2009-12-19

    Most of the gas pipeline design codes utilize a class location system, where the design safety factor and the hydrostatic test factor are determined according to the population density in the vicinities of the pipeline route. Consequently, if an operator is requested or desires to maintain an existing gas pipeline in compliance with its design code, it will reduce the operational pressure or replace pipe sections to increase the wall thickness whenever a change in location class takes place. This article introduces an alternative methodology to deal with changes in location classes of gas pipelines. Initially, selected codes that utilize location class systems are reviewed. Afterwards, a model for the area affected by an ignition following a natural gas pipeline leak is described. Finally, a methodology to determine the MAOP and third part damage mitigation measures for gas transport pipelines that underwent changes in location class is presented. (author)

  9. Importprocessen för inrednings- och gåvoartiklar från USA till Finland : En handbok för företagaren

    OpenAIRE

    Smeds, Desiré; Backlund, Johanna

    2016-01-01

    Det här examensarbetet handlar om import från USA med fokus på inrednings- och gåvoartiklar. I arbetet lyfter vi steg för steg fram de delar som utgör importprocessen hela vägen från hur man hittar en pålitlig leverantör till förtullningen av produkterna här i Finland. Syftet med arbetet är att det skall kunna fungera som en handbok för företag som vill starta en småskalig importverksamhet av inrednings- och gåvoartiklar. Vi tar även upp information om import och internationell handel i a...

  10. De l’acceptabilité sociale au développement local résilient

    OpenAIRE

    Raufflet, Emmanuel

    2014-01-01

    Au cours des dernières années, les enjeux liés à l’acceptabilité sociale des activités économiques, en particulier dans le secteur extractif, se sont imposées comme des enjeux significatifs tant pour les entreprises, en tant qu’investisseurs directs et opérateurs des projets que pour les pouvoirs publics, comme promoteurs de projets de développement économique local et régional. Notre argument principal est que le mode de pensée vers le développement local résilient devrait remplacer celui pr...

  11. Wormholes in viable f(R) modified theories of gravity and weak energy condition

    Energy Technology Data Exchange (ETDEWEB)

    Pavlovic, Petar [Universitaet Hamburg, II. Institut fuer Theoretische Physik, Hamburg (Germany); Sossich, Marko [University of Zagreb, Department of Physics, Faculty of Electrical Engineering and Computing, Zagreb (Croatia)

    2015-03-01

    In this work wormholes in viable f(R) gravity models are analyzed. We are interested in exact solutions for stress-energy tensor components depending on different shape and redshift functions. Several solutions of gravitational equations for different f(R) models are examined. The solutions found imply no need for exotic material, while this need is implied in the standard general theory of relativity. A simple expression for weak energy condition (WEC) violation near the throat is derived and analyzed. High curvature regime is also discussed, as well as the question of the highest possible values of the Ricci scalar for which the WEC is not violated near the throat, and corresponding functions are calculated for several models. The approach here differs from the one that has been common since no additional assumptions to simplify the equations have been made, and the functions in f(R) models are not considered to be arbitrary functions, but rather a feature of the theory that has to be evaluated on the basis of consistency with observations for the Solar System and cosmological evolution. Therefore in this work we show that the existence of wormholes without exotic matter is not only possible in simple arbitrary f(R) models, but also in models that are in accordance with empirical data. (orig.)

  12. Proceedings of the 5. biennial international pipeline conference, IPC 2004 : the power of technology

    International Nuclear Information System (INIS)

    Paulson, K.; Kraft, H.; Hopkins, P.

    2004-01-01

    The fifth international pipeline conference provided a forum for experts in the pipeline industry, academia and governments to discuss new technologies and approaches to pipeline transport. Presentations focused on a wide range of issues related to pipeline engineering. The conference was divided into 16 main sessions: (1) compression and pump technologies, (2) corrosion protection and analysis techniques, (3) pipeline design and construction, (4) environmental issues, (5) database development, (6) emerging issues and innovative projects, (7) inspection techniques, (8) integrity management, (9) joining, (10) materials, (11) offshore issues, (12) operations and maintenance, (13) pipeline automation and measurement, (14) pipelining in northern environments, (15) risk and reliability, (16) standards and regulations. The presentations provided up-to-date information related to future technology trends as well as recent innovations and practices. Pipeline design standards and new pipeline materials using high strength steels and reinforced composite plastic coatings were also reviewed. Other sessions discussed emerging technologies for inspection, quality control, ultrasonic testing, and the use of remote sensors. The conference also included a student paper competition. A total of 339 peer reviewed presentations were given at the conference, all of which were indexed separately for inclusion in this database. refs., tabs., fig.

  13. 49 CFR 192.513 - Test requirements for plastic pipelines.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Test requirements for plastic pipelines. 192.513 Section 192.513 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND... Test requirements for plastic pipelines. (a) Each segment of a plastic pipeline must be tested in...

  14. Peripheral metabolism of (R)-[11C]verapamil in epilepsy patients

    International Nuclear Information System (INIS)

    Abrahim, Aiman; Langer, Oliver; Luurtsema, Gert; Lubberink, Mark; Lammertsma, Adriaan A.; Bauer, Martin; Joukhadar, Christian; Mueller, Markus; Karch, Rudolf; Pataraia, Ekaterina; Baumgartner, Christoph; Kletter, Kurt

    2008-01-01

    (R)-[ 11 C]verapamil is a new PET tracer for P-glycoprotein-mediated transport at the blood-brain barrier. For kinetic analysis of (R)-[ 11 C]verapamil PET data the measurement of a metabolite-corrected arterial input function is required. The aim of this study was to assess peripheral (R)-[ 11 C]verapamil metabolism in patients with temporal lobe epilepsy and compare these data with previously reported data from healthy volunteers. Arterial blood samples were collected from eight patients undergoing (R)-[ 11 C]verapamil PET and selected samples were analysed for radiolabelled metabolites of (R)-[ 11 C]verapamil by using an assay that measures polar N-demethylation metabolites by solid-phase extraction and lipophilic N-dealkylation metabolites by HPLC. Peripheral metabolism of (R)-[ 11 C]verapamil was significantly faster in patients compared to healthy volunteers (AUC of (R)-[ 11 C]verapamil fraction in plasma: 29.4 ± 3.9 min for patients versus 40.8 ± 5.0 min for healthy volunteers; p 11 C]verapamil plasma concentrations (AUC of (R)-[ 11 C]verapamil concentration, normalised to injected dose per body weight: 25.5 ± 2.1 min for patients and 30.5 ± 5.9 min for healthy volunteers; p = 0.038). Faster metabolism appeared to be mainly due to increased N-demethylation as the polar [ 11 C]metabolite fraction was up to two-fold greater in patients. Faster metabolism of (R)-[ 11 C]verapamil in epilepsy patients may be caused by hepatic cytochrome P450 enzyme induction by antiepileptic drugs. Based on these data caution is warranted when using an averaged arterial input function derived from healthy volunteers for the analysis of patient data. Moreover, our data illustrate how antiepileptic drugs may decrease serum levels of concomitant medication, which may eventually lead to a loss of therapeutic efficacy. (orig.)

  15. Natural gas transport with the aid of pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Volk, A

    1978-01-01

    After giving a brief explanation on the term natural gas and the chemical composition of natural gases of different origin, the natural gas supply in the FRG and in Western Europe is discussed. Other discussions are included on: (1) planning, construction, and operation of the pipelines; (2) the equipment for pressure increase and the telecommunication equipment which are urgently necessary for gas transport through pipelines; (3) the problem of safety both in connection with the supply and protection of man and material; and (4) problems of profitability of natural gas transport through pipelines.

  16. rTMS of the dorsomedial prefrontal cortex for major depression: safety, tolerability, effectiveness, and outcome predictors for 10 Hz versus intermittent theta-burst stimulation.

    Science.gov (United States)

    Bakker, Nathan; Shahab, Saba; Giacobbe, Peter; Blumberger, Daniel M; Daskalakis, Zafiris J; Kennedy, Sidney H; Downar, Jonathan

    2015-01-01

    Conventional rTMS protocols for major depression commonly employ stimulation sessions lasting >30 min. However, recent studies have sought to improve costs, capacities, and outcomes by employing briefer protocols such as theta burst stimulation (iTBS). To compare safety, effectiveness, and outcome predictors for DMPFC-rTMS with 10 Hz (30 min) versus iTBS (6 min) protocols, in a large, naturalistic, retrospective case series. A chart review identified 185 patients with a medication-resistant major depressive episode who underwent 20-30 sessions of DMPFC-rTMS (10 Hz, n = 98; iTBS, n = 87) at a single Canadian clinic from 2011 to 2014. Clinical characteristics of 10 Hz and iTBS patients did not differ prior to treatment, aside from significantly higher age in iTBS patients. A total 7912 runs of DMPFC-rTMS (10 Hz, 4274; iTBS, 3638) were administered, without any seizures or other serious adverse events, and no significant differences in rates of premature discontinuation between groups. Dichotomous outcomes did not differ significantly between groups (Response/remission rates: Beck Depression Inventory-II: 10 Hz, 40.6%/29.2%; iTBS, 43.0%/31.0%. 17-item Hamilton Rating Scale for Depression: 10 Hz, 50.6%/38.5%; iTBS, 48.5%/27.9%). On continuous outcomes, there was no significant difference between groups in pre-treatment or post-treatment scores, or percent improvement on either measure. Mixed-effects modeling revealed no significant group-by-time interaction on either measure. Both 10 Hz and iTBS DMPFC-rTMS appear safe and tolerable at 120% resting motor threshold. The effectiveness of 6 min iTBS and 30 min 10 Hz protocols appears comparable. Randomized trials comparing 10 Hz to iTBS may be warranted. Copyright © 2015 The Authors. Published by Elsevier Inc. All rights reserved.

  17. 75 FR 47602 - Clinical Studies of Safety and Effectiveness of Orphan Products Research Project Grant (R01)

    Science.gov (United States)

    2010-08-06

    ...] Clinical Studies of Safety and Effectiveness of Orphan Products Research Project Grant (R01) AGENCY: Food... (OPD) grant program. The goal of FDA's OPD grant program is to support the clinical development of... product will be superior to the existing therapy. FDA provides grants for clinical studies on safety and...

  18. Model error assessment of burst capacity models for energy pipelines containing surface cracks

    International Nuclear Information System (INIS)

    Yan, Zijian; Zhang, Shenwei; Zhou, Wenxing

    2014-01-01

    This paper develops the probabilistic characteristics of the model errors associated with five well-known burst capacity models/methodologies for pipelines containing longitudinally-oriented external surface cracks, namely the Battelle and CorLAS™ models as well as the failure assessment diagram (FAD) methodologies recommended in the BS 7910 (2005), API RP579 (2007) and R6 (Rev 4, Amendment 10). A total of 112 full-scale burst test data for cracked pipes subjected internal pressure only were collected from the literature. The model error for a given burst capacity model is evaluated based on the ratios of the test to predicted burst pressures for the collected data. Analysis results suggest that the CorLAS™ model is the most accurate model among the five models considered and the Battelle, BS 7910, API RP579 and R6 models are in general conservative; furthermore, the API RP579 and R6 models are markedly more accurate than the Battelle and BS 7910 models. The results will facilitate the development of reliability-based structural integrity management of pipelines. - Highlights: • Model errors for five burst capacity models for pipelines containing surface cracks are characterized. • Basic statistics of the model errors are obtained based on test-to-predicted ratios. • Results will facilitate reliability-based design and assessment of energy pipelines

  19. Optimal inspection planning for onshore pipelines subject to external corrosion

    International Nuclear Information System (INIS)

    Gomes, Wellison J.S.; Beck, André T.; Haukaas, Terje

    2013-01-01

    Continuous operation of pipeline systems involves significant expenditures in inspection and maintenance activities. The cost-effective safety management of such systems involves allocating the optimal amount of resources to inspection and maintenance activities, in order to control risks (expected costs of failure). In this context, this article addresses the optimal inspection planning for onshore pipelines subject to external corrosion. The investigation addresses a challenging problem of practical relevance, and strives for using the best available models to describe random corrosion growth and the relevant limit state functions. A single pipeline segment is considered in this paper. Expected numbers of failures and repairs are evaluated by Monte Carlo sampling, and a novel procedure is employed to evaluate sensitivities of the objective function with respect to design parameters. This procedure is shown to be accurate and more efficient than finite differences. The optimum inspection interval is found for an example problem, and the robustness of this optimum to the assumed inspection and failure costs is investigated. It is shown that optimum total expected costs found herein are not highly sensitive to the assumed costs of inspection and failure. -- Highlights: • Inspection, repair and failure costs of pipeline systems considered. • Optimum inspection schedule (OIS) obtained by minimizing total expected life-cycle costs. • Robustness of OIS evaluated w.r.t. estimated costs of inspection and failure. • Accurate non-conservative models of corrosion growth employed

  20. Alternate current interference in pipeline; Interferencia por corrente alternada em dutos

    Energy Technology Data Exchange (ETDEWEB)

    Oliver, Joao Hipolito de Lima [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil)

    2003-07-01

    This paper regards to the concerning that the pipeline operators should take in to account to better understand and control the alternate current interference (AC- interference). Pipelines sharing rights-of-way with AC high voltage power lines are subjected to AC interference that can cause risk for personnel, operational safety and environment. The AC-interference shall be evaluated, in such way that mitigating action can be applied in order to assure the pipeline is operated in a safety way. The AC-interference evaluation should take in to account the pipeline and the electrical generation/transmission design data. Three approaches are considered: the coating integrity, the personnel chock hazards and the pipeline integrity. The coating integrity is affected by the possibility of high-voltage be induced on the pipeline during power line current fault. The operation and maintenance personnel can be prone to chock hazards (touch voltage and step voltage), depending upon the level of the induced voltage on the pipeline and the ground current. An induced voltage evaluation is then necessary to identify AC potentials in pipeline higher than the safe criteria. The pipeline integrity is concerning to the possibility of occurring alternate current corrosion (AC-corrosion) on the pipe wall. This kind of corrosion is still been investigated, and although it is less critical than the direct current corrosion, it can happen in specific situation. Parameters that affect AC-corrosion are discussed in this paper. Finely it is presented a brief guide to evaluate the possibility of occurring AC- interference in a pipeline and a mitigation measures summary. (author)

  1. Surface structure determination of group 11 metals adsorbed on a rhenium(10 anti 10) surface by low-energy electron diffraction

    Energy Technology Data Exchange (ETDEWEB)

    Messahel, Lyria

    2012-11-12

    This thesis deals with the computational surface determination of various long-range ordered phases formed by thin films of copper, silver, and gold adsorbed on the rhenium- (10 anti 10) surface. It is based upon LEED-I,V curves for these phases that were recorded in the course of detailed experimental investigations of the respective films carried out in our group (using techniques such as LEED, MEED, and TPD). In order to solve the intricate puzzle of surface structural analysis, the electron elastic scattering behaviour of the investigated coinage metal phases was calculated using the Erlangen TensErLEED program package. Thereby first a set of theoretical LEED-I,V curves is derived for a guessed reference structure. Subsequently its structural input parameters are varied in a trial-and-error procedure until optimal agreement between experiment and theory is attained. The (1 x 1) phases formed by the deposited metals were tackled first to establish an absolute coverage calibration and to elucidate the respective growth modes on the Re(10 anti 10) surface. In all three cases the (1 x 1) structure is developed best at a coverage {Theta}{sub Cu,Ag,Au}=2 ML=1 BL. Extension of the investigation to experimental I,V curves for higher Cu coverages revealed that this element continues to grow bilayerwise, thereby retaining the Re hcp morphology. Ag, in contrast to Cu and Au, happens not to grow as homogeneously, and the TPD data suggest that Ag films exhibit the so-called simultaneous-multilayer (SM) growth mode. The following analysis of the sub-bilayer coverage range shows that the three systems exhibit considerable differences. While Cu, having a negative lattice misfit compared to Re, shows no long-range ordered superstructures, Ag and Au with a similar positive misfit form a couple of such phases. Ag features both a (1 x 4) phase, stable at ambient temperatures, that upon heating transforms into a c(2 x 2) phase that only exists at elevated temperatures. The

  2. 76 FR 33639 - Safety Zone; New York Water Taxi 10th Anniversary Fireworks

    Science.gov (United States)

    2011-06-09

    ...-AA00 Safety Zone; New York Water Taxi 10th Anniversary Fireworks, Upper New York Bay, Red Hook, NY... New York Water Taxi. The fireworks will commence at 9 p.m. on June 21, 2011 and will last... CFR Part 165 Harbors, Marine safety, Navigation (water), Reporting and recordkeeping requirements...

  3. Efficiency improvements in pipeline transportation systems. Technical report, Task 3

    Energy Technology Data Exchange (ETDEWEB)

    Banks, W. F.; Horton, J. H.

    1977-01-01

    This report identifies those potential energy-conservative pipeline innovations that are most energy- and cost-effective, and formulates recommendations for the R, D, and D programs needed to exploit those opportunities. From a candidate field of over twenty classes of efficiency improvements, eight systems are recommended for pursuit. Most of these possess two highly important attributes: large potential energy savings and broad applicability outside the pipeline industry. The R, D, and D program for each improvement and the recommended immediate next step are described. The eight programs recommended for pursuit are: gas-fired combined-cycle compressor station; internally cooled internal combustion engine; methanol-coal slurry pipeline; methanol-coal slurry-fired and coal-fired engines; indirect-fired coal-burning combined-cycle pump station; fuel-cycle pump station; internal coatings in pipelines; and drag-reducing additives in liquid pipelines.

  4. Study of lambda production in Au+Au collisions at 11.5 GeV/c per nucleon

    International Nuclear Information System (INIS)

    Qi, Yujin

    2000-01-01

    Lambda production in central Au+Au collisions at 11.5 A·GeV/c has been studied at forward rapidities (y > 2.2) using the upgraded E877 experimental setup at the AGS. Lambdas are measured via the charged decay channel: Λ →pπ - and identified from the pπ - invariant mass spectra with the aids of a set of pair cuts. A comprehensive Monte Carlo simulation is made to extensively study the lambda reconstruction. The details of the data analysis for lambda identification are presented. The consistence of data analysis is examined by detailed comparison of the constructed proton and pion spectra with the previous results from the E877 1993 data set. The double differential multiplicities for lambda as a function of collision centrality are presented. Lambda rapidity distribution dN/dy is also studied. A pure thermal model is used to characterize the lambda spectra. The experimental results are compared to the predictions of the RQMD model (v2.3) in its cascade version and in the mode that takes into account the effect of mean-field. We also present the first measurement of the lambda directed flow at the AGS. In spite of limited statistics, a strong positive directed flow for lambda, which is comparable to the amplitude of the proton flow, is observed at forward rapidities (2.8 t , v 1 (p t ), is in agreement with the predictions of the RQMD model. (author)

  5. Apprentissages techniques : L'apprentissage au CERN

    CERN Multimedia

    2004-01-01

    APPRENTISSAGES TECHNIQUES GESTION ET DEVELOPPEMENT DU PERSONNEL HR/PMD L'APPRENTISSAGE AU CERN pour les professions d'électronicien(ne) et de laborantin(e) en physique L'apprentissage au CERN est régi par les lois, règlements et contrats en vigueur dans le Canton de Genève. En cas de réussite à l'examen de fin d'apprentissage, les apprentis obtiennent le Certificat Fédéral de Capacité Suisse (CFC). 7 places au total sont ouvertes au recrutement pour les deux professions. L'apprentissage dure 4 ans. Minima requis pour faire acte de candidature : • avoir au moins 15 ans et moins de 21 ans à la date de début de l'apprentissage • avoir terminé la scolarité obligatoire, au minimum 9ème du Cycle d'orientation genevois (3ème en France) • être ressortissant d'un pays membre du CERN (Allemagne, Autriche, Belgiqu...

  6. Condition Monitoring Of Operating Pipelines With Operational Modal Analysis Application

    OpenAIRE

    Mironov Aleksey; Doronkin Pavel; Priklonsky Aleksander; Kabashkin Igor

    2015-01-01

    In the petroleum, natural gas and petrochemical industries, great attention is being paid to safety, reliability and maintainability of equipment. There are a number of technologies to monitor, control, and maintain gas, oil, water, and sewer pipelines. The paper focuses on operational modal analysis (OMA) application for condition monitoring of operating pipelines. Special focus is on the topicality of OMA for definition of the dynamic features of the pipeline (frequencies and mode shapes) i...

  7. Research on prognostics and health management of underground pipeline

    Science.gov (United States)

    Zhang, Guangdi; Yang, Meng; Yang, Fan; Ni, Na

    2018-04-01

    With the development of the city, the construction of the underground pipeline is more and more complex, which has relation to the safety and normal operation of the city, known as "the lifeline of the city". First of all, this paper introduces the principle of PHM (Prognostics and Health Management) technology, then proposed for fault diagnosis, prognostics and health management in view of underground pipeline, make a diagnosis and prognostics for the faults appearing in the operation of the underground pipeline, and then make a health assessment of the whole underground pipe network in order to ensure the operation of the pipeline safely. Finally, summarize and prospect the future research direction.

  8. Etude séro-épidémiologique de la leishmaniose canine au centre du Maroc

    Science.gov (United States)

    Fellah, Hajiba; Doughmi, Oursula; Maniar, Saâd; Lalami, Abdelhakim El Ouali

    2014-01-01

    Dans le monde, la leishmaniose viscérale humaine est connue pour avoir comme principale source d'infection les Canidés domestiques et sauvages. Au centre du Maroc, les données épidémiologiques, cliniques et parasitologiques sur la leishmaniose canine, sont quasiment inexistantes. Ce travail traite une étude prospective au cours de laquelle 61 sérums canins ont été analysés par un test rapide et par l'immunofluorescence indirecte. La sensibilité du test rapide par rapport à celle de l'immunofluorescence indirecte (IFI) est de 33,33%. La fréquence de la maladie chez les chiens s’élève à 9,83% (Test Rapide) et 24,59% (IFI). 73,33% des cas canins positifs à la sérologie sont asymptomatiques. Ce sont les jeunes chiens de moins de 5 ans qui sont les plus fréquemment atteints avec une sensibilité de la race Berger Allmand à l'infection. Cette étude a permis de mettre en évidence la présence de chiens leishmaniens (15 chiens séropositifs parmi 61) et de prouver l'existence du réservoir canin. Une stratégie de prévention active doit être mise en place. PMID:25852791

  9. Oracle JDeveloper 11gR2 Cookbook

    CERN Document Server

    Haralabidis, Nick

    2012-01-01

    "Oracle JDeveloper 11gR2 Cookbook" is a practical cookbook which goes beyond the basics with immediately applicable recipes for building ADF applications at an intermediate-to-advanced level. If you are a JavaEE developer who wants to go beyond the basics of building ADF applications with Oracle JDeveloper 11gR2 and get hands on with practical recipes, this book is for you. You should be comfortable with general Java development principles, the JDeveloper IDE, and ADF basics

  10. ACOUSTIC LOCATION OF LEAKS IN PRESSURIZED UNDER- GROUND PETROLEUM PIPELINES

    Science.gov (United States)

    Experiments were conducted at the Underground Storage Tank (UST) Test Apparatus Pipeline in which three acoustic sensors separated by a maximum distance of 38.1 m (125 ft) were used to monitor signals produced by 11.4-, 5.7-, and 3.8-L/h (3.0-, 1.5-, and 1.0-gal/h) leaks in th...

  11. Synthesis of nir-sensitive Au-Au{sub 2}S nanocolloids for drug delivery

    Energy Technology Data Exchange (ETDEWEB)

    Ren, L.; Chow, G.M

    2003-01-15

    Near IR (NIR) sensitive Au-Au{sub 2}S nanocolloids were prepared by mixing HAuCl{sub 4} and Na{sub 2}S in aqueous solutions. An anti-tumor drug, cis-platin, was adsorbed onto Au-Au{sub 2}S nanoparticle surface via the 11-mercaptoundecanoic acid (MUA) layers. The results show that the degree of adsorption of cis-platin onto Au-Au{sub 2}S nanoparticles was controlled by the solution pH value, and the drug release was sensitive to near-infrared irradiation. The cis-platin-loaded Au-Au{sub 2}S nanocolloids can be potentially applied as NIR activated drug delivery carrier.

  12. 75 FR 36376 - Natural Gas Pipeline Company of America LLC; Notice of Application

    Science.gov (United States)

    2010-06-25

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. CP10-452-000] Natural Gas..., Natural Gas Pipeline Company of America LLC (Natural), 3250 Lacey Road, 7th Floor, Downers Grove, Illinois 60515-7918, filed in Docket Number CP10-452-000, pursuant to sections 7(b) and 7(c) of the Natural Gas...

  13. Voyager observations of solar wind proton temperature - 1-10 AU

    Science.gov (United States)

    Gazis, P. R.; Lazarus, A. J.

    1982-01-01

    Simultaneous measurements are made of the solar wind proton temperatures by the Voyager 1 and 2 spacecraft, far from earth, and the IMP 8 spacecraft in earth orbit. This technique permits a separation of radial and temporal variations of solar wind parameters. The average value of the proton temperature between 1 and 9 AU is observed to decrease as r (the heliocentric radius) to the -(0.7 + or - 0.2). This is slower than would be expected for adiabatic expansion. A detailed examination of the solar wind stream structure shows that considerable heating occurs at the interface between high and low speed streams.

  14. 77 FR 21763 - Explorer Pipeline Company; Notice of Petition for Declaratory Order

    Science.gov (United States)

    2012-04-11

    ... pipeline extension project (Diluent Extension Project). The Diluent Extension Project involves the construction of a new pipeline segment from Peotone, Illinois to Manhattan, Illinois, where Explorer's pipeline system will interconnect with Enbridge's Southern Lights pipeline. This extension project will offer a...

  15. Analyse de régression quantile de la relation entre la langue et l’intervalle entre les grossesses au Québec (Canada

    Directory of Open Access Journals (Sweden)

    Nathalie Auger

    2018-01-01

    Full Text Available Introduction. On sait que les intervalles courts comme les intervalles longs entre les grossesses sont associés à des issues périnatales défavorables, comme des fausses couches et des accouchements prématurés, mais les différences culturelles à ce sujet sont mal connues. Repérer les inégalités culturelles dans les intervalles entre les grossesses est nécessaire afin d'améliorer les résultats relatifs à la santé de la mère et de l’enfant. Nous avons ainsi évalué les intervalles entre les grossesses chez les anglophones et les francophones du Québec. Méthodologie. Nous avons obtenu les dossiers de naissance de tous les enfants nés au Québec entre 1989 et 2011. Nous avons recensé 571 461 femmes ayant eu au moins deux naissances et déterminé l’intervalle entre leurs grossesses. Les intervalles courts entre les grossesses (moins de 18 mois ont été définis comme étant le 20e percentile de la distribution, et les intervalles longs (60 mois ou plus, comme le 80e percentile. À l’aide de régressions quantiles, nous avons évalué l’association entre la langue et les intervalles courts et longs, ajustés en fonction des caractéristiques de la mère. Nous avons évalué les différences au fil du temps et selon l’âge de la mère pour les groupes défavorisés, qui ont été définis par l’absence de diplôme d’études secondaires, la résidence en milieu rural et le fait de vivre dans un quartier défavorisé matériellement. Résultats. Dans les modèles de régression ajustés, les anglophones sans diplôme d’études secondaires avaient des intervalles plus courts de 1,0 mois (intervalle de confiance [IC] à 95 % : −1,5 à −0,4 par rapport à leurs homologues francophones au 20e percentile de la distribution et plus longs de 1,9 mois (−0,5 à 4,3 au 80e percentile. Les résultats étaient similaires pour les anglophones des régions rurales et des quartiers matériellement défavorisés. Les

  16. GASVOL 18'' gas pipeline - risk based inspection study

    Energy Technology Data Exchange (ETDEWEB)

    Bjoernoey, Ola H.; Etterdal, Birger A. [Det Norske Veritas (DNV), Oslo (Norway); Guarize, Rosimar; Oliveira, Luiz F.S. [Det Norske Veritas (DNV) (Brazil); Faertes, Denise; Dias, Ricardo [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil)

    2003-07-01

    This paper describes a risk based approach and inspection planning as part of the Pipeline Integrity Management (PIM) system for the 95.5 km long 18'' GASVOL gas pipeline in the South eastern region of Brazil transporting circa 5 000 000 m3 dry gas per day. Pipeline systems can be subject to several degradation mechanisms and inspection and monitoring are used to ensure system integrity. Modern pipeline regulations and codes are normally based on a core safety or risk philosophy. The detailed design requirements presented in design codes are practical interpretations established so as to fulfill these core objectives. A given pipeline, designed, constructed and installed according to a pipeline code is therefore the realization of a structure, which, along its whole length, meets the applicable safety objectives of that code. The main objective of Pipeline Integrity Management (PIM) is to control and document the integrity of the pipeline for its whole service life, and to do this in a cost-effective manner. DNV has a specific approach to RBI planning, starting with an initial qualitative assessment where pipelines and damage type are ranked according to risk and potential risk reduction by an inspection and then carried forward to a quantitative detailed assessment where the level of complexity and accuracy can vary based on availability of information and owner needs. Detailed assessment requires significant effort in data gathering. The findings are dependent upon the accuracy of the inspection data, and on DNV's interpretation of the pipeline reference system and simplifications in the inspection data reported. The following specific failure mechanisms were investigated: internal corrosion, external corrosion, third party interference, landslides and black powder. RBI planning, in general words, is a 'living process'. In order to optimize future inspections, it is essential that the analyses utilize the most recent information regarding

  17. Development of Protective Coatings for Co-Sequestration Processes and Pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Bierwagen, Gordon; Huang, Yaping

    2011-11-30

    The program, entitled Development of Protective Coatings for Co-Sequestration Processes and Pipelines, examined the sensitivity of existing coating systems to supercritical carbon dioxide (SCCO2) exposure and developed new coating system to protect pipelines from their corrosion under SCCO2 exposure. A literature review was also conducted regarding pipeline corrosion sensors to monitor pipes used in handling co-sequestration fluids. Research was to ensure safety and reliability for a pipeline involving transport of SCCO2 from the power plant to the sequestration site to mitigate the greenhouse gas effect. Results showed that one commercial coating and one designed formulation can both be supplied as potential candidates for internal pipeline coating to transport SCCO2.

  18. Analysis of underground concrete pipelines subjected to seismic high-frequency loads

    OpenAIRE

    Abbasiverki, Roghayeh

    2016-01-01

    Buried pipelines are tubular structures that are used for transportation of important liquid materials and gas in order to provide safety for human life. During an earthquake, imposed loads from soil deformations on concrete pipelines may cause severe damages, possibly causing disturbance in vital systems, such as cooling of nuclear power facilities. The high level of safety has caused a demand for reliable seismic analyses, also for structures built in the regions that have not traditionally...

  19. In-plane and out-of-plane emission of nuclear matter in Au+Au collisions

    International Nuclear Information System (INIS)

    Bastid, N.; Dupieux, P.; Ramillien, V.; Alard, J.P.; Amouroux, V.; Berger, L.; Boussange, S.; Fraysse, L.; Ibnouzahir, M.; Montarou, G.

    1995-01-01

    Collective flow effects in Au (E/A = 150 to 800 MeV) on Au collisions measured with the phase I setup of the FOPI detector at GSI - Darmstadt are presented. Directed side ward flow is studied, by the mean transverse momentum in the reaction plane x (y)>, without reaction plane reconstruction. A more quantitative measurement of the global amount of directed side ward flow is also made and some comparisons with the predictions of different QMD versions are given. Experimental results concerning the preferential emission of particles in a direction perpendicular to the reaction plane are also presented. Azimuthal distributions of fragments around the beam axis, with respect to the reaction plane are studied in the mid-rapidity region and the associated R N (out-of-plane/in-plane ratios) are extracted. The dependence of R N upon transverse momentum, centrality, fragment charge and bombarding energy is studied. (authors). 24 refs., 10 figs., 1 tab

  20. Sequential and double sequential fission observed in heavy ion interaction of (11.67 MeV/u){sup 197}Au projectile with {sup 197}Au target

    Energy Technology Data Exchange (ETDEWEB)

    Nasir, Tabassum [Gomal University, Dera Ismail Khan (Pakistan). Dept. of Physics; Khan, Ehsan Ullah [COMSATS Institute of Information Technology (CIIT), Islamabad (Pakistan). Dept. of Physics; Baluch, Javaid Jahan [COMSATS Institute of Information Technology (CIIT), Abbottabad, (Pakistan). Dept. of Environmental Sciences; Shafi-Ur-Rehman, [PAEC, Dera Ghazi Khan (Pakistan). ISL Project; Matiullah, [PINSTECH, Nilore, Islamabad (Pakistan). Physics Div.; Rafique, Muhammad [University of Azad Jammu and Kashmir, Muzaffarabad (Pakistan). Dept. of Physics

    2009-09-15

    The heavy ion interaction of 11.67 MeV/u {sup 197}Au+ {sup 197}Au has been investigated using mica as a passive detector. By employing Solid State Nuclear Track Detection Technique the data of elastic scattering as well as inelastic reaction channel was collected. The off-line data analysis of multi-pronged events was performed by measuring the three-dimensional geometrical coordinates of correlated tracks on event-by-event basis. Multi pronged events observed in this reaction were due to sequential and double sequential fission. Using a computer code PRONGY based on the procedure of internal calibration, it was possible to derive quantities like mass transfer, total kinetic energy loss and scattering angles. (author)

  1. SPITZER OBSERVATIONS OF COMET 67P/CHURYUMOV-GERASIMENKO AT 5.5-4.3 AU FROM THE SUN

    International Nuclear Information System (INIS)

    Kelley, Michael S.; Wooden, Diane H.; Tubiana, Cecilia; Boehnhardt, Hermann; Woodward, Charles E.; Harker, David E.

    2009-01-01

    We report Spitzer Space Telescope observations of comet 67P/Churyumov-Gerasimenko at 5.5 and 4.3 AU from the Sun, post-aphelion. Comet 67P is the primary target of the European Space Agency's Rosetta mission. The Rosetta spacecraft will rendezvous with the nucleus at heliocentric distances similar to our observations. Rotationally resolved observations at 8 and 24 μm (at a heliocentric distance, r h , of 4.8 AU) that sample the size and color-temperature of the nucleus are combined with aphelion R-band light curves observed at the Very Large Telescope (VLT) and yield a mean effective radius of 2.04 ± 0.11 km, and an R-band geometric albedo of 0.054 ± 0.006. The amplitudes of the R-band and mid-infrared light curves agree, which suggests that the variability is dominated by the shape of the nucleus. We also detect the dust trail of the comet at 4.8 and 5.5 AU, constrain the grain sizes to be ∼ h = 4 AU in 2014.

  2. Physical and numerical modeling of hydrophysical proceses on the site of underwater pipelines

    Science.gov (United States)

    Garmakova, M. E.; Degtyarev, V. V.; Fedorova, N. N.; Shlychkov, V. A.

    2018-03-01

    The paper outlines issues related to ensuring the exploitation safety of underwater pipelines that are at risk of accidents. The performed research is based on physical and mathematical modeling of local bottom erosion in the area of pipeline location. The experimental studies were performed on the basis of the Hydraulics Laboratory of the Department of Hydraulic Engineering Construction, Safety and Ecology of NSUACE (Sibstrin). In the course of physical experiments it was revealed that the intensity of the bottom soil reforming depends on the deepening of the pipeline. The ANSYS software has been used for numerical modeling. The process of erosion of the sandy bottom was modeled under the pipeline. Comparison of computational results at various mass flow rates was made.

  3. Pipeline investigation report : crude oil pipeline-third party damage : Trans Mountain Pipeline LP 610 millimetre-diameter crude oil pipeline : kilometre post 3.10, Westridge dock transfer line, Burnaby, British Columbia

    International Nuclear Information System (INIS)

    2009-03-01

    This report discussed an oil spill which occurred in July 2007 when a contractor's excavator bucket punctured a pipeline during the excavation of a trench for a new storm sewer line at a location in Burnaby, British Columbia (BC). The puncture caused the release of approximately 234 cubic meters of crude oil, which flowed into Burrard Inlet Bay via a storm sewer system. Eleven houses were sprayed with crude oil, and many other properties required restoration. Approximately 250 residents left their homes. While emergency workers and firefighters responding to the incident were sprayed with crude oil, no explosions, fires, or injuries occurred. The report provided details of studies conducted to determine the placement of the sewer line, as well as attempts made by the contractors to determine the lateral connection of the crude oil pipeline. Discrepancies between the location of the pipeline design drawing and its actual location on other construction drawings were also noted by the contractor. Twenty-four minutes after the rupture, the terminal was fully isolated and the drain-down of the pipeline was completed within an hour. The cause of the accident was attributed to inaccurate construction drawings and inadequate communications between contractors and consulting companies. 3 figs

  4. Les pneumopathies nosocomiales en réanimation de CHU Hassan II de Fès

    Science.gov (United States)

    Shimi, Abdelkarim; Touzani, Soumaya; Elbakouri, Nabil; Bechri, Brahim; Derkaoui, Ali; Khatouf, Mohammed

    2015-01-01

    L'objectif principal de notre étude était d'identifier les bactéries incriminées dans la pneumopathie nosocomiale (PN) au service de réanimation A1 du CHU Hassan II de Fès, en vue d'en améliorer la prise en charge et de diminuer la morbi-mortalité associée. Il s'agit d'une étude rétrospective et descriptive, menée du 1er janvier 2012 au 31 décembre 2013. Seules les infections pulmonaires survenant au-delà de 48 heures de l'admission du patient au service de réanimation ont été incluses. L'incidence de la PN était de 11,2%. Les Bacilles à Gram négatif (BGN) étaient retrouvés dans 48,5% des cas, le Staphylocoque Aureus dans 21,21% des cas et le Klebsiella Pneumoniae était dans 10,7% des cas. Le taux de mortalité était de 48,33%. L’âge, la gravité de la pathologie sous jacente et le retard de l'instauration d'une antibiothérapie adaptée étaient considérées comme facteurs de mauvais pronostic. L’étude de la résistance aux antibiotiques, montre une multirésistance surtout pour les BGN, dont il faut tenir compte en mettant en place une stratégie de prévention active. PMID:26966481

  5. Virtual Instrumentation Corrosion Controller for Natural Gas Pipelines

    Science.gov (United States)

    Gopalakrishnan, J.; Agnihotri, G.; Deshpande, D. M.

    2012-12-01

    Corrosion is an electrochemical process. Corrosion in natural gas (methane) pipelines leads to leakages. Corrosion occurs when anode and cathode are connected through electrolyte. Rate of corrosion in metallic pipeline can be controlled by impressing current to it and thereby making it to act as cathode of corrosion cell. Technologically advanced and energy efficient corrosion controller is required to protect natural gas pipelines. Proposed virtual instrumentation (VI) based corrosion controller precisely controls the external corrosion in underground metallic pipelines, enhances its life and ensures safety. Designing and development of proportional-integral-differential (PID) corrosion controller using VI (LabVIEW) is carried out. When the designed controller is deployed at field, it maintains the pipe to soil potential (PSP) within safe operating limit and not entering into over/under protection zone. Horizontal deployment of this technique can be done to protect all metallic structure, oil pipelines, which need corrosion protection.

  6. Semiconducting La{sub 2}AuP{sub 3}, the metallic conductor Ce{sub 2}AuP{sub 3}, and other rare-earth gold phosphides Ln{sub 2}AuP{sub 3} with two closely related crystal structures

    Energy Technology Data Exchange (ETDEWEB)

    Eschen, M.; Kotzyba, G.; Kuennen, B.; Jeitschko, W. [Anorganisch-Chemisches Inst. der Westfaelischen Wilhelms-Univ., Muenster (Germany)

    2001-07-01

    The compounds Ln{sub 2}AuP{sub 3} were synthesized by reaction of the elemental components in evacuated silica tubes. Their crystal structures were determined from single-crystal diffractometer data. The compounds with Ln = La, Ce, and Pr crystallize with an orthorhombic U{sub 2}NiC{sub 3} type structure (Pnma, Z = 4). The structure refinement for Ce{sub 2}AuP{sub 3} resulted in a = 774.14(6) pm, b = 421.11(4) pm, c = 1612.3(1) pm, R = 0.019 for 1410 structure factors and 38 variable parameters. For Pr{sub 2}AuP{sub 3} a residual of R = 0.024 was obtained. Nd{sub 2}AuP{sub 3} crystallizes with a monoclinic distortion of this structure: P2{sub 1}/c, Z = 4, a = 416.14(4) pm, b = 768.87(6) pm, c = 1647.1(2) pm, {beta} = 104.06(1) , R = 0.022 for 1361 F values and 56 variables. The near-neighbor coordinations of the two structures are nearly the same. In both structures the gold and phosphorus atoms form two-dimensionally infinite nets, where the gold atoms are tetrahedrally coordinated by phosphorus atoms with Au-P distances varying between 245.8 and 284.2 pm. Two thirds of the phosphorus atoms form pairs with single-bond distances varying between 217.7 and 218.9 pm. Thus, using oxidation numbers the structures can be rationalized with the formulas (Ln{sup +3}){sub 2}[AuP{sub 3}]{sup -6} and (Ln{sup +3}){sub 2}Au{sup +1}(P{sub 2}){sup -4}P{sup -3}. Accordingly, La{sub 2}AuP{sub 3} is a diamagnetic semiconductor. Pr{sub 2}AuP{sub 3} is semi-conducting with an antiferromagnetic ground state, showing metamagnetism with a critical field of B{sub c} = 0.5({+-}0.1) T. In contrast, the cerium compound is a metallic conductor, even though its cell volume indicates that the cerium atoms are essentially trivalent, as is also suggested by the ferro- or ferrimagnetic behavior of the compound. (orig.)

  7. Synthesis of Au38(SCH2CH2Ph)24, Au36(SPh-tBu)24, and Au30(S-tBu)18 Nanomolecules from a Common Precursor Mixture.

    Science.gov (United States)

    Rambukwella, Milan; Dass, Amala

    2017-10-17

    Phenylethanethiol protected nanomolecules such as Au 25 , Au 38 , and Au 144 are widely studied by a broad range of scientists in the community, owing primarily to the availability of simple synthetic protocols. However, synthetic methods are not available for other ligands, such as aromatic thiol and bulky ligands, impeding progress. Here we report the facile synthesis of three distinct nanomolecules, Au 38 (SCH 2 CH 2 Ph) 24 , Au 36 (SPh-tBu) 24 , and Au 30 (S-tBu) 18 , exclusively, starting from a common Au n (glutathione) m (where n and m are number of gold atoms and glutathiolate ligands) starting material upon reaction with HSCH 2 CH 2 Ph, HSPh-tBu, and HStBu, respectively. The systematic synthetic approach involves two steps: (i) synthesis of kinetically controlled Au n (glutathione) m crude nanocluster mixture with 1:4 gold to thiol molar ratio and (ii) thermochemical treatment of the purified nanocluster mixture with excess thiols to obtain thermodynamically stable nanomolecules. Thermochemical reactions with physicochemically different ligands formed highly monodispersed, exclusively three different core-size nanomolecules, suggesting a ligand induced core-size conversion and structural transformation. The purpose of this work is to make available a facile and simple synthetic method for the preparation of Au 38 (SCH 2 CH 2 Ph) 24 , Au 36 (SPh-tBu) 24 , and Au 30 (S-tBu) 18 , to nonspecialists and the broader scientific community. The central idea of simple synthetic method was demonstrated with other ligand systems such as cyclopentanethiol (HSC 5 H 9 ), cyclohexanethiol(HSC 6 H 11 ), para-methylbenzenethiol(pMBT), 1-pentanethiol(HSC 5 H 11 ), 1-hexanethiol(HSC 6 H 13 ), where Au 36 (SC 5 H 9 ) 24 , Au 36 (SC 6 H 11 ) 24 , Au 36 (pMBT) 24 , Au 38 (SC 5 H 11 ) 24 , and Au 38 (SC 6 H 13 ) 24 were obtained, respectively.

  8. CERN : Nouveaux records lors d'une période d'exploitation au PS/SPS ; Un nouveau rôle pour les ISR ; Deuxième région d'intersection pour le système pp du SPS ; Détermination de la durée de vie du charme ; Calcul en Sicile et au CERN

    CERN Multimedia

    1979-01-01

    CERN : Nouveaux records lors d'une période d'exploitation au PS/SPS ; Un nouveau rôle pour les ISR ; Deuxième région d'intersection pour le système pp du SPS ; Détermination de la durée de vie du charme ; Calcul en Sicile et au CERN

  9. Rhombic Coulomb diamonds in a single-electron transistor based on an Au nanoparticle chemically anchored at both ends.

    Science.gov (United States)

    Azuma, Yasuo; Onuma, Yuto; Sakamoto, Masanori; Teranishi, Toshiharu; Majima, Yutaka

    2016-02-28

    Rhombic Coulomb diamonds are clearly observed in a chemically anchored Au nanoparticle single-electron transistor. The stability diagrams show stable Coulomb blockade phenomena and agree with the theoretical curve calculated using the orthodox model. The resistances and capacitances of the double-barrier tunneling junctions between the source electrode and the Au core (R1 and C1, respectively), and those between the Au core and the drain electrode (R2 and C2, respectively), are evaluated as 4.5 MΩ, 1.4 aF, 4.8 MΩ, and 1.3 aF, respectively. This is determined by fitting the theoretical curve against the experimental Coulomb staircases. Two-methylene-group short octanedithiols (C8S2) in a C8S2/hexanethiol (C6S) mixed self-assembled monolayer is concluded to chemically anchor the core of the Au nanoparticle at both ends between the electroless-Au-plated nanogap electrodes even when the Au nanoparticle is protected by decanethiol (C10S). This is because the R1 value is identical to that of R2 and corresponds to the tunneling resistances of the octanedithiol chemically bonded with the Au core and the Au electrodes. The dependence of the Coulomb diamond shapes on the tunneling resistance ratio (R1/R2) is also discussed, especially in the case of the rhombic Coulomb diamonds. Rhombic Coulomb diamonds result from chemical anchoring of the core of the Au nanoparticle at both ends between the electroless-Au-plated nanogap electrodes.

  10. Evaluation on ductile tearing properties of girth weld pipelines using SE(T) and SE(B) specimens

    Energy Technology Data Exchange (ETDEWEB)

    Mathias, Leonardo Luiz Siqueira; Ruggieri, Claudio [Universidade de Sao Paulo (USP), SP (Brazil). Dept. de Engenharia Naval e Oceanica

    2012-07-01

    Predictive methodologies aimed at quantifying the impact of defects in oil and gas pipelines play a key role in safety assessment procedures of in-service facilities. Current methodologies for structural integrity assessments advocate the use of geometry dependent resistance curves so that crack-tip constraint in the test specimen closely matches the crack tip constraint for the structural component. Testing standards now under development to measure fracture resistance of pipeline steels (J and CTOD) most often employ single edge notched specimens under tension (SENT) to match a postulated defect in the structural component. This paper presents an investigation of the ductile tearing properties for a girth weld of an API 5L X80 pipeline steel using experimentally measured crack growth resistance curves (J-R curves). Testing of the girth weld pipeline steels employed side-grooved, clamped SE(T) specimen with center-crack weld and side-grooved, three-point bending SE(B) (or SENB) specimens to determine the J-R curves. The methods were compared in terms of geometry, relative crack size and crack-tip constraint, and the results were applied to a case study, to evaluate the degree of conservativeness in defect acceptance criteria. The tests involving SE(B) specimens are usually considered conservative, however, the comparison between this two methods may point an accurate alternative for girth weld assessments, since adequate geometry is adopted to describe accurately the structure's behavior. (author)

  11. 46 CFR 62.35-10 - Flooding safety.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 2 2010-10-01 2010-10-01 false Flooding safety. 62.35-10 Section 62.35-10 Shipping... Requirements for Specific Types of Automated Vital Systems § 62.35-10 Flooding safety. (a) Automatic bilge.... (b) Remote controls for flooding safety equipment must remain functional under flooding conditions to...

  12. 77 FR 65508 - Annual Charge Filing Procedures for Natural Gas Pipelines

    Science.gov (United States)

    2012-10-29

    ...] Annual Charge Filing Procedures for Natural Gas Pipelines AGENCY: Federal Energy Regulatory Commission... FERC) is proposing to amend its regulations to revise the filing requirements for natural gas pipelines...) clause. Currently, natural gas pipelines utilizing an ACA clause must make a tariff filing to reflect a...

  13. Pärimuslik ajalugu ja Fr. R. Kreutzwald / Tiiu Jaago

    Index Scriptorium Estoniae

    Jaago, Tiiu, 1960-

    2005-01-01

    Pärimuslik ajalugu kui rahvapärane ajalookäsitus, mida saab uurida folkloorse jutustamise kaudu. Fr. R. Kreutzwaldi ja F. K. H. Kruse sõnavõttudest Aruküla koobaste päritolu kohta ajakirjas "Das Inland" aastast 1844

  14. Modeling and Calculation of Dent Based on Pipeline Bending Strain

    Directory of Open Access Journals (Sweden)

    Qingshan Feng

    2016-01-01

    Full Text Available The bending strain of long-distance oil and gas pipelines can be calculated by the in-line inspection tool which used inertial measurement unit (IMU. The bending strain is used to evaluate the strain and displacement of the pipeline. During the bending strain inspection, the dent existing in the pipeline can affect the bending strain data as well. This paper presents a novel method to model and calculate the pipeline dent based on the bending strain. The technique takes inertial mapping data from in-line inspection and calculates depth of dent in the pipeline using Bayesian statistical theory and neural network. To verify accuracy of the proposed method, an in-line inspection tool is used to inspect pipeline to gather data. The calculation of dent shows the method is accurate for the dent, and the mean relative error is 2.44%. The new method provides not only strain of the pipeline dent but also the depth of dent. It is more benefit for integrity management of pipeline for the safety of the pipeline.

  15. Approche historiographique des pratiques sportives au Cameroun

    Directory of Open Access Journals (Sweden)

    Biwole M. Claude Emmanuel Abolo

    2016-01-01

    En 50 ans d'indépendance, le sport camerounais a beaucoup évolué. De 11 en 1970, les fédérations sportives sont passées à plus de 40 aujourd'hui et les titres, trophées et médailles ne se comptent plus depuis lors. Le Cameroun est devenu progressivement une nation où le sport compte et où l'exploit sportif n'est plus méprisé, rejeté, voire vilipendé. Hier assimilés à des brutes épaisses, les sportifs sont aujourd'hui admirés et adulés. Finie l'image négative de marginaux qui leur collait au corps : finis les sous-entendus ridicules où ils étaient classés au bas de l'échelle sociale, juste bons pour bander les muscles et réaliser des performances. C'est cela la plus grande victoire du sport camerounais en 50 ans d'existence. Il a réussi à faire l'unanimité et les performances des sportifs devenues pour toute la nation un modèle, une référence et un réel motif de fierté.

  16. Instrumented Pipeline Initiative

    Energy Technology Data Exchange (ETDEWEB)

    Thomas Piro; Michael Ream

    2010-07-31

    This report summarizes technical progress achieved during the cooperative agreement between Concurrent Technologies Corporation (CTC) and U.S. Department of Energy to address the need for a for low-cost monitoring and inspection sensor system as identified in the Department of Energy (DOE) National Gas Infrastructure Research & Development (R&D) Delivery Reliability Program Roadmap.. The Instrumented Pipeline Initiative (IPI) achieved the objective by researching technologies for the monitoring of pipeline delivery integrity, through a ubiquitous network of sensors and controllers to detect and diagnose incipient defects, leaks, and failures. This report is organized by tasks as detailed in the Statement of Project Objectives (SOPO). The sections all state the objective and approach before detailing results of work.

  17. Statut des principales maladies cryptogamiques foliaires du blé au ...

    African Journals Online (AJOL)

    SARAH

    31 mai 2014 ... agriculture, N° 77, 4p. Farih A., Ezzahiri B., 1996. Distribution et importance des septorioses au Maroc. Proc. Symp. Rég. Les maladies des céréales et des légumineuses alimentaires, 11-14 November 1996, Rabat,. Maroc, Ezzahiri B., Al Yamani A., Farih A., El. Yamani M., (Eds.), Rabat, INRA, 390 p.

  18. 42 CFR 86.11 - Eligibility.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Eligibility. 86.11 Section 86.11 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES GRANTS FOR EDUCATION PROGRAMS IN OCCUPATIONAL SAFETY AND HEALTH Occupational Safety and Health Training Grants § 86.11...

  19. Optimization of pipeline transport for CO2 sequestration

    International Nuclear Information System (INIS)

    Zhang, Z.X.; Wang, G.X.; Massarotto, P.; Rudolph, V.

    2006-01-01

    Coal fired power generation will continue to provide energy to the world for the foreseeable future. However, this energy use is a significant contributor to increased atmospheric CO 2 concentration and, hence, global warming. Capture and disposal of CO 2 has received increased R and D attention in the last decade as the technology promises to be the most cost effective for large scale reductions in CO 2 emissions. This paper addresses CO 2 transport via pipeline from capture site to disposal site, in terms of system optimization, energy efficiency and overall economics. Technically, CO 2 can be transported through pipelines in the form of a gas, a supercritical fluid or in the subcooled liquid state. Operationally, most CO 2 pipelines used for enhanced oil recovery transport CO 2 as a supercritical fluid. In this paper, supercritical fluid and subcooled liquid transport are examined and compared, including their impacts on energy efficiency and cost. Using a commercially available process simulator, ASPEN PLUS 10.1, the results show that subcooled liquid transport maximizes the energy efficiency and minimizes the cost of CO 2 transport over long distances under both isothermal and adiabatic conditions. Pipeline transport of subcooled liquid CO 2 can be ideally used in areas of cold climate or by burying and insulating the pipeline. In very warm climates, periodic refrigeration to cool the CO 2 below its critical point of 31.1 o C, may prove economical. Simulations have been used to determine the maximum safe pipeline distances to subsequent booster stations as a function of inlet pressure, environmental temperature and ground level heat flux conditions

  20. Dynamical analysis of cylindrically symmetric anisotropic sources in f(R, T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Zubair, M.; Azmat, Hina [COMSATS Institute of Information Technology, Department of Mathematics, Lahore (Pakistan); Noureen, Ifra [University of Management and Technology, Department of Mathematics, Lahore (Pakistan)

    2017-03-15

    In this paper, we have analyzed the stability of cylindrically symmetric collapsing object filled with locally anisotropic fluid in f(R, T) theory, where R is the scalar curvature and T is the trace of stress-energy tensor of matter. Modified field equations and dynamical equations are constructed in f(R, T) gravity. The evolution or collapse equation is derived from dynamical equations by performing a linear perturbation on them. The instability range is explored in both the Newtonian and the post-Newtonian regimes with the help of an adiabatic index, which defines the impact of the physical parameters on the instability range. Some conditions are imposed on the physical quantities to secure the stability of the gravitating sources. (orig.)

  1. MicroRNA-10b downregulation mediates acute rejection of renal allografts by derepressing BCL2L11

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Xiaoyou [Department of Organ Transplantation, Zhujiang Hospital, Guangzhou 510282 (China); Dong, Changgui [Institute of Molecular Ecology and Evolution, East China Normal University, Shanghai 200062 (China); Jiang, Zhengyao [Department of Organ Transplantation, Zhujiang Hospital, Guangzhou 510282 (China); Wu, William K.K. [Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, NT, Hong Kong (China); State Key Laboratory of Digestive Diseases, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong (China); Chan, Matthew T.V. [Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, NT, Hong Kong (China); Zhang, Jie [Department of Organ Transplantation, Zhujiang Hospital, Guangzhou 510282 (China); Li, Haibin; Qin, Ke [Guangxi Key Laboratory for Transplantation Medicine Department of Organ Transplantation in Guangzhou Military Region, Institute of Transplant Medicine, 303 Hospital of People' s Liberation Army, Nanning, Guangxi 530021 (China); Sun, Xuyong, E-mail: sunxuyong0528@163.com [Guangxi Key Laboratory for Transplantation Medicine Department of Organ Transplantation in Guangzhou Military Region, Institute of Transplant Medicine, 303 Hospital of People' s Liberation Army, Nanning, Guangxi 530021 (China)

    2015-04-10

    Kidney transplantation is the major therapeutic option for end-stage kidney diseases. However, acute rejection could cause allograft loss in some of these patients. Emerging evidence supports that microRNA (miRNA) dysregulation is implicated in acute allograft rejection. In this study, we used next-generation sequencing to profile miRNA expression in normal and acutely rejected kidney allografts. Among 75 identified dysregulated miRNAs, miR-10b was the most significantly downregulated miRNAs in rejected allografts. Transfecting miR-10b inhibitor into human renal glomerular endothelial cells recapitulated key features of acute allograft rejection, including endothelial cell apoptosis, release of pro-inflammatory cytokines (interleukin-6, tumor necrosis factor α, interferon-γ, and chemokine (C–C motif) ligand 2) and chemotaxis of macrophages whereas transfection of miR-10b mimics had opposite effects. Downregulation of miR-10b directly derepressed the expression of BCL2L11 (an apoptosis inducer) as revealed by luciferase reporter assay. Taken together, miR-10b downregulation mediates many aspects of disease pathogenicity of acute kidney allograft rejection. Restoring miR-10b expression in glomerular endothelial cells could be a novel therapeutic approach to reduce acute renal allograft loss. - Highlights: • miR-10b was the most downregulated microRNAs in acutely rejected renal allografts. • miR-10b downregulation triggered glomerular endothelial cell apoptosis. • miR-10b downregulation induced release of pro-inflammatory cytokines. • miR-10b downregulation derepressed its pro-apoptotic target BCL2L11.

  2. MicroRNA-10b downregulation mediates acute rejection of renal allografts by derepressing BCL2L11

    International Nuclear Information System (INIS)

    Liu, Xiaoyou; Dong, Changgui; Jiang, Zhengyao; Wu, William K.K.; Chan, Matthew T.V.; Zhang, Jie; Li, Haibin; Qin, Ke; Sun, Xuyong

    2015-01-01

    Kidney transplantation is the major therapeutic option for end-stage kidney diseases. However, acute rejection could cause allograft loss in some of these patients. Emerging evidence supports that microRNA (miRNA) dysregulation is implicated in acute allograft rejection. In this study, we used next-generation sequencing to profile miRNA expression in normal and acutely rejected kidney allografts. Among 75 identified dysregulated miRNAs, miR-10b was the most significantly downregulated miRNAs in rejected allografts. Transfecting miR-10b inhibitor into human renal glomerular endothelial cells recapitulated key features of acute allograft rejection, including endothelial cell apoptosis, release of pro-inflammatory cytokines (interleukin-6, tumor necrosis factor α, interferon-γ, and chemokine (C–C motif) ligand 2) and chemotaxis of macrophages whereas transfection of miR-10b mimics had opposite effects. Downregulation of miR-10b directly derepressed the expression of BCL2L11 (an apoptosis inducer) as revealed by luciferase reporter assay. Taken together, miR-10b downregulation mediates many aspects of disease pathogenicity of acute kidney allograft rejection. Restoring miR-10b expression in glomerular endothelial cells could be a novel therapeutic approach to reduce acute renal allograft loss. - Highlights: • miR-10b was the most downregulated microRNAs in acutely rejected renal allografts. • miR-10b downregulation triggered glomerular endothelial cell apoptosis. • miR-10b downregulation induced release of pro-inflammatory cytokines. • miR-10b downregulation derepressed its pro-apoptotic target BCL2L11

  3. Appui au réseautage et au renforcement des télécentres ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    En Afrique de l'Ouest francophone, les télécentres luttent pour atteindre la viabilité financière tout en demeurant au diapason des collectivités, une situation qui tient au fait qu'ils ont accès à un moins grand nombre de ressources en ligne et à une communauté d'utilisateurs plus restreinte que les télécentres anglophones.

  4. Measurement of hepatic blood flow in the unanesthetized rabbit using 198Au and 125I rose bengal clearance technique

    International Nuclear Information System (INIS)

    Balabaud, C.; Roche, M.-C.; Dangoumau, Jacques

    1975-01-01

    Hepatic blood flow was measured in the unanesthetized rabbit using the clearance technique of 198 Au and 125 I RB. The values are: 71.82+-16.24ml.min -1 .kg -1 for 198 Au, and 60.21+-9.94ml.min -1 .kg -1 for 125 I RB (P 198 Au [fr

  5. 77 FR 62150 - Approval and Promulgation of Implementation Plans; Kentucky; Approval of Revisions to the...

    Science.gov (United States)

    2012-10-12

    ....34 Standard of 10/23/01 66 FR 53661 05/15/91 Performance for Existing Pneumatic Rubber Tire... Abbreviations and 11/19/02 67 FR 69688 05/15/02 Acronyms. 1.04 Performance Tests... 10/23/01 66 FR 53660 11/19... 10/23/01 66 FR 53660 06/13/79 Requirements. Reg 6--Standards of Performance for Existing Affected...

  6. A Sustainable Nanocomposite Au(Salen)@CC for Catalytic Degradation of Eosin Y and Chromotrope 2R Dyes.

    Science.gov (United States)

    Mayani, Vishal J; Mayani, Suranjana V; Kim, Sang Wook

    2017-08-03

    Up to now, a very few catalysts have been developed approaching the heterogeneous catalytic degradation of Eosin Y and Chromotrope 2R dyes (Acid Red 29). The present study provides a complete perspective of recyclable nanocomposite Au(Salen)@CC for catalytic degradation of hazardous water pollutant dyes viz., Eosin Y & Chromotrope 2R using mild reaction conditions. New gold Salen complex doped carbon nanocomposite Au(Salen)@CC was developed by easy methodology using nano carbon cage (CC) prepared from low-priced Pyrolysis fuel oil (PFO) residue based Pitch. The UV-Vis adsorption spectroscopy results of Eosin Y and Chromotrope 2R dyes indicated complete degradation into acidic compounds which can be further mineralized to CO 2 and H 2 O under mild reaction conditions. The heterogeneous catalyst recycled and reused successfully for four repeated experiments without loss in its adequate performance. This new sustainable and eco-friendly catalyst delivered significant degradation activity compared to existing reports and it can be further utilized for new multifunctional applications such as, radiopharmaceutical activities, heterogeneous catalysis and chiral resolution.

  7. 75 FR 34959 - Five-Year Review of Oil Pipeline Pricing Index

    Science.gov (United States)

    2010-06-21

    ...] Five-Year Review of Oil Pipeline Pricing Index June 15, 2010. AGENCY: Federal Energy Regulatory... comments on its five-year review of the oil pipeline pricing index established in Revisions to Oil Pipeline...-year review of the oil pricing index, the Commission adopted an index of PPI+1.3 for the five-year...

  8. Saudi Aramco experience towards establishing Pipelines Integrity Management Systems (PIMS)

    Energy Technology Data Exchange (ETDEWEB)

    AlAhmari, Saad A. [Saudi Aramco, Dhahran (Saudi Arabia)

    2009-12-19

    Saudi Aramco pipelines network transports hydrocarbons to export terminals, processing plants and domestic users. This network faced several safety and operational-related challenges that require having a more effective Pipelines Integrity Management System (PIMS). Therefore Saudi Aramco decided to develop its PIMS on the basis of geographical information system (GIS) support through different phases, i.e., establishing the integrity management framework, risk calculation approach, conducting a gap analysis toward the envisioned PIMS, establishing the required scope of work, screening the PIMS applications market, and selecting suitable tools that satisfy expected deliverables, and implement PIMS applications. Saudi Aramco expects great benefits from implementing PIMS, e.g., enhancing safety, enhancing pipeline network robustness, optimizing inspection and maintenance expenditures, and facilitating pipeline management and the decision-making process. Saudi Aramco's new experience in adopting PIMS includes many challenges and lessons-learned associated with all of the PIMS development phases. These challenges include performing the gap analysis, conducting QA/QC sensitivity analysis for the acquired data, establishing the scope of work, selecting the appropriate applications and implementing PIMS. (author)

  9. Saudi Aramco experience towards establishing Pipelines Integrity Management System (PIMS)

    Energy Technology Data Exchange (ETDEWEB)

    Al-Ahmari, Saad A. [Saudi Aramco, Dhahran (Saudi Arabia)

    2009-07-01

    Saudi Aramco pipelines network transports hydrocarbons to export terminals, processing plants and domestic users. This network faced several safety and operational-related challenges that require having a more effective Pipelines Integrity Management System (PIMS). Therefore Saudi Aramco decided to develop its PIMS on the basis of geographical information system (GIS) support through different phases, i.e., establishing the integrity management framework, risk calculation approach, conducting a gap analysis toward the envisioned PIMS, establishing the required scope of work, screening the PIMS applications market, and selecting suitable tools that satisfy expected deliverables, and implement PIMS applications. Saudi Aramco expects great benefits from implementing PIMS, e.g., enhancing safety, enhancing pipeline network robustness, optimizing inspection and maintenance expenditures, and facilitating pipeline management and the decision-making process. Saudi Aramco's new experience in adopting PIMS includes many challenges and lessons-learned associated with all of the PIMS development phases. These challenges include performing the gap analysis, conducting QA/QC sensitivity analysis for the acquired data, establishing the scope of work, selecting the appropriate applications and implementing PIMS. (author)

  10. Failure analysis of high strength pipeline with single and multiple corrosions

    International Nuclear Information System (INIS)

    Chen, Yanfei; Zhang, Hong; Zhang, Juan; Li, Xin; Zhou, Jing

    2015-01-01

    Highlights: • We study failure of high strength pipelines with single corrosion. • We give regression equations for failure pressure prediction. • We propose assessment procedure for pipelines with multiple corrosions. - Abstract: Corrosion will compromise safety operation of oil and gas pipelines, accurate determination of failure pressure finds importance in residual strength assessment and corrosion allowance design of onshore and offshore pipelines. This paper investigates failure pressure of high strength pipeline with single and multiple corrosions using nonlinear finite element analysis. On the basis of developed regression equations for failure pressure prediction of high strength pipeline with single corrosion, the paper proposes an assessment procedure for predicting failure pressure of high strength pipeline with multiple corrosions. Furthermore, failure pressures predicted by proposed solutions are compared with experimental results and various assessment methods available in literature, where accuracy and versatility are demonstrated

  11. Le travail des femmes à Frías: modèle andin et variante régionale

    Directory of Open Access Journals (Sweden)

    1993-01-01

    Full Text Available À Frías, dans les Andes de Piura, les femmes sont absentes des tâches de production agricole au sens strict. Une comparaison avec des études menées dans d’autres régions montre en quoi cette organisation diffère d’un modèle andin. Mais ce modèle est trompeur. Il recouvre une grande variété de situations. Entre autres facteurs, la reconstitution du passé d’un système de production est nécessaire pour comprendre son orientation actuelle. EL TRABAJO DE LAS MUJERES EN FRÍAS: MODELO ANDINO Y VARIANTE REGIONAL. En Frías, en la sierra de Piura, las mujeres no participan en las tareas de producción agrícola en el sentido estricto. Una comparación con estudios realizados en otras regiones indica cómo esta organización difiere de un modelo andino. Pero, este modelo, que hemos construido, encubre una gran diversidad de casos. Entre otros factores, la reconstitución del pasado de un sistema de producción es necesaria para entender su orientación actual. WOMEN’ S WORK: ANDEAN PATTERN AND LOCAL VARIATION. Women are not present in agricultural working stricto sensu in Frías, in the Piura highlands. A comparison of the pattern of organization with case studies in other regions of Peru shows differences with the Andean pattern. But the pattern described here covers a great diversity of situations. Among many factors, the historical reconstitution of a farming system is necessary to understand its current orientation.

  12. Från outsiderfilmmakare till etablerad indieregissör : David Lynch, Jim Jarmusch och Steven Soderbergh

    OpenAIRE

    Simberg, Maximilian

    2014-01-01

    Det här arbetet behandlar kreativ frihet och konstnärligt oberoende i filmskapande, utgående från begreppet independent film och regissörerna David Lynch, Jim Jarmusch och Steven Soderbergh. Den centrala frågeställningen är hur det har varit möjligt för en filmkonstnär att uppnå konstnärligt oberoende och samtidigt ha en långlivad och framgångsrik karriär. Arbetets fokus ligger på de tre regissörernas genombrottsfilmer; Eraserhead, Stranger Than Paradise och sex, lies, and videotape, och förs...

  13. Radial and latitudinal dependencies of discontinuities in the solar wind between 0.3 and 19 AU and −80° and +10°

    Directory of Open Access Journals (Sweden)

    A. Söding

    2001-07-01

    Full Text Available Directional discontinuities (DD from 5 missions at 7 different locations between 0.3 and 19 AU and −80° and +10° in the 3D heliosphere are investigated during minimum solar activity. The data are surveyed using the identification criteria of Burlaga (1969 (B and Tsurutani and Smith (1979 (TS. The rate of occurrence depends linearly on the solar wind velocity caused by the geometric effect of investigating a larger plasma volume if the solar wind velocity νsw increases. The radial dependence is proportional to r–0.78 (TS criterion and r–1.28 (B criterion, respectively. This dependence is not only due to an increasing miss rate with increasing distance. The DDs must be unstable or some other physical effect must exist. After normalization of the daily rates to 400 km/s and 1 AU, no dependence on heliographic latitude or on solar wind structures is observable. This means that the DDs are uniformly distributed on a spherical shell. Normalized 64 DD per day are identified with both criteria. But large variations of the daily rate still occur, indicating that other influences must exist. The ratio of the rates of rotational (RDs and tangential discontinuities (TDs depends on the solar wind structures. In high speed streams, relatively more RDs exist than in low speed streams. In the inner heliosphere (r < 10 AU, no radial or latitudinal dependence of the portions of the DD types occur. 55% clear RDs, 10% clear TDs and 33% EDs (either discontinuities are observed, but the portions differ with regard to the criteria used. In the middle heliosphere (10 AU< r < 40 AU, the DD types are more uniformly distributed. The distribution of the directional change ω over the transition evolves to an increase of smaller ω with increasing distance from the sun. The evolution is yielded by the anisotropic RDs with small ω. The spatial thickness dkm in kilometers increases with distance. The thickness drg normalized to the proton gyro radius decreases by a

  14. Oracle BAM 11gR1 Handbook

    CERN Document Server

    Wang, Pete

    2012-01-01

    "Oracle BAM 11gR1 Handbook" is a practical best practices tutorial focused entirely on Oracle Business Activity Monitoring. An intermediate-to-advanced guide, step-by-step instructions and an accompanying demo project will help SOA report developers through application development and producing dashboards and reports. If you are a developer/report developer or SOA Architect who wants to learn valuable Oracle BAM best practices for monitoring your operations in real time, then "Oracle BAM 11gR1 Handbook" is for you. Administrators will also find the book useful. You should already be comfortabl

  15. New proposal for non-linear ghost-free massive F(R) gravity: Cosmic acceleration and Hamiltonian analysis

    International Nuclear Information System (INIS)

    Klusoň, Josef; Nojiri, Shin'ichi; Odintsov, Sergei D.

    2013-01-01

    We propose new version of massive F(R) gravity which is natural generalization of convenient massive ghost-free gravity. Its Hamiltonian formulation in scalar-tensor frame is developed. We show that such F(R) theory is ghost-free. The cosmological evolution of such theory is investigated. Despite the strong Bianchi identity constraint the possibility of cosmic acceleration (especially, in the presence of cold dark matter) is established. Ghost-free massive F(R,T) gravity is also proposed

  16. Peripheral metabolism of (R)-[{sup 11}C]verapamil in epilepsy patients

    Energy Technology Data Exchange (ETDEWEB)

    Abrahim, Aiman; Langer, Oliver [Medical University of Vienna, Department of Clinical Pharmacology, Division of Clinical Pharmacokinetics, Vienna (Austria); Austrian Research Centers GmbH - ARC, Department of Radiopharmaceuticals, Seibersdorf (Austria); Luurtsema, Gert; Lubberink, Mark; Lammertsma, Adriaan A. [VU University Medical Centre, Department of Nuclear Medicine and PET Research, Amsterdam (Netherlands); Bauer, Martin; Joukhadar, Christian; Mueller, Markus [Medical University of Vienna, Department of Clinical Pharmacology, Division of Clinical Pharmacokinetics, Vienna (Austria); Karch, Rudolf [Medical University of Vienna, Department of Medical Computer Sciences, Vienna (Austria); Pataraia, Ekaterina; Baumgartner, Christoph [Medical University of Vienna, Department of Neurology, Vienna (Austria); Kletter, Kurt [Medical University of Vienna, Department of Nuclear Medicine, Vienna (Austria)

    2008-01-15

    (R)-[{sup 11}C]verapamil is a new PET tracer for P-glycoprotein-mediated transport at the blood-brain barrier. For kinetic analysis of (R)-[{sup 11}C]verapamil PET data the measurement of a metabolite-corrected arterial input function is required. The aim of this study was to assess peripheral (R)-[{sup 11}C]verapamil metabolism in patients with temporal lobe epilepsy and compare these data with previously reported data from healthy volunteers. Arterial blood samples were collected from eight patients undergoing (R)-[{sup 11}C]verapamil PET and selected samples were analysed for radiolabelled metabolites of (R)-[{sup 11}C]verapamil by using an assay that measures polar N-demethylation metabolites by solid-phase extraction and lipophilic N-dealkylation metabolites by HPLC. Peripheral metabolism of (R)-[{sup 11}C]verapamil was significantly faster in patients compared to healthy volunteers (AUC of (R)-[{sup 11}C]verapamil fraction in plasma: 29.4 {+-} 3.9 min for patients versus 40.8 {+-} 5.0 min for healthy volunteers; p < 0.0005, Student's t-test), which resulted in lower (R)-[{sup 11}C]verapamil plasma concentrations (AUC of (R)-[{sup 11}C]verapamil concentration, normalised to injected dose per body weight: 25.5 {+-} 2.1 min for patients and 30.5 {+-} 5.9 min for healthy volunteers; p = 0.038). Faster metabolism appeared to be mainly due to increased N-demethylation as the polar [{sup 11}C]metabolite fraction was up to two-fold greater in patients. Faster metabolism of (R)-[{sup 11}C]verapamil in epilepsy patients may be caused by hepatic cytochrome P450 enzyme induction by antiepileptic drugs. Based on these data caution is warranted when using an averaged arterial input function derived from healthy volunteers for the analysis of patient data. Moreover, our data illustrate how antiepileptic drugs may decrease serum levels of concomitant medication, which may eventually lead to a loss of therapeutic efficacy. (orig.)

  17. Evolution de certains composés volatils du bois de chêne au cours de son séchage premiers résultats

    Directory of Open Access Journals (Sweden)

    Pascal Chatonnet

    1994-12-01

    Full Text Available Pendant le séchage des merrains sur parc à l'air libre, on assiste à une profonde modification de la composition chimique et du profil aromatique du bois de chêne. La teneur en eugénol, en aldéhydes phénols et en Β-méthyl-y-octalactone augmente régulièrement pendant le vieillissement du bois. Principalement sous forme trans au début du séchage, la Β-méthyl-y-octalactone s'accumule finalement sous la forme cis plus aromatique. Dans le même temps, on observe également une accumulation importante du précurseur inodore de Β-méthyl-y-octalactone. L'intervention des micro-organismes fréquemment isolés sur le bois en cours de séchage naturel sur la formation de composés aromatiques a été étudiée. La culture de diverses moisissures isolées de bois en cours de séchage naturel sur extraits de bois et directement sur sciure de chêne aboutit dans tous les cas à une forte diminution des teneurs en aldéhydes phénols, notamment de la vanilline. En effet, tous les micro-organismes étudiés (Penicilium sp., Trichoderma sp., Aureobasidium sp. sont incapables de dégrader la lignine car ils ne possèdent pas d'activité ligninase. En revanche, ces champignons possèdent une forte activité oxydo-réductase capable de réduire la vanilline en alcool vanillique inodore. En conséquence, les aldéhydes phénols apparaissant au cours du séchage naturel du merrain ne dérivent pas d'une attaque enzymatique mais plus vraisemblablementde l'acidolyse et de l'oxydation chimique de la lignine du bois. Le stockage du bois à l'air libre en présence d'eau et d'oxygène doit permettre une évolution favorable de son potentiel aromatique tant que la vanilline et la cis Β-méthyly-octalactone s'accumulent.

  18. Synthesis and preclinical evaluation of [11C]D617, a metabolite of (R)-[11C]verapamil

    NARCIS (Netherlands)

    Verbeek, Joost; Syvänen, Stina; Schuit, Robert C.; Eriksson, Jonas; de Lange, Elizabeth C M; Windhorst, Albert D.; Luurtsema, Gert; Lammertsma, Adriaan A.

    2012-01-01

    OBJECTIVES: (R)-[(11)C]verapamil is widely used as a positron emission tomography (PET) tracer to evaluate P-glycoprotein (P-gp) functionality at the blood-brain barrier in man. A disadvantage of (R)-[(11)C]verapamil is the fact that its main metabolite, [(11)C]D617, also enters the brain. For

  19. Research on Connection and Function Reliability of the Oil&Gas Pipeline System

    Directory of Open Access Journals (Sweden)

    Xu Bo

    2017-01-01

    Full Text Available Pipeline transportation is the optimal way for energy delivery in terms of safety, efficiency and environmental protection. Because of the complexity of pipeline external system including geological hazards, social and cultural influence, it is a great challenge to operate the pipeline safely and reliable. Therefore, the pipeline reliability becomes an important issue. Based on the classical reliability theory, the analysis of pipeline system is carried out, then the reliability model of the pipeline system is built, and the calculation is addressed thereafter. Further the connection and function reliability model is applied to a practical active pipeline system, with the use of the proposed methodology of the pipeline system; the connection reliability and function reliability are obtained. This paper firstly presented to considerate the connection and function reliability separately and obtain significant contribution to establish the mathematical reliability model of pipeline system, hence provide fundamental groundwork for the pipeline reliability research in the future.

  20. PHENIX results on jets in d + Au

    Energy Technology Data Exchange (ETDEWEB)

    Hanks, J. Ali

    2016-12-15

    We present recently published results [A. Adare, et al., (arXiv:1509.04657)] on fully reconstructed R=0.3 anti-k{sub t} jets measured in p+p and d+Au collisions at 200 GeV center-of-mass energy. The jet yields for four centrality classes along with the p+p reference are presented, as well as both the minimum bias R{sub dAu} and centrality dependent R{sub dAu} and R{sub CP}. We find that while the minimum bias R{sub dA} is consistent with unity, providing a strong constraint on models including cold-nuclear-matter effects or energy loss in small systems, the centrality dependent R{sub dAu} show a striking variation which presents a challenge to models attempting to describe the interplay between soft and hard processes in these systems.

  1. Security of pipeline facilities

    Energy Technology Data Exchange (ETDEWEB)

    Lee, S.C. [Alberta Energy and Utilities Board, Calgary, AB (Canada); Van Egmond, C.; Duquette, L. [National Energy Board, Calgary, AB (Canada); Revie, W. [Canada Centre for Mineral and Energy Technology, Ottawa, ON (Canada)

    2005-07-01

    This working group provided an update on provincial, federal and industry directions regarding the security of pipeline facilities. The decision to include security issues in the NEB Act was discussed as well as the Pipeline Security Management Assessment Project, which was created to establish a better understanding of existing security management programs as well as to assist the NEB in the development and implementation of security management regulations and initiatives. Amendments to the NEB were also discussed. Areas of pipeline security management assessment include physical safety management; cyber and information security management; and personnel security. Security management regulations were discussed, as well as implementation policies. Details of the Enbridge Liquids Pipelines Security Plan were examined. It was noted that the plan incorporates flexibility for operations and is integrated with Emergency Response and Crisis Management. Asset characterization and vulnerability assessments were discussed, as well as security and terrorist threats. It was noted that corporate security threat assessment and auditing are based on threat information from the United States intelligence community. It was concluded that the oil and gas industry is a leader in security in North America. The Trans Alaska Pipeline Incident was discussed as a reminder of how costly accidents can be. Issues of concern for the future included geographic and climate issues. It was concluded that limited resources are an ongoing concern, and that the regulatory environment is becoming increasingly prescriptive. Other concerns included the threat of not taking international terrorism seriously, and open media reporting of vulnerability of critical assets, including maps. tabs., figs.

  2. (S)- and (R)-[11C]nicotine and the metabolite (R/S)-[11C]cotinine. Preparation, metabolite studies and in vivo distribution in the human brain using PET

    International Nuclear Information System (INIS)

    Halldin, C.; Swahn, C.-G.; Nybaeck, H.; Naagren, K.; Laangstroem, B.

    1992-01-01

    In order to investigate [ 11 C]nicotine binding and metabolism in the living human brain by PET, routine protocols were developed for the preparation and purification of (S)-and (R)-[ 11 C]nicotine and the metabolite (R/S)-[ 11 C]cotinine. (S)- and (R)-[ 11 C]nicotine were prepared by N-methylation with [ 11 C]methyl iodide of the appropriate secondary amine, which was liberated in situ by 2,2,6,6,-tetramethylpiperidine (TMP) from its corresponding biscamsylate-salt. (R/S)-[ 11 C]Cotinine was prepared by N-methylation of the amide precursor using tetrabutylammonium hydroxide as a phase transfer catalyst. Straight-phase semipreparative HPLC was in all purifications found to be superior to reversed-phase since the contamination by the norcompounds was eliminated. Reaction in acetonitrile for both (S)- and (R)-[ 11 C]nicotine and (R/S)-[ 11 C]cotinine with subsequent straight-phase HPLC purification resulted in 35-45% radiochemical yield with a total synthesis time of 30-35 min, a specific radioactivity of 1000-1500 Ci/mmol (37-55 GBq/μmol, EOS) and a radiochemical purity >99%. The uptake and distribution of these tracers in the human brain was studied in healthy volunteers by PET. The metabolite (R/S)-[ 11 C]cotinine did not cross the blood-brain barrier to any significant degree. (author)

  3. Public perceptions of CO2 transportation in pipelines

    International Nuclear Information System (INIS)

    Gough, Clair; O'Keefe, Laura; Mander, Sarah

    2014-01-01

    This paper explores the response by members of the lay public to the prospect of an onshore CO 2 pipeline through their locality as part of a proposed CCS development and presents results from deliberative Focus Groups held along a proposed pipeline route. Although there is a reasonable level of general knowledge about CO 2 across the lay public, understanding of its specific properties is more limited. The main concerns expressed around pipelines focused on five areas: (i) safe operation of the pipeline; (ii) the risks to people, livestock and vegetation arising from the leakage of CO 2 from the pipeline; (iii) the innovative and ‘first of its kind' nature of the pipeline and the consequent lack of operational CO 2 pipelines in the UK to demonstrate the technology; (iv) impacts on coastal erosion at the landfall site; and (v) the potential disruption to local communities during pipeline construction. Participants expressed scepticism over the motivations of CO 2 pipeline developers. Trust that the developer will minimise risk during the route selection and subsequent construction, operation and maintenance of the pipeline is key; building trust within the local community requires early engagement processes, tailored to deliver a variety of engagement and information approaches. - Highlights: • Lay publics express good general knowledge of CO 2 but not of its specific properties. • Key concerns relate to risk and safety and ‘first of a kind' nature of CO 2 pipeline. • Group participants are sceptical about motivations of CO 2 pipeline developers. • Communities' trust in developer is a major element of their risk assessment

  4. Solar System constraints on a cosmologically viable f(R) theory

    Energy Technology Data Exchange (ETDEWEB)

    Bisabr, Yousef, E-mail: y-bisabr@srttu.ed [Department of Physics, Shahid Rajaee Teacher Training University, Lavizan, Tehran 16788 (Iran, Islamic Republic of)

    2010-01-18

    Recently, a model f(R) theory is proposed (Miranda et al. (2009)) which is cosmologically viable and distinguishable from LAMBDACDM. We use chameleon mechanism to investigate viability of the model in terms of Solar System experiments.

  5. 40 CFR 258.10 - Airport safety.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Airport safety. 258.10 Section 258.10 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES CRITERIA FOR MUNICIPAL SOLID WASTE LANDFILLS Location Restrictions § 258.10 Airport safety. (a) Owners or operators of new...

  6. Multi objective optimization of line pack management of gas pipeline system

    International Nuclear Information System (INIS)

    Chebouba, A

    2015-01-01

    This paper addresses the Line Pack Management of the ''GZ1 Hassi R'mell-Arzew'' gas pipeline. For a gas pipeline system, the decision-making on the gas line pack management scenarios usually involves a delicate balance between minimization of the fuel consumption in the compression stations and maximizing gas line pack. In order to select an acceptable Line Pack Management of Gas Pipeline scenario from these two angles for ''GZ1 Hassi R'mell- Arzew'' gas pipeline, the idea of multi-objective decision-making has been introduced. The first step in developing this approach is the derivation of a numerical method to analyze the flow through the pipeline under transient isothermal conditions. In this paper, the solver NSGA-II of the modeFRONTIER, coupled with a matlab program was used for solving the multi-objective problem

  7. Rupture detection device for pipeline in reactor

    International Nuclear Information System (INIS)

    Murakoshi, Toshinori; Kanamori, Shigeru; Shirasawa, Hirofumi.

    1991-01-01

    A difference between each of the pressures in a plurality of pipelines disposed in a shroud a reactor container and a pressure outside of the shroud is detected, thereby enabling safety and reliable detection even for simultaneous rapture and leakage of the pipelines. That is, a difference between the pressure of a steam phase outside of the shroud and a pressure in each of a plurality of low pressure injection pipelines in an emergency core cooling system opened to the inside of the shroud in the reactor container is detected by a difference pressure detector for each of them. Then, an average value for each of the pressure difference is determined, which is compared with the difference pressure obtained from each of the detectors in a comparator. Then, if openings should be caused by rupture, leakage or the like in any of the pipelines, the pressure in that pipeline is lowered to a vicinity of an atmospheric pressure and at the vapor phase pressure at the lowest. If the pressure is compared with the average value by the comparator, a negative difference is caused. Accordingly, an alarming unit generates an alarm based on the pressure difference signal, thereby enabling to specify the failed pipeline and provide an announce of the failure. (I.S.)

  8. Triangular Zn{sub 3} and Ga{sub 3} units in Sr{sub 2}Au{sub 6}Zn{sub 3}, Eu{sub 2}Au{sub 6}Zn{sub 3}, Sr{sub 2}Au{sub 6}Ga{sub 3}, and Eu{sub 2}Au{sub 6}Ga{sub 3}. Structure, magnetism, {sup 151}Eu Moessbauer and {sup 69;71}Ga solid state NMR spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Gerke, Birgit; Niehaus, Oliver; Poettgen, Rainer [Muenster Univ. (Germany). Inst. fuer Anorganische und Analytische Chemie; Korthaus, Alexander; Haarmann, Frank [RWTH Aachen Univ. (Germany). Inst. fuer Anorganische Chemie

    2016-08-01

    The gold-rich intermetallic compounds Sr{sub 2}Au{sub 6}Zn{sub 3}, Eu{sub 2}Au{sub 6}Zn{sub 3}, Sr{sub 2}Au{sub 6}Ga{sub 3}, and Eu{sub 2}Au{sub 6}Ga{sub 3} were synthesized from the elements in sealed tantalum ampoules in induction or muffle furnaces. The europium compounds are reported for the first time and their structures were refined from single crystal X-ray diffractometer data: Sr{sub 2}Au{sub 6}Zn{sub 3} type, R anti 3c, a = 837.7(1), c = 2184.5(4) pm, wR2 = 0.0293, 572 F{sup 2} values for Eu{sub 2}Au{sub 6.04}Zn{sub 2.96} and a = 838.1(2), c = 2191.7(5) pm, wR2 = 0.0443, 513 F{sup 2} values for Eu{sub 2}Au{sub 6.07}Ga{sub 2.93} with 20 variables per refinement. The structures consist of a three-dimensional gold network with a 6R stacking sequence, similar to the respective diamond polytype. The cavities of the network are filled in a ratio of 2:1 by strontium (europium) atoms and Ga{sub 3} (Zn{sub 3}) triangles in an ordered manner. Sr{sub 2}Au{sub 6}Zn{sub 3} and Sr{sub 2}Au{sub 6}Ga{sub 3} are diamagnetic with room temperature susceptibilities of -3.5 x 10{sup -4} emu mol{sup -1}. Temperature dependent susceptibility and {sup 151}Eu Moessbauer spectroscopic measurements show a stable divalent ground state for both europium compounds. Eu{sub 2}Au{sub 6}Zn{sub 3} and Eu{sub 2}Au{sub 6}Ga{sub 3} order antiferromagnetically below Neel temperatures of 16.3 and 12.1 K, respectively. Anisotropic electrical conductivity of Sr{sub 2}Au{sub 6}Ga{sub 3} is proven by an alignment of the crystallites in the magnetic field. Orientation-dependent {sup 69;71}Ga NMR experiments combined with quantum mechanical calculations (QM) give evidence for a highly anisotropic charge distribution of the Ga atoms.

  9. Study of Antigravity in an F(R) Model and in Brans-Dicke Theory with Cosmological Constant

    OpenAIRE

    Oikonomou, V. K.; Karagiannakis, N.

    2014-01-01

    We study antigravity, that is having an effective gravitational constant with a negative sign, in scalar-tensor theories originating from $F(R)$-theory and in a Brans-Dicke model with cosmological constant. For the $F(R)$ theory case, we obtain the antigravity scalar-tensor theory in the Jordan frame by using a variant of the Lagrange multipliers method and we numerically study the time dependent effective gravitational constant. As we shall demonstrate by using a specific $F(R)$ model, altho...

  10. Solar System constraints on a cosmologically viable f(R) theory

    International Nuclear Information System (INIS)

    Bisabr, Yousef

    2010-01-01

    Recently, a model f(R) theory is proposed (Miranda et al. (2009)) which is cosmologically viable and distinguishable from ΛCDM. We use chameleon mechanism to investigate viability of the model in terms of Solar System experiments.

  11. High temperature pipeline design

    Energy Technology Data Exchange (ETDEWEB)

    Greenslade, J.G. [Colt Engineering, Calgary, AB (Canada). Pipelines Dept.; Nixon, J.F. [Nixon Geotech Ltd., Calgary, AB (Canada); Dyck, D.W. [Stress Tech Engineering Inc., Calgary, AB (Canada)

    2004-07-01

    It is impractical to transport bitumen and heavy oil by pipelines at ambient temperature unless diluents are added to reduce the viscosity. A diluted bitumen pipeline is commonly referred to as a dilbit pipeline. The diluent routinely used is natural gas condensate. Since natural gas condensate is limited in supply, it must be recovered and reused at high cost. This paper presented an alternative to the use of diluent to reduce the viscosity of heavy oil or bitumen. The following two basic design issues for a hot bitumen (hotbit) pipeline were presented: (1) modelling the restart problem, and, (2) establishing the maximum practical operating temperature. The transient behaviour during restart of a high temperature pipeline carrying viscous fluids was modelled using the concept of flow capacity. Although the design conditions were hypothetical, they could be encountered in the Athabasca oilsands. It was shown that environmental disturbances occur when the fluid is cooled during shut down because the ground temperature near the pipeline rises. This can change growing conditions, even near deeply buried insulated pipelines. Axial thermal loads also constrain the design and operation of a buried pipeline as higher operating temperatures are considered. As such, strain based design provides the opportunity to design for higher operating temperature than allowable stress based design methods. Expansion loops can partially relieve the thermal stress at a given temperature. As the design temperature increase, there is a point at which above grade pipelines become attractive options, although the materials and welding procedures must be suitable for low temperature service. 3 refs., 1 tab., 10 figs.

  12. 75 FR 19645 - Enterprise Texas Pipeline LLC; Notice of Petition for Rate Approval

    Science.gov (United States)

    2010-04-15

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. PR10-14-000] Enterprise..., 2010, Enterprise Texas Pipeline LLC (Enterprise Texas) filed a petition for rate approval pursuant to section 284.123(b)(2) of the Commission's regulations. Enterprise Texas proposes rates of $0.6090 per...

  13. Pipeline repair in crossing river; Reparo de oleoduto em travessia de rio

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Walter Manoel [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The inspection and repair of buried pipelines in rivers crossings request the perfect study and use of techniques committed with the people's safety, environmental and pipelines integrity. The planning, elaboration and training in the constructive methods, analysis of technical alternatives and the logistics are preponderant factors. This paper describes step by step, since the risks and difficulties to find a pipe defect indicated in the report of intelligent pig, as well as the actions, experiences and techniques (project, pipeline location, excavation, underwater lowering, reinforcement metallic trench, water exhaustion, rock dismount and pipeline repair sleeves) that allowed repair a pipeline in river crossing. (author)

  14. Invisible transport pathways. How dangerous are pipeline tracks?; Unsichtbare Transportwege. Wie gefaehrlich sind Pipelinetrassen?

    Energy Technology Data Exchange (ETDEWEB)

    Konersmann, Rainer; Kuehl, Christiane; Wilk, Werner [Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin (Germany). Arbeitsgruppe ' Risikomanagement'

    2008-11-15

    Pipelines are usually buried and have the function of long-distance transport. For this, special safety measures are requires. For example, pipelines of the chemical industry have defined locations that must be easily identifiable. Pipelines must be adapted to infrastructural and topographic boundary conditions, in consideration of environmental protection and because the pipeline may be damaged by external influences. Even minor releases of chemical substances may pollute water and soil and cause damage to humans. The contribution discusses the possible damage resulting from a pipeline leak. (orig.)

  15. 49 CFR 193.2511 - Personnel safety.

    Science.gov (United States)

    2010-10-01

    ... Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY LIQUEFIED NATURAL GAS FACILITIES... or a means of escape. (c) Each LNG plant must be equipped with suitable first-aid material, the...

  16. Quantitative risk analysis in two pipelines operated by TRANSPETRO

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, Claudio B. [PETROBRAS Transporte S/A (TRANSPETRO), Rio de Janeiro, RJ (Brazil); Pinho, Edson [Universidade Federal Rural do Rio de Janeiro (UFRRJ), Seropedica, RJ (Brazil); Bittencourt, Euclides [Centro Universitario FIB, Salvador , BA (Brazil)

    2009-07-01

    Transportation risk analysis techniques were used to study two pipelines operated by TRANSPETRO. The Pipeline A is for the simultaneous transportation of diesel, gasoline and LPG and comprises three parts, all of them crossing rural areas. The Pipeline B is for oil transportation and one of its ends is located in an area of a high density population. Both pipelines had their risk studied using the PHAST RISK{sup R} software and the individual risk measures, the only considered measures for license purposes for this type of studies, presented level far below the maximum tolerable levels considered. (author)

  17. Observation of Au + AuAu + Au + ρ0 and Au + AuAu* + Au* + ρ0 with STAR

    International Nuclear Information System (INIS)

    Spencer, K.

    2002-01-01

    First observation of the reactions Au + AuAu + Au + ρ 0 and Au + AuAu* + Au* + ρ 0 with the STAR detector are reported. The ρ are produced at small perpendicular momentum, as expected if they couple coherently to both nuclei. Models of vector meson production and the correlation with nuclear breakup are discussed, as well as a fundamental test of quantum mechanics that is possible with the system. (author)

  18. The Vulnerability Formation Mechanism and Control Strategy of the Oil and Gas Pipeline City

    Science.gov (United States)

    Chen, Y. L.; Han, L.

    2017-12-01

    Most of the pipelines of oil and gas pipelines in our country have been for more than 25 years. These pipes are buried underground and was difficult to daily test. In addition, it was vulnerable to environmental, corrosion and natural disasters, So there is a hidden nature of accidents. The rapid development of urbanization, population accumulation, dense building and insufficient safety range are all the reasons for the frequent accidents of oil and gas pipelines. Therefore, to appraise and know the safe condition of the city various regions oil and gas pipelines is vital significant. In order to ensure the safety of oil and gas pipeline city, this paper defines the connotation of oil and gas pipeline city vulnerability according to the previous research on vulnerability. Then from three perspectives of environment, structure and behavior, based on the analytical paradigm of “structure—vulnerability conduct—performance” about oil and gas, the influential indicators of vulnerable oil and gas pipelines were analysed, the vulnerability mechanism framework of Oil and gas pipeline city was also constructed. Finally, the paper proposed the regulating strategy of the vulnerability of the oil and gas pipeline city to decrease its vulnerability index, which can be realize the city’s vulnerability evaluation and provides new ideas for the sustainable development of the city.

  19. 10 Contribution à la régulation de la température au sein d'un ...

    African Journals Online (AJOL)

    ALI

    Cette dégradation est influencée par plusieurs facteurs tels que : le pH, la température, la teneur en eau, etc. [2]. La température au ... Le digesteur étudié est de type batch, rempli à moitié dont l'autre moitié sert pour contenir le gaz produit. Le substrat utilisé .... coefficient d'absorption de la plaque; G éclairement solaire;.

  20. Nouvel institut de recherche au Liban pour répondre aux priorités en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    3 oct. 2017 ... L'Université américaine de Beyrouth (AUB) a annoncé la création d'un institut de la santé mondiale (The Global Health Institute) afin d'offrir une plateforme régionale à la recherche interdisciplinaire et au renforcement des capacités en santé mondiale. D'importantes crises humanitaires changent la nature ...

  1. Les représentations sociales liées au lieu de résidence au sein du parc de Bercy

    Directory of Open Access Journals (Sweden)

    Teddy Arrif

    2009-04-01

    Full Text Available Notre recherche se propose d’analyser les représentations et les pratiques spatiales des usagers du parc de Bercy situé dans le 12ème arrondissement de Paris. La littérature nous a conduit à poser l’hypothèse d’un lien fort entre ces représentations et pratiques d’une part, et la proximité résidentielle. L’enquête menée auprès des usagers du parc de Bercy a confirmé au moins partiellement notre hypothèse. Elle a permis également de pointer l’importance de l’accessibilité au parc notamment pour les usagers résidant hors de l’arrondissement. Enfin, elle confirme la nécessité de prendre en compte les pratiques et les représentations des habitants dans l’aménagement des parcs publics parisiens.Our research aims to analyze performances and practice space users Parc de Bercy in the 12th arrondissement of Paris. The literature has led us to ask the assumption of a strong link between these representations and practices on the one hand, and the nearby residential. The survey of users of the Parc de Bercy confirmed at least partially our hypothesis. It has also point to the importance of accessibility to the park especially for users outside the borough. Finally, it confirms the need to take into account the practices and representations of residents in the management of public parks in Paris.

  2. Pipeline engineering

    CERN Document Server

    Liu, Henry

    2003-01-01

    PART I: PIPE FLOWSINTRODUCTIONDefinition and Scope Brief History of PipelinesExisting Major PipelinesImportance of PipelinesFreight (Solids) Transport by PipelinesTypes of PipelinesComponents of PipelinesAdvantages of PipelinesReferencesSINGLE-PHASE INCOMPRESSIBLE NEWTONIAN FLUIDIntroductionFlow RegimesLocal Mean Velocity and Its Distribution (Velocity Profile)Flow Equations for One-Dimensional AnalysisHydraulic and Energy Grade LinesCavitation in Pipeline SystemsPipe in Series and ParallelInterconnected ReservoirsPipe NetworkUnsteady Flow in PipeSINGLE-PHASE COMPRESSIBLE FLOW IN PIPEFlow Ana

  3. The Dark Energy Survey Image Processing Pipeline

    Energy Technology Data Exchange (ETDEWEB)

    Morganson, E.; et al.

    2018-01-09

    The Dark Energy Survey (DES) is a five-year optical imaging campaign with the goal of understanding the origin of cosmic acceleration. DES performs a 5000 square degree survey of the southern sky in five optical bands (g,r,i,z,Y) to a depth of ~24th magnitude. Contemporaneously, DES performs a deep, time-domain survey in four optical bands (g,r,i,z) over 27 square degrees. DES exposures are processed nightly with an evolving data reduction pipeline and evaluated for image quality to determine if they need to be retaken. Difference imaging and transient source detection are also performed in the time domain component nightly. On a bi-annual basis, DES exposures are reprocessed with a refined pipeline and coadded to maximize imaging depth. Here we describe the DES image processing pipeline in support of DES science, as a reference for users of archival DES data, and as a guide for future astronomical surveys.

  4. Ecological effects of pipeline construction through deciduous forested wetlands, Midland County, Michigan

    Energy Technology Data Exchange (ETDEWEB)

    Zellmer, S.D. (Argonne National Lab., IL (United States)); Rastorfer, J.R. (Chicago State Univ., IL (United States). Dept. of Biological Sciences ANL/CSU Cooperative Herbarium, Chicago, IL (United States)); Van Dyke, G.D. (Trinity Christian Coll., Palos Heights, IL (United States). Dept. of Biology)

    1991-07-01

    Implementation of recent federal and state regulations promulgated to protect wetlands makes information on effects of gas pipeline rights-of-way (ROWs) in wetlands essential to the gas pipeline industry. This study is designed to record vegetational changes induced by the construction of a large-diameter gas pipeline through deciduous forested wetlands. Two second-growth forested wetland sites mapped as Lenawee soils, one mature and one subjected to recent selective logging, were selected in Midland County, Michigan. Changes in the adjacent forest and successional development on the ROW are being documented. Cover-class estimates are being made for understory and ROW plant species using 1 {times}1-m quadrats. Counts are also being made for all woody species with stems < 2 cm in diameter at breast height (dbh) in the same plots used for cover-class estimates. Individual stem diameters and species counts are being recorded for all woody understory and overstory plants with stems {ge}2 cm dbh in 10 {times} 10-m plots. Although analyses of the data have not been completed, preliminary analyses indicate that some destruction of vegetation at the ROW forest edge may have been avoidable during pipeline construction. Rapid regrowth of many native wetland plant species on the ROW occurred because remnants of native vegetation and soil-bearing propagules of existing species survived on the ROW after pipeline construction and seeding operations. 91 refs., 11 figs., 3 tabs.

  5. Ecological effects of pipeline construction through deciduous forested wetlands, Midland County, Michigan

    International Nuclear Information System (INIS)

    Zellmer, S.D.; Rastorfer, J.R.; Van Dyke, G.D.

    1991-07-01

    Implementation of recent federal and state regulations promulgated to protect wetlands makes information on effects of gas pipeline rights-of-way (ROWs) in wetlands essential to the gas pipeline industry. This study is designed to record vegetational changes induced by the construction of a large-diameter gas pipeline through deciduous forested wetlands. Two second-growth forested wetland sites mapped as Lenawee soils, one mature and one subjected to recent selective logging, were selected in Midland County, Michigan. Changes in the adjacent forest and successional development on the ROW are being documented. Cover-class estimates are being made for understory and ROW plant species using 1 x1-m quadrats. Counts are also being made for all woody species with stems < 2 cm in diameter at breast height (dbh) in the same plots used for cover-class estimates. Individual stem diameters and species counts are being recorded for all woody understory and overstory plants with stems ≥2 cm dbh in 10 x 10-m plots. Although analyses of the data have not been completed, preliminary analyses indicate that some destruction of vegetation at the ROW forest edge may have been avoidable during pipeline construction. Rapid regrowth of many native wetland plant species on the ROW occurred because remnants of native vegetation and soil-bearing propagules of existing species survived on the ROW after pipeline construction and seeding operations. 91 refs., 11 figs., 3 tabs

  6. phylotaR: An Automated Pipeline for Retrieving Orthologous DNA Sequences from GenBank in R

    Directory of Open Access Journals (Sweden)

    Dominic J. Bennett

    2018-06-01

    Full Text Available The exceptional increase in molecular DNA sequence data in open repositories is mirrored by an ever-growing interest among evolutionary biologists to harvest and use those data for phylogenetic inference. Many quality issues, however, are known and the sheer amount and complexity of data available can pose considerable barriers to their usefulness. A key issue in this domain is the high frequency of sequence mislabeling encountered when searching for suitable sequences for phylogenetic analysis. These issues include, among others, the incorrect identification of sequenced species, non-standardized and ambiguous sequence annotation, and the inadvertent addition of paralogous sequences by users. Taken together, these issues likely add considerable noise, error or bias to phylogenetic inference, a risk that is likely to increase with the size of phylogenies or the molecular datasets used to generate them. Here we present a software package, phylotaR that bypasses the above issues by using instead an alignment search tool to identify orthologous sequences. Our package builds on the framework of its predecessor, PhyLoTa, by providing a modular pipeline for identifying overlapping sequence clusters using up-to-date GenBank data and providing new features, improvements and tools. We demonstrate and test our pipeline’s effectiveness by presenting trees generated from phylotaR clusters for two large taxonomic clades: Palms and primates. Given the versatility of this package, we hope that it will become a standard tool for any research aiming to use GenBank data for phylogenetic analysis.

  7. 46 CFR 188.10-11 - Chemistry laboratory.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Chemistry laboratory. 188.10-11 Section 188.10-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OCEANOGRAPHIC RESEARCH VESSELS GENERAL PROVISIONS Definition of Terms Used in This Subchapter § 188.10-11 Chemistry laboratory. This term includes...

  8. Genotoxicity assessment of water sampled from R-11 reservoir by means of allium test

    Energy Technology Data Exchange (ETDEWEB)

    Bukatich, E.; Pryakhin, E. [Urals Research Center for Radiation Medicine (Russian Federation); Geraskin, S. [Russian Institute of Agricultural Radiology and Agroecology (Russian Federation)

    2014-07-01

    The Mayak PA was the first enterprise for the production of weapon-grade plutonium in Russia and it incorporates uranium-graphite reactors for plutonium production and radiochemical facilities for its separation. Radiochemical processing resulted in huge volumes of liquid radioactive wastes of different specific activities. To reduce the radionuclides release into the environment, a system of bypasses and ponds (the Techa Cascade Reservoirs system) to store low-activity liquid wastes has been constructed in the upper reaches of the Techa River. Currently, industrial reservoirs of Mayak PA contain over 350 million m{sup 3} of low-level radioactive liquid wastes with total activity over 7.4 x 10{sup 15} Bq. Reservoir R-11 is the final reservoir in the Techa Cascade Reservoirs system. The average specific activity of main radionuclides in the water of R-11 are: {sup 90}Sr - 1.4x10{sup 3} Bq/l; {sup 137}Cs - 3 Bq/l; {sup 3}H - 7x10{sup 2} Bq/l; α-emitting radionuclides - 2.6 x 10{sup -1} Bq/l. In our study the Allium-test was employed to estimate reservoir R-11 water genotoxic effects. In 2012, 3 water samples were collected in different parts of reservoir R-11. Water samples from the Shershnevskoye reservoir (artificial reservoir on the Miass River designed for Chelyabinsk city water supply) were used as natural control. Samples of distilled and bottled water were used as an additional laboratory control. The common onion, Allium cepa L. (Stuttgarter Riesen) was used. Healthy equal-sized bulbs were soaked for 24 hours at +4±2 deg. C to synchronize cell division. The bulbs were maintained in distilled water at +23 deg. C until roots have grown up to 2±1 mm length and then plunged into water samples. Control samples remained in distilled and bottled water as well as in water samples from the Shershnevskoye reservoir (natural control). Roots of the 18±3 mm length were randomly sampled and fixed in an alcohol/acetic acid mixture. For microscopic analysis, squashed

  9. Slurry pipelines: economic and political issues. A review

    Energy Technology Data Exchange (ETDEWEB)

    Banks, W. F.

    1977-11-30

    In the controversy surrounding the proposal to grant Federal eminent domain to coal-slurry pipelines, the fundamental issue is whether, on balance, such a grant is in the national interest. The principal subissues (peripheral issues) of economics, water supply and disposal, energy consumption and conservation, employment, safety, and environmental impact are analyzed. It is found that, as compared with unit trains, which are the only immediate alternative for movement of large quantities of Western coal, the pipelines are not against the national interest, except in the case of employment. It is concluded that, on balance, the pipelines are in the national interest and should be granted the power of Federal eminent domain.

  10. Le rôle de paysans mieux informés au Bénin | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    10 déc. 2010 ... Le défi : faire face au chaos climatique. Au Bénin, le secteur agricole constitue environ 36 % du PIB et représente près de 88 % des recettes d'exportation, en plus de satisfaire à la demande locale. Cependant, ce secteur est menacé. Loin d'être la seule cause du sous-développement, les bouleversements ...

  11. 49 CFR 195.452 - Pipeline integrity management in high consequence areas.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Pipeline integrity management in high consequence... Management § 195.452 Pipeline integrity management in high consequence areas. (a) Which pipelines are covered... that could affect a high consequence area, including any pipeline located in a high consequence area...

  12. In situ STM imaging of the structures of pentacene molecules adsorbed on Au(111).

    Science.gov (United States)

    Pong, Ifan; Yau, Shuehlin; Huang, Peng-Yi; Chen, Ming-Chou; Hu, Tarng-Shiang; Yang, Yawchia; Lee, Yuh-Lang

    2009-09-01

    In situ scanning tunneling microscope (STM) was used to examine the spatial structures of pentacene molecules adsorbed onto a Au(111) single-crystal electrode from a benzene dosing solution containing 16-400 microM pentacene. Molecular-resolution STM imaging conducted in 0.1 M HClO(4) revealed highly ordered pentacene structures of ( radical31 x radical31)R8.9 degrees , (3 x 10), ( radical31 x 10), and ( radical7 x 2 radical7)R19.1 degrees adsorbed on the reconstructed Au(111) electrode dosed with different pentacene solutions. These pentacene structures and the reconstructed Au(111) substrate were stable between 0.2 and 0.8 V [vs reversible hydrogen electrode, RHE]. Increasing the potential to E > 0.8 V lifted the reconstructed Au(111) surface and disrupted the ordered pentacene adlattices simultaneously. Ordered pentacene structures could be restored by applying potentials negative enough to reinforce the reconstructed Au(111). At potentials negative of 0.2 V, the adsorption of protons became increasingly important to displace adsorbed pentacene admolecules. Although the reconstructed Au(111) structure was not essential to produce ordered pentacene adlayers, it seemed to help the adsorption of pentacene molecules in a long-range ordered pattern. At room temperature (25 degrees C), approximately 100 pentacene molecules seen in STM images could rotate and align themselves to a neighboring domain in 10 s, suggesting that pentacene admolecules could be mobile on Au(111) under the STM imaging conditions of -150 mV in bias voltage and 1 nA in feedback current.

  13. New safety valve addresses environmental concerns

    International Nuclear Information System (INIS)

    Taylor, J.; Austin, R.

    1992-01-01

    This paper reports that Conoco Pipeline is using a unique relief valve to reduce costs while improving environmental protection at its facilities. Conoco Pipeline Co. Inc. began testing new relief valves in 1987 to present over-pressuring its pipelines while enhancing the safety, environmental integrity and profitability of its pipelines. Conoco worked jointly with Rupture Pin Technology Inc., Oklahoma City, to seek a solution to a series of safety, environmental, and operational risks in the transportation of crude oil and refined products through pipelines. Several of the identified problems were traced to a single equipment source: the reliability of rupture discs used at pipeline stations to relieve pressure by diverting flow to tanks during over-pressure conditions. Conoco's corporate safety and environmental policies requires solving problems that deal with exposure to hydrocarbon vapors, chemical spills or the atmospheric release of fugitive emissions, such as during rupture disc maintenance. The company had used rupture pin valves as vent relief devices in conjunction with development by Rick Austin of inert gas methods to protect the inner casing wall and outer carrier pipeline wall in pipeline road crossings. The design relies on rupture pin valves set at 5 psi to isolate vent openings from the atmosphere prior to purging the annular space between the pipeline and casing with inert gas to prevent corrosion. Speciality Pipeline Inspection and Engineering Inc., Houston, is licensed to distribute the equipment for the new cased-crossing procedure

  14. Outlook '98 - Gas and oil pipelines

    International Nuclear Information System (INIS)

    Curtis, B.

    1998-01-01

    Due to rising North American demand, especially by the United States, by the end of 1997 there were plans to build 15 new pipelines over the next three years, at an estimated cost of $17 billion. Canada''s proximity to the United States, combined with huge Canadian reserves, and the fact that Canada already supplies some 15 per cent of U.S. requirements, makes Canada the obvious choice for filling future demand. This explains why most, if not all, current pipeline expansion projects are targeting markets in the U.S. Market forces will determine which of the projects will actually go forward. From the point of view of the Canadian Energy Pipeline Association pipeline regulatory reform, pipeline safety, integrity and climate change will be the Association''s key concerns during 1998. To that end, the Association is cooperating with the National Energy Board in a multi-million dollar study of stress corrosion cracking. The Association has also developed a Manual of Recommended Practices for the use of member companies to assist them to tailor stress corrosion cracking practices to their own operations. Meeting Canada''s commitment at the Kyoto Conference for greenhouse gas emissions of six per cent below 1990 levels by the year 2008 to 2012 (in effect a 25 per cent reduction from the level anticipated in the year 2000), a very difficult task according to industry experts, is also among the high priority items on the pipeline industry''s agenda for 1998

  15. 77 FR 10415 - Standards for Business Practices for Interstate Natural Gas Pipelines

    Science.gov (United States)

    2012-02-22

    ...] Standards for Business Practices for Interstate Natural Gas Pipelines AGENCY: Federal Energy Regulatory... American Energy Standards Board (NAESB) applicable to natural gas pipelines.\\1\\ The Commission also... Quadrant (WGQ) of the North American Energy Standards Board (NAESB) applicable to natural gas pipelines...

  16. Risk from transport of gas by pipeline ''kokui-perm''

    International Nuclear Information System (INIS)

    Yelokhin, A.

    1998-01-01

    Full text of publication follows: the length of gas pipelines in Russia is 142 thousands km, 62 % are pipelines of the large diameters. Annually on gas pipelines in Russia there are more than 70 large accidents, more than 50 % from them is accompanied by ignition of gas. The average ecological looses from accident is: destruction arable lands - 78 hectares; removing from consumption agricultural soils - 6,2 hectares; destruction forests - 47,5 hectares. In work the reasons of accidents on gas pipelines of different diameters are analyzed. So, for pipelines a diameter of 1220 mm by the reasons of accidents are: marriage of civil and erection works - 39, 1 %; outside corrosion - 35,9 %; mechanical damages - 9,4 %; defects of pipes - 6,2 %; defects of the factory equipment - 1,6 %; nature disasters and other reasons - 7,8 %. In work the results of risk analysis on a gas pipeline 'Kokui - Perm' are analysed. The gas pipeline 'Kokui - Perm' passes near 22 towns and countries, crosses 15 highways, 2 rail ways, 15 rivers. In work the concrete recommendations for management of risk and safety of the population are given. (author)

  17. A novel modified electrode as GC/PPy-AuNPs-rGO/L-Cys/Ag@MUA nanostructure configuration for determination of CCP and CRP antibodies in human blood serum samples.

    Science.gov (United States)

    Babakhanian, Arash; Ehzari, Hosna; Kaki, Samineh; Hamidi, Zohreh

    2015-01-15

    In this work, silver nanoparticles were synthesized and stabilized with 11-mercaptoundecanoateanions to produce a new Ag@MUA core shell structure, and its utilizing for fabrication of a new sensing film. Gold nanoparticles (AuNPs) were electrochemically produced and simultaneously immobilized into the electropolymerized polypyrrole (PPy) film with the reduced graphene oxide (rGO). The Ag@MUA was then grafted to the surface of GC/PPy-AuNPs-rGO film using L-cysteine (L-Cys) linker agent and trifluoromethanesulfonic anhydride (TF2O), at ambient temperature and under the electrode stirring. The characterization of the sensor was studied by scanning electron microscopy, electrochemical impedance spectroscopy, cyclic and square wave voltammetry techniques. The utility of the modified electrode for clinical diagnosis has been successfully demonstrated by the analysis of human blood serums with a certified CRP and CCP content. Thus, the proposed sensor shows simple preparation, accuracy and precision in the analysis of cytochrome c protein (CCP) and C-reactive protein (CRP (with less side interferences. Copyright © 2014 Elsevier B.V. All rights reserved.

  18. Safety management of pipelines based on structural reliability: historical perspective and progress

    Energy Technology Data Exchange (ETDEWEB)

    Beck, Andre Teofilo; Bazan, Felipe Alexander Vargas [Universidade de Sao Paulo (USP), SP (Brazil); Mendes, Renato [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil); Donato, Guilherme [Petroleo Brasileiro S.A. (PETROBRAS/CENPES), Rio de Janeiro, RJ (Brazil). Centro de Pesquisas e Desenvolvimento; Gardiner, Michael [GL Noble Denton, Loughborough (United Kingdom)

    2012-07-01

    Since the early beginnings in the sixties and seventies, Structural Reliability theory has reached a mature stage encompassing solid theoretical developments and increasing practical applications. Structural reliability methods have permeated the engineering profession, finding applications in code calibration, structural optimization, life extension of existing structures, life-cycle management of infrastructure risks and costs, and so on. This review paper shows that the ground work for Reliability Based Design and Assessment (RBDA) of onshore pipeline systems is already developed. Hence, this allows the economic management of the risks involved in operation of pipeline systems. It is shown that RBDA is a rational tool to safely manage the operational life of pipeline systems, optimizing initial design and the expenditures in inspection and maintenance operations. (author)

  19. Influence of f(R) models on the existence of anisotropic self-gravitating systems

    Energy Technology Data Exchange (ETDEWEB)

    Yousaf, Z.; Sharif, M.; Bhatti, M.Z. [University of the Punjab, Department of Mathematics, Lahore (Pakistan); Ilyas, M. [University of the Punjab, Centre for High Energy Physics, Lahore (Pakistan)

    2017-10-15

    This paper aims to explore some realistic configurations of anisotropic spherical structures in the background of metric f(R) gravity, where R is the Ricci scalar. The solutions obtained by Krori and Barua are used to examine the nature of particular compact stars with three different modified gravity models. The behavior of material variables is analyzed through plots and the physical viability of compact stars is investigated through energy conditions. We also discuss the behavior of different forces, equation of state parameter, measure of anisotropy and Tolman-Oppenheimer-Volkoff equation in the modeling of stellar structures. The comparison from our graphical representations may provide evidence for the realistic and viable f(R) gravity models at both theoretical and the astrophysical scale. (orig.)

  20. 77 FR 43711 - Standards for Business Practices of Interstate Natural Gas Pipelines

    Science.gov (United States)

    2012-07-26

    ...; Order No. 587-V] Standards for Business Practices of Interstate Natural Gas Pipelines AGENCY: Federal... North American Energy Standards Board (NAESB) applicable to natural gas pipelines. In addition, based on... (WGQ) of the North American Energy Standards Board (NAESB) applicable to natural gas pipelines...