Science.gov

Sample records for bayou hebert prospect

  1. Geopressured geothermal resource potential of Miocene Bayou Hebert Prospect, Vermilion and Iberia parishes, Louisiana

    SciTech Connect

    McCulloh, R.P.; Pino, M.A.; Bebout, D.G.; Bachman, A.L.

    1981-01-01

    The Bayou Hebert prospect is a fault-bounded block of lower Miocene shale and sandstone which covers a 75-square-mile area in southeastern Vermilion and southwestern Iberia parishes, southwestern Louisiana. The average depth to the top of the geopressured zone is 12,500 feet. Detailed correlation of shale resistivity patterns on well logs from this area has delineated faults, local unconformities, and changes in thickness and facies of lithologic units. Most faults revealed by this method are associated with the boundary fault zones, but the few delineated in the interior of the prospect could reduce the volume of potential reservoir units. Cross sections show that the lower Miocene section thickens across growth faults by addition of new units as well as by expansion. Of the parameters of reservoir volume, salinity, temperature, and permeability, reservoir volume shows the most significant variation and indicates that the eastern fourth of the prospect has the most geopressured geothermal potential.

  2. Structural-stratigraphic setting of South Freshwater Bayou Prospect, Vermilion Parish, Louisiana

    SciTech Connect

    Cavanagh, T.; Pilger, R.H. Jr.; Bebout, D.G.; Bachman, A.L.

    1981-01-01

    The primary reservoir targets in South Freshwater Bayou Prospect are sands whose deposition appears to have been structurally controlled. The growth of a deep domal feature localized deepwater sand deposition on its flanks, thereby producing a significant thickness of subsequently geopressured sandstone. The area is, therefore, not only prospective in its own right, but provides an exploration model for other geopressured-geothermal prospects.

  3. VIEW NORTHWEST, EAST SIDE OF HEBERT'S 1949 HANGAR AND ONESTORY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW NORTHWEST, EAST SIDE OF HEBERT'S 1949 HANGAR AND ONE-STORY OFFICE, AND SOUTH SIDE OF HEBERT'S 1949 HANGAR - Capital City Airport, Capital City Aviation, North side of Grand River Avenue, Lansing, Ingham County, MI

  4. Big Bayou Creek and Little Bayou Creek Watershed Monitoring Program

    SciTech Connect

    Kszos, L.A.; Peterson, M.J.; Ryon; Smith, J.G.

    1999-03-01

    Biological monitoring of Little Bayou and Big Bayou creeks, which border the Paducah Site, has been conducted since 1987. Biological monitoring was conducted by University of Kentucky from 1987 to 1991 and by staff of the Environmental Sciences Division (ESD) at Oak Ridge National Laboratory (ORNL) from 1991 through March 1999. In March 1998, renewed Kentucky Pollutant Discharge Elimination System (KPDES) permits were issued to the US Department of Energy (DOE) and US Enrichment Corporation. The renewed DOE permit requires that a watershed monitoring program be developed for the Paducah Site within 90 days of the effective date of the renewed permit. This plan outlines the sampling and analysis that will be conducted for the watershed monitoring program. The objectives of the watershed monitoring are to (1) determine whether discharges from the Paducah Site and the Solid Waste Management Units (SWMUs) associated with the Paducah Site are adversely affecting instream fauna, (2) assess the ecological health of Little Bayou and Big Bayou creeks, (3) assess the degree to which abatement actions ecologically benefit Big Bayou Creek and Little Bayou Creek, (4) provide guidance for remediation, (5) provide an evaluation of changes in potential human health concerns, and (6) provide data which could be used to assess the impact of inadvertent spills or fish kill. According to the cleanup will result in these watersheds [Big Bayou and Little Bayou creeks] achieving compliance with the applicable water quality criteria.

  5. Taking Their Show on the Road: Becky Hebert & Siobhan Champ-Blackwell--National Network of Libraries of Medicine

    ERIC Educational Resources Information Center

    Library Journal, 2005

    2005-01-01

    They're two very different women with the same mission: outreach to medically underserved populations. Both work for the National Network of Libraries of Medicine. Becky Hebert (left) covers the Southeast/Atlantic region, and Siobhan Champ-Blackwell, the mid-continental region. They spend much of their lives on the road, exhibiting at minority…

  6. 88. (Credit CBF) Twelve Mile Bayou Pumping Station and force ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    88. (Credit CBF) Twelve Mile Bayou Pumping Station and force main for pumping water over levee and into the canal (Blind Bayou), March 1913. - McNeil Street Pumping Station, McNeil Street & Cross Bayou, Shreveport, Caddo Parish, LA

  7. 86. (Credit CBF) Canal between Twelve Mile Bayou and Cross ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    86. (Credit CBF) Canal between Twelve Mile Bayou and Cross Bayou in the bed of Blind Bayou (constructed 1901-1903). Photo taken in November of 1911. - McNeil Street Pumping Station, McNeil Street & Cross Bayou, Shreveport, Caddo Parish, LA

  8. 33 CFR 117.425 - Black Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Black Bayou. 117.425 Section 117.425 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.425 Black Bayou. The draws of the...

  9. 33 CFR 117.425 - Black Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Black Bayou. 117.425 Section 117.425 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.425 Black Bayou. The draws of the...

  10. 33 CFR 117.425 - Black Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Black Bayou. 117.425 Section 117.425 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.425 Black Bayou. The draws of the...

  11. 33 CFR 117.425 - Black Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Black Bayou. 117.425 Section 117.425 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.425 Black Bayou. The draws of the...

  12. 33 CFR 117.425 - Black Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Black Bayou. 117.425 Section 117.425 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.425 Black Bayou. The draws of the...

  13. 33 CFR 117.437 - Colyell Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Colyell Bayou. 117.437 Section 117.437 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.437 Colyell Bayou. The removable...

  14. 33 CFR 117.497 - Stumpy Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Stumpy Bayou. 117.497 Section 117.497 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.497 Stumpy Bayou. The removable span of...

  15. 33 CFR 117.437 - Colyell Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Colyell Bayou. 117.437 Section 117.437 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.437 Colyell Bayou. The removable...

  16. 33 CFR 117.497 - Stumpy Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Stumpy Bayou. 117.497 Section 117.497 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.497 Stumpy Bayou. The removable span of...

  17. 33 CFR 117.497 - Stumpy Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Stumpy Bayou. 117.497 Section 117.497 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.497 Stumpy Bayou. The removable span of...

  18. 33 CFR 117.437 - Colyell Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Colyell Bayou. 117.437 Section 117.437 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.437 Colyell Bayou. The removable...

  19. 33 CFR 117.967 - Greens Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Greens Bayou. 117.967 Section 117.967 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.967 Greens Bayou. The draw of the Port...

  20. 33 CFR 117.967 - Greens Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Greens Bayou. 117.967 Section 117.967 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.967 Greens Bayou. The draw of the Port...

  1. 33 CFR 117.957 - Cedar Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Cedar Bayou. 117.957 Section 117.957 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.957 Cedar Bayou. The draw of the Union...

  2. 33 CFR 117.987 - Taylor Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Taylor Bayou. 117.987 Section 117.987 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.987 Taylor Bayou. The draws of the Union...

  3. 33 CFR 117.965 - Cow Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Cow Bayou. 117.965 Section 117.965 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.965 Cow Bayou. The draws of the Orange...

  4. 33 CFR 117.987 - Taylor Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Taylor Bayou. 117.987 Section 117.987 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.987 Taylor Bayou. The draws of the Union...

  5. 33 CFR 117.959 - Chocolate Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Chocolate Bayou. 117.959 Section 117.959 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.959 Chocolate Bayou. The draw of the...

  6. 33 CFR 117.957 - Cedar Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Cedar Bayou. 117.957 Section 117.957 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.957 Cedar Bayou. The draw of the Union...

  7. 33 CFR 117.959 - Chocolate Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Chocolate Bayou. 117.959 Section 117.959 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.959 Chocolate Bayou. The draw of the...

  8. 33 CFR 117.957 - Cedar Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Cedar Bayou. 117.957 Section 117.957 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.957 Cedar Bayou. The draw of the Union...

  9. 33 CFR 117.965 - Cow Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Cow Bayou. 117.965 Section 117.965 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.965 Cow Bayou. The draws of the Orange...

  10. 33 CFR 117.987 - Taylor Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Taylor Bayou. 117.987 Section 117.987 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.987 Taylor Bayou. The draws of the Union...

  11. 33 CFR 117.965 - Cow Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Cow Bayou. 117.965 Section 117.965 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.965 Cow Bayou. The draws of the Orange...

  12. 33 CFR 117.955 - Buffalo Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Buffalo Bayou. 117.955 Section 117.955 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.955 Buffalo Bayou. (a) The draw of...

  13. 33 CFR 117.965 - Cow Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Cow Bayou. 117.965 Section 117.965 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.965 Cow Bayou. The draws of the Orange...

  14. 33 CFR 117.959 - Chocolate Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Chocolate Bayou. 117.959 Section 117.959 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.959 Chocolate Bayou. The draw of the...

  15. 33 CFR 117.957 - Cedar Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Cedar Bayou. 117.957 Section 117.957 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.957 Cedar Bayou. The draw of the Union...

  16. 33 CFR 117.955 - Buffalo Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Buffalo Bayou. 117.955 Section 117.955 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.955 Buffalo Bayou. (a) The draw of...

  17. 33 CFR 117.967 - Greens Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Greens Bayou. 117.967 Section 117.967 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.967 Greens Bayou. The draw of the Port...

  18. 33 CFR 117.967 - Greens Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Greens Bayou. 117.967 Section 117.967 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.967 Greens Bayou. The draw of the Port...

  19. 33 CFR 117.987 - Taylor Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Taylor Bayou. 117.987 Section 117.987 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.987 Taylor Bayou. The draws of the Union...

  20. 33 CFR 117.959 - Chocolate Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Chocolate Bayou. 117.959 Section 117.959 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.959 Chocolate Bayou. The draw of the...

  1. 33 CFR 117.955 - Buffalo Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Buffalo Bayou. 117.955 Section 117.955 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.955 Buffalo Bayou. (a) The draw of...

  2. 33 CFR 117.955 - Buffalo Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Buffalo Bayou. 117.955 Section 117.955 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.955 Buffalo Bayou. (a) The draw of...

  3. 33 CFR 117.957 - Cedar Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Cedar Bayou. 117.957 Section 117.957 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.957 Cedar Bayou. The draw of the Union...

  4. 33 CFR 117.959 - Chocolate Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Chocolate Bayou. 117.959 Section 117.959 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.959 Chocolate Bayou. The draw of the...

  5. 33 CFR 117.987 - Taylor Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Taylor Bayou. 117.987 Section 117.987 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.987 Taylor Bayou. The draws of the Union...

  6. 33 CFR 117.955 - Buffalo Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Buffalo Bayou. 117.955 Section 117.955 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.955 Buffalo Bayou. (a) The draw of...

  7. 33 CFR 117.967 - Greens Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Greens Bayou. 117.967 Section 117.967 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.967 Greens Bayou. The draw of the Port...

  8. 33 CFR 117.965 - Cow Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Cow Bayou. 117.965 Section 117.965 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Texas § 117.965 Cow Bayou. The draws of the Orange...

  9. 33 CFR 117.469 - Liberty Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Liberty Bayou. 117.469 Section 117.469 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.469 Liberty Bayou. The draw of...

  10. 33 CFR 117.469 - Liberty Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Liberty Bayou. 117.469 Section 117.469 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.469 Liberty Bayou. The draw of...

  11. 33 CFR 334.740 - Weekley Bayou, an arm of Boggy Bayou, Fla., at Eglin Air Force Base; restricted area.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Weekley Bayou, an arm of Boggy Bayou, Fla., at Eglin Air Force Base; restricted area. 334.740 Section 334.740 Navigation and Navigable... REGULATIONS § 334.740 Weekley Bayou, an arm of Boggy Bayou, Fla., at Eglin Air Force Base; restricted area....

  12. 33 CFR 334.740 - Weekley Bayou, an arm of Boggy Bayou, Fla., at Eglin Air Force Base; restricted area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Weekley Bayou, an arm of Boggy Bayou, Fla., at Eglin Air Force Base; restricted area. 334.740 Section 334.740 Navigation and Navigable... REGULATIONS § 334.740 Weekley Bayou, an arm of Boggy Bayou, Fla., at Eglin Air Force Base; restricted area....

  13. 77 FR 42637 - Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-20

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA AGENCY: Coast... (BNSF) Railway Company swing span bridge across ] Bayou Boeuf, mile 10.2, at Amelia, St. Mary Parish... across Bayou Boeuf, mile 10.2, at Amelia, St. Mary Parish, Louisiana. The bridge provides no...

  14. 77 FR 69564 - Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-20

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA AGENCY: Coast... (BNSF) Railway Company swing span bridge across Bayou Boeuf, mile 10.2, at Amelia, St. Mary Parish... across Bayou Boeuf, mile 10.2, at Amelia, St. Mary Parish, Louisiana. The bridge provides no...

  15. 2010 FIRST Robotics Bayou Regional Tournament

    NASA Technical Reports Server (NTRS)

    2010-01-01

    Members of the robotics team from St. Patrick Catholic High School in Biloxi, Miss., focus on guiding their robot on the 2010 Bayou Regional playing field during the annual FIRST (For Inspiration and Recognition of Science and Technology) Robotics competition March 5-6. The event attracted 36 teams from eight states, including 25 teams from Louisiana and Mississippi high schools. The tournament was one of dozens of FIRST tournaments scheduled around the country in advance of the national robotics championship in Atlanta in April. The Bayou Regional competition was held at the Alario Center in Westwego, La.

  16. Health assessment for Bayou Sorrel, Bayou Sorrel, Louisiana, Region 6. CERCLIS No. LAD980745541. Final report

    SciTech Connect

    Not Available

    1989-04-06

    The Bayou Sorrel National Priorities List Site is located in Iberville Parish, Louisiana, 6 miles northwest of the community of Bayou Sorrel. The population near Bayou Sorrel is a seasonal one. Fishing, hunting, and vegetable gardens provide a large portion of the diet for many of the inhabitants in the area. The waste types disposed of at Bayou Sorrel included process wastes from pesticide and herbicide manufacture, sulfide-containing wastes, and spent wash solutions from boiler cleaning. The Record of Decision signed November 1986 mandated several remedial actions which included installation of: a runoff control system; caps meeting Resource Conservation and Recovery Act specifications; a sand/geofabric drainage layer and collection system; a gas ventilation system; slurry walls around the former landfill area and Pond 4; a fence around all capped areas; and a ground-water monitoring system.

  17. 2010 FIRST Robotics Bayou Regional Tournament

    NASA Technical Reports Server (NTRS)

    2010-01-01

    Student-built robots maneuver the course during the 2010 Bayou Regional FIRST (For Inspiration and Recognition of Science and Technology) Robotics competition in Westwego on March 5-6. The annual competition drew 36 high school teams from eight states. NASA's John C. Stennis Space Center supports FIRST Robotics by providing financing, mentors and training, as well as competition judges and referees, audiovisual staff and other volunteer personnel.

  18. 75 FR 52937 - Turtle Bayou Gas Storage Company, LLC; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-30

    ... Energy Regulatory Commission Turtle Bayou Gas Storage Company, LLC; Notice of Application August 20, 2010. Take notice that on August 6, 2010, Turtle Bayou Gas Storage Company, LLC (Turtle Bayou), One Office... caverns and related facilities to be located in Chambers and Liberty Counties, Texas. Turtle Bayou...

  19. Evaluation of potential geopressure geothermal test sites in southern Louisiana

    SciTech Connect

    Bassiouni, Z.

    1980-04-01

    Six geopressured-geothermal prospects in southern Louisiana were studied in detail to assess their potential use as test sites for the production of geopressure-geothermal energy. Each of the six sites contains substantial quantities of energy. Three of these prospects, Grand Lake, Lake Theriot, and Bayou Hebert, appear to be suitable for a test site. A summary of the findings is presented.

  20. 33 CFR 117.471 - Little Black Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Little Black Bayou. 117.471 Section 117.471 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.471 Little Black Bayou. The draw...

  1. 33 CFR 117.471 - Little Black Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Little Black Bayou. 117.471 Section 117.471 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.471 Little Black Bayou. The draw...

  2. 33 CFR 117.471 - Little Black Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Little Black Bayou. 117.471 Section 117.471 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.471 Little Black Bayou. The draw...

  3. 33 CFR 117.471 - Little Black Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Little Black Bayou. 117.471 Section 117.471 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.471 Little Black Bayou. The draw...

  4. 33 CFR 117.471 - Little Black Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Little Black Bayou. 117.471 Section 117.471 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.471 Little Black Bayou. The draw...

  5. 78 FR 10523 - Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-14

    ... (BNSF) Railway Company swing span bridge across Bayou Boeuf, mile 10.2, at Amelia, St. Mary Parish... operating schedule of the swing span railroad bridge across Bayou Boeuf, mile 10.2, at Amelia, St. Mary..., the bridge currently opens on signal for the passage of vessels. This deviation allows the swing...

  6. 33 CFR 117.439 - Des Allemands Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Des Allemands Bayou. 117.439... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.439 Des Allemands Bayou. (a) The draw of the S631 bridge, mile 13.9 at Des Allemands, shall open on signal if at least four hours notice...

  7. 33 CFR 117.439 - Des Allemands Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Des Allemands Bayou. 117.439... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.439 Des Allemands Bayou. (a) The draw of the S631 bridge, mile 13.9 at Des Allemands, shall open on signal if at least four hours notice...

  8. 33 CFR 117.439 - Des Allemands Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Des Allemands Bayou. 117.439... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.439 Des Allemands Bayou. (a) The draw of the S631 bridge, mile 13.9 at Des Allemands, shall open on signal if at least four hours notice...

  9. 77 FR 27115 - Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-09

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA AGENCY: Coast... (BNSF) Railway Company swing span bridge across Bayou Boeuf, mile 10.2, at Amelia, St. Mary Parish... Boeuf, mile 10.2, at Amelia, St. Mary Parish, Louisiana. The bridge provides no vertical clearance...

  10. 33 CFR 117.443 - Du Large Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Du Large Bayou. 117.443 Section 117.443 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.443 Du Large Bayou. The draw of...

  11. 77 FR 57020 - Drawbridge Operation Regulation; Carlin Bayou, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-17

    ... INFORMATION: Table of Acronyms CFR Code of Federal Regulations DHS Department of Homeland Security FR Federal... ``Drawbridge Operation Regulation; Carlin Bayou, LA'' in the Federal Register (77 FR 29927). We received no... Louisiana and Delta Railroad (LDRR) vertical lift bridge across Carlin Bayou in Delcambre, Iberia...

  12. The Bayou Choctaw Oil Shipment Test

    SciTech Connect

    Bauer, S.J.; Ballard, S.; Barker, G.T.

    1994-05-01

    In early October of 1993, an oil shipment of about 1 million barrels was made from the Bayou Choctaw Strategic Petroleum Reserve storage facility to St. James Terminal. During the shipment, oil temperatures and soil temperatures along the pipeline were recorded. The field data were used to make estimations of soil thermal properties, thermal conductivity and specific heat. These data were also used to validate and calibrate a heat transfer code, OILPIP, which has been used to calculate pipeline cooling of oil during a drawdown.

  13. 2. VIEW NORTHEAST AT NORTHERN BANK OF BAYOU LAFOURCHE; M/V ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. VIEW NORTHEAST AT NORTHERN BANK OF BAYOU LAFOURCHE; M/V 'FOX' LIES UNDER TREES AT CENTER OF PHOTOGRAPH - Motorized Sailing Vessel "Fox", Beached on East Bank ofBayou Lafourche, Larose, Lafourche Parish, LA

  14. 77 FR 35897 - Drawbridge Operation Regulation; Lafourche Bayou, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-15

    ... Waterway (GIWW). DATES: The comment period for the proposed rule published April 16, 2012, at 77 FR 22520..., 2008, issue of the Federal Register (73 FR 3316). 4. Public Meeting We do not now plan to hold a public..., ``Drawbridge Operation Regulation; Lafourche Bayou, LA,'' in the Federal Register (77 FR 22520). The...

  15. 77 FR 29927 - Drawbridge Operation Regulation; Carlin Bayou, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-21

    ..., 2008, issue of the Federal Register (73 FR 3316). ] 4. Public Meeting We do not now plan to hold a... SECURITY Coast Guard 33 CFR Part 117 RIN 1625-AA09 Drawbridge Operation Regulation; Carlin Bayou, LA AGENCY... human environment because it simply promulgates the operating regulations or procedures for...

  16. 77 FR 22520 - Drawbridge Operation Regulation; Lafourche Bayou, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-16

    ... Federal Register (73 FR 3316). Public Meeting We do not now plan to hold a public meeting. But you may... SECURITY Coast Guard 33 CFR Part 117 RIN 1625-AA09 Drawbridge Operation Regulation; Lafourche Bayou, LA... of materials, performance, design, or operation; test methods; sampling procedures; and...

  17. 76 FR 52567 - Drawbridge Operation Regulation; Bonfouca Bayou, Slidell, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-23

    ... Federal Register (74 FR 67974). No comments were received. No public hearing was requested and none was... governing the operation of the State Route (SR) 433 Swing Span Bridge across Bonfouca Bayou, mile 7.0, at...) requested that the operating regulation of the SR 433 swing span bridge be changed in order to allow...

  18. 77 FR 46286 - Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-03

    ... from regulations in the Federal Register (77 FR 42637). The BNSF Railway Company requested this... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Bayou Boeuf, Amelia, LA AGENCY: Coast... Boeuf, mile 10.2, at Amelia, St. Mary Parish, Louisiana. The modification of the date is necessary...

  19. Challenges of watershed implementation plans: Joe's bayou watershed

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Joe’s Bayou watershed is located in the Ouachita River Basin, Louisiana and covers a drainage area of about 173 square kilometers. This watershed is listed on the §303(d) List for Louisiana as impaired for dissolved oxygen (DO) and nutrients. The TMDL report recommends a reduction of 89% of total no...

  20. 75 FR 63714 - Drawbridge Operation Regulation; Des Allemands Bayou, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-18

    ... Burlington Northern Santa Fe Railway swing bridge across Des Allemands Bayou, mile 14.0, in St. Charles and Lafourche Parishes, Louisiana. The deviation is necessary to perform extensive rehabilitation to the bridge. This deviation allows the bridge to remain closed to navigation completely from January 18,...

  1. Streamflow, specific-conductance, and temperature data for Bayou and Little Bayou Creeks near Paducah, Kentucky, August 15 and 16, 1989

    USGS Publications Warehouse

    Evaldi, R.D.; McClain, D.L.

    1989-01-01

    Discharge, temperature, and specific conductance measurements were made August 15 and 16, 1989, at 74 main channel sites and seven flowing tributaries on Bayou and Little Bayou Creeks, Kentucky in the vicinity of the Paducah Gaseous Diffusion Plant. These measurements were made during base flow conditions to provide data for analysis of the interaction of surface and groundwater. The discharge of Bayou Creek was 0.30 cfs at the most upstream site, and 5.8 cfs at the most downstream site. Total measured tributary inflow of Bayou Creek was 5.7 cfs. Specific conductance values in the Bayou Creek watershed ranged from 208 to 489 microsiemens/cm, and water temperature ranged from 20.0 to 32.6 C. The discharge of Little Bayou Creek was 0.65 cfs at the most upstream site, and 1.8 cfs at the most downstream site. Total measured tributary inflow of Little Bayou Creek was 0.38 cfs. Specific conductance values in the Little Bayou Creek watershed ranged from 211 to 272 microsiemens/cm, and water temperature ranged from 14.5 to 24.9 C. (USGS)

  2. Microseismic monitoring of Chocolate Bayou, Texas: the Pleasant Bayou No. 2 geopressured/geothermal energy test well program

    SciTech Connect

    Mauk, F.J.; Kimball, B.; Davis, R.A.

    1984-01-01

    The Brazoria seismic network, instrumentation, design, and specifications are described. The data analysis procedures are presented. Seismicity is described in relation to the Pleasant Bayou production history. Seismicity originating near the chemical plant east of the geopressured/geothermal well is discussed. (MHR)

  3. Microseismic monitoring of Chocolate Bayou Texas: the Pleasant Bayou No. 2 geopressured/geothermal energy test-well program. 1981 annual progress report

    SciTech Connect

    Mauk, F.J.

    1982-01-01

    To investigate normal ambient seismicity as well as potentially enhanced seismic activity induced by brine production, a seismic monitoring program has been conducted in the vicinity of the Chocolate Bayou geopressured test well (the Pleasant Bayou No. 2) since September 1978. The Pleasant Bayou No. 2 well has been completed and perforated at depths of 14,467-14,707 feet (4464.4-4482.7m). The brines produced from the Pleasant Bayou No. 2 well are reinjected at a depth of 6226-6538 feet (1897.7-1992.8m) in the Pleasant Bayou No. 1 well. The seismic monitoring network and results obtained from January through November 1981 are described.

  4. Testing of the Pleasant Bayou Well through October 1990

    SciTech Connect

    Randolph, P.L.; Hayden, C.G.; Mosca, V.L.; Anhaiser, J.L.

    1992-08-01

    Pleasant Bayou location was inactive from 1983 until the cleanout of the production and disposal wells in 1986. The surface facilities were rehabilitated and after shakedown of the system, additional repair of wellhead valves, and injection of an inhibitor pill, continuous long-term production was started in 1988. Over two years of production subsequent to that are reviewed here, including: production data, brine sampling and analysis, hydrocarbon sampling and analysis, solids sampling and analysis, scale control and corrosion monitoring and control.

  5. Brazoria County Re-Leveling Pleasant Bayou Geopressured Well Site

    SciTech Connect

    1984-07-01

    The purpose is to conduct first order leveling surveys as part of an ongoing environmental monitoring program for geopressured-geothermal test wells. The scope is to Conduct First Order, Class I, leveling to monitor subsidence of previously installed and leveled bench marks, established by the National Geodetic Survey (NGS) and Vernon F. Meyer and Associates, Inc., in the area of the Pleasant Bayou geopressured test well. All leveling surveys to conform to NGS standards and specifications.

  6. 77 FR 69562 - Drawbridge Operation Regulation; Barataria Bayou, Lafitte, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-20

    ...The Coast Guard has issued a temporary deviation from the operating schedule that governs the LA 302 (Kerner) swing span bridge across the Barataria Bayou, mile 35.7, at Lafitte, Louisiana. The deviation is necessary to allow a movie production crew to safely film at the bridge site. This deviation allows the bridge to remain closed to navigation for 12 hours on two separate...

  7. 75 FR 9404 - Turtle Bayou Gas Storage Company, LLC; Amended Notice of Intent To Prepare an Environmental...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-02

    ... Energy Regulatory Commission Turtle Bayou Gas Storage Company, LLC; Amended Notice of Intent To Prepare an Environmental Assessment for the Planned Turtle Bayou Natural Gas Storage Project and Request for... environmental assessment (EA) that will discuss the environmental impacts of the Turtle Bayou Natural...

  8. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point...

  9. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point...

  10. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point...

  11. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point...

  12. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point...

  13. Pleasant Bayou Geopressured-Geothermal Reservoir Analysis - January 1991

    SciTech Connect

    Riney, T.D.

    1991-01-01

    Many sedimentary basins contain formations with pore fluids at pressures higher than hydrostatic value; these formations are called geopressured. The pore pressure is generally well in excess of hydrostatic and the fluids vary in scalinity, temperature, and dissolved methane. As part of its program to define the magnitude and recoverability of the geopressured-geothermal energy resource, the US Department of Energy has drilled and tested deep wells in geopressured formations in the Texas-Louisiana Gulf Coast region. Geological information for the Pleasant Bayou geopressured geothermal resource is most extensive among the reservoirs tested. Earlier testing of the DOE well (Pleasant Bayou Well No.2) was conducted in several phases during 1979-1983. Long-term testing was resumed in May 1988 and is currently in progress. This report summarizes the pertinent field and laboratory test data available through December 31, 1990. A numerical reservoir simulator is employed as a tool for synthesizing and integrating the reservoir information, formation rock and fluid properties data from laboratory tests, well data from the earlier testing (1979-1983), and the ongoing long-term production testing (1988-1990) of Pleasant Bayou Well No.2. A reservoir simulation model has been constructed which provides a detailed match to the well test history to date. This model is constructed within a geologic framework described by the Texas Bureau of Economic Geology and relies heavily on the pressure transient data from the 1980 Reservoir Limits Test in conjunction with the 1988-1990 production testing.

  14. 76 FR 16294 - Drawbridge Operation Regulation; Buffalo Bayou, Mile 4.3, Houston, Harris County, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-23

    ... SECURITY Coast Guard 33 CFR Part 117 RIN 1625-AA09 Drawbridge Operation Regulation; Buffalo Bayou, Mile 4.3... removing the existing drawbridge operation regulation for the drawbridge across Buffalo Bayou, mile 4.3... provide the 30 day notice period before its effective date. This rule removes the draw...

  15. Real-Time GPS Network Monitors Bayou Corne Sinkhole Event

    NASA Astrophysics Data System (ADS)

    Kent, Joshua D.; Dunaway, Larry

    2013-10-01

    In August 2012 a sinkhole developed in the swampy marshland near the rural community of Bayou Corne in Assumption Parish (i.e., county), Louisiana. The area was evacuated, and some residents have still not been able to return. The sinkhole—which now measures about 450 meters wide and is continuing to grow—is being monitored by multiple systems, including four rapid-response GPS continuously operating reference stations (CORS) called CORS911. The real-time data provided by this system are used by scientists and decision makers to help ensure public safety.

  16. Bioavailability Assessment of a Contaminated Field Sediemtn from Patrick Bayou, Texas: TIE and Equilibrium Partitioning

    EPA Science Inventory

    Contaminated sediments are commonly found in urbanized harbors. Remediation is often necessary and diagnosing the cause of sediment toxicity becomes imperative. In the present study, sediments from Patrick Bayou, Texas were subjected to initial toxicity testing. All sediments ...

  17. Interpretation of remote sensing data in the Bayou Lafourche Delta of south Louisiana

    NASA Technical Reports Server (NTRS)

    Whitehurst, C. A.

    1975-01-01

    Initial efforts were directed toward a comprehensive ground truth program for the Bayou Lafourche Delta. The impact of transportation systems on the marsh environment, impounded marsh areas, proposed jetty systems at Belle Pass, Louisiana, and erosion and sediment transport in the southwestern canal, Lafourche Parish, Louisiana are studied. The use of color IR imagery for a vegetation study of spoil banks in the Bayou Lafourche Region is also discussed.

  18. Bayou virus-associated hantavirus pulmonary syndrome in Eastern Texas: identification of the rice rat, Oryzomys palustris, as reservoir host.

    PubMed Central

    Torrez-Martinez, N.; Bharadwaj, M.; Goade, D.; Delury, J.; Moran, P.; Hicks, B.; Nix, B.; Davis, J. L.; Hjelle, B.

    1998-01-01

    We describe the third known case of hantavirus pulmonary syndrome (HPS) due to Bayou virus, from Jefferson County, Texas. By using molecular epidemiologic methods, we show that rice rats (Oryzomys palustris) are frequently infected with Bayou virus and that viral RNA sequences from HPS patients are similar to those from nearby rice rats. Bayou virus is associated with O. palustris; this rodent appears to be its predominant reservoir host. PMID:9452404

  19. Features of Bayou Choctaw SPR caverns and internal structure of the salt dome.

    SciTech Connect

    Munson, Darrell E.

    2007-07-01

    The intent of this study is to examine the internal structure of the Bayou Choctaw salt dome utilizing the information obtained from graphical representations of sonar survey data of the internal cavern surfaces. Many of the Bayou Choctaw caverns have been abandoned. Some existing caverns were purchased by the Strategic Petroleum Reserve (SPR) program and have rather convoluted histories and complex cavern geometries. In fact, these caverns are typically poorly documented and are not particularly constructive to this study. Only two Bayou Choctaw caverns, 101 and 102, which were constructed using well-controlled solutioning methods, are well documented. One of these was constructed by the SPR for their use while the other was constructed and traded for another existing cavern. Consequently, compared to the SPR caverns of the West Hackberry and Big Hill domes, it is more difficult to obtain a general impression of the stratigraphy of the dome. Indeed, caverns of Bayou Choctaw show features significantly different than those encountered in the other two SPR facilities. In the number of abandoned caverns, and some of those existing caverns purchased by the SPR, extremely irregular solutioning has occurred. The two SPR constructed caverns suggest that some sections of the caverns may have undergone very regular solutioning to form uniform cylindrical shapes. Although it is not usually productive to speculate, some suggestions that point to the behavior of the Bayou Choctaw dome are examined. Also the primary differences in the Bayou Choctaw dome and the other SPR domes are noted.

  20. Bubbles, Bubbles, Tremors & Trouble: The Bayou Corne Sinkhole

    NASA Astrophysics Data System (ADS)

    Nunn, J. A.

    2013-12-01

    In May 2012, thermogenic methane bubbles were first observed in Bayou Corne in Assumption Parish, Louisiana. As of July 2013, ninety one bubbling sites have been identified. Gas was also found in the top of the Mississippi River Alluvial Aquifer (MRAA) about 125 ft below the surface. Vent wells drilled into the MRAA have flared more 16 million SCF of gas. Trace amounts of hydrogen sulfide also have been detected. Bayou Corne flows above the Napoleonville salt dome which has been an active area for oil and gas exploration since the 1920s. The dome is also a site of dissolution salt mining which has produced large caverns with diameters of up to 300 ft and heights of 2000 ft. Some caverns are used for storage of natural gas. Microseismic activity was confirmed by an Earthscope seismic station in White Castle, LA in July 2012. An array of microseismic stations set up in the area recorded more than 60 microseismic events in late July and early August, 2012. These microseismic events were located on the western side of the dome. Estimated focal depths are just above the top of salt. In August 2012, a sinkhole developed overnight just to the northwest of a plugged and abandoned brine filled cavern (see figure below). The sinkhole continues to grow in area to more than 20 acres and has consumed a pipeline right of way. The sinkhole is more than 750 ft deep at its center. Microseismic activity was reduced for several months following the formation of the sinkhole. Microseismic events have reoccurred episodically since then with periods of frequent events preceding slumping of material into the sinkhole or a 'burp' where fluid levels in the sinkhole drop and then rebound followed by a decrease in microseismic activity. Some gas and/or oil may appear at the surface of the sinkhole following a 'burp'. Very long period events also have been observed which are believed to be related to subsurface fluid movement. A relief well drilled into the abandoned brine cavern found that

  1. Three dimensional simulation for bayou choctaw strategic petroleum reserve (SPR).

    SciTech Connect

    Ehgartner, Brian L. (Sandia National Laboratories, Albuquerque, NM); Park, Byoung Yoon; Lee, Moo Yul

    2006-12-01

    Three dimensional finite element analyses were performed to evaluate the structural integrity of the caverns located at the Bayou Choctaw (BC) site which is considered a candidate for expansion. Fifteen active and nine abandoned caverns exist at BC, with a total cavern volume of some 164 MMB. A 3D model allowing control of each cavern individually was constructed because the location and depth of caverns and the date of excavation are irregular. The total cavern volume has practical interest, as this void space affects total creep closure in the BC salt mass. Operations including both cavern workover, where wellhead pressures are temporarily reduced to atmospheric, and cavern enlargement due to leaching during oil drawdowns that use water to displace the oil from the caverns, were modeled to account for as many as the five future oil drawdowns in the six SPR caverns. The impacts on cavern stability, underground creep closure, surface subsidence, infrastructure, and well integrity were quantified.

  2. 77 FR 23118 - Annual Marine Events in the Eighth Coast Guard District, Blessing of the Fleet; Bayou La Batre...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-18

    ... SECURITY Coast Guard 33 CFR Part 100 Annual Marine Events in the Eighth Coast Guard District, Blessing of the Fleet; Bayou La Batre; Bayou La Batre, AL AGENCY: Coast Guard, DHS. ACTION: Notice of enforcement of regulation. SUMMARY: The Coast Guard will enforce Special Local Regulations for the Blessing...

  3. Bayou Choctaw Caverns 15 and 17 web analysis

    SciTech Connect

    Ehgartner, B.

    1993-01-01

    The relatively thin web of salt that separates Bayou Choctaw Caverns 15 and 17 was evaluated using the finite-element method. The stability calculations provided insight as to whether or not any operationrestrictions or recommendations are necessary. Because of the uncertainty in the exact dimensions of the salt web, various web thicknesses were examined under different operating scenarios that included individual cavern workovers and drawdowns. Cavern workovers were defined by a sudden drop in the oil side pressure at the wellhead to atmospheric. Workovers represent periods of low cavern pressure. Cavern drawdowns were simulated by enlargening the cavern diameters, thus decreasing the thickness of the web. The calculations predict that Cavern 15 dominates the behavior of the web because of its larger diameter. Thus, giventhe choice of caverns, Cavern 17 should be used for oil withdrawal in order to minimize the adverse impacts on web resulting from pressure drops or cavern enlargement. From a stability point of view, maintaining normal pressures in Cavern 15 was found to be more important than operating the caverns as a gallery where both caverns are maintained at the same pressure. However, during a workover, it may be prudent to operate the caverns under similar pressures to avoid the possibility of a sudden pressure surge at the wellhead should the web fail.

  4. Time of travel of solutes in Buffalo Bayou and selected tributaries, Houston, Texas, August 1999

    USGS Publications Warehouse

    East, Jeffery W.; Schaer, Jasper D.

    2000-01-01

    The U.S. Geological Survey (USGS), in cooperation with the U.S. Environmental Protection Agency, conducted a time-of-travel study in the Buffalo Bayou watershed during low flow in August 1999. The study was done as part of the U.S. Environmental Protection Agency Environmental Monitoring for Public Access and Community Tracking (EMPACT) program. The EMPACT program was designed for the U.S. Environmental Protection Agency to work with communities to “make timely, accurate, and understandable environmental information available to millions of people in the largest metropolitan areas across the country.” (U.S. Environmental Protection Agency, 2000). Buffalo Bayou, located in Houston, Texas, was chosen as a pilot project because it is a frequently used recreational water source, it has many water-treatment facilities located along its stream segments, and it has a history of water-quality problems (Houston-Galveston Area Council, 2000). One component of the pilot project is to develop a water-quality simulation model that can be used to assess the effects of noncompliance events on Buffalo Bayou. Because accurate estimates of time of travel during low flow are required to develop the model, the time of travel of solutes in Buffalo Bayou and selected tributaries was determined using dye tracing methods. The study was conducted during low flow in a 38.7-mile reach of Buffalo Bayou, a 9.6-mile reach of Whiteoak Bayou, a 5.9-mile reach of Mason Creek, and a 6.6-mile reach of Bear Creek. Efforts to determine the time of travel in a 7.5-mile reach of Horsepen Creek were unsuccessful. This report explains the approach used to conduct the study and presents the results of the study

  5. Role of pressure, temperature, salinity, lithology, and structure in hydrocarbon accumulation in Constance Bayou, Deep Lake, and southeast Little Pecan Lake Fields, Cameron Parish, Louisiana

    SciTech Connect

    Harrison, F.W. III

    1980-01-01

    Pressure, temperature, salinity, lithology, and structural studies indicate that hydrocarbons in Deep Lake, Constance Bayou, and Little Pecan Lake Fields, were generated in the shale beds of the hard geopressured zone and migrated upward along major growth faults. The hydrocarbons were originally dissolved in hot fresh pore water and came out of solution in the overlying low temperature and pressure zones, accumulating in the sand beds of the first structural traps encountered. By examining regional cross sections and anomaly maps, fluid escape routes taken by the hot pore water containing dissolved hydrocarbons can be identified. Areas below which a vertical flush of hot fresh pore water from the hard geopressured zone has occurred have 3 identifying characteristics: low fluid pressures, high formation water salinity values, and presence of residual high pressure areas. These areas are considered to be highly prospective places to search for hydrocarbon accumulations.

  6. Allegations of diversion and substitution of crude oil. Bayou Choctaw Storage Site, Strategic Petroleum Reserve

    SciTech Connect

    Not Available

    1984-03-30

    Investigation did not substantiate allegations that crude oil destined for the Strategic Petroleum Reserve storage site at Bayou Choctaw was diverted to private use and some other material substituted in its place. However, recommendations are made for handling intermediate transport and storage systems for crude oil to tighten security aspects. (PSB)

  7. 33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  8. 33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  9. 33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  10. 33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  11. 33 CFR 207.185 - Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Taylors Bayou, Tex., Beaumont Navigation District Lock; use, administration, and navigation. 207.185 Section 207.185 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  12. RAINFALL AND RUNOFF AS A SOURCE OF ORGANIC CARBON ADDITIONS TO BAYOU TEXAR, FLORIDA

    EPA Science Inventory

    Rainfall and Runoff as a Source of Organic Carbon Additions to Bayou Texar, Florida (Abstract). To be presented at the16th Biennial Conference of the Estuarine Research Foundation, ERF 2001: An Estuarine Odyssey, 4-8 November 2001, St. Pete Beach, FL. 1 p. (ERL,GB R852).

    T...

  13. THE EFFECT OF PRECIPITATION ON ORGANIC CARBON COMPONENTS IN BAYOU TEXAR, FLORIDA

    EPA Science Inventory

    This study examined the relationship between precipitation and organic carbon in Bayou Texar, part of Florida's Pensacola Bay system in the northern Gulf of Mexico. Weekly samples were collected from five stations between March to June, 1999. Additionally, samples were taken befo...

  14. 77 FR 57492 - Drawbridge Operation Regulation; Grosse Tete Bayou, Iberville Parish, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-18

    ... FR Federal Register NPRM Notice of Proposed Rulemaking Sec. Section Symbol U.S.C. United States Code... Federal Register (FR). The railroad bridge has had no openings in 61 years. It has effectively been a... the Grosse Tete Bayou, mile 14.7, in Iberia Parish, LA has been modified to a fixed bridge;...

  15. Contaminant exposure of barn swallows nesting on Bayou d'Inde, Calcasieu Estuary, Louisiana, USA.

    USGS Publications Warehouse

    Custer, T.W.; Custer, Christine M.; Goatcher, B.L.; Melancon, M.J.; Matson, C.W.; Bickham, J.W.

    2006-01-01

    Current and historical point source discharges, storm water runoff, and accidental spills have contaminated the water, sediment, and biota within the Calcasieu Estuary in southwestern Louisiana. In 2003, barn swallow (Hirundo rustica) eggs and nestlings were collected beneath two bridges that cross Bayou d'Inde, the most contaminated waterway within the Calcasieu Estuary. Samples were also collected from a bridge over Bayou Teche, a reference site in south central Louisiana. Polychlorinated biphenyl (PCB) concentrations in barn swallow eggs and nestlings were significantly higher at the downstream site on Bayou d'Inde (2.8 micro g/g PCBs in eggs and 1.5 micro g/g PCBs in nestlings) than at the other two sites (< 0.2 micro g/g PCBs in eggs and nestlings at both sites). Ethoxyresorufin-O-dealkylase activity in nestling livers was significantly higher at the downstream site on Bayou d'Inde (50 pmol/min/mg) compared to the other two locations (24 pmol/min/mg, each), probably because of exposure to PCBs. Polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran concentrations in eggs and polycyclic aromatic hydrocarbons in nestlings were at background concentrations at all sites. Trace element concentrations in barn swallow eggs and nestling livers were at background levels and did not differ among the three sites. A biomarker of DNA damage did not differ among sites.

  16. Contaminant exposure of barn swallows nesting on Bayou d'Inde, Calcasieu Estuary, Louisiana, USA

    USGS Publications Warehouse

    Custer, T.W.; Custer, Christine M.; Goatcher, B.L.; Melancon, M.J.; Matson, C.W.; Bickham, J.W.

    2006-01-01

    Current and historical point source discharges, storm water runoff, and accidental spills have contaminated the water, sediment, and biota within the Calcasieu Estuary in southwestern Louisiana. In 2003, barn swallow (Hirundo rustica) eggs and nestlings were collected beneath two bridges that cross Bayou d'Inde, the most contaminated waterway within the Calcasieu Estuary. Samples were also collected from a bridge over Bayou Teche, a reference site in south central Louisiana. Polychlorinated biphenyl (PCB) concentrations in barn swallow eggs and nestlings were significantly higher at the downstream site on Bayou d'Inde (2.8 mu g/g PCBs in eggs and 1.5 mu g/g PCBs in nestlings) than at the other two sites (< 0.2 mu g/g PCBs in eggs and nestlings at both sites). Ethoxyresorufin-O-dealkylase activity in nestling livers was significantly higher at the downstream site on Bayou d'Inde (50 pmol/min/mg) compared to the other two locations (24 pmol/min/mg, each), probably because of exposure to PCBs. Polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran concentrations in eggs and polycyclic aromatic hydrocarbons in nestlings were at background concentrations at all sites. Trace element concentrations in barn swallow eggs and nestling livers were at background levels and did not differ among the three sites. A biomarker of DNA damage did not differ among sites.

  17. Contaminant exposure of barn swallows nesting on Bayou d'Inde, Calcasieu Estuary, Louisiana, USA.

    PubMed

    Custer, Thomas W; Custer, Christine M; Goatcher, Buddy L; Melancon, Mark J; Matson, Cole W; Bickham, John W

    2006-10-01

    Current and historical point source discharges, storm water runoff, and accidental spills have contaminated the water, sediment, and biota within the Calcasieu Estuary in southwestern Louisiana. In 2003, barn swallow (Hirundo rustica) eggs and nestlings were collected beneath two bridges that cross Bayou d'Inde, the most contaminated waterway within the Calcasieu Estuary. Samples were also collected from a bridge over Bayou Teche, a reference site in south central Louisiana. Polychlorinated biphenyl (PCB) concentrations in barn swallow eggs and nestlings were significantly higher at the downstream site on Bayou d'Inde (2.8 micro g/g PCBs in eggs and 1.5 micro g/g PCBs in nestlings) than at the other two sites (< 0.2 micro g/g PCBs in eggs and nestlings at both sites). Ethoxyresorufin-O-dealkylase activity in nestling livers was significantly higher at the downstream site on Bayou d'Inde (50 pmol/min/mg) compared to the other two locations (24 pmol/min/mg, each), probably because of exposure to PCBs. Polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran concentrations in eggs and polycyclic aromatic hydrocarbons in nestlings were at background concentrations at all sites. Trace element concentrations in barn swallow eggs and nestling livers were at background levels and did not differ among the three sites. A biomarker of DNA damage did not differ among sites. PMID:16779575

  18. 3-D seismic results in the discovery of significant reserves bypassed for 55 years in the Chocolate Bayou Field

    SciTech Connect

    Pennington, A.; Plant, C.; Davis, C.

    1994-12-31

    The Chocolate Bayou Field is located 25 miles south of Houston, in Southeast Brazoria County, Texas. Discovered in 1938, the field has produced over 2 trillion cubic feet of natural gas and 65 million barrels of oil from approximately 30 sands and 300 wellbores. The majority of the production is from the sands of the upper and middle Frio (Oligocene) section. Accumulation is found on structural highs on both the downthrown and upthrown side of a major basinward growth fault. A 3-D seismic survey was conducted over the field in 1988 in an effort to locate bypassed reserves. Interpretation of the data revealed and unexpected paleo structure associated with a buried and previously undetected counter-regional fault located almost 3 miles south of the structural crest at the Upper Frio level. Detailed structural and isochron mapping with adequate depth conversions indicated that the structure was prospective for trapping of the Lower Frio Sand which were well developed but wet under the Upper Frio structural crest. Although the feature was located on the absolute edge of the survey, the data were adequate to locate two wells which have now been completed in the Lower Frio (RA{sub 4}) section. The sands ranged in thickness from 65 to 115 feet of net pay with porosities from 27 to 30% with sustained production rates in excess of 10,000 million cubic feet of gas and 140 barrels of oil per day per completion.

  19. Microseismic monitoring of Chocolate Bayou, Texas. The Pleasant Bayou No. 2 geopressured/geothermal energy test-well program. 1982 annual progress report

    SciTech Connect

    Mauk, F.J.; Davis, R.A.

    1982-01-01

    To investigate the seismic risks associated with geopressured fluid production from the Pleasant Bayou No. 2 design well a seismic monitoring program was conducted in the vicinity of the Brazoria County design wells since 1979. The monitoring program was designed first to establish the nature of the local ambient seismicity prior to production, and second to provide continued surveillance of the area during the well tests to determine if production altered ambient seismic conditions significantly. The operation, data analyses, results and conclusions of the Brazoria seismic network during the operational period from 1 January through 31 December 1982 are described.

  20. Conversion of the Bayou Choctaw geological site characterization report to a three-dimensional model.

    SciTech Connect

    Stein, Joshua S.; Rautman, Christopher Arthur

    2004-02-01

    The geologic model implicit in the original site characterization report for the Bayou Choctaw Strategic Petroleum Reserve Site near Baton Rouge, Louisiana, has been converted to a numerical, computer-based three-dimensional model. The original site characterization model was successfully converted with minimal modifications and use of new information. The geometries of the salt diapir, selected adjacent sedimentary horizons, and a number of faults have been modeled. Models of a partial set of the several storage caverns that have been solution-mined within the salt mass are also included. Collectively, the converted model appears to be a relatively realistic representation of the geology of the Bayou Choctaw site as known from existing data. A small number of geometric inconsistencies and other problems inherent in 2-D vs. 3-D modeling have been noted. Most of the major inconsistencies involve faults inferred from drill hole data only. Modem computer software allows visualization of the resulting site model and its component submodels with a degree of detail and flexibility that was not possible with conventional, two-dimensional and paper-based geologic maps and cross sections. The enhanced visualizations may be of particular value in conveying geologic concepts involved in the Bayou Choctaw Strategic Petroleum Reserve site to a lay audience. A Microsoft WindowsTM PC-based viewer and user-manipulable model files illustrating selected features of the converted model are included in this report.

  1. 76 FR 45421 - Safety Zone; Houma Navigation Canal, From Waterway Mile Markers 19.0 to 20.0, Southwest of Bayou...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-29

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AAOO Safety Zone; Houma Navigation Canal, From Waterway Mile... the Houma Navigation Canal, from Waterway Mile Markers 19.0 to 20.0, Southwest of Bayou Plat, bank to.../Barriers in the Houma Navigation Canal, from Waterway Mile Markers 19.0 to 20.0, southwest of Bayou...

  2. Nutrient loading and selected water-quality and biological characteristics of Dickinson Bayou near Houston, Texas, 1995-97

    USGS Publications Warehouse

    East, Jeffery W.; Paul, Edna M.; Porter, Stephen D.

    1998-01-01

    Algal samples were collected at seven stations and were analyzed for periphyton identification and enumeration, and chlorophyll a and chlorophyll b concentrations. The large relative abundance of soil algae at stations in the middle of the watershed likely indicates the cumulative effects on water quality of agricultural nonpoint sources. Farther downstream near the State Highway 3 bridge, and downstream of three major tributary inflows, the increase in abundance of soil algae to a larger-than-expected level might reflect water-quality influences from predominantly urban nonpoint sources in the drainage basins of the three major tributary inflows. Nutrient concentrations do not appear to limit algal production in the upper (non-tidal) reach of Dickinson Bayou; but nutrient concentrations could have been limiting benthicalgal production in the lower (tidal) reach of the bayou during the time of the synoptic survey. If nitrogen is the limiting resource for algal productivity in the tidal reach of Dickinson Bayou, eutrophi

  3. An integrated approach to reservoir engineering at Pleasant Bayou Geopressured-Geothermal reservoir

    SciTech Connect

    Shook, G.M.

    1992-12-01

    A numerical model has been developed for the Pleasant Bayou Geothermal-Geopressured reservoir. This reservoir description is the result of integration of a variety of data, including geological and geophysical interpretations, pressure transient test analyses, and well operations. Transient test analyses suggested several enhancements to the geologic description provided by University of Texas Bureau of Economic Geology (BEG), including the presence of an internal fault not previously identified. The transient tests also suggested water influx from an adjacent aquifer during the long-term testing of Pleasant Bayou; comparisons between transient test analyses and the reservoir description from BEG suggests that this fault exhibits pressure-dependent behavior. Below some pressure difference across the fault, it remains a no-flow barrier; above this threshold pressure drop the barrier fails, and fluid moves across the fault. A history match exercise is presented, using the hypothesized {open_quotes}leaky fault.{close_quotes} Successful match of 4 years of production rates and estimates of average reservoir pressure supports the reservoir description developed herein. Sensitivity studies indicate that the degree of communication between the perforated interval and the upper and lower sands in the reservoir (termed {open_quotes}distal volume{close_quotes} by BEG) impact simulation results very little, whereas results are quite sensitive to storage and transport properties of this distal volume. The prediction phase of the study indicates that Pleasant Bayou is capable of producing 20,000 STB/d through 1997, with the final bottomhole pressure approximately 1600 psi above abandonment pressure.

  4. Geomechanical testing of Bayou Choctaw 102B core for SPR analysis

    SciTech Connect

    Ingraham, Mathew Duffy; Broome, Scott Thomas; Bauer, Stephen J.; Barrow, Perry Carl; Flint, Gregory Mark

    2014-02-01

    A laboratory testing program was developed to examine the short-term mechanical and time-dependent (creep) behavior of salt from the Bayou Choctaw Salt Dome. This report documents the test methodologies, and constitutive properties inferred from tests performed. These are used to extend our understanding of the mechanical behavior of the Bayou Choctaw domal salt and provide a data set for numerical analyses. The resulting information will be used to support numerical analyses of the current state of the Bayou Choctaw Dome as it relates to its crude oil storage function as part of the US Strategic Petroleum Reserve. Core obtained from Drill Hole BC-102B was tested under creep and quasi-static constant mean stress axisymmetric compression, and constant mean stress axisymmetric extension conditions. Creep tests were performed at 100 degrees Fahrenheit, and the axisymmetric tests were performed at ambient temperatures (72-78 degrees Fahrenheit). The testing performed indicates that the dilation criterion is pressure and stress state dependent. It was found that as the mean stress increases, the shear stress required to cause dilation increases. The results for this salt are reasonably consistent with those observed for other domal salts. Also it was observed that tests performed under extensile conditions required consistently lower shear stress to cause dilation for the same mean stress, which is consistent with other domal salts. Young's moduli ranged from 3.95 x 106 to 8.51 x 106 psi with an average of 6.44 x 106 psi, with Poisson's ratios ranging from 0.10 to 0.43 with an average of 0.30. Creep testing indicates that the BC salt is intermediate in creep resistance when compared with other bedded and domal salt steady-state behavior.

  5. Tremors in the Bayou: The Events on the Napoleonville Salt Dome, Louisiana

    NASA Astrophysics Data System (ADS)

    Ellsworth, W. L.; Horton, S.; Benz, H.; Hickman, S.; Leeds, A.; Leith, W. S.; Meremonte, M.; Rubinstein, J. L.; Withers, M. M.; Herrmann, R. B.

    2012-12-01

    Beginning in early June, 2012, an extended series of earth tremors were reported by residents of Bayou Corne in Assumption Parish, Louisiana, and at well control facilities on the nearby Napoleonville salt dome. The salt dome contains numerous caverns resulting from solution mining; some are used to store LPG and natural gas while others produce saltwater brine. Residents also reported natural gas bubbling at nearby locations in Bayou Corne and Grand Bayou. Some of the tremors were large enough to produce "cracks in sheet rock and foundations" (The Advocate, Baton Rouge, July 5, 2012). It was thus quite surprising to find that no earthquakes were detected in this region by either the USGS NEIC or the USArray Array Network Facility despite the presence of Transportable Array station 544A only 10 km from Bayou Corne. Careful inspection of the seismograms at 544A did reveal multiple events characterized by virtually no body wave energy and strong surface waves at the times of reported tremors. In response to a request for assistance from the State of Louisiana six temporary seismic stations with Trillium broad band sensors were deployed in the immediate epicentral region by the USGS and University of Memphis starting on July 12. Seismograms recorded by the temporary stations revealed a variable rate of tremor activity, with several hundred events registered on active days. Even at very close distance (S-P < 0.5 s) the body waves are weak and surface waves prominent, indicating a very shallow source depth. Precise location of the events is complicated by the presence of the high-seismic velocity and steep-sided Napoleonville salt dome that reaches to within 220 m of the surface and is overlain and surrounded by very low velocity sediments. Following several repositionings of the seismic network we have determined that the source region lies on the western edge of the salt dome top at very shallow depth and in the vicinity of an abandoned brine supply cavern. Tremor

  6. 77 FR 39422 - Eighth Coast Guard District Annual Safety Zones; Niceville July 4th Fireworks Show; Boggy Bayou...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-03

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Eighth Coast Guard District Annual Safety Zones; Niceville July 4th Fireworks Show; Boggy Bayou; Niceville, FL AGENCY: Coast Guard, DHS. ACTION: Notice of enforcement of regulation. SUMMARY: The Coast Guard will enforce a Safety Zone for the Niceville July...

  7. Threat of a sinkhole: A reevaluation of Cavern 4, Bayou Choctaw salt dome, Louisiana

    SciTech Connect

    Neal, J.T.; Todd, J.L.; Linn, J.K.; Magorian, T.R.

    1993-09-01

    Cavern Lake at Bayou Choctaw salt dome resulted from the failure of Cavern 7 in 1954. Uncontrolled solutioning of this cavern through the thin caprock had set the stage for overburden to collapse into the cavern below. A similar situation developed with nearby Cavern 4, but with less dissolutioning of the caprock. Because pressure loss was already a problem and because another 800 ft diameter lake would have endangered surface operations, solutioning of Cavern 4 was stopped and the cavern abandoned in 1957 in order to protect the already-small site. In 1978 the Strategic Petroleum Reserve (SPR) acquired a number of caverns at Bayou Choctaw, including Cavern 4, and the possible repeat of the Cavern 7 failure and formation of another lake thus became an issue. The cavern dimensions were re-sonared in 1980 for comparison with 1963 and 1977 surveys. Annual surface leveling between 1982--1992 showed less subsidence occurring than the site average, and a cavern monitoring system, installed in 1984, has revealed no anomalous motion. Repeat sonar surveys in 1992 showed very little, if any, change occurred since 1980 although a small amount of uncertainty exists as a result of changing sonar techniques. We conclude that significant additional solutioning or erosion of the caprock has not occurred and that there is no increased threat to SPR operations.

  8. Expansion analyses of strategic petroleum reserve in Bayou Choctaw : revised locations.

    SciTech Connect

    Ehgartner, Brian L.; Park, Byoung Yoon

    2010-11-01

    This report summarizes a series of three-dimensional simulations for the Bayou Choctaw Strategic Petroleum Reserve. The U.S. Department of Energy plans to leach two new caverns and convert one of the existing caverns within the Bayou Choctaw salt dome to expand its petroleum reserve storage capacity. An existing finite element mesh from previous analyses is modified by changing the locations of two caverns. The structural integrity of the three expansion caverns and the interaction between all the caverns in the dome are investigated. The impacts of the expansion on underground creep closure, surface subsidence, infrastructure, and well integrity are quantified. Two scenarios were used for the duration and timing of workover conditions where wellhead pressures are temporarily reduced to atmospheric pressure. The three expansion caverns are predicted to be structurally stable against tensile failure for both scenarios. Dilatant failure is not expected within the vicinity of the expansion caverns. Damage to surface structures is not predicted and there is not a marked increase in surface strains due to the presence of the three expansion caverns. The wells into the caverns should not undergo yield. The results show that from a structural viewpoint, the locations of the two newly proposed expansion caverns are acceptable, and all three expansion caverns can be safely constructed and operated.

  9. Turtle Bayou - 1936 to 1983: case history of a major gas field in south Louisiana

    SciTech Connect

    Cronquist, C.

    1983-01-01

    Turtle Bayou field, located in the middle Miocene trend in S. Louisiana, is nearing the end of a productive life which spans over 30 yr. Discovered by Shell Oil Co. in 1949 after unsuccessful attempts by 2 other majors, the field is a typical, low relief, moderately faulted Gulf Coast structure, probably associated with deep salt movement. The productive interval includes 22 separate gas-bearing sands in a regressive sequence of sands and shales from approx. 6500 to 12,000 ft. Now estimated to have contained ca 1.2 trillion scf of gas in place, cumulative production through 1982 was 702 billion scf. Cumulative condensate-gas ratio has been 20 bbl/million. Recovery mechanisms in individual reservoirs include strong bottom water drive, partial edgewater drive, and pressure depletion. Recovery efficiencies in major reservoirs range from 40 to 75% of original gas in place.

  10. Construction of hexahedral elements mesh capturing realistic geometries of Bayou Choctaw SPR site

    SciTech Connect

    Park, Byoung Yoon; Roberts, Barry L.

    2015-09-01

    The three-dimensional finite element mesh capturing realistic geometries of Bayou Choctaw site has been constructed using the sonar and seismic survey data obtained from the field. The mesh is consisting of hexahedral elements because the salt constitutive model is coded using hexahedral elements. Various ideas and techniques to construct finite element mesh capturing artificially and naturally formed geometries are provided. The techniques to reduce the number of elements as much as possible to save on computer run time with maintaining the computational accuracy is also introduced. The steps and methodologies could be applied to construct the meshes of Big Hill, Bryan Mound, and West Hackberry strategic petroleum reserve sites. The methodology could be applied to the complicated shape masses for not only various civil and geological structures but also biological applications such as artificial limbs.

  11. Effects of polychlorinated dibenzo-p-dioxins and dibenzofurans on nesting wood ducks (Aix sponsa) at Bayou Meto, Arkansas.

    PubMed

    White, D H; Hoffman, D J

    1995-05-01

    Wood ducks (Aix sponsa) nesting along Bayou Meto downstream from a hazardous waste site in central Arkansas were contaminated with polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs). Residues in eggs, based on 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TCDD-EQ), ranged up to 611 parts per trillion (ppt), and egg arithmetic means were 90-fold higher at the site nearest the point source compared with a reference site. We monitored productivity of wood ducks in artificial nest boxes at three sites on the bayou and at a reference site on a separate drainage during 1988-1990. Productivity was suppressed (p < 0.05) at the bayou sites compared with the reference site, and egg TCDD-EQs were inversely correlated (p < 0.001) with productivity in corresponding nests. The threshold range of toxicity, where reduced productivity was evident in wood ducks (based on TCDD-EQs), was > 20 to 50 ppt. Oxidative stress and teratogenic effects occurred in ducklings at the more contaminated nesting sites nearest the point source. These findings suggest that wood ducks may be more sensitive to PCDD and PCDF contamination than some other aquatic birds and could serve as an indicator species for monitoring biological impacts from these contaminants. PMID:7556022

  12. Superfund Record of Decision (EPA Region 6): Bayou Sorrel, Louisiana, November 1986. First remedial action. Final report

    SciTech Connect

    Not Available

    1986-11-14

    The Bayou Sorrel site is located in Iberville Parish, Louisiana approximately 20 miles southwest of Baton Rouge, LA. Fifty acres of the 265-acre site have been used for waste disposal. The waste-disposal areas consist of four landfills: a spent-lime cell, a crushed-drum cell, four covered liquid-waste ponds, and a land farm. The remaining acres are covered by dense brush and trees. The entire site has a marshy, bayou-type environment and is prone to flooding and poor drainage. Early in 1977, the Environmental Purification Advancement Corporation (EPAC) began operating the Bayou Sorrel site. A sister firm, Clean Land Air Water, Inc. (CLAW) operated an injection well approximately six miles south of the site. EPAC operations included landfarming, open liquid impoundments, drum burial, and landfilling of chemically fixated wastes. The fixation process is unknown but may have included lime, cement, and native soils. EPAC and CLAW were two separate operations, however, it was suggested that wastes from the injection well were diverted to EPAC when process problems at the well caused a bottleneck. In the summer of 1978, a truck driver died at the site.

  13. Bayou Saigon.

    ERIC Educational Resources Information Center

    Epstein, Nadine

    1994-01-01

    Vietnamese immigrants constitute 28% of the population of the small town of Amelia, Louisiana. Vietnamese are characterized by their neighbors as family oriented, hardworking, and self-disciplined. The principal of the local elementary school describes the Vietnamese students as bright and motivated. The local Vietnamese priest expresses concern…

  14. Soil Biogeochemical Properties and Erosion Source Prediction Model Summary for the Buffalo Bayou Watershed, Houston, Texas

    NASA Astrophysics Data System (ADS)

    Ahmed, I.

    2015-12-01

    We draw conclusions on the research output and findings from a 4-year multidisciplinary USDA-CBG collaborative program in sustainable integrated monitoring of soil organic carbon (SOC) loss prediction via erosion. The underlying method uses the state-of-the-art stable isotope science of sediment tracing under uncertain hydrologic influences. The research finds are rooted in the (i) application of Bayesian Markov Chain Monte Carlo statistical models to assess the relationship between rainfall-runoff and soil erosion in space and time, (ii) capture of the episodic nature of rainfall events and its role in the spatial distribution of SOC loss from water erosion, (iii) stable isotope composition guided fingerprinting (source and quantity) of eroded soil, and (iv) the creation of an integrated watershed scale statistical soil loss monitoring model driven by spatial and temporal correlation of flow and stable isotope composition. The research theme was successfully applied on the urbanized Buffalo Bayou Watershed in Houston, Texas. The application brought to light novel future research conceptual outlines which will also be discussed in this deliverable to the AGU meeting. These include but not limited to: regional rainfall cluster research, physics of muddy river-bank soil and suspended sediment interaction, and friction & mobility that together make up the plasticity of soil aggregates that control erosion processes and landscape changes in a riparian corridor. References: Ahmed, I., Karim, A., Boutton, T.W., and Strom, K.B. (2013a). "Monitoring Soil Organic Carbon Loss from Erosion Using Stable Isotopes." Proc., Soil Carbon Sequestration, International Conference, May 26-29, Reykjavik, Iceland. Ahmed, I, Bouttom, T.W., Strom, K. B., Karim, A., and Irvin-Smith, N. (2013b). "Soil carbon distribution and loss monitoring in the urbanized Buffalo Bayou watershed, Houston, Texas." Proc., 4th Annual All Investigators Meeting of the North American Carbon Program, February 4

  15. Digital model of the Bayou Bartholomew alluvial aquifer stream system, Arkansas

    USGS Publications Warehouse

    Reed, J.E.; Broom, Matthew E.

    1979-01-01

    A digital model of the Bayou Bartholomew aquifer-stream system in Arkansas was calibrated for the purpose of predicting hydrologic responses to stresses of water development. The simulated-time span for model calibration was from 1953 to 1970, during which time the system was stressed largely by ground- and surface-water diversions for rice irrigation. The model was calibrated by comparing groundwater-level and streamflow data with model-derived groundwater levels and streamflow. In the calibrated model, the ratio of model-derived to observed streamflows for 17 subbasins averaged 1.1; the ratios among the subbasins ranged from 0.8 to 1.6. The average deviation of the differences between model-derived and observed groundwater levels at 47 nodes was 0.2; the average among the nodes ranged from -2.3 to 10.4. The average standard deviation of the differences between the model-derived and observed groundwater levels was 3.5; the average among the nodes ranged from 0.4 to 10.5. The model will provide projections of changes in the potentiometric surface resulting from (1) changes in the rate or distribution of groundwater pumpage or (2) changes in the stage of streams and reservoirs. The model will provide only approximate projections of the streamflow. (USGS)

  16. Turtle Bayou 1936-1983: case history of a major gas field in south Louisiana

    SciTech Connect

    Cronquist, C.

    1984-11-01

    Turtle Bayou field, located in the middle Miocene trend in south Louisiana, is nearing the end of a productive life spanning more than 30 years. Discovered by Shell Oil Co. in 1949 after unsuccessful attempts by two other companies, the field is a typical, low-relief, moderately faulted U.S. Gulf Coast structure, probably associated with deep salt movement. The productive interval includes 22 separate gas-bearing sands in a regressive sequence of sands and shales from approximately 6,500 to 12,000 ft (1980 to 3660 m). Now estimated to have contained about 1.2 trillion scf (34 X 10/sup 9/ std m/sup 3/) of gas in place, cumulative production through 1982 was 702 billion scf (20 X 10/sup 9/ std m/sup 3/). Cumulative condensate/gas ration (CGR) has been 20 bbl/MMcf (110 X 10/sup -6/ m/sup 3//m/sup 3/. Recovery mechanisms in individual reservoirs include strong bottomwater drive, partial edgewater drive, and pressure depletion. Recovery efficiencies in major reservoirs range form 40 to 83% of original gas in place (OGIP). On decline since 1973, it is anticipated the field will be essentially depleted in the next 5 years.

  17. Turtle Bayou--1936 to 1983--case history of a major gas field in South Louisiana

    SciTech Connect

    Cronquist, C.

    1983-10-01

    Turtle Bayou Field, located in the middle Miocene trend in South Louisiana, is nearing the end of a productive life which spans over 30 years. Discovered by Shell Oil Company in 1949 after unsuccessful attempts by two other majors, the field is a typical, low relief, moderately faulted Gulf Coast structure, probably associated with deep salt movement. The productive interval includes 22 separate gas-bearing sands in a regressive sequence of sands and shales from approximately 6500 to 12,000 feet. Now estimated to have contained about 1.2 trillion standard cubic feet of gas in place, cumulative production through 1982 was 702 billion standard cubic feet. Cumulative condensate-gas ratio has been 20 barrels per million. Recovery mechanisms in individual reservoirs include strong bottom water drive, partial edgewater drive, and pressure depletion. Recovery efficiencies in major reservoirs range from 40 to 75 percent of original gas in place. On decline since 1973, it is anticipated the field will be essentially depleted in the next five years.

  18. Bioaccumulation of human pharmaceuticals in fish across habitats of a tidally influenced urban bayou.

    PubMed

    Du, Bowen; Haddad, Samuel P; Luek, Andreas; Scott, W Casan; Saari, Gavin N; Burket, S Rebekah; Breed, Christopher S; Kelly, Martin; Broach, Linda; Rasmussen, Joseph B; Chambliss, C Kevin; Brooks, Bryan W

    2016-04-01

    Though pharmaceuticals and other contaminants of emerging concern are increasingly observed in inland water bodies, the occurrence and bioaccumulation of pharmaceuticals in estuaries and coastal ecosystems are poorly understood. In the present study, bioaccumulation of select pharmaceuticals and other contaminants of emerging concern was examined in fish from Buffalo Bayou, a tidally influenced urban ecosystem that receives effluent from a major (∼200 million gallons per day) municipal wastewater treatment plant in Houston, Texas, USA. Using isotope dilution liquid chromatography-tandem mass spectrometry, various target analytes were observed in effluent, surface water, and multiple fish species. The trophic position of each species was determined using stable isotope analysis. Fish tissue levels of diphenhydramine, which represented the only pharmaceutical detected in all fish species, did not significantly differ between freshwater and marine fish predominantly inhabiting benthic habitats; however, saltwater fish with pelagic habitat preferences significantly accumulated diphenhydramine to the highest levels observed in the present study. Consistent with previous observations from an effluent-dependent freshwater river, diphenhydramine did not display trophic magnification, which suggests site-specific, pH-influenced inhalational uptake to a greater extent than dietary exposure in this tidally influenced urban ecosystem. The findings highlight the importance of understanding differential bioaccumulation and risks of ionizable contaminants of emerging concern in habitats of urbanizing coastal systems. PMID:26587912

  19. Pleasant Bayou geopressured/geothermal testing project, Brazoria County, Texas. Final report

    SciTech Connect

    Ortego, P.K.

    1985-07-01

    Phase II-B production testing of the Pleasant Bayou No. 2 well began September 22, 1982. The test plan was designed to evaluate the capabilities of the geopressured-geothermal reservoir during an extended flow period. Tests were conducted to determine reservoir areal extent; aquifer fluid properties; fluid property change with production; information on reservoir production drive mechanism; long-term scale and corrosion control methods; and disposal well operations. Operatinal aspects of geopressured-geothermal production were also evaluated. The test was discontinued prematurely in May 1983 because of a production tubing failure. Most of the production tubing was recovered from the well and cause of the failure was determined. Plans for recompletion of the well were prepared. However, the well was not recompleted because of funding constraints and/or program rescheduling. In March 1984, the Department of Energy, Nevada Operations Office (DOE/NV) directed that the site be placed in a standby-secured condition. In August 1984, the site was secured. Routine site maintenance and security was provided during the secured period.

  20. Mobilization of trace metals and inorganic compounds during resuspension of anoxic sediments from Trepangier Bayou, Louisiana.

    PubMed

    Shipley, Heather J; Gao, Yan; Kan, Amy T; Tomson, Mason B

    2011-01-01

    The release of trace metals (Mn, Ni, Co, Cu, Zn, Pb, and Cd) and inorganic compounds (As) from initially anoxic Trepangier Bayou sediments, Louisiana and the sources of the released metals were investigated. After 1 to 2 d aeration, significant amounts of trace metals (Mn, Zn, Cd, Ni, and Co) were released to the aqueous phase with increased acidity, primarily due to the oxidation of acid-volatile sulfide and ferrous iron and iron sulfide minerals. The addition of a bacterial inhibitor, NaN,, to the Trepangier sediment during resuspension inhibited metal release, suggesting that microbial catalysis can regulate metal mobilization during sediment resuspension. In a well buffered system, oxidation of iron sulfides alone did not appear to induce trace metal release. Moreover, when Trepangier sediment was resuspended in anoxic conditions at neutral pH, <1% of the trace metal content was released, whereas a significant release of metal was observed under acidic anoxic conditions. Although oxidation of iron sulfide minerals is an essential prerequisite for the release of Zn, Co, Cd, and Ni, carbonates and oxides also play a role. The trace metals and inorganic compounds investigated could be classified into three groups according to their release characteristics: (i) Mn, Zn, Cd, Ni, and Co; (ii) Fe, Pb, and As; and (iii) Cu. The groupings appeared to depend on the sources of compounds and their relative affinity, after oxidation, to iron oxyhydroxides or organic matter. PMID:21520756

  1. Dispersal and persistence of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in a contaminated aquatic ecosystem, Bayou Meto, Arkansas

    SciTech Connect

    Heckathorn, W.D.; Johnson, J.E.; Thompson, A.L.

    1995-12-31

    In 1991, sediment and fish samples were collected from Bayou Meto above and below the Vertac Chemical Corporation in Jacksonville, Arkansas. The purpose of this study was to: (1) assess present concentrations of dioxins in sediments and fishes of Bayou Meto; (2) compare the present concentrations and distribution of dioxins in Bayou Meto to concentrations found in previous studies; (3) examine the dispersion of TCOD from its point source; and (4) compare experimental theories on biomagnification with the field findings. The sediment and fish were collected from twelve sites on Bayou Meto, and two sites on Wattensaw Bayou. Concentrations of 2,3,7,8-TCDD were elevated in sediment and fish samples at levels sufficient to pose a threat to fish and wildlife resources. TCDD concentrations remained above background levels downstream, grading in a classic pattern of dispersion from a single point source. For all samples, the higher chlorinated congeners were orders of magnitude higher than the TCDD concentrations. The highest TCDD concentration in sediments and fishes were found immediately downstream from Rocky Branch at river km 250. TCDD concentrations in fish and sediment samples were elevated above background level to the furthest downstream sampling station at river km 36. However, TCDD levels in Bayou Meto sediments have declined over time by dispersion and sedimentation. Juvenile bluegills consistently contained 2.4 times more TCDD than did the smallmouth buffalo, and 6.2 times more TCDD than the largemouth bass. Bluegill samples at the sampling station below Rocky Branch were the only fish where concentrations exceeded those of the sediments. Fishes do not appear to biomagnify TCDD. TCDD body burdens of fishes appear to be determined primarily by lipid concentrations and secondarily by association to the sediments and diet.

  2. A validation test for Adagio through replication of Big Hill and Bayou Choctaw JAS3D models.

    SciTech Connect

    Park, Byoung Yoon

    2013-06-01

    JAS3D, a three dimensional iterative solid mechanics code, has been used for structural analyses for the Strategic Petroleum Reserve system since the 1990s. JAS3D is no longer supported by Sandia National Laboratories, and has been replaced by Adagio. To validate the transition from JAS3D to Adagio, the existing JAS3D input decks and user subroutines for Bayou Choctaw and Big Hill models were converted for use with Adagio. The calculation results from the Adagio runs are compared to the JAS3D. Since the Adagio results are very similar to the JAS3D results, Adagio is judged to be performing satisfactorily.

  3. Strategic Petroleum Reserve (SPR) additional geologic site characterization studies, Bayou Choctaw salt dome, Louisiana

    SciTech Connect

    Neal, J.T.; Magorian, T.R.; Byrne, K.O.; Denzler, S.

    1993-09-01

    This report revises and updates the geologic site characterization report that was published in 1980. Revised structure maps and sections show interpretative differences in the dome shape and caprock structural contours, especially a major east-west trending shear zone, not mapped in the 1980 report. Excessive gas influx in Caverns 18 and 20 may be associated with this shear zone. Subsidence values at Bayou Choctaw are among the lowest in the SPR system, averaging only about 10 mm/yr but measurement and interpretation issues persist, as observed values often approximate measurement accuracy. Periodic, temporary flooding is a continuing concern because of the low site elevation (less than 10 ft), and this may intensify as future subsidence lowers the surface even further. Cavern 4 was re-sonared in 1992 and the profiles suggest that significant change has not occurred since 1980, thereby reducing the uncertainty of possible overburden collapse -- as occurred at Cavern 7 in 1954. Other potential integrity issues persist, such as the proximity of Cavern 20 to the dome edge, and the narrow web separating Caverns 15 and 17. Injection wells have been used for the disposal of brine but have been only marginally effective thus far; recompletions into more permeable lower Pleistocene gravels may be a practical way of increasing injection capacity and brinefield efficiency. Cavern storage space is limited on this already crowded dome, but 15 MMBBL could be gained by enlarging Cavern 19 and by constructing a new cavern beneath and slightly north of abandoned Cavern 13. Environmental issues center on the low site elevation: the backswamp environment combined with the potential for periodic flooding create conditions that will require continuing surveillance.

  4. Effects of polychlorinated dibenzo-p-dioxins and dibenzofurans on nesting wood ducks (Aix Sponsa) at Bayou Meto, Arkansas

    USGS Publications Warehouse

    White, D.H.; Hoffman, D.J.

    1995-01-01

    Wood ducks (Aix sponsa) nesting along Bayou Meto downstream from a hazardous waste site in central Arkansas were contaminated with polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs). Residues in eggs, based on 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TCDD-EQ), ranged up to 611 parts per trillion (ppt), and egg arithmetic means were 90-fold higher at the site nearest the point source compared with a reference site. We monitored productivity of wood ducks in artificial nest boxes at three sites on the bayou and at a reference site on a separate drainage during 1988-1990. Productivity was suppressed (p 20 to 50 ppt. Oxidative stress and teratogenic effects occurred in ducklings at the more contaminated nesting sites nearest the point source. These findings suggest that wood ducks may be more sensitive to PCDD and PCDF contamination than some other aquatic birds and could serve as an indicator species for monitoring biological impacts from these contaminants.

  5. Characterizing Micro- and Macro-Scale Seismicity from Bayou Corne, Louisiana

    NASA Astrophysics Data System (ADS)

    Baig, A. M.; Urbancic, T.; Karimi, S.

    2013-12-01

    The initiation of felt seismicity in Bayou Corne, Louisiana, coupled with other phenomena detected by residents on the nearby housing development, prompted a call to install a broadband seismic network to monitor subsurface deformation. The initial deployment was in place to characterize the deformation contemporaneous with the formation of a sinkhole located in close proximity to a salt dome. Seismic events generated during this period followed a swarm-like behaviour with moment magnitudes culminating around Mw2.5. However, the seismic data recorded during this sequence suffer from poor signal to noise, onsets that are very difficult to pick, and the presence of a significant amount of energy arriving later in the waveforms. Efforts to understand the complexity in these waveforms are ongoing, and involve invoking the complexities inherent in recording in a highly attenuating swamp overlying a complex three-dimensional structure with the strong material property contrast of the salt dome. In order to understand the event character, as well as to locally lower the completeness threshold of the sequence, a downhole array of 15 Hz sensors was deployed in a newly drilled well around the salt dome. Although the deployment lasted a little over a month in duration, over 1000 events were detected down to moment magnitude -Mw3. Waveform quality tended to be excellent, with very distinct P and S wave arrivals observable across the array for most events. The highest magnitude events were seen as well on the surface network and allowed for the opportunity to observe the complexities introduced by the site effects, while overcoming the saturation effects on the higher-frequency downhole geophones. This hybrid downhole and surface array illustrates how a full picture of subsurface deformation is only made possible by combining the high-frequency downhole instrumentation to see the microseismicity complemented with a broadband array to accurately characterize the source

  6. A Possible Source Model for VLP Signals in Bayou Corne, LA

    NASA Astrophysics Data System (ADS)

    Leidig, M.; Stroujkova, A. F.

    2013-12-01

    Very Long Period (VLP) signals have been recorded in the Bayou Corne area since the formation of a sinkhole resulting from failed a salt cavern. Sediment and/or water migration is hypothesized to be responsible for these signals. Some key observations regarding these signals include: 1. VLP signals are best recorded at an individual station (LA12) to the southwest of the sinkhole. 2. First VLP event detected 3 days after the sinkhole formed, months after the first seismic events. 3. VLP events increase dramatically in the days preceding sinkhole activity. 4. Natural gas migration potentially occurred for a period of time, possibly months, prior to first VLP event detection. 5. Area near LA12 has undergone at least 2 m of subsidence. 6. VLP activity has continued, even as the cavern has nearly filled with sediment. We have examined various possible source mechanisms in order to understand the origin of the VLP signals. A damped oscillator model in which a surface layer vibrates in response to external disturbances best describes the observed VLP events. The model likely represents the shallow Upper Aquitard (UA) oscillating on top of the Mississippi River Alluvial Aquifer (MRAA). In order for the clay layer of the UA to undulate, the sediments in the MRAA would need to be in a fluidized state, with a viscosity similar to tar or magma. The MRAA is fully saturated with water, and small injections of water into the MRAA could temporarily and locally fluidize the sands and disturb the UA creating a VLP event. In addition, small earthquakes can disturb the system and trigger the oscillations. Lateral movement of fluidized sediments could also disturb the UA and generate a VLP in addition to explaining subsidence near LA12. Lateral extrusion of material into the sinkhole also fits with the lack of detected VLP events prior to the sinkhole formation and the increase in VLP events prior to sinkhole activity. Repeated mappings of the sinkhole geometry indicate the maximum

  7. Subsurface geology and potential for geopressured-geothermal energy in the Turtle Bayou field-Kent Bayou field area, Terrebonne Parish, Louisiana

    SciTech Connect

    Moore, D.R.

    1982-09-01

    A 216 square mile area approximately 65 miles southwest of New Orleans, Louisiana, has been geologically evaluated to determine its potential for geopressured-geothermal energy production. The structural and stratigraphic analyses were made with emphasis upon the Early and Middle Miocene age sediments which lie close to and within the geopressured section. Three geopressured sands, the Robulus (43) sand, Cibicides opima sand, and Cristellaria (I) sand, are evaluated for their potential of producing geothermal energy. Two of these sands, the Robulus (43) sand and the Cibicides opima sand, meet several of the United States Department of Energy's suggested minimum requirements for a prospective geopressured-geothermal energy reservoir.

  8. Summary statistics and graphical comparisons of specific conductance, temperature, and dissolved oxygen data, Buffalo Bayou, Houston, Texas, April 1986-March 1991

    USGS Publications Warehouse

    Brown, D.W.; Paul, E.M.

    1995-01-01

    Buffalo Bayou is the major stream that drains the Houston, Texas, metropolitan area. The U.S. Geological Survey has provided specific conductance, temperature, and dissolved oxygen data to the City of Houston for three sites along a 7.7-mile reach of Buffalo Bayou since 1986. Summary statistics and graphical comparisons of the data show substantial variability in the properties during 1986-91. Specific conductance ranged from about 100 microsiemens per centimeter at 25 degrees Celsius at each of the three sites to 17,100 microsiemens per centimeter at 25 degrees Celsius at the most downstream site, at the headwaters of the Houston Ship Channel. Water temperatures ranged from 5 to 33 degrees Celsius. Temperatures were very similar at the two upstream sites and slightly warmer at the most downstream site. Dissolved oxygen ranged from zero at the most downstream site to 11.7 milligrams per liter at the most upstream site.

  9. Superfund Record of Decision (EPA Region 6): Petro-Chemical (Turtle Bayou), Liberty County, TX. (Second remedial action), September 1991. Final report

    SciTech Connect

    Not Available

    1991-09-06

    The 500-acre Petro-Chemical (Turtle Bayou) site is in Liberty County, Texas. Current land use in the area is divided among cropland, pasture, range, forest, and small rural communities. Since 1971, numerous undocumented disposal activities occurred onsite involving primarily petrochemical wastes. The ROD for OU2 focuses on three areas of contamination at the site affecting soil and ground water contamination, known as the main waste area, the east disposal area, and the Bayou disposal area. The primary contaminants of concern affecting the soil and ground water are VOCs including benzene and xylenes; other organics including PAHs; and metals including lead. The selected remedial action for the site includes treating 302,800 cubic yards of contaminated soil onsite using in-situ vapor extraction to remove VOCs, controlling vertical air infiltration using an engineered soil and synthetic liner cap; consolidating lead-contaminated soil in the Main Waste Area, followed by capping.

  10. Sonar atlas of caverns comprising the U.S. Strategic Petroleum Reserve. Volume 1, Bayou Choctaw site, Louisiana.

    SciTech Connect

    Rautman, Christopher Arthur; Lord, Anna Snider

    2007-10-01

    Downhole sonar surveys from the four active U.S. Strategic Petroleum Reserve sites have been modeled and used to generate a four-volume sonar atlas, showing the three-dimensional geometry of each cavern. This volume 1 focuses on the Bayou Choctaw SPR site, located in southern Louisiana. Volumes 2, 3, and 4, respectively, present images for the Big Hill SPR site, Texas, the Bryan Mound SPR site, Texas, and the West Hackberry SPR site, Louisiana. The atlas uses a consistent presentation format throughout. The basic geometric measurements provided by the down-cavern surveys have also been used to generate a number of geometric attributes, the values of which have been mapped onto the geometric form of each cavern using a color-shading scheme. The intent of the various geometrical attributes is to highlight deviations of the cavern shape from the idealized cylindrical form of a carefully leached underground storage cavern in salt. The atlas format does not allow interpretation of such geometric deviations and anomalies. However, significant geometric anomalies, not directly related to the leaching history of the cavern, may provide insight into the internal structure of the relevant salt dome.

  11. Pipeline corridors through wetlands - impacts on plant communities: Bayou Grand Cane, De Soto Parish, Louisiana. Topical report, August 1991--July 1993

    SciTech Connect

    Shem, L.M.; Zimmerman, R.E.; Hayes, D.; Van Dyke, G.D. |

    1994-12-01

    The goal of the Gas Research Institute Wetland Corridors Program is to document impacts of existing pipeline on the wetlands they traverse. To accomplish this goal, 12 existing wetland crossings were surveyed. These sites varied in elapsed time since pipeline construction, wetland type, pipeline installation techniques, and night of-way (ROW) management practices. This report presents the results of a survey conducted over the period of August 12-13, 1991, at the Bayou Grand Cane crossing in De Soto Parish, Louisiana, where a pipeline constructed three years prior to the survey crosses the bayou through mature bottomland hardwoods. The sit was not seeded or fertilized after construction activities. At the time of sampling, a dense herb stratum (composed of mostly native species) covered the 20-m-wide ROW, except within drainage channels. As a result of the creation of the ROW, new habitat was created, plant diversity increased, and forest habitat became fragmented. The ROW must be maintained at an early stage of succession to allow access to the pipeline however, impacts to the wetland were minimized by decreasing the width of the ROW to 20 m and recreating the drainage channels across the ROW. The canopy trees on the ROW`s edge shaded part of the ROW, which helped to minimize the effects of the ROW.

  12. Streamflow and nutrient data for the Yazoo River below Steele Bayou near Long Lake, Mississippi, 1996-2000

    USGS Publications Warehouse

    Runner, Michael S.; Turnipseed, D. Phil; Coupe, Richard H.

    2002-01-01

    Increased nutrient loading to the Gulf of Mexico from off-continent flux has been identified as contributing to the increase in the areal extent of the low dissolved-oxygen zone that develops annually off the Louisiana and Texas coast. The proximity of the Yazoo River Basin in northwestern Mississippi to the Gulf of Mexico, and the intensive agricultural activities in the basin have led to speculation that the Yazoo River Basin contributes a disproportionate amount of nitrogen and phosphorus to the Mississippi River and ultimately to the Gulf of Mexico. An empirical measurement of the flux of nitrogen and phosphorus from the Yazoo Basin has not been possible due to the hydrology of the lower Yazoo River Basin. Streamflow for the Yazoo River below Steele Bayou is affected by backwater from the Mississippi River. Flow at the gage is non-uniform and varying, with bi-directional and reverse flows possible. Streamflow was computed by using remote sensing and acoustic and conventional discharge and velocity measurement techniques. Streamflow from the Yazoo River for the 1996-2000 period accounted for 2.8 percent of the flow of the Mississippi River for the same period. Water samples from the Yazoo River were collected from February 1996 through December 2000 and were analyzed for total nitrogen, nitrate, total phosphorus, and orthophosphorus as part of the U.S. Geological Survey National Water-Quality Assessment Program. These data were used to compute annual loads of nitrogen and phosphorus discharged from the Yazoo River for the period 1996-2000. Annual loads of nitrogen and phosphorus were calculated by two methods. The first method used multivariate regression and the second method multiplied the mean annual concentration by the total annual flow. Load estimates based on the product of the mean annual concentration and the total annual flow were within the 95 percent confidence interval for the load calculated by multivariate regression in 10 of 20 cases. The Yazoo

  13. Biodiversity Prospecting.

    ERIC Educational Resources Information Center

    Sittenfeld, Ana; Lovejoy, Annie

    1994-01-01

    Examines the use of biodiversity prospecting as a method for tropical countries to value biodiversity and contribute to conservation upkeep costs. Discusses the first agreement between a public interest organization and pharmaceutical company for the extraction of plant and animal materials in Costa Rica. (LZ)

  14. National Water-Quality Assessment Program; summary of pesticide data collected on East Fork Double Bayou, near Anahuac, Texas, March to September 1994

    USGS Publications Warehouse

    U.S. Geological Survey

    1995-01-01

    The Trinity River Basin study-unit assessment began in October 1991, with 2 years dedicated to planning, analyzing existing information, and designing data-collection networks, surveys, and studies. Then, a 3-year intensive data-collection program was initiated. The assessment followed guidelines provided by the National Water-Quality Assessment (NAWQA) Program National Synthesis team and considered suggestions made by the study unit's liaison committee. One of the issues selected for study concerned the quality of runoff in the coastal prairie. The study includes collecting streamflow, water-quality and watershed data on three streams, each representing watersheds in different parts of the coastal prairie. This fact sheet presents a summary of the pesticide data collected on East Fork Double Bayou from March to September 1994.

  15. Final report for the geothermal well site restoration and plug and abandonment of wells: DOE Pleasant Bayou test site, Brazoria County, Texas

    SciTech Connect

    Rinehart, Ben N.; Seigel, Ben H.

    1994-03-13

    For a variety of reasons, thousands of oil and gas wells have been abandoned in the Gulf Coast Region of the United States. Many of these wells penetrated geopressured zones whose resource potential for power generation was undervalued or ignored. The U.S. Department of Energy (DOE) Geopressured-Geothermal Research Program was chartered to improve geothermal technology to the point where electricity could be commercially produced from a substantial number of geopressured resource sites. This research program focused on relatively narrow technical issues that are unique to geopressured resources such as the ability to predict reservoir production capacity based on preliminary flow tests. Three well sites were selected for the research program. These are the Willis Hulin and Gladys McCall sites in Louisiana, and the Pleasant Bayou site in Texas. The final phase of this research project consists of plug and abandonment (P&A) of the wells and site restoration.

  16. Environmental baseline monitoring in the area of general crude oil - Department of Energy Pleasant Bayou Number 2: a geopressured geothermal test well, 1979. Annual report, Volume I

    SciTech Connect

    Gustavson, T.C.; Howard, R.C.; McGookey, D.

    1980-01-01

    A program to monitor baseline air and water quality, subsidence, microseismic activity, and noise in the vicinity of Brazoria County geopressured geothermal test wells, Pleasant Bayou No. 1 and No. 2, has been underway since March 1978. The initial report on environmental baseline monitoring at the test well contained descriptions of baseline air and water quality, a noise survey, an inventory of microseismic activity, and a discussion of the installation of a liquid tilt meter (Gustavson, 1979). The following report continues the description of baseline air and water quality of the test well site, includes an inventory of microseismic activity during 1979 with interpretations of the origin of the events, and discusses the installation and monitoring of a liquid tilt meter at the test well site. In addition, a brief description of flooding at the test site is presented.

  17. Prospective Optimization

    PubMed Central

    Sejnowski, Terrence J.; Poizner, Howard; Lynch, Gary; Gepshtein, Sergei; Greenspan, Ralph J.

    2014-01-01

    Human performance approaches that of an ideal observer and optimal actor in some perceptual and motor tasks. These optimal abilities depend on the capacity of the cerebral cortex to store an immense amount of information and to flexibly make rapid decisions. However, behavior only approaches these limits after a long period of learning while the cerebral cortex interacts with the basal ganglia, an ancient part of the vertebrate brain that is responsible for learning sequences of actions directed toward achieving goals. Progress has been made in understanding the algorithms used by the brain during reinforcement learning, which is an online approximation of dynamic programming. Humans also make plans that depend on past experience by simulating different scenarios, which is called prospective optimization. The same brain structures in the cortex and basal ganglia that are active online during optimal behavior are also active offline during prospective optimization. The emergence of general principles and algorithms for goal-directed behavior has consequences for the development of autonomous devices in engineering applications. PMID:25328167

  18. Tulane/Xavier Center for Bioenvironmental Research; project: hazardous materials in aquatic environments; subproject: biomarkers and risk assessment in Bayou Trepagnier, LA

    SciTech Connect

    Ide, C.

    1996-12-31

    Tulane and Xavier Universities have singled out the environment as a major strategic focus for research and training for now and beyond the year 2000. the Tulane/Xavier Center for Bioenvironmental Research (CBR) was established in 1989 as the umbrella organization to coordinate environmental research at both universities. CBR projects funded by the DOE under the Hazardous Materials in Aquatic Environments grant are defining the following: (1) the complex interactions that occur during the transport of contaminants through wetlands environments, (2) the actual and potential impact of contaminants on ecological systems and health, (3) the mechanisms and new technologies through which these impacts might be remediated, and (4) new programs aimed at educating and training environmental workers of the future. The subproject described in this report, `Biomarkers and Risk Assessment in Bayou Trepagnier, LN`, is particularly relevant to the US Department of Energy`s Environmental Restoration and Waste Management program aimed at solving problems related to hazard monitoring and clean-up prioritization at sites with aquatic pollution problems in the DOE complex.

  19. Prospect redux

    NASA Technical Reports Server (NTRS)

    Jacquemoud, S.; Ustin, S. L.; Verdebout, J.; Schmuck, G.; Andreoli, G.; Hosgood, B.

    1995-01-01

    The remote estimation of leaf biochemical content from spaceborne platforms has been the subject of many studies aimed at better understanding of terrestrial ecosystem functioning. The major ecological processes involved in exchange of matter and energy, like photosynthesis, primary production, evaportranspiration, respiration, and decomposition can be related to plant properties e.g., chlorophyll, water, protein, cellulose and lignin contents. As leaves represent the most important plant surfaces interacting with solar energy, a top priority has been to relate optical properties to biochemical constituents. Two different approaches have been considered: first, statistical correlations between the leaf reflectance (or transmittance) and biochemical content, and second, physically based models of leaf scattering and absorption developed using the laws of optics. Recently reviewed by Verdebout et al., the development of models of leaf optical properties has resulted in better understanding of the interaction of light with plant leaves. Present radiative transfer models mainly use chlorophyll and/or water contents as input parameters to calculate leaf reflectance. Inversion of these models allows to retrieve these constituents from spectrophotometric measurements. Conel et al. recently proposed a two-stream Kubelka-Munk model to analyze the influence of protein, cellulose, lignin, and starch on leaf reflectance, but in fact, the estimation of leaf biochemistry from remote sensing is still an open question. In order to clarify it, a laboratory experiment associating visible/infrared spectra of plan leaves both with physical measurements and biochemical analyses was conducted at the Joint Research Center during the summer of 1993. This unique data set has been used to upgrade the PROSPECT model, by including leaf biochemistry.

  20. Bayou virus detected in non-oryzomyine rodent hosts: an assessment of habitat composition, reservoir community structure, and marsh rice rat social dynamics.

    PubMed

    Holsomback, Tyla S; McIntyre, Nancy E; Nisbett, Richard A; Strauss, Richard E; Chu, Yong-Kyu; Abuzeineh, Alisa A; de la Sancha, Noé; Dick, Carl W; Jonsson, Colleen B; Morris, Brandon E L

    2009-06-01

    In the United States, Bayou virus (BAYV) ranks second only to Sin Nombre virus (SNV) in terms of hantavirus pulmonary syndrome (HPS) incidents, having been confirmed in cases from Texas and Louisiana since its discovery in 1994. This study on BAYV infection among sympatric, non-oryzomyine rodents ("spillover") in Freeport, TX, is the first to link patterns of hantavirus interspecific spillover with the spatiotemporal ecology of the primary host (marsh rice rat, Oryzomys palustris). Mark-recapture and/or harvest methods were employed from March 2002 through May 2004 in two macrohabitat types. Rodent blood samples were screened for the presence of IgG antibody to BAYV antigen by IFA after which Ab-positive blood, saliva, and urine were analyzed for the presence of viral RNA by nested RT-PCR. From 727 non-oryzomyine captures, five seropositive (but not viral RNA positive) individuals were detected: one each of Baiomys taylori, Peromyscus leucopus, and Reithrodontomys fulvescens; and two Sigmodon hispidus. Spillover hosts were not associated with macrohabitat where O. palustris abundance, density, or seroprevalence was highest. Rather, spillover occurred in the macrohabitat indicative of greater overall disturbance (as indicated by grazing and exotic plant diversity) and overall biodiversity. Spillover occurred during periods of high seroprevalence detected elsewhere within the study region. Spillover locations differed significantly from all other capture locations in terms of percent water, shrub, and grass cover. Although greater habitat and mammal diversity of old-fields may serve to reduce seroprevalence levels by tempering intraspecific contacts between rice rats, greater diversity also may create an ecologically opportunistic setting for BAYV spillover. Impacts of varying levels of disturbance and biodiversity on transmission dynamics represent a vastly uncharacterized component of the evolutionary ecology of hantaviruses. PMID:20836801

  1. Screening of three proposed DOE geopressured-geothermal aquifer natural gas project areas for potential conflicting commercial production: Freshwater Bayou, Lake Theriot, and Kaplan, Louisiana

    SciTech Connect

    Knutson, C.F.; Rogers, L.A.

    1982-02-01

    Three proposed DOE geopressured geothermal prospects defined by the Louisiana State University resource assessment group were screened for possible conflict with existing gas production. The analysis used the public records available at the Louisiana Department of Conservation offices in Baton Rouge and structural and statigraphic interpretations made by the L.S.U. resource assessment group. (MHR)

  2. Prospective memory: A comparative perspective

    PubMed Central

    Crystal, Jonathon D.; Wilson, A. George

    2014-01-01

    Prospective memory consists of forming a representation of a future action, temporarily storing that representation in memory, and retrieving it at a future time point. Here we review the recent development of animal models of prospective memory. We review experiments using rats that focus on the development of time-based and event-based prospective memory. Next, we review a number of prospective-memory approaches that have been used with a variety of non-human primates. Finally, we review selected approaches from the human literature on prospective memory to identify targets for development of animal models of prospective memory. PMID:25101562

  3. Applied Astronomy: Asteroid Prospecting

    NASA Astrophysics Data System (ADS)

    Elvis, M.

    2013-09-01

    In the age of asteroid mining the ability to find promising ore-bearing bodies will be valuable. This will give rise to a new discipline- "Applied Astronomy". Just as most geologists work in industry, not in academia, the same will be true of astronomers. Just how rare or common ore-rich asteroids are likely to be, and the skills needed to assay their value, are discussed here, with an emphasis on remote - telescopic - methods. Also considered are the resources needed to conduct extensive surveys of asteroids for prospecting purposes, and the cost and timescale involved. The longer-term need for applied astronomers is also covered.

  4. Prospective bonding applications

    NASA Astrophysics Data System (ADS)

    Ancenay, H.; Benazet, D.

    1981-07-01

    Adhesive bonding in industry and in the laboratory is surveyed and prospects for its wider utilization are assessed. The economic impact of bonding technology on industry is discussed. Research is reviewed, centering on the development of nondestructive testing and inspection techniques. Traditional (wood) as well as new materials susceptible to bonding are considered. Applications in construction and civil engineering, in aeronautics, and in the automobile industry are covered. The use of glues in mechanical constructions, in assembling cylindrical parts, and in metal-metal bonding are examined. Hybrid assembling and bonding of composite materials are included.

  5. Methane Clathrate Hydrate Prospecting

    NASA Technical Reports Server (NTRS)

    Duxbury, N.; Romanovsky, V.

    2003-01-01

    A method of prospecting for methane has been devised. The impetus for this method lies in the abundance of CH4 and the growing shortages of other fuels. The method is intended especially to enable identification of subpermafrost locations where significant amounts of methane are trapped in the form of methane gas hydrate (CH4(raised dot)6H2O). It has been estimated by the U.S. Geological Survey that the total CH4 resource in CH4(raised dot) 6H2O exceeds the energy content of all other fossil fuels (oil, coal, and natural gas from non-hydrate sources). Also, CH4(raised dot)6H2O is among the cleanest-burning fuels, and CH4 is the most efficient fuel because the carbon in CH4 is in its most reduced state. The method involves looking for a proxy for methane gas hydrate, by means of the combination of a thermal-analysis submethod and a field submethod that does not involve drilling. The absence of drilling makes this method easier and less expensive, in comparison with prior methods of prospecting for oil and natural gas. The proposed method would include thermoprospecting in combination with one more of the other non-drilling measurement techniques, which could include magneto-telluric sounding and/or a subsurface-electrical-resistivity technique. The method would exploit the fact that the electrical conductivity in the underlying thawed region is greater than that in the overlying permafrost.

  6. The Prospects Study and Desegregation.

    ERIC Educational Resources Information Center

    Puma, Michael J.

    1997-01-01

    Argues that greater caution is required when drawing conclusions from statistical results than the Armor study has done, and describes the "Prospects" study (begun in 1989), the largest longitudinal study of educational outcomes conducted in the United States. "Prospects" provides much data useful in evaluating the school desegregation situation…

  7. Prospective Memory Performance across Adolescence

    ERIC Educational Resources Information Center

    Wang, Lijuan; Kliegel, Matthias; Yang, Zhiliang; Liu, Wei

    2006-01-01

    In the present study, the authors explored age differences in event-based prospective memory (PM) across adolescence. The tasks consisted of an ongoing task (OT; i.e., personality questionnaire items, math problems) and an embedded prospective task that required participants to remember to make a special response whenever they encountered a PM cue…

  8. Prospect Theory and Coercive Bargaining

    ERIC Educational Resources Information Center

    Butler, Christopher K.

    2007-01-01

    Despite many applications of prospect theory's concepts to explain political and strategic phenomena, formal analyses of strategic problems using prospect theory are rare. Using Fearon's model of bargaining, Tversky and Kahneman's value function, and an existing probability weighting function, I construct a model that demonstrates the differences…

  9. Prospects at high energies

    SciTech Connect

    Quigg, C.

    1988-11-01

    I discuss some possibilities for neutrino experiments in the fixed-target environment of the SPS, Tevatron, and UNK, with their primary proton beams of 0.4, 0.9, and 3.0 TeV. The emphasis is on unfinished business: issues that have been recognized for some time, but not yet resolved. Then I turn to prospects for proton-proton colliders to explore the 1-TeV scale. I review the motivation for new physics in the neighborhood of 1 TeV and mention some discovery possibilities for high-energy, high-luminosity hadron colliders and the implications they would have for neutrino physics. I raise the possibility of the direct study of neutrino interactions in hadron colliders. I close with a report on the status of the SSC project. 38 refs., 17 figs.

  10. Prospecting with neutrinos

    NASA Astrophysics Data System (ADS)

    Bell, Peter M.

    One of the latest attempts to explore the interface between physics and geophysics is the extravagant scheme of Alvaro De Rújula, Sheldon Glashow, Robert Wilson, and Georges Charpak, to be published in Physics Reports. In what these theoretical and experimental physicists described recently as “our mad project” (Physics Today, August 1983), a high-energy neutrino beam is to be used as a geophysical prospecting tool.The beam would be able to look for oil, natural gas, and high-atomic-number metal ores, and it would be able to profile the vertical density distribution of the earth. De Rújula et al. come to this project from the world of big physics machines, so it is natural to expect that the “Geotron,” the field instrument to supply and focus the neutrino beam, is to be big also.

  11. Prospects of photoacoustic tomography

    PubMed Central

    Wang, Lihong V.

    2008-01-01

    Commercially available high-resolution three-dimensional optical imaging modalities—including confocal microscopy, two-photon microscopy, and optical coherence tomography—have fundamentally impacted biomedicine. Unfortunately, such tools cannot penetrate biological tissue deeper than the optical transport mean free path (∼1 mm in the skin). Photoacoustic tomography, which combines strong optical contrast and high ultrasonic resolution in a single modality, has broken through this fundamental depth limitation and achieved superdepth high-resolution optical imaging. In parallel, radio frequency-or microwave-induced thermoacoustic tomography is being actively developed to combine radio frequency or microwave contrast with ultrasonic resolution. In this Vision 20∕20 article, the prospects of photoacoustic tomography are envisaged in the following aspects: (1) photoacoustic microscopy of optical absorption emerging as a mainstream technology, (2) melanoma detection using photoacoustic microscopy, (3) photoacoustic endoscopy, (4) simultaneous functional and molecular photoacoustic tomography, (5) photoacoustic tomography of gene expression, (6) Doppler photoacoustic tomography for flow measurement, (7) photoacoustic tomography of metabolic rate of oxygen, (8) photoacoustic mapping of sentinel lymph nodes, (9) multiscale photoacoustic imaging in vivo with common signal origins, (10) simultaneous photoacoustic and thermoacoustic tomography of the breast, (11) photoacoustic and thermoacoustic tomography of the brain, and (12) low-background thermoacoustic molecular imaging. PMID:19175133

  12. ANAIS: Status and prospects

    NASA Astrophysics Data System (ADS)

    Amaré, J.; Cebrián, S.; Cuesta, C.; García, E.; Ginestra, C.; Martínez, M.; Oliván, M. A.; Ortigoza, Y.; Ortiz de Solórzano, A.; Pobes, C.; Puimedón, J.; Sarsa, M. L.; Villar, J. A.; Villar, P.

    2016-07-01

    ANAIS experiment will look for dark matter annual modulation with large mass of ultra-pure NaI(Tl) scintillators at the Canfranc Underground Laboratory (LSC), aiming to confirm the DAMA/LIBRA positive signal in a model-independent way. Two 12.5 kg each NaI(Tl) crystals provided by Alpha Spectra are currently taking data at the LSC. Present status of ANAIS detectors background and general performance is summarized; in particular, thanks to the high light collection efficiency prospects of lowering the threshold down to 1 keVee are reachable. Crystal radiopurity goals are fulfilled for 232Th and 238U chains and 40K activity, although higher than original goal, could be accepted; however, high 210Pb contamination out-of-equilibrium has been identified. More radiopure detectors are being built by Alpha Spectra. The ongoing high quantum efficiency PMT tests and muon veto characterization are also presented. Finally, the sensitivity of the experiment for the annual modulation in the WIMP signal, assuming the already achieved threshold and background in ANAIS-25 is shown. Further improvement should be achieved by reducing both threshold and background, as expected.

  13. German energy technology prospects.

    PubMed

    Popp, M

    1982-12-24

    After more than 25 years of development of nuclear power and almost 10 years of research and development in numerous areas of nonnuclear energy, there is now a good basis for judging the future prospects of energy technologies in the Federal Republic of Germany. The development of nuclear power has provided an important and economically advantageous new source of energy. Further efforts are needed to establish the nuclear fuel cycle in all stages and to exploit the potential of advanced reactors. In all other areas of energy technology, including energy conservation, new energy sources, and coal, economics has turned out to be the key problem, even at today's energy prices. Opportunities to overcome these economic problems through additional R & D are limited. There is some potential for special applications, and there are many technologies that could contribute to the energy supply of developing countries. In general, however, progress in energy conservation and the use of renewable energy sources will depend on the degree to which energy policy measures can improve their economic basis. For some technologies, such as solar thermal power stations and coal liquefaction, large-scale economic deployment cannot be foreseen today. Instead of establishing costly demonstration projects, emphasis will be put on improving key components of these technologies with the aim of having the most advanced technology available when the economic parameters are more favorable. PMID:17770150

  14. Resolution in Electromagnetic Prospecting

    NASA Astrophysics Data System (ADS)

    Aldridge, D. F.; Bartel, L. C.; Knox, H. A.; Schramm, K. A.

    2014-12-01

    Low-frequency electromagnetic (EM) signals are commonly used in geophysical exploration of the shallow subsurface. Sensitivity to conductivity implies they are particularly useful for inferring fluid content of porous media. However, low-frequency EM wavefields are diffusive, and have significantly larger wavelengths compared to seismic signals of equal frequency. The wavelength of a 30 Hz sinusoid propagating with seismic velocity 3000 m/s is 100 m, whereas an analogous EM signal diffusing through a conductive body of 0.1 S/m (clayey shale) has wavelength 1825 m. The larger wavelength has implications for resolution of the EM prospecting method. We are investigating resolving power of the EM method via theoretical and numerical experiments. Normal incidence plane wave reflection/transmission by a thin geologic bed is amenable to analytic solution. Responses are calculated for beds that are conductive or resistive relative to the host rock. Preliminary results indicate the classic seismic resolution/detection limit of bed thickness ~1/8 wavelength is not achieved. EM responses for point or line current sources recorded by general acquisition geometries are calculated with a 3D finite-difference algorithm. These exhibit greater variability which may allow inference of bed thickness. We also examine composite responses of two point scatterers with separation when illuminated by an incident EM field. This is analogous to the Rayleigh resolution problem of estimating angular separation between two light sources. The First Born Approximation implies that perturbations in permittivity, permeability, and conductivity have different scattering patterns, which may be indicators of EM medium properties. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the US Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.

  15. Bacterial Exopolysaccharides: Functionality and Prospects

    PubMed Central

    Nwodo, Uchechukwu U.; Green, Ezekiel; Okoh, Anthony I.

    2012-01-01

    Diverse structural, functional and valuable polysaccharides are synthesized by bacteria of all taxa and secreted into the external environment. These polysaccharides are referred to as exopolysaccharides and they may either be homopolymeric or heteropolymeric in composition and of diverse high molecular weights (10 to 1000 kDa). The material properties of exopolysaccharides have revolutionized the industrial and medical sectors due to their retinue of functional applications and prospects. These applications have been extensive in areas such as pharmacological, nutraceutical, functional food, cosmeceutical, herbicides and insecticides among others, while prospects includes uses as anticoagulant, antithrombotic, immunomodulation, anticancer and as bioflocculants. Due to the extensive applications of bacterial exopolysaccharides, this overview provides basic information on their physiologic and morphologic functions as well as their applications and prospects in the medical and industrial sectors. PMID:23203046

  16. Remote sensors - Prospects and limitations

    NASA Technical Reports Server (NTRS)

    Lehmann, J.

    1973-01-01

    Review of the history, present status, and future prospects and limitations of remote sensing systems for satellite-based earth resources surveys. The objectives and special areas of interest of ongoing sensor development experiments are summarized, and the measurement and performance goals of current potential sensor research is discussed.

  17. 2007 NCLB Prospects Are Fading

    ERIC Educational Resources Information Center

    Hoff, David J.

    2007-01-01

    Supporters and critics of the No Child Left Behind Act (NCLB) agree on only one thing and that the law should be fixed and quickly. However, it looks that Congress will not be able to make much progress in addressing the flaws of NCLB this year. This circumstance will endanger the prospects that the revision of the law might not be completed…

  18. Job Prospects for Aerospace Engineers.

    ERIC Educational Resources Information Center

    Basta, Nicholas

    1987-01-01

    Discusses the recent trends in job opportunities for aerospace engineers. Mentions some of the political, technological, and economic factors affecting the overall employment picture. Includes a description of the job prospects created by the general upswing of the large commercial aircraft market. (TW)

  19. Prospects: Student Outcomes. Final Report.

    ERIC Educational Resources Information Center

    Puma, Michael J.; Karweit, Nancy; Price, Cristofer; Ricciuti, Anne; Thompson, William; Vaden-Kiernan, Michael

    This report is one of a series presenting findings from "Prospects: The Congressionally Mandated Study of Educational Growth and Opportunity." This study, conducted in response to the 1988 Hawkins-Stafford Amendments, was a major effort to examine the effects of Chapter 1 on student achievement and other school-related educational outcomes. Data…

  20. Job Prospects for Civil Engineers.

    ERIC Educational Resources Information Center

    Basta, Nicholas

    1985-01-01

    Government programs and renewed industrial activity have combined with stable enrollments to create bright job prospects for civil engineers. Areas with good opportunities include highway reconstruction and rehabilitation, water-resource management, and new factory construction. The subspecialty of structural engineering has a growing need in…

  1. Job Prospects for Electrical Engineers.

    ERIC Educational Resources Information Center

    Basta, Nicholas

    1986-01-01

    Discusses the career outlook for electrical/electronics engineers. Explains that the number of bachelor degree graduates continues to rise, along with average starting salaries. Reveals that although the availability of jobs in the computer industry is leveling off, prospects in the robotics and telecommunication fields are growing. (TW)

  2. Job Prospects for Metallurgical Engineering.

    ERIC Educational Resources Information Center

    Basta, Nicholas

    1985-01-01

    Job prospects in mining, metal-extraction, steel, and refining industries are depressed, but technological discoveries are opening up new fields for metallurgical engineers. Enrollment/employment opportunities and salaries in these areas are discussed a well as the roles of foreign competition, plastics applications, and ceramics research and…

  3. Job Prospects for Marine Engineers.

    ERIC Educational Resources Information Center

    Basta, Nicholas

    1986-01-01

    Marine engineering is one of the smaller disciplines that have grown during recent decades. Job prospects in this field, salaries, types of employers (particularly Navy shipbuilding and infrastructure work), and marine/ocean engineers involvement with environmental issues are discussed. (JN)

  4. Scientific knowledge and modern prospecting

    USGS Publications Warehouse

    Neuerburg, G.J.

    1985-01-01

    Modern prospecting is the systematic search for specified and generally ill-exposed components of the Earth's crust known as ore. This prospecting depends entirely on reliable, or scientific knowledge for guidance and for recognition of the search objects. Improvement in prospecting results from additions and refinements to scientific knowledge. Scientific knowledge is an ordered distillation of observations too numerous and too complex in themselves for easy understanding and for effective management. The ordering of these observations is accomplished by an evolutionary hierarchy of abstractions. These abstractions employ simplified descriptions consisting of characterization by selected properties, sampling to represent much larger parts of a phenomenon, generalized mappings of patterns of geometrical and numerical relations among properties, and explanation (theory) of these patterns as functional relations among the selected properties. Each abstraction is predicated on the mode of abstraction anticipated for the next higher level, so that research is a deductive process in which the highest level, theory, is indispensible for the growth and refinement of scientific knowledge, and therefore of prospecting methodology. ?? 1985 Springer-Verlag.

  5. Handbook for Prospective Single Parents.

    ERIC Educational Resources Information Center

    Marindin, Hope

    This handbook for prospective single adoptive parents provides information on locating and adopting a child, necessary clothing and supplies for children of various ages, health and day care arrangements, expenses incurred after adoption, various financial benefits and subsidies available to the adoptive parent, and legal and financial provisions…

  6. Electron Polarimetry: Status and Prospects

    SciTech Connect

    Eugene Chudakov

    2005-04-01

    Polarized electron beams are used widely for DIS, parity violation, and other experiments. I discuss the methods and instrumentation used to measure the electron beam polarization, as well as the prospects for the future facilities. A number of recent achievements and projects are discussed.

  7. Prospective Memory Training in Older Adults.

    ERIC Educational Resources Information Center

    Schmidt, Iris W.; Berg, Ina J.; Deelman, Betto G.

    2001-01-01

    Twenty adults received training in prospective memory; 23 who received training in reducing worries about forgetfulness and 22 controls formed a comparison group. Results of a telephone task and a prospective categorization task revealed significant but small effects for the prospective memory group. After 3 months, the comparison group's…

  8. 33 CFR 117.465 - Lafourche Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... citations affecting § 117.465, see the List of CFR Sections Affected, which appears in the Finding Aids... a.m.; from 2 p.m. to 4 p.m.; and from 4:30 p.m. to 5:30 p.m.: (1) SR 308 (Golden Meadow) Bridge..., from 6 p.m. to 6 a.m., the draw shall open on signal if at least four hours advance notification...

  9. Buffalo Bayou National Heritage Area Act

    THOMAS, 112th Congress

    Sen. Hutchison, Kay Bailey [R-TX

    2011-01-25

    05/11/2011 Committee on Energy and Natural Resources Subcommittee on National Parks. Hearings held. With printed Hearing: S.Hrg. 112-124. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  10. 33 CFR 117.465 - Lafourche Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... railroad bridge, mile 69.0 at Lafourche, and all bridges upstream of the Burlington Northern Santa Fe..., mile 23.9, at Golden Meadow (2) Galliano Pontoon Bridge, mile 27.8, at Galliano (3) SR 308 (South...) Cutoff Vertical Lift Bridge, mile 36.3, at Cutoff (6) SR 310 (Larose Pontoon) Bridge, mile 39.1,...

  11. Bayou Vista: A Market-Driven Development

    ERIC Educational Resources Information Center

    Izzo, G. Martin; Teal, Elisabeth J.

    2012-01-01

    The case touches on several areas of marketing: ethics, sales issues, conflicts of interest, marketing forecasts, and issues of pricing. Joe Brice, the visionary and real estate broker for a 36-lot subdivision of moderately priced single-family homes targeting the $190,000 to $260,000 range, seems to have identified an unmet housing market,…

  12. 33 CFR 117.501 - Teche Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... bridge, mile 48.7 at Olivier. (14) S3195 bridge, mile 50.4 at New Iberia. (15) S87 Spur bridge, mile 52.5 at New Iberia. (16) S86 bridge, mile 53.0 at New Iberia. (17) S3156 bridge, mile 53.3 at New Iberia. (18) S44 bridge, mile 56.7 at Morbihan. (19) Iberia Parish bridge, mile 58.0 at New Iberia....

  13. Prospective errors determine motor learning.

    PubMed

    Takiyama, Ken; Hirashima, Masaya; Nozaki, Daichi

    2015-01-01

    Diverse features of motor learning have been reported by numerous studies, but no single theoretical framework concurrently accounts for these features. Here, we propose a model for motor learning to explain these features in a unified way by extending a motor primitive framework. The model assumes that the recruitment pattern of motor primitives is determined by the predicted movement error of an upcoming movement (prospective error). To validate this idea, we perform a behavioural experiment to examine the model's novel prediction: after experiencing an environment in which the movement error is more easily predictable, subsequent motor learning should become faster. The experimental results support our prediction, suggesting that the prospective error might be encoded in the motor primitives. Furthermore, we demonstrate that this model has a strong explanatory power to reproduce a wide variety of motor-learning-related phenomena that have been separately explained by different computational models. PMID:25635628

  14. Prospects for nuclear safety research

    SciTech Connect

    Beckjord, E.S.

    1995-04-01

    This document is the text of a paper presented by Eric S. Beckjord (Director, Nuclear Regulatory Research/NRC) at the 22nd Water Reactor Safety Meeting in Bethesda, MD in October 1994. The following topics are briefly reviewed: (1) Reactor vessel research, (2) Probabilistic risk assessment, (3) Direct containment heating, (4) Advanced LWR research, (5) Nuclear energy prospects in the US, and (6) Future nuclear safety research. Subtopics within the last category include economics, waste disposal, and health and safety.

  15. Prospects for de-automatization.

    PubMed

    Kihlstrom, John F

    2011-06-01

    Research by Raz and his associates has repeatedly found that suggestions for hypnotic agnosia, administered to highly hypnotizable subjects, reduce or even eliminate Stroop interference. The present paper sought unsuccessfully to extend these findings to negative priming in the Stroop task. Nevertheless, the reduction of Stroop interference has broad theoretical implications, both for our understanding of automaticity and for the prospect of de-automatizing cognition in meditation and other altered states of consciousness. PMID:20356765

  16. Atmospheric neutrinos: Status and prospects

    NASA Astrophysics Data System (ADS)

    Choubey, Sandhya

    2016-07-01

    We present an overview of the current status of neutrino oscillation studies at atmospheric neutrino experiments. While the current data gives some tantalising hints regarding the neutrino mass hierarchy, octant of θ23 and δCP, the hints are not statistically significant. We summarise the sensitivity to these sub-dominant three-generation effects from the next-generation proposed atmospheric neutrino experiments. We next present the prospects of new physics searches such as non-standard interactions, sterile neutrinos and CPT violation studies at these experiments.

  17. Prospects of thermionic power systems

    NASA Technical Reports Server (NTRS)

    Shimada, K.

    1978-01-01

    Potential thermionic power systems for space or terrestrial applications are described so that the development goals can be clearly identified. The thermionic power systems considered are a space nuclear power system, a fossil-fuel thermionic topping steam power system, a solar thermionic topping steam power system, and advanced systems. Attention is given to a discussion of the current status of technology development in thermionic converters and associated elements in power systems. Future prospects of thermionic power systems are also discussed. It is concluded that thermionic conversion has a great potential for a variety of applications.

  18. Advance and prospect of bionanomaterials.

    PubMed

    Cui, Daxiang; Gao, Huajian

    2003-01-01

    Over the past few years, bionanomaterial science has emerged as a new exciting field in which theoretical and experimental studies of structure and function of bionanomaterials have become a focus, and the importance of DNA, RNA, and peptides as bionanomaterials to the fundamental development in biology and nanomaterials has begun to be recognized. In particular, biochemistry, biophysics, biomechanics, thermodynamics, and electronic properties of DNA, RNA, and peptides, as well as intelligent composite biological materials, have become a new interdisciplinary frontier in life science and material science. There is an increasing need for a more systematic study of the basic issues involved in bionanomaterials and a more active participation of researchers in the application domain of such novel materials. Great advances have been and are being made in nanobiochip materials, nanoscale biomimetic materials, nanomotors, nanocomposite materials, interface biomaterials, and nanobiosensor and nano drug delivery systems, with enormous prospect in industrial, defense, and clinical medicine applications. Here we review some of the main advances in this field over the past few years, explore the application prospects, and discuss the concepts, issues, approaches, and challenges, with the aim of stimulating a broader interest in developing bionanomaterials technology. PMID:12790626

  19. Nanocarbon Technologies: Prospects and Risks

    NASA Astrophysics Data System (ADS)

    Kozyrev, S.; Yakutseni, P.

    In this paper we review the current state and prospects of carbon nano-technologies as a new emerging point for atomic-molecular manipulation, design and discovery connected with fullerenes, carbon nanotubes and biology. The merging nanoscale interface between carbon and biology structures are shortly discussed in terms of fundamental insights and possible applications encompassing nanobionics as lessons from animate nature, artificial modifications of living systems as well as multicomponent molecular structures for biology, physics, chemistry, engineering, and medicine. Protein-based as well as carbohydrates-, lipids-, or DNA-based molecular assemblies loaded with nanocarbon are addressed in the context of the engineering systems design. Several examples from our collaborative work are used to demonstrate connections between points of nano and bio and to show how such an interdisciplinary approach has led us to new ideas and applications. Nanocarbons have little similarity with the well-known biologically active substances. There is no oxygen, nitrogen, phosphorous-containing or other typical moieties, such as common pharmacophoric anchors or groups. In the same time fullerenes demonstrated a wide spectrum of biological activity. Mechanisms of their biological action are still unknown. For this reason our work was focused on the computer-based molecular modeling of the action of nanocarbon structures on the well-known biological structures: proteins, DNA, carbohydrates, and lipid molecules. Possible biological hazards, fundamental questions and prospects associated with nano-carbon technologies are highlighted.

  20. Petroleum prospecting in the Arab world

    SciTech Connect

    Not Available

    1985-01-01

    This book discusses about oil and gas exploration in the Arab countries. After describing the chemistry and formation of petroleum and steps involved in prospecting, the book surveys the history and results of prospecting in each country. It also provides diagrams, maps, appended reserves and production data, and English equivalent terms.

  1. Prospective Elemantary Science Teachers' Epistemological Beliefs

    ERIC Educational Resources Information Center

    Macaroglu Akgul, Esra; Oztuna Kaplan, Aysun

    2009-01-01

    This research study examined "prospective elementary science teachers' epistemological beliefs". Forty-nine prospective elementary science teachers participated into research. The research was designed in both quantitative and qualitative manner, within the context of "Special Methods in Science Teaching I" course. Participants' epistemological…

  2. 36 CFR 228.60 - Prospecting permits.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... to the extent necessary for testing and analysis or for the demonstration of the existence of a suitable deposit. (c) Environmental analysis. Prospecting permits will be issued only after submission by... prospecting permit may not cover more than 640 acres. No individual or group may have an interest at any...

  3. Prospect Research: A How-to Guide.

    ERIC Educational Resources Information Center

    Strand, Bobbie J., Ed.; Hunt, Susan, Ed.

    Advice on prospect research to help colleges raise more money from major donors is provided in 14 chapters, and 15 sample forms for processing research are appended. The advice covers how to discover prospects' interests and assets, and the potential match of a donor to the college's needs. Chapters address: collecting, organizing, and evaluating…

  4. Change, Stability and Context: Prospective Teachers' Perceptions

    ERIC Educational Resources Information Center

    Sahin, Abdurrahman; Cokadar, Hulusi

    2009-01-01

    This study aims to explore and compare first-year and fourth-year prospective teachers' perceptions of good teaching, a good teacher, and a good student. A questionnaire with close- and open-ended questions was administered to 142 first-year and 138 fourth-year prospective teachers enrolled in the Faculty of Education at Pamukkale University.…

  5. Prospective Teachers' Perspectives on Microteaching Lesson Study

    ERIC Educational Resources Information Center

    Fernandez, Maria L.; Robinson, Matthew

    2006-01-01

    Microteaching Lesson Study [MLS] is a cooperative learning experience that we felt could challenge our prospective teachers thinking about teaching and support their connection of theory and practice during an initial course on learning to teach mathematics. We studied seventy-four prospective teachers' perspectives on MLS over four sections of…

  6. Prospective Science Teachers' Conceptions about Astronomical Subjects

    ERIC Educational Resources Information Center

    Küçüközer, Hüseyin

    2007-01-01

    The main objective of this study was to identify prospective science teachers' conceptions on basic astronomical phenomena. A questionnaire consisting of nine open-ended questions was administered to 327 prospective science teachers. The questionnaire was constructed after extensive review of the literature and took into consideration the reported…

  7. [Radioprotectors: History, Trends and Prospects].

    PubMed

    Gudkov, S V; Popova, N R; Bruskov, V I

    2015-01-01

    The search for ideal protective agents for use in a variety of radiation scenarios has continued for more than six decades. This review describes the history of the major discoveries, shows the chronology of the changes in attitudes, trends and paradigms. The readers are invited to meet with various classes of chemical compounds that have the potential to protect against acute and late effects of ionizing radiation when administered either before or after radiation exposure. The work represents characteristics of radioprotective agents such as a dose reduction factor, time of administration, tissue specificity, toxicity; the mechanisms of their action and practical applications are also described. A separate chapter considers the further development prospects and directions in this field of research. PMID:26394481

  8. Prospecting Rovers for Lunar Exploration

    NASA Technical Reports Server (NTRS)

    Graham, Jerry B.; Vaughn, Jason A.; Farmer, Jeffery T.

    2007-01-01

    A study of lunar rover options for exploring the permanently shadowed regions of the lunar environment is presented. The potential for nearly continuous solar illumination coupled with the potential for water ice, focus exploration planner's attention on the polar regions of the moon. These regions feature craters that scientists have reason to believe may contain water ice. Water ice can be easily converted to fuel cell reactants, breathing oxygen, potable water, and rocket propellant. For these reasons, the NASA Robotic Lunar Exploration Program (RLEP) sponsored a study of potential prospecting rover concepts as one part of the RLEP-2 Pre-Phase A. Numerous vehicle configurations and power, thermal, and communication options are investigated. Rover options in the 400kg to 530kg class are developed which are capable of either confirming the presence of water ice at the poles, or conclusively demonstrating its absence.

  9. Radiation detectors: needs and prospects

    SciTech Connect

    Armantrout, G.A.

    1981-01-01

    Important applications for x- and ..gamma..-ray spectroscopy are found in prospecting, materials characterization, environmental monitoring, the life sciences, and nuclear physics. The specific requirements vary for each application with varying degrees of emphasis on either spectrometer resolution, detection efficiency, or both. Since no one spectrometer is ideally suited to this wide range of needs, compromises are usually required. Gas and scintillation spectrometers have reached a level of maturity, and recent interest has concentrated on semiconductor spectrometers. Germanium detectors are showing continuing refinement and are the spectrometers of choice for high resolution applications. The new high-Z semiconductors, such as CdTe and HgI/sub 2/, have shown steady improvement but are limited in both resolution and size and will likely be used only in applications which require their unique properties.

  10. Model for reworked deltaic sands - Example from South Lake Arthur, Bayou Gentily, and Bayou Lery Fields

    SciTech Connect

    Saxena, R.S. )

    1990-09-01

    Reworked deltaic sands are beach-barrier sand bodies that are produced by the reworking of abandoned deltaic lobes. The facies association of these sand bodies makes them ideal reservoirs, and although abundant hydrocarbons are trapped in this type of sandstone, their genesis is seldom understood in the petroleum world. Criteria and models are developed for the recognition of reworked deltaic sand bodies from the subsurface by comparing a Holocene analog from the eastern periphery of the modern Mississippi delta with an ancient example from the Carboniferous of the northern Appalachian plateau. A simulated seismic model and several subsurface examples are presented.

  11. Prospects for European labour demand.

    PubMed

    Lindley, R M

    1988-07-01

    The impact of economic and technological trends upon the level and structure of labor demand is examined, exploring the methods used to model the labor market and making special reference to demography and technology. Evidence on recent and prospective changes in labor demand is reviewed for France, Germany, Italy, the Netherlands, and the UK. The models used to explore future employment scenarios usually fail to incorporate the linkages required to fully analyze the various demographic-economic interactions. Further, this is not generally viewed as a limitation, given the time frame of most employment projections and their preoccupation with changes in the structure of labor demand. Medium-term multisectoral models tend to pay more attention to both demographic and technical change, but the treatment of both aspects is limited. The projections provide a framework for considering how both socioeconomic behavior and policy might change to achieve different outcomes. The greater a model's behavioral content, as expressed in its relationships between different variables, the greater the insight obtainable from simulation exercises. The 1st half of the 1970s was characterized by a reduction in German employment, representing the severest of European reactions to the oil crisis. The 2nd half of the decade recorded rapid growth in Italy and the Netherlands. The 1980s started with marked declines in Germany and the UK. Overall, the net gains of the 1970s were lost in the recession following the 2nd oil crisis. In none of the 5 countries studied does any realistic prospect emerge of achieving full employment before 2000. The most optimistic outcome is that unemployment will decline only slowly, it at all. The growth of both new forms and areas of employment will not compensate sufficiently for the loss of jobs elsewhere and the growth of labor supply. The industrial sector will continue to experience change in favor of the service sector but at a slower rate than during

  12. Vibrator for seismic geophysical prospecting

    SciTech Connect

    Bird, J.M.

    1987-04-21

    An improved vibrator system is described for seismic geophysical prospecting, comprising: a vibrator comprising a first part, or dynamic vibrator part (VD) attached to a base plate in contact with the earth and a second part or vibrator stationary part (VS). Sound attenuating ear protection apparatus is described comprising: a pair of air evacuated, sealed chamber members disposably covering the ears of a user to lie between the user eardrums and an ear external source of undesirable sound energy; the air evacuated sealed chamber members each including first and second smooth surface portions with each surface portion having a spherical segment terminated by an annular flange lip shape and being disposable over one external ear of the user with one spherical segment, adjacent the ear being of different, higher mechanical resonance frequency with respect to the other spherical segment distal of the ear; the surface segment distal of the ear; the annular flange lips of the first and second surface portions being joined together in a junction disposed intermediate of the first and second spherical surface portions and perpendicular of the flange lips; resilient suspension means engaged with the head of the user and with the sealed chamber members for supporting the sealed chamber members in selected position over the user external ears.

  13. Structural Correlates of Prospective Memory

    PubMed Central

    Gordon, Brian A; Shelton, Jill T; Bugg, Julie M; McDaniel, Mark A; Head, Denise

    2011-01-01

    Prospective memory (PM) includes the encoding and maintenance of an intention, and the retrieval and execution of this intention at the proper moment in the future. The present study expands upon previous behavioral, electrophysiological, and functional work by examining the association between grey matter volume and PM. Estimates of grey matter volume in theoretically relevant regions of interest (prefrontal, parietal, and medial temporal) were obtained in conjunction with performance on two PM tasks in a sample of 39 cognitively normal and very mildly demented older adults. The first PM task, termed focal in the literature, is supported by spontaneous retrieval of the PM intention whereas the second, termed non-focal, relies on strategic monitoring processes for successful intention retrieval. A positive relationship was observed between medial temporal volume and accuracy on the focal PM task. An examination of medial temporal lobe subregions revealed that this relationship was strongest for the hippocampus, which is considered to support spontaneous memory retrieval. There were no significant structure-behavior associations for the non-focal PM task. These novel results confirm a relationship between behavior and underlying brain structure proposed by the multiprocess theory of PM, and extend findings on cognitive correlates of medial temporal lobe integrity. PMID:21982698

  14. North American tidal power prospects

    NASA Astrophysics Data System (ADS)

    Wayne, W. W., Jr.

    1981-07-01

    Prospects for North American tidal power electrical generation are reviewed. Studies by the US Army Corps of Engineers of 90 possible generation schemes in Cobscook Bay, ME, indicated that maximum power generation rather than dependable capacity was the most economic method. Construction cost estimates for 15 MW bulb units in a single effect mode from basin to the sea are provided; five projects were considered ranging from 110-160 MW. Additional tidal power installations are examined for: Half-Moon Cove, ME (12 MW, 18 ft tide); Cook Inlet, AK, which is shown to pose severe environmental and engineering problems due to fish migration, earthquake hazards, and 300 ft deep silt deposits; and the Bay of Fundy, Canada. This last has a 17.8 MW plant under construction in a 29 ft maximum tide area. Other tidal projects of the Maritime Provinces are reviewed, and it is noted that previous economic evaluations based on an oil price of $16/barrel are in need of revision.

  15. Prospects for Future Helioseismology Missions

    NASA Astrophysics Data System (ADS)

    Scherrer, Philip H.

    The progress afforded by present and past helioseismology missions has been the topic of this and numerous previous conferences. The primary conclusion of the 1983 NASA study on prospects for solar oscillations have been basically confirmed. That is, part of the job can be done on the ground but a significant part can only be done from space. While we have made significant progress, it is also clear that additional opportunities to use helioseismic techniques to better understand stellar interiors remain. Recent advances in local helioseismology in particular point to additional observing requirements. These include larger field of view at high resolution in order to follow magnetic region development, longer baselines in longitude to probe the bottom of the convection zone and below, and a high latitude vantage point to examine processes near the rotation axis. Several possible missions have been discussed recently to address these issues. They include SONAR, Farside Observer, Solar Polar Imager, and Solar Probe. The basic concepts of these missions will be discussed along with the continuing role for enhanced ground based observations.

  16. Prospects for Tokamak Fusion Reactors

    SciTech Connect

    Sheffield, J.; Galambos, J.

    1995-04-01

    This paper first reviews briefly the status and plans for research in magnetic fusion energy and discusses the prospects for the tokamak magnetic configuration to be the basis for a fusion power plant. Good progress has been made in achieving fusion reactor-level, deuterium-tritium (D-T) plasmas with the production of significant fusion power in the Joint European Torus (up to 2 MW) and the Tokamak Fusion Test Reactor (up to 10 MW) tokamaks. Advances on the technologies of heating, fueling, diagnostics, and materials supported these achievements. The successes have led to the initiation of the design phases of two tokamaks, the International Thermonuclear Experimental Reactor (ITER) and the US Toroidal Physics Experiment (TPX). ITER will demonstrate the controlled ignition and extended bum of D-T plasmas with steady state as an ultimate goal. ITER will further demonstrate technologies essential to a power plant in an integrated system and perform integrated testing of the high heat flux and nuclear components required to use fusion energy for practical purposes. TPX will complement ITER by testing advanced modes of steady-state plasma operation that, coupled with the developments in ITER, will lead to an optimized demonstration power plant.

  17. Prospects of ITER Instability Control

    NASA Astrophysics Data System (ADS)

    Kolemen, Egemen

    2015-11-01

    Prospects for real-time MHD stability analysis, plasma response calculations, and their use in ELM, NTM, RWM control and EFC will be discussed. ITER will need various controls to work together in order to achieve the stated goal of Q >= 10 for multiple minutes. These systems will allow operating at high beta while avoiding disruptions that may lead to damage to the reactor. However, it has not yet been demonstrated whether the combined real-time feedback control aim is feasible given the spectrum of plasma instabilities, the quality of the real-time diagnostic measurement/analysis, and the actuator set at ITER. We will explain challenges of instability control for ITER based on experimental and simulation results. We will demonstrate that it will not be possible to parameterize all possible disruption avoidance and ramp down scenarios that ITER may encounter. An alternative approach based on real-time MHD stability analysis and plasma response calculations, and its use in ELM, NTM, RWM control and EFC, will be demonstrated. Supported by the US DOE under DE-AC02-09CH11466.

  18. Procreative beneficence and the prospective parent.

    PubMed

    Herissone-Kelly, P

    2006-03-01

    Julian Savulescu has given clear expression to a principle-that of "procreative beneficence"-which underlies the thought of many contemporary writers on bioethics. The principle of procreative beneficence (PPB) holds that parents or single reproducers are at least prima facie obliged to select the child, out of a range of possible children they might have, who will be likely to lead the best life. My aim in this paper is to argue that prospective parents, just by dint of their being prospective parents, are in fact not obliged to act on PPB. That is, there is something about their filling the role of prospective parents that exempts them from selecting the child with the best life. I urge that it is more realistic to view prospective parents as bound by a principle of acceptable outlook, which holds that they ought not to select children whose lives will contain an unacceptable amount of suffering. PMID:16507665

  19. Nuclear radiation cleanup and uranium prospecting

    DOEpatents

    Mariella, Jr., Raymond P.; Dardenne, Yves M.

    2016-02-02

    Apparatus, systems, and methods for nuclear radiation cleanup and uranium prospecting include the steps of identifying an area; collecting samples; sample preparation; identification, assay, and analysis; and relating the samples to the area.

  20. Hypnosis Attenuates Executive Cost of Prospective Memory.

    PubMed

    Demeter, Gyula; Szendi, István; Juhász, Marianna; Kovács, Zoltán Ambrus; Boncz, István; Keresztes, Attila; Pajkossy, Péter; Racsmány, Mihály

    2016-01-01

    Prospective memory is the ability to formulate and carry out actions at the appropriate time or in the appropriate context. This study aimed to identify the effect of hypnosis on prospective memory performance and to analyze the involvement of executive control processes in intention realization in a hypnotically altered state of consciousness. In 1 experiment, manipulating hypnotic instruction in a within-subject fashion, the authors explored the event-based prospective memory performance of 23 volunteers in 3 conditions: baseline, expectation, and execution. The primary result was that executing prospective memory responses, at the same accuracy rate, produced a significantly lower cost of ongoing responses in terms of response latency in the hypnotic state than in wake condition. PMID:26894423

  1. Vision Trouble Can Dim Life's Prospects

    MedlinePlus

    ... page: https://medlineplus.gov/news/fullstory_160136.html Vision Trouble Can Dim Life's Prospects But it's not ... THURSDAY, July 28, 2016 (HealthDay News) -- People with vision problems may face a higher risk of unemployment, ...

  2. 48 CFR 52.214-6 - Explanation to Prospective Bidders.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Explanation to Prospective....214-6 Explanation to Prospective Bidders. As prescribed in 14.201-6(c)(2), insert the following provision: Explanation to Prospective Bidders (APR 1984) Any prospective bidder desiring an explanation...

  3. Prospecting for marine gas hydrate resources

    USGS Publications Warehouse

    Boswell, Ray; Shipp, Craig; Reichel, Thomas; Shelander, Dianna; Saeki, Tetsuo; Frye, Matthew; Shedd, William; Collett, Timothy S.; McConnell, Daniel R.

    2016-01-01

    As gas hydrate energy assessment matures worldwide, emphasis has evolved away from confirmation of the mere presence of gas hydrate to the more complex issue of prospecting for those specific accumulations that are viable resource targets. Gas hydrate exploration now integrates the unique pressure and temperature preconditions for gas hydrate occurrence with those concepts and practices that are the basis for conventional oil and gas exploration. We have aimed to assimilate the lessons learned to date in global gas hydrate exploration to outline a generalized prospecting approach as follows: (1) use existing well and geophysical data to delineate the gas hydrate stability zone (GHSZ), (2) identify and evaluate potential direct indications of hydrate occurrence through evaluation of interval of elevated acoustic velocity and/or seismic events of prospective amplitude and polarity, (3) mitigate geologic risk via regional seismic and stratigraphic facies analysis as well as seismic mapping of amplitude distribution along prospective horizons, and (4) mitigate further prospect risk through assessment of the evidence of gas presence and migration into the GHSZ. Although a wide range of occurrence types might ultimately become viable energy supply options, this approach, which has been tested in only a small number of locations worldwide, has directed prospect evaluation toward those sand-hosted, high-saturation occurrences that were presently considered to have the greatest future commercial potential.

  4. A prospective treatment for sepsis.

    PubMed

    Shahidi Bonjar, Mohammad Rashid; Shahidi Bonjar, Leyla

    2015-01-01

    The present paper proposes a prospective auxiliary treatment for sepsis. There exists no record in the published media on the subject. As an auxiliary therapy, efficacious extracorporeal removal of sepsis-causing bacterial antigens and their toxins (BATs) from the blood of septic patients is discussed. The principal component to this approach is a bacterial polyvalent antibody-column (BPVAC), which selectively traps wide spectrum of BATs from blood in an extracorporeal circuit, and detoxified blood returns back to the patient's body. BPVAC treatment would be a device of targeted medicine. Detoxification is performed under supervision of trained personnel using simple blood-circulating machines in which blood circulates from the patient to BPVAC and back to the patient aseptically. BPVACs' reactive sites consist of carbon nanotubes on which a vast spectra of polyvalent BATs-antibodies are bond to. The devise acts as a biological filter that selectively immobilizes harmful BATs from intoxicated blood; however, no dialysis is involved. For effective neutralization, BPVAC provides large contact surface area with blood. BPVAC approach would have advantages of: 1) urgent neutralization of notorious BATs from blood of septic patients; 2) applicability in parallel with conventional treatments; 3) potential to minimize side effects of the malady; 4) applicability for a vast range of BATs; 5) potential to eliminate contact of BATs with internal tissues and organs; 6) tolerability by patients sensitive to antiserum injections; 7) capability for universal application; 8) affectivity when antibiotic-resistant bacteria are involved and the physician has no or limited access to appropriate antibiotics; and 10) being a single-use, disposable, and stand-alone device. Before using it for clinical trials in human beings, it should pass animal evaluations accurately; however, research works should optimize its implementation in human beings. For optimization, it needs appropriate

  5. Prospective Optimization with Limited Resources.

    PubMed

    Snider, Joseph; Lee, Dongpyo; Poizner, Howard; Gepshtein, Sergei

    2015-09-01

    The future is uncertain because some forthcoming events are unpredictable and also because our ability to foresee the myriad consequences of our own actions is limited. Here we studied how humans select actions under such extrinsic and intrinsic uncertainty, in view of an exponentially expanding number of prospects on a branching multivalued visual stimulus. A triangular grid of disks of different sizes scrolled down a touchscreen at a variable speed. The larger disks represented larger rewards. The task was to maximize the cumulative reward by touching one disk at a time in a rapid sequence, forming an upward path across the grid, while every step along the path constrained the part of the grid accessible in the future. This task captured some of the complexity of natural behavior in the risky and dynamic world, where ongoing decisions alter the landscape of future rewards. By comparing human behavior with behavior of ideal actors, we identified the strategies used by humans in terms of how far into the future they looked (their "depth of computation") and how often they attempted to incorporate new information about the future rewards (their "recalculation period"). We found that, for a given task difficulty, humans traded off their depth of computation for the recalculation period. The form of this tradeoff was consistent with a complete, brute-force exploration of all possible paths up to a resource-limited finite depth. A step-by-step analysis of the human behavior revealed that participants took into account very fine distinctions between the future rewards and that they abstained from some simple heuristics in assessment of the alternative paths, such as seeking only the largest disks or avoiding the smaller disks. The participants preferred to reduce their depth of computation or increase the recalculation period rather than sacrifice the precision of computation. PMID:26367309

  6. Prospective Optimization with Limited Resources

    PubMed Central

    Snider, Joseph; Lee, Dongpyo; Poizner, Howard; Gepshtein, Sergei

    2015-01-01

    The future is uncertain because some forthcoming events are unpredictable and also because our ability to foresee the myriad consequences of our own actions is limited. Here we studied how humans select actions under such extrinsic and intrinsic uncertainty, in view of an exponentially expanding number of prospects on a branching multivalued visual stimulus. A triangular grid of disks of different sizes scrolled down a touchscreen at a variable speed. The larger disks represented larger rewards. The task was to maximize the cumulative reward by touching one disk at a time in a rapid sequence, forming an upward path across the grid, while every step along the path constrained the part of the grid accessible in the future. This task captured some of the complexity of natural behavior in the risky and dynamic world, where ongoing decisions alter the landscape of future rewards. By comparing human behavior with behavior of ideal actors, we identified the strategies used by humans in terms of how far into the future they looked (their “depth of computation”) and how often they attempted to incorporate new information about the future rewards (their “recalculation period”). We found that, for a given task difficulty, humans traded off their depth of computation for the recalculation period. The form of this tradeoff was consistent with a complete, brute-force exploration of all possible paths up to a resource-limited finite depth. A step-by-step analysis of the human behavior revealed that participants took into account very fine distinctions between the future rewards and that they abstained from some simple heuristics in assessment of the alternative paths, such as seeking only the largest disks or avoiding the smaller disks. The participants preferred to reduce their depth of computation or increase the recalculation period rather than sacrifice the precision of computation. PMID:26367309

  7. [Prospective evaluation of antidepressant discontinuation].

    PubMed

    Mourad, I; Lejoyeux, M; Adès, J

    1998-01-01

    The authors prospectively assessed symptoms induced by the interruption of antidepressants in 16 patients (11 women and 5 men), aged from 33 to 85 years (mean = 52.4 +/- 16.4), treated with antidepressants since at least two weeks. All patients were free of alcohol abuse or dependence disorder and of other dependence to psychoactive substances. None of them presented medical illness. Diagnosis were made by separate evaluations by two authors and confirmed with a semistructered assessment instrument: the Schedule for Affective Disorders and Schizophrenia (Lifetime Version). All patients were submitted to a brutal discontinuation of their antidepressant agent. Patients were assessed twice, before the interruption of the antidepressant, and 72 hours later. Effects of antidepressant interruption were assessed by several means. Modification of anxiety and depression were evaluated using the Montgomery Asberg Depression Rating Scale (MADRS) and the Hamilton Anxiety Scale. Symptoms of withdrawal were assessed with Cassano and al.'s scale SESSH including an evaluation of anxiety, agitation, irritability, anergy, difficulty on concentrating, depersonalization, sleep and appetite disorders, muscle pains, nausea, tremor, sweating, altered taste, hyperosmia, paresthesias, photophobia, motor incoordination, dizziness, hyperacousia pain, delirium. Fourteen of the 16 patients (87.5%) presented modifications of their somatic or psychic state 3 days after the interruption of the antidepressant treatment. Most frequent symptoms were: increase in anxiety (31%), increase in irritability (25%), sleep disorders (19%), decrease of anergia and fatigue (19%). Mean scores of anxiety and depression were not significantly modified by the withdrawal. Following TCAs interruption (7 patients) most frequent symptoms were sleep disorders; increase in anxiety, nausea. Among patients withdrawn from SSRIs (6 patients), most frequent symptoms were increase in anxiety, increase in irritability

  8. Prospective Coding by Spiking Neurons

    PubMed Central

    Brea, Johanni; Gaál, Alexisz Tamás; Senn, Walter

    2016-01-01

    Animals learn to make predictions, such as associating the sound of a bell with upcoming feeding or predicting a movement that a motor command is eliciting. How predictions are realized on the neuronal level and what plasticity rule underlies their learning is not well understood. Here we propose a biologically plausible synaptic plasticity rule to learn predictions on a single neuron level on a timescale of seconds. The learning rule allows a spiking two-compartment neuron to match its current firing rate to its own expected future discounted firing rate. For instance, if an originally neutral event is repeatedly followed by an event that elevates the firing rate of a neuron, the originally neutral event will eventually also elevate the neuron’s firing rate. The plasticity rule is a form of spike timing dependent plasticity in which a presynaptic spike followed by a postsynaptic spike leads to potentiation. Even if the plasticity window has a width of 20 milliseconds, associations on the time scale of seconds can be learned. We illustrate prospective coding with three examples: learning to predict a time varying input, learning to predict the next stimulus in a delayed paired-associate task and learning with a recurrent network to reproduce a temporally compressed version of a sequence. We discuss the potential role of the learning mechanism in classical trace conditioning. In the special case that the signal to be predicted encodes reward, the neuron learns to predict the discounted future reward and learning is closely related to the temporal difference learning algorithm TD(λ). PMID:27341100

  9. Case study data base companion report 3 to simulation of geothermal subsidence (LBL-10571)

    SciTech Connect

    Miller, I.; Dershowitz, W.; Jones, K.; Myer, L.; Roman, K.; Schauer, M.

    1980-03-01

    The data base developed for selection and evaluation of geothermal subsidence case studies is presented. Data from this data base were used in case studies of Wairakei, The Geysers, and Austin Bayou Prospect (Report LBL 10571).

  10. Prospective Ukrainian lunar orbiter mission

    NASA Astrophysics Data System (ADS)

    Shkuratov, Y.; Litvinenko, L.; Shulga, V.; Yatskiv, Y.; Kislyuk, V.

    Ukraine has launch vehicles that are able to deliver about 300 kg to the lunar orbit. Future Ukrainian lunar program may propose a polar orbiter. This orbiter should fill principal information gaps in our knowledge about the Moon after Clementine and Lunar Prospector missions and the future missions, like Smart-1, Lunar-A, and Selene. We consider that this can be provided by radar studies of the Moon with supporting optical polarimetric observations from lunar polar orbit. These experiments allow one to better understand global structure of the lunar surface in a wide range of scales, from microns to kilometers. We propose three instruments for the prospective lunar orbiter. They are: a synthetic aperture imaging radar (SAR), ground-penetrating radar (GPR), and imaging polarimeter (IP). The main purpose of SAR is to study with high resolution (50 m) the permanently shadowed sites in the lunar polar regions. These sites are cold traps for volatiles, and have a potential of resource utilization. Possible presence of water ice in the regolith in the sites makes them interesting for permanent manned bases on the Moon. Radar imaging and mapping of other interesting regions could be also planned. Multi-frequencies multi-polarization soun d ing of the lunar surface with GPR can provide information about internal structure of the lunar surface from meters to several hundred meters deep. GPR can be used for measuring the megaregolith layer properties, detection of cryptomaria, and studies of internal structure of the largest craters. IP will be a CCD camera with an additional suite of polarizers. Modest spatial resolution (100 m) should provide a total coverage or a large portion of the lunar surface in oblique viewing basically at large phase angles. Polarization degree at large (>90°) phase angles bears information about characteristic size of the regolith particles. Additional radiophysical experiments are considered with the use of the SAR system, e.g., bistatic radar

  11. Prospect for extreme field science

    NASA Astrophysics Data System (ADS)

    Tajima, T.

    2009-11-01

    The kind of laser extreme light infrastructure (ELI) provides will usher in a class of experiments we have only dreamed of for years. The characteristics that ELI brings in include: the highest intensity ever, large fluence, and relatively high repetition rate. A personal view of the author on the prospect of harnessing this unprecedented opportunity for advancing science of extreme fields is presented. The first characteristic of ELI, its intensity, will allow us to access, as many have stressed already, extreme fields that hover around the Schwinger field or at the very least the neighboring fields in which vacuum begins to behave as a nonlinear medium. In this sense, we are seriously probing the “material” property of vacuum and thus the property that theory of relativity itself described and will entail. We will probe both special theory and general theory of relativity in regimes that have been never tested so far. We may see a glimpse into the reach of relativity or even its breakdown in some extreme regimes. We will learn Einstein and may even go beyond Einstein, if our journey is led. Laser-driven acceleration both by the laser field itself and by the wakefield that is triggered in a plasma is huge. Energies, if not luminosity, we can access, may be unprecedented going far beyond TeV. The nice thing about ELI is that it has relatively high repetition rate and average fluence as compared with other extreme lasers. This high fluence can be a key element that leads to applications to high energy physics, such as gamma-gamma collider driver experiment, and some gamma ray experiments that may be relevant in the frontier of photo-nuclear physics, and atomic energy applications. Needless to say, high fluence is one of most important features that industrial and medical applications may need. If we are lucky, we may see a door opens at the frontier of novel physics that may not be available by any other means. Finally, as the last lecture of this workshop the

  12. Prospect theory in the valuation of health.

    PubMed

    Moffett, Maurice L; Suarez-Almazor, Maria E

    2005-08-01

    Prospect theory is the prominent nonexpected utility theory in the estimation of health state preference scores for quality-adjusted life year calculation. Until recently, the theory was not considered to be developed to the point of implementation in economic analysis. This review focuses on the research and evidence that tests the implementation of prospect theory into health state valuation. The typical application of expected utility theory assumes that a decision maker has stable preferences under conditions of risk and uncertainty. Under prospect theory, preferences are dependent on whether the decision maker regards the outcome of a choice as a gain or loss, relative to a reference point. The conceptual preference for standard gamble utilities in the valuation of health states has led to the development of elicitation techniques. Empirical evidence using these techniques indicates that when individual preferences are elicited, a prospect theory consistent framework appears to be necessary for adequate representation of individual health utilities. The relevance of prospect theory to policy making and resource allocation remains to be established. Societal preferences may not need the same attitudes towards risks as individual preferences, and may remain largely risk neutral. PMID:19807267

  13. Geochemical methods of prospecting for hydrocarbons

    SciTech Connect

    Duchscherer, W. Jr.

    1980-12-01

    Because the commonly used reflection-seismograph exploration technique misses many marginal low-relief structural prospects and regardless of its electronic computer sophistication, overlooks almost all stratigraphic traps, the hydrocarbon exploration industry should take a look at geochemical prospecting methods, which detect geochemical anomalies in the near-surface soils by measuring the thermal dissociation of the soil carbonates that are found overlying hydrocarbon accumulations. To promote understanding of such prospecting techniques, Geochemical Surveys reviews the methods used, the soil-alteration patterns, the lateral and vertical migration of hydrocarbon gases, the halo phenomenon (a ring or annual anomaly), the geochemical modification of sediments, and the data-interpretation and exploration procedures involved in a carbonate ..delta.. C analysis, which measures the residual, stable, cumulative effect of hydrocarbon migration.

  14. Prospect theory for online financial trading.

    PubMed

    Liu, Yang-Yu; Nacher, Jose C; Ochiai, Tomoshiro; Martino, Mauro; Altshuler, Yaniv

    2014-01-01

    Prospect theory is widely viewed as the best available descriptive model of how people evaluate risk in experimental settings. According to prospect theory, people are typically risk-averse with respect to gains and risk-seeking with respect to losses, known as the "reflection effect". People are much more sensitive to losses than to gains of the same magnitude, a phenomenon called "loss aversion". Despite of the fact that prospect theory has been well developed in behavioral economics at the theoretical level, there exist very few large-scale empirical studies and most of the previous studies have been undertaken with micro-panel data. Here we analyze over 28.5 million trades made by 81.3 thousand traders of an online financial trading community over 28 months, aiming to explore the large-scale empirical aspect of prospect theory. By analyzing and comparing the behavior of winning and losing trades and traders, we find clear evidence of the reflection effect and the loss aversion phenomenon, which are essential in prospect theory. This work hence demonstrates an unprecedented large-scale empirical evidence of prospect theory, which has immediate implication in financial trading, e.g., developing new trading strategies by minimizing the impact of the reflection effect and the loss aversion phenomenon. Moreover, we introduce three novel behavioral metrics to differentiate winning and losing traders based on their historical trading behavior. This offers us potential opportunities to augment online social trading where traders are allowed to watch and follow the trading activities of others, by predicting potential winners based on their historical trading behavior. PMID:25330203

  15. Prospect Theory for Online Financial Trading

    PubMed Central

    Martino, Mauro; Altshuler, Yaniv

    2014-01-01

    Prospect theory is widely viewed as the best available descriptive model of how people evaluate risk in experimental settings. According to prospect theory, people are typically risk-averse with respect to gains and risk-seeking with respect to losses, known as the “reflection effect”. People are much more sensitive to losses than to gains of the same magnitude, a phenomenon called “loss aversion”. Despite of the fact that prospect theory has been well developed in behavioral economics at the theoretical level, there exist very few large-scale empirical studies and most of the previous studies have been undertaken with micro-panel data. Here we analyze over 28.5 million trades made by 81.3 thousand traders of an online financial trading community over 28 months, aiming to explore the large-scale empirical aspect of prospect theory. By analyzing and comparing the behavior of winning and losing trades and traders, we find clear evidence of the reflection effect and the loss aversion phenomenon, which are essential in prospect theory. This work hence demonstrates an unprecedented large-scale empirical evidence of prospect theory, which has immediate implication in financial trading, e.g., developing new trading strategies by minimizing the impact of the reflection effect and the loss aversion phenomenon. Moreover, we introduce three novel behavioral metrics to differentiate winning and losing traders based on their historical trading behavior. This offers us potential opportunities to augment online social trading where traders are allowed to watch and follow the trading activities of others, by predicting potential winners based on their historical trading behavior. PMID:25330203

  16. 42 CFR 413.345 - Publication of Federal prospective payment rates.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... RENAL DISEASE SERVICES; OPTIONAL PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED NURSING FACILITIES Prospective Payment for Skilled Nursing Facilities § 413.345 Publication of Federal prospective payment...

  17. Problems and Prospects in Foreign Language Computing.

    ERIC Educational Resources Information Center

    Pusack, James P.

    The problems and prospects of the field of foreign language computing are profiled through a survey of typical implementation, development, and research projects that language teachers may undertake. Basic concepts in instructional design, hardware, and software are first clarified. Implementation projects involving courseware evaluation, textbook…

  18. A Prospective Analysis of Sexual Assault Perpetration

    ERIC Educational Resources Information Center

    Loh, Catherine; Gidycz, Christine; Lobo, Tracy; Luthra, Rohini

    2005-01-01

    This study prospectively evaluated perpetrator risk factors for sexual assault perpetration, including peer influences, beliefs and attitudes about sexuality, alcohol use, and token resistance. Perpetration of sexual assault was evaluated at three time periods: pretest, 3-month follow-up, and 7-month follow-up. Retrospective and prospective…

  19. How Well Do Prospective Teachers Speak?

    ERIC Educational Resources Information Center

    Snyder, Sandra L.

    As part of a study of basic skills of secondary education students, a study was conducted at Pennsylvania State University of the speaking ability of 43 prospective secondary level teachers. A rating instrument was developed based on a list of criteria considered important to teachers by speech communication experts and teacher educators alike.…

  20. Continuing Bonds and Grief: A Prospective Analysis

    ERIC Educational Resources Information Center

    Boelen, Paul A.; Stroebe, Margaret S.; Schut, Henk A. W.; Zijerveld, Annemieke M.

    2006-01-01

    Using data of 56 bereaved individuals, this study examined associations of various manifestations of continuing bonds, assessed at 7-12 months post-loss, with concurrent and prospective (9 months later) symptoms of grief and depression. Among other things it was found that, independent of initial symptom levels, manifestations of continuing bonds…

  1. Testing general relativity: Progress, problems, and prospects

    NASA Technical Reports Server (NTRS)

    Shapiro, I. I.

    1971-01-01

    The results from ground-based experimental testing are presented. Prospects for improving these experiments are discussed. Radar echo time delays, perihelion advance and solar oblateness, time variation of the gravitational constant, and radio wave deflection are considered. Ground-based and spacecraft techniques are compared on an accuracy vs. cost basis.

  2. Labelling of Students by Prospective Teachers.

    ERIC Educational Resources Information Center

    Frerichs, Allen H.; Adelman, Stan I.

    The basic purpose of this study was to determine the effects of telling prospective teachers that a classroom of adolescents, viewed on video tape, were low-achieving students. An experimental group was informed that the adolescents were slow learners having considerable difficulty in school. A control group, observing the same video tape was told…

  3. Carbohydrate drugs: current status and development prospect.

    PubMed

    Zhang, Yan; Wang, Fengshan

    2015-04-01

    In recent years, there has been a great effort devoted to the investigation of the roles of carbohydrates in various essential biological processes and the development of carbohydrates to therapeutic drugs. This review summarizes the carbohydrate drugs which have been recorded in several pharmacopoeias, marketed, and under development. A prospect of the future development of carbohydrate drugs is discussed as well. PMID:25994058

  4. Prospective Governance. AGB Occasional Paper No. 31.

    ERIC Educational Resources Information Center

    Greer, Darryl G.

    1997-01-01

    Higher education governance structures are ineffective and new structures of "prospective governance" are needed for future success. Trends affecting higher education include financial scarcity, lack of government funding juxtaposed with the growing public demand for better services, and the competitive pressures of commercialization and…

  5. The Swedish Family: Problems, Programs and Prospects.

    ERIC Educational Resources Information Center

    Lindblom, Paul

    1986-01-01

    To clarify issues in the controversy in Sweden concerning the means and ends of family policy, this article analyzes the economic plight of Swedish families with children, elucidates the views of parents and politicians, discusses the changing role and status of women, and considers prospects for the future. Also discussed are work equality and…

  6. CDF Status and B Physics Prospects

    SciTech Connect

    J. Stephen Miller

    2002-10-07

    With extensive upgrades to the detector and electronics, CDF has started collecting data with Run II of the Tevatron. The enhanced silicon coverage and the use of silicon based tracks in the trigger, make CDF well suited for a broad program of B hadron measurements. We present the current status of the experiment and prospects for measurements in Run II.

  7. School Funding Prospects for the States.

    ERIC Educational Resources Information Center

    Sherman, Joel D.; And Others

    1983-01-01

    Discusses factors affecting both school funding demand (including demographic changes and student needs) and the supply of educational funds (such as fiscal capacity and effort, state and local expenditures, and federal aid). Classifies states with favorable, average, and unfavorable funding prospects, based on state rankings for each factor. (RW)

  8. Existing and prospective blast-furnace conditions

    SciTech Connect

    I.G. Tovarovskii; V.I. Bol'shakov; V.P. Lyalyuk; A.E. Merkulov; D. V. Pinchuk

    2009-07-15

    Blast-furnace conditions are investigated by means of a multizone model. The expected performance of prospective technologies is assessed, as well as the trends in blast-furnace processes. The model permits the identification of means of overcoming practical difficulties.

  9. School Food Practices of Prospective Teachers

    ERIC Educational Resources Information Center

    Rossiter, Melissa; Glanville, Theresa; Taylor, Jennifer; Blum, Ilya

    2007-01-01

    Background: Schoolteachers can affect students' eating habits in several ways: through nutrition knowledge, positive role modeling, and avoidance of unhealthy classroom food practices. In this study, the knowledge, attitudes, and eating behaviors of prospective teachers as determinants of intended classroom food practices and the school…

  10. Status and Prospects for Hadron Production Experiments

    SciTech Connect

    Schroeter, Raphaeel

    2010-03-30

    The latest results from the HARP, MIPP and NA61 Hadron Production Experiments are reviewed and their implications for neutrinos physics experiments are discussed. We emphasize three neutrino sources: accelerator-based neutrino beams, advanced neutrino sources and atmospheric neutrinos. Finally, prospects from additional forthcoming hadron production measurements are presented.

  11. Professional Leadership Aspirations of Prospective Women Teachers

    ERIC Educational Resources Information Center

    McMillin, Marvin R.

    1972-01-01

    Results of the study seem to suggest that prospective women teachers are less likely to accept a leadership role as the level of responsibility increases and after an interruption in their career. They are also less likely to accept leadership roles in professional organizations. (Author/BY)

  12. Prospective Elementary School Teachers' Proportional Reasoning

    ERIC Educational Resources Information Center

    Valverde, Gabriela; Castro, Encarnación

    2012-01-01

    We present the findings of a study on prospective elementary teachers' proportional reasoning. After describing some of the teachers' performance in solving multiplicative structure problems that involve ratios and relations of direct proportionality between quantities, we were able to establish classifications of their answers according to…

  13. Aging: Prospects and Issues. Revised. 1976.

    ERIC Educational Resources Information Center

    Davis, Richard H., Ed.

    Completely revised and updated since its first edition in 1973, the book explores an even wider range of concerns regarding gerontology. Part 1 presents an overview of the multiple aspects of gerontology, and includes the following chapters: (1) Aging: Prospects and Issues, Richard H. Davis; (2) Aging: The Psychologist's Perspective, James E.…

  14. Prospective Elementary Teachers' Conceptual Understanding of Integers

    ERIC Educational Resources Information Center

    Reeder, Stacy; Bateiha, Summer

    2016-01-01

    This investigation examined the degree to which prospective elementary teachers had developed a meaningful and conceptual understanding of what integers are and explored their development of models for multiplication with integers that are related to everyday activities. Additionally, this study explored how these understandings informed…

  15. Teacher Education: Its Problems and Some Prospects

    ERIC Educational Resources Information Center

    Sykes, Gary; Bird, Tom; Kennedy, Mary

    2010-01-01

    Based on an analysis of occupational competence in teaching and teacher education, this article draws together a set of dilemmas that face the field, arguing that an occupational analysis is needed to complement the more common institutional analysis of teacher education. Then, this analysis is used to evaluate the prospects of the reforms that…

  16. Prospects in Computer Assisted Language Lessons.

    ERIC Educational Resources Information Center

    Jamieson, Joan; Chapelle, Carol

    Some prospects for development of computer-assisted language instruction in six language skill areas (grammar, communication, reading, listening, speaking, and writing) are presented. In grammar instruction, a current challenge is to improve judging of student answers, and "intelligent" computer programs that try to identify the student's…

  17. Secondary Education Reform: Retrospect and Prospect.

    ERIC Educational Resources Information Center

    Passow, A. Harry

    In these lectures the author examines current criticisms of secondary education in light of the history of secondary education reform and then discusses future prospects for reform as they relate to the place of secondary education in modern American society. The author begins by presenting a retrospective analysis of a number of studies and…

  18. Prospects of Private Education in China

    ERIC Educational Resources Information Center

    Hua, Wu

    2009-01-01

    Private education contributes a great deal to education in China, but people are confused about the prospects of teacher development, tax problems, property rights problems, remunerations, and so forth. Legal provisions stipulate that private education and public education have the same legal status and rights, but there is still a long way to go…

  19. Prospective Teachers' View on Geography Fieldworks

    ERIC Educational Resources Information Center

    Yilmaz, Cevdet; Bilgi, Merve Gorkem

    2011-01-01

    The purposes of the study are to examine thoroughly the components to constitute individual perceptions of prospective teachers concerning important acquisitions of geography fieldworks and to facilitate its applicability as a teaching method through their own observations and suggestions, and in this context to obtain information about the nature…

  20. Prospective associations between loneliness and emotional intelligence.

    PubMed

    Wols, A; Scholte, R H J; Qualter, P

    2015-02-01

    Loneliness has been linked cross-sectionally to emotional skill deficits (e.g., Zysberg, 2012), but missing from the literature is a longitudinal examination of these relationships. The present study fills that gap by examining the prospective relationships between loneliness and emotional functioning in young adolescents in England. One hundred and ninety-six adolescents aged 11-13 years (90 females) took part in the study and completed the youth version of the Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT-YV) and the peer-related subscale of the Loneliness and Aloneness Scale for Children and Adolescents (LACA) at two time points, which were 10 months apart. Prospective associations were obtained for male and female adolescents separately using cross-lagged statistical techniques. Our results showed prospective links between understanding and managing emotions and loneliness for both females and males. Perceiving and using emotions were prospectively linked to loneliness in males only. Possible explanations and directions for future research are discussed. PMID:25576768

  1. Flower Power: Prospects for Photosynthetic Energy

    ERIC Educational Resources Information Center

    Poole, Alan D.; Williams, Robert H.

    1976-01-01

    This report focuses on the prospects and possibilities for using biomass as an energy source for the United States. However, the greatest potential for utilizing biomass as fuel exists in energy-starved developing nations, since it appears possible to develop biomass technologies keeping capital inputs low in relation to labor inputs. (BT)

  2. Lone Tree prospect area, Railroad Valley, Nevada

    SciTech Connect

    Montgomery, S.L.

    1997-02-01

    Continued exploration in the Basin and Range of Nevada has resulted in a number of small field discoveries that confirm widespread oil generation and suggest potential in local prospect settings. One such setting, the Lone Tree prospect area, lies approximately 6.5 mi (10.4 km) southwest of Grant Canyon field in Railroad Valley. Discovered in 1983, this field had produced nearly 20 million bbl of oil by June 1996, mostly from two wells. Oil is entrapped in a slide block of fractured Paleozoic strata juxtaposed against Mississippian source rocks along a detachment fault of probable early Tertiary age. Subsequent exploration has focused on attempts to identify such blocks elsewhere in east-central Nevada, particularly in Railroad and Pine Valleys. Well, gravity, and two-dimensional seismic data suggested the existence of such a block in the Lone Tree area. These data were used as a basis for a three-dimensional seismic survey. Information from this survey identified a prospect at the structural culmination of the interpreted block. The resulting well, the 13-14 Timber Mountain, was commercially unsuccessful but yielded important new data, suggesting a need to revise existing stratigraphy and structural history. In addition, a second prospect, located farther updip, was indicated.

  3. Perceptions of Prospective Entrants to Teacher Education

    ERIC Educational Resources Information Center

    Taylor, Alexis

    2006-01-01

    The findings of a small-scale study concerning entry into teacher education are presented. Data were collected over four years by questionnaires completed by a total of 140 participants attending Teaching Taster Courses run annually by Brunel University from 1999 to 2002 for prospective students in secondary shortage subjects. The study took place…

  4. Attitude level of prospective science teachers towards assessment

    NASA Astrophysics Data System (ADS)

    Efendi, Ridwan; Rustaman, Nuryani Y.

    2016-02-01

    A descriptive study about attitude level of prospective science teachers towards assessment was conducted with the involvement of 67 prospective science teachers from four state universities in western part of the Indonesian region and middle part of Indonesia region. Data collected by using the questionnaire consisted of four aspects, id est. prospective science teachers attitude towards assessment (cognitive level of assessment, type of assessment, and criterion of evaluation), prospective science teachers instructional practice, internal difficulties that prospective science teachers experienced related to their assessment skills, and the use of assessment process of prospective science teachers. Determination of attitude level detected from prospective science teachers was carried out in descriptive statistics, in the form of respondent average values. Research finding shows that attitude level of prospective science teachers towards assessment can be categorized as "close to constructivist".

  5. External Retrieval Cues Facilitate Prospective Remembering in Children.

    ERIC Educational Resources Information Center

    Meacham, John A.; Colombo, John A.

    1980-01-01

    Young children exhibit improved prospective memory when an external cue is used as a reminder. Children's attempts at prospective remembering may be an important precursor to the development of strategies for retrospective remembering. (JD)

  6. 43 CFR 3815.2 - Prospecting and mining.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 2 2011-10-01 2011-10-01 false Prospecting and mining. 3815.2 Section... Mineral Locations in Stock Driveway Withdrawals § 3815.2 Prospecting and mining. All prospecting and mining operations shall be conducted in such manner as to cause no interference with the use of...

  7. 50 CFR 27.64 - Prospecting and mining.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 50 Wildlife and Fisheries 9 2014-10-01 2014-10-01 false Prospecting and mining. 27.64 Section 27.64 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR... Property § 27.64 Prospecting and mining. Prospecting, locating, or filing mining claims on...

  8. 43 CFR 3815.2 - Prospecting and mining.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 43 Public Lands: Interior 2 2012-10-01 2012-10-01 false Prospecting and mining. 3815.2 Section... Mineral Locations in Stock Driveway Withdrawals § 3815.2 Prospecting and mining. All prospecting and mining operations shall be conducted in such manner as to cause no interference with the use of...

  9. 50 CFR 27.64 - Prospecting and mining.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 50 Wildlife and Fisheries 8 2011-10-01 2011-10-01 false Prospecting and mining. 27.64 Section 27.64 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR... Property § 27.64 Prospecting and mining. Prospecting, locating, or filing mining claims on...

  10. 43 CFR 3815.2 - Prospecting and mining.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 2 2014-10-01 2014-10-01 false Prospecting and mining. 3815.2 Section... Mineral Locations in Stock Driveway Withdrawals § 3815.2 Prospecting and mining. All prospecting and mining operations shall be conducted in such manner as to cause no interference with the use of...

  11. 50 CFR 27.64 - Prospecting and mining.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 50 Wildlife and Fisheries 6 2010-10-01 2010-10-01 false Prospecting and mining. 27.64 Section 27.64 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR... Property § 27.64 Prospecting and mining. Prospecting, locating, or filing mining claims on...

  12. 50 CFR 27.64 - Prospecting and mining.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 9 2013-10-01 2013-10-01 false Prospecting and mining. 27.64 Section 27.64 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR... Property § 27.64 Prospecting and mining. Prospecting, locating, or filing mining claims on...

  13. 43 CFR 3815.2 - Prospecting and mining.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 43 Public Lands: Interior 2 2013-10-01 2013-10-01 false Prospecting and mining. 3815.2 Section... Mineral Locations in Stock Driveway Withdrawals § 3815.2 Prospecting and mining. All prospecting and mining operations shall be conducted in such manner as to cause no interference with the use of...

  14. 50 CFR 27.64 - Prospecting and mining.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 50 Wildlife and Fisheries 9 2012-10-01 2012-10-01 false Prospecting and mining. 27.64 Section 27.64 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR... Property § 27.64 Prospecting and mining. Prospecting, locating, or filing mining claims on...

  15. Turkish Prospective Chemistry Teachers' Beliefs about Chemistry Teaching

    ERIC Educational Resources Information Center

    Boz, Yezdan; Uzuntiryaki, Esen

    2006-01-01

    In order to study the beliefs of Turkish prospective chemistry teachers about teaching chemistry, semi-structured interviews were conducted with 12 prospective teachers. Analysis of the interviews revealed that most of the prospective teachers held intermediate (transition between constructivist and traditional) beliefs about chemistry teaching.…

  16. 42 CFR 412.340 - Fully prospective payment methodology.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 2 2011-10-01 2011-10-01 false Fully prospective payment methodology. 412.340...-Related Costs § 412.340 Fully prospective payment methodology. A hospital paid under the fully prospective payment methodology receives a payment per discharge based on a proportion of the hospital-specific...

  17. Turkish Prospective Teachers' Understanding and Misunderstanding on Global Warming

    ERIC Educational Resources Information Center

    Ocal, A.; Kisoglu, M.; Alas, A.; Gurbuz, H.

    2011-01-01

    The key objective of this study is to determine the Turkish elementary prospective teachers' opinions on global warming. It is also aimed to establish prospective teachers' views about the environmental education in Turkish universities. A true-false type scale was administered to 564 prospective teachers from science education, social studies…

  18. Prospective Memory in a Language-Trained Chimpanzee ("Pan Troglodytes")

    ERIC Educational Resources Information Center

    Beran, Michael J.; Perdue, Bonnie M.; Bramlett, Jessica L.; Menzel, Charles R.; Evans, Theodore A.

    2012-01-01

    Prospective memory involves the encoding, retention, and implementation of an intended future action. Although humans show many forms of prospective memory, less is known about the future oriented processes of nonhuman animals, or their ability to use prospective memory. In this experiment, a chimpanzee named Panzee, who had learned to associate…

  19. 48 CFR 814.203-1 - Transmittal to prospective bidders.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Transmittal to prospective... prospective bidders. The contracting officer should include either a bid envelope or OF 17, Sealed Bid Label, with each invitation for bids furnished by mail or hand delivered to prospective bidders....

  20. 48 CFR 14.203-1 - Transmittal to prospective bidders.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Transmittal to prospective... CONTRACTING METHODS AND CONTRACT TYPES SEALED BIDDING Solicitation of Bids 14.203-1 Transmittal to prospective... contracting office is located in the United States, any solicitation sent to a prospective bidder...

  1. 48 CFR 53.209-1 - Responsible prospective contractors.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Responsible prospective... (CONTINUED) CLAUSES AND FORMS FORMS Prescription of Forms 53.209-1 Responsible prospective contractors. (a) SF 1403 (Rev. 9/88), Preaward Survey of Prospective Contractor (General). SF 1403 is authorized...

  2. 47 CFR 76.960 - Prospective rate reductions.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Prospective rate reductions. 76.960 Section 76... MULTICHANNEL VIDEO AND CABLE TELEVISION SERVICE Cable Rate Regulation § 76.960 Prospective rate reductions... Commission may order the cable operator to implement a prospective rate reduction to the class of...

  3. 48 CFR 514.203-1 - Transmittal to prospective bidders.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Transmittal to prospective bidders. 514.203-1 Section 514.203-1 Federal Acquisition Regulations System GENERAL SERVICES... to prospective bidders. Prospective bidders, as used in FAR 14.203-1, include both the following:...

  4. Turkish Prospective Chemistry Teachers' Alternative Conceptions about Acids and Bases

    ERIC Educational Resources Information Center

    Boz, Yezdan

    2009-01-01

    The purpose of this study was to obtain prospective chemistry teachers' conceptions about acids and bases concepts. Thirty-eight prospective chemistry teachers were the participants. Data were collected by means of an open-ended questionnaire and semi-structured interviews. Analysis of data indicated that most prospective teachers did not have…

  5. A Multinomial Model of Event-Based Prospective Memory

    ERIC Educational Resources Information Center

    Smith, Rebekah E.; Bayen, Ute J.

    2004-01-01

    Prospective memory is remembering to perform an action in the future. The authors introduce the 1st formal model of event-based prospective memory, namely, a multinomial model that includes 2 separate parameters related to prospective memory processes. The 1st measures preparatory attentional processes, and the 2nd measures retrospective memory…

  6. Predictors of Time-Based Prospective Memory in Children

    ERIC Educational Resources Information Center

    Mackinlay, Rachael J.; Kliegel, Matthias; Mantyla, Timo

    2009-01-01

    This study identified age differences in time-based prospective memory performance in school-aged children and explored possible cognitive correlates of age-related performance. A total of 56 7- to 12-year-olds performed a prospective memory task in which prospective memory accuracy, ongoing task performance, and time monitoring were assessed.…

  7. 25 CFR 214.29 - Prospecting; abandonment of mines.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Prospecting; abandonment of mines. 214.29 Section 214.29... RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.29 Prospecting; abandonment of mines. All prospecting or mining operations or the abandonment of a well or mine shall be subject to the approval of...

  8. 25 CFR 214.29 - Prospecting; abandonment of mines.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true Prospecting; abandonment of mines. 214.29 Section 214.29... RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.29 Prospecting; abandonment of mines. All prospecting or mining operations or the abandonment of a well or mine shall be subject to the approval of...

  9. 25 CFR 214.29 - Prospecting; abandonment of mines.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Prospecting; abandonment of mines. 214.29 Section 214.29... RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.29 Prospecting; abandonment of mines. All prospecting or mining operations or the abandonment of a well or mine shall be subject to the approval of...

  10. 25 CFR 214.29 - Prospecting; abandonment of mines.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false Prospecting; abandonment of mines. 214.29 Section 214.29... RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.29 Prospecting; abandonment of mines. All prospecting or mining operations or the abandonment of a well or mine shall be subject to the approval of...

  11. 25 CFR 214.29 - Prospecting; abandonment of mines.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false Prospecting; abandonment of mines. 214.29 Section 214.29... RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.29 Prospecting; abandonment of mines. All prospecting or mining operations or the abandonment of a well or mine shall be subject to the approval of...

  12. Apathy and Prospective Memory in Aging

    PubMed Central

    Esposito, Fabienne; Rochat, Lucien; Juillerat Van der Linden, Anne-Claude; Van der Linden, Martial

    2012-01-01

    Background Apathy is common in aging, but the processes underlying its different components are still unclear. The aim of this study was to examine the relationships between apathy and prospective memory (PM), a process involved in the execution of delayed intentions. Methods Fifty elderly participants completed a PM task and a working memory task. Close relatives of the participants were given the Apathy Inventory, which assesses three dimensions of apathy (lack of initiative, lack of interest, emotional blunting), and a negative mood scale. Results Correlation analyses showed strong relationships between PM and lack of initiative and interest. These relations remain significant even after controlling for global cognitive functioning, working memory, processing speed and negative mood. Conclusion This study sheds new light on the cognitive mechanisms associated with apathy in aging and opens up interesting prospects for psychological intervention. PMID:23277780

  13. Prospective approach to managing antimicrobial drug shortages.

    PubMed

    Griffith, Milena M; Patel, Jean A; Sutton, Sarah H; Bolon, Maureen K; Esterly, John S; Gross, Alan E; Postelnick, Michael J; Zembower, Teresa R; Scheetz, Marc H

    2012-07-01

    Antimicrobial drug shortages continue to increase, with few new therapeutic options available. Nationally, proposals have been offered to alleviate drug shortages; however, these recommendations are unlikely to effect change in the near future. Thus, antimicrobial stewardship leaders in acute care hospitals must develop a prospective management strategy to lessen the impact of these shortages on patient care. Herein, we describe several resources available to aid professionals in antimicrobial stewardship and healthcare epidemiology to manage drug shortages. An effective approach should include prospectively tracking shortages and maximizing inventory by appropriately managing usage. Several tenets should underpin this management. Alternative agents should be rationally chosen before the inventory of the primary agent has reached zero, ethical considerations should be taken into account, and timely notification and communication with key stakeholders should occur throughout the prescribing and dispensing process. PMID:22669238

  14. Prospects and expectations for unstructured methods

    NASA Technical Reports Server (NTRS)

    Baker, Timothy J.

    1995-01-01

    The last decade has witnessed a vigorous and sustained research effort on unstructured methods for computational fluid dynamics. Unstructured mesh generators and flow solvers have evolved to the point where they are now in use for design purposes throughout the aerospace industry. In this paper we survey the various mesh types, structured as well as unstructured, and examine their relative strengths and weaknesses. We argue that unstructured methodology does offer the best prospect for the next generation of computational fluid dynamics algorithms.

  15. Monograph on prospective developments in oceanology

    NASA Technical Reports Server (NTRS)

    Monin, A. S.

    1986-01-01

    Excerpts from a chapter of a monograph, Oceanology in the Year 2000, which has been prepared for publication at the USSR Academy of Sciences' Institute of Oceanology, is presented. The author of this chapter is A. S. Morin, corresponding member of the USSR Academy of Sciences and director of the oceanology institute. The monograph is said to be the collective work of a group of specialists. Monin views prospective developments of oceanology and oceanology related research and development, technology and expedition research.

  16. Video recording technology and its prospects

    NASA Astrophysics Data System (ADS)

    Oshima, Hideo

    1994-06-01

    The progress of broadcasting digitization technologies has produced digital VTRs for field use which are quickly replacing the conventional analog versions. In parallel with these developments, advanced high-density recording and image-data compression technologies have created the possibility for home VTRs to be digitized as well so that they may even be able to record/play back Hi-Vision programs. This paper discusses the current status and future prospects of video recording technology centering on digital VTRs.

  17. The East Flanders Prospective Twin Survey (EFPTS).

    PubMed

    Derom, Catherine A; Vlietinck, Robert F; Thiery, Evert W; Leroy, Fernand O G; Fryns, Jean-Pierre; Derom, Robert M

    2006-12-01

    The East Flanders Prospective Twin Survey (EFPTS) is a prospective, population-based registry of multiple births in the province of East Flanders, Belgium. EFPTS has several unique features: it is population based and prospective, with the possibility of long-term follow-up; the twins (and higher order multiple births) are ascertained at birth; basic perinatal data recorded; chorion type and zygosity established; and since 1969 placental biopsies have been taken and frozen at -20 degrees C for later determination of genetic markers. The EFPTS is the only large register that includes placental data and allows differentiation of 3 subtypes of monozygotic (MZ) twins based on the time of the initial zygotic division: the dichorionic-diamnionic pairs (early, before the 4th day after fertilization), the monochorionic-diamnionic pairs (intermediate, between the 4th and the 7th day post fertilization), and the monochorionic-monoamnionic pairs (late, after the 8-day post fertilization). This added a new dimension to didymology (the science of twins; didymos is the Greek word for twin): the timing of MZ twinning. Studies can be initiated taking into account primary biases, those originating in utero. Such studies could throw new light on the controversy over the validity of the classic twin method, the consequences of early embryological events (before and just after implantation of the embryo), the origin of congenital malformations, the sex proportion of multiples, the gene-environment interactions as far as intrauterine environment is concerned, to name but a few. PMID:17254399

  18. Magnetometry and archaeological prospection in Mexico

    NASA Astrophysics Data System (ADS)

    Barba Pingarron, L.; Laboratorio de Prospeccion Arqueologica

    2013-05-01

    Luis Barba Laboratorio de Prospección Arqueológica Instituto de Investigaciones Antropológicas Universidad Nacional Autonoma de México The first magnetic survey in archaeological prospection was published in 1958 in the first number of Archaeometry, in Oxford. That article marked the beginning of this applications to archaeology. After that, magnetic field measurements have become one of the most important and popular prospection tools. Its most outstanding characteristic is the speed of survey that allows to cover large areas in short time. As a consequence, it is usually the first approach to study a buried archaeological site. The first attempts in Mexico were carried out in 196. Castillo and Urrutia, among other geophysical techniques, used a magnetometer to study the northern part of the main plaza, zocalo, in Mexico City to locate some stone Aztec sculptures. About the same time Morrison et al. in La Venta pyramid used a magnetometer to measure total magnetic field trying to find a substructure. Some years later Brainer and Coe made a magnetic survey to locate large stone Olmec heads in San Lorenzo Tenochtitlan, Veracruz. Technology development has provided everyday more portable and accurate instruments to measure the magnetic field. The first total magnetic field proton magnetometers were followed by differential magnetometers and more recently gradiometers. Presently, multiple sensor magnetometers are widely used in European archaeology. The trend has been to remove the environmental and modern interference and to make more sensitive the instruments to the superficial anomalies related to most of the archaeological sites. There is a close relationship between the geology of the region and the way magnetometry works in archaeological sites. Archaeological prospection in Europe usually needs very sensitive instruments to detect slight magnetic contrast of ditches in old sediments. In contrast, volcanic conditions in Mexico produce large magnetic contrast

  19. [Age-prospective memory-paradox: explanatory hypotheses].

    PubMed

    Azzopardi, Barbara; Auffray, Caroline; Juhel, Jacques

    2015-03-01

    Prospective memory is a complex cognitive function requiring to remember a planned action. For example, this function is particularly important for elderly people to remember taking medication at the appropriate time. The comparison of the performance of old and young peoples on different prospective memory tasks led to two contradictory results, a configuration that has been dubbed "age-prospective memory-paradox". The first set of results of the age-prospective memory-paradox configuration is in keeping with the effects of aging on cognitive functioning, older peoples generally performing less well than younger peoples on laboratory prospective memory tasks. The second set of results is at odds with the first one, as older peoples generally perform better than younger peoples on naturalistic prospective memory tasks. The aim of the present paper is to expose the main explanatory hypotheses of the age related deficit on laboratory prospective memory tasks in one hand and on the age related benefit on naturalistic prospective memory tasks on the other hand. Concerning laboratory prospective memory tasks, the main hypothesis is that the detrimental effect of age would be principally due to negative influence of age on executive control processes and retrospective memory processes involved in this kind of tasks. With respect to naturalistic prospective memory tasks, a higher motivational level and the fact that older people have more frequently recourse to external memory aids and to compensation strategies could explain the better results of older people. PMID:25786425

  20. A new method for prospect appraisal

    SciTech Connect

    Chen, H.C.; Fang, J.H. )

    1993-01-01

    A new methodology is presented for aggregating individual and fragmentary pieces of geologic information to assess the outcomes of prospect evaluation. The new method is based on possibility, rather than probability theory, and is coupled with multiple-criteria decision-making theory. In essence, the method employs fuzzy implications to gauge satisfaction levels associated with each measure of the characteristics associated with the source, reservoir, seal, and trap. The method is suitable where some data are missing, vague, or subjective. Thus, it is an alternative approach, not a substitute for conventional methods based on probability theory. 16 refs., 7 figs., 4 tabs.

  1. LHCb Physics and 2010-11 prospects

    NASA Astrophysics Data System (ADS)

    Perazzini, Stefano

    2011-10-01

    LHCb is one of the four major experiments operating at the Large Hadron Collider, and is specifically dedicated to the measurement of CP-violation and rare decays in the beauty and charm quark sectors. By employing data from early LHC runs it is possible to assess the performance of the detector and to better understand the potential of the LHCb flavour programme. After a brief introduction of the motivations and of the relevant physics goals, the prospects about key CP-violation and rare decay measurements will be presented. Emphasis will be given to those topics where results with particular sensitivity to New Physics are expected during the 2010-11 run.

  2. CDF - Run II Status and Prospects

    SciTech Connect

    Manfred Paulini

    2003-03-17

    After a five year upgrade period, the CDF detector located at the Fermilab Tevatron Collider is back in operation taking high quality data with all subsystems functional. We report on the status of the CDF experiment in Run II and discuss the start-up of the Tevatron accelerator. First physics results from CDF are presented. We also discuss the prospects for B physics in RunII, in particular the measurements of B{sub S}{sup 0} flavour oscillations and CP violation in B decays.

  3. Recent advances and future prospects in choroideremia

    PubMed Central

    Zinkernagel, Martin S; MacLaren, Robert E

    2015-01-01

    Choroideremia is a complex and rare disease that is frequently misdiagnosed due to its similar appearance to classic retinitis pigmentosa. Recent advances in genetic testing have identified specific genetic mutations in many retinal dystrophies, and the identification of the mutation of the CHM gene on the X chromosome 25 years ago has paved the way for gene replacement therapy with the first human trials now underway. This article reviews the epidemiological and pathological features of choroideremia and new prospects in imaging to monitor disease progression, as well as potential treatment approaches for choroideremia. PMID:26648685

  4. The Telescope Array experiment: status and prospects

    NASA Astrophysics Data System (ADS)

    Tokuno, H.; Abbasi, R. U.; Abu-Zayyad, T.; Azuma, R.; Belz, J. W.; Benno, T.; Bergman, D. R.; Blake, S. A.; Brusova, O.; Cady, R.; Cao, Z.; Cheon, B. G.; Chiba, J.; Chikawa, M.; Cho, I. S.; Chung, T.; Cohen, F.; Doura, K.; Doyle, T.; Endo, A.; Fujii, H.; Fukuda, T.; Fukushima, M.; Hayashi, Y.; Hayashi, K.; Hayashida, N.; Hibino, K.; Hiyama, K.; Honda, K.; Huentemeyer, P.; Hughes, G. A.; Iguchi, T.; Ikeda, D.; Ikuta, K.; Inoue, N.; Ishii, T.; Jui, C. C. H.; Kadota, K.; Kakimoto, F.; Kanbe, T.; Kasahara, K.; Kawai, H.; Kawakami, S.; Kawana, S.; Kido, E.; Kondo, Y.; Kwon, Y. J.; Machida, S.; Martens, K.; Matsuda, T.; Matsuyama, T.; Matthews, J. A. J.; Matthews, J. N.; Minamino, M.; Miyata, K.; Mostafa, M.; Murano, Y.; Nakamura, T.; Nam, S.; Nonaka, T.; Ogio, S.; Oh, S.; Ohnishi, M.; Ohoka, H.; Ohshima, A.; Okuda, T.; Ormes, J.; Ozawa, S.; Park, I. H.; Park, J. H.; Rodriguez, D.; Sagawa, H.; Sakurai, N.; Scott, L. M.; Shibata, T.; Shimizu, N.; Shimodaira, H.; Sinnis, G.; Smith, J. D.; Sokolsky, P.; Springer, R. W.; Stratton, S. R.; Suzuki, S.; Takeda, M.; Taketa, A.; Takita, M.; Tameda, Y.; Tanaka, K.; Tanaka, M.; Tanaka, H.; Taylor, M. J.; Teshima, M.; Thomas, J. R.; Thomas, S. B.; Thomson, G. B.; Tomida, T.; Torii, R.; Tsunesada, Y.; Uchihori, Y.; Udo, S.; Unno, Y.; Wada, Y.; Wickwar, V. B.; Wiencke, L. R.; Wilkerson, T. D.; Yamakawa, Y.; Yamaoka, H.; Yang, J.; Yoshida, S.; Yoshii, H.; Yun, Y. H.

    2008-07-01

    Telescope Array (TA) is a hybrid detector of a surface detector array and fluorescence telescopes. This hybrid detector will measure the energy spectrum, anisotropy and composition of ultra-high energy cosmic rays (UHECRs) to identify their origin. The almost construction of the detector has been completed in May 2007, and the detector is running under test and adjustments. The first hybrid observation with the full configuration is planned in beginning of 2008. In this paper the status and prospects of TA detector is described.

  5. Therapeutic Genome Editing: Prospects and Challenges

    PubMed Central

    Cox, David Benjamin Turitz; Platt, Randall Jeffrey; Zhang, Feng

    2015-01-01

    Recent advances in the development of genome editing technologies based on programmable nucleases have significantly improved our ability to make precise changes in the genomes of eukaryotic cells. Genome editing is already broadening our ability to elucidate the contribution of genetics to disease by facilitating the creation of more accurate cellular and animal models of pathological processes. A particularly tantalizing application of programmable nucleases is the potential to directly correct genetic mutations in affected tissues and cells to treat diseases that are refractory to traditional therapies. Here we discuss current progress towards developing programmable nuclease-based therapies as well as future prospects and challenges. PMID:25654603

  6. LHCb Physics and 2010-11 prospects

    SciTech Connect

    Perazzini, Stefano

    2011-10-24

    LHCb is one of the four major experiments operating at the Large Hadron Collider, and is specifically dedicated to the measurement of CP-violation and rare decays in the beauty and charm quark sectors. By employing data from early LHC runs it is possible to assess the performance of the detector and to better understand the potential of the LHCb flavour programme. After a brief introduction of the motivations and of the relevant physics goals, the prospects about key CP-violation and rare decay measurements will be presented. Emphasis will be given to those topics where results with particular sensitivity to New Physics are expected during the 2010-11 run.

  7. Systemic lupus erythematosus. A prospective analysis.

    PubMed Central

    Grigor, R; Edmonds, J; Lewkonia, R; Bresnihan, B; Hughes, G R

    1978-01-01

    The spectrum of organ involvement in 50 patients with systemic lupus erythematosus has been assessed in a prospective study. All patients were admitted to hospital electively for 2 days and a complete clinical and laboratory assessment protocol completed. Subsequent hospital admissions depended on clinical status. The overall mean observation period was 29 months. Widespread multisystem involvement was found in every patient. Subclinical abnormalities of respiratory and cerebral function were common even in patients in clinical remission. A more conservative approach than has been generally recommended was used for the management of systemic lupus erythematosus and is supported by the estimated 5-year survival of 98%. PMID:646463

  8. Future Prospects of Low Compression Ignition Engines

    NASA Astrophysics Data System (ADS)

    Azim, M. A.

    2014-01-01

    This study presents a review and analysis of the effects of compression ratio and inlet air preheating on engine performance in order to assess the future prospects of low compression ignition engines. Regulation of the inlet air preheating allows some control over the combustion process in compression ignition engines. Literature shows that low compression ratio and inlet air preheating are more beneficial to internal combustion engines than detrimental. Even the disadvantages due to low compression ratio are outweighed by the advantages due to inlet air preheating and vice versa.

  9. Particle physics: recent successes and future prospects

    SciTech Connect

    Wojcicki, S.

    1984-12-01

    There is no doubt that as yet we do not have an ultimate theory of matter and forces in spite of the remarkable successes of the past decade. In this talk the author attempts to summarize briefly the historical background that led us to the present level of understanding, or more specifically to the standard model of particle physics. Subsequently the author describes several difficulties with this picture, continues with some possible indications of new physics, and finally ends with the discussion of the prospects for the future. 32 references.

  10. Chiral xenobiotics bioaccumulations and environmental health prospectives.

    PubMed

    Hussain, Iqbal; ALOthman, Zeid A; Alwarthan, Abdulrahman A; Sanagi, Mohd Marsin; Ali, Imran

    2015-08-01

    The chiral xenobiotics are very dangerous for all of us due to the different enantioselective toxicities of the enantiomers. Besides, these have different enantioselective bioaccumulations and behaviors in our body and other organisms. It is of urgent need to understand the enantioselective bioaccumulations, toxicities, and the health hazards of the chiral xenobiotics. The present article describes the classification, sources of contamination, distribution, enantioselective bioaccumulation, and the toxicities of the chiral xenobiotics. Besides, the efforts are also made to discuss the prevention and remedial measures of the havoc of the chiral xenobiotics. The challenges of the chiral xenobiotics have also been highlighted. Finally, future prospectives are also discussed. PMID:26148690

  11. Levosimendan: The current situation and new prospects.

    PubMed

    Moreno, Nuno; Tavares-Silva, Marta; Lourenço, André P; Oliveira-Pinto, José; Henriques-Coelho, Tiago; Leite-Moreira, Adelino F

    2014-12-01

    Levosimendan is a pyridazinone-dinitrile derivative with positive inotropic and vasodilatory effects that has beneficial effects on myocardial performance. In previous randomized studies levosimendan improved hemodynamics and clinical course, but its effect on prognosis is still unclear. This important issue has limited its use. Although primarily used in the management of acute heart failure syndromes, this new inotropic agent may play a role in other clinical conditions. This review aims to summarize current knowledge on levosimendan and to present future prospects for the use of this drug. PMID:25459636

  12. Thorium: Issues and prospects in Malaysia

    SciTech Connect

    AL-Areqi, Wadeeah M.; Majid, Amran Ab.; Sarmani, Sukiman; Bahri, Che Nor Aniza Che Zainul

    2015-04-29

    In Malaysia, thorium exists in minerals and rare earth elements production residue. The average range of thorium content in Malaysian monazite and xenotime minerals was found about 70,000 and 15,000 ppm respectively. About 2,636 tonnes of Malaysian monazite was produced for a period of 5 years (2006-2010) and based on the above data, it can be estimated that Malaysian monazite contains about 184.5 tonnes of thorium. Although thorium can become a major radiological problem to our environment, but with the significant deposit of thorium in Malaysian monazite, it has a prospect as a future alternative fuel in nuclear technology. This paper will discuss the thorium issues in Malaysia especially its long term radiological risks to public health and environment at storage and disposal stages, the prospect of exploring and producing high purity thorium from our rare earth elements minerals for future thorium based reactor. This paper also highlights the holistic approach in thorium recovery from Malaysian rare earth element production residue to reduce its radioactivity and extraction of thorium and rare earth elements from the minerals with minimum radiological impact to health and environment.

  13. Thorium: Issues and prospects in Malaysia

    NASA Astrophysics Data System (ADS)

    AL-Areqi, Wadeeah M.; Majid, Amran Ab.; Sarmani, Sukiman; Bahri, Che Nor Aniza Che Zainul

    2015-04-01

    In Malaysia, thorium exists in minerals and rare earth elements production residue. The average range of thorium content in Malaysian monazite and xenotime minerals was found about 70,000 and 15,000 ppm respectively. About 2,636 tonnes of Malaysian monazite was produced for a period of 5 years (2006-2010) and based on the above data, it can be estimated that Malaysian monazite contains about 184.5 tonnes of thorium. Although thorium can become a major radiological problem to our environment, but with the significant deposit of thorium in Malaysian monazite, it has a prospect as a future alternative fuel in nuclear technology. This paper will discuss the thorium issues in Malaysia especially its long term radiological risks to public health and environment at storage and disposal stages, the prospect of exploring and producing high purity thorium from our rare earth elements minerals for future thorium based reactor. This paper also highlights the holistic approach in thorium recovery from Malaysian rare earth element production residue to reduce its radioactivity and extraction of thorium and rare earth elements from the minerals with minimum radiological impact to health and environment.

  14. Prospective study of definite caterpillar exposures.

    PubMed

    Balit, Corrine R; Geary, Merilyn J; Russell, Richard C; Isbister, Geoffrey K

    2003-11-01

    Exposure to caterpillars results in a variety of clinical effects depending on the species involved. The aim of this study was to describe the clinical effects from caterpillar exposures within Australia. Cases were recruited prospectively from calls to a poison information centre. Subjects were included if they had a definite exposure and they had collected the caterpillar or cocoon. The caterpillars were identified to genus and species level where possible. There were 36 included cases: two were contact exposures to caterpillar contents, one was an ingestion of a caterpillar and the remaining 33 patients had definite reactions from caterpillar or cocoon exposure. There were five families of caterpillars identified in the study: Arctiidae, Limacodidae, Anthelidae, Lymantriidae and Sphingidae, many of which occur worldwide. Clinical effects ranged from severe pain to an urticarial response depending on the species involved. There were no adverse effects following ingestion in this study. Treatment consisted primarily of removal of the caterpillar or cocoon. Other treatment measures consisted of symptomatic treatment such as ice packs and antihistamines. This is the first prospective study of caterpillar exposures within Australia and demonstrates that exposures can result in a variety of reactions depending on the family and species involved. PMID:14602121

  15. Prospective Demographic Study of Cosmetic Surgery Patients

    PubMed Central

    Schlessinger, Daniel; Schlessinger, Bernard

    2010-01-01

    Objectives: The authors sought to examine and assess cosmetic surgery patient demographics as well as age in relation to partner, in a prospective manner, analyzing data for any significant correlations. Design: The authors conducted a prospective study utilizing a survey. Setting: The study was conducted in a private, nonacademic dermatological practice. Participants: Three hundred thirty-six patients participated in this study. Results: Demographics of onabotulinumtoxinA/abobotulinumtoxinA (neurotoxins), fillers, and laser hair removal users were studied. The data show that the average private practice cosmetic surgery patient in this study is a married (67.5%), college-educated or greater (66.9%), employed (74.3%), mother (74.5%). In the fillers category, 50 percent of women were older than their partners, as opposed to 14.8 percent in 2008 Census data. Additionally, women were more educated and employed to a higher percentage than similar women in 2008 Census data. Data on motivations were statistically not significant. Conclusion: Data from this study show potential correlations with Census data norms in marital status and motherhood status categories, but not in the age in relation to partner, education, and employment level categories. Motivations of individuals undergoing cosmetic surgery will need further analysis in future studies. PMID:21103314

  16. Prospective Lymphedema Surveillance in a Clinic Setting.

    PubMed

    Chance-Hetzler, Janet; Armer, Jane; Van Loo, Maggie; Anderson, Blake; Harris, Robin; Ewing, Rebecca; Stewart, Bob

    2015-01-01

    The potential impact of breast cancer-related lymphedema (LE) is quite extensive, yet it often remains under-diagnosed until the later stages. This project examines the effectiveness of prospective surveillance in post-surgical breast cancer patients. A retrospective analysis of 49 out of 100 patients enrolled in a longitudinal prospective study at a Midwestern breast center evaluates: (1) time required for completion of bilateral limb measurements and Lymphedema Breast Cancer Questionnaire (LBCQ); (2) referral to LE management with limb volume increase (LVI) and/or LBCQ symptoms; and (3) cost of LE management at lower LVI (≥5%-≤10%) versus traditional (≥10%). Findings revealed a visit timeframe mean of 40.3 min (range = 25-60); 43.6% of visits were ≤30-min timeframe. Visit and measurement times decreased as clinic staff gained measurement experience; measurement time mean was 17.9 min (range = 16.9-18.9). LBCQ symptoms and LVI were significantly (p < 0.001) correlated to LE referral; six of the nine patients referred (67%) displayed both LBCQ symptoms/LVI. Visits with no symptoms reported did not result in referral, demonstrating the importance of using both indicators when assessing early LE. Lower threshold referral provides compelling evidence of potential cost savings over traditional threshold referral with reported costs of: $3755.00 and $6353.00, respectively (40.9% savings). PMID:26308061

  17. The Development of Prospective Secondary Biology Teachers PCK

    ERIC Educational Resources Information Center

    Brown, Patrick; Friedrichsen, Patricia; Abell, Sandra

    2013-01-01

    In order to understand how prospective teachers develop knowledge for teaching, researchers must identify the types of knowledge that are integral to effective science teaching. This case study investigated how 4 prospective secondary biology teachers' science teaching orientations, knowledge of science learners, and knowledge of instructional…

  18. 48 CFR 52.216-5 - Price Redetermination-Prospective.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Price Redetermination....216-5 Price Redetermination—Prospective. As prescribed in 16.205-4, insert the following clause: Price Redetermination—Prospective (OCT 1997) (a) General. The unit prices and the total price stated in this...

  19. Prospective Secondary Mathematics Teachers' Perspectives and Mathematical Knowledge for Teaching

    ERIC Educational Resources Information Center

    Karagöz-Akar, Gülseren

    2016-01-01

    This study investigated the relationship between prospective secondary mathematics teachers' perspectives and their mathematical knowledge for teaching in action. Data from two prospective teachers' practice-teachings, one in geometry and one in algebra, their lesson plans and self-reflections were analyzed with Teacher Perspectives and Knowledge…

  20. 45 CFR 233.22 - Determining eligibility under prospective budgeting.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 2 2010-10-01 2010-10-01 false Determining eligibility under prospective budgeting. 233.22 Section 233.22 Public Welfare Regulations Relating to Public Welfare OFFICE OF FAMILY... eligibility under prospective budgeting. In States which compute the amount of the assistance...

  1. 45 CFR 233.22 - Determining eligibility under prospective budgeting.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 2 2011-10-01 2011-10-01 false Determining eligibility under prospective budgeting. 233.22 Section 233.22 Public Welfare Regulations Relating to Public Welfare OFFICE OF FAMILY... eligibility under prospective budgeting. In States which compute the amount of the assistance...

  2. Prospective Primary School Teachers' Perceptions on Boiling and Freezing

    ERIC Educational Resources Information Center

    Senocak, Erdal

    2009-01-01

    The aim of this study was to investigate the perceptions of prospective primary school teachers on the physical state of water during the processes of boiling and freezing. There were three stages in the investigation: First, open-ended questions concerning the boiling and freezing of water were given to two groups of prospective primary school…

  3. Prospective Teachers' Experiences in Developing Lessons with Dynamic Mathematics Software

    ERIC Educational Resources Information Center

    Haciomeroglu, Erhan Selcuk; Bu, Lingguo; Schoen, Robert C.; Hohenwarter, Markus

    2011-01-01

    This study sought to examine the development of prospective secondary mathematics teachers' Technological Pedagogical Content Knowledge as they worked individually and in small groups to develop and present lessons with dynamic mathematics software. In a three-semester long study, data were collected from 68 prospective secondary mathematics…

  4. 36 CFR 1005.14 - Prospecting, mining, and mineral leasing.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... mineral leasing. 1005.14 Section 1005.14 Parks, Forests, and Public Property PRESIDIO TRUST COMMERCIAL AND PRIVATE OPERATIONS § 1005.14 Prospecting, mining, and mineral leasing. Prospecting, mining, and the location of mining claims under the general mining laws and leasing under the mineral leasing laws...

  5. 36 CFR 1005.14 - Prospecting, mining, and mineral leasing.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... mineral leasing. 1005.14 Section 1005.14 Parks, Forests, and Public Property PRESIDIO TRUST COMMERCIAL AND PRIVATE OPERATIONS § 1005.14 Prospecting, mining, and mineral leasing. Prospecting, mining, and the location of mining claims under the general mining laws and leasing under the mineral leasing laws...

  6. 36 CFR 1005.14 - Prospecting, mining, and mineral leasing.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... mineral leasing. 1005.14 Section 1005.14 Parks, Forests, and Public Property PRESIDIO TRUST COMMERCIAL AND PRIVATE OPERATIONS § 1005.14 Prospecting, mining, and mineral leasing. Prospecting, mining, and the location of mining claims under the general mining laws and leasing under the mineral leasing laws...

  7. 36 CFR 1005.14 - Prospecting, mining, and mineral leasing.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... mineral leasing. 1005.14 Section 1005.14 Parks, Forests, and Public Property PRESIDIO TRUST COMMERCIAL AND PRIVATE OPERATIONS § 1005.14 Prospecting, mining, and mineral leasing. Prospecting, mining, and the location of mining claims under the general mining laws and leasing under the mineral leasing laws...

  8. 36 CFR 1005.14 - Prospecting, mining, and mineral leasing.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... mineral leasing. 1005.14 Section 1005.14 Parks, Forests, and Public Property PRESIDIO TRUST COMMERCIAL AND PRIVATE OPERATIONS § 1005.14 Prospecting, mining, and mineral leasing. Prospecting, mining, and the location of mining claims under the general mining laws and leasing under the mineral leasing laws...

  9. 48 CFR 52.216-5 - Price Redetermination-Prospective.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 2 2013-10-01 2013-10-01 false Price Redetermination....216-5 Price Redetermination—Prospective. As prescribed in 16.205-4, insert the following clause: Price Redetermination—Prospective (OCT 1997) (a) General. The unit prices and the total price stated in this...

  10. 48 CFR 52.216-5 - Price Redetermination-Prospective.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 2 2014-10-01 2014-10-01 false Price Redetermination....216-5 Price Redetermination—Prospective. As prescribed in 16.205-4, insert the following clause: Price Redetermination—Prospective (OCT 1997) (a) General. The unit prices and the total price stated in this...

  11. 48 CFR 52.216-5 - Price Redetermination-Prospective.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 2 2011-10-01 2011-10-01 false Price Redetermination....216-5 Price Redetermination—Prospective. As prescribed in 16.205-4, insert the following clause: Price Redetermination—Prospective (OCT 1997) (a) General. The unit prices and the total price stated in this...

  12. 48 CFR 52.216-5 - Price Redetermination-Prospective.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 2 2012-10-01 2012-10-01 false Price Redetermination....216-5 Price Redetermination—Prospective. As prescribed in 16.205-4, insert the following clause: Price Redetermination—Prospective (OCT 1997) (a) General. The unit prices and the total price stated in this...

  13. Investigating Prospective Teachers' Ability to Write Context-Based Problems

    ERIC Educational Resources Information Center

    Ültay, Neslihan; Donmez Usta, Necla

    2016-01-01

    Purpose: The purpose of this study is to investigate the prospective teachers' ability to write context-based problems about the concepts in radioactivity unit. Methodology: The study is carried out in a university in Turkey with 21 prospective teachers in physics, chemistry and biology in 2014-2015 fall terms. In the study, data are collected…

  14. Prospective Chemistry Teachers' Conceptions of Chemical Thermodynamics and Kinetics

    ERIC Educational Resources Information Center

    Sozbilir, Mustafa; Pinarbasi, Tacettin; Canpolat, Nurtac

    2010-01-01

    This study aimed at identifying specifically prospective chemistry teachers' difficulties in determining the differences between the concepts of chemical thermodynamics and kinetics. Data were collected from 67 prospective chemistry teachers at Kazim Karabekir Education Faculty of Ataturk University in Turkey during 2005-2006 academic year. Data…

  15. Prospective Physics Teachers' Awareness of Radiation and Radioactivity

    ERIC Educational Resources Information Center

    Tasoglu, Aslihan Kartal; Ates, Özlem; Bakaç, Mustafa

    2015-01-01

    The purpose of this study is to investigate prospective physics teachers' knowledge of and attitude towards radiation and radioactivity. Participants of this study are 56 prospective physics teachers. A questionnaire related with the knowledge about radiation and radiation fear was conducted. The results of this study showed that most of the…

  16. Analyzing Perceptions of Prospective Teachers about Their Media Literacy Competencies

    ERIC Educational Resources Information Center

    Recepoglu, Ergun; Ergun, Muammer

    2013-01-01

    The purpose of this study is to analyze perceptions of prospective teachers about their media literacy competencies in terms of different variables. This is a descriptive research in the survey model which tries to detect the current situation. Study group includes 580 prospective teachers from Turkish, Primary School, Social Studies, Science,…

  17. 42 CFR 456.705 - Prospective drug review.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 4 2010-10-01 2010-10-01 false Prospective drug review. 456.705 Section 456.705... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS UTILIZATION CONTROL Drug Use Review (DUR) Program and Electronic Claims Management System for Outpatient Drug Claims § 456.705 Prospective drug review. (a)...

  18. 42 CFR 456.705 - Prospective drug review.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 4 2011-10-01 2011-10-01 false Prospective drug review. 456.705 Section 456.705... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS UTILIZATION CONTROL Drug Use Review (DUR) Program and Electronic Claims Management System for Outpatient Drug Claims § 456.705 Prospective drug review. (a)...

  19. Prospective Primary School Teachers' Misconceptions about States of Matter

    ERIC Educational Resources Information Center

    Tatar, Erdal

    2011-01-01

    The purpose of this study was to identify prospective primary school teachers' misconceptions about the states of matter. The sample of the study was 227 fourth-year prospective primary school teachers in a Department of Primary Education in Turkey. Researcher asked from every participant to write a response to an open ended question about…

  20. 47 CFR 76.940 - Prospective rate reduction.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Prospective rate reduction. 76.940 Section 76.940 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES MULTICHANNEL VIDEO AND CABLE TELEVISION SERVICE Cable Rate Regulation § 76.940 Prospective rate reduction....

  1. Prospective Teachers' Beliefs about Imaginative Thinking in K-12 Schooling

    ERIC Educational Resources Information Center

    Beghetto, Ronald A.

    2008-01-01

    This study examined prospective teachers' (N=176) beliefs about the role that memorization and imaginative thinking play in K-12 schooling. Results indicate that the majority of prospective teachers (68.5%) believed there was a specific grade that teachers should place more emphasis on the memorization of correct answers rather than encourage…

  2. Prospective Teachers' Perceptions on Different Aspects of Portfolio

    ERIC Educational Resources Information Center

    Ok, Ahmet; Erdogan, Mehmet

    2010-01-01

    This qualitative-case study examined how portfolio and portfolio assessment were perceived by prospective teachers. The participants were 23 prospective teachers from seven different teaching areas from a Turkish university. A semi-structured individual interview was conducted. The interview schedule included 15 open-ended questions. The main…

  3. Examining Prospective Science Teachers' Satisfaction with Their Department

    ERIC Educational Resources Information Center

    Erdogan, Mehmet; Usak, Muhammet

    2007-01-01

    The purpose of this study was to explore how satisfied prospective science teachers are with their department (academic staff and administration) at different Faculties of Education in Turkey. For this purpose, Prospective Science Teachers Satisfaction Questionnaire (PSTSQ) was developed by considering related literature. PSTSQ consists of two…

  4. Prospective Teachers Experiences Teaching Mathematics to African American Males

    ERIC Educational Resources Information Center

    Sheppard, Peter

    2009-01-01

    This paper describes an effort to provide prospective teachers opportunities to better understand African American male students and better focus on how they learn mathematics. Prospective teachers spent 15 hours over an eight week span mentoring and tutoring African American males without the guise of practicing teachers. Qualitative data drawn…

  5. Prospective Teachers' Problem Solving Skills and Self-Confidence Levels

    ERIC Educational Resources Information Center

    Gursen Otacioglu, Sena

    2008-01-01

    The basic objective of the research is to determine whether the education that prospective teachers in different fields receive is related to their levels of problem solving skills and self-confidence. Within the mentioned framework, the prospective teachers' problem solving and self-confidence levels have been examined under several variables.…

  6. Prospective Teachers' Beliefs about Problem Solving in Multiple Ways

    ERIC Educational Resources Information Center

    Arikan, Elif Esra

    2016-01-01

    The purpose of this study is to analyze whether prospective teachers believe solving a mathematics problem involves in using different solution methods. 60 mathematics prospective teachers who take the pedagogic training program in a state university were participated in this study. Five open-ended questions were asked. The study was carried out…

  7. Neural Correlates of Prospective Memory across the Lifespan

    ERIC Educational Resources Information Center

    Zollig, Jacqueline; West, Robert; Martin, Mike; Altgassen, Mareike; Lemke, Ulrike; Kliegel, Matthias

    2007-01-01

    Overview: Behavioural data reveal an inverted U-shaped function in the efficiency of prospective memory from childhood to young adulthood to later adulthood. However, prior research has not directly compared processes contributing to age-related variation in prospective memory across the lifespan, hence it is unclear whether the same factors…

  8. Prospective Elementary Teachers' Development of Fraction Number Sense

    ERIC Educational Resources Information Center

    Utley, Juliana; Reeder, Stacy

    2012-01-01

    Can prospective elementary teachers "unlearn" harmful algorithms used with fractions as they are invited to develop fraction number sense? This study examined the development of prospective elementary teachers' fraction number sense during an intermediate (grades 5-8) mathematics methods course. During this course, participants' were involved in a…

  9. 42 CFR 456.705 - Prospective drug review.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 4 2012-10-01 2012-10-01 false Prospective drug review. 456.705 Section 456.705... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS UTILIZATION CONTROL Drug Use Review (DUR) Program and Electronic Claims Management System for Outpatient Drug Claims § 456.705 Prospective drug review. (a)...

  10. 42 CFR 456.705 - Prospective drug review.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 4 2013-10-01 2013-10-01 false Prospective drug review. 456.705 Section 456.705... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS UTILIZATION CONTROL Drug Use Review (DUR) Program and Electronic Claims Management System for Outpatient Drug Claims § 456.705 Prospective drug review. (a)...

  11. 42 CFR 456.705 - Prospective drug review.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 4 2014-10-01 2014-10-01 false Prospective drug review. 456.705 Section 456.705... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS UTILIZATION CONTROL Drug Use Review (DUR) Program and Electronic Claims Management System for Outpatient Drug Claims § 456.705 Prospective drug review. (a)...

  12. Why Teach? Prospective Teachers' Reasons for Entering the Profession.

    ERIC Educational Resources Information Center

    Phillips, Marian B.; Hatch, J. Amos

    This paper details an analysis of prospective early childhood teachers' responses on a university application to the question "Why are you interested in becoming a teacher?" The paper identifies potential sources of strength and vulnerability in students' written responses and offers tentative interpretations that critique prospective early…

  13. A Study of Prospective Teachers' Consumption Patterns on Special Days

    ERIC Educational Resources Information Center

    Saglam, Halil Ibrahim

    2016-01-01

    The purpose of this study was to identify prospective teachers' consumption patterns on special days. The sample was comprised of 29 prospective teachers (22 females and 7 males) who studied Primary School Teaching in the Faculty of Education at Sakarya University during the 2014-2015 Academic Year. The study was designed as a phenomenological…

  14. Study of Prospective Teachers' Conceptualization of Value Preferences

    ERIC Educational Resources Information Center

    Koruklu, Nermin; Aktamis, Hilal

    2012-01-01

    The purpose of this study was to determine whether there were any changes in the conceptualization of prospective teachers' values preferences during their university studies. The research group was composed of 208 prospective teachers who were studying at Science Education, Social Science Education and Fine Arts Education at Adnan Menderes…

  15. Conversations about the Moon with Prospective Teachers in Japan

    ERIC Educational Resources Information Center

    Suzuki, Mariko

    2003-01-01

    As an instructor in courses for prospective teachers, I am interested in my students' ideas and ways in which they reconstruct their ideas in conversations about science. In the case study presented here, I reflect upon (a) ways in which I engaged prospective teachers in thinking together about their observations of a natural phenomenon, the…

  16. Motivating Inhibition--Reward Prospect Speeds up Response Cancellation

    ERIC Educational Resources Information Center

    Boehler, Carsten N.; Hopf, Jens-Max; Stoppel, Christian M.; Krebs, Ruth M.

    2012-01-01

    Reward prospect has been demonstrated to facilitate various cognitive and behavioral operations, particularly by enhancing the speed and vigor of processes linked to approaching reward. Studies in this domain typically employed task regimes in which participants' overt responses are facilitated by prospective rewards. In contrast, we demonstrate…

  17. 78 FR 56605 - Drawbridge Operation Regulation; Lafourche Bayou, Larose, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-13

    ...The Coast Guard is modifying its drawbridge operation regulations by replacing the reference to the SR 310 (Larose Pontoon) Bridge with the LA 657 (Larose) Vertical Lift Bridge. The SR 310 bridge has been taken out of service and has been replaced by the LA 657 bridge. This substitution will also permit the LA 657 bridge to operate under the same schedule as the five other bridges in this......

  18. 33 CFR 117.439 - Des Allemands Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... given. (b) The draw of the Burlington Northern Santa Fe Railroad bridge, mile 14.0, shall open on signal Monday through Friday from 7 a.m. to 3 p.m. At all other times the draw shall open on signal if at...

  19. 33 CFR 117.439 - Des Allemands Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... given. (b) The draw of the Burlington Northern Santa Fe Railroad bridge, mile 14.0, shall open on signal Monday through Friday from 7 a.m. to 3 p.m. At all other times the draw shall open on signal if at...

  20. 33 CFR 117.475 - Little (Petit) Caillou Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) bridge, mile 26.6 near Montegut, shall open on signal; except that, from 9 p.m. to 5 a.m., the draws...Plantis) bridge, mile 29.9 near Bourg, and the S24 bridge, mile 33.7 at Presquille, shall open on...

  1. 33 CFR 117.475 - Little (Petit) Caillou Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) bridge, mile 26.6 near Montegut, shall open on signal; except that, from 9 p.m. to 5 a.m., the draws...Plantis) bridge, mile 29.9 near Bourg, and the S24 bridge, mile 33.7 at Presquille, shall open on...

  2. 33 CFR 117.475 - Little (Petit) Caillou Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) bridge, mile 26.6 near Montegut, shall open on signal; except that, from 9 p.m. to 5 a.m., the draws...Plantis) bridge, mile 29.9 near Bourg, and the S24 bridge, mile 33.7 at Presquille, shall open on...

  3. Mechanical planter update: 2007 Bayou Teche test plant cane results

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Mechanization of cane planting has been somewhat limited, due to the fact that the entire 4-5 ft stalk must be planted horizontally in the seedbed. Several modifications were made to mechanical planters by a grower cooperator. To test the modifications, a replicated field trial was planted on Augus...

  4. Hydrologic data for Cow Bayou, Brazos River Basin, Texas, 1975

    USGS Publications Warehouse

    Mitchell, R.N.; Wehmeyer, E.E.

    1977-01-01

    The U.S. Soil Conservation Service is actively engaged in the implementation of flood- and soil-erosion reducing measures in Texas under the authority of. "The Flood Control Act of 1936 and 1944" and "Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found a total of approximately 3,500 floodwater~retarding structures to be physically and economically feasible in Texas. As of September 30, 1975, 1,680 of these structures had been built.

  5. 75 FR 33505 - Drawbridge Operation Regulation; Teche Bayou, Morbihan, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-14

    ....B.Wade@uscg.mil . If you have questions on viewing the docket, call Renee V. Wright, Program Manager..., crew boats and oil field support/service vessels. The bridge opens for the passage of navigation...

  6. 77 FR 43165 - Drawbridge Operation Regulation; Lafourche Bayou, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-24

    .... SUPPLEMENTARY INFORMATION: Table of Acronyms DHS Department of Homeland Security FR Federal Register NPRM Notice... the Federal Register (77 FR 22520). We received one comment on the proposed rule and it was in favor... published in the Federal Register (77 FR 35897). We received no comments on the modified proposed rule....

  7. Prospective Memory Training: Outlining a New Approach.

    PubMed

    Waldum, Emily R; Dufault, Carolyn L; McDaniel, Mark A

    2014-12-01

    Prospective memory (PM) tasks are those that must be performed in the future (e.g., attend an appointment). While these everyday tasks can be especially relevant for older adults (i.e., medication adherence), and have been associated with age-related decline, PM has been virtually overlooked in the cognitive training domain. This article describes the first comprehensive PM training intervention. Older adults (age 55 to 75) who received training completed 8 weekly PM training sessions that consisted of variable PM training tasks, strategy-focused discussion, and homework assignments. Those assigned to a control group completed only the first and last training task. On both a real-world proxy PM transfer task and the training tasks detailed here, there was a positive impact of PM training, suggesting practical benefits of the current training package for older adults. Benefits may also extend to other special populations who experience PM impairments (e.g., traumatic brain injury [TBI], Parkinson's). PMID:25480795

  8. Global Prospects Rooted in Soil Science

    SciTech Connect

    Janzen, H. H.; Fixen, P.; Franzluebbers, A. J.; Hattey, J.; Izaurralde, Roberto C.; Ketterings, Q. M.; Lobb, D. A.; Schlesinger, W.

    2010-11-17

    Th e biosphere, our fragile and exquisite home, is changing abruptly and irrevocably, largely from human interference. Most or all of the coming stresses have links to the land, so fi nding hopeful outcomes depend on wide and deep understanding of soils. In this review, we pose eight urgent issues confronting humanity in coming decades: demands for food, water, nutrients, and energy; and challenges of climate change, biodiversity, “waste” reuse, and global equity. We then suggest some steps soil scientists might take to address these questions: a refocusing of research, a broadening of vision, a renewed enticement of emerging scientists, and more lucid telling of past successes and future prospects. Th e questions posed and responses posited are incomplete and not yet fully refi ned. But the conversations they elicit may help direct soil science toward greater relevance in preserving our fragile home on this changing planet.

  9. Magnetic mirror fusion: status and prospects

    SciTech Connect

    Post, R.F.

    1980-02-11

    Two improved mirror systems, the tandem mirror (TM) and the field-reversed mirror (FRM) are being intensively studied. The twin practical aims of these studies: to improve the economic prospects for mirror fusion power plants and to reduce the size and/or complexity of such plants relative to earlier approaches to magnetic fusion. While at the present time the program emphasis is still strongly oriented toward answering scientific questions, the emphasis is shifting as the data accumulates and as larger facilities - ones with a heavy technological and engineering orientation - are being prepared. The experimental and theoretical progress that led to the new look in mirror fusion research is briefly reviewed, the new TM and the FRM ideas are outlined, and the projected future course of mirror fusion research is discussed.

  10. Rare decays experimental summary and prospects

    SciTech Connect

    Littenberg, L.

    1996-12-31

    I review the status and future prospects of searches for forbidden and highly kaon suppressed decays. This workshop comes as we are poised at the threshold of a new generation of rare K decay experiments. There are new experiments running or about to run at KEK, BNL, FNAL, and CERN. In another year or so these will be joined by the KLOE experiment at DA{Phi}NE. The good news is that it`s a very exciting time. The bad news, at least for a reviewer, is that there aren`t too many new results. Thus I`ll be giving a little more attention than usual to what the experimenters expect to do. My discussion of rare K decays covers processes that are forbidden in the Standard Model, those that highly suppressed and to a smaller extent, those that are merely discouraged.

  11. Innovation and design approaches within prospective ergonomics.

    PubMed

    Liem, André; Brangier, Eric

    2012-01-01

    In this conceptual article the topic of "Prospective Ergonomics" will be discussed within the context of innovation, design thinking and design processes & methods. Design thinking is essentially a human-centred innovation process that emphasises observation, collaboration, interpretation, visualisation of ideas, rapid concept prototyping and concurrent business analysis, which ultimately influences innovation and business strategy. The objective of this project is to develop a roadmap for innovation, involving consumers, designers and business people in an integrative process, which can be applied to product, service and business design. A theoretical structure comprising of Innovation perspectives (1), Worldviews supported by rationalist-historicist and empirical-idealistic dimensions (2) and Models of "design" reasoning (3) precedes the development and classification of existing methods as well as the introduction of new ones. PMID:22317532

  12. ECR ion sources: present status and prospects

    NASA Astrophysics Data System (ADS)

    Melin, G.

    1997-01-01

    Although now widely used for many applications, the electron cyclotron resonance ion sources (ECRIS), an outgrowth of the fusion plasma research, still suffer from some mystification, or at least from a lack of understanding. This article is an attempt to give a broad overview of the today ECRIS activity devoted to the production of highly charged ions: it therefore describes both physics and theory efforts, technology, performances, plans and prospects as well. An important chapter gives the status of understanding the ECRIS behavior, both the current thinking on how they operate and the experimental evidences whenever it is possible. The various existing sources, their design and main features, are then surveyed. At last the present trends of development, the potential directions for future improvement are examined.

  13. Prospects of graphene electrodes in photovoltaics

    NASA Astrophysics Data System (ADS)

    Khatami, Yasin; Liu, Wei; Kang, Jiahao; Banerjee, Kaustav

    2013-09-01

    Transparent conductors (TCs) are becoming extremely popular in many different electronic applications such as touch panels, displays, light emitting devices, light sensors and solar cells. The commonly used electrode in these applications is Indium Tin Oxide (ITO). However, the cost of ITO is increasing rapidly due to the limited supply of Indium. Other issues such as lack of flexibility and cost of the deposition process make ITO less favorable in transparent electrode applications. Graphene has been under exploration as an alternative material for TC applications in the recent years. Graphene based TCs have been shown experimentally to exhibit promising electrical and optical properties. In this paper, the prospects of graphene for transparent conductors in photovoltaics are discussed. The recent advancements in this field as well as the theoretical predictions and possible pathways for improvements are presented. In the process section, we discuss methods to synthesize few-layer graphene (FLG) with high quality in a controllable manner.

  14. Future prospects for radial-velocity searches

    NASA Astrophysics Data System (ADS)

    Collier Cameron, A.

    2015-10-01

    Instrumental advances in the last few years have seen the "high frontier" of radial-velocity searches moving towards detection of planets in the few-Earth-mas regime around solar-type stars. A new generation of stable high-resolution infared spectrometers will soon see a move towards detection of Earth-mass planets in the habitable zones of low-mass stars. The infared and polarimetric capabilities of the next generation of instruments will also help to combat astrophysical noise from the host stars. In this talk I will survey prospects for realising these ambitions in the face of the challenges presented by instrumental limitations and astrophysical noise originating in the host stars themselves. I will discuss synergies with forthcoming ground-based and space-based transit missions such as NGTS, TESS and CHEOPS, and examine considerations to be taken into account when selecting targets and formulating observation strategies.

  15. Universal doomsday: analyzing our prospects for survival

    SciTech Connect

    Gerig, Austin; Olum, Ken D.; Vilenkin, Alexander E-mail: kdo@cosmos.phy.tufts.edu

    2013-05-01

    Given a sufficiently large universe, numerous civilizations almost surely exist. Some of these civilizations will be short-lived and die out relatively early in their development, i.e., before having the chance to spread to other planets. Others will be long-lived, potentially colonizing their galaxy and becoming enormous in size. What fraction of civilizations in the universe are long-lived? The ''universal doomsday'' argument states that long-lived civilizations must be rare because if they were not, we should find ourselves living in one. Furthermore, because long-lived civilizations are rare, our civilization's prospects for long-term survival are poor. Here, we develop the formalism required for universal doomsday calculations and show that while the argument has some force, our future is not as gloomy as the traditional doomsday argument would suggest, at least when the number of early existential threats is small.

  16. Prospects for antiproton physics, my perspective

    NASA Astrophysics Data System (ADS)

    Oelert, Walter

    These closing remarks are not supposed to be a summary talk, for this please have a look to the individual contributions to be published in the proceedings, but rather some considerations on future prospects for antiproton physics. However, first I would like to appreciate the organizers idea for giving me the opportunity to thank them for a well balanced, exciting and interesting conference LEAP-2011 in this marvelous city of Vancouver. I am sure we all loved to be here and enjoyed the hospitality and the bond of friendship we could experience during these days. We appreciate the patience and help of all the local organizers where I especially would like to mention Jana Thomson for her endless and helpful assignment. Thank you all—the participants, the speakers, the conference chair, the sponsors—for making this conference a success and we are looking forward to the next occasion in this series of meetings which will be celebrated in Uppsala.

  17. Prospects for antiproton physics, my perspective

    NASA Astrophysics Data System (ADS)

    Oelert, Walter

    2012-12-01

    These closing remarks are not supposed to be a summary talk, for this please have a look to the individual contributions to be published in the proceedings, but rather some considerations on future prospects for antiproton physics. However, first I would like to appreciate the organizers idea for giving me the opportunity to thank them for a well balanced, exciting and interesting conference LEAP-2011 in this marvelous city of Vancouver. I am sure we all loved to be here and enjoyed the hospitality and the bond of friendship we could experience during these days. We appreciate the patience and help of all the local organizers where I especially would like to mention Jana Thomson for her endless and helpful assignment. Thank you all—the participants, the speakers, the conference chair, the sponsors—for making this conference a success and we are looking forward to the next occasion in this series of meetings which will be celebrated in Uppsala.

  18. Earth Rotation Dynamics: Review and Prospects

    NASA Technical Reports Server (NTRS)

    Chao, Benjamin F.

    2004-01-01

    Modem space geodetic measurement of Earth rotation variations, particularly by means of the VLBI technique, has over the years allowed studies of Earth rotation dynamics to advance in ever-increasing precision, accuracy, and temporal resolution. A review will be presented on our understanding of the geophysical and climatic causes, or "excitations", for length-of-day change, polar motion, and nutations. These excitations sources come from mass transports that constantly take place in the Earth system comprised of the atmosphere, hydrosphere, cryosphere, lithosphere, mantle, and the cores. In this sense, together with other space geodetic measurements of time-variable gravity and geocenter motion, Earth rotation variations become a remote-sensing tool for the integral of all mass transports, providing valuable information about the latter on a wide range of spatial and temporal scales. Future prospects with respect to geophysical studies with even higher accuracy and resolution will be discussed.

  19. Medicare's prospective payment system: A critical appraisal

    PubMed Central

    Coulam, Robert F.; Gaumer, Gary L.

    1992-01-01

    Implementation of the Medicare prospective payment system (PPS) for hospital payment has produced major changes in the hospital industry and in the way hospital services are used by physicians and their patients. The substantial published literature that examines these changes is reviewed in this article. This literature suggests that most of the intended effects of PPS on costs and intensity of care have been realized. But the literature fails to answer fundamental questions about the effectiveness and equity of administered pricing as a policy tool for cost containment. The literature offers some hope that the worst fears about the effects of PPS on quality of care and the health of the hospital industry have not materialized. But because of data lags, the studies done to date seem to tell us more about the effects of the early, more generous period of PPS than about the opportunity costs of reducing hospital cost inflation. PMID:25372306

  20. Prospective of 68Ga-Radiopharmaceutical Development

    PubMed Central

    Velikyan, Irina

    2014-01-01

    Positron Emission Tomography (PET) experienced accelerated development and has become an established method for medical research and clinical routine diagnostics on patient individualized basis. Development and availability of new radiopharmaceuticals specific for particular diseases is one of the driving forces of the expansion of clinical PET. The future development of the 68Ga-radiopharmaceuticals must be put in the context of several aspects such as role of PET in nuclear medicine, unmet medical needs, identification of new biomarkers, targets and corresponding ligands, production and availability of 68Ga, automation of the radiopharmaceutical production, progress of positron emission tomography technologies and image analysis methodologies for improved quantitation accuracy, PET radiopharmaceutical regulations as well as advances in radiopharmaceutical chemistry. The review presents the prospects of the 68Ga-based radiopharmaceutical development on the basis of the current status of these aspects as well as wide range and variety of imaging agents. PMID:24396515

  1. Prospective and Pavlovian mechanisms in aversive behaviour

    PubMed Central

    Rigoli, Francesco; Pezzulo, Giovanni; Dolan, Raymond J.

    2016-01-01

    Studying aversive behaviour is critical for understanding negative emotions and associated psychopathologies. However a comprehensive picture of the mechanisms underlying aversion is lacking, with associative learning theories focusing on Pavlovian reactions and decision-making theoretic approaches on prospective functions. We propose a computational model of aversion that combines goal-directed and Pavlovian forms of control into a unifying framework in which their relative importance is regulated by factors such as threat distance and controllability. Using simulations, we test whether the model can reproduce available empirical findings and discuss its relevance to understanding factors underlying negative emotions such as fear and anxiety. Furthermore, the specific method used to construct the model permits a natural mapping from its components to brain structure and function. Our model provides a basis for a unifying account of aversion that can guide empirical and interventional study contexts. PMID:26539969

  2. Future Space Transportation Technology: Prospects and Priorities

    NASA Technical Reports Server (NTRS)

    Billie, Matt; Reed, Lisa; Harris, David

    2003-01-01

    The Transportation Working Group (TWG) was chartered by the NASA Exploration Team (NEXT) to conceptualize, define, and advocate within NASA the space transportation architectures and technologies required to enable the human and robotic exploration and development of space envisioned by the NEXT. In 2002, the NEXT tasked the TWG to assess exploration space transportation requirements versus current and prospective Earth-to-Orbit (ETO) and in-space transportation systems, technologies, and research, in order to identify investment gaps and recommend priorities. The result was a study now being incorporated into future planning by the NASA Space Architect and supporting organizations. This paper documents the process used to identify exploration space transportation investment gaps, as well as the group's recommendations for closing these gaps and prioritizing areas of future investment for NASA work on advanced propulsion systems.

  3. Detection prospects of the cosmic neutrino background

    NASA Astrophysics Data System (ADS)

    Li, Yu-Feng

    2015-04-01

    The existence of the cosmic neutrino background (CνB) is a fundamental prediction of the standard Big Bang cosmology. Although current cosmological probes provide indirect observational evidence, the direct detection of the CνB in a laboratory experiment is a great challenge to the present experimental techniques. We discuss the future prospects for the direct detection of the CνB, with the emphasis on the method of captures on beta-decaying nuclei and the PTOLEMY project. Other possibilities using the electron-capture (EC) decaying nuclei, the annihilation of extremely high-energy cosmic neutrinos (EHECνs) at the Z-resonance, and the atomic de-excitation method are also discussed in this review (talk given at the International Conference on Massive Neutrinos, Singapore, 9-13 February 2015).

  4. Detection Prospects of the Cosmic Neutrino Background

    NASA Astrophysics Data System (ADS)

    Li, Yu-Feng

    The existence of the cosmic neutrino background (CνB) is a fundamental prediction of the standard Big Bang cosmology. Although current cosmological probes provide indirect observational evidence, the direct detection of the CνB in a laboratory experiment is a great challenge to the present experimental techniques. We discuss the future prospects for the direct detection of the CνB, with the emphasis on the method of captures on beta-decaying nuclei and the PTOLEMY project. Other possibilities using the electron-capture (EC) decaying nuclei, the annihilation of extremely high-energy cosmic neutrinos (EHECνs) at the Z-resonance, and the atomic de-excitation method are also discussed in this review.

  5. Crisis in resources: a neurosurgical prospective.

    PubMed

    Ashkan, K; Edwards, R J; Bell, B A

    2001-08-01

    In the light of the recent recommendations of the Society of British Neurological Surgeons on safe neurosurgery, we prospectively audited the work load, availability and efficiency in the use of neurosurgical resources in our department over a 1-month period. There were a total of 130 admissions--70 emergency and 60 elective cases. Twenty-three patients referred as emergencies were denied admission, directly or indirectly, because of shortage of beds. Other emergency cases had to wait unacceptable long periods, up to 17 days, prior to admission for the same reason. For elective cases, there was a 33% cancellation rate due to lack of beds and competition with the emergency cases for the same resources. Overall bed occupancy rate exceeded 100%. We conclude that the current neurosurgical resources are inadequate and over-stretched leaving no safety margin. Neurosurgery as a core emergency service, therefore, should be given priority in NHS resource allocation. PMID:11599451

  6. Prospective and Pavlovian mechanisms in aversive behaviour.

    PubMed

    Rigoli, Francesco; Pezzulo, Giovanni; Dolan, Raymond J

    2016-01-01

    Studying aversive behaviour is critical for understanding negative emotions and associated psychopathologies. However a comprehensive picture of the mechanisms underlying aversion is lacking, with associative learning theories focusing on Pavlovian reactions and decision-making theoretic approaches on prospective functions. We propose a computational model of aversion that combines goal-directed and Pavlovian forms of control into a unifying framework in which their relative importance is regulated by factors such as threat distance and controllability. Using simulations, we test whether the model can reproduce available empirical findings and discuss its relevance to understanding factors underlying negative emotions such as fear and anxiety. Furthermore, the specific method used to construct the model permits a natural mapping from its components to brain structure and function. Our model provides a basis for a unifying account of aversion that can guide empirical and interventional study contexts. PMID:26539969

  7. Photoacoustic tomography: fundamentals, advances and prospects

    PubMed Central

    Yao, Junjie; Wang, Lihong V.

    2011-01-01

    Optical microscopy has been contributing to the development of life science for more than three centuries. However, due to strong optical scattering in tissue, its in vivo imaging ability has been restricted to studies at superficial depths. Advances in photoacoustic tomography (PAT) now allow multiscale imaging at depths from sub-millimeter to several centimeters, with spatial resolutions from sub-micrometer to sub-millimeter. Because of this high scalability and its unique optical absorption contrast, PAT is capable of performing anatomical, functional, molecular and fluid-dynamic imaging at various system levels, and is playing an increasingly important role in fundamental biological research and clinical practice. This Review discusses recent technical progress in PAT and presents corresponding applications. It ends with a discussion of several prospects and their technical challenges. PMID:22025335

  8. Gamma-ray spectroscopy - Requirements and prospects

    NASA Technical Reports Server (NTRS)

    Matteson, James L.

    1991-01-01

    The only previous space instrument which had sufficient spectral resolution and directionality for the resolution of astrophysical sources was the Gamma-Ray Spectrometer carried by HEAO-3. A broad variety of astrophysical investigations entail gamma-ray spectroscopy of E/Delta-E resolving power of the order of 500 at 1 MeV; it is presently argued that a sensitivity to narrow gamma-ray lines of a few millionths ph/sq cm, from about 10 keV to about 10 MeV, should typify the gamma-ray spectrometers of prospective missions. This performance is achievable with technology currently under development, and could be applied to the NASA's planned Nuclear Astrophysics Explorer.

  9. Laser ignited engines: progress, challenges and prospects.

    PubMed

    Dearden, Geoff; Shenton, Tom

    2013-11-01

    Laser ignition (LI) has been shown to offer many potential benefits compared to spark ignition (SI) for improving the performance of internal combustion (IC) engines. This paper outlines progress made in recent research on laser ignited IC engines, discusses the potential advantages and control opportunities and considers the challenges faced and prospects for its future implementation. An experimental research effort has been underway at the University of Liverpool (UoL) to extend the stratified speed/load operating region of the gasoline direct injection (GDI) engine through LI research, for which an overview of some of the approaches, testing and results to date are presented. These indicate how LI can be used to improve control of the engine for: leaner operation, reductions in emissions, lower idle speed and improved combustion stability. PMID:24514930

  10. Prospects for Breakthrough Propulsion From Physics

    NASA Technical Reports Server (NTRS)

    Millis, Marc G.

    2004-01-01

    "Space drives", "Warp drives", and "Wormholes:" these concepts may sound like science fiction, but they are being written about in reputable journals. To assess the implications of these emerging prospects for future spaceflight, NASA supported the Breakthrough Propulsion Physics Project from 1996 through 2002. This Project has three grand challenges: (1) Discover propulsion that eliminates the need for propellant; (2) Discover methods to achieve hyper-fast travel; and (3) Discover breakthrough methods to power spacecraft. Because these challenges are presumably far from fruition, and perhaps even impossible, a special emphasis is placed on selecting incremental and affordable research that addresses the critical issues behind these challenges. Of 16 incremental research tasks completed by the project and from other sponsors, about a third were found not to be viable, a quarter have clear opportunities for sequels, and the rest remain unresolved.

  11. Universal doomsday: analyzing our prospects for survival

    NASA Astrophysics Data System (ADS)

    Gerig, Austin; Olum, Ken D.; Vilenkin, Alexander

    2013-05-01

    Given a sufficiently large universe, numerous civilizations almost surely exist. Some of these civilizations will be short-lived and die out relatively early in their development, i.e., before having the chance to spread to other planets. Others will be long-lived, potentially colonizing their galaxy and becoming enormous in size. What fraction of civilizations in the universe are long-lived? The ``universal doomsday'' argument states that long-lived civilizations must be rare because if they were not, we should find ourselves living in one. Furthermore, because long-lived civilizations are rare, our civilization's prospects for long-term survival are poor. Here, we develop the formalism required for universal doomsday calculations and show that while the argument has some force, our future is not as gloomy as the traditional doomsday argument would suggest, at least when the number of early existential threats is small.

  12. Prospective applications of optical quantum memories

    NASA Astrophysics Data System (ADS)

    Bussières, Félix; Sangouard, Nicolas; Afzelius, Mikael; de Riedmatten, Hugues; Simon, Christoph; Tittel, Wolfgang

    2013-10-01

    An optical quantum memory can be broadly defined as a system capable of storing a quantum state through interaction with light at optical frequencies. During the last decade, intense research was devoted to their development, mostly with the aim of fulfilling the requirements of their first two applications, namely quantum repeaters and linear-optical quantum computation. A better understanding of those requirements then motivated several different experimental approaches. Along the way, other exciting applications emerged, such as as quantum metrology, single-photon detection, tests of the foundations of quantum physics, device-independent quantum information processing and nonlinear processing of quantum information. Here we review several prospective applications of optical quantum memories, as well as recent experimental achievements pertaining to these applications. This review highlights that optical quantum memories have become essential for the development of optical quantum information processing.

  13. Prospects of High Energy Laboratory Astrophysics

    SciTech Connect

    Ng, J.S.T.; Chen, P.; /SLAC

    2006-09-21

    Ultra high energy cosmic rays (UHECR) have been observed but their sources and production mechanisms are yet to be understood. We envision a laboratory astrophysics program that will contribute to the understanding of cosmic accelerators with efforts to: (1) test and calibrate UHECR observational techniques, and (2) elucidate the underlying physics of cosmic acceleration through laboratory experiments and computer simulations. Innovative experiments belonging to the first category have already been done at the SLAC FFTB. Results on air fluorescence yields from the FLASH experiment are reviewed. Proposed future accelerator facilities can provided unprecedented high-energy-densities in a regime relevant to cosmic acceleration studies and accessible in a terrestrial environment for the first time. We review recent simulation studies of nonlinear plasma dynamics that could give rise to cosmic acceleration, and discuss prospects for experimental investigation of the underlying mechanisms.

  14. Prospective study on nutrition transition in China.

    PubMed

    Zhai, Fengying; Wang, Huijun; Du, Shufa; He, Yuna; Wang, Zhihong; Ge, Keyou; Popkin, Barry M

    2009-05-01

    The aim of the prospective study reported here was to examine the effects of social and economic transformation on dietary patterns and nutritional status in China. The study began in 1989 and continued with follow-ups in 1991, 1993, 1997, 2000, and 2004. A total of 5000 subjects aged 18-45 years from 4280 households in nine provinces were included. Weighed records and three consecutive 24-h recalls were used. Over the study period, average consumption of all animal foods except milk increased, while cereal intake decreased. The proportion of animal protein and fat as a percentage of energy also increased. However, vitamin A and calcium intake did not increase and remained low. Child height and weight increased while undernutrition decreased and overweight increased. The results indicate that rapid changes in dietary pattern are associated with economic reforms in China. PMID:19453679

  15. The statistical parton distributions: status and prospects

    NASA Astrophysics Data System (ADS)

    Bourrely, C.; Soffer, J.; Buccella, F.

    2005-06-01

    New experimental results on polarized structure functions, cross sections for e^{±}p neutral and charge current reactions and ν (bar{ν}) charge current on isoscalar targets are compared with predictions using the statistical parton distributions, which were previously determined. New data on cross sections for Drell-Yan processes, single-jet data in pbar{p} collisions and inclusive π^0 production data in pp collisions are also compared with predictions from this theoretical approach. The good agreement which we find with all these tests against experiment strengthens our opinion on the relevance of the role of quantum statistics for parton distributions. We will also discuss the prospects of this physical framework.

  16. Investing in Prospective Cohorts for Etiologic Study of Occupational Exposures

    PubMed Central

    Blair, A.; Hines, C.J.; Thomas, K.W.; Alavanja, M.C.R.; Beane Freeman, L.E.; Hoppin, J.A.; Kamel, F.; Lynch, C.F.; Lubin, J.H.; Silverman, D.T.; Whelan, E.; Zahm, S. H.; Sandler, D. P.

    2015-01-01

    Prospective cohorts have played a major role in understanding the contribution of diet, physical activity, medical conditions, and genes to the development of many diseases, but have not been widely used for occupational exposures. Studies in agriculture are an exception. We draw upon our experience using this design to study agricultural workers to identify conditions that might foster use of prospective cohorts to study other occupational settings. Prospective cohort studies are perceived by many as the strongest epidemiologic design. It allows updating of information on exposure and other factors, collection of biologic samples before disease diagnosis for biomarker studies, assessment of effect modification by genes, lifestyle, and other occupational exposures, and evaluation of a wide range of health outcomes. Increased use of prospective cohorts would be beneficial in identifying hazardous exposures in the workplace. Occupational epidemiologists should seek opportunities to initiate prospective cohorts to investigate high priority, occupational exposures. PMID:25603935

  17. 42 CFR 413.345 - Publication of Federal prospective payment rates.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... RENAL DISEASE SERVICES; OPTIONAL PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED NURSING FACILITIES Prospective Payment for Skilled Nursing Facilities § 413.345 Publication of Federal prospective payment rates... Register. This information includes the standardized Federal rates, the resident classification system...

  18. 42 CFR 413.345 - Publication of Federal prospective payment rates.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... RENAL DISEASE SERVICES; OPTIONAL PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED NURSING FACILITIES Prospective Payment for Skilled Nursing Facilities § 413.345 Publication of Federal prospective payment rates... Register. This information includes the standardized Federal rates, the resident classification system...

  19. 42 CFR 413.345 - Publication of Federal prospective payment rates.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... RENAL DISEASE SERVICES; OPTIONAL PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED NURSING FACILITIES Prospective Payment for Skilled Nursing Facilities § 413.345 Publication of Federal prospective payment rates... Register. This information includes the standardized Federal rates, the resident classification system...

  20. 42 CFR 413.345 - Publication of Federal prospective payment rates.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... RENAL DISEASE SERVICES; OPTIONAL PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED NURSING FACILITIES Prospective Payment for Skilled Nursing Facilities § 413.345 Publication of Federal prospective payment rates... Register. This information includes the standardized Federal rates, the resident classification system...

  1. Rehabilitation costs: implications for prospective payment.

    PubMed Central

    Schlenker, R E; Kramer, A M; Hrincevich, C A; Eilertsen, T B

    1997-01-01

    OBJECTIVE: To obtain information relevant to development of prospective payment for Medicare rehabilitation facilities (RFs) and skilled nursing facilities (SNFs): compares service utilization, length of stay (LOS), case mix, and resource consumption for Medicare patients receiving postacute institutional rehabilitation care. DATA SOURCES/STUDY SETTING: Longitudinal patient-level and related facility-level data on Medicare hip fracture (n = 513) and stroke (n = 483) patients admitted in 1991-1994 to a sample of 27 RFs and 65 SNFs in urban areas in 17 states. STUDY DESIGN: For each condition, two-group RF-SNF comparisons were made. Regression analysis was used to adjust RF-SNF differences in resource consumption per stay for patient condition (case mix) and other factors, since random assignment was not possible. DATA COLLECTION/EXTRACTION METHODS: Providers at each facility were trained to collect patient case-mix and service utilization information. Secondary data also were obtained. PRINCIPAL FINDINGS: RF patients had shorter LOS, fewer total nursing hours (but more skilled nursing hours), and more ancillary hours than SNF patients. After adjustment, ancillary resource consumption per stay remained substantially higher for RF than SNF patients, particularly for stroke. The adjusted nursing resource consumption differences were smaller than the ancillary differences and not statistically significant for hip fracture. Supplemental outcome findings suggested minimal differences for hip fracture patients but better outcomes for RF than SNF stroke patients. CONCLUSIONS: Much can be gained from an integrated approach to developing prospective payment for RFs and SNFs. In that context, consideration of condition-specific per-stay payment methods applicable to both settings appears warranted. PMID:9402906

  2. Abdominal Lipectomy: A Prospective Outcomes Study

    PubMed Central

    Semer, Nadine B; Ho, Wan C; Mills, Sharrie; Rajashekara, BM; Taylor, Jason R; Trung, Nguyen B; Young, Henry; Kivuls, Juris

    2008-01-01

    Context/objective: Abdominal lipectomy is performed by plastic surgeons to provide symptomatic, functional, and cosmetic relief for patients with excess abdominal tissue. However, there are few clinical outcome studies looking at the utility of this procedure: this is the first prospective oucomes study. Design: Patients who underwent abdominal lipectomy at the Bellflower Medical Center during a 12-month period (September 2004 through September 2005) were prospectively studied. Data were collected at the preoperative visit, during surgery, and at the one-week, one-month, and six-month postoperative visits. Outcome measures: Complications, both major (requiring rehospitalization or reoperation) and minor (requiring local outpatient care) were identified. To evaluate the impact on our patients' perceived health and well-being as well as body image, we administered the Short Form–36 Health Survey (SF-36) and the Multidimensional Body-Self Relations Questionnaire (MBSRQ) to participants at their preoperative and six-month postoperative visits. Results: For the 72 patients enrolled in the study, the postoperative major complication rate was 5.6% (four patients) and the minor complication rate was 27.8% (20 patients); 98.3% were happy to have had the surgery. Two components of the MBSRQ, feelings of attractiveness and body area satisfaction, showed significant improvement (p < 0.0001 for each) at six-month postoperative testing. No component of the SF-36 reached statistical significance between pre- and postoperative testing. Conclusion: Because the complication rate for cosmetic abdominoplasty in our study did not significantly differ from rates reported for other studies, and given our data on perceived patient satisfaction and improvement in outcomes, our study validates the utility of abdominal lipectomy for patients with symptomatic lower abdominal pannus. PMID:21364808

  3. Fluoride glass fibers: applications and prospects

    NASA Astrophysics Data System (ADS)

    Poulain, Marcel

    1998-09-01

    Fluoride glass fibers have been intensively developed for the last 20 years. A major effort was devoted to the fabrication of low loss fibers for repeaterless long haul telecommunications. This step which ended in the late eighties provided the basic technology for the manufacturing of multimode and single mode fibers with minimum losses below 10 dB/km. Such fibers area now used for various passive applications requiring the handling of IR signal. In this respect, fluoride fibers are complementary to silica fibers when wavelength exceeds 2 micrometers . Some practical set ups are operating for IR imaging, remote spectroscopy and thermometry. Special fibers such as polarization maintaining fibers have been developed for interferometric astronomy, which could also apply to sensors. UV transmission has still to be developed. Laser power delivery is another field of application for these fibers. YAG:Er laser at 2.9 micrometers attracts a growing interest for medical applications, ophthalmology and dentistry, while prospects for CO laser are positive. Active fibers are based on rare earth doped single mode fibers. They lead to the definition of numerous new laser lines and emphasized the potential of up conversion for the generation of visible light using IR pumping laser diodes. High power output has been achieved in the blue and the red light, which open prospects for compact and all solid state fiber lasers for a wide range of applications, from displays to medical uses. Optical amplification makes another field of R and D centered on telecommunication needs. Pr3+ doped fluoride fibers have been used for the 1.3 micrometers band, and Er based fluoride fiber amplifiers exhibit wider and flatter gain than those made from silica. Optical amplification may be implemented at other wavelengths for more general purposes.

  4. High Energy Polarization of Blazars: Detection Prospects

    NASA Astrophysics Data System (ADS)

    Chakraborty, N.; Pavlidou, V.; Fields, B. D.

    2015-01-01

    Emission from blazar jets in the ultraviolet, optical, and infrared is polarized. If these low-energy photons were inverse-Compton scattered, the upscattered high-energy photons retain a fraction of the polarization. Current and future X-ray and gamma-ray polarimeters such as INTEGRAL-SPI, PoGOLITE, X-Calibur, Gamma-Ray Burst Polarimeter, GEMS-like missions, ASTRO-H, and POLARIX have the potential to discover polarized X-rays and gamma-rays from blazar jets for the first time. Detection of such polarization will open a qualitatively new window into high-energy blazar emission; actual measurements of polarization degree and angle will quantitatively test theories of jet emission mechanisms. We examine the detection prospects of blazars by these polarimetry missions using examples of 3C 279, PKS 1510-089, and 3C 454.3, bright sources with relatively high degrees of low-energy polarization. We conclude that while balloon polarimeters will be challenged to detect blazars within reasonable observational times (with X-Calibur offering the most promising prospects), space-based missions should detect the brightest blazars for polarization fractions down to a few percent. Typical flaring activity of blazars could boost the overall number of polarimetric detections by nearly a factor of five to six purely accounting for flux increase of the brightest of the comprehensive, all-sky, Fermi-LAT blazar distribution. The instantaneous increase in the number of detections is approximately a factor of two, assuming a duty cycle of 20% for every source. The detectability of particular blazars may be reduced if variations in the flux and polarization fraction are anticorrelated. Simultaneous use of variability and polarization trends could guide the selection of blazars for high-energy polarimetric observations.

  5. HIGH ENERGY POLARIZATION OF BLAZARS: DETECTION PROSPECTS

    SciTech Connect

    Chakraborty, N.; Pavlidou, V.; Fields, B. D.

    2015-01-01

    Emission from blazar jets in the ultraviolet, optical, and infrared is polarized. If these low-energy photons were inverse-Compton scattered, the upscattered high-energy photons retain a fraction of the polarization. Current and future X-ray and gamma-ray polarimeters such as INTEGRAL-SPI, PoGOLITE, X-Calibur, Gamma-Ray Burst Polarimeter, GEMS-like missions, ASTRO-H, and POLARIX have the potential to discover polarized X-rays and gamma-rays from blazar jets for the first time. Detection of such polarization will open a qualitatively new window into high-energy blazar emission; actual measurements of polarization degree and angle will quantitatively test theories of jet emission mechanisms. We examine the detection prospects of blazars by these polarimetry missions using examples of 3C 279, PKS 1510-089, and 3C 454.3, bright sources with relatively high degrees of low-energy polarization. We conclude that while balloon polarimeters will be challenged to detect blazars within reasonable observational times (with X-Calibur offering the most promising prospects), space-based missions should detect the brightest blazars for polarization fractions down to a few percent. Typical flaring activity of blazars could boost the overall number of polarimetric detections by nearly a factor of five to six purely accounting for flux increase of the brightest of the comprehensive, all-sky, Fermi-LAT blazar distribution. The instantaneous increase in the number of detections is approximately a factor of two, assuming a duty cycle of 20% for every source. The detectability of particular blazars may be reduced if variations in the flux and polarization fraction are anticorrelated. Simultaneous use of variability and polarization trends could guide the selection of blazars for high-energy polarimetric observations.

  6. Final report. Paducah Gaseous Diffusion Plant PCB sediment survey: Big Bayou Creek and Little Bayou Creek, Paducah, Kentucky

    SciTech Connect

    1996-12-01

    Laboratory analysis of collected samples along drainage features at PGDP. Report documents levels of PCB contamination and considers locations of contamination and known releases to theorize probable sources to further investigate.

  7. 42 CFR 413.304 - Eligibility for prospectively determined payment rates.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...-STAGE RENAL DISEASE SERVICES; OPTIONAL PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED NURSING FACILITIES Prospectively Determined Payment Rates for Low-Volume Skilled Nursing Facilities, for...

  8. 42 CFR 413.337 - Methodology for calculating the prospective payment rates.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...-STAGE RENAL DISEASE SERVICES; OPTIONAL PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED NURSING FACILITIES Prospective Payment for Skilled Nursing Facilities § 413.337 Methodology for calculating...

  9. Random forest predictive modeling of mineral prospectivity with small number of prospects and data with missing values in Abra (Philippines)

    NASA Astrophysics Data System (ADS)

    Carranza, Emmanuel John M.; Laborte, Alice G.

    2015-01-01

    Machine learning methods that have been used in data-driven predictive modeling of mineral prospectivity (e.g., artificial neural networks) invariably require large number of training prospect/locations and are unable to handle missing values in certain evidential data. The Random Forests (RF) algorithm, which is a machine learning method, has recently been applied to data-driven predictive mapping of mineral prospectivity, and so it is instructive to further study its efficacy in this particular field. This case study, carried out using data from Abra (Philippines), examines (a) if RF modeling can be used for data-driven modeling of mineral prospectivity in areas with a few (i.e., <20) mineral occurrences and (b) if RF modeling can handle evidential data with missing values. We found that RF modeling outperforms weights-of-evidence (WofE) modeling of porphyry-Cu prospectivity in the Abra area, where 12 porphyry-Cu prospects are known to exist. Moreover, just like WofE modeling, RF modeling allows analysis of the spatial associations of known prospects with individual layers of evidential data. Furthermore, RF modeling can handle missing values in evidential data through an RF-based imputation technique whereas in WofE modeling values are simply represented by zero weights. Therefore, the RF algorithm is potentially more useful than existing methods that are currently used for data-driven predictive mapping of mineral prospectivity. In particular, it is not a purely black-box method like artificial neural networks in the context of data-driven predictive modeling of mineral prospectivity. However, further testing of the method in other areas with a few mineral occurrences is needed to fully investigate its usefulness in data-driven predictive modeling of mineral prospectivity.

  10. A study of geothermal prospects in the western United States

    NASA Technical Reports Server (NTRS)

    1975-01-01

    The commercial development potential of 13 underdeveloped geothermal prospects in the Western United States was examined, and the prospects were ranked in order of relative potential for development on the basis of investment considerations. The following were considered in the ranking: geotechnical and engineering data, energy market accessibility, administrative constraints, and environmental and socio-economic factors. The primary ranking criterion is the unit cost of energy production expected from each prospect. Secondary criteria are administrative constraints, environmental factors and the quality of the geotechnical data.

  11. Innate Immunity and BK Virus: Prospective Strategies.

    PubMed

    Kariminik, Ashraf; Yaghobi, Ramin; Dabiri, Shahriar

    2016-03-01

    Recent information demonstrated that BK virus reactivation is a dominant complication after kidney transplantation, which occurs because of immunosuppression. BK virus reactivation is the main reason of transplanted kidney losing. Immune response against BK virus is the major inhibitor of the virus reactivation. Therefore, improving our knowledge regarding the main parameters that fight against BK viruses can shed light on to direct new treatment strategies to suppress BK infection. Innate immunity consists of numerous cell systems and also soluble molecules, which not only suppress virus replication, but also activate adaptive immunity to eradicate the infection. Additionally, it appears that immune responses against reactivated BK virus are the main reasons for induction of BK virus-associated nephropathy (BKAN). Thus, improving our knowledge regarding the parameters and detailed mechanisms of innate immunity and also the status of innate immunity of the patients with BK virus reactivation and its complications can introduce new prospective strategies to either prevent or as therapy of the complication. Therefore, this review was aimed to collate the most recent data regarding the roles played by innate immunity against BK virus and also the status of innate immunity in the patients with reactivation BK virus and BKAN. PMID:26752693

  12. PROSPECTS FOR THE DETECTION OF INTERSTELLAR CYANOVINYLIDENE

    SciTech Connect

    Kolos, Robert; Gronowski, Marcin; Dobrowolski, Jan Cz.

    2009-08-10

    Prospects for the presence and detection of interstellar cyanovinylidene, CC(H)CN, a Y-shaped isomer of cyanoacetylene, are discussed. It is proposed that CC(H)CN can arise in interstellar clouds as one of the HC{sub 3}NH{sup +} + e {sup -} dissociative recombination products, by rearrangements of the neutral chain radical HC{sub 3}NH into branched species HCCC(H)N, CC(H)C(H)N, and/or HCC(H)CN, and by the subsequent elimination of a hydrogen atom. It is deduced that the abundance of cyanovinylidene in molecular clouds should be confined between the abundances of its chain isomers HNCCC and HCNCC. Quantum chemical predictions regarding cyanovinylidene geometry, ground-state rotational constants, centrifugal distortion constants, spin-orbit coupling, IR absorption spectroscopy, and electric dipole moment are given. The spectroscopically observed molecules formyl cyanide, NC{sub 2}(H)O, and propynal, HC{sub 3}(H)O, with structures qualitatively resembling cyanovinylidene, served to prove the adequacy of the calculational procedures employed.

  13. Electrochemical metallization memories—fundamentals, applications, prospects

    NASA Astrophysics Data System (ADS)

    Valov, Ilia; Waser, Rainer; Jameson, John R.; Kozicki, Michael N.

    2011-06-01

    This review focuses on electrochemical metallization memory cells (ECM), highlighting their advantages as the next generation memories. In a brief introduction, the basic switching mechanism of ECM cells is described and the historical development is sketched. In a second part, the full spectra of materials and material combinations used for memory device prototypes and for dedicated studies are presented. In a third part, the specific thermodynamics and kinetics of nanosized electrochemical cells are described. The overlapping of the space charge layers is found to be most relevant for the cell properties at rest. The major factors determining the functionality of the ECM cells are the electrode reaction and the transport kinetics. Depending on electrode and/or electrolyte material electron transfer, electro-crystallization or slow diffusion under strong electric fields can be rate determining. In the fourth part, the major device characteristics of ECM cells are explained. Emphasis is placed on switching speed, forming and SET/RESET voltage, RON to ROFF ratio, endurance and retention, and scaling potentials. In the last part, circuit design aspects of ECM arrays are discussed, including the pros and cons of active and passive arrays. In the case of passive arrays, the fundamental sneak path problem is described and as well as a possible solution by two anti-serial (complementary) interconnected resistive switches per cell. Furthermore, the prospects of ECM with regard to further scalability and the ability for multi-bit data storage are addressed.

  14. eROSITA: Status and Scientific Prospects

    NASA Astrophysics Data System (ADS)

    Becker, Werner; eROSITA Team

    2016-06-01

    eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the core instrument on the Russian Spektrum-Roentgen-Gamma (SRG) mission which is currently scheduled for launch in 2017. eROSITA will perform a deep survey of the entire X-ray sky. In the soft band (0.5-2 keV), it will be about 30 times more sensitive than ROSAT, while in the hard band (2-8 keV) it will provide the first ever true imaging survey of the sky. The design driving science is the detection of large samples of galaxy clusters to redshifts z > 1 in order to study thelarge scale structure in the Universe and test cosmological models including Dark Energy. In addition, eROSITA is expected to yield a sample of a few million AGN, including obscured objects, revolutionizing our view of the evolution of supermassive black holes. The survey will also provide new insights into a wide range of astrophysical phenomena, including neutron stars and pulsars, X-ray binaries, activestars and diffuse emission from supernova remnants. The talk reports on the status of eROSITA and its scientific prospects.

  15. Uterus transplantation: current progress and future prospects

    PubMed Central

    Johannesson, Liza; Järvholm, Stina

    2016-01-01

    Even if reproductive medicine has been remarkably successful during the past few decades, with the introduction of in vitro fertilization in the late 1970s and intracytoplasmic sperm injection in the early 1990s, it has been repeatedly mocked by infertility due to an absolute uterine factor. No treatment has been available for the women suffering from an absent or dysfunctional uterus, in terms of carrying a pregnancy. Approximately one in 500 women suffer from absolute uterine infertility, and the option so far to become a mother has been to either adopt or utilize gestational surrogacy. As of today, a total of eleven cases of human uterus transplantations have been reported worldwide, conducted in three different countries. The results of these initial experimental cases far exceed what might be expected of a novel surgical method. Many more uterus transplantations are to be expected in the near future, as other research teams’ preparations are being ready to be put into clinical practice. In this review, we summarize the current worldwide experience of uterus transplantation as a treatment of absolute uterine factor infertility and the future prospects of human uterus transplantation. PMID:26917976

  16. Plasmon modes in graphene: status and prospect.

    PubMed

    Politano, Antonio; Chiarello, Gennaro

    2014-10-01

    Plasmons in graphene have unusual properties and offer promising prospects for plasmonic applications covering a wide frequency range, ranging from terahertz up to the visible. Plasmon modes have been recently studied in both free-standing and supported graphene. Here, we review plasmons in graphene with particular emphasis on plasmonic excitations in epitaxial graphene and on the influence of the underlying substrate on the screening processes. Although the theoretical comprehension of plasmons in supported graphene is still incomplete, several experimental results provide clues regarding the nature of plasmonic excitations in graphene on metals and semiconductors. Plasmon in graphene can be tuned by chemical doping and gating potentials. We show through selected examples that the adsorbates can be used to tune the plasmon frequency, while the intercalation of chemical species allows the decoupling of the graphene sheet from the substrate to recover the plasmon dispersion of pristine graphene. Finally, we also report intriguing effects due to many-body interaction, such as the excitations generated by electron-electron coupling (magnetoplasmons) and the composite modes arising from the coupling of plasmons with phonons and with charge carriers. PMID:25130215

  17. Prospective barrier coatings for superconducting cables

    NASA Astrophysics Data System (ADS)

    Ipatov, Y.; Dolgosheev, P.; Sytnikov, V.

    1997-07-01

    Known and prospective types of chromium coatings, used in the production of superconducting `cable-in-conduit' conductors designed for the ITER and other projects, are considered. The influence of the technological conditions during the galvanic plating of hard, grey, black and combined chromium coatings in various electrolytes and the annealing conditions in air and in vacuum on the contact electrical resistance of copper and superconducting wire at room temperature and 4.2 K as well as on other physical properties, e.g. resistance to abrasion, elasticity and thickness of the coatings, is investigated. Black oxide - chromium coatings and combined chromium coatings, containing oxides of chromium and a number of other metals, ensure the possibility of a significant increase of contact resistance as well as its regulation in a broad range of values in comparison with hard chromium. The results of the present work and also an independent investigation of the cable containing the strand, manufactured in JSC `VNIIKP', allow us to propose the oxide - chromium coating as a barrier layer for multistrand superconducting cables.

  18. Scintillator Development for the PROSPECT Experiment

    NASA Astrophysics Data System (ADS)

    Yeh, Minfang

    2014-03-01

    Doped scintillator is the target material of choice for antineutrino detection as it utilizes the time-delayed coincidence signature of the positron annihilation and neutron capture resulting from the Inverse Beta Decay (IBD) interaction. Additionally, the multiple gamma rays or heavy ions emitted after neutron capture on either Gd or 6Li respectively provide a distinct signal for the identification of antineutrino events and therefore significantly enhance accidental background reduction. The choice of scintillator and dopant depends on the detector requirements and scintillator performance criteria. Both Gd and 6Li doped scintillators have been used in past reactor antineutrino experiments such as Double Chooz, Daya Bay, RENO, and Bugey3 and are currently under investigation by the PROSPECT collaboration. Their properties in terms of light yield, optical transparency, chemical stability and background rejection efficiency using Pulse Shape Discrimination (PSD) will be reported. Research sponsored by the U.S. Department of Energy, Office of Nuclear Physics and Office of High Energy Physics, under contract with Brookhaven National Laboratory-Brookhaven Science Associates.

  19. Prospective safety performance evaluation on construction sites.

    PubMed

    Wu, Xianguo; Liu, Qian; Zhang, Limao; Skibniewski, Miroslaw J; Wang, Yanhong

    2015-05-01

    This paper presents a systematic Structural Equation Modeling (SEM) based approach for Prospective Safety Performance Evaluation (PSPE) on construction sites, with causal relationships and interactions between enablers and the goals of PSPE taken into account. According to a sample of 450 valid questionnaire surveys from 30 Chinese construction enterprises, a SEM model with 26 items included for PSPE in the context of Chinese construction industry is established and then verified through the goodness-of-fit test. Three typical types of construction enterprises, namely the state-owned enterprise, private enterprise and Sino-foreign joint venture, are selected as samples to measure the level of safety performance given the enterprise scale, ownership and business strategy are different. Results provide a full understanding of safety performance practice in the construction industry, and indicate that the level of overall safety performance situation on working sites is rated at least a level of III (Fair) or above. This phenomenon can be explained that the construction industry has gradually matured with the norms, and construction enterprises should improve the level of safety performance as not to be eliminated from the government-led construction industry. The differences existing in the safety performance practice regarding different construction enterprise categories are compared and analyzed according to evaluation results. This research provides insights into cause-effect relationships among safety performance factors and goals, which, in turn, can facilitate the improvement of high safety performance in the construction industry. PMID:25746166

  20. Prospects for carbon capture and storage technologies

    SciTech Connect

    Soren Anderson; Richard Newell

    2003-01-15

    Carbon capture and storage (CCS) technologies remove carbon dioxide from flue gases for storage in geologic formations or the ocean. The study found that CCS is technically feasible and economically attractive within the range of carbon policies discussed domestically and internationally. Current costs are about $200 to $250 per ton of carbon, although costs are sensitive to fuel prices and other assumptions and could be reduced significantly through technical improvements. Near-term prospects favor CCS for certain industrial sources and electric power plants, with storage in depleted oil and gas reservoirs. Deep aquifers may provide an attractive longer-term storage option, whereas ocean storage poses greater technical and environmental uncertainty. Vast quantities of economically recoverable fossil fuels, sizable political obstacles to their abandonment, and inherent delay associated with developing alternative energy sources suggest that CCS should be seriously considered in the portfolio of options for addressing climate change, alongside energy efficiency and carbon-free energy. 61 refs., 5 figs., 5 tabs.

  1. Implementing prospective budgeting for Dutch sickness funds.

    PubMed

    Okma, K G; Poelert, J D

    2001-06-01

    Most if not all social policies entail redistribution of scarce public resources from central government to regional and local authorities, to individual citizens or non-government agencies. Governments use a wide variety of instruments to allocate public funds, including direct state provision of subsidies and goods and services, setting budgets at different levels, and regulation of social insurance schemes. Most industrialised countries have developed budget models based on implicit or explicit allocation criteria. Governments usually start by determining global budgets for an entire category of public spending and then specifying the amounts allocated for categories of spending, and next, the budgets for individual agencies. Within such a 'cascading' model, the lower level budgets may be more controversial than the global budgets, as they directly affect the amounts available to individual actors in the system, e.g. hospitals or health insurance agencies. Setting budgets not only shifts decision-making authority but also financial risks from the central government to decentralised actors. The introduction of the prospective budgeting model for the Dutch sickness funds illustrates why determining budgets is not merely a matter of choosing objective allocation criteria, but also, of interaction between state and stakeholders. In the typical Dutch neocorporatist policy arena, where organised interests share responsibilities with government for the shaping and implementation of social policies, the health insurance agencies actively participated in the development of the budget model. PMID:11420806

  2. Manned interplanetary missions: prospective medical problems.

    PubMed

    Grigoriev, A I; Svetaylo, E N; Egorov, A D

    1998-12-01

    The present review aimed to suggest approaches to prospective medical problems related to the health maintenance of space crews during future manned interplanetary, particularly Martian, missions up to 2-3 years with a possible stay on a planet with gravity different from that on Earth. The approaches are based on knowledge so far obtained from our analysis of the medical support of long-term orbital flights up to one year, as well as on the consideration of specific conditions of interplanetary missions. These specific conditions include not only long-term exposure to microgravity, but also a prolonged stay of unpredictable duration (2-3 years) on board a spacecraft or on a planet without direct contact with Earth, and living in a team with a risk of psychological incompatibility and the impossibility of an urgent return to Earth. These conditions necessitate a highly trained medical person in the crew, diagnostic tools and equipment, psychophysiological support, countermeasures, as well as the means for urgent, including surgical, treatment on board a spacecraft or on a planet. In this review, the discussion was focused on the following predictable medical problems during an interplanetary mission; 1) unfavorable effects of prolonged exposure to microgravity, 2) specific problems related to Martian missions, 3) medical monitoring, 4) countermeasures, 5) psychophysiological support and 6) the medical care system. PMID:11542693

  3. Reefal petroleum prospects possible in Pakistan

    SciTech Connect

    Quadri, V.N.; Quadri, S.M.G.J.

    1996-03-25

    Carbonate buildups including reefs and banks have proven to be prolific hydrocarbon reservoirs in the US, Canada, Mexico, North Africa, Southeast Asia, and the Middle East. Seismic interpretation, particularly of high quality marine data, and geological analyses, including petrographic studies of selected formations, reveal a broad spectrum of possible reefal prospects in formations of different ages in Pakistan. However, the region with good seismic that provides good recognition of possible reefal buildups remains to date devoid of well confirmation. Oil and Gas Development Corp. of Pakistan formed the technical services department in 1976 for a systematic scientific review of all exploration data and basin analysis. In 1985 this department was renamed offshore department, with responsibility for all offshore exploration. This article is based on the department`s work in collaboration with geoscientists from Russia, the US, Norway, and Canada covering the area shown. Four major types of carbonate buildups, easily recognized from seismic interpretation, include: barrier buildups that are linear with relatively deep water on both sides during deposition; pinnacle buildups that are roughly equidimensional and were surrounded by deep water during deposition; shelf margin buildups that are linear with deep water on one side and shallow water on the other; and patch buildups that form in shallow water either in close proximity to shelf margins, or over broad shallow seas.

  4. Uterus transplantation: current progress and future prospects.

    PubMed

    Johannesson, Liza; Järvholm, Stina

    2016-01-01

    Even if reproductive medicine has been remarkably successful during the past few decades, with the introduction of in vitro fertilization in the late 1970s and intracytoplasmic sperm injection in the early 1990s, it has been repeatedly mocked by infertility due to an absolute uterine factor. No treatment has been available for the women suffering from an absent or dysfunctional uterus, in terms of carrying a pregnancy. Approximately one in 500 women suffer from absolute uterine infertility, and the option so far to become a mother has been to either adopt or utilize gestational surrogacy. As of today, a total of eleven cases of human uterus transplantations have been reported worldwide, conducted in three different countries. The results of these initial experimental cases far exceed what might be expected of a novel surgical method. Many more uterus transplantations are to be expected in the near future, as other research teams' preparations are being ready to be put into clinical practice. In this review, we summarize the current worldwide experience of uterus transplantation as a treatment of absolute uterine factor infertility and the future prospects of human uterus transplantation. PMID:26917976

  5. Superwarfarin poisoning in children: a prospective study.

    PubMed

    Smolinske, S C; Scherger, D L; Kearns, P S; Wruk, K M; Kulig, K W; Rumack, B H

    1989-09-01

    This prospective study was undertaken to determine the incidence, severity, time of onset, and duration of coagulopathy in children following accidental ingestion of long-acting anticoagulant rodenticides, often called "superwarfarins." Of 110 children, who ingested superwarfarins and in whom one or more prothrombin time values were obtained, 8 had a prothrombin time ratio (patient to control) of greater than or equal to 1.2, indicative of anticoagulation. Prothrombin time values obtained 48 hours after ingestion were more likely to be prolonged (6/34, 17.6%) than values obtained 24 hours after ingestion (2/104, 1.9%) (P less than .005). The occurrence of an abnormal prothrombin time could not be predicted based on the history of amount ingested or on the presence of the characteristic green-blue product dye in or around the child's mouth. Acute toxicity was evidenced by transient abdominal pain, vomiting, and heme positive stools in 2 patients. The duration of prothrombin time prolongation could not be determined because of the few values obtained after 48 hours. To detect all possible abnormal prothrombin time values, 24- and 48-hour determinations are recommended after a child has ingested a superwarfarin. PMID:2771552

  6. Ion cyclotron emission studies: Retrospects and prospects

    NASA Astrophysics Data System (ADS)

    Gorelenkov, N. N.

    2016-05-01

    Ion cyclotron emission (ICE) studies emerged in part from the papers by A.B. Mikhailovskii published in the 1970s. Among the discussed subjects were electromagnetic compressional Alfvénic cyclotron instabilities with the linear growth rate √ {n_α /n_e } driven by fusion products, -particles which draw a lot of attention to energetic particle physics. The theory of ICE excited by energetic particles was significantly advanced at the end of the 20th century motivated by first DT experiments on TFTR and subsequent JET experimental studies which we highlight. More recently ICE theory was advanced by detailed theoretical and experimental studies on spherical torus (ST) fusion devices where the instability signals previously indistinguishable in high aspect ratio tokamaks due to high toroidal magnetic field became the subjects of experiments. We discuss further prospects of ICE theory applications for future burning plasma (BP) experiments such as those to be conducted in ITER device in France, where neutron and gamma rays escaping the plasma create extremely challenging conditions fusion alpha particle diagnostics.

  7. The Leyden uranium prospect, Jefferson County, Colorado

    USGS Publications Warehouse

    Gott, Garland B.

    1950-01-01

    The Leyden uranium prospect is in sec. 28, T, 2 S., R. 70 W, Jefferson County, Cplo, Examination of the property was made in February 1950. Uranium was first reported in this locality in 1875 by Captain E. L. Berthoud, who noted uranium minerals associated with the main coal bed. The Old Leyden coal mine workings have long been abandoned and caved, but specimens of the uranium-bearing rock can be seen on the old dump 700 feet to the south. The mineralized coal bed is 10 to 12 feet thick and occurs near the base of the Laramie formation of Upper Cretaceous age. Uranium minerals are present in the form of yellow incrustations and inclusions in fractured and partly silicified coal. Petrographic studies indicate that the silica and uranium minerals were deposited after deposition and carbonization of the coal. Secondary uranium minerals also were found by C. R. Butler along the outcrop of the sandstones in the Laramie formation. No uranium minerals were found in place by the writer, but four samples from the dump contained 0.001, 0,005, 0.17 and 0.69 percent uranium.

  8. Pakistan's pattern of development and prospects.

    PubMed

    Baqui, M

    1979-01-01

    This paper analyzes past and present development experiences in Pakistan, and gives indications of possible directions for future development. Since 1969 there has been an open dissatisfaction with economic management from the government, which has resulted in a drying up of private investment. However, this drawback was partly balanced by a rapid increase in income received by Pakistanis working abroad, particularly in the Middle East. There have been slight increases in growth in agriculture, industry, and in the service sector, such as banking, insurance, and shipping. The growth of per capita income, however, is constantly offset by the acceleration in population growth, which has reached 3% a year. Literacy rate is still 19% of the total population, and basic health facilities cover only 50% of the population, while potable water supply is available to 11.2% of the rural population. Possible development directions would include the denationalization of some industries, and the creation of competition between the private and public sectors, so to improve the climate for private investment. Water availability for land irrigation should be expanded, and mineral fields better surveyed and exploited. Pakistan should develop the possibility of growing trade offered by its geographical location, improve all kinds of social services, including family planning, education, and health services, and provide the means to produce energy for all the prospected programs. PMID:12261814

  9. Basics and prospective of magnetic Heusler compounds

    SciTech Connect

    Felser, Claudia Wollmann, Lukas; Chadov, Stanislav; Fecher, Gerhard H.; Parkin, Stuart S. P.

    2015-04-01

    Heusler compounds are a remarkable class of materials with more than 1000 members and a wide range of extraordinary multi-functionalities including halfmetallic high-temperature ferri- and ferromagnets, multi-ferroics, shape memory alloys, and tunable topological insulators with a high potential for spintronics, energy technologies, and magneto-caloric applications. The tunability of this class of materials is exceptional and nearly every functionality can be designed. Co{sub 2}-Heusler compounds show high spin polarization in tunnel junction devices and spin-resolved photoemission. Manganese-rich Heusler compounds attract much interest in the context of spin transfer torque, spin Hall effect, and rare earth free hard magnets. Most Mn{sub 2}-Heusler compounds crystallize in the inverse structure and are characterized by antiparallel coupling of magnetic moments on Mn atoms; the ferrimagnetic order and the lack of inversion symmetry lead to the emergence of new properties that are absent in ferromagnetic centrosymmetric Heusler structures, such as non-collinear magnetism, topological Hall effect, and skyrmions. Tetragonal Heusler compounds with large magneto crystalline anisotropy can be easily designed by positioning the Fermi energy at the van Hove singularity in one of the spin channels. Here, we give a comprehensive overview and a prospective on the magnetic properties of Heusler materials.

  10. A prospective study of rock climbing injuries.

    PubMed Central

    Wyatt, J P; McNaughton, G W; Grant, P T

    1996-01-01

    OBJECTIVES: To study the rate, causes, and nature of rock climbing injuries presenting to an accident and emergency (A&E) department. METHODS: Patients presenting with rock climbing injuries to an urban A&E department were studied prospectively for one year. RESULTS: 19 rock climbers presented during the year, at a rate of one per 2774 A&E attendances. Fourteen climbers were injured on outdoor cliffs and five on the local indoor climbing wall, where the safety mats were noted to be in poor condition. Eighteen climbers had been injured during falls, 17 hitting the ground. Twelve of these climbers sustained fractures, four of which were missed on initial attendance. The remaining climber sustained the characteristic A2 pulley finger injury, which was treated conservatively with a good result. CONCLUSIONS: The risks of rock climbing in Britain would be reduced if lead climbers arranged protection at earlier stages of climbs. Sports centres with climbing walls should regularly inspect and repair their safety equipment. It is important for staff in A&E departments to appreciate the large forces involved in any climbing fall, in order that significant injuries are not missed. Those treating injured climbers should also be aware of the specific injuries to which elite climbers are predisposed. Images Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 PMID:8799601

  11. Ossiculoplasty: A Prospective Study of 80 Cases

    PubMed Central

    Chavan, Shrinivas Shripatrao; Jain, Prateek V; Vedi, Jeevan N; Rai, Dharmendra kumar; Kadri, Himayat

    2014-01-01

    Introduction: The use of ossicular graft material in ossicular chain reconstruction has significantly improved hearing results hearing after tympanoplasty and tympanomastoid surgery for chronic otitis media. Today, otologists have a wide array of tools from which to choose, but may find it difficult to know which middle ear implant works best. Materials and Methods: A prospective study of 80 patients who underwent ossiculoplasty was performed in the ear, nose, and throat (ENT) department at a tertiary health care facility from 2011 to 2013. Patients with chronic suppurative otitis media with an air-bone gap (ABG) of >25 dB with ossicular involvement were included in the study. Total ossicular replacement prosthesis (TORP), partial ossicular replacement prosthesis (PORP), and refashioned incus were used. Success was defined as ABG <25 dB on postoperative Day 90. Results: The majority patients were of middle age with moderate conductive hearing loss. Incus was the most susceptible ossicle. Overall success rate in this study was 80.0% with an average change of 15.76 dB in ABG. Conclusion: With continuing advances in our understanding of middle ear mechanics, the results of ossiculoplasty are improving and results can be very rewarding in experienced hands. Severity of preoperative ear discharge, preoperative mastoid cellularity, presence of disease, and surgical procedure proved to be significant prognostic factors. Autograft incus and PORP fared better when the malleus handle was present while TORP gave better results when the malleus handle was eroded. PMID:25009804

  12. Status and prospects of the SNO+ experiment

    NASA Astrophysics Data System (ADS)

    Maneira, J.

    2016-05-01

    The SNO+ experiment is located at the SNOLAB underground laboratory and will employ 780 tons of liquid scintillator loaded, in its initial phase, with 800 kg of 130Te (0.3% by mass) for a low-background and high-isotope-mass search for neutrino-less double beta decay. SNO+ reuses the acrylic vessel and PMT array of the SNO detector, but several experimental upgrades and adaptations were necessary to allow for the use of liquid scintillator. The SNO+ technique allows a staged approach, and extensive R&D is ongoing to increase the loadings and improve the purification of Tellurium. The very good conditions of background and low energy threshold allow SNO+ to also have other physics topics in its program, including geo- and reactor neutrinos, Supernova and solar neutrinos. This talk will describe the main advantages and challenges of the SNO+ approach for the double-beta decay program, the current status of the experiment and its sensitivity prospects.

  13. Basics and prospective of magnetic Heusler compounds

    NASA Astrophysics Data System (ADS)

    Felser, Claudia; Wollmann, Lukas; Chadov, Stanislav; Fecher, Gerhard H.; Parkin, Stuart S. P.

    2015-04-01

    Heusler compounds are a remarkable class of materials with more than 1000 members and a wide range of extraordinary multi-functionalities including halfmetallic high-temperature ferri- and ferromagnets, multi-ferroics, shape memory alloys, and tunable topological insulators with a high potential for spintronics, energy technologies, and magneto-caloric applications. The tunability of this class of materials is exceptional and nearly every functionality can be designed. Co2-Heusler compounds show high spin polarization in tunnel junction devices and spin-resolved photoemission. Manganese-rich Heusler compounds attract much interest in the context of spin transfer torque, spin Hall effect, and rare earth free hard magnets. Most Mn2-Heusler compounds crystallize in the inverse structure and are characterized by antiparallel coupling of magnetic moments on Mn atoms; the ferrimagnetic order and the lack of inversion symmetry lead to the emergence of new properties that are absent in ferromagnetic centrosymmetric Heusler structures, such as non-collinear magnetism, topological Hall effect, and skyrmions. Tetragonal Heusler compounds with large magneto crystalline anisotropy can be easily designed by positioning the Fermi energy at the van Hove singularity in one of the spin channels. Here, we give a comprehensive overview and a prospective on the magnetic properties of Heusler materials.

  14. Depression after CABG: a prospective study

    PubMed Central

    Nunes, Joana Kátya Veras Rodrigues Sampaio; de Figueiredo Neto, José Albuquerque; de Sousa, Rosângela Maria Lopes; Costa, Vera Lívia Xavier de Castro; Silva, Flor de Maria Araújo Mendonça; da Hora, Ana Flávia Lima Teles; da Silva, Edna Lúcia Coutinho; Reis, Lívia Mariane Castelo Branco

    2013-01-01

    Introduction Depression during or shortly after hospitalization elevated two to three times the risk of mortality or nonfatal cardiac events, significantly increasing the morbidity and mortality of these patients. Objective To assess the impact of revascularization on symptoms of depression in patients with coronary artery disease. Methods A prospective cohort study of 57 patients of both sexes undergoing coronary artery bypass grafting between June 2010 and June 2011. We used the SF-36 to assess quality of life, and the Beck Depression Inventory to detect depressive symptoms, applied preoperatively and six months. Results The prevalence of patients aged 60-69 years was 22 patients (38.60%), 39 men (68.42%), 26 described themselves as mixed race (45.61%), 16 literate (28.07 %) and 30 married (52.63%). The beck depression inventory score demonstrated increased after revascularization: 15 patients mild (26.32%) at time zero to 17 (29.82%) after. And with moderate, seven patients (12.28%) before and 10 (17.54%) after. In the categories of individuals with decreased minimum degree of 32 (56.14%) to 28 (49.12%), and severe of three (5.26%) for two (3.51%) patients. Association was observed between beck depression inventory, gender, age, lifestyle, comorbidities and quality of life. Conclusion There was a high prevalence of elevated beck depression inventory scores, lowest scores of depressive symptoms among men and association between the improvement of quality of life scores and beck depression inventory. PMID:24598954

  15. Hydrocarbon prospects offshore southern West Greenland

    SciTech Connect

    Chalmers, J.A.; Dahl-Jensen, T.; Bate, K.J.; Whittaker, R.C.

    1996-12-31

    Interpretation of regional seismic data acquired in the 1990s together with a re-appraisal of the wells drilled in the 1970s has lead to an appreciation that the southern West Greenland Basin is underexplored and may contain large quantities of hydrocarbons. The regional structure and stratigraphy of the basin has been worked out. An early phase of extension, probably in the Early Cretaceous, was followed by a thermal subsidence phase in the Late Cretaceous during which thick mudstones were deposited. Renewed extension and strike-slip faulting associated with the onset of sea-floor spreading in the Labrador Sea in the Early Tertiary lead to the formation of large structures capable of trapping large quantities of hydrocarbons. Flat spots have been identified in several prospects in the Fylla Structural Complex, which is presently open for licensing, and other large structural traps exist on the Kang{cflx a}miut Ridge and in the Ikermiut area. Stratigraphic traps exist in a large syn-rift fan of mid-Cretaceous age and in Lower Tertiary basin-floor fans. All of these after structures are found in an area with an {open_quotes}open-door{close_quotes} licensing policy.

  16. Hydrocarbon prospects offshore southern West Greenland

    SciTech Connect

    Chalmers, J.A.; Dahl-Jensen, T.; Bate, K.J.; Whittaker, R.C. )

    1996-01-01

    Interpretation of regional seismic data acquired in the 1990s together with a re-appraisal of the wells drilled in the 1970s has lead to an appreciation that the southern West Greenland Basin is underexplored and may contain large quantities of hydrocarbons. The regional structure and stratigraphy of the basin has been worked out. An early phase of extension, probably in the Early Cretaceous, was followed by a thermal subsidence phase in the Late Cretaceous during which thick mudstones were deposited. Renewed extension and strike-slip faulting associated with the onset of sea-floor spreading in the Labrador Sea in the Early Tertiary lead to the formation of large structures capable of trapping large quantities of hydrocarbons. Flat spots have been identified in several prospects in the Fylla Structural Complex, which is presently open for licensing, and other large structural traps exist on the Kang[cflx a]miut Ridge and in the Ikermiut area. Stratigraphic traps exist in a large syn-rift fan of mid-Cretaceous age and in Lower Tertiary basin-floor fans. All of these after structures are found in an area with an [open quotes]open-door[close quotes] licensing policy.

  17. World food trends and prospects to 2025

    PubMed Central

    Dyson, Tim

    1999-01-01

    This paper reviews food (especially cereal) production trends and prospects for the world and its main regions. Despite fears to the contrary, in recent years we have seen continued progress toward better methods of feeding humanity. Sub-Saharan Africa is the sole major exception. Looking to the future, this paper argues that the continuation of recent cereal yield trends should be sufficient to cope with most of the demographically driven expansion of cereal demand that will occur until the year 2025. However, because of an increasing degree of mismatch between the expansion of regional demand and the potential for supply, there will be a major expansion of world cereal (and noncereal food) trade. Other consequences for global agriculture arising from demographic growth include the need to use water much more efficiently and an even greater dependence on nitrogen fertilizers (e.g., South Asia). Farming everywhere will depend more on information-intensive agricultural management procedures. Moreover, despite continued general progress, there still will be a significant number of undernourished people in 2025. Signs of heightened harvest variability, especially in North America, are of serious concern. Thus, although future general food trends are likely to be positive, in some respects we also could be entering a more volatile world. PMID:10339520

  18. Injuries in competitive boxing. A prospective study.

    PubMed

    Siewe, J; Rudat, J; Zarghooni, K; Sobottke, R; Eysel, P; Herren, C; Knöll, P; Illgner, U; Michael, J

    2015-03-01

    Boxing remains a subject of controversy and is often classified as dangerous. But the discussion is based mostly on retrospective studies. This survey was conducted as a prospective study. From October 2012 to September 2013, 44 competitive boxers were asked to report their injuries once a month. The questionnaire collected general information (training, competition) and recorded the number of bouts fought, injuries and resulting lost days. A total of 192 injuries were recorded, 133 of which resulted in interruption of training or competition. Each boxer sustained 3 injuries per year on average. The injury rate was 12.8 injuries per 1 000 h of training. Boxers fighting more than 3 bouts per year sustain more injuries (p=0.0075). The injury rate does is not a function of age (age≤19 vs. > 19a, p=0.53). Injuries to the head and the upper limbs occur most frequently. The most common injuries are soft tissue lacerations and contusions. Head injuries with neurological symptoms rarely occur (4.2%). Boxing has a high injury rate that is comparable with other contact sports, but most injuries are minor. Injury frequency is not a function of whether the boxer competes in the junior or adult category. Athletes fighting many bouts per year have a greater risk of injury. PMID:25376728

  19. Legume proteomics: Progress, prospects, and challenges.

    PubMed

    Rathi, Divya; Gayen, Dipak; Gayali, Saurabh; Chakraborty, Subhra; Chakraborty, Niranjan

    2016-01-01

    Legumes are the major sources of food and fodder with strong commercial relevance, and are essential components of agricultural ecosystems owing to their ability to carry out endosymbiotic nitrogen fixation. In recent years, legumes have become one of the major choices of plant research. The legume proteomics is currently represented by more than 100 reference maps and an equal number of stress-responsive proteomes. Among the 48 legumes in the protein databases, most proteomic studies have been accomplished in two model legumes, soybean, and barrel medic. This review highlights recent contributions in the field of legume proteomics to comprehend the defence and regulatory mechanisms during development and adaptation to climatic changes. Here, we attempted to provide a concise overview of the progress in legume proteomics and discuss future developments in three broad perspectives: (i) proteome of organs/tissues; (ii) subcellular compartments; and (iii) spatiotemporal changes in response to stress. Such data mining may aid in discovering potential biomarkers for plant growth, in general, apart from essential components involved in stress tolerance. The prospect of integrating proteome data with genome information from legumes will provide exciting opportunities for plant biologists to achieve long-term goals of crop improvement and sustainable agriculture. PMID:26563903

  20. Prospective Memory Training: Outlining a New Approach

    PubMed Central

    Waldum, Emily R.; Dufault, Carolyn L.; McDaniel, Mark A.

    2015-01-01

    Prospective memory (PM) tasks are those that must be performed in the future (e.g., attend an appointment). While these everyday tasks can be especially relevant for older adults (i.e., medication adherence), and have been associated with age-related decline, PM has been virtually overlooked in the cognitive training domain. This article describes the first comprehensive PM training intervention. Older adults (age 55 to 75) who received training completed 8 weekly PM training sessions that consisted of variable PM training tasks, strategy-focused discussion, and homework assignments. Those assigned to a control group completed only the first and last training task. On both a real-world proxy PM transfer task and the training tasks detailed here, there was a positive impact of PM training, suggesting practical benefits of the current training package for older adults. Benefits may also extend to other special populations who experience PM impairments (e.g., traumatic brain injury [TBI], Parkinson’s). PMID:25480795

  1. Synthesis of Heaviest Elements (results and Prospects)

    NASA Astrophysics Data System (ADS)

    Oganessian, Yuri

    The formation and decay properties of the heaviest nuclei with Z = 112 - 116 and 118 were studied in the reactions 238U, 242,244Pu, 243Am, 245,248Cm and 249Cf+48Ca. The new nuclides mainly undergo sequential α-decay, which ends with spontaneous fission. The total time of decays ranges from 0.5 ms to about 1 day, depending on the proton and neutron numbers in the synthesized nuclei. The atomic number of the new elements 115 and 113 was confirmed also by an independent radiochemical experiment based on the identification of the neutron-rich isotope 268Db (TSF ≈ 30 h), the final product in the chain of α-decays of the odd-odd parent nucleus 288115. The comparison of the decay properties of 29 new nuclides with Z = 104 - 118 and N = 162 - 177 gives evidence for the decisive influence of the structure of superheavy nuclei on their stability with respect to different modes of radioactive decay. The investigations connected with the search for superheavy elements in Nature (cosmic rays) and prospects of superheavy element research are also presented.

  2. Child cyclist injuries: a prospective study.

    PubMed

    Armson, C J; Pollard, C W

    1986-02-01

    A prospective study of pedalcycle accident morbidity and mortality was carried out from February to mid-November 1983 because of the high frequency of child cyclist injuries that were occurring on the relatively flat Redcliffe Peninsula. These injuries were apparently associated with the large number of young children who use a bicycle as their main mode of transport to and from school. The schools were surveyed for the extent of bicycle use and cyclists were surveyed for the amount of protective clothing that was worn while involved in cycling. It was found that a disturbingly large number of young children made regular bicycle trips on public roads with the minimal use of safety helmets or any other form of protective clothing. Nearly 40% of on-road accidents involved children of less than 12 years of age, and over 10% of these involved children of six years of age or less. No child in our series of on-road accidents was, at the time of injury, wearing a safety helmet or any other form of protective clothing. No bicycle accidents occurred on the exclusive cycle track of approximately 1 km in length on the Peninsula. PMID:3945202

  3. Ion cyclotron emission studies: Retrospects and prospects

    DOE PAGESBeta

    Gorelenkov, N. N.

    2016-06-05

    Ion cyclotron emission (ICE) studies emerged in part from the papers by A.B. Mikhailovskii published in the 1970s. Among the discussed subjects were electromagnetic compressional Alfv,nic cyclotron instabilities with the linear growth rate similar ~ √(nα/ne) driven by fusion products, -particles which draw a lot of attention to energetic particle physics. The theory of ICE excited by energetic particles was significantly advanced at the end of the 20th century motivated by first DT experiments on TFTR and subsequent JET experimental studies which we highlight. Recently ICE theory was advanced by detailed theoretical and experimental studies on spherical torus (ST) fusionmore » devices where the instability signals previously indistinguishable in high aspect ratio tokamaks due to high toroidal magnetic field became the subjects of experiments. Finally, we discuss prospects of ICE theory applications for future burning plasma (BP) experiments such as those to be conducted in ITER device in France, where neutron and gamma rays escaping the plasma create extremely challenging conditions fusion alpha particle diagnostics.« less

  4. HEPATOCELLULAR CARCINOMA: CURRENT AND PROSPECTIVE IMMUNOTHERAPEUTIC STRATEGIES.

    PubMed

    Kikodze, N; Mazmishvili, K; Iobadze, M; Rekhviashvili, Kh; Nanava, N; Pantsulaia, I; Mizandari, M; Janikashvili, N; Chikovani, T

    2015-09-01

    Hepatocellular carcinoma (HCC) is a highly lethal and the most common primary liver cancer with increasing worldwide incidence. Pathogenesis of HCC is immune mediated, however, not completely understood. Chronic low-grade inflammation alters both innate and adaptive immune responses. As a result tolerogenic environment is established in damaged organ. Up to date, incomplete understanding of HCC pathogenesis and the extend of biomarker variability among patients represent the major obstacle for early diagnosis and for the choice of effective treatment. Among current treatment options for HCC, thermal ablation strategy, which in addition to cancer eradication provides adjuvant/"danger"signal to the patient's immune cells, has demonstrated its active immunotherapeutic effect. In ongoing phase I/II clinical trials, tumor antigen loaded dendritic cell (DC)-based vaccines as well as tumor-specific cytotoxic T cells are being tested. Genetically redirected T cell therapy and more refined autologous vaccines are still awaiting approaches in HCC. The topic of this review focuses on current and bench-to-bedside immunotherapeutic strategies for HCC and discusses their advantages and limitations in clinic. We also weight up several prospective immunotherapeutic approaches which in theory have the potential for further implication in HCC. Combination of the induction of effective antitumor immunity with the inhibition of the mechanisms of tumor-induced immunosuppression ought to be a key objective in these future developments. PMID:26355320

  5. 33 CFR 210.1 - Advance notice to prospective bidders.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... to warrant their buying plans; (b) Specify the date by which bidders should return the request card... invitation, when issued, will be furnished only to those prospective bidders who have returned a request...

  6. 33 CFR 210.1 - Advance notice to prospective bidders.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... to warrant their buying plans; (b) Specify the date by which bidders should return the request card... invitation, when issued, will be furnished only to those prospective bidders who have returned a request...

  7. 33 CFR 210.1 - Advance notice to prospective bidders.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... to warrant their buying plans; (b) Specify the date by which bidders should return the request card... invitation, when issued, will be furnished only to those prospective bidders who have returned a request...

  8. 33 CFR 210.1 - Advance notice to prospective bidders.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... to warrant their buying plans; (b) Specify the date by which bidders should return the request card... invitation, when issued, will be furnished only to those prospective bidders who have returned a request...

  9. 77 FR 20823 - Prospective Grant of Exclusive License: Family Healthware

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-06

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Prospective Grant of Exclusive License: Family Healthware AGENCY: Technology Transfer Office, Centers for Disease Control and Prevention (CDC),...

  10. Besides Your Lungs, Smoking May Harm Your Job Prospects, Paycheck

    MedlinePlus

    ... html Besides Your Lungs, Smoking May Harm Your Job Prospects, Paycheck Income difference works out to more ... gone. Today, smokers have a harder time finding jobs, and earn less than nonsmokers when they do ...

  11. [PHYTOSAPONINS OF DIOSCOREA: PROSPECTS FOR APPLICATION IN WOMEN].

    PubMed

    Fedotoval, Yu O; Shleikin, A G

    2016-01-01

    This literature review is focused on findings concerning the pharmacological effects of Dioscorea phytosaponins (DPSs) on female organism. Expediency and prospects of developing DPS preparations for the treatment of mnestic and metabolic disorders accompanying climacteric syndrome are assessed. PMID:27416682

  12. Characterizing and validating the PROSPECT segmented scintillator detector design

    NASA Astrophysics Data System (ADS)

    Norcini, Danielle; Prospect Collaboration

    2016-03-01

    The PROSPECT experiment will use two segmented liquid scintillator detectors positioned 7-20m from the High Flux Isotope Reactor (HFIR) core to perform a search for eV-scale sterile neutrinos and measure the antineutrino spectrum of uranium-235. A multi-year R&D program focused on background studies at the HFIR reactor, lithium-loaded liquid scintillator development, and characterization of multiple prototype detectors has culminated in the design of a segmented, 3-ton liquid scintillator detector for PROSPECT Phase I. This detector design is being validated with a 50 liter, 2-segment prototype detector, PROSPECT-50. We will report results of on-going performance and calibration studies and discuss implications for the PROSPECT physics program.

  13. How important is importance for prospective memory? A review

    PubMed Central

    Walter, Stefan; Meier, Beat

    2014-01-01

    Forgetting to carry out an intention as planned can have serious consequences in everyday life. People sometimes even forget intentions that they consider as very important. Here, we review the literature on the impact of importance on prospective memory performance. We highlight different methods used to manipulate the importance of a prospective memory task such as providing rewards, importance relative to other ongoing activities, absolute importance, and providing social motives. Moreover, we address the relationship between importance and other factors known to affect prospective memory and ongoing task performance such as type of prospective memory task (time-, event-, or activity-based), cognitive loads, and processing overlaps. Finally, we provide a connection to motivation, we summarize the effects of task importance and we identify important venues for future research. PMID:25018743

  14. Prospects for the precision measurement of {alpha}{sub s}

    SciTech Connect

    Burrows, P.N.; Dixon, L.; El-Khadra, A.X.

    1996-12-01

    The prospects for the measurement of the strong coupling constant {alpha}{sub MS}(M{sub Z}) to a relative uncertainty of 1 % are discussed. Particular emphasis is placed on the implications relating to future High Energy Physics facilities.

  15. A Prospective Randomized Trial of Two Different Prostate Biopsy Schemes

    ClinicalTrials.gov

    2016-07-03

    Prostate Cancer; Local Anesthesia; Prostate-Specific Antigen/Blood; Biopsy/Methods; Image-guided Biopsy/Methods; Prostatic Neoplasms/Diagnosis; Prostate/Pathology; Prospective Studies; Humans; Male; Ultrasonography, Interventional/Methods

  16. Prospective of the application of ultrasounds in archaeology

    NASA Astrophysics Data System (ADS)

    Salazar, A.; Rodriguez, A.; Safont, G.; Vergara, L.

    2012-12-01

    This paper presents a prospective analysis of non destructive testing (NDT) based on ultrasounds in the field of archaeology applications. Classical applications of ultrasounds techniques are reviewed, including ocean exploration to detect wrecks, imaging of archaeological sites, and cleaning archaeological objects. The potential of prospective applications is discussed from the perspective of signal processing, with emphasis on the area of linear time variant models. Thus, the use of ultrasound NDT is proposed for new ceramic cataloguing and restoration methods.

  17. 43 CFR 3505.60 - How long is my prospecting permit in effect?

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... effect? 3505.60 Section 3505.60 Public Lands: Interior Regulations Relating to Public Lands (Continued... MINERALS OTHER THAN COAL AND OIL SHALE Prospecting Permits Prospecting Permit Terms and Conditions § 3505.60 How long is my prospecting permit in effect? Your prospecting permit will be effective for...

  18. An investigation into prospective memory in children with developmental dyslexia.

    PubMed

    Khan, Azizuddin

    2014-01-01

    Developmental dyslexia hinders reading and writing acquisition of around 5-10% of the children all over the world. However, little is known about role of prospective memory among dyslexics. Prospective memory is realization of delayed intention. Realization of delayed intention requires self initiated process. The present study explored the role of memory (prospective and retrospective memory), meta-memory and attention among dyslexic's children. One hundred and fifteen children (51 dyslexics and 64 normal controls) participated in the study. Prospective and retrospective memory questionnaire, everyday attention questionnaire and meta-memory were administered on children. Analysis of variance was used to analyses the data. All the main effects were significant. Some interactions were also found to be significant. Results suggest that dyslexic's performance on memory (prospective and retrospective memory) was worse than normal control. Meta-memory influences both dyslexics and normal control on prospective and retrospective memory. However, meta-memory affected dyslexics much more than normal control group. Similarly, significant differential effects were observed for simple, difficult and mixed attentional condition among between dyslexics and normal control. Dyslexic's performance was deteriorated as compared to normal control group. The findings of the study are discussed in the light of the existing literature. PMID:25538638

  19. Intrusive prospective imagery, posttraumatic intrusions and anxiety in schizophrenia.

    PubMed

    Malcolm, Charlotte P; Picchioni, Marco M; Ellett, Lyn

    2015-12-30

    Trauma exposure and intrusive thoughts are commonly reported in both schizophrenia and posttraumatic stress disorder (PTSD). Information processing accounts suggest that intrusions occur in the two conditions as a result of insufficient state and/or trait contextual processing in long-term memory. Most research has focused on intrusions about past events, while growing evidence suggests that intrusions about prospective imagined events warrants further investigation. Prospective intrusive imagery has yet to be examined in psychotic disorders but could provide crucial information regarding the aetiology and maintenance of psychotic symptoms. The current study examines the role of prospective intrusive imagery, posttraumatic intrusions and anxiety in schizophrenia. Fifty-seven participants (30 patients and 27 healthy controls) completed measures of trauma, PTSD, anxiety, general non-affective use of imagery, and intrusive prospective imagery. Patients reported significantly more intrusive prospective imagery relative to control participants but, importantly, not greater use of general non-affective imagery. Intrusive prospective imagery was associated with posttraumatic intrusions and anxiety in schizophrenia. The findings are consistent with information processing models of intrusions and psychosis, and provide novel insights for theoretical accounts, clinical formulation and therapeutic targets for psychotic symptoms in schizophrenia. PMID:26619917

  20. An investigation into prospective memory in children with developmental dyslexia

    PubMed Central

    Khan, Azizuddin

    2014-01-01

    Developmental dyslexia hinders reading and writing acquisition of around 5–10% of the children all over the world. However, little is known about role of prospective memory among dyslexics. Prospective memory is realization of delayed intention. Realization of delayed intention requires self initiated process. The present study explored the role of memory (prospective and retrospective memory), meta-memory and attention among dyslexic's children. One hundred and fifteen children (51 dyslexics and 64 normal controls) participated in the study. Prospective and retrospective memory questionnaire, everyday attention questionnaire and meta-memory were administered on children. Analysis of variance was used to analyses the data. All the main effects were significant. Some interactions were also found to be significant. Results suggest that dyslexic's performance on memory (prospective and retrospective memory) was worse than normal control. Meta-memory influences both dyslexics and normal control on prospective and retrospective memory. However, meta-memory affected dyslexics much more than normal control group. Similarly, significant differential effects were observed for simple, difficult and mixed attentional condition among between dyslexics and normal control. Dyslexic's performance was deteriorated as compared to normal control group. The findings of the study are discussed in the light of the existing literature. PMID:25538638

  1. Planetary cores: current knowledge and future prospects

    NASA Astrophysics Data System (ADS)

    Nimmo, F.

    2011-12-01

    Observations of planetary cores tell us about the: formation; evolution; and present-day state of silicate bodies. In this review I will highlight recent results and future prospects. Formation. Core formation is detectable geochemically from siderophile element abundances and both unstable (e.g. Hf-W [1]) and stable (e.g. Cr [2], Si [3]) isotopic systems. Hf-W studies tell us that small bodies (like Vesta and perhaps Mars [4]) underwent differentiation very early, presumably due to 26Al decay [1]. Larger silicate-dominated bodies experienced stochastic addition of core material over tens of Myr, during large impacts [5]. Bodies with massive cores may result from hit-and-run collisions [6] or mantle-stripping impacts [7]. The apparent existence of a lunar core [8] places constraints on the Moon's formation. Evolution. Core solidification results in significant volume changes and surface contraction. Surface tectonics thus provides a constraint on core evolution [e.g. 9]. Dynamo generation usually depends on the rate of core cooling/solidification, which in turn depends on the mantle's ability to remove heat. Thus, an extant or ancient dynamo tells us about the long-term thermal evolution of the body [10]. In some cases, magnetic field characteristics may be related to the details of core structure and/or solidification. In others, mechanical forcing, such as tidally-driven motion [11] or impacts [12] may cause dynamo activity. Bodies with (presumed) liquid cores but no dynamo (Io, Venus) also require explanation. Present day. A body's angular momentum and tidal response depend on core properties such as CMB topography, inner core viscosity, magnetic field strength and other factors. Thus, measurements of time-varying spin state and/or gravity can be used to infer the existence of a liquid layer [13-15] and (for the Earth) core properties such as the magnetic field strength [16]. Ground-based radar observations of Mercury [14] and (in future) Europa and Io should

  2. Prospects For a Carbon ARGO [ II

    NASA Astrophysics Data System (ADS)

    Bishop, J. K.

    2004-12-01

    Understanding the dynamics and sedimentation of biologically fixed particulate organic and inorganic carbon (POC and PIC) is fundamental to the prediction of future levels of atmospheric carbon dioxide. Over the last four years LBNL has been working to bridge a major 'space-time' gap in upper ocean carbon cycle observations. We have launched twelve robotic Carbon Explorers built on SIO's Orbcomm/GPS enhanced Sounding Oceanographic Lagrangian Observer (SOLO). These 'souped up' versions of ocean-profiling ARGO floats, operating in remote and stormy seas, have returned in real-time year-long high-frequency records of POC variability and recently have explored the systematics of carbon sedimentation to kilometer depths. We briefly recap the success of a new fast profiling optical sensor for PIC (sensitivity better than 0.1 μ M) which was deployed during routine CTD/rosette casts during the R/V Ron Brown June - July 2003 reoccupation of WOCE A16N (Iceland to Madiera) in the N Atlantic Ocean. Our primary aim is to report on the development of paired autonomous imaging sediment traps designed to optically record hourly variations of POC and PIC flux at depth for weeks to months. Preliminary analysis of 22 days of observations achieved this year near Hawaii indicate a major contribution of zooplankton parts to carbon flux at station ALOHA. We further recorded multiple events of simultaneous arrival of fecal material and associated zooplankton feeders. This supports the importance of such animals in determining the attenuation of carbon flux to the deep sea. The success of the Carbon Explorers, the new PIC sensor, and the developing capability for season to year-long high frequency records of POC and PIC carbon sedimentation in the very observation-poor but biologically-active upper kilometers of the ocean suggest excellent prospects for a 'Carbon-ARGO'.

  3. Supracostal percutaneous nephrolithotomy: A prospective comparative study

    PubMed Central

    Sinha, Maneesh; Krishnappa, Pramod; Subudhi, Santosh Kumar; Krishnamoorthy, Venkatesh

    2016-01-01

    Introduction: A widely prevalent fear of thoracic complications with the supracostal approach has led to its underutilization in percutaneous nephrolithotomy (PCNL). We frequently use the supracostal approach and compared the efficacy and thoracic complications of infracostal, supra 12th, and supra 11th punctures. Materials and Methods: This was a prospective study of patients who underwent PCNL between January 2005 and December 2012. The patients were divided into three groups based on the access: infracostal, supra 12th (between the 11th and 12th ribs) and supra 11th (between the 10th and 11th ribs). Clearance rates, fall in hemoglobin levels, transfusion rates, perioperative analgesic requirements, hospital stay and thoracic complications were compared. Results: Seven hundred patients were included for analysis. There were 179 (25.5%) patients in the supra 11th group, 187 (26.7%) patients in the supra 12th group and 334 (47.8%) patients in the infracostal group. The overall clearance rate was 78% with no difference in the three groups. The postoperative analgesic requirements were significantly higher in the supracostal groups and showed a graded increase from infracostal to supra 12th to supra 11th. During the study period, only 2 patients required angioembolization (0.3%) and none required open exploration. The number of patients requiring intercostal chest drain insertion was extremely low, at 1.6% and 2.2% in the supra 12th and supra 11th groups, respectively. Conclusions: Our results confirm the feasibility of the supracostal approach including punctures above the 11th rib, albeit at the cost of an increase in thoracic complications. Staying in the line of the calyx has helped us to minimize the most dreaded complication of bleeding requiring angioembolization. PMID:26941494

  4. Prospects for drug therapy for hyperlipoproteinaemia.

    PubMed

    Davignon, J

    1995-04-01

    Prospects for therapy for hyperlipoproteinaemia are likely to rely more heavily on improvement of known molecules than on development of new ones aimed at various components of the plasma lipid transport system. Promising advances are revealed in both directions. A new synthetic inhibitor of HMG CoA reductase, atorvastatin, lowers plasma low-density lipoprotein (LDL)-cholesterol and triglycerides and increases high-density lipoprotein (HDL)-cholesterol with greater potency than currently available drugs of this class. A highly selective thyromimetic, CGS 26214, virtually devoid of cardiovascular effects, has potent cholesterol-lowering activity in several models, reduces post-prandial response to a fat load in rats and markedly lowers Lp(a) concentrations in monkeys. There is a trend to develop inhibitors of acyl CoA: cholesterol acyltransferase (ACAT) with more than one desirable activity. Thus, ACA-147, which inhibits cholesterol absorption, reduces LDL, prevents their oxidation and increases HDL-cholesterol, was antiatherogenic in cholesterol-fed rabbits. Sch48461 has emerged as an inhibitor of cholesterol absorption by an as yet unknown mechanism unrelated to ACAT inhibition, while a synthetic saponin, CP- 148,623, which prevents the entry of cholesterol into intestinal mucosa, has a potential for combination therapy. Approaches which may find applications in a more distant future include molecular cages to trap cholesterol selectively, "cholesterol vaccination", overexpression of the apolipoprotein E gene in the skin, and gene therapy. With improvements in understanding of the pathophysiology of dyslipoproteinaemias, drug discovery and development may focus more in future on the specific causes of disease. PMID:7621974

  5. Prospective Tests on Biological Models of Acupuncture

    PubMed Central

    2009-01-01

    The biological effects of acupuncture include the regulation of a variety of neurohumoral factors and growth control factors. In science, models or hypotheses with confirmed predictions are considered more convincing than models solely based on retrospective explanations. Literature review showed that two biological models of acupuncture have been prospectively tested with independently confirmed predictions: The neurophysiology model on the long-term effects of acupuncture emphasizes the trophic and anti-inflammatory effects of acupuncture. Its prediction on the peripheral effect of endorphin in acupuncture has been confirmed. The growth control model encompasses the neurophysiology model and suggests that a macroscopic growth control system originates from a network of organizers in embryogenesis. The activity of the growth control system is important in the formation, maintenance and regulation of all the physiological systems. Several phenomena of acupuncture such as the distribution of auricular acupuncture points, the long-term effects of acupuncture and the effect of multimodal non-specific stimulation at acupuncture points are consistent with the growth control model. The following predictions of the growth control model have been independently confirmed by research results in both acupuncture and conventional biomedical sciences: (i) Acupuncture has extensive growth control effects. (ii) Singular point and separatrix exist in morphogenesis. (iii) Organizers have high electric conductance, high current density and high density of gap junctions. (iv) A high density of gap junctions is distributed as separatrices or boundaries at body surface after early embryogenesis. (v) Many acupuncture points are located at transition points or boundaries between different body domains or muscles, coinciding with the connective tissue planes. (vi) Some morphogens and organizers continue to function after embryogenesis. Current acupuncture research suggests a convergence

  6. Present situation and prospects of China's population.

    PubMed

    Zha, R

    1989-06-01

    For a very long time China has been the most populous country in the world. Throughout the last 15-16 years China has achieved great success in checking the excessively rapid growth of its population. However, due to historical reasons as well as current changes, China is still facing a serious situation. As a result of historical evolution, a great number of contradictions exist in China between population on the 1 hand and arable land, food, natural resources, the environment, employment, education, and support of the aged on the other hand. Per capita arable land is now only about .1 hectare. Restricted by the area of arable land, the food supply in China has always been a source of tension. People are reclaiming land on hills and from lakes in ways that are not good for the environment. With rapid population growth, large numbers of young people are reaching working age every year. The ultimate goal of modernization is to promote the well-being of the people. Although the achievements of economic development have been remarkable, the level of goods per person remains low. This has made people realize that population growth must be controlled. The main causes of the rapid fertility decline are 1) socioeconomic development, 2) state guidance, and 3) a strong government policy. Beginning in 1979 in China, the focal point of work has been shifted to economic construction. China's strategic goal of population control is to attain the stationary state through rapid fertility decline. Prospects for the 21st century include 1) an aging population, 2) a more abundant labor force, 3) the further development of cultural and educational undertakings, 4) rapid urbanization, and 5) environmental pollution and resource shortages. PMID:12316068

  7. Aerial thermography in archaeological prospection: Applications & processing

    NASA Astrophysics Data System (ADS)

    Cool, Autumn Chrysantha

    Aerial thermography is one of the least utilized archaeological prospection methods, yet it has great potential for detecting anthropogenic anomalies. Thermal infrared radiation is absorbed and reemitted at varying rates by all objects on and within the ground depending upon their density, composition, and moisture content. If an area containing archaeological features is recorded at the moment when their thermal signatures most strongly contrast with that of the surrounding matrix, they can be visually identified in thermal images. Research conducted in the 1960s and 1970s established a few basic rules for conducting thermal survey, but the expense associated with the method deterred most archaeologists from using this technology. Subsequent research was infrequent and almost exclusively appeared in the form of case studies. However, as the current proliferation of unmanned aerial vehicles (UAVs) and compact thermal cameras draws renewed attention to aerial thermography as an attractive and exciting form of survey, it is appropriate and necessary to reevaluate our approach. In this thesis I have taken a two-pronged approach. First, I built upon the groundwork of earlier researchers and created an experiment to explore the impact that different environmental and climatic conditions have on the success or failure of thermal imaging. I constructed a test site designed to mimic a range of archaeological features and imaged it under a variety of conditions to compare and contrast the results. Second, I explored a new method for processing thermal data that I hope will lead to a means of reducing noise and increasing the clarity of thermal images. This step was done as part of a case study so that the effectiveness of the processing method could be evaluated by comparison with the results of other geophysical surveys.

  8. Prospective Frontier basins off eastern Australia

    SciTech Connect

    Falvey, D.A.; Hinz, K.; Willcox, J.B.; Exon, N.F.; Symonds, P.A.; Williamson, P.E.

    1986-07-01

    Eleven thousand kilometers of high-quality multichannel seismic reflection data have been gathered in four poorly known, but prospective areas off eastern Australia. The Otway basin has an area of 100,000 km/sup 2/, more than half of which is in depths exceeding 500 m. Its Cretaceous and Cenozoic sedimentary sequence is up to 10,000 m thick and is cut by large coast-parallel normal faults. The oldest marine strata are Cenomanian. The basinal area off west Tasmania covers 40,000 km/sup 2/, two-thirds of it in offshelf depths. It contains up to 6000 m of Cretaceous and Cenozoic sequences similar to those of the Otway basin. The Lord Howe Rise is a ribbon of continent off eastern Australia, about 2000 km long and 400 km wide. Much of its crest lies in water depths of 750-1200 m. Up to 4500 m of Mesozoic and Cenozoic sequences has been identified, and extensive faulting, related to the formation of the Tasman Sea, has formed rift basins and horst and graben areas. Simple extension was apparently dominant in the south, and oblique extension in the north. The Queensland Plateau covers 200,000 km/sup 2/, half of which is in water shallower than 1000 m. The plateau behaved as a stable block during and after the Paleogene spreading episode, which formed the Coral Sea to the northeast. About 1000 m of latest Cretaceous and Cenozoic sequences are present above a planated surface on the plateau, and up to 5000 m in the flanking Queensland and Townsville Troughs to the southwest. The sequence beneath the planated surface is believed to contain Cretaceous rift-fill sediments in places.

  9. Radiovirotherapy: principles and prospects in oncology.

    PubMed

    Touchefeu, Y; Franken, P; Harrington, K J

    2012-01-01

    Radiovirotherapy is defined as the use of viruses to deliver radioisotopic treatment into infected cells. Oncolytic viruses are able to selectively target and kill cancer cells. The combination of oncolytic viruses and radiation therapies can have synergistic antitumour properties. Viruses may act as radiosensitizers, and radiations can increase viral oncolytic properties. The combination of oncolytic viruses with a virally-directed radioisotope therapy is an innovative method to combine viruses and radiation therapy, selectively within the tumour cells. The sodium/iodide symporter (NIS) is the main transgene that has been studied for this approach. NIS can mediate the uptake of isotopes of iodine and technetium 99m for in vivo gene expression imaging and therapy. This review highlights the principles of radiovirotherapy, and its recent progress. Better understanding of the regulation of NIS opens up pathways by which to potentiate the functional expression of NIS. In terms of the therapeutic isotope, Iodine-131 has been most frequently studied but other isotopes (astatine- 211, rhenium-188) are of growing interest. Oncolytic viruses are able to infect selectively and replicate in cancer cells and promising early phase clinical trials have been recently published. Their development allows a better selectivity of viral infection and adds a virus-specific cytotoxicity to the therapeutic approach. Active research into strategies such as immunosuppressive treatment and cell-based carrier systems is seeking to circumvent the host antiviral immune response and, thus, increase the potential for systemic delivery. Finally, other anticancer therapies such as chemotherapy and external beam radiotherapy may have a synergistic effect with radiovirotherapy and such combinatorial approaches offering the prospect of accelerated translation into clinical studies. PMID:22397732

  10. Sleep Deprivation and Time-Based Prospective Memory

    PubMed Central

    Esposito, Maria José; Occhionero, Miranda; Cicogna, PierCarla

    2015-01-01

    Study Objectives: To evaluate the effect of sleep deprivation on time-based prospective memory performance, that is, realizing delayed intentions at an appropriate time in the future (e.g., to take a medicine in 30 minutes). Design: Between-subjects experimental design. The experimental group underwent 24 h of total sleep deprivation, and the control group had a regular sleep-wake cycle. Participants were tested at 08:00. Settings: Laboratory. Participants: Fifty healthy young adults (mean age 22 ± 2.1, 31 female). Interventions: 24 h of total sleep deprivation. Measurements and Results: Participants were monitored by wrist actigraphy for 3 days before the experimental session. The following cognitive tasks were administered: one time-based prospective memory task and 3 reasoning tasks as ongoing activity. Objective and subjective vigilance was assessed by the psychomotor vigilance task and a visual analog scale, respectively. To measure the time-based prospective memory task we assessed compliance and clock checking behavior (time monitoring). Sleep deprivation negatively affected time-based prospective memory compliance (P < 0.001), objective vigilance (mean RT: P < 0.001; slowest 10% RT: P < 0.001; lapses: P < 0.005), and subjective vigilance (P < 0.0001). Performance on reasoning tasks and time monitoring behavior did not differ between groups. Conclusions: The results highlight the potential dangerous effects of total sleep deprivation on human behavior, particularly the ability to perform an intended action after a few minutes. Sleep deprivation strongly compromises time-based prospective memory compliance but does not affect time check frequency. Sleep deprivation may impair the mechanism that allows the integration of information related to time monitoring with the prospective intention. Citation: Esposito MJ, Occhionero M, Cicogna P. Sleep deprivation and time-based prospective memory. SLEEP 2015;38(11):1823–1826. PMID:26085303

  11. PROSPECT: A Computer System for Globally-Optimal Threading

    SciTech Connect

    Xu, D.; Xu, Y.

    1999-08-06

    This paper presents a new computer system, PROSPECT, for protein threading. PROSPECT employs an energy function that consists of three additive terms: (1) a singleton fitness term, (2) a distance-dependent pairwise-interaction preference term, and (3) alignment gap penalty; and currently uses FSSP as its threading template database. PROSPECT uses a divide-and-conquer algorithm to find an alignment between a query protein sequence and a protein fold template, which is guaranteed to be globally optimal for its energy function. The threading algorithm presented here significantly improves the computational efficiency of our previously-published algorithm, which makes PROSPECT a practical tool even for large protein threading problems. Mathematically, PROSPECT finds a globally-optimal threading between a query sequence of n residues and a fold template of m residues and M core secondary structures in O(nm + MnN{sup 1.5C{minus}1}) time and O(nm + nN{sup C{minus}1}) space, where C, the topological complexity of the template fold as we term, is a value which characterizes the overall structure of the considered pairwise interactions in the fold; and N represents the maximum number of possible alignments between an individual core of the fold and the query sequence when its neighboring cores are already aligned. PROSPECT allows a user to incorporate known biological constraints about the query sequence during the threading process. For given constraints, the system finds a globally-optimal threading which satisfies the constraints. Currently PROSPECT can deal with constraints which reflect geometrical relationships among residues of disulfide bonds, active sites, or determined by the NOE constraints of (low-resolution) NMR spectral data.

  12. Prospective Tests of Southern California Earthquake Forecasts

    NASA Astrophysics Data System (ADS)

    Jackson, D. D.; Schorlemmer, D.; Gerstenberger, M.; Kagan, Y. Y.; Helmstetter, A.; Wiemer, S.; Field, N.

    2004-12-01

    We are testing earthquake forecast models prospectively using likelihood ratios. Several investigators have developed such models as part of the Southern California Earthquake Center's project called Regional Earthquake Likelihood Models (RELM). Various models are based on fault geometry and slip rates, seismicity, geodetic strain, and stress interactions. Here we describe the testing procedure and present preliminary results. Forecasts are expressed as the yearly rate of earthquakes within pre-specified bins of longitude, latitude, magnitude, and focal mechanism parameters. We test models against each other in pairs, which requires that both forecasts in a pair be defined over the same set of bins. For this reason we specify a standard "menu" of bins and ground rules to guide forecasters in using common descriptions. One menu category includes five-year forecasts of magnitude 5.0 and larger. Contributors will be requested to submit forecasts in the form of a vector of yearly earthquake rates on a 0.1 degree grid at the beginning of the test. Focal mechanism forecasts, when available, are also archived and used in the tests. Interim progress will be evaluated yearly, but final conclusions would be made on the basis of cumulative five-year performance. The second category includes forecasts of earthquakes above magnitude 4.0 on a 0.1 degree grid, evaluated and renewed daily. Final evaluation would be based on cumulative performance over five years. Other types of forecasts with different magnitude, space, and time sampling are welcome and will be tested against other models with shared characteristics. Tests are based on the log likelihood scores derived from the probability that future earthquakes would occur where they do if a given forecast were true [Kagan and Jackson, J. Geophys. Res.,100, 3,943-3,959, 1995]. For each pair of forecasts, we compute alpha, the probability that the first would be wrongly rejected in favor of the second, and beta, the probability

  13. Use of particle beams for lunar prospecting

    NASA Technical Reports Server (NTRS)

    Toepfer, A. J.; Eppler, D.; Friedlander, A.; Weitz, R.

    1993-01-01

    spot irradiated by the beam is less than 1 km wide along the ground track of the satellite, resulting in the potential for high resolution. The fact that the probe could be placed in polar orbit would result in global coverage of the lunar surface. The orbital particle beam probe could provide the basis for selection of sites for more detailed prospecting by surface rovers.

  14. Nanotechnology in agriculture: prospects and constraints

    PubMed Central

    Mukhopadhyay, Siddhartha S

    2014-01-01

    Attempts to apply nanotechnology in agriculture began with the growing realization that conventional farming technologies would neither be able to increase productivity any further nor restore ecosystems damaged by existing technologies back to their pristine state; in particular because the long-term effects of farming with “miracle seeds”, in conjunction with irrigation, fertilizers, and pesticides, have been questioned both at the scientific and policy levels, and must be gradually phased out. Nanotechnology in agriculture has gained momentum in the last decade with an abundance of public funding, but the pace of development is modest, even though many disciplines come under the umbrella of agriculture. This could be attributed to: a unique nature of farm production, which functions as an open system whereby energy and matter are exchanged freely; the scale of demand of input materials always being gigantic in contrast with industrial nanoproducts; an absence of control over the input nanomaterials in contrast with industrial nanoproducts (eg, the cell phone) and because their fate has to be conceived on the geosphere (pedosphere)-biosphere-hydrosphere-atmosphere continuum; the time lag of emerging technologies reaching the farmers’ field, especially given that many emerging economies are unwilling to spend on innovation; and the lack of foresight resulting from agricultural education not having attracted a sufficient number of brilliant minds the world over, while personnel from kindred disciplines might lack an understanding of agricultural production systems. If these issues are taken care of, nanotechnologic intervention in farming has bright prospects for improving the efficiency of nutrient use through nanoformulations of fertilizers, breaking yield barriers through bionanotechnology, surveillance and control of pests and diseases, understanding mechanisms of host-parasite interactions at the molecular level, development of new-generation pesticides

  15. Prospective Screening for Blunt Cerebrovascular Injuries

    PubMed Central

    Miller, Preston R.; Fabian, Timothy C.; Croce, Martin A.; Cagiannos, Catherine; Williams, J. Scott; Vang, Meng; Qaisi, Waleed G.; Felker, Richard E.; Timmons, Shelly D.

    2002-01-01

    Objective To prospectively examine outcomes associated with an aggressive screening protocol for blunt cerebrovascular injury (BCVI), and to compare the accuracy of computed tomographic angiography (CTA) and magnetic resonance angiography (MRA) versus conventional angiography with respect to BCVI diagnosis. Summary Background Data In the past 5 years, BCVI (carotid and vertebral arteries) has been recognized with increasing frequency. Initial studies described blunt carotid injuries and their associated morbidity, while more recent reports have established the devastating potential of blunt vertebral injuries. It has been suggested that early diagnosis and anticoagulation will improve outcomes and that less-invasive diagnostic techniques than conventional angiography are desirable for screening. However, there are neither established screening criteria nor studies comparing optimal diagnostic modalities. Methods The screened population included all patients with cervical spine fractures, LeFort II or III facial fractures, Horner’s syndrome, skull base fractures involving the foramen lacerum, neck soft tissue injury, or neurological abnormalities unexplained by intracranial injuries. Patients underwent screening with four-vessel cerebral angiography. During the first half of the study, patients also underwent helical CTA. Selected patients during this same period underwent MRA. At the time of diagnosis, anticoagulant or antiplatelet therapy was instituted unless clinically contraindicated. Results of this screening protocol were compared to a previously published cohort with cerebrovascular injuries (1995–1999) from the authors’ institution. Results Two hundred sixteen patients were screened over a 2-year period (3.5% of all blunt trauma admissions). Angiography identified 24 patients with carotid artery injuries (CAI) and 43 patients with vertebral artery injuries (VAI) for an overall screening yield of 29%. While the incidence of CAI remained similar between

  16. Contribution of Geophysical Prospecting to Geohazard Evaluation

    NASA Astrophysics Data System (ADS)

    Nicolich, Rinaldo

    2006-03-01

    The physical properties of the subsoil are studied using geophysical methods. These studies are always indirect, such as gravimetric, magnetometric, magnetotelluric or reflection-refraction seismic surveys and are often combined to obtain more accurate and reliable results. With these tools the oil industry commonly investigates the sedimentary basins to localize structures that may favor the accumulation of hydrocarbons. Above all, seismic prospecting allow the understanding of the underground geology, defining boundaries of the geological formations as well as mechanical and physical properties of the rocks. New cutting-edge techniques allow high quality data to be obtained in almost all geological contexts and make reflection seismic the most powerful tool in subsurface observations. The seismic method was utilized in geothermal resources investigation, research of water strategic resources, volcanic risks assessment, etc. The refraction method was the first to be used in the exploration of oil reservoirs. At present the industry employs mainly refraction seismics to study shallow formations. Conversely, university researchers have applied wide-angle reflection-refraction surveys to localize deep crustal interfaces analyzing the high amplitudes of the wide-angle reflections and the velocities obtained from the refracted signals. Moho discontinuity and velocity distribution within the crust were mapped out, indicating thickness and boundary conditions in different geological settings. The maps have been used in the analysis of geodynamical behavior and of active movements within the crust, useful for seismotectonic investigations. The further addition of the seismic reflection imaging, with deep penetration and long transects, completed multidisciplinary programs to unravel the structure of the crust with clear seismic images and models. High-resolution application of seismic has a central role in the identification and characterization of seismotectonic and

  17. Contribution of Geophysical Prospecting to Geohazard Evaluation

    SciTech Connect

    Nicolich, Rinaldo

    2006-03-23

    The physical properties of the subsoil are studied using geophysical methods. These studies are always indirect, such as gravimetric, magnetometric, magnetotelluric or reflection-refraction seismic surveys and are often combined to obtain more accurate and reliable results. With these tools the oil industry commonly investigates the sedimentary basins to localize structures that may favor the accumulation of hydrocarbons. Above all, seismic prospecting allow the understanding of the underground geology, defining boundaries of the geological formations as well as mechanical and physical properties of the rocks. New cutting-edge techniques allow high quality data to be obtained in almost all geological contexts and make reflection seismic the most powerful tool in subsurface observations. The seismic method was utilized in geothermal resources investigation, research of water strategic resources, volcanic risks assessment, etc. The refraction method was the first to be used in the exploration of oil reservoirs. At present the industry employs mainly refraction seismics to study shallow formations. Conversely, university researchers have applied wide-angle reflection-refraction surveys to localize deep crustal interfaces analyzing the high amplitudes of the wide-angle reflections and the velocities obtained from the refracted signals. Moho discontinuity and velocity distribution within the crust were mapped out, indicating thickness and boundary conditions in different geological settings. The maps have been used in the analysis of geodynamical behavior and of active movements within the crust, useful for seismotectonic investigations. The further addition of the seismic reflection imaging, with deep penetration and long transects, completed multidisciplinary programs to unravel the structure of the crust with clear seismic images and models. High-resolution application of seismic has a central role in the identification and characterization of seismotectonic and

  18. Ocular onchocerciasis: current management and future prospects

    PubMed Central

    Babalola, Olufemi Emmanuel

    2011-01-01

    This paper reviews the current management of onchocerciasis and its future prospects. Onchocerciasis is a disease affecting millions of people in Africa, South and Central America, and Yemen. It is spread by the blackfly as a vector and caused by the filarial nematode, Onchocerca volvulus. A serious attempt was made by the Onchocerciasis Control Program between 1975 and 2002 to eliminate the vector in eleven of the endemic countries in West Africa, and with remarkable success. Formerly, the treatment was with diethyl carbamazine for the microfilaria and suramin for the adult worm. These drugs are now known to be toxic and unsuitable for mass distribution. In particular, they precipitate optic nerve disease. With the discovery of ivermectin, a much safer microfilaricide, and the decision of Merck to distribute the drug free of charge for as long as needed, the strategy of control switched to mass drug administration through community-directed treatment with ivermectin. So far, millions have received this annual or biannual treatment through the African Program for Onchocerciasis Control and the Onchocerciasis Elimination Program for the Americas. However, the problem with ivermectin is that it is a monotherapy microfilaricide which has limited effect on the adult worm, and thus will need to be continued for the life span of the adult worm, which may last up to 15 years. There are also early reports of resistance. Serious encephalopathy and death may occur when ivermectin is used in subjects heavily infested with loiasis. It seems unlikely that a break in transmission will occur with community-directed treatment with ivermectin in Africa because of population migrations and the highly efficient vector, but in the Americas some countries such as Columbia and the Oaxaca focus in Mexico have reported eradication. Vector control is only now applicable in selected situations, and particularly to control the nuisance value of the blackfly. Trials are ongoing for

  19. A prospective earthquake forecast experiment for Japan

    NASA Astrophysics Data System (ADS)

    Yokoi, Sayoko; Nanjo, Kazuyoshi; Tsuruoka, Hiroshi; Hirata, Naoshi

    2013-04-01

    One major focus of the current Japanese earthquake prediction research program (2009-2013) is to move toward creating testable earthquake forecast models. For this purpose we started an experiment of forecasting earthquake activity in Japan under the framework of the Collaboratory for the Study of Earthquake Predictability (CSEP) through an international collaboration. We established the CSEP Testing Centre, an infrastructure to encourage researchers to develop testable models for Japan, and to conduct verifiable prospective tests of their model performance. On 1 November in 2009, we started the 1st earthquake forecast testing experiment for the Japan area. We use the unified JMA catalogue compiled by the Japan Meteorological Agency as authorized catalogue. The experiment consists of 12 categories, with 4 testing classes with different time spans (1 day, 3 months, 1 year, and 3 years) and 3 testing regions called All Japan, Mainland, and Kanto. A total of 91 models were submitted to CSEP-Japan, and are evaluated with the CSEP official suite of tests about forecast performance. In this presentation, we show the results of the experiment of the 3-month testing class for 5 rounds. HIST-ETAS7pa, MARFS and RI10K models corresponding to the All Japan, Mainland and Kanto regions showed the best score based on the total log-likelihood. It is also clarified that time dependency of model parameters is no effective factor to pass the CSEP consistency tests for the 3-month testing class in all regions. Especially, spatial distribution in the All Japan region was too difficult to pass consistency test due to multiple events at a bin. Number of target events for a round in the Mainland region tended to be smaller than model's expectation during all rounds, which resulted in rejections of consistency test because of overestimation. In the Kanto region, pass ratios of consistency tests in each model showed more than 80%, which was associated with good balanced forecasting of event

  20. Nanotechnology in agriculture: prospects and constraints.

    PubMed

    Mukhopadhyay, Siddhartha S

    2014-01-01

    Attempts to apply nanotechnology in agriculture began with the growing realization that conventional farming technologies would neither be able to increase productivity any further nor restore ecosystems damaged by existing technologies back to their pristine state; in particular because the long-term effects of farming with "miracle seeds", in conjunction with irrigation, fertilizers, and pesticides, have been questioned both at the scientific and policy levels, and must be gradually phased out. Nanotechnology in agriculture has gained momentum in the last decade with an abundance of public funding, but the pace of development is modest, even though many disciplines come under the umbrella of agriculture. This could be attributed to: a unique nature of farm production, which functions as an open system whereby energy and matter are exchanged freely; the scale of demand of input materials always being gigantic in contrast with industrial nanoproducts; an absence of control over the input nanomaterials in contrast with industrial nanoproducts (eg, the cell phone) and because their fate has to be conceived on the geosphere (pedosphere)-biosphere-hydrosphere-atmosphere continuum; the time lag of emerging technologies reaching the farmers' field, especially given that many emerging economies are unwilling to spend on innovation; and the lack of foresight resulting from agricultural education not having attracted a sufficient number of brilliant minds the world over, while personnel from kindred disciplines might lack an understanding of agricultural production systems. If these issues are taken care of, nanotechnologic intervention in farming has bright prospects for improving the efficiency of nutrient use through nanoformulations of fertilizers, breaking yield barriers through bionanotechnology, surveillance and control of pests and diseases, understanding mechanisms of host-parasite interactions at the molecular level, development of new-generation pesticides and

  1. Infants' prospective control during object manipulation in an uncertain environment.

    PubMed

    Gottwald, Janna M; Gredebäck, Gustaf

    2015-08-01

    This study investigates how infants use visual and sensorimotor information to prospectively control their actions. We gave 14-month-olds two objects of different weight and observed how high they were lifted, using a Qualisys Motion Capture System. In one condition, the two objects were visually distinct (different color condition) in another they were visually identical (same color condition). Lifting amplitudes of the first movement unit were analyzed in order to assess prospective control. Results demonstrate that infants lifted a light object higher than a heavy object, especially when vision could be used to assess weight (different color condition). When being confronted with two visually identical objects of different weight (same color condition), infants showed a different lifting pattern than what could be observed in the different color condition, expressed by a significant interaction effect between object weight and color condition on lifting amplitude. These results indicate that (a) visual information about object weight can be used to prospectively control lifting actions and that (b) infants are able to prospectively control their lifting actions even without visual information about object weight. We argue that infants, in the absence of reliable visual information about object weight, heighten their dependence on non-visual information (tactile, sensorimotor memory) in order to estimate weight and pre-adjust their lifting actions in a prospective manner. PMID:25963753

  2. Diagnosing breast cancer using Raman spectroscopy: prospective analysis

    PubMed Central

    Haka, Abigail S.; Volynskaya, Zoya; Gardecki, Joseph A.; Nazemi, Jon; Shenk, Robert; Wang, Nancy; Dasari, Ramachandra R.; Fitzmaurice, Maryann; Feld, Michael S.

    2009-01-01

    We present the first prospective test of Raman spectroscopy in diagnosing normal, benign, and malignant human breast tissues. Prospective testing of spectral diagnostic algorithms allows clinicians to accurately assess the diagnostic information contained in, and any bias of, the spectroscopic measurement. In previous work, we developed an accurate, internally validated algorithm for breast cancer diagnosis based on analysis of Raman spectra acquired from fresh-frozen in vitro tissue samples. We currently evaluate the performance of this algorithm prospectively on a large ex vivo clinical data set that closely mimics the in vivo environment. Spectroscopic data were collected from freshly excised surgical specimens, and 129 tissue sites from 21 patients were examined. Prospective application of the algorithm to the clinical data set resulted in a sensitivity of 83%, a specificity of 93%, a positive predictive value of 36%, and a negative predictive value of 99% for distinguishing cancerous from normal and benign tissues. The performance of the algorithm in different patient populations is discussed. Sources of bias in the in vitro calibration and ex vivo prospective data sets, including disease prevalence and disease spectrum, are examined and analytical methods for comparison provided. PMID:19895125

  3. Diagnosing breast cancer using Raman spectroscopy: prospective analysis

    NASA Astrophysics Data System (ADS)

    Haka, Abigail S.; Volynskaya, Zoya; Gardecki, Joseph A.; Nazemi, Jon; Shenk, Robert; Wang, Nancy; Dasari, Ramachandra R.; Fitzmaurice, Maryann; Feld, Michael S.

    2009-09-01

    We present the first prospective test of Raman spectroscopy in diagnosing normal, benign, and malignant human breast tissues. Prospective testing of spectral diagnostic algorithms allows clinicians to accurately assess the diagnostic information contained in, and any bias of, the spectroscopic measurement. In previous work, we developed an accurate, internally validated algorithm for breast cancer diagnosis based on analysis of Raman spectra acquired from fresh-frozen in vitro tissue samples. We currently evaluate the performance of this algorithm prospectively on a large ex vivo clinical data set that closely mimics the in vivo environment. Spectroscopic data were collected from freshly excised surgical specimens, and 129 tissue sites from 21 patients were examined. Prospective application of the algorithm to the clinical data set resulted in a sensitivity of 83%, a specificity of 93%, a positive predictive value of 36%, and a negative predictive value of 99% for distinguishing cancerous from normal and benign tissues. The performance of the algorithm in different patient populations is discussed. Sources of bias in the in vitro calibration and ex vivo prospective data sets, including disease prevalence and disease spectrum, are examined and analytical methods for comparison provided.

  4. Oil prospection using the tectonic plate model

    NASA Astrophysics Data System (ADS)

    Pointu, Agnès

    2015-04-01

    Tectonic plate models are an intellectual setting to understand why oil deposits are so uncommon and unequally distributed and how models can be used in actual oil and gas prospection. In this case, we use the example of the Ghawar deposit (Saudi Arabia), one of the largest producing well in the world. In the first step, physical properties of rocks composing the oil accumulation are studied by laboratory experiments. Students estimate the porosity of limestone and clay by comparing their mass before and after water impregnation. Results are compared to microscopic observations. Thus, students come to the conclusion that oil accumulations are characterized by superposition of rocks with very different properties: a rich organic source rock (clays of the Hanifa formation), a porous reservoir rock to store the petroleum in (limestones of the Arab formation) and above an impermeable rock with very low porosity (evaporites of the Tithonien). In previous lessons, students have seen that organic matter is usually mineralized by bacteria and that this preservation requires particular conditions. The aim is to explain why biomass production has been so important during the deposit of the clays of the Hanifa formation. Tectonic plate models make it possible to estimate the location of the Arabian Peninsula during Jurassic times (age of Hanifa formation). In order to understand why the paleo-location of the Arabian Peninsula is important to preserve organic matter, students have different documents showing: - That primary production of biomass by phytoplankton is favored by climatic conditions, - That the position of continents determinate the ocean currents and the positions of upwelling zones and zones where organic matter will be able to be preserved, - That north of the peninsula there was a passive margin during Jurassic times. An actual seismic line is studied in order to highlight that this extensive area allowed thick sedimentary deposits to accumulate and that fast

  5. A Vertical Differential Configuration in GPR prospecting

    NASA Astrophysics Data System (ADS)

    Persico, Raffaele; Pochanin, Gennadiy; Varianytsia-Roshchupkina, Liudmyla; Catapano, Ilaria; Gennarelli, Gianluca; Soldovieri, Francesco

    2015-04-01

    small objects and interfaces. This configuration can be labeled as a vertical differential configuration. At the conference, the reconstruction capabilities of this differential GPR configuration system will be discussed by means of an analysis of the problem based on a properly designed microwave tomographic inversion approach. The proposed approach exploits the Born approximation and faces the imaging as the solution of a linear inverse scattering problem. In this way, the problem of the local minima is avoided [7] and it is possible to impose some regularization to the problem in an easy way problem [8-9]. At the conference, a theoretical analysis of the mathematical propserties of the scattering operator under the vertical differential configuration will be presented showing that, with respect to the horizontal differential configuration, the vertical one allows to reject the direct coupling between the antennas but not the coupling of the antennas occurring through the air-soil interface. On the other hand, the filtering properties of the operator at hand con be considered, let say, less severe in some cases. At the conference, both some numerical and experimental results will be shown. References [1] R. Persico, F. Soldovieri, "Effects of the background removal in linear inverse scattering", IEEE Trans. Geosci. Remote Sens, vol. 46, pp. 1104-1114, April 2008. [2] L. Gurel, U. Oguz, "Three-Dimensional FDTD modeling of a ground penetrating radar", IEEE Trans. Geosci. Remote Sens, vol. 38, pp. 1513-1521, July 2000. [3] L. Gurel, U. Oguz, "Optimization of the transmitter-receiver separation in the ground penetrating radar", IEEE Trans. Antennas and Propag., vol. 51, no 3, pp. 362-370, March 2003. [4] R. Persico, F. Soldovieri, "A microwave tomography approach for a differential configuration in GPR prospecting", IEEE Trans. Antennas and Propag., vol. 54, pp. 3541 - 3548, 2006. [5] Y.A. Kopylov, S.A. Masalov, G.P. Pochanin, "The way of isolation between transmitting

  6. Cost-shifting under cost reimbursement and prospective payment.

    PubMed

    Foster, R W

    1985-09-01

    Cost-shifting is seen as a three-way phenomenon involving hospital interests as well as those of government and private patients. Without economies of scale, private patients are indifferent to government policies unless underpayment leads to hospital bankruptcy. In the presence of economies of scale, private patients benefit from reductions in government payment under either cost reimbursement or prospective payment. Their interest in a shift to prospective payment depends upon the hospital's location on its cost curve. Hospitals benefit from increases in payment rates in all cases, but benefit from a shift to prospective payment only if operating in a region of declining average costs. The conventional view of cost-shifting is inconsistent with profit maximization and may be inappropriate for many voluntary hospitals as well. PMID:10300555

  7. Resource depletion does not influence prospective memory in college students

    PubMed Central

    Talley Shelton, Jill; Cahill, Michael J.; Mullet, Hillary G.; Scullin, Michael K.; Einstein, Gilles O.; McDaniel, Mark A.

    2013-01-01

    This paper reports an experiment designed to investigate the potential influence of prior acts of self-control on subsequent prospective memory performance. College undergraduates (n = 146) performed either a cognitively depleting initial task (e.g., mostly incongruent Stroop task) or a less resource-consuming version of that task (e.g., all congruent Stroop task). Subsequently, participants completed a prospective memory task that required attentionally demanding monitoring processes. The results demonstrated that prior acts of self-control do not impair the ability to execute a future intention in college-aged adults. We conceptually replicated these results in three additional depletion and prospective memory experiments. This research extends a growing number of studies demonstrating the boundary conditions of the resource depletion effect in cognitive tasks. PMID:24021851

  8. Optimization of Pulse Shape Discrimination of PROSPECT Liquid Scintillator Signals

    NASA Astrophysics Data System (ADS)

    Han, Ke; Prospect Collaboration

    2015-04-01

    PROSPECT, A Precision Oscillation and Spectrum Experiment, will use a segmented Li-6 doped liquid scintillator detector for precision measurement of the reactor anti-neutrino spectrum at the High Flux Isotope Reactor at Oak Ridge National Laboratory. PROSPECT also searches for very short baseline neutrino oscillation, an indication of the existence of eV-scale sterile neutrinos. Pulse shape analysis of the prompt anti-neutino signal and delayed neutron capture on Li-6 signal will greatly suppress background sources such as fast neutrons and accidental coincidence of gammas. In this talk, I will discuss different pulse shape parameters used in PROSPECT prototype detectors and multivariate optimization of event selection cuts based on those parameters.

  9. PROSPECT: the Precision Reactor Oscillation and Spectrum Experiment

    NASA Astrophysics Data System (ADS)

    Jones, Donald; Prospect Collaboration

    2016-03-01

    PROSPECT is a phased experiment consisting of segmented Li-loaded liquid scintillator antineutrino detectors designed to probe short-baseline neutrino oscillations and precisely measure the reactor antineutrino spectrum. The experiment will be located at the High Flux Isotope Reactor (HFIR) at Oak Ridge National Lab. The first phase is a movable 3 tonne detector located 7-9 m from the compact, highly enriched uranium core. Over the past three years, PROSPECT has deployed multiple prototype detectors at HFIR to understand the local background environment and demonstrate active and passive background rejection. A two-segment prototype has been developed that demonstrates critical subsystems of the full detector. Measuring the neutrino spectrum from 235U will give insight to the recent spectral discrepancies and provide an important benchmark for future reactor experiments. As a high statistics experiment, PROSPECT will probe the sterile neutrino best-fit region within one year of operation at HFIR.

  10. Prospective representation of navigational goals in the human hippocampus.

    PubMed

    Brown, Thackery I; Carr, Valerie A; LaRocque, Karen F; Favila, Serra E; Gordon, Alan M; Bowles, Ben; Bailenson, Jeremy N; Wagner, Anthony D

    2016-06-10

    Mental representation of the future is a fundamental component of goal-directed behavior. Computational and animal models highlight prospective spatial coding in the hippocampus, mediated by interactions with the prefrontal cortex, as a putative mechanism for simulating future events. Using whole-brain high-resolution functional magnetic resonance imaging and multi-voxel pattern classification, we tested whether the human hippocampus and interrelated cortical structures support prospective representation of navigational goals. Results demonstrated that hippocampal activity patterns code for future goals to which participants subsequently navigate, as well as for intervening locations along the route, consistent with trajectory-specific simulation. The strength of hippocampal goal representations covaried with goal-related coding in the prefrontal, medial temporal, and medial parietal cortex. Collectively, these data indicate that a hippocampal-cortical network supports prospective simulation of navigational events during goal-directed planning. PMID:27284194

  11. Resource depletion does not influence prospective memory in college students.

    PubMed

    Shelton, Jill Talley; Cahill, Michael J; Mullet, Hillary G; Scullin, Michael K; Einstein, Gilles O; McDaniel, Mark A

    2013-12-01

    This paper reports an experiment designed to investigate the potential influence of prior acts of self-control on subsequent prospective memory performance. College undergraduates (n=146) performed either a cognitively depleting initial task (e.g., mostly incongruent Stroop task) or a less resource-consuming version of that task (e.g., all congruent Stroop task). Subsequently, participants completed a prospective memory task that required attentionally demanding monitoring processes. The results demonstrated that prior acts of self-control do not impair the ability to execute a future intention in college-aged adults. We conceptually replicated these results in three additional depletion and prospective memory experiments. This research extends a growing number of studies demonstrating the boundary conditions of the resource depletion effect in cognitive tasks. PMID:24021851

  12. Non-territorial nightingales prospect territories during the dawn chorus.

    PubMed

    Amrhein, Valentin; Kunc, Hansjoerg P; Naguib, Marc

    2004-05-01

    Male songbirds usually sing when they have occupied a territory, but the territory prospecting of non-territorial males is more elusive and has been rarely studied. Here, we simulated newly arriving, non-territorial males by translocating unmated male nightingales (Luscinia megarhynchos) to our study site. We show that territory prospecting of translocated males was largely confined to the hour before sunrise. The radio-tagged males made extensive excursions visiting several singing males at dawn, but after dawn they remained stationary outside occupied territories. As in many other songbird species, dawn was also the time when resident males sang the most. These results suggest that nonterritorial male nightingales use the dawn chorus to assess singing residents or territory occupancy. For resident males, dawn singing may be important to announce territory occupancy to prospecting males and may thus play a role in territory maintenance. PMID:15252973

  13. Non-territorial nightingales prospect territories during the dawn chorus.

    PubMed Central

    Amrhein, Valentin; Kunc, Hansjoerg P; Naguib, Marc

    2004-01-01

    Male songbirds usually sing when they have occupied a territory, but the territory prospecting of non-territorial males is more elusive and has been rarely studied. Here, we simulated newly arriving, non-territorial males by translocating unmated male nightingales (Luscinia megarhynchos) to our study site. We show that territory prospecting of translocated males was largely confined to the hour before sunrise. The radio-tagged males made extensive excursions visiting several singing males at dawn, but after dawn they remained stationary outside occupied territories. As in many other songbird species, dawn was also the time when resident males sang the most. These results suggest that nonterritorial male nightingales use the dawn chorus to assess singing residents or territory occupancy. For resident males, dawn singing may be important to announce territory occupancy to prospecting males and may thus play a role in territory maintenance. PMID:15252973

  14. Surface reflectance and material studies for the PROSPECT Experiment

    NASA Astrophysics Data System (ADS)

    Bowes, Alyssa; Prospect Collaboration

    2015-10-01

    The PROSPECT Experiment aims to probe the existence of sterile neutrino oscillations by measuring the energy spectrum of antineutrinos emanating from nuclear reactors in a matrix of optically separated target scintillator cells at a variety of reactor-detector baselines. By measuring the absolute spectrum we also learn about reactors and what isotopes they produce. In order to properly model and optimise PROSPECT's energy resolution and background rejection capabilities, the reflective properties of the cell surfaces must be well understood. To address this, a study of various reflective surfaces under consideration to be used in the detector was conducted at non-normal incident angles through liquid using a custom-built laser-based reflectance measurement system. This presentation will describe the apparatus, reflectance measurements, and implications for the PROSPECT optical cell performance. Future plans to incorporate measurements into existing optical simulations will also be discussed. Funding provided by Illinois Institute of Technology College of Science.

  15. Prospective prediction of husband marital aggression within newlywed couples.

    PubMed

    Leonard, K E; Senchak, M

    1996-08-01

    This study prospectively examined a social interactional model of husband marital aggression. Young couples were assessed at the time of their 1st marriage with respect to marital conflict styles, alcohol consumption, hostility, gender identity, perceived power inequity, and history of family violence. Couples were reassessed at their 1-year anniversary, and information concerning marital aggression was collected. Most of the constructs were prospectively related to husband aggression, but these relationships were largely mediated through marital conflict styles and husband alcohol consumption, which in turn were influenced by husband's hostility, gender identity, and perceived power inequity. PMID:8772007

  16. Policy issues related to prospective payment for pediatric hospitalization

    PubMed Central

    Payne, Susan M. C.; Restuccia, Joseph D.

    1987-01-01

    Children's hospitals have been excluded from the Medicare prospective payment system (PPS) because of concerns over the applicability of the DRG case-mix system and PPS payment weights to pediatric hospitalization. Nevertheless, DRG-based payment systems are being adopted by State Medicaid agencies and private third-party payers, and the Health Care Financing Administration has been mandated to report to Congress on the feasibility of including children's hospitals in the Federal PPS. This article summarizes policy research on this issue and discusses options in the design of prospective payment systems for pediatric hospitalization. PMID:10312273

  17. International prospects for clean coal technologies (Focus on Asia)

    SciTech Connect

    Gallaspy, D.T.

    1997-12-31

    The purpose of this paper is to propose Asia as a focus market for commercialization of CCT`s; describe the principles for successful penetration of CCT`s in the international market; and summarize prospects for CCT`s in Asia and other international markets. The paper outlines the following: Southern Company`s clean coal commitment; acquisition of Consolidated Electric Power Asia (CEPA); the prospects for CCT`s internationally; requirements for CCT`s widespread commercialization; CEPA`s application of CCT`s; and gas turbine power plants as a perfect example of a commercialization driver.

  18. International cooperation in planetary exploration: Past success and future prospects

    NASA Astrophysics Data System (ADS)

    Rosendhal, Jeffrey D.

    A review is given of the ways in which the National Aeronautics and Space Administration (NASA) has participated in international efforts to explore the solar system. Past examples of successful international cooperative programs are described. Prospects for future cooperative efforts are discussed with emphasis placed on current events, issues, and trends which are likely to affect possibilities for cooperation over the next 5 to 10 years. Key factors which will play a major role in shaping future prospects for cooperation include the move towards balancing the budget in the United States and the impact of the Challenger accident on the NASA program.

  19. Niger Delta basin oil and gas prospects evaluated

    SciTech Connect

    Not Available

    1992-09-28

    This paper reports that an ambitious project to map African oil and gas prospects has produced its first findings in a report on the Niger Delta basin. In Nigeria, 73% of discoveries are smaller than 50 million bbl, with a 42% success rate for wildcats. There are 'out of round prospects off Nigeria, too, with a number of companies currently in discussions. Petroconsultants the there are further opportunities for exploration in the Northern Onshore Fringe Belt, which has an estimated potential of 500 million bbl of reserves. Three OPLs are open.

  20. Outgassing and contamination properties of prospective Apollo Telescope Mount materials.

    NASA Technical Reports Server (NTRS)

    Poehlmann, H. C.

    1972-01-01

    Some of the test techniques used to evaluate the outgassing and contamination characteristics of prospective Apollo telescope mount (ATM) materials are reviewed. These include a screening test providing information on weight losses of materials, weights of their condensed outgas products, and white-light scattered by the condensed products. They also include an ultraviolet-region screening test and a comprehensive continuous in situ weight-loss test. Examples are presented of data obtained from each of the tests on various prospective ATM materials.