Sample records for account blocked property

  1. 31 CFR 510.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Blocked account; blocked property. 510.301 Section 510.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued... Definitions § 510.301 Blocked account; blocked property. The terms blocked account and blocked property shall...

  2. 31 CFR 510.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Blocked account; blocked property. 510.301 Section 510.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued... Definitions § 510.301 Blocked account; blocked property. The terms blocked account and blocked property shall...

  3. 31 CFR 510.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Blocked account; blocked property. 510.301 Section 510.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued... Definitions § 510.301 Blocked account; blocked property. The terms blocked account and blocked property shall...

  4. 31 CFR 598.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    .... 598.301 Section 598.301 Money and Finance: Treasury Regulations Relating to Money and Finance... REGULATIONS General Definitions § 598.301 Blocked account; blocked property. The terms blocked account and blocked property mean any account or property subject to § 598.202 held in the name of a specially...

  5. 31 CFR 598.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Blocked account; blocked property. 598.301 Section 598.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued... REGULATIONS General Definitions § 598.301 Blocked account; blocked property. The terms blocked account and...

  6. 31 CFR 598.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Blocked account; blocked property. 598.301 Section 598.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued... REGULATIONS General Definitions § 598.301 Blocked account; blocked property. The terms blocked account and...

  7. 31 CFR 598.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Blocked account; blocked property. 598.301 Section 598.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued... REGULATIONS General Definitions § 598.301 Blocked account; blocked property. The terms blocked account and...

  8. 31 CFR 598.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Blocked account; blocked property. 598.301 Section 598.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued... REGULATIONS General Definitions § 598.301 Blocked account; blocked property. The terms blocked account and...

  9. 31 CFR 594.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Blocked account; blocked property. 594.301 Section 594.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL TERRORISM SANCTIONS...

  10. 31 CFR 545.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Blocked account; blocked property. 545.301 Section 545.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TALIBAN (AFGHANISTAN) SANCTIONS...

  11. 31 CFR 551.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Blocked account; blocked property. 551.301 Section 551.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY SOMALIA SANCTIONS REGULATIONS...

  12. 31 CFR 594.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Blocked account; blocked property. 594.301 Section 594.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL TERRORISM SANCTIONS REGULATIONS...

  13. 31 CFR 594.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Blocked account; blocked property. 594.301 Section 594.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL TERRORISM SANCTIONS REGULATIONS...

  14. 31 CFR 594.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Blocked account; blocked property. 594.301 Section 594.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL TERRORISM SANCTIONS REGULATIONS...

  15. 31 CFR 546.302 - Blocked account; blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Blocked account; blocked property. 546.302 Section 546.302 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DARFUR SANCTIONS REGULATIONS General...

  16. 31 CFR 593.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Blocked account; blocked property. 593.301 Section 593.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY FORMER LIBERIAN REGIME OF CHARLES...

  17. 31 CFR 510.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Blocked account; blocked property. 510.301 Section 510.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY NORTH KOREA SANCTIONS REGULATIONS General...

  18. 31 CFR 547.302 - Blocked account; blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Blocked account; blocked property. 547.302 Section 547.302 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO...

  19. 31 CFR 593.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Blocked account; blocked property. 593.301 Section 593.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY FORMER LIBERIAN REGIME OF CHARLES TAYLOR...

  20. 31 CFR 593.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Blocked account; blocked property. 593.301 Section 593.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY FORMER LIBERIAN REGIME OF CHARLES TAYLOR...

  1. 31 CFR 593.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Blocked account; blocked property. 593.301 Section 593.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY FORMER LIBERIAN REGIME OF CHARLES TAYLOR...

  2. 31 CFR 593.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Blocked account; blocked property. 593.301 Section 593.301 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY FORMER LIBERIAN REGIME OF CHARLES TAYLOR...

  3. 31 CFR 547.302 - Blocked account; blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Blocked account; blocked property. 547.302 Section 547.302 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS...

  4. 31 CFR 547.302 - Blocked account; blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Blocked account; blocked property. 547.302 Section 547.302 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS...

  5. 31 CFR 547.302 - Blocked account; blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Blocked account; blocked property. 547.302 Section 547.302 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS...

  6. 31 CFR 547.302 - Blocked account; blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Blocked account; blocked property. 547.302 Section 547.302 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS...

  7. 31 CFR 537.209 - Expenses of maintaining blocked property; liquidation of blocked account.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Expenses of maintaining blocked property; liquidation of blocked account. 537.209 Section 537.209 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY...

  8. 31 CFR 537.209 - Expenses of maintaining blocked property; liquidation of blocked account.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Expenses of maintaining blocked property; liquidation of blocked account. 537.209 Section 537.209 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY...

  9. 31 CFR 570.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Government of Libya or any other person whose property and interests in property are blocked pursuant to § 570.201, or in which the Government of Libya or such person has an interest, and with respect to which...

  10. 31 CFR 570.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Government of Libya or any other person whose property and interests in property are blocked pursuant to § 570.201, or in which the Government of Libya or such person has an interest, and with respect to which...

  11. 31 CFR 570.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Government of Libya or any other person whose property and interests in property are blocked pursuant to § 570.201, or in which the Government of Libya or such person has an interest, and with respect to which...

  12. 31 CFR 570.301 - Blocked account; blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Government of Libya or any other person whose property and interests in property are blocked pursuant to § 570.201, or in which the Government of Libya or such person has an interest, and with respect to which...

  13. 31 CFR 595.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... TERRORISM SANCTIONS REGULATIONS Prohibitions § 595.203 Holding of certain types of blocked property in... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 595.203 Section 595.203 Money and Finance: Treasury Regulations...

  14. 31 CFR 575.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... IRAQI SANCTIONS REGULATIONS Prohibitions § 575.203 Holding of certain types of blocked property in... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 575.203 Section 575.203 Money and Finance: Treasury Regulations...

  15. 31 CFR 595.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... TERRORISM SANCTIONS REGULATIONS Prohibitions § 595.203 Holding of certain types of blocked property in... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 595.203 Section 595.203 Money and Finance: Treasury Regulations...

  16. 31 CFR 595.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... TERRORISM SANCTIONS REGULATIONS Prohibitions § 595.203 Holding of certain types of blocked property in... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 595.203 Section 595.203 Money and Finance: Treasury Regulations...

  17. 31 CFR 595.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... TERRORISM SANCTIONS REGULATIONS Prohibitions § 595.203 Holding of certain types of blocked property in... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 595.203 Section 595.203 Money and Finance: Treasury Regulations...

  18. 31 CFR 595.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... TERRORISM SANCTIONS REGULATIONS Prohibitions § 595.203 Holding of certain types of blocked property in... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 595.203 Section 595.203 Money and Finance: Treasury Regulations...

  19. 31 CFR 536.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 536.203 Section 536.203 Money and Finance: Treasury Regulations... NARCOTICS TRAFFICKING SANCTIONS REGULATIONS Prohibitions § 536.203 Holding of certain types of blocked...

  20. 31 CFR 536.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 536.203 Section 536.203 Money and Finance: Treasury Regulations... NARCOTICS TRAFFICKING SANCTIONS REGULATIONS Prohibitions § 536.203 Holding of certain types of blocked...

  1. 31 CFR 536.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 536.203 Section 536.203 Money and Finance: Treasury Regulations... NARCOTICS TRAFFICKING SANCTIONS REGULATIONS Prohibitions § 536.203 Holding of certain types of blocked...

  2. 31 CFR 536.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 536.203 Section 536.203 Money and Finance: Treasury Regulations... NARCOTICS TRAFFICKING SANCTIONS REGULATIONS Prohibitions § 536.203 Holding of certain types of blocked...

  3. 31 CFR 536.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 536.203 Section 536.203 Money and Finance: Treasury Regulations... NARCOTICS TRAFFICKING SANCTIONS REGULATIONS Prohibitions § 536.203 Holding of certain types of blocked...

  4. 31 CFR 585.203 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Holding of certain types of blocked property in interest-bearing accounts. 585.203 Section 585.203 Money and Finance: Treasury Regulations... OF BOSNIA AND HERZEGOVINA SANCTIONS REGULATIONS Prohibitions § 585.203 Holding of certain types of...

  5. 31 CFR 588.205 - Expenses of maintaining blocked property; liquidation of blocked account.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... WESTERN BALKANS STABILIZATION REGULATIONS Prohibitions § 588.205 Expenses of maintaining blocked property... license or permit granted before 12:01 a.m., eastern daylight time, June 27, 2001, all expenses incident...

  6. 31 CFR 515.205 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... CUBAN ASSETS CONTROL REGULATIONS Prohibitions § 515.205 Holding of certain types of blocked property in... involved. (h) The following types of property are subject to paragraphs (a) and (b) of this section: (1... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Holding of certain types of blocked...

  7. 31 CFR 515.205 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... CUBAN ASSETS CONTROL REGULATIONS Prohibitions § 515.205 Holding of certain types of blocked property in... involved. (h) The following types of property are subject to paragraphs (a) and (b) of this section: (1... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Holding of certain types of blocked...

  8. 31 CFR 515.205 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... CUBAN ASSETS CONTROL REGULATIONS Prohibitions § 515.205 Holding of certain types of blocked property in... involved. (h) The following types of property are subject to paragraphs (a) and (b) of this section: (1... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Holding of certain types of blocked...

  9. 31 CFR 515.205 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... CUBAN ASSETS CONTROL REGULATIONS Prohibitions § 515.205 Holding of certain types of blocked property in... involved. (h) The following types of property are subject to paragraphs (a) and (b) of this section: (1... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Holding of certain types of blocked...

  10. 31 CFR 500.205 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... FOREIGN ASSETS CONTROL REGULATIONS Prohibitions § 500.205 Holding of certain types of blocked property in... amounts involved. (h) The following types of property are subject to paragraphs (a) and (b) of this... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Holding of certain types of blocked...

  11. 31 CFR 515.205 - Holding of certain types of blocked property in interest-bearing accounts.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... CUBAN ASSETS CONTROL REGULATIONS Prohibitions § 515.205 Holding of certain types of blocked property in... involved. (h) The following types of property are subject to paragraphs (a) and (b) of this section: (1... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Holding of certain types of blocked...

  12. 31 CFR 510.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... accounts in U.S. financial institutions. 510.504 Section 510.504 Money and Finance: Treasury Regulations... NORTH KOREA SANCTIONS REGULATIONS Licenses, Authorizations, and Statements of Licensing Policy § 510.504... of credit in which a person whose property and interests in property are blocked pursuant to § 510...

  13. 31 CFR 510.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... accounts in U.S. financial institutions. 510.504 Section 510.504 Money and Finance: Treasury Regulations... NORTH KOREA SANCTIONS REGULATIONS Licenses, Authorizations, and Statements of Licensing Policy § 510.504... of credit in which a person whose property and interests in property are blocked pursuant to § 510...

  14. 31 CFR 510.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... accounts in U.S. financial institutions. 510.504 Section 510.504 Money and Finance: Treasury Regulations... NORTH KOREA SANCTIONS REGULATIONS Licenses, Authorizations, and Statements of Licensing Policy § 510.504... of credit in which a person whose property and interests in property are blocked pursuant to § 510...

  15. 31 CFR 586.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 586.504 Section 586.504 Money and Finance: Treasury Regulations.... financial institutions. Any payment of funds or transfer of credit in which any person whose property and... or control of a U.S. financial institution, must be blocked in an account on the books of that...

  16. 31 CFR 585.503 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 585.503 Section 585.503 Money and Finance: Treasury Regulations... Policy § 585.503 Payments and transfers to blocked accounts in U.S. financial institutions. (a) Any... account in a U.S. financial institution is authorized, provided that a transfer from a blocked account...

  17. 31 CFR 595.503 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 595.503 Section 595.503 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. (a) Any payment of funds or.... financial institution is authorized, provided that a transfer from a blocked account pursuant to this...

  18. 31 CFR 597.503 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 597.503 Section 597.503 Money and Finance: Treasury Regulations... Licensing Policy § 597.503 Payments and transfers to blocked accounts in U.S. financial institutions. (a... financial institution into a blocked account in a U.S. financial institution is authorized, provided that a...

  19. 31 CFR 536.503 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 536.503 Section 536.503 Money and Finance: Treasury Regulations... § 536.503 Payments and transfers to blocked accounts in U.S. financial institutions. (a) Any payment of... a U.S. financial institution is authorized, provided that a transfer from a blocked account pursuant...

  20. 31 CFR 593.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 593.504 Section 593.504 Money and Finance: Treasury Regulations... Licensing Policy § 593.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any.... financial institution must be blocked in an account on the books of that financial institution. A transfer...

  1. 31 CFR 545.503 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 545.503 Section 545.503 Money and Finance: Treasury Regulations... § 545.503 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of.... financial institution, must be blocked in an account on the books of that financial institution. A transfer...

  2. 31 CFR 544.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 544.504 Section 544.504 Money and Finance: Treasury Regulations... Licensing Policy § 544.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any.... financial institution must be blocked in an account on the books of that financial institution. A transfer...

  3. Building blocks for social accountability: a conceptual framework to guide medical schools.

    PubMed

    Preston, Robyn; Larkins, Sarah; Taylor, Judy; Judd, Jenni

    2016-08-26

    This paper presents a conceptual framework developed from empirical evidence, to guide medical schools aspiring towards greater social accountability. Using a multiple case study approach, seventy-five staff, students, health sector representatives and community members, associated with four medical schools, participated in semi-structured interviews. Two schools were in Australia and two were in the Philippines. These schools were selected because they were aspiring to be socially accountable. Data was collected through on-site visits, field notes and a documentary review. Abductive analysis involved both deductive and inductive iterative theming of the data both within and across cases. The conceptual framework for socially accountable medical education was built from analyzing the internal and external factors influencing the selected medical schools. These factors became the building blocks that might be necessary to assist movement to social accountability. The strongest factor was the demands of the local workforce situation leading to innovative educational programs established with or without government support. The values and professional experiences of leaders, staff and health sector representatives, influenced whether the organizational culture of a school was conducive to social accountability. The wider institutional environment and policies of their universities affected this culture and the resourcing of programs. Membership of a coalition of socially accountable medical schools created a community of learning and legitimized local practice. Communities may not have recognized their own importance but they were fundamental for socially accountable practices. The bedrock of social accountability, that is, the foundation for all building blocks, is shared values and aspirations congruent with social accountability. These values and aspirations are both a philosophical understanding for innovation and a practical application at the health systems and

  4. 31 CFR 575.503 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 575.503 Section 575.503 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. (a) Any payment of funds or... States, to a blocked account in a U.S. financial institution located in the United States in the name of...

  5. 31 CFR 588.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 588.504 Section 588.504 Money and Finance: Treasury Regulations... § 588.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of... institution, must be blocked in an account on the books of that financial institution. A transfer of funds or...

  6. 31 CFR 547.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 547.504 Section 547.504 Money and Finance: Treasury Regulations... Policy § 547.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment... institution must be blocked in an account on the books of that financial institution. A transfer of funds or...

  7. 31 CFR 538.503 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 538.503 Section 538.503 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of funds or transfer... control of a U.S. financial institution, must be blocked in an account on the books of that financial...

  8. Stumbling Blocks in the Implementation of Accounting Education Reform: Evidence from Hong Kong

    ERIC Educational Resources Information Center

    Chen, Theodore T. Y.

    2016-01-01

    In determining whether stumbling blocks exist in the implementation of accounting education reform in Hong Kong, a survey questionnaire was sent to all accounting departments at public universities representing accounting academics, and the Hong Kong Institute of Certified Public Accountants representing the profession. The survey showed that both…

  9. 31 CFR 593.203 - Holding of blocked funds in interest-bearing accounts; investment and reinvestment.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... blocked funds in interest-bearing accounts; investment and reinvestment. (a) Except as provided in... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Holding of blocked funds in interest-bearing accounts; investment and reinvestment. 593.203 Section 593.203 Money and Finance: Treasury...

  10. Determining the Mechanical Properties of Lattice Block Structures

    NASA Technical Reports Server (NTRS)

    Wilmoth, Nathan

    2013-01-01

    Lattice block structures and shape memory alloys possess several traits ideal for solving intriguing new engineering problems in industries such as aerospace, military, and transportation. Recent testing at the NASA Glenn Research Center has investigated the material properties of lattice block structures cast from a conventional aerospace titanium alloy as well as lattice block structures cast from nickel-titanium shape memory alloy. The lattice block structures for both materials were sectioned into smaller subelements for tension and compression testing. The results from the cast conventional titanium material showed that the expected mechanical properties were maintained. The shape memory alloy material was found to be extremely brittle from the casting process and only compression testing was completed. Future shape memory alloy lattice block structures will utilize an adjusted material composition that will provide a better quality casting. The testing effort resulted in baseline mechanical property data from the conventional titanium material for comparison to shape memory alloy materials once suitable castings are available.

  11. 31 CFR 598.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 598.504 Section 598.504 Money and Finance: Treasury Regulations... Policy § 598.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment... that comes within the possession or control of a U.S. financial institution must be blocked in an...

  12. 31 CFR 540.503 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 540.503 Section 540.503 Money and Finance: Treasury Regulations... possession or control of a U.S. financial institution must be blocked in an account on the books of that financial institution. A transfer of funds or credit by a U.S. financial institution between blocked...

  13. Neuromuscular blocking properties of some bistropinium esters

    PubMed Central

    Haining, C. G.; Johnston, R. G.

    1962-01-01

    The neuromuscular blocking, anti-acetylcholine and ganglion blocking properties of two series of bistropinium esters were examined. The neuromuscular blocking activities of the mandelic acid esters of NN'-polymethylenebis(tropinium halides) were found to depend upon the number of carbon atoms (n) in the linking chain. Potency was enhanced more than 50 times as n was increased from 2 to 7. Compounds in which n equalled 7, 8, 9, 10 and 12 differed little in activity, but were generally more potent than tubocurarine in cats and rabbits. A peak of ganglion blocking action was obtained at the pentamethylene member. Esterification enhanced the feeble neuromuscular blocking properties of NN'-decamethylenebis(tropinium halide), the mandelic acid ester being more effective than the tropic, benzoic or phenylacetic acid esters in cats and rabbits. When two benzoic or mandelic acid esters of tropine were linked through their nitrogen atoms by a phenylenedimethyl grouping (-CH2.C6H4.CH2-), meta substitution was more effective than was ortho or para in producing neuromuscular block. The effectiveness of esterifying acids in m-phenylenedimethyl derivatives decreased in the following order, phenylacetic> tropic or mandelic>benzoic>acetic and diphenylacetic. PMID:13903721

  14. 31 CFR 598.203 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Prohibited transactions involving blocked property. 598.203 Section 598.203 Money and Finance: Treasury Regulations Relating to Money and... SANCTIONS REGULATIONS Prohibitions § 598.203 Prohibited transactions involving blocked property. (a) Except...

  15. 31 CFR 598.203 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Prohibited transactions involving blocked property. 598.203 Section 598.203 Money and Finance: Treasury Regulations Relating to Money and... SANCTIONS REGULATIONS Prohibitions § 598.203 Prohibited transactions involving blocked property. (a) Except...

  16. 31 CFR 598.203 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Prohibited transactions involving blocked property. 598.203 Section 598.203 Money and Finance: Treasury Regulations Relating to Money and... SANCTIONS REGULATIONS Prohibitions § 598.203 Prohibited transactions involving blocked property. (a) Except...

  17. 31 CFR 598.203 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Prohibited transactions involving blocked property. 598.203 Section 598.203 Money and Finance: Treasury Regulations Relating to Money and... SANCTIONS REGULATIONS Prohibitions § 598.203 Prohibited transactions involving blocked property. (a) Except...

  18. 31 CFR 598.203 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Prohibited transactions involving blocked property. 598.203 Section 598.203 Money and Finance: Treasury Regulations Relating to Money and... SANCTIONS REGULATIONS Prohibitions § 598.203 Prohibited transactions involving blocked property. (a) Except...

  19. 31 CFR 515.508 - Payments to blocked accounts in domestic banks.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Payments to blocked accounts in domestic banks. 515.508 Section 515.508 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY CUBAN ASSETS CONTROL...

  20. 31 CFR 500.508 - Payments to blocked accounts in domestic banks.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Payments to blocked accounts in domestic banks. 500.508 Section 500.508 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY FOREIGN ASSETS CONTROL...

  1. 31 CFR 543.407 - Payments from blocked accounts to satisfy obligations prohibited.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY CôTE D... obligations prohibited. Pursuant to § 543.201, no debits may be made to a blocked account to pay obligations...

  2. 31 CFR 543.407 - Payments from blocked accounts to satisfy obligations prohibited.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY CôTE D... obligations prohibited. Pursuant to § 543.201, no debits may be made to a blocked account to pay obligations...

  3. 3 CFR 13553 - Executive Order 13553 of September 28, 2010. Blocking Property of Certain Persons With Respect to...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    .... Blocking Property of Certain Persons With Respect to Serious Human Rights Abuses by the Government of Iran... Human Rights Abuses by the Government of Iran and Taking Certain Other Actions By the authority vested....C. 1601et seq.), the Comprehensive Iran Sanctions, Accountability, and Divestment Act of 2010...

  4. 31 CFR 594.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... GLOBAL TERRORISM SANCTIONS REGULATIONS Licenses, Authorizations and Statements of Licensing Policy § 594..., provided that no transfer is made from an account within the United States to an account held outside the United States, and further provided that a transfer from a blocked account may only be made to another...

  5. 31 CFR 560.423 - Offshore transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Government of Iran, an Iranian financial institution, or any other person whose property and interests in property are blocked pursuant to § 560.211, or property in which the Government of Iran, an Iranian...

  6. 31 CFR 560.423 - Offshore transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Government of Iran, an Iranian financial institution, or any other person whose property and interests in property are blocked pursuant to § 560.211, or property in which the Government of Iran, an Iranian...

  7. 31 CFR 510.406 - Entities owned by a person whose property and interests in property are blocked.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... property and interests in property are blocked. 510.406 Section 510.406 Money and Finance: Treasury... TREASURY NORTH KOREA SANCTIONS REGULATIONS Interpretations § 510.406 Entities owned by a person whose... blocked pursuant to § 510.201(b) has an interest in all property and interests in property of an entity in...

  8. 31 CFR 510.406 - Entities owned by a person whose property and interests in property are blocked.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... property and interests in property are blocked. 510.406 Section 510.406 Money and Finance: Treasury... TREASURY NORTH KOREA SANCTIONS REGULATIONS Interpretations § 510.406 Entities owned by a person whose... blocked pursuant to § 510.201(b) has an interest in all property and interests in property of an entity in...

  9. 31 CFR 510.406 - Entities owned by a person whose property and interests in property are blocked.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... property and interests in property are blocked. 510.406 Section 510.406 Money and Finance: Treasury... TREASURY NORTH KOREA SANCTIONS REGULATIONS Interpretations § 510.406 Entities owned by a person whose... blocked pursuant to § 510.201(b) has an interest in all property and interests in property of an entity in...

  10. 31 CFR 510.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... interest in blocked property. 510.403 Section 510.403 Money and Finance: Treasury Regulations Relating to... SANCTIONS REGULATIONS Interpretations § 510.403 Termination and acquisition of an interest in blocked... deemed to be property blocked pursuant to § 510.201, unless there exists in the property another interest...

  11. 31 CFR 510.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... interest in blocked property. 510.403 Section 510.403 Money and Finance: Treasury Regulations Relating to... SANCTIONS REGULATIONS Interpretations § 510.403 Termination and acquisition of an interest in blocked... deemed to be property blocked pursuant to § 510.201, unless there exists in the property another interest...

  12. 31 CFR 510.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... interest in blocked property. 510.403 Section 510.403 Money and Finance: Treasury Regulations Relating to... SANCTIONS REGULATIONS Interpretations § 510.403 Termination and acquisition of an interest in blocked... deemed to be property blocked pursuant to § 510.201, unless there exists in the property another interest...

  13. 31 CFR 535.508 - Payments to blocked accounts in domestic banks.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Iran or any Iranian entity is hereby authorized: Provided, Such payment or transfer shall not be made... the interest of Iran or an Iranian entity to any other country or person. (b) This section does not authorize: (1) Any payment or transfer to any blocked account held in a name other than that of Iran or the...

  14. 31 CFR 535.508 - Payments to blocked accounts in domestic banks.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Iran or any Iranian entity is hereby authorized: Provided, Such payment or transfer shall not be made... the interest of Iran or an Iranian entity to any other country or person. (b) This section does not authorize: (1) Any payment or transfer to any blocked account held in a name other than that of Iran or the...

  15. 31 CFR 594.408 - Payments from blocked accounts to satisfy obligations prohibited.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Payments from blocked accounts to satisfy obligations prohibited. 594.408 Section 594.408 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL...

  16. 31 CFR 594.408 - Payments from blocked accounts to satisfy obligations prohibited.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Payments from blocked accounts to satisfy obligations prohibited. 594.408 Section 594.408 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL...

  17. 31 CFR 546.407 - Payments from blocked accounts to satisfy obligations prohibited.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Payments from blocked accounts to satisfy obligations prohibited. 546.407 Section 546.407 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DARFUR...

  18. 31 CFR 537.407 - Payments from blocked accounts to satisfy obligations prohibited.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Payments from blocked accounts to satisfy obligations prohibited. 537.407 Section 537.407 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY BURMESE...

  19. 31 CFR 548.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 548.504 Section 548.504 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of funds or transfer....201(a) has any interest that comes within the possession or control of a U.S. financial institution...

  20. 31 CFR 551.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 551.504 Section 551.504 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of funds or transfer....201 has any interest that comes within the possession or control of a U.S. financial institution must...

  1. 31 CFR 546.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 546.504 Section 546.504 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of funds or transfer....201(a) has any interest that comes within the possession or control of a U.S. financial institution...

  2. 31 CFR 541.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 541.504 Section 541.504 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of funds or transfer...(a) has any interest, that comes within the possession or control of a U.S. financial institution...

  3. 31 CFR 537.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 537.504 Section 537.504 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of funds or transfer...(a) has any interest, that comes within the possession or control of a U.S. financial institution...

  4. 31 CFR 543.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 543.504 Section 543.504 Money and Finance: Treasury Regulations....504 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of funds or....201(a) has any interest that comes within the possession or control of a U.S. financial institution...

  5. 31 CFR 542.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 542.504 Section 542.504 Money and Finance: Treasury Regulations... Payments and transfers to blocked accounts in U.S. financial institutions. Any payment of funds or transfer...(a) has any interest, that comes within the possession or control of a U.S. financial institution...

  6. 31 CFR 598.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... accounts in U.S. financial institutions. 598.504 Section 598.504 Money and Finance: Treasury Regulations... Policy § 598.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment... same name. Note to § 598.504: Please refer to part 501, subpart C of this chapter for mandatory...

  7. 31 CFR 598.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... accounts in U.S. financial institutions. 598.504 Section 598.504 Money and Finance: Treasury Regulations... Policy § 598.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment... same name. Note to § 598.504: Please refer to part 501, subpart C of this chapter for mandatory...

  8. 31 CFR 598.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... accounts in U.S. financial institutions. 598.504 Section 598.504 Money and Finance: Treasury Regulations... Policy § 598.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment... same name. Note to § 598.504: Please refer to part 501, subpart C of this chapter for mandatory...

  9. 31 CFR 598.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... accounts in U.S. financial institutions. 598.504 Section 598.504 Money and Finance: Treasury Regulations... Policy § 598.504 Payments and transfers to blocked accounts in U.S. financial institutions. Any payment... same name. Note to § 598.504: Please refer to part 501, subpart C of this chapter for mandatory...

  10. 31 CFR 587.504 - Payments and transfers to blocked accounts in U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accounts in U.S. financial institutions. 587.504 Section 587.504 Money and Finance: Treasury Regulations.... financial institutions. Any payment of funds or transfer of credit in which a person designated in or... institution, must be blocked in an account on the books of that financial institution. A transfer of funds or...

  11. 31 CFR 598.410 - Payments from blocked accounts to U.S. exporters and for other obligations prohibited.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Payments from blocked accounts to U.S. exporters and for other obligations prohibited. 598.410 Section 598.410 Money and Finance: Treasury... TREASURY FOREIGN NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.410 Payments from blocked...

  12. 31 CFR 598.410 - Payments from blocked accounts to U.S. exporters and for other obligations prohibited.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Payments from blocked accounts to U.S. exporters and for other obligations prohibited. 598.410 Section 598.410 Money and Finance: Treasury... TREASURY FOREIGN NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.410 Payments from blocked...

  13. 31 CFR 598.410 - Payments from blocked accounts to U.S. exporters and for other obligations prohibited.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Payments from blocked accounts to U.S. exporters and for other obligations prohibited. 598.410 Section 598.410 Money and Finance: Treasury... TREASURY FOREIGN NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.410 Payments from blocked...

  14. 31 CFR 598.410 - Payments from blocked accounts to U.S. exporters and for other obligations prohibited.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Payments from blocked accounts to U.S. exporters and for other obligations prohibited. 598.410 Section 598.410 Money and Finance: Treasury... TREASURY FOREIGN NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.410 Payments from blocked...

  15. 31 CFR 598.410 - Payments from blocked accounts to U.S. exporters and for other obligations prohibited.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Payments from blocked accounts to U.S. exporters and for other obligations prohibited. 598.410 Section 598.410 Money and Finance: Treasury... TREASURY FOREIGN NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.410 Payments from blocked...

  16. 31 CFR 515.528 - Certain transactions with respect to blocked foreign intellectual property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Certain transactions with respect to blocked foreign intellectual property. 515.528 Section 515.528 Money and Finance: Treasury Regulations... Certain transactions with respect to blocked foreign intellectual property. (a) The following transactions...

  17. 31 CFR 515.528 - Certain transactions with respect to blocked foreign intellectual property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Certain transactions with respect to blocked foreign intellectual property. 515.528 Section 515.528 Money and Finance: Treasury Regulations... Certain transactions with respect to blocked foreign intellectual property. (a) The following transactions...

  18. 48 CFR 1852.245-71 - Installation-accountable Government property.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Government property. 1852.245-71 Section 1852.245-71 Federal Acquisition Regulations System NATIONAL... Provisions and Clauses 1852.245-71 Installation-accountable Government property. As prescribed in 1845.107-70(b)(1), insert the following clause: Installation-Accountable Government Property (JAN 2011) (a) The...

  19. 48 CFR 1852.245-71 - Installation-accountable Government property.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Government property. 1852.245-71 Section 1852.245-71 Federal Acquisition Regulations System NATIONAL... Provisions and Clauses 1852.245-71 Installation-accountable Government property. As prescribed in 1845.107-70(b)(1), insert the following clause: Installation-Accountable Government Property (JAN 2011) (a) The...

  20. 31 CFR 576.510 - Unblocking certain blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Unblocking certain blocked property. 576.510 Section 576.510 Money and Finance: Treasury Regulations Relating to Money and Finance... SANCTIONS REGULATIONS Licenses, Authorizations, and Statements of Licensing Policy § 576.510 Unblocking...

  1. 31 CFR 576.510 - Unblocking certain blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Unblocking certain blocked property. 576.510 Section 576.510 Money and Finance: Treasury Regulations Relating to Money and Finance... SANCTIONS REGULATIONS Licenses, Authorizations, and Statements of Licensing Policy § 576.510 Unblocking...

  2. 31 CFR 576.510 - Unblocking certain blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Unblocking certain blocked property. 576.510 Section 576.510 Money and Finance: Treasury Regulations Relating to Money and Finance... SANCTIONS REGULATIONS Licenses, Authorizations, and Statements of Licensing Policy § 576.510 Unblocking...

  3. Properties of concrete blocks prepared with low grade recycled aggregates.

    PubMed

    Poon, Chi-Sun; Kou, Shi-cong; Wan, Hui-wen; Etxeberria, Miren

    2009-08-01

    Low grade recycled aggregates obtained from a construction waste sorting facility were tested to assess the feasibility of using these in the production of concrete blocks. The characteristics of the sorted construction waste are significantly different from that of crushed concrete rubbles that are mostly derived from demolition waste streams. This is due to the presence of higher percentages of non-concrete components (e.g. >10% soil, brick, tiles etc.) in the sorted construction waste. In the study reported in this paper, three series of concrete block mixtures were prepared by using the low grade recycled aggregates to replace (i) natural coarse granite (10mm), and (ii) 0, 25, 50, 75 and 100% replacement levels of crushed stone fine (crushed natural granite <5mm) in the concrete blocks. Test results on properties such as density, compressive strength, transverse strength and drying shrinkage as well as strength reduction after exposure to 800 degrees C are presented below. The results show that the soil content in the recycled fine aggregate was an important factor in affecting the properties of the blocks produced and the mechanical strength deceased with increasing low grade recycled fine aggregate content. But the higher soil content in the recycled aggregates reduced the reduction of compressive strength of the blocks after exposure to high temperature due probably to the formation of a new crystalline phase. The results show that the low grade recycled aggregates obtained from the construction waste sorting facility has potential to be used as aggregates for making non-structural pre-cast concrete blocks.

  4. Hydration effects on the electronic properties of eumelanin building blocks

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Assis Oliveira, Leonardo Bruno; Departamento de Física - CEPAE, Universidade Federal de Goiás, 74690-900 Goiânia, GO; Escola de Ciências Exatas e da Computação, Pontifícia Universidade Católica de Goiás, 74605-010 Goiânia, GO

    2016-08-28

    Theoretical results for the electronic properties of eumelanin building blocks in the gas phase and water are presented. The building blocks presently investigated include the monomeric species DHI (5,6-dihydroxyindole) or hydroquinone (HQ), DHICA (5,6-dihydroxyindole-2-carboxylic acid), indolequinone (IQ), quinone methide (MQ), two covalently bonded dimers [HM ≡ HQ + MQ and IM ≡ IQ + MQ], and two tetramers [HMIM ≡ HQ + IM, IMIM ≡ IM + IM]. The electronic properties in water were determined by carrying out sequential Monte Carlo/time dependent density functional theory calculations. The results illustrate the role played by hydrogen bonding and electrostatic interactions in themore » electronic properties of eumelanin building blocks in a polar environment. In water, the dipole moments of monomeric species are significantly increased ([54–79]%) relative to their gas phase values. Recently, it has been proposed that the observed enhancement of the higher-energy absorption intensity in eumelanin can be explained by excitonic coupling among eumelanin protomolecules [C.-T. Chen et al., Nat. Commun. 5, 3859 (2014)]. Here, we are providing evidence that for DHICA, IQ, and HMIM, the electronic absorption toward the higher-energy end of the spectrum ([180–220] nm) is enhanced by long-range Coulombic interactions with the water environment. It was verified that by superposing the absorption spectra of different eumelanin building blocks corresponding to the monomers, dimers, and tetramers in liquid water, the behaviour of the experimental spectrum, which is characterised by a nearly monotonic decay from the ultraviolet to the infrared, is qualitatively reproduced. This result is in keeping with a “chemical disorder model,” where the broadband absorption of eumelanin pigments is determined by the superposition of the spectra associated with the monomeric and oligomeric building blocks.« less

  5. Hydration effects on the electronic properties of eumelanin building blocks.

    PubMed

    Assis Oliveira, Leonardo Bruno; L Fonseca, Tertius; Costa Cabral, Benedito J; Coutinho, Kaline; Canuto, Sylvio

    2016-08-28

    Theoretical results for the electronic properties of eumelanin building blocks in the gas phase and water are presented. The building blocks presently investigated include the monomeric species DHI (5,6-dihydroxyindole) or hydroquinone (HQ), DHICA (5,6-dihydroxyindole-2-carboxylic acid), indolequinone (IQ), quinone methide (MQ), two covalently bonded dimers [HM ≡ HQ + MQ and IM ≡ IQ + MQ], and two tetramers [HMIM ≡ HQ + IM, IMIM ≡ IM + IM]. The electronic properties in water were determined by carrying out sequential Monte Carlo/time dependent density functional theory calculations. The results illustrate the role played by hydrogen bonding and electrostatic interactions in the electronic properties of eumelanin building blocks in a polar environment. In water, the dipole moments of monomeric species are significantly increased ([54-79]%) relative to their gas phase values. Recently, it has been proposed that the observed enhancement of the higher-energy absorption intensity in eumelanin can be explained by excitonic coupling among eumelanin protomolecules [C.-T. Chen et al., Nat. Commun. 5, 3859 (2014)]. Here, we are providing evidence that for DHICA, IQ, and HMIM, the electronic absorption toward the higher-energy end of the spectrum ([180-220] nm) is enhanced by long-range Coulombic interactions with the water environment. It was verified that by superposing the absorption spectra of different eumelanin building blocks corresponding to the monomers, dimers, and tetramers in liquid water, the behaviour of the experimental spectrum, which is characterised by a nearly monotonic decay from the ultraviolet to the infrared, is qualitatively reproduced. This result is in keeping with a "chemical disorder model," where the broadband absorption of eumelanin pigments is determined by the superposition of the spectra associated with the monomeric and oligomeric building blocks.

  6. Hydration effects on the electronic properties of eumelanin building blocks

    NASA Astrophysics Data System (ADS)

    Assis Oliveira, Leonardo Bruno; L. Fonseca, Tertius; Costa Cabral, Benedito J.; Coutinho, Kaline; Canuto, Sylvio

    2016-08-01

    Theoretical results for the electronic properties of eumelanin building blocks in the gas phase and water are presented. The building blocks presently investigated include the monomeric species DHI (5,6-dihydroxyindole) or hydroquinone (HQ), DHICA (5,6-dihydroxyindole-2-carboxylic acid), indolequinone (IQ), quinone methide (MQ), two covalently bonded dimers [HM ≡ HQ + MQ and IM ≡ IQ + MQ], and two tetramers [HMIM ≡ HQ + IM, IMIM ≡ IM + IM]. The electronic properties in water were determined by carrying out sequential Monte Carlo/time dependent density functional theory calculations. The results illustrate the role played by hydrogen bonding and electrostatic interactions in the electronic properties of eumelanin building blocks in a polar environment. In water, the dipole moments of monomeric species are significantly increased ([54-79]%) relative to their gas phase values. Recently, it has been proposed that the observed enhancement of the higher-energy absorption intensity in eumelanin can be explained by excitonic coupling among eumelanin protomolecules [C.-T. Chen et al., Nat. Commun. 5, 3859 (2014)]. Here, we are providing evidence that for DHICA, IQ, and HMIM, the electronic absorption toward the higher-energy end of the spectrum ([180-220] nm) is enhanced by long-range Coulombic interactions with the water environment. It was verified that by superposing the absorption spectra of different eumelanin building blocks corresponding to the monomers, dimers, and tetramers in liquid water, the behaviour of the experimental spectrum, which is characterised by a nearly monotonic decay from the ultraviolet to the infrared, is qualitatively reproduced. This result is in keeping with a "chemical disorder model," where the broadband absorption of eumelanin pigments is determined by the superposition of the spectra associated with the monomeric and oligomeric building blocks.

  7. 48 CFR 2045.371 - Property accountability procedures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Property accountability procedures. 2045.371 Section 2045.371 Federal Acquisition Regulations System NUCLEAR REGULATORY COMMISSION... accountability procedures. (a) The threshold for detailed reporting of capitalized equipment by contractors is...

  8. Nanostructured Block Copolymer Solutions and Composites: Mechanical and Structural Properties

    NASA Astrophysics Data System (ADS)

    Walker, Lynn

    2015-03-01

    Self-assembled block copolymer templates are used to control the nanoscale structure of materials that would not otherwise order in solution. In this work, we have developed a technique to use close-packed cubic and cylindrical mesophases of a thermoreversible block copolymer (PEO-PPO-PEO) to impart spatial order on dispersed nanoparticles. The thermoreversible nature of the template allows for the dispersion of particles synthesized outside the template. This feature extends the applicability of this templating method to many particle-polymer systems, including proteins, and also permits a systematic evaluation of the impact of design parameters on the structure and mechanical properties of the nanocomposites. The criteria for forming co-crystals have been characterized using small-angle scatting and the mechanical properties of these soft crystals determined. Numerous crystal structures have been reported for the block copolymer system and we have taken advantage of several to generate soft co-crystals. The result of this templating is spatially ordered nanoparticle arrays embedded within the block copolymer nanostructure. These soft materials can be shear aligned into crystals with long range order and this shear alignment is discussed. Finally, the dynamics of nanoparticles within the nanostructured material are characterized with fluorescence recovery after photobleaching (FRAP). The applications and general behavior of these nanostructured hydrogels are outlined.

  9. 31 CFR 595.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Prohibited transactions involving blocked property. 595.201 Section 595.201 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TERRORISM SANCTIONS...

  10. 31 CFR 594.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Prohibited transactions involving blocked property. 594.201 Section 594.201 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL TERRORISM...

  11. 31 CFR 538.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Prohibited transactions involving blocked property. 538.201 Section 538.201 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY SUDANESE SANCTIONS...

  12. 31 CFR 545.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Prohibited transactions involving blocked property. 545.201 Section 545.201 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TALIBAN (AFGHANISTAN...

  13. 49 CFR 1242.16 - Road property damaged-other (account XX-19-48).

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Road property damaged-other (account XX-19-48... Structures § 1242.16 Road property damaged—other (account XX-19-48). Separate common expenses in proportion... accounts: Road Property Damaged—Running (XX-17-48) Road Property Damaged—Switching (XX-18-48) ...

  14. 31 CFR 593.203 - Holding of blocked funds in interest-bearing accounts; investment and reinvestment.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... (15 U.S.C. 78a et seq.), provided the funds are invested in a money market fund or in U.S. Treasury... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Holding of blocked funds in interest-bearing accounts; investment and reinvestment. 593.203 Section 593.203 Money and Finance: Treasury...

  15. Guidelines for School Property Accounting in Colorado, Part II--General Fixed Asset Accounts.

    ERIC Educational Resources Information Center

    Stiverson, Clare L.

    The second publication of a series of three issued by the Colorado Department of Education is designed as a guide for local school districts in the development of a property accounting system. It defines and classifies groups of accounts whereby financial information, taken from inventory records, may be transcribed into debit and credit entries…

  16. 77 FR 10808 - Designation of One Entity Pursuant to Executive Order 13572 of April 29, 2011, “Blocking Property...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-23

    ... Executive Order 13572 of April 29, 2011, ``Blocking Property of Certain Persons With Respect to Human Rights..., 2011, ``Blocking Property of Certain Persons with Respect to Human Rights Abuses in Syria.'' DATES: The..., ``Blocking Property of Certain Persons with Respect to Human Rights Abuses in Syria,'' (the ``Order...

  17. 76 FR 54534 - Designation of One Entity Pursuant to Executive Order 13572 of April 29, 2011, “Blocking Property...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-01

    ... Executive Order 13572 of April 29, 2011, ``Blocking Property of Certain Persons with Respect to Human Rights... April 29, 2011, ``Blocking Property of Certain Persons with Respect to Human Rights Abuses in Syria..., ``Blocking Property of Certain Persons with Respect to Human Rights Abuses in Syria,'' (the ``Order...

  18. Molecular Clusters: Nanoscale Building Blocks for Solid-State Materials.

    PubMed

    Pinkard, Andrew; Champsaur, Anouck M; Roy, Xavier

    2018-04-17

    The programmed assembly of nanoscale building blocks into multicomponent hierarchical structures is a powerful strategy for the bottom-up construction of functional materials. To develop this concept, our team has explored the use of molecular clusters as superatomic building blocks to fabricate new classes of materials. The library of molecular clusters is rich with exciting properties, including diverse functionalization, redox activity, and magnetic ordering, so the resulting cluster-assembled solids, which we term superatomic crystals (SACs), hold the promise of high tunability, atomic precision, and robust architectures among a diverse range of other material properties. Molecular clusters have only seldom been used as precursors for functional materials. Our team has been at the forefront of new developments in this exciting research area, and this Account focuses on our progress toward designing materials from cluster-based precursors. In particular, this Account discusses (1) the design and synthesis of molecular cluster superatomic building blocks, (2) their self-assembly into SACs, and (3) their resulting collective properties. The set of molecular clusters discussed herein is diverse, with different cluster cores and ligand arrangements to create an impressive array of solids. The cluster cores include octahedral M 6 E 8 and cubane M 4 E 4 (M = metal; E = chalcogen), which are typically passivated by a shell of supporting ligands, a feature upon which we have expanded upon by designing and synthesizing more exotic ligands that can be used to direct solid-state assembly. Building from this library, we have designed whole families of binary SACs where the building blocks are held together through electrostatic, covalent, or van der Waals interactions. Using single-crystal X-ray diffraction (SCXRD) to determine the atomic structure, a remarkable range of compositional variability is accessible. We can also use this technique, in tandem with vibrational

  19. 31 CFR 598.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... interest in blocked property. 598.403 Section 598.403 Money and Finance: Treasury Regulations Relating to... NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.403 Termination and acquisition of an interest... blocked pursuant to § 598.202. (b) Unless otherwise specifically provided in a license issued pursuant to...

  20. 31 CFR 598.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... interest in blocked property. 598.403 Section 598.403 Money and Finance: Treasury Regulations Relating to... NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.403 Termination and acquisition of an interest... blocked pursuant to § 598.202. (b) Unless otherwise specifically provided in a license issued pursuant to...

  1. 31 CFR 598.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... interest in blocked property. 598.403 Section 598.403 Money and Finance: Treasury Regulations Relating to... NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.403 Termination and acquisition of an interest... blocked pursuant to § 598.202. (b) Unless otherwise specifically provided in a license issued pursuant to...

  2. 31 CFR 598.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... interest in blocked property. 598.403 Section 598.403 Money and Finance: Treasury Regulations Relating to... NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.403 Termination and acquisition of an interest... blocked pursuant to § 598.202. (b) Unless otherwise specifically provided in a license issued pursuant to...

  3. 31 CFR 598.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... interest in blocked property. 598.403 Section 598.403 Money and Finance: Treasury Regulations Relating to... NARCOTICS KINGPIN SANCTIONS REGULATIONS Interpretations § 598.403 Termination and acquisition of an interest... blocked pursuant to § 598.202. (b) Unless otherwise specifically provided in a license issued pursuant to...

  4. How Properties of Kenaf Fibers from Burkina Faso Contribute to the Reinforcement of Earth Blocks

    PubMed Central

    Millogo, Younoussa; Aubert, Jean-Emmanuel; Hamard, Erwan; Morel, Jean-Claude

    2015-01-01

    Physicochemical characteristics of Hibiscus cannabinus (kenaf) fibers from Burkina Faso were studied using X-ray diffraction (XRD), infrared spectroscopy, thermal gravimetric analysis (TGA), chemical analysis and video microscopy. Kenaf fibers (3 cm long) were used to reinforce earth blocks, and the mechanical properties of reinforced blocks, with fiber contents ranging from 0.2 to 0.8 wt%, were investigated. The fibers were mainly composed of cellulose type I (70.4 wt%), hemicelluloses (18.9 wt%) and lignin (3 wt%) and were characterized by high tensile strength (1 ± 0.25 GPa) and Young’s modulus (136 ± 25 GPa), linked to their high cellulose content. The incorporation of short fibers of kenaf reduced the propagation of cracks in the blocks, through the good adherence of fibers to the clay matrix, and therefore improved their mechanical properties. Fiber incorporation was particularly beneficial for the bending strength of earth blocks because it reinforces these blocks after the failure of soil matrix observed for unreinforced blocks. Blocks reinforced with such fibers had a ductile tensile behavior that made them better building materials for masonry structures than unreinforced blocks.

  5. 31 CFR 537.201 - Prohibited transactions involving certain blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Prohibited transactions involving certain blocked property. 537.201 Section 537.201 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY BURMESE...

  6. 31 CFR 570.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... transfer of property (including any property interest) away from the Government of Libya or a person, such... transferred or attempted to be transferred to the Government of Libya or any other person whose property and... which the Government of Libya or that person has an interest and therefore blocked. ...

  7. 31 CFR 570.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... transfer of property (including any property interest) away from the Government of Libya or a person, such... transferred or attempted to be transferred to the Government of Libya or any other person whose property and... which the Government of Libya or that person has an interest and therefore blocked. ...

  8. 31 CFR 570.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... transfer of property (including any property interest) away from the Government of Libya or a person, such... transferred or attempted to be transferred to the Government of Libya or any other person whose property and... which the Government of Libya or that person has an interest and therefore blocked. ...

  9. 31 CFR 570.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... transfer of property (including any property interest) away from the Government of Libya or a person, such... transferred or attempted to be transferred to the Government of Libya or any other person whose property and... which the Government of Libya or that person has an interest and therefore blocked. ...

  10. 18 CFR 367.9240 - Account 924, Property insurance.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Account 924, Property insurance. 367.9240 Section 367.9240 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... against losses and damages to owned or leased property used in service company operations. It also must...

  11. 76 FR 11315 - Blocking Property and Prohibiting Certain Transactions Related to Libya

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-02

    ... Secretary of State: (i) to be a senior official of the Government of Libya; (ii) to be a child of Colonel... otherwise directing, or to have participated in, the commission of human rights abuses related to political...) to be a spouse or dependent child of any person whose property and interests in property are blocked...

  12. Photoconductivity enhancement and charge transport properties in ruthenium-containing block copolymer/carbon nanotube hybrids.

    PubMed

    Lo, Kin Cheung; Hau, King In; Chan, Wai Kin

    2018-04-05

    Functional polymer/carbon nanotube (CNT) hybrid materials can serve as a good model for light harvesting systems based on CNTs. This paper presents the synthesis of block copolymer/CNT hybrids and the characterization of their photocurrent responses by both experimental and computational approaches. A series of functional diblock copolymers was synthesized by reversible addition-fragmentation chain transfer polymerizations for the dispersion and functionalization of CNTs. The block copolymers contain photosensitizing ruthenium complexes and modified pyrene-based anchoring units. The photocurrent responses of the polymer/CNT hybrids were measured by photoconductive atomic force microscopy (PCAFM), from which the experimental data were analyzed by vigorous statistical models. The difference in photocurrent response among different hybrids was correlated to the conformations of the hybrids, which were elucidated by molecular dynamics simulations, and the electronic properties of polymers. The photoresponse of the block copolymer/CNT hybrids can be enhanced by introducing an electron-accepting block between the photosensitizing block and the CNT. We have demonstrated that the application of a rigorous statistical methodology can unravel the charge transport properties of these hybrid materials and provide general guidelines for the design of molecular light harvesting systems.

  13. Reinforcement of subarachnoid block by epidural volume effect in lower abdominal surgery: A comparison between fentanyl and tramadol for efficacy and block properties

    PubMed Central

    Mohan, Atiharsh; Singh, Preet Mohinder; Malviya, Deepak; Arya, Sunil Kumar; Singh, Dinesh Kumar

    2012-01-01

    Background: Epidural volume extension (EVE) is claimed to increase the block height and decrease the dose requirement for intrathecal drug. However, almost all studies have been done in obstetric population and none actually compares the effect of additional drugs added to epidural volume. Materials and Methods: Seventy-five (ASA I and II) patients scheduled for lower abdominal surgery were randomly divided into three groups. All groups received intrathecal 10 mg bupivacaine; two groups received additional 10 ml of normal saline epidurally with 25 mg tramadol or 25 mg of fentanyl. Groups were than compared for maximal block height, rate of sensory block regression to T10, and motor block regression to Bromage scale of 0. Time to first analgesia and adverse effects were also compared among the three groups. Materials and Methods: Seventy-five (ASA I and II) patients scheduled for lower abdominal surgery were randomly divided into three groups. All groups received intrathecal 10 mg bupivacaine; two groups received additional 10 ml of normal saline epidurally with 25 mg tramadol or 25 mg of fentanyl. Groups were than compared for maximal block height, rate of sensory block regression to T10, and motor block regression to Bromage scale of 0. Time to first analgesia and adverse effects were also compared among the three groups. Results: Groups with EVE had statistically significant higher block height, with a significant faster regression that the control group. However, both fentanyl and tramadol groups were inseparable in respect to motor or sensory block regression. Fentanyl group had maximal time to first analgesia, followed by tramadol and control groups. Hemodynamic alterations were also more common in EVE groups. Conclusion: EVE can increase the block height significantly, but it seems to be limited only to the physical property of additional volume in epidural space and fentanyl or tramadol do not seem to differ in their ability to alter block properties. PMID

  14. 48 CFR 245.103-71 - Transferring Government property accountability.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Transferring Government... ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE CONTRACT MANAGEMENT GOVERNMENT PROPERTY General 245.103-71 Transferring Government property accountability. Follow the procedures at PGI 245.103-71 for...

  15. 18 CFR 367.1010 - Account 101, Service company property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Account 101, Service company property. 367.1010 Section 367.1010 Conservation of Power and Water Resources FEDERAL ENERGY..., FEDERAL POWER ACT AND NATURAL GAS ACT UNIFORM SYSTEM OF ACCOUNTS FOR CENTRALIZED SERVICE COMPANIES SUBJECT...

  16. Multiresolution Simulation Approaches for Elucidating the Morphology-Property Correlations in Block Copolymer Membranes

    DTIC Science & Technology

    properties, a number of intriguing observations have also been noted in the dependencies of transport properties upon the physicochemical parameters...addition of (non-conducting) particles would block the diffusion pathways (by a factor which depends only the loading of the fillers) and lead to reduction in the conductivity of the ions.

  17. Psychometric Properties of the Shipley Block Design Task: A Study with Jamaican Young Adults

    ERIC Educational Resources Information Center

    Beaujean, A. Alexander; Hull, Darrell M.; Sheng, Yanyan; Worrell, Frank C.; Bolen, Judy; Verdisco, Aimee E.

    2017-01-01

    We examined the structure of the new "Block Patterns" (BP) test from the Shipley Institute of Living Scale-Second Edition in a sample of Jamaican young adults. To date, very little has been published on the properties of this subtest's items and scores. The BP test is similar in design to the Block Design subtest found in many cognitive…

  18. 76 FR 2193 - Designation Pursuant to Executive Order 13396 of February 7, 2006, “Blocking Property of Certain...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-12

    ... DEPARTMENT OF THE TREASURY Office of Foreign Assets Control Designation Pursuant to Executive Order 13396 of February 7, 2006, ``Blocking Property of Certain Persons Contributing to the Conflict in... 7, 2006, ``Blocking Property of Certain Persons Contributing to the Conflict in C[ocirc]te d'Ivoire...

  19. Protein based Block Copolymers

    PubMed Central

    Rabotyagova, Olena S.; Cebe, Peggy; Kaplan, David L.

    2011-01-01

    Advances in genetic engineering have led to the synthesis of protein-based block copolymers with control of chemistry and molecular weight, resulting in unique physical and biological properties. The benefits from incorporating peptide blocks into copolymer designs arise from the fundamental properties of proteins to adopt ordered conformations and to undergo self-assembly, providing control over structure formation at various length scales when compared to conventional block copolymers. This review covers the synthesis, structure, assembly, properties, and applications of protein-based block copolymers. PMID:21235251

  20. Replication of engine block cylinder bridge microstructure and mechanical properties with lab scale 319 Al alloy billet castings

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Lombardi, A., E-mail: a2lombar@ryerson.ca; D'Elia, F.; Ravindran, C.

    2014-01-15

    In recent years, aluminum alloy gasoline engine blocks have in large part successfully replaced nodular cast iron engine blocks, resulting in improved vehicle fuel efficiency. However, because of the inadequate wear resistance properties of hypoeutectic Al–Si alloys, gray iron cylinder liners are required. These liners cause the development of large tensile residual stress along the cylinder bores and necessitate the maximization of mechanical properties in this region to prevent premature engine failure. The aim of this study was to replicate the engine cylinder bridge microstructure and mechanical properties following TSR treatment (which removes the sand binder to enable easy castingmore » retrieval) using lab scale billet castings of the same alloy composition with varying cooling rates. Comparisons in microstructure between the engine block and the billet castings were carried out using optical and scanning electron microscopy, while mechanical properties were assessed using tensile testing. The results suggest that the microstructure at the top and middle of the engine block cylinder bridge was successfully replicated by the billet castings. However, the microstructure at the bottom of the cylinder was not completely replicated due to variations in secondary phase morphology and distribution. The successful replication of engine block microstructure will enable the future optimization of heat treatment parameters. - Highlights: • A method to replicate engine block microstructure was developed. • Billet castings will allow cost effective optimization of heat treatment process. • The replication of microstructure in the cylinder region was mostly successful. • Porosity was more clustered in the billet castings compared to the engine block. • Mechanical properties were lower in billet castings due to porosity and inclusions.« less

  1. 77 FR 6657 - Blocking Property of the Government of Iran and Iranian Financial Institutions

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-08

    ... Property of the Government of Iran and Iranian Financial Institutions #0; #0; #0; Presidential Documents #0... Blocking Property of the Government of Iran and Iranian Financial Institutions By the authority vested in... the Central Bank of Iran and other Iranian banks to conceal transactions of sanctioned parties, the...

  2. Mechanical properties and internal fit of 4 CAD-CAM block materials.

    PubMed

    Goujat, Alexis; Abouelleil, Hazem; Colon, Pierre; Jeannin, Christophe; Pradelle, Nelly; Seux, Dominique; Grosgogeat, Brigitte

    2018-03-01

    Recent polymer-based computer-assisted design and computer-assisted manufacturing (CAD-CAM) materials have been commercialized for inlay restorations, a polymer-infiltrated ceramic-network (PICN) and composite resin nanoceramics. Little independent evidence regarding their mechanical properties exists. Internal adaptation is an important factor for the clinical success and longevity of a restoration, and data concerning this parameter for inlays made with these blocks are scarce. The purpose of this in vitro study was to evaluate and compare the mechanical properties (flexural strength, flexural modulus, Vickers hardness, fracture toughness) and the internal adaptation of these recent polymer-based blocks with a lithium disilicate glass-ceramic block. The materials tested in this study were a PICN material (Vita Enamic), 2 composite resin nanoceramics (Lava Ultimate; 3M ESPE and Cerasmart; GCDental Products), and a lithium disilicate glass-ceramic (IPS e.max CAD). Mechanical properties were evaluated according to ISO norm DIS 6872:2013. Bar-shaped specimens (18×3×3 mm) were prepared and submitted to a 3-point bend test using a universal testing machine at a cross-head speed of 0.5 mm/min. In addition, identical cavities were prepared in 60 human mandibular extracted molars (n=15) and optically scanned to receive mesioocclusodistal inlays milled with the 4 materials tested in a CEREC Inlab milling machine. The replica technique and a stereomicroscope (×20) were used to measure the internal fit of the inlays at 9 preselected locations. All data were statistically analyzed using 1-way ANOVA and the post hoc Tukey multiple comparison or Games-Howell test (α=.05). The mean flexural strength of the tested blocks ranged from 148.7 ±9.5 MPa (Vita Enamic) to 216.5 ±28.3 MPa (Cerasmart). The mean flexural modulus ranged from 23.3 ±6.4 GPa (Vita Enamic) to 52.8 ±10.5 GPa (IPS e.max CAD). The mean Vickers hardness ranged from 0.66 ±0.02 GPa (Cerasmart) to 5.98 ±0

  3. 47 CFR 36.352 - Other property plant and equipment expenses-Account 6510 (Class B telephone companies); Accounts...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 2 2010-10-01 2010-10-01 false Other property plant and equipment expenses... Section 36.352 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES... Plant Expenses-Other § 36.352 Other property plant and equipment expenses—Account 6510 (Class B...

  4. 47 CFR 36.352 - Other property plant and equipment expenses-Account 6510 (Class B telephone companies); Accounts...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 2 2011-10-01 2011-10-01 false Other property plant and equipment expenses... Section 36.352 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES... Plant Expenses-Other § 36.352 Other property plant and equipment expenses—Account 6510 (Class B...

  5. 18 CFR 367.4040 - Account 404, Amortization of limited-term property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... COMPANY ACT OF 2005, FEDERAL POWER ACT AND NATURAL GAS ACT UNIFORM SYSTEM OF ACCOUNTS FOR CENTRALIZED... applicable to amounts included in the service company property accounts for limited-term franchises, licenses...

  6. Study of nonuniformity of mechanical properties of rigid polyurethane foam in blocks obtained by free foaming. 1. Blocks with cylindrical form

    NASA Astrophysics Data System (ADS)

    Zhmud, N. P.; Solodovnik, P. I.; Yakushin, V. Ya.

    1983-05-01

    In PUF blocks with vertical walls and circular cross section (H/D=0.4-8) obtained by free foaming, a regular change in the mechanical properties in the bulk of the material is observed, which is not related to a change in density,

  7. Accounting Issues: An Essay Series Part IV--Property, Plant, & Equipment

    ERIC Educational Resources Information Center

    Laux, Judy

    2007-01-01

    This fourth article in a series of theoretical essays intended to supplement the introductory financial accounting course is dedicated to the topic of property, plant, and equipment (PP&E), including both the accounting treatment and its related conceptual connections. The paper also addresses the measurement dilemmas, scandalous accounting…

  8. Property Accounting for Local and State School Systems. State Educational Records and Reports Series--Handbook III.

    ERIC Educational Resources Information Center

    Reason, Paul L.; Tankard, George G., Jr.

    This handbook serves as a basic guide to property accounting for local and state school systems in the U.S. Information and guidelines are presented regarding--(1) classification of property accounts, (2) definitions of property accounts, (3) measures of school property, (4) supplies and equipment, (5) individual property records, and (6) summary…

  9. Experimental Study on Properties of Methane Diffusion of Coal Block under Triaxial Compressive Stress

    PubMed Central

    Zhao, Hong-Bao

    2014-01-01

    Taking the standard size coal block samples defined by ISRM as research objects, both properties of methane diffusion of coal block under triaxial compressive stress and characteristic influences caused by methane pressure were systematically studied with thermo-fluid-solid coupling with triaxial servocontrolled seepage equipment of methane-containing coal. The result shows the methane diffusion property of coal block under triaxial compressive stress was shown in four-stage as follow, first is sharply reduce stage, second is hyperbolic reduce stage, third is close to a fixed value stage, fourth stage is 0. There is a special point making the reduced rate of characteristic curve of methane diffusion speed become sharply small; the influences of shape of methane diffusion speed characteristic curve caused by methane pressure are not obvious, which only is shown in numerical size of methane diffusion speed. Test time was extended required by appear of the special point makes the reduce rate of methane diffusion speed become sharply small. The fitting four-phase relation of methane diffusion of coal block under triaxial compressive stress was obtained, and the idea is proposed that influences of the fitting four-phase relation caused by methane pressure were only shown in value of fitting parameters. PMID:25531000

  10. Synthesis and studies of polypeptide materials: Self-assembled block copolypeptide amphiphiles, DNA-condensing block copolypeptides and membrane-interactive random copolypeptides

    NASA Astrophysics Data System (ADS)

    Wyrsta, Michael Dmytro

    A new class of transition metal initiators for the controlled polymerization of alpha-aminoacid-N-carboxyanhydrides (alpha-NCAs), has been developed by Deming et al. This discovery has allowed for the synthesis of well-defined "protein-like" polymers. Using this chemistry we have made distinct block/random copolypeptides for biomedical applications. Drug delivery, gene delivery, and antimicrobial polymers were the focus of our research efforts. The motivation for the synthesis and study of synthetic polypeptide based materials comes from proteins. Natural proteins are able to adopt a staggeringly large amount of uniquely well-defined folded structures. These structures account for the diversity in properties of proteins. As catalysts (enzymes) natural proteins perform some of the most difficult chemistry with ease and precision at ambient pressures and temperatures. They also exhibit incredible structural properties that directly result from formation of complex hierarchical assemblies. Self-assembling block copolymers were synthesized with various compositions and architectures. In general, di- and tri-block amphiphiles were studied for their self-assembling properties. Both spherical and tubular vesicles were found to assemble from di- and tri-block amphiphiles, respectively. In addition to self-assembly, pH responsiveness was engineered into these amphiphiles by the incorporation of basic residues (lysine) into the hydrophobic block. Another form of self-assembly studied was the condensation of DNA using cationic block copolymers. It was found that cationic block copolymers could condense DNA into compact, ordered, water-soluble aggregates on the nanoscale. These aggregates sufficiently protected DNA from nucleases and yet were susceptible to proteases. These studies form the basis of a gene delivery platform. The ease with which NCAs are polymerized renders them completely amenable to parallel synthetic methods. We have employed this technique to discover new

  11. Imide/arylene ether block copolymers

    NASA Technical Reports Server (NTRS)

    Jensen, B. J.; Hergenrother, P. M.; Bass, R. G.

    1991-01-01

    Two series of imide/arylene either block copolymers were prepared using an arylene ether block and either an amorphous or semi-crystalline imide block. The resulting copolymers were characterized and selected physical and mechanical properties were determined. These results, as well as comparisons to the homopolymer properties, are discussed.

  12. Amino Acid Block Copolymers with Broad Antimicrobial Activity and Barrier Properties.

    PubMed

    Bevilacqua, Michael P; Huang, Daniel J; Wall, Brian D; Lane, Shalyn J; Edwards, Carl K; Hanson, Jarrod A; Benitez, Diego; Solomkin, Joseph S; Deming, Timothy J

    2017-10-01

    Antimicrobial properties of a long-chain, synthetic, cationic, and hydrophobic amino acid block copolymer are reported. In 5 and 60 min time-kill assays, solutions of K 100 L 40 block copolymers (poly(l-lysine·hydrochloride) 100 -b-poly(l-leucine) 40 ) at concentrations of 10-100 µg mL -1 show multi-log reductions in colony forming units of Gram-positive and Gram-negative bacteria, as well as yeast, including multidrug-resistant strains. Driven by association of hydrophobic segments, K 100 L 40 copolymers form viscous solutions and self-supporting hydrogels in water at concentrations of 1 and 2 wt%, respectively. These K 100 L 40 preparations provide an effective barrier to microbial contamination of wounds, as measured by multi-log decreases of tissue-associated bacteria with deliberate inoculation of porcine skin explants, porcine open wounds, and rodent closed wounds with foreign body. Based on these findings, amino acid copolymers with the features of K 100 L 40 can combine potent, direct antimicrobial activity and barrier properties in one biopolymer for a new approach to prevention of wound infections. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  13. Effect of Orientation on Tensile Properties of Inconel 718 Block Fabricated with Electron Beam Freeform Fabrication (EBF3)

    NASA Technical Reports Server (NTRS)

    Bird, R. Keith; Atherton, Todd S.

    2010-01-01

    Electron beam freeform fabrication (EBF3) direct metal deposition processing was used to fabricate an Inconel 718 bulk block deposit. Room temperature tensile properties were measured as a function of orientation and location within the block build. This study is a follow-on activity to previous work on Inconel 718 EBF3 deposits that were too narrow to allow properties to be measured in more than one orientation

  14. Spatial discontinuity in the distribution of soil properties: underlying landscape properties or management

    USDA-ARS?s Scientific Manuscript database

    Landscape responses to applied treatments have traditionally been accounted for in statistical analyses with blocking criteria (slope position, etc.), to compartmentalize variance and allow more accurate definition of treatment effects. However, within-unit distributions of soil properties can conta...

  15. Improvements of self-assembly properties via homopolymer addition or block-copolymer blends

    NASA Astrophysics Data System (ADS)

    Chevalier, X.; Nicolet, C.; Tiron, R.; Gharbi, Ahmed; Argoud, M.; Couderc, C.; Fleury, Guillaume; Hadziioannou, G.; Iliopoulos, I.; Navarro, C.

    2014-03-01

    The properties of cylindrical poly(styrene-b-methylmethacrylate) (PS-b-PMMA) BCPs self-assembly in thinfilms are studied when the pure BCPs are blended either with a homopolymer or with another cylindrical PS-b-PMMA based BCP. For both of these approaches, we show that the period of the self-assembled features can be easily tuned and controlled, and that the final material presents interesting characteristics, such as the possibility to achieve thicker defects-free films, as compared to pure block-copolymers having the same period. Moreover, a statistical defectivity study based on a Delaunay triangulation and Voronoi analysis of the self-assemblies made with the different blends is described, and prove that despite their high value of polydispersity index, these blends exhibit also improved selfassembly properties (bigger monocrystalline arrangements and enhanced kinetics of defects annihilation) as compared to pure and monodisperse block-copolymers. Finally, the behavior of the blends is also compared to the ones their pure counter-part in templated approach like the contact-hole shrink to evaluate their respective process-window and response toward this physical constrain for lithographic applications.

  16. (Electro)Mechanical Properties of Olefinic Block Copolymers

    NASA Astrophysics Data System (ADS)

    Spontak, Richard

    2014-03-01

    Conventional styrenic triblock copolymers (SBCs) swollen with a midblock-selective oil have been previously shown to exhibit excellent electromechanical properties as dielectric elastomers. In this class of electroactive polymers, compliant electrodes applied as active areas to opposing surfaces of an elastomer attract each other, and thus compress the elastomer due to the onset of a Maxwell stress, upon application of an external electric field. This isochoric process is accompanied by an increase in lateral area, which yields the electroactuation strain (measuring beyond 300% in SBC systems). Performance parameters such as the Maxwell stress, transverse strain, dielectric breakdown, energy density and electromechanical efficiency are determined directly from the applied electric field and resulting electroactuation strain. In this study, the same principle used to evaluate SBC systems is extended to olefinic block copolymers (OBCs), which can be described as randomly-coupled multiblock copolymers that consist of crystallizable polyethylene hard segments and rubbery poly(ethylene-co-octene) soft segments. Considerations governing the development of a methodology to fabricate electroresponsive OBC systems are first discussed for several OBCs differing in composition and bulk properties. Evidence of electroactuation in selectively-solvated OBC systems is presented and performance metrics measured therefrom are quantitatively compared with dielectric elastomers derived from SBC and related materials.

  17. 31 CFR 595.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Termination and acquisition of an interest in blocked property. 595.403 Section 595.403 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TERRORISM...

  18. 31 CFR 594.404 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Termination and acquisition of an interest in blocked property. 594.404 Section 594.404 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL...

  19. 31 CFR 594.404 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Termination and acquisition of an interest in blocked property. 594.404 Section 594.404 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL...

  20. 31 CFR 546.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Termination and acquisition of an interest in blocked property. 546.403 Section 546.403 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DARFUR...

  1. 31 CFR 537.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Termination and acquisition of an interest in blocked property. 537.403 Section 537.403 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY BURMESE...

  2. 31 CFR 510.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Termination and acquisition of an interest in blocked property. 510.403 Section 510.403 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY NORTH KOREA...

  3. 31 CFR 551.403 - Termination and acquisition of an interest in blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Termination and acquisition of an interest in blocked property. 551.403 Section 551.403 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY SOMALIA...

  4. 18 CFR 367.4114 - Account 411.4, Investment tax credit adjustments, service company property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ..., Investment tax credit adjustments, service company property. 367.4114 Section 367.4114 Conservation of Power... Operating Income § 367.4114 Account 411.4, Investment tax credit adjustments, service company property. This account must include the amount of those investment tax credit adjustments that relate to service company...

  5. 76 FR 29143 - Blocking Property of Senior Officials of the Government of Syria

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-20

    ... Order 13573 of May 18, 2011 Blocking Property of Senior Officials of the Government of Syria By the... of Syria's continuing escalation of violence against the people of Syria--including through attacks... be a senior official of the Government of Syria; (ii) to be an agency or instrumentality of the...

  6. 77 FR 12837 - Notice of Release of the Exposure Draft, Accounting for Impairment of General Property, Plant...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-02

    ... FEDERAL ACCOUNTING STANDARDS ADVISORY BOARD Notice of Release of the Exposure Draft, Accounting for Impairment of General Property, Plant, and Equipment Remaining in Use AGENCY: Federal Accounting... Exposure Draft, Accounting for Impairment of General Property, Plant, and Equipment Remaining in Use. The...

  7. Testing block subdivision algorithms on block designs

    NASA Astrophysics Data System (ADS)

    Wiseman, Natalie; Patterson, Zachary

    2016-01-01

    Integrated land use-transportation models predict future transportation demand taking into account how households and firms arrange themselves partly as a function of the transportation system. Recent integrated models require parcels as inputs and produce household and employment predictions at the parcel scale. Block subdivision algorithms automatically generate parcel patterns within blocks. Evaluating block subdivision algorithms is done by way of generating parcels and comparing them to those in a parcel database. Three block subdivision algorithms are evaluated on how closely they reproduce parcels of different block types found in a parcel database from Montreal, Canada. While the authors who developed each of the algorithms have evaluated them, they have used their own metrics and block types to evaluate their own algorithms. This makes it difficult to compare their strengths and weaknesses. The contribution of this paper is in resolving this difficulty with the aim of finding a better algorithm suited to subdividing each block type. The proposed hypothesis is that given the different approaches that block subdivision algorithms take, it's likely that different algorithms are better adapted to subdividing different block types. To test this, a standardized block type classification is used that consists of mutually exclusive and comprehensive categories. A statistical method is used for finding a better algorithm and the probability it will perform well for a given block type. Results suggest the oriented bounding box algorithm performs better for warped non-uniform sites, as well as gridiron and fragmented uniform sites. It also produces more similar parcel areas and widths. The Generalized Parcel Divider 1 algorithm performs better for gridiron non-uniform sites. The Straight Skeleton algorithm performs better for loop and lollipop networks as well as fragmented non-uniform and warped uniform sites. It also produces more similar parcel shapes and patterns.

  8. 18 CFR 367.1011 - Account 101.1, Property under capital leases.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Account 101.1, Property under capital leases. 367.1011 Section 367.1011 Conservation of Power and Water Resources FEDERAL ENERGY... date, (4) Original cost or fair market value of property leased, (5) Future minimum lease payments, (6...

  9. 18 CFR 367.2820 - Account 282, Accumulated deferred income taxes-Other property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Account 282, Accumulated deferred income taxes-Other property. 367.2820 Section 367.2820 Conservation of Power and Water... HOLDING COMPANY ACT OF 2005, FEDERAL POWER ACT AND NATURAL GAS ACT UNIFORM SYSTEM OF ACCOUNTS FOR...

  10. 18 CFR 367.4211 - Account 421.1, Gain on disposition of property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Account 421.1, Gain on disposition of property. 367.4211 Section 367.4211 Conservation of Power and Water Resources FEDERAL ENERGY..., FEDERAL POWER ACT AND NATURAL GAS ACT UNIFORM SYSTEM OF ACCOUNTS FOR CENTRALIZED SERVICE COMPANIES SUBJECT...

  11. 18 CFR 367.4212 - Account 421.2, Loss on disposition of property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Account 421.2, Loss on disposition of property. 367.4212 Section 367.4212 Conservation of Power and Water Resources FEDERAL ENERGY..., FEDERAL POWER ACT AND NATURAL GAS ACT UNIFORM SYSTEM OF ACCOUNTS FOR CENTRALIZED SERVICE COMPANIES SUBJECT...

  12. Tuning Structural Properties of Biocompatible Block Copolymer Micelles by Varying Solvent Composition

    NASA Astrophysics Data System (ADS)

    Cooksey, Tyler; Singh, Avantika; Mai Le, Kim; Wang, Shu; Kelley, Elizabeth; He, Lilin; Vajjala Kesava, Sameer; Gomez, Enrique; Kidd, Bryce; Madsen, Louis; Robertson, Megan

    The self-assembly of block copolymers into micelles when introduced to selective solvents enables a wide array of applications, ranging from drug delivery to personal care products to nanoreactors. In order to probe the assembly and dynamics of micellar systems, the structural properties and solvent uptake of biocompatible poly(ethylene oxide-b- ɛ-caprolactone) (PEO-PCL) diblock copolymers in deuterated water (D2O) / tetrahydrofuran (THFd8) mixtures were investigated using small-angle neutron scattering in combination with nuclear magnetic resonance. PEO-PCL block copolymers, of varying molecular weight yet constant block ratio, formed spherical micelles through a wide range of solvent compositions. Varying the composition from 10 to 60 % by volume THFd8\\ in D2O / THFd8 mixtures was a means of varying the core-corona interfacial tension in the micelle system. An increase in THFd8 content in the bulk solvent increased the solvent uptake within the micelle core, which was comparable for the two series, irrespective of the polymer molecular weight. Differences in the behaviors of the micelle size parameters as the solvent composition varied originated from the differing trends in aggregation number for the two micelle series. Incorporation of the known unimer content determined from NMR allowed refinement of extracted micelle parameters.

  13. Olfactory Blocking and Odorant Similarity in the Honeybee

    ERIC Educational Resources Information Center

    Gerber, Bertram; Giurfa, Martin; Guerrieri, Fernando; Lachnit, Harald

    2005-01-01

    Blocking occurs when previous training with a stimulus A reduces (blocks) subsequent learning about a stimulus B, when A and B are trained in compound. The question of whether blocking exists in olfactory conditioning of proboscis extension reflex (PER) in honeybees is under debate. The last published accounts on blocking in honeybees state that…

  14. 47 CFR 36.171 - Property held for future telecommunications use-Account 2002; Telecommunications plant under...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 2 2012-10-01 2012-10-01 false Property held for future telecommunications use-Account 2002; Telecommunications plant under construction-Account 2003; and Telecommunications plant adjustment-Account 2005. 36.171 Section 36.171 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED...

  15. 47 CFR 36.171 - Property held for future telecommunications use-Account 2002; Telecommunications plant under...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 2 2014-10-01 2014-10-01 false Property held for future telecommunications use-Account 2002; Telecommunications plant under construction-Account 2003; and Telecommunications plant adjustment-Account 2005. 36.171 Section 36.171 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED...

  16. 47 CFR 36.171 - Property held for future telecommunications use-Account 2002; Telecommunications plant under...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 2 2013-10-01 2013-10-01 false Property held for future telecommunications use-Account 2002; Telecommunications plant under construction-Account 2003; and Telecommunications plant adjustment-Account 2005. 36.171 Section 36.171 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED...

  17. 47 CFR 36.171 - Property held for future telecommunications use-Account 2002; Telecommunications plant under...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 2 2010-10-01 2010-10-01 false Property held for future telecommunications use-Account 2002; Telecommunications plant under construction-Account 2003; and Telecommunications plant adjustment-Account 2005. 36.171 Section 36.171 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED...

  18. 47 CFR 36.171 - Property held for future telecommunications use-Account 2002; Telecommunications plant under...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 2 2011-10-01 2011-10-01 false Property held for future telecommunications use-Account 2002; Telecommunications plant under construction-Account 2003; and Telecommunications plant adjustment-Account 2005. 36.171 Section 36.171 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED...

  19. Main-chain supramolecular block copolymers.

    PubMed

    Yang, Si Kyung; Ambade, Ashootosh V; Weck, Marcus

    2011-01-01

    Block copolymers are key building blocks for a variety of applications ranging from electronic devices to drug delivery. The material properties of block copolymers can be tuned and potentially improved by introducing noncovalent interactions in place of covalent linkages between polymeric blocks resulting in the formation of supramolecular block copolymers. Such materials combine the microphase separation behavior inherent to block copolymers with the responsiveness of supramolecular materials thereby affording dynamic and reversible materials. This tutorial review covers recent advances in main-chain supramolecular block copolymers and describes the design principles, synthetic approaches, advantages, and potential applications.

  20. Activation of spleen cells by ArtinM may account for its immunomodulatory properties.

    PubMed

    Silva, Thiago Aparecido da; Souza, Maria Aparecida de; Cecílio, Nerry Tatiana; Roque-Barreira, Maria Cristina

    2014-09-01

    ArtinM is a D-mannose-binding lectin extracted from Artocarpus heterophyllus that promotes interleukin-12 production by macrophages and dendritic cells. This property is considered responsible for T helper 1 immunity induced in vivo after ArtinM administration. In this study, we investigated the effect of native (jArtinM) and recombinant (rArtinM) forms of lectin on murine spleen cells and isolated T lymphocytes. We found that ArtinM binds to the surface of spleen cells. This interaction, which was blocked by D-mannose, induced cell activation, as manifested by increased mitochondrial activity, interleukin-2 production, and cell proliferation. We verified that a 30-times higher concentration of rArtinM was required to trigger optimal activation of spleen cells compared with that needed with jArtinM, although these proteins have identical sugar recognition properties and use the same signaling molecules to trigger cell activation. Because the distinction between native and recombinant is restricted to their tertiary structure (tetrameric and monomeric, respectively), we postulated that the multi-valence of jArtinM accounts for its superiority in promoting clustering of cell surface glycoreceptors and activation. The jArtinM and rArtinM activation effect exerted on spleen cells was reproduced on purified CD4(+) T cells. Our results suggest that ArtinM interaction with T cells leads to responses that may act in concert with the interleukin-12 produced by antigen-presenting cells to modulate immunity toward the T helper 1 axis. Further studies are necessary to dissect ArtinM/T-cell interactions to more fully understand the immunomodulation induced by carbohydrate recognition.

  1. The first row anomaly and recoupled pair bonding in the halides of the late p-block elements.

    PubMed

    Dunning, Thom H; Woon, David E; Leiding, Jeff; Chen, Lina

    2013-02-19

    The dramatic differences between the properties of molecules formed from the late p-block elements of the first row of the periodic table (N-F) and those of the corresponding elements in subsequent rows is well recognized as the first row anomaly. Certain properties of the atoms, such as the relative energies and spatial extents of the ns and np orbitals, can explain some of these differences, but not others. In this Account, we summarize the results of our recent computational studies of the halides of the late p-block elements. Our studies point to a single underlying cause for many of these differences: the ability of the late p-block elements in the second and subsequent rows of the periodic table to form recoupled pair bonds and recoupled pair bond dyads with very electronegative ligands. Recoupled pair bonds form when an electron in a singly occupied ligand orbital recouples the pair of electrons in a doubly occupied lone pair orbital on the central atom, leading to a central atom-ligand bond. Recoupled pair bond dyads occur when a second ligand forms a bond with the orbital left over from the initial recoupled pair bond. Recoupled pair bonds and recoupled pair bond dyads enable the late p-block elements to form remarkably stable hypervalent compounds such as PF(5) and SF(6) and lead to unexpected excited states in smaller halides of the late p-block elements such as SF and SF(2). Recoupled pair bonding also causes the F(n-1)X-F bond energies to oscillate dramatically once the normal valences of the central atoms have been satisfied. In addition, recoupled pair bonding provides a lower-energy pathway for inversion in heavily fluorinated compounds (PF(3) and PF(2)H, but not PH(2)F and PH(3)) and leads to unusual intermediates and products in reactions involving halogens and late p-block element compounds, such as (CH(3))(2)S + F(2). Although this Account focuses on the halides of the second row, late p-block elements, recoupled pair bonds and recoupled pair

  2. A discrete element modelling approach for block impacts on trees

    NASA Astrophysics Data System (ADS)

    Toe, David; Bourrier, Franck; Olmedo, Ignatio; Berger, Frederic

    2015-04-01

    These past few year rockfall models explicitly accounting for block shape, especially those using the Discrete Element Method (DEM), have shown a good ability to predict rockfall trajectories. Integrating forest effects into those models still remain challenging. This study aims at using a DEM approach to model impacts of blocks on trees and identify the key parameters controlling the block kinematics after the impact on a tree. A DEM impact model of a block on a tree was developed and validated using laboratory experiments. Then, key parameters were assessed using a global sensitivity analyse. Modelling the impact of a block on a tree using DEM allows taking into account large displacements, material non-linearities and contacts between the block and the tree. Tree stems are represented by flexible cylinders model as plastic beams sustaining normal, shearing, bending, and twisting loading. Root soil interactions are modelled using a rotation stiffness acting on the bending moment at the bottom of the tree and a limit bending moment to account for tree overturning. The crown is taken into account using an additional mass distribute uniformly on the upper part of the tree. The block is represented by a sphere. The contact model between the block and the stem consists of an elastic frictional model. The DEM model was validated using laboratory impact tests carried out on 41 fresh beech (Fagus Sylvatica) stems. Each stem was 1,3 m long with a diameter between 3 to 7 cm. Wood stems were clamped on a rigid structure and impacted by a 149 kg charpy pendulum. Finally an intensive simulation campaign of blocks impacting trees was done to identify the input parameters controlling the block kinematics after the impact on a tree. 20 input parameters were considered in the DEM simulation model : 12 parameters were related to the tree and 8 parameters to the block. The results highlight that the impact velocity, the stem diameter, and the block volume are the three input

  3. 78 FR 32304 - Designation of Entity Pursuant to Executive Order 13224 of September 23, 2001, “Blocking Property...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-29

    ... Who Commit, Threaten To Commit, or Support Terrorism''; Identification of Entity Pursuant to Executive... Terrorism'' and Executive Order 13582 of August 17, 2011 ``Blocking Property of the Government of Syria and...

  4. 47 CFR 36.504 - Accumulated depreciation-Property held for future telecommunications use-Account 3200.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 2 2014-10-01 2014-10-01 false Accumulated depreciation-Property held for future telecommunications use-Account 3200. 36.504 Section 36.504 Telecommunication FEDERAL... PROCEDURES FOR SEPARATING TELECOMMUNICATIONS PROPERTY COSTS, REVENUES, EXPENSES, TAXES AND RESERVES FOR...

  5. 47 CFR 36.504 - Accumulated depreciation-Property held for future telecommunications use-Account 3200.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 2 2013-10-01 2013-10-01 false Accumulated depreciation-Property held for future telecommunications use-Account 3200. 36.504 Section 36.504 Telecommunication FEDERAL... PROCEDURES FOR SEPARATING TELECOMMUNICATIONS PROPERTY COSTS, REVENUES, EXPENSES, TAXES AND RESERVES FOR...

  6. 47 CFR 36.504 - Accumulated depreciation-Property held for future telecommunications use-Account 3200.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 2 2012-10-01 2012-10-01 false Accumulated depreciation-Property held for future telecommunications use-Account 3200. 36.504 Section 36.504 Telecommunication FEDERAL... PROCEDURES FOR SEPARATING TELECOMMUNICATIONS PROPERTY COSTS, REVENUES, EXPENSES, TAXES AND RESERVES FOR...

  7. 47 CFR 36.504 - Accumulated depreciation-Property held for future telecommunications use-Account 3200.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 2 2010-10-01 2010-10-01 false Accumulated depreciation-Property held for future telecommunications use-Account 3200. 36.504 Section 36.504 Telecommunication FEDERAL... PROCEDURES FOR SEPARATING TELECOMMUNICATIONS PROPERTY COSTS, REVENUES, EXPENSES, TAXES AND RESERVES FOR...

  8. 47 CFR 36.504 - Accumulated depreciation-Property held for future telecommunications use-Account 3200.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 2 2011-10-01 2011-10-01 false Accumulated depreciation-Property held for future telecommunications use-Account 3200. 36.504 Section 36.504 Telecommunication FEDERAL... PROCEDURES FOR SEPARATING TELECOMMUNICATIONS PROPERTY COSTS, REVENUES, EXPENSES, TAXES AND RESERVES FOR...

  9. 76 FR 24787 - Blocking Property of Certain Persons With Respect to Human Rights Abuses in Syria

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-03

    ... Order 13572 of April 29, 2011 Blocking Property of Certain Persons With Respect to Human Rights Abuses..., finding that the Government of Syria's human rights abuses, including those related to the repression of... have engaged in human rights abuses, constitute an unusual and extraordinary threat to the national...

  10. Second-degree atrioventricular block.

    PubMed

    Zipes, D P

    1979-09-01

    1) While it is possible only one type of second-degree AV block exists electrophysiologically, the available data do not justify such a conclusion and it would seem more appropriate to remain a "splitter," and advocate separation and definition of multiple mechanisms, than to be a "lumper," and embrace a unitary concept. 2) The clinical classification of type I and type II AV block, based on present scalar electrocardiographic criteria, for the most part accurately differentiates clinically important categories of patients. Such a classification is descriptive, but serves a useful function and should be preserved, taking into account the caveats mentioned above. The site of block generally determines the clinical course for the patient. For most examples of AV block, the type I and type II classification in present use is based on the site of block. Because block in the His-Purkinje system is preceded by small or nonmeasurable increments, it is called type II AV block; but the very fact that it is preceded by small increments is because it occurs in the His-Purkinje system. Similar logic can be applied to type I AV block in the AV node. Exceptions do occur. If the site of AV block cannot be distinguished with certainity from the scalar ECG, an electrophysiologic study will generally reveal the answer.

  11. Picture of All Solutions of Successive 2-Block Maxbet Problems

    ERIC Educational Resources Information Center

    Choulakian, Vartan

    2011-01-01

    The Maxbet method is a generalized principal components analysis of a data set, where the group structure of the variables is taken into account. Similarly, 3-block[12,13] partial Maxdiff method is a generalization of covariance analysis, where only the covariances between blocks (1, 2) and (1, 3) are taken into account. The aim of this paper is…

  12. Thermo-Responsive Amphiphilic Block Copolymers Stablilized Gold Nanoparticles: Synthesis and High Catalytic Properties.

    PubMed

    Lü, Jianhua; Yang, Yu; Gao, Junfang; Duan, Haichao; Lü, Changli

    2018-06-19

    A series of novel well-defined 8-hydroxyquinoline (HQ)-containing thermo-responsive amphiphilic diblock copolymers poly(styrene-co-5-(2-methacryloylethyloxy- methyl)-8-quinolinol)-b-poly(N-isopropylacrylamide) P(St-co-MQ)-b-PNIPAm (P1,2), P(NIPAm- co-MQ)-b-PSt (P3,4) and triblock copolymer poly(N-isopropylacrylamide)-b-poly(methyl- methacrylate-co-5-(2-methacryloylethyloxymethyl)-8-quinolinol)-b-polystyrene PNIPAm-b- P(MMA-co-MQ)-b-PSt (P5) were prepared by reversible addition fragmentation chain transfer (RAFT) polymerization, and their self-assembly behaviors were studied. The block copolymers P1-P5 stabilized gold nanoparticles (Au@P1-Au@P5) with small size and narrow distribution were obtained through in situ reduction of gold precursors in aqueous solution of polymer micelles with HQ as the coordination groups. The resulting Au@P nanohybrids possessed excellent catalytic activities for the reduction of nitrophenols using NaBH4. The size, morphology and surface chemistry of Au NPs could be controlled by adjusting the structure of block polymers with HQ in different block positions, which plays an important role in the catalytic properties. It was found that longer chain length of hydrophilic or hydrophobic segments of block copolymers were beneficial to elevate the catalytic activity of Au NPs for the reduction of nitrophenols, and the spherical nanoparticles (Au@P5) stabilized with triblock copolymer exhibit higher catalytic performance. Surprisingly, the gold nanowires (Au@P4) produced with P4 have a highest catalytic activity due to large abundance of grain boundaries. Excellent thermo-responsive behaviors for catalytic reaction make the as-prepared Au@P hybrids become an environmentally responsive nano-catalytic materials.

  13. The First Row Anomaly and Recoupled Pair Bonding in the Halides of the Late p-Block Elements

    PubMed Central

    2012-01-01

    The dramatic differences between the properties of molecules formed from the late p-block elements of the first row of the periodic table (N–F) and those of the corresponding elements in subsequent rows is well recognized as the first row anomaly. Certain properties of the atoms, such as the relative energies and spatial extents of the ns and np orbitals, can explain some of these differences, but not others. In this Account, we summarize the results of our recent computational studies of the halides of the late p-block elements. Our studies point to a single underlying cause for many of these differences: the ability of the late p-block elements in the second and subsequent rows of the periodic table to form recoupled pair bonds and recoupled pair bond dyads with very electronegative ligands. Recoupled pair bonds form when an electron in a singly occupied ligand orbital recouples the pair of electrons in a doubly occupied lone pair orbital on the central atom, leading to a central atom-ligand bond. Recoupled pair bond dyads occur when a second ligand forms a bond with the orbital left over from the initial recoupled pair bond. Recoupled pair bonds and recoupled pair bond dyads enable the late p-block elements to form remarkably stable hypervalent compounds such as PF5 and SF6 and lead to unexpected excited states in smaller halides of the late p-block elements such as SF and SF2. Recoupled pair bonding also causes the Fn–1X–F bond energies to oscillate dramatically once the normal valences of the central atoms have been satisfied. In addition, recoupled pair bonding provides a lower-energy pathway for inversion in heavily fluorinated compounds (PF3 and PF2H, but not PH2F and PH3) and leads to unusual intermediates and products in reactions involving halogens and late p-block element compounds, such as (CH3)2S + F2. Although this Account focuses on the halides of the second row, late p-block elements, recoupled pair bonds and recoupled pair bond dyads are

  14. Biophysical properties of dermal building-blocks affects extra cellular matrix assembly in 3D endogenous macrotissue.

    PubMed

    Urciuolo, F; Garziano, A; Imparato, G; Panzetta, V; Fusco, S; Casale, C; Netti, P A

    2016-01-29

    The fabrication of functional tissue units is one of the major challenges in tissue engineering due to their in vitro use in tissue-on-chip systems, as well as in modular tissue engineering for the construction of macrotissue analogs. In this work, we aim to engineer dermal tissue micromodules obtained by culturing human dermal fibroblasts into porous gelatine microscaffold. We proved that such stromal cells coupled with gelatine microscaffolds are able to synthesize and to assemble an endogenous extracellular matrix (ECM) resulting in tissue micromodules, which evolve their biophysical features over the time. In particular, we found a time-dependent variation of oxygen consumption kinetic parameters, of newly formed ECM stiffness and of micromodules self-aggregation properties. As consequence when used as building blocks to fabricate larger tissues, the initial tissue micromodules state strongly affects the ECM organization and maturation in the final macrotissue. Such results highlight the role of the micromodules properties in controlling the formation of three-dimensional macrotissue in vitro, defining an innovative design criterion for selecting tissue-building blocks for modular tissue engineering.

  15. Blocking Plasmodium falciparum Malaria Transmission with Drugs: The Gametocytocidal and Sporontocidal Properties of Current and Prospective Antimalarials

    PubMed Central

    Kiszewski, Anthony E.

    2011-01-01

    Drugs that kill or inhibit the sexual stages of Plasmodium could potentially amplify or synergize the impact of other interventions by blocking transmission to mosquitoes. Primaquine and other 8-aminoquinolines have long offered such potential, but safety and other concerns have limited their use. Although transmission-blocking properties are not often a priority of drug discovery efforts, a number of interesting gametocytocidal and/or sporontocidal drug candidates have emerged in recent years. Some still bear significant technical and safety concerns, while others have passed clinical trials and are on the verge of entering the antimalarial armamentarium. Recent advances in our knowledge of gametocyte differentiation, gametogenesis and sporogony have also led to the identification of a large array of potential new targets for drugs that might interfere with malaria transmission. This review examines the properties of existing and prospective drugs, mechanisms of action, counter-indications and their potential role in regional malaria elimination efforts.

  16. Optoelectronic Properties of Conjugated Block Copolymer with Flexible Linking Group

    NASA Astrophysics Data System (ADS)

    Hu, Zhiqi; Verduzco, Rafael

    State-of-the-art organic photovoltaics (OPVs) are prepared by depositing a disordered, co-continuous donor and acceptor blend. While optimization of material processing has produced significant improvements in performance, a fundamental understanding of charge separation and recombination at the donor/acceptor interface is lacking. Block copolymers with donor and acceptor polymer blocks provide an opportunity for controlling the donor-accepter interfacial structure and understanding its relationship to charge separation and photovoltaic performance. Here, we report the synthesis and characterization of donor-linker-acceptor block copolymers for use in OPVs. A series of poly(3-hexylthiophene)-block- poly((9,9-dioctylfluorene)-2,7-diyl-alt-[4,7-bis(thiophen-5-yl)-2,1,3-benzothiadiazole]-2',2''-diyl) (P3HT-linkerPFTBT) are synthesized with flexible oligo-ethylene glycol (PEG) linkers. Photoluminescence measurements demonstrate that the insertion of a non-conjugated linker has a significant impact on energy transfer between the two blocks, and the block copolymers are used as additives for bulk heterojunction OPVs. This work provides insight into the charge separation process and demonstrates a technique for tailoring the donor-accepter interface in OPVs.

  17. 76 FR 52209 - Blocking Property of the Government of Syria and Prohibiting Certain Transactions With Respect to...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-22

    ... Order 13582 of August 17, 2011 Blocking Property of the Government of Syria and Prohibiting Certain Transactions With Respect to Syria By the authority vested in me as President by the Constitution and the laws... additional steps with respect to the Government of Syria's continuing escalation of violence against the...

  18. 31 CFR 500.556 - Joint bank accounts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY FOREIGN ASSETS CONTROL REGULATIONS Licenses... unblocking a portion of or all of a blocked joint bank account where a non-blocked applicant claims... survivorship provision. Specific licenses are issued unblocking an amount equivalent to that portion of the...

  19. Properties of Fly Ash Blocks Made from Adobe Mould

    NASA Astrophysics Data System (ADS)

    Chokhani, Alankrit; Divakar, B. S.; Jawalgi, Archana S.; Renukadevi, M. V.; Jagadish, K. S.

    2018-02-01

    Fly ash being one of the industrial waste products poses a serious disposal problem. This paper presents an experimental study of utilization of fly ash to produce blocks with varying proportions and mix combinations. Composition of fly ash blocks mainly consist of fly ash and sand, with cementitious product as either cement, lime or both, such as fly ash-sand-cement, fly ash-sand-lime and fly ash-sand-cement-lime are used. Four different proportions for each of the mix combinations are experimented. Compressive strength, water absorption, Initial rate of absorption, and dry density of fly ash blocks are studied. The influence of partial and complete replacement of cement by lime is examined.

  20. Properties of Fly Ash Blocks Made from Adobe Mould

    NASA Astrophysics Data System (ADS)

    Chokhani, Alankrit; Divakar, B. S.; Jawalgi, Archana S.; Renukadevi, M. V.; Jagadish, K. S.

    2018-06-01

    Fly ash being one of the industrial waste products poses a serious disposal problem. This paper presents an experimental study of utilization of fly ash to produce blocks with varying proportions and mix combinations. Composition of fly ash blocks mainly consist of fly ash and sand, with cementitious product as either cement, lime or both, such as fly ash-sand-cement, fly ash-sand-lime and fly ash-sand-cement-lime are used. Four different proportions for each of the mix combinations are experimented. Compressive strength, water absorption, Initial rate of absorption, and dry density of fly ash blocks are studied. The influence of partial and complete replacement of cement by lime is examined.

  1. Superalloy Lattice Block Structures

    NASA Technical Reports Server (NTRS)

    Nathal, M. V.; Whittenberger, J. D.; Hebsur, M. G.; Kantzos, P. T.; Krause, D. L.

    2004-01-01

    Initial investigations of investment cast superalloy lattice block suggest that this technology will yield a low cost approach to utilize the high temperature strength and environmental resistance of superalloys in lightweight, damage tolerant structural configurations. Work to date has demonstrated that relatively large superalloy lattice block panels can be successfully investment cast from both IN-718 and Mar-M247. These castings exhibited mechanical properties consistent with the strength of the same superalloys measured from more conventional castings. The lattice block structure also accommodates significant deformation without failure, and is defect tolerant in fatigue. The potential of lattice block structures opens new opportunities for the use of superalloys in future generations of aircraft applications that demand strength and environmental resistance at elevated temperatures along with low weight.

  2. Fabrication routes for one-dimensional nanostructures via block copolymers

    NASA Astrophysics Data System (ADS)

    Tharmavaram, Maithri; Rawtani, Deepak; Pandey, Gaurav

    2017-05-01

    Nanotechnology is the field which deals with fabrication of materials with dimensions in the nanometer range by manipulating atoms and molecules. Various synthesis routes exist for the one, two and three dimensional nanostructures. Recent advancements in nanotechnology have enabled the usage of block copolymers for the synthesis of such nanostructures. Block copolymers are versatile polymers with unique properties and come in many types and shapes. Their properties are highly dependent on the blocks of the copolymers, thus allowing easy tunability of its properties. This review briefly focusses on the use of block copolymers for synthesizing one-dimensional nanostructures especially nanowires, nanorods, nanoribbons and nanofibers. Template based, lithographic, and solution based approaches are common approaches in the synthesis of nanowires, nanorods, nanoribbons, and nanofibers. Synthesis of metal, metal oxides, metal oxalates, polymer, and graphene one dimensional nanostructures using block copolymers have been discussed as well.

  3. Molecular modeling of the elastomeric properties of repeating units and building blocks of resilin, a disordered elastic protein.

    PubMed

    Khandaker, Md Shahriar K; Dudek, Daniel M; Beers, Eric P; Dillard, David A; Bevan, David R

    2016-08-01

    The mechanisms responsible for the properties of disordered elastomeric proteins are not well known. To better understand the relationship between elastomeric behavior and amino acid sequence, we investigated resilin, a disordered rubber-like protein, found in specialized regions of the cuticle of insects. Resilin of Drosophila melanogaster contains Gly-rich repetitive motifs comprised of the amino acids, PSSSYGAPGGGNGGR, which confer elastic properties to resilin. The repetitive motifs of insect resilin can be divided into smaller partially conserved building blocks: PSS, SYGAP, GGGN and GGR. Using molecular dynamics (MD) simulations, we studied the relative roles of SYGAP, and its less common variants SYSAP and TYGAP, on the elastomeric properties of resilin. Results showed that SYGAP adopts a bent structure that is one-half to one-third the end-to-end length of the other motifs having an equal number of amino acids but containing SYSAP or TYGAP substituted for SYGAP. The bent structure of SYGAP forms due to conformational freedom of glycine, and hydrogen bonding within the motif apparently plays a role in maintaining this conformation. These structural features of SYGAP result in higher extensibility compared to other motifs, which may contribute to elastic properties at the macroscopic level. Overall, the results are consistent with a role for the SYGAP building block in the elastomeric properties of these disordered proteins. What we learned from simulating the repetitive motifs of resilin may be applicable to the biology and mechanics of other elastomeric biomaterials, and may provide us the deeper understanding of their unique properties. Copyright © 2016 Elsevier Ltd. All rights reserved.

  4. Development of Alkali Activated Geopolymer Masonry Blocks

    NASA Astrophysics Data System (ADS)

    Venugopal, K.; Radhakrishna; Sasalatti, Vinod

    2016-09-01

    Cement masonry units are not considered as sustainable since their production involves consumption of fuel, cement and natural resources and therefore it is essential to find alternatives. This paper reports on making of geopolymer solid & hollow blocks and masonry prisms using non conventional materials like fly ash, ground granulated blast furnace slag (GGBFS) and manufactured sand and curing at ambient temperature. They were tested for water absorption, initial rate of water absorption, dry density, dimensionality, compressive, flexural and bond-strength which were tested for bond strength with and without lateral confinement, modulus of elasticity, alternative drying & wetting and masonry efficiency. The properties of geopolymer blocks were found superior to traditional masonry blocks and the masonry efficiency was found to increase with decrease in thickness of cement mortar joints. There was marginal difference in strength between rendered and unrendered geopolymer masonry blocks. The percentage weight gain after 7 cycles was less than 6% and the percentage reduction in strength of geopolymer solid blocks and hollow blocks were 26% and 28% respectively. Since the properties of geopolymer blocks are comparatively better than the traditional masonry they can be strongly recommended for structural masonry.

  5. Block copolymer systems: from single chain to self-assembled nanostructures.

    PubMed

    Giacomelli, Cristiano; Schmidt, Vanessa; Aissou, Karim; Borsali, Redouane

    2010-10-19

    Recent advances in the field of macromolecular engineering applied to the fabrication of nanostructured materials using block copolymer chains as elementary building blocks are described in this feature article. By highlighting some of our work in the area and accounting for the contribution of other groups, we discuss the relationship between the physical-chemical properties of copolymer chains and the characteristics of nano-objects originating from their self-assembly in solution and in bulk, with emphasis on convenient strategies that allow for the control of composition, functionality, and topology at different levels of sophistication. In the case of micellar nanoparticles in solution, in particular, we present approaches leading to morphology selection via macromolecular architectural design, the functionalization of external solvent-philic shells with biomolecules (polysaccharides and proteins), and the maximization of micelle loading capacity by the suitable choice of solvent-phobic polymer segments. The fabrication of nanomaterials mediated by thin block copolymer films is also discussed. In this case, we emphasize the development of novel polymer chain manipulation strategies that ultimately allow for the preparation of precisely positioned nanodomains with a reduced number of defects via block-selective chemical reactivity. The challenges facing the soft matter community, the urgent demand to convert huge public and private investments into consumer products, and future possible directions in the field are also considered herein.

  6. Accelerated detection of brown-rot decay : comparison of soil block test, chemical analysis, mechanical properties, and immunodetection

    Treesearch

    C. A. Clausen; S. N. Kartal

    2003-01-01

    Early detection of wood decay is critical because decay fungi can cause rapid structural failure. The objective of this study was to compare the sensitivity of different methods purported to detect brown-rot decay in the early stages of development. The immunodiagnostic wood decay (IWD)test, soil block test/cake pan test, mechanical property tests, and chemical...

  7. 49 CFR 1242.37 - Dismantling retired property and depreciation (accounts XX-26-39 and 62-26-00).

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Dismantling retired property and depreciation (accounts XX-26-39 and 62-26-00). 1242.37 Section 1242.37 Transportation Other Regulations Relating to... (accounts XX-26-39 and 62-26-00). Separate common expenses in each account in proportion to the separation...

  8. 21 CFR 882.1925 - Ultrasonic scanner calibration test block.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Ultrasonic scanner calibration test block. 882... Ultrasonic scanner calibration test block. (a) Identification. An ultrasonic scanner calibration test block is a block of material with known properties used to calibrate ultrasonic scanning devices (e.g., the...

  9. 31 CFR 515.551 - Joint bank accounts.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY CUBAN ASSETS CONTROL REGULATIONS Licenses... more of the persons in whose names the account is held is a blocked national, where a non-blocked... equivalent to that portion of the total amount to which the applicant would be entitled if the total were...

  10. 31 CFR 515.551 - Joint bank accounts.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY CUBAN ASSETS CONTROL REGULATIONS Licenses... more of the persons in whose names the account is held is a blocked national, where a non-blocked... equivalent to that portion of the total amount to which the applicant would be entitled if the total were...

  11. 31 CFR 515.551 - Joint bank accounts.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY CUBAN ASSETS CONTROL REGULATIONS Licenses... more of the persons in whose names the account is held is a blocked national, where a non-blocked... equivalent to that portion of the total amount to which the applicant would be entitled if the total were...

  12. 31 CFR 515.551 - Joint bank accounts.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY CUBAN ASSETS CONTROL REGULATIONS Licenses... more of the persons in whose names the account is held is a blocked national, where a non-blocked... equivalent to that portion of the total amount to which the applicant would be entitled if the total were...

  13. 31 CFR 515.551 - Joint bank accounts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY CUBAN ASSETS CONTROL REGULATIONS Licenses... more of the persons in whose names the account is held is a blocked national, where a non-blocked... equivalent to that portion of the total amount to which the applicant would be entitled if the total were...

  14. Powered Explicit Guidance Modifications and Enhancements for Space Launch System Block-1 and Block-1B Vehicles

    NASA Technical Reports Server (NTRS)

    Von der Porten, Paul; Ahmad, Naeem; Hawkins, Matt; Fill, Thomas

    2018-01-01

    NASA is currently building the Space Launch System (SLS) Block-1 launch vehicle for the Exploration Mission 1 (EM-1) test flight. NASA is also currently designing the next evolution of SLS, the Block-1B. The Block-1 and Block-1B vehicles will use the Powered Explicit Guidance (PEG) algorithm (of Space Shuttle heritage) for closed loop guidance. To accommodate vehicle capabilities and design for future evolutions of SLS, modifications were made to PEG for Block-1 to handle multi-phase burns, provide PEG updated propulsion information, and react to a core stage engine out. In addition, due to the relatively low thrust-to-weight ratio of the Exploration Upper Stage (EUS) and EUS carrying out Lunar Vicinity and Earth Escape missions, certain enhancements to the Block-1 PEG algorithm are needed to perform Block-1B missions to account for long burn arcs and target translunar and hyperbolic orbits. This paper describes the design and implementation of modifications to the Block-1 PEG algorithm as compared to Space Shuttle. Furthermore, this paper illustrates challenges posed by the Block-1B vehicle and the required PEG enhancements. These improvements make PEG capable for use on the SLS Block-1B vehicle as part of the Guidance, Navigation, and Control (GN&C) System.

  15. Influence of gravity on deformation of blocks in Earth's crust

    NASA Astrophysics Data System (ADS)

    Tataurova, A. A.; Stefanov, Yu. P.; Bakeev, R. A.

    2017-12-01

    The article presents the results of numerical calculations of deformation using an Earth's crust model fragment under the influence of gravitational force. It is shown that plastic deformation in low-strength blocks changes the stress-strain state in the medium and produces a surface deflection which is hundred meters deep. The deflection is defined by the properties of the medium, its extent, and conditions at the lateral boundaries. The order of load application beyond the elastic limit affects the development of deformation, which should be taken into account when formulating problems and performing numerical simulations. The problem has been solved using a two-dimensional elastoplastic approach.

  16. Moisture and Thermal Conductivity of Lightweight Block Walls

    NASA Astrophysics Data System (ADS)

    Joosep, R.

    2015-11-01

    This article examines thermal properties of lightweight block walls and their changes over the course of time. Three different types of lightweight blocks and two types of heat insulation are used in construction. Aeroc aerated concrete blocks are in use, as well as compacted LECA (Lightweight Expanded Clay Aggregate) Fibo blocks made from burned clay and Silbet blocks produced from oil shale ash. Expanded Thermisol EPS60F polystyrene plates and glass wool Isover OL-P plates are used for thermal insulation. The actual and computational values of thermal conductivity and the water draining properties of walls over time are compared in this article. Water draining from glass wool walls is relatively fast. Water-draining can take over a year in polystyrene insulated walls. All four wall constructions can be used as external walls, but care must be taken regarding the moisture content of the blocks during construction (the construction should be handled with care to minimise the moisture in the blocks), especially in polystyrene board-insulated walls.

  17. Three-dimensional Reconstruction of Block Shape Irregularity and its Effects on Block Impacts Using an Energy-Based Approach

    NASA Astrophysics Data System (ADS)

    Zhang, Yulong; Liu, Zaobao; Shi, Chong; Shao, Jianfu

    2018-04-01

    This study is devoted to three-dimensional modeling of small falling rocks in block impact analysis in energy view using the particle flow method. The restitution coefficient of rockfall collision is introduced from the energy consumption mechanism to describe rockfall-impacting properties. Three-dimensional reconstruction of falling block is conducted with the help of spherical harmonic functions that have satisfactory mathematical properties such as orthogonality and rotation invariance. Numerical modeling of the block impact to the bedrock is analyzed with both the sphere-simplified model and the 3D reconstructed model. Comparisons of the obtained results suggest that the 3D reconstructed model is advantageous in considering the combination effects of rockfall velocity and rotations during colliding process. Verification of the modeling is carried out with the results obtained from other experiments. In addition, the effects of rockfall morphology, surface characteristics, velocity, and volume, colliding damping and relative angle are investigated. A three-dimensional reconstruction modulus of falling blocks is to be developed and incorporated into the rockfall simulation tools in order to extend the modeling results at block scale to slope scale.

  18. Benzodiazepine-associated atrioventricular block.

    PubMed

    Arroyo Plasencia, Anna M; Ballentine, Lynn M; Mowry, James B; Kao, Louise W

    2012-01-01

    Dysrhythmias, although common in overdose situations, are not often seen after benzodiazepine exposures. We report two cases of transient atrioventricular block after benzodiazepine misuse. Case 1 is a 4-year-old boy who was found unresponsive after an ingestion of clonazepam. An electrocardiogram (EKG) performed on emergency department presentation demonstrated first-degree atrioventricular block (PR 206 ms). After flumazenil administration, he developed second-degree atrioventricular block (Mobitz Type 1). EKG abnormalities resolved by morning. Serum clonazepam was 478 ng/mL (laboratory clonazepam reference range, 10-75 ng/mL with a dose of up to 6 mg/day) 5 hours after being found unresponsive. Case 2 is a 23-year-old man who presented to the emergency department after ingesting risperidone, combination hydrocodone/acetaminophen, and alprazolam. On arrival, his EKG demonstrated sinus bradycardia with a PR interval of 182 msec. He subsequently developed second-degree atrioventricular block (Mobitz Type I). Sinus bradycardia with resolution of his atrioventricular block (PR 200 ms) was seen on a third EKG performed 5 hours after presentation. These two patients demonstrated transient first- and second-degree atrioventricular block after benzodiazepine exposure. Benzodiazepines have been shown to alter L-type Ca2+ channel function. This alteration in function may account for the dysrhythmias seen in our patients. Together, these cases serve to remind clinicians of this rare but potentially serious complication associated with benzodiazepine exposure.

  19. The neuromuscular blocking properties of a series of bis-quaternary tropeïnes

    PubMed Central

    Haining, C. G.; Johnston, R. G.; Smith, J. M.

    1960-01-01

    Linkage of two tropine esters through their nitrogen atoms by the chain -[CH2]m-O-CO-[CH2]n-CO-O-[CH2]m-, in which m was 2 or 3 and n varied from 0 to 6, gave compounds which produced neuromuscular block without depolarization. Reversibility be neostigmine was confirmed for a few compounds. Potency was found to depend upon the tropine ester employed and upon the values of n and m. Short duration and hypotensive properties were favoured by the higher values of n. The duration of action of the compound based on the phenylacetic acid ester of tropine, in which n=4 and m=2, varied considerably in different species. Epimerization, in which the relative positions of the methyl group and the linking chain on the quaternary tropane nitrogen atom were reversed, did not produce subtances having more favourable properties than those possessed by the unepimerized compounds. PMID:14398886

  20. 14 CFR Sec. 1-4 - System of accounts coding.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... General Accounting Provisions Sec. 1-4 System of accounts coding. (a) A four digit control number is assigned for each balance sheet and profit and loss account. Each balance sheet account is numbered sequentially, within blocks, designating basic balance sheet classifications. The first two digits of the four...

  1. Responsive linear-dendritic block copolymers.

    PubMed

    Blasco, Eva; Piñol, Milagros; Oriol, Luis

    2014-06-01

    The combination of dendritic and linear polymeric structures in the same macromolecule opens up new possibilities for the design of block copolymers and for applications of functional polymers that have self-assembly properties. There are three main strategies for the synthesis of linear-dendritic block copolymers (LDBCs) and, in particular, the emergence of click chemistry has made the coupling of preformed blocks one of the most efficient ways of obtaining libraries of LDBCs. In these materials, the periphery of the dendron can be precisely functionalised to obtain functional LDBCs with self-assembly properties of interest in different technological areas. The incorporation of stimuli-responsive moieties gives rise to smart materials that are generally processed as self-assemblies of amphiphilic LDBCs with a morphology that can be controlled by an external stimulus. Particular emphasis is placed on light-responsive LDBCs. Furthermore, a brief review of the biomedical or materials science applications of LDBCs is presented. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  2. Polybenzimidazole block copolymers for fuel cell: synthesis and studies of block length effects on nanophase separation, mechanical properties, and proton conductivity of PEM.

    PubMed

    Maity, Sudhangshu; Jana, Tushar

    2014-05-14

    A series of meta-polybenzimidazole-block-para-polybenzimidazole (m-PBI-b-p-PBI), segmented block copolymers of PBI, were synthesized with various structural motifs and block lengths by condensing the diamine terminated meta-PBI (m-PBI-Am) and acid terminated para-PBI (p-PBI-Ac) oligomers. NMR studies and existence of two distinct glass transition temperatures (Tg), obtained from dynamical mechanical analysis (DMA) results, unequivocally confirmed the formation of block copolymer structure through the current polymerization methodology. Appropriate and careful selection of oligomers chain length enabled us to tailor the block length of block copolymers and also to make varieties of structural motifs. Increasingly distinct Tg peaks with higher block length of segmented block structure attributed the decrease in phase mixing between the meta-PBI and para-PBI blocks, which in turn resulted into nanophase segregated domains. The proton conductivities of proton exchange membrane (PEM) developed from phosphoric acid (PA) doped block copolymer membranes were found to be increasing substantially with increasing block length of copolymers even though PA loading of these membranes did not alter appreciably with varying block length. For example when molecular weight (Mn) of blocks were increased from 1000 to 5500 then the proton conductivities at 160 °C of resulting copolymers increased from 0.05 to 0.11 S/cm. Higher block length induced nanophase separation between the blocks by creating less morphological barrier within the block which facilitated the movement of the proton in the block and hence resulting higher proton conductivity of the PEM. The structural varieties also influenced the phase separation and proton conductivity. In comparison to meta-para random copolymers reported earlier, the current meta-para segmented block copolymers were found to be more suitable for PBI-based PEM.

  3. Highly Conductive Anion Exchange Block Copolymers

    DTIC Science & Technology

    We are developing a comprehensive fundamental understanding of the interplay between transport and morphology in newly synthesized hydroxide...conducting block copolymers. We are synthesizing hydroxide conducting block copolymers of various (1) morphology types, (2) ionic concentrations, and (3...ionic domain sizes. We are carefully characterizing the morphology and transport properties using both conventional and new advanced in situ techniques

  4. Effects of block copolymer properties on nanocarrier protection from in vivo clearance

    PubMed Central

    D’Addio, Suzanne M.; Saad, Walid; Ansell, Steven M.; Squiers, John J.; Adamson, Douglas; Herrera-Alonso, Margarita; Wohl, Adam R.; Hoye, Thomas R.; Macosko, Christopher W.; Mayer, Lawrence D.; Vauthier, Christine; Prud’homme, Robert K.

    2012-01-01

    Drug nanocarrier clearance by the immune system must be minimized to achieve targeted delivery to pathological tissues. There is considerable interest in finding in vitro tests that can predict in vivo clearance outcomes. In this work, we produce nanocarriers with dense PEG layers resulting from block copolymer-directed assembly during rapid precipitation. Nanocarriers are formed using block copolymers with hydrophobic blocks of polystyrene (PS), poly-ε-caprolactone (PCL), poly-D,L-lactide (PLA), or poly-lactide-co-glycolide (PLGA), and hydrophilic blocks of polyethylene glycol (PEG) with molecular weights from 1.5 kg/mol to 9 kg/mol. Nanocarriers with paclitaxel prodrugs are evaluated in vivo in Foxn1nu mice to determine relative rates of clearance. The amount of nanocarrier in circulation after 4 h varies from 10% to 85% of initial dose, depending on the block copolymer. In vitro complement activation assays are conducted in an effort to correlate the protection of the nanocarrier surface from complement binding and activation and in vivo circulation. Guidelines for optimizing block copolymer structure to maximize circulation of nanocarriers formed by rapid precipitation and directed assembly are proposed, relating to the relative size of the hydrophilic and hydrophobic block, the hydrophobicity of the anchoring block, the absolute size of the PEG block, and polymer crystallinity. The in vitro results distinguish between the poorly circulating PEG5k-PCL9k and the better circulating nanocarriers, but could not rank the better circulating nanocarriers in order of circulation time. Analysis of PEG surface packing on monodisperse 200 nm latex spheres indicates that the sizes of the hydrophobic PCL, PS, and PLA blocks are correlated with the PEG blob size, and possibly the clearance from circulation. Suggestions for next step in vitro measurements are made. PMID:22732478

  5. Rapid self-assembly of block copolymers to photonic crystals

    DOEpatents

    Xia, Yan; Sveinbjornsson, Benjamin R; Grubbs, Robert H; Weitekamp, Raymond; Miyake, Garret M; Atwater, Harry A; Piunova, Victoria; Daeffler, Christopher Scot; Hong, Sung Woo; Gu, Weiyin; Russell, Thomas P.

    2016-07-05

    The invention provides a class of copolymers having useful properties, including brush block copolymers, wedge-type block copolymers and hybrid wedge and polymer block copolymers. In an embodiment, for example, block copolymers of the invention incorporate chemically different blocks comprising polymer size chain groups and/or wedge groups that significantly inhibit chain entanglement, thereby enhancing molecular self-assembly processes for generating a range of supramolecular structures, such as periodic nanostructures and microstructures. The present invention also provides useful methods of making and using copolymers, including block copolymers.

  6. Self-assembly of block copolymer micelles: synthesis via reversible addition-fragmentation chain transfer polymerization and aqueous solution properties.

    PubMed

    Mya, Khine Y; Lin, Esther M J; Gudipati, Chakravarthy S; Gose, Halima B A S; He, Chaobin

    2010-07-22

    Poly(hexafluorobutyl methacrylate) (PHFBMA) homopolymer was synthesized by reversible addition-fragmentation chain transfer (RAFT)-mediated living radical polymerization in the presence of cyano-2-propyl dithiobenzoate (CPDB) RAFT agent. A block copolymer of PHFBMA-poly(propylene glycol acrylate) (PHFBMA-b-PPGA) with dangling poly(propylene glycol) (PPG) side chains was then synthesized by using CPDB-terminated PHFBMA as a macro-RAFT agent. The amphiphilic properties and self-assembly of PHFBMA-b-PPGA block copolymer in aqueous solution were investigated by dynamic and static light scattering (DLS and SLS) studies, in combination with fluorescence spectroscopy and transmission electron microscopy (TEM). Although PPG shows moderately hydrophilic character, the formation of nanosize polymeric micelles was confirmed by fluorescence and TEM studies. The low value of the critical aggregation concentration exhibited that the tendency for the formation of copolymer aggregates in aqueous solution was very high due to the strong hydrophobicity of the PHFBMA(145)-b-PPGA(33) block copolymer. The combination of DLS and SLS measurements revealed the existence of micellar aggregates in aqueous solution with an association number of approximately 40 +/- 7 for block copolymer micelles. It was also found in TEM observation that there are 40-50 micelles accumulated into one aggregate and these micelles are loosely packed inside the aggregate.

  7. 32 CFR 623.4 - Accounting procedures.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 3 2010-07-01 2010-07-01 true Accounting procedures. 623.4 Section 623.4... ARMY MATERIEL § 623.4 Accounting procedures. (a) Loan document format. (1) When the lending accountable... property accounting purposes. (3) Loans will be processed by accountable property officers according to...

  8. Conformal Nets II: Conformal Blocks

    NASA Astrophysics Data System (ADS)

    Bartels, Arthur; Douglas, Christopher L.; Henriques, André

    2017-08-01

    Conformal nets provide a mathematical formalism for conformal field theory. Associated to a conformal net with finite index, we give a construction of the `bundle of conformal blocks', a representation of the mapping class groupoid of closed topological surfaces into the category of finite-dimensional projective Hilbert spaces. We also construct infinite-dimensional spaces of conformal blocks for topological surfaces with smooth boundary. We prove that the conformal blocks satisfy a factorization formula for gluing surfaces along circles, and an analogous formula for gluing surfaces along intervals. We use this interval factorization property to give a new proof of the modularity of the category of representations of a conformal net.

  9. 31 CFR 587.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... charges authorized. (a) A U.S. financial institution is authorized to debit any blocked account held at that financial institution in payment or reimbursement for normal service charges owed it by the owner of that blocked account. (b) As used in this section, the term normal service charge shall include...

  10. 31 CFR 540.504 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Statements of Licensing Policy § 540.504 Entries in certain accounts for normal service charges authorized. (a) A U.S. financial institution is authorized to debit any blocked account held by that financial institution in payment or reimbursement for normal service charges owed to it by the owner of the blocked...

  11. Incorporating fluorinated moieties in fully conjugated donor-acceptor block copolymers

    NASA Astrophysics Data System (ADS)

    Lee, Youngmin; Wang, Qing; Gomez, Enrique D.

    Fully conjugated donor-acceptor block copolymers are promising candidates for photovoltaics due to their ability to microphase separate at length scales commensurate with exciton diffusion lengths. These materials can also serve as model systems to study the relationship between molecular structure, microstructure, and optoelectronic properties of conjugated polymers. The development of new donor-acceptor block copolymers relies on the manipulation of the chemical structure to fine tune properties and improve overall performance when employed in photovoltaic devices. To this end, we have demonstrated the incorporation of fluorinated moieties in conjugated block copolymers. The introduction of fluorine, a strong electron withdrawing element, is known to influence phase separation and the bandgap, and as a result, optoelectronic properties. Fluorine was introduced to the acceptor block of poly(3-hexylthiophene-2,5-diyl)-block-poly((9,9-bis(2-octyl)fluorene-2,7-diyl)-alt-(4,7-di(thiophene-2-yl)-2,1,3-benzothiadiazole)-5 ',5?-diyl) (P3HT- b-PFTBT). PFTBTs were prepared with di-fluorinated and mono-fluorinated TBT. We find that fluorination impacts the bandgap, morphology and performance in devices.

  12. 49 CFR 1242.51 - Dismantling retired property and depreciation (accounts XX-27-39 and 62-27-00).

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Dismantling retired property and depreciation (accounts XX-27-39 and 62-27-00). 1242.51 Section 1242.51 Transportation Other Regulations Relating to... (accounts XX-27-39 and 62-27-00). Separate common expenses in proportion to the separation of common repair...

  13. 18 CFR 367.1110 - Account 111, Accumulated provision for amortization of service company property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... THE PUBLIC UTILITY HOLDING COMPANY ACT OF 2005, FEDERAL POWER ACT AND NATURAL GAS ACT UNIFORM SYSTEM OF ACCOUNTS FOR CENTRALIZED SERVICE COMPANIES SUBJECT TO THE PROVISIONS OF THE PUBLIC UTILITY HOLDING... (§ 367.4040), for the current amortization of limited-term service company property investments. (2...

  14. Property transmission: an explanatory account of the role of similarity information in causal inference.

    PubMed

    White, Peter A

    2009-09-01

    Many kinds of common and easily observed causal relations exhibit property transmission, which is a tendency for the causal object to impose its own properties on the effect object. It is proposed that property transmission becomes a general and readily available hypothesis used to make interpretations and judgments about causal questions under conditions of uncertainty, in which property transmission functions as a heuristic. The property transmission hypothesis explains why and when similarity information is used in causal inference. It can account for magical contagion beliefs, some cases of illusory correlation, the correspondence bias, overestimation of cross-situational consistency in behavior, nonregressive tendencies in prediction, the belief that acts of will are causes of behavior, and a range of other phenomena. People learn that property transmission is often moderated by other factors, but under conditions of uncertainty in which the operation of relevant other factors is unknown, it tends to exhibit a pervasive influence on thinking about causality. (c) 2009 APA, all rights reserved.

  15. Ion Transport in Nanostructured Block Copolymer/Ionic Liquid Membranes

    NASA Astrophysics Data System (ADS)

    Hoarfrost, Megan Lane

    Incorporating an ionic liquid into one block copolymer microphase provides a platform for combining the outstanding electrochemical properties of ionic liquids with a number of favorable attributes provided by block copolymers. In particular, block copolymers thermodynamically self-assemble into well-ordered nanostructures, which can be engineered to provide a durable mechanical scaffold and template the ionic liquid into continuous ion-conducting nanochannels. Understanding how the addition of an ionic liquid affects the thermodynamic self-assembly of block copolymers, and how the confinement of ionic liquids to block copolymer nanodomains affects their ion-conducting properties is essential for predictable structure-property control. The lyotropic phase behavior of block copolymer/ionic liquid mixtures is shown to be reminiscent of mixtures of block copolymers with selective molecular solvents. A variety of ordered microstructures corresponding to lamellae, hexagonally close-packed cylinders, body-centered cubic, and face-centered cubic oriented micelles are observed in a model system composed of mixtures of imidazolium bis(trifluoromethylsulfonyl)imide ([Im][TFSI]) and poly(styrene- b-2-vinyl pyridine) (PS-b-P2VP). In contrast to block copolymer/molecular solvent mixtures, the interfacial area occupied by each PS-b-P2VP chain decreases upon the addition of [Im][TFSI], indicating a considerable increase in the effective segregation strength of the PS-b-P2VP copolymer with ionic liquid addition. The relationship between membrane structure and ionic conductivity is illuminated through the development of scaling relationships that describe the ionic conductivity of block copolymer/ionic liquid mixtures as a function of membrane composition and temperature. It is shown that the dominant variable influencing conductivity is the overall volume fraction of ionic liquid in the mixture, which means there

  16. Best Practices in Juvenile Accountability: Overview. JAIBG Bulletin.

    ERIC Educational Resources Information Center

    Beyer, Marty

    This bulletin examines the Office of Juvenile Justice and Delinquency Prevention's Juvenile Accountability Incentive Block Grants (JAIBG) program, which asserts that juvenile offenders should be held accountable for their crimes as a matter of basic justice and to prevent and deter delinquency. It reviews the developmental perspective shaping…

  17. Light extraction block with curved surface

    DOEpatents

    Levermore, Peter; Krall, Emory; Silvernail, Jeffrey; Rajan, Kamala; Brown, Julia J.

    2016-03-22

    Light extraction blocks, and OLED lighting panels using light extraction blocks, are described, in which the light extraction blocks include various curved shapes that provide improved light extraction properties compared to parallel emissive surface, and a thinner form factor and better light extraction than a hemisphere. Lighting systems described herein may include a light source with an OLED panel. A light extraction block with a three-dimensional light emitting surface may be optically coupled to the light source. The three-dimensional light emitting surface of the block may includes a substantially curved surface, with further characteristics related to the curvature of the surface at given points. A first radius of curvature corresponding to a maximum principal curvature k.sub.1 at a point p on the substantially curved surface may be greater than a maximum height of the light extraction block. A maximum height of the light extraction block may be less than 50% of a maximum width of the light extraction block. Surfaces with cross sections made up of line segments and inflection points may also be fit to approximated curves for calculating the radius of curvature.

  18. The Implementation of a Plant and Minor Property Accounting System for the Naval Postgraduate School.

    DTIC Science & Technology

    1987-09-01

    Autmatic Data Processing iquipment CPU Central Procesing Unit DSA Date lase Administrator USU Data "aso Management system D&XC Defense Automation...ground? -How big is a certain piece of plant property (e.g., for shipment)? 2. Nxnected Data Base Volume The current inventory of NPS plant property...System, Automated Data TU I. 89aom so fg o - e In October 136 the aval Postgraduate School was directed to centralize the accounting and control of

  19. Application of Bottlebrush Block Copolymers as Photonic Crystals.

    PubMed

    Liberman-Martin, Allegra L; Chu, Crystal K; Grubbs, Robert H

    2017-07-01

    Brush block copolymers are a class of comb polymers that feature polymeric side chains densely grafted to a linear backbone. These polymers display interesting properties due to their dense functionality, low entanglement, and ability to rapidly self-assemble to highly ordered nanostructures. The ability to prepare brush polymers with precise structures has been enabled by advancements in controlled polymerization techniques. This Feature Article highlights the development of brush block copolymers as photonic crystals that can reflect visible to near-infrared wavelengths of light. Fabrication of these materials relies on polymer self-assembly processes to achieve nanoscale ordering, which allows for the rapid preparation of photonic crystals from common organic chemical feedstocks. The characteristic physical properties of brush block copolymers are discussed, along with methods for their preparation. Strategies to induce self-assembly at ambient temperatures and the use of blending techniques to tune photonic properties are emphasized. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  20. Modeling haplotype block variation using Markov chains.

    PubMed

    Greenspan, G; Geiger, D

    2006-04-01

    Models of background variation in genomic regions form the basis of linkage disequilibrium mapping methods. In this work we analyze a background model that groups SNPs into haplotype blocks and represents the dependencies between blocks by a Markov chain. We develop an error measure to compare the performance of this model against the common model that assumes that blocks are independent. By examining data from the International Haplotype Mapping project, we show how the Markov model over haplotype blocks is most accurate when representing blocks in strong linkage disequilibrium. This contrasts with the independent model, which is rendered less accurate by linkage disequilibrium. We provide a theoretical explanation for this surprising property of the Markov model and relate its behavior to allele diversity.

  1. Modeling Haplotype Block Variation Using Markov Chains

    PubMed Central

    Greenspan, G.; Geiger, D.

    2006-01-01

    Models of background variation in genomic regions form the basis of linkage disequilibrium mapping methods. In this work we analyze a background model that groups SNPs into haplotype blocks and represents the dependencies between blocks by a Markov chain. We develop an error measure to compare the performance of this model against the common model that assumes that blocks are independent. By examining data from the International Haplotype Mapping project, we show how the Markov model over haplotype blocks is most accurate when representing blocks in strong linkage disequilibrium. This contrasts with the independent model, which is rendered less accurate by linkage disequilibrium. We provide a theoretical explanation for this surprising property of the Markov model and relate its behavior to allele diversity. PMID:16361244

  2. Multi-level bandwidth efficient block modulation codes

    NASA Technical Reports Server (NTRS)

    Lin, Shu

    1989-01-01

    The multilevel technique is investigated for combining block coding and modulation. There are four parts. In the first part, a formulation is presented for signal sets on which modulation codes are to be constructed. Distance measures on a signal set are defined and their properties are developed. In the second part, a general formulation is presented for multilevel modulation codes in terms of component codes with appropriate Euclidean distances. The distance properties, Euclidean weight distribution and linear structure of multilevel modulation codes are investigated. In the third part, several specific methods for constructing multilevel block modulation codes with interdependency among component codes are proposed. Given a multilevel block modulation code C with no interdependency among the binary component codes, the proposed methods give a multilevel block modulation code C which has the same rate as C, a minimum squared Euclidean distance not less than that of code C, a trellis diagram with the same number of states as that of C and a smaller number of nearest neighbor codewords than that of C. In the last part, error performance of block modulation codes is analyzed for an AWGN channel based on soft-decision maximum likelihood decoding. Error probabilities of some specific codes are evaluated based on their Euclidean weight distributions and simulation results.

  3. Tensil Film Clamps And Mounting Block For Viscoelastometers

    NASA Technical Reports Server (NTRS)

    Stoakley, Diane M.; St. Clair, Anne K.; Little, Bruce D.

    1989-01-01

    Set of clamps and mounting block developed for use in determining tensile moduli and damping properties of films in manually operated or automated commercial viscoelastometer. These clamps and block provide uniformity of sample gripping and alignment in instrument. Dependence on operator and variability of data greatly reduced.

  4. 18 CFR 367.1080 - Account 108, Accumulated provision for depreciation of service company property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... COMPANY ACT OF 2005, FEDERAL POWER ACT AND NATURAL GAS ACT Balance Sheet Chart of Accounts § 367.1080..., Accumulated provision for depreciation of service company property. 367.1080 Section 367.1080 Conservation of... THE PUBLIC UTILITY HOLDING COMPANY ACT OF 2005, FEDERAL POWER ACT AND NATURAL GAS ACT UNIFORM SYSTEM...

  5. Periodic nanostructures from self assembled wedge-type block-copolymers

    DOEpatents

    Xia, Yan; Sveinbjornsson, Benjamin R.; Grubbs, Robert H.; Weitekamp, Raymond; Miyake, Garret M.; Piunova, Victoria; Daeffler, Christopher Scot

    2015-06-02

    The invention provides a class of wedge-type block copolymers having a plurality of chemically different blocks, at least a portion of which incorporates a wedge group-containing block providing useful properties. For example, use of one or more wedge group-containing blocks in some block copolymers of the invention significantly inhibits chain entanglement and, thus, the present block copolymers materials provide a class of polymer materials capable of efficient molecular self-assembly to generate a range of structures, such as periodic nanostructures and microstructures. Materials of the present invention include copolymers having one or more wedge group-containing blocks, and optionally for some applications copolymers also incorporating one or more polymer side group-containing blocks. The present invention also provides useful methods of making and using wedge-type block copolymers.

  6. Property Accountability Task Force

    DTIC Science & Technology

    1978-06-30

    accountability. Many organizations have initiated innovative changes. I can as’,ure you that the pro, edures being put into effect will not be "auick...08184Z MAR 78 B. TRADOC MSG, DTG 031705Z APR 78, SAB 1. REF A REQUESTED THAT YOU PROVIDE DIRECTION TO ALL SERVICE SCHOOLS ON THE USE OF THE LOGISTICS...ABOVE. 3. REQUEST YOU INFORM DAPATF OF YOUR PLANS CONCERNING THE FOLLLOWING POINTS: A. ENSURING THAT ALL STUDENTS MASTER THE SUPPLY PROCEDURES

  7. 77 FR 20693 - Designation of Three Individuals Pursuant to Executive Order 13573 of May 18, 2011, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-05

    ... Pursuant to Executive Order 13573 of May 18, 2011, ``Blocking Property of Senior Officials of the... whose property and interests in property are blocked pursuant to Executive Order 13573 of May 18, 2011...-622-0077. Background On May 18, 2011, the President issued Executive Order 13573, ``Blocking Property...

  8. Thin film self-assembly of PVMS-b-PMMA block copolymer

    NASA Astrophysics Data System (ADS)

    Lwoya, Baraka; Uddin, Md; Chatterjee, Sourav; Albert, Julie

    Self-assembly of block copolymers has been explored for numerous years with a primary emphasis on nanolithographic templates and membrane applications. Block copolymers (BCPs) hold great promise as next-generation patterning materials for sub-10 nm nano-electronic applications. However, the inherent properties to develop smaller more ordered thin films ( 10-100 nm) is greatly hindered by the inability of the low segregation strength of conventional polymers such as poly(styrene-block-methylmethacrylate). We aim at addressing this issue by firstly synthesizing strongly segregating BCPs of poly(vinylmethylsiloxane-block-methyl methacrylate) (PVMS- b - PMMA) with different block volume fractions. Second, we induce self-assembly by either thermal or solvent annealing and characterize the morphology by atomic force microscopy (AFM). In addition, the use of a block with a pendant vinyl group provides the ability to functionalize the PVMS segment by thiol-ene reaction, either to further control of the segregation strength or to impart desirable surface chemical properties (e.g., adhesion/lift-off in templating or functionality in membranes). Gulf Research Program Early-Career Research Fellowship.

  9. A Comparison of Jump Height, Takeoff Velocities, and Blocking Coverage in the Swing and Traditional Volleyball Blocking Techniques

    PubMed Central

    Ficklin, Travis; Lund, Robin; Schipper, Megan

    2014-01-01

    The purpose of this study was to compare traditional and swing blocking techniques on center of mass (COM) projectile motion and effective blocking area in nine healthy Division I female volleyball players. Two high-definition (1080 p) video cameras (60 Hz) were used to collect two-dimensional variables from two separate views. One was placed perpendicular to the plane of the net and the other was directed along the top of the net, and were used to estimate COM locations and blocking area in a plane parallel to the net and hand penetration through the plane of the net respectively. Video of both the traditional and swing techniques were digitized and kinematic variables were calculated. Paired samples t-tests indicated that the swing technique resulted in greater (p < 0.05) vertical and horizontal takeoff velocities (vy and vx), jump height (H), duration of the block (tBLOCK), blocking coverage during the block (C) as well as hand penetration above and through the net’s plane (YPEN, ZPEN). The traditional technique had significantly greater approach time (tAPP). The results of this study suggest that the swing technique results in both greater jump height and effective blocking area. However, the shorter tAPP that occurs with swing is associated with longer times in the air during the block which may reduce the ability of the athlete to make adjustments to attacks designed to misdirect the defense. Key Points Swing blocking technique has greater jump height, effective blocking area, hand penetration, horizontal and vertical takeoff velocity, and has a shorter time of approach. Despite these advantages, there may be more potential for mistiming blocks and having erratic deflections of the ball after contact when using the swing technique. Coaches should take more than simple jump height and hand penetration into account when deciding which technique to employ. PMID:24570609

  10. A comparison of jump height, takeoff velocities, and blocking coverage in the swing and traditional volleyball blocking techniques.

    PubMed

    Ficklin, Travis; Lund, Robin; Schipper, Megan

    2014-01-01

    The purpose of this study was to compare traditional and swing blocking techniques on center of mass (COM) projectile motion and effective blocking area in nine healthy Division I female volleyball players. Two high-definition (1080 p) video cameras (60 Hz) were used to collect two-dimensional variables from two separate views. One was placed perpendicular to the plane of the net and the other was directed along the top of the net, and were used to estimate COM locations and blocking area in a plane parallel to the net and hand penetration through the plane of the net respectively. Video of both the traditional and swing techniques were digitized and kinematic variables were calculated. Paired samples t-tests indicated that the swing technique resulted in greater (p < 0.05) vertical and horizontal takeoff velocities (vy and vx), jump height (H), duration of the block (tBLOCK), blocking coverage during the block (C) as well as hand penetration above and through the net's plane (YPEN, ZPEN). The traditional technique had significantly greater approach time (tAPP). The results of this study suggest that the swing technique results in both greater jump height and effective blocking area. However, the shorter tAPP that occurs with swing is associated with longer times in the air during the block which may reduce the ability of the athlete to make adjustments to attacks designed to misdirect the defense. Key PointsSwing blocking technique has greater jump height, effective blocking area, hand penetration, horizontal and vertical takeoff velocity, and has a shorter time of approach.Despite these advantages, there may be more potential for mistiming blocks and having erratic deflections of the ball after contact when using the swing technique.Coaches should take more than simple jump height and hand penetration into account when deciding which technique to employ.

  11. Documentation and Analysis of the ’Miscellaneous’ Account Category within the DoD Instruction 7220.29-H Depot Level Maintenance Cost Accounting System.

    DTIC Science & Technology

    1984-12-01

    34MISCELLANEOUS" ACCOUNT CATEGORY WITHIN THE DOD INSTRUCTION 7220.29-H DEPOT LEVEL MAINTENANCE COST ACCOUNTING SYSTEM by a. Steven Eugene Lehr CDecember 1984...PERFORMING ONG. REPORT NUMBER Maintenance Cost Accounting System 7. AUTHOR(&) S. CONTRACT OR GRANT NUMBER(@) Steven Eugene Lehr 9. PERFORMING ORGANIZATION...Availability Codes IS. KEY WORDS (Continue on reverse *ids It necessary and Identify by block number) Dvi Special Uniform Cost Accounting System DoD

  12. Multi-scale analysis of the effect of nano-filler particle diameter on the physical properties of CAD/CAM composite resin blocks.

    PubMed

    Yamaguchi, Satoshi; Inoue, Sayuri; Sakai, Takahiko; Abe, Tomohiro; Kitagawa, Haruaki; Imazato, Satoshi

    2017-05-01

    The objective of this study was to assess the effect of silica nano-filler particle diameters in a computer-aided design/manufacturing (CAD/CAM) composite resin (CR) block on physical properties at the multi-scale in silico. CAD/CAM CR blocks were modeled, consisting of silica nano-filler particles (20, 40, 60, 80, and 100 nm) and matrix (Bis-GMA/TEGDMA), with filler volume contents of 55.161%. Calculation of Young's moduli and Poisson's ratios for the block at macro-scale were analyzed by homogenization. Macro-scale CAD/CAM CR blocks (3 × 3 × 3 mm) were modeled and compressive strengths were defined when the fracture loads exceeded 6075 N. MPS values of the nano-scale models were compared by localization analysis. As the filler size decreased, Young's moduli and compressive strength increased, while Poisson's ratios and MPS decreased. All parameters were significantly correlated with the diameters of the filler particles (Pearson's correlation test, r = -0.949, 0.943, -0.951, 0.976, p < 0.05). The in silico multi-scale model established in this study demonstrates that the Young's moduli, Poisson's ratios, and compressive strengths of CAD/CAM CR blocks can be enhanced by loading silica nanofiller particles of smaller diameter. CAD/CAM CR blocks by using smaller silica nano-filler particles have a potential to increase fracture resistance.

  13. 78 FR 49334 - Designation of 5 individual(s) and 2 entity(-ies) Pursuant to Executive Order 13581, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-13

    ... entity(-ies) Pursuant to Executive Order 13581, ``Blocking Property of Transnational Criminal... July 24, 2011, ``Blocking Property of Transnational Criminal Organizations.'' DATES: The designations... President issued Executive Order 13581, ``Blocking Property of Transnational Criminal Organizations'' (the...

  14. Property Accounting. A Handbook of Standard Terminology and a Guide for Classifying Information about Education Property. State Educational Records and Reports Series: Handbook III, Revised 1977.

    ERIC Educational Resources Information Center

    Seibert, Ivan N.

    This handbook is offered as a resource for local, intermediate, state, and federal education officials to assist in the identification, organization, and definition of data and information about education property. An introduction and directions are followed by a discussion of concepts associated with property accounting and some general…

  15. 25 CFR 900.58 - Do the same accountability and control procedures described above apply to Federal property?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... UNDER THE INDIAN SELF-DETERMINATION AND EDUCATION ASSISTANCE ACT Standards for Tribal or Tribal Organization Management Systems Property Management System Standards § 900.58 Do the same accountability and...

  16. 25 CFR 900.58 - Do the same accountability and control procedures described above apply to Federal property?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... UNDER THE INDIAN SELF-DETERMINATION AND EDUCATION ASSISTANCE ACT Standards for Tribal or Tribal Organization Management Systems Property Management System Standards § 900.58 Do the same accountability and...

  17. 25 CFR 900.58 - Do the same accountability and control procedures described above apply to Federal property?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... UNDER THE INDIAN SELF-DETERMINATION AND EDUCATION ASSISTANCE ACT Standards for Tribal or Tribal Organization Management Systems Property Management System Standards § 900.58 Do the same accountability and...

  18. 25 CFR 900.58 - Do the same accountability and control procedures described above apply to Federal property?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... UNDER THE INDIAN SELF-DETERMINATION AND EDUCATION ASSISTANCE ACT Standards for Tribal or Tribal Organization Management Systems Property Management System Standards § 900.58 Do the same accountability and...

  19. 25 CFR 900.58 - Do the same accountability and control procedures described above apply to Federal property?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... UNDER THE INDIAN SELF-DETERMINATION AND EDUCATION ASSISTANCE ACT Standards for Tribal or Tribal Organization Management Systems Property Management System Standards § 900.58 Do the same accountability and...

  20. Characteristics of Recycled Concrete Aggregates from Precast Slab Block Buildings

    NASA Astrophysics Data System (ADS)

    Venkrbec, Václav; Nováková, Iveta; Henková, Svatava

    2017-10-01

    Precast slab block buildings (PSBB) typically and frequently occur in Central and Eastern Europe, as well as elsewhere in the world. Some of these buildings are currently used beyond their service life capacity. The utilization of recycled materials from these buildings with regard to applying the principles of sustainable construction and using recycled materials will probably be significant in the following years. Documentation from the manufacturing processes of prefabricated blocks for precast slab block buildings is not available, and also it is difficult to declare technological discipline during the construction of these buildings. Therefore, properties of recycled concrete aggregates (RCA) produced from construction and demolition waste (C&DW) of precast slab block buildings build between 1950s to 1990s are not sufficiently known. The demolition of these buildings is very rare today, but it can be assumed an increase in demolitions of these buildings in the future. The use of RCA in new concrete requires verification/testing of the geometrical and physical properties of RCA according to the EN 12 620+A1 standard. The aim of the contribution is to present a case study of the demolition of slab block building with emphasis on RCA usage. The paper presents the results of the tests according to European standards for determining selected geometrical and physical properties of the RCA. The paper describes and evaluates tests such as determination of particle size distribution - Sieve Analysis, content of fine particles, determination of density and water absorption. The results of the properties testing of RCA are compared with the properties of natural aggregate. The general boundary conditions of RCA particular tests are presented.

  1. Poly(1-adamantyl acrylate): Living Anionic Polymerization, Block Copolymerization, and Thermal Properties

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Lu, Wei; Huang, Caili; Hong, Kunlun

    Living anionic polymerization of acrylates is challenging due to intrinsic side reactions including backbiting reactions of propagating enolate anions and aggregation of active chain ends. In this study, the controlled synthesis of poly(1-adamatyl acrylate) (PAdA) was performed successfully for the first time via living anionic polymerization through investigation of the initiation systems of sec-butyllithium/diphenylethylene/lithium chloride (sec-BuLi/DPE/LiCl), diphenylmethylpotassium/diethylzinc (DPMK/Et 2Zn), and sodium naphthalenide/dipenylethylene/diethylzinc (Na-Naph/DPE/Et2Zn) in tetrahydrofuran at -78 °C using custom glass-blowing and high-vacuum techniques. PAdA synthesized via anionic polymerization using DPMK with a large excess (more than 40-fold to DPMK) of Et 2Zn as the ligand exhibited predicted molecular weightsmore » from 4.3 to 71.8 kg/mol and polydispersity indices of around 1.10. In addition, the produced PAdAs exhibit a low level of isotactic content (mm triads of 2.1%). The block copolymers of AdA and methyl methacrylate (MMA) were obtained by sequential anionic polymerization, and the distinct living property of PAdA over other acrylates was demonstrated based on the observation that the resulting PAdA-b-PMMA block copolymers were formed with no residual PAdA homopolymer. The PAdA homopolymers exhibit a very high glass transition temperature (133 °C) and outstanding thermal stability (T d: 376 °C) as compared to other acrylic polymers such as poly(tert-butyl acrylate) and poly(methyl acrylate). These merits make PAdA a promising candidate for acrylic-based thermoplastic elastomers with high upper service temperature and enhanced mechanical strength.« less

  2. Poly(1-adamantyl acrylate): Living Anionic Polymerization, Block Copolymerization, and Thermal Properties

    DOE PAGES

    Lu, Wei; Huang, Caili; Hong, Kunlun; ...

    2016-12-06

    Living anionic polymerization of acrylates is challenging due to intrinsic side reactions including backbiting reactions of propagating enolate anions and aggregation of active chain ends. In this study, the controlled synthesis of poly(1-adamatyl acrylate) (PAdA) was performed successfully for the first time via living anionic polymerization through investigation of the initiation systems of sec-butyllithium/diphenylethylene/lithium chloride (sec-BuLi/DPE/LiCl), diphenylmethylpotassium/diethylzinc (DPMK/Et 2Zn), and sodium naphthalenide/dipenylethylene/diethylzinc (Na-Naph/DPE/Et2Zn) in tetrahydrofuran at -78 °C using custom glass-blowing and high-vacuum techniques. PAdA synthesized via anionic polymerization using DPMK with a large excess (more than 40-fold to DPMK) of Et 2Zn as the ligand exhibited predicted molecular weightsmore » from 4.3 to 71.8 kg/mol and polydispersity indices of around 1.10. In addition, the produced PAdAs exhibit a low level of isotactic content (mm triads of 2.1%). The block copolymers of AdA and methyl methacrylate (MMA) were obtained by sequential anionic polymerization, and the distinct living property of PAdA over other acrylates was demonstrated based on the observation that the resulting PAdA-b-PMMA block copolymers were formed with no residual PAdA homopolymer. The PAdA homopolymers exhibit a very high glass transition temperature (133 °C) and outstanding thermal stability (T d: 376 °C) as compared to other acrylic polymers such as poly(tert-butyl acrylate) and poly(methyl acrylate). These merits make PAdA a promising candidate for acrylic-based thermoplastic elastomers with high upper service temperature and enhanced mechanical strength.« less

  3. Amphiphilic block copolymer membrane for vanadium redox flow battery

    NASA Astrophysics Data System (ADS)

    Wang, Fei; Sylvia, James M.; Jacob, Monsy M.; Peramunage, Dharmasena

    2013-11-01

    An amphiphilic block copolymer comprised of hydrophobic polyaryletherketone (PAEK) and hydrophilic sulfonated polyaryletherketone (SPAEK) blocks has been synthesized and characterized. A membrane prepared from the block copolymer is used as the separator in a single cell vanadium redox flow battery (VRB). The proton conductivity, mechanical property, VO2+ permeability and single VRB cell performance of this block copolymer membrane are investigated and compared to Nafion™ 117. The block copolymer membrane showed significantly improved vanadium ion selectivity, higher mechanical strength and lower conductivity than Nafion™ 117. The VRB containing the block copolymer membrane exhibits higher coulombic efficiency and similar energy efficiency compared to a VRB using Nafion™ 117. The better vanadium ion selectivity of the block copolymer membrane has led to a much smaller capacity loss during 50 charge-discharge cycles for the VRB.

  4. Fundamental properties of local anesthetics: half-maximal blocking concentrations for tonic block of Na+ and K+ channels in peripheral nerve.

    PubMed

    Bräu, M E; Vogel, W; Hempelmann, G

    1998-10-01

    Local anesthetics suppress excitability by interfering with ion channel function. Ensheathment of peripheral nerve fibers, however, impedes diffusion of drugs to the ion channels and may influence the evaluation of local anesthetic potencies. Investigating ion channels in excised membrane patches avoids these diffusion barriers. We investigated the effect of local anesthetics with voltage-dependent Na+ and K+ channels in enzymatically dissociated sciatic nerve fibers of Xenopus laevis using the patch clamp method. The outside-out configuration was chosen to apply drugs to the external face of the membrane. Local anesthetics reversibly blocked the transient Na+ inward current, as well as the steady-state K+ outward current. Half-maximal tonic inhibiting concentrations (IC50), as obtained from concentration-effect curves for Na+ current block were: tetracaine 0.7 microM, etidocaine 18 microM, bupivacaine 27 microM, procaine 60 microM, mepivacaine 149 microM, and lidocaine 204 microM. The values for voltage-dependent K+ current block were: bupivacaine 92 microM, etidocaine 176 microM, tetracaine 946 microM, lidocaine 1118 microM, mepivacaine 2305 microM, and procaine 6302 microM. Correlation of potencies with octanol:buffer partition coefficients (logP0) revealed that ester-bound local anesthetics were more potent in blocking Na+ channels than amide drugs. Within these groups, lipophilicity governed local anesthetic potency. We conclude that local anesthetic action on peripheral nerve ion channels is mediated via lipophilic drug-channel interactions. Half-maximal blocking concentrations of commonly used local anesthetics for Na+ and K+ channel block were determined on small membrane patches of peripheral nerve fibers. Because drugs can directly diffuse to the ion channel in this model, these data result from direct interactions of the drugs with ion channels.

  5. Inverse design of bulk morphologies in block copolymers using particle swarm optimization

    NASA Astrophysics Data System (ADS)

    Khadilkar, Mihir; Delaney, Kris; Fredrickson, Glenn

    Multiblock polymers are a versatile platform for creating a large range of nanostructured materials with novel morphologies and properties. However, achieving desired structures or property combinations is difficult due to a vast design space comprised of parameters including monomer species, block sequence, block molecular weights and dispersity, copolymer architecture, and binary interaction parameters. Navigating through such vast design spaces to achieve an optimal formulation for a target structure or property set requires an efficient global optimization tool wrapped around a forward simulation technique such as self-consistent field theory (SCFT). We report on such an inverse design strategy utilizing particle swarm optimization (PSO) as the global optimizer and SCFT as the forward prediction engine. To avoid metastable states in forward prediction, we utilize pseudo-spectral variable cell SCFT initiated from a library of defect free seeds of known block copolymer morphologies. We demonstrate that our approach allows for robust identification of block copolymers and copolymer alloys that self-assemble into a targeted structure, optimizing parameters such as block fractions, blend fractions, and Flory chi parameters.

  6. 78 FR 6179 - Unblocking of One Specially Designated National and Blocked Person Pursuant to Executive Order 13448

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-29

    ... Nationals and Blocked Persons (``SDN List'') of the individual identified in this notice whose property and... SDN List the individual listed below, whose property and interests in property were blocked pursuant...

  7. Interactive-predictive detection of handwritten text blocks

    NASA Astrophysics Data System (ADS)

    Ramos Terrades, O.; Serrano, N.; Gordó, A.; Valveny, E.; Juan, A.

    2010-01-01

    A method for text block detection is introduced for old handwritten documents. The proposed method takes advantage of sequential book structure, taking into account layout information from pages previously transcribed. This glance at the past is used to predict the position of text blocks in the current page with the help of conventional layout analysis methods. The method is integrated into the GIDOC prototype: a first attempt to provide integrated support for interactive-predictive page layout analysis, text line detection and handwritten text transcription. Results are given in a transcription task on a 764-page Spanish manuscript from 1891.

  8. Effects of Block Length and Membrane Processing Conditions on the Morphology and Properties of Perfluorosulfonated Poly(arylene ether sulfone) Multiblock Copolymer Membranes for PEMFC.

    PubMed

    Assumma, Luca; Nguyen, Huu-Dat; Iojoiu, Cristina; Lyonnard, Sandrine; Mercier, Régis; Espuche, Eliane

    2015-07-01

    Perfluorosulfonated poly(arylene ether sulfone) multiblock copolymers have been shown to be promising as proton exchange membranes. The commonly used approach for preparation of the membrane is solvent casting; the properties of the resulting membranes are very dependent on the membrane processing conditions. In this paper, we study the effects of block length, selectivity of the solvent, and thermal treatment on the membrane properties such as morphology, water uptake, and ionic conductivity. DiMethylSulfOxide (DMSO), and DiMethylAcetamide (DMAc) were selected as casting solvents based on the Flory-Huggins parameter calculated by inversion gas chromatography (IGC). It was found that the solvent selectivity has a mild impact on the mean size of the ionic domains and the expansion upon swelling, while it dramatically affects the supramolecular ordering of the blocks. The membranes cast from DMSO exhibit more interconnected ionic clusters yielding higher conductivities and water uptake as compared to membranes cast from DMAc. A 10-fold increase in proton conductivity was achieved after thermal annealing of membranes at 150 °C, and the ionomers with longer block lengths show conductivities similar to Nafion at 80 °C and low relative humidity (30%).

  9. 31 CFR 547.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... THE CONGO SANCTIONS REGULATIONS Prohibitions § 547.201 Prohibited transactions involving blocked... the Democratic Republic of the Congo that impedes the disarmament, repatriation, or resettlement of... children in armed conflict in the Democratic Republic of the Congo in violation of applicable international...

  10. 31 CFR 547.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... THE CONGO SANCTIONS REGULATIONS Prohibitions § 547.201 Prohibited transactions involving blocked... the Democratic Republic of the Congo that impedes the disarmament, repatriation, or resettlement of... children in armed conflict in the Democratic Republic of the Congo in violation of applicable international...

  11. 31 CFR 547.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... THE CONGO SANCTIONS REGULATIONS Prohibitions § 547.201 Prohibited transactions involving blocked... the Democratic Republic of the Congo that impedes the disarmament, repatriation, or resettlement of... children in armed conflict in the Democratic Republic of the Congo in violation of applicable international...

  12. 31 CFR 547.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... THE CONGO SANCTIONS REGULATIONS Prohibitions § 547.201 Prohibited transactions involving blocked... the Democratic Republic of the Congo that impedes the disarmament, repatriation, or resettlement of... children in armed conflict in the Democratic Republic of the Congo in violation of applicable international...

  13. 31 CFR 547.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... THE CONGO SANCTIONS REGULATIONS Prohibitions § 547.201 Prohibited transactions involving blocked... the Democratic Republic of the Congo that impedes the disarmament, repatriation, or resettlement of... children in armed conflict in the Democratic Republic of the Congo in violation of applicable international...

  14. Blocked vs. interleaved presentation and proactive interference in episodic memory.

    PubMed

    Del Missier, Fabio; Sassano, Alessia; Coni, Valentina; Salomonsson, Martina; Mäntylä, Timo

    2018-05-01

    Although a number of theoretical accounts of proactive interference (PI) in episodic memory have been proposed, existing empirical evidence does not support conclusively a single view yet. In two experiments we tested the predictions of the temporal discrimination theory of PI against alternative accounts by manipulating the presentation schedule of study materials (lists blocked by category vs. interleaved). In line with the temporal discrimination theory, we observed a clear buildup of (and release from) PI in the blocked condition, in which all the lists of the same category were presented sequentially. In the interleaved condition, with alternating lists of different categories, a more gradual and smoother buildup of PI was observed. When participants were left free to choose their presentation schedule, they spontaneously adopted an interleaved schedule, resulting again in more gradual PI. After longer delays, we observed recency effects at the list level in overall recall and, in the blocked condition, PI-related effects. The overall pattern of findings agrees with the predictions of the temporal discrimination theory of PI, complemented with categorical processing of list items, but not with alternative accounts, shedding light on the dynamics and underpinnings of PI under diverse presentation schedules and over different time scales.

  15. Automatic blocking of nested loops

    NASA Technical Reports Server (NTRS)

    Schreiber, Robert; Dongarra, Jack J.

    1990-01-01

    Blocked algorithms have much better properties of data locality and therefore can be much more efficient than ordinary algorithms when a memory hierarchy is involved. On the other hand, they are very difficult to write and to tune for particular machines. The reorganization is considered of nested loops through the use of known program transformations in order to create blocked algorithms automatically. The program transformations used are strip mining, loop interchange, and a variant of loop skewing in which invertible linear transformations (with integer coordinates) of the loop indices are allowed. Some problems are solved concerning the optimal application of these transformations. It is shown, in a very general setting, how to choose a nearly optimal set of transformed indices. It is then shown, in one particular but rather frequently occurring situation, how to choose an optimal set of block sizes.

  16. Superalloy Lattice Block Developed for Use in Lightweight, High-Temperature Structures

    NASA Technical Reports Server (NTRS)

    Hebsur, Mohan G.; Whittenberger, J. Daniel; Krause, David L.

    2003-01-01

    Successful development of advanced gas turbine engines for aircraft will require lightweight, high-temperature components. Currently titanium-aluminum- (TiAl) based alloys are envisioned for such applications because of their lower density (4 g/cm3) in comparison to superalloys (8.5 g/cm3), which have been utilized for hot turbine engine parts for over 50 years. However, a recently developed concept (lattice block) by JAMCORP, Inc., of Willmington, Massachusetts, would allow lightweight, high-temperature structures to be directly fabricated from superalloys and, thus, take advantage of their well-known, characterized properties. In its simplest state, lattice block is composed of thin ligaments arranged in a three dimensional triangulated trusslike configuration that forms a structurally rigid panel. Because lattice block can be fabricated by casting, correctly sized hardware is produced with little or no machining; thus very low cost manufacturing is possible. Together, the NASA Glenn Research Center and JAMCORP have extended their lattice block methodology for lower melting materials, such as Al alloys, to demonstrate that investment casting of superalloy lattice block is possible. This effort required advances in lattice block pattern design and assembly, higher temperature mold materials and mold fabrication technology, and foundry practice suitable for superalloys (ref. 1). Lattice block panels have been cast from two different Ni-base superalloys: IN 718, which is the most commonly utilized superalloy and retains its strength up to 650 C; and MAR M247, which possesses excellent mechanical properties to at least 1100 C. In addition to the open-cell lattice block geometry, same-sized lattice block panels containing a thin (1-mm-thick) solid face on one side have also been cast from both superalloys. The elevated-temperature mechanical properties of the open cell and face-sheeted superalloy lattice block panels are currently being examined, and the

  17. Production of thermal insulation blocks from bottom ash of fluidized bed combustion system.

    PubMed

    Mandal, A K; Sinha, O P

    2017-08-01

    The issues of disposal and environmental problems are increased by the generation of bottom ash from the thermal power plants day by day; hence, its recycling is required. The present study aimed to make thermal insulation blocks using as raw material bottom ash and iron ore slime as a binder and to characterize their engineering properties. Two different fineness values of bottom ash were considered with varying amounts of iron ore slime (0-10%) to make the blocks. Blocks were dried followed by firing at 1000, 1100 and 1200°C, respectively. Cold crushing strength, density and thermal conductivity of these fired blocks showed increasing behaviour with firing temperature, fineness of bottom ash and iron ore slime content. In contrast, a reverse trend was observed in the case of porosity. With increasing firing temperature, the formation of lower melting phases like iron silicate followed by iron aluminium silicate was observed, which imparts the strength inside the blocks. The coarser particles of bottom ash increase the interparticle spaces, which enhances the apparent porosity, resulting in higher thermal insulation property in the blocks. Blocks having better thermal insulation property could be possible to make effectively from coarse bottom ash by adding iron ore slime as a binder.

  18. An Organolanthanide Building Block Approach to Single-Molecule Magnets.

    PubMed

    Harriman, Katie L M; Murugesu, Muralee

    2016-06-21

    and experimental chemistry allows us to shed light on the mechanisms and electronic properties that govern the slow relaxation dynamics inherent to this unique set of SMMs, thus providing insight into the role by which both symmetry and crystal field effects contribute to the magnetic properties. As we look to the future success of such materials in practical devices, we must gain an understanding of how the 4f elements communicate magnetically, a subject upon which there is still limited knowledge. As such, we have described our work on coupling mononuclear metallocenes to generate new dinuclear SMMs. Through a building block approach, we have been able to gain access to new double,- triple- and quadruple-decker complexes that possess remarkable properties; exhibiting TB of 12 K and Ueff above 300 K. Our goal is to develop a fundamental platform from which to study 4f coupling, while maintaining and enhancing the strict axiality of the anisotropy of the 4f ions. This Account will present a successful strategy employed in the production of novel and high-performing SMMs, as well as a clear overview of the lessons learned throughout.

  19. Synthesis and optoelectronic properties of nanocomposites comprising of poly(9,9-dioctylfluorene)-block-poly(3-hexylthiophene) block copolymer and graphene nanosheets.

    PubMed

    Chiu, Po-Chun; Su, Reagen Ying-Tai; Yeh, Je-Yuan; Yeh, Cheng-Yang; Tsiang, Raymond Chien-Chao

    2013-06-01

    A novel conjugated block copolymer, poly(9,9-dioctylfluorene)-block-poly(3-hexylthiophene) (PFBPT) and its nanocomposite containing graphene sheets were synthesized for enhancing optoelectronic performance. Graphene sheets were in-situ formed in the polymer matrix via a reduction of octadecylamine-functionalized graphite oxide, where the graphite oxide came from acidification and exfoliation of graphite. The blue-green light-emitting poly(9,9-dioctylfluorene) block and red-orange light-emitting poly(3-hexylthiophene) block exhibit a combined white electroluminescence when the composite materials were fabricated as the emitting layer of a polymeric light-emitting diode (PLED). Graphene does not alter the optical characteristics wavelength of PFBPT but electric conductivity increases with the amount of graphene. The HOMO and LUMO were measured and the band gap is smaller with existence of graphene. The threshold voltage decreases with an increase in the graphene content. The device fabricated with PFBPT/graphene nanocomposite containing 1% graphene has a maximum white-light luminescence at a voltage of 9.0 V.

  20. 48 CFR 45.106 - Transferring accountability.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Transferring accountability. 45.106 Section 45.106 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACT MANAGEMENT GOVERNMENT PROPERTY General 45.106 Transferring accountability. Government property...

  1. Good Asset Accounting Procedures for Schools.

    ERIC Educational Resources Information Center

    Golz, William C.

    1981-01-01

    Increased accountability is required in school accounting due to rising education costs and the significant investment made in property and equipment in educational facilities. Guidelines for planning and implementing a property record-keeping system are provided. (Author/MLF)

  2. 78 FR 31631 - Designation of Three (3) Individuals Pursuant to Executive Order 13573 of May 18, 2011, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-24

    ... Pursuant to Executive Order 13573 of May 18, 2011, ``Blocking Property of Senior Officials of the...) individuals whose property and interests in property are blocked pursuant to Executive Order 13573 of May 18..., Tel.: 202/622-0077. Background On May 18, 2011, the President issued Executive Order 13573, ``Blocking...

  3. 31 CFR 515.549 - Bank accounts and other property of non-Cuban citizens who were in Cuba on or after July 8, 1963.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... non-Cuban citizens who were in Cuba on or after July 8, 1963. 515.549 Section 515.549 Money and... Licensing Policy § 515.549 Bank accounts and other property of non-Cuban citizens who were in Cuba on or... accounts and other property of non-Cuban citizens who have left Cuba, provided that they submit evidence...

  4. 31 CFR 515.549 - Bank accounts and other property of non-Cuban citizens who were in Cuba on or after July 8, 1963.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... non-Cuban citizens who were in Cuba on or after July 8, 1963. 515.549 Section 515.549 Money and... Licensing Policy § 515.549 Bank accounts and other property of non-Cuban citizens who were in Cuba on or... accounts and other property of non-Cuban citizens who have left Cuba, provided that they submit evidence...

  5. 31 CFR 515.549 - Bank accounts and other property of non-Cuban citizens who were in Cuba on or after July 8, 1963.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... non-Cuban citizens who were in Cuba on or after July 8, 1963. 515.549 Section 515.549 Money and... Licensing Policy § 515.549 Bank accounts and other property of non-Cuban citizens who were in Cuba on or... accounts and other property of non-Cuban citizens who have left Cuba, provided that they submit evidence...

  6. 31 CFR 515.549 - Bank accounts and other property of non-Cuban citizens who were in Cuba on or after July 8, 1963.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... non-Cuban citizens who were in Cuba on or after July 8, 1963. 515.549 Section 515.549 Money and... Licensing Policy § 515.549 Bank accounts and other property of non-Cuban citizens who were in Cuba on or... accounts and other property of non-Cuban citizens who have left Cuba, provided that they submit evidence...

  7. 31 CFR 515.549 - Bank accounts and other property of non-Cuban citizens who were in Cuba on or after July 8, 1963.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... non-Cuban citizens who were in Cuba on or after July 8, 1963. 515.549 Section 515.549 Money and... Licensing Policy § 515.549 Bank accounts and other property of non-Cuban citizens who were in Cuba on or... accounts and other property of non-Cuban citizens who have left Cuba, provided that they submit evidence...

  8. 31 CFR 541.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[ZIMBABWE].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining...

  9. 31 CFR 541.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[ZIMBABWE].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining...

  10. 31 CFR 541.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[ZIMBABWE].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining...

  11. 31 CFR 541.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[ZIMBABWE].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining...

  12. Large Block Test Final Report

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Lin, W

    2001-12-01

    This report documents the Large-Block Test (LBT) conducted at Fran Ridge near Yucca Mountain, Nevada. The LBT was a thermal test conducted on an exposed block of middle non-lithophysal Topopah Spring tuff (Tptpmn) and was designed to assist in understanding the thermal-hydrological-mechanical-chemical (THMC) processes associated with heating and then cooling a partially saturated fractured rock mass. The LBT was unique in that it was a large (3 x 3 x 4.5 m) block with top and sides exposed. Because the block was exposed at the surface, boundary conditions on five of the six sides of the block were relatively wellmore » known and controlled, making this test both easier to model and easier to monitor. This report presents a detailed description of the test as well as analyses of the data and conclusions drawn from the test. The rock block that was tested during the LBT was exposed by excavation and removal of the surrounding rock. The block was characterized and instrumented, and the sides were sealed and insulated to inhibit moisture and heat loss. Temperature on the top of the block was also controlled. The block was heated for 13 months, during which time temperature, moisture distribution, and deformation were monitored. After the test was completed and the block cooled down, a series of boreholes were drilled, and one of the heater holes was over-cored to collect samples for post-test characterization of mineralogy and mechanical properties. Section 2 provides background on the test. Section 3 lists the test objectives and describes the block site, the site configuration, and measurements made during the test. Section 3 also presents a chronology of events associated with the LBT, characterization of the block, and the pre-heat analyses of the test. Section 4 describes the fracture network contained in the block. Section 5 describes the heating/cooling system used to control the temperature in the block and presents the thermal history of the block during the

  13. [Conduction block: a notion to let through].

    PubMed

    Fournier, E

    2012-12-01

    Historical study of electrodiagnosis indicates that nerve conduction block is an old notion, used as early as the second century by Galien and then early in the 19th by physiologists such as Müller and Mateucci. Although introduced into the field of human pathology by Mitchell in 1872, who used it to study nerve injuries, and then by Erb in 1874 to study radial palsy, the contribution of nerve conduction blocks to electrodiagnosis was not exploited until the 1980s. At that time, attempts to improve early diagnosis of Guillain-Barré syndrome showed that among the electrophysiological consequences of demyelination, conduction block was the most appropriate to account for the paralysis. At the same time, descriptions of neuropathies characterized by conduction blocks led to considering conduction block as a major electrophysiological sign. Why was it so difficult for this sign to be retained for electrodiagnosis? Since the notion is not always associated with anatomical lesions, it doesn't fit easily into anatomoclinical reasoning, but has to be thought of in functional terms. Understanding how an uninjured axon could fail to conduct action potentials leads to an examination of the intimate consequences of demyelinations and axonal dysfunctions. But some of the difficulty encountered in adding this new old sign to the armamentarium of electrophysiological diagnosis was related to the technical precautions required to individualize a block. Several pitfalls have to be avoided if a conduction block is to be afforded real diagnostic value. Similar precautions and discussions are also needed to establish an opposing sign, the "excitability block" or "inverse block". Copyright © 2012 Elsevier Masson SAS. All rights reserved.

  14. Modification of nanofibrillated cellulose using amphiphilic block-structured galactoglucomannans.

    PubMed

    Lozhechnikova, Alina; Dax, Daniel; Vartiainen, Jari; Willför, Stefan; Xu, Chunlin; Österberg, Monika

    2014-09-22

    Nanofibrillated cellulose (NFC) and hemicelluloses have shown to be highly promising renewable components both as barrier materials and in novel biocomposites. However, the hydrophilic nature of these materials restricts their use in some applications. In this work, the usability of modified O-acetyl galactoglucomannan (GGM) for modification of NFC surface properties was studied. Four GGM-block-structured, amphiphilic derivatives were synthesized using either fatty acids or polydimethylsiloxane as hydrophobic tails. The adsorption of these GGM derivatives was consecutively examined in aqueous solution using a quartz crystal microbalance with dissipation monitoring (QCM-D). It was found that the hydrophobic tails did not hinder adsorption of the GGM derivatives to cellulose, which was concluded to be due to the presence of the native GGM-block with high affinity to cellulose. The layer properties of the adsorbed block-co-polymers were discussed and evaluated. Self-standing NFC films were further prepared and coated with the GGM derivatives and the effect of the surface modification on wetting properties and oxygen permeability (OP) of the modified films was assessed. Copyright © 2014 Elsevier Ltd. All rights reserved.

  15. 31 CFR 544.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[NPWMD].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the...

  16. 31 CFR 544.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[NPWMD].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the...

  17. 31 CFR 544.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[NPWMD].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the...

  18. 31 CFR 544.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[NPWMD].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the...

  19. Phase Structure and Properties of a Biodegradable Block Copolymer Coalesced from It's Crystalline Inclusion Compound Formed with alpha-Cyclodextrin

    NASA Astrophysics Data System (ADS)

    Shuai, Xintao; Wei, Min; Probeni, Francis; Bullions, Todd A.; Shin, I. Daniel; Tonelli, Alan E.

    2002-03-01

    A well-defined biodegradable block copolymer of poly(epsilon caprolactone) (PCL) and poly(L-lactic acid) (PLLA) was synthesized and characterized and then included as a guest in an inclusion compound (IC) formed with the host alpha-cyclodextrin (CD). The PCL-b-PLLA block copolymer was subsequently coalesced from it's CD-IC crystals by either treatment with hot water (50 C) or an aqueous amylase solution at 25 C. The coalesced PCL-b-PLLA was examined by FTIR, DSC, TGA, and WAXD and was found to be much more homogeneosly organized, with much less segregation and crystallinity of the PCL and PLLA microphases. The morpholgy, crystallization kinetics, thermal behavior, and biodegradability of the coalesced PCL-b-PLLA block copolymer was studied by comparison to similar observations made on as-synthesized PCL-b-PLLA, PCL and PLLA homopolymers, and their solution-cast blend. The PCL and PLLA blocks are found to be more intimately mixed, with less phase segregation, in the coalesced diblock copolymer, and this leads to homogeneous bulk crystallization, which is not observed for the as-synthesized diblock copolymer. The coalesced PCL-b-PLLA was also found to be more quickly biodegraded (lipase from Rhizopus arrhizus)than the as-synthesized PCL-b-PLLA or the physical blend of PCL and PLLA homopolymers. Overall, the coalescence of the inherently phase segregated diblock copolymer PCL-b-PLLA results in a small amount of compact, chain-extended PCL and PLLA crystals embedded in an amorphous phase, largely consisting of well-mixed PCL and PLLA blocks. Thus, we have demonstrated that it is possible to control the morpholgy of a biodegradable diblock copolymer, thereby significantly modifying it's properties, by coalescence from it's CD-IC crystals.

  20. 31 CFR 546.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[DARFUR].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found...

  1. 31 CFR 548.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[BELARUS].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be...

  2. 31 CFR 593.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[LIBERIA].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix...

  3. 31 CFR 548.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[BELARUS].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be...

  4. 31 CFR 593.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[LIBERIA].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix...

  5. 31 CFR 546.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[DARFUR].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found...

  6. 31 CFR 593.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[LIBERIA].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix...

  7. 31 CFR 593.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[LIBERIA].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix...

  8. 31 CFR 546.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[DARFUR].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found...

  9. 31 CFR 548.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[BELARUS].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be...

  10. 31 CFR 546.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[DARFUR].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found...

  11. 31 CFR 548.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[BELARUS].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be...

  12. Characterizing permanent magnet blocks with Helmholtz coils

    NASA Astrophysics Data System (ADS)

    Carnegie, D. W.; Timpf, J.

    1992-08-01

    Most of the insertion devices to be installed at the Advanced Photon Source will utilize permanent magnets in their magnetic structures. The quality of the spectral output is sensitive to the errors in the field of the device which are related to variations in the magnetic properties of the individual blocks. The Advanced Photon Source will have a measurement facility to map the field in the completed insertion devices and equipment to test and modify the magnetic strength of the individual magnet blocks. One component of the facility, the Helmholtz coil permanent magnet block measurement system, has been assembled and tested. This system measures the total magnetic moment vector of a block with a precision better than 0.01% and a directional resolution of about 0.05°. The design and performance of the system will be presented.

  13. Multi-block sulfonated poly(phenylene) copolymer proton exchange membranes

    DOEpatents

    Fujimoto, Cy H [Albuquerque, NM; Hibbs, Michael [Albuquerque, NM; Ambrosini, Andrea [Albuquerque, NM

    2012-02-07

    Improved multi-block sulfonated poly(phenylene) copolymer compositions, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cells, in electrode casting solutions and electrodes. The multi-block architecture has defined, controllable hydrophobic and hydrophilic segments. These improved membranes have better ion transport (proton conductivity) and water swelling properties.

  14. 31 CFR 576.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Blocked Persons List (“SDN List”) with the identifier “[IRAQ2]” (for persons designated pursuant to...)(3) of this section). The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List...

  15. 31 CFR 576.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Blocked Persons List (“SDN List”) with the identifier “[IRAQ2]” (for persons designated pursuant to...)(3) of this section). The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List...

  16. 31 CFR 576.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Blocked Persons List (“SDN List”) with the identifier “[IRAQ2]” (for persons designated pursuant to...)(3) of this section). The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List...

  17. 31 CFR 576.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Blocked Persons List (“SDN List”) with the identifier “[IRAQ2]” (for persons designated pursuant to...)(3) of this section). The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List...

  18. Single molecule magnets from magnetic building blocks

    NASA Astrophysics Data System (ADS)

    Kroener, W.; Paretzki, A.; Cervetti, C.; Hohloch, S.; Rauschenbach, S.; Kern, K.; Dressel, M.; Bogani, L.; M&üLler, P.

    2013-03-01

    We provide a basic set of magnetic building blocks that can be rationally assembled, similar to magnetic LEGO bricks, in order to create a huge variety of magnetic behavior. Using rare-earth centers and multipyridine ligands, fine-tuning of intra and intermolecular exchange interaction is demonstrated. We have investigated a series of molecules with monomeric, dimeric and trimeric lanthanide centers using SQUID susceptometry and Hall bar magnetometry. A home-made micro-Hall-probe magnetometer was used to measure magnetic hysteresis loops at mK temperatures and fields up to 17 T. All compounds show hysteresis below blocking temperatures of 3 to 4 K. The correlation of the assembly of the building blocks with the magnetic properties will be discussed.

  19. 31 CFR 548.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... and Blocked Persons List (“SDN” list) (which is accessible via the Office of Foreign Assets Control's... the identifier “[BELARUS].” See § 548.411 concerning entities that may not be listed on the SDN list... also are published on the SDN list, published in the Federal Register, and incorporated into Appendix A...

  20. 31 CFR 543.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[COTED].” The SDN...://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. See § 543.411 concerning entities that may not be listed on the SDN List but whose...

  1. 31 CFR 543.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[COTED].” The SDN...://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. See § 543.411 concerning entities that may not be listed on the SDN List but whose...

  2. 31 CFR 544.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Designated Nationals and Blocked Persons List (“SDN” list) (which is accessible via the Office of Foreign... chapter with the identifier “[NPWMD].” See § 544.411 concerning entities that may not be listed on the SDN... pending investigation pursuant to this part also are published on the SDN list, published in the Federal...

  3. 31 CFR 543.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[COTED].” The SDN...://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. See § 543.411 concerning entities that may not be listed on the SDN List but whose...

  4. 31 CFR 543.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[COTED].” The SDN...://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. See § 543.411 concerning entities that may not be listed on the SDN List but whose...

  5. Characterization of a Poly(styrene-block-methylacrylate-random-octadecylacrylate-block-styrene) Shape Memory ABA Triblock Copolymer

    NASA Astrophysics Data System (ADS)

    Fei, Pengzhan; Cavicchi, Kevin

    2011-03-01

    A new ABA triblock copolymer of poly(styrene-block- methylacrylate-random-octadecylacrylate-block-styrene) (PS-b- PMA-r-PODA-b-PS) was synthesized by reversible addition fragmentation chain transfer polymerization. The triblock copolymer can generate a three-dimensional, physically crosslinked network by self-assembly, where the glassy PS domains physically crosslink the midblock chains. The side chain crystallization of the polyoctadecylacrylare (PODA) side chain generates a second reversible network enabling shape memory properties. Shape memory tests by uniaxial deformation and recovery of molded dog-bone shape samples demonstrate that shape fixities above 96% and shape recoveries above 98% were obtained for extensional strains up to 300%. An outstanding advantage of this shape memory material is that it can be very easily shaped and remolded by elevating the temperature to 140circ; C, and after remolding the initial shape memory properties are totally recovered by eliminating the defects introduced by the previous deformation cycling.

  6. Surface-compositional Properties of Lava Plains in Syria-Thaumasia Block, Mars

    NASA Astrophysics Data System (ADS)

    Huang, J.; Xiao, L.; Kraft, M. D.; Christensen, P. R.; Edwards, C. S.; Ruff, S. W.; Dohm, J.

    2012-12-01

    Mars has a long and complex volcanic history (Greeley and Spudis, 1981; Carr, 2006). Among abundant plain-style volcanism and various edifices, Tharsis bulge is a prominent and long-lasting (Werner, 2009) volcanic province. However, there is little report about compositional variations before and after Tharsis uplift. The Syria- Thaumasia block (STB) is a complex tectono-volcanic province related to the Tharsis bulge. Understanding its formation is critical to characterizing the early history and planetary evolution of Mars. The STB lies at the southern edge of Tharsis bulge. It consists of lava plains (Syria, Solis, Sinai and Thaumasia Plana) bounded by an arcuate region of higher topography (Thaumasia Highlands, Melas Dorsa and Coprates Rise) and Valles Marineris to the north. Previous work on surface thermophysical properties (Christensen, 1988; Jakosky et al., 2000; Putzig and Mellon, 2007) and visible/near infrared and thermal infrared remote sensing spectroscopic compositional analysis (Bandfield, 2000; Bibring et al., 2006; Rogers and Christensen, 2007) had been done only in a global scale, but regional study of both surface thermophysical properties and compositions for each of the distinct lava plains in STB is lacking. In this study, we characterize a variety of volcanic features, including lava tubes, channels and their relationships with wrinkle ridges within lava plains using THEMIS infrared data (100 m/pixel: Christensen et al., 2004), CTX data (6 m/pixel: Malin et al., 2007) and HiRISE data (25 cm/pixel: McEwen et al., 2007). We assessed the surface thermophysical properties and compositions of lava plains using TES data (Christensen et al., 2001). The geomorphic features imply the lava emplacement mechanisms, while their relationships indicate the chronologic relationships between Tharsis uplift and lava emplacement. The compositional results show variations within the lava plains (Table 1), while the thermophysical results show the compositional

  7. 31 CFR 594.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Nationals and Blocked Persons List (“SDN List”) with the identifier “[SDGT].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. Note 3 to...

  8. 31 CFR 594.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Nationals and Blocked Persons List (“SDN List”) with the identifier “[SDGT].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. See § 594.412...

  9. 31 CFR 560.211 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Blocked Persons List (“SDN List”) with the identifier “[IRAN].” The SDN List is accessible through the following page on the Office of Foreign Control's Web site: www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. See § 560.425 concerning entities that...

  10. 31 CFR 594.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Nationals and Blocked Persons List (“SDN List”) with the identifier “[SDGT].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. See § 594.412...

  11. 31 CFR 560.211 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Blocked Persons List (“SDN List”) with the identifier “[IRAN].” The SDN List is accessible through the following page on the Office of Foreign Control's Web site: www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. See § 560.425 concerning entities that...

  12. 31 CFR 594.201 - Prohibited transactions involving blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Nationals and Blocked Persons List (“SDN List”) with the identifier “[SDGT].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the SDN List can be found in appendix A to this chapter. Note 3 to...

  13. Formation and Characterization of Anisotropic Block Copolymer Gels

    NASA Astrophysics Data System (ADS)

    Liaw, Chya Yan; Joester, Derk; Burghardt, Wesley; Shull, Kenneth

    2012-02-01

    Cylindrical micelles formed from block copolymer solutions closely mimic biological fibers that are presumed to guide mineral formation during biosynthesis of hard tissues like bone. The goal of our work is to use acrylic block copolymers as oriented templates for studying mineral formation reactions in model systems where the structure of the underlying template is well characterized and reproducible. Self-consistent mean field theory is first applied to investigate the thermodynamically stable micellar morphologies as a function of temperature and block copolymer composition. Small-angle x-ray scattering, optical birefringence and shear rheometry are used to study the morphology development during thermal processing. Initial experiments are based on a thermally-reversible alcohol-soluble system that can be converted to an aqueous gel by hydrolysis of a poly(t-butyl methacrylate) block to a poly(methacrylic acid) block. Aligned cylindrical domains are formed in the alcohol-based system when shear is applied in an appropriate temperature regime, which is below the critical micelle temperature but above the temperature at which the relaxation time of the gels becomes too large. Processing strategies for producing the desired cylindrical morphologies are being developed that account for both thermodynamic and kinetic effects.

  14. Alternating block polyurethanes based on PCL and PEG as potential nerve regeneration materials.

    PubMed

    Li, Guangyao; Li, Dandan; Niu, Yuqing; He, Tao; Chen, Kevin C; Xu, Kaitian

    2014-03-01

    Polyurethanes with regular and controlled block arrangement, i.e., alternating block polyurethanes (abbreviated as PUCL-alt-PEG) based on poly(ε-caprolactone) (PCL-diol) and poly(ethylene glycol) (PEG) was prepared via selectively coupling reaction between PCL-diol and diisocyanate end-capped PEG. Chemical structure, molecular weight, distribution, and thermal properties were systematically characterized by FTIR, (1)H NMR, GPC, DSC, and TGA. Hydrophilicity was studied by static contact angle of H2O and CH2I2. Film surface was observed by scanning electron microscope (SEM) and atomic force microscopy, and mechanical properties were assessed by universal test machine. Results show that alternating block polyurethanes give higher crystal degree, higher mechanical properties, and more hydrophilic and rougher (deep ravine) surface than their random counterpart, due to regular and controlled structure. Platelet adhesion illustrated that PUCL-alt-PEG has better hemocompatibility and the hemacompatibility was affected significantly by PEG content. Excellent hemocompatibility was obtained with high PEG content. CCK-8 assay and SEM observation revealed much better cell compatibility of fibroblast L929 and rat glial cells on the alternating block polyurethanes than that on random counterpart. Alternating block polyurethane PUC20-a-E4 with optimized composition, mechanical, surface properties, hemacompatibility, and highest cell growth and proliferation was achieved for potential use in nerve regeneration. Copyright © 2013 Wiley Periodicals, Inc.

  15. 32 CFR Appendix A to Part 504 - Request For Basic Identifying Account Data-Sample Format

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ..., you are requested to provide the following account information: (name, address, account number, and... complied with as to this request for account information. (Official Signature Block) ___ Under section 3417... 32 National Defense 3 2010-07-01 2010-07-01 true Request For Basic Identifying Account Data-Sample...

  16. Atmospheric Blocking and Atlantic Multi-Decadal Ocean Variability

    NASA Technical Reports Server (NTRS)

    Haekkinen, Sirpa; Rhines, Peter B.; Worthlen, Denise L.

    2011-01-01

    Based on the 20th century atmospheric reanalysis, winters with more frequent blocking, in a band of blocked latitudes from Greenland to Western Europe, are found to persist over several decades and correspond to a warm North Atlantic Ocean, in-phase with Atlantic multi-decadal ocean variability. Atmospheric blocking over the northern North Atlantic, which involves isolation of large regions of air from the westerly circulation for 5 days or more, influences fundamentally the ocean circulation and upper ocean properties by impacting wind patterns. Winters with clusters of more frequent blocking between Greenland and western Europe correspond to a warmer, more saline subpolar ocean. The correspondence between blocked westerly winds and warm ocean holds in recent decadal episodes (especially, 1996-2010). It also describes much longer-timescale Atlantic multidecadal ocean variability (AMV), including the extreme, pre-greenhouse-gas, northern warming of the 1930s-1960s. The space-time structure of the wind forcing associated with a blocked regime leads to weaker ocean gyres and weaker heat-exchange, both of which contribute to the warm phase of AMV.

  17. Rheological Design of Sustainable Block Copolymers

    NASA Astrophysics Data System (ADS)

    Mannion, Alexander M.

    Block copolymers are extremely versatile materials that microphase separate to give rise to a rich array of complex behavior, making them the ideal platform for the development of rheologically sophisticated soft matter. In line with growing environmental concerns of conventional plastics from petroleum feedstocks, this work focuses on the rheological design of sustainable block copolymers--those derived from renewable sources and are degradable--based on poly(lactide). Although commercially viable, poly(lactide) has a number of inherent deficiencies that result in a host of challenges that require both creative and practical solutions that are cost-effective and amenable to large-scale production. Specifically, this dissertation looks at applications in which both shear and extensional rheology dictate performance attributes, namely chewing gum, pressure-sensitive adhesives, and polymers for blown film extrusion. Structure-property relationships in the context of block polymer architecture, polymer composition, morphology, and branching are explored in depth. The basic principles and fundamental findings presented in this thesis are applicable to a broader range of substances that incorporate block copolymers for which rheology plays a pivotal role.

  18. Quantum integrable systems from conformal blocks

    NASA Astrophysics Data System (ADS)

    Chen, Heng-Yu; Qualls, Joshua D.

    2017-05-01

    In this note, we extend the striking connections between quantum integrable systems and conformal blocks recently found in [M. Isachenkov and V. Schomerus, Phys. Rev. Lett. 117, 071602 (2016), 10.1103/PhysRevLett.117.071602] in several directions. First, we explicitly demonstrate that the action of the quartic conformal Casimir operator on general d-dimensional scalar conformal blocks can be expressed in terms of certain combinations of commuting integrals of motions of the two particle hyperbolic BC2 Calogero-Sutherland system. The permutation and reflection properties of the underlying Dunkl operators play crucial roles in establishing such a connection. Next, we show that the scalar superconformal blocks in superconformal field theories (SCFTs) with four and eight supercharges and suitable chirality constraints can also be identified with the eigenfunctions of the same Calogero-Sutherland system; this demonstrates the universality of such a connection. Finally, we observe that the so-called "seed" conformal blocks for constructing four point functions for operators with arbitrary space-time spins in four-dimensional CFTs can also be linearly expanded in terms of Calogero-Sutherland eigenfunctions.

  19. An inhomogeneous thermal block model of man for the electromagnetic environment

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Chatterjee, I.; Gandhi, O.P.

    An inhomogeneous four layer block thermal model of a human body, composed of 476 electromagnetic-sensitive cubical cells has been developed to study the effects of electromagnetic radiation. Varying tissue properties defined by thermal conductivity, specific heat, blood flow rate and metabolic heat production are accounted for by equations. Peripheral cell temperature is weight-averaged for total cell volume and is thereby higher than actual skin temperature. During electromagnetic field exposure, additional factors considered are increased blood flow rate caused by vasodilation and sweat-induced heat loss. Hot spots have been located in the model and numerical results are presented. Subjected to planemore » wave iradiation, the model's sweating and insensible perspiration cease and all temperatures converge. Testing during electromagnetic hyperthemia shows all temperature body parts to increase approximately at the same rate.« less

  20. Understanding the Effect of the Dianhydride Structure on the Properties of Semiaromatic Polyimides Containing a Biobased Fatty Diamine

    PubMed Central

    2017-01-01

    In this work we report the effect of the hard block dianhydride structure on the overall properties of partially biobased semiaromatic polyimides. For the study, four polyimides were synthesized using aliphatic fatty dimer diamine (DD1) as the soft block and four different commercially available aromatic dianhydrides as the hard block: 4,4′-(4,4′-isopropylidenediphenoxy) bis(phthalic anhydride) (BPADA), 4,4′-oxidiphthalic anhydride (ODPA), 4,4′-(Hexafluoroisopropylidene) diphthalic anhydride (6FDA), and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA). The polymers synthesized were fully organo-soluble thermoplastic branched polyimides with glass transition temperatures close to room temperature. The detailed analysis took into account several aspects of the dianhydrides structure (planarity, rigidity, bridging group between the phtalimides, and electronic properties) and related them to the results obtained by differential scanning calorimetry, rheology, fluorescence and broadband dielectric spectroscopy. Moreover, the effects of physical parameters (crystallization and electronic interactions) on the relaxation behavior are discussed. Despite the presence of the bulky branched soft block given by the dimer diamine, all polyimides showed intermolecular charge transfer complexes, whose extent depends on the electronic properties of the dianhydride hard block. Furthermore, the results showed that polyimides containing flexible and bulky hard blocks turned out fully amorphous while the more rigid dianhydride (BPDA) led to a nanophase separated morphology with low degree of crystallinity resulting in constrained segmental relaxation with high effect on its mechanical response with the annealing time. This work represents the first detailed report on the development and characterization of polyimides based on a biobased fatty dimer diamine. The results highlight the potential of polymer property design by controlled engineering of the aromatic

  1. Government Furnished Property: Management and Accounting.

    DTIC Science & Technology

    1986-06-01

    PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER ORGANIZATION I(if applicable) %J 8c ADDRESS (City. State, anid ZIP Code) 10 SOURCE OF FUNDING NUMBERS e...DAR), Armed Services Procurement Regulation (ASPR), GAO aid service comptroller guidelines, and contract administration procedures. D. SCOPE OF STUDY...Contractor-acquired property is property procured or otherwise provided by the contractor for the performance of a . contract, title to which is vested in

  2. Nanocomposites based on self-assembly poly(hydroxypropyl methacrylate)-block-poly(N-phenylmaleimide) and Fe3O4-NPs. Thermal stability, morphological characterization and optical properties

    NASA Astrophysics Data System (ADS)

    Pizarro, Guadalupe del C.; Marambio, Oscar G.; Jeria-Orell, Manuel; Sánchez, Julio; Oyarzún, Diego P.

    2018-02-01

    The current work presents the synthesis, characterization and preparation of organic-inorganic hybrid polymer films that contain inorganic magnetic nanoparticles (NPs). The block copolymer, prepared by Atom-Transfer Radical Polymerization (ATRP), was used as a nanoreactor for iron oxide NPs. The NPs were embedded in poly(hydroxypropyl methacrylate)-block-poly(N-phenylmaleimide) matrix. The following topographical modifications of the surface of the film were specially analyzed: control of pore features and changes in surface roughness. Finally, the NPs functionality inside the polymer matrix and how it may affect the thermal and optical properties of the films were assessed.

  3. Emulsion Solvent Evaporation-Induced Self-Assembly of Block Copolymers Containing pH-Sensitive Block.

    PubMed

    Wu, Yuqing; Wang, Ke; Tan, Haiying; Xu, Jiangping; Zhu, Jintao

    2017-09-26

    A simple yet efficient method is developed to manipulate the self-assembly of pH-sensitive block copolymers (BCPs) confined in emulsion droplets. Addition of acid induces significant variation in morphological transition (e.g., structure and surface composition changes) of the polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) assemblies, due to the hydrophobic-hydrophilic transition of the pH-sensitive P4VP block via protonation. In the case of pH > pKa (P4VP) (pKa (P4VP) = 4.8), the BCPs can self-assemble into pupa-like particles because of the nearly neutral wetting of PS and P4VP blocks at the oil/water interface. As expected, onion-like particles obtained when pH is slightly lower than pKa (P4VP) (e.g., pH = 3.00), due to the interfacial affinity to the weakly hydrophilic P4VP block. Interestingly, when pH was further decreased to ∼2.5, interfacial instability of the emulsion droplets was observed, and each emulsion droplet generated nanoscale assemblies including vesicles, worm-like and/or spherical micelles rather than a nanostructured microparticle. Furthermore, homopolymer with different molecular weights and addition ratio are employed to adjust the interactions among copolymer blocks. By this means, particles with hierarchical structures can be obtained. Moreover, owing to the kinetically controlled processing, we found that temperature and stirring speed, which can significantly affect the kinetics of the evaporation of organic solvent and the formation of particles, played a key role in the morphology of the assemblies. We believe that manipulation of the property for the aqueous phase is a promising strategy to rationally design and fabricate polymeric assemblies with desirable shapes and internal structures.

  4. Financial Accounting Concepts and DoN/DoD Financial Reporting Practice

    DTIC Science & Technology

    1993-03-01

    continue on reverse if necessary and identify by block number) FIELD GROUP SUBGROUP Financial accounting/reporting concepts. Depreciation , Inventory... DEPRECIATION ................ ................. 7 1. DEFINITION ............... ................ 7 2. CONTEXT ................. .................. 7 3...include; 1. Financial Reporting 2. Ratio Analysis for a Ships Store 3. Timing ° •sues 2 4. Inventory Accounting and Standard Pricing 5. Depreciation 6. Pro

  5. Influence of Nanostructure on the Exciton Dynamics of Multichromophore Donor–Acceptor Block Copolymers

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Xia, Jianlong; Busby, Erik; Sanders, Samuel N.

    Here, we explore the synthesis and photophysics of nanostructured block copolymers that mimic light-harvesting complexes. We find that the combination of a polar and electron-rich boron dipyrromethene (BODIPY) block with a nonpolar electron-poor perylene diimide (PDI) block yields a polymer that self-assembles into ordered “nanoworms”. Numerical simulations are used to determine optimal compositions to achieve robust self-assembly. Photoluminescence spectroscopy is used to probe the rich exciton dynamics in these systems. Using controls, such as homopolymers and random copolymers, we analyze the mechanisms of the photoluminescence from these polymers. With this understanding it allows us to probe in detail the photophysicsmore » of the block copolymers, including the effects of their self-assembly into nanostructures on their excited-state properties. Similar to natural systems, ordered nanostructures result in properties that are starkly different than the properties of free polymers in solution, such as enhanced rates of electronic energy transfer and elimination of excitonic emission from disordered PDI trap states.« less

  6. Influence of Nanostructure on the Exciton Dynamics of Multichromophore Donor–Acceptor Block Copolymers

    DOE PAGES

    Xia, Jianlong; Busby, Erik; Sanders, Samuel N.; ...

    2017-03-27

    Here, we explore the synthesis and photophysics of nanostructured block copolymers that mimic light-harvesting complexes. We find that the combination of a polar and electron-rich boron dipyrromethene (BODIPY) block with a nonpolar electron-poor perylene diimide (PDI) block yields a polymer that self-assembles into ordered “nanoworms”. Numerical simulations are used to determine optimal compositions to achieve robust self-assembly. Photoluminescence spectroscopy is used to probe the rich exciton dynamics in these systems. Using controls, such as homopolymers and random copolymers, we analyze the mechanisms of the photoluminescence from these polymers. With this understanding it allows us to probe in detail the photophysicsmore » of the block copolymers, including the effects of their self-assembly into nanostructures on their excited-state properties. Similar to natural systems, ordered nanostructures result in properties that are starkly different than the properties of free polymers in solution, such as enhanced rates of electronic energy transfer and elimination of excitonic emission from disordered PDI trap states.« less

  7. Dual-mode MOS SOI nanoscale transistor serving as a building block for optical communication between blocks

    NASA Astrophysics Data System (ADS)

    Bendayan, Michael; Sabo, Roi; Zolberg, Roee; Mandelbaum, Yaakov; Chelly, Avraham; Karsenty, Avi

    2017-02-01

    We developed a new type of silicon MOSFET Quantum Well transistor, coupling both electronic and optical properties which should overcome the indirect silicon bandgap constraint, and serve as a future light emitting device in the range 0.8-2μm, as part of a new building block in integrated circuits allowing ultra-high speed processors. Such Quantum Well structure enables discrete energy levels for light recombination. Model and simulations of both optical and electric properties are presented pointing out the influence of the channel thickness and the drain voltage on the optical emission spectrum.

  8. Incorporating engine health monitoring capability into the SSME Block II controller

    NASA Astrophysics Data System (ADS)

    Clarke, James W.; Copa, Roderick J.

    An account is given of the architecture of the SSME's Block II controller's architecture, its incorporation of smart input electronics (SIE), and the potential benefits of this technology in SSME health-monitoring capabilities. SIE allows the Block II controller to conduct its control functions while simultaneously furnishing the computational capabilities and sensor input interface for any newly defined health-monitoring functions. It is expected that the SIE technology may be directly transferred to any follow-on engine design.

  9. North-South contraction of the mojave block and strike-slip tectonics in southern california.

    PubMed

    Bartley, J M; Glazner, A F; Schermer, E R

    1990-06-15

    The Mojave block of southern California has undergone significant late Cenozoic north-south contraction. This previously unappreciated deformation may account for part of the discrepancy between neotectonic and plate-tectonic estimates of Pacific-North American plate motion, and for part of the Big Bend in the San Andreas fault. In the eastern Mojave block, contraction is superimposed on early Miocene crustal extension. In the western Mojave block, contractional folds and reverse faults have been mistaken for extensional structures. The three-dimensional complexity of the contractional structures may mean that rigid-block tectonic models of the region based primarily on paleomagnetic data are unreliable.

  10. 46 CFR 232.4 - Balance sheet accounts.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... categories may include design and inspection costs; and for ODS categories may include wages, maintenance and... Financial Accounting Standards Board. (9) 330Property and Equipment. (i) This account shall include the cost... and all other associated cost necessary to place the respective property and equipment in acceptable...

  11. 46 CFR 232.4 - Balance sheet accounts.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... categories may include design and inspection costs; and for ODS categories may include wages, maintenance and... Financial Accounting Standards Board. (9) 330Property and Equipment. (i) This account shall include the cost... and all other associated cost necessary to place the respective property and equipment in acceptable...

  12. 46 CFR 232.4 - Balance sheet accounts.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... categories may include design and inspection costs; and for ODS categories may include wages, maintenance and... Financial Accounting Standards Board. (9) 330Property and Equipment. (i) This account shall include the cost... and all other associated cost necessary to place the respective property and equipment in acceptable...

  13. Estimation of the return period of rockfall blocks according to their size

    NASA Astrophysics Data System (ADS)

    De Biagi, Valerio; Lia Napoli, Maria; Barbero, Monica; Peila, Daniele

    2017-01-01

    With reference to the rockfall risk estimation and the planning of rockfall protection devices, one of the most critical and most discussed problems is the correct definition of the design block by taking into account its return period. In this paper, a methodology for the assessment of the design block linked with its return time is proposed and discussed, following a statistical approach. The procedure is based on the survey of the blocks that were already detached from the slope and had accumulated at the foot of the slope in addition to the available historical data.

  14. 76 FR 55167 - Designation of Three Individuals Pursuant to Executive Order 13573 of May 18, 2011, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-06

    ... Pursuant to Executive Order 13573 of May 18, 2011, ``Blocking Property of Senior Officials of the... individuals whose property and interests in property are blocked pursuant to Executive Order 13573 of May 18...-hour fax-on-demand service, Tel.: 202/622-0077. Background On May 18, 2011, the President issued...

  15. 31 CFR 537.201 - Prohibited transactions involving certain blocked property.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[BURMA].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the...

  16. 31 CFR 537.201 - Prohibited transactions involving certain blocked property.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[BURMA].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the...

  17. 31 CFR 537.201 - Prohibited transactions involving certain blocked property.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Office of Foreign Assets Control's Specially Designated Nationals and Blocked Persons List (“SDN List”) with the identifier “[BURMA].” The SDN List is accessible through the following page on the Office of Foreign Assets Control's Web site: http://www.treasury.gov/sdn. Additional information pertaining to the...

  18. Joint kinetic determinants of starting block performance in athletic sprinting.

    PubMed

    Brazil, Adam; Exell, Timothy; Wilson, Cassie; Willwacher, Steffen; Bezodis, Ian N; Irwin, Gareth

    2018-07-01

    The aim of this study was to explore the relationships between lower limb joint kinetics, external force production and starting block performance (normalised average horizontal power, NAHP). Seventeen male sprinters (100 m PB, 10.67 ± 0.32 s) performed maximal block starts from instrumented starting blocks (1000 Hz) whilst 3D kinematics (250 Hz) were also recorded during the block phase. Ankle, knee and hip resultant joint moment and power were calculated at the rear and front leg using inverse dynamics. Average horizontal force applied to the front (r = 0.46) and rear (r = 0.44) block explained 86% of the variance in NAHP. At the joint level, many "very likely" to "almost certain" relationships (r = 0.57 to 0.83) were found between joint kinetic data and the magnitude of horizontal force applied to each block although stepwise multiple regression revealed that 55% of the variance in NAHP was accounted for by rear ankle moment, front hip moment and front knee power. The current study provides novel insight into starting block performance and the relationships between lower limb joint kinetic and external kinetic data that can help inform physical and technical training practices for this skill.

  19. 26 CFR 1.167(a)-7 - Accounting for depreciable property.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... approximately the same useful lives may be grouped together. Such an account is commonly known as a group... composite account. For example, all the assets used in a business may be included in a single account. Group..., cost, character, use, etc. (b) When group, classified, or composite accounts are used with average...

  20. Block oscillation model for impact crater collapse

    NASA Astrophysics Data System (ADS)

    Ivanov, B. A.; Kostuchenko, V. N.

    1997-03-01

    Previous investigations of the impact crater formation mechanics have shown that the late stage, a transient cavity collapse in a gravity field, may be modeled with a traditional rock mechanics if one ascribes very specific mechanical properties of rock in the vicinity of a crater: an effective strength of rock needed is around 30 bar, and effective angle of internal friction below 5 deg. The rock media with such properties may be supposed 'temporary fluidized'. The nature of this fluidization is now poorly understood; an acoustic (vibration) nature of this fluidization has been suggested. This model now seems to be the best approach to the problem. The open question is how to implement the model (or other possible models) in a hydrocode for numerical simulation of a dynamic crater collapse. We study more relevant models of mechanical behavior of rocks during cratering. The specific of rock deformation is that the rock media deforms not as a plastic metal-like continuum, but as a system of discrete rock blocks. The deep drilling of impact craters revealed the system of rock blocks of 50 m to 200 m in size. We used the model of these block oscillations to formulate the appropriate rheological law for the subcrater flow during the modification stage.

  1. 26 CFR 1.167(f)-1 - Reduction of salvage value taken into account for certain personal property.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... does not exceed 10 percent of the basis of the property for determining depreciation, as of the time as... into account all adjustments under section 1016 other than (1) the adjustment under section 1016(a)(2) for depreciation allowed or allowable to the taxpayer, and (2) the adjustment under section 1016(a)(19...

  2. Bonding and magnetic response properties of several toroid structures. Insights of the role of Ni2S2 as a building block from relativistic density functional theory calculations.

    PubMed

    Muñoz-Castro, Alvaro

    2011-10-06

    Relativistic density functional calculations were carried out on several nickel toroid mercaptides of the general formula [Ni(μ-SR)(2)](n), with the aim to characterize and analyze their stability and magnetic response properties, in order to gain more insights into their stabilization and size-dependent behavior. The Ni-ligand interaction has been studied by means projected density of states and energy decomposition analysis, which denotes its stabilizing character. The graphical representation of the response to an external magnetic field is applied for the very first time taking into account the spin-orbit term. This map allows one to clearly characterize the magnetic behavior inside and in the closeness of the toroid structure showing the prescence of paratropic ring currents inside the Ni(n) ring, and by contrast, diatropic currents confined in each Ni(2)S(2) motif denoting an aromatic behavior (in terms of magnetic criteria). The calculated data suggests that the Ni(2)S(2) moiety can be regarded as a stable constructing block, which can afford several toroid structures of different nuclearities in agreement with that reported in the experimental literature. In addition, the effects of the relativistic treatment over the magnetic response properties on these lighter compounds are denoted by comparing nonrelativistic, scalar relativistic, and scalar plus spin-orbit relativistic treatments, showing their acting, although nonpronunced, role.

  3. Block copolymers for alkaline fuel cell membrane materials

    NASA Astrophysics Data System (ADS)

    Li, Yifan

    Alkaline fuel cells (AFCs) using anion exchange membranes (AEMs) as electrolyte have recently received considerable attention. AFCs offer some advantages over proton exchange membrane fuel cells, including the potential of non-noble metal (e.g. nickel, silver) catalyst on the cathode, which can dramatically lower the fuel cell cost. The main drawback of traditional AFCs is the use of liquid electrolyte (e.g. aqueous potassium hydroxide), which can result in the formation of carbonate precipitates by reaction with carbon dioxide. AEMs with tethered cations can overcome the precipitates formed in traditional AFCs. Our current research focuses on developing different polymer systems (blend, block, grafted, and crosslinked polymers) in order to understand alkaline fuel cell membrane in many aspects and design optimized anion exchange membranes with better alkaline stability, mechanical integrity and ionic conductivity. A number of distinct materials have been produced and characterized. A polymer blend system comprised of poly(vinylbenzyl chloride)-b-polystyrene (PVBC-b-PS) diblock copolymer, prepared by nitroxide mediated polymerization (NMP), with poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) or brominated PPO was studied for conversion into a blend membrane for AEM. The formation of a miscible blend matrix improved mechanical properties while maintaining high ionic conductivity through formation of phase separated ionic domains. Using anionic polymerization, a polyethylene based block copolymer was designed where the polyethylene-based block copolymer formed bicontinuous morphological structures to enhance the hydroxide conductivity (up to 94 mS/cm at 80 °C) while excellent mechanical properties (strain up to 205%) of the polyethylene block copolymer membrane was observed. A polymer system was designed and characterized with monomethoxy polyethylene glycol (mPEG) as a hydrophilic polymer grafted through substitution of pendent benzyl chloride groups of a PVBC

  4. Conjugated block copolymers: A building block for high-performance organic photovoltaics

    NASA Astrophysics Data System (ADS)

    Guo, Changhe

    approach to generate contrast from differences in optoelectronic properties and enable chemical imaging of organic materials. The widely-studied polymer/fullerene system is used as a test sample to demonstrate the application of this technique for structure characterization in the active layer of organic solar cells. In addition, well-ordered equilibrium nanostructures and covalent control of donor/acceptor interfaces make P3HT-b-PFTBT an excellent model for studying the effect of crystalline texture in the active layer on charge transport and photovoltaic performance. Solvent additives are applied to induce a drastic texture change from mainly face-on to edge-on orientations in crystalline P3HT domains of block copolymer thin films. We find that P3HT- b-PFTBT block copolymer devices demonstrate similar optimal performance, regardless of the dramatic changes in the predominant crystalline orientations adopted in P3HT domains. Our results provide further insights into the molecular organization required for efficient charge transport and device operation.

  5. Phase separation and mechanical properties of an elastomeric biomaterial from spider wrapping silk and elastin block copolymers.

    PubMed

    Muiznieks, Lisa D; Keeley, Fred W

    2016-10-01

    Elastin and silk spidroins are fibrous, structural proteins with elastomeric properties of extension and recoil. While elastin is highly extensible and has excellent recovery of elastic energy, silks are particularly strong and tough. This study describes the biophysical characterization of recombinant polypeptides designed by combining spider wrapping silk and elastin-like sequences as a strategy to rationally increase the strength of elastin-based materials while maintaining extensibility. We demonstrate a thermo-responsive phase separation and spontaneous colloid-like droplet formation from silk-elastin block copolymers, and from a 34 residue disordered region of Argiope trifasciata wrapping silk alone, and measure a comprehensive suite of tensile mechanical properties from cross-linked materials. Silk-elastin materials exhibited significantly increased strength, toughness, and stiffness compared to an elastin-only material, while retaining high failure strains and low energy loss upon recoil. These data demonstrate the mechanical tunability of protein polymer biomaterials through modular, chimeric recombination, and provide structural insights into mechanical design. © 2016 Wiley Periodicals, Inc. Biopolymers 105: 693-703, 2016. © 2016 Wiley Periodicals, Inc.

  6. Responsive Block Copolymer and Gold Nanoparticle Hybrid Nanotubes.

    NASA Astrophysics Data System (ADS)

    Chang, Sehoon; Singamaneni, Srikanth; Young, Seth; Tsukruk, Vladimir

    2009-03-01

    We demonstrate the facile fabrication of responsive polymer and metal nanoparticle composite nanotube structures. The nanotubes are comprised of responsive block copolymer, polystyrene-block-poly (2-vinylpyridine) (PS-b-P2VP), and gold nanoparticles. PS-b-P2VP nanotubes were fabricated using porous alumina template and in situ reduction of the gold nanoparticles in P2VP domains. Owing to the pH sensitive nature of P2VP (anionic polymer with a pKa of 3.8), the nanotubes exhibit a dramatic change in topology in response to the changes in the external pH. Furthermore, the gold nanoparticles in the responsive block exhibit a reversible aggregation, causing a reversible change in optical properties such as absorption.

  7. The effect of glazing and aging on the surface properties of CAD/CAM resin blocks

    PubMed Central

    Tuncer, Safa; Kara, Dilan; Demirci, Mustafa

    2018-01-01

    PURPOSE To investigate the effect of accelerated aging on surface properties of glazed CAD/CAM resin blocks using a 2D surface profilometer and a 3D non-contact optical profilometer. MATERIALS AND METHODS Three types of CAD/CAM resin restorative materials, LAVA Ultimate (3M ESPE, St Paul, MN, USA), VITA Enamic (Vita Zahnfabrik H. Rauter, Bad Säckingen, Germany), and Cerasmart (GC Corparation, Tokyo, Japan) were used for this study. CAD/CAM blocks were cut in 3-mm thickness slabs and divided into three groups; Group 1: control group (specimens polished with 600 grit SCI paper); Group 2: specimens sandblasted, silanized, and glazed with Optiglaze Color (GC); Group 3: glazed specimens subjected to 5000 thermocycles (n=15). The surface roughness (Ra and Rz) was evaluated using a profilometer and a 3D scanning instrument. Data were analyzed using two-way ANOVA and Tukey's post-hoc test (P<.05). RESULTS LAVA, VITA, and Cerasmart exhibited statistically similar Ra and Rz values for each group (P>.05). For VITA and Cerasmart, the specimens in Group 1 exhibited significantly higher Ra values than Group 2 (P<.05). Group 1 (0.502 Ra), Group 2 (0.384 Ra), and Group 3 (0.431 Ra) exhibited statistically similar Ra values for LAVA (P=.062). After 5000 thermocycles, surface roughness values did not change significantly for glazed LAVA, VITA, and Cerasmart (P>.05). CONCLUSION Glaze material Optiglaze Color makes CAD/CAM resin surfaces smooth and glazed CAD/CAM surfaces seem resistant to deterioration under 5000 thermocycles. PMID:29503714

  8. The effect of glazing and aging on the surface properties of CAD/CAM resin blocks.

    PubMed

    Tekçe, Neslihan; Fidan, Sinan; Tuncer, Safa; Kara, Dilan; Demirci, Mustafa

    2018-02-01

    To investigate the effect of accelerated aging on surface properties of glazed CAD/CAM resin blocks using a 2D surface profilometer and a 3D non-contact optical profilometer. Three types of CAD/CAM resin restorative materials, LAVA Ultimate (3M ESPE, St Paul, MN, USA), VITA Enamic (Vita Zahnfabrik H. Rauter, Bad Säckingen, Germany), and Cerasmart (GC Corparation, Tokyo, Japan) were used for this study. CAD/CAM blocks were cut in 3-mm thickness slabs and divided into three groups; Group 1: control group (specimens polished with 600 grit SCI paper); Group 2: specimens sandblasted, silanized, and glazed with Optiglaze Color (GC); Group 3: glazed specimens subjected to 5000 thermocycles (n=15). The surface roughness (R a and R z ) was evaluated using a profilometer and a 3D scanning instrument. Data were analyzed using two-way ANOVA and Tukey's post-hoc test ( P <.05). LAVA, VITA, and Cerasmart exhibited statistically similar R a and R z values for each group ( P >.05). For VITA and Cerasmart, the specimens in Group 1 exhibited significantly higher R a values than Group 2 ( P <.05). Group 1 (0.502 R a ), Group 2 (0.384 R a ), and Group 3 (0.431 R a ) exhibited statistically similar R a values for LAVA ( P =.062). After 5000 thermocycles, surface roughness values did not change significantly for glazed LAVA, VITA, and Cerasmart ( P >.05). Glaze material Optiglaze Color makes CAD/CAM resin surfaces smooth and glazed CAD/CAM surfaces seem resistant to deterioration under 5000 thermocycles.

  9. A Research Project on the Emulsifying and Homogenizing Properties of Block Copolymers in Polymer Blends.

    DTIC Science & Technology

    1987-06-15

    Chain C.V. Berney Scattering in Heterogeneous P. Kofinas Block Copolymers R.E. Cohen 18. SANS Studies of the Configu- C.V. Berney rations of Single...Studies of the Configuratins C.V. Berney Single Chains in Heterogeneous Block P. Cheng Copolymers, J. Materials Research, P. Dofinas in press (1987) R.E...Cohen 2. A Reexamination of the Configurations C.V. Berney of Single-Chain Scattering in Hetero- P. Kofinas geneous Block Copolymers, R.E. Cohen

  10. Azidated Ether-Butadiene-Ether Block Copolymers as Binders for Solid Propellants

    NASA Astrophysics Data System (ADS)

    Cappello, Miriam; Lamia, Pietro; Mura, Claudio; Polacco, Giovanni; Filippi, Sara

    2016-07-01

    Polymeric binders for solid propellants are usually based on hydroxyl-terminated polybutadiene (HTPB), which does not contribute to the overall energy output. Azidic polyethers represent an interesting alternative but may have poorer mechanical properties. Polybutadiene-polyether copolymers may combine the advantages of both. Four different ether-butadiene-ether triblock copolymers were prepared and azidated starting from halogenated and/or tosylated monomers using HTPB as initiator. The presence of the butadiene block complicates the azidation step and reduces the storage stability of the azidic polymer. Nevertheless, the procedure allows modifying the binder properties by varying the type and lengths of the energetic blocks.

  11. 78 FR 31631 - Designation of One (1) Individual Pursuant to Executive Orders 13572 of April 29, 2011, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-24

    ... to Human Rights Abuses in Syria'' and 13573 of May 18, 2011, ``Blocking Property of Senior Officials... 13572 of April 29, 2011, ``Blocking Property of Certain Persons with Respect to Human Rights Abuses in...

  12. 49 CFR 371.13 - Accounting.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false Accounting. 371.13 Section 371.13 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION FEDERAL MOTOR CARRIER SAFETY REGULATIONS BROKERS OF PROPERTY § 371.13 Accounting...

  13. Catheter ablation as a treatment of atrioventricular block.

    PubMed

    Tuohy, Stephen; Saliba, Walid; Pai, Manjunath; Tchou, Patrick

    2018-01-01

    Symptomatic second-degree atrioventricular (AV) block is typically treated by implantation of a pacemaker. An otherwise healthy AV conduction system can nevertheless develop AV block due to interference from junctional extrasystoles. When present with a high burden, these can produce debilitating symptoms from AV block despite an underlying normal AV node and His-Purkinje system properties. The purpose of this study was to describe a catheter ablation approach for alleviating symptomatic AV block due to a ventricular nodal pathway interfering with AV conduction. Common clinical monitoring techniques such as Holter and event recorders were used. Standard electrophysiological study techniques using multipolar recording and ablation catheters were utilized during procedures. A 55-year-old woman presented with highly symptomatic, high-burden second-degree AV block due to concealed and manifest junctional premature beats. Electrophysiological characteristics indicated interference of AV conduction due to a concealed ventricular nodal pathway as the cause of the AV block. The patient's AV nodal and His-Purkinje system conduction characteristics were otherwise normal. Radiofrequency catheter ablation of the pathway was successful in restoring normal AV conduction and eliminating her clinical symptoms. Pathways inserting into the AV junction can interfere with AV conduction. When present at a high burden, this type of AV block can be highly symptomatic. Catheter ablation techniques can be used to alleviate this type of AV block and restore normal AV conduction. Copyright © 2017 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved.

  14. Morphology, directed self-assembly and pattern transfer from a high molecular weight polystyrene-block-poly(dimethylsiloxane) block copolymer film

    NASA Astrophysics Data System (ADS)

    Cheng, Li-Chen; Bai, Wubin; Fernandez Martin, Eduardo; Tu, Kun-Hua; Ntetsikas, Konstantinos; Liontos, George; Avgeropoulos, Apostolos; Ross, C. A.

    2017-04-01

    The self-assembly of block copolymers with large feature sizes is inherently challenging as the large kinetic barrier arising from chain entanglement of high molecular weight (MW) polymers limits the extent over which long-range ordered microdomains can be achieved. Here, we illustrate the evolution of thin film morphology from a diblock copolymer of polystyrene-block-poly(dimethylsiloxane) exhibiting total number average MW of 123 kg mol-1, and demonstrate the formation of layers of well-ordered cylindrical microdomains under appropriate conditions of binary solvent mix ratio, commensurate film thickness, and solvent vapor annealing time. Directed self-assembly of the block copolymer within lithographically patterned trenches occurs with alignment of cylinders parallel to the sidewalls. Fabrication of ordered cobalt nanowire arrays by pattern transfer was also implemented, and their magnetic properties and domain wall behavior were characterized.

  15. Use of wastes derived from earthquakes for the production of concrete masonry partition wall blocks

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Xiao Zhao; Faculty of Architecture, Civil Engineering and Environment Engineering and Mechanics, Sichuan University; Ling, Tung-Chai

    2011-08-15

    Highlights: > Solved the scientific and technological challenges impeding use of waste rubble derived from earthquake, by providing an alternative solution of recycling the waste in moulded concrete block products. > Significant requirements for optimum integration on the utilization of the waste aggregates in the production of concrete blocks are investigated. > A thorough understanding of the mechanical properties of concrete blocks made with waste derived from earthquake is reported. - Abstract: Utilization of construction and demolition (C and D) wastes as recycled aggregates in the production of concrete and concrete products have attracted much attention in recent years. However,more » the presence of large quantities of crushed clay brick in some the C and D waste streams (e.g. waste derived collapsed masonry buildings after an earthquake) renders the recycled aggregates unsuitable for high grade use. One possibility is to make use of the low grade recycled aggregates for concrete block production. In this paper, we report the results of a comprehensive study to assess the feasibility of using crushed clay brick as coarse and fine aggregates in concrete masonry block production. The effects of the content of crushed coarse and fine clay brick aggregates (CBA) on the mechanical properties of non-structural concrete block were quantified. From the experimental test results, it was observed that incorporating the crushed clay brick aggregates had a significant influence on the properties of blocks. The hardened density and drying shrinkage of the block specimens decreased with an increase in CBA content. The use of CBA increased the water absorption of block specimens. The results suggested that the amount of crushed clay brick to be used in concrete masonry blocks should be controlled at less than 25% (coarse aggregate) and within 50-75% for fine aggregates.« less

  16. 76 FR 7695 - Iranian Human Rights Abuses Sanctions Regulations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-11

    ... 562.301 Blocked account; blocked property. 562.302 Effective date. 562.303 Entity. 562.304 Interest. 562.305 Licenses; general and specific. 562.306 Person. 562.307 Property; property interest. 562.308... and acquisition of an interest in blocked property. 562.404 Transactions ordinarily incident to a...

  17. Broadband sound blocking in phononic crystals with rotationally symmetric inclusions.

    PubMed

    Lee, Joong Seok; Yoo, Sungmin; Ahn, Young Kwan; Kim, Yoon Young

    2015-09-01

    This paper investigates the feasibility of broadband sound blocking with rotationally symmetric extensible inclusions introduced in phononic crystals. By varying the size of four equally shaped inclusions gradually, the phononic crystal experiences remarkable changes in its band-stop properties, such as shifting/widening of multiple Bragg bandgaps and evolution to resonance gaps. Necessary extensions of the inclusions to block sound effectively can be determined for given incident frequencies by evaluating power transmission characteristics. By arraying finite dissimilar unit cells, the resulting phononic crystal exhibits broadband sound blocking from combinational effects of multiple Bragg scattering and local resonances even with small-numbered cells.

  18. Ion solvation in polymer blends and block copolymer melts: effects of chain length and connectivity on the reorganization of dipoles.

    PubMed

    Nakamura, Issei

    2014-05-29

    We studied the thermodynamic properties of ion solvation in polymer blends and block copolymer melts and developed a dipolar self-consistent field theory for polymer mixtures. Our theory accounts for the chain connectivity of polymerized monomers, the compressibility of the liquid mixtures under electrostriction, the permanent and induced dipole moments of monomers, and the resultant dielectric contrast among species. In our coarse-grained model, dipoles are attached to the monomers and allowed to rotate freely in response to electrostatic fields. We demonstrate that a strong electrostatic field near an ion reorganizes dipolar monomers, resulting in nonmonotonic changes in the volume fraction profile and the dielectric function of the polymers with respect to those of simple liquid mixtures. For the parameter sets used, the spatial variations near an ion can be in the range of 1 nm or larger, producing significant differences in the solvation energy among simple liquid mixtures, polymer blends, and block copolymers. The solvation energy of an ion depends substantially on the chain length in block copolymers; thus, our theory predicts the preferential solvation of ions arising from differences in chain length.

  19. ["Habitual" left branch block alternating with 2 "disguised" bracnch block].

    PubMed

    Lévy, S; Jullien, G; Mathieu, P; Mostefa, S; Gérard, R

    1976-10-01

    Two cases of alternating left bundle branch block and "masquerading block" (with left bundle branch morphology in the stnadard leads and right bundle branch block morphology in the precordial leads) were studied by serial tracings and his bundle electrocardiography. In case 1 "the masquerading" block was associated with a first degree AV block related to a prolongation of HV interval. This case is to our knowledge the first cas of alternating bundle branch block in which his bundle activity was recorded in man. In case 2, the patient had atrial fibrilation and His bundle recordings were performed while differents degrees of left bundle branch block were present: The mechanism of the alternation and the concept of "masquerading" block are discussed. It is suggested that this type of block represents a right bundle branch block associated with severe lesions of the "left system".

  20. Block copolymer libraries: modular versatility of the macromolecular Lego system.

    PubMed

    Lohmeijer, Bas G G; Wouters, Daan; Yin, Zhihui; Schubert, Ulrich S

    2004-12-21

    The synthesis and characterization of a new 4 x 4 library of block copolymers based on polystyrene and poly(ethylene oxide) connected by an asymmetrical octahedral bis(terpyridine) ruthenium complex at the block junction are described, while initial studies on the thin film morphology of the components of the library are presented by the use of Atomic Force Microscopy, demonstrating the impact of a library approach to derive structure-property relationships.

  1. Modeling trial by trial and block feedback in perceptual learning

    PubMed Central

    Liu, Jiajuan; Dosher, Barbara; Lu, Zhong-Lin

    2014-01-01

    Feedback has been shown to play a complex role in visual perceptual learning. It is necessary for performance improvement in some conditions while not others. Different forms of feedback, such as trial-by-trial feedback or block feedback, may both facilitate learning, but with different mechanisms. False feedback can abolish learning. We account for all these results with the Augmented Hebbian Reweight Model (AHRM). Specifically, three major factors in the model advance performance improvement: the external trial-by-trial feedback when available, the self-generated output as an internal feedback when no external feedback is available, and the adaptive criterion control based on the block feedback. Through simulating a comprehensive feedback study (Herzog & Fahle 1997, Vision Research, 37 (15), 2133–2141), we show that the model predictions account for the pattern of learning in seven major feedback conditions. The AHRM can fully explain the complex empirical results on the role of feedback in visual perceptual learning. PMID:24423783

  2. The rapid cooling of the Nansha Block, southern South China Sea

    NASA Astrophysics Data System (ADS)

    Dong, M.; Zhang, J.

    2017-12-01

    Since the Late Cretaceous and Cenozoic, the Nansha Block has experienced a series of tectonic process and separated from South China continent to the south. As an exotic micro-continental, Nansha Block has an obvious different lithospheric rheology property from surrounding region. The lithosphere and mantle dynamic and rheology are mainly controlled by temperature. Therefore, we calculated the 3D temperature field and geothermal gradient of Nansha Block's upper mantle by using the S-wave velocity structure from surface wave tomography. The results show that the depth where temperature of 1300° as the lithospheric thickness is in close correspondence with the top of the seismic low velocity zone. The temperature of the upper mantle in Nansha Block is significantly lower than that of surrounding. It implies that Nansha Block experienced a rapid cooling event. We propose that the rapid cooling can be partly attributed to three reasons: 1) Nansha Block is a relatively stable block with no interior geothermal activity. 2) No external heat source to provide energy. 3) Abnormal mantle convection under Nansha Block accelerated the cooling.

  3. Flight control systems properties and problems. Volume 2: Block diagram compendium

    NASA Technical Reports Server (NTRS)

    Johnston, D. E.

    1975-01-01

    A compendium of stability augmentation system and autopilot block diagrams is presented. Descriptive materials for 48 different types of aircraft systems are provided. A broad representation of the many mechanical approaches which have been used for aircraft control is developed.

  4. 77 FR 14592 - Identification of an Entity Pursuant to Executive Order 13582 of August 17, 2011, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-12

    ... 17, 2011, ``Blocking Property of the Government of Syria and Prohibiting Certain Transactions With Respect to Syria.'' AGENCY: Office of Foreign Assets Control, Treasury. ACTION: Notice. SUMMARY: The... Executive Order 13582 of August 17, 2011, ``Blocking Property of the Government of Syria and Prohibiting...

  5. 31 CFR 594.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... reimbursement for normal service charges owed it by the owner of that blocked account. (b) As used in this....505 Entries in certain accounts for normal service charges authorized. (a) A U.S. financial... to correct bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and...

  6. 31 CFR 586.508 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... institution by the owner of such blocked account. (b) As used in this section, the term normal service charge..., and Statements of Licensing Policy § 586.508 Entries in certain accounts for normal service charges... by way of limitation, minimum balance charges, notary and protest fees, and charges for reference...

  7. 31 CFR 536.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... § 536.505 Entries in certain accounts for normal service charges authorized. (a) U.S. financial... or reimbursement for normal service charges owed to such U.S. financial institution by the owner of such blocked account. (b) As used in this section, the term normal service charge shall include charges...

  8. 31 CFR 595.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Entries in certain accounts for normal service charges authorized. (a) U.S. financial institutions are... reimbursement for normal service charges owed to such U.S. financial institution by the owner of such blocked account. (b) As used in this section, the term normal service charge shall include charges in payment or...

  9. 31 CFR 538.504 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Entries in certain accounts for normal service charges authorized. (a) U.S. financial institutions are... reimbursement for normal service charges owed to such U.S. financial institution by the owner of such blocked account. (b) As used in this section, the term normal service charge shall include charges in payment or...

  10. 31 CFR 543.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... reimbursement for normal service charges owed it by the owner of that blocked account. (b) As used in this....505 Entries in certain accounts for normal service charges authorized. (a) A U.S. financial... charges to correct bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary...

  11. 36 CFR 1008.10 - Accounting for disclosures.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Accounting for disclosures... ACT § 1008.10 Accounting for disclosures. (a) Maintenance of an accounting. (1) Where a record is... person or agency to whom the disclosure was made. (3) Accountings prepared under this section shall be...

  12. 49 CFR 1242.30 - Dismantling retired road property and depreciation (accounts XX-17-39, XX-18-39, XX-19-39, 62-17...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Dismantling retired road property and depreciation....30 Dismantling retired road property and depreciation (accounts XX-17-39, XX-18-39, XX-19-39, 62-17..., switching and other) in proportion to the separation of common repair and maintenance expenses associated...

  13. Allocating operating room block time using historical caseload variability.

    PubMed

    Hosseini, Narges; Taaffe, Kevin M

    2015-12-01

    Operating room (OR) allocation and planning is one of the most important strategic decisions that OR managers face. The number of ORs that a hospital opens depends on the number of blocks that are allocated to the surgical groups, services, or individual surgeons, combined with the amount of open posting time (i.e., first come, first serve posting) that the hospital wants to provide. By allocating too few ORs, a hospital may turn away surgery demand whereas opening too many ORs could prove to be a costly decision. The traditional method of determining block frequency and size considers the average historical surgery demand for each group. However, given that there are penalties to the system for having too much or too little OR time allocated to a group, demand variability should play a role in determining the real OR requirement. In this paper we present an algorithm that allocates block time based on this demand variability, specifically accounting for both over-utilized time (time used beyond the block) and under-utilized time (time unused within the block). This algorithm provides a solution to the situation in which total caseload demand can be accommodated by the total OR resource set, in other words not in a capacity-constrained situation. We have found this scenario to be common among several regional healthcare providers with large OR suites and excess capacity. This algorithm could be used to adjust existing blocks or to assign new blocks to surgeons that did not previously have a block. We also have studied the effect of turnover time on the number of ORs that needs to be allocated. Numerical experiments based on real data from a large health-care provider indicate the opportunity to achieve over 2,900 hours of OR time savings through improved block allocations.

  14. Micromechanical modeling of elastic properties of cortical bone accounting for anisotropy of dense tissue.

    PubMed

    Salguero, Laura; Saadat, Fatemeh; Sevostianov, Igor

    2014-10-17

    The paper analyzes the connection between microstructure of the osteonal cortical bone and its overall elastic properties. The existing models either neglect anisotropy of the dense tissue or simplify cortical bone microstructure (accounting for Haversian canals only). These simplifications (related mostly to insufficient mathematical apparatus) complicate quantitative analysis of the effect of microstructural changes - produced by age, microgravity, or some diseases - on the overall mechanical performance of cortical bone. The present analysis fills this gap; it accounts for anisotropy of the dense tissue and uses realistic model of the porous microstructure. The approach is based on recent results of Sevostianov et al. (2005) and Saadat et al. (2012) on inhomogeneities in a transversely-isotropic material. Bone's microstructure is modeled according to books of Martin and Burr (1989), Currey (2002), and Fung (1993) and includes four main families of pores. The calculated elastic constants for porous cortical bone are in agreement with available experimental data. The influence of each of the pore types on the overall moduli is examined. Copyright © 2014 Elsevier Ltd. All rights reserved.

  15. Tensile film clamps and mounting block for the rheovibron and autovibron viscoelastometer

    NASA Technical Reports Server (NTRS)

    Stoakley, Diane M. (Inventor); St.clair, Anne K. (Inventor); Little, Bruce D. (Inventor)

    1989-01-01

    A set of film clamps and a mounting block for use in the determination of tensile modulus and damping properties of films in a manually operated or automated Rheovibron is diagrammed. These clamps and mounting block provide uniformity of sample gripping and alignment in the instrument. Operator dependence and data variability are greatly reduced.

  16. 31 CFR 547.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... reimbursement for normal service charges owed it by the owner of that blocked account. (b) As used in this... Policy § 547.505 Entries in certain accounts for normal service charges authorized. (a) A U.S. financial... charges to correct bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary...

  17. 31 CFR 544.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... payment or reimbursement for normal service charges owed it by the owner of that blocked account. (b) As... Licensing Policy § 544.505 Entries in certain accounts for normal service charges authorized. (a) A U.S... adjustment charges to correct bookkeeping errors; and, but not by way of limitation, minimum balance charges...

  18. 31 CFR 542.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... normal service charges owed it by the owner of that blocked account. (b) As used in this section, the... Entries in certain accounts for normal service charges authorized. (a) A U.S. financial institution is... bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and protest fees, and...

  19. 31 CFR 546.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... normal service charges owed it by the owner of that blocked account. (b) As used in this section, the... Entries in certain accounts for normal service charges authorized. (a) A U.S. financial institution is... bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and protest fees, and...

  20. 31 CFR 588.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... reimbursement for normal service charges owed it by the owner of that blocked account. (b) As used in this... § 588.505 Entries in certain accounts for normal service charges authorized. (a) A U.S. financial... to correct bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and...

  1. 31 CFR 548.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... normal service charges owed it by the owner of that blocked account. (b) As used in this section, the... Entries in certain accounts for normal service charges authorized. (a) A U.S. financial institution is... bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and protest fees, and...

  2. 31 CFR 545.504 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... reimbursement for normal service charges owed it by the owner of that blocked account. (b) As used in this... § 545.504 Entries in certain accounts for normal service charges authorized. (a) A U.S. financial... to correct bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and...

  3. 31 CFR 597.504 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Licensing Policy § 597.504 Entries in certain accounts for normal service charges authorized. (a) U.S... institution in payment or reimbursement for normal service charges owed to such U.S. financial institution by the owner of such blocked account. (b) As used in this section, the term normal service charge shall...

  4. 31 CFR 541.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... normal service charges owed it by the owner of that blocked account. (b) As used in this section, the... Entries in certain accounts for normal service charges authorized. (a) A U.S. financial institution is... bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and protest fees, and...

  5. 31 CFR 551.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... normal service charges owed it by the owner of that blocked account. (b) As used in this section, the... Entries in certain accounts for normal service charges authorized. (a) A U.S. financial institution is... bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and protest fees, and...

  6. 31 CFR 593.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... payment or reimbursement for normal service charges owed it by the owner of that blocked account. (b) As... Licensing Policy § 593.505 Entries in certain accounts for normal service charges authorized. (a) A U.S... adjustment charges to correct bookkeeping errors; and, but not by way of limitation, minimum balance charges...

  7. 31 CFR 537.505 - Entries in certain accounts for normal service charges authorized.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... normal service charges owed it by the owner of that blocked account. (b) As used in this section, the... Entries in certain accounts for normal service charges authorized. (a) A U.S. financial institution is... bookkeeping errors; and, but not by way of limitation, minimum balance charges, notary and protest fees, and...

  8. Tough and Sustainable Graft Block Copolymer Thermoplastics

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Zhang, Jiuyang; Li, Tuoqi; Mannion, Alexander M.

    Fully sustainable poly[HPMC-g-(PMVL-b-PLLA)] graft block copolymer thermoplastics were prepared from hydroxypropyl methylcellulose (HPMC), β-methyl-δ-valerolactone (MVL), and l-lactide (LLA) using a facile two-step sequential addition approach. In these materials, rubbery PMVL functions as a bridge between the semirigid HPMC backbone and the hard PLLA end blocks. This specific arrangement facilitates PLLA crystallization, which induces microphase separation and physical cross-linking. By changing the backbone molar mass or side chain composition, these thermoplastic materials can be easily tailored to access either plastic or elastomeric behavior. Moreover, the graft block architecture can be utilized to overcome the processing limitations inherent to linear block polymers.more » Good control over molar mass and composition enables the deliberate design of HPMC-g-(PMVL-b-PLLA) samples that are incapable of microphase separation in the melt state. These materials are characterized by relatively low zero shear viscosities in the melt state, an indication of easy processability. The simple and scalable synthetic procedure, use of inexpensive and renewable precursors, and exceptional rheological and mechanical properties make HPMC-g-(PMVL-b-PLLA) polymers attractive for a broad range of applications.« less

  9. A novel dihydropyridine with 3-aryl meta-hydroxyl substitution blocks L-type calcium channels in rat cardiomyocytes

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Galvis-Pareja, David; Centro Estudios Moleculares de la Célula; Zapata-Torres, Gerald

    2014-08-15

    Rationale: Dihydropyridines are widely used for the treatment of several cardiac diseases due to their blocking activity on L-type Ca{sup 2+} channels and their renowned antioxidant properties. Methods: We synthesized six novel dihydropyridine molecules and performed docking studies on the binding site of the L-type Ca{sup 2+} channel. We used biochemical techniques on isolated adult rat cardiomyocytes to assess the efficacy of these molecules on their Ca{sup 2+} channel-blocking activity and antioxidant properties. The Ca{sup 2+} channel-blocking activity was evaluated by confocal microscopy on fluo-3AM loaded cardiomyocytes, as well as using patch clamp experiments. Antioxidant properties were evaluated by flowmore » cytometry using the ROS sensitive dye 1,2,3 DHR. Results: Our docking studies show that a novel compound with 3-OH substitution inserts into the active binding site of the L-type Ca{sup 2+} channel previously described for nitrendipine. In biochemical assays, the novel meta-OH group in the aryl in C4 showed a high blocking effect on L-type Ca{sup 2+} channel as opposed to para-substituted compounds. In the tests we performed, none of the molecules showed antioxidant properties. Conclusions: Only substitutions in C2, C3 and C5 of the aryl ring render dihydropyridine compounds with the capacity of blocking LTCC. Based on our docking studies, we postulate that the antioxidant activity requires a larger group than the meta-OH substitution in C2, C3 or C5 of the dihydropyridine ring. - Highlights: • Dihydropyridine (DHP) molecules are widely used in cardiovascular disease. • DHPs block Ca{sup 2+} entry through LTCC—some DHPs have antioxidant activity as well. • We synthesized 6 new DHPs and tested their Ca{sup 2+} blocking and antioxidant activities. • 3-Aryl meta-hydroxyl substitution strongly increases their Ca{sup 2+} blocking activity. • 3-Aryl meta-hydroxyl substitution did not affect the antioxidant properties.« less

  10. Feasibility of blocking detection in observations from radio occultation

    NASA Astrophysics Data System (ADS)

    Brunner, Lukas; Steiner, Andrea Karin; Scherllin-Pirscher, Barbara; Jury, Martin

    2015-04-01

    Blocking describes an atmospheric situation in which the climatological westerly flow at mid latitudes is weakened or reversed. This is caused by a persistent high pressure system which can be stationary for several days to weeks. In the Northern Hemisphere blocking preferably occurs over the Atlantic/European and the Pacific regions. In recent years blocking has been under close scientific investigation due to its effect on weather extremes, triggering heat waves in summer and cold spells in winter. So far, scientific literature mainly focused on the investigation of blocking in reanalysis and global climate model data sets. However, blocking is underestimated in most climate models due to small-scale processes involved in its evolution. For a detection of blocking, most commonly applied methods are based on the computation of meridional geopotential height gradients at the 500 hPa level. Therefore measurements with adequate vertical, horizontal, and temporal resolution and coverage are required. We use an observational data set based on Global Positioning System (GPS) Radio Occultation (RO) measurements fulfilling these requirements. RO is a relatively new, satellite based remote sensing technique, delivering profiles of atmospheric parameters such as geopotential height, pressure, and temperature. It is characterized by favorable properties like long-term stability, global coverage, and high vertical resolution. Our data set is based on the most recent WEGC RO retrieval. Here we report on a feasibility study for blocking detection and analysis in RO data for two exemplary blocking events: the blocking over Russia in summer 2010 and the blocking over Greenland in late winter 2013. For these two events about 700 RO measurements per day are available in the Northern Hemisphere. We will show that the measurement density and quality of RO observations are favorable for blocking analysis and can therefore contribute to blocking research.

  11. The development and characterization of degradable poly(vinyl ester) and poly(vinyl ester)/PEO block copolymers

    NASA Astrophysics Data System (ADS)

    Lipscomb, Corinne Elizabeth

    The development of biodegradable materials is a challenging and important problem in polymer science. A review of the state of the art in degradable materials is presented, which reveals that current biodegradable materials do not exhibit the thermal or mechanical properties necessary for widespread applications. One strategy for toughening polymeric materials, which has previously been applied to non-degradable thermoplastics and thermoplastic elastomers, is the formation of block copolymers. Poly(vinyl esters) (PVE) homopolymers are known to have a wide range of properties, but PVE block copolymers comprise a class of inexpensive and (bio)degradable materials that were previously unknown. Therefore, the synthesis and properties of these block copolymers were explored in an effort to develop robust degradable materials. This thesis research probes the reaction conditions necessary for the reversible-addition fragmentation chain transfer (RAFT) polymerization and chain extension reactions of vinyl ester monomers. PVE di- and triblock copolymers are synthesized and studied, and the triblock copolymers display extremely poor toughness due to their relatively low molecular weights in light of the high entanglement molecular weight of the poly(vinyl acetate) center block. Attempts to improve the mechanical properties of these materials focus on the incorporation of poly(ethylene oxide) (PEO) as a low entanglement molecular weight and biocompatible center block in PVE-containing triblock copolymers. Depending on the choice of PVE endblocks and the overall polymer composition, crystallization of the PEO block can be controlled, confined, or inhibited. Polymers in which PEO crystallization is completely inhibited exhibit enhanced mechanical properties and behave as weak thermoplastics. In order to understand the relationship between the inhibition of PEO crystallization and the mechanical properties of PVE/PEO materials, these polymers were studied using dynamic

  12. Quantifying cancer cell receptors with paired-agent fluorescent imaging: a novel method to account for tissue optical property effects

    NASA Astrophysics Data System (ADS)

    Sadeghipour, Negar; Davis, Scott C.; Tichauer, Kenneth M.

    2018-02-01

    Dynamic fluorescence imaging approaches can be used to estimate the concentration of cell surface receptors in vivo. Kinetic models are used to generate the final estimation by taking the targeted imaging agent concentration as a function of time. However, tissue absorption and scattering properties cause the final readout signal to be on a different scale than the real fluorescent agent concentration. In paired-agent imaging approaches, simultaneous injection of a suitable control imaging agent with a targeted one can account for non-specific uptake and retention of the targeted agent. Additionally, the signal from the control agent can be a normalizing factor to correct for tissue optical property differences. In this study, the kinetic model used for paired-agent imaging analysis (i.e., simplified reference tissue model) is modified and tested in simulation and experimental data in a way that accounts for the scaling correction within the kinetic model fit to the data to ultimately extract an estimate of the targeted biomarker concentration.

  13. Intracellularly applied anti-P70 antibody blocks the induction of abnormal membrane properties by pentylenetetrazole in identified Euhadra neurons.

    PubMed

    Onozuka, M; Watanabe, K

    1996-04-15

    Using the voltage-clamp technique combined with pressure injection, we have studied the action of pentylenetetrazole (PTZ) on identified Euhadra neurons by examining how the PTZ-induced changes in membrane properties are affected by an antibody against P70, a protein found in the experimentally-induced epileptogenic cortex of rats. Intracellular injection of anti-P70 antibody blocked the induction by PTZ; bursting activity with both of development of negative slope resistance region in the steady state 1-V curve and a reduction in the delayed outward potassium current. These results suggest a novel mechanism of action for PTZ, involving intracellular protein(s) which react with anti-P70 antibody.

  14. Arbitrary lattice symmetries via block copolymer nanomeshes

    PubMed Central

    Majewski, Pawel W.; Rahman, Atikur; Black, Charles T.; Yager, Kevin G.

    2015-01-01

    Self-assembly of block copolymers is a powerful motif for spontaneously forming well-defined nanostructures over macroscopic areas. Yet, the inherent energy minimization criteria of self-assembly give rise to a limited library of structures; diblock copolymers naturally form spheres on a cubic lattice, hexagonally packed cylinders and alternating lamellae. Here, we demonstrate multicomponent nanomeshes with any desired lattice symmetry. We exploit photothermal annealing to rapidly order and align block copolymer phases over macroscopic areas, combined with conversion of the self-assembled organic phase into inorganic replicas. Repeated photothermal processing independently aligns successive layers, providing full control of the size, symmetry and composition of the nanoscale unit cell. We construct a variety of symmetries, most of which are not natively formed by block copolymers, including squares, rhombuses, rectangles and triangles. In fact, we demonstrate all possible two-dimensional Bravais lattices. Finally, we elucidate the influence of nanostructure on the electrical and optical properties of nanomeshes. PMID:26100566

  15. Epidural block

    MedlinePlus

    ... body. This lessens the pain of contractions during childbirth. An epidural block may also be used to ... extremities. This article focuses on epidural blocks during childbirth. How is the Epidural Given? The block or ...

  16. 18 CFR 367.3930 - Account 393, Stores equipment.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... ACT Service Company Property Chart of Accounts § 367.3930 Account 393, Stores equipment. (a) This... materials and supplies. (b) This account must include the following items: (1) Chain falls. (2) Counters. (3...

  17. A spring-block analogy for the dynamics of stock indexes

    NASA Astrophysics Data System (ADS)

    Sándor, Bulcsú; Néda, Zoltán

    2015-06-01

    A spring-block chain placed on a running conveyor belt is considered for modeling stylized facts observed in the dynamics of stock indexes. Individual stocks are modeled by the blocks, while the stock-stock correlations are introduced via simple elastic forces acting in the springs. The dragging effect of the moving belt corresponds to the expected economic growth. The spring-block system produces collective behavior and avalanche like phenomena, similar to the ones observed in stock markets. An artificial index is defined for the spring-block chain, and its dynamics is compared with the one measured for the Dow Jones Industrial Average. For certain parameter regions the model reproduces qualitatively well the dynamics of the logarithmic index, the logarithmic returns, the distribution of the logarithmic returns, the avalanche-size distribution and the distribution of the investment horizons. A noticeable success of the model is that it is able to account for the gain-loss asymmetry observed in the inverse statistics. Our approach has mainly a pedagogical value, bridging between a complex socio-economic phenomena and a basic (mechanical) model in physics.

  18. 5 CFR 2601.301 - Accounting of gifts.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... accounted for by following appropriate internal controls and accounting procedures. (b) The Administration Division shall maintain an inventory of donated personal property valued at over $500. The inventory shall...

  19. Block Copolymer Directed Biomimetic Mineral Formation for Polymer Nanocomposites

    NASA Astrophysics Data System (ADS)

    Gleeson, Sarah; Yu, Tony; Chen, Xi; Marcolongo, Michele; Li, Christopher

    Bone is a hierarchically structured biocomposite comprised of mineralized collagen fibrils. The mechanical properties of bone can be precisely tuned by the structure and morphology of the mineral nanocrystals as well as the organic collagen fibrils. Synthetic materials that can mimic the nanostructure of natural bone show promise to replicate bone's structural function, yet little is known about the mechanism of mineral formation. We previously have shown that hierarchically ordered polymer fibers control the distribution and orientation of hydroxyapatite, enhancing mechanical properties and biocompatibility. We demonstrate a new method for mineralization by forming block copolymer single crystal films of polycaprolactone-block-poly(acrylic acid) (PCL- b-PAA) so that lamellar anionic PAA nanodomains recruit mineral ions and provide one-dimensional confinement to induce orientation. The effect of the anionic domain dimensions on mineral content, orientation, and structure within the polymer matrix is shown. The mechanical properties of the nanocomposite are evaluated to determine the role of mineral orientation and crystallinity in composite strength. These results can be used to tailor the physical mineralization environment to create a more biomimetic bone material.

  20. Multilevel models for evaluating the risk of pedestrian-motor vehicle collisions at intersections and mid-blocks.

    PubMed

    Quistberg, D Alex; Howard, Eric J; Ebel, Beth E; Moudon, Anne V; Saelens, Brian E; Hurvitz, Philip M; Curtin, James E; Rivara, Frederick P

    2015-11-01

    Walking is a popular form of physical activity associated with clear health benefits. Promoting safe walking for pedestrians requires evaluating the risk of pedestrian-motor vehicle collisions at specific roadway locations in order to identify where road improvements and other interventions may be needed. The objective of this analysis was to estimate the risk of pedestrian collisions at intersections and mid-blocks in Seattle, WA. The study used 2007-2013 pedestrian-motor vehicle collision data from police reports and detailed characteristics of the microenvironment and macroenvironment at intersection and mid-block locations. The primary outcome was the number of pedestrian-motor vehicle collisions over time at each location (incident rate ratio [IRR] and 95% confidence interval [95% CI]). Multilevel mixed effects Poisson models accounted for correlation within and between locations and census blocks over time. Analysis accounted for pedestrian and vehicle activity (e.g., residential density and road classification). In the final multivariable model, intersections with 4 segments or 5 or more segments had higher pedestrian collision rates compared to mid-blocks. Non-residential roads had significantly higher rates than residential roads, with principal arterials having the highest collision rate. The pedestrian collision rate was higher by 9% per 10 feet of street width. Locations with traffic signals had twice the collision rate of locations without a signal and those with marked crosswalks also had a higher rate. Locations with a marked crosswalk also had higher risk of collision. Locations with a one-way road or those with signs encouraging motorists to cede the right-of-way to pedestrians had fewer pedestrian collisions. Collision rates were higher in locations that encourage greater pedestrian activity (more bus use, more fast food restaurants, higher employment, residential, and population densities). Locations with higher intersection density had a lower

  1. Multilevel models for evaluating the risk of pedestrian-motor vehicle collisions at intersections and mid-blocks

    PubMed Central

    Quistberg, D. Alex; Howard, Eric J.; Ebel, Beth E.; Moudon, Anne V.; Saelens, Brian E.; Hurvitz, Philip M.; Curtin, James E.; Rivara, Frederick P.

    2015-01-01

    Walking is a popular form of physical activity associated with clear health benefits. Promoting safe walking for pedestrians requires evaluating the risk of pedestrian-motor vehicle collisions at specific roadway locations in order to identify where road improvements and other interventions may be needed. The objective of this analysis was to estimate the risk of pedestrian collisions at intersections and mid-blocks in Seattle, WA. The study used 2007-2013 pedestrian-motor vehicle collision data from police reports and detailed characteristics of the microenvironment and macroenvironment at intersection and mid-block locations. The primary outcome was the number of pedestrian-motor vehicle collisions over time at each location (incident rate ratio [IRR] and 95% confidence interval [95% CI]). Multilevel mixed effects Poisson models accounted for correlation within and between locations and census blocks over time. Analysis accounted for pedestrian and vehicle activity (e.g., residential density and road classification). In the final multivariable model, intersections with 4 segments or 5 or more segments had higher pedestrian collision rates compared to mid-blocks. Non-residential roads had significantly higher rates than residential roads, with principal arterials having the highest collision rate. The pedestrian collision rate was higher by 9% per 10 feet of street width. Locations with traffic signals had twice the collision rate of locations without a signal and those with marked crosswalks also had a higher rate. Locations with a marked crosswalk also had higher risk of collision. Locations with a one-way road or those with signs encouraging motorists to cede the right-of-way to pedestrians had fewer pedestrian collisions. Collision rates were higher in locations that encourage greater pedestrian activity (more bus use, more fast food restaurants, higher employment, residential, and population densities). Locations with higher intersection density had a lower

  2. Poly(lactide)-block-poly([epsilon]-caprolactone-co-[epsilon]-decalactone)-block-poly(lactide) copolymer elastomers

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Schneiderman, Deborah K.; Hill, Erin M.; Martello, Mark T.

    Batch ring opening transesterification copolymerization of ε-caprolactone and ε-decalactone was used to generate statistical copolymers over a wide range of compositions and molar masses. Reactivity ratios determined for this monomer pair, r CL = 5.9 and r DL = 0.03, reveal ε-caprolactone is added preferentially regardless of the propagating chain end. Relative to poly(ε-caprolactone) the crystallinity and melting point of these statistical copolymers were depressed by the addition of ε-decalactone; copolymers containing greater than 31 mol% (46 wt%) ε-decalactone were amorphous. Poly(lactide)-block-poly(ε-caprolactone-co-ε-decalactone)-block-poly(lactide) triblock polymers were also prepared and used to explore the influence of midblock composition on the temperature dependentmore » Flory-Huggins interaction parameter (χ). In addition, uniaxial extension tests were used to determine the effects of midblock composition, poly(lactide) content, and molar mass on the mechanical properties of these new elastomeric triblocks.« less

  3. Influence of Chirality in Ordered Block Copolymer Phases

    NASA Astrophysics Data System (ADS)

    Prasad, Ishan; Grason, Gregory

    2015-03-01

    Block copolymers are known to assemble into rich spectrum of ordered phases, with many complex phases driven by asymmetry in copolymer architecture. Despite decades of study, the influence of intrinsic chirality on equilibrium mesophase assembly of block copolymers is not well understood and largely unexplored. Self-consistent field theory has played a major role in prediction of physical properties of polymeric systems. Only recently, a polar orientational self-consistent field (oSCF) approach was adopted to model chiral BCP having a thermodynamic preference for cholesteric ordering in chiral segments. We implement oSCF theory for chiral nematic copolymers, where segment orientations are characterized by quadrupolar chiral interactions, and focus our study on the thermodynamic stability of bi-continuous network morphologies, and the transfer of molecular chirality to mesoscale chirality of networks. Unique photonic properties observed in butterfly wings have been attributed to presence of chiral single-gyroid networks, this has made it an attractive target for chiral metamaterial design.

  4. 77 FR 43658 - Designation of One (1) Entity Pursuant to Executive Order 13572 of April 29, 2011, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-25

    ... Human Rights Abuses in Syria'' AGENCY: Office of Foreign Assets Control, Treasury. ACTION: Notice... of April 29, 2011, ``Blocking Property of Certain Persons with Respect to Human Rights Abuses in... Executive Order 13572, ``Blocking Property of Certain Persons with Respect to Human Rights Abuses in Syria...

  5. 78 FR 31630 - Designation of One (1) Entity Pursuant to Executive Order 13582 of August 17, 2011, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-24

    ... to Executive Order 13582 of August 17, 2011, ``Blocking Property of the Government of Syria and Prohibiting Certain Transactions With Respect to Syria'' AGENCY: Office of Foreign Assets Control, Treasury... Executive Order 13582 of August 17, 2011, ``Blocking Property of the Government of Syria and Prohibiting...

  6. 77 FR 49864 - Designation of One (1) Entity Pursuant to Executive Order 13582 of August 17, 2011, “Blocking...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-17

    ... to Executive Order 13582 of August 17, 2011, ``Blocking Property of the Government of Syria and Prohibiting Certain Transactions With Respect to Syria'' AGENCY: Office of Foreign Assets Control, Treasury... Executive Order 13582 of August 17, 2011, ``Blocking Property of the Government of Syria and Prohibiting...

  7. A Novel DEM Approach to Simulate Block Propagation on Forested Slopes

    NASA Astrophysics Data System (ADS)

    Toe, David; Bourrier, Franck; Dorren, Luuk; Berger, Frédéric

    2018-03-01

    In order to model rockfall on forested slopes, we developed a trajectory rockfall model based on the discrete element method (DEM). This model is able to take the complex mechanical processes at work during an impact into account (large deformations, complex contact conditions) and can explicitly simulate block/soil, block/tree contacts as well as contacts between neighbouring trees. In this paper, we describe the DEM model developed and we use it to assess the protective effect of different types of forest. In addition, we compared it with a more classical rockfall simulation model. The results highlight that forests can significantly reduce rockfall hazard and that the spatial structure of coppice forests has to be taken into account in rockfall simulations in order to avoid overestimating the protective role of these forest structures against rockfall hazard. In addition, the protective role of the forests is mainly influenced by the basal area. Finally, the advantages and limitations of the DEM model were compared with classical rockfall modelling approaches.

  8. Blocking and the detection of odor components in blends.

    PubMed

    Hosler, J S; Smith, B H

    2000-09-01

    Recent studies of olfactory blocking have revealed that binary odorant mixtures are not always processed as though they give rise to mixture-unique configural properties. When animals are conditioned to one odorant (A) and then conditioned to a mixture of that odorant with a second (X), the ability to learn or express the association of X with reinforcement appears to be reduced relative to animals that were not preconditioned to A. A recent model of odor-based response patterns in the insect antennal lobe predicts that the strength of the blocking effect will be related to the perceptual similarity between the two odorants, i.e. greater similarity should increase the blocking effect. Here, we test that model in the honeybee Apis mellifera by first establishing a generalization matrix for three odorants and then testing for blocking between all possible combinations of them. We confirm earlier findings demonstrating the occurrence of the blocking effect in olfactory learning of compound stimuli. We show that the occurrence and the strength of the blocking effect depend on the odorants used in the experiment. In addition, we find very good agreement between our results and the model, and less agreement between our results and an alternative model recently proposed to explain the effect.

  9. Role of Polyalanine Domains in -Sheet Formation in Spider Silk Block Copolymers

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Rabotyagova, O.; Cebe, P; Kaplan, D

    2010-01-01

    Genetically engineered spider silk-like block copolymers were studied to determine the influence of polyalanine domain size on secondary structure. The role of polyalanine block distribution on {beta}-sheet formation was explored using FT-IR and WAXS. The number of polyalanine blocks had a direct effect on the formation of crystalline {beta}-sheets, reflected in the change in crystallinity index as the blocks of polyalanines increased. WAXS analysis confirmed the crystalline nature of the sample with the largest number of polyalanine blocks. This approach provides a platform for further exploration of the role of specific amino acid chemistries in regulating the assembly of {beta}-sheetmore » secondary structures, leading to options to regulate material properties through manipulation of this key component in spider silks.« less

  10. GATG dendrimers and PEGylated block copolymers: from synthesis to bioapplications.

    PubMed

    Sousa-Herves, Ana; Novoa-Carballal, Ramon; Riguera, Ricardo; Fernandez-Megia, Eduardo

    2014-09-01

    Dendrimers are synthetic macromolecules composed of repetitive layers of branching units that emerge from a central core. They are characterized by a tunable size and precise number of peripheral groups which determine their physicochemical properties and function. Their high multivalency, functional surface, and globular architecture with diameters in the nanometer scale makes them ideal candidates for a wide range of applications. Gallic acid-triethylene glycol (GATG) dendrimers have attracted our attention as a promising platform in the biomedical field because of their high tunability and versatility. The presence of terminal azides in GATG dendrimers and poly(ethylene glycol) (PEG)-dendritic block copolymers allows their efficient functionalization with a variety of ligands of biomedical relevance including anionic and cationic groups, carbohydrates, peptides, or imaging agents. The resulting functionalized dendrimers have found application in drug and gene delivery, as antiviral agents and for the treatment of neurodegenerative diseases, in diagnosis and as tools to study multivalent carbohydrate recognition and dendrimer dynamics. Herein, we present an account on the preparation and recent applications of GATG dendrimers in these fields.

  11. Comparison of Gating Properties and Use-Dependent Block of Nav1.5 and Nav1.7 Channels by Anti-Arrhythmics Mexiletine and Lidocaine

    PubMed Central

    Wang, Ying; Mi, Jianxun; Lu, Ka; Lu, Yanxin; Wang, KeWei

    2015-01-01

    Mexiletine and lidocaine are widely used class IB anti-arrhythmic drugs that are considered to act by blocking voltage-gated open sodium currents for treatment of ventricular arrhythmias and relief of pain. To gain mechanistic insights into action of anti-arrhythmics, we characterized biophysical properties of Nav1.5 and Nav1.7 channels stably expressed in HEK293 cells and compared their use-dependent block in response to mexiletine and lidocaine using whole-cell patch clamp recordings. While the voltage-dependent activation of Nav1.5 or Nav1.7 was not affected by mexiletine and lidocaine, the steady-state fast and slow inactivation of Nav1.5 and Nav1.7 were significantly shifted to hyperpolarized direction by either mexiletine or lidocaine in dose-dependent manner. Both mexiletine and lidocaine enhanced the slow component of closed-state inactivation, with mexiletine exerting stronger inhibition on either Nav1.5 or Nav1.7. The recovery from inactivation of Nav1.5 or Nav1.7 was significantly prolonged by mexiletine compared to lidocaine. Furthermore, mexiletine displayed a pronounced and prominent use-dependent inhibition of Nav1.5 than lidocaine, but not Nav1.7 channels. Taken together, our findings demonstrate differential responses to blockade by mexiletine and lidocaine that preferentially affect the gating of Nav1.5, as compared to Nav1.7; and mexiletine exhibits stronger use-dependent block of Nav1.5. The differential gating properties of Nav1.5 and Nav1.7 in response to mexiletine and lidocaine may help explain the drug effectiveness and advance in new designs of safe and specific sodium channel blockers for treatment of cardiac arrhythmia or pain. PMID:26068619

  12. 77 FR 60177 - Unblocking of Two Specially Designated Nationals and Blocked Persons Pursuant to Executive Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-02

    ... Nationals and Blocked Persons (``SDN List'') of the individuals identified in this notice whose property and... from the SDN List the two individuals listed below, whose property and interests in property were...

  13. 36 CFR 1121.11 - Accounting of disclosures.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Accounting of disclosures... COMPLIANCE BOARD PRIVACY ACT IMPLEMENTATION § 1121.11 Accounting of disclosures. (a) The Board shall, except... an accurate accounting of— (1) The date, nature and purpose of each disclosure of a record to any...

  14. 7 CFR 3200.9 - Accountability and record keeping.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 15 2010-01-01 2010-01-01 false Accountability and record keeping. 3200.9 Section... TRANSFER OF EXCESS PERSONAL PROPERTY § 3200.9 Accountability and record keeping. USDA requires that Federal... accountability and record keeping systems. ...

  15. Blocking a Redundant Cue: What does it say about preschoolers’ causal competence?

    PubMed Central

    Kloos, Heidi; Sloutsky, Vladimir M.

    2013-01-01

    The current study investigates the degree to which preschoolers can engage in causal inferences in blocking paradigm, a paradigm in which a cue is consistently linked with a target, either alone (A-T) or paired with another cue (AB-T). Unlike previous blocking studies with preschoolers, we manipulated the causal structure of the events without changing the specific contingencies. In particular, cues were said to be either potential causes (prediction condition), or they were said to be potential effects (diagnosis condition). The causally appropriate inference is to block the redundant cue B when it is a potential cause of the target, but not when it is a potential effect. Findings show a stark difference in performance between preschoolers and adults: While adults blocked the redundant cue only in the prediction condition, children blocked the redundant cue indiscriminately across both conditions. Therefore, children, but not adults ignored the causal structure of the events. These findings challenge a developmental account that attributes sophisticated machinery of causal reasoning to young children. PMID:24033577

  16. Evaluation of a blocking ELISA for the detection of antibodies against Lawsonia intracellularis in pig sera.

    PubMed

    Jacobson, Magdalena; Wallgren, Per; Nordengrahn, Ann; Merza, Malik; Emanuelson, Ulf

    2011-04-01

    Lawsonia intracellularis is a common cause of chronic diarrhoea and poor performance in young growing pigs. Diagnosis of this obligate intracellular bacterium is based on the demonstration of the microbe or microbial DNA in tissue specimens or faecal samples, or the demonstration of L. intracellularis-specific antibodies in sera. The aim of the present study was to evaluate a blocking ELISA in the detection of serum antibodies to L. intracellularis, by comparison to the previously widely used immunofluorescent antibody test (IFAT). Sera were collected from 176 pigs aged 8-12 weeks originating from 24 herds with or without problems with diarrhoea and poor performance in young growing pigs. Sera were analyzed by the blocking ELISA and by IFAT. Bayesian modelling techniques were used to account for the absence of a gold standard test and the results of the blocking ELISA was modelled against the IFAT test with a "2 dependent tests, 2 populations, no gold standard" model. At the finally selected cut-off value of percent inhibition (PI) 35, the diagnostic sensitivity of the blocking ELISA was 72% and the diagnostic specificity was 93%. The positive predictive value was 0.82 and the negative predictive value was 0.89, at the observed prevalence of 33.5%. The sensitivity and specificity as evaluated by Bayesian statistic techniques differed from that previously reported. Properties of diagnostic tests may well vary between countries, laboratories and among populations of animals. In the absence of a true gold standard, the importance of validating new methods by appropriate statistical methods and with respect to the target population must be emphasized.

  17. Integrated Assessment of Behavioral and Environmental Risk Factors for Lyme Disease Infection on Block Island, Rhode Island

    PubMed Central

    Krause, Peter J.; Niccolai, Linda; Steeves, Tanner; O’Keefe, Corrine Folsom; Diuk-Wasser, Maria A.

    2014-01-01

    Peridomestic exposure to Borrelia burgdorferi-infected Ixodes scapularis nymphs is considered the dominant means of infection with black-legged tick-borne pathogens in the eastern United States. Population level studies have detected a positive association between the density of infected nymphs and Lyme disease incidence. At a finer spatial scale within endemic communities, studies have focused on individual level risk behaviors, without accounting for differences in peridomestic nymphal density. This study simultaneously assessed the influence of peridomestic tick exposure risk and human behavior risk factors for Lyme disease infection on Block Island, Rhode Island. Tick exposure risk on Block Island properties was estimated using remotely sensed landscape metrics that strongly correlated with tick density at the individual property level. Behavioral risk factors and Lyme disease serology were assessed using a longitudinal serosurvey study. Significant factors associated with Lyme disease positive serology included one or more self-reported previous Lyme disease episodes, wearing protective clothing during outdoor activities, the average number of hours spent daily in tick habitat, the subject’s age and the density of shrub edges on the subject’s property. The best fit multivariate model included previous Lyme diagnoses and age. The strength of this association with previous Lyme disease suggests that the same sector of the population tends to be repeatedly infected. The second best multivariate model included a combination of environmental and behavioral factors, namely hours spent in vegetation, subject’s age, shrub edge density (increase risk) and wearing protective clothing (decrease risk). Our findings highlight the importance of concurrent evaluation of both environmental and behavioral factors to design interventions to reduce the risk of tick-borne infections. PMID:24416278

  18. Integrated assessment of behavioral and environmental risk factors for Lyme disease infection on Block Island, Rhode Island.

    PubMed

    Finch, Casey; Al-Damluji, Mohammed Salim; Krause, Peter J; Niccolai, Linda; Steeves, Tanner; O'Keefe, Corrine Folsom; Diuk-Wasser, Maria A

    2014-01-01

    Peridomestic exposure to Borrelia burgdorferi-infected Ixodes scapularis nymphs is considered the dominant means of infection with black-legged tick-borne pathogens in the eastern United States. Population level studies have detected a positive association between the density of infected nymphs and Lyme disease incidence. At a finer spatial scale within endemic communities, studies have focused on individual level risk behaviors, without accounting for differences in peridomestic nymphal density. This study simultaneously assessed the influence of peridomestic tick exposure risk and human behavior risk factors for Lyme disease infection on Block Island, Rhode Island. Tick exposure risk on Block Island properties was estimated using remotely sensed landscape metrics that strongly correlated with tick density at the individual property level. Behavioral risk factors and Lyme disease serology were assessed using a longitudinal serosurvey study. Significant factors associated with Lyme disease positive serology included one or more self-reported previous Lyme disease episodes, wearing protective clothing during outdoor activities, the average number of hours spent daily in tick habitat, the subject's age and the density of shrub edges on the subject's property. The best fit multivariate model included previous Lyme diagnoses and age. The strength of this association with previous Lyme disease suggests that the same sector of the population tends to be repeatedly infected. The second best multivariate model included a combination of environmental and behavioral factors, namely hours spent in vegetation, subject's age, shrub edge density (increase risk) and wearing protective clothing (decrease risk). Our findings highlight the importance of concurrent evaluation of both environmental and behavioral factors to design interventions to reduce the risk of tick-borne infections.

  19. Deciphering the Effect of Polymer-Assisted Doping on the Optoelectronic Properties of Block Copolymer-Anchored Graphene Oxide.

    PubMed

    Maity, Nabasmita; Kuila, Atanu; Nandi, Arun K

    2017-02-14

    Doping facilitates the tuning of band gap, providing an opportunity to tailor the optoelectronic properties of graphene in a simple way, and polymer-assisted doping is a new route to combine the optoelectronic properties of graphene with the properties of a polymer. In this endeavor, a linear diblock copolymer, polycaprolactone-block-poly(dimethyl aminoethyl methacrylate) (PCL 13 -b-PDMAEMA 117 ) (GPCLD) is grafted from the graphene oxide (GO) surface via consecutive ring opening and atom transfer radical polymerization. GPCLD is characterized using proton nuclear magnetic resonance ( 1 H NMR), Fourier transform infrared spectroscopy, atomic force microscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy, and Raman spectroscopy. The phase transition behavior of the GPCLD solution with varying temperature and pH is monitored using fluorescence spectroscopy and dynamic light scattering. Temperature-dependent 1 H NMR spectra at pH 9.2 indicate the influence of temperature on the interaction between GPCLD and solvent (water) molecules causing the phase separation. Fluorescence spectra at pH 4 and 9.2 give the evidence of localized p- and n-type doping of graphene assisted by the pendent PDMAEMA chains. In the impedance spectra of GPCLD films, the Nyquist plots vary with pH; at pH 4, they exhibit a semicircle at higher frequencies and a spike at lower frequencies; at pH 7.0, the spike is replaced by an arc; and at pH 9.2, the semicircle at higher frequencies vanishes and only a spike is noticed, all of these suggesting different types of doping of graphene at different pH values. The dc-conductivity also varies with pH and temperature because of the different types of doping. The current (I)-voltage (V) property of GPCLD at different pH values is very unique: at pH 9.2, an interesting feature of negative differential resistance (NDR) is observed; at pH 7, the rectification property is observed; and at pH 4, again the NDR property is observed. The

  20. 31 CFR 585.526 - Authorization for release of certain blocked transfers by U.S. financial institutions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... blocked transfers by U.S. financial institutions. 585.526 Section 585.526 Money and Finance: Treasury... institutions. (a) U.S. financial institutions are authorized to unblock and return to the remitting party funds... were not destined for an account on the books of a U.S. financial institution, which account was...

  1. Mechanical Testing of IN718 Lattice Block Structures

    NASA Technical Reports Server (NTRS)

    Krause, David L.; Whittenberger, John D.; Kantzos, Pete T.; Hebsur, Mohan G.

    2002-01-01

    Lattice block construction produces a flat, structurally rigid panel composed of thin ligaments of material arranged in a three-dimensional triangulated truss-like structure. Low-cost methods of producing cast metallic lattice block panels are now available that greatly expand opportunities for using this unique material system in today's high-performance structures. Additional advances are being made in NASA's Ultra Efficient Engine Technology (UEET) program to extend the lattice block concept to superalloy materials. Advantages offered by this combination include high strength, light weight, high stiffness, and elevated temperature capabilities. Recently under UEET, the nickel-based superalloy Inconel 718 (IN718) was investment cast into lattice block panels with great success. To evaluate casting quality and lattice block architecture merit, individual ligaments, and structural subelement specimens were extracted from the panels. Tensile tests, structural compression, and bending strength tests were performed on these specimens. Fatigue testing was also completed for several bend test specimens. This paper first presents metallurgical and optical microscopy analysis of the castings. This is followed by mechanical test results for the tensile ligament tests and the subelement compression and bending strength tests, as well as for the fatigue tests that were performed. These tests generally showed comparable properties to base IN718 with the same heat treatment, and they underscored the benefits offered by lattice block materials. These benefits might be extended with improved architecture such as face sheets.

  2. Flexible strategy for immobilizing redox-active compounds using in situ generation of diazonium salts. Investigations of the blocking and catalytic properties of the layers.

    PubMed

    Noël, Jean-Marc; Sjöberg, Béatrice; Marsac, Rémi; Zigah, Dodzi; Bergamini, Jean-François; Wang, Aifang; Rigaut, Stéphane; Hapiot, Philippe; Lagrost, Corinne

    2009-11-03

    A versatile two-step method is developed to covalently immobilize redox-active molecules onto carbon surfaces. First, a robust anchoring platform is grafted onto surfaces by electrochemical reduction of aryl diazonium salts in situ generated. Depending on the nature of the layer termini, -COOH or -NH(2), a further chemical coupling involving ferrocenemethylamine or ferrocene carboxylic acid derivatives leads to the covalent binding of ferrocene centers. The chemical strategy using acyl chloride activation is efficient and flexible, since it can be applied either to surface-reactive end groups or to reactive species in solution. Cyclic voltammetry analyses point to the covalent binding of ferrocene units restricted to the upper layers of the underlying aryl films, while AFM measurements show a lost of compactness of the layers after the chemical attachment of ferrocene centers. The preparation conditions of the anchoring layers were found to determine the interfacial properties of the resulted ferrocenyl-modified electrodes. The ferrocene units promoted effective redox mediation providing that the free redox probes are adequately chosen (i.e., vs size/formal potential) and the underlying layers exhibit strong blocking properties. For anchoring films with weaker blocking effect, the coexistence of two distinct phenomena, redox mediation and ET at pinholes could be evidenced.

  3. 47 CFR 36.354 - Access expenses-Account 6540.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... JURISDICTIONAL SEPARATIONS PROCEDURES; STANDARD PROCEDURES FOR SEPARATING TELECOMMUNICATIONS PROPERTY COSTS... Network Operations Expenses § 36.354 Access expenses—Account 6540. (a) This account includes access...

  4. Population Blocks.

    ERIC Educational Resources Information Center

    Smith, Martin H.

    1992-01-01

    Describes an educational game called "Population Blocks" that is designed to illustrate the concept of exponential growth of the human population and some potential effects of overpopulation. The game material consists of wooden blocks; 18 blocks are painted green (representing land), 7 are painted blue (representing water); and the remaining…

  5. Blocking Losses With a Photon Counter

    NASA Technical Reports Server (NTRS)

    Moision, Burce E.; Piazzolla, Sabino

    2012-01-01

    It was not known how to assess accurately losses in a communications link due to photodetector blocking, a phenomenon wherein a detector is rendered inactive for a short time after the detection of a photon. When used to detect a communications signal, blocking leads to losses relative to an ideal detector, which may be measured as a reduction in the communications rate for a given received signal power, or an increase in the signal power required to support the same communications rate. This work involved characterizing blocking losses for single detectors and arrays of detectors. Blocking may be mitigated by spreading the signal intensity over an array of detectors, reducing the count rate on any one detector. A simple approximation was made to the blocking loss as a function of the probability that a detector is unblocked at a given time, essentially treating the blocking probability as a scaling of the detection efficiency. An exact statistical characterization was derived for a single detector, and an approximation for multiple detectors. This allowed derivation of several accurate approximations to the loss. Methods were also derived to account for a rise time in recovery, and non-uniform illumination due to diffraction and atmospheric distortion of the phase front. It was assumed that the communications signal is intensity modulated and received by an array of photon-counting photodetectors. For the purpose of this analysis, it was assumed that the detectors are ideal, in that they produce a signal that allows one to reproduce the arrival times of electrons, produced either as photoelectrons or from dark noise, exactly. For single detectors, the performance of the maximum-likelihood (ML) receiver in blocking is illustrated, as well as a maximum-count (MC) receiver, that, when receiving a pulse-position-modulated (PPM) signal, selects the symbol corresponding to the slot with the largest electron count. Whereas the MC receiver saturates at high count rates

  6. Synthesis, characterization, and property of biodegradable PEG-PCL-PLA terpolymers with miktoarm star and triblock architectures as drug carriers.

    PubMed

    Zhang, Yixin; Luo, Song; Liang, Yan; Zhang, Hai; Peng, Xinyu; He, Bin; Li, Sai

    2018-03-01

    A series of amphiphilic terpolymers with miktoarm star and triblock architectures of poly(ethylene glycol) (PEG), poly(ε-caprolactone) (PCL) and poly(l-lactide acid) (PLLA) or poly(DL-lactide acid) (PDLLA) terpolymers were synthesized as carriers for drug delivery. The architecture, molecular weight and crystallization behavior of the terpolymers were characterized. Anticancer drug doxorubicin was encapsulated in the micelles to investigate their drug loading properties. The miktoarm star terpolymers exhibited stronger crystallization capability, smaller size and better stability than that of triblock polymeric micelle, owing to the lower CMC values of miktoarm star polymeric micelle. Furthermore, the drug-loaded miktoarm star polymeric micelles showed the cumulative DOX release account of the micelles with PDLLA blocks was 65.3% while the release account of the corresponding micelles containing PLLA blocks was 45.2%. The IC 50 values of drug-loaded miktoarm star polymeric micelle were lower than triblock polymeric micelle. Meanwhile, Confocal laser scanning microscopy (CLSM) and Flow Cytometry results demonstrated that the miktoarm star micelles were more favorable for cellular internalization. The miktoarm star micelles with PDLLA blocks were promising carriers for anticancer drug delivery.

  7. 47 CFR 32.2000 - Instructions for telecommunications plant accounts.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... accounting company, shall be accounted for at original cost, except that property, plant and equipment... less than $100,000 for Class A companies or $25,000 for Class B companies. (2) The accounting for... accounting for construction costs, the utility shall charge to the telecommunications plant accounts, where...

  8. View of cell block eight (left), cell block seven, and ...

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

    View of cell block eight (left), cell block seven, and southwest guard tower, looking from cell block eight roof - Eastern State Penitentiary, 2125 Fairmount Avenue, Philadelphia, Philadelphia County, PA

  9. Cell block eleven (left) and cell block fifteen, looking from ...

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

    Cell block eleven (left) and cell block fifteen, looking from cell block two into the "Death Row" exercise yard - Eastern State Penitentiary, 2125 Fairmount Avenue, Philadelphia, Philadelphia County, PA

  10. Osmosis and thermodynamics explained by solute blocking.

    PubMed

    Nelson, Peter Hugo

    2017-01-01

    A solute-blocking model is presented that provides a kinetic explanation of osmosis and ideal solution thermodynamics. It validates a diffusive model of osmosis that is distinct from the traditional convective flow model of osmosis. Osmotic equilibrium occurs when the fraction of water molecules in solution matches the fraction of pure water molecules that have enough energy to overcome the pressure difference. Solute-blocking also provides a kinetic explanation for why Raoult's law and the other colligative properties depend on the mole fraction (but not the size) of the solute particles, resulting in a novel kinetic explanation for the entropy of mixing and chemical potential of ideal solutions. Some of its novel predictions have been confirmed; others can be tested experimentally or by simulation.

  11. Osmosis and thermodynamics explained by solute blocking

    PubMed Central

    Nelson, Peter Hugo

    2016-01-01

    A solute-blocking model is presented that provides a kinetic explanation of osmosis and ideal solution thermodynamics. It validates a diffusive model of osmosis that is distinct from the traditional convective flow model of osmosis. Osmotic equilibrium occurs when the fraction of water molecules in solution matches the fraction of pure water molecules that have enough energy to overcome the pressure difference. Solute-blocking also provides a kinetic explanation for why Raoult’s law and the other colligative properties depend on the mole fraction (but not the size) of the solute particles, resulting in a novel kinetic explanation for the entropy of mixing and chemical potential of ideal solutions. Some of its novel predictions have been confirmed, others can be tested experimentally or by simulation. PMID:27225298

  12. Aripiprazole blocks reinstatement of cocaine seeking in an animal model of relapse.

    PubMed

    Feltenstein, Matthew W; Altar, C Anthony; See, Ronald E

    2007-03-01

    Aripiprazole (Abilify) is an atypical antipsychotic drug primarily characterized by partial agonist activity at dopamine (DA) D2 receptors and low side effects. Based on pharmacologic properties that include a stabilization of mesocorticolimbic DA activity, a pathway implicated in addiction, aripiprazole was tested for its ability to prevent relapse to cocaine seeking in rats. We assessed the dose-dependent effects of aripiprazole on conditioned cue-induced and cocaine-primed reinstatement of drug-seeking behavior following chronic intravenous cocaine self-administration in an animal model of relapse. Aripiprazole potently and dose-dependently attenuated responding on the previously cocaine-paired lever during both reinstatement conditions, with slightly greater efficacy at reducing conditioned-cued reinstatement. Aripiprazole was effective at doses that failed to alter cocaine self-administration, food self-administration, reinstatement of food-seeking behavior, or basal locomotor activity, suggesting selective effects of aripiprazole on motivated drug-seeking behavior. These results in a relapse model show that aripiprazole can block cocaine seeking without affecting other behaviors. The D2 partial agonist properties of aripiprazole likely account for the blockade of reinstatement of cocaine-seeking behavior. Given its established efficacy and tolerability as a treatment for psychosis, aripiprazole may be an excellent therapeutic choice for reducing craving and preventing relapse in people with cocaine dependency.

  13. Revisiting the blocking force test on ferroelectric ceramics using high energy x-ray diffraction

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Daniel, L., E-mail: laurent.daniel@u-psud.fr; GeePs; Hall, D. A.

    2015-05-07

    The blocking force test is a standard test to characterise the properties of piezoelectric actuators. The aim of this study is to understand the various contributions to the macroscopic behaviour observed during this experiment that involves the intrinsic piezoelectric effect, ferroelectric domain switching, and internal stress development. For this purpose, a high energy diffraction experiment is performed in-situ during a blocking force test on a tetragonal lead zirconate titanate (PZT) ceramic (Pb{sub 0.98}Ba{sub 0.01}(Zr{sub 0.51}Ti{sub 0.49}){sub 0.98}Nb{sub 0.02}O{sub 3}). It is shown that the usual macroscopic linear interpretation of the test can also be performed at the single crystal scale,more » allowing the identification of local apparent piezoelectric and elastic properties. It is also shown that despite this apparent linearity, the blocking force test involves significant non-linear behaviour mostly due to domain switching under electric field and stress. Although affecting a limited volume fraction of the material, domain switching is responsible for a large part of the macroscopic strain and explains the high level of inter- and intra-granular stresses observed during the course of the experiment. The study shows that if apparent piezoelectric and elastic properties can be identified for PZT single crystals from blocking stress curves, they may be very different from the actual properties of polycrystalline materials due to the multiplicity of the physical mechanisms involved. These apparent properties can be used for macroscopic modelling purposes but should be considered with caution if a local analysis is aimed at.« less

  14. Polymeric micelles based on poly(methacrylic acid) block-containing copolymers with different membrane destabilizing properties for cellular drug delivery.

    PubMed

    Mebarek, Naila; Aubert-Pouëssel, Anne; Gérardin, Corine; Vicente, Rita; Devoisselle, Jean-Marie; Bégu, Sylvie

    2013-10-01

    Poly(methacrylic acid)-b-poly(ethylene oxide) are double hydrophilic block copolymers, which are able to form micelles by complexation with a counter-polycation, such as poly-l-lysine. A study was carried out on the ability of the copolymers to interact with model membranes as a function of their molecular weights and as a function of pH. Different behaviors were observed: high molecular weight copolymers respect the membrane integrity, whereas low molecular weight copolymers with a well-chosen asymmetry degree can induce a membrane alteration. Hence by choosing the appropriate molecular weight, micelles with distinct membrane interaction behaviors can be obtained leading to different intracellular traffics with or without endosomal escape, making them interesting tools for cell engineering. Especially micelles constituted of low molecular weight copolymers could exhibit the endosomal escape property, which opens vast therapeutic applications. Moreover micelles possess a homogeneous nanometric size and show variable properties of disassembly at acidic pH, of stability in physiological conditions, and finally of cyto-tolerance. Copyright © 2013 Elsevier B.V. All rights reserved.

  15. Processing of IN-718 Lattice Block Castings

    NASA Technical Reports Server (NTRS)

    Hebsur, Mohan G.

    2002-01-01

    Recently a low cost casting method known as lattice block casting has been developed by JAM Corporation, Wilmington, Massachusetts for engineering materials such as aluminum and stainless steels that has shown to provide very high stiffness and strength with only a fraction of density of the alloy. NASA Glenn Research Center has initiated research to investigate lattice block castings of high temperature Ni-base superalloys such as the model system Inconel-718 (IN-718) for lightweight nozzle applications. Although difficulties were encountered throughout the manufacturing process , a successful investment casting procedure was eventually developed. Wax formulation and pattern assembly, shell mold processing, and counter gravity casting techniques were developed. Ten IN-718 lattice block castings (each measuring 15-cm wide by 30-cm long by 1.2-cm thick) have been successfully produced by Hitchiner Gas Turbine Division, Milford, New Hampshire, using their patented counter gravity casting techniques. Details of the processing and resulting microstructures are discussed in this paper. Post casting processing and evaluation of system specific mechanical properties of these specimens are in progress.

  16. Use of wastes derived from earthquakes for the production of concrete masonry partition wall blocks.

    PubMed

    Xiao, Zhao; Ling, Tung-Chai; Kou, Shi-Cong; Wang, Qingyuan; Poon, Chi-Sun

    2011-08-01

    Utilization of construction and demolition (C&D) wastes as recycled aggregates in the production of concrete and concrete products have attracted much attention in recent years. However, the presence of large quantities of crushed clay brick in some the C&D waste streams (e.g. waste derived collapsed masonry buildings after an earthquake) renders the recycled aggregates unsuitable for high grade use. One possibility is to make use of the low grade recycled aggregates for concrete block production. In this paper, we report the results of a comprehensive study to assess the feasibility of using crushed clay brick as coarse and fine aggregates in concrete masonry block production. The effects of the content of crushed coarse and fine clay brick aggregates (CBA) on the mechanical properties of non-structural concrete block were quantified. From the experimental test results, it was observed that incorporating the crushed clay brick aggregates had a significant influence on the properties of blocks. The hardened density and drying shrinkage of the block specimens decreased with an increase in CBA content. The use of CBA increased the water absorption of block specimens. The results suggested that the amount of crushed clay brick to be used in concrete masonry blocks should be controlled at less than 25% (coarse aggregate) and within 50-75% for fine aggregates. Copyright © 2011 Elsevier Ltd. All rights reserved.

  17. Field-theoretic simulations of block copolymer nanocomposites in a constant interfacial tension ensemble.

    PubMed

    Koski, Jason P; Riggleman, Robert A

    2017-04-28

    Block copolymers, due to their ability to self-assemble into periodic structures with long range order, are appealing candidates to control the ordering of functionalized nanoparticles where it is well-accepted that the spatial distribution of nanoparticles in a polymer matrix dictates the resulting material properties. The large parameter space associated with block copolymer nanocomposites makes theory and simulation tools appealing to guide experiments and effectively isolate parameters of interest. We demonstrate a method for performing field-theoretic simulations in a constant volume-constant interfacial tension ensemble (nVγT) that enables the determination of the equilibrium properties of block copolymer nanocomposites, including when the composites are placed under tensile or compressive loads. Our approach is compatible with the complex Langevin simulation framework, which allows us to go beyond the mean-field approximation. We validate our approach by comparing our nVγT approach with free energy calculations to determine the ideal domain spacing and modulus of a symmetric block copolymer melt. We analyze the effect of numerical and thermodynamic parameters on the efficiency of the nVγT ensemble and subsequently use our method to investigate the ideal domain spacing, modulus, and nanoparticle distribution of a lamellar forming block copolymer nanocomposite. We find that the nanoparticle distribution is directly linked to the resultant domain spacing and is dependent on polymer chain density, nanoparticle size, and nanoparticle chemistry. Furthermore, placing the system under tension or compression can qualitatively alter the nanoparticle distribution within the block copolymer.

  18. Structural implications of weak Ca2+ block in Drosophila cyclic nucleotide-gated channels.

    PubMed

    Lam, Yee Ling; Zeng, Weizhong; Derebe, Mehabaw Getahun; Jiang, Youxing

    2015-09-01

    Calcium permeability and the concomitant calcium block of monovalent ion current ("Ca(2+) block") are properties of cyclic nucleotide-gated (CNG) channel fundamental to visual and olfactory signal transduction. Although most CNG channels bear a conserved glutamate residue crucial for Ca(2+) block, the degree of block displayed by different CNG channels varies greatly. For instance, the Drosophila melanogaster CNG channel shows only weak Ca(2+) block despite the presence of this glutamate. We previously constructed a series of chimeric channels in which we replaced the selectivity filter of the bacterial nonselective cation channel NaK with a set of CNG channel filter sequences and determined that the resulting NaK2CNG chimeras displayed the ion selectivity and Ca(2+) block properties of the parent CNG channels. Here, we used the same strategy to determine the structural basis of the weak Ca(2+) block observed in the Drosophila CNG channel. The selectivity filter of the Drosophila CNG channel is similar to that of most other CNG channels except that it has a threonine at residue 318 instead of a proline. We constructed a NaK chimera, which we called NaK2CNG-Dm, which contained the Drosophila selectivity filter sequence. The high resolution structure of NaK2CNG-Dm revealed a filter structure different from those of NaK and all other previously investigated NaK2CNG chimeric channels. Consistent with this structural difference, functional studies of the NaK2CNG-Dm chimeric channel demonstrated a loss of Ca(2+) block compared with other NaK2CNG chimeras. Moreover, mutating the corresponding threonine (T318) to proline in Drosophila CNG channels increased Ca(2+) block by 16 times. These results imply that a simple replacement of a threonine for a proline in Drosophila CNG channels has likely given rise to a distinct selectivity filter conformation that results in weak Ca(2+) block. © 2015 Lam et al.

  19. 18 CFR 367.3920 - Account 392, Transportation equipment.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ..., Transportation equipment. 367.3920 Section 367.3920 Conservation of Power and Water Resources FEDERAL ENERGY... GAS ACT Service Company Property Chart of Accounts § 367.3920 Account 392, Transportation equipment. (a) This account must include the cost of transportation vehicles used for service company purposes...

  20. 18 CFR 367.3920 - Account 392, Transportation equipment.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ..., Transportation equipment. 367.3920 Section 367.3920 Conservation of Power and Water Resources FEDERAL ENERGY... GAS ACT Service Company Property Chart of Accounts § 367.3920 Account 392, Transportation equipment. (a) This account must include the cost of transportation vehicles used for service company purposes...

  1. 18 CFR 367.3920 - Account 392, Transportation equipment.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ..., Transportation equipment. 367.3920 Section 367.3920 Conservation of Power and Water Resources FEDERAL ENERGY... GAS ACT Service Company Property Chart of Accounts § 367.3920 Account 392, Transportation equipment. (a) This account must include the cost of transportation vehicles used for service company purposes...

  2. Block LU factorization

    NASA Technical Reports Server (NTRS)

    Demmel, James W.; Higham, Nicholas J.; Schreiber, Robert S.

    1992-01-01

    Many of the currently popular 'block algorithms' are scalar algorithms in which the operations have been grouped and reordered into matrix operations. One genuine block algorithm in practical use is block LU factorization, and this has recently been shown by Demmel and Higham to be unstable in general. It is shown here that block LU factorization is stable if A is block diagonally dominant by columns. Moreover, for a general matrix the level of instability in block LU factorization can be founded in terms of the condition number kappa(A) and the growth factor for Gaussian elimination without pivoting. A consequence is that block LU factorization is stable for a matrix A that is symmetric positive definite or point diagonally dominant by rows or columns as long as A is well-conditioned.

  3. Block Transfer Handbook: Constructing and Negotiating Block Transfer Agreements.

    ERIC Educational Resources Information Center

    Finlay, Finola

    The purpose of this handbook is to provide resources for institutions or articulation committees who are engaged in the task of investigating the feasibility of block transfer agreements. Block transfer is the process whereby a block of credits is granted to students who have successfully completed a certificate, diploma, or cluster of courses…

  4. 15 CFR 744.22 - Restrictions on exports, reexports and transfers to persons whose property and interests in...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310..., reexports, and transfers to persons whose property and interests in property are blocked pursuant to...

  5. 15 CFR 744.22 - Restrictions on exports, reexports and transfers to persons whose property and interests in...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310..., reexports, and transfers to persons whose property and interests in property are blocked pursuant to...

  6. 15 CFR 744.22 - Restrictions on exports, reexports and transfers to persons whose property and interests in...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310..., reexports, and transfers to persons whose property and interests in property are blocked pursuant to...

  7. 15 CFR 744.22 - Restrictions on exports, reexports and transfers to persons whose property and interests in...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310..., reexports, and transfers to persons whose property and interests in property are blocked pursuant to...

  8. 15 CFR 744.22 - Restrictions on exports, reexports and transfers to persons whose property and interests in...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310... transfers to persons whose property and interests in property are blocked pursuant to Executive Orders 13310..., reexports, and transfers to persons whose property and interests in property are blocked pursuant to...

  9. Rock magnetic properties estimated from coercivity - blocking temperature diagram: application to recent volcanic rocks

    NASA Astrophysics Data System (ADS)

    Terada, T.; Sato, M.; Mochizuki, N.; Yamamoto, Y.; Tsunakawa, H.

    2013-12-01

    Magnetic properties of ferromagnetic minerals generally depend on their chemical composition, crystal structure, size, and shape. In the usual paleomagnetic study, we use a bulk sample which is the assemblage of magnetic minerals showing broad distributions of various magnetic properties. Microscopic and Curie-point observations of the bulk sample enable us to identify the constituent magnetic minerals, while other measurements, for example, stepwise thermal and/or alternating field demagnetizations (ThD, AFD) make it possible to estimate size, shape and domain state of the constituent magnetic grains. However, estimation based on stepwise demagnetizations has a limitation that magnetic grains with the same coercivity Hc (or blocking temperature Tb) can be identified as the single population even though they could have different size and shape. Dunlop and West (1969) carried out mapping of grain size and coercivity (Hc) using pTRM. However, it is considered that their mapping method is basically applicable to natural rocks containing only SD grains, since the grain sizes are estimated on the basis of the single domain theory (Neel, 1949). In addition, it is impossible to check thermal alteration due to laboratory heating in their experiment. In the present study we propose a new experimental method which makes it possible to estimate distribution of size and shape of magnetic minerals in a bulk sample. The present method is composed of simple procedures: (1) imparting ARM to a bulk sample, (2) ThD at a certain temperature, (3) stepwise AFD on the remaining ARM, (4) repeating the steps (1) ~ (3) with ThD at elevating temperatures up to the Curie temperature of the sample. After completion of the whole procedures, ARM spectra are calculated and mapped on the HC-Tb plane (hereafter called HC-Tb diagram). We analyze the Hc-Tb diagrams as follows: (1) For uniaxial SD populations, theoretical curve for a certain grain size (or shape anisotropy) is drawn on the Hc

  10. Perpendicularly Aligned, Anion Conducting Nanochannels in Block Copolymer Electrolyte Films

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Arges, Christopher G.; Kambe, Yu; Suh, Hyo Seon

    Connecting structure and morphology to bulk transport properties, such as ionic conductivity, in nanostructured polymer electrolyte materials is a difficult proposition because of the challenge to precisely and accurately control order and the orientation of the ionic domains in such polymeric films. In this work, poly(styrene-block-2-vinylpyridine) (PSbP2VP) block copolymers were assembled perpendicularly to a substrate surface over large areas through chemical surface modification at the substrate and utilizing a versatile solvent vapor annealing (SVA) technique. After block copolymer assembly, a novel chemical vapor infiltration reaction (CVIR) technique selectively converted the 2-vinylpyridine block to 2-vinyl n-methylpyridinium (NMP+ X-) groups, which aremore » anion charge carriers. The prepared block copolymer electrolytes maintained their orientation and ordered nanostructure upon the selective introduction of ion moieties into the P2VP block and post ion-exchange to other counterion forms (X- = chloride, hydroxide, etc.). The prepared block copolymer electrolyte films demonstrated high chloride ion conductivities, 45 mS cm(-1) at 20 degrees C in deionized water, the highest chloride ion conductivity for anion conducting polymer electrolyte films. Additionally, straight-line lamellae of block copolymer electrolytes were realized using chemoepitaxy and density multiplication. The devised scheme allowed for precise and accurate control of orientation of ionic domains in nanostructured polymer electrolyte films and enables a platform for future studies that examines the relationship between polymer electrolyte structure and ion transport.« less

  11. Microbial production of polyhydroxyalkanoate block copolymer by recombinant Pseudomonas putida.

    PubMed

    Li, Shi Yan; Dong, Cui Ling; Wang, Shen Yu; Ye, Hai Mu; Chen, Guo-Qiang

    2011-04-01

    Polyhydroxyalkanoate (PHA) synthesis genes phaPCJ(Ac) cloned from Aeromonas caviae were transformed into Pseudomonas putida KTOY06ΔC, a mutant of P. putida KT2442, resulting in the ability of the recombinant P. putida KTOY06ΔC (phaPCJ(A.c)) to produce a short-chain-length and medium-chain-length PHA block copolymer consisting of poly-3-hydroxybutyrate (PHB) as one block and random copolymer of 3-hydroxyvalerate (3HV) and 3-hydroxyheptanoate (3HHp) as another block. The novel block polymer was studied by differential scanning calorimetry (DSC), nuclear magnetic resonance, and rheology measurements. DSC studies showed the polymer to possess two glass transition temperatures (T(g)), one melting temperature (T(m)) and one cool crystallization temperature (T(c)). Rheology studies clearly indicated a polymer chain re-arrangement in the copolymer; these studies confirmed the polymer to be a block copolymer, with over 70 mol% homopolymer (PHB) of 3-hydroxybutyrate (3HB) as one block and around 30 mol% random copolymers of 3HV and 3HHp as the second block. The block copolymer was shown to have the highest tensile strength and Young's modulus compared with a random copolymer with similar ratio and a blend of homopolymers PHB and PHVHHp with similar ratio. Compared with other commercially available PHA including PHB, PHBV, PHBHHx, and P3HB4HB, the short-chain- and medium-chain-length block copolymer PHB-b-PHVHHp showed differences in terms of mechanical properties and should draw more attentions from the PHA research community. © Springer-Verlag 2010

  12. High-Performance Polymer Solar Cell with Single Active Material of Fully Conjugated Block Copolymer Composed of Wide-Band gap Donor and Narrow-Band gap Acceptor Blocks.

    PubMed

    Lee, Ji Hyung; Park, Chang Geun; Kim, Aesun; Kim, Hyung Jong; Kim, Youngseo; Park, Sungnam; Cho, Min Ju; Choi, Dong Hoon

    2018-06-06

    We synthesized a novel fully conjugated block copolymer, P3, in which a wide-band gap donor block (P1) was connected to a narrow-band gap acceptor block (P2). As P3 contains P1 block with a wide bandgap and P2 block with a narrow bandgap, it exhibits a very wide complementary absorption. Transient photoluminescence measurement using P3 dilute solution demonstrated intramolecular charge transfer between the P1 block and the P2 block, which was not observed in a P1/P2 blend solution. A P3 thin film showed complete PL quenching because the photoinduced inter-/intramolecular charge transfer states were effectively formed. This phenomenon can play an important role in the photovoltaic properties of P3-based polymer solar cells. A single active material polymer solar cell (SAMPSC) fabricated from P3 alone exhibited a high power conversion efficiency (PCE) of 3.87% with a high open-circuit voltage of 0.93 V and a short-circuit current of 8.26 mA/cm 2 , demonstrating a much better performance than a binary P1-/P2-based polymer solar cell (PCE = 1.14%). This result facilitates the possible improvement of the photovoltaic performance of SAMPSCs by inducing favorable nanophase segregation between p- and n blocks. In addition, owing to the high morphological stability of the block copolymer, excellent shelf-life was observed in a P3-based SAMPSC compared with a P1/P2-based PSC.

  13. Inhibitory control in mind and brain 2.0: Blocked-input models of saccadic countermanding

    PubMed Central

    Logan, Gordon D.; Yamaguchi, Motonori; Schall, Jeffrey D.; Palmeri, Thomas J.

    2015-01-01

    The interactive race model of saccadic countermanding assumes that response inhibition results from an interaction between a go unit, identified with gaze-shifting neurons, and a stop unit, identified with gaze-holding neurons, in which activation of the stop unit inhibits the growth of activation in the go unit to prevent it from reaching threshold. The interactive race model accounts for behavioral data and predicts physiological data in monkeys performing the stop-signal task. We propose an alternative model that assumes that response inhibition results from blocking the input to the go unit. We show that the blocked-input model accounts for behavioral data as accurately as the original interactive race model and predicts aspects of the physiological data more accurately. We extend the models to address the steady-state fixation period before the go stimulus is presented and find that the blocked-input model fits better than the interactive race model. We consider a model in which fixation activity is boosted when a stop signal occurs and find that it fits as well as the blocked input model but predicts very high steady-state fixation activity after the response is inhibited. We discuss the alternative linking propositions that connect computational models to neural mechanisms, the lessons to be learned from model mimicry, and generalization from countermanding saccades to countermanding other kinds of responses. PMID:25706403

  14. Sandia National Laboratories: Working with Sandia: Accounts Payable

    Science.gov Websites

    Payable iSupplier Account Accounts Payable Invoice Processing E-invoice Contract Information Construction and Facilities Contract Audit Working with Sandia Accounts Payable Invoice processing Electronic and quantity of property or services actually delivered or rendered (as stated in the contract

  15. Bacterial carbonate precipitation improves water absorption of interlocking compressed earth block (ICEB)

    NASA Astrophysics Data System (ADS)

    Zamer, M. M.; Irwan, J. M.; Othman, N.; Faisal, S. K.; Anneza, L. H.; Alshalif, A. F.; Teddy, T.

    2017-11-01

    Interlocking compressed earth blocks (ICEB) are soil based blocks that allows for mortarless construction. The addition of many alternative materials into interlocking block in order to improve the durability has been reported. However there are currently lack of report and evidence on the application of biocalcification or microbiologically induced calcite precipitation (MICP) in improving the engineering properties of ICEB. This paper evaluate the effect of UB in improving the water absorption properties of ICEB. This paper also provide the results on SEM analysis of addition of 1%, 3% and 5% UB in ICEB. The bacteria were added as partial replacement of limestone water in ICEB. The results showed the reduction of 14.72% with 5% UB on initial water absorption followed by the results for water absorption by 24-hour soaking which also indicates reduction of 14.68% with 5% UB on 28th days of testing compared to control specimen. It was expected that the reduction of water absorption was due to the plugging of pores by the bacterial calcite which prevent ingression of water in ICEB samples. Therefore this study hopes that the positive results from the UB as improving in water absorption of ICEB will lead to improve others ICEB properties and others construction materials.

  16. Minimum Description Length Block Finder, a Method to Identify Haplotype Blocks and to Compare the Strength of Block Boundaries

    PubMed Central

    Mannila, H.; Koivisto, M.; Perola, M.; Varilo, T.; Hennah, W.; Ekelund, J.; Lukk, M.; Peltonen, L.; Ukkonen, E.

    2003-01-01

    We describe a new probabilistic method for finding haplotype blocks that is based on the use of the minimum description length (MDL) principle. We give a rigorous definition of the quality of a segmentation of a genomic region into blocks and describe a dynamic programming algorithm for finding the optimal segmentation with respect to this measure. We also describe a method for finding the probability of a block boundary for each pair of adjacent markers: this gives a tool for evaluating the significance of each block boundary. We have applied the method to the published data of Daly and colleagues. The results expose some problems that exist in the current methods for the evaluation of the significance of predicted block boundaries. Our method, MDL block finder, can be used to compare block borders in different sample sets, and we demonstrate this by applying the MDL-based method to define the block structure in chromosomes from population isolates. PMID:12761696

  17. Minimum description length block finder, a method to identify haplotype blocks and to compare the strength of block boundaries.

    PubMed

    Mannila, H; Koivisto, M; Perola, M; Varilo, T; Hennah, W; Ekelund, J; Lukk, M; Peltonen, L; Ukkonen, E

    2003-07-01

    We describe a new probabilistic method for finding haplotype blocks that is based on the use of the minimum description length (MDL) principle. We give a rigorous definition of the quality of a segmentation of a genomic region into blocks and describe a dynamic programming algorithm for finding the optimal segmentation with respect to this measure. We also describe a method for finding the probability of a block boundary for each pair of adjacent markers: this gives a tool for evaluating the significance of each block boundary. We have applied the method to the published data of Daly and colleagues. The results expose some problems that exist in the current methods for the evaluation of the significance of predicted block boundaries. Our method, MDL block finder, can be used to compare block borders in different sample sets, and we demonstrate this by applying the MDL-based method to define the block structure in chromosomes from population isolates.

  18. Origami-inspired building block and parametric design for mechanical metamaterials

    NASA Astrophysics Data System (ADS)

    Jiang, Wei; Ma, Hua; Feng, Mingde; Yan, Leilei; Wang, Jiafu; Wang, Jun; Qu, Shaobo

    2016-08-01

    An origami-based building block of mechanical metamaterials is proposed and explained by introducing a mechanism model based on its geometry. According to our model, this origami mechanism supports response to uniaxial tension that depends on structure parameters. Hence, its mechanical properties can be tunable by adjusting the structure parameters. Experiments for poly lactic acid (PLA) samples were carried out, and the results are in good agreement with those of finite element analysis (FEA). This work may be useful for designing building blocks of mechanical metamaterials or other complex mechanical structures.

  19. Defining Responsibility in Maintaining Financial Accounting Systems.

    DTIC Science & Technology

    1995-01-01

    acquisition and issuance of materials, original cost , location, etc., KAR 2 (Property and Inventory Accounting )." (3:10) The final methodology used in...PROFESSIONAL MILITARY COMPTROLLER SCHOOL IDEA PAPER TITLE DEFINING RESPONSIBILITY IN MAINTAINING FINANCIAL ACCOUNTING SYSTEMS AUTHOR . :.a EFANIE B...or the Department of the Air Force. DIC tiJ.[ In.,,- B . . . .. . PMCS IDEA PAPER TITLE: Defining Responsibility in Maintaining Financial Accounting

  20. View southeast of caps for blocks for JFK; blocks are ...

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

    View southeast of caps for blocks for JFK; blocks are used to support ship when it is repositioned to paint inaccessible areas masked by original support blocks. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Carpentry Shop, League Island, Philadelphia, Philadelphia County, PA