WorldWideScience

Sample records for actinium 208

  1. Extraction of actinium with di-(2-ethylhexyl)phosphoric acid from hydrochloric and nitric acid solutions

    The extraction of actinium with HDEHP from Cl- and NO3- systems has been investigated. It was found that extraction of actinium from HCl solutions is much better than from HNO3 solutions. Stability constants of actinium complexes Ac(X-)+2 with Cl- and NO3- ligands were determined. Our results show that the actinium formed less stable complexes with Cl- than with NO3- ligands. 5 refs., 3 figs., 1 tab. (author)

  2. The sorption of polonium, actinium and protactinium onto geological materials

    This paper describes a combined experimental and modeling program of generic sorption studies to increase confidence in the performance assessment for a potential high-level radioactive waste repository in Japan. The sorption of polonium, actinium and protactinium onto geological materials has been investigated. Sorption of these radioelements onto bentonite, tuff and granodiorite from equilibrated de-ionized water was studied under reducing conditions at room temperature. In addition, the sorption of actinium and protactinium was investigated at 60 C. Thermodynamic chemical modeling was carried out to aid interpretation of the results

  3. Discovery of the actinium, thorium, protactinium, and uranium isotopes

    Fry, C; Thoennessen, M

    2012-01-01

    Currently, 31 actinium, 31 thorium, 28 protactinium, and 23 uranium isotopes have so far been observed; the discovery of these isotopes is discussed. For each isotope a brief summary of the first refereed publication, including the production and identification method, is presented.

  4. Separation of Actinium 227 from the uranium minerals

    The purpose of this work was to separate Actinium 227, whose content is 18%, from the mineral carnotite found in Gomez Chihuahua mountain range in Mexico. The mineral before processing is is pre-concentrated and passed, first through anionic exchange resins, later the eluate obtained is passed through cationic resins. The resins were 20-50 MESH QOWEX and 100-200 MESH 50 X 8-20 in some cased 200-400 MESH AG 50W-X8, 1X8 in other cases. The eluates from the ionic exchange were electrodeposited on stainless steel polished disc cathode and platinum electrode as anode; under a current ODF 10mA for 2.5 to 5 hours and of 100mA for .5 of an hour. it was possible to identify the Actinium 227 by means of its descendents, TH-227 and RA-223, through alpha spectroscopy. Due to the radiochemical purity which the electro deposits were obtained the Actinium 227 was low and was not quantitatively determined. A large majority of the members of the natural radioactive series 3 were identified and even alpha energies reported in the literature with very low percentages of non-identified emissions were observed. We conclude that a more precise study is needed concerning ionic exchange and electrodeposit to obtain an Actinium 227 of radiochemical purity. (Author)

  5. Spectroscopic and computational investigation of actinium coordination chemistry.

    Ferrier, Maryline G; Batista, Enrique R; Berg, John M; Birnbaum, Eva R; Cross, Justin N; Engle, Jonathan W; La Pierre, Henry S; Kozimor, Stosh A; Lezama Pacheco, Juan S; Stein, Benjamin W; Stieber, S Chantal E; Wilson, Justin J

    2016-01-01

    Actinium-225 is a promising isotope for targeted-α therapy. Unfortunately, progress in developing chelators for medicinal applications has been hindered by a limited understanding of actinium chemistry. This knowledge gap is primarily associated with handling actinium, as it is highly radioactive and in short supply. Hence, Ac(III) reactivity is often inferred from the lanthanides and minor actinides (that is, Am, Cm), with limited success. Here we overcome these challenges and characterize actinium in HCl solutions using X-ray absorption spectroscopy and molecular dynamics density functional theory. The Ac-Cl and Ac-OH2O distances are measured to be 2.95(3) and 2.59(3) Å, respectively. The X-ray absorption spectroscopy comparisons between Ac(III) and Am(III) in HCl solutions indicate Ac(III) coordinates more inner-sphere Cl(1-) ligands (3.2±1.1) than Am(III) (0.8±0.3). These results imply diverse reactivity for the +3 actinides and highlight the unexpected and unique Ac(III) chemical behaviour. PMID:27531582

  6. Production of high-purity radium-223 from legacy actinium-beryllium neutron sources.

    Soderquist, Chuck Z; McNamara, Bruce K; Fisher, Darrell R

    2012-07-01

    Radium-223 is a short-lived alpha-particle-emitting radionuclide with potential applications in cancer treatment. Research to develop new radiopharmaceuticals employing (223)Ra has been hindered by poor availability due to the small quantities of parent actinium-227 available world-wide. The purpose of this study was to develop innovative and cost-effective methods to obtain high-purity (223)Ra from (227)Ac. We obtained (227)Ac from two surplus actinium-beryllium neutron generators. We retrieved the actinium/beryllium buttons from the sources and dissolved them in a sulfuric-nitric acid solution. A crude actinium solid was recovered from the solution by coprecipitation with thorium fluoride, leaving beryllium in solution. The crude actinium was purified to provide about 40 milligrams of actinium nitrate using anion exchange in methanol-water-nitric acid solution. The purified actinium was then used to generate high-purity (223)Ra. We extracted (223)Ra using anion exchange in a methanol-water-nitric acid solution. After the radium was separated, actinium and thorium were then eluted from the column and dried for interim storage. This single-pass separation produces high purity, carrier-free (223)Ra product, and does not disturb the (227)Ac/(227)Th equilibrium. A high purity, carrier-free (227)Th was also obtained from the actinium using a similar anion exchange in nitric acid. These methods enable efficient production of (223)Ra for research and new alpha-emitter radiopharmaceutical development. PMID:22697483

  7. Radium, thorium, and actinium extraction from seawater using an improved manganese-oxide-coated fiber

    Laboratory experiments were conducted to determine the efficiency with which improved manganese-oxide-coated acrylic fibers extract radium, thorium, and actinium from seawater. Tests were made using surface seawater spiked with 227Ac, 227Th and 223Ra. For sample volumes of approximately 30 liters and flow rates up to 0.5 liters per minute, radium and actinium are removed quantitatively. Approximately 80-95% of the thorium is removed under these same conditions. (Auth.)

  8. Production of Actinium-225 via High Energy Proton Induced Spallation of Thorium-232

    Harvey, James T.; Nolen, Jerry; Vandergrift, George; Gomes, Itacil; Kroc, Tom; Horwitz, Phil; McAlister, Dan; Bowers, Del; Sullivan, Vivian; Greene, John

    2011-12-30

    The science of cancer research is currently expanding its use of alpha particle emitting radioisotopes. Coupled with the discovery and proliferation of molecular species that seek out and attach to tumors, new therapy and diagnostics are being developed to enhance the treatment of cancer and other diseases. This latest technology is commonly referred to as Alpha Immunotherapy (AIT). Actinium-225/Bismuth-213 is a parent/daughter alpha-emitting radioisotope pair that is highly sought after because of the potential for treating numerous diseases and its ability to be chemically compatible with many known and widely used carrier molecules (such as monoclonal antibodies and proteins/peptides). Unfortunately, the worldwide supply of actinium-225 is limited to about 1,000mCi annually and most of that is currently spoken for, thus limiting the ability of this radioisotope pair to enter into research and subsequently clinical trials. The route proposed herein utilizes high energy protons to produce actinium-225 via spallation of a thorium-232 target. As part of previous R and D efforts carried out at Argonne National Laboratory recently in support of the proposed US FRIB facility, it was shown that a very effective production mechanism for actinium-225 is spallation of thorium-232 by high energy proton beams. The base-line simulation for the production rate of actinium-225 by this reaction mechanism is 8E12 atoms per second at 200 MeV proton beam energy with 50 g/cm2 thorium target and 100 kW beam power. An irradiation of one actinium-225 half-life (10 days) produces {approx}100 Ci of actinium-225. For a given beam current the reaction cross section increases slightly with energy to about 400 MeV and then decreases slightly for beam energies in the several GeV regime. The object of this effort is to refine the simulations at proton beam energies of 400 MeV and above up to about 8 GeV. Once completed, the simulations will be experimentally verified using 400 MeV and 8 Ge

  9. Production of Actinium-225 via High Energy Proton Induced Spallation of Thorium-232

    The science of cancer research is currently expanding its use of alpha particle emitting radioisotopes. Coupled with the discovery and proliferation of molecular species that seek out and attach to tumors, new therapy and diagnostics are being developed to enhance the treatment of cancer and other diseases. This latest technology is commonly referred to as Alpha Immunotherapy (AIT). Actinium-225/Bismuth-213 is a parent/daughter alpha-emitting radioisotope pair that is highly sought after because of the potential for treating numerous diseases and its ability to be chemically compatible with many known and widely used carrier molecules (such as monoclonal antibodies and proteins/peptides). Unfortunately, the worldwide supply of actinium-225 is limited to about 1,000mCi annually and most of that is currently spoken for, thus limiting the ability of this radioisotope pair to enter into research and subsequently clinical trials. The route proposed herein utilizes high energy protons to produce actinium-225 via spallation of a thorium-232 target. As part of previous R and D efforts carried out at Argonne National Laboratory recently in support of the proposed US FRIB facility, it was shown that a very effective production mechanism for actinium-225 is spallation of thorium-232 by high energy proton beams. The base-line simulation for the production rate of actinium-225 by this reaction mechanism is 8E12 atoms per second at 200 MeV proton beam energy with 50 g/cm2 thorium target and 100 kW beam power. An irradiation of one actinium-225 half-life (10 days) produces ∼100 Ci of actinium-225. For a given beam current the reaction cross section increases slightly with energy to about 400 MeV and then decreases slightly for beam energies in the several GeV regime. The object of this effort is to refine the simulations at proton beam energies of 400 MeV and above up to about 8 GeV. Once completed, the simulations will be experimentally verified using 400 MeV and 8 GeV protons

  10. Comment: 208 [Taxonomy Icon

    Full Text Available Anopheles stephensi Anopheles stephensi Anopheles_stephensi_L.png 208.png Public Do...main CDC(Centers for Disease Control and Prevention)のimage libraryから(Public Domain) http://phil.cdc.gov/phil/home.asp bando 2010/02/15 14:45:35 2010/02/15 14:48:55 ...

  11. Neutron-Induced Fission of Actinium-227, Protactinium-231 and Neptunium-237: Mass Distribution

    Results of radiochemical studies on the mass distribution in the neutron-induced fission of actinium-227, protactinium-231 and neptunium-237 have been presented. This work has been carried out as part of a programme to determine the mass distribution in the fission of heavy elements as a function of Z and A. All irradiations have been carried out in the core of the swimming-pool type reactor APSARA with cadmium shielding wherever necessary. Relative yields of several fission product nuclides have been obtained by a method involving a comparison of the fission product activities from the respective targets with those formed from uranium-235 simultaneously irradiated. Thermal-neutron fission yields of uranium-235 have been assumed. These results indicate a predominantly asymmetric mass distribution in all the three cases, and also a distinct though small symmetric peak in the case of actinium-227. (author)

  12. A new method for the determination of low-level actinium-227 in geological samples

    We developed a new method for the determination of 227Ac in geological samples. The method uses extraction chromatographic techniques and alpha-spectrometry and is applicable for a range of natural matrices. Here we report on the procedure and results of the analysis of water (fresh and seawater) and rock samples. Water samples were acidified and rock samples underwent total dissolution via acid leaching. A DGA (N,N,N',N'-tetra-n-octyldiglycolamide) extraction chromatographic column was used for the separation of actinium. The actinium fraction was prepared for alpha spectrometric measurement via cerium fluoride micro-precipitation. Recoveries of actinium in water samples were 80 ± 8 % (number of analyses n = 14) and in rock samples 70 ± 12 % (n = 30). The minimum detectable activities (MDA) were 0.017-0.5 Bq kg-1 for both matrices. Rock sample 227Ac activities ranged from 0.17 to 8.3 Bq kg-1 and water sample activities ranged from below MDA values to 14 Bq kg-1of 227Ac. From the analysis of several standard rock and water samples with the method we found very good agreement between our results and certified values. (author)

  13. Analysis of the gamma spectra of the uranium, actinium, and thorium decay series

    Momeni, M.H.

    1981-09-01

    This report describes the identification of radionuclides in the uranium, actinium, and thorium series by analysis of gamma spectra in the energy range of 40 to 1400 keV. Energies and absolute efficiencies for each gamma line were measured by means of a high-resolution germanium detector and compared with those in the literature. A gamma spectroscopy method, which utilizes an on-line computer for deconvolution of spectra, search and identification of each line, and estimation of activity for each radionuclide, was used to analyze soil and uranium tailings, and ore.

  14. Analysis of the gamma spectra of the uranium, actinium, and thorium decay series

    This report describes the identification of radionuclides in the uranium, actinium, and thorium series by analysis of gamma spectra in the energy range of 40 to 1400 keV. Energies and absolute efficiencies for each gamma line were measured by means of a high-resolution germanium detector and compared with those in the literature. A gamma spectroscopy method, which utilizes an on-line computer for deconvolution of spectra, search and identification of each line, and estimation of activity for each radionuclide, was used to analyze soil and uranium tailings, and ore

  15. In-source laser spectroscopy developments at TRILIS—towards spectroscopy on actinium and scandium

    Resonance Ionization Laser Ion Sources (RILIS) have become a versatile tool for production and study of exotic nuclides at Isotope Separator On-Line (ISOL) facilities such as ISAC at TRIUMF. The recent development and addition of a grating tuned spectroscopy laser to the TRIUMF RILIS solid state laser system allows for wide range spectral scans to investigate atomic structures on short lived isotopes, e.g., those from the element actinium, produced in uranium targets at ISAC. In addition, development of new and improved laser ionization schemes for rare isotope production at ISAC is ongoing. Here spectroscopic studies on bound states, Rydberg states and autoionizing (AI) resonances on scandium using the existing off-line capabilities are reported. These results allowed to identify a suitable ionization scheme for scandium via excitation into an autoionizing state at 58,104 cm − 1 which has subsequently been used for ionization of on-line produced exotic scandium isotopes.

  16. 8 CFR 208.19 - Decisions.

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false Decisions. 208.19 Section 208.19 Aliens and... REMOVAL Asylum and Withholding of Removal § 208.19 Decisions. The decision of an asylum officer to grant... and to acknowledge receipt of the decision to grant or deny asylum, or to refer an asylum...

  17. 23 CFR 633.208 - Maintenance.

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Maintenance. 633.208 Section 633.208 Highways FEDERAL... PROVISIONS Federal-Aid Contracts (Appalachian Contracts) § 633.208 Maintenance. Maintenance of all highway... responsibility of the State. The State may arrange for maintenance of such roads or portions thereof,...

  18. 22 CFR 208.920 - Civil judgment.

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Civil judgment. 208.920 Section 208.920 Foreign...) Definitions § 208.920 Civil judgment. Civil judgment means the disposition of a civil action by any court of... creates a civil liability for the complained of wrongful acts, or a final determination of liability...

  19. 12 CFR 208.4 - Capital adequacy.

    2010-01-01

    ... 12 Banks and Banking 2 2010-01-01 2010-01-01 false Capital adequacy. 208.4 Section 208.4 Banks and... Requirements § 208.4 Capital adequacy. (a) Adequacy. A member bank's capital, as defined in appendix A to this... light of all the circumstances, the bank's capital appears inadequate in relation to its...

  20. 40 CFR 240.208-1 - Requirement.

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Requirement. 240.208-1 Section 240.208-1 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES GUIDELINES FOR THE THERMAL PROCESSING OF SOLID WASTES Requirements and Recommended Procedures § 240.208-1...

  1. 24 CFR 208.112 - Cost.

    2010-04-01

    ... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Cost. 208.112 Section 208.112... MULTIFAMILY SUBSIDIZED PROJECTS § 208.112 Cost. (a) The costs of the electronic transmission of the correctly... cost of contracting for those services, or the cost of centralizing the electronic...

  2. 40 CFR 240.208 - Residue.

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Residue. 240.208 Section 240.208 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES GUIDELINES FOR THE THERMAL PROCESSING OF SOLID WASTES Requirements and Recommended Procedures § 240.208 Residue....

  3. 42 CFR 93.208 - Evidence.

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Evidence. 93.208 Section 93.208 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES HEALTH ASSESSMENTS AND HEALTH EFFECTS... MISCONDUCT Definitions § 93.208 Evidence. Evidence means any document, tangible item, or testimony offered...

  4. 28 CFR 36.208 - Direct threat.

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Direct threat. 36.208 Section 36.208... ACCOMMODATIONS AND IN COMMERCIAL FACILITIES General Requirements § 36.208 Direct threat. (a) This part does not... individual poses a direct threat to the health or safety of others. (b) Direct threat means a...

  5. Developments towards in-gas-jet laser spectroscopy studies of actinium isotopes at LISOL

    Raeder, S.; Bastin, B.; Block, M.; Creemers, P.; Delahaye, P.; Ferrer, R.; Fléchard, X.; Franchoo, S.; Ghys, L.; Gaffney, L. P.; Granados, C.; Heinke, R.; Hijazi, L.; Huyse, M.; Kron, T.; Kudryavtsev, Yu.; Laatiaoui, M.; Lecesne, N.; Luton, F.; Moore, I. D.; Martinez, Y.; Mogilevskiy, E.; Naubereit, P.; Piot, J.; Rothe, S.; Savajols, H.; Sels, S.; Sonnenschein, V.; Traykov, E.; Van Beveren, C.; Van den Bergh, P.; Van Duppen, P.; Wendt, K.; Zadvornaya, A.

    2016-06-01

    To study exotic nuclides at the borders of stability with laser ionization and spectroscopy techniques, highest efficiencies in combination with a high spectral resolution are required. These usually opposing requirements are reconciled by applying the in-gas-laser ionization and spectroscopy (IGLIS) technique in the supersonic gas jet produced by a de Laval nozzle installed at the exit of the stopping gas cell. Carrying out laser ionization in the low-temperature and low density supersonic gas jet eliminates pressure broadening, which will significantly improve the spectral resolution. This article presents the required modifications at the Leuven Isotope Separator On-Line (LISOL) facility that are needed for the first on-line studies of in-gas-jet laser spectroscopy. Different geometries for the gas outlet and extraction ion guides have been tested for their performance regarding the acceptance of laser ionized species as well as for their differential pumping capacities. The specifications and performance of the temporarily installed high repetition rate laser system, including a narrow bandwidth injection-locked Ti:sapphire laser, are discussed and first preliminary results on neutron-deficient actinium isotopes are presented indicating the high capability of this novel technique.

  6. 14 CFR 1274.208 - Intellectual property.

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Intellectual property. 1274.208 Section... WITH COMMERCIAL FIRMS Pre-Award Requirements § 1274.208 Intellectual property. (a) Intellectual property rights. A cooperative agreement covers the disposition of rights to intellectual property...

  7. 31 CFR 208.7 - Agency responsibilities.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Agency responsibilities. 208.7 Section 208.7 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL...

  8. 31 CFR 208.2 - Definitions.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Definitions. 208.2 Section 208.2 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL AGENCY DISBURSEMENTS §...

  9. 31 CFR 208.9 - Compliance.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Compliance. 208.9 Section 208.9 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL AGENCY DISBURSEMENTS §...

  10. 31 CFR 208.8 - Recipient responsibilities.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Recipient responsibilities. 208.8 Section 208.8 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL...

  11. 31 CFR 208.4 - Waivers.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Waivers. 208.4 Section 208.4 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL AGENCY DISBURSEMENTS §...

  12. 31 CFR 800.208 - Critical infrastructure.

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Critical infrastructure. 800.208..., AND TAKEOVERS BY FOREIGN PERSONS Definitions § 800.208 Critical infrastructure. The term critical infrastructure means, in the context of a particular covered transaction, a system or asset, whether physical...

  13. 22 CFR 208.905 - Affiliate.

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Affiliate. 208.905 Section 208.905 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT... ownership; (b) Identity of interests among family members; (c) Shared facilities and equipment; (d)...

  14. 5 CFR 179.208 - Certification.

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Certification. 179.208 Section 179.208 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS CLAIMS COLLECTION STANDARDS... Office's regulations have been approved by OPM pursuant to 5 CFR part 550, subpart K; (5) The date...

  15. 5 CFR 430.208 - Rating performance.

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Rating performance. 430.208 Section 430.208 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PERFORMANCE MANAGEMENT Performance Appraisal for General Schedule, Prevailing Rate, and Certain Other Employees §...

  16. 44 CFR 208.43 - Rehabilitation.

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Rehabilitation. 208.43... Agreements § 208.43 Rehabilitation. DHS will reimburse costs incurred to return System equipment and... Activation. (3) Personnel costs associated with equipment cache rehabilitation. DHS will reimburse...

  17. Octupole transitions in the 208Pb region

    The 208Pb region is characterised by the existence of collective octupole states. Here we populated such states in 208Pb + 208Pb deep-inelastic reactions. γ-ray angular distribution measurements were used to infer the octupole character of several E3 transitions. The octupole character of the 2318 keV 17− → 14+ in 208Pb, 2485 keV 19/2− → 13/2+ in 207Pb, 2419 keV 15/2− → 9/2+ in 209Pb and 2465 keV 17/2+ → 11/2− in 207Tl transitions was demonstrated for the first time. In addition, shell model calculations were performed using two different sets of two-body matrix elements. Their predictions were compared with emphasis on collective octupole states

  18. Dicty_cDB: VHD208 [Dicty_cDB

    Full Text Available VH (Link to library) VHD208 (Link to dictyBase) - - - Contig-U16430-1 VHD208P (Link to Original site) VHD2...08F 584 VHD208Z 594 VHD208P 1158 - - Show VHD208 Library VH (Link to library) Clone ID VHD2...e URL http://dictycdb.biol.tsukuba.ac.jp/CSM/VH/VHD2-A/VHD208Q.Seq.d/ Representative seq. ID VHD2...08P (Link to Original site) Representative DNA sequence >VHD208 (VHD208Q) /CSM/VH/VHD2-A/VHD2...s. 88 7e-41 4 L34027 |L34027.1 Plasmodium falciparum (clone Dd2) heat shock protein 86 gene, complete cds. 9

  19. SEARCH FOR COLOR VAN-DER-WAALS FORCE IN PB-208+PB-208 MOTT SCATTERING

    VILLARI, ACC; MITTIG, W; LEPINESZILY, A; FILHO, RL; AUGER, G; BIANCHI, L; BEUNARD, R; CASANDJIAN, JM; CIFFRE, JL; CUNSOLO, A; FOTI, A; GAUDARD, L; LIMA, CL; PLAGNOL, E; SCHUTZ, Y; SIEMSSEN, RH; WIELECZKO, JP

    1993-01-01

    In a high precision experiment, Mott scattering of the Pb-208 + Pb-208 system was measured at E(lab) = 873.40 MeV and 1129.74 MeV with kinematic coincidences for angle pairs around theta(lab) = 30-degrees, 60-degrees and theta(lab) = 45-degrees, 45-degrees. The observed Mott oscillations exhibit an

  20. Complete electric dipole response in 208Pb

    Tamii, A; von Neumann-Cosel, P; Fujita, Y; Adachi, T; Bertulani, C A; Carter, J; Dozono, M; Fujita, H; Fujita, K; Hatanaka, K; Heilmann, A M; Ishikawa, D; Itoh, M; Ong, H J; Kawabata, T; Kalmykov, Y; Litvinova, E; Matsubara, H; Nakanishi, K; Neveling, R; Okamura, H; Özel-Tashenov, B; Ponomarev, V Yu; Richter, A; Rubio, B; Sakaguchi, H; Sakemi, Y; Sasamoto, Y; Shimbara, Y; Shimizu, Y; Smit, F D; Suzuki, T; Tameshige, Y; Wambach, J; Yamada, R; Yosoi, M; Zenihiro, J

    2011-01-01

    A benchmark experiment on 208Pb shows that polarized proton inelastic scattering at very forward angles including 0{\\deg} is a powerful tool for high-resolution studies of electric dipole (E1) and spin magnetic dipole (M1) modes in nuclei over a broad excitation energy range testing up-to-date nuclear model calculations. The E1 polarizability extracted from the data provides a constraint on the neutron skin thickness in 208Pb and the poorly known density dependence of the symmetry energy, relevant to the description of neutron stars.

  1. 37 CFR 2.208 - Deposit accounts.

    2010-07-01

    ... Section 2.208 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF... upon receipt of the statement to cover the value of items or services charged to the account and thus...) Bank Routing Code, which is 021030004; (iii) United States Patent and Trademark Office account...

  2. 27 CFR 46.208 - Unmerchantable articles.

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2010-04-01 2010-04-01 false Unmerchantable articles... Tubes Held for Sale on April 1, 2009 Inventories § 46.208 Unmerchantable articles. Articles that the.... However, the dealer must segregate any such unmerchantable articles and include them in a separate...

  3. Epilepsy 208 Cases Clinical Analysis%癫痫208例临床分析

    吴昊

    2013-01-01

    目的 探讨癫痫患者的临床及脑电图(EEG)改变.方法 对208例癫痫患者EEG进行分析.结果 208例癫痫患者EEG轻度异常55例,中度异常109例,重度异常17例.结论 EEG可为癫痫患者的诊断提供重要依据.

  4. 33 CFR 110.208 - Buffalo Harbor, N.Y.

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Buffalo Harbor, N.Y. 110.208 Section 110.208 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.208 Buffalo Harbor, N.Y. (a) The anchorage...

  5. 22 CFR 208.25 - How is this part organized?

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false How is this part organized? 208.25 Section 208.25 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) § 208.25 How is this part organized? (a) This part is subdivided into ten subparts. Each...

  6. 9 CFR 113.208 - Avian Encephalomyelitis Vaccine, Killed Virus.

    2010-01-01

    ..., Killed Virus. 113.208 Section 113.208 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE VIRUSES, SERUMS, TOXINS, AND ANALOGOUS PRODUCTS; ORGANISMS AND VECTORS STANDARD REQUIREMENTS Killed Virus Vaccines § 113.208 Avian Encephalomyelitis Vaccine, Killed Virus....

  7. 49 CFR 195.208 - Welding of supports and braces.

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Welding of supports and braces. 195.208 Section 195.208 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS... HAZARDOUS LIQUIDS BY PIPELINE Construction § 195.208 Welding of supports and braces. Supports or braces...

  8. 12 CFR 208.42 - Notice of capital category.

    2010-01-01

    ... 12 Banks and Banking 2 2010-01-01 2010-01-01 false Notice of capital category. 208.42 Section 208... Action § 208.42 Notice of capital category. (a) Effective date of determination of capital category. A member bank shall be deemed to be within a given capital category for purposes of section 38 of the...

  9. 9 CFR 93.208 - Articles accompanying poultry.

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Articles accompanying poultry. 93.208 Section 93.208 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF... FOR MEANS OF CONVEYANCE AND SHIPPING CONTAINERS Poultry § 93.208 Articles accompanying poultry....

  10. 46 CFR 122.208 - Accidents to machinery.

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Accidents to machinery. 122.208 Section 122.208 Shipping... Voyage Records § 122.208 Accidents to machinery. The owner, managing operator, or master shall report damage to a boiler, unfired pressure vessel, or machinery that renders further use of the item...

  11. 46 CFR 185.208 - Accidents to machinery.

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Accidents to machinery. 185.208 Section 185.208 Shipping...) OPERATIONS Marine Casualties and Voyage Records § 185.208 Accidents to machinery. The owner, managing operator, or master shall report damage to a boiler, unfired pressure vessel, or machinery that...

  12. 10 CFR 590.208 - Small volume exports.

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Small volume exports. 590.208 Section 590.208 Energy... WITH RESPECT TO THE IMPORT AND EXPORT OF NATURAL GAS Applications for Authorization To Import or Export Natural Gas § 590.208 Small volume exports. Any person may export up to 100,000 cubic feet of natural...

  13. 50 CFR 665.208 - Protected species conservation.

    2010-10-01

    ... 50 Wildlife and Fisheries 9 2010-10-01 2010-10-01 false Protected species conservation. 665.208 Section 665.208 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND... Fisheries § 665.208 Protected species conservation. The Regional Administrator may change the size of...

  14. Radiogenic lead-208 abundance 88.34 %

    Brazil has a long tradition in thorium technology, from the monazite ores mining until the production of the nuclear grade thorium compounds. Early in 1969 the Institute of Energy and Nuclear Research (IPEN) designed a project for a pilot plant installation to purify the thorium compounds, based on the solvent extraction technique. Thorium compounds used came from monazite's industrialization. During the course of the operation of this plant, a crude sludge were formed containing thorium not extracted and the whole rare earths, plus minor impurities like sodium, titanium, zirconium, hafnium, iron, silicon, phosphate and the thorium daughters were accumulated. Included is the radiogenic lead-208. This sludge, hereafter named 'RETOTER', was treated with hydrochloric acid and the lead was separated and recovered by anion exchange technology. The lead-208 was analyzed by mass spectrometry (HR-ICPMS) technique. The lead-208 abundance measure was 88.34%, this allowed the calculation of the thermal neutron capture cross section of σ0γ = 14,6 +/- 0.7 mb, considerably lower than the σ0γ = 174.2 +/- 0.7 mb value of the natural lead. (author)

  15. 22 CFR 208.340 - If I disclose unfavorable information required under § 208.335, will I be prevented from...

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false If I disclose unfavorable information required under § 208.335, will I be prevented from participating in the transaction? 208.340 Section 208.340... Participants § 208.340 If I disclose unfavorable information required under § 208.335, will I be prevented...

  16. Groundwater seepage from the Ranger uranium mine tailings dam: radioisotopes of radium, thorium and actinium. Supervising Scientist report 106

    Monitoring of bores near the Ranger uranium mine tailings dam has revealed deterioration in water quality in several bores since 1983. In a group of bores to the north of the dam, increases have been observed of up to 500 times for sulphate concentrations and of up to 5 times for 226Ra concentrations. Results are presented here of measurements of members of the uranium, thorium and actinium decay series in borewater samples collected between 1985 and 1993. In particular, measurements of all four naturally-occurring radium isotopes have been used in an investigation of the mechanism of radium concentration changes. For the most seepage-affected bores the major findings of the study include: 228Ra/226Ra 223Ra /226Ra and 224Ra/228Ra ratios all increased over the course of the study; barium concentrations show high seasonal variability, being lower in November than May, but strontium concentrations show a steady increase with time. Calculations show that the groundwater is probably saturated with respect to barite but not with respect to celestite or anglesite; sulphide concentrations are low in comparison with sulphate, and are higher in November than in May; and 227Ac concentrations have increased with time, but do not account for the high 223Ra/226Ra ratios. It is concluded on the basis of these observations that increases in Ra isotope concentrations observed in a number of seepage-affected bores arise from increases in salinity leading to desorption of radium from adsorption sites in the vicinity of the bore rather by direct transport of radium from the tailings. Increased salinity is also causing the observed increases in 227Ac and strontium concentrations, while formation of a barite solid phase in the groundwater is causing the removal of some radium from solution. This is the cause of the increasing radium isotope ratios noted above

  17. 31 CFR 208.5 - Availability of the ETA SM.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Availability of the ETA SM. 208.5 Section 208.5 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL...

  18. 31 CFR 208.6 - General account requirements.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false General account requirements. 208.6 Section 208.6 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL...

  19. 31 CFR 208.3 - Payment by electronic funds transfer.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Payment by electronic funds transfer. 208.3 Section 208.3 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL...

  20. 31 CFR 208.1 - Scope and application.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Scope and application. 208.1 Section 208.1 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL AGENCY DISBURSEMENTS §...

  1. 44 CFR 208.36 - Reimbursement for Alert.

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Reimbursement for Alert. 208... Cooperative Agreements § 208.36 Reimbursement for Alert. (a) Allowable costs. DHS will reimburse costs incurred during an Alert, up to the dollar limit specified in the Alert Order, for the following...

  2. Dicty_cDB: SFC208 [Dicty_cDB

    Full Text Available SF (Link to library) SFC208 (Link to dictyBase) - - - Contig-U16412-1 SFC208P (Link to Original ... r*rtsstscqrsrnskdsl*snhesnlkryv*kscccsrss*ksinxg*i pkis *cwys*irlni**nnfkkkklkn* Frame B: rmwssgmmhpchgcelg ...

  3. 30 CFR 208.14 - Civil and criminal penalties.

    2010-07-01

    ... U.S.C. 1719-20, and regulations at 30 CFR part 241. Civil penalties applicable under the OCSLA and... 30 Mineral Resources 2 2010-07-01 2010-07-01 false Civil and criminal penalties. 208.14 Section... MANAGEMENT SALE OF FEDERAL ROYALTY OIL General Provisions § 208.14 Civil and criminal penalties. Failure...

  4. 50 CFR 226.208 - Critical habitat for green turtle.

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Critical habitat for green turtle. 226.208 Section 226.208 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC... green turtle. (a) Culebra Island, Puerto Rico—Waters surrounding the island of Culebra from the...

  5. 47 CFR 25.208 - Power flux density limits.

    2010-10-01

    ... 47 Telecommunication 2 2010-10-01 2010-10-01 false Power flux density limits. 25.208 Section 25... COMMUNICATIONS Technical Standards § 25.208 Power flux density limits. (a) In the band 3650-4200 MHz, the power flux density at the Earth's surface produced by emissions from a space station for all conditions...

  6. 40 CFR 600.208-77 - Sample calculation.

    2010-07-01

    ... 600.208-77 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) ENERGY POLICY FUEL ECONOMY AND CARBON-RELATED EXHAUST EMISSIONS OF MOTOR VEHICLES Fuel Economy Regulations for 1977 and Later Model Year Automobiles-Procedures for Calculating Fuel Economy Values § 600.208-77 Sample...

  7. 5 CFR 847.208 - Changes of election.

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Changes of election. 847.208 Section 847... (CONTINUED) ELECTIONS OF RETIREMENT COVERAGE BY CURRENT AND FORMER EMPLOYEES OF NONAPPROPRIATED FUND INSTRUMENTALITIES Elections To Continue Retirement Coverage After a Qualifying Move § 847.208 Changes of...

  8. 48 CFR 208.7304 - Refined precious metals.

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Refined precious metals... Government-Owned Precious Metals 208.7304 Refined precious metals. See PGI 208.7304 for a list of refined precious metals managed by DSCP....

  9. Dicty_cDB: AHA208 [Dicty_cDB

    Full Text Available AH (Link to library) AHA208 (Link to dictyBase) - - - Contig-U16405-1 AHA208P (Link to Original ... ikyc*glyi*cfgfsil sksiqfei**ktkniw*ryshywlifkiiwws*fpy *fh*ck*tfcc*r*fl*sif*l** yycnistrirki*vvl**nwg*scti ...

  10. 15 CFR 2011.208 - Paperwork Reduction Act assigned number.

    2010-01-01

    ... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false Paperwork Reduction Act assigned number. 2011.208 Section 2011.208 Commerce and Foreign Trade Regulations Relating to Foreign Trade Agreements OFFICE OF THE UNITED STATES TRADE REPRESENTATIVE ALLOCATION OF TARIFF-RATE QUOTA ON IMPORTED SUGARS, SYRUPS AND MOLASSES Specialty Sugar...

  11. 31 CFR 208.10 - Reservation of rights.

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Reservation of rights. 208.10 Section... SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT OF FEDERAL AGENCY DISBURSEMENTS § 208.10 Reservation of rights. The Secretary reserves the right, in the Secretary's...

  12. Pygmy dipole resonance in 208Pb

    Poltoratska, I; Tamii, A; Adachi, T; Bertulani, C A; Carter, J; Dozono, M; Fujita, H; Fujita, K; Fujita, Y; Hatanaka, K; Itoh, M; Kawabata, T; Kalmykov, Y; Krumbholz, A M; Litvinova, E; Matsubara, H; Nakanishi, K; Neveling, R; Okamura, H; Ong, H J; Özel-Tashenov, B; Ponomarev, V Yu; Richter, A; Rubio, B; Sakaguchi, H; Sakemi, Y; Sasamoto, Y; Shimbara, Y; Shimizu, Y; Smit, F D; Suzuki, T; Tameshige, Y; Wambach, J; Yosoi, M; Zenihiro, J

    2012-01-01

    Scattering of protons of several hundred MeV is a promising new spectroscopic tool for the study of electric dipole strength in nuclei. A case study of 208Pb shows that at very forward angles J^pi = 1- states are strongly populated via Coulomb excitation. A separation from nuclear excitation of other modes is achieved by a multipole decomposition analysis of the experimental cross sections based on theoretical angular distributions calculated within the quasiparticle-phonon model. The B(E1) transition strength distribution is extracted for excitation energies up to 9 MeV, i.e., in the region of the so-called pygmy dipole resonance (PDR). The Coulomb-nuclear interference shows sensitivity to the underlying structure of the E1 transitions, which allows for the first time an experimental extraction of the strength and energy centroid of the PDR.

  13. Multipole matrix elements for 208Pb

    New measurements of inelastic proton scattering to low-lying states of 208Pb at 200 and 400 MeV are reported. Deformation lengths extracted from angular distributions for the 3- (2.614 MeV), 51- (3.198 MeV), 52- (3.209 MeV), 2+ (4.086 MeV) and 4+ (4.324 MeV) states are in good accord with values extracted at other incident proton energies. The fact that the deformation lengths are independent of incident proton energy within experimental uncertainty provides support for the validity of the collective DWBA for medium energy proton scattering to strongly excited states. Advantage is taken of this to extract statistically more precise values of the ratio of neutron to proton multipole matrix elements (M/sub n//M/sub p/). Different methods of determining the appropriate average value of M/sub n//M/sub p/ are discussed. 3 refs., 1 tab

  14. Unusual Threshold Anomaly in the 6Li+208Pb System

    ZHANG Chun-Lei; JIA Hui-Ming; WU Zhen-Dong; XU Xin-Xing; BAI Chun-Lin; ZHANG Huan-Qiao; LIN Cheng-Jian; RUAN Ming; LIU Zu-Hua; YANG Feng; WU Xiu-Kun; ZHOU Ping; AN Guang-Peng

    2006-01-01

    @@ The angular distributions of elastic scattering for the 6Li +208Pb system have been measured at several energies around the Coulomb barrier. The parameters of optical potential are extracted by means of a phenomenological optical model analysis. It is found that the real and imaginal potentials show a pronounced energy dependence.The behaviour of the potential at the nearly especially sub-barrier energies in the 6Li+208Pb system is quite different from the results of some previous reports observed in other systems, such as 19 F +208 Pb and 16 O+208 Pb.This unusual threshold phenomenon indicates that breakup channel is strongly coupled with the elastic channel and has obvious effects on optical potential.

  15. 27 CFR 555.208 - Construction of type 2 magazines.

    2010-04-01

    ..., FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage § 555.208 Construction of type 2 magazines. A type 2 magazine is a box, trailer, semitrailer, or other mobile...

  16. Association of benign recurrent vertigo and migraine in 208 patients

    Cha, Y-H; Lee, H.; Santell, LS; Baloh, RW

    2009-01-01

    The aim of this study was to determine the association of benign recurrent vertigo (BRV) and migraine, using standardized questionnaire-based interview of 208 patients with BRV recruited through a University Neurotology clinic. Of 208 patients with BRV, 180 (87%) met the International Classification of Headache Disorders 2004 criteria for migraine: 112 migraine with aura (62%) and 68 without aura (38%). Twenty-eight (13%) did not meet criteria for migraine. Among patients with migraine, 70% e...

  17. THE HIGH-PRECISION MEASUREMENT OF PB-208+PB-208 MOTT SCATTERING AT ENERGIES UNDER THE COULOMB BARRIER - THE OBSERVATION OF NEW ATOMIC EFFECTS

    LEPINESZILY, A; CASANDJIAN, JM; MITTIG, W; VILLARI, ACC; LICHTENTHALER, R; AUGER, G; BIANCHI, L; BEUNARD, R; BRANDAN, ME; CIFFRE, JL; CUNSOLO, A; FOTI, A; GAUDARD, L; MENCHACAROCHA, A; ORR, NA; PLAGNOL, E; SCHUTZ, Y; SIEMSSEN, RH; WIELECZKO, JP

    1995-01-01

    In a high precision experiment, Mott scattering of the Pb-208+Pb-208 and elastic scattering of the Pb-208+U-238 systems was measured at 6 energies near the Coulomb barrier with kinematic coincidences for angle pairs at theta(lab)=30 degrees, 60 degrees. The relative laboratory angle between scattere

  18. Neutron decay of giant resonances in 208Pb

    The neutron decay of the giant multipole resonance region between 9 to 15 MeV in 208Pb has been studied. The giant resonances were excited by inelastic scattering of 17O at 380 MeV. Neutrons from 208Pb and γ rays from 207Pb were detected in the ORNL Spin Spectrometer and the 17O in ΔE-E silicon detector telescopes. The neutron branching ratios for the decay to the ground state and to the low lying excited states of 207Pb were measured as a function of the excitation energy of 208Pb and compared to Hauser-Feshbach calculations. Evidence for non statistical neutron decay to selected single-hole states, and to hole-surface vibration and hole-pairing vibration coupled states was found. 18 refs., 1 tab., 5 figs

  19. Neutron Star Structure and the Neutron Radius of 208Pb

    Horowitz, C J

    2001-01-01

    We study relationships between the neutron-rich skin of a heavy nucleus and the properties of neutron-star crusts. Relativistic effective field theories with a thicker neutron skin in $^{208}$Pb have a larger electron fraction and a lower liquid-to-solid transition density for neutron-rich matter. These properties are determined by the density dependence of the symmetry energy which we vary by adding nonlinear couplings between isoscalar and isovector mesons. An accurate measurement of the neutron radius in $^{208}$Pb---via parity violating electron scattering---may have important implications for the structure of neutron stars.

  20. 12 CFR 208.51 - Real estate lending standards.

    2010-01-01

    ... 208.51 Banks and Banking FEDERAL RESERVE SYSTEM BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM... bank's board of directors at least annually. (2) The lending policies shall establish: (i) Loan portfolio diversification standards; (ii) Prudent underwriting standards, including loan-to-value...

  1. Spreading width of Gamow-Teller resonances in 208Bi

    The spreading width of the Gamow-Teller resonance in 208Bi is studied in the self-consistent TDA with the Skyrme interaction. Coupling between 1p1h states and 2p2h states are included in the TDA linear response function. (orig.)

  2. 44 CFR 208.8 - Code of conduct.

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Code of conduct. 208.8... of conduct. The Assistant Administrator will develop and implement a code of conduct for System Members acting under DHS's direction and control. Nothing in this section or the DHS code of conduct...

  3. 33 CFR 160.208 - Changes to a submitted NOA.

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Changes to a submitted NOA. 160... Conditions, and Certain Dangerous Cargos § 160.208 Changes to a submitted NOA. (a) Unless otherwise specified in this section, when submitted NOA information changes, vessels must submit a notice of...

  4. On the states 3- x 3- in 208Pb

    Two-particle-two-hole states built upon collective surface and pairing excitations are studied in 208Pb using the multistep shell-model method. It is found that only two of the three 0+ states that arise from those collective excitations are reached by two-neutron transfer or inelastic scattering probes, in agreement with recent high-resolution experiments. (orig.)

  5. 21 CFR 208.26 - Exemptions and deferrals.

    2010-04-01

    ... subject to this part shall provide a Medication Guide to any patient who requests information when the...: GENERAL MEDICATION GUIDES FOR PRESCRIPTION DRUG PRODUCTS General Requirements for a Medication Guide § 208... an applicant, may exempt or defer any Medication Guide content or format requirement, except...

  6. 27 CFR 27.208 - Liquor bottles denied entry.

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Liquor bottles denied... BUREAU, DEPARTMENT OF THE TREASURY LIQUORS IMPORTATION OF DISTILLED SPIRITS, WINES, AND BEER Requirements for Liquor Bottles § 27.208 Liquor bottles denied entry. Filled liquor bottles, not conforming to...

  7. 48 CFR 52.208-4 - Vehicle Lease Payments.

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Vehicle Lease Payments. 52....208-4 Vehicle Lease Payments. As prescribed in 8.1104(a), insert the following clause in solicitations...: Vehicle Lease Payments (APR 1984) (a) Upon the submission of proper invoices or vouchers, the...

  8. 44 CFR 208.64 - Administrative and audit requirements.

    2010-10-01

    ... Reimbursement Claims and Appeals § 208.64 Administrative and audit requirements. (a) Non-Federal audit. For Sponsoring Agencies and States, requirements for non-Federal audit are contained in 44 CFR 13.26, in... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Administrative and...

  9. 47 CFR 73.208 - Reference points and distance computations.

    2010-10-01

    ... middle latitude. (vi) NS=the North-South distance in kilometers. (vii) EW=the East-West distance in... 47 Telecommunication 4 2010-10-01 2010-10-01 false Reference points and distance computations. 73... SERVICES RADIO BROADCAST SERVICES FM Broadcast Stations § 73.208 Reference points and distance...

  10. 40 CFR 180.208 - Benfluralin; tolerances for residues.

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Benfluralin; tolerances for residues...) PESTICIDE PROGRAMS TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD Specific Tolerances § 180.208 Benfluralin; tolerances for residues. (a) General. Tolerances are established for residues...

  11. 20 CFR 655.208 - Temporary labor certification applications involving fraud or willful misrepresentation.

    2010-04-01

    ... involving fraud or willful misrepresentation. 655.208 Section 655.208 Employees' Benefits EMPLOYMENT AND... Temporary labor certification applications involving fraud or willful misrepresentation. (a) If possible fraud or willful misrepresentation involving a temporary labor certification application is...

  12. The Pb-208(n,p)Tl-208 reaction at E-n=97 MeV

    Ringbom, A; Hakansson, A; Tibell, G; Zorro, R; Blomgren, J; Conde, H; Rahm, J; Olsson, N; Ramstrom, E; Ronnqvist, T; Jonsson, O; Nilsson, L; Renberg, PU; vanderWerf, SY; Lenske, H

    1997-01-01

    Double-differential cross sections of the Pb-208(n,p) reaction have been measured at 97 MeV in the angular range 0 degrees-30 degrees for excitation energies up to 40 MeV. The experimental proton spectra have been compared with calculated spectra obtained with a statistical multistep direct reaction

  13. 48 CFR 252.208-7000 - Intent to furnish precious metals as Government-furnished material.

    2010-10-01

    ... metals as Government-furnished material. 252.208-7000 Section 252.208-7000 Federal Acquisition... precious metals as Government-furnished material. As prescribed in 208.7305(a), use the following clause: Intent To Furnish Precious Metals as Government-Furnished Material (DEC 1991) (a) The Government...

  14. 22 CFR 208.725 - How much time do I have to contest a suspension?

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false How much time do I have to contest a suspension? 208.725 Section 208.725 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Suspension § 208.725 How much time do I have to contest...

  15. 22 CFR 208.720 - How may I contest a suspension?

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false How may I contest a suspension? 208.720 Section 208.720 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Suspension § 208.720 How may I contest a suspension? If you as a respondent wish to contest...

  16. 40 CFR 141.208 - Special notice for exceedance of the SMCL for fluoride.

    2010-07-01

    ... SMCL for fluoride. 141.208 Section 141.208 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... Drinking Water Violations § 141.208 Special notice for exceedance of the SMCL for fluoride. (a) When is the special notice to be given? Community water systems that exceed the fluoride secondary maximum...

  17. 31 CFR 575.208 - Prohibited transportation-related transactions involving Iraq.

    2010-07-01

    ... transactions involving Iraq. 575.208 Section 575.208 Money and Finance: Treasury Regulations Relating to Money... REGULATIONS Prohibitions § 575.208 Prohibited transportation-related transactions involving Iraq. Except as... transportation to or from Iraq; (b) The provision of transportation to or from the United States by any...

  18. 20 CFR 498.208 - Exchange of witness lists, witness statements and exhibits.

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Exchange of witness lists, witness statements and exhibits. 498.208 Section 498.208 Employees' Benefits SOCIAL SECURITY ADMINISTRATION CIVIL MONETARY PENALTIES, ASSESSMENTS AND RECOMMENDED EXCLUSIONS § 498.208 Exchange of witness lists,...

  19. 5 CFR 930.208 - Administrative Law Judge Loan Program-detail to other agencies.

    2010-01-01

    ...-detail to other agencies. 930.208 Section 930.208 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT... (MISCELLANEOUS) Administrative Law Judge Program § 930.208 Administrative Law Judge Loan Program—detail to other... that coordinates the loan/detail of an administrative law judge from one agency to another. An...

  20. 22 CFR 208.855 - Who has the burden of proof in a debarment action?

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Who has the burden of proof in a debarment action? 208.855 Section 208.855 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Debarment § 208.855 Who has the burden of proof in a...

  1. 48 CFR 52.208-8 - Required Sources for Helium and Helium Usage Data.

    2010-10-01

    ... Helium and Helium Usage Data. 52.208-8 Section 52.208-8 Federal Acquisition Regulations System FEDERAL... Provisions and Clauses 52.208-8 Required Sources for Helium and Helium Usage Data. As prescribed in 8.505, insert the following clause: Required Sources for Helium and Helium Usage Data (APR 2002) (a)...

  2. 31 CFR 515.208 - Restrictions on loans, credits and other financing.

    2010-07-01

    ... other financing. 515.208 Section 515.208 Money and Finance: Treasury Regulations Relating to Money and... REGULATIONS Prohibitions § 515.208 Restrictions on loans, credits and other financing. No United States... provide other financing for the purpose of financing transactions involving confiscated property the...

  3. The Evaluation of 208 Ventricular Septal Defect Patients

    Paç, F. Ayşenur; EGE, Erdal; Paç, Mustafa; Battaloğlu, Bektaş; Emmiler, Mustafa; Akpınar, Beşir; Sarı, Süleyman; Pelik, Fatma

    2001-01-01

    Venticular septal defect is the most common congenital heart defect except bicüspit aortic valve. The first description of ventricular septal defect as a clinical entity was credited to Roger in 1879. It occurs in 1.5-2 in 1000 alive birth. We studied retrospectively 208 cases of VSD seen in our medical center. The patients were evaluated according to the especially clinical data, types of VSD, closure rates, complications (AVP, AY, VSD aneurysm), and surgical therapies. Key words: Ventri...

  4. Angular distributions of threshold photoneutrons from 208Pb

    The shape of the 41 keV resonance in the 208Pb(γ,n)207Pb reaction has been considered in some detail in view of recent reports of asymmetry interpreted in terms of interference between resonant and nonresonant neutron capture amplitudes. Additional threshold measurements were made using bremsstrahlung with an endpoint energy of 8.0 MeV. It has been concluded that asymmetry in the present data appears to be induced by the presence of an unresolved resonance, and that this interpretation of the resonance shape cannot be confuted on the basis of (n,γ) or total neutron cross section measurements made elsewhere. (author)

  5. Near barrier scattering of 8He on 208Pb

    Marquínez-Durán G.

    2014-03-01

    Full Text Available The exotic nucleus 8He is investigated by means of the measurement of the angular distributions of the elastic channel and the 6He and 4He fragment yields produced in the collision with a 208Pb target at two energies around the Coulomb barrier, 16 and 22 MeV. The experiment was performed at the GANIL-SPIRAL facility, with the aim of extracting information about the structure of 8He and the relevant reaction mechanisms. In this contribution, details of the experimental setup and preliminary data on elastic cross sections are reported.

  6. The impact parameter dependence of the K MO X-ray emission in 208Pb+208Pb collisions

    The emission probabilities for quasimolecular K-X-radiation (K-MOR) have been measured in 208Pb+208Pb collisions at 4.3 MeV/u and 4.8 MeV/u as a function of the scattering angle using the particle-photon-coincidence technique. The probabilities exhibit a superposition of two exponential slopes with different fall-off constants. We identify the sharp fall off at very small impact parameters (<60 fm) with the K-MOR contribution from the decay of 1ssigma-vacancies. The flatter slope for impact parameters larger than 60 fm is attributed to the radiative decay of holes in 2psub(1/2)sigma molecular states. In this way, experimental ''1ssigma-MOR-emission probabilities'' could be extracted and compared with theory. For 4.3 MeV/u the 1ssigma- and 2psub(1/2)sigma-excitation probabilities could also be determined and have been compared to coupled-channel calculations and to a scaling law for 1ssigma-excitation. (orig.)

  7. Electron capture and positron decay of 206Fr and 208Fr and the energy levels of 206Rn and 208Rn

    The isotopes 206Fr and 208Fr were produced by the reactions Ir(20Ne,xn)/sup 206,208/Fr and mass separated on-line. The electron-capture and positron decays to 206Rn and 208Rn were studied by collecting γ ray and internal conversion electron singles spectra as a function of decay time as well as γ-γ, γ-e-, and γ-x ray coincidence spectra. The energies and many of the spins were determined for 18 excited, even parity states in 208Rn and for 10 excited, even parity states in 206Rn. These nuclei appear to be excellent candidates for interpretation in terms of a weak coupling shell model. The energy levels were also compared to the predictions of the interacting boson approximation model

  8. Fragmentation of few-quasiparticle components of highly excited states in sup(207,208)Pb

    The s-, p- and d-wave neutron strength functions are calculated for sup(207, 208)Pd. Their energy dependence is correctly described. The fine structure of the isoscalar quadrupole resonance is explained and the description for the low-lying octupole resonance and high-lying isoscalar octupole resonance in 208Pb is obtained in agreement with the experimental data

  9. 44 CFR 208.38 - Reimbursement for re-supply and logistics costs incurred during Activation.

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Reimbursement for re-supply and logistics costs incurred during Activation. 208.38 Section 208.38 Emergency Management and...-supply and logistics costs incurred during Activation. With the exception of emergency...

  10. Search for the two-phonon octupole vibrational state in {sup 208}Pb

    Blumenthal, D.J.; Henning, W.; Janssens, R.V.F. [and others

    1995-08-01

    We performed an experiment to search for the two-phonon octupole vibrational state in {sup 208}Pb. Thick targets of {sup 208}Pb, {sup 209}Bi, {sup 58,64}Ni, and {sup 160}Gd were bombarded with 1305 MeV beams of were bombard {sup 208}Pb supplied by ATLAS. Gamma rays were detected using the Argonne-Notre Dame BGO gamma-ray facility, consisting of 12 Compton-suppressed germanium detectors surrounding an array of 50 BGO scintillators. We identified some 30 known gamma rays from {sup 208}Pb in the spectra gated by the 5{sup -} {yields} 3{sup -} and 3{sup -} {yields} 0{sup +} transitions in {sup 208}Pb. In addition, after unfolding these spectra for Compton response, we observed broad coincident structures in the energy region expected for the 2-phonon states. Furthermore, we confirmed the placement of a 2485 keV line observed previously in {sup 207}Pb and find no evidence consistent with the placement of this line in {sup 208}Pb. We are currently in the process of investigating the origin of the broadened lines observed in the spectra, extracting the excitation probability of states in {sup 208}Pb, and determining the relative probability of mutual excitation and neutron transfer in this reaction. An additional experiment is also being performed to collect much higher statistics germanium-germanium coincidence data for the thick {sup 208}Pb target.

  11. 22 CFR 208.625 - What is the scope of a suspension or debarment action?

    2010-04-01

    ... action? 208.625 Section 208.625 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT GOVERNMENTWIDE... debarment of all of your divisions and other organizational elements from all covered transactions, unless... identified individuals, divisions, or other organizational elements; or (2) To specific types of...

  12. 48 CFR 253.208-2 - DD Form 448-2, Acceptance of MIPR.

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false DD Form 448-2, Acceptance... REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE CLAUSES AND FORMS FORMS Prescription of Forms 253.208-2 DD Form 448-2, Acceptance of MIPR. Follow the procedures at PGI 253.208-2 for use of DD Form 448-2....

  13. 12 CFR Appendix C to Part 208 - Interagency Guidelines for Real Estate Lending Policies

    2010-01-01

    ... regulation. 1 The agencies have adopted a uniform rule on real estate lending. See 12 CFR part 365 (FDIC); 12... 12 Banks and Banking 2 2010-01-01 2010-01-01 false Interagency Guidelines for Real Estate Lending... H) Pt. 208, App. C Appendix C to Part 208—Interagency Guidelines for Real Estate Lending...

  14. 8 CFR 208.18 - Implementation of the Convention Against Torture.

    2010-01-01

    ... Torture. 208.18 Section 208.18 Aliens and Nationality DEPARTMENT OF HOMELAND SECURITY IMMIGRATION... Implementation of the Convention Against Torture. (a) Definitions. The definitions in this subsection incorporate the definition of torture contained in Article 1 of the Convention Against Torture, subject to...

  15. 8 CFR 208.17 - Deferral of removal under the Convention Against Torture.

    2010-01-01

    ... Against Torture. 208.17 Section 208.17 Aliens and Nationality DEPARTMENT OF HOMELAND SECURITY IMMIGRATION... Deferral of removal under the Convention Against Torture. (a) Grant of deferral of removal. An alien who... Convention Against Torture; and is subject to the provisions for mandatory denial of withholding of...

  16. 33 CFR 208.25 - Pensacola Dam and Reservoir, Grand (Neosho) River, Okla.

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Pensacola Dam and Reservoir, Grand (Neosho) River, Okla. 208.25 Section 208.25 Navigation and Navigable Waters CORPS OF ENGINEERS..., Grand (Neosho) River, Okla. The representative of the agency charged with the operation of the...

  17. 22 CFR 208.815 - How may I contest a proposed debarment?

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false How may I contest a proposed debarment? 208.815... SUSPENSION (NONPROCUREMENT) Debarment § 208.815 How may I contest a proposed debarment? If you as a respondent wish to contest a proposed debarment, you or your representative must provide the...

  18. 31 CFR 537.208 - Holding of funds in interest-bearing accounts; investment and reinvestment.

    2010-07-01

    ... under the Securities Exchange Act of 1934, provided the funds are invested in a money market fund or in... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Holding of funds in interest-bearing accounts; investment and reinvestment. 537.208 Section 537.208 Money and Finance: Treasury...

  19. 8 CFR 208.5 - Special duties toward aliens in custody of DHS.

    2010-01-01

    ... case of an alien who is in custody pending a credible fear determination under 8 CFR 208.30 or a reasonable fear determination pursuant to 8 CFR 208.31. Although DHS does not have a duty in the case of an alien who is in custody pending a credible fear or reasonable fear determination under either 8 CFR...

  20. MicroRNA-208a Silencing Attenuates Doxorubicin Induced Myocyte Apoptosis and Cardiac Dysfunction

    Hasahya Tony

    2015-01-01

    Full Text Available Aims. GATA4 depletion is a distinct mechanism by which doxorubicin leads to cardiomyocyte apoptosis, and preservation of GATA4 mitigates doxorubicin induced myocyte apoptosis and cardiac dysfunction. We investigated a novel approach of attenuating doxorubicin induced cardiac toxicity by silencing miR-208a, a heart specific microRNA known to target GATA4. Methods and Results. Eight-week-old female Balb/C mice were randomly assigned to sham, antagomir, and control groups. Antagomir group were pretreated with miR-208a antagomir 4 days before doxorubicin administration. At day 0, control and antagomir groups received 20 mg/kg of doxorubicin, while sham mice received phosphate buffered solution. Echocardiography was done at day 7, after which animals were sacrificed and hearts harvested and assessed for apoptosis and expression of miR-208a, GATA4, and BCL-2. Doxorubicin significantly upregulated miR-208a, downregulated GATA4, and increased myocyte apoptosis, with resulting decrease in cardiac function. In contrast, therapeutic silencing of miR-208a salvaged GATA4 and BCL-2 and decreased apoptosis, with improvement in cardiac function. Conclusion. Doxorubicin upregulates miR-208a and promotes cardiomyocyte apoptosis, while therapeutic silencing of miR-208a attenuates doxorubicin induced myocyte apoptosis with subsequent improvement in cardiac function. These novel results highlight the therapeutic potential of targeting miR-208a to prevent doxorubicin cardiotoxicity.

  1. 22 CFR 208.515 - What specific information is in the EPLS?

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false What specific information is in the EPLS? 208.515 Section 208.515 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT GOVERNMENTWIDE DEBARMENT... an individual to verify the identity of an individual, only if permitted under the Privacy Act...

  2. 45 CFR 400.208 - Claims involving family units which include both refugees and nonrefugees.

    2010-10-01

    ... refugees and nonrefugees. 400.208 Section 400.208 Public Welfare Regulations Relating to Public Welfare OFFICE OF REFUGEE RESETTLEMENT, ADMINISTRATION FOR CHILDREN AND FAMILIES, DEPARTMENT OF HEALTH AND HUMAN SERVICES REFUGEE RESETTLEMENT PROGRAM Federal Funding Federal Funding for Expenditures for...

  3. 12 CFR 208.3 - Application and conditions for membership in the Federal Reserve System.

    2010-01-01

    ... the Federal Reserve System. 208.3 Section 208.3 Banks and Banking FEDERAL RESERVE SYSTEM BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM MEMBERSHIP OF STATE BANKING INSTITUTIONS IN THE FEDERAL RESERVE..., 2 in accordance with this part and § 262.3 of the Rules of Procedure, located at 12 CFR 262.3. 2...

  4. 33 CFR 263.24 - Authority for snagging and clearing for flood control (Section 208).

    2010-07-01

    ... clearing for flood control (Section 208). 263.24 Section 263.24 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE CONTINUING AUTHORITIES PROGRAMS Flood Control Policy § 263.24 Authority for snagging and clearing for flood control (Section 208). (a)...

  5. 23 CFR 970.208 - Federal lands pavement management system (PMS).

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Federal lands pavement management system (PMS). 970.208... HIGHWAYS NATIONAL PARK SERVICE MANAGEMENT SYSTEMS National Park Service Management Systems § 970.208 Federal lands pavement management system (PMS). In addition to the requirements provided in § 970.204,...

  6. 5 CFR 362.208 - Resignation, termination, reduction in force, and appeal rights.

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Resignation, termination, reduction in force, and appeal rights. 362.208 Section 362.208 Administrative Personnel OFFICE OF PERSONNEL... Resignation, termination, reduction in force, and appeal rights. (a) Resignation. A Fellow or Senior...

  7. 22 CFR 208.800 - What are the causes for debarment?

    2010-04-01

    ... taken before October 1, 1988, or a procurement debarment by any Federal agency taken pursuant to 48 CFR... 22 Foreign Relations 1 2010-04-01 2010-04-01 false What are the causes for debarment? 208.800... SUSPENSION (NONPROCUREMENT) Debarment § 208.800 What are the causes for debarment? We may debar a person...

  8. Mobility and lifetime of 208Tl ions in liquid xenon

    Positively charged 208Tl ions are transported through liquid xenon using electric fields in the range of 4-10 kV cm-1 and for drift distances up to 50 mm. From these measurements we deduce upper limits on the attenuation length for Tl ions in liquid xenon, resulting in a lifetime >5.5 s. In addition to these results, the field independent mobility of Tl bearing species in liquid xenon was measured to be 1.33±0.04x10-4 cm2 V-1 s-1. This result, when coupled with those for other species by previous workers, suggests that positive ion mobility in liquid xenon is proportional to the hard-core radius. Applications to Ba ion collection in a double beta decay experiment are also discussed

  9. β-decay systematic trends of nuclei beyond 208Pb

    The β decay of several nuclei beyond 208Pb has been investigated using the FRS+RISING set up at the GSI accelerator facilities, in Darmstadt. This contribution provides a compilation of the β-decay information obtained for neutron-rich Tl, Pb and Bi isotopes. On the basis of the new data, a general overview on the β-decay systematics in this mass region is provided. The study reveals the impact of the microscopic structure of these nuclei on the descriptive power of standard theoretical models. These are used to extrapolate gross properties towards the neutron-drip line, where the nuclei that concur in the formation of the third r-process abundance peak reside. Deficiencies in their predictive power are discussed.

  10. Relativistic approach to isoscalar giant resonances in 208Pb

    We calculate the longitudinal response of 208Pb using a relativistic random-phase approximation to three different parametrizations of the Walecka model with scalar self-interactions. >From a nonspectral calculation of the response -- which automatically includes the mixing between positive- and negative-energy states -- we extract the distribution of strength for the isoscalar monopole, dipole, and high-energy octupole resonances. We employ a consistent formalism that uses the same interaction in the calculation of the ground state as in the calculation of the response. As a result, the conservation of the vector current is strictly maintained throughout the calculation. Further, the spurious dipole strength -- associated with the uniform translation of the center of mass -- gets shifted to zero excitation energy and is cleanly separated from the physical excitations. The best description of the collective modes is obtained using a ''soft'' parametrization having a compression modulus of K=224 MeV

  11. Study of the neutron skin thickness of ${}^{208}$Pb in mean field models

    Roca-Maza, X; Viñas, X; Warda, M

    2011-01-01

    We study whether the neutron skin thickness $\\Delta r_{np}$ of ${}^{208}$Pb originates from the bulk or from the surface of the neutron and proton density distributions in mean field models. We find that the size of the bulk contribution to $\\Delta r_{np}$ of ${}^{208}$Pb strongly depends on the slope of the nuclear symmetry energy, while the surface contribution does not. We note that most mean field models predict a neutron density for ${}^{208}$Pb between the halo and skin type limits. We investigate the dependence of parity- violating electron scattering at the kinematics of the PREX experiment on the shape of the nucleon densities predicted by the mean field models for ${}^{208}$Pb. We find an approximate formula for the parity-violating asymmetry in terms of the central radius and the surface diffuseness of the nucleon densities of ${}^{208}$Pb in these models.

  12. 25 CFR 900.208 - How are non-medical related tort claims and lawsuits filed for DOI?

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false How are non-medical related tort claims and lawsuits filed for DOI? 900.208 Section 900.208 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR, AND... Related Claims § 900.208 How are non-medical related tort claims and lawsuits filed for DOI?...

  13. Therapeutic Inhibition of miR-208a Improves Cardiac Function and Survival During Heart Failure

    Montgomery, Rusty L.; Hullinger, Thomas G.; Semus, Hillary M.; Dickinson, Brent A.; Seto, Anita G.; Lynch, Joshua M.; Stack, Christianna; Latimer, Paul A.; Olson, Eric N.; van Rooij, Eva

    2012-01-01

    Background Diastolic dysfunction in response to hypertrophy is a major clinical syndrome with few therapeutic options. MicroRNAs act as negative regulators of gene expression by inhibiting translation or promoting degradation of target mRNAs. Previously, we reported that genetic deletion of the cardiac-specific miR-208a prevents pathological cardiac remodeling and upregulation of Myh7 in response to pressure overload. Whether this miRNA might contribute to diastolic dysfunction or other forms of heart disease is currently unknown. Methods and Results Here, we show that systemic delivery of an antisense oligonucleotide induces potent and sustained silencing of miR-208a in the heart. Therapeutic inhibition of miR-208a by subcutaneous delivery of antimiR-208a during hypertension-induced heart failure in Dahl hypertensive rats dose-dependently prevents pathological myosin switching and cardiac remodeling while improving cardiac function, overall health, and survival. Transcriptional profiling indicates that antimiR-208a evokes prominent effects on cardiac gene expression; plasma analysis indicates significant changes in circulating levels of miRNAs on antimiR-208a treatment. Conclusions These studies indicate the potential of oligonucleotide-based therapies for modulating cardiac miRNAs and validate miR-208 as a potent therapeutic target for the modulation of cardiac function and remodeling during heart disease progression. PMID:21900086

  14. Macroscopic cross sections of neutron radiation capture by Pb-208, U-238 and Tc-99 nuclides in the accelerator driven subcritical core cooled with molten Pb-208 - 286

    In the paper macroscopic cross sections for several isotopes: 208Pb, 238U, 99Tc and natural mix of lead isotopes, natPb, averaged over neutron spectra of the accelerator driven subcritical core cooled with natPb or 208Pb are given. It is shown that macro cross sections for a coolant from 208Pb are by 6.2 times smaller than those for the coolant consisted from natPb. The economy of neutrons in the core cooled with molten 208Pb can be used for reducing initial fuel load, increasing plutonium breeding and enhancing transmutation of such long lived fission products as 99Tc. The values of macro cross sections calculated for 238U and 99Tc, equal to 0.6 and 0.8 barns, respectively, are comparable with the values of the same nuclide macro cross sections for neutron spectrum of the fast reactor core cooled with sodium. Good neutron and physical features of molten 208Pb permit to assume it as perspective coolant for fast reactors and accelerator driven systems. (authors)

  15. Lessons learned at 208K: Towards Debugging Millions of Cores

    Lee, G L; Ahn, D H; Arnold, D C; de Supinski, B R; Legendre, M; Miller, B P; Schulz, M J; Liblit, B

    2008-04-14

    Petascale systems will present several new challenges to performance and correctness tools. Such machines may contain millions of cores, requiring that tools use scalable data structures and analysis algorithms to collect and to process application data. In addition, at such scales, each tool itself will become a large parallel application--already, debugging the full Blue-Gene/L (BG/L) installation at the Lawrence Livermore National Laboratory requires employing 1664 tool daemons. To reach such sizes and beyond, tools must use a scalable communication infrastructure and manage their own tool processes efficiently. Some system resources, such as the file system, may also become tool bottlenecks. In this paper, we present challenges to petascale tool development, using the Stack Trace Analysis Tool (STAT) as a case study. STAT is a lightweight tool that gathers and merges stack traces from a parallel application to identify process equivalence classes. We use results gathered at thousands of tasks on an Infiniband cluster and results up to 208K processes on BG/L to identify current scalability issues as well as challenges that will be faced at the petascale. We then present implemented solutions to these challenges and show the resulting performance improvements. We also discuss future plans to meet the debugging demands of petascale machines.

  16. The Peculiar Balmer Line Profiles of OQ 208

    Marziani, P; Calvani, M; Pérez, E; Moles, M; Penston, M V

    1993-01-01

    We present spectrophotometric observations of the Broad Line Radio Galaxy OQ 208 (Mrk 668, 1404+286) obtained between 1985 and 1991. We show that the Balmer line fluxes and profile shapes undergo remarkable changes. The ratio of intensities between the broad and narrow components of Hbeta increased monotonically from 15 in 1985 to 40 in 1991. The peak of the broad components of Hbeta and Halpha were known to be strongly displaced to the red. We have discovered a correlation between the amplitude of the broad peak displacement and the luminosity of Hbeta, in the sense that the displacement is larger when the line luminosity is higher. We suggest that the observations are not compatible with either a binary Broad Line Region model or one involving ballistic acceleration of the line emitting gas. Radiative acceleration of a system of outflowing clouds readily explains the correlation between line shift and luminosity as well as the peculiar line profiles. Furthermore, it seems that most or all of the Balmer emis...

  17. Multinucleon transfer in the 136Xe+208Pb reaction

    Li, Cheng; Zhang, Fan; Li, Jingjing; Zhu, Long; Tian, Junlong; Wang, Ning; Zhang, Feng-Shou

    2016-01-01

    The dynamic mechanics in the multinucleon transfer reaction 136Xe+208Pb at an incident energy of Ec .m .=450 MeV is investigated by using the improved quantum molecular dynamics model (ImQMD). The lifetime of the neck directly influences the nucleon exchange and energy dissipation between the projectile and the target. The total-kinetic-energy-mass distributions and excitation energy division of primary binary fragments and the mass distributions of primary fragments at different impact parameters are calculated. The thermal equilibrium between two reaction partners has been observed at the lifetime of a neck larger than 480 fm /c . By using the statistical decay code gemini to describe the de-excitation process of the primary fragments, the isotope production cross sections from Pt to At are compared with the prediction by the dinuclear system and GRAZING model. The calculations indicate that the GRAZING model is suitable for estimating the isotope production cross sections only for Δ Z =-1 to +2; the DNS + gemini calculations underestimate the cross sections in the neutron-rich and neutron-deficient regions; and the ImQMD + gemini calculations give reasonable predictions of the isotope production cross sections for Δ Z =-3 to 0.

  18. Electric dipole excitation of 208Pb by polarized electron impact

    The cross sections and spin asymmetries for the excitation of 1- states in 208Pb by transversely polarized electrons with collision energy of 30-180MeV have been examined within the DWBA scattering formalism. As examples, we have considered a low-lying 1- state and also states belonging to the pygmy dipole and giant dipole resonances. The structure of these states and their corresponding transition charge and current densities have been taken from an RPA calculation within the quasiparticle phonon model. The complex-plane rotation method has been applied to achieve the convergence of the radial DWBA integrals for backward scattering. We have studied the behaviour of the cross sections and spin asymmetries as a function of electron energy and scattering angle. The role of the longitudinal and transversal contributions to the excitation has been thoroughly studied. We conclude that the spin asymmetry S, related to unpolarized outgoing electrons, is mostly well below 1% even at the backward scattering angles and its measurement provides a challenge for future experiments with polarized electrons. (orig.)

  19. Anharmonicity of multi-octupole-phonon excitations in $^{208}$Pb: analysis with multi-reference covariant density functional theory and subbarrier fusion of $^{16}$O+$^{208}$Pb

    Yao, J M

    2016-01-01

    We discuss anharmonicity of the multi-octupole-phonon states in $^{208}$Pb based on a covariant density functional theory, by fully taking into account the interplay between the quadrupole and the octupole degrees of freedom. Our results indicate the existence of a large anharmonicity in the transition strengths, even though the excitation energies are similar to those in the harmonic limit. We also show that the quadrupole-shape fluctuation significantly enhances the fragmentation of the two-octupole-phonon states in $^{208}$Pb. Using those transition strengths as inputs to coupled channels calculations, we then discuss the fusion reaction of $^{16}$O+$^{208}$Pb at energies around the Coulomb barrier. We show that the anharmonicity of the octupole vibrational excitation considerably improves previous coupled-channels calculations in the harmonic oscillator limit, significantly reducing the height of the main peak in the fusion barrier distribution.

  20. Freqüência de dermatoses infecciosas em 208 pacientes transplantados renais Frequency of infectious dermatosis in 208 renal transplant recipients

    Gérson Vettorato; André Vicente Esteves de Carvalho; Sérgio Martinez Lecompte; Elisa Gobbato Trez; Valter Duro Garcia; Elizete Keitel

    2003-01-01

    FUNDAMENTOS: Nos pacientes transplantados renais, a imunossupressão crônica acarreta maior suscetibilidade às dermatoses infecciosas. OBJETIVOS: avaliar a freqüência de dermatoses infecciosas em 208 pacientes transplantados renais no período de 12 meses e verificar a relação entre sua ocorrência e o período de tempo transcorrido desde o transplante. MÉTODO: 208 transplantados renais de uma população de 720 pacientes foram submetidos a exame dermatológico no período de um ano, tendo sido reali...

  1. Four-body effects on 9Be + 208Pb scattering and fusion around the Coulomb barrier

    Descouvemont, P; Canto, L F; Hussein, M S

    2014-01-01

    We investigate the 9Be + 208Pb elastic scattering and fusion at energies around the Coulomb barrier. The $^9$Be nucleus is described in a \\alpha + \\alpha + n three-body model, using the hyperspherical coordinate method. The scattering with $^{208}$Pb is then studied with the Continuum Discretized Coupled Channel (CDCC) method, where the \\alpha + \\alpha + n continuum is approximated by a discrete number of pseudostates. Optical potentials for the $\\alpha+^{208}$Pb and $n+^{208}$Pb systems are taken from the literature. We present elastic-scattering and fusion cross sections at different energies, and investigate the convergence with respect to the truncation of the \\alpha + \\alpha + n continuum. A good agreement with experiment is obtained, considering that there is no parameter fitting. We show that continuum effects increase at low energies.

  2. Changes in cardiac specific microRNA-208a level in peripheral blood in ST segment elevation acute myocardial infarction patients

    姚怡

    2013-01-01

    Objective To observe serum cardiac specific microRNA-208a(miR-208a) levels in ST segment elevation acute myocardial infarction(STEAMI) patients,and to explore the role of serum miR-208a levels in the diagnosis of STEAMI. Methods The serum miR-208a concentrations were assessed within 12 hours after STEAMI,while

  3. Study of fusion cross-sections of 16O + 208Pb and 28Si + 208Pb reactions by effective soft-core nucleon-nucleon interaction

    Ghodsi Omid N.

    2007-01-01

    Full Text Available In this paper, the cross-sections of fusion reactions 16O + 208Pb, 28Si + 208Pb, 40C + + 40Ca, 40Ca + 48Ca, 58Ni + 58Ni, and 16O + 154Sm at bombarding energies above and near the fusion barrier have been investigated. The fusion cross-sections have been studied by means of the Monte Carlo method and effective soft-core nucleon-nucleon interaction. One adjustable parameter was used in these calculations. This parameter can change the strength and repulsive parts of soft-core potential values. It has to be adjusted, so that the analytical results are in acceptable agreement with the experimental data. In our calculations, we have taken the range of the nucleon-nucleon soft-core interaction to be constant and equal to that of the M3Y-Raid potential. Results show that the higher values for the diffusion parameter in the Woods-Saxon potential obtained from a careful analysis of 16O + 208Pb and 28Si + 208Pb reactions are due to the many particle effects on the nucleon-nucleon potential.

  4. Clinical Analysis of 208 Cases of Pulmonary Embolism%208例肺栓塞的临床分析

    杨玥; 张爱珍; 杜永成

    2015-01-01

    目的:回顾性分析肺栓塞病例的临床特点、诊断和治疗方法,减少漏诊、误诊,提高对肺栓塞患者的诊断率和治愈率。方法对2009年1月至2013年9月入住山西省人民医院的208例肺栓塞患者的相关危险因素、临床表现、辅助检查结果及治疗方法进行回顾性分析。结果①肺栓塞患者临床表现多样,主要有呼吸困难、咳嗽、胸憋、胸痛和下肢肿胀。②肺栓塞的主要相关危险因素依次为深静脉血栓形成、高血压、吸烟和心功能不全。③常规检查项目中D-二聚体测定可作为筛查肺栓塞的敏感但非特异性指标。④溶栓序贯抗凝治疗与单纯抗凝治疗的治愈率比较二者差异有统计学意义,总有效率差异无统计学意义。结论肺栓塞临床表现及常规检查缺乏特异性,对疑诊患者应综合考虑,提高确诊率,积极治疗。%Objective To retrospectively analyze the clinical features ,diagnosis and therapy of pulmonary embolism for reduction of misdiagnosis and missed diagnosis, and for improving the cure rate.Methods The data of related risk factors, clinical manifestation, auxiliary examination results and treatment of 208 patients with pulmonary embolism in Shanxi Province people’s hospital were summarized.Results①Pulmonary embolism in patients with clinical manifestations of diversity, malnly include dyspnea, cough, chest suppress, chest paln and swelling of lower limbs.②The maln risk factors related to pulmonary embolism are deep vein thrombosis, high blood pressure, smoking and cardiac insufifciency.③Routine inspection project D-dimer determination can be used as screening sensitive but not speciifc indicator of pulmonary embolism.④Thrombolysis sequential anticoagulation compared with pure anticoagulant therapy cure rate was statistically signiifcant difference in, there was no statistically signiifcant difference in total effective rate.Conclusions clinical

  5. Neutron skin of 208Pb, nuclear symmetry energy, and the parity radius experiment

    Roca-Maza, X; Viñas, X; Warda, M

    2011-01-01

    A precise determination of the neutron skin thickness of a heavy nucleus sets a basic constraint on the nuclear symmetry energy. The parity radius experiment (PREX) may achieve it by model-independent parity-violating electron scattering on 208Pb. We investigate parity-violating electron scattering in nuclear mean field approach to allow the accurate extraction of the neutron skin thickness of 208Pb from the parity-violating asymmetry that the experiment measures. We demonstrate a close linear correlation between the parity-violating asymmetry and the neutron skin thickness in successful mean field forces as a best means to constrain the neutron skin of 208Pb from this innovative experiment. The quality of the correlation supports the commissioning of an improved PREX run to measure the parity-violating asymmetry more accurately. We study the consequences for constraining the density slope of the nuclear symmetry energy.

  6. Electrical Conductivity of ε-Iron under Shock Compression up to 208 G Pa

    毕延; 谭华; 经福谦

    2002-01-01

    The electrical conductivity of shock-compressed iron was measured up to 208 GPa by using an improved design in experiment assembly in which the iron sample was encapsulated in a single-crystal sapphire cell. High-pressure shock compressions were generated by the plate impact technique with the two-stage light-gas gun. The measured conductivity ofiron varies from 1.45 × 104 Ω- 1 cm-1 at 101 GPa and 2010 K to 7.65 × 103 Ω-1 cm-1 at 208 GPa and 5220 K. After examining these data together with those reported, we found that the Bloch-Griineisen expression is still valid at high pressures and temperatures, even up to 208GPa and 5220K, at least for ε-iron, which is significant in the field of condensed matter physics and deep interior earth science.

  7. Development of an odd-Z-projectile reaction for heavy element synthesis: 208Pb(64Ni, n)271Ds and 208Pb(65Cu, n)272111

    Seven 271Ds decay chains were identified in the bombardment of 208Pb targets with 311.5- and 314.3-MeV 64Ni projectiles using the Berkeley Gas-filled Separator. These data, combined with previous results, provide an excitation function for this reaction. From these results, an optimum energy of 321 MeV was estimated for the production of 272111 in the reaction 208Pb(65Cu, n). One decay chain was observed, resulting in a cross section of 1.7-1.4+3.9 pb. This experiment confirms the discovery of element 111 by the Darmstadt group who used the 209Bi(64Ni, n)272111 reaction

  8. Particle-hole excitations in 208Pb from the (n,n'γ) reaction

    Complete text of publication follows. The doubly closed-shell nucleus 208Pb has long held unusual importance in studies of nuclear structure, because it is anticipated that the low-lying excitations can be understood within the shell model. Recently, a revival of interest in 208Pb has occurred, as the structure of this nucleus has been studied with a variety of probes. While much of this excitement has been generated by searches for two-phonon octupole excitations (1-6), these and other studies (7-9) have provided a wealth of new information about the properties of low-lying excitations in this pivotal nucleus. Each of these detailed investigations has provided new insights about the particle-hole states in 208Pb. Rejmund et al. (10) have exploited these data to derive empirically the shell model wave functions for many states in 208Pb. Surprisingly, not much effort has been devoted to obtaining lifetimes of the excited states. Thus a series of (n,n'γ) experiments, including lifetime measurements, has been performed at the University of Kentucky. From these experiments a significant amount of information about the low-lying level structure of 208Pb has been obtained. Much of this new data takes the form of level energies, spin-parity assignments, and γ-ray branchings; however, a unique contribution of this work is the measurement of level lifetimes with the Doppler-shift attenuation method (DSAM). From these lifetimes, it is possible to obtain absolute transition rates for a large number of decays and to compare these with recent calculations. The single-particle nature of states in 208Pb has, therefore, been examined in unprecedented detail. This work was supported under grant PHY-9803784 from the U.S. National Science Foundation, the U.S. Hungarian Joint Fund, JFNo. 94a-403, and by the Hungarian Academy of Sciences. (author)

  9. Complete Electric Dipole Response and the Neutron Skin in 208Pb

    A benchmark experiment on 208Pb shows that polarized proton inelastic scattering at very forward angles including 0 deg. is a powerful tool for high-resolution studies of electric dipole (E1) and spin magnetic dipole (M1) modes in nuclei over a broad excitation energy range to test up-to-date nuclear models. The extracted E1 polarizability leads to a neutron skin thickness rskin=0.156-0.021+0.025 fm in 208Pb derived within a mean-field model [Phys. Rev. C 81, 051303 (2010)], thereby constraining the symmetry energy and its density dependence relevant to the description of neutron stars.

  10. (3He,t) reaction at 80MeV on 90Zr and 208Pb

    An experiment using the 80MeV 3He beam of the ISN cyclotron at Grenoble has been done on a target of 90Zr and another one of 208Bi. The 90Zr and 208Pb IAS angular distributions are fitted by DWBA calculations. For the previously reported Gamow Teller transition centered in 90Nb at 8.4MeV, two components are observed. The first one of M1 type is centered at 7.2MeV, the other one of unknown polarity at 9.7MeV

  11. Freqüência de dermatoses infecciosas em 208 pacientes transplantados renais

    Vettorato Gérson; Carvalho André Vicente Esteves de; Lecompte Sérgio Martinez; Trez Elisa Gobbato; Garcia Valter Duro; Keitel Elizete

    2003-01-01

    FUNDAMENTOS: Nos pacientes transplantados renais, a imunossupressão crônica acarreta maior suscetibilidade às dermatoses infecciosas. OBJETIVOS: avaliar a freqüência de dermatoses infecciosas em 208 pacientes transplantados renais no período de 12 meses e verificar a relação entre sua ocorrência e o período de tempo transcorrido desde o transplante. MÉTODO: 208 transplantados renais de uma população de 720 pacientes foram submetidos a exame dermatológico no período de um ano, tendo sido reali...

  12. Reanalysis of electron scattering and muonic x-ray data for 208Pb

    A simultaneous analysis was performed for the world's supply of data on lead 208. A total of 14 sets of electron scattering data were analyzed along with six independent muonic transition energies. A previously used Fourier Bessel expansion program was expanded to include the full set of available data. The fit was done starting with the density distribution and using 13 expansion coeffients with a cutoff radius of 11 fm. The results are tabulated for muonic energy levels. Interior charge densities of lead 208, differential cross sections, per cent of experimental deviation from the fit, and charge density are plotted. 8 references

  13. Coulomb excitation of re-accelerated 208Rn and 206Po beams

    In the present study, B(E2; 2+ → 0+) values have been measured in the 208Rn and 206Po nuclei through Coulomb excitation of re-accelerated radioactive beams in inverse kinematics at CERN-ISOLDE. The resulting B(E2; 2+ → 0+) in 208Rn is ∼ 0.08 e2b2. These nuclei lie in, or at the boundary of the region where seniority scheme should persist. However, contributions from collective excitations may be present when moving away from the N = 126 shell closure. To date, surprisingly little is known of the transition probabilities between the low-spin states in this region. (authors)

  14. Sensitivity of the electric dipole polarizability to the neutron skin thickness in ${}^{208}$Pb

    Roca-Maza, X; Colo', G; Nazarewicz, W; Paar, N; Piekarewicz, J; Reinhard, P -G; Vretenar, D; 10.1063/1.4764239

    2012-01-01

    The static dipole polarizability, $\\alpha_{\\rm D}$, in ${}^{208}$Pb has been recently measured with high-resolution via proton inelastic scattering at the Research Center for Nuclear Physics (RCNP). This observable is thought to be intimately connected with the neutron skin thickness, $r_{\\rm skin}$, of the same nucleus and, more fundamentally, it is believed to be associated with the density dependence of the nuclear symmetry energy. The impact of $r_{\\rm skin}$ on $\\alpha_{\\rm D}$ in ${}^{208}$Pb is investigated and discussed on the basis of a large and representative set of relativistic and non-relativistic nuclear energy density functionals (EDF).

  15. Triple-differential cross section of the 208Pb(6Li, αd)208 Pb Coulomb breakup and astrophysical S-factor of the d(α,γ)6 Li reaction at extremely low energies

    A method of calculation of the triple-differential cross section of the 208Pb(6Li, αd)208Pb Coulomb breakup at astrophysically relevant energies E of the relative motion of the breakup fragments, taking into account the three-body (α - d - 208Pb) Coulomb effects and the contributions from the E1- and E2- multipoles, including their interference, has been proposed. The new results for the astrophysical S-factor of the direct radiative capture d(α, γ)6 Li reaction at E ≤ 250 keV have been obtained. It is shown that the experimental triple-differential cross section of the 208Pb(6Li, αd)208Pb Coulomb breakup can also be used to give information about the value of the modulus squared of the nuclear vertex constant for the virtual 6Li → α + d. (author)

  16. 5 CFR 892.208 - Can I change my enrollment from self and family to self only at any time?

    2010-01-01

    ... family to self only at any time? 892.208 Section 892.208 Administrative Personnel OFFICE OF PERSONNEL... self and family to self only at any time? If you are participating in premium conversion you may change your FEHB enrollment from self and family to self only under either of the following circumstances:...

  17. 49 CFR 40.208 - What problem requires corrective action but does not result in the cancellation of a test?

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false What problem requires corrective action but does not result in the cancellation of a test? 40.208 Section 40.208 Transportation Office of the Secretary of Transportation PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING PROGRAMS...

  18. 30 CFR 208.4 - Royalty oil sales to eligible refiners.

    2010-07-01

    ...) Determination to take royalty oil in kind. The Secretary may evaluate crude oil market conditions from time to... Royalty Oil” required by 30 CFR 208.5. (b) Sale to eligible refiners. (1) Upon a determination by the... some or all of the royalty oil accruing to the United States from oil and gas leases on Federal...

  19. 5 CFR 842.208 - Firefighters, law enforcement officers, and nuclear materials couriers.

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Firefighters, law enforcement officers... ANNUITY Eligibility § 842.208 Firefighters, law enforcement officers, and nuclear materials couriers. (a... misconduct, is entitled to an annuity— (1) After completing any combination of service as a...

  20. 44 CFR 208.23 - Allowable costs under Preparedness Cooperative Agreements.

    2010-10-01

    ... Cooperative Agreement and any required matching funds under 44 CFR 13.22 and this section to pay reasonable... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Allowable costs under... RESCUE RESPONSE SYSTEM Preparedness Cooperative Agreements § 208.23 Allowable costs under...

  1. Structures excited by heavy ions in 208Pb target. Interpretation involving giant resonances and multiphonon excitations

    Kinetic energy spectra of heavy fragments from the 36Ar+208Pb reaction at 11 MeV/n and 20Ne+208Pb at 30 MeV/n have been measured with a time of flight spectrometer. Numerous structures ranging up to 100 MeV excitation energy are observed in the inelastic and few nucleon transfer channels. These structures are shown to be due to an excitation of the 208Pb target nucleus and not to decay products of excited ejectiles. Positions of low lying structures (E*208Pb. The linear response of the target nucleus to the external field created by the projectile is calculated microscopically in the Random Phase Approximation resolved using the Green's function method in coordinate space with a Skyrme interaction. In the independant quasi-boson approximation multiple phonon excitations reproduce the main features of the experimental data and appear as a plausible interpretation of the observed structures. The theoretical calculations and experimental observations suggest that multiphonon excitations play an important role in heavy ion reactions and contribute strongly to the kinetic energy dissipation

  2. 31 CFR Appendix A to Part 208 - Model Disclosure for Use Until ETA SM Becomes Available

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Model Disclosure for Use Until ETA SM Becomes Available A Appendix A to Part 208 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT...

  3. 31 CFR Appendix B to Part 208 - Model Disclosure for Use After ETA SM Becomes Available

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Model Disclosure for Use After ETA SM Becomes Available B Appendix B to Part 208 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL SERVICE, DEPARTMENT OF THE TREASURY FINANCIAL MANAGEMENT SERVICE MANAGEMENT...

  4. 48 CFR 253.208-1 - DD Form 448, Military Interdepartmental Purchase Request.

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false DD Form 448, Military... DD Form 448, Military Interdepartmental Purchase Request. Follow the procedures at PGI 253.208-1 for use of DD Form 448....

  5. 42 CFR 57.208 - Health professions student loan promissory note and disclosure requirements.

    2010-10-01

    ... in Lending Regulation Z (12 CFR part 226). (Approved by the Office of Management and Budget under... 42 Public Health 1 2010-10-01 2010-10-01 false Health professions student loan promissory note and..., SCHOLARSHIPS AND STUDENT LOANS Health Professions Student Loans § 57.208 Health professions student...

  6. 7 CFR 761.208 - Target participation rates for socially disadvantaged groups.

    2010-01-01

    ... 7 Agriculture 7 2010-01-01 2010-01-01 false Target participation rates for socially disadvantaged... Farm Loan Programs Funds to State Offices § 761.208 Target participation rates for socially disadvantaged groups. (a) General. (1) The Agency establishes target participation rates for providing FO and...

  7. 49 CFR 24.208 - Aliens not lawfully present in the United States.

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Aliens not lawfully present in the United States... Requirements § 24.208 Aliens not lawfully present in the United States. (a) Each person seeking relocation... of an individual, that he or she is either a citizen or national of the United States, or an...

  8. Production and identification of new, neutron-rich nuclei in the $^{208}$Pb region

    Rykaczewski, K; Plochocki, A; Karny, M; Szerypo, J; Evensen, A H; Kugler, E; Lettry, Jacques; Ravn, H L; Van Duppen, P; Andreyev, A; Huyse, M; Wöhr, A; Jokinen, A; Äystö, J; Nieminen, A; Huhta, M; Ramdhane, M; Walter, G; Hoff, P

    2000-01-01

    The recently developed methods allowing the experimental studies on new neutron-rich nuclei beyond doubly-magic $^{208}$Pb are briefly described. An identification of new neutron-rich isotopes $^{215}$Pb and $^{217}$Bi, and new decay properties of $^{216}$Bi studied by means of a pulsed release element selective technique at PS Booster- ISOLDE are reported. (9 refs).

  9. Radiationless transition probabilities in muonic 208Pb, 232Th, and 238U

    The probabilities for non-radiative (n.r.) excitations Pn.r. in the muonic nuclides 208Pb, 232Th, and 238U have been determined for (μ-, γγ)-measurements by comparing the intensities of muonic X-ray transitions in single and coincidence spectra. The value of Pn.r. (3p→1s), measured for the first time, is about 90% for the actinides 232Th and 238U, but only about 8% for 208Pb. The value of Pn.r. (3d→1s) is found to be 10% for 233Th, 13% for 238U, and about 4% for 208Pb. For 208Pb a vanishing strength of the n.r. decay of the 2p-level is found, while for 232Th and for 238U n.r. strengths of about 20% and 26%, respectively, are observed. By regarding two subcomplexes of the 2p→1s transitions leading to different mean excitation energies the n.r. transition probabilities were found to be different for 238U only, 21.6% and 31.1%, respectively. (orig.)

  10. New Isomers in the Neutron-Rich Region Beyond 208Pb

    Gottardo A.

    2014-03-01

    Full Text Available The region of neutron-rich nuclei beyond 208Pb has been very difficult to explore due to its high mass and exoticity. However, recent experimental improvements allowed one to perform a quite extended isomer decay spectroscopy of these nuclei.

  11. THREE-VALENCE-PARTICE NUCLEI IN THE 132Sn and 208 Pb REGIONS

    Full text: Among the nuclei of the nuclear charter, the nuclei around closed shells play a key role in understanding the effective interaction properties between nucleons far from the valley of stability; particulary, the nuclei of a few valence nucleons around doubly magic 208 28Pb126 and 132 50Sn82 nuclei. The interest of both regions 208Pb and 132Sn lies in the fact that there is a great similarity between their nuclear spectroscopic properties. The single energy gaps in both cases are comparable and the orbitals above and below these gaps are similarly ordered. Each single state in the region of 132Sn has its counterpart in that of 208Pb. An interesting predictive consequence, the interactions of the Sn region, difficult region to reach experimentally, can be estimated from their corresponding ones constructed to describe the nuclei of the Pb region. Because of the importance of the similarity existing between the spectroscopy of these two regions, we are interested in nuclei with three valence nucleons in the lead and Tin regions on the basis of experimental data (spin, parity and energy states). In this context, the theoretical study is conducted within the shell model using the MSDI interaction for the energy spectra calculations of the studied nuclei. The calculated results are in good agreement with the available experimental data and show evidence that a close resemblance between the spectroscopy of these two regions persists when moving away from the immediate neighbours of doubly magic 132Sn and 208Pb.

  12. 21 CFR 208.20 - Content and format of a Medication Guide.

    2010-04-01

    ... Section 208.20 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES... Medication Guide has been approved by the U.S. Food and Drug Administration” shall appear at the bottom of a... specific, important risks are known; (iii) A statement of the risks of the drug product to nursing...

  13. Elastic scattering of 17O+208Pb at energies near the Coulomb barrier

    Torresi D.

    2016-01-01

    Full Text Available Within the frame of the commissioning of a new experimental apparatus EXPADES we undertook the measurement of the elastic scattering angular distribution for the system 17O+208Pb at energy around the Coulomb barrier. The reaction dynamics induced by loosely bound Radioactive Ion Beams is currently being extensively studied [4]. In particular the study of the elastic scattering process allows to obtain direct information on the total reaction cross section of the exotic nuclei. In order to understand the effect of the low binding energy on the reaction mechanism it is important to compare radioactive weakly bound nuclei with stable strongly-bound nuclei. In this framework the study of the 17O+208Pb elastic scattering can be considered to be complementary to a previous measurement of the total reaction cross section for the system 17F+208Pb at energies of 86, 90.4 MeV [5, 6]. The data will be compared with those obtained for the neighboring systems 16,18O+208Pb and others available in literature.

  14. 34 CFR 403.208 - What are the requirements regarding supplanting?

    2010-07-01

    ...) OFFICE OF VOCATIONAL AND ADULT EDUCATION, DEPARTMENT OF EDUCATION STATE VOCATIONAL AND APPLIED TECHNOLOGY... Applied Technology Education Program? § 403.208 What are the requirements regarding supplanting? (a) The... 34 Education 3 2010-07-01 2010-07-01 false What are the requirements regarding supplanting?...

  15. Deuteron excitation of the isoscalar breathing mode resonance in 90Zr, 120Sn, 208Pb

    With the new 108 MeV deuteron beam of the Orsay synchrocyclotron and the new experimental set up which allow measurements without background for angles as small as 40, a systematic study of the breathing mode has been undertaken and the results on 90Zr, 120Sn and 208Pb are reported

  16. 5 CFR 792.208 - What is the definition of executive agency?

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false What is the definition of executive... Legislation and to Whom Does It Apply? § 792.208 What is the definition of executive agency? The term... Accounting Office....

  17. 40 CFR 33.208 - How long does an MBE or WBE certification from EPA last?

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false How long does an MBE or WBE... ENVIRONMENTAL PROTECTION AGENCY PROGRAMS Certification § 33.208 How long does an MBE or WBE certification from EPA last? Once EPA OSDBU certifies an entity to be an MBE or WBE by placing it on the EPA OSDBU...

  18. 14 CFR 302.208 - Petitions for oral presentation or judge's decision.

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Petitions for oral presentation or judge's... TRANSPORTATION (AVIATION PROCEEDINGS) PROCEDURAL REGULATIONS RULES OF PRACTICE IN PROCEEDINGS Rules Applicable to... Applications § 302.208 Petitions for oral presentation or judge's decision. (a) Any person may file a...

  19. MicroRNA-208b Alleviates Post-Infarction Myocardial Fibrosis in a Rat Model by Inhibiting GATA4

    Zhou, Chaoyuan; Cui, Qintao; Su, Guobao; Guo, Xiaoliang; Liu, Xiaochen; Zhang, Jie

    2016-01-01

    Background Myocardial infarction affects the health of many people. Post-infarction myocardial fibrosis has attracted much attention, but details of the mechanism remain elusive. In this study, the role of microRNA-208b (miR-208b) in modulating post-infarction myocardial fibrosis and the related mechanism were investigated. Material/Methods A rat model of myocardial infarction induced by ligating the left anterior descending artery was used to analyze the expression and roles of miR-208b by overexpression with the lentivirus vector of pre-miR-208b. Myocardial function was assessed and the expression of fibrosis-related factors type I collagen (COL1) and ACTA2 (alias αSMA) was detected. Myocardial fibroblasts isolated from newborn rats were transfected with luciferase reporter vectors containing wild-type or mutant Gata4 3′ UTR to verify the relationship between Gata4 and miR-208b. We then transfected the specific small interference RNA of Gata4 to detect changes in COL1 and ACTA2. Results miR-208b was down-regulated in hearts of model rats (P<0.01). Overexpressing miR-208b improved myocardial functions, such as reducing the infarction area (P<0.05) and promoting LVEF and LVFS (P<0.01), and inhibited COL1 and ACTA2 (P<0.01). Luciferase reporter assay proved Gata4 to be the direct target of miR-208b, with the target sequence in the 3′UTR. Inhibiting GATA4 resulted in the down-regulation of COL1 and ACTA2, suggesting that the role of miR-208b was achieved via regulating GATA4. Conclusions This study demonstrates the protective function of miR-208b via GATA4 in post-infarction myocardial fibrosis, providing a potential therapeutic target for treating myocardial fibrosis. PMID:27236543

  20. Freqüência de dermatoses infecciosas em 208 pacientes transplantados renais Frequency of infectious dermatosis in 208 renal transplant recipients

    Gérson Vettorato

    2003-06-01

    Full Text Available FUNDAMENTOS: Nos pacientes transplantados renais, a imunossupressão crônica acarreta maior suscetibilidade às dermatoses infecciosas. OBJETIVOS: avaliar a freqüência de dermatoses infecciosas em 208 pacientes transplantados renais no período de 12 meses e verificar a relação entre sua ocorrência e o período de tempo transcorrido desde o transplante. MÉTODO: 208 transplantados renais de uma população de 720 pacientes foram submetidos a exame dermatológico no período de um ano, tendo sido realizados exames anatomopatológico micológico, bacteriológico e/ou cultural das lesões suspeitas. RESULTADOS: a freqüência de dermatoses infecciosas nessa população foi de 89,4%. As infecções fúngicas, virais, bacterianas e parasitárias mais freqüentes foram pitiríase versicolor (17,8%, verruga vulgar (32,2%, foliculite (4,3% e escabiose (3,8%. CONCLUSÃO: as dermatoses infecciosas são freqüentes nos pacientes transplantados renais, e sua ocorrência aumenta progressivamente conforme o tempo transcorrido a partir do transplante, sendo importante o acompanhamento dermatológico desses pacientes.BACKGROUND: Chronic immunosuppressive therapy predisposes renal transplant recipients to a heightened susceptibility to infectious dermatoses. OBJECTIVES: evaluate the frequency of infectious dermatoses in 208 renal transplant recipients over a 12-month period and verify the relation between the onset of dermatoses and the time elapsed since transplantation. METHOD: 208 renal transplant recipients, taken from a population of 720 transplant recipients, received a dermatological examination for a year. Dermatopathological examination, mycological examination, bacteriologic examination, and cultures were taken from suspected lesions. RESULTS: the prevalence of infectious dermatosis was 89.4% in this population. The more frequent fungal, viral and bacterial infections were respectively pitiyriasis versicolor (17.8%, warts (32.2%, and folliculitis

  1. Schottky mass measurement of the 208Hg isotope: implication for the proton-neutron interaction strength around doubly magic 208Pb.

    Chen, L; Litvinov, Yu A; Plass, W R; Beckert, K; Beller, P; Bosch, F; Boutin, D; Caceres, L; Cakirli, R B; Carroll, J J; Casten, R F; Chakrawarthy, R S; Cullen, D M; Cullen, I J; Franzke, B; Geissel, H; Gerl, J; Górska, M; Jones, G A; Kishada, A; Knöbel, R; Kozhuharov, C; Litvinov, S A; Liu, Z; Mandal, S; Montes, F; Münzenberg, G; Nolden, F; Ohtsubo, T; Patyk, Z; Podolyák, Zs; Propri, R; Rigby, S; Saito, N; Saito, T; Scheidenberger, C; Shindo, M; Steck, M; Ugorowski, P; Walker, P M; Williams, S; Weick, H; Winkler, M; Wollersheim, H-J; Yamaguchi, T

    2009-03-27

    Time-resolved Schottky mass spectrometry has been applied to uranium projectile fragments which yielded the mass value for the 208Hg (Z=80, N=128) isotope. The mass excess value of ME=-13 265(31) keV has been obtained, which has been used to determine the proton-neutron interaction strength in 210Pb, as a double difference of atomic masses. The results show a dramatic variation of the strength for lead isotopes when crossing the N=126 neutron shell closure, thus confirming the empirical predictions that this interaction strength is sensitive to the overlap of the wave functions of the last valence neutrons and protons. PMID:19392270

  2. miR-208-3p promotes hepatocellular carcinoma cell proliferation and invasion through regulating ARID2 expression

    MicroRNAs (miRNAs) are small non-coding RNAs that negatively regulate gene expression at post-transcriptional level. miRNA dysregulation plays a causal role in cancer progression. In this study, miR-208-3p was highly expressed and directly repressed ARID2 expression. As a result, ARID2 expression in hepatocellular carcinoma (HCC) was decreased. In vitro, miR-208-3p down-regulation and ARID2 over-expression elicited similar inhibitory effects on HCC cell proliferation and invasion. In vivo test results revealed that miR-208-3p down-regulation inhibited HCC tumorigenesis in Hep3B cells. Moreover, ARID2 was possibly a downstream element of transforming growth factor beta1 (TGFβ1)/miR-208-3p/ARID2 regulatory pathway. These findings suggested that miR-208-3p up-regulation is associated with HCC cell progression and may provide a new target for liver cancer treatment. - Highlights: • miR-208-3p was highly expressed and directly repressed the expression of ARID2 in HCC. • miR-208-3p contributed to HCC cell progression both in vitro and in vivo. • Over-expression of ARID2 inhibited the HCC cell proliferation and invasion. • Restoration of ARID2 partly reversed the the effect of miR-208-3p down-regulation on HCC cells. • Newly regulatory pathway: miR-208-3p mediated the repression of ARID2 by TGFβ1 in HCC cells

  3. Intratumoral estrogen sulfotransferase induction contributes to the anti-breast cancer effects of the dithiocarbamate derivative TM208

    Ji, Xi-wei; Chen, Guang-ping; Song, Yan; Hua, Ming; Wang, Li-jie; Li, Liang; Yuan, Yin; Wang, Si-yuan; Zhou, Tian-yan; Lu, Wei

    2015-01-01

    Aim: Sulfotransferase-catalyzed sulfation is the most important pathway for inactivating estrogens. Thus, activation of estrogen sulfotransferase (EST) may be an alternative approach for the treatment of estrogen-dependent breast cancer. In this study we investigated the involvement of EST in anti-breast cancer effects of the dithiocarbamate derivative TM208 in vitro and in vivo. Methods: The viability of human breast cancer MCF-7 cells was determined using a SBB assay. Nude mice bearing MCF-7 cells were orally administered TM208 (50 and 150 mg·kg−1·d−1) for 18 days. The xenograft tumors and uteri were collected. The mRNA expression of EST was examined with real-time PCR. EST protein was detected with Western blot, ELISA or immunohistochemical staining assays. A radioactive assay was used to measure the EST activity. Uterotropic bioassay was used to examine the uterine estrogen responses. Results: Treatment with TM208 (10, 15 and 20 μmol/L) concentration-dependently increased EST expression in MCF-7 cells in vitro. Co-treatment with triclosan, an inhibitor of sulfonation, abolished TM208-induced cytotoxicity in MCF-7 cells. TM208 exhibited an apparent anti-estrogenic property: it exerted more potent cytotoxicity in E2-treated MCF-7 cells. In the nude mice bearing MCF-7 cells, TM208 administration time-dependently increased the expression and activity of EST, and blocked the gradual increase of E2 concentration in the xenograft tumors. Furthermore, TM208 administration blocked the estrogens-stimulated uterine enlargement. Tamoxifen, a positive control drug, produced similar effects on the expression and activity of EST in vitro and in vivo. Conclusion: The induction of EST and reduction of estrogen concentration contribute to the anti-breast cancer action of TM208 and tamoxifen. TM208 may be developed as anticancer drug for the treatment of estrogen receptor-positive breast cancer. PMID:25937633

  4. miR-208-3p promotes hepatocellular carcinoma cell proliferation and invasion through regulating ARID2 expression

    Yu, Peng; Wu, Dingguo; You, Yu; Sun, Jing; Lu, Lele; Tan, Jiaxing; Bie, Ping, E-mail: bieping2010@163.com

    2015-08-15

    MicroRNAs (miRNAs) are small non-coding RNAs that negatively regulate gene expression at post-transcriptional level. miRNA dysregulation plays a causal role in cancer progression. In this study, miR-208-3p was highly expressed and directly repressed ARID2 expression. As a result, ARID2 expression in hepatocellular carcinoma (HCC) was decreased. In vitro, miR-208-3p down-regulation and ARID2 over-expression elicited similar inhibitory effects on HCC cell proliferation and invasion. In vivo test results revealed that miR-208-3p down-regulation inhibited HCC tumorigenesis in Hep3B cells. Moreover, ARID2 was possibly a downstream element of transforming growth factor beta1 (TGFβ1)/miR-208-3p/ARID2 regulatory pathway. These findings suggested that miR-208-3p up-regulation is associated with HCC cell progression and may provide a new target for liver cancer treatment. - Highlights: • miR-208-3p was highly expressed and directly repressed the expression of ARID2 in HCC. • miR-208-3p contributed to HCC cell progression both in vitro and in vivo. • Over-expression of ARID2 inhibited the HCC cell proliferation and invasion. • Restoration of ARID2 partly reversed the the effect of miR-208-3p down-regulation on HCC cells. • Newly regulatory pathway: miR-208-3p mediated the repression of ARID2 by TGFβ1 in HCC cells.

  5. Event by Event Analysis of High Multiplicity Events Produced in 158 A GeV/c 208 Pb- 208 Pb Collisions

    Ahmad, Shakeel; Kumar, Ashwini; Chaturvedi, O S K; Ahmad, A; Zafar, M; Irfan, M; Singh, B K

    2015-01-01

    An extensive analysis of individual high multiplicity events produced in 158 A GeV /c 208Pb- 208Pb collisions is carried by adopting different methods to examine the anomalous behavior of these rare events. A method of selecting the events with densely populated narrow regions or spikes out of a given sample of collision events is discussed.Employing this approach two events with large spikes in their eta- and phi- distributions are selected for further analysis. For the sake of comparison, another two events which do not exhibit such spikes are simultaneously analyzed. The findings suggest that the systematic studies of particle density fluctuations in one- and two-dimensional phase-spaces and comparison with those obtained from the studies of correlation free Monte Carlo events, would be useful for identifying the events with large dynamical fluctuations. Formation of clusters or jet like phenomena in multihadronic final states in individual events is also discussed and the experimental findings are compare...

  6. Time-dependent Hartree-Fock calculations for multinucleon transfer processes in $^{40, 48}$Ca+$^{124}$Sn, $^{40}$Ca+$^{208}$Pb, and $^{58}$Ni+$^{208}$Pb reactions

    Sekizawa, Kazuyuki

    2013-01-01

    Multinucleon transfer processes in heavy-ion reactions at energies slightly above the Coulomb barrier are investigated in a fully microscopic framework of the time-dependent Hartree-Fock (TDHF) theory. Transfer probabilities are calculated from the TDHF wave function after collision using the projection operator method which has recently been proposed by Simenel (C. Simenel, Phys. Rev. Lett. 105, 192701 (2010)). We show results of the TDHF calculations for transfer cross sections of the reactions of $^{40,48}$Ca+$^{124}$Sn at $E_{lab}=$ 170, 174 MeV, $^{40}$Ca+$^{208}$Pb at $E_{lab}=$ 235, 249 MeV, and $^{58}$Ni+$^{208}$Pb at $E_{lab}=$ 328.4 MeV, for which measurements are available. We find the transfer processes show different behaviors depending on the $N/Z$ ratios of the projectile and the target, and the product of the charge numbers, $Z_P Z_T$. When the projectile and the target have different $N/Z$ ratios, fast transfer processes of a few nucleons towards the charge equilibrium of the initial system o...

  7. Broad spectrum moderators and advanced reflector filters using 208Pb

    Schönfeldt, Troels; Batkov, K.; Klinkby, Esben Bryndt;

    2015-01-01

    Cold and thermal neutrons used in neutrons scattering experiments are produced in nuclear reactors and spallation sources. The neutrons are cooled to thermal or cold temperatures in thermal and cold moderators, respectively. The present study shows that it is possible to exploit the poor...... thermalizing property of 208Pb to design a broad spectrum moderator, i.e. a moderator which emits thermal and cold neutrons from the same position. Using 208Pb as a reflector filter material is shown to be slightly less efficient than a conventional beryllium reflector filter. However, when surrounding the...... reflector filter by a cold moderator it is possible to regain the neutrons with wavelengths below the Bragg edge, which are suppressed in the beryllium reflector filter. In both the beryllium and lead case surrounding the reflector filter with a cold moderator increases the cold brightness significantly...

  8. All-Solid-State Multi-wavelength Laser System from 208 to 830 nm

    ZHAO Shang-Hong; CHEN Guo-Fu; ZHAO Wei; WANG Yi-Shan; YU Lian-Jun

    2001-01-01

    Four-wavelength lasers from the near-infrared to deep-ultraviolet range, 532, 830, 415 and 208nm, have been developed in one all-solid-state laser system. The laser system is pumped by a diode-Q-YLF laser at 532nm,a Ti:sapphire laser, and the nonlinear second-harmonic-generation crystals LBO and BBO are used to generate different wavelengths. Maximum average powers (repetition rate 1 kHz) of 1.1 W at 830nm, 380m W at 415nm and 39mW at 208nm are obtained when the pumping power is 3.6 W. The main characteristics of this system are presented.

  9. A simple functional form for proton-208Pb total reaction cross sections

    A simple functional form has been found that gives a good representation of the total reaction cross sections for the scattering from 208Pb of protons with energies in the range 30 to 300 MeV. The ratios of the total reaction cross sections calculated under this approximations compared well (to within a few percent) to those determined from the microscopic optical model potentials

  10. Influence of Shell on Pre-scission Particle Emission of a Doubly Magic Nucleus 208Pb

    YE Wei

    2004-01-01

    Using Smoluchowski equation, we study the shell effects on the emission of light particles in the fission process of a doubly magic nucleus 208 pb. Calculated results show that shell has a considerable effect on the neutron emission and that shell effect gradually becomes weak with increasing excitation energy. In addition, a dependence of shell effects in the neutron emission on the angular momentum has been found.

  11. Lowered fusion cross section in the quadruply magic heavy-ion system 48Ca+208Pb

    The results of radioanalytical mass yield distribution studies of the reaction of 48Ca with thick 208Pb targets at the effective laboratory energies of 255 and 300 MeV are reported. Complete fusion cross sections are found to be significantly lower than those found for 40Ar induced reactions with non-magic targets apparently showing the effect of the projectile and target nuclear structure on such cross sections. (Auth.)

  12. A semiclassical estimate of the Coulomb excitation of the giant dipole resonance in 208 Pb

    A semiclassical approach to study pure Coulomb excitation of 208 Pb giant dipole isovector resonance is examined. Medium energy projectiles are considered and also the target excitation to be described by a simple Goldhaber-Teller model is assumed. It is shown that the main features concerning the angular distribution are obtained in the angular range described by the model and an estimate is made of the pure Coulomb dipole contribution to the measured cross sections. (author)

  13. Forward angle measurements of 60 MeV/nucleon 40Ar peripheral interactions on 208Pb

    Velocity and angular distributions of projectile-like fragments were measured between θlab = O0 and 40 (inside the grazing angle) for the 40Ar + 208Pb system at 60 MeV/nucleon using a magnetic spectrometer. Velocity spectra are similar to those obtained at larger angles while the angular distributions, very forward peaked for light nuclei, tend to become flat for the heaviest fragments. The influence of the Coulomb and nuclear deflection of the fragments is discussed

  14. Is thyroid stunning clinically relevant? A retrospective analysis of 208 patients

    ELBA C. S. C. ETCHEBEHERE; Santos, Allan O.; de Matos, Patrícia S.; Lígia V. M. Assumpção; Maria Cecília V. L. Lima; Mariana C.L. Lima; Laura S. Ward

    2014-01-01

    Objective : Current guidelines have advised against the performance of 131I-iodide diagnostic whole body scintigraphy (dxWBS) to minimize the occurrence of stunning, and to guarantee the efficiency of radioiodine therapy (RIT). The aim of the study was to evaluate the impact of stunning on the efficacy of RIT and disease outcome.Subjects and methods : This retrospective analysis included 208 patients with differentiated thyroid cancer managed according to a same protocol and followed up for 1...

  15. Lead containing mainly isotope 208Pb. New neutron moderator, coolant and reflector for innovative nuclear reactors

    As a rule materials of small atomic weight (light and heavy water, graphite and so on) are used as neutron moderators and reflectors. A new very heavy atomic weight moderator is proposed - radiogenic lead consisting mainly of isotope 208Pb. It is characterized by extremely low neutron radioactive capture cross-section (0.23 mbarn for thermal neutrons, i.e. less than that for graphite and deuterium) and highest albedo of thermal neutrons. It is evaluated that use of the radiogenic lead enables a slowing of the chain reaction of prompt neutrons in a fast reactor. This can increase safety of the fast reactor as well reduce requirements pertaining to the technology of its fuel fabrication. Radiogenic lead with high 208Pb content as a liquid metal coolant of fast reactors helps to achieve a favorable (negative) coolant temperature reactivity coefficient. It is noteworthy that radiogenic lead with a large 208Pb content may be extracted from thorium (as well thorium-uranium) ores without isotope separation. This has been confirmed experimentally by an investigation performed at San Paula University, Brazil. (author)

  16. Constraints on neutron skin thickness in 208Pb and density-dependent symmetry energy

    Dong, Jianmin; Gu, Jianzhong

    2015-01-01

    Accurate knowledge about the neutron skin thickness $\\Delta R_{np}$ in $^{208}$Pb has far-reaching implications for different communities of nuclear physics and astrophysics. Yet, the novel Lead Radius Experiment (PREX) did not yield stringent constraint on the $\\Delta R_{np}$ recently. We employ a more practicable strategy currently to probe the neutron skin thickness of $^{208}$Pb based on a high linear correlation between the $\\Delta R_{np}$ and $J-a_{\\text{sym}}$, where $J$ and $a_{\\text{sym}}$ are the symmetry energy (coefficient) of nuclear matter at saturation density and of $^{208}$Pb. An accurate $J-a_{\\text{sym}}$ thus places a strong constraint on the $\\Delta R_{np}$. Compared with the parity-violating asymmetry $A_{\\text{PV}}$ in the PREX, the reliably experimental information on the $J-a_{\\text{sym}}$ is much more easily available attributed to a wealth of measured data on nuclear masses and on decay energies. The density dependence of the symmetry energy is also well constrained with the $J-a_{\\...

  17. Void effect analysis of Pb-208 of fast reactors with modified CANDLE burn-up scheme

    Widiawati, Nina, E-mail: nina-widiawati28@yahoo.com; Su’ud, Zaki, E-mail: szaki@fi.itb.ac.id [Nuclear Physics and Biophysics Research Group, Faculty of Mathematics and Natural Science, Bandung Institute of Technology Jalan Ganesha 10, Bandung (Indonesia)

    2015-09-30

    Void effect analysis of Pb-208 as coolant of fast reactors with modified candle burn-up scheme has been conducted. Lead cooled fast reactor (LFR) is one of the fourth-generation reactor designs. The reactor is designed with a thermal power output of 500 MWt. Modified CANDLE burn-up scheme allows the reactor to have long life operation by supplying only natural uranium as fuel cycle input. This scheme introducing discrete region, the fuel is initially put in region 1, after one cycle of 10 years of burn up it is shifted to region 2 and region 1 is filled by fresh natural uranium fuel. The reactor is designed for 100 years with 10 regions arranged axially. The results of neutronic calculation showed that the void coefficients ranged from −0.6695443 % at BOC to −0.5273626 % at EOC for 500 MWt reactor. The void coefficients of Pb-208 more negative than Pb-nat. The results showed that the reactors with Pb-208 coolant have better level of safety than Pb-nat.

  18. Void effect analysis of Pb-208 of fast reactors with modified CANDLE burn-up scheme

    Widiawati, Nina; Su'ud, Zaki

    2015-09-01

    Void effect analysis of Pb-208 as coolant of fast reactors with modified candle burn-up scheme has been conducted. Lead cooled fast reactor (LFR) is one of the fourth-generation reactor designs. The reactor is designed with a thermal power output of 500 MWt. Modified CANDLE burn-up scheme allows the reactor to have long life operation by supplying only natural uranium as fuel cycle input. This scheme introducing discrete region, the fuel is initially put in region 1, after one cycle of 10 years of burn up it is shifted to region 2 and region 1 is filled by fresh natural uranium fuel. The reactor is designed for 100 years with 10 regions arranged axially. The results of neutronic calculation showed that the void coefficients ranged from -0.6695443 % at BOC to -0.5273626 % at EOC for 500 MWt reactor. The void coefficients of Pb-208 more negative than Pb-nat. The results showed that the reactors with Pb-208 coolant have better level of safety than Pb-nat.

  19. Electric Dipole Polarizability in ${}^{208}$Pb: insights from the Droplet Model

    Roca-Maza, X; Viñas, X; Brenna, M; Colò, G; Agrawal, B K; Paar, N; Piekarewicz, J; Vretenar, D

    2013-01-01

    We study the electric dipole polarizability $\\alpha_D$ in ${}^{208}$Pb based on the predictions of a large and representative set of relativistic and non-relativistic nuclear mean field models. We adopt the droplet model as a guide to better understand the correlations between $\\alpha_D$ and other isovector observables. Insights from the droplet model suggest that the product of $\\alpha_D$ and the nuclear symmetry energy at saturation density $J$ is much better correlated with the neutron skin thickness $\\Delta r_{np}$ of ${}^{208}$Pb than the polarizability alone. Correlations of $\\alpha_D J$ with $\\Delta r_{np}$ and with the slope of the symmetry energy $L$ suggest that $\\alpha_D J$ is a strong isovector indicator. Hence, we explore the possibility of constraining the isovector sector of thenuclear energy density functional by comparing our theoretical predictions against measurements of both $\\alpha_D$ and the parity-violating asymmetry in ${}^{208}$Pb. We find that the recent experimental determination of...

  20. The First Outbreak Caused by Acinetobacter baumannii ST208 and ST195 in China

    Junyan Qu

    2016-01-01

    Full Text Available This study aimed to analyze the clinical characteristics of patients and molecular mechanisms of the first outbreak mainly caused by sequence types (STs 208 multidrug resistant (MDR Acinetobacter baumannii in China. A total of 10 clinical samples were collected from 5 patients who were involved in the outbreak. Bacterial identification and antibiotic sensitivity tests were performed by the VITEK-2 COMPACT automated system. MICs of tigecycline for clinical isolates were determined using broth microdilution. The clonal relatedness of A. baumannii clinical isolates in our local settings was determinated by pulsed-field gel electrophoresis (PFGE and multilocus sequence typing (MLST. A total of 7 A. baumannii strains were isolated and all were MDR strains; two of them were carbapenem-nonsusceptible strains. blaOXA-23 was the only acquired carbapenemase gene in the isolates. The isolates belonged to a single clonal pulsotype determined by PFGE and two sequences types (STs determined by MLST. The isolates belonged to the globally disseminated clonal complex 92, among which ST195 and ST208 were the most common sequence types (71.43% and 28.57%. The outbreak was successfully controlled by stringent infection control measures, especially improving the hand hygiene compliance and enhancing antimicrobial stewardship. In conclusion, this is the first description of an outbreak caused mainly by A. baumannii of ST208 in China. Infection control measures should be strengthened when infection outbreaks in hospital.

  1. The First Outbreak Caused by Acinetobacter baumannii ST208 and ST195 in China

    Qu, Junyan; Du, Yu

    2016-01-01

    This study aimed to analyze the clinical characteristics of patients and molecular mechanisms of the first outbreak mainly caused by sequence types (STs) 208 multidrug resistant (MDR) Acinetobacter baumannii in China. A total of 10 clinical samples were collected from 5 patients who were involved in the outbreak. Bacterial identification and antibiotic sensitivity tests were performed by the VITEK-2 COMPACT automated system. MICs of tigecycline for clinical isolates were determined using broth microdilution. The clonal relatedness of A. baumannii clinical isolates in our local settings was determinated by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). A total of 7 A. baumannii strains were isolated and all were MDR strains; two of them were carbapenem-nonsusceptible strains. blaOXA-23 was the only acquired carbapenemase gene in the isolates. The isolates belonged to a single clonal pulsotype determined by PFGE and two sequences types (STs) determined by MLST. The isolates belonged to the globally disseminated clonal complex 92, among which ST195 and ST208 were the most common sequence types (71.43% and 28.57%). The outbreak was successfully controlled by stringent infection control measures, especially improving the hand hygiene compliance and enhancing antimicrobial stewardship. In conclusion, this is the first description of an outbreak caused mainly by A. baumannii of ST208 in China. Infection control measures should be strengthened when infection outbreaks in hospital. PMID:27144176

  2. Symmetry energy at subsaturation densities and the neutron skin thickness of 208Pb

    Fan, XiaoHua; Dong, JianMin; Zuo, Wei

    2015-06-01

    The mass-dependent symmetry energy coefficients a sym(A) has been extracted by analysing the heavy nuclear mass differences reducing the uncertainties as far as possible in our previous work. Taking advantage of the obtained symmetry energy coefficient a sym(A) and the density profiles obtained by switching off the Coulomb interaction in 208Pb, we calculated the slope parameter L 0.11 of the symmetry energy at the density of 0.11 fm-3. The calculated L 0.11 ranges from 40.5 MeV to 60.3 MeV. The slope parameter L 0.11 of the symmetry energy at the density of 0.11 fm-3 is also calculated directly with Skyrme interactions for nuclear matter and is found to have a fine linear relation with the neutron skin thickness of 208Pb, which is the difference of the neutron and proton rms radii of the nucleus. With the linear relation the neutron skin thickness Δ R np of 208Pb is predicted to be 0.15-0.21 fm.

  3. Symmetry energy at subsaturation densities and the neutron skin thickness of 208Pb

    Fan, Xiaohua; Zuo, Wei

    2015-01-01

    The mass-dependent symmetry energy coefficients $a_{sym}(A)$ has been extracted by analysing the heavy nuclear mass differences reducing the uncertainties as far as possible in our previous work. Taking advantage of the obtained symmetry energy coefficient $a_{sym}(A)$ and the density profiles obtained by switching off the Coulomb interaction in $^{208}\\text{Pb}$, we calculated the slope parameter $L_{0.11}$ of the symmetry energy at the density of $0.11\\text{fm}^{-3}$. The calculated $L_{0.11}$ ranges from 40.5 MeV to 60.3 MeV. The slope parameter $L_{0.11}$ of the symmetry energy at the density of $0.11\\text{fm}^{-3}$ is also calculated directly with Skyrme interactions for nuclear matter and is found to have a fine linear relation with the neutron skin thickness of $^{208}\\text{Pb}$, which is the difference of the neutron and proton rms radii of the nucleus. With the linear relation the neutron skin thickness $ \\Delta R_{np} $ of $^{208}\\text{Pb}$ is predicted to be 0.15 - 0.21 fm.

  4. Evaluation of SD-208, a TGF-β-RI Kinase Inhibitor, as an Anticancer Agent in Retinoblastoma.

    Fadakar, Puran; Akbari, Abolfazl; Ghassemi, Fariba; Mobini, Gholam Reza; Mohebi, Masoumeh; Bolhassani, Manzar; Abed Khojasteh, Hoda; Heidari, Mansour

    2016-06-01

    Retinoblastoma is the most common intraocular tumor in children resulting from genetic alterations and transformation of mature retinal cells. The objective of this study was to investigate the effects of SD-208, TGF-β-RI kinase inhibitor, on the expression of some miRNAs including a miR-17/92 cluster in retinoblastoma cells. Prior to initiate this work, the cell proliferation was studied by Methyl Thiazolyl Tetrazolium (MTT) and bromo-2'-deoxyuridine (BrdU) assays. Then, the expression patterns of four miRNAs (18a, 20a, 22, and 34a) were investigated in the treated SD-208 (0.0, 1, 2 and 3 µM) and untreated Y-79 cells. A remarkable inhibition of the cell proliferation was found in Y-79 cells treated with SD-208 versus untreated cells. Also, the expression changes were observed in miRNAs 18a, 20a, 22 and 34a in response to SD-208 treatment (Pretinoblastoma cell line. To the best of the researchers' knowledge, this is the first report demonstrating that the SD-208 could alter the expression of tumor suppressive miRNAs as well as oncomiRs in vitro. In conclusion, the present data suggest that SD-208 could be an alternative agent in retinoblastoma treatment. PMID:27306340

  5. Analysis of 208 Cases of Hand Foot and Mouth Disease%208例手足口病临床分析

    肖敏

    2014-01-01

    目的分析我院手足口病的临床特点、治疗方法及预防措施。方法采集我院2008年5月~2011年12月住院的手足口病患儿208例进行临床分析。结果手足口病多发于<3岁儿童,多发生于5~7月份,临床以手、足、口、臀等部位皮肤、粘膜的斑丘疹或疱疹为主要特征。所有病例均治愈出院。结论手足口病大多临床表现症状轻,预后良好。少数患儿病情进展快,出现重症病例。早发现、早诊断、早隔离、早治疗是防治手足口病的关键。%Objective Clinical characteristics, treatment and prevention of hand foot and mouth disease. Methods Col ected from May to 2011 December in our hospital in 2008 HFMD patients clinical analysis of 208 cases. Results Foot and mouth disease often occurred in children under 3 years old, occurs in 5 to July, clinical by the hand, foot, mouth, but ocks and other parts of skin, mucous membrane spot papula or herpes as the main feature. Al patients were cured and discharged. Conclusion Hand foot and mouth disease are symptoms of light, the prognosis is good. A few children with the disease progress quickly, severe cases. Early discovery, early diagnosis, early isolation, early treatment is the key to prevention of hand foot and mouth disease.

  6. Escape and spreading properties of charge-exchange resonances in 208Bi

    The properties of charge-exchange excitations of 208Pb with ΔL = 0, i.e., the isobaric analog and Gamow-Teller resonances, are studied within a self-consistent model making use of an effective force of the Skyrme type. The well-known isobaric analog case is used to assess the reliability of the model. The calculated properties of the Gamow-Teller resonance are compared with recent experimental measurements with the aim of better understanding the microscopic structure of this mode. (authors). 30 refs., 5 figs., 6 tabs

  7. Measurement of the Neutron Radius of 208Pb Through Parity-Violation in Electron Scattering

    Abrahamyan, S; Albataineh, H; Aniol, K; Armstrong, D S; Armstrong, W; Averett, T; Babineau, B; Barbieri, A; Bellini, V; Beminiwattha, R; Benesch, J; Benmokhtar, F; Bielarski, T; Boeglin, W; Camsonne, A; Canan, M; Carter, P; Cates, G D; Chen, C; Chen, J -P; Hen, O; Cusanno, F; Dalton, M M; De Leo, R; de Jager, K; Deconinck, W; Decowski, P; Deng, X; Deur, A; Dutta, D; Etile, A; Flay, D; Franklin, G B; Friend, M; Frullani, S; Fuchey, E; Garibaldi, F; Gasser, E; Gilman, R; Giusa, A; Glamazdin, A; Gomez, J; Grames, J; Gu, C; Hansen, O; Hansknecht, J; Higinbotham, D W; Holmes, R S; Holmstrom, T; Horowitz, C J; Hoskins, J; Huang, J; Hyde, C E; Itard, F; Jen, C -M; Jensen, E; Jin, G; Johnston, S; Kelleher, A; Kliakhandler, K; King, P M; Kowalski, S; Kumar, K S; Leacock, J; Leckey, J; Lee, J H; LeRose, J J; Lindgren, R; Liyanage, N; Lubinsky, N; Mammei, J; Mammoliti, F; Margaziotis, D J; Markowitz, P; McCreary, A; McNulty, D; Mercado, L; Meziani, Z -E; Michaels, R W; Mihovilovic, M; Muangma, N; Muñoz-Camacho, C; Nanda, S; Nelyubin, V; Nuruzzaman, N; Oh, Y; Palmer, A; Parno, D; Paschke, K D; Phillips, S K; Poelker, B; Pomatsalyuk, R; Posik, M; Puckett, A J R; Quinn, B; Rakhman, A; Reimer, P E; Riordan, S; Rogan, P; Ron, G; Russo, G; Saenboonruang, K; Saha, A; Sawatzky, B; Shahinyan, A; Silwal, R; Sirca, S; Slifer, K; Solvignon, P; Souder, P A; Sperduto, M L; Subedi, R; Suleiman, R; Sulkosky, V; Sutera, C M; Tobias, W A; Troth, W; Urciuoli, G M; Waidyawansa, B; Wang, D; Wexler, J; Wilson, R; Wojtsekhowski, B; Yan, X; Yao, H; Ye, Y; Ye, Z; Yim, V; Zana, L; Zhan, X; Zhang, J; Zhang, Y; Zheng, X; Zhu, P

    2012-01-01

    We report the first measurement of the parity-violating asymmetry A_PV in the elastic scattering of polarized electrons from 208Pb. A_PV is sensitive to the radius of the neutron distribution (Rn). The result A_PV = 0.656 \\pm 0.060 (stat) \\pm 0.013 (syst) corresponds to a difference between the radii of the neutron and proton distributions Rn - Rp = 0.33 +0.16 -0.18 fm and provides the first electroweak observation of the neutron skin which is expected in a heavy, neutron-rich nucleus.

  8. Elastic ion scattering of 40Ca and 48Ca by 208Pb nuclei

    The elastic ion scattering of 40Ca and 40Ar at 302 MeV and of 48Ca and 48Ti at 252 MeV by 208Pb nuclei has been investigated. The data obtained have been analyzed in terms of the classical model for elastic scattering. The distances of closest approach for classical Rutherford trajectories have been measured for 40Ca and 48Ca to differ by 0.19 fm, which corresponds to the normal radius growth defined by the function R approximately r0Asup(1/3)

  9. Neutron density distributions from antiprotonic 208Pb and 209Bi atoms

    Klos, B.; Trzcinska, A.; Jastrzebski, J.; Czosnyka, T.; Kisielinski, M.; Lubinski, P.; Napiorkowski, P.; Pienkowski, L.; Hartmann, F. J.; Ketzer, B.; Ring, P.; Schmidt, R.; von Egidy, T.; Smolanczuk, R.; S. Wycech

    2007-01-01

    The X-ray cascade from antiprotonic atoms was studied for 208Pb and 209Bi. Widths and shifts of the levels due to the strong interaction were determined. Using modern antiproton-nucleus optical potentials the neutron densities in the nuclear periphery were deduced. Assuming two parameter Fermi distributions (2pF) describing the proton and neutron densities the neutron rms radii were deduced for both nuclei. The difference of neutron and proton rms radii /\\r_np equal to 0.16 +-(0.02)_{stat} +-...

  10. On dipole polarization of deuteron for the scattering by 208 Pb

    The dipole polarization of deuteron by Coulomb field is studied by means of the algebraic version of the resonating group method. The simple asymptotic equations are obtained for the Fourier coefficients of the oscillator basis expansion. These equations describe the dynamics of the behaviour of the polarization deuteron far from the Coulomb center. As a specific application, the scattering of deuteron by Coulomb potential of 208 Pb is considered. The wave functions are built for different energies. The energy dependence of the elastic scattering phase-shift and of the inelasticity factor is found. The differential cross sections for different angles are compared with experimental data

  11. Effect of nuclear matter incompressibility on the +Pb208O16 system

    Ghodsi, O. N.; Torabi, F.

    2016-06-01

    To analyze the property of nuclear matter in the +Pb208O16 collision system, the internuclear potential of the fusion reaction is calculated by using the Skyrme forces associated with an extensive nuclear matter incompressibility K range in the semiclassical energy-density formalism. Comparison of the experimental fusion cross sections and those obtained by using potentials derived from different forces with various K values shows that the incompressibility of nuclear matter changes during the fusion process at different bombarding energies. The results indicate that, as the energy increases, the nuclear matter becomes more incompressible.

  12. Elastic scattering of 9Li on 208Pb at energies around the Coulomb barrier

    We have studied the dynamical effects of the halo structure of 11Li on the scattering on heavy targets at energies around the Coulomb barrier. This experiment was performed at ISAC-II at TRIUMF with a world record in production of the post-accelerated 11Li beam. As part of this study we report here on the first measurement of the elastic cross section of the core nucleus, i.e. 9Li on 208Pb, at energies around the Coulomb barrier. A preliminary optical model analysis has been performed in order to extract a global optical potential to describe the measured angular distributions.

  13. Surface Diffuseness Anomaly in 16O+208pb Quasi-elastic Scattering at Backward Angle

    JIA Hui-Ming; XU Xin-Xing; BAI Chun-Lin; YU Ning; LIN Cheng-Jian; ZHANG Huan-Qiao; LIU Zu-Hua; YANG Feng; JIA Fei; ZHANG Chun-Lei; AN Guang-Peng; WU Zhen-Dong

    2008-01-01

    @@ The quasi-elastic scattering excitation function of the doubly magic 16O+208pb system at a backward angle is measured at sub-barrier energies with high precision. The diffuseness parameters extracted from both the single-channel and the coupled-channels calculations give almost the same value α = 0.76±0.04 fm. The results show that the coupling effect is negligible for the spherical system. The obtained value is smaller than the extracted value from the fusion excitation function, but larger than the value of α = 0.63 fm, which is from the systematic analysis of elastic scattering data.

  14. Recovery of lead-208 radiogenic of residues of thorium with rare earth

    In the middle of the years 1970 in IPEN, considerable work for the purification and conversion of uranium and thorium project, the production of thorium nitrate, a pilot scale from different compounds of Thorium was accomplished; This installation of thorium nitrate produced for national marketing, given the industry of incandescent lighting gas mangles.. The method used by this installation was the purification by solvent extraction with pulsed columns. The thorium was in the organic phase, which was reversed as of thorium nitrate with a high degree of purity. The aqueous phase of this chemical process, containing impurities, some not extracted thorium and virtually all rare earths was precipitated in the form of a hydroxide. This was called RETOTER hydroxide (residue of Thorium and Rare Earth). This residue containing thorium, rare earth and some impurities such as lead-208 product of the decay of thorium-232 were stored in the shed of safeguarding IPEN for further recovery of thorium and rare earth. In this work was studied the recovery of lead-208, nuclear material of interest, separating it by the technique of cementation , where it adds zinc metallic to an acid solution of RETOTER, holding up the lead on the surface of the metallic zinc. (author)

  15. Giant Quadrupole Resonances in 208Pb, the nuclear symmetry energy and the neutron skin thickness

    Roca-Maza, X; Agrawal, B K; Bortignon, P F; Colò, G; Cao, Li-Gang; Paar, N; Vretenar, D

    2012-01-01

    Recent improvements in the experimental determination of properties of the Isovector Giant Quadrupole Resonance (IVGQR), as demonstrated in the A=208 mass region, may be instrumental for characterizing the isovector channel of the effective nuclear interaction. We analyze properties of the IVGQR in 208Pb, using both macroscopic and microscopic approaches. The microscopic method is based on families of non-relativistic and covariant Energy Density Functionals (EDF), characterized by a systematic variation of isoscalar and isovector properties of the corresponding nuclear matter equations of state. The macroscopic approach yields an explicit dependence of the nuclear symmetry energy at some subsaturation density, for instance S(\\rho=0.1 fm^{-3}), or the neutron skin thickness \\Delta r_{np} of a heavy nucleus, on the excitation energies of isoscalar and isovector GQRs. Using available data it is found that S(\\rho=0.1 fm{}^{-3})=23.3 +/- 0.6 MeV. Results obtained with the microscopic framework confirm the correla...

  16. The role of doubly magic 208Pb and its neighbour nuclei in cluster radioactivity

    Using the Coulomb and proximity potential model (CPPM) we have investigated the cluster decays of the isotopes 212-240Pa, 219-245Np, 228-246Pu, 230-249Am and 232-252Cm leading to doubly magic 208Pb and its neighboring nuclei, which are not experimentally detected but which may be detectable in the future. It is found that most of the decays are favourable for experimental measurements (i.e., T1/230 s) and this observation will serve as a guide to future experiments. Our study reveals the role of doubly magic 208Pb daughter nuclei and near doubly magic nuclei in the cluster decay process. In order to make a comparison with CPPM we also calculated the logarithmic half-lives using the Universal formula for the cluster decay (UNIV) by Poenaru et al., the Universal Decay Law (UDL) and the Scaling Law of Horoi et al., and they are found to be in good agreement. The Geiger-Nuttall plots of log10(T1/2) versus Q-1/2 for various clusters from different isotopes of heavy parent nuclei have been studied and are found to be linear. (orig.)

  17. Neutron total cross sections of 204Pb, 206Pb, 207Pb and 208Pb and the neutron electric polarizability

    The neutron total cross sections have been measured for lead isotopes 208Pb, 206Pb and 207Pb in the range from 1 eV to 20 keV and for 204Pb in the range from 1 eV to 100 eV using the time-of-flight facility GNEIS in Gatchina. An accuracy of the measured neutron total cross section (Δσ/σ) is about 10-3 for 208Pb, 10-2 for 206Pb and 207Pb, 5·10-2 for 204Pb. An estimated value of the neutron electric polarizability from analysis of total cross section of 208Pb is αn=(2.4 ± 1.1)·10-3fm3. (author)

  18. Elastic and inelastic scattering of 86Kr on 208Pb at Elab = 43 MeV/nucleon

    Elastic and inelastic angular distributions of 43 MeV/nucleon 86Kr on 208Pb have been measured. Coulomb excitation of the low-lying collective states has a much smaller effect on the elastic angular distribution than observed at low bombarding energy. The inelastic angular distributions to the first 2+ states in 86Kr and 208Pb are well reproduced by coupled-channel calculations using adopted B(E2) values. Above E*=7 MeV the inelastic spectra are dominated by Coulomb excitation of the isovector giant dipole and isoscalar giant quadrupole resonances. (orig.)

  19. Neutron-skin thickness of 208Pb from the energy of the anti-analog giant dipole resonance

    Krasznahorkay, A; Vretenar, D; Harakeh, M N

    2013-01-01

    The energy of the charge-exchange Anti-analog Giant Dipole Resonance (AGDR) has been calculated for the 208Pb isotope using the state-of-the-art fully self-consistent relativistic proton-neutron quasiparticle random-phase approximation based on the Relativistic Hartree-Bogoliubov model. It is shown that the AGDR centroid energy is very sensitively related to the corresponding neutron-skin thickness. The neutron-skin thickness of 208Pb has been determined very precisely by comparing the theoretical results with the available experimental data on E(AGDR). The result DR(pn)= 0.161(42) agrees nicely with the previous experimental results.

  20. Search for mixed-symmetry states of nuclei in the vicinity of the double-magic nucleus 208Pb

    Kocheva D.

    2016-01-01

    Full Text Available In this work we present the results from two experiments dedicated to search for quadrupolecollective isovector valence-shell excitation, the states with so-called mixed proton-neutron symmetry (MSS, in nuclei around the doubly magic nucleus 208Pb. 212Po was studied in an α-transfer reaction. 204Hg was studied in an inverse kinematics Coulomb excitation reaction on a carbon target. Both experiments provide indications for existence of one-phonon MSSs. Those are the first experimentally identified MSSs in the mass A ≈ 208 region.

  1. Alpha-decay properties of /sup 205-208/Fr: Identification of 206Fr/sup m/

    Alpha-particle and γ-ray spectral measurements were made for /sup 205-208/Fr. A new a emitter (T/sub 1/2/ = 0.7 +- 0.1 sec and E/sub a/ = 6.930 +- 0.005 MeV) was observed and identified with the decay of a previously unknown isomer in 206Fr. From the a particle and g ray intensities, a decay branching ratios were deduced for /sup 205-208/Fr utilizing available information concerning the nuclides' (electron capture+positron) decay properties. Reduced widths were calculated and compared with those of neighboring nuclei

  2. 40 CFR 600.208-08 - Calculation of FTP-based and HFET-based fuel economy values for a model type.

    2010-07-01

    ...-based fuel economy values for a model type. 600.208-08 Section 600.208-08 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) ENERGY POLICY FUEL ECONOMY AND CARBON-RELATED EXHAUST EMISSIONS OF MOTOR VEHICLES Fuel Economy Regulations for 1977 and Later Model Year Automobiles-Procedures...

  3. 40 CFR 600.208-12 - Calculation of FTP-based and HFET-based fuel economy and carbon-related exhaust emission values...

    2010-07-01

    ...-based fuel economy and carbon-related exhaust emission values for a model type. 600.208-12 Section 600.208-12 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) ENERGY POLICY FUEL ECONOMY AND CARBON-RELATED EXHAUST EMISSIONS OF MOTOR VEHICLES Fuel Economy Regulations for 1977 and...

  4. Monopole giant resonance in $^{100-132}$Sn, $^{144}$Sm and $^{208}$Pb

    Kvasil, J; Repko, A; Reinhard, P -G; Nesterenko, V O; Kleinig, W

    2014-01-01

    The isoscalar giant monopole resonance (GMR) in spherical nuclei $^{100-132}$Sn, $^{144}$Sm, and $^{208}$Pb is investigated within the Skyrme random-phase-approximation (RPA) for a variety of Skyrme forces and different pairing options. The calculated GMR strength functions are directly compared to the available experimental distributions. It is shown that, in accordance to results of other groups, description of GMR in Sn and heavier Sm/Pb nuclei needs different values of the nuclear incompressibilty, $K \\approx$ 200 or 230 MeV, respectively. Thus none from the used Skyrme forces is able to describe GMR in these nuclei simultaneously. The GMR peak energy in open-shell $^{120}$Sn is found to depend on the isoscalar effective mass, which might be partly used for a solution of the above problem. Some important aspects of the problem (discrepancies of available experimental data, proper treatment of the volume and surface compression in finite nuclei, etc) are briefly discussed.

  5. Semi-microscopic interpretation of fast neutron scattering from 208Pb

    Angular distributions for elastic and inelastic neutron scattering on 208Pb have been measured for the ground state and for excited states at 2.164 MeV (3-), 3.198 MeV (5-), 4.076 MeV (2+) and 4.323 MeV (4+) + 4.425 MeV (6+), at incident energis between 7.5 and 15.5 MeV. Semi-microscopic folding-model calculations of the cross sections have been performed with the microscopic optical model of Jeukenne, Lejeune and Mahaux together with a Hartree-Fock-Bogoluybov ground state nucleon density and RPA transition densities. The nucleon excitation strengths deduced in this study will be compared to values obtained at higher energies and with other projectiles

  6. Search for resonant nu production at $\\sqrt{s}$ = 183 to 208 GeV

    Abdallah, J; Adam, W; Adzic, P; Albrecht, T; Alderweireld, T; Alemany-Fernandez, R; Allmendinger, T; Allport, P P; Amaldi, Ugo; Amapane, N; Amato, S; Anashkin, E; Andreazza, A; Andringa, S; Anjos, N; Antilogus, P; Apel, W D; Arnoud, Y; Ask, S; Åsman, B; Augustin, J E; Augustinus, A; Baillon, Paul; Ballestrero, A; Bambade, P; Barbier, R; Bardin, Dimitri Yuri; Barker, G; Baroncelli, A; Battaglia, Marco; Baubillier, M; Becks, K H; Begalli, M; Behrmann, A; Ben-Haim, E; Benekos, N C; Benvenuti, Alberto C; Bérat, C; Berggren, M; Berntzon, L; Bertrand, D; Besançon, M; Besson, N; Bloch, D; Blom, M; Bluj, M; Bonesini, M; Boonekamp, M; Booth, P S L; Borisov, G; Botner, O; Bouquet, B; Bowcock, T J V; Boyko, I; Bracko, M; Brenner, R; Brodet, E; Brückman, P; Brunet, J M; Bugge, L; Buschmann, P; Calvi, M; Camporesi, T; Canale, V; Carena, F; Castro, N; Cavallo, F R; Chapkin, M M; Charpentier, P; Checchia, P; Chierici, R; Chliapnikov, P V; Chudoba, J; Chung, S U; Cieslik, K; Collins, P; Contri, R; Cosme, G; Cossutti, G; Costa, M J; Crawley, B; Crennell, D J; Cuevas-Maestro, J; D'Hondt, J; Da Silva, W; Dalmau, J; De Maria, N; De Angelis, A; de Boer, Wim; De Clercq, C; De Lotto, B; De Min, A; Della Ricca, G; Di Ciaccio, Lucia; Di Simone, A; Doroba, K; Drees, J; Dris, M; Eigen, G; Ekelöf, T J C; Ellert, M; Elsing, M; Espirito-Santo, M C; Fanourakis, G K; Fassouliotis, D; Feindt, M; Fernández, J; Ferrer, A; Ferro, F; Flagmeyer, U; Föth, H; Fokitis, E; Fulda-Quenzer, F; Fuster, J A; Gandelman, M; García, C; Gavillet, P; Gazis, E N; Geralis, T; Gokieli, R; Golob, B; Gómez-Ceballos, G; Gonçalves, P; Graziani, E; Grosdidier, G; Grzelak, K; Guy, J; Haag, C; Hallgren, A; Hamacher, K; Hamilton, K; Hansen, J; Haug, S; Hauler, F; Hedberg, V; Hennecke, M; Herr, H; Hoffman, J; Holmgren, S O; Holt, P J; Houlden, M A; Hultqvist, K; Jackson, J N; Jarlskog, G; Jarry, P; Jeans, D; Johansson, P D; Johansson, E K; Jonsson, P; Joram, C; Jungermann, L; Kapusta, F; Katsanevas, S; Katsoufis, E C; Kernel, G; Kersevan, Borut P; Kiiskinen, A P; King, B T; Kjaer, N J; Kluit, P; Kokkinias, P; Kourkoumelis, C; Kuznetsov, O; Krumshtein, Z; Kucharczyk, M; Lamsa, J; Leder, G; Ledroit, F; Leinonen, L; Leitner, R; Lemonne, J; Lepeltier, V; Lesiak, T; Liebig, W; Liko, D; Lipniacka, A; Lopes, J H; López, J M; Loukas, D; Lutz, P; Lyons, L; MacNaughton, J; Malek, A; Maltezos, S; Mandl, F; Marco, J; Marco, R; Maréchal, B; Margoni, M; Marin, J C; Mariotti, C; Markou, A; Martínez-Rivero, C; Masik, J; Mastroyiannopoulos, N; Matorras, F; Matteuzzi, C; Mazzucato, M; Mazzucato, F; McNulty, R; Meroni, C; Meyer, W T; Migliore, E; Mitaroff, W A; Mjörnmark, U; Moa, T; Moch, M; Mönig, K; Monge, R; Montenegro, J; Moraes, D; Moreno, S; Morettini, P; Müller, U; Münich, K; Mulders, M; Mundim, L M; Murray, W; Muryn, B; Myatt, Gerald; Myklebust, T; Nassiakou, M; Navarria, Francesco Luigi; Nawrocki, K; Nicolaidou, R; Nikolenko, M; Oblakowska-Mucha, A; Obraztsov, V F; Olshevskii, A G; Onofre, A; Orava, Risto; Österberg, K; Ouraou, A; Oyanguren, A; Paganoni, M; Paiano, S; Palacios, J P; Palka, H; Papadopoulou, T D; Pape, L; Parkes, C; Parodi, F; Parzefall, U; Passeri, A; Passon, O; Peralta, L; Perepelitsa, V F; Perrotta, A; Petrolini, A; Piedra, J; Pieri, L; Pierre, F; Pimenta, M; Piotto, E; Podobnik, T; Poireau, V; Pol, M E; Polok, G; Poropat, P; Pozdnyakov, V; Prorok, Dariusz; Pukhaeva, N; Pullia, Antonio; Rames, J; Ramler, L; Read, A; Rebecchi, P; Rehn, J; Reid, D; Reinhardt, R; Renton, R N; Richard, F; Rídky, J; Rivero, M; Rodríguez, D; Romero, A; Ronchese, P; Rosenberg, E I; Roudeau, Patrick; Rovelli, T; Ruhlmann-Kleider, V; Ryabtchikov, D; Sadovskii, A; Salmi, L; Salt, J; Savoy-Navarro, A; Schwickerath, U; Segar, A; Sekulin, R L; Siebel, M; Sissakian, A N; Smadja, G; Smirnova, O G; Sokolov, A; Sopczak, A; Sosnowski, R; Spassoff, Tz; Stanitzki, M; Stocchi, A; Strauss, J; Stugu, B; Szczekowski, M; Szeptycka, M; Szumlak, T; Tabarelli de Fatis, T; Taffard, A C; Tegenfeldt, F; Timmermans, J; Tkatchev, L G; Tobin, M; Todorovova, S; Tomaradze, A G; Tomé, B; Tonazzo, A; Tortosa, P; Travnicek, P; Treille, D; Tristram, G; Trochimczuk, M; Troncon, C; Turluer, M L; Tyapkin, I A; Tyapkin, P; Tzamarias, S; Uvarov, V; Valenti, G; van Dam, P; Van Eldik, J; Van Lysebetten, A; Van Vulpen, I B; Vegni, G; Veloso, F; Venus, W A; Verbeure, F; Verdier, P; Verzi, V; Vilanova, D; Vitale, L; Vrba, V; Wahlen, H; Washbrook, A J; Weiser, C; Wicke, D; Wickens, J H; Wilkinson, G; Winter, M; Witek, M; Yushchenko, O P; Zalewska-Bak, A; Zalewski, Piotr; Zavrtanik, D; Zimin, N I; Zinchenko, A I; Zupan, M

    2003-01-01

    Searches for resonant nu production in e/sup +/e/sup -/ collisions under the assumption that R-parity is not conserved and that the dominant R-parity violating coupling is lambda /sub 121/or lambda /sub 131/ used data recorded by DELPHI in 1997 to 2000 at centre-of- mass energies of 183 to 208 GeV. No deviation from the standard model was observed. Upper limits are given for the lambda /sub lambda 121/ and lambda /sub 131/ couplings as a function of the sneutrino mass and total width. The limits are especially stringent for sneutrino masses equal to the centre-of-mass energies with the highest integrated luminosities recorded.

  7. Experimental determination of charge density of 208Pb, by electron scattering at high momentum transfer

    After having recalled that elastic electron scattering allows the determination of nucleus charge density with a high precision, and that a sufficiently high momentum transfer is required for the precision of analysis methods, this research thesis presents the results obtained by an experiment performed on 208Pb with a high momentum transfer. This nucleus meets at best the approximations required by theoretical calculations. In a first part, the author discusses the use of this nucleus, discusses the available data and outlines the lacking ones. He presents the experimental installation and aspects: the linear accelerator, the scattering angle, the solid angle, the number of incident neutrons, the target thermal toughness, and the number of elastically scattered neutrons. He reports the reduction of data: experiment-based corrections, radiative corrections, spectrum deconvolution methods, data normalisation, diaphragm aperture corrections and multiple scattering corrections. The next part proposes an analysis of data, and the last one compares the obtained results with theoretical ones

  8. The investigation of inhalational allergen in 208 asthmatic infants and children

    The aim of the study was to investigate the inhalational allergen in 208 asthmatic infants and children with allergen steep puncturing skin. The positive cases were 169(81.25%). There were 18 inhalational allergens in allergen steep. The positive rate of the dust acarus was 78.85%, and the dust was 35.58%, the smoke was 32.69% among the allergens. There was not any positive reaction in other allergens. There were no sexual differences in the positive rate. There was nothing with hypersusceptibility of the individual and the family. The positive rate of the infant was less than the child. There was significant difference of the positive rate in the age group (P < 0.01). The result indicated that dust acarus, air pollution or passive smoke was the quite dangerous factor in the many factors of the asthma. It was very important to strengthen the study of the infant and child prevention and cure

  9. LANDSAT supports data needs for EPA 208 planning. [water quality control and waste treatment management

    1979-01-01

    Excerpts from federal legislation and regulations mandating areawide waster treatment management as a means of restoring and maintaining the integrity of the nation's water are presented along with requirements for grants to the states for water quality planning, management, and implementation. Experiences using LANDSAT to identify nonpoint sources of water pollution as well as land/use/land cover features in South Dakota, Kentucky, Georgia, New Jersey, and Texas are described. Present activities suggest that this type of remote sensing is an efficient, effective tool for areawide water quality planning. Interaction with cognizant federal, state, and local government personnel involved in EPA section 208 planning activities can guide the development of new capabilities and enhance their utility and prospect for use.

  10. Modifications of the tensor and spin-orbit interactions and the stretched states in 208Pb

    We have reanalyzed the (e,e') and (p,p') data at 318 MeV on the stretched, 121,2- and 14-, states of 208Pb using the ideas of G. Brown and co-workers on the reduction of meson and nucleon masses in the nuclear medium. The reaction calculations are compared with new, large basis random-phase-approximation calculations using a residual interaction, also modified, in a consistent way. The resulting interaction, based on the one boson exchange (π+ρ) model, has reduced tensor and enhanced spin-orbit strengths. Agreement between electron and proton quenching factors is found for effective masses, m*/m congruent 0.79--0.86. The reduction or enhancement factors for the modified interaction are in qualitative agreement with those found in other analyses

  11. Single-pass high-harmonic generation at 20.8 MHz repetition rate.

    Vernaleken, Andreas; Weitenberg, Johannes; Sartorius, Thomas; Russbueldt, Peter; Schneider, Waldemar; Stebbings, Sarah L; Kling, Matthias F; Hommelhoff, Peter; Hoffmann, Hans-Dieter; Poprawe, Reinhart; Krausz, Ferenc; Hänsch, Theodor W; Udem, Thomas

    2011-09-01

    We report on single-pass high-harmonic generation (HHG) with amplified driving laser pulses at a repetition rate of 20.8 MHz. An Yb:YAG Innoslab amplifier system provides 35 fs pulses with 20 W average power at 1030 nm after external pulse compression. Following tight focusing into a xenon gas jet, we observe the generation of high-harmonic radiation of up to the seventeenth order. Our results show that state-of-the-art amplifier systems have become a promising alternative to cavity-assisted HHG for applications that require high repetition rates, such as frequency comb spectroscopy in the extreme UV. PMID:21886233

  12. Two-phonon giant resonances in 136Xe, 208Pb, and 238U

    The excitation of the double-phonon giant dipole resonance was observed in heavy projectile nuclei impinging on targets of high nuclear charge with energies of 500-700 MeV/nucleon. New experimental data are presented for 136Xe and 238U together with further analysis of earlier data on 208Pb. Differential cross sections dσ/dE* and dσ/dθ for electromagnetic excitations were deduced. Depending on the isotope, cross sections appear to be enhanced in comparison to those expected from a purely harmonic nuclear dipole response. The cumulative effect of excitations of two-phonon states composed of one dipole and one quadrupole phonon, of predicted anharmoniticies in the double-phonon dipole response, and of damping of the dipole resonance during the collision may account for the discrepancy. In addition, decay properties of two-phonon resonances were studied and compared to that of a statistical decay. (orig.)

  13. 7 CFR 1710.208 - RUS criteria for approval of all load forecasts by power supply borrowers and by distribution...

    2010-01-01

    ... 7 Agriculture 11 2010-01-01 2010-01-01 false RUS criteria for approval of all load forecasts by... COMMON TO ELECTRIC LOANS AND GUARANTEES Load Forecasts § 1710.208 RUS criteria for approval of all load... analytical techniques and models; (f) The borrower provided RUS with adequate documentation and assistance...

  14. An investigation of the influence of the pairing correlations on the properties of the isobar analog resonances in = 208 nuclei

    A Küçükbursa; D I Salamov; T Babacan; H A Aygör

    2004-11-01

    Within the quasi-particle random phase approximation (QRPA), the method of the self-consistent determination of the isovector effective interaction which restores a broken isotopic symmetry for the nuclear part of the Hamiltonian is given. The effect of the pairing correlations between nucleons on the following quantities were investigated for the = 208 nuclei: energies of the isobar analog 0+ states, the isospin admixtures in the ground state of the even–even nuclei, and the differential cross-section for the 208Pb(3He,)208Bi reaction at E(3He) = 450 MeV. Both couplings of the excitation branches with z = 0 ± 1, and the analog state with isovector monopole resonance (IVMR) in the quasi-particle representation were taken into account in our calculations. As a result of these calculations, it was seen that the pairing correlations between nucleons have no considerable effect on the = 23 isospin admixture in the ground state of the 208Pb nucleus, and they cause partially an increase in the isospin impurity of the isobar analog resonance (IAR). It was also established that these correlations have changed the isospin structure of the IAR states, and shifted the energies of the IVMR states to the higher values.

  15. 8 CFR 208.31 - Reasonable fear of persecution or torture determinations involving aliens ordered removed under...

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false Reasonable fear of persecution or torture... Persecution § 208.31 Reasonable fear of persecution or torture determinations involving aliens ordered removed... persecution or torture. The alien's representative may present a statement at the end of the interview....

  16. 11Li Breakup on 208Pb at Energies Around the Coulomb Barrier

    Fernández-García, J.P.; Cubero, M.; Rodríguez-Gallardo, M.;

    2013-01-01

    The inclusive breakup for the 11Li+208Pb reaction at energies around the Coulomb barrier has been measured for the first time. A sizable yield of 9Li following the 11Li dissociation has been observed, even at energies well below the Coulomb barrier. Using the first-order semiclassical perturbatio...

  17. 22 CFR 208.875 - May I ask the debarring official to reconsider a decision to debar me?

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false May I ask the debarring official to reconsider... DEVELOPMENT GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Debarment § 208.875 May I ask the debarring official to reconsider a decision to debar me? Yes, as a debarred person you may ask the...

  18. 22 CFR 208.525 - Whom do I ask if I have questions about a person in the EPLS?

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Whom do I ask if I have questions about a... GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Excluded Parties List System § 208.525 Whom do I ask if I have questions about a person in the EPLS? If you have questions about a person in the EPLS,...

  19. Large-scale configuration interaction description of the structure of nuclei around $^{100}$Sn and $^{208}$Pb

    Qi, Chong

    2016-01-01

    In this contribution I would like to discuss briefly the recent developments of the nuclear configuration interaction shell model approach. As examples, we apply the model to calculate the structure and decay properties of low-lying states in neutron-deficient nuclei around $^{100}$Sn and $^{208}$Pb that are of great experimental and theoretical interests.

  20. 12 CFR 208.100 - Sale of bank's money orders off premises as establishment of branch office.

    2010-01-01

    ... 12 Banks and Banking 2 2010-01-01 2010-01-01 false Sale of bank's money orders off premises as... SYSTEM (REGULATION H) Interpretations § 208.100 Sale of bank's money orders off premises as establishment... deposits are received, or checks paid, or money lent.” The basic question is whether the sale of a...

  1. 48 CFR 208.602-70 - Acquisition of items for which FPI has a significant market share.

    2010-10-01

    ... SOURCES OF SUPPLIES AND SERVICES Acquisition From Federal Prison Industries, Inc. 208.602-70 Acquisition... 827 of the National Defense Authorization Act for Fiscal Year 2008 (Pub. L. 110-181). (b) Definition....acq.osd.mil/dpap/cpic/cp/specific_policy_areas.html#federal_ prison. (c) Policy. (1) When acquiring...

  2. Density-constrained time-dependent Hartree-Fock calculation of $^{16}$O+$^{208}$Pb fusion cross sections

    Umar, A. S.; Oberacker, V. E.

    2008-01-01

    We present a fully microscopic study of the $^{16}$O+$^{208}$Pb fusion using the density-constrained time-dependent Hartree-Fock theory. The calculated fusion cross-sections are in good agreement with the experimental data for the entire energy range indicating that the incorporation of dynamical effects is crucial in describing heavy-ion fusion.

  3. 31 CFR 538.208 - Prohibited grant or extension of credits or loans to the Government of Sudan.

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Prohibited grant or extension of... TREASURY SUDANESE SANCTIONS REGULATIONS Prohibitions § 538.208 Prohibited grant or extension of credits or loans to the Government of Sudan. Except as otherwise authorized, the grant or extension of credits...

  4. An EP4 antagonist ONO-AE3-208 suppresses cell invasion, migration, and metastasis of prostate cancer.

    Xu, Song; Zhang, Zhengyu; Ogawa, Osamu; Yoshikawa, Takeshi; Sakamoto, Hiromasa; Shibasaki, Noboru; Goto, Takayuki; Wang, Liming; Terada, Naoki

    2014-09-01

    EP4 is one of the prostaglandin E2 receptors, which is the most common prostanoid and is associated with inflammatory disease and cancer. We previously reported that over-expression of EP4 was one of the mechanisms responsible for progression to castration-resistant prostate cancer, and an EP4 antagonist ONO-AE3-208 in vivo suppressed the castration-resistant progression regulating the activation of androgen receptor. The aim of this study was to analyze the association of EP4 with prostate cancer metastasis and the efficacy of ONO-AE3-208 for suppressing the metastasis. The expression levels of EP4 mRNA were evaluated in prostate cancer cell lines, LNCaP, and PC3. EP4 over-expressing LNCaP was established, and their cell invasiveness was compared with the control LNCaP (LNCaP/mock). The in vitro cell proliferation, invasion, and migration of these cells were examined under different concentrations of ONO-AE3-208. An in vivo bone metastatic mouse model was constructed by inoculating luciferase expressing PC3 cells into left ventricle of nude mice. Their bone metastasis was observed by bioluminescent imaging with or without ONO-AE3-208 administration. The EP4 mRNA expression levels were higher in PC3 than in LNCaP, and EP4 over-expression of LNCaP cells enhanced their cell invasiveness. The in vitro cell invasion and migration were suppressed by ONO-AE3-208 in a dose-dependent manner without affecting cell proliferation. The in vivo bone metastasis of PC3 was also suppressed by ONO-AE3-208 treatment. EP4 expression levels were correlated with prostate cancer cell invasiveness and EP4 specific antagonist ONO-AE3-208 suppressed cell invasion, migration, and bone metastasis, indicating that it is a potential novel therapeutic modality for the treatment of metastatic prostate cancer. PMID:24744183

  5. Weak charge form factor and radius of 208Pb through parity violation in electron scattering

    Horowitz, C J; Jen, C -M; Rakhman, A; Souder, P A; Dalton, M M; Liyanage, N; Paschke, K D; Saenboonruang, K; Silwal, R; Franklin, G B; Friend, M; Quinn, B; Kumar, K S; McNulty, D; Mercado, L; Riordan, S; Wexler, J; Michaels, R W; Urciuoli, G M

    2012-01-01

    We use distorted wave electron scattering calculations to extract the weak charge form factor F_W(q), the weak charge radius R_W, and the point neutron radius R_n, of 208Pb from the PREX parity violating asymmetry measurement. The form factor is the Fourier transform of the weak charge density at the average momentum transfer q=0.475 fm$^{-1}$. We find F_W(q) =0.204 \\pm 0.028 (exp) \\pm 0.001 (model). We use the Helm model to infer the weak radius from F_W(q). We find R_W= 5.826 \\pm 0.181 (exp) \\pm 0.027 (model) fm. Here the exp error includes PREX statistical and systematic errors, while the model error describes the uncertainty in R_W from uncertainties in the surface thickness \\sigma of the weak charge density. The weak radius is larger than the charge radius, implying a "weak charge skin" where the surface region is relatively enriched in weak charges compared to (electromagnetic) charges. We extract the point neutron radius R_n=5.751 \\pm 0.175 (exp) \\pm 0.026 (model) \\pm 0.005 (strange) fm$, from R_W. Her...

  6. Isomers in neutron-rich A∼190 nuclides from 208Pb fragmentation

    Relativistic projectile fragmentation of 208Pb has been used to produce isomers in neutron-rich, A∼190 nuclides. A forward-focusing spectrometer provided ion-by-ion mass and charge identification. The detection of γ-rays emitted by stopped ions has led to the assignment of isomers in 188Ta, 190W, 192Re, 193Re, 195Os, 197Ir, 198Ir, 200Pt, 201Pt, 202Pt and 203Au, with half-lives ranging from approximately 10 ns to 1 ms. Tentative isomer information has been found also for 174Er, 175Er, 185Hf, 191Re, 194Re and 199Ir. In most cases, time-correlated, singles γ-ray events provided the first spectroscopic data on excited states for each nuclide. In 200Pt and 201Pt, the assignments are supported by γ-γ coincidences. Isomeric ratios provide additional information, such as half-life and transition energy constraints in particular cases. The level structures of the platinum isotopes are discussed, and comparisons are made with isomer systematics. (orig.)

  7. Isomers in neutron-rich A{approx}190 nuclides from {sup 208}Pb fragmentation

    Caamano, M.; Podolyak, Z.; Garces Narro, J. [University of Surrey, Department of Physics, Guildford (United Kingdom); Walker, M. [University of Surrey, Department of Physics, Guildford (United Kingdom)]|[TRIUMF, Vancouver (Canada); Regan, P.H. [University of Surrey, Department of Physics, Guildford (United Kingdom)]|[Yale University, Wright Nuclear Structure Laboratory, New Haven (United States); Pfuetzner, M. [Warsaw University, Institute of Experimental Physics, Warsaw (Poland); Gerl, J.; Cortina Gil, D.; Doering, J.; Geissel, H. [GSI, Darmstadt (Germany); Hellstroem, M. [GSI, Darmstadt (Germany)]|[Lund University, Div. of Nuclear Physics (Sweden); Mayet, P. [GSI, Darmstadt (Germany)]|[KU Leuven, IKS, Leuven (Belgium); Mineva, M.N. [Lund University, Division of Nuclear Physics (Sweden); Aprahamian, A. [University of Notre Dame, Department of Physics, South Bend (United States); Benlliure, J. [University of Santiago de Compostela, Departamento de Fisica de Particulas, Santiago de Compostela (Spain); Bruce, A.M. [University of Brighton, School of Engineering, Brighton (United Kingdom); Butler, P.A. [University of Liverpool, Oliver Lodge Laboratory, Liverpool (United Kingdom); Cullen, D.M. [University of Liverpool, Oliver Lodge Laboratory, Liverpool (United Kingdom)]|[University of Manchester, Schuster Lab., Manchester (United Kingdom); Enqvist, T. [GSI, Darmstadt (Germany)]|[Univ. of Jyvaeskylae, Dept. of Physics, Jyvaeskylae (Finland); Fox, C. [Univ. of Liverpool, Oliver Lodge Lab., Liverpool (United Kingdom)]|[Duke Univ., TUNL, Durham (United States); Gelletly, M.; Giovinazzo, J.; Gorska, M.; Grawe, H.; Grzywacz, R.; Kleinboehl, A.H.; Korten, A.; Lewitowicz, M.; Lucas, R.; Mach, H.; O' Leary, C.D.; De Oliveira, F.; Pearson, C.J.; Rejmund, F.; Rejmund, M.; Sawicka, M.; Schaffner, H.; Schlegel, C.; Schmidt, K.; Schmidt, K.H.; Stevenson, P.D.; Theisen, C.; Vives, F.; Warner, D.D.; Wheldon, C.; Wollersheim, S.; Wooding, S.; Xu, F.; Yordanov, O.

    2005-02-01

    Relativistic projectile fragmentation of {sup 208}Pb has been used to produce isomers in neutron-rich, A{approx}190 nuclides. A forward-focusing spectrometer provided ion-by-ion mass and charge identification. The detection of {gamma}-rays emitted by stopped ions has led to the assignment of isomers in {sup 188}Ta, {sup 190}W, {sup 192}Re, {sup 193}Re, {sup 195}Os, {sup 197}Ir, {sup 198}Ir, {sup 200}Pt, {sup 201}Pt, {sup 202}Pt and {sup 203}Au, with half-lives ranging from approximately 10 ns to 1 ms. Tentative isomer information has been found also for {sup 174}Er, {sup 175}Er, {sup 185}Hf, {sup 191}Re, {sup 194}Re and {sup 199}Ir. In most cases, time-correlated, singles {gamma}-ray events provided the first spectroscopic data on excited states for each nuclide. In {sup 200}Pt and {sup 201}Pt, the assignments are supported by {gamma}-{gamma} coincidences. Isomeric ratios provide additional information, such as half-life and transition energy constraints in particular cases. The level structures of the platinum isotopes are discussed, and comparisons are made with isomer systematics. (orig.)

  8. Elastic Neutron Scattering at 96 MeV from {sup 12}C and {sup 208}Pb

    Klug, J.; Blomgren, J.; Atac, A. [and others

    2003-04-01

    A facility for detection of scattered neutrons in the energy interval 50-130 MeV, SCANDAL (SCAttered Nucleon Detection AssembLy), has recently been installed at the 20-180 MeV neutron beam line of the The Svedberg Laboratory, Uppsala. Elastic neutron scattering from {sup 12}C and {sup 208}Pb has been studied at 96 MeV in the 10-70 deg interval. The achieved energy resolution, 3.7 MeV, is about an order of magnitude better than for any previous experiment above 65 MeV incident energy. The present experiment represents the highest neutron energy where the ground state has been resolved from the first excited state in neutron scattering. A novel method for normalization of the absolute scale of the cross section has been used. The estimated uncertainty, 3 %, is unprecedented for a neutron-induced differential cross section measurement on a nuclear target. The results are compared with modern optical model predictions, based on phenomenology or microscopic nuclear theory.

  9. Relativistic particles produced in 208Pb induced nuclear collisions at 158 A GeV/c

    The angular structures of relativistic particles produced in 208Pb+Ag(Br) collisions in emulsion detector at 158 A GeV/c have been studied. Three different methods of analysis have been used - scaled factorial moments, wavelets and parameter S2. An evidence for nonstatistical fluctuations has been shown using the method of scaled factorial moments in pseudorapidity phase space. The comparative study has been done for different beam energies and masses and Pb+Em events with different degree of centrality. No clear minimum has been found in the dependences of intermittency parameter λq on q. The continuous wavelet transform has been applied to the pseudorapidity spectra of produced particles. Some irregularities have been revealed mainly in the scale range a ≤ 0.5 which can be interpreted as the preferred pseudorapidities of groups of emitted particles. The nonstatistical ring-like structures of produced particles in azimuthal plane of a collision have been found and their parameters have been determined when the azimuthal structures of produced particles have been investigated using the S2 method

  10. Neutron fluence rate measurements in a PGNAA 208-liter drum assay system using silicon carbide detectors

    Dulloo, A.R. E-mail: dullooar@westinghouse.com; Ruddy, F.H.; Seidel, J.G.; Lee, S.; Petrovic, B.; McIlwain, M.E

    2004-01-01

    Pulsed prompt gamma neutron activation analysis (PGNAA) is being implemented for the nondestructive assay (NDA) of mercury, cadmium and lead in containers of radioactive waste. A PGNAA prototype system capable of assaying 208-liter (55-gallon) drums has already been built and demonstrated. As part of the evaluation of this system, the thermal neutron fluence rate distribution in a drum containing a combustible waste surrogate was measured during PGNAA runs using a silicon carbide neutron detector. The fast charge-collection time of this detector type enabled the investigation of the neutron kinetics at various locations within the matrix during and between pulses of the system's 14-MeV neutron source. As expected, the response of a SiC detector equipped with a lithium-6 fluoride layer is dominated by thermal neutron-induced events between pulses. The measurement results showed that the thermal neutron fluence rate is relatively uniform over a radial depth of several centimeters in the matrix region that contributes a significant fraction of the prompt gamma radiation incident on the system's photon detector.