WorldWideScience

Sample records for actinium 220

  1. ACC 220 Tutorials / acc220dotcom

    OpenAIRE

    modumteja

    2015-01-01

    For more course tutorials visit www.acc220.com   ACC 220 Week 1 Checkpoint Career Opportunities ACC 220 Week 1 DQ 1 & DQ 2 ACC 220 Week 2 Checkpoint Proprietorships, Partnerships, and Corporations ACC 220 Week 2 Assignment Financial Statements ACC 220 Week 3 Checkpoint Classified Balance Sheets ACC 220 Week 3 DQ 1 and DQ 2 ACC 220 Week 4 Checkpoint Cash Management Matrix Appendix B ACC 220 Week 4 Assignment Internal Cash Control ACC 220 Wee...

  2. Spectroscopic and computational investigation of actinium coordination chemistry

    Science.gov (United States)

    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.

    2016-08-01

    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, AcIII 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 AcIII and AmIII in HCl solutions indicate AcIII coordinates more inner-sphere Cl1- ligands (3.2+/-1.1) than AmIII (0.8+/-0.3). These results imply diverse reactivity for the +3 actinides and highlight the unexpected and unique AcIII chemical behaviour.

  3. Separation of Actinium 227 from the uranium minerals

    International Nuclear Information System (INIS)

    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)

  4. Spectroscopic and computational investigation of actinium coordination chemistry

    Science.gov (United States)

    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, AcIII 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 AcIII and AmIII in HCl solutions indicate AcIII coordinates more inner-sphere Cl1– ligands (3.2±1.1) than AmIII (0.8±0.3). These results imply diverse reactivity for the +3 actinides and highlight the unexpected and unique AcIII chemical behaviour. PMID:27531582

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

    CERN Document Server

    Fry, C

    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.

  6. Spectroscopic and computational investigation of actinium coordination chemistry.

    Science.gov (United States)

    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

  7. BIS 220 Tutorials /bis220dotcom

    OpenAIRE

    ramya85

    2015-01-01

    BIS 220 Entire Course   For more course tutorials visit www.bis220.com   BIS 220 Week 1 Individual Assignment Information Technology Acts Paper BIS 220 Week 1 DQ 1 BIS 220 Week 1 DQ 2 BIS 220 Week 2 LT Reflection Summary BIS 220 Week 2 Individual Assignment Information Systems Proposal BIS 220 Week 2 DQ 1 BIS 220 Week 2 DQ 2 BIS 220 Week 3 Individual Assignment Types of Electronic Commerce Activity BIS 220 Week 3 LT Reflection Summ...

  8. BIS 220 Tutorials / bis220dotcom

    OpenAIRE

    rajitha82

    2015-01-01

    BIS 220 Entire Course   For more course tutorials visit www.bis220.com   BIS 220 Week 1 Individual Assignment Information Technology Acts Paper BIS 220 Week 1 DQ 1 BIS 220 Week 1 DQ 2 BIS 220 Week 2 LT Reflection Summary BIS 220 Week 2 Individual Assignment Information Systems Proposal BIS 220 Week 2 DQ 1 BIS 220 Week 2 DQ 2 BIS 220 Week 3 Individual Assignment Types of Electronic Commerce Activity BIS 220 Week 3 LT Reflection Summ...

  9. CJS 220 Tutorials / cjs220dotcom

    OpenAIRE

    sunshine38

    2015-01-01

    For more course tutorials visit www.cjs220.com   CJS 220 Week 1 DQ 1 and DQ 2 CJS 220 Week 2 Checkpoint Structure of the Courts CJS 220 Week 2 Individual Law Opinion Paper CJS 220 Week 3 Checkpoint Due Process CJS 220 Week 3 Checkpoint Legal Defenses CJS 220 Week 3 DQ 1 and DQ 2 CJS 220 Week 4 Checkpoint Attorney Client Confidentiality   CJS 220 Week 4 Individual Assignment Prosecution Versus Defense Paper CJS 220 Week 5 Checkpoint Path to...

  10. HCA 220 Courses/sanptutorial

    OpenAIRE

    nertu

    2015-01-01

    HCA 220 Capstone Discussion Question HCA 220 Assignment: Seven Organizational Approaches HCA 220 Week 1 Discussion Questions HCA 220 Week 3 Discussion Question 1 HCA 220 Week 3 Discussion Question 2 HCA 220 Week 5 Discussion Question 1 HCA 220 Week 5 Discussion Question 2 HCA 220 Week 7 Discussion Question 1 HCA 220 Week 7 Discussion Question 2 HCA 220 CheckPoint: Building a Medical Vocabulary Ch. 1 HCA 220 CheckPoint: Building a Medical Vocabulary Ch. ...

  11. GLG 220 Uop Material-glg220dotcom

    OpenAIRE

    CarterOlivia4

    2015-01-01

    For more course tutorials visit www.glg220.com   GLG 220 Week 1 DQ 1 GLG 220 Week 1 DQ 2 GLG 220 Week 1 Summary Questions GLG 220 Week 1 Mineral Identification Worksheet GLG 220 Week 2 DQ 1 GLG 220 Week 2 DQ 2 GLG 220 Week 2 Plate Tectonics Paper GLG 220 Week 2 Lab Earthquake Report GLG 220 Week 3 DQ 1 GLG 220 Week 3 DQ 2 GLG 220 Week 3 Groundwater Lab Report GLG 220 Week 3 Sculpturing the Earth’s Surface GLG 220 Week 4 Oc...

  12. HCA 220 Course Tutorial / Indigohelp

    OpenAIRE

    john

    2015-01-01

    For more classes visit www.indigohelp.com   HCA 220 Capstone Discussion Question HCA 220 Assignment: Seven Organizational Approaches HCA 220 Week 1 Discussion Questions HCA 220 Week 3 Discussion Question 1 HCA 220 Week 3 Discussion Question 2 HCA 220 Week 5 Discussion Question 1 HCA 220 Week 5 Discussion Question 2 HCA 220 Week 7 Discussion Question 1 HCA 220 Week 7 Discussion Question 2 HCA 220 CheckPoint: Building a Medical Vocabulary Ch....

  13. BIS 220 Uop Material-bis220dotcom

    OpenAIRE

    greenappled

    2015-01-01

    BIS 220 Entire Course For more course tutorials visit www.bis220.com BIS 220 Week 1 Individual Assignment Information Technology Acts Paper BIS 220 Week 1 DQ 1 BIS 220 Week 1 DQ 2 BIS 220 Week 2 LT Reflection Summary BIS 220 Week 2 Individual Assignment Information Systems Proposal BIS 220 Week 2 DQ 1 BIS 220 Week 2 DQ 2 BIS 220 Week 3 Individual Assignment Types of Electronic Commerce Activity BIS 220 Week 3 LT Reflection Summary BIS 220 Week 3...

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

    International Nuclear Information System (INIS)

    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

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

    Energy Technology Data Exchange (ETDEWEB)

    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

  16. HSM220 phoenix Material-hsm220dotcom

    OpenAIRE

    sandy

    2015-01-01

    HSM 220 Entire Course For more course tutorials visit www.hsm220.com   HSM 220 Week 1 CheckPoint Characteristics of a Knowledge and Value-Centered HSM 220 Week 1 Discussion Question 1 and 2 HSM 220 Week 2 CheckPoint Environmental Factors HSM 220 Week 2 Assignment Mission Statement Internet Search HSM 220 Week 3 Discussion Question 1 and 2 HSM 220 Week 3 CheckPoint Management Structures HSM 220 Week 4 Assignment Designing a Reward System HSM 220...

  17. COMP 220 Devry Course Tutorial / comp220dotcom

    OpenAIRE

    gita14

    2015-01-01

    For more course tutorials visit www.comp220.com   COMP 220 iLab 1 Two-Dimensional Arrays Lab Report and Source Code COMP 220 iLab 2 Resistor Lab Report and Source Code COMP 220 iLab 3 Bank Account Lab Report and Source Code COMP 220 iLab 4 Composition Lab Report and Source Code COMP 220 iLab 5 Lab Report and Source Code COMP 220 iLab 6 Overloaded Operators Lab Report and Source Code COMP 220 iLab 7 Polymorphism Lab Report and Source Code  

  18. SPM 220 courses/snaptutorial

    OpenAIRE

    Susan Mallery

    2015-01-01

    For more classes visit www.snaptutorial.com   SPM 220 Week 1 CheckPoint: Moral and Nonmoral Values SPM 220 Week 2 Assignment: Principles and Exceptions SPM 220 Week 2 CheckPoint: Moral Principles SPM 220 Week 3 CheckPoint: Intimidation in Sport SPM 220 Week 4 Assignment: Kids Speak Out SPM 220 Week 4 CheckPoint: Violence in Sport SPM 220 Week 5 CheckPoint: Eligibility and Elimination in Sport SPM 220 Week 6 Assignment: Exploitation in Sport SPM...

  19. 220 林学

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    04020983 220·10林业基础学科中国林业政策对减排温室气体的贡献=The Contribution of China's Forestry Policy to Offset Green House Gas Emission,04020984 220·10沙棘一杨树混交林生物量、林地土壤特性及其根系分布特征研究=Biomass,soil and root system distribution characteristics of Seabuckthorn Poplar mixed forest,……

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

    International Nuclear Information System (INIS)

    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

  1. COMP 220 Devry Course/ uophelp.com

    OpenAIRE

    royal

    2015-01-01

    For more course tutorials visit www.uophelp.com COMP 220 iLab 1 Two-Dimensional Arrays Lab Report and Source Code COMP 220 iLab 2 Resistor Lab Report and Source Code COMP 220 iLab 3 Bank Account Lab Report and Source Code COMP 220 iLab 4 Composition Lab Report and Source Code COMP 220 iLab 5 Lab Report and Source Code COMP 220 iLab 6 Overloaded Operators Lab Report and Source Code COMP 220 iLab 7 Polymorphism Lab Report and Source Code  

  2. COMP 220 (Devry) course tutorial/tutorialoutlet

    OpenAIRE

    naresh 1

    2015-01-01

    For more course tutorials visit www.tutorialoutlet.com   COMP 220 iLab 1 Two-Dimensional Arrays Lab Report and Source Code COMP 220 iLab 2 Resistor Lab Report and Source Code COMP 220 iLab 3 Bank Account Lab Report and Source Code COMP 220 iLab 4 Composition Lab Report and Source Code COMP 220 iLab 5 Lab Report and Source Code COMP 220 iLab 6 Overloaded Operators Lab Report and Source Code COMP 220 iLab 7 Polymorphism Lab Report and Source Code

  3. COMP 220 UOP COURSE Tutorial/UOPHELP

    OpenAIRE

    sgdvdfb

    2015-01-01

    For more course tutorials visit www.uophelp.com COMP 220 iLab 1 Two-Dimensional Arrays Lab Report and Source Code COMP 220 iLab 2 Resistor Lab Report and Source Code COMP 220 iLab 3 Bank Account Lab Report and Source Code COMP 220 iLab 4 Composition Lab Report and Source Code COMP 220 iLab 5 Lab Report and Source Code COMP 220 iLab 6 Overloaded Operators Lab Report and Source Code COMP 220 iLab 7 Polymorphism Lab Report and Source Code

  4. Thorium and actinium polyphosphonate compounds as bone-seeking alpha particle-emitting agents.

    Science.gov (United States)

    Henriksen, Gjermund; Bruland, Oyvind S; Larsen, Roy H

    2004-01-01

    The present study explores the use of alpha-particle-emitting, bone-seeking agents as candidates for targeted radiotherapy. Actinium and thorium 1,4,7,10 tetraazacyclododecane N,N',N'',N''' 1,4,7,10-tetra(methylene) phosphonic acid (DOTMP) and thorium-diethylene triamine N,N',N'' penta(methylene) phosphonic acid (DTMP) were prepared and their biodistribution evaluated in conventional Balb/C mice at four hours after injection. All three bone-seeking agents showed a high uptake in bone and a low uptake in soft tissues. Among the soft tissue organs, only kidney had a relatively high uptake. The femur/kidney ratios for 227Th-DTMP, 228-Ac-DOTMP and 227Th-DOTMP were 14.2, 7.6 and 6.0, respectively. A higher liver uptake of 228Ac-DOTMP was seen than for 227Th-DTMP and 227Th-DOTMP. This suggests that some demetallation of the 228Ac-DOTMP complex had occurred. The results indicate that 225Ac-DOTMP, 227Th-DOTMP and 227Th-DTMP have promising properties as potential therapeutic bone-seeking agents.

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

    Science.gov (United States)

    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. 220Rn in geothermal steam

    International Nuclear Information System (INIS)

    The isotope 220Rn (half-life 56 seconds) occurs in fumaroles in Japan and Taiwan, in amounts as high as 1000 times the 222Rn content. The authors report its presence in geothermal steam at Wairakei, New Zealand, in amounts as high as 130 times those of 222Rn. It is detected by a radiochemical separation of Pb, and gamma spectrometry. Some of the 220Rn/222Rn ratios are higher than theoretically expected, but have frequently been reported from similar locations. Theories of possible origins will be discussed. 22 refs., 1 tab

  7. 20 CFR 220.35 - Introduction.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Introduction. 220.35 Section 220.35 Employees... Disability Determinations Governed by the Regulations of the Social Security Administration § 220.35 Introduction. In addition to its authority to decide whether a claimant is disabled under the...

  8. 46 CFR 129.220 - Basic safety.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Basic safety. 129.220 Section 129.220 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS ELECTRICAL INSTALLATIONS General Requirements § 129.220 Basic safety. (a) Electrical equipment and installations must be...

  9. 21 CFR 189.220 - Flectol H.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 3 2010-04-01 2009-04-01 true Flectol H. 189.220 Section 189.220 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN... Addition to Human Food Through Food-Contact Surfaces § 189.220 Flectol H. (a) Flectol H is the chemical...

  10. 49 CFR 179.220-10 - Welding.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Welding. 179.220-10 Section 179.220-10... Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW and 115AW) § 179.220-10 Welding. (a) All joints... of this subchapter). Welding procedures, welders, and fabricators shall be approved. (b)...

  11. 12 CFR 611.220 - Outside directors.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 6 2010-01-01 2010-01-01 false Outside directors. 611.220 Section 611.220... of Directors § 611.220 Outside directors. (a) Eligibility, number and term. (1) Eligibility. No candidate for an outside director position may be a director, officer, employee, agent, or stockholder of...

  12. 45 CFR 148.220 - Excepted benefits.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Excepted benefits. 148.220 Section 148.220 Public... FOR THE INDIVIDUAL HEALTH INSURANCE MARKET Preemption; Excepted Benefits § 148.220 Excepted benefits... provision of the benefits described in paragraphs (a) and (b) of this section (or any combination of...

  13. 46 CFR 126.220 - Description.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Description. 126.220 Section 126.220 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Certificate of Inspection § 126.220 Description. The Certificate of Inspection issued to an OSV specifies...

  14. SPM 220 uop course tutorial/tutorial rank

    OpenAIRE

    tiplod

    2015-01-01

    SPM 220 Week 1 CheckPoint: Moral and Nonmoral Values SPM 220 Week 2 Assignment: Principles and Exceptions SPM 220 Week 2 CheckPoint: Moral Principles SPM 220 Week 3 CheckPoint: Intimidation in Sport SPM 220 Week 4 Assignment: Kids Speak Out SPM 220 Week 4 CheckPoint: Violence in Sport SPM 220 Week 5 CheckPoint: Eligibility and Elimination in Sport SPM 220 Week 6 Assignment: Exploitation in Sport SPM 220 Week 6 CheckPoint: Commercialized Sport SPM 220 Week 7...

  15. 24 CFR 220.253 - Substitute mortgagors.

    Science.gov (United States)

    2010-04-01

    ... Contract Rights and Obligations-Homes § 220.253 Substitute mortgagors. (a) Selling mortgagor. The mortgagee... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Substitute mortgagors. 220.253... the Commissioner's approval of a substitute mortgagor, as provided by this section. (b)...

  16. 24 CFR 990.220 - Purpose.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 4 2010-04-01 2010-04-01 false Purpose. 990.220 Section 990.220 Housing and Urban Development Regulations Relating to Housing and Urban Development (Continued) OFFICE OF ASSISTANT SECRETARY FOR PUBLIC AND INDIAN HOUSING, DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT THE PUBLIC HOUSING OPERATING FUND...

  17. 40 CFR 86.220-94 - [Reserved

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false 86.220-94 Section 86.220-94 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF... Year Gasoline-Fueled New Light-Duty Vehicles, New Light-Duty Trucks and New Medium-Duty...

  18. 38 CFR 52.220 - Transportation.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Transportation. 52.220... FOR ADULT DAY HEALTH CARE OF VETERANS IN STATE HOMES Standards § 52.220 Transportation. Transportation... management must provide or contract for transportation to enable participants, including persons...

  19. 7 CFR 220.3 - Administration.

    Science.gov (United States)

    2010-01-01

    ... the State in accordance with the provisions of this part, 7 CFR parts 235, 245, 15, 15a, 15b and, as applicable, 7 CFR part 3015, 7 CFR part 3016 and 7 CFR part 3019, and with FNS Instructions. Such agreement... 7 Agriculture 4 2010-01-01 2010-01-01 false Administration. 220.3 Section 220.3...

  20. 49 CFR 179.220-7 - Materials.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Materials. 179.220-7 Section 179.220-7 Transportation Other Regulations Relating to Transportation PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION HAZARDOUS MATERIALS REGULATIONS SPECIFICATIONS FOR TANK...

  1. 24 CFR 220.804 - Insurance premiums.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Insurance premiums. 220.804 Section... and Obligations-Projects Insured Project Improvement Loans § 220.804 Insurance premiums. (a) First premium. The lender, upon the initial endorsement of the loan for insurance, shall pay to the...

  2. Dicty_cDB: AFM220 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available AF (Link to library) AFM220 (Link to dictyBase) - - - - AFM220P (Link to Original site) AFM220F 634 AFM...220Z 697 AFM220P 1311 - - Show AFM220 Library AF (Link to library) Clone ID AFM220 (Link... to dictyBase) Atlas ID - NBRP ID - dictyBase ID - Link to Contig - Original site URL http://dictycdb.biol.tsukuba.ac.jp/CSM/AF/AFM...2-A/AFM220Q.Seq.d/ Representative seq. ID AFM220P (Link to... Original site) Representative DNA sequence >AFM220 (AFM220Q) /CSM/AF/AFM2-A/AFM220Q.Seq.d/ ATTATTTTTTATTTTA

  3. 12 CFR 303.220 - Scope.

    Science.gov (United States)

    2010-01-01

    ... of the FDI Act (Consent to Service of Persons Convicted of Certain Criminal Offenses) § 303.220 Scope. This subpart covers applications under section 19 of the FDI Act (12 U.S.C. 1829). Pursuant to...

  4. Dicty_cDB: SSA220 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SS (Link to library) SSA220 (Link to dictyBase) - - - Contig-U16278-1 SSA220Z (Link... to Original site) - - SSA220Z 485 - - - - Show SSA220 Library SS (Link to library) Clone ID SSA220 (Link to...ycdb.biol.tsukuba.ac.jp/CSM/SS/SSA2-A/SSA220Q.Seq.d/ Representative seq. ID SSA22...0Z (Link to Original site) Representative DNA sequence >SSA220 (SSA220Q) /CSM/SS/SSA2-A/SSA220Q.Seq.d/ XXXXX...y system >> prediction for SSA220 is nuc 5' end seq. ID - 5' end seq. - Length of 5' end seq. - 3' end seq. ID SSA

  5. 46 CFR 401.220 - Registration of pilots.

    Science.gov (United States)

    2010-10-01

    ... affecting § 401.220, see the List of CFR Sections Affected, which appears in the Finding Aids section of the... 46 Shipping 8 2010-10-01 2010-10-01 false Registration of pilots. 401.220 Section 401.220 Shipping... Registration of Pilots § 401.220 Registration of pilots. (a) The Director shall determine the number of...

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

    International Nuclear Information System (INIS)

    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

  7. 46 CFR 119.220 - Installations.

    Science.gov (United States)

    2010-10-01

    ... PASSENGERS OR WITH OVERNIGHT ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS MACHINERY INSTALLATION Propulsion Machinery § 119.220 Installations. (a) The installation requirements for machinery and boilers for steam and... subchapter J (Electrical Engineering) of this chapter. (b) Installation of propulsion machinery of an...

  8. 30 CFR 220.032 - Inventories.

    Science.gov (United States)

    2010-07-01

    ... Inventories. (a) The lessee is responsible for NPSL materiel and shall make proper and timely cost and credit... reasonable intervals, but at least once every three years, inventories of controllable materiel shall be... audit as provided in § 220.033. Inventory adjustments of controllable materiel shall be made by...

  9. Etiological and clinical analysis on 220 children with cerebrovascular diseases

    Directory of Open Access Journals (Sweden)

    Zhi-hong TANG

    2014-03-01

    Full Text Available Etiological and clinical analyses of 220 children with cerebrovascular diseases were retrospectively analyzed. One hundred and forty-nine cases (67.73% were male, and 71 cases (32.27% were female. There were 186 cases (84.55% of patients to be found with clear causes, most of which were arteriovenous malformation (80/220, 36.36%, traumatic brain injury (38/220, 17.27%, intracranial infection (15/220, 6.82% , intracranial aneurysm (13/220, 5.91% , delayed vitamin K deficiency (12/220, 5.45% , congenital heart disease (9/220, 4.09% and cavernous malformation (7/220, 3.18%. The etiological and clinical features of children cerebrovascular diseases are distinct, and timely diagnosis and treatment will help to improve patients' prognosis. doi: 10.3969/j.issn.1672-6731.2014.03.017

  10. 20 CFR 220.1 - Introduction of part.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Introduction of part. 220.1 Section 220.1... DISABILITY General § 220.1 Introduction of part. (a) This part explains how disability determinations are... defined in the Social Security Act and the regulations of the Social Security Administration. (b) In...

  11. 49 CFR 220.305 - Use of personal electronic devices.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Use of personal electronic devices. 220.305 Section 220.305 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION RAILROAD COMMUNICATIONS Electronic Devices § 220.305 Use of personal electronic devices. A...

  12. 49 CFR 220.303 - General use of electronic devices.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false General use of electronic devices. 220.303 Section 220.303 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION RAILROAD COMMUNICATIONS Electronic Devices § 220.303 General use of electronic devices. A...

  13. 20 CFR 220.63 - Conflict of interest.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Conflict of interest. 220.63 Section 220.63 Employees' Benefits RAILROAD RETIREMENT BOARD REGULATIONS UNDER THE RAILROAD RETIREMENT ACT DETERMINING DISABILITY Consultative Examinations § 220.63 Conflict of interest. All implications of possible conflict...

  14. 30 CFR 220.010 - NPSL capital account.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 2 2010-07-01 2010-07-01 false NPSL capital account. 220.010 Section 220.010... § 220.010 NPSL capital account. (a) For each NPSL tract, an NPSL capital account shall be established and maintained by the lessee for NPSL operations. The NPSL capital account shall include debit...

  15. 7 CFR 65.220 - Processed food item.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Processed food item. 65.220 Section 65.220 Agriculture..., PEANUTS, AND GINSENG General Provisions Definitions § 65.220 Processed food item. Processed food item... other covered commodity or other substantive food component (e.g., chocolate, breading, tomato...

  16. 49 CFR 220.35 - Ending a radio transmission.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Ending a radio transmission. 220.35 Section 220.35 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION RAILROAD COMMUNICATIONS Radio and Wireless Communication Procedures § 220.35 Ending a radio transmission....

  17. 49 CFR 220.45 - Radio communication shall be complete.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Radio communication shall be complete. 220.45 Section 220.45 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD... § 220.45 Radio communication shall be complete. Any radio communication which is not fully understood...

  18. 7 CFR 220.20 - Free and reduced price breakfasts.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 4 2010-01-01 2010-01-01 false Free and reduced price breakfasts. 220.20 Section 220..., DEPARTMENT OF AGRICULTURE CHILD NUTRITION PROGRAMS SCHOOL BREAKFAST PROGRAM § 220.20 Free and reduced price breakfasts. The determination of the children to whom free and reduced price breakfasts are to be...

  19. 21 CFR 573.220 - Feed-grade biuret.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 6 2010-04-01 2010-04-01 false Feed-grade biuret. 573.220 Section 573.220 Food... DRUGS, FEEDS, AND RELATED PRODUCTS FOOD ADDITIVES PERMITTED IN FEED AND DRINKING WATER OF ANIMALS Food Additive Listing § 573.220 Feed-grade biuret. The food additive feed grade biuret may be safely used...

  20. 20 CFR 220.36 - Period of disability.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Period of disability. 220.36 Section 220.36... DISABILITY Disability Determinations Governed by the Regulations of the Social Security Administration § 220.36 Period of disability. (a) General. In order to receive an annuity based upon a disability,...

  1. 9 CFR 381.220 - Definition of “State”.

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Definition of âStateâ. 381.220 Section 381.220 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... Clearly Endanger the Public Health; Disposition of Poultry Products Therein § 381.220 Definition of...

  2. 49 CFR 179.220-14 - Openings in the tanks.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Openings in the tanks. 179.220-14 Section 179.220... TANK CARS Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW and 115AW) § 179.220-14 Openings in the tanks. Openings in the inner container and the outer shell must be reinforced in...

  3. 49 CFR 179.220-23 - Test of tanks.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Test of tanks. 179.220-23 Section 179.220-23... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION HAZARDOUS MATERIALS REGULATIONS SPECIFICATIONS FOR TANK CARS Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW and 115AW) § 179.220-23 Test of tanks. (a)...

  4. 49 CFR 179.220-9 - Compartment tanks.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Compartment tanks. 179.220-9 Section 179.220-9... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION HAZARDOUS MATERIALS REGULATIONS SPECIFICATIONS FOR TANK CARS Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW and 115AW) § 179.220-9 Compartment tanks....

  5. THE Arp 220 MERGER ON kpc SCALES

    Energy Technology Data Exchange (ETDEWEB)

    Koenig, S. [Dark Cosmology Centre, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark); Garcia-Marin, M.; Eckart, A. [I. Physikalisches Institut, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln (Germany); Downes, D. [Institut de Radioastronomie Millimetrique, Domaine Universitaire, F-38406 St. Martin d' Heres (France); Scharwaechter, J., E-mail: skoenig@dark-cosmology.dk [Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston Creek, ACT 2611 (Australia)

    2012-07-20

    For the first time, we study the eastern nucleus in greater detail and search for the more extended emission in the molecular gas in different CO line transitions of the famous ultraluminous infrared galaxy (ULIRG) Arp 220. Furthermore, we present a model of the merger in Arp 220 on large scales with the help of the CO data and an optical and near-infrared composite Hubble Space Telescope image of the prototypical ULIRG. Using the Plateau de Bure interferometer (PdBI), we obtained CO (2-1) and (1-0) data at wavelengths of 1 and 3 mm in 1994, 1996, 1997, and 2006 at different beam sizes and spatial resolutions. The simulations of the merger in Arp 220 were performed with the Identikit modeling tool. The model parameters that describe the galaxy merger best give a mass ratio of 1:2 and result in a merger of {approx}6 Multiplication-Sign 10{sup 8} yr. The low-resolution CO (1-0) PdBI observations suggest that there are indications for emission {approx}10'' toward the south, as well as to the north and to the west of the two nuclei.

  6. The Arp 220 merger on kpc scales

    CERN Document Server

    König, S; Eckart, A; Downes, D; Scharwächter, J

    2012-01-01

    For the first time we study the Eastern nucleus in greater detail and search for the more extended emission in the molecular gas in different CO line transitions of the famous ULIRG Arp 220. Furthermore we present a model of the merger in Arp 220 on large scales with the help of the CO data and an optical and near-infrared composite HST image of the prototypical ULIRG. Using the Plateau de Bure Interferometer (PdBI) we obtained CO(2-1) and (1-0) data at wavelengths of 1 and 3 mm in 1994, 1996, 1997 and 2006 at different beam sizes and spatial resolutions. The simulations of the merger in Arp 220 were performed with the Identikit modeling tool. The model parameters that describe the galaxy merger best give a mass ratio of 1:2 and result in a merger of ~6x10^8 yrs. The low resolution CO(1-0) PdBI observations suggest that there are indications for emission ~10" towards the south, as well as to the north and to the west of the two nuclei.

  7. CompTIA A+ complete study guide exams 220-801 and 220-802

    CERN Document Server

    Docter, Quentin; Skandier, Toby

    2012-01-01

    CompTIA Authorized, fully updated Study Guide for the leading IT certification: CompTIA A+ CompTIA A+ is the de facto certification for IT technicians. Some vendors even require employees to achieve certification as part of their job training. This book prepares you for both required exams: 220-801 and 220-802. Totally updated to cover the 2012 exams, this popular prep guide covers all the exam objectives. Readers will also have access to additional study tools, including the Sybex Test Engine with bonus practice exams, electronic flashcards, and a glossary of important terms in searchable PD

  8. 2 CFR 3000.220 - What contracts and subcontracts, in addition to those listed in 2 CFR 180.220, are covered...

    Science.gov (United States)

    2010-01-01

    ... to those listed in 2 CFR 180.220, are covered transactions? 3000.220 Section 3000.220 Grants and... NONPROCUREMENT DEBARMENT AND SUSPENSION Covered Transactions § 3000.220 What contracts and subcontracts, in addition to those listed in 2 CFR 180.220, are covered transactions? Department of Homeland...

  9. Factorisation of RSA-220 with CADO-NFS

    OpenAIRE

    Bai, Shi; Gaudry, Pierrick; Kruppa, Alexander; Thomé, Emmanuel; Zimmermann, Paul

    2016-01-01

    We give details of the factorization of RSA-220 with CADO-NFS. This is a new record computation with this open-source software. We report on the factorization of RSA-220 (220 decimal digits), which is the 3rd largest integer factorization with the General Number Field Sieve (GNFS), after the factorization of RSA-768 (232 digits) in December 2009 [3], and that of 3 697 + 1 (221 digits) in February 2015 by NFS@home.

  10. An upper limit to polarized submillimetre emission in Arp 220

    CERN Document Server

    Seiffert, M; Scott, D; Halpern, M; Seiffert, Michael; Borys, Colin; Scott, Douglas; Halpern, Mark

    2006-01-01

    We report the results of pointed observations of the prototypical ultra-luminous infrared galaxy (ULIRG) Arp 220 at 850 microns using the polarimeter on the SCUBA instrument on the James Clerk Maxwell Telescope. We find a Bayesian 99 per cent confidence upper limit on the polarized emission for Arp 220 of 1.54 per cent, averaged over the 15 arcsec beam-size. Arp 220 can serve as a proxy for other, more distant such galaxies. This upper limit constrains the magnetic field geometry in Arp 220 and also provides evidence that polarized ULIRGs will not be a major contaminant for next-generation cosmic microwave background polarization measurements.

  11. The unbearable opaqueness of Arp220

    Science.gov (United States)

    Martín, S.; Aalto, S.; Sakamoto, K.; González-Alfonso, E.; Muller, S.; Henkel, C.; García-Burillo, S.; Aladro, R.; Costagliola, F.; Harada, N.; Krips, M.; Martín-Pintado, J.; Mühle, S.; van der Werf, P.; Viti, S.

    2016-05-01

    Context. The origin of the enormous luminosities of the two opaque nuclei of Arp 220, the prototypical ultra-luminous infrared galaxy, remains a mystery because we lack observational tools to explore the innermost regions around the nuclei. Aims: We explore the potential of imaging vibrationally excited molecular emission at high angular resolution to better understand the morphology and physical structure of the dense gas in Arp 220 and to gain insight into the nature of the nuclear powering sources. Methods: The Atacama Large Millimeter/submillimeter Array (ALMA) provided simultaneous observations of HCN, HCO+, and vibrationally excited HCN v2 = 1f emission. Their J = 4-3 and 3-2 transitions were observed at a matching resolution of ~0.5'', which allows us to isolate the emission from the two nuclei. Results: The HCN and HCO+ lines within the ground-vibrational state poorly describe the central ~100 pc region around the nuclei because there are strong effects of cool absorbing gas in the foreground and severe line blending that is due to the prolific molecular emission of Arp 220. Vibrationally excited emission of HCN is detected in both nuclei with a very high ratio relative to the total LFIR, higher than in any other observed galaxy and well above what is observed in Galactic hot cores. HCN v2 = 1f is observed to be marginally resolved in ~60 × 50 pc regions inside the dusty ~100 pc sized nuclear cores. Its emission is centered on our derived individual nuclear velocities based on HCO+ emission (VWN = 5342 ± 4 and VEN = 5454 ± 8 km s-1, for the western and eastern nucleus, respectively). With virial masses within r ~ 25-30 pc based on the HCN v2 = 1f line widths, we estimate gas surface densities (gas fraction fg = 0.1) of 3 ± 0.3 × 104 M⊙ pc-2 (WN) and 1.1 ± 0.1 × 104 M⊙ pc-2 (EN). The 4-3/3-2 flux density ratio could be consistent with optically thick emission, which would further constrain the size of the emitting region to >15 pc (EN) and >22 pc

  12. 46 CFR 8.220 - Recognition of a classification society.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Recognition of a classification society. 8.220 Section 8... INSPECTION ALTERNATIVES Recognition of a Classification Society § 8.220 Recognition of a classification society. (a) A classification society must be recognized by the Commandant before it may receive...

  13. 10 CFR 600.220 - Standards for financial management systems.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Standards for financial management systems. 600.220... Post-Award Requirements § 600.220 Standards for financial management systems. (a) A State must expend... prohibitions of applicable statutes. (b) The financial management systems of other grantees and...

  14. 27 CFR 41.220 - Change in individual name.

    Science.gov (United States)

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2010-04-01 2010-04-01 false Change in individual name. 41.220 Section 41.220 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU... Change in individual name. Where there is a change in the name of an individual operating as an...

  15. 20 CFR 220.45 - Providing evidence of disability.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Providing evidence of disability. 220.45... DETERMINING DISABILITY Evidence of Disability § 220.45 Providing evidence of disability. (a) General. The claimant for a disability annuity is responsible for providing evidence of the claimed disability and...

  16. 20 CFR 220.128 - Age as a vocational factor.

    Science.gov (United States)

    2010-04-01

    ... national economy. (2) If the claimant is close to retirement age (60-64) and has a severe impairment, the... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Age as a vocational factor. 220.128 Section 220.128 Employees' Benefits RAILROAD RETIREMENT BOARD REGULATIONS UNDER THE RAILROAD RETIREMENT...

  17. 20 CFR 220.170 - The trial work period.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false The trial work period. 220.170 Section 220.170 Employees' Benefits RAILROAD RETIREMENT BOARD REGULATIONS UNDER THE RAILROAD RETIREMENT ACT DETERMINING DISABILITY Trial Work Period and Reentitlement Period for Annuitants Disabled for Any...

  18. 13 CFR 134.220 - Prohibition against ex parte communications.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Prohibition against ex parte communications. 134.220 Section 134.220 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION RULES OF... concerning any fact, question of law, or SBA policy relevant to the merits of a case before that Judge...

  19. 20 CFR 404.220 - Average-monthly-wage method.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Average-monthly-wage method. 404.220 Section... INSURANCE (1950- ) Computing Primary Insurance Amounts Average-Monthly-Wage Method of Computing Primary Insurance Amounts § 404.220 Average-monthly-wage method. (a) Who is eligible for this method. You...

  20. The unbearable opaqueness of Arp 220

    CERN Document Server

    Martín, S; Sakamoto, K; González-Alfonso, E; Muller, S; Henkel, C; García-Burillo, S; Aladro, R; Costagliola, F; Harada, N; Krips, M; Martín-Pintado, J; Mühle, S; van der Werf, P; Viti, S

    2016-01-01

    We explore the potential of imaging vibrationally excited molecular emission at high angular resolution to better understand the morphology and physical structure of the dense gas in Arp~220 and to gain insight into the nature of the nuclear powering sources. Vibrationally excited emission of HCN is detected in both nuclei with a very high ratio relative to the total $L_{FIR}$, higher than in any other observed galaxy and well above what is observed in Galactic hot cores. HCN $v_2=1f$ is observed to be marginally resolved in $\\sim60\\times50$~pc regions inside the dusty $\\sim100$~pc sized nuclear cores. Its emission is centered on our derived individual nuclear velocities based on HCO$^+$ emission ($V_{WN}=5342\\pm4$ and $V_{EN}=5454\\pm8$~\\kms, for the western and eastern nucleus, respectively). With virial masses within $r\\sim25-30$~pc based on the HCN~$v_2=1f$ line widths, we estimate gas surface densities (gas fraction $f_g=0.1$) of $3\\pm0.3\\times10^4~M_\\odot~\\rm pc^{-2}$ (WN) and $1.1\\pm0.1\\times10^4~M_\\odo...

  1. Behavior of {sup 220}Rn progeny in diffusion chamber

    Energy Technology Data Exchange (ETDEWEB)

    Nikezic, D. [Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000 Kragujevac (Serbia)]. E-mail: nikezic@kg.ac.yu; Stevanovic, N. [Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000 Kragujevac (Serbia)

    2007-01-01

    The distribution of {sup 220}Rn (thoron) within the cylindrical diffusion chamber decreases exponentially with the distance from the entry filter. The first {sup 220}Rn progeny {sup 216}Po follows its parent due to its very short half life. Other {sup 220}Rn progeny are almost completely deposited, but the deposition is not uniform. Deposition occurs on all internal surfaces of cylinder including vertical wall as well as its bases. Deposition on the upper and lower base is enhanced in the middle and drops toward to the end while the deposition on 'vertical' wall is larger closer to the entry membrane.

  2. Buffering acid TF-220B%缓冲酸TF-220B

    Institute of Scientific and Technical Information of China (English)

    孙清森

    2012-01-01

    Acetic acid is usually used to adjust the pH value of dye bath in nylon and polyester dyeing. Instability of the dye bath will affect color yield, shade and color fastness of the dyeings. The use of buffering acid TF-220B to adjust pH value of the dye bath of 4. 0~5.0, can ensure the stability and reproducibility of dyeing process, and improve color yield, brightness and color fastness.%锦纶、涤纶织物染色采用醋酸调节染浴的pH值,染浴稳定性不佳,影响染色织物的得色、色光及染色牢度.通过加入缓冲酸TF-220B以调节pH值,使染浴的pH值维持在4.0 ~5.0之间,保证了染色工艺的稳定性及染色的重现性,还可以提高染色织物的得色量、鲜艳度和色牢度.

  3. 1997 County Pesticide Use Estimates for 220 Compounds

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This dataset includes information for 220 pesticides on the average amount (pounds) applied to 87 agricultural crops and the acres of crops treated for counties...

  4. 7 CFR 220.5 - Method of payment to States.

    Science.gov (United States)

    2010-01-01

    ... AGRICULTURE CHILD NUTRITION PROGRAMS SCHOOL BREAKFAST PROGRAM § 220.5 Method of payment to States. Funds to be paid to any State for the School Breakfast Program shall be made available by means of Letters...

  5. Report on 220 cases of endoscopic septoplasty with submucous resection

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Objective To explore the efficiency of endoscopic septoplasty with submucous resection for the treatment of 220 patients with deviated nasal septum and report our experience in this field.Methods From May 2006 to May 2010,220 patients with deviated nasal septum were treated by endoscopic septoplasty with submucous resection to decompress the stress points,resect the deviated parts and implant the reshaped bone of nasal septum,while retaining the normal structure of nasal septum with minimally invasive techn...

  6. {sup 220}Rn and its progeny in dwellings of Korea

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Chang-Kyu [International Atomic Energy Agency, Agency' s Laboratories, A-1400, Vienna (Austria)], E-mail: chang.kyu.kim@iaea.org; Kim, Young-Jae; Lee, Hwa-Yong; Chang, Byung-Uck [Korea Institute of Nuclear Safety, P.O. Box 114, Yusong, Daejeon 305-338 (Korea, Republic of); Tokonami, Shinji [Radon Research Group, National Institute of Radiological Sciences (Japan)

    2007-09-15

    Concentrations of {sup 220}Rn and its progeny were measured in 450 dwellings from 2002 to 2004 using two kinds of simple passive {sup 222}Rn and {sup 220}Rn monitors, Radopot{sup TM} and {sup 220}Rn progeny monitor. The annual arithmetic mean (AM) and geometric mean (GM) of {sup 220}Rn concentrations were 40.4 and 10.7Bqm{sup -3}, respectively. The annual arithmetic mean (AM) of EEC{sub Tn} concentration was 0.89{+-}0.70Bqm{sup -3}, and the annual geometric mean (GM) was 0.60Bqm{sup -3} (95% confidence interval: 0.43-0.78Bqm{sup -3}). The concentrations of {sup 220}Rn in Korean-style houses built with mud block were about two times higher than those in apartments. The average annual effective dose due to inhalation exposure to {sup 220}Rn and its progeny in dwellings was 0.25mSvy{sup -1}.

  7. 220 GHZ Zenith Atmospheric Transparency at Iao, Hanle

    CERN Document Server

    Ananthasubramanian, P G; Prabhu, T P; Yamamoto, Satoshi; Prabhu, Tushar P.

    2002-01-01

    We present 220 GHz (1.36 mm) measurements of zenith optical depth obtained to characterise the Indian Astronomical Observatory, Hanle (Ladakh, India) during the period from late December 1999 to early May 2000 and early October 2000 to September 2001. The data were sampled at an interval of 10 minutes. We describe the automated 220 GHz tipping radiometer used, its basic principle, operation, data acquisition method and data reduction scheme in detail. The 220 GHz opacity is found to be less than 0.06 for a significant fraction (40%) of the time during the winter months, indicating that Hanle is one of the good observing sites for submillimeter-wave astronomy. We make a preliminary correlation with the precipitable water vapour derived from surface relative humidity and air temperature measurements made during the same period with a weather station installed at the site. We also compare the Hanle site with other high-altitude sites like Mauna Kea and Atacama desert.

  8. Parsec-scale magnetic fields in Arp 220

    CERN Document Server

    McBride, James; Heiles, Carl; Bower, Geoffrey C; Sarma, Anuj P

    2014-01-01

    We present the first very-long-baseline interferometry (VLBI) detections of Zeeman splitting in another galaxy. We used Arecibo Observatory, the Green Bank Telescope, and the Very Long Baseline Array to perform dual-polarization observations of OH maser lines in the merging galaxy Arp 220. We measured magnetic fields of $\\sim$1-5 mG associated with three roughly parsec-sized clouds in the nuclear regions of Arp 220. Our measured magnetic fields have comparable strengths and the same direction as features at the same velocity identified in previous Zeeman observations with Arecibo alone. The agreement between single dish and VLBI results provides critical validation of previous Zeeman splitting observations of OH megamasers that used a single large dish. The measured magnetic field strengths indicate that magnetic energy densities are comparable to gravitational energy in OH maser clouds. We also compare our total intensity results to previously published VLBI observations of OH megamasers in Arp 220. We find ...

  9. 43 CFR 17.220 - Preschool, elementary, and secondary education.

    Science.gov (United States)

    2010-10-01

    ... requirements promulgated by the Department of Education at 34 CFR part 104, subpart D. ... Handicap § 17.220 Preschool, elementary, and secondary education. This section applies to preschool... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Preschool, elementary, and...

  10. 40 CFR 300.220 - Related Title III issues.

    Science.gov (United States)

    2010-07-01

    ... PLAN Planning and Preparedness § 300.220 Related Title III issues. Other related Title III requirements are found in 40 CFR part 355. ... 40 Protection of Environment 27 2010-07-01 2010-07-01 false Related Title III issues....

  11. 33 CFR 209.220 - Flood control regulations.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Flood control regulations. 209..., DEPARTMENT OF DEFENSE ADMINISTRATIVE PROCEDURE § 209.220 Flood control regulations. (a) Local protection... probable date of transfer. (b) Use of storage allocated for flood control or navigation at...

  12. 49 CFR Appendix A to Part 220 - Recommended Phonetic Alphabet

    Science.gov (United States)

    2010-10-01

    ...—JULIET K—KILO L—LIMA M—MIKE N—NOVEMBER O—OSCAR P—PAPA Q—QUEBEC R—ROMEO S—SIERRA T—TANGO U—UNIFORM V... appendix A of part 220 does not exist in 49 CFR parts 200 to 399, revised as of Oct. 1, 1997....

  13. VLBI Images of 49 Radio Supernovae in Arp 220

    Science.gov (United States)

    Lonsdale, Colin J.; Diamond, Philip J.; Thrall, Hannah; Smith, Harding E.; Lonsdale, Carol J.

    2006-08-01

    We have used a very long baseline interferometry (VLBI) array at 18 cm wavelength to image the nucleus of the luminous IR galaxy Arp 220 at ~1 pc linear resolution, with very high sensitivity. The resulting map has an rms of 5.5 μJy beam-1, and careful image analysis results in 49 confirmed point sources ranging in flux density from 1.2 mJy down to ~60 μJy. Comparison with high-sensitivity data from 12 months earlier reveals at least four new sources. The favored interpretation of these sources is that they are radio supernovae, and if all new supernovae are detectable at this sensitivity, a resulting estimate of the supernova rate in the Arp 220 system is 4+/-2 per year. The implied star formation rate is sufficient to power the entire observed far-infrared luminosity of the galaxy. The two nuclei of Arp 220 exhibit striking similarities in their radio properties, although the western nucleus is more compact, and appears to be ~3 times more luminous than the eastern nucleus. There are also some puzzling differences, and differential free-free absorption, synchrotron aging, and expansion losses may all be playing a role. Comparison with the nearby starburst galaxy M82 supports the hypothesis that the activity in Arp 220 is essentially a scaled-up version of that in M82.

  14. 20 CFR 220.142 - General information about work activity.

    Science.gov (United States)

    2010-04-01

    ... RETIREMENT ACT DETERMINING DISABILITY Substantial Gainful Activity § 220.142 General information about work activity. (a) The nature of the claimant's work. If the claimant's duties require use of the claimant's... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false General information about work activity....

  15. 20 CFR 220.62 - Reviewing reports of consultative examinations.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Reviewing reports of consultative... RAILROAD RETIREMENT ACT DETERMINING DISABILITY Consultative Examinations § 220.62 Reviewing reports of... reviewing the report: (1) Whether the report provides evidence which serves as an adequate basis...

  16. 41 CFR 101-29.220 - Market research and analysis.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true Market research and... PRODUCT DESCRIPTIONS 29.2-Definitions § 101-29.220 Market research and analysis. Market research and... to determine whether they meet user needs and to identify the market practices of firms engaged...

  17. Using 220Rn to calibrate liquid noble gas detectors

    CERN Document Server

    Kobayashi, M; Takeda, A; Kishimoto, K; Moriyama, S

    2016-01-01

    In this paper, we describe 220Rn calibration source that was developed for liquid noble gas detectors. The key advantage of this source is that it can provide 212Bi-212Po consecutive events, which enables us to evaluate the vertex resolution of a detector at low energy by comparing low-energy events of 212Bi and corresponding higher-energy alpha-rays from 212Po. Since 220Rn is a noble gas, a hot metal getter can be used when introduced using xenon as the carrier gas. In addition, no long-life radioactive isotopes are left behind in the detector after the calibration is complete; this has clear advantage over the use of 222Rn which leaves long- life radioactivity, i.e., 210Pb. Using a small liquid xenon test chamber, we developed a system to introduce 220Rn via the xenon carrier gas; we demonstrated the successful introduction of 6 times 10^2 220Rn atoms in our test environment.

  18. Inner structure and global kinematics: arp 220 revisited

    Energy Technology Data Exchange (ETDEWEB)

    Koenig, S; Garcia-Marin, M; Eckart, A [University of Cologne, Zuelpicher Str. 77, 50937 Koeln (Germany); Dowries, D [Institut de Radioastronomie Millimetrique, Domaine Universitaire, 38406 St. Martin d' HEres (France)], E-mail: skoenig@phl.uni-koeln.de

    2008-10-15

    With an infrared luminosity of 10{sup 12.2}L{sub o-dot}, Arp 220 is one of the prototypical Ultraluminous Infrared Galaxies. It's high IR luminosity, the presence of tidal tails detected in the optical, the double infrared and radio nuclei, and the perturbed optical ionized gas kinematics measured at large scales support the fact that Arp 220 is the late phase of an on-going merger. This, along with the most accepted evolutionary theories for ULIRGs, indicate that Arp 220 may evolve into an intermediate mass elliptical galaxy. Nonetheless, there are several questions that still remain open, such as the exact location and number of nuclei, their relation with the X-ray emission, and the kinematic behavior of the galaxy at different scales. Here we give an overview of what we know about Arp 220 up-to-date, regarding the NIR and radio regime, and report on new insights in kinematics and the structure on larger spatial scales of the merger making use of IRAM PdBI observations.

  19. Low background counting of 222Rn, 220Rn and 219Rn with electrostatic counters

    Science.gov (United States)

    Mong, Brian; EXO-200 Collaboration; nEXO Collaboration

    2014-09-01

    The radon counting technique based on electrostatic precipitation of progenies in gas followed by alpha spectroscopy has been applied to support the material selection programs of low background, neutrino and dark matter experiments with emphasis on EXO. An array of 8 counters operated by Laurentian University at SNOLAB and the Waste Isolation Pilot Plant have reached the sensitivity of 10 atoms/day in the uranium, thorium and actinium chains. Hardware improvements are underway to further increase the capacity and sensitivity in support of nEXO. The radon counting technique based on electrostatic precipitation of progenies in gas followed by alpha spectroscopy has been applied to support the material selection programs of low background, neutrino and dark matter experiments with emphasis on EXO. An array of 8 counters operated by Laurentian University at SNOLAB and the Waste Isolation Pilot Plant have reached the sensitivity of 10 atoms/day in the uranium, thorium and actinium chains. Hardware improvements are underway to further increase the capacity and sensitivity in support of nEXO. Supported by NSERC Project Grants ``Search for Double Beta Decay with EXO.''

  20. 20 CFR 1010.220 - How are recipients required to implement priority of service?

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false How are recipients required to implement priority of service? 1010.220 Section 1010.220 Employees' Benefits OFFICE OF THE ASSISTANT SECRETARY FOR... COVERED PERSONS Understanding Priority of Service § 1010.220 How are recipients required to...

  1. 40 CFR 415.220 - Applicability; description of the titanium dioxide production subcategory.

    Science.gov (United States)

    2010-07-01

    ... titanium dioxide production subcategory. 415.220 Section 415.220 Protection of Environment ENVIRONMENTAL... SOURCE CATEGORY Titanium Dioxide Production Subcategory § 415.220 Applicability; description of the titanium dioxide production subcategory. This subpart applies to discharges to waters of the United...

  2. 49 CFR 179.220-20 - Reinforcements, when used, and appurtenances not otherwise specified.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Reinforcements, when used, and appurtenances not otherwise specified. 179.220-20 Section 179.220-20 Transportation Other Regulations Relating to... DOT-111AW and 115AW) § 179.220-20 Reinforcements, when used, and appurtenances not otherwise...

  3. 40 CFR 80.220 - What are the downstream standards for GPA gasoline?

    Science.gov (United States)

    2010-07-01

    ... GPA gasoline? 80.220 Section 80.220 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY...-in Program § 80.220 What are the downstream standards for GPA gasoline? (a) GPA gasoline. (1) During the period February 1, 2004 through January 31, 2005, the sulfur content of GPA gasoline at...

  4. 49 CFR 220.37 - Testing radio and wireless communication equipment.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Testing radio and wireless communication equipment... Communication Procedures § 220.37 Testing radio and wireless communication equipment. (a) Each radio, and all primary and redundant wireless communication equipment used under §§ 220.9 and 220.11, shall be tested...

  5. 25 CFR 1000.220 - What regulations apply to self-governance Tribes?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false What regulations apply to self-governance Tribes? 1000.220 Section 1000.220 Indians OFFICE OF THE ASSISTANT SECRETARY, INDIAN AFFAIRS, DEPARTMENT OF THE...-DETERMINATION AND EDUCATION ACT Waiver of Regulations § 1000.220 What regulations apply to...

  6. 41 CFR 102-117.220 - What choices do I have to ship HHG?

    Science.gov (United States)

    2010-07-01

    ... Management Program (CHAMP); (3) Contracting directly with a TSP, (including a relocation company that offers... to ship HHG? 102-117.220 Section 102-117.220 Public Contracts and Property Management Federal...-TRANSPORTATION MANAGEMENT Shipping Household Goods § 102-117.220 What choices do I have to ship HHG? (a) You...

  7. 41 CFR 105-68.220 - Are any procurement contracts included as covered transactions?

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Are any procurement contracts included as covered transactions? 105-68.220 Section 105-68.220 Public Contracts and Property...) Covered Transactions § 105-68.220 Are any procurement contracts included as covered transactions?...

  8. Clinical tomographic correlations of 220 patients with neurocisticercosis, Bahia, Brazil

    OpenAIRE

    Antônio de Souza Andrade-Filho; Luiz Frederico da Silva Figuerôa; Victor Mascarenhas Andrade-Souza

    2007-01-01

    Neurocysticercosis (NCC) is a common parasitic disease in our region, presenting diversity of neurological symptoms and signs. The present study has as primary objective an evaluation of the NCC's clinical and epidemiological profile within Bahia State, by means of a prospective study of 220 patients diagnosed from March 1988 to March 1999, with a follow-up of six months. Exams, such as Computed Cranial Tomography Scan (CT), Cerebral Spine Fluid (CSF) and Electroencephalogram (EEG), were acco...

  9. 1,1 kilomeetri eest 220 miljonit krooni / Martti Kass

    Index Scriptorium Estoniae

    Kass, Martti

    2006-01-01

    Tartu maantee 1,1 kilomeetrise lõigu rekonstrueerimine Liivalaia ja Masina tänava vahel läheb varemnimetatud 100 miljoni krooni asemel maksma hoopis 220 miljonit krooni. Tallinna abilinnapea Olga Sõtnik põhjendab hinnatõusu tee-ehitusmaterjalide hindade tõusuga, Tallinna volikogu revisjonikomisjoni esimees Remo Holsmer aga kahtlustab tee-ehitajate omavahelist kokkulepet. Lisa: Üks kilomeeter maksab 200 miljonit krooni

  10. VLBI Images of 49 Radio Supernovae in Arp 220

    CERN Document Server

    Lonsdale, C J; Lonsdale, C J; Smith, H E; Thrall, H; Diamond, Philip J.; Lonsdale, Carol J.; Lonsdale, Colin J.; Smith, Harding E.; Thrall, Hannah

    2006-01-01

    We have used a Very Long Baseline Interferometry (VLBI) array at 18cm wavelength to image the nucleus of the luminous IR galaxy Arp 220 at ~1 pc linear resolution, and with very high sensitivity. The resulting map has an rms of 5.5 microJy/beam, and careful image analysis results in 49 confirmed point sources ranging in flux density from 1.2 mJy down to ~60 microJy. Comparison with high sensitivity data from 12 months earlier reveals at least four new sources. The favored interpretation of these sources is that they are radio supernovae, and if all new supernovae are detectable at this sensitivity, a resulting estimate of the supernova rate in the Arp 220 system is 4 +/- 2 per year. The implied star formation rate is sufficient to power the entire observed far-infrared luminosity of the galaxy. The two nuclei of Arp 220 exhibit striking similarities in their radio properties, though the western nucleus is more compact, and appears to be ~3 times more luminous than the eastern nucleus. There are also some puzz...

  11. Two Populations of Young Massive Star Clusters in Arp 220

    CERN Document Server

    Wilson, C D; Longden, R; Scoville, N Z; Wilson, Christine D.; Harris, William E.; Longden, Rebecca

    2006-01-01

    We present new optical observations of young massive star clusters in Arp 220, the nearest ultraluminous infrared galaxy, taken in UBVI with the Hubble Space Telescope ACS/HRC camera. We find a total of 206 probable clusters whose spatial distribution is centrally concentrated toward the nucleus of Arp 220. We use model star cluster tracks to determine ages, luminosities, and masses for 14 clusters with complete UBVI indices or previously published near-infrared data. We estimate rough masses for 24 additional clusters with I < 24 mag from BVI indices alone. The clusters with useful ages fall into two distinct groups: a ``young'' population (< 10 Myr) and an intermediate-age population (~300 Myr). There are many clusters with masses clearly above 10^6 Msun and possibly even above 10^7 Msun in the most extreme instances. These masses are high enough that the clusters being formed in the Arp 220 starburst can be considered as genuine young globular clusters. In addition, this study allows us to extend the...

  12. Clinical tomographic correlations of 220 patients with neurocisticercosis, Bahia, Brazil.

    Science.gov (United States)

    Andrade-Filho, Antônio de Souza; Figuerôa, Luiz Frederico da Silva; Andrade-Souza, Victor Mascarenhas

    2007-02-01

    Neurocysticercosis (NCC) is a common parasitic disease in our region, presenting diversity of neurological symptoms and signs. The present study has as primary objective an evaluation of the NCC's clinical and epidemiological profile within Bahia State, by means of a prospective study of 220 patients diagnosed from March 1988 to March 1999, with a follow-up of six months. Exams, such as Computed Cranial Tomography Scan (CT), Cerebral Spine Fluid (CSF) and Electroencephalogram (EEG), were accomplished in three distinct moments of these patients' evolution: at starting or diagnostic point (zero time), at after-intervention period (one month after treatment), and at control period (six months after treatment).

  13. Clinical tomographic correlations of 220 patients with neurocisticercosis, Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Antônio de Souza Andrade-Filho

    2007-02-01

    Full Text Available Neurocysticercosis (NCC is a common parasitic disease in our region, presenting diversity of neurological symptoms and signs. The present study has as primary objective an evaluation of the NCC's clinical and epidemiological profile within Bahia State, by means of a prospective study of 220 patients diagnosed from March 1988 to March 1999, with a follow-up of six months. Exams, such as Computed Cranial Tomography Scan (CT, Cerebral Spine Fluid (CSF and Electroencephalogram (EEG, were accomplished in three distinct moments of these patients' evolution: at starting or diagnostic point (zero time, at after-intervention period (one month after treatment, and at control period (six months after treatment.

  14. Clinical tomographic correlations of 220 patients with neurocisticercosis, Bahia, Brazil.

    Science.gov (United States)

    Andrade-Filho, Antônio de Souza; Figuerôa, Luiz Frederico da Silva; Andrade-Souza, Victor Mascarenhas

    2007-02-01

    Neurocysticercosis (NCC) is a common parasitic disease in our region, presenting diversity of neurological symptoms and signs. The present study has as primary objective an evaluation of the NCC's clinical and epidemiological profile within Bahia State, by means of a prospective study of 220 patients diagnosed from March 1988 to March 1999, with a follow-up of six months. Exams, such as Computed Cranial Tomography Scan (CT), Cerebral Spine Fluid (CSF) and Electroencephalogram (EEG), were accomplished in three distinct moments of these patients' evolution: at starting or diagnostic point (zero time), at after-intervention period (one month after treatment), and at control period (six months after treatment). PMID:17625739

  15. Novel Kidins220/ARMS Splice Isoforms: Potential Specific Regulators of Neuronal and Cardiovascular Development.

    Directory of Open Access Journals (Sweden)

    Nathalie Schmieg

    Full Text Available Kidins220/ARMS is a transmembrane protein playing a crucial role in neuronal and cardiovascular development. Kidins220/ARMS is a downstream target of neurotrophin receptors and interacts with several signalling and trafficking factors. Through computational modelling, we found two potential sites for alternative splicing of Kidins220/ARMS. The first is located between exon 24 and exon 29, while the second site replaces exon 32 by a short alternative terminal exon 33. Here we describe the conserved occurrence of several Kidins220/ARMS splice isoforms at RNA and protein levels. Kidins220/ARMS splice isoforms display spatio-temporal regulation during development with distinct patterns in different neuronal populations. Neurotrophin receptor stimulation in cortical and hippocampal neurons and neuroendocrine cells induces specific Kidins220/ARMS splice isoforms and alters the appearance kinetics of the full-length transcript. Remarkably, alternative terminal exon splicing generates Kidins220/ARMS variants with distinct cellular localisation: Kidins220/ARMS containing exon 32 is targeted to the plasma membrane and neurite tips, whereas Kidins220/ARMS without exon 33 mainly clusters the full-length protein in a perinuclear intracellular compartment in PC12 cells and primary neurons, leading to a change in neurotrophin receptor expression. Overall, this study demonstrates the existence of novel Kidins220/ARMS splice isoforms with unique properties, revealing additional complexity in the functional regulation of neurotrophin receptors, and potentially other signalling pathways involved in neuronal and cardiovascular development.

  16. TO-220FS封装产品的研发和制造%TO-220FS Production Development and Manufacture

    Institute of Scientific and Technical Information of China (English)

    张华洪; 鄢胜虎

    2011-01-01

    文章分析了TO-220FS封装产品的内部特点,深入研究对比传统全包封产品内部结构特点情况,介绍产品的工艺流程和过程中出现的各种技术难点,通过原因分析并采取相应的措施,顺利地解决了这些问题。同时根据产品结构特点,在解决问题的同时给出了TO-220FS大批量生产时的工艺条件、工艺技术、改造设备的技术要点,攻克了塑封针孔、去料道、电镀镀层结合不良、剪切拉筋、绝缘测试等问题,顺利地实现了批量生产。装配后产品技术指示达到国际先进水平,产品质量稳定。%This document analyzes the TO-220FS packaged product internal features,in-depth study in comparing the traditional features of the internal structure of the whole encapsulation products.It introduces products and processes that occur to meet a variety of technical difficulty,and take appropriate measures to successfully address these problems by cause analysis.And according to product structure problem-solving at the same time,the document also gives the TO-220FS process conditions,technology,equipment renewal of the technical points in mass production,It solves the problem of the pinhole,deruner,less combine for plating,tendon pull in trimming process,isolation testing etc.,after reading this document and applying the technology,the mass production can be successfully realized,the assembly technology can be reached the international advanced level of technology,product quality is steady,and customer can be very satisfied.

  17. Extreme dust disks in Arp 220 as revealed by ALMA

    CERN Document Server

    Wilson, C D; Glenn, J; Maloney, P R; Spinoglio, L; Pereira-Santaella, M

    2014-01-01

    We present new images of Arp 220 from the Atacama Large Millimeter/submillimeter Array with the highest combination of frequency (691 GHz) and resolution ($0.36 \\times 0.20^{\\prime\\prime}$) ever obtained for this prototypical ultraluminous infrared galaxy. The western nucleus is revealed to contain warm (200 K) dust that is optically thick ($\\tau_{434\\mu m} = 5.3$), while the eastern nucleus is cooler (80 K) and somewhat less opaque ($\\tau_{434\\mu m} = 1.7$). We derive full-width half-maximum diameters of $ 76 \\times \\le 70$ pc and $123 \\times 79$ pc for the western and eastern nucleus, respectively. The two nuclei combined account for ($83 ^{+65}_{-38}$ (calibration) $^{+0}_{-34}$ (systematic))% of the total infrared luminosity of Arp 220. The luminosity surface density of the western nucleus ($ \\log(\\sigma T^4) = 14.3\\pm 0.2 ^{+0}_{-0.7}$ in units of L$_\\odot$ kpc$^{-2}$) appears sufficiently high to require the presence of an AGN or a "hot starburst", although the exact value depends sensitively on the bri...

  18. A primary standard for activity concentration of {sup 220}Rn (thoron) in air

    Energy Technology Data Exchange (ETDEWEB)

    Roettger, Annette, E-mail: Annette.roettger@ptb.d [Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig (Germany); Honig, Anja; Dersch, Rainer; Ott, Oliver; Arnold, Dirk [Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig (Germany)

    2010-07-15

    Due to the short half-life of Rn-220, a primary standard for activity concentration of Rn-220 (thoron) in air (i.e. a homogeneous reference atmosphere consisting of a certified activity in a certified volume) has been considered unachievable in the past. Traceability of Rn-222 reference atmospheres is achievable using radon gas activity standards (; ) and standard volumes, and is an established method. For the short-lived radionuclide Rn-220 this procedure is not feasible, since no Rn-220 gas activity standard with a reasonable activity can be produced. This leads to a lack of traceability for measurements of Rn-220 activity concentration: only atmospheres monitored by reference instruments (i.e. secondary standards) are available. The new primary standard for the activity concentration of {sup 220}Rn developed by PTB now closes this gap in radon metrology.

  19. A simple and versatile {sup 222}Rn/{sup 220}Rn exposure chamber

    Energy Technology Data Exchange (ETDEWEB)

    Yu, K.N. E-mail: peter.yu@cityu.edu.hk; Koo, V.S.Y.; Guan, Z.J

    2002-04-01

    A simple {sup 222}Rn/{sup 220}Rn exposure chamber is described. The chamber is made of acrylic and has a volume of 0.41 m{sup 3}. The {sup 222}Rn and {sup 220}Rn sources can be operated independently or simultaneously. The concentrations of {sup 222}Rn and {sup 220}Rn were monitored by a continuous alpha spectrometer called RAD7. The capability of alpha spectrometry has removed the mutual interference between {sup 220}Rn and {sup 222}Rn, which is a major problem in measuring {sup 220}Rn. Furthermore, the capability can also provide fast response to changes in the {sup 222}Rn level and {sup 220}Rn level in the exposure chamber, with temporal resolutions of about 20 and 2 min, respectively.

  20. CPU timing routines for a CONVEX C220 computer system

    Science.gov (United States)

    Bynum, Mary Ann

    1989-01-01

    The timing routines available on the CONVEX C220 computer system in the Structural Mechanics Division (SMD) at NASA Langley Research Center are examined. The function of the timing routines, the use of the timing routines in sequential, parallel, and vector code, and the interpretation of the results from the timing routines with respect to the CONVEX model of computing are described. The timing routines available on the SMD CONVEX fall into two groups. The first group includes standard timing routines generally available with UNIX 4.3 BSD operating systems, while the second group includes routines unique to the SMD CONVEX. The standard timing routines described in this report are /bin/csh time,/bin/time, etime, and ctime. The routines unique to the SMD CONVEX are getinfo, second, cputime, toc, and a parallel profiling package made up of palprof, palinit, and palsum.

  1. FLAC (Fast Lagrangian Analysis of Continua), Version 2.20

    International Nuclear Information System (INIS)

    FLAC (Fast Lagrangian Analysis of Continua), Version 2.20, is a two-dimensional, large-strain, explicit finite difference code written for analysis of problems in geotechnical engineering. FLAC has the ability to perform static mechanical analyses as well as transient heat transfer and fluid flow simulations. Various constitutive models are available to describe linear and non-linear response of the solid. Coupling can be performed between the thermal and mechanical, as well as the fluid and mechanical, models. The following report presents the documentation specified in NUREG-0856, Documentation of Computer Codes for High Level Waste Management. The documentation is presented in three volumes. Volume 1 contains the mathematical basis for the various aspects of the code; Volume 2 is the code User's Manual, and Volume 3 presents FLAC verification, example and benchmark problems. 5 refs., 81 figs., 3 tabs

  2. 222Rn + 220Rn monitoring by alpha spectrometry

    International Nuclear Information System (INIS)

    Controlled 222Rn + 220Rn mixed atmospheres have been realised introducing calibrated sources in a stainless steel chamber. An electrostatic alpha monitor internal to the chamber has been used for an accurate discrimination of alpha peaks due to the products of the two isotopes. In the chamber, different specific activities are achieved in order to test the response of the internal reference instrument and to evaluate the possible interferences due to contemporary presence of both radon isotopes. Results show that: (i) the atmospheres are very stable, (ii) the monitor is adequate for their control because the various alpha lines are well evaluated and (iii) using TyvekR filter, the efficiency of monitor is stable and constant vs. activity. (authors)

  3. Autumn at Titan's South Pole: The 220 cm-1 Cloud

    Science.gov (United States)

    Jennings, D. E.; Cottini, V.; Achterberg, R. K.; Anderson, C. M.; Flasar, F. M.; de Kok, R. J.; Teanby, N. A.; Coustenis, A.; Vinatier, S.

    2015-10-01

    Beginning in 2012 an atmospheric cloud known by its far-infrared emission has formed rapidly at Tit an's South Pole [1, 2]. The build-up of this condensate is a result of deepening temperatures and a gathering of gases as Winter approaches. Emission from the cloud in the south has been doubling each year since 2012, in contrast to the north where it has halved every 3.8 years since 2004. The morphology of the cloud in the south is quite different from that in the north. In the north, the cloud has extended over the whole polar region beyond 55 N, whereas in the south the cloud has been confined to within about 10 degrees of the pole. The cloud in the north has had the form of a uniform hood, whereas the southern cloud has been much more complex. A map from December 2014,recorded by the Composite Infrared Spectrometer (CIRS) on Cassini, showed the 220 cm-1 emission coming from a distinct ring with a maximum at about 80 S. In contrast, emissions from the gases HC3N, C4H2 and C6H6 peaked near the pole and had a ring at 70 S. The 220 cm-1 ring at 80 S coincided with the minimum in the gas emission pattern. The80 S condensate ring encompassed the vortex cloud seen by the Cassini Imaging Science Subsystem (ISS) and Visible and Infrared Mapping Spectrometer (VIMS)[3, 4]. Both the 220 cm-1 ring and the gas "bull's-eye" pattern were centered on a point that was shifted from the geographic South Pole by 4 degrees in the direction of the Sun. This corresponds to the overall tilt of Titan's atmosphere discovered from temperature maps early in the Cassini mission by Achterberg et al. [5]. The tilt may be reinforced by the presumably twice-yearly (north and south) spin-up of the atmosphere at the autumnal pole. The bull's-eye pattern of the gas emissions can be explained by the retrieved abundance distributions, which are maximum near the pole and decrease sharply toward lower latitudes, together with temperatures that are minimum at the pole and increase toward lower latitudes

  4. 一种220 GHz滤波器的设计%A novel design for 220 GHz filter

    Institute of Scientific and Technical Information of China (English)

    吴中川

    2013-01-01

      A filter with conventional air-filled rectangular waveguide inductive-iris structure is introduced for terahertz application. The filter adopts a tri-layer structure(glass-silicon-ceramic). The silicon wafer shapes the structure of inductive-iris, and the sheet glass and the sheet ceramic are bonded to the silicon wafer to form the sealed resonator. The filter is fabricated by VLSI(Very Large Scale Integration) technology including trench etching, surface metallization, anodic bonding, Au-Si eutectic bonding and dicing process. The fabrication processes are analyzed to optimize the dimensions of the filter. A filter is assembled and measured by using a signal source with up-converter and a spectrum analyzer with down-converter. And the measurement result matches the simulation result well.%  基于电感膜片矩形波导滤波器设计方法和加工流程,设计了一个220 GHz 带通滤波器。滤波器采用玻璃片—硅片—陶瓷片结构,由硅片形成电感膜片结构,玻璃片、陶瓷片键合在硅片上形成闭合的谐振腔,采用集成电路的制作工艺,在加工前分析了工艺特性,优化了滤波器尺寸,避免工艺对滤波器关键尺寸的影响。采用信号源、功率计进行测试,测试结果表明,滤波器在220 GHz具有通带特性,带内损耗约为7 dB。

  5. 16 CFR 2.20 - Petitions for review of requests for additional information or documentary material.

    Science.gov (United States)

    2010-01-01

    ... or documentary material issued under 16 CFR 803.20. (b) Second request procedures—(1) Notice. Every request for additional information or documentary material issued under 16 CFR 803.20 shall inform the... additional information or documentary material. 2.20 Section 2.20 Commercial Practices FEDERAL...

  6. 49 CFR 220.315 - Operational tests and inspections; further restrictions on use of electronic devices.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Operational tests and inspections; further restrictions on use of electronic devices. 220.315 Section 220.315 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION RAILROAD COMMUNICATIONS Electronic Devices §...

  7. 7 CFR Appendix C to Part 220 - Child Nutrition (CN) Labeling Program

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 4 2010-01-01 2010-01-01 false Child Nutrition (CN) Labeling Program C Appendix C to... SERVICE, DEPARTMENT OF AGRICULTURE CHILD NUTRITION PROGRAMS SCHOOL BREAKFAST PROGRAM Pt. 220, App. C Appendix C to Part 220—Child Nutrition (CN) Labeling Program 1. The Child Nutrition (CN) Labeling...

  8. 33 CFR 104.220 - Company or vessel personnel with security duties.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Company or vessel personnel with security duties. 104.220 Section 104.220 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF... Company or vessel personnel with security duties. Company and vessel personnel responsible for...

  9. 21 CFR 1404.220 - Are any procurement contracts included as covered transactions?

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 9 2010-04-01 2010-04-01 false Are any procurement contracts included as covered transactions? 1404.220 Section 1404.220 Food and Drugs OFFICE OF NATIONAL DRUG CONTROL POLICY GOVERNMENTWIDE... the consent of a(n) Office of National Drug Control Policy official. In that case, the...

  10. 24 CFR 220.252 - Forbearance of foreclosure and assignment of mortgage.

    Science.gov (United States)

    2010-04-01

    ... assignment of mortgage. 220.252 Section 220.252 Housing and Urban Development Regulations Relating to Housing... COMMISSIONER, DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT MORTGAGE AND LOAN INSURANCE PROGRAMS UNDER NATIONAL HOUSING ACT AND OTHER AUTHORITIES MORTGAGE INSURANCE AND INSURED IMPROVEMENT LOANS FOR URBAN RENEWAL...

  11. 49 CFR 179.220-24 - Tests of pressure relief valves.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Tests of pressure relief valves. 179.220-24 Section 179.220-24 Transportation Other Regulations Relating to Transportation PIPELINE AND HAZARDOUS...-24 Tests of pressure relief valves. Each safety relief valve must be tested by air or gas...

  12. 50 CFR 665.220 - Hawaii coral reef ecosystem fisheries. [Reserved

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 9 2010-10-01 2010-10-01 false Hawaii coral reef ecosystem fisheries. 665.220 Section 665.220 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE (CONTINUED) FISHERIES IN THE WESTERN PACIFIC...

  13. 25 CFR 170.220 - What is the Population Adjustment Factor?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false What is the Population Adjustment Factor? 170.220 Section... ROADS PROGRAM Indian Reservation Roads Program Funding Population Adjustment Factor § 170.220 What is the Population Adjustment Factor? The Population Adjustment Factor (PAF) is a special portion of...

  14. 7 CFR Appendix A to Part 220 - Alternate Foods for Meals

    Science.gov (United States)

    2010-01-01

    ... Vitamin C ......do 20 Niacin ......do 2.65 Folacin ......do .04 Iron 4 ......do 4.4 Calcium ......do 120... acceptable products plus 1/2 pint of fluid milk (as defined in § 220.2 of the regulations (7 CFR part 220... alternate protein products must be safe and suitable edible products produced from plant or animal...

  15. 12 CFR 220.123 - Partial delayed issue contracts covering nonconvertible bonds.

    Science.gov (United States)

    2010-01-01

    ... simultaneously. In instances of this kind, institutional investors (e.g., insurance companies or pension funds... such credit (1968 Federal Reserve Bulletin 328; 12 CFR 207.101; ¶ 6800 Published Interpretations of the... obligations of both become fixed. (f) Section 220.7(a) of the Board's Regulation T (12 CFR 220.7(a)), with...

  16. 46 CFR 179.220 - Location of watertight bulkheads for subdivision.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Location of watertight bulkheads for subdivision. 179.220 Section 179.220 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS) SUBDIVISION, DAMAGE STABILITY, AND WATERTIGHT INTEGRITY Subdivision and Damage Stability Requirements §...

  17. 40 CFR 436.220 - Applicability; description of the bentonite subcategory.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 29 2010-07-01 2010-07-01 false Applicability; description of the bentonite subcategory. 436.220 Section 436.220 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS MINERAL MINING AND PROCESSING POINT SOURCE CATEGORY...

  18. 45 CFR 400.220 - Counting time-eligibility of refugees.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 2 2010-10-01 2010-10-01 false Counting time-eligibility of refugees. 400.220 Section 400.220 Public Welfare Regulations Relating to Public Welfare OFFICE OF REFUGEE RESETTLEMENT, ADMINISTRATION FOR CHILDREN AND FAMILIES, DEPARTMENT OF HEALTH AND HUMAN SERVICES REFUGEE RESETTLEMENT...

  19. First bounds on the very high energy gamma-ray emission from Arp 220

    CERN Document Server

    Albert, J

    2006-01-01

    Using the Major Atmospheric Gamma Imaging Cherenkov Telescope (MAGIC), we have observed the nearest ultra-luminous infrared galaxy Arp 220 for about 15 hours. No significant signal was detected within the dedicated amount of observation time. The first upper limits to the very high energy $\\gamma$-ray flux of Arp 220 are herein reported and compared with theoretical expectations.

  20. 20 CFR 220.127 - When the only work experience is arduous unskilled physical labor.

    Science.gov (United States)

    2010-04-01

    ... only work experience is arduous unskilled physical labor. (a) Arduous work. Arduous work is primarily physical work requiring a high level of strength or endurance. The Board will consider the claimant unable... unskilled physical labor. 220.127 Section 220.127 Employees' Benefits RAILROAD RETIREMENT BOARD...

  1. Arp220: extinction and merger-induced star formation

    CERN Document Server

    Engel, H; Genzel, R; Tacconi, L J; Sturm, E; Downes, D

    2011-01-01

    We analyse new spatially resolved integral field spectroscopic H- and K-band data at a resolution of 0.3arcsec (100pc) and re-analyse interferometric CO(2-1) line observations of the prototypical merging system Arp220. We find that the majority of the K-band luminosity is due to a 10Myr old starburst, with a significant contribution from an underlying ca 1Gyr old stellar population, and a small contribution from stars less than 8Myr old. The Calzetti (2000) reddening law provides the best fit to photometric datapoints spanning 0.45um -- 2.12um. Furthermore, estimates of the bolometric luminosity from IRAS fluxes in conjunction with our stellar population analysis indicate that we observe less than 10% of the emitted K-band light. The stellar and CO(2-1) kinematic centre of the western nucleus coincides with the compact hot dust emission, indicating that the latter marks the centre of the gravitational potential. In the eastern nucleus, the CO(2-1) data are well matched by a model in which the gas orbits aroun...

  2. The far-infrared spectrum of Arp 220

    CERN Document Server

    González-Alfonso, E; Fischer, J; Cernicharo, J

    2004-01-01

    ISO/LWS grating observations of the ultraluminous infrared galaxy Arp 220 shows absorption in molecular lines of OH, H$_2$O, CH, NH, and NH$_3$, as well as in the [O I] 63 $\\mu$m line and emission in the [C II] 158 $\\mu$m line. We have modeled the continuum and the emission/absorption of all observed features by means of a non-local radiative transfer code. The continuum from 25 to 1300 $\\mu$m is modeled as a warm (106 K) nuclear region that is optically thick in the far-infrared, attenuated by an extended region (size 2$''$) that is heated mainly through absorption of nuclear infrared radiation. The molecular absorption in the nuclear region is characterized by high excitation due to the high infrared radiation density. The OH column densities are high toward the nucleus and the extended region. The H$_2$O column density is also high toward the nucleus and lower in the extended region. The column densities in a halo are similar to what are found in the diffuse clouds toward Sgr B2 near the Galactic Center. M...

  3. Octupole collectivity in $^{220}$Rn and $^{224}$Ra

    CERN Document Server

    Gaffney, Liam Paul

    Collective properties of the radioactive nuclei $^{220}$Rn and $^{224}$Ra have been studied via Coulomb excitation of a 2.8$\\,$A.MeV radioactive ion beam (RIB) incident upon $^{60}$Ni, $^{112,114}$Cd and $^{120}$Sn targets. The experiments took place at the REX-ISOLDE RIB facility, CERN. De-excitation $\\gamma$-ray yields following multiple-step Coulomb excitation were detected in coincidence with recoiling target nuclei in the Miniball spectrometer. For the first time, B(E3;3$^+ \\rightarrow 0^+$) values have been directly measured with a radioactive ion beam. In the process, $^{224}$Ra becomes the heaviest post-accelerated RIB to date at ISOLDE (with the possible exception of the quasi-stable $^{238}$U). The measurements presented in this thesis represent a tripling of the number of nuclei around Z$\\simeq88$ and N$\\simeq134$, for which direct measurements of the octupole collectivity have been performed. The only previous measurements being for the relatively long-lived $^{226}$Ra. The $\\gamma$-ray yields, in...

  4. On the solar origin of the 220.7 signal

    CERN Document Server

    Jiménez, A

    2008-01-01

    Gravity modes in the Sun have been long searched during the past decades. Using their asymptotic properties Garcia et al. (2007) found the signature of the dipole g modes analyzing an spectral window between 25 and 140 muHz of velocity power spectrum obtained from the GOLF/SoHO instrument. Using this result it has been possible to check some properties of the structure of the solar interior (Garcia, Mathur & Ballot 2008) as well as some indications on the dynamics of the core. However, the individual detection of such modes remains evasive and they are needed to really improve our knowledge of the deepest layers in the Sun (Mathur et al. 2008). In this work we study the signal at 220.7 muHz which is present in most of the helioseismic instruments during the last 10 years. This signal has been previously identified as part of a g-mode candidate in the GOLF data (Turck-Chieze et al. 2004; Mathur et al. 2007) and in SPM/VIRGO (Garcia et al. 2008) with more than 90% confidence level. It could be labelled as t...

  5. Two Compton-Thick Active Nuclei in Arp 220?

    CERN Document Server

    Paggi, Alessandro; Risaliti, Guido; Wang, Junfeng; Elvis, Martin

    2013-01-01

    Narrow-band spectral imaging with sub-pixel resolution of the Chandra-ACIS archival observation of the ULIRG merger Arp 220 strongly suggests two Compton thick nuclei, spatially coincident with the infrared and radio emitting nuclear clusters, and separated by 1" (~ 365 pc at a distance of 76 Mpc). These previously undetected highly obscured AGNs - West (W) and East (E) - are imaged, and separated from neighboring sources, in the 6-7 keV band, where the Fe-K lines dominate the emission. The western nucleus is also detected at energies above 7 keV. We estimate Fe-K equivalent width ~ 1 keV or possibly greater for both sources, and observed 2-10 keV luminosities L_X < 3.2 x 10^40 erg/s (W) and <1.3 x 10^40 erg/s (E). From the observed Fe-K lines luminosities{, and assuming on the basis of the XMM-Newton spectrum that 40% of this may be from the 6.4 keV component, we evaluate 2-10 keV intrinsic luminosities L_X ~ 1 x 10^42 erg/s (W) and L_X ~ 0.4 x 10^42 erg/s (E). The inferred X-ray luminosity is at least...

  6. ALMA Resolves the Nuclear Disks of Arp 220

    CERN Document Server

    Scoville, Nick; Walter, Fabian; Vlahakis, Catherine; Koda, Jin; Bout, Paul Vanden; Barnes, Joshua; Hernquist, Lars; Sheth, Kartik; Yun, Min; Sanders, David; Armus, Lee; Cox, Pierre; Thompson, Todd; Robertson, Brant; Zschaechner, Laura; Tacconi, Linda; Torrey, Paul; Hayward, Christopher C; Genzel, Reinhard; Hopkins, Phil; van der Werf, Paul; Decarli, Roberto

    2016-01-01

    We present 90 mas (37 pc) resolution ALMA imaging of Arp 220 in the CO (1-0) line and continuum at $\\lambda = 2.6$ mm. The internal gas distribution and kinematics of both galactic nuclei are well-resolved for the first time.In the more luminous West nucleus, the major gas and dust emission extends to 0.2\\arcsec radius (80 pc); the central resolution element shows a strong peak in the dust emission but a factor 3 dip in the CO line emission. In this nucleus, the dust is apparently optically thick ($\\tau_{\\rm 2.6mm} \\sim1$) at $\\lambda = 2.6$ mm with a dust emission brightness temperature $\\sim120$ K. The column of ISM at this nucleus is $\\rm N_{H2} \\geq 2\\times10^{26}$ cm$^{-2}$, corresponding to A$_V = 10^6$ mag and 1000 gr cm$^{-2}$. The East nucleus is somewhat more elongated with radial extent 0.3\\arcsec or $\\sim120$ pc. The derived kinematics of the nuclear disks provide a good fit to the line profiles sampled every 50 mas, yielding the emissivity distributions, the rotation curves and velocity dispersio...

  7. Black hole in the West Nucleus of Arp 220

    CERN Document Server

    Downes, D

    2007-01-01

    We present new observations with the IRAM Interferometer, in its longest-baseline configuration, of the CO(2-1) line and the 1.3mm dust radiation from the Arp 220 nuclear region. The dust source in the West nucleus has a size of 0.19 x 0.13 arcsec and a 1.3mm brightness temperature of 90K. This implies that the dust ring in the West nucleus has a high opacity, with tau = 1 at 1.1mm. Not only is the dust ring itself optically thick in the submm and far-IR, but it is surrounded by the previously-known, rapidly rotating molecular disk of size 0.5 arcsec that is also optically thick in the mid-IR. The molecular ring is cooler than the hot dust disk because the CO(2-1) line is seen in absorption against the dust disk. The dust ring is massive (1E9 solar masses), compact (radius 35pc), and hot (true dust temperature 170K). It resembles rather strikingly the dust ring detected around the quasar APM 08279+52, and is most unlike the warm, extended dust sources in starburst galaxies. Because there is a strong temperatu...

  8. Kidins220/ARMS Is a Novel Modulator of Short-Term Synaptic Plasticity in Hippocampal GABAergic Neurons

    OpenAIRE

    Joachim Scholz-Starke; Fabrizia Cesca; Giampietro Schiavo; Fabio Benfenati; Pietro Baldelli

    2012-01-01

    Kidins220 (Kinase D interacting substrate of 220 kDa)/ARMS (Ankyrin Repeat-rich Membrane Spanning) is a scaffold protein highly expressed in the nervous system. Previous work on neurons with altered Kidins220/ARMS expression suggested that this protein plays multiple roles in synaptic function. In this study, we analyzed the effects of Kidins220/ARMS ablation on basal synaptic transmission and on a variety of short-term plasticity paradigms in both excitatory and inhibitory synapses using a r...

  9. AlphaGUARD测氡仪的220Rn响应研究%Response of AlphaGUARD Radon Detector to 220Rn

    Institute of Scientific and Technical Information of China (English)

    刘翠红; 张磊; 卓维海; 郭秋菊

    2010-01-01

    基于最优化电离室设计的AlphaGUARD测氡仪是目前国内外最稳定准确的商用氡探测器,其作为氡测量标准传递装置广泛应用于国内外各个氡室中.在通常氡浓度水平下,该仪器基于脉冲电离室工作原理,只记录a粒子计数,不能甄别能谱,故只能使用于纯222Rn环境的测量.为研究该仪器对环境中有可能存在的钍射气的响应,本文从AlphaGl.1ARD测氡仪两种工作模式下220Rn响应机理出发对Alpha-GUARD测氡仪的220Rn响应系数.s进行了实验研究.研究结果表明:流气模式下,采样流速为1/0 L-min-1时,220Rn的流速修正因子R为0.80;扩散模式下220Rn响应系数.s不随.Rn浓度和222Rn/220Rn混合浓度比的变化而变化,为6.09%.

  10. Thoron (220Rn) progeny reduction by an air cleaner of the polarized media filter type

    International Nuclear Information System (INIS)

    The effect of an air cleaner on 220Rn progeny atmospheres has been studied in a Radon/Thoron Test Facility (RTTF) of the walk-in type. The air cleaner consists basically of a fan and a special filter material sandwiched between two metal screens, to which an electric field is applied. The filter is of the polarized media type and uses fibreglass as material. The fan and filter system are housed in a metal case. Air is drawn from the back of the case by means of the fan and forced through the 'electrical' filter where removal of the 220Rn progeny occurs. Radon-220 progeny 'depleted' air is discharged at the top of the device. Tests were conducted in 220Rn/220Rn progeny atmospheres when the air cleaner was operating, and when it was turned off. Very pronounced effects were observed during the operation of the device, namely: a dramatic decrease in the 220Rn progeny concentrations and the total aerosol concentration, as well as a large increase in the 220Rn progeny unattached fractions and the plate-out of these radionuclides on the walls of the RTTF. The air cleaner has potential in industrial applications, which should be explored. (orig.)

  11. Nationwide indoor {sup 222}Rn and {sup 220}Rn map for India: a review

    Energy Technology Data Exchange (ETDEWEB)

    Ramachandan, T.V. [Ex-Environmental Assessment Division, Bhabha Atomic Research Center, Mumbai-450 085 (India); Sathish, L.A., E-mail: lasgayit@yahoo.com [Post Graduate Department of Physics, Government Science College, Nrupathunga Road, Bangalore 560 001 (India)

    2011-11-15

    Considering the role of radon in epidemiology, an attempt was made to make a nation-wide map of indoor {sup 222}Rn and {sup 220}Rn for India. More than 5000 measurements have been carried out in 1500 dwellings across the country comprising urban and nonurban locations. The solid state nuclear track detectors based twin cup {sup 222}Rn/{sup 220}Rn discrimination dosimeters were deployed for the measurement of indoor {sup 222}Rn, {sup 220}Rn and their progeny levels. The geometric means of estimated annual inhalation dose rate due to indoor {sup 222}Rn, {sup 220}Rn and their progeny in the dwellings was 0.94 mSvy{sup -1} (geometric standard deviation 2.5). It was observed that the major contribution to the indoor inhalation dose was due to indoor {sup 222}Rn and its progeny. However, the contribution due to indoor {sup 220}Rn and its progeny was not trivial as it was found to be about 20% of the total indoor inhalation dose rates. The indoor {sup 222}Rn levels in dwellings was significantly different depending on the nature of walls and floorings. - Highlights: > A countrywide survey on {sup 222}Rn and {sup 220}Rn levels for India was carried out in dwellings. > The regional values are obtained from the data on a few houses in that area. > Calibration factors for the measurements were derived experimentally as well as theoretically. > The {sup 222}Rn and {sup 220}Rn levels are represented on the maps.

  12. 24 CFR 901.220 - Resident participation in competitive proposals to manage the housing of a PHA.

    Science.gov (United States)

    2010-04-01

    ... competitive proposals to manage the housing of a PHA. 901.220 Section 901.220 Housing and Urban Development... § 901.220 Resident participation in competitive proposals to manage the housing of a PHA. (a) When a competitive proposal to manage the housing of a PHA in substantial default is solicited in a Request...

  13. 33 CFR 162.220 - Hoover Dam, Lake Mead, and Lake Mohave (Colorado River), Ariz.-Nev.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Hoover Dam, Lake Mead, and Lake Mohave (Colorado River), Ariz.-Nev. 162.220 Section 162.220 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY INLAND WATERWAYS NAVIGATION REGULATIONS § 162.220 Hoover Dam, Lake...

  14. 41 CFR 301-10.220 - What requirements must I meet to operate a Government automobile for official travel?

    Science.gov (United States)

    2010-07-01

    ... meet to operate a Government automobile for official travel? 301-10.220 Section 301-10.220 Public... ALLOWABLE TRAVEL EXPENSES 10-TRANSPORTATION EXPENSES Government Vehicle Government Automobiles § 301-10.220 What requirements must I meet to operate a Government automobile for official travel? You must...

  15. 12 CFR 220.118 - Time of payment for mutual fund shares purchased in a special cash account.

    Science.gov (United States)

    2010-01-01

    ... purchased in a special cash account. 220.118 Section 220.118 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM CREDIT BY BROKERS AND DEALERS (REGULATION T... to liquidation for nonpayment is that described in § 220.4(c)(2) or that described in §...

  16. 20 CFR 411.220 - What if my ticket is no longer assigned to an EN or State VR agency?

    Science.gov (United States)

    2010-04-01

    ... EN or State VR agency? 411.220 Section 411.220 Employees' Benefits SOCIAL SECURITY ADMINISTRATION THE... Who Are Using a Ticket The Extension Period § 411.220 What if my ticket is no longer assigned to an EN or State VR agency? (a) If your ticket was once assigned to an EN or State VR agency acting as an...

  17. Contrasting behavior in octupole structures observed at high spin in 220Ra and 222Th

    International Nuclear Information System (INIS)

    Alternating-parity states connected by strong E1 transitions, characteristic of a reflection-asymmetric rotor, have been observed to high spins in the isotones 220Ra and 222Th. This level structure is observed up to Jπ=29-(31-) in 220Ra while it cannot be seen beyond J+=24+(25-) in 222Th. These observations are consistent with Woods-Saxon-Bogolyubov cranking calculations which predict that the yrast band of 222Th will undergo a shape transition at J=24ℎ, in contrast to that of 220Ra which maintains its reflection asymmetry to higher spins

  18. Arp 220 - IC 4553/4: understanding the system and diagnosing the ISM

    CERN Document Server

    Baan, W A

    2007-01-01

    Arp220 is a nearby system in final stages of galaxy merger with powerful ongoing star-formation at and surrounding the two nuclei. Arp 220 was detected in HI absorption and OH Megamaser emission and later recognized as the nearest ultra-luminous infrared galaxy also showing powerful molecular and X-ray emissions. In this paper we review the available radio and mm-wave observational data of Arp 220 in order to obtain an integrated picture of the dense interstellar medium that forms the location of the powerful star-formation at the two nuclei.

  19. A 220-kilodalton glycoprotein in yeast extract inhibits Staphylococcus aureus adherence to human endothelial cells.

    OpenAIRE

    Elliott, D.A.; Hatcher, V B; Lowy, F D

    1991-01-01

    A 220-kDa glycoprotein from yeast extract causes a twofold decrease in S. aureus adherence to human endothelial cells in vitro. Medium constituents can have a significant effect on bacterial adherence interactions.

  20. 30 CFR 220.015 - Pricing of materiel purchases, transfers, and dispositions.

    Science.gov (United States)

    2010-07-01

    ... CONTINENTAL SHELF OIL AND GAS LEASES § 220.015 Pricing of materiel purchases, transfers, and dispositions. (a... pipe, shall be priced at the current market price in effect on date of movement on a minimum carload...

  1. Construction of Prokaryotic Expression Vector for pbv220/NT4-ADNF-9

    Institute of Scientific and Technical Information of China (English)

    ZHENG Guo-xi; ZHU Kang; JING Yang; WEI Jun-rong; ZHU Hong-liang

    2008-01-01

    Objective To construct a prokaryotic expression vector bearing fusion gene NT4-ADNF-9 for future studies on genetic therapies for sensorineural deafness. Methods Double strand ADNF-9 Edna was synthesized using asymmetrical primer/templates and ligated to the 3' terminal of signal and leader peptides of neurotrophin 4 (NT4). The fusion gene NT4-ADNF-9, was subeloned into prokaryotic expression vector Pbv220, and named Pbv220/NT4-ADNF-9. DNA sequence of the fusion gene was analyzed. The fusion protein was isolated by SDS-PAGE and its bioactivity was evaluated using primary culture of day 8 chicken embryonic DRGcells. Results The correct sequence of fusion gene NT4-ADNF-9 was successfully subcloned into the Pbv220 vector. The expressed ADNF-9 protein showed its effects in promoting cell survival and neurite growth. Conclusion Prokaryotic expression vector Pbv220/NT4-ADNF-9 was constructed successfully and the expressed fusion protein demonstrated satisfactory bioactivity.

  2. Electron micrography and x-ray study of dip-lacquered LiF (220)

    DEFF Research Database (Denmark)

    Palmari, J.; Rasigni, M.; Rasigni, G.;

    1991-01-01

    It has been proposed to use the 220 reflection of LiF with a multilayer deposited upon the top for simultaneous spectroscopy near Fe-k and O-k and below the C-k absorption edge (284 eV) in x-ray astronomy. We demonstrate that a substantial reduction of surface roughness is obtained by dip...... lacquering state-of-the-art polished LiF(220) surfaces. Using a microdensitometer analysis of electron micrographs of surface replicas and x-ray reflection, we have measured ∼ 10-Å rms roughness of Au-coated dip-lacquered LiF(220) crystals, as opposed to ∼ 60 Å measured on the bare LiF(220) crystal surface....

  3. Research on measurement method of 220Rn progeny aerosol size distribution

    International Nuclear Information System (INIS)

    The method for measuring 220Rn progeny aerosol activity particle size distributions was introduced through ELPI system, α spectroscopy and the energy discrimination method. The different particle sizes of the 220Rn progeny aerosols were collected and the activity size distributions in the 220Rn laboratory of the University of South China were measured by this method. The experiment results show that the activity median aerodynamic diameter (AMAD) of ThB aerosol is 237 nm, and that of ThC is 245 nm. The simple and quick method can be used to monitor the particle size distributions of 220Rn progeny aerosol in real time, the aerosol activity size distributions of ThB and ThC can be obtained by this method at the same time, and the measurement accuracy of the energy spectrum is higher than that of custom method. (authors)

  4. Effect of ventilation rate on 220Rn concentration distribution in a model house

    International Nuclear Information System (INIS)

    In recent year, the dose associated with thoron and its decay products has gained considerable attention in India. This is mainly due to increasing awareness of thoron issue in coastal regions of India commonly known as High Background Radiation Areas (HBRAs) as well as in thorium and 232U handling occupational facilities. Thoron profiling is an important aspect for thoron dosimetry in these environments. Thoron (220Rn) is being a short lived (∼ 55 sec) element; it has been presumed that 220Rn concentration distribution pattern would not be significantly affected by ventilation rate. That is why higher value of 220Rn concentration was assumed near to the source such as wall etc. while beyond a particular distance no significant value of 222Rn concentration could be observed. To investigate the effect of ventilation rate on 220Rn concentration distribution, a controlled experimental study was carried out in laboratory model house at ISS, Germany at different ventilation rate of 0.5 h-1, 4.5 h-1 and 9.0 h-1. The model house of dimensions 2.8 m x 1.5 m x 1.8 m has one door and two windows in one of the long sides, is made of from unburned adobe bricks which are plastered with thick clay layer homogeneously enriched with powered granite. For obtaining the 220Rn concentration profile, 220Rn concentration was measured at different positions using sampling cup and indigenously developed portable thoron monitor (STM). It has been observed that 220Rn concentration profile itself varies with the ventilation rate. At the ventilation rate of 0.5 h-1 a gradient in 220Rn concentration profile was observed. 220Rn concentration was found higher near to the wall and decreasing towards the centre. On the contrary, at high ventilation rate of 4.5 h-1 and 9.0 h-1, a distorted 220Rn concentration profile was observed. This is due to the turbulent mixing caused by high ventilation rate. Hence, it can be emphasized that turbulent mixing plays a crucial role in deciding 220Rn

  5. 220D-F2 from Rubus ulmifolius kills Streptococcus pneumoniae planktonic cells and pneumococcal biofilms.

    Directory of Open Access Journals (Sweden)

    Sharmila J Talekar

    Full Text Available Streptococcus pneumoniae (pneumococcus forms organized biofilms to persist in the human nasopharynx. This persistence allows the pneumococcus to produce severe diseases such as pneumonia, otitis media, bacteremia and meningitis that kill nearly a million children every year. While bacteremia and meningitis are mediated by planktonic pneumococci, biofilm structures are present during pneumonia and otitis media. The global emergence of S. pneumoniae strains resistant to most commonly prescribed antibiotics warrants further discovery of alternative therapeutics. The present study assessed the antimicrobial potential of a plant extract, 220D-F2, rich in ellagic acid, and ellagic acid derivatives, against S. pneumoniae planktonic cells and biofilm structures. Our studies first demonstrate that, when inoculated together with planktonic cultures, 220D-F2 inhibited the formation of pneumococcal biofilms in a dose-dependent manner. As measured by bacterial counts and a LIVE/DEAD bacterial viability assay, 100 and 200 µg/ml of 220D-F2 had significant bactericidal activity against pneumococcal planktonic cultures as early as 3 h post-inoculation. Quantitative MIC's, whether quantified by qPCR or dilution and plating, showed that 80 µg/ml of 220D-F2 completely eradicated overnight cultures of planktonic pneumococci, including antibiotic resistant strains. When preformed pneumococcal biofilms were challenged with 220D-F2, it significantly reduced the population of biofilms 3 h post-inoculation. Minimum biofilm inhibitory concentration (MBIC50 was obtained incubating biofilms with 100 µg/ml of 220D-F2 for 3 h and 6 h of incubation. 220D-F2 also significantly reduced the population of pneumococcal biofilms formed on human pharyngeal cells. Our results demonstrate potential therapeutic applications of 220D-F2 to both kill planktonic pneumococcal cells and disrupt pneumococcal biofilms.

  6. 220D-F2 from Rubus ulmifolius kills Streptococcus pneumoniae planktonic cells and pneumococcal biofilms.

    Science.gov (United States)

    Talekar, Sharmila J; Chochua, Sopio; Nelson, Katie; Klugman, Keith P; Quave, Cassandra L; Vidal, Jorge E

    2014-01-01

    Streptococcus pneumoniae (pneumococcus) forms organized biofilms to persist in the human nasopharynx. This persistence allows the pneumococcus to produce severe diseases such as pneumonia, otitis media, bacteremia and meningitis that kill nearly a million children every year. While bacteremia and meningitis are mediated by planktonic pneumococci, biofilm structures are present during pneumonia and otitis media. The global emergence of S. pneumoniae strains resistant to most commonly prescribed antibiotics warrants further discovery of alternative therapeutics. The present study assessed the antimicrobial potential of a plant extract, 220D-F2, rich in ellagic acid, and ellagic acid derivatives, against S. pneumoniae planktonic cells and biofilm structures. Our studies first demonstrate that, when inoculated together with planktonic cultures, 220D-F2 inhibited the formation of pneumococcal biofilms in a dose-dependent manner. As measured by bacterial counts and a LIVE/DEAD bacterial viability assay, 100 and 200 µg/ml of 220D-F2 had significant bactericidal activity against pneumococcal planktonic cultures as early as 3 h post-inoculation. Quantitative MIC's, whether quantified by qPCR or dilution and plating, showed that 80 µg/ml of 220D-F2 completely eradicated overnight cultures of planktonic pneumococci, including antibiotic resistant strains. When preformed pneumococcal biofilms were challenged with 220D-F2, it significantly reduced the population of biofilms 3 h post-inoculation. Minimum biofilm inhibitory concentration (MBIC)50 was obtained incubating biofilms with 100 µg/ml of 220D-F2 for 3 h and 6 h of incubation. 220D-F2 also significantly reduced the population of pneumococcal biofilms formed on human pharyngeal cells. Our results demonstrate potential therapeutic applications of 220D-F2 to both kill planktonic pneumococcal cells and disrupt pneumococcal biofilms. PMID:24823499

  7. (220)Rn/(222)Rn isotope pair as a natural proxy for soil gas transport.

    Science.gov (United States)

    Huxol, Stephan; Brennwald, Matthias S; Henneberger, Ruth; Kipfer, Rolf

    2013-12-17

    Radon (Rn) is a naturally occurring radioactive noble gas, which is ubiquitous in soil gas. Especially, its long-lived isotope (222)Rn (half-life: 3.82 d) gained widespread acceptance as a tracer for gas transport in soils, while the short-lived (220)Rn (half-life: 55.6 s) found less interest in environmental studies. However, in some cases, the application of (222)Rn as a tracer in soil gas is complex as its concentrations can be influenced by changes of the transport conditions or of the (222)Rn production of the soil material. Due to the different half-lives of (220)Rn and (222)Rn, the distances that can be traveled by the respective isotopes before decay differ significantly, with (220)Rn migrating over much shorter distances than (222)Rn. Therefore, the soil gas concentrations of (220)Rn and (222)Rn are influenced by processes on different length scales. In laboratory experiments in a sandbox, we studied the different transport behaviors of (220)Rn and (222)Rn resulting from changing the boundary conditions for diffusive transport and from inducing advective gas movements. From the results gained in the laboratory experiments, we propose the combined analysis of (220)Rn and (222)Rn to determine gas transport processes in soils. In a field study on soil gases in the cover soil of a capped landfill we applied the combined analysis of (220)Rn and (222)Rn in soil gas for the first time and showed the feasibility of this approach to characterize soil gas transport processes.

  8. {sup 222}Rn, {sup 220}Rn and their progeny concentrations in offices in Hong Kong

    Energy Technology Data Exchange (ETDEWEB)

    Yu, K.N. E-mail: appetery@city.edu.hk; Cheung, T.; Guan, Z.J.; Mui, B.W.N.; Ng, Y.T

    2000-04-01

    An active sampling system using charcoal canisters and an HPGe {gamma}-spectrometer was employed to survey {sup 222}Rn and {sup 220}Rn concentrations in 65 offices in Hong Kong, and a traditional method was used to record simultaneously the potential {alpha}-energy concentrations (PAEC) of {sup 222}Rn and {sup 220}Rn progeny at the same sites. The mean values of gas concentration, PAEC and equilibrium factor for {sup 222}Rn were 48{+-}32 Bq m{sup -3}, 5.2{+-}5.1 mWL and 0.38{+-}0.13, respectively, and the corresponding values for {sup 220}Rn were 14{+-}7 Bq m{sup -3}, 2.7{+-}2.1 mWL and 0.050{+-}0.016. These values were in general higher than those in dwellings in Hong Kong, which was due to the poorer fresh air exchange in offices. Factors affecting the concentrations of {sup 222}Rn, {sup 220}Rn and their progeny were also studied. The type of air conditioners and the indoor and outdoor temperature difference show some effects on {sup 222}Rn, {sup 220}Rn and progeny concentrations, while rainfall and relative humidity affect only the progeny concentrations.

  9. Decreased expression of thyroid receptor-associated protein 220 in temporal lobe tissue of patients with refractory epilepsy

    International Nuclear Information System (INIS)

    Purpose: TRAP220 (thyroid hormone receptor-associated protein) functions as a coactivator for nuclear receptors and stimulates transcription by recruiting the TRAP mediator complex to hormone responsive promoter regions. Thus, TRAP220 enhances the function of thyroid/steroid hormone receptors such as thyroid hormone and oestrogen receptors. This study investigated the expression of TRAP220 mRNA and protein level in epileptic brains comparing with human control. Methods: We examined the expression of TRAP220 mRNA and protein levels in temporal lobes from patients with chronic pharmacoresistant epilepsy who have undergone surgery. Results: Expression of TRAP220 mRNA and protein was shown to be decreased significantly in the temporal cortex of the patients with epilepsy. Conclusions: Our work showed that a decrease in TRAP220 mRNA and protein levels may be involved in the pathophysiology of epilepsy and may be associated with impairment of the brain caused by frequent seizures

  10. Application of membrane type economizer in 220 t/h boiler%膜式省煤器在220 t/h锅炉中的应用

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

      膜式省煤器在电厂锅炉得到了普遍应用,文章根据其在220 t/h锅炉上的实际应用情况,对膜式省煤器和光管式省煤器的优劣进行比较,并得出具有实际意义的结论,为今后的锅炉对流受热面的改造提供指导。%Compared the membrane economizer with properties of bare tube economizer,the former has more advantages.For 220t/h boiler tube economizer's severe wear and frequent tube explosion,the No. 1 and No. 2 boiler of low temperature economizer were trans-formed. In fact,it not only improves the boiler efficiency but also ensures no tube explosion.

  11. 220MW汽轮机通流改造经济性分析%The Economic Analysis of 220MW Steam Turbine Flow Rehabilitation

    Institute of Scientific and Technical Information of China (English)

    马晓飞; 巴特德力格

    2013-01-01

      以马头电厂220MW机组(8号)为研究对象,在额定工况和定、滑压工况下对其汽轮机通流部分改造后的经济性进行了分析,提出了节能降耗的建议及技术措施。%Taking Ma Tau power plant 220MW unit (8) as example, the economics of retrofitting of flow passage of stream turbine is analyzed under the nominal condition ,constant pressure and variable pressure conditions. Specific measures of energy saving and consumption in this field were also given.

  12. Architecture and Landscape Design for 220kV Underground Substation%220kV地下变电站建筑及景观设计

    Institute of Scientific and Technical Information of China (English)

    潘洪垚

    2011-01-01

    The paper illustrates layout characteristics and design difficulties of a 220 kV substation,analyzes the specificity and requirements in general layout,fire protection,landscape,roof waterproofing and drainage,and then elaborates the solutions to such issues.%介绍了某220 kV变电站的布置特点及设计难点,分析在总体布置、建筑消防、地面建筑景观、顶板防排水等方面的特殊性和要求,阐述了地下变电站设计中此类问题的解决方案。

  13. 220A型流通式BOD快速测定仪实验研究%The Experimental Research of 220A Type Circulating BOD Speedy Testing Instrument

    Institute of Scientific and Technical Information of China (English)

    吴雷; 张玉惠

    2001-01-01

    本实验研究采用了国际上先进的流通式快速测定BOD(水中生化需氧量)的仪器,对标准样品、地表水、生活污水、工业废水进行了精密度、准确度的实验,与标准BOD 5天法实验进行了对照分析.并且将流通式220A型BOD快速测定仪与原研制的220型加入法式的BOD快速测定仪进行了比较,对实验中的一些问题进行了分析研究.为该仪器在环保等领域的广泛应用提供了技术依据.

  14. Decolorization and biodegradation of reactive blue 220 textile dye by Lentinus crinitus extracellular extract.

    Science.gov (United States)

    Niebisch, Carolina Heyse; Malinowski, Alexandre Knoll; Schadeck, Ruth; Mitchell, David A; Kava-Cordeiro, Vanessa; Paba, Jaime

    2010-08-15

    Studies were carried on the decolorization of the textile dye reactive blue 220 (RB220) by a novel isolate of Lentinus crinitus fungi. The optimal conditions for the production of destaining activity were obtained in media containing intermediate concentrations of ammonium oxalate and glucose (10 g L(-1)) as nitrogen and carbon sources, respectively, at 28 degrees C and pH 5.5. Maximum decolorization efficiency against RB220 achieved in this study was around 95%. Ultra-violet and visible (UV-vis) spectrophotometric analyses, before and after decolorization, suggest that decolorization was due to biodegradation. This effect was associated with a putative low molecular weight laccase (41 kDa) displaying good tolerance to a wide range of pH values, salt concentrations and temperatures, suggesting a potential role for this organism in the remediation of real dye containing effluents.

  15. Measurement of the \\{220\\} lattice-plane spacing of a $^{28}$Si crystal

    CERN Document Server

    Massa, Enrico; Kuetgens, Ulrich; Ferroglio, Luca

    2010-01-01

    The spacing of the \\{220\\} lattice planes of a $^{28}$Si crystal was measured by combined x-ray and optical interferometry to a $3.5\\times 10^{-9}$ relative accuracy. The result is $d_{220}=(192014712.67 \\pm 0.67)$ am, at 20.0 $^\\circ$C and 0 Pa. This value is greater by $(1.9464 \\pm 0.0067)\\times 10^{-9} d_{220}$ than the spacing in natural Si, a difference which confirms quantum mechanics calculations. Subsequently, this crystal has been used to determine the Avogadro constant by counting the Si atoms, a key step towards a realization of the mass unit based on a conventional value of the Planck or the Avogadro constants.

  16. Peak tailing correction in measurement of 222Rn/220Rn activity concentration with α spectrum method

    International Nuclear Information System (INIS)

    α spectrum method is one of the most important methods in measurement of 222Rn/220Rn concentration in environment. However, the peak tailing from high energy particles is an obstacle for accurate measurement. To improve the accuracy of measurement, study on the mechanism and effect of the tailing were carried out, and calibrating experiments on peak tailing correction factors were also realized using ERS-2 monitor. The peak tailing correction factors and calibration factors of 222Rn and 220Rn were measured by experiment and their accuracy were also tested. It is suggested that during calibrating α spectrum monitor of 222Rn/220Rn activity concentration, the peak tailing correction and calibration factors should be recalibrated if necessary. (authors)

  17. Analysis of 220 kV Safety Power Design for Nuclear Power Project%核电机组220?kV安全电源设计

    Institute of Scientific and Technical Information of China (English)

    周志贵; 卢忠斌; 池闯正; 朱志飞

    2015-01-01

    Safety power design is one of the most important tasks which should be performed preferentially in the early nuclear power construction.According to the technical requirement of AP1000 and the site feature of Zhangzhou nuclear power plant,the design capacity and the op-timal connection to the grid are decided after theoretical analysis and emulation. Moreover, the safety and reliability of 220kV safety power in Zhangzhou nuclear power plant is discussed to meet the functional requirement of AP1000 in both service power and safety power.%安全电源的设计是核电前期工作必须优先考虑的内容之一,文章针对漳州核电厂址的自身特点和A P1000核电机组的技术要求,通过理论分析和模型计算,确定了漳州核电220 k V安全电源的设计容量和最优接入方案,论述了漳州核电AP1000机组220 kV安全电源设计方案在可靠性、安全性方面满足AP1000核电机组厂用电和安全电源的功能要求.

  18. An extensive indoor {sup 222}Rn/{sup 220}Rn monitoring in North-East India

    Energy Technology Data Exchange (ETDEWEB)

    Dwivedi, K.K. [Department of Science and Technology, Embassy of India, 2536 Massachusetts Avenue, NW, Washington, DC 20008 (United States)]. E-mail: kkdwivedi@yahoo.com; Mishra, R. [Italian National Agency for Environmental Protection and Technical Services (APAT), Via. V. Brancati 48, Rome 00144 (Italy); Tripathy, S.P. [Italian National Agency for Environmental Protection and Technical Services (APAT), Via. V. Brancati 48, Rome 00144 (Italy)

    2005-11-15

    The behaviour of ubiquitous radon (Rn222), thoron (Rn220) and their progeny in the indoor atmosphere generally reflect a complex interplay between a number of processes, the most important of which are radioactive {alpha}-decay, ventilation, attachment to aerosols and deposition on the surfaces. The present work involved a long-term (1997-2000) passive monitoring of Rn222 and Rn220 in the indoor environment of the North-Eastern region of India. This region being a zone of high seismicity, the indoor radon and thoron measurement of the region will provide a better insight and a valuable database for any study related to radon and thoron anomalies.

  19. Analysis and Treatment of Abnormal Chromatographic Result Fault in 220kV Main Transformer%一台220kV主变色谱异常故障的分析及处理

    Institute of Scientific and Technical Information of China (English)

    孔祥凤; 李进

    2012-01-01

    The abnormal chromatographic result in 220kV main transformer is analyzed. The fault position is diagnosed based on electric test results.%对220kV主变色谱异常结果进行了分析,结合电气试验对故障的位置进行了判断。

  20. Clincical Observation Effects of YGCu220 IUD Intrauterine Device(IUD)%活性元宫药铜220宫内节育器临床观察效果

    Institute of Scientific and Technical Information of China (English)

    罗莉

    2010-01-01

    目的:系统评价元宫药铜220宫内节育器的安全性、有效性.方法:选择自愿放置IUD 1350例,随机分成4组:元宫药铜220 IUD、TCu220 IUD、宫药铜200 IUD、MLCu375 IUD,并进行24个月随访.结果:活性元宫药铜220型IUD妊娠率12个月以前与对照组接近,置器24个月内优于对照组,元宫药铜220 IUD和宫药铜200 IUD副反应小,因症取出率低,较其他两种TCu220 IUD和MLCu375 IUD差异有统计学意义(P<0.05),累积续用率元宫药铜220型IUD 24个月达到98.14%,明显高于对照组(P<0.05).结论:元宫药铜220型IUD是一种副反应小、续用率高、避孕效果好的节育器,可在体内长期放置,值得临床推广使用.

  1. 220kV单相牵引变压器短路阻抗数值仿真计算%Numerical Simulation and Calculation of Short Circuit Impedance of 220kV Single-Phase Traction Transformer

    Institute of Scientific and Technical Information of China (English)

    侯世勇; 董景义; 李杰; 段玉柱

    2011-01-01

    The short circuit impedance of 220kV single-phase traction transformer is simulated and calculated with field-circuit coupling method.%采用场-路耦合方法对220kV单相牵引变压器短路阻抗进行了仿真计算。

  2. 76 FR 50809 - Eleventh Meeting: RTCA Special Committee 220: Automatic Flight Guidance and Control

    Science.gov (United States)

    2011-08-16

    ... Federal Aviation Administration Eleventh Meeting: RTCA Special Committee 220: Automatic Flight Guidance... Control DATES: The meeting will be held September 13-15, 2011, from 9 a.m. to 5 p.m., unless stated... Guidance and Control Agenda Tuesday September 13--Thursday, September 15, 2011 Tuesday, September...

  3. 5 CFR 591.220 - How does OPM calculate energy utility cost indexes?

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false How does OPM calculate energy utility... Areas Cost-Of-Living Allowances § 591.220 How does OPM calculate energy utility cost indexes? (a) OPM calculates energy utility cost indexes based on the relative cost of maintaining a standard size dwelling...

  4. 30 CFR 220.020 - Calculation of the allowance for capital recovery.

    Science.gov (United States)

    2010-07-01

    ... the capital recovery factor, and shall be debited to the NPSL capital account as specified in § 220... recovery factor. The negative product of this calculation shall be debited to the NPSL capital account as... 30 Mineral Resources 2 2010-07-01 2010-07-01 false Calculation of the allowance for...

  5. 49 CFR 176.220 - Smoking or open flame and posting of warning signs.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Smoking or open flame and posting of warning signs... CARRIAGE BY VESSEL Detailed Requirements for Class 2 (Compressed Gas) Materials § 176.220 Smoking or open flame and posting of warning signs. (a) Smoking or the use of open flame is prohibited in any hold...

  6. ALMA Imaging of HCN, CS and dust in Arp 220 and NGC 6240

    CERN Document Server

    Scoville, Nick; Walter, Fabian; Manohar, Swarnima; Zschaechner, Laura; Yun, Min; Koda, Jin; Sanders, David; Murchikova, Lena; Thompson, Todd; Robertson, Brant; Genzel, Reinhard; Hernquist, Lars; Tacconi, Linda; Brown, Robert; Narayanan, Desika; Hayward, Christopher C; Barnes, Joshua; Kartaltepe, Jeyhan; Davies, Richard; van der Werf, Paul; Fomalont, Edward

    2014-01-01

    We report ALMA Band 7 (350 GHz) imaging at 0.4 - 0.6arcsec resolution and Band 9 (696 GHz) at ~0.25arcsec resolution of the luminous IR galaxies Arp 220 and NGC 6240. The long wavelength dust continuum is used to estimate ISM masses for Arp 220 East, West and NGC 6240 of 1.9, 4.2 and 1.6x10^9 msun within radii of 69, 65 and 190 pc. The HCN emission was modeled to derive the emissivity distribution as a function of radius and the kinematics of each nuclear disk, yielding dynamical masses consistent with the masses and sizes derived from the dust emission. In Arp 220, the major dust and gas concentrations are at radii less than 50 pc in both counter-rotating nuclear disks. The thickness of the disks in Arp 220estimated from the velocity dispersion and rotation velocities are 10-20 pc and the mean gas densities are n_H2 ~10^5 cm^-3 at R < 50 pc. We develop an analytic treatment for the molecular excitation (including photon trapping), yielding volume densities for both the HCN and CS emission with n_H2 ~2x10^...

  7. 30 CFR 220.011 - Schedule of allowable direct and allocable joint costs and credits.

    Science.gov (United States)

    2010-07-01

    .... Trailer-mounted test separators Hour. Truck-mounted cement mixers Hour. Boats Day or hour. House trailers... to NPSL operations in accordance with § 220.014. (l) Ecological and environmental. Costs incurred in... relative to identification and protection of cultural resources and other environmental or...

  8. 49 CFR 220.49 - Radio communication used in shoving, backing or pushing movements.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Radio communication used in shoving, backing or... Wireless Communication Procedures § 220.49 Radio communication used in shoving, backing or pushing movements. When radio communication is used in connection with the shoving, backing or pushing of a...

  9. 47 CFR 25.220 - Non-conforming transmit/receive earth station operations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 2 2010-10-01 2010-10-01 false Non-conforming transmit/receive earth station... CARRIER SERVICES SATELLITE COMMUNICATIONS Technical Standards § 25.220 Non-conforming transmit/receive... operator acknowledging that the proposed operation of the subject non-conforming earth station with...

  10. 12 CFR 220.101 - Transactions of customers who are brokers or dealers.

    Science.gov (United States)

    2010-01-01

    ... whether it is sufficient if the broker-dealer customer, “as promptly as practicable in accordance with the... effect, whether the limitations of § 220.4(c)(8) apply to the account of a customer who is himself a... the type of customer. (c) The third question was, in effect, whether a purchase and a sale of...

  11. 49 CFR 173.220 - Internal combustion engines, self-propelled vehicles, mechanical equipment containing internal...

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Internal combustion engines, self-propelled... Than Class 1 and Class 7 § 173.220 Internal combustion engines, self-propelled vehicles, mechanical...) Applicability. An internal combustion engine, self-propelled vehicle, mechanized equipment containing...

  12. 20 CFR 220.130 - Work experience as a vocational factor.

    Science.gov (United States)

    2010-04-01

    ... RETIREMENT ACT DETERMINING DISABILITY Vocational Considerations § 220.130 Work experience as a vocational factor. (a) General—Work experience means skills and abilities the claimant has acquired through work he... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Work experience as a vocational factor....

  13. 20 CFR 220.161 - How work affects an employee disability annuity.

    Science.gov (United States)

    2010-04-01

    ... RAILROAD RETIREMENT ACT DETERMINING DISABILITY Disability Annuity Earnings Restrictions § 220.161 How work... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false How work affects an employee disability... employee earns more than $400 (after deduction of impairment-related work expenses) in employment or...

  14. 20 CFR 220.29 - Work that is considered substantial gainful activity.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Work that is considered substantial gainful... RAILROAD RETIREMENT ACT DETERMINING DISABILITY Disability Under the Railroad Retirement Act for Any Regular Employment § 220.29 Work that is considered substantial gainful activity. Work is considered to...

  15. 20 CFR 220.15 - Effects of work on occupational disability.

    Science.gov (United States)

    2010-04-01

    ... RETIREMENT ACT DETERMINING DISABILITY Disability Under the Railroad Retirement Act for Work in an Employee's Regular Railroad Occupation § 220.15 Effects of work on occupational disability. (a) Disability onset when... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Effects of work on occupational...

  16. 24 CFR 220.806 - Pro rata refund of insurance premium.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Pro rata refund of insurance... AREAS Contract Rights and Obligations-Projects Insured Project Improvement Loans § 220.806 Pro rata... equal to the pro rata portion of the current annual loan insurance premium theretofore paid which...

  17. 20 CFR 405.220 - Decision by the Federal reviewing official.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Decision by the Federal reviewing official... PROCESS FOR ADJUDICATING INITIAL DISABILITY CLAIMS Review of Initial Determinations by a Federal Reviewing Official § 405.220 Decision by the Federal reviewing official. (a) The Federal reviewing official will...

  18. CFD based simulation of thoron ((220)Rn) concentration in a delay chamber for mitigation application.

    Science.gov (United States)

    Agarwal, T K; Sahoo, B K; Gaware, J J; Joshi, M; Sapra, B K

    2014-10-01

    The release of (220)Rn gas (conventionally referred to as thoron) is an issue of concern from the radiological point of view for occupational environments pertaining to the thorium fuel cycle. Studies for understanding its release and developing systems to control it are crucial for exposure control research. A thorough study of the "Delay Volume Technique" for mitigation of (220)Rn has been carried out. Experiments have been carried out with (220)Rn source and associated measurement system in a cubical chamber (delay chamber) of 0.5 m(3) volume. For different flow conditions and inlet-outlet positions, (220)Rn transmission factor has been obtained. Computational Fluid Dynamics (CFD) technique has been employed for these experimental conditions and the simulated transmission factors have been compared. The results show that the flow and the position of the inlet and outlet play an imperative role in the transportation, mixing and subsequent mitigation of thoron inside the chamber. Predictive capability of CFD technique for such delay volume experiments has been validated in this work. A comparison has been made with uniform mixing model and it is found that the results of simulation differ appreciably from that of uniform mixing model at the tested flow regime. PMID:24860913

  19. 32 CFR 37.220 - How involved should the Government program official be in the project?

    Science.gov (United States)

    2010-07-01

    ... SECRETARY OF DEFENSE DoD GRANT AND AGREEMENT REGULATIONS TECHNOLOGY INVESTMENT AGREEMENTS Appropriate Use of Technology Investment Agreements § 37.220 How involved should the Government program official be in the... require program officials to have greater knowledge about and participation in business matters...

  20. 49 CFR 220.307 - Use of railroad-supplied electronic devices.

    Science.gov (United States)

    2010-10-01

    ... may use a railroad-supplied electronic device only for an authorized business purpose as specified by... 49 Transportation 4 2010-10-01 2010-10-01 false Use of railroad-supplied electronic devices. 220... RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION RAILROAD COMMUNICATIONS Electronic Devices §...

  1. 21 CFR 107.220 - Scope and effect of infant formula recalls.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Scope and effect of infant formula recalls. 107... SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION INFANT FORMULA Infant Formula Recalls § 107.220 Scope and effect of infant formula recalls. (a) The requirements of this subpart apply: (1) When the Food and...

  2. 3C 220.3: A Radio Galaxy Lensing a Submillimeter Galaxy

    NARCIS (Netherlands)

    Haas, Martin; Leipski, Christian; Barthel, Peter; Wilkes, Belinda J.; Vegetti, Simona; Bussmann, R. Shane; Willner, S. P.; Westhues, Christian; Ashby, Matthew L. N.; Chini, Rolf; Clements, David L.; Fassnacht, Christopher D.; Horesh, Assaf; Klaas, Ulrich; Koopmans, Léon V. E.; Kuraszkiewicz, Joanna; Lagattuta, David J.; Meisenheimer, Klaus; Stern, Daniel; Wylezalek, Dominika

    2014-01-01

    Herschel Space Observatory photometry and extensive multiwavelength follow-up have revealed that the powerful radio galaxy (PRG) 3C 220.3 at z = 0.685 acts as a gravitational lens for a background submillimeter galaxy (SMG) at z = 2.221. At an observed wavelength of 1 mm, the SMG is lensed into thre

  3. 20 CFR 220.11 - Definitions as used in this subpart.

    Science.gov (United States)

    2010-04-01

    ... capacity evaluations which provide a systematic comprehensive assessment of a claimant's overall strength, mobility, endurance and capacity to perform physically demanding tasks, such as standing, walking, lifting... Occupation § 220.11 Definitions as used in this subpart. Functional capacity test means one of a number...

  4. POST-STARBURST TIDAL TAILS IN THE ARCHETYPICAL ULTRA LUMINOUS INFRARED GALAXY Arp 220

    Energy Technology Data Exchange (ETDEWEB)

    Taniguchi, Y.; Matsubayashi, K.; Kajisawa, M.; Shioya, Y.; Ideue, Y. [Research Center for Space and Cosmic Evolution, Ehime University, Bunkyo-cho 2-5, Matsuyama, Ehime 790-8577 (Japan); Ohyama, Y. [Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 10617, Taiwan, R.O.C (China); Nagao, T. [Department of Astronomy, Kyoto University, Kitashirakawa Oiwakecho, Sakyo-ku, Kyoto 606-8502 (Japan); Murayama, T. [Astronomical Institute, Tohoku University, Aramaki, Aoba, Sendai 980-8578 (Japan); Koda, J. [Department of Physics and Astronomy, SUNY Stony Brook, Stony Brook, NY 11794-3800 (United States)

    2012-07-01

    We present our new deep optical imaging and long-slit spectroscopy for Arp 220, the archetypical ultra luminous infrared galaxy in the local universe. Our sensitive H{alpha} imaging has newly revealed large-scale H{alpha} absorption, i.e., post-starburst regions in this merger. One is found in the eastern superbubble and the other is in the two tidal tails that are clearly revealed in our deep optical imaging. The size of the H{alpha} absorption region in the eastern bubble is 5 kpc Multiplication-Sign 7.5 kpc, and the observed H{alpha} equivalent widths are {approx}2 Angstrom-Sign {+-} 0.2 Angstrom-Sign . The sizes of the northern and southern H{alpha}-absorption tidal tails are {approx}5 kpc Multiplication-Sign 10 kpc and {approx}6 kpc Multiplication-Sign 20 kpc, respectively. The observed H{alpha} equivalent widths range from 4 Angstrom-Sign to 7 Angstrom-Sign . In order to explain the presence of the two post-starburst tails, we suggest a possible multiple-merger scenario for Arp 220 in which two post-starburst disk-like structures merged into one, causing the two tails. This favors Arp 220 as a multiple merging system composed of four or more galaxies arising from a compact group of galaxies. Taking our new results into account, we discuss a star formation history in the last 1 Gyr in Arp 220.

  5. ISO-SWS spectroscopy of Arp 220 : A highly obscured starburst galaxy

    NARCIS (Netherlands)

    Sturm, E; Lutz, D; Genzel, R; Sternberg, A; Egami, E; Kunze, D; Rigopoulou, D; Bauer, OH; Feuchtgruber, H; Moorwood, AFM; deGraauw, T

    1996-01-01

    We report the first 2.4 - 45 mu m spectroscopic study of Arp 220 obtained with the Short Wavelength Spectrometer onboard ISO. Observations of mid infrared lines penetrate deep into the highly obscured regions where the luminosity originates and give direct clues to their sources of excitation. From

  6. 49 CFR 381.220 - How long will it take the agency to respond to my request for a waiver?

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false How long will it take the agency to respond to my request for a waiver? 381.220 Section 381.220 Transportation Other Regulations Relating to Transportation... How long will it take the agency to respond to my request for a waiver? You should receive a...

  7. 40 CFR 280.220 - Ownership of an underground storage tank or underground storage tank system or facility or...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 26 2010-07-01 2010-07-01 false Ownership of an underground storage tank or underground storage tank system or facility or property on which an underground storage tank or underground storage tank system is located. 280.220 Section 280.220 Protection of Environment...

  8. 12 CFR 220.127 - Independent broker/dealers arranging credit in connection with the sale of insurance premium...

    Science.gov (United States)

    2010-01-01

    ... connection with the sale of insurance premium funding programs. 220.127 Section 220.127 Banks and Banking... with the sale of insurance premium funding programs. (a) The Board's September 5, 1972, clarifying... engaged in the sale and arranging of credit in connection with such insurance premium funding programs....

  9. 32 CFR 220.11 - Special rules for automobile liability insurance and no-fault automobile insurance.

    Science.gov (United States)

    2010-07-01

    ... regarding tort liability. In addition, the provisions of 28 CFR part 43 (Department of Justice regulations... 32 National Defense 2 2010-07-01 2010-07-01 false Special rules for automobile liability insurance and no-fault automobile insurance. 220.11 Section 220.11 National Defense Department of...

  10. 77 FR 68768 - Electricity Market Transparency Provisions of Section 220 of the Federal Power Act; Notice of...

    Science.gov (United States)

    2012-11-16

    ... Commission Meeting Room at 888 First Street NE., Washington, DC 20426. \\1\\ Electricity Market Transparency Provisions of Section 220 of the Federal Power Act, Order No. 768, 77 FR 61896 (Oct. 11, 2012), FERC Stats... Energy Regulatory Commission Electricity Market Transparency Provisions of Section 220 of the...

  11. 47 CFR 90.719 - Individual channels available for assignment in the 220-222 MHz band.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Individual channels available for assignment in... Licensing and Use of Frequencies in the 220-222 MHz Band § 90.719 Individual channels available for assignment in the 220-222 MHz band. (a) Channels 171 through 200 are available to both Government and...

  12. 20 CFR 627.220 - Coordination with programs under title IV of the Higher Education Act including the Pell grant...

    Science.gov (United States)

    2010-04-01

    ... the Higher Education Act including the Pell grant program. 627.220 Section 627.220 Employees' Benefits... of the Higher Education Act including the Pell grant program. (a) Coordination. Financial assistance programs under title IV of the Higher Education Act of 1965, as amended (HEA) (the Pell Grant program,...

  13. Loss of power of a 220 VAC safety bus bar at Embalse NPP

    International Nuclear Information System (INIS)

    Embalse nuclear power plant is located at the Cordoba Province, 5 kilometres Southern the town of Embalse. It is equipped with one 600 MWe CANDU reactor. At the time of the event, which occurred on 11 October 2004, the plant was operating normally at full power. The Embalse nuclear power plant electrical power system buses are classified, in reliability decreasing order, into the following four different levels: 1) Class I: uninterrupted direct current supplies for safety related and other essential loads; 2) Class II: uninterrupted alternating current supplies for safety related and other essential loads; 3) Class III: alternating current supplies to essential auxiliaries which can tolerate the short interruption required until to start up and load the on-site standby generators and 4) Class IV: normal alternating current supplies to auxiliaries which can tolerate long duration interruptions without affecting personnel or equipment safety (Class IV is the normal source of power to Class III system). In particular, the Class II 220 VAC uninterrupted monophasic safety bus bars are composed by three 220 VAC subsystems powered by the following two sources of power: Class I uninterrupted safety bus bars (5551 BUA, BUB and BUC bars) and Class III secondary distribution 5433-MCC5 and MCC6. The Class II 220 VAC bus bars are normally powered from Class I bus bars through static monophasic inverters. Beside, in a static monophasic out of service case, Class II bus bar affected could be powered from Class III bus bars via a transformer stabilizer. Class II bus bars supplies power to both control computers and the AC instrumentation and control devices. When 220 VAC (Class II) 5542-BUC-monophasic-inverter failure was coincident with a subsequent independent failure to transfer to the Class III through static commuter 5542-SVR-C, a loss of the 220 VAC uninterrupted monophasic safety bus bar (Class II) event was caused. (author)

  14. Measurements of 222Rn and220Rn with a large size collector of radon progeny

    International Nuclear Information System (INIS)

    People have paid more attention to radon since 1980s. Radon concentrations in high background radiation areas in the south are higher than others in China, especially 220 Rn concentration is significantly high. Therefore, measurement of 222 Rn and 220 Rn concentration should be carried out there. I will introduce a large size collector of radon progeny and its applications in this paper. The collector is a sheet of polyvinyl chloride fibre with electrostatics of -500V ∼ -700V. Its size (60mm in diameter) is larger than others (26mm in diameter) that work as the same principle. The collector is more effective to adsorb radon progeny than most of others. The equipment of ZnS(Ag) Scintillation Counting System is available for large size collectors to detect radon progeny. Therefore its sensitivity of measurement is high than others. According to the different half life of radon progeny and based on both theory and experiment, a formula for discrimination and calculation of 222 Rn and 220 Rn concentrations was deduced. The 222 Rn and 220 Rn concentrations were surveyed with electrostatic collectors of radon progeny on the campus of commercial school and some other areas in Hainan, southern China. Neither 222 Rn nor 220 Rn concentrations were found significant high. However several faults underground were delineated. The collector is also used to study radon transportation. Results indicate that radon changes regularly with date when it has transported for a certain distance. Velocities of radon migration in the four media are quite different. Radon migrates more quickly in vertical tube than in the horizontal tube

  15. Measurements of 222Rn and 220Rn with a Large Size Collector of Radon Progeny

    Institute of Scientific and Technical Information of China (English)

    Wu Qifan; Jia Wenyi; Fang Fang; Wang Jun; Cheng Jianping; Liu Guilin; Zhu Li

    2003-01-01

    Radon concentrations in high background radiation areas in the south are higher than those of others in China, especially 220Rn concentration is significantly high. Therefore, measurements of 222Rn and 220 Rn concentrations should be carried out there. This paper introduces a large size collector of radon progeny and its applications. The collector is a sheet of polyvinyl chloride fiber with electrostatics of (-500 V) - ( -700 V). Its size (60 mm in diameter) is larger than those of others (26 mm in diameter) that work with the same principle. The collector is more effective to adsorb radon progeny than most of others. The equipment of ZnS(Ag) Scintillation Counting System is available for large size collectors to detect radon progeny. Therefore, its sensitivity of measurement is higher than that of others.According to the different half lives of radon progeny, and based on both theory and experiments, a formula for discrimination and calculation of 222 Rn and 220Rn concentrations is deduced. The 222Rn and 220Rn concentrations were surveyed with electrostatic collectors of radon progeny on the campus of com-mercial school and some other areas in Hainan, southern China. Neither 222Rn nor 220Rn concentration was found significantly high. However, several faults underground were delineated. The collector is also used to study radon transportation. Results indicate that radon changes regularly with date when it has transported for a certain distance. Velocities of radon migration in the four media are quite different.Radon migrates more quickly in vertical tube than in the horizontal tube.

  16. GongXi与TCu220C宫内节育环临床效果比较观察

    Institute of Scientific and Technical Information of China (English)

    麦健容; 邓晓燕

    2008-01-01

    目的:比较宫喜(GongXi)活性官腔形宫内节育环(IUD)和TCu220C IUD的临床使用效果.方法:选择自愿放置IUD的已婚育龄妇女400例,随机分成两组(200例),分别放置宫喜IUD和TCu220C IUD,并进行12个月随访观察.结果:宫喜IUD的因症取出率显著低于TCu220c IUD(P<0.05),妊娠率、脱落率、宫喜IUD与TCu220C IUD比较差异有显著性(P<0.05).结论:宫喜IUD是避孕效果优于TCu220C IUD,可在临床上推广使用.

  17. Introduction of 220t/h CFB Boilers in Chenming Paper Group%晨鸣220 t/h CFB锅炉特点概述

    Institute of Scientific and Technical Information of China (English)

    张洪伟

    2002-01-01

    @@ HG-220/9.8-L.PM18锅炉是哈尔滨锅炉厂有限责任公司为山东晨鸣纸业集团股份有限公司设计制造的循环流化床锅炉,本锅炉采用引进EVT技术,高温高压参数,单锅筒、自然循环,半露天布置,全钢结构.

  18. MCu IUD与TCu220C IUD的临床效果观察

    Institute of Scientific and Technical Information of China (English)

    邵培玲; 赵传富

    2011-01-01

    目的观察MCu IUD和TCu220C IUD的临床效果。方法选择2008年3月至5月在我站自愿要求放置IUD避孕而无禁忌症的已婚育龄妇女680例,随机分为2组,每组340例,分别放置MCu IUD和TCu220C IUD,于置器后1、3、6和12个月进行随访,以生命表法统计2种IUD的使用情况。结果2种IUD使用12个月的妊娠率、脱落率、因症取出率和续用率分别为:MCu IUD 0,1.47%,2.06%,96.47%;TCu220C 0.88%,8.53%,6.47%,84.12%,经统计学处理。2种IUD妊娠率比较,差异无统计学意义(P〉0.05);MCu IUD的脱落率明显低于TCu220C,差异有统计学意义(P〈0.01);因症取出率MCuIUD低于TCu220C IUD,差异有统计学意义(P〈0.05);续用率MCu IUD明显高于TCu220C IUD,差异有统计学意义(P〈0.01)。结论MCu IUD具有脱落率低,因症取出率低,续用率高的优点,值得在临床推广应用。

  19. Molecular characterization of the virulent infectious hematopoietic necrosis virus (IHNV strain 220-90

    Directory of Open Access Journals (Sweden)

    LaPatra Scott E

    2010-01-01

    Full Text Available Abstract Background Infectious hematopoietic necrosis virus (IHNV is the type species of the genus Novirhabdovirus, within the family Rhabdoviridae, infecting several species of wild and hatchery reared salmonids. Similar to other rhabdoviruses, IHNV has a linear single-stranded, negative-sense RNA genome of approximately 11,000 nucleotides. The IHNV genome encodes six genes; the nucleocapsid, phosphoprotein, matrix protein, glycoprotein, non-virion protein and polymerase protein genes, respectively. This study describes molecular characterization of the virulent IHNV strain 220-90, belonging to the M genogroup, and its phylogenetic relationships with available sequences of IHNV isolates worldwide. Results The complete genomic sequence of IHNV strain 220-90 was determined from the DNA of six overlapping clones obtained by RT-PCR amplification of genomic RNA. The complete genome sequence of 220-90 comprises 11,133 nucleotides (GenBank GQ413939 with the gene order of 3'-N-P-M-G-NV-L-5'. These genes are separated by conserved gene junctions, with di-nucleotide gene spacers. An additional uracil nucleotide was found at the end of the 5'-trailer region, which was not reported before in other IHNV strains. The first 15 of the 16 nucleotides at the 3'- and 5'-termini of the genome are complementary, and the first 4 nucleotides at 3'-ends of the IHNV are identical to other novirhadoviruses. Sequence homology and phylogenetic analysis of the glycoprotein genes show that 220-90 strain is 97% identical to most of the IHNV strains. Comparison of the virulent 220-90 genomic sequences with less virulent WRAC isolate shows more than 300 nucleotides changes in the genome, which doesn't allow one to speculate putative residues involved in the virulence of IHNV. Conclusion We have molecularly characterized one of the well studied IHNV isolates, 220-90 of genogroup M, which is virulent for rainbow trout, and compared phylogenetic relationship with North American

  20. The Reconstruction Research in 220T/H Boiler with Low NOx-Burner%220T/H锅炉低氮燃烧器改造研究

    Institute of Scientific and Technical Information of China (English)

    饶金华; 万清燕

    2011-01-01

    This article describes the adoption of low-NOx burner′s modification of the 220 t/h boilers in a power Plant.With the low-NOx burner′s technology,the denitrification efficiency reaches 52.2%.Furnace exit oxygen volumes,the amount of main air,secondary air,and auxiliary air volume are optimized.The reconstruction research results are helpful for innovations of other similar power boiler.%介绍了某电厂220 t/h锅炉低氮燃烧器改造工程,并对低氮燃烧器改造后,脱硝效率达到52.2%,进行炉膛出口氧量、一次风量、二次风量、三次风量和燃尽风量的优化试验,同时对改造效果进行分析,本改造可为其它小型电厂锅炉的脱硝提供了一定的经验。

  1. Kidins220/ARMS is a novel modulator of short-term synaptic plasticity in hippocampal GABAergic neurons.

    Directory of Open Access Journals (Sweden)

    Joachim Scholz-Starke

    Full Text Available Kidins220 (Kinase D interacting substrate of 220 kDa/ARMS (Ankyrin Repeat-rich Membrane Spanning is a scaffold protein highly expressed in the nervous system. Previous work on neurons with altered Kidins220/ARMS expression suggested that this protein plays multiple roles in synaptic function. In this study, we analyzed the effects of Kidins220/ARMS ablation on basal synaptic transmission and on a variety of short-term plasticity paradigms in both excitatory and inhibitory synapses using a recently described Kidins220 full knockout mouse. Hippocampal neuronal cultures prepared from embryonic Kidins220(-/- (KO and wild type (WT littermates were used for whole-cell patch-clamp recordings of spontaneous and evoked synaptic activity. Whereas glutamatergic AMPA receptor-mediated responses were not significantly affected in KO neurons, specific differences were detected in evoked GABAergic transmission. The recovery from synaptic depression of inhibitory post-synaptic currents in WT cells showed biphasic kinetics, both in response to paired-pulse and long-lasting train stimulation, while in KO cells the respective slow components were strongly reduced. We demonstrate that the slow recovery from synaptic depression in WT cells is caused by a transient reduction of the vesicle release probability, which is absent in KO neurons. These results suggest that Kidins220/ARMS is not essential for basal synaptic transmission and various forms of short-term plasticity, but instead plays a novel role in the mechanisms regulating the recovery of synaptic strength in GABAergic synapses.

  2. Effect of Y220C mutation on p53 and its rescue mechanism: a computer chemistry approach.

    Science.gov (United States)

    Rauf, Shah Md Abdur; Endou, Akira; Takaba, Hiromitsu; Miyamoto, Akira

    2013-01-01

    Mutation causes inactivation of 'p53' tumor suppressor protein in almost fifty percent of cancers in humans. Outside the DNA-binding surface of p53, Y220C is the most common cancerous mutation. Previous studies have shown that a surface cavity is created by this mutation which destabilizes p53. PhiKan083, a carbazole derivative capable of binding with that cavity, and slows down its thermal denaturation rate. We investigated, theoretically, on mechanisms of structural stability loss due to Y220C mutation and mechanisms of stability restoration by PhiKan083 at the atomic level. From this study it is found that in Tp53C, Tyr220 has five electrostatic interactions with residues Val 147, Prol51, Pro153 and Pro223 located on S3/S4 loop and S7/S8 loop. The S7/S8 loop is stabilized by these electrostatic interactions. Due to the Y220C mutation all these electrostatic interactions are lost. As a result the structural fluctuation occurs at S7/S8 loop, and the loop is displaced from its original position after 6 ns MD simulation. When PhiKan083 is present (inserted) at the mutation site it provides five electrostatic interactions with Pro155, Glu221 and Thr230, and two hydrogen bonds with Leu145 and Asp228, respectively. These interactions provided by Pkikan083 stabilized the S7/S8 loop, and as a result it couldn't be displaced. Our results showed that due to Y220C mutation p53 became destabilized through structural fluctuations surrounding the mutation site. When PhiKan083 is present at the Y220C mutation site (in 2vuk), it provides electrostatic and hydrogen bonding interactions among residue-220, its neighboring residues and PhiKan08. These interactions give additional stability to Y220C mutant p53, thus Y220C mutant p53 doesn't destabilize.

  3. Relationship of 220Rn and 222Rn progeny levels in Canadian underground U mines

    International Nuclear Information System (INIS)

    Radon-222 and 220Rn progeny are found in some Canadian underground U mines. Because both can contribute to lung dose, their experimental determinations are important. The relationship between 222Rn progeny Working Level [WL(Rn)] and 220Rn progeny Working Level [WL(Tn)] has been investigated in U mines. Experimental measurements extended from 1981 to 1986 and consisted of about 700 measurements of each WL(Rn) and WL(Tn). The data were analyzed by standard linear and power-function regression analysis. A power-function relationship between WL(Rn) and WL(Tn) seemed to fit the experimental data best. The relationship obtained permits the calculation of WL(Tn) from experimental values of WL(Rn). The relationship is useful for lung-dose-calculation purposes and in mine-ventilation-engineering calculations

  4. Realization and characterization of a 220Rn source for calibration purposes

    International Nuclear Information System (INIS)

    The recent interest for measuring 220Rn activity in air and the following development of the corresponding measurement techniques require the improvement of standards for the calibration and characterization of the measurement devices. Due to the short half-life of the 220Rn, the adopted techniques for the production of 222Rn sources are not always reliable. In this paper a methodology for realizing a thoron known activity starting from a 232Th source will be presented and discussed. - Highlights: • A thoron source realized by well characterized samples containing thorium. • Methodology for measuring exhalated thoron activity by gamma ray spectrometry. • Stable on time thoron specific activity concentration in air. • Radon isotopes spectroscopy by electrostatic collection

  5. THREE-DIMENSIONAL FLOW AROUND TWO TANDEM CIRCULAR CYLINDERS WITH VARIOUS SPACING AT Re=220

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The flow around two tandem circular cylinders was studied by a three-dimensional numerical simulation of the Navier-Stokes equations at Re=220. The improved virtual boundary method was applied to model the no-slip boundary condition of the cylinders. The results show that as the spacing ratio L/D ≥4, the three dimensionality occurs in the wake. When L/D≤3.5 the wake keeps a two-dimensional state at the Reynolds number Re=220. The critical spacing for the appearance of three-dimensional instability obtained is at the range 3.5<L/D<4, similar to the critical spacing found in two-dimensional case. Two sources of instability from upstream and downstream cylinder generate a complicated vortex structures in the wake, investigated by streamlines topology analysis in the streamwise plane. Many other interesting problems were also addressed in this paper.

  6. Comparison of outdoor activity size distributions of {sup 220}Rn and {sup 222}Rn progeny

    Energy Technology Data Exchange (ETDEWEB)

    Mohamed, A. [Physics Department, Faculty of Science, El-Minia University (Egypt)]. E-mail: amermohamed6@hotmail.com; El-Hussein, A. [Physics Department, Faculty of Science, El-Minia University (Egypt)

    2005-06-01

    Inhalation of {sup 222}Rn and {sup 220}Rn progeny from the domestic environment contributes the greatest fraction of the natural radiation exposure to the public. Dosimetric models are most often used in the assessment of human lung doses due to inhaled radioactivity because of the difficulty in making direct measurements. These models require information about the parameters of activity size distributions of thoron and radon progeny. The present study presents measured data on the attached and unattached activity size distributions of thoron and radon progeny in outdoor air in El-Minia, Egypt. The attached fraction was collected using a low-pressure Berner cascade impactor technique. A screen diffusion battery was used for collecting the unattached fraction. Most of the attached activities for {sup 222}Rn and {sup 220}Rn progeny were associated with aerosol particles of the accumulation mode. The activity size distribution of thoron progeny was found to be shifted to slightly smaller particle size compared to radon progeny.

  7. The Distribution Characteristics of 222Rn and 220Rn Concentrations in Soil Gas In Zhongshan City, Guangdong Province, China

    International Nuclear Information System (INIS)

    A mapping survey of 222Rn and 220Rn concentrations in soil gas was conducted for the first time using a RAD7 portable radon monitor at 67 locations across an area of 1800 km2 in Zhongshan City (ZSC), Guangdong Province. It was found that 222Rn concentrations increased with increasing depth, whereas 220Rn concentrations were almost unchanged at different depths. The sites with high 222Rn values were located mainly in granite outcrops, while those with low values were located in a sedimentary region. The distribution patterns of 220Rn coincide with the patterns of activity concentration of 232Th in soil. (author)

  8. ALMA IMAGING OF HCN, CS, AND DUST IN ARP 220 AND NGC 6240

    Energy Technology Data Exchange (ETDEWEB)

    Scoville, Nick; Manohar, Swarnima; Murchikova, Lena [California Institute of Technology, MC 249-17, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Sheth, Kartik [North American ALMA Science Center, National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22901 (United States); Walter, Fabian; Zschaechner, Laura [Max-Planck-Institut fur Astronomie, Konigstuhl 17, D-69117 Heidelberg (Germany); Yun, Min [Department of Astronomy, University of Massachusetts, Amherst, MA 01003 (United States); Koda, Jin [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794 (United States); Sanders, David; Barnes, Joshua [Institute for Astronomy, 2680 Woodlawn Drive, University of Hawaii, Honolulu, Hawaii, HI 96822 (United States); Thompson, Todd [Department of Astronomy, The Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Robertson, Brant; Tacconi, Linda; Narayanan, Desika [Department of Astronomy and Steward Observatory, University of Arizona, Tucson AZ 85721 (United States); Genzel, Reinhard; Davies, Richard [Max-Planck-Institut fur extraterrestrische Physik (MPE), Giessenbachstrasse, D-85748 Garching (Germany); Hernquist, Lars [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Brown, Robert [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22901 (United States); Hayward, Christopher C. [TAPIR 350-17, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Kartaltepe, Jeyhan [National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); and others

    2015-02-10

    We report ALMA Band 7 (350 GHz) imaging at 0.''4-0.''6 resolution and Band 9 (696 GHz) at ∼0.''25 resolution of the luminous IR galaxies Arp 220 and NGC 6240. The long wavelength dust continuum is used to estimate interstellar medium masses for Arp 220 east and west and NGC 6240 of 1.9, 4.2, and 1.6 × 10{sup 9} M {sub ☉}within radii of 69, 65, and 190 pc. The HCN emission was modeled to derive the emissivity distribution as a function of radius and the kinematics of each nuclear disk, yielding dynamical masses consistent with the masses and sizes derived from the dust emission. In Arp 220, the major dust and gas concentrations are at radii less than 50 pc in both counter-rotating nuclear disks. The thickness of the disks in Arp 220 estimated from the velocity dispersion and rotation velocities are 10-20 pc and the mean gas densities are n{sub H{sub 2}}∼10{sup 5} cm{sup –3} at R <50 pc. We develop an analytic treatment for the molecular excitation (including photon trapping), yielding volume densities for both the HCN and CS emission with n {sub H2} ∼ 2 × 10{sup 5} cm{sup –3}. The agreement of the mean density from the total mass and size with that required for excitation suggests that the volume is essentially filled with dense gas, i.e., it is not cloudy or like swiss cheese.

  9. Indoor 222Rn and 220Rn variations as an evidence for Boyle's law

    International Nuclear Information System (INIS)

    The 222Rn and 220Rn levels were measured for Bangalore Metropolitan, India was focused on various types of houses with respect to ventilation characteristics. Dimension of room was taken into account to correlate the air rate the virtue of number of windows and ventilation openings. Integrated and long-term measurements of radon were carried out in the dwellings using twin cup dosimeters with Solid State Nuclear Track Detector. Result shows that the concentration exponentially with the increase in room volume. (author)

  10. Release behavior of cupric ions for TCu380A and TCu220C IUDs

    Energy Technology Data Exchange (ETDEWEB)

    Cao Bianmei; Zheng Yudong [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing (China); Xi Tingfei [National Institute for the Control of Pharmaceutical and Biological Products, Beijing (China)], E-mail: xitingfei@tom.com

    2008-12-15

    We immersed copper T380A and T220C IUDs in simulated uterine solution (SUS) and also in simulated body fluid (SBF). The release rate and corrosion products of copper ions after soaking in SUS and SBF for different time spans were studied by an atomic absorption spectrophotometer, scanning electron microscopy with energy dispersive x-ray microanalysis (SEM/EDX) and x-ray diffraction. The highest corrosion rate of the TCu380A IUD was obtained on the first day, while the highest corrosion rate of the TCu220C IUD was obtained on the third day. The copper corrosion rate of the TCu380A IUD was much faster than that of the TCu220C IUD in the first few days. The corrosion extent of copper wire was higher than that of a copper tube when first immersed in solution. For the same IUD in the same solution, the corrosion extent in SBF was higher than in SUS. The main compounds identified were cuprite (Cu{sub 2}O). Copper wire and copper tubes were implanted in the uteruses of rats. In vivo experiments were also done. The corrosion rate in vivo was higher than that in vitro.

  11. Antiallergic/antiasthmatic effect of novel antiallergic hexapeptide-95/220 in various experimental models.

    Science.gov (United States)

    Singh, R; Nath, A; Gupta, P P; Shukla, M; Khare, S K; Kundu, B

    2001-09-01

    The effects of newly synthesized antiallergic hexapeptide 95/220 was investigated on various allergic and asthmatic test models. This newly developed peptide was found to be more potent than clinically used drug disodium cromoglycate (DSCG). Hexapeptide 95/220 inhibited immediate hypersensitivity reactions such as passive cutaneous anaphylaxis (PCA) and mast cell degranulation in rats, antigen-induced bronchoconstriction in actively sensitized guinea pigs in dose dependent manner like DSCG. Antigen-induced contraction of guinea pig ileum was also markedly inhibited by this newly developed hexapeptide in the same fashion as ketotifen and DSCG did but at comparatively lower dose. Egg albumin-induced histamine release was also blocked by this hexapeptide from chopped lung tissues of sensitized guinea pigs. These results suggest that hexapeptide' 95/220 has potent inhibitory effect on immediate hypersensitivity reactions thereby inhibiting mediator release from mast cell. Moreover, this newly synthesized peptide is orally active and effective at lower doses as compared to standard drugs. PMID:11831367

  12. Post-starburst Tidal Tails in the Archetypical Ultra Luminous Infrared Galaxy Arp 220

    CERN Document Server

    Taniguchi, Y; Kajisawa, M; Shioya, Y; Ohyama, Y; Nagao, T; Ideue, Y; Murayama, T; Koda, J

    2012-01-01

    We present our new deep optical imaging and long-slit spectroscopy for Arp 220 that is the archetypical ULIRG in the local universe. Our sensitive Ha imaging has newly revealed large-scale, Ha absorption, i.e., post-starburst regions in this merger; one is found in the eastern superbubble and the other is in the two tidal tails that are clearly reveled in our deep optical imaging. The size of Ha absorption region in the eastern bubble is 5 kpc x 7.5 kpc and the observed Ha equivalent widths are ~2 A +- 0.2 A. The sizes of the northern and southern Ha-absorption tidal tails are ~5 kpc x 10 kpc and ~6 kpc x 20 kpc, respectively. The observed Ha equivalent widths range from 4 A to 7 A. In order to explain the presence of the two post-starburst tails, we suggest a possible multiple-merger scenario for Arp 220 in which two post-starburst disk-like structures merged into one, and then caused the two tails. This favors that Arp 220 is a multiple merging system composed of four or more galaxies, arising from a compac...

  13. Excited OH+, H2O+, and H3O+ in NGC 4418 and Arp 220

    CERN Document Server

    González-Alfonso, E; Bruderer, S; Müller, H S P; Graciá-Carpio, J; Sturm, E; Lutz, D; Poglitsch, A; Feuchtgruber, H; Veilleux, S; Contursi, A; Sternberg, A; Hailey-Dunsheath, S; Verma, A; Christopher, N; Davies, R; Genzel, R; Tacconi, L

    2012-01-01

    We report on Herschel/PACS observations of absorption lines of OH+, H2O+ and H3O+ in NGC 4418 and Arp 220. Excited lines of OH+ and H2O+ with E_lower of at least 285 and \\sim200 K, respectively, are detected in both sources, indicating radiative pumping and location in the high radiation density environment of the nuclear regions. Abundance ratios OH+/H2O+ of 1-2.5 are estimated in the nuclei of both sources. The inferred OH+ column and abundance relative to H nuclei are (0.5-1)x10^{16} cm-2 and \\sim2x10^{-8}, respectively. Additionally, in Arp 220, an extended low excitation component around the nuclear region is found to have OH+/H2O+\\sim5-10. H3O+ is detected in both sources with N(H3O+)\\sim(0.5-2)x10^{16} cm-2, and in Arp 220 the pure inversion, metastable lines indicate a high rotational temperature of ~500 K, indicative of formation pumping and/or hot gas. Simple chemical models favor an ionization sequence dominated by H+ - O+ - OH+ - H2O+ - H3O+, and we also argue that the H+ production is most likely...

  14. The residual stress instrument with optimized Si(220) monochromator and position-sensitive detector at HANARO

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Chang-Hee [Korea Atomic Energy Research Institute, Yusung, Daejon 305-600 (Korea, Republic of); Moon, Myung-Kook [Korea Atomic Energy Research Institute, Yusung, Daejon 305-600 (Korea, Republic of)]. E-mail: moonmk@kaeri.re.kr; Em, Vyacheslav T. [Korea Atomic Energy Research Institute, Yusung, Daejon 305-600 (Korea, Republic of); Choi, Young-Hyun [Korea Atomic Energy Research Institute, Yusung, Daejon 305-600 (Korea, Republic of); Cheon, Jong-Kyu [Korea Atomic Energy Research Institute, Yusung, Daejon 305-600 (Korea, Republic of); Nam, Uk-Won [Korea Astronomy Observatory, Yusung, Daejon 305-348 (Korea, Republic of); Kong, Kyung-Nam [Korea Astronomy Observatory, Yusung, Daejon 305-348 (Korea, Republic of)

    2005-06-11

    An upgraded residual stress instrument at the HANARO reactor of the KAERI is described. A horizontally focusing bent perfect crystal Si(220) monochromator (instead of a mosaic vertical focusing Ge monochromator) is installed in a drum with a tunable (2{theta}{sub M}=0-60{sup o}) take-off angle/wavelength. A specially designed position-sensitive detector (60% efficiency for {lambda}=1.8A) with 200mm (instead of 100mm) high-active area is used. There are no Soller type collimators in the instrument. The minimum possible monochromator to sample distance, L{sub MS}=2m, and sample to detector distance, L{sub SD}=1.2m, were found to be optimal. The new PSD and bent Si(220) monochromator combined with the possibility of selecting an appropriate wavelength resulted in about a ten-fold gain in data collection rate. The optimal reflections of austenitic and ferritic steels, aluminum and nickel for stress measurements with a Si(220) monochromator were chosen experimentally. The ability of the instrument to make strain measurements deep inside the austenitic and ferritic steels has been tested. For the chosen reflections and wavelengths, no shift of peak position (apparent strain) was observed up to 56mm length of path.

  15. Clinical Observation on the Efficacy of GyneFixTM IN IUD and TCu220C IUD%GyneFix IN与TCu220C宫内节育器临床使用效果比较观察

    Institute of Scientific and Technical Information of China (English)

    邓艳

    2006-01-01

    目的:比较吉妮固定式宫内节育器(IUD)和TCu220C IUD的临床使用效果.方法:选择自愿放置IUD的已婚育龄妇女600例,随机分成两组(各300例),分别放置吉妮IUD和TCu220C IUD,并进行24个月随访观察.结果:吉妮IUD的脱落率显著低于TCu20C IUD(P<0.05),妊娠率、因症取出率及终止率,吉妮IUD与TCu220C IUD比较,有显著性差异(P<0.05).结论:吉妮IUD是避孕效果优于TCu220C IUD,可在临床上推广使用.

  16. BOD-220型快速测定仪在水质分析中的对比研究%Comparative research on water quality analysis of BOD-220 rapid tester

    Institute of Scientific and Technical Information of China (English)

    张晋红

    2012-01-01

    By taking the experimental research, the study undertakes the comparative analysis of the water quality inspection with BOD-220 rapid tester in different water quality and various pre-treatment temperatures, analyzes the experimental results, and concludes the eonditions of inspecting complicated water samples with BOD-220 rapid tester.%通过实验研究,进行了不同水质、不同预处理温度下BOD-220型快速测定仪监测水质的对比分析,并对实验结果作了剖析.得到了用BOD-220型快速测定仪监测复杂水样的条件。

  17. 220 kV同塔四回线路带电作业的探讨%Discussion of Live Work on 220 kV Same-tower-four-circuit Lines

    Institute of Scientific and Technical Information of China (English)

    胡伟; 李广帅

    2013-01-01

    With 220 kV same-tower-four-circuit HV transmission lines continuously put into operation in Hangzhou, the problems line maintenance by outage faces become increasingly visible. By investigation on safety distance for live work on 220 kV same-tower-four-circuit transmission lines, ways to enter into strong electric field,analysis on safety of live work, dangerous point and precautions,the paper discusses feasibility of live work on 220 kV same-tower-four-circuit transmission lines.%随着杭州地区220 kV同塔四回高压输电线路的不断投入运行,线路停电检修工作面临问题日益凸显。通过研究220 kV同塔架设四回输电线路带电作业的安全距离、进入强电场方法、带电作业安全性分析、危险点及预控措施分析等一系列关键问题,探讨了220 kV同塔架设四回输电线路带电作业的可行性。

  18. Analysis of HPV examination in 220 female Mongolian outpatients%蒙古族门诊体检女性220例HPV检测结果分析

    Institute of Scientific and Technical Information of China (English)

    郭兰英; 孟和; 张明

    2011-01-01

    目的 研究内蒙古地区的蒙古族女性人乳头瘤病毒(HPV)检测的优势亚型,为宫颈癌疫苗的研发和本地区投放应用提供依据.方法 通过凯普导流杂交HPV-DNA检测法(HybriMax),对220例门诊体检的蒙古族女性进行HPV21种亚型的检测并分析.结果 检测的220例标本中,HPV阳性标本为37例,阳性率为16.8%.HPV感染率由高到低的前6位HPV亚型依次为HPV16(35.4%),58(18.9%),33 (8.1%)、52(5.4%)、56(5.4%)、6(5.4%).高危型HPV在人群中所占的比率合计占91.9%,而低危亚型仅占8.1%,二组相比,差异具有统计学意义(P<0.05).结论 本次研究的蒙古族女性中HPV感染的亚型分布以16、58、33、6型为主,尤其以16亚型所占比率最高.在年龄分组中,30~40岁组中的HPV感染率明显高于其他组.有必要对该地区的重点人群进行HPV疫苗的科普宣传,提高认知程度.%Objective To investigate the predominant subtype of human papillomavirus ( HPV ) in Inner Mongolia region in order to provide the information for cervical cancer vaccine research and application. Methods Twenty - one HPV genotypes were examined with DNA flow -through hybridization technique ( HybriMax ) in 220 female Inner Mongolian outpatients. The results were analyzed. Results Of 220 women, 37 were HPV - positive( 17% ). HPV subtypes found in descending order of frequency were HPV 16 ( 35. 4% ), 58( 18.9% ) , 33( 8. 1% ), and 6 (5.4% ). The total of the high -risk HPV types in the proportion of the population accounted for 91. 9% , while only 8. 1% of low - risk types. Conclusion The study indicates HPV subtypes 16 , 58, 33 , and 6 are predominant especially the highest proportion of HPV 16 infection in Mongolian women. It is necessary to strengthen the health education for HPV vaccine.

  19. Efficient cleavage of p220 by poliovirus 2Apro expression in mammalian cells: effects on vaccinia virus.

    Science.gov (United States)

    Aldabe, R; Feduchi, E; Novoa, I; Carrasco, L

    1995-10-24

    Poliovirus protease 2A cleaves p220, a component of initiation factor eIF-4F. Polyclonal antibodies that recognize p220 and the cleaved products from different species have been raised. Transfection of several cell lines with poliovirus 2Apro cloned in different plasmids leads to efficient cleavage of p220 upon infection with VT7, a recombinant vaccinia virus that expresses the T7 RNA polymerase. Under these conditions vaccinia virus protein synthesis is severely inhibited, while expression of poliovirus protein 2C from a similar plasmid has no effect. These results show by the first time the effects of p220 cleavage on vaccinia virus translation in the infected cells.

  20. A RANDOMIZED COMPARATIVE STUDY OF MENSTRUAL PATTERNS IN MEGESTROL ACETATE IUD AND TCu220c IUD USERS

    Institute of Scientific and Technical Information of China (English)

    YANJun-Hong; PANJia-Xiang; ZHANGYa-Qin; KANGJin-Fang; LINGXiu-Ying

    1989-01-01

    This is a randomized comparative study of menstrual patterns between 30 cases of megestrol acetate IUD users and 30 cases using TCu220c IUD before and at the Ist, 3rd, 6th and 12th cycles after insertion.

  1. CD4(+)B220(+)TCRγδ(+) T cells produce IL-17 in lupus-prone MRL/lpr mice.

    Science.gov (United States)

    Qiu, Feng; Li, Tingting; Zhang, Kui; Wan, Jun; Qi, Xiaokun

    2016-09-01

    Systemic lupus erythematosus is an autoimmune disease with comprehensive immune cell disorders. Recent studies suggested that pro-inflammatory cytokine IL-17 plays important role in lupus, leaving the cellular sources and their pathogenic and physiologic characters largely unknown. In the current study, by using lupus-prone MRL/lpr mice, we demonstrated that Th17 response prevails in lupus disease regarding significantly accumulated serum IL-17, increased IL-17-producing splenocytes, and elevated phospho-STAT3 in CD4(+) T cells. Intracellular staining revealed that unusual CD4(+)B220(+) T cells are major IL-17-producing cells, whereas conventional CD4(+)B220(-) T cells are major IFN-γ-producing cells. Subsequent studies showed that CD4(+)B220(+) cells contains both αβ and γδ T cells in the spleen and thymus of MRL/lpr mice. Further study showed that around 60% of γδ T cells in MRL/lpr mice co-express both B220 and CD4 on their surface, and are the major RORγt(+) cells in MRL/lpr mice. Finally, CD4(+)B220(+) T cells alone do not proliferate, but could enhance the proliferation and IFN-γ-production of conventional CD4(+)B220(-) T cells. Our findings suggest the pathogenic role of unusual CD4(+)B220(+) T cells in lupus disease in MRL/lpr mice according to their IL-17-producing ability and stimulatory function for conventional CD4(+)B220(-) T cells. PMID:27235595

  2. Monte Carlo calculations of LR115 detector response to {sup 222}Rn in the presence of {sup 220}Rn

    Energy Technology Data Exchange (ETDEWEB)

    Nikezic, D.; Yu, K.N.

    2000-04-01

    The sensitivities (in m) of bare LR115 detectors and detectors in diffusion chambers to {sup 222}Rn and {sup 220}Rn chains are calculated by the Monte Carlo method. The partial sensitivities of bare detectors to the {sup 222}Rn chain are larger than those to the {sup 220}Rn chain, which is due to the higher energies of alpha particles in the {sup 220}Rn chain and the upper energy limit for detection for the LR115 detector. However, the total sensitivities are approximately equal because {sup 220}Rn is always in equilibrium with its first progeny, which is not the case for the {sup 222}Rn chain. The total sensitivity of bare LR115 detectors to {sup 222}Rn chain depends linearly on the equilibrium factor. The overestimation in {sup 222}Rn measurements with bare detectors caused by {sup 220}Rn in air can reach 10% in normal environmental conditions. An analytical relationship between the equilibrium factor and the ratio between track densities on the bare detector and the detector enclosed in chamber is given in the last part of the paper. This ratio is also affected by {sup 220}Rn, which can disturb the determination of the equilibrium factor.

  3. {sup 222}Rn and {sup 220}Rn concentrations in soil gas of Karkonosze-Izera Block (Sudetes, Poland)

    Energy Technology Data Exchange (ETDEWEB)

    Malczewski, Dariusz [Faculty of Earth Sciences, University of Silesia, Bedzinska 60, 41-200 Sosnowiec, Silesia (Poland)]. E-mail: malczews@us.edu.pl; Zaba, Jerzy [Faculty of Earth Sciences, University of Silesia, Bedzinska 60, 41-200 Sosnowiec, Silesia (Poland)]. E-mail: jzaba@interia.pl

    2007-07-01

    Soil gas {sup 222}Rn and {sup 220}Rn concentrations were measured at 18 locations in the Karkonosze-Izera Block area in southwestern Poland. Measurements were carried out in surface air and at sampling depths of 10, 40 and 80 cm. Surface air {sup 222}Rn concentrations ranged from 4 to 2160 Bq m{sup -3} and {sup 220}Rn ranged from 4 to 228 Bq m{sup -3}. The concentrations for 10 and 40 cm varied from 142 Bq m{sup -3} to 801 kBq m{sup -3} and 102 Bq m{sup -3} to 64 kBq m{sup -3} for {sup 222}Rn and {sup 220}Rn, respectively. At 80 cm {sup 222}Rn concentrations ranged from 94 Bq m{sup -3} to >1 MBq m{sup -3}. The {sup 220}Rn concentrations at 80 cm varied from 45 Bq m{sup -3} to 48 kBq m{sup -3}. The concentration versus depth profiles for {sup 222}Rn differed for soils developed on fault zones, uranium deposits or both. Atmospheric air temperature and soil gas {sup 222}Rn and {sup 220}Rn were negatively correlated. At sampling sites with steep slopes, {sup 220}Rn concentrations decreased with depth.

  4. Study on clinical application effect of copper T220 intrauterine devices and activeγ-IUD Ⅱintrauterine devices%TGU220IUD和安舒型IUD临床应用效果比较

    Institute of Scientific and Technical Information of China (English)

    梁洁芳

    2013-01-01

    目的 评价TGU220 IUD和安舒型IUD的临床应用效果,为推广新型IUD提供依据.方法 随机抽取2011年1月-2012年1月放置TGU220 IUD和安舒型IUD已婚育龄妇女各400例,随访1年,观察2种IUD使用效果及不良反应发生情况.结果随访1年,失访37例,TGU220 IUD组随访378例,安舒型IUD组随访385例.2组12个月带器妊娠率和非因症取出率比较差异均无统计学意义(P>0.05);安舒型IUD组12个月累计脱落率、因症取出率和总终止率低于TGU220 IUD组,12个月总续用率明显高于TGU220 IUD组,差异均有统计学意义(P<0.05,P<0.01).安舒型IUD组不良反应发生率为7.0%低于TGU220 IUD组的20.1%,差异有统计学意义(P<0.05).结论 2种IUD避孕效果可靠,但安舒型IUD在脱落率、因症取出率及不良反应发生率方面均低于TGU220 IUD组.

  5. EXTREME DUST DISKS IN Arp 220 AS REVEALED BY ALMA

    Energy Technology Data Exchange (ETDEWEB)

    Wilson, C. D. [Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1 (Canada); Rangwala, N.; Glenn, J.; Maloney, P. R. [Center for Astrophysics and Space Astronomy, 389-UCB, University of Colorado, Boulder, CO 80303 (United States); Spinoglio, L.; Pereira-Santaella, M. [Istituto di Astrofisica e Planetologia Spaziali, INAF-IAPS, Via Fosso del Cavaliere 100, I-00133 Roma (Italy)

    2014-07-10

    We present new images of Arp 220 from the Atacama Large Millimeter/submillimeter Array with the highest combination of frequency (691 GHz) and resolution (0.''36 × 0.''20) ever obtained for this prototypical ultraluminous infrared galaxy. The western nucleus is revealed to contain warm (200 K) dust that is optically thick (τ{sub 434} {sub μm} = 5.3), while the eastern nucleus is cooler (80 K) and somewhat less opaque (τ{sub 434} {sub μm} = 1.7). We derive full width at half-maximum diameters of 76 × ≤ 70 pc and 123 × 79 pc for the western and eastern nucleus, respectively. The two nuclei combined account for (83{sub −38}{sup +65} (calibration) {sub −34}{sup +0} (systematic))% of the total infrared luminosity of Arp 220. The luminosity surface density of the western nucleus (log (σT{sup 4})=14.3±0.2{sub −0.7}{sup +0} in units of L {sub ☉} kpc{sup –2}) appears sufficiently high to require the presence of an active galactic nucleus (AGN) or a ''hot starburst'', although the exact value depends sensitively on the brightness distribution adopted for the source. Although the role of any central AGN remains open, the inferred mean gas column densities of (0.6-1.8) × 10{sup 25} cm{sup –2} mean that any AGN in Arp 220 must be Compton-thick.

  6. 222Rn, 220Rn Concentrations and Miner Doses in Non-Uranium Mines in China

    International Nuclear Information System (INIS)

    A preliminary survey of 222Rn and 220Rn concentrations in non-uranium mines in China was conducted in 17 different types of mines. In total, 44 mines in 12 provinces were surveyed. The results showed that among 25 metal mines (n = 147) the arithmetic mean and geometric mean concentrations were 1214 ± 2358 and 313 ± 5.5 Bq/m3 for 222Rn, respectively (range 11–19 600 Bq/m3) and 268 ± 701 and 70 ± 4.4 Bq/m3 for 220Rn, respectively (range 220Rn, respectively (range 220Rn. The average dose in coal mines was 0.75 mSv, and in non-metal mines it was 0.38 mSv. (author)

  7. Yeast Interacting Proteins Database: YLR052W, YGL220W [Yeast Interacting Proteins Database

    Lifescience Database Archive (English)

    Full Text Available as bait (3) Rows with this bait as prey (0) YGL220W FRA2 Protein involved in negative regulation of transcri...repress iron regulon and is sensitive to nickel Rows with this prey as prey (1) Rows with this prey... with this bait as bait (3) Rows with this bait as prey Rows with this bait as prey... to repress iron regulon and is sensitive to nickel Rows with this prey as prey Rows with this prey as pre...y (1) Rows with this prey as bait Rows with this prey as bait (1) Literature on bai

  8. Multiple reflection-asymmetric type band structures in $^{220}Th$ and dinuclear model

    CERN Document Server

    Shneidman, T M; Antonenko, N V; Jolos, R V; Scheid, W

    2010-01-01

    The negative parity bands in $^{220}$Th are analyzed within the dinuclear system model which was previously used for describing the alternating-parity bands in deformed actinides. The model is based on the assumption that cluster type shapes are produced by the motion of nuclear system in the mass-asymmetry coordinate. To describe the reflection-asymmetric collective modes characterized by nonzero values of $K$, the intrinsic excitations of clusters are taken into account. The angular momentum dependence of the parity splitting and the staggering behavior of the $B(E1)/B(E2)$ ratios as functions of angular momentum are explained.

  9. Grid integration study of a wind farm in a 220 kV grid

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, E.; Alvarez-Ortega, C. [Energy to Quality, S.L., Madrid (Spain)

    2012-07-01

    An electrical feasibility study of a wind farm project in a 220 kV grid is presented. Present and future high voltage grid is studied. The comparison of the main electrical parameters between the electrical grid with and without the addition of a 120 MW wind farm is performed in order to demonstrate that the wind farm is performed in order to demonstrate that the wind farm has no negative effects over the transmission system. The obtained results allow concluding that the wind farm under study will not cause significant perturbations on the power grid. (orig.)

  10. Excited OH+, H2O+, and H3O+ in NGC 4418 and Arp 220

    Science.gov (United States)

    González-Alfonso, E.; Fischer, J.; Bruderer, S.; Müller, H. S. P.; Graciá-Carpio, J.; Sturm, E.; Lutz, D.; Poglitsch, A.; Feuchtgruber, H.; Veilleux, S.; Contursi, A.; Sternberg, A.; Hailey-Dunsheath, S.; Verma, A.; Christopher, N.; Davies, R.; Genzel, R.; Tacconi, L.

    2013-02-01

    We report on Herschel/PACS observations of absorption lines of OH+, H2O+ and H3O+ in NGC 4418 and Arp 220. Excited lines of OH+ and H2O+ with Elower of at least 285 and ~200 K, respectively, are detected in both sources, indicating radiative pumping and location in the high radiation density environment of the nuclear regions. Abundance ratios OH+/H2O+ of 1-2.5 are estimated in the nuclei of both sources. The inferred OH+ column and abundance relative to H nuclei are (0.5-1) × 1016 cm-2 and ~ 2 × 10-8, respectively. Additionally, in Arp 220, an extended low excitation component around the nuclear region is found to have OH+/H2O+ ~ 5-10. H3O+ is detected in both sources with N(H3O+) ~ (0.5-2) × 1016 cm-2, and in Arp 220 the pure inversion, metastable lines indicate a high rotational temperature of ~500 K, indicative of formation pumping and/or hot gas. Simple chemical models favor an ionization sequence dominated by H+ → O+ → OH+ → H2O+ → H3O+, and we also argue that the H+ production is most likely dominated by X-ray/cosmic ray ionization. The full set of observations and models leads us to propose that the molecular ions arise in a relatively low density (≳104 cm-3) interclump medium, in which case the ionization rate per H nucleus (including secondary ionizations) is ζ > 10-13 s-1, a lower limit that is several × 102 times the highest current rate estimates for Galactic regions. In Arp 220, our lower limit for ζ is compatible with estimates for the cosmic ray energy density inferred previously from the supernova rate and synchrotron radio emission, and also with the expected ionization rate produced by X-rays. In NGC 4418, we argue that X-ray ionization due to an active galactic nucleus is responsible for the molecular ion production. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

  11. 220 kV露天变电站的噪声污染及其控制简析%Analysis of Noise Pollution and Control of 220 kV Outdoor Transformer Substations

    Institute of Scientific and Technical Information of China (English)

    陈锦栋; 李明

    2013-01-01

    Based on the noise data of several multiple 220kV outdoor substations, the major noise sources, noise intensity, frequency characteristics, propagation characteristics and noise pollution situation of the substations were described. According to the noise sources and noise transmission routes, the noise control measures were briefly analyzed. Examples were given to clarify the actual noise reduction effect of various noise reduction measures. This work can be used as a reference for similar engineering projects.%城市220 kV露天变电站的噪声污染比较严重,有必要进行分析和噪声治理。基于多个220 kV露天变电站的噪声实测数据,阐述220 kV露天变电站的主要噪声源、噪声源的声压、频率特性、传播影响特性以及对周边环境的污染情况,从声源、噪声传播途径简要分析了220 kV露天变电站的噪声控制措施,并以实例加以说明,阐述各种降噪措施的实际降噪效果,可供同类工程参考。

  12. 3C 220.3: a radio galaxy lensing a submillimeter galaxy

    CERN Document Server

    Haas, Martin; Barthel, Peter; Wilkes, Belinda J; Vegetti, Simona; Bussmann, R Shane; Willner, S P; Westhues, Christian; Ashby, Matthew L N; Chini, Rolf; Clements, David L; Fassnacht, Christopher D; Horesh, Assaf; Klaas, Ulrich; Koopmans, Leon V E; Kuraszkiewicz, Joanna; Lagattuta, David J; Meisenheimer, Klaus; Stern, Daniel; Wylezalek, Dominika

    2014-01-01

    Herschel Space Observatory photometry and extensive multiwavelength followup have revealed that the powerful radio galaxy 3C 220.3 at z=0.685 acts as a gravitational lens for a background submillimeter galaxy (SMG) at z=2.221. At an observed wavelength of 1mm, the SMG is lensed into three distinct images. In the observed near infrared, these images are connected by an arc of 1.8" radius forming an Einstein half-ring centered near the radio galaxy. In visible light, only the arc is apparent. 3C 220.3 is the only known instance of strong galaxy-scale lensing by a powerful radio galaxy not located in a galaxy cluster and therefore it offers the potential to probe the dark matter content of the radio galaxy host. Lens modeling rejects a single lens, but two lenses centered on the radio galaxy host A and a companion B, separated by 1.5", provide a fit consistent with all data and reveal faint candidates for the predicted fourth and fifth images. The model does not require an extended common dark matter halo, consi...

  13. A Rn-220 source for the calibration of low-background experiments

    CERN Document Server

    Lang, Rafael F; Brown, Ethan; Cervantes, Mayra; Macmullin, Sean; Masson, Darryl; Schreiner, Jochen; Simgen, Hardy

    2016-01-01

    We characterize two 40 kBq sources of electrodeposited Th-228 for use in low-background experiments. The sources efficiently emanate Rn-220, a noble gas that can diffuse in a detector volume. Rn-220 and its daughter isotopes produce alpha, beta, and gamma-radiation, which may used to calibrate a variety of detector responses and features, before decaying completely in only a few days. We perform various tests to place limits on the release of other long-lived isotopes. In particular, we find an emanation of <0.008 atoms/min/kBq (90% CL) for Th-228 and 1.53 atoms/min/kBq for Ra-224. The sources lend themselves in particular to the calibration of detectors employing liquid noble elements such as argon and xenon. With the source mounted in a noble gas system, we demonstrate that filters are highly efficient in reducing the activity of these longer-lived isotopes further. We thus confirm the suitability of these sources even for use in next-generation experiments, such as XENON1T/XENONnT, LZ, and nEXO.

  14. VLA H53alpha radio recombination line observations of the ultraluminous infrared galaxy Arp~220

    CERN Document Server

    Rodriguez-Rico, C A; Viallefond, F; Zhao, J H; Gómez, Y; Anantharamaiah, K R

    2005-01-01

    We present high angular resolution (0.7'') observations made with the Very Large Array (VLA) of the radio recombination line (RRL) H53alpha and radio continuum emission at 43 GHz from the ultraluminous infrared galaxy (ULIRG) Arp 220. The 43 GHz continuum emission shows a compact structure (~2'') with two peaks separated by ~1'', the East (E) and West (W) components, that correspond to each galactic nucleus of the merger. The spectral indices for both the E and W components, using radio continuum images at 8.3 and 43 GHz are typical of synchrotron emission (alpha ~ -1.0). Our 43 GHz continuum and H53alpha line observations confirm the flux densities predicted by the models proposed by Anantharamaiah et al. This agreement with the models implies the presence of high-density (~ 100,000 cm^-3) compact HII regions (~ 0.1 pc) in Arp~220. The integrated H53alpha line emission is stronger toward the non-thermal radio continuum peaks, which are also coincident with the peaks of molecular emission of the H2CO. The coi...

  15. Laser driven single shock compression of fluid deuterium from 45 to 220 GPa

    Energy Technology Data Exchange (ETDEWEB)

    Hicks, D; Boehly, T; Celliers, P; Eggert, J; Moon, S; Meyerhofer, D; Collins, G

    2008-03-23

    The compression {eta} of liquid deuterium between 45 and 220 GPa under laser-driven shock loading has been measured using impedance matching to an aluminum (Al) standard. An Al impedance match model derived from a best fit to absolute Hugoniot data has been used to quantify and minimize the systematic errors caused by uncertainties in the high-pressure Al equation of state. In deuterium below 100 GPa results show that {eta} {approx_equal} 4.2, in agreement with previous impedance match data from magnetically-driven flyer and convergent-explosive shock wave experiments; between 100 and 220 GPa {eta} reaches a maximum of {approx}5.0, less than the 6-fold compression observed on the earliest laser-shock experiments but greater than expected from simple extrapolations of lower pressure data. Previous laser-driven double-shock results are found to be in good agreement with these single-shock measurements over the entire range under study. Both sets of laser-shock data indicate that deuterium undergoes an abrupt increase in compression at around 110 GPa.

  16. Chemically Distinct Nuclei and Outflowing Shocked Molecular Gas in Arp 220

    CERN Document Server

    Tunnard, R; Garcia-Burillo, S; Carpio, J Graciá; Fischer, J; Fuente, A; González-Alfonso, E; Hailey-Dunsheath, S; Neri, R; Sturm, E; Usero, A; Planesas, P

    2014-01-01

    We present the results of interferometric spectral line observations of Arp 220 at 3.5mm and 1.2mm from the Plateau de Bure Interferometer (PdBI), imaging the two nuclear disks in H$^{13}$CN$(1 - 0)$ and $(3 - 2)$, H$^{13}$CO$^+(1 - 0)$ and $(3 - 2)$, and HN$^{13}$C$(3 - 2)$ as well as SiO$(2 - 1)$ and $(6 - 5)$, HC$^{15}$N$(3 - 2)$, and SO$(6_6 - 5_5)$. The gas traced by SiO$(6 - 5)$ has a complex and extended kinematic signature including a prominent P Cygni profile, almost identical to previous observations of HCO$^+(3 - 2)$. Spatial offsets $0.1''$ north and south of the continuum centre in the emission and absorption of the SiO$(6 - 5)$ P Cygni profile in the western nucleus (WN) imply a bipolar outflow, delineating the northern and southern edges of its disk and suggesting a disk radius of $\\sim40$ pc, consistent with that found by ALMA observations of Arp 220. We address the blending of SiO$(6 - 5)$ and H$^{13}$CO$^+(3 - 2)$ by considering two limiting cases with regards to the H$^{13}$CO$^+$ emission ...

  17. Static and dynamic analysis of 1 220 mm steel last stage blade for steam turbine

    Directory of Open Access Journals (Sweden)

    Kubín Z.

    2009-06-01

    Full Text Available The 3 000 rpm 1 220 mm blade for a steam turbine was developed with application of new design features. The last stage moving blade is designed with an integral cover, a mid-span tie-boss connection and a fir-tree dovetail. With this configuration the blades are continuously coupled by the blade untwist due to the centrifugal force when the blades rotate at high speed, so that vibration control and increased structural damping are provided. Blade was tuned in order to eigen-frequencies were safely far from possible excitation. Because of connection members, the number of the resonant vibration modes can be reduced by virtue of the vibration characteristics of the circumferentially continuous blades. The last stage airfoil was optimalized from view of minimalization of its centrifugal force. In order to develop the 3 000 rpm 1 220 mm blade, the advanced analysis methods to predict dynamics behavior of the bladed structure were applied. Coupled rotor-blade analysis was also aim of the attention. To validate calculated results the verification measurement such as rotational vibration tests was carried out in the high-speed test rig. Relation of the friction damping of the bladed structure on amount of excitation level was also monitored and evaluated.

  18. Cosmic Rays, Gamma-Rays, & Neutrinos in the Starburst Nuclei of Arp 220

    CERN Document Server

    Yoast-Hull, Tova M; Zweibel, Ellen G

    2015-01-01

    The cores of Arp 220, the closest ultra-luminous infrared starburst galaxy, provide an opportunity to study interactions of cosmic rays under extreme conditions. In this paper, we model the populations of cosmic rays produced by supernovae in the central molecular zones of both starburst nuclei. We find that ~65 - 100% of cosmic rays are absorbed in these regions due to their huge molecular gas contents, and thus, the nuclei of Arp 220 nearly complete proton calorimeters. As the cosmic ray protons collide with the interstellar medium, they produce secondary electrons that are also contained within the system and radiate synchrotron emission. Using results from chi-squared tests between the model and the observed radio spectral energy distribution, we predict the emergent gamma-ray and high-energy neutrino spectra and find the magnetic field to be at milligauss levels. Because of the extremely intense far-infrared radiation fields, the gamma-ray spectrum steepens significantly at TeV energies due to gamma-gamm...

  19. 220例住院糖尿病患者死因分析%Death causes of diabetic inpatients: an analysis of 220 cases

    Institute of Scientific and Technical Information of China (English)

    王淼; 邹大进

    2006-01-01

    目的:分析长海医院14年全院住院糖尿病患者的死因及特点.方法:根据1991~2004年长海医院住院死亡糖尿病患者的资料进行纵向分析、死亡构成特点分析.结果:1991~2004年长海医院糖尿病患者死亡220例,占总死亡例数的4.73%;主要死因依次为肿瘤27.27%、心血管疾病17.3%和脑血管疾病9.1%.其中代谢综合征(MS)患者和非MS患者年龄无统计学差异,但前者病程显著长于后者(P<0.01).结论:长海医院14年住院死亡患者糖尿病患病率显著低于上海市平均水平,糖尿病患者应早期、定时筛查防治肿瘤及MS.

  20. GeneFiex IN与TCu220C IUD宫内节育器避孕效果比较

    Institute of Scientific and Technical Information of China (English)

    林淑清

    2006-01-01

    目的 比较GeneFiex IN IUD(吉妮致美IUD)和TCu220C IUD的临床使用效果.方法 选择自愿放置IUD的已婚育龄妇女600例,随机分成两组(各300例),分别放置吉妮致美IUD和TCu220C IUD,并进行24个月随访观察.结果 吉妮致美IUD的脱落率显著低于TCu220C IUD (P<0.05),妊娠率、因症取出率及终止率,吉妮致美IUD与TCu220C IUD比较,有显著性差异(P<0.05).结论 吉妮致美IUD的避孕效果优于TCu220C IUD,可在临床上推广使用.

  1. 220kV分级绝缘变压器中性点保护配置探讨%On the Neutral Point Protection Configuration of 220 kV Graded Insulation Transformers

    Institute of Scientific and Technical Information of China (English)

    张霖; 杨超

    2011-01-01

    To choose a proper neutral point protection for 220 kV graded insulated transformer, the paper analyzes the protection configuration of arrester and discharge gap for the neutral point of 220 kV graded insulated transformer. According to the situation of Guizhou Power Grid, in which its 220 kV un-earthed transformer of neutral point grounding system adoptes coordinated protection by metal oxide arrester (MOA) and protective gap, the paper calculates the protection gap of the transformer's neutral point, takes weather factor into consideration, and concludes that a maximum protection gap should be selected to prevent frequent operation, and meets the over-voltage protection requirements.%为选择220kV分级绝缘变压器中性点保护方式,对220kV分级绝缘变压器中性点避雷器和放电间隙的保护配置作了分析探讨.根据贵阳电网220kV中性点接地系统不接地变压器采用了氧化锌避雷器(MOA)和保护间隙配合方式,推算变压器中性点保护间隙,并将气象因素纳入计算过程,认为应尽量按最大保护间隙距离进行选取,以防止保护间隙过于频繁动作,同时可满足过电压保护的要求.

  2. 广西石山区110~220 KV送电线路工程设计%Project Designs of 110-220 kV Transmission Lines in Guangxi Rocky Mountain Regions

    Institute of Scientific and Technical Information of China (English)

    江楚

    2008-01-01

    广西电力系统的骨干网络为110-220kV线路,回路众多,总投资额巨大.文章针对存在众多共性的广西石山区110~220kV线路总结出一套技术可靠、经济合理的设计理念,对节省电网建设投资、增强电网安全经济运行、提高设计质量具有一定的借鉴作用.

  3. 220/380V交流系统短路电流计算和配电线路保护%Short-circuit Current Calculation And the Distribution Line Protection on the 220/380V Exchange System

    Institute of Scientific and Technical Information of China (English)

    黄美霞

    2011-01-01

    文章通过案例进行TN系统、TT系统短路电流计算和数据分析,探讨220/380V配电线路的保护设置、保护电器参数整定和配电线路的热稳定校验。%Through the case of TN system、TT system short-circuit current calculation and data analysis,the article discusses the distribution circuitry of 220/380V protection setting、protect electrical distribution circuit parameter setting and thermal stability of

  4. Technical Renovation of the Electrical Control System of B220A Double Housing Planer%B220A型龙门刨床电气控制系统技术改造

    Institute of Scientific and Technical Information of China (English)

    孙当民

    2014-01-01

    本文介绍了B220A型龙门刨床电气系统的改造方案和系统组成,并对其电气控制系统改造前后的效果进行了比较,成效显著。%This paper introduces the reform scheme and system composition of B220A double housing planer electric system. The effects before and after the reform are compared, showing that the results are good.

  5. 放置吉妮致美IUD与Tcu 220c IUD的临床效果观察

    Institute of Scientific and Technical Information of China (English)

    任玉洁

    2010-01-01

    目的 比较吉妮致美IUD与Tcu220c IUD的临床使用效果.方法 选择自愿放置新型IUD的已婚育龄妇女442例,随机分为两组,分别放置吉妮致美IUD和Tcu220c IUD,并进行12个月随访观察.结果 吉妮致美IuD组带器妊娠率、脱落率,因症取出率,终止使用率均低于Tcu220C组,两者比较差异有统计学意义(P<0.05).结论 吉妮致美IUD是安全、高效、不良反应低的新型IUD,更具有可接受性.

  6. Effects of air conditioning, dehumidification and natural ventilation on indoor concentrations of {sup 222}Rn and {sup 220}Rn

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Thomas K.C.; Yu, K.N. E-mail: peter.yu@cityu.edu.hk

    2000-01-01

    A bedroom was selected for detailed measurements on {sup 220}Rn and {sup 222}Rn concentrations and environmental parameters including CO{sub 2} concentration, temperature and relative humidity. To simulate different sealing conditions, five conditions were artificially created in the sampling period of 25 consecutive days. It was concluded that natural ventilation is the most efficient way to lower the {sup 222}Rn levels, while air conditioning is the next. Dehumidification provides only a marginal reduction of {sup 222}Rn levels. The {sup 220}Rn concentrations are not affected by natural ventilation, air conditioner or dehumidification, and were all around 10 Bq m{sup -3}. There are no significant correlations between the {sup 220}Rn and {sup 222}Rn concentrations and environmental conditions such as CO{sub 2} concentrations, temperature, relative humidity and pressure.

  7. Dose ratio of 222Rn to 220Rn progeny in a pit using in-suit HPGe γ spectrometry

    International Nuclear Information System (INIS)

    To probe potential α energy concentration (PAEC) ratio and dose ratio of 222Rn to 220Rn progeny in a pit, in-situ HPGe γ spectrometry was used under atmospheric ventilation and without atmospheric ventilation conditions. The measurement data was analysed using relative efficiency method and PAEC method. The measurement results show that the average PAEC ratio and dose ratio of 222Rn to 220Rn progeny under without atmospheric ventilation is 3.6 and 10.8, respectively, which is 1.2 and 3.6 in first 8 hours under atmospheric ventilation. After 14 hours atmospheric ventilation, PAEC ratio and dose ratio are 0.2 and 0.6 stably. In-situ HPGe γ spectrometry has a great space in 222Rn and 220Rn dose research in the future. (authors)

  8. Effect of shell structure on neutron multiplicity of fissioning systems 220,222,224Th nuclei

    Directory of Open Access Journals (Sweden)

    Goyal Savi

    2015-01-01

    Full Text Available The pre- and post-scission neutron multiplicities have been extracted for the 220,222,224Th nuclei for the excitation energy range of 40 MeV to 64 MeV using the National Array of Neutron Detectors (NAND. The Th isotopes are populated from the fusion reaction of 16O+204,206,208Pb systems in order to investigate the dynamics of fusion-fission reactions using the neutron multiplicity as a probe. The theoretical calculations were performed using the Bohr-Wheeler fission width as well as the dissipative dynamical fission width from Kramers prescription. It is observed that the Bohr-Wheeler fission width underestimates the pre-scission yields to a large extent. A large amount of dissipation is required in the Kramers width to fit the observed pre-scission neutron multiplicities.

  9. Genes in a 220-kb region spanning the TNF cluster in human MHC

    Energy Technology Data Exchange (ETDEWEB)

    Nalabolu, S.R.; Nallur, G.; Weissman, S.M. [Yale Univ. School of Medicine, New Haven, CT (United States)] [and others

    1996-01-15

    A search for new genes was performed in a 220-kb region around the tumor necrosis factor gene cluster in the human central major histocompatibility complex region using a cDNA hybridization and selection method. In addition to the seven known genes in this region, we identified a new gene that is preferentially expressed in spleen. We also identified two pseudogenes that have high degrees of homology to cytokeratin and cyclophillin, respectively. Expressed sequences for a human homologue of the mouse B144 gene were also found in the current analysis. RT-PCR analysis showed that B144 is expressed in spleen, in thymus, and prominently in the macrophage cell line, U937. We also independently identified the BAT1 gene to be the well-conserved homologue of a previously described rat liver nuclear protein. 53 refs., 6 figs., 1 tab.

  10. 'Cold' crystallization in nanostructurized 80GeSe2-20Ga2Se3 glass.

    Science.gov (United States)

    Klym, Halyna; Ingram, Adam; Shpotyuk, Oleh; Calvez, Laurent; Petracovschi, Elena; Kulyk, Bohdan; Serkiz, Roman; Szatanik, Roman

    2015-01-01

    'Cold' crystallization in 80GeSe2-20Ga2Se3 chalcogenide glass nanostructurized due to thermal annealing at 380°C for 10, 25, 50, 80, and 100 h are probed with X-ray diffraction, atomic force, and scanning electron microscopy, as well as positron annihilation spectroscopy performed in positron annihilation lifetime and Doppler broadening of annihilation line modes. It is shown that changes in defect-related component in the fit of experimental positron lifetime spectra for nanocrystallized glasses testify in favor of structural fragmentation of larger free-volume entities into smaller ones. Nanocrystallites of Ga2Se3 and/or GeGa4Se8 phases and prevalent GeSe2 phase extracted mainly at the surface of thermally treated samples with preceding nucleation and void agglomeration in the initial stage of annealing are characteristic features of cold crystallization. PMID:25852346

  11. 'Cold' crystallization in nanostructurized 80GeSe2-20Ga2Se3 glass.

    Science.gov (United States)

    Klym, Halyna; Ingram, Adam; Shpotyuk, Oleh; Calvez, Laurent; Petracovschi, Elena; Kulyk, Bohdan; Serkiz, Roman; Szatanik, Roman

    2015-01-01

    'Cold' crystallization in 80GeSe2-20Ga2Se3 chalcogenide glass nanostructurized due to thermal annealing at 380°C for 10, 25, 50, 80, and 100 h are probed with X-ray diffraction, atomic force, and scanning electron microscopy, as well as positron annihilation spectroscopy performed in positron annihilation lifetime and Doppler broadening of annihilation line modes. It is shown that changes in defect-related component in the fit of experimental positron lifetime spectra for nanocrystallized glasses testify in favor of structural fragmentation of larger free-volume entities into smaller ones. Nanocrystallites of Ga2Se3 and/or GeGa4Se8 phases and prevalent GeSe2 phase extracted mainly at the surface of thermally treated samples with preceding nucleation and void agglomeration in the initial stage of annealing are characteristic features of cold crystallization.

  12. A 2-20 GHz Analog Lag-Correlator for Radio Interferometry

    CERN Document Server

    Holler, C M; Taylor, A C; Harris, A I; Maas, S A

    2011-01-01

    We present the design and testing of a 2-20 GHz continuum band analog lag correlator with 16 frequency channels for astronomical interferometry. The correlator has been designed for future use with a prototype single-baseline interferometer operating at 185-275 GHz. The design uses a broadband Wilkinson divider tree with integral thin-film resistors implemented on an alumina substrate, and custom-made broadband InGaP/GaAs Gilbert Cell multipliers. The prototype correlator has been fully bench-tested, together with the necessary readout electronics for acquisition of the output signals. The results of these measurements show that the response of the correlator is well behaved over the band. An investigation of the noise behaviour also shows that the signal-to-noise of the system is not limited by the correlator performance.

  13. MOA-2013-BLG-220Lb: Massive planetary companion to galactic-disk host

    International Nuclear Information System (INIS)

    We report the discovery of MOA-2013-BLG-220Lb, which has a super-Jupiter mass ratio q = 3.01 ± 0.02 × 10–3 relative to its host. The proper motion, μ = 12.5 ± 1 mas yr–1, is one of the highest for microlensing planets yet discovered, implying that it will be possible to separately resolve the host within ∼7 yr. Two separate lines of evidence imply that the planet and host are in the Galactic disk. The planet could have been detected and characterized purely with follow-up data, which has important implications for microlensing surveys, both current and into the Large Synoptic Survey Telescope (LSST) era.

  14. 3 220例丙型肝炎检测报告的分析

    Institute of Scientific and Technical Information of China (English)

    王淑艳

    2007-01-01

    @@ 1 材料与方法 1.1 对象:从2005年7月10日到2006年7月10日,在我院门诊和住院部就诊的3 220例丙型肝炎检测者,对其检测报告进行综合分析. 1.2 方法和试剂:①试剂来源:上海实业科华生物技术有限公司生产的HCV抗体诊断试剂盒.②仪器:KHB ST-360酶标仪.③检测方法:ELA法检测丙型肝炎抗体.

  15. Reaction cross sections for protons in the energy range 220-570 MeV

    CERN Document Server

    Renberg, P U; Measday, D F; Pepin, M; Serre, Claude; Schwaller, P

    1972-01-01

    Proton reaction cross sections have been measured for targets of natural isotopic abundance of the following elements and compounds: He, Be, C, Al, Fe, Cu, Ge, Sn, Pb, H/sub 2/O, B/sub 4/C and NaI. Data for proton energies between 220 and 570 MeV have been obtained with two types of transmission-counter assembly. The total errors are of the order of +or-3%. A slight increase of the reaction cross sections with energy is observed for most of the elements studied. The results interpreted in terms of the semi-classical theory of reaction cross section as function of energy clearly demonstrate the onset of pion- production above 250 MeV. (32 refs).

  16. Multiple reflection-asymmetric-type band structures in {sup 220}Th and dinuclear model

    Energy Technology Data Exchange (ETDEWEB)

    Shneidman, T.M.; Adamian, G.G.; Antonenko, N.V.; Jolos, R.V. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Scheid, W. [Institut fuer Theoretische Physik der Justus-Liebig-Universitaet, Giessen (Germany)

    2011-03-15

    The negative-parity bands with different values of K in {sup 220}Th are analysed within the dinuclear system model which was previously used for describing the ground-state alternating-parity bands with K = 0 in deformed actinides. The model is based on the assumption that the cluster type shapes are produced by the collective motion in the mass-asymmetry coordinate. To describe the reflection-asymmetric collective modes characterized by the nonzero values of K, the intrinsic excitations of clusters are taken into account. The observed excitation spectrum, angular-momentum dependence of the parity splitting and the staggering behaviour of the B(E1)/B(E2) ratios are explained. (orig.)

  17. Solar irradiance models and measurements: a comparison in the 220 nm to 240 nm wavelength band

    CERN Document Server

    Unruh, Yvonne C; Krivova, Natalie A

    2011-01-01

    Solar irradiance models that assume solar irradiance variations to be due to changes in the solar surface magnetic flux have been successfully used to reconstruct total solar irradiance on rotational as well as cyclical and secular time scales. Modelling spectral solar irradiance is not yet as advanced, and also suffers from a lack of comparison data, in particular on solar-cycle time scales. Here we compare solar irradiance in the 220 nm to 240 nm band as modelled with SATIRE-S and measured by different instruments on the UARS and SORCE satellites. We find good agreement between the model and measurements on rotational time scales. The long-term trends, however, show significant differences. Both SORCE instruments, in particular, show a much steeper gradient over the decaying part of cycle 23 than the modelled irradiance or that measured by UARS/SUSIM.

  18. P-Cygni Profiles of Molecular Lines toward Arp 220 Nuclei

    CERN Document Server

    Sakamoto, Kazushi; Wilner, David J; Black, John H; Conway, John E; Costagliola, Francesco; Peck, Alison B; Spaans, Marco; Wang, Junzhi; Wiedner, Martina C

    2009-01-01

    We report ~100 pc (0.3") resolution observations of (sub)millimeter HCO+ and CO lines in the ultraluminous infrared galaxy Arp 220. The lines peak at two merger nuclei, with HCO+ being more spatially concentrated than CO. Asymmetric line profiles with blueshifted absorption and redshifted emission are discovered in HCO+(3-2) and (4-3) toward the two nuclei and in CO(3-2) toward one nucleus. We suggest that these P-Cygni profiles are due to ~100 km/s outward motion of molecular gas from the nuclei. This gas is most likely outflowing from the inner regions of the two nuclear disks rotating around individual nuclei, clearing the shroud around the luminosity sources there.

  19. HST/WFC3 Observations of an Off-Nuclear Superbubble in Arp 220

    CERN Document Server

    Lockhart, Kelly E; Lu, Jessica R; Allen, Mark G; Rupke, David; Calzetti, Daniela; Davies, Richard I; Dopita, Michael A; Engel, Hauke; Heckman, Timothy M; Leitherer, Claus; Sanders, David B

    2015-01-01

    We present a high spatial resolution optical and infrared study of the circumnuclear region in Arp 220, a late-stage galaxy merger. Narrowband imaging using HST/WFC3 has resolved the previously observed peak in H$\\alpha$+[NII] emission into a bubble-shaped feature. This feature measures 1.6" in diameter, or 600 pc, and is only 1" northwest of the western nucleus. The bubble is aligned with the western nucleus and the large-scale outflow axis seen in X-rays. We explore several possibilities for the bubble origin, including a jet or outflow from a hidden active galactic nucleus (AGN), outflows from high levels of star formation within the few hundred pc nuclear gas disk, or an ultraluminous X-ray source. An obscured AGN or high levels of star formation within the inner $\\sim$100 pc of the nuclei are favored based on the alignment of the bubble and energetics arguments.

  20. QUIET-TIME INTERPLANETARY {approx}2-20 keV SUPERHALO ELECTRONS AT SOLAR MINIMUM

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Linghua [Department of Geophysics, Peking University, 100871 Beijing (China); Lin, Robert P.; Salem, Chadi; Pulupa, Marc; Larson, Davin E.; Luhmann, Janet G. [Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450 (United States); Yoon, Peter H., E-mail: wanglhwang@gmail.com [School of Space Research, Kyung Hee University, Yongin, Gyeonggi (Korea, Republic of)

    2012-07-01

    We present a statistical survey of {approx}2-20 keV superhalo electrons in the solar wind measured by the SupraThermal Electron instrument on board the two STEREO spacecraft during quiet-time periods from 2007 March through 2009 March at solar minimum. The observed superhalo electrons have a nearly isotropic angular distribution and a power-law spectrum, f{proportional_to}v{sup -{gamma}}, with {gamma} ranging from 5 to 8.7, with nearly half between 6.5 and 7.5, and an average index of 6.69 {+-} 0.90. The observed power-law spectrum varies significantly on a spatial scale of {approx}>0.1 AU and a temporal scale of {approx}>several days. The integrated density of quiet-time superhalo electrons at 2-20 keV ranges from {approx}10{sup -8} cm{sup -3} to 10{sup -6} cm{sup -3}, about 10{sup -9}-10{sup -6} of the solar wind density, and, as well as the power-law spectrum, shows no correlation with solar wind proton density, velocity, or temperature. The density of superhalo electrons appears to show a solar-cycle variation at solar minimum, while the power-law spectral index {gamma} has no solar-cycle variation. These quiet-time superhalo electrons are present even in the absence of any solar activity-e.g., active regions, flares or microflares, type III radio bursts, etc.-suggesting that they may be accelerated by processes such as resonant wave-particle interactions in the interplanetary medium, or possibly by nonthermal processes related to the acceleration of the solar wind such as nanoflares, or by acceleration at the CIR forward shocks.

  1. Non-conventional Indoor GIS Layout Design of 220kV Distribution Equipment in Guangzhou Xintang Power Plant%广州新塘电厂220 kV屋内GIS非常规布置的设计

    Institute of Scientific and Technical Information of China (English)

    唐柳燕

    2014-01-01

    ∶针对广州新塘电厂2×330MW机组工程厂区布置的特殊性及局限性,文章详细分析论述了220kV配电装置采用屋内GIS型式非常规布置的设计过程及其特点,提出合适的布置方案,解决了220kV配电装置占地及出线问题,为类似工程提供借鉴。%The design and the characteristics of the non-conventional indoor GIS layout of 220kV distribution equip-ment were discussed and analyzed in the paper based on the particularity and limitation of plant layout of Guangzhou Xintang power plant, and a reasonable layout was proposed which solves the land occupation and outgoing line prob-lems of the 220kV distribution equipment and can be well referenced by similar projects.

  2. Observation on the Effect of Placement of Active γ Intrauterine Device and TCu220C IUD%放置活性γ型IUD与TCu220C IUD临床观察

    Institute of Scientific and Technical Information of China (English)

    刘润兰

    2007-01-01

    目的:观察活性γ型宫内节育器(IUD)与TCu220C IUD的临床避孕效果.方法:选择2002年8月~2005年8月间1 100例放置活性γ型IUD和TCu220C IUD的育龄妇女,随机分为两组,每组各550例,于置器后6、12、24个月进行对比性观察.结果:活性γ型IUD 24个月的脱落率、妊娠率、因症取出率明显低于TCu220C IUD,有显著性差异(P<0.05);活性γ型IUD 24个月的累积续用率高于TCu220C IUD,有非常显著性差异(P<0.01).结论:活性γ型IUD脱落率低、不良反应少、续用率高,值得临床推广应用.

  3. 一种新型的220 kV HGIS配电装置探讨%Discussion of a New-type 220 kV HGIS Electrical Switchgear Arrangement

    Institute of Scientific and Technical Information of China (English)

    彭花娜; 林荫

    2015-01-01

    This paper mainly introduces a new-type 220kV HGIS electrical switchgear arrangement, which adopts innovative all-joint framework with single steel pipe column in homeland, strives to decorate after optimized rational, area saving, investment saving, not only satisfies the producing safety, maintains convenient requirement, but also reflects the smart substation 220kV electrical switchgear arrangement switchgears technical direction.%本文介绍一种新型的220 kV Hypid气体绝缘开关设备(Hypid Gas Insulated Switchgear,HGIS)配电装置,采用全联合单管柱构架,为国内首创,力求优化后布置清晰合理、占地节约、投资节省,既满足生产安全、检修维护方便的要求,又能体现目前智能变电站220 kV配电装置布置的技术方向。

  4. Yingtan Hi-tech Zone 220,000 t/a Copper Product Processing Project Finished AgreementSigning

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    The day March 27 witnessed the agreement signing ceremony of 220,000 t/a copper product processing project between Yingtan Hi-tech Zone and Shenghua Group.As a top 500 enterprise in China’s manufacture industry,Shenghua Group is one of the biggest manufacturers in China’s wire and cable

  5. 42 CFR 413.220 - Methodology for calculating the per-treatment base rate under the ESRD prospective payment system...

    Science.gov (United States)

    2010-10-01

    ... Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES MEDICARE... Disease (ESRD) Services and Organ Procurement Costs § 413.220 Methodology for calculating the per... factor to account for the most recent estimate of increases in the prices of an appropriate market...

  6. Identification of three gp350/220 regions involved in Epstein-Barr virus invasion of host cells.

    Science.gov (United States)

    Urquiza, Mauricio; Lopez, Ramses; Patiño, Helena; Rosas, Jaiver E; Patarroyo, Manuel E

    2005-10-21

    Epstein-Barr virus (EBV) invasion of B-lymphocytes involves EBV gp350/220 binding to B-lymphocyte CR2. The anti-gp350 monoclonal antibody (mAb)-72A1 Fab inhibits this binding and therefore blocks EBV invasion of target cells. However, gp350/220 regions interacting with mAb 72A1 and involved in EBV invasion of target cells have not yet been identified. This work reports three gp350/220 regions, defined by peptide 11382, 11389, and 11416 sequences, that are involved in EBV binding to B-lymphocytes. Peptides 11382, 11389, and 11416 bound to CR2(+) but not to CR2(-) cells, inhibited EBV invasion of cord blood lymphocytes (CBLs), were recognized by mAb 72A1, and inhibited mAb 72A1 binding to EBV. Peptides 11382 and 11416 binding to peripheral blood lymphocytes (PBLs) induced interleukin-6 protein synthesis in these cells, this phenomenon being inhibited by mAb 72A1. The same behavior has been reported for gp350/220 binding to PBLs. Anti-peptide 11382, 11389, and 11416 antibodies inhibited EBV binding and EBV invasion of PBLs and CBLs. Peptide 11382, 11389, and 11416 sequences presented homology with the C3dg regions coming into contact with CR2 (C3dg and gp350 bound to similar CR2 regions). These peptides could be used in designing strategies against EBV infection. PMID:16087675

  7. 20 CFR 220.39 - Disability determination for a surviving divorced spouse or remarried widow(er).

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Disability determination for a surviving... Regulations of the Social Security Administration § 220.39 Disability determination for a surviving divorced spouse or remarried widow(er). A surviving divorced spouse or a remarried widow(er) must be...

  8. Excitation Potentials and Shell Corrections for the Elements Z2=20 to Z2=30

    DEFF Research Database (Denmark)

    Andersen, H.H.; Sørensen, H.; Vadja, P.

    1969-01-01

    Excitation potentials and shell corrections for the elements Z 2=20 to Z2=30 are evaluated from experimental stopping-power data for 5-12-MeV protons and deuterons. Use is made of Walske's K- and L-shell corrections and shell corrections calculated by Bonderup (1967) on the basis of the Thomas...

  9. Upper limits on the VHE $\\gamma$-ray flux from the ULIRG Arp 220 and other galaxies with VERITAS

    CERN Document Server

    Fleischhack, Henrike

    2015-01-01

    The cores of ultra-luminous infrared galaxies (ULIRGs) are very dense environments, with a high rate of star formation and supernova explosions. They are thought to be sites of cosmic-ray acceleration, and are predicted to emit $\\gamma$-rays in the GeV to TeV range. So far, no ULIRG has been detected in $\\gamma$-rays. Arp 220, the closest ULIRG to Earth, has been well studied, and detailed models of $\\gamma$-ray production in this galaxy are available. They predict a rather hard $\\gamma$-ray spectrum up to several TeV. Due to its large rate of star formation, high gas density, and its close proximity to Earth, Arp 220 is thought to be a very good candidate for observations in very-high-energy (VHE; 100 GeV - 100 TeV) $\\gamma$-rays. Arp 220 was observed by the VERITAS telescopes for more than 30 hours with no significant excess over the cosmic-ray background. The upper limits on the VHE $\\gamma$-ray flux of Arp 220 derived from these observations are the most sensitive limits presented so far and are starting ...

  10. FIRST OBSERVATION IN THE SOUTH OF TITAN'S FAR-INFRARED 220 cm{sup -1} CLOUD

    Energy Technology Data Exchange (ETDEWEB)

    Jennings, Donald E.; Anderson, C. M.; Samuelson, R. E.; Flasar, F. M.; Nixon, C. A.; Bjoraker, G. L.; Romani, P. N.; Achterberg, R. K.; Cottini, V.; Hesman, B. E.; Kunde, V. G.; Carlson, R. C. [Goddard Space Flight Center, Greenbelt, MD 20771 (United States); De Kok, R. [SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht (Netherlands); Coustenis, A.; Vinatier, S.; Bampasidis, G. [LESIA, Observatoire de Paris-Meudon, 92195 Meudon Cedex (France); Teanby, N. A. [School of Earth Sciences, University of Bristol, Bristol BS8 1RJ (United Kingdom); Calcutt, S. B., E-mail: donald.e.jennings@nasa.gov [Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)

    2012-12-10

    An emission feature at 220 cm{sup -1} which has been attributed to a cloud of condensed material in Titan's winter stratosphere has been seen for the first time in the south. This feature had previously been found only at high northern latitudes during northern winter and spring. The material emitting at 220 cm{sup -1}, as yet unidentified, may be volatiles associated with nitrile gases that accumulate in the absence of ultraviolet sunlight. Not detected as recently as 2012 February, the 220 cm{sup -1} feature clearly appeared at the south pole in Cassini spectra recorded on 2012 July 24, indicating a rapid onset of the emission. This is the first indication of the winter buildup of condensation in the southern stratosphere that has been expected as the south pole moves deeper into shadow. In the north the 220 cm{sup -1} feature continued to decrease in intensity with a half-life of 3 years.

  11. 31 CFR 20.220 - By when must I publish my drug-free workplace statement and establish my drug-free awareness...

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false By when must I publish my drug-free workplace statement and establish my drug-free awareness program? 20.220 Section 20.220 Money and Finance: Treasury Office of the Secretary of the Treasury GOVERNMENTWIDE REQUIREMENTS FOR DRUG-FREE...

  12. 20 CFR 664.220 - Is there an exception to permit youth who are not low-income individuals to receive youth services?

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Is there an exception to permit youth who are not low-income individuals to receive youth services? 664.220 Section 664.220 Employees' Benefits EMPLOYMENT AND TRAINING ADMINISTRATION, DEPARTMENT OF LABOR YOUTH ACTIVITIES UNDER TITLE I OF THE...

  13. Diverse IgG serum response to novel glycopeptide epitopes detected within immunodominant stretches of Epstein-Barr virus glycoprotein 350/220

    DEFF Research Database (Denmark)

    D'Arrigo, Isotta; Cló, Emiliano; Bergström, Tomas;

    2013-01-01

    -linked glycans, most of which essential for EBV life cycle. EBV gp350/220 is also a primary target for neutralizing antibodies in the human hosts and a promising candidate for an EBV vaccine. Here we showed that recombinant GalNAc transferases can glycosylate scan peptides of the EBV gp350/220 envelope protein...

  14. 42 CFR 484.220 - Calculation of the adjusted national prospective 60-day episode payment rate for case-mix and...

    Science.gov (United States)

    2010-10-01

    ...-day episode payment rate for case-mix and area wage levels. 484.220 Section 484.220 Public Health... Calculation of the adjusted national prospective 60-day episode payment rate for case-mix and area wage levels... case-mix using a case-mix index to explain the relative resource utilization of different patients....

  15. 12 CFR 250.220 - Whether member bank acting as trustee is prohibited by section 20 of the Banking Act of 1933 from...

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Whether member bank acting as trustee is prohibited by section 20 of the Banking Act of 1933 from acquiring majority of shares of mutual fund. 250.220 Section 250.220 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE...

  16. In situ soil 222Rn and 220Rn and their relationship with meteorological parameters in tropical Northern Peninsular Malaysia

    International Nuclear Information System (INIS)

    This study focused on the relationship between soil 222Rn and 220Rn concentrations and meteorological parameters (temperature, pressure, humidity, and terrestrial gamma radiation) in Northern Peninsular Malaysia. Measurements of in situ soil 222Rn and 220Rn concentrations were performed in surface air and at a sampling depth of 50 cm using two active techniques: RAD7 radon detector and radon continuous monitor (Sun Nuclear Corporation). The surface air 222Rn concentration ranged from 6 Bq m−3 to 79 Bq m−3, whereas at the depth of 50 cm, the 222Rn and 220Rn concentrations varied from 133 Bq m−3 to 143,059 Bq m−3 and from 55 Bq m−3 to 403 Bq m−3, respectively. The gamma dose rate (DR) in air was measured using a GR-135 spectrometer (Exploranium). The dose rate varied from 80 nGy h−1 to 258 nGy h−1. The 222Rn concentration in the soil (143 kBq m−3) was high considering that the concentration in typical soil samples is only 40 kBq m−3. The 222Rn concentration in surface air varied within the recommended activity values prescribed by the United States Environmental Protection Agency and the International Commission on Radiological Protection. Weak positive and negative correlations were observed between the (222Rn and 220Rn) concentrations and the meteorological parameters. - Highlights: • DR varies (80–258 nGy h−1), no correlation between acidity and radon concentration. • 222Rn in soil (143 kBq m−3) high considering than in typical soil 40 kBq m−3. • 222Rn in surface air varied within EPA and ICRP. • All sites exhibited larger DR compared with the world of 84 nGy h−1 except for two sites. • A statistically significant correlation between 222Rns–220Rn

  17. Harnessing Fluorine-Sulfur Contacts and Multipolar Interactions for the Design of p53 Mutant Y220C Rescue Drugs.

    Science.gov (United States)

    Bauer, Matthias R; Jones, Rhiannon N; Baud, Matthias G J; Wilcken, Rainer; Boeckler, Frank M; Fersht, Alan R; Joerger, Andreas C; Spencer, John

    2016-08-19

    Many oncogenic mutants of the tumor suppressor p53 are conformationally unstable, including the frequently occurring Y220C mutant. We have previously developed several small-molecule stabilizers of this mutant. One of these molecules, PhiKan083, 1-(9-ethyl-9H-carbazole-3-yl)-N-methylmethanamine, binds to a mutation-induced surface crevice with a KD = 150 μM, thereby increasing the melting temperature of the protein and slowing its rate of aggregation. Incorporation of fluorine atoms into small molecule ligands can substantially improve binding affinity to their protein targets. We have, therefore, harnessed fluorine-protein interactions to improve the affinity of this ligand. Step-wise introduction of fluorines at the carbazole ethyl anchor, which is deeply buried within the binding site in the Y220C-PhiKan083 complex, led to a 5-fold increase in affinity for a 2,2,2-trifluoroethyl anchor (ligand efficiency of 0.3 kcal mol(-1) atom(-1)). High-resolution crystal structures of the Y220C-ligand complexes combined with quantum chemical calculations revealed favorable interactions of the fluorines with protein backbone carbonyl groups (Leu145 and Trp146) and the sulfur of Cys220 at the mutation site. Affinity gains were, however, only achieved upon trifluorination, despite favorable interactions of the mono- and difluorinated anchors with the binding pocket, indicating a trade-off between energetically favorable protein-fluorine interactions and increased desolvation penalties. Taken together, the optimized carbazole scaffold provides a promising starting point for the development of high-affinity ligands to reactivate the tumor suppressor function of the p53 mutant Y220C in cancer cells. PMID:27267810

  18. Measurements of {sup 222}Rn and{sup 220}Rn with a large size collector of radon progeny

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Qifan; Cheng, Jianping; Liu, Guilin; Zhu, Li [Tsinghua Univ., Beijing (China); Ja, Wenyi; Fang, Fang [Chengdu Univ. of Technology, Chengdu (China)

    2002-07-01

    People have paid more attention to radon since 1980s. Radon concentrations in high background radiation areas in the south are higher than others in China, especially {sup 220} Rn concentration is significantly high. Therefore, measurement of {sup 222} Rn and {sup 220} Rn concentration should be carried out there. I will introduce a large size collector of radon progeny and its applications in this paper. The collector is a sheet of polyvinyl chloride fibre with electrostatics of -500V {approx} -700V. Its size (60mm in diameter) is larger than others (26mm in diameter) that work as the same principle. The collector is more effective to adsorb radon progeny than most of others. The equipment of ZnS(Ag) Scintillation Counting System is available for large size collectors to detect radon progeny. Therefore its sensitivity of measurement is high than others. According to the different half life of radon progeny and based on both theory and experiment, a formula for discrimination and calculation of {sup 222} Rn and {sup 220} Rn concentrations was deduced. The {sup 222} Rn and {sup 220} Rn concentrations were surveyed with electrostatic collectors of radon progeny on the campus of commercial school and some other areas in Hainan, southern China. Neither {sup 222} Rn nor {sup 220} Rn concentrations were found significant high. However several faults underground were delineated. The collector is also used to study radon transportation. Results indicate that radon changes regularly with date when it has transported for a certain distance. Velocities of radon migration in the four media are quite different. Radon migrates more quickly in vertical tube than in the horizontal tube.

  19. GyneFix IN与TCu220C宫内节育器临床使用效果随访1年观察

    Institute of Scientific and Technical Information of China (English)

    王兆明

    2009-01-01

    目的:比较吉妮固定式宫内节育器(IUD)和TCu220C IUD临床使用效果.方法:选择自愿放置IUD的已婚育龄妇女422例,随机分成2组,分别放置吉妮(IUD)和TCu220C IUD,并进行12个月随访观察.结果:吉妮IUD的脱落率显著低于TCu220C IUD(P<0.01),因症取出率及终止率,吉妮IUD与TCu220C IUD比较,有显著性差异(P<0.05).结论:吉妮IUD是避孕效果优于TCu220C IUD,可在临床上推广使用.

  20. AMMONIA AS A TEMPERATURE TRACER IN THE ULTRALUMINOUS GALAXY MERGER Arp 220

    Energy Technology Data Exchange (ETDEWEB)

    Ott, Juergen [National Radio Astronomy Observatory, P.O. Box O, 1003 Lopezville Road, Socorro, NM 87801 (United States); Henkel, Christian; Weiss, Axel [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, 53121 Bonn (Germany); Braatz, James A., E-mail: jott@nrao.edu, E-mail: chenkel@mpifr-bonn.mpg.de, E-mail: aweiss@mpifr-bonn.mpg.de, E-mail: jbraatz@nrao.edu [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States)

    2011-12-01

    We present Australia Telescope Compact Array (ATCA) and Robert C. Byrd Green Bank Telescope (GBT) observations of ammonia (NH{sub 3}) and the 1.2 cm radio continuum toward the ultraluminous infrared galaxy merger Arp 220. We detect the NH{sub 3}(1,1), (2,2), (3,3), (4,4), (5,5), and (6,6) inversion lines in absorption against the unresolved, (62 {+-} 9) mJy continuum source at 1.2 cm. The peak apparent optical depths of the ammonia lines range from {approx}0.05 to 0.18. The absorption lines are well described by single-component Gaussians with central velocities in between the velocities of the eastern and western cores of Arp 220. Therefore, the ammonia likely traces gas that encompasses both cores. The absorption depth of the NH{sub 3}(1,1) line is significantly shallower than expected based on the depths of the other transitions. The shallow (1,1) profile may be caused by contamination from emission by a hypothetical, cold ({approx}< 20 K) gas layer with an estimated column density of {approx}< 2 Multiplication-Sign 10{sup 14} cm{sup -2}. This layer would have to be located behind or away from the radio continuum sources to produce the contaminating emission. The widths of the ammonia absorption lines are {approx}120-430 km s{sup -1}, in agreement with those of other molecular tracers. We cannot confirm the extremely large line widths of up to {approx}1800 km s{sup -1} previously reported for this galaxy. Using all of the ATCA detections except for the shallow (1,1) line, we determine a rotational temperature of (124 {+-} 19) K, corresponding to a kinetic temperature of T{sub kin} = (186 {+-} 55) K. Ammonia column densities depend on the excitation temperature. For excitation temperatures of 10 K and 50 K, we estimate N(NH{sub 3}) = (1.7 {+-} 0.1) Multiplication-Sign 10{sup 16} cm{sup -2} and (8.4 {+-} 0.5) Multiplication-Sign 10{sup 16} cm{sup -2}, respectively. The relation scales linearly for possible higher excitation temperatures. Our observations are

  1. 3C 220.3: A radio galaxy lensing a submillimeter galaxy

    Energy Technology Data Exchange (ETDEWEB)

    Haas, Martin; Westhues, Christian; Chini, Rolf [Astronomisches Institut, Ruhr Universität, Bochum (Germany); Leipski, Christian; Klaas, Ulrich; Meisenheimer, Klaus [Max-Planck-Institut für Astronomie, Heidelberg (Germany); Barthel, Peter; Koopmans, Léon V. E. [Kapteyn Astronomical Institute, University of Groningen (Netherlands); Wilkes, Belinda J.; Bussmann, R. Shane; Willner, S. P.; Ashby, Matthew L. N.; Kuraszkiewicz, Joanna [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Vegetti, Simona [Max-Planck-Institut für Astrophysik, Garching (Germany); Clements, David L. [Imperial College, London (United Kingdom); Fassnacht, Christopher D. [University of California, Davis, CA (United States); Horesh, Assaf [Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA (United States); Lagattuta, David J. [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn (Australia); Stern, Daniel; Wylezalek, Dominika, E-mail: haas@astro.rub.de [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA (United States)

    2014-07-20

    Herschel Space Observatory photometry and extensive multiwavelength follow-up have revealed that the powerful radio galaxy (PRG) 3C 220.3 at z = 0.685 acts as a gravitational lens for a background submillimeter galaxy (SMG) at z = 2.221. At an observed wavelength of 1 mm, the SMG is lensed into three distinct images. In the observed near infrared, these images are connected by an arc of ∼1''.8 radius forming an Einstein half-ring centered near the radio galaxy. In visible light, only the arc is apparent. 3C 220.3 is the only known instance of strong galaxy-scale lensing by a PRG not located in a galaxy cluster and therefore it offers the potential to probe the dark matter content of the radio galaxy host. Lens modeling rejects a single lens, but two lenses centered on the radio galaxy host A and a companion B, separated by 1''.5, provide a fit consistent with all data and reveal faint candidates for the predicted fourth and fifth images. The model does not require an extended common dark matter halo, consistent with the absence of extended bright X-ray emission on our Chandra image. The projected dark matter fractions within the Einstein radii of A (1''.02) and B (0''.61) are about 0.4 ± 0.3 and 0.55 ± 0.3. The mass to i-band light ratios of A and B, M/L{sub i}∼8±4 M{sub ⊙} L{sub ⊙}{sup −1}, appear comparable to those of radio-quiet lensing galaxies at the same redshift in the CfA-Arizona Space Telescope LEns Survey, Lenses Structure and Dynamics, and Strong Lenses in the Legacy Survey samples. The lensed SMG is extremely bright with observed f(250 μm) = 440 mJy owing to a magnification factor μ ∼ 10. The SMG spectrum shows luminous, narrow C IV λ1549 Å emission, revealing that the SMG houses a hidden quasar in addition to a violent starburst. Multicolor image reconstruction of the SMG indicates a bipolar morphology of the emitted ultraviolet (UV) light suggestive of cones through which UV light escapes a

  2. RELIABILITY ASSESSMENT OF TRANSMISSION TOWER OF 220 KV M/C “MA” VERTICAL MEMBERS

    Directory of Open Access Journals (Sweden)

    M.V.R.SATYANARAYANA

    2014-04-01

    Full Text Available Transmission line towers are used to support conductors carrying extra high voltage (EHV electric transmission lines and one or two ground wires at suitable distance. These also carry vary heavy currents, to the tune of several hundred amperes. This has necessitated the use of tall towers to support the transmission line conductors carrying EHV. The cost of transmission line tower is 30% to 40% of total cost of transmission line. The problem of efficiently designing structural system involves reliability constraints imposed at both serviceability and ultimate limit state. Methods are developed using structural reliability principle to evaluate time dependent reliability of structure. These methods enable the impact on safety and serviceability of uncertainties in loading conditions, structural degradation due to aggressive environment to be assessed qualitatively. The prediction of service life of damaged or deteriorated steel structures remains at the stage of parametric studies, inspite of intensive research on corrosion in steel structures for the past three decades. Service live of steel structures is limited by the susceptibility of the member to corrosion. Oxidation of iron leads to the formulation of various products (such as ferrous and ferric oxides, some of which occupy much greater volume than the original iron that gets consumed by the corrosion process. At this stage the member loses its ability to resist the forces. This project is a study on reliability assessment of 220 kV transmission towers. In this the 220 kV tower consists of 33.935 m height arranged in 12 height Panels and it contain 225 members. The wind load on tower for zone –II condition is calculated according to IS Code IS: 802 (part – 1/Section – 1: 1995. The tower is analyzed as space truss for full load condition using STAAD Pro 2007. In this work the variation of reliability index of members with decrease in area of cross section are studied. The compression

  3. Gestational Diabetes Mellitus: Maternal and Perinatal Outcomes in 220 Saudi Women 

    Directory of Open Access Journals (Sweden)

    Turki Gasim

    2012-03-01

    Full Text Available  Objectives: To assess the maternal and fetal complications of pregnancy in mothers with gestational diabetes mellitus (GDM compared with non-diabetic patients who delivered in the hospital during the study period.Methods: The outcome of pregnancy in 220 Saudi patients with GDM identified from the delivery register/hospital database and matched for age, parity and body mass index with 220 non-diabetic controls were studied retrospectively from their case files. Patients with multiple pregnancies and abnormal presentation of the fetus were excluded from the study.Results: The GDM patients were treated with either diet alone or with additional insulin in some patients who required better control of their blood sugar levels. Patients with GDM had a significantly higher incidence of pre-eclampsia (p<0.0001; preterm delivery (p=0.0226; induction of labor (p<0.0001; cesarean section (p=0.0019; higher mean birth weight (p<0.0001 of babies; large for gestational age infants (p=0.0011; macrosomia (p=0.0186; and admission to the neonatal intensive care unit (p=0.0003, compared with the control group. However, the rates of Apgarscore <7 at 5 minutes, respiratory distress syndrome, neonatal hypoglycemia, hyperbilirubinemia and the need for phototherapy were similar in both groups of patients. Congenital anomalies and perinatal mortality rates were not significantly different in the two groups.Conclusion: GDM is recognized to be associated with increased rates of adverse maternal and neonatal outcomes, which are supported by the findings of this study. Even the mild form of GDM seems to have significant consequences for women and their offspring and is recommended to be aggressively treated. Evidence suggests that early diagnosis and strict control of blood sugar levels throughout the pregnancy can significantly reduce maternal and fetal complications. A multicenter, randomized controlled trial, based on universally accepted criteria for GDM screening test

  4. CHEMICALLY DISTINCT NUCLEI AND OUTFLOWING SHOCKED MOLECULAR GAS IN Arp 220

    Energy Technology Data Exchange (ETDEWEB)

    Tunnard, R.; Greve, T. R. [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom); Garcia-Burillo, S.; Fuente, A.; Usero, A.; Planesas, P. [Observatorio Astronómico Nacional, Observatorio de Madrid, Alfonso XII, 3, E-28014 Madrid (Spain); Carpio, J. Graciá; Hailey-Dunsheath, S.; Sturm, E. [Max-Planck-Institute for Extraterrestrial Physics (MPE), Giessenbachstraße 1, D-85748 Garching (Germany); Fischer, J. [Naval Research Laboratory, Remote Sensing Division, 4555 Overlook Ave SW, Washington, DC 20375 (United States); González-Alfonso, E.; Neri, R., E-mail: richard.tunnard.13@ucl.ac.uk [Universidad de Alcalá de Henares, Departamento de Física y Matemáticas, Campus Universitario, E-28871 Alcalá de Henares, Madrid (Spain)

    2015-02-10

    We present the results of interferometric spectral line observations of Arp 220 at 3.5 mm and 1.2 mm from the Plateau de Bure Interferometer, imaging the two nuclear disks in H{sup 13}CN(1-0) and (3-2), H{sup 13}CO{sup +}(1-0) and (3-2), and HN{sup 13}C(3-2) as well as SiO(2-1) and (6-5), HC{sup 15}N(3-2), and SO(6{sub 6}-5{sub 5}). The gas traced by SiO(6-5) has a complex and extended kinematic signature including a prominent P Cygni profile, almost identical to previous observations of HCO{sup +}(3-2). Spatial offsets 0.''1 north and south of the continuum center in the emission and absorption of the SiO(6-5) P Cygni profile in the western nucleus (WN) imply a bipolar outflow, delineating the northern and southern edges of its disk and suggesting a disk radius of ∼40 pc, consistent with that found by ALMA observations of Arp 220. We address the blending of SiO(6-5) and H{sup 13}CO{sup +}(3-2) by considering two limiting cases with regards to the H{sup 13}CO{sup +} emission throughout our analysis. Large velocity gradient modeling is used to constrain the physical conditions of the gas and to infer abundance ratios in the two nuclei. Our most conservative lower limit on the [H{sup 13}CN]/[H{sup 13}CO{sup +}] abundance ratio is 11 in the WN, compared with 0.10 in the eastern nucleus (EN). Comparing these ratios to the literature we argue on chemical grounds for an energetically significant active galactic nucleus in the WN driving either X-ray or shock chemistry, and a dominant starburst in the EN.

  5. Improvement of failure protection for high voltage side circuit breaker of 220 kV transformer%220kV变压器高压侧断路器失灵保护的改进

    Institute of Scientific and Technical Information of China (English)

    郑春生

    2016-01-01

    Failure protection of Shengli Oilfield 220 kV substation main transformer circuit breaker, its typical configuration cannot effectively isolate the fault point, in some atypical failure,the main transformer for a long time by the impact of short-circuit current,seriously affect the power system stability and safety. The failure protection action nodes and mother difference protection action nodes and the corresponding non electric starter relay series, when startup failure protection, the corresponding node closed, start relay, to direct trip-ping of main transformer with three side of the switch. Using this improved scheme, 3 of Shengli Oilfield 220 kV substation main transformer failure protection has been improved, reduces the possibility of 220 kV Main Transformer be impact by the fault current, guarantee the safe and stable operation of power grids.%胜利油田220 kV变电站主变断路器失灵保护中的典型配置不能有效隔离故障点,在一些非典型故障中,会使主变长时间受到短路电流冲击,严重影响电力系统稳定性和安全性.为此,将失灵保护动作节点和母差保护动作节点与相应的非电量启动继电器串联,当失灵保护启动时,相应节点闭合,启动继电器,进而直接跳开主变三侧开关.应用此改进方案,对胜利油田3座220 kV变电站的主变失灵保护进行了完善,降低了220 kV主变压器受到故障电流冲击的可能性,保障了电网安全、稳定运行.

  6. A preliminary Investigation of 222Rn and 220Rn levels in non-uranium mines in China%我国非铀矿山222Rn和220Rn水平初步调查研究

    Institute of Scientific and Technical Information of China (English)

    尚兵; 崔宏星; 武云云; 张庆召; 苏旭

    2008-01-01

    Objective To measure levels of 222Rn and 220Rn in typical non-uranium mines, China, and to estimate dose from the occupational radon exposure in the miners. Methods Using typical sampling scheme,44 mines were selectcd in 12 provinces, which can be classified into 4 categories and 17 types of mines. The radon-thoron discriminative detectors were used to measure 222Rn and 220Rn concentrations in mines. Result The concentration of 222Rn or 220Rn was log-normally distributed. The arithmetic mean (AM) concentration and geometric mean (GM) concentration of 222Rn and 220Rn in 25 metal mines (n=147) were estimated to be (1211±2359) Bq/m3(AM) and (311±5.5) Bq/m3(GM), and (269±700) Bq/m3(AM) and (71±4.4)Bq/m3(GM), respectively. The mean concentrations of 222Rn and 220Rn in 18 non-metal mines (n=118) were (98±207) Bq/m3(AM) and(55±2.5) Bq/m3(GM), and (60±76) Bq/m3(AM) and (38±2.4)Bq/m3(GM),respectively. In total, we measured 222 Rn concentration in 44 underground mines, 6 of them, accounted for 15%, with the mean radon concentration exceeding 1000 Bqm-3 (limit of workplace in China). Approximately 7% of radon concentration in mines measured were higher than 3700 Bq/m3(current limit in uranium mine in China), some points even exceeded 10 000 Bq/m3. Based on this typical measurements, the equilibrium factor for 222Rn was estimated to be 0.33±0.15 in underground mines and 0.47±0.18 in nearby houses. Equilibrium factor for 222Rn ranged from 0.001 to 0.032. Using the data obtained in this typical survey, the average annual effective dose of underground miners exposed to radon and thoron was estimated to be 8.15 mSv/a. Conclusions High levels of 222Rn exists in metal mines, such as copper, tin, lead and zinc, gold, and aluminum mines among others. More study and administrative measures are needed to address the radiation protection of workers occupationally exposed to high radon in mines.%目的 测量非铀矿山222Rn、220Rn水平,了解我国矿山氡超标比

  7. The Submillimeter Array 1.3 mm line survey of Arp 220

    CERN Document Server

    Martin, S; Martin-Pintado, J; Aalto, S; Zhao, J -H; Peck, A B; Petitpas, G R; Greve, T; Monje, R; Greve, T R; An, T

    2010-01-01

    We present the first aperture synthesis unbiased spectral line survey toward an extragalactic object. The survey covered the 40 GHz frequency range between 202 and 242 GHz of the 1.3 mm atmospheric window. We find that 80% of the observed band shows molecular emission, with 73 features identified from 15 molecular species and 6 isotopologues. The 13C isotopic substitutions of HC3N and transitions from H2(18)O, 29SiO, and CH2CO are detected for the first time outside the Galaxy. Within the broad observed band, we estimate that 28% of the total measured flux is due to the molecular line contribution, with CO only contributing 9% to the overall flux. We present maps of the CO emission at a resolution of 2.9"x1.9" which, though not enough to resolve the two nuclei, recover all the single-dish flux. The 40 GHz spectral scan has been modelled assuming LTE conditions and abundances are derived for all identified species. The chemical composition of Arp 220 shows no clear evidence of an AGN impact on the molecular em...

  8. Ammonia as a Temperature Tracer in the Ultraluminous Galaxy Merger Arp220

    CERN Document Server

    Ott, Juergen; Braatz, James A; Weiss, Axel

    2011-01-01

    (abridged) We present ATCA and GBT observations of ammonia (NH3) toward the ultraluminous infrared galaxy (ULIRG) merger Arp220. We detect the NH3 (1,1), (2,2), (3,3), (4,4), (5,5), and (6,6) inversion lines in absorption against the unresolved, (62+/-9)mJy continuum source at 1.2cm. The peak apparent optical depths of the NH3 lines range from ~0.05 to 0.18. The absorption depth of the NH3 (1,1) line is significantly shallower than expected based on the depths of the other transitions, which might be caused by contamination from emission by a hypothetical, cold (<~20K) gas layer with an estimated column density of <~ 2x10^14 cm^-2. The widths of the NH3 absorption lines are ~120-430 km s^-1, in agreement with those of other molecular tracers. We cannot confirm the extremely large linewidths of up to ~1800km s^-1 previously reported. We determine a rotational temperature of (124+/-19)K, corresponding to a kinetic temperature of T_kin=(186+/-55)K. NH3 column densities depend on the excitation temperature....

  9. The merger Seyfert galaxy Arp 220. Line and continuum absorption and emission

    CERN Document Server

    Contini, M

    2012-01-01

    The line and continuum spectra of the merger galaxy Arp 220 are analysed with the aim of investigating the ionizing and heating sources. We refer to radio, optical, infrared and X-ray spectra. The results show that in agreement with other merger galaxies, the optical lines are emitted from gas photoionised by the AGN and heated by the shocks in the extended NLR. The infrared lines are better explained by the emission from gas close to the starburst. The starburst dominates the infrared emission. [OI] and [CI] lines in the far-infrared are formed in the internal region of extended clouds and are therefore absorbed, while [CII] lines are emitted from the external edges of outflowing clouds. The O/H relative abundances are about solar and N/H are higher than solar by a factor of 1.5, throughout the starburst region, while in the AGN extended NLR the O/H ratio is half solar. A relatively high dust-to-gas ratio is indicated by modelling the dust reprocessed radiation peak consistently with bremsstrahlung emitted f...

  10. Southern California Edison (SCE) 220 kWe Pressurized SOFC Power System

    Energy Technology Data Exchange (ETDEWEB)

    Vora, Shailesh D. [Siemens Westinghouse Power Corporation Science and Technology Center, 1310 Beulah Road, Pittsburgh, PA 15235 (United States)

    2000-07-01

    Siemens Westinghouse has designed, built, and factory tested a 220 kWe integrated power generation system consisting of a pressurized solid oxide fuel cell (PSOFC) module and a micro-turbine generator (MTG). This proof-of concept project is the world's first hybrid PSOFC/MTG power system. The system completed its Factory Acceptance Test (FAT) on April 7, 2000 at the Siemens Westinghouse facility in Pittsburgh, Pennsylvania. The system will be installed at the National Fuel Cell Research Center at the University of California, Irvine. This proof-of-concept test is scheduled to begin in May, 2000. This system is sponsored by Edison International and the California Energy Commission. The MTG was fabricated by Ingersoll-Rand Energy Systems, Portsmouth, New Hampshire. Development of the tubular solid oxide fuel cell technology by the Siemens Westinghouse Power Corporation is sponsored by the U.S. Department of Energy, National Energy Technology Laboratory. In this paper the attributes of this system are described as well as the results of the FAT, and the path to commercialization of Siemens Westinghouse SOFC power systems. (author)

  11. Direct measurement of attachment of {sup 220}Rn progeny on aerosols by atomic force microscopy

    Energy Technology Data Exchange (ETDEWEB)

    Leung, J.K.C. E-mail: jkcleung@hku.hk; Tso, M.Y.W.; Lam, J.H.C.; Zhau, Q.F

    2003-08-11

    Atomic force microscopy (AFM) is becoming a powerful tool for the study of nuclear tracks in materials such as CR-39. Coupled with its capability of observing near nm aerosol particles, we have utilized the AFM to observe the radon progeny-loaded aerosol particles deposited on surfaces of CR-39 and to observe the corresponding etch pits produced by the {alpha}-particles emitted from the radon progenies. A special platform was built so that after the aerosol particles on the CR-39 have been scanned and recorded, the CR-39 can be etched and then scanned for the etch pits at the same location. Both {sup 222}Rn and {sup 220}Rn progenies were used in the study. The progenies were generated by the appropriate radon sources and mixed with aerosol particles generated by aerosol generators. The aerosol size distributions were analyzed by a scanning mobility particle sizer. Some of the limitations and difficulties of the technique will be described. The results enable us to examine the attachment process including multiple attachments of radon progenies on aerosols.

  12. Studies on the electrical characteristics of thoron ({sup 220}Rn) progeny

    Energy Technology Data Exchange (ETDEWEB)

    Maniyan, C.G.; Louiz, J.; Pillai, P.M.B.; Khan, A.H

    2003-07-01

    Electrical characteristics of thoron ({sup 220}Rn) progeny under various low ampere (<1 mA) DC voltages applied to a calibration facility (CF) has been studied. About 30 y old thorium hydroxide was used as the source for the generation of thoron and its decay products. The study has revealed that under a low ventilation rate (about 1 air change per hour) and at high equilibrium equivalent concentration (EER) of thoron, above 275 Bq m{sup -3} (>1 WL), a considerable fraction of {sup 212}Pb nuclides are negatively charged. It was also concluded that {sup 212}Pb has lesser charge (per ion) than {sup 212}Bi and is more susceptible to an electric field. There is a linear relationship between the activity collected and the voltage applied and the activity collected is proportional to the area of the collecting surface. Under the experimental conditions, when a voltage of {+-}2500 V is simultaneously applied, the activity concentration can be reduced by a factor of 100. (author)

  13. Reliability analysis for the 220 kV Libyan high voltage communication system

    Energy Technology Data Exchange (ETDEWEB)

    Saleh, O.S.A.; AlAthram, A.Y. [General Electric Company of Libya (Libyan Arab Jamahiriya). Development Dept.

    2007-07-01

    Electric utilities are expanding their networks to include fiber-optic communications, which offer high capacity with reliable performance at low cost. Fiber-optic networks offer a feasible technical solution for leasing excess capacity. They can be readily deployed under a wide range of network configurations and can be upgraded rapidly. This study evaluated the reliability index for the communication network of Libya's 220 kV high voltage subsystem operated by the General Electric Company of Libya (GECOL). The schematic diagrams of the communication networks were presented for both power line carriers and fiber optics networks. A reliability analysis for the two communication networks was performed through the existing communication equipment. The reliability values revealed that the fiber optics system has several advantages such as a large bandwidth for high quality data transmission; immunity to electromagnetic interference; low attenuation which allows for extended cable transmission; ability to be used in dangerous environments; a higher degree of security; and, a high capacity through existing conduits due to its light weight and small diameter. However, it was noted that although fiber optic communications may be more reliable and provide the clearest signal, the powerline communication (PLC) system has more redundancy, particularly in the case of outdoor components where the PLC has more power line to carry the signals, while the fiber optic communications depend only on the earthing wire of the high voltage transmission line. 4 refs., 8 tabs., 6 figs.

  14. High-Resolution Radio Continuum Measurements of the Nuclear Disks of Arp 220

    CERN Document Server

    Barcos-Muñoz, Loreto; Evans, Aaron S; Privon, George C; Armus, Lee; Condon, Jim; Mazzarella, Joseph M; Meier, David S; Momjian, Emmanuel; Murphy, Eric J; Ott, Juerguen; Reichardt, Ashely; Sakamoto, Kazushi; Sanders, David B; Schinnerer, Eva; Stierwalt, Sabrina; Surace, Jason A; Thompson, Todd A; Walter, Fabian

    2014-01-01

    We present new Karl G. Jansky Very Large Array radio continuum images of the nuclei of Arp 220, the nearest ultra-luminous infrared galaxy. These images have both the angular resolution to study detailed morphologies of the two nuclei that power the system and sensitivity to a wide range of spatial scales. At 33 GHz, and with a resolution of 0".081 x 0".063 (29.9 x 23.3 pc), we resolve the emission surrounding both nuclei and conclude that is mostly synchrotron in nature. The spatial distributions of radio emission in both nuclei are well described by exponential profiles. These have deconvolved half-light radii of 51 and 35 pc for the eastern and western nuclei, and they match the number density profile of radio supernovae observed with very long baseline interferometry. This similarity might be due to the fast cooling of cosmic rays electrons caused by the presence of a strong (~ mG) magnetic field in this system. We estimate high luminosity surface densities of $\\mathrm{\\Sigma_{IR} \\sim 4.2^{+1.6}_{-0.7} \\...

  15. Evaluation of transmission methodology and attenuation correction for the microPET Focus 220 animal scanner

    Energy Technology Data Exchange (ETDEWEB)

    Lehnert, Wencke [School of Medical Radiation Sciences, Faculty of Health Sciences, University of Sydney, PO Box 170, Lidcombe NSW 1825 (Australia); Meikle, Steven R [School of Medical Radiation Sciences, Faculty of Health Sciences, University of Sydney, PO Box 170, Lidcombe NSW 1825 (Australia); Siegel, Stefan [Siemens Preclinical Solutions, 810 Innovation Drive, Knoxville, TN 37932 (United States); Newport, Danny [Siemens Preclinical Solutions, 810 Innovation Drive, Knoxville, TN 37932 (United States); Banati, Richard B [School of Medical Radiation Sciences, Faculty of Health Sciences, University of Sydney, PO Box 170, Lidcombe NSW 1825 (Australia); Rosenfeld, Anatoly B [Centre for Medical Radiation Physics, University of Wollongong, Wollongong NSW 2522 (Australia)

    2006-08-21

    An accurate, low noise estimate of photon attenuation in the subject is required for quantitative microPET studies of molecular tracer distributions in vivo. In this work, several transmission-based measurement techniques were compared, including coincidence mode with and without rod windowing, singles mode with two different energy sources ({sup 68}Ge and {sup 57}Co), and postinjection transmission scanning. In addition, the effectiveness of transmission segmentation and the propagation of transmission bias and noise into the emission images were examined. The {sup 57}Co singles measurements provided the most accurate attenuation coefficients and superior signal-to-noise ratio, while {sup 68}Ge singles measurements were degraded due to scattering from the object. Scatter correction of {sup 68}Ge transmission data improved the accuracy for a 10 cm phantom but over-corrected for a mouse phantom. {sup 57}Co scanning also resulted in low bias and noise in postinjection transmission scans for emission activities up to 20 MBq. Segmentation worked most reliably for transmission data acquired with {sup 57}Co but the minor improvement in accuracy of attenuation coefficients and signal-to-noise may not justify its use, particularly for small subjects. We conclude that {sup 57}Co singles transmission scanning is the most suitable method for measured attenuation correction on the microPET Focus 220 animal scanner.

  16. Poly β-hydroxybutyrate production by Bacillus subtilis NG220 using sugar industry waste water.

    Science.gov (United States)

    Singh, Gulab; Kumari, Anish; Mittal, Arpana; Yadav, Anita; Aggarwal, Neeraj K

    2013-01-01

    The production of poly β-hydroxybutyrate (PHB) by Bacillus subtilis NG220 was observed utilizing the sugar industry waste water supplemented with various carbon and nitrogen sources. At a growth rate of 0.14 g h(-1) L(-1), using sugar industry waste water was supplemented with maltose (1% w/v) and ammonium sulphate (1% w/v); the isolate produced 5.297 g/L of poly β-hydroxybutyrate accumulating 51.8% (w/w) of biomass. The chemical nature of the polymer was confirmed with nuclear magnetic resonance, Fourier transform infrared, and GC-MS spectroscopy whereas thermal properties were monitored with differential scanning calorimetry. In biodegradability study, when PHB film of the polymer (made by traditional solvent casting technique) was subjected to degradation in various natural habitats like soil, compost, and industrial sludge, it was completely degraded after 30 days in the compost having 25% (w/w) moisture. So, the present study gives insight into dual benefits of conversion of a waste material into value added product, PHB, and waste management.

  17. Surface-deposition and Distribution of the Radon (222Rn and 220Rn) Decay Products Indoors

    Science.gov (United States)

    Espinosa, G.; Tommasino, Luigi

    The exposure to radon (222Rn and 220Rn) decay products is of great concern both in dwellings and workplaces. The model to estimate the lung dose refers to the deposition mechanisms and particle sizes. Unfortunately, most of the dose data available are based on the measurement of radon concentration and the concentration of radon decay products. These combined measurements are widely used in spite of the fact that accurate dose assessments require information on the particle deposition mechanisms and the spatial distribution of radon decay products indoors. Most of the airborne particles and/or radon decay products are deposited onto indoor surfaces, which deposition makes the radon decay products unavailable for inhalation. These deposition processes, if properly known, could be successfully exploited to reduce the exposure to radon decay products. In spite of the importance of the surface deposition of the radon decay products, both for the correct evaluation of the dose and for reducing the exposure, little or no efforts have been made to investigate these deposition processes. Recently, two parallel investigations have been carried out in Rome and at Universidad Nacional Autónoma de México (UNAM) in Mexico City respectively, which address the issue of the surface-deposited radon decay products. Even though these investigations have been carried independently, they complement one another. It is with these considerations in mind that it was decided to report both investigations in the same paper.

  18. Fault Diagnosis Method of Benz W220 Tire Pressure Warning Control System%奔驰W220胎压报警控制系统故障诊断方法研究

    Institute of Scientific and Technical Information of China (English)

    吴君; 陈开考; 骆美富

    2011-01-01

    根据奔驰W220胎压报警控制系统的结构特点,分析了该系统的报警显示机理及胎压激活与操作方法,并结合胎压报警信息及STAR检测仪的检测数据,对该系统的故障进行了深入研究,为进行类似的汽车故障诊断提供了一种研究方法。%According to structure characteristic of Mercedes-Benz W220 tire pressure warning control system,the paper analyzes the system's alarming display mechanism,tire pressure activation and operation method.Combined tire pressure warning information with test data from STAR detector,the fault is deeply researched,and which can provide a study method for similar automobile trouble diagnosis.

  19. Analysis of 220kV Bus Voltage Secondary Circuit Parallel Reverse Charging%220kV母线电压二次回路并列反充电情况分析

    Institute of Scientific and Technical Information of China (English)

    费传学

    2012-01-01

    This article through the analysis of a substation 220kV II, III section of bus potential transform- er secondary parallel reverse charging anomaly, sums up the causes of potential transformer secondary re- verse charging, analyzes the effects of this situation on safety production, and puts forward the prevention measures.%本文通过对某变电站220kVⅡ、Ⅲ段母线压变二次并列反充电的异常情况进行分析,总结出压变二次反充电的原因,同时分析了压变发生二次反充电对安全生产的影响,并提出预控措施。

  20. EBZ-220型掘进机回油冷却器的改造设计%Retrofit Design of Oil Return Cooler in EBZ-220 Tunnel-Boring Machines

    Institute of Scientific and Technical Information of China (English)

    闫品

    2015-01-01

    Through the transformation design of the cooler of EBZ-220 type tunnel-boring machines, the cooling effect of the tunnel-boring machines is greatly improved, the efficiency of boring machine is increased, the failure rate of the tunnel-boring machines is reduced, longer service life is obtained.%通过对EBZ-220型掘进机冷却器的改造设计,大大改善了掘进机的冷却效果,提高了掘进机的使用效率,降低了掘进机故障率,使其效率更高,寿命更长。

  1. 220MW机组电动给水泵变频改造及节能分析%Frequency Conversion Transformation of Electric Feed Pump in 220 MW Unit and Analysis of Energy Saving

    Institute of Scientific and Technical Information of China (English)

    马洪波

    2014-01-01

    某热电公司220 MW汽轮机电动给水泵进行变频改造,通过对改造方案和改造前后的节能潜力进行分析,指出了变频改造的经济性.充分肯定220 MW汽轮机电动给水泵进行变频改造较高的经济效益.并进一步建议推广应用这一技术到300 MW和600 MW汽轮机组电动给水泵变频改造中.

  2. Theoretical analysis and realization of the GPS time synchronization system improvement in 220kV HaUong substation%220kV海龙变GPS对时系统改造理论分析与实现

    Institute of Scientific and Technical Information of China (English)

    安万

    2011-01-01

    结合220kV海龙变新安装的GPS对时装置,对全站综合自动化设备GPS对时系统改造进行了理论分析并最终得以实现。根据现状分析找出了全站GPS时钟失准的根本原因。%According to the new GPS time synchronization device in 220kV Hailong substation, the improvement of GPS time synchroni- zation system were analyzed theoretically for integrated automatic equipment in the total station, and ultimately was able to achieve. Based on the analysis of the present situation,the basic reason of inaccurate GPS clock for the total station found out.

  3. Clinic Effect of Active Yuangong IUD and TCu220C IUD%放置活性元宫IUD与TCu220C IUD 24个月临床效果观察

    Institute of Scientific and Technical Information of China (English)

    张伟; 田九玲; 张淑斌; 张娜

    2005-01-01

    目的:观察活性元宫IUD的临床效果.方法:对1 060例分别放置活性元宫IUD和TCu220CIUD的育龄妇女,进行24个月随访观察.结果:活性元宫IUD 24个月的脱落率、妊娠率、因症取出率及终止率明显低于TCu220C IUD,经检验有显著性差异(P<0.05).讨论:活性元宫IUD是避孕效果较理想的避孕措施.

  4. 220kV全户内变电站土建设计相关问题%Talking about issues relating to civil engineering design of integral 220 kV indoor substation

    Institute of Scientific and Technical Information of China (English)

    张龙骧; 邱新刚

    2012-01-01

    Based on partial civil engineering design of integral 220 kV Xinghua indoor substation, the paper puts forward problems relating to overall general layout, building structure design and professional coordination, and makes an exploration and analysis with a view to optimize overall engineering design scheme and to meet the utilization demands.%通过220 kV杏花全户内变电站土建部分设计,对其总平面布置、建筑结构设计、专业配合等方面提出相关问题,并进行探讨和分析,以优化整个工程的设计方案,满足使用要求。

  5. 220kV地下变电站环境影响及对策分析%Environmental Impact and Countermeasures Analysis for 220kV Underground Substation

    Institute of Scientific and Technical Information of China (English)

    邬振武

    2011-01-01

    The environmental impacts of 220 kV Jinan underground substation are discussed in the aspect of electromagnetic fields,noise pollution,and heat dissipation;some relevant countermeasures for reducing the environmental impact are explored,too.After analysis,it is shown that the environmental impact of Jinan substation is under the requirement of relevant national standards and regulations.%分析了某220 kV地下变电站在工频电磁场、噪声、散热量等方面对环境的影响,以及在设计中所采取的降低其影响的相关措施。通过分析认为,该变电站对于环境的影响完全符合国家和地区的相关法律和规范要求。

  6. OPGW型光缆从500kV转接至220 kV线路%Design and Discussion of OPGW from 500 kV Change 220 kV Power Line

    Institute of Scientific and Technical Information of China (English)

    霍凤田

    2006-01-01

    主要介绍了OPGW型光缆从500 kV线路转接至220 kV线路,设计需要考虑安全性能、绝缘要求和光缆的热容量等因素,通过计算OPGW在不同电压等级线路之间转接是可行的.

  7. 220kV氧化锌避雷器损坏事故教训及反措建议%Lessons and Suggestion of 220 kV Metal Oxide Surge Arresters Accident

    Institute of Scientific and Technical Information of China (English)

    黄松泉; 郭学文

    2002-01-01

    分析了郎家畈变电站220 kV氧化锌避雷器损坏事故发生的原因,指出了氧化锌避雷器在研制、生产过程中存在部分参数选择不当等方面的问题,提出了避免类似事故重复发生的改进措施.

  8. Discussion on celerity zone of 220 kV transmission line protection for sensitive zone%220 kV线路后备保护增加"灵敏快速段"的方案探讨

    Institute of Scientific and Technical Information of China (English)

    李本瑜

    2009-01-01

    纵联保护作为220 kV线路全线速动的主保护,在线路正常运行时肩负着不可替代的作用,但由于纵联保护必须依赖于通讯通道,在通道中断或者传输质量降低时,都将造成纵联保护被迫停运.在线路的两套纵联保护均退出运行的情况下,为了满足系统稳定的要求,必须缩短后备保护灵敏段的动作延时,总结2008年年初电网在遭受罕见的冰雪凝冻灾害天气考验期间,纵联保护通道暴露出的一些问题以及相应的处理经验,提出了线路后备保护增加"灵敏快速段"的方案.%Pilot protection is the master protection of 220kV transmission line,but the pilot protection has to depend on communicate channel,so when the communicate channel is break off,pilot protection has to be compelled. When the two pilot protections of 220kV transmission line protection are all resected,in order to satisfy power system stability,the back-up protection delay of time of transmission line must be shorten.This paper summarizes the experience that pilot protection channel suffered frozen weather in 2008 and brings forward the scheme of celecity zone of 220kV transmission line back-up protection.

  9. Butt Joint Technique of 220 kV GIS Made in Domestic and Imported in Dongdu Substation%东渡变电站国产与进口220 kV GIS的对接

    Institute of Scientific and Technical Information of China (English)

    林俊山

    2000-01-01

    介绍了厦门东渡变电站一期工程瑞士S&S公司生产的220 kV GIS设备与二期工程西安高压开关厂生产的GIS设备实现对接的具体措施;并就分期建设的GIS工程提出了应该考虑的问题.

  10. 220kV交流大截面海底电缆的设计选型%Typeselection of a Large Section AC 220 kV Submarine Cable

    Institute of Scientific and Technical Information of China (English)

    王贤灿; 官文彤

    2013-01-01

    以厦门电力进岛I通道第一回电缆改造工程为背景,通过对国内外海底电缆的应用、发展现状的调研和技术经济比较,提出了交流220 kV大截面海底电缆的设计选型建议.

  11. Research and Development of the Factory Joint inside Optical Fiber Composite Submarine Cable for Rated Voltage of 220 kV%含软接头的220 kV光纤复合海底电缆的研制

    Institute of Scientific and Technical Information of China (English)

    周厚强

    2012-01-01

    介绍了220 kV超高压光电复合海底电缆的设计制作过程,对导体、金属套、铠装保护层等进行了技术分析,并对试制过程中的关键技术以及软接头制作进行探讨.

  12. Distinction of [220] and [204] textures of Cu(In,Ga)Se2 film and their growth behaviors depending on substrate nature and Na incorporation

    International Nuclear Information System (INIS)

    For better understanding of the structural property of polycrystalline tetragonal Cu(In,Ga)Se2 (CIGS) thin films grown on soda-lime glass, it is necessary to characterize the [220]- and [204]-oriented textures clearly that are related to the different physical properties. However, the distinction between the [220]- and [204]-oriented textures is very difficult because of their nearly identical plane spacings and atomic arrangements. Using X-ray diffraction techniques of high resolution θ–2θ scanning and reciprocal space mapping, we distinguished the [220]- and [204]-oriented textures of CIGS films and observed that the behaviors of [220] and [204] textures independently depended on both substrate nature and Na presence. We report the Na- and substrate-related dependence of the physical properties of the CIGS film was attributed to the independent growth behaviors of the [220] and [204] textures in the CIGS. - Highlights: • We investigated [220]- and [204]-oriented textures of Cu(In,Ga)Se2 (CIGS) films. • X-ray diffraction methods distinguished two textures. • The growth behaviors were influenced by underlying substrate and Na. • The [220] and [204] textures in CIGS should be differentially observed

  13. Distinction of [220] and [204] textures of Cu(In,Ga)Se{sub 2} film and their growth behaviors depending on substrate nature and Na incorporation

    Energy Technology Data Exchange (ETDEWEB)

    Cho, Dae-Hyung, E-mail: dhcho@etri.re.kr [IT Components and Materials Industry Technology Research Department, Electronics and Telecommunications Research Institute (ETRI), 218 Gajeongno, Yuseong-gu, Daejeon 305-700 (Korea, Republic of); Kim, Jeha [Department of Solar & Energy Engineering, Cheongju University, 298 Daeseongro, Sangdang-gu, Cheongju, Chungbuk 360-764 (Korea, Republic of); Chung, Yong-Duck [IT Components and Materials Industry Technology Research Department, Electronics and Telecommunications Research Institute (ETRI), 218 Gajeongno, Yuseong-gu, Daejeon 305-700 (Korea, Republic of); Korea University of Science and Technology (UST), 217 Gajeongno, Yuseong-gu, Daejeon 305-350 (Korea, Republic of)

    2015-08-31

    For better understanding of the structural property of polycrystalline tetragonal Cu(In,Ga)Se{sub 2} (CIGS) thin films grown on soda-lime glass, it is necessary to characterize the [220]- and [204]-oriented textures clearly that are related to the different physical properties. However, the distinction between the [220]- and [204]-oriented textures is very difficult because of their nearly identical plane spacings and atomic arrangements. Using X-ray diffraction techniques of high resolution θ–2θ scanning and reciprocal space mapping, we distinguished the [220]- and [204]-oriented textures of CIGS films and observed that the behaviors of [220] and [204] textures independently depended on both substrate nature and Na presence. We report the Na- and substrate-related dependence of the physical properties of the CIGS film was attributed to the independent growth behaviors of the [220] and [204] textures in the CIGS. - Highlights: • We investigated [220]- and [204]-oriented textures of Cu(In,Ga)Se{sub 2} (CIGS) films. • X-ray diffraction methods distinguished two textures. • The growth behaviors were influenced by underlying substrate and Na. • The [220] and [204] textures in CIGS should be differentially observed.

  14. Do nuclei go pear-shaped? Coulomb excitation of 220Rn and 224Ra at REX-ISOLDE (CERN

    Directory of Open Access Journals (Sweden)

    Scheck M.

    2015-01-01

    Full Text Available The IS475 collaboration conducted Coulomb-excitation experiments with post-accelerated radioactive 220Rn and 224Ra beams at the REX-ISOLDE facility. The beam particles (Ebeam: 2.83 MeV/u were Coulomb excited using 60Ni, 114Cd, and 120Sn scattering targets. De-excitation γ-rays were detected employing the Miniball array and scattered particles were detected in a silicon detector. Exploiting the Coulomb-excitation code GOSIA for each nucleus several matrix elements could be obtained from the measured γ-ray yields. The extracted ‹3−||E3||0+› matrix element allows for the conclusion that, while 220Rn represents an octupole vibrational system, 224Ra has already substantial octupole correlations in its ground state. This finding has implications for the search of CP-violating Schiff moments in the atomic systems of the adjacent odd-mass nuclei.

  15. Precursory Subsurface 222Rn and 220Rn Degassing Signatures of the 2004 Seismic Crisis at Tenerife, Canary Islands

    Science.gov (United States)

    Pérez, Nemesio M.; Hernández, Pedro A.; Padrón, Eleazar; Melián, Gladys; Marrero, Rayco; Padilla, Germán; Barrancos, José; Nolasco, Dácil

    2007-12-01

    Precursory geochemical signatures of radon degassing in the subsurface of the Tenerife Island were observed several months prior to the recent 2004 seismic-volcanic crisis. These premonitory signatures were detected by means of a continuous monitoring of 222Rn and 220Rn activity from a bubbling CO2-rich gas spot located at 2.850 m depth inside a horizontal gallery for groundwater exploitation at Tenerife. Multivariate Regression Analysis (MRA) on time series of the radon activity was applied to eliminate the radon activity fluctuation due to external variables such as barometric pressure, temperature and relative humidity as well as power supply. Material Failure Forecast Method (FFM) was successfully applied to forecast the anomalous seismicity registered in Tenerife Island in 2004. The changes in the 222Rn/220Rn ratio observed after the period of anomalous seismicity might suggest a higher gas flow rate and/or changes in the vertical permeability induced by seismic activity.

  16. Superconductivity in GeH{sub 4}(H{sub 2}){sub 2} above 220 GPa high-pressure

    Energy Technology Data Exchange (ETDEWEB)

    Zhong Guohua, E-mail: gh.zhong@siat.ac.cn [Center for Photovoltaics and Solar Energy, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences and Chinese University of Hong Kong, Shenzhen 518055 (China); Zhang Chao [Department of Physics, Yantai University, Yantai 264003 (China); Wu Guangfen; Song Jianjun; Liu Zhuang [Center for Photovoltaics and Solar Energy, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences and Chinese University of Hong Kong, Shenzhen 518055 (China); Yang Chunlei, E-mail: cl.yang@siat.ac.cn [Center for Photovoltaics and Solar Energy, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences and Chinese University of Hong Kong, Shenzhen 518055 (China)

    2013-02-01

    Hydrogen-rich materials have fascinating physical and chemical properties such as various structures and superconductivity under high-pressure. They are believed as an alternative approach to realize the hydrogen superconducting. In the previous report ([17] Zhong et al., J. Phys. Chem. C 116 (2012) 5225), we had presented structural phase-transitions and bonding interaction variations induced by pressure, and predicted a stable and superconductive phase above 220 GPa, P2{sub 1}/c. In this study, we focus on the change of superconducting transition temperature induced by pressure above 220 GPa for GeH{sub 4}(H{sub 2}){sub 2}. The variations of bond lengths, electronic structures, phonon spectra, and electron-phonon interaction with the increases of pressure are investigated. We find that the superconducting transition temperature monotonously decreases with the increase of pressure from 230 to 350 GPa. The origin is mainly the stiff of phonon frequency induced by pressurization.

  17. Neodymium glass laser with a pulse energy of 220 J and a pulse repetition rate of 0.02 Hz

    Energy Technology Data Exchange (ETDEWEB)

    Kuzmin, A A; Kulagin, O V; Khazanov, Efim A; Shaykin, A A [Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)

    2013-07-31

    A compact neodymium glass laser with a pulse energy of 220 J and a record-high pulse repetition rate of 0.02 Hz (pulse duration 30 ns) is developed. Thermally induced phase distortions are compensated using wave phase conjugation. The integral depolarisation of radiation is decreased to 0.4% by using linear compensation schemes. The second harmonic of laser radiation can be used for pumping Ti : sapphire multipetawatt complexes. (letters)

  18. Processing and characterization of a MEDIPIX2-compatible silicon sensor with 220 {mu}m pixel size

    Energy Technology Data Exchange (ETDEWEB)

    Froejdh, Anna; Froejdh, Erik; Thungstroem, Goeran; Froejdh, Christer [Department of Information Technology and Media, Mid-Sweden University, SE-85170 Sundsvall (Sweden); Norlin, Boerje, E-mail: Borje.Norlin@miun.se [Department of Information Technology and Media, Mid-Sweden University, SE-85170 Sundsvall (Sweden)

    2011-05-15

    Pixellated silicon detectors with a pixel size of 220 {mu}m have been fabricated at Mid-Sweden University. The purpose was to make a detector compatible with the MEDIPIX2 readout chip with pixels large enough to avoid charge sharing to do spectral imaging. Two different guard ring structures have been tested to investigate leakage current and interpixel isolation in a sensor made on high resistivity silicon.

  19. First detection of GeV emission from an ultraluminous infrared galaxy Arp 220 with the Fermi Large Area Telescope

    CERN Document Server

    Peng, Fang-Kun; Liu, Ruo-Yu; Tang, Qing-Wen; Wang, Jun-Feng

    2016-01-01

    Cosmic rays (CRs) in starburst galaxies produce high energy gamma-rays by colliding with the dense interstellar medium. Arp 220 is the nearest ultra luminous infrared galaxy (ULIRG) that has star-formation at extreme levels, so it has long been predicted to emit high-energy gamma-rays. However, no evidence of gamma-ray emission was found despite intense efforts of search. Here we report the discovery of high-energy gamma-ray emission above 200 MeV from Arp 220 at a confidence level of $\\sim 6.3 \\sigma $ using 7.5 years of \\textsl {Fermi} Large Area Telescope observation. The gamma-ray emission shows no significant variability over the observation period and it obeys the quasi-linear scaling relation between the gamma-ray luminosity and total infrared luminosity for star-forming galaxies, suggesting that these gamma-rays arise from CR interactions. As the high density gas makes Arp 220 an ideal CR calorimeter, the gamma-ray luminosity can be used to measure the efficiency of powering CRs by supernova remnants ...

  20. Sensitivity of LR115 detector in diffusion chamber to {sup 222}Rn in the presence of {sup 220}Rn

    Energy Technology Data Exchange (ETDEWEB)

    Koo, V.S.Y.; Yip, C.W.Y.; Ho, J.P.Y.; Nikezic, D.; Yu, K.N. E-mail: peter.yu@cityu.edu.hk

    2002-06-01

    Determination has been made of the sensitivity of LR115 type 2-track detectors (in units of m) to {sup 222}Rn, measured in the presence of {sup 220}Rn. Measurements have been made by means of a widely used diffusion chamber while Monte Carlo simulations have also been conducted. The experimentally derived sensitivities for {sup 222}Rn and {sup 220}Rn were found to be 0.470{+-}0.022 and 0.486{+-}0.042 m, respectively. For Monte Carlo simulations, the sensitivities to {sup 222}Rn gas were found to range from 0.618x10{sup -2} m (assuming that all {sup 218}Po progeny decay before deposition onto the internal walls of the diffusion chamber) to 0.405x10{sup -2} m (assuming that all {sup 218}Po progeny are deposited on the internal walls of the same containment vessel before decaying). The sensitivity to {sup 220}Rn gas of 0.465x10{sup -2} m found from Monte Carlo simulations agrees to within uncertainty with experimental findings. The experimentally derived sensitivity value for {sup 222}Rn indicates that 30% of the {sup 218}Po progeny decay before deposition onto the internal walls of the diffusion chamber.

  1. HIGH-RESOLUTION RADIO CONTINUUM MEASUREMENTS OF THE NUCLEAR DISKS OF Arp 220

    Energy Technology Data Exchange (ETDEWEB)

    Barcos-Muñoz, L.; Evans, A. S.; Privon, G. C.; Stierwalt, S. [Department of Astronomy, University of Virginia, 530 McCormick Road, Charlottesville, VA 22904 (United States); Leroy, A. K.; Condon, J.; Reichardt, A. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22904 (United States); Armus, L. [Spitzer Science Center, California Institute of Technology, MC 220-6, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Mazzarella, J. M.; Murphy, E. J. [Infrared Processing and Analysis Center, MS 100-22, California Institute of Technology, Pasadena, CA 91125 (United States); Meier, D. S. [New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801 (United States); Momjian, E.; Ott, J. [National Radio Astronomy Observatory, P.O. Box O, 1003 Lopezville Road, Socorro, NM 87801 (United States); Sakamoto, K. [Academia Sinica, Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan (China); Sanders, D. B. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96816 (United States); Schinnerer, E.; Walter, F. [Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg (Germany); Surace, J. A. [Spitzer Science Center, MS 314-6, California Institute of Technology, Pasadena, CA 91125 (United States); Thompson, T. A., E-mail: ldb7et@virginia.edu [Department of Astronomy and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210 (United States)

    2015-01-20

    We present new Karl G. Jansky Very Large Array radio continuum images of the nuclei of Arp 220, the nearest ultra-luminous infrared galaxy. These new images have both the angular resolution to study the detailed morphologies of the two nuclei that power the galaxy merger and sensitivity to a wide range of spatial scales. At 33 GHz, we achieve a resolution of 0.''081 × 0.''063 (29.9 × 23.3 pc) and resolve the radio emission surrounding both nuclei. We conclude from the decomposition of the radio spectral energy distribution that a majority of the 33 GHz emission is synchrotron radiation. The spatial distributions of radio emission in both nuclei are well described by exponential profiles. These have deconvolved half-light radii (R {sub 50d}) of 51 and 35 pc for the eastern and western nuclei, respectively, and they match the number density profile of radio supernovae observed with very long baseline interferometry. This similarity might be due to the fast cooling of cosmic rays electrons caused by the presence of a strong (∼mG) magnetic field in this system. We estimate extremely high molecular gas surface densities of 2.2{sub −1.0}{sup +2.1}×10{sup 5} (east) and 4.5{sub −1.9}{sup +4.5}×10{sup 5} (west) M {sub ☉} pc{sup –2}, corresponding to total hydrogen column densities of N {sub H} = 2.7{sub −1.2}{sup +2.7}×10{sup 25} (east) and 5.6{sub −2.4}{sup +5.5}×10{sup 25} cm{sup –2} (west). The implied gas volume densities are similarly high, n{sub H{sub {sub 2}}}∼3.8{sub −1.6}{sup +3.8}×10{sup 4} (east) and ∼11{sub −4.5}{sup +12}×10{sup 4} cm{sup –3} (west). We also estimate very high luminosity surface densities of Σ{sub IR}∼4.2{sub −0.7}{sup +1.6}×10{sup 13} (east) and Σ{sub IR}∼9.7{sub −2.4}{sup +3.7}×10{sup 13} (west) L{sub ⊙} kpc{sup −2}, and star formation rate surface densities of Σ{sub SFR} ∼ 10{sup 3.7} {sup ±} {sup 0.1} (east) and Σ{sub SFR} ∼ 10{sup 4.1} {sup ±} {sup 0.1}(west) M

  2. The influence of soil water status on Oryza Sativa Var. MR220 in KADA rice agroecosystem

    International Nuclear Information System (INIS)

    A study to determine the influence of soil water status on rice plant Oryza sativa var. MR220 after panicle initiation stage was carried out at Ladang Merdeka Mulong Lating in the Kemubu Agricultural Development Authority (KADA) area, Kelantan. Five water management treatments imposed on direct seeded rice were; T1. Continuous flooding, T2. Early flooding up to panicle initiation stage followed by saturated (F55-saturated), T3. Early flooding for the first month followed by saturated (F-30 saturated), T4. Continuous saturated, and T5. Continuous field capacity condition throughout the growth stage. The treatments were arranged in Randomized Complete Block Design (RCBD) with four replicates. Results showed significant differences in soil moisture content in the order of T1>T2>T3>T4>T5. Significant differences were also observed in rice plant water content at 68 DAS (days after seeding) in the order of T2>T3>T4>T1>T5. Moisture content also showed significant differences between replicates in the order of R1>R2>R3>R4 and R2>R1>R3>R4; in rice plant and ricefield soil, respectively. Results however showed no significant difference in leaf stomatal conductance due to water stress. Rice plant moisture, soil moisture and leaf stomatal conductance showed no interaction. Published results show that even though overall crop yield was reduced by sheath blight and panicle blast incidence that occur at later stage in 2004-2005 field trials, highest grain yields were obtained from T2 (off season) and T4 (main season). Saturated condition seems to be the most suitable method of growing rice under minimal water input in KADA rice agroecosystem. (Author)

  3. Insights from the draft genome of the subsection V (Stigonematales) cyanobacterium Hapalosiphon sp. Strain MRB220 associated with 2-MIB production.

    Science.gov (United States)

    Tan, Boon Fei; Te, Shu Harn; Boo, Chek Yin; Gin, Karina Yew-Hoong; Thompson, Janelle Renee

    2016-01-01

    A non-axenic unialgal culture containing a Subsection V (Stigonematales) cyanobacterium, Hapalosiphon strain MRB 220, was obtained from a benthic freshwater algal mat through multiple transfers following growth in sterile media. Physiological characterization demonstrated the culture was capable of nitrogen-fixation and production of the off flavor compound 2-methylisoborneol (2-MIB). Total DNA isolated from this culture was sequenced using Illumina HiSeq and de novo assembled into contigs. The genome of MRB 220 was separated from co-occurring heterotrophic bacteria using sequence homology and compositional approaches, and its purity was confirmed based on best BLAST hit classification and principle component analysis of the tetranucleotide frequencies of fragmented contigs. The genome of ~7.4 Mbp contains 6,345 protein coding genes with 4,320 of these having functional prediction including predicted pathways for biosynthesis of the secondary metabolite welwitindolinone. Analyses of 16S rRNA gene and whole genome sequence average nucleotide identity indicated close relatedness of MRB 220 to the genera Hapalosiphon and Fischerella within the order Stigonematales. Microscopic examination showed that MRB 220 formed heterocystous branched filaments, thereby supporting identification of strain MRB 220 as a morphospecies of Hapalosiphon. Availability of the draft genome of Hapalosiphon strain MRB 220 enables future work to elucidate the pathway and dynamics for biosynthesis of 2-MIB and other secondary metabolites and understand the ecology and physiology of Stigonematales cyanobacteria in tropical freshwaters. PMID:27594977

  4. Insights from the draft genome of the subsection V (Stigonematales) cyanobacterium Hapalosiphon sp. Strain MRB220 associated with 2-MIB production.

    Science.gov (United States)

    Tan, Boon Fei; Te, Shu Harn; Boo, Chek Yin; Gin, Karina Yew-Hoong; Thompson, Janelle Renee

    2016-01-01

    A non-axenic unialgal culture containing a Subsection V (Stigonematales) cyanobacterium, Hapalosiphon strain MRB 220, was obtained from a benthic freshwater algal mat through multiple transfers following growth in sterile media. Physiological characterization demonstrated the culture was capable of nitrogen-fixation and production of the off flavor compound 2-methylisoborneol (2-MIB). Total DNA isolated from this culture was sequenced using Illumina HiSeq and de novo assembled into contigs. The genome of MRB 220 was separated from co-occurring heterotrophic bacteria using sequence homology and compositional approaches, and its purity was confirmed based on best BLAST hit classification and principle component analysis of the tetranucleotide frequencies of fragmented contigs. The genome of ~7.4 Mbp contains 6,345 protein coding genes with 4,320 of these having functional prediction including predicted pathways for biosynthesis of the secondary metabolite welwitindolinone. Analyses of 16S rRNA gene and whole genome sequence average nucleotide identity indicated close relatedness of MRB 220 to the genera Hapalosiphon and Fischerella within the order Stigonematales. Microscopic examination showed that MRB 220 formed heterocystous branched filaments, thereby supporting identification of strain MRB 220 as a morphospecies of Hapalosiphon. Availability of the draft genome of Hapalosiphon strain MRB 220 enables future work to elucidate the pathway and dynamics for biosynthesis of 2-MIB and other secondary metabolites and understand the ecology and physiology of Stigonematales cyanobacteria in tropical freshwaters.

  5. STUDY ON PERFORMANCE OF 220 kV M/C MA TOWER DUE TO WIND

    Directory of Open Access Journals (Sweden)

    V. LAKSHMI,

    2011-03-01

    Full Text Available Electric Power is today playing an increasingly important role in the life of the community. In the electric power system the production and transmission of power are two predominant factors. For the purpose of transmission of electricity towers are the main medium with some wires at required distances and altitudes. The remotehydroelectric power plants have given rise to the need for extra high voltage. Prior to 1950, 150 kV electric transmission lines were considered and still higher voltages are being considered these days. Hence it has given rise to the need for relative tall structures such as towers. Thus the study of designing and erection of steel towers has become a challenging task. Transmission line tower normally omprise of several hundred - angle members eccentrically connected. Structural analysis of this type of structure requires extensive data generation. Conventional process of data generation in describing the topology, geometry, load and support conditions are very tedious, time consuming and susceptible to error. In general, most towers may be idealized as statically determinate and analyzed for forces. However, the computations are very lengthy and there are many chances of making errors in such cases. Further if a member is to be redesigned then the entire wind load computations have to be repeated. The computational problem in tower is more acute and tedious as the load depends on the member sizes. A rational and economical design can be made with the help of software’s like STADD Pro 2003, SAP-2000.In this dissertation an attempt is made to develop a software for load calculations on transmission line towers of capacity 220 kV, only as per new code i.e., IS – 802 (Part- I / Sec-1:1995 by considering reliability, security, safety and anti-cascading conditions. In MS-office the EXCEL is used to develop program for wind load calculations on the tower and other loads like wind load on conductor, conductor weights are

  6. Radon exposure in homes: is the contribution of {sup 220}Rn (thoron) to dose always negligible?

    Energy Technology Data Exchange (ETDEWEB)

    Tschiersch, J.; Muesch, M. [GSF-National Research Center for Environment and Health, Inst. of Radiation Protection, Neuherberg (Germany)

    2005-07-01

    {sup 222}Rn (half-life 3.8 d) which emanates from the soil or building material into the indoor air has enough time for diffusion into the room and to become well mixed in the room atmosphere. In contrast, {sup 222}Rn (thoron) which has the short half-life of only 56 s has a lower emanation from soil and may be prevented by simple diffusion barriers on top of the building material to enter the room atmosphere. In general, the effective dose resulting from thoron is estimated to be only about 10% of that of radon (UNSCEAR 2000) and is therefore often not considered in the dose estimates at all. But there are circumstances in which the contribution of thoron to the inhalation dose is much higher. Such a case was investigated at the Loess plateau of Gansu, China, in a pilot study. The dwellings in that area are cut directly into the porous loess or built of adobe on the loess ground. The enhanced emanation from the porous building material and the large emanating surface caused considerably concentrations of thoron and thoron decay products. In 6 different dwellings measurements were performed for 1 day. The mean thoron concentrations ranged 40 - 490 Bq/m{sup 3} (thoron gas) and 0.9 - 13 Bq/m{sup 3} (thoron EEC), whereas the mean radon concentrations ranged 44 - 220 Bq/m{sup 3} (radon gas) and 26 - 190 Bq/m{sup 3} (radon EEC). If we compare the decay product concentration of thoron and radon on the dose relevant basis of the potential alpha-energy concentration (PAEC) (which is expressed in J/m{sup 3}) we have to take into account that the thoron/radon PAEC ratio is higher by a factor of 13.7 than the thoron/radon EEC ratio. This means for our case that the contribution of thoron to the inhalation dose has the same order of magnitude as the contribution of radon. Therefore, thoron should not be neglected in inhalation dose assessments for dwellings with the same exhalation characteristics as the dwellings in this study. (orig.)

  7. 解决超调问题的220kV变电站无功配置方法%A Configuration Method of Reactive Power Compensation for 220 kV Substations to Reduce Voltage Overshoot

    Institute of Scientific and Technical Information of China (English)

    张勇军; 张豪; 杨雄平

    2012-01-01

    In allusion to the difficulty of voltage regulation due to excessive compensation capacity of single compensator set and absence of inductive and dynamic reactive compensation in 220 kV substations, a synthetical reactive power compensation scheme for 220 kV substation, which combines discrete compensation with continuous compensation, is proposed. In the proposed scheme, the compensation system is composed of one set of direct static synchronous compensator (STATCOM) and shunt capacitor banks which can be flexibly switched. Firstly, an evaluation model for reactive power compensation and votlage regulation in 220 kV substation and its evaluation index called reactive power overshoot rate are constructed and such an index reflects the contradiction between finite number of reactive power compensator sets and inadvisability of excessive compensation capacity of single compensator set, thus the proposed compensation configuration scheme becomes a fundamental way to improve the accuracy of steady-state voltage control and reduce the overshoot to ensure transient voltage stability at receiving end. Simulation results of a certain regional power network in Guangdong province show that the proposed method is favorable to steady-state voltage stability control of power network and can provide effective dynamic voltage support under emergency condition.%针对220kV变电站单组补偿容量配置偏大、感性与动态无功补偿缺乏引起的电压调控困难问题,提出了220kV变电站离散与连续相结合的综合无功补偿方案,由一组直接式静止同步补偿器(static synchronous compensator,STATCOM)和采用开关柔性控制技术的并联电容器组组成补偿系统.首先构建了变电站无功补偿调压估算模型和指标——无功超调率,该指标揭示了当前变电站无功补偿配置组数有限和单组容量不宜过大之间的矛盾,使得220 kV变电站采用所提的新型补偿方案成为了解决受端系统的稳态

  8. 220 kV变电站GIS断路器短路典型事故分析%Analysis on Typical GIS Breaker Short-circuit Fault in 220 kV Substation

    Institute of Scientific and Technical Information of China (English)

    李晓刚

    2014-01-01

    介绍了某220 kV变电站气体绝缘金属封闭开关设备(gas insulated metal enclose switchgear,GIS)断路器短路事故经过。通过对220 kVGIS短路事故后的故障录波、气体成分、断路器解体及出厂原始数据的综合分析,认为在出厂时的雷电冲击试验中的击穿、放电造成的断路器极间绝缘筒的缺陷是事故发生的主要原因。并通过事故过程的还原从另一角度验证了事故原因分析的正确性,并提出了相应的建议,同时为类似 GIS 故障的处理分析提供借鉴与参考。%This paper introduces one GIS breaker short-circuit accident in some 220 kV substation.By comprehensively analy-zing fault recording,gas components,breaker disintegration and factory original data after the short-circuit fault,the main reason for the accident was considered to be defect of breaker interelectrode insulating cylinder caused by breakdown and discharge in factory lightning impulse test.Meanwhile,by review on the accident,correctness of accident reason analysis was verified from another angle and relevant suggestions were proposed for providing references on similar GIS fault handling a-nalysis.

  9. Dimensional verification and location of the reactive static compensator in 220 kV; Verificacion del dimensionamiento y ubicacion del compensador estatico de reactivos en 220 kV

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez Krekeler, Ubaldo [Administracion Nacional de Electricidad (ANDE), Asuncion (Paraguay)]. E-mail: ufernandez@ieee.org; Cardozo Sanchez, Freddy [Mirant Americas (United States)

    2001-07-01

    This work presents a determination verification of the compensation range and the location of reactive static compensator (RSC) in 220 kV. The verification is accomplished by analyses of the RSC effects in relation to the losses, loading and system voltage stability. The needed compensation range is investigated in full details, whereas that the required conversion level is directly related to this range. It is concluded that the RSC installation, foreseen for 2002, might be postponed for 2005/10 still without reinforcements in 500 kV. The Limpio substation seems to be the more suitable location in relation to the most analysed cases.

  10. Analysis of 220V AC intrude DC control circuit caused generating units tripping%220V工频交流窜入直流控制回路造成机组跳闸分析

    Institute of Scientific and Technical Information of China (English)

    陈莉; 南泽瑞

    2013-01-01

    介绍了一起由于电弧引起的工频交流窜人直流控制回路造成机组跳闸的故障情况。通过试验检查、分析找出了问题的原因,并采取相应的处理及防范措施。%Abnormal condition of a 220V AC intrude DC current fault caused by electric-arc is introduced in this paper. This caused generating units tripping. The reason is concluded and the corresponding measures are proposed with the experiment, inspection, analysis.

  11. 研华ARK-DS220OPS数字标牌获2012年台湾精品奖

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    研华科技近日推出了兼容OPS(开放式可插拔规范)的数字标牌ARK-DS220,并荣获了2012年台湾精品奖的殊荣。今年,此项奖项共426家厂商、1145件产品报名角逐,而研华脱颖而出获此殊荣,充分彰显了其在设计、制造、卓越创新方面的领导力。ARK-DS220符合Intel OPS标准,从而简化了设备安装。同时,将Intel凌动TM处理器和NVIDIAGT218(ION2)显示模块整合在一起,实现了低功耗、高性能的特性。强大的冷却功能保证了系统的稳定性,对细节的完美把握也满足了客户的需求。凭借着这些卓越的特性,研华ARK-DS220代表了台湾本地科技创新的卓越水平,为尖端产品的设计和制造创造了附加价值。

  12. Dose to tissues and effective dose equivalent by inhalation of radon-222, radon-220 and their short-lived daughters

    International Nuclear Information System (INIS)

    In this study the results of a sensitivity analysis are described which shows the influence of relevant physical and biological parameters on the dose from inhaled Rn-222, Rn-220 and their daughters to the basal cell layer of the bronchi, to the pulmonary tissues and to other body tissues. The used models for deposition, retention and dosimetry of inhaled daughters take into regard the variation of following parameters: The AMAD of inhaled radioactive particles; the fraction of unattached daughters atoms; the velocity of ciliary transport; the desorption rate of attached daughter atoms from their particles; the absorption rate to blood; and the depth of the basal cell layer in the bronchial generations. A computer programme was set-up for the calculation of the activity and dose distribution in the lungs as function of these parameters. For the evaluation of the effective dose from inhaled mixtures of Rn-222- and Rn-220-daughters three different alternatives for the weighting of the mean doses to the target tissues in the lungs are described, taking into regard possible differences between the cancerogenic sensitivity of the target cells in the bronchial and alveolar region. On the basis of the results of this sensitivity analysis mean values for the effective dose to adults per unit of inhaled potential α-energy (in Joule) and per unit of potential α-energy (in WLM) of daughters mixtures are derived as function of the unattached fraction of potential α-energy in air and the desorption half-life time of attached daughter atoms in the lungs. In addition the effective dose from inhaled Rn-222 and Rn-220 (+ Po-216) is estimated and compared with the effective dose from inhaled daughters. Finally the consequences for the assessment of intake and exposure limits for workers and for members of the public are outlined. (orig.)

  13. Clinical axillary recurrence after sentinel node biopsy in breast cancer: a follow-up study of 220 patients

    Energy Technology Data Exchange (ETDEWEB)

    Sanjuan, A. [University of Barcelona, Department of Gynecology and Obstetrics, Breast Pathology Unit (Spain); Hospital Clinic Provincial, Barcelona (Spain); Vidal-Sicart, S.; Pons, F. [University of Barcelona, Department of Nuclear Medicine, Hospital Clinic (Spain); Zanon, G.; Pahisa, J.; Vanrell, J.A. [University of Barcelona, Department of Gynecology and Obstetrics, Breast Pathology Unit (Spain); Velasco, M.; Santamaria, G. [University of Barcelona, Department of Radiology, Breast Pathology Unit, Hospital Clinic (Spain); Fernandez, P.L. [University of Barcelona, Department of Pathology, Breast Pathology Unit, Hospital Clinic (Spain); Farrus, B. [University of Barcelona, Department of Radiation Oncology, Breast Pathology Unit, Hospital Clinic (Spain); Munoz, M.; Albanell, J. [University of Barcelona, Department of Medical Oncology, Breast Pathology Unit, Hospital Clinic (Spain)

    2005-08-01

    The aim of this study was to evaluate the frequency of false-negative (FN) sentinel node procedures in patients with breast cancer and the subsequent clinical outcome in such patients. A total of 325 breast cancer patients underwent sentinel lymph node biopsy at our institution between June 1998 and May 2004. A 2-day protocol was used to localise the sentinel node with the injection of{sup 99m}Tc-nanocolloid. There were two phases in the study: the learning phase (105 patients) and the application phase (220 patients). In the learning phase, a complete lymphadenectomy was always performed. In the application phase, sentinel nodes were studied intraoperatively and lymphadenectomy was performed when considered warranted by the pathological intraoperative results. The median follow-up duration in the 220 patients studied during the application phase was 21.2 months (range 4-45 months). In this phase a total of 427 sentinel nodes were obtained (range 1-5 per patient, median 1.99), with 66 positive sentinel nodes in 56 patients (26%). The lymphadenectomies performed were also positive in 25% of cases (14 patients). We observed a total of two false-negative sentinel lymph node results (3.45%). One of them was found during the surgical excision of non-sentinel nodes, and the other presented as an axillary recurrence 17 months postoperatively (1.72% clinical false-negative rate). The latter patient died 1 year after the first recurrence. After a median follow-up of 21.2 months we observed only one clinical recurrence among 220 patients. Our results indicate that adequate local control is achieved by application of the sentinel node protocol. (orig.)

  14. Effectiveness of the Top-Down Nanotechnology in the Production of Ultrafine Cement (~220 nm)

    OpenAIRE

    Byung-Wan Jo; Sumit Chakraborty; Ki Heon Kim; Yun Sung Lee

    2014-01-01

    The present investigation is dealing with the communition of the cement particle to the ultrafine level (~220 nm) utilizing the bead milling process, which is considered as a top-down nanotechnology. During the grinding of the cement particle, the effect of various parameters such as grinding time (1–6 h) and grinding agent (methanol and ethanol) on the production of the ultrafine cement has also been investigated. Performance of newly produced ultrafine cement is elucidated by the chemical c...

  15. Measurements of octupole collectivity in $^{220,222}$Rn and $^{222,224}$Ra using Coulomb excitation

    CERN Multimedia

    Kruecken, R; Larsen, A; Hurst, A M; Voulot, D; Grahn, T; Clement, E; Wadsworth, R; Gernhaeuser, R A; Siem, S; Huyse, M L; Iwanicki, J S

    2008-01-01

    We propose to exploit the unique capability of ISOLDE to provide post-accelerated $^{220,222}$Rn and $^{222,224}$Ra ion beams from the REX facility to enable the Coulomb excitation of the first 3$^{-}$ states in these nuclei. By measuring the $\\gamma$-ray yields of the E1 decays from the 3$^{-}$ state using the MINIBALL array we can obtain the transition matrix elements. This will give quantitative information about octupole correlations in these nuclei. We require 22 shifts to fulfil the aims of the experiment.

  16. Impact of SSSC on Measured Impedance in Single Phase to Ground Fault Condition on 220 kV Transmission Line

    Directory of Open Access Journals (Sweden)

    Mohamed ZELLAGUI

    2012-08-01

    Full Text Available This paper presents and compares the impact of SSSC on measured impedance for single phase to ground fault condition. The presence of Static Synchronous SSSC on a transmission line has a great influence on the ZRelay in distance protection. The protection of the high voltage 220 kV single circuit transmission line in eastern Algerian electrical transmission networks is affected in the case with resistance fault RF. The paper investigate the effect of Static Synchronous Series Compensator (SSSC on the measured impedance (Relay taking into account the distance fault point (n and fault resistance (RF. The resultants simulation is performed in MATLAB software environment.

  17. A new distorted body-centred cubic phase of titanium (delta-Ti) at pressures up to 220 GPa

    CERN Document Server

    Akahama, Y; Bihan, T L

    2002-01-01

    Structural phase transitions of titanium (Ti) have been investigated at pressures up to 220 GPa at room temperature using a monochromatic synchrotron x-ray diffraction technique. At 140 GPa, the hexagonal phase (omega-Ti) was transformed into an orthorhombic phase (delta-Ti) with a distorted bcc structure via an intermediate phase (gamma-Ti), which has recently been proposed. The delta-Ti and gamma-Ti phases had a unique zigzag-chain-like structure, which resulted from an orthorhombic distortion.

  18. Comprehensive software for the assessment of {sup 222}Rn and {sup 220}Rn decay products based on air sampling measurements

    Energy Technology Data Exchange (ETDEWEB)

    Sima, Octavian [Physics Department, University of Bucharest, Bucharest-Magurele, P.O. Box MG-11, RO-077125 (Romania)], E-mail: octavian.sima@ik.fzk.de

    2009-05-15

    A computational tool dedicated to the measurement of {sup 222}Rn and {sup 220}Rn decay products by air sampling is presented. {alpha}- or {gamma}-spectrometry measurements, gross {alpha} or {beta} counting, as well as a combination of them are considered. Special attention is given to the evaluation of the uncertainty budget of the results. Besides typical applications in the analysis of experimental data, the software can be used for assessing the expected quality of a measurement protocol and for optimizing it, by generating and analyzing sets of realistic synthetic data.

  19. A new distorted body-centred cubic phase of titanium ({delta}-Ti) at pressures up to 220 GPa

    Energy Technology Data Exchange (ETDEWEB)

    Akahama, Yuichi [Faculty of Science, Himeji Institute of Technology, 3-2-1, Kouto, Kamigohri, Hyogo 678-1297 (Japan); Kawamura, Haruki [Faculty of Science, Himeji Institute of Technology, 3-2-1, Kouto, Kamigohri, Hyogo 678-1297 (Japan); Bihan, Tristan Le [Faculty of Science, Himeji Institute of Technology, 3-2-1, Kouto, Kamigohri, Hyogo 678-1297 (Japan)

    2002-11-11

    Structural phase transitions of titanium (Ti) have been investigated at pressures up to 220 GPa at room temperature using a monochromatic synchrotron x-ray diffraction technique. At 140 GPa, the hexagonal phase ({omega}-Ti) was transformed into an orthorhombic phase ({delta}-Ti) with a distorted bcc structure via an intermediate phase ({gamma}-Ti), which has recently been proposed. The {delta}-Ti and {gamma}-Ti phases had a unique zigzag-chain-like structure, which resulted from an orthorhombic distortion.

  20. 220kV线路两套保护装置动作特性分析%Analysis of Action Characteristics of Two sets of Protection Device for a 220 kV Line

    Institute of Scientific and Technical Information of China (English)

    容春艳; 郝春赫; 王文贞

    2011-01-01

    This paper analyzed the protection action process of two sets of independent line and the instantaneous records in the wave record device,when the permanent fault of a 220 kV interval line happened.From the fault type,fault distance and the switch movement,it clarified the correctness of the protection movement,and explained some problems in the action report.%文中分析了某220kV间隔线路发生永久性故障时两套相互独立的线路保护的动作过程和录波器瞬时记录情况,从故障类型、故障距离及开关量动作等方面阐明了保护动作的正确性,并对动作报告中一些问题给予解释和说明。

  1. Causes Leading to Corrosion - Fracture of Cable Shielding Wires at a 220 kV Electric Substation%220kV变电站电缆屏蔽线腐蚀断裂的原因

    Institute of Scientific and Technical Information of China (English)

    徐锐; 唐囡; 伍发元

    2013-01-01

    For the purpose of ensuring the safe opera tion of a 220 kV electric substation, the environmental sates of the substation and its terminal boxes were examined, and the residual cable shielding wires as well as corresponding corroded products were monitored. Furthermore, causes leading to corro sion of the cable shielding wires and their corrosion mechanism were discussed. It was found that the corrosion - fracture of the cable shielding wires used at the electric substation was mainly attributed to the material nature of the copper coated Al wires. Resides, the air with poor quality and the wet environment in the terminal boxes were the external factors to accelerate the corrosion of the cable shielding wires.%为保障某220 kV变电站的安全运行,对该变电站及其端子箱的环境状况进行检查,并对残存屏蔽线及其腐蚀产物进行检测,探讨屏蔽线的腐蚀原因及腐蚀机理.提出电缆屏蔽线选用铜包铝线材质是其发生腐蚀断裂的主要原因,变电站空气质量差和端子箱内潮湿的环境促进了腐蚀的发生.

  2. 贵州电网220kV及500kV线路绝缘子运行简析%Analysis of Guizhou Power Grid 220 kV -500 kV line insulator running

    Institute of Scientific and Technical Information of China (English)

    虢韬

    2012-01-01

    The reliability service of transmission line directly affected the power network safe operation. As an integral part of transmission line, insulators long exposed to natural environment and easy to erosion and destruction, made natural deterioration rate rise and damage rate increase. This paper analyzed the operation of insulators of Guizhou power grid 220 kV - 500 kV lines, put forward measures and suggestions which suit for the insulators maintenance and operation on HV transmission lines in Guizhou mountainous area, efficaciously improved the grid security and stability in some way.%输电线路的可靠运行直接关系到电网安全运行,绝缘子作为输电线路不可或缺的部分,长期暴露在自然环境中,易受到外界环境的直接侵蚀和破坏,自然劣化率加速、其受损几率较大。本文分析贵州电网220kV及500kV线路绝缘子运行状况,提出了适合贵州山区高压输电线路绝缘子维护和运行的措施及建议,一定程度上能有效提升电网安全稳定。

  3. 220kV高压输电线路检修的危险点分析%220 kv High-voltage Transmission Line Maintenance of Dangerous Point Analysis

    Institute of Scientific and Technical Information of China (English)

    郭海涛

    2015-01-01

    在作业过程中危险可能存在的具体地点、具体方位及具体场所和具体动作称危险点。针对220kV高压输电线路中存在的危险点,对自然灾害、天气环境情况、线路自身缺陷、线路维修不善、输电线路铺设设计不合理等常见情况进行了科学分析,并提出了相应的预防控制办法。%In the process of operation risk the exact location of the possible,specific position and specific place and specific movement to call the danger point.In 220kv high-voltage transmission lines that exist in the dangerous points,to natural disasters,weather conditions,poor bird,line itself defects,line maintenance,violate compasses operation,artificial damage, transmission line laying design unreasonable,and other common situation has carried on the scientific analysis,and put forward the corresponding prevention and control measures.

  4. 免气腹针Trocar直入法造气腹腹腔镜手术220例应用体会%Experience of 220 cases of laparoscopic surgery by putting trocar to finish pneumoperitoneal without veress needle

    Institute of Scientific and Technical Information of China (English)

    任玉环; 马生秀

    2008-01-01

    目的 探讨免气腹针Trocar直入法造气腹腹腔镜手术的临床应用价值.方法 对2003年2月~2006年8月的220例妇科腹腔镜手术,采用免气腹针Trocar直入法造气腹作为研究组,随机选同期200例腹腔镜手术,使用气腹针穿刺造气腹作为对照组.结果 该组220例均成功穿刺并制造气腹,无1例发生脏器穿孔、腹膜后大血管损伤等严重并发症.结论 免气腹针Trocar直入法在腹腔镜手术中应用具有可行性和安全性,值得推广.

  5. Scientific Opinion on Flavouring Group Evaluation 220 Revision 3 (FGE.220Rev3): Consideration of genotoxic potential for α,β-unsaturated 3(2H)-Furanones from subgroup 4.4 of FGE.19

    DEFF Research Database (Denmark)

    Beltoft, Vibe Meister; Nørby, Karin Kristiane

    additional genotoxicity data were requested. In FGE.220, Revision 1, the Panel concluded that for the substances in subgroup 4.4b there is no concern for genotoxicity. In FGE.220, Revision 2, the Panel evaluated genotoxicity studies on two representative substances of subgroup 4.4a: 2,5-dimethylfuran-3(2H)-one...... [FL-no:13.119] and 4-acetyl-2,5-dimethylfuran-3(2H)-one [FL-no: 13.175]. Based on the submitted data the Panel concluded that 2,5-dimethylfuran-3(2H)-one [FL-no: 13.119] does not give rise to concern with respect to genotoxicity. For 4-acetyl-2,5-dimethylfuran-3(2H)-one [FL-no: 13.175] the concern...... for genotoxicity could not be ruled out, therefore the Panel requested a repetition of the submitted micronucleus study in the presence of S9-mix, or a combined in vivo micronucleus and Comet assay, including analysis of the liver. The Flavour Industry has tested again 4-acetyl-2,5-dimethylfuran-3(2H)-one [FL...

  6. Research and Design of Type 4JGH-220 Straw Stubble Returning to Field Machine%4JGH-220型秸秆根茬还田机的研究与设计

    Institute of Scientific and Technical Information of China (English)

    梁玉成; 刘国平; 许剑平; 郝剑英; 杨金砖

    2015-01-01

    针对玉米机收后秸秆根茬处理难的问题,设计4JGH-220型多功能秸秆根茬还田机。该机一次进地即可完成秸秆粉碎、根茬还田、地表镇压多项联合作业。介绍还田机的设计原理、主要技术参数、结构形式、工作原理,论述工作部件的设计思路,为我国北方旱作区提供适用的多项联合作业机具。%Aiming at solving the problem of how to deal with maize straw stubble after harvesting, type 4JGH-220 multifunctional straw stubble returning to field machine is designed. The machine can finish multiple joint operations of straw chopping, stubble returning to field and soil surface suppression at one time. In the article, it introduces the design theory, main technique parameters, structure form and operation principle of the machine, expounds the design thoughts of operation parts, and provides a suitable machine of multiple joint operations for arid area in the North of China.

  7. 一起220 kV SF6电流互感器故障原因分析%Analysis on a Fault of 220 kV SF6 Current Transformer

    Institute of Scientific and Technical Information of China (English)

    干建丽

    2015-01-01

    The paper imtroduces a fault of 220 kV SF6 curremt tramsformer of a power plamt amd the disassem-bly. It is determimed that the accidemt is caused by partial discharge due to cracks om basim-type imsulator surface, which fimally results im groumdimg fault. Maim imsulatiom breakdowm fault of SF6 curremt tramsformer cam be effectively prevemted through improvememt of equipmemt mamufacture level, equipmemt tramsportatiom regulatiom, equipmemt hamdover amd acceptamce stremgthemimg, regular detectiom of gas humidity amd decom-positiom products as well as regular imfrared detectiom.%介绍了某发电厂220 kV SF6电流互感器故障和解体情况,判别事故原因为盆式绝缘子表面裂纹引起局部放电,最终导致发生接地故障。通过提高设备制造水平,规范设备运输,加强设备交接验收工作,定期开展气体湿度和分解物检测,定期开展红外线检测等手段,可以有效预防SF6电流互感器主绝缘击穿故障。

  8. Development and calibration of system for measuring of {sup 220} Rn in exhaled air; Desenvolvimento e calibracao de um sistema para medidas de {sup 220} RN no ar exalado

    Energy Technology Data Exchange (ETDEWEB)

    Lucena, Eder Augusto de; Lipisztein, Joyce L. [Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, RJ (Brazil)

    1999-11-01

    Th{sup 233} is the parent of one of the natural radioactive series. This series contains {sup 220} Rn which is a noble gas. The study of this radionuclide is very important to estimate the intake via inhalation, due to the suspension of {sup 220} Rn decay products in situations where occupational exposure may occur. These situations include mining, milling and the use of minerals containing {sup 232} Th. This work contains a detailed description of the development of a device to measure thoron and its decay products in the human breath. This document also contains information about the calibration procedures using a {sup 228} Th standard liquid source. The detection system consists of a Zn S(Ag)-mylar disc coupled to a photomultiplier tube, which allows direct measurement of the activity in exhaled air. The calibration factor, determined through the measurements of the {sup 228} Th standard liquid source during 1 h and 30 minutes, was found to be (61 +/-3) Bq/cpm.(author) 3 refs., 3 figs.

  9. Analysis and Treatment of a Burnout Accident of 220 kV Main Transformer%一起220 kV 主变压器烧毁事故的分析与处理

    Institute of Scientific and Technical Information of China (English)

    安向勇; 齐慧文; 王东红

    2014-01-01

    This paper describes that low voltage side of 220 kV transformer suffered a short-circuit fault. Through experiments,the reasons was analysed and measures were put forward to prevent burnout caused by short-circuit,which is of significance for strengthening the operation management of transformer and preventing the similar damage.%阐述了某220 kV 主变压器(“主变”)遭受低压侧35 kV 线路近区短路故障情况,通过试验分析出主变内部短路烧毁原因,提出了防止主变压器近区短路烧毁的措施,对加强主变压器运行管理、防止主变压器损坏事故具有一定指导意义。

  10. High Resolution Observations of Molecular Lines in Arp 220: Kinematics, Morphology, and Limits on the Applicability of the Ammonia Thermometer

    CERN Document Server

    Zschaechner, Laura K; Walter, Fabian; Meyer, David S; Momjian, Emmanuel; Scoville, Nick

    2016-01-01

    We observe Arp 220, the nearest Ultra-Luminous Infrared Galaxy (ULIRG), over 4 GHz in the K and Ka bands. We provide constraints for the kinematics,morphology, and identify molecular species on scales resolving both nuclei (0.6" or 230 pc). We detect multiple molecular species, including hydroxyl in both cores. We tentatively detect H2O at 21.84 GHz in both nuclei, indicating the likely presence of maser emission. The observed frequency range also contains metastable ammonia transitions from (J,K) = (1,1) to (5,5), as well as the (9,9) inversion line, which, together are a well-known thermometer of dense molecular gas. Furthermore, the non-metastable (4,2) and (10,9) and possibly the (3,1) lines are also detected. We apply a standard temperature analysis to Arp 220. However, the analysis is complicated in that standard LTE assumptions do not hold. There are indications that a substantial fraction of ammonia could be in the non-metastable transitions as opposed to only the metastable ones. Thus, the non-metast...

  11. Changing profile of infective endocarditis: a clinicopathologic study of 220 patients in a single medical center from 1998 through 2009.

    Science.gov (United States)

    Li, Li; Wang, Hongyue; Wang, Linlin; Pu, Jielin; Zhao, Hong

    2014-10-01

    The epidemiologic profile of infective endocarditis has changed substantially over the past few years, especially in industrialized countries. Our study evaluates the clinical and pathologic characteristics of infective endocarditis patients treated by cardiac surgery in China during a 12-year period. We retrospectively evaluated 220 surgically treated infective endocarditis patients and analyzed their changes from the beginning of 1998 through 2009. The mean age of the patients increased from 36.9 to 42.7 years during those 12 years (P=0.036). The chief predisposing disease was congenital heart disease (32.8%), rather than rheumatic heart disease (13.2%); this rate did not change significantly during the 12 years. The prevalent congenital lesion was bicuspid aortic valve, the rate of which (55.6%) increased significantly over the 3 time intervals studied (P=0.016). The frequency of infective endocarditis after non-dental surgical and nonsurgical intervention was significantly greater (23.3%) during 1998 through 2001, compared with the 2 intervals that followed (9%; P=0.019). Streptococcus viridans was the most frequent causative agent overall (25.6%). Forty-seven of the 220 patients (21.4%) carried the clinical diagnosis of some other form of heart disease before surgery, but at surgery they were found to have infective endocarditis as the fundamental disease process. Of 47 patients, 33 (70.2%) had either very small or no vegetations but had focal necrosis and inflammation of valve tissue that supported the diagnosis of infective endocarditis.

  12. Effectiveness of the Top-Down Nanotechnology in the Production of Ultrafine Cement (~220 nm

    Directory of Open Access Journals (Sweden)

    Byung-Wan Jo

    2014-01-01

    Full Text Available The present investigation is dealing with the communition of the cement particle to the ultrafine level (~220 nm utilizing the bead milling process, which is considered as a top-down nanotechnology. During the grinding of the cement particle, the effect of various parameters such as grinding time (1–6 h and grinding agent (methanol and ethanol on the production of the ultrafine cement has also been investigated. Performance of newly produced ultrafine cement is elucidated by the chemical composition, particle size distribution, and SEM and XRD analyses. Based on the particle size distribution of the newly produced ultrafine cement, it was assessed that the size of the cement particle decreases efficiently with increase in grinding time. Additionally, it is optimized that the bead milling process is able to produce 90% of the cement particle <350 nm and 50% of the cement particle < 220 nm, respectively, after 6.3 h milling without affecting the chemical phases. Production of the ultrafine cement utilizing this method will promote the construction industries towards the development of smart and sustainable construction materials.

  13. Constraining Gamma-Ray Emission from Luminous Infrared Galaxies with Fermi-LAT; Tentative Detection of Arp 220

    CERN Document Server

    Griffin, Rhiannon D; Thompson, Todd A

    2016-01-01

    Star-forming galaxies produce gamma-rays primarily via pion production, resulting from inelastic collisions between cosmic ray protons and the interstellar medium (ISM). The dense ISM and high star formation rates of luminous and ultra-luminous infrared galaxies (LIRGs and ULIRGs) imply that they should be strong gamma-ray emitters, but so far only NGC 1068 has been detected. Theoretical models for their emission depend on the unknown fraction of cosmic ray protons that escape these galaxies before interacting. We analyze Fermi Large Area Telescope data for 82 of the brightest IRAS LIRGs and ULIRGs on the sky. We examine each system individually and carry out a stacking analysis to constrain their gamma-ray fluxes. We report the detection of the nearest ULIRG Arp 220 (3.44sigma above background), with a gamma-ray flux (0.8-100 GeV) of 3.2e-10 phot cm^-2 s^-1 (1.5e42 ergs s^-1 at 77 Mpc). We also derive upper limits for the stacked LIRGs and ULIRGs. The gamma-ray luminosity of Arp 220 and the stacked upper lim...

  14. CO J=6--5 in Arp 220: strong effects of dust on high-J CO lines

    CERN Document Server

    Papadopoulos, Padeli P; van der Werf, Paul

    2010-01-01

    We report new single dish CO J=6--5 line observations for the archetypal Ultra Luminous Infrared Galaxy (ULIRG) Arp 220 with the James Clerk Maxwell Telescope atop Mauna Kea in Hawaii. The J=6--5 line is found to be faint, with brightness temperature ratios (6--5)/(1--0), (6--5)/(3--2) of R_{65/10} = 0.080+/-0.017 and R_{65/32} = 0.082+/-0.019, suggesting very low excitation conditions that cannot be reconciled with the warm and very dense molecular gas present in one of the most extreme starbursts in the local Universe. We find that an optically thick dust continuum, with tau(f>350 GHz)>=1 for the bulk of the warm dust and gas in Arp 220, submerges this line to an almost black body curve, reducing its flux, and {\\it affecting its CO Spectral Line Energy Distribution (SLED) at high frequencies}. This also resolves the CII line deficiency in this object, first observed by {\\it ISO}: the near absence of that line is a dust optical depth effect, not a dense Photodissociation Region (PDR) phenomenon. Finally we b...

  15. A model to explain simultaneously the {sup 222}Rn and {sup 220}Rn emanation from thin electrodeposited sources

    Energy Technology Data Exchange (ETDEWEB)

    Vargas, M.J.M. Jurado. E-mail: mjv@unex.es

    2000-06-11

    In thin radioactive sources, loss of radon by emanation is a very common phenomenon, especially in sources made by electrodeposition. A quantification of this effect in radium sources can be easily developed by using a simple model that assumes a radon diffusion term in the ingrowth equations. By measuring the corresponding Rn/Ra activity ratio, a constant diffusion factor can be determined which represents the Rn emanation from the whole source. However, this simple model cannot explain simultaneously the {sup 222}Rn and {sup 220}Rn diffusion produced in a thin source, because it gives diffusion factors that are different by many orders of magnitude for these two isotopes, while these values must be fairly close. In this paper, a new model of diffusion is proposed, which includes a linear dependence of the diffusion factor on the depth of Rn nuclides in the source. This new model has been applied to radium electrodeposited sources and allows us to explain satisfactorily both the {sup 220}Rn/{sup 224}Ra and {sup 222}Rn/{sup 226}Ra activity ratios observed in thin sources.

  16. The radio spectra of the compact sources in Arp 220: A mixed population of supernovae and supernova remnants

    CERN Document Server

    Parra, R; Diamond, P J; Thrall, H; Lonsdale, C J; Smith, H E; Parra, Rodrigo; Conway, John E.; Diamond, Philip J.; Thrall, Hannah; Lonsdale, Colin J.; Lonsdale, Carol J.; Smith, Harding E.

    2006-01-01

    We report the first detection at multiple radio wavelengths (13, 6 and 3.6 cm) of the compact sources within both nuclei of the Ultra Luminous Infra-Red Galaxy Arp 220. We present the radio spectra of the 18 detected sources. In just over half of the sources we find that these spectra and other properties are consistent with the standard model of powerful Type IIn supernovae interacting with their pre-explosion stellar wind. The rate of appearance of new radio sources identified with these supernova events suggests that an unusually large fraction of core collapse supernovae in Arp 220 are highly luminous; possibly implying a radically different stellar initial mass function or stellar evolution compared to galactic disks. Another possible explanation invokes very short (~3 x 10^5 year) intense (~10^3 M_Sol year^-1) star formation episodes with a duty cycle of ~10%. A second group of our detected sources, consisting of the brightest and longest monitored sources at 18 cm do not easily fit the radio supernova ...

  17. An automatic static chamber for continuous {sup 220}Rn and {sup 222}Rn flux measurements from soil

    Energy Technology Data Exchange (ETDEWEB)

    Lehmann, B.E. E-mail: lehmann@climate.unibe.ch; Ihly, B.; Salzmann, S.; Onen, F.; Simon, E

    2004-02-01

    A closed-circuit analytical system for the (quasi)-continuous measurement f radon fluxes from soil consisting of a static accumulation chamber and two radon detectors operated in series is described. The first detector measures he ({sup 220}Rn+{sup 222}Rn) activity, the second one the remaining {sup 222}Rn activity after the {sup 220}Rn atoms (half-life 56 s) have decayed when the air asses a delay volume between the two detectors. A step-motor driven cover loses the chamber at the beginning of a flux measurement interval of e.g. 3 . In between measurements the chamber remains open to maintain soil and vegetation inside the chamber as closely as possible to the conditions outside. A mathematical description of the temporal evolution of Rn activities in the analytical system is presented from which procedures are derived to calculate Rn fluxes (Bq m{sup -2} s{sup -1}) from the measured activities n the two detectors. Examples from field tests illustrate the performance of he experimental set-up and possible complications due to technical and/or environmental difficulties.

  18. Target size analysis by radiation inactivation: a large capacity tube rack for irradiation in a Gammacell 220.

    Science.gov (United States)

    Beauregard, G; Giroux, S; Potier, M

    1983-07-15

    Target size analysis by radiation inactivation is now a well-established method to study structure-function relationships in biologically active macromolecules without prior purification or even solubilization. Recently, it was reported that a relatively low-dose-rate but commonly available gamma source such as the Gammacell 220 (Atomic Energy of Canada, Ltd.) can be used to carry out radiation inactivation experiments providing it is appropriately calibrated with enzymes of known radiation sensitivities (G. Beauregard and M. Potier (1982) Anal. Biochem. 122, 379-384). In this report, a tube rack designed to fit into the irradiation chamber of the Gammacell 220 which allows five experiments (at 30 tubes per experiment) to be carried out simultaneously with both standard and unknown samples is described. The dose rates delivered at different positions in the rack were determined by irradiating rat liver cytosolic neuraminidase, an enzyme of known radiation sensitivity. A better than 2.7% agreement was obtained between experimental dose rate and computed values from isodose curves previously published by other authors (O. A. Curzio and H. O. Quaranta (1982) Int. J. Appl. Radiat. Isot. 33, 1-3).

  19. Measurements of Rn-222, Rn-220 and their decay products in the environmental air of the high background radiation areas in Yangjiang, China.

    Science.gov (United States)

    Yuan, Y; Morishima, H; Shen, T; Koga, T; Wei, L; Sugahara, T

    2000-10-01

    For the renewal of dose estimation from internal irradiation in the high background radiation areas (HBRA) of Yangjiang, the measurements of radon, thoron and their decay products in the environmental air were conducted, including: (1) integrating measurements of Rn-222 and Rn-220 concentrations; (2) eqilibrium factor F for Rn-222 and alpha-potential energy value of Rn-220; (3) external gamma radiation in places where radon measurements were undertaken; (4) cumulative exposure to indoor radon for each family in a case-control study on lung cancer. The Rn-Tn cup monitor method was used for the integrating measurement of Rn-222 and Rn-220 concentration. An alpha track detector was used for the integration measurement of Rn-222 concentration in the case-control study on lung cancer. The results of measurements show that although the investigated areas are located between the Equator and the Tropic of Cancer, and that people live in well-ventilated dwellings, the concentrations of radon, especially of Rn-220 are significantly higher in the indoor air of HBRA than those in the control area. The value of equilibrium factors for Rn-222, the alpha potential energy of decay products from Rn-222 and Rn-220 are determined.

  20. Measurements of Rn-222, Rn-220 and their decay products in the environmental air of the high background radiation areas in Yangjiang, China

    Energy Technology Data Exchange (ETDEWEB)

    Yuan Yongling; Shen Tong [Labor Hygiene Inst. of Human Province, Changsha (China); Morishima, Hiroshige; Koga, Taeko; Wei Luxin; Sugahara, Tsutomu

    2000-10-01

    For the renewal of dose estimation from internal irradiation in the high background radiation areas (HBRA) of Yangjiang, the measurements of radon, thoron and their decay products in the environmental air were conducted, including: integrating measurements of Rn-222 and Rn-220 concentrations; equilibrium factor F for Rn-222 and alpha-potential energy value of Rn-220; external gamma radiation in places where radon measurements were undertaken; cumulative exposure to indoor radon for each family in a case-control study on lung cancer. The Rn-Tn cup monitor method was used for the integrating measurement of Rn-222 and Rn-220 concentration. An alpha track detector was used for the integration measurement of Rn-222 concentration in the case-control study on lung cancer. The results of measurements show that although the investigated areas are located between the Equator and the Tropic of Cancer, and that people live in well-ventilated dwellings, the concentrations of radon, especially of Rn-220 are significantly higher in the indoor air of HBRA than those in the control area. The value of equilibrium factors for Rn-222, the alpha potential energy of decay products from Rn-222 and Rn-220 are determined. (author)

  1. 放射性气体220Rn的准确测量研究%Comparative study of the measurement of thoron gas

    Institute of Scientific and Technical Information of China (English)

    张磊; 梁珺成; 吴建; 郭秋菊

    2010-01-01

    220Rn的准确测量是天然辐射照射剂量评价体系中的重要研究内容之一.基于常用的几种测氡仪,我们开发了它们的220Rn测量功能,并比较了它们的220Rn测量结果.结果表明,AB5抓取式测量方法其原理简单,测量结果稳定,可以作为220Rn测量的参考方法,但其探测下限较高;RAD7的220Rn测量结果受干燥剂状态的影响,需要适时刻度;AlphaGuard流气式测量虽然具有探测下限低的优点,但结果易受采样流速和前端采样管路状况的影响,只能作一般性参考.

  2. 一起励磁涌流引起220 kV线路高频距离保护误动分析及对策%Analysis on the Inrush Current Caused by High Frequency 220kV Line Distance Protection Malfunction and Countermeasures

    Institute of Scientific and Technical Information of China (English)

    林幼萍

    2014-01-01

    文章就一起大容量变压器空充引起的励磁涌流造成220 kV线路保护误动进行分析,探讨了励磁涌流的各电气量特点,对220 kV高频距离保护方向判别进行分析,并提出相应的对策。%In this paper, together with the large-capacity transformer inrush current space charge field induced protection malfunction caused 220kV line were analyzed to explore the amount of inrush current of each electrical characteristics of high frequency distance protection 220kV direction discriminant analysis, and propose appropriate countermeasures.

  3. Características e desempenho agronômico no Paraná da cultivar de trigo BRS 220 Characteristics and agronomic performance in Paraná State of wheat cultivar BRS 220

    Directory of Open Access Journals (Sweden)

    Manoel Carlos Bassoi

    2005-02-01

    Full Text Available A cultivar BRS 220, indicada para todas as regiões tritícolas do Paraná, apresenta elevado potencial de rendimento, ampla adaptação e é dotada de força de glúten que a inclui na classe de trigo pão. É resistente às ferrugens e moderadamente resistente às manchas foliares, à brusone e ao vírus-do-mosaico. É moderadamente suscetível à giberela e ao oídio. Apresenta ciclo de precoce a médio, altura média de planta, boa resistência ao acamamento e moderada tolerância ao alumínio tóxico. É moderadamente tolerante à debulha e suscetível à germinação pré-colheita. Apresentou, nos cinco anos de experimentação, média de rendimento de grãos da ordem de 4.853 kg ha-1, na região 6, 3.794 kg ha-1, na região 7, e 4.039 kg ha-1, na região 8, superando a média das cultivares testemunhas em 5%, 13% e 8%, respectivamente.The cultivar BRS 220, recommended for all wheat growing regions in the Paraná State, has shown a high yield potential, wide adaptation and resistance to the main diseases, presenting a gluten suitable for baking. The cultivar belongs to medium maturity group and presents medium height, high resistance to lodging, moderate tolerance to toxic aluminium, moderate tolerance to natural dehiscence but it is susceptible to preharvest sprouting (PHS. In the experimentation over five years, BRS 220 presented a grain yield average of 4,853 kg ha-1 in the region 6, 3,794 kg ha-1 in the region 7 and 4,039 kg ha-1 in the region 8, surpassing 5%, 13% and 8% the average of the local cultivars, respectively.

  4. 抗菌肽HP(2-20)与POPE脂膜相互作用的分子学模拟%Molecular Dynamic Simulation on Interaction of Antimicrobial Peptide HP(2-20) and POPE Lipid Membrane

    Institute of Scientific and Technical Information of China (English)

    吴建华; 刘黎; 方颖; 黄庆生

    2012-01-01

    作为传统抗生素有力的候选者,抗菌肽是先天免疫体系中的重要组成成分.抗菌肽从起初的接触至随后稳定地吸附到细菌CC的质膜之上,是抗菌肽发挥其抗菌功能的关键初始事件.为揭示这一尚未明了的过程,文中使用分子动力学模拟方法,通过构建抗菌肽HP(2-20)与POPE脂双层的体系,模拟了HP(2-20)与POPE脂膜间的非特异相互作用.结果表明:抗菌肽的N端最先与脂膜接触,随后抗菌肽将维持一种倾斜的姿态,经历一个旋动插入脂膜的过程;同时,抗菌肽将束缚膜上与其邻近的磷脂分子的运动,导致膜的不均匀性,增强脂膜磷脂分子的无序波动,为其它自由的抗菌肽分子更深的插入提供了机会.%As one of the most likely substitutes for conventional antibiotics, antimicrobial peptides (AMPs) are ancient players in innate immunity. In the antimicrobial action of AMPs, an initial key event is that AMPs firstly contact with and then closely adhere to the bacterial membrane. In order to reveal this unknown process, a molecular dynamic (MD) simulation is performed to examine the nonspecific interaction of AMP HP(2-20) with the cell membrane, which is modeled by a POPE bilayer. The results show that the N-terminal of the peptide firstly contacts with the membrane, and then, companying with a rotation movement, the peptide slowly inclines toward and slightly inserts into the membrane; at the same time, the AMP limits the movements of the lipids adjacent to the peptide, which induces the membrane to become non-uniform and enhances the irregular fluctuation of the lipids, so that other peptides may find their chances of deeply inserting into the membrane.

  5. Scheme Design of 220 t/h Circulating Fluidized Bed Boiler using Slime and Refuse Mixture as Fuel in Nantun Power Plant%南屯电厂220 t/h循环流化床煤泥、煤矸石混烧锅炉的方案设计

    Institute of Scientific and Technical Information of China (English)

    徐秀国

    2001-01-01

    Research and development and boiler design feature of 220 t/h CFBus ing the slime and refuse mixture as fuel in Nantun power plant are introduced in this paper.%介绍了南屯电厂220t/h循环流化床煤泥、煤矸石混烧锅炉的开发研究,锅炉设计特点及各项指标规范。

  6. 基于PSCAD的220kV主变110kV侧单相短路时中性点接地方式分析%Analysis of Neutral Grounding Mood of 220kV transformer when 110kV Side Has Single-phase Short Circuit Based on PSCAD

    Institute of Scientific and Technical Information of China (English)

    杨亚奇; 袁钦鹏

    2013-01-01

    220kV主变中性点接地方式直接影响到电网的安全稳定运行,当220kV主变110kV侧发生单相接地短路时,合理的中性点接地方式可以避免主变遭受冲击而损坏。本文列举了220kV主变中性点四种接地方式,分析了220kV主变110kV侧发生单相短路时流过主变及故障点的短路电流的简化计算方法,并用PSCAD软件仿真并分析某110kV系统发生单相短路故障时不同中性点接地方式对流过主变及故障点短路电流大小的影响,最终给出最优接地方案。%The safety and stability of the grid could be directly affected by neutral grounding moods of 220kV transformer. Reasonably neutral grounding mood will protect the transformer from being damaged when single-phase short circuit occurs in 110kV side of 220kV transformer. This paper lists four neutral grounding moods of 220kV transformer and analysis how to simply calculate short-circuit current of main transformer and fault point when single-phase short circuit occurs in 110kV side of 220kV transformer. We use PSCAD to simulate and analysis the impact on the magnitude of short circuit of main transformer and failure point. At last we give the best neutral grounding mood.

  7. CG-220/100M3型低温过热器失效分析及对策%Failure Analysis on Furnace Tube of CG-220/100M3 Type Low Temperature Superheater and its Countermeasure

    Institute of Scientific and Technical Information of China (English)

    陈峰; 丛培振; 徐国良; 严飞

    2004-01-01

    分析了CG-220/100M3型低温过热器失效的原因,在进行材料的成分、力学性能、材料组织、电镜分析的同时,结合运行寿命分析,认为失效的主要原因是烟气通道堵灰严重,形成烟气短路,导致部分炉管超温,发生高温蠕变损伤,在应力的作用下,形成蠕变孔洞,进而形成裂纹,从而导致最终的爆裂失效.根据分析的结果,提出了预防措施.

  8. 头先露胎儿脐带绕颈220例临床分析%Clinical analysis on 220 cases of foetus of cephalic presentation umbilical cord around neck

    Institute of Scientific and Technical Information of China (English)

    梁小玲; 张莹

    2012-01-01

    目的 探讨头位胎儿脐带绕颈在分娩过程中对胎儿、新生儿的影响及分娩方式的选择.方法 回顾性分析头先露胎儿脐带绕颈220例足月妊娠产妇的临床资料,随机抽取220例头位分娩无胎儿脐带绕颈足月妊娠产妇为对照组,对两组产程及其分娩情况作对比观察.结果 观察组胎儿窘迫、新生儿窒息及剖宫产率分别为18.5%,8.6%,49.6%,明显高于对照组的5.4%,1.8%,26.4%(均P<0.05).脐带绕颈1周胎儿窘迫、新生儿窒息发生率为12.6%,1.4%;绕颈2周为27.1%,17.0%;绕颈3周及以上为69.2%,53.8%;脐带绕颈周数与胎儿窘迫、新生儿窒息发生率成正比.结论 加强产前B超检查和监护,重视脐带绕颈这一因素,选择适当分娩方式,可降低胎儿窘迫和新生儿窒息发生率,对产前B超诊断胎儿脐带绕颈3周及以上者应及早选择剖宫产分娩.%Objective To study the influences of fetal umbilical cord around neck on foetus、newborn infants and the choices of delivery mode during delivery.Methods 220 cases of cephalic delivery pregnant women with fetus who had fetal umbilical cord around neck symptom and 220 cases of cephalic delivery pregnant women with fetus who didn't have fetal umbilical cord around neck symptom,were selected to make a contrast observation.Results The foetus who had fetal umbilical cord around neck symptom had higher rate of fetal distress and neonatal asphyxia.The maternal cesarean section would be much higher,too.The rate is 18.5%,8.6%,49.6% which were higher than the foetus who didn't have such kind of symptom,the rate is 5.4%,1.8 %,26.4% ( all P < 0.05 ).The rate of fetal distress and neonatal asphyxia was proportional to the number of circles around neck.One circle around neck is 12.6%,1.4% ;two circles around neck is 27.1%,17.0% ;three and more than 3 circles around neck is 69.2%,53.8%.Conclusion We should enhance perinatal B-mode ultrasonic

  9. LCC model of 220 kV GIS equipments of Taihe substation and computation%泰和站220 kV GIS设备LCC模型和计算

    Institute of Scientific and Technical Information of China (English)

    滕乐天; 凌平; 黄玉; 姚明; 韩天祥

    2004-01-01

    介绍了泰和站220 kV GIS(gas insulated switchgear)的寿命周期成本(LCC)的模型和计算方法,对大修、技术改造和设备更新3个方案进行LCC的比较,引用了国际上的GIS故障统计数据用于故障成本的分析和讨论,并对多种因素进行了灵敏度分析计算,为上海电力系统开展LCC管理研究项目提供了一个参照样板,也为工程实际方案选择提供依据.

  10. AP1000堆型核电厂220 kV备用电源容量需求研究%Demand of 220 kV Reserve Power Capacity in AP 1000 Nuclear Power Plant

    Institute of Scientific and Technical Information of China (English)

    李明; 王喆

    2013-01-01

    AP1000堆型核电厂的220 kV备用电源的容量应能满足机组在各种设计运行工况下的厂用负荷供电要求.根据AP1000堆型核电机组的6种标准设计运行工况,分析了单台机组可能需要的最大备用电源容量,进而提出2台及4台机组共用备用电源情况下的最大容量的估算方法.

  11. Application of minimized GIS equipment in a 220kV indoor substation design optimization%小型化GIS设备在某220kV户内变电站优化设计中的应用

    Institute of Scientific and Technical Information of China (English)

    陈燕华

    2013-01-01

    本文根据户内变电站的建设特点,分析小型化GIS设备特点及优势,通过调研国内主要GIS设备生产厂家情况,推荐选用小型化GIS产品,使220 kV全户内变电站各配电装置布置更为合理,建筑物空间利用率得到进一步提高,变电站技术经济指标得到进一步优化,从而提高城市中心变电站建设水平.

  12. 宝能220kV GIS变电站雷电侵入波过电压的研究%Research on Lightning Intruding Waves in 220 kV Baoneng Gas Insulated Substation

    Institute of Scientific and Technical Information of China (English)

    刘青

    2008-01-01

    采用电磁暂态程序ATP-EMTP计算了宝钢220 kV GIS变电站进线落雷时GIS内断路器、隔离开关、母线以及出线套管和变压器上的雷电过电压,比较了不同落雷地点和运行方式下的雷电过电压,分析了金属氧化物避雷器(MOA)的防雷效果.研究表明,雷电过电压小于GIS内设备及变压器的雷电冲击绝缘水平,接线简单的运行方式雷电过电压最严重,现有MOA可以对设备进行有效保护.

  13. 一起220 kV GIS断路器放电故障分析与试验研究%Analysis and Experimental Research on Discharge Fault of 220 kV GIS Breaker

    Institute of Scientific and Technical Information of China (English)

    王流火; 林博楚; 吕鸿

    2015-01-01

    Due to large short-circuit energy and serious erosion of faulted equipments,it is unable to determine fault position and direct reasons when high voltage gas insulated metal enclosed switchgear and controlgear(GIS)happens large current short-circuit fault. In view of this,this paper analyzes and studies SF6 decomposition product of faulted GIS in some 220 kV substation and attachments on surface of faulted region by using energy disperse spectroscopy method. Combining disassem-bly return to depot and considering composition of breaker device,it analyzes reasons for causing the accident. Meanwhile, it studies impact on dielectric strength of GIS by ferruginous metallic particles and criticality of insulation deterioration in 220 kV GIS. The result indicates that the direct reason for the accident is ferruginous metallic particles in GIS breaker and the indirect reason is relax control on installation which makes GIS with defects. With the same voltage level,impact on die-lectric strength of GIS by metallic particles is more obvious,insulation deterioration is more severe and the GIS is liable to come up flashover.%高电压等级的气体绝缘金属封闭开关设备(gas insulated metal enclosed switchgear and controlgear,GIS)在发生大电流短路故障时,常常由于短路能量较大,故障设备烧蚀严重而无法确定故障位置和直接原因。针对此,采用扫描电子能谱(energy disperse spectroscopy,EDS)法对发生故障的220 kV某变电站 GIS 设备 SF6气体分解产物及故障区域表面附着物进行分析研究,结合返厂解体,同时考虑断路器设备原件的成分组成,分析了造成事故的原因。同时,在实体220 kV GIS内试验研究了铁质金属颗粒对 GIS绝缘强度的影响和绝缘劣化的危险程度。结果表明:GIS断路器内存在铁质金属异物是造成事故的直接原因,厂内安装控制不严造成的带缺陷出厂为间接原因;在同一电压等级下,金属异物越大对 GIS 的

  14. Constraining Gamma-Ray Emission from Luminous Infrared Galaxies with Fermi-LAT; Tentative Detection of Arp 220

    Science.gov (United States)

    Griffin, Rhiannon D.; Dai, Xinyu; Thompson, Todd A.

    2016-05-01

    Star-forming galaxies produce gamma-rays primarily via pion production, resulting from inelastic collisions between cosmic-ray protons and the interstellar medium (ISM). The dense ISM and high star formation rates of luminous and ultra-luminous infrared galaxies (LIRGs and ULIRGs) imply that they should be strong gamma-ray emitters, but so far only two LIRGs have been detected. Theoretical models for their emission depend on the unknown fraction of cosmic-ray protons that escape these galaxies before interacting. We analyze Fermi-LAT data for 82 of the brightest Infrared Astronomical Satellite LIRGs and ULIRGs. We examine each system individually and carry out a stacking analysis to constrain their gamma-ray fluxes. We report the detection of the nearest ULIRG Arp 220 (∼4.6σ). We observe a gamma-ray flux (0.8–100 GeV) of 2.4 × 10‑10 phot cm‑2 s‑1 with a photon index of 2.23 (8.2 × 1041 erg s‑1 at 77 Mpc). We also derive upper limits (ULs) for the stacked LIRGs and ULIRGs. The gamma-ray luminosity of Arp 220 and the stacked ULs agree with calorimetric predictions for dense star-forming galaxies. With the detection of Arp 220, we extend the gamma-ray–IR luminosity correlation to the high-luminosity regime with {log}{L}0.1-100{GeV}=1.25× {log}{L}8-1000μ {{m}}+26.7 as well as the gamma-ray–radio continuum luminosity correlation with {log}{L}0.1-100{GeV}=1.22× {log}{L}1.4{GHz}+13.3. The current survey of Fermi-LAT is on the verge of detecting more LIRGs/ULIRGs in the local universe, and we expect even more detections with deeper Fermi-LAT observations or the next generation of gamma-ray detectors.

  15. Production of actinium-225 for alpha particle mediated radioimmunotherapy.

    Science.gov (United States)

    Boll, Rose A; Malkemus, Dairin; Mirzadeh, Saed

    2005-05-01

    The initial clinical trials for treatment of acute myeloid leukemia have demonstrated the effectiveness of the alpha emitter (213)Bi in killing cancer cells. Bismuth-213 is obtained from a radionuclide generator system from decay of 10-days (225)Ac parent. Recent pre-clinical studies have also shown the potential application of both (213)Bi, and the (225)Ac parent radionuclide in a variety of cancer systems and targeted radiotherapy. This paper describes our five years of experience in production of (225)Ac in partial support of the on-going clinical trials. A four-step chemical process, consisting of both anion and cation exchange chromatography, is utilized for routine separation of carrier-free (225)Ac from a mixture of (228)Th, (229)Th and (232)Th. The separation of Ra and Ac from Th is achieved using the marcoporous anion exchange resin MP1 in 8M HNO(3) media. Two sequential MP1/NO(3) columns provide a separation factor of approximately 10(6) for Ra and Ac from Th. The separation of Ac from Ra is accomplished on a low cross-linking cation exchange resin AG50-X4 using 1.2M HNO(3) as eluant. Two sequential AG50/NO(3) columns provide a separation factor of approximately 10(2) for Ac from Ra. A 60-day processing schedule has been adopted in order to reduce the processing cost and to provide the highest levels of (225)Ac possible. Over an 8-week campaign, a total of approximately 100 mCi of (225)Ac (approximately 80% of the theoretical yield) is shipped in 5-6 batches, with the first batch typically consisting of approximately 50 mCi. After the initial separation and purification of Ac, the Ra pool is re-processed on a bi-weekly schedule or as needed to provide smaller batches of (225)Ac. The averaged radioisotopic purity of the (225)Ac was 99.6 +/- 0.7% with a (225)Ra content of < or =0.6%, and an average (229)Th content of (4(-4)(+5)) x 10(-5)%.

  16. Power Frequency Electric Field Reduction with Shielding Wires for Buildings near 220 kV Transmission Lines%用屏蔽线降低220kV线路附近建筑物的工频电场

    Institute of Scientific and Technical Information of China (English)

    汪逍晏; 许彬; 刘刚; 王凯

    2011-01-01

    This paper proposes a scheme to install shielding wires to suppress power frequency electric field of the buildings with a 220 kV transmission line overhead. At first, the electric field pollution was measured. Then by the finite-element method, the field intensity distribution 1.5 m above the balcony ground level was simulated and ana- lyzed in terms of different parameters including diameter, quantity, spacing and location of shielding wires, which produce different suppression effects on the electric field. The proposed method can be effective in practical electric field suppression projects.%介绍了对某220kV高压线跨越建筑物段架设屏蔽线来抑制工频电场的方案。首先,测量高压输电线路近区高层建筑物工频电场污染情况,然后,利用有限元法仿真分析通过架设不同屏蔽线丝径、屏蔽线根数、屏蔽线间距、屏蔽线位置时,距阳台地面1.5m处场强分布情况。研究不同参数屏蔽线对于工频电场的抑制效果,为抑制超标工频电场提供了一种有效的工程措施。

  17. 220kV 线路断路器SF6泄漏引起220kV失灵保护动作的事故分析

    Institute of Scientific and Technical Information of China (English)

    吴伟东

    2012-01-01

    SF6气体在断路器中主要起到绝缘、灭弧的作用,而且SF6必须在一定的密度下才能满足断路器的绝缘、灭弧的需要,当出现SF6气体泄漏时,为防止灭弧能力不足的断路器切断负荷或故障电流,会启动断路器的分闸闭锁继电器,使其串联在分闸回路上的辅助触点断开,从而达到闭锁断路器分闸的目的。然而当断路器的分闸闭锁信号出现时,线路保护范围内的故障无法通过线路断路器正常切除,从而使220kV失灵保护动作,引起故障的停电范围扩大。本文通过分析220kV线路断路器SF6泄漏引致220kV失灵保护动作的原理分析,针对事故的各种信号、现象进行分析,最终发现事故的原因并对故障进行处理。

  18. Evaluation of dose arising from 222Rn, decay products of 222Rn and 220Rn to staff from a certain nuclear power plant

    International Nuclear Information System (INIS)

    The staff of the plant was grouped on their work ranges. The annual effective dose resulted from radon and the decay products of 222Rn/220Rn is studied by measuring radon concentration with double filter membrane method and by measuring the concentration of 222Rn/220Rn short life radioactive decay products with five-count method. Based on the results, specific protection measures are proposed for high radon areas. The study results show that the monitoring data for all areas except the spent fuel pool was smaller than the recommended values by ICRP. (authors)

  19. Measurement of the Density of Base Fluids at Pressures 0.422 to 2.20 Gpa

    Science.gov (United States)

    Hamrock, B. J.; Jacobson, B. O.; Bergstroem, S. I.

    1985-01-01

    The influence of pressure on the density of six base fluids is experimentally studied for a range of pressures from 0.422 to 2.20 GPa. An important parameter used to describe the results is the change in relative volume with change in pressure dv sub r/dp. For pressures less than the solidification pressure (p ps) a small change in pressure results in a large change in dv sub r/ps. For pressures greater than the solidification pressure (p ps) there is no change in dv sub r/dp with changing pressure. The solidification pressures of the base fluids varies considerably, as do the slopes that the experimental data assumes for p ps. A new formula is developed that describes the effect of pressure on density in terms of four constants. These constants vary for the different base fluids tested.

  20. Hotline washing of insulators in 220 KV switchyard - a safety practice to carryout an extremely hazardous job

    International Nuclear Information System (INIS)

    Extent of Saline Pollution and Mechanism of Flash Over TAPS 1 and 2, 220 KV switchyard located in the proximity of east side of coastal bank of Arabian sea. During monsoon peak saline pollution occurs. The salt content in the air reaches a high value about, i.e. of 120 microgram/cu. Meter as compared to a value of 2 to 4 micrograms/cu meter during December to March. This salt content deposited on the petticoats of the insulators are termed as 'Pollutant'. As long as they are dry they do not pose any problem. When they are slightly moistened due to formation of dew or rain droplets, the pollutant start conducting. The leakage current for the conductor to the ground thus increases from the normal value. The leakage detection and safety precautions to be followed are discussed in the paper

  1. Fission barrier of superheavy nuclei and persistence of shell effects at high spin: cases of 254No and 220Th.

    Science.gov (United States)

    Henning, Greg; Khoo, T L; Lopez-Martens, A; Seweryniak, D; Alcorta, M; Asai, M; Back, B B; Bertone, P F; Boilley, D; Carpenter, M P; Chiara, C J; Chowdhury, P; Gall, B; Greenlees, P T; Gürdal, G; Hauschild, K; Heinz, A; Hoffman, C R; Janssens, R V F; Karpov, A V; Kay, B P; Kondev, F G; Lakshmi, S; Lauritsen, T; Lister, C J; McCutchan, E A; Nair, C; Piot, J; Potterveld, D; Reiter, P; Rogers, A M; Rowley, N; Zhu, S

    2014-12-31

    We report on the first measurement of the fission barrier height in a heavy shell-stabilized nucleus. The fission barrier height of 254No is measured to be Bf=6.0±0.5  MeV at spin 15ℏ and, by extrapolation, Bf=6.6±0.9  MeV at spin 0ℏ. This information is deduced from the measured distribution of entry points in the excitation energy versus spin plane. The same measurement is performed for 220Th and only a lower limit of the fission barrier height can be determined: Bf(I)>8  MeV. Comparisons with theoretical fission barriers test theories that predict properties of superheavy elements. PMID:25615317

  2. Quantum efficiency of cesium iodide photocathodes in the 120-220 nm spectral range traceable to a primary detector standard

    CERN Document Server

    Rabus, H; Richter, M; Ulm, G; Friese, J; Gernhäuser, R; Kastenmüller, A; Maier-Komor, P; Zeitelhack, K

    1999-01-01

    Differently prepared CsI samples have been investigated in the 120-220 nm spectral range for their quantum efficiency, spatial uniformity and the effect of radiation aging. The experiments were performed at the PTB radiometry laboratory at the Berlin synchrotron radiation facility BESSY. A calibrated GaAsP Schottky photodiode was used as transfer detector standard to establish traceability to the primary detector standard, because this type of photodiode - unlike silicon p-on-n photodiodes - proved to be of sufficiently stable response when exposed to vacuum ultraviolet radiation. The paper reviews the experimental procedures that were employed to characterize and calibrate the GaAsP photodiode and reports the results that were obtained on the investigated CsI photocathodes.

  3. Resonance raman spectroscopic study of alumina-supported vanadium oxide catalysts with 220 and 287 nm excitation.

    Energy Technology Data Exchange (ETDEWEB)

    Kim, H. S.; Stair, P. C.; Chemical Sciences and Engineering Division; Northwestern Univ.

    2009-01-01

    We present detailed resonance Raman spectroscopic results excited at 220 and 287 nm for alumina-supported VO{sub x} catalysts. The anharmonic constant, harmonic wavenumber, anharmonic force constant, bond dissociation energy, and bond length change in the excited state for double bonded V{double_bond}O and single bonded V-O were obtained from fundamental and overtone frequencies. Totally symmetric and nontotally symmetric modes could be discerned and assigned on the basis of the overtone and combination progressions found in the resonance Raman spectra. Selective resonance enhancement of two different vibrational modes with two different excitation wavelengths was observed. This allowed us to establish a linear relationship between charge transfer energy and VO bond length and, consequently, to assign the higher-energy charge transfer band centered around 210?250 nm in the UV?vis spectra to the V{double_bond}O transition.

  4. First electrons from the new 220 TW Frascati Laser for Acceleration and Multidisciplinary Experiments (FLAME) at Frascati National Laboratories (LNF)

    Energy Technology Data Exchange (ETDEWEB)

    Levato, T., E-mail: tadzio.levato@lnf.infn.it [Laboratori Nazionali di Frascati (LNF), INFN (Italy); Calvetti, M. [Laboratori Nazionali di Frascati (LNF), INFN (Italy); University of Florence, Department of Physics (Italy); Anelli, F. [Laboratori Nazionali di Frascati (LNF), INFN (Italy); Batani, D.; Benocci, R. [University of Milano Bicocca, Department of Physics (Italy); Cacciotti, L. [Laboratori Nazionali di Frascati (LNF), INFN (Italy); Cecchetti, C.A. [Intense Laser Irradiation Lab. (ILIL), Istituto Nazionale di Ottica (INO) - CNR, Pisa (Italy); INFN, Sect. of Pisa (Italy); Laboratori Nazionali di Frascati (LNF), INFN (Italy); Cerafogli, O.; Chimenti, P.; Clozza, A. [Laboratori Nazionali di Frascati (LNF), INFN (Italy); Drenska, N. [University of Roma La Sapienza (Italy); Laboratori Nazionali di Frascati (LNF), INFN (Italy); Esposito, A. [Laboratori Nazionali di Frascati (LNF), INFN (Italy); Faccini, R. [University of Roma La Sapienza (Italy); Laboratori Nazionali di Frascati (LNF), INFN (Italy); Fioravanti, S. [Laboratori Nazionali di Frascati (LNF), INFN (Italy); Gamucci, A. [Intense Laser Irradiation Lab. (ILIL), Istituto Nazionale di Ottica (INO) - CNR, Pisa (Italy); INFN, Sect. of Pisa (Italy); Laboratori Nazionali di Frascati (LNF), INFN (Italy); Gatti, C. [University of Roma La Sapienza (Italy); Laboratori Nazionali di Frascati (LNF), INFN (Italy); Giulietti, A. [Intense Laser Irradiation Lab. (ILIL), Istituto Nazionale di Ottica (INO) - CNR, Pisa (Italy); Giulietti, D. [University of Pisa, Department of Physics (Italy); Intense Laser Irradiation Lab. (ILIL), Istituto Nazionale di Ottica (INO) - CNR, Pisa (Italy); INFN, Sect. of Pisa (Italy); Laboratori Nazionali di Frascati (LNF), INFN (Italy); Labate, L. [Intense Laser Irradiation Lab. (ILIL), Istituto Nazionale di Ottica (INO) - CNR, Pisa (Italy); INFN, Sect. of Pisa (Italy); Laboratori Nazionali di Frascati (LNF), INFN (Italy); Lollo, V. [Laboratori Nazionali di Frascati (LNF), INFN (Italy); and others

    2013-08-21

    A new era of laser based plasma accelerators is emerging following the commissioning of many high power laser facilities around the world. Extremely short (tens of fs) laser pulses with energy of multi-joules level are available at these newly built facilities. Here we describe the new 220 TW FLAME facility. In particular we discuss the laser system general layout, the main measurements on the laser pulse parameters, the underground target area. Finally we give an overview of the first results of the Self-Injection Test Experiment (SITE), obtained at a low laser energy. This initial low laser energy experimental campaign was necessary for the validation of the radio-protection shielding (Esposito, 2011 [1]) we discuss here. With respect to our preliminary configuration, with a pulse duration of 30 fs and a focusing optic of F/15, we discuss here the minimum laser energy requirements for electron acceleration and the forward transmitted optical radiation.

  5. Mercury speciation and its emissions from a 220 MW pulverized coal-fired boiler power plant in flue gas

    Energy Technology Data Exchange (ETDEWEB)

    Yang, X.H.; Zhuo, Y.Q.; Duan, Y.F.; Chen, L.; Yang, L.G.; Zhang, L.A.; Jiang, Y.M.; Xu, X.C. [Southeast University, Nanjing (China). Thermoenergy Engineering Research Institute

    2007-07-15

    Distributions of mercury speciation of Hg{sup 0}, Hg{sup 2+} and Hg{sup P} in flue gas and fly ash were sampled by using the Ontario Hydro Method in a 220 MW pulverized coal-fired boiler power plant in China. The mercury speciation was varied greatly when flue gas going through the electrostatic precipitator (ESP). The mercury adsorbed on fly ashes was found strongly dependent on unburnt carbon content in fly ash and slightly on the particle sizes, which implies that the physical and chemical features of some elemental substances enriched to fly ash surface also have a non-ignored effect on the mercury adsorption. The concentration of chlorine in coal, oxygen and NOx in flue gas has a positive correlation with the formation of the oxidized mercury, but the sulfur in coal has a positive influence on the formation of elemental mercury.

  6. Spectral response of a silicon detector with 220 {mu}m pixel size bonded to MEDIPIX2

    Energy Technology Data Exchange (ETDEWEB)

    Froejdh, Erik, E-mail: erik.frojdh@miun.se [Department of Information Technology and Media, Mid-Sweden University, SE-85170 Sundsvall (Sweden); Froejdh, Anna; Norlin, Boerje; Froejdh, Christer [Department of Information Technology and Media, Mid-Sweden University, SE-85170 Sundsvall (Sweden)

    2011-05-15

    Pixellated radiation detectors with single photon processing can be used for spectral X-ray imaging. A problem using such detectors with small pixels is that the spectral information is distorted by charge sharing. In order to get images with good spectral resolution a number of silicon sensors with a pixel size of 220 {mu}m were fabricated and bonded to a MEDIPIX2 readout chip using only a limited number of pixels on the readout chip. The device was then used in an X-ray microscopy setup to obtain good spatial resolution as well. It is shown that spectral imaging can provide good contrast images of embedded structures by selecting an appropriate energy window.

  7. Efficient silicon heterojunction solar cells based on p- and n-type substrates processed at temperatures < 220 deg C

    Energy Technology Data Exchange (ETDEWEB)

    Maydell, K.v.; Conrad, E.; Schmidt, M. [Hahn-Meitner-Institut, Berlin (Germany)

    2006-07-01

    We present the optimization and characterization of heterojunction solar cells consisting of an amorphous silicon emitter, a single crystalline absorber and an amorphous silicon rear side which causes the formation of a back surface field (a-Si:H/c-Si/a-Si:H). The solar cells were processed at temperatures <220 deg C. An optimum of the gas phase doping concentration of the a-Si:H layers was found. For high gas phase doping concentrations, recombination via defects located at or nearby the interface leads to a decrease in solar cell efficiency. We achieved efficiencies >17% on p-type c-Si absorbers and >17.5% on n-type absorbers. In contrast to the approach of Sanyo, no additional intrinsic a-Si:H layers between the substrate and the doped a-Si:H layers were inserted. (Author)

  8. Application of egs4 computer code for determination of gamma ray spectrum and dose rate distribution in gammacell 220

    Science.gov (United States)

    Raisali, G. R.; Sohrabpour, M.

    1993-10-01

    The EGS4 a Monte Carlo electron-photon transport simulation package together with a locally developed computer program "GCELL" has been used to simulate the transport of the gamma rays in Gammacell 220. An additional lead attenuator has been inserted in the chamber, has been included for those cases where lower dose rates were required. For three cases of 0, 1.35 and 4.0 cm thickness of added lead attenuators, the gamma spectrum, and dose rate distribution inside the chamber have been determined. For the case of no attenuator present, the main shield around the source cage has been included in the simulation program and its albedo effects have been investigated. The calculated dose rate distribution in the Gammacell chamber has been compared against measurements carried out with Fricke, PMMA and Gafchromic film dosimeters.

  9. Primary investigation and study on 222Rn and 220Rn levels of underground coal mines in China

    International Nuclear Information System (INIS)

    From Dec. of 2002 to Aug. of 2004, by using Solid State Nuclear Track Detectors (SSNTDs), the 222Rn concentrations of 8 underground coal mines, i.e., Beijing Shijiaying, Beijing Fangshanchengguan, Shanxi Gujiaoxiqu, Shanxi Taiyuan Wangfang, Hunan Baifang, Hunan Songbai, Guizhou Honglin and Zhejiang Anrenjinjiang, Respectively, had been measured during a period of 12 months (once a three-month). The surveyed data showed that the annual average 222Rn concentrations (with number of measuring points) are 550(69), 3187(28), 45(224), 117(72), 88(79), 79(58), 40(72) and 136(116) Bq/m3, respectively. The 222Rn concentrations of underground coal mines vary with ventilation condition, geological structure and other factors, and the 222Rn concentration in the mine with bad ventilation is generally high, and varies with seasons i.e., higher in summer and autumn and lower in winter. The 222Rn concentration in mines with good ventilation is generally low and no notable variation with the season. These are also some characters of 222Rn levels in Chinese coal mines, such as the 222Rn concentrations in state-run coal mines are general low, but those in Beijing area are very high, and those in Zhejiang rock coal mines are not so high as expected, etc., the possible reasons have been discussed in the paper. The 220Rn levels of 4 coal mines in Beijing and Hunan were also measured, the ratios of alpha potential energy concentration of 220Rn daughters to that of 222Rn daughters are between 0.036 and 0.42. (authors)

  10. 220kV普光变电站35kV系统接地研究

    Institute of Scientific and Technical Information of China (English)

    张世文

    2011-01-01

    普光气田是我国最大的高含H2S气田,产能为10 5×108m3/年天然气,220kV普光变电站是保障普光气田的正常运行以及职工的正常生活用电的“心脏”.该站为四川电网内第一个主变压器35kV线圈采用三角形接线,第一个35kV中性点经中电阻接地、单相接地故障直接跳闸的配网系统.经过近3年的运行,系统运行良好,电网运行平稳,该系统的成功应用,对今后类似工程的设计将起到较好的借鉴作用.%Puguang gas field is the largest high gas field containing H2S, capacity for 105 x 108 m3 / year natural gas, 220 kV substations puguang puguang gas field is to ensure the normal operation of the normal Life of the worker and the "heart" of electricity. For sichuan power station in main transformer first 35 kV coil using triangle wiring, the first 35 kV neutral in the resistance grcunding, one-phase ground fault feeder of the distribution network system directly. After nearly three years of operation, the system is running well, power grid smooth operation, and successful application of the system, the design of similar projects in the future will play a good reference.

  11. Estimating Maximal Heart Rate with the ‘220-Age’ Formula in Adolescent Female Volleyball Players: A Preliminary Study

    Directory of Open Access Journals (Sweden)

    Nikolaidis Pantelis Theodoros

    2014-09-01

    Full Text Available Purpose. Although maximal heart rate (HRmax is used widely to assess exercise intensity in training, there are limited data with regards to the validity of age-based prediction equations of HRmax in volleyball players. Therefore, the aim of the present study was to compare the measured-HRmax of two prediction equations (Fox-HRmax = 220 − age and Tanaka-HRmax = 208 − 0.7 × age in young female volleyball players. Methods. The study involved 47 volleyball players (age 13.39 ± 2.01 years, body mass 54.0 ± 10.8 kg, height 162.7 ± 10.2 cm who performed a graded exercise field test (20 m shuttle run endurance test to assess HRmax. Measured-HRmax values were compared with the Fox and Tanaka prediction equations. Results. The results showed that mean scores for HRmax significantly differed between measured and predicted values (p < 0.001, ŋ2 = 0.49. Post-hoc tests revealed that Fox-HRmax overestimated measured-HRmax (mean difference 5.7 bpm; 95% CI [3.0, 8.5], whereas Tanaka-HRmax was similar to measured-HRmax (-2.2 bpm; 95% CI [-4.9, 0.4]. HRmax did not correlate with age (r = 0.16, p = 0.291. Conclusions. The results of this study failed to validate the widely used ‘220−age’ formula in volleyball players. Coaches and fitness trainers should take into account that the overestimation of HRmax by the Fox equation might lead to prescribing exercise at a higher intensity than what is targeted. Therefore, the Tanaka equation appears to offer a more accurate prediction equation of HRmax than the Fox equation in young female volleyball players.

  12. Removal of radon-220 from HTGR fuel reprocessing and refabrication off-gas streams by adsorption (based on a literature survey)

    International Nuclear Information System (INIS)

    Literature theory and data considered relevant to the removal of Rn-220 from HTGR fuel reprocessing and refabrication off-gas streams by adsorption are presented. The data include equilibrium adsorption coefficients for radon on activated carbon (charcoal) and silica gel in the presence of air and other gases, and for radon on molecular sieve Type 5A in the presence of air. Also included are a few dynamic adsorption data (adsorption coefficients and values for the number of theoretical plates per foot) for radon on charcoal, with air as the carrier gas. These various data, which were obtained mainly at or near 250C, are actually for Rn-222; however, they should also be applicable to Rn-220, provided the conditions are the same. Based on the available information, the radon adsorption coefficients decrease in the expected order: charcoal, molecular sieve Type 5A, and silica gel. Thus, charcoal should be the most effective of these adsorbents for Rn-220 removal; however, its use for this application cannot be recommended until the associated fire and explosion hazards, particularly those with regard to interaction with ozone, are resolved. Sorbent poisoning and particle penetration due to α-recoil are briefly treated. Adsorber design is discussed. Existing information appears adequate for sizing, albeit crudely, the sorbent bed for A Rn-220-charcoal-air (1-atm, less than 10 percent relative humidity) system, and a suggested approach for doing this is outlined. (U.S.)

  13. Inhalation exposures due to radon and thoron ((222)Rn and (220)Rn): Do they differ in high and normal background radiation areas in India?

    Science.gov (United States)

    Mishra, Rosaline; Sapra, B K; Prajith, R; Rout, R P; Jalaluddin, S; Mayya, Y S

    2015-09-01

    In India, High Background Radiation Areas (HBRAs) due to enhanced levels of naturally occurring radionuclides in soil (thorium and, to a lesser extent, uranium), are located along some parts of the coastal tracts viz. the coastal belt of Kerala, Tamilnadu and Odisha. It is conjectured that these deposits will result in higher emissions of radon isotopes ((222)Rn and (220)Rn) and their daughter products as compared to Normal Background Radiation Areas (NBRAs). While the annual external dose rates contributed by gamma radiations in these areas are about 5-10 times higher, the extent of increase in the inhalation dose rates attributable to (222)Rn and (220)Rn and their decay products is not well quantified. Towards this, systematic indoor surveys were conducted wherein simultaneous measurements of time integrated (222)Rn and (220)Rn gas and their decay product concentrations was carried out in around 800 houses in the HBRAs of Kerala and Odisha to estimate the inhalation doses. All gas measurements were carried out using pin-hole cup dosimeters while the progeny measurements were with samplers and systems based on the Direct radon/thoron Progeny sensors (DRPS/DTPS). To corroborate these passive measurements of decay products concentrations, active sampling was also carried out in a few houses. The results of the surveys provide a strong evidence to conclude that the inhalation doses due to (222)Rn and (220)Rn gas and their decay products in these HBRAs are in the same range as observed in the NBRAs in India. PMID:26065929

  14. THE FIRST DETECTION OF GeV EMISSION FROM AN ULTRALUMINOUS INFRARED GALAXY: Arp 220 AS SEEN WITH THE FERMI LARGE AREA TELESCOPE

    Energy Technology Data Exchange (ETDEWEB)

    Peng, Fang-Kun; Wang, Xiang-Yu [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China); Liu, Ruo-Yu [Max-Planck-Institut für Kernphysik, D-69117 Heidelberg (Germany); Tang, Qing-Wen [School of Science, Nanchang University, Nanchang 330031 (China); Wang, Jun-Feng, E-mail: xywang@nju.edu.cn [Department of Astronomy and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen, Fujian 361005 (China)

    2016-04-20

    Cosmic rays (CRs) in starburst galaxies produce high-energy gamma-rays by colliding with the dense interstellar medium. Arp 220 is the nearest ultraluminous infrared galaxy that has star formation at extreme levels, so it has long been predicted to emit high-energy gamma-rays. However, no evidence of gamma-ray emission was found despite intense search efforts. Here we report the discovery of high-energy gamma-ray emission above 200 MeV from Arp 220 at a confidence level of ∼6.3σ using 7.5 years of Fermi Large Area Telescope observations. The gamma-ray emission shows no significant variability over the observation period and it is consistent with the quasi-linear scaling relation between the gamma-ray luminosity and total infrared luminosity for star-forming galaxies, suggesting that these gamma-rays arise from CR interactions. As the high-density medium of Arp 220 makes it an ideal CR calorimeter, the gamma-ray luminosity can be used to measure the efficiency of powering CRs by supernova (SN) remnants given a known supernova rate in Arp 220. We find that this efficiency is about 4.2 ± 2.6% for CRs above 1 GeV.

  15. Herschel/PACS spectroscopy of NGC 4418 and Arp 220: H2O, H2^{18}O, OH, ^{18}OH, O^0, HCN and NH3

    CERN Document Server

    González-Alfonso, E; Graciá-Carpio, J; Sturm, E; Hailey-Dunsheath, S; Lutz, D; Poglitsch, A; Contursi, A; Feuchtgruber, H; Veilleux, S; Spoon, H W W; Verma, A; Christopher, N; Davies, R; Sternberg, A; Genzel, R; Tacconi, L

    2011-01-01

    Herschel/PACS spectroscopy of the (ultra)luminous infrared galaxies NGC 4418 and Arp 220 reveals high excitation in H2O, OH, HCN, and NH3. In NGC 4418, absorption lines were detected with E_lower>800 K (H2O), 600 K (OH), 1075 K (HCN), and 600 K (NH3), while in Arp 220 the excitation is somewhat lower. While clear outflow signatures are seen in Arp 220 as has been seen in previous studies, in NGC 4418 the lines tracing its outer regions are redshifted relative to the nucleus, suggesting an inflow with Mdot~100 K) nuclear continuum components, together with a more extended and colder component that is much more prominent and massive in Arp 220. A chemical dichotomy is found in both sources: on the one hand, the nuclear regions have high H2O abundances, ~0.5x10^{-5}, and high HCN/H2O and HCN/NH3 column density ratios of 0.2-0.7 and 6-9, respectively, indicating a chemistry typical of evolved hot cores where grain mantle evaporation has occurred. On the other hand, the high OH abundance, with OH/H2O ratios of ~0....

  16. 12 CFR 220.128 - Treatment of simultaneous long and short positions in the same margin account when put or call...

    Science.gov (United States)

    2010-01-01

    ... Board was recently asked whether under Regulation T, “Credit by Brokers and Dealers” (12 CFR part 220... position for this purpose (see also 17 CFR 240.3b-3). (e) Generally speaking, a customer makes a short sale... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Treatment of simultaneous long and...

  17. Validation of PET-SORTEO Monte Carlo simulations for the geometries of the MicroPET R4 and Focus 220 PET scanners

    Energy Technology Data Exchange (ETDEWEB)

    Lartizien, C [CREATIS Laboratory, UMR CNRS 5220, Inserm U630, INSA-Lyon, Universite Lyon 1, F69621 Villeurbanne (France); Kuntner, C [Department of Radiopharmaceuticals, Austrian Research Center GmbH-ARC, Seibersdorf (Austria); Goertzen, A L [McConnell Brain Imaging Centre, Montreal (Canada); Evans, A C [McConnell Brain Imaging Centre, Montreal (Canada); Reilhac, A [CERMEP, Bron (France)

    2007-08-21

    PET-SORTEO is a Monte Carlo-based simulator that enables the fast generation of realistic PET data for the geometry of the ECAT EXACT HR+ scanner. In order to address the increasing need for simulation models of animal PET imaging systems, our aim is to adapt and configure this simulation tool for small animal PET scanners, especially for the widely distributed microPET R4 and Focus 220 systems manufactured by Siemens Preclinical Solutions. We propose a simulation model that can produce realistic rodent images in order to evaluate and optimize acquisition and reconstruction protocols. The first part of this study presents the validation of SORTEO against the geometries of the R4 and the Focus 220 systems. This validation is carried out against actual measurements performed on the R4 scanner at the Montreal Neurological Institute in Canada and on the Focus 220 system of Department of radiopharmaceuticals of the Austrian Research Center in Seibersdorf. The comparison of simulated and experimental performance measurements includes spatial resolution, energy spectra, scatter fraction and count rates. In the second part of the study, we demonstrate the ability to rapidly generate realistic whole-body radioactive distributions using the MOBY phantom and give comparative example case studies of the same rodent model simulated with PET-SORTEO for the R4 and Focus 220 systems.

  18. Effect of clinical pathway on advanced schistosomiasis patients with acites:a report of 220 cases%220例腹水型晚期血吸虫病患者临床路径救治效果

    Institute of Scientific and Technical Information of China (English)

    廖红保

    2015-01-01

    目的:评价腹水型晚期血吸虫病(晚血)临床路径的救治效果。方法根据《血吸虫病防治手册》、《湖北省晚期血吸虫病临床路径》管理方案,分别采用传统路径和临床路径方法对洪湖市2013年和2014年各220例晚血患者进行治疗,比较患者平均住院日、疾病知晓率、患者满意度和平均费用等指标,分析临床路径管理在腹水型晚血病人治疗中的效果。结果采用临床路径治疗的患者在病情转归无明显差异的情况下,平均住院日由14 d下降到12 d,平均治疗费用由6400元下降到5800元,患者的疾病知晓率和满意度均提高到95%,与传统路径组相比,差异均具有统计学意义(P均<0.05)。结论采用临床路径治疗晚血能规范医疗行为,避免医疗资源的浪费,值得推广应用。%Objective To evaluate the effect of the clinical pathway on advanced schistosomiasis patients with acites. Meth⁃ods According to the Handbook of Schistosomiasis Control and the Clinical Pathway on Advanced Schistosomiasis in Hubei Province the therapeutic effects disease awareness and the satisfaction of patients of 220 advanced schistosomiasis patients ascitic type who were treated by the traditional pathway in 2013 and 220 patients who treated by the clinical pathway in 2014 respectively were evaluated and compared with the statistical method. Results As the outcomes of the patients had no signifi⁃cant difference between the traditional pathway therapy and the clinical pathway therapy the average hospitalization days and medical expense were reduced when the patients were treated by the clinical pathway. The average hospitalization days were re⁃duced to 12 days from 14 days. The average medical expense was reduced to RMB 5 800 form RMB 6 400. The average rate of awareness about the disease and the satisfaction rate of the patients were raised to 95% in the patients treated by the clinical pathway. The

  19. Whole body hyperthermia combined with chemotherapy in advanced malignant tumor-analysis of 220 patients%全身热疗联合化疗治疗晚期恶性肿瘤-220例疗效分析

    Institute of Scientific and Technical Information of China (English)

    郭俊召; 刘文超; 陈衍; 喻召才; 张红梅; 杨静悦; 薛妍

    2012-01-01

    Objective: To observe the effect and side effects of whole body hyperthermia combined with chemother-apy to treat patients with advanced malignant tumors. Methods: Total of 220 patients with advanced malignant tumor were treated by conventional chemotherapy combined with whole body hyperthermia. We used SRI WBH system,and the temperature was (40 ±0.5)℃. , lasting for 90-120 minutes, once per 3 weeks. Results: The short - term cura-tive effect; complete response (CR) in 3 cases (1. 36% ) .partial remission (PR) in 28 cases (12.73% ) , stable disease (SD) in 118 cases (53. 64% ) , disease progression in 71 patients (32. 27% ). The disease control rate (DCR) (CR + PR + SD) was 67. 73% . The majority of patients were improved for quality of life. Conclusion: Whole body hyperthermia combined with chemotherapy has good effect, and the sensitivities of different tumors on whole body hyperthermia remain to be confirmed by further studies.%目的:观察晚期恶性肿瘤患者全身热疗联合化疗的近期疗效与毒副反应.方法:220例晚期恶性肿瘤患者,采用常规化疗联合全身热疗,观察其疗效.全身热疗采用SRI全身热疗系统,温度40℃±0.5℃,持续90-120分钟,1次/3周.结果:近期疗效,完全缓解(CR)3例(1.36%),部分缓解(PR)28例(12.73%),疾病稳定(SD)118例(53.64%),疾病进展(PD)71例(32.27%),疾病控制率(CR+ PR+ SD) 67.73%.绝大多数患者自觉症状好转,生活质量提高.结论:全身热疗联合化疗近期疗效确切,不同肿瘤对全身热疗的敏感性还有待进一步研究证实.

  20. 肱骨外上髁炎痛点封闭治疗220例护理观察%Local corticosteroid injection for lateral humeral epicondylitis: Observation of 220 cases

    Institute of Scientific and Technical Information of China (English)

    吴俊; 徐建达; 胡素琴; 程秀红

    2011-01-01

    目的 肱骨外上髁炎是肘部软组织损伤常见的疾病,治疗上多以保守治疗为主,且方法多样,文中旨在观察肱骨外上髁炎痛点封闭治疗的临床疗效及护理指导.方法 从2009年12月至2010年3月期间对220例肱骨外上髁炎病例进行局部痛点封闭注射醋酸泼尼松,观察临床疗效.结果 96%患者获得回访并取得了满意疗效,优良率为96.0%,半年后复发者4例,1年后复发者2例,复发率为3%.结论 局部痛点封闭治疗肱骨外上髁炎疗效确切,可作为保守治疗肱骨外上髁炎的首选方法.%Objective Lateral humeral epicondylitis is a common disease of soft tissue injuries of the elbow, and generally treated by corticosteroid injection. The authors investigated the clinical effectiveness of local corticosteroid injection in the treatment of lateral humeral epicondylitis. Methods A total of 220 patients with lateral humeral epicondylitis were injected with prednisone acetate deep into the myofascial tissue of the tender spot of the lateral humeral epicondyle, and the clinical effectiveness was observed. Results Satisfactory results were achieved in 201 of the patients, with an excellence rate of 96.0%. Occurrence was found in 4 cases 6 months later and in 2 cases 12 months later, with an occurrence rate of 3.0%. Conclusion Local corticosteroid injection is a pre ferable option for the treatment of lateral humeral epicondylitis.

  1. 湖南电网220kV线路直流融冰问题研究%Study on problem of DC ice-melting of the Hunan 220 kV power grid

    Institute of Scientific and Technical Information of China (English)

    阮启运; 顾雪平; 陆佳政; 张红先

    2011-01-01

    分析了线路融冰顺序、电源点选择以及短路点选择三个融冰线路问题,根据其解决方法和模拟现场参数利用Matlab搭建仿真模型计算线路融冰电流,并选择性加入谐波抑制电抗控制谐波畸变率.利用VFP开发了一套存储查询线路电气参数以及计算融冰时间的防冻融冰管理系统,并根据其计算结果分析了融冰时间与覆冰厚度、融冰电流、风速、气温之间的关系.在娄底220 kV田上线上,采用移动式直流融冰装置,搭建仿真模型计算融冰电流和分析其谐波影响,并通过管理系统计算融冰时间,计算结果与现场融冰的结果基本吻合.%The paper analyzes three line ice-melting problems, including the line sequence of melting ice, power point selection, and short-circuit point selection.According to the solving methods and the simulated parameters, the simulation models to calculate the ice-melting current are built on Matlab, and harmonic suppression reactance is added selectively to contol harmonic distortion.VFP is used to develop a management system of anti-freezing and ice-melting, which can store and inquire line electrical parameters and calculate ice-melting time.Based on the calculating results, the relations between the ice-melting time and the ice thickness, ice-melting current, the wind speed, and the temperature are analyzed.The moving DC ice-melting device is used on 220 kV Tian-Shang line in Loudi.By building simulation models, the ice-melting current is obtained and the harmonics' influence is analyzed, then the ice-melting time is computed by the management system.It's shown that the calculation results basically accord with the results on the spot.

  2. Design Discussion of the Double-bus and Subsection Breaker Electrical Connection Applied in 220 kV Substation GIS%220kV变电站GIS配电装置双母线刀闸分段设计探讨

    Institute of Scientific and Technical Information of China (English)

    王文莉; 李颖瑾; 马悦

    2011-01-01

    近年来,220kV变电站中高压配电装置采用GIS设备越来越普遍,根据变电站的规模,220kV、110kVGIS接线型式为双母线时,扩建时变电站全部停电的缺点逐渐暴露。通过实例技术经济比较,提出220kV变电站GIS双母线接线优化为双母线刀闸分段接线的优化方案。该方案的提出.有效地避免了目前变电站扩建时需全站停电的问题。%In recent years, Gas Insulated Metal-enclosed Switchgear are applied more popularly at the 220 kV substation. However, the 220 kV substation site-wide blackout will happen during the period of the substation extension and reconstruction, with the double-bus electrical connection applied. Depending on the practical project and based on the technical-economical comparison, the optimized design scheme with the double-bus and Subsection breaker electrical connection applied, is proposed. With this scheme, the substation site-wide blackout can be avoided.

  3. 220 kV 输电线路防绕击侧针防护效果研究

    Institute of Scientific and Technical Information of China (English)

    张仕名; 张先怡; 许安; 崔涛; 陈平; 李昆; 李晓东; 江来; 李振华

    2013-01-01

    雷击是高压及超高压输电线路的主要事故之一,反击跳闸发生的概率很低,绕击是发生故障跳闸的主要原因。可以在地线上架设水平侧向短针的分布式绕击防治措施以有效提高地线引雷能力,防止绕击跳闸。以西昌220 kV输电线路N148号杆塔为例,分析并比较了杆塔附近地线上安装防绕击侧针前后,线路绕击率、绕击跳闸率以及绕击雷电流幅值的变化情况。通过实例计算发现,防绕击侧针安装以后明显改善了线路的防绕击能力,可见安装防绕击侧针作为输电线路的防雷改造措施,具有较好的实用性。%Lightning stroke is one of the major accidents in HV and EHV transmission lines .The trip-out accidents are main-ly caused by shielding failure and rarely caused by back flashover .In order to prevent the trip-out by shielding failure , the lightning rod against shielding failure can be installed on the lightning conductor that can improve the triggered lightning capac -ity of the ground wires .Taking N148 tower in 220 kV transmission line of Xichang for example , the differences of shielding failure rate, shielding failure trip-out rate and shielding failure lightning peak current of the transmission line which has in -stalled the lightning rod against shielding failure near N 148 tower are analyzed .With the help of calculation analysis , it is found that after installing the lightning rod against shielding failure , the ability against shielding failure of transmission lines has been improved obviously .Therefore, it is in high practicality to use lightning rod against shielding failure as the improve-ment measures of the protection against lighting in transmission lines .

  4. Water-mediated and instantaneous transfer of graphene grown at 220 °C enabled by a plasma

    Science.gov (United States)

    van der Laan, Timothy; Kumar, Shailesh; Ostrikov, Kostya (Ken)

    2015-12-01

    Atomically thin graphene holds exceptional promise to enable new functionalities and drastically improve performance of electronic, energy, sensing, and bio-medical devices. One of the most promising approaches to device-compatible graphene synthesis is chemical vapour deposition on a copper catalyst; this technique however is limited by very high temperatures (~900 °C) and a lack of control as well as post-growth separation from the catalyst. We demonstrate and explain how, through the use of a plasma, a graphene film containing single layer graphene can be grown at temperature as low as 220 °C, the process can be controlled and an instant and water-mediated decoupling mechanism is realised. Potential use of our films in flexible transparent conductive films, electrical devices and magneto-electronics is demonstrated. Considering the benefits of catalyst reuse, energy efficiency, simplicity, and environmental friendliness, we present this versatile plasma process as a viable alternative to many existing graphene production approaches.Atomically thin graphene holds exceptional promise to enable new functionalities and drastically improve performance of electronic, energy, sensing, and bio-medical devices. One of the most promising approaches to device-compatible graphene synthesis is chemical vapour deposition on a copper catalyst; this technique however is limited by very high temperatures (~900 °C) and a lack of control as well as post-growth separation from the catalyst. We demonstrate and explain how, through the use of a plasma, a graphene film containing single layer graphene can be grown at temperature as low as 220 °C, the process can be controlled and an instant and water-mediated decoupling mechanism is realised. Potential use of our films in flexible transparent conductive films, electrical devices and magneto-electronics is demonstrated. Considering the benefits of catalyst reuse, energy efficiency, simplicity, and environmental friendliness, we

  5. 220 kV金属氧化物避雷器不拆线试验方法及误差分析%Test on 220 kV Metal Oxide Arrester without Removing Connecting Lead and Its Error Evaluation

    Institute of Scientific and Technical Information of China (English)

    万四维; 李顺尧

    2006-01-01

    介绍了220 kV金属氧化物避雷器不拆除一次高压引线的试验方法,并对试验方法进行了误差分析,与常规试验方法进行了比较.结果表明,直流发生器的输出电流应选择大于3 mA;试验前应对避雷器表面进行清洁,空气湿度大时,还应对避雷器表面进行屏蔽试验;试验时,应尽可能缩短高压引线的长度,并考虑引线与被试品的角度等;MOA底座绝缘电阻值应尽量大,可减少测量误差,得出不拆线试验方法是可行的.

  6. 多瑞吉治疗晚期癌症疼痛患者220例疗效观察%Observation of Therapeutic Efficacy of Durogesic on advanced Cancer Pain in 220 Patients

    Institute of Scientific and Technical Information of China (English)

    谢恬

    2012-01-01

    目的 观察多瑞吉(芬太尼透皮贴剂)治疗晚期癌性疼痛的镇痛疗效及不良反应.方法 以芬太尼透皮贴剂治疗220例中重度晚期癌痛患者,疼痛性质为慢性、持续性疼痛,初始剂量为25μg/h,贴膜每3日更换1次,如3天内出现暴发性疼痛用即释吗啡控制,3天后根据疼痛情况进行剂量调整.结果 全组完全缓解25例(11.3%),明显缓解158例(71.8%),总有效率为83.1%.不良反应主要为便秘、恶心呕吐、皮肤瘙痒及嗜睡等,发生率低.结论 多瑞吉治疗中重度癌性疼痛疗效确切,使用方便,副作用轻,能提高疼痛患者生活质量.

  7. EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF); Scientific Opinion on Flavouring Group Evaluation 220, Revision 1 (FGE.220Rev1): alpha,beta-Unsaturated ketones and precursors from chemical subgroup 4.4 of FGE.19: 3(2H)-Furanones

    DEFF Research Database (Denmark)

    Larsen, John Christian; Nørby, Karin Kristiane; Beltoft, Vibe Meister;

    to the requested genotoxicity data in FGE.220 on the representative substance for subgroup 4.4b, 4-hydroxy-2,5-dimethylfuran-3(2H)-one [FL-no: 13.010]. Flavouring Group Evaluation 220 (FGE.220) concerns 10 substances, corresponding to subgroup 4.4 of FGE.19. The 10 substances are alpha,beta-unsaturated 3(2H...... that the representative substance for subgroup 4.4b, 4-hydroxy-2,5-dimethylfuran-3(2H)-one [FL-no: 13.010], is unable to induce adverse effects both on male rat reproductive capacity and dominant lethality. On this basis, the Panel concludes that there is no concern for this substance to induce heritable genetic damage...

  8. CCPR-S1 Supplementary comparison for spectral radiance in the range of 220 nm to 2500 nm

    Science.gov (United States)

    Khlevnoy, Boris; Sapritsky, Victor; Rougie, Bernard; Gibson, Charles; Yoon, Howard; Gaertner, Arnold; Taubert, Dieter; Hartmann, Juergen

    2009-08-01

    In 1997, the Consultative Committee for Photometry and Radiometry (CCPR) initiated a supplementary comparison of spectral radiance in the wavelength range from 220 nm to 2500 nm (CCPR-S1) using tungsten strip-filament lamps as transfer standards. Five national metrology institutes (NMIs) took part in the comparison: BNM/INM (France), NIST (USA), NRC (Canada), PTB (Germany) and VNIIOFI (Russia), with VNIIOFI as the pilot laboratory. Each NMI provided the transfer lamps that were used to transfer their measurements to the pilot laboratory. The intercomparison sequence began with the participant measurements, then the pilot measurements, followed by a second set of measurements by the participant laboratory. The measurements were carried out from 1998 to 2002, with the final report completed in 2008. This paper presents the descriptions of measurement facilities and uncertainties of the participants, as well as the comparison results that were analysed in accordance with the Guidelines for CCPR Comparisons Report Preparation, and a re-evaluation of the results taking into account the instability of some of the transfer lamps. Excluding a few wavelengths, all participants agree with each other within ±1.5%. The disagreement decreases to approximately ±1.0% when the anomalous data are excluded from the analysis.

  9. Mutational analysis of the Sonic Hedgehog gene in 220 newborns with oral clefts in a South American (ECLAMC) population.

    Science.gov (United States)

    Orioli, Iêda M; Vieira, Alexandre R; Castilla, Eduardo E; Ming, Jeffrey E; Muenke, Maximilian

    2002-02-15

    Oral clefts generally have a multifactorial etiology. A number of genes contribute to the formation of the face and palate. Cleft lip and/or palate can occur in pedigrees with autosomal dominant holoprosencephaly due to mutations in Sonic Hedgehog (SHH). In addition, animal models have shown that SHH is involved in face development. We thus examined the human SHH gene in 220 newborn infants with nonsyndromic oral clefts registered by the Estudio Colaborativo Latinoamericano de Malformaciones Congenitas: ECLAMC (Latin American Collaborative Study of Congenital Malformations). We found 15 variant bands in 13 patients with oral clefts, representing five different base changes, all of which were found by sequencing to represent silent polymorphisms. Four occurred in introns. The alteration occurring in an exon, Ser190Ser, may create a consensus sequence for the 3'splice site 6 bp downstream of the original consensus sequence. Thus, we did not identify any clearly disease-causing mutation in SHH in these patients, and conclude that SHH mutations are not a frequent cause of isolated oral clefts in humans.

  10. Derivation of V function for LR 115 SSNTD from its sensitivity to {sup 220}Rn in a diffusion chamber

    Energy Technology Data Exchange (ETDEWEB)

    Leung, S.Y.Y. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong (China); Nikezic, D. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong (China); Leung, J.K.C. [Department of Physics, University of Hong Kong, Pokfulam Road, Hong Kong (China); Yu, K.N. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong (China)]. E-mail: peter.yu@cityu.edu.hk

    2007-03-15

    The sensitivity of the LR 115 detector inside a diffusion chamber to {sup 220}Rn gas concentration is dependent on the removed active layer thickness during chemical etching. This dependence is related to the V function for the LR 115 detector (where V is the ratio between the track etch velocity V{sub t} and the bulk etch velocity V{sub b}) and the geometry of the diffusion chamber. The present paper presents the experimentally determined relationship between the sensitivity of the LR 115 detector inside a Karlsruhe diffusion chamber (determined from the number of etched tracks completely penetrating the active cellulose nitrate layer) and the removed active layer thickness. These data were used to derive the V function for the LR 115 detector, which took the functional form of the Durrani-Green's function, i.e., V=1+(a{sub 1}e{sup -a}{sup 2}{sup R}+a{sub 3}e{sup -a}{sup 4}{sup R})(1-e{sup -a}{sup 5}{sup R}), with the best-fitted constants as a{sub 1}=14.50, a{sub 2}=0.50, a{sub 3}=3.9 and a{sub 4}=0.066.

  11. Measurement of charged particle yields from PMMA irradiated by a 220 MeV/u12Cbeam

    CERN Document Server

    Piersanti, L; Bini, FU. Rome La Sapienza (main); Collamati, F; De Lucia, E; Durante, M; Faccini, R; Ferroni, F; Fiore, S; Iarocci, E; La Tessa, C; Marafini, M; Mattei, I; Patera, V; Ortega, P G; Sarti, A; Schuy, C; Sciubba, A; Vanstalle, M; Voena, C

    2014-01-01

    The radiation used in hadrontherapy treatments interacts with the patient body producing secondary particles, either neutral or charged, that can be used for dose and Bragg peak monitoring and to provide a fast feedback on the treatment plans. Recent results obtained from the authors on simplified setups (mono-energetic primary beams interacting with homogeneous tissue like target) have already indicated the correlation that exists between the flux of these secondaries coming from the target (e.g. protons and photons) and the position of the primary beam Bragg peak. In this paper, the measurements of charged particle fluxes produced by the interaction of a 220 MeV/u carbon ion beam at GSI, Darmstadt, with a polymethyl methacrylate target are reported. The emission region of protons (p), deuterons (d) and tritons (t) has been characterized using a drift chamber while the particle time-of-flight, used to compute the kinetic energy spectra, was measured with a LYSO scintillator.The energy released in the LYSO cr...

  12. Observation of {sup 222}Rn progeny-and {sup 220}Rn progeny-loaded aerosols by atomic force microscopy

    Energy Technology Data Exchange (ETDEWEB)

    Leung, J.K.C.; Tso, M.Y.W.; Lam, J.H.C. [The Univ., of Hong Kong, Hong Kong (China); Zhau, Q.F. [Ministry of Health, Beijing (China)

    2002-07-01

    Atomic force microscopy is becoming a powerful tool for the study of nuclear tracks in materials such as CR-39. Coupled with its capability of observing near nm aerosol particles, we have utilized the AFM to observe the radon progeny-loaded aerosol particles deposited on surfaces of CR-39 and to observe the corresponding etch pits produced by the {alpha} -particles emitted from the radon progenies. A special platform was built so that after the aerosol particles on the CR-39 have been scanned and recorded, the CR-39 can be etched and then scanned for the etch pits at the same location. Both {sup 222}Rn and {sup 220}Rn progenies were used in the study. The progenies were generated by the appropriate radon sources and mixed with aerosol particles generated by aerosol generators. The aerosol size distributions were analyzed by a scanning mobility particle sizer. Some of the limitations and difficulties of the technique will be described. The results enable us to examine the attachment process including multiple attachments of radon progenies on aerosols.

  13. Dynamics, deterministic nature and correlations of outdoor {sup 222}Rn and {sup 220}Rn progeny concentrations measured at Bacau, Romania

    Energy Technology Data Exchange (ETDEWEB)

    Cuculeanu, Vasile, E-mail: cuculeanu@gmail.com [Faculty of Physics, University of Bucharest, Magurele, RO-077125 Bucharest (Romania); Simion, Florin [Faculty of Physics, University of Bucharest, Magurele, RO-077125 Bucharest (Romania); National Environmental Protection Agency, Radioactivity Laboratory, Splaiul Independentei 294, RO-060031 Bucharest (Romania); Simion, Elena [National Environmental Protection Agency, Radioactivity Laboratory, Splaiul Independentei 294, RO-060031 Bucharest (Romania); Geicu, Anton [National Administration of Meteorology, Bucharest (Romania)

    2011-07-15

    The long-term variation, nature and correlations of outdoor {sup 222}Rn and {sup 220}Rn progeny concentrations measured during the period 1994-2009 were investigated. The time series of data were obtained within the framework of the monitoring program performed by the Environmental Radioactivity Monitoring Station (ERMS) Bacau, a component part of the National Environmental Radioactivity Survey Network (NERSN), coordinated by National Environmental Protection Agency (NEPA). The measuring method is based on the total beta measurements of atmospheric aerosol filters, using a low background total beta counter and ({sup 90}Sr/Y) reference standard. Analysis of the time series of progeny concentrations in the low atmosphere makes evident different patterns of variation of these concentrations: diurnal, seasonal and annual. A possible relationship of progeny concentration increase with global warming is emphasized. In order to find the dominant frequency of the physical processes determining progeny concentration variability the power spectrum has been used. The deterministic nature of the time series of concentrations has been studied making use of the autocorrelation function and stationarity of the original data and of their phase randomized time series. Also, the correlations with meteorological parameters have been investigated using Pearson's correlation coefficient with corresponding level of significance. - Highlights: > Radon and thoron progeny concentrations measured on a period of 16 years. > 5 h, daily, monthly and annual patterns are pointed out. > Autocorrelation functions prove non-randomness of concentrations. > Deterministic nature of time series of concentrations is demonstrated. > Correlations with meteorological data are studied.

  14. Entrance channel effects on the evaporation residue yields in reactions leading to the $^{220}$Th compound nucleus

    CERN Document Server

    Kim, Kyungil; Mandaglio, Giuseppe; Giardina, Giorgio; Kim, Youngman

    2014-01-01

    The evaporation residue yields from compound nuclei $^{220}$Th formed in the $^{16}$O+$^{204}$Pb, $^{40}$Ar+$^{180}$Hf, $^{82}$Se+$^{138}$Ba, $^{124}$Sn+$^{96}$Zr reactions are analyzed to study the entrance channel effects by comparison of the capture, fusion and evaporation residue cross sections calculated by the combined dinuclear system (DNS) and advanced statistical models. The difference between evaporation residue (ER) cross sections can be related to the stages of compound nucleus formation or/and at its surviving against fission. The sensitivity of the both stages in the evolution of DNS up to the evaporation residue formation to the angular momentum of DNS is studied. The difference between fusion excitation functions are explained by the hindrance to complete fusion due to the larger intrinsic fusion barrier $B^*_{\\rm fus}$ for the transformation of the DNS into a compound nucleus and the increase of the quasifission contribution due to the decreasing of quasifission barrier $B_{\\rm qf}$ as a func...

  15. The dose distribution inside the irradiation chamber of the gamma cell 220 at KACST using MCNP4B

    Energy Technology Data Exchange (ETDEWEB)

    Hefne, Jameel [King Abdulaziz City for Science and Technology, Riyadh (Saudi Arabia)

    2000-03-01

    In the irradiation chamber of gamma cell-220 at KACST the dose distribution must be determined. The determination of this dose distribution gives an idea about the amount of the dose in any place inside the irradiation chamber which helps also to find the average dose given to any object that needs to be irradiated. The Monte Carlo N Particle code (MCNP4B) was used to estimate the dose distribution inside the irradiation chamber. Point detectors were used in this simulation. The code was run for sufficient numbers of history which shows a symmetrical distribution around the axis of the irradiation chamber, and the errors is less than 5%. The dose map shows that the dose increases as it is calculated from the center of the chamber to the chamber perimeter edge, and it decreases as moving to the top or the bottom of the chamber. The calculation was compared with a measurement, which was done by Dr. Abdelrehim. A good agreement between the calculation and the measurement was obtained. (author)

  16. Morphology and Kinematics of Warm Molecular Gas in the Nuclear Region of Arp 220 as Revealed by ALMA

    CERN Document Server

    Rangwala, Naseem; Wilson, Christine; Glenn, Jason; Kamenetzky, Julia; Spinoglio, Luigi

    2015-01-01

    We present Atacama Large Millimeter Array (ALMA) Cycle-0 observations of the CO J = 6-5 line in the advanced galaxy merger Arp 220. This line traces warm molecular gas, which dominates the total CO luminosity. The CO emission from the two nuclei is well resolved by the 0.39" x 0.22" beam and the exceptional sensitivity and spatial/spectral resolution reveal new complex features in the morphology and kinematics of the warm gas. The line profiles are asymmetric between the red and blue sides of the nuclear disks and the peak of the line emission is offset from the peak of the continuum emission in both nuclei by about 100 pc in the same direction. CO self-absorption is detected at the centers of both nuclei but it is much deeper in the eastern nucleus. We also clearly detect strong, highly redshifted CO absorption located near the southwest side of each nucleus. For the eastern nucleus, we reproduce the major line profile features with a simple kinematic model of a highly turbulent, rotating disk with a substan...

  17. SMA CO(J=6-5) and 435 micron interferometric imaging of the nuclear region of Arp 220

    CERN Document Server

    Matsushita, Satoki; Petitpas, Glen R; Chou, Richard C -Y; Gurwell, Mark A; Hunter, Todd R; Lim, Jeremy; Muller, Sebastien; Peck, Alison B; Sakamoto, Kazushi; Sawada-Satoh, Satoko; Wiedner, Martina C; Wilner, David J; Wilson, Christine D

    2008-01-01

    We have used the Submillimeter Array (SMA) to make the first interferometric observations (beam size ~1") of the 12CO J=6-5 line and 435 micron (690 GHz) continuum emission toward the central region of the nearby ULIRG Arp 220. These observations resolve the eastern and western nuclei from each other, in both the molecular line and dust continuum emission. At 435 micron, the peak intensity of the western nucleus is stronger than the eastern nucleus, and the difference in peak intensities is less than at longer wavelengths. Fitting a simple model to the dust emission observed between 1.3 mm and 435 micron suggests that dust emissivity power law index in the western nucleus is near unity and steeper in the eastern nucleus, about 2, and that the dust emission is optically thick at the shorter wavelength. Comparison with single dish measurements indicate that the interferometer observations are missing ~60% of the dust emission, most likely from a spatially extended component to which these observations are not s...

  18. Subarcsecond international LOFAR radio images of Arp 220 at 150 MHz. A kpc-scale star forming disk surrounding nuclei with shocked outflows

    Science.gov (United States)

    Varenius, E.; Conway, J. E.; Martí-Vidal, I.; Aalto, S.; Barcos-Muñoz, L.; König, S.; Pérez-Torres, M. A.; Deller, A. T.; Moldón, J.; Gallagher, J. S.; Yoast-Hull, T. M.; Horellou, C.; Morabito, L. K.; Alberdi, A.; Jackson, N.; Beswick, R.; Carozzi, T. D.; Wucknitz, O.; Ramírez-Olivencia, N.

    2016-09-01

    Context. Arp 220 is the prototypical ultra luminous infrared galaxy (ULIRG). Despite extensive studies, the structure at MHz-frequencies has remained unknown because of limits in spatial resolution. Aims: This work aims to constrain the flux and shape of radio emission from Arp 220 at MHz frequencies. Methods: We analyse new observations with the International Low Frequency Array (LOFAR) telescope, and archival data from the Multi-Element Radio Linked Interferometer Network (MERLIN) and the Karl G. Jansky Very Large Array (VLA). We model the spatially resolved radio spectrum of Arp 220 from 150 MHz to 33 GHz. Results: We present an image of Arp 220 at 150 MHz with resolution 0.̋65 × 0.̋35, sensitivity 0.15 mJy beam-1, and integrated flux density 394 ± 59 mJy. More than 80% of the detected flux comes from extended (6''≈ 2.2 kpc) steep spectrum (α = -0.7) emission, likely from star formation in the molecular disk surrounding the two nuclei. We find elongated features extending 0.3'' (110 pc) and 0.9'' (330 pc) from the eastern and western nucleus respectively, which we interpret as evidence for outflows. The extent of radio emission requires acceleration of cosmic rays far outside the nuclei. We find that a simple three component model can explain most of the observed radio spectrum of the galaxy. When accounting for absorption at 1.4 GHz, Arp 220 follows the FIR/radio correlation with q = 2.36, and we estimate a star formation rate of 220 M⊙ yr-1. We derive thermal fractions at 1 GHz of less than 1% for the nuclei, which indicates that a major part of the UV-photons are absorbed by dust. Conclusions: International LOFAR observations shows great promise to detect steep spectrum outflows and probe regions of thermal absorption. However, in LIRGs the emission detected at 150 MHz does not necessarily come from the main regions of star formation. This implies that high spatial resolution is crucial for accurate estimates of star formation rates for such galaxies

  19. Monomeric 55-kDa guanidinobenzoatase switches to a serine proteinase activity upon tetramerization. Tetrameric proteinase SP 220 K appears as the native form.

    Science.gov (United States)

    Poustis-Delpont, C; Thaon, S; Auberger, P; Gerardi-Laffin, C; Sudaka, P; Rossi, B

    1994-05-20

    Guanidinobenzoatases are cell surface enzymes present in cells capable of migration or remodeling. The guanidinobenzoatase purified to homogeneity from human renal carcinoma did not display gelatinase activity under the 55-kDa form (Poustis-Delpont, C., Descomps, R., Auberger, P., Delque-Bayer, P., Sudaka, P., and Rossi, B. (1992) Cancer Res. 52, 3622-3628). We bring new insights into the structure-activity relationships of this enzyme using sodium dodecyl sulfate-polyacrylamide gel electrophoresis, [3H]diisopropyl fluorophosphate labeling, gelatin zymography, and immunodetection using a polyclonal antibody raised against the 55-kDa entity. Upon aggregation into a 220-kDa form, the enzyme exhibited [3H]diisopropyl fluorophosphate labeling and diisopropyl fluorophosphate-inhibitable gelatinase activity whereas its capability to cleave p-nitrophenyl p'-guanidinobenzoate as a substrate was abolished. Thus, the guanidinobenzoatase property appears as a feature of a 55-kDa inactive form of a serine proteinase subunit. After boiling in the presence of sodium dodecyl sulfate (3% w/v), the 220-kDa entity subjected to SDS-polyacrylamide gel electrophoresis could be dissociated into a 55-kDa protein as shown by silver staining. The resulting 55-kDa band remained [3H]diisopropyl fluorophosphate-labeled and reacted with anti-55-kDa guanidinobenzoatase antibodies, strongly suggesting that the 220-kDa proteinase was a noncovalently associated tetramer. Interestingly, Triton X-100 extracts of renal carcinoma plasma membranes exhibited a 220-kDa serine proteinase activity, as expressed in gelatin zymography, which was barely detectable in the non-tumoral counterpart. It is noteworthy that an anti-55-kDa guanidinobenzoatase reactive 220-kDa species was also observed in renal carcinoma plasma membranes extracts as assessed by Western blot, whereas it was hardly visible in the non-tumoral counterpart. No signal was immunodetected at M(r) 55,000 in renal carcinoma and kidney cortex

  20. 220kV输电线路近区建筑物工频电场抑制措施%Control of Power Frequency Electric Field near Building Close to 220 kV Transmission Line

    Institute of Scientific and Technical Information of China (English)

    刘刚; 许彬; 季严飞; 高云鹏; 谢湘昭; 曾能先

    2011-01-01

    针对高压输电线引起工频电场污染对近区高层建筑产生的影响,研究了抑制工频电场的措施方案。以某220kV高压线跨越建筑物段为例,首先对分别采用架设屏蔽线、屏蔽网以及房屋阳台处架设屏蔽网兼做防盗网的3种措施后的地面1.5m高处的电场强度分布,以及房屋外沿(尤其是阳台或走廊)的场强分布进行有限元法仿真计算分析。仿真结果表明:这些措施都能减小高压线近区建筑的电场强度。然后通过模拟实验验证仿真的有效性,进而对比3种措施屏蔽效果、优缺点及适用范围。最后得出抑制工频电场相对较好的方案,即民居高层阳台处架设屏蔽网兼做防盗网,其屏蔽效果降低至原来的7.4%~59.9%,效果优于屏蔽线,次于屏蔽网,但其工程易于实现,维护方便,是一种较好的选择方案。%For the pollution of frequency electric field on the high-rise building caused by the nearby high voltage transmission line,the measures scheme to limit the power frequency electric field value was analyzed.In this paper,with a 220 kV high voltage line across the building section as an example,firstly,this paper adopts 3 kinds of measures,including erecting shielding wire,shielding net,and houses balcony place erected shielding net that also can be regarded as network security.Then by the simulation of electric field to analysis electric field intensity distribution on the ground 1.5 m high and the outer edge of the building(especially the balcony or corridor).Simulation results show that: these measures can reduce the high-voltage electric field strength near the building.Secondly,simulation experiment was used to verify the validity of simulation,then by comparing the shielding effect of three kinds of measures,advantages,disadvantages and application.Finally,inhibition of power frequency electric field obtained relatively good effect that is erecting shielding network holds

  1. Quality of life and influencing factors for patients with silicosis: an analysis of 220 cases%220例矽肺病患者的生存质量及其影响因素

    Institute of Scientific and Technical Information of China (English)

    陈文红

    2015-01-01

    Objective To investigate the quality of life and influencing factors for patients with silicosis and to provide a basis for treatment of silicosis.Methods Two hundred and twenty stone workers with silicosis from June 1999 to June 2014 were enrolled into observation group,while healthy stone workers within the same period were used as controls.The quality of life was evaluated using the Chinese version of the World Health Organization Quality of Life Assessment (WHOQOL-100),and the influencing factors were determined using stepwise multivariate regression analysis.Results The scores for psychological function,physiological,independence,spiritual realm,the overall quality of life,and physical condition in the observation group were significantly lower than those in the control group (t=7.1168,P<0.05; t=3.8165,P<0.05; t=5.9230,P<0.05; t=2.7764,P<0.05; t=3.0761,P<0.05).The scores for 11 items including pain,discomfort,energy,fatigue,sleep,and rest in the observation group were significantly lower than those in the control group (P<0.05).Negative emotions,silicosis stage,recreation,age,reliance on health care,pain,discomfort,and spiritual beliefs were all influencing factors for the quality of life,which resulted in 68.3% of variation in the quality of life.Conclusion Besides clinical treatment,health and psychological education and recreation are important for patients with silicosis to improve their quality of life.%目的 通过对220例矽肺病患者的生存质量及其影响因素进行分析,为尘肺病患者的治疗与康复提供参考.方法 收集1999年6月至2014年6月确诊的220例石雕工人矽肺病患者为观察组,同时选取同期石雕工人健康者为对照组;采用世界卫生组织生存质量测定量表简表中文版(WHOQOL-100)评价其生存质量,采用多元逐步回归分析法对有关影响因素进行分析.结果 观察组生理功能、心理、独立性及精神领域和总的生活质量及健康状况分数

  2. Structural optimization design of lightning protection for 220 kV composite material tower%220 kV复合材料杆塔防雷结构优化设计

    Institute of Scientific and Technical Information of China (English)

    赵淳; 张化昭; 吴泳聪; 苏杰

    2015-01-01

    Composite material tower is one of development directions for transmission line tower structure.Because of its special insulation structure,people tend to suspended ground along transmission line in all kinds of design patterns for its lightning protection.However,it is still uncertain that whether the insulation structure of tower can meet the lightning protection requirement or not in this design method.And so,this paper establishes 220 kV composite material tower and double circuit transmission line models from the point of reducing the rate of lightning trip based on ATP,and make an analysis of the influence of such factors as length of cross-picul,vertical distance between upper and lower phase wire,pole height,protection angle and horizontal span.Proposing a scheme for optimum structure design of composite material tower in lightning protection performance according to the simulation outcomes.The simulation results show that the tower has the best lightning protection performance when the three phase length of crosspicul is 2.1,2.4,2.1 and 2.1 m respectively,and pole height is 23.6 m,horizontal span is 400 m.%复合材料杆塔是线路杆塔结构发展方向之一,因其独特的绝缘结构,目前在研的防雷设计形式趋向于避雷线顺线方向悬空接地,但在此种接地方式下杆塔的绝缘结构方式能否达到防雷要求有待求证.若从降低雷击跳闸率的角度出发,利用ATP EMTP软件建立220 kV全复合材料杆塔双回输电线路模型并分析不同横担长度、相间距及相地距、杆塔呼高、保护角及水平档距对线路耐雷水平及雷击跳闸率的影响,最终可得到能达到规定雷击跳闸率要求的复合材料杆塔优化结构.结果表明:上、中、下相和地线横担长度为2.1、2.4、2.1、2.1m,杆塔呼高为23.6m,塔高34.6 m.水平档距设为400 m,杆塔在这种运行参数下的综合防雷性能最好.

  3. {sup 220}Rn measurements and implications for earlier surveys of {sup 222}Rn; Meting van {sup 220}Rn en consequenties voor eerdere {sup 222}Rn-surveys. VERA-onderzoek

    Energy Technology Data Exchange (ETDEWEB)

    Blaauboer, R.O.

    2010-08-15

    The concentration of radioactive radon gas (Rn-222) encountered in newly constructed dwellings was lower than that expected from earlier surveys. An investigation into the response of the radon detectors used in these earlier surveys revealed that these were also sensitive to radioactive thoron (Rn-220), of which more appears to be present than originally assumed. This is the primary outcome of a detailed examination of the detectors that resulted from a national study on radiation exposure in Dutch dwellings constructed between 1994 and 2003. Detectors used in international radon comparison studies have only been set to test for radon, not thoron. Consequently, in practice it is not immediately evident that some detectors actually measure thoron as well, which is also reported as radon. The increasing interest shown by the Netherlands for thoron, provoked by survey results that appear to have been strongly affected by this radioactive isotope of radon, is mirrored by many other countries. The thoron found in dwellings seems to originate from a (frequently used) building material, possibly a finishing material, which has a relatively high thoron exhalation rate. It has more recently been determined that for many years a type of plaster was used in the Netherlands that contained phosphogypsum, a material known for its high radon content. However, it is possible that other materials incorporated into finishing layers also contribute to higher indoor thoron levels. A large portion of the total indoor exposure of occupants to radiation is from inhalation of radioactive decay products of radon and thoron. Radon and thoron are formed in the soil and earth-based building materials by radioactive decay and, because they are gaseous, they are able to diffuse into homes and other buildings. Exposure to ionizing radiation in the home accounts for approximately half of the average annual radiation dose received by a Dutch citizen. [Dutch] Er komt minder radioactief radongas

  4. 3D Object Visual Tracking for the 220 kV/330 kV High-Voltage Live-Line Insulator Cleaning Robot

    Institute of Scientific and Technical Information of China (English)

    ZHANG Jian; YANG Ru-qing

    2009-01-01

    The 3D object visual tracking problem is studied for the robot vision system of the 220 kV/330 kV high-voltage live-line insulator cleaning robot. The SUSAN Edge based Scale Invariant Feature (SESIF) algorithm based 3D objects visual tracking is achieved in three stages: the first frame stage, tracking stage, and recovering stage. An SESIF based objects recognition algorithm is proposed to fred initial location at both the first frame stage and recovering stage. An SESIF and Lie group based visual tracking algorithm is used to track 3D object. Experiments verify the algorithm's robustness. This algorithm will be used in the second generation of the 220 kV/330 kV high-voltage five-line insulator cleaning robot.

  5. Surface chemistry of the preferred (111) and (220) crystal oriented microcrystalline Si films by radio-frequency plasma-enhanced chemical vapor deposition

    Energy Technology Data Exchange (ETDEWEB)

    Ohba, Daisuke; Koshino, Hideto; Tang, Zeguo; Shirai, Hajime [Graduate School of Science and Engineering, Saitama University, Sakura (Japan)

    2011-10-15

    The surface chemistry of the preferentially (111) and (220) crystal orientated chlorinated hydrogenated microcrystalline silicon ({mu}c-Si:H:Cl) films was studied using a rf PE-CVD of a dichlorosilane (SiH{sub 2}Cl{sub 2}) and H{sub 2} mixture. The growing surface for the preferentially (220) crystal oriented {mu}c-Si:H:Cl films included much voids and dangling bonds, whereas the growing surface with the preferential (111) crystal orientation was chemically stable relatively. These findings suggest that the sticking process of deposition precursors and/or the reconstruction of Si clusters within the sub-surface determine the preferential crystal orientation. (copyright 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  6. C22:0- and C24:0-dihydroceramides confer mixed cytotoxicity in T-cell acute lymphoblastic leukemia cell lines.

    Directory of Open Access Journals (Sweden)

    Michael W Holliday

    Full Text Available We previously reported that fenretinide (4-HPR was cytotoxic to acute lymphoblastic leukemia (ALL cell lines in vitro in association with increased levels of de novo synthesized dihydroceramides, the immediate precursors of ceramides. However, the cytotoxic potentials of native dihydroceramides have not been defined. Therefore, we determined the cytotoxic effects of increasing dihydroceramide levels via de novo synthesis in T-cell ALL cell lines and whether such cytotoxicity was dependent on an absolute increase in total dihydroceramide mass versus an increase of certain specific dihydroceramides. A novel method employing supplementation of individual fatty acids, sphinganine, and the dihydroceramide desaturase-1 (DES inhibitor, GT-11, was used to increase de novo dihydroceramide synthesis and absolute levels of specific dihydroceramides and ceramides. Sphingolipidomic analyses of four T-cell ALL cell lines revealed strong positive correlations between cytotoxicity and levels of C22:0-dihydroceramide (ρ = 0.74-0.81, P ≤ 0.04 and C24:0-dihydroceramide (ρ = 0.84-0.90, P ≤ 0.004, but not between total or other individual dihydroceramides, ceramides, or sphingoid bases or phosphorylated derivatives. Selective increase of C22:0- and C24:0-dihydroceramide increased level and flux of autophagy marker, LC3B-II, and increased DNA fragmentation (TUNEL assay in the absence of an increase of reactive oxygen species; pan-caspase inhibition blocked DNA fragmentation but not cell death. C22:0-fatty acid supplemented to 4-HPR treated cells further increased C22:0-dihydroceramide levels (P ≤ 0.001 and cytotoxicity (P ≤ 0.001. These data demonstrate that increases of specific dihydroceramides are cytotoxic to T-cell ALL cells by a caspase-independent, mixed cell death mechanism associated with increased autophagy and suggest that dihydroceramides may contribute to 4-HPR-induced cytotoxicity. The targeted increase of specific acyl chain dihydroceramides

  7. Substitutions at Methionine 220 in the 14α-Sterol Demethylase (Cyp51A) of Aspergillus fumigatus Are Responsible for Resistance In Vitro to Azole Antifungal Drugs

    OpenAIRE

    Mellado, E.; Garcia-Effron, G.; Alcazar-Fuoli, L.; Cuenca-Estrella, M.; Rodriguez-Tudela, J. L.

    2004-01-01

    Five clinical isolates of Aspergillus fumigatus that exhibited similar patterns of reduced susceptibility to itraconazole and other triazole drugs were analyzed. Sequence analysis of genes (cyp51A and cyp51B) encoding the 14α-sterol demethylases revealed that all five strains harbored mutations in cyp51A resulting in the replacement of methionine at residue 220 by valine, lysine, or threonine. When the mutated cyp51A genes were introduced into an A. fumigatus wild-type strain, the transforman...

  8. Cupric ion release and cytotoxicity for Yuangong Cu-IUDs and the release behavior of indomethacin for medicated 220 Cu-IUD

    Institute of Scientific and Technical Information of China (English)

    CAO BianMei; XI TingFei; ZHENG YuDong; YANG LiFeng; ZHENG Qi

    2009-01-01

    These years Yuangong copper-bearing intrauterine devices (Cu-IUDs) have been used because of less side effects in use. The corrosion of copper is essential to the success of contraception,and the release behavior of indomethacin from medicated Cu-IUD is related to its therapeutic effect. In this study,analytical methods were established to investigate the release behavior of cupric ion of three kinds of Yuangong Cu-IUDs and indomethacin of medicated Yuangong 220 Cu-IUD. Cu-IUDs were incubated in simulated uterine solution (SUS). The concentrations of cupric ion and indomethacin were analyzed by flame atomic absorption spectrometer (FAAS) for 60 days and UV/vis-3310 spectrophotometer for 60 days,respectively. The morphology of copper after corrosion was characterized by SEM. In addition,we detected cytotoxicity by MTT of L929 mouse fibroblasts cells caused by extracts of the three Yuangong Cu-IUDs. The release behavior of cupric ion for three kinds of Yuangong Cu-IUDs was biphasic,which consisted of the initial burst release and then slow and constant release. In vitro release experiment confirmed a biphasic release of indomethacin from Yuangong 220. The copper wire of Yuangong Cu-IUDs showed uneven corrosion. The RGR value of Yuangong 365 Cu-IUD was smaller than that of medicated Yuangong 220 Cu-IUD and RGR value of medicated Yuangong 220 Cu-IUD was smaller than that of Yuangong 300 Cu-IUD. The cupric ion release and indomethacin release showed biphasic. Indomethacin increased the cupric ion release rate and might diminish the adverse effects caused by burst release of cupric ion. The toxicity grade of these three Yuangong Cu-IUDs was 4. We should canvass the adverse events of Cu-IUDs based on practical experiments,and try our best to reduce the toxicity of Cu-IUDs.

  9. 220 fs Er-Yb:glass laser mode-locked by a broadband low-loss Si/Ge saturable absorber

    CERN Document Server

    Grawert, F J; Ilday, F O; Liu, J; Gopinath, J T; Shen, H M; Wada, K; Ippen, E P; Kimerling, L C; Kaertner, Franz X

    2004-01-01

    We demonstrate femtosecond performance of an ultra-broadband high-index-contrast saturable Bragg reflector consisting of a silicon/silicon-dioxide/germanium structure that is fully compatible with CMOS processing. This device offers a reflectivity bandwidth of over 700 nm and sub-picosecond recovery time of the saturable loss. It is used to achieve mode-locking of an Er-Yb:glass laser centered at 1540 nm, generating 220 fs pulses, with the broadest output spectrum to date.

  10. 47 CFR 95.220 - (R/C Rules 20) What must I do if the FCC tells me that my R/C station is causing interference?

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false (R/C Rules 20) What must I do if the FCC tells.../C) Radio Service Other Things You Need to Know § 95.220 (R/C Rules 20) What must I do if the FCC tells me that my R/C station is causing interference? (a) If the FCC tells you that your R/C station...

  11. Maximum Heart Rate during exercise: Reliability of the 220-age and Tanaka formulas in healthy young people at a moderate elevation

    Directory of Open Access Journals (Sweden)

    Luis Eduardo Cruz-Martínez

    2014-10-01

    Full Text Available Background. The formulas to predict maximum heart rate have been used for many years in different populations. Objective. To verify the significance and the association of formulas of Tanaka and 220-age when compared to real maximum heart rate. Materials and methods. 30 subjects -22 men, 8 women- between 18 and 30 years of age were evaluated on a cycle ergometer and their real MHR values were statistically compared with the values of formulas currently used to predict MHR. Results. The results demonstrate that both Tanaka p=0.0026 and 220-age p=0.000003 do not predict real MHR, nor does a linear association exist between them. Conclusions. Due to the overestimation with respect to real MHR value that these formulas make, we suggest a correction of 6 bpm to the final result. This value represents the median of the difference between the Tanaka value and the real MHR. Both Tanaka (r=0.272 and 220-age (r=0.276 are not adequate predictors of MHR during exercise at the elevation of Bogotá in subjects of 18 to 30 years of age, although more study with a larger sample size is suggested.

  12. Isolation, development and identification of salt-tolerant bacterial consortium from crude-oil-contaminated soil for degradation of di-azo dye Reactive Blue 220.

    Science.gov (United States)

    Patel, Vipul R; Bhatt, Nikhil

    2015-01-01

    The objective of this study was development and characterization of a halophilic bacterial consortium for rapid decolorization and degradation of a wide range of dyes and their mixtures. The 16S rRNA gene analysis of developed halophilic consortium VN.1 showed that the bacterial consortium contained six bacterial strains, which were identified as Pseudomonas fluorescens HM480360, Enterobacter aerogenes HM480361, Shewanella sp. HM589853, Arthrobacter nicotianae HM480363, Bacillus beijingensis HM480362 and Pseudomonas aeruginosa JQ659549. Halophilic consortium VN.1 was able to decolorize up to 2,500 mg/L RB220 with >85% chemical oxygen demand (COD) reduction under static condition at 30 °C and pH 8.0 in the presence of 7% NaCl. VN.1 also exhibited more than 85% COD reduction with >25 mg/(L h) rate of decolorization in the case of different reactive dye mixtures. We propose the symmetric cleavage of RB220 using Fourier transform infrared, high-performance liquid chromatography (HPLC), nuclear magnetic resonance and gas chromatography-mass spectrometry analysis, and confirmed the formation of sodium-4-aminobenzenesulfonate, sodium-6-aminonepthalenesulfonate, and sodiumbenzene/nepthalenesulfonate. Toxicity studies confirm that the biodegraded products of RB220 effluent stimulate the growth of plants as well as the bacterial community responsible for soil fertility. PMID:26177415

  13. Isolation, development and identification of salt-tolerant bacterial consortium from crude-oil-contaminated soil for degradation of di-azo dye Reactive Blue 220.

    Science.gov (United States)

    Patel, Vipul R; Bhatt, Nikhil

    2015-01-01

    The objective of this study was development and characterization of a halophilic bacterial consortium for rapid decolorization and degradation of a wide range of dyes and their mixtures. The 16S rRNA gene analysis of developed halophilic consortium VN.1 showed that the bacterial consortium contained six bacterial strains, which were identified as Pseudomonas fluorescens HM480360, Enterobacter aerogenes HM480361, Shewanella sp. HM589853, Arthrobacter nicotianae HM480363, Bacillus beijingensis HM480362 and Pseudomonas aeruginosa JQ659549. Halophilic consortium VN.1 was able to decolorize up to 2,500 mg/L RB220 with >85% chemical oxygen demand (COD) reduction under static condition at 30 °C and pH 8.0 in the presence of 7% NaCl. VN.1 also exhibited more than 85% COD reduction with >25 mg/(L h) rate of decolorization in the case of different reactive dye mixtures. We propose the symmetric cleavage of RB220 using Fourier transform infrared, high-performance liquid chromatography (HPLC), nuclear magnetic resonance and gas chromatography-mass spectrometry analysis, and confirmed the formation of sodium-4-aminobenzenesulfonate, sodium-6-aminonepthalenesulfonate, and sodiumbenzene/nepthalenesulfonate. Toxicity studies confirm that the biodegraded products of RB220 effluent stimulate the growth of plants as well as the bacterial community responsible for soil fertility.

  14. Solitary fibrous tumor of the central nervous system: a 15-year literature survey of 220 cases (August 1996-July 2011).

    LENUS (Irish Health Repository)

    Bisceglia, Michele

    2011-09-01

    We reviewed the world literature on solitary fibrous tumors of the central nervous system from August 1996 to July 2011, focusing on both clinicopathological features and diagnostic findings. The anatomical distribution of the 220 cases reported so far reveals that most are intracranial and just over one-fifth are intraspinal. In decreasing frequency, intracranial tumors involve the supratentorial and infratentorial compartments, the pontocerebellar angle, the sellar and parasellar regions, and the cranial nerves. Intraspinal tumors are mainly located in the thoracic and cervical segments. Although most solitary fibrous tumors of the central nervous system are dural based, a small subset presents as subpial, intraparenchymal, intraventricular, or as tumors involving the nerve rootlets with no dural connection. Preoperative imaging and intraoperative findings suggest meningioma, schwannoma or neurofibroma, hemangiopericytoma, or pituitary tumors. Immunohistochemistry is critical to establish a definitive histopathological diagnosis. Vimentin, CD34, BCL2, and CD99 are the most consistently positive markers. The usual histologic type generally behaves in a benign manner if complete removal is achieved. Recurrence is anticipated when resection is subtotal or when the tumor exhibits atypical histology. The proliferative index as assessed by MIB1 labeling is of prognostic significance. Occasionally, tumors featuring conventional morphology may recur, perhaps because of minimal residual disease left behind during surgical extirpation. Rare extracranial metastases and tumor-related deaths are on record. Surgery is the treatment of choice. Stereotactic and external beam radiation therapy may be indicated for postsurgical tumor remnants and for unresectable recurrences. Long-term active surveillance of the patients is mandatory.

  15. Evaluation of Contraceptive Effects of Inserting New Type Intrauterine Devices Including Gynefix, MCu and TCu220 Immediately after Induced Abortion%人工流产术后即时放置GyneFix IUD、MCu IUD和TCu220 IUD避孕效果分析

    Institute of Scientific and Technical Information of China (English)

    楼芝英; 乐园罗

    2007-01-01

    目的:评价新型宫内节育器(IUD)GyneFix IUD和MCu IUD及传统节育器TCu220 IUD的避孕效果.方法:以人工流产术后志愿放置IUD的690例为对象,随机分为3组,分别于人工流产术后即时放置Gyne Fix IUD、MCu IUD和TCu220 IUD. 结果:GyneFix IUD,MCu IUD和TCu220 IUD使用12个月带器妊娠率分别为0.48%、0.85%、3.75%,脱落率分别为0.93%、0.85%、2.92%,因症取出率分别为2.80%、3.81%、6.25%,续用率分别为95.80%,94.49%,87.08%,放置IUD后月经异常发生率分别为8.88 % 、5.93% 、12.5 %. 结论:GyneFix IUD、MCu IUD和TCu220 IUD避孕效果均较理想,但TCu220 IUD可能是放置型号不易掌握,带器妊娠、脱落、月经异常发生率较两种新型IUD高.

  16. 220例玻璃体切割术治疗黄斑前膜的临床疗效观察%The clinical curative effects observation of 220 cases of vitrectomy for the treatment of anterior macular membrane

    Institute of Scientific and Technical Information of China (English)

    黄艳; 陈为民; 李平华

    2016-01-01

    Objective To investigate the efficacy and prognostic factors of vitrectomy in the treatment of idiopathic macular epiretinal membrane ( IMEM ) .Methods Clinical data of 220 cases (242 eyes) with IMEM who were accepted vitrectomy in the ophthalmology department in the people′s hospital of Yubei district in Chongqing from June 2011 to June 2013 were retrospective analyzed.All the cases were divided into two groups according to whether the visual acuity was improved after operated. 12 possible factors that may affect the postoperative recovery of visual acuity in patients with IMEM were recorded separately or checked, including all patients′gender, age, the type of surgical filler, preoperative ocular anterior segment and posterior segment complications, course of disease, preoperative best corrected visual acuity ( BVCA ) , preoperative central foveal of macular average thickness ( CMT ) , preoperative continuity of the inner and outer segment ( IS/OS) of the photoreceptor cell layer of the retina,whether using triamcinolone acetonide to stain during the operation, whether stripping internal limiting membrane ( ILM ) during the operation and whether complications were occurred after operation.The enumeration data were expressed by the number of eyes and the percentage.The differences between the groups were treated withχ2 test,at the same time to control the hybrid, multiple Logistic regression analysis were used to multivariate analysis to find the related factors affecting the recovery of visual acuity.Results All patients were successfully completed surgeries and were followed up in 6-12 months after operations.The average follow-up time was (8.5 ±2.2) months.Compared with pre-treatment,180 cases (194 eyes) improved their visual acuity in all 220 cases (242 eyes),accounting for 80.17%.The visual acuity of 32 cases (38 eyes) was not improved (15.70%).Visual acuity of 8 cases (10 eyes) decreased (4.13%).Postoperative complications occurred in 9 patients ( 12

  17. Experimental measurement of the solubility of bismuth phases in water vapor from 220 deg. C to 300 deg. C: Implications for ore formation

    Energy Technology Data Exchange (ETDEWEB)

    Kruszewski, Jason M. [Department of Geological Sciences, University of Idaho, Moscow, ID 83844-3022 (United States); Wood, Scott A., E-mail: swood@uidaho.edu [Department of Geological Sciences, University of Idaho, Moscow, ID 83844-3022 (United States)

    2009-04-15

    Preliminary measurements were carried out of the solubility of the O{sub 2-}buffering assemblage bismuth + bismite (Bi{sub 2}O{sub 3}) in aqueous liquid-vapor and vapor-only systems at temperatures of 220, 250 and 300 deg. C. All experiments were carried out in Ti reaction vessels and were designed such that the Bi solids were contained in a silica tube that prevented contact with liquid water at any time during the experiment. Two blank (no Bi solids present) liquid-vapor experiments at 220 deg. C yielded Bi concentrations ({+-}1{sigma}) in the condensed liquid of 0.22 {+-} 0.02 mg/L, whereas the solubility measurements at this temperature yielded an average value of approximately 6 {+-} 9 mg/L, with replicate experiments ranging from 0.3 to 26 mg/L. Although the 6 mg/L value is associated with a considerable degree of uncertainty, the experiments do indicate transport of Bi through the vapor phase. Measured Bi concentrations in the condensed liquid at 250 deg. C were in the same range as those at 220 deg. C, whereas those at 300 deg. C were significantly lower (i.e., all below the blank value). Vapor-only experiments necessarily contained much smaller initial volumes of water, thereby making the results more susceptible to contamination. Single blank runs at 220 and 300 deg. C yielded Bi concentrations of 82 and 16 mg/L, respectively. Measured concentrations ({+-}1{sigma}) of Bi in the vapor-only solubility experiments at 220 deg. C were 235 {+-} 78 mg/L for an initial water volume of 0.5 mL, and at 300 deg. C were 56 {+-} 30 mg/L and 33 {+-} 21 for initial water volumes of 1 and 2 mL, respectively, suggesting strong preferential partitioning of Bi into the vapor. The results indicate a negative dependence of Bi solubility on temperature, but are inconclusive with respect to the dependence of Bi solubility on water density or fugacity. The experiments reported here suggest that significant Bi transport is possible in the vapor phase. Comparison of the liquid

  18. Linear and nonlinear transmission of Fe{sup 2+}-doped ZnSe crystals at a wavelength of 2940 nm in the temperature range 20–220 °C

    Energy Technology Data Exchange (ETDEWEB)

    Il' ichev, N N; Pashinin, P P; Gulyamova, E S; Bufetova, G A [A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation); Shapkin, P V; Nasibov, A S [P N Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

    2014-03-28

    The linear and nonlinear transmission of Fe{sup 2+}:ZnSe crystals is measured at a wavelength of 2940 nm in the temperature range 20 – 220 °C. It is found that, with increasing temperature from 20 °C to 150 – 220 °C, the transmission of Fe{sup 2+}:ZnSe crystals decreases in the case of incident radiation with an intensity of ∼5.5 MW cm{sup -2} and increases in the case of radiation with an intensity of 28 kW cm{sup -2}. At a temperature of 220 °C, the linear transmission almost coincides with the nonlinear transmission. The transmission spectra of Fe{sup 2+}:ZnSe crystals at temperatures of 22 and 220 °C in the wavelength range 500 – 7000 nm are presented. (active media)

  19. DNA strand breaks and crosslinks induced by transient anions in the range 2-20 eV

    Energy Technology Data Exchange (ETDEWEB)

    Luo, Xinglan; Zheng, Yi, E-mail: Yizheng@fzu.edu.cn [Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002 (China); Sanche, Léon [Group in the Radiation Sciences, Faculty of Medicine, Université de Sherbrooke, Sherbrooke, Quebec J1H 5N4 (Canada)

    2014-04-21

    The energy dependence of the yields of single and double strand breaks (SSB and DSB) and crosslinks induced by electron impact on plasmid DNA films is measured in the 2-20 eV range. The yield functions exhibit two strong maxima, which are interpreted to result from the formation of core-excited resonances (i.e., transient anions) of the bases, and their decay into the autoionization channel, resulting in π → π{sup *} electronic transitions of the bases followed by electron transfer to the C–O σ{sup *} bond in the phosphate group. Occupancy of the σ{sup *} orbital ruptures the C–O bond of the backbone via dissociative electron attachment, producing a SSB. From a comparison of our results with those of other works, including theoretical calculations and electron-energy-loss spectra of the bases, the 4.6 eV peak in the SSB yield function is attributed to the resonance decay into the lowest electronically excited states of the bases; in particular, those resulting from the transitions 1{sup 3}A{sup ′} (π{sub 2} → π{sub 3}{sup *}) and 1{sup 3}A{sup ″} (n{sub 2} → π{sub 3}{sup *}) of thymine and 1{sup 3}A{sup ′} (π → π{sup *}) of cytosine. The strongest peak at 9.6 eV in the SSB yield function is also associated with electron captured by excited states of the bases, resulting mostly from a multitude of higher-energy π → π{sup *} transitions. The DSB yield function exhibits strong maxima at 6.1 and 9.6 eV. The peak at 9.6 eV is probably related to the same resonance manifold as that leading to SSB, but the other at 6.1 eV may be more restricted to decay into the electronic state 1{sup 3}A{sup ′} (π → π{sup *}) of cytosine via autoionization. The yield function of crosslinks is dominated by a broad peak extending over the 3.6-11.6 eV range with a sharper one at 17.6 eV. The different line shape of the latter function, compared to that of SSB and DSB, appears to be due to the formation of reactive radical sites in the initial supercoiled

  20. Grey relational analysis model and calculation of operation and maintenance cost for 220 kV transformer%220kV变压器运维检修成本的灰色关联分析模型及计算

    Institute of Scientific and Technical Information of China (English)

    林雪倩; 蔡金锭; 孙轶群; 江修波

    2012-01-01

    针对电力系统220 kV变压器运行现状以及缺陷故障检修数据,引入全寿命周期成本管理理念,对变压器的运维检修阶段进行分析与预测,并建立详细的数学模型.在满足变压器可靠性的前提下,充分考虑设备运行维护期间的人工成本、消除缺陷成本及检修成本等不确定因素,引入灰色系统理论及灰色关联分析,预测出变压器寿命周期中各故障的比例,结合其周期寿命内的检修数据,建立起不同冷却方式的220 kV变压器运维检修模型.最后以某省220 kV变电站变压器选型决策为例,验证该模型的有效性及实用性.该模型能够较为合理地反应变压器运行维护检修寿命期间各个阶段所对应的成本,对相关电力设备的检修成本策略的制定有一定的参考借鉴作用.%According to operation situation and maintenance data of 220 kV transformers, the management concept of life cycle cost is introduced and the operation and maintenance period of transformer is deeply analyzed. The model of operation and maintenance cost for 220 kV transformers is finally established. In the premise of reliability, the inspection cost, defect eliminating cost and maintenance cost are taken into consideration. With the classified defect statistics for 220 kV transformers, the defect proportions of transformer main components are calculated based on the grey system theory and the grey correlation analysis. Combined with the statistics of the maintenance data, the cost model of operation and maintenance is established for 220 kV transformers cooled by different ways. The model is applied in a transformer of a 220 kV substation to verify its effectiveness and practical applicability. It can reflect the operation and maintenance costs of different life period for 220 kV transformers with reasonable, and it is useful to generate the strategy for repairing transformer.

  1. (112) and (220)/(204)-oriented CuInSe{sub 2} thin films grown by co-evaporation under vacuum

    Energy Technology Data Exchange (ETDEWEB)

    Ruffenach, Sandra; Robin, Yoann; Moret, Matthieu, E-mail: matthieu.moret@univ-montp2.fr; Aulombard, Roger-Louis; Briot, Olivier

    2013-05-01

    CuInSe{sub 2} (CIS) layers were grown by co-evaporation in a molecular beam epitaxy system onto soda lime glass substrates by using both two-step and three step processes. The physical properties of the layers were investigated using X-ray diffraction (XRD) and optical spectroscopy. The sample atomic composition was assessed by energy dispersive analysis of X-rays. Cu-rich or In-rich CIS thin films were obtained exhibiting strong preferential (112) and (220)/(204) orientations in both cases. We performed thermal annealing at 450 °C under nitrogen, keeping Se overpressure to avoid Se desorption from the layer. The annealed layers all exhibit improved crystalline quality, with reduced stoichiometric discrepancy. The secondary phases like Cu{sub x}Se{sub 1−x} or In{sub x}Se{sub 1−x} are no more observable by XRD measurements. Regarding the preferential orientation, thermal annealing of Cu-rich CIS layers favours the (112) orientation leading to a more (112) textured layer after annealing, whatever the initial preferential growth orientation was. In opposite, thermal annealing of In-rich samples increases the (220)/(204) texture of the sample. - Highlights: ► We have studied the thermal annealing effect of Cu-rich and In-rich CuInSe{sub 2}. ► Thermal annealing improves the optical and crystalline quality. ► Secondary phase turned to CuInSe{sub 2} through a recrystallization process or evaporated. ► Thermal annealing of Cu-rich layers leads to an increase of the (112) texture. ► Thermal annealing of In-rich layers leads to an increase of the (220)/(204) texture.

  2. 基于IEC-61850的220kV变电站监控系统建模与实现

    Institute of Scientific and Technical Information of China (English)

    陈正邦

    2011-01-01

    本文介绍了IEC~61850标准体系结构和特点,提出了基于IEC-61850的变电站监控系统建模原则,并以220kV榕东变电站为例介绍了基于IEC-61850的变电站自动化监控系统结构和基本功能,从实例的角度总结了IEC-61850特点及优势,并提出了未米发展方向。

  3. A total of 220 patients with autosomal dominant spastic paraplegia do not display mutations in the SLC33A1 gene (SPG42)

    OpenAIRE

    Schlipf, Nina A; Beetz, Christian; Schüle, Rebecca; Stevanin, Giovanni; Erichsen, Anne Kjersti; Forlani, Sylvie; Zaros, Cécile; Karle, Kathrin; Klebe, Stephan; Klimpe, Sven; Durr, Alexandra; Otto, Susanne; Tallaksen, Chantal M. E.; Riess, Olaf; Brice, Alexis

    2010-01-01

    The most frequent causes of autosomal dominant (AD) hereditary spastic paraplegias (HSP) (ADHSP) are mutations in the SPAST gene (SPG4 locus). However, roughly 60% of patients are negative for SPAST mutations, despite their family history being compatible with AD inheritance. A mutation in the gene for an acetyl-CoA transporter (SLC33A1) has recently been reported in one Chinese family to cause ADHSP-type SPG42. In this study, we screened 220 independent SPAST mutation-negative ADHSP samples ...

  4. 佳能CP-330、CP-220照片打印机 升华“即拍即打”的乐趣

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    佳能最新推出了两款CP系列的最新热升华照片打印机.具有PictBrige功能.可以连接支持PictBrige标准的数码相机、摄像机直接打印照片。虽然新款CP-330和CP-220的外观和以前的产品变化不大.但是它们的性能表现更加出色。

  5. Humidity sensing properties of La~(3+)/Ce~(3+)-doped TiO_2-20 wt.% SnO_2 thin films derived from sol-gel method

    Institute of Scientific and Technical Information of China (English)

    李红霞; 史志铭; 刘红伟

    2010-01-01

    The humidity sensing properties of La3+/Ce3+-doped TiO2-20 wt.%SnO2 thin films were studied.Sol-gel method was employed to prepare the films on alumina substrates.By constructing a humidity-impedance measuring system,the sensing behaviors were inspected for the films sintered at different temperatures.Experimental results showed that,0.5 wt.% of La2O3 or Ce2O3 doped films sintered at 500 °C for 2 h had the best humidity sensing properties,the impedance decreasing from 109 ? to below 104 ? in the humidity ra...

  6. METHODICAL APPROACHES TO THE CHOICE OF THE NEW GENERATION OF HIGH-VOLTAGE POWER TRANSMISSION LINE 220 kV OPTIONS

    Directory of Open Access Journals (Sweden)

    POSTOLATI V.M.

    2010-08-01

    Full Text Available The Transmission Power Lines of new generation are described in the article (single- compact, double-circuit compact, double-circuit Controlled Self-compensating High Voltage Transmission Power Lines (CSHVL. Basic principles of creation, design elements and comparative characteristics of the transmission lines of the new generation are described, the advantages of its are showed. Methodical approaches to the choosing of a new generation of transmission lines and facilities management FACTS are formulated. Methodical approaches to the choice of options for transmission lines 220 kV and facilities management are shown.

  7. Descoloração e degradação do azo corante Vermelho GRLX-220 por ozonização

    Directory of Open Access Journals (Sweden)

    Patrícia Kelly dos Santos

    2011-01-01

    Full Text Available The discoloration and degradation of the textile dye RED GRLX-220 using the electrochemically generated ozone was investigated. Total discoloration was rapidly achieved in both acid and basic conditions. A pseudo-first order kinetics was observed for discoloration, influenced by pH and ozonation time. A considerable degree of mineralization (60% was obtained after 30 min of ozonation in alkaline medium. The feasibility of organic matter oxidation during the ozonation process increased in both acidic and alkaline media. The toxicity decreased after the ozonation process, suggesting that the byproducts are less toxic than the parental compound.

  8. Reconstruction and Energetics of the Polar (112) and ( 1 1 2 ) Versus the Non-Polar (220) Surfaces of CuInSe2: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, S. B.; Wei, S. H.

    2001-10-01

    Presented at the 2001 NCPV Program Review Meeting: First-principles total-energy study of CIS reveals a number of (112) and (-1-1-2) surface structures stable at different atomic chemical potentials. First-principles total-energy study for CuInSe2 reveals a number of (112) and ({ovr 112}) surface structures stable at different atomic chemical potentials. This structure richness raises the possibility for engineering CIS/CIGS properties by surface control during the growth. The experimentally observed spontaneous decomposition of the (220)/(204) surfaces into (112) and ({ovr 112}) is also confirmed by calculating the absolute surface energies.

  9. On the solar origin of the signal at 220.7microHz: A possible component of a g mode?

    OpenAIRE

    Jimenez, A; Garcia, R. A.

    2009-01-01

    Gravity modes in the Sun have been the object of a long and difficult search in recent decades. Thanks to the data accumulated with the last generation of instruments (BiSON, GONG and three helioseismic instruments aboard SoHO), scientists have been able to find signatures of their presence. However, the individual detection of such modes remains evasive. In this article, we study the signal at 220.7 microHz which is a peak that is present in most of the helioseismic data of the last 10 years...

  10. 220 kV变电站气体绝缘金属封闭开关设备优化配置探讨%Study on Optimal Layout Scheme of Gas Insulated Metal-enclosed Switchgear Equipment in 220 kV Substation

    Institute of Scientific and Technical Information of China (English)

    史卓鹏; 王志刚

    2014-01-01

    This paper is mainly to study on main electrical wiring’s layout schemes considering the position, construction scale, occurrence,and characteristics of equipment of 220 kV substation in the system on the condition of safe and reliable operation so as to achieve the aims of saving investment,reducing the land occupation,promoting environmental protection and operating in safe and reliable mode.%结合220 kV变电站在系统中的地位、建设规模、出线情况及设备的特点,在满足安全可靠的前提下,探讨电气主接线及布置方案,以期达到节约投资、减少占地、绿色环保、安全可靠的目的。

  11. A Naturally Occurring Mutation K220T in the Pleiotropic Activator PrfA of Listeria Monocytogenes Results in a Loss of Virulence Due to Decreasing DNA-Binding Affinity

    Energy Technology Data Exchange (ETDEWEB)

    Velge,P.; Herler, M.; Johansson, J.; Roches, S.; Temoin, S.; Fedorov, A.; Gracieux, P.; Almo, S.; Goebel, W.; Cossart, P.

    2007-01-01

    The sequencing of prfA, encoding the transcriptional regulator of virulence genes, in 26 low-virulence field Listeria monocytogenes strains showed that eight strains exhibited the same single amino-acid substitution: PrfAK220T. These strains exhibited no expression of PrfA-regulated proteins and thus no virulence. This substitution inactivated PrfA, since expression of the PrfAK220T mutant gene in an EGD{Delta}prfA strain did not restore the haemolytic and phosphatidylcholine phospholipase C activities, in contrast to the wild-type prfA gene. The substitution of the lysine at position 220 occurred in the helix H. However, the data showed that the PrfAK220T protein is dimerized just as well as its wild-type counterpart, but does not bind to PrfA-boxes. PrfAK220T did not form a PrfA-DNA complex in electrophoretic mobility shift assays, but low concentrations of CI complexes (PrfAK220T-RNA polymerase-DNA complex) were formed by adding RNA polymerase, suggesting that PrfA interacted with RNA polymerase in solution in the absence of DNA. Formation of some transcriptionally active complexes was confirmed by in vitro runoff transcription assays and quantitative RT-PCR. Crystallographic analyses described the structure of native PrfA and highlighted the key role of allosteric changes in the activity of PrfA and especially the role of the Lys220 in the conformation of the helix-turn-helix (HTH) motif.

  12. Being Forgotten Memory—— A Field Visit to No. 220 Western-style Building in Xibin Village of Xiamen%正被遗忘的记忆——厦门西滨220号洋楼探访

    Institute of Scientific and Technical Information of China (English)

    黄丽坤

    2012-01-01

    Several western-style buildings are still reserved in Xibin village of Xiamen, which were built in the 1920s and the 1930s. No.220 building is the larger one. These buildings represent the historical memory of modernization in Chinese architecture in those years, by being constructed in the mixed style of Minnan architectural culture and western styles. But they are faced with the same problem to be abandoned for the rapid urbaniztion as our tradtional culture. It' s very glad to meet the owners of N0.220 building who pay much attention to keep their house well and love it deeply. To save the disppearing tradtional culture, we each one should learn to value our old historical buildings.%厦门西滨洋楼产生于二十世纪二三十年代,其中以220号洋楼型制相对较大,保存较完好。洋楼的型制源于闽南的传统格局,又因为西方文化的影响,超越了传统型制,形成闽南独特的洋楼文化。然而地方的偏远,却导致这些洋楼逐渐衰败,渐被废弃。所幸能遇到220号洋楼的主人,他们对自家的老洋楼十分喜爱和保护。如果每个屋主都有敝帚自珍的情怀,也许我们的遗产会更加丰富,我们的传统不会在现代化过程中过快的消逝。

  13. Natural 222Rn and 220Rn indicate the impact of the Water–Sediment Regulation Scheme (WSRS) on submarine groundwater discharge in the Yellow River estuary, China

    International Nuclear Information System (INIS)

    Highlights: • 220Rn and 222Rn were combined to locate intensive SGD sites. • Influence of WSRS to SGD was found for the first time. • SGD was a dominant nutrient pathway in the Yellow River estuary. - Abstract: Submarine groundwater discharge (SGD) in estuaries brings important influences to coastal ecosystems. In this study, we observed significant SGD in the Yellow River estuary, including a fresh component, during the Water–Sediment Regulation Scheme (WSRS) period. We used the 222Rn and 220Rn isotope pair to locate sites of significant SGD within the study area. Three apparent SGD locations were found during a non-WSRS period, one of which became much more pronounced, according to the remarkably elevated radon levels, during the WSRS. Increased river discharge (from 245 m3 s−1 to 3560 m3 s−1) and the elevated river water level (from 11 m to 13 m) during the WSRS led to a higher hydraulic head, enhancing groundwater discharge in the estuary. Our results suggest that high river discharge (>3000 m3 s−1) might be necessary for elevated fresh submarine groundwater discharging (FSGD). Vertical profiles of salinity, DO and turbidity anomalies along the benthic boundary layer also indicated significant FSGD in the estuary during the WSRS. Nutrient concentrations had positive correlations with 222Rn during a 24-h observation, which indicates that SGD is a dominant nutrient pathway in this area

  14. Low-Resolution Electromagnetic Tomography (LORETA) of changed Brain Function Provoked by Pro-Dopamine Regulator (KB220z) in one Adult ADHD case

    Science.gov (United States)

    Steinberg, Bruce; Blum, Kenneth; McLaughlin, Thomas; Lubar, Joel; Febo, Marcelo; Braverman, Eric R.; Badgaiyan, Rajendra D

    2016-01-01

    Attention Deficit-Hyperactivity Disorder (ADHD) often continues into adulthood. Recent neuroimaging studies found lowered baseline dopamine tone in the brains of affected individuals that may place them at risk for Substance Use Disorder (SUD). This is an observational case study of the potential for novel management of Adult ADHD with a non-addictive glutaminergic-dopaminergic optimization complex KB200z. Low-resolution electromagnetic tomography (LORETA) was used to evaluate the effects of KB220z on a 72-year-old male with ADHD, at baseline and one hour following administration. The resultant z-scores, averaged across Eyes Closed, Eyes Open and Working Memory conditions, increased for each frequency band, in the anterior, dorsal and posterior cingulate regions, as well as the right dorsolateral prefrontal cortex during Working Memory, with KB220z. These scores are consistent with other human and animal neuroimaging studies that demonstrated increased connectivity volumes in reward circuitry and may offer a new approach to ADHD treatment. However, larger randomized trials to confirm these results are required. PMID:27610420

  15. An in silico algorithm for identifying stabilizing pockets in proteins: test case, the Y220C mutant of the p53 tumor suppressor protein.

    Science.gov (United States)

    Bromley, Dennis; Bauer, Matthias R; Fersht, Alan R; Daggett, Valerie

    2016-09-01

    The p53 tumor suppressor protein performs a critical role in stimulating apoptosis and cell cycle arrest in response to oncogenic stress. The function of p53 can be compromised by mutation, leading to increased risk of cancer; approximately 50% of cancers are associated with mutations in the p53 gene, the majority of which are in the core DNA-binding domain. The Y220C mutation of p53, for example, destabilizes the core domain by 4 kcal/mol, leading to rapid denaturation and aggregation. The associated loss of tumor suppressor functionality is associated with approximately 75 000 new cancer cases every year. Destabilized p53 mutants can be 'rescued' and their function restored; binding of a small molecule into a pocket on the surface of mutant p53 can stabilize its wild-type structure and restore its function. Here, we describe an in silico algorithm for identifying potential rescue pockets, including the algorithm's integration with the Dynameomics molecular dynamics data warehouse and the DIVE visual analytics engine. We discuss the results of the application of the method to the Y220C p53 mutant, entailing finding a putative rescue pocket through MD simulations followed by an in silico search for stabilizing ligands that dock into the putative rescue pocket. The top three compounds from this search were tested experimentally and one of them bound in the pocket, as shown by nuclear magnetic resonance, and weakly stabilized the mutant.

  16. Water, methanol and dense gas tracers in the local ULIRG Arp 220: results from the new SEPIA Band 5 Science Verification campaign

    Science.gov (United States)

    Galametz, M.; Zhang, Z.-Y.; Immer, K.; Humphreys, E.; Aladro, R.; De Breuck, C.; Ginsburg, A.; Madden, S. C.; Møller, P.; Arumugam, V.

    2016-10-01

    We present a line survey of the ultraluminous infrared galaxy Arp 220, taken with the newly installed SEPIA (Swedish-European Southern Observatory PI receiver for APEX) Band 5 instrument on APEX (Atacama Pathfinder Experiment). We illustrate the capacity of SEPIA to detect the 183.3 GHz H2O 31,3-22,0 line against the atmospheric H2O absorption feature. We confirm the previous detection of the HCN(2-1) line, and detect new transitions of standard dense gas tracers such as HNC(2-1), HCO+(2-1), CS(4-3), C34S(4-3) and HC3N(20-19). We also detect HCN(2-1) v2 = 1 and the 193.5 GHz methanol (4-3) group for the first time. The absence of time variations in the megamaser water line compared to previous observations seems to rule out an AGN nuclear origin for the line. It could, on the contrary, favour a thermal origin instead, but also possibly be a sign that the megamaser emission is associated with star-forming cores washed out in the beam. We finally discuss how the new transitions of HCN, HNC and HCO+ refine our knowledge of the interstellar medium physical conditions in Arp 220.

  17. Subarcsecond international LOFAR radio images of Arp 220 at 150 MHz: A kpc-scale star forming disk surrounding nuclei with shocked outflows

    CERN Document Server

    Varenius, E; Martí-Vidal, I; Aalto, S; Barcos-Muñoz, L; König, S; Pérez-Torres, M A; Deller, A T; Moldón, J; Gallagher, J S; Yoast-Hull, T M; Horellou, C; Morabito, L K; Alberdi, A; Jackson, N; Beswick, R; Carozzi, T D; Wucknitz, O; Ramírez-Olivencia, N

    2016-01-01

    We analyse new observations with the International Low Frequency Array (LOFAR) telescope, and archival data from the Multi-Element Radio Linked Interferometer Network (MERLIN) and the Karl G. Jansky Very Large Array (VLA). We model the spatially resolved radio spectrum of Arp 220 from 150 MHz to 33 GHz. We present an image of Arp 220 at 150 MHz with resolution $0.65''\\times0.35''$, sensitivity 0.15 mJy beam$^{-1}$, and integrated flux density $394\\pm59$ mJy. More than 80% of the detected flux comes from extended ($6''\\approx$2.2 kpc) steep spectrum ($\\alpha=-0.7$) emission, likely from star formation in the molecular disk surrounding the two nuclei. We find elongated features extending $0.3''$ (110 pc) and $0.9''$ (330 pc) from the eastern and western nucleus respectively, which we interpret as evidence for outflows. The extent of radio emission requires acceleration of cosmic rays far outside the nuclei. We find that a simple three component model can explain most of the observed radio spectrum of the galaxy...

  18. Low-Resolution Electromagnetic Tomography (LORETA) of changed Brain Function Provoked by Pro-Dopamine Regulator (KB220z) in one Adult ADHD case

    Science.gov (United States)

    Steinberg, Bruce; Blum, Kenneth; McLaughlin, Thomas; Lubar, Joel; Febo, Marcelo; Braverman, Eric R.; Badgaiyan, Rajendra D

    2016-01-01

    Attention Deficit-Hyperactivity Disorder (ADHD) often continues into adulthood. Recent neuroimaging studies found lowered baseline dopamine tone in the brains of affected individuals that may place them at risk for Substance Use Disorder (SUD). This is an observational case study of the potential for novel management of Adult ADHD with a non-addictive glutaminergic-dopaminergic optimization complex KB200z. Low-resolution electromagnetic tomography (LORETA) was used to evaluate the effects of KB220z on a 72-year-old male with ADHD, at baseline and one hour following administration. The resultant z-scores, averaged across Eyes Closed, Eyes Open and Working Memory conditions, increased for each frequency band, in the anterior, dorsal and posterior cingulate regions, as well as the right dorsolateral prefrontal cortex during Working Memory, with KB220z. These scores are consistent with other human and animal neuroimaging studies that demonstrated increased connectivity volumes in reward circuitry and may offer a new approach to ADHD treatment. However, larger randomized trials to confirm these results are required.

  19. ASTE Simultaneous HCN(4-3) and HCO+(4-3) Observations of the Two Luminous Infrared Galaxies NGC 4418 and Arp 220

    CERN Document Server

    Imanishi, Masatoshi; Yamada, Masako; Tamura, Yoichi; Kohno, Kotaro

    2010-01-01

    We report the results of HCN(J=4-3) and HCO+(J=4-3) observations of two luminous infrared galaxies (LIRGs), NGC 4418 and Arp 220, made using the Atacama Submillimeter Telescope Experiment (ASTE). The ASTE wide-band correlator provided simultaneous observations of HCN(4-3) and HCO+(4-3) lines, and a precise determination of their flux ratios. Both galaxies showed high HCN(4-3) to HCO+(4-3) flux ratios of >2, possibly due to AGN-related phenomena. The J = 4-3 to J = 1-0 transition flux ratios for HCN (HCO+) are similar to those expected for fully thermalized (sub-thermally excited) gas in both sources, in spite of HCN's higher critical density. If we assume collisional excitation and neglect an infrared radiative pumping process, our non-LTE analysis suggests that HCN traces gas with significantly higher density than HCO+. In Arp 220, we separated the double-peaked HCN(4-3) emission into the eastern and western nuclei, based on velocity information. We confirmed that the eastern nucleus showed a higher HCN(4-3)...

  20. Continuous on-line calibration of diffusive soil-atmosphere trace gas transport using vertical {sup 220}Rn- and {sup 222}Rn-activity profiles

    Energy Technology Data Exchange (ETDEWEB)

    Lehmann, B.E. [Bern Univ. (Switzerland). Physics Inst.; Neftel, A. [Inst. of Environmental Protection and Agriculture, Bern (Switzerland); Tarakanov, S.V. [Inst. of Silicate Chemistry, St. Petersburg (Russian Federation)

    2001-07-01

    Continuous monitoring of {sup 220}Rn- and {sup 222}Rn-activities above and below the soil surface combined with sporadic direct {sup 222}Rn-flux measurements is used to quantify diffusive trace gas transport in the air-filled pore space of soil, through the soil-atmosphere interface and in the lowest layers of the atmosphere. In a calm night, {sup 222}Rn-activities above the surface first build-up near the ground (z < 10 cm) and subsequently with a delay of 2-3 hours at higher altitudes (z < 5 m). Knowing (1) the {sup 222}Rn-flux from activity profiles measured in soil gas, (2) from direct flux determinations and (3) using information about atmospheric diffusion parameters from {sup 220}Rn-activities measured near the surface it is possible to model the temporal evolution of the vertical {sup 222}Rn-profiles in a night with stable weather and constant soil conditions. The system operates automatically for extended periods of time in the field enabling a better understanding of transport processes in response to changing environmental conditions (wind, rain, soil humidity). (orig.)

  1. The Arecibo Arp 220 Spectral Census I: Discovery of the Pre-Biotic Molecule Methanimine and New Cm-wavelength Transitions of Other Molecules

    CERN Document Server

    Salter, C J; Catinella, B; Lebron, M; Lerner, M S; Minchin, R; Momjian, E

    2008-01-01

    An on-going Arecibo line search between 1.1 and 10 GHz of the prototypical starburst/megamaser galaxy, Arp 220, has revealed a spectrum rich in molecular transitions. These include the ``pre-biotic'' molecules: methanimine (CH$_{2}$NH) in emission, three $v_{2}=1$ direct l-type absorption lines of HCN, and an absorption feature likely to be from either $^{18}$OH or formic acid (HCOOH). In addition, we report the detection of two, possibly three, transitions of $\\lambda$4-cm excited OH not previously detected in Arp~220 which are seen in absorption, and a possible absorption feature from the 6.668-GHz line of methanol. This marks the first distant extragalactic detection of methanimine, a pre-biotic molecule. Also, if confirmed, the possible methanol absorption line presented here would represent the first extragalactic detection of methanol at a distance further than 10 Mpc. In addition, the strong, previously undetected, cm-wave HCN $v_{2}=1$ direct l-type lines will aid the study of dense molecular gas and ...

  2. A study to evaluate the accuracy of ultrasound in the diagnosis of parotid lumps and to review the sonographic features of parotid lesions - results in 220 patients

    Energy Technology Data Exchange (ETDEWEB)

    Sriskandan, N., E-mail: neshe_s@hotmail.co [Department of Radiology, Eastbourne District General Hospital, Eastbourne, East Sussex (United Kingdom); Hannah, A.; Howlett, D.C. [Department of Radiology, Eastbourne District General Hospital, Eastbourne, East Sussex (United Kingdom)

    2010-05-15

    Aim: To assess the accuracy of ultrasound in characterizing benign and malignant parotid lesions and to review their sonographic features. Materials and methods: A retrospective analysis of 220 ultrasound examinations was undertaken in 220 patients who presented with palpable parotid lesions over an 11-year period and correlated with the clinico-histopathological findings. The original sonographic diagnosis was compared to the final histopathology and lesions characterized using previously established sonographic criteria. Results: Histopathology results were available for all patients. Two hundred and one patients had focal lesions: 29 carcinomas, 21 lymphomata and 151 benign lesions (including 69 pleomorphic adenomas and 54 Warthin's tumours); 19 patients did not have focal lesions. The initial ultrasound report was indeterminate in 25/201 focal lesions. In the remaining 176 lesions, the sensitivity, specificity, and diagnostic accuracy for malignancy of ultrasound was 91, 93, and 93%, respectively. There were four false-negatives and nine false-positives with a crossover of apparently benign and malignant features. Pleomorphic adenomas and Warthin's tumours were poorly differentiated using ultrasound. Additional impalpable parotid lesions or adenopathy were detected in 44 patients using ultrasound. Conclusion: Ultrasound is a valuable adjunct to clinical examination, accurately differentiating benign from malignant lesions and diagnosing non-focal disease. There is an overlap in features of pleomorphic adenomas and Warthin's tumours and of some benign and malignant lesions. Diagnostic ultrasound should be combined with needle biopsy in most patients to maximize diagnostic yield.

  3. Water, methanol and dense gas tracers in the local ULIRG Arp 220: Results from the new SEPIA Band 5 Science Verification campaign

    CERN Document Server

    Galametz, M; Immer, K; Humphreys, E; Aladro, R; De Breuck, C; Ginsburg, A; Madden, S C; Møller, P; Arumugam, V

    2016-01-01

    We present a line survey of the ultra-luminous infrared galaxy Arp 220, taken with the newly installed SEPIA Band 5 instrument on APEX. We illustrate the capacity of SEPIA to detect the 183.3 GHz H2O 31,3-22,0 line against the atmospheric H2O absorption feature. We confirm the previous detection of the HCN(2-1) line, and detect new transitions of standard dense gas tracers such as HNC(2-1), HCO+(2-1), CS(4-3), C34S(4-3), HC3N(20-19). We also detect HCN(2-1) v2=1 and the 193.5 GHz methanol (4-3) group for the first time. The absence of time variations in the megamaser water line compared to previous observations seems to rule out an AGN nuclear origin for the line. It could, on the contrary, favor a thermal origin instead, but also possibly be a sign that the megamaser emission is associated with star-forming cores washed-out in the beam. We finally discuss how the new transitions of HCN, HNC, HCO+ refine our knowledge of the ISM physical conditions in Arp 220.

  4. 220kV/3kA冷绝缘高温超导电缆电流引线设计%Design of Current Leads for 220 kV/3 kA Cold Dielectric High Temperature Superconduction Cables

    Institute of Scientific and Technical Information of China (English)

    程远; 王银顺; 郑志强; 张肖杰; 薛驰; 赵连岐

    2013-01-01

    电流引线的最小漏热优化和电气绝缘设计是220 kV/3 kA冷绝缘高温超导电缆终端设计的重要方面.为此,根据Weidemann-Franz定律分析了传导冷却方式下铜、铝材料电流引线的漏热情况,应用平均值法计算了最小漏热时铜、铝引线的长度、截面积、半径.结果表明,通过3 kA电流时,截面积240 mm2、长309.6 mm铜引线和截面积400 mm2、长308.0 mm铝引线均满足最小漏热要求,单根引线每kA电流漏热分别为42.7W和43.1 W.选用环氧树脂DW-3作为导体层电流引线的外部绝缘,制作样品进行了液氮环境下的工频击穿试验,得到了其击穿场强13 kV/mm,推导了绝缘厚度和低温终端内半径的关系.结果表明,220 kV低温终端内半径140 mm,铜引线DW-3绝缘厚度22.0 mm、铝引线DW-3绝缘厚度21.5 mm均能够满足绝缘强度要求,并可与常规220 kV室温终端配合.%Optimization design, including optimization of minimum heat-leakage and electrical insulation for current leads, is a significant aspect in the terminal design of 220 kV/3 kA cold dielectric (CD) high temperature superconducting (HTS) cables. We analyzed the heat leakage of conduction-cooled current leads made from copper or aluminum according to the Weidemann-Franz law, and obtained parameters, such as length, cross section, and radius, on condition of the minimum heat-leakage by using the average-value method. The results show that, carrying 3 kA current, copper leads with cross section of 240 mm2 and length of 309. 6 mm, and aluminum leads with cross section of 400 mm2 and length of 308. 0 mm can meet requirements of the minimum heat leakage design, and the corresponding single conductor heat leakage will be 42. 7 W and 43. 1 W per kA current, respectively. DW-3, a kind of epoxy resin which could withstand ultra-low temperature, was chosen as the insulation material of conduction-current leads, then AC breakdown strength of processed current lead samples at liquid N2

  5. 22O例医院感染病例分析%Analysis of 220 cases of nosocomial infections

    Institute of Scientific and Technical Information of China (English)

    翟红岩; 李小宝; 白玉红; 蒋静; 艾建红; 左大鹏

    2011-01-01

    目的 对2010年1-10月医院感染病例进行统计分析.研究发生医院感染的特点,以便采取控制措施.方法 采取前瞻性和回顾性相结合的调查方法,将科室、感染部位、细菌分离状况等作为相关因素进行比较分析,特别关注了层流病房、急诊ICU和呼吸ICU病原菌的特点.结果 医院感染的高发科室是层流病房、血液内科和呼吸重症监护病房,构成比分别为45.45%、13.18%和12.73%,排在前5位的医院感染依次是医院获得性肺炎、感染性发热、败血症、泌尿道感染和口腔感染,构成比分别为43.82%、11.98%、10.49%、7.87%和7.87%;引发医院感染的前5位的病原体构成比,依次是铜绿假单胞菌14.54%、鲍氏不动杆菌10.57%、酿脓链球菌8.81%、金黄色葡萄球菌7.49%、白色假丝酵母菌和大肠埃希菌均6.61%.结论 解放军307医院以收治血液肿瘤患者为主,骨髓移植是其特点,层流病房、血液内科和重症监护病房是医院感染的高发科室,医院获得性肺炎、感染性发烧、败血症为医院感染的主要疾病;因此,如何加强感染患者的管理,特别是当患者出现粒细胞减少时,如何积极采取预防感染的措施是非常重要的.%OBJECTIVE To analyze the characteristics and patterns of 220 cases of hospital infections from Jan to Oct, 2010, so as to take control measures for the hospital infection. METHODS The prospective and retrospective investigations were used in the study, the correlative factors including the department, the site of infection,bacterial isolates and other data were analyzed, especially compared to the characteristics of the pathogens in laminar flow unit, emergency ICU and respiratory ICU. RESULTS The incidence rates of nosocomial infection were high in Laminar flow unit, blood ward, intensive care unit, the constituent ratios, which were 45.45%,13.18% and 12. 73%, respectively. The top five ratios of constituent in the sites of

  6. Development of an integrated sampler based on direct {sup 222}Rn/{sup 220}Rn progeny sensors in flow-mode for estimating unattached/attached progeny concentration

    Energy Technology Data Exchange (ETDEWEB)

    Mishra, Rosaline, E-mail: rosaline@barc.gov.i [Radiological Physics and Advisory Division, Health, Safety and Environment Group, Bhabha Atomic Research Centre, Mumbai 400 085 (India); Sapra, B.K.; Mayya, Y.S. [Radiological Physics and Advisory Division, Health, Safety and Environment Group, Bhabha Atomic Research Centre, Mumbai 400 085 (India)

    2009-11-15

    A flow-mode integrated sampler consisting of a wire-mesh and filter-paper array along with passive solid state nuclear track detectors has been developed for estimating unattached and attached fraction of {sup 222}Rn/{sup 220}Rn progeny concentration. The essential element of this sampler is the direct {sup 222}Rn/{sup 220}Rn progeny sensor (DRPS/DTPS), which is an absorber-mounted-LR115 type nuclear track detector that selectively registers the alpha particles emitted from the progeny deposited on its surface. During sampling at a specified flow-rate, the unattached progeny is captured on the wire-mesh; while the attached progeny gets transmitted and is captured on the filter-paper. The alpha particles emitted by the deposited progeny atoms are registered on the sensors placed at a specified distance facing the wire-mesh and the filter-paper, respectively. The various steps involved in the development of this flow-mode direct progeny sampler such as the optimization of the sampling rate and the distance between the sensor and the deposition substrate are discussed. The sensitivity factor of the DTPS-loaded sampler for {sup 220}Rn progeny deposited on the wire-mesh and filter-paper is found to be 23.77 +- 0.64 (track cm{sup -2} h{sup -1}) (Bq m{sup -3}){sup -1} and 22.30 +- 0.18 (track cm{sup -2} h{sup -1}) (Bq m{sup -3}){sup -1}, respectively; while that of DRPS-loaded sampler for {sup 222}Rn progeny deposition, is 3.03 +- 0.14 (track cm{sup -2} h{sup -1}) (Bq m{sup -3}){sup -1} and 2.08 +- 0.07 (track cm{sup -2} h{sup -1}) (Bq m{sup -3}){sup -1}, respectively. The highlight of this flow-mode sampler is its high sensitivity and that it utilizes the passive technique for estimating the unattached and attached progeny concentration, thus doing away with the alpha counting procedures.

  7. A 300-mV 220-nW event-driven ADC with real-time QRS detection for wearable ECG sensors.

    Science.gov (United States)

    Zhang, Xiaoyang; Lian, Yong

    2014-12-01

    This paper presents an ultra-low-power event-driven analog-to-digital converter (ADC) with real-time QRS detection for wearable electrocardiogram (ECG) sensors in wireless body sensor network (WBSN) applications. Two QRS detection algorithms, pulse-triggered (PUT) and time-assisted PUT (t-PUT), are proposed based on the level-crossing events generated from the ADC. The PUT detector achieves 97.63% sensitivity and 97.33% positive prediction in simulation on the MIT-BIH Arrhythmia Database. The t-PUT improves the sensitivity and positive prediction to 97.76% and 98.59% respectively. Fabricated in 0.13 μm CMOS technology, the ADC with QRS detector consumes only 220 nW measured under 300 mV power supply, making it the first nanoWatt compact analog-to-information (A2I) converter with embedded QRS detector. PMID:25608283

  8. Unique 1D Co3O4 crystallized nanofibers with (220) oriented facets as high-performance lithium ion battery anode material

    Science.gov (United States)

    Tan, Yanli; Gao, Qiuming; Li, Zeyu; Tian, Weiqian; Qian, Weiwei; Yang, Chunxiao; Zhang, Hang

    2016-01-01

    A novel one-step hydrothermal and calcination strategy was developed to synthesize the unique 1D oriented Co3O4 crystal nanofibers with (220) facets on the carbon matrix derived from the natural, abundant and low cost wool fibers acting as both carbon precursor and template reagent. The resultant W2@Co3O4 nanocomposite exhibited very high specific capacity and favorable high-rate capability when used as anode material of lithium ion battery. The high reversible Li+ ion storage capacity of 986 mAh g−1 was obtained at 100 mA g−1 after 150 cycles, higher than the theoretical capacity of Co3O4 (890 mAh g−1). Even at the higher current density of 1 A g−1, the electrode could still deliver a remarkable discharge capacity of 720 mAh g−1 over 150 cycles. PMID:27217201

  9. LR-115 detector response to 222Rn, 220Rn and their progenies, exposed to hemispherical surfaces in free air, and design of a system to calculate their concentrations

    International Nuclear Information System (INIS)

    The sensitivities of LR-115 detectors to 222Rn and 220Rn chains in front of hemispherical surfaces of different radii are calculated by the Monte Carlo method. The optimum radii of hemispherical caps are determined, as a result contributions of the different α-emitter nuclei to the track density are differentiated and non-uniform track distribution is avoided. It is demonstrated that if eight detectors are exposed separately in front of the same number of hemispherical surfaces of different radii, the concentrations of each α emitter in airborne and deposited states can be determined. A passive integrating system to calculate the concentrations of radon, thoron and their progenies in free air is given

  10. Unique 1D Co3O4 crystallized nanofibers with (220) oriented facets as high-performance lithium ion battery anode material

    Science.gov (United States)

    Tan, Yanli; Gao, Qiuming; Li, Zeyu; Tian, Weiqian; Qian, Weiwei; Yang, Chunxiao; Zhang, Hang

    2016-05-01

    A novel one-step hydrothermal and calcination strategy was developed to synthesize the unique 1D oriented Co3O4 crystal nanofibers with (220) facets on the carbon matrix derived from the natural, abundant and low cost wool fibers acting as both carbon precursor and template reagent. The resultant W2@Co3O4 nanocomposite exhibited very high specific capacity and favorable high-rate capability when used as anode material of lithium ion battery. The high reversible Li+ ion storage capacity of 986 mAh g‑1 was obtained at 100 mA g‑1 after 150 cycles, higher than the theoretical capacity of Co3O4 (890 mAh g‑1). Even at the higher current density of 1 A g‑1, the electrode could still deliver a remarkable discharge capacity of 720 mAh g‑1 over 150 cycles.

  11. Observation of strong virtual scattering under three-beam (220, 371) X-ray diffraction in TeO2 single crystal

    International Nuclear Information System (INIS)

    A strong effect of virtual scattering has been experimentally observed when studying the nearly coplanar three-beam (220, 371) X-ray diffraction in a paratellurite single crystal under high-resolution double-crystal X-ray diffraction using MoKα1 radiation. One characteristic feature of this effect is that the angular dependence of the first (strong) reflection intensity and its shape barely change in the three-beam range of parameters, whereas very strong changes are observed for the second (weak) reflection not only in the three-beam range but also far beyond it, which is related to the variation in the two-beam diffraction parameter due to virtual scattering. The changes observed are asymmetric and make it possible to determine the triplet combination of structure-factor phases.

  12. UV spectroscopy of Titan's atmosphere, planetary organic chemistry and prebiological synthesis. II - Interpretation of new IUE observations in the 220-335 nm range

    Science.gov (United States)

    Courtin, Regis; Wagener, Richard; Mckay, Christopher P.; Caldwell, John; Fricke, Karl-Heinrich

    1991-01-01

    The theoretical model developed by McKay et al. (1989) to characterize the size distribution, thermal structure, and chemical composition of the stratospheric haze of Titan is applied to new 220-335-nm albedo measurements obtained with the long-wavelength prime camera of the IUE during August 1987. Data and model predictions are presented in extensive graphs and discussed in detail. It is shown that a simple model with particles of one size at a given altitude does not accurately reproduce the observed features in all spectral regions, but that good general agreement is obtained using a model with a uniformly mixed layer at 150-600 km and a bimodal distribution of small 'polymer' haze particles (radius less than 20 nm) and larger haze particles (radius 100-500 nm). The number densities implied by this model require, however, a mechanism such as electrostatic charging or reaction kinetics to inhibit coagulation of the smaller particles.

  13. DFT-D Investigation of the Interaction Between Ir(III) Based Photosensitizers and Small Silver Clusters Ag$_n$ ($n$=2-20, 92)

    CERN Document Server

    Bokareva, Olga S

    2013-01-01

    A dispersion-corrected density functional theory study of the photosensitizer [Ir(ppy)$_2$(bpy)]$^+$ and its derivatives bound to silver clusters Ag$_n$ ($n$=2-20, 92) is performed. The goal is to provide a new system-specific set of $C_{\\rm 6}^{}$ interaction parameters for Ag and Ir atoms. To this end a QM:QM scheme is employed using the PBE functional and RPA as well as MP2 calculation as a reference. The obtained $C_{\\rm 6}^{}$ coefficients were applied to calculate dissociation curves of selected IrPS-Ag$_n$ complexes and binding energies of derivatives containing oxygen and sulphur as heteroatoms in the ligands. Comparing different $C_{\\rm 6}^{}$ parameters it is concluded that RPA-based dispersion correction produces binding energies close to standard D2 and D3 models, whereas MP2-derived parameters overestimate these energies.

  14. Limits on Low-Mass WIMP Dark Matter with an Ultra-Low-Energy Germanium Detector at 220 eV Threshold

    CERN Document Server

    Lin, Shin-Ted

    2008-01-01

    An energy threshold of (220$\\pm$10) eV was achieved at an efficiency of 50% with a four-channel ultra-low-energy germanium detector each with an active mass of 5 g\\cite{wimppaper}. This provides a unique probe to WIMP dark matter with mass below 10 GeV. With low background data taken at the Kuo-Sheng Laboratory, constraints on WIMPs in the galactic halo were derived. Both spin-independent WIMP-nucleon and spin-dependent WIMP-neutron bounds improve over previous results for WIMP mass between 3$-$6 GeV. These results, together with those on spin-dependent couplings, will be presented. Sensitivities for full-scale experiments were projected. This detector technique makes the unexplored sub-keV energy window accessible for new neutrino and dark matter experiments.

  15. Study of Gamow-Teller transitions from 132Sn via the (p,n reaction at 220 MeV/u in inverse kinematics

    Directory of Open Access Journals (Sweden)

    Sasano M.

    2016-01-01

    Full Text Available The charge-exchange (p,n reaction at 220 MeV has been measured to extract the strength distribution of Gamow-Teller transitions from the doubly magic unstable nucleus 132Sn. A recently developed experimental technique of measuring the (p,n reaction in inverse kinematics has been applied to the study of unstable nuclei in the mass region around A∼100 for the first time. We have combined the low-energy neutron detector WINDS and the SAMURAI spectrometer at the RIKEN radioactive isotope beam factory (RIBF. The particle identification plot for the reaction residues obtained by the spectrometer provides the clear separation of the CE reaction channel from other background events, enabling us to identify kinematic curves corresponding the (p, n reaction. Further analysis to reconstruct the excitation energy spectrum is ongoing.

  16. Studies on the Equilibrium of {sup 220}Rn (Thoron) and its Daughters in the Atmosphere of a Monazite Plant and its Environs

    Energy Technology Data Exchange (ETDEWEB)

    Pillai, P.M.B.; Paul, A.C

    1999-07-01

    Studies carried out at the Monazite processing plant of Indian Rare Earths Ltd, at Udyogamandal, Kerala have shown that the mean ratio of the airborne concentrations of {sup 212}Bi to {sup 212}Pb were 0.20 {+-} 0.08 and 0.55 {+-} 0.21 for the process plant atmosphere and outside atmosphere respectively. The mean equilibrium factor, F, for {sup 220}Rn and daughters in the plant is found to be 0.003 {+-} 0.002. This value is 6 times lower than the F value for the outside atmosphere which is 0.02 {+-} 0.01. The equilibrium factors determined facilitate internal dose estimation in monazite and thorium processing plants. (author)

  17. Observation of strong virtual scattering under three-beam (220, 371) X-ray diffraction in TeO{sub 2} single crystal

    Energy Technology Data Exchange (ETDEWEB)

    Blagov, A. E.; Kovalchuk, M. V. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Kohn, V. G. [Kurchatov Institute, Russian Research Centre (Russian Federation); Pisarevskii, Yu. V.; Prosekov, P. A., E-mail: aopt@ns.crys.ras.ru [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

    2010-01-15

    A strong effect of virtual scattering has been experimentally observed when studying the nearly coplanar three-beam (220, 371) X-ray diffraction in a paratellurite single crystal under high-resolution double-crystal X-ray diffraction using MoK{sub {alpha}1} radiation. One characteristic feature of this effect is that the angular dependence of the first (strong) reflection intensity and its shape barely change in the three-beam range of parameters, whereas very strong changes are observed for the second (weak) reflection not only in the three-beam range but also far beyond it, which is related to the variation in the two-beam diffraction parameter due to virtual scattering. The changes observed are asymmetric and make it possible to determine the triplet combination of structure-factor phases.

  18. OBSERVATIONS OF Arp 220 USING HERSCHEL-SPIRE: AN UNPRECEDENTED VIEW OF THE MOLECULAR GAS IN AN EXTREME STAR FORMATION ENVIRONMENT

    Energy Technology Data Exchange (ETDEWEB)

    Rangwala, Naseem; Maloney, Philip R.; Glenn, Jason; Kamenetzky, Julia [Center for Astrophysics and Space Astronomy, University of Colorado, 1255 38th street, Boulder, CO 80303 (United States); Wilson, Christine D.; Mentuch, Erin; Schirm, Maximilien R. P. [Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (Canada); Rykala, Adam [School of Physics and Astronomy, Cardiff University, Queens Buildings The Parade, Cardiff CF24 3AA (United Kingdom); Isaak, Kate [ESA Astrophysics Missions Division, ESTEC, PO Box 299, 2200 AG Noordwijk (Netherlands); Baes, Maarten [Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent (Belgium); Bendo, George J. [UK ALMA Regional Centre Node, Jordell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL (United Kingdom); Boselli, Alessandro [Laboratoire d' Astrophysique de Marseille, UMR6110 CNRS, 38 rue F. Joliot-Curie, F-13388 Marseille (France); Bradford, Charles M. [JPL, Pasadena, CA 91109 (United States); Clements, D. L. [Astrophysics Group, Imperial College, Blackett Laboratory, Prince Consort Road, London SW7 2AZ (United Kingdom); Cooray, Asantha [Department of Physics and Astronomy, University of California, Irvine, CA 92697 (United States); Fulton, Trevor; Imhof, Peter [Blue Sky Spectroscopy Inc, Suite 9-740 4th Avenue South, Lethbridge, Alberta T1J 0N9 (Canada); Madden, Suzanne C.; Sauvage, Marc [CEA, Laboratoire AIM, Irfu/SAp, Orme des Merisiers, F-91191 Gif-sur-Yvette (France); Sacchi, Nicola [Istituto di Fisica dello Spazio Interplanetario, INAF, Via del Fosso del Cavaliere 100, I-00133 Roma (Italy); and others

    2011-12-10

    We present Herschel Spectral and Photometric Imaging Receiver Fourier Transform Spectrometer (Herschel SPIRE-FTS) observations of Arp 220, a nearby ultra-luminous infrared galaxy. The FTS provides continuous spectral coverage from 190 to 670 {mu}m, a wavelength region that is either very difficult to observe or completely inaccessible from the ground. The spectrum provides a good measurement of the continuum and detection of several molecular and atomic species. We detect luminous CO (J = 4-3 to 13-12) and water rotational transitions with comparable total luminosity {approx}2 Multiplication-Sign 10{sup 8} L{sub Sun }; very high-J transitions of HCN (J = 12-11 to 17-16) in absorption; strong absorption features of rare species such as OH{sup +}, H{sub 2}O{sup +}, and HF; and atomic lines of [C I] and [N II]. The modeling of the continuum shows that the dust is warm, with T = 66 K, and has an unusually large optical depth, with {tau}{sub dust} {approx} 5 at 100 {mu}m. The total far-infrared luminosity of Arp 220 is L{sub FIR} {approx} 2 Multiplication-Sign 10{sup 12} L{sub Sun }. Non-LTE modeling of the extinction corrected CO rotational transitions shows that the spectral line energy distribution of CO is fit well by two temperature components: cold molecular gas at T {approx} 50 K and warm molecular gas at T {approx} 1350{sup +280}{sub -100} K (the inferred temperatures are much lower if CO line fluxes are not corrected for dust extinction). These two components are not in pressure equilibrium. The mass of the warm gas is 10% of the cold gas, but it dominates the CO luminosity. The ratio of total CO luminosity to the total FIR luminosity is L{sub CO}/L{sub FIR} {approx} 10{sup -4} (the most luminous lines, such as J = 6-5, have L{sub CO,J=6-5}/L{sub FIR} {approx} 10{sup -5}). The temperature of the warm gas is in excellent agreement with the observations of H{sub 2} rotational lines. At 1350 K, H{sub 2} dominates the cooling ({approx}20 L{sub Sun} M{sup -1}{sub

  19. A 455 nW 220 fJ/conversion-step 12 bits 2 kS/s SAR ADC for portable biopotential acquisition systems

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Hui; Qin Yajie; Yang Siyu; Hong Zhiliang, E-mail: yajieqin@fudan.edu.cn [State Key Laboratory of ASIC and System, Fudan University, Shanghai 201203 (China)

    2011-01-15

    An ultra-low power 12 bits 2 kS/s successive approximation register analog-to-digital converter (ADC) is presented. For power optimization, the voltage supply of the digital part is lowered, and the offset voltage of the latch is self-calibrated. Targeted for better linearity and lower noise, an improved digital-to-analog converter capacitor array layout strategy is presented, and a low kick-back noise latch is proposed. The chip was fabricated by using 0.18 {mu}m 1P6M CMOS technology. The ADC achieves 61.8 dB SNDR and dissipates 455 nW only, resulting in a figure of merit of 220 fJ/conversion-step. The ADC core occupies an active area of only 674 x 639 {mu}m{sup 2}. (semiconductor integrated circuits)

  20. Free-flight Performance of a Rocket-boosted, Air-launched 16-inch-diameter Ram-jet Engine at Mach Numbers up to 2.20

    Science.gov (United States)

    Disher, John H; Kohl, Robert C; Jones, Merle L

    1953-01-01

    The investigation of air-launched ram-jet engines has been extended to include a study of models with a nominal design free-stream Mach number of 2.40. These models require auxiliary thrust in order to attain a flight speed at which the ram jet becomes self-accelerating. A rocket-boosting technique for providing this auxiliary thrust is described and time histories of two rocket-boosted ram-jet flights are presented. In one flight, the model attained a maximum Mach number of 2.20 before a fuel system failure resulted in the destruction of the engine. Performance data for this model are presented in terms of thrust and drag coefficients, diffuser pressure recovery, mass-flow ratio, combustion efficiency, specific fuel consumption, and over-all engine efficiency.