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Sample records for dysprosium 168

  1. Dysprosium magneto-optical traps

    CERN Document Server

    Youn, Seo Ho; Ray, Ushnish; Lev, Benjamin L

    2010-01-01

    Magneto-optical traps (MOTs) of highly magnetic lanthanides open the door to explorations of novel phases of strongly correlated matter such as lattice supersolids and quantum liquid crystals. We recently reported the first MOTs of the five high abundance isotopes of the most magnetic atom, dysprosium. Described here are details of the experimental technique employed for repumper-free Dy MOTs containing up to half a billion atoms. Extensive characterization of the MOTs' properties---population, temperature, loading, metastable decay dynamics, trap dynamics---is provided.

  2. On polymorphism of dysprosium trichloride

    Energy Technology Data Exchange (ETDEWEB)

    Zakiryanova, Irina D.; Khokhlov, Vladimir A.; Salyulev, Alexander B.; Korzun, Iraida V. [RAS Ural Branch, Ekaterinburg (Russian Federation). Institute of High-Temperature Electrochemistry

    2015-07-01

    For the first time, the structure of crystalline DyCl{sub 3} over a wide temperature range from room temperature to melting point was studied by Raman spectroscopy. The phonon modes (cm{sup -1}) of dysprosium trichloride (monoclinic crystal lattice of AlCl{sub 3} type, Z = 4, CN = 6) at room temperature are 257 (A{sub 1g}), 201 (E{sub g}), 112 (E{sub g}), 88 (A{sub 1g}), and 63 (E{sub g}). The monoclinic structure of the crystalline DyCl{sub 3} C{sub 2h}{sup 3} symmetry was found to remain constant over the studied temperature range. No polymorphic transformation in the solid state was detected. Gravimetry, calorimetry, and mass spectrometry have been used in addition to support the conclusions made on the basis of Raman spectroscopic data.

  3. Resonance ionization spectroscopy in dysprosium

    Energy Technology Data Exchange (ETDEWEB)

    Studer, D., E-mail: dstuder@uni-mainz.de; Dyrauf, P.; Naubereit, P.; Heinke, R.; Wendt, K. [Johannes Gutenberg-Universität Mainz, Institut für Physik (Germany)

    2017-11-15

    We report on resonance ionization spectroscopy (RIS) of high-lying energy levels in dysprosium. We developed efficient excitation schemes and re-determined the first ionization potential (IP) via analysis of Rydberg convergences. For this purpose both two- and three-step excitation ladders were investigated. An overall ionization efficiency of 25(4) % could be demonstrated in the RISIKO mass separator of Mainz University, using a three-step resonance ionization scheme. Moreover, an extensive analysis of the even-parity 6sns- and 6snd-Rydberg-series convergences, measured via two-step excitation was performed. To account for strong perturbations in the observed s-series, the approach of multichannel quantum defect theory (MQDT) was applied. Considering all individual series limits we extracted an IP-value of 47901.76(5) cm{sup −1}, which agrees with the current literature value of 47901.7(6) cm{sup −1}, but is one order of magnitude more precise.

  4. The dysprosium-tin phase diagram

    Energy Technology Data Exchange (ETDEWEB)

    Eremenko, V.N.; Bulanova, M.V.; Martsenjuk, P.S. (I.N. Frantsevich Inst. for Problems of Materials Science, Kiev (Ukraine))

    1992-12-07

    The dysprosium-tin phase diagram was established by means of differential thermal, X-ray and microscopic analyses of 22 alloys. Seven intermetallic compounds were found to exist in the system. Dy[sub 5]Sn[sub 3] melts congruently at 1870 degC, and undergoes a polymorphous transformation at 1823 [+-] 6 degC. The intermetallics Dy[sub 5]Sn[sub 4], Dy[sub 11]Sn[sub 10], DySn, Dy[sub 4]Sn[sub 5], DySn[sub 2], DySn[sub 3] are formed peritectically at 1712 [+-]11, 1605 [+-]12, 1208 [+-]3, 1166 [+-]7, 1138 [+-]3 and 747 [+-]6 degC respectively. DySn[sub 3] exists in a narrow temperature range, in two polymorphous modifications. The transformation [beta]-DySn[sub 3] [yields] [alpha]-DySn[sub 3] occurs at 608 [+-] 12 degC, and at 499 [+-]2 degC [alpha]-DySn[sub 3] decomposes to DySn[sub 2] and the tin-rich melt. The dysprosium-rich eutectic crystallizes at 1204 [+-]10 degC and contains 13 at.% tin. The solid-state solubility of tin in dysprosium is about 3 at.%, and that of dysprosium in tin is negligible.

  5. Towards a new measurement of parity violation in dysprosium

    CERN Document Server

    Leefer, N; Antypas, D; Budker, D

    2014-01-01

    The dysprosium parity violation experiment concluded nearly 17 years ago with an upper limit on weak interaction induced mixing of nearly degenerate, opposite parity states in atomic dysprosium. While that experiment was limited in sensitivity by statistics, a new apparatus constructed in the interim for radio-frequency spectroscopy is expected to provide significant improvements to the statistical sensitivity. Preliminary work from the new PV experiment in dysprosium is presented with a discussion of the current statistical sensitivity and outlook.

  6. Dysprosium Modification of Cobalt Ferrite Ionic Magnetic Fluids

    Institute of Scientific and Technical Information of China (English)

    JIANG Rong-li; LIU Yong-chao; GENG Quan-rong; ZHAO Wen-tao

    2005-01-01

    Dysprosium composite cobalt ferrite ionic magnetic fluids were prepared by precipitation in the presence of Tri-sodium citrate. Influence of dysprosium modification on magnetic property is studied. The result shows that magnetic response toward exterior magnetic field can be improved by adding Dy3+. Studies also show that the increase of reaction temperature may improve the modification effect of dysprosium. By adding dysprosium ions, the average diameter of the magnetic nanoparticles will be decreased evidently. It is clear that the particles appear as balls, Cobalt ferrite with sizes of 12-15 nm, rare earth composite cobalt ferrite with sizes of 6-8 nm.

  7. Can a dysprosium shortage threaten green energy technologies?

    NARCIS (Netherlands)

    Hoenderdaal, S.; Tercero Espinoza, L.; Marschneider-Weidemann, F.; Crijns - Graus, Wina

    2013-01-01

    Dysprosium, one of the various rare earth elements, is currently for more than 99% mined in China. As China is reducing its exports, new mining projects outside of China are needed to sustain supply and meet future demands. Dysprosium is mainly used in permanent magnets to retain the magnet's streng

  8. Phenalenyl-based mononuclear dysprosium complexes

    Directory of Open Access Journals (Sweden)

    Yanhua Lan

    2016-07-01

    Full Text Available The phenalenyl-based dysprosium complexes [Dy(PLN2(HPLNCl(EtOH] (1, [Dy(PLN3(HPLN]·[Dy(PLN3(EtOH]·2EtOH (2 and [Dy(PLN3(H2O2]·H2O (3, HPLN being 9-hydroxy-1H-phenalen-1-one, have been synthesized. All compounds were fully characterized by means of single crystal X-ray analysis, paramagnetic 1H NMR, MALDI-TOF mass spectrometry, UV–vis spectrophotometry and magnetic measurements. Both static (dc and dynamic (ac magnetic properties of these complexes have been investigated, showing slow relaxation of magnetization, indicative of single molecule magnet (SMM behavior. Attempts to synthesize sublimable phenalenyl-based dysprosium complexes have been made by implementing a synthetic strategy under anhydrous conditions. The sublimed species were characterized and their thermal stability was confirmed. This opens up the possibility to deposit phenalenyl-based lanthanides complexes by sublimation onto surfaces, an important prerequisite for ongoing studies in molecular spintronics.

  9. Anisotropy in the Interaction of Ultracold Dysprosium

    CERN Document Server

    Kotochigova, Svetlana

    2011-01-01

    The nature of the interaction between ultracold atoms with a large orbital and spin angular momentum has attracted considerable attention. It was suggested that such interactions can lead to the realization of exotic states of highly correlated matter. Here, we report on a theoretical study of the competing anisotropic dispersion, magnetic dipole-dipole, and electric quadrupole-quadrupole forces between two dysprosium atoms. Each dysprosium atom has an orbital angular momentum L=6 and magnetic moment $\\mu=10\\mu_B$. We show that the dispersion coefficients of the ground state adiabatic potentials lie between 1865 a.u. and 1890 a.u., creating a non-negligible anisotropy with a spread of 25 a.u. and that the electric quadrupole-quadrupole interaction is weak compared to the other interactions. We also find that for interatomic separations $R< 50\\,a_0$ both the anisotropic dispersion and magnetic dipole-dipole potential are larger than the atomic Zeeman splittings for external magnetic fields of order 10 G to ...

  10. Spectroscopy of Neutron-Rich $^{168,170}$Dy: Yrast Band Evolution Close to the $N_{p}N_{n}$ Valence Maximum

    CERN Document Server

    Söderström, P A; Regan, P H; Algora, A; de Angelis, G; Ashley, S F; Aydin, S; Bazzacco, D; Casperson, R J; Catford, W N; Cederkäll, J; Chapman, R; Corradi, L; Fahlander, C; Farnea, E; Fioretto, E; Freeman, S J; Gadea, A; Gelletly, W; Gottardo, A; Grodner, E; He, C Y; Jones, G A; Keyes, K; Labiche, M; Liang, X; Liu, Z; Lunardi, S; Muarginean, N; Mason, P; Menegazzo, R; Mengoni, D; Montagnoli, G; Napoli, D; Ollier, J; Pietri, S; Podolyák, Z; Pollarolo, G; Recchia, F; Şahin, E; Scarlassara, F; Silvestri, R; Smith, J F; Spohr, K M; Steer, S J; Stefanini, A M; Szilner, S; Thompson, N J; Tveten, G M; Ur, C A; Valiente-Dobón, J J; Werner, V; Williams, S J; Xu, F R; Zhu, J Y

    2010-01-01

    The yrast sequence of the neutron-rich dysprosium isotope Dy-168 has been studied using multi-nucleon transfer reactions following the collision of a 460-MeV Se-82 beam and a Er-170 target. The reaction products were identified using the PRISMA magnetic spectrometer and the gamma rays detected using the CLARA HPGe-detector array. The 2+ and 4+ members of the previously measured ground state rotational band of Dy-168 was confirmed and the yrast band extended up to 10+. A tentative candidate for the 4+ to 2+ transition in Dy-170 was also identified. The data on this and lighter even-even dysprosium isotopes are interpreted in terms of Total Routhian Surface calculations and the evolution of collectivity approaching the proton-neutron valence product maximum is discussed.

  11. First search for double $\\beta$ decay of dysprosium

    CERN Document Server

    Belli, P; Cappella, F; Cerulli, R; Danevich, F A; d'Angelo, S; Di Vacri, M L; Incicchitti, A; Laubenstein, M; Nagorny, S S; Nisi, S; Tolmachev, A V; Tretyak, V I; Yavetskiy, R P

    2011-01-01

    A search for double $\\beta$ decay of dysprosium was realized for the first time with the help of an ultra low-background HP Ge $\\gamma$ detector. After 2512 h of data taking with a 322 g sample of dysprosium oxide limits on double beta processes in $^{156}$Dy and $^{158}$Dy have been established on the level of $T_{1/2}\\geq 10^{14}-10^{16}$ yr. Possible resonant double electron captures in $^{156}$Dy and $^{158}$Dy were restricted on a similar level. As a by-product of the experiment we have measured the radioactive contamination of the Dy$_2$O$_3$ sample and set limits on the $\\alpha$ decay of dysprosium isotopes to the excited levels of daughter nuclei as $T_{1/2}\\geq 10^{15} - 10^{17}$ yr.

  12. Neutron resonance parameters of dysprosium isotopes using neutron capture yields

    Energy Technology Data Exchange (ETDEWEB)

    Shin, S. G.; Kye, Y. U.; Cho, M. H. [POSTECH, Pohang (Korea, Republic of); Namkung, W. [Pohang Accelerator Laboratory, Pohang (Korea, Republic of); Kim, G. N. [Kyungpook National University, Daegu (Korea, Republic of); Lee, M. W.; Kang, Y. R. [Dongnam Inst. Of Radiological and Medical Science, Busan (Korea, Republic of)

    2015-10-15

    Dysprosium is used in the field of nuclear reactor system because it has a very large thermal neutron absorption cross-section. The dysprosium alloyed with special stainless steels is attractive for control in nuclear reactor because of the ability to absorb neutrons readily without swelling or contracting over time and its high melting point. Dysprosium is also one of fission products from the thermal fission of {sup 234}U, {sup 233}U, and {sup 239}Pu. The fission products are accumulated in the reactor core by the burn-up of the nuclear fuel and the poison effect is increased. Therefore, it is required to understand how Dysprosium as both a poison and an absorbing material in the control rod has an effect on the neutron population in a nuclear reactor system over all energy regions. Neutron Capture experiments on Dy isotopes were performed at the electron linear accelerator (LINAC) facility of the Rensselear Polytechnic Institute (RPI) in the neutron energy region from 10 eV to 1 keV. Resonance parameters were extracted by fitting the neutron capture data using the SAMMY multilevel R-matrix Bayesian code.

  13. Properties of Polydisperse Tin-doped Dysprosium and Indium Oxides

    Directory of Open Access Journals (Sweden)

    Malinovskaya Tatyana

    2017-01-01

    Full Text Available The results of investigations of the complex permittivity, diffuse-reflectance, and characteristics of crystal lattices of tin-doped indium and dysprosium oxides are presented. Using the methods of spectroscopy and X-ray diffraction analysis, it is shown that doping of indium oxide with tin results in a significant increase of the components of the indium oxide complex permittivity and an appearance of the plasma resonance in its diffuse-reflectance spectra. This indicates the appearance of charge carriers with the concentration of more than 1021 cm−3 in the materials. On the other hand, doping of the dysprosium oxide with the same amount of tin has no effect on its optical and electromagnetic properties.

  14. Dysprosium titanate as an absorber material for control rods

    Science.gov (United States)

    Risovany, V. D.; Varlashova, E. E.; Suslov, D. N.

    2000-09-01

    Disprosium titanate is an attractive control rod material for the thermal neutron reactors. Its main advantages are: insignificant swelling, no out-gassing under neutron irradiation, rather high neutron efficiency, a high melting point (˜1870°C), non-interaction with the cladding at temperatures above 1000°C, simple fabrication and easily reprocessed non-radioactive waste. It can be used in control rods as pellets and powder. The disprosium titanate control rods have worked off in the MIR reactor for 17 years, in VVER-1000 - for 4 years without any operating problems. After post-irradiation examinations this type of control rod having high lifetime was recommended for the VVER and RBMK. The paper presents the examination results of absorber element dummies containing dysprosium titanate, irradiated in the SM reactor to the neutron fluence of 3.4×10 22 cm -2 ( E>0.1 MeV) and, also, the data on structure, thermal-physical properties of dysprosium titanate, efficiency of dysprosium titanate control rods.

  15. 16 CFR 16.8 - Closed meetings.

    Science.gov (United States)

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Closed meetings. 16.8 Section 16.8... COMMITTEE MANAGEMENT § 16.8 Closed meetings. (a) Paragraphs (e), (f), and (g) of § 16.7 of this part, which require that meetings shall be open to the public and that the public shall be afforded an opportunity...

  16. 21 CFR 168.122 - Lactose.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Lactose. 168.122 Section 168.122 Food and Drugs... § 168.122 Lactose. (a) Lactose is the carbohydrate normally obtained from whey. It may be anhydrous or... the following specifications: (1) The lactose content is not less than 98.0 percent, mass over mass...

  17. 21 CFR 168.160 - Sorghum sirup.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Sorghum sirup. 168.160 Section 168.160 Food and... § 168.160 Sorghum sirup. (a) Sorghum sirup is the liquid food derived by concentration and heat treatment of the juice of sorghum cane (sorgos) (Sorghum vulgare). It contains not less than 74 percent...

  18. 32 CFR 168a.5 - Responsibilities.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Responsibilities. 168a.5 Section 168a.5 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE DEFENSE CONTRACTING NATIONAL DEFENSE SCIENCE AND ENGINEERING GRADUATE FELLOWSHIPS § 168a.5 Responsibilities. (a) The Deputy Director,...

  19. 25 CFR 168.5 - Grazing capacity.

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Grazing capacity. 168.5 Section 168.5 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING REGULATIONS FOR THE HOPI PARTITIONED LANDS AREA § 168.5 Grazing capacity. (a) The Area Director shall prescribe the maximum number of...

  20. 33 CFR 168.10 - Responsibilities.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Responsibilities. 168.10 Section 168.10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY ESCORT REQUIREMENTS FOR CERTAIN TANKERS § 168.10 Responsibilities. (a) The tanker...

  1. 46 CFR 168.15-10 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Construction. 168.15-10 Section 168.15-10 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS CIVILIAN NAUTICAL SCHOOL VESSELS Accommodations § 168.15-10 Construction. (a) The accommodations provided must be securely constructed,...

  2. Dysprosium electrodeposition from a hexaalkylguanidinium-based ionic liquid

    Science.gov (United States)

    Berger, Claudia A.; Arkhipova, Maria; Maas, Gerhard; Jacob, Timo

    2016-07-01

    The rare-earth element dysprosium (Dy) is an important additive that increases the magnetocrystalline anisotropy of neodymium magnets and additionally prevents from demagnetizing at high temperatures. Therefore, it is one of the most important elements for high-tech industries and is mainly used in permanent magnetic applications, for example in electric vehicles, industrial motors and direct-drive wind turbines. In an effort to develop a more efficient electrochemical technique for depositing Dy on Nd-magnets in contrast to commonly used costly physical vapor deposition, we investigated the electrochemical behavior of dysprosium(iii) trifluoromethanesulfonate in a custom-made guanidinium-based room-temperature ionic liquid (RTIL). We first examined the electrodeposition of Dy on an Au(111) model electrode. The investigation was carried out by means of cyclic voltammetry (CV) and X-ray photoelectron spectroscopy (XPS). The initial stages of metal deposition were followed by in situ scanning tunneling microscopy (STM). CV measurements revealed a large cathodic reduction peak, which corresponds to the growth of monoatomic high islands, based on STM images taken during the initial stages of deposition. XPS identified these deposited islands as dysprosium. A similar reduction peak was also observed on an Nd-Fe-B substrate, and positively identified as deposited Dy using XPS. Finally, we varied the concentration of the Dy precursor, electrolyte flow and temperature during Dy deposition and demonstrated that each of these parameters could be used to increase the thickness of the Dy deposit, suggesting that these parameters could be tuned simultaneously in a temperature-controlled flow cell to enhance the thickness of the Dy layer.The rare-earth element dysprosium (Dy) is an important additive that increases the magnetocrystalline anisotropy of neodymium magnets and additionally prevents from demagnetizing at high temperatures. Therefore, it is one of the most important

  3. 46 CFR 168.15-15 - Size.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Size. 168.15-15 Section 168.15-15 Shipping COAST GUARD... § 168.15-15 Size. (a) Sleeping accommodations must be divided into rooms, no one of which may berth more... accommodate, must be marked outside the space. (b) Each room must be of such size that there is at least 1.8...

  4. 25 CFR 168.13 - Fences.

    Science.gov (United States)

    2010-04-01

    ... § 168.13 Fences. Fencing will be erected by the Federal Government around the perimeter of the 1882... partitioned to each tribe by the Judgment of Partition of April 18, 1979. Fencing of other areas in the former... established under § 168.4. Such fencing shall be erected at Government expense and ownership shall be...

  5. Dicty_cDB: CHF168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available CH (Link to library) CHF168 (Link to dictyBase) - - - Contig-U16361-1 - (Link to Original site) - - CHF1...68Z 536 - - - - Show CHF168 Library CH (Link to library) Clone ID CHF168 (Link to dicty...iol.tsukuba.ac.jp/CSM/CH/CHF1-C/CHF168Q.Seq.d/ Representative seq. ID - (Link to ...Original site) Representative DNA sequence >CHF168 (CHF168Q) /CSM/CH/CHF1-C/CHF168Q.Seq.d/ XXXXXXXXXXAAGAGAC... E Sequences producing significant alignments: (bits) Value CHF168 (CHF168Q) /CSM/CH/CHF1-C/CHF1

  6. Dicty_cDB: SFI168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SF (Link to library) SFI168 (Link to dictyBase) - - - Contig-U10808-1 SFI168P (Link to Original site) SF...I168F 564 SFI168Z 725 SFI168P 1279 - - Show SFI168 Library SF (Link to library) Clone ID SF...e URL http://dictycdb.biol.tsukuba.ac.jp/CSM/SF/SFI1-C/SFI168Q.Seq.d/ Representative seq. ID SF...I168P (Link to Original site) Representative DNA sequence >SFI168 (SFI168Q) /CSM/SF/SFI1-C/SFI...l**sncglilifflils*fln*IKMMKPDLNSPLPQS PQLQSFGSRSSDLATEDLFLKKLEAISQTAPNETVKNEFLNKE

  7. 42 CFR 423.168 - Accreditation organizations.

    Science.gov (United States)

    2010-10-01

    ....168 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES... organization's accreditation process that accreditation no longer provides assurance that the Medicare... limited to the following: (i) Reviewing documents. (ii) Auditing meetings concerning the...

  8. Dicty_cDB: SLF168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SL (Link to library) SLF168 (Link to dictyBase) - - - Contig-U16368-1 SLF168Z (Link... to Original site) - - SLF168Z 504 - - - - Show SLF168 Library SL (Link to library) Clone ID SLF168 (Link to...ycdb.biol.tsukuba.ac.jp/CSM/SL/SLF1-C/SLF168Q.Seq.d/ Representative seq. ID SLF16...8Z (Link to Original site) Representative DNA sequence >SLF168 (SLF168Q) /CSM/SL/SLF1-C/SLF168Q.Seq.d/ XXXXX...LG750 (SLG750Q) /CSM/SL/SLG7-C/SLG750Q.Seq.d/ 999 0.0 SLF168 (SLF168Q) /CSM/SL/SLF1-C/SLF168Q.Seq.d/ 999 0.0

  9. Dicty_cDB: SSH168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SS (Link to library) SSH168 (Link to dictyBase) - - - Contig-U15567-1 SSH168P (Link to Original site) SSH...168F 329 SSH168Z 641 SSH168P 970 - - Show SSH168 Library SS (Link to library) Clone ID SSH... URL http://dictycdb.biol.tsukuba.ac.jp/CSM/SS/SSH1-C/SSH168Q.Seq.d/ Representative seq. ID SSH...168P (Link to Original site) Representative DNA sequence >SSH168 (SSH168Q) /CSM/SS/SSH1-C/SSH1... producing significant alignments: (bits) Value SSH168 (SSH168Q) /CSM/SS/SSH1-C/SSH

  10. Dicty_cDB: AFM168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available AF (Link to library) AFM168 (Link to dictyBase) - - - - - (Link to Original site) AFM...168F 592 - - - - - - Show AFM168 Library AF (Link to library) Clone ID AFM168 (Link to dictyBase) Atlas ID... - NBRP ID - dictyBase ID - Link to Contig - Original site URL http://dictycdb.biol.tsukuba.ac.jp/CSM/AF/AFM1-C/AFM...168Q.Seq.d/ Representative seq. ID - (Link to Original site) Representative DNA sequence >AFM...168 (AFM168Q) /CSM/AF/AFM1-C/AFM168Q.Seq.d/ ATTAAACTTTTTGTCACATATATAATTAAATAAAATGTCAGAAAG

  11. Dicty_cDB: SFC168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SF (Link to library) SFC168 (Link to dictyBase) - G21953 DDB0168487 Contig-U09012-1 SFC...168P (Link to Original site) SFC168F 484 SFC168Z 753 SFC168P 1237 - - Show SFC168 Library SF (Link to library) Clone ID SFC...Contig-U09012-1 Original site URL http://dictycdb.biol.tsukuba.ac.jp/CSM/SF/SFC1-C/SFC...168Q.Seq.d/ Representative seq. ID SFC168P (Link to Original site) Representative DNA sequence >SFC168 (SFC168Q) /CSM/SF/SFC...1-C/SFC168Q.Seq.d/ ANACACTGTTGGCCTACTGGGTTGCAACACCTGGTAGATTATTAGATCATTTACAAAATA CTCAATC

  12. 46 CFR 168.15-25 - Washrooms.

    Science.gov (United States)

    2010-10-01

    ... Accommodations § 168.15-25 Washrooms. (a) There must be provided 1 shower for each 10 persons or fraction thereof... which private or semi-private facilities are attached. (b) All wash basins and showers must be equipped with adequate plumbing, including hot and cold running fresh water. ...

  13. Dysprosium detector for neutron dosimetry in external beam radiotherapy

    Science.gov (United States)

    Ostinelli, A.; Berlusconi, C.; Conti, V.; Duchini, M.; Gelosa, S.; Guallini, F.; Vallazza, E.; Prest, M.

    2014-09-01

    Radiotherapy treatments with high-energy (>8 MeV) photon beams are a standard procedure in clinical practice, given the skin and near-target volumes sparing effect, the accurate penetration and the uniform spatial dose distribution. On the other hand, despite these advantages, neutrons may be produced via the photo-nuclear (γ,n) reactions of the high-energy photons with the high-Z materials in the accelerator head, in the treatment room and in the patient, resulting in an unwanted dose contribution which is of concern, given its potential to induce secondary cancers, and which has to be monitored. This work presents the design and the test of a portable Dysprosium dosimeter to be used during clinical treatments to estimate the "in vivo" dose to the patient. The dosimeter has been characterized and validated with tissue-equivalent phantom studies with a Varian Clinical iX 18 MV photon beam, before using it with a group of patients treated at the S. Anna Hospital in Como. The working principle of the dosimeter together with the readout chain and the results in terms of delivered dose are presented.

  14. Dysprosium detector for neutron dosimetry in external beam radiotherapy

    Energy Technology Data Exchange (ETDEWEB)

    Ostinelli, A.; Berlusconi, C.; Conti, V.; Duchini, M.; Gelosa, S. [Medical Physics - Sant' Anna Hospital, Como (Italy); Guallini, F. [EL.SE s.r.l. (Italy); Vallazza, E. [INFN, Trieste (Italy); Prest, M. [University of Insubria, Como (Italy)

    2014-09-21

    Radiotherapy treatments with high-energy (>8MeV) photon beams are a standard procedure in clinical practice, given the skin and near-target volumes sparing effect, the accurate penetration and the uniform spatial dose distribution. On the other hand, despite these advantages, neutrons may be produced via the photo-nuclear (γ,n) reactions of the high-energy photons with the high-Z materials in the accelerator head, in the treatment room and in the patient, resulting in an unwanted dose contribution which is of concern, given its potential to induce secondary cancers, and which has to be monitored. This work presents the design and the test of a portable Dysprosium dosimeter to be used during clinical treatments to estimate the “in vivo” dose to the patient. The dosimeter has been characterized and validated with tissue-equivalent phantom studies with a Varian Clinical iX 18 MV photon beam, before using it with a group of patients treated at the S. Anna Hospital in Como. The working principle of the dosimeter together with the readout chain and the results in terms of delivered dose are presented.

  15. Low Field Magnetic and Thermal Hysteresis in Antiferromagnetic Dysprosium

    Directory of Open Access Journals (Sweden)

    Iuliia Liubimova

    2017-06-01

    Full Text Available Magnetic and thermal hysteresis (difference in magnetic properties on cooling and heating have been studied in polycrystalline Dy (dysprosium between 80 and 250 K using measurements of the reversible Villari effect and alternating current (AC susceptibility. We argue that measurement of the reversible Villari effect in the antiferromagnetic phase is a more sensitive method to detect magnetic hysteresis than the registration of conventional B(H loops. We found that the Villari point, recently reported in the antiferromagnetic phase of Dy at 166 K, controls the essential features of magnetic hysteresis and AC susceptibility on heating from the ferromagnetic state: (i thermal hysteresis in AC susceptibility and in the reversible Villari effect disappears abruptly at the temperature of the Villari point; (ii the imaginary part of AC susceptibility is strongly frequency dependent, but only up to the temperature of the Villari point; (iii the imaginary part of the susceptibility drops sharply also at the Villari point. We attribute these effects observed at the Villari point to the disappearance of the residual ferromagnetic phase. The strong influence of the Villari point on several magnetic properties allows this temperature to be ranked almost as important as the Curie and Néel temperatures in Dy and likely also for other rare earth elements and their alloys.

  16. Dicty_cDB: SSI168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SS (Link to library) SSI168 (Link to dictyBase) - G01245 DDB0191092 Contig-U04437-1 SSI...168P (Link to Original site) SSI168F 353 SSI168Z 403 SSI168P 756 - - Show SSI168 Library SS (Link to library) Clone ID SSI...ontig-U04437-1 Original site URL http://dictycdb.biol.tsukuba.ac.jp/CSM/SS/SSI1-C/SSI...168Q.Seq.d/ Representative seq. ID SSI168P (Link to Original site) Representative DNA sequence >SSI168 (SSI168Q) /CSM/SS/SSI...yficqlfsq*p*s*wyn*rsrnsqsiryiwi*ssi*hc*ftflkslttwl wfkvqrlpwimrihchrqiii*ss**nenwccsfec*shl*yy*lsln*tfynci**

  17. A Low-Symmetry Dysprosium Metallocene Single-Molecule Magnet with a High Anisotropy Barrier.

    Science.gov (United States)

    Pugh, Thomas; Chilton, Nicholas F; Layfield, Richard A

    2016-09-05

    The single-molecule magnet (SMM) properties of the isocarbonyl-ligated dysprosium metallocene [Cp*2 Dy{μ-(OC)2 FeCp}]2 (1Dy ), which contains a rhombus-shaped Dy2 Fe2 core, are described. Combining a strong axial [Cp*](-) ligand field with a weak equatorial field consisting of the isocarbonyl ligands leads to an anisotropy barrier of 662 cm(-1) in zero applied field. The dominant thermal relaxation pathways in 1Dy involves at least the fourth-excited Kramers doublet, thus demonstrating that prominent SMM behavior can be observed for dysprosium in low-symmetry environments.

  18. Malonate complexes of dysprosium: synthesis, characterization and application for LI-MOCVD of dysprosium containing thin films.

    Science.gov (United States)

    Milanov, Andrian P; Seidel, Rüdiger W; Barreca, Davide; Gasparotto, Alberto; Winter, Manuela; Feydt, Jürgen; Irsen, Stephan; Becker, Hans-Werner; Devi, Anjana

    2011-01-07

    A series of malonate complexes of dysprosium were synthesized as potential metalorganic precursors for Dy containing oxide thin films using chemical vapor deposition (CVD) related techniques. The steric bulkiness of the dialkylmalonato ligand employed was systematically varied and its influence on the resulting structural and physico-chemical properties that is relevant for MOCVD was studied. Single crystal X-ray diffraction analysis revealed that the five homoleptic tris-malonato Dy complexes (1-5) are dimers with distorted square-face bicapped trigonal-prismatic geometry and a coordination number of eight. In an attempt to decrease the nuclearity and increase the solubility of the complexes in various solvents, the focus was to react these dimeric complexes with Lewis bases such as 2,2'-biypridyl and pyridine (6-9). This resulted in monomeric tris-malonato mono Lewis base adduct complexes with improved thermal properties. Finally considering the ease of synthesis, the monomeric nature and promising thermal characteristics, the silymalonate adduct complex [Dy(dsml)(3)bipy] (8) was selected as single source precursor for growing DySi(x)O(y) thin films by liquid injection metalorganic chemical vapor deposition (LI-MOCVD) process. The as-deposited films were analyzed for their morphology and composition by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, Rutherford backscattering (RBS) analysis and X-ray photoelectron spectroscopy.

  19. 168/E online for UA1

    CERN Multimedia

    1983-01-01

    Five 168/E processors and associated specialized interface hardware made an importartant contribution to the UA1 experiment. The processors provided an online event display facility, and also flagged candidate events. See Annual Report 1983 p. 75, and photo 8305815X, 8395813X. This photo shows the team including DD personnel and UA1 members. On the foreground left, is Michel Demoulin. On the background, 3rd from left, is Adolfo Fucci, last Sergio Cittolin.

  20. Exploration of dysprosium: the most critical element for Japan

    Science.gov (United States)

    Watanabe, Y.

    2012-04-01

    Dysprosium (Dy), one of the heavy rare earth elements, is used mainly as an additive for NdFeB permanent magnets which are installed in various modern industrial products such as voice coil motors in computers, factory automation machinery, hybrid and electric vehicles, home electronics, and wind turbine, to improve heat resistance of the magnets. Dy has been produced about 2,000t per year from the ores from ion adsorption type deposits in southern China. However, the produced amount of Dy was significantly reduced in 2011 in China due to reservation of heavy rare earth resources and protection of natural environment, resulting in soaring of Dy price in the world. In order to respond the increasing demand of Dy, unconventional supply sources are inevitably developed, in addition to heavy rare earth enriched ion adsorption type deposits outside China. Heavy rare earth elements including Dy are dominantly hosted in xenotime, fergusonite, zircon, eudialyte, keiviite, kainosite, iimoriite, etc. Concentration of xenotime is found in placer deposits in Malaysia and India, hydrothermal deposits associated with unconformity-type uranium mineralization (Athabasca basin in Canada, Western Australia), iron-oxide fluorite mineralization (South Africa) and Sn-bearing alkaline granite (Brazil). Zircon and fergusontie concentration is found as igneous and hydrothermal products in peralkaline syenite, alkaline granite and pegmatite (e.g., Nechalacho in Canada). Eudialyte concentration is found in some peralkaline syenite bodies in Greenland, Canada, Sweden and Russia. Among these sources, large Dy resources are estimated in the deposits hosted in peralkaline rocks (Nechalacho: 79,000t, Kvanefjeld: 49,000t, Norra Karr: 15,700t, etc.) compared to the present demand of Dy. Thus, Dy will be supplied from the deposits associated with peralkaline and alkaline deposits in future instead of ion adsorption type deposits in southern China.

  1. Long afterglow of trivalent dysprosium doped strontium aluminate

    Energy Technology Data Exchange (ETDEWEB)

    Huang, Yuan Ming, E-mail: dongshanisland@126.com [School of Mathematics and Physics, Changzhou University, Jiangsu 213164 (China); Ma, Qing-lan [School of Mathematics and Physics, Changzhou University, Jiangsu 213164 (China); School of Electronics and Information, Nantong University, Jiangsu 226019 (China)

    2015-04-15

    Trivalent dysprosium doped strontium aluminate (SrA1{sub 2}O{sub 4}:Dy{sup 3+}) was synthesized via the sol–gel combustion method to realize green afterglow in the absence of Eu{sup 2+} luminescent centers. The morphology, crystal structure, photoluminescence and long afterglow of the SrAl{sub 2}O{sub 4}:Dy{sup 3+} were characterized with scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy and photoluminescence spectroscopy, respectively. The bluish-green photoluminescence of SrAl{sub 2}O{sub 4}:Dy{sup 3+} consists of a broad emission band centered at about 520 nm and two characteristic emissions of Dy{sup 3+} ions centered at 480 and 575 nm, respectively. The green afterglow of SrAl{sub 2}O{sub 4}:Dy{sup 3+} is a broad emission band centered at around 520 nm, and the lifetime extracted from afterglow decay is found to be 53 s. The mechanism on the green afterglow from SrAl{sub 2}O{sub 4}:Dy{sup 3+} is discussed in terms of the possible defect levels in the host. - Highlights: • Broad band long-lasting afterglow is observed in SrAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors. • Characteristic emissions of Dy{sup 3+} ions are superimposed on the broad PL of phosphors. • Dy{sup 3+} ions can also act as luminescent centers in addition to electron traps. • A mechanism on long afterglow of SrAl{sub 2}O{sub 4}:Dy{sup 3+} is proposed without Eu{sup 2+} activator.

  2. Low temperature spin reorientation in dysprosium iron garnet

    Energy Technology Data Exchange (ETDEWEB)

    Lahoubi, M; Younsi, W; Soltani, M L [Department of Physics, Badji-Mokhtar University, BP-12 Annaba, 23000 (Algeria); Voiron, J; Schmitt, D, E-mail: mlahoubi@gmail.co [Louis Neel Laboratory, CNRS-UJF, BP-166, 38042 Grenoble Cedex 9 (France)

    2009-03-01

    The spin reorientation (SR) phase transition in dysprosium iron garnet (Dy{sub 3}Fe{sub 5}O{sub 12} or DyIG) have been studied by specific heat C{sub p}(T) and high field magnetisation measurements M{sub T}(H) and M{sub H}(T) on single crystals at low temperature. A first order SR is observed with a sharp jump at T{sub SR} = 14.5+-0.5 K in the C{sub p}(T) curve which corresponds to a spontaneous change from the high temperature (HT) easy direction (111) to an (uuw) angular low temperature (LT) phases. Above T{sub SR}, the magnetic structure is described by the irreducible representation (IR) A{sub 2g} of the rhombohedral space group R 3 c. Below T{sub SR}, the magnetic structure changes in the monoclinic the space group C2/c with the IR A{sub g}. When the field H is kept aligned along the hard symmetry directions (100) and (110), we obtain respectively the variation of the angular positions theta(T) and theta'(T) from the total spontaneous magnetisation down to 1.5 K (theta = 39.23 deg. and theta' = 30.14 deg.) and the results are in good agreement with the previous observations in low fields. When the sample is allowed to rotate freely on itself, the critical field H{sub c}(T) between the HT(111) and the LT(uuw) angular phases permits us to precise the transition line up to 15 T and 40 K between the so called canted field induced (FI) and the associated collinear magnetic phases. The experimental magnetic phase diagram (MPD) is precisely determined in the (H{sub c}-T) plane and the domains of the existence and the stability of the two magnetic phases are specified.

  3. Anisotropic magnetic properties of dysprosium iron garnet (DyIG)

    Energy Technology Data Exchange (ETDEWEB)

    Lahoubi, M; Younsi, W; Soltani, M-L [Department of Physics, Badji-Mokhtar University, BP 12 - 23000 Annaba (Algeria); Ouladdiaf, B, E-mail: mlahoubi@gmail.co [Institut Laue Langevin, BP 156 - 38042 Grenoble Cedex 9 (France)

    2010-01-01

    The magnetic properties of dysprosium iron garnet (DyIG) have been studied by performing high resolution powder neutron diffraction experiments and high dc fields magnetizations on single crystals. Among all the reflections (hkl) indexed in the nuclear cubic space group (CSG) Ia 3-bar d with h+k+l=2n and k=[000], the superstructure lines (hkl)* forbidden by the symmetry (222)* and (622)* are not observed in the patterns at all temperatures. The pattern at 130 K is well interpreted within the magnetic modes F belonging to the irreducible representation (IR) T{sub 1g} of the CSG and identified to the room temperature ferrimagnetic Neel model. The high magnetic field behavior of the spontaneous collinear magnetic structure (MS) along the easy axis (EA) <111> is isotropic. Below 130 K, the patterns exhibit additional magnetic superstructure lines. They are associated to the appearance of the spontaneous non collinear MS which is described in the subgroup of the CSG, R 3-bar c within the IR A{sub 2g}. A strong magnetization anisotropy (MA) is observed at 1.5 K in the low symmetry phases were the spin reorientation transition (SR) occur at T{sub RS}=14.5 K. The onset of MA is detected below two characteristic temperatures, Ta{sub 1}=125 K and Ta{sub 2}=75 K respectively to the hard axis (HA) <100> and <110>. Symmetry arguments are used in the framework of the theory of representation analysis (RA) applied to the subgroup of R 3-bar c, C2/c within the IR A{sub g}. It seems that this MA results essentially from the difference between the spontaneous non collinear MS and the field induced (FI) configurations. All results are discussed with previous neutrons studies.

  4. Dysprosium-containing layered double hydroxides nanoparticles intercalated with biologically active species as an approach for theranostic systems

    KAUST Repository

    Arratia-Quijada, Jenny

    2015-10-23

    A layered double hydroxide structure including dysprosium cations was prepared by co-precipitation. The nanoparticles showed a linear relationship with the reciprocal relaxation spin-lattice (T1) time of water protons which is reflected as contrast in aqueous suspensions analyzed by magnetic resonance imaging. The interlayer space of dysprosium containing LDH was successfully intercalated with folate, ibuprofen and gallate ions, which are key molecules for recognition of some cancer cells and treatment of diseases. The paramagnetic property of the dysprosium-containing LDH detected in this work beside the ability to transport drugs open up the opportunity to design theranostic materials in a single crystal phase with nanometric dimensions.

  5. Effects of Dysprosium Oxide Doping on Microstructure and Properties of Barium Titanate Ceramic

    Institute of Scientific and Technical Information of China (English)

    Pu Yongping; Ren Huijun; Chen Wei; Chen Shoutian

    2005-01-01

    Different amounts of dysprosium oxide were incorporated into barium titanate powders synthesized by hydrothermal method. Relations of substitution behaviors and lattice parameters with solid-solubility were studied. Furthermore, the influences of dysprosium oxide doping fraction on grain size and dielectric properties of barium titanate ceramic, including dielectric constant and breakdown electric field strength, were investigated via scanning electron microscope, X-ray diffraction and electric property tester. The results show that dysprosium oxide can restrain abnormal grain growth during sintering and that fine-grained and high density of barium titanate ceramic can result in excellent dielectric properties. As mass fraction of dysprosium oxide is 0.6%, the lattice parameters of grain increase to the maximum because of the lowest vacancy concentration. The electric property parameters are cited as following: dielectric constant (25 ℃) reaches 4100, the change in relative dielectric constant with temperature is -10% to 10% within the range of -15~100 ℃, breakdown electric field strength (alternating current) achieves 3.2 kV·mm-1, which can be used in manufacturing high voltage ceramic capacitors.

  6. Sandwich-type tetrakis(phthalocyaninato) dysprosium-cadmium quadruple-decker SMM.

    Science.gov (United States)

    Wang, Hailong; Qian, Kang; Wang, Kang; Bian, Yongzhong; Jiang, Jianzhuang; Gao, Song

    2011-09-14

    Homoleptic tetrakis[2,3,9,10,16,17,23,24-octa(butyloxy)phthalocyaninato] dysprosium-cadmium quadruple-decker complex 1 was isolated in relatively good yield of 43% from a simple one-pot reaction. This compound represents the first sandwich-type tetrakis(phthalocyaninato) rare earth-cadmium quadruple-decker SMM that has been structurally characterized.

  7. In situ characterization of the nitridation of dysprosium during mechanochemical processing

    Energy Technology Data Exchange (ETDEWEB)

    Jaques, Brian J.; Osterberg, Daniel D.; Alanko, Gordon A.; Tamrakar, Sumit; Smith, Cole R.; Hurley, Michael F.; Butt, Darryl P., E-mail: DarrylButt@BoiseState.edu

    2015-01-15

    Highlights: • A nitridation reaction in a high energy planetary ball mill was monitored in situ. • Dysprosium mononitride was synthesized from Dy at low temperatures in short times. • Ideal gas law and in situ temperature and pressure used to assess reaction extent. • It is proposed that reaction rate is proportional to the creation of new surface. - Abstract: Processing of advanced nitride ceramics traditionally requires long durations at high temperatures and, in some cases, in hazardous atmospheres. In this study, dysprosium mononitride (DyN) was rapidly formed from elemental dysprosium in a closed system at ambient temperatures. An experimental procedure was developed to quantify the progress of the nitridation reaction during mechanochemical processing in a high energy planetary ball mill (HEBM) as a function of milling time and intensity using in situ temperature and pressure measurements, SEM, XRD, and particle size analysis. No intermediate phases were formed. It was found that the creation of fresh dysprosium surfaces dictates the rate of the nitridation reaction, which is a function of milling intensity and the number of milling media. These results show clearly that high purity nitrides can be synthesized with short processing times at low temperatures in a closed system requiring a relatively small processing footprint.

  8. Dysprosium complexes with the tetraphenylporphyrin macrocyclic ligand; Complejos de disprosio con el ligante macrociclico tetrafenilporfirina

    Energy Technology Data Exchange (ETDEWEB)

    Martinez M, V.; Padilla, J.; Ramirez, F.M

    1992-04-15

    In this report, the results obtained on the synthesis, characterization and study of the chemical behavior of dysprosium complex with the acetylacetone chelating agent (Hacac) and the tetraphenylporphyrin macrocyclic ligand (H{sub 2}TFP) are given. Based on the literature but according to our necessities and interest, the appropriate methodology settled down from the synthesis of prime matters until the obtaining and characterization of the products. The acetyl acetonate complex was obtained of mono hydrated dysprosium [Dy(acac){sub 3}. H{sub 2}0] and trihydrated [Dy(acac){sub 3} .3 H{sub 2}0], the mono tetra phenyl porphyrinate [Dy(TFP)(acac). 2 ac] the double sandwich of the dysprosium porphyrinate [Dy(TFP){sub 2}] and the triple sandwich of the dysprosium porphyrinate [Dy(TFP){sub 3}. 2 TCB] (TCB = trichlorobenzene). Its were characterized by their melting points, solubility, IR, UV, TGA and DTA both first and besides the techniques already mentioned for NMR'H, RPE and Magnetic susceptibility the three last complexes. From the spectroscopic point of view, IR and RPE its suggested the existence of a complex of inverse mixed valence [Dy(TFP){sup 2-} (TFP) {sup 1-}] for the Dy(TFP){sub 2} as a result of the existence of the free radical (TFP' {sup 1-} and that it was not in none of the other porphyrin compounds. In the NMR'H spectra of the compounds were not observed signals in the region from 0 to 10 ppm that which shows that the dysprosium complexes in special those of the porphyrin type are highly paramagnetic and its could be used as displacement reagents, creators of images and contrast agents of great utility in these days in studies of NMR, technique today by today used in medical diagnoses. (Author)

  9. Synthesis, structural characterization and in vitro testing of dysprosium containing silica particles as potential MRI contrast enhancing agents

    Science.gov (United States)

    Chiriac, L. B.; Trandafir, D. L.; Turcu, R. V. F.; Todea, M.; Simon, S.

    2016-11-01

    The work is focused on synthesis and structural characterization of novel dysprosium-doped silica particles which could be considered as MRI contrast agents. Sol-gel derived silica rich particles obtained via freeze-drying and spray-drying processing methods were structurally characterized by XRD, 29Si MAS-NMR and XPS methods. The occurrence of dysprosium on the outermost layer of dysprosium containing silica particles was investigated by XPS analysis. The MRI contrast agent characteristics have been tested using RARE-T1 and RARE-T2 protocols. The contrast of MRI images delivered by the investigated samples was correlated with their local structure. Dysprosium disposal on microparticles with surface structure characterised by decreased connectivity of the silicate network units favours dark T2-weighted MRI contrast properties.

  10. Dysprosium-containing layered double hydroxides nanoparticles intercalated with biologically active species as an approach for theranostic systems

    Energy Technology Data Exchange (ETDEWEB)

    Arratia-Quijada, Jenny [Departamento de Ciencias de la Salud, Centro Universitario Tonalá, Universidad de Guadalajara, Av. Nuevo Periférico No. 555, C.P. 48525, Tonalá, Jalisco (Mexico); Sánchez Jiménez, Cecilia [Departamento de Química, Universidad de Guadalajara, Boulevard Marcelino García Barragán 1421, C.P. 44430, Guadalajara, Jalisco (Mexico); Gurinov, Andrey [Research Resources Center for Magnetic Resonance, St. Petersburg State University, Universitetskiy pr. 26, 198504 St. Petersburg (Russian Federation); NMR Core Lab, King Abdullah University of Science and Technology, Thuwal 23955-6900 (Saudi Arabia); Pérez Centeno, Armando; Ceja Andrade, Israel [Departamento de Física, Universidad de Guadalajara, Boulevard Marcelino García Barragán 1421, C.P. 44430, Guadalajara, Jalisco (Mexico); Carbajal Arízaga, Gregorio Guadalupe, E-mail: gregoriocarbajal@yahoo.com.mx [Departamento de Química, Universidad de Guadalajara, Boulevard Marcelino García Barragán 1421, C.P. 44430, Guadalajara, Jalisco (Mexico)

    2016-01-15

    Graphical abstract: - Highlights: • LDH structure including dysprosium was prepared by co-precipitation. • LDH was capable to produce contrast in the T1 mode of MRI. • LDH were intercalated with folate, ibuprofen and gallate ions. - Abstract: A layered double hydroxide structure including dysprosium cations was prepared by co-precipitation. The nanoparticles showed a linear relationship with the reciprocal relaxation spin-lattice (T1) time of water protons which is reflected as contrast in aqueous suspensions analyzed by magnetic resonance imaging. The interlayer space of dysprosium containing LDH was successfully intercalated with folate, ibuprofen and gallate ions, which are key molecules for recognition of some cancer cells and treatment of diseases. The paramagnetic property of the dysprosium-containing LDH detected in this work beside the ability to transport drugs open up the opportunity to design theranostic materials in a single crystal phase with nanometric dimensions.

  11. 46 CFR 168.15-35 - Hospital space.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Hospital space. 168.15-35 Section 168.15-35 Shipping... VESSELS Accommodations § 168.15-35 Hospital space. (a) Each vessel must be provided with a hospital space... attention in all weather. (b) The hospital must be suitably separated from other spaces and must be used for...

  12. 37 CFR 1.68 - Declaration in lieu of oath.

    Science.gov (United States)

    2010-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false Declaration in lieu of oath. 1.68 Section 1.68 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE... Declaration § 1.68 Declaration in lieu of oath. Any document to be filed in the Patent and Trademark...

  13. 46 CFR 168.15-45 - Heating and cooling.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Heating and cooling. 168.15-45 Section 168.15-45 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS CIVILIAN NAUTICAL SCHOOL VESSELS Accommodations § 168.15-45 Heating and cooling. All quarters must be adequately heated and...

  14. Slow magnetic relaxation in a hydrogen-bonded 2D array of mononuclear dysprosium(III) oxamates.

    Science.gov (United States)

    Fortea-Pérez, Francisco R; Vallejo, Julia; Julve, Miguel; Lloret, Francesc; De Munno, Giovanni; Armentano, Donatella; Pardo, Emilio

    2013-05-01

    The reaction of N-(2,6-dimethylphenyl)oxamic acid with dysprosium(III) ions in a controlled basic media afforded the first example of a mononuclear lanthanide oxamate complex exhibiting a field-induced slow magnetic relaxation behavior typical of single-ion magnets (SIMs). The hydrogen-bond-mediated self-assembly of this new bifunctional dysprosium(III) SIM in the solid state provides a unique example of 2D hydrogen-bonded polymer with a herringbone net topology.

  15. 26 CFR 5c.168(f)(8)-8 - Loss of section 168(f)(8) protection; recapture.

    Science.gov (United States)

    2010-04-01

    ... TREASURY (CONTINUED) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c.168(f)(8)-8 Loss of section 168(f)(8) protection; recapture. (a) In general. Upon... its income tax return as required in § 5c.168(f) (8)-2 (a)(3)(iii). (3) The lessee (or any transferee...

  16. Reference: 168 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 168 http://metadb.riken.jp/db/SciNetS_ria224i/cria224u4ria224u15695592i Baxter Ivan R et al. 2005 Fe...y using a vacuole-specific dye, 5-(and -6)-carboxy 2',7'-dichlorofluorescein diacetate. A similar vacuolar defe...TT12 and BAN). Thus, the specific effect of aha10 on vacuolar and PA biogenesis provides genetic evidence to... coat endothelium of Arabidopsis thaliana. 7 2649-54 15695592 2005 Feb Proceedings of the National Academy o...Foster Nathan|Harper Jeffrey F|Hazen Samuel P|Murphy Angus S|Peer Wendy Ann|Young Jeffery C

  17. Dysprosium-Catalyzed Growth of Single-Walled Carbon Nanotube Arrays on Substrates

    Directory of Open Access Journals (Sweden)

    Qian Yong

    2009-01-01

    Full Text Available Abstract In this letter, we report that dysprosium is an effective catalyst for single-walled carbon nanotubes (SWNTs growth via a chemical vapor deposition (CVD process for the first time. Horizontally superlong well-oriented SWNT arrays on SiO2/Si wafer can be fabricated by EtOH-CVD under suitable conditions. The structure and properties are characterized by scanning electron microscopy, transition electron microscopy, Raman spectroscopy and atomic force microscopy. The results show that the SWNTs from dysprosium have better structural uniformity and better conductivity with fewer defects. This rare earth metal provides not only an alternative catalyst for SWNTs growth, but also a possible method to generate high percentage of superlong semiconducting SWNT arrays for various applications of nanoelectronic device.

  18. Direct Search for keV Sterile Neutrino Dark Matter with a Stable Dysprosium Target

    CERN Document Server

    Lasserre, T; Cribier, M; Merle, A; Mertens, S; Vivier, M

    2016-01-01

    We investigate a new method to search for keV-scale sterile neutrinos that could account for Dark Matter. Neutrinos trapped in our galaxy could be captured on stable $^{163}$Dy if their mass is greater than 2.83~keV. Two experimental realizations are studied, an integral counting of $^{163}$Ho atoms in dysprosium-rich ores and a real-time measurement of the emerging electron spectrum in a dysprosium-based detector. The capture rates are compared to the solar neutrino and radioactive backgrounds. An integral counting experiment using several kilograms of $^{163}$Dy could reach a sensitivity for the sterile-to-active mixing angle $\\sin^2\\theta_{e4}$ of $10^{-5}$ significantly exceeding current laboratory limits. Mixing angles as low as $\\sin^2\\theta_{e4} \\sim 10^{-7}$ / $\\rm m_{^{163}\\rm Dy}\\rm{(ton)}$ could possibly be explored with a real-time experiment.

  19. Preparation of Dysprosium Ferrite/Polyacrylamide Magnetic Composite Microsphere and Its Characterization

    Institute of Scientific and Technical Information of China (English)

    Hidehiro Kumazawa; Wang Zhifeng; Zhou Lanxiang; Zhang Hong; Li Yourong; Zhang Ming

    2005-01-01

    Using the technique of microemulsion polymerization with nano-reactor, dysprosium ferrite/polyacrylamide magnetic composite microsphere was prepared by one-step method in a single inverse microemulsion. The structure, average particle size, morphology of composite microsphere were characterized by FTIR, XRD, TEM and TGA. The magnetic responsibility of composite microsphere was also investigated. The results indicate that the magnetic composite microsphere possess high magnetic responsibility and suspension stability.

  20. {Delta}I = 2 energy staggering in normal deformed dysprosium nuclei

    Energy Technology Data Exchange (ETDEWEB)

    Riley, M.A.; Brown, T.B.; Archer, D.E. [Florida State Univ., Tallahassee, FL (United States)] [and others

    1996-12-31

    Very high spin states (I{ge}50{Dirac_h}) have been observed in {sup 155,156,157}Dy. The long regular band sequences, free from sharp backbending effects, observed in these dysprosium nuclei offer the possibility of investigating the occurence of any {Delta}I = 2 staggering in normal deformed nuclei. Employing the same analysis techniques as used in superdeformed nuclei, certain bands do indeed demonstrate an apparent staggering and this is discussed.

  1. Poly[[[μ3-N′-(carboxymethylethylenediamine-N,N,N′-triacetato]dysprosium(III] trihydrate

    Directory of Open Access Journals (Sweden)

    Xiaomei Zhuang

    2010-11-01

    Full Text Available In the title coordination polymer, {[Dy(C10H13N2O8]·3H2O}n, the dysprosium(III ion is coordinated by two N atoms and six O atoms from three different (carboxymethylethylenediaminetriacetate ligands in a distorted square-antiprismatic geometry. The ligands connect the metal atoms, forming layers parallel to the ab plane. O—H...O hydrogen bonds further assemble adjacent layers into a three-dimensional supramolecular network.

  2. Making two dysprosium atoms rotate - Einstein-de Haas effect revisited

    OpenAIRE

    Górecki, Wojciech; Rzążewski, Kazimierz

    2016-01-01

    We present a numerical study of the behaviour of two magnetic dipolar atoms trapped in a harmonic potential and exhibiting the standard Einstein-de Haas effect while subject to a time dependent homogeneous magnetic field. Using a simplified description of the short range interaction and the full expression for the dipole-dipole forces we show, that under experimentally realisable conditions two dysprosium atoms may be pumped to a high ($l>20$) value of the relative orbital angular momentum.

  3. Phosphor Dysprosium-Doped Layered Double Hydroxides Exchanged with Different Organic Functional Groups

    Directory of Open Access Journals (Sweden)

    David Ricardo Martínez Vargas

    2013-01-01

    Full Text Available The layers of a Zn/Al layered double hydroxide (LDH were doped with Dy3+ cations. Among some compositions, the Zn2+ : Al3+ : Dy3+ molar ratio equal to 30 : 9 : 1 presented a single crystalline phase. Organic anions with carboxylic, amino, sulfate, or phosphate functional groups were intercalated as single layers between LDH layers as confirmed by X-ray diffraction and infrared spectroscopy. Photoluminescence spectra of the nitrate intercalated LDH showed a wide emission band with strong intensity in the yellow region (around 574 nm, originated due to symmetry distortion of the octahedral coordination in dysprosium centers. Moreover, a broad red band emission was also detected apparently due to the presence of zinc oxide. The distorted symmetry of the dysprosium coordination environment, also confirmed by X-ray photoelectron spectroscopy analysis, was modified after the intercalation with phenyl phosphonate (PP, aspartate (Asp, adipate (Adip, and serinate (Ser anions; the emission as measured from PL spectra of these LDH was more intense in the blue region (ca. 486 nm, thus indicating an increase in symmetry of dysprosium octahedrons. The red emission band from zinc oxide kept the same intensity after intercalation of dodecyl sulfate (DDS. An additional emission of unknown origin at λ = 767 nm was present in all LDHs.

  4. High frequency band crossings in ^168Lu.

    Science.gov (United States)

    Roux, D. G.; Li, Y.; Ma, W. C.; Amro, H.; Thompson, J.; Winger, J.; Hagemann, G.; Herskind, B.; Jensen, D.; Sletten, G.; Wilson, J.; Fallon, P.; Diamond, R.; Goergen, A.; Machiavelli, A.; Ward, D.; Hübel, H.; Domscheit, J.

    2003-10-01

    High spin states in ^168Lu were populated using the ^123Sb(^48Ca,3n) reaction at 203 MeV. The beam was provided by the 88" cyclotron at LBNL, and coincident gamma rays were detected with the Gammasphere spectrometer array. An analysis of the data which had been sorted into three- and four- dimensional histograms confirmed the four previously known (J.H.Ha et al. J. Phys. Soc. Japan 71 (2002) 1663-1671) pairs of signature partner bands and extended them to considerably higher spins (in one case up to a tentative 50 hbar). In addition, a new pair of signature partners, as well as a new doubly decoupled band were found. On the basis of the present data, the configuration of one of the known bands, previously assigned π d_3/2 øtimes ν i_13/2 was reassigned as π d_5/2 øtimes ν i_13/2. High frequency band crossings, beyond the first ν i_13/2 alignment, were observed for the first time. These results will be discussed with reference to Cranking Shell Model calculations.

  5. Systematic study on surface and magnetostructural changes in Mn-substituted dysprosium ferrite by hydrothermal method

    Energy Technology Data Exchange (ETDEWEB)

    Rekha, G. [Department of Physics, College of Engineering Guindy, Anna University, Sardar Patel Road, Chennai 600025 (India); Tholkappiyan, R. [Department of Physics, College of Engineering Guindy, Anna University, Sardar Patel Road, Chennai 600025 (India); Department of Physics, College of Science, UAE University, Al-Ain 15551 (United Arab Emirates); Vishista, K., E-mail: raovishista@gmail.com [Department of Physics, College of Engineering Guindy, Anna University, Sardar Patel Road, Chennai 600025 (India); Hamed, Fathalla [Department of Physics, College of Science, UAE University, Al-Ain 15551 (United Arab Emirates)

    2016-11-01

    Highlights: • Garnet type Dy{sub 3}Fe{sub 5-x}Mn{sub x}O{sub 12} (x = 0–0.06) nanoparticles of 88.4–86.8 nm were synthesized by hydrothermal method. • The Dy, Mn, Fe and O elements in the ferrites were confirmed from XPS. • The multiple oxidation states of Fe and Mn ions, bonding energy and cationic distributions of the samples were examined by XPS. • The magnetic property shows ferromagnetic behavior from VSM technique. • The results from these studies are correlated with respect to Mn dopant. - Abstract: Dysprosium iron garnets are of scientific importance because of the wide range of magnetic properties that can be obtained in substituting dysprosium by a rare earth metal. In the present work, the effect of Mn substitution on magnetostructural changes in dysprosium ferrite nanoparticles is studied. Highly crystalline pure and Mn doped dysprosium ferrite nanoparticles were synthesized by hydrothermal method. The samples were calcined at 1100 °C for 2 h in air atmosphere which is followed by characterization using XRD, FT-IR analysis, SEM, XPS and VSM. The average crystallite size of synthesized samples were calculated by X-ray diffraction falls in the range of 88.4–86.8 nm and was found to be in cubic garnet structure. For further investigation of the structure and corresponding changes in the tetrahedral and octahedral stretching vibrational bonds, FT-IR was used. The synthesized samples consist of multiple oxidation (Fe{sup 3+} and Fe{sup 2+}) states for Fe ions and (Mn{sup 3+} and Mn{sup 2+}) Mn ions analyzed in three ways of Fe 2p and Mn 2p spectra from the XPS analysis. With respect to Mn dopant in Dy{sub 3}Fe{sub 5}O{sub 12}, the cationic distributions of elements were discussed from high resolution XPS spectra by peak position and shift, area, width. To find out the porous/void surface morphology of the sample, scanning electron microscopy was used. From XPS analysis, the presence of elements (Dy, Mn, Fe and O) and their composition in the

  6. Synthesis, structural characterization and in vitro testing of dysprosium containing silica particles as potential MRI contrast enhancing agents

    Energy Technology Data Exchange (ETDEWEB)

    Chiriac, L.B.; Trandafir, D.L. [Faculty of Physics & National Magnetic Resonance Center, Babeş-Bolyai University, Cluj-Napoca, RO-400084 (Romania); Interdisciplinary Research Institute on Bio-Nano-Sciences & Faculty of Physics, Babeş-Bolyai University, Cluj-Napoca, RO-400084 (Romania); Turcu, R.V.F. [Faculty of Physics & National Magnetic Resonance Center, Babeş-Bolyai University, Cluj-Napoca, RO-400084 (Romania); Todea, M. [Interdisciplinary Research Institute on Bio-Nano-Sciences & Faculty of Physics, Babeş-Bolyai University, Cluj-Napoca, RO-400084 (Romania); Simon, S., E-mail: simons@phys.ubbcluj.ro [Faculty of Physics & National Magnetic Resonance Center, Babeş-Bolyai University, Cluj-Napoca, RO-400084 (Romania); Interdisciplinary Research Institute on Bio-Nano-Sciences & Faculty of Physics, Babeş-Bolyai University, Cluj-Napoca, RO-400084 (Romania)

    2016-11-01

    Highlights: • Dysprosium containing silica microparticles obtained by freeze and spray drying. • Higher structural units interconnection achieved in freeze vs. spray dried samples. • Dy occurance on the outermost layer of the microparticles evidenced by XPS. • Enhanced MRI contrast observed for freeze dried samples with 5% mol Dy{sub 2}O{sub 3}. - Abstract: The work is focused on synthesis and structural characterization of novel dysprosium-doped silica particles which could be considered as MRI contrast agents. Sol-gel derived silica rich particles obtained via freeze-drying and spray-drying processing methods were structurally characterized by XRD, {sup 29}Si MAS-NMR and XPS methods. The occurrence of dysprosium on the outermost layer of dysprosium containing silica particles was investigated by XPS analysis. The MRI contrast agent characteristics have been tested using RARE-T{sub 1} and RARE-T{sub 2} protocols. The contrast of MRI images delivered by the investigated samples was correlated with their local structure. Dysprosium disposal on microparticles with surface structure characterised by decreased connectivity of the silicate network units favours dark T{sub 2}-weighted MRI contrast properties.

  7. Microscopic study of neutron-rich dysprosium isotopes

    Energy Technology Data Exchange (ETDEWEB)

    Vargas, Carlos E. [Universidad Veracruzana, Facultad de Fisica e Inteligencia Artificial, Xalapa (Mexico); Universidad Nacional Autonoma de Mexico, Facultad de Ciencias, Apartado Postal 70-542, Mexico D.F. (Mexico); Velazquez, Victor [Universidad Nacional Autonoma de Mexico, Facultad de Ciencias, Apartado Postal 70-542, Mexico D.F. (Mexico); Lerma, Sergio [Universidad Veracruzana, Facultad de Fisica e Inteligencia Artificial, Xalapa (Mexico)

    2013-01-15

    Microscopic studies in heavy nuclei are very scarce due to large valence spaces involved. This computational problem can be avoided by means of the use of symmetry-based models. Ground-state, {gamma} and {beta} bands, and their B(E2) transition strengths in {sup 160-168}Dy isotopes, are studied in the framework of the pseudo-SU(3) model which includes the preserving symmetry Q . Q term and the symmetry-breaking Nilsson and pairing terms, systematically parametrized. Additionally, three rotor-like terms are considered, whose free parameters, fixed for all members of the chain, are used to fine tune the moment of inertia of rotational bands and the band head of {gamma} and {beta} bands. The model succesfully describes in a systematic way rotational features in these nuclei and allows to extrapolate toward the midshell nucleus {sup 170}Dy. The results presented show that it is possible to study a full chain of isotopes or isotones in the region with the present model. (orig.)

  8. Microscopic study of neutron-rich Dysprosium isotopes

    CERN Document Server

    Vargas, Carlos E; Lerma, Sergio; 10.1140/epja/i2013-13004-1

    2013-01-01

    Microscopic studies in heavy nuclei are very scarce due to large valence spaces involved. This computational problem can be avoided by means of the use of symmetry based models. Ground-state, gamma and beta-bands, and their B(E2) transition strengths in 160-168Dy isotopes, are studied in the framework of the pseudo-SU(3) model which includes the preserving symmetry Q.Q term and the symmetry-breaking Nilsson and pairing terms, systematically parametrized. Additionally, three rotor-like terms are considered whose free parameters, fixed for all members of the chain are used to fine tune the moment of inertia of rotational bands and the band-head of gamma and beta-bands. The model succesfully describes in a systematic way rotational features in these nuclei and allows to extrapolate toward the midshell nucleus 170Dy. The results presented show that it is possible to study full chain of isotopes or isotones in the region with the present model.

  9. A 168E emulator for off-line production

    CERN Multimedia

    CERN PhotoLab

    1982-01-01

    By the end of 1982 seven such processors each with 184 kbyte memory were made available to a few experiments for about 3500 hours of equivalent IBM 370/168 equivalent time, at a cost of about 300 hours of equivalent IBM 370/168 time on the Computer Centre IBM. See Annual Report 1982 p. 81. In front of the computer, Christiane Ball

  10. 26 CFR 5c.168(f)(8)-2 - Election to characterize transaction as a section 168(f)(8) lease.

    Science.gov (United States)

    2010-04-01

    ..., DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c.168(f)(8)-2 Election to characterize transaction as a section 168(f... center with which the income tax returns of the lessor and lessee are filed; (C) A description of each...

  11. Influence of exchange splitting on optical properties in gadolinium and dysprosium single crystals

    Energy Technology Data Exchange (ETDEWEB)

    Knyazev, Yu.V.; Bolotin, G.A. (AN SSSR, Sverdlovsk. Inst. Fiziki Metallov)

    1984-12-01

    The temperature dependences of optical conductivity in gadolinium and dysprosium single crystals at the light wave vector polarization along a hexagonal axis and in the basis plane are considered. A substantial anisotropy of interzonal absorption has been found. The sample transition into magnetically ordered state is shown to be accompanied by the emergence of resonance absorption peaks in the near infrared spectral region. The manifestation of these peculiarities is associated with quantum electron transitions between the s-, d-f- interaction-split energy bands near the Fermi level. Main peculiarities of the experimental spectrum of gadolinium optical conductivity found their reflection in theoretically calculated dispersion dependence.

  12. Therapeutic application of dysprosium-165-FHMA in the treatment of rheumatoid knee effusions

    Energy Technology Data Exchange (ETDEWEB)

    English, R.J.; Zalutsky, M.; Venkatesan, P.; Sledge, C.B.

    1986-03-01

    Radiation synovectomy utilizing a variety of radionuclides has proven to be an effective technique in the treatment of rheumatoid arthritis. The recent introduction of the short-lived radionuclide, Dysprosium-165 (/sup 165/Dy), as a replacement for the longer-lived radiocolloids has reduced nontarget dosimetry caused by leakage of the agent from the articular cavity. A review of the methods and status of radiation synovectomy, and the application of /sup 165/Dy-ferric hydroxide macroaggregates (FHMA) as an alternative therapeutic agent is described.

  13. Properties of dysprosium-doped gallium lanthanum sulfide fiber amplifiers operating at 1.3 microm.

    Science.gov (United States)

    Samson, B N; Schweizer, T; Hewak, D W; Laming, R I

    1997-05-15

    In light of recent progress in the fabrication of gallium lanthanum sulfide (GaLaS) fibers, we have modeled the performance of dysprosium-doped GaLaS fiber amplifiers operating at 1.3 microm . Based on experimental data, we find that the incorporation of a codopant (terbium) in the fiber core significantly shortens the optimum amplifier length from >30 m to approximately 3 m . Such a device may be practical, given the fiber losses currently achieved in GaLaS fibers.

  14. 27 CFR 40.168 - Remittance with return.

    Science.gov (United States)

    2010-04-01

    ..., DEPARTMENT OF THE TREASURY (CONTINUED) TOBACCO MANUFACTURE OF TOBACCO PRODUCTS, CIGARETTE PAPERS AND TUBES... Taxes on Tobacco Products § 40.168 Remittance with return. Except when an electronic fund transfer...

  15. Effect of dysprosium on the kinetics and structural transformations during the decomposition of the supersaturated solid solution in magnesium-samarium alloys

    Science.gov (United States)

    Rokhlin, L. L.; Luk'yanova, E. A.; Tabachkova, N. Yu.; Dobatkina, T. V.; Tarytina, I. E.; Korol'kova, I. G.

    2017-03-01

    The effect of dysprosium added in the amounts such that it does not form an individual phase in equilibrium with solid magnesium on the decomposition of the supersaturated magnesium solid solution in Mg-Sm alloys is studied. The presence of dysprosium in Mg-Sm alloys is found to retard the decomposition of the supersaturated magnesium solid solution and to increase the hardening effect upon aging. When these alloys are aged, dysprosium is partly retained in the magnesium solid solution and partly enters into the compositions of the phases that form during the decomposition of the solid solution and are characteristic of Mg-Sm alloys.

  16. SNOOP module CAMAC interface to the 168/E microprocessor

    Energy Technology Data Exchange (ETDEWEB)

    Bernstein, D.; Carroll, J.T.; Mitnick, V.H.; Paffrath, L.; Parker, D.B.

    1979-10-01

    A pair of 168/E microprocessors will be used to meet the realtime computing requirements of the SLAC Hybrid Facility. A SNOOP module and 168/E Interface provide the link between the host computer and the microprocessors. By eavesdropping on normal CAMAC read operations, the SNOOP provides a direct data transfer from CAMAC to microprocessor memory. The host computer controls the processors using standard CAMAC programmed I/O to the SNOOP.

  17. Cyclic single-molecule magnets: from the odd-numbered heptanuclear to a dimer of heptanuclear dysprosium clusters.

    Science.gov (United States)

    Tian, Haiquan; Bao, Song-Song; Zheng, Li-Min

    2016-02-01

    A heptanuclear and a dimer of heptanuclear dysprosium clusters (Dy7 and Dy14) have been successfully synthesized by ingenious coalescence of the single and double pyrazinyl hydrazone as well as phosphonate ligands. The complexes feature the largest odd-numbered cyclic lanthanide clusters reported thus far. Both exhibit single molecule magnet behaviors at low temperature.

  18. A comparison of the effects of symmetry and magnetoanisotropy on paramagnetic relaxation in related dysprosium single ion magnets.

    Science.gov (United States)

    Williams, Ursula J; Mahoney, Brian D; DeGregorio, Patrick T; Carroll, Patrick J; Nakamaru-Ogiso, Eiko; Kikkawa, James M; Schelter, Eric J

    2012-06-07

    Dysprosium complexes of the tmtaa(2-) ligand were synthesized and characterized by X-band EPR and magnetism studies. Both complexes demonstrate magnetoanisotropy and slow paramagnetic relaxation. Comparison of these compounds with the seminal phthalocyanine complex [Dy(Pc)(2)](-) shows the azaannulide complexes are more susceptible to relaxation through non-thermal pathways.

  19. Dual responsive dysprosium-doped hydroxyapatite particles and toxicity reduction after functionalization with folic and glucuronic acids

    Energy Technology Data Exchange (ETDEWEB)

    Sánchez Lafarga, Ana Karen; Pacheco Moisés, Fermín P. [Departamento de Química, Universidad de Guadalajara, Marcelino García Barragán 1421, C.P. 44430, Guadalajara, Jalisco (Mexico); Gurinov, Andrey [Research Resources Center for Magnetic Resonance, Saint Petersburg State University, Universitetskij pr. 26, 198504 St. Petersburg (Russian Federation); Ortiz, Genaro Gabriel [Laboratorio Desarrollo-Envejecimiento, Enfermedades Neurodegenerativas, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano de Seguro Social (IMSS), Guadalajara, Jalisco (Mexico); Carbajal Arízaga, Gregorio Guadalupe, E-mail: gregoriocarbajal@yahoo.com.mx [Departamento de Química, Universidad de Guadalajara, Marcelino García Barragán 1421, C.P. 44430, Guadalajara, Jalisco (Mexico)

    2015-03-01

    The development of probes for biomedical applications demands materials with low toxicity levels besides fluorescence or magnetic properties to be detected by confocal microscopes or MRI resonators. Several drug delivery systems or other biomedical materials prepared with hydroxyapatite have been proposed, however, toxicity effects might arise when the size of particles is nanometric. In this study, hydroxyapatite functionalized with glucuronic or folic acids presented lower oxidative stress, measured from lipoperoxides and nitric oxide indicators in rats than pure hydroxyapatite. In separated experiments, hydroxyapatite was doped with dysprosium cations by coprecipitation producing a single crystal phase with fluorescent properties easily visualized by confocal microscopy when excited at 488 nm. These particles also presented the ability to modify the proton relaxation time in T1 maps collected by magnetic resonance imaging. These modified hydroxyapatite nanoparticles could be candidates to design bimodal probes with low toxicity. - Highlights: • Hydroxyapatite functionalized with glucuronic acid reduced oxidative stress in rats. • Functionalization with folic acid reduced oxidative stress in rats. • Dysprosium doping does not affect the crystalline structure of hydroxyapatite. • Dysprosium doped particles are visible in fluorescent microscope. • Dysprosium doped particles act as MRI contrast agents.

  20. Tuning Slow Magnetic Relaxation in a Two-Dimensional Dysprosium Layer Compound through Guest Molecules.

    Science.gov (United States)

    Chen, Qi; Li, Jian; Meng, Yin-Shan; Sun, Hao-Ling; Zhang, Yi-Quan; Sun, Jun-Liang; Gao, Song

    2016-08-15

    A novel two-dimensional dysprosium(III) complex, [Dy(L)(CH3COO)]·0.5DMF·H2O·2CH3OH (1), has been successfully synthesized from a new pyridine-N-oxide (PNO)-containing ligand, namely, N'-(2-hydroxy-3-methoxybenzylidene)pyridine-N-oxidecarbohydrazide (H2L). Single-crystal X-ray diffraction studies reveal that complex 1 is composed of a dinuclear dysprosium subunit, which is further extended by the PNO part of the ligand to form a two-dimensional layer. Magnetic studies indicate that complex 1 shows well-defined temperature- and frequency-dependent signals under a zero direct-current (dc) field, typical of slow magnetic relaxation with an effective energy barrier Ueff of 33.6 K under a zero dc field. Interestingly, powder X-ray diffraction and thermogravimetric analysis reveal that compound 1 undergoes a reversible phase transition that is induced by the desorption and absorption of methanol and water molecules. Moreover, the desolvated sample [Dy(L)(CH3COO)]·0.5DMF (1a) also exhibits slow magnetic relaxation but with a higher anisotropic barrier of 42.0 K, indicating the tuning effect of solvent molecules on slow magnetic relaxation.

  1. Dosimetric properties of dysprosium doped calcium magnesium borate glass subjected to Co-60 gamma ray

    Energy Technology Data Exchange (ETDEWEB)

    Omar, R. S., E-mail: ratnasuffhiyanni@gmail.com; Wagiran, H., E-mail: husin@utm.my; Saeed, M. A. [Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru (Malaysia)

    2016-01-22

    Thermoluminescence (TL) dosimetric properties of dysprosium doped calcium magnesium borate (CMB:Dy) glass are presented. This study is deemed to understand the application of calcium as the modifier in magnesium borate glass with the presence of dysprosium as the activator to be performed as TL dosimeter (TLD). The study provides fundamental knowledge of a glass system that may lead to perform new TL glass dosimetry application in future research. Calcium magnesium borate glass systems of (70-y) B{sub 2}O{sub 3} − 20 CaO – 10 MgO-(y) Dy{sub 2}O{sub 3} with 0.05  mol % ≤ y ≤ 0.7  mol % of dyprosium were prepared by melt-quenching technique. The amorphous structure and TL properties of the prepared samples were determined using powder X-ray diffraction (XRD) and TL reader; model Harshaw 4500 respectively. The samples were irradiated to Co-60 gamma source at a dose of 50 Gy. Dosimetric properties such as annealing procedure, time temperature profile (TTP) setting, optimization of Dy{sub 2}O{sub 3} concentration of 0.5 mol % were determined for thermoluminescence dosimeter (TLD) reader used.

  2. Luminescent properties of dysprosium(Ⅲ) ions in LaAlO3 nanocrystallites

    Institute of Scientific and Technical Information of China (English)

    K. Lema(n)ski; P.J. Dere(n)

    2011-01-01

    The absorption and emission spectra as well as decay time profile of Dy3+ ions in LaAlO3 nanocrystals were analyzed.The crystal structure of LaAlO3 was confirmed from XRD measurement.The emission peaks from blue to red came from main emitting level of dysprosium 4F9/2 to the ground and other excited levels of Dy3+ ions.Cross relaxation process led to non-radiative quenching of luminescence,so that the lifetime of the 4F9/2 energy level ions decreased with increasing amount of doped Dy3+ ions.The cross relaxation transfer rates were experimentally determined as a function of Dy3+ concentration.

  3. Magnetic ordering temperatures in rare earth metal dysprosium under ultrahigh pressures

    Science.gov (United States)

    Samudrala, Gopi K.; Tsoi, Georgiy M.; Weir, Samuel T.; Vohra, Yogesh K.

    2014-04-01

    Magnetic ordering temperatures in heavy rare earth metal dysprosium (Dy) have been studied using an ultrasensitive electrical transport measurement technique in a designer diamond anvil cell to a pressure of 69 GPa and a temperature of 10 K. Previous studies using magnetic susceptibility measurements at high pressures were able to track magnetic ordering temperature only till 7 GPa in the hexagonal close packed (hcp) phase of Dy. Our studies indicate that the magnetic ordering temperature shows an abrupt drop of 80 K at the hcp-Sm phase transition followed by a gradual decrease that continues till 17 GPa. This is followed by a rapid increase in the magnetic ordering temperatures in the double hcp phase and finally leveling off in the distorted face centered cubic phase of Dy. Our studies reaffirm that 4f-shell remains localized in Dy and there is no loss of magnetic moment or 4f-shell delocalization for pressures up to 69 GPa.

  4. Electrochemical behaviour of dysprosium in the eutectic LiCl-KCl at W and Al electrodes

    Energy Technology Data Exchange (ETDEWEB)

    Castrillejo, Y. [Dpto de Quimica Analitica, Facultad de Ciencias, Universidad de Valladolid, Prado de la Magdalena s/n, 47005 Valladolid (Spain)]. E-mail: ycastril@qa.uva.es; Bermejo, M.R. [Dpto de Quimica Analitica, Facultad de Ciencias, Universidad de Valladolid, Prado de la Magdalena s/n, 47005 Valladolid (Spain); Barrado, A.I. [Dpto de Quimica Analitica, Facultad de Ciencias, Universidad de Valladolid, Prado de la Magdalena s/n, 47005 Valladolid (Spain); Pardo, R. [Dpto de Quimica Analitica, Facultad de Ciencias, Universidad de Valladolid, Prado de la Magdalena s/n, 47005 Valladolid (Spain); Barrado, E. [Dpto de Quimica Analitica, Facultad de Ciencias, Universidad de Valladolid, Prado de la Magdalena s/n, 47005 Valladolid (Spain); Martinez, A.M. [Department of Materials Technology, Sem Saelands vei 6, 7491 Trondheim (Norway)

    2005-03-15

    The electrochemical behaviour of DyCl{sub 3} was studied in the eutectic LiCl-KCl at different temperatures. The cathodic reaction can be written:Dy(III)+3e-bar Dy(0)which can be divided in two very close cathodic steps:Dy(III)+1e-bar Dy(II)andDy(II)+2e-bar Dy(0)Transient electrochemical techniques, such as cyclic voltammetry, chronopotentiometry, and chronoamperometry were used in order to study the reaction mechanism and the transport parameters of electroactive species at a tungsten electrode. The results showed that in the eutectic LiCl-KCl, electrocrystallization of dysprosium seems to be the controlling electrochemical step. Chronoamperometric studies indicated instantaneous nucleation of dysprosium with three dimensional growth of the nuclei whatever the applied overpotential.Mass transport towards the electrode is a simple diffusion process, and the diffusion coefficient of the electroactive species, i.e. Dy(III), has been calculated. The validity of the Arrhenius law was also verified by plotting the variation of the logarithm of the diffusion coefficient versus 1/T.In addition, the electrode reactions of the LiCl-KCl-DyCl{sub 3} solutions at an Al wire were also investigated by cyclic voltammetry and open circuit chronopotentiometry. The redox potential of the Dy(III)/Dy couple at the Al electrode was observed at more positive potentials values than those at the inert electrode. This potential shift was thermodynamically analyzed by a lowering of activity of Dy in the metal phase due to the formation of intermetallic compounds.

  5. Phenotype abnormality: 168 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 168 http://metadb.riken.jp/db/SciNetS_ria224i/cria224u1ria224u674i decreased effic...iency in organ named whole plant during process named growth ... whole plant ... decreased efficiency ... growth ...

  6. 7 CFR 1.168 - Procedure for hearing.

    Science.gov (United States)

    2010-01-01

    ... Desist Proceedings Under Section 2 of the Capper-Volstead Act § 1.168 Procedure for hearing. (a) Time and... prejudice to a party; (ii) Is necessary because of a disability of any individual expected to participate in...) Would provide a full and fair evidentiary hearing; (ii) Would not prejudice any party; and (iii)...

  7. 27 CFR 19.168 - Description of plant.

    Science.gov (United States)

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Description of plant. 19..., DEPARTMENT OF THE TREASURY LIQUORS DISTILLED SPIRITS PLANTS Qualification of Distilled Spirits Plants § 19.168 Description of plant. (a) The application for registration shall include a description of...

  8. 42 CFR 440.168 - Primary care case management services.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 4 2010-10-01 2010-10-01 false Primary care case management services. 440.168... care case management services. (a) Primary care case management services means case management related... services. (b) Primary care case management services may be offered by the State— (1) As a voluntary option...

  9. 47 CFR 90.168 - Equal employment opportunities.

    Science.gov (United States)

    2010-10-01

    ... Facilities Used to Provide Commercial Mobile Radio Services § 90.168 Equal employment opportunities. Commercial Mobile Radio Services licensees shall afford equal opportunity in employment to all qualified... Commission, no later than May 31st following the grant of that licensee's first Commercial Mobile...

  10. Structural, optical, thermal, mechanical and dielectric studies of Sulfamic acid single crystals: An influence of dysprosium (Dy3+) doping

    Science.gov (United States)

    Singh, Budhendra; Shkir, Mohd.; AlFaify, S.; Kaushal, Ajay; Nasani, Narendar; Bdikin, Igor; Shoukry, H.; Yahia, I. S.; Algarni, H.

    2016-09-01

    Sulfamic acid is a potential material that exhibits excellent optical properties. A good quality, pure and dysprosium (Dy3+) doped (2.5 and 5 mol %) Sulfamic acid (SA) single crystals were grown successfully by slow cooling method. Structural study revealed a slight change in its lattice parameters and volume, suggesting the successful incorporation of Dy3+ in crystal system. The existence of dysprosium in the system was also confirmed. Presence of various vibrational modes was confirmed. Optical transparency was found to have a significant effect with variation in the doping concentration. Furthermore, a marked enhancement in its mechanical parameters with doping was also identified by nanoindentation technique. Etching study was also performed on the grown crystals to study the etch-pit formation and growth mechanism. Effect of doping on the thermal stability was analysed. All the results were compared and discussed in detail to get insight of the effect of doping concentration on Sulfamic acid crystal.

  11. Optical trapping of ultracold dysprosium atoms: transition probabilities, dynamic dipole polarizabilities and van der Waals $C_6$ coefficients

    CERN Document Server

    Li, Hui; Dulieu, Olivier; Nascimbene, Sylvain; Lepers, Maxence

    2016-01-01

    The efficiency of optical trapping of ultracold atoms depend on the atomic dynamic dipole polarizability governing the atom-field interaction. In this article, we have calculated the real and imaginary parts of the dynamic dipole polarizability of dysprosium in the ground and first excited level. Due to the high electronic angular momentum of those two states, the polarizabilities possess scalar, vector and tensor contributions that we have computed, on a wide range of trapping wavelengths, using the sum-over-state formula. Using the same formalism, we have also calculated the $C_6$ coefficients characterizing the van der Waals interaction between two dysprosium atoms in the two lowest levels. We have computed the energies of excited states and the transition probabilities appearing in the sums, using a combination of \\textit{ab initio} and least-square-fitting techniques provided by the Cowan codes and extended in our group. Regarding the real part of the polarizability, for field frequencies far from atomic...

  12. Mixed (phthalocyaninato)(Schiff-base) di-dysprosium sandwich complexes. Effect of magnetic coupling on the SMM behavior.

    Science.gov (United States)

    Wang, Hailong; Liu, Chenxi; Liu, Tao; Zeng, Suyuan; Cao, Wei; Ma, Qi; Duan, Chunying; Dou, Jianmin; Jiang, Jianzhuang

    2013-11-21

    Reaction between Schiff-base ligand and half-sandwich complex M(Pc)(acac) led to the isolation of new sandwich-type mixed (phthalocyaninato)(Schiff-base) di-lanthanide compounds M2(Pc)2(L)H2O (M = Dy, Gd) (1, 2) [H2Pc = metal free phthalocyanine, Hacac = acetylacetone, H2L = N,N'-bis(3-methyloxysalicylidene)benzene-1,2-diamine] with the triple-decker molecular structure clearly revealed by single crystal X-ray diffraction analysis. For the comparative studies, sandwich triple-decker analogues with pure Schiff-base ligand M2(L)3H2O (M = Dy, Gd) (3, 4) were also prepared. Dynamic magnetic measurement result reveals the single-molecule magnet (SMM) nature of the di-dysprosium derivative 1, while the static magnetic investigation over both pure and the diamagnetic diluted samples of this compound discloses the interionic ferromagnetic coupling between the two dysprosium ions, which in turn effectively suppresses the QTM and enhances the energy barrier of this SMM. Nevertheless, comparative studies over the static magnetic properties of the di-dysprosium triple-decker complexes 1 and 3 indicate the stronger magnetic coupling between the two lanthanide ions in mixed (phthalocyaninato)(Schiff-base) species than in the pure Schiff-base triple-decker analogue, suggesting the special coordination sphere around the dysprosium ions in the former compound over the latter one on the more intense inter-ionic ferromagnetic coupling. As a very small step towards understanding the structure-property relationship, the present result will be surely helpful for the design and synthesis of the multinuclear lanthanide-based SMMs with good properties.

  13. Evaluating United States and world consumption of neodymium, dysprosium, terbium, and praseodymium in final products

    Science.gov (United States)

    Hart, Matthew

    This paper develops scenarios of future rare-earth-magnet metal (neodymium, dysprosium, terbium, and praseodymium) consumption in the permanent magnets used in wind turbines and hybrid electric vehicles. The scenarios start with naive base-case scenarios for growth in wind-turbine and hybrid-electric-vehicle sales over the period 2011 to 2020, using historical data for each good. These naive scenarios assume that future growth follows time trends in historical data and does not depend on any exogenous variable. Specifically, growth of each technological market follows historical time trends, and the amount of rare earths used per unit of technology remains fixed. The chosen reference year is 2010. Implied consumptions of the rare earth magnet metals are calculated from these scenarios. Assumptions are made for the material composition of permanent magnets, the market share of permanent-magnet wind turbines and vehicles, and magnet weight per unit of technology. Different scenarios estimate how changes in factors like the material composition of magnets, growth of the economy, and the price of a substitute could affect future consumption. Each scenario presents a different method for reducing rare earth consumption and could be interpreted as potential policy choices. In 2010, the consumption (metric tons, rare-earth-oxide equivalent) of each rare-earth-magnet metal was as follows. Total neodymium consumption in the world for both technologies was 995 tons; dysprosium consumption was 133 tons; terbium consumption was 50 tons; praseodymium consumption was zero tons. The base scenario for wind turbines shows there could be strong, exponential growth in the global wind turbine market. New U.S. sales of hybrid vehicles would decline (in line with the current economic recession) while non-U.S. sales increase through 2020. There would be an overall increase in the total amount of magnetic rare earths consumed in the world. Total consumption of each rare earth in the short

  14. Excited states in 168Yb from electron-capture decay of 168Lum (T1/2=6.7 min)

    Science.gov (United States)

    Barci, V.; Ardisson, G.; Trubert, D.; Hussonnois, M.

    1999-08-01

    The electron-capture decay of the 168Lum (T1/2=6.7 min, Jπ=3+) isomer was studied with high purity sources, obtained by using a new radiochemical method consisting of fast continous on-line separation of reaction products. A complex spectrum composed of about 200 γ rays was observed. From these, 162 transitions were assigned to a level scheme of 39 excited levels of 168Yb, primarily by γ-γ coincidence spectroscopic measurements. About 60 transitions were placed for the first time and >90% of the decay intensity was clearly identified. The structure of the levels directly fed by the electron-capture decay was reviewed as particle-hole excitations of the core.

  15. 痉挛型脑瘫(168例分析)%Spastic Cerebral Palsy: an Analysis of 168 Cases

    Institute of Scientific and Technical Information of China (English)

    张荣英; 王承武

    1993-01-01

    168例痉挛型脑瘫进行了分析.根据自控能力、肌力和肌痉挛以及病废的程度,可将痉挛型脑瘫分为轻、中、重3级.对我们治疗中的一些经验和体会作了扼要的介绍.

  16. Luminescence features of dysprosium and phosphorus oxide co-doped lithium magnesium borate glass

    Science.gov (United States)

    Hashim, S.; Mhareb, M. H. A.; Ghoshal, S. K.; Alajerami, Y. S. M.; Saripan, M. I.; Bradley, D. A.

    2017-08-01

    Lithium magnesium borate (LMB) glass system co-doped with the oxides of dysprosium (Dy2O3) and phosphorus (P2O5) were synthesized using melt-quenching method. Prepared samples were characterized using various techniques to determine the effects of co-dopants concentration variation on their thermoluminescence (TL) and photoluminescence (PL) properties. TL glow curves of LMB:0.5Dy sample revealed a single prominent peak at Tm=190 °C, where TL intensity was enhanced by a factor of 2.5 with the increase of P2O5 concentration up to 1 mol%. This enhancement was accompanied by a shift in Tm towards higher temperature. Good linearity in the range of 1-100 Gy with linear correlation coefficient of 0.998 was achieved. PL spectra displayed two significant peaks centred at 481 nm and 573 nm. These attractive luminescence features of the proposed glass system may be useful for the development of radiation dosimetry.

  17. Single-molecule magnet behavior for an antiferromagnetically superexchange-coupled dinuclear dysprosium(III) complex.

    Science.gov (United States)

    Long, Jérôme; Habib, Fatemah; Lin, Po-Heng; Korobkov, Ilia; Enright, Gary; Ungur, Liviu; Wernsdorfer, Wolfgang; Chibotaru, Liviu F; Murugesu, Muralee

    2011-04-13

    A family of five dinuclear lanthanide complexes has been synthesized with general formula [Ln(III)(2)(valdien)(2)(NO(3))(2)] where (H(2)valdien = N1,N3-bis(3-methoxysalicylidene)diethylenetriamine) and Ln(III) = Eu(III)1, Gd(III)2, Tb(III)3, Dy(III)4, and Ho(III)5. The magnetic investigations reveal that 4 exhibits single-molecule magnet (SMM) behavior with an anisotropic barrier U(eff) = 76 K. The step-like features in the hysteresis loops observed for 4 reveal an antiferromagnetic exchange coupling between the two dysprosium ions. Ab initio calculations confirm the weak antiferromagnetic interaction with an exchange constant J(Dy-Dy) = -0.21 cm(-1). The observed steps in the hysteresis loops correspond to a weakly coupled system similar to exchange-biased SMMs. The Dy(2) complex is an ideal candidate for the elucidation of slow relaxation of the magnetization mechanism seen in lanthanide systems.

  18. A comparative study of donor formation in dysprosium, holmium, and erbium implanted silicon

    Energy Technology Data Exchange (ETDEWEB)

    Emtsev, V.V.; Emtsev, V.V. Jr.; Poloskin, D.S.; Shek, E.I.; Sobolev, N.A. [Division of Solid State Electronics, Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021 St. Petersburg (Russian Federation)

    1998-12-01

    Formation of donor centers in Czochralski grown silicon doped with dysprosium, holmium, and erbium is discussed. Donor states of three kinds are introduced in the implanted layers after annealing at T=700C. Shallow donor states with ionization energies between 20 and 40 meV are attributed to oxygen -related thermal donors. Other donor centers in the energy range of E{sub C}-(60...70) meV and E{sub C}-(100...120) meV appear to be dependent on dopants. After a 900C anneal strong changes in the donor formation are observed only in silicon doped with erbium. Instead of donors at E{sub C}-(118{+-}5) meV, new donor centres at E{sub C}-(145{+-}5) meV are formed. Reportedly, the latter ones are involved in the excitation process of the Er{sup 3+} ions with a characteristic luminescence line at {approx}1.54 {mu}m. (Copyright (c) 1998 Elsevier Science B.V., Amsterdam. All rights reserved.)

  19. Thermoluminescence properties of lithium magnesium borate glasses system doped with dysprosium oxide.

    Science.gov (United States)

    Mhareb, M H A; Hashim, S; Ghoshal, S K; Alajerami, Y S M; Saleh, M A; Razak, N A B; Azizan, S A B

    2015-12-01

    We report the impact of dysprosium (Dy(3+)) dopant and magnesium oxide (MgO) modifier on the thermoluminescent properties of lithium borate (LB) glass via two procedures. The thermoluminescence (TL) glow curves reveal a single prominent peak at 190 °C for 0.5 mol% of Dy(3+). An increase in MgO contents by 10 mol% enhances the TL intensity by a factor of 1.5 times without causing any shift in the maximum temperature. This enhancement is attributed to the occurrence of extra electron traps created via magnesium and the energy transfer to trivalent Dy(3+) ions. Good linearity in the range of 0.01-4 Gy with a linear correlation coefficient of 0.998, fading as low as 21% over a period of 3 months, excellent reproducibility without oven annealing and tissue equivalent effective atomic numbers ~8.71 are achieved. The trap parameters, including geometric factor (μg), activation energy (E) and frequency factor (s) associated with LMB:Dy are also determined. These favorable TL characteristics of prepared glasses may contribute towards the development of Li2O-MgO-B2O3 radiation dosimeters.

  20. Optical properties of zinc borotellurite glass doped with trivalent dysprosium ion

    Science.gov (United States)

    Ami Hazlin, M. N.; Halimah, M. K.; Muhammad, F. D.; Faznny, M. F.

    2017-04-01

    The zinc borotellurite doped with dysprosium oxide glass samples with chemical formula {[(TeO2) 0 . 7(B2O3) 0 . 3 ] 0 . 7(ZnO) 0 . 3 } 1 - x(Dy2O3)x (where x=0.01, 0.02, 0.03, 0.04 and 0.05 M fraction) were prepared by using conventional melt quenching technique. The structural and optical properties of the proposed glass systems were characterized by using X-ray diffraction (XRD) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, and UV-VIS spectroscopy. The amorphous nature of the glass systems is confirmed by using XRD technique. The infrared spectra of the glass systems indicate three obvious absorption bands which are assigned to BO3 and TeO4 vibrational groups. Based on the absorption spectra obtained, the direct and indirect optical band gaps, as well as the Urbach energy were calculated. It is observed that both the direct and indirect optical band gaps increase with the concentration of Dy3+ ions. On the other hand, the Urbach energy is observed to decrease as the concentration of Dy3+ ions increases.

  1. Isolation of {sup 163}Ho from dysprosium target material by HPLC for neutrino mass measurements

    Energy Technology Data Exchange (ETDEWEB)

    Mocko, Veronika; Taylor, Wayne A.; Nortier, Francois M.; Engle, Jonathan W.; Pollington, Anthony D.; Kunde, Gerd J.; Rabin, Michael W.; Birnbaum, Eva R. [Los Alamos National Laboratory, Los Alamos, NM (United States). Chemistry Div.; Barnhart, Todd E.; Nickles, Robert J. [Univ. Wisconsinn, Madison, WI (United States). Dept. of Medical Physics

    2015-07-01

    The rare earth isotope {sup 163}Ho is of interest for neutrino mass measurements. This report describes the isolation of {sup 163}Ho from a proton-irradiated dysprosium target and its purification. A Dy metal target was irradiated with 16 MeV protons for 10 h. After target dissolution, {sup 163}Ho was separated from the bulk Dy via cation-exchange high performance liquid chromatography using 70 mmol dm{sup -3} α-hydroxyisobutyric acid as the mobile phase. Subsequent purification of the collected Ho fraction was performed to remove the α-hydroxyisobutyrate chelating agent and to concentrate the Ho in a low ionic strength aqueous matrix. The final solution was characterized by MC-ICP-MS to determine the {sup 163}Ho/{sup 165}Ho ratio, {sup 163}Ho and the residual Dy content. The HPLC purification process resulted in a decontamination factor 1.4 x 10{sup 5} for Dy. The isolated Ho fraction contained 24.8 ± 1.3 ng of {sup 163}Ho corresponding to holmium recovery of 72 ± 3%.

  2. BEPS redesign of 168 commercial buildings: summary report

    Energy Technology Data Exchange (ETDEWEB)

    Stoops, J.L.; Deringer, J.J.; Moreno, S.; Misuriello, H.P.

    1984-05-01

    The objective of this report is to present, in usable form, summary data from the Building Energy Performance Standards (BEPS) Phase II commercial buildings energy research conducted in 1978-1979. Summary data presented were obtained from two major research efforts: the BEPS Phase II Redesign experiment; and the related research on ASHRAE Standard 90-75R. The bulk of this report consists of data tabulations of key energy parameters for the 168 sample buildings, which were tabulated from computer-stored files of the 1978-1979 data. Two kinds of tabulations are included: numerical tabulations that extracted information from the computer-stored data base for the 168 sample buildings; and graphic presentations of the computer-generated data, plus data extracted from other sources. The intent is to provide a single data compendium of key energy-related factors from the 1978 redesign experiment and the associated 1978-1979 ASHRAE Standard 90-75R research. This report also supplements the information for which there was not space in the magazine articles. Thus, for some building types, additional analysis, comments, and data tabulations are included that could not be included in the articles because space was limited. These additional analysis items are not consistent across building types because both the energy conservation opportunities and the design strategies applied by the building designers varied considerably by building type. The chapters have been entered individually into EDB and ERA.

  3. First observation of rotational structures in 168Re

    Science.gov (United States)

    Hartley, D. J.; Janssens, R. V. F.; Riedinger, L. L.; Riley, M. A.; Wang, X.; Miller, S. L.; Ayangeakaa, A. D.; Bertone, P. F.; Carpenter, M. P.; Chiara, C. J.; Chowdhury, P.; Garg, U.; Gürdal, G.; Hota, S. S.; Kondev, F. G.; Lauritsen, T.; Ma, W. C.; Matta, J.; McCutchan, E. A.; Mukhopadhyay, S.; Pedicini, E. E.; Vanhoy, J. R.; Zhu, S.

    2016-11-01

    The first rotational sequences have been assigned to the odd-odd nucleus 168Re. Coincidence relationships of these structures with rhenium x rays confirm the isotopic assignment, while arguments based on the γ -ray multiplicity (K -fold) distributions observed with the new bands lead to the mass assignment. Configurations for the two bands were determined through analysis of the rotational alignments of the structures and a comparison of the experimental B (M 1 )/B (E 2 ) ratios with theory. Tentative spin assignments are proposed for the π h11 /2ν i13 /2 band, based on energy level systematics for other known sequences in neighboring odd-odd rhenium nuclei, as well as on systematics seen for the signature inversion feature that is well known in this region. The spin assignment for the π h11 /2ν (h9 /2/f7 /2) structure provides additional validation of the proposed spins and configurations for isomers in the 176Au → 172Ir→168Re α -decay chain.

  4. 26 CFR 5c.168(f)(8)-5 - Term of lease.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 14 2010-04-01 2010-04-01 false Term of lease. 5c.168(f)(8)-5 Section 5c.168(f)(8)-5 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c.168(f)(8)-5...

  5. 40 CFR 81.168 - Great Falls Intrastate Air Quality Control Region.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Great Falls Intrastate Air Quality Control Region. 81.168 Section 81.168 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED... Quality Control Regions § 81.168 Great Falls Intrastate Air Quality Control Region. The Great...

  6. Acute dysprosium toxicity to Daphnia pulex and Hyalella azteca and development of the biotic ligand approach.

    Science.gov (United States)

    Vukov, Oliver; Smith, D Scott; McGeer, James C

    2016-01-01

    The toxicological understanding of rare earth elements (REEs) in the aquatic environment is very limited but of increasing concern. The objective of this research is to compare the toxicological effect of the REE dysprosium to the freshwater invertebrates Daphnia pulex and Hyalella azteca and in the more sensitive organism, understand the toxicity modifying influence of Ca, Na, Mg, pH and dissolved organic matter (DOM). Standard methods (Environment Canada) were followed for testing and culture in media of intermediate hardness (60mg CaCO3 mg/L) at pH 7.8 with Ca at 0.5, Na 0.5, Mg 0.125 (mM) and 23°C. Acute toxicity tests were done with azteca and D. pulex revealed Hyalella to be 1.4 times more sensitive than Daphnia. Additions of Ca and Na but not Mg provided significant protection against Dy toxicity to Hyalella. Similarly, low pH was associated with reduction in toxicity. Exposures which were pH buffered with and without MOPS were significantly different and indicated that MOPS enhanced Dy toxicity. DOM also mitigated Dy toxicity. Biotic ligand based parameters (LogK values) were calculated based on free ion relationships as determined by geochemical equilibrium modeling software (WHAM ver. 7.02). The logK value for Dy(3+) toxicity to Hyalella was 7.75 while the protective influence of Ca and Na were 3.95 and 4.10, respectively. This study contributes data towards the development of site specific water quality guidelines and criteria for Dy and possibly REEs in general and offers insight into the complex bio-geochemical nature of this element.

  7. [Laryngeal cancer in Camaguey (Cuba). Study of 168 cases].

    Science.gov (United States)

    Ronda Marisy, H; Pila Pérez, R; Castillo Toledo, L; Pila Peláez, R

    1994-01-01

    A recent study of cancer of the larynx made at the Manuel Ascunce Domenech Provincial Hospital in Camagüey, Cuba, from 1985 to 1992 is presented. In this period 168 patients were diagnosed as having this illness. Male patients of 51-70 years age were predominant and smoking was an important factor in 76% of all patients and alcohol consumption in 20.2% of patients. The most common site was the glotis (39.2%) and the epidermoid variety was the most frequent type (95.5%). The tumors classified as T1a No Mo were the most representative of the group (32.1%). We encountered metastasis in only 11.3% of our patients. The terapeutic regimen used was radiotherapy.

  8. Optical trapping of ultracold dysprosium atoms: transition probabilities, dynamic dipole polarizabilities and van der Waals C 6 coefficients

    Science.gov (United States)

    Li, H.; Wyart, J.-F.; Dulieu, O.; Nascimbène, S.; Lepers, M.

    2017-01-01

    The efficiency of the optical trapping of ultracold atoms depends on the atomic dynamic dipole polarizability governing the atom-field interaction. In this article, we have calculated the real and imaginary parts of the dynamic dipole polarizability of dysprosium in the ground and first excited levels. Due to the high electronic angular momentum of those two states, the polarizabilities possess scalar, vector and tensor contributions that we have computed, on a wide range of trapping wavelengths, using the sum-over-state formula. Using the same formalism, we have also calculated the C 6 coefficients characterizing the van der Waals interaction between two dysprosium atoms in the two lowest levels. We have computed the energies of excited states and the transition probabilities appearing in the sums, using a combination of ab initio and least-square-fitting techniques provided by the Cowan codes and extended in our group. Regarding the real part of the polarizability, for field frequencies far from atomic resonances, the vector and tensor contributions are two-orders-of-magnitude smaller than the scalar contribution, whereas for the imaginary part, the vector and tensor contributions represent a noticeable fraction of the scalar contribution. Finally, our anisotropic C 6 coefficients are much smaller than those published in the literature.

  9. Excited states in the doubly odd 168Lu nucleus fed by electron-capture decay of 168Hf (T1/2=25.95 min)

    Science.gov (United States)

    Barci, V.; Ardisson, G.; Trubert, D.; Hussonnois, M.

    1997-05-01

    The low-spin levels of the odd-odd nucleus 168Lu from 168Hf (T1/2=25.95 min) electron-capture decay were investigated by direct γ and γ-γ coincidence measurements. The sources of 168Hf were produced with the 156Gd(16O,4n) reaction and radiochemically separated using chromatographic methods. A level scheme of 39 new levels in the 168Lu nucleus was proposed, accounting for 107 of 119 observed γ transitions assigned to 168Hf electron-capture decay. Transition multipolarities, level-spins, and parities were deduced or proposed. A tentative decay scheme was proposed. Level structure was discussed in the framework of the particle-rotor and Nilsson models.

  10. Acute dysprosium toxicity to Daphnia pulex and Hyalella azteca and development of the biotic ligand approach

    Energy Technology Data Exchange (ETDEWEB)

    Vukov, Oliver, E-mail: vuko3930@mylaurier.ca [Biology Department, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5 (Canada); Smith, D. Scott [Chemistry Department, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5 (Canada); McGeer, James C. [Biology Department, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5 (Canada)

    2016-01-15

    The toxicological understanding of rare earth elements (REEs) in the aquatic environment is very limited but of increasing concern. The objective of this research is to compare the toxicological effect of the REE dysprosium to the freshwater invertebrates Daphnia pulex and Hyalella azteca and in the more sensitive organism, understand the toxicity modifying influence of Ca, Na, Mg, pH and dissolved organic matter (DOM). Standard methods (Environment Canada) were followed for testing and culture in media of intermediate hardness (60 mg CaCO{sub 3} mg/L) at pH 7.8 with Ca at 0.5, Na 0.5, Mg 0.125 (mM) and 23 °C. Acute toxicity tests were done with <24 h old neonates for 48 h in the case of D. pulex and with 2–9 days old offspring for 96 h tests with Hyalella. The potential protective effect of cationic competition was tested with Ca (0.5–2.0 mM), Na (0.5–2.0 mM) and Mg (0.125–0.5 mM). The effect of pH (6.5–8.0) and Suwannee River DOM complexation (at dissolved organic carbon (DOC) concentrations of 9 and 13 mg C/L) were evaluated. Dissolved Dy concentrations were lower than total (unfiltered) indicating precipitation, particularly at higher concentrations. Acute toxicity of Dy to H. azteca and D. pulex revealed Hyalella to be 1.4 times more sensitive than Daphnia. Additions of Ca and Na but not Mg provided significant protection against Dy toxicity to Hyalella. Similarly, low pH was associated with reduction in toxicity. Exposures which were pH buffered with and without MOPS were significantly different and indicated that MOPS enhanced Dy toxicity. DOM also mitigated Dy toxicity. Biotic ligand based parameters (Log K values) were calculated based on free ion relationships as determined by geochemical equilibrium modeling software (WHAM ver. 7.02). The log K value for Dy{sup 3+} toxicity to Hyalella was 7.75 while the protective influence of Ca and Na were 3.95 and 4.10, respectively. This study contributes data towards the development of site specific

  11. White light emission of dysprosium doped lanthanum calcium phosphate oxide and oxyfluoride glasses

    Science.gov (United States)

    Luewarasirikul, N.; Kim, H. J.; Meejitpaisan, P.; Kaewkhao, J.

    2017-04-01

    Lanthanum calcium phosphate oxide and oxyfluoride glasses doped with dysprosium oxide were prepared by melt-quenching technique with chemical composition 20La2O3:10CaO:69P2O5:1Dy2O3 and 20La2O3:10CaF2:69P2O5:1Dy2O3. The physical, optical and luminescence properties of the glass samples were studied to evaluate their potential to using as luminescence materials for solid-state lighting applications. The density, molar volume and refractive index of the glass samples were carried out. The optical and luminescence properties were studied by investigating absorption, excitation, and emission spectra of the glass samples. The absorption spectra were investigated in the UV-Vis-NIR region from 300 to 2000 nm. The excitation spectra observed under 574 nm emission wavelength showed the highest peak centered at 349 nm (6H15/2 → 6P7/2). The emission spectra, excited with 349 nm excitation wavelength showed two major peaks corresponding to 482 nm blue emission (4F9/2 → 6H15/2) and 574 nm yellow emission (4F9/2 → 6H13/2). The experimental lifetime were found to be 0.539 and 0.540 for oxide and oxyfluoride glass sample, respectively. The x,y color coordinates under 349 nm excitation wavelength were (0.38, 0.43) for both glass samples, that be plotted in white region of CIE 1931 chromaticity diagram. The CCT values obtained from the glass samples are 4204 K for oxide glass and 4228 K for oxyfluoride glass corresponding to the commercial cool white light (3100-4500 K). Judd-Ofelt theory had also been employed to obtain the J-O parameters (Ω2, Ω4 and Ω6), oscillator strength, radiative transition possibility, stimulated emission cross section and branching ratio. The Ω2 > Ω4 > Ω6 trend of J-O parameters of both glass samples may indicate the good quality of a glass host for using as optical device application. Temperature dependence of emission spectra was studied from 300 K to 10 K and found that the intensity of the emission peak was found to be increased with

  12. Structure Analysis of 168 MN Hot Die Forging Press%168MN热模锻压力机的结构分析

    Institute of Scientific and Technical Information of China (English)

    郭改丽; 余朝辉

    2016-01-01

    The design features of prestressed frame structure , wedge structure , closed height adjustment structure and top ejector structure in 168 MN hot die forging press have been introduced in the paper .%介绍了168 MN热模锻压力机预应力机架结构、楔式结构、封闭高度调整结构、上顶料结构的设计特点。

  13. Limits on violations of Lorentz symmetry and the Einstein equivalence principle using radio-frequency spectroscopy of atomic dysprosium.

    Science.gov (United States)

    Hohensee, M A; Leefer, N; Budker, D; Harabati, C; Dzuba, V A; Flambaum, V V

    2013-08-02

    We report a joint test of local Lorentz invariance and the Einstein equivalence principle for electrons, using long-term measurements of the transition frequency between two nearly degenerate states of atomic dysprosium. We present many-body calculations which demonstrate that the energy splitting of these states is particularly sensitive to violations of both special and general relativity. We limit Lorentz violation for electrons at the level of 10(-17), matching or improving the best laboratory and astrophysical limits by up to a factor of 10, and improve bounds on gravitational redshift anomalies for electrons by 2 orders of magnitude, to 10(-8). With some enhancements, our experiment may be sensitive to Lorentz violation at the level of 9 × 10(-20).

  14. Nonlinear optical properties of lutetium and dysprosium bisphthalocyanines at 1550 nm with femto- and nanosecond pulse excitation

    Science.gov (United States)

    Plekhanov, A. I.; Basova, T. V.; Parkhomenko, R. G.; Gürek, A. G.

    2017-02-01

    In this work, the nonlinear optical properties of unsubstituted lutetium (LuPc2) and dysprosium (DyPc2) bisphthalocyanines as well as octasubstituted Lu(PcR8)2 derivative with R=-S(C6H13) were studied at a wavelength of 1550 nm with 10 ns and 300 fs pulses. Based on Z-scan measurements the nonlinear absorption and refraction coefficient as well as the nature of nonlinear optical properties were analyzed for these materials. Open aperture Z-scan indicates strong two-photon absorption in all three bisphthalocyanines in nano- and femtosecond regimes. With good nonlinear optical coefficients, bisphthalocyanines of rare earth elements are expected to be promising materials for the creation of optical limiters.

  15. 26 CFR 5c.168(f)(8)-3 - Requirements for lessor.

    Science.gov (United States)

    2010-04-01

    ...) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c... qualified lessor. See § 5c.168(f)(8)-8 for the Federal income tax consequences of such a disqualification... section. See § 5c.168(f)(8)-8 for the Federal income tax consequences where a lease ceases to qualify...

  16. 26 CFR 5c.168(f)(8)-11 - Consolidated returns. [Reserved

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 14 2010-04-01 2010-04-01 false Consolidated returns. 5c.168(f)(8)-11 Section 5c.168(f)(8)-11 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c...

  17. 26 CFR 5c.168(f)(8)-10 - Leases between related parties. [Reserved

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 14 2010-04-01 2010-04-01 false Leases between related parties. 5c.168(f)(8)-10 Section 5c.168(f)(8)-10 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c...

  18. 25 CFR 168.15 - Control of livestock diseases and parasites.

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Control of livestock diseases and parasites. 168.15... REGULATIONS FOR THE HOPI PARTITIONED LANDS AREA § 168.15 Control of livestock diseases and parasites. Whenever... parasites or have been exposed thereto, such livestock must be treated and the movement thereof...

  19. 9 CFR 381.168 - Maximum percent of skin in certain poultry products.

    Science.gov (United States)

    2010-01-01

    ... poultry products. 381.168 Section 381.168 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY ORGANIZATION AND TERMINOLOGY; MANDATORY MEAT AND POULTRY PRODUCTS INSPECTION AND VOLUNTARY INSPECTION AND CERTIFICATION POULTRY PRODUCTS INSPECTION REGULATIONS Definitions...

  20. Spectroscopic data of the 1.8-, 2.9-, and 4.3- mu m transitions in dysprosium-doped gallium lanthanum sulfide glass

    Science.gov (United States)

    Schweizer, T.; Hewak, D. W.; Samson, B. N.; Payne, D. N.

    1996-10-01

    Infrared emission at 1.8, 2.9, and 4.3 mu m is measured in dysprosium-doped gallium lanthanum sulfide (Ga:La:S) glass excited at 815 nm. Emission cross sections were calculated by Judd-Ofelt analysis, the Fuchtbauer-Ladenburg equation, and the theory of McCumber. The sigma tau value for the 4.3- mu m transition is \\similar 4000 times larger in the Ga:La:S glass than in a dysprosium-doped LiYF4 crystal, which has lased on this transition. The large sigma tau value and the recently reported ability of Ga:La:S glass to be fabricated into fiber form show the potential for an efficient, low-threshold mid-infrared fiber laser. The fluorescence peak at 4.3 mu m coincides with the fundamental absorption of atmospheric carbon dioxide, making the glass a potential laser source for gas-sensing applications.

  1. Spectroscopic data of the 1.8-, 2.9-, and 4.3-microm transitions in dysprosium-doped gallium lanthanum sulfide glass.

    Science.gov (United States)

    Schweizer, T; Hewak, D W; Samson, B N; Payne, D N

    1996-10-01

    Infrared emission at 1.8, 2.9, and 4.3 microm is measured in dysprosium-doped gallium lanthanum sulfide (Ga:La:S) glass excited at 815 nm. Emission cross sections were calculated by Judd-Ofelt analysis, the Füchtbauer- Ladenburg equation, and the theory of McCumber. The sigmatau value for the 4.3-microm transition is ~4000 times larger in the Ga:La:S glass than in a dysprosium-doped LiYF(4) crystal, which has lased on this transition. The large sigmatau value and the recently reported ability of Ga:La:S glass to be fabricated into fiber form show the potential for an efficient, low-threshold mid-infrared fiber laser. The f luorescence peak at 4.3 microm coincides with the fundamental absorption of atmospheric carbon dioxide, making the glass a potential laser source for gas-sensing applications.

  2. On-line complexation/cloud point preconcentration for the sensitive determination of dysprosium in urine by flow injection inductively coupled plasma-optical emission spectrometry

    Energy Technology Data Exchange (ETDEWEB)

    Ortega, Claudia; Cerutti, Soledad; Silva, Maria F. [Departamento de Quimica Analitica, Facultad de Quimica, Bioquimica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, 5700, San Luis (Argentina); Olsina, Roberto A.; Martinez, Luis D. [Departamento de Quimica Analitica, Facultad de Quimica, Bioquimica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, 5700, San Luis (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Avda. Rivadavia 1917, CP C1033AAJJ, Buenos Aires (Argentina)

    2003-01-01

    An on-line dysprosium preconcentration and determination system based on the hyphenation of cloud point extraction (CPE) to flow injection analysis (FIA) associated with ICP-OES was studied. For the preconcentration of dysprosium, a Dy(III)-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol complex was formed on-line at pH 9.22 in the presence of nonionic micelles of PONPE-7.5. The micellar system containing the complex was thermostated at 30 C in order to promote phase separation, and the surfactant-rich phase was retained in a microcolumn packed with cotton at pH 9.2. The surfactant-rich phase was eluted with 4 mol L{sup -1} nitric acid at a flow rate of 1.5 mL min{sup -1}, directly in the nebulizer of the plasma. An enhancement factor of 50 was obtained for the preconcentration of 50 mL of sample solution. The detection limit value for the preconcentration of 50 mL of aqueous solution of Dy was 0.03 {mu}g L{sup -1}. The precision for 10 replicate determinations at the 2.0 {mu}g L{sup -1}Dy level was 2.2% relative standard deviation (RSD), calculated from the peak heights obtained. The calibration graph using the preconcentration system for dysprosium was linear with a correlation coefficient of 0.9994 at levels near the detection limits up to at least 100 {mu}g L {sup -1}. The method was successfully applied to the determination of dysprosium in urine. (orig.)

  3. On-line event filtering using the 168/E in CERN experiment NA4

    CERN Document Server

    Bogaerts, A; Eck, C; Lacourt, A; Ogilvie, J; Øverås, H; Petersen, J O; Rothan, B

    1981-01-01

    Summary form only given, as follows. The application of the 168/E IBM emulator as an on-line filter computer in experiment NA4 at the CERN SPS is described. Programs for the 168/E, developed and compiled on the IBM 370/168, are transferred in executable format to the NORD on- line computer through CERNET. The program modules are subsequently loaded into the 168/E program memory (32 kw, 24 bits) using a CAMAC interface module. This unit, when operated in a CAMAC dataway spy mode, also allows transfers of experimental data directly from CAMAC to the 168/E data memory (128 kbytes). However, in the burst environment of the SPS, events are usually buffered in the NORD computer memory. Filter programs include the data checking and tracking routines of the existing off-line production program. Because of the relatively small program size, complicated overlay structures are avoided. Based on IBM 370/168 performance figures for the production program, the 168/E program execution time per event is estimated to about 30...

  4. Isotope separation of the Yb-168 stable isotope for low energy gamma ray sources

    Energy Technology Data Exchange (ETDEWEB)

    Park, Hyun Min; Kwon, Duck Hee; Cha, Yong Ho; Lee, Ki Tae; Nam, Sung Mo; Yoo, Jaek Won; Han, Jae Min; Rhee, Yong Joo [Lab. of Quantum Optics, Korea Atomic Energy Research Institute, Taejeon (Korea, Republic of)

    2003-07-01

    We developed laser isotope separation technology of stable isotope of low melting point metals. Yb-168 can be effectively used in non-destructive testing (NDT) after it is transformed to Yb-168 by neutron irradiation in a nuclear reactor. For this application of Yb-168, the isotope purity of it should be enhanced to more than 15% from the natural abundance of 0.135%. Our isotope separation system consist of laser system, Yb vapor generating system, and photoionized particle extraction system. For the system, we developed a diode-pumped slid-state laser of high-repetition rate and 3-color dye lasers. Yb vapor was generated by heating solid Yb sample resistively. The photo-ion produced by resonance ionization were extracted by a devised extractor. We produced enriched Yb metal more than 20 mg with the abundance of 25.8% of Yb-168 in the Yb (NO{sub 3}){sub 3}.

  5. The 168/E at CERN and the Mark 2, an improved processor design

    CERN Document Server

    Lord, D; Edwards, A W; Fucci, A; Kunz, P; Lee, G; Martin, B; Mornacchi, G; Scharff-Hansen, P; Storr, M; Streater, Timothy C

    1981-01-01

    In the first part of this paper the history of the 168/E work at CERN is reviewed, this is followed by a short description of the hardware and software in use and finally some examples of future applications are given. In the second part of the paper, the limitations of the present 168/E design are discussed and the ways that a new design, Mark 2, could overcome them are presented.

  6. 49 CFR 1.68 - Delegations to the Under Secretary of Transportation for Security for the Transportation Security...

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Delegations to the Under Secretary of Transportation for Security for the Transportation Security Administration. 1.68 Section 1.68 Transportation... § 1.68 Delegations to the Under Secretary of Transportation for Security for the...

  7. Synthesis and Crystal Structure of Tri-(2-mercaptopyridine N-oxide)bis(dimethyl sulfoxide) Dysprosium(Ⅲ)

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    A range of rare earth metal complexes of 2-mercaptopyridine N-oxide (Hmpo) have been synthesized, and studied by elemental analysis and IR spectroscopic technique. Crystal structure of Dy(mpo)3(DMSO)2 (DMSO = dimethyl sulfoxide) has been determined. The complex crystallizes in the triclinic system, space group Pī with lattice parameters: a = 9.602(3), b = 9.803(3), c = 15.498(5)A, α= 89.51(1), β= 85.73(1), γ= 62.99(1)°, Dc = 1.787 g/cm3, C19H24N3O5S5Dy, Mr = 697.21, Z = 2, F(000) = 690, μ = 3.321mm-1, the final R = 0.0237 and wR = 0.0587 for 4116 reflections with I>σ2(I). The coordination number of dysprosium Ⅲ is eight, and its coordination geometry is a somewhat distorted square antiprism with O(3), O(4), O(5), S(3) and O(1), O(2), S(1), S(2) at the tetragonal bases (dihedral angle between their mean planes is 2.9(1)0). Around the Dy atom, three five-membered ring planes (Dy, O, N, C, S) make the dihedral angles of 74.42, 11.31 and 83.72, respectively.

  8. Photo-, cathodo- and thermoluminescent properties of dysprosium-doped HfO2 films deposited by ultrasonic spray pyrolysis.

    Science.gov (United States)

    Manríquez, R Reynoso; Góngora, J A I Díaz; Guzmán-Mendoza, J; Montalvo, T Rivera; Olguín, J C Guzmán; Ramírez, P V Cerón; García-Hipólito, M; Falcony, C

    2014-09-01

    In this work, the photoluminescent (PL), cathodoluminescent (CL) and thermoluminescent (TL) properties of hafnium oxide films doped with trivalent dysprosium ions are reported. The films were deposited on glass substrates at temperatures ranging from 300 to 600°C, using chlorides as precursor reagents. The surface morphology of films showed a veins shaped microstructure at low deposition temperatures, while at higher temperatures the formation of spherical particles was observed on the surface. X-ray diffraction showed the presence of HfO2 monoclinic phase in the films deposited at temperatures greater than 400°C. The PL and CL spectra of the doped films showed the highest emission band centered at 575nm corresponding to the transitions (4)F9/2→(6)H13/2, which is a characteristic transition of Dy(3+) ion. The greatest emission intensities were observed in samples doped with 1 atomic percent (at%) of DyCl3 in the precursor solution. Regarding the TL behavior, the glow curve of HfO2:Dy(+3) films exhibited spectrum with one broad band centered at about 150°C. The highest intensity TL response was observed on the films deposited at 500°C. Copyright © 2014 Elsevier Ltd. All rights reserved.

  9. Workplace testing of the new single sphere neutron spectrometer based on Dysprosium activation foils (Dy-SSS)

    Science.gov (United States)

    Bedogni, R.; Gómez-Ros, J. M.; Esposito, A.; Gentile, A.; Chiti, M.; Palacios-Pérez, L.; Angelone, M.; Tana, L.

    2012-08-01

    A photon insensitive passive neutron spectrometer consisting of a single moderating polyethylene sphere with Dysprosium activation foils arranged along three perpendicular axes was designed by CIEMAT and INFN. The device is called Dy-SSS (Dy foil-based Single Sphere Spectrometer). It shows nearly isotropic response in terms of neutron fluence up to 20 MeV. The first prototype, previously calibrated with 14 MeV neutrons, has been recently tested in workplaces having different energy and directional distributions. These are a 2.5 MeV nearly mono-chromatic and mono-directional beam available at the ENEA Frascati Neutron Generator (FNG) and the photo-neutron field produced in a 15 MV Varian CLINAC DHX medical accelerator, located in the Ospedale S. Chiara (Pisa). Both neutron spectra are known through measurements with a Bonner Sphere Spectrometer. In both cases the experimental response of the Dy-SSS agrees with the reference data. Moreover, it is demonstrated that the spectrometric capability of the new device are independent from the directional distribution of the neutron field. This opens the way to a new generation of moderation-based neutron instruments, presenting all advantages of the Bonner sphere spectrometer without the disadvantage of the repeated exposures. This concept is being developed within the NESCOFI@BTF project of INFN (Commissione Scientifica Nazionale 5).

  10. Ferroelectric properties of dysprosium-doped Bi4Ti3O12 thin films crystallized in various atmospheres

    Institute of Scientific and Technical Information of China (English)

    CHENG Chuan-pin; TANG Ming-hua; YE Zhi; ZHOU Yic-hun; ZHENG Xue-jun; ZHONG Xiang-li; HU Zeng-shun

    2006-01-01

    Dysprosium-doped Bi4Ti3O12 (Bi3.4Dy0.6Ti3O12,BDT) ferroelectric thin films were deposited on Pt(111)/Ti/SiO2/Si(111) substrates by chemical solution deposition (CSD) and crystallized in nitrogen,air and oxygen atmospheres,respectively. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to identify the crystal structure,the surface and cross-section morphology of the deposited ferroelectric films. The results show that the crystallization atmosphere has significant effect on determining the crystallization and ferroelectric properties of the BDT films. The film crystallized in nitrogen at a relatively low temperature of 650 ℃,exhibits excellent crystallinity and ferroelectricity with a remanent polarization of 2Pr = 24.9 μC/cm2 and a coercive field of 144.5 kV/cm. While the films annealed in air and oxygen at 650 ℃ do not show good crystallinity and ferroelectricity until they are annealed at 700 ℃. The structure evolution and ferroelectric properties of BDT thin films annealed under different temperatures (600-750 ℃) were also investigated. The crystallinity of the BDT films is improved and the average grain size increases when the annealing temperature increases from 600 ℃ to 750 ℃ at an interval of 50 ℃. However,the polarization of the films is not monotonous function of the annealing temperature.

  11. Sensitive search for the temporal variation of the fine structure constant using radio-frequency E1 transitions in atomic dysprosium

    CERN Document Server

    Nguyen, A T; Lamoreaux, S K; Torgerson, J R

    2003-01-01

    It has been proposed that the radio-frequency electric-dipole (E1) transition between two nearly degenerate opposite-parity states in atomic dysprosium should be highly sensitive to possible temporal variation of the fine structure constant ($\\alpha$) [V. A. Dzuba, V. V. Flambaum, and J. K. Webb, Phys. Rev. A {\\bf 59}, 230 (1999)]. We discuss here an experimental realization of the proposed search, which involves monitoring the E1 transition frequency over a period of time using direct frequency counting techniques. We estimate that a statistical sensitivity of $|\\adota| \\sim 10^{-18}$/yr may be achieved and discuss possible systematic effects in such a measurement.

  12. The substitution of Proline 168 favors Bax oligomerization and stimulates its interaction with LUVs and mitochondria.

    Science.gov (United States)

    Simonyan, Lilit; Légiot, Alexandre; Lascu, Ioan; Durand, Grégory; Giraud, Marie-France; Gonzalez, Cécile; Manon, Stéphen

    2017-06-01

    Bax is a major player in the apoptotic process, being at the core of the mitochondria permeabilization events. In spite of the major recent advances in the knowledge of Bax organization within the membrane, the precise behavior of the C-terminal helix α9 remains elusive, since it was absent from the resolved structure of active Bax. The Proline 168 (P168) residue, located in the short loop between α8 and α9, has been the target of site-directed mutagenesis experiments, with conflicting results. We have produced and purified a recombinant mutant Bax-P168A, and we have compared its behavior with that of wild-type Bax in a series of tests on Large Unilamellar Vesicles (LUVs) and isolated mitochondria. We conclude that Bax-P168A had a greater ability to oligomerize and bind to membranes. Bax-P168A was not more efficient than wild-type Bax to permeabilize liposomes to small molecules but was more prone to release cytochrome c from mitochondria. Copyright © 2017 Elsevier B.V. All rights reserved.

  13. Dysprosium doping induced shape and magnetic anisotropy of Fe3-xDyxO4 (x=0.01-0.1) nanoparticles

    Science.gov (United States)

    Jain, Richa; Luthra, Vandna; Gokhale, Shubha

    2016-09-01

    The effect of dysprosium doping on evolution of structural and magnetic properties of magnetite (Fe3O4) nanoparticles is reported. A standard route of co-precipitation was used for the synthesis of undoped and doped magnetite nanoparticles Fe3-xDyxO4 (x=0.0-0.1). Transmission electron microscopy (TEM) shows formation of round shaped particles with diameter in the range of 8-14 nm for undoped sample. On doping beyond x=0.01, the formation of rod like structures is initiated along with the round shaped particles. The number of rods is found to increase with increasing doping concentration. Magnetic characterization using Vibrating Sample Magnetometer (VSM) revealed doping dependent magnetic properties which can be correlated with the crystallite size as determined from X-ray diffraction (XRD). Enhancement in the saturation magnetization in the initial stages of doping can be explained on the basis of incorporation of Dy3+ ions in the inverse spinel structure at the octahedral site in place of Fe3+ ions. Subsequent decrease in saturation magnetization observed beyond x=0.03 could be attributed to precipitation of excess Dy in form of dysprosium ferrite phase.

  14. 26 CFR 5c.168(f)(8)-1 - Special rules for leases.

    Science.gov (United States)

    2010-04-01

    ...) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c... parties to the agreement as lessors and lessees for Federal tax law purposes. These rules apply only with... allowed accelerated cost recovery system (ACRS) deductions under section 168 and the investment tax credit...

  15. Large-Field Multicolor Study of Abell 168 Subclusters, Dynamics and Luminosity Functions

    CERN Document Server

    Yang, Y; Yuan, Q; Jiang, Z; Ma, J; Wu, H; Chen, J; Yang, Yanbin; Zhou, Xu; Yuan, Qirong; Jiang, Zhaoji; Ma, Jun; Wu, Hong; Chen, Jiansheng

    2004-01-01

    This paper presents a multicolor study of the nearby cluster of galaxies Abell 168 (z=0.045) with 13 intermediate-band filters in the Beijing-Arizona-Taiwan-Connecticut (BATC) filter system. After a cross-identification between the photometric data obtained from the BATC and the Sloan Digital Sky Survey (SDSS), a catalog containing 1553 galaxies down to r'<20.0 mag is achieved, which includes 121 spectroscopically confirmed member galaxies. The technique of photometric redshift has been applied to all these galaxies with combined 18-band (13 from BATC and 5 from SDSS) spectral energy distributions (SEDs), in order to perform a faint membership selection in Abell 168. As a result, 255 galaxies are newly selected as the member candidates. Based on the enlarged sample of cluster galaxies, the spatial distribution and dynamics of Abell 168 are investigated. In the light of the spatial distribution of the member galaxies and the 0.2-3.5 keV X-ray image by Einstein observatory, it seems that Abell 168 consists o...

  16. 26 CFR 1.168(a)-1 - Modified accelerated cost recovery system.

    Science.gov (United States)

    2010-04-01

    ... depreciation allowance for tangible property that is of a character subject to the allowance for depreciation... property. The allowance for depreciation under section 168 constitutes the amount of depreciation allowable... to the allowance for depreciation is made under section 167 and the regulations under section 167....

  17. 26 CFR 1.168(k)-1 - Additional first year depreciation deduction.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Additional first year depreciation deduction. 1... Corporations § 1.168(k)-1 Additional first year depreciation deduction. (a) Scope and definitions—(1) Scope. This section provides the rules for determining the 30-percent additional first year...

  18. RNF168 cooperates with RNF8 to mediate FOXM1 ubiquitination and degradation in breast cancer epirubicin treatment.

    Science.gov (United States)

    Kongsema, M; Zona, S; Karunarathna, U; Cabrera, E; Man, E P S; Yao, S; Shibakawa, A; Khoo, U-S; Medema, R H; Freire, R; Lam, E W-F

    2016-08-15

    The forkhead box M1 (FOXM1) transcription factor has a central role in genotoxic agent response in breast cancer. FOXM1 is regulated at the post-translational level upon DNA damage, but the key mechanism involved remained enigmatic. RNF168 is a ubiquitination E3-ligase involved in DNA damage response. Western blot and gene promoter-reporter analyses showed that the expression level and transcriptional activity of FOXM1 reduced upon RNF168 overexpression and increased with RNF168 depletion by siRNA, suggesting that RNF168 negatively regulates FOXM1 expression. Co-immunoprecipitation studies in MCF-7 cells revealed that RNF168 interacted with FOXM1 and that upon epirubicin treatment FOXM1 downregulation was associated with an increase in RNF168 binding and conjugation to the protein degradation-associated K48-linked polyubiquitin chains. Consistently, RNF168 overexpression resulted in an increase in turnover of FOXM1 in MCF-7 cells treated with the protein synthesis inhibitor cycloheximide. Conversely, RNF168, knockdown significantly enhanced the half-life of FOXM1 in both absence and presence of epirubicin. Using a SUMOylation-defective FOXM1-5x(K>R) mutant, we demonstrated that SUMOylation is required for the recruitment of RNF168 to mediate FOXM1 degradation. In addition, clonogenic assays also showed that RNF168 mediates epirubicin action through targeting FOXM1, as RNF168 could synergise with epirubicin to repress clonal formation in wild-type but not in FOXM1-deficient mouse embryo fibroblasts (MEFs). The physiological relevance of RNF168-mediated FOXM1 repression is further emphasized by the significant inverse correlation between FOXM1 and RNF168 expression in breast cancer patient samples. Moreover, we also obtained evidence that RNF8 recruits RNF168 to FOXM1 upon epirubicin treatment and cooperates with RNF168 to catalyse FOXM1 ubiquitination and degradation. Collectively, these data suggest that RNF168 cooperates with RNF8 to mediate the ubiquitination and

  19. Analysis of 1 168 patients with maxillofacial injuries induced by traffic accidents%1 168例颌面部交通伤伤情分析

    Institute of Scientific and Technical Information of China (English)

    何黎升; 葛成; 顾晓明; 周树夏

    2001-01-01

    目的 应用改良面部损伤严重度评分(revised facial ISS, RFISS)法回顾性分析1 168例颌面部交通伤伤情。 方法 将全组病例按合并伤情况、损伤处数、伤员分类等3种标准先后分组,用RFISS法对各组病例伤情作统计分析。 结果 1 168例中,男883例,女285例;年龄0~83(29.6±13.1)岁,高峰年龄段15~44岁共896例(占76.7%)。其中颌面部单发伤832例,合并颅脑伤186例。全组各部位损伤共3 600处,人均3.1处。交通伤组RFISS值(5.89±2.30)显著高于非交通伤组(5.23±2.64)(P<0.001)。合并颅脑伤组、多处伤组、机动车驾驶员组的RFISS值最高,分别为6.58±2.37,7.14±1.75,6.70±2.38,与同类其他组 RFISS值比较,差异有非常显著性意义(P<0.01)。 结论 交通事故比其他原因导致的颌面部损伤重,合并有颅脑伤的颌面部交通伤伤情最重。用RFISS法分析颌面部交通伤,能客观、准确地评价损伤的严重程度。%Objective  To evaluate the injury severity of 1 168 patients with maxillofacial injuries induced by traffic accidents with revised facial injury severity score (RFISS) retrospectively.  Methods The 1 168 cases were divided into different groups according to the combined injuries, the quantity of injuries and thd different kinds of the victims. Then RFISS was used to evaluate the injury severity of each group. Results The 1 168 victims (883 males and 285 females) aged from 0 to 83 years, averagely for (29.6 ± 13.1) years. There were 896 patients (76.7%) who aged from 15 to 44 years. A total of 832 cases had solitary injury and 186 cases were combined with craniocerebral injury. There were 3 600 injured locations in total, with 3.1 locations in each patient averagely. The RFISS values were significantly higher in the victims suffering from traffic accidents than those from other causes (P<0.001). And the RFISS values in the head-associated injury

  20. Peter Berger, Grace Davie & Effie Fokas, Religious America, Secular Europe? A Theme and Variations (Aldershot: Ashgate, 2008), 168 pp

    DEFF Research Database (Denmark)

    Lüchau, Peter

    2012-01-01

    Anmeldelse af bogen: Peter Berger, Grace Davie & Effie Fokas, Religious America, Secular Europe? A Theme and Variations (Aldershot: Ashgate, 2008), 168 pp.......Anmeldelse af bogen: Peter Berger, Grace Davie & Effie Fokas, Religious America, Secular Europe? A Theme and Variations (Aldershot: Ashgate, 2008), 168 pp....

  1. 26 CFR 5c.168(f)(8)-7 - Reporting of income, deductions and investment tax credit; at risk rules.

    Science.gov (United States)

    2010-04-01

    ... tax credit; at risk rules. 5c.168(f)(8)-7 Section 5c.168(f)(8)-7 Internal Revenue INTERNAL REVENUE... investment tax credit; at risk rules. (a) In general. The fact that the lessor's payments of interest and... property shall be limited to the extent the at risk rules under the investment tax credit provisions and...

  2. 26 CFR 1.168(d)-1 - Applicable conventions-half-year and mid-quarter conventions.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Applicable conventions-half-year and mid-quarter... and Corporations § 1.168(d)-1 Applicable conventions—half-year and mid-quarter conventions. (a) In... mid-quarter convention applies to the property. Under section 168(d)(3)(A), the mid-quarter...

  3. Expression of the promoter for the maltogenic amylase gene in Bacillus subtilis 168.

    Science.gov (United States)

    Kim, Do-Yeon; Cha, Choon-Hwan; Oh, Wan-Seok; Yoon, Young-Jun; Kim, Jung-Wan

    2004-12-01

    An additional amylase, besides the typical alpha-amylase, was detected for the first time in the cytoplasm of B. subtilis SUH4-2, an isolate from Korean soil. The corresponding gene (bbmA) encoded a maltogenic amylase (MAase) and its sequence was almost identical to the yvdF gene of B. subtilis 168, whose function was unknown. Southern blot analysis using bbmA as the probe indicated that this gene was ubiquitous among various B. subtilis strains. In an effort to understand the physiological function of the bbmA gene in B. subtilis, the expression pattern of the gene was monitored by measuring the beta-galactosidase activity produced from the bbmA promoter fused to the amino terminus of the lacZ structural gene, which was then integrated into the amyE locus on the B. subtilis 168 chromosome. The promoter was induced during the mid-log phase and fully expressed at the early stationary phase in defined media containing beta-cyclodextrin (beta-CD), maltose, or starch. On the other hand, it was kept repressed in the presence of glucose, fructose, sucrose, or glycerol, suggesting that catabolite repression might be involved in the expression of the gene. Production of the beta-CD hydrolyzing activity was impaired by the spo0A mutation in B. subtilis 168, indicating the involvement of an additional regulatory system exerting control on the promoter. Inactivation of yvdF resulted in a significant decrease of the beta-CD hydrolyzing activity, if not all. This result implied the presence of an additional enzyme(s) that is capable of hydrolyzing beta-CD in B. subtilis 168. Based on the results, MAase encoded by bbmA is likely to be involved in maltose and beta-CD utilization when other sugars, which are readily usable as an energy source, are not available during the stationary phase.

  4. Characterization of the MeCP2R168X knockin mouse model for Rett syndrome.

    Directory of Open Access Journals (Sweden)

    Eike Wegener

    Full Text Available Rett syndrome, one of the most common causes of mental retardation in females, is caused by mutations in the X chromosomal gene MECP2. Mice deficient for MeCP2 recapitulate some of the symptoms seen in patients with Rett syndrome. It has been shown that reactivation of silent MECP2 alleles can reverse some of the symptoms in these mice. We have generated a knockin mouse model for translational research that carries the most common nonsense mutation in Rett syndrome, R168X. In this article we describe the phenotype of this mouse model. In male MeCP2(R168X mice life span was reduced to 12-14 weeks and bodyweight was significantly lower than in wild type littermates. First symptoms including tremor, hind limb clasping and inactivity occurred at age 27 days. At age 6 weeks nest building, rotarod, open-field and elevated plus maze experiments showed impaired motor performance, reduced activity and decreased anxiety-like behavior. Plethysmography at the same time showed apneas and irregular breathing with reduced frequency. Female MeCP2R168X mice showed no significant abnormalities except decreased performance on the rotarod at age 9 months. In conclusion we show that the male MeCP2(R168X mice have a phenotype similar to that seen in MECP2 knockout mouse models and are therefore well suited for translational research. The female mice, however, have a much milder and less constant phenotype making such research with this mouse model more challenging.

  5. Characterization of the MeCP2R168X knockin mouse model for Rett syndrome.

    Science.gov (United States)

    Wegener, Eike; Brendel, Cornelia; Fischer, Andre; Hülsmann, Swen; Gärtner, Jutta; Huppke, Peter

    2014-01-01

    Rett syndrome, one of the most common causes of mental retardation in females, is caused by mutations in the X chromosomal gene MECP2. Mice deficient for MeCP2 recapitulate some of the symptoms seen in patients with Rett syndrome. It has been shown that reactivation of silent MECP2 alleles can reverse some of the symptoms in these mice. We have generated a knockin mouse model for translational research that carries the most common nonsense mutation in Rett syndrome, R168X. In this article we describe the phenotype of this mouse model. In male MeCP2(R168X) mice life span was reduced to 12-14 weeks and bodyweight was significantly lower than in wild type littermates. First symptoms including tremor, hind limb clasping and inactivity occurred at age 27 days. At age 6 weeks nest building, rotarod, open-field and elevated plus maze experiments showed impaired motor performance, reduced activity and decreased anxiety-like behavior. Plethysmography at the same time showed apneas and irregular breathing with reduced frequency. Female MeCP2R168X mice showed no significant abnormalities except decreased performance on the rotarod at age 9 months. In conclusion we show that the male MeCP2(R168X) mice have a phenotype similar to that seen in MECP2 knockout mouse models and are therefore well suited for translational research. The female mice, however, have a much milder and less constant phenotype making such research with this mouse model more challenging.

  6. Genotype of 168 child cases with high-risk thalassemia%168例高危地中海贫血儿童基因谱分析

    Institute of Scientific and Technical Information of China (English)

    刘宁毅

    2013-01-01

    Objective To analyze the genotypes of high-risk thalassemia (thalassemia) children.Methods Samples were collected from 168 children with high-risk thalassemia and the genotypes of α-thalassemia and β-thalassemia were detected.The α-thalassemia cases were detected for three alpha deletion genotypes (-SEA/-a 3.7/-a 4.2) and three non-deletion mutant α-thalassemia (HbCS HbQS HbWS).The alpha deletion genotype was detected with single-tube multiplex PCR technology,non-deletion mutant α-thalassemia and β-thalassemia (17 sites) in common Chinese people were detected with by using reverse dot blot hybridization.Results Totally 49 o-thalassemia cases were detected from 168 children at high risk of thalassemia,accounted for 29.17% ;including 39 deletion α-thalassemia cases,accounting for 79.59% of the alpha-thalassemia cases,10 non-deletion mutant a-thalassemia cases,accounting for 20.41% of α-thalassemia.Twenty-seven deletion β-thalassemia cases were detected accounting for 16.07%; including double heterozygotes in 5 cases,accounting for 2.98% ; detection composite α β-groundpoor in 12 cases,accounting for 7.14%; the total detection rate was 55.36%.Conclusions The incidence of thalassemia in Qinzhou is high,and large-scale screening of thalassemia among population of child-bearing age is indicated for improvement of prenatal care and reduce the incidence of thalassemia ion Qinzhou.%目的 应用基因诊断技术探讨高危地中海贫血(地贫)儿童的常见基因谱的分布特征. 方法 用钦州地区168例高危地贫的儿童样本分别检测α-地贫及β-地贫基因型,而α-地贫分为3种d缺失型基因检测(-SEA/,-α 3.7/-α4.2)和3种非缺失突变型仅地贫(HbCS,HbQS,HbWS).α缺失型基因检测应用单管多重PCR技术进行检测,非缺失突变型α地贫和β-地贫(检测中国人常见的17种位点)均采用反向斑点杂交法. 结果 在168例进行地贫基因检查的钦州地区高危地

  7. Clinical analysis of 168 cases oral and maxillofacial injury%口腔颌面严重损伤168例临床分析

    Institute of Scientific and Technical Information of China (English)

    王秀琴; 许文顺

    2015-01-01

    目的 探讨口腔颌面部损伤的临床特点及口腔颌面部损伤的治疗效果.方法 选取我院2004-2013年治疗的168例颌面部损伤患者的发病情况、致伤因素、外伤情况分布进行回顾性统计分析.结果 致伤原因最多为交通事故,高峰年龄组为18~35岁,唇颊软组织伤及下颌骨骨损伤最多,168例软组织伤均获治愈;87例外伤松动牙和38例牙槽骨骨折者治愈85例(97.70%),拔牙者19例;22例颌骨骨折和6例颧骨颧弓骨折均全部治愈.结论 软组织伤应尽可能Ⅰ期一次性清创缝合术、骨损伤行开放坚固内固定术、颌面部损伤的急救处理应有整体观念,应特别注意全身情况,尤其是有无颅脑损伤.

  8. Single-molecule magnet behavior in an octanuclear dysprosium(iii) aggregate inherited from helical triangular Dy3 SMM-building blocks.

    Science.gov (United States)

    Zhang, Li; Zhang, Peng; Zhao, Lang; Wu, Jianfeng; Guo, Mei; Tang, Jinkui

    2016-06-28

    An unprecedented octanuclear dysprosium(iii) cluster with the formula [Dy8L6(μ3-OH)4(μ2-CH3O)2(CH3OH)6(H2O)2]·6H2O·10CH3OH·2CH3CN () based on a nonlinearly tritopic aroylhydrazone ligand H3L has been isolated, realizing the successful linking of pairwise interesting triangular Dy3 SMMs. It is noteworthy that two enantiomers (Λ and Δ configurations) individually behaving as a coordination-induced chirality presented in the Dy3 helicate are connected in the meso Dy8 cluster. Remarkably, alternating-current magnetic susceptibility measurements revealed that the Dy8 cluster shows typical SMM behavior inherited from its Dy3 helical precursor. It is one of the rare polynuclear Lnn SMMs (n > 7) under zero dc field.

  9. Another challenge to paramagnetic relaxation theory: a study of paramagnetic proton NMR relaxation in closely related series of pyridine-derivatised dysprosium complexes.

    Science.gov (United States)

    Rogers, Nicola J; Finney, Katie-Louise N A; Senanayake, P Kanthi; Parker, David

    2016-02-14

    Measurements of the relaxation rate behaviour of two series of dysprosium complexes have been performed in solution, over the field range 1.0 to 16.5 Tesla. The field dependence has been modelled using Bloch-Redfield-Wangsness theory, allowing estimates of the electronic relaxation time, T1e, and the size of the magnetic susceptibility, μeff, to be made. Changes in relaxation rate of the order of 50% at higher fields were measured, following variation of the para-substituent in the single pyridine donor. The magnetic susceptibilities deviated unexpectedly from the free-ion values for certain derivatives in each series examined, in a manner that was independent of the electron-releasing/withdrawing ability of the pyridine substituent, suggesting that the polarisability of just one pyridine donor in octadenate ligands can play a significant role in defining the magnetic susceptibility anisotropy.

  10. Impact of UK NICE clinical guidelines 168 on referrals to a specialist academic leg ulcer service.

    Science.gov (United States)

    Davies, Huw Ob; Popplewell, Matthew; Bate, Gareth; Kelly, Lisa; Darvall, Katy; Bradbury, Andrew W

    2017-01-01

    Background Leg ulcers are a common cause of morbidity and disability and result in significant health and social care expenditure. The UK National Institute for Health and Care Excellence (NICE) Clinical Guideline (CG)168, published in July 2013, sought to improve care of patients with leg ulcers, recommending that patients with a break in the skin below the knee that had not healed within two weeks be referred to a specialist vascular service for diagnosis and management. Aim Determine the impact of CG168 on referrals to a leg ulcer service. Methods Patients referred with leg ulceration during an 18-month period prior to CG168 (January 2012-June 2013) and an 18-month period commencing six months after (January 2014-June 2015) publication of CG168 were compared. Results There was a two-fold increase in referrals (181 patients, 220 legs vs. 385 patients, 453 legs) but no change in mean age, gender or median-duration of ulcer at referral (16.6 vs. 16.2 weeks). Mean-time from referral to specialist appointment increased (4.8 vs. 6 weeks, p = 0.0001), as did legs with superficial venous insufficiency (SVI) (36% vs. 44%, p = 0.05). There was a trend towards more SVI endovenous interventions (32% vs. 39%, p = 0.271) with an increase in endothermal (2 vs. 32 legs, p = 0.001) but no change in sclerotherapy (24 vs. 51 legs) treatments. In both groups, 62% legs had compression. There was a reduction in legs treated conservatively with simple dressings (26% vs. 15%, p = 0.0006). Conclusions Since CG168, there has been a considerable increase in leg ulcer referrals. However, patients are still not referred until ulceration has been present for many months. Although many ulcers are multi-factorial and the mainstay of treatment remains compression, there has been an increase in SVI endovenous intervention. Further efforts are required to persuade community practitioners to refer patients earlier, to educate patients and encourage further investment in

  11. Identification and mapping stripe rust resistance gene YrLM168a using extreme individuals and recessive phenotype class in a complicate genetic background.

    Science.gov (United States)

    Feng, Junyan; Chen, Guoyue; Wei, Yuming; Liu, Yaxi; Jiang, Qiantao; Li, Wei; Pu, Zhien; Lan, Xiujin; Dai, Shoufen; Zhang, Min; Zheng, Youliang

    2015-12-01

    The identification and characterization of resistance genes effective against stripe rust of wheat is beneficial for modern wheat breeding programs. Molecular markers to such genes facilitate their deployment. The variety Milan has resistance that is effective against the predominant stripe rust races in the Sichuan region. Two resistant and two susceptible F8 lines from a cross between Milan and the susceptible variety Chuannong 16 were used to investigate inheritance of the Milan resistance. Three F2 populations were developed from crosses between the resistant lines and their susceptible sibling lines (LM168a × LM168c, LM168c × LM168a, LM168b × LM168d) and used for genetic analysis and molecular mapping of the genes for resistance. The stripe rust resistance in LM168a and LM168b was conferred by a single dominant gene, temporarily designated as YrLM168a. Forty-five extreme susceptible plants from the F2 families of LM168d × LM168b were genotyped with 836 simple sequence repeat (SSR) markers to map YrLM168a. YrLM168a was mapped in chromosome 6BL. The nearest flanking markers Xwmc756 and Xbarc146 were 4.6 and 4.6 cM away from the gene at both sides, respectively. The amplification results of twenty extreme resistant (IT 0) and susceptible (IT 4) F2 plants of LM168c × LM168a and LM168a × LM168c with marker Xwmc756 further validated the mapping results. The study suggested that extreme individuals and recessive phenotype class can be successfully used for mapping genes, which should be efficient and reliable. In addition, the flanking markers near YrLM168a should be helpful in marker-assisted breeding.

  12. Application of Bacillus subtilis 168 as a multifunctional agent for improvement of the durability of cement mortar.

    Science.gov (United States)

    Park, Sung-Jin; Park, Jong-Myong; Kim, Wha-Jung; Ghim, Sa-Youl

    2012-11-01

    Microbiological calcium carbonate precipitation (MCCP) has been investigated for its ability to improve the durability of cement mortar. However, very few strains have been applied to crack remediation and strengthening of cementitious materials. In this study, we report the biodeposition of Bacillus subtilis 168 and its ability to enhance the durability of cement material. B. subtilis 168 was applied to the surface of cement specimens. The results showed a new layer of deposited organic-inorganic composites on the surface of the cement paste. In addition, the water permeability of the cement paste treated with B. subtilis 168 was lower than that of non-treated specimens. Furthermore, artificial cracks in the cement paste were completely remediated by the biodeposition of B. subtilis 168. The compressive strength of cement mortar treated with B. subtilis 168 increased by about 19.5% when compared with samples completed with only B4 medium. Taken together, these findings suggest that the biodeposition of B. subtilis 168 could be used as a sealing and coating agent to improve the strength and water resistance of concrete. This is the first paper to report the application of Bacillus subtilis 168 for its ability to improve the durability of cement mortar through calcium carbonate precipitation.

  13. A PALB2-interacting domain in RNF168 couples homologous recombination to DNA break-induced chromatin ubiquitylation

    DEFF Research Database (Denmark)

    Luijsterburg, Martijn S; Typas, Dimitris; Caron, Marie-Christine

    2017-01-01

    DNA double-strand breaks (DSB) elicit a ubiquitylation cascade that controls DNA repair pathway choice. This cascade involves the ubiquitylation of histone H2A by the RNF168 ligase and the subsequent recruitment of RIF1, which suppresses homologous recombination (HR) in G1 cells. The RIF1-dependent...... recognizes histone ubiquitylation by physically associating with ubiquitin-bound RNF168. This direct interaction is mediated by the newly identified PALB2-interacting domain (PID) in RNF168 and the WD40 domain in PALB2, and drives DNA repair by facilitating the assembly of PALB2-containing HR complexes...... at DSBs. Our findings demonstrate that RNF168 couples PALB2-dependent HR to H2A ubiquitylation to promote DNA repair and preserve genome integrity....

  14. A PALB2-interacting domain in RNF168 couples homologous recombination to DNA break-induced chromatin ubiquitylation

    Science.gov (United States)

    Luijsterburg, Martijn S; Typas, Dimitris; Caron, Marie-Christine; Wiegant, Wouter W; van den Heuvel, Diana; Boonen, Rick A; Couturier, Anthony M; Mullenders, Leon H; Masson, Jean-Yves; van Attikum, Haico

    2017-01-01

    DNA double-strand breaks (DSB) elicit a ubiquitylation cascade that controls DNA repair pathway choice. This cascade involves the ubiquitylation of histone H2A by the RNF168 ligase and the subsequent recruitment of RIF1, which suppresses homologous recombination (HR) in G1 cells. The RIF1-dependent suppression is relieved in S/G2 cells, allowing PALB2-driven HR to occur. With the inhibitory impact of RIF1 relieved, it remains unclear how RNF168-induced ubiquitylation influences HR. Here, we uncover that RNF168 links the HR machinery to H2A ubiquitylation in S/G2 cells. We show that PALB2 indirectly recognizes histone ubiquitylation by physically associating with ubiquitin-bound RNF168. This direct interaction is mediated by the newly identified PALB2-interacting domain (PID) in RNF168 and the WD40 domain in PALB2, and drives DNA repair by facilitating the assembly of PALB2-containing HR complexes at DSBs. Our findings demonstrate that RNF168 couples PALB2-dependent HR to H2A ubiquitylation to promote DNA repair and preserve genome integrity. DOI: http://dx.doi.org/10.7554/eLife.20922.001 PMID:28240985

  15. The Plateau of Moment of Inertia and the Energy Gap in 161-168Yb

    Institute of Scientific and Technical Information of China (English)

    HUANG Li-Xun; QI Yan-Jun; LI Tao; LIU Shu-Xin

    2011-01-01

    The influence of the gap at Z = 70 on the alignment in 161 168Yb is studied using the particle number conserving method. If there is a gap at the Fermi surface, the occupation probability of the [523)7/2 proton orbital does not change as much as when there is no gap. The formation of the plateau of moment of inertia is sensitive to the relative position of the orbital tt[404]7/2, tt[411]1/2 and tt[523]7/2. A third backbending caused by tt[541]1/2 is predicted.%@@ The influence of the gap at Z=70 on the alignment in 161-168Yb is studied using the particle number conserving method.If there is a gap at the Fermi surface,the occupation probability of the[523]7/2 proton orbital does not change as much as when there is no gap.The formation of the plateau of moment of inertia is sensitive to the relative position of the orbital π[404]7/2,π[411]1/2 and π[523]7/2.A third backbending caused by π[541]1/2 is predicted.

  16. 26 CFR 5c.168(f)(8)-9 - Pass-through leases-transfer of only the investment tax credit to a party other than the ultimate...

    Science.gov (United States)

    2010-04-01

    ... investment tax credit to a party other than the ultimate user of the property. 5c.168(f)(8)-9 Section 5c.168(f)(8)-9 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c.168(f)(8)-9...

  17. Tuning the composition and magnetostructure of dysprosium iron garnets by Co-substitution: An XRD, FT-IR, XPS and VSM study

    Energy Technology Data Exchange (ETDEWEB)

    Tholkappiyan, R.; Vishista, K., E-mail: raovishista@gmail.com

    2015-10-01

    Graphical abstract: - Highlights: • Garnet type Dy{sub 3}Fe{sub 5−x}Co{sub x}O{sub 12} (x = 0–0.06) nanoparticles were synthesized by glycine assisted combustion method. • To investigate and confirm the phases in the synthesized ferrite nanoparticles by FT-IR and XRD analysis. • To investigate the compositional and oxidation state of the samples by X-ray photoelectron spectroscopy. • The detailed core level spectra of Dy 4d, Fe 2p, Co 2p and O 1s were analyzed using XPS. • The magnetic property was studied by VSM technique. - Abstract: We report the Co-substituting on the synthesis and properties of garnet type dysprosium ferrite nanoparticles by basic composition Dy{sub 3}Fe{sub 5−x}Co{sub x}O{sub 12} (x = 0–0.06) synthesized through glycine assisted combustion method. A possible formation mechanism of synthesized Dy{sub 3}Fe{sub 5−x}Co{sub x}O{sub 12} samples by controlling the synthesis process has been proposed. XRD, FT-IR, XPS and VSM studies were used to investigate the compositional and magnetostructural properties of the prepared nanoparticles. XRD results confirm that all the samples are single-phase cubic garnet structure with mean crystallite size of 97–105 nm obtained from Scherrer method and 95–102 nm from W–H method. FT-IR analysis shows the presence of three expected bands in the frequency limit of 450–600 cm{sup −1} attributed to metal–O stretching vibration in tetrahedral site of garnet structure. A typical survey spectrum from XPS results confirmed the presence of Dy, Fe, Co and O elements in the samples. This study also to characterize the different oxidation states of the samples by fitting the parameters of high resolution Dy 4d, Fe 2p, Co 2p and O 1s XPS spectra. The XPS data of Dy 4d spectrum show that Dy{sup 3+} ion occupy in dodecahedral (D) site. The XPS analysis of Fe 2p and Co 2p data suggests that (Fe{sup 3+} and Fe{sup 2+}), (Co{sup 3+} and Co{sup 2+}) are distributed in tetrahedral and octahedral sites

  18. Urinary phthalates from 168 girls and boys measured twice a year during a 5-year period

    DEFF Research Database (Denmark)

    Mouritsen, A; Frederiksen, H; Sørensen, K

    2013-01-01

    . Methods: This was a longitudinal study of 168 healthy children (84 girls) examined every 6 months for 5 years. Serum levels of dehydroepiandrostenedione sulfate (DHEAS), Δ4-androstenedione, testosterone, and urinary morning excretion of 14 phthalate metabolites, corresponding to 7 different phthalate...... diesters were determined. A variation in urinary excretion of phthalates was evident in each child, which made a mean of repetitive samples more representative for long-term excretion than a single determination. Results: We found that girls with excretion of monobutyl phthalate isomers (MBP) and di(2.......3 years, P = 0.005). Conclusion: Our data indicate that exposure to dibutyl phthalate isomers (DBP) (in girls) and butylbenzyl phthalate (in boys) are negatively associated with adrenal androgen levels and in boys positively associated with testosterone level at 13 years of age. High exposure to DBP...

  19. 学习利用php168cms通杀漏洞

    Institute of Scientific and Technical Information of China (English)

    clzzy

    2009-01-01

    Dhp168cms的知名度想必老鸟们还是很了解,我还是介绍一下,CMS即Content Management System,一般用于网站的内容组织发布,CMS最基本的功能当然是文章发布系统,后台提供一个文章管理的功能。前面将文章显示出来,按照栏目进行组织。当然,栏目,用户,权限管理等基本功能也是必不可少。

  20. Diagnosis and treatment of acute pancreatitis:an analysis 168 patients%急性胰腺炎168例临床诊治分析

    Institute of Scientific and Technical Information of China (English)

    王建球; 周海华; 杨廷燕; 王建平; 陈跃宇

    2014-01-01

    Objective To investigate the acute pancreatitis (acute pancreatitis,AP) of etiology,diagnosis and treatment experiences.Methods Retrospective analysis of clinical data of January 2006-January 2011 AP patients.Results In all cases,biliary AP138 (82.1%),Hyperlipidemia AP 6 (3.6%),alcoholic AP 6 (3.6%),traumatic AP5 (3.0%),idiopathic AP 2 (1.2%),and two cause more mixing of 11 cases (6.5%).Mild AP 131 (78%),severe AP 37 cases (22%).118 cases (70.2%),surgery or endoscopic therapy,50 (29.8%),non-surgical treatment,cure or improvement in 156 cases (92.9%).37 cases of severe AP total of 5 deaths (13.5%).Conclusion Clear etiology of AP,aggressive treatment,is critical to reduce complications and improve cure rates.%目的 探讨急性胰腺炎(AP)的病因及诊治经验.方法 回顾性分析168例AP患者的临床资料.结果 AP患者中,胆源性AP 138例(82.1%),高脂血症性AP 6例(3.6%),酒精性AP6例(3.6%),外伤性AP 5例(3.0%),特发性AP2例(1.2%),两种病因以上的混合性11例(6.5%).轻症AP 131例(78.0%),重症AP 37例(22.0%).118例(70.2%)行手术或内镜治疗,50例(29.8%)行非手术治疗,治愈或好转156例(92.9%).37例重症AP共死亡5例(13.5%).结论 明确AP病因,分型积极治疗,是减少并发症、提高治愈率的关键.

  1. Isomer Spectoscopy of Neutron-Rich {sup 168}Tb{sub 103}

    Energy Technology Data Exchange (ETDEWEB)

    Gurgi, L. A.; Regan, P. H.; Soderstrom, P. -A.; Watanabe, H.; Walker, P. M.; Podolyak, Zs.; Nishimura, S.; Berry, T. A.; Doornenbal, P.; Lorusso, G.; Kondev, F. G.

    2017-11-01

    In-flight fission of a 345 MeV per nucleon 238U primary beam on a 2 mm thick 9Be target has been used to produce and study the decays of a range of neutron-rich nuclei centred around the doubly mid-shell nucleus 170Dy at the RIBF Facility, RIKEN, Japan. The produced secondary fragments of interest were identified event-by-event using the BigRIPS separator. The fragments were implanted into the WAS3ABI position sensitive silicon active stopper which allowed pixelated correlations between implants and their subsequent β-decay. Discrete γ-ray transitions emitted following decays from either metastable states or excited states populated following beta decay were identified using the 84 coaxial high-purity germanium (HPGe) detectors of the EURICA spectrometer, which was complemented by 18 additional cerium-doped lanthanum bromide (LaBr3) fast-timing scintillation detectors from the FATIMA collaboration. This paper presents the internal decay of a metastable isomeric excited state in the odd-odd nucleus 168Tb, which corresponds to a single proton-neutron hole configuration in the valence maximum nucleus 170Dy. These data represent the first information on excited states in this nucleus, which is the most neutron-rich odd-odd isotope of terbium (Z=65) studied to date. Nilsson configurations associated with an axially symmetric, prolate-deformed nucleus are proposed for the 168Tb ground state the observed isomeric state by comparison with Blocked BCS-Nilsson calculations.

  2. A dysprosium-based metal-organic framework: Synthesis, characterization, crystal structure and interaction with calf thymus-DNA and bovine serum albumin

    Indian Academy of Sciences (India)

    Biplab Mondal; Buddhadeb Sen; Ennio Zangrando; Pabitra Chattopadhyay

    2014-07-01

    A dysprosium-based metallo-organic framework (MOF) containing calcium ions formulated as {Dy(pyda)3Ca1.5(H2O)6} · 5.5H2O (1) (H2pyda = pyridine-2,6-dicarboxylic acid) was solvothermally synthesized in ethanolic medium and characterized by physico-chemical and spectroscopic tools. A detailed structural analysis of the solid state structure of 1 by single crystal X-ray diffraction study showed a tricapped trigonal prism geometry for lanthanide in the [Dy(pyda)3]3− fragment. The mode of interaction of 1 with calf thymus- DNA and with protein bovine serum albumin (BSA) was investigated by using absorption and emission spectroscopic tools. The apparent association constant of complex 1 with CT-DNA was deduced from an absorption spectral study (b = 4.08 × 104 M-1). Spectral and viscosity measurements indicated a groove-binding mode of 1 with CT-DNA, and from spectroscopic study the formation of a metal complex-BSA adduct was assumed to be the result of the interaction of 1 with BSA.

  3. Dual-mode T1 and T2 magnetic resonance imaging contrast agent based on ultrasmall mixed gadolinium-dysprosium oxide nanoparticles: synthesis, characterization, and in vivo application

    Science.gov (United States)

    Tegafaw, Tirusew; Xu, Wenlong; Wasi Ahmad, Md; Baeck, Jong Su; Chang, Yongmin; Bae, Ji Eun; Chae, Kwon Seok; Kim, Tae Jeong; Lee, Gang Ho

    2015-09-01

    A new type of dual-mode T1 and T2 magnetic resonance imaging (MRI) contrast agent based on mixed lanthanide oxide nanoparticles was synthesized. Gd3+ (8S7/2) plays an important role in T1 MRI contrast agents because of its large electron spin magnetic moment resulting from its seven unpaired 4f-electrons, and Dy3+ (6H15/2) has the potential to be used in T2 MRI contrast agents because of its very large total electron magnetic moment: among lanthanide oxide nanoparticles, Dy2O3 nanoparticles have the largest magnetic moments at room temperature. Using these properties of Gd3+ and Dy3+ and their oxide nanoparticles, ultrasmall mixed gadolinium-dysprosium oxide (GDO) nanoparticles were synthesized and their potential to act as a dual-mode T1 and T2 MRI contrast agent was investigated in vitro and in vivo. The D-glucuronic acid coated GDO nanoparticles (davg = 1.0 nm) showed large r1 and r2 values (r2/r1 ≈ 6.6) and as a result clear dose-dependent contrast enhancements in R1 and R2 map images. Finally, the dual-mode imaging capability of the nanoparticles was confirmed by obtaining in vivo T1 and T2 MR images.

  4. Experimental and molecular dynamics studies of dysprosium(III) salt solutions for a better representation of the microscopic features used within the binding mean spherical approximation theory.

    Science.gov (United States)

    Ruas, Alexandre; Guilbaud, Philippe; Den Auwer, Christophe; Moulin, Christophe; Simonin, Jean-Pierre; Turq, Pierre; Moisy, Philippe

    2006-10-19

    This work is aimed at a predictive description of the thermodynamic properties of actinide(III) salt solutions at high concentration and 25 degrees C. A new solution of the binding mean spherical approximation (BIMSA) theory, based on the Wertheim formalism, for taking into account 1:1 and also 1:2 complex formation, is used to reproduce, from a simple procedure, experimental osmotic coefficient variation with concentration for three binary salt solutions of the same lanthanide(III) cation: dysprosium(III) perchlorate, nitrate, and chloride. The relevance of the fitted parameters is discussed, and their values are compared with available literature values. UV-vis/near-IR, time-resolved laser-induced fluorescence spectroscopy experiments, and molecular dynamics (MD) calculations were conducted for dilute to concentrated solutions (ca. 3 mol.kg-1) for a study of the microscopic behavior of DyCl3 binary solutions. Coupling MD calculations and extended X-ray absorption fine structure led to the determination of reliable distances. The MD results were used for a discussion of the parameters used in the BIMSA.

  5. Experimental and molecular dynamics studies of dysprosium(III) salt solutions for a better representation of the microscopic features used within the binding mean spherical approximation theory

    Energy Technology Data Exchange (ETDEWEB)

    Ruas, Alexandre; Guilbaud, Philippe; Den Auwer, Christophe; Moulin, Christophe; Simonin, Jean-Pierre; Turq, Pierre; Moisy, Philippe [DEN/DRCP/SCPS, CEA-Valrho Marcoule, BP 17171, 30207 Bagnols-sur-Ceze Cedex, DEN/DPC/SECR/LSRM, CEA-Saclay, Bat 391, BP 91191 Gif sur Yvette, Cedex (France); Laboratoire LI2C (UMR 7612), Universite Pierre et Marie Curie-Paris 6, Boite No. 51, 4 Place Jussieu, 75252 Paris Cedex 05 (France)

    2006-07-01

    This work is aimed at a predictive description of the thermodynamic properties of actinide (III) salt solutions at high concentration and 25 deg. C. A new solution of the binding mean spherical approximation (BIMSA) theory, based on the Wertheim formalism, for taking into account 1: 1 and also 1: 2 complex formation, is used to reproduce, from a simple procedure, experimental osmotic coefficient variation with concentration for three binary salt solutions of the same lanthanide (III) cation: dysprosium (III) perchlorate, nitrate, and chloride. The relevance of the fitted parameters is discussed, and their values are compared with available literature values. UV-vis/near-IR, time-resolved laser-induced fluorescence spectroscopy experiments, and molecular dynamics (MD) calculations were conducted for dilute to concentrated solutions (ca. 3 mol, kg{sup -1}) for a study of the microscopic behavior of DyCl{sub 3} binary solutions. Coupling MD calculations and extended X-ray absorption fine structure led to the determination of reliable distances. The MD results were used for a discussion of the parameters used in the BIMSA. (authors)

  6. Elucidation of Dual Magnetic Relaxation Processes in Dinuclear Dysprosium(III) Phthalocyaninato Triple-Decker Single-Molecule Magnets Depending on the Octacoordination Geometry.

    Science.gov (United States)

    Katoh, Keiichi; Aizawa, Yu; Morita, Takaumi; Breedlove, Brian K; Yamashita, Masahiro

    2017-08-07

    When applying single-molecule magnets (SMMs) to spintronic devices, control of the quantum tunneling of the magnetization (QTM) as well as a spin-lattice interactions are important. Attempts have been made to use not only coordination geometry but also magnetic interactions between SMMs as an exchange bias. In this manuscript, dinuclear dysprosium(III) (Dy(III) ) SMMs with the same octacoordination geometry undergo dual magnetic relaxation processes at low temperature. In the dinuclear Dy(III) phthalocyaninato (Pc(2-) ) triple-decker type complex [(Pc)Dy(ooPc)Dy(Pc)] (1) (ooPc(2-) =2,3,9,10,16,17,23,24-octakis(octyloxy)phthalocyaninato) with a square-antiprismatic (SAP) geometry, the ground state is divided by the Zeeman effect, and level intersection occurs when a magnetic field is applied. Due to the ground state properties of 1, since the Zeeman diagram where the levels intersect in an Hdc of 2500 Oe, two kinds of QTM and direct processes occur. However, dinuclear Dy(III) -Pc systems with C4 geometry, which have a twist angle (ϕ) of less than 45° do not undergo dual magnetic relaxation processes. From magnetic field and temperature dependences, the dual magnetic relaxation processes were clarified. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  7. Annealing behaviour and crystal structure of RF-sputtered Bi-substituted dysprosium iron-garnet films having excess co-sputtered Bi-oxide content

    Energy Technology Data Exchange (ETDEWEB)

    Vasiliev, M; Nur-E-Alam, M; Alameh, K [Electron Science Research Institute, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027 (Australia); Premchander, P; Lee, Y T [Department of Information and Communications, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712 (Korea, Republic of); Kotov, V A [Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 11 Mohovaya St, Moscow, 125009 (Russian Federation); Lee, Y P, E-mail: m.vasiliev@ecu.edu.au [Quantum Photonic Science Research Center, Department of Physics, Hanyang University, 133-791 (Korea, Republic of)

    2011-02-23

    We investigate the magneto-optic properties, crystal structure and annealing behaviour of nano-composite media with record-high magneto-optic quality exceeding the levels reported so far in sputtered iron-garnet films. Bi-substituted dysprosium-gallium iron-garnet films having excess bismuth oxide content are deposited using RF co-sputtering, and a range of garnet materials are crystallized using conventional oven-annealing processes. We report, for the first time ever, the results of optimization of thermal processing regimes for various high-performance magneto-optic iron-garnet compositions synthesized and describe the evolution of the optical and magneto-optical properties of garnet-Bi-oxide composite-material films occurring during the annealing processes. The crystallization temperature boundaries of the system (BiDy){sub 3}(FeGa){sub 5}O{sub 12} : Bi{sub 2}O{sub 3} are presented. We also report the results of x-ray diffraction and energy-dispersive x-ray spectroscopy studies of this recently developed class of high-performance magneto-optic composites. Our hypothesis of iron oxides being the cause of excess optical absorption in sputtered Bi-iron-garnet films is confirmed experimentally.

  8. miR168 influences phase transition, leaf epinasty, and fruit development via SlAGO1s in tomato.

    Science.gov (United States)

    Xian, Zhiqiang; Huang, Wei; Yang, Yingwu; Tang, Ning; Zhang, Chao; Ren, Maozhi; Li, Zhengguo

    2014-12-01

    In Arabidopsis thaliana, Argonaute1 (AGO1) interacts with miR168 to modulate the small RNA regulatory pathway. However, the underlying mechanism of regulation and relationship between AGO1 and miR168 is poorly understood in the cash crop Solanum lycopersicum (tomato). We previously found that SlAGO1A and SlAGO1B were cleaved by miR168 in tomato. In this study, we show that SlAGO1A and SlAGO1B accumulate in miR168-sponge transgenic plants, and that expression of miR168-resistant SlAGO1A (4m-SlAGO1A) and SlAGO1B (4m-SlAGO1B) in tomato results in a series of defects affecting growth rate, floral timing, leaves, and fruit. Accumulation of miR156 was found when 4m-SlAGO1A was at an early developmental stage compared to the wild type and original SlAGO1A transgenic plants, and miR172 was highly expressed in adult 4m-SlAGO1A compared to the controls. In addition, the expression of multiple small RNAs was altered in 4m-SlAGO1A. Taken together, our data provide novel insights into the interaction between SlAGO1s and miR168 in determining growth rate, phase change, leaf epinasty, fruit initiation and expansion, and other developmental processes in tomato.

  9. Global use structures of the magnetic materials neodymium and dysprosium. A scenario-based analysis of the effect of the diffusion of electromobility on the demand for rare earths; Globale Verwendungsstrukturen der Magnetwerkstoffe Neodym und Dysprosium. Eine szenariobasierte Analyse der Auswirkung der Diffusion der Elektromobilitaet auf den Bedarf an Seltenen Erden

    Energy Technology Data Exchange (ETDEWEB)

    Gloeser-Chahoud, Simon; Kuehn, Andre; Tercero Espinoza, Luis

    2016-06-15

    Neodymium-iron-boron magnets (NdFeB) have experienced a significant demand as the most powerful permanent magnet in recent years, especially for the manufacture of compact electric servomotors with high efficiency and high power density, especially for mobile applications in hybrid traction motors and electric vehicles or for electric bikes. However, NdFeB magnets are also increasingly being used in general mechanical engineering (conveying and pumping systems, tools, air conditioning systems, lift motors, etc.), in the small electric motors of conventional passenger cars or in the generators of large wind power plants with permanent magnetic direct drive. Nevertheless, there is still high uncertainty in the use structures of NdFeB magnets and the contained rare earth elements neodymium and dysprosium. An effective instrument for increasing the market transparency and the understanding of complex anthropogenic material cycles is the dynamic material flow modeling. In the present work paper, this instrument is used for an in-depth analysis of the use structures of NdFeB magnets and the contained rare earths on a global scale. The dynamic modeling of product usage cycles reveals today's usage structures and quantifies future magnetic quantities in obsolete product flows. It could be shown that the magnets in today's scrap volume are mainly contained in obsolete electronics applications such as hard disks (HDD), CD and DVD drives, which makes the recycling hardly seem to be economical due to the small magnets and the high material spread, but in the foreseeable future with larger magnetic quantities from synchronous servomotors and generators can be expected, which significantly increases the recycling potential. In a further step, the effect of the diffusion of alternative drives in the automotive market on the dysprosium requirement is analyzed using a system dynamics model and possible adaptation mechanisms in the form of different substitution effects in

  10. Prostate alpha/beta revisited - an analysis of clinical results from 14 168 patients

    Energy Technology Data Exchange (ETDEWEB)

    Dasu, Alexandru [Dept. of Radiation Physics UHL, County Council of Oestergoetland, Linkoeping (Sweden); Radiation Physics, Dept. of Medical and Health Sciences, Faculty of Health Sciences, Linkoeping Univ., Linkoeping (Sweden); Toma-Dasu, Iuliana [Medical Radiation Physics, Stockholm Univ. and Karolinska Institutet, Stockholm (Sweden)

    2012-11-15

    Purpose. To determine the dose response parameters and the fractionation sensitivity of prostate tumours from clinical results of patients treated with external beam radiotherapy. Material and methods. The study was based on five-year biochemical results from 14 168 patients treated with external beam radiotherapy. Treatment data from 11 330 patients treated with conventional fractionation have been corrected for overall treatment time and fitted with a logit equation. The results have been used to determine the optimum {alpha}/{beta} values that minimise differences in predictions from 2838 patients treated with hypofractionated schedules. Results. Conventional fractionation data yielded logit dose response parameters for all risk groups and for all definitions of biochemical failures. The analysis of hypofractionation data led to very low {alpha}/{beta} values (1-1.7 Gy) in all mentioned cases. Neglecting the correction for overall treatment time has little impact on the derivation of {alpha}/{beta} values for prostate cancers. Conclusions. These results indicate that the high fractionation sensitivity is an intrinsic property of prostate carcinomas and they support the use of hypofractionation to increase the therapeutic gain for these tumours.

  11. 168 million years old "marine lice" and the evolution of parasitism within isopods.

    Science.gov (United States)

    Nagler, Christina; Hyžný, Matúš; Haug, Joachim T

    2017-03-09

    Isopods (woodlice, slaters and their relatives) are common crustaceans and abundant in numerous habitats. They employ a variety of lifestyles including free-living scavengers and predators but also obligate parasites. This modern-day variability of lifestyles is not reflected in isopod fossils so far, mostly as the life habits of many fossil isopods are still unclear. A rather common group of fossil isopods is Urda (190-100 million years). Although some of the specimens of different species of Urda are considered well preserved, crucial characters for the interpretation of their lifestyle (and also of their phylogenetic position), have so far not been accessible. Using up-to-date imaging methods, we here present morphological details of the mouthparts and the thoracopods of 168 million years old specimens of Urda rostrata. Mouthparts are of a sucking-piercing-type morphology, similar to the mouthparts of representatives of ectoparasitic isopods in groups such as Aegidae or Cymothoidae. The thoracopods bear strong, curved dactyli most likely for attaching to a host. Therefore, mouthpart and thoracopod morphology indicate a parasitic lifestyle of Urda rostrata. Based on morphological details, Urda seems deeply nested within the parasitic isopods of the group Cymothoida. Similarities to Aegidae and Cymothoidae are interpreted as ancestral characters; Urda is more closely related to Gnathiidae, which is therefore also interpreted as an ingroup of Cymothoida. With this position Urda provides crucial information for our understanding of the evolution of parasitism within isopods. Finally, the specimens reported herein represent the oldest parasitic isopods known to date.

  12. The SAMI Pilot Survey: Stellar Kinematics of Galaxies in Abell 85, 168 and 2399

    CERN Document Server

    Fogarty, L M R; Owers, M S; Croom, S M; Bekki, K; Houghton, R C W; van de Sande, J; D'Eugenio, F; Cecil, G N; Colless, M M; Bland-Hawthorn, J; Brough, S; Cortese, L; Davies, R L; Jones, D H; Pracy, M; Allen, J T; Bryant, J J; Goodwin, M; Green, A W; Konstantopoulos, I S; Lawrence, J S; Lorente, N P F; Richards, S; Sharp, R G

    2015-01-01

    We present the SAMI Pilot Survey, consisting of integral field spectroscopy of 106 galaxies across three galaxy clusters, Abell 85, Abell 168 and Abell 2399. The galaxies were selected by absolute magnitude to have $M_r<-20.25$ mag. The survey, using the Sydney-AAO Multi-object Integral field spectrograph (SAMI), comprises observations of galaxies of all morphological types with 75\\% of the sample being early-type galaxies (ETGs) and 25\\% being late-type galaxies (LTGs). Stellar velocity and velocity dispersion maps are derived for all 106 galaxies in the sample. The $\\lambda_{R}$ parameter, a proxy for the specific stellar angular momentum, is calculated for each galaxy in the sample. We find a trend between $\\lambda_{R}$ and galaxy concentration such that LTGs are less concentrated higher angular momentum systems, with the fast-rotating ETGs (FRs) more concentrated and lower in angular momentum. This suggests that some dynamical processes are involved in transforming LTGs to FRs, though a significant ove...

  13. Evaluación sobre la seguridad de la acupuntura en 297.168 punturas

    Directory of Open Access Journals (Sweden)

    Luis Fernando Torres-Tascón

    2014-07-01

    Full Text Available Con el propósito de obtener una casuística propia y de determinar la seguridad de la práctica de la acupuntura en nuestro medio, se realizó el seguimiento de la incidencia de eventos adversos en la consulta particular de un médico acupunturista con amplia experiencia clínica durante un periodo de 72 meses, en el que se realizaron 24.707 consultas. Se encontraron 260 eventos adversos de 297.168 punturas, con una incidencia de 0,87 por 1.000 y 7 de 2.390 puntos moxados para una incidencia de 2,92 por 1.000. El evento adverso más frecuente para la acupuntura fue la presentación de equimosis-hematomas con una incidencia de 0,65 por 1.000. Para la moxibustión el único evento adverso que se presentó fue la quemadura, con una incidencia de 2,92 por 1.000. No hubo ningún efecto adverso mayor que requiriera intervención médica. En conclusión, se puede considerar que la acupuntura en manos expertas es una práctica médica segura.

  14. 25 CFR 1000.168 - Is it mandatory to go through the information phase before initiating the negotiation phase?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false Is it mandatory to go through the information phase... Funding Agreements Negotiation of Initial Annual Funding Agreements § 1000.168 Is it mandatory to go through the information phase before initiating the negotiation phase? No, a Tribe/Consortium may go...

  15. 40 CFR 63.168 - Standards: Valves in gas/vapor service and in light liquid service.

    Science.gov (United States)

    2010-07-01

    ... § 63.168 Standards: Valves in gas/vapor service and in light liquid service. (a) The provisions of this section apply to valves that are either in gas service or in light liquid service. (1) The provisions are... 40 Protection of Environment 9 2010-07-01 2010-07-01 false Standards: Valves in gas/vapor...

  16. Ectopic expression of RNF168 and 53BP1 increases mutagenic but not physiological non-homologous end joining.

    Science.gov (United States)

    Zong, Dali; Callén, Elsa; Pegoraro, Gianluca; Lukas, Claudia; Lukas, Jiri; Nussenzweig, André

    2015-05-26

    DNA double strand breaks (DSBs) formed during S phase are preferentially repaired by homologous recombination (HR), whereas G1 DSBs, such as those occurring during immunoglobulin class switch recombination (CSR), are repaired by non-homologous end joining (NHEJ). The DNA damage response proteins 53BP1 and BRCA1 regulate the balance between NHEJ and HR. 53BP1 promotes CSR in part by mediating synapsis of distal DNA ends, and in addition, inhibits 5' end resection. BRCA1 antagonizes 53BP1 dependent DNA end-blocking activity during S phase, which would otherwise promote mutagenic NHEJ and genome instability. Recently, it was shown that supra-physiological levels of the E3 ubiquitin ligase RNF168 results in the hyper-accumulation of 53BP1/BRCA1 which accelerates DSB repair. Here, we ask whether increased expression of RNF168 or 53BP1 impacts physiological versus mutagenic NHEJ. We find that the anti-resection activities of 53BP1 are rate-limiting for mutagenic NHEJ but not for physiological CSR. As heterogeneity in the expression of RNF168 and 53BP1 is found in human tumors, our results suggest that deregulation of the RNF168/53BP1 pathway could alter the chemosensitivity of BRCA1 deficient tumors.

  17. The MMPI-168(L) and ADD in assessing psychopathology in individuals with mental retardation : between and within instrument associations

    NARCIS (Netherlands)

    McDaniel, WF; Passmore, CE; Sewell, HM

    2003-01-01

    An abbreviated version of the Minnesota Multiphasic Personality Inventory, the MMPI-168(L), modified for use with clients who have moderate or mild mental retardation, was administered to 58 clients, most of whom had co-existing dual psychiatric diagnoses. Another recently developed instrument, the

  18. 78 FR 50112 - 168th Meeting of the Advisory Council on Employee Welfare and Pension Benefit Plans; Notice of...

    Science.gov (United States)

    2013-08-16

    ... Benefits Security Administration 168th Meeting of the Advisory Council on Employee Welfare and Pension... pdf format transmitted to good.larry@dol.gov . It is requested that statements not be included in the... Administration. BILLING CODE 4510-29-P...

  19. 26 CFR 1.168A-6 - Depreciation of portion of emergency facility not subject to amortization.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Depreciation of portion of emergency facility... for Individuals and Corporations § 1.168A-6 Depreciation of portion of emergency facility not subject... in lieu of any deduction for depreciation which would otherwise be allowable under section 167...

  20. The role of dysprosium on the structural and magnetic properties of (Nd1-xDyx)2Fe14B nanoparticles

    Science.gov (United States)

    Rahimi, Hamed; Ghasemi, Ali; Mozaffarinia, Reza; Tavoosi, Majid

    2017-02-01

    In current work, Nd2Fe14B nanoparticles was synthesized by sol-gel method. Dysprosium powders were added into Nd2Fe14B nanoparticles by mechanical alloying process in order to enhancement of coercivity. The phase analysis, structure, and magnetic properties of annealed (Nd1-xDyx)2Fe14B nanoparticles with different Dy-content (x=0.1, 0.2, 0.3, 0.4, 0.5, 0.6) were investigated by employing X-ray diffraction, X-ray photoelectron spectroscopy, energy dispersive spectroscopy, field emission scanning electron microscope, transmission electron microscope and vibrating sample magnetometer techniques. The results showed that with an increase in Dy amounts, the coercivity of particles increased from 2.9 kOe to 13.4 kOe and then decreased to 5.6 kOe. By adding an optimum amount of Dy (x=0.4), the coercivity was significantly increased from 2.9 kOe to 13.4 kOe. The average particle size of annealed (Nd1-xDyx)2Fe14B nanoparticles was below 10 nm. Magnetization reversal studies indicate that the coercivity of milled and annealed (Nd1-xDyx)2Fe14B nanoparticles is controlled by the nucleation of reversed magnetic domains. The experimental results in the angular dependence of coercivity for (Nd1-xDyx)2Fe14B permanent magnets showed that the normalized coercivity of the permanent magnets Hc(θ)/Hc(0) increases from 1 to about 1.2-1.5 with increasing θ from 0 to about π/3, for x=0.4-0.6.

  1. Experimental and predicted crystal structures of Pigment Red 168 and other dihalogenated anthanthrones.

    Science.gov (United States)

    Schmidt, Martin U; Paulus, Erich F; Rademacher, Nadine; Day, Graeme M

    2010-10-01

    The crystal structures of 4,10-dibromo-anthanthrone (Pigment Red 168; 4,10-dibromo-dibenzo[def,mno]chrysene-6,12-dione), 4,10-dichloro- and 4,10-diiodo-anthanthrone have been determined by single-crystal X-ray analyses. The dibromo and diiodo derivatives crystallize in P2(1)/c, Z = 2, the dichloro derivative in P1, Z = 1. The molecular structures are almost identical and the unit-cell parameters show some similarities for all three compounds, but the crystal structures are neither isotypic to another nor to the unsubstituted anthanthrone, which crystallizes in P2(1)/c, Z = 8. In order to explain why the four anthanthrone derivatives have four different crystal structures, lattice-energy minimizations were performed using anisotropic atom-atom model potentials as well as using the semi-classical density sums (SCDS-Pixel) approach. The calculations showed the crystal structures of the dichloro and the diiodo derivatives to be the most stable ones for the corresponding compound; whereas for dibromo-anthanthrone the calculations suggest that the dichloro and diiodo structure types should be more stable than the experimentally observed structure. An experimental search for new polymorphs of dibromo-anthanthrone was carried out, but the experiments were hampered by the remarkable insolubility of the compound. A metastable nanocrystalline second polymorph of the dibromo derivative does exist, but it is not isostructural to the dichloro or diiodo compound. In order to determine the crystal structure of this phase, crystal structure predictions were performed in various space groups, using anisotropic atom-atom potentials. For all low-energy structures, X-ray powder patterns were calculated and compared with the experimental diagram, which consisted of a few broad lines only. It turned out that the crystallinity of this phase was not sufficient to determine which of the calculated structures corresponds to the actual structure of this nanocrystalline polymorph.

  2. The genetic and acute oral toxicity effect of Bacillus amyloliquefaciens BA-16-8 on mice%Bacillus amyloliquefaciens BA-16-8对小鼠的毒性研究

    Institute of Scientific and Technical Information of China (English)

    付瑞敏; 邢文会; 陈五岭

    2016-01-01

    Bacillus amyloliquefaciens BA-16-8是一株具有高效拮抗Penicillium expansum的生防菌,对苹果采后青霉病具有显著的防治效果.为了解该菌株对动物及人的安全性,通过Ames实验、骨髓微核实验、精子畸形实验及28 d喂养实验等测定了菌株发酵液对小鼠的遗传毒性及急性经口毒性影响.结果表明,菌株BA-16-8菌悬液(1×1O8 cfu/mL)对小鼠无毒,故属安全级别.此外,菌株BA-16-8菌悬液对小鼠无致突变作用.喂养过程中,相对比对照组,实验组小鼠的血常规及生理生化指标虽在实验前期有所差异,但随着处理时间延长,差异逐渐缩小至不显著,此外,实验组小鼠的脏器指数与对照组无显著差异.由此可推断,Bacillusamyloliquefaciens BA-16-8的菌悬液对哺乳动物安全,可用于苹果采摘后的涂膜处理及防腐保鲜.

  3. Determinative Analysis of Tissue Matching Type for Donator and Acceptor of Renal Trasplantation(168 Cases Report)%168例肾移植供、受者组织配型检测分析

    Institute of Scientific and Technical Information of China (English)

    杨万明; 何俊杰; 卢俊; 杨美华; 刘国富

    2002-01-01

    @@ 1999年3月至2001年10月我院采用美国莱姆德公司研制的HLA单克隆抗体试剂板对168例肾移植供、受者进行HLA抗原检测配型,取得了十分满意的效果,现介绍如下.

  4. 17 CFR 1.68 - Customer election not to have funds, carried by a futures commission merchant for trading on a...

    Science.gov (United States)

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Customer election not to have... execution facility, separately accounted for and segregated. 1.68 Section 1.68 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION GENERAL REGULATIONS UNDER THE COMMODITY EXCHANGE ACT...

  5. Exogenous plant MIR168a specifically targets mammalian LDLRAP1: evidence of cross-kingdom regulation by microRNA

    Institute of Scientific and Technical Information of China (English)

    Lin Zhang; Xing Cai; Yuan Yin; Cheng Wang; Tianfu Zhang; Dihan Zhu; Dianmu Zhang; Jie Xu; Qun Chen; Yi Ba; Jing Liu; Dongxia Hou; Qiang Wang; Jianqun Chen; Jin Wang; Meng Wang; Qipeng Zhang; Junfeng Zhang; Ke Zen; Chen-Yu Zhang; Xi Chen; Donghai Li; Lingyun Zhu; Yujing Zhang; Jing Li; Zhen Bian; Xiangying Liang

    2012-01-01

    In the initial published version of this article,an error was made during the assembly of Figure 5B.Figure 5B is a representative image of western blots,which shows that rice-derived MIR 168a can down-regulate LDLRAP 1 expression in mouse liver and that the injection of antiMIR168a rescued the expression of LDLRAP1.After the initial publishing of this article,it has been brought to our attention that the image of the internal control in previous Figure 5B showing the western blot results of α-tubulin,actually duplicated the images in other parts of the paper (specifically,the left two lanes of the αt-tubulin western data in previous Figure 5B duplicated the α-tubulin image of Figure 3C,while the right two lanes duplicated the α-tubulin image of Figure S3D).This error in previous Figure 5B was inadvertently introduced during the assembly of figure panels for this paper.Moreover,after a careful re-examination of the figure legend,we also found that the figure legend of previous Figure 5 was not precise.The corrected figure and its legend are provided below.The detailed results of all the western blot experiments analyzing liver samples of individual mice from different groups (chow diet,rice,rice +anti-ncRNA,rice + anti-MIR168a) are also available for interested readers at our website:http://mcube.nju.edu.cn/mir 168a_regulates_ldlrap1.

  6. RRS "Charles Darwin" Cruise CD168, 02 Feb - 16 Feb 2005. Submarine landslides around the Cape Verde Islands

    OpenAIRE

    Masson, D. G.

    2005-01-01

    Catastrophic large-scale landslides are a fundamental process in the formation of many oceanic islands. The main aim of cruise CD168 was to carry out a reconnaissance survey of the influence of landsliding on the Cape Verde islands, in the eastern central Atlantic, and to compare this with the known effects of landsliding on the Canary Islands. The data collected during RRS Charles Darwin Cruise, when combined with synthetic aperture radar imagery of the subaerial islands, show clear evidence...

  7. RNF168, a new RING finger, MIU-containing protein that modifies chromatin by ubiquitination of histones H2A and H2AX

    Directory of Open Access Journals (Sweden)

    Gaudino Giovanni

    2009-06-01

    Full Text Available Abstract Background Modulation of chromatin structure has emerged as a critical molecular device to control gene expression. Histones undergo different post-translational modifications that increase chromatin accessibility to a number of regulatory factors. Among them, histone ubiquitination appears relevant in nuclear processes that govern gene silencing, either by inhibiting or activating transcription, and maintain genome stability, acting as scaffold to properly organize the DNA damage response. Thus, it is of paramount importance the identification and the characterization of new ubiquitin ligases that address histones. Results We identified and characterized RNF168, a new chromatin-associated RING finger protein. We demonstrated that RNF168 is endowed with ubiquitin ligase activity both in vitro and in vivo, which targets histones H2A and H2AX, but not H2B, forming K63 polyubiquitin chains. We previously described the presence within RNF168 sequence of two MIU domains, responsible for the binding to ubiquitinated proteins. Here we showed that inactivation of the MIUs impairs ubiquitin binding ability in vitro and reduces chromatin association of RNF168 in vivo. Moreover, upon formation of DNA double strand breaks induced by chemical and physical agents, RNF168 is recruited to the DNA damage foci, where it co-localizes with γH2AX and 53BP1. The localization of RNF168 at the site of damage highly increases the local concentration of ubiquitinated proteins and determines the prolonged ubiquitination signal. Conclusion The RING finger protein RNF168 is a new ubiquitin ligase that functions as chromatin modifier, through histone ubiquitination. We hypothesize a dual function for RNF168. In normal condition RNF168 modifies chromatin structure by modulating ubiquitination of histone H2A. Upon DNA lesions, RNF168 is recruited to DNA damage response foci where it contributes to increase the amount of ubiquitinated proteins, thereby facilitating

  8. RNF168, a new RING finger, MIU-containing protein that modifies chromatin by ubiquitination of histones H2A and H2AX.

    Science.gov (United States)

    Pinato, Sabrina; Scandiuzzi, Cristina; Arnaudo, Nadia; Citterio, Elisabetta; Gaudino, Giovanni; Penengo, Lorenza

    2009-06-05

    Modulation of chromatin structure has emerged as a critical molecular device to control gene expression. Histones undergo different post-translational modifications that increase chromatin accessibility to a number of regulatory factors. Among them, histone ubiquitination appears relevant in nuclear processes that govern gene silencing, either by inhibiting or activating transcription, and maintain genome stability, acting as scaffold to properly organize the DNA damage response. Thus, it is of paramount importance the identification and the characterization of new ubiquitin ligases that address histones. We identified and characterized RNF168, a new chromatin-associated RING finger protein. We demonstrated that RNF168 is endowed with ubiquitin ligase activity both in vitro and in vivo, which targets histones H2A and H2AX, but not H2B, forming K63 polyubiquitin chains. We previously described the presence within RNF168 sequence of two MIU domains, responsible for the binding to ubiquitinated proteins. Here we showed that inactivation of the MIUs impairs ubiquitin binding ability in vitro and reduces chromatin association of RNF168 in vivo. Moreover, upon formation of DNA double strand breaks induced by chemical and physical agents, RNF168 is recruited to the DNA damage foci, where it co-localizes with gammaH2AX and 53BP1. The localization of RNF168 at the site of damage highly increases the local concentration of ubiquitinated proteins and determines the prolonged ubiquitination signal. The RING finger protein RNF168 is a new ubiquitin ligase that functions as chromatin modifier, through histone ubiquitination. We hypothesize a dual function for RNF168. In normal condition RNF168 modifies chromatin structure by modulating ubiquitination of histone H2A. Upon DNA lesions, RNF168 is recruited to DNA damage response foci where it contributes to increase the amount of ubiquitinated proteins, thereby facilitating the downstream signalling cascade.

  9. Effects of Ultraviolet (UV) on Degradation of Irgafos 168 and Migration of Its Degradation Products from Polypropylene Films.

    Science.gov (United States)

    Yang, Yueping; Hu, Changying; Zhong, Huaining; Chen, Xi; Chen, Rujia; Yam, Kit L

    2016-10-05

    The effects of ultraviolet (UV) irradiation on the degradation of Irgafos 168 and the migration of its two degradation products, 2,4-di-tert-butylphenol and tris(2,4-di-tert-butylphenyl)phosphate, from polypropylene (PP) were investigated. A blown film machine was used to extrude PP films containing Irgafos 168, the films were stored in the dark for 45 days, two UV treatments and sunlight exposure were applied to the films, and GC-MS was used for degradation and migration studies. Extrusion, storage, UV treatments, and sunlight exposure significantly affected concentrations of Irgafos 168 and the degradation products. 2,4-Di-tert-butylphenol was the major degradation product produced by UV irradiation, but tris(2,4-di-tert-butylphenyl)phosphate was the major degradation product produced by extrusion, storage, and sunlight exposure. The degradation products have no or little health risk, because migration study and threshold of toxicological concern (TTC) analysis show that experimental maximum migration of 2,4-di-tert-butylphenol and tris(2,4-di-tert-butylphenyl)phosphate are only 2 and 53% of the theoretical maximum migration amounts, respectively.

  10. The Shape of LITTLE THINGS Dwarf Galaxies DDO 46 and DDO 168: Understanding the stellar and gas kinematics

    CERN Document Server

    Johnson, Megan C; Wood, Sarah; Oh, Se-Heon; Zhang, Hong-Xin; Herrmann, Kimberly A; Levine, Stephen E

    2015-01-01

    We present the stellar and gas kinematics of DDO 46 and DDO 168 from the LITTLE THINGS survey and determine their respective Vmax/sigma_z,0 values. We used the KPNO's 4-meter telescope with the Echelle spectrograph as a long-slit spectrograph. We acquired spectra of DDO 168 along four position angles by placing the slit over the morphological major and minor axes and two intermediate position angles. However, due to poor weather conditions during our observing run for DDO 46, we were able to extract only one useful data point from the morphological major axis. We determined a central stellar velocity dispersion perpendicular to the disk, sigma_z,0, of 13.5+/-8 km/s for DDO 46 and of 10.7+/-2.9 km/s for DDO 168. We then derived the maximum rotation speed in both galaxies using the LITTLE THINGS HI data. We separated bulk motions from non-circular motions using a double Gaussian decomposition technique and applied a tilted-ring model to the bulk velocity field. We corrected the observed HI rotation speeds for ...

  11. Dysprosium(III) complexes with a square-antiprism configuration featuring mononuclear single-molecule magnetic behaviours based on different β-diketonate ligands and auxiliary ligands.

    Science.gov (United States)

    Zhang, Sheng; Ke, Hongshan; Shi, Quan; Zhang, Jangwei; Yang, Qi; Wei, Qing; Xie, Gang; Wang, Wenyuan; Yang, Desuo; Chen, Sanping

    2016-03-28

    Three mononuclear dysprosium(III) complexes derived from three β-diketonate ligands, 4,4,4-trifluoro-1-(4-methylphenyl)-1,3-butanedione (tfmb), 4,4,4-trifluoro-1-(4-fluorophenyl)-1,3-butanedione (tffb) and 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione (tfnb) as well as auxiliary ligands, 5-nitro-1,10-phenanthroline (5-NO2-Phen), DMF and 2,2'-bipyridine (bpy) have been synthesized and structurally characterized, namely [Dy(5-NO2-Phen)(tfmb)3] (1), [Dy(DMF)2(tffb)3] (2) and [Dy(bpy)2(tfnb)3]·0.5(1,4-dioxane) (3). The metal ions in 1-3 adopt an approximately square-antiprismatic (SAP) coordination environment with D4d axial symmetry. The magnetic properties of 1-3 have been investigated, displaying weak out-of-phase AC signals under a zero-DC field. With an applied DC field of 1200 Oe, the quantum tunnelling of the magnetization was suppressed in 1-3 with the pre-exponential factor τ0 = 5.3 × 10(-7) s and the effective barrier ΔE/kB = 83 K for 1 as well as the pre-exponential factor τ0 = 3.09 × 10(-7) s and the effective barrier ΔE/kB = 39 K for 3. Interestingly, for the frequency dependence of the out-of-phase (χ'') of the AC susceptibility of 2, two slow relaxation of the magnetization processes occurred under the applied magnetic field of 1200 Oe, corresponding to the fast relaxation (FR) phase and slow relaxation (SR) phase, respectively. Arrhenius analysis gave the effective energy barrier (ΔE/kB) of 55 K and the pre-exponential factor (τ0) of 8.23 × 10(-12) for the SR. It is thus very likely that the FR process in complex 2 results from QTM enhanced by dipolar interactions between the Dy ions or the presence of the applied field. The structure-property relationship of some Dy(III) based mononuclear SMMs with the SAP configuration was further discussed.

  12. Magnetic Phase Transition of Nanocrystalline Bulk Metal Gadolinium and Dysprosium%纳米块体金属钆和镝的磁性相变分析

    Institute of Scientific and Technical Information of China (English)

    刘凤艳; 侯碧辉; 岳明; 王克军

    2011-01-01

    The magnetic properties of bulk nanocrystalline metal gadolinium (Gd) and dysprosium (Dy)samples were studied.The magnetization and Curie temperature TC of nanocrystalline Gd and Dy decreased usually as compared with the polycrystal.However,when the mean grain size was 10 nm, the Curie temperature Tc of nanocrystalline Dy increased to 100 K instead and there was an antiferromagnetic phase in nanocrystalline Gd.According to the calculation based on Ruderman-Kittel-Kasuya-Yosida exchange interaction, the exchange integral of the grain boundary atoms and crystalline surface atoms had its sign changed from plus to minus or vice versa, and there were three orderly phases in the steady state with the lowest energy, ferromagnetic phase, antiferromagnetic phase and fan phase.For the nanocrystals with mean grain size of 10 nm, the proportion of grain boundary to crystalline surface atoms was high, and as the result of superposition of the three phases, and there appeared a peak near the phase transition temperature for the nanocrystalline Gd.While for the Dy, the magnetization decreased gently with temperature, and showing a higher Curie temperature than in the case of the polycrystal.%对纳米晶钆(Gd)和镝(Dy)块体材料的磁性进行了研究.与多晶比较,通常纳米晶的磁化强度减小,居里温度TC降低,但平均粒径为10 nm的纳米晶Dy的居里温度TC反而升高到100 K,平均粒径为10 nm的纳米晶Gd中还存在明显的反铁磁相.通过RKKY交换作用的计算知道,晶面晶界处原子的交换积分会发生正负号的变化,能量最低的稳定状态对应三种有序相:铁磁相、反铁磁相和扇相,晶粒中在一定条件下出现三相共存.对于平均粒径为10 nm的纳米晶,晶面晶界处原子所占比例很大,三相叠加的结果,对于Gd,即是在相变点附近出现磁化强度尖峰;对于Dy,则是磁化强度随温度升高下降缓慢,表现为居里温度TC比多晶升高.

  13. Clinical Observation of Cupping Therapy in the Treatment of 168 Cases of Pneumonia in Children%拔火罐疗法治疗168例小儿肺炎的临床观察

    Institute of Scientific and Technical Information of China (English)

    李莉

    2014-01-01

    Objective To observe the clinical ef icacy and safety of cupping therapy in the treatment of pneumonia in children. Methods A retrospective case-control study. 168 cases of children with pneumonia were randomly divided into two groups, treatment group: on the basis of conventional therapy, 168 cases of pneumonia in children with back cupping therapy, once a day, continuous 3~5 days. Comparison of two groups of children with symptoms and signs disappeared time. Results In treatment group, cough, asthma, rales disappearance time was significantly shorter than the control group ( < 0.01). Combined with the total ef ective rate of treatment group 92.8%, treatment group total ef ectiveness is 80.1%, there was a statistical y significant dif erence between the two groups ( <0.01). Conclusion Cupping therapy in children with pneumonia, obvious ef ect, shorten the course of treatment, safety.%目的:观察拔火罐疗法治疗小儿肺炎的临床疗效及安全性。方法采用回顾性对照研究的方法。168例小儿肺炎患儿随机分成两组,治疗组:在常规治疗的基础上,对168例小儿肺炎患儿加用背部拔火罐治疗,1次/d,连续3~5d。比较两组患儿症状及体征消失的时间。结果治疗组咳嗽、气喘、啰音消失时间较对照组明显缩短(P<0.01)。联用治疗组总有效率为92.8豫,基础治疗组总有效率为80.1豫,两组比较差异有统计学上意义(P<0.01)。结论拔火罐治疗小儿肺炎,效果显著,疗程缩短,安全。

  14. Clinical Observation of the Treatment with Drug Injection to Zususanli Point for 168 cases of Children Summer and Autumn Diarrhea%足三里穴药物封闭治疗夏秋季小儿腹泻168

    Institute of Scientific and Technical Information of China (English)

    唐迎红; 徐邴重

    2007-01-01

    小儿腹泻是一种多在夏秋季由病毒感染或饮食不当、受凉等诸多原因引起的儿科疾病,属中医“泄泻”范畴。临床不少患儿应用中西药物及其他方法治疗效果不佳。笔者用药物封闭足三里穴治疗168例,取得了较满意的效果,现总结如下。

  15. Extension of the energy range of the experimental activation cross-sections data of longer-lived products of proton induced nuclear reactions on dysprosium up to 65 MeV

    CERN Document Server

    Tárkányi, F; Takács, S; Hermanne, A; Ignatyuk, A V

    2016-01-01

    Activation cross-sections data of longer-lived products of proton induced nuclear reactions on dysprosium were extended up to 65 MeV by using stacked foil irradiation and gamma spectrometry experimental methods. Experimental cross-sections data for the formation of the radionuclides $^{159}$Dy, $^{157}$Dy, $^{155}$Dy, $^{161}$Tb, $^{160}$Tb, $^{156}$Tb, $^{155}$Tb, $^{154m2}$Tb, $^{154m1}$Tb, $^{154g}$Tb, $^{153}$Tb, $^{152}$Tb and $^{151}$Tb are reported in the 36-65 MeV energy range, and compared with an old dataset from 1964. The experimental data were also compared with the results of cross section calculations of the ALICE and EMPIRE nuclear model codes and of the TALYS nuclear reaction model code as listed in the latest on-line libraries TENDL 2013.

  16. Extension of the energy range of the experimental activation cross-sections data of longer-lived products of proton induced nuclear reactions on dysprosium up to 65MeV.

    Science.gov (United States)

    Tárkányi, F; Ditrói, F; Takács, S; Hermanne, A; Ignatyuk, A V

    2015-04-01

    Activation cross-sections data of longer-lived products of proton induced nuclear reactions on dysprosium were extended up to 65MeV by using stacked foil irradiation and gamma spectrometry experimental methods. Experimental cross-sections data for the formation of the radionuclides (159)Dy, (157)Dy, (155)Dy, (161)Tb, (160)Tb, (156)Tb, (155)Tb, (154m2)Tb, (154m1)Tb, (154g)Tb, (153)Tb, (152)Tb and (151)Tb are reported in the 36-65MeV energy range, and compared with an old dataset from 1964. The experimental data were also compared with the results of cross section calculations of the ALICE and EMPIRE nuclear model codes and of the TALYS nuclear reaction model code as listed in the latest on-line libraries TENDL 2013. Copyright © 2015. Published by Elsevier Ltd.

  17. No drain, autologous transfusion drain or suction drain? A randomised prospective study in total hip replacement surgery of 168 patients

    OpenAIRE

    Cheung, G.; Carmont, MR; Bing, AJ; Kuiper, JH; Alcock, RJ; Graham, NM

    2010-01-01

    We performed a prospective, randomised controlled trial to assess the differences in the use of a conventional suction drain, an Autologous Blood Transfusion (ABT) drain and no drain, in 168 patients. There was no significant difference between the drainage from ABT drains ( mean : 345 ml) and the suction drain (314 ml). Forty percent of patients receiving a suction drain had a haemoglobin level less than 10 g/dL at 24 hours, compared to 35% with no drain and 28% with an ABT drain. Patients t...

  18. 168 Cases of Chinese Water Acupoint Injection Treatment for Nerve Root Type Cervical Spondylosis%中药水针穴位注射治疗神经根型颈椎病168

    Institute of Scientific and Technical Information of China (English)

    张四凤

    2013-01-01

    cervical vertebra disease is a common disease in the elderly, disease, due to the degeneration of intervertebral disc, hyperosteogeny, joint loosening, dislocation or oppression of nerve root stimulation of corresponding to the neck, shoulder and arm pain and numbness, pain radiating to neck nerve on, distal parts, heavy limbs weakness, numbness in the fingers and a series of syndrome. A lot of treatment. The author in 2011 July ~2013 year in July by Chinese medicine acupoint injection for treatment of nerve root type cervical spondylosis ef icacy of 168 cases.%颈椎病是一种中老年常见病,多发病,因椎间盘退变,骨质增生,关节松动,错位刺激或压迫相应神经根,出现以颈项肩臂疼痛麻木,颈项神经串痛,向肢体远端部位放射,肢体沉重无力,手指麻木等一系列综合征。治疗方法很多。笔者2011年7月~2013年7月采用中药水针穴位注射治疗神经根型颈椎病168例疗效满意。

  19. The SAMI Pilot Survey: The Kinematic Morphology-Density Relation in Abell 85, Abell 168 and Abell 2399

    CERN Document Server

    Fogarty, L M R; Owers, Matt S; Brough, S; Croom, Scott M; Pracy, Michael B; Houghton, R C W; Bland-Hawthorn, Joss; Colless, Matthew; Davies, Roger L; Jones, D Heath; Allen, J T; Bryant, Julia J; Goodwin, Michael; Green, Andrew W; Konstantopoulos, Iraklis S; Lawrence, J S; Richards, Samuel; Cortese, Luca; Sharp, Rob

    2014-01-01

    We examine the kinematic morphology of early-type galaxies (ETGs) in three galaxy clusters Abell 85, 168 and 2399. Using data from the Sydney-AAO Multi-object Integral field spectrograph (SAMI) we measured spatially-resolved kinematics for 79 ETGs in these clusters. We calculate $\\lambda_{R}$, a proxy for the projected specific stellar angular momentum, for each galaxy and classify the 79 ETGs in our samples as fast or slow rotators. We calculate the fraction of slow rotators in the ETG populations ($f_{SR}$) of the clusters to be $0.21\\pm0.08$, $0.08\\pm0.08$ and $0.12\\pm0.06$ for Abell 85, 168 and 2399 respectively, with an overall fraction of $0.15\\pm0.04$. These numbers are broadly consistent with the values found in the literature, confirming recent work asserting that the fraction of slow rotators in the ETG population is constant across many orders of magnitude in global environment. We examine the distribution of kinematic classes in each cluster as a function of environment using the projected density...

  20. Development of an intermolecular transposition assay system in Bacillus subtilis 168 using IS4Bsu1 from Bacillus subtilis (natto).

    Science.gov (United States)

    Takahashi, Kiwamu; Sekine, Yasuhiko; Chibazakura, Taku; Yoshikawa, Hirofumi

    2007-08-01

    Most of the spontaneous poly-gamma-glutamate (gamma-PGA)-deficient mutants of Bacillus subtilis (natto) appear to have resulted from the insertion of IS4Bsu1 exclusively into the comP gene. However, complete genomic analysis of B. subtilis 168, a close relative of B. subtilis (natto), revealed no IS4Bsu1 insertion. Preliminary experiments using a transformable 'natto' strain indicated that the frequency of transposition of IS4Bsu1 was exceptionally high under competence-developing conditions. On the other hand, such high-frequency transposition was not observed when cells were grown in a rich medium, such as LB medium, suggesting that there must be suitable environmental conditions that give rise to the transposition of IS4Bsu1. To assess the behaviour of IS4Bsu1 and explore any host factors playing roles in IS transposition, an intermolecular transposition assay system was constructed using a modified IS4Bsu1 element in B. subtilis 168. Here, the details of the intermolecular transposition assay system are given, and the increase in transposition frequency observed under high-temperature and competence-inducing conditions is described.

  1. Infliximab in patients with psoriasis and other inflammatory diseases: evaluation of adverse events in the treatment of 168 patients*

    Science.gov (United States)

    Antonio, João Roberto; Sanmiguel, Jessica; Cagnon, Giovana Viotto; Augusto, Marília Silveira Faeda; de Godoy, Moacir Fernandes; Pozetti, Eurides Maria Oliveira

    2016-01-01

    Background Psoriasis is immune-mediated chronic inflammatory disease with preference for skin and joints. The skin involvement occurs by hyperproliferation and abnormal differentiation of keratinocytes. It is associated with comorbidities, mainly related to the clinical manifestations of the metabolic syndrome. Increased TNF-alpha expression (TNF-α) is related to its pathophysiology. Infliximab is an intravenous drug that acts neutralizing the biological activity of TNF-α and prevents the binding of the molecule to the target cell receptor, inhibiting cell proliferation of psoriasis and other diseases mediated by TNF-α. A lot of infusion reactions have been described in the literature. Objective To evaluate the adverse effects of intravenous treatment with infliximab, analyzing patients with psoriasis compared to those with other chronic inflammatory diseases (rheumatoid arthritis, ankylosing spondylitis, Crohn's disease and ulcerative colitis). Method Analysis of medical records and adverse events of 168 patients undergoing infliximab infusion for psoriasis and chronic inflammatory diseases treatment. Results 168 patients who have used infliximab were evaluated, 24 had psoriasis and 144 had chronic inflammatory diseases. Only 2 (8.3%) patients with psoriasis showed adverse events requiring treatment discontinuation, and just 6 (4.2%) female patients with chronic inflammatory diseases experienced adverse events. Conclusion Infliximab is a safe drug, with a low percentage of adverse events and there were more adverse events in women with chronic inflammatory diseases and in patients who received more infliximab infusions. PMID:27438197

  2. Exogenous plant MIR168a specifically targets mammalian LDLRAP1: evidence of cross-kingdom regulation by microRNA

    Institute of Scientific and Technical Information of China (English)

    Lin Zhang; Xing Cai; Yuan Yin; Cheng Wang; Tianfu Zhang; Dihan Zhu; Dianmu Zhang; Jie Xu; Qun Chen; Yi Ba; Jing Liu; Dongxia Hou; Qiang Wang; Jianqun Chen; Jin Wang; Meng Wang; Qipeng Zhang; Junfeng Zhang; Ke Zen; Chen-Yu Zhang; Xi Chen; Donghai Li; Lingyun Zhu; Yujing Zhang; Jing Li; Zhen Bian; Xiangying Liang

    2012-01-01

    Our previous studies have demonstrated that stable microRNAs (miRNAs) in mammalian serum and plasma are actively secreted from tissues and cells and can serve as a novel class of biomarkers for diseases,and act as signaling molecules in intercellular communication.Here,we report the surprising finding that exogenous plant miRNAs are present in the sera and tissues of various animals and that these exogenous plant miRNAs are primarily acquired orally,through food intake.MIR168a is abundant in rice and is one of the most highly enriched exogenous plant miRNAs in the sera of Chinese subjects.Functional studies in vitro and in vivo demonstrated that MIR168a could bind to the human/mouse low-density lipoprotein receptor adapter protein 1 (LDLRAP1) mRNA,inhibit LDLRAP1 expression in liver,and consequently decrease LDL removal from mouse plasma.These findings demonstrate that exogenous plant miRNAs in food can regulate the expression of target genes in mammals.

  3. 蛹虫草Cordyceps militaris JN168产虫草素液态发酵条件的优化%Optimization of Fermentation Conditions for Cordycepin by Cordyceps militaris JN168

    Institute of Scientific and Technical Information of China (English)

    岳翠翠; 沈健增; 蔡宇杰; 廖祥儒; 罗军侠; 张大兵

    2013-01-01

    利用单因素筛选和响应面法对蛹虫草Cordyceps militaris JN168产虫草素的液态发酵培养基进行优化,以确定蛹虫草产虫草素的最佳发酵培养基配方.结果表明,蛹虫草产虫草素的最佳碳源为葡萄糖,最适质量浓度为40 g/L;最佳氮源为牛肉膏,最适质量浓度15 g/L;加入的无机盐及其添加量分别为MgSO4 0.76 g/L,K2HPO4 0.63 g/L,CaCl2 0.66 g/L,Na2HPO4 0.67 g/L.优化后发酵液中虫草素质量浓度达到633.47 mg/L,是优化前的6倍.%The components for cordycepin production by Cordyceps militaris JN168 were optimized with single factor experiment and response surface methodology. The purpose of this study is to determine the best fermentation medium for cordycepin production by Cordyceps militaris JN168. Results showed that glucose and beef extract are the appropriate carbon and nitrogen sources with an optimal concentration of 40 g/L and 15 g/L, respectively. And adding inorganic salt is MgSO4, K2HPO4,CaCl2 and Na2HPO4 with an optimal concentration of 0.76 g/L,0.63 g/L,0.66 g/L and 0.67 g/L respectively. The cordycepin concentration in the fermentation broth after optimization is 633.47 mg/L, which is 6 times before the optimization.

  4. 舒适护理在168例小儿水痘护理中的应用体会%Application of comfort nursing in 168 cases of children with chicken pox

    Institute of Scientific and Technical Information of China (English)

    李冲

    2016-01-01

    Objective:To research the application effect of comfort nursing in 168 cases of children with chicken pox.Methods:168 children with chicken pox were selected.They were divided into two groups,each of the 84 cases.Patients in the control group were given routine nursing care .Comfortable nursing group received comfort nursing care.Pyretolysis time,herpes scab,check rash time, varicella pneumonia incidence and clinical curative effect were observed.Results:Comfortable nursing group fever,herpes scab, check rash time was significantly lower than those in control group(P<0.05);the incidence of comfortable nursing group varicella pneumonia was lower than that of the control group(P<0.05);comfortable nursing group total efficiency was higher than that of the control group(P<0.05).Conclusion:The nursing effect of comfortable nursing care in children with chicken pox is remarkable.%目的:研究舒适护理在小儿水痘护理中的应用效果。方法:收治水痘患儿168例,分两组,各84例,对照组行常规护理,舒适护理组行舒适护理。观察两组退热时间、疱疹结痂时间、止疹时间、水痘肺炎发生情况及临床疗效。结果:舒适护理组退热时间、疱疹结痂时间、止疹时间均显著低于对照组(P<0.05);舒适护理组水痘肺炎发生率低于对照组(P<0.05);舒适护理组总有效率高于对照组(P<0.05);结论:舒适护理应用于小儿水痘的护理效果显著。

  5. Dysprosium selective potentiometric membrane sensor

    Energy Technology Data Exchange (ETDEWEB)

    Zamani, Hassan Ali, E-mail: haszamani@yahoo.com [Department of Applied Chemistry, Mashhad Branch, Islamic Azad University, Mashhad (Iran, Islamic Republic of); Faridbod, Farnoush; Ganjali, Mohammad Reza [Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran (Iran, Islamic Republic of)

    2013-03-01

    A novel Dy(III) ion-selective PVC membrane sensor was made using a new synthesized organic compound, 3,4-diamino-N Prime -((pyridin-2-yl)methylene)benzohydrazide (L) as an excellent sensing element. The electrode showed a Nernstian slope of 19.8 {+-} 0.6 mV per decade in a wide concentration range of 1.0 Multiplication-Sign 10{sup -6}-1.0 Multiplication-Sign 10{sup -2} mol L{sup -1}, a detection limit of 5.5 Multiplication-Sign 10{sup -7} mol L{sup -1}, a short conditioning time, a fast response time (< 10 s), and high selectivity towards Dy(III) ion in contrast to other cations. The proposed sensor was successfully used as an indicator electrode in the potentiometric titration of Dy(III) ions with EDTA. The membrane sensor was also applied to the F{sup -} ion indirect determination of some mouth washing solutions and to the Dy{sup 3+} determination in binary mixtures. Highlights: Black-Right-Pointing-Pointer The novelty of this work is based on the high affinity of the ionophore toward the Dy{sup 3+} ions. Black-Right-Pointing-Pointer This technique is very simple, fast and inexpensive and it is not necessary to use sophisticated equipment. Black-Right-Pointing-Pointer The newly developed sensor is superior to the formerly reported Dy{sup 3+} sensors in terms of selectivity.

  6. The magnetocaloric effect in dysprosium

    Science.gov (United States)

    Benford, S. M.

    1979-01-01

    The magnetocaloric effect in polycrystalline Dy was measured in the 84-280-K range in measuring fields from 1 to 7 T. These adiabatic temperature changes reflect structural changes in Dy with applied field and temperature, and include the first magnetocaloric data for a helical antiferromagnet. Above the Neel point (179 K) a field increase always caused heating; below the Neel point fields less than about 2 T cause cooling for some values of initial temperature. The largest temperature increase with a 7 T field occurs at the Neel point and at fields below 2 T near the Curie point. For refrigeration purposes the optimal working region for a Dy cooling element is field dependent.

  7. Impact of UK NICE Clinical Guidelines 168 and social deprivation on access to interventional treatment for symptomatic varicose vein and specialist referral for leg ulceration.

    Science.gov (United States)

    Davies, Huw Ob; Popplewell, Matthew; Bate, Gareth; Kelly, Lisa; Koutsoumpelis, Andreas; Bradbury, Andrew W

    2017-09-01

    Background UK National Institute for Health and Care Excellence (NICE) clinical guidelines (CG) 168, published in July 2013, aimed to improve the management of lower limb venous disease by newly recommending interventional treatment for all people affected by symptomatic varicose veins (VV) and specialist vascular referral for all people suffering from a leg ulcer (LU) that had been present for ≥2 weeks. This study aims to determine if CG168 has increased access to vascular services, particularly for the socially deprived, who might be expected to have greater need for such services. Methods The study was performed in a highly multi-cultural, socio-economically diverse, mixed urban/suburban population of approximately 1.2 million people living in and around East Birmingham, UK. Index of multiple deprivation quintile (IMD-Q) was used as a measure of social deprivation to compare levels of social deprivation of people undergoing interventions for symptomatic VV or referred with an LU during 18-month periods before and after the publication of CG168. The referring general practitioner practices (GPPs) were also recorded. Results There was no change in overall IMD-Q distribution before and after CG168 in terms of VV interventions. However, there was a non-significant increase in proportions of people classified as IMD-Q5 (the most deprived quintile). After CG168, fewer IMD-Q5 people with LU were referred, with a shift in referrals towards those from less socially deprived areas. More GPP referred people with both VV and LU after CG168, and those that referred patients before and after CG168 tended to refer more after CG168. Conclusions CG168 has increased VV interventions as well as the number referred with LU. However, this improvement in access to treatment and referral may have disproportionately favoured the more socio-economic privileged. Professional and public education is required to ensure that the beneficial impact of the CG168 recommendations are maximised

  8. Application of IMF screws to assist internal rigid fixation of jaw fractures: our experiences of 168 cases.

    Science.gov (United States)

    Bai, Zhenxi; Gao, Zhibiao; Xiao, Xia; Zhang, Wenjuan; Fan, Xing; Wang, Zhaoling

    2015-01-01

    Intermaxillary fixation (IMF) screws were first introduced to achieve IMF as a kind of bone borne appliance for jaw fractures in 1989. Because this method can overcome many disadvantages associated with tooth borne appliance, IMF screws have been popularly used for jaw fractures since then. From March 2011 to February 2014, we treated 168 cases with single or multiple jaw fractures by open reduction and a total of 705 IMF screws were intraoperatively applied in all the cases to achieve IMF and maintain dental occlusion as an adjuvant to open reduction. The numbers, implantation sites and complications of IMF screws were retrospectively analyzed. In our experience, we found that IMF screws were important to assist open reduction of jaw fractures but their roles should be objectively assessed and the reliability of open reduction and internal rigid fixation must be emphasized. Much attention should be paid when implanting.

  9. 凉血通瘀中药治疗脑出血急性期168例疗效观察%Liangxue Tongyu Fang for treating acuter-phase cerebral hemorrhage in 168 cases

    Institute of Scientific and Technical Information of China (English)

    过伟峰; 王敬卿; 赵扬; 邵凤扬; 陈隐漪; 顾锡镇; 王永生; 路楷; 张兰坤; 吴勉华; 李国春; 周学平; 叶放; 袁园; 全亚萍; 陈顺中

    2012-01-01

    目的 评价凉血通瘀中药治疗脑出血急性期的临床疗效.方法 将337例患者随机分为治疗组168例和对照组169例,2组均采用西医内科常规治疗,治疗组同时服用凉血通瘀中药,疗程均为21 d.疗程结束后分别统计并比较2组综合疗效、中风病类诊断评分、脑出血吸收情况、脑水肿分级及格拉斯哥预后结果( GOS)评分.结果 治疗组总有效率88.0%,高于对照组的77.5%(P<0.05).2组治疗后中风病类诊断评分及GOS评分均较治疗前显著下降(P<0.01),且治疗组优于对照组(P <0.05或P<0.01).结论 结合凉血通瘀中药治疗脑出血急性期能显著提高临床疗效,改善预后.%Objective To review the curative effect of Liangxue Tongyu Fang on acute-phase cerebral hemorrhage. Methods All patients (n =337) were randomly divided into treatment group (n - 168) and control group (n = 169). The two groups were given routine therapies of Western internal medicine, and treatment group was given Liangxue Tongyu Fang at the same time. A therapeutic course was 21 days. The comprehensive curative effect, diagnostic scores of stroke, absorption of cerebral hemorrhage, haematoma grading and scores of Glasgow outcome score (GOS) were counted and compared in two groups. Results The total effective rate was 88. 0% in treatment group, which was higher than that (77. 5% ) in control group (P <0. 05) . The diagnostic scores of stroke and GOS decreased significantly in two groups after the treatment than before (P <0. 01) , which was more significant in treatment group than that in control group ( P < 0. 05 or P < 0. 01 ). Conclusion Liangxue Tongyu Fang can significantly improve the curative effect and outcomes in the treatment of acute cerebral hemorrhage.

  10. Poly(ADP-ribosyl)ation links the chromatin remodeler SMARCA5/SNF2H to RNF168-dependent DNA damage signaling

    DEFF Research Database (Denmark)

    Smeenk, G.; Wiegant, W.W.; Luijsterburg, M.S.

    2013-01-01

    Ionizing radiation (IR)-induced DNA double-strand breaks (DSBs) arising in native chromatin elicit an RNF8/RNF168-dependent ubiquitylation response, which triggers the recruitment of various repair factors. Precisely how this response is regulated in the context of chromatin remains largely unexp...... to IR and results in DSB repair defects. Our study unveils a functional link between DNA damage-induced poly(ADP-ribosyl)ation, SMARCA5- mediated chromatin remodeling and RNF168-dependent signaling and repair of DSBs. © 2013. Published by The Company of Biologists Ltd....

  11. 老年性上消化道出血168例临床分析

    Institute of Scientific and Technical Information of China (English)

    黄国清

    2011-01-01

    上消化道出血(upper gastrointestinalhemorrage UGH)是指屈氏韧带以上的食管、胃、十二指肠和胃空肠吻合术后的空肠上段和胰、胆等病变引起的出血,是消化内科的急症.而老年人的器官老化,其合并症及并发症较多.死亡率高[1],故有其自身特殊性.本文就我院2009年2月至2011年8月通过胃镜诊断的168例老年性上消化道出血患者(老年组)的病例资料,与同期非老年304例患者(非老年组)进行对比研究,现报告如下.

  12. No drain, autologous transfusion drain or suction drain? A randomised prospective study in total hip replacement surgery of 168 patients.

    Science.gov (United States)

    Cheung, Graham; Carmont, Michael R; Bing, Andrew J F; Kuiper, Jan-Herman; Alcock, Robert J; Graham, Niall M

    2010-10-01

    We performed a prospective, randomised controlled trial to assess the differences in the use of a conventional suction drain, an Autologous Blood Transfusion (ABT) drain and no drain, in 168 patients. There was no significant difference between the drainage from ABT drains ( mean : 345 ml) and the suction drain (314 ml). Forty percent of patients receiving a suction drain had a haemoglobin level less than 10 g/dL at 24 hours, compared to 35% with no drain and 28% with an ABT drain. Patients that had no drains had wounds that were dry significantly sooner, mean 3.0 days compared to a mean of 3.9 days with an ABT drain and a mean of 4 days with a suction drain. Patients that did not have a drain inserted stayed in hospital a significantly shorter period of time, compared with drains. We feel the benefits of quicker drying wounds, shorter hospital stays and the economic savings justify the conclusion that no drain is required after hip replacement.

  13. Yellow fever vaccine: comparison of the neurovirulence of new 17D-204 Stamaril™ seed lots and RK 168-73 strain.

    Science.gov (United States)

    Moulin, Jean-Claude; Silvano, Jérémy; Barban, Véronique; Riou, Patrice; Allain, Caroline

    2013-07-01

    The neurovirulence of two new candidate 17D-204 Stamaril™ working seed lots and that of two reference preparations were compared. The Stamaril™ working seed lots have been used for more than twenty years for the manufacturing of vaccines of acceptable safety and efficacy. The preparation designated RK 168-73 and provided by the Robert Koch Institute was used as a reference. It was confirmed that RK 168-73 strain was not a good virus control in our study because it has a very low neurovirulence regarding both the clinical and histopathological scores in comparison with Stamaril™ strain and is not representative of a vaccine known to be satisfactory in use. The results were reinforced by the phenotypic characterization by plaque assay demonstrating that RK 168-73 was very different from the Stamaril™ vaccine, and by sequencing results showing 4 mutations between Stamaril™ and RK 168-73 viruses leading to amino acid differences in the NS4B and envelop proteins.

  14. Substitutions at NS3 Residue 155, 156, or 168 of Hepatitis C Virus Genotypes 2 to 6 Induce Complex Patterns of Protease Inhibitor Resistance

    DEFF Research Database (Denmark)

    Jensen, Sanne B.; Serre, Stephanie B. N.; Humes, Daryl G.

    2015-01-01

    to nine PIs (telaprevir, boceprevir, simeprevir, asunaprevir, vaniprevir, faldaprevir, paritaprevir, deldeprevir, and grazoprevir) in Huh7.5 cells. We found that most variants showed decreased fitness compared to original viruses. Overall, R155K-, A156G/S-, and D/Q168A/E/H/N/V-variants showed highest...

  15. Nucleosome acidic patch promotes RNF168- and RING1B/BMI1-dependent H2AX and H2A ubiquitination and DNA damage signaling.

    Directory of Open Access Journals (Sweden)

    Justin W Leung

    2014-03-01

    Full Text Available Histone ubiquitinations are critical for the activation of the DNA damage response (DDR. In particular, RNF168 and RING1B/BMI1 function in the DDR by ubiquitinating H2A/H2AX on Lys-13/15 and Lys-118/119, respectively. However, it remains to be defined how the ubiquitin pathway engages chromatin to provide regulation of ubiquitin targeting of specific histone residues. Here we identify the nucleosome acid patch as a critical chromatin mediator of H2A/H2AX ubiquitination (ub. The acidic patch is required for RNF168- and RING1B/BMI1-dependent H2A/H2AXub in vivo. The acidic patch functions within the nucleosome as nucleosomes containing a mutated acidic patch exhibit defective H2A/H2AXub by RNF168 and RING1B/BMI1 in vitro. Furthermore, direct perturbation of the nucleosome acidic patch in vivo by the expression of an engineered acidic patch interacting viral peptide, LANA, results in defective H2AXub and RNF168-dependent DNA damage responses including 53BP1 and BRCA1 recruitment to DNA damage. The acidic patch therefore is a critical nucleosome feature that may serve as a scaffold to integrate multiple ubiquitin signals on chromatin to compose selective ubiquitinations on histones for DNA damage signaling.

  16. The deubiquitylating enzyme USP44 counteracts the DNA double-strand break response mediated by the RNF8 and RNF168 ubiquitin ligases

    DEFF Research Database (Denmark)

    Mosbech, Anna; Lukas, Claudia; Bekker-Jensen, Simon

    2013-01-01

    Protein recruitment to DNA double-strand breaks (DSBs) relies on ubiquitylation of the surrounding chromatin by the RING finger ubiquitin ligases RNF8 and RNF168. Flux through this pathway is opposed by several deubiquitylating enzymes (DUBs), including OTUB1 and USP3. By analyzing the effect...

  17. 西安社区168名儿童饮食行为调查分析%Analysis of diet behavior of 168 children in two communities of Xi'an

    Institute of Scientific and Technical Information of China (English)

    张小棉; 冯德鸿; 张欢; 杨玉凤

    2011-01-01

    [目的]了解西安社区7个月~4岁儿童饮食行为问题情况,为地段儿童不良饮食行为的指导提供依据.[方法]随机抽取西安两个社区7个月~4岁儿童168名,以家长自填问卷的方式进行调查.内容包括:儿童背景资料儿童饮食行为特点、家长的喂养行为及家长对儿童饮食行为问题的应对. [结果]儿童饮食行为问题的检出情况:正常组儿童仅11人(占6.5%),未检出饮食行为问题,检出存在饮食行为问题组儿童157人(占93.4%);男女童之间差异无统计学意义(χ2=0.128,P>0.05);城区儿童与郊区儿童饮食行为问题检出差异无统计学意义(χ2=3.665,P>0.05);总检出问题7项,其中进食时间过长78人,对食物不感兴趣85人,拒绝某种食物38人,不愿尝试新食物56人,强烈偏爱某些食物人81人,进餐分心101人,进餐地点不同定77人,两组差异有高度统计学意义(P<0.01). [结论]应加强对儿童饮食行为问题的高度重视,及对抚养人科学育儿知识的宣教,促进儿童健康成长.%[Objective]To investigate the diet behavior of children aged 7 months~4 years in 2 communities of Xi'an city, and to provide the guidelines in unhealthy diet behavior in territorial children.[Method]Randomly selected 168 children aged 7 months~4 years in 2 communities of Xi'an city, to investigate via parents-filled at questionnaire, including children personal background, characteristics of diet behavior in children, feeding-up behavior in parents and management of children diet behavior.[Results]Situation of children diet behavior: 11 children(6.5%) in normal group showed none of diet misbehavior; 157 children(93.4%) existed diet misbehavior; none of significant difference between gender or between urban and outskirts children could be found.7 total detection problem, 78 children eating time too long, 85 children were not interested in food, 38 children refused to certain food, 56 children did not want to trying new

  18. Monitoring of the 16.8 kW{sub p} PV-plant with CIS modules in St. Moritz; Monitoring of the 16.8 kW{sub p} PV-plant with CIS modules in St. Moritz

    Energy Technology Data Exchange (ETDEWEB)

    Cereghetti, N.

    2004-07-01

    This final report for the Swiss Federal Office of Energy (SFOE) presents the results of an analysis of the performance of the grid-connected, 16.8 kW{sub p} CIS (Copper Indium Diselenide) photovoltaic (PV) plant installed on the roof of the Ludains ice rink in St. Moritz, Switzerland that operates under extreme environmental conditions. The grid-connected installation, currently the largest in Europe using CIS modules, consists of 7 sub-arrays, each comprising 6 strings of 10 modules in series. Within this project, the behaviour (at high altitude) of such technology has been analysed. The measuring equipment for detailed monitoring, installed at the plant on the 27{sup th} July 2001, is described. It allows the collection of local climatic data (solar irradiance at two different points on the plant as well as ambient temperature) and the measurement of all string currents as well as DC voltages and the AC power of each sub-array. Also, the temperature at the back of 3 plant modules is monitored. In addition to the thermographic analysis of the plant, on-site measurements of the current-voltage characteristics of the 42 strings were carried out twice. Extrapolation to standard temperature conditions (STC) reveals that the average nominal power of the plant modules - after initial degradation - is around 40 W{sub p}, i.e. as declared by the manufacturer. An analysis of plant production ratio (PR) values shows a very stable, high efficiency (PR = 0.81), and that the CIS modules exhibit a similar behaviour to ones in crystalline silicon. Lower production of certain strings is shown to be due to partial shadowing from buildings nearby.

  19. Malignant transformation of a rat fibroma by the treatment with an anti-fibrosing drug: CY-168F (Plastenan

    Directory of Open Access Journals (Sweden)

    Sonia G. Andrade

    1981-09-01

    Full Text Available Fifteen albino (Sprague Dawley rats with subcutaneous transplanted fibromas was used in the present study. The tumour was formed by typical fibroblasts in a dense collagen matrix and was provenient from a fibroma that appeared spontaneously in an albino rat of the same strain. Ultrastructurally collagen disclosed normal periodicity and the fibroblasts showed irregular notched nuclei with irregular distribution of chromatin, that suggests transitional aspects to fibrosarcoma. The 15 animals, from different passage groups, were divided into: 8 animals submitted to treatment with the drug acexamic acid (CY-168F - N acetyl-amino-6-hexanoic acid (plastenan and 7 untreated control animals. Three of the treated animals showed a malignant transformation to fibrosarcoma. transitional histological features from typical fibroma to highly indifferentiated fibrosarcoma could be detected in come animal subjected to repeated biopsies. Ultrastructural study disclosed nuclear alterations and hyperactive ergastoplasm and collagen containing inclusions into the cytoplasm of fibroblasts. In the group of 7 untreated naimals, no malignant transformation could be detected histologically. Two aspects deserve attention: the malignant potential of a typical fibroma and the apparent effect of an antifibrosing drug in inducing malignization of this tumour.Foram utilizados no presente estudo, quinze ratos albinos (Sprague Dawley portadores de fibronas transplantados no tecido subcutâneo da parede abdominal. O tumor era constituído por fibroblastos típicos, em uma densa matriz colagênica e eram provenientes de um fibroma que apareceu espontaneamente em um rato albino da mesma linhagem. Ultraestruturalmente o colágeno mostrava periodicidade normal e os fibroblastos mostravam núcleo irregularmente denteado, com cromatina irregularmente distribuída, sugerindo aspectos transicionais para um fibrossarcoma. Os quinze animais, de diferentes grupos de passagem do tumor, foram

  20. Lead Sorption from Aqueous Solutions by Pseudomonas putida (p168 and its Composites with Palygorskite and Sepiolite Clays

    Directory of Open Access Journals (Sweden)

    Marzieh tavanaei

    2017-02-01

    Full Text Available Introduction: Heavy metals contamination due to natural and anthropogenic sources is a global environmental concern. Lead (Pb is one of the very toxic heavy metals. Industrial production processes and their emissions, mining operation, smelting, combustion sources and solid waste incinerators are the primary sources of lead. This heavy metal has aberrant effects on the environment and living organisms. Hence, proper treatment of lead from soil and industrial wastewaters is very important. In order to remove toxic heavy metals from contaminated water systems, conventional methods such as chemical precipitation, coagulation, ion exchange, solvent extraction and filtration, evaporation and membrane methods are being used. These conventional methods generally have high costs and technical problems. Therefore, biosorption processes, in which microorganisms are used as sorbents, have been considered as economical and environmentally friendly options for removal of heavy metals from aqueous solution. Clay minerals are another group of sorbents used in removal of heavy metals from polluted environments. Furthermore, bacterial cells can be attached on clay mineral surfaces and form bacteria-mineral composites. These composites adsorb heavy metals and convert them into forms with low mobility and bioavailability. Pseudomonas putida is a unique microorganism with a high tendency to sorb and/or degrade certain environmental pollutants. Palygorskite and sepiolite are the fibrous clay minerals of arid and semiarid regions; their structures consist of ribbons and channels. These fibrous minerals have various applications in industry and the environment because of its large surface area and high adsorption capacity. The present study was conducted in order to determine the ability of Pseudomonas putida (P168, and its composites with palygorskite and sepiolite in lead sorption. Materials and Methods: The bacterial strain used in the present study was Pseudomonas

  1. Microstructure and dielectric properties of dysprosium-doped barium titanate ceramics Microestrutura e propriedades dielétricas de cerâmicas de titanato de bário dopado com disprósio

    Directory of Open Access Journals (Sweden)

    Y. Pu

    2005-09-01

    Full Text Available The substitution behavior and lattice parameter of barium titanate between solid_solubility with a dopant concentration in the range of 0.25 to 1.5 mol% are studied. The influences of dysprosium-doped fraction on the grain size and dielectric properties of barium titanate ceramic, including dielectric constant and breakdown electric field strength, are investigated via scanning electronic microscopy, X-ray diffraction and electric property tester. The results show that, at a dysprosium concentration of 0.75 mol%, the abnormal grain growth is inhibited and the lattice parameters of grain rise up to the maximum because of the lowest vacancy concentration. In addition, the finegrain and high density of barium titanate ceramic result in its excellent dielectric properties. The relative dielectric constant (25 °C reaches to 4100. The temperature coefficient of the capacitance varies from -10 to 10% within the temperature range of -15 °C -100 °C, and the breakdown electric field strength (alternating current achieves 3.2 kV/mm. These data suggest that our barium titanate could be used in the manufacture of high voltage ceramic capacitors.Foram estudados o comportamento da substituição e o parâmetro de rede de titanato de bário da solubilidade sólida com uma concentração de dopante na faixa 0,25-1,5 mol%. As influências da fração do dopante disprósio no tamanho de grão e nas propriedades dielétricas da cerâmica de titanato de bário, incluindo constante dielétrica e rigidez dielétrica foram investigadas por meio de microscopia eletrônica de varredura, difração de raios X e teste de propriedades elétricas. Os resultados mostram que a uma concentração de disprósio de 0,75 mol% o crescimento anormal de grão é inibido e os parâmetros de rede aumentam até um máximo devido a menor concentração de vacâncias. Além disso, as cerâmicas de grãos pequenos e alta densidade resultam em excelentes propriedades dielétricas. A

  2. Neodymium Dysprosium Modified Starch- coated Magnetic Fluid Preparation of Ferrite%淀粉包覆镝钕改性铁氧体磁性液体的制备

    Institute of Scientific and Technical Information of China (English)

    林穗云; 周育辉

    2011-01-01

    In this paper, in order to obtain the ferrite magnetic fluids of higher saturation magnetic intensity with simple technology, nanometer magnetite ( Fe3O4 ) particles ware prepared by chemical co - precipitation. And to a certain proportion of Dysprosium Neodymium ferrite magnetic fluids on the modification, we selected starch prepara- tion for the relief of water - based coating of rare earth iron oxide magnetic fluid composites. We also investigated the amount of Nd - Dy, the amount of coating agent, reaction temperature, coating temperature on the performance of the products and the effects of particle size, and its preliminary characterization was also performed . Through experiment,we summed up, under n (Fe) : [ n ( Nd3+ ) + n ( Dy3+ ) ] = 30:1 and n ( Fe3 + ) : n ( Fe2 + ) = 1.70 ~ 1. 75, the ratio for use of dysprosium and neodymium is n(Dy3+ ) : n(Nd3+ ) =4:1, 25%NH3 · H2O(A. R. ) as precipitating agent and pH value conditioner; the reacting system temperature was controlled in 35 ℃, and the pH value was adjusted to 9 ~ 11 ; the best dosage of starch as the relief is O. 0050g each 6OraL magnetic fluids, the temperature of surfactant was controlled in 50℃ and the pH value was adjusted to 2 ~ 3. In such system under the conditions of a water - based rare - earth compound Nd Dy Fe Magnetic, fluid magnetic oxygen was higher than or- dinary water- based ferrite.%为制备工艺简单且饱和磁化强度高的磁流体,本文采用化学共沉淀法制得了纳米磁性Fe304粒子.然后以一定比例的镝钕对铁氧体磁流体改性,选择淀粉为包覆剂制备水基稀土复合铁氧磁流体.考察了镝钕的用量、包覆剂的用量、反应温度、包覆温度等因素对产物粒径及性能的影响,并对其进行了初步的性能表征.实验总结出适宜的条件:在n(Fe):[n(Nd3+)+n(Dy3+)]=30:1,n(Fe3+):n(Fe2+)=1.70~1.75

  3. Impact of PNPLA3 variants on liver histology of 168 patients with HIV infection and chronic hepatitis C.

    Science.gov (United States)

    Sagnelli, C; Merli, M; Uberti-Foppa, C; Hasson, H; Cirillo, G; Grandone, A; Salpietro, S; Minichini, C; Del Giudice, E M; Lazzarin, A; Sagnelli, E; Coppola, N

    2016-04-01

    This study analysed the impact of PNPLA3 variants on liver histology of 168 HIV/hepatitis C virus (HCV)-coinfected patients who were naïve for HCV treatment. A athologist unaware of the patients' condition graded liver fibrosis and necroinflammation (Ishak) and steatosis (Kleiner). Patients were tested for PNPLA3 variants and genotyped for the PNPLA3 rs738409 C to G variant underlying the I148M substitution. All were hepatitis B surface antigen negative and stated no alcohol abuse. The mean age was 40.6 (37.6-44.1) years, 72.6% were males, 42% had HCV genotype 3, 38.9% HCV genotype 1 and 79.2% were receiving highly active antiretroviral therapy. The 79 patients with the PNPLA3 p.148I/M or M/M variants more frequently showed severe steatosis (score 3-4) than the 89 with PNPLA3 p.148I/I (43% vs. 24.7%, p 0.001), whereas no difference was observed in the degree of necroinflammation or fibrosis. Compared with 112 patients with lower scores, 56 with severe steatosis showed higher body mass index (p 0.03), higher rate of HCV genotype 3 (55.6% vs. 35.2%, p 0.01), PNPLA3 p.148I/M or M/M (60.7% vs. 39.3%, p 0.01) and lower CD4(+) cells/mm(3) (514.00 (390.5-673.0) vs. 500.00 (399.0-627.0); p 0.002). At multivariate analysis, body mass index (p 0.01), HCV genotype 3 (p 0.006), CD4(+) cell count (p 0.005) and PNPLA3 p.148I/M or M/M variants (p 0.01) were found to be independent predictors of severe liver steatosis. The PNPLA3 p.148 I/M or M/M variants and CD4(+) cell count were the only independent predictors of severe steatosis in patients with HCV non-3 genotypes. This is the first study to show that among HIV/HCV-coinfected patients the PNPLA3 p.148I/M or M/M variant have substantially less impact on steatosis for those with HCV genotype 3 than non-genotype 3.

  4. Insulin pump therapy, multiple daily injections, and cardiovascular mortality in 18,168 people with type 1 diabetes: observational study.

    Science.gov (United States)

    Steineck, Isabelle; Cederholm, Jan; Eliasson, Björn; Rawshani, Araz; Eeg-Olofsson, Katarina; Svensson, Ann-Marie; Zethelius, Björn; Avdic, Tarik; Landin-Olsson, Mona; Jendle, Johan; Gudbjörnsdóttir, Soffia

    2015-06-22

    To investigate the long term effects of continuous subcutaneous insulin infusion (insulin pump therapy) on cardiovascular diseases and mortality in people with type 1 diabetes. Observational study. Swedish National Diabetes Register, Sweden 2005-12. 18,168 people with type 1 diabetes, 2441 using insulin pump therapy and 15,727 using multiple daily insulin injections. Cox regression analysis was used to estimate hazard ratios for the outcomes, with stratification of propensity scores including clinical characteristics, risk factors for cardiovascular disease, treatments, and previous diseases. Follow-up was for a mean of 6.8 years until December 2012, with 114,135 person years. With multiple daily injections as reference, the adjusted hazard ratios for insulin pump treatment were significantly lower: 0.55 (95% confidence interval 0.36 to 0.83) for fatal coronary heart disease, 0.58 (0.40 to 0.85) for fatal cardiovascular disease (coronary heart disease or stroke), and 0.73 (0.58 to 0.92) for all cause mortality. Hazard ratios were lower, but not significantly so, for fatal or non-fatal coronary heart disease and fatal or non-fatal cardiovascular disease. Unadjusted absolute differences were 3.0 events of fatal coronary heart disease per 1000 person years; corresponding figures were 3.3 for fatal cardiovascular disease and 5.7 for all cause mortality. When lower body mass index and previous cardiovascular diseases were excluded, results of subgroup analyses were similar to the results from complete data. A sensitivity analysis of unmeasured confounders in all individuals showed that an unmeasured confounders with hazard ratio of 1.3 would have to be present in >80% of the individuals treated with multiple daily injections versus not presence in those treated with pump therapy to invalidate the significantly lower hazard ratios for fatal cardiovascular disease. Data on patient education and frequency of blood glucose monitoring were missing, which might have

  5. Insulin pump therapy, multiple daily injections, and cardiovascular mortality in 18 168 people with type 1 diabetes: observational study

    Science.gov (United States)

    Cederholm, Jan; Eliasson, Björn; Rawshani, Araz; Eeg-Olofsson, Katarina; Svensson, Ann-Marie; Zethelius, Björn; Avdic, Tarik; Landin-Olsson, Mona; Jendle, Johan; Gudbjörnsdóttir, Soffia

    2015-01-01

    Objective To investigate the long term effects of continuous subcutaneous insulin infusion (insulin pump therapy) on cardiovascular diseases and mortality in people with type 1 diabetes. Design Observational study. Setting Swedish National Diabetes Register, Sweden 2005-12. Participants 18 168 people with type 1 diabetes, 2441 using insulin pump therapy and 15 727 using multiple daily insulin injections. Main outcome measures Cox regression analysis was used to estimate hazard ratios for the outcomes, with stratification of propensity scores including clinical characteristics, risk factors for cardiovascular disease, treatments, and previous diseases. Results Follow-up was for a mean of 6.8 years until December 2012, with 114 135 person years. With multiple daily injections as reference, the adjusted hazard ratios for insulin pump treatment were significantly lower: 0.55 (95% confidence interval 0.36 to 0.83) for fatal coronary heart disease, 0.58 (0.40 to 0.85) for fatal cardiovascular disease (coronary heart disease or stroke), and 0.73 (0.58 to 0.92) for all cause mortality. Hazard ratios were lower, but not significantly so, for fatal or non-fatal coronary heart disease and fatal or non-fatal cardiovascular disease. Unadjusted absolute differences were 3.0 events of fatal coronary heart disease per 1000 person years; corresponding figures were 3.3 for fatal cardiovascular disease and 5.7 for all cause mortality. When lower body mass index and previous cardiovascular diseases were excluded, results of subgroup analyses were similar to the results from complete data. A sensitivity analysis of unmeasured confounders in all individuals showed that an unmeasured confounders with hazard ratio of 1.3 would have to be present in >80% of the individuals treated with multiple daily injections versus not presence in those treated with pump therapy to invalidate the significantly lower hazard ratios for fatal cardiovascular disease. Data on patient education and

  6. 丹鹿通督片联合来氟米特治疗强直性脊柱炎168例疗效观察

    Institute of Scientific and Technical Information of China (English)

    杜正福; 赵红霞

    2009-01-01

    @@ 2005年7月至2009年7月我们采用丹鹿通督片联合免疫抑制剂来氟米特(Leflunomide)治疗强直性脊柱炎(ankylosing spondylitis, AS)患者168例,现报道如下. 1 资料与方法 1.1 一般资料 168例AS患者系风湿免疫专科门诊及住院患者,均符合1984年纽约诊断标准[1],根据AS的常用活动指标判定均为活动期[2].

  7. α(+)-Thalassemia Due to a Frameshift Mutation of the α2-Globin Gene [codons 55/56 (+T) or HBA2: c.168dup].

    Science.gov (United States)

    Waye, John S; Eng, Barry; Hanna, Meredith; Hohenadel, Betty-Ann; Nakamura, Lisa M; Walker, Lynda

    2015-01-01

    We report a case of α(+)-thalassemia (α(+)-thal) trait in a Chinese-Canadian family caused by a novel frameshift mutation of the α2-globin gene, specifically the duplication of a single nucleotide at amino acid codon 56 [HBA2: c.168dup]. The mutation results in substitution of a termination codon (TAA) for lysine (AAG) at amino acid position 56.

  8. Physico-chemical stability of butorphanol-tramadol and butorphanol-fentanyl patient-controlled analgesia infusion solutions over 168 hours.

    Science.gov (United States)

    Chen, Fuchao; Fang, Baoxia; Li, Peng; Zhu, Xuesong; Zhou, Benhong

    2014-08-01

    This study was to investigate the physical and chemical compatibility of butorphanol with tramadol or fentanyl in 0.9% sodium chloride injections for patient controlled analgesia administration. The solutions were prepared in polyvinyl chloride (PVC) infusion bags and stored without protected from light exposure at room temperature (25 degrees C) or refrigerated (4 degrees C). Over a period of 168 hours, stabilities were determined by visual inspection, pH measurement, and high-pressure liquid chromatography (HPLC) assay of drug concentrations. At both temperatures, admixtures of butorphanol-tramadol and butorphanol-fentanyl were clear in appearance, and no color change or precipitation was observed during the study period. The maximum losses obtained were lower than 5% for the three drugs after 168 hours of storage. The results indicate that, at ambient or refrigerated storage conditions, the drug mixtures of butorphanol-tramadol and butorphanol-fentanyl in 0.9% sodium chloride injections were physically and chemically stable for at least 168 hours when stored in PVC syringes.

  9. 表面修饰对镝铁氧体纳米磁粒子的合成及其磁性能的影响%Effect of Surface Modification on Formation and Magnetic Property of Dysprosium Ferrite Nanomagnetic Particles

    Institute of Scientific and Technical Information of China (English)

    陈静; 张茂润; 邓真娟

    2011-01-01

    利用湿化学法制备镝铁氧体纳米磁粒子时,用适量的阴离子表面活性剂进行表面修饰,能够有效地控制磁粒子的粒径,同时避免干燥时产生硬团聚.文章介绍了用月桂酸、月桂酸钠、正十二烷基硫酸钠对磁粒子进行表面修饰的研究结果,探讨了三者及其用量对磁粒子的形成及磁性能的影响.借助X射线衍射仪(XRD)、透射电镜(TEM)、振动样品磁强计(VSM)、红外光谱仪(IR)对产物的性能进行了表征.结果表明,用月桂酸修饰后的产物具有Fe3O4磁粒子的晶型结构且结晶度高、磁性能优异、平均粒径约16nm;用月桂酸钠、正十二烷基硫酸钠修饰后的产物不具有Fe3O4磁粒子的晶型结构,结晶度低且磁性能差.%When wet chemical method are use to prepare dysprosium-doped ferrite magnetic nanoparticles, right a-mount of anionic surfactant were doped as surface modification, which can effectively control the size of magnetic particles, and avoid producing hard reunion when dry out. This paper introduces the research results of magnetic particle surface modification by using lauric acid, laurel acid sodium and lauryl sodium sulfate, discusses the effect of lauric acid, laurel acid sodium and lauryl sodium sulfate and their dosages on the formation of magnetic and its magnetic property. The properties of the product can be characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), infrared spectrometer (IR). The results showed that the product modified with lauric acid have a crystalline structure of Fe3O4 magnetic particles and high crystallin-ity, excellent magnetic properties. The average particle size is about 16 nm; the product modified with laurel acid sodium and lauryl sodium sulfate does not have the crystalline structure of Fe3O4 magnetic particles, with low crystal-linity and low magnetic property.

  10. Clinical Pathological Features of 1 168 Cases of Nodular Goiter%结节性甲状腺肿1168例临床病理分析

    Institute of Scientific and Technical Information of China (English)

    赵时梅; 罗宇; 史琳

    2013-01-01

    目的 探讨结节性甲状腺肿的临床病理特征.方法 回顾性分析1 168例结节性甲状腺肿的临床病理资料.结果 1 168例结节性甲状腺肿中,女性患者占88.1%,中位发病年龄为48岁.结节性甲状腺肿伴发或继发病变发生率高达57.6%,其中出血、坏死、钙化、囊性变,灶性淋巴细胞增生及桥本甲状腺炎发生率分别为20.4%、28.0%和0.3%.乳头状增生发生率为5.3%,甲状腺癌继发率为3.1%.结论 结节性甲状腺肿女性多发,继发病变多,诊断时应给予重视.%Objective To explore the clinical pathological features of nodular goiter. Methods The data of 1 168 nodular goiter were studied retrospectively. Results In all the 1168 cases,female patients occupied 88. 1% ,medianage was 48. Nodular goiter with the secondary cases was 57. 6% . Hemorrhage, necrosis, calcify, cystis degeneration; focal lymphoid hyperplasia; and hashimotos thyroiditis incidence in NG was 20. 4% ,28. 0% and 0. 3% ,respectively. The papillary hyperplasia was found in 5. 3% and the thyroid carcinoma was 3.1%. Conclusion Nodular goiter is more common in female than in male. The secondary cases are often found in nodular goiter and it should be given more attention.

  11. High resolution study of 0{sup +} and 2{sup +} excitations in {sup 168}Er and {sup 130}Ba with the (p,t) reaction

    Energy Technology Data Exchange (ETDEWEB)

    Wirth, Hans-Friedrich; Faestermann, Thomas; Kruecken, Reiner; Mahgoub, Mahmoud [Physik-Department, Technische Universitaet Muenchen, Garching (Germany); Bucurescu, Dorel; Suliman, Gabriel [Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest (Romania); Hertenberger, Ralf; Graw, Gerhard [Department fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, Garching (Germany); Jolie, Jan; Brentano, Peter von; Braun, Norbert; Heinze, Stefan; Moeller, Oliver; Muecher, Dennis; Scholl, Clemens [Institut fuer Kernphysik, Universitaet zu Koeln (Germany); Casten, Richard; Meyer, Deseree [Wright Nuclear Structure Laboratory, Yale University, New Haven (United States); Lo Iudice, Nicola [Dipartimento di Scienze Fisiche, Universita di Napoli (Italy); Chauvin, Nicolas [CSNSM, Institut de Physique Nucleaire, Orsay (France)

    2008-07-01

    Excited states in the deformed nucleus {sup 168}Er have been studied with high energy resolution, in the (p,t) reaction, with the Munich Q3D spectrograph. A number of 25 excited 0{sup +} states and 63 2{sup +} states have been assigned up to 4.0 MeV excitation energy. This unusually rich information offers a unique opportunity to check in detail nuclear structure models. The experimental data are compared with the quasiparticle phonon model (QPM) and the projected shell model (PSM). Latest results for {sup 130}Ba from a (p,t) measurement are also discussed.

  12. Novel Combined Immune Deficiency and Radiation Sensitivity Blended Phenotype in an Adult with Biallelic Variations in ZAP70 and RNF168

    Science.gov (United States)

    Chinn, Ivan K.; Sanders, Robert P.; Stray-Pedersen, Asbjørg; Coban-Akdemir, Zeynep H.; Kim, Vy Hong-Diep; Dadi, Harjit; Roifman, Chaim M.; Quigg, Troy; Lupski, James R.; Orange, Jordan S.; Hanson, I. Celine

    2017-01-01

    With the advent of high-throughput genomic sequencing techniques, novel genetic etiologies are being uncovered for previously unexplained Mendelian phenotypes, and the underlying genetic architecture of disease is being unraveled. Although most of these “mendelizing” disease traits represent phenotypes caused by single-gene defects, a percentage of patients have blended phenotypes caused by pathogenic variants in multiple genes. We describe an adult patient with susceptibility to bacterial, herpesviral, and fungal infections. Immunologic defects included CD8+ T cell lymphopenia, decreased T cell proliferative responses to mitogens, hypogammaglobulinemia, and radiation sensitivity. Whole-exome sequencing revealed compound heterozygous variants in ZAP70. Biallelic mutations in ZAP70 are known to produce a spectrum of immune deficiency that includes the T cell abnormalities observed in this patient. Analyses for variants in genes associated with radiation sensitivity identified the presence of a homozygous RNF168 variant of unknown significance. RNF168 deficiency causes radiosensitivity, immunodeficiency, dysmorphic features, and learning difficulties syndrome and may account for the radiation sensitivity. Thus, the patient was found to have a novel blended phenotype associated with multilocus genomic variation: i.e., separate and distinct genetic defects. These findings further illustrate the clinical utility of applying genomic testing in patients with primary immunodeficiency diseases. PMID:28603521

  13. 打造中国特色的“汽车旅馆”——莫泰168崛起沪上揭秘

    Institute of Scientific and Technical Information of China (English)

    刘耿大

    2005-01-01

    2004年,由美林阁餐饮集团及大众交通投资的Motell68(莫泰连锁旅店),以8家连锁店的规模,雨后舂笋般在上海经济型酒店市场异军突起,成为一支与锦江之星、如家连琐酒店鼎足而立的经济型酒店劲旅。作为三家中唯一引进国外汽车旅馆(Motel)概念的经济型连锁酒店,莫泰168却又是有着自己特色的中国式“汽车旅馆”。

  14. Comparative study of MLT mean winds using MF radars located at 16.8° N and 8.7°N

    Indian Academy of Sciences (India)

    A K Sharma; M V Rokade; R Kondala Rao; S Gurubaran; P T Patil

    2010-08-01

    The main aim of the paper is to describe mesosphere and lower thermosphere (MLT) wind field observed between June 2000 and May 2002 by medium frequency (MF) radars at two locations near the equatorial region and at tropical latitude. We have presented and compared observations of mean horizontal winds in the mesosphere and lower thermosphere (MLT) region over Kolhapur (16.8°N, 74.2°E) and Tirunelveli (8.7°N, 77.8°E). Our analysis reveals annual oscillation in the zonal wind and semi-annual oscillation in the meridional wind over Kolhapur. On the other hand, results over Tirunelveli reveal semi-annual oscillation (SAO) in the zonal wind and annual oscillation in the meridional wind. Also we have observed enhanced magnitude of wind speed in spring equinox period of 2002 exhibiting the signatures of the quasi-biennial oscillation (QBO) over Tirunelveli.

  15. Development of a new "GFP hop-on assay" system for insertion sequence transposition in Bacillus subtilis 168 using IS4Bsu1 from B. subtilis (natto).

    Science.gov (United States)

    Takahashi, Kiwamu; Chibazakura, Taku; Sekine, Yasuhiko; Yoshikawa, Hirofumi

    2007-04-06

    While most studies involving transposition have focused on analyzing the detailed mechanisms of transposition, the cellular conditions under which transposition occurs remain to be elucidated. In Escherichia coli, papillation assay is a powerful tool for transpositional analysis and the isolation of mutants affecting transposition. On the other hand, while our assay system based on the E. coli papillation assay can detect transpositional events in Bacillus subtilis 168, it is not suitable for quantitating transposition frequency because blue papillae on the transposant colonies of B. subtilis are not countable. We succeeded in developing a new "GFP hop-on assay" system that facilitates quantitative detection of the transposition of the FACS-optimized GFP mutant gene. Our assay system is a step forward in understanding the cellular conditions under which transposition occurs.

  16. Oscillations in the open solar magnetic flux with a period of 1.68 years: imprint on galactic cosmic rays and implications for heliospheric shielding

    Directory of Open Access Journals (Sweden)

    A. Rouillard

    2004-12-01

    Full Text Available An understanding of how the heliosphere modulates galactic cosmic ray (GCR fluxes and spectra is important, not only for studies of their origin, acceleration and propagation in our galaxy, but also for predicting their effects (on technology and on the Earth's environment and organisms and for interpreting abundances of cosmogenic isotopes in meteorites and terrestrial reservoirs. In contrast to the early interplanetary measurements, there is growing evidence for a dominant role in GCR shielding of the total open magnetic flux, which emerges from the solar atmosphere and enters the heliosphere. In this paper, we relate a strong 1.68-year oscillation in GCR fluxes to a corresponding oscillation in the open solar magnetic flux and infer cosmic-ray propagation paths confirming the predictions of theories in which drift is important in modulating the cosmic ray flux.

    Key words. Interplanetary physics (Cosmic rays, Interplanetary magnetic fields

  17. 老年痴呆症168例辨证治疗探讨%Clinical study of dialectical treatment of alzheimer' s disease

    Institute of Scientific and Technical Information of China (English)

    宋慧敏

    2011-01-01

    目的 探讨辩证治疗老年痴呆症临床疗效.方法 2008年1月-2009年10月诊治的老年痴呆症患者168例,随机分为辩证治疗组88例,常规治疗组80例,观察两组治疗前与治疗后进行认知功能、行为能力评价.结果 两组治疗前后认知功能、行为能力变化比较P<0.05,差异有统计学意义.结论 治疗老年痴呆症能够运用中医药进行辩证治疗,充分发挥中医整体观念,灵活运用辩证论治,能够取得良好的临床效果,减缓和改善老年痴呆症临床症状.%Objective To explore the dialectical treatment of Alzheimer's disease therapy. Methods January 2008-2009 years October dementia diagnosis and treatment of 168 patients were randomly divided into treatment group 88 cases of dialectic, the conventional treatment group 80 cases,both were observed before treatment and after treatment on cognitive function, behavior evaluation. Resuits Both before and after treatment of cognitive function, ability to change behavior comparison P < 0. 05 significant difference. Conclusions The treatment of Alzheimer's disease traditional Chinese medicine to use dialectical treatment, give full play to the whole concept of Chinese medicine, on the flexible use of dialectical treatment, to obtain good clinical effects, mitigation and improvement of clinical symptoms of dementia.

  18. Nitrogen isotopic composition of organic matter from a 168 year-old coral skeleton: Implications for coastal nutrient cycling in the Great Barrier Reef Lagoon

    Science.gov (United States)

    Erler, Dirk V.; Wang, Xingchen T.; Sigman, Daniel M.; Scheffers, Sander R.; Martínez-García, Alfredo; Haug, Gerald H.

    2016-01-01

    Ongoing human activities are known to affect nitrogen cycling on coral reefs, but the full history of anthropogenic impact is unclear due to a lack of continuous records. We have used the nitrogen isotopic composition of skeleton-bound organic matter (CS-δ15N) in a coastal Porites coral from Magnetic Island in the Great Barrier Reef as a proxy for N cycle changes over a 168 yr period (1820-1987 AD). The Magnetic Island inshore reef environment is considered to be relatively degraded by terrestrial runoff; given prior CS-δ15N studies from other regions, there was an expectation of both secular change and oscillations in CS-δ15N since European settlement of the mainland in the mid 1800s. Surprisingly, CS-δ15N varied by less than 1.5‰ despite significant land use change on the adjacent mainland over the 168-yr measurement period. After 1930, CS-δ15N may have responded to changes in local river runoff, but the effect was weak. We propose that natural buffering against riverine nitrogen load in this region between 1820 and 1987 is responsible for the observed stability in CS-δ15N. In addition to coral derived skeletal δ15N, we also report, for the first time, δ15N measurements of non-coral derived organic N occluded within the coral skeleton, which appear to record significant changes in the nature of terrestrial N inputs. In the context of previous CS-δ15N records, most of which yield CS-δ15N changes of at least 5‰, the Magnetic Island coral suggests that the inherent down-core variability of the CS-δ15N proxy is less than 2‰ for Porites.

  19. Genetic Association Study of Angiotensin II Receptor Types 1 (A168G) and 2 (T1247G and A5235G) Polymorphisms in Breast Carcinoma among Brazilian Women

    Science.gov (United States)

    Molina Wolgien, Maria del Carmen Garcia; Guerreiro da Silva, Ismael Dale Cotrim; Pinto Nazário, Afonso Celso; Nakaie, Clovis Riuche; Correa-Noronha, Silvana Aparecida Alves; Ribeiro de Noronha, Samuel Marcos; Facina, Gil

    2014-01-01

    Summary Background Many types of cancer are associated with polymorphisms of the renin-angiotensin system. Our aim was to assess possible association between single-nucleotide polymorphisms (SNPs) of the angiotensin II receptor types 1 (A168G), and 2 (T1247G and A5235G) with breast cancer. Patients and Methods 242 participating subjects were genotyped and allocated to case or control groups. Results Genotype distribution (in %) was: for AGTR1 (A168G): AA, AG, GG = 61, 30, 09 for cases, and 69, 25, 06 for controls (p = 0.55); for AGTR2 (T1247G): TT, TG, GG = 84, 12, 04 for cases, and 81, 17, 02 for controls (p = 0.45); for AGTR2 (A5235G): AA, AG, GG = 32, 67, 01 for cases, and 53, 28, 19 for controls (p < 0.0001). Women carrying genotypes AA/AG in the intronic region of angiotensin II type 2 receptor had an 11-fold higher risk of breast cancer than GG carriers. Conclusions Many types of cancer have been associated with polymorphisms of the renin-angiotensin system. For SNP A5235G, the GG genotype seems to be protective against breast cancer. The other 2 SNPs showed no association. However, SNPs T1247G and A5235G were associated with at least 1 clinical variable, with G being a predictor of better outcome. The use of SNPs A5235G and T1247G (the latter to a lesser degree) as genetic markers should be considered. PMID:25177259

  20. ø219.1/168.3 mm 气举反循环双壁钻具及其在大直径工程井中的应用%ø219.1/168.3 mm Air-lift RC Dual Wall Drilling Tools and Their Use in Large Diameter Drilling

    Institute of Scientific and Technical Information of China (English)

    熊亮; 袁志坚; 白领国; 彭桂湘; 耿建国

    2013-01-01

    Considering the shortcomings such as low efficiency, long construction period, high risk etc.of the commonly used large diameter drilling process which consists of direct circulation drilling and stepped reaming, a219.1/168.3 mm dual-wall, and168.3 mm internal flush drill pipes have been developed with the complete accessories, and successfully used to drilling a 1200 mm diameter , 651.2 m deep gas drainage well.The drilling tool is large in size, has high strength, and is connected with special threads.Field use indicates that the drilling tool has high tensile and torsional strength with good sealing.Compared with conventional drilling processes, the air-lift reverse circulation technique provides good cutting-carrying capacity, and increases the rate of penetrate by 74.3% with the quality borehole.In addition, drilling risk is greatly reduced owing to cleanliness of the borehole.%针对当前国内普遍采用“正循环回转钻进+分级扩孔”方法施工大直径工程井效率低、周期长、工程风险大等不足,研制了饱219.1/168.3 mm气举反循环双壁钻具和饱168.3 mm内平单壁钻具及配套附属器具,并成功应用于某直径1200 mm、深651.2 m的大口径瓦斯抽排井。该套钻具尺寸大,强度高,采用特殊螺纹连接。现场应用表明,钻具抗拉、抗扭强度高,密封性能好,应用气举反循环施工较传统工艺携岩效果好,机械钻速提高74.3%,井身质量优。此外,由于井内干净,钻井风险也得以大幅降低。

  1. Corrective Action Decision Document for Corrective Action Unit 168: Area 25 and 26 Contaminated Materials and Waste Dumps, Nevada Test Site, Nevada, Rev. No.: 2 with Errata Sheet

    Energy Technology Data Exchange (ETDEWEB)

    Wickline, Alfred

    2006-12-01

    This Corrective Action Decision Document has been prepared for Corrective Action Unit (CAU) 168: Area 25 and 26, Contaminated Materials and Waste Dumps, Nevada Test Site, Nevada. The purpose of this Corrective Action Decision Document is to identify and provide a rationale for the selection of a recommended corrective action alternative for each corrective action site (CAS) within CAU 168. The corrective action investigation (CAI) was conducted in accordance with the ''Corrective Action Investigation Plan for Corrective Action Unit 168: Area 25 and 26, Contaminated Materials and Waste Dumps, Nevada Test Site, Nevada'', as developed under the ''Federal Facility Agreement and Consent Order'' (1996). Corrective Action Unit 168 is located in Areas 25 and 26 of the Nevada Test Site, Nevada and is comprised of the following 12 CASs: CAS 25-16-01, Construction Waste Pile; CAS 25-16-03, MX Construction Landfill; CAS 25-19-02, Waste Disposal Site; CAS 25-23-02, Radioactive Storage RR Cars; CAS 25-23-13, ETL - Lab Radioactive Contamination; CAS 25-23-18, Radioactive Material Storage; CAS 25-34-01, NRDS Contaminated Bunker; CAS 25-34-02, NRDS Contaminated Bunker; CAS 25-99-16, USW G3; CAS 26-08-01, Waste Dump/Burn Pit; CAS 26-17-01, Pluto Waste Holding Area; and CAS 26-19-02, Contaminated Waste Dump No.2. Analytes detected during the CAI were evaluated against preliminary action levels (PALs) to determine contaminants of concern (COCs) for CASs within CAU 168. Radiological measurements of railroad cars and test equipment were compared to unrestricted (free) release criteria. Assessment of the data generated from the CAI activities revealed the following: (1) Corrective Action Site 25-16-01 contains hydrocarbon-contaminated soil at concentrations exceeding the PAL. The contamination is at discrete locations associated with asphalt debris. (2) No COCs were identified at CAS 25-16-03. Buried construction waste is present in at least two

  2. Development of an HPLC method to analyze and prepare elsinochrome C and hypocrellin A in the submerged fermentation broth of Shiria sp. SUPER-H168.

    Science.gov (United States)

    Hu, Mingming; Cai, Yujie; Liao, Xiangru; Hao, Zhikui; Liu, Jiayang

    2012-06-01

    A rapid and sensitive analytical method based on reverse-phase high-performance liquid chromatography was first developed to simultaneously determine elsinochrome C (EC) and hypocrellin A (HA) in the submerged fermentation. The mobile phase consisted of acetonitrile-water 60:40 (v/v) with a flow-rate of 1 mL/min. The calibration curves were as follows: y = 37,625x + 249,775 for EC, y = 30,813x + 556,409 for HA and linear at the investigated concentration. The correlation coefficients (R(2) ) were 0.9989 and 0.9998 respectively for EC and HA. The limits of detection and quantification were 175 and 585 µg/L for EC and 205 and 610 µg/L for HA. The precisions of concentration and retention times were less than 2.5 and 0.3%. The recovery of the method was greater than 95.0%. The methodology was applied to analyze simultaneously EC and HA concentrations in a submerged fermentation, and was adequate for analysis of biosynthesis of perylenequinones. The method was also amplified to separate and purify EC and HA using a semi-preparative C(18) column. In addition, elsinochrome C was first identified in the submerged fermentation broth of Shiraia sp. SUPER-H168. Copyright © 2011 John Wiley & Sons, Ltd.

  3. Structure determination of a 16.8 kDa copper protein at 2.1 A resolution using anomalous scattering data with direct methods.

    Science.gov (United States)

    Harvey, I; Hao, Q; Duke, E M; Ingledew, W J; Hasnain, S S

    1998-07-01

    The structure of rusticyanin, an acid-stable copper protein, has been determined at 2.1 A resolution by direct methods combined with the single-wavelength anomalous scattering (SAS) of copper (f" = 3.9 e-) and then conventionally refined (Rcryst = 18.7%, Rfree = 21.9%). This is the largest unknown protein structure (Mr approximately /= 16.8 kDa) to be determined using the SAS and direct-methods approach and demonstrates that by exploiting the anomalous signal at a single wavelength, direct methods can be used to determine phases at typical (approximately 2 A) macromolecular crystallographic resolutions. Extrapolating from the size of the anomalous signal for copper (f" approximately 4 e-), this result suggests that the approach could be used for proteins with molecular weights of up to 33 kDa per Se (f"max++ = 8 e- at the 'white line') and 80 kDa for a Pt derivative (f"max = 19 e- at the 'white line', L3 edge). The method provides a powerful alternative in solving a de novo protein structure without either preparing multiple crystals (i.e. isomorphous heavy-atom derivative plus native crystals) or collecting multi-wavelength anomalous diffraction (MAD) data.

  4. Corrective Action Decision Document for Corrective Action Unit 168: Areas 25 and 26 Contaminated Materials and Waste Dumps, Nevada Test Site, Nevada: Revision 0, Including Record of Technical Change No. 1

    Energy Technology Data Exchange (ETDEWEB)

    U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office

    2003-08-08

    This Corrective Action Decision Document identifies and rationalizes the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office's selection of recommended corrective action alternatives (CAAs) to facilitate the closure of Corrective Action Unit (CAU)168: Areas 25 and 26 Contaminated Materials and Waste Dumps, Nevada Test Site (NTS), Nevada, under the Federal Facility Agreement and Consent Order. Located in Areas 25 and 26 at the NTS in Nevada, CAU 168 is comprised of twelve Corrective Action Sites (CASs). Review of data collected during the corrective action investigation, as well as consideration of current and future operations in Areas 25 and 26 of the NTS, led the way to the development of three CAAs for consideration: Alternative 1 - No Further Action; Alternative 2 - Clean Closure; and Alternative 3 - Close in Place with Administrative Controls. As a result of this evaluation, a combination of all three CAAs is recommended for this CAU. Alternative 1 was the preferred CAA for three CASs, Alternative 2 was the preferred CAA for six CASs (and nearly all of one other CAS), and Alternative 3 was the preferred CAA for two CASs (and a portion of one other CAS) to complete the closure at the CAU 168 sites. These alternatives were judged to meet all requirements for the technical components evaluated as well as all applicable state and federal regulations for closure of the sites and elimination of potential future exposure pathways to the contaminated soils at CAU 168.

  5. Control of Electrotherapy plus Overhang Tuina for Lumber Disc Protrusion: A clinical report of 168 cases%体控电疗结合倒悬推拿疗法治疗腰椎间盘突出症168例效果观察

    Institute of Scientific and Technical Information of China (English)

    廖东初

    2010-01-01

    目的 观察体控电疗结合倒悬推拿综合疗法治疗腰椎间盘突出症的效果.方法 168例经CT或MRI诊断及结合临床症状均符合腰椎间盘突出症诊断标准的患者.给予体控电疗结合倒悬推拿疗法综合治疗20 d.结果 痊愈100例,好转66例,无效2例,总有效率98.8%.结论 体控电疗结合倒悬推拿综合疗法治疗腰椎间盘突出症不仅能充分发挥各种疗法之所长,且疗效明显.

  6. A laparoscopia no diagnóstico das doenças intra-abdominais. Análise de 168 casos

    Directory of Open Access Journals (Sweden)

    Andreollo N. A.

    1999-01-01

    Full Text Available A laparoscopia tem sido mais freqüentemente indicada nos últimos anos na complementação diagnóstica de afecções abdominais e na identificação de repercussões abdominais de doenças sistêmicas. Modernos equipamentos incluindo video-laparoscopia e o uso de agulhas de biópsias e outros instrumentais permitem elevada segurança e significante capacidade diagnóstica. OBJETIVO: Empregar a laparoscopia no diagnóstico de doenças abdominais e sistêmicas. MÉTODOS: Durante os últimos 9 anos, 168 doentes foram submetidos a laparoscopia e as principais indicações foram: ascites (43 casos - 25,5%; doenças hepáticas (42 casos - 25%; câncer gástrico (37 casos - 22%; linfomas (17 casos - 10,1%; tumores abdominais (9 casos - 5,4%; tuberculose peritoneal (8 casos - 4,8%; tumores hepáticos (6 casos - 3,6%; cisto mesentérico (1 caso - 0,6% e outras doenças (5 casos - 3,0%. Noventa e nove pacientes eram masculinos (58,9%, com idade variando de 9 a 78 anos (47,6 anos. Biópsias hepáticas foram realizadas em 92 casos (54,7% e outras biópsias tumorais em 26 casos (15,4%. RESULTADOS: O diagnóstico da doença foi estabelecido ou confirmado em 145 casos (86,3%. Em 25 casos de câncer gástrico (67,5%, a laparoscopia contra-indicou a laparotomia em função de detecção de doença avançada. Dois pacientes apresentaram hemorragia (1,2% após biópsias hepáticas e a laparotomia foi imediatamente indicada. Um doente, cujo diagnóstico era de lupus sistêmico, apresentou abscesso abdominal, broncopneumonia e faleceu (0,6%. CONCLUSÃO: O procedimento tem pequeno número de complicações e quando empregado como método diagnóstico complementar, evita a laparotomia e agiliza medidas terapêuticas.

  7. 后腹腔镜下解剖性根治性肾切除术168例%Technique of retroperitoneoscopic anatomical radical nephrectomy

    Institute of Scientific and Technical Information of China (English)

    张楠; 翟振波; 金雷; 秦卫军; 张运涛; 杨力军; 王禾; 袁建林

    2008-01-01

    目的 介绍后腹腔镜下解剖性根治性肾切除术的手术方法及临床效果. 方法对168例肾癌患者实施后腹腔镜下解剖性根治性.肾切除术.肿瘤位于左肾87例,右肾81例.肿瘤直径2.0~6.9 cm,平均4.7 cm.T1.N0M0 92例,T10N0M0.76例.常规制备后腹腔间隙.按顺序分别进入4个相对无血管解部层面进行分离.第一分离层面位于腰肌前间隙,此层面可以在手术初期快速找到肾蒂;第__二分离层面位于Gerota筋膜前叶与融合筋膜之间;第三分离层面位于肾上腺与肾上极之间或膈肌与肾上腺间隙;第四分离层面位丁Gerota筋膜的锥尖部. 结果 168例手术均成功完成,平均手术时间(138±46)min,平均术中出血量(90±30)ml.恢复饮食和下床活动时间分别为1.3 d和1.2 d.术后平均住院日5.8 d.14例发生腹膜破口,未影响手术进行.18例术后有不同程度肩痈,2 d后自行消失.123例随访6~18个月,平均8个月,均无瘤生存. 结论 后腹腔镜下解削性根治性肾切除术具有解剖层次清楚、术中出血少、术野清晰、疗效确切、并发症少、恢复快等优点,为需要根治性肾切除术的患者提供了更好的选择.%Objective To introduce the technique and evaluate the clinical effect of retroperito-neoscopic anatomical radical nephrectomy. Methods One hundred and sixty-eight patients under-went retroperitoneoscopic anatomical radical nephrectomies. The average tumor size was 4.7 cm (ran-ging from 2.0-6.9 era) in diameter. There were 87 tumors in the left kidney and 81 tumors in right kidney. Ninety-two eases were in cli.nieal stage T1a. N0 M0 and 76 in T1b N0 M0. Retroperitoneal space was created routinely at lateral decubitus position. Four relatively bloodless planes were orderly entered for exposure and separation of the kidney outside Gerota's fascia. The first dissection plane was be-tween the psoas and posterior Gerota's fascia. The renal pedicle was found in this plane. The

  8. 时尚颠覆传统 酒店回归家居——上海莫泰168旅店(延安店)评弹

    Institute of Scientific and Technical Information of China (English)

    王大悟

    2005-01-01

    莫泰168旅店(Motel 168)是近几年在经济型酒店中崛起的一支新军,然而其发展速度令人吃惊,到目前为止已扩张到4200间客房;到年底,将突破5000间,成为我国最大的经济型酒店的连锁集团;其中于5月份开张的延安店,则更以拥有516间客房(不包括相邻的“莫泰268”)成为全球最大的经济型酒店。特别显示底气和实力的是,到目前为止这4200间客房的12家“莫泰168”,全部是直营店,没有一家加盟店,这在我国诸多经济型酒店的连锁中也是独树一帜的。

  9. 肾综合征出血热中枢神经系统损害168例回顾性分析%Retrospective analysis of 168 cases of patients with hemorrhagic fever and renal syndrome erupts simultaneously central nervous system damage

    Institute of Scientific and Technical Information of China (English)

    吕国良; 于渤; 包叔平; 周文兴

    2013-01-01

    目的 探讨肾综合征出血热患者并发中枢神经系统损害的临床特点.方法 回顾性分析1998 ~ 2010年间于辽宁医学院附属第一医院住院治疗,并发中枢神经系统损害的肾综合征出血热患者168例.结果 并发中枢神经系统损害的肾综合征出血热患者可出现意识障碍、癫痫发作、脑膜刺激征阳性、精神失常等多种临床表现.轻、中、重及危重型患者均可出现中枢神经系统损害,重型及危重型患者分别占42.9%和38.7%.此外,各年龄段均可出现中枢神经系统损害,其中60岁以上的老年人所占比例高达51.8%.虽经积极的内科综合治疗,其病死率仍高达31.0%.结论 合并中枢神经系统损害的肾综合征出血热患者病情重,病死率高,一旦出现,需引起足够重视.%Objective To study the clinical characteristics of patients and hemorrhagic fever and renal syndrome ( HFRS) eruptssimultaneously central nervous system damage. Methods Clinical data of 168 HFRS patients erupted simultaneously central nervous system damage and hospitalized in first affiliated hospital of Liaoning medical university from 1998 to 2010 were analyzed. Results Many clinical manifestations including disturbance of consciousness, seizures, positive signs of meningeal irritation and psychiatric disorders could be occurred. Central nervous system damage can occur in slight, medium, serious and clinical HFRS patients; in addition, serious and critical types occupied the main incidence, which were 42. 9% and 38. 7% respectively. All ages of HFRS patients have the risk of suffering central nervous system damage; Percentage of people older than 60 years was up to 51.8%. Mortality remained as high as 31.0% even after active internal medical treatment. Conclusion High mortality and critical condition always appeared in patients of HFRS erupts simultaneously central nervous system damage on which should be paid more attention in clinical work.

  10. EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Scientific Opinion on the substantiation of health claims related to a combination of Lactobacillus gasseri PA 16/8, Bifidobacterium bifidum M 20/5 and Bifidobacterium longum SP 07/3 and maintenance of upper respiratory tract defence

    DEFF Research Database (Denmark)

    Tetens, Inge

    of Lactobacillus gasseri PA 16/8, Bifidobacterium bifidum M 20/5 and Bifidobacterium longum SP 07/3 and maintenance of upper respiratory tract defence against pathogens. The food constituent that is the subject of the claim, a combination of Lactobacillus gasseri PA 16/8, Bifidobacterium bifidum M 20...... did not show an effect of consumption of a combination of Lactobacillus gasseri PA 16/8, Bifidobacterium bifidum M 20/5 and Bifidobacterium longum SP 07/3 on defence against pathogens in the upper respiratory tract. On the basis of the data presented, the Panel concludes that a cause and effect...... relationship has not been established between the consumption of a combination of Lactobacillus gasseri PA 16/8, Bifidobacterium bifidum M 20/5 and Bifidobacterium longum SP 07/3 and maintenance of upper respiratory tract defence against pathogens....

  11. Expression.purification and antigenicity of a recombinant respiratory syncyttal virus fusion gene encoded protein(amino acids 168-289)in the insect cells%呼吸道合胞病毒F蛋白第168~289氨基酸片段的昆虫细胞表达及其抗原性分析

    Institute of Scientific and Technical Information of China (English)

    单志娟; 项金忠

    2009-01-01

    目的 研究人呼吸道合胞病毒(RSV)F基因第546~881碱基编码的融合蛋白(即F蛋白)主要抗原性区域第168~289氨基酸片段的抗原性初步探讨其作为诊断抗原的应用价值.方法 用逆转录(RT)-PCR的方法扩增出RSV Long株F基因546~881 bp片段(F'),将其插入到转移载体质粒pBacPAK9中,获得相应的重组质粒pBacRSV F',与线性杆状病毒BacPAK6 DNA(Bsu36 Ⅰ酶切)共转染Sf9昆虫细胞获得重组病毒BacPAK F',并在昆虫细胞中表达.重组蛋白用Ni2+螫合柱亲和层析纯化,用免疫印迹(Western blot,WB)法检测重组蛋白的抗原活性.并用该方法检测33例急性下呼吸道感染患儿血清特异性抗体,同时用间接免疫荧光法检测患儿的鼻咽分泌物中RSV抗原.对两种方法检测标本的阴性率进行比较.结果 重组病毒BacPAK F'在昆虫细胞中表达相对分子质量约13 000的重组蛋白.纯化后的重组蛋白能与特异性抗RSV抗体结合.WB检测33例急性下呼吸道患儿血清特异性抗体,结果显示阳性11例,阳性率为33.3%,免疫荧光法检测结果阳性9例,阳性率为27.3%,2种检测方法阳性率差异无统计学意义(x2=0.29,P>0.05).结论 纯化后的在昆虫细胞中表达的RSV F基因546~881 bp片段编码的融合蛋白片段具有较强的抗原活性,对RSV感染的快速诊断具有一定的临床应用价值.%Objective To explore the antigenicity of the recombinant respiration syncytial virus (RSV)fusion protein (amino acids 168-289) encoded by 546-881 bases of the fusion gene expressed in insect baculoviruses expression system.Methods The fragment F' of fusion gene 546-881 bases was amplified from viral RNA( Long strain ) by the reverse transcription-polymerase chain reaction(RT-PCR).F' was inserted into transfer vector pBacPAK9 and the recombinant plasmid pBacRSV F' was constructed.Sf9 insect cells were then co-transfeeted with a mixture of recombinant plasmids pBacRSV F' and linearized BacPAK6 viral

  12. Biocontrol Effection of Genetically-modified Strains Derived from Bacillus subtilis 168 on Meloidogyne incognita%枯草芽胞杆菌168的遗传修饰菌株对番茄根结线虫病的生防作用

    Institute of Scientific and Technical Information of China (English)

    魏利辉; 周冬梅; 王云鹏; 郭坚华

    2011-01-01

    PopW from Ralstonia solanacearum is a member of the harpin protein family, eliciting hypersensitive cell death in non-host plants, inducing disease resistance in plants and enhancing plant growth. To achieve secretory expression of PopW protein in Bacillus subtilis, we constructed recombinant expression vector pHTPOW, which carried the p43 promoter, a signal peptide element of nprB, and the full length PopW gene. The expression of PopW in the genetically modified strains was confirmed by SDS-PAGE and Western bloting analysis. In vitro test showed that on the 24 and 48 h after treated with the genetically modified strain BsW, the J2 mortality rates of Meloidogyne incognita were 53.4% and 79.6%, respectively. In the green house trials, the number of eggs and galls reduced significantly 42-days after tomato (Lycopersicon esculentum) treatment with the transgenic strain BsW and the biocontrol efficacy reached 60.0%. The genetically-modified bacteria strain which enhances plant growth and inhibits nematodes activity offers a new promising perspective on the reasearch and development of new microbial pesticides.%PopW是来源于青枯病菌(Ralstonia solancearum)的一种harpin蛋白,具有诱导植物抗病性和促进植物生长的作用.构建了含有p43强启动子和nprB信号肽的PopW基因的表达载体pHTPOW,将表达载体pHTPOW转入枯草芽胞杆菌(Bacillus subtilis )168得到工程菌株BsW.SDS-PAGE和Western blot结果表明BsW能分泌PopW蛋白.在离体实验中,测试工程菌BsW对南方根结线虫(Meloidogyne incognita)二龄幼虫(J2)的致死作用,结果显示处理24和48 h后,J2死亡率分别为53.4%和79.6%;在温室实验中,施用工程菌BsW的菌悬液处理番茄(Lycopersicon esculentum)植株,6周后根系上的卵块和根结数目明显减少,防效达到60.0%.具有促生和抑制线虫作用基因工程菌的构建,为研究和开发新型微生物农药,提供了一个新的视角.

  13. Proteomic analysis of small acid soluble proteins in the spore core of Bacillus subtilis ΔprpE and 168 strains with predictions of peptides liquid chromatography retention times as an additional tool in protein identification

    Directory of Open Access Journals (Sweden)

    Obuchowski Michał

    2010-11-01

    Full Text Available Abstract Background Sporulation, characteristic for some bacteria such as Bacillus subtilis, has not been entirely defined yet. Protein phosphatase E (PrpE and small, acid soluble spore proteins (SASPs influence this process. Nevertheless, direct result of PrpE interaction on SASPs content in spore coat of B. subtilis has not been evidenced so far. As proteomic approach enables global analysis of occurring proteins, therefore it was chosen in this experiment to compare SASPs occurrence in two strains of B. subtilis, standard 168 and ΔprpE, lacking PrpE phosphatase. Proteomic analysis is still a challenge, and despite of big approach in mass spectrometry (MS field, the identification reliability remains unsatisfactory. Therefore there is a rising interest in new methods, particularly bioinformatic tools that would harden protein identification. Most of currently applied algorithms are based on MS-data. Information from separation steps is not still in routine usage, even though they also provide valuable facts about analyzed structures. The aim of this research was to apply a model for peptides retention times prediction, based on quantitative structure-retention relationships (QSRR in SASPs analysis, obtained from two strains of B. subtilis proteome digests after separation and identification of the peptides by LC-ESI-MS/MS. The QSRR approach was applied as the additional constraint in proteomic research verifying results of MS/MS ion search and confirming the correctness of the peptides identifications along with the indication of the potential false positives and false negatives. Results In both strains of B. subtilis, peptides characteristic for SASPs were found, however their identification confidence varied. According to the MS identity parameter Xcorr and difference between predicted and experimental retention times (ΔtR four groups could be distinguished: correctly and incorrectly identified, potential false positives and false

  14. 27 CFR 9.168 - Fair Play.

    Science.gov (United States)

    2010-04-01

    ...: (1) Omo Ranch, California, 1952 (photorevised 1973); (2) Aukum, California, 1952 (photorevised 1973... Fork of the Cosumnes River in a southeasterly direction onto the “Omo” Quadrangle map and continues until it meets the range line between R. 12 E. and R. 13 E. (“Aukum” Quadrangle and “Omo Ranch...

  15. 22 CFR 16.8 - Agency review.

    Science.gov (United States)

    2010-04-01

    ...), the Director of Personnel and Manpower (AID), and the Chief, Employee-Management Relations Division..., regulation or agency policy which the grievant may believe was violated or misapplied; copies of any correspondence under § 16.7(a), any documentary evidence readily available to the grievant on which the...

  16. 168 橄榄油(Olive oil)

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ 又名 Sweet Oil,Salad Oil,Olivae oleum. 植物名 Olea europaea. 活性成分与药理作用橄榄油含有不饱和脂肪酸,在饮食中用来替代饱和脂肪时可降低胆固醇水平.橄榄油中裂环烯醚萜类(secoiridoides)化合物体外具有广谱的抗微生物活性.

  17. Glacial Features (Point) - Quad 168 (EPPING, NH)

    Data.gov (United States)

    University of New Hampshire — The Glacial Features (Point) layer describes point features associated with surficial geology. These glacial features include, but are not limited to, delta forsets,...

  18. 25 CFR 168.17 - Concurrence procedures.

    Science.gov (United States)

    2010-04-01

    ... the carrying capacity of the range lands on a continuing basis. (7) Grazing control is a program... to its carrying capacity. (b) The Area Director will seek the participation of the Hopi Tribe in...

  19. 21 CFR 168.120 - Glucose sirup.

    Science.gov (United States)

    2010-04-01

    ... CONSUMPTION SWEETENERS AND TABLE SIRUPS Requirements for Specific Standardized Sweeteners and Table Sirups... is derived from sorghum grain, the alternative name of the food is “Sorghum grain sirup”. The...

  20. Fisheries Restoration Grant Program Projects [ds168

    Data.gov (United States)

    California Department of Resources — This shapefile (FRGP_All_020209.shp) represents the locations of all ongoing and completed salmonid restoration projects in California with existing records in the...

  1. QTL Information Table: 168 [Q-TARO

    Lifescience Database Archive (English)

    Full Text Available Sh3-gla Morphological trait Panicle/flower seed shattering RFLP B)Fine F2 Taichung ...65 O. glaberrima (ACC IRGC104038) R1427 C107 rgn Nagai, Y.S., Doi, K., and Yoshimura, A. (2002). A seed shatter

  2. 21 CFR 168.180 - Table sirup.

    Science.gov (United States)

    2010-04-01

    ... added for nutritional purposes and artificial sweeteners are not considered to be suitable ingredients... CONSUMPTION SWEETENERS AND TABLE SIRUPS Requirements for Specific Standardized Sweeteners and Table Sirups... percent soluble sweetener solids by weight and is prepared with or without added water. It may contain...

  3. Difficulties in the study of cosmic radio noise absorption at 30 MHz using riometer at low latitude station, Kolhapur (Lat-16.8°N, Long-74.25°E)

    Science.gov (United States)

    Nikte, S. S.; Sharma, A. K.; Nade, D. P.; Rokade, M. V.; Ghodpage, R. N.; Patil, P. T.; Bhonsle, R. V.

    2014-01-01

    A dual dipole antenna has been installed at low latitude station Kolhapur (Geographic 16.8°N, 74.25°E), Maharashtra, India for the study of cosmic radio noise absorption using Solid State Riometer (which operates at 30 MHz) during pre phase of 24th solar maxima. The aim for this type of study over Kolhapur was to know the response of lower (D region) ionosphere over low latitude by cosmic radio noise absorption using riometer technique during quite period as well as sudden ionospheric disturbances (SID). The observations are being taken for 3 years. Two different sites (˜40 km away from each other) were used for the installation of riometer equipment assuming minimum local noise. It is found that solar noise to cosmic radio noise hence resulting in signal saturation. The night time signal is relatively free of interference but sometimes local noise is responsible for spike-like signatures. Hence it is concluded that Kolhapur (a low latitude station) is not suitable for the study of cosmic radio noise absorption on 30 MHz with riometer and dual dipole antenna. Proper choice for operating frequency of riometer and antenna gain is suggested for low latitude use of this technique for ionospheric deviative and nondeviative absorption studies.

  4. Dysprosium-free melt-spun permanent magnets.

    Science.gov (United States)

    Brown, D N; Wu, Z; He, F; Miller, D J; Herchenroeder, J W

    2014-02-12

    Melt-spun NdFeB powders can be formed into a number of different types of permanent magnet for a variety of applications in electronics, automotive and clean technology industries. The melt-spinning process produces flake powder with a fine uniform array of nanoscale Nd2Fe14B grains. These powders can be net-shape formed into isotropic polymer-bonded magnets or hot formed into fully dense magnets. This paper discusses the influence of heavy rare earth elements and microstructure on the magnetic performance, thermal stability and material cost of NdFeB magnets. Evidence indicates that melt-spun nanocrystalline NdFeB magnets are less dependent on heavy rare earth elements for high-temperature performance than the alternative coarser-grained sintered NdFeB magnets. In particular, hot-pressed melt-spun magnets are an attractive low-cost solution for applications that require thermal stability up to 175-200 °C.

  5. Structural and magnetic study of dysprosium substituted cobalt ferrite nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, Hemaunt, E-mail: hvatsal@gmail.com [Department of Physics, Govind Ballabh Pant University of Agr. & Technology, Pantnagar, Uttarakhand 263145 (India); Srivastava, R.C. [Department of Physics, Govind Ballabh Pant University of Agr. & Technology, Pantnagar, Uttarakhand 263145 (India); Pal Singh, Jitendra [Advanced Analysis Centre, Korea Institute of Science and Technology, Seoul 02792 (Korea, Republic of); Negi, P. [Department of Physics, Govind Ballabh Pant University of Agr. & Technology, Pantnagar, Uttarakhand 263145 (India); Agrawal, H.M. [Advanced Analysis Centre, Korea Institute of Science and Technology, Seoul 02792 (Korea, Republic of); Das, D. [UGC-DAE CSR Kolkata Centre, Kolkata 700098 (India); Hwa Chae, Keun [Advanced Analysis Centre, Korea Institute of Science and Technology, Seoul 02792 (Korea, Republic of)

    2016-03-01

    The present work investigates the magnetic behavior of Dy{sup 3+} substituted cobalt ferrite nanoparticles. X-ray diffraction studies reveal presence of cubic spinel phases in these nanoparticles. Raman spectra of these nanoparticles show change in intensity of Raman bands, which reflects cation redistribution in cubic spinel lattice. Saturation magnetization and coercivity decrease with increase of Dy{sup 3+}concentration in these nanoparticles. Room temperature Mössbauer measurements show the cation redistribution in these nanoparticles and corroborates the results obtained from Raman Spectroscopic measurements. Decrease in magnetization of Dy{sup 3+} substituted cobalt ferrite is attributed to the reduction in the magnetic interaction and cation redistribution. - Highlights: • Slight decrease in crystallite size after Dy{sup 3+} doping. • Saturation magnetization and coercivity decrease after Dy{sup 3+} doping. • Mössbauer measurements show the cation redistribution in the samples.

  6. Dysprosium Acetylacetonato Single-Molecule Magnet Encapsulated in Carbon Nanotubes

    Directory of Open Access Journals (Sweden)

    Ryo Nakanishi

    2016-12-01

    Full Text Available Dy single-molecule magnets (SMMs, which have several potential uses in a variety of applications, such as quantum computing, were encapsulated in multi-walled carbon nanotubes (MWCNTs by using a capillary method. Encapsulation was confirmed by using transmission electron microscopy (TEM. In alternating current magnetic measurements, the magnetic susceptibilities of the Dy acetylacetonato complexes showed clear frequency dependence even inside the MWCNTs, meaning that this hybrid can be used as magnetic materials in devices.

  7. Photodissociation spectroscopy of the dysprosium monochloride molecular ion

    CERN Document Server

    Dunning, Alexander; Showalter, Steven J; Puri, Prateek; Kotochigova, Svetlana; Hudson, Eric R

    2015-01-01

    We have performed a combined experimental and theoretical study of the photodissociation cross section of the molecular ion DyCl$^+$. The cross section for the photon energy range 35,500 cm$^{-1}$ to 47,500 cm$^{-1}$ is measured using an integrated ion trap and time-of-flight mass spectrometer, and we observe a broad, asymmetric profile that is peaked near 43,000 cm$^{-1}$. The theoretical cross section is determined from electronic potentials and transition dipole moments calculated using the relativistic configuration-interaction valence-bond and coupled-cluster methods. The electronic structure of DyCl$^+$ is unprecedentedly complex due to the presence of multiple open electronic shells, including 4f$^{10}$ orbitals. The molecule has nine attractive potentials with ionically-bonded electrons and 99 repulsive potentials dissociating to a ground state Dy$^+$ ion and Cl atom. We explain the lack of symmetry in the cross section as due to multiple contributions from one-electron-dominated transitions between t...

  8. FTIR and Electrical Study of Dysprosium Doped Cobalt Ferrite Nanoparticles

    Directory of Open Access Journals (Sweden)

    Hemaunt Kumar

    2014-01-01

    Full Text Available We have studied the role of Dy3+ doping on the XRD, TEM, FTIR, and dielectric and electrical properties of CoFe2O4 at room temperature. Cubic spinel phase of CoFe2−xDyxO4 (x = 0.00, 0.05, 0.10, and 0.15 was synthesized by using different sintering temperatures (300, 500, 700, and 900°C. The two absorption bands ν1 and ν2 are observed in Fourier transform infrared spectroscopy (FTIR spectra corresponding to the tetrahedral and octahedral sites, which show signature of spinel structure of the sample. For the sample sintered at 300°C, the dielectric constant is almost unchanged with the frequency at the particular concentrations of x = 0.00 and 0.05. Similar result is obtained for the sample sintered at 500°C (x = 0.10, 0.15, 700°C (x = 0.05, 0.10, and 0.15, and 900°C (x = 0.05, 0.10. An increase in the dielectric constant was observed for the undoped cobalt ferrite sintered at 500, 700, and 900°C. The values of electrical resistivity of the materials vary from ~105 to 109 Ω-cm.

  9. Adsorption of D113 Resin for Dysprosium(Ⅲ)

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The adsorption behavior and mechanism of D113 resin for Dy(Ⅲ) was investigated by using the method of resin adsorption. Experimental results show that the optimum medium pH of adsorption of D113 resin for Dy3+ is pH=6.00 in the HAc-NaAc medium. The static adsorption capacity of D113 resin for Dy3+chemical analysis and IR spectra.

  10. 1300-nm gain obtained with dysprosium-doped chloride crystals

    Energy Technology Data Exchange (ETDEWEB)

    Page, R.H.; Schaffers, K.I.; Beach, R.J.; Payne, S.A.; Krupke, W.F.

    1996-03-01

    Dy{sup 3+} - doped chloride crystals have high 1300-nm emission quantum yields. Pump - probe experiments on La Cl{sub 3}:Dy{sup 3+} demonstrate optical gain consistent with predictions based on spectroscopic cross sections and lifetimes.

  11. Visible luminescence of dysprosium ions in oxyhalide lead borate glasses

    Science.gov (United States)

    Pisarska, Joanna; Żur, Lidia; Pisarski, Wojciech A.

    2011-08-01

    Visible luminescence of Dy 3+ ions in oxyhalide lead borate glasses was examined. Luminescence spectra show two intense bands at 480 nm and 573 nm due to 4F 9/2 → 6H 15/2 (blue) and 4F 9/2 → 6H 13/2 (yellow) transitions of Dy 3+. Luminescence decays from 4F 9/2 state and yellow-to-blue luminescence intensity ratios (Y/B) were analysed with PbX 2 (X = F, Cl) content. An introduction of PbX 2 to the borate glass results in the increasing of 4F 9/2 lifetime and the decreasing of yellow-to-blue luminescence intensity ratio, which is due to reduction of covalency between Dy 3+ and O 2-/X - ions.

  12. MAGNETIC FIELD INDUCED FIRST-ORDER TRANSITIONS IN DYSPROSIUM ORTHOFERRITE

    OpenAIRE

    Eremenko, V.; Gnatchenko, S.; Kharchenko, N.; Lebedev, P.; Piotrowski, K; Szymczak, H.; Szymczak, R.

    1988-01-01

    New type of magnetic first-order phase transition induced by external magnetic field applied in the ab-plane in DyFeO3 is investigated using different magnetooptic techniques. The phenomenological model of this transition is proposed. The phase diagram in H-T plane has been obtained for various H orientation in the ab-plane.

  13. 复方海蛇胶囊随机双盲法治疗168例增龄相关记忆障碍的临床研究

    Institute of Scientific and Technical Information of China (English)

    马永兴; 王传馥; 谢素珍; 顾跃娣; 俞正炎; 杨俭英

    2001-01-01

    目的 进一步观察复方海蛇胶囊(RSC)对增龄相关记忆障碍的疗效。方法 双盲法治疗168例增龄相关记忆障碍(AAMI)(MQ<90),用药分别为RSC组与空白对照组,均为每次4粒胶囊,每粒0.28g,每日3次,疗程3个月。以WMS评定疗效。结果 83例RSC治疗前与治疗后MQ分别为81.35±7.51及90.94±8.98(P<0.001);85例对照组治疗前后分别为84.34±6.80及88.60±7.40(P<0.001)。RSC与对照组治疗后复查MQ增值分别为9.30±6.46及4.31±5.29(P<0.001)。两组总有效率分别为62.65%及23.53%(P<0.001)。本组未见明显副作用。结论 RSC可显著提高增龄相关记忆障碍的记忆商,安全有效。

  14. Analysis of 168 cases of early cold therapy on burn wound%早期创面冷疗在中小面积烧伤治疗中的应用

    Institute of Scientific and Technical Information of China (English)

    陶仁清; 卢朋松; 倪鹏

    2009-01-01

    目的 观察中小面积烧伤创面早期冷疗在烧伤治疗中的疗效. 方法用手术专用泡手桶盛放蒸馏水配制成的1:5 000新洁尔灭溶液,温度维持在10~15 ℃.将烧伤肢体创面浸泡在液体中,头面部及躯干创面使用无菌湿冷棉垫冷敷.根据患者对冷疗的耐受情况调整冷疗液的温度,观察患者生命体征变化,观察创面肿胀、渗出及色泽变化,将创面愈合时间和愈后瘢痕增生情况与常规治疗组进行比较. 结果对168例中小面积Ⅱ度烧伤患者,冷疗后疼痛多在3~5 min明显减轻或缓解.与对照组相比愈合时间明显缩短、疼痛大大减轻.随访半年无严重瘢痕增生. 结论中小面积烧伤早期进行冷疗,减轻痛苦,缩短疗程,促进创面愈合、减少瘢痕增生,值得临床推广应用.

  15. Propuesta para el manejo de información clínica basada en la NOM-168 por medio de un dispositivo móvil y la tecnología NFC

    Directory of Open Access Journals (Sweden)

    Salvador Escorcia García

    2014-01-01

    Full Text Available Si un expediente clínico no se encuentra completo un prestador de servicios médicos no contará con la información necesaria para ofrecer una mejor atención al paciente. Actualmente existen esfuerzos para contar con un expediente clínico completo y de acceso rápido, pero en situaciones de emergencia la principal fuente de información para brindar una mejor atención es el paciente, pero este no siempre se encuentra disponible para proporcionar información. En el presente artículo se propone una metodología para el manejo de información clínica por medio de la tecnología inalámbrica NFC y los dispositivos móviles. Como producto final de dicha metodología se obtuvo una aplicación móvil Android. La información clínica que fue manejada en dicha metodología, se obtuvo a partir de la NOM-168 que establece los datos mínimos por los que se debe componer un expediente clínico. Dicha información clínica fue comparada con el estándar HL7 CDA Versión 2 para obtener un documento XML, el cual fue utilizado como una plantilla para crear documentos clínicos electrónicos. La incorporación de la tecnología NFC en dicha metodología fue necesaria para almacenar y recuperar la información clínica en la memoria de tags NFC. La ventaja de lo anterior es que un tag NFC tiene distintas presentaciones como puede ser un calcomanía o una tarjeta de identificación, por lo que los pacientes pueden fácilmente transportar información clínica. Y además dicha información puede ser accedida por medio de un dispositivo móvil con NFC incluso si los pacientes se encuentran en un estado que no puedan facilitar información.

  16. 6168例染色体核型分析的产前诊断指征评价%Evaluation of prenatal diagnosis indicators of 6 168 cases of chromosome karyotype analysis

    Institute of Scientific and Technical Information of China (English)

    钟惠珠; 刘晗; 易翠兴; 潘敏; 杨昕; 胡舜妍; 袁思敏; 李东至

    2013-01-01

    Objective To study the value of different prenatal diagnosis indicators in diagnosis of fetal chromosomal abnormalities.Methods 6 168 pregnant women with indications of prenatal diagnosis were subjected to sampling through ultrasound-guided transabdominal puncture and chromosomal karyotype analysis.Detection rates and types of fetal chromosomal abnormalities in different pregnant period and with different indications were compared.Predictive funtion of indications for fetal chromosomal abnormalities were evaluated.Results 370 cases of abnormal karyotype were detected in all.The detection rates of abnormal chromosome karyotype in high risk by serum screening group,advanced maternal age group,fetal NT thickening group and abnormal fetuses by ultrasound screening group were 4.32% (150/3 469),3.08% (16/519),25.0% (18/72) and 11.32% (18/72).The major abnormal karyotypes in the first three groups were aneuploidy with majority of trisomy 21.The latter group,sex chromosome abnormality Turner and trisomy 21 were major.According to exising screening criteria,the positive likelihood ratios LR(+) of the four groups were 1.02,0.53,1.57 and 2.15,respectively,and the negative likelihood ratios LR(-) were 0.84,1.05,0.57 and 0.71,respectively.In the group of abnormal fetuses by ultrasound screening,positive detection of holoprosencephaly,lymphatic hygroma,fetal multiple malformation and fetal NT thickness etc.was more meaningful.LR(+-) were 36.93,11.46,1.77 and 1.62,respectively,while LR(-) were 0.95,0.73,0.72 and 0.57,respectively.Conclusion Ultrasound screening and fetal NT measurement may help make diagnosis for more fetuses in early pregnancy.Fetal lymphatic hygroma,multiple malformation and fetal NT thickness etc.indicate higher rate of fetal chromosomal abnormalities and fetal chromosomal detection should be performed.%目的 探讨不同产前诊断指征在胎儿染色体异常诊断中的价值.方法 对有产前诊断指征的6168例孕妇,在超声引导下经

  17. Corrective Action Investigation Plan for Corrective Action Unit 168: Areas 25 and 26 Contaminated Materials and Waste Dumps, Nevada Test Site, Nevada (Rev. 0) includes Record of Technical Change No. 1 (dated 8/28/2002), Record of Technical Change No. 2 (dated 9/23/2002), and Record of Technical Change No. 3 (dated 6/2/2004)

    Energy Technology Data Exchange (ETDEWEB)

    U.S. Department of Energy, National Nuclear Security Administration Nevada

    2001-11-21

    This Corrective Action Investigation Plan contains the U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office's approach to collect data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit 168 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 168 consists of a group of twelve relatively diverse Corrective Action Sites (CASs 25-16-01, Construction Waste Pile; 25-16-03, MX Construction Landfill; 25-19-02, Waste Disposal Site; 25-23-02, Radioactive Storage RR Cars; 25-23-18, Radioactive Material Storage; 25-34-01, NRDS Contaminated Bunker; 25-34-02, NRDS Contaminated Bunker; CAS 25-23-13, ETL - Lab Radioactive Contamination; 25-99-16, USW G3; 26-08-01, Waste Dump/Burn Pit; 26-17-01, Pluto Waste Holding Area; 26-19-02, Contaminated Waste Dump No.2). These CASs vary in terms of the sources and nature of potential contamination. The CASs are located and/or associated wit h the following Nevada Test Site (NTS) facilities within three areas. The first eight CASs were in operation between 1958 to 1984 in Area 25 include the Engine Maintenance, Assembly, and Disassembly Facility; the Missile Experiment Salvage Yard; the Reactor Maintenance, Assembly, and Disassembly Facility; the Radioactive Materials Storage Facility; and the Treatment Test Facility Building at Test Cell A. Secondly, the three CASs located in Area 26 include the Project Pluto testing area that operated from 1961 to 1964. Lastly, the Underground Southern Nevada Well (USW) G3 (CAS 25-99-16), a groundwater monitoring well located west of the NTS on the ridgeline of Yucca Mountain, was in operation during the 1980s. Based on site history and existing characterization data obtained to support the data quality objectives process, contaminants of potential concern (COPCs) for CAU 168 are primarily radionuclide; however, the COPCs for several CASs were not defined. To address COPC

  18. Corrective Action Investigation Plan for Corrective Action Unit 168: Areas 25 and 26 Contaminated Materials and Waste Dumps, Nevada Test Site, Nevada (Rev. 0) includes Record of Technical Change No. 1 (dated 8/28/2002), Record of Technical Change No. 2 (dated 9/23/2002), and Record of Technical Change No. 3 (dated 6/2/2004)

    Energy Technology Data Exchange (ETDEWEB)

    U.S. Department of Energy, National Nuclear Security Administration Nevada

    2001-11-21

    This Corrective Action Investigation Plan contains the U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office's approach to collect data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit 168 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 168 consists of a group of twelve relatively diverse Corrective Action Sites (CASs 25-16-01, Construction Waste Pile; 25-16-03, MX Construction Landfill; 25-19-02, Waste Disposal Site; 25-23-02, Radioactive Storage RR Cars; 25-23-18, Radioactive Material Storage; 25-34-01, NRDS Contaminated Bunker; 25-34-02, NRDS Contaminated Bunker; CAS 25-23-13, ETL - Lab Radioactive Contamination; 25-99-16, USW G3; 26-08-01, Waste Dump/Burn Pit; 26-17-01, Pluto Waste Holding Area; 26-19-02, Contaminated Waste Dump No.2). These CASs vary in terms of the sources and nature of potential contamination. The CASs are located and/or associated wit h the following Nevada Test Site (NTS) facilities within three areas. The first eight CASs were in operation between 1958 to 1984 in Area 25 include the Engine Maintenance, Assembly, and Disassembly Facility; the Missile Experiment Salvage Yard; the Reactor Maintenance, Assembly, and Disassembly Facility; the Radioactive Materials Storage Facility; and the Treatment Test Facility Building at Test Cell A. Secondly, the three CASs located in Area 26 include the Project Pluto testing area that operated from 1961 to 1964. Lastly, the Underground Southern Nevada Well (USW) G3 (CAS 25-99-16), a groundwater monitoring well located west of the NTS on the ridgeline of Yucca Mountain, was in operation during the 1980s. Based on site history and existing characterization data obtained to support the data quality objectives process, contaminants of potential concern (COPCs) for CAU 168 are primarily radionuclide; however, the COPCs for several CASs were not defined. To address COPC

  19. Engineering of Bacillus subtilis 168 for increased nisin resistance

    DEFF Research Database (Denmark)

    Hansen, Mette; Wangari, Romilda; Hansen, Egon Bech

    2009-01-01

    . Bacillus subtilis had been suggested as a potential host for the biosynthesis of nisin but was discarded due to its sensitivity to the lethal action of nisin. In this study, we have reevaluated the potential of B. subtilis as a host organism for the heterologous production of nisin. We applied...

  20. 26 CFR 1.168(i)-1 - General asset accounts.

    Science.gov (United States)

    2010-04-01

    ... depreciation method; (C) Have the same applicable recovery period; (D) Have the same applicable convention; and... recovery period and/or a more accelerated depreciation method) for which the depreciation allowance for the... applicable depreciation method, recovery period, and convention for the assets in the account....

  1. 7 CFR 400.168 - Obligations of participating insurance company.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Obligations of participating insurance company. 400... participating insurance company. The Agreement will include the following among the obligations of the Company. (a) The Company shall follow all applicable Corporation procedures in its administration of the...

  2. FCJ-168 Do objects dream of an internet of things?

    Directory of Open Access Journals (Sweden)

    Teodor Mitew

    2014-12-01

    Full Text Available This paper develops the notion of heteroclite sociable objects in the context of the emerging internet of things, and examines their transformative effect for understandings of sociability and agency. The notion of sociable objects attempts to capture the heterogeneous identity-shift occurring when heretofore obscure and mute objects ranging from toasters to thermostats acquire the agencies to leave semantically distinct traces online, and detour their human interlocutors into an object-mediated entanglement. Using a toolkit drawn from actor network theory and object oriented ontology, the paper discusses several examples illustrating the case for new parameters of sociability, better suited to a materiality acquiring conversational and anticipatory agencies.

  3. 26 CFR 1.168(i)-4 - Changes in use.

    Science.gov (United States)

    2010-04-01

    ..., the applicable depreciation method beginning with the year of change is the straight line method; and... depreciation rate for 2004, the applicable depreciation method is the straight line method and the applicable... corresponds to the alternative depreciation system, the straight line......

  4. Dicty_cDB: SHD168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SJS Schistosoma japonicum cDNA, mRNA sequence. 56 0.001 1 CV682907 |CV682907.1 service...43_H06_sjs2-16-2B11-T3 SJS Schistosoma japonicum cDNA, mRNA sequence. 56 0.001 1 CV682854 |CV682854.1 service

  5. 26 CFR 1.168(i)-5 - Table of contents.

    Science.gov (United States)

    2010-04-01

    ... in the year of replacement. (i) In general. (ii) Applicable recovery period, depreciation method, and convention. (2) Effect of depreciation treatment of the replacement MACRS property by previous owners of the acquired property. (3) Recovery period and/or depreciation method of the properties are the same, or...

  6. 7 CFR 457.168 - Mustard crop insurance provisions.

    Science.gov (United States)

    2010-01-01

    ... (h) Failure of the irrigation water supply, if applicable, caused by a cause of loss specified in... percentage relationship to the base contract price (maximum price) offered for each type. For example, if you...

  7. 40 CFR 152.168 - Advertising of restricted use products.

    Science.gov (United States)

    2010-07-01

    ... advertised unless the advertisement contains a statement of its restricted use classification. (b) The... advertisement. The requirement may be satisfied with respect to broadcast or telephone advertising by inclusion... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Advertising of restricted use...

  8. 46 CFR 168.01-1 - Purpose of regulations.

    Science.gov (United States)

    2010-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS CIVILIAN NAUTICAL SCHOOL... this part is to set forth uniform minimum requirements for vessels, whether being navigated or not, which are used by or in connection with any civilian nautical school, except vessels of the Navy...

  9. Dicty_cDB: AFG168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available ia and immune antigen for suppressing growth of plasmodium. 76 7e-46 8 BD183625 |BD183625.1 Material for dia...gnosing malaria and immune antigen for suppressing growth of plasmodium. 76 7e-46

  10. 28 CFR 0.168 - Redelegation by Assistant Attorneys General.

    Science.gov (United States)

    2010-07-01

    ... OF JUSTICE Authority To Compromise and Close Civil Claims and Responsibility for Judgments, Fines... States Attorneys to compromise or close civil claims shall continue in effect until modified or...

  11. Dicty_cDB: AFN168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available IVFXNXMXXKKXXFKNXXKSSXKXXIXIXXGNSXLNNXSNNX*xxnpfgxxxff nxkxxxxxixxxixiixiiiiiiiitxixivxxi* Translated Amino ...Acid sequence (All Frames) Frame A: kkkysihtyiyiyiyi*nnik*afiilifillkkk--- ---lxkx*fxkixcxxkxqxlkxxqnqvxkxx*...xfxkxivf*ixkvixfkxxtllexxxf lixkxxxxx*xxxlx**x********xx*x*lxxyn Frame B: kkniqyihiytyiyiykii*nkhl*f*ylfy*kk--- ---xxx...nsfxkxnvxxkxnx*kxxkikxxxvnnxxxrx*xfk*xk**xlxxkpfwkxxif *xknxxxxxnxxxyxn...nxnnnnnnnnxxnxsyxxi Frame C: kkifntyiyihiyiyik*YKISIYNFNIYFIKKK--- ---XKXIVFXNXMXXKKXXFKNXXKSSXKXXIXIXXGNSXLNNXSNNX*xxnpfgxxx

  12. 168 Indigenous Language Implementation and Nation Building: The ...

    African Journals Online (AJOL)

    levels as a medium of instruction, the English language continues to dominate our ... schools in Ado-Ekiti, and the challenges of indigenous language policy implementation in. Nigerian .... Multilingualism is a purely socio-linguistic and socio- .... nation state if Nigerians, in addition to their mother tongue, learn to speak two of ...

  13. 168-IJBCS-Article-Dr I Mary Adekunle

    African Journals Online (AJOL)

    Dr Gatsing

    Relationships between blood lead, blood pressure, serum cholesterol and body ... Study examined the associations between blood – Pb, serum cholesterol, diastolic and, systolic blood pressures ... plasma high density lipoprotein cholesterol,.

  14. Dicty_cDB: SHB168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available cDNA clone PIMFW90 3' end, mRNA sequence. 48 0.31 1 DT364098 |DT364098.1 JGI_ANNN9278.rev ANNN Pimephales promelas... Whole (L) Pimephales promelas cDNA clone ANNN9278 3', mRNA sequence. 48 0....31 1 DT347978 |DT347978.1 JGI_CAAX10802.fwd CAAX Pimephales promelas testis 7-8 month adults, males and fema...les pooled (L) Pimephales promelas cDNA clone CAAX10802 5', mRNA sequence. 48 0.31 1 DT309975 |DT309975.1 JG...I_CAAX1517.fwd CAAX Pimephales promelas testis 7-8 month adults, males and female

  15. Dicty_cDB: SHI168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available N143252.1 WOUND1_15_C04.b1_A002 Wounded leaves Sorghum bicolor cDNA clone WOUND1_...15_C04_A002 3', mRNA sequence. 52 0.016 1 CN142951 |CN142951.1 WOUND1_13_G01.b1_A002 Wounded leaves Sorghum

  16. 76 FR 168 - Heavy Forged Hand Tools From China

    Science.gov (United States)

    2011-01-03

    ... following classes or kinds of heavy forged hand tools from China: (1) Axes and adzes, (2) bars and wedges... four Domestic Like Products: (1) Axes, adzes, and hewing tools, other than machetes, with or without... Industries: (1) Domestic producers of axes, adzes and hewing tools, other than machetes, with or...

  17. Dicty_cDB: VSD168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available tmlw*hvlfnftk*pilfn*flwkhkclwsssi m*wcslfhs**stfwlw*ifkslqkw*mc*spnl*cwsshvg*trcwyddy*citnylsr shwwiimwle*sf...ftcfsryyriclwlqlsktmlw*hvlfnftk*pilfn*flwkhkclwsssim *wcslfhs**stfwlw*ifkslqkw*mc*spnl*cwsshvg*trcwyddy*citnylsrs hwwii

  18. Dicty_cDB: SSK168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available A sequence update 1998.11.17 Translated Amino Acid sequence xsyqffxnyfyyylllaininililkikf*f*flkkkkkklkkkkekq...SCKX***********kiinsrninsyqffqnmri fffk*inpxfl*ini Translated Amino Acid sequence (All Frames) Frame A: xsyqffxnyfyyylllaini

  19. 21 CFR 168.121 - Dried glucose sirup.

    Science.gov (United States)

    2010-04-01

    ... HUMAN CONSUMPTION SWEETENERS AND TABLE SIRUPS Requirements for Specific Standardized Sweeteners and... from sorghum grain, the alternative name of the food is “Dried sorghum grain sirup” or “Sorghum...

  20. Modulation of Rhamm (CD168) for selective adipose tissue development

    Energy Technology Data Exchange (ETDEWEB)

    Turley, Eva A; Bissell, Mina J

    2014-05-06

    Herein is described the methods and compositions for modulation of Rhamm, also known as CD 186, and its effects on wound repair, muscle differentiation, bone density and adipogeneisis through its ability to regulate mesenchymal stem cell differentiation. Compositions and methods are provided for blocking Rhamm function for selectively increasing subcutaneous, but not, visceral fat. Compositions and methods for modulating Rhamm in wound repair are also described.

  1. Dicty_cDB: VSF168 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available nyrnwvlcl*hhltkvlni* myyydld*yh*swknhqriysnlvslvkimivfkeievekfvrpanikh*qlknthynpq kslnnyfnhnyhnqnnnniiiiiiiiilflesikh...nyfnhnyhnqnnnniiiiiiiiilflesikhrlflhkggvfnvglshivlyikslt vyhpknq*lfsnkl Homology

  2. 26 CFR 1.168(i)-2 - Lease term.

    Science.gov (United States)

    2010-04-01

    ... for such additional period. (f) Example. The following example illustrates the principles of this section. The example does not address common law doctrines or other authorities that may apply to cause an... taxable corporation, and Y, a foreign airline whose income is not subject to United States taxation, enter...

  3. Crystal structure of a new variety of lead dodecaborate Pb{sub 6}(Li{sub 0.65}Na{sub 0.19})[B{sub 12}O{sub 24}]I{sub 0.84} {center_dot} 0.168H{sub 2}O and its comparison with beryl and cordierite

    Energy Technology Data Exchange (ETDEWEB)

    Belokoneva, E. L., E-mail: elbel@geol.msu.ru; Derkach, I. K.; Dimitrova, O. V. [Moscow State University, Faculty of Geology (Russian Federation)

    2013-05-15

    Crystals of a new representative of ring-radical dodecaborates Pb{sub 6}(Li{sub 0.65}Na{sub 0.19})[B{sub 12}O{sub 24}]I{sub 0.84} {center_dot} 0.168H{sub 2}O, space group R3bar m , are obtained under hydrothermal conditions. The structure is determined with-out preliminary knowledge of the chemical formula. It is close to that of the Pb{sub 6}[B{sub 12}O{sub 24}] {center_dot} H{sub 2}O dodecaborate studied earlier, but unlike the latter structure it contains admixtures of iodide anion, lithium cation, and water molecule, which incompletely populate positions in channels. The formation of the second variety, which brings to light ion-exchange properties of the crystals, is due to mineralizing ions available in the concen-trated solution in the course of crystallization. The new compound is compared with beryl and cordierite, which have close structures with channels capable of capturing various groups. Structures of synthetic Na and Ag dodecaborates with analogous but distorted ring dodecaborate radicals are discussed.

  4. Luminescence of divalent europium activated spinels synthesized by combustion and the enhanced afterglow by dysprosium incorporation

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Haoyi, E-mail: manofchina@gmail.com; Jin, Yahong

    2016-05-01

    Herein we report a luminescent phenomenon of Eu{sup 2+} in the spinel MgAl{sub 2}O{sub 4} and ZnAl{sub 2}O{sub 4} samples which are successfully synthesized via a combustion method. The XRD shows cubic spinel structure is obtained from the prepared samples. The mean crystal sizes estimated from XRD data are 30 and 10 nm for MgAl{sub 2}O{sub 4} and ZnAl{sub 2}O{sub 4} respectively, and the large grain particles are the agglomeration of crystallites. The Eu{sup 2+} ions show a blue emission at around 480 nm and an afterglow phenomenon is observed after the removal of excitation. The afterglow spectrum of MgAl{sub 2}O{sub 4}: Eu{sup 2+}, Dy{sup 3+} shows two emissions at 480 and 520 nm while only one at 480 nm is observed in ZnAl{sub 2}O{sub 4}: Eu{sup 2+}, Dy{sup 3+}. The afterglow intensity and the persisting duration can be substantially enhanced by the Dy{sup 3+} incorporation because the trapping ability of the electron traps is reinforced. This is confirmed by the TL curves of the samples.

  5. Energy level decay and excited state absorption processes in dysprosium-doped fluoride glass

    Science.gov (United States)

    Gomes, Laércio; Librantz, André Felipe Henriques; Jackson, Stuart D.

    2010-03-01

    The primary excited state decay processes relating to the H613/2→H615/2˜3 μm laser transition in singly Dy3+-doped fluoride (ZBLAN) glass have been investigated in detail using time-resolved fluorescence spectroscopy. Selective laser excitation of the F69/2, H67/2 energy levels at 1125 nm and F611/2, H69/2 energy levels at 1358 nm established that the energy levels above the H611/2 level, excluding the F49/2 level, are entirely quenched by multiphonon emission in ZBLAN glass. The H611/2 and H613/2 energy levels emit luminescence with peaks at ˜1700 and ˜2880 nm, respectively, but at low quantum (luminescence) efficiencies. The quantum efficiency of the H611/2 level and H613/2 level is ˜9×10-5 and ˜1.3×10-2, respectively, for [Dy3+]=0.5 mol % based on calculations of the radiative lifetimes using the Judd-Ofelt theory. Excited state absorption (ESA) was detected by monitoring the rise time of the 1700 nm luminescence after tuning the probe wavelength across the spectral range from 1100 to 1400 nm. As a result of nonradiative decay of the higher excited states, ESA contributes to the heating of ˜3 μm fiber lasers based on Dy3+-doped fluoride glass. For [Dy3+] up to 4 mol %, we found no evidence of energy transfer processes between Dy3+ ions that influence the decay characteristics of the H611/2 and H613/2 energy levels.

  6. A naproxen complex of dysprosium intercalates into calf thymus DNA base pairs

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Mengsi; Jin, Jianhua; Xu, Guiqing [School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang 453007 (China); Cui, Fengling, E-mail: fenglingcui@hotmail.com [School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang 453007 (China); Luo, Hongxia [Department of Chemistry, Renmin University of China, Beijing 100872 (China)

    2014-01-15

    Highlights: • Binding mode to ctDNA was studied by various methods. • Intercalation is the most possible binding mode. • Dynamic and static quenching occurred simultaneously. • Hydrophobic force played a major role. • Binding characteristic of rare earth complexes to DNA are dependent on the element. - Abstract: The binding mode and mechanism of dysprosium–naproxen complex (Dy–NAP) with calf thymus deoxyribonucleic acid (ctDNA) were studied using UV–vis and fluorescence spectra in physiological buffer (pH 7.4). The results showed that more than one type of quenching process occurred and the binding mode between Dy–NAP with ctDNA might be intercalation. In addition, ionic strength, iodide quenching and fluorescence polarization experiments corroborated the intercalation binding mode between Dy–NAP and ctDNA. The calculated thermodynamic parameters ΔG, ΔH and ΔS at different temperature demonstrated that hydrophobic interaction force played a major role in the binding process.

  7. Connecting mononuclear dysprosium single-molecule magnets to form dinuclear complexes via in situ ligand oxidation.

    Science.gov (United States)

    Yutronkie, Nathan J; Kühne, Irina A; Korobkov, Ilia; Brusso, Jaclyn L; Murugesu, Muralee

    2016-01-14

    A Dy2 complex, exhibiting SMM behaviour, and its Y analogue were prepared via in situ oxidation of Py2TTA, a pincer type ligand, followed by dimerisation. This unique metal complexation and subsequent dimerization were followed by solution NMR studies.

  8. A Linear Tetranuclear Dysprosium(III) Compound Showing Single-Molecule Magnet Behavior

    Energy Technology Data Exchange (ETDEWEB)

    Ke, Hongshan; Xu, Gong Feng; Guo, Yun-Nan; Gamez, Patrick; Beavers, Christine M; Teat, Simon J; Tang, Jinkui

    2010-04-20

    Although magnetic measurements reveal a single-relaxation time for a linear tetranuclear Dy(III) compound, the wide distribution of the relaxation time observed clearly suggests the presence of two slightly different anisotropic centres, therefore opening new avenues for investigating the relaxation dynamics of lanthanide aggregates.

  9. A Novel (4,6)-Connected Net Based on Dysprosium Benzenedicarboxylate, [Dy(OAc)(BDC)]n

    Institute of Scientific and Technical Information of China (English)

    ZHANG Lei; LI Zhao-Ji; QIN Ye-Yan; CHENG Jian-Kai; YAO Yuan-Gen

    2008-01-01

    A new lanthanide coordination polymer, [Dy(OAc)(BDC)]n 1 (OAc= acetate, BDC = 1,4-benzenediacarboxylate), has been synthesized under hydrothermal conditions. Single-crystal X-ray diffraction analysis reveals that complex 1 has infinite zigzag Dy-OAc chains, which are further connected by BDC to form a 3D metal-organic framework. According to topology analysis, this framework can be characterized as (4,6)-connected (3.4.54)(32.4.56.66) net that has never been reported before. Crystal structure for 1: space group Pbca, a = 13.314(3), b = 8.0269(18), c = 20.275(5) A, V = 2166.8(9) A3, C10H7O6Dy, Mr= 385.66, Z = 8, Dc = 2.364 g/cm3, μ = 6.910 mm-1, F(000) = 1448, the final R = 0.0181 and wR = 0.0520.

  10. Photoluminescence and thermoluminescence properties of tricalcium phosphate phosphors doped with dysprosium and europium

    Indian Academy of Sciences (India)

    K Madhukumar; H K Varma; Manoj Komath; T S Elias; V Padmanabhan; C M K Nair

    2007-10-01

    The suitability of calcium phosphate crystals for thermoluminescence dosimetry (TLD) applications is investigated, owing to their equivalence to bone mineral. The and phases of tricalcium phosphate (TCP) were synthesized through wet precipitation and high temperature solid state routes and doped with Dy and Eu. The photoluminescence and thermoluminescence studies of the phosphors have been carried out. The TL properties were found to be highly dependent on the method of preparation of the material. Eu doping gave good PL emission, whereas Dy doping was more efficient in TL emission. -TCP was found to be less TL sensitive than -TCP, yet it was identified as a better phosphor material owing to its better fading characteristics. The dependence of TL of -TCP : Dy on the energy and dose of radiation, and on the doping concentration were studied. The TL intensity was observed to fade exponentially during a storage period of 20 days, but it stabilized at 70% of the initial value after 30 days. The optimum doping concentration was found to be 0.5 mol%.

  11. Extraction liquide-solide de Dysprosium(III) par le charbon actif ferromagnétique

    OpenAIRE

    khiri, khaira

    2014-01-01

    L’extraction liquide-solide de Dy(III) a été faite par le charbon actif ferromagnétique, dans un milieu nitré. L’effet de pH initial, concentration initial en ion Dy(III), le temps de contact, la force ionique, la température, la masse et l’élution ont été étudiés. La capacité de sorption augmente avec l’augmentation de la concentration initiale en Dy(III), le pH et la température. L’isotherme de Freundlich décrit mieux le processus d’extraction, ainsi que le modèle cinétique de p...

  12. Geometric and electronic structure of dysprosium thin films on tungsten surfaces Structural and magnetic properties

    CERN Document Server

    Moslemzadeh, N

    2001-01-01

    The rare earth thin films are frequently the focus of investigators due to their unusual structural and magnetic properties. Despite the potential interest of Dy/W systems to the surface/rare earth community, they have been little studied. This study is the first try of growing Dy on W(100) and W(112) and W(110) in which almost a complete set of information about film morphology and electronic structure of the surface and interface have been achieved. A set of different experiments have been done for this purpose including LEED, XPS, UPS (with synchrotron radiation) and STM. The growth modes of Dy on different W substrates (W(100), W(112) and W(110)) at RT and at elevated temperatures have been determined by XPS of Dy 3d sub 3 sub / sub 2 and W 4f intensities. Crystallographic ordering and the epitaxial relationship between adsorbate Dy and different W substrates have been studied with LEED and the effect of annealing temperature on the resultant superstructures was investigated. As a complementary study to t...

  13. Cerium: an unlikely replacement of dysprosium in high performance Nd-Fe-B permanent magnets.

    Science.gov (United States)

    Pathak, Arjun K; Khan, Mahmud; Gschneidner, Karl A; McCallum, Ralph W; Zhou, Lin; Sun, Kewei; Dennis, Kevin W; Zhou, Chen; Pinkerton, Frederick E; Kramer, Matthew J; Pecharsky, Vitalij K

    2015-04-24

    Replacement of Dy and substitution of Nd in NdFeB-based permanent magnets by Ce, the most abundant and lowest cost rare earth element, is important because Dy and Nd are costly and critical rare earth elements. The Ce, Co co-doped alloys have excellent high-temperature magnetic properties with an intrinsic coercivity being the highest known for T ≥ 453 K.

  14. Studies on Preparation of Dysprosium - 165 Metallic Macroaggregates for the Treatment of Rheumatoid Arthritis

    Energy Technology Data Exchange (ETDEWEB)

    Park, Kyung Bae; Kim, Jae Rok [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    1994-07-15

    Irradiation of 20 mg of natural Dy(NO{sub 3})3 in a neutron flux of 2 X10{sup 13} n/cm{sup 2} sec for 4 hours gave 5.76 Ci of {sup 165}Dy (specific activity, 610 mCi/mg Dy) with high radionuclidic purity (>99.9%). {sup 165}Dy-MA was prepared in a quantitative yield by reacting the aqueous solution of {sup 165}Dy(NO{sub 3})3 with sodium borohydride solution in 0.2N NaOH. Coulter particle analyzer exhibited mean particle size of 2.6 mum (range 1 approx 6 mum). Even though the {sup 165}Dy-MA suspension in saline was stored at 37 .deg. C for 24 hours of autoclaved at 121 .deg. C for 30 minutes, there was no significant change in particle size and leakage problem indicating the prepared {sup 165}Dy-MA is sufficiently stable. In-vivo retention studies were carried out by administering {sup 165}Dy-MA into the knee joint space of normal rabbits. Gamma camera analysis showed high retention in joint space of normal rabbits. Gamma camera analysis showed high retention in joining space even at 24 hours after administration (>99.9%) The ease with which the{sup 165}Dy-MA can be made in the narrow size range and their high in vitro and vivo stability make them attractive agents for radiation synovectomy.

  15. Dysprosium sorption by polymeric composite bead: robust parametric optimization using Taguchi method.

    Science.gov (United States)

    Yadav, Kartikey K; Dasgupta, Kinshuk; Singh, Dhruva K; Varshney, Lalit; Singh, Harvinderpal

    2015-03-06

    Polyethersulfone-based beads encapsulating di-2-ethylhexyl phosphoric acid have been synthesized and evaluated for the recovery of rare earth values from the aqueous media. Percentage recovery and the sorption behavior of Dy(III) have been investigated under wide range of experimental parameters using these beads. Taguchi method utilizing L-18 orthogonal array has been adopted to identify the most influential process parameters responsible for higher degree of recovery with enhanced sorption of Dy(III) from chloride medium. Analysis of variance indicated that the feed concentration of Dy(III) is the most influential factor for equilibrium sorption capacity, whereas aqueous phase acidity influences the percentage recovery most. The presence of polyvinyl alcohol and multiwalled carbon nanotube modified the internal structure of the composite beads and resulted in uniform distribution of organic extractant inside polymeric matrix. The experiment performed under optimum process conditions as predicted by Taguchi method resulted in enhanced Dy(III) recovery and sorption capacity by polymeric beads with minimum standard deviation.

  16. Dysprosium(III)-diethylenetriaminepentaacetate complexes of aminocyclodextrins as chiral NMR shift reagents.

    Science.gov (United States)

    Wenzel, T J; Miles, R D; Zomlefer, K; Frederique, D E; Roan, M A; Troughton, J S; Pond, B V; Colby, A L

    2000-01-01

    A metal chelating ligand is bonded to alpha-, beta-, and gamma-cyclodextrin by the reaction of diethylenetraminepentaacetic dianhydride with the corresponding 6-mono- and 2-mono(amine)cyclodextrin. Adding Dy(III) to the cyclodextrin derivatives causes shifts in the (1)H-NMR spectra of substrates such as propranolol, tryptophan, aspartame, carbinoxamine, pheniramine, doxylamine, and 1-anilino-8-naphthalenesulfonate. The Dy(III)-induced shifts enhance the enantiomeric resolution in the NMR spectra of several substrates. Enhancements in enantiomeric resolution using cyclodextrin derivatives with the amine tether are compared to previously described compounds in which the chelating ligand is attached through an ethylenediamine tether. In general, the Dy(III) complex of the 6-beta-derivative with the amine tether is a more effective chiral resolving agent than the complex with the ethylenediamine tether. The opposite trend is observed with the 2-beta-derivatives. The presence of the chelating ligand in the 2-beta-derivative hinders certain substrates from entering the cavity. For cationic substrates, evidence suggests that a cooperative association involving inclusion in the cavity and association with the Dy(III) unit occurs. Enhancements in enantiomeric resolution in the spectrum of tryptophan are greater for the secondary alpha- and gamma-derivatives than the beta-derivative.

  17. The Separation of Dysprosium and Holmium for Production of n.c.a. Ho-166

    Energy Technology Data Exchange (ETDEWEB)

    Choi, K. H.; Kim, J. B.; Park, U. J.; Nam, S. S.; Jang, K. D.; Yoo, K. M. [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2015-10-15

    The uses of radiolanthanide series are increasing in these days because of target therapy which does not require surgery. Certain radiolanthanides is very useful since they have the ability of simultaneous diagnosis and therapeutic effect in nuclear medicine. But this conventional therapeutic method has often limited by specific activity which is important things to affect labeling yield such as radiommunoconjugation and peptide labeling. There are two approaches to produce radiolanthanide in nuclear reactor. One is direct method using (n, γ) reaction and the other is indirect method using (n, γ)β reaction. Among the radiolanthanides, Ho-166 can be produced with two methods. Some radiolanthanides show the good theranostic effect in that they have proper LET (Linear Energy Transfer) to induce apoptosis for cancer treatment and gamma ray to use as a tracer for cancer diagnosis. The aim of this project based on this view is to get the carrier free radioisotopes for applying the nuclear medicine.

  18. Thermal expansion in dysprosium tungstate Dy10W2O21

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The complex oxide Dy10W2O21 was synthesized by a solid-state reaction and isolated in cubic symmetry by an X-ray diffractometry (XRD) method. Differential scanning calorimetry (DSC) measurements show that the compound is thermodynamically stable. The intrinsic thermal expansion coefficients were determined by extra-power powder Xray diffractometry from room temperature to 1000 ℃: linear coefficient α = 1.07 × 10-5 ℃-1 and bulk coefficient β=3.20 × 10-5℃-1. Dilatometry was used to measure the extrinsic thermal expansion coefficient (9.2 × 10-6℃-1).

  19. Magnetic Properties of Some Gadolinium, Erbium, Dysprosium, Manganese Substituted Samarium-2 Cobalt-17 Intermetallic Compounds.

    Science.gov (United States)

    1979-08-01

    S K AREA B WORK UNIT NUMBERSElect ronic Materials Research Division 61102AUS Army Electronics Technology & Devices Laborator) 1-rrr~ -rrd2An47 02 031...permanent magnet materials having intrinsically temperature compensated magneti- zations. The properties investigated were saturation magnetization...that excellent temperature compensation could be achieved in these compounds in the teinper~ture (cont’d) ~‘ DD I ? ) 1Q3 L°’TI°M °’ INOV BI

  20. Recycling of waste Nd-Fe-B sintered magnets by doping with dysprosium hydride nanoparticles

    Institute of Scientific and Technical Information of China (English)

    刘卫强; 李超; ZAKOTNIK Miha; 岳明; 张东涛; 黄秀莲

    2015-01-01

    Recycling of waste sintered Nd-Fe-B permanent magnets by doping DyH3 nanoparticles was investigated. The effect of the DyH3 nanoparticles on the microstructure and magnetic properties of the recycled magnets was studied. As the DyH3 nanoparticles additive increased, the coercivity of recycled magnet increased gradually. The recycled magnets with DyH3 nanoparticle content be-tween 0.0 wt.% and 1.0 wt.% maintained the remanence (Br), but, with higher additions, theBr began to decrease rapidly. The best recycled magnet produced contained 1.0 wt.% of DyH3 nanoparticles when compared to the properties of the starting waste sintering magnet. TheHcj,Br and (BH)max values of 101.7%, 95.4%, and 88.58%, respectively, were recovered.

  1. Photo and cathodoluminescence characteristics of dysprosium doped yttrium oxide nanoparticles prepared by Polyol method

    Energy Technology Data Exchange (ETDEWEB)

    Balderas-Xicohténcatl, R., E-mail: rbalderas@fis.cinvestav.mx [Centro de Investigación y de Estudios Avanzados-IPN, Departamento de Física, Apdo, Postal 14-470, Del. Gustavo A. Madero, C.P. 07360, México, D.F. (Mexico); Martínez-Martínez, R. [Instituto de Física y Matemáticas, Universidad Tecnológica de la Mixteca, Carretera a Acatlima Km. 2.5, Huajuapan de León, Oaxaca 69000 (Mexico); Rivera-Alvarez, Z.; Santoyo-Salazar, J.; Falcony, C. [Centro de Investigación y de Estudios Avanzados-IPN, Departamento de Física, Apdo, Postal 14-470, Del. Gustavo A. Madero, C.P. 07360, México, D.F. (Mexico)

    2014-02-15

    The luminescent characteristics of Dy{sup 3+}-doped Y{sub 2}O{sub 3} nanopowders synthesized using the polyol method are reported. The Y{sub 2}O{sub 3} nanoparticles presented a cubic phase crystalline structure of Y{sub 2}O{sub 3} after an annealing treatment in oxygen ambient at temperatures above 600 °C. The averaged crystallite size determined from the X-ray diffraction peaks width was in the 20–32 nm range depending on the annealing temperature. Scanning and transmission electron microscopy studies indicate the formation of nanoparticle aggregates up to 175 nm in diameter. Photoluminescence and cathodoluminescence measurements show a predominant emission at 573 nm, which is attributed to the {sup 4}F{sub 9/2}→{sup 6}H{sub 13/2} of the Dy{sup 3+} ion. The luminescence emission dependence with the dopant concentration and post-annealing temperatures is discussed. -- Highlights: • Nanoparticles of Y{sub 2}O{sub 3}:Dy{sup 3+} have been successfully synthesized by the polyol method. • XRD shows a grain size from 20 to 32 nm which is in agreement with SEM and TEM. • Electronic micrographs indicate the formation agglomerates of ∼175 nm. • The method used in the synthesis is industrial scalable and a low cost. • CL emission is observed at naked eye.

  2. 168例药品不良反应事件分析%Analysis of Adverse Drug Reactions in 168 Cases

    Institute of Scientific and Technical Information of China (English)

    马勇

    2016-01-01

    Objective To analyze and evaluate the adverse drug reaction events, and promote the rational use of drugs. Methods reported adverse drug reactions to events, the use of mathematical principles respectively on source, taxonomy, the crowd, the drug distribution, frequency of varieties, results and correlations for statistical processing, according to and rational use of the relevant provisions on the administration of drugs, evaluation and analysis. Results adverse events in hospital more than out-patient;report to general based (75.60%);classifi-cation to skin reaction (30.95%); elderly (45.24%) than the other age group; antibacterial drugs account for the first (27.98%); of amoxicillin and clavulanate potassium frequency was the highest (12 times); adverse events results all of the cases were cured. Conclusion the adverse drug reaction is positively correlated with the number of drug use, rational use of drugs can effectively reduce and control the risk of drug use.%目的:分析评价药品不良反应事件,促进人们合理用药。方法将上报的药品不良反应事件,运用数学原理分别对来源、类型、分类、人群、药物分布、品种频次、处理结果以及相关性等进行统计处理,按照《药品不良反应报告和监测管理办法》及合理用药管理相关规定,进行评价分析。结果不良事件住院多于门诊;报告类型以一般为主(75.60%);分类以皮肤反应为主(30.95%);老年(45.24%)较其他年龄段多;抗菌药物占首位(27.98%);阿莫西林克拉维酸钾频次最高(12次);不良事件结果均为痊愈。结论药品不良反应与药品使用的多少成正相关,合理用药能够有效减少与控制用药风险。

  3. Characterization of high-temperature oxide films on dysprosium-doped Fe-20Cr alloys by electrochemical techniques

    Institute of Scientific and Technical Information of China (English)

    GUO Pingyi; ZENG Chaoliu; SHAO Yong; QIN Zeshang

    2012-01-01

    The oxidation propegies of Fe-20Cr,Fe-20Cr-0.2Dy and Fe-20Cr-1Dy alloys were studied using gravimetric and electrochemical techniques.The high-temperature oxide films of Dy-doped Fe-20Cr alloys were prepared in air at 900 ℃ for 24,48 and 100 h,respectively.The electrochemical experiment was performed by a three-electrode electrochemical cell and in 0.1 mol/L Na2SO4 aqueous solution.Proper models were built for describing electrochemical impedance spectroscopy of the different oxide layers and the spectra were interpreted in terms of a two-layer model of the films.The results revealed that the oxide films of Dy-doped Fe-20Cr alloys became compacter than that of undoped alloys and retained their good protective ability for a relatively long time.With increasing content of Dy,the protection of the oxide films slightly decreased.Mott-Schottky curves indicated that all the oxides were n-type semi-conductors,and the Nd value of oxide film on Fe-20Cr was much larger than that of Dy-doped Fe-20Cr alloys.The results of kinetic curves and SEM were in agreement with electrochemical impedance spectroscopy and Mott-Schottky data.

  4. Reexamination of Nuclear Shape Transitions in Gadolinium and Dysprosium Isotopes Chains by Using the Geometric Collective Model

    Directory of Open Access Journals (Sweden)

    Khalaf A. M.

    2014-01-01

    Full Text Available The critical points of potential energy surface (PES’s of the limits of nuclear struc- ture harmonic oscillator, axially symmetric rotor and deformed -soft and discussed in framework of the general geometric collective model (GCM. Also the shape phase transitions linking the three dynamical symmetries are studied taking into account only three parameters in the PES’s. The model is tested for the case of 238 92 U , which shows a more prolate behavior. The optimized model parameters have been adjusted by fit- ting procedure using a simulated search program in order to reproduce the experimental excitation energies in the ground state band up to 6 + and the two neutron separation energies.

  5. Critical Rare Earths, National Security, and U.S.-China Interactions: A Portfolio Approach to Dysprosium Policy Design

    Science.gov (United States)

    2015-01-01

    yttrium are often used for pigmentation for consumer products such as paint and sunglasses. REE-based lasers are used for cosmetic, epidermal, and... bacterial cell walls (Takahashi 2005). In acidic solutions, from an initial concentration of 100 micrograms of an REE mixture per liter, the bacteria...Logistics Agency Justification Book , Research, Development, Test, and Evaluation, Defense-Wide,” U.S. Department of Defense, Washington, DC: 2013

  6. Influence of dysprosium addition on the structural, morphological, electrical and magnetic properties of nano-crystalline W-type hexaferrites

    Indian Academy of Sciences (India)

    Ali-Sharbati; Javad-Mola Verdi Khani; G R Amiri; R Mousarezaei

    2015-02-01

    Dysporium (Dy)-substituted W-type barium hexaferrites were prepared by the citrate sol–gel-method. Crystalline structure, morphology, magnetic properties, DC resistivity and microwave absorption properties of BaNi2DyFe16−O27 ( = 0-0.9) were studied using X-ray diffraction, transmission electron microscope (TEM), vibrating sample magnetometer and vector network analyzer and sensitive source meter, respectively. Single-phase W-type barium hexaferrites, with a chemical composition of BaNi2DyFe16−O27 ( = 0-0.9), were formed by being heated at 1250°C for 4 h in air. The magnetic properties such as saturation magnetization (s), and coercivity (c) were calculated from hysteresis loops. Hysteresis loop measurements show that the coercivity values lie in the range of 530–560 Oe with increasing Dy content. It was also observed that magnetization decreases with the increase of Dy content. The DC resistivity was observed to increase from 0.83 × 107 to 6.92 × 107 cm with increasing Dy contents due to the unavailability of Fe3+ ions. Microwave absorption properties of hexaferrite (70 wt%)–acrylic resin (30 wt%) composites were measured by the standing-wave-ratio (SWR) method in the range from 12 to 20 GHz. For sample with = 0.6, a minimum reflection loss of −40 dB was obtained at 16.2 GHz for a layer of 1.7 mm in thickness. Sample with = 0.9 had wide bandwidth absorption in the frequency range of 13.5–18 GHz with reflection losses less than −15 dB. Meanwhile the minimum reflection point shifts toward higher frequency with the increase of Dy content.

  7. L-Shell Ionization Cross Section Measurements of Dysprosium and Samarium by Low-Energy Electron Impact

    Institute of Scientific and Technical Information of China (English)

    GOU Cheng-Jun; WU Zhang-Wen; YANG Dai-Lun; HE Fu-Qing; PENG Xiu-Feng; AN Zhu; LUO Zheng-Ming

    2005-01-01

    @@ The Lα, Lβ and Lγ x-ray production cross sections of Dy and Sm by electron impact are measured at energies from near threshold to tens of keV. In the experiments, thin targets with thick substrates are used. Meanwhile,the electron transport bipartition model is used to eliminate the influence of electrons reflected from the thick substrates on measurements. The measured x-ray production cross sections are also compared with the theoretical predictions by Gryzinski and McGuire.

  8. Generation of White Light from Dysprosium-Doped Strontium Aluminate Phosphor by a Solid-State Reaction Method

    Science.gov (United States)

    Sahu, Ishwar Prasad; Bisen, D. P.; Brahme, N.; Tamrakar, Raunak Kumar

    2016-04-01

    A single-host lattice, white light-emitting SrAl2O4:Dy3+ phosphor was synthesized by a solid-state reaction method. The crystal structure of prepared SrAl2O4:Dy3+ phosphor was in a monoclinic phase with space group P21. The chemical composition of the sintered SrAl2O4:Dy3+ phosphor was confirmed by the energy dispersive x-ray spectroscopy technique. Under ultra-violet excitation, the characteristic emissions of Dy3+ are peaking at 475 nm, 573 nm and 660 nm, originating from the transitions of 4F9/2 → 6H15/2, 4F9/2 →&!nbsp; 6H13/2 and 4F9/2 → 6H11/2 in the 4f9 configuration of Dy3+ ions. Commission International de I'Eclairage color coordinates of SrAl2O4:Dy3+ are suitable for white light-emitting phosphor. In order to investigate the suitability of the samples as white color light sources for industrial uses, correlated color temperature (CCT) and color rendering index (CRI) values were calculated. Values of CCT and CRI were found well within the defined acceptable range. Mechanoluminescence (ML) intensity of SrAl2O4:Dy3+ phosphor increased linearly with increasing impact velocity of the moving piston. Thus, the present investigation indicates piezo-electricity was responsible for producing ML in sintered SrAl2O4:Dy3+ phosphor. Decay rates of the exponential decaying period of the ML curves do not change significantly with impact velocity. The photoluminescence and ML results suggest that the synthesized SrAl2O4:Dy3+ phosphor was useful for the white light-emitting diodes and stress sensor respectively.

  9. Significant enhancement of energy barriers in dinuclear dysprosium single-molecule magnets through electron-withdrawing effects.

    Science.gov (United States)

    Habib, Fatemah; Brunet, Gabriel; Vieru, Veacheslav; Korobkov, Ilia; Chibotaru, Liviu F; Murugesu, Muralee

    2013-09-11

    The effect of electron-withdrawing ligands on the energy barriers of Single-Molecule Magnets (SMMs) is investigated. By introducing highly electron-withdrawing atoms on targeted ligands, the energy barrier was significantly enhanced. The structural and magnetic properties of five novel SMMs based on a dinuclear {Dy2} phenoxo-bridged motif are explored and compared with a previously studied {Dy2} SMM (1). All complexes share the formula [Dy2(valdien)2(L)2]·solvent, where H2valdien = N1,N3-bis(3-methoxysalicylidene) diethylenetriamine, the terminal ligand L = NO3(-) (1), CH3COO(-) (2), ClCH2COO(-) (3), Cl2CHCOO(-) (4), CH3COCHCOCH3(-) (5), CF3COCHCOCF3(-) (6), and solvent = 0.5 MeOH (4), 2 CH2Cl2 (5). Systematic increase of the barrier was observed for all complexes with the most drastic increase seen in 6 when the acac ligand of 5 was fluorinated resulting in a 7-fold enhancement of the anisotropic barrier. Ab initio calculations reveal more axial g tensors as well as higher energy first excited Kramers doublets in 4 and 6 leading to higher energy barriers for those complexes.

  10. Slow Magnetic Relaxation Observed in Dysprosium Compounds Containing Unsupported Near-Linear Hydroxo- and Fluoro-Bridges.

    Science.gov (United States)

    Brunet, Gabriel; Habib, Fatemah; Korobkov, Ilia; Murugesu, Muralee

    2015-07-06

    The encapsulating N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) ligand was employed to isolate two novel Dy(III) compounds which contain rare bridging pathways for lanthanide systems. Compound 1, [Na2Dy(III)2(valdien)2(μ-OH)(dbm)2(H2O)2][Na2Dy(III)2(valdien)2(μ-OH)(NO3)2(dbm)2], where dbm(-) is dibenzoylmethanido, and compound 2, [Na3Dy(III)2(valdien)2(μ-F)(μ3-F)2(Cl)2(MeOH)2]n·0.5(MeOH)·(H2O), both exhibit linear lone hydroxo- and fluoro-bridges, respectively, between the metal centers. The unit cell of 1 comprises two discrete dinuclear molecules, which differ slightly, forming a cation-anion pair, while 2 forms a coordination polymer. The magnetic investigations indicate that both compounds display ferromagnetic coupling between the Dy(III) ions. Magnetic susceptibility measurements in the temperature range 1.8-300 K reveal that the Dy(III) ions in 1 are weakly coupled, resulting in a mononuclear single-molecule magnet-like behavior under an applied field. In the case of 2, the stronger coupling arising from the fluoride-bridge, leads to zero-field single-molecule magnet (SMM) behavior with a non-negligible anisotropy barrier (Ueff) of 42 K.

  11. Effect of Ligand Field Tuning on the SMM Behavior for Three Related Alkoxide-Bridged Dysprosium Dimers.

    Science.gov (United States)

    Peng, Yan; Mereacre, Valeriu; Baniodeh, Amer; Lan, Yanhua; Schlageter, Martin; Kostakis, George E; Powell, Annie K

    2016-01-04

    The synthesis and characterization of three Dy2 compounds, [Dy2(HL1)2(NO3)4] (1), [Dy2(L2)2(NO3)4] (2), and [Dy2(HL3)2(NO3)4] (3), formed using related tripodal ligands with a central tertiary amine bearing picolyl and alkoxy arms, 2-[(2-hydroxy-ethyl)-pyridin-2-ylmethylamino]-ethanol (H2L1), 2-(bis-pyridin-2-ylmethylamino)-ethanol (HL2), and 2-(bis-pyridin-2-ylmethylamino)-propane-1,3-diol (H2L3), are reported. The compounds are rare examples of alkoxide-bridged {Dy2} complexes and display capped square antiprism coordination geometry around each Dy(III) ion. Changes in the ligand field environment around the Dy(III) ions brought about through variations in the ligand donors can be gauged from the magnetic properties, with compounds 1 and 2 showing antiparallel coupling between the Dy(III) ions and 3 showing parallel coupling. Furthermore, slow relaxation of the magnetization typical of SMM behavior could be observed for compounds 2 and 3, suggesting that small variations in the ligand field can have a significant influence on the slow relaxation processes responsible for SMM behavior of Dy(III)-based systems.

  12. Effects of magnetic annealing on structure and multiferroic properties of pure and dysprosium substituted BiFeO 3

    KAUST Repository

    Zhang, Shuxia

    2012-07-01

    In this work, the effects of magnetic annealing on crystal structure and multiferroic properties of BiFeO 3 and Bi 0.85Dy 0.15FeO 3 have been investigated. It is found that the X-ray diffraction patterns of pure BiFeO 3 samples are obviously broadened after magnetic annealing, whereas those of Bi 0.85Dy 0.15FeO 3 samples are almost unchanged. Magnetic field annealing did not affect the magnetic properties of these two kinds of samples much. However, ferroelectric properties of the two materials exhibited different behaviors after magnetic field annealing. For pure BiFeO 3 samples, the remnant polarizations (P r) are suppressed; in contrast, for Bi 0.85Dy 0.15FeO 3 samples, P r is greatly enhanced. Possible mechanisms for the effects of magnetic field annealing have been discussed. © 2012 Elsevier B.V. All rights reserved.

  13. Dielectric relaxation in double potassium yttrium orthophosphate K 3Y(PO 4) 2 doped by praseodymium and dysprosium ions

    Science.gov (United States)

    Szulia, S.; Kosmowska, M.; Kołodziej, H. A.; Mizer, D.; Czupińska, G.

    2011-12-01

    We report the paper presents the results of electric properties of double potassium yttrium orthophosphates doped by lanthanide ions K 3Y( 1-x)Ln x(PO 4) 2 ( x = 0.01, 0.05, Ln = Pr 3+, Dy 3+). Electric permittivity and dielectric loss measurements have been performed on polycrystalline samples in the temperature range -50-120 °C and frequency range 1 kHz-1 MHz by means of HP 4282A impedance meter. The frequency and temperature dependence of electric properties were analyzed by theoretical models of dielectric relaxation in order to obtain information abut molecular dynamic of our solids in external electric field.

  14. Dilution-induced slow magnetic relaxation and anomalous hysteresis in trigonal prismatic dysprosium(III) and uranium(III) complexes.

    Science.gov (United States)

    Meihaus, Katie R; Rinehart, Jeffrey D; Long, Jeffrey R

    2011-09-05

    Magnetically dilute samples of complexes Dy(H(2)BPz(Me2)(2))(3) (1) and U(H(2)BPz(2))(3) (3) were prepared through cocrystallization with diamagnetic Y(H(2)BPz(Me2)(2))(3) (2) and Y(H(2)BPz(2))(3). Alternating current (ac) susceptibility measurements performed on these samples reveal magnetic relaxation behavior drastically different from their concentrated counterparts. For concentrated 1, slow magnetic relaxation is not observed under zero or applied dc fields of several hundred Oersteds. However, a 1:65 (Dy:Y) molar dilution results in a nonzero out-of-phase component to the magnetic susceptibility under zero applied dc field, characteristic of a single-molecule magnet. The highest dilution of 3 (1:90, U:Y) yields a relaxation barrier U(eff) = 16 cm(-1), double that of the concentrated sample. These combined results highlight the impact of intermolecular interactions in mononuclear single-molecule magnets possessing a highly anisotropic metal center. Finally, dilution elucidates the previously observed secondary relaxation process for concentrated 3. This process is slowed down drastically upon a 1:1 molar dilution, leading to butterfly magnetic hysteresis at temperatures as high as 3 K. The disappearance of this process for higher dilutions reveals it to be relaxation dictated by short-range intermolecular interactions, and it stands as the first direct example of an intermolecular relaxation process competing with single-molecule-based slow magnetic relaxation.

  15. Challenging lanthanide relaxation theory: erbium and thulium complexes that show NMR relaxation rates faster than dysprosium and terbium analogues.

    Science.gov (United States)

    Funk, Alexander M; Harvey, Peter; Finney, Katie-Louise N A; Fox, Mark A; Kenwright, Alan M; Rogers, Nicola J; Senanayake, P Kanthi; Parker, David

    2015-07-07

    Measurements of the proton NMR paramagnetic relaxation rates for several series of isostructural lanthanide(III) complexes have been performed in aqueous solution over the field range 1.0 to 16.5 Tesla. The field dependence has been modeled using Bloch-Redfield-Wangsness theory, allowing values for the electronic relaxation time, Tle and the magnetic susceptibility, μeff, to be estimated. Anomalous relaxation rate profiles were obtained, notably for erbium and thulium complexes of low symmetry 8-coordinate aza-phosphinate complexes. Such behaviour challenges accepted theory and can be interpreted in terms of changes in Tle values that are a function of the transient ligand field induced by solvent collision and vary considerably between Ln(3+) ions, along with magnetic susceptibilities that deviate significantly from free-ion values.

  16. Distance determination from dysprosium induced relaxation enhancement: a case study on membrane-inserted WALP23 polypeptides

    NARCIS (Netherlands)

    Lueders, P.; Razzaghi, S.; Jäger, H.; Tschaggelar, R.; Hemminga, M.A.; Yulikov, M.; Jeschke, G.

    2013-01-01

    Membrane incorporated synthetic a-helical polypeptides labelled with Dy(III) chelate complexes and nitroxide radicals were studied by the inversion recovery (IR) technique and Dy(III)-nitroxide distances were obtained. A comparison of obtained distances with the previously reported Gd(III)-nitroxide

  17. Intrinsic Levanase Activity of Bacillus subtilis 168 Levansucrase (SacB.

    Directory of Open Access Journals (Sweden)

    Luz Méndez-Lorenzo

    Full Text Available Levansucrase catalyzes the synthesis of fructose polymers through the transfer of fructosyl units from sucrose to a growing fructan chain. Levanase activity of Bacillus subtilis levansucrase has been described since the very first publications dealing with the mechanism of levan synthesis. However, there is a lack of qualitative and quantitative evidence regarding the importance of the intrinsic levan hydrolysis of B. subtilis levansucrase and its role in the levan synthesis process. Particularly, little attention has been paid to the long-term hydrolysis products, including its participation in the final levan molecules distribution. Here, we explored the hydrolytic and transferase activity of the B. subtilis levansucrase (SacB when levans produced by the same enzyme are used as substrate. We found that levan is hydrolyzed through a first order exo-type mechanism, which is limited to a conversion extent of around 30% when all polymer molecules reach a structure no longer suitable to SacB hydrolysis. To characterize the reaction, Isothermal Titration Calorimetry (ITC was employed and the evolution of the hydrolysis products profile followed by HPLC, GPC and HPAEC-PAD. The ITC measurements revealed a second step, taking place at the end of the reaction, most probably resulting from disproportionation of accumulated fructo-oligosaccharides. As levanase, levansucrase may use levan as substrate and, through a fructosyl-enzyme complex, behave as a hydrolytic enzyme or as a transferase, as demonstrated when glucose and fructose are added as acceptors. These reactions result in a wide variety of oligosaccharides that are also suitable acceptors for fructo-oligosaccharide synthesis. Moreover, we demonstrate that SacB in the presence of levan and glucose, through blastose and sucrose synthesis, results in the same fructooligosaccharides profile as that observed in sucrose reactions. We conclude that SacB has an intrinsic levanase activity that contributes to the final levan profile in reactions with sucrose as substrate.

  18. 26 CFR 5c.168(f)(8)-4 - Minimum investment of lessor.

    Science.gov (United States)

    2010-04-01

    ...) INCOME TAX (CONTINUED) TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981 § 5c... personal liability incurred. Any tax benefits which the lessor derives from the leased property shall not...

  19. 26 CFR 1.168(i)-0 - Table of contents for the general asset account rules.

    Science.gov (United States)

    2010-04-01

    ... recovery period and/or depreciation method. (i) No effect on general asset account election. (ii) Asset is...) General rules. (ii) Special rules. (d) Determination of depreciation allowance. (1) In general. (2...) Source determined by allocation and apportionment of depreciation allowed. (ii) Formula for...

  20. 莫泰168 赢在错位%Motel: Wins by The Adjustment of Positions

    Institute of Scientific and Technical Information of China (English)

    昝慧昉

    2006-01-01

    为了与同行形成差异,莫泰更侧重于树立商务型经济酒店的定位。“我们不能简单的跟着他们跑,否则就会永远跟在他们后面。所以我们的定位要此他们定的微高一点,实际上就是去争夺三星级和四星级之间的客源。”

  1. 26 CFR 1.168(i)-6 - Like-kind exchanges and involuntary conversions.

    Science.gov (United States)

    2010-04-01

    ... straight line method. If, for example, the depreciation method of the replacement MACRS property is the straight line method, the applicable depreciation rate for the year of replacement is determined by using... depreciation method is the straight line method, the applicable depreciation......

  2. Programming portlets from JSR 168 to IBM WebSphere portal extensions

    CERN Document Server

    Bernal, Joey; Lynn, Ron; Marston, Cayce; Memon, Usman

    2012-01-01

    Portals have evolved from simple Web applications with multiple links to an enterprise application delivery platform that serves composite applications. In a world where organizations are gearing up with service-oriented architecture (SOA) strategies and re-working existing apps to fit the Web 2.0 programming model, portals are strategic infrastructure components on every CIO's radar. As companies move toward SOA, portlets become an even hotter topic. Portlets provide the user interface for these services. IBM's unwavering commitment to open standards such as Java Specification Request (JSR 16

  3. 40 CFR 168.22 - Advertising of unregistered pesticides, unregistered uses of registered pesticides and FIFRA...

    Science.gov (United States)

    2010-07-01

    .... EPA interprets these provisions as extending to advertisements in any advertising medium to which... reasonably likely to be understood by persons to whom the advertisement is addressed. For printed advertising... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Advertising of unregistered...

  4. The Compositional Effect of Rigorous Teacher Evaluation on Workforce Quality. Working Paper 168

    Science.gov (United States)

    Cullen, Julie Berry; Koedel, Cory; Parsons, Eric

    2016-01-01

    Improving public sector workforce quality is challenging in sectors such as education where worker productivity is difficult to assess and manager incentives are muted by political and bureaucratic constraints. In this paper, we study how providing information to principals about teacher effectiveness and encouraging them to use the information in…

  5. SU-E-J-168: Automated Pancreas Segmentation Based On Dynamic MRI

    Energy Technology Data Exchange (ETDEWEB)

    Gou, S; Rapacchi, S; Hu, P; Sheng, K [UCLA School of Medicine, Los Angeles, CA (United States)

    2014-06-01

    Purpose: MRI guided radiotherapy is particularly attractive for abdominal targets with low CT contrast. To fully utilize this modality for pancreas tracking, automated segmentation tools are needed. A hybrid gradient, region growth and shape constraint (hGReS) method to segment 2D upper abdominal dynamic MRI is developed for this purpose. Methods: 2D coronal dynamic MR images of 2 healthy volunteers were acquired with a frame rate of 5 f/second. The regions of interest (ROIs) included the liver, pancreas and stomach. The first frame was used as the source where the centers of the ROIs were annotated. These center locations were propagated to the next dynamic MRI frame. 4-neighborhood region transfer growth was performed from these initial seeds for rough segmentation. To improve the results, gradient, edge and shape constraints were applied to the ROIs before final refinement using morphological operations. Results from hGReS and 3 other automated segmentation methods using edge detection, region growth and level set were compared to manual contouring. Results: For the first patient, hGReS resulted in the organ segmentation accuracy as measure by the Dices index (0.77) for the pancreas. The accuracy was slightly superior to the level set method (0.72), and both are significantly more accurate than the edge detection (0.53) and region growth methods (0.42). For the second healthy volunteer, hGReS reliably segmented the pancreatic region, achieving a Dices index of 0.82, 0.92 and 0.93 for the pancreas, stomach and liver, respectively, comparing to manual segmentation. Motion trajectories derived from the hGReS, level set and manual segmentation methods showed high correlation to respiratory motion calculated using a lung blood vessel as the reference while the other two methods showed substantial motion tracking errors. hGReS was 10 times faster than level set. Conclusion: We have shown the feasibility of automated segmentation of the pancreas anatomy based on dynamic MRI.

  6. Yeast Interacting Proteins Database: YGL127C, YPR168W [Yeast Interacting Proteins Database

    Lifescience Database Archive (English)

    Full Text Available h this prey as bait (0) Literature on bait (YPD) 7 Literature on prey (YPD) 10 Literature shared by bait and prey 2 Literature...prey as prey Rows with this prey as prey (1) Rows with this prey as bait Rows wit

  7. National Center of Excellence for Energy Storage Technology 168.10

    Energy Technology Data Exchange (ETDEWEB)

    Guezennec, Yann

    2011-12-31

    This report documents the performance of the Ohio State University (OSU) and Edison Welding Institute (EWI) in the period from 10/1/2010 to 12/31/2012. The objective of the project is to establish a Center of Excellence that leverages the strengths of the partners to establish a unique capability to develop and transfer energy storage industries to establish a unique capability in the development and transfer of energy storage system technology through a fundamental understanding of battery electrical and thermal performance, damage and aging mechanisms, and through the development of reliable, high-speed processes for joining substrates in battery cell, module and pack assemblies with low manufacturing variability. During this period, the OSU activity focused on procuring the equipment, materials and supplies necessary to conduct the experiments planned in the statement of project objectives. In detail, multiple laboratory setups were developed to enable for characterizing the open-circuit potential of cathode and anode materials for Li-ion batteries, perform experiments on calorimetry, and finally built multiple cell and module battery cyclers to be able to perform aging campaign on a wide variety of automotive grade battery cells and small modules. This suite of equipment feeds directly into the development, calibration of battery models ranging from first principle electrochemical models to electro-thermal equivalent circuit models suitable for use in control and xEV vehicle simulations. In addition, it allows to develop and calibrate ‘aging’ models for Li-ion batteries that enable the development of diagnostics and prognostics tools to characterize and predict battery degradation from automotive usage under a wide array of environmental and usage scenarios. The objective of the EWI work scope is to develop improved processes for making metal-tometal joints in advanced battery cells and packs. It will focus on developing generic techniques for making functional (electrically conductive and mechanically robust) metal-to-metal joints between thin substrates. Joints with multiple layers and bimetallic constituents will be investigated. During the current period of performance, EWI has defined the test matrix to evaluate the application of different welding technologies (laser welding, ultrasonic welding, resistance welding) to specific components of battery cells and modules, such as foils-to-tabs, tabs-to-tabs, and tabs-to-bus bars. The test matrix also includes a range of substrates (aluminum 1145 and 1100, copper 110 and nickel 200 as substrates). Furthermore, a set of procedures was defined to perform mechanical and electrical testing of the samples, including metallography, and non-destructive evaluations. Both on the OSU and EWI, this project enabled to leverage very significant industrial collaborations with a wide array of companies ranging from battery manufacturers and pack integrator all the ways to Tier 1 automotive suppliers and OEMs during the period of exercise of the project, and in the future for years to come.

  8. 21 CFR 133.168 - Pasteurized blended cheese with fruits, vegetables, or meats.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Pasteurized blended cheese with fruits, vegetables... fruits, vegetables, or meats. (a) Pasteurized blended cheese with fruits, vegetables, or meats, or... vegetable; any properly prepared cooked or canned meat. (3) When the added fruits, vegetables, or meats...

  9. 75 FR 168 - Self-Regulatory Organizations; NYSE Arca, Inc.; Order Approving Proposed Rule Change Amending...

    Science.gov (United States)

    2010-01-04

    ... Commentary .01 to NYSE Arca Equities Rule 5.2(j)(3), the initial listing standards for Investment Company... Investment Company Units (``ICUs''), which are based both on U.S. indexes or portfolios, and international or... and manipulative acts and practices, promote just and equitable principles of trade,...

  10. 40 CFR 168.75 - Procedures for exporting unregistered pesticides-purchaser acknowledgement statements.

    Science.gov (United States)

    2010-07-01

    ... protection of humans from direct or dietary exposure. (c) Procedures. An exporter of an unregistered... acknowledgement statement requirement. Any changes to the registered product for export purposes must be...) Certain changes may be made to a product's labeling or packaging without affecting the registration...

  11. 33 CFR 110.168 - Hampton Roads, Virginia and adjacent waters (Datum: NAD 83).

    Science.gov (United States)

    2010-07-01

    ... Bay, Thimble Shoals Channel Anchorages. (i) Anchorage B . The waters bounded by a line connecting the... center located at: Latitude Longitude 36°58′54.9″ N 76°20′03.2″ W (viii) Anchorage H, Newport News Bar....7″ N 76°24′10.1″ W (4) James River Anchorages. (i) Anchorage I, Newport News. The waters bounded...

  12. 26 CFR 5c.168(f)(8)-6 - Qualified leased property.

    Science.gov (United States)

    2010-04-01

    ... is considered the owner of the property for Federal tax law purposes will be determined without... purposes of this subparagraph and paragraph (b)(3)(iii) of this section, the allocation principles... a foreign lessee, and is exempt from taxation, under sections 872 or 833, or if the income is...

  13. Influence of dysprosium substitution on magnetic and mechanical properties of high intrinsic coercivity Nd-Fe-B magnets prepared by double-alloy powder mixed method

    Institute of Scientific and Technical Information of China (English)

    胡志华; 瞿海锦; 马冬威; 罗成; 王会杰

    2016-01-01

    The double-alloy powder mixed method is very proper for developing new small-mass products by changing the composi-tion of sintered Nd-Fe-B magnets, and there is little research on this aspect. The variation on magnetic and mechanical properties of high intrinsic coercivity Nd-Fe-B magnets prepared by double-alloy powder mixed method was discussed, which is a method blend-ing two-type main phase alloy powders with different components. The results showed that the intrinsic coercivity and density of sin-tered Nd-Fe-B magnets increased gradually with the increase in Dy content, and the double-alloy powder mixed method could obtain high intrinsic coercivity Nd-Fe-B magnets with good crystallographic alignment and microstructure. The bending strength of sintered Nd-Fe-B magnets declined, and the Rockwell hardness of sintered Nd-Fe-B magnets first declined, and then increased with the in-crease in Dy content. The microstructure showed that there existed the phenomenon that the Dy element diffused into main phase dur-ing sintering process, and the distribution of Dy content in main phase had some variation in homogeneity as a result of incomplete reaction between the double-alloy powder types.

  14. Effect of dysprosium substitution on electrical properties of SrBi{sub 4}Ti{sub 4}O{sub 15}

    Energy Technology Data Exchange (ETDEWEB)

    Mamatha, B., E-mail: boinanemamatha@gmail.com; Sarah, P.

    2014-10-15

    SrBi{sub 4−x}Dy{sub x}Ti{sub 4}O{sub 15} (with x = 0.02, 0.04, 0.06 and 0.08) powders have been synthesized using the stoichiometric amounts of nitrates and oxides of the constituent materials through sol–gel method. The compound so formed is characterized using X-ray diffraction. The density and lattice parameters are calculated. The impedance and electrical conductivity properties are investigated. The imaginary part of impedance as a function of frequency shows Debye like relaxation. Impedance data presented in the Nyquist plot which is used to identify an equivalent circuit and the fundamental circuit parameters are determined at different temperatures. The results of bulk a.c. conductivity as a function of frequency at different temperatures are presented. The dielectric behavior was investigated. Permittivity was calculated based on the relaxation frequency using an alternative approach based on the variation of the imaginary impedance component as a function of reciprocal angular frequency. The frequency dependence of real and imaginary permittivities was also investigated. - Highlights: • SrBi{sub 4−x}Dy{sub x}Ti{sub 4}O{sub 15} (x = 0.02, 0.04, 0.06 and 0.08) powders are produced by sol–gel method. Phase formation is confirmed by XRD analysis. • Frequency dependent imaginary part of impedance shows distribution of relaxation in system. • Broadness of Z″ peak shows distribution of relaxation frequency. • Increase in peak width at ½ maxima of Z″ with increase of temperature shows increase of relaxation frequency distribution. • Cole–Cole plots are resolved into two different circles, ascribed to different mechanisms of polarization and relaxation phenomena.

  15. Hexanuclear, heterometallic, Ni₃Ln₃ complexes possessing O-capped homo- and heterometallic structural subunits: SMM behavior of the dysprosium analogue.

    Science.gov (United States)

    Goura, Joydeb; Guillaume, Rogez; Rivière, Eric; Chandrasekhar, Vadapalli

    2014-08-04

    The reaction of hetero donor chelating mannich base ligand 6,6'-{(2-(dimethylamino)ethylazanediyl)bis(methylene)}bis(2-methoxy-4-methylphenol) with Ni(ClO4)2·6H2O and lanthanide(III) salts [Dy(III) (1); Tb(III) (2); Gd (III) (3); Ho(III) (4); and Er(III) (5)] in the presence of triethylamine and pivalic acid afforded a series of heterometallic hexanuclear Ni(II)-Ln(III) coordination compounds, [Ni3Ln3(μ3-O)(μ3-OH)3(L)3(μ-OOCCMe3)3]·(ClO4)·wCH3CN·xCH2Cl2·yCH3OH·zH2O [for 1, w = 8, x = 3, y = 0, z = 5.5; for 2, w = 0, x = 5, y = 0, z = 6.5; for 3, w = 15, x = 18, y = 3, z = 7.5; for 4, w = 15, x = 20, y = 6, z = 9.5; and for 5, w = 0, x = 3, y = 2, z = 3]. The molecular structure of these complexes reveals the presence of a monocationic hexanuclear derivative containing one perchlorate counteranion. The asymmetric unit of each of the hexanuclear derivatives comprises the dinuclear motif [NiLn(L)(μ3-O)(μ3-OH)(μ-Piv)]. The cation contains three interlinked O-capped clusters: one Ln(III)3O and three Ni(II)Ln(III)2O. Each of the lanthanide centers is eight- coordinated (distorted trigonal-dodecahedron), while the nickel centers are hexacoordinate (distorted octahedral). The study of the magnetic properties of all compounds are reported and suggests single molecule magnet behavior for the Dy(III) derivative (1).

  16. Two-dimensional dysprosium(III triiodate(V dihydrate, Dy(IO33(H2O·H2O

    Directory of Open Access Journals (Sweden)

    Laishun Qin

    2009-08-01

    Full Text Available During our research into novel nonlinear optical materials using 1,10-phenanthroline as an appending ligand on lanthanide iodates, crystals of an infinite layered DyIII iodate compound, Dy(IO33(H2O·H2O, were obtained under hydrothermal conditions. The DyIII cation has a dicapped trigonal prismatic coordination environment consisting of one water O atom and seven other O atoms from seven iodate anions. These iodate anions bridge the DyIII cations into a two-dimensional structure. Through O—H...O hydrogen bonds, all of these layers stack along [111], giving a supramolecular channel, with the solvent water molecules filling the voids.

  17. Two-dimensional dysprosium(III) triiodate(V) dihydrate, Dy(IO3)3(H2O)·H2O

    Science.gov (United States)

    Chai, Wenxiang; Song, Li; Shi, Hongsheng; Qin, Laishun; Shu, Kangying

    2009-01-01

    During our research into novel nonlinear optical materials using 1,10-phenanthroline as an appending ligand on lanthanide iodates, crystals of an infinite layered DyIII iodate compound, Dy(IO3)3(H2O)·H2O, were obtained under hydro­thermal conditions. The DyIII cation has a dicapped trigonal prismatic coordination environment consisting of one water O atom and seven other O atoms from seven iodate anions. These iodate anions bridge the DyIII cations into a two-dimensional structure. Through O—H⋯O hydrogen bonds, all of these layers stack along [111], giving a supra­molecular channel, with the solvent water mol­ecules filling the voids. PMID:21583297

  18. 吡罗昔康镝配合物的合成与表征%Synthesis and characterization of the complex of piroxicam and dysprosium

    Institute of Scientific and Technical Information of China (English)

    张艳军; 石俊; 孙体健; 徐隋意; 曹晓峰

    2009-01-01

    利用热乙醇搅拌法合成吡罗昔康和稀土金属镝的配合物,通过紫外光谱、红外光谱、元素分析、电导率、差热-热重等方法对其进行表征,最后确定其组成为Dy(pir)2C2H5OHCl3·2H2O.

  19. Multicolor photoluminescence and energy transfer properties of dysprosium and europium-doped Gd{sub 2}O{sub 3} phosphors

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Yanxia; Liu, Guixia, E-mail: liuguixia22@163.com; Wang, Jinxian; Dong, Xiangting; Yu, Wensheng

    2015-11-15

    In this study, a series of Gd{sub 2}O{sub 3}: Ln{sup 3+} (Ln = Dy, Eu) submicrospheres were successfully prepared by a hydrothermal method and a subsequent higher temperature pyrolysis. X-ray diffraction (XRD), Fourier transform infrared (FT-IR), field emission scanning electron microscope (FESEM), energy-dispersive X-ray spectrometer (EDS), photoluminescence (PL) spectra and vibrating sample magnetometer (VSM) were utilized to characterize the as-prepared samples. The precursor sample thoroughly decomposed into Gd{sub 2}O{sub 3} submicrospheres with a diameter of about 550 nm after calcination. Under UV excitation, the samples exhibit multicolor emissions including yellow-green, yellow, red as well as white, moreover, the Dy{sup 3+} ions acted as donors can transfer the energy to Eu{sup 3+} served as acceptors in Gd{sub 2}O{sub 3}: Dy{sup 3+}, Eu{sup 3+} system. The interaction between Dy{sup 3+} ions and Eu{sup 3+} ions is verified to be phonon-assisted electric quadrupole–quadrupole interaction. Multicolor luminescence including white light emission can be obtained through varying the content of Eu{sup 3+} or adopting different excitation wavelengths in Dy{sup 3+} and Eu{sup 3+} co-doped Gd{sub 2}O{sub 3} system. The energy transfer efficiency reaches 88.2% when the doped concentration of Eu{sup 3+} is 0.035. The CIE chromaticity diagram directly reveals the variability of the hue of the as-prepared samples. Besides, the as-prepared samples exhibit paramagnetic properties at room temperature. This type of color-tunable luminescence phosphors has promising applications in the fields of photoelectronic devices and biomedical science. - Graphical abstract: Tunable multicolor emissions and energy transfer properties of lanthanides (Ln{sup 3+}, Ln{sup 3+} = Dy{sup 3+}, Eu{sup 3+}) doped cubic Gd{sub 2}O{sub 3} submicrospheres prepared by hydrothermal method and a subsequent calcination. - Highlights: • The as-prepared samples can exhibit multicolor emissions. • Dy{sup 3+} transfer energy to Eu{sup 3+} in Dy{sup 3+} and Eu{sup 3+} co-doped Gd{sub 2}O{sub 3}. • The as-prepared phosphor has promising applications in the fields of photoelectronic devices and biomedical science.

  20. Emission from Divalent Dysprosium (Dy2+ )in Crystalline Strontium Tetraborate%晶态四硼酸锶中二价镝的发射

    Institute of Scientific and Technical Information of China (English)

    许武; Peterson; J; R

    2001-01-01

    Emission spectra from SrB4O7 doped with Dy2O3 and heated in air have been recorded at room temperature. A change in oxidation state from Dy3+ to Dy2+ was observed. Optimum production of Dy2+ ion occurs when the sample is heated in air at about 650℃. Two broad emission bands centered in the vicinity of 550 and 660nm have been observed from the sample under the excitation of 457.9nm. It is suggested that these bands are due to Dy2 + ion emission from the 5d band into the ground state 4f level (5I8). Several conditions promoting the reduction of Dy3+ion in this matrix are discussed. To aid the reduction of Dy3+ ion, we have also prepared SrB4O7 doped with Dy2O3 in Ar/H2 (4 % ) atmosphere and compared the optical characteristics of Dy2 + ion in these samples with those from the samples prepared in air. The range of g-element reducibility and stabilization in SrB4O7 has been extended from Tm2+[ E0 (Tm3+/Tm2+) = -2.3V] to Dy2+ [E0(Dy3+/Dy2 +) = -2.6V] in the present work; however, the limit of this facile reduction process has not been determined yet.%在室温下测量了在空气中灼烧掺杂Dy2O3的SrB4O7的发射光谱.观测到了由Dy3+到Dy2+氧化态的变化.经优化,当在空气中灼烧温度为650℃时为产生Dy2+的最佳温度.在457.9nm的激发下测出了两个峰位分别位于550和660nm的宽发射带.我们认为这两个宽发射带是由Dy2+离子由5d态向4f基态能级(5I8)跃迁产生的.讨论了几个有益于在这种基质中还原Dy3+离子的条件.为了实现Dy3+离子的还原,我们还在Ar/H2(4%)气氛中制备了Dy2O3掺杂的SrB4O7,比较了这种样品和在空气中所制备的样品的光学特性.本文还对标志SrB4O7还原性和稳定性的g-因子由Tm2+的[Eo(Tm3+/Tm2+=-2.3V]推导出Dy2+的[E0(Dy3+/Dy2+)=-2.6V],但对这种还原过程的局限性尚未确定.

  1. CCDC 1402057: Experimental Crystal Structure Determination : pentakis(tetra-n-butylammonium) tetrakis(mu-oxalato)-dodecachloro-tetranitrosyl-ethanol-tetra-ruthenium-dysprosium sesquihydrate

    KAUST Repository

    Kuhn, Paul-Steffen

    2015-01-01

    An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

  2. 农九师168团新生儿接种乙型肝炎疫苗的流行病学效果评价%Agricultural Ninth Division 168 Regiment Epidemiological Effect of Hepatitis B Vaccine in Infants

    Institute of Scientific and Technical Information of China (English)

    何兰芬; 戴立群

    2014-01-01

    Objective Epidemiological ef ect of hepatitis B vaccine immunization of newborns after evaluation.Methods Col ect the vaccinated population, each year new nursery inoculation of hepatitis B vaccine in children vaccinated children, col ected serum samples, detection of serum hepatitis B surface antigen (HBsAg), anti -HBs, and the results were compared with the early inoculation. Results The hepatitis B vaccine in infants after the inoculation, before carrying rate from 11. 82% to 0.38%, Conclusion To hepatitis B vaccine in infants is an ef ective means to prevent and control the infection of hepatitis B virus.%目的评价新生儿接种乙型肝炎疫苗后的流行病学效果。方法收集接种人群,每年新入托接种乙肝疫苗的儿童,收集接种儿童血清标本,检测血清中乙型肝炎表面抗原(HBsAg)、抗-HBs,并与接种初期的检测结果进行比较。结果新生儿接种乙型肝炎疫苗后,由接种前携带率由11.82%降至0.38%。结论给新生儿接种乙型肝炎疫苗是预防和控制乙型肝炎病毒感染的有效手段。

  3. 26 CFR 1.168(h)-1 - Like-kind exchanges involving tax-exempt use property.

    Science.gov (United States)

    2010-04-01

    ..., and using the same depreciation method and convention as that of, the related tax-exempt use property... $1 million basis in DA over the remaining recovery period of, and using the same depreciation method... depreciation method and convention. Z holds tax-exempt use property with a basis of $10,000, which must...

  4. Engineered Bacillus subtilis 168 produces L-malate by heterologous biosynthesis pathway construction and lactate dehydrogenase deletion.

    Science.gov (United States)

    Mu, Li; Wen, Jianping

    2013-01-01

    In the present work, Bacillus subtilis was engineered to produce L-malate. Initially, the study revealed that the slight fumarase activity under anaerobic conditions is extremely favourable for L-malate one-step fermentation accumulation. Subsequently, an efficient heterologous biosynthesis pathway formed by Escherichia coli phosphoenolpyruvate carboxylase and Saccharomyces cerevisiae malate dehydrogenase was introduced into B. subtilis, which led to 6.04 ± 0.19 mM L-malate production. Finally, the L-malate production was increased 1.5-fold to 9.18 ± 0.22 mM by the deletion of lactate dehydrogenase. Under two-stage fermentation conditions, the engineered B. subtilis produced up to 15.65 ± 0.13 mM L-malate, which was 86.3 % higher than that under anaerobic fermentation conditions. Though the L-malate production by the recombinant was low, this is the first attempt to produce L-malate in engineered B. subtilis and paves the way for further improving L-malate production in B. subtilis.

  5. AB168. Novel DYM compound heterozygous mutations in a Malaysian boy with Dyggve-Melchior-Clausen syndrome

    Science.gov (United States)

    Ong, Winnie Peitee; Md Haniffa, Muzhirah Aisha; Leong, Huey Yin; Chew, Hui Bein; Ch’ng, Gaik Siew; Ngu, Lock Hock; Patel, Nisha; Hashem, Mais Omar; Alkuraya, Fowzan Sami; Keng, Wee Teik

    2015-01-01

    Background Dyggve-Melchior-Clausen (DMC) syndrome and Smith-McCort Dysplasia (SMC) are rare, progressive, autosomal recessive skeletal dysplasias caused by mutations in the Dymeclin (DYM) gene, mapped to chromosome 18q21.1. These are allelic disorders and share many features including short stature, a barrel-shaped chest, platyspondyly, abnormalities of the epiphyses and metaphyses, and a distinctive lacy appearance of the iliac crest. The distinguishing feature is that individuals with DMC have intellectual disabilities whereas SMC is associated with normal intelligence. Case presentation We present a 6-year-old Malaysian boy, the elder of two children born to a non-consanguineous Chinese couple. He was a term baby but was small and short for gestational age at birth. He initially presented to the paediatric endocrinologist for concerns of short stature and was subsequently referred prior to the age of three for suspicion of mucopolysaccharidosis (MPS) from his vertebral radiological findings. Clinical evaluation revealed that he had short stature, microcephaly and prominent pectus carinatum. He had normal early developmental milestones but on follow-up, it became obvious he had learning difficulties with expressive speech delay. His skeletal radiographs showed platyspondyly with a double hump and anterior breaking, broad ribs, widened metacarpals, abnormally shaped femoral heads and lacy crests of the iliac wings. Molecular testing of the DYM gene identified novel compound heterozygous mutations—a deletion c.242_249del8 in exon 4 was inherited from his father and a single nucleotide duplication c.1917dupT in exon 17 was inherited from his mother. Both these mutations cause a frameshift and result in aberrant mRNA processing. The parents are therefore heterozygous carriers. Our patient was initially thought to have Smith-McCort dysplasia SMC but his diagnosis had since been revised to DMC when it became evident he had speech delay and was faltering with his learning from the age of four. This diagnosis would also seem to be more in keeping with his genotypic change. A formal psychometric assessment was planned to evaluate his intelligence more objectively. Conclusions We wish to highlight the phenotypic and radiological features of this rare entity and the role of molecular testing. It is important to remember that certain other disorders especially Morquio A (MPS type IVA) may mimic this condition on vertebral radiological changes. Diagnosis confirmation with finding the DYM mutations not only allows for accurate genetic counselling and prenatal testing, but also directs one to be vigilant for potential life-threatening complications in this disorder like atlanto-axial instability.

  6. Survey on risk factors for chronic diseases in college students - doi:10.5020/18061230.2007.p168

    Directory of Open Access Journals (Sweden)

    Vívian Saraiva Veras

    2012-01-01

    Full Text Available The study proposed to identify the risk factors for diabetes mellitus (DM, systemic arterial hypertension (HAS and cardiovascular diseases (DCV in college students of a private institution in the city of Fortaleza. Two hundred students joined in the study, being submitted to an evaluation survey, in which were obtained data on: sex, age, history of tobacco use, alcoholism, sedentariness and family antecedents of DM, HAS, hypercholesterolemia and ischemic event. Those that presented three or more risk factors for DM, HAS and DCV being then, directed for accomplishment of anthropometric evaluation, capillary glucose measure and measurement of arterial pressure. The sample consisted of 172 students (128F/44M. The results pointed out that 121 (70.3% of the students did not practice physical activities, 124 (72.1% of the subjects presented family antecedents for DM, 131 (76.2% for HAS, 104 (60.5% for hypercholesterolemia and 91 (52.9% for previous ischemic event, 43 (25% presented overweight and 10 (5.9% first-degree obesity, 30 (17.5% had arterial pressure ? 130/60 mmHg. The results indicate the need for educational programs in the studied institution aiming at health education and prevention of chronic diseases.

  7. Toxicity Bioassays for Ecological Risk Assessment in Arid and Semiarid Ecosystems. Reviews Environmental Contamination and Toxicology 168:43-98.

    Energy Technology Data Exchange (ETDEWEB)

    Markwiese, J.T.; Ryti, R.T.; Hooten, M.M.; Michael, D.I.; Hlohowskyj, I.

    2001-02-01

    This paper discusses current limitations for performing ecological risk assessments in dry environments (i.e., ecosystems that are characteristic of many DOE Facilities) and presents novel approaches to addressing ecological risk in such systems.

  8. Eesti NSV Ministrite Nõukogu 15. mai 1989. a. määruse nr. 168 osalise muutmise kohta

    Index Scriptorium Estoniae

    1990-01-01

    Nõukogude valuuta, välisvaluuta ning muude valuuta- ja teiste väärtuste välismaalt ja välismaale sisse- ja väljaveo, saatmise ja ülekandmise määrustiku" kinnitamise kohta. - Lisatud: NSV Liidu MN määrus "Nõukogude valuuta, välisvaluuta ning muude valuuta- ja teiste väärtuste välismaalt ja välismaale sisse- ja väljaveo, saatmise ja ülekandmise määrustikus" muudatuste tegemise kohta (13. dets. 1989 nr. 1108) ; NSVL MN määrus "MSV Liidu sisetarbijaturu kaitse ning Nõukogude valuuta ja tarbekaupade üle NSV Liidu riigipiiri toimetamisel kuritarvituste vältimise abinõude kohta" (7. dets. 1989 nr. 1093)

  9. Reference genes selection and relative expression analysis from Shiraia sp. SUPER-H168 productive of hypocrellin.

    Science.gov (United States)

    Deng, Huaxiang; Gao, Ruijie; Liao, Xiangru; Cai, Yujie

    2016-04-10

    Shiraia bambusicola is an essential pharmaceutical fungus due to its production of hypocrellin with antiviral, antidepressant, and antiretroviral properties. Based on suitable reference gene (RG) normalization, gene expression analysis enables the exploitation of significant genes relative to hypocrellin biosynthesis by quantitative real-time polymerase chain reaction. We selected and assessed nine candidate RGs in the presence and absence of hypocrellin biosynthesis using GeNorm and NormFinder algorithms. After stepwise exclusion of unstable genes, GeNorm analysis identified glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and cytochrome oxidase (CyO) as the most stable expression, while NormFinder determined 18S ribosomal RNA (18S rRNA) as the most appropriate candidate gene for normalization. Tubulin (Tub) was observed to be the least stable gene and should be avoided for relative expression analysis. We further analyzed relative expression levels of essential proteins correlative with hypocrellin biosynthesis, including polyketide synthase (PKS), O-methyltransferase (Omef), FAD/FMN-dependent oxidoreductase (FAD), and monooxygenase (Mono). Compared to PKS, Mono kept a similar expression pattern and simulated PKS expression, while FAD remained constantly expressed. Omef presented lower transcript levels and had no relation to PKS expression. These relative expression analyses will pave the way for further interpretation of the hypocrellin biosynthesis pathway.

  10. Manager, Restaurant or Coffee Shop (hotel & rest.) 187.168--Technical Report on Development of USES Aptitude Test Battery.

    Science.gov (United States)

    Manpower Administration (DOL), Washington, DC. U.S. Training and Employment Service.

    The United States Training and Employment Service General Aptitude Test Battery (GATB), first published in 1947, has been included in a continuing program of research to validate the tests against success in many different occupations. The GATB consists of 12 tests which measure nine aptitudes: General Learning Ability; Verbal Aptitude; Numerical…

  11. Vol. 4(1), S/No 13, January, 2015: 168-176 ISSN: 2225-8590 (Print ...

    African Journals Online (AJOL)

    DR Nneka

    2015-01-13

    Jan 13, 2015 ... The data generated were analysed with the. Pearson Product ... electricity, and healthcare; to improve the standard of living of the people. .... is an integral part of good governance in procurement, it is therefore necessary to.

  12. 26 CFR 1.168(j)-1T - Questions and answers concerning tax-exempt entity leasing rules (temporary).

    Science.gov (United States)

    2010-04-01

    ..., or any typewriters, calculators, adding or accounting machines, copiers, duplicating equipment, or... equipment means tangible personal property such as auxiliary machines, whether on-line or off-line, that are... sorters, plotters, and collators. Peripheral equipment does not include equipment not included in Asset...

  13. Evidence for a narrow structure at W~1.68 GeV in eta photoproduction on the neutron

    CERN Document Server

    Kuznetsov, V

    2007-01-01

    Recent updates in the analysis of quasi-free eta photoproduction on the neutron and on the proton bound in a deuteron taregt are presented. The $\\gamma n \\to \\eta n$ cross section reveals a bump-like structure which is not seen in the cross section on the proton. This structure may signal the existence of a relatively narrow baryon state. Its properties, the possibly narrow width and the strong photocoupling to the neutron, look surprising.

  14. Ectopic expression of RNF168 and 53BP1 increases mutagenic but not physiological non-homologous end joining

    DEFF Research Database (Denmark)

    Zong, Dali; Callén, Elsa; Pegoraro, Gianluca

    2015-01-01

    DNA double strand breaks (DSBs) formed during S phase are preferentially repaired by homologous recombination (HR), whereas G1 DSBs, such as those occurring during immunoglobulin class switch recombination (CSR), are repaired by non-homologous end joining (NHEJ). The DNA damage response proteins ...

  15. 国外新批准上市的药物新制剂新剂型(168

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    1美国FDA批准氯巴占(clobazam)片上市美国FDA批准LUndbeck公司的氯巴占(clobazam)片(商品名:Onfi)上市,用于辅助治疗成人和≥2岁儿童的伦-加综合征(非典型失神性癫痫)发作。因氯巴占在美国试用于的患者〈20万例,美国FDA授予其为罕用药物。剂量规格:氯巴占5,10和20mg/片。

  16. The MMPI-168(L) and ADD in Assessing Psychopathology in Individuals with Mental Retardation: Between and within Instrument Associations.

    Science.gov (United States)

    McDaniel, William F.; Passmore, Corie E.; Sewell, Hollie M.

    2003-01-01

    A study involving 58 adults with mental retardation and mental disorders found few correlations between the Minnesota Multiphasic Personality Inventory (MMPI) and the Assessment of Dual Diagnosis (ADD). The major exception was the Mania scale of the MMPI, which correlated moderately well with the ADD Schizophrenia and Dementia scales. (Contains…

  17. Activation of Small Molecules by DyI_2 and Dy

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    1 Results The reactivities of dysprosium diiodide and metallic dysprosium toward small molecules are discussed.For instance,DyI2-induced silyl radical reactions are described.The combination of dysprosium diiodide and dichloromethane can serve as an effective methylene transfer reagent for cyclopropanation of unfunctionalized alkenes beyond that possible with other metal-dichloromethane systems.Furthermore,we report that the combination of chlorosilane and metallic Dy can also serve as an effective prom...

  18. Lauren Berlant and Lee Edelman, Sex, Or The Unbearable (Durham: Duke University Press, 2014, pp. 168, ISBN: 9780822355946, £13.99, paperback.

    Directory of Open Access Journals (Sweden)

    Hannah Proctor

    2014-01-01

    Full Text Available 'So few colleges and universities bother to teach human sexuality...so much stigma adheres even to scholarly investigation of sex,' Gayle Rubin lamented in her 1984 essay 'Thinking Sex'. But it was an academic conference on Rubin's work - 'Rethinking Sex', a lavish threeday event, held at the University of Pennsylvania in 2009 - that provided the initial impetus for Lauren Berlant and Lee Edelman to enter into a dialogue on sexuality. The result is Sex, or the Unbearable, published by Duke University Press, the first in a series on queer theory edited by the authors.

  19. Extended X-ray emission from non-thermal sources in the COSMOS field: A detailed study of a large radio galaxy at z=1.168

    CERN Document Server

    Jelic, Vibor; Finoguenov, Alexis; Tanaka, Masayuki; Civano, Francesca; Schinnerer, Eva; Cappelluti, Nico; Koekemoer, Anton

    2012-01-01

    X-ray selected galaxy group samples are usually generated by searching for extended X- ray sources that reflect the thermal radiation of the intragroup medium. On the other hand, large radio galaxies that regularly occupy galaxy groups also emit in the X-ray window, and their contribution to X-ray selected group samples is still not well understood. In order to investigate their relative importance, we have carried out a systematic search for non-thermal extended X-ray sources in the COSMOS field. Based on the morphological coincidence of X-ray and radio extensions, out of 60 radio galaxies, and \\sim 300 extended X-ray sources, we find only one candidate where the observed extended X-ray emission arises from non- thermal processes related to radio galaxies. We present a detailed analysis of this source, and its environment. Our results yield that external Inverse Compton emission of the lobes is the dominant process that generates the observed X-ray emission of our extended X-ray candidate, with a minor contr...

  20. CRED Subsurface Temperature Recorder (STR); AMSM, ROS; Long: -168.16019, Lat: -14.55129 (WGS84); Sensor Depth: 3.40m; Data Range: 20040210-20060307.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Subsurface Temperature Recorders (STR) provide a time series of...

  1. CRED Subsurface Temperature Recorder (STR); AMSM, ROS; Long: -168.16883, Lat: -14.54871 (WGS84); Sensor Depth: 31.40m; Data Range: 20080313-20100303.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Subsurface Temperature Recorders (STR) provide a time series of...

  2. CRED Subsurface Temperature Recorder (STR); AMSM, ROS; Long: -168.16019, Lat: -14.55126 (WGS84); Sensor Depth: 7.90m; Data Range: 20040210-20050923.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Subsurface Temperature Recorders (STR) provide a time series of...

  3. CRED Subsurface Temperature Recorder (STR); AMSM, ROS; Long: -168.16865, Lat: -14.54849 (WGS84); Sensor Depth: 7.90m; Data Range: 20080313-20100303.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Subsurface Temperature Recorders (STR) provide a time series of...

  4. DELEUZE, Gilles (2014), Michel Foucault y el poder, Viajes iniciáticos I, trad. Javier Palacio Tauste, Errata naturae, Madrid, 168 pp.

    OpenAIRE

    2014-01-01

    Durante el curso 1985-1986 en la Universidad de París 8, Vincennes-Saint Denis, Deleuze imparte clases sobre Foucault, con quien había mantenido amistad. Tras la muerte de Foucault, Deleuze considera que no hay mayor homenaje que leer y releerle, y a lo largo de las tres lecciones que se hallan en el presente volumen explica sus lecturas, es decir, expone la manera en que ha de leerse a Foucault y cómo ha de entenderse la transición del saber al poder, tema central que aborda desde la obra de...

  5. CRED Acoustic Doppler Profiler (ADP); AMSM, ROS; Long: -168.15481, Lat: -14.53510 (WGS84); Sensor Depth: 7.01m; Data Range: 20080311-20080314.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Island Fisheries Science Center Acoustic Doppler Profilers (ADP) provide a time series of water current...

  6. Do Bans on Affirmative Action Hurt Minority Students? Evidence from the Texas Top 10% Plan. Upjohn Institute Working Paper No. 10-168

    Science.gov (United States)

    Cortes, Kalena E.

    2010-01-01

    In light of the recent bans on affirmative action in higher education, this paper provides new evidence on the effects of alternative admissions policies on the persistence and college completion of minority students. I find that the change from affirmative action to the Top 10% Plan in Texas decreased both retention and graduation rates of…

  7. CRED Subsurface Temperature Recorder (STR); AMSM, ROS; Long: -168.15720, Lat: -14.53294 (WGS84); Sensor Depth: 14.90m; Data Range: 20080312-20100304.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Subsurface Temperature Recorders (STR) provide a time series of...

  8. Mþÿ£ G**úC¯ŸŒE**Í*** * .12130.0m ch4 (1.68ppm) 500K ...

    Science.gov (United States)

    2015-09-01

    ... ˆ, Æt¯ ÂAìüÌÃ…‹_˜X~f;h‹_~fI‚*ç*R'…êg¶Å¦î²MÄ*†**aA*dƒ* ë*S$*D³*g**Ù£ Øw*×®*ÎX**ô*ßÆ*Ô™*Ì'*/{*ð4*«**kã*GL*'à*¶›*¢ÿà¹*}-o€‡€‡HaHa*c*c ...

  9. Antihypertensive drugs and risk of cancer: network meta-analyses and trial sequential analyses of 324,168 participants from randomised trials

    DEFF Research Database (Denmark)

    Bangalore, Sripal; Kumar, Sunil; Kjeldsen, Sverre E

    2011-01-01

    The risk of cancer from antihypertensive drugs has been much debated, with a recent analysis showing increased risk with angiotensin-receptor blockers (ARBs). We assessed the association between antihypertensive drugs and cancer risk in a comprehensive analysis of data from randomised clinical tr...

  10. 17 CFR 230.168 - Exemption from sections 2(a)(10) and 5(c) of the Act for certain communications of regularly...

    Science.gov (United States)

    2010-04-01

    ... section is not available for any communication that, although in technical compliance with this section... (iii) Either: (A) Has its equity securities trading on a designated offshore securities market as...

  11. 高表达PGA的枯草芽孢杆菌蛋白质组学研究%Proteomics Analysis of B. S 168 Overproducing PGA

    Institute of Scientific and Technical Information of China (English)

    张虹; 蒋红亮; 赵辅昆; 丁明

    2011-01-01

    To get knowledge of protemics of bacillus subtilis overproducing exogenous protein, Penicillin G Acylase(PGA) high expression bacillus subtilis is constructed, and which can reach high product of 1.6 g/L and enzyme activity of 10 U/mL. Then the authors separate the intracellar proteins of high expression and the control bacillus subtilis by 2-DE, and the result shows big differences between them. Six proteins are identified, of which four may be due to high expression of PGA inhibit cell growth, while the PhoR, and YxiE may relate to the high expression response mechanisms.%为了解外源蛋白高表达时枯草芽孢杆菌(Bacillus subtilis)表达系统胞内蛋白质组的变化,实验建立了青霉素G酰化酶(Penicillin G Acylase,PGA)高表达B.subtilis系统,可达到1.6 g/L的表达量以及10 U/mL的酶活;通过双向电泳技术(2-DE)分离PGA高表达以及低表达重组菌中胞内蛋白,软件分析结果显示,两者胞内蛋白表达差异极大;通过MALDI-TOF-TOF质谱鉴定出其中6个差异蛋白,其中4个与PGA高表达抑制菌体生长相关,而PhoR和YxiE则与PGA高表达分泌胁迫机制有关.

  12. DELEUZE, Gilles (2014, Michel Foucault y el poder, Viajes iniciáticos I, trad. Javier Palacio Tauste, Errata naturae, Madrid, 168 pp.

    Directory of Open Access Journals (Sweden)

    Alba Ramírez Guijarro

    2014-06-01

    Full Text Available Durante el curso 1985-1986 en la Universidad de París 8, Vincennes-Saint Denis, Deleuze imparte clases sobre Foucault, con quien había mantenido amistad. Tras la muerte de Foucault, Deleuze considera que no hay mayor homenaje que leer y releerle, y a lo largo de las tres lecciones que se hallan en el presente volumen explica sus lecturas, es decir, expone la manera en que ha de leerse a Foucault y cómo ha de entenderse la transición del saber al poder, tema central que aborda desde la obra de Foucault, sobre todo a partir de La arqueología del saber y Vigilar y castigar.

  13. 26 CFR 5f.168(f)(8)-1 - Questions and answers concerning transitional rules and related matters regarding certain safe...

    Science.gov (United States)

    2010-04-01

    ... taxpayer relates to minor parts or components. Clearing and grading of land will be considered in... determining the amount of the lessee's potential liability, the fair market value of the property will not...

  14. Complete sequence of the first chimera genome constructed by cloning the whole genome of Synechocystis strain PCC6803 into the Bacillus subtilis 168 genome.

    Science.gov (United States)

    Watanabe, Satoru; Shiwa, Yuh; Itaya, Mitsuhiro; Yoshikawa, Hirofumi

    2012-12-01

    Genome synthesis of existing or designed genomes is made feasible by the first successful cloning of a cyanobacterium, Synechocystis PCC6803, in Gram-positive, endospore-forming Bacillus subtilis. Whole-genome sequence analysis of the isolate and parental B. subtilis strains provides clues for identifying single nucleotide polymorphisms (SNPs) in the 2 complete bacterial genomes in one cell.

  15. Distant activity of Comet C/2002 VQ94 (LINEAR): Optical spectrophotometric monitoring between 8.4 and 16.8 au from the Sun

    Science.gov (United States)

    Korsun, Pavlo P.; Rousselot, Philippe; Kulyk, Irina V.; Afanasiev, Viktor L.; Ivanova, Oleksandra V.

    2014-04-01

    Spectrophotometric monitoring of distant Comet C/2002 VQ94 (LINEAR) was performed with the 6-m telescope of SAO RAS (Special Astrophysical Observatory of Russian Academy of Sciences) and with the 2.5-m Nordic Optical Telescope (Observatory del Roque de los Muchachos, Canarias, Spain) between 2008 and 2013. During this period the comet was on the outbound segment of its orbit, between heliocentric distances of 8.36 au and 16.84 au. Analysis of the spectra revealed the presence of the CO+ and N2+ emissions in the cometary coma at a distance of 8.36 au from the Sun. This distance is larger than ionic emissions have been detected in any previous objects. Only continuum, with no traces of emissions, was detected in the spectrum obtained in 2009 when the comet was at a distance of 9.86 au. From the spectra obtained in 2008, average column densities of 2.04 × 109 mol cm-2 for N2+ and 3.26 × 1010 mol cm-2 for CO+ were measured in the cometary coma. The derived values correspond to N2+/CO=0.06 within the projected slit. Images obtained through a red continuum filter in 2008 showed a bright, dust coma, indicating a high level of physical activity. A considerably lower level of activity was observed in 2009 and 2011 at distances of 9.86 au and 13.40 au respectively. No noticeable activity was detected in 2013 at a heliocentric distance of 16.84 au. The Afρ parameter, which is used as an indicator of cometary activity, was measured as 2000 cm in 2008, and 800 cm in 2009 and 2011. The Afρ values correspond to dust production rates between 10-20 kg s-1, 4-6 kg s-1 and 3-5 kg s-1 at 8.36, 9.86, and 13.40 au respectively. There is an obvious correlation between the decrease of the dust production rate of the nucleus and the disappearance of the emissions in the spectrum of C/2002 VQ94 (LINEAR) at heliocentric distances greater than 9 au. The colors and size of the nucleus of C/2002 VQ94 (LINEAR) were estimated from the images obtained during the late stage at a heliocentric distance of 16.84 au, when the activity had probable ceased. The B-V and V-R colors were estimated to be 1.07 ± 0.05 and 0.54 ± 0.03 respectively. The effective nucleus radius of 48 ± 2 km is in agreement with the previously published results, obtained from the observations of the comet during its early inactive stage (Jewitt, D. [2005]. Astron. J. 129, 530-538; Weiler, M., Rauer, H., Sterken, C. [2011]. Icarus 212, 351-366).

  16. CRED Recording Current Meter (RCM); AMSM, ROS; Long: -168.15482, Lat: -14.53518 (WGS84); Sensor Depth: 3.40m; Data Range: 20020223-20040209.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Recording Current Meters (RCM) provide a time series of water...

  17. Heterometallic octanuclear RE(III)3Ni(II)5 (RE = Dy(III), Gd(III) and Y(III)) clusters with slow magnetic relaxation for the dysprosium derivative.

    Science.gov (United States)

    Wang, Huiyu; Ke, Hongshan; Lin, Shuang-Yan; Guo, Yang; Zhao, Lang; Tang, Jinkui; Li, Yun-Hui

    2013-04-21

    Reactions of rare earth benzoate and nickel perchlorate with a Schiff-base ligand, 2-([(2-hydroxyphenyl)imino]methyl) phenol (H2L), in the presence of triethylamine yielded three heterobimetallic octanuclear clusters of general formula [RE3Ni5L5(PhCOO)3(μ3-OH)5(μ3-OCH3)(CH3OH)4(H2O)]·xCH3OH·yH2O (RE = Dy(III), x = 4, y = 4 (1), RE = Gd(III), x = 5, y = 4 (2), RE = Y(III), x = 5, y = 3 (3)). Single-crystal X-ray diffraction reveals that the metal core of each cluster consists of two distorted [RE2Ni2O4] cubane-like moieties and a heterobimetallic triangular [RE2NiO2] unit, with RE ions arranged in a typical triangular fashion. Variable-temperature solid state magnetic susceptibilities of these complexes were measured in the temperature range 2-300 K and the results indicate that an overall ferromagnetic interaction among the metal ions is operative for compounds 2 and 3. Under zero external field, the Dy3Ni5 compound shows a frequency dependence of the out-of-phase (χ'') signals, which indicates slow relaxation of the magnetization.

  18. Poly[(6-carboxypicolinato-κ3O2,N,O6(μ3-pyridine-2,6-dicarboxylato-κ5O2,N,O6:O2′:O6′dysprosium(III

    Directory of Open Access Journals (Sweden)

    Xu Li

    2009-11-01

    Full Text Available In the title complex, [Dy(C7H3NO4(C7H4NO4]n, one of the ligands is fully deprotonated while the second has lost only one H atom. Each DyIII ion is coordinated by six O atoms and two N atoms from two pyridine-2,6-dicarboxylate and two 6-carboxypicolinate ligands, displaying a bicapped trigonal-prismatic geometry. The average Dy—O bond distance is 2.40 Å, some 0.1Å longer than the corresponding Ho—O distance in the isotypic holmium complex. Adjacent DyIII ions are linked by the pyridine-2,6-dicarboxylate ligands, forming a layer in (100. These layers are further connected by π–π stacking interactions between neighboring pyridyl rings [centroid–centroid distance = 3.827 (3 Å] and C—H...O hydrogen-bonding interactions, assembling a three-dimensional supramolecular network. Within each layer, there are other π–π stacking interactions between neighboring pyridyl rings [centroid–centroid distance = 3.501 (2 Å] and O—H...O and C—H...O hydrogen-bonding interactions, which further stabilize the structure.

  19. 10 CFR Appendix B to Part 30 - Quantities 1 of Licensed Material Requiring Labeling

    Science.gov (United States)

    2010-01-01

    ... Cesium-135 10 Cesium-136 10 Cesium-137 10 Chlorine-36 10 Chlorine-38 10 Chromium-51 1,000 Cobalt-58m 10 Cobalt-58 10 Cobalt-60 1 Copper-64 100 Dysprosium-165 10 Dysprosium-166 100 Erbium-169 100 Erbium-171...

  20. 10 CFR 33.100 - Schedule A.

    Science.gov (United States)

    2010-01-01

    ... .1 Cesium-137 .1 .001 Chlorine-36 1 .01 Chlorine-38 100 1. Chromium-51 100 1. Cobalt-57 10 0.1 Cobalt-58m 100 1. Cobalt-58 1 .01 Cobalt-60 .1 .001 Copper-64 10 .1 Dysprosium-165 100 1. Dysprosium-166...

  1. Study on Magnetic Responsibility of Rare Earth Ferrite/Polyacrylamide Magnetic Microsphere

    Institute of Scientific and Technical Information of China (English)

    Zhang Ming; Wang Zhifeng; Zhang Hong; Dai Shaojun; Qiu Guanming; Okamoto Hiroshi

    2005-01-01

    In inverse microemulsion, rare earth ferrite/polyacrylamide magnetic microsphere were prepared and their magnetic responsibility were studied by magnetic balance. Results indicate that the magnetic responsibility of microsphere relates to magnetic moment of rare earth ion, and it can be improved by the addition of dysprosium ion of high magnetic moment. Dysprosium content has an effect on magnetic responsibility of dysprosium ferrite/polyacrylamide magnetic microsphere. The microsphere displays strong magnetic responsibility when the molar ratio of Dy3+/iron is 0.20.

  2. Poly[hexaaquatri-μ-malonato-didysprosium(III

    Directory of Open Access Journals (Sweden)

    Mei Yang

    2008-07-01

    Full Text Available The title compound, [Dy2(C3H2O43(H2O6]n, forms a coordination polymeric structure comprising hydrated dysprosium ions and malonate ligands. In the asymmetric unit, there are one dysprosium ion, one and a half malonate ligands, and three water molecules. Each DyIII atom is coordinated by six O atoms from four malonate ligands and by three water molecules, and displays a tricapped trigonal–prismatic coordination geometry. The malonate ligands adopt two types of coordination mode, linking dysprosium centres to form a three-dimensional coordination polymer. The extensive network of hydrogen bonds in this polymer enhances the structural stability.

  3. A Thermally Actuated Flux Pump for Energizing YBCO Pucks

    Science.gov (United States)

    2016-05-01

    antiferromagnetic, so heat pulses that go above and below 85 K should create a wave of magnetism across the face of the YBCO puck. The YBCO and dysprosium...temperature sensors were located at the centre and the outer perimeter on the surface of the dysprosium closest to the cold head, and on the side of the YBCO...outer perimeter of the dysprosium, the edge of the YBCO and the coldhead. In the following figures various curves are removed to give a clear picture of

  4. Maximum Permissible Concentrations and Negligible Concentrations for Rare Earth Elements (REEs)

    NARCIS (Netherlands)

    Sneller FEC; Kalf DF; Weltje L; Wezel AP van; CSR

    2000-01-01

    In dit rapport worden maximaal toelaatbare risiconiveaus (MTR) en verwaarloosbare risiconiveaus (VR) afgeleid voor zeldzame aardmetalen (ZAM). De geselecteerde ZAMs zijn Yttrium (Y), Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Samarium (Sm), Gadolinium (Gd), en Dysprosium (Dy

  5. Atomic physics: A strange kind of liquid

    Science.gov (United States)

    Laburthe-Tolra, Bruno

    2016-11-01

    Interactions between the magnetic dipoles of dysprosium atoms in an ultracold gas can produce a 'self-bound' droplet. This provides a useful isolated system for probing the quantum-mechanical properties of ultracold gases. See Letter p.259

  6. China Rare Earth Market Review

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    @@ Active demands from downstream industry drove the price rise of rare earth products in Chinese domestic marketrecently, particularly didymium and dysprosium products. Prices of other rare earth products remained stable.

  7. Luminescence investigation of Dy2O2S and Dy2O2SO4 obtained by thermal decomposition of sulfate hydrate

    Institute of Scientific and Technical Information of China (English)

    RV Rodrigues; L Marciniak; LU Khan; JR Matos; HF Brito; W Strk

    2016-01-01

    The yellow emitting dysprosium oxysulfide (Dy2O2S) and dysprosium oxysulfate (Dy2O2SO4) compounds were prepared from the thermal decomposition of hydrated dysprosium sulphate. The materials were characterized by using thermogravimetry (TG/DTG), X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) and Raman spectroscopies. The thermal stability temperatures at around 1151 and 1313 K were determined for the Dy2O2S and Dy2O2SO4 materials, respectively. The photolumines-cence properties of the dysprosium oxysulfide were investigated, showing narrow emission bands assigned to the 4F9/2→6HJ intracon-figurational transitions of the Dy3+ion. The yellow emission color of this phosphor suggests that the Dy2O2S is a promising material for applications in LEDs.

  8. A profusão de igrejas entre estudantes do curso de teologia do Izabela Hendrix http://dx.doi.org/10.15601/1983-7631/rt.v3n5p168-173

    Directory of Open Access Journals (Sweden)

    Adilson Schultz

    2011-04-01

    Full Text Available O universo multifacetado das igrejas evangélicas no Brasil está nominalmente representado nos estudantes matriculados no curso de teologia do Centro Universitário Metodista Izabela Hendrix, em Belo Horizonte. No primeiro semestre de 2009 eram cerca de 150 diferentes igrejas ou denominações para um total de 250 alunos ou alunas. Na sala de aula da disciplina Trindade e Teologia da Criação eram 32 diferentes igrejas para um total de 53 alunos e alunas.Esses surpreendentes números elevam o microuniverso escolar ao patamar de caso paradigmático do fenômeno da diversidade religiosa entre evangélicos no Brasil. Dessa forma, permite estudar de forma concentrada nuances do fenômeno religioso evangélico, além de encetar arrazoados teóricos relevantes na teologia e nas ciências da religião. Essa comunicação tem a tarefa de mostrar essa diversidade da filiação religiosa dos estudantes, e sugerir as primeiras formulações para possíveis análises futuras. 

  9. INTERNACIONALIZAÇÃO DE EMPRESAS BRASILEIRAS: DESENVOLVIMENTO DE GESTORES COMO FATOR ESSENCIAL PARA A ESTRATÉGIA DE NEGÓCIOS DOI:10.7444/fsrj.v3i1.68

    OpenAIRE

    HILARIO DE MACEDO OLIVEIRA

    2011-01-01

    The globalization phenomenon has given rise to a new and virtually limitless dimension for companies to gain access to new markets beyond their country borders. This has proven to be an opportunity for growth and expansion. Given the transformations that this phenomenon has driven in the international business environment, one is struck by the fact that the presence of Brazilian companies abroad is still low, as Brazilian business is continues to be shy of expanding via internationalization. ...

  10. International Day for the Evaluation of Abdominal Obesity (IDEA): a study of waist circumference, cardiovascular disease, and diabetes mellitus in 168,000 primary care patients in 63 countries

    Science.gov (United States)

    Balkau, Beverley; Deanfield, John E.; Després, Jean-Pierre; Bassan, Jean-Pierre; Fox, Keith A.A.; Smith, Sidney C.; Barter, Philip; Tan, Chee E.; Van Gaal, Luc; Wittchen, Hans-Ulrich; Massien, Christine; Haffner, Steven M.

    2007-01-01

    Background Abdominal adiposity is a growing clinical and public health problem. It is not known whether it is similarly associated with cardiovascular disease (CVD) and diabetes in different regions around the world, and thus whether measuring waist circumference (WC) in addition to body mass index (BMI) is useful in primary care practice. Methods and Results Randomly chosen primary care physicians (PCPs) in 63 countries recruited consecutive patients aged 18 to 80 years, on two pre-specified half-days. WC and BMI were measured and the presence of CVD and diabetes recorded. Of the patients consulting the PCPs, 97% agreed to participate in this study. Overall, 24% of 69,409 men and 27% of 98,750 women were obese (BMI ≥ 30 kg/m2). A further 40% and 30% of men and women, respectively, were overweight (BMI 25 to 30 kg/m2). In men and women, respectively, increased WC (>102/88cm, men/women) was recorded in 29% and 48%, CVD in 16% and 13%, and diabetes in 13% and 11%. There was a statistically significant graded increase in the frequency of CVD and diabetes with both BMI and WC, with a stronger relationship for WC than for BMI across regions, for both genders. This relationship between WC, CVD and particularly diabetes was seen even in lean patients (BMI <25 kg/m2). Conclusions Among men and women consulting PCPs, BMI and particularly WC were both strongly linked to CVD and especially to diabetes. Strategies to address this global problem are required to prevent an epidemic of these major causes of morbidity and mortality. PMID:17965405

  11. CRED Coral Reef Early Warning System (CREWS) Standard Buoy, Environmental Data Logger (EDL); AMSM, ROS; Long: -168.16018, Lat: -14.55140 (WGS84); Sensor Depth: 0.00m; Data Range: 20040208-20060307.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CREWS Standard (CREWS-STD) buoys are equipped to measure sea surface water temperature and conductivity (Sea-Bird Model SBE37-SM, Sea-Bird Electronics, Inc.,...

  12. CRED Coral Reef Early Warning System (CREWS) Standard Buoy, Environmental Data Logger (EDL); AMSM, ROS; Long: -168.16018, Lat: -14.55140 (WGS84); Sensor Depth: 0.00m; Data Range: 20020224-20040208.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CREWS Standard (CREWS-STD) buoys are equipped to measure sea surface water temperature and conductivity (Sea-Bird Model SBE37-SM, Sea-Bird Electronics, Inc.,...

  13. CRED Wave and Tide Recorder (WTR); AMSM, ROS; Long: -168.13762, Lat: -14.54766 (WGS84); Sensor Depth: 16.70m; Data Range: 20081204-20100302.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Wave and Tide Recorders (WTR) provide a time series of...

  14. CRED Wave and Tide Recorder (WTR); AMSM, ROS; Long: -168.13758, Lat: -14.54776 (WGS84); Sensor Depth: 16.46m; Data Range: 20060306-20070910.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Wave and Tide Recorders (WTR) provide a time series of...

  15. Vania Markarian: El 68 uruguayo. El movimiento estudiantil entre molotovs y música beat : Bernal, Universidad Nacional de Quilmes, 2012, 168 págs.

    OpenAIRE

    2015-01-01

    En el transcurso de la década de 1960 la rebelión juvenil emergió como dato mundial, traspasando fronteras nacionales y continentales. Acontecimientos como la revuelta por la “libertad de expresión” en Berkeley, el “mayo francés” o la “masacre de Tlatelolco” en México, se han convertido en hitos mundiales del activismo estudiantil de los años sesenta. En este campo, se inscribe El 68 uruguayo, el reciente trabajo de la historiadora uruguaya Vania Markarian. A través del análisis de las movili...

  16. CRED Subsurface Temperature Recorder (STR); Rose Atoll, American Samoa; Long: -168.16864, Lat: -14.54858 (WGS84); Sensor Depth: 8.50m; Data Date Range: 20100304-20120419.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Subsurface Temperature Recorders (STR) provide a time series...

  17. CRED Subsurface Temperature Recorder (STR); Rose Atoll, American Samoa; Long: -168.16020, Lat: -14.55127 (WGS84); Sensor Depth: 2.70m; Data Date Range: 20100304-20120418.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Subsurface Temperature Recorders (STR) provide a time series...

  18. A review and reanalysis of Bruno Schulz's "Erkrankungsalter schizophrener Eltern und Kinder [Age at onset of illness in schizophrenic parents and offspring]:" Zeitschrift für die gesamte Neurologie und Psychiatrie, 168, 709-721, 1940.

    Science.gov (United States)

    Sham, P C; Zerbin-Rüdin, E; Kendler, K S

    1995-01-01

    Nearly all previous evidence of the familial transmission of age at onset of schizophrenia has been in siblings and twins. In his paper, Bruno Schulz examined the age at onset distribution of schizophrenia in affected parent and offspring pairs, using a systematic series of ascertained cases (n = 106), as well as a second series of chronic in-patients (n = 36). The parent-offspring correlation in age at onset, for cases with a definite diagnosis in the systematically ascertained series, was estimated at 0.346 (95% confidence interval 0.134, 0.528). Schulz did not test for differences between the two series and between males and females, but our reanalysis, using correlational methods and a mixed linear model, did not detect any significant differences. These results are consistent with previous findings that age at onset of schizophrenia is influenced by familial factors which may be genetic.

  19. Increased retention of functional fusions to toxic genes in new two-hybrid libraries of the E. coli strain MG1655 and B. subtilis strain 168 genomes, prepared without passaging through E. coli

    Directory of Open Access Journals (Sweden)

    Projan Steve

    2003-09-01

    Full Text Available Abstract Background Cloning of genes in expression libraries, such as the yeast two-hybrid system (Y2H, is based on the assumption that the loss of target genes is minimal, or at worst, managable. However, the expression of genes or gene fragments that are capable of interacting with E. coli or yeast gene products in these systems has been shown to be growth inhibitory, and therefore these clones are underrepresented (or completely lost in the amplified library. Results Analysis of candidate genes as Y2H fusion constructs has shown that, while stable in E. coli and yeast for genetic studies, they are rapidly lost in growth conditions for genomic libraries. This includes the rapid loss of a fragment of the E. coli cell division gene ftsZ which encodes the binding site for ZipA and FtsA. Expression of this clone causes slower growth in E. coli. This clone is also rapidly lost in yeast, when expressed from a GAL1 promoter, relative to a vector control, but is stable when the promoter is repressed. We have demonstrated in this report that the construction of libraries for the E. coli and B. subtilis genomes without passaging through E. coli is practical, but the number of transformants is less than for libraries cloned using E. coli as a host. Analysis of several clones in the libraries that are strongly growth inhibitory in E. coli include genes for many essential cellular processes, such as transcription, translation, cell division, and transport. Conclusion Expression of Y2H clones capable of interacting with E. coli and yeast targets are rapidly lost, causing a loss of complexity. The strategy for preparing Y2H libraries described here allows the retention of genes that are toxic when inappropriately expressed in E. coli, or yeast, including many genes that represent potential antibacterial targets. While these methods are generally applicable to the generation of Y2H libraries from any source, including mammalian and plant genomes, the potential of functional clones interacting with host proteins to inhibit growth would make this approach most relevant for the study of prokaryotic genomes.

  20. HCMV AD169株大鼠慢性感染模型的初步探讨%An experimental study of rat infeected with human cytomegalovirus AD168 strain

    Institute of Scientific and Technical Information of China (English)

    孟红; 孙德刚; 王健; 刘菊华; 孙广莲; 李焱; 张家驹; 张维东

    2000-01-01

    Objective To Study the sensitivity of rat to human cytomegalovirus (HCMV) infection and to es-tablish a stable animal model. Methods Two kinds of rat experiments were carried out: 1)30 SD rats were divided intothree groups randomly,they were virus inoculated group,inactivated virus inoculated group and the normal rat group re-spectively; 2)40 Wistar rats were randomly divided into two groups,they were the virus inoculated group and the inacti-vated virus inoculated group. All the rats were inoculated through tail vein.90 d later,the rat's tissue lesions were ob-served by pathological techniques,HCMV antigen was detected by immunohistochemical method and the HCMV DNA wasanalyzed by in situ hybridization. Results The extensive pathological damages in tissues of HCMV infected rats wereobserved. Meanwhile,the viral antigen and viral DNA were also demonstrated in many tissues of HCMV infected rats.Conchusion Rat is sensitive to iridectiion of HCMV AD1168 strain, hut, as an animal model study,we stoll have a lot of works to do.%目的 探讨人巨细胞病毒(Human Cytomegalovirus,HCMV)感染大鼠的敏感性和稳定性,探讨建立大鼠感染HCMV动物模型的可行性。方法 第一次动物试验:SD大鼠30只,随机均分为3组,分别为接种病毒组、灭活病毒组和正常对照组,病毒接种途径为尾静脉注射;第二次动物试验:Wistar大鼠40只,分别为接种病毒组(20只)、灭活病毒组(20只),病毒接种途径同第一次动物试验。两次试验动物均于90d后分别以病理学方法 研究动物组织损伤特点,以免疫组化方法 检查病毒抗原,原位杂交方法 检测动物组织细胞中HCMV基因。结果 两次静脉途径接种HCMV AD169株90d的动物,组织发生广泛病理损害,免疫组化方法 和原位杂交方法 在多种组织细胞内查到HCMV抗原和基因表达。结论 HCMV AD169株可感染健康大鼠,可望作为HCMV动物慢性感染模型。

  1. Case note: Hof 's-Hertogenbosch (zaaknr. HD 200.168.392_01: Werkgeversaansprakelijkheid. Is werkgever aansprakelijk voor schade van werknemer die gewond raakt wanneer hij over hek van toegangspoort klimt?)

    NARCIS (Netherlands)

    Dankers-Hagenaars, D.L.M.T.

    2016-01-01

    Is sprake van schade 'in de uitoefening van de werkzaamheden' in de zin van art. 7:658 BW waarvoor werkgever aansprakelijk is wanneer werknemer over het hek van de toegangspoort van het bedrijf klimt en schade oploopt?

  2. CRED Coral Reef Early Warning System (CREWS) Standard Buoy, Supplemental Sea Surface Temperature Recorder (SBE39); AMSM, ROS; Long: -168.16018, Lat: -14.55140 (WGS84); Sensor Depth: 1.00m; Data Range: 20020224-20020420.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CREWS Standard (CREWS-STD) buoys are equipped to measure sea surface water temperature and conductivity (Sea-Bird Model SBE37-SM, Sea-Bird Electronics, Inc.,...

  3. CRED Coral Reef Early Warning System (CREWS) Standard Buoy, Supplemental Sea Surface Temperature Recorder (SBE39); AMSM, ROS; Long: -168.16025, Lat: -14.55134 (WGS84); Sensor Depth: 1.00m; Data Range: 20060307-20070902.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CREWS Standard (CREWS-STD) buoys are equipped to measure sea surface water temperature and conductivity (Sea-Bird Model SBE37-SM, Sea-Bird Electronics, Inc.,...

  4. CRED Subsurface Temperature Recorder with Pressure Sensor (STPR); AMSM, ROS; Long: -168.15994, Lat: -14.55156 (WGS84); Sensor Depth: 10.36m; Data Range: 20080311-20080314.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data from Coral Reef Ecosystem Division (CRED), NOAA Pacific Islands Fisheries Science Center (PIFSC) Subsurface Temperature and Pressure Recorders (STPR) provide a...

  5. CRED Coral Reef Early Warning System (CREWS) Standard Buoy, Environmental Data Logger (EDL); AMSM, ROS; Long: -168.16025, Lat: -14.55134 (WGS84); Sensor Depth: 0.00m; Data Range: 20060307-20080312.

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CREWS Standard (CREWS-STD) buoys are equipped to measure sea surface water temperature and conductivity (Sea-Bird Model SBE37-SM, Sea-Bird Electronics, Inc.,...

  6. Coll-Hurtado, A. (2016, Espacio y ocio: el turismo en México, Instituto de Geografía, UNAM, México, 168 pp., ISBN 978-607-02-8505-9

    Directory of Open Access Journals (Sweden)

    Karina Busto Ibarra

    2017-03-01

    Full Text Available El turismo es un tema de gran actualidad, y en las últimas décadas se ha convertido en una de las principales actividades económicas en diversos países del mundo que ofrecen al viajero increíbles lugares naturales, culturales, históricos, arqueológicos, que lo aleja de su rutina diaria y le permite disfrutar de un tiempo de ocio.

  7. Syntheses, structures, and magnetic properties of a family of tetranuclear hydroxido-bridged Ni(II)2Ln(III)2 (Ln = La, Gd, Tb, and Dy) complexes: display of slow magnetic relaxation by the zinc(II)-dysprosium(III) analogue.

    Science.gov (United States)

    Abtab, Sk Md Towsif; Maity, Manoranjan; Bhattacharya, Kisholoy; Sañudo, E Carolina; Chaudhury, Muktimoy

    2012-10-01

    A new family of [2 × 2] tetranuclear 3d-4f heterometallic complexes have been synthesized. These are [Zn(2)Dy(2)L(2)(μ(3)-OH)(2)(μ(4)-OH)(dbm)(2)(MeOH)(2)](NO(3))·2H(2)O·MeOH (3), [Ni(2)Dy(2)L(2)(μ(3)-OH)(2)(μ(4)-OH)(dbm)(2)(MeOH)(2)](NO(3))·MeOH (4), [Ni(2)La(2)L(2)(μ(3)-OH)(2)(μ(4)-OH)(dbm)(2)(MeOH)(2)](ClO(4))·H(2)O·2MeOH (5), [Ni(2)Tb(2)L(2)(μ(3)-OH)(2)(μ(4)-OH)(dbm)(2) (MeOH)(2)](NO(3))·MeOH (6), and [Ni(2)Gd(2)L(2)(μ(3)-OH)(2)(μ(4)-OH)(dbm)(2)(MeOH)(2)](NO(3))·MeOH (7), [H(2)L = N,N'-dimethyl-N,N'-bis(2-hydroxy-3,5-dimethylbenzyl)ethylenediamine and Hdbm = dibenzoylmethane] obtained through a single-pot synthesis using [Zn(HL)(dbm)] (for 3)/[Ni(HL)(dbm)]·2CH(3)OH (for 4, 5, 6, and 7) as 3d-metal ion precursors. Single-crystal X-ray diffraction analysis and electrospray ionization (ESI) mass spectroscopy have been used to establish their identities. Compounds are isostructural, in which the metal ions are all connected together by a bridging hydroxido ligand in a rare μ(4)-mode. In complexes 3-7, the metal ions are antiferromagnetically coupled. Taking a cue from the results of 3 and 5, precise estimations have been made for the antiferromagnetic Ni···Ni (J(Ni) = -50 cm(-1)), Ni···Gd (J(NiGd) = -4.65 cm(-1)), and Gd···Gd (J(Gd) = -0.02 cm(-1)) exchange interactions in 7, involving the gadolinium(III) ions. The Zn(II)(2)Dy(III)(2) compound 3 has shown the tail of an out-of-phase signal in alternating current (AC) susceptibility measurement, indicative of slow relaxation of magnetization. Interestingly, the Ni(II)(2)Dy(III)(2) compound 4 in which both the participating metal ions possess large single ion anisotropy, has failed to show up any slow magnetic relaxation.

  8. 镝与二甘醇酸的配位聚合物的水热合成、晶体结构及荧光性质%Hydrothermal Synthesis, Crystal Structure and Fluorescence Property of Dysprosium Coordination Polymer with Diglycolic Acid

    Institute of Scientific and Technical Information of China (English)

    张艳斌; 鞠艳玲; 李艳秋; 李夏

    2007-01-01

    A new lanthanide coordination polymer {[Dy2(dga)3(H2O)4]·2H2O}n was prepared by hydrothermal method with DyCl3·6H2O and diglycolic acid (H2dga), and structurally characterized by single-crystal X-ray diffraction technique. The complex crystallizes in Orthorhombic system, C2221 space group with a=1.773 5(11) nm, b =0.875 2(6) nm, c=1.504 3(9) nm, V=2.335 0(3) nm3, Dc=2.359 Mg·m-3, Z=4,μ=6.447 mm-1, F(000)=1 584.0, R=0.0507, wR=0.121 6. In the complex, there are two types of coordination environments for Dy3+ ion. One Dy1 ion is nine-coordinated by three diglycolato groups via six carboxyl oxygen atoms and three ether oxygen atoms. The Dy1 ion is in a distorted monocapped square-antiprism coordination geometry. Whereas the other Dy2 ion is eight-coordinated and the coordination sphere around each Dy2 ion consists of four carboxyl oxygen atoms from four diglycolato ligands and four oxygen atoms from four coordinated water molecules. The coordination polyhedron of Dy2 ion can be described as a distorted square-antiprism. Eight- and nine-coordinate Dy3+ ions are linked by diglycolato ligands to form a 2D network structure. The fluorescence spectral of the complex in solid state at room temperature shows that the diglycolic acid is suitable for the sensitization on the luminescence of Dy3+ ion. CCDC: 660435.%DyCl3·6H2O与二甘醇酸(H2dga)在水热条件下反应得到配位聚合物{[Dy2(dga)3(H2O)4]·2H2O}n,用X-射线衍射单晶结构分析方法确定了其晶体结构.该配合物的晶体属于正交晶系,C2221空间群.在配合物中,Dy3+离子存在两种类型的配位环境.九配位的Dy1离子与3个二甘醇酸根的6个羧基氧原子和3个醚氧原子配位,其配位多面体可描述为一个扭曲的单帽四方反棱柱;八配位的Dy2离子周围的8个配位氧原子形成一个扭曲的四方反棱柱配位多面体,其中4个氧原子来自4个二甘醇酸根,另外4个氧原子由4个配位水分子提供.二甘醇酸配体的2个羧基和其醚氧原子同时与Dy3+离子配位而形成2D网状结构.该配合物在室温下的固体荧光光谱显示了中心Dy3+离子的特征荧光,位于483 nm和574 nm的发射峰分别对应于Dy3+离子的4F9/2→6H15/2和4F9/2→6H13/2跃迁.

  9. 稀土金属 Dy 掺杂 TiO2光催化剂的制备及其对孔雀石绿降解性能的研究%Study on preparation of rare earth element dysprosium doped with TiO2 photocatalyst and its degradation property to malachite green

    Institute of Scientific and Technical Information of China (English)

    高航; 高梅; 李松田; 马威; 吴晓兵

    2015-01-01

    To improve the oxidation efficiency of heterogeneous photocatalysis,TiO2 doped by rare-earth elements was adopted. The results indicate that:there was red-shift adsorption spectra of synthetic product which could enhance malachite green oxidative decolorization effectively under the action of normal visible light. Due to Dy3 + -TiO2 doped photocatalyst,activation energy of photooxidation was decreased so that the efficiency of photolysis could be improved significantly. What’s more,the treatment of malachite green model wastewater with Dy3 + -TiO2 was studied and optimal conditions has been determined as follows:the concentration of malachite green is 20 mg / L,molar ratio of Dy-doping is 1. 5% . Under that reaction con-dition,after 150 min,the decolorization rates of malachite green will be over 60% .%采用稀土元素掺杂法制备改性的二氧化钛,以改善非均相光催化的氧化效率。研究结果表明,在掺杂镝元素之后,产物的吸收光谱发生了红移,在可见光作用下,可以有效地促进孔雀石绿的氧化脱色。引入掺杂型光催化剂 Dy3+-TiO2后,可降低光氧化体系所需的能量,提高光解效率。以孔雀石绿溶液作为模拟废水,考察了 Dy3+离子掺杂量、底物浓度等因素的影响,确定了优化的实验条件:在孔雀石绿的浓度为20 mg/ L,稀土元素 Dy 掺杂量为1.5%(摩尔比)时,反应150 min 后孔雀石绿脱色率达到60%以上。

  10. N-对甲苯磺酰β-丙氨酸镝配合物的合成、晶体结构及抑菌活性%Synthesis crystal structure and antibacterial activity of dysprosium complex with N-p-tolysulfonyl-β-Alanine

    Institute of Scientific and Technical Information of China (English)

    李森兰; 马录芳; 王利亚; 黄世稳; 韦启后; 梁福沛; 张漫波

    2005-01-01

    稀土由于其特殊的电子结构,容易与一些中性、酸性和碱性生物配体形成配合物。本文合成并测定了对甲苯磺酰β-丙氨酸与稀土镝配合物的晶体结构及抑菌活性。

  11. Bis[μ-2-(4-hydroxyphenylacetato]-κ3O,O′:O;κ3O:O,O′-bis{aqua(4,4′-bipyridine-κNbis[2-(4-hydroxyphenylacetato-κ2O,O′]dysprosium(III} monohydrate

    Directory of Open Access Journals (Sweden)

    Jia-Lu Liu

    2010-12-01

    Full Text Available In the title dinuclear complex, [Dy2(C8H7O36(C10H8N22(H2O2]·H2O, the DyIII atoms are coordinated by eight O atoms from four 2-(4-hydroxyphenylacetate (HPAA ligands and a water molecule, and one N atom from a 4,4′-bipyridine (bipy ligand in a distorted tricapped trigonal prismatic geometry. Whereas four HPAA ligands coordinate to just two DyIII atoms, the remaining two ligands bridge the two DyIII atoms. In the crystal, O—H...O and O—H...N hydrogen bonds link the molecules into a three-dimensional network.

  12. Poly[hexa-aqua-tri-μ-malonato-didysprosium(III)].

    Science.gov (United States)

    Fang, Zhan-Qiang; Zeng, Rong-Hua; Song, Zhao-Feng; Yang, Mei

    2008-06-07

    The title compound, [Dy(2)(C(3)H(2)O(4))(3)(H(2)O)(6)](n), forms a coordination polymeric structure comprising hydrated dysprosium ions and malonate ligands. In the asymmetric unit, there are one dysprosium ion, one and a half malonate ligands, and three water mol-ecules. Each Dy(III) atom is coordinated by six O atoms from four malonate ligands and by three water mol-ecules, and displays a tricapped trigonal-prismatic coordination geometry. The malonate ligands adopt two types of coordination mode, linking dysprosium centres to form a three-dimensional coordination polymer. The extensive network of hydrogen bonds in this polymer enhances the structural stability.

  13. Poly[hexa­aqua­tri-μ-malonato-didysprosium(III)

    Science.gov (United States)

    Fang, Zhan-Qiang; Zeng, Rong-Hua; Song, Zhao-Feng; Yang, Mei

    2008-01-01

    The title compound, [Dy2(C3H2O4)3(H2O)6]n, forms a coordination polymeric structure comprising hydrated dysprosium ions and malonate ligands. In the asymmetric unit, there are one dysprosium ion, one and a half malonate ligands, and three water mol­ecules. Each DyIII atom is coordinated by six O atoms from four malonate ligands and by three water mol­ecules, and displays a tricapped trigonal–prismatic coordination geometry. The malonate ligands adopt two types of coordination mode, linking dysprosium centres to form a three-dimensional coordination polymer. The extensive network of hydrogen bonds in this polymer enhances the structural stability. PMID:21202748

  14. Poly[hexa­aqua­tri-μ-malonato-didysprosium(III)

    OpenAIRE

    2008-01-01

    The title compound, [Dy2(C3H2O4)3(H2O)6]n, forms a coordination polymeric structure comprising hydrated dysprosium ions and malonate ligands. In the asymmetric unit, there are one dysprosium ion, one and a half malonate ligands, and three water molecules. Each DyIII atom is coordinated by six O atoms from four malonate ligands and by three water molecules, and displays a tricapped trigonal–prismatic coordination geometry. The malonate ligands adopt two types of coordination mode, linkin...

  15. Photoluminescence, trap states and thermoluminescence decay process study of Ca2MgSi2O7 : Eu2+, Dy3+ phosphor

    Indian Academy of Sciences (India)

    Ravi Shrivastava; Jagjeet Kaur; Vikas Dubey; Beena Jaykumar

    2014-06-01

    Europium and dysprosium-doped calcium magnesium silicate powder with different concentrations of dysprosium were synthesized using solid-state reaction. The Fourier transform infrared (FT–IR) spectra confirmed the proper preparation of the sample. The prepared phosphors were characterized using photoluminescence excitation and emission spectra. Prominent green colour emission was obtained under ultraviolet excitation. The thermoluminescence glow curves of the samples were measured at various delay times. With increased delay time, the intensity of the thermoluminescence peak decays and the position of the thermoluminescence peak shifts towards higher temperature, indicating the considerable retrapping associated with general order kinetics.

  16. Perovskite catalysts for oxidative coupling

    Science.gov (United States)

    Campbell, Kenneth D.

    1991-01-01

    Perovskites of the structure A.sub.2 B.sub.2 C.sub.3 O.sub.10 are useful as catalysts for the oxidative coupling of lower alkane to heavier hydrocarbons. A is alkali metal; B is lanthanide or lanthanum, cerium, neodymium, samarium, praseodymium, gadolinium or dysprosium; and C is titanium.

  17. Rare Earths; The Fraternal Fifteen (Rev.)

    Energy Technology Data Exchange (ETDEWEB)

    Gschneidner, Jr., Karl A. [Iowa State University; Ames Laboratory

    1966-01-01

    Rare earths are a set of 15 elements: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. They are not rare and not earths; they are metals and quite abundant. They are studied to develop commercial products which are beneficial to mankind, and because some rare earths are important to fission products.

  18. An organometallic sandwich lanthanide single-ion magnet with an unusual multiple relaxation mechanism.

    Science.gov (United States)

    Jeletic, Matthew; Lin, Po-Heng; Le Roy, Jennifer J; Korobkov, Ilia; Gorelsky, Serge I; Murugesu, Muralee

    2011-12-07

    A dysprosium(III) sandwich complex, [Dy(III)(COT″)(2)Li(THF)(DME)], was synthesized using 1,4-bis(trimethylsilyl)cyclooctatetraenyl dianion (COT″). The complex behaves as a single-ion magnet and demonstrates unusual multiple relaxation modes. The observed relaxation pathways strongly depend on the applied static dc fields.

  19. On the use of Liouville relaxation supermatrices in Mössbauer studies. III : Application to Mössbauer relaxation in superconductors

    OpenAIRE

    Hartmann-Boutron, F.

    1980-01-01

    Wagner et al. recently studied the Mössbauer relaxation of paramagnetic dysprosium as an impurity in superconducting thorium. In connection with this study, we have derived simple formulas for interpreting relaxation effects in 2+ 0+ Mössbauer transitions of rare earth ions in superconductors.

  20. High-pressure synthesis of {nu}-DyBO{sub 3}

    Energy Technology Data Exchange (ETDEWEB)

    Emme, H.; Huppertz, H. [Dept. Chemie und Biochemie, Ludwig-Maximilians-Univ. Muenchen, Muenchen (Germany)

    2004-12-01

    {nu}-Dysprosium borate ({nu}-DyBO{sub 3}) was synthesized under conditions of high temperature and pressure in a Walker-type multi-anvil apparatus at 3 GPa and 1323 K. The compound is isotypic with the already known {nu}-samarium and {nu}-europium orthoborates. (orig.)

  1. Note: Simple means for selective removal of the 365 nm line from the Hg spectrum using Dy

    DEFF Research Database (Denmark)

    Vesborg, Peter Christian Kjærgaard; Chorkendorff, Ib; Brock-Nannestad, T.

    2011-01-01

    The emission spectrum of mercury has a notable line at about 365 nm under both low and medium-high pressure conditions. A simple filter based on a solution of dysprosium ions, Dy3+, is shown to be very useful for applications of Hg-light sources where this line is unwanted. The presented filter i...

  2. Benzoxazole-based heterometallic dodecanuclear complex [Dy(III)4Cu(II)8] with single-molecule-magnet behavior.

    Science.gov (United States)

    Iasco, Olga; Novitchi, Ghenadie; Jeanneau, Erwann; Wernsdorfer, Wolfgang; Luneau, Dominique

    2011-08-15

    Three Cu-Ln (Ln = Dy, Gd, Y) dodecanuclear clusters assembled by a novel ligand of the benzoxazole type are reported. The dysprosium cluster exhibits a frequency dependence of the alternating-current susceptibility and hysteresis loop at low temperature, indicating single-molecule-magnet behavior.

  3. Market Review

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ RE Market Dec. 10-20 Price of Pr-Nd oxide and Pr-Nd mischrnetal kept on rising in domestic market recently due to the tight supply of RE carbonate. Short supply of ion adsorption clay in southern China did not affect the prices of dysprosium and terbium obviously.

  4. China Rare Earth Market Review

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    June 20-30, 2011 Prices of heavy rare earth products remained soaring. The same happened to dysprosium and its related products due to tight supply. Separation plants held tightly of europium oxide. Refining plants took a positive attitude toward the ma

  5. Market Review

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ Rare earth market was inactive affected by sluggish demand for didymium mischmetal and dysprosium metal by NdFeB industry. Most enterprises were waiting to see what was going on with the industry. However, price of didymium oxide rose again and price of heavy rare earths kept strong. Price of Dy oxide and Yt oxide Kept on rising.

  6. Market Review

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ RE Market May 10-20 Learned from Inner Mongolia Rare Earth Association,domestic rare earth market was in good situation driven by high demand. Price of neodymium rose strongly. Dysprosium oxide and terbium oxide still hovered at the higher price level. Price of europia remained stable.

  7. Market Review RE Market April 20-30

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Driven by high demand, China rare earth market was in good situation. Dysprosium oxide and terbium oxide hovered at the higher price level. Price of Pr-Nd oxide kept upward.Price of SmEuGd rose on small extent.

  8. Infrared Transparent Selenide Glasses.

    Science.gov (United States)

    1997-03-14

    crystalline halides, silica and fluoride glasses, and chalcogenide glasses. Crystalline halides undergo plastic deformation and are hygroscopic...mainly for applications operating at wavelengths less than 3 microns. Silicate and fluoride glasses have been developed as optical fiber amplifiers...activity. Preferred rare earths includes praseodymium, neodymium, erbium, cerium , dysprosium, holmium, thulium, terbium, ytterbium or mixtures of

  9. Synthesis and structure of didysprosium complexes with a tetraketone

    Science.gov (United States)

    Yang, Luqin; Yang, Rudong

    1996-06-01

    Two novel didysprosium (Dy 2) complexes of 1,5-bis(1'-phenyl-3'-methyl-5'-pyrazolone-4')-1,5-pentanedione (H 2L), Dy 2L 3·2H 2O and Dy 2L 3·5DMF (DMF = dimethylformamide), have been synthesized. The crystal structure of Dy 2L 3·5DMF was determined by X-ray diffraction. Crystals are triclinic, space group P1¯, with a = 16.99(1), b = 17.970(9), c = 18.28(1) Å, α = 110.36(4), β = 101.47(6), γ = 111.11(5)°, V = 4533(9) Å 3, Mr = 2017.91, Z = 2, D x = 1.48 g cm -3, μ = 17.22 cm -1, F(000) = 2056, R = 0.074 with 3804 reflections used in the refinement. In the complex, each L bonds two dysprosium atoms with its two β-diketone groups. Two DMF solvent molecules bond to each dysprosium ion. The coordination number of the two dysprosium ions is eight. The eight oxygen atoms around the dysprosium ion make up a distorted square antiprism coordination polyhedron. The resonance structures of coordinated β-diketonates are also discussed. Different lanthanide ions may stabilize the specific structure.

  10. Scanning Electron Microscope-Cathodoluminescence Analysis of Rare-Earth Elements in Magnets.

    Science.gov (United States)

    Imashuku, Susumu; Wagatsuma, Kazuaki; Kawai, Jun

    2016-02-01

    Scanning electron microscope-cathodoluminescence (SEM-CL) analysis was performed for neodymium-iron-boron (NdFeB) and samarium-cobalt (Sm-Co) magnets to analyze the rare-earth elements present in the magnets. We examined the advantages of SEM-CL analysis over conventional analytical methods such as SEM-energy-dispersive X-ray (EDX) spectroscopy and SEM-wavelength-dispersive X-ray (WDX) spectroscopy for elemental analysis of rare-earth elements in NdFeB magnets. Luminescence spectra of chloride compounds of elements in the magnets were measured by the SEM-CL method. Chloride compounds were obtained by the dropwise addition of hydrochloric acid on the magnets followed by drying in vacuum. Neodymium, praseodymium, terbium, and dysprosium were separately detected in the NdFeB magnets, and samarium was detected in the Sm-Co magnet by the SEM-CL method. In contrast, it was difficult to distinguish terbium and dysprosium in the NdFeB magnet with a dysprosium concentration of 1.05 wt% by conventional SEM-EDX analysis. Terbium with a concentration of 0.02 wt% in an NdFeB magnet was detected by SEM-CL analysis, but not by conventional SEM-WDX analysis. SEM-CL analysis is advantageous over conventional SEM-EDX and SEM-WDX analyses for detecting trace rare-earth elements in NdFeB magnets, particularly dysprosium and terbium.

  11. Material flow analysis of NdFeB magnets for Denmark: a comprehensive waste flow sampling and analysis approach.

    Science.gov (United States)

    Habib, Komal; Schibye, Peter Klausen; Vestbø, Andreas Peter; Dall, Ole; Wenzel, Henrik

    2014-10-21

    Neodymium-iron-boron (NdFeB) magnets have become highly desirable for modern hi-tech applications. These magnets, in general, contain two key rare earth elements (REEs), i.e., neodymium (Nd) and dysprosium (Dy), which are responsible for the very high strength of these magnets, allowing for considerable size and weight reduction in modern applications. This study aims to explore the current and future potential of a secondary supply of neodymium and dysprosium from recycling of NdFeB magnets. For this purpose, material flow analysis (MFA) has been carried out to perform the detailed mapping of stocks and flows of NdFeB magnets in Denmark. A novel element of this study is the value added to the traditionally practiced MFAs at national and/or global levels by complementing them with a comprehensive sampling and elemental analysis of NdFeB magnets, taken out from a sample of 157 different products representing 18 various product types. The results show that the current amount of neodymium and dysprosium in NdFeB magnets present in the Danish waste stream is only 3 and 0.2 Mg, respectively. However, this number is estimated to increase to 175 Mg of neodymium and 11.4 Mg of dysprosium by 2035. Nevertheless, efficient recovery of these elements from a very diverse electronic waste stream remains a logistic and economic challenge.

  12. Evidence for triaxial deformation near N=86 : Collective bands in Dy-152,Dy-153 and Ho-153

    NARCIS (Netherlands)

    Appelbe, DE; Twin, PJ; Beausang, CW; Cullen, DM; Curien, D; Duchene, G; Erturk, S; Finck, C; Haas, B; Paul, ES; Radford, DC; Rigollet, C; Smith, MB; Stezowski, O; Waddington, JC; Wilson, AN

    2002-01-01

    The N=86,87 isotopes of dysprosium and holmium have been investigated using the Eurogam II gamma-ray spectrometer. A new collective rotational band has been observed in Ho-153 and the previously observed nui(13/2) band in Dy-153 has been extended to much higher spin. Comparing these bands and

  13. Using T2-Exchange from Ln3+DOTA-Based Chelates for Contrast-Enhanced Molecular Imaging of Prostate Cancer with MRI

    Science.gov (United States)

    2016-04-01

    specific ana - tomic features or dynamic processes. The most widely used MRI contrast agents consist of various chelated forms of Gd3þ where the...Vymazal J, Holla M, Frank JA. Dysprosium-DOTA-PAMAM dendrimers as macromolecu- lar T2 contrast agents - preparation and relaxometry. Invest Radiol

  14. Preparation, Structure Characterization and Thermal Decomposition ...

    African Journals Online (AJOL)

    NJD

    The unit cell contains a dinuclear molecule of the title compound. ... The carboxylate groups are bonded to the dysprosium ions in two modes: chelating bidentate ..... 5 R.F. Wang, L.S. Li, L.P. Jin and S.Z. Lu,J. Rare Earths,1998,16, 149–152.

  15. Market Review

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ Rare earth market went downward recently.Consumers worried about the continuous price falling in the following one month and were not active in the purchasing.Price of southern ion adsorption clay dropped as well,which consequently resulted in the falling of dysprosium and terbium.

  16. 香烟对大鼠肺及A549细胞IL-1,6,8表达影响的实验研究%Influence of cigarette smoke on the expression of IL-1, 6, 8 in rats' lungs and A549 cell

    Institute of Scientific and Technical Information of China (English)

    李文芳; 万丹; 刘福荣; 石梦蝶

    2012-01-01

    目的 研究香烟烟气对肺部炎性介质IL-1,IL-6,IL-8表达的影响.方法 (1)建立动物长期吸烟模型,用放射免疫法检测肺灌洗液(BALF)中IL-1,IL-6,IL-8的表达水平.(2)制备香烟烟气提取物(CSE)并用它染毒A549细胞,检测细胞上清液中IL-1,IL-6,Ⅱ-8的含量.结果 动物吸烟各剂量组IL-1表达水平与对照组相比差异无统计学意义(P>0.05),低、中、高剂量组IL-6,IL-8水平显著升高,差异有统计学意义(P<0.05).CSE染毒的A549细胞培养上清液中IL-1表达水平与对照组相比差异无统计学意义(P>0.05),20%、50%、100%CSE组IL-6的表达水平明显升高,IL-8表达水平下降,差异有统计学意义(P<0.05).结论 香烟对肺部炎性介质IL-6,IL-8的表达有影响.%OBJECTIVE To investigate the influence of cigarette smoke on the expression of inflammatory mediators in lungs. METHODS The animal model of smoking was established. Each group of rats was given smoking by the respective doses for 12 weeks. IL-1, IL-6 and IL-8 in bronchoalveolar lavage fluid (BALF) were detected by radiation immune method. Human lung adenocarcinoma A549 cells were cultured. Mainstream smoke was collected by using dimethyl sulfoxide (DMSO) as absorbent AS49 cells were incubated with different concentrations of CSE (cigarette smoke extract) . After 4 hours the level of 1L-1, IL-6 and IL-8 was measured with radioimmunoassay. RESULTS The expression of IL-1 in A549 cells with different concentrations of CSE had no difference with the control cells (P > 0.05). Compared with the control group, the IL-6 expressions of 20%, 50%, 100% concentrations increased (P 0.05). The levels of IL-6 and IL-8 in BALF increased significantly in high-dose group, middle-dose group and low-dose group respectively compared to that of Control group (P < 0.05). CONCLUSION Cigarette smoke could influence the expression of IL-6 and IL-8 in lungs.

  17. PROVÁVEL RESERVA NEUROFISIOLÓGICA NA EXECUÇÃO DE EXERCÍCIOS AERÓBIOS MÁXIMOS - DOI: http://dx.doi.org/10.18511/0103-1716/rbcm.v22n1p168-174

    OpenAIRE

    Fernando Lopes e Silva-Junior; UNIVERSIDADE CATOLICA DE BRASILIA; ; GRUPO DE ESTUDOS EM PSICOFISIOLOGIA DO EXERCÍCIO (GEPsE); Fabiano Aparecido Pinheiro; UNIVERSIDADE DE SÃO PAULO; ; GRUPO DE ESTUDOS EM PSICOFISIOLOGIA DO EXERCÍCIO (GEPsE); Renato André Sousa da Silva; UNIVERSIDADE CATOLICA DE BRASILIA; ; GRUPO DE ESTUDOS EM PSICOFISIOLOGIA DO EXERCÍCIO (GEPsE); Bruno Ryker; UNIVERSIDADE CATOLICA DE BRASILIA; ; GRUPO DE ESTUDOS EM PSICOFISIOLOGIA DO EXERCÍCIO (GEPsE); Bruno Ferreira Viana; UNIVERSIDADE GAMA FILHO; ; GRUPO DE ESTUDOS EM PSICOFISIOLOGIA DO EXERCÍCIO (GEPsE); Andressa Magda Gemelli; UNIVERSIDADE CATOLICA DE BRASILIA; ; GRUPO DE ESTUDOS EM PSICOFISIOLOGIA DO EXERCÍCIO (GEPsE); Carlos Ugrinowitsch; UNIVERSIDADE DE SÃO PAULO; Flávio de Oliveira Pires; ESCOLA DE ARTES, CIÊNCIAS E HUMANIDADES (EACH), UNIVERSIDADE DE SÃO PAULO; GRUPO DE ESTUDOS EM PSICOFISIOLOGIA DO EXERCÍCIO (GEPsE)

    2014-01-01

    O modelo tradicional de fisiologia do exercício assume que existe um limite periférico (muscular) em todo exercício aeróbio máximo, devido à hipóxia severa causada pela oferta inadequada de oxigênio ao músculo esquelético. Este evento seria coincidente com o recrutamento de todas as unidades motoras disponíveis no músculo ativo, no mesmo instante. Entretanto, evidências recentes não se ajustam a estas predições. Pelo contrário, um modelo de regulação central do esforço defende a existência de...

  18. La méthode hydrogéomorphologique de détermination des zones inondables. Publié par Physio-Géo - collection Ouvrages, 2011, 168 p.En ligne sur : www.physio-geo.fr (onglet "Ouvrages".

    Directory of Open Access Journals (Sweden)

    Jean-Louis Ballais

    2011-03-01

    Full Text Available L'ouvrage fait le point sur les développements de la méthode mise au point dans les années 1980 et présentée en détail pour la première fois en 1996. Il s'organise en deux grandes parties : la présentation de la méthode hydrogéomorphologique de détermination des zones inondables et les applications de cette méthode.La première partie justifie d'abord la nécessité de mettre au point et d'utiliser une nouvelle méthode face aux insuffisances des méthodes hydrologiques-hydrauliques utilisées en France (et très généralement dans le monde pour la prévision et la prévention des risques d'inondation.Elle présente ensuite les principes de la méthode (chapitre II. C'est ainsi qu'elle consacre un long développement au rôle fondamental de la géomorphologie, tout particulièrement aux quatre lits qu'un cours d'eau peut occuper en fonction de son débit, lits déterminés par l'analyse de la microtopographie de la plaine alluviale fonctionnelle complétée par leur caractérisation sédimentologique. L'influence de la lithologie et de la tectonique est ensuite évoquée. Un deuxième sous-chapitre présente les critères complémentaires : la couverture végétale naturelle et l'occupation humaine au travers de la localisation des constructions, des vestiges historiques et archéologiques, de l'adaptation de l'activité agricole aux caractéristiques de la plaine alluviale et de la structure du parcellaire. Un troisième sous-chapitre regroupe les facteurs de variation : les grandes zones climatiques et les facteurs anthropiques (travaux et ouvrages hydrauliques, pratiques agricoles, imperméabilisation des sols due à l'urbanisation. Enfin, l'évolution au cours de la période historique des unités hydrogéomorphologiques principales, lit mineur et lit majeur, est présentée.Le court chapitre III met en relation l'hydrogéomorphologie et le fonctionnement hydraulique à l'échelle des unités hydrogéomorphologiques puis au niveau de la modélisation.La deuxième partie présente les trois principales applications de la méthode : la cartographie des zones inondables, la méthode intégrée et l'aménagement.La cartographie des zones inondables est actuellement la principale application, grâce à son intégration dans la politique de prévision et de prévention des risques d'inondation en France depuis 1995. Le chapitre qui lui est consacré s'articule en trois ensembles. Le premier est un rappel critique des moyens techniques d'acquisition des données : cartes, photographies aériennes, imagerie satellite en plein développement, données relatives aux crues historiques, observations de terrain. Le deuxième sous-chapitre détaille la cartographie des données sous la forme de la carte hydrogéomorphologique ou carte d'inondabilité hydrogéomorphologique en faisant l'historique et la critique de la légende proposée par le Ministère de l'Écologie français, puis en traitant plusieurs problèmes de cartographie : l'exhaussement du lit majeur, l'adoucissement du talus externe de la plaine alluviale fonctionnelle par le ruissellement diffus, le recouvrement du talus de la terrasse alluviale par le colluvionnement, la représentation du lit majeur exceptionnel et de la terrasse alluviale holocène, le cas spécifique des vallons secs. Enfin, les premières cartographies réalisées à l'étranger sont présentées. Un court dernier sous-chapitre traite de l'interprétation, qualitative et semi-quantitative, de la carte hydrogéomorphologique.La méthode intégrée, qui reste pour l'essentiel au stade expérimental, est présentée dans le chapitre II : d'abord ses origines, puis ses principes, puis ses premières applications prometteuses en France.Le chapitre III regroupe les potentialités, importantes mais peu exploitées, de la méthode hydrogéomorphologique pour l'aménagement des plaines alluviales, en insistant sur deux points : les conséquences de l'exhaussement des lits majeurs et le fonctionnement des cours d'eau pendant les crues exceptionnelles.La conclusion

  19. Person-centred Teams: A Practical Guide to Delivering Personalisation through Effective Team-work Sanderson Helen and Lepkowsky Mary Beth Person-centred Teams: A Practical Guide to Delivering Personalisation through Effective Team-work 168pp £19.99 Jessica Kingsley 9781849054553 184905455X [Formula: see text].

    Science.gov (United States)

    2014-10-30

    FIRMLY ROOTED in the positive psychology paradigm, this practical guide begins by describing the development of personal profiles for team members. It then takes the reader through the person-centred teams framework.

  20. Case note: ICC (Appeals Ch.) (Situation in Democratic Republic of the Congo, Prosecutor v VPRS1 and ors, Judgment on the Prosecutor's Application for Extraordinary Review of Pre-Trial Chamber I's 31 March 2006 Decision Denying Leave to Appeal, Case No ICC-01/04-168)

    NARCIS (Netherlands)

    Zeegers, K.

    2012-01-01

    Whether Article 82(1)(d) of the Rome Statute conferred a right to appeal interlocutory decisions. Whether there was a gap in the Rome Statute such that decisions denying leave to appeal were not subject to any form of appellate review. Whether a general principle of law existed that required the pos

  1. Lipooligosaccharides (LOS) of Neisseria gonorrhoeae and Neisseria meningitidis have components that are immunochemically similar to precursors of human blood group antigens. Carbohydrate sequence specificity of the mouse monoclonal antibodies that recognize crossreacting antigens on LOS and human erythrocytes [published erratum appears in J Exp Med 1988 Oct 1;168(4):1517

    OpenAIRE

    1988-01-01

    We have used mouse mAbs, 3F11 and 06B4, that are specific for highly conserved epitopes of Neisseria gonorrhoeae lipooligosaccharides (LOS) to identify immunochemically similar structures on human erythrocytes. mAb 3F11 agglutinated erythrocytes from all randomly selected adult humans, while mAb 06B4 agglutinated only 80% of the same specimens. The antibodies had an activity with erythrocytes similar to human cold agglutinins in that agglutination occurred at 4 degrees C and decreased with in...

  2. Preventing Workplace Bullying: An Evidence-Based Guide for Managers and Employees Carlo Caponecchia Preventing Workplace Bullying: An Evidence-Based Guide for Managers and Employees and Anne Wyatt Routledge £14.99 | 168pp 9780415668811 0415668816 [Formula: see text].

    Science.gov (United States)

    2012-01-26

    BULLYING CAN make life unbearable for its targets and undermine the effective functioning of organisations. This book is a clear and well-referenced guide to the prevention and consequences of workplace bullying, and includes a range of useful case studies.

  3. PubMed Central: An Essential Resource for Information Professionals and Researchers. A Review of: Cornell, A., Bushman, B., & Womack, K. (2011. Analysis of journals that did not meet selection criteria for inclusion in the National Library of Medicine collection but have manuscripts in PubMed Central. Journal of the Medical Library Association, 99, 168-170.

    Directory of Open Access Journals (Sweden)

    Joanne L. Jordan

    2013-06-01

    Full Text Available Objective – A review of the journals containing research listed in PubMed Central (PMC, but not selected for inclusion in the National Library of Medicine (NLM collection. The authors identified reasons why journals had not been included in the collection and if any met the NLM selection criteria and were appropriate for inclusion.Design – Descriptive study.Setting – National Library of Medicine, United States.Subjects – 571 journals that were not included in the NLM collection but had research articles in PMC.Methods – In October 2009, a report was produced from the NLM library system listing journals tagged as having articles in PMC and not being in the NLM collection. Information was gathered on the journals identified and these were checked against the Collection Development Manual of the NLM and the NLM checklist used for selecting electronic journals. The reason for non-selection of the journal was recorded and the subject category, according to the Library of Congress Classification, was noted. Recorded reasons why journals were not selected:• Less than 15% of articles were within scope of NLM collection• Not enough articles published• Coverage (lacking original research or not for a scholarly audience• Insufficient information to determine reasonFor journals where the criteria seemed to be met, the decision on selection to the NLM collection was reviewed.Main Results – The authors identified 571 journals that had articles in PMC but did not meet the criteria for inclusion in the NLM journal collection. The majority of these journals (73% were outside the NLM scope and a further 10% had not published a sufficient number of articles to be considered. A further 3% were assessed as not intended for a scholarly audience or lacked original research and another 3% could not be reviewed due to lack of information available. There were 65 journals (11% that were referred for further review as the selection criteria seemed to be met and 11 of these journals have subsequently been added to the NLM collection. This is in relation to 482 new print and electronic journals in total that were added to the NLM collection in 2009.However, only 369 of the 571 journals (65% had one or more articles included in PMC; of these, 238 had one article and 33 had more than four articles in the archive. The reason that some journals had no articles in PMC at the time of this review was due to the time it takes to process new articles and embargos set by the publishers that restrict immediate listing on open access databases such as PMC. A number of these journals may also be new and may not have had a sufficient number of articles or enough information available to be able to include them in the NLM collection. To add context, the authors state that PMC contained over 115,000 NIH-funded articles by the end of November 2010.The subject areas these non-selected journals were classified under included Engineering (15%; Medicine (14%; Mathematics (10%; Chemistry (10%; and Computer Science (9%. Library Science was assigned to 2% of the journals. The Medicine journals were more likely than those in the other subject areas to be new journals without sufficient articles to be included in the NLM collection.Conclusion – When the journal title is out of the scope of the NLM collection, an individual article in that journal can still be included in PMC. This provides a solution to the problem of how to collect biomedical research that is not published in biomedical journals. This may be more important in the future as the field becomes more interdisciplinary. This also provides a useful resource for libraries and researchers searching for full-text biomedical articles.The authors conclude that analyzing the articles from the journals not selected for inclusion in the NLM collection will provide helpful information about the types of biomedical research being published in non-biomedical journals. This will highlight particular areas the NLM should pay attention to in the future.

  4. Material Flow Analysis of NdFeB magnets for Denmark: A comprehensive waste flow sampling and analysis approach

    DEFF Research Database (Denmark)

    Habib, Komal; Schibye, Peter Klausen; Vestbø, Andreas Peter

    2014-01-01

    Neodymium-iron-boron (NdFeB) magnets have become highly desirable for modern hi-tech applications. These magnets, in general, contain two key Rare Earth Elements (REEs) i.e. neodymium (Nd) and dysprosium (Dy), which are responsible for the very high strength of these magnets allowing for consider......Neodymium-iron-boron (NdFeB) magnets have become highly desirable for modern hi-tech applications. These magnets, in general, contain two key Rare Earth Elements (REEs) i.e. neodymium (Nd) and dysprosium (Dy), which are responsible for the very high strength of these magnets allowing...... of stocks and flows of NdFeB magnets in Denmark. A novel element of this study is the value added to the traditionally practiced MFAs at national and/or global level by complementing them with a comprehensive sampling and elemental analysis of NdFeB magnets, taken out from a sample of 157 different products...

  5. Magnetic Properties of the Dy1-xUxCo3 System

    Science.gov (United States)

    Lupşa, Ileana; Petrişor, T.; Balasz-Mureşan, I.

    The magnetic properties of Dy1-xUxCo3 system were investigated in the 4.3-1150 K temperature range and magnetic field up to 120 kOe. The crystalline structure is rhombohedral of PuNi3 type. For x≤0.8, the samples exhibit a ferrimagnetic behavior. The uranium substitution for dysprosium leads to the decreasing of the exchange field and the reducing of the magnetization and the transition temperatures. The Co mean moments (1.9μB/Co for x=0) opposite to the dysprosium ones and the mean effective Co moments (3.75μB/Co for x=0) are gradually decreasing as Dy is replaced by uranium.

  6. Tetraanionic biphenyl lanthanide complexes as single-molecule magnets.

    Science.gov (United States)

    Huang, Wenliang; Le Roy, Jennifer J; Khan, Saeed I; Ungur, Liviu; Murugesu, Muralee; Diaconescu, Paula L

    2015-03-02

    Inverse sandwich biphenyl complexes [(NN(TBS))Ln]2(μ-biphenyl)[K(solvent)]2 [NN(TBS) = 1,1'-fc(NSi(t)BuMe2)2; Ln = Gd, Dy, Er; solvent = Et2O, toluene; 18-crown-6], containing a quadruply reduced biphenyl ligand, were synthesized and their magnetic properties measured. One of the dysprosium biphenyl complexes was found to exhibit antiferromagnetic coupling and single-molecule-magnet behavior with Ueff of 34 K under zero applied field. The solvent coordinated to potassium affected drastically the nature of the magnetic interaction, with the other dysprosium complex showing ferromagnetic coupling. Ab initio calculations were performed to understand the nature of magnetic coupling between the two lanthanide ions bridged by the anionic arene ligand and the origin of single-molecule-magnet behavior.

  7. Development of a coprecipitation system for the speciation/preconcentration of chromium in tap waters

    Energy Technology Data Exchange (ETDEWEB)

    Karatepe, Aslihan, E-mail: karatepea@gmail.com [Nevsehir University, Faculty of Science and Arts, Department of Chemistry, 50000 Nevsehir (Turkey); Korkmaz, Esra [Bozok University, Faculty of Science and Arts, Department of Chemistry, Yozgat (Turkey); Soylak, Mustafa [Erciyes University, Faculty of Science and Arts, Chemistry Department, 38039 Kayseri (Turkey); Elci, Latif [Pamukkale University, Faculty of Science and Arts, Department of Chemistry, 20020 Denizli (Turkey)

    2010-01-15

    A method for the speciation of chromium(III), chromium(VI) and determination of total chromium based on coprecipitation of chromium(III) with dysprosium hydroxide has been investigated and applied to tap water samples. Chromium(III) was quantitatively recovered by the presented method, while the recovery values for chromium(VI) was below 10%. The influences of analytical parameters including amount of dysprosium(III), pH, centrifugation speed and sample volume for the quantitative precipitation were examined. No interferic effects were observed from alkali, earth alkali and some transition metals for the analyte ions. The detection limits (k = 3, N = 15) were 0.65 {mu}g/L for chromium(III) and 0.78 {mu}g/L for chromium(VI). The validation of the presented method was checked by the analysis of certified reference materials.

  8. Development of bulk metallic glasses based on the Dy-Al binary eutectic composition

    Institute of Scientific and Technical Information of China (English)

    LUO Lin; TIAN Rui; XIAO Xueshan

    2008-01-01

    A series of dysprosium-based ternary, quadruple, and quintuple bulk metallic glasses (BMGs) based on Dy-Al binary eutectic compo-sition were obtained with the partial substitution of Co, Gd, and Ni elements, for dysprosium. The results showed that the Dy31Gd25Co20Al24 alloy, which had the best glass forming ability (GFA), could be cast into an amorphous rod with a diameter of 5 mm. The GFA of alloys was evaluated on the basis of the supercooled liquid region width, γ parameter, the formation enthalpy, and the equivalent electronegativity difference of amor-phous alloys. It was found that the eutectic composition was closely correlated with the GFA of the Dy-based BMGs.

  9. Dysprosium carbide iodides Dy{sub 10}(C{sub 2}){sub 2}I{sub 18}, Dy{sub 4}(C{sub 2})I{sub 6} and Dy{sub 12}(C{sub 2}){sub 3}I{sub 17}; Dysprosiumcarbidiodide Dy{sub 10}(C{sub 2}){sub 2}I{sub 18}, Dy{sub 4}(C{sub 2})I{sub 6} und Dy{sub 12}(C{sub 2}){sub 3}I{sub 17}

    Energy Technology Data Exchange (ETDEWEB)

    Mattausch, H.; Hoch, C.; Simon, A. [Max-Planck-Institut fuer Festkoerperforschung, Stuttgart (Germany)

    2007-02-15

    The title compounds are formed by reaction of DyI{sub 3}, Dy metal and C in stoichiometric amounts in closed Ta ampoules, Dy{sub 10}(C{sub 2}){sub 2}I{sub 18} at 930 C for 7 days, Dy{sub 4}(C{sub 2})I{sub 6} at 950 C for 6 days and Dy{sub 12}(C{sub 2}){sub 3}I{sub 17} at 900 C for 11 days as pure samples according to X-ray powder diffraction. Dy{sub 10}(C{sub 2}){sub 2}I{sub 18} crystallizes in space group P2{sub 1}/c with a = 10.470(2), b = 17.152(3), c = 13.983(3) Aa and {beta} = 121.14(3) , Dy{sub 4}(C{sub 2})I{sub 6} in Pnnm with a = 13.622(3), b = 14.335(3) and c = 8.396(2) Aa, and Dy{sub 12}(C{sub 2}){sub 3}I{sub 17} in C2/c with a = 19.149(4), b = 12.069(2), c = 18.595(4) Aa, and {beta} = 90.54(3) . The crystal structure of Dy{sub 10}(C{sub 2}){sub 2}I{sub 18} is composed of Dy double octahedra centered by (C{sub 2}){sup 6-} groups (ethanide) with the iodide ions above the edges and the corners of the Dy{sub 10}(C{sub 2}){sub 2} units. In Dy{sub 4}(C{sub 2})I{sub 6} the Dy atoms form chains of trans-edge sharing octahedra with embedded (C{sub 2}) groups. In the structure of Dy{sub 12}(C{sub 2}){sub 3}I{sub 17} alternately cis-, trans-edge-condensed Dy{sub 6} octahedra centered by (C{sub 2}) groups occur. The iodine atoms surround the chains like in the M{sub 6}X{sub 12} cluster and interconnect neighboring chains. (orig.)

  10. Concepts for using trapped-flux bulk high-temperature superconductor in motors and generators

    Science.gov (United States)

    Hull, John R.; Strasik, Michael

    2010-12-01

    We review previous concepts for using bulk high-temperature superconductors (HTSs) in motors and generators and discuss methods for using trapped-flux (TF) HTSs in motors and generators that have been recently investigated in our laboratory. We examine the expected performance of a brushless motor/generator that uses TF bulk HTSs to provide magnetomotive force, where the stator windings are used to create the TF. A key feature is the use of dysprosium for the stator and rotor cores.

  11. Concepts for using trapped-flux HTS in motors and generators

    Science.gov (United States)

    Hull, John R.; Strasik, Michael

    2013-01-01

    We examine the expected performance of a brushless motor/generator that uses trapped-flux (TF) bulk high-temperature superconductors (HTSs) to provide magnetomotive force, where the stator windings are used to create the TF. A key feature is the use of dysprosium (Dy) for the stator and rotor cores. We also examine methods to energize TF in HTS for generators used in pulsed-power applications.

  12. Concepts for using trapped-flux bulk high-temperature superconductor in motors and generators

    Energy Technology Data Exchange (ETDEWEB)

    Hull, John R; Strasik, Michael [Boeing Research and Technology, PO Box 3707, MC 2T-50, Seattle, WA 98124-2207 (United States)

    2010-12-15

    We review previous concepts for using bulk high-temperature superconductors (HTSs) in motors and generators and discuss methods for using trapped-flux (TF) HTSs in motors and generators that have been recently investigated in our laboratory. We examine the expected performance of a brushless motor/generator that uses TF bulk HTSs to provide magnetomotive force, where the stator windings are used to create the TF. A key feature is the use of dysprosium for the stator and rotor cores.

  13. Rare earth optogalvanic spectroscopy: preliminary results

    Energy Technology Data Exchange (ETDEWEB)

    Destro, Marcelo G.; Neri, Jose W.; Rodrigues, Nicolau A.S.; Silveira, Carlos A.B.; Riva, Rudimar [Instituto de Estudos Avancados (IEAv/EFO), Sao Jose dos Campos, SP (Brazil). Div. de Fotonica]. E-mail: destro@ieav.cta.br; Victor, Alessandro R. [Instituto Tecnologico de Aeronautica (ITA), Sao Jose dos Campos, SP (Brazil)

    2008-07-01

    The IEAv has special interest in the studies of rare earth isotope applications in laser medium and integrated optics as well as aerospace research. We are starting to work with Ytterbium, Erbium, Dysprosium and Neodymium laser selective photoionization research. This paper describes the preliminary results of emission and optogalvanic spectroscopy obtained from a Neodymium hollow cathode lamps. Furthermore these results were used to setup our laser systems to work to leads a Nd isotopes selective laser photoionization. (author)

  14. Rotating Magnetocaloric Effect in an Anisotropic Molecular Dimer.

    Science.gov (United States)

    Lorusso, Giulia; Roubeau, Olivier; Evangelisti, Marco

    2016-03-01

    In contrast to the mainstream research on molecular refrigerants that seeks magnetically isotropic molecules, we show that the magnetic anisotropy of dysprosium acetate tetrahydrate, [{Dy(OAc)3 (H2 O)2}2]⋅4 H2O (1), can be efficiently used for cooling below liquid-helium temperature. This is attained by rotating aligned single-crystal samples in a constant applied magnetic field. The envisioned advantages are fast cooling cycles and potentially compact refrigerators.

  15. Energy dependence of thermoluminescent response of CaSO{sub 4}:Dy, LiF:Mg and micro LiF:Mg,Ti in clinical beams of electrons by using different simulator objects; Dependencia energetica da resposta TL de dosimetros de CaSO{sub 4}:Dy, LiF:Mg e microLiF:Mg,Ti em feixes clinicos de eletrons utilizando diferentes objetos simuladores

    Energy Technology Data Exchange (ETDEWEB)

    Bravim, Amanda; Campos, Leticia Lucente, E-mail: abravin@ipen.b, E-mail: rsakuraba@einstein.b, E-mail: lcrodri@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil); Sakuraba, Roberto K.; Cruz, Jose Carlos da, E-mail: rsakuraba@einstein.b, E-mail: josecarlosc@einstein.b [Hospital Israelita Albert Einstein (HIAE), Sao Paulo, SP (Brazil)

    2011-10-26

    Yet not so widely applied in radiotherapy, the calcium sulfate doped with dysprosium (CaSO{sub 4}:Dy) is used in radioprotection and studies has been demonstrated its great potential for the dosimetry in radiotherapy. This work evaluates the energy dependence of the thermoluminescent answer of the CaSO{sub 4}:D, LiF:Mg,Ti (TLD-100) and micro LiF:Mg,Ti in clinical beams of electrons by using water simulators, PMMA and solid water

  16. Surface analysis of model systems: From a metal-graphite interface to an intermetallic catalyst

    Energy Technology Data Exchange (ETDEWEB)

    Kwolek, Emma J. [Iowa State Univ., Ames, IA (United States)

    2016-10-25

    This thesis summarizes research completed on two different model systems. In the first system, we investigate the deposition of the elemental metal dysprosium on highly-oriented pyrolytic graphite (HOPG) and its resulting nucleation and growth. The goal of this research is to better understand the metal-carbon interactions that occur on HOPG and to apply those to an array of other carbon surfaces. This insight may prove beneficial to developing and using new materials for electronic applications, magnetic applications and catalysis.

  17. New Realities: Energy Security in the 2010s and Implications for the U.S. Military

    Science.gov (United States)

    2014-01-01

    of the main renewable energy technologies (RETs)—such as wind power or photovoltaics (PV)—used in electric power generation. Wind turbines , PV... turbines and e-vehicle motors, and neodymium is a light REE used in the same applications as dysprosium as well as in e-vehicle batteries. China supplies...energy sector. For example, supercomputing is a key component to seismic analysis; refineries are increasingly driven by Supervisory Control and Data

  18. Properties of strongly dipolar Bose gases beyond the Born approximation

    CERN Document Server

    Ołdziejewski, Rafał

    2016-01-01

    Strongly dipolar Bose gases can form liquid droplets stabilized by quantum fluctuations. In theoretical description of this phenomenon, low energy scattering amplitude is utilized as an effective potential. We show that for magnetic atoms corrections with respect to Born approximation arise, and derive modified pseudopotential using realistic interaction model. We discuss the resulting changes in collective mode frequencies and droplet stability diagram. Our results are relevant for recent experiments with erbium and dysprosium atoms.

  19. Thermokinetics of Liquid-Liquid Reaction of Dy(NO3)3 with Histidine

    Institute of Scientific and Technical Information of China (English)

    李仲谨; 陈三平; 房艳; 高胜利

    2003-01-01

    The thermokinetics of liquid-liquid reaction of dysprosium nitrate with histidine were studied using a microcalorimeter. On the basis of experimental and calculated results, three thermodynamic parameters (the activation enthalpy, the activation entropy and the activation free energy), the rate constant, three kinetic parameters (the activation energy, the pre-exponential constant and the reaction order) were obtained. On the basis of thermodynamics and kinetics, the formation reaction of the complex was discussed.

  20. China rare earth market review

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    Rare earth market remained weak recently. Dealings of light and heavy rare earth products were sluggish. Demand for didymium and dysprosium related products was soft and purchasers were not interested in replenishing their stocks. The market of NdFeB magnetic materials and phosphors remained inactive. Meanwhile, ceramic, catalyst and polishing powder industries were weak. Affected by global economical recession, export market of rare earth remained weak.

  1. China Rare Earth Market Review

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    November 20-30.2011 Weak demand resulted in the slack rare market. Consumers did not intend to rep earth enish inventories yet and transactions of rare earth products were stagnant. The market of didymium-related products was in the doldrums. Demand for dysprosium-related products was sluggish. Inquiries for europium oxide (99.9%) were few and dealings of the product were difficult.

  2. High Density Ion Implanted Contiguous Disk Bubble Technology.

    Science.gov (United States)

    1985-09-01

    of 0.504pm. A second melt producing films of (Sm1 2Lu 1.7Tm0 . 1( FeGa )5O1 2) was also developed for sub- micron bubbles. Data from films typical of the...Dysprosium film composition was to be (Sm0 .3 Dyl.1 Gd 0 .4Lu0 .7( FeGa ) 50 2) which would have magnetostriction coefficients of -2.8x10 6 and a mismatch of

  3. Single molecule magnet behaviour in a rare trinuclear {Cr(III)Dy} methoxo-bridged complex.

    Science.gov (United States)

    Car, Pierre-Emmanuel; Favre, Annaïck; Caneschi, Andrea; Sessoli, Roberta

    2015-09-28

    The reaction of the chromium(iii) chloride tetrahydrofuran complex with the dipivaloylmethane ligand, the lanthanide alcoholic salt DyCl3·CH3OH and the 1,1,1-tris(hydroxymethyl)-ethane ligand resulted in the formation of a new trinuclear chromium-dysprosium complex. Magnetic investigations revealed that the new 3d-4f complex exhibits single molecule magnet behaviour.

  4. Gclust Server: 27447 [Gclust Server

    Lifescience Database Archive (English)

    Full Text Available 27447 HSA_89042164 Cluster Sequences - 168 XP_932862.1 PREDICTED: similar to meteori...nces - Sequence length 168 Representative annotation XP_932862.1 PREDICTED: similar to meteori

  5. Glass microspheres for medical applications

    Science.gov (United States)

    Conzone, Samuel David

    Radioactive dysprosium lithium borate glass microspheres have been developed as biodegradable radiation delivery vehicles for the radiation synovectomy treatment of rheumatoid arthritis. Once injected into a diseased joint, the microspheres deliver a potent dose of radiation to the diseased tissue, while a non-uniform chemical reaction converts the glass into an amorphous, porous, hydrated dysprosium phosphate reaction product. The non-radioactive, lithium-borate component is dissolved from the glass (up to 94% weight loss), while the radioactive 165Dy reacts with phosphate anions in the body fluids, and becomes "chemically" trapped in a solid, dysprosium phosphate reaction product that has the same size as the un-reacted glass microsphere. Ethylene diamine tetraacetate (EDTA) chelation therapy can be used to dissolve the dysprosium phosphate reaction product after the radiation delivery has subsided. The dysprosium phosphate reaction product, which formed in vivo in the joint of a Sprague-Dawley rat, was dissolved by EDTA chelation therapy in 100 Gy) of localized beta radiation to a treatment site within the body, followed by complete biodegradability. The non-uniform reaction process is a desirable characteristic for a biodegradable radiation delivery vehicle, but it is also a novel material synthesis technique that can convert a glass to a highly porous materials with widely varying chemical composition by simple, low-temperature, glass/solution reaction. The reaction product formed by nonuniform reaction occupies the same volume as the un-reacted glass, and after drying for 1 h at 300°C, has a specific surface area of ≈200 m2/g, a pore size of ≈30 nm, and a nominal crushing strength of ≈10 MPa. Finally, rhenium glass microspheres, composed of micron-sized, metallic rhenium particles dispersed within a magnesium alumino borate glass matrix were produced by sintering ReO2 powder and glass frit at 1050°C. A 50 mg injection of radioactive rhenium glass

  6. Dicty_cDB: [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available VF (Link to library) VFC168 (Link to dictyBase) - - - Contig-U16005-1 VFC168Z (Link... to Original site) - - VFC168Z 357 - - - - Show VFC168 Library VF (Link to library) Clone ID VFC168 (Link to dict...yBase) Atlas ID - NBRP ID - dictyBase ID - Link to Contig Contig-U16005-1 Original site URL http://dict...a002 Brassica oleracea genomic, DNA sequence. 48 0.076 1 AC117075 |AC117075.2 Dictyostelium discoideum chrom...mitochondrial 20.0 %: nuclear 12.0 %: cytoskeletal 4.0 %: peroxisomal >> predicti

  7. Magnetic and structural properties of nano sized Dy-doped cobalt ferrite synthesized by co-precipitation

    Energy Technology Data Exchange (ETDEWEB)

    Karimi, Z., E-mail: Zahra_kr64@yahoo.com [Department of Materials Engineering, Institute of Mechanical Engineering, University of Tabriz, Tabriz 51666-16471 (Iran, Islamic Republic of); Mohammadifar, Y.; Shokrollahi, H. [Electroceramics Group, Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz (Iran, Islamic Republic of); Asl, Sh. Khameneh [Department of Materials Engineering, Institute of Mechanical Engineering, University of Tabriz, Tabriz 51666-16471 (Iran, Islamic Republic of); Yousefi, Gh. [Center for Pharmaceutical Nanotechnology and Biomaterials, Pharmaceutical Sciences Research Center, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz (Iran, Islamic Republic of); Department of Pharmaceutics, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz (Iran, Islamic Republic of); Karimi, L. [Materials Science and Engineering Department, Islamic Azad University Ahvaz Branch, Ahvaz (Iran, Islamic Republic of)

    2014-06-01

    Regarding the various applications of cobalt ferrite as a magnetic ceramic in various scientific and industrial categories, it is essential to modify and optimize its microstructural and magnetic features. Chemical composition (doped elements and their quantities) is a determining factor which has been studied in this research. For this purpose, cobalt-dysprosium ferrite ceramic nanoparticles with the chemical formula Co{sub 1−x}Dy{sub x}Fe{sub 2}O{sub 4} (x=0, 0.01, 0.03, 0.05, 0.1) were synthesized by the co-precipitation chemical method and then analyzed from the structural and magnetic perspectives. The desirable spinel phase formation was confirmed via x-ray diffractometry, and the other crystallographic parameters and cation distribution were calculated. The microscopic image of the samples showed 15 nm particles. The type and strength of the interionic bonds were determined by infrared spectroscopy. The hysteresis loop of the material was affected noticeably by doped elements as the room temperature saturation magnetization was decreased, but the residual magnetization and coercivity of ferrite were promoted by 50 and 150% after adding dysprosium, respectively. The maximum anisotropy constant, which is equal to 19.1 erg/g for undoped cobalt ferrite, was increased to 45.2 erg/g by doping 0.05 dysprosium. It is worth mentioning that introducing dopants into the lattice led to a great decrease in Curie temperature. - Highlights: • Magnetic and structural studies of Dy{sup 3+}–Co–ferrite are investigated. • Simple co-precipitation method involving less energy and low-cost is used. • The nanoparticles with high coercivity, magnetization and loop area are obtained. • The composition Co{sub 0.95}Dy{sub 0.05}Fe{sub 2}O{sub 4} has the maximum coercivity and high residual magnetization.

  8. Anisotropic expansion of a thermal dipolar Bose gas

    CERN Document Server

    Tang, Yijun; Burdick, Nathaniel Q; DiSciacca, Jack M; Petrov, Dmitry S; Lev, Benjamin L

    2016-01-01

    We report on the anisotropic expansion of ultracold bosonic dysprosium gases at temperatures above quantum degeneracy and develop a quantitative theory to describe this behavior. The theory expresses the post-expansion aspect ratio in terms of temperature and microscopic collisional properties by incorporating Hartree-Fock mean-field interactions, hydrodynamic effects, and Bose-enhancement factors. Our results extend the utility of expansion imaging by providing accurate thermometry for dipolar thermal Bose gases, reducing error in expansion thermometry from tens of percent to only a few percent. Furthermore, we present a simple method to determine scattering lengths in dipolar gases, including near a Feshbach resonance, through observation of thermal gas expansion.

  9. Anisotropic Expansion of a Thermal Dipolar Bose Gas.

    Science.gov (United States)

    Tang, Y; Sykes, A G; Burdick, N Q; DiSciacca, J M; Petrov, D S; Lev, B L

    2016-10-07

    We report on the anisotropic expansion of ultracold bosonic dysprosium gases at temperatures above quantum degeneracy and develop a quantitative theory to describe this behavior. The theory expresses the postexpansion aspect ratio in terms of temperature and microscopic collisional properties by incorporating Hartree-Fock mean-field interactions, hydrodynamic effects, and Bose-enhancement factors. Our results extend the utility of expansion imaging by providing accurate thermometry for dipolar thermal Bose gases. Furthermore, we present a simple method to determine scattering lengths in dipolar gases, including near a Feshbach resonance, through observation of thermal gas expansion.

  10. Neutron-scattering study of the magnetic structure of DyFe4Al8 and HoFe4Al8

    DEFF Research Database (Denmark)

    Paixao, J.A.; Silva, M.R.; Sørensen, S.Aa.

    2000-01-01

    at a slightly higher temperature (similar to 80 K) than the dysprosium. At a lower temperature higher-order harmonics of the modulation develop. The magnetic structure of the rare-earth at low temperature is a bunched elliptical cycloid, following the modulation of the Fe sublattice. Although...... the antiferromagnetic coupling of the rare-earth magnetic moments has long-range order, giving sharp magnetic satellites in the diffraction patterns, a non-negligible fraction of the 4f moment does not contribute to these peaks but appears as diffuse scattering beneath the Bra,og peaks. This indicates the presence...

  11. Synthesis and Optimization of the Sintering Kinetics of Actinide Nitrides

    Energy Technology Data Exchange (ETDEWEB)

    Drryl P. Butt; Brian Jaques

    2009-03-31

    Research conducted for this NERI project has advanced the understanding and feasibility of nitride nuclear fuel processing. In order to perform this research, necessary laboratory infrastructure was developed; including basic facilities and experimental equipment. Notable accomplishments from this project include: the synthesis of uranium, dysprosium, and cerium nitrides using a novel, low-cost mechanical method at room temperature; the synthesis of phase pure UN, DyN, and CeN using thermal methods; and the sintering of UN and (Ux, Dy1-x)N (0.7 ≤ X ≤ 1) pellets from phase pure powder that was synthesized in the Advanced Materials Laboratory at Boise State University.

  12. Diagnostics of the plasma parameters based on the K X-ray line positions for various 4d and 4f metals

    Directory of Open Access Journals (Sweden)

    Szymańska Ewa

    2016-12-01

    Full Text Available This paper shows the theoretical predictions of the outer-shell ionization effect on the positions of Kα1,2, Kβ1,3, and K β2 X-ray lines for some 4d-transition metals (molybdenum and palladium and 4f rare-earth elements (dysprosium and ytterbium. The ionization energy shifts have been evaluated using the multiconfiguration Dirac-Fock method, containing Breit interaction and quantum electrodynamic (QED corrections. The presented results are important for obtaining the information about some parameters of plasma generated by different sources, especially by pulsed power machine and short-pulse lasers.

  13. Polyethylene terephthalate thin films; a luminescence study

    Science.gov (United States)

    Carmona-Téllez, S.; Alarcón-Flores, G.; Meza-Rocha, A.; Zaleta-Alejandre, E.; Aguilar-Futis, M.; Murrieta S, H.; Falcony, C.

    2015-04-01

    Polyethylene Terephthalate (PET) films doped with Rare Earths (RE3+) have been deposited on glass by spray pyrolysis technique at 240 °C, using recycled PET and (RE3+) chlorides as precursors. Cerium, terbium, dysprosium and europium were used as dopants materials, these dopants normally produce luminescent emissions at 450, 545, 573 and 612 nm respectively; the doped films also have light emissions at blue, green, yellow and red respectively. All RE3+ characteristic emissions were observed at naked eyes. Every deposited films show a high transmission in the visible range (close 80% T), films surfaces are pretty soft and homogeneous. Films thickness is around 3 μm.

  14. Rare (Earth Elements [score

    Directory of Open Access Journals (Sweden)

    Camilo Méndez

    2014-12-01

    Full Text Available Rare (Earth Elements is a cycle of works for solo piano. The cycle was inspired by James Dillon’s Book of Elements (Vol. I-V. The complete cycle will consist of 14 pieces; one for each selected rare (earth element. The chosen elements are Neodymium, Erbium, Tellurium, Hafnium, Tantalum, Technetium, Indium, Dysprosium, Lanthanium, Cerium, Europium, Terbium, Yttrium and Darmstadtium. These elements were selected due to their special atomic properties that in many cases make them extremely valuable for the development of new technologies, and also because of their scarcity. To date, only 4 works have been completed Yttrium, Technetium, Indium and Tellurium.

  15. China rare earth market review

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Rare earth market remained stagnant recently. The buyers did not show willingness to replenish raw materials affected by weak demand. Most persons in rare earth circle were not confident with the short-term rare earth market. Demand for didymium mischmetal was soft recently. The market of dysprosium related products was quiet and NdFeB magnet producers were inactive in the purchase. Phosphor market was stagnant as well. Buyers were cautious on replenishing the material. There were few inquiries for europium oxide (99.9%) in spot market and transactions were difficult.

  16. Optical characterization of CdSe/Dy3+-doped silica matrices

    Indian Academy of Sciences (India)

    P V Jyothy; P R Rejikumar; Thomas Vinoy; S Kartika; N V Unnikrishnan

    2010-11-01

    Cadmium selenide nanocrystals along with dysprosium ions are doped in silica matrices through sol–gel route. The optical bandgap and size of the CdSe nanocrystals are calculated from the absorption spectrum. The size of the CdSe nanocrystallites is also evaluated from the TEM measurements. The fluorescence intensities are compared for SiO2–Dy3+ and CdSe-doped SiO2–Dy3+. The fluorescence intensity of Dy3+ is considerably increased in the presence of CdSe nanocrystals.

  17. Anisotropic Expansion of a Thermal Dipolar Bose Gas

    Science.gov (United States)

    Tang, Y.; Sykes, A. G.; Burdick, N. Q.; DiSciacca, J. M.; Petrov, D. S.; Lev, B. L.

    2016-10-01

    We report on the anisotropic expansion of ultracold bosonic dysprosium gases at temperatures above quantum degeneracy and develop a quantitative theory to describe this behavior. The theory expresses the postexpansion aspect ratio in terms of temperature and microscopic collisional properties by incorporating Hartree-Fock mean-field interactions, hydrodynamic effects, and Bose-enhancement factors. Our results extend the utility of expansion imaging by providing accurate thermometry for dipolar thermal Bose gases. Furthermore, we present a simple method to determine scattering lengths in dipolar gases, including near a Feshbach resonance, through observation of thermal gas expansion.

  18. Persistent nonequilibrium dynamics of the thermal energies in the spin and phonon systems of an antiferromagnet.

    Science.gov (United States)

    von Reppert, A; Pudell, J; Koc, A; Reinhardt, M; Leitenberger, W; Dumesnil, K; Zamponi, F; Bargheer, M

    2016-09-01

    We present a temperature and fluence dependent Ultrafast X-Ray Diffraction study of a laser-heated antiferromagnetic dysprosium thin film. The loss of antiferromagnetic order is evidenced by a pronounced lattice contraction. We devise a method to determine the energy flow between the phonon and spin system from calibrated Bragg peak positions in thermal equilibrium. Reestablishing the magnetic order is much slower than the cooling of the lattice, especially around the Néel temperature. Despite the pronounced magnetostriction, the transfer of energy from the spin system to the phonons in Dy is slow after the spin-order is lost.

  19. Microscopic Calculation of IBM Parameters by Potential Energy Surface Mapping

    CERN Document Server

    Bentley, I

    2011-01-01

    A coherent state technique is used to generate an Interacting Boson Model (IBM) Hamiltonian energy surface that simulates a mean field energy surface. The method presented here has some significant advantages over previous work. Specifically, that this can be a completely predictive requiring no a priori knowledge of the IBM parameters. The technique allows for the prediction of the low lying energy spectra and electromagnetic transition rates which are of astrophysical interest. Results and comparison with experiment are included for krypton, molybdenum, palladium, cadmium, gadolinium, dysprosium and erbium nuclei.

  20. The magnetostriction of Tb, Dy and Ho revisited

    Energy Technology Data Exchange (ETDEWEB)

    Benito, L; Arnaudas, J I; Ciria, M; Fuente, C de la; Moral, A del [Departamento de Magnetismo de Solidos, Departamento de FIsica de la Materia Condensada-ICMA, Universidad de Zaragoza-CSIC, 50071 Zaragoza (Spain)

    2004-10-06

    In this paper we present re-analyses of magnetostriction measurements earlier performed in terbium, dysprosium and holmium single crystals. In the framework of the standard theory of single-ion crystal-electric-field and two-ion exchange magnetostrictions, we explain the thermal variation of the anisotropic saturation magnetostriction within the basal plane by considering high-order terms in the magnetoelastic energy. Using complementary basal-plane magnetic anisotropy measurements, we have been able to obtain the second- and fourth-order magnetoelastic coupling parameters associated with the orthorhombic distortion of the hexagonal plane for the above-mentioned three heavy rare earths.