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Sample records for dysprosium 156

  1. 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.

  2. {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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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

  10. 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.

  11. 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 ...

  12. 40 CFR 156.159 - Compliance date.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Compliance date. 156.159 Section 156... REQUIREMENTS FOR PESTICIDES AND DEVICES Container Labeling § 156.159 Compliance date. Any pesticide product...(d)(7), 156.10(f), 156.10(i)(2)(ix), 156.140, 156.144, 156.146, and 156.156. Effective Date Note:...

  13. 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.

  14. 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.

  15. 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.

  16. 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

  17. 40 CFR 205.156 - [Reserved

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    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false 205.156 Section 205.156 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) NOISE ABATEMENT PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Motorcycles § 205.156...

  18. 32 CFR 156.4 - Responsibilities.

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    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Responsibilities. 156.4 Section 156.4 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY DEPARTMENT OF DEFENSE PERSONNEL SECURITY PROGRAM (DoDPSP) § 156.4 Responsibilities. (a) The Assistant Secretary of Defense for...

  19. 21 CFR 156.145 - Tomato juice.

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    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Tomato juice. 156.145 Section 156.145 Food and... CONSUMPTION VEGETABLE JUICES Requirements for Specific Standardized Vegetable Juices § 156.145 Tomato juice. (a) Identity—(1) Definition. Tomato juice is the food intended for direct consumption, obtained...

  20. 47 CFR 69.156 - Marketing expenses.

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    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Marketing expenses. 69.156 Section 69.156... Computation of Charges for Price Cap Local Exchange Carriers § 69.156 Marketing expenses. Effective July 1, 2000, the marketing expenses formerly allocated to the common line and traffic sensitive baskets,...

  1. 40 CFR 156.64 - Signal word.

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    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Signal word. 156.64 Section 156.64... REQUIREMENTS FOR PESTICIDES AND DEVICES Human Hazard and Precautionary Statements § 156.64 Signal word. (a... signal word, reflecting the highest Toxicity Category (Category I is the highest toxicity category) to...

  2. 33 CFR 156.310 - Prohibited areas.

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    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Prohibited areas. 156.310 Section... the Gulf of Mexico § 156.310 Prohibited areas. Lightering operations are prohibited within the following areas in the Gulf of Mexico: (a) Claypile—prohibited area. This prohibited area consists of...

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. 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)

  17. Dicty_cDB: VFL156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available VF (Link to library) VFL156 (Link to dictyBase) - - - Contig-U15456-1 VFL156P (Link to Original site) VFL1...56F 673 VFL156Z 625 VFL156P 1278 - - Show VFL156 Library VF (Link to library) Clone ID VFL1...e URL http://dictycdb.biol.tsukuba.ac.jp/CSM/VF/VFL1-C/VFL156Q.Seq.d/ Representative seq. ID VFL1...56P (Link to Original site) Representative DNA sequence >VFL156 (VFL156Q) /CSM/VF/VFL1-C/VFL1...fifkieiklnnrtiyvxlff Homology vs CSM-cDNA Score E Sequences producing significant alignments: (bits) Value VFL156 (VFL1

  18. 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.

  19. 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.

  20. 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.

  1. 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.

  2. 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.

  3. 45 CFR 400.156 - Service requirements.

    Science.gov (United States)

    2010-10-01

    ...-specific services which are designed specifically to meet refugee needs and are in keeping with the rules... CHILDREN AND FAMILIES, DEPARTMENT OF HEALTH AND HUMAN SERVICES REFUGEE RESETTLEMENT PROGRAM Refugee Social Services Scope of Refugee Social Services § 400.156 Service requirements. (a) In order to avoid...

  4. 40 CFR 156.203 - Definitions.

    Science.gov (United States)

    2010-07-01

    ... Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS LABELING REQUIREMENTS FOR PESTICIDES AND DEVICES Worker Protection Statements § 156.203 Definitions. Terms in this subpart have the same meanings as they do in the Federal Insecticide, Fungicide, and Rodenticide Act,...

  5. 40 CFR 82.156 - Required practices.

    Science.gov (United States)

    2010-07-01

    ...-contained recovery or recycling equipment available at their place of business. Persons who maintain...) PROTECTION OF STRATOSPHERIC OZONE Recycling and Emissions Reduction § 82.156 Required practices. (a) All... recycling machine certified pursuant to § 82.158. All persons opening appliances except for MVACs and...

  6. Dicty_cDB: AFA156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available AF (Link to library) AFA156 (Link to dictyBase) - - - Contig-U10843-1 AFA156F (Link... to Original site) AFA156F 604 - - - - - - Show AFA156 Library AF (Link to library) Clone ID AFA156 (Link to dict...yBase) Atlas ID - NBRP ID - dictyBase ID - Link to Contig Contig-U10843-1 Original site URL http://dict...EVAIMSKIFHPNIVLFLGACTSTPGKLMICTELMKGNLESLLLDPMVKLP LITRMRMAKDAALGVLWLHS--- Transl...yhtht**KTMATQQQQQQQQQQQQQIK ARKDIQIQQAQSASDILGPPEISETEITTESILGDGSFGTVYKGRCRLKDVAVKVMLKQV DQKTLTDFRKEVAIMSKIFHPNIVLFLGACTSTPGKLMICT

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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

  14. 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.

  15. 38 CFR 17.156 - Eligibility for automobile adaptive equipment.

    Science.gov (United States)

    2010-07-01

    ... automobile adaptive equipment. 17.156 Section 17.156 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS MEDICAL Automotive Equipment and Driver Training § 17.156 Eligibility for automobile adaptive equipment. Automobile adaptive equipment may be authorized if the Under Secretary for Health...

  16. 33 CFR 156.160 - Supervision by person in charge.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Supervision by person in charge. 156.160 Section 156.160 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Operations § 156.160 Supervision by person in charge. (a) No person may connect or disconnect a hose, top...

  17. 24 CFR 17.156 - Stay of offset.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false Stay of offset. 17.156 Section 17.156 Housing and Urban Development Office of the Secretary, Department of Housing and Urban Development... Payment Offset Provisions and Administrative Wage Garnishment § 17.156 Stay of offset. If the...

  18. 17 CFR 1.56 - Prohibition of guarantees against loss.

    Science.gov (United States)

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Prohibition of guarantees against loss. 1.56 Section 1.56 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION GENERAL REGULATIONS UNDER THE COMMODITY EXCHANGE ACT Miscellaneous § 1.56 Prohibition of guarantees...

  19. 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.

  20. 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.

  1. 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.

  2. Dicty_cDB: SFD156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available producing significant alignments: (bits) Value SFD156 (SFD156Q) /CSM/SF/SFD1-C/SFD156Q.Seq.d/ 42 0.003 own u...pdate 2001. 6.14 Homology vs DNA Score E Sequences producing significant alignments: (bits) Value...', mRNA sequence. 40 12 1 dna update 2002. 5.31 Homology vs Protein Score E Sequences producing significant alignments: (bits) Value

  3. 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.

  4. The Negative Parity Bands in $^{156}$Gd

    CERN Document Server

    Jentschel, Michael; Curien, Dominique; Dudek, Jerzy; Haas, Florent

    2014-01-01

    The high flux reactor of the Institut Laue-Langevin is the world most intense neutron source for research. Using the ultra high-resolution crystal spectrometers GAMS installed at the in-pile target position H6/H7 it is possible to measure nuclear state lifetimes using the Gamma Ray Induced Recoil (GRID) technique. In bent crystal mode, the spectrometers allow to perform spectroscopy with a dynamic range of up to six orders magnitude. At a very well collimated external neutron beam it is possible to install a highly efficient germanium detector array to obtain coincidences and angular correlations. The mentioned techniques were used to study the first two negative parity bands in $^{156}$Gd. These bands have been in the focus of interest since they seem to show signatures of a tetrahedral symmetry. A surprisingly high B(E2) value of about 1000 W.u. for the $4^- \\rightarrow 2^-$ transition was discovered. It indicates that the two first negative parity bands cannot be considered to be signature partners.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 30 CFR 75.156 - AMS operator, qualifications.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false AMS operator, qualifications. 75.156 Section 75... HEALTH MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Qualified and Certified Persons § 75.156 AMS operator, qualifications. (a) To be qualified as an AMS operator, a person shall be provided with...

  11. 9 CFR 156.1 - Meaning of words.

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Meaning of words. 156.1 Section 156.1 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... Meaning of words. Words used in this part in the singular form shall import the plural, and vice versa,...

  12. 40 CFR 156.85 - Non-target organisms.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Non-target organisms. 156.85 Section 156.85 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS... Non-target organisms. (a) Requirement. Where a hazard exists to non-target organisms, EPA may require...

  13. 40 CFR 156.66 - Child hazard warning.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Child hazard warning. 156.66 Section 156.66 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS..., marketing, storage or use is remote (for example, an industrial use product); or (2) The pesticide...

  14. 42 CFR 423.156 - Consumer satisfaction surveys.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Consumer satisfaction surveys. 423.156 Section 423... Improvement Requirements § 423.156 Consumer satisfaction surveys. Part D contracts with 600 or more enrollees... Providers and Systems (CAHPS) survey vendors to conduct the Medicare CAHPS satisfaction survey of Part...

  15. 17 CFR 230.156 - Investment company sales literature.

    Science.gov (United States)

    2010-04-01

    ... literature. 230.156 Section 230.156 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION... literature. (a) Under the federal securities laws, including section 17(a) of the Securities Act of 1933 (15... of any means or instrumentality of interstate commerce or of the mails, to use sales literature...

  16. 40 CFR 156.140 - Identification of container types.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Identification of container types. 156... PROGRAMS LABELING REQUIREMENTS FOR PESTICIDES AND DEVICES Container Labeling § 156.140 Identification of container types. For products other than plant-incorporated protectants, the following statements,...

  17. 19 CFR 122.156 - Release of passengers.

    Science.gov (United States)

    2010-04-01

    ... Service or by a Customs officer acting on behalf of that agency. ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Release of passengers. 122.156 Section 122.156 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF...

  18. 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.

  19. 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.

  20. 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.

  1. 156 Viviendas Industrializadas en Vitoria-Gasteiz

    Directory of Open Access Journals (Sweden)

    López del Corral, J. J.

    2009-03-01

    Full Text Available In 2004, VISESA announced a Grant for Research on Industrialized Housing Structures that was awarded to the Pich-Aguilera team. Their survey identified a series of energy-related, social and economic aspects in modern construction that could be optimized by system industrialization. * System assessed in the survey: – Facade cladding. – Frame (columns and beams. – Three-dimensional aspects (horizontal/vertical surfaces, standard rooms, modules. – Composite construction in frame, cladding and modules.* Analysis of construction contracting, associations and companies. * Comparative analysis of industrialized and traditional construction. Taking the theoretical data and conclusions of the survey funded by the grant as a basis, and in light of the industrialization strategy laid down in the Basque Country Regional Government’s Housing Guidelines and VISESA’s Strategic and Management Plans, concrete manufacturers in the Basque Country and surrounding autonomous communities were contacted to determine the industrial feasibility of a specific construction project. With these findings in hand, the research grant was extended to include a specific architectural design: 156 housing units on lot RC.33 in Sector 6 at Zabalgana, Vitoria-Gasteiz, whose main characteristics are: – G+8+penthouse, doubling the height of isostatic concrete buildings erected in Spain to date. – Industrialized structure and enclosures (3-storey columns, isostatic portal frames stiffened with steel tie rods and slab topping. – Curved steel roof and steel joints between columns (high strength bolts. – Industrialized construction system (process, not only as the sum of elements, but minimizing material and energy consumption, raising the guarantee of final finish quality and improving working conditions and site safety. The construction design (PICH-AGUILERA and structure by BOMA was concluded with construction solutions NOT dependent upon specific patents; the

  2. 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.

  3. 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...

  4. Search for Fingerprints of Tetrahedral Symmetry in $^{156}Gd$

    CERN Document Server

    Doan, Q T; Stezowski, O; Dudek, J; Mazurek, K; Gózdz, A; Piot, J; Duchêne, G; Gall, B; Molique, H; Richet, M; Medina, P; Guinet, D; Redon, N; Schmitt, C; Jones, P; Julin, R; Peura, P; Ketelhut, S; Nyman, M; Jakobsson, U; Maj, A; Zuber, K; Bednarczyk, P; Schunck, N; Dobaczewski, J; Astier, A; Deloncle, I; Verney, D; De Angelis, G; Gerl, J

    2008-01-01

    Theoretical predictions suggest the presence of tetrahedral symmetry as an explanation for the vanishing intra-band E2-transitions at the bottom of the odd-spin negative parity band in $^{156}Gd$. The present study reports on experiment performed to address this phenomenon. It allowed to determine the intra-band E2 transitions and branching ratios B(E2)/B(E1) of two of the negative-parity bands in $^{156}Gd$.

  5. 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.

  6. 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

  7. 胎儿水肿156例临床分析%Clinical study on 156 cases with hydrops fetalis

    Institute of Scientific and Technical Information of China (English)

    林胜谋; 王晨虹; 朱小瑜; 李胜利; 林赛穆; 方群

    2011-01-01

    目的 探讨胎儿水肿的超声特点、病因及临床预后.方法 回顾性分析2002年9月至2010年5月就诊于深圳市妇幼保健院的156例超声筛查提示胎儿水肿孕妇的临床资料,分析胎儿水肿的超声特点、病因及预后三者间的关系.结果 超声检查显示,典型胎儿水肿综合征112例、单纯性腹水20例、单纯性胸腔积液8例、单纯性心包积液7例、单纯性皮肤水肿5例和单纯性胎盘增厚4例.主要病因分析显示,非免疫性疾病中贫血占35.9% (56/156)、心血管系统异常占9.6%( 15/156)、宫内感染占7.1%(11/156)、异常双胎妊娠占6.4% (10/156)、胎粪性腹膜炎占5.8% (9/156)、呼吸系统疾病占5.1% (8/156)、染色体异常占4.5% (7/156)、免疫性贫血占1.9% (3/156).非免疫性贫血中以α地中海贫血(重型)最常见,占96% (54/56);病因或相关畸形的诊断率为81.4%( 127/156).预后追踪结果显示,156例中7例胎死宫内,110例孕妇选择放弃胎儿引产,3例失访;另36例继续妊娠至分娩,其中8例新生儿期死亡,28例存活;双胎输血综合征、胎粪性腹膜炎、先天性乳糜胸、宫内感染及心血管系统异常等病因出现存活胎儿;典型胎儿水肿综合征患儿的存活率为3.6%(4/112).结论 腹水是胎儿水肿常见的超声特点;胎儿水肿病因复杂,临床预后与病因及水肿类别有关.%Objective To investigate the ultrasound characteristics,etiology and prognosis in hydrops fetalis.Methods From September 2002 to May 2010,156 hydrops fetalis presented in Shenzhen Maternity and Child Healthcare Hospital were studied retrospectively,including ultrasound characteristics,etiology,and prognosis.Results All of the 112 typical hydrops fetalis,20 cases with isolated ascites,8 cases with isolated pleural effusion,7 cases with isolated pericardial effusion,5 cases with isolated subcutaneous edema,4 cases with isolated placental thickening were observed by

  8. Structure change of 156Yb at high-spin states

    Institute of Scientific and Technical Information of China (English)

    HUA Hui; LI Zhong-Yu; WANG Shou-Yu; MENG Jie; LI Zhi-Huan; LI Xiang-Qing; XU Fu-Rong; LIU Hong-Liang; ZHANG Shuang-Quan; ZHOU Shan-Gui; YE Yan-Lin; JIANG Dong-Xing; ZHENG Tao; ZHU Li-Hua; WU Xiao-Guang; LI Guang-Sheng; HE Chuang-Ye; MA Li-Ying; LU Fei; FAN Feng-Ying; HAN Li-Ying; WANG He; XIAO Jun; LI Xue-Qin; CHEN Dong; FANG Xiao; LOU Jian-Lin; LIU Ying; HAO Xin; PAN Bo; LI Li-Hua

    2009-01-01

    High-spin states of 156Yb have been studied via the 144Sm(16O,4n)156Yb fusion-evaporation reaction at beam energy 102 MeV. The positive-parity yrast band and negative-parity cascade have been extended up to higher-spin states, respectively. The characteristics of the negative-parity sequence above the 25- state may related to the excitation from the nucleon in the Z = 64, N = 82 core. The E-GOS curve for the positive-parity yrast sequence in 156Yb indicate that this nucleus may undergo an evolution from quasivibrational to quasirotational structure with increasing angular momentum. The Cranked Woods-Saxon-Strutinsky calculations by means of Total-Routhian-Surface (TRS) methods has been made to understand this structure change.

  9. 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.

  10. 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.

  11. 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.)

  12. 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.

  13. 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.

  14. 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%.

  15. ISOMER-SELECTED DECAY OF THE GDR IN DY-156

    NARCIS (Netherlands)

    VANSCHAGEN, JPS; HARAKEH, MN; HESSELINK, WHA; NOORMAN, RF

    1995-01-01

    The strength distribution of high-energy gamma-rays emitted in the statistical decay of the 156Dy compound nucleus, with E* = 92.5 MeV, has been measured inclusively and for selected decay pathways in which isomers in 149Dy, 151Dy and 152Dy were populated. For both spectra a deformation \\beta\\ = 0.3

  16. 40 CFR 156.200 - Scope and applicability.

    Science.gov (United States)

    2010-07-01

    ... Section 156.200 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS... 170 of this chapter. The requirements addressed in these statements are designed to reduce the risk of... used in the production of agricultural plants on agricultural establishments as defined in § 170.3...

  17. 40 CFR 156.70 - Precautionary statements for human hazards.

    Science.gov (United States)

    2010-07-01

    ...) PESTICIDE PROGRAMS LABELING REQUIREMENTS FOR PESTICIDES AND DEVICES Human Hazard and Precautionary Statements § 156.70 Precautionary statements for human hazards. (a) Requirement. Human hazard and... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Precautionary statements for human...

  18. Phenotype abnormality: 156 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 156 http://metadb.riken.jp/db/SciNetS_ria224i/cria224u1ria224u662i decreased efficiency... in organ named root hair cell during process named 5 root hair formation stage ... root hair cell ... decreased efficiency ... 5 root hair formation stage ...

  19. 33 CFR 156.150 - Declaration of inspection.

    Science.gov (United States)

    2010-07-01

    ... (CONTINUED) POLLUTION OIL AND HAZARDOUS MATERIAL TRANSFER OPERATIONS Oil and Hazardous Material Transfer Operations § 156.150 Declaration of inspection. (a) No person may transfer oil or hazardous material to or... facility and the receiving vessel or facility; (2) The address of the facility or location of the...

  20. Viscosity, fission time scale and deformation of Dy-156

    NARCIS (Netherlands)

    van't Hof, G; Bacelar, JCS; Dioszegi, [No Value; Harakeh, MN; Hesselink, WHA; Kalantar-Nayestanaki, N; Kugler, A; van der Ploeg, H; Plompen, AJM; van Schagen, JPS

    1998-01-01

    In the fusion-fission reaction Ar-40 + Cd-116 --> Dy-156*, fission, at E-b = 216 MeV and 238 MeV, gamma-rays were measured in coincidence with fission fragments. The interpretation of the gamma-ray spectra is done with the help of a modified version of the statistical-model code CASCADE. The spectra

  1. 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.

  2. 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.

  3. 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

  4. 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

  5. Search for Fingerprints of Tetrahedral Symmetry in ^{156}Gd

    Energy Technology Data Exchange (ETDEWEB)

    Doan, Q. T. [Universite Lyon 1, Villeurbanne, France; Curien, D. [CNRS, Strasbourg, France; Stezowski, O. [Universite Lyon 1, Villeurbanne, France; Dudek, J. [CNRS, Strasbourg, France; Mazurek, K. [H. Niewodniczanski Institute of Nuclear Physics (INP), Krakow, Poland; Gozdz, A. [Maria Curie-Sklodowskiej, Lublin, Poland; Piot, J. [CNRS, Strasbourg, France; Duchene, G. [CNRS, Strasbourg, France; Gall, B. [CNRS, Strasbourg, France; Molique, H. [CNRS, Strasbourg, France; Richet, M. [CNRS, Strasbourg, France; Guinet, D. [Universite Lyon 1, Villeurbanne, France; Redon, N. [Universite Lyon 1, Villeurbanne, France; Schmitt, Ch. [Universite Lyon 1, Villeurbanne, France; Jones, P. [University of Jyvaskyla; Peura, P. [University of Jyvaskyla; Ketelhut, S. [University of Jyvaskyla; Nyman, M. [University of Jyvaskyla; Jakobsson, U. [University of Jyvaskyla; Greenlees, P. T. [University of Jyvaskyla; Julin, R. [University of Jyvaskyla; Juutinen, S. [University of Jyvaskyla; Rahkila, P. [University of Jyvaskyla; Maj, A. [H. Niewodniczanski Institute of Nuclear Physics (INP), Krakow, Poland; Zuber, K. [H. Niewodniczanski Institute of Nuclear Physics (INP), Krakow, Poland; Bednarczyk, P. [H. Niewodniczanski Institute of Nuclear Physics (INP), Krakow, Poland; Schunck, N. [Oak Ridge National Laboratory (ORNL); Dobaczewski, J. [Warsaw University; Astier, A. [CNRS, Orsay, France; Deloncle, I. [CNRS, Orsay, France; Verney, D. [CNRS/IN2P3, Orsay, France; De Angelis, G. [INFN, Laboratori Nazionali di Legnaro, Italy; Gerl, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany

    2009-01-01

    Theoretical predictions suggest the presence of tetrahedral symmetry as an explanation for the vanishing intra-band E2 transitions at the bottom of the odd-spin negative-parity band in ^{156}Gd. The present study reports on experiment performed to address this phenomenon. It allowed to remove certain ambiguities related to the intra-band E2 transitions in the negative-parity bands to determine the new inter-band transitions and reduced probability ratios B(E2)/B(E1) and, for the first time, to determine the experimental uncertainties related to the latter observable.

  6. 10 CFR 431.156 - Energy and water conservation standards and effective dates.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Energy and water conservation standards and effective dates. 431.156 Section 431.156 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM... Standards § 431.156 Energy and water conservation standards and effective dates. Each commercial...

  7. 27 CFR 25.156 - Determination of tax on keg beer.

    Science.gov (United States)

    2010-04-01

    ... keg beer. 25.156 Section 25.156 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS BEER Tax on Beer Determination of Tax § 25.156 Determination of tax on keg beer. (a) In determining the tax on beer removed in kegs, a barrel is regarded as...

  8. 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).

  9. 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.

  10. 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.

  11. 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.

  12. 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.)

  13. MicroRNA156 improves drought stress tolerance in alfalfa (Medicago sativa) by silencing SPL13.

    Science.gov (United States)

    Arshad, Muhammad; Feyissa, Biruk A; Amyot, Lisa; Aung, Banyar; Hannoufa, Abdelali

    2017-05-01

    Alfalfa (Medicago sativa) is an important forage crop that is often grown in areas that frequently experience drought and water shortage. MicroRNA156 (miR156) is an emerging tool for improving various traits in plants. We tested the role of miR156d in drought response of alfalfa, and observed a significant improvement in drought tolerance of miR156 overexpression (miR156OE) alfalfa genotypes compared to the wild type control (WT). In addition to higher survival and reduced water loss, miR156OE genotypes also maintained higher stomatal conductance compared to WT during drought stress. Furthermore, we observed an enhanced accumulation of compatible solute (proline) and increased levels of abscisic acid (ABA) and antioxidants in miR156OE genotypes. Similarly, alfalfa plants with reduced expression of miR156-targeted SPL13 showed reduced water loss and enhanced stomatal conductance, chlorophyll content and photosynthetic assimilation. Several genes known to be involved in drought tolerance were differentially expressed in leaf and root of miR156 overexpression plants. Taken together, our findings reveal that miR156 improves drought tolerance in alfalfa at least partially by silencing SPL13. Crown Copyright © 2017. Published by Elsevier B.V. All rights reserved.

  14. 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.

  15. 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.

  16. 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).

  17. 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.

  18. 25 CFR 900.156 - What happens after the informal conference?

    Science.gov (United States)

    2010-04-01

    ... tribal organization a written report which summarizes what happened at the informal conference and a... 25 Indians 2 2010-04-01 2010-04-01 false What happens after the informal conference? 900.156... Payment § 900.156 What happens after the informal conference? (a) Within 10 days of the...

  19. 33 CFR 110.156 - Randall Bay, Freeport, Long Island, N.Y.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Randall Bay, Freeport, Long Island, N.Y. 110.156 Section 110.156 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND....Y. (a) The anchorage grounds. Southward of a line 312 feet south of and parallel to the south...

  20. 10 CFR 72.156 - Identification and control of materials, parts, and components.

    Science.gov (United States)

    2010-01-01

    ... components. 72.156 Section 72.156 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR THE INDEPENDENT STORAGE OF SPENT NUCLEAR FUEL, HIGH-LEVEL RADIOACTIVE WASTE, AND REACTOR-RELATED... components. The licensee, applicant for a license, certificate holder, and applicant for a CoC...

  1. 9 CFR 381.156 - Poultry meat content standards for certain poultry products.

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Poultry meat content standards for certain poultry products. 381.156 Section 381.156 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY ORGANIZATION AND TERMINOLOGY; MANDATORY MEAT AND POULTRY...

  2. 40 CFR 80.156 - Liability for violations of the interim detergent program controls and prohibitions.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 16 2010-07-01 2010-07-01 false Liability for violations of the interim detergent program controls and prohibitions. 80.156 Section 80.156 Protection of Environment... operating under such refiner's corporate, trade, or brand name or that of any of its marketing...

  3. 34 CFR 222.156 - How is an administrative hearing conducted?

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false How is an administrative hearing conducted? 222.156 Section 222.156 Education Regulations of the Offices of the Department of Education OFFICE OF ELEMENTARY AND SECONDARY EDUCATION, DEPARTMENT OF EDUCATION IMPACT AID PROGRAMS Impact Aid...

  4. 78 FR 44806 - Amendments to Regulation D, Form D and Rule 156

    Science.gov (United States)

    2013-07-24

    ...-13] RIN 3235-AL46 Amendments to Regulation D, Form D and Rule 156 AGENCY: Securities and Exchange... releases amended Rule 506 of Regulation D, Form D and Rule 144A under the Securities Act of 1933 to... Regulation D, Form D and Rule 156 under the Securities Act. These proposed amendments are intended to...

  5. 26 CFR 156.6071-1 - Time for filing returns relating to greenmail.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 17 2010-04-01 2010-04-01 false Time for filing returns relating to greenmail. 156.6071-1 Section 156.6071-1 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY..., without regard to any provision of the Code providing for deferral of recognition. (b) Returns relating...

  6. 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.

  7. 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.

  8. GmmiR156b overexpression delays flowering time in soybean.

    Science.gov (United States)

    Cao, Dong; Li, Ying; Wang, Jialin; Nan, Haiyang; Wang, Youning; Lu, Sijia; Jiang, Qiong; Li, Xiaoming; Shi, Danning; Fang, Chao; Yuan, Xiaohui; Zhao, Xiaohui; Li, Xia; Liu, Baohui; Kong, Fanjiang

    2015-11-01

    Soybean [Glycine max (L.) Merr.] is an important crop used for human consumption, animal feed and biodiesel fuel. Wering time and maturity significantly affect soybean grain yield. In Arabidopsis thaliana, miR156 has been proposed to regulate the transition from the juvenile to the adult phase of shoot development, which is accompanied by changes in vegetative morphology and an increase in reproductive potential. However, the molecular mechanisms underlying miR156 function in soybean flowering remain unknown. Here, we report that the overexpression of GmmiR156b delays flowering time in soybean. GmmiR156b may target SPL orthologs and negatively regulate GmSPLs, thereby delaying flowering in soybean under LD and natural conditions. GmmiR156b down-regulates several known flowering time regulators in soybean, such as GmAP1 (a, b, c), GmLFY2, GmLFY2, GmFULs, GmSOC1s, GmFT5a, and GmmiR172. These data show that a similar miR156-SPL regulatory module was conserved in the soybean flowering pathway. However, GmFULs, GmSOC1a and GmSOC1b were significantly suppressed under LD conditions but not under SD conditions, which is different in Arabidopsis that these genes were down-regulated irrespective of photoperiod. In addition, GmmiR156b was up-regulated by E1, E2 (GmGI), E3 and E4, which control flowering time and maturity in soybean, and suppressed E1 (E1-Like) and E2 (E2-Like) genes under LD conditions. These data indicated that the miR156-SPL regulatory module was also with some degree of divergent in soybean flowering pathway.

  9. MicroRNA156 as a promising tool for alfalfa improvement.

    Science.gov (United States)

    Aung, Banyar; Gruber, Margaret Y; Amyot, Lisa; Omari, Khaled; Bertrand, Annick; Hannoufa, Abdelali

    2015-08-01

    A precursor of miR156 (MsmiR156d) was cloned and overexpressed in alfalfa (Medicago sativa L.) as a means to enhance alfalfa biomass yield. Of the five predicted SPL genes encoded by the alfalfa genome, three (SPL6, SPL12 and SPL13) contain miR156 cleavage sites and their expression was down-regulated in transgenic alfalfa plants overexpressing miR156. These transgenic plants had reduced internode length and stem thickness, enhanced shoot branching, increased trichome density, a delay in flowering time and elevated biomass production. Minor effects on sugar, starch, lignin and cellulose contents were also observed. Moreover, transgenic alfalfa plants had increased root length, while nodulation was maintained. The multitude of traits affected by miR156 may be due to the network of genes regulated by the three target SPLs. Our results show that the miR156/SPL system has strong potential as a tool to substantially improve quality and yield traits in alfalfa. © 2014 Society for Experimental Biology, Association of Applied Biologists and John Wiley & Sons Ltd.

  10. 甲状腺功能亢进156例围手术期处理%Perioperative management of 156 cases of hyperthyroidism

    Institute of Scientific and Technical Information of China (English)

    赵晓峰; 赵东晓; 刘全胜

    2001-01-01

    目的总结甲状腺功能亢进(甲亢)的围手术期处理经验.方法对1990年1月~1999年10月收治的甲亢156例进行回顾性分析.对术前Lugol液变应差者应用小剂量地巴唑.术中采用冬眠疗法.结果全部患者均无围手术期死亡,95%(148/156)患者围手术期内治愈.结论处理好围手术期是提高疗效的关键.

  11. 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.

  12. 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.

  13. P156

    Directory of Open Access Journals (Sweden)

    D. Kokova

    2015-11-01

    This research was supported by Federal Targeted Programme for Research and Development in Priority Areas of Development of the Russian Scientific and Technological Complex for 2014–2020, “Development of molecular signatures for early detection of lung cancer” (No. 14.575.21.0064 from 05.08.2014, RFMEFI57514X0064 and supported by Tomsk State University, Competitiveness Improvement Program”. Work was conducted with the application of the Tomsk regional common use center technical equipment acquired thanks to a grant of the Russian Ministry of the Agreement No.14.594.21.0001 (RFMEFI59414X0001.

  14. 40 CFR 81.156 - Southern Maryland Intrastate Air Quality Control Region.

    Science.gov (United States)

    2010-07-01

    ... Air Quality Control Regions § 81.156 Southern Maryland Intrastate Air Quality Control Region. The Southern Maryland Intrastate Air Quality Control Region consists of the territorial area encompassed by the... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Southern Maryland Intrastate...

  15. 40 CFR 156.78 - Precautionary statements for physical or chemical hazards.

    Science.gov (United States)

    2010-07-01

    ... Precautionary Statements § 156.78 Precautionary statements for physical or chemical hazards. (a) Requirement... instructions must be added to the “Physical and Chemical Hazards” warning statement, in addition to any... equivalent symbol, must be displayed along with the required language adjoining the “Physical and...

  16. 40 CFR 61.156 - Cross-reference to other asbestos regulations.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 8 2010-07-01 2010-07-01 false Cross-reference to other asbestos... for Asbestos § 61.156 Cross-reference to other asbestos regulations. In addition to this subpart, the regulations referenced in Table 1 also apply to asbestos and may be applicable to those sources specified...

  17. Electric moments and charge deformation parameters in 152,154Sm, 156Gd, and 166Er

    NARCIS (Netherlands)

    Fischer, H.; Kamke, D.; Kittling, H.J.; Kuhlmann, E.; Plicht, H.; Schormann, R.

    1977-01-01

    Coulomb excitation experiments with α particles were performed on the four rare-earth nuclei 152,154Sm, 156Gd, and 166Er. E2 and E4 transition matrix elements of low-lying levels in the rotational ground-state bands were obtained. Model dependent charge deformation parameters βc2 and βc4 were extrac

  18. Nannoplankton from RC9-156 in the southeastern Arabian Sea

    Digital Repository Service at National Institute of Oceanography (India)

    Guptha, M.V.S.

    A deep sea core RC9-156 collected in the Arabian Sea at a water depth of 4583 m was analysed for calcareous nannoplankton and dissolution studies. Twelve species of nannoplankton were identified and based on the assemblage, it is suggested...

  19. Viscosity and fission time scale of Dy-156 at high excitation energies and large angular momenta

    NARCIS (Netherlands)

    vantHof, G; Bacelar, JCS; Dioszegi, [No Value; Harakeh, MN; Hesselink, WHA; KalantarNayestanaki, N; Kugler, A; vanderPloeg, H; Plompen, AJM; vanSchagen, JPS

    1996-01-01

    The reaction Ar-40 + Cd-116 --> Dy-156* --> fission as Studied at beam energies E(b) = 216 MeV and E(b) = 238 MeV, wherein gamma-rays were measured in coincidence with fission fragments. From these spectra the nuclear viscosity gamma and fission time scale were deduced by comparing to statistical

  20. Convergent repression of miR156 by sugar and the CDK8 module of Arabidopsis Mediator.

    Science.gov (United States)

    Buendía-Monreal, Manuel; Gillmor, C Stewart

    2017-03-01

    In Arabidopsis, leaves produced during the juvenile vegetative phase are simple, while adult leaves are morphologically complex. The juvenile to adult transition is regulated by miR156, a microRNA that promotes juvenility by impeding the function of SPL transcription factors, which specify adult leaf traits. Both leaf derived sugars, as well as the Mediator Cyclin Dependent Kinase 8 (CDK8) module genes CENTER CITY (CCT)/MED12 and GRAND CENTRAL (GCT)/MED13, act upstream of miR156 to promote the juvenile to adult transition. However, it is not known whether sugar, CCT and GCT repress miR156 independently, as part of the same pathway, or in a cooperative manner. Here we show that sugar treatment can repress MIR156 expression in the absence of CCT or GCT. Both cct and the photosynthetic mutant chlorina1 (ch1) (which decreases sugar synthesis) exhibit extended juvenile development and increased MIR156A and MIR156C expression. Compared to ch1 and cct single mutants, the ch1 cct double mutant has a stronger effect on juvenile leaf traits, higher MIR156C levels, and a dramatic increase in MIR156A. Our results show that sugar and the CDK8 module are capable of regulating MIR156 independently, but suggest they normally act together in a synergistic manner. Copyright © 2017 Elsevier Inc. All rights reserved.

  1. 156例DR全脊柱拼接摄影照片质量分析%Quality analysis of whole spinal splicing photographs in 156 cases

    Institute of Scientific and Technical Information of China (English)

    王振毅

    2012-01-01

    Objective To discuss the factors affecting the picture quality by analyzing of 156 digital radiography(DR) of whole spine photos. Methods A total of 156 DR whole spine photos were randomly selected, male 45, female 111, aged 9-75 years old, mean age 42 years old. The photo quality was evaluated by the location, image clarity, density difference, stitching line and distortion in all parts of the photo. Results Among all of the photos, 1 case occurred imbalance between head-neck and other parts, 3 cases appeared big differences in the density of the entire film, 2 cases had obvious stitching lines because of image distortion in splicing point, but which were not affected the diagnosis, 4 cases were dislocated due to respiratory motion. Conclusion It is demonstrated that there are many reasons affecting the whole spine stitching DR imaging, but the quality of qualified photo is better than that of the computed radiography, which could completely meet the diagnostic requirements.%目的 通过对近期156份数字化射线摄影(DR)所做全脊柱照片质量分析,讨论影响照片质量的因素.方法 随机选取开展DR全脊柱摄影以来的156例患者照片,其中男性45例,女性111例;年龄9~75岁,平均年龄42岁.按照包括的部位、图像清晰度、全片密度有无差异、拼接线是否明显、全片各部位是否失真来评价照片质量.结果 全部照片中,有1例头颈部与其他部位比例失调,3例全片密度差别太大,2例因拼接点上下影像变形失真而使拼接线明显,不影响诊断,4例拼接点选择错误影像失真,4例因呼吸运动导致拼接错位.结论 影响DR全脊柱拼接成像片的原因很多,但合格的照片质量要优于计算机X射线摄影片,完全能满足诊断要求.

  2. Nosocomial infection in 156 patients with malignant blood diseases%恶性血液病医院感染156

    Institute of Scientific and Technical Information of China (English)

    权柄涛; 刘珂

    2002-01-01

    @@ 1 临床资料 1996/1999年我院住院恶性血液病患者233例,其中医院感染156例. 急性淋巴细胞白血病51例,急性非淋巴细胞白血病64例,慢性白血病22例,再生障碍性贫血41例,恶性淋巴瘤24例,多发性骨髓瘤12例,骨髓增生异常综合征19例.

  3. Application analysis of caspofungin used in 156 patients in our hospital%卡泊芬净在156例患者中的应用分析

    Institute of Scientific and Technical Information of China (English)

    杨亚青; 张小雪

    2014-01-01

    Objective: To survey the application of caspofungin in our hospital and provide reference for rational use in clinic. Methods: A total of 156 cases using caspofungin were extracted from January 2011 to March 2012 and retrospectively analyzed in respect of the number of use of caspofungin in different wards, situation of medication, clinical efifcacy and adverse reactions. Results:Among 156 cases of application of caspofungin, the usage and administration in 141 cases complied with the speciifcation of caspofungin, the loading doses and maintenance doses in 3 children patients were reduced, both of the maintenance doses and loading doses in other 12 cases were 70 mg. The highest frequent use of caspofungin was respiratory department (38 cases, accounting for 24.36%), followed by hematology department (31 cases,accounting for 19.87%) and cardiovascular department (17 cases, accounting for 10.90%). After application of caspofungin treatment, the total effective rate was 51.93%, and in the course of treatment no serious adverse reaction was found. Conclusion:Caspofungin was relatively safe and effective for the treatment of invasive aspergillosis, invasive candidiasis as well as candidemia.%目的:了解卡泊芬净在我院的应用情况,为规范其使用提供参考。方法:采用回顾性方法,抽取我院2011年1月-2012年3月应用卡泊芬净的患者156例,统计卡泊芬净在各个科室的使用例数、用药情况等,对不同患者使用该药物的临床疗效以及不良反应进行分析。结果:156例患者中,141例患者的卡泊芬净用法用量符合说明书规定,3例儿童患者负荷剂量及维持剂量减半或减少,12例患者负荷剂量及维持剂量均为70 mg;用药频次最高的临床科室为呼吸科38例(占24.36%),其次为血液科31例(占19.87%),心血管科17例(占10.90%)。156例患者经卡泊芬净治疗后,总有效率为51.93%,在治疗过程

  4. 42 CFR 84.156 - Airflow resistance test; Type C supplied-air respirator, demand class; minimum requirements.

    Science.gov (United States)

    2010-10-01

    ... C supplied-air respirator, demand class; minimum requirements. (a) Inhalation resistance shall not... 42 Public Health 1 2010-10-01 2010-10-01 false Airflow resistance test; Type C supplied-air respirator, demand class; minimum requirements. 84.156 Section 84.156 Public Health PUBLIC HEALTH SERVICE...

  5. 33 CFR 165.156 - Regulated Navigation Area: East Rockaway Inlet to Atlantic Beach Bridge, Nassau County, Long...

    Science.gov (United States)

    2010-07-01

    ..., thence easterly along the shore to the east side of the Atlantic Beach Bridge, State Route 878, over East... Rockaway Inlet to Atlantic Beach Bridge, Nassau County, Long Island, New York. 165.156 Section 165.156... to Atlantic Beach Bridge, Nassau County, Long Island, New York. (a) Location. The following area is...

  6. 78 FR 61222 - Amendments to Regulation D, Form D and Rule 156; Re-Opening of Comment Period

    Science.gov (United States)

    2013-10-03

    .... S7-06-13] RIN 3235-AL46 Amendments to Regulation D, Form D and Rule 156; Re-Opening of Comment Period... amendments to Regulation D, Form D and Rule 156 under the Securities Act in Release No. 33-9416 (July 10... amendments. DATES: The comment period for the proposed rule published at 78 FR 44806 on July 24, 2013,...

  7. Internetwork magnetic field distribution from simultaneous 1.56 micron and 630 nm observations

    CERN Document Server

    Gonzalez, M J Martinez; Cobo, B Ruiz; Beck, C

    2007-01-01

    We study the contradictory magnetic field strength distributions retrieved from independent analyses of spectropolarimetric observations in the near-infrared (1.56 micron) and in the visible (630 nm) at internetwork regions. In order to solve this apparent controversy, we present simultaneous and co-spatial 1.56 micron and 630 nm observations of an internetwork area. The properties of the circular and linear polarization signals, as well as the Stokes V area and amplitude asymmetries, are discussed. As a complement, inversion techniques are also used to infer the physical parameters of the solar atmosphere. As a first step, the infrared and visible observations are analysed separately to check their compatibility. Finally, the simultaneous inversion of the two data sets is performed. The magnetic flux densities retrieved from the individual analysis of the infrared and visible data sets are strongly correlated. The polarity of the Stokes V profiles is the same at co-spatial pixels in both wavelength ranges. T...

  8. Ectopic expression of miR156 represses nodulation and causes morphological and developmental changes in Lotus japonicus.

    Science.gov (United States)

    Wang, Ying; Wang, Zhishuo; Amyot, Lisa; Tian, Lining; Xu, Ziqin; Gruber, Margaret Y; Hannoufa, Abdelali

    2015-04-01

    The effects of microRNA156 overexpression on general plant architecture, branching, flowering time and nodulation were investigated in the model legume, Lotus japonicus. We cloned an miR156 homolog, LjmiR156a, from L. japonicus, and investigated its SQUAMOSA PROMOTER BINDING PROTEIN LIKE (SPL) genes and its biological function at enhancing vegetative biomass yield, extending flowering time, and its impact on nodulation. Thirteen potential targets for LjmiR156 were identified in vitro and their expression profiles were determined in aerial and underground parts of mature plants, including genes coding for eight SPLs, one WD-40, one RNA-directed DNA polymerase, two transport proteins, and one histidine-phosphotransfer protein. Two SPL and one WD-40 cleavage targets for LjmiR156-TC70253, AU089191, and TC57859-were identified. Transgenic plants with ectopic expression of LjmiR156a showed enhanced branching, dramatically delayed flowering, underdeveloped roots, and reduced nodulation. We also examined the transcript levels of key genes involved in nodule organogenesis and infection thread formation to determine the role of miR156 in regulating symbiosis. Overexpression of LjmiR156a led to repression of several nodulation genes during the early stages of root development such as three ENOD genes, SymPK, POLLUX, CYCLOPS, Cerberus, and Nsp1, and the stimulation of NFR1. Our results show that miR156 regulates vegetative biomass yield, flowering time and nodulation by silencing downstream target SPLs and other genes, suggesting that the miR156 regulatory network could be modified in forage legumes (such as alfalfa and trefoils) and in leafy vegetables (like lettuce and spinach) to positively impact economically valuable crop species.

  9. Therapeutic clues in spinal dural arteriovenous fistulas - a 30 year experience of 156 cases.

    Science.gov (United States)

    Hessler, C; Regelsberger, J; Grzyska, U; Illies, T; Zeumer, H; Westphal, M

    2010-02-01

    Spinal dural arteriovenous fistulae (SDAVF) are rare but remain the most common type of spinal vascular malformations. Treatment options for SDAVF include endovascular embolization, microsurgical dissection or a combination of both. But the optimal treatment paradigm has yet to be defined and may well be an individualized interdisciplinary combinatorial approach. From 1980 to 2008, 156 patients with the diagnosis of SDAVF were treated by neuroradiological and neurosurgical means. Based on the procedure-related complications we retrospectively analyzed our data to elucidate the reasons for endovascular failure and the evolution of the surgical technique. 156 patients were included in this study. There were 31 (19.9%) female and 125 (80.1%) male patients. Average age at the time of diagnosis was 60.8 years. 102 out of 156 (65.4%) underwent endovascular obliteration, 54 (34.6%) patients were treated primarily by surgery. 134 (85.9%) underwent follow-up examination. A total of 29 (18.6%) out of 156 patients could not be treated successfully by endovascular (9.4%) or surgical (4.1%) means. Microsurgery can be recommended as the first choice treatment when the fistula's point is unmistakably identified intradurally. Endovascular obliteration may be justifiable in cases with an easy access to a monoradicular feeding artery during diagnostic angiography. Surgery is a definitive treatment with stable long-term results in which procedure-related morbidity is low. During evolution of the combined approach, endovascular coil placement for correct localization of the fistula and the use of intraoperative micro-Doppler was found to be very helpful in increasing the safety of the surgical procedure and minimizing surgical exposure. Georg Thieme Verlag KG Stuttgart * New York.

  10. 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

  11. 重症手足口病156例临床分析%The clinical analysis of 156 cases of HFMD in Shaanxi area in 2010

    Institute of Scientific and Technical Information of China (English)

    史艳平; 李小青; 韩静枫; 李丹; 豆玉凤

    2011-01-01

    Objective : To analyze the clinical features of HFMD in 2010 in Shaanxi area and study the causes of the disease and the facts to get affected and seek out the effective treatments.Methods:Are reviewing the records of 156 children patients with serious conditioris hospitalized by our hospital from Shaanxi area during 2010.4-2010were analysed.10.Results : We used rRT-PCR to examine the 156 cases of severely sick children finding 75.2% of them got affected by EV71; Including skin rash the typical clinical features mostly happened to patients bellow 3 years old, who often suffered from continuous fever, fatigue, easy to be frightened,uncontrolled shaking.Part of them also appeared increasing breathing rate and peripheraL circulation disturbance, white cell and CRP increasing in peripheral blood and high level of blood sugar.After treatment of releasing intracranial pressure and large amount of IVIG injection and hormonal drugs, 119 patients cured from hospital with 29 cases suffered from aftereffects of disorder of body motions and 8 cases of death.Conclusion : the severe cases of HFMD in Shaanxi area are mostly caused by EV71 affection and all have the damage of nerve system.An early use of IVIG and glucocorticoid can effectively prevent the disease from developing.When damage appears on nerve system, we need pay attention to pulmonary edcma and damage to heart.An early stage of treatment such as mechanical ventilation and active improvement of circuLation can help thereafter.%目的:分析2010年陕西地区重症手足口病(HFMD)的临床特点,探讨其病原、高危因素及有效治疗方法.方法:对156例重症HFMD患儿的临床资料进行回顾性分析.结果:156例重症HFMD,EV71感染占75.2%.临床特点:皮疹,持续发热,精神差、易惊,嗜睡,肢体抖动,部分伴呼吸心率增快,末梢循环不良;外周血中白细胞及CRP升高,高血糖.积极给予降颅压、静脉用丙种球蛋白冲击,激素等对症治疗,临床痊愈出院119

  12. A clinical study of 156 elderly patients with hypertension receiving tooth extraction%156例老年高血压患者拔牙临床研究

    Institute of Scientific and Technical Information of China (English)

    卢丽虹; 胡顺广; 魏远坚

    2014-01-01

    Objective To explore and summarize a safe and effective strategy of decreasing blood pressure for elderly patients with hypertension receiving tooth extraction. Methods Clinical data of 156 elderly patients with hypertension receiving tooth extraction were analyzed retrospectively. Patients all received medicine to control their blood pressure before tooth extraction. 76 Patients receiving nifedipine plus diazepam were allocated to an observation group, and 80 patients receiving nifedipine alone were allocated to a control group. Changes of SBP, DBP and HR before and after the treatment were compared between the two groups. Results The 156 elderly patients with hypertension successfully received tooth extraction without severe complications occurred. Decrease of SBP and DBP in the observation group was significantly greater than that in the control group, and the change of HR was smaller than that in the control group. The differences were statistically significant(P < 0.05). Conclusion Application of nifedipine combined with diazepam for elderly patients with hypertension before tooth extraction is beneficial to control peri-operative blood pressure and keep a stable heart rate, and to reduce emergencies such as severe elevation of blood pressure during peri-operative period of tooth extraction.%目的:探讨老年高血压患者拔牙安全有效的降压策略。方法回顾性分析156例拔牙治疗的老年高血压患者的临床资料,患者均在拔牙前采用药物控制性降压,将采用硝苯地平+安定者76例纳入观察组,单独应用硝苯地平者80例纳入对照组,比较两组患者治疗前后收缩压(SBP)、舒张压(DBP)及心率(HR)的变化。结果本研究156例老年高血压患者均顺利地完成了拔牙,无严重并发症发生。其中观察组SBP、DBP下降效果明显优于对照组,而心率变化小于对照组,差异均有统计学意义(P<0.05)。结论老年高血压患者拔牙前

  13. Full genome analysis of a novel type II feline coronavirus NTU156.

    Science.gov (United States)

    Lin, Chao-Nan; Chang, Ruey-Yi; Su, Bi-Ling; Chueh, Ling-Ling

    2013-04-01

    Infections by type II feline coronaviruses (FCoVs) have been shown to be significantly correlated with fatal feline infectious peritonitis (FIP). Despite nearly six decades having passed since its first emergence, different studies have shown that type II FCoV represents only a small portion of the total FCoV seropositivity in cats; hence, there is very limited knowledge of the evolution of type II FCoV. To elucidate the correlation between viral emergence and FIP, a local isolate (NTU156) that was derived from a FIP cat was analyzed along with other worldwide strains. Containing an in-frame deletion of 442 nucleotides in open reading frame 3c, the complete genome size of NTU156 (28,897 nucleotides) appears to be the smallest among the known type II feline coronaviruses. Bootscan analysis revealed that NTU156 evolved from two crossover events between type I FCoV and canine coronavirus, with recombination sites located in the RNA-dependent RNA polymerase and M genes. With an exchange of nearly one-third of the genome with other members of alphacoronaviruses, the new emerging virus could gain new antigenicity, posing a threat to cats that either have been infected with a type I virus before or never have been infected with FCoV.

  14. 客货共线1-156m简支钢桁结构分析%Structural analysis of 156 m simply supported steel truss girder

    Institute of Scientific and Technical Information of China (English)

    郝云杉

    2012-01-01

    The simply supported steel truss girder is widely used in railway bridge, because of definite stress, lower structural height, light weight and short construction period. Huanglin Hancheng Houma railway 156 m simply supported steel truss girder is the most span length in China. The bridge uses the triangle web member system without vertical members, which main truss members are box sections, the web members are box sections and H-shape sections. In the plane of the upper chords, the crisscross top lateral bracings are arranged which use I-shape sections. MIDAS Civil 2010 is use to establish the three-dimensional finite element model, calculate internal forces of main truss elements, stress, fatigue stress range and natural vibration period.%简支钢桁梁桥因其受力明确、结构高度低、自重轻以及施工周期短等优点,在铁路桥梁中得到了越来越广泛的采用.黄韩侯铁路单线l-156m栓焊下承式简支钢桁梁是目前国内最大跨度的简支钢桁梁结构.该桥主桁采用无竖杆的三角形腹杆体系,主桁弦杆均采用箱形截面;腹杆采用箱形截面和H形截面;上、下均采用交叉式平纵联,采用工字型截面.采用MIDAS Civil 2010建立该桥三维有限元模型,计算其主桁杆件内力、应力、疲劳应力幅,及全桥自振周期.

  15. Y-152和K-156在果蝇ADH催化中的作用%Evidence for Involvement of Tyrosine-152 and Lysine-156 in Catalysis of Drosophila Alcohol Dehydrogenase

    Institute of Scientific and Technical Information of China (English)

    童耕雷; 林志新; 许煜泉

    1999-01-01

    果蝇醇脱氢酶酪氨酸-152(Y-152)和赖氨酸-156(K-156)处于同类脱氢酶的保守位点.经人工定点突变和酶动力学分析,前者的苯丙氨酸(Y152F)、组氨酸(Y152H)和谷氨酸突变体(Y152E)及后者的异亮氨酸突变体(K156I)均丧失催化活性.而半胱氨酸-152(Y152C)及精氨酸-156(K156R)突变体活性分别是对应野生型的0.25%和2.2%.此外,Y152C和K156R的Km(乙醇)值显著增大,而两者的Km(NAD)值均无显著改变.它们还具不同的底物特异性以及对竞争性抑制剂的不同反应.Y-152和K-156在果蝇醇脱氢酶的催化作用中都起重要作用.

  16. 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.

  17. 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.

  18. 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.

  19. 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)

  20. 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.

  1. 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.

  2. Analysis of 156 primary scholar's caries during mixed dentition%156例替牙期小学生龋病相关因素分析

    Institute of Scientific and Technical Information of China (English)

    李奉华; 刘虹; 阙国鹰; 翦新春; 彭解英; 米大丽

    2006-01-01

    目的了解替牙期小学生龋坏的影响因素,为制定预防措施提供依据.方法随机抽取以8~10岁为主的小学生156名,分析恒、乳牙龋坏与年龄、性别、软垢等因素的相关性.结果患龋率以9岁组最高,但年龄和性别差异无统计学意义.软垢指数年龄和性别差异无统计学意义.有乳牙龋坏的软垢指数明显高于无乳牙龋坏者,差异有统计学意义.多因素分析表明:在乳牙龋坏过程中,年龄、软垢对其影响较大.结论为有效防止8~10岁小学生乳牙龋坏,加强口腔卫生知识宣教、控制软垢、定期检查和预防治疗是关键.%[Objective] To assess the effect of factors in primary scholar's caries during mixed dentition, so as to take pertinent measures to prevent caries. [Mothods] 156 primary scholars, who were mainly aged 8~10, were selected randomly, then the correlation between caries of deciduous and permanent teeth and age, sex, food debris was analyzed by single and multiple factor statistical analysis. [Results] The prevalence rate of caries in group of age 9was the highest than that in other age groups. There was no statistical significance among age (8,9,10) groups and between sex (male, female) groups in prevalence rate. There was no statistical significance among age (8,9,10) groups and between sex (male, female)groups in debris index(DI). There was statistical significance in debris index (DI) between primary scholars with caries of deciduous teeth and those without it. Multiple factor statistical analysis showed:age and debris were the main factors inducing caries of deciduous teeth. [Conclusion] In order to prevent primary scholar's caries during mixed dentition effectively, oral healthcare education, eliminating food debris, regular check and prophylactic treatment are crucial.

  3. 156 cases of pregnancy outcomes of women infected with syphilis%156例早孕梅毒驱梅治疗的疗效观察

    Institute of Scientific and Technical Information of China (English)

    张凡

    2011-01-01

    Aim To survey the incidence of syphilis of pregnant women who underwent standard treatment twice and incidence of neonateg syphilis.Methods 156 cases of the syphilis of pregnant women were collected from Aug 2007 to Aug 2010.All of which were treated with benzathine penicilin 2.4 Mu,IM,once a week for 3 weeks,before 28 gestation weeks and 36 gestation weeks.Results In 92 cases pregnant womeng Trust titre was lower than 1:4,89 eases had normal delivery,3 eases premature babies,no nature abortion,no intrauterine death,no stillbirth.4 eases of Trust were positive,without congenital syphilis.64 eases pregnant womeng Trust titre was high-er than 1:8.50 eases had normal delivery,13 eases premature babies,1 ease intrauterine death.12 eases of Trust were positive,2 eases suspected congenital syphilis.Conclusion After standard treatment.Trust titre of pregnant women is lower than 1:4.Their neonates were better than those Trust titre higher than 1:8.%目的 妊娠梅毒经驱梅治疗后的妊娠结局及新生儿梅毒的发病率.方法 收集156例妊娠梅毒,分为TRUST滴度≤1:4组及TRUST滴度≥1:8组,在经过早期(16周前)及晚期(36周前)进行两次规范治疗后,观察两组孕妇的妊娠结局和新生儿的梅毒发病率.结果TRUST滴度≤1:4孕妇足月产89例,早产3例,无流产、死胎或死产,4例TRUST阳性,无先天性梅毒;TRUST滴度≥1:8孕妇足月产50例,早产13例,12例TRUST阳性,疑似先天性梅毒2例.结论 经过正规驱梅治疗,孕妇血清TRUST滴度≤1:4者,其围产儿预后明显好于TRUST滴度≥1:8者,孕妇血清TRUST滴度越高,其围产儿预后越差.

  4. Operation REDWING Commander Task Group 7.3, Operation Plan Number 1-56.

    Science.gov (United States)

    1956-01-24

    9 Decoder 1955 indicates for each unit a two digit numbal which is to be appended to the designation SNF in order to identify the ship _ or unit for...Center) XWAJALEIN D-3_ Annex D to OTG 7.3 No -1-56 SEARCH AND RESCUE PLAN b. Comunications . An specified in reference (b) and Annex E of this-Operation...satisfactory comunications should be employed to transmit CONFIDENTIAL traffic when necessary to transmit visually in the clear. a, Vessels having three or

  5. Procedimientos quirúrgicos en 156 casos de derrame pleural. Resultados inmediatos

    OpenAIRE

    Raúl Cicero-Sabido; Rafael F. Páramo-Arroyo; Francisco Pascual Navarro-Reynoso; Lorenzo Pimentel-Ugarte

    2006-01-01

    Introducción: el derrame pleural es una entidad clínica frecuente, su estudio y manejo son importantes para resolverlo. El objetivo fue evaluar los resultados inmediatos de los procedimientos diagnósticos y terapéuticos en casos consecutivos de derrame pleural. Material y métodos: durante un periodo de 12 meses, de 787 pacientes hospitalizados, 156 (19.8 %) presentaron derrame pleural. También se evaluaron 22 casos de neumotórax considerados como derrame gaseoso y 10 con empiema crónico. Resu...

  6. 植物 MIR156a 对哺乳动物 JAM-A 的调控作用%ModuLation of pLant MIR156a to mammaLian JAM-A

    Institute of Scientific and Technical Information of China (English)

    侯冬霞; 曹鸣辉; 桑晓琳; 姜晓宏; 洪治

    2016-01-01

    植物 MIR156a 稳定存在于哺乳动物血清和组织中。为探讨 MIR156a 对哺乳动物的细胞间连接黏附分子(junction ad-hesion molecule-A,JAM-A)基因是否有调控作用,分别将人和小鼠 JAM-A 的3′非编码区(3′-UTR)序列亚克隆至 pMIR-RE-PORTTM质粒载体中。通过荧光素酶活性实验,研究 MIR156a 对其是否有直接的靶标作用。此外,对高表达 JAM-A 的人 Caco-2细胞和小鼠内皮细胞(mouse aortic endothelial cells,mAEC)细胞进行 MIR156a 干预,通过实时荧光定量 PCR 分析其对细胞中 JAM-A 的表达是否有影响。结果显示,MIR156a 能够明显降低表达人源 JAM-A 3′-UTR 报告质粒的荧光素酶活性,而对表达小鼠 JAM-A 3′-UTR 细胞的荧光素酶活性没有影响。同时,MIR156a 类似物显著降低 Caco-2中 JAM-A 的表达水平,而对mAEC 中 JAM-A 的表达没有影响。以上结果表明,MIR156a 对人源 JAM-A 有靶标作用,对小鼠 JAM-A 没有靶标作用。%Plant MIR156a exists stably in the serum and tissues of human and animals.To test whether MIR156a directly regu-lates mammalian Junction adhesion molecule-A (JAM-A ),human and murine JAM-A 3′-UTR sequence were cloned and con-structed into pMIR-REPORTTM vector,respectively.A luciferase reporter assay was performed after co-transfection 293T cells with MIR156a mimics and JAM-A 3′-UTR.Furthermore,quantitative real-time RT-PCR was applied to evaluate the expression level of JAM-A in Caco-2 cells and mouse aortic endothelial cells (mAEC)cells after overexpression of MIR156a.The results show that the luciferase activity decreases after co-transfection with MIR156a mimics and human JAM-A 3′-UTR.However, there is no significant change in the luciferase activity for the cells co-transfected with MIR156a and mouse JAM-A 3′-UTR. Meanwhile,the overexpression of MIR156a results in JAM-A expression decline in Caco-2 cells and no greatly change in mAEC cells

  7. microRNA156-targeted SPL/SBP box transcription factors regulate tomato ovary and fruit development.

    Science.gov (United States)

    Ferreira e Silva, Geraldo Felipe; Silva, Eder Marques; Azevedo, Mariana da Silva; Guivin, Mike Anderson Corazon; Ramiro, Daniel Alves; Figueiredo, Cassia Regina; Carrer, Helaine; Peres, Lázaro Eustáquio Pereira; Nogueira, Fabio Tebaldi Silveira

    2014-05-01

    Fruit ripening in tomato (Solanum lycopersicum L.) is well understood at the molecular level. However, information regarding genetic pathways associated with tomato ovary and early fruit development is still lacking. Here, we investigate the possible role(s) of the microRNA156/SQUAMOSA promoter-binding protein-like (SPL or SBP box) module (miR156 node) in tomato ovary development. miR156-targeted S. lycopersicum SBP genes were dynamically expressed in developing flowers and ovaries, and miR156 was mainly expressed in meristematic tissues of the ovary, including placenta and ovules. Transgenic tomato cv. Micro-Tom plants over-expressing the AtMIR156b precursor exhibited abnormal flower and fruit morphology, with fruits characterized by growth of extra carpels and ectopic structures. Scanning electron microscopy and histological analyses showed the presence of meristem-like structures inside the ovaries, which are probably responsible for the ectopic organs. Interestingly, expression of genes associated with meristem maintenance and formation of new organs, such as LeT6/TKN2 (a KNOX-like class I gene) and GOBLET (a NAM/CUC-like gene), was induced in developing ovaries of transgenic plants as well as in the ovaries of the natural mutant Mouse ear (Me), which also displays fruits with extra carpels. Conversely, expression of the MADS box genes MACROCALYX (MC) and FUL1/TDR4, and the LEAFY ortholog FALSIFLORA, was repressed in the developing ovaries of miR156 over-expressors, suggesting similarities with Arabidopsis at this point of the miR156/SPL pathway but with distinct functional consequences in reproductive development. Altogether, these observations suggest that the miR156 node is involved in maintenance of the meristematic state of ovary tissues, thereby controlling initial steps of fleshy fruit development and determinacy.

  8. 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

  9. Papillary lesions of the breast: outcomes of 156 patients managed without excisional biopsy.

    Science.gov (United States)

    Wyss, Paloma; Varga, Zsuzsanna; Rössle, Matthias; Rageth, Christoph J

    2014-01-01

    Papillomas of the breast are benign epithelial neoplasms. Because of the low, but continued potential for malignancy, the treatment options after initial diagnosis remain controversial. The aim of this study was to analyze the clinical course of patients with papilloma who were managed by active surveillance following initial diagnosis by core needle biopsy or vacuum-assisted biopsy. This retrospective study analyzed 174 patients with 180 papillomas that were diagnosed by core needle biopsy (113 cases) or vacuum-assisted biopsy (67 cases) at the Breast Center Seefeld Zurich between February 2002 and May 2011. We excluded 24 cases that underwent excisional biopsy for removal of the lesion. Over a mean follow-up of 3.5 years, 13 further events occurred in 156 cases (8%). These events included two cases of ductal carcinoma in situ (one after 4 and one after 6 years), one case of atypical ductal hyperplasia, one radial scar, eight cases of papilloma, and one case of flat epithelial atypia. No invasive carcinomas occurred during the follow-up period. Conservative management of 156 papillary lesions with removal by vacuum-assisted biopsy and surveillance was not associated with invasive cancer over a median follow-up of 3.5 years. Therefore, this approach seems to be a safe option for the clinical management of papillary lesions. © 2014 Wiley Periodicals, Inc.

  10. Treatment Results Of Diaphyseal Forearm Fractures With Dynamique Compression Plate A Retrospective study of 156 Cases.

    Directory of Open Access Journals (Sweden)

    Hassan BOUSSAKRI

    2016-03-01

    Full Text Available This retrospective study addresses a series of 156 cases of forearm fractures. These 156 cases were managed in the trauma-orthopedic department (B4 of Fez University Hospital, Morocco, from May 2008 till January 2013. The purpose of this study is to analyze epidemiological and clinical factors of diaphyseal forearm fractures and the results of their treatment with dynamic compression plate (DCP, as well as the complications and therapeutic errors of this surgical technique. The frequency of hospitalization in the trauma-orthopedic department was 3,96%. Ages ranged between 16 and 83, the average age was 32. 132 patients were male (85%. 90% were managed at the day of trauma. Traffic accidents were the most frequent cause in 52% patients. The fracture was in the left forearm in 65% of patients. 53% of fracture lines were in the middle third of the forearm. 38 fractures were open, and 30 were admitted for polytrauma. Osteosynthesis was performed with dynamic compression plate for all patients. In comparison with the literature, our series shows the predominance of young male patients, with traffic accidents being the cause. Osteosynthesis with dynamic compression plate remains the treatment of choice that provides satisfactory results if the accuracy in this technique was respected.

  11. Structure of Physarum polycephalum cytochrome b{sub 5} reductase at 1.56 Å resolution

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Sangwoo; Suga, Michihiro; Ogasahara, Kyoko [Institute for Protein Research, Osaka University, 3-2 Yamada-oka, Suita, Osaka (Japan); Ikegami, Terumi; Minami, Yoshiko; Yubisui, Toshitsugu [Department of Biochemistry, Okayama University of Science, 1-1 Ridai-cho, Okayama 700-0005 (Japan); Tsukihara, Tomitake, E-mail: tsuki@protein.osaka-u.ac.jp [Institute for Protein Research, Osaka University, 3-2 Yamada-oka, Suita, Osaka (Japan)

    2007-04-01

    The structure of P. polycephalum cytochrome b{sub 5} reductase, an enzyme which catalyzes the reduction of cytochrome b{sub 5} by NADH, was determined at a resolution of 1.56 Å. Physarum polycephalum cytochrome b{sub 5} reductase catalyzes the reduction of cytochrome b{sub 5} by NADH. The structure of P. polycephalum cytochrome b{sub 5} reductase was determined at a resolution of 1.56 Å. The molecular structure was compared with that of human cytochrome b{sub 5} reductase, which had previously been determined at 1.75 Å resolution [Bando et al. (2004 ▶), Acta Cryst. D60, 1929–1934]. The high-resolution structure revealed conformational differences between the two enzymes in the adenosine moiety of the FAD, the lid region and the linker region. The structural properties of both proteins were inspected in terms of hydrogen bonding, ion pairs, accessible surface area and cavity volume. The differences in these structural properties between the two proteins were consistent with estimates of their thermostabilities obtained from differential scanning calorimetry data.

  12. G156.2+5.7: SN 1006's older cousin

    Science.gov (United States)

    Allen, Glenn E.; Pannuti, Thomas; Iwanicki, Allana; Tan, William

    2016-04-01

    We report on the results of an analysis of the hydrodynamic properties of the supernova remnant G156.2+5.7. The models of Truelove and McKee (1999) are constrained by the observed amount of thermal X-ray emission, the measured temperature of the forward-shocked electrons, the inferred location of the reverse shock, and the observed amount of non-radiative Balmer line emission. The results suggest that the remnant is expanding into a low-density environment at a distance of at least 0.6 kpc. We review several clues that suggest the remnant was produced by a Type Ia supernova, which when combined with the other hydrodynamic constraints, implies that G156.2+5.7 is 2.6-15 kyr old, is 0.7-1.7 kpc from Earth (i.e. between Earth and the Perseus arm), and is surrounded by material with a hydrogen density of 0.046-0.075 cm-3. These properties are consistent with the remnant having a low radio surface brightness with a highly-ordered and highly-polarized, tangential magnetic field that is inclined by 60-70 degrees relative to the Galactic plane. However, the inferred density and age are not consistent with the fitted value of the ionization age, which may indicate that the momentum distribution of the electrons is not a Maxwell-Boltzmann distribution, but instead includes a high-energy, non-thermal tail.

  13. 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.

  14. 植物MIR156a对哺乳动物JAM-A的调控作用

    Institute of Scientific and Technical Information of China (English)

    侯冬霞; 曹鸣辉; 桑晓琳; 姜晓宏; 洪治

    2016-01-01

    植物MIR156a稳定存在于哺乳动物血清和组织中。为探讨MIR156a对哺乳动物的细胞间连接黏附分子(junction adhesion molecule-A,JAM-A)基因是否有调控作用,分别将人和小鼠JAM-A的3′非编码区(3′-UTR)序列亚克隆至pMIR-REPORTTM质粒载体中。通过荧光素酶活性实验,研究MIR156a对其是否有直接的靶标作用。此外,对高表达JAM-A的人Caco-2细胞和小鼠内皮细胞(mouse aortic endothelial cells,mAEC)细胞进行MIR156a干预,通过实时荧光定量PCR分析其对细胞中JAM-A的表达是否有影响。结果显示,MIR156a能够明显降低表达人源JAM-A 3′-UTR报告质粒的荧光素酶活性,而对表达小鼠JAM-A 3′-UTR细胞的荧光素酶活性没有影响。同时,MIR156a类似物显著降低Caco-2中JAM-A的表达水平,而对mAEC中JAM-A的表达没有影响。以上结果表明,MIR156a对人源JAM-A有靶标作用,对小鼠JAM-A没有靶标作用。

  15. Wheat related allergy – A retrospective single-centre study of 156 patient

    DEFF Research Database (Denmark)

    Junker Christensen, Morten

    2014-01-01

    to occupational rhinitis and/or asthma. Methods We retrospectively investigated 156 patients (age 0.7 – 73 years) with a case history of wheat allergy. The population was divided into three groups, I: wheat allergy elicited by ingestion of wheat, II: by inhalation and III: WDEIA. All were examined with detailed...... case history, specific IgE (s-IgE), (Thermofischer AB, Sweden), Skin Prick Test (SPT) and wheat challenge (nasal or oral ± exercise). Results Group I: Twenty one of 95 patients were challenge positive (15 children, 6 adults). All positive children had atopic dermatitis and 90 % also other food...... allergies. All outgrew their wheat allergy (median age for acquisition of tolerance, 1.9 years). Challenge positive patients showed significantly higher levels of s-IgE to wheat and significantly more were SPT positive and had larger wheal reactions to wheat. Challenge negative adults showed higher levels...

  16. Structure of Physarum polycephalum cytochrome b5 reductase at 1.56 A resolution.

    Science.gov (United States)

    Kim, Sangwoo; Suga, Michihiro; Ogasahara, Kyoko; Ikegami, Terumi; Minami, Yoshiko; Yubisui, Toshitsugu; Tsukihara, Tomitake

    2007-04-01

    Physarum polycephalum cytochrome b(5) reductase catalyzes the reduction of cytochrome b(5) by NADH. The structure of P. polycephalum cytochrome b(5) reductase was determined at a resolution of 1.56 A. The molecular structure was compared with that of human cytochrome b(5) reductase, which had previously been determined at 1.75 A resolution [Bando et al. (2004), Acta Cryst. D60, 1929-1934]. The high-resolution structure revealed conformational differences between the two enzymes in the adenosine moiety of the FAD, the lid region and the linker region. The structural properties of both proteins were inspected in terms of hydrogen bonding, ion pairs, accessible surface area and cavity volume. The differences in these structural properties between the two proteins were consistent with estimates of their thermostabilities obtained from differential scanning calorimetry data.

  17. Numerical simulation on electrolyte flow field in 156 kA drained aluminum reduction cells

    Institute of Scientific and Technical Information of China (English)

    ZHOU Nai-jun; XIA xiao-xia; WANG Fu-qiang

    2007-01-01

    Based on the commercial CFD software CFX-4.3, two-phase flow of electrolyte in 156 kA drained aluminum reduction cells with a new structure was numerically simulated by multi-fluid model and k-εturbulence model. The results show that the electrolyte flow in the drained cells is more even than in the conventional cells. Corresponding to center point feeding,the electrolyte flow in the drained cells is more advantageous to the release of anode gas, the dissolution and diflusion of alumina, and the gradient reduction of the electrolyte density and temperature. The average velocity of the electrolyte is 8.3 cm/s, and the maximum velocity is 59.5 cm/s.The average and maximum velocities of the gas are 23.2 cm/s and 61.1 cm/s, respectively. The cathode drained slope and anode cathode distance have certain effects on the electrolyte flow.

  18. Genetic variations in the osteopontin promoters T-443C and G-156GG increase carotid intima–media thickness

    Science.gov (United States)

    Yueniwati, Yuyun; Yurina, Valentina; Sobah, Nurus; Rahayu, Endang

    2016-01-01

    Carotid intima–media thickness (CIMT) is a clear predictor of atherosclerosis. The increase of CIMT is affected by mutations in the osteopontin (OPN) promoters. The purpose of this study was to examine genetic variations in OPN promoters T-443C and G-156GG, identified in Javanese children with ischemic stroke parents, and to investigate their relationship with the increase of CIMT. A case–control analytic study was performed on 20 case and 12 control samples. Case samples were Javanese children aged between 10 to 21 years with ischemic stroke parents. Control samples were children with healthy parents. Mutations of T-443C and G-156GG were determined by employing polymerase chain reaction. Results of sequencing were analyzed using CLC Main Workbench 6.0. CIMT was defined using ultrasound. Genetic variations of T-443C were identified in six samples. Likewise, genetic variations of G-156GG were identified in six samples. Genetic variations in the OPN promoters T-443C and G-156GG were not potential risk factors in an increase of CIMT (P=0.654 and P=0.654). This study proves that genetic variations could be identified at the points of T-443C and G-156GG in children with ischemic stroke parents. Although statistically insignificant, the tendency to increase CIMT occurs in children with genetic variations. Children with ischemic stroke parents have thicker CIMT than children of healthy parents. PMID:27274305

  19. Structure and gene cluster of the O-antigen of Escherichia coli O156 containing a pyruvic acid acetal.

    Science.gov (United States)

    Duan, Zhifeng; Senchenkova, Sof'ya N; Guo, Xi; Perepelov, Andrei V; Shashkov, Alexander S; Liu, Bin; Knirel, Yuriy A

    2016-07-22

    The lipopolysaccharide of Escherichia coli O156 was degraded under mild acidic and alkaline conditions and the resulting polysaccharides were studied by sugar analysis and (1)H and (13)C NMR spectroscopy. The following structure of the pentasaccharide repeating unit of the O-polysaccharide was established: where Rpyr indicates R-configurated pyruvic acid acetal. Minor O-acetyl groups also were present and tentatively localized on the Gal residues. The gene cluster for biosynthesis of the O-antigen of E. coli O156 was analyzed and shown to be consistent with the O-polysaccharide structure.

  20. Electric moments and charge deformation parameters in /sup 152/ /sup 154/Sm, /sup 156/Gd, and /sup 166/Er

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, H.; Kamke, D.; Kittling, H.J.; Kuhlmann, E.; Plicht, H.; Schormann, R.

    1977-03-01

    Coulomb excitation experiments with ..cap alpha.. particles were performed on the four rare-earth nuclei /sup 152/ /sup 154/Sm, /sup 156/Gd, and /sup 166/Er. E2 and E4 transition matrix elements of low-lying levels in the rotational ground-state bands were obtained. Model dependent charge deformation parameters ..beta../sup c//sub 2/ and ..beta../sup c//sub 4/ were extracted by assuming a deformed Fermi distribution with diffuse surface. The possible difference between charge and nuclear hexadecapole deformation observed in /sup 154/Sm does not show up in the isotone /sup 156/Gd.

  1. 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.

  2. 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.

  3. 非手术疗法治疗腰椎间盘突出症156例疗效观察%Clinical Observation on 156 Cases of Lumbar Disc Herniation with Non-operative Therapy

    Institute of Scientific and Technical Information of China (English)

    齐笑千

    2013-01-01

    Objective:To observe the efficacy of finger-pressing, chiropractic and manual traction method treating lumbar disc herniation. Methods:156 cases of lumbar disc herniation were treated with finger-pressing, chiropractic and manual traction method. Results:Among 156 patients, 73 cas-es were cured, with 75 cases improved and 8 cases ineffective, the total efficiency was 94.9%. Conclusion:The three kinds of treatment, with short courses of treatment and obvious effects, are worthy of clinical promotion.%  目的:观察指压过伸法、定位整脊法、人工牵引法治疗腰椎间盘突出症的疗效。方法:采用指压过伸法、定位整脊法、人工牵引法对156例腰椎间盘突出症患者进行治疗。结果:156例患者中,治愈73例,好转75例,无效8例,总有效率94.9%。结论:通过该三法治疗,疗程短,效果明显,值得临床推广。

  4. Complications of microvascular decompression in hemifacial spasm treatment Retrospective analysis of 156 cases

    Institute of Scientific and Technical Information of China (English)

    Yongfeng Sun; Guanghui Dai; Jun Yuan; Weidong Zhai; Jianwei Zhong; Tao Wang

    2008-01-01

    BACKGROUND: Microvascular decompression has become a well-accepted, safe method in the treatment of hemifacial spasms. However, postoperative complications exist and influence the prognosis of the disease.OBJECTIVE: This study aimed to analyze, by case review, the characteristics and regularity of microvascular decompression complications in the treatment of hemifacial spasm. DESIGN: Retrospective analysis.SETTING: Beijing General Group Hospital of the Chinese People's Armed Police Forces.PARTICIPANTS: A total of 156 patients with hemifacial spasm were admitted to the Department of Neurosurgery, Beijing General Group Hospital of the Chinese People's Armed Police Forces from June 2004 to June 2006 and recruited for this study. The patients, 57 males and 99 females, averaged 46 years of age (range 17-68-years old). All suffered from facial innervated muscular paroxysmal and recurrent contraction, which could not be controlled by consciousness. Electromyogram demonstrated waves of fibrillation and fasciculation. Prior to admission, all patients had received other treatments. Written informed consents for treatment were obtained from all patients. This protocol was approved by the Hospital’s Ethics Committee. METHODS: After anesthesia, a cranial bone pore was drilled below the connection of the lateral sinus and sigmoid sinus. Dura mater was dissected at the "⊥" shape and held in the air. Under microscopy, the flocculus cerebelli was lifted slightly up for convenient observation of the cerebellopontine angle. The mucous membrane was sharply separated. Corresponding vessels were identified at the root of the facial nerves and subsequently liberated and disassociated from the root exit zone. Suitably sized Teflon cotton was placed between the corresponding vessels and brain stem.MAIN OUTCOME MEASURES: Complications of microvascular decompression.RESULTS: All 156 patients participated in the final analysis. ① Postoperatively, 66 (42%) patients presented with obvious

  5. Transplantation of rib cartilage reshaped with 1.56 μm laser radiation in rabbits

    Science.gov (United States)

    Sobol, E.; Baum, O.; Alexandrovskaya, Yu.; Shekhter, A.; Selezneva, L.; Svistuskin, V.

    2017-02-01

    As cartilage is an ideal natural material for transplantation, its use in the ENT surgery is limited by a difficulty to get proper shape of cartilage implants. Aim of the work is to make ring-shaped cartilage implants, to check their stability after laser reshaping and to perform transplantation into rabbits in vivo. We experimented with costal cartilages of 1-2 mm in thickness obtained from 3rd and 4rd ribs of a rabbit. 1.56 μm laser (Arcuo Medical Inc.) was used for cartilage reshaping. The laser settings were established taking into account anisotropy of cartilage structure for different orientation of the implants. The reshaped cartilage implants were surgically sewn to rib cartilages of the other rabbits. The rabbits were slaughtered in 3.5-4 months after surgery. The results have shown that (1) all reshaped implants kept circular form, and (2) the implants were adhered to the native rabbit cartilage sites (3) pronounced signs of regeneration in the intermediate zones were observed. The prospects of the cartilage implants use in larynx stenosis surgery are discussed.

  6. Pre-operative sestamibi-technetium subtraction scintigraphy in primary hyperparathyroidism: Experience with 156 consecutive patients

    Energy Technology Data Exchange (ETDEWEB)

    Jones, J. Mark; Russell, Colin F.J.; Ferguson, W. Rodney; Laird, James D

    2001-07-01

    AIM: The aim of this study was to assess the usefulness of pre-operative sestamibi-technetium subtraction scintigraphy in a large cohort of patients with primary hyperparathyroidism (HPT). MATERIALS AND METHODS: A group of 156 consecutive patients with biochemically proven HPT underwent sestamibi-technetium subtraction scintigraphy before cervical exploration. Images were interpreted and reported prospectively and influenced the extent of surgical exploration. The intraoperative findings were compared retrospectively with the pre-operative scintigram reports in 154 individuals with technically satisfactory scintigrams. RESULTS: Of the 154 patients with satisfactory scintigrams, 122 (78.2%) demonstrated a single focus of activity following subtraction, 31 (19.9%) had negative findings and the remaining scintigram showed four foci of activity. At operation 138 (89.6%) solitary adenomas were removed, 13 patients (8.4%) had multi-gland disease and in three individuals (2.0%) no abnormal parathyroid tissue was found. The pre-operative scintigram accurately localized 91 of 98 (92.9%) solitary tumours weighing > 500 mg but only 18 of 35 (51.4%) adenomas weighing < 500 mg, (P < 0.0001). Overall sensitivity of sestamibi-technetium scintigraphy for localizing single parathyroid adenomas was 83.7%. CONCLUSION: Sestamibi-technetium subtraction scintigraphy will accurately localize a high proportion of solitary parathyroid adenomas but its usefulness is diminished by its inability to consistently identify smaller tumours. Jones, J.M. et al. (2001)

  7. Airway Management of Patients Undergoing Oral Cancer Surgery: A Retrospective Analysis of 156 Patients.

    Science.gov (United States)

    Nikhar, Sapna Annaji; Sharma, Ashima; Ramdaspally, Mahesh; Gopinath, Ramachandran

    2017-04-01

    Oral cancer patients have a potentially difficult airway, but if managed properly during the perioperative period, morbidity and mortality can be reduced or avoided. The medical records of 156 patients who were operated for oral cancers were reviewed for airway management during the perioperative period. The surgical procedures ranged from excisions, wide local excisions with split skin graftings, hemiglossectomies and radical neck nodes dissections to pectoralis major myocutaneous or free fibular flaps. Intubation was assessed as difficult in 14.7% of patients because of tumour- or radiation fibrosis-related trismus, restricted neck mobility and prior similar surgeries. Twenty patients had undergone surgery for oral cancer previously and were scheduled for flap reconstruction. Nasotracheal intubation was a preferred route, and 62.8% of patients could be intubated nasotracheally after neuromuscular blockade. Tracheostomy (elective or existing) was utilised for airway control in 19.2% cases. Patients who had undergone prior radiotherapy were more likely to be tracheostomised. McCoy laryngoscopes (13.4%), gum elastic bougies (23.6%), Airtraq devices (0.006%) and fibreoptic bronchoscopes (FOBs) (0.03%) were the additional airway techniques employed. In total, 64 patients (50.7%) could be extubated immediately after surgery. Proper preoperative evaluation and planning help manage difficult airways effectively with minimal need of advanced airway gadgets. Gum elastic bougies and Magill forceps are very useful in airway management and decrease the need of elective tracheostomy in oral cancer patients.

  8. A Study of Molecular Cloud Associated with the HII Region Sh156

    Science.gov (United States)

    Kang, Meejoo; Lee, Youngung

    2005-06-01

    We have conducted observations toward the molecular cloud associated with the HII region Sh 156 in tcocom (J=1-0), ȩocom(J=1-0), and CS(J=2-1) using the TRAO 14 m telescope. Combining with existing \\cocom(J=1-0) data of the Outer Galaxy Survey, we delineated the physical properties of the cloud. We found that there is a significant sign of interaction between the HII region and the molecular gas. We estimated the masses of the molecular cloud, using three different techniques; the most plausible mass is estimated to be 1.37 × 105 M⊙, using a conversion factor of X=1.9 × 1020 \\conf, and this is similar to virial mass estimate. This implies that the cloud is gravitationally bound and in virial equilibrium even though it is closely associated with the HII region. In addition to existing outflow, we found several MSX and IRAS point sources associated with dense core regions. Thus, more star forming activities other than the existing HII region are also going on in this region.

  9. Magnetic states stabilization in Ni51Mn33.4In15.6 Heusler alloy

    Directory of Open Access Journals (Sweden)

    Mohammadreza Ghahremani

    2015-12-01

    Full Text Available The rate-independent stabilization of magnetic states with iterations in a Heusler alloy has been studied. The direct measurement of the adiabatic temperature change, ΔTad, of a Ni51Mn33.4In15.6 alloy near the magnetostructural phase transition is presented. The adiabatic temperature change at a given temperature within the temperature range of the magnetostructural transition is history dependent and varies considerably with the iteration count of the field cycle. The data show the transition from the low magnetization state to the high magnetization state during low to high (L–H temperature change direction and from high magnetization to low magnetization state during high to low (H–L temperature change direction require several field cycles to stabilize the ΔTad measurement, similar to the accommodation phenomenon in hysteretic materials. In the mixed magnetic state inside the first-order transition, both low and high magnetization portions of the alloy exist and it varies considerably with the induced fields. This original observation emphasizes that it is incorrect to assess the performance of a magnetic refrigeration system through a single measurement, and that achieving a stable, utilizable, adiabatic temperature change requires several field-induced transitions.

  10. Er,Cr:YSGG laser labial frenectomy: a clinical retrospective evaluation of 156 consecutive cases.

    Science.gov (United States)

    Olivi, Giovanni; Chaumanet, Gilles; Genovese, Maria Daniela; Beneduce, Carla; Andreana, Sebastiano

    2010-01-01

    The labial frenum may impede oral hygiene and result in diastema between anterior teeth and traction of the attached gingiva. Surgical removal of the frenum during puberty has been recommended for these patients. This article clinically evaluates the efficacy of an Er,Cr:YSGG laser in removing the labial frenum in an adolescent and pre-pubescent population. Using an Er,Cr:YSGG laser at a power setting of 1.5 W or less and 20 to 30 pulses per second, a total of 156 frenectomies were performed on 143 children. Patients returned for recall visits at 3, 7, 21, and 30 days and at one, two, and three years. Surgical areas were checked for adverse events, recurrency of frenum, and functional complications. Patient acceptance was also evaluated by using the Wong-Baker FACES pain rating scale. Thirteen recurrences were reported in the adolescent population at 21 or 30 days, all of which required re-intervention; however, only two cases displayed recurrence of the frenum. None of the three pre-pubescent cases required additional intervention, maintaining acceptable clinical results after three years. Patient acceptance was very high, and no postoperative adverse events were reported.

  11. GDR emission in {sup 64}Ni+{sup 92}Zr{yields}{sup 156}Er reaction studies with GASP

    Energy Technology Data Exchange (ETDEWEB)

    Fabris, D. [Istituto Nazionale di Fisica Nucleare, Padua (Italy)

    1995-02-01

    The Giant Dipole Resonance (GDR) from the decay of excited {sup 156}Er nuclei has been studied with the GASP spectrometer. The correlations between the emission of energetic gamma rays, the fold k distribution and low energy discrete gamma lines have shown that standard statistical calculations can be used to describe not contained GDR gamma spectra. (author). 5 refs, 2 figs.

  12. Specific gravity and other properties of wood and bark for 156 tree species found in North America

    Science.gov (United States)

    Patrick D. Miles; W. Brad. Smith

    2009-01-01

    This paper reports information for the estimation of biomass for 156 tree species found in North America for use in national forest inventory applications. We present specific gravities based on average green volume as well as 12 percent moisture content volume for calculation of oven-dry biomass....

  13. International distribution and age estimation of the Portuguese BRCA2 c.156_157insAlu founder mutation

    NARCIS (Netherlands)

    Peixoto, Ana; Santos, Catarina; Pinheiro, Manuela; Pinto, Pedro; Soares, Maria Jose; Rocha, Patricia; Gusmao, Leonor; Amorim, Antonio; van der Hout, Annemarie; Gerdes, Anne-Marie; Thomassen, Mads; Kruse, Torben A.; Cruger, Dorthe; Sunde, Lone; Bignon, Yves-Jean; Uhrhammer, Nancy; Cornil, Lucie; Rouleau, Etienne; Lidereau, Rosette; Yannoukakos, Drakoulis; Pertesi, Maroulio; Narod, Steven; Royer, Robert; Costa, Mauricio M.; Lazaro, Conxi; Feliubadalo, Lidia; Grana, Begona; Blanco, Ignacio; de la Hoya, Miguel; Caldes, Trinidad; Maillet, Philippe; Benais-Pont, Gaelle; Pardo, Bruno; Laitman, Yael; Friedman, Eitan; Velasco, Eladio A.; Duran, Mercedes; Miramar, Maria-Dolores; Rodriguez Valle, Ana; Calvo, Maria-Teresa; Vega, Ana; Blanco, Ana; Diez, Orland; Gutierrez-Enriquez, Sara; Balmana, Judith; Ramon y Cajal, Teresa; Alonso, Carmen; Baiget, Montserrat; Foulkes, William; Tischkowitz, Marc; Kyle, Rachel; Sabbaghian, Nelly; Ashton-Prolla, Patricia; Ewald, Ingrid P.; Rajkumar, Thangarajan; Mota-Vieira, Luisa; Giannini, Giuseppe; Gulino, Alberto; Achatz, Maria I.; Carraro, Dirce M.; de Paillerets, Brigitte Bressac; Remenieras, Audrey; Benson, Cindy; Casadei, Silvia; King, Mary-Claire; Teugels, Erik; Teixeira, Manuel R.

    2011-01-01

    The c.156_157insAlu BRCA2 mutation has so far only been reported in hereditary breast/ovarian cancer (HBOC) families of Portuguese origin. Since this mutation is not detectable using the commonly used screening methodologies and must be specifically sought, we screened for this rearrangement in a to

  14. International distribution and age estimation of the Portuguese BRCA2 c.156_157insAlu founder mutation

    DEFF Research Database (Denmark)

    Peixoto, Ana; Santos, Catarina; Pinheiro, Manuela;

    2011-01-01

    The c.156_157insAlu BRCA2 mutation has so far only been reported in hereditary breast/ovarian cancer (HBOC) families of Portuguese origin. Since this mutation is not detectable using the commonly used screening methodologies and must be specifically sought, we screened for this rearrangement in a...

  15. Negative Regulation of Anthocynanin Biosynthesis in Arabidopsis by a miR156-Targeted SPL Transcription Factor

    Energy Technology Data Exchange (ETDEWEB)

    Gou, J.Y.; Liu, C.; Felippes, F. F.; Weigel, D.; Wang, J.-W.

    2011-04-01

    Flavonoids are synthesized through an important metabolic pathway that leads to the production of diverse secondary metabolites, including anthocyanins, flavonols, flavones, and proanthocyanidins. Anthocyanins and flavonols are derived from Phe and share common precursors, dihydroflavonols, which are substrates for both flavonol synthase and dihydroflavonol 4-reductase. In the stems of Arabidopsis thaliana, anthocyanins accumulate in an acropetal manner, with the highest level at the junction between rosette and stem. We show here that this accumulation pattern is under the regulation of miR156-targeted SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) genes, which are deeply conserved and known to have important roles in regulating phase change and flowering. Increased miR156 activity promotes accumulation of anthocyanins, whereas reduced miR156 activity results in high levels of flavonols. We further provide evidence that at least one of the miR156 targets, SPL9, negatively regulates anthocyanin accumulation by directly preventing expression of anthocyanin biosynthetic genes through destabilization of a MYB-bHLH-WD40 transcriptional activation complex. Our results reveal a direct link between the transition to flowering and secondary metabolism and provide a potential target for manipulation of anthocyanin and flavonol content in plants.

  16. PtoMYB156 is involved in negative regulation of phenylpropanoid metabolism and secondary cell wall biosynthesis during wood formation in poplar

    Science.gov (United States)

    Yang, Li; Zhao, Xin; Ran, Lingyu; Li, Chaofeng; Fan, Di; Luo, Keming

    2017-01-01

    Some R2R3 MYB transcription factors have been shown to be major regulators of phenylpropanoid biosynthetic pathway and impact secondary wall formation in plants. In this study, we describe the functional characterization of PtoMYB156, encoding a R2R3-MYB transcription factor, from Populus tomentosa. Expression pattern analysis showed that PtoMYB156 is widely expressed in all tissues examined, but predominantly in leaves and developing wood cells. PtoMYB156 localized to the nucleus and acted as a transcriptional repressor. Overexpression of PtoMYB156 in poplar repressed phenylpropanoid biosynthetic genes, leading to a reduction in the amounts of total phenolic and flavonoid compounds. Transgenic plants overexpressing PtoMYB156 also displayed a dramatic decrease in secondary wall thicknesses of xylem fibers and the content of cellulose, lignin and xylose compared with wild-type plants. Transcript accumulation of secondary wall biosynthetic genes was down-regulated by PtoMYB156 overexpression. Transcriptional activation assays revealed that PtoMYB156 was able to repress the promoter activities of poplar CESA17, C4H2 and GT43B. By contrast, knockout of PtoMYB156 by CRISPR/Cas9 in poplar resulted in ectopic deposition of lignin, xylan and cellulose during secondary cell wall formation. Taken together, these results show that PtoMYB156 may repress phenylpropanoid biosynthesis and negatively regulate secondary cell wall formation in poplar. PMID:28117379

  17. 1.56 Micron Spectropolarimetry of Umbral Dots and Their Evolution Associated with a Major Flare

    Science.gov (United States)

    Deng, Na; Liu, Chang; Xu, Yan; Ahn, Kwangsu; Jing, Ju; Cao, Wenda; Wang, Haimin

    2017-08-01

    We present unprecedented high-resolution and high magnetic sensitivity spectropolarimetric characterization of umbral dots (UDs), the prevailing fine scale brightness structure manifesting magneto-convection inside sunspot umbrae where the magnetic fields are strongest and nearly vertical. This is made available by recent development of the Near InfraRed Imaging Spectropolarimeter (NIRIS) using the 1.56 micron FeI line at the 1.6 meter New Solar Telescope of Big Bear Solar Observatory. Vector magnetograms are obtained after Milne-Eddington Stokes inversions, 180-degree azimuthal ambiguity resolution, and correction of projection effects. A βγδ spot in NOAA AR 12371 was observed for six hours on June 22, 2015 with a cadence of 87 s, which covered an M6.6 flare. The overall umbra is separated into several smaller umbrae by light bridges. The umbrae are close to the flaring polarity inversion line and show an average inclination of about 17° and field strength of about 2100 Gauss. The UDs are resolvable in NIRIS vector magnetograms, especially for peripheral UDs. The measured field strength is about 3% lower in UDs comparing to umbral cores (UCs) where the continuum intensity is below the threshold of UDs. The field is more inclined in UDs by 5% ( ≈ 1°) than that in UCs. One of the umbrae showed rapid evolution associated with the flare. Its overall intensity and the number of UDs decrease by at least 7% within two hours after being swept by the flare ribbon. NIRIS vector magnetograms indicate that the average field strength of that umbra has a rapid stepwise increase for about 100 Gauss while the inclination almost has no change. The decreases of the umbral brightness and the number of UDs are thus attributed to the increase of the field strength. The results suggest that the field strength plays the most important role in constraining convective heat transport in umbra.

  18. Beta-Decay Study of ^{150}Er, ^{152}Yb, and ^{156}Yb: Candidates for a Monoenergetic Neutrino Beam Facility

    Energy Technology Data Exchange (ETDEWEB)

    Estevez Aguado, M. E. [CSIC-Universidad de Valencia; Algora, A. [CSIC-Universidad de Valencia; Rubio, B. [CSIC-Universidad de Valencia; Bernabeu, J. [CSIC-Universidad de Valencia; Nacher, E. [CSIC-Universidad de Valencia; Tain, J. L. [CSIC-Universidad de Valencia; Gadea, A. [CSIC-Universidad de Valencia; Agramunt, J. [CSIC-Universidad de Valencia; Burkard, K. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Hueller, W. [GSI-Hemholtzzentrum fur Schwerionenforschung, Darmstadt, Germany; Doring, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kirchner, R. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Mukha, I. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Plettner, C. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Roeckl, E. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Grawe, H. [GSI-Hemholtzzentrum fur Schwerionenforschung, Darmstadt, Germany; Collatz, R. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Hellstrom, M. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Cano-Ott, D. [CIEMAT, Madrid; Karny, M. [University of Warsaw; Janas, Z. [University of Warsaw; Gierlik, M. [University of Warsaw; Plochocki, A. [University of Warsaw; Rykaczewski, Krzysztof Piotr [ORNL; Batist, L. [Petersburg Nuclear Physics Institute, Gatchina, Russia; Moroz, F. [Petersburg Nuclear Physics Institute, Gatchina, Russia; Wittman, V. [Petersburg Nuclear Physics Institute, Gatchina, Russia; Blazhev, A. [University of Cologne; Valiente, J. J. [INFN, Laboratori Nazionali di Legnaro, Italy; Espinoza, C. [CFPT-IST, Lisbon

    2011-01-01

    The beta decays of ^{150}Er, ^{152}Yb, and ^{156}Yb nuclei are investigated using the total absorption spectroscopy technique. These nuclei can be considered possible candidates for forming the beam of a monoenergetic neutrino beam facility based on the electron capture (EC) decay of radioactive nuclei. Our measurements confirm that for the cases studied, the EC decay proceeds mainly to a single state in the daughter nucleus.

  19. International distribution and age estimation of the Portuguese BRCA2 c.156_157insAlu founder mutation.

    Science.gov (United States)

    Peixoto, Ana; Santos, Catarina; Pinheiro, Manuela; Pinto, Pedro; Soares, Maria José; Rocha, Patrícia; Gusmão, Leonor; Amorim, António; van der Hout, Annemarie; Gerdes, Anne-Marie; Thomassen, Mads; Kruse, Torben A; Cruger, Dorthe; Sunde, Lone; Bignon, Yves-Jean; Uhrhammer, Nancy; Cornil, Lucie; Rouleau, Etienne; Lidereau, Rosette; Yannoukakos, Drakoulis; Pertesi, Maroulio; Narod, Steven; Royer, Robert; Costa, Maurício M; Lazaro, Conxi; Feliubadaló, Lidia; Graña, Begoña; Blanco, Ignacio; de la Hoya, Miguel; Caldés, Trinidad; Maillet, Philippe; Benais-Pont, Gaelle; Pardo, Bruno; Laitman, Yael; Friedman, Eitan; Velasco, Eladio A; Durán, Mercedes; Miramar, Maria-Dolores; Valle, Ana Rodriguez; Calvo, María-Teresa; Vega, Ana; Blanco, Ana; Diez, Orland; Gutiérrez-Enríquez, Sara; Balmaña, Judith; Ramon y Cajal, Teresa; Alonso, Carmen; Baiget, Montserrat; Foulkes, William; Tischkowitz, Marc; Kyle, Rachel; Sabbaghian, Nelly; Ashton-Prolla, Patricia; Ewald, Ingrid P; Rajkumar, Thangarajan; Mota-Vieira, Luisa; Giannini, Giuseppe; Gulino, Alberto; Achatz, Maria I; Carraro, Dirce M; de Paillerets, Brigitte Bressac; Remenieras, Audrey; Benson, Cindy; Casadei, Silvia; King, Mary-Claire; Teugels, Erik; Teixeira, Manuel R

    2011-06-01

    The c.156_157insAlu BRCA2 mutation has so far only been reported in hereditary breast/ovarian cancer (HBOC) families of Portuguese origin. Since this mutation is not detectable using the commonly used screening methodologies and must be specifically sought, we screened for this rearrangement in a total of 5,443 suspected HBOC families from several countries. Whereas the c.156_157insAlu BRCA2 mutation was detected in 11 of 149 suspected HBOC families from Portugal, representing 37.9% of all deleterious mutations, in other countries it was detected only in one proband living in France and in four individuals requesting predictive testing living in France and in the USA, all being Portuguese immigrants. After performing an extensive haplotype study in carrier families, we estimate that this founder mutation occurred 558 ± 215 years ago. We further demonstrate significant quantitative differences regarding the production of the BRCA2 full length RNA and the transcript lacking exon 3 in c.156_157insAlu BRCA2 mutation carriers and in controls. The cumulative incidence of breast cancer in carriers did not differ from that of other BRCA2 and BRCA1 pathogenic mutations. We recommend that all suspected HBOC families from Portugal or with Portuguese ancestry are specifically tested for this rearrangement.

  20. International distribution and age estimation of the Portuguese BRCA2 c.156_157insAlu founder mutation

    DEFF Research Database (Denmark)

    Peixoto, Ana; Santos, Catarina; Pinheiro, Manuela;

    2011-01-01

    The c.156_157insAlu BRCA2 mutation has so far only been reported in hereditary breast/ovarian cancer (HBOC) families of Portuguese origin. Since this mutation is not detectable using the commonly used screening methodologies and must be specifically sought, we screened for this rearrangement...... in a total of 5,443 suspected HBOC families from several countries. Whereas the c.156_157insAlu BRCA2 mutation was detected in 11 of 149 suspected HBOC families from Portugal, representing 37.9% of all deleterious mutations, in other countries it was detected only in one proband living in France and in four...... regarding the production of the BRCA2 full length RNA and the transcript lacking exon 3 in c.156_157insAlu BRCA2 mutation carriers and in controls. The cumulative incidence of breast cancer in carriers did not differ from that of other BRCA2 and BRCA1 pathogenic mutations. We recommend that all suspected...

  1. 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.

  2. 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.

  3. Bacillus cereus AR156 activates PAMP-triggered immunity and induces a systemic acquired resistance through a NPR1-and SA-dependent signaling pathway.

    Science.gov (United States)

    Niu, Dongdong; Wang, Xiujuan; Wang, Yanru; Song, Xiaoou; Wang, Jiansheng; Guo, Jianhua; Zhao, Hongwei

    2016-01-01

    Induced resistance responses play a potent role in plant defense system against pathogen attack. Bacillus cereus AR156 is a plant growth promoting rhizobacterium (PGPR) that installs induced systemic resistance (ISR) to Pseudomonas syringae pv. tomato (Pst) in Arabidopsis. Here, we show that AR156 leaf infiltration enhances disease resistance in Arabidopsis through the activation of a systemic acquired resistance (SAR). PR1 protein expression and reactive oxygen species (ROS) burst are strongly induced in plants treated with AR156 and inoculated with Pst than that in plants inoculated with Pst only. Moreover, AR156 can trigger SAR in jar1 or ein2 mutants, but not in the NahG transgenic and NPR1 mutant plants. Our results indicate that AR156-induced SAR depends on SA-signaling pathway and NPR1, but not JA and ET. Also, AR156-treated plants are able to rapidly activate MAPK signaling and FRK1 gene expression, which are involved in pathogen associated molecular pattern (PAMP)-triggered immunity (PTI). Altogether, our results indicate that AR156 can induce SAR by the SA-signaling pathways in an NPR1-dependent manner and involves multiple PTI components.

  4. High miR156 Expression Is Required for Auxin-Induced Adventitious Root Formation via MxSPL26 Independent of PINs and ARFs in Malus xiaojinensis

    Directory of Open Access Journals (Sweden)

    Xiaozhao Xu

    2017-06-01

    Full Text Available Adventitious root formation is essential for the vegetative propagation of perennial woody plants. During the juvenile-to-adult phase change mediated by the microRNA156 (miR156, the adventitious rooting ability decreases dramatically in many species, including apple rootstocks. However, the mechanism underlying how miR156 affects adventitious root formation is unclear. In the present study, we showed that in the presence of the synthetic auxin indole-3-butyric acid (IBA, semi-lignified leafy cuttings from juvenile phase (Mx-J and rejuvenated (Mx-R Malus xiaojinensis trees exhibited significantly higher expression of miR156, PIN-FORMED1 (PIN1, PIN10, and rootless concerning crown and seminal roots-like (RTCS-like genes, thus resulting in higher adventitious rooting ability than those from adult phase (Mx-A trees. However, the expression of SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE26 (SPL26 and some auxin response factor (ARF gene family members were substantially higher in Mx-A than in Mx-R cuttings. The expression of NbRTCS-like but not NbPINs and NbARFs varied with miR156 expression in tobacco (Nicotiana benthamiana plants transformed with 35S:MdMIR156a6 or 35S:MIM156 constructs. Overexpressing the miR156-resistant MxrSPL genes in tobacco confirmed the involvement of MxSPL20, MxSPL21&22, and MxSPL26 in adventitious root formation. Together, high expression of miR156 was necessary for auxin-induced adventitious root formation via MxSPL26, but independent of MxPINs and MxARFs expression in M. xiaojinensis leafy cuttings.

  5. 156株弗氏柠檬酸杆菌感染的分布与耐药性分析%Distribution and drug resistance of 156 strains of citrobacter freundii

    Institute of Scientific and Technical Information of China (English)

    刘广义

    2011-01-01

    OBJECTIVE To understand the distribution and drug resistance of citrobacter freundii, to provide a reasonable basis for clinicians to use anti-infective therapy. METHODS Totally 156 strains of Citrobacter freundii from patients from Oct 2008 to May 2010 were analyzed, the component ratio and the isolation rate from various department were calculated by referring to the National Clinical Laboratory Operation Rules, as well as the drug sensitivity testing was performed by K-B methods. RESULTS Of 156 strains of isolated citrobacter freundii, the isolates from department of respiratory medicine accounted for 39.1%, from department of neurology 15.4 %,from intensive care unit was 12.2% ; the main clinical specimens were collected from the sputum, the liquor purisand the urine, accounting for 60. 3%, 21. 2% and 7. 1%, respectively. Of 447 strains of detected pathogenic bacteria, there were 156 strains of citrobacter freundii, accounting for 34.9%; drug resistance rates of CFR to ampicillin and cefazolin were 100. 0% and 91.0%, which could cause multiple sites infection. CONCLUSION Hospital should attach importance to the monitoring and the controlling of multidrug-resistant citrobacter freundii and prevent the outbreak and epidemic of nosocomial infections.%目的 了解医院临床标本分离的弗氏柠檬酸杆菌(CFR)检出分布规律及耐药性特点,为临床医师合理抗感染治疗提供依据.方法 回顾性分析2008年1月-2010年5月,住院患者送检标本中分离的156株CFR,计算其构成比、科室分离率,鉴定按进行;药物敏感性试验采用CLSI推荐的K-B法.结果 分离的156株CFR中,呼吸内科检出占39.1%,神经内科占15.4%,综合ICU占12.2%;主要标本来源于痰液、脓液、尿液,分别占总数的60.3%、21.2%、7.1%;病原菌检出447株,检出CFR 156株,占34.9%;CFR对氨苄西林、头孢唑林的耐药性较强,耐药率分别为100.0%、91.0%,可引起多部位感染.结论应重视对多药

  6. Nuclear structure effects of the nuclei {sup 152,154,156}Dy at high excitation energy and large angular momentum

    Energy Technology Data Exchange (ETDEWEB)

    Martin, V. [Analisis Numerico, Facultad de Informatica, Universidad Politecnica de Madrid, E-28660 Madrid (Spain); Egido, J.L. [Departamento de Fisica Teorica C-XI, Universidad Autonoma de Madrid, E-28049 Madrid (Spain)

    1995-06-01

    Using the finite-temperature Hartree-Fock-Bogoliubov formalism we analyze the properties of the nuclei {sup 152,154,156}Dy at the quasicontinuum region from {ital I}=0{h_bar} to 70{h_bar} and excitation energy up to approximately 16 MeV. We discuss energy gaps, shapes, moments of inertia, and entropy among others. The role of shape fluctuations is studied in the frame of classical statistics and we find large effects on several observables. A very rich structure is found in terms of excitation energy and angular momentum.

  7. Transcription factors WRKY70 and WRKY11 served as regulators in rhizobacterium Bacillus cereus AR156-induced systemic resistance to Pseudomonas syringae pv. tomato DC3000 in Arabidopsis.

    Science.gov (United States)

    Jiang, Chun-Hao; Huang, Zi-Yang; Xie, Ping; Gu, Chun; Li, Ke; Wang, Da-Chen; Yu, Yi-Yang; Fan, Zhi-Hang; Wang, Chun-Juan; Wang, Yun-Peng; Guo, Ya-Hui; Guo, Jian-Hua

    2016-01-01

    The activation of both the SA and JA/ETsignalling pathways may lead to more efficient general and broad resistance to Pst DC3000 by non-pathogenic rhizobacteria. However, the mechanisms that govern this simultaneous activation are unclear. Using Arabidopsis as a model system, two transcription factors, WRKY11 and WRKY70, were identified as important regulators involved in Induced Systemic Resistance (ISR) triggered by Bacillus cereus AR156. The results revealed that AR156 treatment significantly stimulated the transcription of WRKY70, but suppressed that of WRKY11 in Arabidopsis leaves. Furthermore, they were shown to be required for AR156 enhancing the activation of cellular defence responses and the transcription level of the plant defence response gene. Overexpression of the two transcription factors in Arabidopsis also showed that they were essential for AR156 to elicit ISR. AR156-triggered ISR was completely abolished in the double mutant of the two transcription factors, but still partially retained in the single mutants, indicating that the regulation of the two transcription factors depend on two different pathways. The target genes of the two transcription factors and epistasis analysis suggested that WRKY11 regulated AR156-triggered ISR through activating the JA signalling pathway, and WRKY70 regulated the ISR through activating the SA signalling pathway. In addition, both WRKY11 and WRKY70 modulated AR156-triggered ISR in a NPR1-dependent manner. In conclusion, WRKY11 and WRKY70 played an important role in regulating the signalling transduction pathways involved in AR156-triggered ISR. This study is the first to illustrate the mechanism by which a single rhizobacterium elicits ISR by simultaneously activating both the SA and JA/ET signalling pathways.

  8. 小麦tae-MIR156前体基因的克隆及其靶基因TaSPL17多态性分析%Cloning of tae-MIR156 precursor gene and sequence polymorphisms of tae-miR156 targeted TaSPL17

    Institute of Scientific and Technical Information of China (English)

    刘霞; 张斌; 毛新国; 李昂; 孙美荣; 景蕊莲

    2014-01-01

    Squamosa-promoter binding protein (SBP)-box genes, encoding plant-specific transcription factors, play an important role in plant development. Some members of the SBP-box gene family are regulated by miR156. In this study, we cloned the tae-MIR156 precursor gene, which could form a stem loop after its transcription. Sequence analysis showed that TaSPL3 and TaSPL17 had putative targets of tae-miR156 among the ten wheat SBP-box genes. The diploid donor species of hexaploid common wheat (Triticum aestivum, genome AABBDD), i.e., Triticum urartu (AA) UR209 and Aegilops spel-toides Y2001 (SS, closely related to BB) possessed more than one copy of SPL17 (SPL17-A1, SPL17-A2 and SPL17-A3 from Triticum urartu;SPL17-B1, SPL17-B2 and SPL17-B3 from Aegilops speltoides), while Aegilops tauschii (DD) Ae38 only possessed one (SPL17-D). The identities between nucleotide sequences of SPL17-A2 and SPL17-B2, SPL17-A3 and SPL17-B3 or SPL17-D were higher than 99%. They were highly similar with the sequence of TaSPL17 in common wheat cultivars Chinese Spring, Hengguan 35 and Shuangfengshou. These genes might originate from a common ancestor and were highly conserved in the process of evolution. The target site of tae-miR156 in TaSPL17 was also highly conserved in two subgroups consisted of accessions with diverse spike number per plant and genetic background.%Squamosa-promoter binding protein (SBP)-box基因是植物特有的一类转录因子,广泛参与植物生长发育,其部分成员受miR156调控。文章克隆了小麦(Triticum aestivum) tae-MIR156前体基因,转录后能够形成茎环结构。小麦10个SBP-box基因中,仅TaSPL3和TaSPL17在编码区存在tae-miR156识别位点。SPL17在普通小麦的 A 基因组供体种乌拉尔图小麦(Triticum urartu, AA) UR209和 B 基因组供体种拟斯卑尔脱山羊草(Aegilops speltoides, BB) Y2001中均为多拷贝(SPL17-A1、SPL17-A2和SPL17-A3;SPL17-B1、SPL17-B2和SPL17-B3),在D基

  9. Regulation of OsSPL14 by OsmiR156 defines ideal plant architecture in rice.

    Science.gov (United States)

    Jiao, Yongqing; Wang, Yonghong; Xue, Dawei; Wang, Jing; Yan, Meixian; Liu, Guifu; Dong, Guojun; Zeng, Dali; Lu, Zefu; Zhu, Xudong; Qian, Qian; Li, Jiayang

    2010-06-01

    Increasing crop yield is a major challenge for modern agriculture. The development of new plant types, which is known as ideal plant architecture (IPA), has been proposed as a means to enhance rice yield potential over that of existing high-yield varieties. Here, we report the cloning and characterization of a semidominant quantitative trait locus, IPA1 (Ideal Plant Architecture 1), which profoundly changes rice plant architecture and substantially enhances rice grain yield. The IPA1 quantitative trait locus encodes OsSPL14 (SOUAMOSA PROMOTER BINDING PROTEIN-LIKE 14) and is regulated by microRNA (miRNA) OsmiR156 in vivo. We demonstrate that a point mutation in OsSPL14 perturbs OsmiR156-directed regulation of OsSPL14, generating an 'ideal' rice plant with a reduced tiller number, increased lodging resistance and enhanced grain yield. Our study suggests that OsSPL14 may help improve rice grain yield by facilitating the breeding of new elite rice varieties.

  10. A novel small molecule, HK-156, inhibits lipopoly-saccharide-induced activation of NF-κB signaling and improves survival in mouse models of sepsis

    Institute of Scientific and Technical Information of China (English)

    Jian-ping FANG; Yang LIU; Jie LI; Wen-feng LIAO; You-hong HU; Kan DING

    2012-01-01

    Aim:To characterize a small molecule compound HK-156 as a novel inhibitor of the nuclear factor KB (NF-KB) signaling pathway.Methods:THP-1 monocytes and HEK293/hTLR4A-MD2-CD14 cells were tested.HK-156 and compound 809,an HK-156 analogue,were synthesized.A luciferase assay was used to evaluate the transcriptional activity of NF-κB.The levels of cytokines were measured with cytokine arrays,ELISA and quantitative PCR.An electrophoretic mobility shift assay (EMSA),immunofluor.escence,Western blot and mass spectrometry were used to investigate the molecular mechanisms underlying the actions of the agent.BALB/c mice chal lenged with lipopolysaccharide (LPS,15 mg/kg,ip) were used as a mouse experimental endotoxemia model.Results:In HEK293hTLR4/NF-κB-luc cells treated with LPS (1000 ng/mL),HK-156 inhibited the transcriptional activity of NF-κB in a concentration-dependent manner(IC50=6.54±0.37 μmol/L).Pretreatment of THP-1 monocytes with HK-156 (5,10 and 20 μmol/L)significantly inhibited LPS-induced release and production of TNF-α and IL-1β,attenuated LPS-induced translocation of NF-κB into the nucleus and its binding to DNA,and suppressed LPS-induced phosphorylation and degradation of IκBα,and phosphorylation of IKKβ and TGFβ-activated kinase (TAK1).Meanwhile,HK-156 (5,10 and 20 μmol/L) slightly suppressed LPS-induced activation of p38.The effect of HK-156 on LPS-induced activation of NF-κB signaling was dependent on thiol groups of cysteines in upstream proteins.In mouse models of sepsis,pre-injection of HK-156 (50 mg/kg,iv) significantly inhibited TNFα production and reduced the mortality caused by the lethal dose of LPS.Conclusion:HK-156 inhibits LPS-induced activation of NF-κB signaling by suppressing the phosphorylation of TAK1 in vitro,and exerts beneficial effects in a mouse sepsis model.HK 156 may therefore be a useful therapeutic agent for treating sepsis.

  11. Analysis of 156 Cases of Emergency Trauma Treated by Abdominal Trauma%156例腹部损伤为主的急诊创伤救治分析

    Institute of Scientific and Technical Information of China (English)

    虞洋生; 付堂清; 杨再国

    2016-01-01

    Objective To summarize the experience in the treatment of abdominal trauma-based emergency patients and improve diagnosis and treatment.Methods Abdominal trauma-based emergency patients from January 2013 to July 2015 in AVIC 363 hospital and Sichuan Friendship hospital nearly half a year al 156 cases,a retrospective analysis of patients with the type of injury,treatment methods and complications and so on. Results 156 patients with ruptured spleen,liver rupture,rupture of small intestine,the highest incidence of kidney injury,and most patients were accompanied by other parts of the combined injury,some patients with pulmonary infection,gastrointestinal bleeding and so on.Clinical treatment is mainly determined on the basis of surgical abdominal cavity organ damage.After treatment cured 109 cases (69.9%),31 cases of disability (19.9%),16 cases of death(10.2%).Conclusion Rapid Aid and accurate diagnosis,a reasonable choice of surgical treatment sequence organ damage,reasonable use damage control,establishment of multi-trauma emergency treatment system to improve the integration of multiple injuries treatment success rate plays an important role.%目的:总结以腹部损伤为主急诊患者的救治经验,提高诊断和治疗水平。方法收集四川友谊医院和中航工业三六三医院2013年1月~2015年7月收治的以腹部损伤为主急诊患者156例,回顾性分析患者的损伤部位、急救方法及合并症。结果156例患者腹部损伤发生率较高的是脾损伤、肝损伤、肾脏损伤、小肠损伤,患者大都伴有其他部位的损伤,有的患者还出现消化道出血、肺部感染等合并症。临床急救方法按照腹腔损伤不同的脏器而决定。救治后治愈109例(69.9%),致残31例(19.9%),死亡16例(10.2%)。结论快速急救与准确诊断、合理选择损伤脏器的手术处理顺序、合理采用损伤控制、建立多发伤的急诊一体化救治体系对提高多发伤的救治成功率起重要作用。

  12. Test of the X(5) symmetry in {sup 156}Dy and {sup 178}Os by measurement of electromagnetic transition probabilities; Test der X(5)-Symmetrie in {sup 156}Dy und {sup 178}Os durch Messung elektromagnetischer Uebergangswahrscheinlichkeiten

    Energy Technology Data Exchange (ETDEWEB)

    Moeller, O.

    2005-07-01

    This work reports on results from two Recoil-Distance-Doppler-Shift lifetime measurements of excited states in {sup 155}Dy and {sup 178}Os. The experiments were carried out at the GASP spektrometer of the Laboratori Nazional i di Legnaro in combination with the Cologne plunger apparatus. The main purpose of the performed experiments was to test the predictions of the X(5) critical point symmetry in these two nuclei. In {sup 156}Dy and {sup 178}Os 29 lifetimes of excited states were derived using the Differential-Decay-Curve method. In weaker reaction channels the nuclei {sup 155}Dy, {sup 157}Dy and {sup 177}Os were populated. In these nuclei 32 additional lifetimes were measured, most of them for the first time. In order to calculate absolute transition probabilities from the measured lifetimes of the first excited band in {sup 156}Dy, essential branching ratios were derived from the measured data with a very small systematic error (<5%). The most important results can be summarized as mentioned below: Lifetimes measured in the first excited band, confirm that this nucleus can be located close to the critical point X(5). With model calculations, special criteria of the X(5) model were found that can be used to identify other X(5)-like nuclei. Using these criterias a new region of X(5)-like nuclei could be suggested within the osmium isotopes in the A=180 mass region. The measured lifetimes in {sup 178}Os confirm the consistency of a X(5) description in these nuclei. A comparision with the well established X(5)-like nuclei in the N=90 isotones gives an agreement with the X(5) description of at least the same quality. (orig.)

  13. miR156a Mimic Represses the Epithelial-Mesenchymal Transition of Human Nasopharyngeal Cancer Cells by Targeting Junctional Adhesion Molecule A.

    Directory of Open Access Journals (Sweden)

    Yunhong Tian

    Full Text Available MicroRNAs (miRNAs have been documented as having an important role in the development of cancer. Broccoli is very popular in large groups of the population and has anticancer properties. Junctional adhesion molecule A (JAMA is preferentially concentrated at tight junctions and influences cell morphology and migration. Epithelial-mesenchymal transition (EMT is a developmental program associated with cancer progression and metastasis. In this study we aimed to investigate the role of miRNAs from broccoli in human nasopharyngeal cancer (NPC. We demonstrated that a total of 84 conserved miRNAs and 184 putative novel miRNAs were found in broccoli by sequencing technology. Among these, miR156a was expressed the most. In addition, synthetic miR156a mimic inhibited the EMT of NPC cells in vitro. Furthermore, it was confirmed that JAMA was the target of miR156a mimic as validated by 3' UTR luciferase reporter assays and western blotting. Knockdown of JAMA was consistent with the effects of miR156a mimic on the EMT of NPC, and the up-regulation of JAMA could partially restore EMT repressed by miR156a mimic. In conclusion, these results indicate that the miR156a mimic inhibits the EMT of NPC cells by targeting the 3' UTR of JAMA. These miRNA profiles of broccoli provide a fundamental basis for further research. Moreover, the discovery of miR156a may have clinical implications for the treatment of patients with NPC.

  14. Myxoma virus M156 is a specific inhibitor of rabbit PKR but contains a loss-of-function mutation in Australian virus isolates.

    Science.gov (United States)

    Peng, Chen; Haller, Sherry L; Rahman, Masmudur M; McFadden, Grant; Rothenburg, Stefan

    2016-04-05

    Myxoma virus (MYXV) is a rabbit-specific poxvirus, which is highly virulent in European rabbits. The attenuation of MYXV and the increased resistance of rabbits following the release of MYXV in Australia is one of the best-documented examples of host-pathogen coevolution. To elucidate the molecular mechanisms that contribute to the restriction of MYXV infection to rabbits and MYXV attenuation in the field, we have studied the interaction of the MYXV protein M156 with the host antiviral protein kinase R (PKR). In yeast and cell-culture transfection assays, M156 only inhibited rabbit PKR but not PKR from other tested mammalian species. Infection assays with human HeLa PKR knock-down cells, which were stably transfected with human or rabbit PKR, revealed that only human but not rabbit PKR was able to restrict MYXV infection, whereas both PKRs were able to restrict replication of a vaccinia virus (VACV) strain that lacks the PKR inhibitors E3 and K3. Inactivation of M156R led to MYXV virus attenuation in rabbit cells, which was rescued by the ectopic expression of VACV E3 and K3. We further show that a mutation in the M156 encoding gene that was identified in more than 50% of MYXV field isolates from Australia resulted in an M156 variant that lost its ability to inhibit rabbit PKR and led to virus attenuation. The species-specific inhibition of rabbit PKR by M156 and the M156 loss-of-function in Australian MYXV field isolates might thus contribute to the species specificity of MYXV and to the attenuation in the field, respectively.

  15. Association between interferon gamma receptor 1-56C/T gene polymorphism and tuberculosis susceptibility: a meta-analysis

    Institute of Scientific and Technical Information of China (English)

    Wang Wei; Ren Weicong; Zhang Xuxia; Liu Yi; Li Chuanyou

    2014-01-01

    Background Genetic variations in the interferon-gamma (IFN-γ) receptor 1 gene (IFNGR1) may contribute to tuberculosis (TB) risk in different populations.Many studies have investigated the relationship between IFNGR1 56C/T polymorphism and the susceptibility to TB,but have yielded conflicting results.A comprehensive meta-analysis is needed to provide a more accurate estimation of the relationship between them.Methods A literature search based on a combination of manual and computer-based methods was conducted on four English databases (PubMed,Science Direct,SpringerLink,and EBSCO) and three Chinese databases (Wanfang,CQVIP,and Chinese National Knowledge Infrastructure databases).Pooled odds ratios (ORs) and 95% confidence intervals (95% Cls) were calculated using either the fixed-effects model or the random-effects model for different genetic models based on the heterogeneity examination.Results A total of six studies comprising 1 497 confirmed TB cases and 1 802 controls were included in this meta-analysis.Overall,no significant association was observed between IFNGR1-56C/T polymorphism and TB susceptibility (C vs.T,OR=0.90,95% Cl 0.69-1.17; CC vs.TT,OR=0.87,95% Cl 0.65-1.18; TC vs.TT,OR=-1.031,95% Cl 0.872-1.219; CC+TC vs.TT,OR=0.89,95% Cl 0.64-1.26; CC vs.TC+TT,OR=0.92,95% Cl 0.66-1.29).In subgroup analysis,a significant association was found in the dominant model (CC+TC vs.TT,OR=1.24,95% Cl 1.02-1.51) in Africans,but not in Asians or Caucasians.Conclusions Our meta-analysis did not provide enough powerful evidence to identify a significant association between IFNGR1-56C/T polymorphism and TB susceptibility in the overall population.In subgroup analysis,it indicates that IFNGR1-56C/T is possibly associated with increased TB risk in Africans,but not in Asians or Caucasians.However,larger sample size and better-designed case-control studies are needed to validate these findings.

  16. OCTOPUS 101型视野计检测156例视野临床统计分析

    Institute of Scientific and Technical Information of China (English)

    赵红地; 叶秀荣; 郭淑萍

    2006-01-01

    视野检查对很多眼科疾病及内科疾病的诊断和观察有重要的临床意义。应用视野计检查对某些眼病、青光眼的早期发现、神经科疾病的诊断和病情观察是不可缺少的方法之一。我科自2003年1月~2005年1月对156例312眼进行了视野检查,对这些检查资料进行统计学分析。

  17. Base-pair opening dynamics of the microRNA precursor pri-miR156a affect temperature-responsive flowering in Arabidopsis.

    Science.gov (United States)

    Kim, Hee-Eun; Kim, Wanhui; Lee, Ae-Ree; Jin, Suhyun; Jun, A Rim; Kim, Nak-Kyoon; Lee, Joon-Hwa; Ahn, Ji Hoon

    2017-03-18

    Internal and environmental cues, including ambient temperature changes, regulate the timing of flowering in plants. Arabidopsis miR156 represses flowering and plays an important role in the regulation of temperature-responsive flowering. However, the molecular basis of miR156 processing at lower temperatures remains largely unknown. Here, we performed nuclear magnetic resonance studies to investigate the base-pair opening dynamics of model RNAs at 16 °C and investigated the in vivo effects of the mutant RNAs on temperature-responsive flowering. The A9C and A10CG mutations in the B5 bulge of the lower stem of pri-miR156a stabilized the C15∙G98 and U16∙A97 base-pairs at the cleavage site of pri-miR156a at 16 °C. Consistent with this, production of mature miR156 was severely affected in plants overexpressing the A9C and A10CG constructs and these plants exhibited almost no delay in flowering at 16 °C. The A10G and A9AC mutations did not strongly affect C15∙G98 and U16∙A97 base-pairs at 16 °C, and plants overexpressing A10G and A9AC mutants of miR156 produced more mature miR156 than plants overexpressing the A9C and A10CG mutants and showed a strong delay in flowering at 16 °C. Interestingly, the A9AC mutation had distinct effects on the opening dynamics of the C15∙G98 and U16∙A97 base-pairs between 16 °C and 23 °C, and plants expressing the A9AC mutant miR156 showed only a moderate delay in flowering at 16 °C. Based on these results, we propose that fine-tuning of the base-pair stability at the cleavage site is essential for efficient processing of pri-miR156a at a low temperature and for reduced flowering sensitivity to ambient temperature changes. Copyright © 2017 Elsevier Inc. All rights reserved.

  18. Characterization of the P140K, PVP(138-140)MLK, and G156A O6-methylguanine-DNA methyltransferase mutants: implications for drug resistance gene therapy.

    Science.gov (United States)

    Davis, B M; Roth, J C; Liu, L; Xu-Welliver, M; Pegg, A E; Gerson, S L

    1999-11-20

    The G156A O6-alkylguanine-DNA alkyltransferase (AGT) mutant protein, encoded by the G156A O6-methylguanine-DNA methyltransferase gene (MGMT), is resistant to O6-benzylguanine (BG) inactivation and, after transduction into hematopoietic progenitors, transmits remarkable resistance to BG and BCNU. As a result, a clinical trial, in which the MGMT gene is transduced into CD34+ cells of patients with cancer, has been approved. A newly identified AGT mutation, P140K, generates dramatically increased BG resistance relative to G156A, and suggests that gene transfer of P140K may confer improved hematopoietic cell protection. To address this hypothesis, we measured BG + BCNU and BG + TMZ resistance in G156A, P140K, or P138M/V139L/P140K (MLK) MGMT-transduced K562 cells. In addition, we performed a detailed characterization of individual properties including BG resistance, activity, and protein stability of these mutants in human hematopoetic K562 cells and E86 retroviral producer cells. In K562 cell extracts, the MLK and P140K mutants retained full activity at doses up to 1 mM BG, while G156A had a BG ED50 of 15 microM, compared with 0.1 microM for wtAGT. In the absence of BG, the G156A protein possessed a 56% reduction in specific O6-methyltransferase activity compared with wtAGT. MLK, P140K, and wtAGT all possessed similar specific activities, although the O6-methyl repair rate of all mutants was reduced 4- to 13-fold relative to wtAGT. The wtAGT, MLK, and P140K proteins were stable, with half-lives of greater than 18 hr. In contrast, only 20% of the G156A protein was stable after 12 hr in cycloheximide and, interestingly, the remaining protein appeared to retain most of the activity present in non-cycloheximide-treated cells. Differences in BG resistance, activity, and stability between P140K, MLK, and G156A suggest that P140K may be the optimal mutant for drug resistance gene transfer. However, hematopoietic K562 cells transduced with MFG-G156A, P140K, or MLK had similar

  19. Bacillus cereus AR156 primes induced systemic resistance by suppressing miR825/825? and activating defense-related genes in Arabidopsis

    Institute of Scientific and Technical Information of China (English)

    Dongdong Niu; Hongwei Zhao; Jing Xia; Chunhao Jiang; Beibei Qi; Xiaoyu Ling; Siyuan Lin; Weixiong Zhang; Jianhua Guo; Hailing Jin

    2016-01-01

    Small RNAs play an important role in plant immune responses. However, their regulatory function in induced systemic resistance (ISR) is nascent. Bacillus cereus AR156 is a plant growth-promoting rhizobacterium that induces ISR in Arabidopsis against bacterial infection. Here, by comparing small RNA profiles of Pseudomonas syringae pv. tomato (Pst) DC3000-infected Arabidopsis with and without AR156 pretreatment, we identified a group of Arabidopsis microRNAs (miRNAs) that are differentially regulated by AR156 pretreatment. miR825 and miR825? are two miRNA generated from a single miRNA gene. Northern blot analysis indicated that they were significantly downregulated in Pst DC3000-infected plants pretreated with AR156, in contrast to the plants without AR156 pretreatment. miR825 targets two ubiquitin-protein ligases, while miR825? targets toll-interleukin-like receptor (TIR)-nucleotide binding site (NBS) and leucine-rich repeat (LRR) type resistance (R) genes. The expression of these target genes negatively correlated with the expression of miR825 and miR825?. Moreover, transgenic plants showing reduced expression of miR825 and miR825? displayed enhanced resistance to Pst DC3000 infection, whereas transgenic plants overexpressing miR825 and miR825? were more susceptible. Taken together, our data indicates that Bacillus cereus AR156 pretreatment primes ISR to Pst infection by suppressing miR825 and miR825? and activating the defense related genes they targeted.

  20. Bacillus cereus AR156 primes induced systemic resistance by suppressing miR825/825* and activating defense-related genes in Arabidopsis.

    Science.gov (United States)

    Niu, Dongdong; Xia, Jing; Jiang, Chunhao; Qi, Beibei; Ling, Xiaoyu; Lin, Siyuan; Zhang, Weixiong; Guo, Jianhua; Jin, Hailing; Zhao, Hongwei

    2016-04-01

    Small RNAs play an important role in plant immune responses. However, their regulatory function in induced systemic resistance (ISR) is nascent. Bacillus cereus AR156 is a plant growth-promoting rhizobacterium that induces ISR in Arabidopsis against bacterial infection. Here, by comparing small RNA profiles of Pseudomonas syringae pv. tomato (Pst) DC3000-infected Arabidopsis with and without AR156 pretreatment, we identified a group of Arabidopsis microRNAs (miRNAs) that are differentially regulated by AR156 pretreatment. miR825 and miR825* are two miRNA generated from a single miRNA gene. Northern blot analysis indicated that they were significantly downregulated in Pst DC3000-infected plants pretreated with AR156, in contrast to the plants without AR156 pretreatment. miR825 targets two ubiquitin-protein ligases, while miR825* targets toll-interleukin-like receptor (TIR)-nucleotide binding site (NBS) and leucine-rich repeat (LRR) type resistance (R) genes. The expression of these target genes negatively correlated with the expression of miR825 and miR825*. Moreover, transgenic plants showing reduced expression of miR825 and miR825* displayed enhanced resistance to Pst DC3000 infection, whereas transgenic plants overexpressing miR825 and miR825* were more susceptible. Taken together, our data indicates that Bacillus cereus AR156 pretreatment primes ISR to Pst infection by suppressing miR825 and miR825* and activating the defense related genes they targeted.

  1. Proximal disruption of base pairing of the second stem in the upper stem of pri-miR156a caused ambient temperature-sensitive flowering in Arabidopsis.

    Science.gov (United States)

    Kim, Wanhui; Jun, A Rim; Ahn, Ji Hoon

    2016-10-02

    MicroRNAs are generated from primary transcripts (pri-miRNAs) that form hairpin structures. Plant miRNAs play an important role in regulating flowering; however, little is known about the role of their structures in ambient temperature-responsive flowering. We recently showed that disruption of base pairing in the second stem (S2) in the upper stem of pri-miR156a caused hypersensitive flowering in response to ambient temperature changes. To further substantiate our findings on the role of S2 of pri-miR156a, we analyzed the effects of serial disruption (from the proximal or distal sides) of base-pairing in S2 of pri-miR156a on temperature-dependent flowering. We found that flowering time was gradually delayed with increasing size of the proximal disruption of S2 at 16°C. Particularly, disrupting base pairing of 5 nucleotides from the proximal side caused flowering to be hypersensitive to ambient temperature changes, which is similar to the phenotype of plants overexpressing pri-miR156a with a disruption of S2 (156-DBP-S2). However, disrupting base pairing from the distal side did not cause late flowering at 16°C and thus did not cause temperature-sensitive flowering. These results supported our notion that the second stem (S2) in the upper stem of pri-miR156a plays a role in the regulation of ambient temperature-responsive flowering.

  2. 初治肺结核并结核性脑膜炎156例疗效分析%Therapeutic Effect and Evaluation of 156 Initial Treatment of Pulmonary Tuberculosis Combined with Tubercular Meningitis

    Institute of Scientific and Technical Information of China (English)

    付毅; 毛毅; 陈洪德

    2015-01-01

    Objective To conclude therapeutic effect of the Initial treatment of pulmonary tuberculosis combined with tu-bercular meningitis, and explored how antituberculous plans influence the outcome of tuberculosis meningitis. Methods Retro-spective analysis of the treatment and therapeutic effect on 156 initial treatment of pulmonary tuberculosis combined with tubercular meningitis. Results Valid initial treatment:52(33. 34%), valid re-treatment:83(79. 81%), invalid treatment 21(13. 47%). Conclusion For valid rate of treating tuberculosis meningitis, re-treatment showed a better effect than initial treatment. The valid rate of treating advanced stage of tuberculosis meningitis was not satisfactory. Drug resistance rate performed low at primary stage. Some drugs easily penetrated through blood brain barrier( BBB) and were composed a reasonable antituberculous plan, which sig-nificantly enhanced the cure rate. To some degree, this plan can improve prognosis.%目的 总结初治肺结核并结核性脑膜炎的疗效,探讨抗结核方案对结核性脑膜炎转归的影响. 方法 回顾性分析我院156 例初治肺结核并结核性脑膜炎抗结核治疗及疗效. 结果 初治抗结核方案( HREZS )有效52 例(33. 34%),复治抗结核方案(Pas Pto PZA Lfx Am)有效83例(79. 81%),治疗无效21例(13. 47%). 结论 复治方案抗结核治疗有效率明显高于初治方案,晚期结核性脑膜炎治疗效果相对较差. 原发耐药率低、易透过血脑屏障的结核药组成合理的抗结核方案治疗,治愈率明显提高,可一定程度改善预后.

  3. 胰十二指肠切除胰腺空肠端侧吻合156例分析%Individualized end-side pancreaticojejunostomy for pancreaticoduodenectomy(156 cases reported)

    Institute of Scientific and Technical Information of China (English)

    焦猛; 刘毅; 刘恩宇; 郭森; 刘炎锋; 夏磊洲; 杨辉; 孟海鹏; 陈雨信

    2013-01-01

    目的:探讨胰十二指肠切除术中胰腺空肠端侧吻合技术.方法:回顾性分析山东大学齐鲁医院肝胆外科2004年3月-2012年6月156例胰十二指肠切除术行胰腺空肠端侧吻合患者的临床资料.根据胰腺的质地、厚度、胰管直径、胰管后壁胰腺组织的厚度、有无炎症,结合空肠的直径、空肠壁的厚度选择胰管-空肠黏膜-黏膜吻合、端侧套入式吻合等不同的吻合方式.结果:术中胰肠重新吻合8例.术后胰瘘3例、胆瘘2例、死亡2例.结论:胰十二指肠切除术中胰腺空肠吻合应根据患者的胰腺和空肠情况进行个体化选择.%Objectives To analyze the procedure of end-side pancreaticojejunostomy after pancreaticoduodenectomy(PD). Methods: The clinical data of 156 patients who underwent PD between March, 2004 and June, 2012 were reviewed retrospectively. Individualized end-side pancreaticojejunostomy was performed according to the pancreas testure, the thickness of pancreas body and posterior wall, the diameter of pancreatic duct and the pancreatitis combined with the diameter of jejunum and the thickness of the jejunum wall. Different kinds of end-side pancreaticojejunostoy contain duct-mucosa pancreaticojejunostomy and invaginated pancreaticojejunostomy. Results: Re-ananstomosis of pancreaticojejunostomy was performed on 8 patients during operation. Pan-creas fistula occurred on 3 patients, bile fistula occurred on 2 patients and 2 patients died. Conclusion: Individualized end-side pancreaticojejunostomy according to the local condition of the operation was optimal for pancreaticoduodenectomy.

  4. Spinning process of 1.56 dtex cationic dyeable hollow polyester staple fiber%1.56dtex阳离子可染中空涤纶短纤维的纺丝工艺

    Institute of Scientific and Technical Information of China (English)

    张勇; 刘秀清; 杜广; 肖刚

    2011-01-01

    采用阳离子可染聚酯切片为原料,熔融纺丝制得1.56 dtex阳离子可染中空涤纶短纤维,探讨了纺丝工艺参数对生产及纤维性能的影响.结果表明:控制干切片的含水率小于30μg/g,组件初始压力10.5~12.0 MPa,纺丝温度278-283℃,单孔吐出量0.39~0.45g/min,纺丝速度1 100~1 250m/min,环吹风速度0.9~1.1 m/s、温度24~27℃,纺丝过程顺利稳定,中空成形良好,纤维物理指标优良,其断裂强度为3.50cN/dtex,断裂伸长率为24%,中空度为15%.%A cationic dyeable hollow polyester staple fiber of 1.56 dtex was produced from cationic dyeable chips via melt spinning process. The effect of spinning parameters on the production and properties of the fiber was discussed. The results showed that the spinning process was smooth and stable and the resulted fiber had fairly good hollow formation and excellent physical index including breaking strength 3.50 cN/dtex, elongation at break 24% and hollowness 15% when the conditions were as followed: moisture content of dried chips below 30 μg/g, initial pressure of spinpack 10. 5 - 12. 0 Mpa, spinning temperature 278 - 283 ℃ , single-hole extrusion rate 0. 39 -0.45 g/min, spinning speed 1 100 - 1 250 m/min, circular air speed 0.9 - 1.1 m/s and temperature 24-27 ℃.

  5. 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

  6. 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

  7. Response of miR156-SPL Module during the Red Peel Coloration of Bagging-Treated Chinese Sand Pear (Pyrus pyrifolia Nakai).

    Science.gov (United States)

    Qian, Minjie; Ni, Junbei; Niu, Qingfeng; Bai, Songling; Bao, Lu; Li, Jianzhao; Sun, Yongwang; Zhang, Dong; Teng, Yuanwen

    2017-01-01

    MicroRNA156 is an evolutionarily highly conserved plant micro-RNA (miRNA) that controls an age-dependent flowering pathway. miR156 and its target SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) genes regulate anthocyanin accumulation in plants, but it is unknown whether this process is affected by light. Red Chinese sand pear (Pyrus pyrifolia) fruits exhibit a unique coloration pattern in response to bagging treatments, which makes them appropriate for studying the molecular mechanism underlying light-induced anthocyanin accumulation in fruit. Based on high-throughput miRNA and degradome sequencing data, we determined that miR156 was expressed in pear fruit peels, and targeted four SPL genes. Light-responsive elements were detected in the promoter regions of the miR156a and miR156ba precursors. We identified 19 SPL genes using the "Suli" pear (Pyrus pyrifolia Chinese White Pear Group) genome database, of which seven members were putative miR156 targets. The upregulated expression of anthocyanin biosynthetic and regulatory genes and downregulated expression of PpSPL2, PpSPL5, PpSPL7, PpSPL9, PpSPL10, PpSPL13, PpSPL16, PpSPL17, and PpSPL18 were observed in pear fruits after bags were removed from plants during the anthocyanin accumulation period. Additionally, miR156a/ba/g/s/sa abundance increased after bags were removed. Yeast two-hybrid results suggested that PpMYB10, PpbHLH, and PpWD40 could form a protein complex, probably involved in anthocyanin biosynthesis. Additionally, PpSPL10 and PpSPL13 interacted with PpMYB10. The results obtained in this study are helpful in understanding the possible role of miR156 and its target PpSPL genes in regulating light-induced red peel coloration and anthocyanin accumulation in pear.

  8. Study of fish attraction by platform THE 156, BMCAL4-BA-Brazil; Estudo sobre a atracao de peixes na plataforma de perfuracao THE 156, BMCAL4-Ba-Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Bertoncini, Athila A.; Jardweski, Cleiton F.; Daros, Felippe; Diogo, Hugo R.L.; Fraga, Adriana P.C. [SOMA, Belo Horizonte, MG (Brazil); Sampaio, Claudio L. [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil)

    2008-07-01

    To monitor the attraction effect of THE156 platform over the fisheries resources in shallow waters, close to coral reefs, at BM-CAL-4, underwater visual census (UVC) and video-census methods were used, along five reefs and the platform during three distinct moments: before, during and after the drilling operations. A total of 124 species were identified. The richest fish families were: Serranidae, Labridae, Haemulidae, Scaridae, Lutjanidae and Pomacentridae. Multi dimensional scaling analysis considering distinct moments and areas, pointed out three main groups. The largest, composed by natural reefs, and two other groups composed by the platform in distinct moments, before and after the operations. Since the template was left in the area after the drilling operations, this was the main factor contributing to create the latest group. This structure allowed an increment in abundance and species richness, creating a singular fish community, which inhabited the platform previously during its operation. The sampling design had as a hypothesis, an scale of impact in which if the platform could cause any impact over the fish communities, the closer reefs would be the first ones to be impacted. Considering this strategy, the differences found during the monitoring period, which occurred in the most southern reef area, do not characterize a direct impact of the platform over the natural reefs. (author)

  9. CuSCN-Based Inverted Planar Perovskite Solar Cell with an Average PCE of 15.6%.

    Science.gov (United States)

    Ye, Senyun; Sun, Weihai; Li, Yunlong; Yan, Weibo; Peng, Haitao; Bian, Zuqiang; Liu, Zhiwei; Huang, Chunhui

    2015-06-10

    Although inorganic hole-transport materials usually possess high chemical stability, hole mobility, and low cost, the efficiency of most of inorganic hole conductor-based perovskite solar cells is still much lower than that of the traditional organic hole conductor-based cells. Here, we have successfully fabricated high quality CH3NH3PbI3 films on top of a CuSCN layer by utilizing a one-step fast deposition-crystallization method, which have lower surface roughness and smaller interface contact resistance between the perovskite layer and the selective contacts in comparison with the films prepared by a conventional two-step sequential deposition process. The average efficiency of the CuSCN-based inverted planar CH3NH3PbI3 solar cells has been improved to 15.6% with a highest PCE of 16.6%, which is comparable to that of the traditional organic hole conductor-based cells, and may promote wider application of the inexpensive inorganic materials in perovskite solar cells.

  10. Genotype-phenotype relationships in the low-phospholipid-associated cholelithiasis syndrome: a study of 156 consecutive patients.

    Science.gov (United States)

    Poupon, Raoul; Rosmorduc, Olivier; Boëlle, Pierre Yves; Chrétien, Yves; Corpechot, Christophe; Chazouillères, Olivier; Housset, Chantal; Barbu, Véronique

    2013-09-01

    The low-phospholipid-associated cholelithiasis syndrome (LPAC; OMIM 171060) is a peculiar form of intrahepatic cholelithiasis occurring in young adults, associated with ABCB4/MDR3 gene sequence variations. Our aim was to determine the genotype-phenotype relationships in 156 consecutive patients with the criteria of LPAC syndrome. A variant was detected in 79 (61 missense and 18 truncating sequence variants), 63 being monoallelic. The clinical features (age at onset, high prevalence in women, frequency and severity of acute and chronic complications, intrahepatic cholestasis of pregnancy [ICP]) were similar in the patients with or without ABCB4 gene sequence variation. Truncating variations were associated with an earlier onset of symptoms both in women and men. Acute and chronic biliary complications were variant-independent. Half of the women who had pregnancy developed ICP. The frequency of ICP and fetal complications were similar in patients with missense and truncating variants. The LPAC syndrome is more frequent in women and highly associated with ICP. Half of the patients harbored missense or truncating variants of the ABCB4 gene. The characteristics of the patients without detectable variant are similar to those with variant, indicating that yet unexplored regions of the ABCB4 and other genes may be involved. © 2013 by the American Association for the Study of Liver Diseases.

  11. 1.56 µm sub-microjoule femtosecond pulse delivery through low-loss microstructured revolver hollow-core fiber

    Science.gov (United States)

    Krylov, Alexander A.; Senatorov, Andrey K.; Pryamikov, Andrey D.; Kosolapov, Alexey F.; Kolyadin, Anton N.; Alagashev, Grigory K.; Gladyshev, Alexey V.; Bufetov, Igor A.

    2017-03-01

    We report for the first time, to the best of our knowledge, on ~1 MW peak power femtosecond pulse delivery through  ≈10 m-long air-filled microstructured revolver hollow-core fiber (RHCF) in the telecom spectral band near 1.56 µm wavelength. We have developed a high-power all-fiber master oscillator power amplifier source based on the novel large-mode area erbium-doped double-clad fiber with 980 nm multi-mode diode pumping that emits up to 530 nJ pulses shorter than 400 fs with 1.42 W maximum average power. These pulses have been further launched into low-loss (<30 dB km‑1) RHCF with eight non-touched cylindrical capillaries-based cladding and 61 µm core size with more than 80% efficiency. Owing to low dispersion and nonlinearity of the RHCF developed, the output pulse characteristics (spectral and temporal) are close to the input ones for low and moderate pulse energies. However, we have observed significant nonlinear spectral filtering together with pulse shortening (down to 353 fs) at the maximum output average power of 0.94 W. We believe that the system developed may be highly promising for high-precision material processing and other high-energy and high-power laser applications.

  12. 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...

  13. Biochemical and structural characterization of quinoprotein aldose sugar dehydrogenase from Thermus thermophilus HJ6: Mutational analysis of Tyr156 in the substrate-binding site.

    Science.gov (United States)

    Kim, Han-Woo; Wang, Ji-Yeon; Lee, Ji-Yeon; Park, Ae-Kyung; Park, Hyun; Jeon, Sung-Jong

    2016-10-15

    The gene encoding a quinoprotein aldose sugar dehydrogenase (ASD) from Thermus thermophilus HJ6 (Tt_ASD) was cloned and sequenced; it comprised 1059 nucleotides encoding a protein containing 352 amino acids that had a predicted molecular mass of 38.9 kDa. The deduced amino acid sequence showed 42.9% and 33.9% identities to the ASD proteins from Pyrobaculum aerophilum and Escherichia coli, respectively. The biochemical properties of Tt_ASD were characterized. The optimum pH for the oxidation of glucose was 7.0-7.5 and the optimum temperature was 70 °C. The half-life of heat inactivation for the apoenzyme was about 25 min at 85 °C. The enzyme was highly thermostable, and the activity of the pyrroloquinoline quinone-bound holoenzyme was not lost after incubation at 85 °C for 100 min. Tt_ASD could oxidize various sugars, including hexoses, pentoses, disaccharides, and polysaccharides, in addition to alcohols. Structural analysis suggested that Tyr156 would be the substrate-binding residue. Two mutants, Y156A and Y156K, had impaired activities and affinities for all substrates and completely lost their activities for alcohols. This structural and mutational analysis of Tt_ASD demonstrates the crucial role of Tyr156 in determining substrate specificity.

  14. Application and further characterization of the snap bean S156/R123 ozone biomonitoring system in relation to ambient air temperature

    Science.gov (United States)

    Increased mixing ratios of ground-level ozone threaten individual plants, plant communities and ecosystems. In this sense, ozone biomonitoring is of great interest. The ozone-sensitive S156 and the ozone-tolerant R123 genotypes of snap bean (Phaseolus vulgaris L.) have been proposed as a potential t...

  15. 子宫瘢痕憩室致异常子宫出血156例临床分析%Clinical analysis of 156 abnormal uterine bleeding cases due to cesarean section scar diverticulum

    Institute of Scientific and Technical Information of China (English)

    龙英丽; 孙亚玲; 于景荣; 秦玉静

    2015-01-01

    目的:分析子宫瘢痕憩室引起异常子宫出血患者的临床表现、检查方法,为预防及治疗提供依据。方法回顾性分析因剖宫产术后子宫憩室引起异常子宫出血患者156例的临床资料,对检出率、患者临床症状出现时间及相关影响因素、检查情况、误诊情况进行分析。结果2010年异常出血者中发现憩室12例(5.6%),2011年发现憩室30例(10.5%),2012年发现憩室26例(8.6%),2013年发现憩室37例(14.4%),2014年发现憩室51例(17.7%)。48例患者症状出现时间为术后恢复月经1~6个月,89例为术后恢复月经6个月至2年,19例为术后恢复月经2年后。98例(62.82%)患者多次超声检查未发现明显异常,43例患者行诊断性刮宫,后位子宫与前位、中位子宫相比阴道流血时间明显延长。结论剖宫产子宫切口憩室致异常子宫出血发病率虽低,但是有较高的误诊、漏诊率,需进一步提高其诊断率,进一步研究其预防及治疗方法。%Objective To investigate the clinical manifestation and inspection method about abnormal uter-ine bleeding due to cesarean section scar diverticulum.Methods retrospective analysis of 156 abnormal uterine bleeding cases due to cesarean section scar diverticulum.Analysis the relevance ratio,the starting time of clinical symptom,related influencing factors,the information of examine and misdiagnose.Results there are 12 cases cesare-an section scar diverticulum in 2010;30 cases in 2011;26 cases in 2012;37 cases in 2013;51 cases in 2014.The starting time of clinical symptom is 1 ~6 month pose menstrual in 48 cases;6 months to 2 years pose menstrual in 89 cases,2 years later pose menstrual in 19 cases.98 cases don′t have evidential abnormality even through many times ultrasonograph.43 patients subjected diagnosis curettage.The uterine bleeding time obviously longer comparing retro-position of uterus with

  16. Association studies in Populus tomentosa reveal the genetic interactions of Pto-MIR156c and its targets in wood formation

    Directory of Open Access Journals (Sweden)

    Mingyang Quan

    2016-08-01

    Full Text Available MicroRNAs (miRNAs regulate gene expression in many biological processes, but the significance of the interaction between a miRNA and its targets in perennial trees remains largely unknown. Here, we employed transcript profiling and association studies in Populus tomentosa (Pto to decipher the effect of genetic variation and interactions between Pto-miR156c and its potential targets (Pto-SPL15, Pto-SPL20, and Pto-SPL25 in 435 unrelated individuals from a natural population of P. tomentosa. Single-SNP (single-nucleotide polymorphism based association studies with analysis of the underlying additive and dominant effects identified 69 significant associations (P 0.05 from Pto-MIR156c and its three potential targets, with six wood and growth traits, revealing their common roles in wood formation. Epistasis analysis uncovered 129 significant SNP-SNP associations with ten traits, indicating the potential genetic interactions of Pto-MIR156c and its three putative targets. Interestingly, expression analysis in stem (phloem, cambium, and xylem revealed that Pto-miR156c expression showed strong negative correlations with Pto-SPL20 (r = -0.90, P < 0.01 and Pto-SPL25 (r = -0.65, P < 0.01, and a positive correlation with Pto-SPL15 (r = 0.40, P < 0.01, which also indicated the putative interactions of Pto-miR156c and its potential targets and their common roles in wood formation. Thus, our study provided an alternative approach to decipher the interaction between miRNAs and their targets and to dissect the genetic architecture of complex traits in trees.

  17. 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.

  18. Influence of partial substitution of cerium for lanthanum on magnetocaloric properties of La1-xCexFe11.44Si1.56 and their hydrides

    Institute of Scientific and Technical Information of China (English)

    慕利娟; 黄焦宏; 张文佳; 刘翠兰; 王高峰; 赵增祺

    2014-01-01

    The structure and magnetocaloric properties of La1–xCexFe11.44Si1.56 and their hydrides La1–xCexFe11.44Si1.56Hy (x=0, 0.1, 0.2, 0.3, 0.4) were investigated. The samples crystallized mainly in the cubic NaZn13-type structure with a small amount ofα-Fe phase as impurity. The lattice constants and Curie temperature presented the same change tendency with increasing of Ce content. For the hydrides, the influence of Ce content on lattice constants was weakened and the values of H concentration y were approximate to be 1.56. The La1–xCexFe11.44Si1.56 compounds exhibited large values of isothermal entropy change –ΔSm around the Curie tem-perature TC under a low magnetic field change of 1.5 T. The value of–ΔSm increased and then decreased with increasing Ce con-tent, reached the maximum, 26.07 J/kg·K for x=0.3. TC increased up to the vicinity of room temperature by hydrogen absorption for the Ce substituted compounds, but TC only slightly decreased with increasing Ce content. The first-order metamagnetic transi-tion was still kept in the hydrides and the maximum values of–ΔSm were lower than those of the La1–xCexFe11.44Si1.56 compounds, but still remained large values, about 10.5 J/kgK under a magnetic field change of 1.5 T. The values of–ΔSm were nearly inde-pendent of the Ce content and did not increase with increasing x for the hydrides. The La1–xCexFe11.44Si1.56Hy (x=0–0.4) hydrides exhibited large magnetic entropy changes, small hysteresis loss and effective refrigerant capacity covered the room temperature range from 305 to 317 K. These hydrides are very useful for the magnetic refrigeration applications near room temperature under low magnetic field change.

  19. Urolitíase em cães: avaliação quantitativa da composição mineral de 156 urólitos Canine urolithiasis: quantitative evaluation of mineral composition of 156 uroliths

    Directory of Open Access Journals (Sweden)

    Mônica Kanashiro Oyafuso

    2010-02-01

    Full Text Available O estudo teve como objetivo avaliar os casos de urolitíase canina em que a composição mineral dos urólitos foi analisada quantitativamente. Foi avaliada quantitativamente a composição mineral de 156 urólitos obtidos de cães (nefrólitos, ureterólitos, urocistólitos e uretrólitos. Desse total, 79,5% (n=124 eram simples, 18% (n=28 eram compostos e apenas 2,5% (n=4 eram mistos. A estruvita foi o tipo mineral mais frequente nos urólitos simples (47,6%; n=59, em todos os mistos (100%; n=4 e nas camadas núcleo e pedra de urólitos compostos (32,1 e 75%, respectivamente. O oxalato de cálcio foi o segundo mineral mais frequente dos urólitos simples (37,9%, n=47. Ao contrário do que é preconizado para os urólitos simples, as recomendações para o tratamento de urólitos compostos são mais complexas, tais como protocolos de tratamento de dissolução diferentes (se composto por minerais distintos e passíveis de dissolução como urato e estruvita. Além disso, a dissolução pode não ser viável, caso ocorra presença de material insolúvel envolvendo o urólito ou se este representar mais de 20% da camada. Vinte e dois urólitos compostos (78,7% apresentaram uma camada externa não passível de dissolução (oxalato de cálcio ou fosfato de cálcio; dois (7,1% apresentaram camadas externas passíveis de dissolução (estruvita ou urato, porém camadas mais internas não solúveis, o que permitiria apenas a dissolução parcial do urólito. Assim, o conhecimento da composição de todas as camadas que compõem o urólito é essencial para o entendimento da formação do cálculo e consequentemente para a indicação do tratamento adequado, assim como para prevenção de recidivas.The aim of this study was to evaluate dogs with urolithiasis in which mineral composition of calculi was quantitatively analyzed. Quantitative mineral composition was performed in 156 canine uroliths. Simple uroliths represented 79.5% (n=124 of the cases, 18

  20. High efficient 1.56 microm laser operation of Czochralski grown Er:Yb:Sr3Y2(BO3)4 crystal.

    Science.gov (United States)

    Huang, Jianhua; Chen, Yujin; Lin, Yanfu; Gong, Xinghong; Luo, Zundu; Huang, Yidong

    2008-10-27

    An Er:Yb:Sr(3)Y(2)(BO(3))(4) crystal doped with 0.9 at.% Er(3+) and 18.6 at.% Yb(3+) ions was grown by the Czochralski method. End-pumped by diode laser at 970 nm in a hemispherical cavity, 1.3 W quasi-cw laser output around 1.56 microm was achieved in a 1.1-mm-thick Z-cut Er:Yb:Sr(3)Y(2)(BO(3))(4) crystal when the transmission of output coupler is 1.5%. The absorbed pump threshold and slop efficiency of the laser are 4.26 W and 20%, respectively. This crystal has flat and broad gain curve peaked around 1.56 microm, which shows that it is also a potential gain medium for tunable and short pulse lasers.

  1. Feminized tassels of maize mop1 and ts1 mutants exhibit altered levels of miR156 and specific SBP-box genes.

    Science.gov (United States)

    Hultquist, Judd F; Dorweiler, Jane E

    2008-12-01

    Development of the unisexual maize inflorescences requires the abortion of pistillate primordia in the florets of the developing tassel and the arrest of staminate primordia in the florets of the developing ears. Mutations of many genes that lie within this sexual differentiation pathway, such as tasselseed1 (ts1), or that influence this pathway, such as mediator of paramutation 1 (mop1), result in feminization of the normally male tassel. Here, we show the loss of mop1 or ts1 function results in increased mRNA levels for several members of the SBP-box gene family. Our analyses of this family expand the number of maize SBP-box genes from 9 to 31 members. Intron-exon structures as well as phylogenetic data support the division of these family members into six groups. The SBP-box genes upregulated in feminized tassels fall into two groups, share common structural motifs and include the presence of a target site for miR156. Small RNA blots show miR156 levels are decreased in both mop1 and ts1 mutants. While there is a correlation between miR156 levels and SBP-box gene transcript levels, this correlation is not absolute, and thus we hypothesize that decreased levels of miR156 may provide competency for SBP-box gene upregulation by other common factors yet to be identified. We present a model that provides a putative link between ts1, ts2, ts4, Ts6, and mop1 in the sex-determination pathway.

  2. The Polymorphism of DNA Repair Gene ERCC2/XPD Arg156Arg and Susceptibility to Breast Cancer in a Chinese Population

    DEFF Research Database (Denmark)

    Yin, J. Y.; Liang, D. H.; Vogel, Ulla Birgitte

    2009-01-01

    found between ERCC2/XPD Arg156Arg and risk of breast cancer (AA/AC versus CC: OR = 0.79, 95% CI = 0.49-1.28, P = 0.33; AA versus CC: OR = 0.89, 95% CI = 0.49-1.63, P = 0.72; AC versus CC: OR = 0.74, 95% CI = 0.44-1.24, P = 0.25). Breast cancer cases with the variant AA genotype were marginally younger...... the association between ERCC2/XPD Arg156Arg and susceptibility to breast cancer in a Chinese population, we conducted a hospital-based case-control study consisting of 129 patients with breast cancer and 205 controls matched by age, gender, and ethnicity. PCR-RFLP was used for genotyping. No associations were...... (mean age 45 years) than cases with the wild CC genotype (mean age 50 years) (P = 0.05). There were no differences in risk estimates in relation to menopause and occurrence of breast cancer. Our findings do not suggest that ERCC2/XPD Arg156Arg contributes to breast cancer susceptibility in a Chinese...

  3. Induced Systemic Resistance against Botrytis cinerea by Bacillus cereus AR156 through a JA/ET- and NPR1-Dependent Signaling Pathway and Activates PAMP-Triggered Immunity in Arabidopsis.

    Science.gov (United States)

    Nie, Pingping; Li, Xia; Wang, Shune; Guo, Jianhua; Zhao, Hongwei; Niu, Dongdong

    2017-01-01

    Induced resistance response is a potent and cost effective plant defense against pathogen attack. The effectiveness and underlying mechanisms of the suppressive ability by Bacillus cereus AR156 to Pseudomonas syringae pv. tomato DC3000 (Pst DC3000) in Arabidopsis has been investigated previously; however, the strength of induced systemic resistance (ISR) activity against Botrytis cinerea remains unknown. Here, we show that root-drench application of AR156 significantly reduces disease incidence through activation of ISR. This protection is accompanied with multilayered ISR defense response activated via enhanced accumulation of PR1 protein expression in a timely manner, hydrogen peroxide accumulation and callose deposition, which is significantly more intense in plants with both AR156 pretreatment and B. cinerea inoculation than that in plants with pathogen inoculation only. Moreover, AR156 can trigger ISR in sid2-2 and NahG mutants, but not in jar1, ein2 and npr1 mutant plants. Our results indicate that AR156-induced ISR depends on JA/ET-signaling pathway and NPR1, but not SA. Also, AR156-treated plants are able to rapidly activate MAPK signaling and FRK1/WRKY53 gene expression, both of which are involved in pathogen associated molecular pattern (PAMP)-triggered immunity (PTI). The results indicate that AR156 can induce ISR by the JA/ET-signaling pathways in an NPR1-dependent manner and involves multiple PTI components.

  4. Induced Systemic Resistance against Botrytis cinerea by Bacillus cereus AR156 through a JA/ET- and NPR1-Dependent Signaling Pathway and Activates PAMP-Triggered Immunity in Arabidopsis

    Science.gov (United States)

    Nie, Pingping; Li, Xia; Wang, Shune; Guo, Jianhua; Zhao, Hongwei; Niu, Dongdong

    2017-01-01

    Induced resistance response is a potent and cost effective plant defense against pathogen attack. The effectiveness and underlying mechanisms of the suppressive ability by Bacillus cereus AR156 to Pseudomonas syringae pv. tomato DC3000 (Pst DC3000) in Arabidopsis has been investigated previously; however, the strength of induced systemic resistance (ISR) activity against Botrytis cinerea remains unknown. Here, we show that root-drench application of AR156 significantly reduces disease incidence through activation of ISR. This protection is accompanied with multilayered ISR defense response activated via enhanced accumulation of PR1 protein expression in a timely manner, hydrogen peroxide accumulation and callose deposition, which is significantly more intense in plants with both AR156 pretreatment and B. cinerea inoculation than that in plants with pathogen inoculation only. Moreover, AR156 can trigger ISR in sid2-2 and NahG mutants, but not in jar1, ein2 and npr1 mutant plants. Our results indicate that AR156-induced ISR depends on JA/ET-signaling pathway and NPR1, but not SA. Also, AR156-treated plants are able to rapidly activate MAPK signaling and FRK1/WRKY53 gene expression, both of which are involved in pathogen associated molecular pattern (PAMP)-triggered immunity (PTI). The results indicate that AR156 can induce ISR by the JA/ET-signaling pathways in an NPR1-dependent manner and involves multiple PTI components. PMID:28293243

  5. 肥胖2型糖尿病患者趋化因子CXCL5基因启动子-156位点G/C多态性的研究%Study on CXCL5 Gene Promoter-156 G/C Polymorphisms in Obesity Type 2 Diabetes Mellitus

    Institute of Scientific and Technical Information of China (English)

    赵艳茹; 齐曦明; 尹福在; 刘波; 周钰; 刘文

    2013-01-01

    Objective To investigate the distribution of CXCL5 gene promoter - 156G/C polymorphism in obesity patients with type 2 diabetes mellitus ( T2DM ) and its relationship with T2DM. Methods 210 T2DM patients ( T2DM group ) admitted to the endocrinology department of our hospital from February to October in 2009 and 171 healthy people ( control group ) underwent physical examination in the same period were involved into the study. PCR - RFLP method was used to detect the polymorphism of CXCL5 gene promoter region - 156G/C in the two groups, and the height, body weight and BMI were also detected. The T2DM group and control group were further divided into non -obesity T2DM group, obesity T2DM group, non -obesity control group and obesity control group by taking BMI ≥25 kg/m2 as criteria. The genotype distribution of CXCL5 gene promoter region - 156G/C and allele frequency of the four groups were compared. Results The genotype distribution and allele frequency of CXCL5 gene promoter region - 156G/C between T2DM group and control group showed no statistically significant difference ( P> 0. 05 ), but there were statistically significant differences among the four sub - groups ( P 0. 05 ) . Conclusion The distribution of CXCL5 promoter gene - 156G/C polymorphism may relate to obesity, but may not a risk factor for T2DM. The mutation of CXCL5 promoter gene - 156G/C may play an important role in obesity.%目的 探讨肥胖2型糖尿病(T2DM)患者趋化因子CXCL5基因启动子-156位点G/C多态性分布及其与肥胖T2DM的关系.方法 选取2009年2-10月在我院内分泌科住院的T2DM患者210例(T2DM组)及同期在我院体检的健康者171例(对照组),应用聚合酶链反应限制性片段长度多态性(PCR-RFLP)技术检测两组受检者外周血趋化因子CXCL5基因启动子-156位点G/C多态性,并测量受检者的身高、体质量,计算体质指数(BMI).以BMI≥25 kg/m2为肥胖标准将T2DM组及对照组分为非肥胖T2DM组、肥胖T2DM组

  6. Cs-miR156 is involved in the nitrogen form regulation of catechins accumulation in tea plant (Camellia sinensis L.).

    Science.gov (United States)

    Fan, Kai; Fan, Dongmei; Ding, Zhaotang; Su, Yanhua; Wang, Xiaochang

    2015-12-01

    The nitrogen source affects the growth of tea plants and regulates the accumulation of catechins in the leaves. In this report, we assessed the influences of NH4(+) and NO3(-) on plant growth, catechins accumulation and associated gene expression. Compared with the preferential nitrogen source NH4(+), when NO3(-) was supplied as the sole nitrogen source, tea plants showed similar symptoms with the nitrogen-free treatments and showed lower nitrogen, free amino acid accumulation, chlorophyll content and biomass gain, indicating NO3(-) was not efficiently used by these plants. However, the total shoot catechins content was significantly higher for NO3(-) treatments than that for NH4(+) treatment or combined NH4(+)+NO3(-) treatment, suggesting that, in addition to its influence on plant growth, the nitrogen form regulated the accumulation of catechins in tea. The expression of catechins biosynthesis-related genes was associated with the regulation of catechins accumulation and composition changes mediated by nitrogen form. PAL, CHS, CHI, and DFR genes exhibited higher expression levels in plants supplied with NO3(-), in which the transcript level of DFR in the shoots was significantly correlated with the catechins content. In the end, we identified a new function for the Cs-miR156, which was drastically induced through NH4(+). Moreover, a potential mechanism of the Cs-miR156 pathway in regulating catechins biosynthesis in tea plants has been suggested, with particular respect to nitrogen forms. Cs-miR156 might repress the expression of the target gene SPL to regulate the DFR gene, which plays a vital role in catechins biosynthesis.

  7. Sequence analysis of 96 genomic regions identifies distinct evolutionary lineages within CC156, the largest Streptococcus pneumoniae clonal complex in the MLST database.

    Directory of Open Access Journals (Sweden)

    Monica Moschioni

    Full Text Available Multi-Locus Sequence Typing (MLST of Streptococcus pneumoniae is based on the sequence of seven housekeeping gene fragments. The analysis of MLST allelic profiles by eBURST allows the grouping of genetically related strains into Clonal Complexes (CCs including those genotypes with a common descent from a predicted ancestor. However, the increasing use of MLST to characterize S. pneumoniae strains has led to the identification of a large number of new Sequence Types (STs causing the merger of formerly distinct lineages into larger CCs. An example of this is the CC156, displaying a high level of complexity and including strains with allelic profiles differing in all seven of the MLST loci, capsular type and the presence of the Pilus Islet-1 (PI-1. Detailed analysis of the CC156 indicates that the identification of new STs, such as ST4945, induced the merging of formerly distinct clonal complexes. In order to discriminate the strain diversity within CC156, a recently developed typing schema, 96-MLST, was used to analyse 66 strains representative of 41 different STs. Analysis of allelic profiles by hierarchical clustering and a minimum spanning tree identified ten genetically distinct evolutionary lineages. Similar results were obtained by phylogenetic analysis on the concatenated sequences with different methods. The identified lineages are homogenous in capsular type and PI-1 presence. ST4945 strains were unequivocally assigned to one of the lineages. In conclusion, the identification of new STs through an exhaustive analysis of pneumococcal strains from various laboratories has highlighted that potentially unrelated subgroups can be grouped into a single CC by eBURST. The analysis of additional loci, such as those included in the 96-MLST schema, will be necessary to accurately discriminate the clonal evolution of the pneumococcal population.

  8. Regulation of the SQUAMOSA PROMOTER-BINDING PROTEIN-LIKE genes/microRNA 156 Module by the Homeodomain Proteins PENNYWISE and POUND-FOOLISH in Arabidopsis

    Institute of Scientific and Technical Information of China (English)

    Shruti Lal; Leo Bryan Pacis; Harley M.S. Smith

    2011-01-01

    The morphology of inflorescences is regulated in part by the temporal and spatial events that regulate flower specification.In Arabidopsis,an endogenous flowering time pathway mediated by a subset of SQUAMOSA PROMOTERBINDING PROTEIN-LIKE (SPL) transcription factors,including SPL3,SPL4,and SPL5,function to specify flowers by activating floral meristem identity genes.During shoot development,SPL3,SPL4,and SPL5 are post-transcriptionally regulated by microRNA156 (miR156).The photoperiod regulated florigenic signal,FLOWERING LOCUS T (FT),promotes floral induction,in part by activating SPL3,SPL4,and SPL5.In turn,these SPLs function in parallel with FT to specify flower meristems.Two related BELL1-like homeobox genes PENNYWISE (PNY) and POUND-FOOLISH (PNF) expressed in the shoot apical meristem are absolutely required for the specification of floral meristems.Genetic studies show that the floral specification function of FT depends upon PNY and PNF; however,the interplay between these homeodomain proteins and SPLs is not known.In this manuscript,we show that the photoperiodic floral induction of SPL3,SPL4,and SPL5 is dependent upon PNY and PNF.Further,PNY and PNF also control SPL3,SPL4,and SPL5 expression by negatively regulating miR156.Lastly,ectopic expression of SPL4 partially rescues the pny pnf non-flower-producing phenotype,while overexpression of SPL3 or SPL5 in pny pnf plants was unable to restore flower specification.These results suggest that:(1) SPL3,SPL4,and SPL5 function is dependent upon PNY and PNF,or (2) expression of multiple SPLs is required for floral specification in pny pnf plants.

  9. Numerical simulations of the cascades of the nuclei {sup 152,154,156}Dy with self-consistent collective strength functions

    Energy Technology Data Exchange (ETDEWEB)

    Khoo, T.L.; Lauritsen, T.; Martin, V.; Egido, J.L. [Universidad Autonoma de Madrid (Spain)

    1995-08-01

    Mean-field theories predict phase transitions in nuclei, such as a transition from collective to oblate shapes. However, fluctuations in the finite nucleus smear out the transition, and it is an interesting problem in mesoscopic physics to search for a remnant signature of the phase transition. Temperature-dependent Hartree-Fock theory predicts that the collective-to-oblate phase transition boundaries occur in a domain that can be favorably probed in experiments in {sup 152,154,156}Dy. These calculations were motivated by our past measurements of the quasicontinuum E2 spectra in these nuclei.

  10. Numerical simulation of the electromagnetic decay of the nuclei {sup 152,154,156}Dy with self-consistent collective strength functions

    Energy Technology Data Exchange (ETDEWEB)

    Martin, V. [Analisis Numerico, Facultad de Informatica, Universidad Politecnica de Madrid, E-28660 Madrid (Spain); Egido, J.L. [Departamento de Fisica Teorica C-XI, Universidad Autonoma de Madrid, E-28049 Madrid (Spain); Khoo, T.L.; Lauritsen, T. [Argonne National Laboratory, Argonne, Illinois 60439 (United States)

    1995-06-01

    The electromagnetic decay of the nuclei {sup 152,154,156}Dy is analyzed using microscopic Hartree-Fock calculations at finite temperature. The theoretical collective transition probabilities are implemented in numerical simulations to produce theoretical spectra. Thermal shape fluctuations are also taken into account. The inclusion of these correlation is crucial in order to understand the main features of the collective {ital E}2 spectra of these isotopes at different energies. The theoretical calculations suggest a shape change as responsible for the unusual features of the spectrum of the nucleus {sup 154}Dy at high energy.

  11. Constraining the Age and Distance of the Galactic Supernova Remnant G156.2+5.7 by H-alpha Expansion Measurements

    CERN Document Server

    Katsuda, Satoru; Morokuma, Tomoki; Fesen, Robert; Milisavljevic, Dan

    2016-01-01

    We present deep H-alpha images of portions of the X-ray bright but optically faint Galactic supernova remnant G156.2+5.7, revealing numerous and delicately thin nonradiative filaments which mark the location of the remnant's forward shock. These new images show that these filaments have a complex structure not visible on previous lower resolution optical images. By comparing H-alpha images taken in 2004 at the McDonald Observatory and in 2015-2016 at the Kiso Observatory, we set a stringent 1-sigma upper limit of expansion to be 0.06 arcsec/yr. This proper motion, combined with a shock speed of 500 km/s inferred from X-ray spectral analyses, gives a distance of > 1.7 kpc. In addition, a simple comparison of expansion indices of several SNRs allows us to infer the age of the remnant to be a few 10,000 yr old. These estimates are more straightforward and reliable than any other previous studies, and clearly rule out a possibility that G156.2+5.7 is physically associated with part of the Taurus-Auriga cloud and ...

  12. 根围促生细菌(PGPR)蜡质芽胞杆菌AR156对番茄的诱导耐旱性研究%Enhancement of Tomato(Lycopersicon esculentum) Tolerance to Drought Stress by Plant-Growth-Promoting Rhizobacterium (PGPR) Bacillus cereus AR156

    Institute of Scientific and Technical Information of China (English)

    王春娟; 郭亚辉; 王超; 刘红霞; 牛冬冬; 王云鹏; 郭坚华

    2012-01-01

    根围促生细菌(PGPR)蜡质芽胞杆菌(Bacillus cereus)AR156是具有很高应用前景的生防菌剂,为了研究其对番茄(Lycopersicon esculentum)的诱导耐旱机理,本研究通过检测干旱胁迫条件下叶片相对含水量、丙二醛(MDA)含量、相对电导率、叶绿素含量和根系还原能力,抗氧化酶活性以及胞质抗坏血酸还原酶基因(cAPX)、单脱氢抗坏血酸还原酶基因(MDHAR)和核酮糖-1,5-二磷酸羧化酶(Rubisco)小亚基基因(rbcS)的表达情况,从表型、生理水平和分子水平上进行阐释.研究发现,干旱胁迫条件下AR156培养上清诱导后,番茄叶片相对含水量为82%,与对照组相比提高了44%;MDA含量为2.2x10-3μmol/g FW,降低了21.4%,相对电导率为56.0%,降低了28.2%;叶绿素a、叶绿素b和总叶绿素含量分别增加了16%、20%和20.2%;根系还原强度为0.336 mg/g/h,是对照组的两倍;另外,超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性也显著提高;同时,分子水平的检测发现rbcS在干旱处理过程中—直保持较高水平,cA PX和MDHAR的表达在干旱处理后期也显著高于对照组;并且干旱胁迫处理20 d后重新浇水24 h,番茄存活率达到90.91%,比对照组高1.6倍.结果表明,AR156培养上清可以通过保护细胞膜的完整性、维持较高水平的光合效率和提高抗氧化酶活性来提高番茄的系统耐旱性,初步阐释了PGPR AR156的诱导耐旱机理,为AR156作为优良生物类耐旱诱导因子提供了理论依据.%Plant-growth promoting rhizobacterium (PGPR) Bacillus cereus AR156 is a potential bio-pesticide. In order to study the mechanism of drought tolerance in tomato (Lycopersicon esculentum) induced by B. cereus AR156, we tested relative water content, malondialdehyde (MDA) content, relative electrical conductivity and chlorophyll content of leaves and recovery intension of roots, the antioxidant enzymes activities and the

  13. Photometric and Spectroscopic Survey of the Cluster [DBS2003] 156 Associated with the H II Region G331.1-0.5

    Science.gov (United States)

    Pinheiro, M. C.; Ortiz, R.; Abraham, Z.; Copetti, M. V. F.

    2016-05-01

    The Norma section of the Milky Way is especially interesting because it crosses three spiral arms: Sagittarius-Carina, Scutum-Crux and the Norma arm itself. Distance determinations of embedded young stellar clusters can contribute to define the spiral structure in this part of the Galaxy. However, spectrophotometric distances were obtained for only a few of these clusters in Norma. We present a photometric and spectroscopic study in the NIR of the [DBS2003] 156 stellar cluster, associated with the H II region G331.1-0.5. We aim to find the ionizing sources of the H II region and determine its distance. The cluster was observed in the J, H, and {K}{{s}} bands and eight potential massive stars were chosen among the detected sources according to color criteria; subsequent spectroscopy of these candidates was performed with the Ohio State Infrared Imager/Spectrometer spectrograph attached to the Southern Observatory for Astrophysical Research 4.1 m telescope. We identified and classified spectroscopically four early-type stars: IRS 176 (O8 V), IRS 308 (O-type), IRS 310 (O6 V), and IRS 71 (B1 Iab). Based on the proximity of IRS 176 and 308 with the radio continuum emission peaks and their relative positions with respect to the warm dust mid-infrared emission, we concluded that these two stars are the main ionizing sources of the H ii region G331.1-0.5. The mean spectrophotometric distance of IRS 176 and 310 of 3.38 ± 0.58 kpc is similar to that obtained in a previous work for two early-type stars of the neighbor cluster [DBS2003] 157 of 3.29 ± 0.58 kpc. The narrow range of radial velocities of radio sources in the area of the clusters [DBS2003] 156 and 157 and their similar visual extinction indicate that these clusters are physically associated. A common distance of 3.34 ± 0.34 kpc is derived for the system [DBS2003] 156 and 157. Based on observations obtained at the Southern Observatory for Astrophysical Research (SOAR), a joint project of the Ministério de Ci

  14. Effects of letrozole in combination with low-dose intramuscular injection of human menopausal gonadotropin on ovulation and pregnancy of 156 patients with polycystic ovary syndrome

    Science.gov (United States)

    Chen, Zhihua; Zhang, Mengzhen; Qiao, Yuhuan; Yang, Junjuan

    2016-01-01

    Objective: To explore the effects of letrozole (LE) in combination with low-dose intramuscular injection of human menopausal gonadotropin (HMG) on the ovulation induction and pregnancy of patients with polycystic ovary syndrome (PCOS). Methods: A total of 156 patients with PCOS infertility were randomly divided into an LE group, a clomiphene citrate (CC) group and an LE + HMG group (n= 52). LE and CC were orally taken according to the prescribed dosage on the 3rd-5th days of menstruation respectively, and 75 IU HMG was given through intramuscular injection. The ovulation induction parameters and pregnancy outcomes were observed. Results: The number of ovulation cycle of LE + HMG group was significantly higher than that of LE group (χ2=8.451, Pinfertility. PMID:28083040

  15. Emergence of NDM-5- and MCR-1-Producing Escherichia coli Clones ST648 and ST156 from a Single Muscovy Duck (Cairina moschata).

    Science.gov (United States)

    Yang, Run-Shi; Feng, Youjun; Lv, Xiao-Yue; Duan, Jia-Hong; Chen, Jing; Fang, Liang-Xing; Xia, Jing; Liao, Xiao-Ping; Sun, Jian; Liu, Ya-Hong

    2016-11-01

    Two Escherichia coli clones (sequence type 648 [ST648] and ST156) that coproduce NDM-5 and MCR-1 were detected from a single fowl in China. The blaNDM-5 gene was found on the two indistinguishable IncX3 plasmids from the two different E. coli isolates, whereas the mcr-1 gene was located on IncHI2 and IncI2 plasmids, respectively, suggesting that blaNDM-5 and mcr-1 have spread in avian intestinal flora. Also, the two strains harbor blaTEM-1, blaCTX-M-55, fosA3, and aac(6')-Ib The multiresistant E. coli strains (especially the epidemic clone ST648) might raise a potential threat to human health via food chain transmission. Copyright © 2016, American Society for Microbiology. All Rights Reserved.

  16. Study on Expression Modes and Cleavage Role of miR156b/c/d and its Target Gene Vv-SPL9 During the Whole Growth Stage of Grapevine.

    Science.gov (United States)

    Wang, Baoju; Wang, Jian; Wang, Chen; Shen, Wenbiao; Jia, Haifeng; Zhu, Xudong; Li, Xiaopeng

    2016-01-01

    miR156 regulates the expression of its target SPL (PROMOTER BINDING-LIKE) genes during flower and fruit development, diverse developmental stage transitions, especially from vegetative to reproductive growth phases, by cleaving the target mRNA SPL of one plant-specific transcription factor. However, systematic reports on grapevine have yet to be presented. Here, the precise sequence of miR156 (vvi-miR156b/c/d) in grapevine "Takatsuma" was cloned with a previously cloned grapevine SPL (Vv-SPL9). Expression profiles in 18 grapevine tissues were identified through stem-loop RT-PCR. The interaction mode between vvi-miR156b/c/d and Vv-SPL9 was further validated by detecting the cleavage site and cleavage products of 3'- and 5'-ends via an integrated approach of 5'-RLM-RACE (RNA ligase-mediated 5'-rapid amplification of cDNA ends), 3'-PPM-RACE (poly(A) polymerase-mediated 3'-rapid amplification of cDNA ends), and qRT-PCR (real time reverse transcriptase-polymerase chain reaction). The variation in their cleavage roles in the whole growth stage of grapevine was also systematically investigated. Results showed that vvi-miR156b/c/d exhibited typical temporal-spatial-specific expression levels. The expression levels were higher in vegetative organs, such as leaf, than in reproductive organs, such as tendrils, flowers, and berries. A significant variation was observed during vegetative-to-reproductive transition. The expression patterns of Vv-SPL9 showed the opposite trends with those of vvi-miR156b. We confirmed that the cleavage site was at the 10th site of vvi-miR156b/c/d complementary to Vv-SPL9 in "Takatsuma" grapevine. We also identified the temporal-spatial variation of the cleavage products. This variation can indicate the regulatory function of miR156 on SPL in grapevines. Our findings provide further insights into the functions of vvi-miR156b/c/d and its target Vv-SPL9, and also help enrich our knowledge of small RNA-mediated regulation in grapevine.

  17. Identification of human papillomavirus type 156, the prototype of a new human gammapapillomavirus species, by a generic and highly sensitive PCR strategy for long DNA fragments.

    Science.gov (United States)

    Chouhy, Diego; Bolatti, Elisa M; Piccirilli, Gustavo; Sánchez, Adriana; Fernandez Bussy, Ramón; Giri, Adriana A

    2013-03-01

    This study developed a hanging-droplet long PCR, a generic and highly sensitive strategy to facilitate the identification of new human papillomavirus (HPV) genomes. This novel procedure used for the first time the hanging-droplet PCR technique for the amplification of long DNA fragments with generic primers targeting the L1 and E1 regions. It was first applied to the amplification of types belonging to the highly divergent genus Gammapapillovirus (γ-PV). The hanging-droplet long PCR was 100-fold more sensitive than a simple long PCR procedure, detecting as few as ten copies of HPV-4. Nineteen skin samples, potentially containing putative HPV types from the γ-PV genus, were also screened. The method identified four γ-PV genomic halves from new and previously described putative types, and made the full characterization of HPV-156 possible. This novel virus meets the criteria for a new species within the γ-PV genus, with nucleotide identities in the L1 ORF ranging from 58.3 to 67.3 % compared with representative types of the current γ-PV species. HPV-156 showed the highest identity to HPV-60 (67.3 %) from species γ-4, and was consistently closely related to it in both late- and early-gene-derived phylogenies. In conclusion, this report provides a versatile and highly sensitive approach that allowed identification of the prototype of a new species within the γ-PV genus. Its application with primers targeting the different genera in which both human and non-human PVs are distributed may facilitate characterization of the missing members of the family Papillomaviridae.

  18. In silico Prediction, in vitro Antibacterial Spectrum, and Physicochemical Properties of a Putative Bacteriocin Produced by Lactobacillus rhamnosus Strain L156.4.

    Science.gov (United States)

    Oliveira, Letícia de C; Silveira, Aline M M; Monteiro, Andréa de S; Dos Santos, Vera L; Nicoli, Jacques R; Azevedo, Vasco A de C; Soares, Siomar de C; Dias-Souza, Marcus V; Nardi, Regina M D

    2017-01-01

    A bacteriocinogenic Lactobacillus rhamnosus L156.4 strain isolated from the feces of NIH mice was identified by 16S rRNA gene sequencing and MALDI-TOF mass spectrometry. The entire genome was sequenced using Illumina, annotated in the PGAAP, and RAST servers, and deposited. Conserved genes associated with bacteriocin synthesis were predicted using BAGEL3, leading to the identification of an open reading frame (ORF) that shows homology with the L. rhamnosus GG (ATCC 53103) prebacteriocin gene. The encoded protein contains a conserved protein motif associated a structural gene of the Enterocin A superfamily. We found ORFs related to the prebacteriocin, immunity protein, ABC transporter proteins, and regulatory genes with 100% identity to those of L. rhamnosus HN001. In this study, we provide evidence of a putative bacteriocin produced by L. rhamnosus L156.4 that was further confirmed by in vitro assays. The antibacterial activity of the substances produced by this strain was evaluated using the deferred agar-spot and spot-on-the lawn assays, and a wide antimicrobial activity spectrum against human and foodborne pathogens was observed. The physicochemical characterization of the putative bacteriocin indicated that it was sensitive to proteolytic enzymes, heat stable and maintained its antibacterial activity in a pH ranging from 3 to 9. The activity against Lactobacillus fermentum, which was used as an indicator strain, was detected during bacterial logarithmic growth phase, and a positive correlation was confirmed between bacterial growth and production of the putative bacteriocin. After a partial purification from cell-free supernatant by salt precipitation, the putative bacteriocin migrated as a diffuse band of approximately 1.0-3.0 kDa by SDS-PAGE. Additional studies are being conducted to explore its use in the food industry for controlling bacterial growth and for probiotic applications.

  19. In silico Prediction, in vitro Antibacterial Spectrum, and Physicochemical Properties of a Putative Bacteriocin Produced by Lactobacillus rhamnosus Strain L156.4

    Directory of Open Access Journals (Sweden)

    Letícia de C. Oliveira

    2017-05-01

    Full Text Available A bacteriocinogenic Lactobacillus rhamnosus L156.4 strain isolated from the feces of NIH mice was identified by 16S rRNA gene sequencing and MALDI-TOF mass spectrometry. The entire genome was sequenced using Illumina, annotated in the PGAAP, and RAST servers, and deposited. Conserved genes associated with bacteriocin synthesis were predicted using BAGEL3, leading to the identification of an open reading frame (ORF that shows homology with the L. rhamnosus GG (ATCC 53103 prebacteriocin gene. The encoded protein contains a conserved protein motif associated a structural gene of the Enterocin A superfamily. We found ORFs related to the prebacteriocin, immunity protein, ABC transporter proteins, and regulatory genes with 100% identity to those of L. rhamnosus HN001. In this study, we provide evidence of a putative bacteriocin produced by L. rhamnosus L156.4 that was further confirmed by in vitro assays. The antibacterial activity of the substances produced by this strain was evaluated using the deferred agar-spot and spot-on-the lawn assays, and a wide antimicrobial activity spectrum against human and foodborne pathogens was observed. The physicochemical characterization of the putative bacteriocin indicated that it was sensitive to proteolytic enzymes, heat stable and maintained its antibacterial activity in a pH ranging from 3 to 9. The activity against Lactobacillus fermentum, which was used as an indicator strain, was detected during bacterial logarithmic growth phase, and a positive correlation was confirmed between bacterial growth and production of the putative bacteriocin. After a partial purification from cell-free supernatant by salt precipitation, the putative bacteriocin migrated as a diffuse band of approximately 1.0–3.0 kDa by SDS-PAGE. Additional studies are being conducted to explore its use in the food industry for controlling bacterial growth and for probiotic applications.

  20. 小儿腹泻156例经皮超声脉冲电导给药疗效观察

    Institute of Scientific and Technical Information of China (English)

    高建国; 孙庆霞; 宋燕玲; 胡美莲

    2013-01-01

    Objective:To observe the curative effect of transdermal drug delivery in the treatment of diarrhea in children. Methods: by percutaneous ultrasonic pulse conductance in treatment of children with diarrhea in 156 cases, and compared with 142 cases of control group. The results:of percutaneous treatment group total effective rate (99.3%) and the total effective rate of the control group (95%) had no significant difference, but diarrhea markedly effective rate (92.3%) was significantly higher than the control group (66%), the difference was statistical y significant (P<0. 05).Conclusion:percutaneous ultrasonic pulse conductance in treatment of children with diarrhea significantly, antidiarrheal time is short, enhance the curative effect, improve the cure rate.%目的:观察经皮给药治疗小儿腹泻的疗效。方法:采用经皮超声脉冲电导给药治疗小儿腹泻156例,并与142例对照组进行比较。结果:经皮治疗组总有效率(99.3%)与对照组总有效率(95%)差异无统计学意义,但腹泻显效率(92.3%)明显优于对照组(66%),差异有统计学意义(P<0.05)。结论:经皮超声脉冲电导给药治疗小儿腹泻疗效显著,止泻时间短,增强疗效,提高治愈率。

  1. 常规器械下经脐入路腹腔镜胆囊切除术156例经验总结%Experience of Transumbilical Single-site Laparoscopic Cholecystectomy with Conventional Devices: A Report of 156 Cases

    Institute of Scientific and Technical Information of China (English)

    吴庆华; 刘玉祥; 陈勇; 陈一伟; 束一鸣

    2013-01-01

    目的 探讨常规器械下经脐入路单一部位腹腔镜胆囊切除术(transumbilical single-site laparoscopic cholecystectomy,TUSLC)的安全性和可行性.方法 2010年6月~2012年9月应用常规器械行TUSLC 156例.围手术期处理及手术基本操作原则同传统LC.脐旁10 mm trocar,置入腹腔镜探查腹腔,在10 mm trocar左旁直接戳孔后置入5 mm直径操作钳,在10 mm trocar右旁置入10 mm trocar作为主操作孔.左右手器械交叉操作,顺逆结合切除胆囊.结果 5例为胆囊与周围组织粘连严重,探查后即中转为传统三孔 LC.余151例平均手术时间49.3 min(30 ~ 90 min),术中出血量25.7 ml(5 ~70 ml),肠功能恢复时间平均1.3 d(1~2d),术后住院时间平均2.3 d(1~3 d).156例术后随访1~24个月,平均10.8月,均无发热、腹痛、黄疸等术后胆道相关疾病症状,患者对脐部切口恢复的美容效果均满意.结论 常规器械下TUSLC安全可行.%Objective To investigate the safety and feasibility of transumbilical single-site laparoscopic cholecystectomy with conventional devices.Methods The study enrolled 156 patients undergoing transumbilical single-site laparoscopic cholecystectomy with conventional devices from June 2010 to September 2012 in Shanghai Armed Police Force Hospital.Perioperative treatments and basic surgical procedures were in accordance with traditional laparoscopic cholecystectomy.We inserted laparoscope into paraumbilical 10-mm trocar for abdominal exploration,then inserted 5-mm trocar and 10-mm trocar on the left and right of umbilicus for operation forceps of 5 mm in diameter and main procedures.Anterograde combined with retrograde cholecystectomy was performed.Results Of the 156 cases,5 cases were converted to conventional LC due to severe tissue adhesion.The operation time,intra-operative blood loss,bowel function recovery time and postoperative hospital stay of the rest cases were 49.3 min (range,30-90 min),25.7 ml (range,5-70 ml),1.3 days

  2. 156 | P a g e

    African Journals Online (AJOL)

    Fr. Ikenga

    Life is of the essence in every human existence, and protection of this right is of global concern. ... Today, despite the Universal Declaration of Human Rights ...... Article 33 of the Refugee convention prohibits forced return of persons facing a ...

  3. Small RNA profiles from Panax notoginseng roots differing in sizes reveal correlation between miR156 abundances and root biomass levels.

    Science.gov (United States)

    Zheng, Yun; Chen, Kun; Xu, Zhenning; Liao, Peiran; Zhang, Xiaotuo; Liu, Li; Wei, Kangning; Liu, Diqiu; Li, Yong-Fang; Sunkar, Ramanjulu; Cui, Xiuming

    2017-08-25

    Plant genomes encode several classes of small regulatory RNAs (sRNAs) that play critical roles in both development and stress responses. Panax notoginseng (Burk.) F.H. Chen (P. notoginseng) is an important traditional Chinese herbal medicinal plant species for its haemostatic effects. Therefore, the root yield of P. notoginseng is a major economically important trait since the roots of P. notoginseng are the parts used to produce medicine. To identify sRNAs that are critical for the root biomass of P. notoginseng, we performed a comprehensive study of miRNA transcriptomes from P. notoginseng roots of different biomasses. We identified 675 conserved miRNAs, of which 180 pre-miRNAs are also identified, and three TAS3 loci in P. notoginseng. By using degradome sequencing, we identified 79 conserved miRNA:target or tasiRNA:target interactions, of which eight were further confirmed with the RLM 5'-RACE experiments. More importantly, our results revealed that a member of miR156 family and one of its SPL target genes have inverse expression levels, which is tightly correlated with greater root biomass contents. These results not only contributes to overall understanding of post-transcriptional gene regulation in roots of P. notoginseng but also could serve as markers for breeding P. notoginseng with greater root yield.

  4. Photon Absorption Improvement in Reststrahlen Band of Mn1.56Co0.96- x Ni0.48Fe x O4 Series Films

    Science.gov (United States)

    Zhang, Xiaobo; Shi, Qin; Ren, Wei; Zhou, Qing; Lu, Hewei; Bao, Shuai; Wang, Lei; Bian, Liang; Xu, Jinbao; Chang, Aimin

    2017-08-01

    Mn1.56Co0.96- x Ni0.48Fe x O4 series films have been fabricated on SiO2/Si(100) substrates by chemical solution deposition and characterized by scanning electron microscopy, and their structural and mid-infrared (IR) properties investigated. The results indicate slight improvement in the microstructure and density of the films with increasing Fe content. The results of Raman spectroscopy showed variation in the local distortion and cation distribution at octahedral sites with elevated Fe content. The IR optical properties of the films were investigated at room temperature in the wavelength range from 1.5 μm to 25 μm. A strong absorption peak corresponding to Reststrahlen band located at 19.5 μm was observed and its absorption intensity found to improve with increasing Fe content in the films. The maximum absorption coefficient was calculated to be about 18,000 cm-1. The results bear technological significance for the design and fabrication of devices for IR detection applications.

  5. The 8-h tide in the mesosphere and lower thermosphere over Maui (20.75° N, 156.43° W

    Directory of Open Access Journals (Sweden)

    S. J. Franke

    2009-05-01

    Full Text Available Wind data collected by the Maui meteor radar (20.75° N, 156.43° W are used to study the 8-h tide in the mesosphere and lower thermosphere (MLT region at a low-latitude station. The data set spans the time interval from 19 May 2002 to 24 May 2007. Our results show that the 8-h tide is a regular and distinct feature over Maui. The meridional component of this wave is significantly larger than the zonal component. The meridional component exhibits a semiannual variation in amplitude, with peaks near the equinoxes, whereas the variation of the zonal component does not show this seasonal characteristic. The strongest wave motions mostly occur in the height range of 92–96 km near spring equinox (March and at higher altitudes near autumn equinox (October. The vertical variations of 8-h tidal phase at Maui indicate an upward wave energy flux. The vertical wavelengths are ≥54 km in equinox months.

  6. Lupic nephropathy: a case control study in Medellín, Colombia Nefropatía lúpica: estudio de 156 casos

    Directory of Open Access Journals (Sweden)

    Fernando Zambrano

    1989-03-01

    Full Text Available

    By means of a case-control study we analyzed the cllnlcal histories of 297 patients with systemic erythematous lupus, that were seen at the out-patient section of the Rheumatology Service, Hospital Universitario San Vicente de Paúl, in Medellín, Colombia, between 1970 and 1987. Renal involvement was documented in 156 (52.5% cases while in 94 (31.6% there were alterations in the urinary sediment without clinical evidence of renal lesions. Nephropathy was the first evidence of disease in 14 patients (4.70¡0 of the total group; in 48 of those with nephropathy proteinuria was in the nephrotic range; acute renal insufficiency was found in 19 patients (6.4% while in 15 (5.0% there was chronic renal insufficiency. Seventy nine renal biopsies were performed; their histological classification was as follows: mesangial glomerulonephritis 7 (8.9%; focal proliferative glomerulonephritis 17 (21.5%; diffuse proliferative glomerulonephritis 38 (48.1% and membranous glomerulonephrltls 9 (11.1 %. The frequency of the following clinical manifestations was significantly higher in patients with nephropathy: Iivido reticularis, vasculitis, oral ulcers, arthritis, thrombophlebitis, psychosis, headache and depression.

    Por medio de un estudio de casos y controles se analizaron las historias de 297 pacientes con lupus eritematoso sistémico, atendidos en la consulta externa del Servicio de Reumatología del Hospital Universitario San Vicente de Paúl, en Medellín, Colombia, entre 1970 y 1987. Se documentó compromiso renal en 156 (52.5%. Hubo 94 que presentaron alteraciones en el sedimento urinario sin evidencia clínica de lesión renal. La nefropatía como primera manifestación de la enfermedad se encontró en 14 pacientes (4.7% del grupo total; en 48 de los que tenían neuropatía (30.8% se halló la proteinuria en

  7. Multiple Genes Related to Muscle Identified through a Joint Analysis of a Two-stage Genome-wide Association Study for Racing Performance of 1,156 Thoroughbreds.

    Science.gov (United States)

    Shin, Dong-Hyun; Lee, Jin Woo; Park, Jong-Eun; Choi, Ik-Young; Oh, Hee-Seok; Kim, Hyeon Jeong; Kim, Heebal

    2015-06-01

    Thoroughbred, a relatively recent horse breed, is best known for its use in horse racing. Although myostatin (MSTN) variants have been reported to be highly associated with horse racing performance, the trait is more likely to be polygenic in nature. The purpose of this study was to identify genetic variants strongly associated with racing performance by using estimated breeding value (EBV) for race time as a phenotype. We conducted a two-stage genome-wide association study to search for genetic variants associated with the EBV. In the first stage of genome-wide association study, a relatively large number of markers (~54,000 single-nucleotide polymorphisms, SNPs) were evaluated in a small number of samples (240 horses). In the second stage, a relatively small number of markers identified to have large effects (170 SNPs) were evaluated in a much larger number of samples (1,156 horses). We also validated the SNPs related to MSTN known to have large effects on racing performance and found significant associations in the stage two analysis, but not in stage one. We identified 28 significant SNPs related to 17 genes. Among these, six genes have a function related to myogenesis and five genes are involved in muscle maintenance. To our knowledge, these genes are newly reported for the genetic association with racing performance of Thoroughbreds. It complements a recent horse genome-wide association studies of racing performance that identified other SNPs and genes as the most significant variants. These results will help to expand our knowledge of the polygenic nature of racing performance in Thoroughbreds.

  8. Multiple Genes Related to Muscle Identified through a Joint Analysis of a Two-stage Genome-wide Association Study for Racing Performance of 1,156 Thoroughbreds

    Directory of Open Access Journals (Sweden)

    Dong-Hyun Shin

    2015-06-01

    Full Text Available Thoroughbred, a relatively recent horse breed, is best known for its use in horse racing. Although myostatin (MSTN variants have been reported to be highly associated with horse racing performance, the trait is more likely to be polygenic in nature. The purpose of this study was to identify genetic variants strongly associated with racing performance by using estimated breeding value (EBV for race time as a phenotype. We conducted a two-stage genome-wide association study to search for genetic variants associated with the EBV. In the first stage of genome-wide association study, a relatively large number of markers (~54,000 single-nucleotide polymorphisms, SNPs were evaluated in a small number of samples (240 horses. In the second stage, a relatively small number of markers identified to have large effects (170 SNPs were evaluated in a much larger number of samples (1,156 horses. We also validated the SNPs related to MSTN known to have large effects on racing performance and found significant associations in the stage two analysis, but not in stage one. We identified 28 significant SNPs related to 17 genes. Among these, six genes have a function related to myogenesis and five genes are involved in muscle maintenance. To our knowledge, these genes are newly reported for the genetic association with racing performance of Thoroughbreds. It complements a recent horse genome-wide association studies of racing performance that identified other SNPs and genes as the most significant variants. These results will help to expand our knowledge of the polygenic nature of racing performance in Thoroughbreds.

  9. Mn(2+)-Ion Site Distribution of Zeolite Y (FAU, Si/Al = 1.56) Depending on the Ion-Exchange Ratio.

    Science.gov (United States)

    Seo, Sung Man; Moon, Dae Jun; Suh, Jeong Min; Zhu, John; Lim, Woo Taik

    2016-05-01

    To investigate the tendency of Mn(2+)-ion exchange into zeolite Y, four single crystals of fully dehydrated Mn2+, Na(+)-exchanged zeolite Y (Si/Al = 1.56) were prepared by the exchange of Na75-Y (INa75I[Si117Al75,O384]-FAU) with aqueous of various concentrations by Mn2+ and Na+ in a total 0.05 M for molar ratios of 1:1 (crystal 1), 1:25 (crystal 2), 1:50 (crystal 3), and 1:100 (crystal 4), respectively, followed by vacuum dehydration at 400 degrees C. Their single-crystal structures were determined by synchrotron X-ray diffraction techniques in the cubic space group Fd3(-)m and were refined to the final error indices R1/wR2 = 0.0440/0.1545, 0.0369/0.1153, 0.0373/0.1091, and 0.0506/0.1667, respectively. Their unit-cell formulas are approximately LMn33.5Na8I[Si117Al75O384]-FAU, IMn20.5Na34I[Si117Al75O384]-FAU, IMn20.5Na34I[Si117Al75O384]-FAU, and IMn16.5Na42I[Si117Al75O384]-FAU, respectively. The degree of Mn2+-ion exchange increases from 44.3% to 89.1% with increasing the initial Mn2+ concentrations as Na+ content and the unit cell constant of the zeolite framework decrease.

  10. An evaluation of therapeutic and reactivating effects of newly developed oximes (K156, K203) and commonly used oximes (obidoxime, trimedoxime, HI-6) in tabun-poisoned rats and mice.

    Science.gov (United States)

    Kassa, Jiri; Karasova, Jana; Musilek, Kamil; Kuca, Kamil

    2008-01-20

    The potency of newly developed monoxime bispyridinium compounds (K156, K203) in reactivating tabun-inhibited acetylcholinesterase and reducing tabun-induced lethal toxic effects was compared with commonly used oximes (obidoxime, trimedoxime, the oxime HI-6) using in vivo methods. Studies determining percentage of reactivation of tabun-inhibited blood and tissue acetylcholinesterase in poisoned rats showed that the reactivating efficacy of newly developed oxime K203 is comparable with obidoxime and trimedoxime in blood and higher than the reactivating potency of trimedoxime and obidoxime in diaphragm and brain, where the difference in reactivating efficacy of obidoxime, trimedoxime and K203 is significant. On the other hand, the potency of newly developed K156 to reactivate tabun-inhibited acetylcholinesterase is comparable with obidoxime or trimedoxime in diaphragm and brain. It is significantly lower than the reactivating efficacy of trimedoxime and obidoxime in blood. Moreover, both newly developed oximes were found to be relatively efficacious in the reduction of lethal toxic effects in tabun-poisoned mice. Especially, the oxime K203 is able to decrease the acute toxicity of tabun nearly two times. The therapeutic efficacy of K156 and K203 corresponds to their potency to reactivate tabun-inhibited acetylcholinesterase, especially in diaphragm and brain. In contrast to obidoxime and trimedoxime, the oxime HI-6 is not effective in reactivation of tabun-inhibited acetycholinesterase and in reducing tabun lethality. While the oxime K156 does not improve the reactivating and therapeutic effectiveness of currently available obidoxime and trimedoxime, the newly developed oxime K203 is markedly more effective in reactivation of tabun-inhibited acetylcholinesterase in rats, especially in brain, and in reducing lethal toxic effects of tabun in mice and, therefore, it is suitable for the replacement of commonly used oximes for the antidotal treatment of acute tabun

  11. 各种氮源物质对阿维链霉菌GB-156发酵生产阿维菌素的影响%The Analysis of the Effect of Different Nitrogen Sources on the Yield of Avermectins of the GB- 156 Strain of Streptomyces Avermitilis

    Institute of Scientific and Technical Information of China (English)

    毕然

    2006-01-01

    以阿维链霉菌GB-156突变菌株,研究了各种有机和无机氮源物质对阿维菌素生物合成的影响作用.实验结果表明,花生蛋白粉为最有利于阿维菌素发酵生产的有机氮源,在发酵培养基中添加花生蛋白粉和花生饼粉使阿维菌素B1产量分别提高了334.7%和308.9%;而(NH4)2SO4作为有效的无机氮源,在1.0%的添加浓度下,可以提高阿维菌素B1和阿维菌素总产量的水平,并且得到了较为适合的阿维菌素生产用氮源优化发酵培养基,其组成为可溶性淀粉7%,花生蛋白粉1%,(NH4)2SO4 0.1%,MnSO4·7H2O 0.5%,KCl 0.4%,CaCO30.2%,CoCl2·6H2O微量,pH 7.0~7.2.

  12. Analysis on Effect of NB - UVB Combined with Tripterygium Glycoside on 156 Patients with Hand Eczema Treated%窄谱中波紫外线联合雷公藤片治疗156例手部湿疹疗效观察

    Institute of Scientific and Technical Information of China (English)

    戴向农; 王立新; 徐丽华; 叶兴东; 李振洁; 肖常青; 黄茂芳; 朱慧兰

    2009-01-01

    目的:观察窄谱中波紫外线(NB-UVB)与雷公藤片联合治疗手部湿疹的疗效及不良反应.方法:采用开放对照研究方法,将156例患者分为A、B两组.A组80人给予雷公藤片,B组76人给予NB-UVB皮损照射+口服雷公藤片治疗,疗程4周.结果:治疗结束时与治疗前比较,A组患者瘙痒、皮损、部位的积分和总积分分别下降70%、73.1%、70.5%和71%;而B组下降87.1%、91.7%、88.3%和89.1%.治疗前后组内比较及治疗后组间比较,其平均积分差异均有统计学意义(P<0.05).治疗过程中未见NB-UVB局部照射的不良反应,雷公藤片口服组主要副作用是:5%患者血白细胞减少、5%女性月经量减少,3.8%患者AST一过性升高,但都为自限性.结论:NB-UVB照射联合雷公藤片治疗手部湿疹可以提高疗效、缩短疗程、安全性好,值得临床选用.

  13. Congenital sideroblastic anemia—a new family with identification of K156E mutation of ALAS2 gene and literature review%一个遗性铁粒幼细胞贫血家系ALAS2基因K156E突变报道并文献复习

    Institute of Scientific and Technical Information of China (English)

    崔蕊; 徐泽锋; 秦铁军; 张悦; 肖志坚

    2014-01-01

    目的 报告一个遗传性铁粒幼细胞贫血(CSA)家系并进行文献复习,以提高对CSA发病机制及其治疗的认识.方法 检测先证者及其家族成员外周血血常规及铁代谢相关指标;应用基因组-DNA PCR技术扩增先证者及其家族成员δ-氨基γ酮戊酸合成酶2(ALAS2)基因第1~11号外显子,应用直接测序法检测外显子突变状态,采用T载体连接测序鉴定其突变类型.结果 先证者血常规检查示小细胞低色素性贫血(血红蛋白84 g/L、红细胞平均体积64 f1、红细胞平均血红蛋白含量16.5 pg),血清铁44.7 μmol/L、血清铁蛋白3 123 μg/L,转铁蛋白饱和度0.84.基因分析显示先证者与先证者母亲、胞妹及侄女ALAS2基因第5号外显子466碱基A>G杂合突变,引起156位氨基酸由赖氨酸转变为谷氨酸.家系成员分析示该家系为X-连锁铁粒幼细胞贫血(XLSA),男性ALAS2基因突变半合子发病,女性该基因突变携带者均无贫血表现,仅有红细胞分布宽度的异常.先证者接受持续1年的维生素B6联合去铁治疗,血红蛋白升至98 g/L,血清铁蛋白降至l 580 μg/L.结论 该家系为中国一新发现的XLSA家系,ALAS2基因K156E突变为其致病基因;CSA的诊断有赖于相关基因突变分析,维生素B6是CSA的首选治疗药物.%Objective To raise awareness of molecular pathogenesis and treatment of congential sideroblastic anemia (CSA).Methods A complete blood count and iron metabolism were detected from the proband and other members of the family.Mutation analysis was performed on the complete coding regions of ALAS2 gene by common polymerase chain reaction (PCR) using genomic DNA as a template from memebers the family.ALAS2 mutations were detected by direct sequencing and mutation types were confirmed by sequencing followed by plasmid cloning.Results The proband male presented with microcytic hypochromic anemia (hemoglobin 84 g/L,mean corpuscular volume 64 fL,mean corpuscular

  14. Synthesis and characterization of Bi{sub 1.56}Sb{sub 1.48}Co{sub 0.96}O{sub 7} pyrochlore sun-light-responsive photocatalyst

    Energy Technology Data Exchange (ETDEWEB)

    Naceur, Benhadria, E-mail: nacer1974@yahoo.fr [Laboratory of Inorganic Materials Chemistry and Application, Department of Materials Engineering, University of Science and Technology of Oran (USTO M.B), BP 1505, El M’naouar, 31000 Oran (Algeria); Abdelkader, Elaziouti, E-mail: elaziouti_a@yahoo.com [Laboratory of Inorganic Materials Chemistry and Application, Department of Materials Engineering, University of Science and Technology of Oran (USTO M.B), BP 1505, El M’naouar, 31000 Oran (Algeria); Dr Moulay Tahar University, Saida (Algeria); Nadjia, Laouedj, E-mail: nlaouedj@yahoo.fr [Laboratory of Inorganic Materials Chemistry and Application, Department of Materials Engineering, University of Science and Technology of Oran (USTO M.B), BP 1505, El M’naouar, 31000 Oran (Algeria); Dr Moulay Tahar University, Saida (Algeria); Sellami, Mayouf, E-mail: Mourad7dz@yahoo.fr [Laboratory of Inorganic Materials Chemistry and Application, Department of Materials Engineering, University of Science and Technology of Oran (USTO M.B), BP 1505, El M’naouar, 31000 Oran (Algeria); Noureddine, Bettahar, E-mail: nbettahar2001@yahoo.fr [Laboratory of Inorganic Materials Chemistry and Application, Department of Materials Engineering, University of Science and Technology of Oran (USTO M.B), BP 1505, El M’naouar, 31000 Oran (Algeria)

    2016-02-15

    Graphical abstract: Heterogeneous photo Fenton process with dye sensitized mechanism of RhB by Bi{sub 1.56}Sb{sub 1.48}Co{sub 0.96}O{sub 7} compound. - Highlights: • Bi{sub 1.56}Sb{sub 1.48}Co{sub 0.96}O{sub 7} (BSCO) catalyst was synthesized by improved solid state reaction method. • BSCO/H{sub 2}O{sub 2}/UVA and BSCO/H{sub 2}O{sub 2}/SL catalyst systems exhibit excellent photocatalytic activities for rhodamine B. • The photocatalytic degradation was preceded via heterogeneous photo Fenton mechanism process. • ·OH radicals are the main reactive species for the degradation of RhB. - Abstract: Novel nanostructure pyrochlore Bi{sub 1.56}Sb{sub 1.48}Co{sub 0.96}O{sub 7} was successfully synthesized via solid state reaction method in air. The as-synthesized photocatalyst was characterized by X-ray diffraction, Scanning electron microscopy and UV–vis diffuse reflectance spectroscopy techniques. The results showed that the BSCO was crystallized with the pyrochlore-type structure, cubic crystal system and space group Fd3m. The average particle size and band gap for BSCO were D = 76.29 nm and E{sub g} = 1.50 eV respectively. Under the optimum conditions for discoloration of the dye: initial concentration of 20 mg L{sup −1} RhB, pH 7, 25 °C, 0.5 mL H{sub 2}O{sub 2} and BSCO/dye mass ration of 1 g L{sup −1}, 97.77 and 90.16% of RhB were removed with BSCO/H{sub 2}O{sub 2} photocatalytic system within 60 min of irradiation time under UVA- and SL irradiations respectively. Pseudo-second-order kinetic model gave the best fit, with highest correlation coefficients (R{sup 2} ≥ 0.99). On the base of these results, the mechanism of the enhancement of the discoloration efficiency was discussed. .

  15. 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.

  16. 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.

  17. 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.

  18. 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.)

  19. 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...

  20. 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.

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. Altered Activities of Cysteine Desulfurase Variants H104Q, E156Q, D180G,Q183E and K206A Caused by Changes in Pyridoxal Phosphate Binding%半胱氨酸脱硫酶突变体H104Q,E156Q,D180G,Q183E和K206A通过改变对磷酸吡哆醛的结合影响酶活性

    Institute of Scientific and Technical Information of China (English)

    张婷; 李唐; 赵津; 谭国强

    2015-01-01

    大肠杆菌半胱氨酸脱硫酶(cysteine desulfurase,IscS)是一类依赖磷酸吡哆醛(pyridoxal phosphate,PLP)的同质二聚体的酶.IscS能催化游离底物L-半胱氨酸脱硫,生成L-丙氨酸和单质硫.在此催化过程中,可形成与酶结合的半胱氨酸过硫化物中间物,并出现了7种具有不同特征性吸收峰的中间反应物.为了研究PLP的结合及中间反应物的形成及累积,对IscS中与PLP结合相关,及IscS半胱氨酸活性口袋中特定氨基酸残基位点(His104,Glu156,Asp180,Gln183和Lys206)进行定点突变,结果发现:1)IscS突变体H104Q、D180G、Q183E、K206A对PLP的结合能力具有不同程度的减弱,酶的活性明显降低甚至消失,PLP与蛋白结合的特异吸收峰消失,或发生明显偏移并出现新的吸收峰,且这些新出现的吸收峰又与蛋白形成的各种中间反应物的吸收峰一致;2)IscS突变体E156Q的活性增高,PLP与蛋白结合的吸收峰明显增加.这些结果都表明,IscS氨基酸残基可通过影响PLP的结合及质子转移引起催化过程中不同中间反应物的形成及累积,同时提高或降低蛋白的活性.

  7. 156 EAST AFRICAN MEDICAL JOURNAL April2007

    African Journals Online (AJOL)

    2007-04-04

    Apr 4, 2007 ... France, Spain, Israel and Taiwan (14—18) causing a growing therapeutic ... Sample size: This was limited to the 78 patients due to the number of ... Isolates exhibiting resistance to three drug classes or more were defined.

  8. 34 CFR 300.156 - Personnel qualifications.

    Science.gov (United States)

    2010-07-01

    ... education teacher in the State who teaches in an elementary school, middle school, or secondary school is... comparable requirements that apply to the professional discipline in which those personnel are providing... in their discipline or profession— (i) Meet the requirements of paragraph (b)(1) of this section;...

  9. 40 CFR 156.10 - Labeling requirements.

    Science.gov (United States)

    2010-07-01

    ... pest. (vi) The method of application, including instructions for dilution, if required, and type(s) of... phrase as “when used as directed”; and (x) Non-numerical and/or comparative statements on the safety of... formulators on the composition, toxicity, methods of use, applicable restrictions or limitations,...

  10. 15.6.Nephrolithiasis and obstructive nephropathy

    Institute of Scientific and Technical Information of China (English)

    1992-01-01

    920362 Vesicoureteral reflux and refluxnephropathy in adults.LI Youji (李幼姬),et al.Renal Instit,1st Hosp,Zhongshan Med Univ.ChinJ Nephrol 1991;7(6):341-344.Chronic recurent non-obstructive urinary tract

  11. BDML Metadata: 156 [SSBD[Archive

    Lifescience Database Archive (English)

    Full Text Available Ce_KK_P002 BDML file for quantitative information about nuclear division dynamics o...f R08D7.1(RNAi) embryo quantitative information about nuclear division dynamics in R08D7.1(RNAi) embryo C. e

  12. 32 CFR 156.3 - Policy.

    Science.gov (United States)

    2010-07-01

    ... Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY DEPARTMENT OF DEFENSE PERSONNEL SECURITY... interests of national security. (b) A personnel security clearance shall be granted and assignment to sensitive duties shall be authorized only to U.S. citizens. As an exception, a non-U.S. citizen may, by...

  13. 18 CFR 156.5 - Exhibits.

    Science.gov (United States)

    2010-04-01

    ... distribution systems of Applicant and the transmission pipeline system of the proposed supplier (respondent... by applicant between distribution facilities of applicant and the transmission pipeline system of the... pipeline supplier (respondent) main line industrial customers, gas pipeline or distribution...

  14. 7 CFR 3560.156 - Lease requirements.

    Science.gov (United States)

    2010-01-01

    ... requirement that tenants make restitution when unauthorized assistance is received due to applicant or tenant... requirements established under § 3560.152. (14) Leases for tenants living in Plan II interest credit rental...

  15. 21 CFR 156.3 - Definitions.

    Science.gov (United States)

    2010-04-01

    ...) Strength and redness of color means at least as much red as obtained by comparison of the prepared product... discs of equal diameter, or the color equivalent of such discs: Disc 1—Red (5R 2.6/13) (glossy finish... determining the color of tomato juice. Such meters shall be calibrated to indicate that the color of...

  16. Reference: 156 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available dopsis thaliana . We demonstrate that loss of DEL1 function resulted in increased ploidy levels, whereas ectopic...nics. DEL1 inhibited the endoreduplication phenotype, but not the ectopic cell divisions that resulted from

  17. 156 EAST AFRICAN MEDICAL JOURNAL April2007

    African Journals Online (AJOL)

    Setting: Maternal Child Health Clinic (MCH) at Moi Teaching and Referral Hospital (MTRH) in ... Recommendation: Similar studies should be conducted in other parts of Kenya in order to .... For the assessment of overcrowding three family size.

  18. 29 CFR 1910.156 - Fire brigades.

    Science.gov (United States)

    2010-07-01

    ... brigade; the basic organizational structure; the type, amount, and frequency of training to be provided to... fire and other emergencies. The fire brigade members shall also be advised of any changes that occur in..., and shall provide protection against penetration of the midsole by a size 8D common nail when at...

  19. Environmental Radiation Data (ERD) Journal Report 156

    Science.gov (United States)

    RadNet environmental radiation monitoring data report for the period of October - December 2013. The report includes results for air, drinking water, precipitation and milk samples collected as part of EPA's RadNet monitoring program.

  20. Prevention and control of rabies under surveillance mechanism:An analysis of aggressive dog-attack incidents%156起一犬伤多人事件监测及处置效果分析

    Institute of Scientific and Technical Information of China (English)

    胡秋凌; 胡海梅; 高丽芬; 罗琼梅; 吴学林; 钱发宝

    2016-01-01

    目的:探索一犬伤多人事件的监测及处置机制,为进一步做好狂犬病防控研究提供科学依据.方法:建立楚雄州一犬伤多人事件监测机制,采用描述性流行病学方法对监测资料进行分析.结果:楚雄州4年共监测到156起一犬伤多人事件、549名暴露人员,所有暴露人员随访至今无狂犬病病例报告,肇事犬犬脑标本采集率47.43%,犬脑标本狂犬病病毒阳性率为89.19%.结论:犬间疫情的监测和及时处置是减少和消除人间狂犬病的关键环节,一犬伤多人事件监测机制是楚雄州乃至云南省狂犬病防控的重要策略.

  1. 3156例生殖异常患者的染色体核型异常分析%Analysis of chromosome abnormities in 3 156 patients with reproduction abnormalities

    Institute of Scientific and Technical Information of China (English)

    陈春; 李运星; 秦胜芳; 魏萍; 曾兰; 邓艺; 伍志灵; 叶梦玲

    2015-01-01

    目的:探讨生殖异常与染色体异常的关系。方法回顾性分析2008年8月至2014年8月四川省妇幼保健院就诊的3156例生殖异常患者的染色体核型及临床资料。结果 3156例生殖异常患者中,检出染色体异常核型82例,核型异常率为2.6%。其中非同源染色体平衡易位30例(36.59%)、性染色体数目异常28例(34.15%)、罗伯逊易位12例(14.63%)、其他染色体异常12例(14.63%)。从临床表现看,妊娠胎儿丢失患者、不孕不育患者、胎儿畸形及出生缺陷患者染色体异常率分别为3.26%(53/1625)、2.02%(25/1235)、1.35%(4/296)。结论生殖异常与染色体异常有关,对生殖异常患者进行染色体检查是必要的。%Objective To discuss the relationship between reproduction abnormality and chromosome abnormity .Methods Chromosome karyotypes and clinical data of 3 156 patients with reproduction abnormalities in Sichuan Provincial Maternity and Child Health Hospital from Aug 2008 to Aug 2014 were retrospectively analyzed .Results Among the 3 156 patients with reproduction abnormalities ,82 cases of abnormal karyotypes were detected , The incidence rate of chromosomal abnormity was 2.6%, 30 cases (36.59%) were the balance of autosomal translocation , 28 cases (34.15%) were sex chromosome aneuploidy , 12 cases (14.63%) were robertsonian translocation , 12 cases ( 14.63%) were other chromosome abnormities .As to the clinical manifestations , the chromosomal abnormity rate of miscarriage , infertility, fetal malformation and birth defect were 3.26% (53/1 625), 2.02% (25/1 235), 1.35% (4/296) respectively.Conclusion Reproductive abnormalities are associated with chromosome abnormities .It is necessary for patients with reproductive abnormalities to take chromosome examination .

  2. Effect of pressure and high magnetic field on phase transitions and magnetic properties of Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52} and Ni{sub 2}MnSn Heusler compounds

    Energy Technology Data Exchange (ETDEWEB)

    Kaštil, J., E-mail: kastil@fzu.cz [Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21 Prague 8 (Czech Republic); Kamarád, J. [Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21 Prague 8 (Czech Republic); Isnard, O. [Univ. Grenoble Alpes, Inst NEEL, F-38042 Grenoble (France); CNRS, Inst NEEL, F-38042 Grenoble (France); Skourski, Y. [Hochfeld-Magnetlabor Dresden (HLD), HZ Dresden-Rossendorf, D-01314 Dresden (Germany); Míšek, M.; Arnold, Z. [Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21 Prague 8 (Czech Republic)

    2015-11-25

    Complex study of magnetic, magnetocaloric and structural properties of the Ni{sub 2}MnSn and Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52} compounds was performed. The stoichiometric single-crystal of Ni{sub 2}MnSn was prepared by Czochralski method. The remarkable pressure effect on the martensitic magnetization and the martensite-austenite transition temperature T{sub M–A} was observed in the Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52} compound. The coefficient dT{sub M–A}/dp reached value of 18 K/GPa. The already low value of martensite magnetization of Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52} was further substantially decreased by external pressure, in contrast with pressure almost insensitive magnetization of the stoichiometric Ni{sub 2}MnSn single-crystal. The pulse magnetic field of 58 T invoked the structural transition at temperature 180 K that is of about 100 K below T{sub M–A} of Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52} at zero field. An anomalous increase of resistivity of the compound has been observed at temperature range below T{sub M–A}, however, it does not copy the sharp change of magnetization at T{sub M–A}. The obtained results indicate the important role of interatomic distances on the magnetic ordering and electronic structure of the studied Heusler alloys and are in agreement with the Jahn-Teller mechanism of the martensitic transition in these compounds. - Highlights: • Samples of Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52} and single crystal of Ni{sub 2}MnSn compounds were prepared. • Significant decrease of magnetization of Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52} by pressure, dlnM/dp = −18.7·10{sup −3}GPa{sup −1}. • Negligible pressure effect on magnetization of the Ni{sub 2}MnSn single-crystal. • Large increase of T{sub M–A} under pressure, dT{sub M–A}/dp = 18 K/GPa in the Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52}. • High magnetoresistance and moderate MCE were measured on Ni{sub 1.92}Mn{sub 1.56}Sn{sub 0.52}.

  3. 中西医结合治疗百日咳综合征临床研究%Clinical Observation of Chinese Medicine Integrated with Western Medicine Treatment on 156 Cases of Whooping Cough Syndrome

    Institute of Scientific and Technical Information of China (English)

    陈慧; 程燕

    2015-01-01

    目的 观察中西医结合治疗儿童百日咳综合征的临床疗效,并寻找卫生经济学效益最佳的治疗方案.方法 156例患儿随机分为西医组(序贯使用阿奇霉素)、西药+中药口服组(口服阿奇霉素或利巴韦林和中药)、西药+中药贴治组(口服阿奇霉素或利巴韦林和中药贴治)各52例,第1疗程5d后停4d,第2疗程3d后停4d,观察各组临床疗效、进行成本-效果分析.结果 西药+中药口服组总有效率为94.23%,西药+中药贴治组92.31%,西医组96.15%,组间差异无统计学意义(P>0.05),但是中西医结合方法能明显缩短患儿痉咳期的时间,缓解患儿痛楚,并在卫生经济学效益上较西医组有一定优势,更加经济节约.而西药组+中药口服组与西药组+中药贴治组之间差异无统计学意义(P>0.05).结论 中西医结合方法治疗儿童百日咳综合征在缩短病程、方便舒适、成本-效果比等方面较单纯使用西医治疗具有一定优势.

  4. Clinical Observation on Chinese Medicine Integrated with Western Medicine Treatment of 156 Cases of Whooping Cough Syndrome%中西医结合治疗百日咳综合征临床观察

    Institute of Scientific and Technical Information of China (English)

    陈慧; 程燕

    2015-01-01

    目的 观察中西医结合治疗儿童百日咳综合征的临床疗效.方法 将156例百日咳患儿随机分为西医组(序贯使用阿奇霉素或抗病毒药)、西药+中药口服组(口服阿奇霉素和中药)、西药+中药贴治组(口服阿奇霉素和中药贴治)各52例,第1疗程5d后停4d,第2疗程3d后停4d,观察各组临床疗效,进行成本-效果分析.结果 西药+中药口服组总有效率为94.23%,西药+中药贴治组92.31%,西医组96.15%,3者比较无统计学意义(P>0.05),但是中西医结合方法能明显缩短患儿痉咳期的时间,缓解患儿痛楚,并在卫生经济学效益上较西医组有一定优势,更加经济节约.而西药组+中药口服组与西药组+中药贴治组之间在缩短患儿痉咳期的时间和成本方面差异不明显(P>0.05).结论 中西医结合方法治疗儿童百日咳综合征在缩短病程、方便舒适、成本-效果比等方面较单纯使用西医治疗具有一定优势.

  5. Slab-derived adakites and subslab asthenosphere-derived OIB-type rocks at 156 ± 2 Ma from the north of Gerze, central Tibet: Records of the Bangong-Nujiang oceanic ridge subduction during the Late Jurassic

    Science.gov (United States)

    Li, Shi-Min; Zhu, Di-Cheng; Wang, Qing; Zhao, Zhidan; Zhang, Liang-Liang; Liu, Sheng-Ao; Chang, Qing-Song; Lu, Ying-Huai; Dai, Jin-Gen; Zheng, Yuan-Chuan

    2016-10-01

    of the Bangong-Nujiang suture zones (BNSZ) records the northward ridge subduction of the Tethyan Bangong-Nujiang Ocean at ca. 156 ± 2 Ma.

  6. 156例休克型异位妊娠的腹腔镜手术临床分析%Laparoscopic treatment for patients with hypovolemic shock due to ectopic pregnancy

    Institute of Scientific and Technical Information of China (English)

    罗丽莉; 左绪磊; 胡瑞霞

    2003-01-01

    目的探讨腹腔镜手术治疗休克型异位妊娠的可行性与安全性.方法收集自1999年1月~2003年1月4年间在我院腹腔镜手术治疗的异位妊娠病例156例的临床资料.其中有休克症状的15例(包括输卵管妊娠13例、卵巢妊娠1例、大网膜妊娠1例)为研究组,其余141例为对照组,比较两组患者围手术期情况.结果所有病例手术顺利,无中转开腹和并发症发生.研究组和对照组腹腔内出血量分别为(1 660±528)ml和(155±132)mi,两组比较有极显著性差异(P<0.01).研究组输血量为(710±342)ml,而对照组均无输血.研究组和对照组手术时间分别为(65±23)min和(58±25)min,两组比较无显著性差异(P>0.05).研究组和对照组术后住院时间分别为(3.2±0.9)d和(2.5±0.7)d,两组比较无显著性差异(P>0.05).结论只要术者具备熟练的腹腔镜手术操作技巧,加上理想的麻醉和先进的心电监护,腹腔镜手术治疗休克型异位妊娠是安全有效的.

  7. 贵港地区13156例女性宫颈人乳头瘤病毒型别分析%Analysis on type distribution of cervical human papilloma virus in 13 156 women in Guigang area

    Institute of Scientific and Technical Information of China (English)

    程卫萍

    2015-01-01

    Objective To analyze distribution of human papilloma virus(HPV) subtypes in women infected by HPV in Guigang area ,and to determine the dominant type in this region .Methods 21 genital HPV genotypes were screened in 13 156 women in out‐patient clinic in Guigang area from July 2013 to July 2014 by using rapid flow‐through hybridization technique of nucleic acid mole‐cules ,and high‐risk HPV detection and typing was carried out for screening cervical cancer .Results A total of 4 682 HPV‐positive women were identified and the infection rate was 35 .59% .All of 21 genetypes were checked out ,dominated by single infection .The percentages of HPV genotypes from high to low was HPV‐52 (16 .28% ) ,HPV‐16 (14 .01% ) ,HPV‐58 (8 .48% ) ,HPV8304 (7 .58% ) ,HPV‐6(6 .79% )and HPV‐11(5 .72% ) .Conclusion The dominant genetype of HPV of women in this area is HPV‐52 .%目的:分析贵港地区女性人乳头瘤病毒(HPV)感染亚型的分布情况,确定该地区的优势型别。方法采用核酸分子快速导流杂交分型技术对2013年7月至2014年7月在贵港地区妇产科门诊就诊的13156例女性进行生殖道21种HPV基因型的筛查,并进行高危 HPV检测及分型来筛查宫颈癌。结果共检出HPV阳性4682例,感染率35.59%;21种基因型全部检出,以单一型感染为主,HPV基因型检出由高到低依次为:HPV‐52(16.28%)、HPV‐16(14.01%)、HPV‐58(8.48%)、HPV8304(7.58%)、HPV‐6(6.79%)、HPV‐11(5.72%)。结论该地区女性感染 HPV的主要型别为 HPV‐52。

  8. 无粘弹剂小切口白内障摘除加人工晶体植入术156例临床疗效观察%Effect of no viscoelastic small incision cataract extraction plus intraocular lens implantation

    Institute of Scientific and Technical Information of China (English)

    庞永明; 尼亚美

    2011-01-01

    Objective To evaluate non-viscoelastic small incision extracapsular cataract extraction plus intraocular lens implantation in cataract surgery on Africans. Methods 156 cases (156 eyes) black cataract patients without viscoelastic were treated with small incision extracapsular cataract extraction plus intraocular lens implantation. Results The visual acuity≥0. 3 after 1 week were 71. 8% (112). The visual acuity ≥1. 0 accounted for 11. 5% (18). The visual acuity ≥0. 3 after 3 months accounted for 93. 6% (146). The visual acuity ≥1. 0 was 15. 4% (24). Conclusion It is effective to treated African cataract with non-viscoelastic small incision extracapsular cataract extraction plus intraocular lens implantation.%目的 探讨无粘弹剂小切口白内障囊外摘除加人工晶体植入术在治疗非洲黑人白内障的临床疗效.方法 对156例(156眼)黑人白内障患者行无粘弹剂小切口白内障囊外摘除加人工晶体植入术,并评估疗效.结果 术后1周视力≥0.3者占71.8%(112眼),视力≥1.0者占11.5%(18眼).3个月后视力≥0.3者占93.6%(146眼),视力≥1.0者占15.4%(24眼).结论 无粘弹剂小切口白内障囊外摘除及人工晶体植入术损伤小,术后视力恢复好.在非洲地区有推广应用价值.

  9. The intervention effect of family doctor mode on community patients with metabolic syndrome%家庭医生模式对社区代谢综合征156例干预效果的影响

    Institute of Scientific and Technical Information of China (English)

    陈洁; 霍敏俐; 黎凤鸣

    2015-01-01

    ObjectiveTo explore the intervention effect of family doctor mode on community patients with metabolic syndrome (MS).Methods312 cases of patients with metabolic syndrome in community as the research object,were randomly divided into the observation group and the control group,The control group underwent individualized drug therapy,the observation group in the control group on the basis of using the family physician model to implement tracking observation,observed the changes of blood glucose,blood lipid,body mass and others in two groups after intervene 1 year,evaluation of patient the awareness rate of the disease.ResultsIn ob-servation group,received nursing intervention for 1 years after BMI,HbAlC,fasting blood glucose,insulin resistance index,TC were significantly lower than control group,difference was statistical significant (P <0.05).Awareness rate after the intervention in obser-vation group of 94.87% was significantly higher than that of control group 79.49%,differences were statistically significant (P <0.05).ConclusionFamily doctor nursing mode can improve blood glucose,blood lipid control rate of community MS patients,is bene-ficial for patients to improve the knowledge on the relative disease awareness.%目的:探讨家庭医生模式对社区代谢综合征(MS)干预效果的影响。方法:选取312例社区代谢综合征患者作为研究对象,采用数字随机法将患者分为对照组和观察组各156例。对照组行个体化药物治疗,观察组在对照组基础上采用家庭医生模式实施全程跟踪观察,观察干预1年后两组血糖、血脂、体质量等的变化,评估患者对疾病的知晓率。结果:观察组干预1年后 BMI、HbAlC、空腹血糖、胰岛素抵抗指数、TC 均明显低于对照组,差异具有统计学意义(P <0.05);观察组干预后知晓率为94.87%显著高于对照组79.49%,差异具有统计学意义(P <0.05)。结论:家庭医

  10. Workers with Family Responsibilities Convention (ILO No. 156).

    Science.gov (United States)

    1989-01-01

    The government of France ratified this UN Convention on Workers with Family Responsibilities on March 16, 1989; the government of Uruguay ratified it on November 16, 1989; and the government of the Yemen Arab Republic ratified it on March 13, 1989.

  11. Dicty_cDB: SSF156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available VSWLIIS*rmmc*kkstn*rynstrrsq*ttttnfnwskll*ikxk knlknlkkkkkkrnyqyiyinnfriisiffrk T...VLKKXXILKKQHVSWLIIS*rmmc*kkstn*rynstrrsq*ttttnfnwskll*ikxk knlknlkkkkkkrnyqyiyinnfriisiffrk Homology vs CSM-

  12. 42 CFR 483.156 - Registry of nurse aides.

    Science.gov (United States)

    2010-10-01

    ... That Must Be Met by States and State Agencies: Nurse Aide Training and Competency Evaluation, and Paid... home health aides who have successfully completed a home health aide competency evaluation program... any response to an inquiry that includes a finding of abuse, neglect, or misappropriation of...

  13. 7 CFR 989.156 - Raisin diversion program.

    Science.gov (United States)

    2010-01-01

    ... the vines, spur-prune the vines, remove the bunches or take other means to preclude grapes from being... next diversion program. For spur-pruned vines, this date may be extended 2 weeks from the date of the inspection of a producer's vineyard if more than 4 bunches on spur-pruned vines are present at the time...

  14. Glacial Features (Point) - Quad 156 (DOVER EAST, NH-ME)

    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,...

  15. Dicty_cDB: SHD156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 78 4e-45 6 CZ289188 |CZ289188.1 cp62f05.f Candida parapsilosis Random Genomic Library Candida parapsilosis ...64.1 C.albicans EFT2 gene. 78 2e-44 6 CZ282959 |CZ282959.1 cp27c04.f Candida parapsilosis Random Genomic Library Candida parapsilos...1 |AF107291.1 Candida parapsilosis elongation factor 2 (EFT2) gene, partial cds. 72 1e-41 7 AY497652 |AY497652.1 Candida parapsilos

  16. 40 CFR 417.156 - Pretreatment standards for new sources.

    Science.gov (United States)

    2010-07-01

    ... GUIDELINES AND STANDARDS SOAP AND DETERGENT MANUFACTURING POINT SOURCE CATEGORY Manufacture of Spray Dried... subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply... publicly owned treatment works by a new source subject to the provisions of this subpart. (a) There shall...

  17. Dicty_cDB: CHC156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available cds. 56 1e-26 5 BD183626 |BD183626.1 Material for diagnosing malaria and immune antigen for suppressing growth of plasmodium... and immune antigen for suppressing growth of plasmodium. 58 8e-19 6 U00152 |U00152.1 Plasmodium falciparum

  18. Dicty_cDB: CHB156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available st: 0 Number of HSP's gapped (non-prelim): 0 length of query: 112 length of database: 80,480,566 effective HSP length: 17 effective... length of query: 95 effective length of database: 78,821,179 effective search space: 7488012005 effective...ngth of database: Z,592,795,642 effective HSP length: 21 effective length of query: 91 effective length of d...atabase: Y,784,453,163 effective search space: 3802385237833 effective search space used: 3802385237833 T: 0

  19. 33 CFR 156.113 - Compliance with suspension order.

    Science.gov (United States)

    2010-07-01

    ... under the procedure contained in paragraph (b) of this section may appeal that ruling in writing, except... delay in presenting a written appeal under paragraph (c) of this section would have a significant... facility operator may request reconsideration of the suspension order either orally or in writing to the...

  20. Dicty_cDB: CHA156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available stica cDNA clone ABCA005552, mRNA sequence. 72 2e-08 1 CN883223 |CN883223.1 010813AASB004877HT (AASB) Royal ...Gala 10 DAFB fruit Malus x domestica cDNA clone AASB004877, mRNA sequence. 72 2e-08 1 CV150833 |CV150833.1 M

  1. Dicty_cDB: CHD156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available of HSP's gapped (non-prelim): 0 length of query: 128 length of database: 80,480,566 effective HSP length: 17 effective... length of query: 111 effective length of database: 78,821,179 effective search space: 8749150869 effective...database: Z,756,224,411 effective HSP length: 21 effective length of query: 107 effective length of database: Y,944,475,942 effective... search space: 4488058925794 effective search space used: 4488058925794 T: 0 A: 0 X...mber of successful extensions: 10538 Number of sequences better than 10.0: 0 length of query: 128 length of

  2. 1.56 Terahertz 2-Frames per Second Standoff Imaging

    Science.gov (United States)

    2008-01-01

    data bandwidth of approximately 100 kHz. A circuit was designed and built to drive the galvanometers for the scanner shown in Figure 4. The 200...that excess heat was produced in the motors, which ultimately caused problems with position accuracy. Additionally, since the galvanometer must

  3. Dicty_cDB: VSB156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 64185 5', mRNA sequence. 48 1e-08 2 CD722013 |CD722013.1 oj04d05.y1 Human lacrimal gland, unamplified: oj Ho...quence. 44 8e-08 2 CK626583 |CK626583.1 mj23g01.y1 Mouse RPE/choroid, unamplified

  4. Dicty_cDB: SSC156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available s balsamifera subsp. trichocarpa cDNA 5 prime, mRNA sequence. 64 7e-19 3 BQ855000 |BQ855000.1 QGB24M14.yg.ab1 QG_ABCDI lettuce salina...5e-18 4 BQ862971 |BQ862971.1 QGC22J22.yg.ab1 QG_ABCDI lettuce salinas Lactuca sativa cDNA clone QGC22J22, mR...NA sequence. 60 6e-18 4 BQ862298 |BQ862298.1 QGC20L13.yg.ab1 QG_ABCDI lettuce salinas Lactuca sativa cDNA cl... QGC15E06.yg.ab1 QG_ABCDI lettuce salinas Lactuca sativa cDNA clone QGC15E06, mRNA sequence. 60 1e-17 4 BI12

  5. Dicty_cDB: SFJ156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available Full=Reticulon-1; AltName: Full=Neuroendocrine... 59 1e-07 A60021( A60021 ) trop...S59) RecName: Full=Reticulon-1; &AY665269_1(AY665269|pid:no... 59 8e-08 ( Q16799 ) RecName: Full=Reticulon-1; AltName: Full=Neuroendo...crine... 59 8e-08 CR457030_1( CR457030 |pid:none) Homo s

  6. 34 CFR 668.156 - Approved State process.

    Science.gov (United States)

    2010-07-01

    ... than a single standardized test; (3) Tutoring in basic verbal and quantitative skills, if appropriate; (4) Assistance in developing educational goals; (5) Counseling, including counseling regarding...

  7. 156 EAST AFRICAN MEDICAL JOURNAL Ma/"ch 2002

    African Journals Online (AJOL)

    Objective: To assess post-surgical management of patients with breast cancer at the Kenyatta. National Hospital. ... although absolute benefit of the effect is somewhat smaller ..... women with breast cancer insensitive to hormones, or those.

  8. 26 CFR 1.56(g)-0 - Table of Contents.

    Science.gov (United States)

    2010-04-01

    ... general. (ii) Beginning LIFO and FIFO inventory. (iii) Definitions. (A) LIFO recapture amount. (1) Definition. (2) Assets included. (B) FIFO method. (C) LIFO method. (D) Inventory amounts. (iv) Exchanges.... (g) Disallowance of loss on exchange of debt pools. (h) Policy acquisition expenses of life insurance...

  9. 26 CFR 1.56(g)-1 - Adjusted current earnings.

    Science.gov (United States)

    2010-04-01

    ... are in ending inventory. (B) Pursuant to section 263A and § 1.263A-1(e)(3)(ii)(I), N must capitalize the depreciation allowed for the year for the new manufacturing equipment in the ending inventory of... outstanding policy loan), the resulting loss is allowed as a deduction under paragraph (c)(3) of this section...

  10. Dicty_cDB: SSL156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available TI RGTDYKAPHGIPLDLLDRLLIINTQPYTERKRYLQNFKDSL*rrgcrysrgcittfn*nw c*nftslcnssnhfffisic*kkry*cfs**y*ksl*lic*cqk...WKEEGKAEIVPGVLFIDEVHMLDIECFSYLNRALEDDMSPILIIATNRGNTTI RGTDYKAPHGIPLDLLDRLLIINTQPYTERKRYLQNFKDSL*rrgcrysrgcittfn*nw c*nftslcnssnhfffis...ic*kkry*cfs**y*ksl*lic*cqkiykifkrlsr*ifi*f strnnsnkn**rt

  11. 33 CFR 156.120 - Requirements for transfer.

    Science.gov (United States)

    2010-07-01

    ... hose, consisting of fabric, cord and/or metal); (j) Each hose or loading arm in use meets §§ 154.500... areas. (dd) Welding, hot work operations and smoking are prohibited on vessels during the transfer...

  12. 33 CFR 156.170 - Equipment tests and inspections.

    Science.gov (United States)

    2010-07-01

    ... detonation arrester required by § 154.820, § 154.826(a), and § 154.828(a) of this chapter or 46 CFR 39.40-3(d), and each flame arrester required by § 154.826(a), § 154.828 (a) and (c) of this chapter has been....820(a) and § 154.824 (d) and (e) of this chapter or 46 CFR 39.40-3(a) is calibrated: (i) Within...

  13. 47 CFR 25.156 - Consideration of applications.

    Science.gov (United States)

    2010-10-01

    ... applicant is legally, technically, and otherwise qualified, that the proposed facilities and operations... the public interest, convenience and necessity. (b) Whenever the Commission grants any application...

  14. 40 CFR 156.212 - Personal protective equipment statements.

    Science.gov (United States)

    2010-07-01

    ...: (body protection statement); (glove statement, if applicable); (footwear statement, if applicable... shall be based on the more toxic (lower numbered) category. 2 For labeling language for chemical-resistant gloves, see paragraph (f) of this section. 3 For labeling language for respiratory...

  15. 156 Functionality of the Town Planning Authorities in Effecting ...

    African Journals Online (AJOL)

    User

    Urban and Regional Planning Laws and Control in Nigeria: The Case of Lagos .... system, the agrarian Nature of the economy and the existing mode of transportation. ... In 1861 Lagos was ceded as an annexation of the British colony and.

  16. Dicty_cDB: SSE156 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available S71730 |S71730.1 influenza virus hemagglutinin 5' epitope tag=fusion protein {frame 1, multiple cloning site...} [Saccharomyces cerevisiae=yeast, cloning vector YCpIF15,16,17, Other Plasmid Sy...6 1 S71728 |S71728.1 truncated protein {frame 1, multiple cloning site} [Saccharomyces cerevisiae=yeast, cloning

  17. 40 CFR 421.156 - Pretreatment standards for new sources.

    Science.gov (United States)

    2010-07-01

    ... raffinate from beryl ore. PSNS for the Primary Beryllium Subcategory Pollutant or pollutant property Maximum... produced from beryl ore as beryllium Beryllium 180.4 81.4 Chromium (total) 81.4 33.0 Copper 281.6 134.2....000 0.000 Ammonia (as N) 0.000 0.000 Fluoride 0.000 0.000 (k) Beryl Ore Gangue Dewatering. PSNS...

  18. 1935 15' Quad #156 Aerial Photo Mosaic Index

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — Aerial Photo Reference Mosaics contain aerial photographs that are retrievable on a frame by frame basis. The inventory contains imagery from various sources that...

  19. 29 CFR 1917.156 - Fuel handling and storage.

    Science.gov (United States)

    2010-07-01

    ... shall be minimized by: (A) Automatic quick-closing couplings (closing in both directions when uncoupled... valves; (D) Leakage at valves or connections; and (E) Deterioration or loss of flexible seals in...

  20. The complete exon-intron structure of the 156-kb human gene NFKB1, which encodes the p105 and p50 proteins of transcription factors NF-{kappa}B and I{kappa}B-{gamma}: Implications for NF-{kappa}B-mediated signal transduction

    Energy Technology Data Exchange (ETDEWEB)

    Heron, E.; Deloukas, P.; van Loon, A.P.G.M. [F. Hoffmann-La Roche Limited, Basel (Switzerland)

    1995-12-10

    The NFKB1 gene encodes three proteins of the NF-{kappa}/Rel and I{kappa}B families: p105, p50, and (in mouse) I{kappa}B-{gamma}. We determined the complete genomic structure of human NFKB1. NFKB1 spans 156 kb and has 24 exons with introns varying between 40,000 and 323 bp in length. Although NFKB2, which encodes p100 and p52, also has 24 exons and has a comparable exon-intron structure, it is 20 times shorter than NFKB1. We propose that the long size of NFKB1 is important for transient activation of NF-{kappa}B complexes containing p50. I{kappa}B-{gamma} corresponds to the carboxyl-terminal half of p105. DNA sequence analysis showed that the 3{prime}-end of human intron 11 and the 5{prime}-end of exon 12 of NFKB1 are colinear with the 5{prime}-untranslated region of mouse I{kappa}B-{gamma} cDNA. I{kappa}B-{gamma} is thus likely to be generated by transcription starting within intron 11 and not by alternative splicing of the mouse mRNA encoding p105 and p50. 71 refs., 5 figs., 1 tab.

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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%.

  8. 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...

  9. 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...

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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).

  16. 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

  17. 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.

  18. 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.

  19. 负阻负载和复制运放增益增强技术相结合的低电压低功耗高增益端到端输出范围运算放大器%A 1V,156.7μW,65.9dB Rail-to-Rail Operational Amplifier by Means of Negative Resistance Load and Replica-Amplifier Gain Enhancement

    Institute of Scientific and Technical Information of China (English)

    刘爱荣; 杨华中

    2006-01-01

    A low-voltage,low-power,and high-gain rail-to-rail operational amplifier(OpAmp)is presented.The replica-amplifier gain enhancement technique is applied to improve the DC gain of the amplifier,which does not degrade the output swing and is very suitable for low-voltage applications.In a 0.18μm standard CMOS process,a 1V OpAmp with rail-to-rail output is designed.For a load capacitance of 5 pF,simulation by HSPICE shows that this OpAmp achieves an effective open-loop DC gain of 65.9dB,gain bandwidth of 70.28 MHz,and phase margin of 50° with a quiescent power dissipation of 156.7μW.%设计了一种低电压低功耗高增益端到端运算放大器.为了提高运放的直流增益,采用了复制运放增益增强技术,这种技术的特点是在提高增益的同时不影响输出摆幅,非常适合低电压场合.该运放采用0.18μm标准CMOS工艺,工作电压为1V.仿真结果表明,在5pF负载电容下所获得运放的直流增益达到65.9dB,增益带宽积为70.28MHz,相位裕度为50°,静态功耗为156.7μW.

  20. 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.

  1. 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.

  2. 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

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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

  14. Explaining progress in climate adaptation planning across 156 U.S. municipalities

    NARCIS (Netherlands)

    Shi, L.; Chu, E.; Debats, J.

    2015-01-01

    Problem, research strategy, and findings: Cities are increasingly experiencing the effects of climate change and taking steps to adapt to current and future natural hazard risks. Research on these efforts has identified numerous barriers to climate adaptation planning, but has not yet systematically

  15. AB156. Homocysteine and vitamin B12: risk factors for erectile dysfunction

    Science.gov (United States)

    Lu, Zheng; Mo, Zengnan

    2014-01-01

    Background Increasing levels of homocysteine (Hcy) is associated with cardiovascular disease, and erectile dysfunction (ED) has close relation with cardiovascular disease, therefore, high homocysteine may be one of the risk factors of ED. During the metabolism of homocysteine, vitamin B12 plays an important role and could be the main factor in causing erectile dysfunction as well. Purpose To investigate the relationship between Hcy, vitamin B12 and ED in sample. Methods The study included 1,457 men aged 20-69 who participated in a series of physical examination at the Medical Centre in Fangchenggang First People’s Hospital from September 2009 to December 2009. ED was identified by the five-item International Index of Erectile Function (IIEF-5) questionnaire. All participants were measured for plasma Hcy, vitamin B12, folic acid, systolic blood pressure (SBP), diastolic blood pressure (DBP), body mass index (BMI), fasting plasma glucose, triglyceride and high-density lipoprotein cholesterol (HDL). Smoking, alcoholic drinking and physical activity were collected by face to face communication. Results A total of 691 (47.4%) men were identified as ED in this study, participants with ED were older or more likely to drink alcohol than the non-ED. It was higher Hcy (P=0.032), vitamin B12 (P=0.008) and fasting plasma glucose (P=0.014) in the participants with ED. There were significant positive correlation between ED status (none, mile, moderate and severe) and Hcy (P=0.024), vitamin B12 (P=0.015) and fasting plasma glucose (P=0.002). Logistic regression analysis showed that age, Hcy and vitamin B12 were the main determinants in ED. Hcy was positively associated with ED in the men more than 45, but vitamin B12 was positively related with ED in the men less than 45. Conclusions Hcy was positively associated with ED in elder, however, vitamin B12 was positively related with ED in younger.

  16. Household and context determinants of child labor in 156 districts of 11 developing countries

    NARCIS (Netherlands)

    Webbink, E.; Smits, J.P.J.M.; Jong, E. de

    2008-01-01

    We study household and context determinants of child labor for 150,000 children in 11 developing countries, with child labor rates ranging from 2 to over 20 percent. Multilevel analysis showed socio-economic factors to be still major determinants of child labor, with less child labor in households w

  17. FCJ-156 Hacking the Social: Internet Memes, Identity Antagonism, and the Logic of Lulz.

    Directory of Open Access Journals (Sweden)

    Ryan M. Milner

    2013-12-01

    Full Text Available 4chan and reddit are participatory media collectives undergirded by a “logic of lulz” that favours distanced irony and critique. It often works at the expense of core identity categories like race and gender. However, the logic need not be entirely counterproductive to public discourse. Provided that diverse identities find voice instead of exclusion, these sites may facilitate vibrant, agonistic discussion instead of disenfranchising antagonism. In order to assess this potential for productive agonism, I undertook a critical discourse analysis of these collectives. Emphasising the image memes they produce, I evaluated discourses on race and gender. Both race and gender representations were dominated by familiar stereotypes and partial representations. However, while dissenting perspectives on race were repressed or excluded, dissenting perspectives on gender were vocalised and contested. The ‘logic of lulz’ facilitated both dominance and counter, each articulated with heavy reliance on irony and critique. This logic ambiguously balanced agonism and antagonism, but contestation provided sharper engagement than repression.

  18. Household and context determinants of child labor in 156 districts of 11 developing countries

    NARCIS (Netherlands)

    Webbink, E.; Smits, J.P.J.M.; Jong, E. de

    2008-01-01

    We study household and context determinants of child labor for 150,000 children in 11 developing countries, with child labor rates ranging from 2 to over 20 percent. Multilevel analysis showed socio-economic factors to be still major determinants of child labor, with less child labor in

  19. Yeast Interacting Proteins Database: YJR091C, YLR156W [Yeast Interacting Proteins Database

    Lifescience Database Archive (English)

    Full Text Available ion with Jsn1p in a large-scale analysis Rows with this prey as prey (1) Rows with this prey as bait (0) 7 5...scription Putative protein of unknown function; exhibits a two-hybrid interaction with Jsn1p in a large-scale

  20. LSP 156, Low Power Embedded Analytics: FY15 Line Supported Information, Computation, and Exploitation Program

    Science.gov (United States)

    2015-12-04

    200 TB, Source : National Center for Biotechnology Information (NCBI) - Size: 541 TB, Source : Common Crawl Foundation - http://commoncrawl.org...programmable gate -array (FPGA) is at the heart of the architecture. It performs three tasks: a) Control non-volatile memory (NVM) storage such as...Document similarity search c. Key-value store caching d. Graph traversal e. PageRank f. Friends-of-friends B. Interface with open- source software

  1. Random harmonic analysis program, L221 (TEV156). Volume 1: Engineering and usage

    Science.gov (United States)

    Miller, R. D.; Graham, M. L.

    1979-01-01

    A digital computer program capable of calculating steady state solutions for linear second order differential equations due to sinusoidal forcing functions is described. The field of application of the program, the analysis of airplane response and loads due to continuous random air turbulence, is discussed. Optional capabilities including frequency dependent input matrices, feedback damping, gradual gust penetration, multiple excitation forcing functions, and a static elastic solution are described. Program usage and a description of the analysis used are presented.

  2. Yeast Interacting Proteins Database: YGL156W, YOL082W [Yeast Interacting Proteins Database

    Lifescience Database Archive (English)

    Full Text Available and alpha-mannosidase (Ams1p) to the phagophore assembly site for packaging into Cvt vesicles Rows with this...minopeptidase I (Lap4p) and alpha-mannosidase (Ams1p) to the phagophore assembly site for packaging into Cvt

  3. 18 CFR 156.3 - Applications; number of copies; general requirements.

    Science.gov (United States)

    2010-04-01

    ... principal place of business; whether applicant is an individual, corporation or municipality as defined in... any certificate of public convenience and necessity, franchise or other authorization which...

  4. National Ignition Facility sub-system design requirements ancillary systems SSDR 1.5.6

    Energy Technology Data Exchange (ETDEWEB)

    Spann, J.; Reed, R.; VanArsdall, P.; Bliss, E.

    1996-09-01

    This System Design Requirement document establishes the performance, design, development, and test requirements for the Ancillary Systems, which is part of the NIF Integrated Computer Control System (ICCS).

  5. 42 CFR 441.156 - Team developing individual plan of care.

    Science.gov (United States)

    2010-10-01

    ... mental diseases, and a psychologist who has a master's degree in clinical psychology or who has been... individuals. (4) A psychologist who has a master's degree in clinical psychology or who has been certified by..., either— (1) A Board-eligible or Board-certified psychiatrist; (2) A clinical psychologist who has...

  6. Household and context determinants of child labor in 156 districts of 11 developing countries

    NARCIS (Netherlands)

    Webbink, E.; Smits, J.P.J.M.; Jong, E. de

    2008-01-01

    We study household and context determinants of child labor for 150,000 children in 11 developing countries, with child labor rates ranging from 2 to over 20 percent. Multilevel analysis showed socio-economic factors to be still major determinants of child labor, with less child labor in households w

  7. Tank 241-A-101, cores 154 and 156 analytical results for the 45 day report

    Energy Technology Data Exchange (ETDEWEB)

    Steen, F.H.

    1996-10-18

    This document is the 45-day laboratory report for tank 241 -A-101 push mode core segments collected between July II, 1996 and July 25, 1996. The segments were subsampled and analyzed in accordance with the Tank 241-A-101 Push Mode Core Sampling and Analysis Plan (TSAP) (Field, 1996) and the Safety Screening Data Quality Objective (DQO)(Dukelow, et al., 1995). The analytical results are included in the data summary table (Table 1). None of the samples submitted for Total Alpha Activity (AT) or Differential Scanning Calorimetry (DSC) analyses exceeded notification limits as stated in the Safety Screening DQO (Dukelow, et al., 1995). Statistical evaluation on results by calculating the 95% upper confidence limit is not performed by the 222-S Laboratory and is not considered in this report. Primary safety screening results and the raw data from thermogravimetric analysis (TGA) and DSC analyses are included in this report.

  8. Aquaculture Asia, Vol.13, No.2, pp.1-56, April-June 2008

    OpenAIRE

    2008-01-01

    Peter Edwards writes on rural aquaculture: From integrated carp polyculture to intensive monoculture in the Pearl River Delta, South China. Better management practices for Vietnamese catfish. Ipomoea aquatica – an aquaculture friendly macrophyte. A status overview of fisheries and aquaculture development in Pakistan with context to other Asian countries. The changing face of post-grad education in aquaculture: contributing to soaring production and sustainable practices. H...

  9. 29 CFR 784.156 - Establishments exclusively devoted to named operations.

    Science.gov (United States)

    2010-07-01

    ... engagement by other employees in like duties there during periods when none of the named operations are being... elsewhere in the previous discussion, the section 13(b)(4) exemption depends on employment of the employee... the absence of evidence to the contrary, an indication that the employees employed there are employed...

  10. PS1-56: Beyond Barriers: Systemic Constraints Limiting Sexual Health Care for Breast Cancer Survivors

    Science.gov (United States)

    Halley, Meghan; May, Suepattra; Rendle, Katharine; Frosch, Dominick; Kurian, Allison

    2013-01-01

    Background/Aims Sexual health problems represent one of the most frequently experienced and longest-lasting effects of breast cancer treatment, but research suggests that providers rarely discuss sexual health with their patients. Existing research examining barriers to addressing the sexual health concerns of cancer patients has focused on discrete characteristics of the provider-patient interaction without considering the broader context in which these interactions occur. Drawing on focus group discussions with breast cancer survivors, we explore how foundational cultural and structural characteristics of the healthcare system may be preventing breast cancer survivors from addressing their sexual health concerns. Methods Five focus groups were conducted with breast cancer survivors receiving support services at a breast cancer advocacy and resource organization in Northern California. Each group focused on a different aspect of treatment including: 1) diagnosis; 2) surgery and reconstruction; 3) chemotherapy; 4) radiation; and 5) survivorship. An interview guide for each topic area was used to elicit participants’ thoughts, opinions and experiences of breast cancer treatment. Analysis utilized inductive techniques incorporating elements of Grounded Theory to identify salient themes that emerged in the discussions. Results An average of eight women participated in each focus group, and women were allowed to participate in more than one group, for a total of 21 participants. Participants’ discussions illustrated three core ways in which cultural and structural characteristics of the healthcare system prevented them from addressing their sexual health concerns, including: 1) the structure of cancer care led to participants being disconnected from the healthcare system at the time when sexual side effects most commonly emerged; 2) when their sexual side effects did emerge, the highly specialized structure of the biomedical system made it difficult for patients to identify the appropriate provider to address their complex sexual health concerns; and 3) when patients did discuss sexual health with their providers, their providers approached sexuality as primarily physical, while participants were experiencing biopsychosocial sexual concerns. Conclusions These results suggest that addressing breast cancer survivors’ sexual health needs will require a comprehensive approach that includes educating physicians, coordinating existing resources, and developing new sources of information and support during the survivorship period.

  11. Prognostic significance of clinicopathologic parameters in gastrointestinal stromal tumors: a study of 156 cases

    Institute of Scientific and Technical Information of China (English)

    Yumei LIANG; Xianghong LI; Youyong LU; Yali LV; Mei ZHONG; Xiaolu PU; Wenmei LI

    2008-01-01

    The biological behavior of gastrointestinal stromal tumors (GISTs) are highly variable. To invest-igate the biological behavior of GIST, we collected 83 cases of gastric and 62 cases of small intestinal GIST from the Department of Pathology of the Chinese PLA General Hospital. The parameters include age, primary tumor location, tumor diameter, mitotic index, tumor necrosis, risk assessment, clinical stage and the c-kit exon 11 muta-tion. All these were analyzed in 105 cases along with the follow-up data and tested by log rank and COX hazard proportional model. We find that the average age of gast-ric GIST was 55.4 years. Of the 62 cases that were fol-lowed up, 17 cases had metastasis or recurrence and the 5-year survival rate was (66.51±17.06)%. For the small intestinal GIST, the average age was 50.6 years and 43 cases were followed up. Of these, 22 cases had meta-stasis or recurrence and the 5-year survival rate was (61.76±18.30)%. Small intestinal GIST was more fre-quently associated with metastasis and tumor relapse than gastric GIST (χ2= 6.131, P=0.013). For gastric GIST, patients younger than 50 years (P = 0.046), the advanced clinical stage (P=0.0001), the large tumor diameter (P=0.0001), a high mitotic index (P=0.0001), necrosis (P=0.0001) and a high risk grade (P=0.004) were all correlated with a lower survival rate. The COX hazard proportional model revealed that advanced clinical stage (P=0.001), large tumor size (P=0.001), a high mitotic index (P = 0.002) and the high risk grade (P = 0.018) indi-cated a poorer prognosis in gastric GIST. For small intest-inal GIST, necrosis (P = 0.036) and advanced clinical stage (P = 0.010) were associated with lower survival rates and the clinical stage was shown to be an independent prognostic indicator. A total of 25 cases harbored muta-tions in c-kit exon 11. The frequency of c-kit mutation was 32% and 22.5% for gastric and small intestinal GIST, respectively. In gastric GIST, the mutated c-kit was pre-dominant in patients older than 50 years of age. But in the small intestinal GIST, the mutated c-kit was predominant in the age group of 40-49 years. In conclusion, for gastric GIST, clinical stage, tumor size, mitotic index, and risk grade are the prognostic indicators. For small intestinal GIST, necrosis and clinical stage are the prognostic indi-cators. Small intestinal GIST are more aggressive than gastric GIST. The occurrence of c-kit mutation may cor-relate with the age of patients.

  12. Health-hazard evaluation report HETA 88-156-1984, Georgia Gulf Corporation, Tiptonville, Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    Calvert, G.M.; Mathias, C.G.T.

    1989-08-01

    The Georgia Gulf Corporation, Tiptonville, Tennessee, was investigated because of an outbreak of dermatitis. The facility produced polyvinyl-chloride compound by blending polyvinyl-chloride resin with other ingredients. Rashes were reported by 22 production workers and three clerical or management workers. Examination of seven of the workers indicated that all of them appeared to have contact dermatitis. Rashes were found in areas of the body where powders may come in contact with the body, and the rashes improved when away from work. Blender operators had a significantly elevated risk of developing dermatitis compared with production workers who had lower exposures to dusts and powders. The report concludes that the dermatitis was probably of occupational origin, due to exposure to airborne pigment powders and acrylic polymers containing residual monomers. The report recommends measures to reduce exposures and prevent dermatitis, including showering at the end of a work shift that involved exposure to dusts and powders, reduction of airborne dust levels through engineering controls, and the use of protective clothing, barrier creams, and skin moisturizers.

  13. 21 CFR 133.156 - Low-moisture mozzarella and scamorza cheese.

    Science.gov (United States)

    2010-04-01

    ... may be reheated and again stirred. The whey is drained and the curd may be cut and piled to promote further separation of whey. It may be washed with cold water and the water drained off. The curd may be... and stretching process and/or applied to the surface of the cheese. (c) Nomenclature. The names of...

  14. NODC Standard Format Drifting Buoy (F156) Data (1975-1994) (NODC Accession 0014200)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data type contains time series ocean circulation data determined by tracking the movement of drifting buoys, drogues or other instrumented devices. Movement is...

  15. Quadrupole decay strength of the M1 scissors mode of {sup 156}Gd

    Energy Technology Data Exchange (ETDEWEB)

    Beck, T.; Beller, J.; Gayer, U.; Mertes, L.; Pai, H.; Pietralla, N.; Ries, P.; Romig, C.; Werner, V.; Zweidinger, M. [IKP, TU Darmstadt (Germany); Derya, V. [IKP, Universitaet zu Koeln (Germany); Isaak, J.; Loeher, B.; Savran, D. [EMMI, GSI, Darmstadt (Germany); FIAS, Frankfurt (Germany); Scheck, M. [IKP, TU Darmstadt (Germany); School of Engineering, UWS, Paisley (United Kingdom); SUPA, Glasgow (United Kingdom); Tornow, W.; Weller, H.R. [Duke University, Durham (United States)

    2015-07-01

    The isovector low-lying J{sup π}{sub K}=1{sup +}{sub 1} scissors mode of deformed nuclei has been studied extensively in (e,e{sup '}) and (γ,γ{sup '}) experiments over the last 30 years with the main focus on strong M1 transitions to the ground state band. In the framework of the semiclassical two-rotor-model it has its origin in quadrupole deformation. A considerable E2 matrix element between the rotational band of the scissors mode and the ground band is predicted which has not been addressed experimentally. A photon-scattering experiment with linearly-polarized quasi monoenergetic vector (γ)-rays has been performed at the High Intensity vector (γ)-ray Source (HIvector (γ)S) at Duke University, Durham, NC, exploiting the γ{sup 3} setup. We have measured an E2/M1-multipole mixing ratio for the 1{sup +}{sub sc}→2{sup +}{sub 1} transition for the first time. The Alaga rule is applicable and delivers a first estimate of the transition strength B(E2:2{sup +}{sub sc}→0{sup +}{sub 1}). A candidate for a 2{sup +}{sub sc}→2{sup +}{sub 1} transition is discussed.

  16. 75 FR 156 - National Institute of Allergy and Infectious Diseases; Notice of Closed Meetings

    Science.gov (United States)

    2010-01-04

    ... Institute of Allergy and Infectious Diseases; Notice of Closed Meetings Pursuant to section 10(d) of the... Allergy and Infectious Diseases Special Emphasis Panel, ``Autoimmunity.'' Date: January 19, 2010. Time: 1...

  17. Egwuatu et al., Afr. J. Infect. Dis. (2016) 10(2): 156 – 163 DOI ...

    African Journals Online (AJOL)

    PROF ADEWUNMI

    This study investigated the effect of daily TMP-SMX prophylaxis on faecal carriage rates .... on the basis of their reactions to citrate, oxidase, urease, and growth characteristics on Kliager Iron Agar. All motile ... Isolates with zones of inhibition to.

  18. 37 CFR 1.56 - Duty to disclose information material to patentability.

    Science.gov (United States)

    2010-07-01

    ... application within the meaning of this section are: (1) Each inventor named in the application; (2) Each... inventor, with the assignee or with anyone to whom there is an obligation to assign the application. (d) Individuals other than the attorney, agent or inventor may comply with this section by disclosing...

  19. 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.

  20. 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.

  1. 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).

  2. 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.

  3. 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

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. Within-School Spillover Effects of Foreclosures and Student Mobility on Student Academic Performance. Working Papers. No. 15-6

    Science.gov (United States)

    Bradbury, Katharine; Burke, Mary A.; Triest, Robert K.

    2014-01-01

    Aside from effects on nearby property values, research is sparse on how foreclosures may generate negative externalities. Employing a unique dataset that matches individual student records from Boston Public Schools--including test scores, demographics, home address moves, and school changes--with real estate records indicating whether the student…

  9. Both the dimerization and immunochemical properties of E-cadherin EC1 domain depend on Trp(156) residue

    DEFF Research Database (Denmark)

    Laur, Oscar Y; Klingelhöfer, Jörg; Troyanovsky, Regina B;

    2002-01-01

    Using site-directed mutagenesis, we show in this paper that the adhesive interface detected in cadherin crystals is unlikely to mediate adhesive interaction between myc- and flag-tagged E-cadherin molecules in human A-431 cells. We also found that a critical residue within this interface, His(233...

  10. Falquet de Romans, “Ma bella dompna, per vos dei esser gais” (BdT 156.8

    Directory of Open Access Journals (Sweden)

    Paolo Di Luca

    2010-08-01

    Full Text Available “Ma bella dompna per vos dei esser gais” by Falquet de Romans has been taken for a courtly song for a long time. However, the poem’s metrical form is derived directly from that of the epic, as illustrated by the use of monorhymed ‘décasyllabes’ with non-systematic epic caesura and the presence of a ‘petit vers’ at the end of each stanza. The poem may thus be defined as stanzaic but not lyric because its versification is that of the chanson de geste and its music must be that of an epic chant. Moreover, its content reflects the rhetorical structure of the ‘salut d’amor’, an epistolary genre in which the lover sends a letter to his lady asking her to respond to his love. Thus, “Ma bella dompna” should be considered a formal hybrid between ‘salut d’amor’ and ‘chanson de geste’; in this sense it is to be compared to those few compositions of an epistolary nature that employ epic form, such as Raimbaut de Vaqueiras’ famous letter to the Marquis Boniface of Monferrato, which is probably the prototype of this poetic experiment, along with two pairs of ‘laisses’ exchanged between Gui de Cavaillon and Bertran Folco d’Avignon.

  11. SU-E-J-156: Preclinical Inverstigation of Dynamic Tumor Tracking Using Vero SBRT Linear Accelerator: Motion Phantom Dosimetry Study

    Energy Technology Data Exchange (ETDEWEB)

    Mamalui-Hunter, M; Wu, J; Li, Z; Su, Z [University of Florida/Radiation Oncology, Jacksonville, FL (United States)

    2014-06-01

    Purpose: Following the ‘end-to-end testing’ paradigm of Dynamic Target Tracking option in our Image-Guided dedicated SBRT VeroTM linac, we verify the capability of the system to deliver planned dose to moving targets in the heterogeneous thorax phantom (CIRSTM). The system includes gimbaled C-band linac head, robotic 6 degree of freedom couch and a tumor tracking method based on predictive modeling of target position using fluoroscopically tracked implanted markers and optically tracked infrared reflecting external markers. Methods: 4DCT scan of the motion phantom with the VisicoilTM implanted marker in the close vicinity of the target was acquired, the ‘exhale’=most prevalent phase was used for planning (iPlan by BrainLabTM). Typical 3D conformal SBRT treatment plans aimed to deliver 6-8Gy/fx to two types of targets: a)solid water-equivalent target 3cm in diameter; b)single VisicoilTM marker inserted within lung equivalent material. The planning GTV/CTV-to-PTV margins were 2mm, the block margins were 3 mm. The dose calculated by MonteCarlo algorithm with 1% variance using option Dose-to-water was compared to the ion chamber (CC01 by IBA Dosimetry) measurements in case (a) and GafchromicTM EBT3 film measurements in case (b). During delivery, the target 6 motion patterns available as a standard on CIRSTM motion phantom were investigated: in case (a), the target was moving along the designated sine or cosine4 3D trajectory; in case (b), the inserted marker was moving sinusoidally in 1D. Results: The ion chamber measurements have shown the agreement with the planned dose within 1% under all the studied motion conditions. The film measurements show 98.1% agreement with the planar calculated dose (gamma criteria: 3%/3mm). Conclusion: We successfully verified the capability of the SBRT VeroTM linac to perform real-time tumor tracking and accurate dose delivery to the target, based on predictive modeling of the correlation between implanted marker motion and external surrogate of breathing motion.

  12. Fruit and Vegetable Consumption of U.S. Youth, 2009-2010. NCHS Data Brief. Number 156

    Science.gov (United States)

    Nielsen, Samara Joy; Rossen, Lauren M.; Harris, Diane M.; Ogden, Cynthia L.

    2014-01-01

    The Dietary Guidelines for Americans (DGA), 2010 encourage Americans, including youth, to increase their consumption of fruits and vegetables. Individuals are encouraged to "eat a variety of vegetables, especially dark-green and red and orange vegetables." Fruits and vegetables are sources of many under-consumed nutrients and consuming…

  13. Mutation p.R156H of KRT10 responsible for severe phenotype of epidermolytic ichthyosis in a Chinese family

    Directory of Open Access Journals (Sweden)

    Li Z

    2014-09-01

    Full Text Available Zhiliang Li,1,* Qiao Liu,2,* Aimin Wang,2 Hongsheng Wang,1 Chengrang Li1 1Department of Dermatology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, People's Republic of China; 2Hainan Provincial Hospital of Skin Disease, Hainan, People's Republic of China  *These authors contributed equally to this workEpidermolytic ichthyosis is a rare genetic disorder characterized by diffuse erythroderma from the time of birth with subsequent appearance of thick, brown scales and occasional blister formation. Mutation has been found in keratin 1 (K1 and keratin 10 (K10 genes.1 Epidermolytic hyperkeratosis (EHK is mostly inherited in a dominant mode. We report a Chinese family of EHK sufferers and their mutation findings. 

  14. 1,5,6-Triphenyl-8-oxa-7-selena-6-phosphabicyclo[3.2.1]octane-6-selone

    Directory of Open Access Journals (Sweden)

    Yang Li

    2008-01-01

    Full Text Available The structure of the title compound, C23H21OPSe2, consists of fused puckered five- and six-membered rings, PSeC2O and C5O, respectively, with a C2O bridgehead. The C5O ring adopts a chair conformation, whilst the C2PSeO ring has an envelope conformation.

  15. Determination of the deuterium abundances in water from 156 to 10,000 ppm by SIFT-MS.

    Science.gov (United States)

    Španěl, Patrik; Shestivska, Violetta; Chippendale, Thomas W E; Smith, David

    2011-01-01

    In response to a need for the measurement of the deuterium (D) abundance in water and aqueous liquids exceeding those previously recommended when using flowing afterglow mass spectrometry (FA-MS) and selected ion flow tube mass spectrometry (SIFT-MS) (i.e. 1000 parts per million, ppm), we have developed the theory of equilibrium isotopic composition of the product ions on which these analytical methods are based to encompass much higher abundances of D in water up to 10,000 ppm (equivalent to 1%). This has involved an understanding of the number density distributions of the H, D, (16)O, (17)O and (18)O isotopes in the isotopologues of H(3)O(+)(H(2)O)(3) hydrated ions (i.e. H(9)O (4) (+) cluster ions) at mass-to-charge ratios (m/z) of 73, 74 and 75, the relative ion number densities of which represent the basis of FA-MS and SIFT-MS analyses of D abundance. Specifically, an extended theory has been developed that accounts for the inclusion of D atoms in the m/z 75 ions, which increasingly occurs as D abundance in the water is increased, and which is used as a reference signal for the m/z 74 ions in the measurement of D abundance. In order to investigate the efficacy of this theory, experimental measurements of deuterium abundance in standard mixtures were made by the SIFT-MS technique using two similar instruments and the results compared with the theory. It is demonstrated that the parameterization of experimental data can be used to formulate a simple calculation algorithm for real-time SIFT-MS measurements of D abundance to an accuracy of 1% below 1000 ppm and degrades to about 2% at 10,000 ppm.

  16. Falquet de Romans, “Ma bella dompna, per vos dei esser gais” (BdT 156.8)

    OpenAIRE

    Paolo Di Luca

    2010-01-01

    “Ma bella dompna per vos dei esser gais” by Falquet de Romans has been taken for a courtly song for a long time. However, the poem’s metrical form is derived directly from that of the epic, as illustrated by the use of monorhymed ‘décasyllabes’ with non-systematic epic caesura and the presence of a ‘petit vers’ at the end of each stanza. The poem may thus be defined as stanzaic but not lyric because its versification is that of the chanson de geste and its music must be that of an epic chant....

  17. Genotype‐phenotype relationships in the low‐phospholipid‐associated cholelithiasis syndrome: A study of 156 consecutive patients

    National Research Council Canada - National Science Library

    Poupon, Raoul; Rosmorduc, Olivier; Boëlle, Pierre Yves; Chrétien, Yves; Corpechot, Christophe; Chazouillères, Olivier; Housset, Chantal; Barbu, Véronique

    2013-01-01

    The low‐phospholipid‐associated cholelithiasis syndrome (LPAC; OMIM 171060) is a peculiar form of intrahepatic cholelithiasis occurring in young adults, associated with ABCB4/MDR3 gene sequence variations...

  18. 76 FR 36578 - 156th Meeting of the Advisory Council on Employee Welfare and Pension Benefit Plans; Notice of...

    Science.gov (United States)

    2011-06-22

    .... Descriptions of these topics are available on the Advisory Council page of the EBSA Web site, at http://www.dol... submit a written statement may do so by submitting 30 copies on or before July 12, 2011 to Larry Good... format transmitted to good.larry@dol.gov . It is requested that statements not be included in the body...

  19. 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...

  20. Structural, spectral, dielectric and magnetic properties of Tb-Dy doped Li-Ni nano-ferrites synthesized via micro-emulsion route

    Science.gov (United States)

    Junaid, Muhammad; Khan, Muhammad Azhar; Iqbal, F.; Murtaza, Ghulam; Akhtar, Majid Niaz; Ahmad, Mukhtar; Shakir, Imran; Warsi, Muhammad Farooq

    2016-12-01

    Terbium (Tb) and dysprosium (Dy) doped lithium-nickel nano-sized ferrites (Li0.2Ni0.8Tb0.5xDy0.5xFe2-xO4 where x=0.00-0.08) were prepared by micro-emulsion technique. The X-ray diffraction (XRD) patterns confirmed the single phase cubic spinel structure. The lattice constant was increased due to larger ionic radii of Tb3+ and Dy3+ cations. The crystallite size was found in the range 30-42 nm. The FTIR (Fourier transform infrared spectroscopy) spectra revealed two significant absorption bands (~400-600 cm-1) which indicate the formation of cubic spinel structure. The peaking behavior of dielectric parameters was observed beyond 1.5 GHz. The dielectric constant and dielectric loss were found to decrease by the increase of Tb-Dy contents and frequency. The doping of Tb and Dy in Li-Ni ferrites led to increase the coercive field (120-156 Oe). The smaller magnetic and dielectric parameters suggested the possible utility of these nano-materials in switching and microwave devices applications.

  1. 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.

  2. 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.

  3. 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...

  4. 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...

  5. The Biopolitics of Lifestyle: Foucault, Ethics and Healthy Choices : Christopher Mayes, 2016, Routledge (Oxford and New York, 978-1-138-93386-6, 156 pp.).

    Science.gov (United States)

    Cooper, Andrew

    2017-03-01

    Unlike many recent studies on the notion of lifestyle, Christopher Mayes' The Biopolitics of Lifestyle balances theoretical rigour with empirical investigation to problematize the use of lifestyle in public health strategies. Not only does Mayes' book expose the unjustified emphasis on individual autonomy undergirding neoliberal strategies of governance and contemporary ethical theory, it also marks a significant step forward in enhancing our understanding of one of Foucault's most underappreciated concepts, the dispositif. In clearly framing the import of Foucaultian analysis and placing it against the backdrop of the obesity epidemic, Mayes continues his contributions towards a productive space wherein practitioners, social theorists, and ethicists can genuinely and self-reflectively exchange knowledges in order to respond to living issues of ethical import.

  6. 156 HIV and metabolic disease: Clues to control of HIV infection from the immune and virological response to high dose Vitamin D challenge

    Science.gov (United States)

    Peters, Barry

    2014-01-01

    Effective use of HAART markedly reduces morbidity and mortality due to classical HIV disease. The 4 key emerging diseases in people with HIV that are amenable to prevention & therapy are Coronary Heart Disease, Renal Disease, Fragility Fractures, Diabetes. These constitute an increasing burden of morbidity and mortality in HIV uninfected people due to an aging population and are becoming even more prevalent in people with chronic HIV. The issue is exemplified by fragility fractures, a major cause of mortality in the elderly, and emerging as a manifestation occurring earlier in people with HIV, and increasing in incidence. The Probono Study from Kings College London demonstrated among 222 patients with matched controls that reported fractures at any site during adulthood occurred more frequently in HIV than controls, 45 (20.3%) vs. 16 (7.2%) (OR = 3.27; P = 0.0001). Osteoporosis was more prevalent in HIV (17.6% vs. 3.6%, P < 0.0001). In HIV, use of highly active antiretroviral therapy (HAART), low body mass and serum PTH were significantly related to low BMD in multivariate analysis. The changing patterns of morbidity and mortality in HIV, driven by the metabolic consequences of HIV infection itself, and the HAART therapy requires development of an appropriate screening and management response.

  7. CRED Subsurface Temperature Recorder (STR); MHI, LAN; Long: -156.96869, Lat: 20.73729 (WGS84); Sensor Depth: 8.23m; Data Range: 20050804-20060806.

    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...

  8. CRED Subsurface Temperature Recorder (STR); MHI, LAN; Long: -156.83701, Lat: 20.87187 (WGS84); Sensor Depth: 13.10m; Data Range: 20060805-20081019.

    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...

  9. CRED Subsurface Temperature Recorder (STR); MHI, LAN; Long: -156.83705, Lat: 20.87186 (WGS84); Sensor Depth: 13.11m; Data Range: 20081019-20101021.

    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...

  10. SUPPLEMENTARY COMPARISON: Final report on EUROMET comparison EUROMET.PR-S2 (Project No. 156): Responsivity of detectors for radiant power of lasers

    Science.gov (United States)

    Kück, Stefan

    2010-01-01

    The EUROMET.PR-S2 intercomparison of Radiant Power of High Power Lasers for five measurands was carried as a combined round-robin/star type comparison. In total nine participants took part, five from Europe (national metrology institutes of France, Germany (pilot), Great Britain, Romania, Sweden) and four outside Europe (national metrology institutes of Australia, Japan, South Africa and The United States of America). Therefore, this comparison can be considered as a worldwide one. The measurements took place from January 2005 to September 2007. All participants supplied detailed reports of their measurements including full uncertainty statements. All measurement results reported by the participants were used for the intercomparison and no measurement was subject to rejection. The analysis method introduced in section 6 follows the Guidelines for CCPR Comparison Report Preparation and has been accepted by all participants. For the calculation of the supplementary key comparison reference value no participant had to be excluded and the weighted mean with cut-off used here has been supported by all participants. The unilateral degrees of equivalence (DoE) calculated for each participant are approximately 63% consistent with their uncertainties at the k = 2 level and approximately 81% consistent within k = 3. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by EURAMET, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

  11. 29 CFR Appendix D to Subpart L of... - Availability of Publications Incorporated by Reference in Section 1910.156 Fire Brigades

    Science.gov (United States)

    2010-07-01

    ... (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH... Criteria for Structural Firefighter's Helmets” (1977) U.S. Fire Administration, National Fire Safety and...) are available for review at many universities and public libraries throughout the country....

  12. Compound heterozygosity for mutations (W156X and R225W) in SCN5A associated with severe cardiac conduction disturbances and degenerative changes in the conduction system

    NARCIS (Netherlands)

    Bezzina, CR; Rook, MB; Groenewegen, WA; Herfst, LJ; van der Wal, AC; Lam, J; Jongsma, HJ; Wilde, AAM; Mannens, MMAM

    2003-01-01

    Cardiac conduction defects associate with mutations in SCN5A, the gene encoding the cardiac Na+ channel. In the present study, we characterized a family in which the proband was born in severe distress with irregular wide complex tachycardia. His older sister died at 1 year of age from severe conduc

  13. CRED Subsurface Temperature Recorder (STR); MHI, MAI; Long: -156.58458, Lat: 20.79070 (WGS84); Sensor Depth: 14.60m; Data Range: 20050806-20070402.

    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...

  14. CRED Subsurface Temperature Recorder (STR); MHI, MAI; Long: -156.64297, Lat: 21.01736 (WGS84); Sensor Depth: 12.19m; Data Range: 20081023-20101018.

    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...

  15. Whole genome sequencing and analyses of Xylella fastidiosa subsp. fastidiosa strain GV156 causing Pierce’s disease of grapevine in Taiwan

    Science.gov (United States)

    Xylella fastidiosa is a nutritionally fastidious Gram-negative bacterium causing Pierce’s disease (PD) of grapevines. PD was first reported in Anaheim, California in 1892 and is currently endemic in California and the southeastern U.S. PD also was found outside the U.S. but is limited to the America...

  16. Lasofoxifene (CP-336,156) protects against the age-related changes in bone mass, bone strength, and total serum cholesterol in intact aged male rats.

    Science.gov (United States)

    Ke, H Z; Qi, H; Chidsey-Frink, K L; Crawford, D T; Thompson, D D

    2001-04-01

    The purpose of this study was to evaluate if long-term (6 months) treatment with lasofoxifene (LAS), a new selective estrogen receptor modulator (SERM), can protect against age-related changes in bone mass and bone strength in intact aged male rats. Sprague-Dawley male rats at 15 months of age were treated (daily oral gavage) with either vehicle (n = 12) or LAS at 0.01 mg/kg per day (n = 12) or 0.1 mg/kg per day (n = 11) for 6 months. A group of 15 rats was necropsied at 15 months of age and served as basal controls. No significant change was found in body weight between basal and vehicle controls. However, an age-related increase in fat body mass (+42%) and decrease in lean body mass (-8.5%) was observed in controls. Compared with vehicle controls, LAS at both doses significantly decreased body weight and fat body mass but did not affect lean body mass. No significant difference was found in prostate wet weight among all groups. Total serum cholesterol was significantly decreased in all LAS-treated rats compared with both the basal and the vehicle controls. Both doses of LAS treatment completely prevented the age-related increase in serum osteocalcin. Peripheral quantitative computerized tomography (pQCT) analysis at the distal femoral metaphysis indicated that the age-related decrease in total density, trabecular density, and cortical thickness was completely prevented by treatment with LAS at 0.01 mg/kg per day or 0.1 mg/kg per day. Histomorphometric analysis of proximal tibial cancellous bone showed an age-related decrease in trabecular bone volume (TBV; -46%), trabecular number (Tb.N), wall thickness (W.Th), mineral apposition rate, and bone formation rate-tissue area referent. Moreover, an age-related increase in trabecular separation (Tb.Sp) and eroded surface was observed. LAS at 0.01 mg/kg per day or 0.1 mg/kg per day completely prevented these age-related changes in bone mass, bone structure, and bone turnover. Similarly, the age-related decrease in TBV and trabecular thickness (Tb.Th) and the age-related increase in osteoclast number (Oc.N) and osteoclast surface (Oc.S) in the third lumbar vertebral cancellous bone were completely prevented by treatment with LAS at both doses. Further, LAS at both doses completely prevented the age-related decrease in ultimate strength (-47%) and stiffness (-37%) of the fifth lumbar vertebral body. These results show that treatment with LAS for 6 months in male rats completely prevents the age-related decreases in bone mass and bone strength by inhibiting the increased bone resorption and bone turnover associated with aging. Further, LAS reduced total serum cholesterol and did not affect the prostate weight in these rats. Our data support the potential use of a SERM for protecting against the age-related changes in bone and serum cholesterol in elderly men.

  17. CRED Subsurface Temperature Recorder (STR); MHI, LAN; Long: -156.87525, Lat: 20.74163 (WGS84); Sensor Depth: 11.58m; Data Range: 20081020-20101022.

    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...

  18. CRED Subsurface Temperature Recorder (STR); MHI, MAI; Long: -156.42033, Lat: 20.59195 (WGS84); Sensor Depth: 14.63m; Data Range: 20081018-20101020.

    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...

  19. 147 fs, 51 MHz soliton fiber laser at 1.56 microm with a fiber-connector-type SWNT/P3HT saturable absorber.

    Science.gov (United States)

    Shohda, Fumio; Shirato, Takafumi; Nakazawa, Masataka; Mata, Junji; Tsukamoto, Jun

    2008-12-08

    We fabricated a fiber-connector-type saturable absorber in which SWNTs and P3HT (poly-3-hexylthiophene) were coated on the fiber connector end. This saturable absorber allowed us to realize a short laser cavity length. We used a soliton cavity configuration to generate the shortest pulse (147 fs) at the highest repetition rate (51 MHz) yet obtained with carbon nanotubes (CNT) related saturable absorbers.

  20. Determination of gibberellins in fermentation broth produced by Fusarium verticilliodes MTCC 156 by high-performance liquid chromatography tandem mass spectrometry.

    Science.gov (United States)

    Sharma, Rohit; Iyer, Jitesh P; Chakraborti, Asit K; Banerjee, Uttam Chand

    2004-02-01

    A method for the detection of gibberellins produced by Fusarium verticilliodes is described using HPLCMS/MS (HPLC tandem MS). A Hypersil (5 microm) octadecylsilane column with methanol/water as eluent in the ratio 3:1 at a flow rate of 0.5 ml/min was used. In the HPLCMS, GA(3) (gibberellic acid; m / z 346.3) eluted at retention time tr=3.08 min, with the corresponding mass chromatogram having peaks at m / z 346.7 and 328.8 corresponding to the M+ and M+-H2O ions respectively. The ethyl acetate extract from the broth, subjected to HPLCMS analysis under similar conditions, showed a constituent with tr=2.13 min, the mass chromatogram of which exhibited peaks at m / z 348.9 and 331.9 corresponding to the MH+ and MH+-H2O ions respectively. Comparison of the MS and MS/MS results (direct infusion) of an authentic sample of GA3 and the ethyl acetate extract from the broth revealed the formation of reduced GA3 in the broth. The present study, utilizing HPLCMS/MS, describes an improved methodology for the unambiguous determination and estimation of gibberellins from fermentation broth.

  1. Vertical cavity surface emitting laser emitting at 1.56 microns with AlGaAsSb/AlAsSb distributed Bragg reflectors

    Energy Technology Data Exchange (ETDEWEB)

    Blum, O.; Klem, J.F.; Lear, K.L.; Vawter, G.A.; Kurtz, S.R.

    1998-07-01

    The authors report 77K operation of an optically pumped vertical cavity surface emitting laser with an Sb-based cavity. The structure consists of 15 and 20 pair AlGaAsSb/AlAsSb top and bottom reflectors and a bulk InGaAs active region.

  2. Relative roles of anthropogenic aerosols and greenhouse gases in land and oceanic monsoon changes during past 156 years in CMIP5 models

    Science.gov (United States)

    Zhang, Lei; Li, Tim

    2016-05-01

    Relative roles of anthropogenic aerosols (AAs) and greenhouse gases (GHGs) in land and oceanic monsoon changes during boreal summer over the period 1850-2005 in Coupled Model Intercomparison Project Phase 5 (CMIP5) models are explored. It is found that the GHG effect dominates rainfall trend over oceanic monsoon region. As a result, precipitation over western North Pacific (WNP) monsoon region and Intertropical Convergence Zone (ITCZ) over tropical eastern Pacific are strengthened through the so-called "richest-get-richer" mechanism. Over land monsoon region, GHG and AA effects are different over India and East Asia (EA). The two effects tend to offset each other over India, but the AA effect dominates over EA and induces a drying trend. The weakened effect of GHGs on EA is attributed to the large offset of thermodynamic and dynamic effects associated with GHGs. While the former tends to strengthen EA rainfall through increased moisture, the latter tends to decrease EA rainfall due to the strengthened WNP monsoon impact.

  3. Supplement Analysis for the Watershed Management Program Final EIS (DOE EIS /SA-156) - Upper Salmon River Anadromous Fish Passage Improvement Projects

    Energy Technology Data Exchange (ETDEWEB)

    Keller, Carl J. [Bonneville Power Administration (BPA), Portland, OR (United States)

    2004-07-13

    BPA proposes to fund IDFG to plan and complete construction of fish passage improvements and water conservation activities that are contained within IDFG’s Statement of Work (SOW) for the period 7/1/04 to 6/30/05. The funding request contained in their SOW is part of an ongoing IDFG effort to fund anadromous fish passage projects that fall outside the scope of the Mitchell Act. The proposed SOW activities fall within the following four categories: Phase I-Planning and Design (gather data, perform investigations, and exchange information; perform surveys and assessments to be compliant; survey project sites and perform engineering designs; perform contract and project management); Phase II-Construction and Implementation (procure materials and supplies, prepare contracts and solicit bids, plant native seedlings, complete capital improvements); Phase III-Operation and Maintenance (maintain office operations); and Phase IV- Monitoring and Evaluation (monitor and evaluate post-project effects, reporting). The SOW culminates with proposed construction of 18 capital improvement projects (Table 1 attached). The types of capital improvements include: screening gravity water diversions; consolidating and/or eliminating ditches; evaluating and screening pump diversions; evaluating and implementing water conservation activities; constructing screens along migration routes and rearing areas for hatchery and wild salmon; improving upstream and downstream passage for anadromous fish; and maximize benefits to aquatic habitat. Because each of the proposed projects in the SOW is still in the planning stages, the specifics of each still need to be completed.

  4. SXP 15.6: X-ray spectral and temporal properties of a newly discovered pulsar in the Small Magellanic Cloud

    Science.gov (United States)

    Vasilopoulos, G.; Zezas, A.; Antoniou, V.; Haberl, F.

    2017-10-01

    We report on the X-ray spectral and temporal properties of the Be/X-ray binary system XMMU J004855.5-734946 located in the Small Magellanic Cloud. The system was monitored by Swift/XRT during a moderate outburst in 2016 July, while an unanticipated Chandra target of opportunity observation was triggered when the luminosity of the system was greater than 1036 erg s-1 allowing a detailed study of X-ray properties of the systems. Specifically, its X-ray spectrum, as observed during the outburst, is well modelled by an absorbed power law (Γ = 0.58). Timing analysis of the collected photon events revealed coherent X-ray pulsations with a period of ˜15.64 s, thus confirming XMMU J004855.5-734946 as a high-mass X-ray binary pulsar. By analysing archival XMM-Newton observations, we determined the long-term spin period evolution of the neutron star, showing that the compact star has spun-up by \\dot{P}˜ -0.0028 s yr^{-1}. By modelling the X-ray pulsed emission as detected by Chandra, we set constraints on the inclination of the magnetic and rotation axis of the neutron star, as well to its compactness (i.e. (M/M⊙)/(R/km) = 0.095 ± 0.007).

  5. The charge pump PLL clock generator designed for the 1.56 ns bin size time-to-digital converter pixel array of the Timepix3 readout ASIC

    CERN Document Server

    Fu, Y et al.

    2014-01-01

    Timepix3 is a newly developed pixel readout chip which is expected to be operated in a wide range of gaseous and silicon detectors. It is made of 256×256 pixels organized in a square pixel-array with 55 µm pitch. Oscillators running at 640 MHz are distributed across the pixel-array and allow for a highly accurate measurement of the arrival time of a hit. This paper concentrates on a low-jitter phase locked loop (PLL) that is located in the chip periphery. This PLL provides a control voltage which regulates the actual frequency of the individual oscillators, allowing for compensation of process, voltage, and temperature variations.

  6. A fonte da juventude brasileira: eugenia e saúde nos primórdios do século XX - doi: 10.4025/dialogos.v9i2.156 The brazilian youth´s fountain: eugenics and health at turn of the 20th century - doi: 10.4025/dialogos.v9i2.156

    Directory of Open Access Journals (Sweden)

    André Mota

    2010-05-01

    Full Text Available O presente artigo traz como questão central a análise dos discursos médicos em torno da eugenia e do rejuvenescimento no início do século XX, no Brasil. Pretende sublinhar a participação brasileira num projeto de elevação racial e de construção de uma nação superior, quer por meio do controle dos chamados fracos e degenerados, quer pela possibilidade que se dizia abrir na reconstituição física, mental e moral de parte de sua população. Nesse sentido aqui se estabelece um diálogo com estudos atuais sobre a noção de saúde e as permanências históricas em torno da idéia de rejuvenescimento e da busca de um “novo homem” geneticamente modificado como símbolo da saúde da população.
    The central issue of the present article is the analysis of medical discourse on eugenics and rejuvenation at the turn of the 20th century in Brazil. It intends to emphasize Brazilian participation in a project involving racial elevation and the construction of a superior nation, either, by controlling the so-called weak and degenerates, or by reconstituting part of its population physically, mentally, and morally. In this sense, a dialogue is established herein with current studies on the notion of health and historical continuities with respect to the idea of rejuvenation and the search for a genetically modified ‘new man’ as a symbol of the entire population’s health.

  7. 敦煌壁画中的经架——兼议莫高窟第156窟前室室顶南侧壁画题材%The Sutra Stand in the Dunhuang Murals and the Subject Matter of the Southern Ceiling Mural of Cave 156

    Institute of Scientific and Technical Information of China (English)

    郭俊叶

    2011-01-01

    In some murals of the Dunhuang Grottoes, eminent monks or laymen are shown reading or preaching sutras from a small shelf-like stand. This stand has not come to the attention of earlier studies. Based on her analysis of sutras, Dunhuang documents and murals, and a the collections of the Shoso-in in Japan, the author suggests this object should be called a "sutra stand," and discusses its use and development. Based on this research, she also looked through all the different scenes and motifs of the sutra stand in the Mogao Grottoes. This study is valuable for judging the age and motif of Dunhuang murals.%一经架考辨 在敦煌莫高窟的一些表现高僧或俗人读经、讲经的壁画中,佛经有时被安置在一个架子形的小件器物上。此种器具应当称为经架,在前贤的研究中尚未对其有所关注。 《全唐诗》第554卷载有唐人项斯的一首五言律诗《寄坐夏僧》:“坐夏日偏长,知师在律堂。多因束带热,更忆剃头凉。苔色侵经架,松阴到簟床。

  8. 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.

  9. 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.

  10. 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

  11. Structural, spectral, dielectric and magnetic properties of Tb–Dy doped Li-Ni nano-ferrites synthesized via micro-emulsion route

    Energy Technology Data Exchange (ETDEWEB)

    Junaid, Muhammad, E-mail: junaid.malik95@yahoo.com [Department of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100 (Pakistan); Khan, Muhammad Azhar, E-mail: azhar.khan@iub.edu.pk [Department of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100 (Pakistan); Iqbal, F. [Department of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100 (Pakistan); Murtaza, Ghulam [Centre for Advanced Studies in Physics, Government College University, Lahore 54000 (Pakistan); Akhtar, Majid Niaz; Ahmad, Mukhtar [Department of Physics, COMSATS Institute of Information Technology, Lahore 54000 (Pakistan); Shakir, Imran [Deanship of scientific research, College of Engineering, King Saud University, PO Box 800, Riyadh 11421 (Saudi Arabia); Warsi, Muhammad Farooq [Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100 (Pakistan)

    2016-12-01

    Terbium (Tb) and dysprosium (Dy) doped lithium-nickel nano-sized ferrites (Li{sub 0.2}Ni{sub 0.8}Tb{sub 0.5x}Dy{sub 0.5x}Fe{sub 2−x}O{sub 4} where x=0.00−0.08) were prepared by micro-emulsion technique. The X-ray diffraction (XRD) patterns confirmed the single phase cubic spinel structure. The lattice constant was increased due to larger ionic radii of Tb{sup 3+} and Dy{sup 3+} cations. The crystallite size was found in the range 30–42 nm. The FTIR (Fourier transform infrared spectroscopy) spectra revealed two significant absorption bands (~400–600 cm{sup −1}) which indicate the formation of cubic spinel structure. The peaking behavior of dielectric parameters was observed beyond 1.5 GHz. The dielectric constant and dielectric loss were found to decrease by the increase of Tb–Dy contents and frequency. The doping of Tb and Dy in Li–Ni ferrites led to increase the coercive field (120–156 Oe). The smaller magnetic and dielectric parameters suggested the possible utility of these nano-materials in switching and microwave devices applications. - Highlights: • Li{sub 0.2}Ni{sub 0.8}Tb{sub 0.5x}Dy{sub 0.5x}Fe{sub 2-x}O{sub 4} ferrites were synthesized by micro-emulsion route. • Tb and Dy addition improves coercivity while decreased saturation magnetization. • These nanomaterials can be useful in microwave and switching devices applications.

  12. 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

  13. 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

  14. 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.

  15. 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.

  16. The -250G>A promoter variant in hepatic lipase associates with elevated fasting serum high-density lipoprotein cholesterol modulated by interaction with physical activity in a study of 16,156 Danish subjects

    DEFF Research Database (Denmark)

    Grarup, Niels; Andreasen, Camilla H; Andersen, Mette K;

    2008-01-01

    of variants in LIPC on metabolic traits and type 2 diabetes in a large sample of Danes. Because behavioral factors influence hepatic lipase activity, we furthermore examined possible gene-environment interactions in the population-based Inter99 study. DESIGN: The LIPC -250G>A (rs2070895) variant was genotyped...... Treatment in People with Screen Detected Diabetes in Primary Care study [0.038 mmol/liter per allele (95% CI 0.024-0.053); P = 2 x 10(-7)). The allelic effect on HDL-c was modulated by interaction with self-reported physical activity (P(interaction) = 0.002) because vigorous physically active homozygous A......-allele carriers had a 0.30 mmol/liter (95% CI 0.22-0.37) increase in HDL-c compared with homozygous G-allele carriers. CONCLUSIONS: We validate the association of LIPC promoter variation with fasting serum HDL-c and present data supporting an interaction with physical activity implying an increased effect on HDL...

  17. A 113 fs fiber laser operating at 1.56 mum using a cascadable film-type saturable absorber with P3HT-incorporated single-wall carbon nanotubes coated on polyamide.

    Science.gov (United States)

    Shohda, Fumio; Nakazawa, Masataka; Mata, Junji; Tsukamoto, Jun

    2010-04-26

    We successfully fabricated a cascadable film-type single-wall carbon nanotube (SWNT) saturable absorber coated on aromatic polyamide film, in which the saturable absorption effect can be controlled with the number of films. A conductive polymer P3HT (poly-3-hexylthiophene) was adopted to obtain a uniform SWNT solution. We applied saturable absorber films to a passively mode-locked fiber laser and successfully generated a 113 fs, 42 MHz pulse by inserting two film layers between fiber connectors in the cavity.

  18. Strontium-90 Biokinetics from Simulated Wound Intakes in Non-human Primates Compared with Combined Model Predictions from National Council on Radiation Protection and Measurements Report 156 and International Commission on Radiological Protection Publication 67.

    Science.gov (United States)

    Allen, Mark B; Brey, Richard R; Gesell, Thomas; Derryberry, Dewayne; Poudel, Deepesh

    2016-01-01

    This study had a goal to evaluate the predictive capabilities of the National Council on Radiation Protection and Measurements (NCRP) wound model coupled to the International Commission on Radiological Protection (ICRP) systemic model for 90Sr-contaminated wounds using non-human primate data. Studies were conducted on 13 macaque (Macaca mulatta) monkeys, each receiving one-time intramuscular injections of 90Sr solution. Urine and feces samples were collected up to 28 d post-injection and analyzed for 90Sr activity. Integrated Modules for Bioassay Analysis (IMBA) software was configured with default NCRP and ICRP model transfer coefficients to calculate predicted 90Sr intake via the wound based on the radioactivity measured in bioassay samples. The default parameters of the combined models produced adequate fits of the bioassay data, but maximum likelihood predictions of intake were overestimated by a factor of 1.0 to 2.9 when bioassay data were used as predictors. Skeletal retention was also over-predicted, suggesting an underestimation of the excretion fraction. Bayesian statistics and Monte Carlo sampling were applied using IMBA to vary the default parameters, producing updated transfer coefficients for individual monkeys that improved model fit and predicted intake and skeletal retention. The geometric means of the optimized transfer rates for the 11 cases were computed, and these optimized sample population parameters were tested on two independent monkey cases and on the 11 monkeys from which the optimized parameters were derived. The optimized model parameters did not improve the model fit in most cases, and the predicted skeletal activity produced improvements in three of the 11 cases. The optimized parameters improved the predicted intake in all cases but still over-predicted the intake by an average of 50%. The results suggest that the modified transfer rates were not always an improvement over the default NCRP and ICRP model values.

  19. The -250G>A promoter variant in hepatic lipase associates with elevated fasting serum high-density lipoprotein cholesterol modulated by interaction with physical activity in a study of 16,156 Danish subjects.

    Science.gov (United States)

    Grarup, Niels; Andreasen, Camilla H; Andersen, Mette K; Albrechtsen, Anders; Sandbaek, Annelli; Lauritzen, Torsten; Borch-Johnsen, Knut; Jørgensen, Torben; Schmitz, Ole; Hansen, Torben; Pedersen, Oluf

    2008-06-01

    Hepatic lipase plays a pivotal role in the metabolism of high-density lipoprotein (HDL) and low-density lipoprotein by involvement in reverse cholesterol transport and the formation of atherogenic small dense low-density lipoprotein. The objective was to investigate the impact of variants in LIPC on metabolic traits and type 2 diabetes in a large sample of Danes. Because behavioral factors influence hepatic lipase activity, we furthermore examined possible gene-environment interactions in the population-based Inter99 study. The LIPC -250G>A (rs2070895) variant was genotyped in the Inter99 study (n = 6070), the Anglo-Danish-Dutch Study of Intensive Treatment in People with Screen Detected Diabetes in Primary Care Denmark screening cohort of individuals with risk factors for undiagnosed type 2 diabetes (n = 8662), and in additional type 2 diabetic patients (n = 1,064) and glucose-tolerant control subjects (n = 360). In the Inter99 study, the A allele of rs2070895 associated with a 0.057 mmol/liter [95% confidence interval (CI) 0.039-0.075] increase in fasting serum HDL-cholesterol (HDL-c) (P = 8 x 10(-10)) supported by association in the Anglo-Danish-Dutch Study of Intensive Treatment in People with Screen Detected Diabetes in Primary Care study [0.038 mmol/liter per allele (95% CI 0.024-0.053); P = 2 x 10(-7)). The allelic effect on HDL-c was modulated by interaction with self-reported physical activity (P(interaction) = 0.002) because vigorous physically active homozygous A-allele carriers had a 0.30 mmol/liter (95% CI 0.22-0.37) increase in HDL-c compared with homozygous G-allele carriers. We validate the association of LIPC promoter variation with fasting serum HDL-c and present data supporting an interaction with physical activity implying an increased effect on HDL-c in vigorous physically active subjects carrying the -250 A allele. This interaction may have potential implications for public health and disease prevention.

  20. Analysis of Tank 13H (HTF-13-14-156, 157) Surface and Subsurface Supernatant Samples in Support of Enrichment Control, Corrosion Control and Sodium Aluminosilicate Formation Potential Programs

    Energy Technology Data Exchange (ETDEWEB)

    Oji, L. N. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL). Advanced Characterization and Processing

    2015-02-18

    The 2H Evaporator system includes mainly Tank 43H (feed tank) and Tank 38H (drop tank) with Tank 22H acting as the DWPF recycle receipt tank. The Tank 13H is being characterized to ensure that it can be transferred to the 2H evaporator. This report provides the results of analyses on Tanks 13H surface and subsurface supernatant liquid samples to ensure compliance with the Enrichment Control Program (ECP), the Corrosion Control Program and Sodium Aluminosilicate Formation Potential in the Evaporator. The U-235 mass divided by the total uranium averaged 0.00799 (0.799 % uranium enrichment) for both the surface and subsurface Tank 13H samples. This enrichment is slightly above the enrichment for Tanks 38H and 43H, where the enrichment normally ranges from 0.59 to 0.7 wt%. The U-235 concentration in Tank 13H samples ranged from 2.01E-02 to 2.63E-02 mg/L, while the U-238 concentration in Tank 13H ranged from 2.47E+00 to 3.21E+00 mg/L. Thus, the U-235/total uranium ratio is in line with the prior 2H-evaporator ECP samples. Measured sodium and silicon concentrations averaged, respectively, 2.46 M and 1.42E-04 M (3.98 mg/L) in the Tank 13H subsurface sample. The measured aluminum concentration in Tanks 13H subsurface samples averaged 2.01E-01 M.

  1. 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.

  2. 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.

  3. 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。

  4. 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。

  5. 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.

  6. 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.

  7. 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

  8. 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...

  9. 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.

  10. 47 CFR 80.369 - Distress, urgency, safety, call and reply frequencies.

    Science.gov (United States)

    2010-10-01

    ... general purpose, distress and safety DSC calls. (3) The frequency 156.800 MHz is the international... initially be made on 156.800 MHz (channel 16) or, if equipped with DSC, on 156.525 MHz (channel 70)....

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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.)

  16. 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...

  17. 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.

  18. 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.

  19. 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

  20. 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.

  1. 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.

  2. 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.

  3. 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

  4. 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.

  5. 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.

  6. 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.

  7. 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

  8. 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

  9. 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.

  10. 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.

  11. Topic-specific Infobuttons Reduce Search Time but their Clinical Impact is Unclear. A Review of: Del Fiol, Guilherme, Peter J. Haug, James J. Cimino, Scott P. Narus, Chuck Norlin, and Joyce A. Mitchell. ‚Effectiveness of Topic-specific Infobuttons: A Randomized Controlled Trial.‛ Journal of the American Medical Information Association 15.6 (2008: 752-9.

    Directory of Open Access Journals (Sweden)

    Shandra Protzko

    2009-06-01

    Full Text Available Objective – To assess whether infobutton links that direct users to specific content topics (‚topic links‛ are more effective in answering clinical questions than links that direct users to general overview content (‚nonspecific links‛.Design – Randomized control trial.Setting – Intermountain Healthcare, an integrated system of 21 hospitals and over 120 outpatient clinics located in Utah and southeastern Idaho.Subjects – Ninety clinicians and 3,729 infobutton sessions.Methods – To ensure comparable group composition, subjects were paired and randomly allocated to the study groups. Clinicians in the intervention group had access to topic links, while those in the control group had access to nonspecific links. All subjects at Intermountain Healthcare use a Web-based electronic medical record system (EMR called HELP2 Clinical Desktop with integrated infobutton links. An Infobutton Manager application defines the content topics and resources; in this case, Micromedex® (Thomson Healthcare, Englewood, CO provided access to the topic links. The medication order entry module, the most popular of the outpatient modules, was selected to test the two configurations of infobuttons. A focus group of seven HELP2 users aided the researchers in determining the most salient topics to be displayed as a part of the intervention group's user-interface. The study measured infobutton session duration, or time spent seeking information, the number of infobutton sessions conducted, and the outcome and impact of the information seeking. A post-session questionnaire displayed randomly in 30% of sessions measured outcome and impact. The study was conducted between May and November, 2007. This project was funded in part by the National Library of Medicine.Main Results – Subjects in the intervention group spent 17.4% less time seeking information than those in the control group (35.5 seconds vs. 43 seconds, p = 0.008. The intervention group used infobuttons 20.5% more often (22 sessions vs. 17.5 sessions, p = 0.21 than those in the control group, a difference that was not statistically significant. Twenty-five subjects answered the post-session survey at least once for a total of 115 (9.9% responses out of 1,161 possible sessions. The information seeking success rate was equally high in both groups (87.2% intervention vs. 89.4% control, p = .099. Subjects reported high positive clinical impact (i.e., decision enhancement or learning in 62% of successful sessions. Subjects conveyed a moderate or high level of frustration in 80% of responses associated with unsuccessful sessions.Conclusion – Topic links provide a slight advantage in the clinical decision-making process by reducing the amount of time spent searching. But while the session length difference between the control and intervention groups is statistically significant, it is less clear whether the difference is clinically meaningful. As previous studies have indicated, infobuttons are able to answer clinical medication questions with a high success rate. It is unclear whether topic links have a clinically significant impact, or rather, whether they are more effective than nonspecific links. The authors believe that the study results ‚should generalize to high-frequency, medication-related infobutton users in other institutions‛ (758.

  12. Religião, Teologia e Antropologia: o confronto entre Karl Barth e Ludwig Feuerbach (Religion, theology and anthropology: the confrontation between Karl Barth and Ludwig Feuerbach - DOI: 10.5752/P.2175-5841.2009v7n14p156

    Directory of Open Access Journals (Sweden)

    Adriani Milli Rodrigues

    2009-10-01

    Full Text Available Resumo O objetivo deste artigo é sintetizar os principais elementos do confronto entre o pensamento do teólogo reformado Karl Barth e o do filósofo alemão Ludwig Feuerbach com relação aos temas da religião, teologia e antropologia, que na abordagem de ambos apresentam conexão direta. Para tanto, este estudo inicia-se com uma panorâmica apresentação feuerbachiana da interpretação antropológica da teologia e religião, particularmente a partir de sua obra mais famosa “A Essência do Cristianismo”, que conduz às suas conclusões de ataque à teologia e re-significação da função da religião. A seguir, a reação de Barth às idéias de Feuerbach são contempladas, a partir de sua visão teológica teocêntrica. Nesse sentido, há a exposição de duas fases da reação barthiana ao pensamento de Feuerbach. Na primeira delas Barth apresenta certos elementos de concordância e aproveitamento das noções feuerbachinas, ao passo que na segunda fase a discordância é total. Em suas conclusões o artigo aponta que o debate entre Barth e Feuerbach gira em torno da idéia de reducionismo teológico ou religioso, tão presente nos debates epistemológicos dos estudos em Ciências da Religião.  Palavras-chave: Barth; Feuerbach; teologia; religião; antropologia. Abstract This article aims to summarize the main elements of the confrontation between the reformed theologian Karl Barth’s conception and the German philosopher Ludwig Feuerbach’s thought concerning religion, theology and anthropology, which maintain straight connection in both approaches. For so much, this study begins with a feuerbachian panoramic presentation of the anthropological interpretation of theology and religion, particularly from his most famous work “The Essence of the Christianity”, which leads to his conclusions of attack upon theology and a re-signification of the function of religion. Thereafter, Barth’s reaction to Feuerbach’s ideas is discussed from his theocentric theological perspective. In this sense, there is an exposure of two phases of barthian reaction to Feuerbach. Firstly Barth presents topics of agreement with feuerbachian notions, while in the second phase the disagreement is total. Among the article’s conclusions there is an indication that the Barth-Feuerbach debate deals with religious or theological reductionism, usually present in epistemological discussions on Religious Studies. Key words: Barth; Feuerbach; theology; religion; anthropology.

  13. 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...

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. 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.)

  20. 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.