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Sample records for dysprosium 165

  1. 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.

  2. 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.

  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. 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.

  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. 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%.

  17. 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

  18. 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.

  19. 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.

  20. 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.

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 40 CFR 165.1 - Scope.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Scope. 165.1 Section 165.1 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS PESTICIDE MANAGEMENT AND DISPOSAL General § 165.1 Scope. The part 165 regulations establish standards and requirements...

  13. 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)

  14. 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.

  15. 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.

  16. 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.

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

    Directory of Open Access Journals (Sweden)

    Qian Yong

    2009-01-01

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

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

    CERN Document Server

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

    2016-01-01

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

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

    Institute of Scientific and Technical Information of China (English)

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

    2005-01-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-12-31

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

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

    Directory of Open Access Journals (Sweden)

    Xiaomei Zhuang

    2010-11-01

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

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

    OpenAIRE

    Górecki, Wojciech; Rzążewski, Kazimierz

    2016-01-01

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

  3. 33 CFR 165.2030 - Pacific Area.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Pacific Area. 165.2030 Section 165.2030 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED... Vessels § 165.2030 Pacific Area. (a) This section applies to any vessel or person in the navigable waters...

  4. 21 CFR 165.110 - Bottled water.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Bottled water. 165.110 Section 165.110 Food and... CONSUMPTION BEVERAGES Requirements for Specific Standardized Beverages § 165.110 Bottled water. (a) Identity—(1) Description. Bottled water is water that is intended for human consumption and that is sealed...

  5. 32 CFR 165.5 - Responsibilities.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Responsibilities. 165.5 Section 165.5 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE DEFENSE CONTRACTING RECOUPMENT OF NONRECURRING COSTS ON SALES OF U.S. ITEMS § 165.5 Responsibilities. (a) The Comptroller of the Department...

  6. 21 CFR 73.165 - Ferrous lactate.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 1 2010-04-01 2010-04-01 false Ferrous lactate. 73.165 Section 73.165 Food and... ADDITIVES EXEMPT FROM CERTIFICATION Foods § 73.165 Ferrous lactate. (a) Identity. The color additive ferrous lactate is the ferrous lactate defined in § 184.1311 of this chapter. (b) Specifications. Ferrous lactate...

  7. 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.

  8. 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

  9. 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.

  10. Clinical trial of {sup 165}Dy-HMA and {sup 166}Ho-CHICO in the treatment of Rheumatoid knee synovitis

    Energy Technology Data Exchange (ETDEWEB)

    Kim, S. Y.; Yoo, D. H.; Bae, S. C.; Jun, J. B. [Hanyang University, Seoul (Korea, Republic of); Lim, S. M.; Hong, S. W.; Lee, S. Y.; Cheon, D. G.; Kim, S. J. [Korea Cancer Center Hospital, Seoul (Korea, Republic of)

    1997-07-01

    The untreated, chronic synovial inflammation leads to pannus formation and eventual destruction of the articular cartilage. In cases where medical therapy was unsuccessful, surgical or radiation synovectomy is necessary especially in the knee joints. The advantages of radiation synovectomy over surgical synovectomy are (1) greater destruction of diseased synovium, (2) reduced potential for blood clots and infection, (3) no requirement for anesthesia, and (4) less costly and less time consuming. Recently KAERI developed Dy-165 HMA, which was characterized by the absence of iron and a higher concentration of dysprosium. And then more recently KAERI also developed {sup 166}Ho-CHICO, which was characterized by relatively longer half-life(26.8 hr), more biological due to organic nature of chitosan, more even spatial distribution due to colloidal solution and more absorbable to synovium than Dy-165 HMA. We studied to evaluate the efficacy and safety of radiation synovectomy with Dy-165 HMA and {sup 166}Ho-CHICO in chronic rheumatoid synovitis with knee. The present study indicates that the Dy-165 HMA and {sup 166}Ho-CHICO are an effective and safe agent for radiation synovectomy. But further large scaled long-term follow up study and controlled study with steroid only are required. 15 refs. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1984-12-01

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

  12. 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.

  13. Manganese-induced turnover of TMEM165.

    Science.gov (United States)

    Potelle, Sven; Dulary, Eudoxie; Climer, Leslie; Duvet, Sandrine; Morelle, Willy; Vicogne, Dorothée; Lebredonchel, Elodie; Houdou, Marine; Spriet, Corentin; Krzewinski-Recchi, Marie-Ange; Peanne, Romain; Klein, André; de Bettignies, Geoffroy; Morsomme, Pierre; Matthijs, Gert; Marquardt, Thorsten; Lupashin, Vladimir; Foulquier, François

    2017-04-19

    TMEM165 deficiencies lead to one of the congenital disorders of glycosylation (CDG), a group of inherited diseases where the glycosylation process is altered. We recently demonstrated that the Golgi glycosylation defect due to TMEM165 deficiency resulted from a Golgi manganese homeostasis defect and that Mn(2+) supplementation was sufficient to rescue normal glycosylation. In the present paper, we highlight TMEM165 as a novel Golgi protein sensitive to manganese. When cells were exposed to high Mn(2+) concentrations, TMEM165 was degraded in lysosomes. Remarkably, while the variant R126H was sensitive upon manganese exposure, the variant E108G, recently identified in a novel TMEM165-CDG patient, was found to be insensitive. We also showed that the E108G mutation did not abolish the function of TMEM165 in Golgi glycosylation. Altogether, the present study identified the Golgi protein TMEM165 as a novel Mn(2+)-sensitive protein in mammalian cells and pointed to the crucial importance of the glutamic acid (E108) in the cytosolic ELGDK motif in Mn(2+)-induced degradation of TMEM165. © 2017 The Author(s); published by Portland Press Limited on behalf of the Biochemical Society.

  14. 21 CFR 137.165 - Enriched flour.

    Science.gov (United States)

    2010-04-01

    ... riboflavin, 24 milligrams of niacin, 0.7 milligrams of folic acid, and 20 milligrams of iron. (b) It may... calcium or wheat germ is excluded in calculating ash content. (f) All ingredients from which the food is... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Enriched flour. 137.165 Section 137.165 Food...

  15. 21 CFR 165.3 - Definitions.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Definitions. 165.3 Section 165.3 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN... usually designated by a common container code or marking, or in the absence of any common container...

  16. 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.

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

    Science.gov (United States)

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

    2016-02-01

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

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

    Science.gov (United States)

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

    2012-06-07

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2015-03-01

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

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

    Science.gov (United States)

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

    2016-08-15

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2016-01-22

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

  2. Dicty_cDB: VHP165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available VH (Link to library) VHP165 (Link to dictyBase) - - - Contig-U15713-1 VHP165P (Link to Original site) VHP16...5F 583 VHP165Z 659 VHP165P 1222 - - Show VHP165 Library VH (Link to library) Clone ID VHP16...e URL http://dictycdb.biol.tsukuba.ac.jp/CSM/VH/VHP1-C/VHP165Q.Seq.d/ Representative seq. ID VHP16...5P (Link to Original site) Representative DNA sequence >VHP165 (VHP165Q) /CSM/VH/VHP1-C/VHP16...equences producing significant alignments: (bits) Value VHP165 (VHP165Q) /CSM/VH/VHP1-C/VHP16

  3. 40 CFR 300.165 - OSC reports.

    Science.gov (United States)

    2010-07-01

    ... Responsibility and Organization for Response § 300.165 OSC reports. (a) As requested by the NRT or RRT, the OSC... situation as it developed, the actions taken, the resources committed, and the problems encountered....

  4. 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.

  5. 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.

  6. 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.

  7. Dicty_cDB: CHP165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available CH (Link to library) CHP165 (Link to dictyBase) - - - Contig-U16475-1 CHP165P (Link to Original site) CHP...165F 567 CHP165Z 732 CHP165P 1279 - - Show CHP165 Library CH (Link to library) Clone ID CHP...e URL http://dictycdb.biol.tsukuba.ac.jp/CSM/CH/CHP1-C/CHP165Q.Seq.d/ Representative seq. ID CHP...165P (Link to Original site) Representative DNA sequence >CHP165 (CHP165Q) /CSM/CH/CHP1-C/CHP...l*ltninpkt*fikscivlil xfx Homology vs CSM-cDNA Score E Sequences producing significant alignments: (bits) Value CHP165 (CHP

  8. 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.

  9. 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...

  10. 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.

  11. Dicty_cDB: SLB165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SL (Link to library) SLB165 (Link to dictyBase) - - - Contig-U16455-1 SLB165Z (Link... to Original site) - - SLB165Z 708 - - - - Show SLB165 Library SL (Link to library) Clone ID SLB165 (Link to...ycdb.biol.tsukuba.ac.jp/CSM/SL/SLB1-C/SLB165Q.Seq.d/ Representative seq. ID SLB16...5Z (Link to Original site) Representative DNA sequence >SLB165 (SLB165Q) /CSM/SL/SLB1-C/SLB165Q.Seq.d/ XXXXX... Dictyostelium discoideum slug cDNA, clone SLE193. 1298 0.0 1 ( AU034146 ) Dictyostelium discoideum slug cDNA, clone SLB

  12. Dicty_cDB: SLE165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SL (Link to library) SLE165 (Link to dictyBase) - - - Contig-U16510-1 SLE165Z (Link... to Original site) - - SLE165Z 679 - - - - Show SLE165 Library SL (Link to library) Clone ID SLE165 (Link to...ycdb.biol.tsukuba.ac.jp/CSM/SL/SLE1-C/SLE165Q.Seq.d/ Representative seq. ID SLE16...5Z (Link to Original site) Representative DNA sequence >SLE165 (SLE165Q) /CSM/SL/SLE1-C/SLE165Q.Seq.d/ XXXXX... /CSM/SL/SLH3-A/SLH314Q.Seq.d/ 654 0.0 SLG594 (SLG594Q) /CSM/SL/SLG5-D/SLG594Q.Seq.d/ 654 0.0 SLE435 (SLE435Q) /CSM/SL/SLE4-B/SLE

  13. 50 CFR 648.165 - Framework specifications.

    Science.gov (United States)

    2010-10-01

    ... management measures are based allows for adequate time to publish a proposed rule, and whether regulations... recommended management measures should be published first as a proposed rule, the measures will be published... 648.165 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND...

  14. 32 CFR 165.3 - Definitions.

    Science.gov (United States)

    2010-07-01

    ... Defense. Production costs for the foreign military sales program and known direct commercial sales... NONRECURRING COSTS ON SALES OF U.S. ITEMS § 165.3 Definitions. (a) Cost pool. Represents the total cost to be... cost pool comprises costs described in paragraph (e), of this section. (b) Foreign military sale....

  15. 33 CFR 165.8 - Geographic coordinates.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Geographic coordinates. 165.8... Geographic coordinates. Geographic coordinates expressed in terms of latitude or longitude, or both, are not... 1983 (NAD 83), unless such geographic coordinates are expressly labeled NAD 83. Geographic...

  16. 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

  17. 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.

  18. 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.

  19. 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.)

  20. 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.

  1. 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.

  2. 33 CFR 165.1407 - Security Zones; Oahu, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zones; Oahu, HI. 165.1407 Section 165.1407 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Navigation Areas and Limited Access Areas Fourteenth Coast Guard District § 165.1407 Security Zones; Oahu,...

  3. 49 CFR 37.165 - Lift and securement use.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Lift and securement use. 37.165 Section 37.165... DISABILITIES (ADA) Provision of Service § 37.165 Lift and securement use. (a) This section applies to public... with disabilities with the use of securement systems, ramps and lifts. If it is necessary for the...

  4. 22 CFR 16.5 - Relationship to other remedies.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Relationship to other remedies. 16.5 Section 16.5 Foreign Relations DEPARTMENT OF STATE PERSONNEL FOREIGN SERVICE GRIEVANCE SYSTEM § 16.5 Relationship to other remedies. (a) A grievant may not file a grievance under these procedures if the grievant...

  5. 7 CFR 1427.165 - Eligible seed cotton.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Eligible seed cotton. 1427.165 Section 1427.165... OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS COTTON Recourse Seed Cotton Loans § 1427.165 Eligible seed cotton. (a) Seed cotton pledged as collateral for a loan must be tendered to CCC by...

  6. 38 CFR 17.165 - Emergency outpatient dental treatment.

    Science.gov (United States)

    2010-07-01

    ... dental treatment. 17.165 Section 17.165 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS MEDICAL Dental Services § 17.165 Emergency outpatient dental treatment. When outpatient emergency dental care is provided, as a humanitarian service, to individuals who have no established eligibility...

  7. 27 CFR 22.165 - Photographic copies of records.

    Science.gov (United States)

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Photographic copies of records. 22.165 Section 22.165 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE... Transactions § 22.165 Photographic copies of records. (a) General. Permittees may record, copy, or...

  8. 29 CFR 1915.165 - Ship's deck machinery.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 7 2010-07-01 2010-07-01 false Ship's deck machinery. 1915.165 Section 1915.165 Labor... (CONTINUED) OCCUPATIONAL SAFETY AND HEALTH STANDARDS FOR SHIPYARD EMPLOYMENT Ship's Machinery and Piping Systems § 1915.165 Ship's deck machinery. (a) Before work is performed on the anchor windlass or any...

  9. 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.

  10. Electric-dipole transitions in 165Er

    Institute of Scientific and Technical Information of China (English)

    WANG Shi-Tao; ZHOU Xiao-Hong; ZHANG Yu-Hu; ZHENG Yong; LIU Min-Liang; MA Fei; HU Jun; CHEN Liang; ZHANG Xin; ZHANG Ning-Tao; ZHU Li-Hua; WU Xiao-Guang; LI Guang-Sheng

    2009-01-01

    High-spin states of 165Er were studied using the 160Gd(9Be, 4n)reaction at beam energies of 42 and 45 MeV. The previously known bands based on the γ5/2-[523] and γ5/2+ [642] configurations have been extended to high-spin states. Electric-dipole transitions linking these two opposite parity bands were observed. Relatively large B(E1) values have been extracted experimentally and were attributed to octupole softness.

  11. Reference: 165 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 165 http://metadb.riken.jp/db/SciNetS_ria224i/cria224u4ria224u15681659i Ross Simon et al. 2005 Fe...lasmic MAPs throughout development. dsRNA interference and knockout (KO) plant lines targeting either MAP1A ...the specific drug fumagillin impaired plant development, with particularly strong effects on the root system...gradient of developmentally abnormal plants, but the effects on the root system w... and animals, as a complete block of either MAP-type activity does not cause any visible molecular or phenotypic effe

  12. 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.

  13. 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

  14. 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

  15. Thrombocytosis: a retrospective study of 165 dogs.

    Science.gov (United States)

    Neel, Jennifer A; Snyder, Laura; Grindem, Carol B

    2012-06-01

    Thrombocytosis has been associated with various conditions, including inflammation, neoplasia, iron deficiency, splenectomy, and drug administration. The aim of this study was to characterize diseases and conditions associated with thrombocytosis in dogs. In this retrospective study, dogs with thrombocytosis (platelet count > 600 × 10(3) /μL) and complete medical records during a 1-year period were included, and breed, sex, age, CBC results, alkaline phosphatase and gamma-glutamyltransferase activities in some dogs, administration of glucocorticoids or vincristine, and primary diagnosis were evaluated. Thrombocytosis was found in 240 of 5342 dogs (4.6%), and 165 (3.1%) met inclusion criteria. Thrombocytosis was secondary in all dogs, and underlying diseases and conditions (n,%) were neoplasia (56, 33.9%), inflammation (55, 33.3%), miscellaneous disorders (26, 15.8%), neoplasia plus a second disease (13, 7.9%), endocrine diseases (8, 4.8%), and multiple diseases (7, 4.2%). In dogs with neoplasia, carcinomas (24) and round cell neoplasms (20), especially lymphoma and mast cell tumor, were the most frequent tumors. Inflammatory disorders consisted of immune-mediated disorders (11), neurologic diseases (8), infectious diseases (6), allergic disease (5), orthopedic diseases (4), gastrointestinal diseases (4), and miscellaneous conditions (17). Of the 165 dogs, 73 (44.2%) had received glucocorticoids (55) or vincristine (18) Marked (850-969 × 10(3) platelets/μL) or extreme ( ≥ 970 × 10(3) platelets/μL) thrombocytosis occurred in 24 (14.5%) dogs; 12 (50.0%) had neoplasia. Thromboembolism occurred in 13 (7.9%) dogs. Thrombocytosis in dogs occurred most frequently secondary to neoplastic and inflammatory diseases and was commonly associated with glucocorticoid and vincristine administration. Thromboembolic complications occurred in a small number of patients. Marked or extreme thrombocytosis was more likely to occur with neoplasia than with other conditions. © 2012

  16. Analysis list: ZNF165 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ZNF165 Breast + hg19 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/target/ZNF165....1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/target/ZNF165.5.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/target/ZNF1...65.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/colo/ZNF165.Breast.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/colo/Breast.gml ...

  17. 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).

  18. 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.

  19. 34 CFR 668.165 - Notices and authorizations.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false Notices and authorizations. 668.165 Section 668.165... and authorizations. (a) Notices. (1) Before an institution disburses title IV, HEA program funds for... purposes of this section— (i) Affirmative confirmation is a process under which an institution...

  20. 14 CFR 16.5 - Separation of functions.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Separation of functions. 16.5 Section 16.5... functions. (a) Proceedings under this part, including hearings under subpart F of this part, will be... prosecutorial functions in a proceeding under this part will not, in that case or a factually related...

  1. 40 CFR 68.165 - Offsite consequence analysis.

    Science.gov (United States)

    2010-07-01

    ... (toxics only); (10) Topography (toxics only); (11) Distance to endpoint; (12) Public and environmental... 40 Protection of Environment 15 2010-07-01 2010-07-01 false Offsite consequence analysis. 68.165 Section 68.165 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS...

  2. 33 CFR 165.1408 - Security Zones; Maui, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zones; Maui, HI. 165... Navigation Areas and Limited Access Areas Fourteenth Coast Guard District § 165.1408 Security Zones; Maui, HI... Harbor, Maui, HI or within 3 nautical miles seaward of the Kahului Harbor COLREGS DEMARCATION (See 33...

  3. 49 CFR 192.165 - Compressor stations: Liquid removal.

    Science.gov (United States)

    2010-10-01

    ... TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Design of Pipeline Components § 192.165 Compressor stations: Liquid removal. (a) Where entrained vapors in gas may liquefy under... 49 Transportation 3 2010-10-01 2010-10-01 false Compressor stations: Liquid removal. 192.165...

  4. 14 CFR 21.165 - Responsibility of holder.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Responsibility of holder. 21.165 Section 21... CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS Production Certificates § 21.165 Responsibility of holder. The holder of a production certificate shall— (a) Maintain the quality control system in conformity with...

  5. 21 CFR 172.165 - Quaternary ammonium chloride combination.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 3 2010-04-01 2009-04-01 true Quaternary ammonium chloride combination. 172.165... HUMAN CONSUMPTION Food Preservatives § 172.165 Quaternary ammonium chloride combination. The food additive, quaternary ammonium chloride combination, may be safely used in food in accordance with...

  6. 40 CFR 165.25 - Nonrefillable container standards.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Nonrefillable container standards. 165... PROGRAMS PESTICIDE MANAGEMENT AND DISPOSAL Nonrefillable Container Standards: Container Design and Residue Removal § 165.25 Nonrefillable container standards. (a) What Department of Transportation (DOT)...

  7. 40 CFR 165.45 - Refillable container standards.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Refillable container standards. 165.45... PESTICIDE MANAGEMENT AND DISPOSAL Refillable Container Standards: Container Design § 165.45 Refillable container standards. (a) What Department of Transportation (DOT) standards do my refillable containers...

  8. 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.

  9. 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.

  10. 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.)

  11. 28 CFR 16.5 - Timing of responses to requests.

    Science.gov (United States)

    2010-07-01

    ... INFORMATION Procedures for Disclosure of Records Under the Freedom of Information Act § 16.5 Timing of... knowledge and belief, explaining in detail the basis for requesting expedited processing. For example, a...

  12. 47 CFR 90.165 - Procedures for mutually exclusive applications.

    Science.gov (United States)

    2010-10-01

    ... SPECIAL RADIO SERVICES PRIVATE LAND MOBILE RADIO SERVICES Applications and Authorizations Special Rules Governing Facilities Used to Provide Commercial Mobile Radio Services § 90.165 Procedures for mutually exclusive applications. Mutually exclusive commercial mobile radio service applications are processed...

  13. 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.

  14. 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.

  15. 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).

  16. 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.

  17. 26 CFR 1.165-11 - Election in respect of losses attributable to a disaster.

    Science.gov (United States)

    2010-04-01

    ... disaster. 1.165-11 Section 1.165-11 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY... Corporations § 1.165-11 Election in respect of losses attributable to a disaster. (a) In general. Section 165(h) provides that a taxpayer who has sustained a disaster loss which is allowable as a deduction under...

  18. 33 CFR 165.163 - Safety Zones; Port of New York/New Jersey Fleet Week.

    Science.gov (United States)

    2010-07-01

    ... Wednesday following Memorial Day. (c) Regulations. (1) The general regulations contained in 33 CFR 165.23.../New Jersey Fleet Week. 165.163 Section 165.163 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.163 Safety Zones; Port of New York/New Jersey Fleet Week. (a) The following areas are...

  19. 33 CFR 165.935 - Safety Zone, Milwaukee Harbor, Milwaukee, WI.

    Science.gov (United States)

    2010-07-01

    ... or political subdivision thereof. (c) Regulations. (1) The general regulations in 33 CFR 165.23 apply... Federal Register as practicable, in accordance with 33 CFR 165.7(a). Such means of notification may also..., Milwaukee, WI. 165.935 Section 165.935 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF...

  20. 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.

  1. Phenotype abnormality: 165 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available 165 http://metadb.riken.jp/db/SciNetS_ria224i/cria224u1ria224u671i decreased effic...iency in organ named whole plant during process named auxin transport ... whole plant ... decreased efficiency ...

  2. Image collection: 165 [Togo Picture Gallery[Archive

    Lifescience Database Archive (English)

    Full Text Available 165 Trichosurus_vulpecula_NL.png フクロギツネ Trichosurus vulpecula Trichosurus vulpecula 9337 生物アイコン,脊索動物門,脊椎動物亜門,哺乳綱,獣亜綱,後獣下綱,

  3. 33 CFR 165.1410 - Security Zones; Kauai, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zones; Kauai, HI. 165..., HI. (a) Location. The following areas, from the surface of the water to the ocean floor, are security... Nawiliwili Harbor, Kauai, HI or within 3 nautical miles seaward of the Nawiliwili Harbor COLREGS...

  4. 33 CFR 165.1409 - Security Zones; Hawaii, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zones; Hawaii, HI. 165..., HI. (a) Location. The following areas, from the surface of the water to the ocean floor, are security..., Hawaii, HI or within 3 nautical miles seaward of the Hilo Harbor COLREGS DEMARCATION (See 33 CFR...

  5. 18 CFR 367.1650 - Account 165, Prepayments.

    Science.gov (United States)

    2010-04-01

    ... ACT Balance Sheet Chart of Accounts Current and Accrued Assets § 367.1650 Account 165, Prepayments..., Prepayments. 367.1650 Section 367.1650 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY REGULATIONS UNDER THE PUBLIC UTILITY HOLDING COMPANY ACT OF 2005,...

  6. 20 CFR 401.165 - Statistical and research activities.

    Science.gov (United States)

    2010-04-01

    ... to the Social Security program or beneficiaries; and (3) The recipient will keep the information as a system of statistical records, will follow appropriate safeguards, and agrees to our on-site inspection... Section 401.165 Employees' Benefits SOCIAL SECURITY ADMINISTRATION PRIVACY AND DISCLOSURE OF OFFICIAL...

  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. Identical gamma-vibrational bands in {sup 165}Ho

    Energy Technology Data Exchange (ETDEWEB)

    Radford, D.C.; Galindo-Uribarri, A.; Janzen, V.P. [Chalk River Labs., Ontario (Canada)] [and others

    1996-12-31

    The structure of {sup 165}Ho at moderate spins has been investigated by means of Coulomb excitation. Two {gamma}-vibrational bands (K{sup {pi}} = 11/2{sup {minus}} and K{sup {pi}} = 3/2{sup {minus}}) are observed, with very nearly identical in-band {gamma}-ray energies. Gamma-ray branching ratios are analyzed to extract information on Coriolis mixing, and the role of the K quantum number in identical bands is discussed.

  9. 33 CFR 165.808 - Corpus Christi Ship Channel, Corpus Christi, TX, safety zone.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Corpus Christi Ship Channel, Corpus Christi, TX, safety zone. 165.808 Section 165.808 Navigation and Navigable Waters COAST GUARD... § 165.808 Corpus Christi Ship Channel, Corpus Christi, TX, safety zone. (a) The following areas...

  10. 33 CFR 165.530 - Safety Zone: Cape Fear and Northeast Cape Fear Rivers, NC.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone: Cape Fear and Northeast Cape Fear Rivers, NC. 165.530 Section 165.530 Navigation and Navigable Waters COAST GUARD... § 165.530 Safety Zone: Cape Fear and Northeast Cape Fear Rivers, NC. (a) Location. The following area is...

  11. 33 CFR 165.T01-0542 - Safety Zones: Neptune Deepwater Port, Atlantic Ocean, Boston, MA.

    Science.gov (United States)

    2010-07-01

    ... Port, Atlantic Ocean, Boston, MA. 165.T01-0542 Section 165.T01-0542 Navigation and Navigable Waters... Guard District § 165.T01-0542 Safety Zones: Neptune Deepwater Port, Atlantic Ocean, Boston, MA. (a) Location. The following areas are safety zones: All navigable waters of the United States within a...

  12. 33 CFR 165.113 - Security Zone: Dignitary arrival/departure Logan International Airport, Boston, MA

    Science.gov (United States)

    2010-07-01

    .../departure Logan International Airport, Boston, MA 165.113 Section 165.113 Navigation and Navigable Waters... Guard District § 165.113 Security Zone: Dignitary arrival/departure Logan International Airport, Boston... governments arriving at, or departing from, Logan International Airport and as determined by the transit...

  13. 33 CFR 165.508 - Security Zone; Georgetown Channel, Potomac River, Washington, DC.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Georgetown Channel, Potomac River, Washington, DC. 165.508 Section 165.508 Navigation and Navigable Waters COAST GUARD... § 165.508 Security Zone; Georgetown Channel, Potomac River, Washington, DC. (a) Definitions. (1)...

  14. 33 CFR 165.115 - Safety and Security Zones; Pilgrim Nuclear Power Plant, Plymouth, Massachusetts.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety and Security Zones; Pilgrim Nuclear Power Plant, Plymouth, Massachusetts. 165.115 Section 165.115 Navigation and Navigable... Coast Guard District § 165.115 Safety and Security Zones; Pilgrim Nuclear Power Plant,...

  15. 33 CFR 165.1155 - Security Zone; Diablo Canyon Nuclear Power Plant, Avila Beach, California.

    Science.gov (United States)

    2010-07-01

    ... Nuclear Power Plant, Avila Beach, California. 165.1155 Section 165.1155 Navigation and Navigable Waters... Coast Guard District § 165.1155 Security Zone; Diablo Canyon Nuclear Power Plant, Avila Beach... surface to bottom, within a 2,000 yard radius of Diablo Canyon Nuclear Power Plant centered at position...

  16. 21 CFR 606.165 - Distribution and receipt; procedures and records.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 7 2010-04-01 2010-04-01 false Distribution and receipt; procedures and records. 606.165 Section 606.165 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) BIOLOGICS CURRENT GOOD MANUFACTURING PRACTICE FOR BLOOD AND BLOOD COMPONENTS Records and Reports § 606.165 Distribution...

  17. 33 CFR 165.1121 - Security Zone: Fleet Supply Center Industrial Pier, San Diego, CA.

    Science.gov (United States)

    2010-07-01

    ... Guard District § 165.1121 Security Zone: Fleet Supply Center Industrial Pier, San Diego, CA. (a... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone: Fleet Supply Center Industrial Pier, San Diego, CA. 165.1121 Section 165.1121 Navigation and Navigable Waters COAST...

  18. 33 CFR 165.1403 - Security Zones; Tinian, Commonwealth of the Northern Mariana Islands.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zones; Tinian, Commonwealth of the Northern Mariana Islands. 165.1403 Section 165.1403 Navigation and Navigable Waters COAST... Guard District § 165.1403 Security Zones; Tinian, Commonwealth of the Northern Mariana Islands. (a...

  19. 33 CFR 165.120 - Safety Zone: Chelsea River, Boston Inner Harbor, Boston, MA.

    Science.gov (United States)

    2010-07-01

    ..., Boston Inner Harbor, Boston, MA. 165.120 Section 165.120 Navigation and Navigable Waters COAST GUARD... § 165.120 Safety Zone: Chelsea River, Boston Inner Harbor, Boston, MA. (a) Location. The following area... downstream of the Chelsea Street Bridge on the Chelsea, MA side of the Chelsea River—hereafter referred to...

  20. 33 CFR 165.T09-0124 - Safety Zone; St. Louis River, Tallas Island, Duluth, MN.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone; St. Louis River, Tallas Island, Duluth, MN. 165.T09-0124 Section 165.T09-0124 Navigation and Navigable Waters COAST GUARD... § 165.T09-0124 Safety Zone; St. Louis River, Tallas Island, Duluth, MN. (a) Location. The following area...

  1. 40 CFR 7.165 - Special benefits for children and the elderly.

    Science.gov (United States)

    2010-07-01

    ... elderly. 7.165 Section 7.165 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL... Discrimination Prohibited on the Basis of Age § 7.165 Special benefits for children and the elderly. If a recipient operating a program which serves the elderly or children in addition to persons of other...

  2. 33 CFR 165.767 - Security Zone; Manbirtee Key, Port of Manatee, Florida.

    Science.gov (United States)

    2010-07-01

    ..., Port of Manatee, Florida. 165.767 Section 165.767 Navigation and Navigable Waters COAST GUARD... § 165.767 Security Zone; Manbirtee Key, Port of Manatee, Florida. (a) Regulated area. The following area... extending 500 yards from the island's shoreline, in all directions, not to include the Port Manatee...

  3. 33 CFR 165.T08-290 - Safety Zone; Gulf of Mexico-Johns Pass, Florida.

    Science.gov (United States)

    2010-07-01

    ... Pass, Florida. 165.T08-290 Section 165.T08-290 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.T08-290 Safety Zone; Gulf of Mexico—Johns Pass, Florida. (a) Regulated area. The Coast Guard is...'s Pass Bridge, that includes all the waters from surface to bottom, within a 100-yard radius of...

  4. 33 CFR 165.507 - Security Zone; Chesapeake Bay, between Sandy Point and Kent Island, MD.

    Science.gov (United States)

    2010-07-01

    ... south (eastbound) span of the William P. Lane Jr. Memorial Bridge, from the western shore at Sandy Point..., between Sandy Point and Kent Island, MD. 165.507 Section 165.507 Navigation and Navigable Waters COAST... Guard District § 165.507 Security Zone; Chesapeake Bay, between Sandy Point and Kent Island, MD. (a...

  5. Signature splitting and quasiparticle alignment in the yrast band of Ta-165

    NARCIS (Netherlands)

    Roux, DG; Fetea, MS; Gueorguieva, E; Babu, BRS; Newman, RT; Lawrie, JJ; Fearick, R; Aschman, DG; Beetge, R; Benatar, M; Mabala, GK; Mullins, SM; Murray, SHT; Naguleswaran, S; Rigollet, C; Sharpey-Schafer, JF; Smit, FD; Whittaker, WJ

    Excited states in Ta-165 were populated in the Nd-142(Al-27,4n)Ta-165 and Pr-141(Si-28,4n)Ta-165 reactions and investigated using the AFRODITE array. The yrast rotational decay sequence up to spin 53/2(-) is identified and assigned to the [514]9/2(-) configuration. The nuclear shape is investigated

  6. 33 CFR 165.701 - Vicinity, Kennedy Space Center, Merritt Island, Florida-security zone.

    Science.gov (United States)

    2010-07-01

    ... § 165.701 Vicinity, Kennedy Space Center, Merritt Island, Florida—security zone. (a) The water, land... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Vicinity, Kennedy Space Center, Merritt Island, Florida-security zone. 165.701 Section 165.701 Navigation and Navigable Waters COAST...

  7. 33 CFR 165.835 - Security Zone; Port of Mobile, Mobile Ship Channel, Mobile, AL.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Port of Mobile, Mobile Ship Channel, Mobile, AL. 165.835 Section 165.835 Navigation and Navigable Waters COAST GUARD... § 165.835 Security Zone; Port of Mobile, Mobile Ship Channel, Mobile, AL. (a) Definition. As used...

  8. 18 CFR 16.5 - Site access for a competing applicant.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Site access for a competing applicant. 16.5 Section 16.5 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... RELICENSING OF LICENSED PROJECTS General Provisions § 16.5 Site access for a competing applicant. (a)...

  9. 33 CFR 165.1328 - Regulated Navigation Area; U.S. Navy submarines, Hood Canal, WA.

    Science.gov (United States)

    2010-07-01

    .... Navy submarines, Hood Canal, WA. 165.1328 Section 165.1328 Navigation and Navigable Waters COAST GUARD... § 165.1328 Regulated Navigation Area; U.S. Navy submarines, Hood Canal, WA. (a) Location. The following... whenever any U.S. Navy submarine is operating in the Hood Canal and is being escorted by the Coast...

  10. 17 CFR 1.65 - Notice of bulk transfers and disclosure obligations to customers.

    Science.gov (United States)

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Notice of bulk transfers and disclosure obligations to customers. 1.65 Section 1.65 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION GENERAL REGULATIONS UNDER THE COMMODITY EXCHANGE ACT Miscellaneous § 1.65 Notice of...

  11. 9 CFR 381.165 - “(Kind) barbecued prepared with moist heat.”

    Science.gov (United States)

    2010-01-01

    ... heat.â 381.165 Section 381.165 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE... Standards of Identity or Composition § 381.165 “(Kind) barbecued prepared with moist heat.” Such product consists of ready-to-cook poultry of the kind indicated that has been cooked by the action of moist heat in...

  12. 33 CFR 165.170 - Safety Zone: Triathlon, Ulster Landing, Hudson River, NY.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone: Triathlon, Ulster Landing, Hudson River, NY. 165.170 Section 165.170 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.170 Safety Zone: Triathlon, Ulster Landing, Hudson River, NY. (a) Regulated area. The...

  13. 33 CFR 165.708 - Safety/Security Zone; Charleston Harbor and Cooper River, Charleston, SC.

    Science.gov (United States)

    2010-07-01

    ... Harbor and Cooper River, Charleston, SC. 165.708 Section 165.708 Navigation and Navigable Waters COAST... Guard District § 165.708 Safety/Security Zone; Charleston Harbor and Cooper River, Charleston, SC. (a... Cooper River. All coordinates referenced use datum: NAD 1983. (2) All waters within 100 yards of...

  14. 33 CFR 165.709 - Security Zone; Charleston Harbor, Cooper River, South Carolina.

    Science.gov (United States)

    2010-07-01

    ..., Cooper River, South Carolina. 165.709 Section 165.709 Navigation and Navigable Waters COAST GUARD... § 165.709 Security Zone; Charleston Harbor, Cooper River, South Carolina. (a) Regulated area. The Coast Guard is establishing a fixed security zone on all waters of the Cooper River, bank-to-bank and...

  15. 33 CFR 165.1120 - Security Zone; Naval Amphibious Base, San Diego, CA.

    Science.gov (United States)

    2010-07-01

    ... Base, San Diego, CA. 165.1120 Section 165.1120 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.1120 Security Zone; Naval Amphibious Base, San Diego, CA. (a) Location. The following area is a security zone: the waters of San Diego Bay, enclosed by lines connecting the following points: Beginning at...

  16. 33 CFR 165.1110 - Security Zone: Coronado Bay Bridge, San Diego, CA.

    Science.gov (United States)

    2010-07-01

    ... Bridge, San Diego, CA. 165.1110 Section 165.1110 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.1110 Security Zone: Coronado Bay Bridge, San Diego, CA. (a) Location. All navigable waters of San Diego Bay, from the surface to the sea floor, within 25 yards of all piers, abutments, fenders and...

  17. 33 CFR 165.1108 - Security Zones; Cruise Ships, Port of San Diego, California.

    Science.gov (United States)

    2010-07-01

    ..., Port of San Diego, California. 165.1108 Section 165.1108 Navigation and Navigable Waters COAST GUARD... § 165.1108 Security Zones; Cruise Ships, Port of San Diego, California. (a) Definition. “Cruise ship” as... or at a port of call in the San Diego port. (b) Location. The following areas are security zones: (1...

  18. 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.

  19. Incomplete fusion reactions in 16O+165Ho

    Indian Academy of Sciences (India)

    Anil Sharma; B Bindu Kumar; S Mukherjee; S Chakrabarty; B S Tomar; A Goswami; G K Gubbi; S B Manohar; A K Sinha; S K Datta

    2000-03-01

    Excitation functions for evaporation residues of the system 16O+165Ho have been measured up to 100 MeV. Recoil range distribution of long lived reaction products were measured at 16O beam energy of 100 MeV. Detailed Monte Carlo simulation of recoil range distributions of products were performed with the help of PACE2 code, in order to extract the contributions of incomplete fusion in the individual channels. The results clearly show the incomplete fusion contributions in the tantalum and thulium products. This is confirmed by the predictions of breakup fusion model of the incomplete fusion.

  20. 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.

  1. Coexisting normal and triaxial superdeformed structures in {sup 165}Lu

    Energy Technology Data Exchange (ETDEWEB)

    Schoenwasser, G.; Nenoff, N.; Huebel, H. E-mail: hubel@iskp.uni-bonn.de; Hagemann, G.B.; Bednarczyk, P.; Benzoni, G.; Bracco, A.; Bringel, P.; Chapman, R.; Curien, D.; Domscheit, J.; Herskind, B.; Jensen, D.R.; Leoni, S.; Lo Bianco, G.; Ma, W.C.; Maj, A.; Neusser, A.; Oedegaard, S.W.; Petrache, C.M.; Rossbach, D.; Ryde, H.; Singh, A.K.; Spohr, K.H

    2004-05-03

    High-spin states in {sup 165}Lu were populated in the {sup 139}La({sup 30}Si,4n) reaction at a beam energy of 152 MeV and {gamma}-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta n{sub w}=0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the new bands due to mixing is observed, resulting in different signature partnerships at low and high spins.

  2. 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

  3. 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.

  4. 33 CFR 165.T05-0091 - Safety Zone; Alligator River, NC.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone; Alligator River, NC. 165.T05-0091 Section 165.T05-0091 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS Specific Regulated Navigation Areas and...

  5. 27 CFR 40.165a - Payment of tax by electronic fund transfer.

    Science.gov (United States)

    2010-04-01

    ... making payment by electronic fund transfer (EFT) of taxes on tobacco products, cigarette papers, and... electronic fund transfer. 40.165a Section 40.165a Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO..., CIGARETTE PAPERS AND TUBES, AND PROCESSED TOBACCO Operations by Manufacturers of Tobacco Products...

  6. 40 CFR 63.165 - Standards: Pressure relief devices in gas/vapor service.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 9 2010-07-01 2010-07-01 false Standards: Pressure relief devices in gas/vapor service. 63.165 Section 63.165 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... Standards: Pressure relief devices in gas/vapor service. (a) Except during pressure releases, each pressure...

  7. 15 CFR 16.5 - Development of performance information labeling specifications.

    Science.gov (United States)

    2010-01-01

    ... publish a proposed Performance Information Labeling Specification in the Federal Register with a notice... 15 Commerce and Foreign Trade 1 2010-01-01 2010-01-01 false Development of performance information labeling specifications. 16.5 Section 16.5 Commerce and Foreign Trade Office of the Secretary of...

  8. 33 CFR 165.754 - Safety Zone: San Juan Harbor, San Juan, PR.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone: San Juan Harbor, San Juan, PR. 165.754 Section 165.754 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS Specific Regulated Navigation Areas and...

  9. 40 CFR 165.85 - Design and capacity requirements for new structures.

    Science.gov (United States)

    2010-07-01

    ... containment structures: (1) You must protect appurtenances and pesticide containers against damage from... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Design and capacity requirements for new structures. 165.85 Section 165.85 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY...

  10. 40 CFR 165.87 - Design and capacity requirements for existing structures.

    Science.gov (United States)

    2010-07-01

    ... containment structures: (1) You must protect appurtenances and pesticide containers against damage from... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Design and capacity requirements for existing structures. 165.87 Section 165.87 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY...

  11. 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.

  12. 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.

  13. 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.

  14. 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)

  15. 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.

  16. 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.

  17. Prognostic factors in 165 elderly colorectal cancer patients

    Institute of Scientific and Technical Information of China (English)

    Ke-Jun Nan; Hai-Xia Qin; Guang Yang

    2003-01-01

    AIM: To analyse the prognostic factors in 165 colorectal patients aged ≥70.METHODS: One hundred and sixty-five elderly patients with colorectal cancer diagnosed by histology were entered into the retrospective study between 1994 and 2001. Patients were given optimal operation alone, chemotherapy after operation, or chemotherapy alone according to tumor stage,histology, physical strength, and co-morbid problems.Survival rate was calculated by Kaplan-Meier method, and compared with meaningful variances by Log-rank method.Prognostic factors were analyzed by Cox regression.RESULTS: The 1,2,3,4,5 year survival rate (all-cause rnortality)was 87.76%, 65.96%, 52.05%, 42.77%, 40.51%,respectively. The mean survival time was 41.89±2.33 months (95% CI: 37.33-46.45 months), and the median survival time was 37 months. Univariate analysis showed that factors such as age, nodal metastasis, treatment method, Duke's stage, gross findings, kind of histology, and degree of differentiation had influences on the survival rate. Multivariate analysis showed that factors such as treatment method,Duke's stage, kind of histology and degree of differentiation were independent prognostic factors.CONCLUSION: This study suggests that the prognosis of elderly colorectal cancer patients is influenced by several factors. Most of elderly patients can endure surgery and/or chemotherapy, and have a long-time survival and good quality of life.

  18. Clinical and demographic characteristics of 165 patients with lichen planus

    Directory of Open Access Journals (Sweden)

    Bilge Bülbül Şen

    2014-03-01

    Full Text Available Objective: Lichen planus (LP, is a papulosquamous inflammatory disease, which involves the skin, mucous membranes, nails and scalp. The incidence varies according to geographical regions. In this study, it was aimed to detect the clinical and demographic characteristics of the patients with LP who have been under follow-up at our clinic. Methods: One hundred sixty five patients, who were diagnosed as LP in our clinic between 2010 and 2013, were enrolled to the study. The age, gender, disease duration, time of onset of disease, characteristics of involvement, associated systemic diseases, laboratory findings and treatment were recorded retrospectively. Results: In our study, 0.6% of all patients admitted to our clinic were diagnosed as LP. A total of 165 patients included in the study, 92 women (56% and 73 men (44%, respectively. Patients’ ages ranged 8-78 (mean 44.7±16.7. Disease duration ranged from 1 month to 20 years (mean 15.6±29.7. One hundred thirty four patients (81.2% had skin involvement, 51 (31% had oral mucosal involvement, and 15 (9% had genital involvement. Five (4.5% of 111 patients with viral hepatitis tests were positive for hepatitis C virus. Hepatitis B virus positivity was seen in 4 (4% patients. Conclusion: There is a need for further studies with more patients to better understand the epidemiological, clinical and pathological characteristics of LP. We believe that our study will contribute to the determination of our country’s data.

  19. Establishment of a recombinant adeno-associated virus expressing hVEGF165

    Institute of Scientific and Technical Information of China (English)

    Xianghui Huang; Zhibin Shi; Xiaoqian Dang; Chen Zhang; Pengbo Yu; Kunzheng Wang

    2008-01-01

    BACKGROUND: Because certain gene vectors could have deleterious effects in the central nervous system, the choice of a safe and effective vector system has become more important for gene therapy of nerve regeneration. OBJECTIVE: To construct a non-pathogenic, recombinant adeno-associated virus (AAV) simultaneously expressing human vascular endothelial growth factor 165 (hVEGF165) and green fluorescent protein (GFP). DESIGN, TIME AND SETTING: A randomized controlled experiment was performed at the Virology Laboratory of Shaanxi Provincial Center for Disease Control and Prevention between March and September 2007. MATERIALS: AAV helper-free system, AAV-293 packaging cell line, and AAV HT-1080 cells were purchased from Stratagene, USA. E. Coli DH5α was a stocked strain from Centers for Disease Control and Prevention of Shaanxi, China. Plasmid pUC18-hHVEGF165 was a gift from Zhibin Shi. METHODS: The hVEGF165 gene was amplified by PCR from pUC18-hHVEGF165 and inserted into plasmid pAAV-IRES-hrGFP to construct recombinant plasmid pAAV-hVEGF165-IRES-hrGFP. Subsequently pAAV-hVEGF165-IRES-hrGFP, pAAV-RC (the rep/cap-gene containing plasmid), and pHelper were co-transfected into AAV-293 cells to complete rAAV-hVEGF165-IRES-hrGFP packaging through homologous recombination. The efficiency of AAV packaging was monitored under a fluorescent microscope, and the recombinant viral particles were harvested from infected AAV-293 cells, and further concentrated and purified. AAV HT-1080 cells were infected with the recombinant virus AAV-hVEGF165-IRES-hrGFP. MAIN OUTCOME MEASURES: Recombinant virus titer was measured by fluorescent cell counting, and infection efficiency was detected by Fluorescence Activated Cell Sorter (FACS) upon infecting AAV-HT1080 cells. The recombination with the exogenous gene was verified by PCR. RESULTS: The PCR amplified products were verified as hVEGF165 gene by DNA sequencing, and the recombinant pAAV-hVEGF165-IRES-GFP was confirmed by double digestion

  20. 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

  1. 33 CFR 165.502 - Safety and Security Zone; Cove Point Liquefied Natural Gas Terminal, Chesapeake Bay, Maryland.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety and Security Zone; Cove Point Liquefied Natural Gas Terminal, Chesapeake Bay, Maryland. 165.502 Section 165.502 Navigation and... Areas Fifth Coast Guard District § 165.502 Safety and Security Zone; Cove Point Liquefied Natural...

  2. 33 CFR 165.110 - Safety and Security Zone; Liquefied Natural Gas Carrier Transits and Anchorage Operations, Boston...

    Science.gov (United States)

    2010-07-01

    ...; Liquefied Natural Gas Carrier Transits and Anchorage Operations, Boston, Massachusetts. 165.110 Section 165... Limited Access Areas First Coast Guard District § 165.110 Safety and Security Zone; Liquefied Natural Gas... ahead and one mile astern, and 500 yards on each side of any liquefied natural gas carrier (LNGC)...

  3. 33 CFR 165.505 - Security Zone; Calvert Cliffs Nuclear Power Plant, Chesapeake Bay, Calvert County, Maryland.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Calvert Cliffs Nuclear Power Plant, Chesapeake Bay, Calvert County, Maryland. 165.505 Section 165.505 Navigation and... Areas Fifth Coast Guard District § 165.505 Security Zone; Calvert Cliffs Nuclear Power Plant,...

  4. 33 CFR 165.T11-281 - Safety Zone; Lake Mead Intake Construction; Lake Mead, Boulder City, NV.

    Science.gov (United States)

    2010-07-01

    ..., 2010 during construction operations. The safety zone will only be enforced during blasting, excavation... Construction; Lake Mead, Boulder City, NV. 165.T11-281 Section 165.T11-281 Navigation and Navigable Waters... Coast Guard District § 165.T11-281 Safety Zone; Lake Mead Intake Construction; Lake Mead, Boulder City...

  5. 33 CFR 165.1411 - Security zone; waters surrounding U.S. Forces vessel SBX-1, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security zone; waters surrounding U.S. Forces vessel SBX-1, HI. 165.1411 Section 165.1411 Navigation and Navigable Waters COAST GUARD... § 165.1411 Security zone; waters surrounding U.S. Forces vessel SBX-1, HI. (a) Location. The...

  6. 40 CFR 270.165 - When may I begin physical construction of new units permitted under the RAP?

    Science.gov (United States)

    2010-07-01

    ... of new units permitted under the RAP? 270.165 Section 270.165 Protection of Environment ENVIRONMENTAL... PERMIT PROGRAM Remedial Action Plans (RAPs) Getting A Rap Approved § 270.165 When may I begin physical construction of new units permitted under the RAP? You must not begin physical construction of new units...

  7. 33 CFR 165.1102 - Security Zone; Naval Base Point Loma; San Diego Bay, San Diego, CA.

    Science.gov (United States)

    2010-07-01

    ... Loma; San Diego Bay, San Diego, CA. 165.1102 Section 165.1102 Navigation and Navigable Waters COAST... Guard District § 165.1102 Security Zone; Naval Base Point Loma; San Diego Bay, San Diego, CA. (a) Location. The following area is a security zone: The water adjacent to the Naval Base Point Loma, San Diego...

  8. 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.

  9. 33 CFR 165.150 - New Haven Harbor, Quinnipiac River, Mill River.

    Science.gov (United States)

    2010-07-01

    ... River, Mill River. 165.150 Section 165.150 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF... New Haven Harbor, Quinnipiac River, Mill River. (a) The following is a regulated navigation area: The... 303°T to point D at the west bank of the mouth of the Mill River 41°18′05″ N, 72°54′23″ W thence...

  10. 33 CFR 165.1101 - Security Zone: San Diego Bay, CA.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone: San Diego Bay, CA... Navigation Areas and Limited Access Areas Eleventh Coast Guard District § 165.1101 Security Zone: San Diego... Diego enclosed by the following points: Beginning at 32°41′16.5″ N, 117°08′01″ W (Point A); thence...

  11. Construction and characterization of replication-deficient adenoviral vector containing the cDNA for human VEGF165 in an antisense orientation%反义VEGF165腺病毒重组体的构建及鉴定

    Institute of Scientific and Technical Information of China (English)

    王家宁; 黄永章; 王俊峰; 王卫民; 李瑞明; 张群林

    2001-01-01

    objective To construct the recombinant adenovirus vectorcontaining the cDNA for hVEGF165 in an antisense orientation for future study of tumor treatment by antisense hVEGF165 RNA strategy.Methods The VEGF165 cDNA has been extracted from pUCCAGGS/hVEGF165 with EcoRI and then inserted in an antisense orientation into the E1-deleted expression plasmid pHCMVsp1A shuttle vector, called pAd-ahVEGF165. pAd-ahVEGF165 was cotransfected with the plasmid pJM17 into the transformed human embryonic kidney cell line 293 cells by liposome-mediated method. Homologous recombination of the pAd-ahVEGF165 and pJM17 in 293 cells replaced the E1 region with the expression cassette from pAd-ahVEGF165. Ad-ahVEGF165 was confirmed by PCR.Ad-ahVEGF165 was propagated in 293 cells and then underwent CsCl density purification. subsequently, the preparations were didalyzed in dialysis buffer. The titer of each viral stock was determined by measuring the absorbance at 260nm. Results VEGF165 cDNA was successfully inserted into the shuttle vector pHCMVSPIA. pAd-ahVEGF165 was confirmed by NcoI and XhoI digestion. Ad-ahVEGF165 was characterized by PCR coamplification. The virus titer was 5.6×1011pfu/ml. Conclusions Ad-ahVEGF165 containing the antisense VEGF165 sequence was successfully constructd.This investigation provides the basis for future study of tumor treatment based on antisense VEGF RNA strategy.%目的:构建含人反义血管内皮生长因子165(VEGF165)基因的重组腺病毒载体,为采用反义VEGF165RNA防治肿瘤的研究奠定基础。方法:将人VEGF165 cDNA反向插入到穿梭质粒pHCMVSP1A的CMV启动子之下,即pAd-ahVEGF165。后者与pJM17通过脂质体共转染293细胞,经同源重组获得含人反义VEGF165基因的重组腺病毒Ad-ahVEGF165。通过PCR共扩增法鉴别Ad-ahVEGF165的正确与否。根据260nm的紫外光吸收值计算病毒滴度。结果:VEGF165 cDNA成功地反向插入了pHCMVSP1A载体,以重组病毒基因组DNA

  12. Clinical analysis of 165 extremely low birth weight infants%超低出生体重儿165例临床分析

    Institute of Scientific and Technical Information of China (English)

    庄严; 高喜容; 刘新晖; 熊月娥; 刘雨; 张琼

    2014-01-01

    Objective To analyze the clinical features and prognosis of extremely low birth weight infants (ELBWI).Method Data of totally 165 hospitalized ELBWI between August 1st,2008 and November 30th,2013 in Hunan Children's Hospital were analyzed.The information of general data and births,prenatal care,delivery room stabilization,transfer information,complications,treatment,outcome and follow up were summarized.Result (1) One hundred and sixty-five ELBWI were involved,their mean gestational age was(28.4 ± 2.4) weeks,mean birth weight (910.9 ± 93.1) g.(2) Rate of delivery in tertiary hospital was 46.7% (77/165)and prenatal steroids exposure was found in 52.1% (86/165).None of the cases were treated with continuous positive airway pressure (CPAP) in delivery room.(3) Rate of infants who were transfered to the class Ⅲ b neonatal ward within 12 hours after birth was 58.8% (97/165).(4) The main complications of them included neonatal respiratory distress syndrome (NRDS,77.0%,127/165),bronchopulmonary dysplasia (BPD,70.1%,75/107),patent ductus arteriosus (PDA,50.0%,40/80),preterm retinopathy (ROP,43.0%,46/107),sepsis 39.4% (65/165),intraventricular hemorrhage (IVH,34.8%,49/141),necrotizing enterocolitis(NEC,8.0%,7/88).(5) Treatment:97.6%(161/165) received oxygen therapy and 66.1% (109/165) received mechanical ventilation,55.2% (91/165) used CPAP.89.8% (114/127) of the NRDS used PS; 44.0% (33/75) of the BPD used low dose dexamethasone,32.0% (24/75) used low dose nitric oxide; 60.0% (24/40)of the PDA used medication.32.6% (15/46) of the ROP received laser photocoagulation.The average time of beginning enteral feeding was 2.0 d,the mean time to achieve full gastrointestinal feeding was 43.4 d.(6) Outcome:rate of survival in 165 cases with ELBWI was 51.5% (85/165),treatment was abandoned in 37.6% (62/165),total mortality was 48.5% (80/165).There were significant difference in survival rate between different birth weight group

  13. VEGF121b and VEGF165b are weakly angiogenic isoforms of VEGF-A

    Directory of Open Access Journals (Sweden)

    Pio Ruben

    2010-12-01

    Full Text Available Abstract Background Different isoforms of VEGF-A (mainly VEGF121, VEGF165 and VEGF189 have been shown to display particular angiogenic properties in the generation of a functional tumor vasculature. Recently, a novel class of VEGF-A isoforms, designated as VEGFxxxb, generated through alternative splicing, have been described. Previous studies have suggested that these isoforms may inhibit angiogenesis. In the present work we have produced recombinant VEGF121/165b proteins in the yeast Pichia pastoris and constructed vectors to overexpress these isoforms and assess their angiogenic potential. Results Recombinant VEGF121/165b proteins generated either in yeasts or mammalian cells activated VEGFR2 and its downstream effector ERK1/2, although to a lesser extent than VEGF165. Furthermore, treatment of endothelial cells with VEGF121/165b increased cell proliferation compared to untreated cells, although such stimulation was lower than that induced by VEGF165. Moreover, in vivo angiogenesis assays confirmed angiogenesis stimulation by VEGF121/165b isoforms. A549 and PC-3 cells overexpressing VEGF121b or VEGF165b (or carrying the PCDNA3.1 empty vector, as control and xenotransplanted into nude mice showed increased tumor volume and angiogenesis compared to controls. To assess whether the VEGFxxxb isoforms are differentially expressed in tumors compared to healthy tissues, immunohistochemical analysis was conducted on a breast cancer tissue microarray. A significant increase (p xxxb and total VEGF-A protein expression in infiltrating ductal carcinomas compared to normal breasts was observed. A positive significant correlation (r = 0.404, p = 0.033 between VEGFxxxb and total VEGF-A was found. Conclusions Our results demonstrate that VEGF121/165b are not anti-angiogenic, but weakly angiogenic isoforms of VEGF-A. In addition, VEGFxxxb isoforms are up-regulated in breast cancer in comparison with non malignant breast tissues. These results are to be taken

  14. 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.

  15. 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.

  16. Enhanced effect of VEGF165 on L-type calcium currents in guinea-pig cardiac ventricular myocytes.

    Science.gov (United States)

    Xing, Wenlu; Gao, Chuanyu; Qi, Datun; Zhang, You; Hao, Peiyuan; Dai, Guoyou; Yan, Ganxin

    2017-01-01

    The mechanisms of vascular endothelial growth factor 165 (VEGF165) on electrical properties of cardiomyocytes have not been fully elucidated. The aim of this study is to test the hypothesis that VEGF165, an angiogenesis-initiating factor, affects L-type calcium currents (ICa,L) and cell membrane potential in cardiac myocytes by acting on VEGF type-2 receptors (VEGFR2). ICa,L and action potentials (AP) were recorded by the whole-cell patch clamp method in isolated guinea-pig ventricular myocytes treated with different concentrations of VEGF165 proteins. Using a VEGFR2 inhibitor, we also tested the receptor of VEGF165 in cardiomyocytes. We found that VEGF165 increased ICa,L in a concentration-dependent manner. SU5416, a VEGFR2 inhibitor, almost completely eliminated VEGF165-induced ICa,L increase. VEGF165 had no significant influence on action potential 90 (APD90) and other properties of AP. We conclude that in guinea-pig ventricular myocytes, ICa,L can be increased by VEGF165 in a concentration-dependent manner through binding to VEGFR2 without causing any significant alteration to action potential duration. Results of this study may further expound the safety of VEGF165 when used in the intervention of heart diseases.

  17. Global Microarray Analysis of Alkaliphilic Halotolerant Bacterium Bacillus sp. N16-5 Salt Stress Adaptation.

    Directory of Open Access Journals (Sweden)

    Liang Yin

    Full Text Available The alkaliphilic halotolerant bacterium Bacillus sp. N16-5 is often exposed to salt stress in its natural habitats. In this study, we used one-colour microarrays to investigate adaptive responses of Bacillus sp. N16-5 transcriptome to long-term growth at different salinity levels (0%, 2%, 8%, and 15% NaCl and to a sudden salt increase from 0% to 8% NaCl. The common strategies used by bacteria to survive and grow at high salt conditions, such as K+ uptake, Na+ efflux, and the accumulation of organic compatible solutes (glycine betaine and ectoine, were observed in Bacillus sp. N16-5. The genes of SigB regulon involved in general stress responses and chaperone-encoding genes were also induced by high salt concentration. Moreover, the genes regulating swarming ability and the composition of the cytoplasmic membrane and cell wall were also differentially expressed. The genes involved in iron uptake were down-regulated, whereas the iron homeostasis regulator Fur was up-regulated, suggesting that Fur may play a role in the salt adaption of Bacillus sp. N16-5. In summary, we present a comprehensive gene expression profiling of alkaliphilic Bacillus sp. N16-5 cells exposed to high salt stress, which would help elucidate the mechanisms underlying alkaliphilic Bacillus spp. survival in and adaptation to salt stress.

  18. VEGF165-induced vascular permeability requires NRP1 for ABL-mediated SRC family kinase activation

    Science.gov (United States)

    Lampropoulou, Anastasia; Senatore, Valentina; Brash, James T.; Liyanage, Sidath E.; Raimondi, Claudio; Bainbridge, James W.

    2017-01-01

    The vascular endothelial growth factor (VEGF) isoform VEGF165 stimulates vascular growth and hyperpermeability. Whereas blood vessel growth is essential to sustain organ health, chronic hyperpermeability causes damaging tissue edema. By combining in vivo and tissue culture models, we show here that VEGF165-induced vascular leakage requires both VEGFR2 and NRP1, including the VEGF164-binding site of NRP1 and the NRP1 cytoplasmic domain (NCD), but not the known NCD interactor GIPC1. In the VEGF165-bound receptor complex, the NCD promotes ABL kinase activation, which in turn is required to activate VEGFR2-recruited SRC family kinases (SFKs). These results elucidate the receptor complex and signaling hierarchy of downstream kinases that transduce the permeability response to VEGF165. In a mouse model with choroidal neovascularisation akin to age-related macular degeneration, NCD loss attenuated vessel leakage without affecting neovascularisation. These findings raise the possibility that targeting NRP1 or its NCD interactors may be a useful therapeutic strategy in neovascular disease to reduce VEGF165-induced edema without compromising vessel growth. PMID:28289053

  19. Vascular endothelial growth factor-A165b prevents diabetic neuropathic pain and sensory neuronal degeneration.

    Science.gov (United States)

    Hulse, Richard P; Beazley-Long, Nicholas; Ved, Nikita; Bestall, Samuel M; Riaz, Hamza; Singhal, Priya; Ballmer Hofer, Kurt; Harper, Steve J; Bates, David O; Donaldson, Lucy F

    2015-10-01

    Diabetic peripheral neuropathy affects up to half of diabetic patients. This neuronal damage leads to sensory disturbances, including allodynia and hyperalgesia. Many growth factors have been suggested as useful treatments for prevention of neurodegeneration, including the vascular endothelial growth factor (VEGF) family. VEGF-A is generated as two alternative splice variant families. The most widely studied isoform, VEGF-A165a is both pro-angiogenic and neuroprotective, but pro-nociceptive and increases vascular permeability in animal models. Streptozotocin (STZ)-induced diabetic rats develop both hyperglycaemia and many of the resulting diabetic complications seen in patients, including peripheral neuropathy. In the present study, we show that the anti-angiogenic VEGF-A splice variant, VEGF-A165b, is also a potential therapeutic for diabetic neuropathy. Seven weeks of VEGF-A165b treatment in diabetic rats reversed enhanced pain behaviour in multiple behavioural paradigms and was neuroprotective, reducing hyperglycaemia-induced activated caspase 3 (AC3) levels in sensory neuronal subsets, epidermal sensory nerve fibre loss and aberrant sciatic nerve morphology. Furthermore, VEGF-A165b inhibited a STZ-induced increase in Evans Blue extravasation in dorsal root ganglia (DRG), saphenous nerve and plantar skin of the hind paw. Increased transient receptor potential ankyrin 1 (TRPA1) channel activity is associated with the onset of diabetic neuropathy. VEGF-A165b also prevented hyperglycaemia-enhanced TRPA1 activity in an in vitro sensory neuronal cell line indicating a novel direct neuronal mechanism that could underlie the anti-nociceptive effect observed in vivo. These results demonstrate that in a model of Type I diabetes VEGF-A165b attenuates altered pain behaviour and prevents neuronal stress, possibly through an effect on TRPA1 activity.

  20. Vascular endothelial growth factor 165b expression in stromal cells and colorectal cancer

    Institute of Scientific and Technical Information of China (English)

    Makoto Tayama; Tomohisa Furuhata; Yoshiko Inafuku; Kenji Okita; Toshihiko Nishidate; Toru Mizuguchi; Yasutoshi Kimura; Koichi Hirata

    2011-01-01

    AIM: To characterize the implications of vascular endothelial growth factor (VEGF)-A in stromal cells and colorectal cancer and the expression of VEGF-A splice variants.METHODS: VEGF-A expression in tumor and stromal cells from 165 consecutive patients with colorectal cancer was examined by immunohistochemistry. The association between VEGF-A expression status and clinicopathological factors was investigated. Twenty fresh-frozen samples were obtained for laser capture microdissection to analyze the splice variants of VEGF-A.RESULTS: VEGF-A was expressed in 53.9% and 42.4% of tumor and stromal cells, respectively. VEGF-A expression in tumor cells (t-VEGF-A) was associated with advanced clinical stage (stage 0, 1/9; stage 1, 2/16; stage 2, 32/55; stage 3, 38/66; stage 4, 16/19, P < 0.0001). VEGF-A expression in stromal cells (s-VEGF-A) increased in the earlier clinical stage (stage 0, 7/9; stage 1, 6/16; stage 2, 33/55; stage 3, 22/66; stage 4, 5/19; P = 0.004). Multivariate analyses for risk factors of recurrence showed that only s-VEGF-A expression was an independent risk factor for recurrence (relative risk 0.309, 95% confidence interval 0.141-0.676, P = 0.0033). The five-year disease-free survival (DFS) rates of t-VEGF-A-positive and -negative cases were 51.4% and 62.9%, respectively. There was no significant difference in t-VEGF-A expression status. The five-year DFS rates of s-VEGF-A-positive and -negative cases were 73.8% and 39.9%, respectively. s-VEGF-A-positive cases had significantly better survival than s-VEGF-A-negative cases (P = 0.0005). Splice variant analysis revealed that t-VEGF-A was mainly composed of VEGF165 and that s-VEGF-A included both VEGF165 and VEGF165b. In cases with no venous invasion (v0), the level of VEGF165b mRNA was significantly higher (v0 204.5 ± 122.7, v1 32.5 ± 36.7, v2 2.1 ± 1.7, P = 0.03). The microvessel density tended to be lower in cases with higher VEGF165b mRNA levels.CONCLUSION: s-VEGF-A appears be a good prognostic

  1. (π+/-,2N) reactions at 165 and 245 MeV

    Science.gov (United States)

    Altman, A.; Ashery, D.; Piasetzky, E.; Lichtenstadt, J.; Yavin, A. I.; Bertl, W.; Felawka, L.; Walter, H. K.; Powers, R. J.; Winter, R. G.; Pluym, J. V. D.

    1986-11-01

    The (π+,2p) and (π+/-, pn) reactions were studied by coincidence detection of the outgoing nucleons on C, Fe, and Bi at 165 and 245 MeV and on 16O and 18O at 165 MeV. The quasideuteron component is identified and found to account for only about 10% of the absorption cross section for carbon down to about 2% for bismuth. With corrections for the final-state interaction of outgoing nucleons it amounts to at most 40%. The data indicate that quasideuteron absorption following pion scattering is not likely. The absorption on T=1 nucleon pairs is about 4% of that on quasideuterons.

  2. 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.

  3. 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.

  4. Yeast Interacting Proteins Database: YKL002W, YDL165W [Yeast Interacting Proteins Database

    Lifescience Database Archive (English)

    Full Text Available bait as prey (1) YDL165W CDC36 Component of the CCR4-NOT complex, which has multiple roles...e CDC36 Prey description Component of the CCR4-NOT complex, which has multiple roles in regulating mRNA leve

  5. 33 CFR 165.751 - Security Zone: LNG mooring slip, Savannah River, Savannah, Georgia.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone: LNG mooring slip... § 165.751 Security Zone: LNG mooring slip, Savannah River, Savannah, Georgia. (a) Security zone. The... security zone; or (4) Actively engaged in escort, maneuvering, or support duties for an LNG tankship....

  6. 33 CFR 165.106 - Security Zone: Seabrook Nuclear Power Plant, Seabrook, New Hampshire.

    Science.gov (United States)

    2010-07-01

    ... Guard District § 165.106 Security Zone: Seabrook Nuclear Power Plant, Seabrook, New Hampshire. (a... property boundary of Seabrook Nuclear Power Plant identified as follows: beginning at position 42°53′58″ N, 070°51′06″ W then running along the property boundaries of Seabrook Nuclear Power Plant to position...

  7. Complete Genome Sequence of Mycoplasma bovoculi Strain M165/69T (ATCC 29104).

    Science.gov (United States)

    Calcutt, Michael J; Foecking, Mark F

    2014-02-20

    Bovine ocular infections compromise animal health and result in significant economic losses. Mycoplasma bovoculi is an etiological agent of conjunctivitis. Presented here is the 760,240-bp complete genome sequence of the M. bovoculi type strain M165/69(T). An analysis of the deduced proteome provides insights into the adherence and antigenic variation mechanisms of the strain.

  8. 33 CFR 165.503 - Security Zone; Captain of the Port Hampton Roads Zone.

    Science.gov (United States)

    2010-07-01

    ... transiting, moored or anchored. (c) Regulations. (1) No vessel may approach within 500 yards of a passenger... 33 CFR 165.7. (4) A security zone in effect around a moving or anchored vessel will be enforced by a... instructions of the COTP or the COTP's designated representative. (d) Enforcement. The COTP will enforce...

  9. 29 CFR 4.165 - Wage payments and fringe benefits-in general.

    Science.gov (United States)

    2010-07-01

    ... specifying higher monetary wages or fringe benefits than those contained in an applicable determination. However, if an applicable wage determination contains a wage or fringe benefit provision for a class of... 29 Labor 1 2010-07-01 2010-07-01 true Wage payments and fringe benefits-in general. 4.165...

  10. 33 CFR 165.806 - Sabine Neches Waterway, Texas-regulated navigation area.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Sabine Neches Waterway, Texas... § 165.806 Sabine Neches Waterway, Texas—regulated navigation area. (a) The following is a regulated navigation area—The Sabine Neches Waterway which includes the following waters: Sabine Pass Channel,...

  11. 33 CFR 165.836 - Security Zone; Escorted Vessels, Mobile, Alabama, Captain of the Port.

    Science.gov (United States)

    2010-07-01

    ... § 165.836 Security Zone; Escorted Vessels, Mobile, Alabama, Captain of the Port. (a) Definitions. The... Mobile or a designated representative to enter the security zone described in paragraph (c) of this... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Escorted...

  12. VEGF165 Stimulates Vessel Density and Vessel Diameter Differently in Angiogenesis and Lymphangiogenesis

    Science.gov (United States)

    Parsons-Wingerter, Patricia; Radhakrishnan, Krishnan; DiCorleto, Paul E.; Leontiev, Dmitry; Anand-Apte, Bela; Albarran, Brian; Farr, Andrew G.

    2005-01-01

    Vascular endothelial growth factor-165 (VEGF(sub 165)) stimulated angiogenesis in the quail chorioallantoic membrane (CAM) by vessel expansion from the capillary network. However, lymphangiogenesis was stimulated by the filopodial guidance of tip cells located on blind-ended lymphatic sprouts. As quantified by fractal/generational branching analysis using the computer code VESGEN, vascular density increased maximally at low VEGF concentrations, and vascular diameter increased most at high VEGF concentrations. Increased vascular density and diameter were statistically independent events (r(sub s), -0.06). By fluorescence immunohistochemistry of VEGF receptors VEGFR-1 and VEGFR-2, alpha smooth muscle actin ((alpha) SMA) and a vascular/lymphatic marker, VEGF(sub 165) increased the density and diameter of sprouting lymphatic vessels guided by tip cells (accompanied by the dissociation of lymphatics from blood vessels). Isolated migratory cells expressing (alpha)SMA were recruited to blood vessels, whereas isolated cells expressing VEGFR-2 were recruited primarily to lymphatics. In conclusion, VEGF(sub 165) increased lymphatic vessel density by lymphatic sprouting, but increased blood vessel density by vascular expansion from the capillary network.

  13. 33 CFR 165.902 - Niagara River at Niagara Falls, New York-safety zone.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Niagara River at Niagara Falls... § 165.902 Niagara River at Niagara Falls, New York—safety zone. (a) The following is a safety zone—The United States waters of the Niagara River from the crest of the American and Horseshoe Falls,...

  14. 33 CFR 165.1104 - Security Zone: San Diego Bay, CA.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone: San Diego Bay, CA... Navigation Areas and Limited Access Areas Eleventh Coast Guard District § 165.1104 Security Zone: San Diego... into the area of this zone is prohibited unless authorized by the Captain of the Port San Diego...

  15. High activity of Mj HSP16.5 under acidic condition

    Institute of Scientific and Technical Information of China (English)

    WANG Zheng; CAO Ao-Neng; LAI Lu-Hua

    2009-01-01

    Small heat shock proteins (sHSPs) exist ubiquitously among all organisms, with a variety of functions. All small heat shock proteins assemble into a native large oligomeric state containing 9-40 monomers. The sHSPs show chaperone-like activity to prevent the aggregation of nonnative proteins under stressful cellular conditions such as non-optimal temperatures, pH changes, osmotic pressure, and exposure to toxic chemicals. It was found that a common dimeric subunit of sHSPs might be the major active species, but whether the native large oligomeric state is only a storage state or a state crucial to its molecular chaperone activity is still under debate. The native large oligomeric state of the small heat shock protein from a hyperthermophilic methanarchaeon, Methanococcus jannaschii (Mj HSP 16.5), is a stable icositetramer, which is a symmetric hollow sphere that is very stable even at 85℃, and no small active subunit has been detected till now. Our results show that Mj sHSP 16.5 changes into small and active oligomeric state at pH 3, likely as octamers (average result) at 25℃, and dimers at 65℃. The dimer of Mj HSP 16.5 at pH 3.0 and 65℃ is very active and efficient, even 7-fold more efficient than the high-temperature-activated icositetramer at neutral pH. Monomer exchange can be observed between dimers of Mj HSP 16.5 at pH 3.0 and 65℃. These results not only demonstrate that the icositetramer structure of Mj sHSP16.5 is not necessary for its molecular chaperone activity, but also suggest that Mj sHSP16.5 is a very efficient chaperone acting at high temperature and under the acidic condition. Even though it is not clear whether the native environment of Methanococcus jannaschii is acidic or not, given its ability to excrete acidic compounds, it is likely that Methanococcus jannaschii will encounter acidic internal or external environments at high temperature. Our results demonstrate that Mj HSP 16.5 may help Methanococcus jannaschii to survive better

  16. Quantitative determination of VEGF165 in cell culture medium by aptamer sandwich based chemiluminescence assay.

    Science.gov (United States)

    Shan, Siwen; He, Ziyi; Mao, Sifeng; Jie, Mingsha; Yi, Linglu; Lin, Jin-Ming

    2017-08-15

    In this work, we have developed a sensitive and selective chemiluminescence (CL) assay for vascular endothelial growth factor (VEGF165) quantitative detection based on two specific VEGF165 binding aptamers (Apt). VEGF is a predominant biomarker in cancer angiogenesis, and sensitive detection method of VEGF are highly demanded for both academic study and clinical diagnosis of multiple cancers. In our experiment, VEGF165 was captured in a sandwich structure assembled by two binding aptamers, one capture aptamer was immobilized on streptavidin-coated magnetic beads (MBs) and another VEGF-binding aptamer was labeled by biotin for further phosphatase conjunction. After Apt-VEGF-Apt sandwich was formed on MBs surface, alkaline phosphatase (ALP) was modified to the second aptamer to catalyze CL reaction. By applying 4-methoxy-4-(3-phosphatephenyl)-spiro-(1,2-dioxetane-3,2-adamantane) (AMPPD) as CL substrate, strong signal intensity was achieved. VEGF165 content as low as 1ng/mL was detected in standard spiked samples by our assay, and linear range of working curve was confirmed from 1 to 20ng/mL. Then our method was successfully applied for cell culture medium analysis and on-chip hypoxic HepG2-HUVEC co-culture model study with excellent accuracy equal to ELISA Kit. Our developed assay demonstrated an outstanding performance in VEGF165 quantification and may be further extended to clinical testing of important biomarkers as well as probing microchip cell culture model. Copyright © 2017 Elsevier B.V. All rights reserved.

  17. Analysis of clinical treatment on 165 Cases'plateau hypnotic toxicosis%高原安眠药中毒165列临床救治分析

    Institute of Scientific and Technical Information of China (English)

    刘秀海

    2008-01-01

    目的 研究高原安眠药中毒抢救方案.方法 对165例患者临床救治进行回顾分析.结果 基本掌握临床救治.结论 基本掌握高原安眠药中毒抢救治疗措施,呼吁社会各界加大精神药品监管力度,减少中毒事故的发生.

  18. 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...

  19. 33 CFR 165.1301 - Puget Sound and Adjacent Waters in Northwestern Washington-Regulated Navigation Area.

    Science.gov (United States)

    2010-07-01

    ... in Northwestern Washington-Regulated Navigation Area. 165.1301 Section 165.1301 Navigation and... REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS Specific Regulated Navigation Areas and Limited Access... Washington—Regulated Navigation Area. The following is a regulated navigation area—All of the following...

  20. 33 CFR 165.776 - Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico 165.776 Section 165.776 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS Specific...

  1. 33 CFR 165.T11-304 - Safety zone; Sea World Summer Nights Fireworks; Mission Bay, San Diego, California.

    Science.gov (United States)

    2010-07-01

    ... Nights Fireworks; Mission Bay, San Diego, California. 165.T11-304 Section 165.T11-304 Navigation and...; Mission Bay, San Diego, California. (a) Location. The limits of the safety zone will include a 600 foot... prohibited unless authorized by the Captain of the Port of San Diego or his designated on-scene...

  2. 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.

  3. 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.

  4. Global microarray analysis of carbohydrate use in alkaliphilic hemicellulolytic bacterium Bacillus sp. N16-5.

    Directory of Open Access Journals (Sweden)

    Yajian Song

    Full Text Available The alkaliphilic hemicellulolytic bacterium Bacillus sp. N16-5 has a broad substrate spectrum and exhibits the capacity to utilize complex carbohydrates such as galactomannan, xylan, and pectin. In the monosaccharide mixture, sequential utilization by Bacillus sp. N16-5 was observed. Glucose appeared to be its preferential monosaccharide, followed by fructose, mannose, arabinose, xylose, and galactose. Global transcription profiles of the strain were determined separately for growth on six monosaccharides (glucose, fructose, mannose, galactose, arabinose, and xylose and four polysaccharides (galactomannan, xylan, pectin, and sodium carboxymethylcellulose using one-color microarrays. Numerous genes potentially related to polysaccharide degradation, sugar transport, and monosaccharide metabolism were found to respond to a specific substrate. Putative gene clusters for different carbohydrates were identified according to transcriptional patterns and genome annotation. Identification and analysis of these gene clusters contributed to pathway reconstruction for carbohydrate utilization in Bacillus sp. N16-5. Several genes encoding putative sugar transporters were highly expressed during growth on specific sugars, suggesting their functional roles. Two phosphoenolpyruvate-dependent phosphotransferase systems were identified as candidate transporters for mannose and fructose, and a major facilitator superfamily transporter was identified as a candidate transporter for arabinose and xylose. Five carbohydrate uptake transporter 1 family ATP-binding cassette transporters were predicted to participate in the uptake of hemicellulose and pectin degradation products. Collectively, microarray data improved the pathway reconstruction involved in carbohydrate utilization of Bacillus sp. N16-5 and revealed that the organism precisely regulates gene transcription in response to fluctuations in energy resources.

  5. 26 CFR 1.165-4 - Decline in value of stock.

    Science.gov (United States)

    2010-04-01

    ... fluctuation in the market price of the stock or to other similar cause. A mere shrinkage in the value of stock... securities under section 471. See § 1.471-5. (d) Definition. As used in this section, the term “stock” means... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Decline in value of stock. 1.165-4 Section...

  6. 33 CFR 165.130 - Sandy Hook Bay, New Jersey-security zone.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Sandy Hook Bay, New Jersey... Specific Regulated Navigation Areas and Limited Access Areas First Coast Guard District § 165.130 Sandy... following boundaries are a security zone: A line beginning on the shore at 40°25′55.6″ N, 074°04′31.4″ W...

  7. Draft Genome Sequence of Enterococcus faecalis Strain F165 Isolated from a Urinary Tract Infection

    Science.gov (United States)

    Pieta, Luiza; Prichula, Janira; Sambrano, Gustavo E.; Soares, Renata; Bello, Aline Dall; Frazzon, Jeverson; d’Azevedo, Pedro A.

    2016-01-01

    We report here a draft genome sequence of Enterococcus faecalis strain F165 isolated from a urine specimen in South Brazil. The genome size was 3,049,734 bp, with a G+C content of 37.38%, and genes related to antimicrobial resistance and adherence were found in the strain. These findings are consistent with pathogenesis of E. faecalis species.

  8. Vascular Endothelial Growth Factor-A165b Is Protective and Restores Endothelial Glycocalyx in Diabetic Nephropathy.

    Science.gov (United States)

    Oltean, Sebastian; Qiu, Yan; Ferguson, Joanne K; Stevens, Megan; Neal, Chris; Russell, Amy; Kaura, Amit; Arkill, Kenton P; Harris, Kirstie; Symonds, Clare; Lacey, Katja; Wijeyaratne, Lihini; Gammons, Melissa; Wylie, Emma; Hulse, Richard P; Alsop, Chloe; Cope, George; Damodaran, Gopinath; Betteridge, Kai B; Ramnath, Raina; Satchell, Simon C; Foster, Rebecca R; Ballmer-Hofer, Kurt; Donaldson, Lucy F; Barratt, Jonathan; Baelde, Hans J; Harper, Steven J; Bates, David O; Salmon, Andrew H J

    2015-08-01

    Diabetic nephropathy is the leading cause of ESRD in high-income countries and a growing problem across the world. Vascular endothelial growth factor-A (VEGF-A) is thought to be a critical mediator of vascular dysfunction in diabetic nephropathy, yet VEGF-A knockout and overexpression of angiogenic VEGF-A isoforms each worsen diabetic nephropathy. We examined the vasculoprotective effects of the VEGF-A isoform VEGF-A165b in diabetic nephropathy. Renal expression of VEGF-A165b mRNA was upregulated in diabetic individuals with well preserved kidney function, but not in those with progressive disease. Reproducing this VEGF-A165b upregulation in mouse podocytes in vivo prevented functional and histologic abnormalities in diabetic nephropathy. Biweekly systemic injections of recombinant human VEGF-A165b reduced features of diabetic nephropathy when initiated during early or advanced nephropathy in a model of type 1 diabetes and when initiated during early nephropathy in a model of type 2 diabetes. VEGF-A165b normalized glomerular permeability through phosphorylation of VEGF receptor 2 in glomerular endothelial cells, and reversed diabetes-induced damage to the glomerular endothelial glycocalyx. VEGF-A165b also improved the permeability function of isolated diabetic human glomeruli. These results show that VEGF-A165b acts via the endothelium to protect blood vessels and ameliorate diabetic nephropathy.

  9. 孕早期外周血VEGF165b降低对预测子痫前期的作用研究%Effects of low VEGF165b on predicting increased risk of pre-eclampsia

    Institute of Scientific and Technical Information of China (English)

    武寿荣; 钱雷; 陈玮; 吴凤会

    2012-01-01

    Objective:To evaluate the signification of vascular endothelial growth factor165 b ( VEGF165 b ) for predicting increased risk of pre- eclampsia ( PE) , and to detect the expression of VEGF165 b in plasma of PE patients. Methods; Forty-seven patients with PE,42 normotensive pregnant women and 40 nonpregnant women were recruited in this study. The concentration of VEGF165b and VEGF in plasma of all women were analyzed with the methods of ELISA and cEIA respectively. Results; At 12 weeks of gestation, the VEGF165b concentration was significantly up- regulated in plasma from normotensive group [ ( 4. 49 ± 1. 57 ) ng·Ml 1 ] compared with non-pregnant women [ (0. 42 ± 0. 18) ng·Ml , P < 0. 01 ] . In contrast, in patients who later developed pre-eclampsia, VEGF165b levels [(1. 19 ±0. 50)ng-ml ] were significantly lower than in the normotensive group, but were greater than nonpregnant women. The serum concentrations of total VEGF were increased in the patients with PE compared to the women with normotensive group [ ( 35. 6 ± 5. 7 ) vs ( 29. 3 ± 4. 7 ) ng·Ml 1 , P < 0. 01 ]. ROC curve indicate that low VEGF165b in first trimester plasma may sensitively predict the risk of pre-eclampsia. Conclusion; Plasma VEGF165b levels may be a clinically useful first trimester plasma marker for increased risk of pre-eclampsia.%目的:分析血管内皮生长因子165b(VEGF165b)在子痫前期(PE)患者血清中的表达,探讨孕早期外周血VEGF165b作为预测PE发生的生物学指标的临床意义.方法:酶联免疫吸附试验(ELISA)和竞争性酶免疫分析(cEIA)分别检测47例PE患者和42例无高血压正常孕妇、40例未怀孕正常妇女血清中VEGF165b、VEGF的含量.ROC曲线分析孕12周VEGF165b预测PE发生的灵敏度.结果:孕12周,正常孕妇组血清VEGF165b含量[(4.49±1.57) ng·ml-1]与未怀孕组[(0.42±0.18) ng·ml-1]相比显著升高(P<0.01),发展成PE患者的外周血VEGF165b含量[(1.19±0.50) ng·ml-1]与正常

  10. Effect of combined VEGF165/ SDF-1 gene therapy on vascular remodeling and blood perfusion in cerebral ischemia.

    Science.gov (United States)

    Hu, Guo-Jie; Feng, Yu-Gong; Lu, Wen-Peng; Li, Huan-Ting; Xie, Hong-Wei; Li, Shi-Fang

    2016-12-16

    OBJECTIVE Therapeutic neovascularization is a promising strategy for treating patients after an ischemic stroke; however, single-factor therapy has limitations. Stromal cell-derived factor 1 (SDF-1) and vascular endothelial growth factor (VEGF) proteins synergistically promote angiogenesis. In this study, the authors assessed the effect of combined gene therapy with VEGF165 and SDF-1 in a rat model of cerebral infarction. METHODS An adenoviral vector expressing VEGF165 and SDF-1 connected via an internal ribosome entry site was constructed (Ad- VEGF165-SDF-1). A rat model of middle cerebral artery occlusion (MCAO) was established; either Ad- VEGF165-SDF-1 or control adenovirus Ad- LacZ was stereotactically microinjected into the lateral ventricle of 80 rats 24 hours after MCAO. Coexpression and distribution of VEGF165 and SDF-1 were examined by reverse-transcription polymerase chain reaction, Western blotting, and immunofluorescence. The neurological severity score of each rat was measured on Days 3, 7, 14, 21, and 28 after MCAO. Angiogenesis and vascular remodeling were evaluated via bromodeoxyuridine and CD34 immunofluorescence labeling. Relative cerebral infarction volumes were determined by T2-weighted MRI and triphenyltetrazolium chloride staining. Cerebral blood flow, relative cerebral blood volume, and relative mean transmit time were assessed using perfusion-weighted MRI. RESULTS The Ad- VEGF165-SDF-1 vector mediated coexpression of VEGF165 and SDF-1 in multiple sites around the ischemic core, including the cortex, corpus striatum, and hippocampal granular layer. Coexpression of VEGF165 and SDF-1 improved neural function, reduced cerebral infarction volume, increased microvascular density and promoted angiogenesis in the ischemic penumbra, and improved cerebral blood flow and perfusion. CONCLUSIONS Combined VEGF165 and SDF-1 gene therapy represents a potential strategy for improving vascular remodeling and recovery of neural function after cerebral

  11. Fast Data Acquisition for X-ray CCD 165 SX Detector%X -ray CCD165-SX 探测器快速数据采集

    Institute of Scientific and Technical Information of China (English)

    柳义; 周平

    2014-01-01

    对X光探测器X-ray CCD165-SX在帧移模式下进行数据采集。选择合适开口高度的掩膜,使得CCD的曝光面仅是整个探测面的一小部份。利用TTL信号发生器产生的脉冲信号触发子潜像帧移,将各个不同时间内产生的子潜像储存在CCD的芯片上不同位置上,当芯片填满子潜像时,一次性读出。这种方式大大加快了实验数据的采集速度。实验中对快速升温的情况下对PE样品进行测试,成功地采集到了随时间快速变化的散射信号。%By installation of the mask with adjustable opening size and TTL generator ,X-ray Scattering data is collected by X-ray CCD 165 SX under Frameshift mode .In the process ,exposure area is onlysmall part of the detecting area of the CCD and sub -images produced at difference times are frame shifted by TTL trigger to difference parts on CCD chip subsequently .All the sub-images are read out at once until the chip reaches full-ness of sub -images.This approach greatly increases the data collection speed .Finally,we use PE as the sam-ple in fast temperature rising environment for the fast data acquisition measurement and successful ly collected the scattering data which changed with times .

  12. 33 CFR 165.1327 - Security Zone; escorted U.S. Navy submarines in Sector Seattle Captain of the Port Zone.

    Science.gov (United States)

    2010-07-01

    ... submarines in Sector Seattle Captain of the Port Zone. 165.1327 Section 165.1327 Navigation and Navigable... Thirteenth Coast Guard District § 165.1327 Security Zone; escorted U.S. Navy submarines in Sector Seattle... yards of any U.S. Navy submarine that is operating in the Sector Seattle Captain of the Port Zone,...

  13. 33 CFR 165.1412 - Security Zone; escorted U.S. Navy submarines in Sector Honolulu Captain of the Port Zone.

    Science.gov (United States)

    2010-07-01

    ... submarines in Sector Honolulu Captain of the Port Zone. 165.1412 Section 165.1412 Navigation and Navigable... Fourteenth Coast Guard District § 165.1412 Security Zone; escorted U.S. Navy submarines in Sector Honolulu... surface to the ocean floor, within 1,000 yards of any U.S. Navy submarine that is (1) Operating in...

  14. 33 CFR 165.T09-0290 - Safety Zones; Blasting Operations and Movement of Explosives, St. Marys River, Sault Sainte Marie...

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zones; Blasting Operations and Movement of Explosives, St. Marys River, Sault Sainte Marie, MI. 165.T09-0290 Section 165.T09-0290... Limited Access Areas Ninth Coast Guard District § 165.T09-0290 Safety Zones; Blasting Operations...

  15. 33 CFR 165.161 - Safety zones: Coast Guard Captain of the Port New York annual fireworks displays.

    Science.gov (United States)

    2010-07-01

    ... following New Year's Eve. (b) Regulations. (1) The general regulations contained in 33 CFR 165.23 apply. (2... following Labor Day. (5) Deepavali Festival fireworks, East River, NY: (i) Location. All waters of the...

  16. Inhibitory effect of antisense vascular endothelial growth factor 165 eukaryotic expression vector on proliferation of hepatocellular carcinoma cells

    Institute of Scientific and Technical Information of China (English)

    Song Gu; Chang-Jian Liu; Tong Qiao; Xue-Mei Sun; Lei-Lei Chen; Le Zhang

    2004-01-01

    AIM: To construct antisense VEGF165 eukaryotic expression vector PCDNA3-as-VEGF165 and to study its expression and effect on the proliferation of hepatocarcinoma SMMC-7721 cells.METHODS: VEGF165 cDNA was inserted into polylinker sites of eukaryotic expression vector PCDNA3 to construct PCDNA3-as-VEGF165. Then the vector was transferred into human hepatocarcinoma cell strain SMMC-7721 with cation lipofectamine 2000 mediated methods to evaluate the expression of VEGF protein and the inhibitory effect on the proliferation of hepatocarcinoma SMMC-7721 cells.RESULTS: The detection indicated the presence of VEGF cDNA in normally cultured SMMC-7721 cells by PCR. VEGF mRNA expression was notably decreased in SMMC-7721 cells by RT-PCR after PCDNA3-as-VEGF165 transfection. The expression of VEGF protein was dramatically inhibited (142.01±7.95 vs 1 625.52±64.46 pg·ml-1, P<0.01) 2 days after transfection,which correlated with the dose of PCDNA3-as-VEGF165 gene.VEGF protein was most expressed in PCDNA3 transferred SMMC-7721 cells but few in PCDNA3-as-VEGF165 transferred cells by immunohistochemical staining. The apoptotic rate of hepatocarcinoma SMMC-7721 cells was significantly promoted (17.98±0.86% vs4.86±0.27%, P<0.01) and the survival rate was notably decreased (80.99±3.20% vs 93.52±3.93%, P<0.05) due to antisense VEGF165 by flow cytometry (FCM). The transfection of antisense VEGF165 gene resulted in the inhibitory effect on the proliferation of hepatocarcinoma cells by 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) and the death of all hepatocarcinoma cells on day 6 after transfection.CONCLUSION: It is confirmed that antisense VEGF165 can inhibit the expression of VEGF protein, interfere with the proliferation and induce the apoptosis of hepatocarcinoma cells in our study. Antisense VEGF165 gene therapy may play an important role in the treatment of human hepatocarcinoma.

  17. Molecular characterization of a DNA fragment harboring the replicon of pBMB165 from Bacillus thuringiensis subsp. tenebrionis

    Directory of Open Access Journals (Sweden)

    Yu Ziniu

    2006-10-01

    Full Text Available Abstract Background Bacillus thuringiensis belongs to the Bacillus cereus sensu lato group of Gram-positive and spore-forming bacteria. Most isolates of B. thuringiensis can bear many endogenous plasmids, and the number and size of these plasmids can vary widely among strains or subspecies. As far as we know, the replicon of the plasmid pBMB165 is the first instance of a plasmid replicon being isolated from subsp. tenebrionis and characterized. Results A 20 kb DNA fragment containing a plasmid replicon was isolated from B. thuringiensis subsp. tenebrionis YBT-1765 and characterized. By Southern blot analysis, this replicon region was determined to be located on pBMB165, the largest detected plasmid (about 82 kb of strain YBT-1765. Deletion analysis revealed that a replication initiation protein (Rep165, an origin of replication (ori165 and an iteron region were required for replication. In addition, two overlapping ORFs (orf6 and orf10 were found to be involved in stability control of plasmid. Sequence comparison showed that the replicon of pBMB165 was homologous to the pAMβ1 family replicons, indicating that the pBMB165 replicon belongs to this family. The presence of five transposable elements or remnants thereof in close proximity to and within the replicon control region led us to speculate that genetic exchange and recombination are potentially responsible for the divergence among the replicons of this plasmid family. Conclusion The replication and stability features of the pBMB165 from B. thuringiensis subsp. tenebrionis YBT-1765 were identified. Of particular interest is the homology and divergence shared between the pBMB165 replicon and other pAMβ1 family replicons.

  18. ZX165井压力恢复曲线异常分析与处理

    Institute of Scientific and Technical Information of China (English)

    韩凤蕊

    2011-01-01

    ZX165井压力恢复测试曲线早期出现严重的"驼峰",使用常规试井方法无法解释。通过对曲线异常原因分析,应用相应的测试压力处理方法,使用Saphir软件完成了对ZX165井测试的试井分析。

  19. Clinical Characteristics of 165 Cases of Peritoneal Malignant Mesothelioma in China%我国165例腹膜恶性间皮瘤临床特点

    Institute of Scientific and Technical Information of China (English)

    梁建华; 蒋祖福; 杨余沙

    2011-01-01

    Objective To explore the clinical characteristics and methods of diagnosis of peritoneal malignant mesothelioma (PMN) in China.Methods A total of 165 cases reported by 32 civil documents by searching the Chinese full text database of CNKI and VIP were retrospectively analyzed.Results PMM is a very rare disease, male cases are more seen than female.Its clinical manifestation has no specificity.Ascites is the most frequent clinical physical sign (96%).Abdominal pain and abdominal distention are frequent complains (77.8% and 63.9%).Most PMM cases were misdiagnosed as tuberculous peritonitis or tumors of the alimentary canal.Open or laparoscopic exploration is the most frequent was to make final diagnosis.The prognosis of PMM is bad.The meso life span is about 1.5 years after combined therapy.Conclusion PMM is a very rare disease.The misdiagnosis rate of PMM is high.PMM's clinical characteristics should be fully awared so that diagnosis of PMM would be made early.Combine therapy can extend the patient ' s life span.%目的:总结我国腹膜恶性间皮瘤的临床表现及诊治方法.方法:以腹膜恶性间皮瘤为检索词,分别对中国期刊网全文数据库、维普资讯网中文科技期刊数据库在2000-2010年期间发表的中文临床报道进行检索.结果:共检出腹膜恶性间皮瘤165例,男性多于女性.临床症状以腹痛、腹胀为最常见,出现率约为77.8%及63.9%.腹水是最常见的体征,出现率约为96%.剖腹及腹腔镜下探查是确诊的最常见手段.腹膜恶性间皮瘤预后较差,综合治疗后中位生存期约1.5年.结论:腹膜恶性间皮瘤是临床罕见病,误诊率高,应充分认识其特点,提高早期诊治腹膜恶性间皮瘤的水平.积极的综合治疗可以延长病人的生存期.

  20. ODMR experiments on the 1.65eV luminescence in GaP:Cu

    Science.gov (United States)

    Greidanus, F. J. A. M.; van Roosmalen, J. T. C.

    1987-03-01

    Optically detected magnetic resonance experiments on the 1.65eV emission band in a Cu-doped LPE-grown GaP layer are reported. A strong resonance with a g-value of g = 2.006 ± 0.003 is observed. The linewidth depends on both microwave and laser excitation power. Other resonances, appearing at two and three times the field of the strong resonance, have also been measured. An interpretation of the measurements is given, based on the recombination of exchange coupled donor-acceptor pairs.

  1. Transfection of bone marrow mesenchymal stem cells using green fluorescence protein labeled hVEGF165 recombinant plasmid mediated by liposome

    Institute of Scientific and Technical Information of China (English)

    Tao Wang; Tian-An Liao; Shao-Bo Zhong

    2013-01-01

    Objective:To study the role of bone marrow mesenchymal stem cells (BMSCs) in construction of vascularized engineered tissue. Methods: hVEGF165 was amplified via RT-PCR before recombinant with pShuttle-green fluorescence protein;green fluorescent protein (GFP)-CMV. Then the recombinant shuttle plasmid was transfected into BMSCs with LipofectamineTM 2000 for packaging and amplifying. hVEGF165 mRNA expression in BMSCs cells was tested. Results:The sequence of hVEGF165 in pShuttle-GFP-hVEGF165 plasmid was confirmed by double-enzyme cleavage method and sequencing. hVEGF165 was highly expressed in BMSCs. Conclusions:The GFP/hVEGF165 recombinant plasmid vector was constructed successfully and expressed effectively in host cells, which may be helpful for discussing the possibility of the application of VEGF165-BMSCs in tissue engineering and ischemic disease cure.

  2. /sup 165/Ho(n,. gamma. ) standard cross section from 3 to 450 keV

    Energy Technology Data Exchange (ETDEWEB)

    Macklin, R.L.

    1976-03-01

    The /sup 165/Ho(n, ..gamma..) cross section was measured at the Oak Ridge Electron Linear Accelerator neutron time-of-flight facility. Nonhydrogenous scintillation detectors were used with pulse-height weighting to measure the prompt photon yield, normalized to the saturated 3.92-eV resonance in (/sup 165/Ho + n) and the shape of the /sup 6/Li(n,..cap alpha..) cross section. Resonance parameters for many of the observed peaks below 3 keV were determined by a nonlinear least-squares fit. The data to 100 keV were well fitted with energy-independent strength functions 10/sup 4/S/sup 0/ = 1.33 +- 0.14, 10/sup 4/S/sup 1/ = 1.36 +- 0.24, 10/sup 4/S/sub 2/ = 1.19 +- 0.76 and anti GAMMA/sub ..gamma../D/sub 0/ = 0.076/(3.23 +- 0.55 eV). The fluctuations of the cross section about the strength function fit are analyzed for 250-eV averages. The Wald-Wolfowitz ''Runs'' test is consistent with no additional nonrandom structure in the cross section. 3 figures, 1 table. (auth)

  3. A polymer nanoparticle with engineered affinity for a vascular endothelial growth factor (VEGF165)

    Science.gov (United States)

    Koide, Hiroyuki; Yoshimatsu, Keiichi; Hoshino, Yu; Lee, Shih-Hui; Okajima, Ai; Ariizumi, Saki; Narita, Yudai; Yonamine, Yusuke; Weisman, Adam C.; Nishimura, Yuri; Oku, Naoto; Miura, Yoshiko; Shea, Kenneth J.

    2017-07-01

    Protein affinity reagents are widely used in basic research, diagnostics and separations and for clinical applications, the most common of which are antibodies. However, they often suffer from high cost, and difficulties in their development, production and storage. Here we show that a synthetic polymer nanoparticle (NP) can be engineered to have many of the functions of a protein affinity reagent. Polymer NPs with nM affinity to a key vascular endothelial growth factor (VEGF165) inhibit binding of the signalling protein to its receptor VEGFR-2, preventing receptor phosphorylation and downstream VEGF165-dependent endothelial cell migration and invasion into the extracellular matrix. In addition, the NPs inhibit VEGF-mediated new blood vessel formation in Matrigel plugs in vivo. Importantly, the non-toxic NPs were not found to exhibit off-target activity. These results support the assertion that synthetic polymers offer a new paradigm in the search for abiotic protein affinity reagents by providing many of the functions of their protein counterparts.

  4. Effects of BMP2 and VEGF165 on the osteogenic differentiation of rat bone marrow-derived mesenchymal stem cells.

    Science.gov (United States)

    Lin, Zhaowei; Wang, Jiang-Sheng; Lin, Lijun; Zhang, Jingwen; Liu, Yunlong; Shuai, Ming; Li, Qi

    2014-03-01

    Bone marrow-derived mesenchymal stem cells (MSCs) are dominant seed cell sources for bone regeneration. Bone morphogenetic proteins (BMPs) initiate cartilage and bone formation in a sequential cascade. Vascular endothelial growth factor (VEGF) is an essential coordinator of extracellular matrix remodeling, angiogenesis and bone formation. In the present study, the effects of the vascular endothelial growth factor 165 (VEGF165) and bone morphogenetic protein 2 (BMP2) genes on bone regeneration were investigated by the lentivirus-mediated cotransfection of the two genes into rat bone marrow-derived MSCs. The successful co-expression of the two genes in the MSCs was confirmed using quantitative polymerase chain reaction (qPCR) and western blot analysis. The results of alizarin red and alkaline phosphatase (ALP) staining at 14 days subsequent to transfection showed that the area of staining in cells transfected with BMP2 alone was higher than that in cells transfected with BMP2 and VEGF165 or untransfected control cells, while the BMP2 + VEGF165 group showed significantly more staining than the untransfected control. This indicated that BMP2 alone exhibited a stronger effect in bone regeneration than BMP2 in combination with VEGF165. Similarly, in inducing culture medium, the ALP activity of the BMP2 + VEGF165 group was notably suppressed compared with that of the BMP2 group. The overexpression of VEGF165 inhibited BMP2-induced MSC differentiation and osteogenesis in vitro. Whether or not local VEGF gene therapy is likely to affect bone regeneration in vivo requires further investigation.

  5. Effect of vascular endothelial growth factor 165 gene transfection on bone defects and its mRNA expression in rabbits

    Institute of Scientific and Technical Information of China (English)

    ZHAO Dong-mei; WANG Hai-bin; YANG Jia-feng; WU Shi-qing; LIU Jun-li; XU Fu-yu; QIU Li-ping; CAI Jing-long

    2007-01-01

    Background Gene therapy has been a hot spot in repair of bone defects in recent years. This study aimed to construct a recombinant plasmid pcDNA3.1-VEGF165, and to observe the effect of vascular endothelial growth factor 165 (VEGF165)gene therapy on bone defects in rabbits.Methods Total RNA was extracted from rabbit bone tissues. VEGF165 cDNA fragment was prepared by reverse transcription and the gene was cloned by polymerase chain reaction (PCR). Plasmid pMD18-T/VEGF165 combined with pcDNA3.1 was cloned to reconstruct pcDNA3.1-VEGF165 plasmid. Thirty New Zealand white rabbits weighing (2.50±0.13)kg were used to establish models of bone defects (1 cm in length) of the bilateral radii. The bone defects were repaired with absorbable gelatin sponge. After the operation, physiological sodium chloride solution was injected into the injured site in one of the forelegs of the rabbits as the control group, and pcDNA3.1-VEGF165 plasmid (0.2 ml, 200 ng)was injected into the opposite foreleg as the experiment groups. At weeks 1, 2, 4, 6, 8, and 12 after the treatments, the bones were examined by X-ray, and the specimens of the bone defects were collected, stained with HE, and observed under a light microscope. The expression of VEGF165 mRNA was examined by real-time quantitative polymerase chain reaction (RQ-PCR).Results The pcDNA3.1-VEGF165 plasmid with a correct sequence was constructed successfully. Postoperative X-ray found no difference between the two groups at week 1. In the experiment group, callus and synostosis were observed after 2 weeks, and osteosis structure was normal at week 12; these phenomena occurred much later in the control group.In the experiment group, HE staining showed a large amount of newly formed blood vessels after 2 weeks, a number of bone trabeculae with osteoblasts proliferation at 4 weeks, and fresh bone cortex and reformed medullary cavity at 12 weeks; whereas in the control group these structures formed in later phases. The VEGF165 mRNA in

  6. Rapid Construction of EGFP Labled Recombinant Adenovirus Containing hVEGF165 and Its Expression in Haematopoietic Cells

    Institute of Scientific and Technical Information of China (English)

    仲照东; 邹萍; 黄士昂; 胡中波; 刘凌波; 卢运萍

    2003-01-01

    By using AdEasy system, which is based on the homologous recombination in bacteria, an EGFP labeled recombinant adenovirus vector containing hVEGF165 was constructed quickly and efficiently expressed in mouse haematopoietic cells. First, hVEGF165 coding sequence was subcloned into shuttle plasmid pAdTrack-CMV, then cotransformed with adenoviral backbone vector pAdEasy-1 into E. coli strain BJ5183. The recombinant adenoviral plasmid was transfected into HEK293 cells to assembly replication-defective adenovirus Ad-EGFP/hVEGF165. The expression of EGFP could be easily detected. The rate of EGFP positive mouse bone marrow mononuclear cells by flow cytometric analysis was 27.3 % (MOI= 100), and the expression of hVEGF165 protein in the supernatant was (1385+332) pg/106 cells. These results suggest that the construction of adenovirus vector by homologous recombination in bacteria features high efficiency and simplicity. The prepared high titer AdEGFP/hVEGF165 can be used an efficient helpful vector to infect hematopoietic cells.

  7. 视神经疾病165例病因分析%Etiological analysis of 165 cases of optic neuropathy

    Institute of Scientific and Technical Information of China (English)

    童绎; 王剑

    2009-01-01

    目的 探察视神经病变病因.方法 对同仁眼科中心神经眼科2005年1月至12月门诊随机统计165例视神经疾病患者.结果 眶颅外伤最多见,占18%,其次为Lebet视神经萎缩(LHON)占14.5%,颅内占位性病变占10%,前部缺血性视神经病变(AION)占9%,新生儿缺血缺氧脑病占8%.结论 国人视神经病变仍以眶颅外伤、颅内占位及前部缺血性视神经病变多见,感染性少见,LHON有增多趋势,儿童最常见为新生儿缺血缺氧脑病.%Objective To explore the causes of optic neuropathy.Methods One hundred and sixty-five cases of optic neuropathy were analysed in TongRen Eye Center from.Jan to Dec 2005.Results The main cause of optic neuropathy were orbit-cranial trauma(18%), followed by Leber hereditary optic neuropathy(LHON, 14.5%).Intracranial occupational diseases(IOD, 10%), anterior ischemic optic neuropathy(AION, 9 %).Neonatal ischemic encephalopathy(HIE, 8 %).Conclusion Trauma, IOD and AION are the most com-mon causes of optic neuropathy in China, infection caused optic neuropathy is rare.LHON turned to increasing, HIE is the most common optic neuropathy in children.

  8. Regulation of MIR165/166 by class II and class III homeodomain leucine zipper proteins establishes leaf polarity.

    Science.gov (United States)

    Merelo, Paz; Ram, Hathi; Pia Caggiano, Monica; Ohno, Carolyn; Ott, Felix; Straub, Daniel; Graeff, Moritz; Cho, Seok Keun; Yang, Seong Wook; Wenkel, Stephan; Heisler, Marcus G

    2016-10-18

    A defining feature of plant leaves is their flattened shape. This shape depends on an antagonism between the genes that specify adaxial (top) and abaxial (bottom) tissue identity; however, the molecular nature of this antagonism remains poorly understood. Class III homeodomain leucine zipper (HD-ZIP) transcription factors are key mediators in the regulation of adaxial-abaxial patterning. Their expression is restricted adaxially during early development by the abaxially expressed microRNA (MIR)165/166, yet the mechanism that restricts MIR165/166 expression to abaxial leaf tissues remains unknown. Here, we show that class III and class II HD-ZIP proteins act together to repress MIR165/166 via a conserved cis-element in their promoters. Organ morphology and tissue patterning in plants, therefore, depend on a bidirectional repressive circuit involving a set of miRNAs and its targets.

  9. 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

  10. 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

  11. Double K-shell-vacancy production in the decays of 181W and 165Er

    Science.gov (United States)

    van Eijk, C. W. E.; Wagenaar, J. P.; Bergsma, F.; Lourens, W.

    1982-11-01

    The probabilities PKK of double-K-shell-vacancy production per K-electron-capture decay of 181W and 165Er have been determined by means of Kα x-ray-K x-ray coincidence experiments: PKK=(2.4+/-0.6)×10-6 and PKK=(8.2+/-2.8)×10-6, respectively. The observed energy shifts of the hypersatellite Ta KαH1 x-ray and Ho KαH1 x-ray lines are 1026+/-62 eV and 930+/-70 eV, respectively. In the case of 181W, the theoretical PKK value deviates significantly from the above-mentioned experimental value. In combination with results from other experiments, this strongly suggests that, contrary to what the present theory predicts, PKK shows a considerable dependence on the ratio of transition energy to threshold energy.

  12. Chitosan microspheres loaded with holmium-165 produced by spray dryer for liver cancer therapy: preliminary experiments

    Energy Technology Data Exchange (ETDEWEB)

    Miyamoto, Douglas Massao; Pires, Geovanna; Lira, Raphael A. de; Melo, Vitor H.S.; Nascimento, Nanci; Azevedo, Mariangela de Burgos M. de, E-mail: douglas.miyamoto@usp.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil); Osso Junior, Joao Alberto [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil). Centro de Radiofarmacia

    2011-07-01

    Chitosan is a biopolymer of 2-deoxy-2-amino-D-glucose that is obtained by deacetylation of chitin. It's biocompatible, biodegradable, non toxic and has antitumor activity. Chitosan has many applications, such as their microparticles that can be used to treat prostate cancer, rheumatoid arthritis, and for liver tumor brachytherapy treatment. Our group is developing different biodegradable polymer-based microspheres loaded with holmium-165 for this purpose. The Chitosan microspheres were produced loaded with holmium (III) chloride, and not loaded with it, by Mini Spray Dryer procedure. The microspheres were evaluated by scanning electron microscopy, energy dispersive spectroscopy (EDS), confocal laser scanning microscopy, thermogravimetric analysis, particle size, and X-ray diffraction. The EDS analysis confirmed the holmium chloride presence into the prepared chitosan microparticles. (author)

  13. Star clusterings in the Carina complex UBVRI photometry of NGC 3324 and Loden 165

    CERN Document Server

    Carraro, G; Baumgardt, H

    2001-01-01

    We report on UBVRI photometry of two $5^{\\prime} \\times 5^{\\prime}$ fields in the region of the young open cluster NGC 3324. One of our fields covers the core region, while the other is closer to the tidal radius of the cluster. Our study provides the first CCD photometry of NGC 3324. We find that the cluster is very young and probably contains several pre Main Sequence (MS) stars. 25 members are identified on the basis of their position in the (U-B) vs (B-V) diagram. We investigate the relation of the red super-giant HD 92207 with NGC 3324, suggesting that it probably does not belong to the cluster. Our second field is close to Loden 165, a possible cluster of stars that has never been studied so far. We show that this object is a probable open cluster, much older than NGC 3324 and much closer to the Sun.

  14. Exploring arbitrarily high orders of optimized perturbation theory in QCD with nf -> 16.5

    CERN Document Server

    Stevenson, P M

    2016-01-01

    Perturbative QCD with nf flavours of massless quarks becomes simple in the hypothetical limit nf -> 16.5, where the leading beta-function coefficient vanishes. The Banks-Zaks (BZ) expansion in a0=(8/321)(16.5-nf) is straightforward to obtain from perturbative results in MSbar or any renormalization scheme (RS) whose nf dependence is `regular.' However, `irregular' RS's are perfectly permissible and should ultimately lead to the same BZ results. We show here that the `optimal' RS determined by the Principle of Minimal Sensitivity does yield the same BZ-expansion results when all orders of perturbation theory are taken into account. The BZ limit provides an arena for exploring optimized perturbation theory at arbitrarily high orders. These explorations are facilitated by a `master equation' expressing the optimization conditions in the fixed-point limit. We find an intriguing strong/weak coupling duality a -> a*^2/a about the fixed point a*.

  15. Hypothermia reduces VEGF-165 expression, but not osteogenic differentiation of human adipose stem cells under hypoxia

    Science.gov (United States)

    Bakker, Astrid D.; Hogervorst, Jolanda M. A.; Nolte, Peter A.; Klein-Nulend, Jenneke

    2017-01-01

    Cryotherapy is successfully used in the clinic to reduce pain and inflammation after musculoskeletal damage, and might prevent secondary tissue damage under the prevalent hypoxic conditions. Whether cryotherapy reduces mesenchymal stem cell (MSC) number and differentiation under hypoxic conditions, causing impaired callus formation is unknown. We aimed to determine whether hypothermia modulates proliferation, apoptosis, nitric oxide production, VEGF gene and protein expression, and osteogenic/chondrogenic differentiation of human MSCs under hypoxia. Human adipose MSCs were cultured under hypoxia (37°C, 1% O2), hypothermia and hypoxia (30°C, 1% O2), or control conditions (37°C, 20% O2). Total DNA, protein, nitric oxide production, alkaline phosphatase activity, gene expression, and VEGF protein concentration were measured up to day 8. Hypoxia enhanced KI67 expression at day 4. The combination of hypothermia and hypoxia further enhanced KI67 gene expression compared to hypoxia alone, but was unable to prevent the 1.2-fold reduction in DNA amount caused by hypoxia at day 4. Addition of hypothermia to hypoxic cells did not alter the effect of hypoxia alone on BAX-to-BCL-2 ratio, alkaline phosphatase activity, gene expression of SOX9, COL1, or osteocalcin, or nitric oxide production. Hypothermia decreased the stimulating effect of hypoxia on VEGF-165 gene expression by 6-fold at day 4 and by 2-fold at day 8. Hypothermia also decreased VEGF protein expression under hypoxia by 2.9-fold at day 8. In conclusion, hypothermia decreased VEGF-165 gene and protein expression, but did not affect differentiation, or apoptosis of MSCs cultured under hypoxia. These in vitro results implicate that hypothermia treatment in vivo, applied to alleviate pain and inflammation, is not likely to harm early stages of callus formation. PMID:28166273

  16. Studies of parity and time reversal symmetries in neutron scattering from165Ho

    Science.gov (United States)

    Haase, D. G.; Gould, C. R.; Koster, J. E.; Roberson, N. R.; Seagondollar, L. W.; Soderstrum, J. P.; Schneider, M. B.; Zhu, X.

    1988-12-01

    We describe searches for parity and time reversal violations in the scattering of polarized neutrons from polarized and aligned165Ho targets. We have completed a search with 7.1 and 11.0 MeV neutrons for PoddTodd terms in the elastic scattering forward amplitude of the form s. ( I×K), where s is the neutron spin, I is the target spin and k is the neutron momentum vector. The target was a single crystal of holmium, polarized horizontally along its b axis by a 1 Tesla magnetic field. The neutrons were polarized vertically. Differences in the neutron transmission were measured for neutrons with spins parallel (antiparallel) to I×k. The P,T violating analyzing powers were found to be consistent with zero at the few 10-3 level: ρP,T(7.1 MeV)=-0.88 (±2.02) x 10-3, ρP,T(11.0 MeV)=-0.4 (±2.88) x 10-3. We have also attempted to find enhancements with MeV neutrons in P-violation due to the term s k. We are preparing an aligned target cryostat for investigations of PevenTodd terms {bd(Ik)(I×k)s} in neutron scattering. The target will be a single crystal cylinder of165Ho cooled to 100 mK in a bath of liquid helium and rotated by a shaft from a room temperature stepping motor. The cylinder will be oriented vertically and the alignment ( c) axis oriented horizontally. Warming or rotation of the sample allows one to separate effects that mimic the sought-after time reversal violating term.

  17. Atypical Friedreich ataxia in patients with FXN p.R165P point mutation or comorbid hemochromatosis

    DEFF Research Database (Denmark)

    Ygland, Emil; Taroni, Franco; Gellera, Cinzia

    2014-01-01

    BACKGROUND: Compound heterozygosity for a trinucleotide repeat expansion and a point mutation in the FXN gene is a rare cause of Friedreich ataxia (FRDA). METHODS: We identified three Swedish FRDA patients with an FXN p.R165P missense mutation and compared their clinical features with six......, and were more independent in activities of daily living. One p.R165P mutation carrier developed psychosis. Frataxin levels were higher than in homozygous trinucleotide expansion patients. One patient with homozygous trinucleotide repeat expansions and comorbid hemochromatosis had more severe FRDA symptoms...

  18. Biochemical Characterization and Differential Expression of a 16.5-Kilodalton Tegument-Associated Antigen from the Liver Fluke Fasciola hepatica

    Science.gov (United States)

    Gaudier, José F.; Cabán-Hernández, Kimberly; Osuna, Antonio

    2012-01-01

    A cDNA encoding a 16.5-kDa protein termed FhTP16.5 was identified by immunoscreening of a cDNA library from Fasciola hepatica adult flukes using pooled sera from rabbits infected with F. hepatica for 4 weeks. Quantitative reverse transcriptase PCR (qPCR) analysis revealed that FhTP16.5 is not expressed in unembryonated eggs. It is poorly expressed in miracidia and highly expressed at the juvenile and adult stages; however, significant differences were found between the expression levels of FhTP16.5 in juveniles versus adult flukes. Recombinant FhTP16.5 was expressed at high levels in Escherichia coli, purified by affinity chromatography, and used to raise anti-FhTP16.5 polyclonal antibodies in rabbits. Immunoblot analysis using the anti-FhTP16.5 IgG antibody identified FhTP16.5 in crude and tegumental extracts and in excretory-secretory products of F. hepatica. The protein was not detected in crude extracts of Schistosoma mansoni or Schistosoma japonicum. Antibodies to FhTP16.5 were detected in the sera of rabbits at 3 to 12 weeks of F. hepatica infection as well as in the sera of humans with chronic fascioliasis; these findings suggest that FhTP16.5 could be a good antigen for serodiagnosis of fascioliasis. Immunohistochemistry demonstrated that FhTP16.5 localizes to the surface of the tegument of various developmental stages and in parenchymal tissues of the adult fluke. Such specific localization makes FhTP16.5 an attractive target for immunoprophylaxis or chemotherapy. PMID:22278327

  19. 33 CFR 165.1709 - Security Zones: Liquefied Natural Gas Tanker Transits and Operations at Phillips Petroleum LNG...

    Science.gov (United States)

    2010-07-01

    ... Gas Tanker Transits and Operations at Phillips Petroleum LNG Pier, Cook Inlet, AK. 165.1709 Section...: Liquefied Natural Gas Tanker Transits and Operations at Phillips Petroleum LNG Pier, Cook Inlet, AK. (a... navigable waters within a 1000-yard radius of the Liquefied Natural Gas (LNG) tankers during their...

  20. 33 CFR 165.763 - Moving and Fixed Security Zone, Port of Fredericksted, Saint Croix, U.S. Virgin Islands.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Moving and Fixed Security Zone... Areas Seventh Coast Guard District § 165.763 Moving and Fixed Security Zone, Port of Fredericksted, Saint Croix, U.S. Virgin Islands. (a) Location. A moving and fixed security zone is established...

  1. 33 CFR 165.818 - Moving Security Zones, for certain vessels in Freeport Entrance Channel, Freeport, Texas.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Moving Security Zones, for... Areas Eighth Coast Guard District § 165.818 Moving Security Zones, for certain vessels in Freeport... hundred (500) yards on each side of any vessel that has a moving security zone established around it....

  2. Construction and Operation of a 165K Microcooler with a Sorption Compressor and a Micromachined Cold Stage

    NARCIS (Netherlands)

    Burger, Johannes Faas; Holland, Herman J.; ter Brake, Hermanus J.M.; Elwenspoek, Michael Curt; Rogalla, Horst; Ross, R.G. jr

    2003-01-01

    This paper presents the integration and testing of a 165 K microcooler that operates with a sorption compressor and a micromachined cold stage. Attractive features of this combination are the lack of vibration and a long lifetime for a potentially very small cryocooler. The developed cold stage work

  3. 33 CFR 165.804 - Snake Island, Texas City, Texas; mooring and fleeting of vessels-safety zone.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Snake Island, Texas City, Texas... Guard District § 165.804 Snake Island, Texas City, Texas; mooring and fleeting of vessels—safety zone. (a) The following is a safety zone: (1) The west and northwest shores of Snake Island; (2)...

  4. Construction and Operation of a 165K Microcooler with a Sorption Compressor and a Micromachined Cold Stage

    NARCIS (Netherlands)

    Burger, J.F.; Holland, H.J.; Brake, ter H.J.M.; Elwenspoek, M.C.; Rogalla, H.; Ross, R.G. jr

    2003-01-01

    This paper presents the integration and testing of a 165 K microcooler that operates with a sorption compressor and a micromachined cold stage. Attractive features of this combination are the lack of vibration and a long lifetime for a potentially very small cryocooler. The developed cold stage work

  5. FAILURE OF Zr50Ti16.5Cu15Ni18.5 AMORPHOUS METALLIC RIBBON

    NARCIS (Netherlands)

    Miskuf, J.; Csach, K.; Jurikova, A.; Ocelik, V.; Bengus, V.; Tabachnikova, E.

    2008-01-01

    The deformation and fracture behavior of Zr50Ti16.5Cu15Ni18.5 bulk amorphous metal in the form of a thin ribbon have been determined in tensile test at room temperature. The fracture is localized in a major shear band and the fracture angle between the tensile stress axis and the fracture plane is c

  6. 33 CFR 165.760 - Security Zones; Tampa Bay, Port of Tampa, Port of Saint Petersburg, Port Manatee, Rattlesnake...

    Science.gov (United States)

    2010-07-01

    ... a vessel required to comply with 33 CFR part 120. Designated representative means Coast Guard Patrol... of Tampa, Port of Saint Petersburg, Port Manatee, Rattlesnake, Old Port Tampa, Big Bend, Weedon... § 165.760 Security Zones; Tampa Bay, Port of Tampa, Port of Saint Petersburg, Port Manatee,...

  7. 33 CFR 165.552 - Security Zone; Oyster Creek Generation Station, Forked River, Ocean County, New Jersey.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Oyster Creek... Coast Guard District § 165.552 Security Zone; Oyster Creek Generation Station, Forked River, Ocean... the Forked River in the vicinity of the Oyster Creek Generation Station, bounded by a line...

  8. A New Analysis of the Two Classical ZZ Ceti White Dwarfs GD 165 and Ross 548. II. Seismic Modeling

    Science.gov (United States)

    Giammichele, N.; Fontaine, G.; Brassard, P.; Charpinet, S.

    2016-03-01

    We present the second of a two-part seismic analysis of the bright, hot ZZ Ceti stars GD 165 and Ross 548. In this second part, we report the results of detailed searches in parameter space for identifying an optimal model for each star that can account well for the observed periods, while being consistent with the spectroscopic constraints derived in our first paper. We find optimal models for each target that reproduce the six observed periods well within ∼0.3% on the average. We also find that there is a sensitivity on the core composition for Ross 548, while there is practically none for GD 165. Our optimal model of Ross 548, with its thin envelope, indeed shows weight functions for some confined modes that extend relatively deep into the interior, thus explaining the sensitivity of the period spectrum on the core composition in that star. In contrast, our optimal seismic model of its spectroscopic sibling, GD 165 with its thick envelope, does not trap/confine modes very efficiently, and we find weight functions for all six observed modes that do not extend into the deep core, hence accounting for the lack of sensitivity in that case. Furthermore, we exploit after the fact the observed multiplet structure that we ascribe to rotation. We are able to map the rotation profile in GD 165 (Ross 548) over the outermost ∼20% (∼5%) of its radius, and we find that the profile is consistent with solid-body rotation.

  9. Construction and Operation of a 165K Microcooler with a Sorption Compressor and a Micromachined Cold Stage

    NARCIS (Netherlands)

    Burger, Johannes Faas; Holland, Herman J.; ter Brake, Hermanus J.M.; Elwenspoek, Michael Curt; Rogalla, Horst; Ross, R.G. jr

    2003-01-01

    This paper presents the integration and testing of a 165 K microcooler that operates with a sorption compressor and a micromachined cold stage. Attractive features of this combination are the lack of vibration and a long lifetime for a potentially very small cryocooler. The developed cold stage

  10. 78 FR 5209 - 165th Meeting of the Advisory Council on Employee Welfare and Pension Benefit Plans; Notice of...

    Science.gov (United States)

    2013-01-24

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF LABOR Employee Benefits Security Administration 165th Meeting of the Advisory Council on Employee Welfare and Pension... Council on Employee Welfare and Pension Benefit Plans (also known as the ERISA Advisory Council) will be...

  11. 33 CFR 165.122 - Regulated Navigation Area: Navigable waters within Narragansett Bay and the Providence River...

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Regulated Navigation Area... SAFETY REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS Specific Regulated Navigation Areas and Limited Access Areas First Coast Guard District § 165.122 Regulated Navigation Area: Navigable waters...

  12. 33 CFR 165.1310 - Strait of Juan de Fuca and adjacent coastal waters of Northwest Washington; Makah Whale Hunting...

    Science.gov (United States)

    2010-07-01

    ... adjacent coastal waters of Northwest Washington; Makah Whale Hunting-Regulated Navigation Area. 165.1310... and adjacent coastal waters of Northwest Washington; Makah Whale Hunting—Regulated Navigation Area. (a.... Datum: NAD 1983. (b) During a whale hunt, while the international numeral pennant five (5) is flown by a...

  13. 33 CFR 165.1122 - San Diego Bay, Mission Bay and their Approaches-Regulated navigation area.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false San Diego Bay, Mission Bay and... Coast Guard District § 165.1122 San Diego Bay, Mission Bay and their Approaches—Regulated navigation... waters of San Diego Bay, Mission Bay, and their approaches encompassed by a line commencing at Point La...

  14. 婴幼儿病毒性肺炎165例病原学分析%Etiology analysis of 165 infant patients with viral pneumonia

    Institute of Scientific and Technical Information of China (English)

    林加斌; 朱凯; 项跃林; 张德亭

    2010-01-01

    目的 了解婴幼儿病毒性肺炎的病原学概况与临床特点.方法 应用间接免疫荧光法(IIF)检测婴幼儿肺炎患儿急性期血清11种病毒[呼吸道合胞病毒(RSV),腺病毒(ADV),流感病毒(IFV-A+B),副流感病毒(PIVt-4),柯萨奇B1病毒(CB1V),柯萨奇A7病毒(CA7V),埃可病毒]特异性抗体IgM,按血清病毒特异性IgM阳性,C反应蛋白(CRP)<8 mg/L且无其他病原学感染的临床及实验室证据为条件检测436例肺炎患儿.结果 检出总抗体阳性165例,阳性检出率为37.99%.其中单一病毒感染103例,占82.4%,混合感染22例,占17.6%.RSV感染居首位,其余依次为IFV、ADV和PIV.婴幼儿不同年龄段,不同季节易感病毒的种类不同.结论引起婴幼儿肺炎的病原除细菌外,病毒感染的种类繁多,其发病的年龄、流行季节与临床表现各异.%Objective To comprehend etiology and clinical manifestation changes of infant pneumonia in this locality.Methods Indirect immunofluorescence (IIF) assay was applied in children with acute pneumonia to detect serum 11 kinds of viruses[respiratory syncytial virus (RSV),adenovirus (ADV),influenza virus (IFV-A+B),parain fluenza virus(PIV14) ,coxsackie B,virus(CB1V),Coxsackie A7 virus (CA7V) ,ECHO virus]specific antibody IgM,according to the serum virus-specific IgM positive,C-reactive protein(CRP)<8mg/L and no other pathogenic infection and laboratory evidence for the conditions of 436 cases detected in children with pneumonia.Results Detected a total 125 cases of antibody-positive,the positive detection rate is 37.99%.Of which 103 cases of single virus infection .accounting for 82.4% ,22 cases of mixed infection,accounting for 17.6%.RSV infection on top of the list followed by the rest of IFV,ADV and PIV.Infants of different ages,different seasons of the different types of virus susceptibility.Conclusion Pneumonia in infants were caused by pathogenic bacteria in addition to the virus of a wide range,and the incidence of age

  15. 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...

  16. 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...

  17. Faecalibacterium prausnitzii A2-165 has a high capacity to induce IL-10 in human and murine dendritic cells and modulates T cell responses

    NARCIS (Netherlands)

    Rossi, Oriana; van Berkel, Lisette A; Chain, Florian; Tanweer Khan, M; Taverne, Nico; Sokol, Harry; Duncan, Sylvia H; Flint, Harry J; Harmsen, Hermie J M; Langella, Philippe; Samsom, Janneke N; Wells, Jerry M

    2016-01-01

    Faecalibacterium prausnitzii strain A2-165 was previously reported to have anti-inflammatory properties and prevent colitis in a TNBS model. We compared the immunomodulatory properties of strain A2-165 to four different F. prausnitzii isolates and eight abundant intestinal commensals using human den

  18. Faecalibacterium prausnitzii A2-165 has a high capacity to induce IL-10 in human and murine dendritic cells and modulates T cell responses

    NARCIS (Netherlands)

    O. Rossi (Oriana); L.A. van Berkel (Lisette); F. Chain (Florian); M. Tanweer Khan; N. Taverne (Nico); H. Sokol (Harry); S.H. Duncan (Sylvia H.); H.J. Flint (Harry J.); H.J.M. Harmsen (Hermie J. M.); P. Langella (Philippe); J.N. Samsom (Janneke); J.M. Wells (Jerry)

    2016-01-01

    textabstractFaecalibacterium prausnitzii strain A2-165 was previously reported to have anti-inflammatory properties and prevent colitis in a TNBS model. We compared the immunomodulatory properties of strain A2-165 to four different F. prausnitzii isolates and eight abundant intestinal commensals usi

  19. 技嘉GV-RX165P256D-RH显卡

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    技嘉GV-RX165P256D-RH基于ATi X1650 Pro核心.核心代号RV530LE.核心频率590MHz。显存部分采用四颗英飞凌编号为HYB18H512321AF-14的显存颗粒.从编号上看.单颗显存为64MB/32bit规格.组成了256MB/128bit的显存系统。显存的额定工作频率是1.4GHz.和显卡设定的默认工作频率一致.所以显存在超频方面不具备太大的超频潜力.不过相对于目前市场上其他的X1650 Pro系列显卡.显存频率能达到1.4GHz.已经占有一定优势了。

  20. Molecular screening of selected long QT syndrome (LQTS) mutations in 165 consecutive bodies found in water.

    Science.gov (United States)

    Lunetta, Philippe; Levo, Antti; Laitinen, Päivi J; Fodstad, Heidi; Kontula, Kimmo; Sajantila, Antti

    2003-04-01

    The association of the long QT-syndrome (LQTS) with single accidental drowning or near-drowning cases has been recently emphasised, but no data on the prevalence of LQTS among drowning victims are currently available. In this study, we have retrospectively screened specific founder mutations in KCNQ1 (KVLQT1) and KCNH2 (HERG) genes in 165 consecutive bodies found in water in Finland. We found a KCNH2-Fin mutation in a 44-year-old woman whose death was classified as suicidal drowning, whereas no other carriers of the two LQTS founder mutations were identified among the remaining 164 victims. This study provides the first estimate of the minimum prevalence of LQTS (0.61%, CI(95): 0.02-3.33) in such a setting and demonstrates the value of genetic analysis of LQTS in putative drownings. The detection of a LQTS founder mutation in a body found in water is a relatively rare event based on our study sample. This finding is, however, of utmost medico-legal importance, since it broadens the spectrum of potential causes and manners of death.

  1. Multi-shock Shield Performance at 16.5 MJ for Catalogued Debris

    Science.gov (United States)

    Miller, J. E.; Christiansen, E. L.; Davis, B. A.

    2014-01-01

    While orbital debris of ten centimeters or more are tracked and catalogued, the difficulty of finding and accurately accounting for forces acting on the objects near the ten centimeter threshold results in both uncertainty of their presence and location. These challenges result in difficult decisions for operators balancing potential costly operational approaches with system loss risk. In this paper, numerical simulations and an experiment using the multi-shock shield system is described for a cylindrical projectile composed of Nylon, aluminum and void that is approximately 8 cm in diameter and 10 cm in length weighing 670 g impacting the multi-shock shield normal to the surface with approximately 16.5 MJ of kinetic energy. The multi-shock shield system has been optimized to facilitate the fragmentation, spread and deceleration of the projectile remnants using hydrodynamic simulations of the impact event. The characteristics and function of each of the layers of the multi-shock system will be discussed along with considerations for deployment and improvement.

  2. Production of 16.5% v/v ethanol from seagrass seeds.

    Science.gov (United States)

    Uchida, Motoharu; Miyoshi, Tatsuo; Kaneniwa, Masaki; Ishihara, Kenji; Nakashimada, Yutaka; Urano, Naoto

    2014-12-01

    Ethanol fermentation on seeds of seagrass Zostera marina was studied. The seeds were collected from the annual plant colony of Z. marina at Hinase Bay, Okayama. The seeds contained 83.5% carbohydrates including 48.1% crude starch on a dry weight basis, which is comparable to cereals such as wheat flour and corns. The seeds were saccharified with glucoamylase (50°C, 96 h) and 103.4 g/l concentration of glucose juice was obtained. The glucose juice was further fermented (23°C-35°C, 15 days) with Saccharomyces cerevisiae strains NBRC10217(T) and Kyokai 7-go, and ethanol was obtained at a 65.0 g/l (82.3 ml/l) level by monographic double-fermentation and at a 130.4 g/l (165.1 ml/l) level by parallel double-fermentation. Fermented products of seagrass seeds containing such a high ethanol concentration as the present study have potential to be utilized not only for biofuel but also for foods and beverages in the future. Culturing of seagrass seeds as a crop may enable development of a new marine fermentation industry.

  3. 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.

  4. Clinical analysis of craniocerebral trauma complicated with thoracoabdominal injuries in 2 165 cases

    Institute of Scientific and Technical Information of China (English)

    陈卫群; 王刚; 赵万; 何亮珍

    2004-01-01

    Objective: To explore the optimal treatment for craniocerebral trauma complicated with thoraco-abdominal injuries.Methods: A total of 2 165 cases of craniocerebral trauma complicated with thoraco-abdominal injuries admitted to our hospital between July 1993 and June 2003 were retrospectively studied. Among them, 382 cases sustained severe craniocerebral trauma (in which 167 were complicated with shock ), 733 thoracic injuries, 645 abdominal injuries and 787 thoraco-abdominal injuries. On admittance, 294 cases had developed shock. With the prime goal of saving life, respiratory and circulatory systems and encephalothilipsis were especially treated and monitored.Priority in management was directed to severe or open injures rather than to moderate or closed injures. For cases with cerebral hernia due to intracranial hematoma and severe shock due to blood loss, cerebral hernia and shock were treated concurrently.Results: After treatment, 2024 ( 93.49 % ) cases survived and the other 141 (6.51%) died. Among patients who had severe craniocerebral injury with shock and those without, 78 (46.71%) and 53 (24.56%) died,respectively. For patients who had underwent craniocerebral and thoraco-abdominal operations concurrently and those who had not, the death rates were 58.49%-65.96% and 28.57 % respectively, indicating a significant difference ( P < 0.05 ).Conclusions: Treatment for hematoma hernia, shock and disturbed respiration is the key in the management of multiple trauma of craniocerebral, thoracic or abdominal injuries, especially when two or three conditions occurred simultaneously. Unless it is necessary, operations at two different parts at the same time is not recommended. It is preferred to start two concurrent operations at different time.

  5. The Chiropteran Brain Database: Volumetric Survey of the Hypophysis in 165 Species.

    Science.gov (United States)

    Bhatnagar, Kunwar P; Smith, Timothy D; Rai, Shesh N; Frahm, Heiko D

    2016-04-01

    For nearly two decades, a database of brain structures from a large sample (272 species) of chiropterans has been widely accessible and used for socioecological analyses of mammals. However, this database remains incomplete since the hypophysis has not been measured. Since this glandular/neural structure has reproductive significance to chiropterans as for other mammals, this investigation was carried out using serial coronal sections of bat brains comprising the Heinz Stephan collection, Düsseldorf, Germany. Complete serially sectioned brains were examined in 313 individuals (165 species, 15 families). Using a well-documented method, hypophyseal volumes were determined from every fourth or sixth section in each individual. The strongest correlation was between body weight and the hypophysis (R(2) = 0.887) and its various components as well as between body weight and adenohypophysis (R(2) = 0.830) and neurohypophysis (R(2) = 0.925). Correlations were also strong for brain weight-adenohypophysis (R(2) = 0.817) and brain weight- neurohypophysis (R(2) = 0.911). Results indicated that: (1) in regression analyses, hipposiderids stand apart as having relatively large adenohypophysis; (2) analysis of residuals generated using least-squares regression of hypophyseal components suggests a trend among microchiropterans where females have a relatively larger adenohypophysis than males. However, this difference is only statistically significant in the largest samples: Phyllostomidae and Vespertilionidae. Pteropodids do not appear to follow this trend. Our findings suggest both phylogenetic and sexual differences in the adenohypophysis in particular, and indicate the need for investigation of larger samples by species, especially those best understood in reproductive and social biology.

  6. Turbulence characterization and image processing data sets from a NATO RTO SET 165 trial in Dayton, Ohio, USA

    Science.gov (United States)

    Velluet, M.-T.; Vorontsov, Mikhail; Schwering, Piet; Marchi, Gabriele; Nicolas, Stephane; Riker, Jim

    2012-06-01

    The performance of optical systems is degraded by atmospheric turbulence. Over propagation distances that exceed several kilometers, it is difficult to evaluate its impact because of terrain variability - a factor that should be taken into account. However, to optimize performance, the turbulence characteristics and its effect on optical wave propagation along the propagation path should be known. The understanding of turbulence impact is one of the main objectives of the NATO group SET 165: "Adaptive Optics (AO) for laser beam delivery, passive and active imaging and turbulence mitigation". In this paper we describe experiments performed by the NATO SET 165 research group, namely, a set of atmospheric experiments over a 7 km distance, and discuss some preliminary results of data processing. The experiments were conducted at the University of Dayton Intelligent Optics Laboratory (UD/IOL) in October 2011. It benefited significantly from the available optical setups and the infrastructure on the UD/IOL site.

  7. Experimental Study of Adenovirus Vector Mediated-hVEGF165 Gene on Prevention of Restenosis after Angioplasty

    Institute of Scientific and Technical Information of China (English)

    刘启功; 陆再英; 岳远坤; 林立; 张卫东; 颜进

    2004-01-01

    This study evaluated the effects of adenovirus vector mediated human vascular endothelial growth factor-165 (hVEGF165) gene on prevention of restenosis after angioplasty. Rabbit models of bilateral carotid artery injury were established by balloon denudation. The recombinant adenoviruses containing hVEGF165 cDNA was directly injected into left side of the injured carotid arteries.On day 3 and week 3 after transfection the expression of VEGF was observed by RT-PCR and immunohistochemistry. The thrombokinesis, reendothelialization (rET) and intimal hyperplasia in carotid arteries were evaluated by computerized image analysis system 3 weeks after gene transfer.The changes in the VEGF gene-treated side were compared with the control side. Our results showed that 3 days and 3 weeks after hVEGF165 gene transfer the VEGF mRNA and antigen expression were detected in vivo. 3 weeks after the transfer, the carotid artery rET was markedly better in the VEGF gene-treated group compared with the control. The thrombokinesis, intima area/media area (I/M), maximal intimal and medial thicknesses (ITmax and MTmax) demonstrated a statistically significant decrease in arteries treated with VEGF gene as compared with the control group. It is concluded that VEGF gene transfer could be achieved by intra-arterial injection of recombinant adenoviruses. It might accelerate the restoration of endothelial integrity, inhibit thrombokinesis and attenuate intimal hyperplasia in the injured arteries after VEGF gene transfer. This procedure could be useful in preventing restenosis after angioplasty.

  8. A NEW ANALYSIS OF THE TWO CLASSICAL ZZ CETI WHITE DWARFS GD 165 AND ROSS 548. II. SEISMIC MODELING

    Energy Technology Data Exchange (ETDEWEB)

    Giammichele, N.; Fontaine, G.; Brassard, P. [Département de Physique, Université de Montréal, Montréal, QC H3C 3J7 (Canada); Charpinet, S. [Université de Toulouse, UPS-OMP, IRAP, Toulouse F-31400 (France)

    2016-03-15

    We present the second of a two-part seismic analysis of the bright, hot ZZ Ceti stars GD 165 and Ross 548. In this second part, we report the results of detailed searches in parameter space for identifying an optimal model for each star that can account well for the observed periods, while being consistent with the spectroscopic constraints derived in our first paper. We find optimal models for each target that reproduce the six observed periods well within ∼0.3% on the average. We also find that there is a sensitivity on the core composition for Ross 548, while there is practically none for GD 165. Our optimal model of Ross 548, with its thin envelope, indeed shows weight functions for some confined modes that extend relatively deep into the interior, thus explaining the sensitivity of the period spectrum on the core composition in that star. In contrast, our optimal seismic model of its spectroscopic sibling, GD 165 with its thick envelope, does not trap/confine modes very efficiently, and we find weight functions for all six observed modes that do not extend into the deep core, hence accounting for the lack of sensitivity in that case. Furthermore, we exploit after the fact the observed multiplet structure that we ascribe to rotation. We are able to map the rotation profile in GD 165 (Ross 548) over the outermost ∼20% (∼5%) of its radius, and we find that the profile is consistent with solid-body rotation.

  9. Transplantation of bone marrow stromal cells overexpressing human vascular endothelial growth factor 165 enhances tissue repair in a rat model of radiation-induced injury

    Institute of Scientific and Technical Information of China (English)

    Wang Tao; Liao Tian'an; Wang Hong; Deng Wei; Yu Dahai

    2014-01-01

    Background The multilineage differentiation potential ability of bone marrow stromal cells (BMSCs) showed great potential in tissue engineering,while vascular endothelial growth factor 165 (VEGF165) promotes vasculogenesis and further promotes tissue regeneration.This study aimed to assess the ability of rat BMSCs expressing human VEGFA165 (hVEGF165) to promote tissue repair in rat model of radiation-induced injury.Methods Rat BMSCs were isolated from the tibia.Plasmid DNA expressing hVEGF165 was stably transfected into BMSCs using liposomes.The right hindlimb muscle of 40 rats was irradiated using a 60Co y source (total dose 30 Gy).The animals were divided into four groups (n=10):not injected with BMSCs (control; group 1) or intramuscularly injected two times (once in 2 weeks) with pcDNATM3.1-transfected BMSCs (group 2),untransfected BMSCs (group 3),or hVEGF165-transfected BMSCs (group 4).Angiography was performed 1 week after the last injection of BMSCs; samples of the hindlimb muscle were subjected to transmission electron microscopy,ultrastructural analysis,reverse transcription-PCR (RT-PCR),Western blotting,and immunohistochemistry.Results Rat BMSCs with multipotent differentiation capacity were isolated,hVEGF165-transfected BMSCs overexpressed hVEGF165 mRNA and protein.Injection of BMSCs (groups 2-4) increased the average vessel number,density,diameter,and cross-sectional area; mRNA expression of the myogenic markers including myoblast determination protein,myogenin,and α-smooth muscle actin; and CD31 protein expression; and promoted the repair of blood vessels and myofibers after radiation-induced injury compared to group 1; each of these parameters and hVEGF165 mRNA or protein expression were markedly improved in rats injected with hVEGF165-transfected BMSCs compared to groups 2 and 3.Conclusions BMSCs expressing hVEGF165 enhanced the repair of radiation-induced tissue injury by promoting vasculogenesis and muscle fiber regeneration.BMSCs expressing h

  10. Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from time series observations using Bubble type equilibrator for autonomous carbon dioxide (CO2) measurement, Carbon dioxide (CO2) gas analyzer and other instruments from TAO165E8S and TAO165E_8S in the South Pacific Ocean from 2009-06-22 to 2011-11-15 (NODC Accession 0117073)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0117073 includes chemical, meteorological, physical and time series data collected from TAO165E8S and TAO165E_8S in the South Pacific Ocean from...

  11. New outburst of the symbiotic nova AG Pegasi after 165 yr

    Science.gov (United States)

    Skopal, A.; Shugarov, S. Yu.; Sekeráš, M.; Wolf, M.; Tarasova, T. N.; Teyssier, F.; Fujii, M.; Guarro, J.; Garde, O.; Graham, K.; Lester, T.; Bouttard, V.; Lemoult, T.; Sollecchia, U.; Montier, J.; Boyd, D.

    2017-08-01

    Context. AG Peg is known as the slowest symbiotic nova, which experienced its nova-like outburst around 1850. After 165 yr, during June of 2015, it erupted again showing characteristics of the Z And-type outburst. Aims: The primary objective is to determine basic characteristics, the nature and type of the 2015 outburst of AG Peg. Methods: We achieved this aim by modelling the spectral energy distribution using low-resolution spectroscopy (330-750 nm; R = 500-1000), medium-resolution spectroscopy (420-720 nm; R 11 000), and UBVRCIC photometry covering the 2015 outburst with a high cadence. Optical observations were complemented with the archival HST and FUSE spectra from the preceding quiescence. Results: During the outburst, the luminosity of the hot component was in the range of 2-11 × 1037 (d/ 0.8 kpc)2 erg s-1, being in correlation with the light curve (LC) profile. To generate the maximum luminosity by the hydrogen burning, the white dwarf (WD) had to accrete at 3 × 10-7 M⊙ yr-1, which exceeds the stable-burning limit and thus led to blowing optically thick wind from the WD. We determined its mass-loss rate to a few × 10-6 M⊙ yr-1. At the high temperature of the ionising source, 1.5-2.3 × 105 K, the wind converted a fraction of the WD's photospheric radiation into the nebular emission that dominated the optical. A one order of magnitude increase of the emission measure, from a few × 1059 (d/ 0.8 kpc)2 cm-3 during quiescence, to a few × 1060 (d/ 0.8 kpc)2 cm-3 during the outburst, caused a 2 mag brightening in the LC, which is classified as the Z And-type of the outburst. Conclusions: The very high nebular emission and the presence of a disk-like H I region encompassing the WD, as indicated by a significant broadening and high flux of the Raman-scattered O vi 6825 Å line during the outburst, is consistent with the ionisation structure of hot components in symbiotic stars during active phases. Full Table 1 and Table 6 are only available at the CDS are

  12. 放置活性元宫IUD与药铜165 IUD24个月临床效果观察

    Institute of Scientific and Technical Information of China (English)

    张淑莹; 林彩菊

    2006-01-01

    目的:观察活性元宫IUD临床效果.方法:选择放置活性元宫IUD者150例,临床观察使用24个月的妊娠率、脱落率、因症取出率及续用率,并与药铜165 IUD进行比较,于放置后6个月、12个月、24个月进行随访.结果:活性元宫IUD使用24个月的妊娠率,脱落率明显低于药铜165 IUD,因症取出率亦低于药铜165 IUD,而续用率明显高于药铜165 IUD.结论:活性元宫IUD是效果理想的IUD.

  13. Clinical Statistic Analysis in Tension-free Repair of Abdominal Wall Hernias in 165 Cases%165例腹外疝无张力修补术的临床统计分析

    Institute of Scientific and Technical Information of China (English)

    冯文清

    2011-01-01

    To discuss the clinical effect on tension-free repair of abdominal wall hernias and its application value,clinical data on 165 cases of tension-free repair of abdominal wal1 hernias were compared as well as the application of their main modus operandi,such as Litchtenstein operation,Rutkow and IPOM(intraperitoneal onlay mesh) operation in the applied situation,respectively.The results show that all the sufferers of 165 cases didn't recrudesce in from half year to four years after the operation.There are no obvious statistic difference in hospital days,incidence rate of complication,recurernce rates between 102 side Lichtenstein operation,59 side Rutkow operation and 102 side IPOM operation,but there are obvious statistic differences in material costs,operation fees and the total expenditures of treatment in hospital(P〈0.05).To compare with the traditional repair of abdominal wal1 hernias,tension-free one has more credible curative effect,with less pain after operation,quicker recovery and lower recurrent rate.Litchtenstein operation is simpler,with lower expenditure and wider indications than Rutkow and IPOM ones,which is especially feasible for promotion in primary hospitals.%为了探讨腹外疝无张力修补术的临床疗效、运用价值,对比分析了165例无张力修补术的临床资料及其主要术式的应用情况.结果显示:165例腹外疝患者行无张力疝修补术后随访6~48个月均无复发;102例/侧Lichtenstein手术5、9例/侧Rutkow手术和12例/侧IPOM手术在住院天数、并发症发生率、复发率等方面的统计学差异并不明显(P〉0.05);材料费、手术费以及总治疗费用差异均达到显著水平(P〈0.05).与传统腹外疝修补术相比,无张力修补术疗效可靠,术后疼痛轻,恢复快,复发率低;其中,Lichtenstein手术较RutkowI、POM手术费用更低,且操作简单、适应症宽,尤其适合在基层医院推广.

  14. Analysis of mortality causes for 165 type 2 diabetics:an autopsy study%死亡2型糖尿病患者165例临床及病理分析

    Institute of Scientific and Technical Information of China (English)

    李琳; 李春霖; 田慧; 韦立新

    2011-01-01

    Objective To analyze the main mortality causes and pathological characteristics of type 2 diabetics with autopsy findings.Methods A total of 165 autopsy reports of type 2 diabetics were retrospectively reviewed and summarized at our institution.And 165 non-diabetics during the same period were analyzed similarly.Results The clinical data showed that type 2 diabetics had a higher risk for coronary heart disease,hypertension,stroke,hyperlipidemia and renal diseases than non-diabetics(P0.05).The three major mortality causes were malignant neoplasms(39.4%,n=65),circulatory system diseases(35.2%,n=58)and respiratory system diseases(9.1%,n=15).Conclusion The onset of malignant tumors,especially gastrointestinal one,should be monitored closely during the prevention and treatment of cardiocerebrovascular diseases and complications.%目的 分析尸体解剖糖尿病患者死亡的主要原因及主要病理改变特点.方法 对1988--2000年在解放军总医院死亡并行尸体解剖的165例糖尿病患者进行回顾性分析,并与同期死亡并行尸体解剖的165例非糖尿病患者进行比较.结果 临床诊断提示糖尿病患者冠心病、高血压、脑卒中、血脂异常、肾脏疾病的发生率均显著高于非糖尿病患者(P0.05).糖尿病患者的前3位主要病理死亡原因依次是恶性肿瘤39.4%(n=65),循环系统疾病35.2%(n=58)及呼吸系统疾病9.1%(n=15).结论 恶性肿瘤及循环系统疾病是糖尿病患者死亡的主要原因.

  15. Nosocomial infection among 165 patients with vascular dementia:a clinical analysis%165例血管性痴呆患者医院感染临床分析

    Institute of Scientific and Technical Information of China (English)

    张玲

    2011-01-01

    目的 了解血管性痴呆患者医院感染情况,探讨其相关危险因素,以便采取有效的控制措施.方法 对2008年6月-2009年10月住院的165例血管性痴呆患者发生医院感染的情况进行回顾性分析.结果 165例血管性痴呆患者发生医院感染66例,感染率40.0%,大部分发生在住院4周以后,以呼吸道感染最多,占60.6%,老龄、住院时间长、瘫痪卧床、抗菌药物不合理应用与医院感染的发生相关.结论 血管性痴呆患者的医院感染发生率高,应积极治疗原发病和并发症,控制相关危险因素,有效减少医院感染的发生.%OBJECTIVE To investigate the nosocomal infection situation in mental disorders due to vascular disease,and explore the risk factors of nosocomial infection to obtain the methods of infection control. METHODS An retrospective analysis of nosocomial infection situation was accomplished among 165 cases in our department ward from Jun 2008 to Oct 2009. RESULTS Sixty nosocomial infection cases were found among 165 cases. The nosocomial infection rate was 40.0 %. Nosocomial infection mostly took place after 4 weeks duration. Among inpatients with nosocomial infection, the respiratory tract infection was the highest (60.6 %) Nosocomial infection was closely related with such factors as the old age, hospitalization days, disorder of consciousness, antibiotic prophylaxis. CONCLUSION Nosocomial infection is still a highly frequent complication in mental disorders due to vascular disease. It is urgent to treat the underlying disease and complication and control the risk factors to effectively reduce the occurrence of nosocomial infection.

  16. Faecalibacterium prausnitzii A2-165 has a high capacity to induce IL-10 in human and murine dendritic cells and modulates T cell responses.

    Science.gov (United States)

    Rossi, Oriana; van Berkel, Lisette A; Chain, Florian; Tanweer Khan, M; Taverne, Nico; Sokol, Harry; Duncan, Sylvia H; Flint, Harry J; Harmsen, Hermie J M; Langella, Philippe; Samsom, Janneke N; Wells, Jerry M

    2016-01-04

    Faecalibacterium prausnitzii strain A2-165 was previously reported to have anti-inflammatory properties and prevent colitis in a TNBS model. We compared the immunomodulatory properties of strain A2-165 to four different F. prausnitzii isolates and eight abundant intestinal commensals using human dendritic cells (DCs) and mouse BMDCs in vitro. Principal component analysis revealed that the cytokine response to F. prausnitzii A2-165 is distinct from the other strains in eliciting high amounts of IL-10 secretion. The mouse DNBS model of relapsing IBD was used to compare the protective effects of F. prausnitzii A2-165 and Clostridium hathewayi, a low secretor of IL-10, on the Th1-driven inflammatory response to DNBS; attenuation of disease parameters was only observed with F. prausnitzii. In an in vivo mouse model of nasal tolerance to ovalbumin, F. prausnitzii A2-165 enhanced ovalbumin-specific T cell proliferation and reduced the proportion of IFN-γ(+) T cells in CLNs. Similarly, in vitro F. prausnitzii A2-165 stimulated BMDCs increased ovalbumin-specific T cell proliferation and reduced the number of IFN-γ(+) T cells. These mechanisms may contribute to the anti-inflammatory effects of F. prausnitzii in colitis and support the notion that this abundant bacterium might contribute to immune homeostasis in the intestine via its anti-inflammatory properties.

  17. Study on structure and magnetic entropy changes of Ce2-xPrxFe16.5Co0.5 alloys

    Institute of Scientific and Technical Information of China (English)

    ZHONG Xichun; ZENG Dechang; LUO Zhijian

    2006-01-01

    A series of Ce2-xPrxFe16.5Co0.5 alloys were preparedby arc melting under purified argon atmosphere. The structure and magnetic entropy changes in Ce2-xPrxFe16.5Co0.5 alloys were investigated by means of X-ray diffraction pattern and MPMS XL-7 magnetometer. The experimental results show that the crystal structure of Ce2-xPrxFe16.5Co0.5 alloys keeps in TH2Zn17-type rhombohedral, and the Curie temperature of Ce2-xPrxFe16.5Co0.5 alloys can be shifted to room temperature around by a composition adjustment. The magnetic entropy changes (-ΔSM) in Ce2-xPrxFe16.5Co0.5 alloys are relatively large, and a platform of magnetic entropy changes appearsnear the temperature TC. Ce2-xPrxFe16.5Co0.5 alloys are the potential working media for magnetic refrigeration with their stable chemical properties and especially low price.

  18. Observation of the (π-, π-n) and (π+, π+p) reactions at 165 MeV

    Science.gov (United States)

    Piasetzky, E.; Altman, A.; Lichtenstadt, J.; Yavin, A. I.; Ashery, D.; Bertl, W.; Felawka, L.; Walter, H. K.; Schlepütz, F. W.; Powers, R. J.; Winter, R. G.; v. D. Pluym, J.

    1982-08-01

    The (π-, π-n) and the (π+, π+p) reactions were studied on C, Fe, and Bi at 165 MeV by coincidence measurement o outgoing particles. The nucleon-knockout reaction is the dominant inelastic process at backward pion-scattering angles at this energy. The quasifree (π-, π-n) and (π+, π+p) cross sections were determined from the π-N an correlations. Their σqf(π-, π-n)/σqf(π+, π+p) ratio is consistent with unity for C and is larger than the N/Z ratio for the heavier nuclei.

  19. Construction of Lentivirus Vector of hVEGF165 Gene and Its Protective Function of Irradiation-induced Apoptosis%人血管内皮生长因子165慢病毒载体的构建及其抗放射所致细胞凋亡的作用

    Institute of Scientific and Technical Information of China (English)

    赵仲艳; 韦映梅; 黎祥喷; 吕瑞妍; 肖颂华; 刘中霖; 邢诒刚; 刘军

    2011-01-01

    摘要:[目的]构建人血管内皮生长因子165 (hVEGF165)慢病毒表达载体pCDH-CMV-MCS-EF1-copGFPhVEGF165,并转染至HT22细胞,并迸一步观察其对放射线损伤所致的细胞凋亡的保护作用.[方法]PCR扩增hVEGF165基因,克隆到pCDH-CMV-MCS-EF1-copGFP载体;通过酶切电泳,菌落PCR初步筛选和测序鉴定构建的pCDH-CMV-MCS-EF-GFP1-hVEGF165重组载体;采用磷酸钙共转染法转染293T细胞包装制备慢病毒液,并感染HT22细胞,采用实时RT-PCR及Western Blot检测hVEGF165基因在HT22细胞中的表达情况.进一步对单纯HT22细胞、空质粒转染组以及hVEGF165转染组HT22细胞进行0、5、10 Gy的X线照射,流式细胞仪检测细胞凋亡情况.[结果]hVEGF165基因片段重组到pCDH-CMV-MCS-EF1-copGFP载体,酶切后电泳结果显示均能得到与理论大小相符的片段,测序结果与GenBank序列完全一致,转染HT22后hVEGF mRNA及蛋白表达水平明显增高.而且同各对照组相比,hVEGF165可以降低细胞放疗后的凋亡率.[结论]pCDH-CMV-MCS-EF1 -copGFP-hVEGF165慢病毒表达载体构建成功,其转染HT22细胞后可获得高水平hVEGF165 mRNA和蛋白的表达,hVEGF165具有抗放射所致细胞凋亡的作用.%[Objective] To construct human vascular endothelial growth factor-165 (hVEGF165) gene lentivirus expression vector pCDH-CMV-MCS-Efl-copGFP-hVEGF165, and detect its expression after transfected into HT22 cells and further observe its effect of anti-apopotosis induced by irradiation. [Methods] hVEGF165 gene cDNA was amplicated by polymerase chain reaction (PCR) and cloned into the pCDHCMVMCSEF vector. Reconstructed pCDH-CMV-MCS-Efl -hVEGF165 plasmid was identified by electromigratory analysis, colony PCR, and sequencing analysis. 293T cells were transfected with recombinate vector using the way of calcium phosphate cotransfection to get lentiviral particles. Lentiviral particles were then transfect them into HT22 cells. Real-time RT-PCR and Western blot were

  20. Sulfated polysaccharides identified as inducers of neuropilin-1 internalization and functional inhibition of VEGF165 and semaphorin3A

    Science.gov (United States)

    Narazaki, Masashi; Segarra, Marta

    2008-01-01

    Neuropilin-1 (NRP1) and NRP2 are cell surface receptors shared by class 3 semaphorins and vascular endothelial growth factor (VEGF). Ligand interaction with NRPs selects the specific signal transducer, plexins for semaphorins or VEGF receptors for VEGF, and promotes NRP internalization, which effectively shuts down receptor-mediated signaling by a second ligand. Here, we show that the sulfated polysaccharides dextran sulfate and fucoidan, but not others, reduce endothelial cell-surface levels of NRP1, NRP2, and to a lesser extent VEGFR-1 and VEGFR-2, and block the binding and in vitro function of semaphorin3A and VEGF165. Administration of fucoidan to mice reduces VEGF165-induced angiogenesis and tumor neovascularization in vivo. We find that dextran sulfate and fucoidan can bridge the extracellular domain of NRP1 to that of the scavenger receptor expressed by endothelial cells I (SREC-I), and induce NRP1 and SREC-I coordinate internalization and trafficking to the lysosomes. Overexpression of SREC-I in SREC-I–negative cells specifically reduces cell-surface levels of NRP1, indicating that SREC-I mediates NRP1 internalization. These results demonstrate that engineered receptor internalization is an effective strategy for reducing levels and function of cell-surface receptors, and identify certain sulfated polysaccharides as “internalization inducers.” PMID:18272814

  1. Structure of the ThDP-dependent enzyme benzaldehyde lyase refined to 1.65 Å resolution

    Energy Technology Data Exchange (ETDEWEB)

    Maraite, Andy; Schmidt, Thomas; Ansörge-Schumacher, Marion B. [Department of Biotechnology, Faculty of Natural Sciences, RWTH Aachen University, Worringerweg 1, 52074 Aachen (Germany); Brzozowski, A. Marek; Grogan, Gideon, E-mail: grogan@ysbl.york.ac.uk [Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5YW (United Kingdom); Department of Biotechnology, Faculty of Natural Sciences, RWTH Aachen University, Worringerweg 1, 52074 Aachen (Germany)

    2007-07-01

    The X-ray crystal structure of the ThDP-dependent enzyme benzaldehyde lyase has been refined to 1.65 Å. Benzaldehyde lyase (BAL; EC 4.1.2.38) is a thiamine diphosphate (ThDP) dependent enzyme that catalyses the enantioselective carboligation of two molecules of benzaldehyde to form (R)-benzoin. BAL has hence aroused interest for its potential in the industrial synthesis of optically active benzoins and derivatives. The structure of BAL was previously solved to a resolution of 2.6 Å using MAD experiments on a selenomethionine derivative [Mosbacher et al. (2005 ▶), FEBS J.272, 6067–6076]. In this communication of parallel studies, BAL was crystallized in an alternative space group (P2{sub 1}2{sub 1}2{sub 1}) and its structure refined to a resolution of 1.65 Å, allowing detailed observation of the water structure, active-site interactions with ThDP and also the electron density for the co-solvent 2-methyl-2,4-pentanediol (MPD) at hydrophobic patches of the enzyme surface.

  2. 165例系统性红斑狼疮患者血液系统受累情况分析%Analysis of hematological system involvement in 165 patients with systemic lupus erythematosus

    Institute of Scientific and Technical Information of China (English)

    李春先

    2013-01-01

    目的 探讨系统性红斑狼疮(SLE)患者血液系统受累特点,为其诊治提供依据.方法 对165例确诊的SLE患者血液系统受累情况进行回顾性分析.结果 本组96例有贫血,其中慢性疾病性贫血(ACD) 63例,自身免疫性溶血性贫血(AIHA) 11例;72例外周血白细胞下降,65例血小板下降.49例行骨髓检查,以增生活跃为主(44例).结论 SLE血液系统受累发生率高、范围广.对血象异常的育龄女性患者应注意进行SLE的相关筛查.对于诊断为AIHA或特发性血小板减少性紫癜的患者,应警惕同时存在SLE的可能性.%Objective To investigate the characteristics of hematological system involvement in systemic lupus erythematosus (SLE) and to provide evidence for its diagnosis and treatment.Methods Retrospective analysis was performed in SLE patients with hematological system involvement.Result A total of 96 in 165 SLE patients with hematological system involvement had anemia,63 of which had characteristics of anemia caused by chronic disease,11 had autoimmune hemolytic anemia.A total of 72 patients had a white blood cell count < 4 * 109/L and 65 patients had a platelet count < 100 * 109/L.And 49 of the 165 SLE patients underwent bone marrow examination,mainly hyperplasia.Conclusion Systemic lupus erythematosus (SLE) had a high rate of hematological abnormality,widely involved in hematological system.For women of childbearing age with hematological abnormality,possibility of SLE should be screened.Meanwhile,the combination of SLE in patients with AIHA or idiopathic thrombocytopenic purpura should be on the alert.

  3. CLOSURE REPORT FOR CORRECTIVE ACTION UNIT165: AREA 25 AND 26 DRY WELL AND WASH DOWN AREAS, NEVADA TEST SITE, NEVADA

    Energy Technology Data Exchange (ETDEWEB)

    BECHTEL NEVADA

    2005-12-01

    This Closure Report (CR) documents the closure activities for Corrective Action Unit (CAU) 165, Area 25 and 26 Dry Well and Washdown Areas, according to the Federal Facility Agreement and Consent Order (FFACO) of 1996. CAU 165 consists of 8 Corrective Action Sites (CASs) located in Areas 25 and 26 of the Nevada Test Site (NTS). The NTS is located approximately 105 kilometers (65 miles) northwest of Las Vegas, nevada. Site closure activities were performed according to the Nevada Division of Environmental Protection (NDEP)-approved Corrective Action Plan (CAP) for CAU 165. CAU 165 consists of the following CASs: (1) CAS 25-07-06, Train Decontamination Area; (2) CAS 25-07-07, Vehicle Washdown; (3) CAS 25-20-01, Lab Drain Dry Well; (4) CAS 25-47-01, Reservoir and French Drain; (5) CAS 25-51-02, Drywell; (6) CAS 25-59-01, Septic System; (7) CAS 26-07-01, Vehicle Washdown Station; and (8) CAS 26-59-01, Septic System. CAU 165, Area 25 and 26 Dry Well and Washdown Areas, consists of eight CASs located in Areas 25 and 26 of the NTS. The approved closure alternatives included No Further Action, Clean Closure, and Closure in Place with Administrative Controls.

  4. A Prospective Randomized Double-Blind Study Evaluating UP165 and S-Adenosyl-l-Methionine on Depression, Anxiety and Psychological Well-Being

    Directory of Open Access Journals (Sweden)

    Douglas S. Kalman

    2015-05-01

    Full Text Available The primary objective of this pilot clinical trial was to evaluate the effects of UP165 (derived from Zea mays L., commonly known as corn over time. The secondary objective was the comparison for outcomes versus S-adenosyl-methionine (SAM-e. Subjects with mild depression or anxiety were given the Beck Depression Inventory second edition (BDI-II, the Beck Anxiety Inventory (BAI, and the Schwartz Outcome Scale (SOS-10. Forty-two subjects (21–65 years old were randomized to eight-weeks of supplementation with UP165 or SAM-e with questionnaires being administered at randomization, week four and eight. Those receiving UP165 achieved significant reduction from baseline at weeks four and eight, respectively for the BDI-II, as well as a trend for reduction in BAI at week four and significance at week eight. There was a trend for improvement on the SOS at week four and significance at week eight. SAM-e demonstrated a trend for improvement on the BDI-II by week eight over the UP165 with no differences between the two for the BAI or the SOS. Overall, this study indicates that there may be benefit to UP165 for mood enhancement in those with mild depression or anxiety. Randomized placebo comparator trials appear warranted.

  5. 165例5岁以下有反复喘息症状儿童过敏原检测及临床意义%Detection of allergens in 165 children below 5 with wheeze and its clinical significance

    Institute of Scientific and Technical Information of China (English)

    陈晓; 张融; 徐金梅; 李婷婷; 蒋丽军

    2012-01-01

    目的 探讨血清特异性过敏原检测在5岁以下反复喘息儿童早期哮喘诊断中的价值.方法 应用酶联免疫法对165例有反复喘息症状5岁以下儿童血清测定总免疫蛋白E(IgE)和12种吸入过敏原、食入过敏原特异性IgE,将受检儿童分婴儿组(<3岁)和3~5岁组.对过敏原状况进行分析比较.结果 165例儿童总IgE阳性率为89.1%,特异性过敏原阳性率为58.8%,吸入组最高为尘螨/粉螨,食入组最高为蛋 白/蛋黄,其次为鱼、虾/蟹、肉类.食入过敏原随年龄增长有下降趋势,吸入过敏原随年龄增长有增加趋势.结论 血清特异性过敏原阳性是有喘息症状儿童发展为哮喘的高危因素之一,检测5岁以下有反复喘息症状患儿血清吸入性和食入性过敏原有利于早期识别可能发展为哮喘的儿童,为儿童哮喘的早期干预提供依据.%Objective To explore the clinical significance of serum specific allergen test in early asthma diagnosis with wheezing children under 5 years old. Methods The serai total IgE, the specific IgE of 12 types of inhalation and food allergens were detected in 165 cases of children aged below 5 with asthma using the method of enzyme linked immunosorbent assay. The children were divided into infancy group (aged<3) and 3-5 age group. Results In 165 cases, the positive ratio of total IgE was 89. 1% . The positive ratio of specific allergens was 58. 8% . The most common inhalation allergen was dust mite/acarid and the most common food allergen was egg white/yolk, followed by fish, shrimp/crab and meat. The number of inhalation allergens droped with the food of age, while the number of inhalation allergens rose. Conclusion Positive serum specific allergens is one of the highly hazardous factors which leads to childhood wheeze into asthma. Thus, the test of inhalation allergens and food allergens in serum for children with wheeze aged below 5 plays an important role in detecting the potential

  6. VLBI observations of the RS Canum Venaticorum binary systems UX Arietis and HR 1099 at 1.65 GHz

    Science.gov (United States)

    Mutel, R. L.; Doiron, D. J.; Phillips, R. B.; Lestrade, J. F.

    1984-01-01

    VLBI observations of the RS CVn binaries UX Arietis and HR 1099 have been made at 1.65 GHz using a three-element array with a minimum fringe spacing of 11.5 milli-arcsec. Both sources were found to be unresolved within measurement uncertainties. In both cases, the derived upper limit to the source size was comparable to the overall size of each binary system. The lower limits to the brightness temperature were 1.4 x 10 to the 10th K for UX Arietis and 2.9 x 10 to the 10th K for HR 1099. Simultaneous polarization measurements at the VLA showed 4-8 percent circular polarization and less than 2 percent linear polarization. It is found that the data are consistent with gyrosynchrotron emission from a power-law energy distribution of electrons in a magnetic field B less than or approximately equal to 6 gauss.

  7. Milli-arcsecond scale Rotation Measure in the CSS Quasars 0548+165 and 1524-136

    CERN Document Server

    Mantovani, F; Ricci, R; Saikia, D J; Salter, C; Bondi, M

    2002-01-01

    Two Compact Steep-spectrum Sources (CSSs), 0548+165 and 1524-136, chosen from a list of CSSs with polarization percentages that decrease with decreasing frequency and high rotation measure values (RM > 450 rad/m**2) on arcsecond scales, were observed with the VLBA at 4.9 and 8.4 GHz. RM values up to ~10**4 rad/m**2 were found in several regions along the jets in both sources. We suggest that a thin screen of magneto-ionic material with about 1 kpc thickness is responsible for these high RMs. The observed depolarization may be due to beam depolarization and/or inhomogeneities in the magnetic field.

  8. Effect of ultrasonic stirring on temperature distribution and grain refinement in Al- 1.65% Si alloy melt

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A series of experiments were conducted for Al-1.65%Si (mass fraction) alloy melt to study the formation of grain refining structure with ultrasonic stirring. The cooling curves of ingots with ultrasonic were measured and compared with those without ultrasonic. At the same time, the effect of the time of ultrasonic stirring on solidification structure of ingots was investigated. The influence of ultrasonic on the grain-refining efficiency of ingots was analyzed. In order to well understand the melts behavior under ultrasonic, by using ammonium chloride solution, the simulation experiment was carried out and the temperature distribution in ingot with or without ultrasonic was compared. The results indicate that the ultrasonic reduces the temperature inhomogeneity of melt, i.e.the ultrasonic helps to homogenize the melt temperature. The effect of stirring and heat generation in ingot start to occur with increasing the time of ultrasonic stirring.

  9. Solar Irradiance from 165 to 400 nm in 2008 and UV Variations in Three Spectral Bands During Solar Cycle 24

    Science.gov (United States)

    Meftah, M.; Bolsée, D.; Damé, L.; Hauchecorne, A.; Pereira, N.; Irbah, A.; Bekki, S.; Cessateur, G.; Foujols, T.; Thiéblemont, R.

    2016-12-01

    Accurate measurements of the solar spectral irradiance (SSI) and its temporal variations are of primary interest to better understand solar mechanisms, and the links between solar variability and Earth's atmosphere and climate. The SOLar SPECtrum (SOLSPEC) instrument of the Solar Monitoring Observatory (SOLAR) payload onboard the International Space Station (ISS) has been built to carry out SSI measurements from 165 to 3088 nm. We focus here on the ultraviolet (UV) part of the measured solar spectrum (wavelengths less than 400 nm) because the UV part is potentially important for understanding the solar forcing of Earth's atmosphere and climate. We present here SOLAR/SOLSPEC UV data obtained since 2008, and their variations in three spectral bands during Solar Cycle 24. They are compared with previously reported UV measurements and model reconstructions, and differences are discussed.

  10. rhVEGF 165 delivered in a porous beta-tricalcium phosphate scaffold accelerates bridging of critical-sized defects in rabbit radii.

    Science.gov (United States)

    Yang, Pei; Wang, Chunsheng; Shi, Zhibin; Huang, Xin; Dang, Xiaoqian; Li, Xudong; Lin, Shien-Fong; Wang, Kunzheng

    2010-02-01

    Segmental bone defects are a common obstacle in major orthopedic procedures, and the treatment of these defects remains a challenging clinical problem. Bone tissue engineering has been attracting much attention in recent years. We evaluated the ability of the specific combination of 3 microg rhVEGF(165) with a novel porous beta-tricalcium phosphate (beta-TCP) scaffold coated with fibrin sealant (FS) to facilitate bone regeneration. Unilateral 15-mm long critical-sized defects were prepared in the radial diaphysis of rabbits and treated with rhVEGF(165)/FS/scaffold or FS/scaffold. Healing of the defects was assessed at 4, 8, and 12 weeks, radiologically, histologically, and biomechanically. The results of the study demonstrated that the critical-sized defects in the midshaft of the rabbit radius, treated with rhVEGF(165) incorporated in porous beta-TCP scaffold by FS, can be completely bridged by cortical bone in 12 weeks. The bone marrow space was also reformed histologically and radiologically at 12 weeks postsurgery in the rhVEGF(165)-treated group. Furthermore, biomechanical examination demonstrated that the segmental bone defects were not only radiologically and histologically repaired but were also mechanically repaired. Interestingly, none of the defects was completely repaired at 12 weeks following treatment with FS/scaffold without rhVEGF(165). A solution-driven process is likely the predominant mechanism of accelerating biodegradation of the beta-TCP scaffold in the presence of rhVEGF(165); furthermore, cell-mediated phagocytosis also contributes to biodegradation of the biomaterials.

  11. Expression of BMP2 and vegf165 genes simultaneity transfected mouse bone marrow mesenchymal stem cells%BMP2、VEGF165双基因共表达质粒在小鼠骨髓基质干细胞的表达

    Institute of Scientific and Technical Information of China (English)

    张恒; 田晓滨; 孙立; 杨述华; 胡如印; 汪雷; 陆延盛; 张宇坤; 傅德皓

    2009-01-01

    目的 观察转染BMP2和VEGF165双基因共表达质粒在小鼠骨髓基质干细胞的表达情况.方法 脂质体介导下将双基因真核表达质粒pIRES-BMP2-VEGF165导入小鼠骨髓基质干细胞,用RT-PCR和免疫组织化学方法观察BMP2和VEGF165双基因在小鼠骨髓基质干细胞内的表达.结果 转染BMP2、VEGF165的小鼠骨髓基质干细胞有明显的BMP2和VEGF165mRNA及其蛋白表达.结论 转染BMP2和VEGF165双基因的小鼠骨,髓基质干细胞能同时表达以上两种基因.

  12. Tratamiento del prolapso rectal en la infancia con infiltración de solución salina al 16,5 % Treatment of the prolapse of the rectum in childhood with 16,5 % saline solution infiltration

    Directory of Open Access Journals (Sweden)

    Carlos Ramírez Pérez

    2011-09-01

    Full Text Available Introducción: cuando falla el tratamiento médico conservador en los pacientes pediátricos con prolapso rectal se impone la infiltración perirrectal con sustancias irritantes. En la década de los 90 esas infiltraciones en nuestro centro se hacían con glicerina, pero escaseó en el mercado, y ante tal problema, se buscó otro agente infiltrante alternativo. En el presente trabajo se describe la experiencia con la utilización de solución salina al 16,5 %. Métodos: se realizó un estudio de intervención, longitudinal, prospectivo, experimental, del tipo ensayo clínico no controlado. Consta de una segunda parte en la que se utilizó la aleatorización con un grupo control para la validación. El universo estuvo constituido por 27 pacientes y la muestra, por 16 pacientes con prolapso rectal, que fueron atendidos en el servicio de gastroenterología del Hospital Pediátrico Provincial de Holguín en el quinquenio 2003-2007. Las variables desarrolladas fueron: concentración idónea para el tratamiento, cantidad de sustancia a infiltrar, complicaciones, recurrencia, número de infiltraciones y curación al año o más. Los resultados se exponen en forma de tablas porcentuales. Resultados: la eficacia con la utilización de solución salina al 16,5 % fue del 100 %, todos los pacientes curaron, y ninguno presentó recurrencia, por lo que no fueron necesarias 2 o más sesiones de tratamiento. Se comentó de un niño que, luego de fallar la infiltración con leche materna en primera opción y fallido también el cerclaje, finalmente resolvió con este método. Las complicaciones fueron relativamente pocas (18,9 %: un absceso, una celulitis y una retención urinaria con necesidad de sondaje durante 2 semanas, sin secuelas posteriores. Se realiz�� aleatorización con igual número de pacientes en quienes se usó la glicerina, los resultados del uso de ambas sustancias fueron muy parecidos, y el número de complicaciones fue ligeramente mayor en

  13. Gene therapy with VEGF 165 for angiogenesis in experimental acute myocardial infarction Terapia gênica com VEGF 165 para angiogênese no infarto agudo do miocárdio experimental

    Directory of Open Access Journals (Sweden)

    Roberto T. Sant'Anna

    2003-06-01

    Full Text Available OBJECTIVE: Evaluate coronary angiogenic response to transmural injection of plasmid encoding VEGF 165 in acute myocardial infarction (AMI zones in a canine model. METHODS: The heart of eleven dogs was exposed and AMI was induced by occlusion of the diagonal branch of anterior descending coronary artery. For each of 10 selected points in the infarction area and its peripheral zone injections of 1 ml of saline solution (control group: five dogs or 1 ml of plasmid encoding VEGF 165 solution (200 µg/ml (VEGF group: six dogs were introduced. Tecnecium myocardial scintigraphy was performed immediately after animal recovery and 14 days later to evaluate the myocardial perfusion. The animals were sacrificed and the hearts were submitted to a histological study of the infarcted area, peripheral zone and normal posterior ventricular wall, to evaluate the number of arterioles and capillaries. RESULTS: Immediate modifications in myocardial perfusion found in scintigraphic studies were similar in both groups. In the second evaluation at 14 days, hypoperfusion of ischemic area had recovered by 70% to 90% when compared to the day of AMI. Histologic evaluation of the peripheral area of AMI indicated a larger number of vessels in the VEGF group when compared to controls (mean: 123.81 + 21.48 and 40 + 6.13, p OBJETIVO: Verificar a indução de angiogênese miocárdica pela injeção transmural de plasmídeo VEGF 165 (Genentech/ USA em zonas do infarto agudo do miocárdio (IAM de cães, mediante avaliação por cintilografia miocárdica e estudo histológico. MÉTODOS: Em onze cães anestesiados o coração foi abordado em toracotomia antero-lateral esquerda e produzido IAM pela ligadura simples de ramo diagonal da artéria coronária descendente anterior. Em cada de 10 pontos selecionados da área infartada e sua periferia foi realizada a injeção de um total de 1 ml de solução salina (grupo controle: cinco cães ou de solução contendo plasmídeo VEGF 165

  14. BMP2、VEGF165双基因修饰的小鼠BMSCs复合人工骨的体内诱导成骨%In vivo osteogenic potential of calcium phosphate cement seeded with BMP2-and VEGF165-transduced mice BMSCs

    Institute of Scientific and Technical Information of China (English)

    孙立; 姜小峰; 田晓滨; 田家亮; 杨先腾; 胡如印; 张一; 韩伟; 陈涛

    2014-01-01

    目的 观察BMP2、VEGF165双基因转染的小鼠BMSCs复合自固化磷酸钙人工骨后的异位诱导成骨能力. 方法 脂质体介导下将含BMP2、VEGF165双基因的真核表达质粒pIRES转染小鼠BMSCs,转染空白质粒作阴性对照.用免疫组织化学和Western blot方法观察BMP2和VEGF165双基因在小鼠BMSCs内的表达;以自固化磷酸钙人工骨为支架,建立真核表达质粒pIRES-BMP2-VEGF165双基因修饰的组织工程骨植入小鼠右侧股骨肌袋内;将复合转染空白质粒小鼠BMSCs的自固化磷酸钙人工骨植入小鼠左侧股骨肌袋内.于术后第3天、第2,4,6周进行X线摄影对比后处死小鼠,取肌袋内组织行病理切片染色,观察成骨情况. 结果 小鼠BMSCs在转染BMP2、VEGF165基因后相关蛋白显著表达,由真核表达质粒pIRES-BMP2-VEGF165双基因修饰的组织工程骨在X线和病理学检查中相对于复合转染空白质粒小鼠BMSCs的组织工程骨具有更明显的异位成骨能力. 结论 由BMP2、VEGF165双基因质粒构建的组织工程骨有明显的异位成骨能力.%Objective To evaluate the ectopic osteogenic potential of calcium phosphate cement seeded with BMP2-and VEGF165-transduced mice BMSCs.Methods BMSCs transfected with recombinant plasmid pIRES-BMP2-VEGF165 using a liposome method were implanted into the muscle pouches of right thigh of the mice.BMSCs transfected only with pIRES served as a negative control and implanted into the muscle pouches of right thigh of the mice.Expressions of BMP2 and VEGF165 genes were assayed by immunohistochemical analysis and Western blot.Ectopic bone formation was evaluated by radiography and histology at 3 days and 2,4,and 6 weeks after implantation.Results Expressions of BMP2 and VEGF165 proteins were highly improved in BMP2-and VEGF165-transduced BMSCs.Calcium phosphate cement with BMSCs transfected with pIRES-BMP2-VEGF165 provided better ectopic osteogenesis compared to control group.Conclusion Tissue

  15. 45 CFR 287.165 - What are the data collection and reporting requirements for Public Law 102-477 Tribes that...

    Science.gov (United States)

    2010-10-01

    ... requirements for Public Law 102-477 Tribes that consolidate a NEW Program with other programs? 287.165 Section... collection and reporting requirements for Public Law 102-477 Tribes that consolidate a NEW Program with other... Public Law 102-477. This system includes a program report, consisting of a narrative report,...

  16. 33 CFR 165.809 - Security Zones; Port of Port Lavaca-Point Comfort, Point Comfort, TX and Port of Corpus Christi...

    Science.gov (United States)

    2010-07-01

    ... Lavaca-Point Comfort, Point Comfort, TX and Port of Corpus Christi Inner Harbor, Corpus Christi, TX. 165... Lavaca-Point Comfort, Point Comfort, TX and Port of Corpus Christi Inner Harbor, Corpus Christi, TX. (a) Location. The following area is designated as a security zone: all waters of the Corpus Christi...

  17. Stabilization and plant uptake of N from 15N-labelled pea residue 16.5 years after incorporation in soil

    DEFF Research Database (Denmark)

    Laberge, G.; Ambus, P.; Hauggaard-Nielsen, H.;

    2006-01-01

    The decline of N from N-15-labelled mature pea residues was followed in unplanted soil over 16.5 yr. Eight years after residue incorporation, 24% of the residue N-15 input was still present in the soil and, after 16.5 yr, 16% of the residue N-15 input remained. A double exponential model successf......The decline of N from N-15-labelled mature pea residues was followed in unplanted soil over 16.5 yr. Eight years after residue incorporation, 24% of the residue N-15 input was still present in the soil and, after 16.5 yr, 16% of the residue N-15 input remained. A double exponential model......-amended soils were obtaining 1.7% of their N from residue N. This is, to our knowledge, the longest study on decay of N in soils from N-15-labelled crop residues. The current study thus provides a unique data set for our empirical understanding of N-dynamics in agricultural systems, which is a prerequisite...

  18. 33 CFR 165.T09-0166 - Safety Zone, Brandon Road Lock and Dam to Lake Michigan including Des Plaines River, Chicago...

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone, Brandon Road Lock and Dam to Lake Michigan including Des Plaines River, Chicago Sanitary and Ship Canal, Chicago River... Areas Ninth Coast Guard District § 165.T09-0166 Safety Zone, Brandon Road Lock and Dam to Lake...

  19. ARGONAUTE10 promotes the degradation of miR165/6 through the SDN1 and SDN2 exonucleases in Arabidopsis

    Science.gov (United States)

    Zhai, Jixian; Chen, Jiayi; Luscher, Elizabeth; Gao, Lei; Liu, Chunyan; Cao, Xiaofeng; Mo, Beixin; Ma, Jinbiao; Meyers, Blake C.

    2017-01-01

    The degradation of small RNAs in plants and animals is associated with small RNA 3′ truncation and 3′ uridylation and thus relies on exonucleases and nucleotidyl transferases. ARGONAUTE (AGO) proteins associate with small RNAs in vivo and are essential for not only the activities but also the stability of small RNAs. AGO1 is the microRNA (miRNA) effector in Arabidopsis, and its closest homolog, AGO10, maintains stem cell homeostasis in meristems by sequestration of miR165/6, a conserved miRNA acting through AGO1. Here, we show that SMALL RNA DEGRADING NUCLEASES (SDNs) initiate miRNA degradation by acting on AGO1-bound miRNAs to cause their 3′ truncation, and the truncated species are uridylated and degraded. We report that AGO10 reduces miR165/6 accumulation by enhancing its degradation by SDN1 and SDN2 in vivo. In vitro, AGO10-bound miR165/6 is more susceptible to SDN1-mediated 3′ truncation than AGO1-bound miR165/6. Thus, AGO10 promotes the degradation of miR165/6, which is contrary to the stabilizing effect of AGO1. Our work identifies a class of exonucleases responsible for miRNA 3′ truncation in vivo and uncovers a mechanism of specificity determination in miRNA turnover. This work, together with previous studies on AGO10, suggests that spatially regulated miRNA degradation underlies stem cell maintenance in plants. PMID:28231321

  20. Effects of lentivirus-mediated co-transfection of BMP2 gene and VEGF165 gene on osteogenic differentiation of bone marrow-derived mesenchymal stromal cells%慢病毒介导BMP2和VEGF165基因共转染对骨髓基质干细胞成骨分化的影响

    Institute of Scientific and Technical Information of China (English)

    蒋佳; 范存义; 曾炳芳

    2011-01-01

    Objective To investigate the effects of lentivirus-mediated co-transfection of bone morphogenetic protein 2 (BMP2) gene and vascular endothelial growth factor 165 ( VEGF165) gene on osteogenic differentiation of bone marrow-derived mesenchymal stromal cells ( MSCs). Methods The expression lentivirus vectors carrying VEGF165, BMP2 or green fluorescent protein (GFP) gene were constructed respectively, and recombinant lentivirus carrying VEGF165 ( Lv-VEGF), BMP2 ( Lv-BMP) or GFP ( Lv-GFP) were packaged and produced respectively. Rat bone marrow-derived MSCs were isolated and cultured in vitro, and were transfected with Lv-VEGF (VEGF group), Lv-BMP ( BMP group) or Lv-GFP (GFP group), co-transfected with Lv-VEGF and Lv-BMP (BMP + VEGF group), or transfected with no virus ( control group). The expression of VEGF165 and BMP2 mRNA 7 d after transfection and that of osteocalcin (OCN) mRNA 1, 2 and 4 weeks after transfection in MSCs was detected by RT-PCR in each group. The expression of VEGF165 and BMP2 protein 1, 4 and 8 weeks after transfection and that of OCN protein 1, 2 and 4 weeks after transfection in supernatant fluid of culture was detected by ELISA in each group. Alkaline phosphatase (ALP) staining was conducted, and ALP activity of MSCs was measured 14 d after transfection in each group. Results VEGF165 and BMP2 mRNA and protein effectively co-expressed in BMP + VEGF group. There was no significant difference in the expression of BMP2 mRNA and protein between BMP + VEGF group and BMP group (P > 0. 05), and there was also no significant difference in the expression of VEGF165 mRNA and protein between BMP + VEGF group and VEGF group (P >0.05). There was no expression of BMP2 mRNA and protein in control group, GFP group and VEGF group, and there was also no expression of VEGF165 mRNA and protein in control group, GFP group and BMP group. The expression of OCN mRNA and protein in BMP + VEGF group was significantly higher than that in the other groups (P <0.01). The

  1. Structure of botulinum neurotoxin type D light chain at 1.65 A resolution: repercussions for VAMP-2 substrate specificity.

    Science.gov (United States)

    Arndt, Joseph W; Chai, Qing; Christian, Todd; Stevens, Raymond C

    2006-03-14

    The seven serotypes (A-G) of botulinum neurotoxins (BoNTs) function through their proteolytic cleavage of one of three proteins (SNAP-25, Syntaxin, and VAMP) that form the SNARE complex required for synaptic vesicle fusion. The different BoNTs have very specific protease recognition requirements, between 15 and 50 amino acids in length depending on the serotype. However, the structural details involved in substrate recognition remain largely unknown. Here is reported the 1.65 A resolution crystal structure of the catalytic domain of BoNT serotype D (BoNT/D-LC), providing insight into the protein-protein binding interaction and final proteolysis of VAMP-2. Structural analysis has identified a hydrophobic pocket potentially involved in substrate recognition of the P1' VAMP residue (Leu 60) and a second remote site for recognition of the V1 SNARE motif that is critical for activity. A structural comparison of BoNT/D-LC with BoNT/F-LC that also recognizes VAMP-2 one residue away from the BoNT/D-LC site provides additional molecular details about the unique serotype specific activities. In particular, BoNT/D prefers a hydrophobic interaction for the V1 motif of VAMP-2, while BoNT/F adopts a more hydrophilic strategy for recognition of the same V1 motif.

  2. Asperlones A and B, Dinaphthalenone Derivatives from a Mangrove Endophytic Fungus Aspergillus sp. 16-5C

    Directory of Open Access Journals (Sweden)

    Ze'en Xiao

    2015-01-01

    Full Text Available Racemic dinaphthalenone derivatives, (±-asperlone A (1 and (±-asperlone B (2, and two new azaphilones, 6′-hydroxy-(R-mitorubrinic acid (3 and purpurquinone D (4, along with four known compounds, (−-mitorubrinic acid (5, (−-mitorubrin (6, purpurquinone A (7 and orsellinic acid (8, were isolated from the cultures of Aspergillus sp. 16-5C. The structures were elucidated using comprehensive spectroscopic methods, including 1D and 2D NMR spectra and the structures of 1 further confirmed by single-crystal X-ray diffraction analysis, while the absolute configuration of 3 and 4 were determined by comparing their optical rotation and CD with those of the literature, respectively. Compounds 1, 2 and 6 exhibited potent inhibitory effects against Mycobacterium tuberculosis protein tyrosine phosphatase B (MptpB with IC50 values of 4.24 ± 0.41, 4.32 ± 0.60 and 3.99 ± 0.34 μM, respectively.

  3. High-yield expression of human vascular endothelial growth factor VEGF(165) in Escherichia coli and purification for therapeutic applications.

    Science.gov (United States)

    Pizarro, Shelly A; Gunson, Jane; Field, Matthew J; Dinges, Rachel; Khoo, Stefanie; Dalal, Milind; Lee, Michael; Kaleas, Kimberly A; Moiseff, Kathryn; Garnick, Susan; Reilly, Dorothea E; Laird, Michael W; Schmelzer, Charles H

    2010-08-01

    Vascular endothelial growth factor (VEGF(165)) is a potent mitogen that induces angiogenesis and vascular permeability in vivo and has demonstrated potential in therapeutic applications for accelerating wound healing. An industrial production method that provides high yield as well as high purity, quality, and potency is needed. The process described in this report involves a bacterial expression system capable of producing approximately 9g of rhVEGF per liter of broth and a downstream purification process consisting of protein refolding and three chromatography steps prior to formulation of the drug substance. A high cell density (HCD) fed-batch fermentation process was used to produce rhVEGF in periplasmic inclusion bodies. The inclusion bodies are harvested from the cell lysate and subjected to a single-step protein solubilization and refolding operation to extract the rhVEGF for purification. Overall recovery yields observed during development, including refolding and chromatography, were 30+/-6%. Host cell impurities are consistently cleared below target levels at both laboratory and large-scale demonstrating process robustness. The structure of the refolded and purified rhVEGF was confirmed by mass spectrometry, N-terminal sequencing, and tryptic peptide mapping while product variants were analyzed by multiple HPLC assays. Biological activity was verified by the proliferation of human umbilical vein derived endothelial cells. Copyright 2010 Elsevier Inc. All rights reserved.

  4. Bone marrow stromal cells with a combined expression of BMP-2 and VEGF-165 enhanced bone regeneration

    Energy Technology Data Exchange (ETDEWEB)

    Xiao Caiwen; Zhou Huifang; Fu Yao; Gu Ping; Fan Xianqun [Department of Ophthalmology, Shanghai Ninth People' s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200011 (China); Liu Guangpeng [Key Laboratory of Tissue Engineering, Shanghai Ninth People' s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200011 (China); Zhang Peng [Center for Translational Medicine Research and Development, Shenzhen Institute of Advanced Technology, Chinese Academy of Science (China); Hou Hongliang; Tang Tingting, E-mail: drfanxianqun@126.com [Department of Orthopedics, Shanghai Ninth People' s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200011 (China)

    2011-02-15

    Bone graft substitutes with osteogenic factors alone often exhibit poor bone regeneration due to inadequate vascularization. Combined delivery of osteogenic and angiogenic factors from biodegradable scaffolds may enhance bone regeneration. We evaluated the effects of bone morphogenetic protein 2 (BMP2) and vascular endothelial growth factor (VEGF), combined with natural coral scaffolds, on the repair of critical-sized bone defects in rabbit orbits. In vitro expanded rabbit bone marrow stromal cells (BMSCs) were transfected with human BMP2 and VEGF165 genes. Target protein expression and osteogenic differentiation were confirmed after gene transduction. Rabbit orbital defects were treated with a coral scaffold loaded with BMP2-transduced and VEGF-transduced BMSCs, BMP2-expressing BMSCs, VEGF-expressing BMSCs, or BMSCs without gene transduction. Volume and density of regenerated bone were determined by micro-computed tomography at 4, 8, and 16 weeks after implantation. Neovascularity, new bone deposition rate, and new bone formation were measured by immunostaining, tetracycline and calcein labelling, and histomorphometric analysis at different time points. The results showed that VEGF increased blood vessel formation relative to groups without VEGF. Combined delivery of BMP2 and VEGF increased new bone deposition and formation, compared with any single factor. These findings indicate that mimicking the natural bone development process by combined BMP2 and VEGF delivery improves healing of critical-sized orbital defects in rabbits.

  5. The 0.11.65 evolution of the bright end of the [OII] luminosity function

    CERN Document Server

    Comparat, Johan; Kneib, Jean-Paul; Ilbert, Olivier; Gonzalez-Perez, V; Tresse, Laurence; Zoubian, Julien; Arnouts, Stephane; Bacon, Roland; Brownstein, Joel R; Baugh, Carlton; Delubac, Timothee; Ealet, Anne; Escoffier, Stephanie; Ge, Jian; Jullo, Eric; Lacey, Cedric; Ross, Nicholas P; Schlegel, David; Schneider, Donald P; Steele, Oliver; Tasca, Lidia; Yeche, Christophe; Lesser, Michael; Jiang, Zhaoji; Jing, Yipeng; Fan, Zhou; Fan, Xiaohui; Ma, Jun; Nie, Jundan; Wang, Jiali; Wu, Zhenyu; Zhang, Tianmeng; Zhou, Xu; Zhou, Zhimin; Zou, Hu

    2014-01-01

    We present the [OII] luminosity function measured in the redshift range 0.11.65 with unprecedented depth and accuracy. Our measurements are based on medium resolution flux-calibrated spectra of emission line galaxies with the FORS2 instrument at VLT and with the SDSS-III/BOSS spectrograph. The FORS2 spectra and the corresponding catalog containing redshifts and line fluxes are released along with this paper. In this work we use a novel method to combine the aforementioned surveys with GAMA, zCOSMOS and VVDS, which have different target selection, producing a consistent weighting scheme to derive the [OII] luminosity function. The measured luminosity function is in good agreement with previous independent estimates. The comparison with two state-of-the-art semi-analytical models is very good up to z= 1.1, which is encouraging for the production of mock catalogs of [OII] flux limited surveys. We observe the bright end evolution over 8.5 Gyr: we measure the decrease of log L* from 42.4 erg/s at redshift...

  6. KIC 8462852 Faded at an Average Rate of 0.165+-0.013 Magnitudes Per Century From 1890 To 1989

    CERN Document Server

    Schaefer, Bradley E

    2016-01-01

    The star KIC 8462852 is a completely-ordinary F3 main sequence star, except that the light curve from the Kepler spacecraft shows episodes of unique and inexplicable day-long dips with up to 20% dimming. Here, I provide a light curve of 1232 Johnson B-band magnitudes from 1890 to 1989 taken from archival photographic plates at Harvard. KIC 8462852 displays a highly significant and highly confident secular dimming at an average rate of 0.165+-0.013 magnitudes per century. From the early 1890s to the late 1980s, KIC 8462852 has faded by 0.193+-0.030 mag. This century-long dimming is completely unprecedented for any F-type main sequence star. So the Harvard light curve provides the first confirmation (past the several dips seen in the Kepler light curve alone) that KIC 8462852 has anything unusual going on. The century-long dimming and the day-long dips are both just extreme ends of a spectrum of timescales for unique dimming events, so by Ockham's Razor, all this is produced by one physical mechanism. This one ...

  7. Ad-hVEGF165 reverses homocysteine-induced endothelial dysfunction by regulating nitric oxide system%Ad-hVEGF165通过调控一氧化氮系统逆转同型半胱氨酸对内皮细胞的损伤

    Institute of Scientific and Technical Information of China (English)

    赵莉莉; 毛用敏; 张莹; 师莹; 宋衍秋

    2015-01-01

    目的 探讨携带人血管内皮生长因子165基因的重组腺病毒(Ad-hVEGF165)对经同型半胱氨酸(Hcy)损伤的内皮细胞的作用及机制.方法 不同浓度Hcy(0、0.05和1.00 mmol/L)刺激人脐静脉内皮细胞CRL-1730 24 h后,分别加入Hcy、空载体重组腺病毒Ad-Track和Ad-hVEGF165作用48 h(分为9组,包括空白组、Hcy0.05组、Hcy1.00组、Ad-Track组、Hcy0.05+ Ad-Track组、Hcy1.00+Ad-Track组、Ad-hVEGF165组、Hcy0.05+ Ad-hVEGF165组、Hcy1.00+ Ad-hVEGF165组),采用实时荧光定量PCR和Western blot半定量分析细胞中内皮型一氧化氮合酶(eNOS)和二甲基精氨酸二甲胺水解酶(DDAH)2的mRNA和蛋白相对表达量,二者mRNA和蛋白表达的相关性采用Pearson相关分析.结果 Hcy0.05组和Hcy0.05+Ad-hVEGF165组eNOS的mRNA和蛋白表达均分别低于空白组和Ad-hVEGF165组(P均<0.05).Hcy0.05组、Hcy1.00组与空白组相比,Hcy0.05+Ad-Track组、Hcy1.00+ Ad-Track组与Ad-Track组相比,Hcy0.05+Ad-hVEGF165组、Hcy1.00+Ad-hVEGF165组与Ad-hVEGF165组相比,细胞内的DDAH2 mRNA和蛋白表达均较低(P均<0.05).Ad-hVEGF165组与空白组、Ad-Track组相比,Hcy0.05+Ad-hVEGF165组与Hcy0.05组、Hcy0.05+Ad-Track组相比,Hcy1.00+ Ad-hVEGF165组与Hcy1.00组、Hcy1.00+ Ad-Track组相比,DDAH2 mRNA和蛋白表达均较高(P均<0.05).Pearson相关分析显示,Hcy损伤内皮细胞后DDAH2与eNOS的mRNA及蛋白表达均不相关(r值分别为0.057和0.449,P均>0.05);在外源性血管内皮生长因子作用下,DDAH2与eNOS的mRNA和蛋白表达也均不相关(r值分别为0.284和0.432,P均>0.05).结论 Ad-hVEGF165调控一氧化氮系统功能,是其逆转Hcy导致的内皮细胞损伤的可能作用机制之一.%Objective To investigate the therapeutic effect of Ad-hVEGF165 on the endothelial cells dysfunction induced by homocysteine (Hcy) and related molecular mechanisms.Methods Human umbilical vein endothelial cells CRL-1730 were treated with Hcy at different concentrations (0

  8. Development of a 1.65 μm pulsed laser DIAL System to map atmospheric CH4 distributions

    Science.gov (United States)

    Ismail, S.; Crawford, J. H.; Leifer, I.; Hovis, F.; Hair, J. W.; Brown, L. R.; Hardesty, R.; Fix, A.; Abedin, N.; Devi, V.; Benner, D.; Sung, K.; Diskin, G. S.; Hostetler, C. A.

    2010-12-01

    We present the results of a system study conducted to develop and demonstrate a high sensitivity ground-based and airborne DIAL System for measuring atmospheric CH_{4}. This program addresses the 2007 NRC Decadal Survey recommendation that ‘if appropriate and cost-effective methane technology becomes available, methane capability should be added’ to close the carbon budget. A highly efficient absorber of IR radiation, methane is a potent greenhouse gas with a warming potential 72 times greater than CO_{2} per molecule, over a 20-year horizon. The proposed measurement will enable scientific assessments globally, and in particular of northern latitude CH_{4} emission impacts on climate and enhance understanding of ecosystem response to climate variability and land cover change. This system will provide simultaneous ranging and high resolution measurements of aerosol and cloud distributions. This will incorporate a pulsed 1.65 μm OPO laser; an existing receiver system redesigned to optimize its performance for this wavelength by incorporating an optical filter; a commercially available InGaAs APD and an existing 3-D scanner. High resolution FTIR laboratory spectroscopic measurements in the R4 transitions of 2ν_{3} of CH_{4} will be conducted to maximize accuracy of retrievals. This development demonstrates an azimuthal scanning system for ground-based mapping and monitoring of range-resolved, near-surface CH_{4} emissions and airborne detection of dry CH_{4} boundary layer and total vertical column fractions. Due to its relative insensitivity to aerosol and cloud interferences, this system will be ideal for investigating high latitude CH_{4} releases over polar ice sheets, permafrost regions, wetlands, and over open ocean during night and day as well as commercial applications in of natural gas leaks. The proposed task is applicable to NASA sub-orbital, satellite validation, and venture class programs.

  9. The inhibition and resistance mechanisms of actinonin, isolated from marine Streptomyces sp. NHF165, against Vibrio anguillarum

    Directory of Open Access Journals (Sweden)

    Na Yang

    2016-09-01

    Full Text Available Vibrio sp. is the most serious pathogen in marine aquaculture, and the development of anti-Vibrio agents is urgently needed. However, it is extreme lack of high-throughput screening (HTS model for searching anti-Vibrio compounds. Here, we established a protein-based HTS screening model to identify agents targeting peptide deformylase (PDF of Vibrio anguillarum. To find potential anti-Vibrio compounds, crude extracts derived from marine actinomycetes were applied for screening with this model. Notably, crude extract of strain Streptomyces sp. NHF165 inhibited dramatically both on V. anguillarum PDF (VaPDF activity and V. anguillarum cell growth. And actinonin was further identified as the functional component. Anti-VaPDF and anti-V. anguillarum activities of actinonin were dose-dependent, and the IC50 values were 6.94 M and 2.85 M, respectively. To understand the resistance of V. anguillarum against actinonin, spontaneous V. anguillarum mutants with resistance against actinonin were isolated. Surprisingly, for the resistant strains, the region between 774 and 852 base pairs was found to be absent in the gene folD which produces 10-formyl-tetrahydrofolate, a donor of N-formyl to Met-tRNAfmet. When compared to the wild type strain, folD mutant showed 8 times of minimum inhibition concentration on actinonin, however, the folD complementary strain could not grow on the medium supplemented with actinonin, which suggested that folD gene mutation was mainly responsible for the actinonin resistance. To our knowledge, this is the first report showing that marine derived Streptomyces sp. could produce actinonin with anti-VaPDF activity and the resistance against actinonin by V. anguillarum is mediated by mutation in folD gene.

  10. Prokaryotic Soluble Overexpression and Purification of Human VEGF165 by Fusion to a Maltose Binding Protein Tag.

    Directory of Open Access Journals (Sweden)

    Minh Tan Nguyen

    Full Text Available Human vascular endothelial growth factor (VEGF is a key regulator of angiogenesis and plays a central role in the process of tumor growth and metastatic dissemination. Escherichia coli is one of the most common expression systems used for the production of recombinant proteins; however, expression of human VEGF in E. coli has proven difficult because the E. coli-expressed VEGF tends to be misfolded and forms inclusion bodies, resulting in poor solubility. In this study, we successfully produced semi-preparative amounts of soluble bioactive human VEGF165 (hVEGF. We created seven N-terminal fusion tag constructs with hexahistidine (His6, thioredoxin (Trx, glutathione S-transferase (GST, maltose-binding protein (MBP, N-utilization substance protein A (NusA, human protein disulfide isomerase (PDI, and the b'a' domain of PDI (PDIb'a', and tested each construct for soluble overexpression in E. coli. We found that at 18°C, 92.8% of the MBP-tagged hVEGF to be soluble and that this tag significantly increased the protein's solubility. We successfully purified 0.8 mg of pure hVEGF per 500 mL cell culture. The purified hVEGF is stable after tag cleavage, contains very low levels of endotoxin, and is 97.6% pure. Using an Flk1+ mesodermal precursor cell (MPC differentiation assay, we show that the purified hVEGF is not only bioactive but has similar bioactivity to hVEGF produced in mammalian cells. Previous reports on producing hVEGF in E. coli have all been based on refolding of the protein from inclusion bodies. To our knowledge, this is the first report on successfully expressing and purifying soluble hVEGF in E. coli.

  11. PREDICTORS OF QUALITY OF LIFE IN 165 PATIENTS WITH ACROMEGALY: RESULTS FROM A SINGLE-CENTER STUDY.

    Science.gov (United States)

    Kreitschmann-Andermahr, Ilonka; Buchfelder, Michael; Kleist, Bernadette; Kohlmann, Johannes; Menzel, Christa; Buslei, Rolf; Kołtowska-Häggsträm, Maria; Strasburger, Christian; Siegel, Sonja

    2017-01-01

    Even if treated, acromegaly has a considerable impact on patient quality of life (QoL); despite this, the exact clinical determinants of QoL in acromegaly are unknown. This study retrospectively examines a cohort of treated patients with acromegaly, with the aim of identifying these determinants. Retrospective survey analysis, with 165 patients included in the study. All patients completed a survey, which included demographic data and the clinical details of their disease, the Short Form-36 Health Survey (SF-36), the revised Beck Depression Inventory (BDI-II), and the Bern Embitterment Inventory (BEI). Stepwise regression was used to identify predictors of QoL. The strongest predictors of the physical component score of the SF-36 were (in order of declining strength of association): Delay between first presentation of the disease and diagnosis, body mass index (BMI), number of doctors visited before the diagnosis of acromegaly, and age at diagnosis. For the mental component score, the strongest predictors were: number of doctors visited, previous radiotherapy, and age at study entry; and, for the BDI-II score: number of doctors visited, previous radiotherapy, age at study entry, and employment status at the time of diagnosis. The following were predictors of the BEI score: number of doctors visited, and age at study entry. Diagnostic delay and lack of diagnostic acumen in medical care provision are strong predictors of poor QoL in patients with acromegaly. Other identified parameters are radiotherapy, age, BMI, and employment status. An efficient acromegaly service should address these aspects when devising disease management plans. BDI-II = Beck Depression Inventory II BEI = Bern Embitterment Inventory BMI = body mass index IGF-1 = insulin-like growth factor 1 MCS = mental component summary (score) PCS = physical component summary (score) QoL = quality of life SDS = standard deviation score SF-36 = Short Form-36 Health Survey.

  12. Effect of overexpression of vascular endothelial growth factor 165 on the osteogenic potential of bone morphogenetic protein%VEGF165过表达对BMP2成骨细胞分化影响的实验研究

    Institute of Scientific and Technical Information of China (English)

    张聪; 刘洪美; 李庆伟; 陈国武; 梁啸; 孟纯阳

    2015-01-01

    [目的]探讨腺病毒转染血管内皮生长因子165(vascular endothelial growth factor 165,VEGF165)对骨形态发生蛋白(bone morphogenetic protein 2,BMP2)促成骨细胞分化的抑制性作用研究.[方法]采用密度梯度离心法分离兔骨髓间充质干细胞(Bone marrow mesenchymal stem cells,BMSCs),取第3代BMSCs进行细胞表型鉴定并作为细胞实验对象,使用Ad-BMP2和Ad-BMP2-VEGF165载体体外转染BMSCs,倒置荧光显微镜下观察GFP表达变化;同时ELISA和Westem blot检测BMP2和VEGF165蛋白的表达.然后,应用成骨细胞诱导培养液定向诱导BMSCs向成骨细胞分化.实验分3组:Ad-BMP2-VEGF165转染BMSCs组(Ad-BMP2-VEGF165组),Ad-BMP2转染BMSCs组(Ad-BMP2组),BMSCs组(对照组).分别在成骨细胞诱导培养后7、14、21 d,通过Real-time PCR分析ALP和OC mRNA相对表达水平和碱性磷酸酶(alkaline phosphatase,ALP)活性测定、骨钙素(Osteocalcin,OC)免疫组化染色来评价各组BMSCs成骨分化潜能的影响. [结果]第3代细胞表面高表达CD29(99.82%)、CD44 (94.14%),低表达CD14 (3.11%)、CD34 (0.34%);腺病毒转染后第5 h BMP2和hVEGF165蛋白水平表达最高;成骨细胞诱导培养14和21 d后,Ad-BMP2组成骨相关基因表达、OC免疫组化和ALP活性表达最高,结果与其他两组相比较差异具有统计学意义(P<0.05);而对照组表达最弱,与Ad-BMP2-VEGF165组比较差异具有统计学意义(P<0.05).[结论]腺病毒载体Ad-BMP2与Ad-BMP2-VEGF165转染BMSCs后,均具有明显促进BMSCs体外诱导成骨细胞分化潜能,但Ad-BMP2诱导作用更为显著,同时说明VEGF165可能对BMSCs成骨细胞分化起抑制作用.

  13. The (pi sup + ,pd) and (pi sup + ,dd) reactions on light nuclei at 100 and 165 MeV incident pion energies

    CERN Document Server

    Huber, G M; Papandreou, Z; Hovdebo, J; Naqvi, S I H; Ottewell, D F; Walden, P L; Jones, G; Aslanoglou, X

    2002-01-01

    The (pi sup + ,pd), and (pi sup + ,dd) reactions on sup 6 Li and sup 1 sup 2 C targets were investigated with pions of 100 and 165 MeV kinetic energy. The experimental apparatus employed for this work is characterized by good energy resolution (d dominated the observed deuteron yield. The contribution of direct quasitriton absorption is significant only at 100 MeV.

  14. Clinical analysis of 165 cases whose bronchoalveolar lavage lfuid bacterial culture were positive%支气管肺泡灌洗液细菌培养阳性患儿165例临床分析

    Institute of Scientific and Technical Information of China (English)

    李海燕; 余璐; 叶乐平; 杨锦红; 董琳; 李昌崇

    2016-01-01

    Objective: To investigate the clinical characteristics, pathogen spectrum and antibiotic drug sensitive test of patients whose bronchoalveolar lavage lfuid culture were positive. To provide the theory basis for clinical diagnosis and treatment for lower respiratory infection in children.Methods: A retrospective review was performed on 1 159 hospitalized cases from January 1, 2013 to December 31, 2015. The information of the patients whose BLAF were sent to lab including clinical data, bacterial culture and drug sensitivity was ana-lyzed.Results: The bacterial culture of BALF in 165 cases were positive, among whom 99(60.0%) were male and 66(40.0%) female. Overall, 70.4% cases were suffered from pneumonia, especially bronchopneumonia. 19 cases (11.5%) were diagnosed as bronchiolitis and combined with bacterial infection. And 12 cases (7.3%) had protracted bacterial bronchitis. One hundred and sixty ifve organisms from BALF were collected in the survey period, including 112(67.9%) gram-positive bacteria and 53(32.1%) gram-negative bacteria. The ifve most fre-quently isolated pathogens wereStreptococcus pneumoniae (102 strains),Haemophilus inlfuenza (14 strains), Pseudomonas aeruginosa (13 strains),Escherichia coli (8 strains) andStraphylococcus aureus (8 strains). Sixty ifve cases (39.4%) had underlying disease and the most common one was deformity of respiratory tract (22 cases) such as malacia, stenosis of trachea or bronchus. There were 14 cases suffered from bronchial asthma. Among 102Streptococcus pneumoniae strains, there were 25 strains penicillin-sensitiveS. pneumoniae, 35 strains pen-icillin-intermediateS. pneumonia and 42 penicillin-resistantS. pneumonia. MostStaphylococcus aureus strains were methicillin-resistant and there was no vancomycin and linezolid-resistant strain. The drug resistant rates ofHaemophilus inlfuenzae to penicillin and the second generation of cephalosporin were high. However, it was sensitive to the third generation of cephalosporin

  15. Regulable vascular endothelial growth factor165 overexpression by ex vivo expanded keratinocyte cultures promotes matrix formation, angiogenesis, and healing in porcine full-thickness wounds.

    Science.gov (United States)

    Dickens, Stijn; Vermeulen, Pieter; Hendrickx, Benoit; Van den Berge, Stefaan; Vranckx, Jan J

    2008-01-01

    The intricate wound repair process involves the interplay of numerous cells and proteins. Using a porcine full-thickness wound (FTW) healing model, we hypothesized that the ex vivo gene transfer of vascular endothelial growth factor (VEGF)-transfected basal keratinocyte (KC) cell suspensions may generate cross-talk and induce matrix formation, angiogenesis, and accelerated healing. Moreover, to regulate overexpression of isoform 165 of VEGF and its effect on healing, we introduced a tetracycline (TC)-inducible gene switch in the expression plasmid. Autologous basal KCs were cultivated from the porcine donor and transfected using cationic liposomes. A dose-response curve was established to determine optimal activation of the gene switch by TC. In vivo, FTWs were treated with VEGF-transfected KCs and controls. Wound fluids were collected daily and examined using enzyme-linked immunosorbent assay. Biopsies were evaluated using hematoxylin and eosin and immunostaining for fibronectin, CD144, and lectin BS-1. In vitro, highest regulable VEGF165-expression was obtained with 1 microg/mL of TCs. In vivo, after induction of the gene switch by adding 1 microg/mL of TCs to the FTW, we obtained upregulated VEGF165 levels and enhanced fibronectin deposition and found more endothelial cell tubular formations and higher rates of reepithelialization than in controls. This ex vivo gene transfer model may serve as a platform for vascular induction in full-thickness tissue repair.

  16. 老年牙齿楔状缺损患者165例临床分析及预防措施研究%Clinical Analysis and Preventive Measures of 165 Elderly Patients with Wedge-shaped Defects

    Institute of Scientific and Technical Information of China (English)

    杨士杰

    2011-01-01

    目的 分析老年牙齿楔状缺损患者的发病特点,探讨有效的临床预防措施.方法 选择2007年11月-2010年10月清苑县妇幼保健院就诊的老年牙齿楔状缺损患者165例,记录患者的患病情况并采用提间的方式对与发病可能有关的情况进行调查.结果 老年牙齿楔状缺损好发于第一双尖牙,且楔缺损害以盘型,2度更为常见;横刷法刷牙、刷牙次数≥3次/d、喜食酸性食物以及牙周退缩者更容易发生楔状缺损.结论 临床医生应该掌握老年牙齿楔状缺损的发病特点,针对性进行宣传教育工作,以减少牙齿楔状缺损的发病率.%Objective To analyze the onset characteristics of elderly patients with wedge - shaped defects, and to explore the effective clinical preventive measures. Methods One hundred and sixty - five elderly patients with wedgeshaped defects hospitalized in the Maternal and Child Health Hospital of Qingyuan County from November 2007 to October 2010 were enrolled in this study. Their sickness status was recorded and the related situations of the disease were surveyed by questionnaires. Results Wedge- shaped defects in the first premolar were commonly seen in elderly patients, moreover, the disc wedge and type 2 degrees were more common in the lack of damage. The patients with cross - brushing method, brushing frequency≥3 times/day, eating acidic foods and back by periodontal wedge- shaped defect were more likely to occur wedge - shaped defects. Conclusions Dentists should grasp the onset characteristics of elderly patients with wedge - shaped defects and develop targeted publicity and education so as to reduce the incidence of wedge- shaped defects.

  17. 165例长期维持性血液透析肾性骨病患者中医证候分析%TCM Syndromes Analysis of 165 Patients with Renal Osteopathy on Maintained Hemodialysis

    Institute of Scientific and Technical Information of China (English)

    刘世巍; 张宁; 李同侠; 任可; 李建民; 姜春生; 罗燕楠

    2012-01-01

    目的:以长期维持性血液透析(MHD)肾性骨病患者为研究对象,观察其中医症状及证候分布特征,初步归纳肾性骨病中医辩证标准.方法:采用中医症状量表对165例MHD肾性骨病患者症状进行横断面调查,对调查表症状变量进行因子分析,因子分析方法为主轴因子法,并进行最大方差法正交旋转,依据中医理论对症状因子进行定性,初步得出肾性骨病类证候群,结合慢性肾功能不全中医辨证标准相关内容,拟定肾性骨病类中医证候.结果:因子载荷阵提炼出5个主要因子,结合中医理论,因子1反映了肝肾阴虚证证候,因子2反映了浊毒内蕴证证候,因子3反映了肾阳虚衰证证候,因子4反映了水湿内停证证候,因子5反映了瘀血阻络证证候.结论:归纳肾性骨病患者主要证候表现为肝肾阴虚证、浊毒内蕴证、肾阳虚衰证、水湿内停证、瘀血阻络证5个基本证型.%Objective:To analyze the characteristics of TCM syndrome of patients with renal osteodystrophy on maintained hemodialysis ( MHD). Methods:The patients symptoms, collected by a cross-sectional survey served as variables of the factor analysis which took use of the spindle factor method, accompanied with the method of the Maximum variance of orthogonal rotation. Results: Five main factors were inducted from the factor loading matrix. Conclusion : Renal osteopathy has 5 basic TCM syndromes as yin deficiency of liver and kidney syndrome, turbidity and toxin stagnation syndrome, yang deficiency of kidney syndrome, blood stasis syndrome and moisture Stagnation syndrome.

  18. Structural analysis of alkaline β-mannanase from alkaliphilic Bacillus sp. N16-5: implications for adaptation to alkaline conditions.

    Directory of Open Access Journals (Sweden)

    Yueju Zhao

    Full Text Available Significant progress has been made in isolating novel alkaline β-mannanases, however, there is a paucity of information concerning the structural basis for alkaline tolerance displayed by these β-mannanases. We report the catalytic domain structure of an industrially important β-mannanase from the alkaliphilic Bacillus sp. N16-5 (BSP165 MAN at a resolution of 1.6 Å. This enzyme, classified into subfamily 8 in glycosyl hydrolase family 5 (GH5, has a pH optimum of enzymatic activity at pH 9.5 and folds into a classic (β/α(8-barrel. In order to gain insight into molecular features for alkaline adaptation, we compared BSP165 MAN with previously reported GH5 β-mannanases. It was revealed that BSP165 MAN and other subfamily 8 β-mannanases have significantly increased hydrophobic and Arg residues content and decreased polar residues, comparing to β-mannanases of subfamily 7 or 10 in GH5 which display optimum activities at lower pH. Further, extensive structural comparisons show alkaline β-mannanases possess a set of distinctive features. Position and length of some helices, strands and loops of the TIM barrel structures are changed, which contributes, to a certain degree, to the distinctly different shaped (β/α(8-barrels, thus affecting the catalytic environment of these enzymes. The number of negatively charged residues is increased on the molecular surface, and fewer polar residues are exposed to the solvent. Two amino acid substitutions in the vicinity of the acid/base catalyst were proposed to be possibly responsible for the variation in pH optimum of these homologous enzymes in subfamily 8 of GH5, identified by sequence homology analysis and pK(a calculations of the active site residues. Mutational analysis has proved that Gln91 and Glu226 are important for BSP165 MAN to function at high pH. These findings are proposed to be possible factors implicated in the alkaline adaptation of GH5 β-mannanases and will help to further

  19. Vascular endothelial growth factor-A_(165), angiogenasis in malignant transformation of nasal inverted papilloma: the clinical significance%血管内皮生长因子-A_(165)及血管生成在鼻内翻性乳头状瘤癌变中的临床意义

    Institute of Scientific and Technical Information of China (English)

    于华鹏; 王德辉; 孙希才; 胡俐

    2009-01-01

    目的 探讨血管内皮生长因子(VEGF)-A_(165)及血管生成在鼻内翻性乳头状瘤(NIP)癌变中的临床意义,评价VEGF-A_(165)与CD105标记的微血管面数密度(MVNA)的相关性.方法 检测CD105免疫荧光标记的正常对照组(9例)、NIP组(23例)及NIP癌变组(8例)的MVNA,应用Western印迹法检测VEGF-A_(165)的表达,采用Spearman相关系数对VEGF-A_(165)蛋白表达量与CD105一MVNA的相关性进行分析.结果 正常对照组、NIP组、NIP癌变组的MVNA依次增高,分别为(33.91±17.88)、(123.35±26.02)、(171.86±49.37)个/mm~2,3组间差异均有统计学意义(P值均<0.01);VEGF-A_(165)蛋白表达依次增高,分别为(94 927.9±8 633.5)、(110 653.2±8 419.7)、(11 6357.1±3 926.5)灰度值/mm~2,3组间的差异均有统计学意义(P值均<0.05).VEGF-AA_(165)与CD105标记的MVNA呈明显正相关(r=0.735,P<0.05).结论 血管生成在NIP癌变中有重要的作用,VEGF-A_(165)与CD105标记的肿瘤MVNA呈正相关,是NIP癌变的预示指标,能为NIP的临床治疗提供参考.

  20. Analysis on birth weight of 206 165 newborns in Shanghai%上海市闵行区206 165例新生儿出生体重分析

    Institute of Scientific and Technical Information of China (English)

    黄俊; 刘蒲; 李云; 王娜; 夏红; 姜庆五

    2013-01-01

    [Objective] To assess the birth weight of live births with gestational age from 28 to 42 weeks in Minhang District and identify the related factors to provide evidences for improving newborns' constitution. [Methods] Data on birth weight and other related factors for newborns born during Jan. 2006 — Nov. 2011 were collected by the population-based electronic Health Records (eHR) system in Minhang District,Shanghai,China. [Results] A total of 206 165 live newborns were enrolled in this analysis. The mean and median birth weight were 3 343 g and 3 320 g for all newborns. Low birth weight rates were 0. 6% and 0. 9% of male and female newborns, while macrosomia accounted for 9. 0% and 5. 1% .respectively. The percentage of low birth weight and macrosomia, the average birth weight, gestational age and mothers age were significantly different between males and females (P<0. 05). Mean birth weight also differed by sex, birth calendar year,gestational age,mother's age,mode of delivery, residence type and health condition of mother(P<0. 05). [Conclusion] The average birth weight in live births is affected by several factors. Appropriate measures should be implemented to improve the situation.%[目的] 了解上海市闵行区常住居民足月新生儿出生体重的现况及其相关因素,为提高新生儿出生人口体质提供参考依据. [方法] 收集2006年1月-2011年11月上海市闵行区居民健康档案系统中登记建卡的新生儿出生体重及相关信息进行研究. [结果] 共有206165例新生儿纳入本研究,出生体重均数及中位数分别为3343 g、3320g.男女低体重儿比例分别为0.6%、0.9%;巨大儿比例分别为9.0%、5.1%.低体重比例、巨大儿比例、出生体重均数、孕周和母亲怀孕年龄在男女间差异有统计学意义(P<0.05).性别、出生年份、孕周、母亲怀孕年龄、分娩方式、户口类型、母亲健康状况均对出生体重均数有影响(P<0.05). [结论] 新生

  1. APP5肽类似物P165和罗格列酮对SH-SY5Y细胞IRS-1和p-CREB表达的影响%Effects of P165 and rosiglitazone on the expression of IRS-1 and p-CREB in SH-SY5Y cell

    Institute of Scientific and Technical Information of China (English)

    张景燕; 王蓉; 赵静姝; 姬志娟; 赵志炜; 盛树力

    2011-01-01

    观察APP5肽类似物P165和罗格列酮(rosiglitazone)对链脲佐菌素(streptozotocin,STZ)损伤人神经母细胞瘤株SH - SY5Y细胞后,胰岛素信号通路相关因子IRS-1和p-CREB表达水平的影响.方法将人神经母细胞瘤株SH-SY5Y细胞分为对照组、STZ损伤模型组(STZ 0.8mmol/L)、罗格列酮保护组(STZ 0.8 mmol/L+罗格列酮20 μmol/L),APP5肽类似物P165保护组(STZ 0.8 mmol/L+P165 30 μmol/L),进行细胞形态观察,IRS-1和p-CREB免疫细胞荧光染色观察,采用image-pro plus 图像分析软件测定平均吸光度值.结果与对照组相比,STZ损伤组细胞生长分裂减慢、突起缩短,细胞胞体皱缩,IRS-1和p-CREB免疫荧光染色强度减弱;与STZ损伤组相比,罗格列酮组和P165组突起伸展,细胞形态和细胞胞体皱缩现象明显改善,细胞出现强荧光染色.平均吸光度值测定结果显示:与对照组相比,STZ损伤组IRS-1和p-CREB平均吸光度值降低(P<0.008),与STZ损伤组相比,P165组和罗格列酮组平均吸光度值有所上升,差异均有统计学意义(P<0.008).结论APP5肽类似物P165和罗格列酮可能通过增加IRS-1、p-CREB的表达来改善STZ对于SH-SY5Y细胞的损伤,从而达到保护神经元的作用.

  2. 30-Hz-linewidth Watt output power 1.65-$\\mu$m continuous-wave singly resonant optical parametric oscillator

    CERN Document Server

    LY, Aliou; Bretenaker, Fabien

    2016-01-01

    We build a 1-Watt cw singly resonant optical parametric oscillator operating at an idler wavelength of 1.65-$\\mu$m for application to quantum interfaces. The non resonant idler is frequency stabilized by side-fringe locking on a relatively high-finesse Fabry-Perot cavity, and the influence of intensity noise is carefully analyzed. A relative linewidth down to the sub-kHz level (about 30 Hz over 2 s) is achieved. A very good long term stability is obtained for both frequency and intensity.

  3. New protein fold revealed by a 1.65 Å resolution crystal structure of Francisella tularensis pathogenicity island protein IglC

    Science.gov (United States)

    Sun, Ping; Austin, Brian P.; Schubot, Florian D.; Waugh, David S.

    2007-01-01

    Francisella tularensis is a highly infectious Gram-negative intracellular pathogen that causes the fulminating disease tularemia and is considered to be a potential bioweapon. F. tularensis pathogenicity island proteins play a key role in modulating phagosome biogenesis and subsequent bacterial escape into the cytoplasm of macrophages. The 23 kDa pathogenicity island protein IglC is essential for the survival and proliferation of F. tularensis in macrophages. Seeking to gain some insight into its function, we determined the crystal structure of IglC at 1.65 Å resolution. IglC adopts a β-sandwich conformation that exhibits no similarity with any known protein structure. PMID:17905833

  4. 超声微泡介导血管内皮生长因子基因转染大鼠阴茎组织%Ultrasound-mediated microbubble destruction enhances VEGF165 gene to the rat penis

    Institute of Scientific and Technical Information of China (English)

    唐海林; 王志刚; 李巧; 李攀; 冉海涛

    2011-01-01

    目的 探讨超声靶向破坏微泡介导血管内皮生长因子165 (VEGF165)转染于高脂模型大鼠阴茎海绵体组织的可行性.方法 以含4%胆固醇及1%胆酸饲料饲养36只2月龄雄性SD大鼠3个月,建立大鼠高脂模型,将其随机均分为高脂模型组(对照组)、VEGF165组和1.O W/cm2超声十微泡+ VEGF165组(US+ MB+ VEGF165组).于基因转染后7天处死大鼠,采用荧光定量PCR检测VEGF165基因表达水平,以Western Blot检测大鼠阴茎组织VEGF蛋白质的表达水平,用免疫组织化学法(IHC)检测大鼠阴茎组织内皮型一氧化氮合成酶(eNOS)蛋白质表达.结果 转基因7天后,US+MB+ VEGF165组VEGF165基因水平明显高于VEGF165组及对照组(P均<0.05),其阴茎海绵体组织VEGF蛋白质表达较VEGF165组及对照组增加(P均<0.05);IHC结果显示,US+ MB+ VEGF165组大鼠阴茎组织eNOS较其他组高表达(P均<0.05).结论超声靶向破坏微泡可介导VEGF165基因在大鼠高脂模型阴茎海绵体组织的高效转移,为基因治疗高脂勃起功能障碍提供了实验依据.%Objective To investigate the possibility of improving the delivery of vascular endothelial growth factor 165 (VEGFi6s) gene to cavernosum tissue in rat models of hypercholesterolemia by using ultrasound-targeted microbubble destruction (UTMD). Methods Thirty-six 2-month-old male Sprague-Dawley (SD) rats were included. The animals fed on the artificial diet containing 4 % cholesterol and 1 % cholic acid for 3 months. All rats were randomly divided into the following group averagely after the establishment of hypercholesterolemia models: Model group alone (control group). VEGF165 group and 1.0 W/cm2 ultrasonic irradiation+ microbubbles+VEGF165 group (US+MB+VEGF165 group). All rats were sacrificed and the cavernosum were harvested 7 days after UTMD. The expression of VEGF165 mRNA was detected with real time PCR, the expression of VEGF protein were detected by Western Blot, while the expression of

  5. Coexpression of vascular endothelial growth factor and its receptor KDR on gastric adenocarcinoma MGC803 cell line and stimulation of exogenous VEGF165 to MGC803 cells

    Institute of Scientific and Technical Information of China (English)

    田学军; 孟麟; 寿成超; 董志伟

    2000-01-01

    Vascular endothelial growth factor (VEGF), also known as vascular permeability factor (VPF), is an angiogenic factor playing an important role in tumor growth. VEGF/VPF interacts with endothelial cells by way of two high-affinity receptor tyrosine kinases: flt-1 and KDR. The vast majority of published studies have described expression of the VPF/VEGF receptors specifically in endothelial cells. To elucidate the further function of VEGF in solid tumor development, the coex-pression of VEGF and KDR in gastric adenocarcinoma MGC803 cell lines was shown by reverse transcription polymerase chain reaction (RT-PCR). The MGC803 tumor cells could also be strongly immunostained for KDR by immunocytochemistry. It was further demonstrated that exogenous VEGF-165 can stimulate the MGC803 cell growth in both dose-dependent and time-dependent manners by 3H-thymidine incorporation. Furthermore, anti-VEGF165 monoclonal antibody and anti-KDR monoclonal antibody could dose-dependently block the VEGF166-induced cell growth

  6. Comparison of Structures and Dielectric Properties of Bi1.65Zn1.0Nb1.5O7.225 Ceramic and Thin Film%Bi1.65Zn1.0Nb1.5O7.225陶瓷和薄膜的结构和介电性能对比

    Institute of Scientific and Technical Information of China (English)

    张效华; 辛凤; 胡跃辉; 杨丰; 陈义川

    2012-01-01

    Based on the Bi1.5Zn1.0Nb1.5O7 formula, the non-stoichiometric pyrochlore Bi1.65 Zn1.0 Nb1.5 O7.225 (BZN) ceramic was prepared by adding the Bi2O3 with 10 mol% excess amount. Bi1.65 Zn1.0 Nb1.5 O7.225 ceramics were prepared by the conventional solid-state reaction technology. Thin films were prepared on Pt/ SiO2/Si(100) substrates by pulsed laser deposition. Bi1.65Zn1.0Nb1.5 O7.225 ceramic and thin film was compared to investigate the difference of crystallinity, microstructure and dielectric properties. The results indicated that the sintered BZN ceramic and the deposited BZN thin films have a pure cubic pyrochlore structure, however, BZN thin film exhibits the strong preferential orientation of (222) plane. The lattice constant and microstructure between ceramic and thin film also both exhibit the obvious difference. After contrast the dielectric properties of ceramic and thin film, it can be concluded that the dielectric constant of BZN thin film is significantly larger than that of BZN ceramic, which can be attributed to the difference between bulk ceramic and thin film, such as thickness, density and the preferential orientation, etc.%以立方焦绿石Bi1.5Zn1.0Nb1.5O7(BZN)为配方基础,通过掺入过量10%的Bi2O3,形成Bi1.65Zn1.0Nb1.5O7.225非化学计量比分子式.采用固相反应法合成具有焦绿石立方结构的Bi1.65Zn1.0Nb1.5O7.225陶瓷,并采用脉冲激光沉积法在Pt/SiO2/Si(100)基片上制备其薄膜.对比研究了非化学计量比Bi1.5Zn1.0Nb1.5O7.225陶瓷和薄膜的结晶性能,微观形貌以及介电性能的差异.结果表明烧结的Bi1.65Zn1.0Nb1.5O7.225陶瓷和沉积的BZN薄膜都保持立方焦绿石单相结构,但是薄膜展现出较强的(222)晶面择优取向.陶瓷和薄膜的晶格常数,微观形貌都体现出差异.对比二者的介电特性后发现,Bi1.65Zn1.0Nb1.5O7.225薄膜的介电常数明显高于陶瓷的介电常数,这归因于薄膜和块体材料之间的差异,例如厚度,致密度,择优取向等.

  7. Neutron Dose measurement in the carbon ion therapy area at HIRFL (IMP) as 12C ions with energies from 165 to 350MeV/u

    CERN Document Server

    Xu, Jun-Kui; Yan, Wei-Wei; Su, You-Wu; Li, Zong-Qiang; Wang, Mao; Pang, Cheng-Guo; Xu, Chong

    2016-01-01

    The neutron dose distributions on observation distances and on observation angles were measured using a Wendi-II neutron dose-meter at the deep tumor therapy terminal at HIRFL (Heavy Ion Research Facility in Lanzhou) as 12C ions with energies from 165 to 350 MeV/u bombarding on thick solid water targets with different thickness according to the ion energies. The experimental results were compared with those calculated by FLUKA code. It is found that the experimental data was in good agreement with the calculated results. The neutron energy spectra were also studied by using the FLUKA code. The results are valuable for the shielding design of high energy heavy ion medical machines and for the individual dose assessment.

  8. MEASUREMENTS OF THE MEAN DIFFUSE GALACTIC LIGHT SPECTRUM IN THE 0.95–1.65 μm BAND FROM CIBER

    Energy Technology Data Exchange (ETDEWEB)

    Arai, T.; Matsuura, S.; Sano, K.; Matsumoto, T.; Nakagawa, T.; Onishi, Y. [Department of Space Astronomy and Astrophysics, Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Kanagawa 252-5210 (Japan); Bock, J.; Lanz, A.; Korngut, P.; Zemcov, M. [Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States); Cooray, A.; Smidt, J. [Center for Cosmology, University of California, Irvine, Irvine, CA 92697 (United States); Kim, M. G.; Lee, H. M. [Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of); Lee, D. H. [Korea Astronomy and Space Science Institute (KASI), Daejeon 305-348 (Korea, Republic of); Shirahata, M. [National Institutes of Natural Science, National Astronomical Observatory of Japan (NAOJ), Tokyo 181-8588 (Japan); Tsumura, K. [Frontier Research Institute for Interdisciplinary Science, Tohoku University, Sendai 980-8578 (Japan)

    2015-06-10

    We report measurements of the diffuse galactic light (DGL) spectrum in the near-infrared, spanning the wavelength range 0.95–1.65 μm by the Cosmic Infrared Background ExpeRiment. Using the low-resolution spectrometer calibrated for absolute spectro-photometry, we acquired long-slit spectral images of the total diffuse sky brightness toward six high-latitude fields spread over four sounding rocket flights. To separate the DGL spectrum from the total sky brightness, we correlated the spectral images with a 100 μm intensity map, which traces the dust column density in optically thin regions. The measured DGL spectrum shows no resolved features and is consistent with other DGL measurements in the optical and at near-infrared wavelengths longer than 1.8 μm. Our result implies that the continuum is consistently reproduced by models of scattered starlight in the Rayleigh scattering regime with a few large grains.

  9. Irradiation creep and void swelling of two LMR heat of HT9 at {approx}400{degrees}C and 165 dpa

    Energy Technology Data Exchange (ETDEWEB)

    Toloczko, M.B. [Univ. of California, Santa Barbara, CA (United States); Garner, F.A. [Pacific Northwest National Laboratory, Richland, WA (United States)

    1996-04-01

    Two nominally identical heats of HT9 ferritic-martensitic steel were produced, fabricated into pressurized tubes, and then irradiated in FFTF, using identical procedures. After reaching 165 dpa at {approx}400C, small differences in strains associated with both phase-related change in lattice parameter and void swelling were observed in comparing the two heats. The creep strains, while different, exhibited the same functional relationship to the swelling behavior. The derived creep coefficients, the one associated with creep in the absence of swelling and the one directly responsive to swelling, were essentially identical for the two heats. Even more significantly, the creep coefficients for this bcc ferritic-martensitic steel appear to be very similar and possibly identical to those routinely derived from creep experiments on fcc austenitic steels.

  10. Research of Spectrometric and Exploitation Characteristics of BGO-PMP-165 Scintiblock in Temperature Interval from +25 to -140$^{o}$C

    CERN Document Server

    Ainbund, M R; Gundorin, N A; Matveev, D V; Serov, D G

    2001-01-01

    Photomultipliers based on microchannel plates are used for fast systems which form time marks of physical setups as well as in special technical areas. It is not uncommon when they substitute traditional dynode system photomultipliers. The possibility of compatible work of the PMP-165 photomultiplier with BGO crystal which were cooled down to temperature necessary for appropriate functioning of a semiconductor Ge detector with taking into account of temperature dependencies of own PMP characteristics is investigated during experiment. Cooling down of the system from room temperature down to v140^{o}C during 8 hours is done. Lower limit of temperature which allows PMP to function properly is registered. Changes of spectrometric characteristics caused by temperature are studied.

  11. Titanium subhydride potassium perchlorate (TiH1.65/KClO4) burn rates from hybrid closed bomb-strand burner experiments.

    Energy Technology Data Exchange (ETDEWEB)

    Cooper, Marcia A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Oliver, Michael S. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2012-08-01

    A hybrid closed bomb-strand burner is used to measure the burning behavior of the titanium subhydride potassium perchlorate pyrotechnic with an equivalent hydrogen concentration of 1.65. This experimental facility allows for simultaneous measurement of the closed bomb pressure rise and pyrotechnic burn rate as detected by electrical break wires over a range of pressures. Strands were formed by pressing the pyrotechnic powders to bulk densities between 60% and 90% theoretical maximum density. The burn rate dependance on initial density and vessel pressure are measured. At all initial strand densities, the burn is observed to transition from conductive to convective burning within the strand. The measured vessel pressure history is further analyzed following the closed bomb analysis methods developed for solid propellants.

  12. Study of the Lambda-proton mass peak in Kaon-Deutron reaction at 1.45 and 1.65 GeV energies

    Directory of Open Access Journals (Sweden)

    M Hassanvand

    2016-06-01

    Full Text Available In this paper, we investigated the produced cusp in the Λ0 p  invariant mass spectrum from the Κ-d→ Λ0 pπ- reaction at kenergies of 1.45 and 1.65 GeV. According to these calculations the peak of spectrum was around MΛp=2130 MeV /c2 and the width was Γ=13MeV. To interpret this cusp we applied a coupled-channel treatment for the two decay processes Λp→Λp and ΣN→Λp. The results of the inelastic channel (ΣN→Λp showed more consistency to the experimental data.

  13. 1.65 Å resolution structure of the AraC-family transcriptional activator ToxT from Vibrio cholerae.

    Science.gov (United States)

    Li, Jiaqin; Wehmeyer, Graham; Lovell, Scott; Battaile, Kevin P; Egan, Susan M

    2016-09-01

    ToxT is an AraC-family transcriptional activator protein that controls the expression of key virulence factors in Vibrio cholerae, the causative agent of cholera. ToxT directly activates the expression of the genes that encode the toxin-coregulated pilus and cholera toxin, and also positively auto-regulates its own expression from the tcp promoter. The crystal structure of ToxT has previously been solved at 1.9 Å resolution (PDB entry 3gbg). In this study, a crystal structure of ToxT at 1.65 Å resolution with a similar overall structure to the previously determined structure is reported. However, there are distinct differences between the two structures, particularly in the region that extends from Asp101 to Glu110. This region, which can influence ToxT activity but was disordered in the previous structure, can be traced entirely in the current structure.

  14. 1.65 micrometers (H-band) surface photometry of galaxies; 3, observations of 558 galaxies with the TIRGO 1.5 m telescope

    CERN Document Server

    Gavazzi, G; Scodeggio, M; Boselli, A; Pierini, D; Baffa, C; Lisi, F; Hunt, L K

    1999-01-01

    We present near-infrared H-band (1.65 micron) surface photometry of 558 galaxies in the Coma Supercluster and in the Virgo cluster. This data set, obtained with the Arcetri NICMOS3 camera ARNICA mounted on the Gornergrat Infrared Telescope, is aimed at complementing, with observations of mostly early-type objects, our NIR survey of spiral galaxies in these regions, presented in previous papers of this series. Magnitudes at the optical radius, total magnitudes, isophotal radii and light concentration indices are derived. We confirm the existence of a positive correlation between the near-infrared concentration index and the galaxy H-band luminosity. (Tables 1 and 2 are only available in electronic form upon request to gavazzi@uni.mi.astro.it)

  15. Complete and incomplete fusion of $^{12}C$ with $^{165}Ho$ below 7 MeV/nucleon Measurements and analysis of excitation functions

    CERN Document Server

    Gupta, S; Musthafa, M M; Bhardwaj, H D; Prasadl, R

    2000-01-01

    This experiment has been done with a view to studying complete and incomplete fusion in heavy-ion-induced reactions. Excitation functions for several reactions induced by /sup 12/C/sup 5+/ ions on /sup 165/Ho at incident energies from 55 to 80 MeV have been measured using the activation technique. The analysis of the data has been done using the codes ALICE-91 and CASCADE. The parameter F/sub theta /, the ratio of actual moment of inertia to the rigid-body value, has been found to play an important role in the calculations done by the code CASCADE. Significant contributions from both the complete and the incomplete fusion channels have been observed. Further, in the case of the reaction (C, p3n) considerable contribution from the decay of higher charge isobar precursor has been observed. (23 refs).

  16. MiRNA Analysis by Quantitative PCR in Preterm Human Breast Milk Reveals Daily Fluctuations of hsa-miR-16-5p.

    Directory of Open Access Journals (Sweden)

    Ilaria Floris

    Full Text Available Human breast milk is an extremely dynamic fluid containing many biologically-active components which change throughout the feeding period and throughout the day. We designed a miRNA assay on minimized amounts of raw milk obtained from mothers of preterm infants. We investigated changes in miRNA expression within month 2 of lactation and then over the course of 24 hours.Analyses were performed on pooled breast milk, made by combining samples collected at different clock times from the same mother donor, along with time series collected over 24 hours from four unsynchronized mothers. Whole milk, lipids or skim milk fractions were processed and analyzed by qPCR. We measured hsa-miR-16-5p, hsa-miR-21-5p, hsa-miR-146-5p, and hsa-let-7a, d and g (all -5p. Stability of miRNA endogenous controls was evaluated using RefFinder, a web tool integrating geNorm, Normfinder, BestKeeper and the comparative ΔΔCt method.MiR-21 and miR-16 were stably expressed in whole milk collected within month 2 of lactation from four mothers. Analysis of lipids and skim milk revealed that miR-146b and let-7d were better references in both fractions. Time series (5H-23H allowed the identification of a set of three endogenous reference genes (hsa-let-7d, hsa-let-7g and miR-146b to normalize raw quantification cycle (Cq data. We identified a daily oscillation of miR-16-5p.Our assay allows exploring miRNA levels of breast milk from mother with preterm baby collected in time series over 48-72 hours.

  17. Residues Asp164 and Glu165 at the substrate entryway function potently in substrate orientation of alanine racemase from E. coli: Enzymatic characterization with crystal structure analysis.

    Science.gov (United States)

    Wu, Dalei; Hu, Tiancen; Zhang, Liang; Chen, Jing; Du, Jiamu; Ding, Jianping; Jiang, Hualiang; Shen, Xu

    2008-06-01

    Alanine racemase (Alr) is an important enzyme that catalyzes the interconversion of L-alanine and D-alanine, an essential building block in the peptidoglycan biosynthesis. For the small size of the Alr active site, its conserved substrate entryway has been proposed as a potential choice for drug design. In this work, we fully analyzed the crystal structures of the native, the D-cycloserine-bound, and four mutants (P219A, E221A, E221K, and E221P) of biosynthetic Alr from Escherichia coli (EcAlr) and studied the potential roles in substrate orientation for the key residues involved in the substrate entryway in conjunction with the enzymatic assays. Structurally, it was discovered that EcAlr is similar to the Pseudomonas aeruginosa catabolic Alr in both overall and active site geometries. Mutation of the conserved negatively charged residue aspartate 164 or glutamate 165 at the substrate entryway could obviously reduce the binding affinity of enzyme against the substrate and decrease the turnover numbers in both D- to L-Ala and L- to D-Ala directions, especially when mutated to lysine with the opposite charge. However, mutation of Pro219 or Glu221 had only negligible or a small influence on the enzymatic activity. Together with the enzymatic and structural investigation results, we thus proposed that the negatively charged residues Asp164 and Glu165 around the substrate entryway play an important role in substrate orientation with cooperation of the positively charged Arg280 and Arg300 on the opposite monomer. Our findings are expected to provide some useful structural information for inhibitor design targeting the substrate entryway of Alr.

  18. Safety and Tolerability of Theta Burst Stimulation versus Single and Paired Pulse Transcranial Magnetic Stimulation: A Comparative Study of 165 Pediatric Subjects

    Directory of Open Access Journals (Sweden)

    Yaejee H Hong

    2015-02-01

    Full Text Available Background: Although single- and paired-pulse (sp/pp transcranial magnetic stimulation (TMS studies are considered minimal risk in adults and children, the safety profile for theta-burst TMS (TBS is unknown.Objective: In this comparative analysis, we explored the rate, severity, and specific symptoms of TMS-related adverse effects (AEs between sp/ppTMS and TBS in subjects between ages 6 and 18 years.Method: Data from 165 participants from 2009-2014 were analyzed. Assessment of AEs was performed based on baseline and post-TMS administration of a symptom-based questionnaire that rated AEs on a 5-level ordinal scale (minimal, mild, moderate, marked, severe. AE rates and severity were compared using Chi Square or Fisher’s Exact Test depending on data characteristics.Result: Overall, no seizures or severe-rated AEs were reported by 165 pediatric participants. The rate of AE in all TBS sessions was 10.5% (n=76, 95% CI: 4.7 - 19.7%, whereas the rate of AE in all sp/ppTMS sessions was 12.4% (n=89, 95% CI: 6.3 - 21.0%. There was no statistical difference in AE rates between TBS and sp/ppTMS (p=0.71. In all sp/ppTMS and TBS sessions, 20 subjects reported a total of 35 AEs, among these 31 (~88.6% were rated as minimal or mild. There was no difference in the severity of AE between TBS and sp/ppTMS (p=1.0. Only one of 76 TBS participants reported an AE rated as more than minimal/mild.Conclusion: Our comparative analysis showed that TBS appears to be as safe as sp/ppTMS in terms of AE rate and severity. This report supports further investigation of TBS in children.

  19. Recombinant snake venom cystatin inhibits tumor angiogenesis in vitro and in vivo associated with downregulation of VEGF-A165, Flt-1 and bFGF.

    Science.gov (United States)

    Xie, Qun; Tang, Nanhong; Wan, Rong; Qi, Yuanlin; Lin, Xu; Lin, Jianyin

    2013-05-01

    Previous studies have shown that recombinant snake venom cystatin (sv-cystatin) inhibits the invasion and metastasis of tumor cells in vitro and in vivo. The purpose of this study was to investigate the ability of recombinant sv-cystatin to inhibit tumor angiogenesis in vitro and in vivo, and the mechanisms underlying this effect. Recombinant sv-cystatin inhibited proliferation of human umbilical vein endothelial cells (HUVECs) at 100 and 200 μg/mL after 72, 96 and 120 h. Recombinant sv-cystatin also inhibited tumor-endothelial cell adhesion at 25, 50, 100 and 200 μg/mL. Recombinant sv-cystatin inhibited capillary-like tube formation by HUVECs at 10, 25, 50, 100 and 200 μg/mL following 12, 24 and 36 h incubation. Furthermore, recombinant sv-cystatin significantly suppressed microvessel density (MVD) of lung tumor colonies in C57BL/6 mice inoculated in the lateral tail vein with B16F10 melanoma cells. Administration of recombinant sv-cystatin significantly decreased MVD of primary tumor tissues in nude mice implanted subcutaneously with human hepatocellular carcinoma cells (MHCC97H). Exposure of B16F10 and MHCC97H cells to increasing doses of recombinant sv-cystatin suppressed secretion of vascular endothelial growth factor (VEGF)-A165 and basic fibroblast growth factor (bFGF) into the surrounding medium (P cystatin (P cystatin inhibits tumor angiogenesis associated with downregulation of VEGF-A165, Flt-1 and bFGF. This suggests that recombinant sv-cystatin may have potential pharmaceutical applications as an antiangiogenic and antimetastatic therapeutic agent.

  20. 调整宫缩下屈髋手转胎头纠正持续性枕横位和枕后位165例分析%Analysis of 165 cases about adjustment contraction and hip flexion with manual rotation of fetal head correcting persistent occipitotransverse position or occipitoposterlor position

    Institute of Scientific and Technical Information of China (English)

    刘新美; 刘新领; 党赛利

    2012-01-01

    Objective To investigate the persistent occipitotransverse position or occipitoposterlor position in adjustment contraction and hip flexion of the clinical effect of manual rotation of fetal head. Methods In our courtyard from March 2010 to February 2012, 165 cases of the clinical data of persistent occipitotransverse position or occipitoposterlor position in adjustment contraction and hip flexion with manual rotation of fetal head were retrospectively analyzed. Results After adjustment contraction and hip flexion with manual rotation of fetal head, 165 maternals of persistent occipitotransverse position or occipitoposterlor position through the vagina after natural childbirth in 126 cases, tires suck midwifery 11 cases, the success rate of 83%; treated as described above invalid, cesarean section 28 cases, accounting for 17%. All newborns had no death, the maternal had no serious complications. Conclusion Persistent occipitotransverse position or occipitoposterlor position in adjustment contraction and hip flexion with manual rotation of fetal head can effectively shorten birth process, reduce maternal pain, on fetal damage, reduce the rate of cesarean section, clinical effect, is worth popularizing.%目的 探讨调整宫缩下屈髋手转胎头在持续性枕横位、枕后位的临床效果.方法对我院2010年3月~2012年2月165例持续性枕横位、枕后位在调整宫缩下屈髋配以手转胎头的临床资料进行回顾分析.结果 165例持续性枕横位和枕后位产妇,在调整宫缩下屈髋配以手转胎头后经阴道自然分娩126例,胎吸助产11例,成功率为83%;经上述处理无效,剖宫产28例,占17%.所有新生儿均无死亡,产妇也未发生严重并发症.结论持续性枕横位、枕后位通过调整宫缩下屈髋配以手转胎头能有效缩短产程,减少产妇痛苦,对胎儿损伤小,降低剖宫产率,临床效果明显,值得推广.

  1. 转染VEGF165的内皮祖细胞移植恢复糖尿病ED大鼠的勃起功能%Transplantation of endothelial progenitor cells transfected with VEGF165 to restore erectile function in diabetic rats

    Institute of Scientific and Technical Information of China (English)

    Xin Gou; Yong Chen; Wei-Yang He; Ming-Zhao Xiao; Ming Qiu; Ming Wang; Yuan-Zhong Deng; Chao-Dong Liu; Zao-Sing Tang; Re Li

    2011-01-01

    The present study investigated the effect of transplanting endothelial progenitor cells (EPCs) transfected with the vascular endothelial growth factor gene (VEGF165) into the corpora cavernosa of rats with diabetic erectile dysfunction (ED). A rat model of diabetic ED was constructed via intraperitoneal injection of streptozotocin. After streptozotocin treatment, pre-treated EPCs from each of three groups of rats were transplanted into their corpora cavernosa. Our results, following intracavernosal pressure (ICP) monitoring, showed that ICP increased significantly among rats in the trial group when compared to the results from rats in the blank-plasmid and control groups during basal conditions and electrical stimulation (P<0.01 for both comparisons). Histological examination revealed extensive neovascularisation in the corpora cavernosa of rats in the trial group. Fluorescence microscopy indicated that many of the transplanted EPCs in the trial group survived, differentiated into endothelial cells and integrated into the sites of neovascularisation. Based on the results of this study, we conclude that transplantation of VEGF165-transfected EPCs into the corpora cavernosa of rats with diabetic ED restores erectile function.

  2. 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.

  3. 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.

  4. 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.

  5. 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.)

  6. 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...

  7. 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.

  8. 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.

  9. 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.

  10. 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.

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

    Science.gov (United States)

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

    2011-08-01

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

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

    OpenAIRE

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

    1988-01-01

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

  13. Reseña: Cuba ¿Ajuste o transición? Impacto de la reforma en el contexto del restablecimiento de las relaciones con Estados Unidos, de Velia Cecilia Bobes (coord., México, Flacso, 2015, 165 pp.

    Directory of Open Access Journals (Sweden)

    Katya Rodríguez Gómez

    2015-12-01

    Full Text Available Reseña:Cuba ¿Ajuste o transición? Impacto de la reforma en el contexto del restablecimiento de las relaciones con Estados Unidos, de Velia Cecilia Bobes (coord., México, Flacso, 2015, 165 pp.

  14. Tratamiento del prolapso rectal en la infancia con infiltración de solución salina al 16,5 %

    Directory of Open Access Journals (Sweden)

    Carlos Ramírez Pérez

    Full Text Available Introducción: cuando falla el tratamiento médico conservador en los pacientes pediátricos con prolapso rectal se impone la infiltración perirrectal con sustancias irritantes. En la década de los 90 esas infiltraciones en nuestro centro se hacían con glicerina, pero escaseó en el mercado, y ante tal problema, se buscó otro agente infiltrante alternativo. En el presente trabajo se describe la experiencia con la utilización de solución salina al 16,5 %. Métodos: se realizó un estudio de intervención, longitudinal, prospectivo, experimental, del tipo ensayo clínico no controlado. Consta de una segunda parte en la que se utilizó la aleatorización con un grupo control para la validación. El universo estuvo constituido por 27 pacientes y la muestra, por 16 pacientes con prolapso rectal, que fueron atendidos en el servicio de gastroenterología del Hospital Pediátrico Provincial de Holguín en el quinquenio 2003-2007. Las variables desarrolladas fueron: concentración idónea para el tratamiento, cantidad de sustancia a infiltrar, complicaciones, recurrencia, número de infiltraciones y curación al año o más. Los resultados se exponen en forma de tablas porcentuales. Resultados: la eficacia con la utilización de solución salina al 16,5 % fue del 100 %, todos los pacientes curaron, y ninguno presentó recurrencia, por lo que no fueron necesarias 2 o más sesiones de tratamiento. Se comentó de un niño que, luego de fallar la infiltración con leche materna en primera opción y fallido también el cerclaje, finalmente resolvió con este método. Las complicaciones fueron relativamente pocas (18,9 %: un absceso, una celulitis y una retención urinaria con necesidad de sondaje durante 2 semanas, sin secuelas posteriores. Se realizó aleatorización con igual número de pacientes en quienes se usó la glicerina, los resultados del uso de ambas sustancias fueron muy parecidos, y el número de complicaciones fue ligeramente mayor en el

  15. Angiogenesis and bone regeneration of porous nano-hydroxyapatite/coralline blocks coated with rhVEGF165 in critical-size alveolar bone defects in vivo.

    Science.gov (United States)

    Du, Bing; Liu, Weizhen; Deng, Yue; Li, Shaobing; Liu, Xiangning; Gao, Yan; Zhou, Lei

    2015-01-01

    To improve the regenerative performance of nano-hydroxyapatite/coralline (nHA/coral) block grafting in a canine mandibular critical-size defect model, nHA/coral blocks were coated with recombinant human vascular endothelial growth factor(165) (rhVEGF) via physical adsorption (3 μg rhVEGF165 per nHA/coral block). After the nHA/coral blocks and VEGF/nHA/coral blocks were randomly implanted into the mandibular box-shaped defects in a split-mouth design, the healing process was evaluated by histological observation and histomorphometric and immunohistological analyses. The histological evaluations revealed the ingrowth of newly formed blood vessels and bone at the periphery and cores of the blocks in both groups at both 3 and 8 weeks postsurgery, respectively. In the histomorphometric analysis, the VEGF/nHA/coral group exhibited a larger quantity of new bone formation at 3 and 8 weeks postsurgery. The percentages of newly formed bone within the entire blocks in the VEGF/nHA/coral group were 27.3% ± 8.1% and 39.3% ± 12.8% at 3 weeks and 8 weeks, respectively, and these values were slightly greater than those of the nHA/coral group (21.7% ± 3.0% and 32.6% ± 10.3%, respectively), but the differences were not significant (P>0.05). The immunohistological evaluations revealed that the neovascular density in the VEGF/nHA/coral group (146 ± 32.9 vessel/mm(2)) was much greater than that in the nHA/coral group (105 ± 51.8 vessel/mm(2)) at the 3-week time point (P0.05). The present study indicated that nHA/coral blocks might be optimal scaffolds for block grafting in critical-size mandibular defects and that additional VEGF coating via physical adsorption can promote angiogenesis in the early stage of bone healing, which suggests that prevascularized nHA/coral blocks have significant potential as a bioactive material for bone regeneration in large-scale alveolar defects.

  16. Sources of spatial variability in light absorbing components along an equatorial transect from 165°E to 150°W

    Science.gov (United States)

    Simeon, Jennifer; Roesler, Collin; Pegau, W. Scott; Dupouy, CéCile

    2003-10-01

    Spatial variability of major light-absorbing components in seawater was analyzed at the equator from 165°E to 150°W during the Zonal Flux Cruise aboard the R/V Thompson from 20 April to 10 May 1996. Spectral absorption coefficients were separated into phytoplankton, nonphytoplankton chromophoric particulate material (CPM) and chromophoric dissolved organic material (CDOM). CPM and phytoplankton absorption account for about 20% and 80% of the total particulate absorption, respectively, above 100 m. The <0.2 μm CDOM absorption accounts for nearly 80% of the total absorption below 100 m. A significant portion of spatial variability in particulate absorption was due to conservative processes in the upper 100 m. Non-conservative spatial variability of phytoplankton absorption was zonally determined by the biomass changes of a spectrally invariant taxonomic community and vertically by photoacclimation. Distributions of size-fractionated CDOM absorption are suggestive of the presence of new (0.2 to 0.7 μm) and old (<0.2 μm) DOM pools. Photochemical reactions and microbial activity are nonconservative processes that act upon these pools, respectively. New DOM was found primarily in the upper water column, while an analysis of variance showed that <0.2 μm CDOM originating from deep water composes the background CDOM in the Equatorial Pacific.

  17. 165例小儿神经系统疾病的脑电图与头颅CT对照分析

    Institute of Scientific and Technical Information of China (English)

    宋莉莉; 周月芳; 高建慧; 周玲

    1994-01-01

    165例中脑电图(EEG)异常率为86.7%,高于头颅CT异常率39.4%。其中颅内占位及出血二者的异常率均为100%;脑发育不全及畸形EEG异常率78.9%,CT异常57.9%;颅内感染EEG均是异常,CT异常56.2%;各型原发性癫痫EEG异常率86.7%,CT异常仅8%。因此,对颅内占位及出血、脑发育不全及畸形其EEG与CT异常有较高的一致性,但CT更有定位价值,而对颅内惑染及原发性癫痫则EEG异常率高于CT。

  18. Experience of diagnosis and treatment for the perforation of peptic ulcer (analysis for 165 cases)%胃及十二指肠溃疡穿孔的诊断与治疗体会(附165例病历分析)

    Institute of Scientific and Technical Information of China (English)

    李其洲

    2003-01-01

    @@ 胃及十二指肠溃疡穿孔是普通外科常见的急腹症之一,其发病率及危险性都相当高.倘若在诊断和治疗上出现失误均可造成病人生命危险.笔者自1970~2001年共收治胃、十二指肠溃疡穿孔患者165例,为了提高对本病的诊治水平,增强今后对该病的认识,现对该组病历进行回顾性分析,并加以探讨和总结.

  19. Angiogenesis and bone regeneration of porous nano-hydroxyapatite/coralline blocks coated with rhVEGF165 in critical-size alveolar bone defects in vivo

    Directory of Open Access Journals (Sweden)

    Du B

    2015-03-01

    Full Text Available Bing Du,1,2 Weizhen Liu,1 Yue Deng,1,3 Shaobing Li,1 Xiangning Liu,4 Yan Gao,1 Lei Zhou1 1Department of Oral Implantology, Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou, People’s Republic of China; 2Center of Stomatology, The First People’s Hospital of Foshan, Foshan, Guangdong, People’s Republic of China; 3Department of Oral and Maxillofacial Surgery, Qingdao Stomatological Hospital, Qingdao, People’s Republic of China; 4Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, People’s Republic of China Abstract: To improve the regenerative performance of nano-hydroxyapatite/coralline (nHA/coral block grafting in a canine mandibular critical-size defect model, nHA/coral blocks were coated with recombinant human vascular endothelial growth factor165 (rhVEGF via physical adsorption (3 µg rhVEGF165 per nHA/coral block. After the nHA/coral blocks and VEGF/nHA/coral blocks were randomly implanted into the mandibular box-shaped defects in a split-mouth design, the healing process was evaluated by histological observation and histomorphometric and immunohistological analyses. The histological evaluations revealed the ingrowth of newly formed blood vessels and bone at the periphery and cores of the blocks in both groups at both 3 and 8 weeks postsurgery, respectively. In the histomorphometric analysis, the VEGF/nHA/coral group exhibited a larger quantity of new bone formation at 3 and 8 weeks postsurgery. The percentages of newly formed bone within the entire blocks in the VEGF/nHA/coral group were 27.3%±8.1% and 39.3%±12.8% at 3 weeks and 8 weeks, respectively, and these values were slightly greater than those of the nHA/coral group (21.7%±3.0% and 32.6%±10.3%, respectively, but the differences were not significant (P>0.05. The immunohistological evaluations revealed that the neovascular density in the VEGF/nHA/coral group (146±32.9 vessel/mm2 was much greater than

  20. Response of the sensorimotor cortex of cerebral palsy rats receiving transplantation of vascular endothelial growth factor 165-transfected neural stem cells

    Institute of Scientific and Technical Information of China (English)

    Jielu Tan; Xiangrong Zheng; Shanshan Zhang; Yujia Yang; Xia Wang; Xiaohe Yu; Le Zhong

    2014-01-01

    Neural stem cells are characterized by the ability to differentiate and stably express exogenous ge-nes. Vascular endothelial growth factor plays a role in protecting local blood vessels and neurons of newborn rats with hypoxic-ischemic encephalopathy. Transplantation of vascular endothelial growth factor-transfected neural stem cells may be neuroprotective in rats with cerebral palsy. In this study, 7-day-old Sprague-Dawley rats were divided into ifve groups: (1) sham operation (control), (2) cerebral palsy model alone or with (3) phosphate-buffered saline, (4) vascular en-dothelial growth factor 165 + neural stem cells, or (5) neural stem cells alone. hTe cerebral palsy model was established by ligating the letf common carotid artery followed by exposure to hypox-ia. Phosphate-buffered saline, vascular endothelial growth factor + neural stem cells, and neural stem cells alone were administered into the sensorimotor cortex using the stereotaxic instrument and microsyringe. Atfer transplantation, the radial-arm water maze test and holding test were performed. Immunohistochemistry for vascular endothelial growth factor and histology using hematoxylin-eosin were performed on cerebral cortex. Results revealed that the number of vas-cular endothelial growth factor-positive cells in cerebral palsy rats transplanted with vascular endothelial growth factor-transfected neural stem cells was increased, the time for ifnding water and the ifnding repetitions were reduced, the holding time was prolonged, and the degree of cell degeneration or necrosis was reduced. hTese ifndings indicate that the transplantation of vascu-lar endothelial growth factor-transfected neural stem cells alleviates brain damage and cognitive deifcits, and is neuroprotective in neonatal rats with hypoxia ischemic-mediated cerebral palsy.

  1. Is socioeconomic position associated with risk of attempted suicide in rural Sri Lanka? A cross-sectional study of 165 000 individuals

    Science.gov (United States)

    Gunnell, D; Pieris, R; Priyadarshana, C; Weerasinghe, M; Pearson, M; Jayamanne, S; Dawson, A H; Mohamed, F; Gawarammana, I; Hawton, K; Konradsen, F; Eddleston, M; Metcalfe, C

    2017-01-01

    Background Lower socioeconomic position (SEP) is associated with an increased risk of suicidal behaviour in high-income countries, but this association is unclear in low-income and middle-income countries. Methods We investigated the association of SEP with attempted suicide in a cross-sectional survey of 165 233 Sri Lankans. SEP data were collected at the household (assets, social standing (highest occupation of a household member), foreign employment and young (≤40 years) female-headed households) and individual level (education and occupation). Respondent-reported data on suicide attempts in the past year were recorded. Random-effects logistic regression models, accounting for clustering, were used to investigate the association of SEP with attempted suicide. Results Households reported 398 attempted suicides in the preceding year (239 per 100 000). Fewer assets (OR 3.2, 95% CI 2.4 to 4.4) and having a daily wage labourer (ie, insecure/low-income job; OR 2.3, 95% CI 1.6 to 3.2) as the highest occupation increased the risk of an attempted suicide within households. At an individual level, daily wage labourers were at an increased risk of attempted suicide compared with farmers. The strongest associations were with low levels of education (OR 4.6, 95% CI 2.5 to 8.4), with a stronger association in men than women. Conclusions We found that indicators of lower SEP are associated with increased risk of attempted suicide in rural Sri Lanka. Longitudinal studies with objective measures of suicide attempts are needed to confirm this association. Trial registration number NCT01146496; Pre-results. PMID:28336743

  2. Response of the sensorimotor cortex of cerebral palsy rats receiving transplantation of vascular endothelial growth factor 165-transfected neural stem cells.

    Science.gov (United States)

    Tan, Jielu; Zheng, Xiangrong; Zhang, Shanshan; Yang, Yujia; Wang, Xia; Yu, Xiaohe; Zhong, Le

    2014-10-01

    Neural stem cells are characterized by the ability to differentiate and stably express exogenous ge-nes. Vascular endothelial growth factor plays a role in protecting local blood vessels and neurons of newborn rats with hypoxic-ischemic encephalopathy. Transplantation of vascular endothelial growth factor-transfected neural stem cells may be neuroprotective in rats with cerebral palsy. In this study, 7-day-old Sprague-Dawley rats were divided into five groups: (1) sham operation (control), (2) cerebral palsy model alone or with (3) phosphate-buffered saline, (4) vascular endothelial growth factor 165 + neural stem cells, or (5) neural stem cells alone. The cerebral palsy model was established by ligating the left common carotid artery followed by exposure to hypoxia. Phosphate-buffered saline, vascular endothelial growth factor + neural stem cells, and neural stem cells alone were administered into the sensorimotor cortex using the stereotaxic instrument and microsyringe. After transplantation, the radial-arm water maze test and holding test were performed. Immunohistochemistry for vascular endothelial growth factor and histology using hematoxylin-eosin were performed on cerebral cortex. Results revealed that the number of vascular endothelial growth factor-positive cells in cerebral palsy rats transplanted with vascular endothelial growth factor-transfected neural stem cells was increased, the time for finding water and the finding repetitions were reduced, the holding time was prolonged, and the degree of cell degeneration or necrosis was reduced. These findings indicate that the transplantation of vascular endothelial growth factor-transfected neural stem cells alleviates brain damage and cognitive deficits, and is neuroprotective in neonatal rats with hypoxia ischemic-mediated cerebral palsy.

  3. Measurement of L X-ray fluorescence cross-sections for 74W at excitation energies 12, 14, 15 and 16.5 keV with synchrotron radiation

    Science.gov (United States)

    Kumar, R.; Rani, A.; Singh, R. M.; Tiwari, M. K.; Singh, A. K.

    2017-02-01

    Ll, Lα, Lβ and Lγ1 X-ray fluorescence cross-sections for 74W have been measured at excitation energies of 12, 14, 15 and 16.5 keV using synchrotron radiations. A Peltier cooled Vortex solid state detector (SII Nano Technology, USA) with an energy resolution of 138 eV at 5.96 keV X-rays was employed for analysis. The experimental results were compared with the theoretical estimates of Krause (1979), Campbell (2003) and Puri et al. (1993) and also compared with existing experimental results (Barrea and Bonzi, 2001b) of L XRF cross sections at the excitation energy of 12 and 14 keV. Present results were found to be closer to the Puri's data in comparison to existing experimental results. For the first time, to our knowledge, L XRF cross section for 74W at energies 15 and 16.5 keV are also being reported here.

  4. Dynamic change of cerebral hemodynamic after traumatic brain injury in rats following VEGF-165 gene therapy%VEGF-165基因对创伤性脑损伤脑血流动力学影响的实验研究

    Institute of Scientific and Technical Information of China (English)

    刘科; 唐文渊

    2012-01-01

    Objective To study the exogenous vascular endothelial growth factor (VEGF) gene therapy for traumatic brain injury (TB1) in rats by using CT perfusion (CTP) and to probe into the dynamic changes in local cerebral hemodynamic. Methods TBI rat models were established and were randomly divided into 3 groups, that is, TBI + VEGF group, control group, and TBI group. The expressions of VEGF mRNA in injury area were detected by reverse transcription polymerase chain reaction (RT-PCR) at 1 h, 6 h, 24 h, 3 d, 7 d, 14 d after brain injury. CT perfusion (CTP) at different time points was used to monitor the dynamic changes of the cerebral blood flow (CBV), cerebral blood volume (CBF) and other parameters before and after VEGF-165 gene therapy. Results Integral optical density (IOD) levels in TBI + VEGF group were significant higher than that of TBI and vector control group (P<0.05). CTP parameters and false-color image showed that CBF and CBV was increasing in TBI + VEGF group at 24 h after injury, and at 3 d and 7d after injury the cerebral perfusion was significantly higher in TBI + VEGF group than in TBI group (P <0. 05). At 14 d after injury, CBF and CBV began to decrease, but they were still higher than that of TBI group. Conclusion Exogenous VEGF gene can increase the cerebral perfusion after the traumatic brain injury and improve the microcirculation which provides the basis for the recovery of brain tissues.%目的 研究外源性血管内皮细胞生长因子(VEGF)基因治疗大鼠创伤性脑损伤(TBI)后脑灌注的变化,了解其血流动力学改变.方法 创伤性脑损伤大鼠模型建立后随机分为3组:治疗组,质粒对照组,外伤组.通过RT-PCR检测脑伤后1h、6h、24h、3d、7d、14 d VEGF mRNA在损伤局部的表达改变;应用CT灌注像(CTP)研究不同时间脑血流量(CBF)、脑血容量(CBV)等参数在VEGF-165基因治疗前后的动态变化.结果 VEGF-165基因治疗创伤性脑损伤大鼠后经RT-PCR扩增的VEGF mRNA绝对

  5. The Clinical Curative of Amlodipine Combine With Benazepril in Treatment of 165 Patients With Diabetes Complicated Hypertensive%氨氯地平联合贝那普利治疗糖尿病合并高血压165例的临床疗效

    Institute of Scientific and Technical Information of China (English)

    张丽玮; 岳砚芳

    2015-01-01

    目的:分析在糖尿病合并高血压的治疗中将氨氯地平和贝那普利联合使用的临床疗效。方法选取我院2013年5月~2015年4月收治的165例冠糖尿病合并高血压患者,以用药为依据将患者分组,实行单一苯磺酸左旋氨氯地平治疗患者设为A组,实行单一贝那普利治疗患者设为B组,实行氨氯地平和贝那普利联合治疗患者设为C组,对3组患者在用药后血压水平改善情况、临床治疗情况以及不良反应发生情况进行比对分析。结果 C组总有效94.55%,高于A组总有效69.09%与B组总有效67.27%;C组舒张压和收缩压好于A组和B组;C组不良反应发生率与A组和B组相比较低,P<0.05,差异具有统计学意义。结论在糖尿病合并高血压的治疗中采用氨氯地平和贝那普利的临床作用更为突出,提高了临床治疗效果,有效地改善了血压水平。%Objective To investigate the clinical effect of amlodipine combined with benazepril in treating 165 patients with diabetes complicated hypertensive.MethodsSelected 165 cases with diabetes complicated hypertensive from May 2013 to April 2015 in our hospital, were divided into three groups according to medications. Group A was given levamlodipine besylate, group B was given benazepril, and group C was given amlodipine combined with benazepril. Compared the blood pressure level changes, clinical treatment situation and adverse reaction rate of the three groups. Results Total efficiency of group C was 94.55%, higher than group A 69.09% and group B 67.27%. Diastolic and systolic blood pressure of group C was better than group A and group B. Adverse reaction rate of group C was lower than group A and group B,P<0.05, had difference statistically signiifcance.Conclusion Amlodipine combined with benazepril in treating patients with diabetes complicated hypertensive has significant clinical effect. It can improve clinical effect and blood pressure levels and

  6. Asociación entre incidencia de tuberculosis e Índice de Desarrollo Humano en 165 países del mundo

    Directory of Open Access Journals (Sweden)

    Diana M Castañeda-Hernández

    Full Text Available Objetivos. Evaluar la relación entre el índice de desarrollo humano (IDH y la incidencia de tuberculosis (TB en 165 países del mundo en el período 2005-2011. Materiales y métodos. Se realizó un estudio ecológico para el cual el IDH se obtuvo de la base de datos del Fondo de Naciones Unidas para el Desarrollo (PNUD y la incidencia de TB del Programa Alto a la TB de la Organización Mundial de la Salud (OMS. Se evaluó la variación anual de las variables y se realizaron modelos de regresión no lineales (exponencial. Resultados. Al analizar los datos con los modelos de regresión no lineal, se observó que los países con mayores tasas de incidencia de TB fueron aquellos con menores valores de IDH, siendo significativa su asociación (p<0,01. De igual forma se observó que en los países, la variación en el tiempo se asoció significativamente con la variación en el IDH. Conclusiones. Se ha encontrado una relación inversa y significativa entre el IDH y la morbilidad por TB en los países estudiados, incluidos tanto los países de mayor carga de enfermedad como los de la región andina en Latinoamérica. Esta información refleja la influencia significativa de indicadores socioeconómicos como el IDH sobre la tasa de incidencia de la TB, especialmente en países endémicos, siendo inversa entre ambos tipos de variables; con el incremento o mejoría del IDH la tasa de incidencia de la enfermedad disminuyó o se encontró siendo significativamente menor

  7. Asociación entre incidencia de tuberculosis e Índice de Desarrollo Humano en 165 países del mundo

    Directory of Open Access Journals (Sweden)

    Diana M. Castañeda-Hernández

    2013-12-01

    Full Text Available Objetivos. Evaluar la relación entre el índice de desarrollo humano (IDH y la incidencia de tuberculosis (TB en 165 países del mundo en el período 2005-2011. Materiales y métodos. Se realizó un estudio ecológico para el cual el IDH se obtuvo de la base de datos del Fondo de Naciones Unidas para el Desarrollo (PNUD y la incidencia de TB del Programa Alto a la TB de la Organización Mundial de la Salud (OMS. Se evaluó la variación anual de las variables y se realizaron modelos de regresión no lineales (exponencial. Resultados. Al analizar los datos con los modelos de regresión no lineal, se observó que los países con mayores tasas de incidencia de TB fueron aquellos con menores valores de IDH, siendo significativa su asociación (p<0,01. De igual forma se observó que en los países, la variación en el tiempo se asoció significativamente con la variación en el IDH. Conclusiones. Se ha encontrado una relación inversa y significativa entre el IDH y la morbilidad por TB en los países estudiados, incluidos tanto los países de mayor carga de enfermedad como los de la región andina en Latinoamérica. Esta información refleja la influencia significativa de indicadores socioeconómicos como el IDH sobre la tasa de incidencia de la TB, especialmente en países endémicos, siendo inversa entre ambos tipos de variables; con el incremento o mejoría del IDH la tasa de incidencia de la enfermedad disminuyó o se encontró siendo significativamente menor

  8. The observation of effects with Q-switched Nd:YAG laser on 165 cases of naevus fuscocaeruleus zygomaticus%调Q开关Nd:YAG激光治疗165例颧部褐青色痣疗效观察

    Institute of Scientific and Technical Information of China (English)

    牟韵竹; 张正中; 杜华英; 周国富; 谭颖; 李咏; 王曦; 李利

    2010-01-01

    目的:观察调Q开关Nd:YAG激光治疗颧部褐青色痣的临床疗效和安全性.方法:应用Q开关Nd:YAG激光治疗颧部褐青色痣患者165例,选用波长1064nm,能量密度4.5~6.0J/cm2,光斑直径3mm,频率1~10Hz;532nm波长能量密度为1.8~2.2J/cm2,光斑直径3mm,频率1~10Hz,共治疗2~5次,术后3个月复诊判定疗效和不良反应.结果:共治愈45例,平均治疗2.6次,总有效率74.1%.术后发生色素沉着89例,无瘢痕发生.结论:调Q开关Nd:YAG激光治疗颧部褐青色痣疗效好,安全性高,不良反应较轻.

  9. Mass and charge distributions in iron-induced reactions and excitation energy division between the fragments of the 672-MeV [sup 56]Fe + [sup 165]Ho reaction

    Energy Technology Data Exchange (ETDEWEB)

    Madani, H.

    1993-01-01

    The projectile-like and target-like fragments produced by the 12-MeV/nucleon [sup 56]Fe + [sup 165]Ho reaction were detected in coincidence. The measured parameters were the mass, charge, kinetic energy scattering angle of the projectile-like fragments, and the scattering angle of the target-like fragments. The mass and charge distributions of the projectile-like fragments were generated as a function of energy loss, and characterized by their centroids, variances, and correlation coefficients. The neutron drift of the measured projectile-like products is mostly due to evaporative processes, while the charge drift is a result of a net transfer of protons from the projectile-like fragment to the target-like fragment. The result is a weak drift of the system towards mass asymmetry. The predictions of two nucleon exchange models are compared to the experimental results of the 672-MeV [sup 56]Fe + [sup 165]Ho reaction and other Fe-induced reactions. The fairly good agreement between the experimental and theoretical variances verifies the prevalence of a nucleon exchange mechanism in these reactions. The information from the coincidence measurement and two-body kinematics are used to reconstruct the pre-evaporation masses of the projectile-like and target-like fragments of the reaction. Statistical evaporation calculations are used to translate these masses into excitation energies of the primary fragments. The ratio of excitation energy stored in the projectile-Mm fragment decreases with increasing energy loss, in qualitative agreement with previous measurements; however, higher ratios are observed for the 672-MeV [sup 56]Fe on [sup 165]Ho system.

  10. Mass and charge distributions in iron-induced reactions and excitation energy division between the fragments of the 672-MeV 56Fe + 165Ho reaction

    Energy Technology Data Exchange (ETDEWEB)

    Madani, Houria [Univ. of Maryland, College Park, MD (United States)

    1993-01-01

    The projectile-like and target-like fragments produced by the 12-MeV/nucleon 56Fe + 165Ho reaction were detected in coincidence. The measured parameters were the mass, charge, kinetic energy scattering angle of the projectile-like fragments, and the scattering angle of the target-like fragments. The mass and charge distributions of the projectile-like fragments were generated as a function of energy loss, and characterized by their centroids, variances, and correlation coefficients. The neutron drift of the measured projectile-like products is mostly due to evaporative processes, while the charge drift is a result of a net transfer of protons from the projectile-like fragment to the target-like fragment. The result is a weak drift of the system towards mass asymmetry. The predictions of two nucleon exchange models are compared to the experimental results of the 672-MeV 56Fe + 165Ho reaction and other Fe-induced reactions. The fairly good agreement between the experimental and theoretical variances verifies the prevalence of a nucleon exchange mechanism in these reactions. The information from the coincidence measurement and two-body kinematics are used to reconstruct the pre-evaporation masses of the projectile-like and target-like fragments of the reaction. Statistical evaporation calculations are used to translate these masses into excitation energies of the primary fragments. The ratio of excitation energy stored in the projectile-Mm fragment decreases with increasing energy loss, in qualitative agreement with previous measurements; however, higher ratios are observed for the 672-MeV 56Fe on 165Ho system.

  11. NOGA-guided analysis of regional myocardial perfusion abnormalities treated with intramyocardial injections of plasmid encoding vascular endothelial growth factor A-165 in patients with chronic myocardial ischemia: subanalysis of the EUROINJECT-ONE multicenter double-blind randomized study

    DEFF Research Database (Denmark)

    Gyongyosi, Mariann; Khorsand, Aliasghar; Zamini, Sholeh;

    2005-01-01

    . The ROI was projected onto the baseline and follow-up rest and stress polar maps of the 99m-Tc-sestamibi/tetrofosmin single-photon emission computed tomography scintigraphy calculating the extent and severity (expressed as the mean normalized tracer uptake) of the ROI automatically. The extents of the ROI....... CONCLUSIONS: Projection of the NOGA-guided injection area onto the single-photon emission computed tomography polar maps permits quantitative evaluation of myocardial perfusion in regions treated with angiogenic substances. Injections of phVEGF A165 plasmid improve, but do not normalize, the stress...

  12. Construction of plant seed-specific expression vectors pSCB and pSCAB and the obtainment of transgenic Brassica napus H165 expressing poly-3-hydroxybutyrate synthetic genes

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The seed-specific promoter and transit peptide were amplified and fused to the three genes phbA, phbB and phbC encoding PHB synthetic enzymes, respectively. Seed-specific expression vectors pSCB containing phbC and phbB, and pSCAB containing phbC, phbB and phbA, were constructed by introducing the genes with promoter and peptide into the binary vector pBI101. Transgenic Brassica napus H165 were obtained by Agrobacterium-mediated transformation with these vectors. They were confirmed by PCR, Southern and RT-PCR analyses.

  13. 非移植患者侵袭性真菌病165例病原谱和易感因素分析%Analysis of pathogenic spectrum and risk factors in 165 non-transplant patients with invasive fungal disease

    Institute of Scientific and Technical Information of China (English)

    闫晓培; 宗峰; 赵新云; 孙凯; 金琳羚; 王晶晶; 孔辉; 解卫平

    2014-01-01

    目的 了解侵袭性真菌病的病原谱、临床特征和易感因素,提高临床医生对真菌感染的认识,为临床早期诊治提供依据.方法 回顾性分析南京医科大学第一附属医院2006 2012年收治的165例非移植侵袭性真菌病患者的临床资料,按照统一标准重新确定诊断级别并分析其科室分布、临床表现、病原谱及易感因素.结果 165例中,男90例,女75例,年龄14 ~ 90岁,平均(54±15)岁.呼吸科病例52例(31.5%);菌群分布以隐球菌最多(91例,54.9%),其次为曲霉(52例,31.4%)和毛霉(10例,5.9%).肺真菌病的临床表现多为咳嗽、咳痰、咯血及发热,影像学表现多样但无特异性,结节或实变影较经典的曲霉球、晕轮征及新月征更为常见.基础疾病前3位依次为糖尿病(26例,15.8%)、慢性阻塞性肺疾病(22例,13.3%)和血液系统恶性肿瘤(17例,10.3%),66.1%(109例)的患者存在1种或多种高危因素(如联合使用抗生素≥7 d、侵入性操作、长期使用糖皮质激素或免疫抑制剂等),合并2种及以上高危因素的患者病死率升高.结论 非移植患者侵袭性真菌病前3位病原体分别为隐球菌、曲霉及毛霉,肺和脑是最常见的感染部位;相对于隐球菌感染,曲霉和毛霉感染多存在基础疾病;低蛋白血症和长期使用广谱抗生素是常见的易感因素.%Objective To describe the clinical characteristics of and risk factors for invasive fungal disease,and therefore to improve the early diagnosis and treatment of fungal infections.Methods The clinical data of invasive fungal disease in 165 patients without transplantation from 2006 to 2012 in the First Affiliated Hospital of Nanjing Medical University were retrospectively analyzed.The diagnosis was based on the following guidelines:diagnosis and treatment guidelines of critically ill patients with invasive fungal infection(2007),diagnostic criteria and treatment principle of invasive fungal

  14. 电穿孔介导的pIRES-hVEGF165-EGFP转染对牵引成骨过程中早期血管生成的影响%Effect of electroporation mediated transfecting recombinant plasmid pIRES-hVEGF165-EGFP on angiogene-sis of distraction area during early mandibular distraction osteogenesis

    Institute of Scientific and Technical Information of China (English)

    吴国平; 黎德平; 何小川; 李盛华; 杨智慧; 廖毅; 郭力

    2010-01-01

    目的 探讨电穿孔介导的基因治疗对下领骨牵引成骨过程中早期血管生成的影响.方法 32只新西兰大白兔随机分为4组:质粒+电穿孔组(A组),质粒组(B组),生理盐水+电穿孔组(C组),空白对照组(D组).各组动物分别于注射后1、3、7、14 d处死,取牵引区组织进行组织学检查、电镜观察、CD34免疫组织化学染色及微血管密度检测.结果 A、B组血管内皮细胞呈增殖活跃状态;C、D组多数血管内皮细胞部分呈现退变及凋亡早期改变.免疫组化染色发现,转染后第1天血管壁内皮细胞浆CD34表达较弱;第3、7、14天,牵引区肉芽组织血管内皮细胞均出现CD34阳性表达.A组CD34阳性表达较B组强,A、B组的CD34表达持续阳性且呈上升趋势;C、D组表达最弱,CD34阳性表达维持在第1天水平上平稳波动.结论 电穿孔介导的pIRES-hVEGF165-EGFP重组质粒体内转染能够促进牵引区早期微血管的生成,使局部血管增生、渗入,增加骨断端的血流量.对调节和促进骨的生长和修复过程具有重要作用.%Objective To explore the effect of electroporation mediated gene therapy on angiogene-sis of the distraction area during early mandibular distraction osteogenesis (DO). Methods Thirty-two New-Zeland rabbits were randomly divided into 4 groups: group A: recombinant plasmid pIRES-VEGF165-EGFP and electroporation; group B: recombinant plasmid pIRES-VEGF165-EGFP; group C: normal saline (NS) and electroporation and group D: control group. The rabbits were sacrificed at 1d, 3d, 7d and 14d after injection, respectively. The distraction area tissue was removed for histological examination and electron microscopy, and immunohistochemical stain for CD34 was performed to detect the microvessel density. Results Generation of vascular endothelial cells (VEC) in the group A and group B were active, and majority of VEC in groups C and D took on early change of cataplasia and apoptosis. The

  15. Corrective Action Investigation Plan for Corrective Action Unit 165: Areas 25 and 26 Dry Well and Washdown Areas, Nevada Test Site, Nevada (including Record of Technical Change Nos. 1, 2, and 3) (January 2002, Rev. 0)

    Energy Technology Data Exchange (ETDEWEB)

    U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office (NNSA/NV)

    2002-01-09

    This Corrective Action Investigation Plan contains the U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office's approach to collect the data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 165 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 165 consists of eight Corrective Action Sites (CASs): CAS 25-20-01, Lab Drain Dry Well; CAS 25-51-02, Dry Well; CAS 25-59-01, Septic System; CAS 26-59-01, Septic System; CAS 25-07-06, Train Decontamination Area; CAS 25-07-07, Vehicle Washdown; CAS 26-07-01, Vehicle Washdown Station; and CAS 25-47-01, Reservoir and French Drain. All eight CASs are located in the Nevada Test Site, Nevada. Six of these CASs are located in Area 25 facilities and two CASs are located in Area 26 facilities. The eight CASs at CAU 165 consist of dry wells, septic systems, decontamination pads, and a reservoir. The six CASs in Area 25 are associated with the Nuclear Rocket Development Station that operated from 1958 to 1973. The two CASs in Area 26 are associated with facilities constructed for Project Pluto, a series of nuclear reactor tests conducted between 1961 to 1964 to develop a nuclear-powered ramjet engine. Based on site history, the scope of this plan will be a two-phased approach to investigate the possible presence of hazardous and/or radioactive constituents at concentrations that could potentially pose a threat to human health and the environment. The Phase I analytical program for most CASs will include volatile organic compounds, semivolatile organic compounds, Resource Conservation and Recovery Act metals, total petroleum hydrocarbons, polychlorinated biphenyls, and radionuclides. If laboratory data obtained from the Phase I investigation indicates the presence of contaminants of concern, the process will continue with a Phase II investigation to define the extent of contamination. Based on the

  16. Preresidue'' light charged particles from [sup 28]Si+[sup 165]Ho, [sup 16]O+[sup 197]Au, and [sup 16]O+[sup 208]Pb fusion

    Energy Technology Data Exchange (ETDEWEB)

    Fineman, B.J.; Brinkmann, K.; Caraley, A.L.; Gan, N.; McGrath, R.L.; Velkovska, J. (Physics Department, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States))

    1994-10-01

    Proton and [alpha]-particle spectral shapes and multiplicities have been measured in coincidence with evaporation residues from 145 to 220 MeV [sup 28]Si+[sup 165]Ho and 115 and 140 MeV [sup 16]O+[sup 197]Au,[sup 208]Pb fusion reactions. Evaporation residues were separated using an electrostatic deflector and detected with large area surface barrier detectors. Light charged particles were detected at forward and backward angles with 14 single NaI detectors. In the context of the statistical model, the charged particle spectra provide information about the shapes and level densities of the emitting systems. Deformed emitters are inferred, and to a varying degree, an energy-dependent level density parameter is compatible with the data in each of the three cases. Implications for current fusion and fission dynamics studies are discussed.

  17. How do country risk and national cultural differences between partners affect the survival of international alliances in emerging countries? Longitudinal analysis of 165 international joint ventures in Brazil 1974 to 2005

    Directory of Open Access Journals (Sweden)

    Pierre-Xavier Meschi

    2007-06-01

    Full Text Available This article aims at identifying the individual and joint impact of two « country-level variables », namely national distance and country risk, on the survival of international joint ventures in emerging countries. Research hypotheses predicting the negative impact of national distance and country risk on survival are formulated in this article. These research hypotheses are tested in a sample of 165 international joint ventures that were formed in Brazil between 1974 and 2003. These joint ventures were subjected to an event history analysis over a period of time ranging from 1974 to 2005. The empirical results show that the intercultural dynamics increases the instability of international joint ventures whereas the survival of these alliances does not seem to be affected by the economic and political uncertainty of Brazil. Furthermore, the national distance between local and foreign partners has effects on survival that are variable according to the life cycle of international joint ventures.

  18. Countermeasures of Stimulated-Raman-Scattering-Induced Video Distortion in 1.65 μm Optical Time-domain Reflectometer On-line Monitoring 1.55 μm Cable Television System

    Science.gov (United States)

    Tsai, Szu-Chi; Tu, Yuan-Kuang; Chen, Yung-Kuang

    2003-07-01

    The countermeasures of stimulated-Raman-scattering (SRS)-induced baseband video distortion in the 1.65 μm optical time-domain reflectometer (OTDR) on-line monitoring 1.55 μm amplitude modulation with vestigial sideband (AM-VSB) cable television (CATV) transmission system are investigated theoretically and experimentally. The countermeasures entail the reduction in the optical modulation index (OMI) of the AM transmitter, OTDR peak power and/or pulse width. The results of numerical simulations and experimental measurements are in good agreement. Moreover, the countermeasure for eliminating the SRS-induced baseband video distortion by the 1.31 μm OTDR on-line monitoring technique is investigated and demonstrated.

  19. Vaccination with a recombinant protein encoding the tumor-specific antigen NY-ESO-1 elicits an A2/157-165-specific CTL repertoire structurally distinct and of reduced tumor reactivity than that elicited by spontaneous immune responses to NY-ESO-1-expressing Tumors.

    Science.gov (United States)

    Bioley, Gilles; Guillaume, Philippe; Luescher, Immanuel; Bhardwaj, Nina; Mears, Gregory; Old, Lloyd; Valmori, Danila; Ayyoub, Maha

    2009-01-01

    In a recent vaccination trial assessing the immunogenicity of an NY-ESO-1 (ESO) recombinant protein administered with Montanide and CpG, we have obtained evidence that this vaccine induces specific cytolytic T lymphocytes (CTL) in half of the patients. Most vaccine-induced CTLs were directed against epitopes located in the central part of the protein, between amino acids 81 and 110. This immunodominant region, however, is distinct from another ESO CTL region, 157-165, that is a frequent target of spontaneous CTL responses in A2+ patients bearing ESO tumors. In this study, we have investigated the CTL responses to ESO 157-165 in A2+ patients vaccinated with the recombinant protein. Our data indicate that after vaccination with the protein, CTL responses to ESO 157-165 are induced in some, but not all, A2+ patients. ESO 157-165-specific CTLs induced by vaccination with the ESO protein were functionally heterogeneous in terms of tumor recognition and often displayed decreased tumor reactivity as compared with ESO 157-165-specific CTLs isolated from patients with spontaneous immune responses to ESO. Remarkably, protein-induced CTLs used T-cell receptors similar to those previously isolated from patients vaccinated with synthetic ESO peptides (Vbeta4.1) and distinct from those used by highly tumor-reactive CTLs isolated from patients with spontaneous immune responses (Vbeta1.1, Vbeta8.1, and Vbeta13.1). Together, these results demonstrate that vaccination with the ESO protein elicits a repertoire of ESO 157-165-specific CTLs bearing T-cell receptors that are structurally distinct from those of CTLs found in spontaneous immune responses to the antigen and that are heterogeneous in terms of tumor reactivity, being often poorly tumor reactive.

  20. Política de Desenvolvimento Territorial Rural: um estudo comparativo entre o Distrito 165-Huamantla - Tlaxcala, México e o Território da Cidadania Paraná Centro – Paraná, BrasilPolítica de Desarrollo Territorial Rural: un estudio comparativo entre el Distrito 165-Huamantla (Tlaxcala, México) y el Territorio de la Ciudadanía Paraná Centro - Paraná, Brasil

    OpenAIRE

    Favaro, Jorge Luiz; Pérez Sánchez, Alfonso; Montenegro Gómez, Jorge

    2016-01-01

    O objetivo desse artigo é analisar de forma comparativa a materialização da Política de Desenvolvimento Territorial Rural (DTR) tendo como base dois países: Brasil e o México. Os recortes escolhidos para o estudo são: Território da Cidadania Paraná Centro do Brasil e no México é o Distrito 165 de Huamantla, do Estado de Tlaxcala. A investigação fundamenta-se nos princípios teóricos da metodologia de pesquisa qualitativa. Os dados foram coletados a partir da combinação das técnicas: entrevista...

  1. Terapia gênica com fator de crescimento endotelial vascular 165 para pacientes com angina refratária: mobilização de células progenitoras endoteliais

    Directory of Open Access Journals (Sweden)

    Clarissa G. Rodrigues

    2013-08-01

    Full Text Available FUNDAMENTO: O fator de crescimento endotelial vascular (VEGF - vascular endothelial growth factor induz a mobilização de células progenitoras endoteliais (CPEs com capacidade de proliferação e diferenciação em células endoteliais, contribuindo, dessa forma, para o processo angiogênico. OBJETIVO: Buscamos avaliar o comportamento de CPEs em pacientes com doença cardíaca isquêmica e angina refratária que receberam injeções intramiocardicas de 2000 µg de VEGF165 como terapia única. MÉTODOS: O estudo foi uma subanálise de um ensaio clínico. Pacientes com doença cardíaca isquêmica avançada e angina refratária foram avaliados para inclusão no estudo. Os critérios de inclusão foram: sinais e sintomas de angina e/ou insuficiência cardíaca apesar de tratamento medicamentoso máximo e área de isquemia miocárdica de, no mínimo, 5% conforme avaliado por uma tomografia computadorizada por emissão de fóton único (TCEFU. Os critérios de exclusão foram: idade > 65 anos, fração de ejeção do ventrículo esquerdo < 25% e cancer diagnosticado. Os pacientes cujos níveis de CPE foram avaliados foram incluídos. A intervenção consistiu na administração de 2000 µg de VEGF 165 de plasmídeo injetado no miocárdio isquêmico. A frequência de células CD34+/KDR+ foi analisada por citometria de fluxo antes e 3, 9, e 27 dias após a intervenção. RESULTADOS: Um total de 9 pacientes foram incluídos, 8 homens, média de idade de 59,4 anos, fração de ejeção ventricular esquerda de 59,3%, e classe de angina predominante III. Observou-se um aumento significativo dos níveis de CPEs no terceiro dia após a intervenção. Todavia, 9 e 27 dias após a intervenção, os níveis de CPEs foram similares aos basais. CONCLUSÃO: Identificamos uma mobilização transitória de CPE, com pico no terceiro dia após a intervenção com VEGF 165 em pacientes com angina refratária. Todavia, os níveis de CPEs apresentaram-se semelhantes

  2. {open_quotes}Pre-residue{close_quotes} light charged particles from {sup 28}Si+{sup 165}Ho and {sup 16}O+{sup 197}Au, {sup 208}Pb fusion

    Energy Technology Data Exchange (ETDEWEB)

    Fineman, B.J.; Brinkmann, K.T.; Caraley, A.L.; Gan, N.; McGrath, R.L.; Velkovska, J.

    1993-10-01

    Proton and alpha particle spectral shapes and multiplicities have been measured in coincidence with evaporation residues from {sup 28}Si+{sup 165}Ho and {sup 16}O + {sup 197}Au, {sup 208}Pb fusion reactions. Our experiments used 145 to 220 MeV {sup 28}Si and 115 and 140 MeV {sup 16}O beams produced with the Stony Brook LINAC. ER`s were separated using an electrostatic deflector and detected with large area surface barrier detectors. Light charged particles were detected at forward and backward angles with fourteen single NaI detectors. In the context of the statistical model, charged particle spectra yield information about emission barriers and compound nucleus equilibrium level densities. These are significant ingredients in calculations determining fission timescales from other observables such as pre-scission neutron multiplicities or fusion-evaporation excitation functions. Results will also be compared to analyses of pre-scission charged particles from similar systems which required barrier reductions to describe measured spectra.

  3. Experimental test of a newly developed single-moderator, multi-detector, directional neutron spectrometer in reference monochromatic fields from 144 keV to 16.5 MeV

    Energy Technology Data Exchange (ETDEWEB)

    Bedogni, R., E-mail: roberto.bedogni@lnf.infn.it [INFN – LNF, via E. Fermi n. 40, 00044 Frascati (Roma) (Italy); Gómez-Ros, J.M. [INFN – LNF, via E. Fermi n. 40, 00044 Frascati (Roma) (Italy); CIEMAT, Av. Complutense 40, 28040 Madrid (Spain); Pola, A.; Bortot, D. [Politecnico di Milano, Dipartimento di Energia, via La Masa 34, 20156 Milano (Italy); INFN – Milano, Via Celoria 16, 20133 Milano (Italy); Gentile, A. [INFN – LNF, via E. Fermi n. 40, 00044 Frascati (Roma) (Italy); Introini, M.V. [Politecnico di Milano, Dipartimento di Energia, via La Masa 34, 20156 Milano (Italy); INFN – Milano, Via Celoria 16, 20133 Milano (Italy); Buonomo, B. [INFN – LNF, via E. Fermi n. 40, 00044 Frascati (Roma) (Italy); Lorenzoli, M. [Politecnico di Milano, Dipartimento di Energia, via La Masa 34, 20156 Milano (Italy); INFN – Milano, Via Celoria 16, 20133 Milano (Italy); Mazzitelli, M. [INFN – LNF, via E. Fermi n. 40, 00044 Frascati (Roma) (Italy); Sacco, D. [INFN – LNF, via E. Fermi n. 40, 00044 Frascati (Roma) (Italy); INAIL – DPIA, Via di Fontana Candida n.1, 00040 Monteporzio Catone (Italy)

    2015-05-11

    A new directional neutron spectrometer called CYSP (CYlindrical SPectrometer) was developed within the NESCOFI@BTF (2011–2013) collaboration. The device, composed by seven active thermal neutron detectors located along the axis of a cylindrical moderator, was designed to simultaneously respond from the thermal domain up to hundreds of MeV neutrons. The new spectrometer condenses the performance of the Bonner Sphere Spectrometer in a single moderator; thus requiring only one exposure to determine the whole spectrum. The CYSP response matrix, determined with MCNP, has been experimentally evaluated with monochromatic reference neutron fields from 144 keV to 16.5 MeV, plus a {sup 252}Cf source, available at NPL (Teddington, UK). The results of the experiment confirmed the correctness of the response matrix within an overall uncertainty of ±2.5%. The new active spectrometer CYSP offers an innovative option for real-time monitoring of directional neutron fields as those produced in neutron beam-lines.

  4. Fabry-Perot Observations of a Secondary Peak at 20-21 Local Time in the Nocturnal Thermospheric Temperature Variation at Arequipa, Peru (16.5S, 71.5 W)

    Science.gov (United States)

    Meriwether, J. W.; Faivre, M.; Akmaev, R.; Fuller-Rowell, T.; Wu, F.

    2009-05-01

    Fabry-Perot observations of the nighttime thermospheric temperature variation in the equatorial region at Arequipa, Peru (16.5 S, 71.5 W) have generally reported the detection of a midnight temperature maximum (MTM). Examination of Arequipa temperature observations for the period of 1997 to 2001 as compared with the NRL MSIS-00 empirical model also reveals the occasional appearance of a secondary temperature peak with an amplitude of 15 to 25 K in contrast to the MTM amplitude of typically 75 to 150 K. This feature is seen near 20-21 LT for perhaps 15 to 25% of the ~400 nights of winter and equinoctial observations between 1997 and 2001. There was no strong solar cycle phase dependence noted for these results. Detection was possible only when the Fabry-Perot observations in all directions were averaged to decrease the measurement error from a typical value of 40-50 K to 15-20 K. Modelling using the Whole Atmosphere Model demonstrates the detection of a similar peak near 20-21 LT in the nighttime thermal variation. The development of this peak occurs as the result of the thermal forcing by the tidal waves propagating upward from the lower thermosphere for which the multiple tidal harmonics interact with the diurnal variation of the thermospheric ion drag to produce the MTM and also sporadically, this secondary temperature peak.

  5. Transport Barkhausen-like noise in uniaxially pressed Bi{sub 1.65}Pb{sub 0.35}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta}}ceramic samples

    Energy Technology Data Exchange (ETDEWEB)

    Garcia-Fornaris, I. [Departamento de Ciencias Basicas, Universidad de Granma, Apdo. 21, P.O. Box 85100, Bayamo (Cuba); Govea-Alcaide, E. [Departamento de Fisica, Universidad de Oriente, Patricio Lumumba s/n, P.O. Box 90500, Santiago de Cuba (Cuba); Instituto de Fisica, Universidade de Sao Paulo, CP 66318, 05315-970 Sao Paulo, SP (Brazil); Alberteris-Campos, M. [Departamento de Engenharia Mecanica, Escola Politecnica, Universidade de Sao Paulo, 05508-900 Sao Paulo, SP (Brazil); Mune, P. [Departamento de Fisica, Universidad de Oriente, Patricio Lumumba s/n, P.O. Box 90500, Santiago de Cuba (Cuba); Jardim, R.F., E-mail: rjardim@if.usp.b [Instituto de Fisica, Universidade de Sao Paulo, CP 66318, 05315-970 Sao Paulo, SP (Brazil)

    2010-08-01

    We report on the detection of the transport Barkhausen-like noise (TBN) in polycrystalline samples of Bi{sub 1.65}Pb{sub 0.35}Sr{sub 2}Ca{sub 2} Cu{sub 3}O{sub 10+{delta}}(Bi-2223) which were subjected to different uniaxial compacting pressures. The transport Barkhausen-like noise was measured when the sample was subjected to an ac triangular-shape magnetic field (f {approx} 1 Hz) with maximum amplitude B{sub max} {approx} 5.5 mT, in order to avoid the flux penetration within the superconducting grains. Analysis of the TBN signal, measured for several values of excitation current density, indicated that the applied magnetic field in which the noise signal first appears, B{sub a}(t{sub i}), is closely related to the magnetic-flux pinning capability of the material. The combined results are consistent with the existence of three different superconducting levels within the samples: (i) the superconducting grains; (ii) the superconducting clusters; and (iii) the weak-links. We finally argue that TBN measurements constitute a powerful tool for probing features of the intergranular transport properties in polycrystalline samples of high-T{sub c} superconductors.

  6. Characterizing the atomic mass surface beyond the proton drip line via a-decay measurements of the s1/2 ground state of 165Re and the h11/2 isomer in 161Ta

    CERN Document Server

    O'Donnell, D; Scholey, C; Bianco, L; Capponi, L; Carroll, R J; Darby, I G; Donosa, L; Drummond, M; Ertugral, F; Greenlees, P T; Grahn, T; Hauschild, K; Herzan, A; Jakobsson, U; Jones, P; Joss, D T; Julin, R; Juutinen, S; Ketelhut, S; Labiche, M; Leino, M; Lopez-Martens, A; Mullholland, K; Nieminen, P; Peura, P; Rahkila, P; Rinta-Antila, S; Ruotsalainen, P; Sandzelius, M; Saren, J; Saygi, B; Simpson, J; Sorri, J; Thornthwaite, A; Uusitalo, J; 10.1103/PhysRevC.86.064315

    2012-01-01

    The a-decay chains originating from the s1/2 and h11/2 states in 173Au have been investigated following fusion-evaporation reactions. Four generations of a radioactivities have been correlated with 173Aum leading to a measurement of the a decay of 161Tam. It has been found that the known a decay of 161Ta, which was previously associated with the decay of the ground state, is in fact the decay of an isomeric state. This work also reports on the first observation of prompt g rays feeding the ground state of 173Au. This prompt radiation was used to aid the study of the a-decay chain originating from the s1/2 state in 173Au. Three generations of a decays have been correlated with this state leading to the observation of a previously unreported activity which is assigned as the decay of 165Reg. This work also reports the excitation energy of an a-decaying isomer in 161Ta and the Q-value of the decay of 161Tag.

  7. Evidence on climatic variability and prehistoric human activities between 165 B.C. and A.D. 1400 derived from subfossil Scots pines (Pinus sylvestris L. found in a lake in Utsjoki, northernmost Finland

    Directory of Open Access Journals (Sweden)

    Zetterberg, P.

    1994-12-01

    Full Text Available Samples from 1265 subfossil pines have been collected from small lakes and peat deposits in the forest-limit zone of northern Fennoscandia in order to study past variations of climate. Many of the subfossils have been dated by dendrochronology and the chronology constructed from the measured ring-width data extends as a continuous master curve from the present back until 165 B.C. and after a short gap until about 7000 years before the present time. This material has greatly increased the number of dated pine megafossils in northern Finland which had previously been restricted only to radiocarbon-dated samples. In addition to the year-by-year information provided by tree-ring width data, the temporal distribution of pine megafossils found in the vicinity of the forest-limit zone also provides information on past climatic changes. The 102 pine subfossils collected from Lake Ailigas, in Utsjoki, form part of the above material. They provide information about past variations in pine growth caused, to a large degree, by changing climate at this one site, but they also give glimpses of the local activities of Prehistoric Man. The data from 90 of these trees have been successfully dated using dendrochronological techniques and the results show that all of them grew during the time period beginning 3000 years before present, and that 79 pines lived during the time span 165 B.C. to A.D. 1952. In several lakes in the forest-limit zone, some subfossil trees are much older than those in Lake Ailigas. The relatively young ages of the subfossils at this site indicates that the lake has been in existence probably only during the past 3000 years, forming when climate turned more humid than in earlier times. The present continuous master curve is about 600 years longer than the earlier published pine chronology for northern Sweden, though this has recently been extended to A.D. 1. In the present study, the life spans of individual dated pines are considered in

  8. 21 CFR 173.165 - Candida lipolytica.

    Science.gov (United States)

    2010-04-01

    ... may be safely used as the organism for fermentation production of citric acid in accordance with the... intended for use as a pure culture in the fermentation process for the production of citric acid from..., treatment with an absorbent (e.g., activated carbon) followed by filtration of the absorbent or...

  9. 40 CFR 165.3 - Definitions.

    Science.gov (United States)

    2010-07-01

    ... stationary pesticide container or to any refillable container, including but not limited to, hoses, fittings... stationary items which are located on a single site or on contiguous or adjacent sites and which are owned or.... One-way valve means a valve that is designed and constructed to allow virtually unrestricted flow...

  10. 40 CFR 51.165 - Permit requirements.

    Science.gov (United States)

    2010-07-01

    ... device secondary voltages and electric currents) and other information (for example, gas flow rate, O2 or... currents) and other information (for example, gas flow rate, O2 or CO2 concentrations), and to record... pit to the stack, including conveyors, combustion devices, heat exchangers and steam generators...

  11. 27 CFR 9.165 - Applegate Valley.

    Science.gov (United States)

    2010-04-01

    ... easterly to the peak of Roundtop Mountain (4693 feet); (4) Then in a straight line easterly and southerly... until it joins the northern boundary of the Rogue River National Forest; (7) Then easterly along the...) Then in a straight line northerly and easterly to Grants Pass Peak; (15) Then in a straight...

  12. 7 CFR 800.165 - Corrected certificates.

    Science.gov (United States)

    2010-01-01

    ... this process shall be corrected according to this section. (b) Who may correct. Only official personnel.... According to this section and the instructions, corrected certificates shall show (i) the terms “Corrected... that has been superseded by another certificate or on the basis of a subsequent analysis for...

  13. 20 CFR 655.165 - Partial certification.

    Science.gov (United States)

    2010-04-01

    ... EMPLOYMENT OF FOREIGN WORKERS IN THE UNITED STATES Labor Certification Process for Temporary Agricultural... request an expedited administrative review, or a de novo administrative hearing before an ALJ, of the... delivery a written request to the Chief ALJ of DOL (giving the address) and simultaneously serve a copy on...

  14. QTL Information Table: 165 [Q-TARO

    Lifescience Database Archive (English)

    Full Text Available sk1(t) Morphological trait Seed slender kernel RFLP B)Fine F2 Taichung 65 Oryza glu...maepatula (IRGC 105668)introgression line C679 C560 rgn Sobrizal, and Yoshimura, A. (2002). Mapping of genes for slender kernel

  15. Ngugi phenotypic 165-173.pmd

    African Journals Online (AJOL)

    Prof. Adipala Ekwamu

    the other creals such as maize and wheat, and is well adapted to ..... Genotype x Environmental interaction of the two sites for the 148 sorghum accessions collected from sorghum growing areas .... Ethiopia. PhD Thesis, School of Land, Crop.

  16. 32 CFR 165.6 - Procedures.

    Science.gov (United States)

    2010-07-01

    ... reimbursed shall be a pro rata recovery of nonrecurring cost for the applicable major defense equipment... nonrecurring production costs, a pro rata share of those costs may be paid by the subsequent purchaser and... rata share may be a unit charge determined by the DoD Component as a result of distribution of...

  17. Environmental Radiation Data (ERD) Journal Report 165

    Science.gov (United States)

    RadNet environmental radiation monitoring data report for the period of January - March 2015. The report includes results for air, drinking water and precipitation samples collected as part of EPA's RadNet monitoring program.

  18. 33 CFR 165.3 - Definitions.

    Science.gov (United States)

    2010-07-01

    .... (2) Merchant mariner's license. (3) STCW endorsement. (4) Certificate of registry. (5) Merchant... of registry enumerated in 46 U.S.C. subtitle II part E as well as the STCW endorsement into a...

  19. a Reexamination of the Red Band of CuO: Analysis of the [16.5] ^{2}Σ^{-} - X ^{2}Π_{i} Transition of ^{63}CuO and ^{65}CuO

    Science.gov (United States)

    Harms, Jack C.; Grames, Ethan M.; Yun, Sirkhoo; Ahmed, Bushra; O'Brien, Leah C.; O'Brien, James J.

    2017-06-01

    The red band of CuO has been observed at high resolution using Intracavity Laser Spectroscopy (ILS). The red band was rotationally analyzed in 1974 by Appelblad and Lagerqvist and a portion of the band structure was assigned as the spectrum of the [16.5] A ^{2}Σ^{+} - X ^{2}Π_{i} transition. Subsequent analyses of CuO showed that the character of the A state was ^{2}Σ^{-} in character, and thus the Λ-doubling parameter, p, was inverted, and the e/f parity assignments were reversed. In this study, the spectrum of CuO was recorded in the in the regions 16,150 \\wn - 16,270 \\wn and 16,405 \\wn - 16,545 \\wn. The CuO molecules were produced in the plasma discharge of a copper hollow cathode within the cavity of a tunable dye laser, using 0.6 torr of argon as the sputter gas and a trace amount of O_2 as the source of oxygen. The plasma spectra were recorded intermittently with spectra from an external I_2 cell, and line positions from the widely used Iodine Atlas were used for calibration. In uncongested regions of the spectrum, both ^{63}CuO and ^{65}CuO were observed with appreciable intensity. The resulting spectra were rotationally analyzed for both isotopologues, fitting the data as a ^{2}Σ^{-} - ^{2}Π_{i} transition using PGOPHER. Line positions from the millimeter wave and FTIR studies of ^{63}CuO performed in the late 1990s were included in the fit to overcome potential complications due to the ambiguous parity assignments prevalent in the CuO literature. Previously unreported molecular constants were obtained from the fit for ^{65}CuO, and the constants of ^{63}CuO are determined to at least an order of magnitude greater than the results of Appelblad and Lagerqvist. Results of this analysis will be presented.

  20. Comment on ''Fabrication methods for low-Pt-loading electrocatalysts in proton exchange membrane fuel cell systems'' [J.-H. Wee, K.-Y. Lee, S.H. Kim, J. Power Sources 165 (2007) 667-677

    Energy Technology Data Exchange (ETDEWEB)

    Gruber, D. [Department of Micro Systems Technology, Hamburg University of Technology, D-21071 Hamburg (Germany)

    2007-11-08

    Glow discharge sputter deposition of metals like Pt or other materials is around for decades. One of the many advantages of this process is - certain prerequisites given - the good adhesion of the sputtered layers due to the physical assisted deposition. Sputter deposition is attributed poor adherence by Wee et al. [Jung-Ho Wee, Kwan-Young Lee, Sung Hyun Kim, J. Power Sources 165 (2007) 667-677], which asks for some comments. (author)

  1. The Complex Constructed by hVEGF165 Genes Transfected BMSCs and Collagen Membrane (BME-10X) Enhanced Osteogenesis and Angiogenesis%hV EGF基因修饰的 SD大鼠BM SCs与胶原膜BME-10X复合物的成骨能力研究

    Institute of Scientific and Technical Information of China (English)

    江燕; 朱小峰; 闫福华

    2016-01-01

    Objective To investigate the possibility of forming new bones in rats by incorporating the hVEGF165 transfected BMSCs with collagen membrane (BME‐10X) to form a tissue‐engineered cell and matrix complex ,and transplanting it into Sprague Dawley rats . Methods The hVEGF165 transfected BMSCs were cultured in BME‐10X collagen matrix for 3 days . Histological examination was performed with light microscopy and H‐E staining . Cell attachment was analyzed by fluorescence microscope ,con‐focal laser scanning microscope ,and scanning electron microscope . T he gene‐modified tissue‐engineered complex ,which was constructed by transfected BMSCs and BME‐10X ,was implanted into subcutaneous sites in nude mice . After 4 and 8 weeks ,the animals were sacrificed and the tissue‐engineered complex was evaluated by histology . Results When the transfected cells were seeded in BME‐10X ,it was noted that cell adhered and stretched well after 24 h of culture . Investigation under tomographic scanning with confocal laser scanning confocal microscope showed that cell and material integrated well . The study in vivo showed that when BMSCs were transplanted in the subcutaneous sites of nude mice ,the transfected BMSC complex formed more contents of ossification and angiogenesis than those in the un‐transfected group . Conclusion In this study the BME‐10X showed a good biocompatibility with hVEGF165 transfect‐ed BMSCs . BMSCs transfected with VEGF165 gene showed enhanced osteogenesis and angiogenesis both in v itro and in v ivo .%目的:观察人血管内皮生长因子(hVEGF165)基因的骨髓基质细胞(BMSCs)与胶原膜BME‐10X复合的相容性及该复合物移植在体内的成骨情况,为其能否修复牙周骨质缺损提供依据。方法在体外将hVEGF165基因转染的SD大鼠BM SCs种植于胶原膜BM E‐10X复合膜上,使用激光共聚焦扫描显微镜、荧光显微镜、扫描电镜及组织学方法进行观察,并将该

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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%.

  9. 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...

  10. 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...

  11. 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.

  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. Comparative hydrological study of two Martian paleolakes (9°34'00"S-167°11'00"W and 10°12'00"S-165°38'00"W) located in Mars Memnonia quadrangle

    Science.gov (United States)

    Pajola, Maurizio; Baratti, Emanuele; Coradini, Marcello; Mangili, Clara; Pieri, David; McBride, Karen; Montanari, Alberto; Moscariello, Andrea

    2014-05-01

    In this work we present the hydrological reconstruction of two Martian paleolakes located in the Memnonia quadrangle between 164°0'0"W and 169°0'0"W longitude and between 7°0'0"S and 12°0'0"S latitude. Both paleolakes formed in ancient craters excavated in Noachian terrains: the crater rims of both lakes are cut by tributaries and outlets, which are interconnected through a wide riverbed network. The first paleolake is located inside a crater centered at 9°34'00"S latitude and 167°11'00"W longitude, and whose radius ranges between 9.6 and 11.4 km while the elevation spans between -486 and -1803 m. After creating a bathymetric map, we measured the ancient water level, WL, of the paleolake, i.e. -1409 m, taking into account the outlet's elevation. The paleolake area A0 at the WL, was 164.7 km2 with a total water volume VW of 10.9 km3. The paleolake floor mean elevation is at -1480.4 m, giving a water mean depth of 71 m. By following Garvin et al [2003] law presented by Schon et al., [2012], we derived a sediment thickness range between 850 and 990 m. The second paleolake is inside a crater at 10°12'00"S latitude and 165°38'00"W longitude. It is larger than the first one, with a radius that spans between 41.31 and 49.70 km and whose elevation ranges between -330 and -2179 m. The ancient water level, WL, of the paleolake is at -1420 m, giving an area A0 of 4734.6 km2 measured at the WL, and a total water volume VW of 1264.7 km3. The paleolake floor mean elevation is at -1695.7 m, giving a water mean depth of 276 m and a predicted sediment thickness range filling the crater floor between 2190 and 2490 m. The thickness of the sediments is comparable to sediment thickness of terrestrial crater lakes; if the sediments are all of lacustrine origin, then climatic conditions that allowed water to stay in liquid form on the planet surface may have lasted for hundredth of thousands to million of years. A comparison between the two paleolakes indicates that the first one

  20. Novel spiropiperidine-based stearoyl-CoA desaturase-1 inhibitors: Identification of 1'-{6-[5-(pyridin-3-ylmethyl)-1,3,4-oxadiazol-2-yl]pyridazin-3-yl}-5-(trifluoromethyl)-3,4-dihydrospiro[chromene-2,4'-piperidine].

    Science.gov (United States)

    Uto, Yoshikazu; Kiyotsuka, Yohei; Ueno, Yuko; Miyazawa, Yuriko; Kurata, Hitoshi; Ogata, Tsuneaki; Deguchi, Tsuneo; Yamada, Makiko; Watanabe, Nobuaki; Konishi, Masahiro; Kurikawa, Nobuya; Takagi, Toshiyuki; Wakimoto, Satoko; Kono, Keita; Ohsumi, Jun

    2010-01-15

    Cyclization of the benzoylpiperidine in lead compound 2 generated a series of novel and highly potent spiropiperidine-based stearoyl-CoA desaturase (SCD)-1 inhibitors. Among them, 1'-{6-[5-(pyridin-3-ylmethyl)-1,3,4-oxadiazol-2-yl]pyridazin-3-yl}-5-(trifluoromethyl)-3,4-dihydrospiro[chromene-2,4'-piperidine] (19) demonstrated the most powerful inhibitory activity against SCD-1, not only in vitro but also in vivo (C57BL/6J mice). With regard to the pharmacological evaluation, 19 showed powerful reduction of the desaturation index in the plasma of C57BL/6J mice on a non-fat diet after a 7-day oral administration (q.d.) without causing notable abnormalities in the eyes or skin up to the highest dose (3mg/kg) in our preliminary analysis. Copyright 2009 Elsevier Ltd. All rights reserved.

  1. Avaliação de impacto da escala econômica na dimensão ambiental das empresas do ISE da BM & FBOVESPA conforme parâmetros da Política Nacional do Meio Ambiente (Lei nº 10.165

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Di Agustini

    2015-03-01

    Full Text Available Bolsa de valores é o espaço em que as empresas podem obter capital estimulando a atividade empreendedora. Os investidores ambientalmente responsáveis buscam investir em ações de empresas sustentáveis, até porque são mais rentáveis. Atendendo a essa demanda, foi criado no Brasil em 2005 o Índice de Sustentabilidade Empresarial (ISE - iniciativa pioneira na América Latina e quarto indicador do tipo no mundo -, compara o desempenho das empresas listadas na Bolsa de Valores, Mercadorias e Futuros (BM & FBOVESPA sob os aspectos de um conceito de sustentabilidade. É um índice de ações referencial para os investimentos socialmente responsáveis, composto por empresas que se destacam em sustentabilidade a longo prazo. A finalidade desse índice é criar um ambiente de investimento compatível com as demandas de desenvolvimento sustentável da sociedade e estimular práticas mais sustentáveis nas empresas. Investimentos em empresas sustentáveis geram valor para o acionista, pois estão mais preparadas para enfrentar riscos econômicos, sociais e ambientais. Integrar o ISE é como ter um selo de qualidade reconhecido pelo mercado como empresa que atua com sustentabilidade. Para as 40 empresas integrantes do ISE em 2013, segundo parâmetros da Política Nacional do Meio Ambiente (Lei nº 10.165, classifica-se a interferência da empresa no território pelo potencial de poluição e utilização de recursos naturais. Entretanto, a Lei nº 10.165 não contempla o impacto da escala econômica na classificação de potencial de poluição e utilização de recursos naturais pelas empresas. Ao considerar o impacto da escala econômica das empresas integrantes do ISE em 2013, amplia-se a classificação original da Lei nº 10.165, possibilitando que os stakeholders mensurem a interferência dessas empresas na biosfera. SABESP, CPFL ENERGIA, TELEFONICA BRASIL (Vivo, CEMIG, OI, BRF FOODS (Sadia, Perdigão, Batavo e Elegê, ELETROBRAS, BRASKEN

  2. Studies on polymorphic sequence during the formation of the 1:1 ordered perovskite-type BaCa(0.335)M(0.165)Nb(0.5)O(3-δ) (M = Mn, Fe, Co) using in situ and ex situ powder X-ray diffraction.

    Science.gov (United States)

    Kan, Wang Hay; Lussier, Joey; Bieringer, Mario; Thangadurai, Venkataraman

    2014-10-06

    Here, we report a synthetic strategy to control the B-site ordering of the transition metal-doped perovskite-type oxides with the nominal formula of BaCa(0.335)M(0.165)Nb(0.5)O(3-δ) (M = Mn, Fe, Co). Variable temperature (in situ) and ex situ powder X-ray diffraction (PXRD), selected area electron diffraction (SAED), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), scanning/transmission electron microscopy (SEM/TEM), and thermogravimetic analysis (TGA) were used to understand the B-site ordering as a function of temperature. The present study shows that BaCa(0.335)M(0.165)Nb(0.5)O(3-δ) crystallizes in the B-site disordered primitive perovskite (space group s.g. Pm3̅m) at 900 °C in air, which can be converted into the B-site 1:2 ordered perovskite (s.g. P3̅m1) at 1200 °C and the B-site 1:1 ordered perovskite phase (s.g. Fm3̅m) at 1300 °C. However, the reverse reaction is not feasible when the temperature is reduced. FTIR revealed that no carbonate species were present in all three polymorphs. The chemical stability of the investigated perovskites in CO2 and H2 highly depends on the B-site cation ordering. For example, TGA confirmed that the B-site disordered primitive perovskite phase is more readily reduced in dry and wet 10% H2/90% N2 and is less stable in pure CO2 at elevated temperature, compared to the B-site 1:1 ordered perovskite-type phase of the same nominal composition.

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

    Institute of Scientific and Technical Information of China (English)

    GUO Pingyi; ZENG Chaoliu; SHAO Yong; QIN Zeshang

    2012-01-01

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

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

    Directory of Open Access Journals (Sweden)

    Khalaf A. M.

    2014-01-01

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

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

    Science.gov (United States)

    2015-01-01

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

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

    Indian Academy of Sciences (India)

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

    2015-02-01

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

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

    Institute of Scientific and Technical Information of China (English)

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

    2005-01-01

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

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

    Science.gov (United States)

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

    2016-04-01

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

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

    Science.gov (United States)

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

    2013-09-11

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

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

    Science.gov (United States)

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

    2015-07-06

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

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

    Science.gov (United States)

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

    2016-01-04

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

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

    KAUST Repository

    Zhang, Shuxia

    2012-07-01

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

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

    Science.gov (United States)

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

    2011-12-01

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

  14. 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

  15. Radioisotopic synovectomy using ferric hydroxide macroaggregated for chronic arthritis treatment; Sinovectomia radioisotopica atraves do macroagregado de hidroxido ferrico para tratamento da artrite cronica

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Carla Flavia; Campos, Tarcisio P.R. [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Dept. de Ciencias e Tecnicas Nucleares] E-mail: campos@nuclear.ufmg.br

    2002-07-01

    Synovectomy radioisotopic is an arthritis treatment used in specific clinical conditions whose main goal is to sterilized the synovia. This treatment has specific and precise indications and it is considered to have an adequate response. The present work presents a modeling of an articulation (joint) based on its real geometric anatomy and chemical constitution. The internal dosimetry is evaluated by the Monte Carlo Code. The majority of the radionuclides were considered in the simulations. The syntheses of the ferric hydroxide macroaggregates with dysprosium and samarium have been prepared (Dy{sup 165}-MHF and Sm{sup 153}-MHF). Obtaining the cintilographic images of rabbits in which Dy{sup 165}-MHF is injected is in progress. Biodistribution studies in addition with the internal dosimetry will certify the dose in the membrane of the synovia. (author)

  16. 40 CFR 165.43 - Scope of pesticide products included.

    Science.gov (United States)

    2010-07-01

    ... 408 of the Federal Food, Drug, and Cosmetic Act or a food additive regulation under section 409 of... one of the following antimicrobial product use categories: food handling/storage establishments... effect on the environment according to the provisions of paragraph (e) of this section. (d)...

  17. 40 CFR 165.63 - Scope of pesticide products included.

    Science.gov (United States)

    2010-07-01

    ... a tolerance under section 408 of the Federal Food, Drug, and Cosmetic Act or a food additive... use on a site in at least one of the following antimicrobial product use categories: food handling... unreasonable adverse effect on the environment according to the provisions of paragraph (e) of this section....

  18. 40 CFR 165.23 - Scope of pesticide products included.

    Science.gov (United States)

    2010-07-01

    ... a tolerance under section 408 of the Federal Food, Drug, and Cosmetic Act or a food additive... use on a site in at least one of the following antimicrobial product use categories: food handling... unreasonable adverse effect on the environment according to the provisions of paragraph (d) of this section....

  19. 26 CFR 1.165-9 - Sale of residential property.

    Science.gov (United States)

    2010-04-01

    ... basis other than depreciation, which is computed on the straight-line method. The loss to be taken into... depreciation, which is computed on the straight-line method. The loss to be taken into account for purposes of... for depreciation in the case of such property, see § 1.167(g)-1. For limitations on the loss from...

  20. Dicty_cDB: SHB165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 231 from Patent WO0168911. 40 0.015 2 BD460434 |BD460434.1 Diagnosis of Diseases Associated with Cell Cycle.... 40 0.015 2 BD452356 |BD452356.1 Diagnosis of Diseases Associated with Cell Cycle

  1. 7 CFR 457.165 - Millet crop insurance provisions.

    Science.gov (United States)

    2010-01-01

    ... with a 50-pound test weight adjusted to zero percent foreign material content basis offered by buyers... measures; (e) Wildlife; (f) Earthquake; (g) Volcanic eruption; or (h) Failure of the irrigation water supply due to a cause of loss specified in sections 8(a) through (g) that also occurs during the...

  2. 21 CFR 133.165 - Parmesan and reggiano cheese.

    Science.gov (United States)

    2010-04-01

    ... the same physical and chemical properties as the cheese produced when the procedure set forth in... milk or added thereto. Sufficient rennet, or other safe and suitable milk-clotting enzyme that produces... larger than wheat kernels, heated, and stirred until the temperature reaches between 115 °F and 125...

  3. 40 CFR 159.165 - Toxicological and ecological studies.

    Science.gov (United States)

    2010-07-01

    ... of test organism. (v) By a different route of exposure. (2) Acute oral, acute dermal, acute...: (i) All testing has been completed. (ii) A preliminary data analysis or gross pathological analysis has been conducted. (iii) Final analysis has not been completed. (iv) A reasonable period for...

  4. Dicty_cDB: VSA165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available s) Value N BQ507669 |BQ507669.2 EST615084 Generation of a set of potato cDNA clones for microarray analyses ...ence. 32 0.070 3 BQ507668 |BQ507668.1 EST615083 Generation of a set of potato cDNA clones for microarray ana

  5. Dicty_cDB: SHL165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available wsarssmks**nmvrdwrvsliiivisitislds khwnvpifivsmvklssvhntc*cvsplv--- ---yvihsfiapmptasnksnpw*q*ml*tlhfqhlqssc...myhliklhqefhfyvkwnqn *iqi*liqlk*hkk*lveyfqv*rlqnwiiwqprqqhicqhviqimvfwqhvlvyrisin klqrvl*rqlrnnmnsliqraiywhh

  6. Dicty_cDB: AFO165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available C08 of library AX0AA from strain CBS 7064 of Pichia farinosa. 56 1e-05 2 AC074026 |AC074026.14 Staphylococcu... from strain CBS 7064 of Pichia farinosa. 48 6e-05 2 AL393468 |AL393468.1 T3 end of clone AR0AA011B08 of lib

  7. 47 CFR 80.165 - Operator requirements for voluntary stations.

    Science.gov (United States)

    2010-10-01

    ... telegraph T-2. Ship direct-printing telegraph MP. Ship telephone, with or without DSC, more than 250 watts carrier power or 1,000 watts peak envelope power G. Ship telephone, with or without DSC, not more than 250 watts carrier power or 1,000 watts peak envelope power MP. Ship telephone, with or without DSC, not...

  8. 165 Arab Spring: The Genesis, Effects and Lessons for the ...

    African Journals Online (AJOL)

    First Lady

    2013-01-28

    Jan 28, 2013 ... unemployment, poverty, lack of social service and all the malaise that ... economy characterized by massive infrastructure decay and high rate of pov- ... inflation, human rights violation, political authoritarianism, sit-tightism, ...

  9. Dicty_cDB: VSB165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available ete sequence. 287 e-156 4 CF423215 |CF423215.1 NcEST3d69b03.y1 Nc-LIV Tachyzoite cDNA Library Neospora...e. 40 3e-04 2 CF599090 |CF599090.1 NcEST3d98e07.y1 Nc-LIV Tachyzoite cDNA Library Neospora caninum cDNA 5' s...857264 |CA857264.1 NcEST3a47c04.y1 Nc-1 pZ Tachyzoite cDNA Library Neospora caninum cDNA 5' similar to TR:Q9...sequence. 36 0.016 2 CF260143 |CF260143.1 NcEST3c94e11.y2 Nc-LIV Tachyzoite cDNA Library Neospora...16 2 CF421933 |CF421933.1 NcEST3d70c04.y1 Nc-LIV Tachyzoite cDNA Library Neospora caninum cDNA 5' similar to

  10. 40 CFR 98.165 - Procedures for estimating missing data.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Procedures for estimating missing data... estimating missing data. A complete record of all measured parameters used in the GHG emissions calculations...., if a meter malfunctions during unit operation), a substitute data value for the missing...

  11. 21 CFR 189.165 - Nordihydroguaiaretic acid (NDGA).

    Science.gov (United States)

    2010-04-01

    ... “Official Methods of Analysis of the AOAC INTERNATIONAL,” 13th Ed. (1980), which is incorporated by reference. Copies may be obtained from the AOAC INTERNATIONAL, 481 North Frederick Ave., suite 500...

  12. Dicty_cDB: VHI165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available *nlifqel*lqiei*lnglqlnyicivildqnhqeih gvvhy*qfsqsfhqielfyhhqkvnlhvlsmqyy*lmkhqsml...EQQTQQ*lskkykq*kn*kn*nkiflnk ir Translated Amino Acid sequence (All Frames) Frame A: ---ivsqmlqk*lkimvqislvy

  13. 27 CFR 70.165 - Production of books.

    Science.gov (United States)

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2010-04-01 2010-04-01 false Production of books. 70... books. If a levy has been made or is about to be made on any property or rights to property, any person, having custody or control of any books or records containing evidence or statements relating to...

  14. 47 CFR 22.165 - Additional transmitters for existing systems.

    Science.gov (United States)

    2010-10-01

    ...-ground Radiotelephone Service. Ground stations may be added to Commercial Aviation air-ground systems at... the same channel. This section does not apply to Basic Exchange Telecommunications Radio Systems. (h... 47 Telecommunication 2 2010-10-01 2010-10-01 false Additional transmitters for existing...

  15. 26 CFR 1.165-7 - Casualty losses.

    Science.gov (United States)

    2010-04-01

    ... planted trees and ornamental shrubs on the grounds surrounding the building. In 1961 the land, building, trees, and shrubs are damaged by hurricane. At the time of the casualty the adjusted basis of the land is $18,000 and the adjusted basis of the building is $66,000. At that time the trees and shrubs...

  16. 7 CFR 993.165 - Disposition of reserve prunes.

    Science.gov (United States)

    2010-01-01

    ... recent 5 years, (4) diced prunes for use as an ingredient in, or the manufacture of, food products for human consumption, other than for use in the manufacture of prune juice, prune concentrate, baby food...

  17. Conjunctival tumors in children: histopathologic diagnosis in 165 cases

    Directory of Open Access Journals (Sweden)

    Martin A. Zimmermann-Paiz

    2015-12-01

    Full Text Available ABSTRACT Purpose: Conjunctival tissue tumors have a varied presentation, and few series studies on pediatric patients have been published. The objective of this paper is to report the histopathologic diagnoses (spanning over 1988-2013 of conjunctival tumors in children younger than 14 years. Methods: We conducted a retrospective, descriptive, and observational study by reviewing the database of all children in whom a conjunctival tumor was surgically removed at Hospital de Ojos y Oídos "Dr. Rodolfo Robles V.," Benemérito Comité Pro Ciegos y Sordos de Guatemala. The data pertaining to gender, age, and histopathologic diagnosis of all cases was collected. The same ocular pathologist made all diagnoses. Results: One hundred sixty-five cases were found, with a mean age of 7.88 years, being 91 (55.15% male subjects. Melanocytic lesions were the most common tumors found (30.91% of cases, with only one case (0.60% being malignant. Conclusions: Melanocytic lesions were the most common tumors found, and of all the cases, only one was malignant; this was in a patient with xeroderma pigmentosum. These findings are consistent with those reported in other studies regarding the frequencies of the histopathology of conjunctival tumors in the pediatric population.

  18. Dicty_cDB: SFA165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available in CBS 379 of Saccharomyces exiguus. 84 4e-18 2 AL408145 |AL408145.1 T7 end of clone AV0AA006G11 of library ...AV0AA from strain CBS 379 of Saccharomyces exiguus. 84 6e-18 2 dna update 2003.12

  19. CHARACTERIZATION OF PRECURSOR 165 RRNA FOR AEROMONAS HYDROPHILA

    Science.gov (United States)

    Current strategies for monitoring drinking water quality involve culture-based methods to detect the presence of microbial indicators. However, these methods are insensitive when the organisms have undergone physiological changes such as injury and starvation that can occur in h...

  20. Vegetation - Anza-Borrego Desert State Park [ds165

    Data.gov (United States)

    California Department of Resources — The Anza Borrego Desert State Park (ABDSP) Vegetation Map depicts vegetation within the Park and its surrounding environment. The map was prepared by the Department...

  1. 50 CFR 216.165 - Requirements for monitoring and reporting.

    Science.gov (United States)

    2010-10-01

    ..., including the retention of marine mammals, may be conducted without a separate scientific research permit. The use of retained marine mammals for scientific research other than shoreside examination must be... Response Program. Necropsies will be performed and tissue samples taken from any dead animals....

  2. Dicty_cDB: SFD165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available KGYQIDDDGSLITVFSAPNYCDQSGNLGSFINITEDKIKITTLKLXTSEYTT KH*pkk Translated Amino Acid sequence (All Frames) Fram...NLSTI IRSHEVKEKGYQIDDDGSLITVFSAPNYCDQSGNLGSFINITEDKIKITTLKLXTSEYTT KH*pkk Homolog

  3. Dicty_cDB: VSH165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available ACTAAAAAAA sequence update 2001. 3.22 Translated Amino Acid sequence yinnesstilpiscstr...iwvllrktkpthtigkkfklse tqvpthmvmvttkfilsii*yrclfff*kk--- ---aplxlfxqxkkkgxyfff*kkkkixdiktiktikkn*k Frame B: yinnesstilpiscstr

  4. Dicty_cDB: CHI165 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available TKYVTIYFXLQLVKKLQFMIKILIIFXHHHHHHHHHHHHHHHQQ*ler nhtilnlk*rknlsqihqwikikkkskkkkkeqyqkeklyylviqdqnqqqhlhlhhhq...GGIGSKVVK--- ---KKTTSRITITKYVTIYFXLQLVKKLQFMIKILIIFXHHHHHHHHHHHHHHHQQ*ler nhtilnlk*rknlsqihqwikikkkskkkkkeqy

  5. Revascularização completa do miocárdio. Pontes seqüenciais de veia safena, anastomoses seqüenciais da artéria torácica interna e enxertos compostos: análise de 165 casos consecutivos

    Directory of Open Access Journals (Sweden)

    Raul Corrêa RABELO

    1997-04-01

    Full Text Available Buscando a revascularização completa do miocárdio, 165 casos foram analisados dentre 359 pacientes submetidos a cirurgia de revascularização do miocárdio, no período de janeiro de 1995 a janeiro de 1996, com pontes de veia safena e/ou artéria torácica interna, de forma seqüencial, ou associadas como enxertos compostos. Destes, 132 receberam pontes seqüenciais de veia safena servindo a 2 ou mais ramos arteriais coronários, 25 foram tratados através de anastomoses seqüenciais de artéria torácica interna, de forma simples, interessando aos ramos interventricular anterior e diagonais da coronária esquerda, enquanto 8 receberam enxertos compostos de artéria torácica interna direita e esquerda associados a segmentos de veias safenas, que terminavam em ramos das artérias coronárias direita e esquerda. Em 96% os casos a operação programada foi realizada, obtendo-se revascularização completa. Ocorreu um único (0,6% óbito hospitalar conseqüente a infarto do miocárdio transoperatório, seguido de síndrome de baixo débito cardíaco; a morbidade não diferiu daquela presente nos procedimentos usuais de revascularização cirúrgica do miocárdio. Os cuidados na dissecção e preparo dos pedículos da artéria torácica interna, bem como na retirada e preparo para implante das veias safenas, somados àqueles necessários à obtenção da perfeita anastomose seqüencial, de modo a evitar torções, angulações e acotovelamentos dos enxertos, são enfatizados como fundamentais para o excelente resultado obtido na série analisada. Nossos resultados entusiasmam o emprego da crescente freqüência no uso da técnica da revascularização completa do miocárdio.The authors analyse 165 patients out of 359 submitted to myocardial revascularization during the period between January 1995 and January 1996, in which the saphenous veins and the internal thoracic arteries have been used as a sequential graft, or associated with a composit

  6. Magnetic field, frequency and temperature dependence of complex conductance of ultrathin La1.65Sr0.45CuO4/La2CuO4 films and the organic superconductors κ-(BEDT-TTF)2Cu[N(CN)2]Br

    Science.gov (United States)

    Gasparov, V. A.; He, Xi; Dubuis, G.; Pavuna, D.; Kushch, N. D.; Yagubskii, E. B.; Schlueter, J. A.; Bozovic, I.

    2015-09-01

    We used atomic-layer molecular beam epitaxy (ALL-MBE) to synthesize bilayer films of a cuprate metal (La1.65Sr0.45CuO4, LSCO) and a cuprate insulator (La2CuO4, LCO), in which interface superconductivity occurs in a layer that is just one-half unit cell thick. We have studied the magnetic field and temperature dependence of the complex sheet conductance, σ(ω), of these films, and compared them to κ-(BEDT-TTF)2Cu[N(CN)2]Br single crystals. The magnetic field H was applied both parallel and perpendicular to the 2D conducting layers. Experiments have been carried out at frequencies between 23 kHz and 50 MHz using either two-coil mutual inductance technique, or the LC resonators with spiral or rectangular coils. The real and the imaginary parts of the mutual-inductance M(T,ω) between the coil and the sample were measured and converted to complex conductivity. For H perpendicular to the conducting layers, we observed almost identical behavior in both films and κ-Br single crystals: (i) the transition onset in the inductive response, Lk-1(T) occurs at a temperature lower by 2 K than in Reσ(T), (ii) this shift is almost constant with magnetic field up to 8 T; (iii) the vortex diffusion constant D(T) is exponential due to pinning of vortex cores. These results can be described by the extended dynamic theory of the Berezinski-Kosterlitz-Thouless (BKT) transition and dynamics of bound vortex-antivortex pairs with short separation lengths.

  7. Glass microspheres for medical applications

    Science.gov (United States)

    Conzone, Samuel David

    Radioactive dysprosium lithium borate glass microspheres have been developed as biodegradable radiation delivery vehicles for the radiation synovectomy treatment of rheumatoid arthritis. Once injected into a diseased joint, the microspheres deliver a potent dose of radiation to the diseased tissue, while a non-uniform chemical reaction converts the glass into an amorphous, porous, hydrated dysprosium phosphate reaction product. The non-radioactive, lithium-borate component is dissolved from the glass (up to 94% weight loss), while the radioactive 165Dy reacts with phosphate anions in the body fluids, and becomes "chemically" trapped in a solid, dysprosium phosphate reaction product that has the same size as the un-reacted glass microsphere. Ethylene diamine tetraacetate (EDTA) chelation therapy can be used to dissolve the dysprosium phosphate reaction product after the radiation delivery has subsided. The dysprosium phosphate reaction product, which formed in vivo in the joint of a Sprague-Dawley rat, was dissolved by EDTA chelation therapy in 100 Gy) of localized beta radiation to a treatment site within the body, followed by complete biodegradability. The non-uniform reaction process is a desirable characteristic for a biodegradable radiation delivery vehicle, but it is also a novel material synthesis technique that can convert a glass to a highly porous materials with widely varying chemical composition by simple, low-temperature, glass/solution reaction. The reaction product formed by nonuniform reaction occupies the same volume as the un-reacted glass, and after drying for 1 h at 300°C, has a specific surface area of ≈200 m2/g, a pore size of ≈30 nm, and a nominal crushing strength of ≈10 MPa. Finally, rhenium glass microspheres, composed of micron-sized, metallic rhenium particles dispersed within a magnesium alumino borate glass matrix were produced by sintering ReO2 powder and glass frit at 1050°C. A 50 mg injection of radioactive rhenium glass

  8. Isolation and Structural Characterization of a Mackay 55-Metal-Atom Two-Shell Icosahedron of Pseudo-Ih Symmetry, Pd55L12(μ3-CO)20 (L = PR3, R = Isopropyl): Comparative Analysis with Interior Two-Shell Icosahedral Geometries in Capped Three-Shell Pd145, Pt-Centered Four-Shell Pd-Pt M165, and Four-Shell Au133 Nanoclusters.

    Science.gov (United States)

    Erickson, Jeremiah D; Mednikov, Evgueni G; Ivanov, Sergei A; Dahl, Lawrence F

    2016-02-10

    We present the first successful isolation and crystallographic characterization of a Mackay 55-metal-atom two-shell icosahedron, Pd55L12(μ3-CO)20 (L = PPr(i)3) (1). Its two-shell icosahedron of pseudo-Ih symmetry (without isopropyl substituents) enables a structural/bonding comparison with interior 55-metal-atom two-shell icosahedral geometries observed within the multi-shell capped 145-metal-atom three-shell Pd145(CO)72(PEt3)30 and 165-metal-atom four-shell Pt-centered (μ12-Pt)Pd164-xPtx(CO)72(PPh3)20 (x ≈ 7) nanoclusters, and within the recently reported four-shell Au133(SC6H4-p-Bu(t))52 nanocluster. DFT calculations carried out on a Pd55(CO)20(PH3)12 model analogue, with triisopropyl phosphine substituents replaced by H atoms, revealed a positive +0.84 e charge for the entire Pd55 core, with a highly positive second-shell Pd42 surface of +1.93 e.

  9. 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.

  10. 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.

  11. 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).

  12. 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.

  13. 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

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. Nanosized (mu12-Pt)Pd164-xPtx(CO)72(PPh3)20 (x approximately 7) containing Pt-centered four-shell 165-atom Pd-Pt core with unprecedented intershell bridging carbonyl ligands: comparative analysis of icosahedral shell-growth patterns with geometrically related Pd145(CO)x(PEt3)30 (x approximately 60) containing capped three-shell Pd145 core.

    Science.gov (United States)

    Mednikov, Evgueni G; Jewell, Matthew C; Dahl, Lawrence F

    2007-09-19

    Presented herein are the preparation and crystallographic/microanalytical/magnetic/spectroscopic characterization of the Pt-centered four-shell 165-atom Pd-Pt cluster, (mu(12)-Pt)Pd(164-x)Pt(x)(CO)(72)(PPh(3))(20) (x approximately 7), 1, that replaces the geometrically related capped three-shell icosahedral Pd(145) cluster, Pd(145)(CO)(x)(PEt(3))(30) (x approximately 60), 2, as the largest crystallographically determined discrete transition metal cluster with direct metal-metal bonding. A detailed comparison of their shell-growth patterns gives rise to important stereochemical implications concerning completely unexpected structural dissimilarities as well as similarities and provides new insight concerning possible synthetic approaches for generation of multi-shell metal clusters. 1 was reproducibly prepared in small yields (Pd-Pt anatomy of 1 consists of: (a) shell 1 with the centered (mu(12)-Pt) atom encapsulated by the 12-atom icosahedral Pt(x)Pd(12-x) cage, x = 1.2(3); (b) shell 2 with the 42-atom nu(2) icosahedral Pt(x)Pd(42-x) cage, x = 3.5(5); (c) shell 3 with the anti-Mackay 60-atom semi-regular rhombicosidodecahedral Pt(x)Pd(60-x) cage, x = 2.2(6); (d) shell 4 with the 50-atom nu(2) pentagonal dodecahedral Pd(50) cage. The total number of crystallographically estimated Pt atoms, 8 +/- 3, which was obtained from least-squares (Pt(x)/Pd(1-x))-occupancy analysis of the X-ray data that conclusively revealed the central atom to be pure Pt (occupancy factor, x = 1.00(3)), is fortuitously in agreement with that of 7.6(7) found from an X-ray Pt/Pd microanalysis (WDS spectrometer) on three crystals of 1. Our utilization of this site-occupancy (Pt(x)Pd(1-x))-analysis for shells 1-3 originated from the microanalytical results; otherwise, the presumed metal-core composition would have been (mu(12)-Pt)Pd(164). [Alternatively, the (mu(12)-Pt)M(164) core-geometry of 1 may be viewed as a pseudo-Ih Pt-centered six-shell successive nu(1) polyhedral system, each with

  19. Clinical trial of {sup 166}Ho-CHICO in the treatment of rheumatoid knee synovitis

    Energy Technology Data Exchange (ETDEWEB)

    Kim, S. Y.; Yoo, D. H.; Bae, S. C.; Lee, I. H.; Jung, S. S.; Jun, J. B.; Kim, T. H.; Kim, S. S. [Hanyang Univ., Seoul (Korea)

    2000-03-01

    The untreated, chronic synovial inflammation leads to pannus formation and eventual destruction of the articular cartilage. In cases where medical therapy was unsuccessful, surgical of radiation synovectomy over surgical synovectomy are (1) greater destruction of diseased synovium, (2) reduced Potential for blood clots and infection, (3) no requirement for anesthesia, and (4) less costly and less time consuming. Recently KAERI developed Dy-165 HMA, which was characterized by the absence of iron and a higher concentration of dysprosium. And then more recently KAERI also developed {sup 16H}o-CHICO, which was characterized by relatively longer half-life (26.8 hr), more biological due to organic nature of chitosan, more even spatial distribution due to colloidal solution, and more absorbable to synovium than Dy-165 HMA. These long-term follow-up results indicate that the {sup 166}Ho-CHICO is an effective and safe agent for radiation synovectomy for knee synovitis in patients with rheumatoid arthritis as well as the other chronic arthritides. But further large scaled and controlled study are required. 16 refs. (Author)

  20. 1,65 miljardi dollari eest edevust ning näpatud saateid / Kalle Kose

    Index Scriptorium Estoniae

    Kose, Kalle

    2006-01-01

    Interneti sotsiaalvõrgustikust YouTube ja selle liitumisest Google'iga. Vt. ka: Intervjuu kasutajaga : "YouTube'i pärast on jäänud nii mõndagi tegemata." Aktsiakaupleja Oliver Peek räägib YouTube'i kasutamisest teleri asendajana. Diagramm: Videovahetuse keskkondade turuosad. Graafik: Videovahetuskeskkondade turuosa kasv USA-s