Science.gov

Sample records for dysprosium 166

  1. Metals fact sheet - Dysprosium

    SciTech Connect

    1997-01-01

    The article contains a summary of factors pertinent to dysprosium use. Geology and exploitation, mineral sources, production processes, global production,applications, and the dysprosium market are reviewed. Applications very briefly described include use as a cooling agent in nuclear control rods, magnets, magnetostrictive devices, phosphors, photoelectric devices, and glass. Current and historical market prices are given.

  2. Magnetic relaxation in dysprosium-dysprosium collisions

    SciTech Connect

    Newman, Bonna K.; Johnson, Cort; Kleppner, Daniel; Greytak, Thomas J.; Brahms, Nathan; Au, Yat Shan; Connolly, Colin B.; Doyle, John M.

    2011-01-15

    The collisional magnetic reorientation rate constant g{sub R} is measured for magnetically trapped atomic dysprosium (Dy), an atom with large magnetic dipole moments. Using buffer gas cooling with cold helium, large numbers (>10{sup 11}) of Dy are loaded into a magnetic trap and the buffer gas is subsequently removed. The decay of the trapped sample is governed by collisional reorientation of the atomic magnetic moments. We find g{sub R}=1.9{+-}0.5x10{sup -11} cm{sup 3} s{sup -1} at 390 mK. We also measure the magnetic reorientation rate constant of holmium (Ho), another highly magnetic atom, and find g{sub R}=5{+-}2x10{sup -12} cm{sup 3} s{sup -1} at 690 mK. The Zeeman relaxation rates of these atoms are greater than expected for the magnetic dipole-dipole interaction, suggesting that another mechanism, such as an anisotropic electrostatic interaction, is responsible. Comparison with estimated elastic collision rates suggests that Dy is a poor candidate for evaporative cooling in a magnetic trap.

  3. [166Dy]Dy/166Ho hydroxide macroaggregates: an in vivo generator system for radiation synovectomy.

    PubMed

    Ferro-Flores, G; Hernández-Oviedo, O; Arteaga de Murphy, C; Tendilla, J I; Monroy-Guzmán, F; Pedraza-López, M; Aldama-Alvarado, K

    2004-12-01

    Radiation synovectomy is an effective treatment in patients suffering from inflammatory-rheumatoid and degenerative joint diseases. The aim of this work was to examine the feasibility of preparing dysprosium-166 (166Dy)/holmium-166(166Ho) hydroxide macroaggregates ([166Dy]Dy/166Ho-HM) as an in vivo generator for radiation synovectomy evaluating whether the stability of 166Dy-HM and 166Ho-HM complexes is maintained when the daughter 166Ho is formed. The Monte Carlo (MCNP4B) theoretical depth dose profile for the in vivo [166Dy]Dy/166Ho generator system in a joint model was calculated and compared with that produced by 90Y, 153Sm and 166Ho. 166Dy was obtained by neutron irradiation of enriched 164Dy2O3 in a Triga Mark III reactor. Macroaggregates were prepared by reaction of [166Dy]DyCl3 with 0.5 M NaOH in an ultrasonic bath. [166Dy]Dy/166Ho-HM was obtained with radiochemical purity >99.5% and with the majority of particles in the 2-5 microm range. In vitro studies demonstrated that the radio-macroaggregates are stable in saline solution and human serum without a significant change in the particle size over 14 d, suggesting that no translocation of the daughter nucleus occurs subsequent to beta- decay of 166Dy. Biological studies in normal rats demonstrated high retention in the knee joint even 7 d after [166Dy]Dy/166Ho-HM administration. The Monte Carlo (MCNP4B) theoretical depth dose profiles in a joint model, showed that the in vivo [166Dy]Dy/166Ho generator system would produce 25% and 50% less radiation dose to the articular cartilage and bone surface, respectively, than that produced by 90Y or pure 166Ho in a treatment with the same therapeutic dose to the synovium surface. Despite that 153Sm showed the best depth dose profile sparing doses to healthy tissues, the use of 166Dy could provide the advantage of being applied in patients that cannot be reached within a few hours from a nuclear reactor and to produce less radiation exposure to the medical personnel

  4. Dysprosium magneto-optical traps

    SciTech Connect

    Youn, Seo Ho; Lu Mingwu; Ray, Ushnish; Lev, Benjamin L.

    2010-10-15

    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, and trap dynamics--is provided.

  5. Preparation and properties of dysprosium nanocapsules coated with boron, carbon, and dysprosium oxide

    SciTech Connect

    Si, P.Z.; Brueck, E.; Zhang, Z.D.; Skorvanek, I.; Kovac, J.; Zhang, M

    2004-06-08

    Boron-coated dysprosium/dysprosium oxide, carbon-coated dysprosium/DyC{sub 2}, and dysprosium oxide-coated dysprosium nanocapsules were prepared using an arc discharge method in diborane, methane, and argon, respectively. The magnetization of these nanocapsules has been measured at temperatures between 4 and 290 K, in applied fields up to 6 T. The transition temperature of nanocrystalline Dy from the helical phase to the ferromagnetic phase is much lower than that of bulk Dy. The linear temperature dependence of the inverse susceptibility of these nanocapsules, being a mixture of superparamagnetic Dy and paramagnetic dysprosium oxide or carbide, can be explained within the molecular field theory with magnetic moments with the total angular momentum J=15/2 and the Lande factor g=4/3. We discuss the relations between the structure and the magnetization of these nanocapsules.

  6. Labeling of biotin with [166Dy]Dy/166Ho as a stable in vivo generator system.

    PubMed

    Ferro-Flores, G; Arteaga de Murphy, C; Pedraza-López, M; Monroy-Guzmán, F; Meléndez-Alafort, L; Tendilla, J I; Jiménez-Varela, R

    2003-04-14

    The aim of this work was to synthesize [166Dy]Dy/166Ho-DTPA-Biotin to evaluate its potential as a new radiopharmaceutical for targeted radiotherapy. Dysprosium-166 (166Dy) was obtained by neutron irradiation of enriched 164Dy(2)O(3) in a Triga Mark III reactor. The labeling was carried out in aqueous media at pH 8.0 by addition of [166Dy]DyCl(3) to diethylenetriaminepentaacetic-alpha,omega-bis(biocytinamide) (DTPA-Biotin). Radiochemical purity was determined by high-performance liquid chromatography (HPLC) and TLC. The biological integrity of labeled biotin was studied evaluating its avidity for avidin in an agarose column and by size-exclusion HPLC analysis of the radiolabeled DTPA-Biotin with and without the addition of avidin. Stability studies against dilution were carried out by diluting the radiocomplex solution with saline solution and with human serum at 37 degrees C for 24 h. The [166Dy]Dy/166Ho-labeled biotin was obtained with a 99.1+/-0.6% radiochemical purity. In vitro studies demonstrated that [166Dy]Dy/166Ho-DTPA-Biotin is stable after dilution in saline and in human serum and no translocation of the daughter nucleus occurs subsequent to beta(-) decay of 166Dy that could produce release of 166Ho(3+). Avidity of labeled biotin for avidin was not affected by the labeling procedure. Biodistribution studies in normal mice showed that the [166Dy]Dy/166Ho-DTPA-Biotin has a high renal clearance. In conclusion, the radiolabeled biotin prepared in this investigation has adequate properties to work as a stable in vivo generator system for targeted radiotherapy. PMID:12672609

  7. Paramagnetic dysprosium oxide nanoparticles and dysprosium hydroxide nanorods as T₂ MRI contrast agents.

    PubMed

    Kattel, Krishna; Park, Ja Young; Xu, Wenlong; Kim, Han Gyeol; Lee, Eun Jung; Bony, Badrul Alam; Heo, Woo Choul; Jin, Seonguk; Baeck, Jong Su; Chang, Yongmin; Kim, Tae Jeong; Bae, Ji Eun; Chae, Kwon Seok; Lee, Gang Ho

    2012-04-01

    We report here paramagnetic dysprosium nanomaterial-based T(2) MRI contrast agents. A large r(2) and a negligible r(1) is an ideal condition for T(2) MR imaging. At this condition, protons are strongly and nearly exclusively induced for T(2) MR imaging. The dysprosium nanomaterials fairly satisfy this because they are found to possess a decent r(2) but a negligible r(1) arising from L + S state 4f-electrons in Dy(III) ion ((6)H(15/2)). Their r(2) will also further increase with increasing applied field because of unsaturated magnetization at room temperature. Therefore, MR imaging and various physical properties of the synthesized d-glucuronic acid coated ultrasmall dysprosium oxide nanoparticles (d(avg) = 3.2 nm) and dysprosium hydroxide nanorods (20 × 300 nm) are investigated. These include hydrodynamic diameters, magnetic properties, MR relaxivities, cytotoxicities, and 3 tesla in vivo T(2) MR images. Here, MR imaging properties of dysprosium hydroxide nanorods have not been reported so far. These two samples show r(2)s of 65.04 and 181.57 s(-1)mM(-1), respectively, with negligible r(1)s at 1.5 tesla and at room temperature, no in vitro cytotoxicity up to 100 μM Dy, and clear negative contrast enhancements in 3 tesla in vivo T(2) MR images of a mouse liver, which will be even more improved at higher MR fields. Therefore, d-glucuronic acid coated ultrasmall dysprosium oxide nanoparticles with renal excretion can be a potential candidate as a sensitive T(2) MRI contrast agent at MR field greater than 3 tesla.

  8. Phenalenyl-based mononuclear dysprosium complexes.

    PubMed

    Lan, Yanhua; Magri, Andrea; Fuhr, Olaf; Ruben, Mario

    2016-01-01

    The phenalenyl-based dysprosium complexes [Dy(PLN)2(HPLN)Cl(EtOH)] (1), [Dy(PLN)3(HPLN)]·[Dy(PLN)3(EtOH)]·2EtOH (2) and [Dy(PLN)3(H2O)2]·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 (1)H 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. PMID:27547617

  9. Phenalenyl-based mononuclear dysprosium complexes

    PubMed Central

    Magri, Andrea; Fuhr, Olaf

    2016-01-01

    Summary The phenalenyl-based dysprosium complexes [Dy(PLN)2(HPLN)Cl(EtOH)] (1), [Dy(PLN)3(HPLN)]·[Dy(PLN)3(EtOH)]·2EtOH (2) and [Dy(PLN)3(H2O)2]·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. PMID:27547617

  10. Phenalenyl-based mononuclear dysprosium complexes.

    PubMed

    Lan, Yanhua; Magri, Andrea; Fuhr, Olaf; Ruben, Mario

    2016-01-01

    The phenalenyl-based dysprosium complexes [Dy(PLN)2(HPLN)Cl(EtOH)] (1), [Dy(PLN)3(HPLN)]·[Dy(PLN)3(EtOH)]·2EtOH (2) and [Dy(PLN)3(H2O)2]·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 (1)H 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. Dosimetry of in situ activated dysprosium microspheres.

    PubMed

    Adnani, N

    2004-03-01

    This paper presents the results of a study aimed at investigating the dosimetry of stable dysprosium microspheres activated, in situ, by a linac generated photon beam. In phantom measurements of the neutron flux within an 18 MV photon beam were performed using CR-39 detectors and gold activation. The results were used in conjunction with a Monte Carlo computer simulation to investigate the dose distribution resulting from the activation of dysprosium (Dy) microspheres using an 18 MV photon beam. Different depths, lesion volumes and volume concentrations of microspheres are investigated. The linac lower collimator jaws are assumed completely closed to shield the tumour volume from the photon dose. Using a single AP field with 0 x 0 cm2 field size (closed jaws), a photon dose rate of 600 MU min(-1) and 80 cm SSD for 10 min, an average dose exceeding 1 Gy can be delivered to spherical lesions of 0.5 cm and higher diameter. The variation of the average dose with the size of the lesion reaches saturation for tumour volumes exceeding 1 cm in diameter. This report shows that the photon beam of a high-energy linac can be used to activate Dy microspheres in situ and, as a result, deliver a significant dose of beta radiation. Non-radioactive Dy microspheres do not have the toxicity and imaging problems associated with commercially available yttrium-90 based products. PMID:15070199

  12. Dysprosium oxide and dysprosium-oxide-doped titanium oxide thin films grown by atomic layer deposition

    SciTech Connect

    Tamm, Aile Kozlova, Jekaterina; Aarik, Lauri; Aarik, Jaan; Kukli, Kaupo; Link, Joosep; Stern, Raivo

    2015-01-15

    Dysprosium oxide and dysprosium-oxide-doped titanium oxide thin films were grown by atomic layer deposition on silicon substrates. For depositing dysprosium and titanium oxides Dy(thd){sub 3}-O{sub 3} and TiCl{sub 4}-O{sub 3} were used as precursors combinations. Appropriate parameters for Dy(thd){sub 3}-O{sub 3} growth process were obtained by using a quartz crystal microbalance system. The Dy{sub 2}O{sub 3} films were deposited on planar substrates and on three-dimensional substrates with aspect ratio 1:20. The Dy/Ti ratio of Dy{sub 2}O{sub 3}-doped TiO{sub 2} films deposited on a planar silicon substrate ranged from 0.04 to 0.06. Magnetometry studies revealed that saturation of magnetization could not be observed in planar Dy{sub 2}O{sub 3} films, but it was observable in Dy{sub 2}O{sub 3} films on 3D substrates and in doped TiO{sub 2} films with a Dy/Ti atomic ratio of 0.06. The latter films exhibited saturation magnetization 10{sup −6} A cm{sup 2} and coercivity 11 kA/m at room temperature.

  13. Tetravalent dysprosium in a perovskite-type oxide.

    PubMed

    Han, Donglin; Uda, Tetsuya; Nose, Yoshitaro; Okajima, Toshihiro; Murata, Hidenobu; Tanaka, Isao; Shinoda, Kozo

    2012-04-17

    The existence of tetravalent dysprosium in perovskite-type oxide barium zirconate is confirmed in this work. This discovery will stimulate many researchers in diverse fields such as catalysts, solid state ionics, sensors, and fluorescent materials.

  14. Dynamic polarizabilities and magic wavelengths for dysprosium

    SciTech Connect

    Dzuba, V. A.; Flambaum, V. V.; Lev, Benjamin L.

    2011-03-15

    We theoretically study dynamic scalar polarizabilities of the ground and select long-lived excited states of dysprosium, a highly magnetic atom recently laser cooled and trapped. We demonstrate that there is a set of magic wavelengths of the unpolarized lattice laser field for each pair of states, which includes the ground state and one of these excited states. At these wavelengths, the energy shift due to laser field is the same for both states, which can be useful for resolved sideband cooling on narrow transitions and precision spectroscopy. We present an analytical formula that, near resonances, allows for the determination of approximate values of the magic wavelengths without calculating the dynamic polarizabilities of the excited states.

  15. Transverse laser cooling of a thermal atomic beam of dysprosium

    SciTech Connect

    Leefer, N.; Cingoez, A.; Gerber-Siff, B.; Sharma, Arijit; Torgerson, J. R.; Budker, D.

    2010-04-15

    A thermal atomic beam of dysprosium atoms is cooled using the 4f{sup 10}6s{sup 2}(J=8){yields}4f{sup 10}6s6p(J=9) transition at 421 nm. The cooling is done via a standing light wave orthogonal to the atomic beam. Efficient transverse cooling to the Doppler limit is demonstrated for all observable isotopes of dysprosium. Branching ratios to metastable states are demonstrated to be <5x10{sup -4}. A scheme for enhancement of the nonzero-nuclear-spin-isotope cooling and a method for direct identification of possible trap states are proposed.

  16. Discovery of dysprosium, holmium, erbium, thulium, and ytterbium isotopes

    SciTech Connect

    Fry, C.; Thoennessen, M.

    2013-09-15

    Currently, thirty-one dysprosium, thirty-two holmium, thirty-two erbium, thirty-three thulium, and thirty-one ytterbium isotopes have been observed and the discovery of these isotopes is described here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.

  17. Selected-control synthesis of dysprosium hydroxide and oxide nanorods by adjusting hydrothermal temperature

    SciTech Connect

    Song Xuchun Zheng Yifan; Wang Yun

    2008-05-06

    Dysprosium hydroxide and oxide nanorods were prepared directly from commercial bulk Dy{sub 2}O{sub 3} crystals by facile hydrothermal process at 130 and 210 deg. C, respectively. The as-synthesized dysprosium hydroxide and oxide nanorods were investigated by various techniques of XRD, TEM, SEM, and EDS. In the process, the temperature was found to play important roles in determining produce dysprosium hydroxide and oxide nanorods.

  18. Nuclear Data Sheets for A = 166

    SciTech Connect

    Baglin, Coral M.

    2008-05-01

    Nuclear structure data pertaining to all known A = 166 nuclides (Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt) have been compiled and evaluated, and incorporated into the ENSDF data file. This evaluation for A = 166 supersedes the previous publication (E.N. Shurshikov and N.V. Timofeeva, Nuclear Data Sheets 67, 45 (1992) (literature cutoff date 1 October 1990)) and the revision by C.M. Baglin of {sup 166}W (literature cutoff data 16 April 2000). It includes literature available by 1 March 2008. Subsequent to the previous evaluation, {sup 166}Gd has been observed for the first time and the first observations of excited states in {sup 166}Tb, {sup 166}Re, {sup 166}Os and {sup 166}Ir have been reported: also, knowledge of collective structure in {sup 166}Dy. {sup 166}Ho, {sup 1676}Er, {sup 166}Tm, {sup 166}Yb, {sup 166}Lu, {sup 166}Hf, and {sup 166}Ta has been considerably expanded. However, the structure suggested here for {sup 166}Re is highly tentative and a further, more detailed study of {alpha} decay into (and out of) {sup 166}Re could be informative.

  19. Study of electronic structure and spin polarization of dysprosium

    SciTech Connect

    Mund, H. S.

    2015-06-24

    In this paper, I have presented the spin-dependent momentum density of ferromagnetic dysprosium using spin polarized relativistic Korringa-Kohn-Rostoker method. A fully relativistic approach has been used to determine the magnetic Compton profile. The density of state in term of majority-spin and minority-spin of Dy also calculated using SPR-KKR. The magnetic Compton profile discussed in term of 4f and diffused electrons.

  20. Magnetic structure of dysprosium in epitaxial Dy films and in Dy/Er superlattices

    SciTech Connect

    Dumesnil, K.; Dufour, C.; Mangin, P.; Marchal, G.; Hennion, M.

    1996-09-01

    We present a magnetization and neutron-diffraction study of the basal plane magnetic structure of Dy epitaxial films and Dy/Er superlattices. The thermal evolution of the magnetic phases, the stability of the helical phase under a magnetic field, the thermal variation of the dysprosium in-plane and {ital c} parameters, and of the dysprosium turn angle are successively shown. In Dy/Er superlattices, the dysprosium helix propagates coherently through paramagnetic erbium; at low temperature, individual dysprosium layers undergo a ferromagnetic transition and are coupled antiferromagnetically to each other for erbium layers thicknesses larger than 20 A. In dysprosium films, as expected from the epitaxy effect, the Curie temperature of dysprosium is reduced if dysprosium is grown on yttrium and increased if it is grown on erbium, whereas it is unexpectedly close to the bulk value in Dy/Er superlattices. This amazing value of the Curie temperature in superlattices is correlated to two main experimentally observed effects: (i) the magnetoelastic driving force is reduced compared to bulk dysprosium because of the clamped {gamma} distortion; (ii) the difference between the exchange energies in the helical and the ferromagnetic phases is increased compared to the bulk value. {copyright} {ital 1996 The American Physical Society.}

  1. Dysprosium electrodeposition from a hexaalkylguanidinium-based ionic liquid

    NASA Astrophysics Data System (ADS)

    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

  2. Dysprosium electrodeposition from a hexaalkylguanidinium-based ionic liquid.

    PubMed

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

    2016-08-01

    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. PMID:27121463

  3. Dysprosium electrodeposition from a hexaalkylguanidinium-based ionic liquid.

    PubMed

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

    2016-08-01

    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.

  4. Joint solubility of samarium and dysprosium in solid magnesium

    NASA Astrophysics Data System (ADS)

    Rokhlin, L. L.; Dobatkina, T. V.; Lukyanova, E. A.; Korolkova, I. G.; Tarytina, I. E.

    2016-03-01

    The phase compositions of solid Mg-Sm-Dy alloys corresponding to the magnesium-corner region of the phase diagram are studied by optical and scanning electron microscopy, electrical resistivity measurements, and electron microprobe analysis. The obtained results allowed us to determine the joint solubility of samarium and dysprosium in solid magnesium at 500, 400, and 300°C; it decreases with decreasing temperature. The magnesium solid solution is found to be in equilibrium only with the Mg41Sm5 and Mg24Dy5 compounds, which are in equilibrium with the magnesium solid solution in the binary Mg-Sm and Mg-Dy systems.

  5. 7 CFR 1.166 - Consent order.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 1 2010-01-01 2010-01-01 false Consent order. 1.166 Section 1.166 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Rules of Practice Governing Cease and Desist Proceedings Under Section 2 of the Capper-Volstead Act § 1.166 Consent order. At any...

  6. 16 CFR 16.6 - Charter.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 16 Commercial Practices 1 2011-01-01 2011-01-01 false Charter. 16.6 Section 16.6 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE ADVISORY COMMITTEE MANAGEMENT § 16.6 Charter. (a) No advisory committee established, utilized, reestablished or renewed by...

  7. 16 CFR 16.6 - Charter.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 16 Commercial Practices 1 2013-01-01 2013-01-01 false Charter. 16.6 Section 16.6 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE ADVISORY COMMITTEE MANAGEMENT § 16.6 Charter. (a) No advisory committee established, utilized, reestablished or renewed by the Commission under this part shall meet or...

  8. 16 CFR 16.6 - Charter.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 1 2012-01-01 2012-01-01 false Charter. 16.6 Section 16.6 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE ADVISORY COMMITTEE MANAGEMENT § 16.6 Charter. (a) No advisory committee established, utilized, reestablished or renewed by...

  9. 16 CFR 16.6 - Charter.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Charter. 16.6 Section 16.6 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE ADVISORY COMMITTEE MANAGEMENT § 16.6 Charter. (a) No advisory committee established, utilized, reestablished or renewed by...

  10. 16 CFR 16.6 - Charter.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 16 Commercial Practices 1 2014-01-01 2014-01-01 false Charter. 16.6 Section 16.6 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE ADVISORY COMMITTEE MANAGEMENT § 16.6 Charter. (a) No advisory committee established, utilized, reestablished or renewed by...

  11. 9 CFR 166.13 - Licensee responsibilities.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Licensee responsibilities. 166.13 Section 166.13 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.13...

  12. 9 CFR 166.9 - Recordkeeping.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Recordkeeping. 166.9 Section 166.9 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.9 Recordkeeping. (a) Each...

  13. 9 CFR 166.9 - Recordkeeping.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Recordkeeping. 166.9 Section 166.9 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.9 Recordkeeping. (a) Each...

  14. 9 CFR 166.10 - Licensing.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Licensing. 166.10 Section 166.10 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.10 Licensing. (a) Application....

  15. 9 CFR 166.13 - Licensee responsibilities.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Licensee responsibilities. 166.13 Section 166.13 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.13...

  16. 9 CFR 166.15 - State status.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false State status. 166.15 Section 166.15 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.15 State status. (a) The...

  17. 33 CFR 166.105 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Definitions. 166.105 Section 166... WATERWAYS SAFETY SHIPPING SAFETY FAIRWAYS General § 166.105 Definitions. (a) Shipping safety fairway or fairway means a lane or corridor in which no artificial island or fixed structure, whether temporary...

  18. 33 CFR 166.105 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Definitions. 166.105 Section 166... WATERWAYS SAFETY SHIPPING SAFETY FAIRWAYS General § 166.105 Definitions. (a) Shipping safety fairway or fairway means a lane or corridor in which no artificial island or fixed structure, whether temporary...

  19. 33 CFR 166.105 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Definitions. 166.105 Section 166... WATERWAYS SAFETY SHIPPING SAFETY FAIRWAYS General § 166.105 Definitions. (a) Shipping safety fairway or fairway means a lane or corridor in which no artificial island or fixed structure, whether temporary...

  20. 22 CFR 16.6 - Security clearances.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Security clearances. 16.6 Section 16.6 Foreign Relations DEPARTMENT OF STATE PERSONNEL FOREIGN SERVICE GRIEVANCE SYSTEM § 16.6 Security clearances. The agencies shall use their best endeavors to expedite security clearances whenever necessary to ensure a...

  1. 7 CFR 1427.166 - Insurance.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Insurance. 1427.166 Section 1427.166 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS COTTON Recourse Seed Cotton Loans § 1427.166 Insurance....

  2. 7 CFR 1427.166 - Insurance.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Insurance. 1427.166 Section 1427.166 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS COTTON Recourse Seed Cotton Loans § 1427.166 Insurance....

  3. 9 CFR 166.13 - Licensee responsibilities.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Licensee responsibilities. 166.13 Section 166.13 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.13...

  4. 9 CFR 166.9 - Recordkeeping.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Recordkeeping. 166.9 Section 166.9 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.9 Recordkeeping. (a) Each...

  5. 9 CFR 166.9 - Recordkeeping.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Recordkeeping. 166.9 Section 166.9 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.9 Recordkeeping. (a) Each...

  6. 9 CFR 166.9 - Recordkeeping.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 9 Animals and Animal Products 1 2012-01-01 2012-01-01 false Recordkeeping. 166.9 Section 166.9 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.9 Recordkeeping. (a) Each...

  7. 40 CFR 166.25 - Agency review.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 25 2012-07-01 2012-07-01 false Agency review. 166.25 Section 166.25... Health Exemptions § 166.25 Agency review. (a) General. The Agency will review all requests as... is needed. The Agency will review the application and other available data necessary to make...

  8. 40 CFR 166.25 - Agency review.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Agency review. 166.25 Section 166.25... Health Exemptions § 166.25 Agency review. (a) General. The Agency will review all requests as... is needed. The Agency will review the application and other available data necessary to make...

  9. 22 CFR 16.6 - Security clearances.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Security clearances. 16.6 Section 16.6 Foreign Relations DEPARTMENT OF STATE PERSONNEL FOREIGN SERVICE GRIEVANCE SYSTEM § 16.6 Security clearances. The agencies shall use their best endeavors to expedite security clearances whenever necessary to ensure a...

  10. 17 CFR 166.1 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Definitions. 166.1 Section 166.1 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION CUSTOMER PROTECTION RULES § 166.1 Definitions. (a) The term Commission registrant as used in this part means any person who...

  11. 7 CFR 1427.166 - Insurance.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false Insurance. 1427.166 Section 1427.166 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS COTTON Recourse Seed Cotton Loans § 1427.166 Insurance....

  12. 7 CFR 1427.166 - Insurance.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false Insurance. 1427.166 Section 1427.166 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS COTTON Recourse Seed Cotton Loans § 1427.166 Insurance....

  13. 7 CFR 1427.166 - Insurance.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false Insurance. 1427.166 Section 1427.166 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS COTTON Recourse Seed Cotton Loans § 1427.166 Insurance....

  14. 22 CFR 16.6 - Security clearances.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Security clearances. 16.6 Section 16.6 Foreign Relations DEPARTMENT OF STATE PERSONNEL FOREIGN SERVICE GRIEVANCE SYSTEM § 16.6 Security clearances. The agencies shall use their best endeavors to expedite security clearances whenever necessary to ensure a...

  15. 22 CFR 16.6 - Security clearances.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Security clearances. 16.6 Section 16.6 Foreign Relations DEPARTMENT OF STATE PERSONNEL FOREIGN SERVICE GRIEVANCE SYSTEM § 16.6 Security clearances. The agencies shall use their best endeavors to expedite security clearances whenever necessary to ensure a...

  16. Oxyfluorotellurite glasses doped by dysprosium ions. Thermal and optical properties

    NASA Astrophysics Data System (ADS)

    Klimesz, Barbara; Ryba-Romanowski, Witold; Lisiecki, Radosław

    2015-04-01

    The paper shows results of investigation of thermal and optical properties of oxyfluorotellurite (65 - x)TeO2-20ZnF2-12Pb2O5-3Nb2O5-xDy2O3 (x = 0.5, 2 and 5) glass systems. Thermal stability and the onset of crystallization of the materials were monitored by differential thermal analysis (DTA). It was found that characteristic parameters, namely glass transition temperatures (Tg), onset of crystallization temperatures (Tc) and thermal stability criteria ΔT and H' increased with increasing Dy2O3 content indicating that the incorporation of dysprosium ions improves substantially thermal stability of glass system under study. Optical absorption and emission spectra of Dy3+ ions in oxyfluorotellurite glass were investigated at room temperature in the visible (VIS) and near-infrared (NIR) region. Oscillator strengths, phenomenological Judd-Ofelt (JO) intensity parameters Ω2,4,6, radiative transition probabilities, branching ratios and radiative lifetimes of luminescent levels were determined. Decay curves of the 4F9/2 luminescence of incorporated Dy3+ ions were recorded and analysed. Lifetimes and the luminescence dynamics were studied as a function of the Dy2O3 concentration. It was concluded that good thermal stability combined with desirable spectroscopic parameters of investigated dysprosium-doped oxyfluorotellurite glass point at the suitability of this material for the design of UV-excited visible phosphors.

  17. Photoelectric and luminescent properties of dysprosium-doped silver chloride

    SciTech Connect

    Novikov, G. F. Rabenok, E. V.; Bocharov, K. V.; Lichkova, N. V.; Ovchinnikov, O. V.; Latyshev, A. N.

    2011-02-15

    The influence of dysprosium doping on the photoelectric and luminescent properties of AgCl crystals is studied by methods of microwave photoconductivity and photoluminescence. Doping affects both the loss kinetics of photogenerated electrons and luminescence spectra and parameters of photostimulated burst of luminescence. It is shown that the charged [Dy{sub Ag}{sup {center_dot}{center_dot}} {center_dot} V Prime {sub Ag}]{sup {center_dot}} or neutral [Dy{sub Ag}{sup {center_dot}{center_dot}} {center_dot} 2V Prime {sub Ag}]{sup x} complexes are responsible for a new luminescence band peaked at 470 nm, which manifests itself at weight concentrations of the doping additive >10{sup -6}%. The long-wavelength shoulder at 570 nm in the photoluminescence spectra is attributed to intracenter transitions in the Dy{sup 3+} ions. The rate constant of the reaction of electron capture into the traps forming upon introduction of the dopant, k{sub t} = (3-5) Multiplication-Sign 10{sup -8} cm{sup 3} s{sup -1}, is evaluated. It is assumed that the traps are Dy{sup 3+} dysprosium ions.

  18. Two dysprosium-incorporated tungstoarsenates: synthesis, structures and magnetic properties.

    PubMed

    Li, Fengyan; Guo, Weihua; Xu, Lin; Ma, Lifang; Wang, Yuchao

    2012-08-14

    Two dysprosium-containing tungstoarsenates [C(NH(2))(3)](11)[Dy(2)(Hcit)(2)(AsW(10)O(38))]·9H(2)O (1) and K(8-n)H(3-n)[Dy(3-n)K(n)(H(2)O)(3)(CO(3))(A-α-AsW(9)O(34))(A-β-AsW(9)O(34))]·22H(2)O (n = 0 or 1) (2) have been synthesized and characterized by single-crystal X-ray diffraction, elemental analyses, thermogravimetric analyses and infrared spectroscopy. Compound 1 is a citrate-decorated Keggin type di-substituted Ln/POM derivative with the two non-adjacent substituted sites occupied. Compound 2 is composed of two different trivacant Keggin unit isomers [A-α-AsW(9)O(34)](9-) and [A-β-AsW(9)O(34)](9-), linked to each other via one {Dy(3-n)K(n)(H(2)O)(3)(CO(3))}((7 - 2n)+) (n = 0 or 1) unit, where CO(3)(2-) is encapsulated in the triangle plane, resulting in a stable dysprosium carbonate-containing sandwich-type polyoxoanion with D(2h) symmetry. The investigation on both static and dynamic magnetic properties of 1 and 2 show that the magnetic relaxation behavior of 2 appear in a static magnetic field of 5000 Oe, while 1 shows no positive out-of-phase ac susceptibility.

  19. Dysprosium oxide ceramic arc tube for HID lamps

    NASA Astrophysics Data System (ADS)

    Wei, G. C.; Lapatovich, W. P.; Browne, J.; Snellgrove, R.

    2008-07-01

    Polycrystalline dysprosium oxide is a candidate arc tube material for advanced metal halide lamps because of high transparency, low thermodynamic driving potentials for corrosion and reaction with the salt fills, satisfactory mechanical strength and resistance to thermal shock. This material is cubic and can be polished to achieve higher in-line transmittance than the conventional polycrystalline alumina arc tubes. Rare-earth halide fills, glass frit seals and niobium leads were used in the construction of the Dy2O3 lamps. The experimental lamps exhibited a colour temperature of ~2500 K and CRI of ~90 with rapid warm-up behaviour. The transparent Dy2O3 ceramic offers opportunities to push the limit of ceramic envelopes for improved discharge lamps.

  20. Theoretical study of some experimentally relevant states of dysprosium

    SciTech Connect

    Dzuba, V. A.; Flambaum, V. V.

    2010-05-15

    Configuration interaction method is used to calculate transition amplitudes and other properties of the low states of dysprosium which are used in cooling and in the study of the time variation of the fine structure constant and violation of fundamental symmetries. The branching ratio for the cooling state to decay to states other than ground states is found to be smaller than 10{sup -4}. The matrix element of the weak interaction between degenerate states at E=19797.96 cm{sup -1} is about 4 Hz which is consistent with the experimental limit |H{sub W}|=|2.3{+-}2.9(stat.){+-}0.7(syst.)| Hz [A. T. Nguyen, D. Budker, D. DeMille, and M. Zolotorev, Phys. Rev. A 56, 3453 (1997)] and points to feasibility of its experimental measurement. Applications include the search for physics beyond the standard model using the parity nonconservation (PNC) isotopic chain approach.

  1. Peptoid-ligated pentadecanuclear yttrium and dysprosium hydroxy clusters.

    PubMed

    Thielemann, Dominique T; Wagner, Anna T; Lan, Yanhua; Oña-Burgos, Pascual; Fernández, Ignacio; Rösch, Esther S; Kölmel, Dominik K; Powell, Annie K; Bräse, Stefan; Roesky, Peter W

    2015-02-01

    A new family of pentadecanuclear coordination cluster compounds (from now on simply referred to as clusters) [{Ln15 (OH)20 (PepCO2 )10 (DBM)10 Cl}Cl4 ] (PepCO2 =2-[{3-(((tert-butoxycarbonyl)amino)methyl)benzyl}amino]acetate, DBM=dibenzoylmethanide) with Ln=Y and Dy was obtained by using the cell-penetrating peptoid (CPPo) monomer PepCO2 H and dibenzoylmethane (DBMH) as supporting ligands. The combination of an inorganic cluster core with an organic cell-penetrating peptoid in the coordination sphere resulted in a core component {Ln15 (μ3 -OH)20 Cl}(24+) (Ln=Y, Dy), which consists of five vertex-sharing heterocubane {Ln4 (μ3 -OH)4 }(8+) units that assemble to give a pentagonal cyclic structure with one Cl atom located in the middle of the pentagon. The solid-state structures of both clusters were established by single-crystal X-ray crystallography. MS (ESI) experiments suggest that the cluster core is robust and maintained in solution. Pulsed gradient spin echo (PGSE) NMR diffusion measurements were carried out on the diamagnetic yttrium compound and confirmed the stability of the cluster in its dicationic form [{Y15 (μ3 -OH)20 (PepCO2 )10 (DBM)10 Cl}Cl2 ](2+) . The investigation of both static (dc) and dynamic (ac) magnetic properties in the dysprosium cluster revealed a slow relaxation of magnetization, indicative of single-molecule magnet (SMM) behavior below 8 K. Furthermore, the χT product as a function of temperature for the dysprosium cluster gave evidence that this is a ferromagnetically coupled compound below 11 K.

  2. Butterfly-shaped pentanuclear dysprosium single-molecule magnets.

    PubMed

    Tian, Haiquan; Zhao, Lang; Lin, Haifeng; Tang, Jinkui; Li, Guangshe

    2013-09-23

    Two new "butterfly-shaped" pentanuclear dysprosium(III) clusters, [Dy5(μ3-OH)3(opch)6(H2O)3]⋅3 MeOH⋅9 H2O (1) and [Dy5(μ3-OH)3(Hopch)2(opch)4(MeOH)(H2O)2]⋅(ClO4)2⋅6 MeOH⋅4 H2O (2), which were based on the heterodonor-chelating ligand o-vanillin pyrazine acylhydrazone (H2opch), have been successfully synthesized by applying different reaction conditions. Single-crystal X-ray diffraction analysis revealed that the butterfly-shaped cores in both compounds were comparable. However, their magnetic properties were drastically different. Indeed, compound 1 showed dual slow-relaxation processes with a transition between them that corresponded to energy gaps (Δ) of 8.1 and 37.9 K and pre-exponential factors (τ0) of 1.7×10(-5) and 9.7×10(-8)  s for the low- and high-temperature domains, respectively, whilst only a single relaxation process was noted for compound 2 (Δ = 197 K, τ0 = 3.2×10(-9)  s). These significant disparities are most likely due to the versatile coordination of the H2opch ligands with particular keto-enol tautomerism, which alters the strength of the local crystal field and, hence, the nature or direction of the easy axes of anisotropic dysprosium ions.

  3. Peptoid-ligated pentadecanuclear yttrium and dysprosium hydroxy clusters.

    PubMed

    Thielemann, Dominique T; Wagner, Anna T; Lan, Yanhua; Oña-Burgos, Pascual; Fernández, Ignacio; Rösch, Esther S; Kölmel, Dominik K; Powell, Annie K; Bräse, Stefan; Roesky, Peter W

    2015-02-01

    A new family of pentadecanuclear coordination cluster compounds (from now on simply referred to as clusters) [{Ln15 (OH)20 (PepCO2 )10 (DBM)10 Cl}Cl4 ] (PepCO2 =2-[{3-(((tert-butoxycarbonyl)amino)methyl)benzyl}amino]acetate, DBM=dibenzoylmethanide) with Ln=Y and Dy was obtained by using the cell-penetrating peptoid (CPPo) monomer PepCO2 H and dibenzoylmethane (DBMH) as supporting ligands. The combination of an inorganic cluster core with an organic cell-penetrating peptoid in the coordination sphere resulted in a core component {Ln15 (μ3 -OH)20 Cl}(24+) (Ln=Y, Dy), which consists of five vertex-sharing heterocubane {Ln4 (μ3 -OH)4 }(8+) units that assemble to give a pentagonal cyclic structure with one Cl atom located in the middle of the pentagon. The solid-state structures of both clusters were established by single-crystal X-ray crystallography. MS (ESI) experiments suggest that the cluster core is robust and maintained in solution. Pulsed gradient spin echo (PGSE) NMR diffusion measurements were carried out on the diamagnetic yttrium compound and confirmed the stability of the cluster in its dicationic form [{Y15 (μ3 -OH)20 (PepCO2 )10 (DBM)10 Cl}Cl2 ](2+) . The investigation of both static (dc) and dynamic (ac) magnetic properties in the dysprosium cluster revealed a slow relaxation of magnetization, indicative of single-molecule magnet (SMM) behavior below 8 K. Furthermore, the χT product as a function of temperature for the dysprosium cluster gave evidence that this is a ferromagnetically coupled compound below 11 K. PMID:25483296

  4. A nine-coordinated dysprosium(III) compound with an oxalate-bridged dysprosium(III) layer exhibiting two slow magnetic relaxation processes.

    PubMed

    Zhang, Sheng; Ke, Hongshan; Liu, Xiangyu; Wei, Qing; Xie, Gang; Chen, Sanping

    2015-10-21

    A 2D oxalate-bridged dysprosium(III) compound, formulated as [Dy(C2O4)1.5(H2O)3]n·2nH2O (1), has been hydrothermally isolated. As for compound 1, structural analysis reveals that the nine-coordinated Dy(III) ions reside in a slightly distorted tricapped trigonal prism. Under an applied magnetic field of 700 Oe, the compound was magnetically characterized as a new example that two slow relaxations of the magnetization processes can be observed in a 2D oxalate-bridged dysprosium(III) layer. PMID:26327427

  5. A nine-coordinated dysprosium(III) compound with an oxalate-bridged dysprosium(III) layer exhibiting two slow magnetic relaxation processes.

    PubMed

    Zhang, Sheng; Ke, Hongshan; Liu, Xiangyu; Wei, Qing; Xie, Gang; Chen, Sanping

    2015-10-21

    A 2D oxalate-bridged dysprosium(III) compound, formulated as [Dy(C2O4)1.5(H2O)3]n·2nH2O (1), has been hydrothermally isolated. As for compound 1, structural analysis reveals that the nine-coordinated Dy(III) ions reside in a slightly distorted tricapped trigonal prism. Under an applied magnetic field of 700 Oe, the compound was magnetically characterized as a new example that two slow relaxations of the magnetization processes can be observed in a 2D oxalate-bridged dysprosium(III) layer.

  6. 40 CFR 65.166 - Periodic reports.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 16 2013-07-01 2013-07-01 false Periodic reports. 65.166 Section 65.166 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONSOLIDATED FEDERAL AIR RULE Closed Vent Systems, Control Devices, and Routing to a Fuel Gas System or...

  7. 40 CFR 65.166 - Periodic reports.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 15 2010-07-01 2010-07-01 false Periodic reports. 65.166 Section 65.166 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONSOLIDATED FEDERAL AIR RULE Closed Vent Systems, Control Devices, and Routing to a Fuel Gas System or...

  8. 40 CFR 65.166 - Periodic reports.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 16 2014-07-01 2014-07-01 false Periodic reports. 65.166 Section 65.166 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONSOLIDATED FEDERAL AIR RULE Closed Vent Systems, Control Devices, and Routing to a Fuel Gas System or...

  9. 40 CFR 65.166 - Periodic reports.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 16 2012-07-01 2012-07-01 false Periodic reports. 65.166 Section 65.166 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONSOLIDATED FEDERAL AIR RULE Closed Vent Systems, Control Devices, and Routing to a Fuel Gas System or...

  10. 33 CFR 166.103 - Geographic coordinates.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Geographic coordinates. 166.103...) PORTS AND WATERWAYS SAFETY SHIPPING SAFETY FAIRWAYS General § 166.103 Geographic coordinates. Geographic coordinates expressed in terms of latitude or longitude, or both, are not intended for plotting on maps...

  11. 9 CFR 166.7 - Cooking standards.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Cooking standards. 166.7 Section 166.7 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE... be heated throughout at boiling (212 °F. or 100 °C. at sea level) for 30 (thirty) minutes....

  12. 21 CFR 211.166 - Stability testing.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 4 2012-04-01 2012-04-01 false Stability testing. 211.166 Section 211.166 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS: GENERAL CURRENT GOOD MANUFACTURING PRACTICE FOR FINISHED PHARMACEUTICALS Laboratory Controls §...

  13. 21 CFR 211.166 - Stability testing.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 4 2014-04-01 2014-04-01 false Stability testing. 211.166 Section 211.166 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS: GENERAL CURRENT GOOD MANUFACTURING PRACTICE FOR FINISHED PHARMACEUTICALS Laboratory Controls §...

  14. 40 CFR 166.25 - Agency review.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Agency review. 166.25 Section 166.25 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Specific, Quarantine, and...

  15. 21 CFR 211.166 - Stability testing.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 4 2011-04-01 2011-04-01 false Stability testing. 211.166 Section 211.166 Food... characteristics of drug products. The results of such stability testing shall be used in determining appropriate... shelf life studies, there must be stability studies conducted, including drug product testing...

  16. 21 CFR 211.166 - Stability testing.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 4 2010-04-01 2010-04-01 false Stability testing. 211.166 Section 211.166 Food... characteristics of drug products. The results of such stability testing shall be used in determining appropriate... shelf life studies, there must be stability studies conducted, including drug product testing...

  17. 9 CFR 166.15 - State status.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false State status. 166.15 Section 166.15 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE..., Texas, Utah, Vermont, Washington, West Virginia, and Wyoming. (c) The following States have...

  18. 32 CFR 552.166 - Recreational use.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... NATIONAL CEMETERIES REGULATIONS AFFECTING MILITARY RESERVATIONS Land Use Policy for Fort Lewis, Yakima Training Center, and Camp Bonneville § 552.166 Recreational use. (a) Fort Lewis: (1) Individuals or... 32 National Defense 3 2011-07-01 2009-07-01 true Recreational use. 552.166 Section...

  19. 32 CFR 552.166 - Recreational use.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... NATIONAL CEMETERIES REGULATIONS AFFECTING MILITARY RESERVATIONS Land Use Policy for Fort Lewis, Yakima Training Center, and Camp Bonneville § 552.166 Recreational use. (a) Fort Lewis: (1) Individuals or... 32 National Defense 3 2013-07-01 2013-07-01 false Recreational use. 552.166 Section...

  20. 9 CFR 381.166 - Breaded products.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Breaded products. 381.166 Section 381.166 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY... CERTIFICATION POULTRY PRODUCTS INSPECTION REGULATIONS Definitions and Standards of Identity or Composition §...

  1. 40 CFR 166.3 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Definitions. 166.3 Section 166.3 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS EXEMPTION OF FEDERAL... to threatened or endangered species, beneficial organisms, or the environment; or (iv) Will...

  2. 21 CFR 211.166 - Stability testing.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 4 2013-04-01 2013-04-01 false Stability testing. 211.166 Section 211.166 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS: GENERAL CURRENT GOOD MANUFACTURING PRACTICE FOR FINISHED PHARMACEUTICALS Laboratory Controls §...

  3. 40 CFR 721.9511 - Silicic acid (H6SiO2O7), magnesium, strontium salt(1:1:2), dysprosium and europium-doped.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ..., strontium salt(1:1:2), dysprosium and europium-doped. 721.9511 Section 721.9511 Protection of Environment...), magnesium, strontium salt(1:1:2), dysprosium and europium-doped. (a) Chemical substance and significant new..., strontium salt(1:1:2), dysprosium and europium-doped. (PMN P-98-848; CAS No.181828-07-9) is subject...

  4. 40 CFR 721.9511 - Silicic acid (H6SiO2O7), magnesium, strontium salt(1:1:2), dysprosium and europium-doped.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ..., strontium salt(1:1:2), dysprosium and europium-doped. 721.9511 Section 721.9511 Protection of Environment...), magnesium, strontium salt(1:1:2), dysprosium and europium-doped. (a) Chemical substance and significant new..., strontium salt(1:1:2), dysprosium and europium-doped. (PMN P-98-848; CAS No.181828-07-9) is subject...

  5. Molecular beam epitaxy growth and characterization of dysprosium phosphide and dysprosium arsenide in gallium arsenide and gallium phosphide

    NASA Astrophysics Data System (ADS)

    Lee, Paul Piyawong

    The ability to grow thermally stable Schottky/ohmic contacts and buried, epitaxial metallic or semimetallic layers on semiconductors has many potential applications in novel device structures. Many rare earth group-V compounds with the sodium chloride structure possess the properties that make them potential candidates for stable contacts, buried layers, and other applications. In this work, two novel rare earth compounds, namely dysprosium phosphide (DyP) and dysprosium arsenide (DyAs) have been studied for high temperature ohmic/Schottky contacts to III-V semiconductors as well as for buried metal layers in semiconductor/metal/semiconductor structures. DyP and DyAs have been grown by molecular beam epitaxy on GaAs and GaP substrates. Both DyP and DyAs display metallic behavior and have room temperature resistivities of 8 x 10--5 and 1 x 10--4 Ocm, respectively. The electron concentrations for DyP and DyAs are about 4 x 1020 and 1 x 1021 cm--3, respectively. High quality DyP films as determined by XRD, AFM, and TEM can be achieved at a wide range of substrate temperatures (500°C to 600°C) with excess phosphorus pressure. Unlike most rare earth-group V compounds, DyP films are stable in air with no sign of oxidation. DyP films deposited on n-type GaAs and GaP exhibit Schottky behavior with room temperature barrier heights of 0.83 and 0.90 eV, respectively, with ideality factors close to unity and low reverse bias leakage current densities. These contacts are stable up to 250°C and 350°C for GaAs and GaP, respectively. DyAs films on the other hand, oxidize in air and display weak Schottky behavior on n-type GaAs. DyP has been grown as buried layers in both GaAs/DyP/GaAs and GaAs/DyP/GaP structures. Although high quality DyP layers have been achieved, the GaAs overlayers contain defects such as twins. The poor wetting of GaAs on DyP and the crystal symmetry between the two materials are responsible for the three-dimensional growth and the defects found in the Ga

  6. Dysprosium detector for neutron dosimetry in external beam radiotherapy

    NASA Astrophysics Data System (ADS)

    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.

  7. Anomalous Elastic Behavior in hcp- and Sm-Type Dysprosium

    SciTech Connect

    Tschauner, Oliver; Grubor-Urosevic, Ognjen; Dera, Przemyslaw; Mulcahy, Sean R.

    2012-04-11

    The compression behavior of elemental dysprosium in the hcp- and the Sm-type phases has been examined under hydrostatic pressure. Sm-type Dy has been found about 1% denser than the hcp phase. This increase in density is due to c-axis contraction in Sm-type Dy, whereas the a-axis even expands compared with the hcp-phase. Both the hcp- and the Sm-type phases show an inversion in the pressure derivative of the c/a ratio. For hcp-Dy this inversion is very sharp with minimal c/a at 2.5 GPa. At the same pressure, the compression behavior of hcp-Dy changes abruptly from dominantly c-axis compression to almost isotropic compression with slightly softer S{sub 11}. The bulk modulus increases at this point by a factor of {approx}2. Both hcp- and Sm-type Dy exhibit a crossover from highly anisotropic compression mostly along the c-axis to almost isotropic compression. We discuss these anomalies with respect to a possible Lifshitz transition and structural soft modes.

  8. 40 CFR 166.40 - Authorization.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.40... issue a crisis exemption in situations involving an unpredictable emergency situation when: (a)...

  9. 40 CFR 166.41 - Limitations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.41 Limitations. The crisis provisions may not be utilized to authorize a pesticide use if any of the...

  10. 40 CFR 166.40 - Authorization.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.40... issue a crisis exemption in situations involving an unpredictable emergency situation when: (a)...

  11. 40 CFR 166.41 - Limitations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.41 Limitations. The crisis provisions may not be utilized to authorize a pesticide use if any of the...

  12. 40 CFR 166.40 - Authorization.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.40... issue a crisis exemption in situations involving an unpredictable emergency situation when: (a)...

  13. 40 CFR 166.41 - Limitations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.41 Limitations. The crisis provisions may not be utilized to authorize a pesticide use if any of the...

  14. 40 CFR 166.40 - Authorization.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.40... issue a crisis exemption in situations involving an unpredictable emergency situation when: (a)...

  15. 40 CFR 166.41 - Limitations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.41 Limitations. The crisis provisions may not be utilized to authorize a pesticide use if any of the...

  16. 40 CFR 166.41 - Limitations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.41 Limitations. The crisis provisions may not be utilized to authorize a pesticide use if any of the...

  17. 40 CFR 166.40 - Authorization.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.40... issue a crisis exemption in situations involving an unpredictable emergency situation when: (a)...

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

    PubMed

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

    2016-09-01

    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. PMID:27460170

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

    PubMed

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

    2016-09-01

    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.

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

    NASA Astrophysics Data System (ADS)

    Watanabe, Y.

    2012-04-01

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

  1. Bose-Fermi mixtures of ultracold gases of dysprosium

    NASA Astrophysics Data System (ADS)

    Youn, Seo Ho

    Laser cooling and trapping of the most magnetic fermionic atom, dysprosium (Dy), may provide a framework to explore quantum liquid crystal (QLC) theory (Chapter 1). This thesis presents details of the Dy laser cooling and trapping apparatus including the laser systems at 421, 741, and 1064 nm, the ultra-high vacuum (UHV) chamber, and the computer control that has produced a magneto-optically (MOT) and magnetostatically (MT) trapped Dy gas (Chapters 3, 4, 5). Despite the fact that Dy has a complex energy level structure with nearly 140 metastable states (Chapter 2), Dy MOT at 421-nm transition with 32-MHz linewidth was realized without any rempumper, exploiting its large magnetic moment, which brought a strong magnetic confinement of metastable states of Dy. This unique MOT/MT dynamics is discussed and its quantitative measurements are shown in Chapter 6. When the Dy atoms dropped from the MOT were adsorptively imaged, it was observed that Dy MOT had a bimodal temperature distribution in contrast to the usual MOT described by a single temperature (Chapter 7). Such novel anisotropic sub-Doppler laser cooling of Dy, which breaks the symmetry in cooling, is due to Dy's large magnetic spin aligned along a strong axis of the quadrupole field of the MOT, and we further support this plausible conjecture with the velocity selective resonance (VSR) theory. The MOT at ˜1 mK was cooled to ˜ 10 muK by narrow-line cooling at 741 nm with a linewidth of 2 kHz, and we were able to load the optical dipole trap (ODT) at 1064 nm. By loading two isotopes of 164Dy and 163Dy in sequence to the MOT and narrow-line cooling them simultaneously, ultracold Bose-Fermi mixtures of Dy in the ODT were realized (Chapter 8). This thesis is concluded with a discussion of prospect on the Bose-Fermi mixtures of Dy.

  2. Observation of an intermediate phase in dysprosium near the Neel point by neutron diffraction

    SciTech Connect

    Bessergenev, V.G.; Gogava, V.V.; Kovalevskaya, Y.A.; Mandzhavidze, A.G.; Fedorov, V.M.; Shilo, S.I.

    1985-11-25

    The magnetic structure of dysprosium near the point of magnetic disordering has been studied as a function of the thermal history of the sample by neutron diffraction. An intermediate vortex phase appears during cooling from the paramagnetic phase and then converts into a helicoidal phase.

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

    NASA Astrophysics Data System (ADS)

    Rekha, G.; Tholkappiyan, R.; Vishista, K.; Hamed, Fathalla

    2016-11-01

    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 (Fe3+ and Fe2+) states for Fe ions and (Mn3+ and Mn2+) Mn ions analyzed in three ways of Fe 2p and Mn 2p spectra from the XPS analysis. With respect to Mn dopant in Dy3Fe5O12, 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 prepared samples were confirmed. Further, the role of dopant on the magnetic properties of the dysprosium ferrite nanoparticles was also observed from VSM which shows the ferromagnetic behavior. It was concluded that the magnetic properties of synthesized nanoparticles mainly depended on the oxidation state of elements, cationic distribution and crystallinity.

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

    NASA Astrophysics Data System (ADS)

    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.

  5. 9 CFR 166.10 - Licensing.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... person operating or desiring to operate a treatment facility for garbage that is to be treated and fed to... be fed to swine who would otherwise be required under this part to obtain a license to treat garbage only because it contains one or more of the items allowed to be fed to swine under § 166.2(a) of...

  6. 9 CFR 166.10 - Licensing.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... person operating or desiring to operate a treatment facility for garbage that is to be treated and fed to... be fed to swine who would otherwise be required under this part to obtain a license to treat garbage only because it contains one or more of the items allowed to be fed to swine under § 166.2(a) of...

  7. 9 CFR 166.10 - Licensing.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... person operating or desiring to operate a treatment facility for garbage that is to be treated and fed to... be fed to swine who would otherwise be required under this part to obtain a license to treat garbage only because it contains one or more of the items allowed to be fed to swine under § 166.2(a) of...

  8. 9 CFR 166.15 - State status.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... States prohibit the feeding of garbage to swine: Alabama, Delaware, Georgia, Idaho, Illinois, Indiana... Veterinarian in Charge, Animal and Plant Health Inspection Service, United States Department of Agiculture or... garbage to swine. Editorial Note: For Federal Register citations affecting § 166.15, see the List of...

  9. 9 CFR 166.15 - State status.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... States prohibit the feeding of garbage to swine: Alabama, Delaware, Georgia, Idaho, Illinois, Indiana... Veterinarian in Charge, Animal and Plant Health Inspection Service, United States Department of Agiculture or... garbage to swine. Editorial Note: For Federal Register citations affecting § 166.15, see the List of...

  10. 9 CFR 166.15 - State status.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... States prohibit the feeding of garbage to swine: Alabama, Delaware, Georgia, Idaho, Illinois, Indiana... Veterinarian in Charge, Animal and Plant Health Inspection Service, United States Department of Agiculture or... garbage to swine. Editorial Note: For Federal Register citations affecting § 166.15, see the List of...

  11. 34 CFR 668.166 - Excess cash.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... than Federal Perkins Loan Program funds, that an institution does not disburse to students or parents..., DEPARTMENT OF EDUCATION STUDENT ASSISTANCE GENERAL PROVISIONS Cash Management § 668.166 Excess cash. (a...) Consequences for maintaining excess cash. Upon a finding that an institution maintains excess cash for...

  12. 34 CFR 668.166 - Excess cash.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... than Federal Perkins Loan Program funds, that an institution does not disburse to students or parents..., DEPARTMENT OF EDUCATION STUDENT ASSISTANCE GENERAL PROVISIONS Cash Management § 668.166 Excess cash. (a...) Consequences for maintaining excess cash. Upon a finding that an institution maintains excess cash for...

  13. 34 CFR 668.166 - Excess cash.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... than Federal Perkins Loan Program funds, that an institution does not disburse to students or parents..., DEPARTMENT OF EDUCATION STUDENT ASSISTANCE GENERAL PROVISIONS Cash Management § 668.166 Excess cash. (a...) Consequences for maintaining excess cash. Upon a finding that an institution maintains excess cash for...

  14. 34 CFR 668.166 - Excess cash.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... than Federal Perkins Loan Program funds, that an institution does not disburse to students or parents..., DEPARTMENT OF EDUCATION STUDENT ASSISTANCE GENERAL PROVISIONS Cash Management § 668.166 Excess cash. (a...) Consequences for maintaining excess cash. Upon a finding that an institution maintains excess cash for...

  15. 34 CFR 668.166 - Excess cash.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... than Federal Perkins Loan Program funds, that an institution does not disburse to students or parents..., DEPARTMENT OF EDUCATION STUDENT ASSISTANCE GENERAL PROVISIONS Cash Management § 668.166 Excess cash. (a...) Consequences for maintaining excess cash. Upon a finding that an institution maintains excess cash for...

  16. 37 CFR 1.166 - Specimens.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... COMMERCE GENERAL RULES OF PRACTICE IN PATENT CASES National Processing Provisions Plant Patents § 1.166 Specimens. The applicant may be required to furnish specimens of the plant, or its flower or fruit, in a quantity and at a time in its stage of growth as may be designated, for study and inspection....

  17. 37 CFR 1.166 - Specimens.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... COMMERCE GENERAL RULES OF PRACTICE IN PATENT CASES National Processing Provisions Plant Patents § 1.166 Specimens. The applicant may be required to furnish specimens of the plant, or its flower or fruit, in a quantity and at a time in its stage of growth as may be designated, for study and inspection....

  18. 37 CFR 1.166 - Specimens.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... COMMERCE GENERAL RULES OF PRACTICE IN PATENT CASES National Processing Provisions Plant Patents § 1.166 Specimens. The applicant may be required to furnish specimens of the plant, or its flower or fruit, in a quantity and at a time in its stage of growth as may be designated, for study and inspection....

  19. 40 CFR 49.166 - Program overview.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... areas in Indian country (or “program”) consists of §§ 49.166 through 49.175. (b) What is the purpose of this program? This program has the following purposes: (1) It establishes a preconstruction permitting... major sources subject to this program comply with the provisions and requirements of part 51, Appendix...

  20. 40 CFR 49.166 - Program overview.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... areas in Indian country (or “program”) consists of §§ 49.166 through 49.175. (b) What is the purpose of this program? This program has the following purposes: (1) It establishes a preconstruction permitting... major sources subject to this program comply with the provisions and requirements of part 51, Appendix...

  1. 40 CFR 49.166 - Program overview.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... areas in Indian country (or “program”) consists of §§ 49.166 through 49.175. (b) What is the purpose of this program? This program has the following purposes: (1) It establishes a preconstruction permitting... major sources subject to this program comply with the provisions and requirements of part 51, appendix...

  2. 40 CFR 49.166 - Program overview.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... areas in Indian country (or “program”) consists of §§ 49.166 through 49.175. (b) What is the purpose of this program? This program has the following purposes: (1) It establishes a preconstruction permitting... major sources subject to this program comply with the provisions and requirements of part 51, Appendix...

  3. 37 CFR 1.166 - Specimens.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... COMMERCE GENERAL RULES OF PRACTICE IN PATENT CASES National Processing Provisions Plant Patents § 1.166 Specimens. The applicant may be required to furnish specimens of the plant, or its flower or fruit, in a quantity and at a time in its stage of growth as may be designated, for study and inspection....

  4. 32 CFR 552.166 - Recreational use.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Training Center, and Camp Bonneville § 552.166 Recreational use. (a) Fort Lewis: (1) Individuals or... directly to the I Corps Public Affairs Office (PAO). (b) Yakima Training Center: Access to the Yakima Training Center range complex for recreation requires application in writing to the Commander,...

  5. 32 CFR 552.166 - Recreational use.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Training Center, and Camp Bonneville § 552.166 Recreational use. (a) Fort Lewis: (1) Individuals or... directly to the I Corps Public Affairs Office (PAO). (b) Yakima Training Center: Access to the Yakima Training Center range complex for recreation requires application in writing to the Commander,...

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

    PubMed

    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.

  7. Effect of Yttrium doping on structural and magnetic properties of Dysprosium

    NASA Astrophysics Data System (ADS)

    Jena, Rudra Prasad; Baidya, Arunmay; Lakhani, Archana

    2016-11-01

    A comparative structural and magneto transport study has been performed on the Dysprosium (Dy) and Yttrium (Y) doped Dysprosium (Dy-Y) alloys in order to study the effect of Y concentration, temperature and magnetic field on the magnetic states and transitions of Dy-Y alloys. The magnetic state of Dy and Dy-Y alloys having lower Y substitutions change from Paramagnetic (PM) to Helimagnetic (HM) state via second order phase transition and from Helimagnetic state to Ferromagnetic (FM) state via first order phase transition. Small change in lattice parameters, strain and micro-strain is observed with X-ray diffraction on replacement with Y ions. Neel temperature and Curie temperature both show a decreasing trend on diluting Dy with non-magnetic Y in small concentrations. PM to HM and HM to FM transitions in the lower substitutional alloys discussed in this manuscript show a direct transition from PM to FM state at fields above 1.5 T.

  8. Technique for direct measurement of magnetic entropy of solids: Results for dysprosium titanium oxide

    NASA Technical Reports Server (NTRS)

    Flood, D. J.

    1974-01-01

    A measurement technique was devised which permits direct observation of the magnetic entropy of solids as a function of applied magnetic field. Measurements were made of the magnetic entropy, in the temperature range 2 to 20 K, of polycrystalline samples of dysprosium titanium oxide (Dy2Ti2O7) to determine its suitability for use as the working substance of a magnetic refrigerator. Magnetization measurements were also made at 4.2 K and below to provide additional information on the nature of the compound. The measurements indicated that crystalline electric fields perturbed the ground state of the dysprosium ions, removed the 16-fold degeneracy predicted by Hund's rules, and left only a twofold degeneracy in its place. A positive, temperature independent contribution to the magnetization was observed in the saturation region, which indicated that the doublet ground-state wave function was perturbed by a nearby unpopulated upper energy level.

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

    PubMed Central

    2010-01-01

    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. PMID:20672139

  10. Curious matrix effects: a computational, electron diffraction, and vibrational spectroscopic study of dysprosium triiodide.

    PubMed

    Varga, Zoltán; Groen, Cornelis Petrus; Kolonits, Mária; Hargittai, Magdolna

    2010-07-21

    The molecular and electronic structure of dysprosium triiodide, DyI(3), and its dimer, Dy(2)I(6), was determined by high level computations, gas-phase electron diffraction, and gas-phase infrared and matrix-isolation infrared and Raman spectroscopy. The free monomeric molecule is planar from all methods with an equilibrium bond length of 2.808(9) A; the thermal average bond length from electron diffraction is 2.828(6) A. The molecule forms complexes in the matrix-isolation experiments causing pyramidalisation of planar monomeric molecules. The likelihood of having both pyramidal and planar DyI(3) molecules in the matrix is discussed in order to explain certain features of the spectra. Our computations suggest that the dimer geometry depends on the occupation of the partially filled 4f orbitals. As this is the third molecule in the dysprosium trihalide series studied, trends in their electronic and molecular structures are presented and discussed.

  11. Low Temperature Magnetostrictive Strain Of Terfenol-D and Terbium Dysprosium

    NASA Astrophysics Data System (ADS)

    Graetz, Jason

    1998-03-01

    The goal of this project is to measure the magnetostrictive strain of Terfenol-D and Terbium Dysprosium at 300K and 77K. This involves the observation of the strain difference over a metamagnetic transition in Terfenol-D and a para- ferro-magnetic transition in Terbium Dysprosium. The experimental data is in agreement with general magnetostriction theory. This data is used in the construction of a prototype of a high-resolution magnetostrictive actuator. This device has been successfully tested at 300K with a minimum step size of 10nm. Low temperature devices of this nature have applicability to electron microscopy, Infrared cameras, and mirror positioning on low temperature space telescopes.

  12. Selective recognition of dysprosium(III) ions by enhanced chemiluminescence CdSe quantum dots.

    PubMed

    Hosseini, Morteza; Ganjali, Mohammad R; Vaezi, Zahra; Faridbod, Farnoush; Arabsorkhi, Batool; Sheikhha, Mohammad H

    2014-01-01

    The intensity of emitted light from CdSe quantum dots (QDs)-H2O2 is described as a novel chemiluminescence (CL) reaction for determination of dysprosium. This reaction is based on the catalytic effect of Dy(3+) ions, causing a significant increase in the light emission, as a result of the reaction of quantum dots (QDs) with hydrogen peroxide. In the optimum conditions, this method was satisfactorily described by linear calibration curve in the range of 8.3×10(-7)-5.0×10(-6)M, the detection limit of 6.0×10(-8)M, and the relative standard deviation for five determinations of 2.5×10(-6)M Dy(3+) 3.2%. The main experimental advantage of the proposed method is its selective to Dy(3+) ions compared with common coexisting cations, therefore, it was successfully applied for the determination of dysprosium ions in water samples.

  13. Repeat radiation synovectomy with dysprosium 165-ferric hydroxide macroaggregates in rheumatoid knees unresponsive to initial injection

    SciTech Connect

    Vella, M.; Zuckerman, J.D.; Shortkroff, S.; Venkatesan, P.; Sledge, C.B.

    1988-06-01

    Because of failure to fully respond to an initial intraarticular injection of dysprosium 165-ferric hydroxide macroaggregates, 17 patients with seropositive rheumatoid arthritis underwent repeat radiation synovectomy using this agent. Of the 13 patients who were evaluated 1 year later, 54% (7 knees) had good results, 31% (4 knees) had fair results, and 15% (2 knees) had poor results. The initial lack of significant benefit from radiation synovectomy did not appear to preclude a favorable response to a second injection.

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

    SciTech Connect

    Riley, M.A.; Brown, T.B.; Archer, D.E.

    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.

  15. 9 CFR 166.4 - Storage of garbage.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Storage of garbage. 166.4 Section 166.4 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.4 Storage of garbage....

  16. 9 CFR 166.4 - Storage of garbage.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 9 Animals and Animal Products 1 2012-01-01 2012-01-01 false Storage of garbage. 166.4 Section 166.4 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.4 Storage of garbage....

  17. 9 CFR 166.4 - Storage of garbage.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Storage of garbage. 166.4 Section 166.4 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.4 Storage of garbage....

  18. 25 CFR 166.312 - Is a conservation plan required?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false Is a conservation plan required? 166.312 Section 166.312... Operations Management Management Plans and Environmental Compliance § 166.312 Is a conservation plan required? A conservation plan must be developed for each permit with the permittee and approved by us prior...

  19. 25 CFR 166.312 - Is a conservation plan required?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true Is a conservation plan required? 166.312 Section 166.312... Operations Management Management Plans and Environmental Compliance § 166.312 Is a conservation plan required? A conservation plan must be developed for each permit with the permittee and approved by us prior...

  20. 25 CFR 166.312 - Is a conservation plan required?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false Is a conservation plan required? 166.312 Section 166.312... Operations Management Management Plans and Environmental Compliance § 166.312 Is a conservation plan required? A conservation plan must be developed for each permit with the permittee and approved by us prior...

  1. 25 CFR 166.312 - Is a conservation plan required?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Is a conservation plan required? 166.312 Section 166.312... Operations Management Management Plans and Environmental Compliance § 166.312 Is a conservation plan required? A conservation plan must be developed for each permit with the permittee and approved by us prior...

  2. 45 CFR 16.6 - Who represents the parties.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 1 2011-10-01 2011-10-01 false Who represents the parties. 16.6 Section 16.6... DEPARTMENTAL GRANT APPEALS BOARD § 16.6 Who represents the parties. The appellant's notice of appeal, or the...., the federal party to the appeal) should specify the name, address and telephone number of...

  3. 25 CFR 166.907 - Who can be an intern?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Who can be an intern? 166.907 Section 166.907 Indians..., Education Assistance, Recruitment, and Training § 166.907 Who can be an intern? (a) Natural resources or... bonus pay incentive, up to 25 percent (%) of the intern's base salary, may be provided...

  4. 25 CFR 166.907 - Who can be an intern?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true Who can be an intern? 166.907 Section 166.907 Indians..., Education Assistance, Recruitment, and Training § 166.907 Who can be an intern? (a) Natural resources or... bonus pay incentive, up to 25 percent (%) of the intern's base salary, may be provided...

  5. 25 CFR 166.907 - Who can be an intern?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Who can be an intern? 166.907 Section 166.907 Indians..., Education Assistance, Recruitment, and Training § 166.907 Who can be an intern? (a) Natural resources or... bonus pay incentive, up to 25 percent (%) of the intern's base salary, may be provided...

  6. 25 CFR 166.907 - Who can be an intern?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false Who can be an intern? 166.907 Section 166.907 Indians..., Education Assistance, Recruitment, and Training § 166.907 Who can be an intern? (a) Natural resources or... bonus pay incentive, up to 25 percent (%) of the intern's base salary, may be provided...

  7. 25 CFR 166.907 - Who can be an intern?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false Who can be an intern? 166.907 Section 166.907 Indians..., Education Assistance, Recruitment, and Training § 166.907 Who can be an intern? (a) Natural resources or... bonus pay incentive, up to 25 percent (%) of the intern's base salary, may be provided...

  8. 21 CFR 166.40 - Labeling of margarine.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 2 2012-04-01 2012-04-01 false Labeling of margarine. 166.40 Section 166.40 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION MARGARINE General Provisions § 166.40 Labeling of margarine. The Federal Food,...

  9. 21 CFR 166.40 - Labeling of margarine.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 2 2013-04-01 2013-04-01 false Labeling of margarine. 166.40 Section 166.40 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION MARGARINE General Provisions § 166.40 Labeling of margarine. The Federal Food,...

  10. 9 CFR 166.12 - Cancellation of licenses.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Cancellation of licenses. 166.12 Section 166.12 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.12 Cancellation...

  11. 9 CFR 166.6 - Swine feeding area standards.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Swine feeding area standards. 166.6 Section 166.6 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.6 Swine feeding...

  12. 9 CFR 166.4 - Storage of garbage.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Storage of garbage. 166.4 Section 166.4 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.4 Storage of garbage....

  13. 9 CFR 166.4 - Storage of garbage.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Storage of garbage. 166.4 Section 166.4 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.4 Storage of garbage....

  14. 9 CFR 166.12 - Cancellation of licenses.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Cancellation of licenses. 166.12 Section 166.12 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.12 Cancellation...

  15. 9 CFR 166.8 - Vehicles used to transport garbage.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Vehicles used to transport garbage. 166.8 Section 166.8 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.8...

  16. 9 CFR 166.8 - Vehicles used to transport garbage.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Vehicles used to transport garbage. 166.8 Section 166.8 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.8...

  17. 9 CFR 166.6 - Swine feeding area standards.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Swine feeding area standards. 166.6 Section 166.6 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.6 Swine feeding...

  18. 26 CFR 1.166-5 - Nonbusiness debts.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 26 Internal Revenue 2 2011-04-01 2011-04-01 false Nonbusiness debts. 1.166-5 Section 1.166-5...) INCOME TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-5 Nonbusiness debts. (a) Allowance of deduction as capital loss. (1) The loss resulting from any nonbusiness...

  19. 26 CFR 1.166-5 - Nonbusiness debts.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Nonbusiness debts. 1.166-5 Section 1.166-5...) INCOME TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-5 Nonbusiness debts. (a) Allowance of deduction as capital loss. (1) The loss resulting from any nonbusiness...

  20. 25 CFR 166.305 - When is grazing capacity determined?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false When is grazing capacity determined? 166.305 Section 166.305 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Land and Operations Management § 166.305 When is grazing capacity determined? Before we grant, modify,...

  1. 29 CFR 1910.166-1910.168 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 5 2014-07-01 2014-07-01 false 1910.166-1910.168 Section 1910.166-1910.168 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Compressed Gas and Compressed Air Equipment §§ 1910.166-1910.168...

  2. 29 CFR 1910.166-1910.168 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 5 2013-07-01 2013-07-01 false 1910.166-1910.168 Section 1910.166-1910.168 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Compressed Gas and Compressed Air Equipment §§ 1910.166-1910.168...

  3. 29 CFR 1910.166-1910.168 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 5 2012-07-01 2012-07-01 false 1910.166-1910.168 Section 1910.166-1910.168 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Compressed Gas and Compressed Air Equipment §§ 1910.166-1910.168...

  4. 29 CFR 1910.166-1910.168 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 5 2011-07-01 2011-07-01 false 1910.166-1910.168 Section 1910.166-1910.168 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Compressed Gas and Compressed Air Equipment §§ 1910.166-1910.168...

  5. 29 CFR 1910.166-1910.168 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 5 2010-07-01 2010-07-01 false 1910.166-1910.168 Section 1910.166-1910.168 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Compressed Gas and Compressed Air Equipment §§ 1910.166-1910.168...

  6. 25 CFR 166.312 - Is a conservation plan required?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Is a conservation plan required? 166.312 Section 166.312... Operations Management Management Plans and Environmental Compliance § 166.312 Is a conservation plan required? A conservation plan must be developed for each permit with the permittee and approved by us prior...

  7. 26 CFR 1.166-1 - Bad debts.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Bad debts. 1.166-1 Section 1.166-1 Internal... TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-1 Bad debts. (a... shall be allowed in respect of bad debts owed to the taxpayer. For this purpose, bad debts...

  8. 26 CFR 1.166-4 - Reserve for bad debts.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 26 Internal Revenue 2 2012-04-01 2012-04-01 false Reserve for bad debts. 1.166-4 Section 1.166-4...) INCOME TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-4 Reserve for bad debts. (a) Allowance of deduction. A taxpayer who has established the reserve method of treating...

  9. 26 CFR 1.166-1 - Bad debts.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 26 Internal Revenue 2 2013-04-01 2013-04-01 false Bad debts. 1.166-1 Section 1.166-1 Internal... TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-1 Bad debts. (a... shall be allowed in respect of bad debts owed to the taxpayer. For this purpose, bad debts...

  10. 26 CFR 1.166-4 - Reserve for bad debts.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 26 Internal Revenue 2 2013-04-01 2013-04-01 false Reserve for bad debts. 1.166-4 Section 1.166-4...) INCOME TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-4 Reserve for bad debts. (a) Allowance of deduction. A taxpayer who has established the reserve method of treating...

  11. 26 CFR 1.166-1 - Bad debts.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 26 Internal Revenue 2 2011-04-01 2011-04-01 false Bad debts. 1.166-1 Section 1.166-1 Internal... TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-1 Bad debts. (a... shall be allowed in respect of bad debts owed to the taxpayer. For this purpose, bad debts...

  12. 26 CFR 1.166-4 - Reserve for bad debts.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 26 Internal Revenue 2 2014-04-01 2014-04-01 false Reserve for bad debts. 1.166-4 Section 1.166-4...) INCOME TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-4 Reserve for bad debts. (a) Allowance of deduction. A taxpayer who has established the reserve method of treating...

  13. 26 CFR 1.166-1 - Bad debts.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 26 Internal Revenue 2 2012-04-01 2012-04-01 false Bad debts. 1.166-1 Section 1.166-1 Internal... TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-1 Bad debts. (a... shall be allowed in respect of bad debts owed to the taxpayer. For this purpose, bad debts...

  14. 26 CFR 1.166-1 - Bad debts.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 26 Internal Revenue 2 2014-04-01 2014-04-01 false Bad debts. 1.166-1 Section 1.166-1 Internal... TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-1 Bad debts. (a... shall be allowed in respect of bad debts owed to the taxpayer. For this purpose, bad debts...

  15. 26 CFR 1.166-4 - Reserve for bad debts.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 26 Internal Revenue 2 2011-04-01 2011-04-01 false Reserve for bad debts. 1.166-4 Section 1.166-4...) INCOME TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-4 Reserve for bad debts. (a) Allowance of deduction. A taxpayer who has established the reserve method of treating...

  16. 26 CFR 1.166-4 - Reserve for bad debts.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Reserve for bad debts. 1.166-4 Section 1.166-4...) INCOME TAXES (CONTINUED) Itemized Deductions for Individuals and Corporations § 1.166-4 Reserve for bad debts. (a) Allowance of deduction. A taxpayer who has established the reserve method of treating...

  17. 25 CFR 166.904 - What is agriculture education outreach?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false What is agriculture education outreach? 166.904 Section 166.904 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Agriculture Education, Education Assistance, Recruitment, and Training § 166.904 What is agriculture education outreach? (a) We will establish...

  18. 9 CFR 166.12 - Cancellation of licenses.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 9 Animals and Animal Products 1 2012-01-01 2012-01-01 false Cancellation of licenses. 166.12 Section 166.12 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.12 Cancellation...

  19. 9 CFR 166.12 - Cancellation of licenses.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Cancellation of licenses. 166.12 Section 166.12 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.12 Cancellation...

  20. 9 CFR 166.8 - Vehicles used to transport garbage.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 9 Animals and Animal Products 1 2012-01-01 2012-01-01 false Vehicles used to transport garbage. 166.8 Section 166.8 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.8...

  1. 9 CFR 166.12 - Cancellation of licenses.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Cancellation of licenses. 166.12 Section 166.12 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.12 Cancellation...

  2. 25 CFR 166.800 - What is trespass?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false What is trespass? 166.800 Section 166.800 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Trespass § 166.800 What is trespass? Under this part, trespass is any unauthorized occupancy, use of, or action on...

  3. 25 CFR 166.313 - Is environmental compliance required?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... on Environmental Quality (40 CFR part 1500), and applicable tribal laws and regulations. Conservation... 25 Indians 1 2014-04-01 2014-04-01 false Is environmental compliance required? 166.313 Section 166... and Operations Management Management Plans and Environmental Compliance § 166.313 Is...

  4. 25 CFR 166.800 - What is trespass?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false What is trespass? 166.800 Section 166.800 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Trespass § 166.800 What is trespass? Under this part, trespass is any unauthorized occupancy, use of, or action on...

  5. 25 CFR 166.313 - Is environmental compliance required?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... on Environmental Quality (40 CFR part 1500), and applicable tribal laws and regulations. Conservation... 25 Indians 1 2013-04-01 2013-04-01 false Is environmental compliance required? 166.313 Section 166... and Operations Management Management Plans and Environmental Compliance § 166.313 Is...

  6. 33 CFR 166.500 - Areas along the Atlantic Coast.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Areas along the Atlantic Coast. 166.500 Section 166.500 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.500 Areas along the Atlantic Coast. (a) Purpose. Fairways, as described in this section...

  7. 33 CFR 166.500 - Areas along the Atlantic Coast.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Areas along the Atlantic Coast. 166.500 Section 166.500 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.500 Areas along the Atlantic Coast. (a) Purpose. Fairways, as described in this section...

  8. 33 CFR 166.500 - Areas along the Atlantic Coast.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Areas along the Atlantic Coast. 166.500 Section 166.500 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.500 Areas along the Atlantic Coast. (a) Purpose. Fairways, as described in this section...

  9. 33 CFR 166.500 - Areas along the Atlantic Coast.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Areas along the Atlantic Coast. 166.500 Section 166.500 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.500 Areas along the Atlantic Coast. (a) Purpose. Fairways, as described in this section...

  10. 33 CFR 166.500 - Areas along the Atlantic Coast.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Areas along the Atlantic Coast. 166.500 Section 166.500 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.500 Areas along the Atlantic Coast. (a) Purpose. Fairways, as described in this section...

  11. 17 CFR 166.5 - Dispute settlement procedures.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    .... 166.5 Section 166.5 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION CUSTOMER PROTECTION RULES § 166.5 Dispute settlement procedures. (a) Definitions. (1) The term claim or grievance as... delivery or commodity option. (2) The term customer as used in this section includes an option customer...

  12. 9 CFR 166.8 - Vehicles used to transport garbage.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Vehicles used to transport garbage. 166.8 Section 166.8 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.8 Vehicles used to transport garbage. Vehicles used by...

  13. 9 CFR 166.8 - Vehicles used to transport garbage.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Vehicles used to transport garbage. 166.8 Section 166.8 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.8 Vehicles used to transport garbage. Vehicles used by...

  14. 46 CFR 166.01 - Approval of nautical school ships.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Approval of nautical school ships. 166.01 Section 166.01... OF NAUTICAL SCHOOL SHIPS § 166.01 Approval of nautical school ships. (a) Under 46 U.S.C. 7315... documents. (b) It has been made to appear to the satisfaction of the Commandant that the school...

  15. 46 CFR 166.01 - Approval of nautical school ships.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Approval of nautical school ships. 166.01 Section 166.01... OF NAUTICAL SCHOOL SHIPS § 166.01 Approval of nautical school ships. (a) Under 46 U.S.C. 7315... documents. (b) It has been made to appear to the satisfaction of the Commandant that the school...

  16. 46 CFR 166.01 - Approval of nautical school ships.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Approval of nautical school ships. 166.01 Section 166.01... OF NAUTICAL SCHOOL SHIPS § 166.01 Approval of nautical school ships. (a) Under 46 U.S.C. 7315... documents. (b) It has been made to appear to the satisfaction of the Commandant that the school...

  17. 46 CFR 166.01 - Approval of nautical school ships.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Approval of nautical school ships. 166.01 Section 166.01... OF NAUTICAL SCHOOL SHIPS § 166.01 Approval of nautical school ships. (a) Under 46 U.S.C. 7315... documents. (b) It has been made to appear to the satisfaction of the Commandant that the school...

  18. 46 CFR 166.01 - Approval of nautical school ships.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Approval of nautical school ships. 166.01 Section 166.01... OF NAUTICAL SCHOOL SHIPS § 166.01 Approval of nautical school ships. (a) Under 46 U.S.C. 7315... documents. (b) It has been made to appear to the satisfaction of the Commandant that the school...

  19. Synovectomy of the rheumatoid knee using intra-articular injection of dysprosium-165-ferric hydroxide macroaggregates

    SciTech Connect

    Sledge, C.B.; Zuckerman, J.D.; Shortkroff, S.; Zalutsky, M.R.; Venkatesan, P.; Snyder, M.A.; Barrett, W.P.

    1987-09-01

    One hundred and eleven patients who had seropositive rheumatoid arthritis and persistent synovitis of the knee were treated with intra-articular injection of 270 millicuries of dysprosium-165 bound to ferric hydroxide macroaggregates. A two-year follow-up was available for fifty-nine of the treated knees. Thirty-nine had a good result; nine, a fair result; and eleven, a poor result. Of the twenty-five knees that had Stage-I radiographic changes, nineteen had a good result. Of the thirty-four knees that had Stage-II radiographic changes, twenty showed a good result. Systemic spread of the radioactivity from the injected joint was minimum. The mean whole-body dose was calculated to be 0.3 rad and that to the liver twenty-four hours after injection, 3.2 rads. The results indicated that dysprosium-165-ferric hydroxide macroaggregate is an effective agent for performing radiation synovectomy, particularly in knees that have Stage-I radiographic changes. Because of the minimum rate of systemic spread of the dysprosium-165, it offers a definite advantage over agents that previously have been used.

  20. Physico-chemical and NMR relaxometric characterization of gadolinium hydroxide and dysprosium oxide nanoparticles

    NASA Astrophysics Data System (ADS)

    Gossuin, Yves; Hocq, Aline; Vuong, Quoc Lam; Disch, Sabrina; Hermann, Raphaël P.; Gillis, Pierre

    2008-11-01

    Gadolinium hydroxide and dysprosium oxide nanoparticles, which constitute a new interesting class of magnetic nanoparticles, are characterized by different methods, using x-ray diffraction, magnetometry and NMR relaxometry at multiple fields. The rod-like particles are first shown to have a simple paramagnetic behavior, like the bulk compound, without any influence of the nanometric size of the particles. Because of their paramagnetic moment, these particles considerably shorten water relaxation times, especially the transverse relaxation time at high fields. The relaxation induced by gadolinium hydroxide particles is due to a proton exchange between the particle surface and bulk water, while the transverse relaxation caused by dysprosium oxide particles is governed by the diffusion of water protons around the magnetized particles. 1/T2 increases linearly with the magnetic field for gadolinium hydroxide particles while a quadratic increase is observed for dysprosium oxide nanoparticles. The relaxation results are compared with those from previous studies and interpreted using different theories for the relaxation induced by magnetic particles.

  1. The synthesis, structure, magnetic and luminescent properties of a new tetranuclear dysprosium (III) cluster

    SciTech Connect

    Chen, Yen-Han; Tsai, Yun-Fan; Lee, Gene-Hsian; Yang, En-Che

    2012-01-15

    The synthesis and characterization of [Dy{sub 4}(dhampH{sub 3}){sub 4}(NO{sub 3}){sub 2}](NO{sub 3}){sub 2} (1), a new tetranuclear dysprosium (III) complex, is described. The compound was characterized by its X-ray structure, magnetic properties as well as the luminescent spectra. The compound crystallizes in a P1-bar space group with a zig-zag linear form of geometry. The ac magnetic susceptibilities of the molecule indicate that it is a magnetic molecule with a slow magnetization relaxation. The molecule also exhibits an emission spectrum that was confirmed to be ligand based. These results indicate that this molecule has both a slow magnetization relaxation (that could be potentially a SMM) and luminescent properties. - Graphical Abstract: A new tetranuclear dysprosium (III) complex [Dy{sub 4}(dhampH{sub 3}){sub 4}(NO{sub 3}){sub 2}](NO{sub 3}){sub 2} is synthesized and reported in this paper. This molecule has luminescence and can potentially act as a SMM. Highlights: Black-Right-Pointing-Pointer A new designed ligand (dhampH{sub 5}) was syntheisized. Black-Right-Pointing-Pointer A new tetra-dysprosium cluster [Dy{sub 4}(dhampH{sub 3}){sub 4}(NO{sub 3}){sub 2}](NO{sub 3}){sub 2} was made. Black-Right-Pointing-Pointer Slow magnetization relaxation phenomenon was observed. Black-Right-Pointing-Pointer Ligand-based luminescence was observed.

  2. Novel Thermal Effects at the First Order Magnetic Phase Transition in Erbium, and a Comparison with Dysprosium

    SciTech Connect

    Gschneidner, K.A. Jr.; Pecharsky, V.K.; Fort, D.

    1997-06-01

    In low temperature studies of ultrapure erbium (and dysprosium) we have discovered unusual thermal effects at the first order magnetic transformation of erbium ({congruent} 19K). These include (1)superheating (i.e., {ital the metal is colder after heat has been added to it than before the heat pulse }), (2)supercooling, and (3)the existence of metastable intermediate phases during this phase transformation in erbium (four on heating and two on cooling). In comparison, dysprosium exhibits both superheating and supercooling, but no intermediate metastable phases are observed. Furthermore, none of these effects are observed in less pure metals. {copyright} {ital 1997} {ital The American Physical Society}

  3. Far-infrared spectra of dysprosium doped yttrium aluminum garnet nanopowder

    NASA Astrophysics Data System (ADS)

    Trajić, J.; Rabasović, M. S.; Savić-Šević, S.; Ševic, D.; Babić, B.; Romčević, M.; Ristić-Djurović, J. L.; Paunović, N.; Križan, J.; Romčević, N.

    2016-07-01

    The solution combustion synthesis was used to prepare nanopowders of yttrium aluminum garnet (YAG) and YAG doped with dysprosium ions, Dy3+, (YAG:Dy). The morphology, specific surface area, texture, and optical properties of the prepared materials were studied by the means of scanning electron microscopy (SEM), nitrogen adsorption method, and far-infrared spectroscopy at room temperature in the spectral region between 80 and 600 cm-1. It was established that all the examined samples were microporous. The Maxwell-Garnet formula was used to model dielectric function of YAG and YAG:Dy nanopowders as mixtures of homogenous spherical inclusions in air.

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

    SciTech Connect

    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.

  5. FTIR and EPR spectroscopic investigation of calcium-silicate glasses with iron and dysprosium

    NASA Astrophysics Data System (ADS)

    Eniu, D.; Gruian, C.; Vanea, E.; Patcas, L.; Simon, V.

    2015-03-01

    The sol-gel derived 50SiO2ṡ30CaOṡ10Fe2O3ṡ10Dy2O3 system was subjected to heat treatments at 500, 800 and 1200 °C in order to obtain crystalline phases of interest for biomedical applications. The structural changes were investigated by Fourier transform infrared spectroscopy (FTIR) and electron paramagnetic resonance (EPR). Both FTIR and EPR results support the development of wollastonite, hematite and magnetite crystalline phases desirable for samples bioactivity and heating possibility for hyperthermia treatment. Dysprosium addition was considered for subsequent radioactivation of the samples that could extend their application to thermoradiotherapy.

  6. Synthesis, crystal structure and magnetic properties of a novel heterobimetallic rhenium(IV)-dysprosium(III) chain.

    PubMed

    Pejo, Carolina; Guedes, Guilherme P; Novak, Miguel A; Speziali, Nivaldo L; Chiozzone, Raúl; Julve, Miguel; Lloret, Francesc; Vaz, Maria G F; González, Ricardo

    2015-06-01

    The use of the mononuclear rhenium(IV) precursor [ReBr5 (H2 pydc)](-) (H2 pydc=3,5-pyridinedicarboxylic acid) as a metalloligand towards dysprosium(III) afforded the first heterobimetallic Re(IV) -Dy(III) complex. Crystal structures and static and dynamic magnetic properties of both rhenium-containing species are reported herein. The 5d-4f compound shows an extended 1D structure and the AC magnetic measurements reveal frequency dependence at low temperature suggesting slow relaxation of the magnetization.

  7. Structure of dimeric dysprosium (III) d-tartrate of 2:2 composition in aqueous solution

    SciTech Connect

    Chevela, V.V.; Vul`fson, S.G.; Sal`nikov, Yu.I.

    1994-12-20

    The molar constant of paramagnetic birefringence of dimeric dysprosium d-tartrate Dy{sub 2}(d-L){sup 2{minus}}{sub 2} (d-L{sup 4{minus}} is a deprotonated molecule of tartaric acid) was determined experimentally and by mathematical simulation. The structures of the ligand and hydrate environment in Dy{sub 2}(d-L){sup 2{minus}}{sub 2} were simulated by the molecular mechanics method (Dashevskii-Plyamovatyi model). Results consistent with the experimental data can be obtained only when coordination of Na{sup +} is taken into account. 6 refs., 4 figs., 8 tabs.

  8. Brightness temperature for 166 radio sources

    NASA Astrophysics Data System (ADS)

    Fan, Jun-Hui; Huang, Yong; Yuan, Yu-Hai; Yang, Jiang-He; Liu, Yi; Tao, Jun; Gao, Ying; Hua, Tong-Xu; Lin, Rui-Guang; Zhang, Jiang-Shui; Zhang, Jing-Yi; Qin, Yi-Ping

    2009-07-01

    Using the database of the University of Michigan Radio Astronomy Observatory (UMRAO) at three radio frequencies (4.8, 8 and 14.5 GHz), we determined the short-term variability timescales for 166 radio sources. The timescales are 0.15 d (2007+777) to 176.17 d (0528-250) with an average timescale of Δtobs = 17.1 ± 16.5 d for the whole sample. The timescales are used to calculate the brightness temperatures, TB. The value of log TB is in the range of log TB = 10.47 to 19.06 K. In addition, we also estimated the boosting factor for the sources. The correlation between the polarization and the Doppler factor is also discussed.

  9. Proton Sensing of CLC-0 Mutant E166D

    PubMed Central

    Traverso, Sonia; Zifarelli, Giovanni; Aiello, Rita; Pusch, Michael

    2006-01-01

    CLC Cl− channels are homodimers in which each subunit has a proper pore and a (fast) gate. An additional slow gate acts on both pores. A conserved glutamate (E166 in CLC-0) is a major determinant of gating in CLC-0 and is crucially involved in Cl−/H+ antiport of CLC-ec1, a CLC of known structure. We constructed tandem dimers with one wild-type (WT) and one mutant subunit (E166A or E166D) to show that these mutations of E166 specifically alter the fast gate of the pore to which they belong without effect on the fast gate of the neighboring pore. In addition both mutations activate the common slow gate. E166A pores have a large, voltage-independent open probability of the fast gate (popen), whereas popen of E166D pores is dramatically reduced. Similar to WT, popen of E166D was increased by lowering pHint. At negative voltages, E166D presents a persistent inward current that is blocked by p-chlorophenoxy-acetic acid (CPA) and increased at low pHext. The pHext dependence of the persistent current is analogous to a similar steady inward current in WT CLC-0. Surprisingly, however, the underlying unitary conductance of the persistent current in E166D is about an order of magnitude smaller than that of the transient deactivating inward Cl− current. Collectively, our data support the possibility that the mutated CLC-0 channel E166D can assume two distinct open states. Voltage-independent protonation of D166 from the outside favors a low conductance state, whereas protonation from the inside favors the high conductance state. PMID:16380443

  10. Treatment of rheumatoid synovitis of the knee with intraarticular injection of dysprosium 165-ferric hydroxide macroaggregates

    SciTech Connect

    Sledge, C.B.; Zuckerman, J.D.; Zalutsky, M.R.; Atcher, R.W.; Shortkroff, S.; Lionberger, D.R.; Rose, H.A.; Hurson, B.J.; Lankenner, P.A. Jr.; Anderson, R.J.

    1986-02-01

    One hundred eight knees of 93 patients with seropositive rheumatoid arthritis and persistent synovitis of the knee were treated with an intraarticular injection of 270 mCi of dysprosium 165 bound to ferric hydroxide macroaggregate. Leakage of radioactivity from the injected joint was minimal. Mean leakage to the venous blood 3 hours after injection was 0.11% of the injected dose; this corresponds to a mean whole body dose of 0.2 rads. Mean leakage to the liver 24 hours after injection was 0.64% of the injected dose; this corresponds to a mean liver dose of 3.2 rads. In 7 additional patients examined, there was negligible or near negligible activity found in the draining inguinal lymph nodes. One-year followup was possible for 74 knees (63 patients). Sixty-one percent of the knees had good results, 23% had fair results, and 16% had poor results. There was a direct correlation between the radiographic stage and response to treatment. In knees with stage I radiographic changes, 72% showed good results; 93% showed improvement. In knees with stage II changes, 59% showed good results; 81% showed improvement. These preliminary results indicate that dysprosium 165-ferric hydroxide macroaggregate is an effective agent for radiation synovectomy. The low leakage rates observed offer a definite advantage over agents previously used.

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

    PubMed

    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. PMID:27483199

  12. Influencing the properties of dysprosium single-molecule magnets with phosphorus donor ligands.

    PubMed

    Pugh, Thomas; Tuna, Floriana; Ungur, Liviu; Collison, David; McInnes, Eric J L; Chibotaru, Liviu F; Layfield, Richard A

    2015-01-01

    Single-molecule magnets are a type of coordination compound that can retain magnetic information at low temperatures. Single-molecule magnets based on lanthanides have accounted for many important advances, including systems with very large energy barriers to reversal of the magnetization, and a di-terbium complex that displays magnetic hysteresis up to 14 K and shows strong coercivity. Ligand design is crucial for the development of new single-molecule magnets: organometallic chemistry presents possibilities for using unconventional ligands, particularly those with soft donor groups. Here we report dysprosium single-molecule magnets with neutral and anionic phosphorus donor ligands, and show that their properties change dramatically when varying the ligand from phosphine to phosphide to phosphinidene. A phosphide-ligated, trimetallic dysprosium single-molecule magnet relaxes via the second-excited Kramers' doublet, and, when doped into a diamagnetic matrix at the single-ion level, produces a large energy barrier of 256 cm(-1) and magnetic hysteresis up to 4.4 K. PMID:26130418

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

    PubMed

    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.

  14. Influencing the properties of dysprosium single-molecule magnets with phosphorus donor ligands.

    PubMed

    Pugh, Thomas; Tuna, Floriana; Ungur, Liviu; Collison, David; McInnes, Eric J L; Chibotaru, Liviu F; Layfield, Richard A

    2015-07-01

    Single-molecule magnets are a type of coordination compound that can retain magnetic information at low temperatures. Single-molecule magnets based on lanthanides have accounted for many important advances, including systems with very large energy barriers to reversal of the magnetization, and a di-terbium complex that displays magnetic hysteresis up to 14 K and shows strong coercivity. Ligand design is crucial for the development of new single-molecule magnets: organometallic chemistry presents possibilities for using unconventional ligands, particularly those with soft donor groups. Here we report dysprosium single-molecule magnets with neutral and anionic phosphorus donor ligands, and show that their properties change dramatically when varying the ligand from phosphine to phosphide to phosphinidene. A phosphide-ligated, trimetallic dysprosium single-molecule magnet relaxes via the second-excited Kramers' doublet, and, when doped into a diamagnetic matrix at the single-ion level, produces a large energy barrier of 256 cm(-1) and magnetic hysteresis up to 4.4 K.

  15. Influencing the properties of dysprosium single-molecule magnets with phosphorus donor ligands

    PubMed Central

    Pugh, Thomas; Tuna, Floriana; Ungur, Liviu; Collison, David; McInnes, Eric J.L.; Chibotaru, Liviu F.; Layfield, Richard A.

    2015-01-01

    Single-molecule magnets are a type of coordination compound that can retain magnetic information at low temperatures. Single-molecule magnets based on lanthanides have accounted for many important advances, including systems with very large energy barriers to reversal of the magnetization, and a di-terbium complex that displays magnetic hysteresis up to 14 K and shows strong coercivity. Ligand design is crucial for the development of new single-molecule magnets: organometallic chemistry presents possibilities for using unconventional ligands, particularly those with soft donor groups. Here we report dysprosium single-molecule magnets with neutral and anionic phosphorus donor ligands, and show that their properties change dramatically when varying the ligand from phosphine to phosphide to phosphinidene. A phosphide-ligated, trimetallic dysprosium single-molecule magnet relaxes via the second-excited Kramers' doublet, and, when doped into a diamagnetic matrix at the single-ion level, produces a large energy barrier of 256 cm−1 and magnetic hysteresis up to 4.4 K. PMID:26130418

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

    PubMed

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

    2012-06-01

    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.

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

    PubMed

    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. PMID:26728975

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

    PubMed

    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.

  19. 25 CFR 166.904 - What is agriculture education outreach?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false What is agriculture education outreach? 166.904 Section... Agriculture Education, Education Assistance, Recruitment, and Training § 166.904 What is agriculture education outreach? (a) We will establish and maintain an agriculture education outreach program for Indian...

  20. 10 CFR 72.166 - Handling, storage, and shipping control.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 2 2012-01-01 2012-01-01 false Handling, storage, and shipping control. 72.166 Section 72.166 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR THE INDEPENDENT STORAGE OF SPENT NUCLEAR FUEL, HIGH-LEVEL RADIOACTIVE WASTE, AND REACTOR-RELATED GREATER THAN CLASS...

  1. 42 CFR 440.166 - Nurse practitioner services.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 4 2011-10-01 2011-10-01 false Nurse practitioner services. 440.166 Section 440... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Definitions § 440.166 Nurse practitioner services. (a) Definition of nurse practitioner services. Nurse practitioner services means services...

  2. 42 CFR 440.166 - Nurse practitioner services.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 4 2013-10-01 2013-10-01 false Nurse practitioner services. 440.166 Section 440... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Definitions § 440.166 Nurse practitioner services. (a) Definition of nurse practitioner services. Nurse practitioner services means services...

  3. 42 CFR 440.166 - Nurse practitioner services.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 4 2010-10-01 2010-10-01 false Nurse practitioner services. 440.166 Section 440... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Definitions § 440.166 Nurse practitioner services. (a) Definition of nurse practitioner services. Nurse practitioner services means services...

  4. 42 CFR 440.166 - Nurse practitioner services.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 4 2012-10-01 2012-10-01 false Nurse practitioner services. 440.166 Section 440... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Definitions § 440.166 Nurse practitioner services. (a) Definition of nurse practitioner services. Nurse practitioner services means services...

  5. 42 CFR 440.166 - Nurse practitioner services.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 4 2014-10-01 2014-10-01 false Nurse practitioner services. 440.166 Section 440... (CONTINUED) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Definitions § 440.166 Nurse practitioner services. (a) Definition of nurse practitioner services. Nurse practitioner services means services...

  6. 9 CFR 166.11 - Suspension and revocation of licenses.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Suspension and revocation of licenses. 166.11 Section 166.11 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions §...

  7. 9 CFR 166.11 - Suspension and revocation of licenses.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Suspension and revocation of licenses. 166.11 Section 166.11 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions §...

  8. 40 CFR 166.7 - User notification; advertising.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false User notification; advertising. 166.7... § 166.7 User notification; advertising. (a) A State or Federal agency that obtains an exemption may... received) delivers or offers to deliver any pesticide, to advertise the pesticide for any use authorized...

  9. 50 CFR 648.166 - Bluefish gear restrictions.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 12 2013-10-01 2013-10-01 false Bluefish gear restrictions. 648.166... Measures for the Atlantic Bluefish Fishery § 648.166 Bluefish gear restrictions. If the MAFMC determines through its annual review or framework adjustment process that gear restrictions are necessary to...

  10. 50 CFR 648.166 - Bluefish gear restrictions.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 50 Wildlife and Fisheries 12 2014-10-01 2014-10-01 false Bluefish gear restrictions. 648.166... Measures for the Atlantic Bluefish Fishery § 648.166 Bluefish gear restrictions. If the MAFMC determines through its annual review or framework adjustment process that gear restrictions are necessary to...

  11. 50 CFR 648.166 - Bluefish gear restrictions.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 50 Wildlife and Fisheries 10 2011-10-01 2011-10-01 false Bluefish gear restrictions. 648.166... Measures for the Atlantic Bluefish Fishery § 648.166 Bluefish gear restrictions. If the MAFMC determines through its annual review or framework adjustment process that gear restrictions are necessary to...

  12. 50 CFR 648.166 - Bluefish gear restrictions.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 50 Wildlife and Fisheries 12 2012-10-01 2012-10-01 false Bluefish gear restrictions. 648.166... Measures for the Atlantic Bluefish Fishery § 648.166 Bluefish gear restrictions. If the MAFMC determines through its annual review or framework adjustment process that gear restrictions are necessary to...

  13. 10 CFR 72.166 - Handling, storage, and shipping control.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... STORAGE OF SPENT NUCLEAR FUEL, HIGH-LEVEL RADIOACTIVE WASTE, AND REACTOR-RELATED GREATER THAN CLASS C WASTE Quality Assurance § 72.166 Handling, storage, and shipping control. The licensee, applicant for a... 10 Energy 2 2013-01-01 2013-01-01 false Handling, storage, and shipping control. 72.166 Section...

  14. 10 CFR 72.166 - Handling, storage, and shipping control.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... STORAGE OF SPENT NUCLEAR FUEL, HIGH-LEVEL RADIOACTIVE WASTE, AND REACTOR-RELATED GREATER THAN CLASS C WASTE Quality Assurance § 72.166 Handling, storage, and shipping control. The licensee, applicant for a... 10 Energy 2 2014-01-01 2014-01-01 false Handling, storage, and shipping control. 72.166 Section...

  15. 10 CFR 72.166 - Handling, storage, and shipping control.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... STORAGE OF SPENT NUCLEAR FUEL, HIGH-LEVEL RADIOACTIVE WASTE, AND REACTOR-RELATED GREATER THAN CLASS C WASTE Quality Assurance § 72.166 Handling, storage, and shipping control. The licensee, applicant for a... 10 Energy 2 2011-01-01 2011-01-01 false Handling, storage, and shipping control. 72.166 Section...

  16. 40 CFR 166.30 - Notice of Agency decision.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Notice of Agency decision. 166.30 Section 166.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS...

  17. 40 CFR 166.30 - Notice of Agency decision.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 25 2012-07-01 2012-07-01 false Notice of Agency decision. 166.30 Section 166.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS...

  18. 40 CFR 166.30 - Notice of Agency decision.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Notice of Agency decision. 166.30 Section 166.30 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS...

  19. 40 CFR 60.166 - Test methods and procedures.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 7 2013-07-01 2013-07-01 false Test methods and procedures. 60.166 Section 60.166 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES Standards of Performance for Primary...

  20. 40 CFR 60.166 - Test methods and procedures.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 7 2014-07-01 2014-07-01 false Test methods and procedures. 60.166 Section 60.166 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES Standards of Performance for Primary...

  1. 25 CFR 166.904 - What is agriculture education outreach?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false What is agriculture education outreach? 166.904 Section... Agriculture Education, Education Assistance, Recruitment, and Training § 166.904 What is agriculture education outreach? (a) We will establish and maintain an agriculture education outreach program for Indian...

  2. 40 CFR 166.7 - User notification; advertising.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false User notification; advertising. 166.7... § 166.7 User notification; advertising. (a) A State or Federal agency that obtains an exemption may... received) delivers or offers to deliver any pesticide, to advertise the pesticide for any use authorized...

  3. 27 CFR 46.166 - Dealing in tobacco products.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2012-04-01 2011-04-01 true Dealing in tobacco products. 46.166 Section 46.166 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY (CONTINUED) TOBACCO MISCELLANEOUS REGULATIONS RELATING TO TOBACCO PRODUCTS...

  4. 27 CFR 46.166 - Dealing in tobacco products.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2011-04-01 2011-04-01 false Dealing in tobacco products. 46.166 Section 46.166 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY (CONTINUED) TOBACCO MISCELLANEOUS REGULATIONS RELATING TO...

  5. 27 CFR 46.166 - Dealing in tobacco products.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2010-04-01 2010-04-01 false Dealing in tobacco products. 46.166 Section 46.166 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY (CONTINUED) TOBACCO MISCELLANEOUS REGULATIONS RELATING TO...

  6. 27 CFR 46.166 - Dealing in tobacco products.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2014-04-01 2014-04-01 false Dealing in tobacco products. 46.166 Section 46.166 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY (CONTINUED) TOBACCO MISCELLANEOUS REGULATIONS RELATING TO...

  7. 27 CFR 46.166 - Dealing in tobacco products.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2013-04-01 2013-04-01 false Dealing in tobacco products. 46.166 Section 46.166 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY (CONTINUED) TOBACCO MISCELLANEOUS REGULATIONS RELATING TO...

  8. 40 CFR 60.166 - Test methods and procedures.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 6 2010-07-01 2010-07-01 false Test methods and procedures. 60.166 Section 60.166 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES Standards of Performance for Primary...

  9. 9 CFR 166.11 - Suspension and revocation of licenses.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 9 Animals and Animal Products 1 2012-01-01 2012-01-01 false Suspension and revocation of licenses. 166.11 Section 166.11 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions §...

  10. 9 CFR 166.11 - Suspension and revocation of licenses.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Suspension and revocation of licenses. 166.11 Section 166.11 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions §...

  11. 9 CFR 166.6 - Swine feeding area standards.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Swine feeding area standards. 166.6... AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.6 Swine feeding area standards. Untreated garbage shall not be allowed into swine feeding areas. Any equipment or...

  12. 9 CFR 166.6 - Swine feeding area standards.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Swine feeding area standards. 166.6... AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.6 Swine feeding area standards. Untreated garbage shall not be allowed into swine feeding areas. Any equipment or...

  13. 9 CFR 166.6 - Swine feeding area standards.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 9 Animals and Animal Products 1 2012-01-01 2012-01-01 false Swine feeding area standards. 166.6... AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.6 Swine feeding area standards. Untreated garbage shall not be allowed into swine feeding areas. Any equipment or...

  14. 9 CFR 166.11 - Suspension and revocation of licenses.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Suspension and revocation of licenses. 166.11 Section 166.11 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions §...

  15. 26 CFR 1.166-2 - Evidence of worthlessness.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 26 Internal Revenue 2 2012-04-01 2012-04-01 false Evidence of worthlessness. 1.166-2 Section 1.166... Comptroller of the Currency Banking Circular No. 127, Rev. 4-26-91, Comptroller of the Currency... Supervision, 12 CFR 563.160(b)(3). (iii) Election—(A) In general. An election under this paragraph (d)(3)...

  16. 26 CFR 1.166-2 - Evidence of worthlessness.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 26 Internal Revenue 2 2013-04-01 2013-04-01 false Evidence of worthlessness. 1.166-2 Section 1.166... Comptroller of the Currency Banking Circular No. 127, Rev. 4-26-91, Comptroller of the Currency... Supervision, 12 CFR 563.160(b)(3). (iii) Election—(A) In general. An election under this paragraph (d)(3)...

  17. 42 CFR 416.166 - Covered surgical procedures.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 3 2011-10-01 2011-10-01 false Covered surgical procedures. 416.166 Section 416.166 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICARE PROGRAM AMBULATORY SURGICAL SERVICES Coverage, Scope of ASC Services, and Prospective Payment System for ASC Services Furnished...

  18. 25 CFR 166.904 - What is agriculture education outreach?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false What is agriculture education outreach? 166.904 Section... Agriculture Education, Education Assistance, Recruitment, and Training § 166.904 What is agriculture education outreach? (a) We will establish and maintain an agriculture education outreach program for Indian...

  19. 25 CFR 166.904 - What is agriculture education outreach?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true What is agriculture education outreach? 166.904 Section... Agriculture Education, Education Assistance, Recruitment, and Training § 166.904 What is agriculture education outreach? (a) We will establish and maintain an agriculture education outreach program for Indian...

  20. 25 CFR 166.400 - Who establishes grazing rental rates?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false Who establishes grazing rental rates? 166.400 Section 166.400 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination and...

  1. 25 CFR 166.400 - Who establishes grazing rental rates?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Who establishes grazing rental rates? 166.400 Section 166.400 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination and...

  2. 25 CFR 166.400 - Who establishes grazing rental rates?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true Who establishes grazing rental rates? 166.400 Section 166.400 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination and...

  3. 25 CFR 166.400 - Who establishes grazing rental rates?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Who establishes grazing rental rates? 166.400 Section 166.400 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination and...

  4. 25 CFR 166.400 - Who establishes grazing rental rates?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false Who establishes grazing rental rates? 166.400 Section 166.400 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination and...

  5. 40 CFR 166.45 - Duration of crisis exemption.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Duration of crisis exemption. 166.45... EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.45 Duration of crisis exemption. A crisis exemption may be authorized for: (a) Only as long as...

  6. 40 CFR 166.45 - Duration of crisis exemption.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 25 2012-07-01 2012-07-01 false Duration of crisis exemption. 166.45... EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.45 Duration of crisis exemption. A crisis exemption may be authorized for: (a) Only as long as...

  7. 40 CFR 166.45 - Duration of crisis exemption.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Duration of crisis exemption. 166.45... EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.45 Duration of crisis exemption. A crisis exemption may be authorized for: (a) Only as long as...

  8. 40 CFR 166.45 - Duration of crisis exemption.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 24 2014-07-01 2014-07-01 false Duration of crisis exemption. 166.45... EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.45 Duration of crisis exemption. A crisis exemption may be authorized for: (a) Only as long as...

  9. 40 CFR 166.1 - Purpose and organization.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Purpose and organization. 166.1... § 166.1 Purpose and organization. (a) Purpose and scope. Section 18 of the Act authorizes the... regulate the manner in which a pesticide is made available for use or is used. (b) Organization. (1)...

  10. 32 CFR 644.166 - Authority and applicability.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 4 2011-07-01 2011-07-01 false Authority and applicability. 644.166 Section 644.166 National Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY (CONTINUED) REAL PROPERTY REAL ESTATE HANDBOOK Acquisition Procurement of Options Prior to Real Estate Directives...

  11. 40 CFR 166.45 - Duration of crisis exemption.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Duration of crisis exemption. 166.45... EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.45 Duration of crisis exemption. A crisis exemption may be authorized for: (a) Only as long as...

  12. 42 CFR 416.166 - Covered surgical procedures.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ....166 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES... Prospective Payment System for ASC Services Furnished on or After January 1, 2008 § 416.166 Covered surgical... prolonged invasion of body cavities; (3) Directly involve major blood vessels; (4) Are generally emergent...

  13. 42 CFR 416.166 - Covered surgical procedures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ....166 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES... Payment System for ASC Services Furnished on or After January 1, 2008 § 416.166 Covered surgical...) Generally result in extensive blood loss; (2) Require major or prolonged invasion of body cavities;...

  14. Clinical implication of CD166 expression in salivary gland tumor.

    PubMed

    Andisheh-Tadbir, Azadeh; Ashraf, Mohammad Javad; Khademi, Bijan; Ahmadi, Shahab

    2015-04-01

    CD166 is a glycoprotein of immunoglobulin superfamily of adhesion molecules which is overexpressed in many tumors. However, no published literature was found concerning CD166 expression in salivary gland tumor. The purpose of this study was to examine the CD166 expression in the salivary gland tumor by an immunohistochemical approach, to examine the clinical implication of this marker in the prognosis and diagnosis of the salivary gland tumor. In this study, 45 samples of salivary tumors from Khalili Hospital archive including 15 cases of pleomorphic adenoma, 16 cases of mucoepidermoid carcinoma, 14 cases of adenoid cystic carcinoma, and 15 normal salivary glands were selected for immunohistochemistry (IHC) method staining for CD166. CD166 immunoreactivity in malignant tumors (adenoid cystic carcinoma (ACC) and mucoepidermoid carcinoma (MEC)) (56.7 ± 14.05) was significantly higher than that of pleomorphic adenoma (PA) (34.3 ± 17.07) (P < 0.000) and higher in the PA than normal salivary gland (13.2 ± 12.1) (P = 0.001). CD166 expression was significantly higher in the high-grade tumors (90.3 ± 11.07) compared to low-grade (65.11 ± 27.08) malignant tumors (P = 0.002). CD166 expression showed a significant association with tumor size and the clinical stage (P < 0.001). In conclusion, an overexpression of CD166 was detected in the benign and malignant salivary gland tumors and its expression in the malignant tumor was associated with the aggressive behavior and tumor progression. For this reason, CD166 may be one of the potential biomarkers for predicting tumor behavior in the prognosis of this disease.

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

    NASA Astrophysics Data System (ADS)

    Yang, Mengsi; Jin, Jianhua; Xu, Guiqing; Cui, Fengling; Luo, Hongxia

    2014-01-01

    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.

  16. Dysprosium-carboxylate nanomeshes with tunable cavity size and assembly motif through ionic interactions.

    PubMed

    Cirera, B; Đorđević, L; Otero, R; Gallego, J M; Bonifazi, D; Miranda, R; Ecija, D

    2016-09-28

    We report the design of dysprosium directed metallo-supramolecular architectures on a pristine Cu(111) surface. By an appropriate selection of the ditopic molecular linkers equipped with terminal carboxylic groups (TPA, PDA and TDA species), we create reticular and mononuclear metal-organic nanomeshes of tunable internodal distance, which are stabilized by eight-fold DyO interactions. A thermal annealing treatment for the reticular Dy:TDA architecture gives rise to an unprecedented quasi-hexagonal nanostructure based on dinuclear Dy clusters, exhibiting a unique six-fold DyO bonding motif. All metallo-supramolecular architectures are stable at room temperature. Our results open new avenues for the engineering of supramolecular architectures on surfaces incorporating f-block elements forming thermally robust nanoarchitectures through ionic bonds. PMID:27560774

  17. Photophysical and electrochemical properties of a dysprosium-zinc tetra(4-sulfonatophenyl)porphyrin complex.

    PubMed

    Chen, Wen-Tong; Liu, Dong-Sheng; Xu, Ya-Ping; Luo, Qiu-Yan; Pei, Yun-Peng

    2016-02-01

    A dysprosium-zinc porphyrin, [DyZn(TPPS)H3O]n (1) (TPPS = tetra(4-sulfonatophenyl)porphyrin), was prepared through solvothermal reactions and structurally characterized by single-crystal X-ray diffraction analyses. Complex 1 features a three-dimensional (3-D) porous open framework that is thermally stable up to 400 °C. Complex 1 displays a void space of 215 Å(3), occupying 9.2% of the unit cell volume. The fluorescence spectra reveal that it shows an emission band in the red region. The fluorescence lifetime is 39 µsec and the quantum yield is 1.7%. The cyclic voltammetry (CV) measurement revealed one quasi-reversible wave with E1/2  = 0.30 V. PMID:26014749

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

    NASA Astrophysics Data System (ADS)

    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.

  19. Structural and electrical characteristics of dysprosium-doped barium stannate titanate ceramics

    SciTech Connect

    Wang, Shijie; Tan, Tai Aik; Lai, Man On; Lu, Li

    2010-03-15

    Effects of dysprosium (Dy) amphoteric doping on the structural, dielectric and electric properties of barium stannate titanate (BTS) ceramics have been studied. X-ray diffraction analyses reveal that all Dy-doped BTS ceramics exhibit cubic perovskite structure until to 1 mol%. Dy doping at the A site shows lower solubility than that at the B site. SEM surface morphologies display that the Dy B site doping is beneficial for the compact and homogeneous grain distribution. The dielectric constant and loss tangent are reduced with increase of the doping levels. Impedance spectroscopy investigation demonstrates that all samples are insulating at room temperature. Doping alters the full resistive regions of pure BTS ceramics to Doped BTS with insulating grain boundaries and semiconducting bulk regions, but the doping contents has little effect on changing the electric structures.

  20. Photophysical and electrochemical properties of a dysprosium-zinc tetra(4-sulfonatophenyl)porphyrin complex.

    PubMed

    Chen, Wen-Tong; Liu, Dong-Sheng; Xu, Ya-Ping; Luo, Qiu-Yan; Pei, Yun-Peng

    2016-02-01

    A dysprosium-zinc porphyrin, [DyZn(TPPS)H3O]n (1) (TPPS = tetra(4-sulfonatophenyl)porphyrin), was prepared through solvothermal reactions and structurally characterized by single-crystal X-ray diffraction analyses. Complex 1 features a three-dimensional (3-D) porous open framework that is thermally stable up to 400 °C. Complex 1 displays a void space of 215 Å(3), occupying 9.2% of the unit cell volume. The fluorescence spectra reveal that it shows an emission band in the red region. The fluorescence lifetime is 39 µsec and the quantum yield is 1.7%. The cyclic voltammetry (CV) measurement revealed one quasi-reversible wave with E1/2  = 0.30 V.

  1. Distribution of heating in an LVRF bundle due to dysprosium in the central element

    SciTech Connect

    Tsang, K.; Buijs, A.

    2006-07-01

    The computer code MCNP was used to establish the effect of adding dysprosium to the central pin of the proposed BRUCE-B CANFLEX{sup R} Low-Void-Reactivity Fuel (LVRF) on the heat load of the central pin and the heat balance inside the fuel bundle. The Dy generates heat through radiative capture of thermal neutrons, as well as through beta decay of {sup 165}Dy to {sup 165}Ho. We conclude that for fresh fuel, the presence of Dy contributes 26% of the overall heat to the central pin, and 0.5% to the whole fuel bundle. These percentages decrease to 11% and 0.5% at the end-of-life burnup condition. A second, operational quantity is the HPFP ratio (heating-power to fission-power ratio). This ratio is 1.63 for fresh fuel and decreases to 1.19 for fuel at the end-of-life burnup condition. (authors)

  2. Dysprosium-carboxylate nanomeshes with tunable cavity size and assembly motif through ionic interactions.

    PubMed

    Cirera, B; Đorđević, L; Otero, R; Gallego, J M; Bonifazi, D; Miranda, R; Ecija, D

    2016-09-28

    We report the design of dysprosium directed metallo-supramolecular architectures on a pristine Cu(111) surface. By an appropriate selection of the ditopic molecular linkers equipped with terminal carboxylic groups (TPA, PDA and TDA species), we create reticular and mononuclear metal-organic nanomeshes of tunable internodal distance, which are stabilized by eight-fold DyO interactions. A thermal annealing treatment for the reticular Dy:TDA architecture gives rise to an unprecedented quasi-hexagonal nanostructure based on dinuclear Dy clusters, exhibiting a unique six-fold DyO bonding motif. All metallo-supramolecular architectures are stable at room temperature. Our results open new avenues for the engineering of supramolecular architectures on surfaces incorporating f-block elements forming thermally robust nanoarchitectures through ionic bonds.

  3. 40 CFR 82.166 - Reporting and recordkeeping requirements.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... PROGRAMS (CONTINUED) PROTECTION OF STRATOSPHERIC OZONE Recycling and Emissions Reduction § 82.166 Reporting... organizations shall submit to EPA within 30 days of the certification of a new model line of recycling...

  4. 40 CFR 82.166 - Reporting and recordkeeping requirements.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... PROGRAMS (CONTINUED) PROTECTION OF STRATOSPHERIC OZONE Recycling and Emissions Reduction § 82.166 Reporting... organizations shall submit to EPA within 30 days of the certification of a new model line of recycling...

  5. 40 CFR 82.166 - Reporting and recordkeeping requirements.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... PROGRAMS (CONTINUED) PROTECTION OF STRATOSPHERIC OZONE Recycling and Emissions Reduction § 82.166 Reporting... organizations shall submit to EPA within 30 days of the certification of a new model line of recycling...

  6. 40 CFR 82.166 - Reporting and recordkeeping requirements.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... PROGRAMS (CONTINUED) PROTECTION OF STRATOSPHERIC OZONE Recycling and Emissions Reduction § 82.166 Reporting... organizations shall submit to EPA within 30 days of the certification of a new model line of recycling...

  7. 40 CFR 82.166 - Reporting and recordkeeping requirements.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... PROGRAMS (CONTINUED) PROTECTION OF STRATOSPHERIC OZONE Recycling and Emissions Reduction § 82.166 Reporting... organizations shall submit to EPA within 30 days of the certification of a new model line of recycling...

  8. 40 CFR 408.166 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or... Salmon Processing Subcategory § 408.166 Pretreatment standards for new sources. Any new source subject...

  9. 40 CFR 408.166 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or... Salmon Processing Subcategory § 408.166 Pretreatment standards for new sources. Any new source subject...

  10. 40 CFR 408.166 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or... Salmon Processing Subcategory § 408.166 Pretreatment standards for new sources. Any new source subject...

  11. 40 CFR 408.166 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or... Salmon Processing Subcategory § 408.166 Pretreatment standards for new sources. Any new source subject...

  12. 40 CFR 408.166 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or... Salmon Processing Subcategory § 408.166 Pretreatment standards for new sources. Any new source subject...

  13. 42 CFR 460.166 - Effective date of disenrollment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... SERVICES (CONTINUED) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) Participant Enrollment and Disenrollment § 460.166 Effective date...

  14. 42 CFR 460.166 - Effective date of disenrollment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... SERVICES (CONTINUED) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) Participant Enrollment and Disenrollment § 460.166 Effective date...

  15. 42 CFR 460.166 - Effective date of disenrollment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... SERVICES (CONTINUED) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) Participant Enrollment and Disenrollment § 460.166 Effective date...

  16. 42 CFR 460.166 - Effective date of disenrollment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... SERVICES (CONTINUED) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) Participant Enrollment and Disenrollment § 460.166 Effective date...

  17. Atomic Mass and Nuclear Binding Energy for I-166 (Iodine)

    NASA Astrophysics Data System (ADS)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume A `Nuclei with Z = 1 - 54' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms'. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope I-166 (Iodine, atomic number Z = 53, mass number A = 166).

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

    NASA Astrophysics Data System (ADS)

    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.

  19. Fluorescence studies, DNA binding properties and antimicrobial activity of a dysprosium(III) complex containing 1,10-phenanthroline.

    PubMed

    Khorasani-Motlagh, Mozhgan; Noroozifar, Meissam; Moodi, Asieh; Niroomand, Sona

    2013-10-01

    Luminescence and binding properties of dysprosium(III) complex containing 1,10-phenanthroline (phen), [Dy(phen)2(OH2)3Cl]Cl2⋅H2O with DNA has been studied by electronic absorption, emission spectroscopy and viscosity measurement. The thermodynamic studies suggest that the interaction process to be endothermic and entropically driven, which indicates that the dysprosium(III) complex might interact with DNA by a non intercalation binding mode. Additionally, the competitive fluorescence study with ethidium bromide and also the effect of iodide ion and salt concentration on fluorescence of the complex-DNA system is investigated. Experimental results indicate that the Dy(III) complex strongly binds to DNA, presumably via groove binding mode. Furthermore, the complex shows a potent antibacterial activity and DNA cleavage ability.

  20. Peripheral Substitution: An Easy Way to Tuning the Magnetic Behavior of Tetrakis(phthalocyaninato) Dysprosium(III) SMMs

    PubMed Central

    Shang, Hong; Zeng, Suyuan; Wang, Hailong; Dou, Jianmin; Jiang, Jianzhuang

    2015-01-01

    Two tetrakis(phthalocyaninato) dysprosium(III)-cadmium(II) single-molecule magnets (SMMs) with different extent of phthalocyanine peripheral substitution and therefore different coordination geometry for the Dy ions were revealed to exhibit different SMM behavior, providing an easy way to tuning and controlling the molecular structure and in turn the magnetic properties of tetrakis(tetrapyrrole) lanthanide SMMs through simple tetrapyrrole peripheral substitution. PMID:25744587

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

    NASA Astrophysics Data System (ADS)

    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

  2. Paramagnetic dysprosium-doped zinc oxide thin films grown by pulsed-laser deposition

    SciTech Connect

    Lo, Fang-Yuh Ting, Yi-Chieh; Chou, Kai-Chieh; Hsieh, Tsung-Chun; Ye, Cin-Wei; Hsu, Yung-Yuan; Liu, Hsiang-Lin; Chern, Ming-Yau

    2015-06-07

    Dysprosium(Dy)-doped zinc oxide (Dy:ZnO) thin films were fabricated on c-oriented sapphire substrate by pulsed-laser deposition with doping concentration ranging from 1 to 10 at. %. X-ray diffraction (XRD), Raman-scattering, optical transmission spectroscopy, and spectroscopic ellipsometry revealed incorporation of Dy into ZnO host matrix without secondary phase. Solubility limit of Dy in ZnO under our deposition condition was between 5 and 10 at. % according to XRD and Raman-scattering characteristics. Optical transmission spectroscopy and spectroscopic ellipsometry also showed increase in both transmittance in ultraviolet regime and band gap of Dy:ZnO with increasing Dy density. Zinc vacancies and zinc interstitials were identified by photoluminescence spectroscopy as the defects accompanied with Dy incorporation. Magnetic investigations with a superconducting quantum interference device showed paramagnetism without long-range order for all Dy:ZnO thin films, and a hint of antiferromagnetic alignment of Dy impurities was observed at highest doping concentration—indicating the overall contribution of zinc vacancies and zinc interstitials to magnetic interaction was either neutral or toward antiferromagnetic. From our investigations, Dy:ZnO thin films could be useful for spin alignment and magneto-optical applications.

  3. Spectral and physicochemical characterization of dysprosium-based multifunctional ionic liquid crystals.

    PubMed

    Lu, Chengfei; Das, Susmita; Siraj, Noureen; Magut, Paul K S; Li, Min; Warner, Isiah M

    2015-05-21

    We report on the synthesis and characterization of multifunctional ionic liquid crystals (melting points below 100 °C) which possess chirality and fluorescent behavior as well as mesomorphic and magnetic properties. In this regard, (1R,2S)-(-)-N-methylephedrine ((-)MeEph), containing a chiral center, is linked with variable alkyl chain lengths (e.g., 14, 16, and 18 carbons) to yield liquid crystalline properties in the cations of these compounds. A complex counteranion consisting of trivalent dysprosium (Dy(3+)) and thiocyanate ligand (SCN(-)) is employed, where Dy(3+) provides fluorescent and magnetic properties. Examination of differential scanning calorimetry (DSC) and hot-stage polarizing optical microscopy (POM) data confirmed liquid crystalline characteristics in these materials. We further report on phase transitions from solid to liquid crystal states, followed by isotropic liquid states with increasing temperature. These compounds exhibited two characteristic emission peaks in acetonitrile solution and the solid state when excited at λex = 366 nm, which are attributed to transitions from (4)F9/2 to (6)H15/2 and (4)F9/2 to (6)H13/2. The emission intensities of these compounds were found to be very sensitive to the phase.

  4. Toxicity of dysprosium nano particles with glucose and sodium chloride on E. Coli

    NASA Astrophysics Data System (ADS)

    Anaya, N. M.; Solomon, F.; Oyanedel-Craver, V.

    2013-12-01

    Application of rare earth elements (REEs) such as, dysprosium nanoparticles (nDy), to the biomedical field are increasing due to their paramagnetic properties. Current applications of nDy in the biomedical field are in MRI screening and anti-cancer therapy. Environmental impacts of nDy released into the environment are unknown or poorly understood and are a concern due to the lack of appropriate recycling systems. The objective of this toxicological study is to assess the impacts of nDy at relevant environmental concentrations on Escherichia coli. A range of glucose concentrations were used to evaluate the impact under different aerobic metabolic stages when the bacteria are exposed to the nanoparticles. Two traditional techniques used to evaluate the physiological response of E. coli at different environmental conditions were dual staining with fluorescent dyes (Live/Dead BacLight viability kit) and respirometric assays. A high-through put array-based methodology was implemented to provide additional toxicity testing. Preliminary toxicology results for both traditional techniques showed a positive trend between nDy and carbon source concentrations. High concentrations of nDy (>5mg/L) in environments with high glucose concentration (>210mg/L) are more toxic to E. coli than environments with low glucose concentrations. On the other hand, Live/Dead experiments showed higher toxicity effect in comparison to the respirometric tests using the same exposure conditions, suggesting that even at high membrane disruption the bacteria can still performed some metabolic activity.

  5. Isolation of 163Ho from dysprosium target material by HPLC for neutrino mass measurements

    DOE PAGESBeta

    Mocko, Veronika; Taylor, Wayne  A.; Nortier, Francois M.; Engle, Jonathan  W.; Barnhart, Todd  E.; Nickles, Robert  J.; Pollington, Anthony  D.; Kunde, Gerd  J.; Rabin, Michael  W.; Birnbaum, Eva  R.

    2015-04-29

    The rare earth isotope 163Ho is of interest for neutrino mass measurements. This report describes the isolation of 163Ho 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, 163Ho was separated from the bulk Dy via cation-exchange high performance liquid chromatography using 70 mmol dm–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-MSmore » to determine the 163Ho/165Ho ratio, 163Ho and the residual Dy content. The HPLC purification process resulted in a decontamination factor 1.4E5 for Dy. As a result, the isolated Ho fraction contained 24.8 ±1.3 ng of 163Ho corresponding to holmium recovery of 72 ± 3%.« less

  6. New limits on variation of the fine-structure constant using atomic dysprosium.

    PubMed

    Leefer, N; Weber, C T M; Cingöz, A; Torgerson, J R; Budker, D

    2013-08-01

    We report on the spectroscopy of radio-frequency transitions between nearly degenerate, opposite-parity excited states in atomic dysprosium (Dy). Theoretical calculations predict that these states are very sensitive to variation of the fine-structure constant α owing to large relativistic corrections of opposite sign for the opposite-parity levels. The near degeneracy reduces the relative precision necessary to place constraints on variation of α, competitive with results obtained from the best atomic clocks in the world. Additionally, the existence of several abundant isotopes of Dy allows isotopic comparisons that suppress common-mode systematic errors. The frequencies of the 754-MHz transition in 164Dy and 235-MHz transition in 162Dy are measured over the span of two years. The linear variation of α is α·/α=(-5.8±6.9([1σ]))×10(-17)  yr(-1), consistent with zero. The same data are used to constrain the dimensionless parameter kα characterizing a possible coupling of α to a changing gravitational potential. We find that kα=(-5.5±5.2([1σ]))×10(-7), essentially consistent with zero and the best constraint to date.

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

    DOE PAGESBeta

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

    2014-04-03

    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 extreme conditions of pressure to 69 GPa and temperature to 10 K. Previous studies using magnetic susceptibility measurements at high pressures were only able to track magnetic ordering temperature 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 ismore » followed by a rapid increase in the magnetic ordering temperatures in the double hexagonal close packed phase and finally leveling off in the distorted face centered cubic phase of Dy. Lastly, our studies reaffirm that 4f-shell remain localized in Dy and there is no loss of magnetic moment or 4f-shell delocalization for pressures up to 69 GPa.« less

  8. A New Fungal Isolate, Penidiella sp. Strain T9, Accumulates the Rare Earth Element Dysprosium

    PubMed Central

    Horiike, Takumi

    2015-01-01

    With an aim to develop a highly efficient method for the recovery of rare earth elements (REEs) by using microorganisms, we attempted to isolate dysprosium (Dy)-accumulating microorganisms that grow under acidic conditions from environmental samples containing high concentrations of heavy metals. One acidophilic strain, T9, which was isolated from an abandoned mine, decreased the concentration of Dy in medium that contained 100 mg/liter Dy to 53 mg/liter Dy after 3 days of cultivation at pH 2.5. The Dy content in the cell pellet of the T9 strain was 910 μg/mg of dry cells. The T9 strain also accumulated other REEs. Based on the results of 28S-D1/D2 rRNA gene sequencing and morphological characterization, we designated this fungal strain Penidiella sp. T9. Bioaccumulation of Dy was observed on the cell surface of the T9 strain by elemental mapping using scanning electron microscopy-energy dispersive X-ray spectroscopy. Our results indicate that Penidiella sp. T9 has the potential to recover REEs such as Dy from mine drainage and industrial liquid waste under acidic conditions. PMID:25710372

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

    SciTech Connect

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

    2014-04-03

    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 extreme conditions of pressure to 69 GPa and temperature to 10 K. Previous studies using magnetic susceptibility measurements at high pressures were only able to track magnetic ordering temperature 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 hexagonal close packed phase and finally leveling off in the distorted face centered cubic phase of Dy. Lastly, our studies reaffirm that 4f-shell remain localized in Dy and there is no loss of magnetic moment or 4f-shell delocalization for pressures up to 69 GPa.

  10. New limits on variation of the fine-structure constant using atomic dysprosium.

    PubMed

    Leefer, N; Weber, C T M; Cingöz, A; Torgerson, J R; Budker, D

    2013-08-01

    We report on the spectroscopy of radio-frequency transitions between nearly degenerate, opposite-parity excited states in atomic dysprosium (Dy). Theoretical calculations predict that these states are very sensitive to variation of the fine-structure constant α owing to large relativistic corrections of opposite sign for the opposite-parity levels. The near degeneracy reduces the relative precision necessary to place constraints on variation of α, competitive with results obtained from the best atomic clocks in the world. Additionally, the existence of several abundant isotopes of Dy allows isotopic comparisons that suppress common-mode systematic errors. The frequencies of the 754-MHz transition in 164Dy and 235-MHz transition in 162Dy are measured over the span of two years. The linear variation of α is α·/α=(-5.8±6.9([1σ]))×10(-17)  yr(-1), consistent with zero. The same data are used to constrain the dimensionless parameter kα characterizing a possible coupling of α to a changing gravitational potential. We find that kα=(-5.5±5.2([1σ]))×10(-7), essentially consistent with zero and the best constraint to date. PMID:23971546

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

    PubMed

    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.

  12. Limit on the Temporal Variation of the Fine-Structure Constant Using Atomic Dysprosium

    SciTech Connect

    Cingoez, A.; Lapierre, A.; Leefer, N.; Nguyen, A.-T.; Lamoreaux, S. K.; Torgerson, J. R.; Budker, D.

    2007-01-26

    Over 8 months, we monitored transition frequencies between nearly degenerate, opposite-parity levels in two isotopes of atomic dysprosium (Dy). These frequencies are sensitive to variation of the fine-structure constant ({alpha}) due to relativistic corrections of opposite sign for the opposite-parity levels. In this unique system, in contrast to atomic-clock comparisons, the difference of the electronic energies of the opposite-parity levels can be monitored directly utilizing a rf electric-dipole transition between them. Our measurements show that the frequency variation of the 3.1-MHz transition in {sup 163}Dy and the 235-MHz transition in {sup 162}Dy are 9.0{+-}6.7 Hz/yr and -0.6{+-}6.5 Hz/yr, respectively. These results provide a rate of fractional variation of {alpha} of (-2.7{+-}2.6)x10{sup -15} yr{sup -1} (1{sigma}) without assumptions on constancy of other fundamental constants, indicating absence of significant variation at the present level of sensitivity.

  13. A new fungal isolate, Penidiella sp. strain T9, accumulates the rare earth element dysprosium.

    PubMed

    Horiike, Takumi; Yamashita, Mitsuo

    2015-05-01

    With an aim to develop a highly efficient method for the recovery of rare earth elements (REEs) by using microorganisms, we attempted to isolate dysprosium (Dy)-accumulating microorganisms that grow under acidic conditions from environmental samples containing high concentrations of heavy metals. One acidophilic strain, T9, which was isolated from an abandoned mine, decreased the concentration of Dy in medium that contained 100 mg/liter Dy to 53 mg/liter Dy after 3 days of cultivation at pH 2.5. The Dy content in the cell pellet of the T9 strain was 910 μg/mg of dry cells. The T9 strain also accumulated other REEs. Based on the results of 28S-D1/D2 rRNA gene sequencing and morphological characterization, we designated this fungal strain Penidiella sp. T9. Bioaccumulation of Dy was observed on the cell surface of the T9 strain by elemental mapping using scanning electron microscopy-energy dispersive X-ray spectroscopy. Our results indicate that Penidiella sp. T9 has the potential to recover REEs such as Dy from mine drainage and industrial liquid waste under acidic conditions.

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

    PubMed

    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. PMID:25828828

  15. 49 CFR 1.66 - Delegations to Maritime Administrator.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... feasibility study of an oil pollution prevention program. (See 49 CFR 1.46 and 1.53). (z) Carry out the... Federal Register citations affecting § 1.66, see the List of CFR Sections Affected which appears in the... provisions of sections 10 through 13 of Public Law 103-451, the National Maritime Heritage Act of 1994,...

  16. 40 CFR 417.166 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or... GUIDELINES AND STANDARDS SOAP AND DETERGENT MANUFACTURING POINT SOURCE CATEGORY Manufacture of Liquid Detergents Subcategory § 417.166 Pretreatment standards for new sources. Any new source subject to...

  17. 40 CFR 417.166 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or... GUIDELINES AND STANDARDS SOAP AND DETERGENT MANUFACTURING POINT SOURCE CATEGORY Manufacture of Liquid Detergents Subcategory § 417.166 Pretreatment standards for new sources. Any new source subject to...

  18. Production and characterization of 166Ho polylactic acid microspheres.

    PubMed

    Yavari, Kamal; Yeganeh, Ehsan; Abolghasemi, Hossein

    2016-01-01

    Microsphere and particle technology with selective transport of radiation represents a new generation of therapeutics. Poly-L-lactic acid (PLLA) microspheres loaded with holmium-166 acetylacetonate ((166)Ho-PLLA-MS) are novel microdevices. In this research, (165)HoAcAc-PLLA microparticles were prepared by the solvent evaporation technique. Microspheres were irradiated at Tehran Research Reactor. The diameter and surface morphologies were characterized by particle sizer and scanning electron microscopy before and after irradiation. The complex stability, radiochemical purity, and in vivo biodistribiotion were checked in the final solution up to 3 days. In this study, (166)Ho-PLLA spherical particles with a smooth surface and diameter of 20-40 µm were obtained, which were stable in vitro and in vivo studies. Neutron irradiation did not damage the particles. The ease with which the PLLA spheres could be made in the optimal size range for later irradiation and their ability to retain the (166)Ho provided good evidence for their potential use in radioembolization.

  19. 34 CFR 303.166 - Evaluation, assessment, and nondiscriminatory procedures.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Statewide System-Application Requirements § 303.166 Evaluation, assessment, and nondiscriminatory procedures. Each application must include information to demonstrate that the requirements in §§ 303.322 and 303.323 are met. (Approved by the Office of Management and Budget under control number...

  20. 34 CFR 303.166 - Evaluation, assessment, and nondiscriminatory procedures.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... System-Application Requirements § 303.166 Evaluation, assessment, and nondiscriminatory procedures. Each application must include information to demonstrate that the requirements in §§ 303.322 and 303.323 are met. (Approved by the Office of Management and Budget under control number 1820-0550) (Authority: 20 U.S.C....

  1. 40 CFR 98.166 - Data reporting requirements.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Hydrogen Production § 98.166 Data reporting requirements. In... process emissions. (2) Annual quantity of hydrogen produced (metric tons) for each process unit and for... report the following information for each hydrogen production process unit: (1) Unit...

  2. 17 CFR 166.5 - Dispute settlement procedures.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... that election. You need not sign this agreement to open or maintain an account with . See 17 CFR 166.5... forex transaction (as defined in § 5.1(m) of this chapter). (2) The term customer as used in this section includes an option customer (as defined in § 1.3(jj) of this chapter), a retail forex customer...

  3. 17 CFR 166.5 - Dispute settlement procedures.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... that election. You need not sign this agreement to open or maintain an account with . See 17 CFR 166.5... forex transaction (as defined in § 5.1(m) of this chapter). (2) The term customer as used in...

  4. 17 CFR 166.5 - Dispute settlement procedures.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... that election. You need not sign this agreement to open or maintain an account with . See 17 CFR 166.5... of any retail forex transaction (as defined in § 5.1(m) of this chapter). (2) The term customer...

  5. 40 CFR 205.166 - Noise emission standards.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Motorcycle Exhaust Systems § 205.166 Noise... are designed and marketed for use on any Federally regulated street motorcycle of the following and subsequent model years must be designed and built so that when installed on any such motorcycle which is...

  6. 40 CFR 205.166 - Noise emission standards.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Motorcycle Exhaust Systems § 205.166 Noise... are designed and marketed for use on any Federally regulated street motorcycle of the following and subsequent model years must be designed and built so that when installed on any such motorcycle which is...

  7. 40 CFR 205.166 - Noise emission standards.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Motorcycle Exhaust Systems § 205.166 Noise... are designed and marketed for use on any Federally regulated street motorcycle of the following and subsequent model years must be designed and built so that when installed on any such motorcycle which is...

  8. 40 CFR 166.49 - Public notice of crisis exemptions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 25 2012-07-01 2012-07-01 false Public notice of crisis exemptions... PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.49 Public notice of crisis exemptions. (a) Periodic notices. At least quarterly,...

  9. 40 CFR 166.49 - Public notice of crisis exemptions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Public notice of crisis exemptions... PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.49 Public notice of crisis exemptions. (a) Periodic notices. At least quarterly,...

  10. 40 CFR 166.49 - Public notice of crisis exemptions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Public notice of crisis exemptions... PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.49 Public notice of crisis exemptions. (a) Periodic notices. At least quarterly,...

  11. 40 CFR 166.49 - Public notice of crisis exemptions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 24 2014-07-01 2014-07-01 false Public notice of crisis exemptions... PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.49 Public notice of crisis exemptions. (a) Periodic notices. At least quarterly,...

  12. 166. ARAIII Fire hose houses (Probably numbered on site as ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    166. ARA-III Fire hose houses (Probably numbered on site as ARA-624). Aerojet-general 880-area/GCRE-701-S-4. Date: February 1958. Ineel index code no. 063-0624-00-013-102695. - Idaho National Engineering Laboratory, Army Reactors Experimental Area, Scoville, Butte County, ID

  13. 10 CFR 72.166 - Handling, storage, and shipping control.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ....166 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR THE INDEPENDENT STORAGE OF SPENT NUCLEAR FUEL, HIGH-LEVEL RADIOACTIVE WASTE, AND REACTOR-RELATED GREATER THAN CLASS C... protective environments, such as inert gas atmosphere, and specific moisture content and temperature...

  14. 40 CFR 98.166 - Data reporting requirements.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Hydrogen Production § 98.166 Data reporting requirements. In... paragraph (a): (1) Unit identification number and annual CO2 emissions. (2) Annual quantity of hydrogen... not used to measure CO2 emissions, then you must report the following information for each...

  15. 40 CFR 98.166 - Data reporting requirements.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Hydrogen Production § 98.166 Data reporting requirements. In... paragraph (a): (1) Unit identification number and annual CO2 emissions. (2) Annual quantity of hydrogen... the following information for each hydrogen production process unit: (1) Unit identification...

  16. 40 CFR 98.166 - Data reporting requirements.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Hydrogen Production § 98.166 Data reporting requirements. In... paragraph (a): (1) Unit identification number and annual CO2 emissions. (2) Annual quantity of hydrogen... not used to measure CO2 emissions, then you must report the following information for each...

  17. 40 CFR 98.166 - Data reporting requirements.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Hydrogen Production § 98.166 Data reporting requirements. In... paragraph (a): (1) Unit identification number and annual CO2 emissions. (2) Annual quantity of hydrogen... not used to measure CO2 emissions, then you must report the following information for each...

  18. 40 CFR 166.49 - Public notice of crisis exemptions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Public notice of crisis exemptions... PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Crisis Exemptions § 166.49 Public notice of crisis exemptions. (a) Periodic notices. At least quarterly,...

  19. 166. Photographic copy of original construction drawing dated September 5, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    166. Photographic copy of original construction drawing dated September 5, 1930 (from Record Group 115, Denver Branch of the National Archives, Denver). OWYHEE DAM-IRRIGATION OUTLET; DRAIN VENT AND PRESSURE PIPING INSTALLATION; 48 NEEDLE VALVES. - Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

  20. CD166 regulates human and murine hematopoietic stem cells and the hematopoietic niche

    PubMed Central

    Chitteti, Brahmananda Reddy; Kobayashi, Michihiro; Cheng, Yinghua; Zhang, Huajia; Poteat, Bradley A.; Broxmeyer, Hal E.; Pelus, Louis M.; Hanenberg, Helmut; Zollman, Amy; Kamocka, Malgorzata M.; Carlesso, Nadia; Cardoso, Angelo A.; Kacena, Melissa A.

    2014-01-01

    We previously showed that immature CD166+ osteoblasts (OB) promote hematopoietic stem cell (HSC) function. Here, we demonstrate that CD166 is a functional HSC marker that identifies both murine and human long-term repopulating cells. Both murine LSKCD48−CD166+CD150+ and LSKCD48−CD166+CD150+CD9+ cells, as well as human Lin−CD34+CD38−CD49f+CD166+ cells sustained significantly higher levels of chimerism in primary and secondary recipients than CD166− cells. CD166−/− knockout (KO) LSK cells engrafted poorly in wild-type (WT) recipients and KO bone marrow cells failed to radioprotect lethally irradiated WT recipients. CD166−/− hosts supported short-term, but not long-term WT HSC engraftment, confirming that loss of CD166 is detrimental to the competence of the hematopoietic niche. CD166−/− mice were significantly more sensitive to hematopoietic stress. Marrow-homed transplanted WT hematopoietic cells lodged closer to the recipient endosteum than CD166−/− cells, suggesting that HSC-OB homophilic CD166 interactions are critical for HSC engraftment. STAT3 has 3 binding sites on the CD166 promoter and STAT3 inhibition reduced CD166 expression, suggesting that both CD166 and STAT3 may be functionally coupled and involved in HSC competence. These studies illustrate the significance of CD166 in the identification and engraftment of HSC and in HSC-niche interactions, and suggest that CD166 expression can be modulated to enhance HSC function. PMID:24740813

  1. Luminescence properties of dysprosium doped di-calcium di-aluminium silicate phosphors

    NASA Astrophysics Data System (ADS)

    Tiwari, Geetanjali; Brahme, Nameeta; Sharma, Ravi; Bisen, D. P.; Sao, Sanjay K.; Tigga, Shalinta

    2016-08-01

    A Dysprosium doped di-calcium di-aluminium silicate phosphor emitting long-lasting white light was prepared and investigated. Phosphors were synthesized by combustion-assisted method. The effect of doping concentration on the crystal structure and luminescence properties of Ca2Al2SiO7:Dy3+ phosphors were investigated. The phase structure, surface morphology, particle size, elemental analysis was analyzed by using X-ray diffraction (XRD), transmission electron microscope (TEM), Scanning electron microscopy (SEM) and Energy dispersive X-ray spectroscopy (EDX) techniques. X-ray diffraction (XRD) profiles showed that all peaks could be attributed to the tetragonal Ca2Al2SiO7 phase when the sample was annealed at 1100 °C. The increase in TL intensity indicates that the concentration of traps increases with UV irradiation. Under the UV-excitation, the Thermoluminescence (TL) emission spectra of Ca2Al2SiO7:Dy3+ phosphor shows the characteristic emission of Dy3+ peaking at 484 nm (blue), 583 nm (yellow) and 680 nm (red), originating from the transitions of 4F9/2 → 6H15/2, 4F9/2 → 6H13/2 and 4F9/2 → 6H11/2. Photoluminescence (PL) decay has also reported and it indicates that Ca2Al2SiO7:Dy3+ phosphor contains fast decay and slow decay process. The peak of Mechanoluminescence (ML) intensity increases linearly with increasing impact velocity of the moving piston. The possible mechanism of Thermoluminescence (TL), Photoluminescence (PL) and Mechanoluminescence (ML) of this white light emitting long lasting phosphor is also investigated.

  2. Anions Influence the Relaxation Dynamics of Mono-μ3-OH-Capped Triangular Dysprosium Aggregates.

    PubMed

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

    2015-06-01

    A family of four Dy3 triangular circular helicates, namely, [Dy3(HL)3(μ3-OH)(CH3OH)2(H2O)4]Cl1.5(OH)0.5·0.5H2O (1), [Dy3(HL)3(μ3-OH)(CH3OH)3(H2O)2Cl]Cl·CH3OH (2), [Dy3(HL)3(μ3-OH)(CH3OH)3(H2O)2(NO3)](NO3) (3), and [Dy3(HL)3(μ3-OH)(CH3OH)4(ClO4)](ClO4) (4), were assembled by the reaction of a new acylhydrazone ligand H3L [(3-hydroxy)-N'-((8-hydroxyquinolin-2-yl)methylene)picolinohydrazide] with different dysprosium(III) salts. These compounds represent the first examples of μ-Oacylhydrazone-bridged triangular Dy3 SMMs reported to date. Alternating-current magnetic susceptibility measurements revealed that compounds 1 and 2 show typical SMM behavior with the occurrence of multiple relaxation processes, whereas frequency-dependent relaxation signals without χ″ peaks were observed in 3 and 4 under zero dc field. Such distinct dynamic behaviors are attributed to the different sizes of the terminal coordination solvent/anions (H2O, Cl(-), NO3(-), and ClO4(-) for 1-4, respectively) at the Dy3 site. Here, similar deviations from the ideal monocapped square-antiprismatic (C4v) geometry defined by SHAPE software were observed around local Dy centers in 1 and 2, whereas the situation was completely different in 3 and 4 as a result of the presence of relatively large anions in the limited space defined by three intercrossing rigid hydrazone ligands. PMID:25984586

  3. 25 CFR 166.418 - When is a grazing rental payment late?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 166.418 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.418 When is a grazing.... Late Rental Payment Collections...

  4. 25 CFR 166.418 - When is a grazing rental payment late?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 166.418 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.418 When is a grazing.... Late Rental Payment Collections...

  5. 25 CFR 166.418 - When is a grazing rental payment late?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 166.418 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.418 When is a grazing.... Late Rental Payment Collections...

  6. 25 CFR 166.418 - When is a grazing rental payment late?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 166.418 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.418 When is a grazing.... Late Rental Payment Collections...

  7. Radioisotope synoviorthesis with Holmium-166-chitosan complex in haemophilic arthropathy.

    PubMed

    Cho, Y J; Kim, K I; Chun, Y S; Rhyu, K H; Kwon, B K; Kim, D Y; Yoo, M C

    2010-07-01

    Radiosynoviorthesis is a safe and easy method for synovectomy in haemophilic arthropathy. Various agents have been used in radiosynoviorthesis, especially newly developed agent Holmium-166-chitosan complex has good clinical outcome. This study analysed clinical results and radiologic evaluation of radioisotope synoviorthesis using Holmium-166-chitosan complex in haemophilic arthropathy. From March 2001 to December 2003, 58 radiosynoviorthesis were performed in 53 haemophiliacs. The average age at procedure was 13.8 years. The Arnold and Hilgartner stage of the patients was from I to IV. Holmium-166-chitosan complex was injected in 31 ankle joints, 19 elbow joints and 8 knee joints. Average follow-up was 33 months since primary procedure. The range of motion of each joint, frequency of intra-articular bleeding and factor dose used were analysed for clinical assessment. There was no significant improvement of range of motion in affected joints. After procedure, the average frequency of bleeding of the elbow joint has decreased from 3.76 to 0.47 times per month, the knee joint from 5.87 to 1.12 times per month, and the ankle joint from 3.62 to 0.73 times per month respectively (P < 0.05). After treatment, the average coagulation factor dose injected was significantly decreased to 779.3 units per month from 2814.8 units per month before treatment (P < 0.001). Radioisotope synoviorthesis with Holmium-166-chitosan complex in haemophilic arthropathy is a very safe and simple procedure with the expectation of a satisfactory outcome without serious complication. It has excellent bleeding control effect on target joint and the need for substitution of coagulation factor concentrate can be reduced.

  8. 40 CFR 81.166 - South Central Coast Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 18 2014-07-01 2014-07-01 false South Central Coast Intrastate Air Quality Control Region. 81.166 Section 81.166 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.166...

  9. 33 CFR 165.166 - Safety Zone: Macy's July 4th Fireworks, East River, NY.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... CFR 165.23 apply. (2) No vessels, except the Staten Island Ferries, will be allowed to transit the... Fireworks, East River, NY. 165.166 Section 165.166 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.166 Safety Zone: Macy's July 4th Fireworks, East River, NY. (a) Regulated area. The following...

  10. 33 CFR 165.166 - Safety Zone: Macy's July 4th Fireworks, East River, NY.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... CFR 165.23 apply. (2) No vessels, except the Staten Island Ferries, will be allowed to transit the... Fireworks, East River, NY. 165.166 Section 165.166 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.166 Safety Zone: Macy's July 4th Fireworks, East River, NY. (a) Regulated area. The following...

  11. 33 CFR 165.166 - Safety Zone: Macy's July 4th Fireworks, East River, NY.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... CFR 165.23 apply. (2) No vessels, except the Staten Island Ferries, will be allowed to transit the... Fireworks, East River, NY. 165.166 Section 165.166 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.166 Safety Zone: Macy's July 4th Fireworks, East River, NY. (a) Regulated area. The following...

  12. 33 CFR 165.166 - Safety Zone: Macy's July 4th Fireworks, East River, NY.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... CFR 165.23 apply. (2) No vessels, except the Staten Island Ferries, will be allowed to transit the... Fireworks, East River, NY. 165.166 Section 165.166 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.166 Safety Zone: Macy's July 4th Fireworks, East River, NY. (a) Regulated area. The following...

  13. 33 CFR 165.166 - Safety Zone: Macy's July 4th Fireworks, East River, NY.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... CFR 165.23 apply. (2) No vessels, except the Staten Island Ferries, will be allowed to transit the... Fireworks, East River, NY. 165.166 Section 165.166 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.166 Safety Zone: Macy's July 4th Fireworks, East River, NY. (a) Regulated area. The following...

  14. 9 CFR 166.3 - Separation of swine from the garbage handling and treatment areas.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... handling and treatment areas. 166.3 Section 166.3 Animals and Animal Products ANIMAL AND PLANT HEALTH... Provisions § 166.3 Separation of swine from the garbage handling and treatment areas. (a) Access by swine to garbage handling and treatment areas shall be prevented by construction of facilities to exclude all...

  15. 9 CFR 166.5 - Licensed garbage-treatment facility standards.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Licensed garbage-treatment facility standards. 166.5 Section 166.5 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.5...

  16. 9 CFR 166.5 - Licensed garbage-treatment facility standards.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Licensed garbage-treatment facility standards. 166.5 Section 166.5 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.5...

  17. 33 CFR 166.200 - Shipping safety fairways and anchorage areas, Gulf of Mexico.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Navigation or danger markings must be installed as required by 33 CFR Subchapter C. (c) Special Conditions...: For Federal Register citations affecting § 166.200, see the List of CFR Sections Affected, which... anchorage areas, Gulf of Mexico. 166.200 Section 166.200 Navigation and Navigable Waters COAST...

  18. 25 CFR 166.809 - What happens after my unauthorized livestock or other property are impounded?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... property are impounded? 166.809 Section 166.809 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Trespass Actions § 166.809 What happens after my unauthorized livestock or other property are impounded? Following the impoundment of unauthorized livestock or...

  19. 25 CFR 166.810 - How do I redeem my impounded livestock or other property?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How do I redeem my impounded livestock or other property? 166.810 Section 166.810 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Trespass Actions § 166.810 How do I redeem my impounded livestock or other property?...

  20. 25 CFR 166.810 - How do I redeem my impounded livestock or other property?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false How do I redeem my impounded livestock or other property? 166.810 Section 166.810 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Trespass Actions § 166.810 How do I redeem my impounded livestock or other property?...

  1. 25 CFR 166.809 - What happens after my unauthorized livestock or other property are impounded?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... property are impounded? 166.809 Section 166.809 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Trespass Actions § 166.809 What happens after my unauthorized livestock or other property are impounded? Following the impoundment of unauthorized livestock or...

  2. 25 CFR 166.306 - Can the BIA adjust the grazing capacity?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Can the BIA adjust the grazing capacity? 166.306 Section 166.306 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Land and Operations Management § 166.306 Can the BIA adjust the grazing capacity? Yes. In...

  3. 25 CFR 166.302 - How is a range unit created?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How is a range unit created? 166.302 Section 166.302 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Land and Operations Management § 166.302 How is a range unit created? We create a range unit after we consult with...

  4. 25 CFR 166.300 - How is Indian agricultural land managed?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How is Indian agricultural land managed? 166.300 Section 166.300 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Land and Operations Management § 166.300 How is Indian agricultural land managed? Tribes,...

  5. 25 CFR 166.301 - How is Indian land for grazing purposes described?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How is Indian land for grazing purposes described? 166.301 Section 166.301 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Land and Operations Management § 166.301 How is Indian land for grazing purposes...

  6. 25 CFR 166.304 - Can there be more than one permit for each range unit?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Can there be more than one permit for each range unit? 166.304 Section 166.304 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Land and Operations Management § 166.304 Can there be more than one permit for each...

  7. 33 CFR 166.200 - Shipping safety fairways and anchorage areas, Gulf of Mexico.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Navigation or danger markings must be installed as required by 33 CFR Subchapter C. (c) Special Conditions...: For Federal Register citations affecting § 166.200, see the List of CFR Sections Affected, which... anchorage areas, Gulf of Mexico. 166.200 Section 166.200 Navigation and Navigable Waters COAST...

  8. 25 CFR 166.102 - Do tribal laws apply to permits?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false Do tribal laws apply to permits? 166.102 Section 166.102 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Tribal Policies and Laws Pertaining to Permits § 166.102 Do tribal laws apply to permits? Tribal laws will...

  9. 25 CFR 166.102 - Do tribal laws apply to permits?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Do tribal laws apply to permits? 166.102 Section 166.102 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Tribal Policies and Laws Pertaining to Permits § 166.102 Do tribal laws apply to permits? Tribal laws will...

  10. 25 CFR 166.102 - Do tribal laws apply to permits?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Do tribal laws apply to permits? 166.102 Section 166.102 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Tribal Policies and Laws Pertaining to Permits § 166.102 Do tribal laws apply to permits? Tribal laws will...

  11. 25 CFR 166.102 - Do tribal laws apply to permits?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true Do tribal laws apply to permits? 166.102 Section 166.102 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Tribal Policies and Laws Pertaining to Permits § 166.102 Do tribal laws apply to permits? Tribal laws will...

  12. 25 CFR 166.102 - Do tribal laws apply to permits?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false Do tribal laws apply to permits? 166.102 Section 166.102 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Tribal Policies and Laws Pertaining to Permits § 166.102 Do tribal laws apply to permits? Tribal laws will...

  13. 25 CFR 166.208 - How long is a permit term?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true How long is a permit term? 166.208 Section 166.208 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Permit Requirements General Requirements § 166.208 How long is a permit term? (a) The duration must be reasonable given...

  14. 25 CFR 166.208 - How long is a permit term?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How long is a permit term? 166.208 Section 166.208 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Permit Requirements General Requirements § 166.208 How long is a permit term? (a) The duration must be...

  15. 25 CFR 166.208 - How long is a permit term?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false How long is a permit term? 166.208 Section 166.208 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Permit Requirements General Requirements § 166.208 How long is a permit term? (a) The duration must be...

  16. 25 CFR 166.208 - How long is a permit term?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false How long is a permit term? 166.208 Section 166.208 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Permit Requirements General Requirements § 166.208 How long is a permit term? (a) The duration must be...

  17. 25 CFR 166.208 - How long is a permit term?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false How long is a permit term? 166.208 Section 166.208 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Permit Requirements General Requirements § 166.208 How long is a permit term? (a) The duration must be...

  18. 25 CFR 166.410 - When are grazing rental payments due?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false When are grazing rental payments due? 166.410 Section 166.410 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.410 When are...

  19. 25 CFR 166.410 - When are grazing rental payments due?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false When are grazing rental payments due? 166.410 Section 166.410 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.410 When are...

  20. 25 CFR 166.413 - To whom are grazing rental payments made?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false To whom are grazing rental payments made? 166.413 Section 166.413 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.413 To whom are...

  1. 25 CFR 166.410 - When are grazing rental payments due?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false When are grazing rental payments due? 166.410 Section 166.410 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.410 When are...

  2. 25 CFR 166.410 - When are grazing rental payments due?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false When are grazing rental payments due? 166.410 Section 166.410 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.410 When are...

  3. 25 CFR 166.409 - How is my grazing rental payment determined?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false How is my grazing rental payment determined? 166.409 Section 166.409 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.409 How is...

  4. 25 CFR 166.409 - How is my grazing rental payment determined?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true How is my grazing rental payment determined? 166.409 Section 166.409 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.409 How is...

  5. 25 CFR 166.410 - When are grazing rental payments due?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true When are grazing rental payments due? 166.410 Section 166.410 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.410 When are...

  6. 25 CFR 166.409 - How is my grazing rental payment determined?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How is my grazing rental payment determined? 166.409 Section 166.409 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.409 How is...

  7. 25 CFR 166.409 - How is my grazing rental payment determined?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false How is my grazing rental payment determined? 166.409 Section 166.409 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.409 How is...

  8. 25 CFR 166.413 - To whom are grazing rental payments made?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true To whom are grazing rental payments made? 166.413 Section 166.413 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.413 To whom are...

  9. 25 CFR 166.413 - To whom are grazing rental payments made?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false To whom are grazing rental payments made? 166.413 Section 166.413 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.413 To whom are...

  10. 25 CFR 166.413 - To whom are grazing rental payments made?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false To whom are grazing rental payments made? 166.413 Section 166.413 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.413 To whom are...

  11. 25 CFR 166.413 - To whom are grazing rental payments made?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false To whom are grazing rental payments made? 166.413 Section 166.413 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.413 To whom are...

  12. 25 CFR 166.409 - How is my grazing rental payment determined?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false How is my grazing rental payment determined? 166.409 Section 166.409 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments § 166.409 How is...

  13. 40 CFR 166.50 - Reporting and recordkeeping requirements for crisis exemption.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... requirements for crisis exemption. 166.50 Section 166.50 Protection of Environment ENVIRONMENTAL PROTECTION... EMERGENCY CONDITIONS Crisis Exemptions § 166.50 Reporting and recordkeeping requirements for crisis... a crisis exemption must be immediately reported to the Agency. (b) Final reports. (1) A...

  14. 40 CFR 166.50 - Reporting and recordkeeping requirements for crisis exemption.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... requirements for crisis exemption. 166.50 Section 166.50 Protection of Environment ENVIRONMENTAL PROTECTION... EMERGENCY CONDITIONS Crisis Exemptions § 166.50 Reporting and recordkeeping requirements for crisis... a crisis exemption must be immediately reported to the Agency. (b) Final reports. (1) A...

  15. 40 CFR 166.50 - Reporting and recordkeeping requirements for crisis exemption.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... requirements for crisis exemption. 166.50 Section 166.50 Protection of Environment ENVIRONMENTAL PROTECTION... EMERGENCY CONDITIONS Crisis Exemptions § 166.50 Reporting and recordkeeping requirements for crisis... a crisis exemption must be immediately reported to the Agency. (b) Final reports. (1) A...

  16. 40 CFR 166.50 - Reporting and recordkeeping requirements for crisis exemption.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... requirements for crisis exemption. 166.50 Section 166.50 Protection of Environment ENVIRONMENTAL PROTECTION... EMERGENCY CONDITIONS Crisis Exemptions § 166.50 Reporting and recordkeeping requirements for crisis... a crisis exemption must be immediately reported to the Agency. (b) Final reports. (1) A...

  17. 33 CFR 166.300 - Areas along the coast of California.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Areas along the coast of California. 166.300 Section 166.300 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Fairway Anchorages § 166.300 Areas along the coast of California. (a) Purpose. Fairways as described...

  18. 33 CFR 166.300 - Areas along the coast of California.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Areas along the coast of California. 166.300 Section 166.300 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Fairway Anchorages § 166.300 Areas along the coast of California. (a) Purpose. Fairways as described...

  19. 33 CFR 166.400 - Areas along the coast of Alaska.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Areas along the coast of Alaska. 166.400 Section 166.400 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.400 Areas along the coast of Alaska. (a) Purpose. Fairways, as described in this...

  20. 33 CFR 166.300 - Areas along the coast of California.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Areas along the coast of California. 166.300 Section 166.300 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Fairway Anchorages § 166.300 Areas along the coast of California. (a) Purpose. Fairways as described...

  1. 33 CFR 166.300 - Areas along the coast of California.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Areas along the coast of California. 166.300 Section 166.300 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Fairway Anchorages § 166.300 Areas along the coast of California. (a) Purpose. Fairways as described...

  2. 33 CFR 166.400 - Areas along the coast of Alaska.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Areas along the coast of Alaska. 166.400 Section 166.400 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.400 Areas along the coast of Alaska. (a) Purpose. Fairways, as described in this...

  3. 33 CFR 166.400 - Areas along the coast of Alaska.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Areas along the coast of Alaska. 166.400 Section 166.400 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.400 Areas along the coast of Alaska. (a) Purpose. Fairways, as described in this...

  4. 33 CFR 166.400 - Areas along the coast of Alaska.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Areas along the coast of Alaska. 166.400 Section 166.400 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.400 Areas along the coast of Alaska. (a) Purpose. Fairways, as described in this...

  5. 33 CFR 166.300 - Areas along the coast of California.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Areas along the coast of California. 166.300 Section 166.300 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Fairway Anchorages § 166.300 Areas along the coast of California. (a) Purpose. Fairways as described...

  6. 33 CFR 166.400 - Areas along the coast of Alaska.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Areas along the coast of Alaska. 166.400 Section 166.400 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... Anchorages § 166.400 Areas along the coast of Alaska. (a) Purpose. Fairways, as described in this...

  7. 9 CFR 166.3 - Separation of swine from the garbage handling and treatment areas.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Separation of swine from the garbage handling and treatment areas. 166.3 Section 166.3 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.3 Separation of swine from...

  8. 9 CFR 166.3 - Separation of swine from the garbage handling and treatment areas.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Separation of swine from the garbage handling and treatment areas. 166.3 Section 166.3 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.3 Separation of swine from...

  9. 9 CFR 166.5 - Licensed garbage-treatment facility standards.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Licensed garbage-treatment facility standards. 166.5 Section 166.5 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION General Provisions § 166.5 Licensed garbage-treatment facility...

  10. 40 CFR 166.50 - Reporting and recordkeeping requirements for crisis exemption.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... requirements for crisis exemption. 166.50 Section 166.50 Protection of Environment ENVIRONMENTAL PROTECTION... EMERGENCY CONDITIONS Crisis Exemptions § 166.50 Reporting and recordkeeping requirements for crisis... a crisis exemption must be immediately reported to the Agency. (b) Final reports. (1) A...

  11. 40 CFR 166.32 - Reporting and recordkeeping requirements for specific, quarantine, and public health exemptions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... requirements for specific, quarantine, and public health exemptions. 166.32 Section 166.32 Protection of... AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Specific, Quarantine, and Public Health Exemptions § 166.32 Reporting and recordkeeping requirements for specific, quarantine, and public...

  12. 40 CFR 166.32 - Reporting and recordkeeping requirements for specific, quarantine, and public health exemptions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... requirements for specific, quarantine, and public health exemptions. 166.32 Section 166.32 Protection of... AGENCIES FOR USE OF PESTICIDES UNDER EMERGENCY CONDITIONS Specific, Quarantine, and Public Health Exemptions § 166.32 Reporting and recordkeeping requirements for specific, quarantine, and public...

  13. Preparation and study of an f,f,f',f'' covalently linked tetranuclear hetero-trimetallic complex - a europium, terbium, dysprosium triad.

    PubMed

    Sørensen, Thomas Just; Tropiano, Manuel; Blackburn, Octavia A; Tilney, James A; Kenwright, Alan M; Faulkner, Stephen

    2013-01-28

    A heterotrimetallic tetranuclear lanthanide complex containing two dysprosium ions, a terbium ion and a europium ion has been prepared by coupling three kinetically stable complexes together using the Ugi reaction. The covalently linked trimetallic system exhibits luminescence from all the different lanthanide centres.

  14. A water-stable metal-organic framework of a zwitterionic carboxylate with dysprosium: a sensing platform for Ebolavirus RNA sequences.

    PubMed

    Qin, Liang; Lin, Li-Xian; Fang, Zhi-Ping; Yang, Shui-Ping; Qiu, Gui-Hua; Chen, Jin-Xiang; Chen, Wen-Hua

    2016-01-01

    We herein report a water-stable 3D dysprosium-based metal-organic framework (MOF) that can non-covalently interact with probe ss-DNA. The formed system can serve as an effective fluorescence sensing platform for the detection of complementary Ebolavirus RNA sequences with the detection limit of 160 pM. PMID:26502791

  15. Field and dilution effects on the magnetic relaxation behaviours of a 1D dysprosium(iii)-carboxylate chain built from chiral ligands.

    PubMed

    Han, Tian; Leng, Ji-Dong; Ding, You-Song; Wang, Yanyan; Zheng, Zhiping; Zheng, Yan-Zhen

    2015-08-14

    A one-dimensional dysprosium(iii)-carboxylate chain in which the Dy(III) ions sit in a pseudo D(2d)-symmetry environment is synthesized and shows different slow magnetic relaxation behaviours depending on the field and dilution effects. Besides, the chiral ligand introduces the additional functions of the Cotton effect and polarization for this compound. PMID:26159885

  16. 40 CFR 721.9511 - Silicic acid (H6SiO2O7), magnesium, strontium salt(1:1:2), dysprosium and europium-doped.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Silicic acid (H6SiO2O7), magnesium...), magnesium, strontium salt(1:1:2), dysprosium and europium-doped. (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as silicic acid (H6SiO2O7)...

  17. 40 CFR 721.9511 - Silicic acid (H6SiO2O7), magnesium, strontium salt(1:1:2), dysprosium and europium-doped.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 32 2012-07-01 2012-07-01 false Silicic acid (H6SiO2O7), magnesium...), magnesium, strontium salt(1:1:2), dysprosium and europium-doped. (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as silicic acid (H6SiO2O7)...

  18. 40 CFR 721.9511 - Silicic acid (H6SiO2O7), magnesium, strontium salt(1:1:2), dysprosium and europium-doped.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 32 2013-07-01 2013-07-01 false Silicic acid (H6SiO2O7), magnesium...), magnesium, strontium salt(1:1:2), dysprosium and europium-doped. (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as silicic acid (H6SiO2O7)...

  19. A water-stable metal-organic framework of a zwitterionic carboxylate with dysprosium: a sensing platform for Ebolavirus RNA sequences.

    PubMed

    Qin, Liang; Lin, Li-Xian; Fang, Zhi-Ping; Yang, Shui-Ping; Qiu, Gui-Hua; Chen, Jin-Xiang; Chen, Wen-Hua

    2016-01-01

    We herein report a water-stable 3D dysprosium-based metal-organic framework (MOF) that can non-covalently interact with probe ss-DNA. The formed system can serve as an effective fluorescence sensing platform for the detection of complementary Ebolavirus RNA sequences with the detection limit of 160 pM.

  20. Quantitative Monte Carlo-based holmium-166 SPECT reconstruction

    SciTech Connect

    Elschot, Mattijs; Smits, Maarten L. J.; Nijsen, Johannes F. W.; Lam, Marnix G. E. H.; Zonnenberg, Bernard A.; Bosch, Maurice A. A. J. van den; Jong, Hugo W. A. M. de; Viergever, Max A.

    2013-11-15

    Purpose: Quantitative imaging of the radionuclide distribution is of increasing interest for microsphere radioembolization (RE) of liver malignancies, to aid treatment planning and dosimetry. For this purpose, holmium-166 ({sup 166}Ho) microspheres have been developed, which can be visualized with a gamma camera. The objective of this work is to develop and evaluate a new reconstruction method for quantitative {sup 166}Ho SPECT, including Monte Carlo-based modeling of photon contributions from the full energy spectrum.Methods: A fast Monte Carlo (MC) simulator was developed for simulation of {sup 166}Ho projection images and incorporated in a statistical reconstruction algorithm (SPECT-fMC). Photon scatter and attenuation for all photons sampled from the full {sup 166}Ho energy spectrum were modeled during reconstruction by Monte Carlo simulations. The energy- and distance-dependent collimator-detector response was modeled using precalculated convolution kernels. Phantom experiments were performed to quantitatively evaluate image contrast, image noise, count errors, and activity recovery coefficients (ARCs) of SPECT-fMC in comparison with those of an energy window-based method for correction of down-scattered high-energy photons (SPECT-DSW) and a previously presented hybrid method that combines MC simulation of photopeak scatter with energy window-based estimation of down-scattered high-energy contributions (SPECT-ppMC+DSW). Additionally, the impact of SPECT-fMC on whole-body recovered activities (A{sup est}) and estimated radiation absorbed doses was evaluated using clinical SPECT data of six {sup 166}Ho RE patients.Results: At the same noise level, SPECT-fMC images showed substantially higher contrast than SPECT-DSW and SPECT-ppMC+DSW in spheres ≥17 mm in diameter. The count error was reduced from 29% (SPECT-DSW) and 25% (SPECT-ppMC+DSW) to 12% (SPECT-fMC). ARCs in five spherical volumes of 1.96–106.21 ml were improved from 32%–63% (SPECT-DSW) and 50%–80

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

    PubMed

    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 <24h old neonates for 48h in the case of D. pulex and with 2-9 days old offspring for 96h tests with Hyalella. The potential protective effect of cationic competition was tested with Ca (0.5-2.0mM), Na (0.5-2.0mM) and Mg (0.125-0.5mM). The effect of pH (6.5-8.0) and Suwannee River DOM complexation (at dissolved organic carbon (DOC) concentrations of 9 and 13mg 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 (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

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

    PubMed

    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 <24h old neonates for 48h in the case of D. pulex and with 2-9 days old offspring for 96h tests with Hyalella. The potential protective effect of cationic competition was tested with Ca (0.5-2.0mM), Na (0.5-2.0mM) and Mg (0.125-0.5mM). The effect of pH (6.5-8.0) and Suwannee River DOM complexation (at dissolved organic carbon (DOC) concentrations of 9 and 13mg 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 (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

  3. Dysprosium complexes with mono-/di-carboxylate ligands—From simple dimers to 2D and 3D frameworks

    SciTech Connect

    Zhang, Yingjie; Bhadbhade, Mohan; Scales, Nicholas; Karatchevtseva, Inna; Price, Jason R.; Lu, Kim; Lumpkin, Gregory R.

    2014-11-15

    Four dysprosium (Dy) single carboxylates, a formate, a propionate, a butyrate and an oxalate have been synthesized and structurally characterized. The structure of Dy(HCO{sub 2}){sub 3} (1) contains nine-fold coordinated Dy polyhedra in perfect tricapped trigonal prisms. They are linked through trigonal O atoms forming 1D pillars which are further linked together through tricapped O atoms into a 3D pillared metal organic framework. The network structure is stable up to 360 °C. The structure of [Dy{sub 2}(C{sub 2}O{sub 4}){sub 3}(H{sub 2}O){sub 6}]·2.5H{sub 2}O (2) contains nine-fold coordinated Dy polyhedra linking together through μ{sub 2}-bridging oxalate anions into a 2D hexagonal layered structure. Both [Dy{sub 2}(Pr){sub 6}(H{sub 2}O){sub 4}]·(HPr){sub 0.5} (3) [Pr=(C{sub 2}H{sub 5}CO{sub 2}){sup −1}] and [Dy{sub 2}(Bu){sub 6}(H{sub 2}O){sub 4}] (4) [Bu=(C{sub 3}H{sub 7}CO{sub 2}){sup −1}] have similar di-nuclear structures. The Raman vibration modes of the complexes have been investigated. - Graphical abstract: Four dysprosium (Dy) complexes with formate, propionate, butyrate and oxalate ligands have been synthesized and characterized. The Dy formato complex has a 3D pillared metal organic framework and the structure is stable up to 360 °C whilst the complexes with longer alkyl chained mono-carboxylates possess similar di-nuclear structures. The Dy oxalato complex has a 2D hexagonal (honeycomb-type) structure. Their Raman vibration modes have been investigated. - Highlights: • New Dysprosium complexes with formate, propionate, butyrate and oxalate ligands. • Crystal structures range from dimers to two and three dimensional frameworks. • Vibrational modes have been investigated and correlated to the structures. • The complexes are thermal robust and stable to over 300 °C.

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

    PubMed

    Sánchez Lafarga, Ana Karen; Pacheco Moisés, Fermín P; Gurinov, Andrey; Ortiz, Genaro Gabriel; Carbajal Arízaga, Gregorio Guadalupe

    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 488nm. 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.

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

    PubMed

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

    2013-08-01

    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). PMID:23952369

  6. An NCN-pincer ligand dysprosium single-ion magnet showing magnetic relaxation via the second excited state

    NASA Astrophysics Data System (ADS)

    Guo, Yun-Nan; Ungur, Liviu; Granroth, Garrett E.; Powell, Annie K.; Wu, Chunji; Nagler, Stephen E.; Tang, Jinkui; Chibotaru, Liviu F.; Cui, Dongmei

    2014-06-01

    Single-molecule magnets are compounds that exhibit magnetic bistability purely of molecular origin. The control of anisotropy and suppression of quantum tunneling to obtain a comprehensive picture of the relaxation pathway manifold, is of utmost importance with the ultimate goal of slowing the relaxation dynamics within single-molecule magnets to facilitate their potential applications. Combined ab initio calculations and detailed magnetization dynamics studies reveal the unprecedented relaxation mediated via the second excited state within a new DyNCN system comprising a valence-localized carbon coordinated to a single dysprosium(III) ion. The essentially C2v symmetry of the DyIII ion results in a new relaxation mechanism, hitherto unknown for mononuclear DyIII complexes, opening new perspectives for means of enhancing the anisotropy contribution to the spin-relaxation barrier.

  7. An NCN-pincer ligand dysprosium single-ion magnet showing magnetic relaxation via the second excited state

    PubMed Central

    Guo, Yun-Nan; Ungur, Liviu; Granroth, Garrett E.; Powell, Annie K.; Wu, Chunji; Nagler, Stephen E.; Tang, Jinkui; Chibotaru, Liviu F.; Cui, Dongmei

    2014-01-01

    Single-molecule magnets are compounds that exhibit magnetic bistability purely of molecular origin. The control of anisotropy and suppression of quantum tunneling to obtain a comprehensive picture of the relaxation pathway manifold, is of utmost importance with the ultimate goal of slowing the relaxation dynamics within single-molecule magnets to facilitate their potential applications. Combined ab initio calculations and detailed magnetization dynamics studies reveal the unprecedented relaxation mediated via the second excited state within a new DyNCN system comprising a valence-localized carbon coordinated to a single dysprosium(III) ion. The essentially C2v symmetry of the DyIII ion results in a new relaxation mechanism, hitherto unknown for mononuclear DyIII complexes, opening new perspectives for means of enhancing the anisotropy contribution to the spin-relaxation barrier. PMID:24969218

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

    PubMed

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

    2013-08-01

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

  9. Expression and Role of CD166 in the Chronic Kidney Disease

    PubMed Central

    Sun, Yan; Wang, Yiping; Cao, Qi; Yu, Hong; Zheng, Dong; Wang, Ya; Harris, David C. H.

    2015-01-01

    Background: CD166, an adhesion molecule of the immunoglobulin superfamily, is one of the crucial effectors that traffic lymphocytes into tissues. Till now, the expression and role of CD166 in the chronic kidney disease remains unknown. Objectives: In the present study, we are to examine the expression of CD166 in the chronic kidney disease, and to explore its function with CD4+ T cells. Materials and Methods: CD166 expression was tested by Flow Cytometry (FACS) in the primary macrophages stimulated with LPS. In vivo, the expression of CD166 and CD4 were examined in the kidney tissues of adriamycin-induced nephropathy (AN) mice by immnohistochemistry. Macrophages and lymphocytes were co-cultured, the interaction between CD166 and CD4 was tested by immunofluorescent staining. Furthermore, the effects of CD166 on the activation and proliferation of T cells were explored. Results: In this study, CD166 expression was found to be upregulated on activated macrophages and glomerular endothelia in the adriamycin-induced nephropathy (AN) mice and CD4+ T cells were increased with CD166 expression in the AN mice. The interaction between macrophages and CD4+ T cells indicated that CD166 played a key role in the recruitment of lymphocytes in the chronic kidney disease, and neither proliferation nor activation of T cells was affected by CD166. Conclusions: CD166 expressed on macrophages and endothelia in AN kidney, and the function was related to the recruitment of CD4+ T cells into inflamed kidney, indicating that CD166 may be a potential target for reducing the inflammatory infiltrates in the chronic kidney disease. PMID:26495101

  10. 25 CFR 166.602 - What form of bonds will the BIA accept?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true What form of bonds will the BIA accept? 166.602 Section 166.602 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Bonding and Insurance Requirements § 166.602 What form of bonds will the BIA accept? (a) We will only accept bonds in the following forms: (1) Cash;...

  11. 25 CFR 166.603 - If cash is submitted as a bond, how is it administered?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false If cash is submitted as a bond, how is it administered? 166.603 Section 166.603 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Bonding and Insurance Requirements § 166.603 If cash is submitted as a bond, how is it administered? If cash is submitted as a bond,...

  12. CD166 expression in dentigerous cyst, keratocystic odontogenic tumor and ameloblastoma

    PubMed Central

    Gorgizadeh, Ali

    2016-01-01

    Background CD166 is a glycoprotein of an immunoglobulin super family of adhesion molecules that has been associated with aggressive characteristics and high recurrence rate of tumors. Different odontogenic lesions exhibit considerable histological variation and different clinical behavior. In an attempt to clarify the mechanisms underlying this different behavior, the present study investigates the immunohistochemical expression of CD166 in these lesions. Material and Methods In this study 69 formalin-fixed, paraffin embedded tissue blocks of odontogenic lesion consist of 15 unicystic ameloblastoma (UA), 17 solid ameloblastoma (SA), 18 keratocystic odontogenic tumors (KCOT), and 19 dentigerous cysts (DC) were reviewed by immunohistochemistry for CD166 staining. Results In this study, CD166 immune staining was evident in all specimen groups except dentigerous cyst. In positive cases, protein localization was cytoplasmic and/or membranous. CD166 expression was seen in76.5% (13) of SA, 73.5% (11) of UA, and 66.7% (12) of KCOTs. Statistical analysis showed that CD166 expression levels were significantly higher in ameloblastoma (SA and UA) and KCOTs than dentigerous cyst (P <0.001), but there was no statistically significant difference between CD166 expression in the other groups (P>0.05). Conclusions This data demonstrates that overexpression of CD166 may have a role in the pathogenesis of ameloblastoma and KCOT. Key words:CD166, ameloblastoma, dentigerous cyst, odontogenic keratocyst. PMID:27398171

  13. The effects of the porous buffer layer and doping with dysprosium on internal stresses in the GaInP:Dy/por-GaAs/GaAs(100) heterostructures

    SciTech Connect

    Seredin, P. V.; Gordienko, N. N.; Glotov, A. V.; Zhurbina, I. A.; Domashevskaya, E. P.; Arsent'ev, I. N. Shishkov, M. V.

    2009-08-15

    In structures with a porous buffer layer, residual internal stresses caused by a mismatch between the crystal-lattice parameters of the epitaxial GaInP alloy and the GaAs substrate are redistributed to the porous layer that acts as a buffer and is conducive to disappearance of internal stresses. Doping of the epitaxial layer with dysprosium exerts a similar effect on the internal stresses in the film-substrate structure.

  14. 20 CFR 411.166 - Glossary of terms used in this subpart.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ....166 Section 411.166 Employees' Benefits SOCIAL SECURITY ADMINISTRATION THE TICKET TO WORK AND SELF... ticket to an Employment Network (EN) or a State VR agency that has elected to serve you as an EN, and you... § 411.167) in pursuit of a degree or certificate, or completed specified course requirements for...

  15. 50 CFR 216.166 - Modifications to the Letter of Authorization.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 50 Wildlife and Fisheries 9 2011-10-01 2011-10-01 false Modifications to the Letter of Authorization. 216.166 Section 216.166 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE MAMMALS Taking...

  16. 50 CFR 216.166 - Modifications to the Letter of Authorization.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 50 Wildlife and Fisheries 10 2012-10-01 2012-10-01 false Modifications to the Letter of Authorization. 216.166 Section 216.166 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE MAMMALS Taking...

  17. 18 CFR 16.6 - Notification procedures under section 15 of the Federal Power Act.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 18 Conservation of Power and Water Resources 1 2011-04-01 2011-04-01 false Notification procedures under section 15 of the Federal Power Act. 16.6 Section 16.6 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY REGULATIONS UNDER THE FEDERAL POWER...

  18. 9 CFR 166.3 - Separation of swine from the garbage handling and treatment areas.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Separation of swine from the garbage handling and treatment areas. 166.3 Section 166.3 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE SWINE HEALTH PROTECTION SWINE HEALTH PROTECTION...

  19. 25 CFR 166.227 - How can Indian land be removed from an existing permit?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... to such interests; (3) A tribe allocates grazing privileges for Indian land covered by your permit... 25 Indians 1 2010-04-01 2010-04-01 false How can Indian land be removed from an existing permit? 166.227 Section 166.227 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND...

  20. 46 CFR 166.10 - Course of study for engineering students.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Course of study for engineering students. 166.10 Section... AND APPROVAL OF NAUTICAL SCHOOL SHIPS § 166.10 Course of study for engineering students. The course of study for engineering students shall include (a) all the instruction necessary to fully equip...

  1. 25 CFR 166.212 - When may a permittee take possession of permitted Indian land?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false When may a permittee take possession of permitted Indian land? 166.212 Section 166.212 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND... possession of permitted Indian land? The permittee may take possession of permitted Indian land on the...

  2. 49 CFR 572.166 - Knees and knee impact test procedure.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 7 2010-10-01 2010-10-01 false Knees and knee impact test procedure. 572.166... TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) ANTHROPOMORPHIC TEST DEVICES Hybrid III Six-Year-Old Weighted Child Test Dummy § 572.166 Knees and knee impact test procedure....

  3. 20 CFR 411.166 - Glossary of terms used in this subpart.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 20 Employees' Benefits 2 2011-04-01 2011-04-01 false Glossary of terms used in this subpart. 411.166 Section 411.166 Employees' Benefits SOCIAL SECURITY ADMINISTRATION THE TICKET TO WORK AND SELF... ticket to an Employment Network (EN) or a State VR agency that has elected to serve you as an EN, and...

  4. 25 CFR 166.602 - What form of bonds will the BIA accept?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false What form of bonds will the BIA accept? 166.602 Section 166.602 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS... to demand immediate payment if the permittee defaults or fails to replace the LOC within 30...

  5. 25 CFR 166.602 - What form of bonds will the BIA accept?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false What form of bonds will the BIA accept? 166.602 Section 166.602 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS... to demand immediate payment if the permittee defaults or fails to replace the LOC within 30...

  6. 25 CFR 166.602 - What form of bonds will the BIA accept?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false What form of bonds will the BIA accept? 166.602 Section 166.602 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS... to demand immediate payment if the permittee defaults or fails to replace the LOC within 30...

  7. 25 CFR 166.602 - What form of bonds will the BIA accept?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false What form of bonds will the BIA accept? 166.602 Section 166.602 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS... to demand immediate payment if the permittee defaults or fails to replace the LOC within 30...

  8. 25 CFR 166.4 - What terms do I need to know?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false What terms do I need to know? 166.4 Section 166.4 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Purpose, Scope, and... sold for commercial benefit; (2) Domestic livestock, including cattle, sheep, goats, horses,...

  9. 25 CFR 166.4 - What terms do I need to know?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true What terms do I need to know? 166.4 Section 166.4 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Purpose, Scope, and... sold for commercial benefit; (2) Domestic livestock, including cattle, sheep, goats, horses,...

  10. 25 CFR 166.4 - What terms do I need to know?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false What terms do I need to know? 166.4 Section 166.4 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Purpose, Scope, and... sold for commercial benefit; (2) Domestic livestock, including cattle, sheep, goats, horses,...

  11. 25 CFR 166.4 - What terms do I need to know?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false What terms do I need to know? 166.4 Section 166.4 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Purpose, Scope, and... sold for commercial benefit; (2) Domestic livestock, including cattle, sheep, goats, horses,...

  12. 25 CFR 166.4 - What terms do I need to know?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false What terms do I need to know? 166.4 Section 166.4 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Purpose, Scope, and... sold for commercial benefit; (2) Domestic livestock, including cattle, sheep, goats, horses,...

  13. 40 CFR 166.20 - Application for a specific, quarantine, or public health exemption.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ..., or public health exemption. 166.20 Section 166.20 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS EXEMPTION OF FEDERAL AND STATE AGENCIES FOR USE OF PESTICIDES UNDER... arise concerning the application. (2) Description of the pesticide. The application shall contain...

  14. 26 CFR 1.166-10 - Reserve for guaranteed debt obligations.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 26 Internal Revenue 2 2011-04-01 2011-04-01 false Reserve for guaranteed debt obligations. 1.166....166-10 Reserve for guaranteed debt obligations. (a) Definitions. The following provisions apply for... regularly sells property in the ordinary course of the person's trade or business. (2) Guaranteed...

  15. 26 CFR 1.166-10 - Reserve for guaranteed debt obligations.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Reserve for guaranteed debt obligations. 1.166....166-10 Reserve for guaranteed debt obligations. (a) Definitions. The following provisions apply for... regularly sells property in the ordinary course of the person's trade or business. (2) Guaranteed...

  16. 25 CFR 166.314 - Can a permittee apply a conservation practice on permitted Indian land?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Can a permittee apply a conservation practice on permitted Indian land? 166.314 Section 166.314 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Land and Operations Management Conservation Practices and...

  17. 25 CFR 166.316 - Can a permittee construct improvements on permitted Indian land?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Can a permittee construct improvements on permitted Indian land? 166.316 Section 166.316 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Land and Operations Management Conservation Practices and Improvements §...

  18. 46 CFR 166.10 - Course of study for engineering students.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Course of study for engineering students. 166.10 Section... AND APPROVAL OF NAUTICAL SCHOOL SHIPS § 166.10 Course of study for engineering students. The course of study for engineering students shall include (a) all the instruction necessary to fully equip...

  19. 40 CFR 166.22 - Consultation with the Secretary of Agriculture and Governors of the States.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Agriculture and Governors of the States. 166.22 Section 166.22 Protection of Environment ENVIRONMENTAL... Consultation with the Secretary of Agriculture and Governors of the States. The Agency, in determining whether or not such emergency conditions exist, shall consult with the Secretary of Agriculture and...

  20. DXD motif-dependent and -independent effects of the chlamydia trachomatis cytotoxin CT166.

    PubMed

    Bothe, Miriam; Dutow, Pavel; Pich, Andreas; Genth, Harald; Klos, Andreas

    2015-02-01

    The Gram-negative, intracellular bacterium Chlamydia trachomatis causes acute and chronic urogenital tract infection, potentially leading to infertility and ectopic pregnancy. The only partially characterized cytotoxin CT166 of serovar D exhibits a DXD motif, which is important for the enzymatic activity of many bacterial and mammalian type A glycosyltransferases, leading to the hypothesis that CT166 possess glycosyltransferase activity. CT166-expressing HeLa cells exhibit actin reorganization, including cell rounding, which has been attributed to the inhibition of the Rho-GTPases Rac/Cdc42. Exploiting the glycosylation-sensitive Ras(27H5) antibody, we here show that CT166 induces an epitope change in Ras, resulting in inhibited ERK and PI3K signaling and delayed cell cycle progression. Consistent with the hypothesis that these effects strictly depend on the DXD motif, CT166 with the mutated DXD motif causes neither Ras-ERK inhibition nor delayed cell cycle progression. In contrast, CT166 with the mutated DXD motif is still capable of inhibiting cell migration, suggesting that CT166 with the mutated DXD motif cannot be regarded as inactive in any case. Taken together, CT166 affects various fundamental cellular processes, strongly suggesting its importance for the intracellular survival of chlamydia. PMID:25690695

  1. DXD Motif-Dependent and -Independent Effects of the Chlamydia trachomatis Cytotoxin CT166

    PubMed Central

    Bothe, Miriam; Dutow, Pavel; Pich, Andreas; Genth, Harald; Klos, Andreas

    2015-01-01

    The Gram-negative, intracellular bacterium Chlamydia trachomatis causes acute and chronic urogenital tract infection, potentially leading to infertility and ectopic pregnancy. The only partially characterized cytotoxin CT166 of serovar D exhibits a DXD motif, which is important for the enzymatic activity of many bacterial and mammalian type A glycosyltransferases, leading to the hypothesis that CT166 possess glycosyltransferase activity. CT166-expressing HeLa cells exhibit actin reorganization, including cell rounding, which has been attributed to the inhibition of the Rho-GTPases Rac/Cdc42. Exploiting the glycosylation-sensitive Ras(27H5) antibody, we here show that CT166 induces an epitope change in Ras, resulting in inhibited ERK and PI3K signaling and delayed cell cycle progression. Consistent with the hypothesis that these effects strictly depend on the DXD motif, CT166 with the mutated DXD motif causes neither Ras-ERK inhibition nor delayed cell cycle progression. In contrast, CT166 with the mutated DXD motif is still capable of inhibiting cell migration, suggesting that CT166 with the mutated DXD motif cannot be regarded as inactive in any case. Taken together, CT166 affects various fundamental cellular processes, strongly suggesting its importance for the intracellular survival of chlamydia. PMID:25690695

  2. 40 CFR 86.166-12 - Method for calculating emissions due to air conditioning leakage.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... to air conditioning leakage. 86.166-12 Section 86.166-12 Protection of Environment ENVIRONMENTAL... for calculating emissions due to air conditioning leakage. This section describes procedures used to determine a refrigerant leakage rate in grams per year from vehicle-based air conditioning units....

  3. 40 CFR 86.166-12 - Method for calculating emissions due to air conditioning leakage.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... to air conditioning leakage. 86.166-12 Section 86.166-12 Protection of Environment ENVIRONMENTAL... for calculating emissions due to air conditioning leakage. This section describes procedures used to determine a refrigerant leakage rate in grams per year from vehicle-based air conditioning units....

  4. 25 CFR 166.401 - How does the BIA establish grazing rental rates?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false How does the BIA establish grazing rental rates? 166.401 Section 166.401 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination...

  5. 25 CFR 166.401 - How does the BIA establish grazing rental rates?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false How does the BIA establish grazing rental rates? 166.401 Section 166.401 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination...

  6. 25 CFR 166.414 - What forms of grazing rental payments are acceptable?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false What forms of grazing rental payments are acceptable? 166.414 Section 166.414 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments §...

  7. 25 CFR 166.401 - How does the BIA establish grazing rental rates?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false How does the BIA establish grazing rental rates? 166.401 Section 166.401 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination...

  8. 25 CFR 166.408 - Is the grazing rental rate established by the BIA adjusted periodically?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Is the grazing rental rate established by the BIA adjusted periodically? 166.408 Section 166.408 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental...

  9. 25 CFR 166.408 - Is the grazing rental rate established by the BIA adjusted periodically?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true Is the grazing rental rate established by the BIA adjusted periodically? 166.408 Section 166.408 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental...

  10. 25 CFR 166.414 - What forms of grazing rental payments are acceptable?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false What forms of grazing rental payments are acceptable? 166.414 Section 166.414 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments §...

  11. 25 CFR 166.414 - What forms of grazing rental payments are acceptable?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true What forms of grazing rental payments are acceptable? 166.414 Section 166.414 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments §...

  12. 25 CFR 166.401 - How does the BIA establish grazing rental rates?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false How does the BIA establish grazing rental rates? 166.401 Section 166.401 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination...

  13. 25 CFR 166.401 - How does the BIA establish grazing rental rates?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true How does the BIA establish grazing rental rates? 166.401 Section 166.401 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Rate Determination...

  14. 25 CFR 166.414 - What forms of grazing rental payments are acceptable?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false What forms of grazing rental payments are acceptable? 166.414 Section 166.414 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments §...

  15. 25 CFR 166.414 - What forms of grazing rental payments are acceptable?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false What forms of grazing rental payments are acceptable? 166.414 Section 166.414 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental Payments §...

  16. 25 CFR 166.408 - Is the grazing rental rate established by the BIA adjusted periodically?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Is the grazing rental rate established by the BIA adjusted periodically? 166.408 Section 166.408 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental...

  17. 25 CFR 166.408 - Is the grazing rental rate established by the BIA adjusted periodically?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false Is the grazing rental rate established by the BIA adjusted periodically? 166.408 Section 166.408 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental...

  18. 25 CFR 166.408 - Is the grazing rental rate established by the BIA adjusted periodically?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false Is the grazing rental rate established by the BIA adjusted periodically? 166.408 Section 166.408 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Grazing Rental Rates, Payments, and Late Payment Collections Rental...

  19. 40 CFR 166.22 - Consultation with the Secretary of Agriculture and Governors of the States.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Consultation with the Secretary of Agriculture and Governors of the States. 166.22 Section 166.22 Protection of Environment ENVIRONMENTAL... Consultation with the Secretary of Agriculture and Governors of the States. The Agency, in determining...

  20. 40 CFR 166.22 - Consultation with the Secretary of Agriculture and Governors of the States.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Consultation with the Secretary of Agriculture and Governors of the States. 166.22 Section 166.22 Protection of Environment ENVIRONMENTAL... Consultation with the Secretary of Agriculture and Governors of the States. The Agency, in determining...

  1. 40 CFR 166.22 - Consultation with the Secretary of Agriculture and Governors of the States.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 25 2012-07-01 2012-07-01 false Consultation with the Secretary of Agriculture and Governors of the States. 166.22 Section 166.22 Protection of Environment ENVIRONMENTAL... Consultation with the Secretary of Agriculture and Governors of the States. The Agency, in determining...

  2. 40 CFR 166.22 - Consultation with the Secretary of Agriculture and Governors of the States.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Consultation with the Secretary of Agriculture and Governors of the States. 166.22 Section 166.22 Protection of Environment ENVIRONMENTAL... Consultation with the Secretary of Agriculture and Governors of the States. The Agency, in determining...

  3. 38 CFR 17.166 - Dental services for hospital or nursing home patients and domiciled members.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... hospital or nursing home patients and domiciled members. 17.166 Section 17.166 Pensions, Bonuses, and... hospital or nursing home patients and domiciled members. Persons receiving hospital, nursing home, or... are professionally determined necessary to the patients' or members' overall hospital, nursing...

  4. 38 CFR 17.166 - Dental services for hospital or nursing home patients and domiciled members.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... hospital or nursing home patients and domiciled members. 17.166 Section 17.166 Pensions, Bonuses, and... hospital or nursing home patients and domiciled members. Persons receiving hospital, nursing home, or... are professionally determined necessary to the patients' or members' overall hospital, nursing...

  5. 38 CFR 17.166 - Dental services for hospital or nursing home patients and domiciled members.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... hospital or nursing home patients and domiciled members. 17.166 Section 17.166 Pensions, Bonuses, and... hospital or nursing home patients and domiciled members. Persons receiving hospital, nursing home, or... are professionally determined necessary to the patients' or members' overall hospital, nursing...

  6. 38 CFR 17.166 - Dental services for hospital or nursing home patients and domiciled members.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... hospital or nursing home patients and domiciled members. 17.166 Section 17.166 Pensions, Bonuses, and... hospital or nursing home patients and domiciled members. Persons receiving hospital, nursing home, or... are professionally determined necessary to the patients' or members' overall hospital, nursing...

  7. 38 CFR 17.166 - Dental services for hospital or nursing home patients and domiciled members.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... hospital or nursing home patients and domiciled members. 17.166 Section 17.166 Pensions, Bonuses, and... hospital or nursing home patients and domiciled members. Persons receiving hospital, nursing home, or... are professionally determined necessary to the patients' or members' overall hospital, nursing...

  8. 17 CFR 1.66 - No-action positions with respect to floor traders.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... respect to floor traders. 1.66 Section 1.66 Commodity and Securities Exchanges COMMODITY FUTURES TRADING... respect to floor traders. (a) Notwithstanding any other provision of law, if a contract market submits to the National Futures Association by April 26, 1993 a list of floor traders who were granted...

  9. 17 CFR 1.66 - No-action positions with respect to floor traders.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... respect to floor traders. 1.66 Section 1.66 Commodity and Securities Exchanges COMMODITY FUTURES TRADING... respect to floor traders. (a) Notwithstanding any other provision of law, if a contract market submits to the National Futures Association by April 26, 1993 a list of floor traders who were granted...

  10. 25 CFR 166.316 - Can a permittee construct improvements on permitted Indian land?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Can a permittee construct improvements on permitted Indian land? 166.316 Section 166.316 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND....316 Can a permittee construct improvements on permitted Indian land? Improvements may be...

  11. 46 CFR 166.10 - Course of study for engineering students.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Course of study for engineering students. 166.10 Section... AND APPROVAL OF NAUTICAL SCHOOL SHIPS § 166.10 Course of study for engineering students. The course of study for engineering students shall include (a) all the instruction necessary to fully equip...

  12. 46 CFR 166.10 - Course of study for engineering students.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Course of study for engineering students. 166.10 Section... AND APPROVAL OF NAUTICAL SCHOOL SHIPS § 166.10 Course of study for engineering students. The course of study for engineering students shall include (a) all the instruction necessary to fully equip...

  13. 46 CFR 166.10 - Course of study for engineering students.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Course of study for engineering students. 166.10 Section... AND APPROVAL OF NAUTICAL SCHOOL SHIPS § 166.10 Course of study for engineering students. The course of study for engineering students shall include (a) all the instruction necessary to fully equip...

  14. Quarry detection monitoring wells completion report WP-166

    SciTech Connect

    Not Available

    1991-09-01

    The purpose of this report is to document the activities undertaken during implementation of Work Package 166, Quarry Detection Monitoring Wells, for the Weldon Spring Site Remedial action project, Weldon Spring, Missouri. The subcontract specifications should be consulted for specific details regarding this work effort. Analytical parameters for soil samples collected for all but one borehole were analyzed for uranium, thorium, cyanide, nitroaromatics, and all Hazardous Substance List parameters including volatiles, semivolatiles, pesticides, polychlorinated biphenyls (PCBs) and metals. No soil samples were collected at other borehole as per specifications. With Z exceptions, uranium results for all boreholes sampled were at background levels. Nitroaromatics and cyanide were not detected in any of the samples collected. Volatile and semivolatile organics were not detected in the soil samples collected from the boreholes, with the exception of common lab contaminants such as methylene chloride, toluene, acetone, and pathalates. All metals results were either within their natural background ranges or below the detection limit of the instrument. PCB's were not detected within any of the boreholes. Pesticides detected (aldrin and methoxychlor) at one borehole near the surface may be attributed to previous spraying of pesticides on the highway right-of-way. In conclusion, the analytical results show that only uranium was detected in significant quantities; all other results were below the detection limit, very near the detection limit, or within natural background ranges. 1 fig.

  15. Dysprosium complexes with mono-/di-carboxylate ligands-From simple dimers to 2D and 3D frameworks

    NASA Astrophysics Data System (ADS)

    Zhang, Yingjie; Bhadbhade, Mohan; Scales, Nicholas; Karatchevtseva, Inna; Price, Jason R.; Lu, Kim; Lumpkin, Gregory R.

    2014-11-01

    Four dysprosium (Dy) single carboxylates, a formate, a propionate, a butyrate and an oxalate have been synthesized and structurally characterized. The structure of Dy(HCO2)3 (1) contains nine-fold coordinated Dy polyhedra in perfect tricapped trigonal prisms. They are linked through trigonal O atoms forming 1D pillars which are further linked together through tricapped O atoms into a 3D pillared metal organic framework. The network structure is stable up to 360 °C. The structure of [Dy2(C2O4)3(H2O)6]·2.5H2O (2) contains nine-fold coordinated Dy polyhedra linking together through μ2-bridging oxalate anions into a 2D hexagonal layered structure. Both [Dy2(Pr)6(H2O)4]·(HPr)0.5 (3) [Pr=(C2H5CO2)-1] and [Dy2(Bu)6(H2O)4] (4) [Bu=(C3H7CO2)-1] have similar di-nuclear structures. The Raman vibration modes of the complexes have been investigated.

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

    PubMed

    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. PMID:25016246

  17. Epitaxial dysprosium phosphide grown by gas-source and solid-source MBE on gallium arsenide substrates

    NASA Astrophysics Data System (ADS)

    Sadwick, L. P.; Lee, P. P.; Patel, M.; Nikols, M.; Hwu, R. J.; Shield, J. E.; Streit, D. C.; Brehmer, D.; McCormick, K.; Allen, S. J.; Gedridge, R. W.

    1996-07-01

    We report the first known study of the growth of epitaxial dysprosium phosphide (DyP) grown on gallium arsenide (GaAs). DyP is lattice matched to GaAs, with the room-temperature mismatch being less than 0.01%. We have grown DyP on GaAs by gas-source and by solid-source molecular beam epitaxy using custom-designed group V thermal cracker cells and group III high temperature effusion cells. X-ray diffraction results show the DyP epilayer to be (001) single crystal on GaAs(001) substrate. Electrical and optical measurements performed to date are inconclusive as to whether DyP is a semi-metal or a semiconductor with a small band gap. The undoped films are n-type with measured electron concentrations on the order of 5 × 10 19-6 × 10 20cm -3 with mobilities of 1-10 cm 2/V · s. {DyP}/{GaAs} is stable in air with no apparent oxidation taking place, even after months of exposure to ambient untreated air. Material and surface science properties measured for {DyP}/{GaAs} include Hall measurements, 2ϑ and double-crystal X-ray diffraction spectra and photothermal deflection spectroscopy.

  18. Isolation of 163Ho from dysprosium target material by HPLC for neutrino mass measurements

    SciTech Connect

    Mocko, Veronika; Taylor, Wayne  A.; Nortier, Francois M.; Engle, Jonathan  W.; Barnhart, Todd  E.; Nickles, Robert  J.; Pollington, Anthony  D.; Kunde, Gerd  J.; Rabin, Michael  W.; Birnbaum, Eva  R.

    2015-04-29

    The rare earth isotope 163Ho is of interest for neutrino mass measurements. This report describes the isolation of 163Ho 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, 163Ho was separated from the bulk Dy via cation-exchange high performance liquid chromatography using 70 mmol dm–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 163Ho/165Ho ratio, 163Ho and the residual Dy content. The HPLC purification process resulted in a decontamination factor 1.4E5 for Dy. As a result, the isolated Ho fraction contained 24.8 ±1.3 ng of 163Ho corresponding to holmium recovery of 72 ± 3%.

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

    NASA Astrophysics Data System (ADS)

    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).

  20. 25 CFR 166.808 - How are trespassers notified if their unauthorized livestock or other property are to be impounded?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... livestock or other property are to be impounded? 166.808 Section 166.808 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER GRAZING PERMITS Trespass Actions § 166.808 How are trespassers notified if their unauthorized livestock or other property are to be impounded? (a) If the trespass is...