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Sample records for yttrium 88 target

  1. Process for separation of zirconium-88, rubidium-83 and yttrium-88

    DOEpatents

    Heaton, Richard C. (Los Alamos, NM); Jamriska, Sr., David J. (Los Alamos, NM); Taylor, Wayne A. (Los Alamos, NM)

    1994-01-01

    A process for selective separation of strontium-82 and strontium-85 from proton irradiated molybdenum targets is provided and includes dissolving the molybdenum target in a hydrogen peroxide solution to form a first ion-containing solution, passing the first ion-containing solution through a first cationic resin whereby ions selected from the group consisting of molybdenum, niobium, technetium, selenium, vanadium, arsenic, germanium, zirconium and rubidium remain in the first ion-containing solution while ions selected from the group consisting of rubidium, zinc, beryllium, cobalt, iron, manganese, chromium, strontium, yttrium and zirconium are selectively adsorbed by the first resin, contacting the first resin with an acid solution capable of stripping adsorbed ions from the first cationic exchange resin whereby the adsorbed ions are removed from the first resin to form a second ion-containing solution, evaporating the second ion-containing solution for time sufficient to remove substantially all of the acid and water from the second ion-containing solution whereby a residue remains, dissolving the residue from the evaporated second-ion containing solution in a dilute acid to form a third ion-containing solution, said third ion-containing solution having an acid molarity adapted to permit said ions to be adsorbed by a cationic exchange resin, passing the third ion-containing solution through a second cationic resin whereby the ions are adsorbed by the second resin, contacting the second resin with a dilute sulfuric acid solution whereby the adsorbed ions selected from the group consisting of rubidium, zinc, beryllium, cobalt, iron, manganese, chromium, and zirconium are selectively removed from the second resin, and contacting the second resin with a dilute acid solution whereby the adsorbed strontium ions are selectively removed. Zirconium, rubidium, and yttrium radioisotopes can also be recovered with additional steps.

  2. Non-Target Activity Detection by Post-Radioembolization Yttrium-90 PET/CT: Image Assessment Technique and Case Examples

    PubMed Central

    Kao, Yung Hsiang; Tan, Andrew E. H.; Lo, Richard H. G.; Tay, Kiang Hiong; Tan, Bien Soo; Chow, Pierce K. H.; Ng, David C. E.; Goh, Anthony S. W.

    2013-01-01

    High resolution yttrium-90 (90Y) imaging of post-radioembolization microsphere biodistribution may be achieved by conventional positron emission tomography with integrated computed tomography (PET/CT) scanners that have time-of-flight capability. However, reconstructed 90Y PET/CT images have high background noise, making non-target activity detection technically challenging. This educational article describes our image assessment technique for non-target activity detection by 90Y PET/CT, which qualitatively overcomes the problem of background noise. We present selected case examples of non-target activity in untargeted liver, stomach, gallbladder, chest wall, and kidney, supported by angiography and 90Y bremsstrahlung single-photon emission computed tomography with integrated computed tomography (SPECT/CT) or technetium-99m macroaggregated albumin SPECT/CT. PMID:24551594

  3. K88 Fimbrial Adhesin Targeting of Microspheres Containing Gentamicin Made with Albumin Glycated with Lactose

    PubMed Central

    Sarabia-Sainz, Andre-i; Sarabia-Sainz, Hector Manuel; Ramos-Clamont Montfort, Gabriela; Mata-Haro, Veronica; Guzman-Partida, Ana María; Guzman, Roberto; Garcia-Soto, Mariano; Vazquez-Moreno, Luz

    2015-01-01

    The formulation and characterization of gentamicin-loaded microspheres as a delivery system targeting enterotoxigenic Escherichia coli K88 (E. coli K88) was investigated. Glycated albumin with lactose (BSA-glucose-? (4-1) galactose) was used as the microsphere matrix (MS-Lac) and gentamicin included as the transported antibiotic. The proposed target strategy was that exposed galactoses of MS-Lac could be specifically recognized by E. coli K88 adhesins, and the delivery of gentamicin would inhibit bacterial growth. Lactosylated microspheres (MS-Lac1, MS-Lac2 and MS-Lac3) were obtained using a water-in-oil emulsion, containing gentamicin, followed by crosslinking with different concentrations of glutaraldehyde. Electron microscopy displayed spherical particles with a mean size of 10–17 µm. In vitro release of gentamicin from MS-Lac was best fitted to a first order model, and the antibacterial activity of encapsulated and free gentamicin was comparable. MS-Lac treatments were recognized by plant galactose-specific lectins from Ricinus communis and Sophora japonica and by E. coli K88 adhesins. Results indicate MS-Lac1, produced with 4.2 mg/mL of crosslinker, as the best treatment and that lactosylated microsphere are promising platforms to obtain an active, targeted system against E. coli K88 infections. PMID:26389896

  4. K88 Fimbrial Adhesin Targeting of Microspheres Containing Gentamicin Made with Albumin Glycated with Lactose.

    PubMed

    Sarabia-Sainz, Andre-I; Sarabia-Sainz, Hector Manuel; Montfort, Gabriela Ramos-Clamont; Mata-Haro, Veronica; Guzman-Partida, Ana María; Guzman, Roberto; Garcia-Soto, Mariano; Vazquez-Moreno, Luz

    2015-01-01

    The formulation and characterization of gentamicin-loaded microspheres as a delivery system targeting enterotoxigenic Escherichia coli K88 (E. coli K88) was investigated. Glycated albumin with lactose (BSA-glucose-? (4-1) galactose) was used as the microsphere matrix (MS-Lac) and gentamicin included as the transported antibiotic. The proposed target strategy was that exposed galactoses of MS-Lac could be specifically recognized by E. coli K88 adhesins, and the delivery of gentamicin would inhibit bacterial growth. Lactosylated microspheres (MS-Lac1, MS-Lac2 and MS-Lac3) were obtained using a water-in-oil emulsion, containing gentamicin, followed by crosslinking with different concentrations of glutaraldehyde. Electron microscopy displayed spherical particles with a mean size of 10-17 µm. In vitro release of gentamicin from MS-Lac was best fitted to a first order model, and the antibacterial activity of encapsulated and free gentamicin was comparable. MS-Lac treatments were recognized by plant galactose-specific lectins from Ricinus communis and Sophora japonica and by E. coli K88 adhesins. Results indicate MS-Lac1, produced with 4.2 mg/mL of crosslinker, as the best treatment and that lactosylated microsphere are promising platforms to obtain an active, targeted system against E. coli K88 infections. PMID:26389896

  5. The evolution of melasma therapy: targeting melanosomes using low-fluence Q-switched neodymium-doped yttrium aluminium garnet lasers.

    PubMed

    Kauvar, Arielle N B

    2012-06-01

    Melasma is an acquired disorder of pigmentation that commonly affects women with phototypes III-V, and it has a negative impact on the quality of life in affected individuals. It presents clinically as symmetric tan or brown patches on the face, most often involving the forehead, cheeks, perioral region, and periorbital region. On histologic examination, there is increased melanin in the epidermis and/or an increased number of melanosomes in the dermis, with a normal number of highly melanized and dendritic melanocytes. The mainstay of treatment is the use of sunscreen along with topical medications that suppress melanogenesis. Clearance is usually incomplete and recurrences or exacerbations are frequent, probably because of the poor efficacy in clearing dermal melanosomes. Treatment with high-energy pigment-specific lasers, ablative resurfacing lasers, and fractional lasers results in an unacceptably high rate of postinflammatory hyper- and hypopigmentation and rebound melasma. Recently, promising results have been achieved with low-fluence Q-switched neodymium-doped yttrium aluminium garnet laser treatment, which can selectively target dermal melanosomes without producing inflammation or epidermal damage, in all skin phototypes. This article reviews the current treatment modalities for melasma, the rationale for using and the clinical results of combination therapy with low-fluence Q-switched neodymium-doped yttrium aluminium garnet lasers. PMID:22640433

  6. Metals Fact Sheet: Yttrium

    SciTech Connect

    1992-09-01

    Yttrium is a metallic element usually included among the rare earth metals, which it resembles chemically and with which it usually occurs in minerals. Yttrium was named after the village of Ytterby in Sweden---the element was discovered in a quarry near the village. This article discusses sources of the element, the world market for the element, and various applications of the material.

  7. Theranostic Imaging of Yttrium-90

    PubMed Central

    Wright, Chadwick L.; Zhang, Jun; Tweedle, Michael F.; Knopp, Michael V.; Hall, Nathan C.

    2015-01-01

    This paper overviews Yttrium-90 (90Y) as a theranostic and nuclear medicine imaging of 90Y radioactivity with bremsstrahlung imaging and positron emission tomography. In addition, detection and optical imaging of 90Y radioactivity using Cerenkov luminescence will also be reviewed. Methods and approaches for qualitative and quantitative 90Y imaging will be briefly discussed. Although challenges remain for 90Y imaging, continued clinical demand for predictive imaging response assessment and target/nontarget dosimetry will drive research and technical innovation to provide greater clinical utility of 90Y as a theranostic agent. PMID:26106608

  8. Theranostic Imaging of Yttrium-90.

    PubMed

    Wright, Chadwick L; Zhang, Jun; Tweedle, Michael F; Knopp, Michael V; Hall, Nathan C

    2015-01-01

    This paper overviews Yttrium-90 ((90)Y) as a theranostic and nuclear medicine imaging of (90)Y radioactivity with bremsstrahlung imaging and positron emission tomography. In addition, detection and optical imaging of (90)Y radioactivity using Cerenkov luminescence will also be reviewed. Methods and approaches for qualitative and quantitative (90)Y imaging will be briefly discussed. Although challenges remain for (90)Y imaging, continued clinical demand for predictive imaging response assessment and target/nontarget dosimetry will drive research and technical innovation to provide greater clinical utility of (90)Y as a theranostic agent. PMID:26106608

  9. Diffusivities of hydrogen in yttrium and yttrium alloys

    SciTech Connect

    Fisher, P.W.; Tanase, M.

    1983-01-01

    Diffusivities of hydrogen in yttrium, yttrium-niobium (Y-Nb) alloy (3:7), yttrium-niobium (Y-Nb) composite (3:7), and yttrium-thorium (Y-Th) alloy (4:1) in the Sieverts region were measured by gas absorption in the temperature range from 960 to 1160/sup 0/K. The diffusivity of hydrogen in yttrium was found to be D = 300 exp(-160,000/RT), where R = 8.314 J.K/sup -1/.mol/sup -1/. Above 1000 K, diffusivities are in the following order: D(Y-Nb composite) > D(Y-Nb alloy) > D(Y-Th alloy) > D(Y), where D(Y-Nb composite) = 2.4 D(Y) and D(Y-Nb alloy) = 1.5 D(Y). Below 1000 K, effective diffusivities of the alloys become quite erratic and fall below those for yttrium.

  10. Astatine and Yttrium Resonant Ionization Laser Spectroscopy

    NASA Astrophysics Data System (ADS)

    Teigelhoefer, Andrea

    Providing intense, contamination-free beams of rare isotopes to experiments is a challenging task. At isotope separator on-line facilities such as ISAC at TRIUMF, the choice of production target and ion source are key to the successful beam delivery. Due to their element-selectivity, high efficiency and versatility, resonant ionization laser ion sources (RILIS) gain increasingly in importance. The spectroscopic data available are typically incomplete in the region of excited- and autoionizing atomic states. In order to find the most efficient ionization scheme for a particular element, further spectroscopy is often required. The development of efficient laser resonant ionization schemes for yttrium and astatine is presented in this thesis. For yttrium, two ionization schemes with comparable relative intensities were found. Since for astatine, only two transitions were known, the focus was to provide data on atomic energy levels using resonance ionization spectroscopy. Altogether 41 previously unknown astatine energy levels were found.

  11. Measurement of cross-sections of yttrium (n,xn) threshold reactions by means of gamma spectroscopy

    E-print Network

    Chudoba, Petr; Wagner, V; Vrzalova, J; Svoboda, O; Majerle, M; Stefanik, M; Suchopar, M; Kugler, A; Bielewicz, M; Strugalska-Gola, E; Szuta, M; Hervas, D; Herman, T; Geier, B

    2014-01-01

    Neutron activation and gamma spectrometry are usable also f or the determination of cross-sections of different neutron reactions. We have studied the cross-sections of yttrium (n, x n) threshold reactions using quasi-monoenergetic neutron source based on the reaction on 7 Li target at Nuclear Physics Institute of ASCR in Rez. Yttrium (n, x n) threshold reactions are suitable candidates for fast neutron field measurement by activation detectors. Fast neutron field monitoring is necessary already today at a wide range of accelerator facilities and will gain on importance in future fast reactors of generation IV, accelerator transmutation systems or fusion reactors. The knowledge of the cross-sections is crucial for such purpose. Unfortunately, the cross-section is sufficiently known only for 89 Y(n,2n) 88 Y reaction. For higher orders of reactions there are almost no experimental data. Special attention was paid to t he 89 Y(n,3n) 87 Y reaction. The cross-sections of both 89 Y(n,2n) 88 Y and 89 Y(n,3n) 87 Y re...

  12. Apoferritin-Templated Yttrium Phosphate Nanoparticle Conjugates for Radioimmunotherapy of Cancers

    SciTech Connect

    Wu, Hong; Wang, Jun; Wang, Zheming; Fisher, Darrell R.; Lin, Yuehe

    2008-05-01

    We report a templated-synthetic approach based on apoferritin to prepare radionuclide nanoparticle (NP) conjugates. Non-radioactive yttrium (89Y) was used as model target and surrogate for radioyttrium (90Y) to prepare the nanoparticle conjugate. The center cavity and multiple channel structure of apoferritin offer a fast and facile method to precipitate yttrium phosphate by diffusing yttrium and phosphate ions into the cavity of apofrritin, resulting a core-shell nanocomposite. The yttrium phosphate/apoferritin nanoparticle was functionalized with biotin for further application. The synthesized nanoparticle was characterized by transmission electron microscopy (TEM) and x-ray photoelectron spectroscopy (XPS). We found that the resulting nanoparticles were uniform in size, with a diameter of around 8 nm. We tested the pre-targeting capability of the biotin-modified yttrium phosphate/apoferritin nanoparticle (yttrium phosphate/apoferritin nanoparticle) conjugate with streptavidin-modified magnetic beads and with aid of biotin-modified fluorecein isothiocyanate (FITC) tracer. This work shows that an yttrium phosphate NP conjugate provides a fast, simple and efficient method to prepare radioactive yttrium conjugate for applications in radioimmunotherapy of cancer.

  13. Side Effects of Yttrium-90 Radioembolization

    PubMed Central

    Riaz, Ahsun; Awais, Rafia; Salem, Riad

    2014-01-01

    Limited therapeutic options are available for hepatic malignancies. Image guided targeted therapies have established their role in management of primary and secondary hepatic malignancies. Radioembolization with yttrium-90 (90Y) microspheres is safe and efficacious for treatment of hepatic malignancies. The tumoricidal effect of radioembolization is predominantly due to radioactivity and not ischemia. This article will present a comprehensive review of the side effects that have been associated with radioembolization using 90Y microspheres. Some of the described side effects are associated with all transarterial procedures. Side effects specific to radioembolization will also be discussed in detail. Methods to decrease the incidence of these potential side effects will also be discussed. PMID:25120955

  14. Yttrium-90 Radioembolization as a Palliative Treatment for Liver Tumors: A Case Study.

    PubMed

    Maas, Lisa

    2015-10-01

    The best chance of cure for patients with liver cancer is surgical removal, but many tumors are too large or invasive. In addition, chemotherapy is frequently unsuccessful in this patient population. A case study is featured involving a patient determined to be a candidate for Yttrium-90 radioembolization, a minimally invasive liver-directed treatment used to target primary and metastatic liver tumors by delivering radioactive microspheres directly to the tumor. This article provides an introduction to the procedure, as well as practical information for nurses caring for patients with liver cancer following Yttrium-90 radioembolization.At a GlanceYttrium-90 radioembolization allows larger radiation doses to be used without affecting healthy tissues.An outpatient procedure, Yttrium-90 radioembolization results in fewer side effects than standard treatment.?Although Yttrium-90 radioembolization can extend and improve quality of life, its intent is palliative, not curative. PMID:26414581

  15. Combinatorial pulsed laser deposition of doped yttrium iron garnet films on yttrium aluminium garnet

    SciTech Connect

    Sposito, A. Eason, R. W.; Gregory, S. A.; Groot, P. A. J. de

    2014-02-07

    We investigate the crystalline growth of yttrium iron garnet (YIG) films doped with bismuth (Bi) and cerium (Ce) by combinatorial pulsed laser deposition, co-ablating a YIG target and either a Bi{sub 2}O{sub 3} or a CeO{sub 2} target, for applications in microwave and optical communications. Substrate temperature is critical for crystalline growth of YIG with simultaneous inclusion of Bi in the garnet lattice, whereas Ce is not incorporated in the garnet structure, but forms a separate CeO{sub 2} phase.

  16. Synthesis and evaluation of bombesin derivatives on the basis of pan-bombesin peptides labeled with indium-111, lutetium-177, and yttrium-90 for targeting bombesin receptor-expressing tumors.

    PubMed

    Zhang, Hanwen; Chen, Jianhua; Waldherr, Christian; Hinni, Karin; Waser, Beatrice; Reubi, Jean Claude; Maecke, Helmut R

    2004-09-15

    Bombesin receptors are overexpressed on a variety of human tumors like prostate, breast, and lung cancer. The aim of this study was to develop radiolabeled (Indium-111, Lutetium-177, and Yttrium-90) bombesin analogues with affinity to the three bombesin receptor subtypes for targeted radiotherapy. The following structures were synthesized: diethylenetriaminepentaacetic acid-gamma-aminobutyric acid-[D-Tyr6, beta-Ala11, Thi13, Nle14] bombesin (6-14) (BZH1) and 1,4,7,10-tetraazacyclododecane-N,N',N",N"' -tetraacetic acid-gamma-aminobutyric acid-[D-Tyr6, beta-Ala11, Thi13, Nle14] bombesin (6-14) (BZH2). [111In]-BZH1 and in particular [90Y]-BZH2 were shown to have high affinity to all three human bombesin receptor subtypes with binding affinities in the nanomolar range. In human serum metabolic cleavage was found between beta-Ala11 and His12 with an approximate half-life of 2 hours. The metabolic breakdown was inhibited by EDTA and beta-Ala11-His12 (carnosine) indicating that carnosinase is the active enzyme. Both 111In-labeled peptides were shown to internalize into gastrin-releasing peptide-receptor-positive AR4-2J and PC-3 cells with similar high rates, which were independent of the radiometal. The biodistribution studies of [111In]-BZH1 and [111In]-BZH2 ([177Lu]-BZH2) in AR4-2J tumor-bearing rats showed specific and high uptake in gastrin-releasing peptide-receptor-positive organs and in the AR4-2J tumor. A fast clearance from blood and all of the nontarget organs except the kidneys was found. These radiopeptides were composed of the first pan-bombesin radioligands, which show great promise for the early diagnosis of tumors bearing not only gastrin-releasing peptide-receptors but also the other two bombesin receptor subtypes and may be of use in targeted radiotherapy of these tumors. PMID:15374988

  17. Measurement of Cross-sections of Yttrium (n,xn) Threshold Reactions by Means of Gamma Spectroscopy

    NASA Astrophysics Data System (ADS)

    Chudoba, P.; Kilim, S.; Wagner, V.; Vrzalova, J.; Svoboda, O.; Majerle, M.; Stefanik, M.; Suchopar, M.; Kugler, A.; Bielewicz, M.; Strugalska-Gola, E.; Szuta, M.; Hervas, D.; Herman, T.; Geier, B.

    Neutron activation and gamma spectrometry are usable also for the determination of cross-sections of different neutron reactions. We have studied the cross-section of yttrium (n,xn) threshold reactions using quasi mono-energetic neutron source based on the reaction on 7Li target at Nuclear Physics Institute of ASCR in Rez. Yttrium (n,xn) threshold reactions are suitable candidates for fast neutron field measurement by activation detectors. Fast neutron field monitoring is necessary already today at a wide range of accelerator facilities and will gain on importance in future fast reactors of generation IV, accelerator transmutation systems or fusion reactors. The knowledge of the cross-sections is crucial for such purpose. Unfortunately, the cross-section is sufficiently known only for 89Y(n,2n)88Y reaction. For higher orders of reactions there are almost no experimental data. Special attention was paid to the 89Y(n,3n)87Y reaction. The nuclei are produced, both in the ground state with half-life 79.8 hours and in the isomeric state with half-life 13.38 hours. The isomer decays mainly through the gamma transition to the ground state, the beta decay of the excited state is negligible within our accuracy. The cross-sections of both 87Y productions were analyzed.

  18. 21 CFR 500.88 - Regulatory method.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 6 2014-04-01 2014-04-01 false Regulatory method. 500.88 Section 500.88 Food and... § 500.88 Regulatory method. (a) The sponsor shall submit for evaluation and validation a regulatory... regulatory method must be able to confirm the identity of the marker residue in the target tissue at...

  19. 21 CFR 500.88 - Regulatory method.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 6 2010-04-01 2010-04-01 false Regulatory method. 500.88 Section 500.88 Food and... § 500.88 Regulatory method. (a) The sponsor shall submit for evaluation and validation a regulatory... regulatory method must be able to confirm the identity of the marker residue in the target tissue at...

  20. 21 CFR 500.88 - Regulatory method.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 6 2012-04-01 2012-04-01 false Regulatory method. 500.88 Section 500.88 Food and... § 500.88 Regulatory method. (a) The sponsor shall submit for evaluation and validation a regulatory... regulatory method must be able to confirm the identity of the marker residue in the target tissue at...

  1. 21 CFR 500.88 - Regulatory method.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 6 2011-04-01 2011-04-01 false Regulatory method. 500.88 Section 500.88 Food and... § 500.88 Regulatory method. (a) The sponsor shall submit for evaluation and validation a regulatory... regulatory method must be able to confirm the identity of the marker residue in the target tissue at...

  2. 21 CFR 500.88 - Regulatory method.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 6 2013-04-01 2013-04-01 false Regulatory method. 500.88 Section 500.88 Food and... § 500.88 Regulatory method. (a) The sponsor shall submit for evaluation and validation a regulatory... regulatory method must be able to confirm the identity of the marker residue in the target tissue at...

  3. Electronic Transitions of Yttrium Monophosphide

    NASA Astrophysics Data System (ADS)

    Cheung, Allan S. C.; Li, Biu Wa; Chan, MAN-CHOR

    2015-06-01

    Electronic transition spectrum of the yttrium monophosphide (YP) molecule in the visible region between 715 nm and 880 nm has been recorded using laser ablation/reaction free-jet expansion and laser induced fluorescence spectroscopy. The YP molecule was produced by reacting laser - ablated yttrium atoms with PH3 seeded in argon. Thirteen vibrational bands were analyzed and five electronic transition systems have identified, namely the [12.2] ? = 3 - X3 ?_2 transition, [13.3] ? = 3 - X3 ?_2 transition, [13.4] ? = 3 - X3 ?_2 transition, [13.5] ? = 3 - X3 ?_2 transition, and [13.4] ? = 2 - X3 ?_2 transition. Least squares fits of the measured rotational lines yielded molecular constants for the ground and excited states. The ground state symmetry and the bond length r_0 of the YP molecule have been determined to be a X3 ?_2 state and 2.4413 Å respectively in this work. A molecular orbital energy level diagram has been used to help the assignment of the observed electronic states. This work represents the first experimental investigation of the spectrum of the YP molecule.

  4. Electronic transitions of yttrium monophosphide

    NASA Astrophysics Data System (ADS)

    Li, Biu Wa; Chan, Man-Chor; Cheung, A. S.-C.

    2015-11-01

    The electronic transition spectrum of the yttrium monophosphide (YP) molecule in the near infrared region between 715 nm and 880 nm has been recorded using laser ablation/reaction free-jet expansion and laser induced fluorescence spectroscopy. The YP molecule was produced by reacting laser - ablated yttrium atoms with PH3 gas seeded in argon. Eleven vibrational bands were analyzed and six electronic transitions have been identified, namely the [12.17] ? = 3 - X3?2, [13.27] ? = 3 - X3?2, [13.44] ? = 3 - X3?2, [13.46] ? = 3 - X3?2 and [13.40] ? = 2 - X3?2 transitions and a [13.69] ? = 3 - a1?2 transition. Least squares fits of the measured rotational lines yielded molecular constants for the ground and excited states. The ground state has been determined to be a X3?2 state and the bond length ro and vibrational separation, ?G1/2, were determined to be 2.4413 Å and 390.77 cm-1 respectively. A molecular orbital energy level diagram has been used to aid the assignment of the observed electronic states. This work represents the first experimental investigation of the electronic spectrum of the YP molecule.

  5. Rare earths, the lanthanides, yttrium and scandium

    USGS Publications Warehouse

    Hedrick, J.B.

    2006-01-01

    In 2005, rare earths were not mined in the United States. The major supplier, Molycorp, continued to maintain a large stockpile of rare-earth concentrates and compounds. Consumption decreased of refined rare-earth products. The United States remained a major importer and exporter of rare earths in 2005. During the same period, yttrium was not mined or refined in the US. Hence, supply of yttrium compounds for refined yttrium products came from China, France and Japan. Scandium was not also mined. World production was primarily in China, Russia and Ukraine. Demand for rare earths in 2006 is expected to be closely tied to economic conditions in the US.

  6. Absolute measurements of fast neutrons using yttrium

    SciTech Connect

    Roshan, M. V.; Springham, S. V.; Rawat, R. S.; Lee, P.; Krishnan, M.

    2010-08-15

    Yttrium is presented as an absolute neutron detector for pulsed neutron sources. It has high sensitivity for detecting fast neutrons. Yttrium has the property of generating a monoenergetic secondary radiation in the form of a 909 keV gamma-ray caused by inelastic neutron interaction. It was calibrated numerically using MCNPX and does not need periodic recalibration. The total yttrium efficiency for detecting 2.45 MeV neutrons was determined to be f{sub n}{approx}4.1x10{sup -4} with an uncertainty of about 0.27%. The yttrium detector was employed in the NX2 plasma focus experiments and showed the neutron yield of the order of 10{sup 8} neutrons per discharge.

  7. Rare earths, the lanthanides, yttrium and scandium

    USGS Publications Warehouse

    Bedinger, G.; Bleiwas, D.

    2012-01-01

    In 2011, rare earths were recovered from bastnasite concentrates at the Mountain Pass Mine in California. Consumption of refined rare-earth products decreased in 2011 from 2010. U.S. rare-earth imports originated primarily from China, with lesser amounts from Austria, Estonia, France and Japan. The United States imported all of its demand for yttrium metal and yttrium compounds, with most of it originating from China. Scandium was imported in various forms and processed domestically.

  8. The Parasitic Worm Product ES-62 Targets Myeloid Differentiation Factor 88–Dependent Effector Mechanisms to Suppress Antinuclear Antibody Production and Proteinuria in MRL/lpr Mice

    PubMed Central

    Rodgers, David T; McGrath, Mairi A; Pineda, Miguel A; Al-Riyami, Lamyaa; Rzepecka, Justyna; Lumb, Felicity; Harnett, William; Harnett, Margaret M

    2015-01-01

    Objective The hygiene hypothesis suggests that parasitic helminths (worms) protect against the development of autoimmune disease via a serendipitous side effect of worm-derived immunomodulators that concomitantly promote parasite survival and limit host pathology. The aim of this study was to investigate whether ES-62, a phosphorylcholine-containing glycoprotein secreted by the filarial nematode Acanthocheilonema viteae, protects against kidney damage in an MRL/lpr mouse model of systemic lupus erythematosus (SLE). Methods MRL/lpr mice progressively produce high levels of autoantibodies, and the resultant deposition of immune complexes drives kidney pathology. The effects of ES-62 on disease progression were assessed by measurement of proteinuria, assessment of kidney histology, determination of antinuclear antibody (ANA) production and cytokine levels, and flow cytometric analysis of relevant cellular populations. Results ES-62 restored the disrupted balance between effector and regulatory B cells in MRL/lpr mice by inhibiting plasmablast differentiation, with a consequent reduction in ANA production and deposition of immune complexes and C3a in the kidneys. Moreover, by reducing interleukin-22 production, ES-62 may desensitize downstream effector mechanisms in the pathogenesis of kidney disease. Highlighting the therapeutic importance of resetting B cell responses, adoptive transfer of purified splenic B cells from ES-62–treated MRL/lpr mice mimicked the protection afforded by the helminth product. Mechanistically, this reflects down-regulation of myeloid differentiation factor 88 expression by B cells and also kidney cells, resulting in inhibition of pathogenic cross-talk among Toll-like receptor–, C3a-, and immune complex–mediated effector mechanisms. Conclusion This study provides the first demonstration of protection against kidney pathology by a parasitic worm–derived immunomodulator in a model of SLE and suggests therapeutic potential for drugs based on the mechanism of action of ES-62. PMID:25546822

  9. Discrete Yttrium(III) Complexes as Lactide Polymerization Catalysts

    E-print Network

    Hagadorn, John R.

    Discrete Yttrium(III) Complexes as Lactide Polymerization Catalysts Bradley M. Chamberlain report the synthesis and full characterization of novel yttrium complexes ligated to the multidentate similar dinuclear structures for the two com- plexes.10 Each yttrium is ligated by three macrocyclic

  10. Europium-doped yttrium silicate nanophosphors prepared by flame synthesis

    E-print Network

    Bernhard, Stefan

    Europium-doped yttrium silicate nanophosphors prepared by flame synthesis Xiao Qin a,*, Yiguang Ju; accepted 7 November 2006 Available online 22 December 2006 Abstract Europium-doped yttrium silicate (Y2SiO5 and photoluminescence intensity of Y2SiO5:Eu3+ nanophosphors are strongly affected by the ratio of silicon to yttrium

  11. Phase Diagram for Magnon Condensate in Yttrium Iron Garnet Film

    E-print Network

    Phase Diagram for Magnon Condensate in Yttrium Iron Garnet Film Fuxiang Li1 , Wayne M. Saslow1) at room temperature in films of Yttrium Iron Garnet (YIG). Unlike other quasiparticle BEC systems­9 and magnons10,11 . Among these, BEC of magnons in films of Yttrium Iron Garnet (YIG), discovered by the group

  12. Magnetostatic wave dynamic magnetization response in yttrium iron garnet films

    E-print Network

    Patton, Carl

    Magnetostatic wave dynamic magnetization response in yttrium iron garnet films Mincho A. Tsankov magnetization DMM amplitude of magnetostatic waves in yttrium iron garnet films at 5­6 GHz has been measured-thick, single-crystal yttrium iron garnet films. A pulsed frequency-swept microwave signal at 5­6 GHz was used

  13. SU-E-J-88: Margin Reduction of Level II/III Planning Target Volume for Image-Guided Simultaneous Integrated Boost Head-And-Neck Treatment

    SciTech Connect

    Can, S; Neylon, J; Qi, S; Santhanam, A; Low, D

    2014-06-01

    Purpose: To investigate the feasibility of improved normal tissue sparing for head-and-neck (H'N) image-guided radiotherapy (IGRT) by employing tighter CTV-to-PTV margins for target level II/III though a GPU-based deformable image registration and dose accumulation framework. Methods: Ten H'N simultaneous integrated boost cases treated on TomoTherapy were retrospectively analyzed. Weekly kVCT scans in addition to daily MVCT scans were acquired for each patient. Reduced margin plans were generated with 0- mm margin for level II and III PTV (while 3-5 mm margin for PTV1) and compared with the standard margin plan using 3-5mm margin to all CTV1-3 (reference plan). An in-house developed GPU-based 3D image deformation tool was used to register and deform the weekly KVCTs with the planning CT and determine the delivered mean/minimum/maximum dose, dose volume histograms (DVHs), etc. Results: Compared with the reference plans, the averaged cord maximum, the right and left parotid doses reduced by 22.7 %, 16.5 %, and 9 % respectively in the reduced margin plans. The V95 for PTV2 and PTV3 were found within 2 and 5% between the reference and tighter margin plans. For the reduced margin plans, the averaged cumulative mean doses were consistent with the planned dose for PTV1, PTV2 and PTV3 within 1.5%, 1.7% and 1.4%. Similar dose variations of the delivered dose were seen for the reference and tighter margin plans. The delivered maximum and mean doses for the cord were 3.55 % and 2.37% higher than the planned doses; a 5 % higher cumulative mean dose for the parotids was also observed for the delivered dose than the planned doses in both plans. Conclusion: By imposing tighter CTV-to-PTV margins for level II and III targets for H'N irradiation, acceptable cumulative doses were achievable when coupled with weekly kVCT guidance while improving normal structure sparing.

  14. 40 CFR 721.10627 - Yttrium borate phosphate vanadate with europium and additional dopants (generic).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 2014-07-01 false Yttrium borate phosphate vanadate with europium...Chemical Substances § 721.10627 Yttrium borate phosphate vanadate with europium...chemical substance identified generically as yttrium borate phosphate vanadate with...

  15. 40 CFR 721.10627 - Yttrium borate phosphate vanadate with europium and additional dopants (generic).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 2013-07-01 false Yttrium borate phosphate vanadate with europium...Chemical Substances § 721.10627 Yttrium borate phosphate vanadate with europium...chemical substance identified generically as yttrium borate phosphate vanadate with...

  16. Safety of Repeated Yttrium-90 Radioembolization

    SciTech Connect

    Lam, Marnix G. E. H.; Louie, John D.; Iagaru, Andrei H.; Goris, Michael L.; Sze, Daniel Y.

    2013-10-15

    Purpose: Repeated radioembolization (RE) treatments carry theoretically higher risk of radiation-induced hepatic injury because of the liver's cumulative memory of previous exposure. We performed a retrospective safety analysis on patients who underwent repeated RE. Methods: From 2004 to 2011, a total of 247 patients were treated by RE. Eight patients (5 men, 3 women, age range 51-71 years) underwent repeated treatment of a targeted territory, all with resin microspheres (SIR-Spheres; Sirtex, Lane Cove, Australia). Adverse events were graded during a standardized follow-up. In addition, the correlation between the occurrence of RE-induced liver disease (REILD) and multiple variables was investigated in univariate and multivariate analyses in all 247 patients who received RE. Results: Two patients died shortly after the second treatment (at 84 and 107 days) with signs and symptoms of REILD. Both patients underwent whole liver treatment twice (cumulative doses 3.08 and 2.66 GBq). The other 6 patients demonstrated only minor toxicities after receiving cumulative doses ranging from 2.41 to 3.88 GBq. All patients experienced objective tumor responses. In the whole population, multifactorial analysis identified three risk factors associated with REILD: repeated RE (p = 0.036), baseline serum total bilirubin (p = 0.048), and baseline serum aspartate aminotransferase (p = 0.043). Repeated RE proved to be the only independent risk factor for REILD in multivariate analysis (odds ratio 9.6; p = 0.002). Additionally, the administered activity per target volume (in GBq/L) was found to be an independent risk factor for REILD, but only in whole liver treatments (p = 0.033). Conclusion: The risk of REILD appears to be elevated for repeated RE. Objective tumor responses were observed, but establishment of safety limits will require improvement in dosimetric measurement and prediction.

  17. Synthesis and structural characterisation of an yttrium-alkyl-alkylidene 

    E-print Network

    Arnold, Polly; Green, J.C.; McMaster, J.; Liddle, S.T.

    2008-04-01

    The first structurally authenticated yttrium-alkyl-alkylidene is reported; structural, spectroscopic, and theoretical analyses show that whilst the yttrium-alkylidene bond is short, it possesses a bond order less than one and is comparable to the Y-C...

  18. Terbium photoluminescence in yttrium aluminum garnet xerogels

    SciTech Connect

    Maliarevich, G. K.; Gaponenko, N. V. Mudryi, A. V.; Drozdov, Yu. N.; Stepikhova, M. V.; Stepanova, E. A.

    2009-02-15

    Based on a colloidal solution containing terbium, yttrium, and aluminum metal ions, a powder was synthesized and films of terbium-doped yttrium aluminum garnet Tb{sub 0.15}Y{sub 2.85}Al{sub 5}O{sub 12} were grown on single-crystal silicon and porous anodic alumina. Annealing of the sample in a temperature range from 200-1100 deg. C results in an increase in the photoluminescence intensity in the wavelength range from 480-640 nm, which is caused by Tb{sup 3+} ion intra-atomic transitions {sup 5}D{sub 4}{sup {yields}}{sup 7}F{sub j} (j = 3, 4, 5, 6). Annealing at 900 deg. C and higher temperatures gives rise to low-intensity photoluminescence bands in the region of 667 and 681 nm, which correspond to transitions {sup 5}D{sub 4}{sup {yields}}{sup 7}F{sub 0}, {sup 5}D{sub 4}{sup {yields}}{sup 7}F{sub 1}, and room-temperature Stark term splitting, which suggests the existence of a crystalline environment of Tb{sup 3+} ions. The FWHM of spectral lines in the region of 543 nm decreases from {approx}10 to {approx}(2-3) nm as the xerogel annealing temperature is increased from 700 to 900 deg. C and higher. Three bands with maxima at 280, 330, and 376 nm, which correspond to Tb{sup 3+} ion transitions {sup 7}F{sub 6}{sup {yields}}{sup 5}I{sub 8}, {sup 5}L{sub 6}, {sup 5}G{sub 6}, {sup 5}D{sub 3}, are observed in the photoluminescence excitation spectra of the studied structures for the emission wavelength at 543 nm. X-ray diffraction detected the formation of a crystalline phase for a terbium-doped yttrium aluminum garnet powder after annealing at 1100 deg. C.

  19. Cerium and yttrium oxide nanoparticles are neuroprotective

    SciTech Connect

    Schubert, David . E-mail: schubert@salk.edu; Dargusch, Richard; Raitano, Joan; Chan, S.-W.

    2006-03-31

    The responses of cells exposed to nanoparticles have been studied with regard to toxicity, but very little attention has been paid to the possibility that some types of particles can protect cells from various forms of lethal stress. It is shown here that nanoparticles composed of cerium oxide or yttrium oxide protect nerve cells from oxidative stress and that the neuroprotection is independent of particle size. The ceria and yttria nanoparticles act as direct antioxidants to limit the amount of reactive oxygen species required to kill the cells. It follows that this group of nanoparticles could be used to modulate oxidative stress in biological systems.

  20. Pressure-stabilized superconductive yttrium hydrides

    PubMed Central

    Li, Yinwei; Hao, Jian; Liu, Hanyu; Tse, John S.; Wang, Yanchao; Ma, Yanming

    2015-01-01

    The search for high-temperature superconductors has been focused on compounds containing a large fraction of hydrogen, such as SiH4(H2)2, CaH6 and KH6. Through a systematic investigation of yttrium hydrides at different hydrogen contents using an structure prediction method based on the particle swarm optimization algorithm, we have predicted two new yttrium hydrides (YH4 andYH6), which are stable above 110?GPa. Three types of hydrogen species with increased H contents were found, monatomic H in YH3, monatomic H+molecular “H2” in YH4 and hexagonal “H6” unit in YH6. Interestingly, H atoms in YH6 form sodalite-like cage sublattice with centered Y atom. Electron-phonon calculations revealed the superconductive potential of YH4 and YH6 with estimated transition temperatures (Tc) of 84–95?K and 251–264?K at 120?GPa, respectively. These values are higher than the predicted maximal Tc of 40?K in YH3. PMID:25942452

  1. ESCA studies of yttrium aluminum garnets

    SciTech Connect

    Pawlak, D.A.; Wozniak, K.; Frukacz, Z.; Barr, T.L.; Fiorentino, D.; Seal, S.

    1999-03-04

    X-ray photoelectron spectroscopy (XPS/ESCA) has been employed to investigate pure single crystals and powdered samples of yttrium aluminum garnet, Y{sub 3}Al{sub 5}O{sub 12} (YAG), and YAG crystals doped with several rare earth elements (Ln = Pr, Er, Ho, Tm) and a transition metal (Cr). Core level XPS peak shapes of the main elements forming the garnet structure can be rationalized due to different structural environments of particular ions modified by doping. The change of dopant oxidation state also results in variation of XPS peaks and helps to identify the sites in which it takes place. Single-crystal and powder samples give different XPS spectra. Possible sources of these differences are discussed. Similarities and differences between simple and mixed oxides are shown. The structure of YAG suggests the presence of only one independent oxygen ion; however the O(1s) spectra of all YAG systems exhibit two readily discerned peaks. An explanation for this dichotomy is discussed, involving the possible polarization of the oxygen valence electron density between the aluminum and yttrium. Alternative explanations are also considered.

  2. 88-Inch Cyclotron newsletter

    SciTech Connect

    Stokstad, R.

    1987-02-01

    Activities at the 88-Inch Cyclotron are discussed. Increased beam time demand and operation of the ECR source and cyclotron are reported. Experimental facility improvements are reported, including improvements to the High Energy Resolution Array and to the Recoil Atom Mass Analyzer, a new capture beamline, development of a low background counting facility. Other general improvements are reported that relate to the facility computer network and electronics pool. Approved heavy nuclei research is briefly highlighted. Also listed are the beams accelerated by the cyclotron. (LEW)

  3. Tungsten - Yttrium Based Nuclear Structural Materials

    NASA Astrophysics Data System (ADS)

    Ramana, Chintalapalle; Chessa, Jack; Martinenz, Gustavo

    2013-04-01

    The challenging problem currently facing the nuclear science community in this 21st century is design and development of novel structural materials, which will have an impact on the next-generation nuclear reactors. The materials available at present include reduced activation ferritic/martensitic steels, dispersion strengthened reduced activation ferritic steels, and vanadium- or tungsten-based alloys. These materials exhibit one or more specific problems, which are either intrinsic or caused by reactors. This work is focussed towards tungsten-yttrium (W-Y) based alloys and oxide ceramics, which can be utilized in nuclear applications. The goal is to derive a fundamental scientific understanding of W-Y-based materials. In collaboration with University of Califonia -- Davis, the project is designated to demonstrate the W-Y based alloys, ceramics and composites with enhanced physical, mechanical, thermo-chemical properties and higher radiation resistance. Efforts are focussed on understanding the microstructure, manipulating materials behavior under charged-particle and neutron irradiation, and create a knowledge database of defects, elemental diffusion/segregation, and defect trapping along grain boundaries and interfaces. Preliminary results will be discussed.

  4. Nuclear magnetic resonance wide-line study of hydrogen in the yttrium-yttrium dihydride system

    SciTech Connect

    Anderson, D.L.

    1980-03-01

    The /sup 1/H nuclear magnetic resonance was studied in the yttrium-hydrogen system YH/sub x/ in the composition range 0.20 less than or equal to x less than or equal to 1.98 and temperature range 77 K less than or equal to T less than or equal to 490/sup 0/K. Both ..cap alpha..- and ..beta..-phases of YH/sub x/ were investigated in polycrystalline (powdered) specimens. Rigid lattice proton resonance second moments were obtained for both ..cap alpha..- and ..beta..-phase samples. Analysis of the second moment for ..cap alpha..-YH/sub x/ (..cap alpha..-phase) indicates that the hydrogen resides in both the tetrahedral and octahedral interstitial sites of the hcp Y lattice. Second moment values for ..beta..-YH/sub x/ (..beta..-phase) indicate that a sizeable fraction of the octahedral interstitial sites in the fcc yttrium metal lattice are occupied by hydrogen, while a nonnegligible fraction of the tetrahedral interstitial sites are vacant. For example, in YH/sub 1.98/, 28% of the octahedral sites are occupied, while 15% of the tetrahedral sites are vacant. The results for ..beta..-YH/sub x/ also indicate that as the H concentration increases, the probability of H occupation of octahedral sites increases.

  5. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Phosphoric acid, yttrium(3+) salt (1:1... Specific Chemical Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical substance... acid, yttrium(3+) salt (1:1) (PMN P-04-153; CAS No. 13990-54-0) is subject to reporting under...

  6. Solid State Sciences 2 (2000) 109118 Synthesis and crystal structures of yttrium sulfates

    E-print Network

    Wang, Xiqu

    2000-01-01

    Solid State Sciences 2 (2000) 109­118 Synthesis and crystal structures of yttrium sulfates Y.092(1)°. The coordination environments of the yttrium atoms in the four structures vary from highly irregular 6+2, 6+3, 7´dicales Elsevier SAS. All rights reserved. Keywords: Hydrothermal synthesis; Crystal structure; Yttrium sulfate

  7. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 32 2012-07-01 2012-07-01 false Phosphoric acid, yttrium(3+) salt (1:1... Specific Chemical Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical substance... acid, yttrium(3+) salt (1:1) (PMN P-04-153; CAS No. 13990-54-0) is subject to reporting under...

  8. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 32 2012-07-01 2012-07-01 false Manganese yttrium oxide (Mn2YO5). 721... Substances § 721.10013 Manganese yttrium oxide (Mn2YO5). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (Mn2YO5) (PMN...

  9. Birefringence of yttrium vanadate single crystals in the middle wavelength infrared

    E-print Network

    Dereniak, Eustace L.

    Birefringence of yttrium vanadate single crystals in the middle wavelength infrared Haitao Luoa Abstract The birefringence of the yttrium vanadate (YVO4) crystals have been measured for the first time of this material for the MWIR polarization applications. Keywords: yttrium vanadate crystal, birefringence

  10. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Manganese yttrium oxide (MnYO3). 721... Substances § 721.10009 Manganese yttrium oxide (MnYO3). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (MnYO3) (PMN...

  11. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 32 2013-07-01 2013-07-01 false Manganese yttrium oxide (MnYO3). 721... Substances § 721.10009 Manganese yttrium oxide (MnYO3). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (MnYO3) (PMN...

  12. Ligand-Assisted Rate Acceleration in Transacylation by a Yttrium-Salen

    E-print Network

    RajanBabu, T. V. "Babu"

    Ligand-Assisted Rate Acceleration in Transacylation by a Yttrium-Salen Complex. Demonstration, 2002 ABSTRACT Yttrium-salen complexes effect transacylation between enolesters and chiral secondary. In this Letter we report the synthesis, characterization, and application of a class of yttrium complexes

  13. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Phosphoric acid, yttrium(3+) salt (1:1... Specific Chemical Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical substance... acid, yttrium(3+) salt (1:1) (PMN P-04-153; CAS No. 13990-54-0) is subject to reporting under...

  14. 40 CFR 721.10627 - Yttrium borate phosphate vanadate with europium and additional dopants (generic).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 32 2013-07-01 2013-07-01 false Yttrium borate phosphate vanadate with... SUBSTANCES Significant New Uses for Specific Chemical Substances § 721.10627 Yttrium borate phosphate... subject to reporting. (1) The chemical substance identified generically as yttrium borate...

  15. Atomistic Modeling of Native Point Defects in Yttrium Aluminum Garnet Crystals

    E-print Network

    Pandey, Ravi

    Atomistic Modeling of Native Point Defects in Yttrium Aluminum Garnet Crystals Maija M. Kuklja point defects in yttrium aluminum garnet (YAG) are studied in the framework of the pair is accommodated by the formation of antisites, rather than vacancies, in the lattice. I. Introduction YTTRIUM

  16. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 31 2011-07-01 2011-07-01 false Manganese yttrium oxide (Mn2YO5). 721... Substances § 721.10013 Manganese yttrium oxide (Mn2YO5). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (Mn2YO5) (PMN...

  17. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 31 2011-07-01 2011-07-01 false Manganese yttrium oxide (MnYO3). 721... Substances § 721.10009 Manganese yttrium oxide (MnYO3). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (MnYO3) (PMN...

  18. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 32 2012-07-01 2012-07-01 false Manganese yttrium oxide (MnYO3). 721... Substances § 721.10009 Manganese yttrium oxide (MnYO3). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (MnYO3) (PMN...

  19. High birefringence of the yttrium vanadate crystal in the middle wavelength infrared

    E-print Network

    Dereniak, Eustace L.

    High birefringence of the yttrium vanadate crystal in the middle wavelength infrared H. T. Luo, T 64919) A high birefringence of over 0.21 for the yttrium vanadate YVO4 crystal in the middle wavelength it transmits up to 5 m and posses high birefringence of over 0.2.2 Very re- cently, the yttrium vanadate YVO4

  20. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Manganese yttrium oxide (Mn2YO5). 721... Substances § 721.10013 Manganese yttrium oxide (Mn2YO5). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (Mn2YO5) (PMN...

  1. Transient Dopant Segregation and Precipitation in Yttrium-doped Alumina Mehmet A. Glgn1*

    E-print Network

    Yanikoglu, Berrin

    Transient Dopant Segregation and Precipitation in Yttrium-doped Alumina Mehmet A. Gülgün1* , Saso Stuttgart, GERMANY Correspondence: m-gulgun@sabanciuniv.edu Yttrium segregation at the grain boundaries (GBs-5]. This investigation seeks to understand the reasons behind the inconsistencies in the reported excess yttrium values

  2. Author's personal copy Deposition of yttrium oxide thin films in supercritical carbon dioxide

    E-print Network

    Gougousi, Theodosia

    Author's personal copy Deposition of yttrium oxide thin films in supercritical carbon dioxide 2007 Available online 4 March 2008 Abstract A synthetic avenue for the formation of yttrium oxide thin,5-heptanedionato) yttrium(III) with inorganic (H2O2) and organic (tert-butyl and di-tert-amyl) peroxides

  3. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 32 2013-07-01 2013-07-01 false Manganese yttrium oxide (Mn2YO5). 721... Substances § 721.10013 Manganese yttrium oxide (Mn2YO5). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (Mn2YO5) (PMN...

  4. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 31 2011-07-01 2011-07-01 false Phosphoric acid, yttrium(3+) salt (1:1... Specific Chemical Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical substance... acid, yttrium(3+) salt (1:1) (PMN P-04-153; CAS No. 13990-54-0) is subject to reporting under...

  5. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 32 2013-07-01 2013-07-01 false Phosphoric acid, yttrium(3+) salt (1:1... Specific Chemical Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical substance... acid, yttrium(3+) salt (1:1) (PMN P-04-153; CAS No. 13990-54-0) is subject to reporting under...

  6. 40 CFR 721.10627 - Yttrium borate phosphate vanadate with europium and additional dopants (generic).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Yttrium borate phosphate vanadate with... SUBSTANCES Significant New Uses for Specific Chemical Substances § 721.10627 Yttrium borate phosphate... subject to reporting. (1) The chemical substance identified generically as yttrium borate...

  7. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 2013-07-01 false Manganese yttrium oxide (Mn2YO5). 721.10013 Section...Substances § 721.10013 Manganese yttrium oxide (Mn2 YO5 ). (a) Chemical...chemical substance identified as manganese yttrium oxide (Mn2 YO5 ) (PMN...

  8. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 2014-07-01 false Manganese yttrium oxide (MnYO3). 721.10009 Section...Substances § 721.10009 Manganese yttrium oxide (MnYO3 ). (a) Chemical...chemical substance identified as manganese yttrium oxide (MnYO3 ) (PMN...

  9. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 2012-07-01 false Manganese yttrium oxide (MnYO3). 721.10009 Section...Substances § 721.10009 Manganese yttrium oxide (MnYO3 ). (a) Chemical...chemical substance identified as manganese yttrium oxide (MnYO3 ) (PMN...

  10. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Phosphoric acid, yttrium(3+) salt (1:1). 721.10177...Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical...substance identified as phosphoric acid, yttrium(3+) salt (1:1) (PMN...

  11. Effects of exchange interactions on magnetoacoustic resonance in layered nanocomposites of yttrium iron garnet

    E-print Network

    Srinivasan, Gopalan

    Effects of exchange interactions on magnetoacoustic resonance in layered nanocomposites of yttrium coefficient at MAR, about 75­100 V/cm Oe for yttrium­iron garnet (YIG)/lead zirconate­titanate (PZT) nano. Studies were performed on bilayers of yttrium iron garnet (YIG) films and (001) lead magnesium niobate

  12. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Phosphoric acid, yttrium(3+) salt (1:1). 721.10177...Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical...substance identified as phosphoric acid, yttrium(3+) salt (1:1) (PMN...

  13. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 2011-07-01 false Manganese yttrium oxide (MnYO3). 721.10009 Section...Substances § 721.10009 Manganese yttrium oxide (MnYO3). (a) Chemical substance...chemical substance identified as manganese yttrium oxide (MnYO3 ) (PMN...

  14. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 2012-07-01 false Manganese yttrium oxide (Mn2YO5). 721.10013 Section...Substances § 721.10013 Manganese yttrium oxide (Mn2 YO5 ). (a) Chemical...chemical substance identified as manganese yttrium oxide (Mn2 YO5 ) (PMN...

  15. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Phosphoric acid, yttrium(3+) salt (1:1). 721.10177...Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical...substance identified as phosphoric acid, yttrium(3+) salt (1:1) (PMN...

  16. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 2011-07-01 false Manganese yttrium oxide (Mn2YO5). 721.10013 Section...Substances § 721.10013 Manganese yttrium oxide (Mn2YO5). (a) Chemical substance...chemical substance identified as manganese yttrium oxide (Mn2 YO5 ) (PMN...

  17. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 2010-07-01 false Manganese yttrium oxide (MnYO3). 721.10009 Section...Substances § 721.10009 Manganese yttrium oxide (MnYO3). (a) Chemical substance...chemical substance identified as manganese yttrium oxide (MnYO3 ) (PMN...

  18. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Phosphoric acid, yttrium(3+) salt (1:1). 721.10177...Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical...substance identified as phosphoric acid, yttrium(3+) salt (1:1) (PMN...

  19. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 2013-07-01 false Manganese yttrium oxide (MnYO3). 721.10009 Section...Substances § 721.10009 Manganese yttrium oxide (MnYO3 ). (a) Chemical...chemical substance identified as manganese yttrium oxide (MnYO3 ) (PMN...

  20. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 2014-07-01 false Manganese yttrium oxide (Mn2YO5). 721.10013 Section...Substances § 721.10013 Manganese yttrium oxide (Mn2 YO5 ). (a) Chemical...chemical substance identified as manganese yttrium oxide (Mn2 YO5 ) (PMN...

  1. 40 CFR 721.10177 - Phosphoric acid, yttrium(3+) salt (1:1).

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Phosphoric acid, yttrium(3+) salt (1:1). 721.10177...Substances § 721.10177 Phosphoric acid, yttrium(3+) salt (1:1). (a) Chemical...substance identified as phosphoric acid, yttrium(3+) salt (1:1) (PMN...

  2. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 2010-07-01 false Manganese yttrium oxide (Mn2YO5). 721.10013 Section...Substances § 721.10013 Manganese yttrium oxide (Mn2YO5). (a) Chemical substance...chemical substance identified as manganese yttrium oxide (Mn2 YO5 ) (PMN...

  3. 40 CFR 721.10009 - Manganese yttrium oxide (MnYO3).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Manganese yttrium oxide (MnYO3). 721... Substances § 721.10009 Manganese yttrium oxide (MnYO3). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (MnYO3) (PMN...

  4. 40 CFR 721.10013 - Manganese yttrium oxide (Mn2YO5).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Manganese yttrium oxide (Mn2YO5). 721... Substances § 721.10013 Manganese yttrium oxide (Mn2YO5). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as manganese yttrium oxide (Mn2YO5) (PMN...

  5. Gadolinium and Yttrium Borates: Thermal Behavior and Structural Considerations

    NASA Astrophysics Data System (ADS)

    Cohen-Adad, M. Th.; Aloui-Lebbou, O.; Goutaudier, C.; Panczer, G.; Dujardin, C.; Pedrini, C.; Florian, P.; Massiot, D.; Gerard, F.; Kappenstein, Ch.

    2000-10-01

    The present work deals with the phase diagram of the Gd2O3-B2O3 binary system where three solid phases with respective stoichiometries Gd3BO6, GdBO3, and Gd(BO2)3 have been evidenced. MAS NMR experiments were performed using similar yttrium compounds. Only BIV sites exist in orthoborate at room temperature and the transition phase observed at about 900°C has to be attributed to the change of the boron environment with progressive formation of BIII and fast exchange between BIII and BIV when temperature increases. MAS NMR results confirm the existence of two yttrium sites. In Y3BO6, two threefold and one fourfold boron atoms are observed. One BIII corresponds to a planar orthoborate group; the other would be distorted. Fifteen yttrium sites have been observed which are not interpreted yet.

  6. Yttrium and rare earth stabilized fast reactor metal fuel

    DOEpatents

    Guon, Jerold (Woodland Hills, CA); Grantham, LeRoy F. (Calabasas, CA); Specht, Eugene R. (Simi Valley, CA)

    1992-01-01

    To increase the operating temperature of a reactor, the melting point and mechanical properties of the fuel must be increased. For an actinide-rich fuel, yttrium, lanthanum and/or rare earth elements can be added, as stabilizers, to uranium and plutonium and/or a mixture of other actinides to raise the melting point of the fuel and improve its mechanical properties. Since only about 1% of the actinide fuel may be yttrium, lanthanum, or a rare earth element, the neutron penalty is low, the reactor core size can be reduced, the fuel can be burned efficiently, reprocessing requirements are reduced, and the nuclear waste disposal volumes reduced. A further advantage occurs when yttrium, lanthanum, and/or other rare earth elements are exposed to radiation in a reactor, they produce only short half life radioisotopes, which reduce nuclear waste disposal problems through much shorter assured-isolation requirements.

  7. Effect of yttrium on nucleation and growth of zirconium hydrides

    NASA Astrophysics Data System (ADS)

    Li, Changji; Xiong, Liangyin; Wu, Erdong; Liu, Shi

    2015-02-01

    Addition of yttrium in zirconium causes precipitates of yttrium, which form two types of particles and are oxidized upon heat treatment. One type of particles with sub-micrometer scale sizes has a low population, whereas the other with nano scale sizes has a high population and cluster distribution. Owing to strong affinity of yttrium to hydrogen, the nanoparticles, mostly within the grains of the Zr-Y alloy, attract nucleation of hydrides at the clusters of the nanoparticles and cause preferential distribution of intragranular hydrides. In comparison with that of Zr, additional nanoparticles in the Zr-Y alloy impede further growth of hydride precipitates during hydriding. It is deduced that the impediment of growing hydride precipitates by the nanoparticles is developed during an auto-catalytic nucleation process, which leads to formation of thin and intragranular hydrides, favorable to mitigation of hydride embrittlement.

  8. Development of photocatalyst by combined nitrogen and yttrium doping

    SciTech Connect

    Khan, Matiullah; Cao, Wenbin

    2014-01-01

    Graphical abstract: The simulated compensated YN{sub SUB} co-doped TiO{sub 2} model can reasonably explain the experimental observations. Calculation results show that substitutional Y at Ti sites and substitutional N at O sites with an oxygen vacancy give stable configuration, reduced band gap, better visible light absorption and enhance separations of photoexcited charge carriers. The experimental observations confirmed the theoretical findings. - Highlights: • (Y, N) codoped TiO{sub 2} was synthesized by mild one pot hydrothermal method. • The Y doping concentration was varied from 0.01 to 1.38 at%. • 0.05% (Y, N) codoped TiO{sub 2} shows enhanced visible light photocatalytic activity. • Compensated and noncompensated ab-initio calculations were performed. • Calculation results reasonably explained the experimental findings. - Abstract: Titanium dioxide co-doped with yttrium and nitrogen with different yttrium doping concentration has been synthesized by mild one pot hydrothermal method without any post calcination for crystallization. Irrespective of the yttrium doping concentration, all the synthesized samples were composed of pure anatase phase with good crystallinity. And the synthesized co-doped samples have spherical morphology with uniform particle size distribution. The absorption edge of the co-doped TiO{sub 2} was shifted toward visible light region depicting that the intrinsic band gap of TiO{sub 2} was affected by the co-doping. Among the different samples, the co-doped sample with 0.05% yttrium doping concentration exhibits enhanced visible light photocatalytic activity by degradation of methylene blue in aqueous solution. Compensated and non-compensated yttrium–nitrogen co-doped TiO{sub 2} models were simulated using density functional theory to explain the experimental findings. The calculation results show that the compensated yttrium–nitrogen co-doped TiO{sub 2} model may reasonably explain the experimental observations due to its stable configuration, narrowed band gap and enhanced separation of photoexcited carriers.

  9. Measurement of diffusion coefficients of francium and rubidium in yttrium based on laser spectroscopy

    E-print Network

    de Mauro, C; Corradi, L; Dainelli, A; Khanbekyan, A; Mariotti, E; Minguzzi, P; Moi, L; Sanguinetti, S; Stancari, G; Tomassetti, L; Veronesi, S

    2008-01-01

    We report the first measurement of the diffusion coefficients of francium and rubidium ions implanted in a yttrium foil. We developed a methodology, based on laser spectroscopy, which can be applied to radioactive and stable species, and allows us to directly take record of the diffusion time. Francium isotopes are produced via fusion-evaporation nuclear reaction of a 100 MeV 18-O beam on a Au target at the Tandem XTU accelerator facility in Legnaro, Italy. Francium is ionized at the gold-vacuum interface and Fr+ ions are then transported with a 3 keV electrostatic beamline to a cell for neutralization and capture in a magneto-optical trap (MOT). A Rb+ beam is also available, which follows the same path as Fr+ ions. The accelerated ions are focused and implanted in a 25 um thick yttrium foil for neutralization: after diffusion to the surface, they are released as neutrals, since the Y work function is lower than the alkali ionization energies. The time evolution of the MOT and the vapor fluorescence signals a...

  10. Availability of yttrium-90 from strontium-90: a nuclear medicine perspective.

    PubMed

    Chakravarty, Rubel; Dash, Ashutosh; Pillai, M R A

    2012-12-01

    Yttrium-90 (T(½) 64.1 hours, E(?max)=2.28 MeV) is a pure ?? particle emitting radionuclide with well-established applications in targeted therapy. There are several advantages of ??Y as a therapeutic radionuclide. It has a suitable physical half-life (?64 hours) and decays to a stable daughter product ??Zr by emission of high-energy ?? particles. Yttrium has a relatively simple chemistry and its suitability for forming complexes with a variety of chelating agents is well established. The ??Sr/??Y generator is an ideal source for the long-term continuous availability of no-carrier-added ??Y suitable for the preparation of radiopharmaceuticals for radionuclide therapy. The parent radionuclide ??Sr, which is a long-lived fission product, is available in large quantities from spent fuel. Several useful technologies have been developed for the preparation of ??Sr/??Y generators. There are several well-established radiopharmaceuticals based on monoclonal antibodies, peptides, and particulates labeled with ??Y, that are in regular use for the treatment of some forms of primary cancers and arthritis. At present, there are no generators for the elution of ??Y that can be set up in a hospital radiopharmacy. The radionuclide is procured from manufacturers and the radiopharmaceuticals are formulated on site. This article reviews the development of ??Sr/??Y generator and the development of ??Y radiopharmaceuticals. PMID:23009585

  11. Structural and dielectric properties of yttrium substituted nickel ferrites

    SciTech Connect

    Ognjanovic, Stevan M.; Tokic, Ivan; Cvejic, Zeljka; Rakic, Srdjan; Srdic, Vladimir V.

    2014-01-01

    Graphical abstract: - Highlights: • Dense NiFe{sub 2?x}Y{sub x}O{sub 4} ceramics (with 0 ? x ? 0.3) were prepared. • Pure spinels were obtained for x ? 0.07 while for x ? 0.15 samples had secondary phases. • With addition of yttrium, ac conductivity slightly increased. • We suggest several effects that can explain the observed changes in ac conduction. • With addition of yttrium, dielectric constant increased while the tg ? decreased. - Abstract: The influence of Y{sup 3+} ions on structural and dielectric properties of nickel ferrites (NiFe{sub 2?x}Y{sub x}O{sub 4}, where 0 ? x ? 0.3) has been studied. The as-synthesized samples, prepared by the co-precipitation method, were analyzed by XRD and FTIR which suggested that Y{sup 3+} ions were incorporated into the crystal lattice for all the samples. However, the XRD analysis of the sintered samples showed that secondary phases appear in the samples with x > 0.07. The samples have densities greater than 90% TD and the SEM images showed that the grain size decreases with the addition of yttrium. Dielectric properties measured from 150 to 25 °C in the frequency range of 100 Hz–1 MHz showed that the addition of yttrium slightly increases the ac conductivity and decreases the tg ? therefore making the materials better suited for the use in microwave devices.

  12. Discovery of Yttrium, Zirconium, Niobium, Technetium, and Ruthenium Isotopes

    E-print Network

    Nystrom, A

    2011-01-01

    Currently, thirty-four yttrium, thirty-five zirconium, thirty-four niobium, thirty-five technetium, and thirty-eight ruthenium isotopes have been observed and the discovery of these isotopes is discussed here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.

  13. Discovery of Yttrium, Zirconium, Niobium, Technetium, and Ruthenium Isotopes

    E-print Network

    A. Nystrom; M. Thoennessen

    2011-02-11

    Currently, thirty-four yttrium, thirty-five zirconium, thirty-four niobium, thirty-five technetium, and thirty-eight ruthenium isotopes have been observed and the discovery of these isotopes is discussed here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.

  14. Yttrium and rare earth stabilized fast reactor metal fuel

    SciTech Connect

    Guon, J.; Grantham, L.F.; Specht, E.R.

    1992-05-12

    This patent describes an improved metal alloy reactor fuel consisting essentially of uranium, plutonium, and at least one element from the group consisting of yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium.

  15. Evidence of yttrium silicate inclusions in YSZ-porcelain veneers.

    PubMed

    Stoner, Brian R; Griggs, Jason A; Neidigh, John; Piascik, Jeffrey R

    2014-04-01

    This report introduces the discovery of crystalline defects that can form in the porcelain veneering layer when in contact with yttria-stabilized zirconia (YSZ). The focus was on dental prostheses and understanding the defects that form in the YSZ/porcelain system; however the data reported herein may have broader implications toward the use and stability of YSZ-based ceramics in general. Specimens were cut from fully sintered YSZ plates and veneering porcelain was applied (<1 mm thick) to one surface and fired under manufacturer's recommended protocol. Scanning electron microscopy (SEM) with integrated electron dispersive X-ray (EDAX) was used for microstructural and elemental analysis. EDAX, for chemical analysis and transmission electron diffraction (TED) for structural analysis were both performed in the transmission electron microscope (TEM). Additionally, in order to spatially resolve Y-rich precipitates, micro-CT scans were conducted at varying depths within the porcelain veneer. Local EDAX (SEM) was performed in the regions of visible inclusions and showed significant increases in yttrium concentration. TEM specimens also showed apparent inclusions in the porcelain and selected area electron diffraction was performed on these regions and found the inclusions to be crystalline and identified as either yttrium-silicate (Y2 SiO5 ) or yttrium-disilicate (Y2 Si2 O7 ). Micro-CT data showed that yttrium-silicate precipitates were distributed throughout the thickness of the porcelain veneer. Future studies are needed to determine whether many of the premature failures associated with this materials system may be the result of crystalline flaws that form as a result of high temperature yttrium diffusion near the surfaces of YSZ. PMID:24106151

  16. Investigation of the high spin structure of Zr88

    NASA Astrophysics Data System (ADS)

    Saha, S.; Palit, R.; Sethi, J.; Biswas, S.; Singh, P.; Trivedi, T.; Choudhury, D.; Srivastava, P. C.

    2014-04-01

    High spin states of Zr88 were populated with Se80(C13, 5n) fusion evaporation reaction. A thin target as well as Au backed target were used in two different experiments for the present study. Excited levels of Zr88 have been observed up to spin ˜20? and an excitation energy of ˜10 MeV. Spin and parity of most of the states have been determined from directional correlation and polarization measurements. The level scheme was substantially extended with the addition of a number of high spin states and transitions. The comparison of the measured levels of Zr88 with large shell model calculations based on the full unrestricted f5/2pg9/2 model space established the dominance of shell-model excitation up to the highest observed spin.

  17. Post-radioembolization yttrium-90 PET/CT - part 1: diagnostic reporting

    PubMed Central

    2013-01-01

    Background Yttrium-90 (90Y) positron emission tomography with integrated computed tomography (PET/CT) represents a technological leap from 90Y bremsstrahlung single-photon emission computed tomography with integrated computed tomography (SPECT/CT) by coincidence imaging of low abundance internal pair production. Encouraged by favorable early experiences, we implemented post-radioembolization 90Y PET/CT as an adjunct to 90Y bremsstrahlung SPECT/CT in diagnostic reporting. Methods This is a retrospective review of all paired 90Y PET/CT and 90Y bremsstrahlung SPECT/CT scans over a 1-year period. We compared image resolution, ability to confirm technical success, detection of non-target activity, and providing conclusive information about 90Y activity within targeted tumor vascular thrombosis. 90Y resin microspheres were used. 90Y PET/CT was performed on a conventional time-of-flight lutetium-yttrium-oxyorthosilicate scanner with minor modifications to acquisition and reconstruction parameters. Specific findings on 90Y PET/CT were corroborated by 90Y bremsstrahlung SPECT/CT, 99mTc macroaggregated albumin SPECT/CT, follow-up diagnostic imaging or review of clinical records. Results Diagnostic reporting recommendations were developed from our collective experience across 44 paired scans. Emphasis on the continuity of care improved overall diagnostic accuracy and reporting confidence of the operator. With proper technique, the presence of background noise did not pose a problem for diagnostic reporting. A counter-intuitive but effective technique of detecting non-target activity is proposed, based on the pattern of activity and its relation to underlying anatomy, instead of its visual intensity. In a sub-analysis of 23 patients with a median follow-up of 5.4 months, 90Y PET/CT consistently outperformed 90Y bremsstrahlung SPECT/CT in all aspects of qualitative analysis, including assessment for non-target activity and tumor vascular thrombosis. Parts of viscera closely adjacent to the liver remain challenging for non-target activity detection, compounded by a tendency for mis-registration. Conclusions Adherence to proper diagnostic reporting technique and emphasis on continuity of care are vital to the clinical utility of post-radioembolization 90Y PET/CT. 90Y PET/CT is superior to 90Y bremsstrahlung SPECT/CT for the assessment of target and non-target activity. PMID:23883566

  18. RAPID COMMUNICATIONS PHYSICAL REVIEW A 88, 060701(R) (2013)

    E-print Network

    Gay, Timothy J.

    2013-01-01

    RAPID COMMUNICATIONS PHYSICAL REVIEW A 88, 060701(R) (2013) Optically pumped spin December 2013) We describe the operation of a prototype polarized-electron source. Rubidium vapor all naturally occurring DNA has the same handedness [7]. In tabletop experiments with vapor targets

  19. UCRL--15956 DE88 008921

    E-print Network

    Ghoniem, Nasr M.

    3 - UCRL--15956 DE88 008921 UPDATED REFERENCE DESIGN OF A LIQUID METAL COOLED 1 TANDEM MIRROR DESIGN OF A LIQUID METAL COOLED TANDEM MIRROR FUSION BREEDER D. H. Berwald, R. H. Whitley, J, K. Garner Ridge, TN 37830 September, 1985 #12;ftRSTRACT Detailed studies of key technical Issues for liquid metal

  20. Permittivity increase of yttrium-doped HfO2 through structural phase transformation

    NASA Astrophysics Data System (ADS)

    Kita, Koji; Kyuno, Kentaro; Toriumi, Akira

    2005-03-01

    An approach to control the dielectric properties of hafnium-based oxide films with an intentional structural phase transformation was proposed and demonstrated. Yttrium serves effectively as a dopant to induce a phase transformation from the monoclinic to the cubic phase even at 600°C. The yttrium-doped HfO2 films show higher permittivity than undoped HfO2, and the permittivity as high as 27 is obtained by 4at.% yttrium doping. The permittivity enhancement by yttrium doping can be explained by the shrinkage of molar volume due to the structural phase transformation. The advantage of yttrium doping is more pronounced at higher temperatures, since the permittivity of undoped HfO2 is reduced significantly, whereas that of 17at.% yttrium-doped film shows no change even at 1000°C.

  1. Phonon anharmonicity of monoclinic zirconia and yttrium-stabilized zirconia

    NASA Astrophysics Data System (ADS)

    Li, C. W.; Smith, H. L.; Lan, T.; Niedziela, J. L.; Muñoz, J. A.; Keith, J. B.; Mauger, L.; Abernathy, D. L.; Fultz, B.

    2015-04-01

    Inelastic neutron scattering measurements on monoclinic zirconia (ZrO2 ) and 8 mol% yttrium-stabilized zirconia were performed at temperatures from 300 to 1373 w K . Temperature-dependent phonon densities of states (DOS) are reported, as are Raman spectra obtained at elevated temperatures. First-principles lattice dynamics calculations with density functional theory gave total and partial phonon DOS curves and mode Grüneisen parameters. These mode Grüneisen parameters were used to predict the experimental temperature dependence of the phonon DOS with partial success. However, substantial anharmonicity was found at elevated temperatures, especially for phonon modes dominated by the motions of oxygen atoms. Yttrium-stabilized zirconia (YSZ) was somewhat more anharmonic and had a broader phonon spectrum at low temperatures, owing in part to defects in its structure. YSZ also has a larger vibrational entropy than monoclinic zirconia.

  2. Synthesis of aluminum-based scandium-yttrium master alloys

    NASA Astrophysics Data System (ADS)

    Bazhin, V. Yu.; Kosov, Ya. I.; Lobacheva, O. L.; Dzhevaga, N. V.

    2015-07-01

    The preparation technology for an Al-2% Sc-0.5% Y master alloy using aluminum-manganese alloys has been developed and tested. The microstructure of the prepared master alloy is studied and the compositions of intermetallics is determined. The efficient technological parameters of the synthesis are determined. It is shown that varying the compositions of starting reagents and alloying additions and optimizing the process conditions (temperature, mixing, etc.) allow us to forecast the manufacturing and operating characteristics of aluminum-based master alloys. Joint additions of scandium and yttrium oxides to a charge favor a substantial decrease in the grain size of the formed intermetallics; this effect appears to the utmost in the case of microallying with yttrium up to 0.5 wt %.

  3. Novel Synthesis of Yttrium Phosphate Microspheres for Radioembolization of Cancer

    NASA Astrophysics Data System (ADS)

    Kawashita, M.; Matsui, N.; Li, Z.; Miyazaki, T.

    2011-10-01

    Chemically durable microspheres containing yttrium and/or phosphorus are useful for intra-arterial radiotherapy. In the present study, we attempted to prepare yttrium phosphate (YPO4) microspheres with high chemical durability as well as smooth surface and investigated their chemical durability in simulated body environment. YPO4 microspheres with smooth surface around 25 ?m were successfully obtained, when gelatin droplets containing YPO4 precursor was cooled to be solidified in water-in-oil emulsion and then heat-treated at 1100°C. The chemical durability of the heat-treated microspheres in simulated body fluid at pH =6 and 7 was high enough for clinical application of radioembolic therapy of cancer.

  4. Microwave properties of Yttrium Vanadate at cryogenic temperatures

    E-print Network

    Jacob, Mohan V; Krupka, Jerzy; Ledenyov, Dimitri O; Takeuchi, Seiichi

    2012-01-01

    Yttrium Vanadate (YVO4) is a birefringent crystal material used in optical isolators and circulators with potentials for application in cryogenic microwave devices. As microwave properties of the YVO4 are not known, we measured the complex permittivity at the frequency of 25 GHz, using the Hakki-Coleman dielectric resonator technique in the temperature range from 13 K to 80 K. The real part of relative permittivity of YVO4 turned out to be similar to that of Sapphire - one of popular dielectric materials, used at microwave frequencies. The measured loss tangent tang {\\delta} of the YVO4 was of the order of 10^(-6) at cryogenic temperatures. As Yttrium Vanadate (YVO4) is easy to synthesis and machine, it may replace the expensive Sapphire in some microwave applications.

  5. Locoregional therapy for hepatocellular carcinoma: radioembolization with yttrium-90 microspheres.

    PubMed

    Herzer, K; Müller, S; Antoch, G; Hilgard, P

    2011-09-01

    Compared with other malignant tumours, hepatocellular carcinoma (HCC) exhibits particular characteristics regarding its supplying vessels and tumour biology. If a potentially curative surgical approach, such as resection or liver transplantation, is due to technical or prognostical reasons no option, these characteristics are a fundamental prerequisite for the possibility to effectively treat this tumour by local ablation methods. Microsphere and particle technology with selective transport of tumoricidal substances or radiation represents a new generation of therapeutics in interventional oncology. With the intrahepatic application of radioactive microspheres via the hepatic artery (radioembolization) local ablation can be performed even of diffuse and multifocal liver tumours, which hitherto, could only be approached with systemic therapy. The present standard for radioembolization, is the use of yttrium-90 glass or resin microspheres. The indications, technique and current results of radioembolization with yttrium-90 microspheres for the treatment of HCC are discussed in this review. PMID:21769078

  6. Yttrium Complexes of Arsine, Arsenide, and Arsinidene Ligands**

    PubMed Central

    Pugh, Thomas; Kerridge, Andrew; Layfield, Richard A

    2015-01-01

    Deprotonation of the yttrium–arsine complex [Cp?3Y{As(H)2Mes}] (1) (Cp?=?5-C5H4Me, Mes=mesityl) by nBuLi produces the ?-arsenide complex [{Cp?2Y[?-As(H)Mes]}3] (2). Deprotonation of the As–H bonds in 2 by nBuLi produces [Li(thf)4]2[{Cp?2Y(?3-AsMes)}3Li], [Li(thf)4]2[3], in which the dianion 3 contains the first example of an arsinidene ligand in rare-earth metal chemistry. The molecular structures of the arsine, arsenide, and arsinidene complexes are described, and the yttrium–arsenic bonding is analyzed by density functional theory. PMID:25655652

  7. Yttrium and yttrium-silicon bearing nickel-base superalloys especially useful as compatible coatings for advanced superalloys

    SciTech Connect

    Darolia, R.; Goldman, E.H.

    1991-08-27

    This patent describes a coating composition for application to nickel-base supperalloy substrate. It comprises by weight, 1 to 10% cobalt, 6 to 12% chromium, 5 to 8% aluminum, 1 to 10% tantalum, 1 to 10% tungsten, 0 to 3% rhenium, 0 to 2% molybdenum, 0.1 to 2% hafnium, 0.005 to 0.1% boron, 0.005 to 0.25% carbon, 0.01 to 1.0% yttrium, the balance nickel and incidental impurities.

  8. The influence of yttrium (Y) on the corrosion of MgY binary alloys Ming Liu a,b

    E-print Network

    Giger, Christine

    The influence of yttrium (Y) on the corrosion of Mg­Y binary alloys Ming Liu a,b , Patrik Schmutz b-containing Mg alloys Yttrium (Y) is a particularly interesting alloying element for Mg alloys because Y has

  9. Electrically and magnetically tunable phase shifters based on a barium strontium titanate-yttrium iron garnet layered structure

    E-print Network

    Electrically and magnetically tunable phase shifters based on a barium strontium titanate-yttrium by the growth of a yttrium iron garnet YIG layer on a gadolinium gallium garnet substrate by liquid phase

  10. 40 CFR 88.302-94 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 21 2013-07-01 2013-07-01 false Definitions. 88.302-94 Section 88.302-94 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CLEAN-FUEL VEHICLES Clean-Fuel Fleet Program § 88.302-94 Definitions. The definitions in § 88.302-93 and 40 CFR part 86 also apply to this part....

  11. 40 CFR 88.302-94 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 20 2014-07-01 2013-07-01 true Definitions. 88.302-94 Section 88.302-94 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CLEAN-FUEL VEHICLES Clean-Fuel Fleet Program § 88.302-94 Definitions. The definitions in § 88.302-93 and 40 CFR part 86 also apply to this part....

  12. STS-88 Day 06 Highlights

    NASA Technical Reports Server (NTRS)

    1998-01-01

    On this sixth day of the STS-88 mission, the flight crew, Commander Robert D. Cabana, Pilot Frederick W. Sturckow, and Mission Specialists Nancy J. Currie, James H. Newman, Jerry L. Ross, and Sergei Krikalev are awakened by Dwight Yokum's "Streets of Bakersfield," requested by the wife of Pilot Rick Sturckow, a California native. Cabana and Sturckow fire Endeavour's primary reaction control jets to raise the altitude of the International Space Station by about 5-1/2 statute miles. Later on Cabana, Sturckow and Currie are interviewed by the ABC News/Discovery Channel and MSNBC.

  13. Atomic Layer Deposition of Y2O3 Thin Films from Yttrium Tris(N,N-diisopropylacetamidinate) and Water

    E-print Network

    Atomic Layer Deposition of Y2O3 Thin Films from Yttrium Tris yttrium tris- (N,N-diisopropylacetamidinate), Y(i Pr2amd)3, and water. The precursor was thermally stable for advanced electronic applications in nanoscale devices. Introduction Yttrium oxide (Y2O3) is a very

  14. Cathodoluminescence Study of GadoliniumDoped Yttrium Oxide Thin Films Deposited By RadioFrequency Magnetron Sputtering

    E-print Network

    Zhigilei, Leonid V.

    Cathodoluminescence Study of Gadolinium­Doped Yttrium Oxide Thin Films Deposited By Radio A multi­layer gadolinium­doped yttrium oxide thin film was deposited in a combinatorial fashion on a Si-particle detection units. Previous work on rare­earth doped yttrium oxide materials have shown emission from the blue

  15. Effects of surface pretreatments on interface structure during formation of ultra-thin yttrium silicate dielectric films on silicon

    E-print Network

    Garfunkel, Eric

    1 Effects of surface pretreatments on interface structure during formation of ultra-thin yttrium of ultra-thin films of mixed yttrium, silicon, and oxygen, formed by oxidation of metal on clean and pre-treated silicon. XPS and MEIS analyses indicate that oxidation of yttrium on bare silicon results in a fully

  16. Exceptionally Active Yttrium-Salen Complexes for the Catalyzed Ring Opening of Epoxides by TMSCN and TMSN3

    E-print Network

    RajanBabu, T. V. "Babu"

    Exceptionally Active Yttrium-Salen Complexes for the Catalyzed Ring Opening of Epoxides by TMSCN or alkoxide free yttrium-salen complexes are excellent catalysts for the ring opening of epoxides mediated on the solid-state structure of the catalyst complex, we proposed a novel mechanism in which the yttrium center

  17. Spin-resolved photoemission of in situ sputtered iron and iron-yttrium alloys Y. B. Xu and D. Greig

    E-print Network

    Xu, Yongbing

    Spin-resolved photoemission of in situ sputtered iron and iron-yttrium alloys Y. B. Xu and D. Greig be due to a negative moment on the yttrium. S0163-1829 97 03017-8 I. INTRODUCTION Amorphous alloys based on iron and yttrium are particu- larly interesting from a fundamental point of view as a range of Fe

  18. PHYSICAL REVIEW B 83, 184108 (2011) High-pressure structural study of yttrium monochalcogenides from experiment and theory

    E-print Network

    Svane, Axel Torstein

    2011-01-01

    PHYSICAL REVIEW B 83, 184108 (2011) High-pressure structural study of yttrium monochalcogenides experiments using synchrotron radiation are performed on the yttrium monochalcogenides YS, YSe, and YTe up, the yttrium monochalcogenides are predicted to undergo a structural transition. Assuming that the high

  19. Atomic-scale imaging and the effect of yttrium on the fracture toughness of silicon carbide ceramics

    E-print Network

    Ritchie, Robert

    Atomic-scale imaging and the effect of yttrium on the fracture toughness of silicon carbide; Silicon carbide; Yttrium dopants; Fracture toughness 1. Introduction Rare-earth (RE) additives-boundary phase due to the presence of the RE ions [4]. However, with additions of yttrium, which

  20. 32 CFR 88.6 - Information requirements.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Information requirements. 88.6 Section 88.6 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE PERSONNEL, MILITARY AND CIVILIAN TRANSITION ASSISTANCE FOR MILITARY PERSONNEL § 88.6 Information requirements. The quarterly...

  1. 32 CFR 88.6 - Information requirements.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 1 2011-07-01 2011-07-01 false Information requirements. 88.6 Section 88.6 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE PERSONNEL, MILITARY AND CIVILIAN TRANSITION ASSISTANCE FOR MILITARY PERSONNEL § 88.6 Information requirements. The quarterly...

  2. 47 CFR 73.88 - Blanketing interference.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 4 2012-10-01 2012-10-01 false Blanketing interference. 73.88 Section 73.88 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES AM Broadcast Stations § 73.88 Blanketing interference. The licensee of each broadcast station is required to satisfy all...

  3. 38 CFR 4.88 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2014-07-01 2014-07-01 false 4.88 Section 4.88 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and Nutritional Deficiencies § 4.88...

  4. 38 CFR 4.88 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2013-07-01 2013-07-01 false 4.88 Section 4.88 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and Nutritional Deficiencies § 4.88...

  5. 38 CFR 4.88 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false 4.88 Section 4.88 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and Nutritional Deficiencies § 4.88...

  6. 38 CFR 4.88 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2012-07-01 2012-07-01 false 4.88 Section 4.88 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and Nutritional Deficiencies § 4.88...

  7. 38 CFR 4.88 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2011-07-01 2011-07-01 false 4.88 Section 4.88 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and Nutritional Deficiencies § 4.88...

  8. 7 CFR 3570.88 - Management assistance.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 15 2012-01-01 2012-01-01 false Management assistance. 3570.88 Section 3570.88 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, DEPARTMENT OF AGRICULTURE COMMUNITY PROGRAMS Community Facilities Grant Program § 3570.88 Management assistance....

  9. 7 CFR 3570.88 - Management assistance.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 15 2014-01-01 2014-01-01 false Management assistance. 3570.88 Section 3570.88 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, DEPARTMENT OF AGRICULTURE COMMUNITY PROGRAMS Community Facilities Grant Program § 3570.88 Management assistance....

  10. 7 CFR 3570.88 - Management assistance.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 15 2011-01-01 2011-01-01 false Management assistance. 3570.88 Section 3570.88 Agriculture Regulations of the Department of Agriculture (Continued) RURAL HOUSING SERVICE, DEPARTMENT OF AGRICULTURE COMMUNITY PROGRAMS Community Facilities Grant Program § 3570.88 Management assistance....

  11. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Definitions. 98.88 Section 98.88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the...

  12. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 22 2012-07-01 2012-07-01 false Definitions. 98.88 Section 98.88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the...

  13. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 22 2013-07-01 2013-07-01 false Definitions. 98.88 Section 98.88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the...

  14. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 21 2011-07-01 2011-07-01 false Definitions. 98.88 Section 98.88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the...

  15. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 21 2014-07-01 2014-07-01 false Definitions. 98.88 Section 98.88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the...

  16. 34 CFR 668.88 - Hearing.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false Hearing. 668.88 Section 668.88 Education Regulations of... Proceedings § 668.88 Hearing. (a) A hearing is an orderly presentation of arguments and evidence conducted by a hearing official. (b) If the hearing official, the designated department official who brought...

  17. 34 CFR 668.88 - Hearing.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 34 Education 3 2011-07-01 2011-07-01 false Hearing. 668.88 Section 668.88 Education Regulations of... Proceedings § 668.88 Hearing. (a) A hearing is an orderly presentation of arguments and evidence conducted by a hearing official. (b) If the hearing official, the designated department official who brought...

  18. 9 CFR 381.88 - Parasites.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 9 Animals and Animal Products 2 2013-01-01 2013-01-01 false Parasites. 381.88 Section 381.88 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY... § 381.88 Parasites. Organs or other parts of carcasses which are found to be infested with parasites,...

  19. 9 CFR 381.88 - Parasites.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 2 2011-01-01 2011-01-01 false Parasites. 381.88 Section 381.88 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY... § 381.88 Parasites. Organs or other parts of carcasses which are found to be infested with parasites,...

  20. 9 CFR 381.88 - Parasites.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 9 Animals and Animal Products 2 2012-01-01 2012-01-01 false Parasites. 381.88 Section 381.88 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY... § 381.88 Parasites. Organs or other parts of carcasses which are found to be infested with parasites,...

  1. 9 CFR 381.88 - Parasites.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Parasites. 381.88 Section 381.88 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY... § 381.88 Parasites. Organs or other parts of carcasses which are found to be infested with parasites,...

  2. 9 CFR 381.88 - Parasites.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 2 2014-01-01 2014-01-01 false Parasites. 381.88 Section 381.88 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY... § 381.88 Parasites. Organs or other parts of carcasses which are found to be infested with parasites,...

  3. 7 CFR 1780.88 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 12 2014-01-01 2013-01-01 true 1780.88 Section 1780.88 Agriculture Regulations of the Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE (CONTINUED) WATER... Documents for Public Body Applicants § 1780.88...

  4. Influence of powerful laser irradiation on electromagneto-optical dependences of yttrium iron garnets

    SciTech Connect

    Koronovskyy, V. E.

    2009-09-15

    Electromagneto-optical properties of yttrium iron garnets have been investigated in a longitudinal geometry by using optical polarimetry method. It is revealed that irradiation of yttrium iron garnet films by powerful laser impulse leads to essential increase in the electromagneto-optical effect value, which can be due to the elimination of the local mechanical strain or nonuniform pressure in them.

  5. A Cilia Independent Role of Ift88/Polaris during Cell Migration

    PubMed Central

    Hamann, Christoph; Powelske, Christian; Mergen, Miriam; Herbst, Henriette; Kotsis, Fruzsina; Nitschke, Roland; Kuehn, E. Wolfgang

    2015-01-01

    Ift88 is a central component of the intraflagellar transport (Ift) complex B, essential for the building of cilia and flagella from single cell organisms to mammals. Loss of Ift88 results in the absence of cilia and causes left-right asymmetry defects, disordered Hedgehog signaling, and polycystic kidney disease, all of which are explained by aberrant ciliary function. In addition, a number of extraciliary functions of Ift88 have been described that affect the cell-cycle, mitosis, and targeting of the T-cell receptor to the immunological synapse. Similarly, another essential ciliary molecule, the kinesin-2 subunit Kif3a, which transports Ift-B in the cilium, affects microtubule (MT) dynamics at the leading edge of migrating cells independently of cilia. We now show that loss of Ift88 impairs cell migration irrespective of cilia. Ift88 is required for the polarization of migrating MDCK cells, and Ift88 depleted cells have fewer MTs at the leading edge. Neither MT dynamics nor MT nucleation are dependent on Ift88. Our findings dissociate the function of Ift88 from Kif3a outside the cilium and suggest a novel extraciliary function for Ift88. Future studies need to address what unifying mechanism underlies the different extraciliary functions of Ift88. PMID:26465598

  6. RBS and GAXRD contributions to yttrium implanted extra low carbon steel characterization

    SciTech Connect

    Caudron, E.; Buscail, H.; Jacob, Y.P.; Stroosnijder, M.F.

    1999-02-01

    Extra low carbon steel samples were yttrium implanted using an ion implantation method. Composition and structural studies were carried out before and after yttrium implantations by several analytical and structural techniques (Rutherford backscattering spectrometry, reflection high energy electron diffraction, scanning electron microscopy, X-ray diffraction, and glancing angle X-ray diffraction) to characterize the yttrium implantation effect on extra low carbon steel. The aim of this article is to show the contributions of Rutherford back-scattering spectrometry (RBS) and glancing angle X-ray diffraction (GAXRD) to the determination of yttrium depth profiles in the samples. The results obtained by these techniques are compared to those of the other analyses performed in this work to show the existing correlation between composition and structural studies. Their results allow a better understanding of the effect of yttrium implantation in extra low carbon steel before studying their corrosion resistance at high temperature.

  7. Treatment of exhaust fluorescent lamps to recover yttrium: experimental and process analyses.

    PubMed

    De Michelis, Ida; Ferella, Francesco; Varelli, Ennio Fioravante; Vegliò, Francesco

    2011-12-01

    The paper deals with recovery of yttrium from fluorescent powder coming from dismantling of spent fluorescent tubes. Metals are leached by using different acids (nitric, hydrochloric and sulphuric) and ammonia in different leaching tests. These tests show that ammonia is not suitable to recover yttrium, whereas HNO(3) produces toxic vapours. A full factorial design is carried out with HCl and H(2)SO(4) to evaluate the influence of operating factors. HCl and H(2)SO(4) leaching systems give similar results in terms of yttrium extraction yield, but the last one allows to reduce calcium extraction with subsequent advantage during recovery of yttrium compounds in the downstream. The greatest extraction of yttrium is obtained by 20% w/v S/L ratio, 4N H(2)SO(4) concentration and 90°C. Yttrium and calcium yields are nearly 85% and 5%, respectively. The analysis of variance shows that acid concentration alone and interaction between acid and pulp density have a significant positive effect on yttrium solubilization for both HCl and H(2)SO(4) medium. Two models are empirically developed to estimate yttrium and calcium concentration during leaching. Precipitation tests demonstrate that at least the stoichiometric amount of oxalic acid is necessary to recover yttrium efficiently and a pure yttrium oxalate n-hydrate can be produced (99% grade). The process is economically feasible if other components of the fluorescent lamps (glass, ferrous and non-ferrous scraps) are recovered after the equipment dismantling and valorized, besides the cost that is usually paid to recycling companies for collection, treatment or final disposal of such fluorescent powders. PMID:21840197

  8. Some aspects of the geochemistry of yttrium and the lanthanides

    USGS Publications Warehouse

    Fleischer, Michael

    1965-01-01

    Recent data on the relative abundances of the lanthanides and yttrium in meteorites, basaltic rocks, granitic rocks and sedimentary rocks are reviewed. It is shown that the data are inadequate to substantiate or to disprove Taylor's derivation from these data of a 1:1 abundance ratio of basaltic to granitic rocks in the continental crust. Graphs are given to illustrate the variation of lanthanides in minerals with paragenesis. Both the paragenesis and the crystal chemistry of minerals affect the composition of the lanthanides.

  9. Characteristics of yttrium oxide laser ceramics with additives

    SciTech Connect

    Osipov, V V; Solomonov, V I; Orlov, A N; Shitov, V A; Maksimov, R N; Spirina, A V

    2013-03-31

    Neodymium- or ytterbium-doped laser ceramics with a disordered crystal-field structure formed by introduction of iso- and heterovalent elements into yttrium oxide are studied. It is shown that these additives broaden the spectral band of laser transitions, which makes it possible to use ceramics as active laser media emitting ultrashort pulses. Lasing was obtained in several samples of this ceramics. At the same time, it is shown that addition of zirconium and hafnium stimulates the Foerster quenching of upper laser levels and pump levels. (extreme light fields and their applications)

  10. Enhanced spin pumping at yttrium iron garnet/Au interfaces

    SciTech Connect

    Burrowes, C.; Heinrich, B.; Kardasz, B.; Montoya, E. A.; Girt, E.; Sun Yiyan; Song, Young-Yeal; Wu Mingzhong

    2012-02-27

    Spin injection across the ferrimagnetic insulator yttrium iron garnet (YIG)/normal metal Au interface was studied using ferromagnetic resonance. The spin mixing conductance was determined by comparing the Gilbert damping parameter {alpha} in YIG/Au and YIG/Au/Fe heterostructures. The main purpose of this study was to correlate the spin pumping efficiency with chemical modifications of the YIG film surface using in situ etching and deposition techniques. By means of Ar{sup +} ion beam etching, one is able to increase the spin mixing conductance at the YIG/Au interface by a factor of 5 compared to the untreated YIG/Au interface.

  11. Knee arthroscopy after yttrium or osmic acid injection

    SciTech Connect

    Guaydier-Souquieres, C.; Beguin, J.; Ollivier, D.; Loyau, G.

    1989-01-01

    This study presents the macroscopic and histologic results of 35 knee arthroscopies performed on patients with rheumatoid arthritis, some months after an yttrium or osmic acid intraarticular injection. The procedure was most often performed after a failure of the injection or a relapse of synovitis. Arthroscopy provides an understanding of the cause of synoviorthesis failure--insufficient action of the product on the synovitis or its poor diffusion, fibri-nonecrotic deposits, or cartilaginous lesions--and may be used both diagnostically and therapeutically.

  12. Temporary Arterial Balloon Occlusion as an Adjunct to Yttrium-90 Radioembolization

    SciTech Connect

    Hagspiel, Klaus D.; Nambiar, Ashwin; Hagspiel, Lauren M.; Ahmad, Ehab Ali; Bozlar, Ugur

    2013-06-15

    Purpose. This study was designed to describe the technique of arterial occlusion using a temporary occlusion balloon system as an alternative to coil occlusion during Yttrium-90 radioembolization of hepatic tumors. Methods. Review of charts, angiography, and follow-up imaging studies of consecutive patients undergoing oncological embolization procedures in which a HyperForm system (ev3 Neurovascular, Irvine, CA) was used. Intraprocedural target vessel occlusion and patency of the target vessel on follow-up were recorded. Clinical data and Bremsstrahlung scans were reviewed for evidence of nontarget embolization. Results. Four radioembolization procedures were performed in three patients (all female, age 48-54 (mean 52) years). Five arteries were temporarily occluded (three gastroduodenal arteries, one right gastric artery, and one cystic artery). All radioembolization procedures were successfully completed. Follow-up imaging (either digital subtraction angiography (DSA) or computed tomography angiography (CTA)) was available for all patients between 28-454 (mean 183) days following the procedure, demonstrating all five vessels to be patent. No clinical or imaging evidence for nontarget embolization was found. Conclusions. Temporary balloon occlusion of small and medium-sized arteries during radioembolization allows safe therapy with preserved postprocedural vessel patency on early and midterm follow-up.

  13. Nanoscale fullerene compression of an yttrium carbide cluster.

    PubMed

    Zhang, Jianyuan; Fuhrer, Tim; Fu, Wujun; Ge, Jiechao; Bearden, Daniel W; Dallas, Jerry; Duchamp, James; Walker, Kenneth; Champion, Hunter; Azurmendi, Hugo; Harich, Kim; Dorn, Harry C

    2012-05-23

    The nanoscale parameters of metal clusters and lattices have a crucial influence on the macroscopic properties of materials. Herein, we provide a detailed study on the size and shape of isolated yttrium carbide clusters in different fullerene cages. A family of diyttrium endohedral metallofullerenes with the general formula of Y(2)C(2n) (n = 40-59) are reported. The high field (13)C nuclear magnetic resonance (NMR) and density functional theory (DFT) methods are employed to examine this yttrium carbide cluster in certain family members, Y(2)C(2)@D(5)(450)-C(100), Y(2)C(2)@D(3)(85)-C(92), Y(2)C(2)@C(84), Y(2)C(2)@C(3v)(8)-C(82), and Y(2)C(2)@C(s)(6)-C(82). The results of this study suggest that decreasing the size of a fullerene cage with the same (Y(2)C(2))(4+) cluster results in nanoscale fullerene compression (NFC) from a nearly linear stretched geometry to a constrained "butterfly" structure. The (13)C NMR chemical shift and scalar (1)J(YC) coupling parameters provide a very sensitive measure of this NFC effect for the (Y(2)C(2))(4+) cluster. The crystal structural parameters of a previously reported metal carbide, Y(2)C(3) are directly compared to the (Y(2)C(2))(4+) cluster in the current metallofullerene study. PMID:22497289

  14. MCrAlY bond coat with enhanced Yttrium layer

    DOEpatents

    Jablonski, Paul D; Hawk, Jeffrey A

    2015-04-21

    One or more embodiments relates to an MCrAlY bond coat comprising an MCrAlY layer in contact with a Y--Al.sub.2O.sub.3 layer. The MCrAlY layer is comprised of a .gamma.-M solid solution, a .beta.-MAl intermetallic phase, and Y-type intermetallics. The Y--Al.sub.2O.sub.3 layer is comprised of Yttrium atoms coordinated with oxygen atoms comprising the Al.sub.2O.sub.3 lattice. Both the MCrAlY layer and the Y--Al.sub.2O.sub.3 layer have a substantial absence of Y--Al oxides, providing advantage in the maintainability of the Yttrium reservoir within the MCrAlY bulk. The MCrAlY bond coat may be fabricated through application of a Y.sub.2O.sub.3 paste to an MCrAlY material, followed by heating in a non-oxidizing environment.

  15. Enhanced Arsenate Removal Performance in Aqueous Solution by Yttrium-Based Adsorbents.

    PubMed

    Lee, Sang-Ho; Kim, Kyoung-Woong; Lee, Byung-Tae; Bang, Sunbaek; Kim, Hyunseok; Kang, Hyorang; Jang, Am

    2015-10-01

    Arsenic contamination in drinking water has become an increasingly important issue due to its high toxicity to humans. The present study focuses on the development of the yttrium-based adsorbents, with basic yttrium carbonate (BYC), Ti-loaded basic yttrium carbonate (Ti-loaded BYC) and yttrium hydroxide prepared using a co-precipitation method. The Langmuir isotherm results confirmed the maximum adsorption capacity of Ti-loaded BYC (348.5 mg/g) was 25% higher than either BYC (289.6 mg/g) or yttrium hydroxide (206.5 mg/g) due to its increased specific surface area (82 m²/g) and surface charge (PZC: 8.4). Pseudo first- and second-order kinetic models further confirmed that the arsenate removal rate of Ti-loaded BYC was faster than for BYC and yttrium hydroxide. It was subsequently posited that the dominant removal mechanism of BYC and Ti-loaded BYC was the carbonate-arsenate ion exchange process, whereas yttrium hydroxide was regarded to be a co-precipitation process. The Ti-loaded BYC also displayed the highest adsorption affinity for a wide pH range (3-11) and in the presence of coexisting anionic species such as phosphate, silicate, and bicarbonate. Therefore, it is expected that Ti-loaded BYC can be used as an effective and practical adsorbent for arsenate remediation in drinking water. PMID:26516879

  16. Enhanced Arsenate Removal Performance in Aqueous Solution by Yttrium-Based Adsorbents

    PubMed Central

    Lee, Sang-Ho; Kim, Kyoung-Woong; Lee, Byung-Tae; Bang, Sunbaek; Kim, Hyunseok; Kang, Hyorang; Jang, Am

    2015-01-01

    Arsenic contamination in drinking water has become an increasingly important issue due to its high toxicity to humans. The present study focuses on the development of the yttrium-based adsorbents, with basic yttrium carbonate (BYC), Ti-loaded basic yttrium carbonate (Ti-loaded BYC) and yttrium hydroxide prepared using a co-precipitation method. The Langmuir isotherm results confirmed the maximum adsorption capacity of Ti-loaded BYC (348.5 mg/g) was 25% higher than either BYC (289.6 mg/g) or yttrium hydroxide (206.5 mg/g) due to its increased specific surface area (82 m2/g) and surface charge (PZC: 8.4). Pseudo first- and second-order kinetic models further confirmed that the arsenate removal rate of Ti-loaded BYC was faster than for BYC and yttrium hydroxide. It was subsequently posited that the dominant removal mechanism of BYC and Ti-loaded BYC was the carbonate-arsenate ion exchange process, whereas yttrium hydroxide was regarded to be a co-precipitation process. The Ti-loaded BYC also displayed the highest adsorption affinity for a wide pH range (3–11) and in the presence of coexisting anionic species such as phosphate, silicate, and bicarbonate. Therefore, it is expected that Ti-loaded BYC can be used as an effective and practical adsorbent for arsenate remediation in drinking water. PMID:26516879

  17. Recovery of yttrium from cathode ray tubes and lamps’ fluorescent powders: experimental results and economic simulation

    SciTech Connect

    Innocenzi, V. De Michelis, I.; Ferella, F.; Vegliò, F.

    2013-11-15

    Highlights: • Fluorescent powder of lamps. • Fluorescent powder of cathode ray rubes. • Recovery of yttrium from fluorescent powders. • Economic simulation for the processes to recover yttrium from WEEE. - Abstract: In this paper, yttrium recovery from fluorescent powder of lamps and cathode ray tubes (CRTs) is described. The process for treating these materials includes the following: (a) acid leaching, (b) purification of the leach liquors using sodium hydroxide and sodium sulfide, (c) precipitation of yttrium using oxalic acid, and (d) calcinations of oxalates for production of yttrium oxides. Experimental results have shown that process conditions necessary to purify the solutions and recover yttrium strongly depend on composition of the leach liquor, in other words, whether the powder comes from treatment of CRTs or lamp. In the optimal experimental conditions, the recoveries of yttrium oxide are about 95%, 55%, and 65% for CRT, lamps, and CRT/lamp mixture (called MIX) powders, respectively. The lower yields obtained during treatments of MIX and lamp powders are probably due to the co-precipitation of yttrium together with other metals contained in the lamps powder only. Yttrium loss can be reduced to minimum changing the experimental conditions with respect to the case of the CRT process. In any case, the purity of final products from CRT, lamps, and MIX is greater than 95%. Moreover, the possibility to treat simultaneously both CRT and lamp powders is very important and interesting from an industrial point of view since it could be possible to run a single plant treating fluorescent powder coming from two different electronic wastes.

  18. Coordination between yttrium ions and amide groups of polyamide 6 and the crystalline behavior of polyamide 6/yttrium composites

    NASA Astrophysics Data System (ADS)

    Liu, Shaoxuan; Zhang, Chengfeng; Liu, Yuhai; Zhao, Ying; Xu, Yizhuang; Ozaki, Yukihiro; Wu, Jinguang

    2012-08-01

    Different amounts of yttrium ions were introduced into polyamide 6 (PA6) matrix by solution casting process. Structure, morphology and properties of the obtained PA6/Y3+ composite films were investigated by using FT-IR spectroscopy, Raman spectroscopy, scanning electron microscope (SEM), polarized optical microscope (POM) and differential scanning calorimeter (DSC) methods. Yttrium ions show strong coordination ability and their complexation with amide groups of PA6 can be reflected by the appearance of new bands in the amide A and amide I regions in FT-IR and Raman spectra. Furthermore, the FT-IR and Raman spectra of the PA6/Y3+ composite show that the resultant chain conformations of the amide groups in the composite films are twisted from the ideal trans conformation. The DSC results reveal that Y3+ ions cause a significant reduction of the melting point of PA6. In addition, the existence of Y3+ prevents the crystallization of molten PA6/Y3+ composite films during the cooling process. Moreover, the PA6/Y3+ composite can convert into ? phase PA6 or ? phase PA6 when different solvents are used to remove Y3+ ions and induce crystallization of PA6.

  19. WSR-88D Cell Trends

    NASA Technical Reports Server (NTRS)

    Wheeler, Mark M.

    1998-01-01

    This report documents the Applied Meteorology Unit's evaluation of the Cell Trends display as a tool for radar operators to use in their evaluation of storm cell strength. The objective of the evaluation is to assess the utility of the WSR-88D graphical Cell Trends display for local radar cell interpretation in support of the 45th Weather Squadron (45 WS), Spaceflight Meteorology Group (SMG), and National Weather Service (NWS) Melbourne (MLB) operational requirements. The analysis procedure was to identify each cell and track the maximum reflectivity, height of maximum reflectivity, storm top, storm base, hail and severe hail probability, cell-based Vertically Integrated Liquid (VIL) and core aspect ratio using WATADS Build 9.0 cell trends information. One problem noted in the analysis phase was that the Storm Cell Identification and Tracking (SCIT) algorithm had a difficult time tracking the small cells associated with the Florida weather regimes. The analysis indicated numerous occasions when a cell track would end or an existing cell would be give a new ID in the middle of its life cycle. This investigation has found that most cells, which produce hail or microburst events, have discernable Cell Trends signatures. Forecasters should monitor the PUP's Cell Trends display for cells that show rapid (1 scan) changes in both the heights of maximum reflectivity and cell-based VIEL. It is important to note that this a very limited data set (four case days). Fifty-two storm cells were analyzed during those four days. The above mentioned t=ds, increase in the two cell attributes for hail events and decrease in the two cell attributes for wind events were noted in most of the cells. The probability of detection was 88% for both events. The False Alarm Rate (FAR) was a 36% for hail events and a respectable 25% for microburst events. In addition the Heidke Skill Score (HSS) is 0.65 for hail events and 0.67 for microburst events. For random forecast the HSS is 0 and that a perfect score is 1.

  20. Modification of aluminide coating with yttrium for improved resistance to corrosive erosion

    SciTech Connect

    Zhang, T.; Luo, Y.; Li, D.Y.

    1999-12-01

    Aluminide coatings on a mild steel substrate were modified by using an oxygen-active element, yttrium, for improved resistance to corrosive erosion. The performance of the yttrium-containing coating during the following three erosion conditions was evaluated: dry sand erosion at different temperatures, erosion in a dilute NaCl slurry containing 30% silica sand, and erosion in a dilute H{sub 2}SO{sub 4} slurry containing 30% silica sand. Results of the study demonstrated that yttrium significantly improved the resistance of the aluminide coating to both corrosive erosion and dry sand erosion.

  1. Synthesis and characterization of nanocrystalline yttrium oxide prepared with tetraalkylammonium hydroxides

    SciTech Connect

    Fokema, M.D.; Chiu, E.; Ying, J.Y.

    2000-04-04

    Controlled chemical precipitation of yttrium hydroxynitrate has been used to synthesize nanocrystalline yttrium oxide powders with high thermal stability. The type of base employed as the precipitating agent has a significant effect on the properties of the yttrium oxide product. Precipitation with tetraalkylammonium hydroxides was shown to produce a much finer-grained product than a conventional ammonium hydroxide synthesis route. This is attributed to the higher pH that can be achieved with tetraalkylammonium hydroxides, as well as the ability of tetraalkylammonium cations to inhibit precipitate particle growth by lowering the rate of diffusion of soluble precursors to the particle surface.

  2. Treatment of exhaust fluorescent lamps to recover yttrium: Experimental and process analyses

    SciTech Connect

    De Michelis, Ida; Ferella, Francesco; Varelli, Ennio Fioravante; Veglio, Francesco

    2011-12-15

    Highlights: > Recovery of yttrium from spent fluorescent lamps by sulphuric acid leaching. > The use of sulphuric acid allows to reduce calcium dissolutions. > Main contaminant of fluorescent powder are Si, Pb, Ca and Ba. > Hydrated yttrium oxalate, recovered by selective precipitation, is quite pure (>90%). > We have studied the whole process for the treatment of dangerous waste (plant capability). - Abstract: The paper deals with recovery of yttrium from fluorescent powder coming from dismantling of spent fluorescent tubes. Metals are leached by using different acids (nitric, hydrochloric and sulphuric) and ammonia in different leaching tests. These tests show that ammonia is not suitable to recover yttrium, whereas HNO{sub 3} produces toxic vapours. A full factorial design is carried out with HCl and H{sub 2}SO{sub 4} to evaluate the influence of operating factors. HCl and H{sub 2}SO{sub 4} leaching systems give similar results in terms of yttrium extraction yield, but the last one allows to reduce calcium extraction with subsequent advantage during recovery of yttrium compounds in the downstream. The greatest extraction of yttrium is obtained by 20% w/v S/L ratio, 4 N H{sub 2}SO{sub 4} concentration and 90 deg. C. Yttrium and calcium yields are nearly 85% and 5%, respectively. The analysis of variance shows that acid concentration alone and interaction between acid and pulp density have a significant positive effect on yttrium solubilization for both HCl and H{sub 2}SO{sub 4} medium. Two models are empirically developed to estimate yttrium and calcium concentration during leaching. Precipitation tests demonstrate that at least the stoichiometric amount of oxalic acid is necessary to recover yttrium efficiently and a pure yttrium oxalate n-hydrate can be produced (99% grade). The process is economically feasible if other components of the fluorescent lamps (glass, ferrous and non-ferrous scraps) are recovered after the equipment dismantling and valorized, besides the cost that is usually paid to recycling companies for collection, treatment or final disposal of such fluorescent powders.

  3. Yttrium radiosynoviorthesis in the treatment of knee arthritis in rheumatoid arthritis: a systematic review

    PubMed Central

    Heuft-Dorenbosch, L.; de Vet, H. C W; van der Linden, S.

    2000-01-01

    OBJECTIVE—To consider the question: How strong is the evidence in favour of yttrium synovectomy in chronic knee arthritis in patients with rheumatoid arthritis in comparison with placebo and intra-articular steroid treatment??METHODS—A systematic review of the literature was performed using Medline and the Embase database.?RESULTS—Initially, seven papers were identified, but only two met the inclusion criteria. Neither study showed evidence in favour of yttrium synovectomy.?CONCLUSION—From the point of view of evidence based medicine it should be seriously questioned whether yttrium synovectomy deserves a place in clinical practice.?? PMID:10913051

  4. Nickel hexa­yttrium deca­iodide, [NiY6]I10

    PubMed Central

    Steinberg, Simon; Meyer, Gerd

    2014-01-01

    Comproportionation reactions of yttrium triiodide, yttrium and nickel led to the formation of the compound [NiY6]I10, which is isostructural with the prototypical [RuY6]I10. In particular, [NiY6]I10 is composed of isolated nickel centered yttrium octa­hedra (site symmetry -1) that are further surrounded by iodide ligands to construct a three-dimensional cluster complex framework. Although this compound has been previously detected by powder X-ray diffraction techniques [Payne & Corbett (1990 ?). Inorg. Chem. 29, 2246–2251], details of the crystal structure for triclinic [NiY6]I10 were not provided. PMID:24940186

  5. 7 CFR 982.88 - Amendments.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE HAZELNUTS GROWN IN OREGON AND WASHINGTON Order Regulating Handling Miscellaneous Provisions § 982.88 Amendments....

  6. 7 CFR 982.88 - Amendments.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE HAZELNUTS GROWN IN OREGON AND WASHINGTON Order Regulating Handling Miscellaneous Provisions § 982.88 Amendments....

  7. 7 CFR 982.88 - Amendments.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE HAZELNUTS GROWN IN OREGON AND WASHINGTON Order Regulating Handling Miscellaneous Provisions § 982.88 Amendments....

  8. 7 CFR 982.88 - Amendments.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE HAZELNUTS GROWN IN OREGON AND WASHINGTON Order Regulating Handling Miscellaneous Provisions § 982.88 Amendments....

  9. 7 CFR 982.88 - Amendments.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE HAZELNUTS GROWN IN OREGON AND WASHINGTON Order Regulating Handling Miscellaneous Provisions § 982.88 Amendments....

  10. STS-88 Day 11 Highlights

    NASA Technical Reports Server (NTRS)

    1998-01-01

    On this eleventh day of the STS-88 mission, the flight crew, Commander Robert D. Cabana, Pilot Frederick W. Sturckow, and Mission Specialists Nancy J. Currie, James H. Newman, Jerry L. Ross, and Sergei Krikalev are awakened with the song "Goodnight, Sweetheart, Goodnight". Pilot Rick Sturckow undocks Endeavour from the station and backs the shuttle away to a distance of 450 feet above the station before beginning a nose-forward fly-around. Later Cabana, Sturckow and Ross deploy the SAC-A satellite from Endeavour's payload bay. SAC-A is a small, self-contained, non-recoverable satellite built by the Argentinean National Commission of Space Activities. The cube-shaped, 590-pound satellite will test and characterize the performance of new equipment and technologies that may be used in future scientific or operational missions. The payload includes a differential global positioning system, a magnetometer, silicon solar cells, a charge-coupled device Earth camera and a whale tracker experiment.

  11. STS-88 Day 10 Highlights

    NASA Technical Reports Server (NTRS)

    1998-01-01

    On this tenth day of the STS-88 mission, the flight crew, Commander Robert D. Cabana, Pilot Frederick W. Sturckow, and Mission Specialists Nancy J. Currie, James H. Newman, Jerry L. Ross, and Sergei Krikalev are awakened by the sounds of Elvis Presley's "Hound Dog". Today's activities are devoted mostly to tasks that ready the station for future assembly work. The crew's first job is to release some cable ties on four cables connected on an earlier space walk, three located on Unity's upper mating adapter and one on its lower adapter, to relieve tension on the lines. The space walkers also will check an insulation cover on one cable connection on the lower Pressurized Mating Adapter (PMA 2) to make sure it is fully installed. Near the end of the space walk, the astronauts conduct a detailed photographic survey of the space station from top to bottom. Finally, each astronaut test fires the Simplified Aid for Extravehicular Activity Rescue (SAFER) jet backpacks they are wearing, a type of space "lifejacket," that would allow an astronaut to fly back to the station if they should ever become untethered.

  12. Analysis of Prognostic Factors After Yttrium-90 Radioembolization of Advanced Hepatocellular Carcinoma

    SciTech Connect

    Inarrairaegui, Mercedes; Martinez-Cuesta, Antonio; Rodriguez, Macarena; Bilbao, J. Ignacio

    2010-08-01

    Purpose: To analyze which patient-, tumor-, and treatment-related factors may influence outcome after {sup 90}Y radioembolization ({sup 90}Y-RE) for hepatocellular carcinoma (HCC). Patients and Methods: Seventy-two consecutive patients with advanced HCC treated with {sup 90}Y-RE were studied to detect which factors may have influenced response to treatment and survival. Results: Median overall survival was 13 months (95% confidence interval, 9.6-16.3 months). In univariate analysis, survival was significantly better in patients with one to five lesions (19 vs. 8 months, p = 0.001) and in patients with alpha-fetoprotein <52 UI/mL (24 vs. 11 months, p = 0.002). The variation in target tumor size and the appearance of new lesions were analyzed among 50 patients with measurable tumors. A decrease in target tumor size was observed in most patients, and the intensity of such decrease was not associated with any of the factors under study. Patients who developed new lesions in the treated liver (and also in the nontargeted liver) at month 3 more frequently had more than five nodules, bilobar disease, and alpha-fetoprotein >52 UI/mL, and their survival in the multivariate analysis was significantly worse (hazard ratio, 4.7; 95% confidence interval, 13-1.73) (p = 0.002). Conclusions: Yttrium-90 radioembolization results in control of target lesions in the majority of patients with HCC but does not prevent the development of new lesions. Survival of patients treated with {sup 90}Y-RE seems to depend largely on factors related to the aggressiveness of the disease (number of nodules, levels of alpha-fetoprotein, and presence of microscopic disease).

  13. Measurements of High Energy Neutron Spectrum (> 10 MeV) by Using Yttrium Foils in a U/Pb Assembly

    NASA Astrophysics Data System (ADS)

    Bielewicz, M.; Strugalska-Gola, E.; Szuta, M.; Wojciechowski, A.; Kadykov, M.; Tyutyunnikov, S.

    2014-05-01

    Study of deep subcritical electronuclear systems and radioactive waste transmutation using relativistic beams were performed. This work is a preliminary step toward the study of the physical properties of Accelerator Driven Systems, in which a deeply subcritical active core is irradiated by a pulsed beam of relativistic ions. The long-range goal of the project is to study the capabilities of such systems with a hard neutron spectrum, for transmutation of radioactive nuclear wastes. Two experimental assemblies, “Energy plus Transmutation” (2006-2009) and “Quinta” (2011-), were irradiated by 1 to 6 GeV deuteron beams using the JINR NUCLOTRON accelerator. The main difference between the two experimental setups is the spallation target - lead or natural uranium. We attempt to obtain neutron energy spectra inside the volume of these assemblies using threshold reactions in natural yttrium (89Y) foils. Some results from three different experiments are presented.

  14. Growth of different phases of yttrium manganese oxide thin films by pulsed laser deposition

    SciTech Connect

    Kumar, Manish; Choudhary, R. J.; Phase, D. M.

    2012-06-05

    Various phases of yttrium manganese oxide (YMO) thin films have been synthesized on different substrates from a single target of h-YMnO{sub 3}. It is observed that the phase stability and crystallinity of YMO thin films depend on the substrate used and oxygen partial pressure (OPP). (110) oriented and polycrystalline growth of h-YMnO{sub 3} are observed on the Al{sub 2}O{sub 3} (0001) and NGO (110) substrates respectively, when grown in OPP {approx_equal} 10{sup -6} Torr. While for similar OPP value, growth of mixed phases (h-YMnO{sub 3} and o-YMn{sub 2}O{sub 5}) is observed on Si (001) substrate. Oriented growth of O-YMn{sub 2}O{sub 5} phase film on Si (001) substrate is observed first time, when deposited at OPP value of 225 and 350 mTorr. +3 and mixed oxidation states (+3 and +4) of Mn were confirmed by x-ray photoelectron spectroscopy in pure YMnO{sub 3} phase and YMn{sub 2}O{sub 5} phase respectively.

  15. Shape-Controlled Synthesis of Isotopic Yttrium-90-Labeled Rare Earth Fluoride Nanocrystals for Multimodal Imaging.

    PubMed

    Paik, Taejong; Chacko, Ann-Marie; Mikitsh, John L; Friedberg, Joseph S; Pryma, Daniel A; Murray, Christopher B

    2015-09-22

    Isotopically labeled nanomaterials have recently attracted much attention in biomedical research, environmental health studies, and clinical medicine because radioactive probes allow the elucidation of in vitro and in vivo cellular transport mechanisms, as well as the unambiguous distribution and localization of nanomaterials in vivo. In addition, nanocrystal-based inorganic materials have a unique capability of customizing size, shape, and composition; with the potential to be designed as multimodal imaging probes. Size and shape of nanocrystals can directly influence interactions with biological systems, hence it is important to develop synthetic methods to design radiolabeled nanocrystals with precise control of size and shape. Here, we report size- and shape-controlled synthesis of rare earth fluoride nanocrystals doped with the ?-emitting radioisotope yttrium-90 ((90)Y). Size and shape of nanocrystals are tailored via tight control of reaction parameters and the type of rare earth hosts (e.g., Gd or Y) employed. Radiolabeled nanocrystals are synthesized in high radiochemical yield and purity as well as excellent radiolabel stability in the face of surface modification with different polymeric ligands. We demonstrate the Cerenkov radioluminescence imaging and magnetic resonance imaging capabilities of (90)Y-doped GdF3 nanoplates, which offer unique opportunities as a promising platform for multimodal imaging and targeted therapy. PMID:26257288

  16. Electrical properties of strontium doped yttrium manganite oxide

    NASA Astrophysics Data System (ADS)

    Thakur, Rajesh K.; Thakur, Rasna; Kaurav, N.; Okram, G. S.; Gaur, N. K.

    2013-02-01

    Powders of Y1-xSrxMnO3 (x = 0.1 and 0.2) pervoskites were obtained by using conventional solid state reaction method and their electrical properties are carefully analyzed. The XRD pattern showed the pointed peaks which correspond to the hexagonal structure of the reported compounds with space group P63cm (25-1079). The resistivity versus temperature plot infers a semiconducting like behavior in both reported compounds. The suppression in the resistivity has been witnessed with increasing concentration Sr2+ ions at yttrium site. The small polaron hopping conductivity model adequately describes the electrical conductivity behavior. The activation energy (Ea) is found to decrease as the 'x' (Sr content) increases.

  17. Ferromagnetic resonance of sputtered yttrium iron garnet nanometer films

    SciTech Connect

    Liu, Tao; Chang, Houchen; Sun, Yiyan; Kabatek, Michael; Wu, Mingzhong; Vlaminck, Vincent; Hoffmann, Axel; Deng, Longjiang

    2014-05-07

    Growth of nm-thick yttrium iron garnet (YIG) films by sputtering and ferromagnetic resonance (FMR) properties in the films were studied. The FMR linewidth of the YIG film decreased as the film thickness was increased from several nanometers to about 100?nm. For films with very smooth surfaces, the linewidth increased linearly with frequency. In contrast, for films with big grains on the surface, the linewidth-frequency response was strongly nonlinear. Films in the 7–26?nm thickness range showed a surface roughness between 0.1?nm and 0.4?nm, a 9.48-GHz FMR linewidth in the 6–10?Oe range, and a damping constant of about 0.001.

  18. Nanoscale nonlinear effects in Erbium-implanted Yttrium Orthosilicate

    E-print Network

    Kukharchyk, Nadezhda; Probst, Sebastian; Xia, Kangwei; Becker, Hans-Werner; Pal, Shovon; Markmann, Sergej; Kolesov, Roman; Siyushev, Petr; Wrachtrup, Jörg; Ludwig, Arne; Ustinov, Alexey V; Wieck, Andreas D; Bushev, Pavel

    2015-01-01

    Doping of substrates at desired locations is a key technology for spin-based quantum memory devices. Focused ion beam implantation is well-suited for this task due to its high spacial resolution. In this work, we investigate ion-beam implanted erbium ensembles in Yttrium Orthosilicate crystals by means of confocal photoluminescence spectroscopy. The sample temperature and the post-implantation annealing step strongly reverberate in the properties of the implanted ions. We find that hot implantation leads to a higher activation rate of the ions. At high enough fluences, the relation between the fluence and final concentration of ions becomes non-linear. Two models are developed explaining the observed behaviour.

  19. Sodium yttrium fluoride based upconversion nano phosphors for biosensing

    NASA Astrophysics Data System (ADS)

    Parameswaran Nampi, Padmaja; Varma, Harikrishna; Biju, P. R.; Kakkar, Tarun; Jose, Gin; Saha, Sikha; Millner, Paul

    2015-06-01

    In the present study, NaYF4-Yb3+/Er3+ having the composition NaYF4-18%Yb3+/2%Er3+ and NaYF4-20%Yb3+/2%Er3+ with and without the addition of PVP (polyvinyl pyrolidone) have been synthesised by a solution method using NaF, yttrium nitrate, ytterbium nitrate and erbium nitrate as precursors. Upconversion spectra of prepared nanomaterial under 980 nm laser excitation have been studied. The variation in upconversion spectra with new born calf serum and myoglobin has been studied. Myoglobin (Mb) may be helpful when used in conjunction with other cardiac markers for rapid determination of acute myocardial ischemia, especially in patients with a typical chest pain or nonspecific ECG changes. The variation of UC fluorescence with addition of Mb indicates the suitability of using NaYF4 based UC nanoparticles in cardiac marker detection. The detailed study is currently under progress.

  20. Bridgman growth of large-aperture yttrium calcium oxyborate crystal

    SciTech Connect

    Wu, Anhua; Jiang, Linwen; Qian, Guoxing; Zheng, Yanqing; Xu, Jun; Shi, Erwei

    2012-09-15

    Highlights: ? YCOB is a novel non-linear optical crystal possessing good thermal, mechanical and nonlinear optical properties. ? Large size crystal growth is key technology question for YCOB crystal. ? YCOB crystals 3 in. in diameter were grown with modified vertical Bridgman method. ? It is a more effective growth method to obtain large size and high quality YCOB crystal. -- Abstract: Large-aperture yttrium calcium oxyborate YCa{sub 4}O(BO{sub 3}){sub 3} (YCOB) crystals with 3 in. in diameter were grown with modified vertical Bridgman method, and the large crystal plate (63 mm × 68 mm × 20 mm) was harvested for high-average power frequency conversion system. The crack, facet growth and spiral growth can be effectively controlled in the as-grown crystal, and Bridgman method displays more effective in obtain large size and high quality YCOB crystal plate than Czochralski technique.

  1. Structural and mechanical stability of dilute yttrium doped chromium

    NASA Astrophysics Data System (ADS)

    Lei, Jialin; Chen, Bin; Guo, Shengmin; Wang, Kaiyang; Tan, Liuxi; Khosravi, Ebrahim; Yan, Jinyuan; Vennila Raju, Selva; Yang, Shizhong

    2013-01-01

    Rare earth element doping of chromium is much desired for various applications, but is technically difficult because of dopant segregation. Using a room temperature mechanical alloying method, dilute yttrium doping into nanosized chromium was achieved. Synchrotron-based high-pressure X-ray diffraction indicated that the Cr-Y alloy (Cr0.97Y0.03) was stable at up to 39 GPa, and the bulk modulus was 203 ± 2.6 GPa. The experimental results were consistent with first-principles density functional theory simulation. The diffraction line broadening profiles indicated the deformation anisotropy of the nanoalloy. This study suggests that Cr0.97Y0.03 alloy is promising for ultrahigh stress applications such as airplane engines and land-based turbines.

  2. Rare Earth Doped Yttrium Aluminum Garnet (YAG) Selective Emitters

    NASA Technical Reports Server (NTRS)

    Chubb, Donald L.; Pal, AnnaMarie T.; Patton, Martin O.; Jenkins, Phillip P.

    1999-01-01

    As a result of their electron structure, rare earth ions in crystals at high temperature emit radiation in several narrow bands rather than in a continuous blackbody manner. This study presents a spectral emittance model for films and cylinders of rare earth doped yttrium aluminum garnets. Good agreement between experimental and theoretical film spectral emittances was found for erbium and holmium aluminum garnets. Spectral emittances of films are sensitive to temperature differences across the film. For operating conditions of interest, the film emitter experiences a linear temperature variation whereas the cylinder emitter has a more advantageous uniform temperature. Emitter efficiency is also a sensitive function of temperature. For holminum aluminum garnet film the efficiency is 0.35 at 1446K but only 0.27 at 1270 K.

  3. Celiac artery stenting to facilitate hepatic yttrium-90 radioembolization therapy.

    PubMed

    Chamarthy, Murthy R; Hughes, Terence W; Gupta, Mohit; Vossen, Josephina A; Velasco, Noel B; Zinn, Kenneth M

    2012-01-01

    Radioembolization offers a novel way to treat the nonresectable, liver predominant hepatic malignancies with better tumor response and overall progression-free survival rates. Transarterial catheter-based radioembolization procedure involves the hepatic arterial administration of glass- or resin-based beta emitting Yttirum-90 microspheres. Safe delivery of the tumoricidal radiation dose requires careful angiogram planning and coil embolization to quantify lung shunting and prevent systemic toxicity, respectively. Diagnostic pretreatment angiogram also serves to identify the hepatic arterial variant anatomy and other coexisting pathologies that might require a different or alternative approach. We describe a complex case of celiac artery stenosis with tortuous pancreaticoduodenal arterial arcade precluding access to the right hepatic artery for performing radioembolization. Celiac artery stenting of the stenosis was performed to facilitate subsequent safe and successful Yttrium-90 microsphere radioembolization. PMID:23304610

  4. Opportunity Spies Its Target

    NASA Technical Reports Server (NTRS)

    2004-01-01

    This is a forward-looking view of the Meridiani Planum plains that lie between the Mars Exploration Rover Opportunity and its primary drive target, 'Endurance Crater.' The images in this image mosaic were taken by the rover's panoramic camera on sol 88.

  5. Yttrium oxide transparent ceramics by low-temperature microwave sintering

    SciTech Connect

    Luo, Junming; Zhong, Zhenchen; Xu, Jilin

    2012-12-15

    Graphical abstract: The figure shows the SEM photos of the surfaces of the Y{sub 2}O{sub 3} transparent ceramic samples obtained by microwave sintering and vacuum sintering. It is clearly demonstrated that the grain distribution of the vacuum sintering sample is not uniform with the smallest and the largest particle size at about 2 ?m and 15 ?m respectively, while the grain distribution of microwave sintering sample is uniform with the average diameter at about 2–4 ?m (the smallest reported so far) and with no abnormal growth-up or coarsening phenomenon. We have further found out that the smaller the grain size, the higher the mechanical and optical properties. Display Omitted Highlights: ? The microwave sintering temperature of the sample is lower compared with vacuum. ? The microwave sintering time of the sample is shorter compared with vacuum. ? The mechanical properties of the microwave sintering sample is improved greatly. ? The Y{sub 2}O{sub 3} grain of microwave sintering sample is the smallest reported so far. -- Abstract: Yttrium oxide (Y{sub 2}O{sub 3}) transparent ceramics samples have been successfully fabricated by microwave sintering processing at relatively low temperatures. In comparison with the vacuum sintering processing, Y{sub 2}O{sub 3} transparent ceramics can be obtained by microwave sintering at lower sintering temperature and shorter sintering time, and they possess higher transmittances and mechanical properties. The technologies of low-temperature microwave sintering and the relationships of the microstructures and properties of the specified samples have been investigated in detail. We have found out that the low-temperature microwave sintering technique has its obvious advantages over the conventional methods in manufacturing yttrium oxide transparent ceramics.

  6. 38 CFR 8.8 - Health requirements.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2014-07-01 2014-07-01 false Health requirements. 8.8... INSURANCE Reinstatement § 8.8 Health requirements. National Service life insurance on any plan may be... month for which the unpaid premium was due, provided the applicant be in as good health on the date...

  7. 38 CFR 8.8 - Health requirements.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2011-07-01 2011-07-01 false Health requirements. 8.8... INSURANCE Reinstatement § 8.8 Health requirements. National Service life insurance on any plan may be... month for which the unpaid premium was due, provided the applicant be in as good health on the date...

  8. 38 CFR 8.8 - Health requirements.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Health requirements. 8.8... INSURANCE Reinstatement § 8.8 Health requirements. National Service life insurance on any plan may be... month for which the unpaid premium was due, provided the applicant be in as good health on the date...

  9. 38 CFR 8.8 - Health requirements.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2012-07-01 2012-07-01 false Health requirements. 8.8... INSURANCE Reinstatement § 8.8 Health requirements. National Service life insurance on any plan may be... month for which the unpaid premium was due, provided the applicant be in as good health on the date...

  10. 38 CFR 8.8 - Health requirements.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2013-07-01 2013-07-01 false Health requirements. 8.8... INSURANCE Reinstatement § 8.8 Health requirements. National Service life insurance on any plan may be... month for which the unpaid premium was due, provided the applicant be in as good health on the date...

  11. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 8 2012-01-01 2012-01-01 false Agents. 984.88 Section 984.88 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order...

  12. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 8 2014-01-01 2014-01-01 false Agents. 984.88 Section 984.88 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order...

  13. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 8 2013-01-01 2013-01-01 false Agents. 984.88 Section 984.88 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order...

  14. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 8 2011-01-01 2011-01-01 false Agents. 984.88 Section 984.88 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order...

  15. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Agents. 984.88 Section 984.88 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order...

  16. SAND88-0633 Unlimited Release

    E-print Network

    SAND88-0633 Unlimited Release Printed February 1990 Initial Structural Response Measurements a copy of any digitized SAND Report, you are required to update the markings to current standards. #12 codes Printed copy: A02 Microfiche copy: A01 #12;Distribution Category UC-261 SAND88-0633 Unlimited

  17. 40 CFR 88.302-94 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 CFR part 86 also apply to this part. All terms used in this part, but not defined in this section or in § 88.302-93 and 40 CFR part 86 shall have the meaning assigned to them in the Clean Air Act.../engine conversion configuration pursuant to the requirements of 40 CFR part 86 and this part 88....

  18. 40 CFR 88.302-94 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 CFR part 86 also apply to this part. All terms used in this part, but not defined in this section or in § 88.302-93 and 40 CFR part 86 shall have the meaning assigned to them in the Clean Air Act.../engine conversion configuration pursuant to the requirements of 40 CFR part 86 and this part 88....

  19. 49 CFR 230.88 - Throttles.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Throttles. 230.88 Section 230.88 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS Steam Locomotives and Tenders Throttles...

  20. 40 CFR 88.302-94 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 CFR part 86 also apply to this part. All terms used in this part, but not defined in this section or in § 88.302-93 and 40 CFR part 86 shall have the meaning assigned to them in the Clean Air Act.../engine conversion configuration pursuant to the requirements of 40 CFR part 86 and this part 88....

  1. Treatment of unresectable intrahepatic cholangiocarcinoma with yttrium-90 radioembolization: A systematic review and pooled analysis

    E-print Network

    Al-Adra, D. P.; Gill, R. S.; Axford, S. J.; Shi, X.; Kneteman, N.; Liau, S.-S.

    2014-10-07

    Radioembolization with yttrium-90 microspheres offers an alternative treatment option for patients with unresectable intrahepatic cholangiocarcinoma (ICC). However, the rarity and heterogeneity of ICC makes it difficult to draw firm conclusions...

  2. Sorptive separation of yttrium and cerium on a weakly basic anionite

    NASA Astrophysics Data System (ADS)

    Cheremisina, O. V.; Ponomareva, M. A.; Chirkst, D. E.; Lobacheva, O. L.; Shul'gin, I. A.

    2015-01-01

    The sorption of complex yttrium ions with Trilon B onto the weakly basic anionite D-403 in nitrate form from an acidic medium at pH 3 with constant ionic strength (NaNO3, 1 mol/kg) is investigated. A thermodynamic evaluation of the sorption isotherm of anionic yttrium complexes is performed using a method based on the linearization of the equation of the law of active mass, modified for ionic exchange reactions. The ionic exchange constant, the Gibbs free energy of ionic exchange, the capacity of the anionite, and the sorption limit of ethylenediaminetetraacetatoyttrate ions (EDTA yttrate ions) are calculated. Using a frontal version of ion exchange chromatography, cerium and yttrium are separated on D-403 anionite with a fraction of pure yttrium at the column outlet of no less than 30%.

  3. Recovery of yttrium from fluorescent powder of cathode ray tube, CRT: Zn removal by sulphide precipitation

    SciTech Connect

    Innocenzi, Valentina; De Michelis, Ida; Ferella, Francesco; Beolchini, Francesca; Kopacek, Bernd

    2013-11-15

    Highlights: • Treatment of fluorescent powder of CRT waste. • Factorial experimental designs to study acid leaching of fluorescent powder and the purification of leach liquors. • Recover of yttrium by precipitation using oxalic acid. • Suitable flowsheet to recover yttrium from fluorescent powder. - Abstract: This work is focused on the recovery of yttrium and zinc from fluorescent powder of cathode ray tube (CRT). Metals are extracted by sulphuric acid in the presence of hydrogen peroxide. Leaching tests are carried out according to a 2{sup 2} full factorial plan and the highest extraction yields for yttrium and zinc equal to 100% are observed under the following conditions: 3 M of sulphuric acid, 10% v/v of H{sub 2}O{sub 2} concentrated solution at 30% v/v, 10% w/w pulp density, 70 °C and 3 h of reaction. Two series of precipitation tests for zinc are carried out: a 2{sup 2} full factorial design and a completely randomized factorial design. In these series the factors investigated are pH of solution during the precipitation and the amount of sodium sulphide added to precipitate zinc sulphide. The data of these tests are used to describe two empirical mathematical models for zinc and yttrium precipitation yields by regression analysis. The highest precipitation yields for zinc are obtained under the following conditions: pH equal to 2–2.5% and 10–12% v/v of Na{sub 2}S concentrated solution at 10% w/v. In these conditions the coprecipitation of yttrium is of 15–20%. Finally further yttrium precipitation experiments by oxalic acid on the residual solutions, after removing of zinc, show that yttrium could be recovered and calcined to obtain the final product as yttrium oxide. The achieved results allow to propose a CRT recycling process based on leaching of fluorescent powder from cathode ray tube and recovery of yttrium oxide after removing of zinc by precipitation. The final recovery of yttrium is 75–80%.

  4. Analysis of Emission Spectra of Yttrium Monoiodide Produced by the Photodissociation of YI3

    NASA Astrophysics Data System (ADS)

    Chen, Wenting Wendy; Galvin, Thomas C.; Houlahan, Thomas J., Jr.; Eden, J. Gary

    2015-06-01

    Emission spectra of yttrium monoiodide (YI) spanning the 250 - 940 nm spectral region were generated by the photodissociation of yttrium tri-iodide under photoexcitation at 248 nm (KrF laser). Fluorescent spectra in the13,000 - 19,000 cm-1 and 24,000 - 40,000 cm-1 regions will be first reported. New vibrational transitions of YI in the 20,000 - 25,000 cm-1 interval will be presented as well.

  5. Diffusivity of hydrogen isotopes in liquid lithium and in solid yttrium

    SciTech Connect

    Buxbaum, R.E.; Johnson, E.F.

    1982-12-01

    The separation of tritium from liquid lithium at low concentrations is an important problem for fusion technology. One of the most promising techniques for effecting this separation involves sorbing the tritium on solid yttrium metal. Reliable diffusivity data are essential for a realistic evaluation of this technique. This paper reviews the bodies of relevant experimental diffusivity data, i.e., data on protium diffusion in liquid lithium, protium diffusion in solid yttrium, and the isotope effect in metals.

  6. The behaviour of selected yttrium containing bioactive glass microspheres in simulated body environments.

    PubMed

    Cacaina, D; Ylänen, H; Simon, S; Hupa, M

    2008-03-01

    The study aims at the manufacture and investigation of biodegradable glass microspheres incorporated with yttrium potentially useful for radionuclide therapy of cancer. The glass microspheres in the SiO2-Na2O-P2O5-CaO-K2O-MgO system containing yttrium were prepared by conventional melting and flame spheroidization. The behaviour of the yttrium silicate glass microspheres was investigated under in vitro conditions using simulated body fluid (SBF) and Tris buffer solution (TBS), for different periods of time, according to half-life time of the Y-90. The local structure of the glasses and the effect of yttrium on the biodegradability process were evaluated by Fourier Transform Infrared (FT-IR) spectroscopy and Back Scattered Electron Imaging of Scanning Electron Microscopy (BEI-SEM) equipped with Energy Dispersive X-ray (EDX) analysis. UV-VIS spectrometry and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used for analyzing the release behaviour of silica and yttrium in the two used solutions. The results indicate that the addition of yttrium to a bioactive glass increases its structural stability which therefore, induced a different behaviour of the glasses in simulated body environments. PMID:17701304

  7. Biodistribution of Yttrium-90-Labeled Anti-CD45 Antibody in a Nonhuman Primate Model

    SciTech Connect

    Nemecek, Eneida; Hamlin, Donald K.; Fisher, Darrell R.; Krohn, Kenneth A.; Pagel, John M.; Applebaum, F. R.; Press, Oliver W.; Matthews, Dana C.

    2005-01-15

    Radioimmunotherapy may improve the outcome of hematopoietic cell transplantation for hematologic malignancies by delivering targeted radiation to hematopoietic organs while relatively sparing nontarget organs. We evaluated the organ localization of yttrium-90-labeled anti-CD45 (90Y-anti-CD45) antibody in macaques, a model that had previously predicted iodine-131-labeled anti-CD-45 (131I-anti-CD45) antibody biodistribution in humans. Experimental Design: Twelve Macaca nemestrina primates received anti-CD45 antibody labeled with 1 to 2 mCi of 90Y followed by serial blood sampling and marrow and lymph node biopsies, and necropsy. The content of 90Y per gram of tissue was determined by liquid scintillation spectrometry. Time-activity curves were constructed using average isotope concentrations in each tissue at measured time points to yield the fractional residence time and estimate radiation absorbed doses for each organ per unit of administered activity. The biodistribution of 90Y-anti-CD45 antibody was then compared with that previously obtained with 131I-anti-CD45 antibody in macaques. Results: The spleen received 2,120, marrow 1,060, and lymph nodes 315 cGy/mCi of 90Y injected. The liver and lungs were the nontarget organs receiving the highest radiation absorbed doses (440 and 285 cGy/mCi, respectively). Ytrrium-90-labeled anti-CD45 antibody delivered 2.5- and 3.7-fold more radiation to marrow than to liver and lungs, respectively. The ratios previously observed with 131I-antiCD45 antibody were 2.5-and 2.2-fold more radiation to marrow than to liver and lungs, respectively. Conclusions: This study shows that 90Y-anti-CD45 antibody can deliver relatively selective radiation to hematopoietic tissues, with similar ratios of radiation delivered to target versus nontarget organs, as compared with the 131I immunoconjugate in the same animal model.

  8. Two myeloid differentiation factor 88 (MyD88) isoforms identified in ducks.

    PubMed

    Cheng, Yuqiang; Wang, Hengan; Yan, Yaxian; Ding, Chan; Sun, Jianhe

    2015-10-01

    MyD88 is an adaptor protein involved in the interleukin-1 receptor-induced and Toll-like receptor (TLR)-induced activation of nuclear factor-?B (NF-?B). In this study, we identified two isoforms of MyD88 gene, designated DuMyD88-X1 and DuMyD88-X2, from duck cells. Both variants were determined to have a death domain at the N-terminal and a Toll/IL-1R (TIR) domain at the C-terminal; however, the TIR domain of DuMyD88-X2 was incomplete and was 81 amino acids shorter than DuMyD88-X1. Quantitative real-time reverse transcription PCR revealed broad expression of both MyD88s. During Newcastle disease virus (NDV) challenge experiments, expression of the two genes increased significantly, with DuMyD88-X1 having a larger amplitude and longer duration. Overexpression of DuMyD88-X1 and DuMyD88-X2 induced the activation of NF-?B and IL-6 in vitro, suggesting that DuMyD88-X1 and DuMyD88-X2 may be important in the innate immune response. The results verify the existence of a MyD88-dependent signaling pathway in ducks and contribute to understanding the potential role of MyD88s in the innate immune response. PMID:26004012

  9. The High-Energy Transport Code HETC88

    SciTech Connect

    Alsmiller, R.G. Jr.; Alsmiller, F.S.; Gabriel, T.A.; Hermann, O.W.; Barnes, J.M.

    1989-01-01

    An upgraded version, HETC88, of the previously available High-Energy Transport Code HETC is briefly described. In the upgraded code, the particle production model from hadron-nucleus nonelastic collisions at energies greater than 5 GeV has been revised. At nucleon and ion energies below 5 GeV, HETC88 is not different from the code previously available. In particular, provision is still made to allow neutrons with energies less than or equal to20 MeV to be transported by none of the available codes designed for low-energy neutron transport. Calculated results for the longitudinal distribution of the flux of neutrons with energy greater than or equal to40 KeV in the Tevatron tunnel when 900 GeV protons interact with N/sub 2/ in a warm section are presented and compared with experimental data. Some disagreements between the calculated and measured neutron flux are found. For 20 TeV protons incident on a large cylindrical iron target, calculated ''star'' density results from HETC88, FLUKA87, CASIM, and MARS10 are also compared. 22 refs., 3 figs.

  10. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 984.88 Agents. The Secretary may,...

  11. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 984.88 Agents. The Secretary may,...

  12. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 984.88 Agents. The Secretary may,...

  13. 7 CFR 984.88 - Agents.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE WALNUTS GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 984.88 Agents. The Secretary may,...

  14. 32 CFR 88.4 - Policy.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...ASSISTANCE FOR MILITARY PERSONNEL § 88.4 Policy...complete the military personnel “life cycle.” This...the Service member's recruitment from the civilian...accommodate all eligible personnel, especially if referral...participate in transition planning and counseling to...

  15. 40 CFR 88.201-94 - Scope.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CLEAN-FUEL VEHICLES California Pilot Test Program § 88.201-94 Scope. Applicability. The requirements of this subpart shall apply to the...

  16. 40 CFR 88.202-94 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CLEAN-FUEL VEHICLES California Pilot Test Program § 88.202-94 Definitions. (a) The definitions in subpart A also apply to this subpart....

  17. 40 CFR 88.203-94 - Abbreviations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CLEAN-FUEL VEHICLES California Pilot Test Program § 88.203-94 Abbreviations. The abbreviations in subpart A of this part and in 40 CFR part 86 apply...

  18. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the same meaning given in the Clean Air Act and...

  19. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the same meaning given in the Clean Air Act and...

  20. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the same meaning given in the Clean Air Act and...

  1. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the same meaning given in the Clean Air Act and...

  2. 40 CFR 98.88 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.88 Definitions. All terms used in this subpart have the same meaning given in the Clean Air Act and...

  3. Linear and nonlinear diffraction of dipolar spin waves in yttrium iron garnet films observed by space-and time-resolved Brillouin light scattering

    E-print Network

    Linear and nonlinear diffraction of dipolar spin waves in yttrium iron garnet films observed of the observed phenomena. I. INTRODUCTION Magnetostatic spin waves in yttrium iron garnet YIG films provide

  4. Superconductivity at 23 K in yttrium palladium boride carbide

    NASA Astrophysics Data System (ADS)

    Cava, R. J.; Takagi, H.; Batlogg, B.; Zandbergen, H. W.; Krajewski, J. J.; Peck, W. F., Jr.; van Dover, R. B.; Felder, R. J.; Siegrist, T.; Mizuhashi, K.

    1994-01-01

    Copper oxide compounds have dominated superconductivity research since 1986 because of their very high transition temperatures (T(sub c)s). In contrast, no new families of high-T(sub c) intermetallic compounds have been discovered since the A15-type Nb3X compounds were first reported in 1953. The intermetallics with highest T(sub c)s have all been based on niobium, with the highest T(sub c)s being 20.7 K for bulk Nb(3)Ga and 23.2 K for sputtered films of Nb(3)Ge. Here we report the observation of superconductivity at 23 K in a multiple-phase bulk sample of a quaternary intermetallic, yttrium palladium boride carbide. This is higher than any T(sub c) reported previously for a bulk intermetallic compound. Although the materials are not yet single-phase, the superconducting volume fraction is large. We propose that this compound may represent the first of a new family of superconducting intermetallics with relatively high T(sub c)s.

  5. Shape evolution in Yttrium and Niobium neutron-rich isotopes

    E-print Network

    R. Rodriguez-Guzman; P. Sarriguren; L. M. Robledo

    2011-03-22

    The isotopic evolution of the ground-state nuclear shapes and the systematics of one-quasiproton configurations are studied in neutron-rich odd-A Yttrium and Niobium isotopes. We use a selfconsistent Hartree-Fock-Bogoliubov formalism based on the Gogny energy density functional with two parametrizations, D1S and D1M. The equal filling approximation is used to describe odd-A nuclei preserving both axial and time reversal symmetries. Shape-transition signatures are identified in the N=60 isotopes in both charge radii and spin-parities of the ground states. These signatures are a common characteristic for nuclei in the whole mass region. The nuclear deformation and shape coexistence inherent to this mass region are shown to play a relevant role in the understanding of the spectroscopic features of the ground and low-lying one-quasiproton states. Finally, a global picture of the neutron-rich A=100 mass region from Krypton up to Molybdenum isotopes is illustrated with the systematics of the nuclear charge radii isotopic shifts.

  6. Shape evolution in Yttrium and Niobium neutron-rich isotopes

    E-print Network

    Rodriguez-Guzman, R; Robledo, L M

    2011-01-01

    The isotopic evolution of the ground-state nuclear shapes and the systematics of one-quasiproton configurations are studied in neutron-rich odd-A Yttrium and Niobium isotopes. We use a selfconsistent Hartree-Fock-Bogoliubov formalism based on the Gogny energy density functional with two parametrizations, D1S and D1M. The equal filling approximation is used to describe odd-A nuclei preserving both axial and time reversal symmetries. Shape-transition signatures are identified in the N=60 isotopes in both charge radii and spin-parities of the ground states. These signatures are a common characteristic for nuclei in the whole mass region. The nuclear deformation and shape coexistence inherent to this mass region are shown to play a relevant role in the understanding of the spectroscopic features of the ground and low-lying one-quasiproton states. Finally, a global picture of the neutron-rich A=100 mass region from Krypton up to Molybdenum isotopes is illustrated with the systematics of the nuclear charge radii is...

  7. Yttrium 90 microspheres for the treatment of hepatocellular carcinoma.

    PubMed

    Memon, Khairuddin; Lewandowski, Robert J; Riaz, Ahsun; Salem, Riad

    2013-01-01

    Yttrium-90 microspheres are radioactive particles which are increasingly being employed for treating patients with unresectable hepatocellular carcinoma (HCC). The procedure is called radioembolization. It involves the injection of micron-sized embolic particles loaded with a radioisotope by use of transarterial techniques. Because of the sensitivity of liver parenchyma and relative insensitivity of tumor, external radiation has played a limited role in treating HCC. (90)Y administered via arterial route directs the highly concentrated radiation to the tumor while healthy liver parenchyma is relatively spared due to its preferential blood supply from portal venous blood. This technique has proven useful for the majority of patients with HCC as most of them present in advanced stage, beyond potentially curative options (resection/liver transplantation). (90)Y microspheres can be used in downstaging large tumors to bring within transplantable criteria, in patients with portal venous thrombosis due to tumor invasion and as palliative therapy. There are two available devices for (90)Y administration; TheraSphere® (glass based) and SIR-Spheres® (resin based). The procedure is performed on an outpatient basis. The incidence of complications is comparatively less and may include nausea, fatigue, abdominal pain, hepatic dysfunction, biliary injury, fibrosis, radiation pneumonitis, GI ulcers, and vascular injury; however, these can be avoided by meticulous pretreatment assessment, careful patient selection, and adequate dosimetry. This article explores the technical and clinical aspects of (90)Y radioembolization with keeping emphasis on patient selection, uses, and complications. PMID:22941023

  8. Nanoscale inhomogeneities in yttrium-barium-copper-oxide (YBCO) superconductors

    NASA Astrophysics Data System (ADS)

    Islam, Zahirul; Sinha, S. K.; Lang, J. C.; Liu, X.; Haskel, D.; Moss, S. C.; Srajer, G.; Veal, B. W.; Wermeille, D.; Lee, D. R.; Haeffner, D. R.; Welp, U.; Wochner, P.

    2004-03-01

    X-ray diffraction studies at the Advanced Photon Source reveal that nanoscale inhomogeneities, electronic or structural in origin, form in yttrium-barium-copper-oxide (YBa_2Cu_3O_6+x) superconductors and coexist with the superconducting (SC) state. Diffuse scattering from these inhomogeneous superstructures is due to atomic displacements with respect to equilibrium lattice sites (Z. Islam et al. Phys. Rev. B 66, 92501 (2002)), that are characterized by a wavevector of the form q=(q_x,0,0), where qx varies with hole doping from 2 unit cells (along shorter Cu-O-Cu direction) for very low doping to 4 unit cells at optimal doping. Interestingly, while these superstructures are 3-dimensionally ordered when the SC state is weakened (e.g., at x=0.4), as the doping increases, they become quasi 1D with correlation lengths comparable to SC coherence lengths in these cuprates. Recent first-principles calculations (D. de Fontaine et al., to be published) for the x=0.63 compound show that atomic displacements consistent with experimental data can be the result of ordering of O vacancies in YBCO. Models for various superstructures and their role in the phase diagram will be discussed.

  9. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8...

  10. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8...

  11. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8...

  12. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8...

  13. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8...

  14. 28 CFR 115.88 - Data review for corrective action.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...for corrective action. 115.88 Section 115.88 Judicial Administration DEPARTMENT OF JUSTICE (CONTINUED) PRISON RAPE ELIMINATION ACT NATIONAL STANDARDS Standards for Adult Prisons and Jails Data Collection and Review § 115.88...

  15. 28 CFR 115.88 - Data review for corrective action.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...for corrective action. 115.88 Section 115.88 Judicial Administration DEPARTMENT OF JUSTICE (CONTINUED) PRISON RAPE ELIMINATION ACT NATIONAL STANDARDS Standards for Adult Prisons and Jails Data Collection and Review § 115.88...

  16. 21 CFR 520.88d - Amoxicillin trihydrate soluble powder.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... false Amoxicillin trihydrate soluble powder. 520.88d Section 520.88d Food...88d Amoxicillin trihydrate soluble powder. (a) Specifications. Each gram... Administer by drench or by mixing in milk. Treatment should be...

  17. 21 CFR 520.88d - Amoxicillin trihydrate soluble powder.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... false Amoxicillin trihydrate soluble powder. 520.88d Section 520.88d Food...88d Amoxicillin trihydrate soluble powder. (a) Specifications. Each gram... Administer by drench or by mixing in milk. Treatment should be...

  18. 21 CFR 520.88d - Amoxicillin trihydrate soluble powder.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... false Amoxicillin trihydrate soluble powder. 520.88d Section 520.88d Food...88d Amoxicillin trihydrate soluble powder. (a) Specifications. Each gram... Administer by drench or by mixing in milk. Treatment should be...

  19. 21 CFR 520.88d - Amoxicillin trihydrate soluble powder.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... false Amoxicillin trihydrate soluble powder. 520.88d Section 520.88d Food...88d Amoxicillin trihydrate soluble powder. (a) Specifications. Each gram... Administer by drench or by mixing in milk. Treatment should be...

  20. Method of forming a relatively stable slip of silicon metal particles and yttrium containing particles

    NASA Technical Reports Server (NTRS)

    Dickie, Ray A. (Inventor); Mangels, John A. (Inventor)

    1984-01-01

    The method concerns forming a relatively stable slip of silicon metal particles and yttrium containing particles. In one embodiment, a casting slip of silicon metal particles is formed in water. Particles of a yttrium containing sintering aid are added to the casting slip. The yttrium containing sintering aid is a compound which has at least some solubility in water to form Y.sup.+3 ions which have a high potential for totally flocculating the silicon metal particles into a semiporous solid. A small amount of a fluoride salt is added to the casting slip which contains the yttrium containing sintering aid. The fluoride salt is one which will produce fluoride anions when dissolved in water. The small amount of the fluoride anions produced are effective to suppress the flocculation of the silicon metal particles by the Y.sup.+3 ions so that all particles remain in suspension in the casting slip and the casting slip has both an increased shelf life and can be used to cast articles having a relatively thick cross-section. The pH of the casting slip is maintained in a range from 7.5 to 9. Preferably, the fluoride salt used is one which is based on a monovalent cation such as sodium or ammonia. The steps of adding the yttrium containing sintering aid and the fluoride salt may be interchanged if desired, and the salt may be added to a solution containing the sintering aid prior to addition of the silicon metal particles.

  1. Hydrothermal synthesis and formation mechanism of hexagonal yttrium hydroxide fluoride nanobundles

    SciTech Connect

    Tian, Li; Sun, QiLiang; Zhao, RuiNi; He, HuiLin; Xue, JianRong; Lin, Jun

    2013-11-15

    Graphical abstract: The formation of yttrium hydroxide fluorides nanobundles can be expressed as a precipitation transformation from cubic NaYF{sub 4} to hexagonal NaYF{sub 4} and to hexagonal Y(OH){sub 2.02}F{sub 0.98} owing to ion exchange. - Highlights: • Novel Y(OH){sub 2.02}F{sub 0.98} nanobundles have been successfully prepared by hydrothermal method. • The branched nanobundles composed of numerous oriented-attached nanoparticles has been studied. • The growth mechanism is proposed to be ion exchange and precipitation transformation. - Abstract: This article presents the fabrication of hexagonal yttrium hydroxide fluoride nanobundles via one-pot hydrothermal process, using yttrium nitrate, sodium hydroxide and ammonia fluoride as raw materials to react in propanetriol solvent. The X-ray diffraction pattern clearly reveals that the grown product is pure yttrium hydroxide fluoride, namely Y(OH){sub 2.02}F{sub 0.98}. The morphology and microstructure of the synthesized product is testified to be nanobundles composed of numerous oriented-attached nanoparticles as observed from the field emission scanning electron microscopy (FESEM). The chemical composition was analyzed by the energy dispersive spectrum (EDS), confirming the phase transformation of the products which was clearly consistent with the result of XRD analysis. It is proposed that the growth of yttrium hydroxide fluoride nanobundles be attributed to ion exchange and precipitation transformation.

  2. Dopant effect of yttrium and the growth and adherence of alumina on nickel-aluminum alloys

    NASA Technical Reports Server (NTRS)

    Anderson, A. B.; Mehandru, S. P.; Smialek, J. L.

    1985-01-01

    The atom superposition and electron delocalization molecular orbital theory and large cluster models have been employed to study cation vacancy diffusion in alpha-Al2O3 and the bonding of alpha-Al2O3 to nickel, aluminum, and yttrium surfaces. Al(3+) diffusion barriers in alpha-Al2O3 by the vacancy mechanism are in reasonable agreement with experiment. The barrier to Y(3+) diffusion is predicted to be much higher. Since addition of yttrium to transition metal alloys is known to reduce the growth rate and stress convolutions in protective alumina scales, this result suggests the rate-limiting step in scale growth is cation vacancy diffusion. This may partially explain the beneficial effect of yttrium dopants on scale adhesion. The theory also predicts a very strong bonding between alumina and yttrium at the surface of the alloy. This may also be important to the adhesion phenomenon. It is also found that aluminum and yttrium atoms bond very strongly to nickel because of charge transfer from their higher lying valence orbitals to the lower lying nickel s-d band.

  3. Combined effects of prepulsing and target geometry on efficient extreme ultraviolet

    E-print Network

    Harilal, S. S.

    by decreasing pho- tons transmission (higher harmonic of Nd:yttrium-aluminum-garnet laser) or photons reflection (for CO2 laser). Optimization of target heating using prepulses or ablating low-density and nanoporous; revised manuscript received May 25, 2011; accepted for publication Jun. 8, 2011; published online Jul. 20

  4. Radioembolization with Yttrium-90 microspheres in hepatocellular carcinoma: Role and perspectives

    PubMed Central

    Mosconi, Cristina; Cappelli, Alberta; Pettinato, Cinzia; Golfieri, Rita

    2015-01-01

    Transarterial radioembolization (TARE) is a form of brachytherapy in which intra-arterially injected yttrium-90-loaded microspheres serve as a source for internal radiation purposes. On the average, it produces disease control rates exceeding 80% and it is a consolidated therapy for hepatocellular carcinoma (HCC); however, current data are all based on retrospective series or non-controlled prospective studies since randomized controlled trials comparing it with the other liver-directed therapies for intermediate and locally advanced stage HCC are still underway. The data available show that TARE provides similar or even better survival rates when compared to transarterial chemoembolization (TACE). First-line TARE is best indicated for both intermediate-stage patients (staged according to the barcelona clinic liver cancer staging classification) who have lesions which respond poorly to TACE due to multiple tumors or a large tumor burden, and for locally advanced-stage patients with solitary tumors, and segmental or lobar portal vein tumor thrombosis. In addition, emerging data have suggested the use of TARE in patients who are classified slightly beyond the Milan criteria regarding radical treatment for downstaging purposes. As a second-line treatment, TARE can also be applied in patients progressing to TACE or sorafenib; a large number of phase II/III trials are ongoing with the purpose of evaluating the best association with systemic therapies. Transarterial radioembolization is very well tolerated and has a low rate of complications which are mainly related to unintended non-target tissue irradiation, including the surrounding liver parenchyma. The complications can be additionally reduced by accurate patient selection and a strict pre-treatment evaluation including dosimetry and assessment of the vascular anatomy. Since a correct treatment algorithm for potential TARE candidates is not clear and standardized, this comprehensive review analyzes the best selection criteria for patients who really benefit from TARE and also the new advances of this therapy, which can be a very important weapon against HCC. PMID:25914774

  5. Synthesis, Structure, and Molecular Orbital Studies of Yttrium, Erbium, and Lutetium Complexes Bearing 2-Pyrazolato Ligands: Development of a New Class of Precursors for

    E-print Network

    Schlegel, H. Bernhard

    Synthesis, Structure, and Molecular Orbital Studies of Yttrium, Erbium, and Lutetium Complexes, Wisconsin 53706 ReceiVed March 23, 1999 Treatment of yttrium metal with bis(pentafluorophenyl)mercury (1 for 120 h afforded tris(3,5-di-tert-butylpyrazolato)bis- (pyridine)yttrium(III) (33%). In an analogous

  6. Direct atomic flux measurement of electron-beam evaporated yttrium with a diode-laser-based atomic absorption monitor at 668 nm

    E-print Network

    Fejer, Martin M.

    Direct atomic flux measurement of electron-beam evaporated yttrium with a diode-laser-based atomic May 1997 A direct measurement of atomic flux in e-beam evaporated yttrium has been demonstrated den- sity and velocity, and thus the atomic flux in an e-beam evaporated yttrium system with a diode

  7. Identification of spin wave modes in yttrium iron garnet strongly coupled to a co-axial N. J. Lambert, J. A. Haigh, and A. J. Ferguson

    E-print Network

    Jackson, Sophie

    Identification of spin wave modes in yttrium iron garnet strongly coupled to a co-axial cavity N. J wave excitation by spin currents due to thermal gradient and spin pumping in yttrium iron garnet pumping effects in yttrium iron garnet/Pt structures J. Appl. Phys. 111, 07C513 (2012); 10

  8. Energy levels of exciton traps in yttrium aluminum garnet single crystals C. R. Varney, D. T. Mackay, A. Pratt, S. M. Reda, and F. A. Selim

    E-print Network

    Collins, Gary S.

    Energy levels of exciton traps in yttrium aluminum garnet single crystals C. R. Varney, D. T of exciton traps in yttrium aluminum garnet single crystals C. R. Varney, D. T. Mackay, A. Pratt, S. M. Reda) Electronic defects and exciton traps were studied in yttrium aluminum garnet (YAG) single crystals

  9. PHYSICAL REVIEW B VOLUME 23, NUMBER 3 1 FEBRUARY 1981 Three-photon absorption in Nd-doped yttrium aluminum garnet

    E-print Network

    Boyd, Robert W.

    PHYSICAL REVIEW B VOLUME 23, NUMBER 3 1 FEBRUARY 1981 Three-photon absorption in Nd-doped yttrium observed in Nd-doped yttrium alumi- num garnet (Nd: YAG). This process probes the energy-level structure enhanced, three-, photon absorption in Nd-doped yttrium aluminum garnet (Y3Alg0~2) or Nd: YAG

  10. Superconductivity at 17 K in yttrium metal under nearly hydrostatic pressures up to 89 GPa J. J. Hamlin,1 V. G. Tissen,2 and J. S. Schilling1

    E-print Network

    Schilling, James

    Superconductivity at 17 K in yttrium metal under nearly hydrostatic pressures up to 89 GPa J. J anvil cell utilizing helium pressure medium, yttrium metal displays a superconducting transition studies show that yttrium metal follows the structure sequence hcpSm-typedhcptrigonal as the applied

  11. Bioactive glasses as potential radioisotope vectors for in situ cancer therapy: investigating the structural effects of yttrium.

    PubMed

    Christie, Jamieson K; Malik, Jahangir; Tilocca, Antonio

    2011-10-21

    The incorporation of yttrium in bioactive glasses (BGs) could lead to a new generation of radionuclide vectors for cancer therapy, with high biocompatibility, controlled biodegradability and the ability to enhance the growth of new healthy tissues after the treatment with radionuclides. It is essential to assess whether and to what extent yttrium incorporation affects the favourable properties of the BG matrix: ideally, one would like to combine the high surface reactivity typical of BGs with a slow release of radioactive yttrium. Molecular Dynamics simulations show that, compared to a BG composition with the same silica fraction, incorporation of yttrium results in two opposing effects on the glass durability: a more fragmented silicate network (leading to lower durability) and a stronger yttrium-mediated association between separate silicate fragments (leading to higher durability). The simulations also highlight a high site-selectivity and some clustering of yttrium cations, which are likely linked to the observed slow rate of yttrium released from related Y-BG compositions. Optimisation of yttrium BG compositions for radiotherapy applications thus depends on the delicate balance between these effects. PMID:21887425

  12. A randomized controlled trial of peeling and aspiration of Elschnig pearls and neodymium: yttrium-aluminium-garnet laser capsulotomy

    PubMed Central

    Bhargava, Rahul; Kumar, Prachi; Sharma, Shiv Kumar; Kaur, Avinash

    2015-01-01

    AIM To compare surgical peeling and aspiration and neodymium yttrium garnet laser capsulotomy for pearl form of posterior capsule opacification (PCO). METHODS A prospective, randomized, double blind, study was done at Rotary Eye Hospital, Maranda, Palampur, India, Santosh Medical College Hospital, Ghaziabad, India and Laser Eye Clinic, Noida India. Consecutive patients with pearl form of PCO following surgery, phacoemulsification, manual small incision cataract surgery and conventional extracapsular cataract extraction (ECCE) for age related cataract, were randomized to have peeling and aspiration or neodymium yttrium garnet laser capsulotomy. Corrected distance visual acuity (CDVA), intra-operative and post-operative complications were compared. RESULTS A total of 634 patients participated in the study, and 314 (49.5%) patients were randomized to surgical peeling and aspiration group and 320 (50.5%) to the Nd:YAG laser group. The mean pre-procedural logMAR CDVA in peeling and neodymium: yttrium-aluminium-garnet (Nd:YAG) laser group was 0.80±0.25 and 0.86±0.22, respectively. The mean final CDVA in peeling group (0.22±0.23) was comparable to Nd:YAG group (0.24±0.28; t test, P=0.240). There was a significant improvement in vision after both the procedures (P<0.001). A slightly higher percentage of patients in Nd:YAG laser group (283/88.3%) than in peeling group (262/83.4%) had a CDVA of 0.5 (20/63) or better at 9mo (P<0.001). On the contrary, patients having CDVA worse than 1.00 (20/200) was also significantly higher in Nd:YAG laser group as compared to peeling group (25/7.7% vs 15/4.7%, respectively). On application of ANCOVA, there was less than 0.001% risk that PCO thickness and total laser energy had no effect on rate of complications in Nd:YAG laser group and less than 0.001 % risk that PCO thickness had no effect on complications in peeling group respectively. Sum of square analysis suggests that in the Nd:YAG laser group, thick PCO had a stronger impact on complications (Fischer test probability, Pr<0.0001) than thin PCO and total laser energy (Fischer test probability, Pr<0.002), respectively; similarly, in peeling group, thick PCO and preoperative vision had a stronger effect on complications than thin PCO, respectively (Fischer test probability, Pr<0.001).The rate of complications like uveitis (P=0.527) and cystoid macular edema (P=0.068), did not differ significantly between both the groups. However, intraocular pressure spikes (P=0.046) and retinal detachment (P<0.001) were significantly higher in Nd:YAG laser group as compared to peeling group. Retinal detachment was more common in patients having degenerative myopia (7/87.5%, P<0.001). Recurrence of pearls was the most common cause of reduction of vision in the peeling group (24/7.6%, P<0.001). CONCLUSION There is no alternative to Nd:YAG laser capsulotomy for fibrous subtype of PCO. For pearl form of PCO, both techniques are comparable with regard to visual outcomes. Nd:YAG laser capsulotomy has a higher incidence of IOP spikes and retinal detachment whereas recurrence of pearls may occur after successful peeling and aspiration. When posterior capsulotomy is needed in patients with retinal degenerations, retinopathies and pre-existing retinal breaks, the clinician should be cautious about increased risks of possible complications of Nd:YAG laser capsulotomy. PMID:26086014

  13. Yttrium and aluminium complexes bearing dithiodiolate ligands: synthesis and application in cyclic ester polymerization.

    PubMed

    Meduri, A; Cozzolino, M; Milione, S; Press, K; Sergeeva, E; Tedesco, C; Mazzeo, M; Lamberti, M

    2015-11-01

    Yttrium and aluminium complexes of two dithiodiolate ligands that feature different bridges (CF3)2C(OH)CH2SRSCH2C(OH)(CF3)2 (L(1)-H2, R = CH2CH2 and L(2)-H2, R = C6H4) were synthesized in good yields by reacting tris(silylamide)yttrium or trimethylaluminium with one equivalent of the proligand. All complexes were characterized by NMR and elemental analysis, and single-crystal X-ray structural analysis was also performed for one of the yttrium complexes. The catalytic activities of the four complexes in the ring-opening polymerization of ?-caprolactone and rac-lactide have been investigated. Furthermore, DOSY experiment and DFT calculations have been carried out to determine the structure of the isopropoxo derivative of the complex L(2)Y amide. PMID:26406112

  14. Yttrium silicate and oxonitridosilicate luminescent materials from a silicone resin and nano-sized fillers

    NASA Astrophysics Data System (ADS)

    Bernardo, E.; Storti, E.; Quaranta, A.; Valotto, G.

    2015-08-01

    Yttrium silicate and oxonitridosilicate ceramic powders have been successfully prepared by heat treatment, at 1300-1400 °C, of a silicone resin embedding Y2O3 nano-sized particles as reactive fillers. Nano-sized RE-oxides (Eu2O3, CeO2), used as secondary additives, promoted the development of apatite phase, in both air and N2 atmosphere. For treatments in nitrogen, the only crystal phase consisted of yttrium nitrogen apatite, mixed with amorphous silicon oxycarbide (SiOC). Eu-doped and Ce-doped yttrium silicates were characterized by means of UV-visible luminescence and ion beam induced luminescence (IBIL). Strong luminescence features were observed, depending on the conditions of thermal treatment.

  15. Production and quality control of radioactive yttrium microspheres for medical applications.

    PubMed

    Ghahramani, M R; Garibov, A A; Agayev, T N

    2014-02-01

    In this paper, a method for production of yttrium silicate microspheres is reported. Yttrium silicate microspheres with approximate sizes of 20-50µm were obtained when an aqueous solution of Y(NO3)3 was added to tetraethyl orthosilicate (TEOS) and was pumped into silicone oil under constant stirring. The shapes of the particles produced by the proposed method were regular and nearly spherical. The spherical shapes, composition and element distribution were investigated by scanning electron microscopy (SEM), carbon/sulfur analysis and SEM/EDS mapping analysis. Paper chromatography was used to identify radiochemical impurities in the radioactive microspheres. The radionuclide purity was determined using a gamma spectrometry system and an ultra-low-level liquid scintillation spectrometer. The results indicated that the proposed silicone oil spheroidization method is suitable for the production of yttrium silicate microspheres. PMID:24389532

  16. Fractionation of yttrium and holmium during basaltic soil weathering

    NASA Astrophysics Data System (ADS)

    Thompson, Aaron; Amistadi, Mary Kay; Chadwick, Oliver A.; Chorover, Jon

    2013-10-01

    The anomalously low affinity of yttrium (Y) for iron (Fe) (oxyhydr)oxides relative to lanthanides with similar ionic radius (e.g., Ho) has been demonstrated in experiments with isolated Fe minerals and in a variety of marine systems that contain high concentrations of solid phase Fe. However, it has not previously been demonstrated to occur during soil genesis, despite the common observation that many soils become enriched in Fe over time. We hypothesized that Y would become progressively depleted in soils relative to Ho with increased weathering. Since, trivalent Y has an anomalously low Misono softness relative to other trivalent ions included in the rare earth element and yttrium group (REY3+), we also investigated whether soil REY fractionation reflects variation in Misono softness. To test this, we measured trends in total REY concentrations for Hawaiian soils derived from basaltic parent materials aged 0.3-4100 ky, and measured REYs released from the same samples during short-time (3 h) dissolution experiments conducted as part of a previous investigation linking dissolution with surface charge properties (Chorover et al., 2004). The chondrite-normalized Y/Ho ratios in the parent Hawaiian basalt (Chond[Y/Ho] = 0.998) and continental dust (Chond[Y/Ho] = 0.994) inputs are remarkably similar, and thus we can interpret deviations from Chond[Y/Ho] ˜ 1.0 to result from soil biogeochemical processes and not source mixing. Between 0.3 and 20 ky, the Chond[Y/Ho] ratio of the subsurface soils decreased from 0.96 ± 0.07(2?) to 0.71 ± 0.05, and then remained unchanged across the rest of the weathering sequence. In contrast, the Chond[Y/Ho] ratio of the surface soils decreased from 0.99 ± 0.07 to 0.76 ± 0.05 at 150 ky and then, most likely due to continued dust inputs, increased to 1.04 ± 0.07 in the oldest soils. Analysis of the short-time dissolution experiments revealed preferential release of Y relative to Ho (and also La relative Pr) at intermediate pH where aqueous REY concentrations are governed by proton competition for adsorption sites. Proton-competition-control over REY release is bounded at high pH by the onset of colloidal dispersion—represented by the point of minimum dissolution (p.m.d.) of Al—and at low pH by the soil's point of zero net charge (p.z.n.c.) and/or when proton-promoted dissolution of REY-containing solids, including Fe-(oxyhydr)oxides, control REY release. Results of our dissolution experiments suggest that complexation of REYs by dissolved organic matter (DOM) does not drive Y-Ho fractionation during pedogenesis, but rather may suppress it. Synthesis of these field and laboratory experiments suggests the Y/Ho ratio decreases early in soil development (<20 ky) when weathering rates are high and competitive proton adsorption affects REY fractionation. Given that Fe-(oxyhydr)oxide sorbents exhibit greater affinity for Ho relative to Y, their prevalent neo-formation during incipient pedogenesis likely plays a central role in Y-Ho fractionation in these soils. Persistence of low Chond[Y/Ho] ratios in the subsurface soils even at 4100 ky suggests Y-Ho fractionation continues, albeit at a slower rate, as weathering proceeds.

  17. 0145-6008/88/1201-01 19%2.00/0 ALCOHOLISM:CLINICAL AND EXPERIMENTALRFSEARCH

    E-print Network

    Biederman, Irving

    0145-6008/88/1201-01 19%2.00/0 ALCOHOLISM:CLINICAL AND EXPERIMENTALRFSEARCH Vol. 12,No. 1 January/February 1988 Motor Performance in Detoxified Alcoholics James L. York, PhD and Irving was increasedmoreinalcoholics as target separation decreased. Female alcoholics displayed im- pairment in speed of movement

  18. Spectroscopic constants and potential energy curves of yttrium carbide (YC).

    PubMed

    Suo, Bingbing; Balasubramanian, Krishnan

    2007-06-14

    The potential energy curves of the low-lying electronic states of yttrium carbide (YC) and its cation are calculated at the complete active space self-consistent field and the multireference single and double excitation configuration interaction (MRSDCI) levels of theory. Fifteen low-lying electronic states of YC with different spin and spatial symmetries were identified. The X (4)Sigma- state prevails as the ground state of YC, and a low-lying excited A (4)Pi state is found to be 1661 cm(-1) higher at the MRSDCI level. The computations of the authors support the assignment of the observed spectra to a B (4)Delta(Omega=72)<--A (4)Pi(Omega=52) transition with a reinterpretation that the A (4)Pi state is appreciably populated under the experimental conditions as it is less than 2000 cm(-1) of the X (4)Sigma- ground state, and the previously suggested (4)Pi ground state is reassigned to the first low-lying excited state of YC. The potential energy curves of YC+ confirm a previous prediction by Seivers et al. [J. Chem. Phys. 105, 6322 (1996)] that the ground state of YC+ is formed through a second pathway at higher energies. The calculated ionization energy of YC is 6.00 eV, while the adiabatic electron affinity is 0.95 eV at the MRSDCI level. The computed ionization energy of YC and dissociation energy of YC+ confirm the revised experimental estimates provided by Seivers et al. although direct experimental measurements yielded results with greater errors due to uncertainty in collisional cross sections for YC+ formation. PMID:17581052

  19. Spectroscopic constants and potential energy curves of yttrium carbide (YC)

    NASA Astrophysics Data System (ADS)

    Suo, Bingbing; Balasubramanian, Krishnan

    2007-06-01

    The potential energy curves of the low-lying electronic states of yttrium carbide (YC) and its cation are calculated at the complete active space self-consistent field and the multireference single and double excitation configuration interaction (MRSDCI) levels of theory. Fifteen low-lying electronic states of YC with different spin and spatial symmetries were identified. The X?-4 state prevails as the ground state of YC, and a low-lying excited A?4 state is found to be 1661cm-1 higher at the MRSDCI level. The computations of the authors support the assignment of the observed spectra to a B?4(? =7/2)?A?4(?=5/2) transition with a reinterpretation that the A?4 state is appreciably populated under the experimental conditions as it is less than 2000cm-1 of the X?-4 ground state, and the previously suggested ?4 ground state is reassigned to the first low-lying excited state of YC. The potential energy curves of YC + confirm a previous prediction by Seivers et al. [J. Chem. Phys. 105, 6322 (1996)] that the ground state of YC+ is formed through a second pathway at higher energies. The calculated ionization energy of YC is 6.00eV, while the adiabatic electron affinity is 0.95eV at the MRSDCI level. The computed ionization energy of YC and dissociation energy of YC+ confirm the revised experimental estimates provided by Seivers et al. although direct experimental measurements yielded results with greater errors due to uncertainty in collisional cross sections for YC+ formation.

  20. Hanford isotope project strategic business analysis yttrium-90 (Y-90)

    SciTech Connect

    1995-10-01

    The purpose of this analysis is to address the short-term direction for the Hanford yttrium-90 (Y-90) project. Hanford is the sole DOE producer of Y-90, and is the largest repository for its source in this country. The production of Y-90 is part of the DOE Isotope Production and Distribution (IP and D) mission. The Y-90 is ``milked`` from strontium-90 (Sr-90), a byproduct of the previous Hanford missions. The use of Sr-90 to produce Y-90 could help reduce the amount of waste material processed and the related costs incurred by the clean-up mission, while providing medical and economic benefits. The cost of producing Y-90 is being subsidized by DOE-IP and D due to its use for research, and resultant low production level. It is possible that the sales of Y-90 could produce full cost recovery within two to three years, at two curies per week. Preliminary projections place the demand at between 20,000 and 50,000 curies per year within the next ten years, assuming FDA approval of one or more of the current therapies now in clinical trials. This level of production would incentivize private firms to commercialize the operation, and allow the government to recover some of its sunk costs. There are a number of potential barriers to the success of the Y-90 project, outside the control of the Hanford Site. The key issues include: efficacy, Food and Drug Administration (FDA) approval and medical community acceptance. There are at least three other sources for Y-90 available to the US users, but they appear to have limited resources to produce the isotope. Several companies have communicated interest in entering into agreements with Hanford for the processing and distribution of Y-90, including some of the major pharmaceutical firms in this country.

  1. Anisotropic Optical-Response of Eu-doped Yttrium Orthosilicate

    NASA Technical Reports Server (NTRS)

    Liu, Huimin; Santiago, Miguel; Jia, Weiyi; Zhang, Shoudu

    1998-01-01

    Eu-doped yttrium orthosilicate (Eu(3+) : Y2SiO5) had been a subject being investigated for coherent time-domain optical memory and information processing applications since its ultraslow optical dephasing was discovered several years ago. In this crystal the weakly allowed (7)F0 - (5)D0 transition of europium ions exhibits a sufficient long dephasing time and no spectral difli.usion on a time scale of several hours at low temperature, thus an information pattern or data can be stored as a population grating in the ground state hyperfine levels. On the other hand, the study on photon-echo relaxation shows that the dephasing time T2 of Eu (3+) and other rare-earth ions doped YAG, YAlO3 strongly depends on the intensity of the excitation pulses. In Eu (3+) :YAlO3, an exponential decay of photon-echo with T2 = 53 microseconds if the excitation pulses are weak (5 vJ/pulse) was observed. However, when the excitation pulses are strong (80 pJ/pulse) they observed a much shortened T2 with a highly nonexponential decay pattern. The conclusion they derived is that the intensity-dependent dephasing rate effects are quite general, and it depends on how much the excitation intensity varies. In this paper we use transient grating formation technique showing that a temporal lattice distortion may only occur along crystal c axis, caused by EU (3+) excitation. At high excitation level the produced exciton in conduction band may also couple to the dynamical lattice relaxation process, giving rise to an apparently much shortened dephasing time.

  2. Root Cause Analysis of Gastroduodenal Ulceration After Yttrium-90 Radioembolization

    SciTech Connect

    Lam, Marnix G. E. H.; Banerjee, Subhas; Louie, John D.; Abdelmaksoud, Mohamed H. K.; Iagaru, Andrei H.; Ennen, Rebecca E.; Sze, Daniel Y.

    2013-12-15

    IntroductionA root cause analysis was performed on the occurrence of gastroduodenal ulceration after hepatic radioembolization (RE). We aimed to identify the risk factors in the treated population and to determine the specific mechanism of nontarget RE in individual cases. Methods: The records of 247 consecutive patients treated with yttrium-90 RE for primary (n = 90) or metastatic (n = 157) liver cancer using either resin (n = 181) or glass (n = 66) microspheres were reviewed. All patients who developed a biopsy-proven microsphere-induced gastroduodenal ulcer were identified. Univariate and multivariate analyses were performed on baseline parameters and procedural data to determine possible risk factors in the total population. Individual cases were analyzed to ascertain the specific cause, including identification of the culprit vessel(s) leading to extrahepatic deposition of the microspheres. Results: Eight patients (3.2 %) developed a gastroduodenal ulcer. Stasis during injection was the strongest independent risk factor (p = 0.004), followed by distal origin of the gastroduodenal artery (p = 0.004), young age (p = 0.040), and proximal injection of the microspheres (p = 0.043). Prolonged administrations, pain during administration, whole liver treatment, and use of resin microspheres also showed interrelated trends in multivariate analysis. Retrospective review of intraprocedural and postprocedural imaging showed a probable or possible culprit vessel, each a tiny complex collateral vessel, in seven patients. Conclusion: Proximal administrations and those resulting in stasis of flow presented increased risk for gastroduodenal ulceration. Patients who had undergone bevacizumab therapy were at high risk for developing stasis.

  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 (?3 -OH)20 Cl}(24+) (Ln=Y, Dy), which consists of five vertex-sharing heterocubane {Ln4 (?3 -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 (?3 -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 ?T 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. Yttrium-90 radioembolization for advanced inoperable hepatocellular carcinoma

    PubMed Central

    Lee, Victor Ho-Fun; Leung, Dennis KC; Luk, Mai-Yee; Tong, Chi-Chung; Law, Martin WM; Ng, Sherry CY; Wong, Ka-Kin; Poon, Ronnie TP; Kwong, Dora LW; Leung, To-Wai

    2015-01-01

    Background Advanced inoperable hepatocellular carcinoma (HCC) conferring a grave prognosis may benefit from yttrium-90 (90Y) radioembolization. Methods Thirty patients with advanced inoperable HCC including those with any lesion >8 cm in maximal diameter or multiple bi-lobar lesions (totally more than five lesions), or portal vein thrombosis treated with radioembolization were reviewed. Treatment efficacy and safety were evaluated. Univariate and multivariate analyses were performed for identifying potential prognostic factors. Results After a median follow-up of 18.3 months, the response rate was 30.0%, and the disease control rate was 50.0%. Median overall progression-free survival (PFS) and overall survival (OS) were 3.3 months and 13.2 months, respectively. Longer median PFS was noted in those who had transarterial chemoembolization before radioembolization (7.3 months vs 3.1 months; P=0.021) and duration of alfafeto protein (AFP) response ?6 months (11.8 months vs 3.0 months; P<0.001). Longer median OS was also revealed in those without portal vein thrombosis (17.1 months vs 4.4 months; P=0.015) and those whose duration of AFP response was ?6 months (21.2 months vs 8.6 months; P=0.001). Seventeen patients (56.7%) developed treatment-related complications including five (16.7%) grade 3 events. Multivariate analysis revealed that treatment responders (P=0.001) and duration of AFP response ?6 months (P=0.006) were prognostic of PFS, whereas the absence of portal vein invasion (P=0.025), treatment responders (P=0.010), and duration of AFP response ?6 months (P=0.001) were prognostic of OS. Conclusion 90Y radioembolization is an alternative treatment with a promising outcome for poor-risk advanced inoperable HCC. PMID:26640386

  5. Selective encapsulation of the carbides of yttrium and titanium into carbon nanoclusters

    NASA Astrophysics Data System (ADS)

    Seraphin, Supapan; Zhou, Dan; Jiao, Jun; Withers, James C.; Loutfy, Raouf

    1993-10-01

    Characterization of the arc-discharge deposits at the cathode from anodes containing yttrium oxide and titanium by transmission electron microscopy and x-ray diffraction shows different results with respect to an encapsulation of the metal carbides into carbon clusters. Yttrium carbide is encapsulated into carbon nanoclusters in a crystalline phase. The formation of titanium carbide, on the other hand, preempts the formation of the carbon—carbon bonds necessary to form the carbon cages, so that only titanium carbide clusters are observed. Thermodynamic data support the interpretation of the results.

  6. Selective encapsulation of the carbides of yttrium and titanium into carbon nanoclusters

    SciTech Connect

    Seraphin, S.; Zhou, D. ); Jiao, J. ); Withers, J.C.; Loutfy, R. )

    1993-10-11

    Characterization of the arc-discharge deposits at the cathode from anodes containing yttrium oxide and titanium by transmission electron microscopy and x-ray diffraction shows different results with respect to an encapsulation of the metal carbides into carbon clusters. Yttrium carbide is encapsulated into carbon nanoclusters in a crystalline phase. The formation of titanium carbide, on the other hand, preempts the formation of the carbon---carbon bonds necessary to form the carbon cages, so that only titanium carbide clusters are observed. Thermodynamic data support the interpretation of the results.

  7. The nature of photoinduced changes in the magnetostriction of yttrium-iron garnet single crystals

    SciTech Connect

    Vorob'eva, N. V.

    2011-05-15

    A model of the occurrence of photoinduced changes in linear magnetostriction is proposed based on a complex experimental study of magnetostrictive strains in yttrium-iron garnets Y{sub 3}Fe{sub 5}O{sub 12} with low contents of different impurities. Analytical expressions for calculating the magnetostriction in yttrium-iron garnet single crystals with different types of doping are presented. The correlation of the photoinduced change in the magnetostriction with the crystallographic features of the samples is demonstrated. The changes in the magnetostriction constants are analyzed quantitatively for samples prepared in different ways.

  8. Study of lattice dynamics in yttrium doped NdMnO{sub 3} using Raman spectroscopy

    SciTech Connect

    Yadav, Ruchika Elizabeth, Suja; Nair, Harikrishnan S.

    2014-04-24

    A systematic study of Raman spectra on Yttrium doped NdMnO{sub 3} polycrystalline samples was undertaken to understand the lattice dynamics in this compound. Raman active phonons were analyzed and the observed peak were assigned to elucidate various phonon modes in the range (200 - 800) cm{sup ?1}. It was observed that at 325 cm{sup ?1} phonon frequency shifts upward as much as upto 4 % with increase in Yttrium content. Lattice distortions manifest themselves by frequency shifts in both bending and tilt modes of MnO{sub 6} octahedra, resulting in increase of Raman band line-widths.

  9. Optical bistability in erbium-doped yttrium aluminum garnet crystal combined with a laser diode.

    PubMed

    Maeda, Y

    1994-01-10

    Optical bistability was observed in a simple structure of an injection laser diode combined with an erbium-doped yttrium aluminum garnet crystal. Since a hysteresis characteristic exists in the relationship between the wavelength and the injection current of a laser diode, an optical memory function capable of holding the output status is confirmed. In addition, an optical signal inversion was caused by the decrease of transmission of the erbium-doped yttrium aluminum garnet crystal against the red shift (principally mode hopping) of the laser diode. It is suggested that the switching time of this phenomenon is the time necessary for a mode hopping by current injection. PMID:20862016

  10. 29 CFR 1915.88 - Sanitation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) OCCUPATIONAL SAFETY AND HEALTH STANDARDS FOR SHIPYARD EMPLOYMENT General Working Conditions § 1915.88...) Potable water. (1) The employer shall provide potable water for all employee health and personal needs...

  11. 42 CFR 88.1 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ..., according to the International Classification of Diseases, 10th Edition (ICD-10) and International Classification of Diseases, 9th Edition (ICD-9). § 88.1, Nt. ER12OC12.000 ER12OC12.001 ER12OC12.002...

  12. 36 CFR 223.88 - Bidding methods.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER Timber Sale Contracts Advertisement and Bids § 223.88 Bidding methods. (a) Competitive sales of National Forest timber shall be offered through either sealed or oral...) Consider the economic stability of communities whose economies are dependent upon National Forest...

  13. 32 CFR 552.88 - Responsibilities.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... CEMETERIES REGULATIONS AFFECTING MILITARY RESERVATIONS Fort Lewis Land Use Policy § 552.88 Responsibilities... of Ft. Lewis Land Use Policy and area access procedures, and provide periodic updates through media. Act as interface, when necessary, to resolve community relations issues related to land...

  14. 32 CFR 552.88 - Responsibilities.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... CEMETERIES REGULATIONS AFFECTING MILITARY RESERVATIONS Fort Lewis Land Use Policy § 552.88 Responsibilities... of Ft. Lewis Land Use Policy and area access procedures, and provide periodic updates through media. Act as interface, when necessary, to resolve community relations issues related to land...

  15. 32 CFR 552.88 - Responsibilities.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... CEMETERIES REGULATIONS AFFECTING MILITARY RESERVATIONS Fort Lewis Land Use Policy § 552.88 Responsibilities... of Ft. Lewis Land Use Policy and area access procedures, and provide periodic updates through media. Act as interface, when necessary, to resolve community relations issues related to land...

  16. 32 CFR 552.88 - Responsibilities.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... CEMETERIES REGULATIONS AFFECTING MILITARY RESERVATIONS Fort Lewis Land Use Policy § 552.88 Responsibilities... of Ft. Lewis Land Use Policy and area access procedures, and provide periodic updates through media. Act as interface, when necessary, to resolve community relations issues related to land...

  17. 32 CFR 552.88 - Responsibilities.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... CEMETERIES REGULATIONS AFFECTING MILITARY RESERVATIONS Fort Lewis Land Use Policy § 552.88 Responsibilities... of Ft. Lewis Land Use Policy and area access procedures, and provide periodic updates through media. Act as interface, when necessary, to resolve community relations issues related to land...

  18. MyD88 Signaling Is Directly Involved in the Development of Murine Placental Malaria

    PubMed Central

    Barboza, Renato; Reis, Aramys Silva; da Silva, Leandro Gustavo; Hasenkamp, Lutero; Pereira, Keitty Raquel Benevides; Câmara, Niels Olsen Saraiva; Costa, Fabio Trindade Maranhão; Lima, Maria Regina D'Império; Alvarez, José Maria; Boscardin, Silvia Beatriz; Epiphanio, Sabrina

    2014-01-01

    Malaria is a widespread infectious disease caused by the parasite Plasmodium. During pregnancy, malaria infection leads to a range of complications that can affect both the mother and fetus, including stillbirth, infant mortality, and low birth weight. In this study, we utilized a mouse model of placental malaria (PM) infection to determine the importance of the protein MyD88 in the host immune response to Plasmodium during pregnancy. Initially, we demonstrated that Plasmodium berghei NK65GFP adhered to placental tissue via chondroitin sulfate A and induced PM in mice with a C57BL/6 genetic background. To evaluate the involvement of MyD88 in the pathology of PM, we performed a histopathological analysis of placentas obtained from MyD88?/? and wild-type (WT) mice following infection on the 19th gestational day. Our data demonstrated that the detrimental placental alterations observed in the infected mice were correlated with the expression of MyD88. Moreover, in the absence of this protein, production of interleukin 6 (IL-6) and tumor necrosis factor alpha (TNF-?) was significantly reduced in the infected mice. More importantly, in contrast to fetuses from infected WT mice, which exhibited a reduction in body weight, the fetuses from infected MyD88?/? mice did not display significant weight loss compared to their noninfected littermates. In addition, we observed a decrement of maternal care associated with malaria infection, which was attenuated in the MyD88-deficient mice. Collectively, the results of this study illustrate the pivotal importance of the MyD88 signaling pathway in the pathogenesis of placental malaria, thus presenting new possibilities for targeting MyD88 in therapeutic interventions. PMID:24478096

  19. MyD88 signaling is directly involved in the development of murine placental malaria.

    PubMed

    Barboza, Renato; Reis, Aramys Silva; da Silva, Leandro Gustavo; Hasenkamp, Lutero; Pereira, Keitty Raquel Benevides; Câmara, Niels Olsen Saraiva; Costa, Fabio Trindade Maranhão; Lima, Maria Regina D'Império; Alvarez, José Maria; Boscardin, Silvia Beatriz; Epiphanio, Sabrina; Marinho, Cláudio Romero Farias

    2014-02-01

    Malaria is a widespread infectious disease caused by the parasite Plasmodium. During pregnancy, malaria infection leads to a range of complications that can affect both the mother and fetus, including stillbirth, infant mortality, and low birth weight. In this study, we utilized a mouse model of placental malaria (PM) infection to determine the importance of the protein MyD88 in the host immune response to Plasmodium during pregnancy. Initially, we demonstrated that Plasmodium berghei NK65GFP adhered to placental tissue via chondroitin sulfate A and induced PM in mice with a C57BL/6 genetic background. To evaluate the involvement of MyD88 in the pathology of PM, we performed a histopathological analysis of placentas obtained from MyD88(-/-) and wild-type (WT) mice following infection on the 19th gestational day. Our data demonstrated that the detrimental placental alterations observed in the infected mice were correlated with the expression of MyD88. Moreover, in the absence of this protein, production of interleukin 6 (IL-6) and tumor necrosis factor alpha (TNF-?) was significantly reduced in the infected mice. More importantly, in contrast to fetuses from infected WT mice, which exhibited a reduction in body weight, the fetuses from infected MyD88(-/-) mice did not display significant weight loss compared to their noninfected littermates. In addition, we observed a decrement of maternal care associated with malaria infection, which was attenuated in the MyD88-deficient mice. Collectively, the results of this study illustrate the pivotal importance of the MyD88 signaling pathway in the pathogenesis of placental malaria, thus presenting new possibilities for targeting MyD88 in therapeutic interventions. PMID:24478096

  20. Excited state dynamics of thulium ions in yttrium aluminum garnets

    NASA Technical Reports Server (NTRS)

    Armagan, G.; Buoncristiani, A. M.; Dibartolo, B.

    1991-01-01

    The processes that take place in the excited states of a trivalent Thulium (Tm) ion in an Yttrium Aluminum Garnet (YAG) crystal, being relevant to the use of this system for laser applications, have been the object of several studies. We have reexamined this system focusing our attention on the dynamics of Tm following its excitation in the H-3(sub 4) level. Under these conditions the system relaxes through a cross-relaxation process. H-3(sub 4) yields F-3(sub 4), H-3(sub 6) yields F-3(sub 4), whose rate depends upon both the concentration of the Tm ion and the temperature of the crystal. The excitation spectrum obtained by monitoring the 1.8 micron emission of Tm (due to the F-3(sub 4) yields H-3(sub 6) transition) indicates an increase in the contribution to this emission from the H-3(sub 4) level relative to the H-3(sub 5) level as the Tm concentration increases; this shows the increased role played by the H-3(sub 4) level in pumping the infrared emission. Correspondingly, the duration of the luminescence originating in the H-3(sub 4) level is shortened as the concentration of Tm increases. The concentration quenching of this lifetime can be fit to a model which assumes that the cross-relaxation is due to a dipole-dipole interaction; from this fit, the intrinsic Tm lifetime in the absence of cross relaxation can be derived. We have used this lifetime to calculate the rate of the cross-relaxation process. We have evaluated this rate as a function of the temperature and found it to be fastest at 77 K. We have also calculated the microscopic interaction parameters for the cross-relaxation process by using two independent experimental features: (1) the time evolution of the emission from the H-3(sub 4) level; and (2) the spectral overlap between the H-3(sub 4) yields F-3(sub 4) emission and the H-3(sub 6) yields F-3(sub 4) absorption. We have also considered the migration of excitation among the Tm ions in the F-3(sub 4) level and calculated the relevant microparameter by the use of the relevant spectral overlap. The data are consistent with the model in which the Tm ions, once excited into the H-3(sub 4) level decay by cross-relaxation to the F-3(sub 4), and then transfer rapidly their energy to other Tm ions.

  1. Oscillator strengths for Y I and Y II and the solar abundance of yttrium

    SciTech Connect

    Hannaford, P.; Lowe, R.M.; Grevesse, N.; Biemont, E.; Whaling, W.

    1982-10-15

    Oscillator strengths have been determined from measurements of radiative lifetimes and branching ratios for 154 lines of Y I and 66 lines of Y II. These data are used, together with equivalent widths measured on the Jungfraujoch solar atlas, to perform a new determination of the solar abundance of yttrium: A/sub Y/ = 2.24 +- 0.03.

  2. Temperature evolution of electromotive force from Pt on yttrium-iron-garnet under ferromagnetic resonance

    SciTech Connect

    Ohshima, Ryo; Emoto, Hiroyuki; Shinjo, Teruya; Ando, Yuichiro; Shiraishi, Masashi

    2015-05-07

    Temperature evolution of electromotive force from Pt due to the inverse spin Hall effect is studied. Pure spin current is injected from yttrium-iron-garnet by using spin pumping technique. The electromotive force from the Pt monotonically decreases with decreasing temperature, and it is showed that there is a deviation between the measured and the calculated electromotive forces.

  3. Influence of bismuth substitution on yttrium orthoferrite thin films preparation by the MOD method

    NASA Astrophysics Data System (ADS)

    Galstyan, Ogsen; Lee, Hanju; Park, Jongwon; Lee, Jung-Ha; Babajanyan, Arsen; Friedman, Barry; Lee, Kiejin

    2016-01-01

    Yttrium orthoferrite thin films with a thickness of about 0.4 ?m were prepared on glass substrates by using a metal-organic decomposition method. Our studies reveal that it is possible to reduce the crystallization temperature of the yttrium orthoferrite by the substitution of the yttrium ion with bismuth. For the samples BixY1-xFeO3 with x=0.3 and x=0.4, orthorhombic yttrium orthoferrite characteristic peaks in the X-ray diffraction spectra have been detected. The lattice constants of the Bi0.3Y0.7FeO3 film were a=5.905 Å, b=7.66 Å, c=5.256 Å with an average grain size of about 40 nm. The magnetization data indicate that the film has in-plane easy axis and weak coercivity which might be explained by a possible secondary garnet phase crystallization. Faraday rotation angle of the sample was measured to be about 0.3°/?m.

  4. Enhanced Sintering of Yttrium-Doped Barium Zirconate by Addition of ZnO

    E-print Network

    Haile, Sossina M.

    Enhanced Sintering of Yttrium-Doped Barium Zirconate by Addition of ZnO Peter Babilo and Sossina M properties of doped barium zirconate have been examined. With the use of zinc ox- ide as a sintering aid, Ba of the material under flowing CO2 showed ZnO-modified barium zirconate to exhibit excellent chemical stability

  5. The lanthanides and yttrium in minerals of the apatite group; a review

    USGS Publications Warehouse

    Fleischer, Michael; Altschuler, Z.S.

    1982-01-01

    More than 1000 analyses have been tabulated of the distribution of the lanthanides and yttrium in minerals of the apatite group, recalculated to atomic percentages. Average compositions have been calculated for apatites from 14 types of rocks. These show a progressive change of composition from apatites of granitic pegmatites, highest in the heavy lanthanides and yttrium, to those from alkalic pegmatites, highest in the light lanthanides and lowest in yttrium. This progression is clearly shown in plots of S (= at % La+Ce+Pr) vs the ratio La/Nd and of S vs the ratio 100Y/(Y+Ln), where Ln is the sum of the lanthanides. Apatites of sedimentary phosphorites occupy a special position, being relatively depleted in Ce and relatively enriched in yttrium and the heavy lanthanides, consequences of deposition from sea water. Apatites associated with iron ores are close in composition to apatites of carbonatites, alkalic ultramafic, and ultramafic rocks, being enriched in the light lanthanides and depleted in the heavy lanthanides. Their compositions do not support the hypothesis of Parak that the Kiruna-type ores are of sedimentary origin. Table 9 and Figures 1-3 show the dependence of lanthanide distribution on the nature of the host rock. Although a given analysis of the lanthanides does not unequivocally permit certain identification of the host rock, it can indicate a choice of highly probable host rocks.

  6. The effect of yttrium and thorium on the oxidation behavior of Ni-Cr-Al alloys

    NASA Technical Reports Server (NTRS)

    Kumar, A.; Nasrallah, M.; Douglass, D. L.

    1974-01-01

    The effect of quaternary additions of 0.5% Y, 0.5 and 1.0% Th to a base alloy of Ni-10CR-5Al on the oxidation behavior and mechanism was studied during oxidation in air over the range of 1000 to 1200 C. The presence of yttrium decreased the oxidation kinetics slightly, whereas, the addition of thorium caused a slight increase. Oxide scale adherence was markedly improved by the addition of the quaternary elements. Although a number of oxides formed on yttrium containing alloys, quantitative X-ray diffraction clearly showed that the rate-controlling step was the diffusion of aluminum through short circuit paths in a thin layer of alumina that formed parabolically with time. Although the scale adherence of the yttrium containing alloy was considerably better than the base alloys, spalling did occur that was attributed to the formation of the voluminous YAG particles which grew in a mushroom-like manner, lifting the protective scale off the subrate locally. The YAG particles formed primarily at grain boundaries in the substrate in which the yttrium originally existed as YNi9.

  7. The structure of rare earth thin films: holmium and gadolinium on yttrium

    NASA Astrophysics Data System (ADS)

    Bentall, M. J.; Cowley, R. A.; Ward, R. C. C.; Wells, M. R.; Stunault, A.

    2003-11-01

    Single-crystal holmium and gadolinium layers have been grown on yttrium substrates using the molecular beam epitaxy technique and their structures investigated using high resolution x-ray scattering. The experiments were performed using a Philips MRD diffractometer in Oxford, and with the XMaS facility at the ESRF. Holmium layers with a thickness below T_{\\mathrm {c}}'=115\

  8. Preliminary results on a new method for producing yttrium phosphorous microspheres.

    PubMed

    Ghahramani, M R; Garibov, A A; Agayev, T N

    2014-09-01

    This paper reports on a new method to embed phosphorus particles into the matrix of yttrium aluminum silicate microspheres. Yttrium phosphorus glass microspheres about 20µm in size were obtained when an aqueous solution of YCl3 and AlCl3 were added to tetraethyl orthosilicate (TEOS) (phosphoric acid was used to catalyze the hydrolysis and condensation of TEOS) and was pumped into silicone oil under constant stirring. The shapes of the particles produced by this method are regular and nearly spheric in shape. Paper chromatography was used to determine the radiochemical impurity of radioactive microspheres. Radionuclide purity was determined using a gamma spectrometry system and an ultra-low level liquid scintillation spectrometer. The P(+) ions implantation stage was eliminated by embedding phosphorus particles in the matrix of the glass microspheres. This paper shows that a high temperature is not required to produce yttrium phosphorus aluminum silicate microspheres. The result shows that the silicone oil spheroidization method is a very suitable way to produce yttrium phosphorus glass microspheres. The topographical analysis of microspheres shows that the Y, P, Si, and Al elements are distributed in the microspheres and the distribution of elements in the samples is homogenous. PMID:24998745

  9. Superconductivity at 20 K in yttrium metal at pressures exceeding 1 Mbar

    E-print Network

    Schilling, James

    Abstract In experiments in a diamond anvil cell, yttrium metal is found to display a superconducting pressure range 33­115 GPa. The diamond anvil cell used contains two opposing 1/6- carat, type Ia diamond diameter hole electro-spark drilled through the cen- ter of a gold-sputtered rhenium gasket 3 mm diameter

  10. Scandium and yttrium phosphasalen complexes as initiators for ring-opening polymerization of cyclic esters.

    PubMed

    Bakewell, Clare; White, Andrew J P; Long, Nicholas J; Williams, Charlotte K

    2015-03-01

    The synthesis and characterization of novel scandium and yttrium phosphasalen complexes is reported, where phosphasalen refers to two different bis(iminophosphorane) derivatives of the more ubiquitous salen ligands. The activity of the complexes as initiators for the ring-opening polymerization of cyclic esters is presented. The scandium complexes are inactive for lactide polymerization but slow and controlled initiators for ?-caprolactone polymerization. The lack of activity toward lactide exhibited by these compounds is probed, and a rare example of single-monomer insertion product, unable to undergo further reactions with lactide, is identified. In contrast, the analogous yttrium phosphasalen complex is a very active initiator for the ring-opening polymerization of rac-lactide (kobs = 1.5 × 10(-3) s(-1) at 1:500 [yttrium initiator]:[rac-lactide], 1 M overall concentration of lactide in THF at 298 K). In addition to being a very fast initiator, the yttrium complex also maintains excellent levels of polymerization control and a high degree of isoselectivity, with the probability of isotactic enchainment being Pi = 0.78 at 298 K. PMID:25691212

  11. Effect of Rare Earth Yttrium on the Hot Ductility of Fe-36Ni Invar Alloy

    NASA Astrophysics Data System (ADS)

    Yu, Y. C.; Liu, H. T.; Chen, W. Q.; Zheng, H. G.

    2014-12-01

    The hot ductility of Fe-36Ni invar alloy doped with and without yttrium was investigated using a Gleeble-3800 thermal-mechanical simulator over the temperature range 850-1050 °C and the improvement mechanism of the hot ductility was analysed with a combination of SEM, EDS and OM. The results showed that Fe-36Ni invar alloy had a poor hot ductility below 1050 °C, which was mainly attributed to the presence of the grain boundary sliding and weak grain boundaries. The addition of 0.048% yttrium had a substantial improvement in the hot ductility of Fe-36Ni invar alloy over the whole testing temperature range especially at 950-1000 °C. At 850-900 °C, the improvement of the hot ductility was mainly associated with the grain boundary strengthening and the restriction of the grain boundary sliding because the addition of yttrium could reduce the segregation of sulfur at grain boundaries and refine the grain structure. At 950-1000 °C, the hot ductility was highly improved, which was owed to the acceleration and occurrence of dynamic recrystallization as a result of the refinement of the grain structure by addition of yttrium.

  12. Raman calibration of the HT-7 yttrium aluminum garnet Thomson scattering for electron density measurements

    SciTech Connect

    Zang Qing; Zhao Junyu; Gao Xiang; Shi Lingwei; Zhang Tao; Xi Xiaoqi; Yang Li; Hu Qingsheng; Sajjad, S.

    2007-11-15

    A multipulse neodym doped yttrium aluminum garnet laser Thomson scattering system calibrated by the anti-Stokes rotational Raman scattering from nitrogen gas had been developed in the HT-7 superconducting Tokmak. By virtue of this system, measured electron density results of the plasma were obtained. The results showed good repeatability and its total uncertainty was estimated to be {+-}18%.

  13. Measurement of excitation functions in alpha-induced reactions on yttrium

    NASA Astrophysics Data System (ADS)

    Shahid, Muhammad; Kim, Kwangsoo; Naik, Haladhara; Zaman, Muhammad; Kim, Guinyun; Yang, Sung-Chul; Song, Tae-Young

    2015-01-01

    The excitation functions of 89g,m,90,91m,92mNb,88,89Zr, and 87g,m,88,90m,91mY from alpha-induced reactions on 89Y were measured from their respective threshold to 45 MeV by using a stacked-foil activation technique at the MC-50 cyclotron of the Korean Institute of Radiological and Medical Sciences. The results were compared with the earlier reported data as well as with the theoretical values obtained from the TENDL-2013 library based on the TALYS1.6 code. Our measurements in the energy region from the threshold energy to 45 MeV are in general good agreement with the other experimental data and calculated results. The integral yields for thick target of the produced radionuclides were also deduced from their measured cross sections and the stopping power of 89Y. The measured excitation functions find importance in various practical applications including nuclear medicine and improvement of nuclear model calculations.

  14. Effects of yttrium, aluminum and chromium concentrations in bond coatings on the performance of zirconia-yttria thermal barriers

    NASA Technical Reports Server (NTRS)

    Stecura, S.

    1980-01-01

    A cyclic furnace study was conducted on thermal barrier systems to evaluate the effects of yttrium, chromium and aluminum in nickel-base alloy bond coatings and the effect of bond coating thickness on yttria-stabilized zirconia thermal barrier coating life. Without yttrium in the bond coatings, the zirconia coatings failed very rapidly. Increasing chromium and aluminum in the Ni-Cr-Al-Y bond coatings increased total coating life. This effect was not as great as that due to yttrium. Increased bond coat thickness was also found to increase life.

  15. Effects of yttrium, aluminum and chromium concentrations in bond coatings on the performance of zirconia-yttria thermal barriers

    NASA Technical Reports Server (NTRS)

    Stecura, S.

    1980-01-01

    A cyclic furnace study was conducted on thermal barrier systems to evaluate the effects of yttrium, chromium, and aluminum in nickel-base alloy bond coatings and the effect of bond coating thickness on yttria-stabilized zirconia thermal barrier coating life. Without yttrium in the bond coatings, the zirconia coatings failed very rapidly. Increasing chromium and aluminum in the Ni-Cr-Al-Y bond coatings increased total coating life. This effect was not as great as that due to yttrium. Increased bond coat thickness was also found to increase life.

  16. Effects of yttrium, aluminum and chromium concentrations in bond coatings on the performance of zirconia-yttria thermal barriers

    NASA Technical Reports Server (NTRS)

    Stecura, S.

    1980-01-01

    A cyclic furnace study was conducted on thermal barrier systems to evaluate the effects of yttrium, chromium and aluminum in nickel-base alloy bond coatings and the influence of the bond coating thickness on yttria-stabilized zirconia thermal barrier coating lifetimes. Without yttrium in the bond coatings, the zirconia coatings failed very rapidly. Increasing concentrations of chromium and aluminum in the Ni-Cr-Al-Y bond coatings increased the total coating lifetimes. This effect was not as great as that due to yttrium. Increased bond coating thickness was also found to increase the lifetimes.

  17. Expression and significance of myeloid differentiation factor 88 in non-small cell lung carcinoma and normal paracancerous tissues.

    PubMed

    Zhu, J; Li, Q; He, J; Ma, K

    2015-01-01

    We studied the expression level of myeloid differentiation factor 88 (MyD88) in non-small cell lung carcinoma (NSCLC) and normal paracancerous tissues, to determine its relationship with clinical pathological characteristics and prognosis. In total, 82 NSCLC patients who had received surgical treatment in our hospital between September 2008 and December 2013 were selected for this study. Another 82 normal paracancerous lung tissue samples were used as controls. All patients had complete clinical records, and they were followed-up for 5 years. The expression level of MyD88 protein was detected by immunohistochemical assay. The positive expression rate of MyD88 in NSCLC tissues (62.2%) was markedly higher than that in normal tissues (10.9%), and was independent of patient characteristics such as age, gender, pathological pattern, history of smoking, and tumor size (P > 0.05). However, MyD88 expression was significantly correlated with degree of differentiation, clinical staging, and lymphatic metastasis (P < 0.05), and was negatively correlated with prognosis. The 5-year survival rate of patients with positive MyD88 expression was significantly lower than that of patients without positive expression (P < 0.05). MyD88 was expressed at a higher level in NSCLC tissues and was closely associated with poor prognosis. MyD88 may be a novel eligible target for treating NSCLC. PMID:26600481

  18. Nuclear Data Sheets for A = 88

    SciTech Connect

    McCutchan, E.A.; Sonzogni, A.A.

    2014-01-15

    The experimental results from the various reaction and radioactive decay studies leading to nuclides in the A=88 mass chain have been reviewed. Nuclides ranging from Ge (Z=32) to Ru (Z=44) are included. For these nuclei, level and decay schemes, as well as tables of nuclear properties, are given. This work supersedes the previous evaluation of the data on these nuclides (G. Mukherjee, A.A. Sonzogni – Nucl.Data Sheets 105, 419 (2005))

  19. STS-88 Mission Commander Robert Cabana arrives at KSC for TCDT

    NASA Technical Reports Server (NTRS)

    1998-01-01

    STS-88 Mission Commander Robert D. Cabana arrives after dark at the Shuttle Landing Facility in a T-38 jet aircraft to take part in Terminal Countdown Demonstration Test (TCDT) activities. The TCDT provides the crew with simulated countdown exercises, emergency egress training, and opportunities to inspect their mission payloads in the orbiter's payload bay. Mission STS-88 is targeted for launch on Dec. 3, 1998. It is the first U.S. flight for the assembly of the International Space Station and will carry the Unity connecting module. Others in the STS-88 crew are Pilot Frederick W. 'Rick' Sturckow, Mission Specialists Nancy J. Currie, Jerry L. Ross, James H. Newman and Russian cosmonaut Sergei Konstantinovich Krikalev. Ross and Newman will make three spacewalks to connect power, data and utility lines and install exterior equipment.

  20. STS-88 Mission Specialist Newman receives M-113 training during TCDT activities

    NASA Technical Reports Server (NTRS)

    1998-01-01

    STS-88 Mission Specialist James H. Newman (right) receives instruction on the operation of an M-113, an armored personnel carrier, as part of emergency egress training from George Hoggard during Terminal Countdown Demonstration Test (TCDT) activities. The TCDT also provides the crew with simulated countdown exercises and opportunities to inspect their mission payloads in the orbiter's payload bay. Mission STS-88 is targeted for launch on Dec. 3, 1998. It is the first U.S. flight for the assembly of the International Space Station and will carry the Unity connecting module. Others in the STS-88 crew are Mission Commander Robert D. Cabana; Pilot Frederick W. 'Rick' Sturckow; and Mission Specialists Nancy J. Currie, Jerry L. Ross, and Sergei Konstantinovich Krikalev, a Russian cosmonaut.

  1. Effects of rare earth yttrium on microstructure and properties of Ni–16Mo–7Cr–4Fe nickel-based superalloy

    SciTech Connect

    Li, X.L.; He, S.M.; Zhou, X.T.; Zou, Y.; Li, Z.J.; Li, A.G.; Yu, X.H.

    2014-09-15

    Effects of rare earth yttrium on microstructure of Ni–16Mo–7Cr–4Fe alloy were examined by optical microscopy, scanning electron microscopy, transmission electron microscopy and X-ray fluorescence. M{sub 6}C phase was observed in the alloys with and without yttrium addition, and Ni{sub 17}Y{sub 2} phase existed in the alloys containing 0.05–0.43 wt.% yttrium simultaneously. The amount of Ni{sub 17}Y{sub 2} phase increased as yttrium concentration increased. When the concentration of yttrium increased to 0.43 wt.%, some multi-precipitated phase regions appeared in the form of large amount of coarse Ni{sub 3}Y phase surrounded by M{sub 6}C phase and ? phase in the alloy. Influences of rare earth yttrium on high temperature static oxidation and mechanical properties of Ni–16Mo–7Cr–4Fe alloy were also investigated. The alloy containing 0.05 wt.% yttrium showed the best oxidation resistance and mechanical properties simultaneously. The adequate concentration of yttrium at grain boundary and in the solid-solution (? phase) and the adhesion enhancement of the outer oxidation scale to the substrate are key factors for the improvements in the mechanical properties and oxidation resistance respectively. - Highlights: • When the content of yttrium reaches to 0.43%, some multiphase regions appear. • When the content of yttrium reaches to 0.43%, some Ni{sub 17}Y{sub 2} chains appear. • The morphology of M{sub 6}C changes with increasing concentration of yttrium. • The Ni–16Mo–7Cr–4Fe alloy with 0.05% yttrium performs the best mechanical property. • The Ni–16Mo–7Cr–4Fe alloy with 0.05% yttrium performs the best oxidation resistance.

  2. Effects of yttrium, aluminum, and chromium concentrations in bond coatings on the performance of zirconia-yttria thermal barriers

    NASA Technical Reports Server (NTRS)

    Stecura, S.

    1979-01-01

    A cyclic furnace study was conducted between 990 - 280 C and 1095 - 280 C to evaluate the effects of yttrium, chromium, and aluminum concentrations in nickel base alloy bond coatings and also the effect of the bond coating thickness on the performance of yttria-stabilized zirconia thermal barrier coatings. The presence and the concentration of yttrium is very critical. Without yttrium, rapid oxidation of Ni-Al, Ni-Cr, and Ni-Cr-Al bond coatings causes zirconia thermal barrier coatings to fail very rapidly. Concentrations of chrominum and aluminum in Ni-Cr-Al-Y bond coating have a very significant effect on the thermal barrier coating life. This effect, however, is not as great as that due to yttrium. Furthermore, the thickness and the thickness uniformity also have a very significant effect on the life of the thermal barrier system.

  3. Verification of d-wave pairing symmetry by microwave intermodulation distortion measurements in yttrium barium copper oxide

    E-print Network

    Park, Sang-Hoon, Ph. D. Massachusetts Institute of Technology

    2004-01-01

    We report measurements of the temperature and power dependence of the microwave frequency intermodulation distortion (IMD) in high quality pulsed laser deposition (PLD) Yttrium Barium Copper Oxide (YBCO) on LaAlO3 substrate. ...

  4. 11 CFR 100.88 - Volunteer activity for candidates.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...2010-01-01 2010-01-01 false Volunteer activity for candidates. 100.88...Exceptions to Contributions § 100.88 Volunteer activity for candidates. ...office and that are used in connection with volunteer activities (such as pins,...

  5. 11 CFR 100.88 - Volunteer activity for candidates.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...2011-01-01 2011-01-01 false Volunteer activity for candidates. 100.88...Exceptions to Contributions § 100.88 Volunteer activity for candidates. ...office and that are used in connection with volunteer activities (such as pins,...

  6. 40 CFR Appendix - Tables to Subpart B of Part 88

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CLEAN-FUEL VEHICLES California Pilot Test Program State opt-in for the California Pilot Test Program. Pt. 88, Subpart B, Tables Tables to Subpart B of Part 88 Table...

  7. 21 CFR 520.88c - Amoxicillin trihydrate oral suspension.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...false Amoxicillin trihydrate oral suspension. 520.88c Section...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS...88c Amoxicillin trihydrate oral suspension. (a)...

  8. 21 CFR 520.88 - Amoxicillin oral dosage forms.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...2013-04-01 false Amoxicillin oral dosage forms. 520.88 ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS § 520.88 Amoxicillin oral dosage...

  9. 21 CFR 520.88 - Amoxicillin oral dosage forms.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 false Amoxicillin oral dosage forms. 520.88 ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS § 520.88 Amoxicillin oral dosage...

  10. 21 CFR 520.88c - Amoxicillin trihydrate oral suspension.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...false Amoxicillin trihydrate oral suspension. 520.88c Section...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS...88c Amoxicillin trihydrate oral suspension. (a)...

  11. 21 CFR 520.88 - Amoxicillin oral dosage forms.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...2012-04-01 false Amoxicillin oral dosage forms. 520.88 ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS § 520.88 Amoxicillin oral dosage...

  12. 21 CFR 520.88 - Amoxicillin oral dosage forms.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 false Amoxicillin oral dosage forms. 520.88 ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS § 520.88 Amoxicillin oral dosage...

  13. 21 CFR 520.88 - Amoxicillin oral dosage forms.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...2014-04-01 false Amoxicillin oral dosage forms. 520.88 ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS § 520.88 Amoxicillin oral dosage...

  14. 21 CFR 520.88c - Amoxicillin trihydrate oral suspension.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...false Amoxicillin trihydrate oral suspension. 520.88c Section...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS...88c Amoxicillin trihydrate oral suspension. (a)...

  15. 33 CFR 88.11 - Law enforcement vessels.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Law enforcement vessels. 88... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...PILOT RULES § 88.11 Law enforcement vessels....

  16. 33 CFR 88.11 - Law enforcement vessels.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Law enforcement vessels. 88... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...PILOT RULES § 88.11 Law enforcement vessels....

  17. 33 CFR 88.11 - Law enforcement vessels.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Law enforcement vessels. 88... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...PILOT RULES § 88.11 Law enforcement vessels....

  18. 33 CFR 88.11 - Law enforcement vessels.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Law enforcement vessels. 88... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...PILOT RULES § 88.11 Law enforcement vessels....

  19. 33 CFR 88.11 - Law enforcement vessels.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Law enforcement vessels. 88... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...PILOT RULES § 88.11 Law enforcement vessels....

  20. 22 CFR 8.8 - Chartering of committees.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...false Chartering of committees. 8.8 Section 8.8 Foreign Relations DEPARTMENT OF STATE...filed with the Advisory Committee Management Officer, the Senate Foreign Relations Committee and the House...

  1. 22 CFR 8.8 - Chartering of committees.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...false Chartering of committees. 8.8 Section 8.8 Foreign Relations DEPARTMENT OF STATE...filed with the Advisory Committee Management Officer, the Senate Foreign Relations Committee and the House...

  2. Preparation of transparent neodymium-doped yttrium aluminate garnet (Nd:YAG) ceramics with the use of freeze granulation

    NASA Astrophysics Data System (ADS)

    Wajler, Anna; W?glarz, Helena; Sidorowicz, Agata; Zych, ?ukasz; Nakielska, Magdalena; Jach, Katarzyna; Tomaszewski, Henryk

    2015-12-01

    This paper presents the results of the application of freeze granulation to the production of transparent neodymium-doped yttrium-aluminum garnet ceramics. Aqueous suspensions of aluminium oxide, yttrium oxide and neodymium oxide powders were prepared based on nanometric or submicronic powders which were either commercially available or prepared by precipitation. The relations between the composition of suspension, the properties of granulate and the final properties of ceramics (microstructure, optical transmission and emission spectra) were studied.

  3. Corrosion Behavior of Mg-6Al-1Zn+XRE Magnesium Alloy with Minor Addition of Yttrium

    NASA Astrophysics Data System (ADS)

    Manivannan, S.; Babu, S. P. Kumaresh; Sundarrajan, Srinivasan

    2015-04-01

    The effect of yttrium addition on the microstructure of Mg-6Al-1Zn alloy was investigated by optical microscopy, x-ray diffraction analysis, and scanning electron microscopy. The experimental alloys were prepared by melting high-purity Mg, Al, Zn, and Y, respectively. Melting was carried out in a Inconel 718 crucible under SF6 and ultra pure Ar (99.999%) gas mixture environment using electric arc furnace. The corrosion behavior of Mg-6Al-1Zn+ xYttrium ( x = 0.5, 1.0 and 1.5 wt.% Y) magnesium alloy with different levels of yttrium additions was studied in 3.5 wt.% NaCl solution. Microstructure of yttrium-added alloy shows that higher grainrefinement is obtained in Mg-6Al-1Zn+0.5wt.%Y. Increasing yttrium content reduces the size of ?-grain and alters the distribution of the ?-phase (Mg17Al12) from continuous network morphology to small and dispersive distribution. It forms secondary intermetallic phase Al2Y which has high melting point along the grain boundary. The corrosion resistance of Mg-6Al-1Zn magnesium alloy improved with addition of Yttrium. It was confirmed by the results of electrochemical polarization test. Based on the polarization curves, it is seen that fine precipitates of Al-Y intermetallic phase in Mg-6Al-1Zn alloy decrease the corrosion current density, thereby improving the corrosion resistance of the Mg-6Al-1Zn magnesium alloy.

  4. Effect of Rare Earth Yttrium on the Hot Ductility of Eco-friendly Bi-S Based Free Cutting Steel

    NASA Astrophysics Data System (ADS)

    Liu, Haitao; Chen, Weiqing; Qi, Fengyou; Li, Wenying

    2014-09-01

    The hot ductility of eco-friendly Bi-S based free cutting steels micro-alloyed with and without yttrium was studied using a Gleeble-1500 thermal-mechanical simulator over the temperature range 850-1200 °C. The results showed that the addition of rare earth yttrium had a substantial improvement in the hot ductility of Bi-S based free-cutting steel, especially at 1000 °C. The beneficial effect of yttrium on the hot ductility of Bi-S based free-cutting steel at the temperature no less than 1000 °C was mainly associated to the refinement of austenite grain size, which could effectively reduce the segregation density of bismuth at the grain boundary, and the lowering of the DRX onset temperature by yttrium addition. At 850-950 °C, the improvement of the hot ductility in these steels by yttrium addition might be attributed to the reduction of the low melting point sulphides at grain boundary and the refinement of the austenite grain size. However, the hot ductility of these steels micro-alloyed with yttrium was still poor at 850-950 °C, which was mainly owning to the presence of pro-eutectoid ferrite films and the absence of dynamic recrystallization as well as the segregation of liquid bismuth films at austenite grain boundaries.

  5. 40 CFR 282.88 - Pennsylvania State-Administered Program.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 26 2010-07-01 2010-07-01 false Pennsylvania State-Administered Program. 282.88 Section 282.88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) APPROVED UNDERGROUND STORAGE TANK PROGRAMS Approved State Programs § 282.88 Pennsylvania State-Administered Program. (a)...

  6. 42 CFR 88.14 - Standard for determining medical necessity.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 1 2013-10-01 2013-10-01 false Standard for determining medical necessity. 88.14 Section 88.14 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.14 Standard...

  7. 42 CFR 88.14 - Standard for determining medical necessity.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 1 2014-10-01 2014-10-01 false Standard for determining medical necessity. 88.14 Section 88.14 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.14 Standard...

  8. 42 CFR 88.14 - Standard for determining medical necessity.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 1 2011-10-01 2011-10-01 false Standard for determining medical necessity. 88.14 Section 88.14 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.14 Standard...

  9. 42 CFR 88.14 - Standard for determining medical necessity.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 1 2012-10-01 2012-10-01 false Standard for determining medical necessity. 88.14 Section 88.14 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.14 Standard...

  10. 42 CFR 88.3 - Eligibility-currently identified responders.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 1 2014-10-01 2014-10-01 false Eligibility-currently identified responders. 88.3 Section 88.3 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.3...

  11. 42 CFR 88.3 - Eligibility-currently identified responders.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 1 2013-10-01 2013-10-01 false Eligibility-currently identified responders. 88.3 Section 88.3 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.3...

  12. 42 CFR 88.3 - Eligibility-currently identified responders.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 1 2011-10-01 2011-10-01 false Eligibility-currently identified responders. 88.3 Section 88.3 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.3...

  13. 7 CFR 989.88 - Duration of immunities.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 8 2012-01-01 2012-01-01 false Duration of immunities. 989.88 Section 989.88... GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 989.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this amended...

  14. 7 CFR 989.88 - Duration of immunities.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 8 2011-01-01 2011-01-01 false Duration of immunities. 989.88 Section 989.88... GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 989.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this amended...

  15. 7 CFR 981.88 - Duration of immunities.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 8 2012-01-01 2012-01-01 false Duration of immunities. 981.88 Section 981.88... Regulating Handling Miscellaneous Provisions § 981.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this subpart shall cease upon its termination except...

  16. 7 CFR 981.88 - Duration of immunities.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Duration of immunities. 981.88 Section 981.88... Regulating Handling Miscellaneous Provisions § 981.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this subpart shall cease upon its termination except...

  17. 7 CFR 989.88 - Duration of immunities.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 8 2013-01-01 2013-01-01 false Duration of immunities. 989.88 Section 989.88... GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 989.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this amended...

  18. 7 CFR 989.88 - Duration of immunities.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Duration of immunities. 989.88 Section 989.88... GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 989.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this amended...

  19. 7 CFR 989.88 - Duration of immunities.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 8 2014-01-01 2014-01-01 false Duration of immunities. 989.88 Section 989.88... GROWN IN CALIFORNIA Order Regulating Handling Miscellaneous Provisions § 989.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this amended...

  20. 7 CFR 981.88 - Duration of immunities.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 8 2014-01-01 2014-01-01 false Duration of immunities. 981.88 Section 981.88... Regulating Handling Miscellaneous Provisions § 981.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this subpart shall cease upon its termination except...

  1. 7 CFR 981.88 - Duration of immunities.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 8 2013-01-01 2013-01-01 false Duration of immunities. 981.88 Section 981.88... Regulating Handling Miscellaneous Provisions § 981.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this subpart shall cease upon its termination except...

  2. 7 CFR 981.88 - Duration of immunities.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 8 2011-01-01 2011-01-01 false Duration of immunities. 981.88 Section 981.88... Regulating Handling Miscellaneous Provisions § 981.88 Duration of immunities. The benefits, privileges, and immunities conferred upon any person by virtue of this subpart shall cease upon its termination except...

  3. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 1 2011-07-01 2011-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8 Comprehensive...

  4. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8 Comprehensive...

  5. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 1 2012-07-01 2012-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8 Comprehensive...

  6. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 1 2013-07-01 2013-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8 Comprehensive...

  7. 40 CFR 8.8 - Comprehensive environmental evaluation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 1 2014-07-01 2014-07-01 false Comprehensive environmental evaluation. 8.8 Section 8.8 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL ENVIRONMENTAL IMPACT ASSESSMENT OF NONGOVERNMENTAL ACTIVITIES IN ANTARCTICA § 8.8 Comprehensive...

  8. 29 CFR 452.88 - Resumption of good standing.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 2 2010-07-01 2010-07-01 false Resumption of good standing. 452.88 Section 452.88 Labor... DISCLOSURE ACT OF 1959 Right To Vote § 452.88 Resumption of good standing. While it is permissible for a... member has resumed his good-standing status, it would be unreasonable to continue to deprive him of...

  9. 21 CFR 520.88d - Amoxicillin trihydrate soluble powder.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 6 2011-04-01 2011-04-01 false Amoxicillin trihydrate soluble powder. 520.88d Section 520.88d Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS § 520.88d Amoxicillin trihydrate soluble powder....

  10. 21 CFR 520.88d - Amoxicillin trihydrate soluble powder.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 6 2010-04-01 2010-04-01 false Amoxicillin trihydrate soluble powder. 520.88d Section 520.88d Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS ORAL DOSAGE FORM NEW ANIMAL DRUGS § 520.88d Amoxicillin trihydrate soluble powder....

  11. 28 CFR 115.88 - Data review for corrective action.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 2 2013-07-01 2013-07-01 false Data review for corrective action. 115.88 Section 115.88 Judicial Administration DEPARTMENT OF JUSTICE (CONTINUED) PRISON RAPE ELIMINATION ACT NATIONAL STANDARDS Standards for Adult Prisons and Jails Data Collection and Review § 115.88 Data review for corrective action. (a) The agency...

  12. 28 CFR 8.8 - Advertisement and declaration of forfeiture.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 1 2011-07-01 2011-07-01 false Advertisement and declaration of forfeiture. 8.8 Section 8.8 Judicial Administration DEPARTMENT OF JUSTICE FBI FORFEITURE AUTHORITY FOR CERTAIN STATUTES § 8.8 Advertisement and declaration of forfeiture. (a) The notice required by customs laws, section 607, Tariff Act of 1930, as amended...

  13. 40 CFR 87.83-87.88 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 21 2012-07-01 2012-07-01 false 87.83-87.88 Section 87.83-87.88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) Definitions. Test Procedures for Engine Smoke Emissions (Aircraft Gas Turbine Engines) §§ 87.83-87.88...

  14. 27 CFR 6.88 - Equipment and supplies.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Equipment and supplies. 6.88 Section 6.88 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS âTIED-HOUSEâ Exceptions § 6.88 Equipment and supplies. (a) General. The act by an industry member of selling...

  15. 27 CFR 6.88 - Equipment and supplies.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2011-04-01 2011-04-01 false Equipment and supplies. 6.88 Section 6.88 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS âTIED-HOUSEâ Exceptions § 6.88 Equipment and supplies. (a) General. The act by an industry member of selling...

  16. SU-E-T-116: Dose Response in the Treatment of Unresectable Cholangiocarcinoma with Yttrium-90 Microspheres

    SciTech Connect

    Yu, S; Green, G; Sehgal, V; Samford, G; Kuo, J; Imagawa, D; Fernando, D; Al-Ghazi, M

    2014-06-01

    Purpose: The purpose of this study is to assess the dose response of radioembolization using yttrium-90 (Y-90) microspheres in patients treated for unresectable cholangiocarcinoma. This study utilized partition dosimetry model for the dose calculation. The results show survival benefit with dose escalation. Methods: Between February 2009 and March 2013, ten patients with pathology proven unresectable cholangiocarcinoma were radioembolized with Y-90 microspheres. Patients underwent initial pre-treatment angiographic assessment for blood flow and 99mTc- MAA for lung shunt evaluation. Activity of Y-90 administration was calculated using the Body Surface Area (BSA) and target volumes which were determined by contouring the pre-treatment MRI/CT images using a radiation therapy treatment planning system. Medical Internal Radiation Dose (MIRD) method was used to assess the dosimetric results of Y90. Partition model based on the tumor to-liver activity uptake estimated from pretreatment 99mTc- MAA study was used to calculate the dose delivered to the target. The variables assessed included: administered dose, toxicity based on clinical changes, imaging based tumor response, and survival. Results: Ten patients were radioembolized with Y-90 microspheres to either one hepatic lobe or both left and right lobes. Patients were stratified by dose. Four patients who received dose greater than 140Gy (p < 0.05) all survived. The corresponding activity they received was greater than 35 mCi. Six out of ten patients died of disease with median survival of 18 weeks (range 12–81wks). Conclusion: Given the growing body of data for Y-90 microspheres in the context of cholangiocarcinoma, radioembolization may become an important treatment modality for an appropriately selected group of patients. Our study further substantiates past studies and shows additional evidence of a survival benefit with dose escalation.

  17. Bacterial Infections in Myd88-Deficient Mice

    PubMed Central

    Villano, Jason S; Rong, Fang; Cooper, Timothy K

    2014-01-01

    Three breeding colonies of Myd88?/? mice had a history of significant morbidity and mortality. Although strain-specific poor reproductive performance might explain neonatal death and dystocia, mice were found dead or required euthanasia because of moribundity, distended abdomen, head tilt, and seizures. Histopathology results included bacteremia, placentitis, metritis, peritonitis with abscess formation, and suppurative meningoencephalitis. Intralesional gram-negative coccobacilli were present, often in extremely high number. Cultures of samples of the cardiac blood of a mouse and from water-bottle sipper tubes provided to some affected mice grew Pseudomonas aeruginosa. In addition, affected tissues from 2 mice and feces from a third tested PCR-positive for P. aeruginosa. Although the mice had received autoclaved reverse-osmosis–purified drinking water, we suspect that the mice were inoculated with P. aeruginosa through contaminated sipper tubes. Because of the deficiency in most of the Toll-like receptor signaling pathways, these Myd88?/? mice were unlikely to have developed competitive innate and adaptive immune responses, resulting in bacterial infections. These clinical cases underscore the importance of understanding how genotype, phenotype and environment affect animal health. Sound husbandry and experimental practices are needed to prevent the exposure of immunodeficient mice to pathogens. PMID:24674585

  18. Bacterial infections in Myd88-deficient mice.

    PubMed

    Villano, Jason S; Rong, Fang; Cooper, Timothy K

    2014-04-01

    Three breeding colonies of Myd88(-/-) mice had a history of significant morbidity and mortality. Although strain-specific poor reproductive performance might explain neonatal death and dystocia, mice were found dead or required euthanasia because of moribundity, distended abdomen, head tilt, and seizures. Histopathology results included bacteremia, placentitis, metritis, peritonitis with abscess formation, and suppurative meningoencephalitis. Intralesional gram-negative coccobacilli were present, often in extremely high number. Cultures of samples of the cardiac blood of a mouse and from water-bottle sipper tubes provided to some affected mice grew Pseudomonas aeruginosa. In addition, affected tissues from 2 mice and feces from a third tested PCR-positive for P. aeruginosa. Although the mice had received autoclaved reverse-osmosis-purified drinking water, we suspect that the mice were inoculated with P. aeruginosa through contaminated sipper tubes. Because of the deficiency in most of the Toll-like receptor signaling pathways, these Myd88(-/-) mice were unlikely to have developed competitive innate and adaptive immune responses, resulting in bacterial infections. These clinical cases underscore the importance of understanding how genotype, phenotype and environment affect animal health. Sound husbandry and experimental practices are needed to prevent the exposure of immuno-deficient mice to pathogens. PMID:24674585

  19. Electronic and magnetic properties of yttrium-doped silicon carbide nanotubes: Density functional theory investigations

    NASA Astrophysics Data System (ADS)

    Khaira, Jobanpreet S.; Jain, Richa N.; Chakraborty, Brahmananda; Ramaniah, Lavanya M.

    2015-06-01

    The electronic structure of yttrium-doped Silicon Carbide Nanotubes has been theoretically investigated using first principles density functional theory (DFT). Yttrium atom is bonded strongly on the surface of the nanotube with a binding energy of 2.37 eV and prefers to stay on the hollow site at a distance of around 2.25 Å from the tube. The semi-conducting nanotube with chirality (4, 4) becomes half mettalic with a magnetic moment of 1.0 µB due to influence of Y atom on the surface. There is strong hybridization between d orbital of Y with p orbital of Si and C causing a charge transfer from d orbital of the Y atom to the tube. The Fermi level is shifted towards higher energy with finite Density of States for only upspin channel making the system half metallic and magnetic which may have application in spintronic devices.

  20. A fast and simple methodology for determination of yttrium as an inert marker in digestibility studies.

    PubMed

    Reis, Pedro A; Valente, Luísa M P; Almeida, C Marisa R

    2008-06-01

    The need to develop a fast, simple and low cost methodology for the determination of yttrium in fish diets and faeces using a microwave digestion system and atomic absorption spectrometry with flame atomization analysis was the main aim of this study. The final methodology consisted in the digestion of approximately 300mg of dry fish diet or 100mg of dry fish faeces in teflon vessels using Parr reactor bombs, at high pressure, in a domestic microwave system with nitric acid solution. After digestion, 330?l of a 120mg potassium nitrate/ml solution was added to each solution. Yttrium was determined using a calibration with aqueous standards. Analytical difficulties and problems encountered during the optimizations were overcome and the application of the final methodology to the fish diets and faeces samples was carried out with suitable results. PMID:26065776

  1. Effect of sintering on electrical properties of yttrium doped Li-based NASICON compounds

    NASA Astrophysics Data System (ADS)

    Kothari, Dharmesh H.; Kanchan, D. K.; Dave, Gargi

    2015-08-01

    Electrical properties of Lithium based Li1.3Al0.3-xYxTi1.7(PO4)3 (LAYTP) system was prepared using solid state reaction route. The samples were subjected to differing duration of sintering. X-ray diffraction was used to investigate the microstructure while density measurement was performed to determine the effect of sintering on the density of the prepared samples. Electrical properties of the material were studied using impedance spectroscopy, in frequency range 20 MHz to 1 Hz and in temperature range 303 K to 423 K. It was found that sample with least amount of yttrium and which was sintered for least duration had superior conductivity over other samples. It was also found that grain boundary conductivity improved marginally for sample with higher proportion of yttrium heat treated for longer duration.

  2. Barium and Yttrium abundance in intermediate-age and old open clusters

    E-print Network

    Mishenina, T; Carraro, G; Kovtyukh, V V; Yegorova, I A

    2013-01-01

    Barium is a neutron capture element, that, in open clusters, is frequently over-abundant with respect to the Iron. A clear explanation for this is still missing. Additionally, its gradient across the Galactic disk is poorly constrained. We measure the abundance of yttrium and barium using the synthetic spectrum method from UVES high-resolution spectra of eight distant open clusters, namely Ruprecht 4, Ruprecht 7, Berkeley 25, Berkeley 73, Berkeley 75, NGC 6192, NGC 6404, and NGC 6583. The barium abundance was estimated using NLTE approximation. We confirm that Barium is indeed over-abundant in most clusters, especially young clusters. Finally, we investigated the trend of yttrium and barium abundances as a function of distance in the Galaxy and ages. Several scenarios for the barium over-abundance are then discussed.

  3. Co-sputtering yttrium into hafnium oxide thin films to produce ferroelectric properties

    SciTech Connect

    Olsen, T.; Schroeder, U.; Mueller, S.; Krause, A.; Martin, D.; Singh, A.; Mueller, J.; Geidel, M.; Mikolajick, T.

    2012-08-20

    Thin film capacitors were fabricated by sputtering TiN-Y doped HfO{sub 2}-TiN stacks on silicon substrates. Yttrium was incorporated into the HfO{sub 2} layers by simultaneously sputtering from Y{sub 2}O{sub 3} and HfO{sub 2} sources. Electric polarization and relative permittivity measurements yield distinct ferroelectric properties as a result of low yttrium dopant concentrations in the range of 0.9-1.9 mol. %. Grazing incidence x-ray diffraction measurements show the formation of an orthorhombic phase in this range. Compared to atomic layer deposition films, the highest remanent polarization and the highest relative permittivity were obtained at significantly lower doping concentrations in these sputtered films.

  4. Spectroscopic investigation of the Cr to Tm energy transfer in Yttrium Aluminum Garnet (YAG) crystals

    NASA Technical Reports Server (NTRS)

    Dibartolo, B.

    1988-01-01

    New and interesting schemes have recently been considered for the efficient operation of solid-state ionic laser systems. Often the available data on these systems were obtained only because they seemed directly related to the laser performance and provide no insight into the physical processes. A more systematic approach is desirable, where more attention is devoted to the elementary basic processes and to the nature of the mechanisms at work. It is with this aim that we have undertaken the present study. Yttrium Aluminum Garnet (Y4Al5O12), called YAG, has two desirable properties as host for rare earth impurities: (1) trivalent rare earth ions can replace the yttrium without any charge compensation problem, and (2) YAG crystals have high cutoff energies. The results of measurements and calculations indicate that the Cr(3+) ion in YAG can be used to sensitize efficiently the Tm(3+) ion.

  5. First principles DFT investigation of yttrium-doped graphene: Electronic structure and hydrogen storage

    SciTech Connect

    Desnavi, Sameerah; Chakraborty, Brahmananda; Ramaniah, Lavanya M.

    2014-04-24

    The electronic structure and hydrogen storage capability of Yttrium-doped grapheme has been theoretically investigated using first principles density functional theory (DFT). Yttrium atom prefers the hollow site of the hexagonal ring with a binding energy of 1.40 eV. Doping by Y makes the system metallic and magnetic with a magnetic moment of 2.11 ?{sub B}. Y decorated graphene can adsorb up to four hydrogen molecules with an average binding energy of 0.415 eV. All the hydrogen atoms are physisorbed with an average desorption temperature of 530.44 K. The Y atoms can be placed only in alternate hexagons, which imply a wt% of 6.17, close to the DoE criterion for hydrogen storage materials. Thus, this system is potential hydrogen storage medium with 100% recycling capability.

  6. Mott insulator-to-metal transition in yttrium-doped CaIrO3

    NASA Astrophysics Data System (ADS)

    Gunasekera, J.; Chen, Y.; Kremenak, J. W.; Miceli, P. F.; Singh, D. K.

    2015-02-01

    We report on the study of insulator-to-metal transition in post-perovskite compound CaIrO3. It is discovered that a gradual chemical substitution of calcium by yttrium leads to the onset of strong metallic behavior in this compound. This observation is in stark contrast to BaIrO3, which preserves its Mott insulating behavior despite excess of the charge carriers due to yttrium doping. Magnetic measurements reveal that both compounds tend to exhibit magnetic character irrespective of the chemical substitution of Ca or Ba. We analyze these unusual observations in light of recent researches that suggest that CaIrO3 does not necessarily possess j = 1/2 ground state due to structural distortion. The insulator-to-metal transition in CaIrO3 will spur new researches to explore more exotic ground state, including superconductivity, in post-perovskite Mott insulators.

  7. Identification of a new yttrium oxycarbide, Y/sub 2/OC

    SciTech Connect

    Holcombe, C.E.; Carpenter, D.A.

    1981-05-01

    A new face-centered-cubic (fcc) compound has been identified in the system yttrium-oxygen-carbon (Y-O-C). Several synthesis routes with reaction temperatures from 930/sup 0/ to 2000/sup 0/C produce the phase. Quantitative X-ray diffraction (XRD) phase analysis indicated the composition to be Y/sub 2/OC. The powder XRD pattern and refined lattice parameter are reported. 3 tables.

  8. Observation of spin rectification in Pt/yttrium iron garnet bilayer

    SciTech Connect

    Rao, Jinwei; Fan, Xiaolong Zhou, Hengan; Zhao, Xiaobing; Zhao, Jing; Zhang, Fengzhen; Xue, Desheng; Ma, Li; Zhou, Shiming

    2015-05-07

    We used the ferromagnetic resonance (FMR) to study the dc voltage generation in Pt 20?nm layer deposited on yttrium iron garnet. Although the main contribution to the FMR voltage comes from the inverse spin Hall effect associated with spin pumping, the spin rectification would also contribute the resonance signal via the “new” magnetoresistance effect in Pt layer. Based on a symmetry consideration, we can separate those two effects through angular dependent resonance amplitude.

  9. Spin wave localization in one-dimensional magnonic microcavity comprising yttrium iron garnet

    SciTech Connect

    Kanazawa, Naoki; Goto, Taichi Inoue, Mitsuteru

    2014-08-28

    We demonstrate the localization of magnetostatic surface waves, i.e., spin waves, in a one-dimensional magnonic microcavity substantialized with periodical conductivity modulation. The narrow localized state is observed inside band gaps and is responsible for a sharp transmission peak. The experimental results strongly agree with the theoretical prediction made with the shape magnetic anisotropy of the propagating medium composed of yttrium iron garnet taken into account.

  10. Efficient holmium:yttrium lithium fluoride laser longitudinally pumped by a semiconductor laser array

    NASA Technical Reports Server (NTRS)

    Hemmati, H.

    1987-01-01

    Optical pumping of a holmium:yttrium lithium floride (Ho:YLF) crystal with a 790-nm continuous-wave diode-laser array has generated 56 mW of 2.1-micron laser radiation with an optical-to-optical conversion slope efficiency of 33 percent while the crystal temperature is held at 77 K. The lasing threshold occurs at 7 mW of input power, and laser operation continues up to a crystal temperature of 124 K.

  11. Engineering of the band gap and optical properties of thin films of yttrium hydride

    SciTech Connect

    You, Chang Chuan; Mongstad, Trygve; Maehlen, Jan Petter; Karazhanov, Smagul

    2014-07-21

    Thin films of oxygen-containing yttrium hydride show photochromic effect at room temperature. In this work, we have studied structural and optical properties of the films deposited at different deposition pressures, discovering the possibility of engineering the optical band gap by variation of the oxygen content. In sum, the transparency of the films and the wavelength range of photons triggering the photochromic effect can be controlled by variation of the deposition pressure.

  12. Yttrium-90 Radioembolization of Hepatocellular Carcinoma-Performance, Technical Advances, and Future Concepts.

    PubMed

    Molvar, Christopher; Lewandowski, Robert

    2015-12-01

    Hepatocellular carcinoma (HCC) is a lethal tumor, claiming over half a million lives per year. Treatment of HCC is commonly performed without curative intent, and palliative options dominate, including catheter-based therapies, namely, transarterial chemoembolization and yttrium-90 ((90)Y) radioembolization. This review will showcase the performance of (90)Y radioembolization for the treatment of HCC, focusing on recent seminal data and technical advances. In particular, novel radioembolization treatment concepts are discussed and compared with conventional HCC therapy. PMID:26622103

  13. Peripheral Blood Lymphocyte Depletion After Hepatic Arterial {sup 90}Yttrium Microsphere Therapy for Hepatocellular Carcinoma

    SciTech Connect

    Carr, Brian I.; Metes, Diana M.

    2012-03-01

    Purpose: The short- and long-term effects of {sup 90}Yttrium microspheres therapy for hepatocellular carcinoma (HCC) on peripheral blood lymphocytes are unknown and were therefore examined. Methods and Materials: Ninety-two HCC patients were enrolled in a {sup 90}Yttrium therapy study and routine blood counts were examined as part of standard clinical monitoring. Results: We found an early, profound, and prolonged lymphopenia. In a subsequent cohort of 25 additional HCC patients, prospective flow cytometric immune-monitoring analysis was performed to identify specific changes on distinct lymphocyte subsets (i.e., CD3, CD4, CD8 T, and CD19 B lymphocytes) and NK cells absolute numbers, in addition to the granulocytes and platelets subsets. We found that the pretreatment lymphocyte subset absolute numbers (with the exception of NK cells) had a tendency to be lower compared with healthy control values, but no significant differences were detected between groups. Posttherapy follow-up revealed that overall, all lymphocyte subsets, except for NK cells, were significantly (>50% from pretherapy values), promptly (as early as 24 h) and persistently (up to 30 months) depleted post-{sup 90}Yttrium microspheres therapy. In contrast, granulocytes increased rapidly (24 h) to compensate for lymphocyte depletion, and remained increased at 1-year after therapy. We further stratified patients into two groups, according to survival at 1 year. We found that lack of recovery of CD19, CD3, CD8, and especially CD4 T cells was linked to poor patient survival. No fungal or bacterial infections were noted during the 30-month follow-up period. Conclusions: The results show that lymphocytes (and not granulocytes, platelets, or NK cells) are sensitive to hepatic arterial {sup 90}Yttrium without associated clinical toxicity, and lack of lymphocyte recovery (possibly leading to dysregulation of adaptive cellular immunity) posttherapy indicates poor survival.

  14. Engineering of the band gap and optical properties of thin films of yttrium hydride

    NASA Astrophysics Data System (ADS)

    You, Chang Chuan; Mongstad, Trygve; Maehlen, Jan Petter; Karazhanov, Smagul

    2014-07-01

    Thin films of oxygen-containing yttrium hydride show photochromic effect at room temperature. In this work, we have studied structural and optical properties of the films deposited at different deposition pressures, discovering the possibility of engineering the optical band gap by variation of the oxygen content. In sum, the transparency of the films and the wavelength range of photons triggering the photochromic effect can be controlled by variation of the deposition pressure.

  15. Long-Pulsed Neodymium-Doped Yttrium Aluminum Garnet Laser for Glomuvenous Malformations in Adolescents.

    PubMed

    Trost, Jaren; Buckley, Colin; Smidt, Aimee C

    2015-01-01

    Currently there exist few reported cases where lasers are used successfully to treat glomuvenous malformations in adolescents. In the two cases described here, we provide evidence that the long-pulsed neodymium-doped yttrium aluminum garnet laser is an effective and safe alternative treatment for these lesions. Our case series is unique because it focuses on adolescents, the population that most often seeks treatment for this dermatologic condition. PMID:26138991

  16. Hydrothermal synthesis, crystal structures and photoluminescence properties of mixed europium-yttrium organic frameworks

    SciTech Connect

    Han Yinfeng; Fu Lianshe; Mafra, Luis; Shi, Fa-Nian

    2012-02-15

    Three mixed europium-yttrium organic frameworks: Eu{sub 2-x}Y{sub x}(Mel)(H{sub 2}O){sub 6} (Mel=mellitic acid or benzene-1,2,3,4,5,6-hexacarboxylic acid, x=0.38 1, 0.74 2, and 0.86 3) have been synthesized and characterized. All the compounds contain a 3-D net with (4, 8)-flu topology. The study indicates that the photoluminescence properties are effectively affected by the different ratios of europium and yttrium ions, the quantum efficiency is increased and the Eu{sup 3+} lifetime becomes longer in these MOFs than those of the Eu analog. - Graphical abstract: Three mixed europium and yttrium organic frameworks: Eu{sub 2-x}Y{sub x}(Mel)(H{sub 2}O){sub 6} (Mel=mellitic acid) have been synthesized and characterized. All the compounds contain a 3-D net with (4, 8)-flu topology. The study indicates that the photoluminescence properties are effectively affected by the different ratios of europium and yttrium ions, the quantum efficiency is increased and the Eu{sup 3+} lifetime becomes longer in these MOFs than those of the Eu analog. Highlights: Black-Right-Pointing-Pointer Three (4, 8)-flu topological mixed Eu and Y MOFs were synthesized under mild conditions. Black-Right-Pointing-Pointer Metal ratios were refined by the single crystal data consistent with the EDS analysis. Black-Right-Pointing-Pointer Mixed Eu and Y MOFs show longer lifetime and higher quantum efficiency than the Eu analog. Black-Right-Pointing-Pointer Adding inert lanthanide into luminescent MOFs enlarges the field of luminescent MOFs.

  17. Superselective Internal Radiation With Yttrium-90 Microspheres in the Management of a Chemorefractory Testicular Liver Metastasis

    SciTech Connect

    Sideras, Panagiotis A.; Sofocleous, Constantinos T. Brody, Lynn A.; Siegelbaum, Robert H.; Shah, Rajesh P.; Taskar, Neeta-Pandit

    2012-04-15

    We treated a patient with biopsy-proven, chemotherapy-resistant testicular cancer liver metastasis using Y-90 selective internal radiation treatment. We chose yttrium-90 rather than surgery and ablation due to tumor location and size as well as the patient's clinical history. The result was marked tumor response by positron emission tomography and computed tomography as well as significant improvement of the patient's quality of life accompanied by a substantial decrease of his tumor markers.

  18. Intestinal epithelial MyD88 is a sensor switching host metabolism towards obesity according to nutritional status

    PubMed Central

    Everard, Amandine; Geurts, Lucie; Caesar, Robert; Van Hul, Matthias; Matamoros, Sébastien; Duparc, Thibaut; Denis, Raphael G. P.; Cochez, Perrine; Pierard, Florian; Castel, Julien; Bindels, Laure B.; Plovier, Hubert; Robine, Sylvie; Muccioli, Giulio G.; Renauld, Jean-Christophe; Dumoutier, Laure; Delzenne, Nathalie M.; Luquet, Serge; Bäckhed, Fredrik; Cani, Patrice D.

    2014-01-01

    Obesity is associated with a cluster of metabolic disorders, low-grade inflammation and altered gut microbiota. Whether host metabolism is controlled by intestinal innate immune system and the gut microbiota is unknown. Here we report that inducible intestinal epithelial cell-specific deletion of MyD88 partially protects against diet-induced obesity, diabetes and inflammation. This is associated with increased energy expenditure, an improved glucose homeostasis, reduced hepatic steatosis, fat mass and inflammation. Protection is transferred following gut microbiota transplantation to germ-free recipients. We also demonstrate that intestinal epithelial MyD88 deletion increases anti-inflammatory endocannabinoids, restores antimicrobial peptides production and increases intestinal regulatory T cells during diet-induced obesity. Targeting MyD88 after the onset of obesity reduces fat mass and inflammation. Our work thus identifies intestinal epithelial MyD88 as a sensor changing host metabolism according to the nutritional status and we show that targeting intestinal epithelial MyD88 constitutes a putative therapeutic target for obesity and related disorders. PMID:25476696

  19. Intestinal epithelial MyD88 is a sensor switching host metabolism towards obesity according to nutritional status.

    PubMed

    Everard, Amandine; Geurts, Lucie; Caesar, Robert; Van Hul, Matthias; Matamoros, Sébastien; Duparc, Thibaut; Denis, Raphael G P; Cochez, Perrine; Pierard, Florian; Castel, Julien; Bindels, Laure B; Plovier, Hubert; Robine, Sylvie; Muccioli, Giulio G; Renauld, Jean-Christophe; Dumoutier, Laure; Delzenne, Nathalie M; Luquet, Serge; Bäckhed, Fredrik; Cani, Patrice D

    2014-01-01

    Obesity is associated with a cluster of metabolic disorders, low-grade inflammation and altered gut microbiota. Whether host metabolism is controlled by intestinal innate immune system and the gut microbiota is unknown. Here we report that inducible intestinal epithelial cell-specific deletion of MyD88 partially protects against diet-induced obesity, diabetes and inflammation. This is associated with increased energy expenditure, an improved glucose homeostasis, reduced hepatic steatosis, fat mass and inflammation. Protection is transferred following gut microbiota transplantation to germ-free recipients. We also demonstrate that intestinal epithelial MyD88 deletion increases anti-inflammatory endocannabinoids, restores antimicrobial peptides production and increases intestinal regulatory T cells during diet-induced obesity. Targeting MyD88 after the onset of obesity reduces fat mass and inflammation. Our work thus identifies intestinal epithelial MyD88 as a sensor changing host metabolism according to the nutritional status and we show that targeting intestinal epithelial MyD88 constitutes a putative therapeutic target for obesity and related disorders. PMID:25476696

  20. Time of formation and genesis of yttrium-zirconium mineralization in the Sakharjok massif, Kola Peninsula

    NASA Astrophysics Data System (ADS)

    Vetrin, V. R.; Skublov, S. G.; Balashov, Yu. A.; Lyalina, L. M.; Rodionov, N. V.

    2014-12-01

    The Kola geotectonic province in the northeastern Fennoscandian Shield accommodates a significant number of alkaline rock massifs differing in age. They are of mantle and mantle-crustal origin (alkali and nepheline syenites, carbonatites) and related to crustal sources (Neoarchean alkali granites). Among them, the Neoarchean Sakharjok nepheline syenite massif is related to the oldest intrusions of this kind bearing yttrium-zirconium mineralization. The crystallization of alkali syenite pertaining to the first intrusive phase of the intrusive Sakharjok massif is dated to 2645 ± 7 Ma, and this implies that this syenite postdated alkali granites (2.66-2.67 Ga). To date the yttrium-zirconium ore, we applied the local U-Pb method to zircon crystals occurring in the mineralized block hosted in nepheline syenite. The earliest fragments of zircon crystallized 1832 ± 7 Ma ago; the age of metamorphism is estimated at 1784 ± 13 Ma. These dates indicate the Paleoproterozoic age of the yttrium-zirconium mineralization, which was formed as a product of fluid reworking of the Neoarchean nepheline syenite of the Sakharjok massif.

  1. Off-line studies of the laser ionization of yttrium at the IGISOL facility

    E-print Network

    Kessler, T; Kudryavtsev, Y; Peräjärvi, K; Popov, A; Ronkanen, P; Sonoda, T; Tordoff, B; Wendt, K D A; Äystö, J

    2007-01-01

    A laser ion source is under development at the IGISOL facility, Jyvaskyla, in order to address deficiencies in the ion guide technique. The key elements of interest are those of a refractory nature, whose isotopes and isomers are widely studied using both laser spectroscopic and high precision mass measurement techniques. Yttrium has been the first element of choice for the new laser ion source. In this work we present a new coupled dye-Ti:Sapphire laser scheme and give a detailed discussion of the results obtained from laser ionization of yttrium atoms produced in an ion guide via joule heating of a filament. The importance of not only gas purity, but indeed the baseline vacuum pressure in the environment outside the ion guide is discussed in light of the fast gas phase chemistry seen in the yttrium system. A single laser shot model is introduced and is compared to the experimental data in order to extract the level of impurities within the gas cell.

  2. Off-line studies of the laser ionization of yttrium at the IGISOL facility

    E-print Network

    T. Kessler; I. D. Moore; Y. Kudryavtsev; K. Perajarvi; A. Popov; P. Ronkanen; T. Sonoda; B. Tordoff; K. D. A. Wendt; J. Aysto

    2007-09-26

    A laser ion source is under development at the IGISOL facility, Jyvaskyla, in order to address deficiencies in the ion guide technique. The key elements of interest are those of a refractory nature, whose isotopes and isomers are widely studied using both laser spectroscopic and high precision mass measurement techniques. Yttrium has been the first element of choice for the new laser ion source. In this work we present a new coupled dye-Ti:Sapphire laser scheme and give a detailed discussion of the results obtained from laser ionization of yttrium atoms produced in an ion guide via joule heating of a filament. The importance of not only gas purity, but indeed the baseline vacuum pressure in the environment outside the ion guide is discussed in light of the fast gas phase chemistry seen in the yttrium system. A single laser shot model is introduced and is compared to the experimental data in order to extract the level of impurities within the gas cell.

  3. Cold laser machining of nickel-yttrium stabilised zirconia cermets: Composition dependence

    SciTech Connect

    Sola, D.

    2009-09-15

    Cold laser micromachining efficiency in nickel-yttrium stabilised zirconia cermets was studied as a function of cermet composition. Nickel oxide-yttrium stabilised zirconia ceramic plates obtained via tape casting technique were machined using 8-25 ns pulses of a Nd: YAG laser at the fixed wavelength of 1.064 {mu}m and a frequency of 1 kHz. The morphology of the holes, etched volume, drill diameter, shape and depth were evaluated as a function of the processing parameters such as pulse irradiance and of the initial composition. The laser drilling mechanism was evaluated in terms of laser-material interaction parameters such as beam absorptivity, material spallation and the impact on the overall process discussed. By varying the nickel oxide content of the composite the optical absorption (-value is greatly modified and significantly affected the drilling efficiency of the green state ceramic substrates and the morphology of the holes. Higher depth values and improved drilled volume upto 0.2 mm{sup 3} per pulse were obtained for substrates with higher optical transparency (lower optical absorption value). In addition, a laser beam self-focussing effect is observed for the compositions with less nickel oxide content. Holes with average diameter from 60 {mu}m to 110 {mu}m and upto 1 mm in depth were drilled with a high rate of 40 ms per hole while the final microstructure of the cermet obtained by reduction of the nickel oxide-yttrium stabilised zirconia composites remained unchanged.

  4. Recovery of niobium from irradiated targets

    DOEpatents

    Phillips, Dennis R. (Los Alamos, NM); Jamriska, Sr., David J. (Los Alamos, NM); Hamilton, Virginia T. (Los Alamos, NM)

    1994-01-01

    A process for selective separation of niobium from proton irradiated molybdenum targets is provided and includes dissolving the molybdenum target in a hydrogen peroxide solution to form a first ion-containing solution, contacting the first ion-containing solution with a cationic resin whereby ions selected form the group consisting of molybdenum, biobium, technetium, selenium, vanadium, arsenic, germanium, zirconium and rubidium remain in a second ion-containing solution while ions selected from the group consisting of rubidium, zinc, beryllium, cobalt, iron, manganese, chromium, strontium, yttrium and zirconium are selectively adsorbed by the cationic resin; adjusting the pH of the second ion-containing solution to within a range of from about 5.0 to about 6.0; contacting the pH adjusting second ion-containing solution with a dextran-based material for a time to selectively separate niobium from the solution and recovering the niobium from the dextran-based material.

  5. Secondary laser cooling of strontium-88 atoms

    NASA Astrophysics Data System (ADS)

    Strelkin, S. A.; Khabarova, K. Yu.; Galyshev, A. A.; Berdasov, O. I.; Gribov, A. Yu.; Kolachevsky, N. N.; Slyusarev, S. N.

    2015-07-01

    The secondary laser cooling of a cloud of strontium-88 atoms on the 1 S 0-3 P 1 (689 nm) intercombination transition captured into a magneto-optical trap has been demonstrated. We describe in detail the recapture of atoms from the primary trap operating on the strong 1 S 0-1 P 1 (461 nm) transition and determine the recapture coefficient ?, the number of atoms, and their temperature in the secondary trap as a function of experimental parameters. A temperature of 2 µK has been reached in the secondary trap at the recapture coefficient ? = 6%, which confirms the secondary cooling efficiency and is sufficient to perform metrological measurements of the 1 S 0-3 P 1 (698 nm) clock transition in an optical lattice.

  6. A Study on Factors Affecting the Degradation of Magnesium and a Magnesium-Yttrium Alloy for Biomedical Applications

    PubMed Central

    Johnson, Ian; Liu, Huinan

    2013-01-01

    Controlling degradation of magnesium or its alloys in physiological saline solutions is essential for their potential applications in clinically viable implants. Rapid degradation of magnesium-based materials reduces the mechanical properties of implants prematurely and severely increases alkalinity of the local environment. Therefore, the objective of this study is to investigate the effects of three interactive factors on magnesium degradation, specifically, the addition of yttrium to form a magnesium-yttrium alloy versus pure magnesium, the metallic versus oxide surfaces, and the presence versus absence of physiological salt ions in the immersion solution. In the immersion solution of phosphate buffered saline (PBS), the magnesium-yttrium alloy with metallic surface degraded the slowest, followed by pure magnesium with metallic or oxide surfaces, and the magnesium-yttrium alloy with oxide surface degraded the fastest. However, in deionized (DI) water, the degradation rate showed a different trend. Specifically, pure magnesium with metallic or oxide surfaces degraded the slowest, followed by the magnesium-yttrium alloy with oxide surface, and the magnesium-yttrium alloy with metallic surface degraded the fastest. Interestingly, only magnesium-yttrium alloy with metallic surface degraded slower in PBS than in DI water, while all the other samples degraded faster in PBS than in DI water. Clearly, the results showed that the alloy composition, presence or absence of surface oxide layer, and presence or absence of physiological salt ions in the immersion solution all influenced the degradation rate and mode. Moreover, these three factors showed statistically significant interactions. This study revealed the complex interrelationships among these factors and their respective contributions to degradation for the first time. The results of this study not only improved our understanding of magnesium degradation in physiological environment, but also presented the key factors to consider in order to satisfy the degradation requirements for next-generation biodegradable implants and devices. PMID:23799028

  7. W88 integrated circuit shelf life program

    SciTech Connect

    Soden, J.M.; Anderson, R.E.

    1998-01-01

    The W88 Integrated Circuit Shelf Life Program was created to monitor the long term performance, reliability characteristics, and technological status of representative WR ICs manufactured by the Allied Signal Albuquerque Microelectronics Operation (AMO) and by Harris Semiconductor Custom Integrated Circuits Division. Six types of ICs were used. A total of 272 ICs entered two storage temperature environments. Electrical testing and destructive physical analysis were completed in 1995. During each year of the program, the ICs were electrically tested and samples were selected for destructive physical analysis (DPA). ICs that failed electrical tests or DPA criteria were analyzed. Fifteen electrical failures occurred, with two dominant failure modes: electrical overstress (EOS) damage involving the production test programs and electrostatic discharge (ESD) damage during analysis. Because of the extensive handling required during multi-year programs like this, it is not unusual for EOS and ESD failures to occur even though handling and testing precautions are taken. The clustering of the electrical test failures in a small subset of the test operations supports the conclusion that the test operation itself was responsible for many of the failures and is suspected to be responsible for the others. Analysis of the electrical data for the good ICs found no significant degradation trends caused by the storage environments. Forty-six ICs were selected for DPA with findings primarily in two areas: wire bonding and die processing. The wire bonding and die processing findings are not surprising since these technology conditions had been documented during manufacturing and were determined to present acceptable risk. The current reliability assessment of the W88 stockpile assemblies employing these and related ICs is reinforced by the results of this shelf life program. Data from this program will aid future investigation of 4/3 micron or MNOS IC technology failure modes.

  8. In Vivo Function of PTEX88 in Malaria Parasite Sequestration and Virulence.

    PubMed

    Matz, Joachim M; Ingmundson, Alyssa; Costa Nunes, Jean; Stenzel, Werner; Matuschewski, Kai; Kooij, Taco W A

    2015-06-01

    Malaria pathology is linked to remodeling of red blood cells by eukaryotic Plasmodium parasites. Central to host cell refurbishment is the trafficking of parasite-encoded virulence factors through the Plasmodium translocon of exported proteins (PTEX). Much of our understanding of its function is based on experimental work with cultured Plasmodium falciparum, yet direct consequences of PTEX impairment during an infection remain poorly defined. Using the murine malaria model parasite Plasmodium berghei, it is shown here that efficient sequestration to the pulmonary, adipose, and brain tissue vasculature is dependent on the PTEX components thioredoxin 2 (TRX2) and PTEX88. While TRX2-deficient parasites remain virulent, PTEX88-deficient parasites no longer sequester in the brain, correlating with abolishment of cerebral complications in infected mice. However, an apparent trade-off for virulence attenuation was spleen enlargement, which correlates with a strongly reduced schizont-to-ring-stage transition. Strikingly, general protein export is unaffected in PTEX88-deficient mutants that mature normally in vitro. Thus, PTEX88 is pivotal for tissue sequestration in vivo, parasite virulence, and preventing exacerbation of spleen pathology, but these functions do not correlate with general protein export to the host erythrocyte. The presented data suggest that the protein export machinery of Plasmodium parasites and their underlying mechanistic features are considerably more complex than previously anticipated and indicate challenges for targeted intervention strategies. PMID:25820521

  9. Model-Based Radiation Dose Correction for Yttrium-90 Microsphere Treatment of Liver Tumors With Central Necrosis

    SciTech Connect

    Liu, Ching-Sheng; Lin, Ko-Han; Lee, Rheun-Chuan; Tseng, Hsiou-Shan; Wang, Ling-Wei; Huang, Pin-I; Chao, Liung-Sheau; Chang, Cheng-Yen; Yen, Sang-Hue; Tung, Chuan-Jong; Wang, Syh-Jen; Oliver Wong, Ching-yee

    2011-11-01

    Purpose: The objectives of this study were to model and calculate the absorbed fraction {phi} of energy emitted from yttrium-90 ({sup 90}Y) microsphere treatment of necrotic liver tumors. Methods and Materials: The tumor necrosis model was proposed for the calculation of {phi} over the spherical shell region. Two approaches, the semianalytic method and the probabilistic method, were adopted. In the former method, the range--energy relationship and the sampling of electron paths were applied to calculate the energy deposition within the target region, using the straight-ahead and continuous-slowing-down approximation (CSDA) method. In the latter method, the Monte Carlo PENELOPE code was used to verify results from the first method. Results: The fraction of energy, {phi}, absorbed from {sup 90}Y by 1-cm thickness of tumor shell from microsphere distribution by CSDA with complete beta spectrum was 0.832 {+-} 0.001 and 0.833 {+-} 0.001 for smaller (r{sub T} = 5 cm) and larger (r{sub T} = 10 cm) tumors (where r is the radii of the tumor [T] and necrosis [N]). The fraction absorbed depended mainly on the thickness of the tumor necrosis configuration, rather than on tumor necrosis size. The maximal absorbed fraction {phi} that occurred in tumors without central necrosis for each size of tumor was different: 0.950 {+-} 0.000, and 0.975 {+-} 0.000 for smaller (r{sub T} = 5 cm) and larger (r{sub T} = 10 cm) tumors, respectively (p < 0.0001). Conclusions: The tumor necrosis model was developed for dose calculation of {sup 90}Y microsphere treatment of hepatic tumors with central necrosis. With this model, important information is provided regarding the absorbed fraction applicable to clinical {sup 90}Y microsphere treatment.

  10. Improved performance rhenium containing single crystal alloy turbine blades utilizing ppm levels of the highly reactive elements lanthanum and yttrium

    SciTech Connect

    Ford, D.A.; Fullagar, K.P.L.; Bhangu, H.K.; Thomas, M.C.; Burkholder, P.S.; Korinko, P.S.; Harris, K.; Wahl, J.B.

    1999-01-01

    Turbine inlet temperatures have now approached 1650 C at maximum power for the latest large commercial turbofan engines, resulting in high fuel efficiency and thrust levels approaching or exceeding 445 kN (100,000 lbs.). High reliability and durability must be intrinsically designed into these turbine engines to meet operating economic targets and ETOPS certification requirements. Re additions to cast airfoil superalloys not only improve creep and thermomechanical fatigue strength but also environmental properties, including coating performance. It is now known that sulfur (S) at levels <10 ppm but >0.2 ppm in these alloys reduces the adherence of {alpha} alumina protective scales on these materials or their coatings by weakening the Van der Waal`s bond between the scale and the alloy substrate. A team approach has been used to develop an improvement to CMSX-4 alloy which contains 3% Re, by reducing S and phosphorus (P) levels in the alloy to <2 ppm, combined with residual additions of lanthanum (La) + yttrium (Y) in the range 10--30 ppm. Results from cyclic, burner rig dynamic oxidation testing at 1093 C show thirteen times the number of cycles to initial alumina scale spallation for CMSX-4 [La + Y] compared to standard CMSX-4. The La assists with ppm chemistry control of the Y throughout the single crystal turbine blade castings through the formation of a continuous lanthanum oxide film between the molten and solidifying alloy and the ceramic core and prime coat of the shell mold. Y and La tie up the M2 ppm but >0.2 ppm residual S in the alloy as very stable Y and La sulfides and oxysulfides, thus preventing diffusion of the S atoms to the alumina scale layer under high temperature, cyclic oxidizing conditions. La also forms a stable phosphide. CMSX-4 (ULS) (La + Y) HP shroudless turbine blades will commence engine testing in May 1998.

  11. 7 CFR 983.88 - Suspension or termination.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Miscellaneous Provisions § 983.88 Suspension or...

  12. 7 CFR 983.88 - Suspension or termination.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Miscellaneous Provisions § 983.88 Suspension or...

  13. 7 CFR 983.88 - Suspension or termination.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Miscellaneous Provisions § 983.88 Suspension or...

  14. 7 CFR 983.88 - Suspension or termination.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Miscellaneous Provisions § 983.88 Suspension or...

  15. 7 CFR 983.88 - Suspension or termination.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Miscellaneous Provisions § 983.88 Suspension or...

  16. 7 CFR 1230.88 - Patents, copyrights, inventions, and publications.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE PORK PROMOTION, RESEARCH, AND CONSUMER INFORMATION Pork Promotion, Research, and Consumer Information Order Miscellaneous § 1230.88...

  17. 7 CFR 1214.88 - OMB control numbers.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE CHRISTMAS TREE PROMOTION, RESEARCH, AND INFORMATION ORDER Christmas Tree Promotion, Research, and Information Order Miscellaneous § 1214.88 OMB...

  18. 7 CFR 1214.88 - OMB control numbers.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE CHRISTMAS TREE PROMOTION, RESEARCH, AND INFORMATION ORDER Christmas Tree Promotion, Research, and Information Order Miscellaneous § 1214.88 OMB...

  19. 7 CFR 1214.88 - OMB control numbers.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE CHRISTMAS TREE PROMOTION, RESEARCH, AND INFORMATION ORDER Christmas Tree Promotion, Research, and Information Order Miscellaneous § 1214.88 OMB...

  20. 14 CFR 34.83-34.88 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...TRANSPORTATION AIRCRAFT FUEL VENTING AND EXHAUST EMISSION REQUIREMENTS FOR TURBINE ENGINE POWERED AIRPLANES Test Procedures for Engine Smoke Emissions (Aircraft Gas Turbine Engines) §§ 34.83-34.88...

  1. 14 CFR 34.83-34.88 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...TRANSPORTATION AIRCRAFT FUEL VENTING AND EXHAUST EMISSION REQUIREMENTS FOR TURBINE ENGINE POWERED AIRPLANES Test Procedures for Engine Smoke Emissions (Aircraft Gas Turbine Engines) §§ 34.83-34.88...

  2. Planktic foraminifer census data from Northwind Ridge cores PI-88-AP P3, PI-88-AR P7 and PI-88-AR P9, Arctic Ocean

    USGS Publications Warehouse

    Foley, Kevin M.; Poore, Richard Z.

    1993-01-01

    The U.S. Geological Survey recovered 9 piston cores from the Northwind Ridge in the Canada Basin of the Arctic Ocean from a cruise of the USCGC Polar Star during 1988. Preliminary analysis of the cores suggests sediments deposited on Northwind Ridge preserve a detailed record of glacial and interglacial cycles for the last few hundred-thousand to one million years. This report includes quantitative data on foraminifers and selected sediment size-fraction data in 98 samples from Northwind Ridge core PI-88AR P3, 51 samples from core PI-88-AR P7 and 117 samples from core PI-88-AR P9.

  3. On the optical properties of undoped and rare-earth-doped yttrium aluminium garnet single This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-print Network

    Collins, Gary S.

    On the optical properties of undoped and rare-earth-doped yttrium aluminium garnet single crystals.1088/0022-3727/45/1/015103 On the optical properties of undoped and rare-earth-doped yttrium aluminium garnet single crystals C R Varney, D may appear in colour only in the online journal) 1. Introduction Rare-earth-(RE)-doped yttrium

  4. Why There Are 88 Keys on the Piano: "88 Logic-The Mackay Method for Piano." Volume 1

    ERIC Educational Resources Information Center

    Mackay, Stephen R.

    2005-01-01

    Background: After trying to define the reason why the piano ended up with 88 keys, I found patterns to explain ways of playing the piano with an 8:8 ratio which gives purpose to why the piano has 88 keys on it. Purpose: The first purpose is to enable piano teachers and music students to benefit from understanding how to play piano and be…

  5. Dynamic Nuclear Polarization NMR of Low-? Nuclei: Structural Insights into Hydrated Yttrium-Doped BaZrO3.

    PubMed

    Blanc, Frédéric; Sperrin, Luke; Lee, Daniel; Dervi?o?lu, R?za; Yamazaki, Yoshihiro; Haile, Sossina M; De Paëpe, Gaël; Grey, Clare P

    2014-07-17

    We demonstrate that solid-state NMR spectra of challenging nuclei with a low gyromagnetic ratio such as yttrium-89 can be acquired quickly with indirect dynamic nuclear polarization (DNP) methods. Proton to (89)Y cross polarization (CP) magic angle spinning (MAS) spectra of Y(3+) in a frozen aqueous solution were acquired in minutes using the AMUPol biradical as a polarizing agent. Subsequently, the detection of the (89)Y and (1)H NMR signals from technologically important hydrated yttrium-doped zirconate ceramics, in combination with DFT calculations, allows the local yttrium and proton environments present in these protonic conductors to be detected and assigned to different hydrogen-bonded environments. PMID:26277811

  6. TGF-? Suppresses Ift88 Expression in Chondrocytic ATDC5 Cells.

    PubMed

    Kawasaki, Makiri; Ezura, Yoichi; Hayata, Tadayoshi; Notomi, Takuya; Izu, Yayoi; Noda, Masaki

    2015-11-01

    Ift88 is an intraflagella transport protein, critical for the cilium, and has been shown to be required for the maintenance of chondrocytes and cartilage. However, how Ift88 is controlled by cytokines that play a role in osteoarthritis is not well understood. Therefore, we examined the effects of TGF-? on the expression of Ift88. We used ATDC5 cells as chondrocytes and analyzed the effects of TGF-? on gene expression. TGF-? treatment suppresses the levels of Ift88 mRNA in a dose-dependent manner starting from as low as 0.5?ng/mL and reaching the nadir at around 2?ng/mL. TGF-? treatment also suppresses the protein levels of Ift88. TGF-? suppression of Ift88 is still observed when the cells are cultured in the presence of a transcriptional inhibitor while the TGF-? suppression is weakened in the presence of a protein synthesis inhibitor, cycloheximide. TGF-? treatment suppresses the levels of Ift88 mRNA stability suggesting the presence of posttranscriptional regulation.?TGF-? treatment reduces the number of cilia positive cells and suppresses average length of cilia. Knockdown of Ift88 by siRNA enhances TGF-?-induced increase in type II collagen mRNA expression in ATDC5 cells revealing the suppressive role of Ift88 on TGF-?-induced regulation of extracellular matrix protein expression. TGF-? also suppresses Ift88 mRNA expression in primary culture of rib chondrocytes. These data indicate that TGF-? regulates Ift88 gene expression at least in part via posttrascriptional manner. PMID:25828538

  7. STS-88 Mission Commander Robert D. Cabana suits up for TCDT

    NASA Technical Reports Server (NTRS)

    1998-01-01

    STS-88 Mission Commander Robert D. Cabana suits up in the Operations and Checkout Building prior, as part of flight crew equipment fit check, to his trip to Launch Pad 39A. He is helped by suit tech (right) Lloyd Armintor and an unidentified KSC worker. The crew are at KSC to participate in the Terminal Countdown Demonstration Test (TCDT) which includes mission familiarization activities, emergency egress training, and the simulated main engine cut-off exercise. This is Cabana's fourth space flight. Mission STS-88 is targeted for launch on Dec. 3, 1998. It is the first U.S. flight for the assembly of the International Space Station and will carry the Unity connecting module.

  8. Synthesis and characterization of amorphous yttrium oxide layers by metal organic chemical solution deposition

    NASA Astrophysics Data System (ADS)

    Martynova, I.; Tsymbarenko, D.; Kamenev, A.; Kuzmina, N.; Kaul, A.

    2014-02-01

    The Solution Deposition Planarization method was successfully used for smoothing Ni-alloy tapes with initial surface roughness of 26.7 nm (on 40×40 ?m2 area) and 12.6 nm (on 5×5 ?m2 area). New precursor solutions were prepared from yttrium acetate and diethylenetriamine or ethylenediamine in MeOH and i-PrOH-alcohols with different viscosities. Using those solutions yttria films with the residual roughness Sa=0.4 nm (on 5×5 ?m2 area) and Sa=7.6 nm (on 40×40 ?m2 area) were deposited on the Ni-alloy tapes.

  9. Optical fiber-based gamma-ray spectroscopy with cerium-doped lutetium yttrium orthosilicate crystal

    NASA Astrophysics Data System (ADS)

    Han, Ki-Tek; Yoo, Wook Jae; Seo, Jeong Ki; Shin, Sang Hun; Jeon, Dayeong; Hong, Seunghan; Cho, Seunghyun; Moon, Joo Hyun; Lee, Bongsoo

    2013-03-01

    A fiber-optic radiation sensor (FORS), which is composed of an inorganic scintillator, a plastic optical fiber (POF), a photomultiplier tube (PMT), and a multichannel analyzer (MCA), was developed for gamma-ray energy spectroscopy. In this study, we selected a cerium-doped lutetium yttrium orthosilicate (LYSO:Ce) as the sensitive element of the FORS and found that LYSO:Ce with dimensions of 3 × 3 × 15mm3 gives the best performance in obtaining a gammaray energy spectrum. The FORS allows us to measure the energy spectra of Co-60, Na-22, and Cs-137.

  10. Electronic structure and elastic properties of scandium carbide and yttrium carbide: A first principles study

    NASA Astrophysics Data System (ADS)

    Maibam, Jameson; Indrajit Sharma, B.; Bhattacharjee, Ramendu; Thapa, R. K.; Brojen Singh, R. K.

    2011-11-01

    We have studied the electronic, structural, and elastic properties of scandium carbide and yttrium carbide by means of accurate first principles total energy calculations using the full-potential linearized plane wave method (FP-LAPW). We have used the generalized gradient approximation (GGA) for the exchange and correlation potential. Volume optimization, energy band structure, and density of states (DOS) of the systems are presented. The second order elastic constants have been calculated and other related quantities such as the Zener anisotropy factor, Poisson's ratio, Young's modulus, Kleinman parameter, Debye temperature, and sound velocities have been determined. The band gap calculation shows that YC is relatively more ionic than ScC.

  11. Jet-cooled optical spectroscopy of yttrium monocarbide. Evidence for a 4Pi i ground state

    NASA Astrophysics Data System (ADS)

    Simard, Benoit; Hackett, Peter A.; Balfour, Walter J.

    1994-11-01

    The first observation of yttrium monocarbide, YC, is reported. A number of vibronic bands have been observed in the 635-650 nm region. Four of these bands have been investigated at a resolution of 120 MHz, and rotational constants have been derived. The bands originate from a common lower Omega = 5/2 state which, on the basis of recent ab initio calculations (Shim, Pelino and Gingerich (1992), is the lowest lying spin-orbit component of the ground 4Pi i state. This state arises from a ... 10 sigma 2 11 sigma 1 12 sigma 1 5 pi 3 electron configuration. The nature of the excited states is also discussed.

  12. Positron lifetime measurements of hydrogen passivation of cation vacancies in yttrium aluminum oxide garnets

    NASA Astrophysics Data System (ADS)

    Selim, F. A.; Varney, C. R.; Tarun, M. C.; Rowe, M. C.; Collins, G. S.; McCluskey, M. D.

    2013-11-01

    A charge compensation mechanism is proposed for cation vacancy defects in complex oxides based on positron lifetime measurements, infrared spectroscopy, and composition analysis. Defects were characterized in samples of yttrium aluminum garnet grown in O2 or Ar. However, no positron trapping was detected in samples grown in H2. This is attributed to decoration of cation vacancies with hydrogen, thereby passivating charges of vacancies that otherwise function as positron traps. Infrared spectroscopy gave direct evidence of the presence of hydrogen. Passivation of cation vacancies with hydrogen is proposed as an important mechanism for charge compensation in the defect physics of oxides.

  13. Spin waves in micro-structured yttrium iron garnet nanometer-thick films

    NASA Astrophysics Data System (ADS)

    Jungfleisch, Matthias B.; Zhang, Wei; Jiang, Wanjun; Chang, Houchen; Sklenar, Joseph; Wu, Stephen M.; Pearson, John E.; Bhattacharya, Anand; Ketterson, John B.; Wu, Mingzhong; Hoffmann, Axel

    2015-05-01

    We investigated the spin-wave propagation in a micro-structured yttrium iron garnet waveguide of 40 nm thickness. Utilizing spatially-resolved Brillouin light scattering microscopy, an exponential decay of the spin-wave amplitude of (10.06 ± 0.83) ?m was observed. This leads to an estimated Gilbert damping constant of ?=(8.79 ±0.73 )×10-4 , which is larger than damping values obtained through ferromagnetic resonance measurements in unstructured films. The theoretically calculated spatial interference of waveguide modes was compared to the spin-wave pattern observed experimentally by means of Brillouin light scattering spectroscopy.

  14. Thickness- and temperature-dependent magnetodynamic properties of yttrium iron garnet thin films

    SciTech Connect

    Haidar, M. Ranjbar, M.; Balinsky, M.; Dumas, R. K.; Khartsev, S.; Åkerman, J.

    2015-05-07

    The magnetodynamical properties of nanometer-thick yttrium iron garnet films are studied using ferromagnetic resonance as a function of temperature. The films were grown on gadolinium gallium garnet substrates by pulsed laser deposition. First, we found that the damping coefficient increases as the temperature increases for different film thicknesses. Second, we found two different dependencies of the damping on film thickness: at room temperature, the damping coefficient increases as the film thickness decreases, while at T?=?8?K, we find the damping to depend only weakly on the thickness. We attribute this behavior to an enhancement of the relaxation of the magnetization by impurities or defects at the surfaces.

  15. Erbium-doped yttrium aluminium garnet ablative laser treatment for endogenous ochronosis.

    PubMed

    Chaptini, Cassandra; Huilgol, Shyamala C

    2015-08-01

    Ochronosis is a rare disease characterised clinically by bluish-grey skin discolouration and histologically by yellow-brown pigment deposits in the dermis. It occurs in endogenous and exogenous forms. Endogenous ochronosis, also known as alkaptonuria, is an autosomal recessive disease of tyrosine metabolism, resulting in the accumulation and deposition of homogentisic acid in connective tissue. We report a case of facial endogenous ochronosis and coexistent photodamage, which was successfully treated with erbium-doped yttrium aluminium garnet laser resurfacing and deep focal point treatment to remove areas of residual deep pigment. PMID:25302636

  16. Fluorine contamination in yttrium-doped barium zirconate film deposited by atomic layer deposition

    SciTech Connect

    An Jihwan; Beom Kim, Young; Sun Park, Joong; Hyung Shim, Joon; Guer, Turgut M.; Prinz, Fritz B.

    2012-01-15

    The authors have investigated the change of chemical composition, crystallinity, and ionic conductivity in fluorine contaminated yttrium-doped barium zirconate (BYZ) fabricated by atomic layer deposition (ALD). It has been identified that fluorine contamination can significantly affect the conductivity of the ALD BYZ. The authors have also successfully established the relationship between process temperature and contamination and the source of fluorine contamination, which was the perfluoroelastomer O-ring used for vacuum sealing. The total removal of fluorine contamination was achieved by using all-metal sealed chamber instead of O-ring seals.

  17. The effect of yttrium and thorium on the oxidation behavior of Ni-Cr-Al alloys

    NASA Technical Reports Server (NTRS)

    Kumar, A.; Douglass, D. L.; Nasrallah, M.

    1974-01-01

    The investigation reported included a determination of the optimum composition of a Ni-Cr-Al ternary alloy with respect to oxidation resistance and minimum film-spalling tendencies. Yttrium and thorium in small amounts were added to the ternary alloy and an investigation of the oxidation mechanism and the oxide scale adherence was conducted. It was found that the oxidation mechanism of Ni-Cr-Al ternary alloys depends upon the composition of the alloy as well as the time, oxygen pressure, and temperature of oxidation.

  18. High Resolution Electron Microscopy Study of Phase Composition of Yttrium Oxide Nanoparticles

    NASA Astrophysics Data System (ADS)

    Mamtsev, D. I.; Murzakaev, A. M.

    2015-10-01

    Phase composition and structural features of the yttrium oxide nanoparticles produced by laser evaporation are studied. Initial and annealed samples were examined. Initial samples contain several phases. The phase composition is found to depend on the particle size. Small crystallites (5-12 nm) possess a FCC lattice (Fm-3m) and larger ones have a BCC lattice (Ia-3). Annealing at temperatures T = 930-1000°C allowed to obtain samples containing only particles with the BCC lattice that may be used for the manufacture of transparent ceramics.

  19. Yttrium-90 microsphere radioembolotherapy in a patient with spontaneously ruptured hepatocellular carcinoma.

    PubMed

    Winokur, Ronald S; Talenfeld, Adam D; Mozley, P David; Madoff, David C

    2016-01-01

    Spontaneous rupture of hepatocellular carcinoma (HCC) is a potentially fatal presentation of the disease. Although many options for treatment exist, Yttrium-90 transcatheter arterial radioembolization has not previously been reported. We report a case of a 92-year-old woman found to have a ruptured HCC treated with radioembolization that showed no viable tumor and no extrahepatic disease at 2 years. While further studies are warranted, this patient's clinical course may suggest that radioembolization may be an additional palliative treatment option in these patients. PMID:26365871

  20. Spin waves in micro-structured yttrium iron garnet nanometer-thick films

    SciTech Connect

    Jungfleisch, Matthias B. Zhang, Wei; Jiang, Wanjun; Wu, Stephen M.; Pearson, John E.; Bhattacharya, Anand; Hoffmann, Axel; Chang, Houchen; Wu, Mingzhong; Sklenar, Joseph; Ketterson, John B.

    2015-05-07

    We investigated the spin-wave propagation in a micro-structured yttrium iron garnet waveguide of 40?nm thickness. Utilizing spatially-resolved Brillouin light scattering microscopy, an exponential decay of the spin-wave amplitude of (10.06?±?0.83) ?m was observed. This leads to an estimated Gilbert damping constant of ?=(8.79±0.73)×10{sup ?4}, which is larger than damping values obtained through ferromagnetic resonance measurements in unstructured films. The theoretically calculated spatial interference of waveguide modes was compared to the spin-wave pattern observed experimentally by means of Brillouin light scattering spectroscopy.

  1. Magnetic and high frequency properties of nanogranular CoFe-yttrium-doped zirconia films

    SciTech Connect

    Hao, Guijie Tang, Xiaoli; Zhang, Huaiwu; Zhang, Dainan

    2014-05-07

    Soft magnetic nanogranular FeCo-Yttrium-doped Zirconia thin films were fabricated using RF magnetron sputtering at different sputtering power. It was found that film electrical resistivity (?) decreased steeply with the increase of sputtering power, while both saturation magnetization (4?M{sub s}) and natural ferromagnetic resonant frequency (ƒ{sub r}) increased with the sputtering power ascending from 100?W to 200?W, but decreased when sputtering power exceeded 200?W. X-ray diffraction analysis and transmission electron microscopy confirmed that the films were nanocrystalline/amorphous composites. A saturation magnetization as high as 15.4 kGs and a ferromagnetic resonance frequency above 3?GHz were obtained.

  2. Evidence of dilute ferromagnetism in rare-earth doped yttrium aluminium garnet

    NASA Astrophysics Data System (ADS)

    Farr, Warrick G.; Goryachev, Maxim; le Floch, Jean-Michel; Bushev, Pavel; Tobar, Michael E.

    2015-09-01

    This work demonstrates strong coupling regime between an erbium ion spin ensemble and microwave hybrid cavity-whispering gallery modes in a yttrium aluminium garnet dielectric crystal. Coupling strengths of 220 MHz and mode quality factors in excess of 106 are demonstrated. Moreover, the magnetic response of high-Q modes demonstrates behaviour which is unusual for paramagnetic systems. This behaviour includes hysteresis and memory effects. Such qualitative change of the system's magnetic field response is interpreted as a phase transition of rare earth ion impurities. This phenomenon is similar to the phenomenon of dilute ferromagnetism in semiconductors. The clear temperature dependence of the phenomenon is demonstrated.

  3. Yttrium Iron Garnet Nanocrystals in Porous Glass of ~10 nm Pore Diameter

    NASA Astrophysics Data System (ADS)

    Taketomi, Susamu; Ohuchi, Fumio S.

    1998-03-01

    We have previously reported the quantum size effect in light absorption spectra of magnetite and yttrium iron garnet (YIG) nanocrystals [1, 2]. In this paper, we have prepared a quantum dot structure by introducing the YIG nanocrystals into pores of the thirsty glass [3]. We report the preparation method and the optical properties of these materials. [1] S. Taketomi, H. Takahashi, N. Inaba and H. Miyajima, J. Phys. Soc. Jpn. 60, 3426 (1991). [2] S. Taketomi, K. Kawaguchi, Y. Otani, H. Miyajima, K. Kawasaki, and Y. Ozaki, IEEE Trans. Magn. 30, 945 (1994). [3] W. Haller, in Solid Phase Biochemistry edited by W. H. Scouten ( John Wiley, Sons, New York), Chap. 2.

  4. Process for the separation and purification of yttrium-90 for medical applications

    DOEpatents

    Horwitz, P.E.; Dietz, M.L.

    1994-11-29

    An extraction chromatographic method for the preparation of [sup 90]Y of high chemical and radiochemical purity is disclosed. After an initial purification of a [sup 90]Sr stock solution and a suitable period of [sup 90]Y ingrowth, the solution is passed through a series of strontium-selective chromatographic columns, each of which lowers the [sup 90]Sr content of the mixture by a factor of about 10[sup 3]. The [sup 90]Y remaining is freed from any residual [sup 90]Sr, from its [sup 90]Zr daughter, and from any remaining impurities by passing the sample through a final column designed to selectively retain yttrium. 5 figures.

  5. Spin-wave excitation and propagation in microstructured waveguides of yttrium iron garnet/Pt bilayers

    SciTech Connect

    Pirro, P.; Chumak, A. V.; Lägel, B.; Leven, B.; Hillebrands, B.; Brächer, T.; Graduate School Materials Science in Mainz, Gottlieb-Daimler-Strasse 47, D-67663 Kaiserslautern ; Dubs, C.; Surzhenko, O.; Görnert, P.

    2014-01-06

    We present an experimental study of spin-wave excitation and propagation in microstructured waveguides consisting of a 100?nm thick yttrium iron garnet/platinum (Pt) bilayer. The life time of the spin waves is found to be more than an order of magnitude higher than in comparably sized metallic structures, despite the fact that the Pt capping enhances the Gilbert damping. Utilizing microfocus Brillouin light scattering spectroscopy, we reveal the spin-wave mode structure for different excitation frequencies. An exponential spin-wave amplitude decay length of 31??m is observed which is a significant step towards low damping, insulator based micro-magnonics.

  6. Process for the separation and purification of yttrium-90 for medical applications

    DOEpatents

    Horwitz, Philip E. (Naperville, IL); Dietz, Mark L. (Evanston, IL)

    1994-01-01

    An extraction chromatographic method for the preparation of .sup.90 Y of high chemical and radiochemical purity is disclosed. After an initial purification of a .sup.90 Sr stock solution and a suitable period of .sup.90 Y ingrowth, the solution is passed through a series of strontium-selective chromatographic columns, each of which lowers the .sup.90 Sr content of the mixture by a factor of about 10.sup.3. The .sup.90 Y remaining is freed from any residual .sup.90 Sr, from its .sup.90 Zr daughter, and from any remaining impurities by passing the sample through a final column designed to selectively retain yttrium.

  7. Enhanced UV and suppressed defect related emission in yttrium doped zinc oxide

    SciTech Connect

    Sharma, Vikas; Vyas, Rishi; Sachdev, K.; Kumar, Parmod Malik, Hitendra K.; Rana, Geeta; Asokan, K.

    2014-04-24

    Yttrium doped ZnO (YZO) synthesized through conventional solid state reaction method using ZnO and Y{sub 2}O{sub 3} as starting material. The formation of YZO compounds were confirmed by X-ray diffraction and Raman spectroscopy. Photoluminescence measurements revealed an enhanced ultra-violet (UV) and suppressed defect related emission in YZO which is due to reduction in the concentration of the defects related to oxygen interstitials (O{sub i}) and zinc vacancy (V{sub Zn}) of ZnO.

  8. A process for the separation and purification of yttrium-90 for medical applications

    DOEpatents

    Horwitz, P.E.; Dietz, M.L.

    1993-01-01

    An extraction chromatographic method for the preparation of {sup 90}Y of high chemical and radiochemical purity is disclosed. After an initial purification of a {sup 90}Sr stock solution and a suitable period of {sup 90}Y ingrowth, the solution is passed through a series of strontium-selective chromatographic columns, each of which lowers the {sup 90}Sr content of the mixture by a factor of about 10{sup 3}. The {sup 90}Y remaining is freed from any residual {sup 90}Sr, from its {sup 90}Zr daughter, and from any remaining impurities by passing the sample through a final column designed to selectively retain yttrium.

  9. Effect of yttrium additions on the tensile properties and hardness of an iron-nickel-chromium alloy. [LMFBR

    SciTech Connect

    Shah-Khan, M.Z.

    1981-10-01

    Results of the research work show that the addition of 0.1% yttrium does not significantly change the mechanical properties of the AL1 alloy with temperature (even though the yttrium-doped samples did show a slight increase in yield stress and hardness for tests above 700/sup 0/C); the room temperature strength of the undoped AL1 alloy increases upon annealing at temperatures above 600/sup 0/C; and the room temperature uniform and fracture strains of the undoped AL1 alloy decrease upon annealing at temperatures above 600/sup 0/C.

  10. Magneto-optical properties of cerium substituted yttrium iron garnet films with reduced thermal budget for monolithic photonic integrated circuits.

    PubMed

    Goto, Taichi; Onba?l?, Mehmet C; Ross, C A

    2012-12-17

    Thin films of polycrystalline cerium substituted yttrium iron garnet (CeYIG) were grown on an yttrium iron garnet (YIG) seed layer on Si and Si-on-insulator substrates by pulsed laser deposition, and their optical and magneto-optical properties in the near-IR region were measured. A YIG seed layer of ~30 nm thick processed by rapid thermal anneal at 800°C provided a virtual substrate to promote crystallization of the CeYIG. The effect of the thermal budget of the YIG/CeYIG growth process on the film structure, magnetic and magnetooptical properties was determined. PMID:23263087

  11. Histological changes in nontumoral liver secondary to radioembolization of hepatocellular carcinoma with yttrium 90-impregnated microspheres: report of two cases.

    PubMed

    Dhingra, Sadhna; Schwartz, Myron; Kim, Edward; Mabel Ko, Huaibin; Ward, Stephen C; Fiel, M Isabel; Thung, Swan N

    2014-11-01

    Transarterial radioembolization (TARE) with yttrium-90 is a minimally invasive locoregional therapy for hepatocellular carcinoma (HCC), and involves selective delivery of glass or resin microspheres impregnated with radioactive yttrium-90 into small arteries preferentially supplying the tumor for tumoricidal effect thus sparing the nontumoral liver, or into lobar artery to induce atrophy and contralateral hypertrophy. Clinically, post-TARE a small proportion of cases develop radioembolization-induced liver disease. Histological changes of TARE on nontumoral liver parenchyma have not been well characterized. Herein, we report two cases of liver resections for HCC post-TARE, and describe the histological changes in nontumoral liver parenchyma. PMID:25369308

  12. Effects of surface pretreatments on interface structure during formation of ultra-thin yttrium silicate dielectric films on silicon

    NASA Astrophysics Data System (ADS)

    Chambers, J. J.; Busch, B. W.; Schulte, W. H.; Gustafsson, T.; Garfunkel, E.; Wang, S.; Maher, D. M.; Klein, T. M.; Parsons, G. N.

    2001-09-01

    X-ray photoelectron spectroscopy (XPS) and medium energy ion scattering (MEIS) are used to determine chemical bonding and composition of ultra-thin films of mixed yttrium, silicon, and oxygen, formed by oxidation of metal on clean and pre-treated silicon. XPS and MEIS analyses indicate that oxidation of yttrium on bare silicon results in a fully oxidized film with a significant fraction of Y-O-Si bonding. The mixed Y-O-Si structure results from the relatively rapid reaction between Y and the Si substrate to form yttrium silicide, followed by oxidation. The effect of various silicon pretreatments, including in situ oxidation and nitridation, on bulk and interface film composition are also examined. Transmission electron microscopy (TEM) of 40 Å thick films indicates that the yttrium silicate films are amorphous with uniform contrast throughout the layer. MEIS shows evidence for a graded metal concentration in the dielectric near the silicon interface, with uniform oxygen concentration (consistent with full oxidation) throughout the film. Angle resolved XPS (ARXPS) shows no significant signal related to Si +4, as would be expected from a substantial SiO 2 interface layer. Capacitance-voltage analysis demonstrates that a ˜10 Å equivalent oxide thickness can be achieved. The effects of ultra-thin silicon oxide, nitrided-oxide and nitrided silicon interfaces on silicon consumption during the oxidation of yttrium are investigated. When yttrium is deposited on a thin (˜10 Å) SiO 2 film and oxidized, a yttrium silicate film is formed with bonding and composition similar to films formed on bare silicon. However, when the interface is a thin nitride, the silicon consumption rate is significantly reduced, and the resulting film composition is closer to Y 2O 3. The consumption of the silicon substrate by metal is shown to occur during oxidation and during vacuum annealing of yttrium on silicon. The relatively rapid formation of metal-silicon bonds suggests that metal-silicon structures may also be important reactive intermediates in silicon/dielectric interface formation reactions during chemical vapor deposition. In addition to thermodynamic stability, understanding the relative rates of elementary reaction steps in film formation is critical to control composition and structure at the dielectric/Si interface.

  13. Study of structural and spectral properties of neodymium-doped lead-yttrium oxyfluoride nano-glass-ceramics

    NASA Astrophysics Data System (ADS)

    Bibik, A. Yu.; Nuryev, R. K.; Aseev, V. A.; Kolobkova, E. V.; Nikonorov, N. V.

    2015-06-01

    Processes of nanocrystalline phase formation in transparent yttrium oxyfluoride nano-glass-ceramics doped with neodymium ions are studied. An optimal heat treatment regime for a given glass composition is determined using differential thermal analysis (DTA). Glasses are heat-treated for 30, 60, and 120 min; the sizes of crystals are calculated, and the unit cell parameters are determined. The physicochemical and spectral properties of yttrium oxyfluoride glasses doped with neodymium ions, as well as of nano-glass-ceramics based on these glasses, are studied.

  14. 33 CFR 88.11 - Law enforcement vessels.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Law enforcement vessels. 88.11... NAVIGATION RULES ANNEX V: PILOT RULES § 88.11 Law enforcement vessels. (a) Law enforcement vessels may... light must be located so that it does not interfere with the visibility of the vessel's...

  15. Checklist for enrolling in Independent Research, PSYC 88,

    E-print Network

    Bucci, David J.

    Checklist for enrolling in Independent Research, PSYC 88, for library research __________________________________________________ __________________ please print your name date checklist & materials submitted This checklist will guide you in preparing of the above check boxes cannot be checked, permission for 88 cannot be approved. Submit the Checklist

  16. 18 CFR 401.88 - Findings, report and Commission review.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 18 Conservation of Power and Water Resources 2 2011-04-01 2011-04-01 false Findings, report and Commission review. 401.88 Section 401.88 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION ADMINISTRATIVE MANUAL RULES OF PRACTICE AND PROCEDURE Administrative and Other Hearings §...

  17. 38 CFR 4.88a - Chronic fatigue syndrome.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2013-07-01 2013-07-01 false Chronic fatigue syndrome. 4.88a Section 4.88a Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and...

  18. 38 CFR 4.88a - Chronic fatigue syndrome.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2012-07-01 2012-07-01 false Chronic fatigue syndrome. 4.88a Section 4.88a Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and...

  19. 38 CFR 4.88a - Chronic fatigue syndrome.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2014-07-01 2014-07-01 false Chronic fatigue syndrome. 4.88a Section 4.88a Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and...

  20. 38 CFR 4.88a - Chronic fatigue syndrome.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2011-07-01 2011-07-01 false Chronic fatigue syndrome. 4.88a Section 4.88a Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE FOR RATING DISABILITIES Disability Ratings Infectious Diseases, Immune Disorders and...

  1. 33 CFR 88.15 - Lights on dredge pipelines.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Lights on dredge pipelines. 88.15... NAVIGATION RULES ANNEX V: PILOT RULES § 88.15 Lights on dredge pipelines. Dredge pipelines that are floating... than 10 meters apart where the pipeline crosses a navigable channel. Where the pipeline does not...

  2. 33 CFR 88.15 - Lights on dredge pipelines.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Lights on dredge pipelines. 88.15... NAVIGATION RULES ANNEX V: PILOT RULES § 88.15 Lights on dredge pipelines. Dredge pipelines that are floating... than 10 meters apart where the pipeline crosses a navigable channel. Where the pipeline does not...

  3. ISI ReprintSeries ISIIRS-88-210

    E-print Network

    Robins, Gabriel

    ISI ReprintSeries ISIIRS-88-210 June1988 University ofSouthern California Gabriel Robins Applications of the ISI Grapher Reprinted from Proceedingsof the ArtificialIntelligenceand Advanced Computer PERFORMING ORGANIZATION REPORT NUMBER(S) 5. MONITORING ORGANIZATION REPORT NUMBER(S) ISI/RS-88

  4. ISI TechnicalManual ISI/TM-88-197

    E-print Network

    Robins, Gabriel

    ISI TechnicalManual ISI/TM-88-197 February1988 University ofSouthern California Gabriel Robins %% ... ... .. The ISI Grapher Manual INFORMATION SCIENCES 213/822-1511 INSTITUTEJ f-"-676 292-t5466Admiralty Way. MONITORING ORGANIZATION REPORT NUMBER(S) ISI/TM-88-197 6a. NAME OF PERFORMING ORGANIZATION USC

  5. 45 CFR 88.5 - Written certification of compliance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... such at the Department's discretion. I further certify that, except as provided in 45 CFR 88.5(e), the... under this instrument, and will require, except as provided in 45 CFR 88.5(e), such sub-recipient to... perform or assist in the performance of any sterilization procedure or abortion if his performance...

  6. 33 CFR 88.15 - Lights on dredge pipelines.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Lights on dredge pipelines. 88.15... NAVIGATION RULES ANNEX V: PILOT RULES § 88.15 Lights on dredge pipelines. Dredge pipelines that are floating or supported on trestles shall display the following lights at night and in periods of...

  7. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Lights on moored barges. 88.13... NAVIGATION RULES ANNEX V: PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  8. 33 CFR 88.15 - Lights on dredge pipelines.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Lights on dredge pipelines. 88.15... NAVIGATION RULES ANNEX V: PILOT RULES § 88.15 Lights on dredge pipelines. Dredge pipelines that are floating or supported on trestles shall display the following lights at night and in periods of...

  9. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Lights on moored barges. 88.13... NAVIGATION RULES ANNEX V: PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  10. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Lights on moored barges. 88.13... NAVIGATION RULES ANNEX V: PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  11. 33 CFR 88.15 - Lights on dredge pipelines.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Lights on dredge pipelines. 88.15... NAVIGATION RULES ANNEX V: PILOT RULES § 88.15 Lights on dredge pipelines. Dredge pipelines that are floating or supported on trestles shall display the following lights at night and in periods of...

  12. 40 CFR 86.603-88 - Test orders.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 19 2014-07-01 2014-07-01 false Test orders. 86.603-88 Section 86.603... New Light-Duty Vehicles, Light-Duty Trucks, and Heavy-Duty Vehicles § 86.603-88 Test orders. (a) The Administrator will require any testing under this subpart by means of a test order addressed to the...

  13. 40 CFR 86.603-88 - Test orders.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 20 2012-07-01 2012-07-01 false Test orders. 86.603-88 Section 86.603... Auditing of New Light-Duty Vehicles, Light-Duty Trucks, and Heavy-Duty Vehicles § 86.603-88 Test orders. (a) The Administrator will require any testing under this subpart by means of a test order addressed...

  14. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Lights on moored barges. 88.13... NAVIGATION RULES ANNEX V: PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  15. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Lights on moored barges. 88.13... NAVIGATION RULES ANNEX V: PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  16. 40 CFR 745.88 - Recognized test kits.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Recognized test kits. 745.88 Section... Renovation § 745.88 Recognized test kits. (a) Effective June 23, 2008, EPA recognizes the test kits that have... publicizes its recognition of the first test kit that meets both the negative response and positive...

  17. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 2014-07-01 false Lights on moored barges. 88.13...PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  18. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 2013-07-01 false Lights on moored barges. 88.13...PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  19. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 2011-07-01 false Lights on moored barges. 88.13...PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  20. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 2012-07-01 false Lights on moored barges. 88.13...PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  1. 33 CFR 88.13 - Lights on moored barges.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 2010-07-01 false Lights on moored barges. 88.13...PILOT RULES § 88.13 Lights on moored barges. (a) The following barges shall display at night and if practicable in periods of restricted visibility the lights described in paragraph...

  2. 38 CFR 4.88a - Chronic fatigue syndrome.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Chronic fatigue syndrome. 4.88a Section 4.88a Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS SCHEDULE... percent of the usual level for at least six months; and (2) the exclusion, by history,...

  3. 28 CFR 8.8 - Advertisement and declaration of forfeiture.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... forfeiture. 8.8 Section 8.8 Judicial Administration DEPARTMENT OF JUSTICE FBI FORFEITURE AUTHORITY FOR... (FBI) within 20 days from the date of the first publication of the notice a claim to such property and... shall, after finding the documents in proper form and the sureties satisfactory, transmit the...

  4. 28 CFR 8.8 - Advertisement and declaration of forfeiture.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... forfeiture. 8.8 Section 8.8 Judicial Administration DEPARTMENT OF JUSTICE FBI FORFEITURE AUTHORITY FOR... (FBI) within 20 days from the date of the first publication of the notice a claim to such property and... shall, after finding the documents in proper form and the sureties satisfactory, transmit the...

  5. 40 CFR 86.1343-88 - Calculations; particulate exhaust emissions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 19 2011-07-01 2011-07-01 false Calculations; particulate exhaust emissions. 86.1343-88 Section 86.1343-88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES (CONTINUED) Emission Regulations for...

  6. 40 CFR 86.1343-88 - Calculations; particulate exhaust emissions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 19 2010-07-01 2010-07-01 false Calculations; particulate exhaust emissions. 86.1343-88 Section 86.1343-88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES (CONTINUED) Emission Regulations for...

  7. 40 CFR 86.1343-88 - Calculations; particulate exhaust emissions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 20 2012-07-01 2012-07-01 false Calculations; particulate exhaust emissions. 86.1343-88 Section 86.1343-88 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES (CONTINUED) Emission Regulations for...

  8. 45 CFR 88.5 - Written certification of compliance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... such at the Department's discretion. I further certify that, except as provided in 45 CFR 88.5(e), the... under this instrument, and will require, except as provided in 45 CFR 88.5(e), such sub-recipient to... for, abortion. _ subject any institutional or individual health care entity to discrimination on...

  9. 27 CFR 479.88 - Special (occupational) taxpayers.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 3 2014-04-01 2014-04-01 false Special (occupational) taxpayers. 479.88 Section 479.88 Alcohol, Tobacco Products, and Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE...

  10. 27 CFR 479.88 - Special (occupational) taxpayers.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 3 2010-04-01 2010-04-01 false Special (occupational) taxpayers. 479.88 Section 479.88 Alcohol, Tobacco Products, and Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE...

  11. 27 CFR 479.88 - Special (occupational) taxpayers.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 3 2012-04-01 2010-04-01 true Special (occupational) taxpayers. 479.88 Section 479.88 Alcohol, Tobacco Products, and Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE...

  12. 27 CFR 479.88 - Special (occupational) taxpayers.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 3 2013-04-01 2013-04-01 false Special (occupational) taxpayers. 479.88 Section 479.88 Alcohol, Tobacco Products, and Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE...

  13. 27 CFR 479.88 - Special (occupational) taxpayers.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 3 2011-04-01 2010-04-01 true Special (occupational) taxpayers. 479.88 Section 479.88 Alcohol, Tobacco Products, and Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE...

  14. 1987-88 Degrees Conferred Report. Massachusetts Public Higher Education.

    ERIC Educational Resources Information Center

    Massachusetts State Board of Regents of Higher Education, Boston.

    The results of a survey of all degrees conferred in the state of Massachusetts during 1987-88 are presented. Statistics include the following: the public colleges and universities in Massachusetts conferred over 24,000 degree and certificates during the 1987-88 academic year; 58% of the people receiving degrees were women; only 6.1% of the degrees…

  15. Characterization of Quasi-monoenergetic Neutron Beams from Deuteron Breakup at the 88-Inch Cyclotron

    NASA Astrophysics Data System (ADS)

    Bleuel, Darren; McMahan, Margaret; Ahle, Larry; Bernstein, Lee; Heilbronn, Lawrence

    2006-04-01

    A neutron irradiation facility is being developed at Lawrence Berkeley National Laboratory's (LBNL's) 88-inch cyclotron to measure neutron cross sections on radioactive targets important to nuclear astrophysics and stockpile stewardship. Quasi-monoenergetic neutron beams are produced in the 10-32 MeV range using the deuteron breakup reaction on various thin targets. Accurate characterization of these beams is needed before cross section measurements may be performed. To determine the neutron spectra produced by the breakup reaction on thin targets, three methods have been used, including activation foil measurements, direct neutron measurement using the time-of-flight technique with a Stilbene detector, and complimentary measurements of the associated protons using STARS, a silicon telescope array. Preliminary results indicate a good outlook for producing quasi-monoenergetic neutron beams with fluxes in the 10^6-8 n/cm^2/s range.

  16. Intestinal epithelium-specific MyD88 signaling impacts host susceptibility to infectious colitis by promoting protective goblet cell and antimicrobial responses.

    PubMed

    Bhinder, Ganive; Stahl, Martin; Sham, Ho Pan; Crowley, Shauna M; Morampudi, Vijay; Dalwadi, Udit; Ma, Caixia; Jacobson, Kevan; Vallance, Bruce A

    2014-09-01

    Intestinal epithelial cells (IECs), including secretory goblet cells, form essential physiochemical barriers that separate luminal bacteria from underlying immune cells in the intestinal mucosa. IECs are common targets for enteric bacterial pathogens, with hosts responding to these microbes through innate toll-like receptors that predominantly signal through the MyD88 adaptor protein. In fact, MyD88 signaling confers protection against several enteric bacterial pathogens, including Salmonella enterica serovar Typhimurium and Citrobacter rodentium. Since IECs are considered innately hyporesponsive, it is unclear whether MyD88 signaling within IECs contributes to this protection. We infected mice lacking MyD88 solely in their IECs (IEC-Myd88(-/-)) with S. Typhimurium. Compared to wild-type (WT) mice, infected IEC-Myd88(-/-) mice suffered accelerated tissue damage, exaggerated barrier disruption, and impaired goblet cell responses (Muc2 and RELM?). Immunostaining revealed S. Typhimurium penetrated the IECs of IEC-Myd88(-/-) mice, unlike in WT mice, where they were sequestered to the lumen. When isolated crypts were assayed for their antimicrobial actions, crypts from IEC-Myd88(-/-) mice were severely impaired in their antimicrobial activity against S. Typhimurium. We also examined whether MyD88 signaling in IECs impacted host defense against C. rodentium, with IEC-Myd88(-/-) mice again suffering exaggerated tissue damage, impaired goblet cell responses, and reduced antimicrobial activity against C. rodentium. These results demonstrate that MyD88 signaling within IECs plays an important protective role at early stages of infection, influencing host susceptibility to infection by controlling the ability of the pathogen to reach and survive at the intestinal mucosal surface. PMID:24958710

  17. Inhibition of myeloid differentiation factor 88 signaling mediated by histidine-grafted poly(?-amino ester) ester nanovector induces donor-specific liver allograft tolerance

    PubMed Central

    Hu, Fanguo; Wang, Hanjie; Zhang, Shuangnan; Peng, Yao; Su, Lin; Chang, Jin; Liu, Gang

    2015-01-01

    Toll-like receptors (TLRs) activate biochemical pathways that evoke activation of innate immunity, which leads to dendritic cell maturation and initiation of adaptive immune responses that provoke allograft rejection. We aimed to prolong allograft survival by selectively inhibiting expression of myeloid differentiation factor 88 (MyD88), which is an essential adaptor in TLR signaling. We designed and synthesized a novel histidine-grafted poly(?-amino ester) (HGPAE) nanovector, which was shown to be safe and efficient both in vitro and in vivo for the delivery of a plasmid containing shRNA targeting MyD88 (pMyD88). We also demonstrated that the pMyD88/HGPAE complex mediated remarkable inhibition of MyD88 expression in rat liver in vivo. We transplanted Dark Agouti rat livers lacking MyD88 as result of transfection with the pMyD88/HGPAE complex into Lewis rats. The recipients survived longer and graft rejection of the donor liver as well as serum levels of IL-2 and IFN-? in the recipient were significantly reduced. PMID:26185440

  18. Sputter target

    DOEpatents

    Gates, Willard G. (Kansas City, MO); Hale, Gerald J. (Overland Park, KS)

    1980-01-01

    The disclosure relates to an improved sputter target for use in the deposition of hard coatings. An exemplary target is given wherein titanium diboride is brazed to a tantalum backing plate using a gold-palladium-nickel braze alloy.

  19. Yttrium scandate thin film as alternative high-permittivity dielectric for germanium gate stack formation

    NASA Astrophysics Data System (ADS)

    Lu, Cimang; Lee, Choong Hyun; Nishimura, Tomonori; Toriumi, Akira

    2015-08-01

    We investigated yttrium scandate (YScO3) as an alternative high-permittivity (k) dielectric thin film for Ge gate stack formation. Significant enhancement of k-value is reported in YScO3 comparing to both of its binary compounds, Y2O3 and Sc2O3, without any cost of interface properties. It suggests a feasible approach to a design of promising high-k dielectrics for Ge gate stack, namely, the formation of high-k ternary oxide out of two medium-k binary oxides. Aggressive scaling of equivalent oxide thickness (EOT) with promising interface properties is presented by using YScO3 as high-k dielectric and yttrium-doped GeO2 (Y-GeO2) as interfacial layer, for a demonstration of high-k gate stack on Ge. In addition, we demonstrate Ge n-MOSFET performance showing the peak electron mobility over 1000 cm2/V s in sub-nm EOT region by YScO3/Y-GeO2/Ge gate stack.

  20. Process for making a titanium diboride-chromium diboride-yttrium titanium oxide ceramic composition

    DOEpatents

    Holcombe, C.E.; Dykes, N.L.

    1992-04-28

    A ceramic composition is described. The ceramic composition consists essentially of from about 84 to 96 w/o titanium diboride, from about 1 to 9 w/o chromium diboride, and from about 3 to about 15 w/o yttrium-titanium-oxide. A method of making the ceramic composition is also described. The method of making the ceramic composition comprises the following steps: Step 1--A consolidated body containing stoichiometric quantities of titanium diboride and chromium diboride is provided. Step 2--The consolidated body is enclosed in and in contact with a thermally insulated package of yttria granules having a thickness of at least 0.5 inches. Step 3--The consolidated body enclosed in the thermally insulated package of yttria granules is heated in a microwave oven with microwave energy to a temperature equal to or greater than 1,900 degrees centigrade to sinter and uniformly disperse yttria particles having a size range from about 1 to about 12 microns throughout the consolidated body forming a densified body consisting essentially of titanium diboride, chromium diboride, and yttrium-titanium-oxide. The resulting densified body has enhanced fracture toughness and hardness. No Drawings

  1. Process for making a titanium diboride-chromium diboride-yttrium titanium oxide ceramic composition

    DOEpatents

    Holcombe, Cressie E. (Knoxville, TN); Dykes, Norman L. (Oak Ridge, TN)

    1992-01-01

    A ceramic composition composition is described. The ceramic composition consists essentially of from about 84 to 96 w/o titanium diboride, from about 1 to 9 w/o chromium diboride, and from about 3 to aobut 15 w/o yttrium-titanium-oxide. A method of making the ceramic composition is also described. The method of making the ceramic composition comprises the following steps: Step 1--A consolidated body containing stoichiometric quantities of titanium diboride and chromium diboride is provided. Step 2--The consolidated body is enclosed in and in contact with a thermally insulated package of yttria granules having a thickness of at least 0.5 inches. Step 3--The consolidated body enclosed in the thermally insulated package of yttria granules is heated in a microwave oven with microwave energy to a temperature equal to or greater than 1,900 degrees centigrade to sinter and uniformly disperse yttria particles having a size range from about 1 to about 12 microns throughout the consolidated body forming a densified body consisting essentially of titanium diboride, chromium diboride, and yttrium-titanium-oxide. The resulting densified body has enhanced fracture toughness and hardness.

  2. Short-term effects of intratracheal installations of yttrium barium copper oxide

    SciTech Connect

    London, J.E.; Newkirk, L.R.; Lehnert, B.E.

    1990-12-01

    Inhalation exposures to the new high-temperature ({Tc}) superconductor (SC) materials can occur during manufacturing and fabrication processes. In this exploratory study, we examined the pulmonary response to the deposition of an yttrium barium copper oxide SC powder. Groups of Sprague-Dawley rats were intratracheally instilled with either 10 mg or 20 mg of SC in phosphate-buffered saline (PBS) or with PBS only. The animals were sacrificed 60 days later for histopathologic assessments of their lungs. Lung lesions in the 10-mg SC group were found mainly in alveolar ducts and proximal alveoli. The lesions consisted of variably sized foci of interstitial thickening involving accumulations of macrophages. These interstitial aggregates were often times centered around one or more extracellular crystals, which, presumably, were retained SC product. Trichome stains also demonstrated the presence of fibrosis in the walls of alveoli surrounding the granulomas. Similar interstitial-macrophage accumulations and fibrosis were observed in rats instilled with 20 mg of SC. However, alveolus like structures lined by ciliated cuboidal epithelium near interstitial granulomas were additionally found in the lungs of some of the animals in this latter group. These results suggest SC material of the yttrium barium copper oxide type may represent a potential exposure hazard to the lung.

  3. Effects of Yttrium-90 selective internal radiation therapy on non-conventional liver tumors

    PubMed Central

    Kuei, Andrew; Saab, Sammy; Cho, Sung-Ki; Kee, Stephen T; Lee, Edward Wolfgang

    2015-01-01

    The liver is a common site of metastasis, with essentially all metastatic malignancies having been known to spread to the liver. Nearly half of all patients with extrahepatic primary cancer have hepatic metastases. The severe prognostic implications of hepatic metastases have made surgical resection an important first line treatment in management. However, limitations such as the presence of extrahepatic spread or poor functional hepatic reserve exclude the majority of patients as surgical candidates, leaving chemotherapy and locoregional therapies as next best options. Selective internal radiation therapy (SIRT) is a form of catheter-based locoregional cancer treatment modality for unresectable tumors, involving trans-arterial injection of microspheres embedded with a radio-isotope Yttrium-90. The therapeutic radiation dose is selectively delivered as the microspheres permanently embed themselves within the tumor vascular bed. Use of SIRT has been conventionally aimed at treating primary hepatic tumors (hepatocellular carcinoma) or colorectal and neuroendocrine metastases. Numerous reviews are available for these tumor types. However, little is known or reviewed on non-colorectal or non-neuroendocrine primaries. Therefore, the aim of this paper is to systematically review the current literature to evaluate the effects of Yttrium-90 radioembolization on non-conventional liver tumors including those secondary to breast cancer, cholangiocarcinoma, ocular and percutaneous melanoma, pancreatic cancer, renal cell carcinoma, and lung cancer. PMID:26217079

  4. In situ high-temperature X-ray diffraction characterization of yttrium-implanted extra low-carbon steel

    SciTech Connect

    Caudron, E.; Buscail, H.; Perrier, S.

    1999-11-01

    Yttrium-implanted and unimplanted extra low-carbon steel samples were analyzed at T = 700 C and under an oxygen partial pressure P{sub O2} = 0.041Pa for 24 h to show the yttrium implantation effect on extra low-carbon steel high-temperature corrosion resistance. Sample oxidation weight gains were studied by thermogravimetry, and structural analyses were performed using in situ high-temperature X-ray diffraction with the same experimental conditions. The aim of this paper is to show the initial nucleation stage of the main compounds induced by oxidation at high temperatures according to the initial sample treatment (yttrium-implanted or unimplanted). The results obtained by in situ high-temperature X-ray diffraction will be compared to those by thermogravimetry to show the existing correlation between weight gain curves and structural studies. Results allow one to understand the improved corrosion resistance of yttrium-implanted extra low-carbon steel at high temperatures.

  5. Identification of spin wave modes in yttrium iron garnet strongly coupled to a co-axial cavity.

    E-print Network

    Lambert, N. J.; Haigh, J. A.; Ferguson, A. J.

    2015-02-05

    We demonstrate, at room temperature, the strong coupling of the fundamental and non-uniform magnetostatic modes of an yttrium iron garnet (YIG) ferrimagnetic sphere to the electromagnetic modes of a co-axial cavity. The well-de ned eld pro le...

  6. Behaviour of zirconium, niobium, yttrium and the rare earth elements in the Thor Lake rare-metal

    E-print Network

    Behaviour of zirconium, niobium, yttrium and the rare earth elements in the Thor Lake rare-metal © Emma Rebecca Sheard, 2010 #12;i ABSTRACT The Thor Lake rare-metal (Zr, Nb, Y, REE, Ta, Be, Ga) deposit and the heavy rare earth elements in the world. Much of the potentially economic mineralization was concentrated

  7. Spectroscopy of 88Y by the (p,d ) Reaction

    SciTech Connect

    Ross, T.J.; Beausang, C.W.; Hughes, R.O.; Scielzo, N.D.; Burke, J.T.; Allmond, James M; Angell, C.T.; Basunia, M.S.; Bleuel, D.L.; Casperson, R.J.; Escher, J.E.; Fallon, P.; Hatarik, R.; Munson, J.; Paschalis, S.; Petri, M.; Phair, L.; Ressler, J.J.

    2012-01-01

    Low-spin, high-excitation energy states in 88Y have been studied using the 89Y(p,d ) reaction. For this experiment a 25 MeV proton beam was incident upon a monoisotopic 89Y target. A silicon telescope array was used to detect deuterons, and coincident rays were detected using a germanium clover array. Most of the known low-excitation-energy low-spin states populated strongly via the (p, d) reaction mechanism are confirmed. Two states are seen for the first time and seven new transitions, including one which bypasses the two low-lying isomeric states, are observed.

  8. Studies on the sensitivity of yttrium by electrothermal atomization from metallic and metal-carbide surfaces of a heated graphite atomizer in atomic absorption spectrometry

    NASA Astrophysics Data System (ADS)

    Wahab, H. S.; Chakrabarti, C. L.

    Atomization of yttrium in tube-type electrothermal atomizers was studied using various atomization surfaces: pyrocoated graphite surface, carbidized graphite surface and tantalum or tungsten metal surfaces. Carbidizing of pyrocoated graphite tubes with other carbide-forming metals (Ta, Zr or La) produces refractory metal-carbide surfaces thereby preventing the carbide-forming yttrium to come in physical contact with the reactive graphite surface. The result is an enhancement in the analytical sensitivity (peak height absorbance) of yttrium. The atomization of Y from a metal surface (Ta or W) gives better analytical sensitivity, lower atomization temperature, and negligible memory effect compared with those from metal-carbidized surfaces.

  9. High-temperature corrosion behavior of Ni-16Mo-7Cr-4Fe superalloy containing yttrium in molten LiF-NaF-KF salt

    NASA Astrophysics Data System (ADS)

    Li, Xiao-li; He, Shang-ming; Zhou, Xing-tai; Huai, Ping; Li, Zhi-jun; Li, Ai-guo; Yu, Xiao-han

    2015-09-01

    The corrosion tests of a Ni-16Mo-7Cr-4Fe superalloy containing various yttrium contents were performed in molten FLiNaK (LiF-NaF-KF: 46.5-11.5-42 mol%) salt at 850 °C for 620 h, with the goals of investigating the effects of yttrium on the corrosion resistance of Ni-16Mo-7Cr-4Fe alloy and understanding the corrosion mechanisms. The addition of an appropriate amount of yttrium promotes the formation of a Y-rich layer near the surface and inhibits the diffusion of the susceptive elements.

  10. 42 CFR 88.3 - Eligibility-currently identified responders.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.3 Eligibility—currently identified responders. (a) Responders who...

  11. 42 CFR 88.15 - Appeals regarding treatment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.15 Appeals regarding treatment. (a) Individuals may appeal the...

  12. 42 CFR 88.7 - Eligibility-currently identified survivors.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.7 Eligibility—currently identified survivors. (a) Survivors who have...

  13. 42 CFR 88.7 - Eligibility-currently identified survivors.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.7 Eligibility—currently identified survivors. (a) Survivors who have...

  14. 42 CFR 88.3 - Eligibility-currently identified responders.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.3 Eligibility—currently identified responders. (a) Responders who...

  15. 42 CFR 88.14 - Standard for determining medical necessity.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES WORLD TRADE CENTER HEALTH PROGRAM § 88.14 Standard for determining medical necessity. All treatment provided under the...

  16. Genetics Home Reference: MyD88 deficiency

    MedlinePLUS

    ... and pus production (abscesses) on internal organs. In addition, affected individuals can have localized infections of the ears, nose, or throat. Although fever is a common reaction to bacterial infections, many people with MyD88 deficiency ...

  17. 40 CFR 282.88 - Pennsylvania State-Administered Program.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Pennsylvania State-Administered Program. 282...PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) APPROVED...STORAGE TANK PROGRAMS Approved State Programs § 282.88 Pennsylvania State-Administered...

  18. 40 CFR 282.88 - Pennsylvania State-Administered Program.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Pennsylvania State-Administered Program. 282...PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) APPROVED...STORAGE TANK PROGRAMS Approved State Programs § 282.88 Pennsylvania State-Administered...

  19. 88. Reproduction from glass plate negative (original in Modjeski and ...

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

    88. Reproduction from glass plate negative (original in Modjeski and Masters office, Harrisburg, Pennsylvania, Modjeski Collection, No. 4, not dated) LOOKING DOWNSTREAM - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  20. 88. (Credit CBF) Twelve Mile Bayou Pumping Station and force ...

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

    88. (Credit CBF) Twelve Mile Bayou Pumping Station and force main for pumping water over levee and into the canal (Blind Bayou), March 1913. - McNeil Street Pumping Station, McNeil Street & Cross Bayou, Shreveport, Caddo Parish, LA