Journal articles: 'Tellurium 127'

1

de Laeter, J. R. "S-Process abundances for Tellurium-122, 123, 124." Astrophysical Journal 434 (October 1994): 695. http://dx.doi.org/10.1086/174770.

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2

Nocke, A. "Polymer composite based microbolometers." Journal of Sensors and Sensor Systems 2, no. 2 (August 1, 2013): 127–35. http://dx.doi.org/10.5194/jsss-2-127-2013.

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Abstract. This work focuses on the basic suitability assessment of polymeric materials and the corresponding technological methods for the production of infrared (micro-) bolometer arrays. The sensitive layer of the microbolometer arrays in question is composed of an electrically conductive polymer composite. Semi-conducting tellurium and vanadium dioxide, as well as metallic silver, are evaluated concerning their suitability as conductive filling agents. The composites with the semi-conducting filling agents display the higher temperature dependence of electrical resistance, while the silver composites exhibit better noise performance. The particle alignment – homogeneous and chain-shaped alike – within the polymer matrix is characterized regarding the composites' electrical properties. For the production of microbolometer arrays, a technology chain is introduced based on established coat-forming and structuring standard technologies from the field of polymer processing, which are suitable for the manufacture of a number of parallel structures. To realize the necessary thermal isolation of the sensitive area, all pixels are realized as self-supporting structures by means of the sacrificial layer method. Exemplarily, 2 × 2 arrays with the three filling agents were manufactured. The resulting sensor responsivities lie in the range of conventional microbolometers. Currently, the comparatively poor thermal isolation of the pixels and the high noise levels are limiting sensor quality. For the microbolometers produced, the thermal resolution limit referring to the temperature of the object to be detected (NETD) has been measured at 6.7 K in the superior sensitive composite layer filled with silver particles.

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3

Yang, Wei, Gang Wang, Qian Wang, Ping Dong, Huan Cao, and Kai Zhang. "Comprehensive Recovery Technology for Te, Au, and Ag from a Telluride-Type Refractory Gold Mine." Minerals 9, no. 10 (September 30, 2019): 597. http://dx.doi.org/10.3390/min9100597.

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While extracting gold and silver from telluride-type gold deposits, it is beneficial to develop a comprehensive recovery technology for tellurium. In this paper, we report process mineralogy based on the backward processing technology and the low comprehensive utilization rate of typical telluride-type gold deposits in Xiaoqinling, China. The findings show that tellurium, gold, and silver are the most valuable elements in the ore fissures and gangue minerals and are encapsulated in metallic sulfur ore in the form of altaite, hessite, calaverite, antamokite and natural gold. The flotation method was innovatively applied in this study to comprehensively recover Te, Au and Ag. The results show that when the ore particle size was −0.074 mm (70%), the flotation pulp density was 33%, the pulp pH was 8, and the combined collector (isoamyl xanthate + ethyl thio- carbamate (1:1)) was 120 g/t, in the process involving one rough flotation step, two cleaning flotations and two scavenging flotations as well as a continuous 8 d industrial test, the recovery degree was stable and the average grades of Te, Au, and Ag were 241.61, 90.30, and 92.74 g/t with 95.42%, 97.28%, and 94.65% recovery rates, respectively; thus, excellent recovery degrees were obtained. Compared with the original flotation process, the recovery rates of Te, Au, and Ag were increased by 19.91%, 6.93%, and 5.67%, which boosted the effective enrichment of all valuable elements in the telluride-type gold mine and achieved technological progress.

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4

Angermaier, Klaus, and Hubert Schmidbaur. "Preparation and Structure of Poly(gold)telluronium Salts." Zeitschrift für Naturforschung B 51, no. 6 (June 1, 1996): 879–82. http://dx.doi.org/10.1515/znb-1996-0619.

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Abstract Tris[(triphenylphosphine)gold(I)]telluronium tetrafluoroborate (1) was prepared from the corresponding oxonium salt and bis(t-butyldimethylsilyl)tellurium in dichloromethane at -78°C. The product forms yellow crystals, thermally stable to 125°C. It was identified by standard analytical and spectroscopic techniques, including a single crystal X-ray diffraction study. In the crystal lattice, the cations form tellurium-capped triangles of gold, which are associated into dimers through short intermolecular Au -Au contacts, resembling those in the corresponding sulfur and selenium compounds. - The reaction of (t-BuMe2Si)2Te with four equivalents of [(Ph3P)Au]BF4 in tetrahydrofuran at -78°C gives a tetranuclear compound, {[(Ph3P)Au]4Te}2+ 2 BF4- (2) which differs from 1 in its analytical and spectroscopic data. Its structure could not be determined, but it is assumed that the dications have a square pyramidal geometry

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5

Skuridin, Viktor S., Alexander Garapatski, Ilyas Slamkulov, Aleksey Semenov, and Yanina Ermakova. "Thermal Desorption of Iodine-123 from Tellurium-122 Oxide Irradiated by Deuterons." Advanced Materials Research 1084 (January 2015): 593–97. http://dx.doi.org/10.4028/www.scientific.net/amr.1084.593.

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The paper studies the iodine-123 extraction process from the targets of enriched Tellurium-122 irradiated by deuterons at the cyclotron R-7M. We researched the regularities of radionuclide accumulation in the absorbent solution tank, depending on the temperature and air pumping regime through the system. As a result, we suggested a separate temperature treatment of the targets with the purpose of their preliminary purification from impurities and subsequent obtaining of "Na123I" preparation with radiochemical yield 97%.

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6

Alam, Mohammad Firoz. "Toxicity of sodium tellurite (Na2TeO3) against Aedes caspius larvae in Gizan, Southwestern region, Kingdom of Saudi Arabia." Environment Conservation Journal 15, no. 3 (December 20, 2014): 29–33. http://dx.doi.org/10.36953/ecj.2014.15304.

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The most common mosquito-borne diseases in Saudi Arabia are dengue, filaria, malaria and Rift valley fever. Rift valley fever /Dengue outbreaks in Mediterranean region have progressively increased, with recent reports of cases in Saudi Arabia. A serious out break had been seen in the southern coastal province of Jazan of Saudi Arabia. Tellurium is considered to be an important element in emerging world of corrosion resistance technology and glass ware technology. There was no literature available on mosquito larval toxicity. Thus this compound has stimulated our interest to evaluating the toxicity effect against mosquito larvae. The toxicity of Sodium tellurite was performed against Aedes caspius as per WHO methods. Preliminary toxicity of Sodium tellurite was evaluated at 200 ppm concentration in different time interval like 6 hrs, 12 hrs, 18 hrs and 24 hrs and percent mortality was recorded as 21.66%, 55%, 94% and 100% respectively against larvae.Therefore, further quantitative assay were carried out in different concentration of tellurite which was less than preliminary concentration such as 25 ppm, 50 ppm, 75 ppm, 100 ppm, 125 ppm, 150 ppm and 200 ppm. The LC50 and LC90 value was observed 37.5 ppm and 105 ppm respectively against the Ae. Caspius larvae. No mortality was observed in control group in all experiments. In conclusion, the Sodium tellurite are effective and may be developed as potent larvicides in future.

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7

Detty, Michael R., P. Mark Henrichs, and James A. Whitefield. "Tellurium-125 coupling to hydrogen, carbon-13, and tellurium-125 nuclei in NMR studies of tellurium-125 enriched 1,3-ditellurole." Organometallics 5, no. 8 (August 1986): 1544–47. http://dx.doi.org/10.1021/om00139a006.

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8

Berry, Frank J., and John G. Holden. "A tellurium-125 mössbauer investigation of tellurium-tantalum and tellurium-niobium oxides." Inorganica Chimica Acta 105, no. 2 (December 1985): 99–102. http://dx.doi.org/10.1016/s0020-1693(00)90546-2.

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9

Berry, Frank J., Christopher D. Gibbs, Rüdiger Kniep, and Sabine Paashaus. "Tellurium-125 Mössbauer spectra of gallium(II,III) tellurohalides, Ga3Te3X, and gallium(II) telluride, GaTe." Inorganica Chimica Acta 171, no. 1 (May 1990): 75–77. http://dx.doi.org/10.1016/s0020-1693(00)84667-8.

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10

Adhikari, Subash, and NB Chaure. "Growth of Copper Indium Telluride (Cuinte2) Thin Films Using Electrochemical Route for Photovoltaic Application." Nepal Journal of Science and Technology 12 (July 23, 2012): 318–23. http://dx.doi.org/10.3126/njst.v12i0.6519.

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Copper indium di-telluride (CuInTe2; CIT) was electrochemically deposited onto indium tin oxide (ITO) substrate using aqueous medium at various electrodeposition conditions like temperature, pH, stirring rate and concentration of the samples. The resulting thin films were characterized using UV-Visible-NIR spectrophotometer, X-ray diffractometer, scanning electron microscopy and energy dispersive X-ray to find out energy band gap, structural properties, surface morphology and the elemental composition in the film respectively. The resulting films showed a polycrystalline nature with band gap varying from 1.27 to 1.89 eV. The elemental composition of the as deposited and annealed sample showed that the films were mostly copper and tellurium rich. The crystallinity of the films improved after annealing for 5 minutes at 350°C but the secondary phase like CuxTe and InxTe could not be recombined completely.DOI: http://dx.doi.org/10.3126/njst.v12i0.6519 Nepal Journal of Science and Technology 12 (2011) 318-323

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11

Turner, Raymond J., Yair Aharonowitz, Joel H. Weiner, and Diane E. Taylor. "Glutathione is a target in tellurite toxicity and is protected by tellurite resistance determinants inEscherichia coli." Canadian Journal of Microbiology 47, no. 1 (January 1, 2001): 33–40. http://dx.doi.org/10.1139/w00-125.

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Tellurite (TeO32-) is highly toxic to most microorganisms. The mechanisms of toxicity or resistance are poorly understood. It has been shown that tellurite rapidly depletes the reduced thiol content within wild-type Escherichia coli. We have shown that the presence of plasmid-borne tellurite-resistance determinants protects against general thiol oxidation by tellurite. In the present study we observe that the tellurite-dependent depletion of cellular thiols in mutants of the glutathione and thioredoxin thiol:redox system was less than in wild-type cells. To identify the type of low-molecular-weight thiol compounds affected by tellurite exposure, the thiol-containing molecules were analyzed by reverse phase HPLC as their monobromobimane derivatives. Results indicated that reduced glutathione is a major initial target of tellurite reactivity within the cell. Other thiol species are also targeted by tellurite, including reduced coenzyme A. The presence of the tellurite resistance determinants kilA and ter protect against the loss of reduced glutathione by as much as 60% over a 2 h exposure. This protection of glutathione oxidation is likely key to the resistance mechanism of these determinants. Additionally, the thiol oxidation response curves were compared between selenite and tellurite. The loss of thiol compounds within the cell recovered from selenite but not to tellurite.Key words: tellurite, resistance, thiol oxidation, heavy metal toxicity, selenite, glutathione.

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12

Марченко, А. В., П. П. Серегин, Е. И. Теруков, and К. Б. Шахович. "Антиструктурные дефекты в полупроводниковых стеклах Ge-Te и Ge-As-Te." Физика и техника полупроводников 53, no. 5 (2019): 718. http://dx.doi.org/10.21883/ftp.2019.05.47570.9032.

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AbstractThe formation of antisite defects in Ge_20Te_80 and Ge_15As_4Te_81 vitreous alloys in the form of tin atoms in tellurium sites and tellurium atoms in germanium sites is shown by emission Mössbauer spectroscopy with the ^119 mm Sn(^119 m Sn), ^119 m Te(^119 m Sn), ^125Sn(^125Te), and ^125 m Te(^125Te) isotopes. It is shown that the isovalent substitution of germanium atoms by tin atoms does not vary the symmetry of the local surrounding of germanium sites, while tin and tellurium atoms reconstruct their local surrounding in sites unnatural for them.

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13

Jones, Colin H. W., and Rajendra D. Sharma. "A tellurium-125 Moessbauer study of complexes containing metal-tellurium multiple bonds." Organometallics 5, no. 6 (June 1986): 1194–97. http://dx.doi.org/10.1021/om00137a022.

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14

Jones, C. H. W., R. D. Sharma, and S. P. Taneja. "A tellurium-125 and tin-119 Mössbauer and nuclear magnetic resonance study of the group IV organotellurides." Canadian Journal of Chemistry 64, no. 5 (May 1, 1986): 980–86. http://dx.doi.org/10.1139/v86-164.

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The 125Te Mössbauer and nmr spectra of the compounds (R3X)2Te(R = Me, X = C, Si, Ge, and Sn; R = Ph, X = Ge and Sn), R3MTePh (R = Me, X = Si, Ge, and Sn; R = Ph, X = Ge, Sn, Pb), R2Sn(TePh)2 (R = Me and t-Bu), and the cyclic compounds (Me2SnTe)3, (Me2Sn)3Te2, and (t-Bu2SnTe)2 have been measured. The trends in the Mössbauer and nmr data are discussed. The Mössbauer quadrupole splittings increase as the nmr chemical shifts become more positive, corresponding to a decrease in the shielding at the tellurium nucleus. The 119Sn Mössbauer and nmr parameters of the compounds (R3Sn)2E andR3SnEPh (R = Me and Ph), (Me2SnE)3, (Me2Sn)2E2, (t-Bu2SnE)2, and Me2Sn(EPh)2 (E = S, Se, and Te) are discussed. The 119Sn Mössbauer quadrupole splittings are again observed to increase as the nmr chemical shifts become more positive. The 125Te and 119Sn nmr and Mössbauer data provide evidence that there is little transmission of bonding effects through the tin–tellurium bond as the chemical environment about the tin or tellurium is changed.

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15

Тарасов, А. С., Н. Н. Михайлов, С. А. Дворецкий, Р. В. Менщиков, И. Н. Ужаков, А. С. Кожухов, Е. В. Федосенко, and О. Е. Терещенко. "Получение атомарно-чистых и структурно-упорядоченных поверхностей эпитаксиальных пленок CdTe для последующей эпитаксии." Физика и техника полупроводников 55, no. 9 (2021): 748. http://dx.doi.org/10.21883/ftp.2021.09.51289.18.

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In this work, atomically clean and structurally ordered surface of CdTe epitaxial layer after storage in air by treatment in isopropyl alcohol saturated with vapors of hydrochloric acid, and further temperature heating in an ultrahigh vacuum, was obtained. CdTe surface chemical treatment results in the removal of native oxides and surface enrichment with elemental tellurium. Heating in vacuum leads to the tellurium desorption and the appearance of a Te-stabilized CdTe surface. During heating in vacuum, two stages of surface state change are observed (~125°С and ≤250°С). At Т>250°С, elemental tellurium is desorbed and a Te-stabilized structure (1x1) CdTe(013) is formed.

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16

Rollert, F., Nicolaas Stolwijk, and Helmut Mehrer. "Diffusion of Implanted Tellurium-121 into Silicon." Defect and Diffusion Forum 95-98 (January 1993): 949–54. http://dx.doi.org/10.4028/www.scientific.net/ddf.95-98.949.

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17

Jones, C. H. W., and R. D. Sharma. "Tellurium-125 NMR and Moessbauer spectroscopy of tellurium-phosphine complexes and the tellurocyanates." Organometallics 6, no. 7 (July 1987): 1419–23. http://dx.doi.org/10.1021/om00150a009.

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18

Jones, C. H. W., and R. D. Sharma. "Tellurium-125 Mössbauer and NMR data for tetraphenyltellurium and bis(2,2′-biphenylylene)tellurium." Journal of Organometallic Chemistry 332, no. 1-2 (September 1987): 115–21. http://dx.doi.org/10.1016/0022-328x(87)85130-6.

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19

Elder, P. J. W., and I. Vargas-Baca. "125Te NMR provides evidence of autoassociation of organo-ditellurides in solution." Physical Chemistry Chemical Physics 18, no. 44 (2016): 30740–47. http://dx.doi.org/10.1039/c6cp05892b.

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20

Bjoergvinsson, Mar, and Gary J. Schrobilgen. "Homo- and heteropolychalcogenide anions Ch2-, HCh-, Ch22-, Ch32-, and Ch42- (Ch = selenium and/or tellurium): solution proton, selenium-77, tellurium-123 and -125 NMR study." Inorganic Chemistry 30, no. 11 (May 1991): 2540–47. http://dx.doi.org/10.1021/ic00011a016.

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21

Mazurek, W., A. G. Moritz, and M. J. O'Connor. "Tellurium-125 NMR and mass spectra of dithiotellurides." Inorganica Chimica Acta 113, no. 2 (March 1986): 143–46. http://dx.doi.org/10.1016/s0020-1693(00)82236-7.

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22

Abakarov, G. M. "METHODS OF SYNTHESIS BENZOSELENIUM(TELLURIUM)AZOLES, 1,5- BENZOTELLURAZEPINES AND THEIR DERIVATIVES." Herald of Dagestan State Technical University. Technical Sciences 28, no. 1 (January 1, 2013): 117–22. http://dx.doi.org/10.21822/2073-6185-2013-28-1-117-122.

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23

Rusakov, Yury Yu, Leonid B. Krivdin, Freja F. Østerstrøm, Stephan P. A. Sauer, Vladimir A. Potapov, and Svetlana V. Amosova. "First example of a high-level correlated calculation of the indirect spin–spin coupling constants involving tellurium: tellurophene and divinyl telluride." Physical Chemistry Chemical Physics 15, no. 31 (2013): 13101–7. http://dx.doi.org/10.1039/c3cp51462e.

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24

Vieth, H. M., Shimon Vega, N. Yellin, and D. Zamir. "Temperature dependence of the NMR line shifts and T1 relaxation times of tellurium-125 in the semiconductor alloys mercury cadmium telluride." Journal of Physical Chemistry 95, no. 3 (February 1991): 1420–24. http://dx.doi.org/10.1021/j100156a071.

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25

Abdullah, Rasha A., Nada M. Saeed, Hussain Kh. Al Khalid, and Mohammed A. Razooqi. "Dispersion Parameters of Thin Cadmium Telluride Films at Different Thicknesses." International Journal of Scientific Research 2, no. 3 (June 1, 2012): 368–70. http://dx.doi.org/10.15373/22778179/mar2013/120.

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26

Gombler, Willy. "SOME SELENIUM-77 AND TELLURIUM-125 NMR SPECTROSCOPIC STUDIES." Phosphorus and Sulfur and the Related Elements 38, no. 3-4 (August 1988): 231–43. http://dx.doi.org/10.1080/03086648808079719.

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27

Bildstein, Abenno, Kurt J. Irgolic, and Daniel H. O'brien. "A TELLURIUM-125 STUDY OF LITHIUM ALKANE- AND ARENETELLUROLATES." Phosphorus and Sulfur and the Related Elements 38, no. 3-4 (August 1988): 245–56. http://dx.doi.org/10.1080/03086648808079720.

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28

Drake, John E., Layla N. Khasrou, Anil G. Mislankar, and Raju Ratnani. "Dimethyltellurium(IV) derivatives with mixed 1,1-dithio ligands. Crystal structures of Me2Te[S2CNMe2][S2COEt] and Me2Te[S2CNEt2][S2COMe]." Canadian Journal of Chemistry 77, no. 7 (July 1, 1999): 1262–73. http://dx.doi.org/10.1139/v99-123.

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Mixed ligand derivatives of Me2TeLL'2, where L = N,N-dialkyl dithiocarbamate or O,O-alkylene dithiophosphate and L' = O-alkyl dithiocarbonate, have been synthesized and characterized by elemental analysis, 1H, 13C, 31P, and 125Te NMR spectroscopy and infrared and Raman spectroscopy, and X-ray crystallography. Me2Te[S2CNMe2][S2COEt], 8: P[Formula: see text] (no. 2), with cell parameters a = 10.073(3) Å, b = 10.139(2) Å, c = 9.108(2) Å, α = 92.36(2)°, β = 115.55(2)°, γ = 111.19(2)°, V = 760.7(4) Å3, Z = 2, R = 0.0343, Rw = 0.0296. Me2Te[S2CNEt2][S2COMe], 9: P21/c (no. 14) with cell parameters a = 9.881(4) Å, b = 17.671(3) Å, c = 10.149(4) Å, β = 113.65(3)°, V = 1623.3(10) Å3, Z = 4, R = 0.0567, Rw = 0.0514. The immediate environment about tellurium in both molecules is essentially that of a saw-horse structure in which the lone pair is apparently stereochemically active and occupying an equatorial position in a distorted trigonal bipyramid. The S-Te-S angles in the two molecules are 166.87(6)° and 162.0(1)° for 8 and 9, respectively. In both molecules, the TeS bonds to the dithiocarbamate groups are slightly shorter than those to dithiocarbonates. The dithiocarbamate groups are oriented to give secondary interactions involving the apparently terminal sulfur atoms resulting in TeS distances of 3.205(2) and 3.277(4) Å, respectively, in 8 and 9. However, only in 9 is there a similar TeS distance of 3.346(5) Å involving the S2COMe group because in 8, the OEt group of S2COEt, rather than the terminal S atom, is oriented toward Te. Key words: structure, tellurium, methyl, dithiocarbamates, dithiocarbonates, dithiophosphates.

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29

Dietzsch, Wolfgang, Ruthmaria Olk, Eberhard Hoyer, Wolfgang Meiler, and Wolfgang Robien. "Tellurium-125 NMR investigations on coordination compounds of tellurium(II) with unsaturated dithio, thioseleno and diseleno ligands." Magnetic Resonance in Chemistry 27, no. 5 (May 1989): 500–502. http://dx.doi.org/10.1002/mrc.1260270516.

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30

Dedi, I. Dewa Putu Hermida, Indah Primadona, and Yang Yuan Chen. "Enhanced Power Factor of Single Crystalline Lead Telluride Nanowire." Materials Science Forum 901 (July 2017): 50–54. http://dx.doi.org/10.4028/www.scientific.net/msf.901.50.

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We present the thermoelectric properties of individual PbTe (lead telluride) nanowire (NW) grown by a stress induced method. Temperature-dependent thermoelectric power and electrical conductivity in PbTe NW with diameter 125 nm were investigated in temperature ranging of 300−400 K. The PbTe NW was found to have a Seebeck coeficient S and electrical conductivity σ of −121 μV K−1 and 138 S cm−1 at 300 K, respectively. The calculated power factor (PF) of PbTe NW (d = 125 nm) demonstrate an enhancement, wich is higher than that have been previously reported in PbTe NWs. Such an enhanced thermoelectric performance can in part be attributed to the size effect of nanowires.

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Mazurek, W., and A. G. Moritz. "Tellurium-125 NMR of Te(II) and Te(IV) dithiocarbamates." Inorganica Chimica Acta 154, no. 1 (December 1988): 71–76. http://dx.doi.org/10.1016/s0020-1693(00)85167-1.

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32

Alonzo, G., L. Garbato, F. Ledda, and C. Muntoni. "121-antimony Mössbauer spectroscopic study on some antimony-tellurium alloys." Journal of Physics and Chemistry of Solids 50, no. 11 (January 1989): 1195–96. http://dx.doi.org/10.1016/0022-3697(89)90031-0.

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33

Joshi, Y. N., A. Tauheed, and I. G. Davison. "The analysis of the 5s25p2, 5s5p3, 5s25p5d, and 5s25p6s configurations of Te III." Canadian Journal of Physics 70, no. 9 (September 1, 1992): 740–44. http://dx.doi.org/10.1139/p92-117.

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The spectrum of tellurium was photographed in the wavelength region 400–2000 Å (1 Å = 10−10 m) on a 3 m normal incidence spectrograph. The new measurements and configuration interaction calculations lead to major revisions in the earlier analysis of Te III. For the ground state 5s25p2, all but one of the previously known levels have been confirmed. Out of the 26 levels belonging to the three excited configurations, viz. 5s5p3, 5s25p5d, and 5s25p6s, 14 levels have been confirmed, 4 have been rejected, and for 8 of the levels, either the designation, J value or configuration assignments have been revised. Configuration interaction calculations were carried out to interpret the observed spectrum. Seventy-two lines have been classified in the 5s25p2 − (5s5p3 + 5s25p5d + 5s25p6s) transition array.

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34

Berry, Frank J., Alison A. Tyrrer, and Santokh S. Badesha. "Tellurium-125 Mössbauer spectroscopy and X-ray powder diffraction investigation of selenium-tellurium alloys prepared by novel methods." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 76, no. 1-4 (April 1993): 299–300. http://dx.doi.org/10.1016/0168-583x(93)95214-p.

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35

Fukushima, Hiroshi, Ken Hoshina, and Manabu Gomyoda. "Selective Isolation of eae-Positive Strains of Shiga Toxin-Producing Escherichia coli." Journal of Clinical Microbiology 38, no. 4 (2000): 1684–87. http://dx.doi.org/10.1128/jcm.38.4.1684-1687.2000.

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Culture on cefixime, tellurite, and sorbitol-MacConkey agar after HCl treatment facilitated the growth of 410 (94%) of 436eae-positive Shiga toxin-producing Escherichia coli (STEC) strains and 17 (16%) of 107 eae-negative STEC strains. This selectivity was closely related to acid resistance in E. coli and tellurite resistance ineae-positive STEC strains.

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36

Gladychev, V., L. Baransky, A. Schekotov, E. Fedorov, O. Pokhotelov, S. Andreevsky, A. Rozhnoi, et al. "Study of electromagnetic emissions associated with seismic activity in Kamchatka region." Natural Hazards and Earth System Sciences 1, no. 3 (September 30, 2001): 127–36. http://dx.doi.org/10.5194/nhess-1-127-2001.

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Abstract. A review of data processing of electromagnetic emission observation collected at the Complex Geophysical Observatory Karimshino (Kamchatka peninsula) during the first 5 months (July–November, 2000) of its operation is given. The main goal of this study addresses the detection of the phenomena associated with Kamchatka seismic activity. The following observations have been conducted at CGO: variations of ULF/ELF magnetic field, geoelectric potentials (telluric currents), and VLF signals from navigation radio transmitters. The methods of data processing of these observations are discussed. The examples of the first experimental results are presented.

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37

Borghese, Roberto, Francesca Borsetti, Paola Foladori, Giuliano Ziglio, and Davide Zannoni. "Effects of the Metalloid Oxyanion Tellurite (TeO32−) on Growth Characteristics of the Phototrophic Bacterium Rhodobacter capsulatus." Applied and Environmental Microbiology 70, no. 11 (November 2004): 6595–602. http://dx.doi.org/10.1128/aem.70.11.6595-6602.2004.

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ABSTRACT This work examines the effects of potassium tellurite (K2TeO3) on the cell viability of the facultative phototroph Rhodobacter capsulatus. There was a growth mode-dependent response in which cultures anaerobically grown in the light tolerate the presence of up to 250 to 300 μg of tellurite (TeO3 2−) per ml, while dark-grown aerobic cells were inhibited at tellurite levels as low as 2 μg/ml. The tellurite sensitivity of aerobic cultures was evident only for growth on minimal salt medium, whereas it was not seen during growth on complex medium. Notably, through the use of flow cytometry, we show that the cell membrane integrity was strongly affected by tellurite during the early growth phase (≤50% viable cells); however, at the end of the growth period and in parallel with massive tellurite intracellular accumulation as elemental Te0 crystallites, recovery of cytoplasmic membrane integrity was apparent (≥90% viable cells), which was supported by the development of a significant membrane potential (Δψ = 120 mV). These data are taken as evidence that in anaerobic aquatic habitats, the facultative phototroph R. capsulatus might act as a natural scavenger of the highly soluble and toxic oxyanion tellurite.

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38

Ilowski, J. J., and A. A. Berezin. "Hall-effect and resistivity measurements in copper–indium–gallium–selenium–tellurium solid solutions." Canadian Journal of Physics 63, no. 6 (June 1, 1985): 778–80. http://dx.doi.org/10.1139/p85-125.

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Hall-effect and resistivity measurements of semiconductor alloys of the type Culn1−yGaySe2(1−x)Te2x have been made over the temperature range 77–300 K. All materials were p-type with mobilities in the range 1 < μ < 10 cm2/V∙s. The observed electrical properties are interpreted in terms of the presence of intrinsic defects arising from dissimilar evaporation of the constituent elements of the materials during melting and annealing stages.

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39

Detty, Michael R., William C. Lenhart, Paul G. Gassman, and Matthew R. Callstrom. "XPS and tellurium-125 NMR studies of organotellurium compounds. 1. Tellurapyrans, tellurapyranones, tellurapyrylium salts, and their benzo analogs in both the tellurium(II) and tellurium(IV) oxidation states." Organometallics 8, no. 4 (April 1989): 861–65. http://dx.doi.org/10.1021/om00106a001.

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40

Orion, Isabelle, João Rocha, Stéphane Jobic, Virginie Abadie, Raymond Brec, Christian Fernandez, and Jean-Paul Amoureux. "Solid-state tellurium-125 nuclear magnetic resonance studies of transition-metal ditellurides †." Journal of the Chemical Society, Dalton Transactions, no. 20 (1997): 3741–48. http://dx.doi.org/10.1039/a704757f.

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41

Quang, Nguyen V., I. Shih, and C. H. Champness. "Czochralski growth of Te–rich SexTe1−x crystals." Canadian Journal of Physics 63, no. 6 (June 1, 1985): 762–66. http://dx.doi.org/10.1139/p85-122.

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Single crystals of tellurium-rich SexTe1−x alloys have been grown by the Czochralski method for x < 0.16. A double-crucible was used to contain the melt, which eliminated scum on the liquid surface, enabling crystals to be grown with higher selenium concentrations than previously obtained. The inner graphite vessel of the crucible not only drew scum-free liquid from the quartz outer container, but also acted as a susceptor for the radio-frequency (r.f.) heating, producing more stable convection in the melt. With this method, single crystals of good quality, as indicated by Laue patterns, were obtained from melts containing up to 30 at.% selenium. The concentrations of selenium in the crystals, as determined by electron-probe microanalysis (EPMA), were about half those in the corresponding melts, in agreement with the Te-rich end of the phase diagram. It was also found that single crystals of Te-rich SexTe1−x could be grown equally well in pulling directions both parallel and perpendicular to the c axis.

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42

Silva, Marcio S., and Daniel Pietrobom. "Chiral discrimination of β-telluride carboxylic acids by NMR spectroscopy." New Journal of Chemistry 39, no. 11 (2015): 8240–44. http://dx.doi.org/10.1039/c5nj01877c.

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43

Babushkina, T. A., Yu V. Goltyapin, and S. I. Gushchin. "125I NQR Spectra of Iodobenzoic Acid and Iodophenol Derivatives. H-Bonds and C-I Characteristic Bonds of These Substances." Zeitschrift für Naturforschung A 51, no. 5-6 (June 1, 1996): 651–56. http://dx.doi.org/10.1515/zna-1996-5-646.

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Abstract This is a review of investigations on iodo-benzoic acid, iodohippuric acid, and iodophenol derivatives by NQR, NMR, and emission Mössbauer spectroscopy. The influence of intermolecular, intramolecular, and bifurcated O-H…I and O-H…O bonds on the properties of iodine-carbon bonds is demonstrated. Ionized and non-ionized forms of tyrosine differ by the probability of H-bond formation. The simultaneous use of 127I NQR and emission Mössbauer 125I spectroscopy open the possibility to determine the types of tellurium-organic substances formed in the process of K-decay of 125I.

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44

Sadeghi, M., T. Kakavand, K. K. Moghaddam, and R. Ghasemi. "Using computer simulation techniques to design a tellurium-123 target for 123I production." Radiochemistry 50, no. 5 (October 2008): 530–34. http://dx.doi.org/10.1134/s1066362208050160.

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45

Petrusenko, Yu T., L. I. Nikolaichuk, A. I. Tutubalin, A. G. Shepelev, and T. A. Ponomarenko. "Production of medical 123–125I in the CV-28 cyclotron using tellurium targets." Atomic Energy 109, no. 5 (March 2011): 350–54. http://dx.doi.org/10.1007/s10512-011-9367-7.

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46

Jones, C. H. W., R. D. Sharma, and D. Naumann. "A tellurium-125 Mössbauer study of bis(trifluoromethyl)- and bis(pentafluorophenyl)- tellurides and their dihalides." Canadian Journal of Chemistry 64, no. 5 (May 1, 1986): 987–90. http://dx.doi.org/10.1139/v86-165.

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The 125Te Mössbauer spectra for (CF3)2Te and (C6F5)2Te have been recorded and exhibit significantly larger quadrupole splittings (14.02 and 13.40 mm s−1 respectively) than those of Me2Te (10.5 mm s−1) and Ph2Te (11.0 mm s−1). The dihalides (CF3)2TeX2 and (C66F5)2TeX2 (X = F, Cl,Br) have consistently smaller quadrupole splittings than the dihalides Me2Tex2 and Ph2TeX2. These observations are consistent with the greater electronegativity of the CF3 and C6F5 ligands. The 125Te nmr chemical shifts of (C6F5)Te and its dihalides show a consistent trend to more positive values (increased deshielding) as the electronegativity of the ligands attached to tellurium increases ((C6F5)Te, 297.6 ppm; (C6F5)2TeF2, 1060 ppm). However, for (CF3)2Te and its dihalides a more complex pattern is observed which may be explained by changes in the mean electronic excitation term in the Ramsey paramagnetic shielding term.

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47

Collins, Michael J., John A. Ripmeester, and Jeffery F. Sawyer. "CP/MAS tellurium-125 NMR in solids: an example of 125Te-35,37Cl J coupling." Journal of the American Chemical Society 109, no. 13 (June 1987): 4113–15. http://dx.doi.org/10.1021/ja00247a047.

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48

Luthra, Narender P., Anthony M. Boccanfuso, R. Bruce Dunlap, and Jerome D. Odom. "Studies in selenium-77 and tellurium-125 nuclear magnetic resonance. Substituent effects and polarizability." Journal of Organometallic Chemistry 354, no. 1 (October 1988): 51–62. http://dx.doi.org/10.1016/0022-328x(88)80638-7.

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49

Laali, Khosrow, H. Y. Chen, and Robert J. Gerzina. "Selenium-77, tellurium-125, and carbon-13 NMR chemical shifts and one-bond 77Se-13C, 125Te-13C, and 13C-1H coupling constants of trialkylselenonium and -telluronium triflates, protonated dialkylselenonium and -telluronium cations, and their corresponding donor-acceptor complexes." Journal of Organic Chemistry 52, no. 18 (September 1987): 4126–28. http://dx.doi.org/10.1021/jo00227a036.

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Seidel, J. V., M. Lendl, V. Bourrier, D. Ehrenreich, R. Allart, S. G. Sousa, H. M. Cegla, et al. "Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS)." Astronomy & Astrophysics 643 (October 30, 2020): A45. http://dx.doi.org/10.1051/0004-6361/202039058.

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WASP-127b is one of the puffiest exoplanets found to date, with a mass of only 3.4 Neptune masses, but a radius larger than that of Jupiter. It is located at the border of the Neptune desert, which describes the lack of highly irradiated Neptune-sized planets, and which remains poorly understood. Its large scale height and bright host star make the transiting WASP-127b a valuable target to characterise in transmission spectroscopy. We used combined EulerCam and TESS light curves to recalculate the system parameters. Additionally, we present an in-depth search for sodium in four transit observations of WASP-127b, obtained as part of the Hot Exoplanet Atmosphere Resolved with Transit Spectroscopy (HEARTS) survey with the High Accuracy Radial velocity Planet Searcher (HARPS) spectrograph. Two nights from this dataset were analysed independently by another team. The team claimed a detection of sodium that is incompatible with previous studies of data from both ground and space. We show that this strong sodium detection is due to contamination from telluric sodium emissions and the low signal-to-noise ratio in the core of the deep stellar sodium lines. When these effects are properly accounted for, the previous sodium signal is reduced to an absorption of 0.46 ± 0.20% (2.3σ), which is compatible with analyses of WASP-127b transits carried out with other instruments. We can fit a Gaussian to the D2 line, but the D1 line was not detected. This indicates an unusual line ratio if sodium exists in the atmosphere. Follow-up of WASP-127 at high resolution and with high sensitivity is required to firmly establish the presence of sodium and analyse its line shape.

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Journal articles on the topic 'Tellurium 127'

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