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Artículos de revistas sobre el tema "Copper – Spectra"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 16 de febrero de 2022

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1

Reyes, Gonzalo, Walter Diaz, Carlos Toro, et al. "Copper Oxide Spectral Emission Detection in Chalcopyrite and Copper Concentrate Combustion." Processes 9, no. 2 (2021): 188. http://dx.doi.org/10.3390/pr9020188.

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In this research, the spectral detection of copper oxide is reported from different combustion tests of chalcopyrite particles and copper concentrates. Combustion experiments were performed in a bench reactor. In all the tests, the radiation emitted from the sulfide particle reactions was captured in the VIS–NIR range. The obtained spectral data were processed by using the airPLS (adaptive iteratively reweighted penalized least squares) algorithm to remove their baseline, and principal component analysis (PCA) and the multivariate curve resolution method alternate least squares (MCR-ALS) metho

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2

Koerting, Friederike, Nicole Koellner, Agnieszka Kuras, et al. "A solar optical hyperspectral library of rare-earth-bearing minerals, rare-earth oxide powders, copper-bearing minerals and Apliki mine surface samples." Earth System Science Data 13, no. 3 (2021): 923–42. http://dx.doi.org/10.5194/essd-13-923-2021.

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Abstract. Mineral resource exploration and mining is an essential part of today's high-tech industry. Elements such as rare-earth elements (REEs) and copper are, therefore, in high demand. Modern exploration techniques from multiple platforms (e.g., spaceborne and airborne), to detect and map the spectral characteristics of the materials of interest, require spectral libraries as an essential reference. They include field and laboratory spectral information in combination with geochemical analyses for validation. Here, we present a collection of REE- and copper-related hyperspectral spectra wi

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3

Melia, Hamish A., Christopher T. Chantler, Lucas F. Smale та Alexis J. Illig. "The characteristic radiation of copper Kα1,2,3,4". Acta Crystallographica Section A Foundations and Advances 75, № 3 (2019): 527–40. http://dx.doi.org/10.1107/s205327331900130x.

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A characterization of the Cu Kα1,2 spectrum is presented, including the 2p satellite line, Kα3,4, the details of which are robust enough to be transferable to other experiments. This is a step in the renewed attempts to resolve inconsistencies in characteristic X-ray spectra between theory, experiment and alternative experimental geometries. The spectrum was measured using a rotating anode, monolithic Si channel-cut double-crystal monochromator and backgammon detector. Three alternative approaches fitted five Voigt profiles to the data: a residual analysis approach; a peak-by-peak fit; and a s

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4

Liu, Xiao Dong, Dong Dong Meng, Xu Guang Zheng, Masato Hagihala, and Qi Xin Guo. "Mid-IR and Raman Spectral Properties of Clinoatacamite-Structure Basic Copper Chlorides." Advanced Materials Research 146-147 (October 2010): 1202–5. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.1202.

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Basic copper chloride Cu2(OH)3Cl and Cu2(OD)3Cl polycrystalline sample were successfully synthesized in the same single phase of clinoatacamite-structure, and the latter’s mid-infrared absorption spectra (4000-400cm–1) and Raman spectra (4000-95cm–1) were first, to the best of our knowledge, measured respectively by FTIR spectroscopy and Micro-Raman spectroscopy to study the corresponding relationship between their spectral properties and crystal structure. Through the comparative analysis of the four spectra we definitely assign or tentatively suggest the vibration modes of OH/D groups in the

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5

Gaydon, James W., Hylke J. Glass, and Richard D. Pascoe. "Method for near Infrared Sensor-Based Sorting of a Copper Ore." Journal of Near Infrared Spectroscopy 17, no. 4 (2009): 177–94. http://dx.doi.org/10.1255/jnirs.849.

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Sorting of minerals based on near infrared (NIR) analysis is promising because many minerals have distinct “fingerprints” in the NIR region. An experimental system was customised in order to obtain accurate NIR reflectance spectra. As a test application, the NIR spectra of transects across pre-classified copper ore particles were measured. Matrices containing correlation coefficients of particle pixel–pixel spectra were subjected to principal component analysis. In addition to providing insight into the homogeneity of the particle surface, the results were used to identify key spectral feature

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6

Angel, S. M., L. F. Katz, D. D. Archibald, and D. E. Honigs. "Near-Infrared Surface-Enhanced Raman Spectroscopy. Part II: Copper and Gold Colloids." Applied Spectroscopy 43, no. 3 (1989): 367–72. http://dx.doi.org/10.1366/0003702894202940.

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Near-infrared (NIR) surface-enhanced Raman spectra (SERS) on copper and gold metal colloids were obtained with a Fourier transform Raman spectrometer using a Nd:YAG laser (1.064 μm) for excitation. Enhanced spectra were observed for pyridine and 3-chloropyridine (CP) on copper colloids and for tris(orthophenanthroline)ruthenium(II), Ru(o-phen)32+, on copper and gold colloids. The copper-colloid surface-enhanced Raman spectra of pyridine and CP were compared with spectra measured for these molecules on copper electrodes. NIR-SERS enhancements on the metal colloids were at least as large as for

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7

Sugar, Jack, William L. Rowan, and Victor Kaufman. "Aluminumlike spectra of copper through molybdenum." Journal of the Optical Society of America B 5, no. 10 (1988): 2183. http://dx.doi.org/10.1364/josab.5.002183.

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8

Kaufman, Victor, William L. Rowan, and Jack Sugar. "Chlorinelike spectra of copper to molybdenum." Journal of the Optical Society of America B 6, no. 8 (1989): 1444. http://dx.doi.org/10.1364/josab.6.001444.

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9

Kaufman, Victor, William L. Rowan, and Jack Sugar. "Sulfurlike spectra of copper through molybdenum." Journal of the Optical Society of America B 7, no. 7 (1990): 1169. http://dx.doi.org/10.1364/josab.7.001169.

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10

FARRAR, Jacqueline A., Grazyna FORMICKA, Michael ZEPPEZAUER, and Andrew J. THOMSON. "Magnetic and optical properties of copper-substituted alcohol dehydrogenase: a bisthiolate copper (II) complex." Biochemical Journal 317, no. 2 (1996): 447–56. http://dx.doi.org/10.1042/bj3170447.

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Replacement of the catalytic Zn(II) in horse liver alcohol dehydrogenase (HLADH) with copper produces a mononuclear Cu(II) chromophore with a ligand set consisting of two cysteine sulphurs, one histidine nitrogen plus one further atom. The fourth ligand to the metal ion and the conformation of the protein may be altered by addition of exogenous ligands and/or the cofactor NADH. Absorbance, CD, low-temperature magnetic CD (MCD) and EPR spectra are presented of copper-substituted HLADH samples in both ‘open’ and ‘closed’ conformations and in the presence and absence of the exogenous ligands pyra

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11

LOO, B. H., D. H. BURNS, and T. D. ROLIN. "A RAMAN SPECTROSCOPIC STUDY OF BARIUM COPPER OXIDE." Modern Physics Letters B 03, no. 03 (1989): 271–77. http://dx.doi.org/10.1142/s0217984989000443.

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Various physical treatments of BaCuO 2 samples result in irreversible changes in its Raman spectrum. The prominent peaks at 576 and 628 cm −1 in the spectra of sintered pellets of BaCuO 2 disappear upon further annealing in air or oxygen or upon mere regrinding of the pellets. Further annealing in air, oxygen, or vacuum does not restore these peaks. Similar but less intense peaks reappear upon exposure of pellets to laboratory environment for several weeks, but these broaden and disappear upon further exposure. These spectral characteristics contrast with those observed in Y123 Raman spectrum.

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12

Homaunmir, V., S. H. Tohidi, G. Grigorya, and M. Ayatollah Zada Shirazi. "Dependence Properties of Sol-Gel Derived CuO@SiO2 Nanostructure to Diverse Concentrations of Copper Oxide." Journal of Nanoparticles 2013 (September 19, 2013): 1–5. http://dx.doi.org/10.1155/2013/156813.

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Various concentrations of copper oxide were embedded into silica matrix of xerogel forms using copper source Cu(NO3)2·3H2O. The xerogel samples were prepared by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) with determination of new molar ratios of the components by the sol-gel method. In this paper, three samples of copper oxide were doped into silica matrices using different concentrations. We obtained 10, 20, and 30 wt.% of copper oxide in silica matrices labeled as A, B, and C, respectively. The absorption and transmittance spectra of the gel matrices were treated at diffe

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13

Ion, Emilia, Mirela Calinescu, Ana Emandi, Victoria Badea, and Dumitru Negoiu. "Copper(II) Complex Compounds with Mixed Hydrazone Ligands." Revista de Chimie 59, no. 1 (2008): 12–16. http://dx.doi.org/10.37358/rc.08.1.1697.

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Three Cu(II) complex compounds with mixed hydrazone ligands have been prepared and characterized in view of their potential biological activity. The complex compounds have the formulas: [Cu(HLa)(Lc)Br], [CuLaLc] and [CuLbLc] . Na, where HLa = 4-dimethylamino benzaldehyde-2-benzothiazolyl hydrazone, H2Lb = 2-hydroxybenzaldehyde-2-benzothiazolyl hydrazone and HLc = 2-hydroxy-1-naphthyliden-N,N-dimethyl hydrazone. The complexes have been characterized by elemental and thermogravimetrical analysis, infrared, electronic and EPR spectra. EPR spectral studies of the complexes gave axial symmetry, wit

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14

PRASAD, M., M. CHANDRASEKHAR, and V. CHANDRA MOULI. "OPTICAL ABSORPTION AND ESR SPECTRAL STUDIES ON COPPER-DOPED LEAD-CADMIUM GLASSES." Modern Physics Letters B 19, no. 03 (2005): 119–28. http://dx.doi.org/10.1142/s021798490500813x.

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The electron spin resonance and optical absorption spectra of PbO-CdO glasses containing 1 mole% CuO have been investigated at room temperature. The optical absorption spectra of all glass samples have exhibited a broad asymmetric absorption band, which corresponds to a d–d transition of Cu 2+ ions. The prepared glass samples have been analyzed as a function of the photon energy. The results are interpreted based on the optical absorption spectral profiles and also the edge values upon the application of Davis and Mott's theory. From the ESR spectral features, the spin Hamiltonian parameters h

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15

Musina, E. I., A. V. Shamsieva, I. D. Strelnik, et al. "Synthesis of novel pyridyl containing phospholanes and their polynuclear luminescent copper(i) complexes." Dalton Transactions 45, no. 5 (2016): 2250–60. http://dx.doi.org/10.1039/c5dt03346b.

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16

Druz, N., I. Andersone, and B. Andersons. "Interaction of Copper-Containing Preservatives with Wood. Part 1. Mechanism of the Interaction of Copper with Cellulose." Holzforschung 55, no. 1 (2001): 13–15. http://dx.doi.org/10.1515/hf.2001.003.

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Summary In the present work, the state of the copper ions absorbed by cellulose from aqueous solutions with different pH values has been studied by electron spin resonance (ESR), X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray analysis (EDXA) methods. It has been shown that the curve of copper sorption has a S-like shape characteristic for weak acid sorbents. At all pH values in ESR-spectra, an anisotropic Cu(II)-signal is registered. At pH > 4, the anisotropy of ESR-spectra decreases. At pH = 10, complexes connected by exchange interactions and diamagnetic clusters are f

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17

Stenzel, Olaf, Steffen Wilbrandt, Sven Stempfhuber, Dieter Gäbler, and Sabrina-Jasmin Wolleb. "Spectrophotometric Characterization of Thin Copper and Gold Films Prepared by Electron Beam Evaporation: Thickness Dependence of the Drude Damping Parameter." Coatings 9, no. 3 (2019): 181. http://dx.doi.org/10.3390/coatings9030181.

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Copper and gold films with thicknesses between approximately 10 and 60 nm have been prepared by electron beam evaporation and characterized by spectrophotometry from the near infrared up to the near ultraviolet spectral regions. From near normal incidence transmission and reflection spectra, dispersion of optical constants have been determined by means of spectra fits utilizing a merger of the Drude model and the beta-distributed oscillator model. All spectra could be fitted in the full spectral region with a total of seven dispersion parameters. The obtained Drude damping parameters shows a c

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18

Wakita, Hisanobu, Toshio Yamaguchi, Hirohiko Adachi, Manabu Fujiwara, and Seiichi Yamashita. "A Xanes Study of Square Copper(II) Complexes." Advances in X-ray Analysis 35, B (1991): 1115–20. http://dx.doi.org/10.1154/s0376030800013380.

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AbstractThe XANES (X-ray absorption near edge structure) spectra of copper(II) ions in solid state and in solution of the square-planar copper(II) complexes with tetraaza macrocycles were measured. The peaks in the measured XANES spectra shifted to lower energy side with increasing the electron density of central copper(II) ions. The molecular orbital calculations for the complexes were carried out by the DV-Xα method, and the theoretical XANES spectra were estimated. The clear chemical shift obtained by this XANES study is evaluated and leads to a new concept of π-back donation between the co

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19

El-Tabl, Abduo S., M. M. Abd-El Wahed, and M. A. Wahba. "Spectroscopic characterization and cytotoxic activity of new metal complexes derived from (1E, N'Z, N'Z)-N',N'-bis(2-hydroxybenzylidene)-2-(naphthalen-1-yloxy) acetohydrazonohydrazide." JOURNAL OF ADVANCES IN CHEMISTRY 11, no. 9 (2015): 3888–918. http://dx.doi.org/10.24297/jac.v11i9.2681.

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Spectroscopic (IR, 1H-NMR, UV-visible, mass and ESR spectra) and structural studies of the ligand (1E, N'Z, N'Z)-N', N'-bis (2-hydroxybenzylidene)-2-(naphthalen-1-yloxy) acetohydrazonohydrazide (H2L) and its metal complexes are reported. The magnetic properties and thermal analyses (DTA and TGA) were also carried out. The IR spectra of the prepared complexes suggested that, the ligand adopted either a bidentate or a tetradentate fashion, bonding to the metal ion through the azomethine nitrogens and the two phenolic oxygen atoms (ONNO). Electronic spectra and magnetic susceptibility measurement

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20

Stillman, Martin J. "Spectroscopic Studies of Copper and Silver Binding to Metallothioneins." Metal-Based Drugs 6, no. 4-5 (1999): 277–90. http://dx.doi.org/10.1155/mbd.1999.277.

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Mammalian metallothionein is remarkable in its metal binding properties: well-characterized species exist for metal to sulfur ratios of M7S20, M12S20, and M18S20, where M = Cd(ll), Zn(ll), Hg(ll), Ag(I), Au(I), and Cu(I). Circular dichroism and luminescence spectra provide rich details of a complicated metal binding chemistry when metals are added directly to the metal free- or zinc-containing protein. CD spectral data unambiguously identify key metal to protein stoichiometric ratios that result in well-defined structures. Emission spectra in the 450-750 nm region have been reported for metall

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21

Fu, Yanhua, Hongfei Xie, Yachun Mao, Tao Ren, and Dong Xiao. "Copper Content Inversion of Copper Ore Based on Reflectance Spectra and the VTELM Algorithm." Sensors 20, no. 23 (2020): 6780. http://dx.doi.org/10.3390/s20236780.

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Copper is an important national resource, which is widely used in various sectors of the national economy. The traditional detection of copper content in copper ore has the disadvantages of being time-consuming and high cost. Due to the many drawbacks of traditional detection methods, this paper proposes a new method for detecting copper content in copper ore, that is, through the spectral information of copper ore content detection method. First of all, we use chemical methods to analyze the copper content in a batch of copper ores, and accurately obtain the copper content in those ores. Then

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22

Pauly, N., S. Tougaard, and F. Yubero. "LMM Auger primary excitation spectra of copper." Surface Science 630 (December 2014): 294–99. http://dx.doi.org/10.1016/j.susc.2014.08.029.

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23

Bovill, A. J., A. A. McConnell, J. A. Nimmo, and W. E. Smith. "Resonance Raman spectra of .alpha.-copper phthalocyanine." Journal of Physical Chemistry 90, no. 4 (1986): 569–75. http://dx.doi.org/10.1021/j100276a017.

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24

Zhang, Xin, Daniele Stradi, Lei Liu, Hong Luo, Mads Brandbyge, and Gong Gu. "Tunneling spectra of graphene on copper unraveled." Physical Chemistry Chemical Physics 18, no. 25 (2016): 17081–90. http://dx.doi.org/10.1039/c6cp01572g.

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The root cause of the variability in tunneling spectra of graphene on copper is found to be the variation in graphene–substrate coupling under various experimental conditions. This work provides a salutary perspective on the important role of 2D material–substrate interactions.

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25

Thurgate, S. M., C. P. Lund, C. Creagh, and R. Craig. "More Auger photoelectron coincidence spectra from copper." Journal of Electron Spectroscopy and Related Phenomena 93, no. 1-3 (1998): 209–14. http://dx.doi.org/10.1016/s0368-2048(98)00176-5.

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26

Soskovets, Ya B., A. Ya Khairullina, and V. A. Babenko. "Photoluminescence spectra of copper-based planar nanostructures." Journal of Applied Spectroscopy 73, no. 4 (2006): 576–82. http://dx.doi.org/10.1007/s10812-006-0121-1.

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27

Greiner, S. P., R. W. Kreilick, and K. A. Kraft. "Angle selection in ESR and ENDOR spectra of rhombic metal complexes: copper glutamate and copper [15N]glutamate spectra." Journal of the American Chemical Society 114, no. 2 (1992): 391–99. http://dx.doi.org/10.1021/ja00028a001.

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28

Olalekan, Temitope E., Adeniyi S. Ogunlaja, and Gareth M. Watkins. "SN-Donor Methylthioanilines and Copper(II) Complexes: Synthesis, Spectral Properties, and In Vitro Antimicrobial Activity." Heteroatom Chemistry 2019 (March 3, 2019): 1–7. http://dx.doi.org/10.1155/2019/9203435.

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Methylthioanilines, a series of sulfur-nitrogen donor ligands substituted with OCH3, CH3, Cl, and Br, and their copper(II) complexes have been synthesized and characterized by 1H and 13C NMR, elemental analysis, FTIR, UV-Vis and EPR spectra, molar conductance, and magnetic susceptibility measurements. The NMR spectra of the ligands revealed that the para/ortho protons and para carbon were sensitive to the electronic effect of substituents. The CHNS analysis presented CuLCl2 (L = OCH3, CH3, Cl) and CuL2Cl2 (L = Br) stoichiometries for the copper complexes. FTIR spectra showed that the bidentate

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29

Günther, Christiane, Dörte Stachel, and Lydia D. Bogomolova. "Spectral Investigation of Crystalline (CuHPO4, Cu2P4O12,and Cu2P8O22) and Glassy Copper Phosphates." Advances in Condensed Matter Physics 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/297504.

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Emerald green crystals of the new composition CuHPO4were synthesized and compared to (copper metaphosphate) Cu2P4O12and (copper ultraphosphate) Cu2P8O22. Various copper ultraphosphate and metaphosphate glasses of different compositions between pure P2O5and Cu2P4O12were melted in crucibles or in evacuated and sealed silica ampoules at 1473 K or 1373 K for 2 hrs. The UV-VIS-spectra and the IR-spectra of all crystals and glasses were measured and compared. The absorption band of Cu2+was resolved into more component Gaussian bands and differentiated between square-pyramidal and octahedrally coordi

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30

Misaizu, Fuminori, Keizo Tsukamato, Masaomi Sanekata, and Kiyokazu Fuke. "Photoelectron Spectroscopy of Mass-Selected Copper-Water Cluster Negative Ions." Laser Chemistry 15, no. 2-4 (1995): 195–207. http://dx.doi.org/10.1155/1995/68042.

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Negative-ion photoelectron spectroscopy has been applied in order to obtain size dependent information about the electronic structure of clusters of metal atoms solvated with polar molecules. In the present paper we have investigated the photoelectron spectra of Cu2-(H2O)n, cluster ions with 2 = 0–4 and also those of Cu2-(H2O)n, with n = 0 and 1. In the spectra of Cu2-(H2O)n, the lowest energy bands were assigned to the electron detachment from the CuOH-(H2O)n−1, which were produced in the source together with the above cluster ions. The observed bands for Cu2-(H2O)n were all assigned to the t

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31

Ferrari, M., D. F. Hanley, D. A. Wilson, and R. J. Traystman. "Redox changes in cat brain cytochrome-c oxidase after blood-fluorocarbon exchange." American Journal of Physiology-Heart and Circulatory Physiology 258, no. 6 (1990): H1706—H1713. http://dx.doi.org/10.1152/ajpheart.1990.258.6.h1706.

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Rapid scanning near-infrared spectroscopy (730-960 nm) was utilized to determine cat brain cytochrome-c oxidase copper band by blood-perfluorochemical emulsion (Oxypherol) exchange. Spectra were carried out before, during, and after the exchange transfusion on animals with preserved somatosensory-evoked potentials and microsphere-determined cerebral blood flow. Remaining hemoglobin (less than 4% of control) was converted to carboxyhemoglobin that does not absorb in this spectral region. Difference spectra, between an hypercapnic status (8% CO2-92% O2) and postmortem, demonstrated the presence

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32

Burnett, Bryan R. "Copper Contamination of Gunshot Residue and Other Particle Spectra." Microscopy Today 9, no. 3 (2001): 24–25. http://dx.doi.org/10.1017/s1551929500056923.

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Many scanning electron microscope (SEM) laboratories use double sticky carbon tape applied directly to SEM stubs as samplers for small particles. The SEM samplers used by law enforcement to test the hands of a suspect for gunshot residue (GSR) are constructed in this manner.A few years ago, during a presentation at a professional meeting, I presented spectra of particles that were mounted on carbon double sticky tape that was applied directly to the aluminum- alloy SEM stubs. After the presentation a colleague posited that small peaks of copper, which appeared in some of my spectra, were due t

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33

Sharrock, Patrick, and Milan Melník. "Copper(II) acetates: from dimer to monomer." Canadian Journal of Chemistry 63, no. 1 (1985): 52–56. http://dx.doi.org/10.1139/v85-009.

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The epr spectra at various frequencies of copper(II) acetate anhydrous, monohydrate, monoacetic acid, and water – acetic acid adduct are presented and analysed. The presence of copper hyperfine splittings in the solid state epr spectra of this series of compounds is discussed. The frozen solution spectrum of copper(II) acetate in acetic acid solution containing ~2% water shows an exceptional resolution of [Formula: see text] hyperfine of 24 G. This is attributed to a key intermediate which explains the monomer–dimer dissociation mechanism. The influence of distortions on the structures of thes

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34

Crosbie, Jeffrey C., Pauline Fournier, Stefan Bartzsch, et al. "Energy spectra considerations for synchrotron radiotherapy trials on the ID17 bio-medical beamline at the European Synchrotron Radiation Facility." Journal of Synchrotron Radiation 22, no. 4 (2015): 1035–41. http://dx.doi.org/10.1107/s1600577515008115.

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The aim of this study was to validate the kilovoltage X-ray energy spectrum on the ID17 beamline at the European Synchrotron Radiation Facility (ESRF). The purpose of such validation was to provide an accurate energy spectrum as the input to a computerized treatment planning system, which will be used in synchrotron microbeam radiotherapy trials at the ESRF. Calculated and measured energy spectra on ID17 have been reported previously but recent additions and safety modifications to the beamline for veterinary trials warranted a fresh investigation. The authors used an established methodology t

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35

Angel, S. M., L. F. Katz, D. D. Archibald, L. T. Lin, and D. E. Honigs. "Near-Infrared Surface-Enhanced Raman Spectroscopy. Part I: Copper and Gold Electrodes." Applied Spectroscopy 42, no. 8 (1988): 1327–31. http://dx.doi.org/10.1366/0003702884429698.

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Surface-enhanced Raman spectra of pyridine on copper and gold electrodes in the near-infrared were obtained with a Fourier transform Raman spectrometer. Surface-enhanced Raman spectra were observed for pyridine adsorbed on copper and gold electrodes while a Nd:YAG laser (1.064/μm) was used for excitation. Good-quality spectra were recorded for 0.08 mM pyridine on a copper electrode with a single oxidation-reduction cycle, whereas for a gold electrode, several ORCs were necessary. A very intense low-energy Raman band was observed on both metals at positive potentials, which may be due to a meta

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36

Brusnitsina, Ludmila A., Elena I. Stepanovskih, and Tatiana A. Alexeeva. "Kinetics of photorestoration of copper(II) in compositions on the basis of acetate of copper and the tetraftorpropianat of copper." Butlerov Communications 62, no. 4 (2020): 99–108. http://dx.doi.org/10.37952/roi-jbc-01/20-62-4-99.

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In the technology of manufacturing printed circuit boards by additive method, photoselective activation of dielectric materials is widely used. In order to obtain a given circuit pattern on the surface and in the holes of the printed circuit board it is necessary to form catalytically active centers for further chemical metallization. The aim of the work was to study the physical and chemical patterns of the photoactivation process of dielectric materials. Copper acetate (CuAc2) and copper tetrafluoropropyanate (Cu(TFP)2) having sufficiently high spectral sensitivity to UV radiation and good s

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37

Rao, B. Venkateswara, and D. M. Puri. "Copper(II) Complexes of Organophoshonic Acids-A Comparative Study." E-Journal of Chemistry 8, s1 (2011): S271—S281. http://dx.doi.org/10.1155/2011/813586.

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Polynuclear copper(II) derivatives of 1-hydroxyethylidenediphosphonic acid (HEDP), 1-aminoethylidenediphosphonic acid (AEDP, H4L),α-aminobenzylidene diphosphonic acid (ABDP, H4L), 1-amino-2-carboxyethane- 1,1-diphosphonic acid (ACEDP, H5L), 1,3 diaminopropane-1,1,3,3-tetra-phosphonic acid (DAPTP, H8L), Ethylenediamine-N,N'-bis (dimethyl-methylenephosphonic) acid (EDBDMPO, H4L),o-phenylene-diamine-N,N'-bis (dimethylmethylenephosphonic) acid (PDBDMPO, H4L), diethylene triamine –N,N,N',N',N"N-penta (methylene phosphonic) acid (DETAPMPO, H10L) and diethylene triamine –N,N"-bis (dimethyl methylene

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38

Sharma, Shubham, Pooja Rani, Sameena Mehtab, and Md Ghulam Haider Zaidi. "Polyacrylonitrile/Polysulfone Blends for Corrosion Protection of Copper." Advanced Science, Engineering and Medicine 11, no. 11 (2019): 1090–92. http://dx.doi.org/10.1166/asem.2019.2457.

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Polyacrylonitrile/polysulphone blends (PBs) was synthesized through in situ polymerization in N-methyl pyrrolidone under microwave irradiation. PBs were characterized through Uv-vis spectra and atomic force microscopy. Performance of corrosion protection of PBs of copper was investigated through electrochemical impedence spectra and DC polarization in NaCl (0.25 M). Electrochemical data reveals improved corrosion protection of copper by PBs over PSF. PBs display marginal delamination over copper at the rate of 0.53 mm/yr till 29 h. Present work demonstrates the potential of PBs towards corrosi

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39

Kawai, Jun, Katsumi Nakajima, Kuniko Maeda, and Yohichi Gohshi. "L X-Ray Line Shape of Copper(II) Compounds and their Covalency." Advances in X-ray Analysis 35, B (1991): 1107–14. http://dx.doi.org/10.1154/s0376030800013379.

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AbstractProfile changes of copper Lα (L3-V) and Lβ (L2-V) X-ray fluorescence spectra are interpreted. It is shown that the intensity of the high energy shoulder of the Cu L X-ray spectra has a relation to the intensity of the so-called ‘shake-up’ satellite in 2p X-ray photoelectron spectra; the high energy shoulder of the divalent copper La is weak for covalent compounds and strong for ionic compounds. It is also shown that the Lβ/Lα intensity ratio changes with the change of copper concentration of the analyte as well as the change of chemical state of the analyte.

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40

Carter, R. O., B. D. Poindexter, and W. H. Weber. "Vibrational spectra of copper formate tetrahydrate, copper formate dihydrate and three anhydrous forms of copper formate." Vibrational Spectroscopy 2, no. 2-3 (1991): 125–34. http://dx.doi.org/10.1016/0924-2031(91)85018-i.

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41

Sarma, Babita, and Diganta Kumar Das. "Synthesis, Spectroscopy, Thermal Analysis, Electrochemistry and Superoxide Scavenging Activity of a New Bimetallic Copper(II) Complex." Journal of Chemistry 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/349580.

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A new bimetallic copper(II) complex has been synthesized with ligand obtained by the condensation of salicylaldehyde and the amine derived from reduction of nitration product of benzil. The ligand was characterized by1H NMR and mass spectra, and the binuclear Copper(II) complex was characterized by vibrational and electronic spectra, EPR spectra, and magnetic moment measurement. Thermogravimetric analysis study and electrochemical study of the complex were also done. The complex was found to show superoxide dismutase activity.

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42

Marsh, Brett M., Jia Zhou, and Etienne Garand. "Vibrational spectroscopy of isolated copper(ii) complexes with deprotonated triglycine and tetraglycine peptides." RSC Advances 5, no. 3 (2015): 1790–95. http://dx.doi.org/10.1039/c4ra09655j.

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43

Срабионян, В. В., Г. Б. Сухарина, С. Ю. Каптелинин та ін. "Влияние термообработки на формирование активных центров меди, полученных путем взаимодействия хлорида меди с H-морденитом". Физика твердого тела 62, № 7 (2020): 1082. http://dx.doi.org/10.21883/ftt.2020.07.49477.018.

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The heat treatment effect on the formation of catalytically active copper centers obtained by solid-phase ion exchange between copper chloride and zeolite H-Mordenite was studied using X-ray absorption spectroscopy in the near edge (XANES) and extended (EXAFS) regions beyonds the copper K-edge. The spectra were measured in reaction conditions, at temperatures ranging from room temperature to 400°C. The analysis of the spectra performed by direct calculations of Cu K-XANES and Cu K-EXAFS fitting with account for anharmonic corrections showed that up to 200 ° C ion exchange does not occurs and c

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44

Cannistraro, S., and G. Giugliarelli. "Field-swept and frequency-swept E.P.R. copper spectra." Molecular Physics 58, no. 1 (1986): 173–79. http://dx.doi.org/10.1080/00268978600101051.

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45

Hipps, K. W. "Copper(II) phthalocyanine: electronic and vibrational tunneling spectra." Journal of Physical Chemistry 93, no. 16 (1989): 5958–60. http://dx.doi.org/10.1021/j100353a002.

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46

Heyns, Anton M., and Klaus-Jürgen Range. "The vibrational spectra of the copper(II) formates." Journal of Molecular Structure 162, no. 1-2 (1987): 57–67. http://dx.doi.org/10.1016/0022-2860(87)85022-6.

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47

Jarosz, G., R. Signerski, and L. Brehmer. "On dielectric spectra of thin copper phthalocyanine films." Thin Solid Films 514, no. 1-2 (2006): 287–91. http://dx.doi.org/10.1016/j.tsf.2006.02.035.

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48

Zaki, H. M., and H. A. Dawoud. "Far-infrared spectra for copper–zinc mixed ferrites." Physica B: Condensed Matter 405, no. 21 (2010): 4476–79. http://dx.doi.org/10.1016/j.physb.2010.08.018.

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49

Goldstein, Adrian, Marina Vulfson, and Marina Sirota. "Optical Spectra of Copper-Doped Zn-Phosphate Glasses." Journal of the American Ceramic Society 90, no. 11 (2007): 3680–82. http://dx.doi.org/10.1111/j.1551-2916.2007.01959.x.

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50

Baker, Anthony T. "The Ligand Field Spectra of Copper(II) Complexes." Journal of Chemical Education 75, no. 1 (1998): 98. http://dx.doi.org/10.1021/ed075p98.

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