Faculty Opinions recommendation of CopK from Cupriavidus metallidurans CH34 binds Cu(I) in a tetrathioether site: characterization by X-ray absorption and NMR spectroscopy.

Author(s):  
James Penner-Hahn
2010 ◽  
Vol 132 (11) ◽  
pp. 3770-3777 ◽  
Author(s):  
Géraldine Sarret ◽  
Adrien Favier ◽  
Jacques Covès ◽  
Jean-Louis Hazemann ◽  
Max Mergeay ◽  
...  

2006 ◽  
Vol 72 (9) ◽  
pp. 6414-6416 ◽  
Author(s):  
Laure Avoscan ◽  
Richard Collins ◽  
Marie Carriere ◽  
Barbara Gouget ◽  
Jacques Cov�s

ABSTRACT The accumulated organic form of selenium previously detected by X-ray absorption near-edge structure (XANES) analyses in Cupriavidus metallidurans CH34 exposed to selenite or selenate was identified as seleno-l-methionine by coupling high-performance liquid chromatography to inductively coupled plasma-mass spectrometry.


2009 ◽  
Vol 75 (7) ◽  
pp. 2250-2252 ◽  
Author(s):  
Laure Avoscan ◽  
Marie Carrière ◽  
Olivier Proux ◽  
Géraldine Sarret ◽  
Jéril Degrouard ◽  
...  

ABSTRACT Cupriavidus metallidurans CH34 cells grown under sulfate-limited conditions accumulated up to six times more selenate than cells grown in sulfate-rich medium. The products of selenate reduction detected by X-ray absorption spectroscopy, electron microscopy, and energy-dispersive X-ray analysis did not define this strain as being a good candidate for bioremediation of selenate-contaminated environments.


2017 ◽  
Vol 46 (22) ◽  
pp. 7223-7231 ◽  
Author(s):  
John B. Brazier ◽  
Mark A. Newton ◽  
Elena M. Barreiro ◽  
Luis A. Adrio ◽  
Leticia Naya ◽  
...  

The nuclearity and structures of the palladium complex [(SPhos)Pd(Ph)Cl]2 in the solid and solution states are revisited using a combination of Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy, NMR spectroscopy, mass spectrometry, DFT calculations and trapping experiments.


2017 ◽  
Vol 8 (8) ◽  
pp. 5650-5661 ◽  
Author(s):  
Janet C. Mohandas ◽  
Edy Abou-Hamad ◽  
Emmanuel Callens ◽  
Manoja K. Samantaray ◽  
David Gajan ◽  
...  

SOMC is exploited for synthesizing very fine nanoparticles of TaxNy/TaOxNy on silica, elucidating the strategies with DNP SENS and EXAFS.


2010 ◽  
Vol 63 (5) ◽  
pp. 845 ◽  
Author(s):  
Christopher Hardacre ◽  
Richard W. Murphy ◽  
Kenneth R. Seddon ◽  
Geetha Srinivasan ◽  
Małgorzata Swadźba-Kwaśny

A range of ionic liquids was prepared by mixing 1-alkyl-3-methylimidazolium chloride with gallium(iii) chloride or indium(iii) chloride in various ratios, producing both acidic and basic compositions. Their speciation was investigated using 71Ga NMR or 115In NMR spectroscopy, as well as extended X-ray absorption fine structure. Polynuclear Lewis acidic anions, [MxCl3x+1]–, were found in chlorogallate(iii) ionic liquids, but not in chloroindate(iii) systems.


2002 ◽  
Vol 5 (11) ◽  
pp. A263 ◽  
Author(s):  
Won-Sub Yoon ◽  
Younkee Paik ◽  
Xiao-Qing Yang ◽  
Mahalingam Balasubramanian ◽  
James McBreen ◽  
...  

2018 ◽  
Vol 122 (6) ◽  
pp. 3233-3244 ◽  
Author(s):  
Z. Blossom Yan ◽  
Robin Hayes ◽  
Lis G. A. Melo ◽  
Gillian R. Goward ◽  
Adam P. Hitchcock

Author(s):  
G. Cliff ◽  
M.J. Nasir ◽  
G.W. Lorimer ◽  
N. Ridley

In a specimen which is transmission thin to 100 kV electrons - a sample in which X-ray absorption is so insignificant that it can be neglected and where fluorescence effects can generally be ignored (1,2) - a ratio of characteristic X-ray intensities, I1/I2 can be converted into a weight fraction ratio, C1/C2, using the equationwhere k12 is, at a given voltage, a constant independent of composition or thickness, k12 values can be determined experimentally from thin standards (3) or calculated (4,6). Both experimental and calculated k12 values have been obtained for K(11<Z>19),kα(Z>19) and some Lα radiation (3,6) at 100 kV. The object of the present series of experiments was to experimentally determine k12 values at voltages between 200 and 1000 kV and to compare these with calculated values.The experiments were carried out on an AEI-EM7 HVEM fitted with an energy dispersive X-ray detector.


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