Reactivity of the laccase trinuclear copper active site with dioxygen: an x-ray absorption edge study

1990 ◽  
Vol 112 (6) ◽  
pp. 2243-2249 ◽  
Author(s):  
James L. Cole ◽  
Grace O. Tan ◽  
Edward K. Yang ◽  
Keith O. Hodgson ◽  
Edward I. Solomon
Keyword(s):  
Absorption Edge ◽  
Active Site ◽  
X Ray ◽  
X Ray Absorption

X-ray absorption edge fine structure spectroscopy of the active site haem of cytochrome c

Nature ◽  
1979 ◽  
Vol 277 (5692) ◽  
pp. 150-151 ◽  
Author(s):  
A. LABHARDT ◽  
C. YUEN
Keyword(s):  
Fine Structure ◽  
Cytochrome C ◽  
Absorption Edge ◽  
Active Site ◽  
X Ray ◽  
X Ray Absorption

X-Ray absorption edge elemental imaging of B. thuringienis

1989 ◽  
Vol 47 ◽  
pp. 212-213
Author(s):  
R. L. Stears
Keyword(s):  
Absorption Edge ◽  
Elemental Distribution ◽  
X Rays ◽  
Differential Absorption ◽  
Synchrotron Source ◽  
High Brightness ◽  
X Ray ◽  
Elemental Imaging ◽  
Cellular Integrity ◽  
X Ray Absorption

Because of the nature of the bacterial endospore, little work has been done on analyzing their elemental distribution and composition in the intact, living, hydrated state. The majority of the qualitative analysis entailed intensive disruption and processing of the endospores, which effects their cellular integrity and composition.Absorption edge imaging permits elemental analysis of hydrated, unstained specimens at high resolution. By taking advantage of differential absorption of x-ray photons in regions of varying elemental composition, and using a high brightness, tuneable synchrotron source to obtain monochromatic x-rays, contact x-ray micrographs can be made of unfixed, intact endospores that reveal sites of elemental localization. This study presents new data demonstrating the application of x-ray absorption edge imaging to produce elemental information about nitrogen (N) and calcium (Ca) localization using Bacillus thuringiensis as the test specimen.

Evidence of x-ray absorption-edge shift as a function of luminescence wavelength in porous silicon

2000 ◽  
Vol 62 (15) ◽  
pp. 9911-9914 ◽  
Author(s):  
G. Dalba ◽  
N. Daldosso ◽  
P. Fornasini ◽  
M. Grimaldi ◽  
R. Grisenti ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Absorption Edge ◽  
X Ray ◽  
Absorption Edge Shift ◽  
X Ray Absorption

Chemical Effect on X-Ray Absorption-Edge Fine Structure

1966 ◽  
pp. 376-392 ◽  
Author(s):  
E. W. White ◽  
H. A. McKinstry
Keyword(s):  
Fine Structure ◽  
Absorption Edge ◽  
Chemical Effect ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Imaging at an x-ray absorption edge using free electron laser pulses for interface dynamics in high energy density systems

2017 ◽  
Vol 88 (5) ◽  
pp. 053501 ◽  
Author(s):  
M. A. Beckwith ◽  
S. Jiang ◽  
A. Schropp ◽  
A. Fernandez-Pañella ◽  
H. G. Rinderknecht ◽  
...  
Keyword(s):  
Energy Density ◽  
Absorption Edge ◽  
Free Electron ◽  
Free Electron Laser ◽  
Laser Pulses ◽  
High Energy ◽  
High Energy Density ◽  
Interface Dynamics ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Preliminary investigation of chlorine speciation in zirconolite glass-ceramics for plutonium residues by analysis of Cl K-edge XANES

MRS Advances ◽  
2019 ◽  
Vol 5 (1-2) ◽  
pp. 37-43
Author(s):  
Amber R. Mason ◽  
Stephanie M. Thornber ◽  
Martin C. Stennett ◽  
Laura J. Gardner ◽  
Dirk Lützenkirchen-Hecht ◽  
...  
Keyword(s):  
Chemical Shift ◽  
Absorption Edge ◽  
Glass Ceramic ◽  
Glass Phase ◽  
Preliminary Investigation ◽  
Glass Ceramics ◽  
Local Environment ◽  
Aluminosilicate Glass ◽  
X Ray ◽  
X Ray Absorption

ABSTRACTA zirconolite glass-ceramic material is a candidate wasteform for immobilisation of chlorine contaminated plutonium residues, in which plutonium and chlorine are partitioned to the zirconolite and aluminosilicate glass phase, respectively. A preliminary investigation of chlorine speciation was undertaken by analysis of Cl K-edge X-ray Absorption Near Edge Spectroscopy (XANES), to understand the incorporation mechanism. Cl was found to be speciated as the Cl- anion within the glass phase, according to the characteristic chemical shift of the X-ray absorption edge. By comparison with Cl K-edge XANES data acquired from reference compounds, the local environment of the Cl- anion is most closely approximated by the mineral marialite, in which Cl is co-ordinate to 4 x Na and/or Ca atoms.

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