Search Results - "Cramer, S. P"

Intact blood−brain barrier during spontaneous attacks of migraine without aura: a 3T DCE‐MRI study by Amin, F. M., Hougaard, A., Cramer, S. P., Christensen, C. E., Wolfram, F., Larsson, H. B. W., Ashina, M.

“…Background and purpose The integrity of the blood−brain barrier (BBB) has been questioned in migraine, but BBB permeability has never been investigated during…”
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Synchrotron X-ray analyses demonstrate phosphate-bound gadolinium in skin in nephrogenic systemic fibrosis by George, S.J., Webb, S.M., Abraham, J.L., Cramer, S.P.

“…Summary Background  Nephrogenic systemic fibrosis (NSF) is an incurable, debilitating disease found exclusively in patients with decreased kidney function and…”
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Structural investigations of LiFePO4 electrodes and in situ studies by Fe X-ray absorption spectroscopy by DEB, Aniruddha, BERGMANN, Uwe, CRAMER, S. P, CAIRNS, Elton J

“…Fe K-edge X-ray absorption near edge spectroscopy (XANES) and extended X-ray absorption fine structure (EXAFS) have been performed on electrodes containing…”
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X-ray absorption spectroscopy study of the LixFePO4 cathode during cycling using a novel electrochemical in situ reaction cell by Deb, Aniruddha, Bergmann, Uwe, Cairns, Elton J, Cramer, S P

“…The extraction and insertion of lithium in LiFePO4 has been investigated in practical Li-ion intercalation electrodes for Li-ion batteries using Fe K-edge…”
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X-ray Raman Spectroscopy of Carbon in Asphaltene:  Light Element Characterization with Bulk Sensitivity by Bergmann, Uwe, Mullins, Oliver C, Cramer, S. P

“…X-ray Raman spectra of the carbon K-edge have been recorded using 6.461 keV radiation for a petroleum asphaltene. By comparison with coronene, graphite, and…”
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Abnormal blood-brain barrier permeability in normal appearing white matter in multiple sclerosis investigated by MRI by Cramer, S P, Simonsen, H, Frederiksen, J L, Rostrup, E, Larsson, H B W

“…To investigate whether blood-brain barrier (BBB) permeability is disrupted in normal appearing white matter in MS patients, when compared to healthy controls…”
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Carbon K-edge X-ray Raman spectroscopy supports simple, yet powerful description of aromatic hydrocarbons and asphaltenes by Bergmann, Uwe, Groenzin, Henning, Mullins, Oliver C., Glatzel, Pieter, Fetzer, John, Cramer, S.P.

“…The nature and distribution of electron density in polycyclic aromatic hydrocarbons (PAHs) determines PAH properties. Theoretical investigations have yielded…”
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Nickel L-Edge Soft X-ray Spectroscopy of Nickel−Iron Hydrogenases and Model CompoundsEvidence for High-Spin Nickel(II) in the Active Enzyme by Wang, Hongxin, Ralston, C. Y, Patil, D. S, Jones, R. M, Gu, W, Verhagen, M, Adams, M, Ge, P, Riordan, C, Marganian, C. A, Mascharak, P, Kovacs, J, Miller, C. G, Collins, T. J, Brooker, S, Croucher, P. D, Wang, Kun, Stiefel, E. I, Cramer, S. P

“…L-edge X-ray absorption spectroscopy has been used to study, under a variety of conditions, the electronic structure of Ni in the Ni−Fe hydrogenases from…”
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Fluorescence-detected X-ray magnetic circular dichroism of well-defined Mn(II) and Ni(II) doped in MgO crystals: credential evaluation for measurements on biological samples by Wang, Hongxin, Bryant, Craig, LeGros, M, Wang, Xin, Cramer, S P

“…L(2,3)-edge X-ray magnetic circular dichroism (XMCD) spectra have been measured for the well-defined dilute Ni(II) and Mn(II) ions doped into a MgO crystal,…”
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Origin of chemical shift of manganese in lithium battery electrode materials—a comparison of hard and soft X-ray techniques by Braun, A, Wang, HongXin, Bergmann, U, Tucker, M.C, Gu, Weiwei, Cramer, S.P, Cairns, E.J

“…L-edge X-ray absorption near edge spectroscopy and K β emission spectroscopy were applied to monitor ex situ chemical valence changes of manganese in battery…”
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Ligand field strengths and oxidation states from manganese L-edge spectroscopy by Cramer, S. P, DeGroot, F. M. F, Ma, Y, Chen, C. T, Sette, F, Kipke, C. A, Eichhorn, D. M, Chan, M. K, Armstrong, W. H

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Characterization of the Mn Oxidation States in Photosystem II by Kβ X-ray Fluorescence Spectroscopy by Bergmann, U, Grush, M. M, Horne, C. R, DeMarois, P, Penner-Hahn, J. E, Yocum, C. F, Wright, D. W, Dubé, Armstrong, W. H, Christou, G, Eppley, H. J, Cramer, S. P

“…The nature of the Mn oxidation states involved in photosynthetic oxygen evolution has remained controversial, despite intense study by X-ray absorption and…”
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Characterization of Heterogeneous Nickel Sites in CO Dehydrogenases from Clostridium thermoaceticum and Rhodospirillum rubrum by Nickel L-Edge X-ray Spectroscopy by Ralston, C. Y, Wang, Hongxin, Ragsdale, S. W, Kumar, M, Spangler, N. J, Ludden, P. W, Gu, W, Jones, R. M, Patil, D. S, Cramer, S. P

“…Carbon monoxide dehydrogenase from Clostridium thermoaceticum (Ct-CODH) is a nickel-containing enzyme that catalyzes acetyl-CoA synthesis and CO oxidation at…”
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Refinement of the nickel site structure in Desulfovibrio gigas hydrogenase using range-extended EXAFS spectroscopy by Gu, Weiwei, Jacquamet, L., Patil, D.S., Wang, H-X., Evans, D.J., Smith, M.C., Millar, M., Koch, S., Eichhorn, D.M., Latimer, M., Cramer, S.P.

“…We have reexamined the Ni EXAFS of oxidized, inactive (as-isolated) and H 2 reduced Desulfovibrio gigas hydrogenase. Better spatial resolution was achieved by…”
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X-Ray Raman Spectroscopy-A New Tool to Study Local Structure of Aromatic Hydrocarbons and Asphaltenes by Bergmann, Uwe, Groenzin, Henning, Mullins, Oliver C., Glatzel, Pieter, Fetzer, John, Cramer, S. P.

“…Polycyclic aromatic hydrocarbons (PAHs) are essential components in numerous natural and man made organic compounds. In asphaltenes, knowledge of the…”
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Fe and Mo EXAFS of Azotobacter vinelandii Nitrogenase in Partially Oxidized and Singly Reduced Forms by Christiansen, J, Tittsworth, R. C, Hales, B. J, Cramer, S. P

“…Fe and Mo K-edge EXAFS spectra of the nitrogenase MoFe protein in the indigo disulfonate (IDS) oxidized form and under slow turnover conditions have been…”
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Iron EXAFS of Azotobacter vinelandii nitrogenase Mo-Fe and V-Fe proteins by CHEN, J, CHRISTIANSEN, J, TITTSWORTH, R. C, HALES, B. J, GEORGE, S. J, COUCOUVANIS, D, CRAMER, S. P

“…The structure of the iron sites of nitrogenase in dithionite-reduced and thionine-oxidized forms of the Mo-Fe and V-Fe proteins has been investigated using Fe…”
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Manganese L-Edge X-ray Absorption Spectroscopy of Manganese Catalase from Lactobacillus plantarum and Mixed Valence Manganese Complexes by Grush, M. M, Chen, J, Stemmler, T. L, George, S. J, Ralston, C. Y, Stibrany, R. T, Gelasco, A, Christou, G, Gorun, S. M, Penner-Hahn, J. E, Cramer, S. P

“…The first Mn L-edge absorption spectra of a Mn metalloprotein are presented in this paper. Both reduced and superoxidized Mn catalase have been examined by…”
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Integrated X-ray L Absorption Spectra. Counting Holes in Ni Complexes by Wang, Hongxin, Ge, Pinghua, Riordan, C. G, Brooker, S, Woomer, C. G, Collins, T, Melendres, C. A, Graudejus, O, Bartlett, N, Cramer, S. P

“…Despite the fact that chemists frequently draw electron density distributions, there are few good methods for measuring this quantity, which has contributed to…”
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Electronic Structure and Symmetry in Nickel L Edge X-ray Absorption Spectroscopy: Application to a Nickel Protein by van Elp, J, Peng, G, Searle, B. G, Mitra-Kirtley, S, Huang, Y. H, Johnson, M. K, Zhou, Z. H, Adams, M. W. W, Maroney, M. J, Cramer, S. P

“…We have studied the effects of electronic structure and symmetry on Ni L sub(2.3) edge X-ray absorption spectra by measuring the L sub(2,3) edges of several…”
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