A5109952260- Magnetism in coordination complexes
- Electron Spin Resonance Studies
- Metal complexes synthesis and properties
- Inorganic and Organometallic Chemistry
- Hemoglobin structure and function
- Organometallic Complex Synthesis and Catalysis
- Photosynthetic Processes and Mechanisms
- Lanthanide and Transition Metal Complexes
- Metal-Catalyzed Oxygenation Mechanisms
- Porphyrin Metabolism and Disorders
- Inorganic Chemistry and Materials
- Organic and Molecular Conductors Research
- Advanced Combustion Engine Technologies
- Radical Photochemical Reactions
- Polyoxometalates: Synthesis and Applications
- Combustion and Detonation Processes
- Electrochemical Analysis and Applications
- Protein Structure and Dynamics
- Photochemistry and Electron Transfer Studies
- Medical Imaging and Pathology Studies
- Synthesis and characterization of novel inorganic/organometallic compounds
- Metalloenzymes and iron-sulfur proteins
- Molecular spectroscopy and chirality
- Molecular Junctions and Nanostructures
- Free Radicals and Antioxidants
University of New Hampshire
2014
DePaul University
2013
Georgia Institute of Technology
2009
Imperial College London
1967-1993
MRC Clinical Trials Unit at UCL
1984
University of London
1968-1982
Queen Elizabeth Hospital
1982
University of Bristol
1975
Universidad de Londres
1968
King's College London
1966-1967
The electron spin resonance spectra of polycrystalline samples some sideramines (coprogen, ferrichrysin, ferricrocin, and ferrirubin), transferrin, conalbumin are reported both at 9.3 36 kMc/sec various temperatures. These results have been interpreted in terms a Hamiltonian the form H = gβH·S + D[Sz2 − 13S(S 1)] E(Sx2 Sy2). application this interpretation to other high-spin d5 systems single-crystal is discussed.
1. An electron-spin-resonance signal with g( parallel)2.08 and perpendicular)2.00 is observed by the rapid-freezing technique during oxidation of substrates molecular oxygen catalysed xanthine oxidase at pH10. 2. The intensity this shown to depend on rather than enzyme concentration, indicating that it due an free radical not enzyme. 3. same species be produced in reaction pH10 between hydrogen peroxide periodate ions. Studies system have facilitated comparison properties data literature...
J. F. Gibson, D. E. Ingram and Schonland, Discuss. Faraday Soc., 1958, 26, 72 DOI: 10.1039/DF9582600072
The application of electron-spin resonance to the study haemoglobin derivatives is outlined in this paper and particular advantages method are considered. It shown that detailed information can be obtained concerning central iron atom its immediate surroundings. This divided into two kinds, first concerned with electronic state type chemical binding nearest neighbours, and, secondly, concerned symmetry atom’s surroundings thus orientation haem planes. therefore possible, by studying angular...
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Abstract The electron paramagnetic resonance spectra of aqueous solutions both transferrin and conalbumin have been studied as a function increasing sodium perchlorate concentration. Characteristic changes are observed which provide direct evidence for distinction between the two metal-binding sites under certain conditions in naturally occurring iron derivatives each protein. This may be physiological importance case transferrin. Differences behavior proteins were also observed.
Plane Couette flow transitions to turbulence at Re ≈ 325 even though the laminar solution with a linear profile is linearly stable for all (Reynolds number). One starting point understanding this subcritical transition existence of invariant sets in state space Navier–Stokes equation, such as upper and lower branch equilibria periodic relative solutions, that are distinct from solution. This article reports several heteroclinic connections between objects briefly describes numerical method...
Haemosiderin was isolated from thalassaemic human spleens by centrifugation through concentrated KI solutions. A method for solubilizing haemosiderin developed which leaves the iron oxyhydroxide cores and constituent polypeptides intact, facilitating further purification analysis. Purified contained no detectable haem, trace amounts of carbohydrate, phosphorus in a molar ration 6:1; much phosphate may be present as core-adsorbed. Several lipids were present, but it is not certain whether...
Electronic and e.s.r. spectra have been measured for the compounds MnL4X2(L =γ-picoline, X = Cl, Br, I, NCS; L =β-picoline, Br; 3,5-lutidine, I; 3-ethylpyridine, 3-bromopyridine, 3,5-dichloropyridine, I), some complexes MnL2X2 with same neutral ligands. The of most 4:1 show absorption away from geff= 2, are interpreted in terms zero-field splitting parameters D λ. essentially axial symmetry, range 0·035 to 0·87 cm–1, λ close zero.
The e.p.r. spectra of a number ferric complexes with sulphur-containing ligands have been recorded, and interpreted in terms the appropriate spin-Hamiltonian. studied were mainly low-spin (S=½) or high-spin (S=5//2), including some which exhibit 'spin-equilibrium'. In latter case, it has possible to observe separate signals from 'high' 'low'-spin forms.
Abstract We present an equilibrium solution of plane Couette flow that is exponentially localized in both the spanwise and streamwise directions. The similar size structure to previously computed turbulent spots localized, chaotically wandering edge states flow. A linear analysis dominant terms Navier–Stokes equations shows how exponential decay rate wall-normal overhang profile tails are governed by Reynolds number wavenumber. Perturbations along its leading eigenfunctions cause rapid...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT(Trimethylsilyl)methylidene and (trimethylsilyl)methylidyne compounds of molybdenum tungsten: (Me3SiCH2)3M.tplbond.CSiMe3 (M = tungsten) (Me3SiCH2)3Mo:CHSiMe3R. A. Andersen, M. H. Chisholm, J. F. Gibson, W. Reichert, I. P. Rothwell, G. WilkinsonCite this: Inorg. Chem. 1981, 20, 11, 3934–3936Publication Date (Print):November 1, 1981Publication History Published online1 May 2002Published inissue 1 November...