Results 251 to 260 of about 101,597 (287)

Paramagnetic relaxation in high-spin ferrous compounds

Hyperfine Interactions, 1986
Measurements of three high-spin FeIIS4 complexes at various temperatures and applied magnetic fields are reported and the results are compared with those of reduced rubredoxin. Simulations of the measured spectra by means of the fully developed stochastic theory of lineshape prove that intermediate relaxation behavior is present and is determined ...
H. Winkler, A. Kostikas, V. Petrouleas, A. Simopoulos, A. X. Trautwein   +4 more
openaire   +1 more source

Evidence of critical superparamagnetism in a ferrous compound

Physics Letters A, 1974
Abstract In the Mossbauer spectra of antiferromagnetic ferrous α-Fe SO4 we observe critical superparamagnetism. The effect is indicated by the coexistence of relatively narrow hyperfine-split and paramagnetic spectra as well as a pronounced relaxational quadrupole-doublet asymmetry.
H.L. Wehner, G. Ritter, H.H.F. Wegener
openaire   +1 more source

Organic Compounds in Ferrous Foundry Process Waste Leachates

Journal of Environmental Engineering, 1993
An investigation is conducted to determine the potential for and extent of ground‐water contamination by organic matter arising from ferrous foundry solid‐waste landfills. In the laboratory, the Environmental Protection Agency's (EPA's) toxicity characteristic leaching procedure (TCLP) is used on waste samples representing nine common binder systems to
R. K. Ham, W. C. Boyle, E. C. Engroff, R. L. Fero   +3 more
openaire   +1 more source

Muffin-Tin Radii and Hyperfine Interactions in Ferrous Compounds

AIP Conference Proceedings, 1973
The hyperfine interactions in octahedral iron compounds are discussed in terms of the effective volumes available for the Fe2+ ion in the lattice, as defined by a touching non‐overlapping muffin‐tin model. The data indicate 〈r−3(t2g)〉 ∞ 〈r〉−3 varying by a factor of 3:1 over the covalency range between FeF2 and FeS.
Y. Hazony, Hugh C. Wolfe, C. D. Graham, J. J. Rhyne   +3 more
openaire   +1 more source

Recovery Nickel-Ferrous Compound from Nickel-Bearing Secondary Resources

2020
The stainless steel pickling sludge contained valuable metals such as Fe, Cr, and Ni and was a second Ni-bearing resource. It was essential to explore an economical technology for recovery metals from the low grade pickling sludge. The method of carbon thermal reduction–magnetic separation process was proposed to not only recover Fe, Cr, and Ni from ...
Qiuju Li, Songyan Liu, Caixiang Yu, Fanxi Yang, Ziyang Wang   +4 more
openaire   +1 more source

Mössbauer Study of Magnetic Properties in Ferrous Compounds

Journal of the Physical Society of Japan, 1964
Using the Mossbauer effect of Fe 57 , ferrous compounds have been investigated systematically in order to elucidate their magnetic properties from an atomic point of view. Parameters of isomer shifts, quadrupole interactions and internal magnetic fields at the iron nuclei at various temperatures are listed in Table I.
Kazuo Ôno, Atsuko Ito
openaire   +1 more source

A Novel Multistep Mechanism for Oxygen Binding to Ferrous Hemoproteins:  Rapid Kinetic Analysis of Ferrous-Dioxy Myeloperoxidase (Compound III) Formation

Biochemistry, 2004
Myeloperoxidase (MPO), a hemoprotein that uses H(2)O(2) as the electron acceptor in the catalysis of oxidative reactions, is implicated as a participant in inflammatory injury and cardiovascular diseases. Mechanisms for turning off this enzyme once released, preventing unwanted tissue injury, are poorly understood.
Husam M, Abu-Soud, Frank M, Raushel, Stanley L, Hazen   +2 more
openaire   +2 more sources

Removal of cyanide compounds from coking wastewater by ferrous sulfate: Improvement of biodegradability

Journal of Hazardous Materials, 2016
The effect of ferrous sulfate (FeSO4) treatment on the removal of cyanide compounds and the improvement of biodegradability of coking wastewater were investigated by varying Fe:TCN molar ratios. Results suggested that the reaction between FeSO4 and coking wastewater was a two-step process.
Xubiao, Yu, Ronghua, Xu, Chaohai, Wei, Haizhen, Wu   +3 more
openaire   +2 more sources

On the quadrupole splitting in ferrous compounds

Chemical Physics Letters, 1969
It is shown that the major contribution to the low temperature “saturation” value of the quadrupole splitting in ferrous compounds is independent (with a few well-defined exceptions) on the site symmetry of the Fe2+ ion. This explains the experimental fact that the measured values of this quantity in most compounds fall within ≈ 20% of each other.
openaire   +1 more source

Corrosion of Ferrous Alloys by Organic Compounds in Simulated Bio-Oils

CORROSION 2019, 2019
Absrract Bio-oils derived from biomass contain organic species and acids that can be corrosive to steel-based structural materials used for pipelines and storage tanks. It is, therefore, important to assess corrosivity of organic constituents in bio-oils and identify ferrous alloys with sufficient corrosion resistance.
Jiheon Jun, Matthew G Frith, Raynella M Connatser, James R Keiser, Michael P Brady, Samuel Lewis   +5 more
openaire   +1 more source