-Greigites from a gtey and a Tertiary sediment were investigated by X-ray diffraction and M6ssbauer spectroscopy. The cell-edge length a of 9.8639/~ + 0.0003 A, for the soil greigite was significantly smaller than that of the sedimentary greigite (9.8737 A, + 0.0004 A,), but both cell-edge lengths were smaller than the value given on JCPDS card #16-713 (9.876 ~,). Both greigites had 440 as stro...

-The application of Mossbauer spectra to the study of the state of iron atoms in biological ~nolecules is described. The chetiiical shift when suitably calibrated enables the oxidation state of the iron to be determined. The magnetic hyperfine coupling is even more sensitive to the state of the iron and for iron-sulphur proteins provides direct evidence that groups of iron atoms are strongly co...

Low temperature electron paramagnetic resonance absorption spectra of randomly oriented preparations of cytochrome c peroxidase, ferrimyoglobin, ferrimyoglobin-azide, and ferrimyoglobin-fluoride are measured in various physical states. In general, the line width of resonance absorptions increases in relation to the physical state of preparation in the following order: concentrated solutions < w...

How can you change your mind to be more open? There many sources that can help you to improve your thoughts. It can be from the other experiences and also story from some people. Book is one of the trusted sources to get. You can find so many books that we share here in this website. And now, we show you one of the best, the applications of the mossbauer effect in chemistry and solid state phys...

Several species of bacteria from both fresh water and marine enviornments were observed to orient and swim in a preferred direction in the geomag­ netic field (magnetotaxis) [1, 2J. Kalmijn and Blakemore [2] observed that most of the magneto­ tactic bacteria in sediments oriented and swam along magnetic field lines toward the north. Rever­ sal of the ambient magnetic field with Helmholtz coils ...

Homogeneous single crystals of EuO, Eu rich EuO and Gd doped EuO have been obtained and characterized by X-ray, microprobe analysis;Mossbauer, infrared spectroscopy and resistivity measurements versus temperature. Photoconductivity, Hall effect, optical and magnetic measurements are reported. They are interpreted within a simple model taking into account Coulomb, kinetic and exchange energies a...

Heterojunction catalysts have drawn increasing interest for the visible light-driven Fenton reaction and bring tremendous opportunities environmental remediation. Herein, a BiOI/MIL-53(Fe) Z-scheme heterojunction (named BMFe) was synthesized first time via facile strategy. Compared with pristine BiOI MIL-53(Fe) catalysts, two-dimensional/three-dimensional (2D/3D) catalyst manifested remarkable ...