Rock magnetism linked to human brain magnetite
نویسندگان
چکیده
منابع مشابه
Magnetite biomineralization in the human brain.
Although the mineral magnetite (Fe3O4) is precipitated biochemically by bacteria, protists, and a variety of animals, it has not been documented previously in human tissue. Using an ultrasensitive superconducting magnetometer in a clean-lab environment, we have detected the presence of ferromagnetic material in a variety of tissues from the human brain. Magnetic particle extracts from solubiliz...
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Biologically formed nanoparticles of the strongly magnetic mineral, magnetite, were first detected in the human brain over 20 y ago [Kirschvink JL, Kobayashi-Kirschvink A, Woodford BJ (1992) Proc Natl Acad Sci USA 89(16):7683-7687]. Magnetite can have potentially large impacts on the brain due to its unique combination of redox activity, surface charge, and strongly magnetic behavior. We used m...
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We rcpmt results on the magnetic properties of magnetites produced by magnetotaetie and dissimilatory iron-reducing bacteria. Magnetotactic bacterial (MTB) strains MS I. MV J and MV2 and dissimilatory iron-reducing bacterium ,train GS-15. grown in pure cultures, were used in this study, Our results suggest that a comhination of room tempnature coercivity analysis and low temperature remanence m...
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Curium lies at the center of the actinide series and has a half-filled shell with seven 5f electrons spatially residing inside its radon core. As a function of pressure, curium exhibits five different crystallographic phases up to 100 gigapascals, of which all but one are also found in the preceding element, americium. We describe here a structure in curium, Cm III, with monoclinic symmetry, sp...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 1994
ISSN: 0096-3941
DOI: 10.1029/94eo00859