Results 251 to 260 of about 1,875,150 (304)

Native Iron in Siberian Traps

Petrology, 2023
The results of study of intrusive traps with a large-scale occurrence of native iron allowed us to identify general patterns of their composition and origin. Intrusive bodies are weakly differentiated; they feature a similar structure and mineralogical, petrochemical and geochemical composition.
M. D. Tomshin, A. G. Kopylova, A. E. Vasilyeva   +2 more
exaly   +2 more sources

Native Mass Spectrometry of Iron-Sulfur Proteins

2021
Iron-sulfur clusters constitute a large and widely distributed group of protein cofactors that play key roles in a wide range of metabolic processes. The inherent reactivity of iron-sulfur clusters toward small molecules, for example, O2, NO, or free Fe, makes them ideal for sensing changes in the cellular environment.
Crack, Jason C., Le Brun, Nick E.
openaire   +3 more sources

Native iron in the Earth and space

Izvestiya, Physics of the Solid Earth, 2017
© 2017, Pleiades Publishing, Ltd. Thermomagnetic and microprobe studies of native iron in the terrestrial upper-mantle hyperbasites (xenoliths in basalts), Siberian traps, and oceanic basalts are carried out. The results are compared to the previous data on native iron in sediments and meteorites.
Pechersky D., Kuzina D., Markov G., Tsel’movich V.   +3 more
openaire   +3 more sources

Native iron in Miocene sediments

Russian Journal of Earth Sciences, 2008
[1] With the aid of thermomagnetic analysis up to 800◦C we studied the detailed pattern of how native iron is distributed in Miocene sediments of two sections, Khalats (Turkmenia) and Kvirinaki (Georgia), which are more than 1500 km apart. Out main result is that enrichment by native iron particles was synchronous in both sections.
D. M. Pechersky, D. K. Nurgaliev, V. M. Trubikhin   +2 more
openaire   +1 more source

Thermomagnetic evidence of native iron in sediments

Izvestiya, Physics of the Solid Earth, 2012
The paper summarizes the results of thermomagnetic analysis concerning the distribution of metallic iron in the sediments ranging in age from Miocene to Early Cretaceous sampled from the following sections: Gams (Austria); Verkhorech’e and Sel’bukhra (the Crimea); Kvirinaki and Tetritskaro (Georgia); Aimaki, Dzhengutai, Madzhalis, and Gergebil ...
D M Pechersky
exaly   +2 more sources

Reconstituted and native iron-cores of bacterioferritin and ferritin

Journal of Molecular Biology, 1987
The structural and magnetic properties of the iron-cores of reconstituted horse spleen ferritin and Azotobacter vinelandii bacterioferritin have been investigated by high-resolution transmission electron microscopy, electron diffraction and Mossbauer spectroscopy. The structural properties of native horse spleen ferritin, native Az.
S, Mann, J M, Williams, A, Treffry, P M, Harrison   +3 more
openaire   +2 more sources

Native Iron Occurrences of Disko Island, Greenland

The Journal of Geology, 1977
Field and petrographic relations indicate that the commonly accepted theory that the native iron of Disko formed by reduction of basalt or sulphides by inclusions of coal or carbonaceous sediments during eruption of basalt is not valid. Current models for basalt generation indicate that basalts are erupted through lithosphere.
John M. Bird, Maura S. Weathers
openaire   +1 more source