Results 21 to 30 of about 27,185 (266)

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Sintered Sorbent Utilization for H2S Removal from Industrial Flue Gas in the Process of Smelter Slag Granulation

Записки Горного института, 2019
Authors suggest removing hydrogen sulfide from the hot industrial gas at temperatures 200-300 °C and its subsequent interaction with Fe2O3. For this purpose the following sorbents have been proposed: a mixture of iron oxide and fly ash; iron oxide and ...
A. B. Lebedev, V. A. Utkov, A. A. Khalifa   +2 more
doaj   +1 more source

Justification of the Reduction Possibility of Sulfur Oxides and Fly Ash Emissions during Co-Combustion of Coal and Waste from Woodworking Enterprises

Applied Sciences, 2021
In this work, we experimentally investigated the effect of widespread biomass (woodworking waste—pine sawdust) in the composition of mixed fuel, formed also using the widespread steam coals metalignitous (D) and lean (T), on the concentration of sulfur ...
Stanislav Yankovsky, Anton Tolokol’nikov, Alexander Gorshkov, Albina Misyukova, Geniy Kuznetsov   +4 more
doaj   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Désulfuration d'effluents gazeux de raffinerie au moyen de masses régénérables Desulfurization of Gaseous Refinery Effluents by Regenerable Masses

Oil & Gas Science and Technology, 2006
Cet article présente une nouvelle technique, en cours de développement, de désulfuration d'effluents gazeux en raffinerie. Le procédé proposé utilise une masse désulfurante régénérable à base d'oxyde de magnésium qui fixe les oxydes de soufre sous forme ...
Deschamps A., Dezael C., Courty P., Barthel Y., Franckowiak S.   +4 more
doaj   +1 more source

The oxidation of sulfur by microorganisms [PDF]

Experimental Biology and Medicine, 1920
Two groups of phenomena are to be considered in the study of the sulfur cycle: (1) the reduction phenomena and (2) the oxidation phenomena. The first result in the production of hydrogen sulfide and the second in the oxidation of H2S to S and of the latter to H2SO4. Both groups of phenomena result from activities of microorganisms.
Waksman, S. A., Joffe, J. S.
openaire   +2 more sources

Iron homeostasis disruption and lipid peroxidation in skeletal muscle during short‐term immobilization

FEBS Open Bio, EarlyView.
14‐day casting‐induced immobilization reduced gastrocnemius muscle mass and increased non‐heme iron and ferritin heavy chain levels. Despite iron accumulation, transferrin receptor 1 and iron regulatory protein 2 were paradoxically upregulated. Lipid peroxidation was elevated without compensatory antioxidant responses.
Haruka Yokogawa, Kazuhiko Higashida, Naoya Nakai   +2 more
wiley   +1 more source

Acid rain and its environmental risks

آداب الكوفة, 2010
Acid rain is formed from the reaction of sulfur-containing gases, the most important of which is sulfur dioxide, in the presence of ultraviolet radiation.
كفاح صالح الأسدي
doaj   +1 more source

Synthesis of cis-thiiranes as diastereoselective access to epoxide congeners via 4π-electrocyclization of thiocarbonyl ylides

Nature Communications, 2022
Thiirane, the sulfur congener of oxirane, has been hard to access in a stereodefined form. Here, the authors accomplished a highly stereoselective synthesis of cis-diarylthiiranes through the stereospecific sulfurization of E,E-aldazine N-oxides.
Su-min Song, Jaeseong Jin, Jun-Ho Choi, Won-jin Chung   +3 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source