Results 51 to 60 of about 1,130,858 (355)

Carbon Nanotubes by a CVD Method. Part I: Synthesis and Characterization of the (Mg, Fe)O Catalysts [PDF]

, 2002
The controlled synthesis of carbon nanotubes by chemical vapor deposition requires tailored and wellcharacterized catalyst materials. We attempted to synthesize Mg1-xFexO oxide solid solutions by the combustion route, with the aim of performing a ...
Alvarez W. E., Bacsa R. R., Bacsa R. R., Berthet A. Ph.D., Bhide V. G., Blank S. L., Boudart M., Brynestad J., Carles V., Coquay P., Coquay P., De Bakker P. Ph.D., De Grave E., Flahaut E., Flahaut E., Govindaraj A., Hafner J. H., Herrera J. E., Holland T. J. B., Jain S. R., Jing J., Kingsley J. J., Krawitz A., Laurent, Laurent, Li Y., Patil K. C., Peigney A., Peigney A., Peigney A., Perez A., Quénard O., Simkin D. J., Topsoe H., Trinel-Dufour M. C., Vandenberghe R. E., Waychunas G. A., Woods K. N., Yamaguchi G., Zhang Y.   +39 more
core   +3 more sources

Efficacy and Safety Analysis of Roxarestat in Regulating Renal Anemia in Patients on Maintenance Hemodialysis

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley   +1 more source

Novel Extracellular Electron Transfer Channels in a Gram-Positive Thermophilic Bacterium

Frontiers in Microbiology, 2021
Biogenic transformation of Fe minerals, associated with extracellular electron transfer (EET), allows microorganisms to exploit high-potential refractory electron acceptors for energy generation.
Sergey N. Gavrilov, Daria G. Zavarzina, Ivan M. Elizarov, Tamara V. Tikhonova, Natalia I. Dergousova, Vladimir O. Popov, Vladimir O. Popov, Jonathan R. Lloyd, David Knight, Mohamed Y. El-Naggar, Sahand Pirbadian, Kar Man Leung, Frank T. Robb, Maksim V. Zakhartsev, Orianna Bretschger, Elizaveta A. Bonch-Osmolovskaya, Elizaveta A. Bonch-Osmolovskaya   +16 more
doaj   +1 more source

Ferritins: furnishing proteins with iron [PDF]

, 2016
Ferritins are a superfamily of iron oxidation, storage and mineralization proteins found throughout the animal, plant, and microbial kingdoms. The majority of ferritins consist of 24 subunits that individually fold into 4-α-helix bundles and assemble in ...
A Crow, A Treffry, AG Frey, CC Philpott, DM Lawson, DM Lawson, E Wajnberg, EC Theil, EC Theil, EC Theil, EC Theil, EI Stiefel, ER Bauminger, F Barceló, F Bou-Abdallah, FA Fischbach, FA Fischbach, FH Kadir, FHA Kadir, GC Ford, GC Papaefthymiou, GD Watt, GD Watt, Geoffrey R. Moore, GR Moore, H Abdul-Tehrani, H Aitken-Rogers, H Shi, H Yao, H Yao, H Yao, J Yariv, J-F Ma, JD López-Castro, JD Mancias, JM Bradley, JM Bradley, JS Rohrer, Justin M. Bradley, L Swartz, L Toussaint, MA Quail, MJ O’Connell, ML Vasil, MR Cheesman, ND Chasteen, NE Brun Le, NE Brun Le, NE Brun Le, Nick E. Le Brun, NM Reid, O Sadeghi, P Arosio, P Doig, PD Hempstead, PL Ringeling, PM Harrison, PM Harrison, RF Boyer, RJ Ward, RK Behera, RP Garg, S Bereswill, S Granick, S Granick, S Levi, S Macedo, S Mann, S Mann, S Pfaffen, SC Andrews, SC Andrews, SG Wong, SK Weeratunga, T Asano, T Douglas, T Jones, T Tosha, TJ Stillman, TV O’Halloran, TZ Kidane, V Laufberger, VJ Wade, WH Massover, X Liu, X Yang, Y Ha, Y Wang, YH Pan   +88 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Characteristics of an Iron-Reducing, Moderately Acidophilic Actinobacterium Isolated from Pyritic Mine Waste, and Its Potential Role in Mitigating Mineral Dissolution in Mineral Tailings Deposits

Microorganisms, 2020
Reactive pyritic mine tailings can be populated by chemolithotrophic prokaryotes that enhance the solubilities of many metals, though iron-reducing heterotrophic microorganisms can inhibit the environmental risk posed by tailings by promoting processes ...
Ivan Nancucheo, D. Barrie Johnson
doaj   +1 more source

A Single Bacterium Capable of Oxidation and Reduction of Iron at Circumneutral pH

Microbiology Spectrum, 2021
Fe(II)-oxidizing microorganisms and Fe(III)-reducing microorganisms, which drive the biogeochemical Fe cycle on the Earth’s surface, are phylogenetically and ecologically diverse.
Shingo Kato, Moriya Ohkuma
doaj   +1 more source

The effect of oxidation state on the viscosity of melts in the system Na2O-FeO-Fe2O3-SiO2 [PDF]

, 1987
The viscosities of two melts in the system Na2O-FeO-Fe2O3-SiO2 have been measured as a function of oxidation state. The experiments were conducted by concentric-cylinder viscometry, on melts equilibrated with gas mixtures in a vertical tube, gas-mixing ...
Dingwell, Donald B., Virgo, David
core   +1 more source

The multiple facets of root iron reduction [PDF]

Journal of Experimental Botany, 2017
The biological significance of iron (Fe) is based on its propensity to oscillate between the ferric and ferrous forms, a transition that also affects its phyto-availability in soils. With the exception of grasses, Fe3+ is unavailable to plants. Most angiosperms employ a reduction-based Fe uptake mechanism, which relies on enzymatic reduction of ferric ...
Louis, Grillet, Wolfgang, Schmidt
openaire   +2 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source