Results 11 to 20 of about 467,553 (75)
A Computational Model of Liver Iron Metabolism [PDF]
, 2013 Iron is essential for all known life due to its redox properties, however these same properties can also lead to its toxicity in overload through the production of reactive oxygen species. Robust systemic and cellular control are required to maintain safe levels of iron and the liver seems to be where this regulation is mainly located.
arxiv +1 more source
Thermodynamics and Charging of Interstellar Iron Nanoparticles [PDF]
, 2016 Interstellar iron in the form of metallic iron nanoparticles may constitute a component of the interstellar dust. We compute the stability of iron nanoparticles to sublimation in the interstellar radiation field, finding that iron clusters can persist down to a radius of $\simeq 4.5\,$\AA, and perhaps smaller.
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Magnetic Properties Controlled by Interstitial or Interlayer Cations in Iron Chalcogenides [PDF]
Scientific Reports 6, 19031 (2016), 2016 By applying density functional theory calculations to iron chalcogenides, we find that magnetic order in Fe$_{1+y}$Te and magnetic instability at $(\pi,\pi)$ in K$_y$Fe$_2$Se$_2$ are controlled by interstitial and interlayer cations, respectively. While in Fe$_{1+y}$Te, magnetic phase transitions occur among collinear, exotic bicollinear and plaquette ...
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Spatial Distribution of Metals in the ICM: Evolution of the Iron Excess in Relaxed Galaxy Clusters [PDF]
, 2018 We investigate the spatial distribution of iron in the intra-cluster medium in a selected sample of 41 relaxed clusters in the redshift range $0.05 < z < 1.03$ using {\sl Chandra} archival data. We compute the azimuthally-averaged, deprojected $Z_{\rm Fe}$ profile of each cluster out to $\sim 0.4r_{500}$, and identify a peak in the distribution of iron
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Genetic Regulation of Fluxes: Iron Homeostasis of Escherichia coli [PDF]
arXiv, 2006 Iron is an essential trace-element for most organisms. However, because high concentration of free intracellular iron is cytotoxic, cells have developed complex regulatory networks that keep free intracellular iron concentration at optimal range, allowing the incorporation of the metal into iron-using enzymes and minimizing damage to the cell. We built
arxiv
, 2016 The surface science of iron oxides is comprehensively reviewed. For the full abstract please see pdf.
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Past and Present Dynamics of the Iron Biogeochemical Cycle [PDF]
arXiv, 2023 This chapter investigates the complexities surrounding the iron biogeochemical cycle from the Archean to present, with a focus on assessing the balance between iron sources and sinks during long periods of Earth's history with relatively invariable redox conditions, when steady state can be safely assumed.
arxiv
Fluorescence from metallic silver and iron nanoparticles prepared by exploding wire technique [PDF]
arXiv, 2006 The observation of intense visible fluorescence from silver and iron nanoparticles in different solution phases and surface capping is reported here. Metallic silver and iron nanoparticles were obtained by exploding pure silver and iron wires in pure water.
arxiv
IrOnIc: How to Consider Hundreds of Millions of Iron-Group Lines in NLTE Model-Atmosphere Calculations [PDF]
arXiv, 2011 Iron-group elements have a very high number of atomic levels and an overwhelming number of spectral lines. No NLTE model-atmosphere code can cope with these in a classical way. A statistical approach was developed over the last decade to decrease the number of levels and lines to a manageable amount.
arxiv
Melting Temperature of Iron Under the Earth's Inner Core Condition from Deep Machine Learning [PDF]
Geoscience Frontiers 15, 101925 (2024)Constraining the melting temperature of iron under Earth's inner core conditions is crucial for understanding core dynamics and planetary evolution. Here, we develop a deep potential (DP) model for iron that explicitly incorporates electronic entropy contributions governing thermodynamics under Earth's core conditions.
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