Red scale defect is known to be mainly caused by net-like Fe2SiO4–FeO. In the present study, the morphology of Fe2SiO4–FeO in a Si-containing steel was investigated by simultaneous thermal analysis, high-temperature laser scanning confocal microscopy, scanning electron microscopy, and energy dispersive spectroscopy. Only liquid Fe2SiO4–FeO can form a net-like morphology. Liquid Fe2SiO4–FeO is c...

Fructus forsythia essential oil (FEO) with excellent antibacterial activity was rarely reported. The objective of the present study was to investigate the antibacterial activity and the antibacterial mechanism of FEO against two food-borne pathogenic bacteria, Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) in vitro. When treated FEO, the zones of inhibition (ZOI) of E. coli (2...

The Yfe/Sit and Feo transport systems are important for the growth of a variety of bacteria. In Yersinia pestis, single mutations in either yfe or feo result in reduced growth under static (limited aeration), iron-chelated conditions, while a yfe feo double mutant has a more severe growth defect. These growth defects were not observed when bacteria were grown under aerobic conditions or in stra...

UNLABELLED Feo is the major ferrous iron transport system in prokaryotes. Despite having been discovered over 25 years ago and found to be widely distributed among bacteria, Feo is poorly understood, as its structure and mechanism of iron transport have not been determined. The feo operon in Vibrio cholerae is made up of three genes, encoding the FeoA, FeoB, and FeoC proteins, which are all req...

The coordination of the electronic ground states of Fe+ (6D) and FeO+ (6x+) has been investigated in the gas phase with the inorganic molecules H2, HD, D2, H20, CO, NO, N2, 02, C02, N02, and N20. Reaction rate coefficients and product distributions were measured with the Selected-Ion Flow Tube (SIFT) technique operating at 294 f 3 K and a helium buffer-gas pressure of 0.35 f 0.01 Torr. Except w...

Photoionization efficiency curves were measured for gas-phase FeO and CuO using tunable vacuum-ultraviolet radiation at the Advanced Light Source. The molecules are prepared using laser ablation of a metal-oxide powder in a novel high-repetition-rate source and are thermally moderated in a supersonic expansion. These measurements provide the first directly measured ionization energy for CuO, IE...

A first-principles formalism is employed to investigate the interaction of iron oxide (FeO) with a boron nitride (BN) nanotube. The stable structure of the FeO-nanotube has Fe atoms binding N atoms, with bond length of roughly ~2.1 Å, and binding between O and B atoms, with bond length of 1.55 Å. In case of small FeO concentrations, the total magnetic moment is (4 μ(Bohr)) times the number of F...

Electrical conductivity of FeO was measured up to 141 GPa and 2480 K in a laser-heated diamond-anvil cell. The results show that rock-salt (B1) type structured FeO metallizes at around 70 GPa and 1900 K without any structural phase transition. We computed fully self-consistently the electronic structure and the electrical conductivity of B1 FeO as a function of pressure and temperature, and fou...

Introduction: It has been proposed that chondrules behaved as chemically closed system with respect to Na [1-5]. This implies that Na did not evaporate from the chondrule melt after onset of olivine crystallization. High temperatures, low pressure and low fO 2 during chondrule formation, however, should lead to rapid loss (minutes) of Na [e.g., 6]. This is not observed. Understanding the relati...

An embedded catalyst for the oxidative dehydration of glycerol, featuring iron oxide (FeO(x)) domains on the surface of an iron orthovanadate (FeVO₄) phase, is developed. Catalytic reactions are conducted in a fixed-bed reactor at 300 °C with a feed composition N₂/O₂/H₂O/glycerol=66.6:1.7:30.3:1.5. Catalytic results show that the catalyst exhibits a better performance than an FeO(x) catalyst pr...