The Bradyrhizobium japonicum exporter ExsFGH is involved in efflux of ferric xenosiderophores from the periplasm. [PDF]
PLoS ONEThe gram-negative bacterium Bradyrhizobium japonicum can take up structurally dissimilar ferric siderophores from the environment (xenosiderophores) to meet its nutritional iron requirements.
Alasteir Ong, Mark R O'Brian
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Activity measurement of 55Fe using the liquid scintillation TDCR method
He jishu, 2023 Background55Fe is a low-energy radionuclide that is difficult to measure and decays to a ground state of 55Mn through pure electron capture (EC), accompanied by the emission of Auger electrons and low-energy X-ray.
LIU Haoran +3 more
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The role of FoxA, FiuA, and FpvB in iron acquisition via hydroxamate-type siderophores in Pseudomonas aeruginosa [PDF]
Scientific ReportsSiderophores are specialized molecules produced by bacteria and fungi to scavenge iron, a crucial nutrient for growth and metabolism. Catecholate-type siderophores are mainly produced by bacteria, while hydroxamates are mostly from fungi.
Virginie Will +6 more
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High-throughput X-ray spectroscopy: characterization of the ARDESIA detector with high-end digital pulse processors [PDF]
Journal of Synchrotron RadiationAmong the many factors that determine data acquisition efficiency in synchrotron radiation experiments, detector throughput is a primary bottleneck. As modern synchrotron sources provide increasingly intense X-ray beams, the signal processing time of ...
Beatrice Pedretti +5 more
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Gaia: segmented germanium detector for high-energy X-ray fluorescence and spectroscopic imaging [PDF]
Journal of Synchrotron RadiationWe present Gaia, a monolithic array of 96 high-purity germanium pixel detectors integrated with a custom low-noise application-specific integrated circuit (ASIC) and a field-programmable gate array (FPGA)-based data acquisition system.
Abdul K. Rumaiz +15 more
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Regulation of brain iron uptake by apo- and holo-transferrin is dependent on sex and delivery protein [PDF]
Fluids and Barriers of the CNS, 2022 Background The brain requires iron for a number of processes, including energy production. Inadequate or excessive amounts of iron can be detrimental and lead to a number of neurological disorders. As such, regulation of brain iron uptake is required for
Stephanie L. Baringer +4 more
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The Escherichia coli MFS-type transporter genes yhjE, ydiM, and yfcJ are required to produce an active bo3 quinol oxidase. [PDF]
PLoS ONE, 2023 Heme-copper oxygen reductases are membrane-bound oligomeric complexes that are integral to prokaryotic and eukaryotic aerobic respiratory chains. Biogenesis of these enzymes is complex and requires coordinated assembly of the subunits and their cofactors.
Bahia Khalfaoui-Hassani +3 more
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Comparison of LaBr3:Ce and CeBr3 scintillators for 55Fe detection
Nuclear Engineering and TechnologyThe detection capability for 55Fe was compared using 1'' × 1″ LaBr3:Ce and CeBr3 scintillators. To enable low-energy X-ray measurements, the top of the scintillator housing was modified with a beryllium window, allowing the detection of a 5.9 keV peak ...
Jae Hyung Park +7 more
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A comparative study on the influence of the type of acid used for 55Fe and 63Ni determination in steel samples through Liquid Scintillation Counting [PDF]
EPJ Web of Conferences, 2023 In decommissioning of nuclear facilities the presence of activated steel requires the determination, along with other radionuclides, of 55Fe and 63Ni. These can be considered as hard-to-measure-radionuclides because of their low energy beta particles or ...
Cozzella Maria Letizia +3 more
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Combined Analysis of 55Fe and 63Ni in Liquid Effluents From Nuclear Power Plants
He huaxue yu fangshe huaxue, 2023 The measurement of 55Fe and 63Ni is of great significance for the monitoring of liquid effluents from nuclear power plant. In this paper, a combined analysis method of 55Fe and 63Ni in liquid effluent sample is established.
FANG Chun-ming, JIANG Dong, MA Yuan-chen
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