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See detailIron ores of Southern Belgium: much more than hematite
Denayer, Julien ULiege

in Anthropologica et Praehistorica : Bulletin de la Société Royale Belge d'Anthropologie et de Préhistoire (2016), 126

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See detailIron Oxidation and Deposition in the Biofilm Covering Montacuta ferruginosa (Mollusca, Bivalvia).
Gillan, D.; Warnau, M.; De Vrind-De Jong, E. W. et al

in Geomicrobiology Journal (2000), 17(2), 141-150

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See detailIron oxide deposits associated with the ectosymbiotic bacteria in the hydrothermal vent shrimp Rimicaris exoculata
Corbari, Laure; Cambon-Bonavita, Marie-Anne; Long, Gary et al

in Biogeosciences (2008), 5

Detailed reference viewed: 15 (2 ULiège)
See detailIron oxide-rich rocks in Palaeolithic context: Middle Stone Age of Africa and Late Mousterian in France
Salomon, Hélène ULiege; Coquinot, Yvan

Scientific conference (2012)

Detailed reference viewed: 12 (1 ULiège)
See detailIron production in the region of Liège in the Middle Age: Contribution of slag inclusions analyses
Mertens, Anne ULiege; Mathis, François ULiege; DILLMANN, Philiippe et al

Conference (2009, February)

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See detailIron status in runners of various running specialities
Mouton, G.; Sluse, Francis ULiege; Bertrand, A. et al

in Archives Internationales de Physiologie et de Biochimie (1990), 98

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See detailIron study during a time series in the western Weddell pack ice
Lannuzel, Delphine; Schoemann, Veronique; de Jong, Jeroen et al

in Marine Chemistry (2008), 108(1-2), 85-95

Samples of sea ice, snow, brine and underlying seawater were collected in the western Weddell pack ice at the ISPOL drifting station (Ice Station POLarstern, 68 degrees S/55 degrees W) in spring-summer ... [more ▼]

Samples of sea ice, snow, brine and underlying seawater were collected in the western Weddell pack ice at the ISPOL drifting station (Ice Station POLarstern, 68 degrees S/55 degrees W) in spring-summer period (November 2004-January 2005). Total-dissolvable, dissolved and particulate Fe concentrations in the sea ice environment were determined every 5 days during the time series, together with relevant physical, chemical and biological parameters. From 29 November to 30 December, a decrease in all forms of Fe measured was observed, likely to be the result of enhanced ice permeability as summer proceeds. At the beginning of the time series, melting of the upper ice layer took place together with brine drainage process. This would enable the seeding of Fe from the ice matrix towards the upper water column below. 70% of this Fe was supplied during the first 10 days of the survey, while the ice cover is still present. Flux estimates from the sampled area furthermore highlight the relevant role of the pack ice in the biogeochemical cycle of Fe in the western Weddell Sea. (C) 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailIron sucrose - characteristics, efficacy and regulatory aspects of an established treatment of iron deficiency and iron-deficiency anemia in a broad range of therapeutic areas
Beguin, Yves ULiege; JASPERS, Aurélie ULiege

in Expert Opinion on Pharmacotherapy (2014), 15

Introduction: Iron is a key element in the transport and utilization of oxygen and a variety of metabolic pathways. Iron deficiency is a major cause of anemia and can be associated with fatigue, impaired ... [more ▼]

Introduction: Iron is a key element in the transport and utilization of oxygen and a variety of metabolic pathways. Iron deficiency is a major cause of anemia and can be associated with fatigue, impaired physical function and reduced quality of life. Administration of oral or intravenous (i.v.) iron is the recommended treatment for iron-deficiency anemia (IDA) in different therapeutic areas. Areas covered: This article provides an overview of studies that evaluated i.v. iron sucrose for anemia and iron status management, either alone or in combination with erythropoiesis-stimulating agents, across various diseases and conditions. Expert opinion: Iron sucrose is an established, effective and well-tolerated treatment of IDA in patients with acute or chronic conditions such as chronic kidney disease, inflammatory bowel disease, pregnancy (second and third trimester), postpartum period, heavy menstrual bleeding and cancer who need rapid iron supply and in whom oral iron preparations are ineffective or not tolerated. Available data on patient blood management warrant further studies on preoperative iron treatment. First experience with iron sucrose follow-on products raises questions about their therapeutic equivalence without comparative clinical data in newly diagnosed patients or patients on existing chronic treatment. [less ▲]

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See detailIron(III) species dispersed in porous silica through sol-gel chemistry
Heinrichs, Benoît ULiege; Rebbouh, Leila; Geus, John W et al

in Journal of Non-Crystalline Solids (2008), 354(2-9), 665-672

Fe/SiO2 catalysts have been prepared by two different sol-gel methods, cogelation and dissolution. The cogelation and dissolution preparative methods lead to xerogels with fundamentally different pore ... [more ▼]

Fe/SiO2 catalysts have been prepared by two different sol-gel methods, cogelation and dissolution. The cogelation and dissolution preparative methods lead to xerogels with fundamentally different pore width distributions. The nature of the iron species obtained has been examined in detail by UN-visible and Mossbauer spectroscopy, and magnetic, transmission electron microscopy, and X-ray diffraction studies. There is no evidence for the presence of any ordered iron(III) oxides in the samples but all three contain two types of iron species, specifically paramagnetic high-spin iron(III) ions isolated in silica and iron(III) containing nanoparticles with a broad width distribution centered on 1.5 nm, nanoparticles that contain antiferromagnetically coupled clusters of a few ligated bridged iron(III) ions. (C) 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailIron(III) species dispersed in porous silica through sol-gel chemistry: nature, size, and catalytic activity
Heinrichs, Benoît ULiege; Rebbouh, Leila; Geus, John W. et al

Conference (2006)

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See detailIron, zinc and manganese interaction within the frd3 Arabidopsis mutant
Scheepers, Maxime ULiege; Spielmann, Julien ULiege; Goormaghtigh, Erik et al

Poster (2017, January 12)

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See detailIron-dependent nitrogen cycling in a ferruginous lake and the nutrient status of Proterozoic oceans
Michiels, Celine C.; Darchambeau, François ULiege; Roland, Fleur ULiege et al

in Nature Geoscience (2017), advance online publication

Nitrogen limitation during the Proterozoic has been inferred from the great expanse of ocean anoxia under low-O2 atmospheres, which could have promoted NO3- reduction to N2 and fixed N loss from the ocean ... [more ▼]

Nitrogen limitation during the Proterozoic has been inferred from the great expanse of ocean anoxia under low-O2 atmospheres, which could have promoted NO3- reduction to N2 and fixed N loss from the ocean. The deep oceans were Fe rich (ferruginous) during much of this time, yet the dynamics of N cycling under such conditions remain entirely conceptual, as analogue environments are rare today. Here we use incubation experiments to show that a modern ferruginous basin, Kabuno Bay in East Africa, supports high rates of NO3- reduction. Although 60 of this NO3- is reduced to N2 through canonical denitrification, a large fraction (40\%) is reduced to NH4+, leading to N retention rather than loss. We also find that NO3- reduction is Fe dependent, demonstrating that such reactions occur in natural ferruginous water columns. Numerical modelling of ferruginous upwelling systems, informed by our results from Kabuno Bay, demonstrates that NO3- reduction to NH4+ could have enhanced biological production, fuelling sulfate reduction and the development of mid-water euxinia overlying ferruginous deep oceans. This NO3- reduction to NH4+ could also have partly offset a negative feedback on biological production that accompanies oxygenation of the surface ocean. Our results indicate that N loss in ferruginous upwelling systems may not have kept pace with global N fixation at marine phosphorous concentrations (0.04-0.13[thinsp][mu]M) indicated by the rock record. We therefore suggest that global marine biological production under ferruginous ocean conditions in the Proterozoic eon may thus have been P not N limited. [less ▲]

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See detailIron-manganese phosphates with the olivine- and alluaudite-type structures : crystal chemistry and applications
Hatert, Frédéric ULiege

in Krivovichev, Sergey (Ed.) Mineral as Advanced Materials II (2012)

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See detailIron-manganese phosphates with the olivine- and alluaudite-type structures: crystal chemistry and applications
Hatert, Frédéric ULiege

in Minerals as Advanced Materials II, Abstract Book (2010)

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See detailIron-manganese phosphates: from pegmatites to lithium-ion batteries
Hatert, Frédéric ULiege

Scientific conference (2015)

Detailed reference viewed: 9 (0 ULiège)
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See detailIron-Titanium oxide minerals in the Bjerkrem-Sogndal massif, south-western Norway
Duchesne, Jean-Clair ULiege

in Journal of Petrology (1972), 13(1), 57-81

Ilmenite and magnetite are investigated from the point of view of their distribution, micro-texture, and chemical composition (major and minor elements) in the Bjerkreim-Sokndal massif (Egersund area ... [more ▼]

Ilmenite and magnetite are investigated from the point of view of their distribution, micro-texture, and chemical composition (major and minor elements) in the Bjerkreim-Sokndal massif (Egersund area, South-Rogaland, SW. Norway). This massif is an igneous layered lopolith made up of cumulates of the anorthosite-mangerite suite. The lower part of the massif presents a rhytmic structure. The microtextures of ilmenite result from simple exsolution of ilmenite-hematite solid solution. Magnetite contains intergrowths of ilmenite formed by oxidation-exsolution of ulvöspinel-magnetite solid-solution. In the stratigraphic sequence, on a large scale, ilmenite appears first alone, and is then accompanied by magnetite; its hematite content decreases towards the top of the massif, while the titanium content of the magnetite increases. On the scale of the rhythms, similar trends but of a lesser amplitude are also observed. Evidence of deuteric readjustment of the orthomagmatic composition of the two oxides is provided (1) by the observation of microtextures at the contact betwen grains (zoning of primary ilmenite and rim of secondary ilmenite) (2) by the existence of differences in chemical composition between isolated grains and grains in contact, and (3) bythe determination of the equilibrium temperature by means of the Buddington and Lindsley geothermonmeter. Reconstruction of the T-fO2 orthomagmatic conditions is provided in two particular levels of the massif shows that the reducing character of the magma increases during differentiation. The sudden changes in the oxide assembalge at the base of the rythmic units reflect a sudden increase in the fO2 of the magma. These increases, as shown by variation in Cr, Ni and Co, are due to recurrences of the basic character of the magma. The variations of the minor elements Mn, V, Ga, and Zn are interpreted in terms of the influence of the deuteric readjustment. It follows that the ratios Mn/Fe2+ ; Ga/Fe3+, and Zn/Fe2+ increase and that the ratio V/Fe3+ decreases in the magma in the course of differentiation. The distribution of Mn between ilmenite and magnetite is discussed. Intermittent supplies of undifferentiated magma are proposed as the geological mechanism controlling the chemical recurrencess associated with the rhythmic structure. [less ▲]

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