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See detailRelatório Projeto Presença Karajá - cultura material, tramas e trânsitos coloniais – Etapa 1 (2017-2020)
Duarte Cândido, Manuelina Maria ULiege; Lima, Nei Clara de

Report (2020)

Ce rapport fait référence à un projet commencé en 2017 et continué à partir de l'Université de Liège, à propos des poupées du peuple Iny Karajá dans les collections des musées dans tout le monde. Les ... [more ▼]

Ce rapport fait référence à un projet commencé en 2017 et continué à partir de l'Université de Liège, à propos des poupées du peuple Iny Karajá dans les collections des musées dans tout le monde. Les résultats sont aussi publiés dans le format des articles et des communications dans des événements scientifiques. [less ▲]

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See detailMultispectral Remote Sensing as a Tool to Support Organic Crop Certification: Assessment of the Discrimination Level between Organic and Conventional Maize
Denis, Antoine ULiege; Desclee, Baudouin; Migdall, Silke et al

in Remote Sensing (2020), 13 (1)(Janvier 2021),

The annual certification of organic agriculture products includes an in situ inspection of the fields declared organic. This inspection is more difficult, time-consuming, and costly for large farms or in ... [more ▼]

The annual certification of organic agriculture products includes an in situ inspection of the fields declared organic. This inspection is more difficult, time-consuming, and costly for large farms or in production regions located in remote areas. The global objective of this research is to assess how spatial remote sensing may support the organic crop certification process by developing a method that would enable certification bodies to target for priority in situ control crop fields declared as organic but that would show on satellite imagery an appearance closer to conventional fields. For this purpose, the ability of multispectral satellite images to discriminate between organic and conventional maize fields was assessed through the use of a set of four satellite images of different spatial and spectral resolutions acquired at different crop growth stages over a large number of maize fields (32) that are part of an operational farm in Germany. In support of this main objective, a set of in situ measurements (leaf hyperspectral reflectance, chlorophyll, and nitrogen content and dry matter percentage, crop canopy cover, height, wet biomass and dry matter percentage, soil chemical composition) was conducted to characterize the nature of the biochemical and biophysical differences between organic and conventional maize fields. The results of this research showed that highly significant biochemical and biophysical differences between a large number of organic and conventional maize fields may exist at identified crop growth stages and that these differences may be sufficiently pronounced to enable the complete discrimination between crop management modes using satellite images issued from quite common multispectral satellite sensors through the use of spectral or spatial heterogeneity indices. These results are very encouraging and suggest, for the first time, that satellite images could effectively support the organic maize certification process. [less ▲]

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See detailDepth-Sensing Hardness Measurements to Probe Hardening Behaviour and Dynamic Strain Ageing Effects of Iron during Tensile Pre-Deformation
Veleva, Lyubomira; Hähner, Peter; Dubinko, Andrii et al

in Nanomaterials (2020)

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See detailÉtude de valorisation du phosphogypse par désulfuration et par ajout à la stabilisation des sols gonflants
Oumnih, Safae ULiege

Doctoral thesis (2020)

The production of phosphoric acid from phosphate rock generates a large amount of waste in the form of phosphogypsum "PG". The storage strategy and management of this amount of phosphogypsum is a serious ... [more ▼]

The production of phosphoric acid from phosphate rock generates a large amount of waste in the form of phosphogypsum "PG". The storage strategy and management of this amount of phosphogypsum is a serious problem. The reuse or recycling of this waste remains limited despite the efforts made in this regard, because of the environmental risks that certain toxic elements (i.e. As, Ba, Cd, Cr, and Pb) could generate. The recovery of phosphogypsum has been studied using two approaches, namely desulphurization, which produces sulfur dioxide SO2, used in the synthesis of sulfuric acid, and the stabilization of bentonite intended for road construction. Desulfurization has made it possible to develop an alternative technique for upgrading PG and producing sulfur dioxide “SO2”, following attack by a strong acid in the presence of a metal catalyst “iron”. The results obtained showed that the leaching of PG with acid alone does not make it possible to reduce the sulphates of ions dissolved in SO2. However, if the leaching is carried out in the presence of iron, the release of SO2 gas is observed. The calculated values of ΔGr and ΔHr made it possible to prove the possibility of the reactions involved and to discuss the experimental results obtained. The stabilization of bentonite by adding phosphogypsum and lime as aggregates for road construction has been investigated, as well as the effect of these aggregates on cementitious properties has been discussed. Properties examined include chemistry (XRF), mineralogy (XRD, IR), calorimetry (ATD / TG), mechanical strength, and microstructure (SEM) of the mortar based on different mixtures of bentonite, phosphogypsum and lime. The results showed that the addition of lime and PG involves the formation of new nanocrystalline phases (CSH, stratlingite) and the disappearance of certain minerals such as portlandite. The CSH gel appeared in the mixture with 8% lime, while stratlingite was neoformed in the mixture with 8% L + 8% PG. These nanocrystalline phases are responsible for improving the mechanical strength due to the pozzolanic reaction. [less ▲]

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See detailÉtude de valorisation du phosphogypse par désulfuration et par ajout à la stabilisation des sols gonflants
Oumnih, Safae ULiege

Doctoral thesis (2020)

The production of phosphoric acid from phosphate rock generates a large amount of waste in the form of phosphogypsum "PG". The storage strategy and management of this amount of phosphogypsum is a serious ... [more ▼]

The production of phosphoric acid from phosphate rock generates a large amount of waste in the form of phosphogypsum "PG". The storage strategy and management of this amount of phosphogypsum is a serious problem. The reuse or recycling of this waste remains limited despite the efforts made in this regard, because of the environmental risks that certain toxic elements (i.e. As, Ba, Cd, Cr, and Pb) could generate. The recovery of phosphogypsum has been studied using two approaches, namely desulphurization, which produces sulfur dioxide SO2, used in the synthesis of sulfuric acid, and the stabilization of bentonite intended for road construction. Desulfurization has made it possible to develop an alternative technique for upgrading PG and producing sulfur dioxide “SO2”, following attack by a strong acid in the presence of a metal catalyst “iron”. The results obtained showed that the leaching of PG with acid alone does not make it possible to reduce the sulphates of ions dissolved in SO2. However, if the leaching is carried out in the presence of iron, the release of SO2 gas is observed. The calculated values of ΔGr and ΔHr made it possible to prove the possibility of the reactions involved and to discuss the experimental results obtained. The stabilization of bentonite by adding phosphogypsum and lime as aggregates for road construction has been investigated, as well as the effect of these aggregates on cementitious properties has been discussed. Properties examined include chemistry (XRF), mineralogy (XRD, IR), calorimetry (ATD / TG), mechanical strength, and microstructure (SEM) of the mortar based on different mixtures of bentonite, phosphogypsum and lime. The results showed that the addition of lime and PG involves the formation of new nanocrystalline phases (CSH, stratlingite) and the disappearance of certain minerals such as portlandite. The CSH gel appeared in the mixture with 8% lime, while stratlingite was neoformed in the mixture with 8% L + 8% PG. These nanocrystalline phases are responsible for improving the mechanical strength due to the pozzolanic reaction. [less ▲]

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See detailAcoustic homogeneity in the piranha Serrasalmus maculatus
Raick, Xavier ULiege; Rountree, Rodney; Kurchevski, Gregório et al

in Journal of Fish Biology (2020)

Different studies suggest some social calls could be used in fish identification if their specificity is unambiguously assessed. Sounds of different populations of piranhas Serrasalmus maculatus Kner ... [more ▼]

Different studies suggest some social calls could be used in fish identification if their specificity is unambiguously assessed. Sounds of different populations of piranhas Serrasalmus maculatus Kner, 1858 were recorded to determine their homogeneity between rivers inside a single basin (Araguari and Grande River, upper Paraná River basin) and between separated basins (Amazon and Paraná basins). All fish from the different populations produced sounds with similar acoustic features. Consequently, the populations were not discernible based on individual sound characteristics. This high homogeneity between sounds from different populations indicates their usefulness for conservation projects using passive acoustic monitoring in piranhas. Moreover, it supports the use of acoustic features as complementary key characteristics in taxonomic studies. [less ▲]

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See detailCompte rendu de Francofonia, n° 72 : « Rimbaud le voyant ? »
Lansmans, Alexandre ULiege

in Parade Sauvage (2020), (31), 323-328

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See detailLa rétrospective 2020 de David Lombard « Rétro-prospective » culturelle
Lombard, David ULiege

Article for general public (2020)

Tout le monde souhaite aller de l'avant, et Karoo vous propose un retour sur l'année culturelle 2020. 2020, son virus et son confinement, ses restrictions et insécurités. Mettant l'anxiété de côté et ... [more ▼]

Tout le monde souhaite aller de l'avant, et Karoo vous propose un retour sur l'année culturelle 2020. 2020, son virus et son confinement, ses restrictions et insécurités. Mettant l'anxiété de côté et explorant les contrées oubliées de l'optimisme, voici non pas un retour en arrière, mais un « retour vers l'avant », une « rétro-prospective » culturelle pour cette fin d'année 2020. [less ▲]

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See detailSe rétablir des excès de table selon Oribase, médecin grec de l’empereur Julien (milieu du IVe siècle)
Marganne, Marie-Hélène ULiege

E-print/Working paper (2020)

Recommandations thérapeutiques du médecin grec Oribase de Pergame pour se rétablir des excès de table et de boisson.

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See detailClimat : Paris dit +2°C maximum en 2100, la Belgique est déjà à +3°C en 2020
Ozer, Pierre ULiege

Article for general public (2020)

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See detailSpiegelei of omelet [Sunny-side up or omelet].
Van de Velde, Freek; Pijpops, Dirk ULiege

Article for general public (2020)

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See detailA Hybrid Fuzzy TOPSIS Method to Analyze the Coverage of a Hypothetical EU Ecolabel for Fishery and Aquaculture Products (FAPs)
Cantillo Acosta, Javier Arturo ULiege; Martín, Juan Carlos; Román, Concepción

in Applied Sciences (2020), 11(1), 112

This study presents a hybrid fuzzy technique for order preference by similarity of the ideal solution (TOPSIS) method (FTOPSIS) to analyze the coverage of a hypothetical EU ecolabel for fishery and ... [more ▼]

This study presents a hybrid fuzzy technique for order preference by similarity of the ideal solution (TOPSIS) method (FTOPSIS) to analyze the coverage of a hypothetical EU ecolabel for fishery and aquaculture products (FAPs) by integrating a synthetic indicator to determine the level of acceptance for the inclusion of different types of information apart from environmental issues, considering different stakeholders and other segments of analysis. Data were obtained from a public consultation of the EU on “ecolabels for FAPs”. The results indicate that ecolabels should not only include environmental issues but also other types of information, with social and ethical issues being the most relevant, followed by animal welfare issues, health and safety issues and food quality issues. The findings also show that consumers, producers and stakeholders who are more interventionist and support the fact that public bodies and governments should be involved in the control of eco-labeling are more accepting of including additional information apart from environmental issues. Synthetic indicators (SIs) have also been found to be mostly inelastic, except for the owners of ecolabels on social and ethical issues. The implications of the future implementation of the EU ecolabel for FAPs are discussed based on the findings. [less ▲]

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See detailNatural history of Type 2 and 3 spinal muscular atrophy: 2-year NatHis-SMA study.
Annoussamy, Mélanie; Seferian, Andreea M.; DARON, Aurore ULiege et al

in Annals of Clinical and Translational Neurology (2020)

OBJECTIVE: To characterize the natural history of spinal muscular atrophy (SMA) over 24 months using innovative measures such as wearable devices, and to provide evidence for the sensitivity of these ... [more ▼]

OBJECTIVE: To characterize the natural history of spinal muscular atrophy (SMA) over 24 months using innovative measures such as wearable devices, and to provide evidence for the sensitivity of these measures to determine their suitability as endpoints in clinical trials. METHODS: Patients with Type 2 and 3 SMA (N = 81) with varied functional abilities (sitters, nonsitters, nonambulant, and ambulant) who were not receiving disease-modifying treatment were assessed over 24 months: motor function (Motor Function Measure [MFM]), upper limb strength (MyoGrip, MyoPinch), upper limb activity (ActiMyo(®) ), quantitative magnetic resonance imaging (fat fraction [FF(T2) ] mapping and contractile cross-sectional area [C-CSA]), pulmonary function (forced vital capacity [FVC], peak cough flow, maximum expiratory pressure, maximum inspiratory pressure, and sniff nasal inspiratory pressure), and survival of motor neuron (SMN) protein levels. RESULTS: MFM32 scores declined significantly over 24 months, but not 12 months. Changes in upper limb activity could be detected over 6 months and continued to decrease significantly over 12 months, but not 24 months. Upper limb strength decreased significantly over 12 and 24 months. FVC declined significantly over 12 months, but not 24 months. FF(T2) increased over 12 and 24 months, although not with statistical significance. A significant increase in C-CSA was observed at 12 but not 24 months. Blood SMN protein levels were stable over 12 and 24 months. INTERPRETATION: These data demonstrate that the MFM32, MyoGrip, MyoPinch, and ActiMyo(®) enable the detection of a significant decline in patients with Type 2 and 3 SMA over 12 or 24 months. [less ▲]

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See detailSéance d’apprentissage du raisonnement clinique (ARC) à distance
Massart, Valérie; Buret, Laetitia ULiege; Giet, Didier ULiege et al

in Pédagogie Médicale (2020), 21(4), 223-226

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See detailModelling the Effect of FRP Sheets on the Complete Behaviour of Shear-Critical Coupling Beams
Mihaylov, Boyan ULiege; Liu, Jian; Garcia, Claudia

in Concrete Structures for Resilient Society, Design and Structures (2020, December 23)

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See detailL’extinction de l’action publique menée à charge du titulaire du privilège de juridiction et ses conséquences pour les auteurs d’infractions connexes
Michiels, Olivier ULiege

in Revue de la Faculté de Droit de l'Université de Liège (2020), 2020/3

Lorsqu’une instruction est menée par un conseiller juge d’instruction à charge d’un titulaire du privilège de juridiction et à charge d’autres personnes pour des infractions connexes aux infractions dont ... [more ▼]

Lorsqu’une instruction est menée par un conseiller juge d’instruction à charge d’un titulaire du privilège de juridiction et à charge d’autres personnes pour des infractions connexes aux infractions dont le magistrat est soupçonné, l’extinction de l’action publique à la suite d’une transaction ou d’un décision de classement sans suite du procureur général qui a pour effet de faire disparaître la connexité entre les faits reprochés à ce magistrat et d’autres personnes ne permet de priver ces dernières de l’intervention d’une juridiction d’instruction afin de régler la procédure au terme de l’instruction. [less ▲]

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See detailKlima-Wende-Zeit
Pfennig, Andreas ULiege

Scientific conference (2020, December 22)

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See detailStaphylococcus aureus adheres avidly to decellularised cardiac homograft tissue in vitro in the fibrinogen-dependent manner
Ditkowski, Bartosz ULiege; Leeten, Kirsten ULiege; Jashari, Ramadan et al

in Cardiology in the Young (2020), 30(12), 1783-1787

Objective: Infective endocarditis remains a severe complication associated with a high morbidity and mortality in patients after heart valve replacement. Exploration of the pathogenesis is of high demand ... [more ▼]

Objective: Infective endocarditis remains a severe complication associated with a high morbidity and mortality in patients after heart valve replacement. Exploration of the pathogenesis is of high demand and we, therefore, present a competent model that allows studying bacterial adherence and the role of plasma fibrinogen in this process using a new in-house designed low-volume flow chamber. Three cardiac graft tissues used for pulmonary valve replacement have been tested under shear conditions to investigate the impact of surface composition on the adhesion events. Methods: Tissue pieces of cryopreserved homograft (non-decellularised), decellularised homograft and bovine pericardium patch were investigated for fibrinogen binding. Adherence of Staphylococcus aureus to these graft tissues was studied quantitatively under flow conditions in our newly fabricated chamber based on a parallel plates' modality. The method of counting colony-forming units was reliable and reproducible to assess the propensity of different graft materials for bacterial attachment under shear. Results: Bacterial perfusions over all plasma-precoated tissues identified cryopreserved homograft with the lowest affinity for S. aureus compared to decellularised homograft presenting a significantly higher bacterial adhesion (p < 0.05), which was linked to a more avid fibrinogen binding (p < 0.01). Bovine pericardial patch, as a reference tissue in this study, was confirmed to be the most susceptible tissue graft for the bacterial adhesion, which was in line with our previous work. Conclusion: The two studied homograft tissues showed different levels of bacterial attachment, which might be postulated by the involvement of fibrinogen in the adhesion mechanism(s) shown previously for bovine tissues. [less ▲]

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