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See detailDérivés et composés de 'Volkaaks' à 'Volsweren'
Vromans, Joseph ULg; De Clerck, W.

in Woordenboek der Nederlandsche Taal XXII/6 (1981)

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See detailLes dérives liées à l'approche par compétences
Schneider-Gilot, Marguerite ULg

Scientific conference (2012, October 18)

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See detailDérivés phosphorylés de la thiamine et bioélectrogenèse
Grandfils, Christian ULg; Bettendorff, Lucien ULg; Schoffeniels, E et al

Poster (1984, September)

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See detailDérivés phosphorylés de la thiamine et bioélectrogenèse
Grandfils, Christian ULg; Bettendorff, Lucien ULg; Schoffeniels, E et al

in Regards sur la biochimie (1985), 4

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See detailDeriving a global antioxidant score for commercial juices by multivariate graphical and scoring techniques: applications to blackcurrant juice
Tabart, Jessica; Kevers, Claire ULg; Dardenne, Nadia ULg et al

in Preedy (Ed.) Processing and Impact on Antioxidants in Beverages (2014)

Blackcurrants constitute an important source of potential health promoting phytochemicals (e.g. phenolic compounds, ascorbic acid) due to their antioxidant properties. Only small portions of berries are ... [more ▼]

Blackcurrants constitute an important source of potential health promoting phytochemicals (e.g. phenolic compounds, ascorbic acid) due to their antioxidant properties. Only small portions of berries are consumed fresh, most of their intake coming from processed foods, such as juices. Seven techniques were used to measure antioxidant capacity and antioxidant compounds of 10 juices. This yielded a large disparity of results. No single test, even the most popular ORAC assay, is able to compare the antioxidant capacity of similar food matrix such as blackcurrant juices. By combining tests from a large battery of « antioxidant » assays, it is possible to improve the discrimination of a food matrix by establishing a Global Antioxidant Score (GAS) which correlates well with graphical representations like Chernoff faces or stars. The latter approaches may help food industry managers and authorities to compare their « antioxidant » products with those existing on the market. [less ▲]

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See detailDeriving cultural heritage values: the use of social media
Ginzarly, Manal ULg; Teller, Jacques ULg

in Old and New Media for the Image of the Landscape (2016, October 28)

Nel 2011 l’UNESCO ha adottato la Raccomandazione sul Paesaggio Storico Urbano che mira al riconoscimento e all'identificazione della stratificazione e dell'interconnessione dei valori - naturali e ... [more ▼]

Nel 2011 l’UNESCO ha adottato la Raccomandazione sul Paesaggio Storico Urbano che mira al riconoscimento e all'identificazione della stratificazione e dell'interconnessione dei valori - naturali e culturali, materiali e immateriali, internazionali e locali – riscontrabili in qualsiasi città storica, concepita come un “patrimonio vivente” delle comunità. In tale visione il patrimonio culturale urbano è un elemento riconosciuto non solo dagli esperti, ma dalle intere società che ne valutano gli elementi identitari mirando a conservarli per le generazioni future. La Raccomandazione, in particolare, sostiene che per l'interpretazione e la conservazione del patrimonio culturale si può beneficiare di metodi di valutazione tradizionali e di metodi innovativi basati su dati geo-localizzati e sui dati digitali dei social media, come tweets geo-localizzati, impronte digitali e foto su Flickr. Il presente contributo illustra una metodologia basata sull’analisi delle immagini su Flickr. Dai risultati ottenuti si è evinto che proprio l’indagine dei social media può contribuire ad una comprensione significativa dei valori culturali del contesto urbano, fornendo così la possibilità di una migliore integrazione dei valori socio-culturali riconosciuti dalla collettività nei processi di conservazione e di pianificazione urbana. [less ▲]

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See detailDeriving lactation yields from test-day yields adjusted for lactation stage, age, pregnancy, and herd test date
Wiggans, G. R.; VanRaden, P. M.; Bormann, J. et al

in Journal of Dairy Science (2002), 85

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See detailDeriving ocean climatologies with multivariate coupling
Barth, Alexander ULg; Alvera Azcarate, Aida ULg; Beckers, Jean-Marie ULg

Conference (2016)

In situ measurements of ocean properties are generally sparsely distributed and thus undersample the ocean variability. Deriving ocean climatologies is a challenging task especially for biological and ... [more ▼]

In situ measurements of ocean properties are generally sparsely distributed and thus undersample the ocean variability. Deriving ocean climatologies is a challenging task especially for biological and chemical parameters where the number of data is, by an order of magnitude, smaller than for physical parameters. However, physical and biogeochemical parameters are related through the ocean dynamics. In particular fronts visible in physical parameters are often related to gradients in biogeochemical parameters. Ocean climatologies are generally derived for different variables independently. For biogeochemical parameters, only the very large-scale variability can be derived for poorly sampled areas. Here we present a method to derive multivariate analysis taking the relationship between physical and biogeochemical variables into account. The benefit of this procedure is showed by using model data for salinity, nitrate and phosphate of the Mediterranean Sea. The model fields are sampled at the locations of true observations (extracted from the World Ocean Database 2013) and the analysed fields are compared to the original model fields. The multivariate analysis result in a reduction of the RMS error and to a better representation of the gradients [less ▲]

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See detailDeriving Risk Appetite and translating it into a meaningful set of limits
Hübner, Georges ULg; Nord, Andrew; Smith, Brian

Conference (2009, January)

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See detailDerjaguin-Broekhoff-de Boer analysis of adsorption in very disordered mesopores using probabilistic models
Gommes, Cédric ULg

Poster (2015, May)

Our current ability to produce mesoporous materials with ordered morphology has raised fascinating questions about the impact of geometrical disorder on adsorption and desorption states [1]. Many recent ... [more ▼]

Our current ability to produce mesoporous materials with ordered morphology has raised fascinating questions about the impact of geometrical disorder on adsorption and desorption states [1]. Many recent works have investigated the role of mild elements of disorder, such as local constriction or corrugation superimposed to otherwise geometrically ideal cylindrical pores [2,3]. These works have notably shown that elements of disorder may act as nucleation sites and destabilize vapor-like metastable states. The relevance of these perturbation-like results to fundamentally disordered materials, such as gels, is unclear. In particular, do vapor-like metastable states exist at all in this type of very disordered material? In the present communication, we address this question using probabilistic models to investigate the role of disorder. We generalize the classical Gaussian field models of porous materials [4] and use them to analyze adsorption and desorption in the Derjaguin-Broekhof-de Boer approximation. Our approach differs from earlier contributions in that both the adsorbent and the adsorbate are described in terms of probabilities [5]. This enables us to analyze the adsorbate configuration in very disordered solids using a low-dimensional yet realistic configuration space. We notably show that vapor-like metastable states are unlikely in gel-like disordered materials. [1] D.Wallacher, N. Künzner, D. Kovalev, N. Knorr, K. Knorr, Capillary condensation in linear mesopores of different shape, Phys. Rev. Lett. 92 (2004) 195704; [2] B. Coasne, A. Galarneau, F. Di Renzo, R.M.J. Pellenq, Effect of morphological defects on gas adsorption in nanoporous silicas, J. Phys. Chem. C 111 (2007) 15759; [3] C.J. Gommes, Adsorption, capillary bridge formation, and cavitation in SBA-15 corrugated mesopores: A Derjaguin-Broekhoff-de Boer analysis, Langmuir 28 (2012) 5101-5115; [4] R.J. Pellenq, P. levitz, Capillary condensation in a disordered mesoporous medium: A grand canonical Monte Carlo study, Molecular Physics 100 (2002) 2059;[5] C.J. Gommes, A.P. Roberts, in preparation. [less ▲]

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See detailDermacentor reticulatus as vector of Anaplasma phagocytophilum ?
Wirtgen, M; Heyman, P; Cochez, C et al

Conference (2011, October 07)

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See detailDermal Dendritic Cells in Anogenital Warty Lesions Unresponsive to an Immune-Response Modifier
Arrese, J.; Paquet, Philippe ULg; Claessens, N. et al

in Journal of Cutaneous Pathology (2001), 28(3), 131-4

BACKGROUND: Human papilloma viruses (HPV) are responsible for a variety of proliferative epithelial lesions including anogenital condylomas. These lesions may regress during treatment with an immune ... [more ▼]

BACKGROUND: Human papilloma viruses (HPV) are responsible for a variety of proliferative epithelial lesions including anogenital condylomas. These lesions may regress during treatment with an immune-response modifier such as imiquimod. The release of specific cytokines from the monocyte-macrophage lineage induces a cascade of events abating the HPV replication. METHOD: A total of 14 persistent warty anogenital lesions were excised 4 to 7 weeks after completing a 4-month imiquimod treatment. Another series of 25 untreated condylomas and 8 bowenoid papulosis served as controls. All examined lesions had been excised in otherwise healthy individuals with a normal immune status. Lesions were examined for the presence of Langerhans cells and subpopulations of the monocyte/macrophage/dendrocyte lineage using immunohistochemical detection of L1-protein, CD68, lysozyme and Factor-XIIIa. CD45R0-positive T lymphocytes were also identified. HPV capsid antigens and genotypes were searched for using immunohistochemistry and in situ hybridization, respectively. RESULTS: The persistent although treated anogenital lesions were identified as 10 viral condylomas, 3 bowenoid papulosis and 1 basal cell carcinoma. The inflammatory cell densities and distributions were similar in the untreated and imiquimod-resistant condylomas with the exception of Factor XIIIa-positive dendrocytes. These dermal dendritic cells were slim and rare in all imiquimod-resistant lesions. In contrast, about two-thirds of the untreated condylomas were enriched in these cells. CONCLUSION: As dermal dendritic cells play a role in the immune surveillance, their low densities in some lesions might be a key feature responsible for low cytokine local production and failure of imiquimod treatment. The combined apparent lack of Langerhans cell activation might suggest that both intraepidermal and intradermal compartments of antigen-presenting cells are affected in imiquimod-resistant lesions. [less ▲]

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See detailDermal dendrocyte ballooning.
Quatresooz, Pascale ULg; Pierard, Gérald ULg

in American Journal of Clinical Dermatology (2006), 7(6), 391-2

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See detailDermal Dendrocytes and Photochemotherapy
Pierard, Gérald ULg; Nikkels, Arjen ULg; Arrese Estrada, Jorge ULg et al

in Virchows Archiv. A : Pathological Anatomy and Histopathology (1991), 418(4), 311-314

We studied the fate of dermal dendrocytes in patients treated with psoralens and ultraviolet light by combining immunohistochemistry and computerized image analysis. Factor-XIIIa-positive dermal ... [more ▼]

We studied the fate of dermal dendrocytes in patients treated with psoralens and ultraviolet light by combining immunohistochemistry and computerized image analysis. Factor-XIIIa-positive dermal dendrocytes were found to be altered in these patients. When compared with controls, dermal dendrocytes were often increased in number and had an uneven size and tissue distribution. Their cytoplasm was occasionally fragmented. These changes were more pronounced when early photosclerosis was present. The alterations described probably reflect vascular changes, and may be responsible for immunomodulating actions and disorder of the connective tissue structure induced by ultraviolet light. [less ▲]

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See detailDermal ultrastructure in collagen VI myopathy.
Hermanns-Lê, Trinh ULg; PIERARD, Gérald ULg; Franchimont, Claudine ULg et al

in Ultrastructural Pathology (2013)

The COL VI mutations are responsible for a spectrum of myopathies. The authors report cutaneous ultrastructural alterations in a patient with COL6A2 myopathy. The changes include variations in size of ... [more ▼]

The COL VI mutations are responsible for a spectrum of myopathies. The authors report cutaneous ultrastructural alterations in a patient with COL6A2 myopathy. The changes include variations in size of collagen fibrils, flower-like sections of collagen fibrils, as well as thickening of vessel and nerve basement membranes. Electron microscopy of a skin biopsy contributes to the diagnosis of COL VI myopathies. [less ▲]

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See detailDermal ultrastructure in low Beighton score members of 17 families with hypermobile-type Ehlers-Danlos syndrome.
Hermanns-Lê, Trinh ULg; REGINSTER, Marie-Annick ULg; Franchimont, Claudine ULg et al

in Journal of Biomedicine & Biotechnology (2012), 2012

The distinction between the Ehlers-Danlos syndrome hypermobile type (EDSH) and the benign joint hypermobility syndrome (BJHS) is unclear. The aim of the present study was to compare skin ultrastructural ... [more ▼]

The distinction between the Ehlers-Danlos syndrome hypermobile type (EDSH) and the benign joint hypermobility syndrome (BJHS) is unclear. The aim of the present study was to compare skin ultrastructural abnormalities of EDSH and BJHS among different families. Skin of 23 EDSH, 27 BJHS, and 41 asymptomatic subjects from 17 families was examined using transmission electron microscopy. Similar ultrastructural abnormalities were found irrespective of the Beighton score. Flower-like collagen fibrils represented the key change and elastic fibers were altered as well. Beighton score is a clinical parameter rating joint mobility that appeared unrelated to quantitative and qualitative collagen ultrastructural alterations in the skin. Some EDSH family members fit with BJHS diagnosis. BJHS possibly represents a mild variant of EDSH. [less ▲]

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See detailDermatite actinique chronique severe traitee par ciclosporine: 2 cas
Paquet, Philippe ULg; Pierard, Gérald ULg

in Annales de Dermatologie et de Vénéréologie (2001), 128(1), 42-5

INTRODUCTION: The treatment of the severe forms of photodermatoses often requires potent systemic immunosuppressive drugs. We report two patients suffering from severe photodermatitis successfully treated ... [more ▼]

INTRODUCTION: The treatment of the severe forms of photodermatoses often requires potent systemic immunosuppressive drugs. We report two patients suffering from severe photodermatitis successfully treated with oral cyclosporine. CASES REPORT: A 58-year-old man developed severe pruritic eczematous reactions for several years on light-exposed and light-protected skin following each sun exposure. A 66-year-old man showed similar lesions restricted to the head and neck. The clinical presentation and evolution as well as histologic, immunohistologic, allergologic and photobiologic assessments suggested the diagnosis of actinic reticuloid and persistent light reactivity, respectively. The lesions of both patients did not respond to a high dose regimen of systemic corticosteroids (methylprednisolone 1 mg/kg/day) for several weeks. The severity of cutaneous lesions and pruritus required another potent immunosuppressive treatment. Oral cyclosporine at the maximum daily dose of 4 mg/kg was given for three months. A rapid improvement of the pruritus and skin lesions occurred in the two patients, without significant side-effect. The first patient experienced recurrent lesions after termination of cyclosporine treatment during summer time. The other patient did not develop new skin eruption for 3 years after stopping the initial treatment with cyclosporine. DISCUSSION: Low-dose oral cyclosporine is a quick-acting and well tolerated symptomatic treatment of severe photodermatoses resistant to other systemic immunosuppressive drugs. However, therapeutic results do not consistently exhibit long-standing remanent effect. [less ▲]

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