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See detailClay mineral signature of the NW Atlantic Boundary Undercurrent
Fagel, Nathalie ULg; Robert, Christian; Hillaire Marcel

in Marine Geology (1996), 130(1-2), 19-28

Surface sediments were sampled along 2 transects, across the Iceland and Irminger basins and in the Labrador Sea. Clay mineral assemblages (deduced from X-ray analyses of the carbonate-free <2 mu m ... [more ▼]

Surface sediments were sampled along 2 transects, across the Iceland and Irminger basins and in the Labrador Sea. Clay mineral assemblages (deduced from X-ray analyses of the carbonate-free <2 mu m fraction) are largely dominated by smectites (about 60%) in the Iceland and Irminger basins. In the Labrador Sea, smectites are present along the Greenland Slope, but absent or rare in sediments from the Labrador Slope. They may, however, represent up to 50% of the clay fraction at depths between 2800 and 3400 m along both margins of the Labrador Sea, i.e., along the axis of the Western Boundary Undercurrent (WBUC). A detrital supply from the adjacent continents is unlikely. The WBUC is thought to be responsible for erosion and transport of fine particles from the smectite-rich Irminger and Iceland Basins, then for their redeposition in the Labrador Sea. These results suggest that clay minerals can be used as paleocurrent indicators in the Northwest Atlantic. [less ▲]

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See detailCLAY SEDIMENTATION IN THE JAPAN SEA SINCE THE EARLY MIOCENE - INFLUENCE OF SOURCE-ROCK AND HYDROTHERMAL ACTIVITY
Fagel, Nathalie ULg; André, Luc; CHAMLEY, H. et al

in Sedimentary Geology (1992), 80(1-2), 27-40

X-ray diffraction analyses have been carried out on 128 samples of Miocene to Quaternary sediments from ODP Sites 794, 795 and 797. Some clay fractions of samples from Site 797 have also been studied for ... [more ▼]

X-ray diffraction analyses have been carried out on 128 samples of Miocene to Quaternary sediments from ODP Sites 794, 795 and 797. Some clay fractions of samples from Site 797 have also been studied for rare earth elements and by Nd isotopic analyses. These three sites display similar lithological and clay assemblages (with dominant chlorite, illite and smectite) showing that the sedimentation was homogeneous throughout the whole Japan Sea Basin. Three mineralogical zones are recognized. The first zone (Lower Miocene sandy clay of Sites 794 and 797) is mainly composed of chlorite resulting from hydrothermal transformation of arc-derived smectite, due to sill injections during the initial oceanic spreading stage. The second zone (Lower Miocene to Lower Pliocene siliceous claystone and diatomaceous silty clay) is dominated by arc-derived smectite; the abundance of this mineral decreases upwards while illite and chlorite increase. This trend reflects a change of detrital source, from an eastern arc-derived source (epsilon(Nd)t > -3.3; variable LREE enrichment) to a western continental crust source (epsilon(Nd)t < -9.4; shale-like REE patterns); climatic modifications in the current dynamics are proposed as a cause for this change. The third zone (Upper Pliocene to Recent silty clay with minor diatom oozes) is characterized at Site 797 by increasing amounts of illite and chlorite. This reflects a more and more important western supply which is assumed to be related to tectonic rejuvenations of the Asian margin or climatic modifications affecting the alteration conditions or the current dynamics. At Sites 794 and 795, the more or less sharp supply of chlorite seems to be driven by the incipient subduction zone on the eastern margin of the Japan Sea. [less ▲]

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See detailCLAY SUPPLIES IN THE CENTRAL INDIAN BASIN SINCE THE LATE MIOCENE - CLIMATIC OR TECTONIC CONTROL
Fagel, Nathalie ULg; DEBRABANT, P.; André, Luc

in Marine Geology (1994), 122(1-2), 151-172

Mineralogical (X-ray diffraction, differential thermal analysis), geochemical [microprobe, inductively coupled plasma (ICP)-atomic emission spectrometry, ICP-mass spectrometry] and Sr-Nd isotopic analyses ... [more ▼]

Mineralogical (X-ray diffraction, differential thermal analysis), geochemical [microprobe, inductively coupled plasma (ICP)-atomic emission spectrometry, ICP-mass spectrometry] and Sr-Nd isotopic analyses have been carried out on the clay size fraction of Late Miocene to Pleistocene sediments from the Central Indian Basin. The samples were taken from five giant cores recovered between 1-degree and 10-degrees-S on a transect along 80-degree-E. The clay assemblages are homogeneous and characterized by an alteration of illite- and smectite-rich levels. Most of the clays are detrital and were derived from a unique source: the weathering of the Indo-Gangetic Plain supplied most of the eroded material. Temporal clay mineralogical fluctuations in the depositional basin reflect environmental changes in the provenance. On the basis of spectral analyses of a mineralogical parameter (peak height ratios), the fluctuating smectite-illite clay sedimentation is controlled by periodic Late Miocene climatic changes. During the Late Pliocene, an irregular, probably tectonic, control appeared. [less ▲]

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See detailClay-mineral record in Lake Baikal sediments: The Holocene and Late Glacial transition
Fagel, Nathalie ULg; Boes, Xavier

in Palaeogeography, Palaeoclimatology, Palaeoecology (2008), 259(2-3), 230-243

We analyse the clay-mineralogical composition of two 1-m long cores from elevated plateaus in the southern and northern basins of Lake Baikal. Our aim is to test the limits of classically used clay ... [more ▼]

We analyse the clay-mineralogical composition of two 1-m long cores from elevated plateaus in the southern and northern basins of Lake Baikal. Our aim is to test the limits of classically used clay proxies for climate reconstructions. Mineralogical signature is determined by X-ray diffraction on oriented aggregates from Holocene and Late Glacial sediments. Mineralogical results are presented on a palaeomagnetic-derived time scale. Sampling at a centimeter resolution allows for a sub-millenial order reconstruction. The evolution of clay-derived climate proxies (smectite/illite peak intensity ratio, S/I) is compared between the two locations, with respect to other climate reconstructions for the Lake Baikal area and Siberia. During the Late Glacial punctual increases of S/I are related to changes of particle source rather than any climate change. At both sites the most intense chemical weathering conditions occured during the Subboreal, lagging the Eurasian middle Atlantic climate optimum. S/I follows a gradual but irregular increase through the Holocene, probably related to slow warming favourable to the development of the Siberian soils. The different sensitivity to hydrolysing conditions in northern and southern sites can be explained by a combination of local lithological and topographical parameters. (c) 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailCLC-5 and KIF3B interact to facilitate CLC-5 plasma membrane expression, endocytosis, and microtubular transport: relevance to pathophysiology of Dent's disease.
Reed, Anita A. C.; Loh, Nellie Y.; Terryn, Sara et al

in American Journal of Physiology - Renal Physiology (2010), 298(2), 365-80

Renal tubular reabsorption is important for extracellular fluid homeostasis and much of this occurs via the receptor-mediated endocytic pathway. This pathway is disrupted in Dent's disease, an X-linked ... [more ▼]

Renal tubular reabsorption is important for extracellular fluid homeostasis and much of this occurs via the receptor-mediated endocytic pathway. This pathway is disrupted in Dent's disease, an X-linked renal tubular disorder that is characterized by low-molecular-weight proteinuria, hypercalciuria, nephrolithiasis, and renal failure. Dent's disease is due to mutations of CLC-5, a chloride/proton antiporter, expressed in endosomes and apical membranes of renal tubules. Loss of CLC-5 function alters receptor-mediated endocytosis and trafficking of megalin and cubilin, although the underlying mechanisms remain to be elucidated. Here, we report that CLC-5 interacts with kinesin family member 3B (KIF3B), a heterotrimeric motor protein that facilitates fast anterograde translocation of membranous organelles. Using yeast two-hybrid, glutathione-S-transferase pull-down and coimmunoprecipitation assays, the COOH terminus of CLC-5 and the coiled-coil and globular domains of KIF3B were shown to interact. This was confirmed in vivo by endogenous coimmunoprecipitation of CLC-5 and KIF3B and codistribution with endosomal markers in mouse kidney fractions. Confocal live cell imaging in kidney cells further demonstrated association of CLC-5 and KIF3B, and transport of CLC-5-containing vesicles along KIF3B microtubules. KIF3B overexpression and underexpression, using siRNA, had reciprocal effects on whole cell chloride current amplitudes, CLC-5 cell surface expression, and endocytosis of albumin and transferrin. Clcn5(Y/-) mouse kidneys and isolated proximal tubular polarized cells showed increased KIF3B expression, whose effects on albumin endocytosis were dependent on CLC-5 expression. Thus, the CLC-5 and KIF3B interaction is important for CLC-5 plasma membrane expression and for facilitating endocytosis and microtubular transport in the kidney. [less ▲]

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See detailClé de détermination des restes crâniens de poissons collectés sur les rives nord du lac Tanganyika et de ses environs
NASASAGARE, Régine Pacis; Libois, Roland ULg

in Bulletin scientifique de l'Institut national pour l'environnement et la conservation de la nature (2012), 10

Lake Tanganyika is very rich in fish species. It is exploited by fishermen and by fish-eating birds often seen as competitors of man. An osteological study was undertaken to establish a methodological ... [more ▼]

Lake Tanganyika is very rich in fish species. It is exploited by fishermen and by fish-eating birds often seen as competitors of man. An osteological study was undertaken to establish a methodological tool as a basis to studying the diet of fish-eating birds. Fish were collected, grouped by family. They were then transported to the laboratory to extract features of the cranial bones of each species or genus. An identification key to these bones has been prepared based on the similarities and differences between these bones. Correlations between the length of bone characteristics and size of fish were calculated. [less ▲]

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See detailLa clé de saint Hubert
George, Philippe ULg; Weber, Georges ULg; martinot lucien

in Feuillets de la Cathédrale de Liège (1995)

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See detailLa clé de saint Hubert, palladium de la cité épiscopale
George, Philippe ULg; Weber, Georges ULg; Martinot, Lucien

in Liège. Autour de l'an mil, la naissance d'une principauté (Xe-XIIe siècle) (2000)

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See detailLa clé des champs au risque de mettre la clé sous la porte
Graas, Christelle; Noel, Véronique; argento, gino et al

in Revue des Hôpitaux de Jour Psychiatriques et des Thérapies Institutionnelles (2002), 5

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See detailLa clé est aux intersections...
Bidaine, Benoît ULg

Learning material (2011)

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See detailLa clé sous la porte: vers un nouvel horizon
Lebas, Maud; Thomas, Aurore; Weber, Davy et al

in Revue des Hôpitaux de Jour Psychiatriques et des Thérapies Institutionnelles (2006), 8

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See detailClean Coal Technologies and Carbon Capture and Storage in Kazakhstan – Reflections and ACCESS project results
Nesladek,, Milos; Helsen, S; Piessens, Kris et al

Book published by Royal Belgian Institute of Natural Sciences (2013)

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See detailClean Development Mechanisms (CDM) and Sustainable Development in South Countries
Ozer, Pierre ULg

Conference (2009, June 13)

The Clean Development Mechanism (CDM) allows emission-reduction (or emission removal) projects in developing countries to earn Certified Emission Reduction (CER) credits, each equivalent to one tonne of ... [more ▼]

The Clean Development Mechanism (CDM) allows emission-reduction (or emission removal) projects in developing countries to earn Certified Emission Reduction (CER) credits, each equivalent to one tonne of CO2. These CERs can be traded and sold, and used by industrialized countries to a meet a part of their emission reduction targets under the Kyoto Protocol. The mechanism stimulates sustainable development and emission reductions, while giving industrialized countries some flexibility in how they meet their emission reduction limitation targets. Accepted projects must qualify through a rigorous and public registration and issuance process designed to ensure real, measurable and verifiable emission reductions that are additional to what would have occurred without the project. Between November 2004 and May 2009, the mechanism has registered 1653 projects and is anticipated to currently produce CERs amounting to 303 106 tonnes of CO2 equivalent yearly. The mechanism is extremely interesting since it is the first global, environmental investment and credit scheme of its kind, providing a standardized emissions offset instrument. However the geographical distribution of the CDM projects is revealing very large differences in between developing countries since China, India, Brazil and South-Korea totalise 82% of the CERs while Africa only represents 3,3% of the total. [less ▲]

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See detailClean Development Mechanisms (CDM) and Sustainable Development in South Countries
Ozer, Pierre ULg

in De Dapper, Morgan; Swinne, Danielle; Ozer, Pierre (Eds.) Developing Countries facing Global Warming: a Post-Kyoto Assessment. (2010)

The Clean Development Mechanism (CDM) allows emission reduction (or emission removal) projects in developing countries to earn Certified Emission Reduction (CER) credits, each equivalent to one tonne of ... [more ▼]

The Clean Development Mechanism (CDM) allows emission reduction (or emission removal) projects in developing countries to earn Certified Emission Reduction (CER) credits, each equivalent to one tonne of CO2. These CERs can be traded and sold, and used by industrialized countries to meet a part of their emission reduction targets under the Kyoto Protocol. The mechanism stimulates sustainable development and emission reductions, while giving industrialized countries some flexibility in how they meet their emission reduction limitation targets. Accepted projects must qualify through a rigorous and public registration and issuance process designed to ensure real, measurable and verifiable emission reductions that are additional to what would have occurred without the project. Between November 2004 and May 2009, the mechanism has registered 1,653 projects and is anticipated to currently produce CERs amounting to 303 106 tonnes of CO2 equivalent yearly. The mechanism is extremely interesting since it is the first global, environmental investment and credit scheme of its kind, providing a standardized emissions offset instrument. However the geographical distribution of the CDM projects is revealing very large differences in between developing countries since China, India, Brazil and South-Korea totalise 82 % of the CERs while Africa only represents 3,3% of the total. [less ▲]

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See detailClean-up and determination of Organochlorine and Organobromine Compounds
Pirard, Catherine ULg; Douny, Caroline ULg; Eppe, Gauthier ULg et al

in Organohalogen Compounds (2002)

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See detailCleanability assessment of model solid surfaces with a radial-flow cell
Detry, Jean G; Rouxhet, Paul G; Boulange-Petermann, Laurence et al

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2007), 302(1-3), 540-548

The cleanability of several model solid substrates (glass, stainless steel, polystyrene and polytetrafluoroethylene-PTFE) was studied with a radial-flow cell. Two soiling methods were used to mimic ... [more ▼]

The cleanability of several model solid substrates (glass, stainless steel, polystyrene and polytetrafluoroethylene-PTFE) was studied with a radial-flow cell. Two soiling methods were used to mimic splashing with oil; a thin layer chromatography sprayer giving a narrower and more reproducible oil droplet size distribution was preferred. Glass was the most cleanable substrate, a result which may be consistent with the presence of a swelling gel-like layer at the surface. For the other substrates, the mechanical action exerted by the fluid played a major role in oil removal; however the detergent seemed to intervene after about 5-10 min, facilitating cleaning of PTFE. Oil droplet removal took place only at high wall shear stress, in zones where flow conditions where not well controlled making it impossible to evaluate the wall shear stresses needed for oil droplet removal. Evaluation of cleanability by using the radial-flow cell is restricted to variations of wall shear stresses in a range below 3 N m(-2). (C) 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailCleanrooms and tissue banking how happy I could be with either GMP or GTP?
Klykens, J; Pirnay, JP; Verbeken, G et al

in Cell and Tissue Banking (2013)

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See detailA clear and present danger tick borne diseases in Europe
Heyman, P.; Cochez, C.; Hofhuis, A. et al

in Expert Review of Anti-infective Therapy (2010), 8(1), 33-50

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See detailClear Cell Sarcoma: An Extremely Rare Cause of Pleural Disease
BURY, Thierry ULg; HERMANS, Gilberte ULg; Alexis-Agnant, R. et al

in European Respiratory Journal (1997), 10(11), 2653-6

We present the case of a 36 yr old woman with a persisting complaints of left chest pain. A chest radiograph revealed multiple left pleural thickenings. Classical exploration was negative. Thoracic ... [more ▼]

We present the case of a 36 yr old woman with a persisting complaints of left chest pain. A chest radiograph revealed multiple left pleural thickenings. Classical exploration was negative. Thoracic surgery allowed the subtotal removal of a huge pleural tumour. The histological examination revealed a clear cell sarcoma. The literature on this extremely rare tumour is reviewed. [less ▲]

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