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See detailMeasurement of ultra-trace levels of Dechloranes in food and feed. Assessment of dietary intake
Calaprice, Chiara ULg; L'Homme, Benjamin; Calvano, Cosima Damina et al

Conference (2015, April)

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See detailMeasurement of urinary biomarkers of parabens, benzophenone-3 and phthalates in a Belgian population
Dewalque, Lucas ULg; PIRARD, Catherine ULg; Charlier, Corinne ULg

in BioMed Research International (2014), 2014(Article ID 649314,), 1-13

Parabens, benzophenone-3 (BP3) and phthalates are commonly used as antimicrobial conservator, UV-filter and plasticizer respectively, and are thought to exhibit endocrine disrupting properties. These ... [more ▼]

Parabens, benzophenone-3 (BP3) and phthalates are commonly used as antimicrobial conservator, UV-filter and plasticizer respectively, and are thought to exhibit endocrine disrupting properties. These endocrine disrupting activities have been recently assumed to lead to cutaneous malignant melanoma. Humans are exposed to these chemicals through different sources such as food, personal care products or cosmetics. In this study we measured urinary levels of 4 parabens, BP3 and 7 metabolites of phthalates in samples collected from 261 participants living in and around Liege (Belgium). The analyses were carried out by liquid chromatography tandem mass spectrometry (LC-MS/MS) using isotopic dilution. To the best of our knowledge, this is the first time that the urinary levels of these 3 classes of chemicals are reported for the same general population in Belgium. Most of the parabens, the BP3 and all the phthalate metabolites were detected in 82.8 to 100.0% of the samples. For most of these chemicals, the exposure patterns significantly differ between children and adults, but also between males and females, especially with higher concentrations of parabens and phthalate metabolites in female and children subjects respectively. [less ▲]

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See detailMeasurement of urinary Coll2-1NO2 is predictif of joint space narrowing in knee osteoarthritis
Henrotin, Yves ULg; Kraus, V; Brandt, K et al

in Osteoarthritis and Cartilage (2012), 20(Suppl 1), 80

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See detailMeasurement requirements for environmental monitoring : application of the electronic nose principle.
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Andre, Philippe ULg

Conference (2000)

As regards environment, the information to be provided to the decision maker or to the manager must be clear, accurate, unambiguous, and ideally it should be the result of the aggregation of a great ... [more ▼]

As regards environment, the information to be provided to the decision maker or to the manager must be clear, accurate, unambiguous, and ideally it should be the result of the aggregation of a great number of data or parameters. For example, the person in charge of the security of a municipality must have at his disposal an information of the type "all or nothing" to be able to decide if the population must be evacuated in the event of a severe pollution. However, that very simple information should be the result of a calculation based on several time series of pollutant concentration values and of meteorological data. Even the farmer who wants to know if it is the right time to spread manure without affecting too much the environment must have a single information which should be the aggregation of some complex variables. The lecture presents the concept of some "integrated index", already used to assess the quality of the environment. For example, Organic Pollution Index combines 4 laboratory measurement values of pollutants in water to make a single index characterising the global pollution in a river. Some apparatus are able to compute the integrated index "on line" and to supply directly to the user the value of the medium quality. For example, the PMV index estimates globally the thermal comfort in a building from the on line measurement of 5 parameters. FUL has designed some "smart sensors" or "smart instrument" aiming at supplying such index. Two applications are presented. The first one concerns the measurement of soil quality by means of a porous sensor combining in a single index the measurement of temperature, salinity and water contents. But the lecture develops particularly a second application which exploits the principle of the "electronic nose" to assess, in a single "signature", the quality or the intensity of an environmental odour. Such instrument, equipped with an array of "non specific" gas sensors, should be able, after a suitable learning phase, to recognise the odour source and to monitor it continuously in the field. The instrument response is thus a "pattern", similar to an integrated index, directly related to the annoyance, as felt by neighbouring people. It gives thus an information which can be handled by a manager, and which is more rich than individual pollutant concentration values. FUL has tested such instrument in the environment. The results are promising : a first design of electronic nose was able to recognise 5 odorous sources in the environment, and a portable instrument has been used to monitor the odour around a landfill site. The same concept is now tested to appraise as a whole the indoor air quality in different buildings. [less ▲]

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See detailMeasurement uncertainty for persistent organic pollutants by isotope dilution mass spectrometry
Eppe, Gauthier ULg; Diletti, G; Fernandes, A et al

in Organohalogen Compounds (2014, September), 76

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See detailMeasurement uncertainty for the analysis of serum 25-hydroxyvitamin D: response to Stepman and Thienpont
Cavalier, Etienne ULg; Delanaye, Pierre ULg; Cormier, Catherine et al

in Osteoporosis International (2010), 21

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See detailMeasurement uncertainty of creatinine in low values: Another good reason not to use the MDRD formula with low creatinine values
Cavalier, Etienne ULg; Delanaye, Pierre ULg; Ferir, Anne-Marie et al

in Clinical Biochemistry (2007), 40(3-4), 285-286

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See detailMeasurement-induced spatial modulation of spontaneous decay and photon arrival times
von Zanthier, J.; Bastin, Thierry ULg; Agarwal, G. S.

in Physical Review. A (2006), 74

We report a way of manipulating the spontaneous emission process leading to a spatial modulation of spontaneous decay. The effect is observed in the case of coherently driven atoms separated by less than ... [more ▼]

We report a way of manipulating the spontaneous emission process leading to a spatial modulation of spontaneous decay. The effect is observed in the case of coherently driven atoms separated by less than a transition wavelength. It is quantified by Glauber's photon-photon second-order correlation function. We show that the photon arrival time, usually regarded as an entirely random process, depends not only on where a photon is detected but also on where a former photon had been recorded previously. Our results shed light on the unexpected consequences of state reduction and entanglement for the fundamental process of spontaneous emission. [less ▲]

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See detailMeasurement-induced spatial modulation of spontaneous decay and photon arrival times
von Zanthier, J.; Bastin, Thierry ULg; Agarwal, G. S.

Poster (2006)

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See detailMeasurement-induced spatial modulation of spontaneous decay and photon arrival times
von Zanthier, J.; Bastin, Thierry ULg; Agarwal, G. S.

Conference (2007)

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See detailMeasurements and modelization of light reflection on road pavement samples
Dijon, Jean-Marie; Embrechts, Jean-Jacques ULg; Brusten, Serge

in CIE Publication n°133 - Part 2 (1999)

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See detailMeasurements necessary for assessing the net ecosystem carbon budget of croplands
Smith, Pete; Lanigan, Gary; Kutsch, Werner L. et al

in Agriculture, Ecosystems & Environment (2010), 139(3), 302-315

There are a number of methods that can be used to help assess carbon budgets at the site to continental scales. Eddy covariance (EC) networks have been developed over the last decade and have been used to ... [more ▼]

There are a number of methods that can be used to help assess carbon budgets at the site to continental scales. Eddy covariance (EC) networks have been developed over the last decade and have been used to make many advances in our understanding. However, eddy covariance measurements of CO2 and water vapour exchanges quantify the fluxes only on short time scales, but do not assess the impacts of long-term processes that contribute to biogeochemical cycling in croplands, such as harvest or residue removal and other management practices, so many other supplementary measurements are required to attribute different components of the carbon flux. Such methods include isotope studies, chamber flux measurements of C and other greenhouse gases, inventories of above- and below-ground biomass as well as management in- and outputs, book-keeping modelling, process modelling, experimental manipulation and earth observation (e.g. remote sensing). In this review, we summarise the component fluxes that make up the total cropland carbon budget, describe the key fluxes and methods used to estimate them, and examine how they need to be integrated to obtain the net ecosystem carbon budget of European croplands. We describe the uncertainties and difficulties inherent at each stage and how these can be minimised. [less ▲]

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See detailMeasurements of air-ice CO2 fluxes over artificial sea ice emphasize the role of bubbles in gas transport
Kotovitch, Marie ULg; Moreau, Sébastion; Zhou, Jiayun et al

Poster (2015, March)

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See detailMeasurements of CH4, N2O, CO, H2O, and O3 in the middle atmosphere by the Atmospheric Trace Molecule Spectroscopy experiment on Spacelab 3
Gunson, M. R.; Farmer, C. B.; Norton, R. H. et al

in Journal of Geophysical Research. Atmospheres (1990), 95(D9), 13867--13882

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See detailMeasurements of Column Abundances of Nitrogen Dioxide, NO2, from the Ground During the Globus-NOx Campaign
Zander, Rodolphe ULg; Demoulin, Philippe ULg; Roland, Ginette et al

in Bojkov, Rumen D.; Fabian, Peter (Eds.) Ozone in the Atmosphere, Proceedings of the Quadrennial Ozone Symposium 1988 and Tropospheric Ozone Workshop (1989)

Detailed reference viewed: 14 (2 ULg)