Culture of lactic acid bacteria : chemical engineering aspects

Conference (2003, October 10)

Resistance testing challenges and reliability. MIC testing in the clinical laboratory today.

Conference (2003, October 03)

Multimarker approach to risk stratification

Conference (2003, October)

Re-commissioning of the CA-MET HVAC system : a successful case study ?

Conference (2003, October)

Commissioning is a unique opportunity, for all partners concerned, to learn a lot about the real behavior of a HVAC system. It has to start from comfort and health requirements in occupancy zones, and ... [more ▼]

Commissioning is a unique opportunity, for all partners concerned, to learn a lot about the real behavior of a HVAC system. It has to start from comfort and health requirements in occupancy zones, and going back to the plant through the whole air conditioning system. Focus is given here to the so-called “re-commissioning” and the proposed principles are illustrated by reference to a specific case study: the “CAMET” building. The "CA-MET" is a new ministry office building, designed for an occupancy of about 1000 people and located in the city of Namur, in Belgium. The building is cooled, thanks to a VAV/CAV system. Heating is provided independently by a classical hydronic radiator system. By lack of time, here as usually, the HVAC initial commissioning was done in a hurry… And, as soon as starting his job, the manager received a fair amount of complaints from the building occupants. The building was selected as a "good" case study to illustrate the work developed in the frame of the IEA-ECBCS "annex 40" project… This paper is presenting the methodology used in the first re-commissioning phase, some examples of results and also some general recommendations. [less ▲]

Epidémiologie de la pression artérielle chez l’adolescent.

Conference (2003, September 20)

Intérêt du BNP pour le diagnostic, le pronostic et le suivi thérapeutique de l'insuffisance cardiaque

Conference (2003, September 18)

Synthèse et caractérisation de catalyseurs métalliques supportés sur carbone de texture contrôlée par procédé sol-gel

Conference (2003, September 15)

Estimation of surface soil organic matter by means of hyperspectral data analysis.

Conference (2003, September 04)

This presentation shows results from two different hyperspectral instruments for the assessment of soil organic content of agricultural soils in southern Belgium.

Prevention of human errors

Conference (2003, September)

Elevated atmospheric CO2 influences ammonia oxidiser community structure and net nitrification

Conference (2003, September)

The control of soil nitrogen (N) availability under elevated atmospheric CO2 is central to predicting changes in ecosystem carbon storage and primary productivity. The effects of elevated CO2 on ... [more ▼]

The control of soil nitrogen (N) availability under elevated atmospheric CO2 is central to predicting changes in ecosystem carbon storage and primary productivity. The effects of elevated CO2 on belowground processes have so far attracted limited research and they are assumed to be controlled by indirect effects through changes in plant physiology and chemistry. In this study, we investigated the effects of a 4-year exposure to elevated CO2 (ambient + 400 μmol mol-1) in open top chambers under Scots pine (Pinus sylvestris L.) on net nitrification and the community of ammonia-oxidising bacteria. Net nitrate production was significantly increased for soil from the elevated CO2 treatment in the field when incubated in the laboratory under elevated CO2, but there was no effect when incubated under ambient CO2. Net nitrate production of the soil originating from the ambient CO2 treatment in the field was not influenced by laboratory incubation conditions. These results indicate that a direct effect of elevated atmospheric CO2 on soil microbial processes might take place. Molecular analysis of the ammonia-oxidising bacteria from the same soils before laboratory incubation was investigated using a PCR-based approach targeting the 16S rRNA gene of beta-subgroup ammonia oxidisers. After specific PCR, DGGE (Denaturing Gradient Gel Electrophoresis) and sequence analysis were used to determine ammonia-oxidiser community structure. First results indicate the disappearance of Nitrosospira clusters I, II and III under elevated CO2 but also call for systematic analysis of replicates to take into account methodological and sample variability. [less ▲]

Irrigation avec les eaux usées traitées : manuel d'utilisation.

Conference (2003, September)

Optimisation de l'irrigation localisée avec les eaux usées traitées.

Conference (2003, September)

Wastewater recycling of olive mills in Mediterranean countries : Demonstration and sustainable reuse of residuals.

Conference (2003, September)

L'implantation: premier dialogue entre la mère et l'embryon

Conference (2003, September)

Building an Euopean Set of Indicators on Educational Equity: Reactions within the International Scientific Community and of the Politics, dans le cadre de la session du Réseau 23 Policy Studies and Politics of Education

Conference (2003, September)

Biogeochemistry of the Scheldt estuary and plume

Conference (2003, September)

Influence of aluminium and silicon on the kinetics of bainite transformation of intercritical austenite: experimental study and modelling attempts

Conference (2003, August 28)

The presence of oxgal stimullates b-galactosidase activity in three strains of lactobacillus plantarum

Conference (2003, August 24)

Ruthenium N-heterocyclic carbene complexes: Versatile catalysts precursors for olefin metathesis, olefin cyclopropanation, and radical reactions

Conference (2003, August)

N-heterocyclic carbenes are divalent carbon species, which are commonly used as neutral, two-electron ligands with a negligible p-back-bonding tendency. They behave as phosphine mimics, yet they are ... [more ▼]

N-heterocyclic carbenes are divalent carbon species, which are commonly used as neutral, two-electron ligands with a negligible p-back-bonding tendency. They behave as phosphine mimics, yet they are better s-donors and they form stronger bonds to metal centres than most phosphines. Their electronic and steric properties are liable to ample modification simply by varying the substituents on the nitrogen atoms. Therefore, N-heterocyclic carbenes constitute a promising new class of ligands available for catalyst engineering and fine tuning, and a great deal of attention has been paid to them recently. We found that the 18-electron complex RuCl2(p-cymene)(PCy3) was a versatile and efficient promoter for the ring-opening metathesis polymerisation of both strained and low-strain cyclic olefins when activated by a suitable carbene precursor such as trimethylsilyl-diazomethane. RuCl2(p-cymene)(PCy3) was also an excellent catalyst for ATRP (Atom Transfer Radical Polymerisation) of methyl methacrylate and styrene. Here, we present preliminary results obtained in olefin metathesis, olefin cyclopropanation, and radical reactions (ATRP and Kharasch addition) when tricyclohexylphosphine was substituted by an N-heterocyclic ligand. [less ▲]

Comprehensive Analysis of PBDEs, PCDD/Fs and PCBs

Conference (2003, August)

How Daphnia maintain its homeostasis

Conference (2003, July 16)

Accueil et accompagnement des spectateurs: Le Fan coaching

Conference (2003, June 24)

Préparation et l’organisation de grandes manifestations sportives par les autorités locales et régionales en Europe: S’agissant de la sécurité dans et aux alentours des stades, conception et entretien des ... [more ▼]

Préparation et l’organisation de grandes manifestations sportives par les autorités locales et régionales en Europe: S’agissant de la sécurité dans et aux alentours des stades, conception et entretien des stades, coordination entre les différents services et les niveaux d’autorités impliqués (national, régional, local) ; rôle des médias dans la gestion et la prévention des crises ; rôle du personnel d’encadrement (stadiers) à l’intérieur des stades pour prévenir la violence (formation); répartition des places dans les stades (séparation des spectateurs d’équipes rivales) par un système de contrôle et de vente des billets ; Concernant l’accueil et l’accompagnement des spectateurs : encadrement des spectateurs : par des stands d’accueil des supporters visiteurs dans les villes d’accueil « Ambassades de supporters » ; par un accompagnement socio-éducatif permanent des supporters (« fan-coaching ») ; enseignements des « bonnes pratiques » diffusées dans le cadre du Réseau européen « EUROFAN » ; S’agissant de la participation de la population locale, conception associant la population locale à des animations socio-culturelles dans les villes d’accueil. [less ▲]

Diane Project: Women’s Entrepreneurship

Conference (2003, June 16)

Trophic links in the lowland river Meuse (Belgium): importance of the predation exerted by rotifers on bacterio- and protozooplankton.

Conference (2003, June 07)

Trophic interactions within the plankton of the lowland river Meuse (Belgium) were measured in Spring and Summer (2001). Consumption of bacteria by protozoa was measured by monitoring the radioactivity ... [more ▼]

Trophic interactions within the plankton of the lowland river Meuse (Belgium) were measured in Spring and Summer (2001). Consumption of bacteria by protozoa was measured by monitoring the radioactivity disappearance of 3H-thymidine labelled bacteria. The proportion of protozoan bacterivory attributable to flagellates and ciliates was determined with fluorescently labelled bacteria (FLB). Metazooplankton bacterivory was assessed with 0.5 µm fluorescent microparticles (FMPs) and predation of metazooplankton on ciliates was measured by using natural ciliate assemblages labelled with FMPs as tracer food. Grazing of metazooplankton on flagellates was determined through in situ incubations with manipulated metazooplankton densities. flagellates were the main bacterial consumers their grazing being 91  10 % of total bacterial grazing. Metazooplankton, essentially rotifers, grazing on bacteria was negligible compared to grazing by protozoa and to bacterial production. Protozoa grazing balanced bacterial production in early samplings but was lower in July. Predation of rotifers on heterotrophic flagellates (HF) was generally low (1.765 3.432 mg C m-3 d-1 ), the higher contribution of HF in the diet of rotifers being observed when Keratella cochlearis was the dominant metazooplankter. Predation of rotifers on ciliates was low in the first samples (0.557  0.004 mg C m-3 d-1) in contrast to measurements performed in July (8.722  1.363 mg C m-3d-1). The proportion of protozoa in the diet of rotifers was generally low compared to phytoplankton (< 30% of total carbon ingestion) except when phytoplankton biomass decreased below the incipient limiting level (ILL) of the main metazooplantonic species. In such conditions, protozoa (mainly ciliates) constituted ca. 50% of total rotifer food. These results give evidence that microbial organisms play an important role within the plankton of the river Meuse, ciliates providing an alternative food for metazooplankton when phytoplankton becomes scarce. [less ▲]

Réactivité du tétroxyde d’osmium et des osmates vis-à-vis des séléniures et des sélénoxydes: Application à la synthèse d’alcools allyliques et à la dihydroxylation énantiosélective d’oléfines

Conference (2003, June)

Long range seasonal movements of northern pike (Esox lucius L.) in the barbel zone of the River Ourthe (River Meuse basin, Belgium).

Conference (2003, June)

In order to study the annual activity cycle and reproductive ecology of northern pike (Esox lucius L.) in the River Ourthe (Belgian Ardenne), 6 fish (579-742mm FL, 1605-4090g, 2 females and 4 males) were ... [more ▼]

In order to study the annual activity cycle and reproductive ecology of northern pike (Esox lucius L.) in the River Ourthe (Belgian Ardenne), 6 fish (579-742mm FL, 1605-4090g, 2 females and 4 males) were captured by electric fishing in November 2000 and January 2001. They were surgically implanted with a radio-transmitter and tracked for 149 to 349 days in a 30-km river stretch. During the pre-spawning period in winter, most movements were between distinct holding areas spaced from 40 to 550 m. All the pike began the upstream spawning migration between 8 February and 30 March 2001, when the mean water temperature varied from 6.7°C to 8.7 °C and the water flow from 52 to 199 m3s-1. The six pike travelled upstream, over distances ranging from 0.75 km to 15.7 km to reach their potential spawning sites. Pike arrived on their potential spawning sites between the 13 February and the 02 April 2001 and remained there from 5 to 25 days when the daily mean water temperature ranged from 2.9 to 10.0 °C. The six pike moved downstream after spawning and showed similar behaviour to those observed prior to spawning, but the distances between holding areas were more extended than during the winter pre-spawning period. When considering the entire tracking period, the longitudinal extension of the activity domains ranged 1 421 to 24 798 m (mean 12,050 m). This exploratory study provided original observations on northern pike movements in a barbel zone of the River Meuse basin. Results contrasted with the widely established view of pike being a sedentary predator and provides data on its behaviour throughout the annual cycle. [less ▲]

The use of the TOSOH AIA-600II and AIA-1800 immunoassay analyzers for the determination of cTnI

Conference (2003, June)

GIS and hydrogeological mapping of the Walloon Region (Belgium).

Conference (2003, June)

Feedback Mechanisms in Intra-Cellular Dynamics

Conference (2003, May 29)

Acoustic-emission and dilatometric investigations of the influence of Cr on the austenite decomposition kinetics

Conference (2003, May 22)

The interest of small additions of Cr (< 3 wt%) in steels for automotive and bearing applications has been recently highlighted. The microstructure of these steels is primarily based on the bainitic phase ... [more ▼]

The interest of small additions of Cr (< 3 wt%) in steels for automotive and bearing applications has been recently highlighted. The microstructure of these steels is primarily based on the bainitic phase. Therefore, in order to optimize their microstructure and mechanical properties, it is of primary importance to gain a better understanding of the influence of Cr on austenite decomposition in different temperature regimes with a particular attention for the transition from ferrite to bainite and martensite formation. In the present study, the acoustic emission technique is used together with dilatometry and optical microscopy in order to obtain a full view of the transformation processes and kinetics. Specifically, acoustic emission is a technique that is capable of distinguishing a displacive from a diffusional transformation. [less ▲]

A new tool for measuring positive and negative occupational stress : preliminary results of validation studies.

Conference (2003, May 17)

Apprendre l'histoire à l'heure des compétences

Conference (2003, May 15)

Contrôle de qualité interne: aspects pratiques

Conference (2003, May 09)

Influence of cyclodextrins on the solubility and the stability of cyproterone acetate

Conference (2003, May)

Effect of inhaled cyclodextrins on the pulmonary inflammation and bronchial hyperresponsiveness in mice

Conference (2003, May)

Influence of the Aral Sea negative water balance on its seasonal circulation : use of a 3D hydrodynamic model

Conference (2003, May)

Caractérisation et utilisation du micro-habitat du saumon atlantique (Salmo salar) selon la stucture turbulente del'écoulement.

Conference (2003, May)

ASSESSMENT OF UNCERTAINTY FROM ROBUSTNESS TESTING OF A LC METHOD FOR THE DETERMINATION OF R-TIMOLOL AND OTHER RELATED SUBSTANCES IN S-TIMOLOL MALEATE

Conference (2003, May)

What don’t we know about dying and dead seas ?

Conference (2003, May)

As conclusions of this NATO Advanced Research Workshop on Dying and Dead Seas, numerous questions remains concerning the various studied water bodies, all along their hydrological cycle and along their ... [more ▼]

As conclusions of this NATO Advanced Research Workshop on Dying and Dead Seas, numerous questions remains concerning the various studied water bodies, all along their hydrological cycle and along their anthropic perturbations. A synthesis of most important open questions is presented. [less ▲]

Dual activity of ruthenium catalysts in controlled radical reactions and olefin metathesis

Conference (2003, May)

The catalytic activity of five ruthenium-arene complexes of the RuCl2(p-cymene)L type was investigated in controlled radical reactions and olefin metathesis. The ligands L were stable Nheterocyclic ... [more ▼]

The catalytic activity of five ruthenium-arene complexes of the RuCl2(p-cymene)L type was investigated in controlled radical reactions and olefin metathesis. The ligands L were stable Nheterocyclic carbenes (NHCs) derived from imidazol-2-ylidene. They differed by the nature of the substituents on the nitrogen atoms (R1) and on the carbon-carbon double bond (R2) of the heterocyclic ring. Thus, R1 was either the mesityl or the cyclohexyl group, and R2 included methyl, hydrogen, or chloro substituents.The complexes were tested as initiators for the Atom Transfer Radical Addition (ATRA) of carbon tetrachloride to methyl methacrylate and styrene, for the Atom Transfer Radical Polymerization (ATRP) of methyl methacrylate and styrene, and for the Ring-Opening Metathesis Polymerization (ROMP) of cyclooctene. Some species displayed a dual activity and promoted both olefin metathesis and ATRP. [less ▲]

Global water and salt budget of the Aral Sea from 1960 to 1991.

Conference (2003, May)

Focusing on the global water and salt budget of the Aral sea from 1960 till 1991, a compilation of data available in the litterature is analysed with simple models and compared to the measured evolution ... [more ▼]

Focusing on the global water and salt budget of the Aral sea from 1960 till 1991, a compilation of data available in the litterature is analysed with simple models and compared to the measured evolution of the sea. [less ▲]

Coupling GIS with database for hydrogeological mapping.

Conference (2003, May)

Le col circulaire comme articulation flexible

Conference (2003, May)

Nous présentons un modèle permettant de déterminer les dimensions du col, R et ho, en fonction du matériau, de l'angle de rotation désiré et du nombre de cycles envisagé. Dans le cas du col circulaire ... [more ▼]

Nous présentons un modèle permettant de déterminer les dimensions du col, R et ho, en fonction du matériau, de l'angle de rotation désiré et du nombre de cycles envisagé. Dans le cas du col circulaire, les équations de base de la résistance des matériaux appliquées aux poutres à section variable admettent une solution analytique grâce à un changement de variable judicieux inspiré de la théorie de la lubrification. Pour un rapport entre l'épaisseur de col et son rayon tendant vers zéro, nous pouvons également dériver des formes asymptotiques des équations obtenues. Dans le cas de rapports ho/R moyens, ces résultats doivent être affectés de coefficients correcteurs qui dépendent eux-mêmes du rapport ho/R et que l'on détermine à partir des résultats numériques obtenus par la théorie complète. Ainsi, toutes les propriétés du col peuvent déduites grâce aux équations aux limites et à ces coefficients simples. [less ▲]

Diabète, hypertension artérielle et insuffisance rénale

Conference (2003, April 17)

Biological responses to CO2-related changes in seawater carbonate chemistry during a bloom of Emiliania huxleyi

Conference (2003, April 06)

Prise en charge par le généraliste du patient hypertendu

Conference (2003, April 05)

"Approche pratique du patient cardiaque en médecine générale"

Modelling the hydrodispersive behaviour of variably saturated chalk

Conference (2003, April 02)

The presentation dscribes the mathematical and numerical modelling of solute tracer experiments in variably saturated chalk

Comparison of auroral processes at Jupiter and Saturn

Conference (2003, April 01)

Extensive series of images of Jupiter's aurora have been obtained from HST and ground-based telescopes, while only a handful of images of Saturn's aurora have been taken to date and only with the HST ... [more ▼]

Extensive series of images of Jupiter's aurora have been obtained from HST and ground-based telescopes, while only a handful of images of Saturn's aurora have been taken to date and only with the HST. With the Cassini spacecraft approaching Saturn, it is timely to compare what we know of Saturn's aurora with the better-studied case of Jupiter. This presentation will summarize the basic features of Jupiter's auroral processes, give an overview of what we know about Saturn's auroral processes, and speculate on what might be learned from further studies at the time of Cassini approach to Saturn. [less ▲]

"Epuvalisation: a developing technique. Experiences, results in different countries.”

Conference (2003, April)

“Sustainability and optimisation of treatments and use of wastewater for irrigation in Mediterranean countries.”

Conference (2003, April)