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See detailPossibilities and limits of application of electrical resistance tomography in hydrodynamics of bubble columns
Toye, Dominique ULg; Fransolet, E.; Simon, Daniel ULg et al

in Canadian Journal of Chemical Engineering (2005), 83(1), 4-10

Knowing the hydrodynamic regime in which is working a bubble column is of great importance because the regime affects strongly the mass transfer between the phases. To this end, we examine the ... [more ▼]

Knowing the hydrodynamic regime in which is working a bubble column is of great importance because the regime affects strongly the mass transfer between the phases. To this end, we examine the potentialities of an Electrical Resistance Tomography (ERT) device. We analyse cross correlation of electrode pair measurements, of neighbouring pixels and power spectra of averaged pixels within a single plane as well as cross correlations of averaged pixels between two planes, without finding a clear signature of the churn turbulent flow. Variable gas flow rate inputs are used to determine the time resolution of the ERT. [less ▲]

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See detailPossibilities for rutile extraction from Norwegian eclogite by flotation
Gaydardzhiev, Stoyan ULg; Sandvik, Knut

Scientific conference (1993)

Preliminary flotations tests towards rutile extraction from Norwegian eclogites (Verving deposit) have been carried out. Various sulfonate type flotation reagents (produced by Hoechts) have been tested ... [more ▼]

Preliminary flotations tests towards rutile extraction from Norwegian eclogites (Verving deposit) have been carried out. Various sulfonate type flotation reagents (produced by Hoechts) have been tested. Selectivity between rutile/pyroxene has been targeted. Rutile separation from pyrite and garnet has been further identified as principal problem. [less ▲]

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See detailPossibilities of astronomical spectroscopy in the infrared
Swings, Polydore ULg

in Publications of the Astronomical Society of the Pacific [=PASP] (1944), 56

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See detailPossibility of Fluorescence Phenomena in the Ultraviolet Spectrum of Symbiotic Stars and Long Period Variables
Swings, Jean-Pierre ULg; Swings, Polydore ULg

in Houziaux, Léo; Butler, H. E. (Eds.) Ultraviolet Stellar Spectra and Related Ground-Based Observations : IAU symposium, held in Lunteren, The Netherlands, 24-27 June, 1969 (1970)

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See detailThe possible appearance of a second period in the WN 5 star EZ Canis Majoris
Gosset, Eric ULg; Vreux, Jean-Marie ULg

in Astronomy and Astrophysics (1987), 178

Previously published photometric data on EZ Canis Majoris are reanalyzed. It is shown by different techniques that a sine-wave type periodicity close to one third of the claimed period of P = 3[SUP]d[/SUP ... [more ▼]

Previously published photometric data on EZ Canis Majoris are reanalyzed. It is shown by different techniques that a sine-wave type periodicity close to one third of the claimed period of P = 3[SUP]d[/SUP].766 may also be present in what was considered as peculiarities in the lightcurve. The data available do not allow to known if this second period is precisely equal or only close to one third of P nor if there is some dependence between the two. In any case, the mere possible existence of such a second period is an interesting fact in the discussion concerning the possible existence of non-radial pulsations in some WR stars. [less ▲]

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See detailA possible auroral signature of a magnetotail reconnection process on Jupiter
Grodent, Denis ULg; Gérard, Jean-Claude ULg; Clarke, J. T. et al

in Journal of Geophysical Research. Space Physics (2004), 109(A5),

[1] Several theoretical models and in situ observations consistently suggest that the process of nightside reconnection associated with Earth's magnetospheric substorms is also taking place in the ... [more ▼]

[1] Several theoretical models and in situ observations consistently suggest that the process of nightside reconnection associated with Earth's magnetospheric substorms is also taking place in the midnight tail region of Jupiter. We report the observation of a new auroral feature which takes the form of isolated spots appearing near the northern dusk-midnight limb, poleward of the main auroral oval. This feature was clearly detected in three HST-STIS data sets obtained on 14, 16, and 18 December 2000. Its position poleward of the main auroral oval, and lagging corotation, shows that it is magnetically connected to a distant region of the nightside magnetosphere. It is therefore suggested that these transient spots are the auroral signatures of reconnection processes occurring in the nightside tail of the distant Jovian magnetosphere. The cause of this reconnection is somewhat analogous to the case of a solar coronal mass ejection, so one may refer to it as a "Jovian mass ejection.'' [less ▲]

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See detailThe possible biperiodicity of WR 40
Gosset, Eric ULg; Vreux, Jean-Marie ULg

in Astronomy and Astrophysics (1990), 231

Strong arguments are presented in favor of the simultaneous presence of two periodicities in the variability of the Wolf-Rayet star WR 40. The frequencies are nu(A) = 0.16/d and nu(B) = 0.40/d. Some ... [more ▼]

Strong arguments are presented in favor of the simultaneous presence of two periodicities in the variability of the Wolf-Rayet star WR 40. The frequencies are nu(A) = 0.16/d and nu(B) = 0.40/d. Some uncertainties remain concerning the choice of the actual one-year alias. On the basis of a detailed statistical analysis, reliable evidence that the variability related to nu(B) could be coherent is also presented: this points out nu(B) as a possible fundamental frequency linked to the 'core' of WR 40. No firm conclusion could be drawn about nu(A), suggesting that it could be a recurrent quasi-periodicity or a second order periodicity (e.g., a beat frequency). The two frequencies are sometimes hidden by the white noise, or slightly correlated, random process that constitutes the third component of the variability of WR 40. [less ▲]

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See detailPOSSIBLE COMPOSITION AND CLIMATIC CHANGES DUE TO PAST INTENSE ENERGETIC PARTICLE-PRECIPITATION
Hauglustaine, Didier A.; Gérard, Jean-Claude ULg

in Annales Geophysicae [= ANGEO] (1990), 8(2), 87-96

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See detailPossible consequences of the overlap between the CaMV 35S promoter regions in plant transformation vectors used and the viral gene VI in transgenic plants.
Podevin, Nancy; du Jardin, Patrick ULg

in GM crops & food (2012), 3(4), 296-300

Multiple variants of the Cauliflower mosaic virus 35S promoter (P35S) are used to drive the expression of transgenes in genetically modified plants, for both research purposes and commercial applications ... [more ▼]

Multiple variants of the Cauliflower mosaic virus 35S promoter (P35S) are used to drive the expression of transgenes in genetically modified plants, for both research purposes and commercial applications. The genetic organization of the densely packed genome of this virus results in sequence overlap between P35S and viral gene VI, encoding the multifunctional P6 protein. The present paper investigates whether introduction of P35S variants by genetic transformation is likely to result in the expression of functional domains of the P6 protein and in potential impacts in transgenic plants. A bioinformatic analysis was performed to assess the safety for human and animal health of putative translation products of gene VI overlapping P35S. No relevant similarity was identified between the putative peptides and known allergens and toxins, using different databases. From a literature study it became clear that long variants of the P35S do contain an open reading frame, when expressed, might result in unintended phenotypic changes. A flowchart is proposed to evaluate possible unintended effects in plant transformants, based on the DNA sequence actually introduced and on the plant phenotype, taking into account the known effects of ectopically expressed P6 domains in model plants. [less ▲]

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See detailPossible Contributions of Jatropha curcas L. to Rural Poverty Alleviation in Senegal : Vision and facts
Savery, S.; Toussaint, André; Defrise, L. et al

in Tropicultura (2008), 26(2), 125-126

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See detailPossible Contributions of Jatropha curcas L. to Rural Poverty Alleviation in Senegal: Vision and Facts
Saverys, S.; Toussaint, André ULg; Defrise, L. et al

in Tropicultura (2008), 26(2), 125-126

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See detailPossible contributions of space experiments to cometary physics
Swings, Polydore ULg

in SAO Special Report (1962), 111

Possible space experiments for observing the geometric, spectroscopic, and photometric behavior of comets are described. These experiments are proposed beacause an interpretation of cometary data may ... [more ▼]

Possible space experiments for observing the geometric, spectroscopic, and photometric behavior of comets are described. These experiments are proposed beacause an interpretation of cometary data may yield essential data on the formation and evolution of the solar system and the nature of interplanetary space. The various ways of obtaining significant planetary data are examined. These include the use of: (1) far ultraviolet observations by orbiting astronomical observatories; (2) artificial gaseous comets formed by high-altitude release of gases such as NH[SUB]3[/SUB]; (3) orbiting artificial cometary nuclei such as blocks of CO[SUB]2[/SUB] or NH[SUB]3[/SUB] ice, perhaps with an addition of meteoric material; and (4) fly-by p probes of a comet such as Encke's periodic comet. The significance of the data that would be obtained by each of these methods is predicted. [less ▲]

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See detailPossible detection of a 10-kilometer sized object around Neptune.
Roques, F.; Sicardy, B.; Bouchet, P. et al

in Bulletin of the American Astronomical Society (1984, September 01)

Not Available

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See detailPossible implementation of the payment to young farmers within the first pillar of the Common Agricultural Policy in Wallonia
Burny, Philippe ULg; Terrones Gavira, François ULg

in Atkociuniene, Vilma (Ed.) The Sixth International Scientific Conference "Rural Development 2013" : Proceedings, volume 6, book 1 (2013)

The new Common Agricultural Policy gives to the Member States the possibility to grant young farmers an additional financial support through the first pillar, several methods of calculation, according to ... [more ▼]

The new Common Agricultural Policy gives to the Member States the possibility to grant young farmers an additional financial support through the first pillar, several methods of calculation, according to diverse proposals (Commission, EU Parliament, Member States) are presented and their impact on the Walloon budget for direct payments (270 million € in 2020) is assessed, the maximal authorized share being 2% based on the situation observed in the 2006-2010 period, the mean and maximum amounts per young farmer in 2020 are calculated, giving the Walloon regional government the information to choose the way to support youg farmers. [less ▲]

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See detailPossible Influence of Surfactants and Proteins on the Efficiency of Contact Agar Microbiological Surface Sampling
Deckers, Sylvie M.; Sindic, Marianne ULg; Anceau, Christine ULg et al

in Journal of Food Protection (2010), 73(11), 2116-2122

Agar contact microbiological sampling techniques, based on a transfer of the microorganisms present on a surface to a culture medium, are widely used to assess and control surface cleanliness and to ... [more ▼]

Agar contact microbiological sampling techniques, based on a transfer of the microorganisms present on a surface to a culture medium, are widely used to assess and control surface cleanliness and to evaluate microbial contamination levels. The effectiveness of these techniques depends on many environmental parameters that influence the strength of attachment of the bacteria to the surface. In the present study, stainless steel and high density polyethylene surfaces were inoculated with known concentrations of Staphylococcus epidermidis. Following an experimental design, the surfaces were sampled with different types of replicate organism direct agar contact plates and Petrifilm; results indicated that recovery rates were influenced by the presence of egg white albumin or Tween 80 in the inoculum solutions or by the introduction of surfactants into the contact agar of the microbiological sampling techniques. The techniques yielded significantly different results, depending on sampling conditions, underlining the need for a standardization of laboratory experiments to allow relevant comparisons of such techniques. [less ▲]

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See detailPossible intracellular effect of the new water-soluble form of curcumin (NDS27) on the oxidant response of stimulated neutrophils
Derochette, Sandrine ULg; Mouithys-Mickalad, Ange ULg; Deby-Dupont, Ginette et al

Poster (2012, April 18)

Neutrophils (PMNs) are involved in host defense against infections through the production of reactive oxygen species (ROS) to kill pathologic agents. But, an excessive ROS production, called “oxidative ... [more ▼]

Neutrophils (PMNs) are involved in host defense against infections through the production of reactive oxygen species (ROS) to kill pathologic agents. But, an excessive ROS production, called “oxidative stress” is associated with tissue damages and development of chronic or acute inflammatory diseases. PMNs are prime therapeutic targets to control inflammatory events associated to ROS production. Nowadays, there is a growing interest for the use of polyphenolic molecules to modulate the inflammatory response. The aim of this work was to study the antioxidant effect of NDS27 (1), a new highly water-soluble form of the polyphenolic molecule curcumin, on in vitro stimulated equine PMNs. NDS27 (10-6 to 10-4 M) was pre-incubated with cells and eliminated before their activation. The ability of NDS27 to enter into the cells was checked by HPLC from the cellular extracts. The intracellular ROS production by phorbol myristate acetate (PMA) stimulated PMNs was measured by fluorescence using 2’,7’-dichlorofluorescin diacetate. Lucigenin dependent chemiluminescence was used to measure extracellular ROS production. Additionally, the effect of NDS27 was tested on the activity of myeloperoxidase (MPO), a hemic enzyme contributing to the oxidant response of neutrophils. The activity of the released MPO by cytochalazine B (CB) and N-formyl-methionyl-leucyl-phenylalanine (fMLP) stimulated PMNs was measured by SIEFED (“Specific Immunologic Extraction Followed by Enzymatic Detection”) (2). The HPLC results showed that NDS27 enters into PMNs and interacts with their membrane. NDS27 significantly and dose-dependently inhibited the ROS production in neutrophils without affecting their viability. Likewise, the activity of MPO released by PMNs was lowered by NDS27. Overall, our findings demonstrate that the membrane of neutrophils is permeable to NDS27 or interacts with the drug, suggesting that its inhibitory effect on ROS production is mainly associated to an intracellular effect probably by acting on the enzymes implied in respiratory burst like NADPH oxidase and MPO. The modulatory effect of NDS27 towards the oxidant activity of cells involved in immune and inflammatory response open therapeutic perspectives to control equine or human pathologies with excessive inflammatory reactions. 1. Neven et al. 2011, Patent Application Publication: US2011/0257126 A1 2. Serteyn et al. 2005, European Patent Specification : EP1711817 B1 [less ▲]

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See detailPossible linkage between TaqI restriction fragment length polymorphism (RFLP) for bovine growth hormone (GH) and milk traits
Prandi, Alberto; Falaki, Mohammed; Formogoni, A. et al

Poster (1994)

Detailed reference viewed: 11 (0 ULg)