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See detailPreliminary data on the stability of fillowite-type phosphates : an experimental investigation of the Na[Mn,Fe(II)]4(PO4)3 system
Rondeux, Mélanie ULg; Hatert, Frédéric ULg; Fransolet, André-Mathieu ULg

in Berichte der Deutschen Mineralogischen Gesellschaft : Beihefte zum European Journal of Mineralogy (2006), 18

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See detailPreliminary description of the diet of Hippopotamus amphibius L. in Loango National Park (Gabon)
Michez, Adrien ULg; Doucet, Jean-Louis ULg; Dendocker, Nicolas et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2013), 17(4), 580-583

Due to the paucity of suitable habitat, hippos are very rare in the Congo Bassin. Compared to East-African populations, Central African populations of hippos have been less studied. Information found in ... [more ▼]

Due to the paucity of suitable habitat, hippos are very rare in the Congo Bassin. Compared to East-African populations, Central African populations of hippos have been less studied. Information found in the literature regarding the animal’s basic ecology is limited. This study focuses on the description of the diet of an isolated hippo population in Loango National Park (Gabon), comparing faecal analysis with a reference collection ofherbaceous species from the savannas. The effectiveness of using faecal analysis versus using the floristic description of hippos’ pastures was demonstrated. The most frequent herbaceous species identified in faeces samples were Paspalum vaginatum, Axonopus compressus, Stenotaphrum secundatum (Poaceae) and Desmodium triflorum (Fabaceae). The voluntary consumption of a dicotyledonous species (Desmodium triflorum) is novel for this species. [less ▲]

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See detailPreliminary design of twin-cylinder engines
Louvigny, Yannick ULg

Master of advanced studies dissertation (2008)

This report deals with the preliminary design of a twin-cylinder engine. The goal of the work is not to make the detailed design of the engine but to draw the main characteristics of each kind of engine ... [more ▼]

This report deals with the preliminary design of a twin-cylinder engine. The goal of the work is not to make the detailed design of the engine but to draw the main characteristics of each kind of engine and to investigate which configuration of twin-cylinder engine matches in the best way to given requirements. A simple model is developed from the motion equations of the rotating and oscillating parts of piston engine. This model allows calculating the values of the inertia forces and moments for each angular position of the crankshaft. Different configurations of single-cylinder and twin-cylinder engines (including in-line or boxer, in-phase or out-of-phase motion of the piston) are considered. All of these configurations are characterized by their own set of forces and moments. As the free forces and moments are responsible for engine vibrations and thus vibrations of the vehicle and its passengers, a set of balancing solutions (modification of the crankshaft, addition of first or second order balance shafts) is considered to reduce these loads. This is the balancing of the engine. Great reductions of forces and moments can be obtained with more or less complex solutions. From a design point of view, the next step is to determine what level of vibration is acceptable and which solutions permit to reach this level. A model of a classical four-cylinder engine is made in order to serve as a reference for the comparison of the different configurations of twin-cylinder engine. In addition to the inertia forces, the combustion of the fuel inside the cylinder produces also forces and moments in the engine. To estimate the total forces and moments created by the engine, the gas pressure force is calculated for each configuration of the engine. The last step of this preliminary design consists in investigating the influence of design parameters that can impact the balancing of the engine. A sensitivity analysis is made with different design parameters of the engine (i.e. the mass of the piston, the mass and length of the connecting rod…) This analysis permits to know, depending of the configuration of the engine, which characteristics will require a greater attention during the design phases. [less ▲]

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See detailPreliminary design of twin-cylinder engines for hybrid electric vehicle applications
Louvigny, Yannick ULg; Christiaens, Sébastien; Duysinx, Pierre ULg

Conference (2009, March 10)

Most of HEV are built using existing engines. These engines have been developed for conventional car and are not especially tailored for HEV. The objectives of this work are to establish general ... [more ▼]

Most of HEV are built using existing engines. These engines have been developed for conventional car and are not especially tailored for HEV. The objectives of this work are to establish general requirements placed on an ICE for a HEV application, to draw the main characteristics of the engine and to find the best configuration of twin-cylinder ICE to motorize an HEV. The twin-cylinder engine offer interesting perspectives in the field of HEV thanks to its small size, low weight and low cost. [less ▲]

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See detailPreliminary development of real time PCR for quantification of Erwinia species infecting potato tubers.
Massart, Sébastien ULg; Moh, A.; Roussel, S. et al

in Communications in agricultural and applied biological sciences (2006), 71(3 Pt B), 1171-1173

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See detailPreliminary evaluation of a protocol for fast localized abdominal sonography in horses (FLASH) admitted for colic
Busoni, Valeria ULg; De Busscher, Virginie; Lopez, Diego et al

Poster (2006, August)

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See detailPreliminary evaluation of antimicrobial activity of some chemicals on in vitro apple shoots infected by 'Candidatus Phytoplasma mali'.
Aldaghi, M.; Massart, Sébastien ULg; Druart, Ph et al

in Communications in Agricultural and Applied Biological Sciences (2008), 73(2),

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See detailPreliminary Evaluation of Antimicrobial Residue Levels in Marketed Pork and Chicken Meat in the Red River Delta Region of Vietnam
pham kim, Dang; Degand, Guy ULg; Douny, Caroline ULg et al

in Food and Public Health (2013), 3(6), 267-276

The presence of antibacterial in 97 pork and 83 chicken meat samples, randomly collected from 3 different representative provinces (Hanoi, Hai Duong and Thai Binh) of the Red River Delta, was determined ... [more ▼]

The presence of antibacterial in 97 pork and 83 chicken meat samples, randomly collected from 3 different representative provinces (Hanoi, Hai Duong and Thai Binh) of the Red River Delta, was determined by a screening step using in parallel 2 microbiological methods (Premi®-test and New Two Plate Test). In total, 27% of all samples displayed a positive response in at least one of both tests, from which 11 (13% of chicken samples) are chicken samples and 38 (39% of pork samples) are pork samples. The 33 samples from the Thai Binh which were screened positive were then submitted to post-screening tests specific for tetracyclines and (fluoro) quinolones (Tetrasensor® dipstick for tetracyclines and an ELISA for quinolones), two groups of antibiotics widely used in animal production in this region, and confirmed by liquid chromatography coupled to mass spectrometry. Tetracyclines and (fluoro)quinolones residues were found, using a post screening test, in 23 and 5 samples, respectively. Ten (all pork) and 4 samples (1 pork, 3 chicken) were confirmed containing tetracyclines (chlortetracycline, oxytetracycline, tetracycline, doxycycline) and (fluoro) quinolones (nalidixic acid, enrofloxacin and ciprofloxacin) respectively, from which 1 and 3 pork samples were found to contain enrofloxacin and tetracycline residues , respectively, with a concentration higher than their respective MRLs. This study shows the good performance of the proposed strategy to identify non-compliant meat samples (microbiological screening, tetracyclines and quinolones targeted post-screening and confirmation), which allows to obtain conclusive results in 82% of the cases. [less ▲]

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See detailPreliminary experience of a modified Maquet technique for repair of cranial cruciate ligament rupture in dogs
Etchepareborde, Sébastien; Brunel, Laurencie ULg; Bolen, Géraldine ULg et al

in Veterinary and Comparative Orthopaedics and Traumatology (2011)

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See detailPreliminary experiments on barbel paternity analysis using DNA microsatellite finger printing.
Christiaens, T.; Georges, M.; Poncin, Pascal ULg et al

Conference (1994)

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See detailPreliminary experiments: High-energy alpha PIXE in archaeometry
Dupuis, Thomas ULg; Chene, Grégoire ULg; Mathis, François ULg et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2010), 268(11-12), 1911-1915

This paper describes the work realized at the "Centre Europeen d'Archeometrie" to highlight the utility of high-energy alpha PIXE in the particular field of archaeometry and to introduce the developments ... [more ▼]

This paper describes the work realized at the "Centre Europeen d'Archeometrie" to highlight the utility of high-energy alpha PIXE in the particular field of archaeometry and to introduce the developments done and to be clone to complete the knowledge of high-energy alpha PIXE. It starts with the comparison of the yield and the noise background between several alpha particle beams and the comparison between alpha particle and proton beams on different thick and thin references. After, this paper depicts the developments done at the "Institut de Physique Nucleaire, Atomique et Spectroscopie" to perform such high-energy experiments, first on standards and later on cultural heritage objects. Moreover, it introduces the problematics of such beams for the quantification in PIXE by the intermediary of the knowledge of the ionization and X-ray production cross-sections and also the developments done to answer to this serious lack in the databases. (C) 2010 Elsevier B.V. All rights reserved. [less ▲]

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See detailPreliminary insight into seed dispersal effectiveness of western lowland gorilla (Gorilla g. gorilla)
Petre, Charles-Albert ULg; Tagg, Nikki; Beudels-Jamar, Roseline et al

in de Crayencour, Frédéric (Ed.) Primate tidings (2011, October 26)

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See detailPreliminary insight into seed effectiveness of western lowland gorilla (Gorilla g.gorilla)
Petre, Charles-Albert ULg; Tagg, Nikki; Beudels-Jamar, Roseline et al

Scientific conference (2011, November 10)

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See detailPreliminary insight into seed effectiveness of western lowland gorilla (Gorilla g.gorilla)
Petre, Charles-Albert ULg; Tagg, Nikki; Beudels-Jamar, Roseline et al

in Primate Tidings (2011, December), 25

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See detailPreliminary insights in the feeding ecology of marine mammals from the Ligurian Sea through stable isotope and mercury measurements
Miglio, C.; Das, Krishna ULg; Lepoint, Gilles ULg et al

Poster (2005)

The Ligurian Sea, part of the Cetacean Sanctuary, is known to be a productive area hosting many marine mammal species of the Mediterranean Sea. Investigations on trophic relationship and pollutant ... [more ▼]

The Ligurian Sea, part of the Cetacean Sanctuary, is known to be a productive area hosting many marine mammal species of the Mediterranean Sea. Investigations on trophic relationship and pollutant monitoring are of primary importance for their conservation. As isotopic composition of an animal is related to that of its prey, ð13C and ð15N were measured by mass spectrometry in muscle of 12 striped dolphins (Stenella coeruleoalba), 1 bottlenose dolphin (Tursiops truncatus), 2 fin whales (Balaenoptera physalus), 3 Risso's dolphins (Grampus griseus), 1 Cuvier's beaked whale (Ziphius cavirostris) and 1 juvenile sperm whale (Physeter macrocephalus) stranded along the Ligurian coasts between 1991 and 2004. Hg concentration was also analysed in marine mammal liver by spectrometric absorption. Through ð13C and ð15N measurements, two marine mammal groups appeared: the first group characterised by high ð13C and ð15N values (mean values: -17.5‰ and 11.0‰ respectively) included the sperm whale, the bottlenose dolphin, the Risso’s dolphin and the beaked whale. The second group including striped dolphin and fin whale displayed lower mean ð13C than the first group (-18,48‰), with the fin whale showing the lowest ð15N value (8,8‰ ± 0,7). Our isotopic data are in good agreement with previously described feeding habits: the first group obviously fed at a higher trophic level and in more coastal waters associated with the continental slope while the second fed offshore, with the fin whale occupying the lowest trophic position. Hg concentrations reflected a similar pattern, with the lowest value observed in the fin whale (mean value: 0.1 µg.g-1 dw) and the highest in both the bottlenose dolphin (3769 µg.g-1 dw) and the Risso’s dolphin (1363 µg.g-1 dw). However, beside trophic position, numerous factors might be involved in Hg accumulation in marine mammals such as the age, body condition and specific metabolism. [less ▲]

Detailed reference viewed: 8 (3 ULg)