Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailINVESTIGATION OF TWO IMPROVED TRADITIONAL MEDICINES: DEVELOPMENT AND VALIDATION OF A LC-UV METHOD FOR THE DOSAGE OF A TRACER COMPOUND
Tshisekedi Tshibangu, Pascal; Kalenda Dibungi, Pascal; Rozet, Eric ULg et al

Poster (2014, June)

Detailed reference viewed: 42 (16 ULg)
Full Text
Peer Reviewed
See detailAn investigation of verbal short-term memory and phonological processing in four children with Williams syndrome
Majerus, Steve ULg; Barisnikov, K.; Vuillemin, I. et al

in Neurocase : Case Studies in Neuropsychology, Neuropsychiatry & Behavioural Neurology (2003), 9(5), 390-401

Although phonological processing is generally considered to be a proficiency in Williams syndrome (WS), there are very few studies which have extensively explored phonological processing abilities in WS ... [more ▼]

Although phonological processing is generally considered to be a proficiency in Williams syndrome (WS), there are very few studies which have extensively explored phonological processing abilities in WS. In this study, we re-assessed phonological processing in WS by exploring verbal STM and phonological awareness abilities in 4 children with WS (CA: 10-12 years) and two control groups, one matched for chronological age (CA) and the other matched for verbal mental age (VA). Our results confirm and extend previous claims of preserved phonological STM in WS by showing specifically preserved STM performance for non-words, compared to both VA and CA control groups. However, we observed that this was the case only for non-words where support of phonological and lexico-semantic knowledge was minimized, with reduced phonological and lexico-semantic effects on STM performance. Furthermore, a more direct assessment of phonological processing abilities through phonological awareness tasks showed impaired performance for the 4 WS children. Our data confirm that STM for non-words represents a real strength in. WS but they do not support previous assumptions of a more general preservation of phonological processing abilities in WS. Implications for impaired and preserved cognitive processes underlying verbal STM and phonological awareness abilities in WS are discussed. [less ▲]

Detailed reference viewed: 72 (5 ULg)
Full Text
Peer Reviewed
See detailInvestigation of volatile mixture emit by human tissues degradation
Stefanuto, Pierre-Hugues ULg; Dubois, Lena; Lloyd, Rebecca et al

Conference (2015, September)

Human rescue dog unit are the more efficient tool to locate cadaver or people trap after a natural disaster. However, the dog training process is long and expensive. Dog trainers are always looking for a ... [more ▼]

Human rescue dog unit are the more efficient tool to locate cadaver or people trap after a natural disaster. However, the dog training process is long and expensive. Dog trainers are always looking for a better understanding of the dog olfaction matching to improve their training methods (1). During these training sessions, dogs are usually trained to locate body pieces due to the difficulty to obtain a full cadaver. Moreover, some training aid solution are available but their compositions and their efficiencies are not worldwide recognized (2). To answer these questions, this project is monitoring the headspace human organs during the decomposition process. Five different organs are used: heart, lung, liver, kidney and blood. Every organs are sampled in triplicates and let to decompose in glass jar. Regularly, the headspace of the jar is sample by dynamic pumping to sorbent tubes that will further be injected on comprehensive two-dimensional gas chromatography system (GC×GC). GC×GC is a powerful analytical tool that allows the complete resolution of “the smell of death”, i.e. the decomposition odor (3-4). The compounds identified in the organs headspace can be compared with the one coming from decomposition studies on full bodies to establish a biomarkers list that will further be used for dog training solution elaboration. References 1. Hoffman et al. FSI (2009) 186, 6-13. 2. Stadler et al. J. Chrom. A. 1255, 202-206. 3. Stefanuto et al. CPC (2014) 79, 786-789. 4. Perrault et al. J. Sep. Sci. (2015) 38, 73-80. [less ▲]

Detailed reference viewed: 88 (16 ULg)
Full Text
Peer Reviewed
See detailInvestigation olfactive de la mort
Focant, Jean-François ULg; Stefanuto, Pierre-Hugues ULg; Brasseur, Catherine ULg et al

in Acta Clinica Belgica (2013, October), 68-6

Detailed reference viewed: 51 (8 ULg)
Full Text
See detailInvestigation on a hydrogen maser cavity in the TE111 mode : first results
Van Der Beken, Emeline ULg; Léonard, Daniel; Counet, Arnaud et al

Poster (2015, May 13)

Results of our preliminary investigation on a hydrogen maser cavity in the unusual TE111 mode are presented. Hydrogen masers use the transition at 1420.405MHz between the two hyperfine levels F = 0 and F ... [more ▼]

Results of our preliminary investigation on a hydrogen maser cavity in the unusual TE111 mode are presented. Hydrogen masers use the transition at 1420.405MHz between the two hyperfine levels F = 0 and F = 1 of the 1s1/2 ground state of the hydrogen atom. In contrast to standard hydrogen maser that exploits the TE011 mode, the TE111 mode allows one to design hydrogen masers with significant reduced dimensions, which represents a huge benefit for space applications and in particular for the global positioning system. In view of a future development of a hydrogen maser in the TE111 mode we performed a thorough analysis of the maser physics for this mode. Different simulations carried out are compared with first measurement results obtained for such a cavity. [less ▲]

Detailed reference viewed: 42 (4 ULg)
Full Text
See detailInvestigation on a scroll expander for waste heat recovery on internal combustion engines
Legros, Arnaud ULg; Guillaume, Ludovic ULg; Lemort, Vincent ULg et al

Scientific conference (2013, September 09)

In the present article, a model of scroll expander will be introduced. This model is able to evaluate the performance of a given machine with influence of the geometry. Several losses are also included by ... [more ▼]

In the present article, a model of scroll expander will be introduced. This model is able to evaluate the performance of a given machine with influence of the geometry. Several losses are also included by the model such as internal leakages, heat transfers or mechanical losses. The forces generated by the gas pressure on the involutes can also be calculated. That expander model is used in order to demonstrate its potential and provide some guidelines to the design of a new expander suitable for the application. [less ▲]

Detailed reference viewed: 211 (20 ULg)
Full Text
Peer Reviewed
See detailInvestigation on a ventilation heat recovery exchanger: Modeling and experimental validation in dry and partially wet conditions
Gendebien, Samuel ULg; Bertagnolio, Stéphane ULg; Lemort, Vincent ULg

in Energy & Buildings (2013), 62

The present paper focuses on the development and experimental validation of a model of air-to-air heat exchanger dedicated to domestic mechanical heat recovery ventilation. The proposed model describes ... [more ▼]

The present paper focuses on the development and experimental validation of a model of air-to-air heat exchanger dedicated to domestic mechanical heat recovery ventilation. The proposed model describes dry and partially wet regimes. The first part of the paper presents a semi-empirical model based on the physical characteristics of the heat recovery device and relying on empirical correlations available in the literature for the convective heat transfer coefficients. In the case of partially wet regime, a moving boundary model is applied in order to predict sensible and latent heat transfer rates. A model developed with friction factor coefficients estimated by correlations from the literature is also presented in order to predict the hydraulic performance in dry conditions. The second part of the paper describes the experimental investigation conducted on an off-the-shelf heat exchanger. Experimental data are used to tune correlations for the determination of the convective heat transfer coefficient and validate the proposed simulation model of the ventilation heat recovery exchanger in partially wet conditions. The model developed to determine the hydraulic performance with existing correlations for the friction factor coefficient does not require a calibration. Finally, examples of use of the developed model are presented, which includes coupling the model with a building simulation model, a study of the influence of the humidity on the evolution of the latent and sensible heat transfer rates and strategies to avoid freezing in the heat exchanger. [less ▲]

Detailed reference viewed: 128 (61 ULg)
Full Text
Peer Reviewed
See detailInvestigation on an air-to-air heat recovery exchanger: modeling and experimental validation in dry conditions
Gendebien, Samuel ULg; Bertagnolio, Stéphane ULg; Georges, Bernard ULg et al

in Proceedings of the RoomVent 2011 Conference (2011, June 21)

This paper deals with the development and the experimental validation of an air-to-air recovery heat exchanger model dedicated to ventilation of residential buildings. The first part of the paper presents ... [more ▼]

This paper deals with the development and the experimental validation of an air-to-air recovery heat exchanger model dedicated to ventilation of residential buildings. The first part of the paper presents a semi-empirical model based on physical characteristics of the heat exchanger. The aim of this model is to predict the behavior of the device in dry conditions. The second part of the paper describes the experimental facility designed to determine the hydraulic and thermal performance of the device and offers a comparison between simulation and experimental results. Finally, the model is calibrated in order to predict the thermal and hydraulic performance of the heat exchanger within respectively, less than 5% and less than 2% of accuracy. [less ▲]

Detailed reference viewed: 104 (27 ULg)
Full Text
Peer Reviewed
See detailAn investigation on climate responsive design strategies of vernacular housing in Vietnam
Nguyen, Anh Tuan ULg; Tran, Quoc Bao; Tran, Duc Quang et al

in Building & Environment (2011), 46

Energy conservation issues and environmental problems in recent years have increased interest in traditional architecture which is well known for its energy saving designs. This paper thoroughly ... [more ▼]

Energy conservation issues and environmental problems in recent years have increased interest in traditional architecture which is well known for its energy saving designs. This paper thoroughly investigates vernacular housing designs and evaluates on the aspect of building physics. A new research methodology which is adapted to the natural and social context of Vietnam was proposed and applied. The process was carried out step by step, including: climate zoning, systematic analysis, in-situ survey and building simulations. The results of this study indicate that vernacular housing in Vietnam is creatively adapted to the local natural conditions and uses various climate responsive strategies. Through this study, the most frequently used strategies and their effectiveness were derived. The authors also found that under extreme weather conditions, traditional designs might not be sufficient to maintain indoor thermal comfort. [less ▲]

Detailed reference viewed: 364 (29 ULg)
Full Text
Peer Reviewed
See detailInvestigation on Convective Drying of Mixtures of Sewage Sludge and Sawdust in a Fixed Bed
Li, Jie ULg; Fraikin, Laurent ULg; Salmon, Thierry ULg et al

in Drying Technology (2014)

This work is a part of a project aiming at developing a renewable fuel for gasification purposes, through convective drying of sludge/wood mixtures. The first step consists of characterizing the behavior ... [more ▼]

This work is a part of a project aiming at developing a renewable fuel for gasification purposes, through convective drying of sludge/wood mixtures. The first step consists of characterizing the behavior of sawdust/sludge mixtures during the application of convective drying. The influence of the mixing step (no mixing against 30 s at 40 rpm), as well as the sawdust/sludge ratio (1/9, 2/8, 3/7 and 4/6 on a dry basis) and the effect of the drying temperature (50 °C, 80 °C and 110 °C) have been investigated. In this study, X-ray tomography, a non-invasive imaging technique, is used to assess changes in the volume, void and exchange surface at the beginning and the end of the drying process. Results first confirm the importance of the mixing step on the drying behavior: the drying rate of the mixed sludge is lower than that of the original sludge. Nevertheless the addition of sawdust is shown to have a positive impact on the drying process from a mass ratio of 2/8, with drying rates higher than that of the original sludge. With increasing amount of sawdust, the initial and final bed volumes, initial and final total exchange surfaces, and initial void fraction increase linearly, but the bed volume shrinkage and final void fraction decrease linearly. [less ▲]

Detailed reference viewed: 53 (4 ULg)
Full Text
Peer Reviewed
See detailInvestigation on Convective Drying of Mixtures of Sewage Sludge and Sawdust in a Fixed Bed
Li, Jie ULg; Fraikin, Laurent ULg; Salmon, Thierry ULg et al

in Drying Technology (2015), 33(6), 704-712

Detailed reference viewed: 29 (1 ULg)
Full Text
See detailInvestigation on gas pressure measurement inside small caliber weapons with piezoelectric transducers
Elkarous, Lamine ULg; Pirlot, Marc; Golinval, Jean-Claude ULg et al

in Measurement Science Conference 2012 (2011, March 20)

Detailed reference viewed: 40 (7 ULg)
Full Text
See detailInvestigation on genotype by environment interaction for milk yield of Holstein cows in Luxembourg and Tunisia
Hammami, Hedi ULg; Croquet, Coraline; Soyeurt, Hélène ULg et al

in INTERBULL Bulletin (2006), 35

Detailed reference viewed: 38 (16 ULg)
Full Text
Peer Reviewed
See detailInvestigation on human cadaveric VOC by TD-GCxGC-TOFMS
Stefanuto, Pierre-Hugues ULg; Stadler, Sonja; Pesesse, Romain et al

Poster (2013, May)

The study of the ‘smell of death’ is a challenging task. Analytical chemists who try to understand human decomposition are facing very complex mixtures of analytes present at various levels. For the last ... [more ▼]

The study of the ‘smell of death’ is a challenging task. Analytical chemists who try to understand human decomposition are facing very complex mixtures of analytes present at various levels. For the last few decades, investigations have been conducted to better learn the process of body decomposition by mean of the measurement of the Volatile Organic Compounds (VOCs) released during decay1. However, the chemical profile of the decomposition odor is still far from being elucidated. Indeed, the complexity of the VOC mixtures makes this profiling difficult to be carried out by a classical gas chromatography mass spectrometry (GC-MS) approach. In previous studies, we developed direct-sampling based approaches for cadaveric VOC analysis from grave soils and decaying bodies by mean of thermal desorption (TD) coupled to comprehensive two-dimensional GC coupled to time-of-flight MS (GC×GC-TOFMS)2,3,4. They were based on the use of human analogs (Sus domesticus L. carcasses). For the present study, we investigated the VOC profile of early stage decomposition of human bodies. We analyzed samples collected during different trials organized during different seasons in a body farm located in Texas. Samples included environmental controls, pig carcasses, and human bodies (protected or not from scavenger insects). The data processing was performed in the light of identifying possible seasonal and species variations. Both peak capacity enhancement and spectral deconvolution helped to characterize VOC mixtures and improve comparisons of profiles. Acknowledgements: Human samples were collected during the project “Development and validation of standard operating procedures for measuring microbial populations for estimating a post-mortem interval” Grant Award No. 2010-DN-BX-K243. The authors of that grant are acknowledged for giving us the opportunity to access cadavers for sampling. 1. Vass, A.A. et al. Decompositional odor analysis database. J Forensic Sci (2004) 49, 1–10. 2. Brasseur C. et al. Comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry for the forensic study of cadaveric volatile organic compounds released in soil by buried decaying pig carcasses. J Chromatogr A (2012) 1255, 163–170. 3. Dekeirsschieter, J. et al. Enhanced characterization of the smell of death by comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry (GCxGC-TOFMS). PLoS ONE (2012) 7, e39005. 4. Stadler, S. Characterization of volatile organic compounds from human analogue decomposition using thermal desorption coupled to comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry. Anal Chem (2013) 85, 998–1005. [less ▲]

Detailed reference viewed: 594 (10 ULg)
Full Text
Peer Reviewed
See detailInvestigation on Laser-induced Breakdown Spectroscopy of Potassium Chloride Solution
Zhang, Wenyan; Lin, Zhaoxiang; Lu, Jidong et al

in Applied Laser (2007), 27(2), 121-123

The experimental setup for laser—induced breakdown spectroscopy test was designed with pulsed Nd:YAG laser,spectrograph and ICCD and so on.Furthermore the potassium chloride solution spectra signals were ... [more ▼]

The experimental setup for laser—induced breakdown spectroscopy test was designed with pulsed Nd:YAG laser,spectrograph and ICCD and so on.Furthermore the potassium chloride solution spectra signals were detected by this setup.The spectra lines of the trace elements such as natrium (20mg/1),magnesium(1 mg/1),calcium(3 mg/1)are recorded.Experiment results show that delay time is one of the important parameters when qualitative analysis.It is easy for LIBS technology to detect multi—elements simultaneity if delay time is appropriate,and qualitative analysis has demonstrated that the feasibility of detecting trace poisonous metals in waste water using LIBS、 [less ▲]

Detailed reference viewed: 32 (0 ULg)
Full Text
Peer Reviewed
See detailInvestigation on liquid maldistribution in packed beds by X-ray tomography
Marchot, Pierre ULg; Toye, Dominique ULg; Crine, Michel ULg et al

in Chemical Engineering Research & Design : Transactions of the Institution of Chemical Engineers Part A (1999), 77

Detailed reference viewed: 15 (3 ULg)
See detailInvestigation on placental lactogen in bovine foetus
Alvarez Oxiley, Andrea Vivian ULg

Doctoral thesis (2012)

Detailed reference viewed: 151 (7 ULg)
Full Text
Peer Reviewed
See detailInvestigation on possible transmission of monkeys' Plasmodium to human in a populations living in the equatorial rainforest of the Democratic republic of Congo
MVUMBI, Dieudonné; BOBANGA, Thierry; UMESUMBU, Solange et al

in International Journal for Parasitology: parasites and wild life (2016), 5

Plasmodiums are protozoa that may infect various hosts. Only five species are now recognized as naturally parasitizing humans: Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae, Plasmodium ... [more ▼]

Plasmodiums are protozoa that may infect various hosts. Only five species are now recognized as naturally parasitizing humans: Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae, Plasmodium ovale and Plasmodium knowlesi. This fifth species, P. knowlesi, previously identified as naturally parasitizing the monkey Macaca fascicularis, has been microscopically confused for a long time with P. malariae or P. falciparum and it was not possible to correctly differentiate them until the advent of molecular biology. To date, natural human infections with P. knowlesi only occur in Southeast Asia and a similar phenomenon of natural transmission of simian plasmodium to humans has not been reported elsewhere. This study was conducted to investigate a possible transmission of African small monkey's plasmodium to humans in populations living near the rainforest of the Democratic Republic of Congo (DRC) where several species of non-human primates are living. Two successive real-time PCRs were identified in the literature and used in combination for purpose. Only P. falciparum was found in this study. However, studies with larger samples and with more advanced techniques should be conducted. [less ▲]

Detailed reference viewed: 38 (8 ULg)